xref: /openbmc/linux/drivers/scsi/lpfc/lpfc_init.c (revision f5ad1c74)
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2017-2020 Broadcom. All Rights Reserved. The term *
5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
7  * EMULEX and SLI are trademarks of Emulex.                        *
8  * www.broadcom.com                                                *
9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
10  *                                                                 *
11  * This program is free software; you can redistribute it and/or   *
12  * modify it under the terms of version 2 of the GNU General       *
13  * Public License as published by the Free Software Foundation.    *
14  * This program is distributed in the hope that it will be useful. *
15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
20  * more details, a copy of which can be found in the file COPYING  *
21  * included with this package.                                     *
22  *******************************************************************/
23 
24 #include <linux/blkdev.h>
25 #include <linux/delay.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/idr.h>
28 #include <linux/interrupt.h>
29 #include <linux/module.h>
30 #include <linux/kthread.h>
31 #include <linux/pci.h>
32 #include <linux/spinlock.h>
33 #include <linux/ctype.h>
34 #include <linux/aer.h>
35 #include <linux/slab.h>
36 #include <linux/firmware.h>
37 #include <linux/miscdevice.h>
38 #include <linux/percpu.h>
39 #include <linux/msi.h>
40 #include <linux/irq.h>
41 #include <linux/bitops.h>
42 #include <linux/crash_dump.h>
43 #include <linux/cpu.h>
44 #include <linux/cpuhotplug.h>
45 
46 #include <scsi/scsi.h>
47 #include <scsi/scsi_device.h>
48 #include <scsi/scsi_host.h>
49 #include <scsi/scsi_transport_fc.h>
50 #include <scsi/scsi_tcq.h>
51 #include <scsi/fc/fc_fs.h>
52 
53 #include "lpfc_hw4.h"
54 #include "lpfc_hw.h"
55 #include "lpfc_sli.h"
56 #include "lpfc_sli4.h"
57 #include "lpfc_nl.h"
58 #include "lpfc_disc.h"
59 #include "lpfc.h"
60 #include "lpfc_scsi.h"
61 #include "lpfc_nvme.h"
62 #include "lpfc_logmsg.h"
63 #include "lpfc_crtn.h"
64 #include "lpfc_vport.h"
65 #include "lpfc_version.h"
66 #include "lpfc_ids.h"
67 
68 static enum cpuhp_state lpfc_cpuhp_state;
69 /* Used when mapping IRQ vectors in a driver centric manner */
70 static uint32_t lpfc_present_cpu;
71 
72 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba);
73 static void lpfc_cpuhp_remove(struct lpfc_hba *phba);
74 static void lpfc_cpuhp_add(struct lpfc_hba *phba);
75 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
76 static int lpfc_post_rcv_buf(struct lpfc_hba *);
77 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
78 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
79 static int lpfc_setup_endian_order(struct lpfc_hba *);
80 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
81 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
82 static void lpfc_free_nvmet_sgl_list(struct lpfc_hba *);
83 static void lpfc_init_sgl_list(struct lpfc_hba *);
84 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
85 static void lpfc_free_active_sgl(struct lpfc_hba *);
86 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
87 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
88 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
89 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
90 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
91 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
92 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
93 static void lpfc_sli4_oas_verify(struct lpfc_hba *phba);
94 static uint16_t lpfc_find_cpu_handle(struct lpfc_hba *, uint16_t, int);
95 static void lpfc_setup_bg(struct lpfc_hba *, struct Scsi_Host *);
96 
97 static struct scsi_transport_template *lpfc_transport_template = NULL;
98 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
99 static DEFINE_IDR(lpfc_hba_index);
100 #define LPFC_NVMET_BUF_POST 254
101 
102 /**
103  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
104  * @phba: pointer to lpfc hba data structure.
105  *
106  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
107  * mailbox command. It retrieves the revision information from the HBA and
108  * collects the Vital Product Data (VPD) about the HBA for preparing the
109  * configuration of the HBA.
110  *
111  * Return codes:
112  *   0 - success.
113  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
114  *   Any other value - indicates an error.
115  **/
116 int
117 lpfc_config_port_prep(struct lpfc_hba *phba)
118 {
119 	lpfc_vpd_t *vp = &phba->vpd;
120 	int i = 0, rc;
121 	LPFC_MBOXQ_t *pmb;
122 	MAILBOX_t *mb;
123 	char *lpfc_vpd_data = NULL;
124 	uint16_t offset = 0;
125 	static char licensed[56] =
126 		    "key unlock for use with gnu public licensed code only\0";
127 	static int init_key = 1;
128 
129 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
130 	if (!pmb) {
131 		phba->link_state = LPFC_HBA_ERROR;
132 		return -ENOMEM;
133 	}
134 
135 	mb = &pmb->u.mb;
136 	phba->link_state = LPFC_INIT_MBX_CMDS;
137 
138 	if (lpfc_is_LC_HBA(phba->pcidev->device)) {
139 		if (init_key) {
140 			uint32_t *ptext = (uint32_t *) licensed;
141 
142 			for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
143 				*ptext = cpu_to_be32(*ptext);
144 			init_key = 0;
145 		}
146 
147 		lpfc_read_nv(phba, pmb);
148 		memset((char*)mb->un.varRDnvp.rsvd3, 0,
149 			sizeof (mb->un.varRDnvp.rsvd3));
150 		memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
151 			 sizeof (licensed));
152 
153 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
154 
155 		if (rc != MBX_SUCCESS) {
156 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
157 					"0324 Config Port initialization "
158 					"error, mbxCmd x%x READ_NVPARM, "
159 					"mbxStatus x%x\n",
160 					mb->mbxCommand, mb->mbxStatus);
161 			mempool_free(pmb, phba->mbox_mem_pool);
162 			return -ERESTART;
163 		}
164 		memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
165 		       sizeof(phba->wwnn));
166 		memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
167 		       sizeof(phba->wwpn));
168 	}
169 
170 	/*
171 	 * Clear all option bits except LPFC_SLI3_BG_ENABLED,
172 	 * which was already set in lpfc_get_cfgparam()
173 	 */
174 	phba->sli3_options &= (uint32_t)LPFC_SLI3_BG_ENABLED;
175 
176 	/* Setup and issue mailbox READ REV command */
177 	lpfc_read_rev(phba, pmb);
178 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
179 	if (rc != MBX_SUCCESS) {
180 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
181 				"0439 Adapter failed to init, mbxCmd x%x "
182 				"READ_REV, mbxStatus x%x\n",
183 				mb->mbxCommand, mb->mbxStatus);
184 		mempool_free( pmb, phba->mbox_mem_pool);
185 		return -ERESTART;
186 	}
187 
188 
189 	/*
190 	 * The value of rr must be 1 since the driver set the cv field to 1.
191 	 * This setting requires the FW to set all revision fields.
192 	 */
193 	if (mb->un.varRdRev.rr == 0) {
194 		vp->rev.rBit = 0;
195 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
196 				"0440 Adapter failed to init, READ_REV has "
197 				"missing revision information.\n");
198 		mempool_free(pmb, phba->mbox_mem_pool);
199 		return -ERESTART;
200 	}
201 
202 	if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
203 		mempool_free(pmb, phba->mbox_mem_pool);
204 		return -EINVAL;
205 	}
206 
207 	/* Save information as VPD data */
208 	vp->rev.rBit = 1;
209 	memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
210 	vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
211 	memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
212 	vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
213 	memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
214 	vp->rev.biuRev = mb->un.varRdRev.biuRev;
215 	vp->rev.smRev = mb->un.varRdRev.smRev;
216 	vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
217 	vp->rev.endecRev = mb->un.varRdRev.endecRev;
218 	vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
219 	vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
220 	vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
221 	vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
222 	vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
223 	vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
224 
225 	/* If the sli feature level is less then 9, we must
226 	 * tear down all RPIs and VPIs on link down if NPIV
227 	 * is enabled.
228 	 */
229 	if (vp->rev.feaLevelHigh < 9)
230 		phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
231 
232 	if (lpfc_is_LC_HBA(phba->pcidev->device))
233 		memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
234 						sizeof (phba->RandomData));
235 
236 	/* Get adapter VPD information */
237 	lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
238 	if (!lpfc_vpd_data)
239 		goto out_free_mbox;
240 	do {
241 		lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
242 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
243 
244 		if (rc != MBX_SUCCESS) {
245 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
246 					"0441 VPD not present on adapter, "
247 					"mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
248 					mb->mbxCommand, mb->mbxStatus);
249 			mb->un.varDmp.word_cnt = 0;
250 		}
251 		/* dump mem may return a zero when finished or we got a
252 		 * mailbox error, either way we are done.
253 		 */
254 		if (mb->un.varDmp.word_cnt == 0)
255 			break;
256 
257 		i =  mb->un.varDmp.word_cnt * sizeof(uint32_t);
258 		if (offset + i >  DMP_VPD_SIZE)
259 			i =  DMP_VPD_SIZE - offset;
260 		lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
261 				      lpfc_vpd_data  + offset, i);
262 		offset += i;
263 	} while (offset < DMP_VPD_SIZE);
264 
265 	lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
266 
267 	kfree(lpfc_vpd_data);
268 out_free_mbox:
269 	mempool_free(pmb, phba->mbox_mem_pool);
270 	return 0;
271 }
272 
273 /**
274  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
275  * @phba: pointer to lpfc hba data structure.
276  * @pmboxq: pointer to the driver internal queue element for mailbox command.
277  *
278  * This is the completion handler for driver's configuring asynchronous event
279  * mailbox command to the device. If the mailbox command returns successfully,
280  * it will set internal async event support flag to 1; otherwise, it will
281  * set internal async event support flag to 0.
282  **/
283 static void
284 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
285 {
286 	if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
287 		phba->temp_sensor_support = 1;
288 	else
289 		phba->temp_sensor_support = 0;
290 	mempool_free(pmboxq, phba->mbox_mem_pool);
291 	return;
292 }
293 
294 /**
295  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
296  * @phba: pointer to lpfc hba data structure.
297  * @pmboxq: pointer to the driver internal queue element for mailbox command.
298  *
299  * This is the completion handler for dump mailbox command for getting
300  * wake up parameters. When this command complete, the response contain
301  * Option rom version of the HBA. This function translate the version number
302  * into a human readable string and store it in OptionROMVersion.
303  **/
304 static void
305 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
306 {
307 	struct prog_id *prg;
308 	uint32_t prog_id_word;
309 	char dist = ' ';
310 	/* character array used for decoding dist type. */
311 	char dist_char[] = "nabx";
312 
313 	if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
314 		mempool_free(pmboxq, phba->mbox_mem_pool);
315 		return;
316 	}
317 
318 	prg = (struct prog_id *) &prog_id_word;
319 
320 	/* word 7 contain option rom version */
321 	prog_id_word = pmboxq->u.mb.un.varWords[7];
322 
323 	/* Decode the Option rom version word to a readable string */
324 	if (prg->dist < 4)
325 		dist = dist_char[prg->dist];
326 
327 	if ((prg->dist == 3) && (prg->num == 0))
328 		snprintf(phba->OptionROMVersion, 32, "%d.%d%d",
329 			prg->ver, prg->rev, prg->lev);
330 	else
331 		snprintf(phba->OptionROMVersion, 32, "%d.%d%d%c%d",
332 			prg->ver, prg->rev, prg->lev,
333 			dist, prg->num);
334 	mempool_free(pmboxq, phba->mbox_mem_pool);
335 	return;
336 }
337 
338 /**
339  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
340  *	cfg_soft_wwnn, cfg_soft_wwpn
341  * @vport: pointer to lpfc vport data structure.
342  *
343  *
344  * Return codes
345  *   None.
346  **/
347 void
348 lpfc_update_vport_wwn(struct lpfc_vport *vport)
349 {
350 	uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
351 	u32 *fawwpn_key = (u32 *)&vport->fc_sparam.un.vendorVersion[0];
352 
353 	/* If the soft name exists then update it using the service params */
354 	if (vport->phba->cfg_soft_wwnn)
355 		u64_to_wwn(vport->phba->cfg_soft_wwnn,
356 			   vport->fc_sparam.nodeName.u.wwn);
357 	if (vport->phba->cfg_soft_wwpn)
358 		u64_to_wwn(vport->phba->cfg_soft_wwpn,
359 			   vport->fc_sparam.portName.u.wwn);
360 
361 	/*
362 	 * If the name is empty or there exists a soft name
363 	 * then copy the service params name, otherwise use the fc name
364 	 */
365 	if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
366 		memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
367 			sizeof(struct lpfc_name));
368 	else
369 		memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
370 			sizeof(struct lpfc_name));
371 
372 	/*
373 	 * If the port name has changed, then set the Param changes flag
374 	 * to unreg the login
375 	 */
376 	if (vport->fc_portname.u.wwn[0] != 0 &&
377 		memcmp(&vport->fc_portname, &vport->fc_sparam.portName,
378 			sizeof(struct lpfc_name)))
379 		vport->vport_flag |= FAWWPN_PARAM_CHG;
380 
381 	if (vport->fc_portname.u.wwn[0] == 0 ||
382 	    vport->phba->cfg_soft_wwpn ||
383 	    (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) ||
384 	    vport->vport_flag & FAWWPN_SET) {
385 		memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
386 			sizeof(struct lpfc_name));
387 		vport->vport_flag &= ~FAWWPN_SET;
388 		if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR)
389 			vport->vport_flag |= FAWWPN_SET;
390 	}
391 	else
392 		memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
393 			sizeof(struct lpfc_name));
394 }
395 
396 /**
397  * lpfc_config_port_post - Perform lpfc initialization after config port
398  * @phba: pointer to lpfc hba data structure.
399  *
400  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
401  * command call. It performs all internal resource and state setups on the
402  * port: post IOCB buffers, enable appropriate host interrupt attentions,
403  * ELS ring timers, etc.
404  *
405  * Return codes
406  *   0 - success.
407  *   Any other value - error.
408  **/
409 int
410 lpfc_config_port_post(struct lpfc_hba *phba)
411 {
412 	struct lpfc_vport *vport = phba->pport;
413 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
414 	LPFC_MBOXQ_t *pmb;
415 	MAILBOX_t *mb;
416 	struct lpfc_dmabuf *mp;
417 	struct lpfc_sli *psli = &phba->sli;
418 	uint32_t status, timeout;
419 	int i, j;
420 	int rc;
421 
422 	spin_lock_irq(&phba->hbalock);
423 	/*
424 	 * If the Config port completed correctly the HBA is not
425 	 * over heated any more.
426 	 */
427 	if (phba->over_temp_state == HBA_OVER_TEMP)
428 		phba->over_temp_state = HBA_NORMAL_TEMP;
429 	spin_unlock_irq(&phba->hbalock);
430 
431 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
432 	if (!pmb) {
433 		phba->link_state = LPFC_HBA_ERROR;
434 		return -ENOMEM;
435 	}
436 	mb = &pmb->u.mb;
437 
438 	/* Get login parameters for NID.  */
439 	rc = lpfc_read_sparam(phba, pmb, 0);
440 	if (rc) {
441 		mempool_free(pmb, phba->mbox_mem_pool);
442 		return -ENOMEM;
443 	}
444 
445 	pmb->vport = vport;
446 	if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
447 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
448 				"0448 Adapter failed init, mbxCmd x%x "
449 				"READ_SPARM mbxStatus x%x\n",
450 				mb->mbxCommand, mb->mbxStatus);
451 		phba->link_state = LPFC_HBA_ERROR;
452 		mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
453 		mempool_free(pmb, phba->mbox_mem_pool);
454 		lpfc_mbuf_free(phba, mp->virt, mp->phys);
455 		kfree(mp);
456 		return -EIO;
457 	}
458 
459 	mp = (struct lpfc_dmabuf *)pmb->ctx_buf;
460 
461 	memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
462 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
463 	kfree(mp);
464 	pmb->ctx_buf = NULL;
465 	lpfc_update_vport_wwn(vport);
466 
467 	/* Update the fc_host data structures with new wwn. */
468 	fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
469 	fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
470 	fc_host_max_npiv_vports(shost) = phba->max_vpi;
471 
472 	/* If no serial number in VPD data, use low 6 bytes of WWNN */
473 	/* This should be consolidated into parse_vpd ? - mr */
474 	if (phba->SerialNumber[0] == 0) {
475 		uint8_t *outptr;
476 
477 		outptr = &vport->fc_nodename.u.s.IEEE[0];
478 		for (i = 0; i < 12; i++) {
479 			status = *outptr++;
480 			j = ((status & 0xf0) >> 4);
481 			if (j <= 9)
482 				phba->SerialNumber[i] =
483 				    (char)((uint8_t) 0x30 + (uint8_t) j);
484 			else
485 				phba->SerialNumber[i] =
486 				    (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
487 			i++;
488 			j = (status & 0xf);
489 			if (j <= 9)
490 				phba->SerialNumber[i] =
491 				    (char)((uint8_t) 0x30 + (uint8_t) j);
492 			else
493 				phba->SerialNumber[i] =
494 				    (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
495 		}
496 	}
497 
498 	lpfc_read_config(phba, pmb);
499 	pmb->vport = vport;
500 	if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
501 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
502 				"0453 Adapter failed to init, mbxCmd x%x "
503 				"READ_CONFIG, mbxStatus x%x\n",
504 				mb->mbxCommand, mb->mbxStatus);
505 		phba->link_state = LPFC_HBA_ERROR;
506 		mempool_free( pmb, phba->mbox_mem_pool);
507 		return -EIO;
508 	}
509 
510 	/* Check if the port is disabled */
511 	lpfc_sli_read_link_ste(phba);
512 
513 	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */
514 	if (phba->cfg_hba_queue_depth > mb->un.varRdConfig.max_xri) {
515 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
516 				"3359 HBA queue depth changed from %d to %d\n",
517 				phba->cfg_hba_queue_depth,
518 				mb->un.varRdConfig.max_xri);
519 		phba->cfg_hba_queue_depth = mb->un.varRdConfig.max_xri;
520 	}
521 
522 	phba->lmt = mb->un.varRdConfig.lmt;
523 
524 	/* Get the default values for Model Name and Description */
525 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
526 
527 	phba->link_state = LPFC_LINK_DOWN;
528 
529 	/* Only process IOCBs on ELS ring till hba_state is READY */
530 	if (psli->sli3_ring[LPFC_EXTRA_RING].sli.sli3.cmdringaddr)
531 		psli->sli3_ring[LPFC_EXTRA_RING].flag |= LPFC_STOP_IOCB_EVENT;
532 	if (psli->sli3_ring[LPFC_FCP_RING].sli.sli3.cmdringaddr)
533 		psli->sli3_ring[LPFC_FCP_RING].flag |= LPFC_STOP_IOCB_EVENT;
534 
535 	/* Post receive buffers for desired rings */
536 	if (phba->sli_rev != 3)
537 		lpfc_post_rcv_buf(phba);
538 
539 	/*
540 	 * Configure HBA MSI-X attention conditions to messages if MSI-X mode
541 	 */
542 	if (phba->intr_type == MSIX) {
543 		rc = lpfc_config_msi(phba, pmb);
544 		if (rc) {
545 			mempool_free(pmb, phba->mbox_mem_pool);
546 			return -EIO;
547 		}
548 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
549 		if (rc != MBX_SUCCESS) {
550 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
551 					"0352 Config MSI mailbox command "
552 					"failed, mbxCmd x%x, mbxStatus x%x\n",
553 					pmb->u.mb.mbxCommand,
554 					pmb->u.mb.mbxStatus);
555 			mempool_free(pmb, phba->mbox_mem_pool);
556 			return -EIO;
557 		}
558 	}
559 
560 	spin_lock_irq(&phba->hbalock);
561 	/* Initialize ERATT handling flag */
562 	phba->hba_flag &= ~HBA_ERATT_HANDLED;
563 
564 	/* Enable appropriate host interrupts */
565 	if (lpfc_readl(phba->HCregaddr, &status)) {
566 		spin_unlock_irq(&phba->hbalock);
567 		return -EIO;
568 	}
569 	status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
570 	if (psli->num_rings > 0)
571 		status |= HC_R0INT_ENA;
572 	if (psli->num_rings > 1)
573 		status |= HC_R1INT_ENA;
574 	if (psli->num_rings > 2)
575 		status |= HC_R2INT_ENA;
576 	if (psli->num_rings > 3)
577 		status |= HC_R3INT_ENA;
578 
579 	if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
580 	    (phba->cfg_poll & DISABLE_FCP_RING_INT))
581 		status &= ~(HC_R0INT_ENA);
582 
583 	writel(status, phba->HCregaddr);
584 	readl(phba->HCregaddr); /* flush */
585 	spin_unlock_irq(&phba->hbalock);
586 
587 	/* Set up ring-0 (ELS) timer */
588 	timeout = phba->fc_ratov * 2;
589 	mod_timer(&vport->els_tmofunc,
590 		  jiffies + msecs_to_jiffies(1000 * timeout));
591 	/* Set up heart beat (HB) timer */
592 	mod_timer(&phba->hb_tmofunc,
593 		  jiffies + msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
594 	phba->hb_outstanding = 0;
595 	phba->last_completion_time = jiffies;
596 	/* Set up error attention (ERATT) polling timer */
597 	mod_timer(&phba->eratt_poll,
598 		  jiffies + msecs_to_jiffies(1000 * phba->eratt_poll_interval));
599 
600 	if (phba->hba_flag & LINK_DISABLED) {
601 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
602 				"2598 Adapter Link is disabled.\n");
603 		lpfc_down_link(phba, pmb);
604 		pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
605 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
606 		if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
607 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
608 					"2599 Adapter failed to issue DOWN_LINK"
609 					" mbox command rc 0x%x\n", rc);
610 
611 			mempool_free(pmb, phba->mbox_mem_pool);
612 			return -EIO;
613 		}
614 	} else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
615 		mempool_free(pmb, phba->mbox_mem_pool);
616 		rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
617 		if (rc)
618 			return rc;
619 	}
620 	/* MBOX buffer will be freed in mbox compl */
621 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
622 	if (!pmb) {
623 		phba->link_state = LPFC_HBA_ERROR;
624 		return -ENOMEM;
625 	}
626 
627 	lpfc_config_async(phba, pmb, LPFC_ELS_RING);
628 	pmb->mbox_cmpl = lpfc_config_async_cmpl;
629 	pmb->vport = phba->pport;
630 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
631 
632 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
633 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
634 				"0456 Adapter failed to issue "
635 				"ASYNCEVT_ENABLE mbox status x%x\n",
636 				rc);
637 		mempool_free(pmb, phba->mbox_mem_pool);
638 	}
639 
640 	/* Get Option rom version */
641 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
642 	if (!pmb) {
643 		phba->link_state = LPFC_HBA_ERROR;
644 		return -ENOMEM;
645 	}
646 
647 	lpfc_dump_wakeup_param(phba, pmb);
648 	pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
649 	pmb->vport = phba->pport;
650 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
651 
652 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
653 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
654 				"0435 Adapter failed "
655 				"to get Option ROM version status x%x\n", rc);
656 		mempool_free(pmb, phba->mbox_mem_pool);
657 	}
658 
659 	return 0;
660 }
661 
662 /**
663  * lpfc_hba_init_link - Initialize the FC link
664  * @phba: pointer to lpfc hba data structure.
665  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
666  *
667  * This routine will issue the INIT_LINK mailbox command call.
668  * It is available to other drivers through the lpfc_hba data
669  * structure for use as a delayed link up mechanism with the
670  * module parameter lpfc_suppress_link_up.
671  *
672  * Return code
673  *		0 - success
674  *		Any other value - error
675  **/
676 static int
677 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
678 {
679 	return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
680 }
681 
682 /**
683  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
684  * @phba: pointer to lpfc hba data structure.
685  * @fc_topology: desired fc topology.
686  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
687  *
688  * This routine will issue the INIT_LINK mailbox command call.
689  * It is available to other drivers through the lpfc_hba data
690  * structure for use as a delayed link up mechanism with the
691  * module parameter lpfc_suppress_link_up.
692  *
693  * Return code
694  *              0 - success
695  *              Any other value - error
696  **/
697 int
698 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
699 			       uint32_t flag)
700 {
701 	struct lpfc_vport *vport = phba->pport;
702 	LPFC_MBOXQ_t *pmb;
703 	MAILBOX_t *mb;
704 	int rc;
705 
706 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
707 	if (!pmb) {
708 		phba->link_state = LPFC_HBA_ERROR;
709 		return -ENOMEM;
710 	}
711 	mb = &pmb->u.mb;
712 	pmb->vport = vport;
713 
714 	if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
715 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
716 	     !(phba->lmt & LMT_1Gb)) ||
717 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
718 	     !(phba->lmt & LMT_2Gb)) ||
719 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
720 	     !(phba->lmt & LMT_4Gb)) ||
721 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
722 	     !(phba->lmt & LMT_8Gb)) ||
723 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
724 	     !(phba->lmt & LMT_10Gb)) ||
725 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
726 	     !(phba->lmt & LMT_16Gb)) ||
727 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_32G) &&
728 	     !(phba->lmt & LMT_32Gb)) ||
729 	    ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_64G) &&
730 	     !(phba->lmt & LMT_64Gb))) {
731 		/* Reset link speed to auto */
732 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
733 				"1302 Invalid speed for this board:%d "
734 				"Reset link speed to auto.\n",
735 				phba->cfg_link_speed);
736 			phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
737 	}
738 	lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
739 	pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
740 	if (phba->sli_rev < LPFC_SLI_REV4)
741 		lpfc_set_loopback_flag(phba);
742 	rc = lpfc_sli_issue_mbox(phba, pmb, flag);
743 	if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
744 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
745 				"0498 Adapter failed to init, mbxCmd x%x "
746 				"INIT_LINK, mbxStatus x%x\n",
747 				mb->mbxCommand, mb->mbxStatus);
748 		if (phba->sli_rev <= LPFC_SLI_REV3) {
749 			/* Clear all interrupt enable conditions */
750 			writel(0, phba->HCregaddr);
751 			readl(phba->HCregaddr); /* flush */
752 			/* Clear all pending interrupts */
753 			writel(0xffffffff, phba->HAregaddr);
754 			readl(phba->HAregaddr); /* flush */
755 		}
756 		phba->link_state = LPFC_HBA_ERROR;
757 		if (rc != MBX_BUSY || flag == MBX_POLL)
758 			mempool_free(pmb, phba->mbox_mem_pool);
759 		return -EIO;
760 	}
761 	phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
762 	if (flag == MBX_POLL)
763 		mempool_free(pmb, phba->mbox_mem_pool);
764 
765 	return 0;
766 }
767 
768 /**
769  * lpfc_hba_down_link - this routine downs the FC link
770  * @phba: pointer to lpfc hba data structure.
771  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
772  *
773  * This routine will issue the DOWN_LINK mailbox command call.
774  * It is available to other drivers through the lpfc_hba data
775  * structure for use to stop the link.
776  *
777  * Return code
778  *		0 - success
779  *		Any other value - error
780  **/
781 static int
782 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
783 {
784 	LPFC_MBOXQ_t *pmb;
785 	int rc;
786 
787 	pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
788 	if (!pmb) {
789 		phba->link_state = LPFC_HBA_ERROR;
790 		return -ENOMEM;
791 	}
792 
793 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
794 			"0491 Adapter Link is disabled.\n");
795 	lpfc_down_link(phba, pmb);
796 	pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
797 	rc = lpfc_sli_issue_mbox(phba, pmb, flag);
798 	if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
799 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
800 				"2522 Adapter failed to issue DOWN_LINK"
801 				" mbox command rc 0x%x\n", rc);
802 
803 		mempool_free(pmb, phba->mbox_mem_pool);
804 		return -EIO;
805 	}
806 	if (flag == MBX_POLL)
807 		mempool_free(pmb, phba->mbox_mem_pool);
808 
809 	return 0;
810 }
811 
812 /**
813  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
814  * @phba: pointer to lpfc HBA data structure.
815  *
816  * This routine will do LPFC uninitialization before the HBA is reset when
817  * bringing down the SLI Layer.
818  *
819  * Return codes
820  *   0 - success.
821  *   Any other value - error.
822  **/
823 int
824 lpfc_hba_down_prep(struct lpfc_hba *phba)
825 {
826 	struct lpfc_vport **vports;
827 	int i;
828 
829 	if (phba->sli_rev <= LPFC_SLI_REV3) {
830 		/* Disable interrupts */
831 		writel(0, phba->HCregaddr);
832 		readl(phba->HCregaddr); /* flush */
833 	}
834 
835 	if (phba->pport->load_flag & FC_UNLOADING)
836 		lpfc_cleanup_discovery_resources(phba->pport);
837 	else {
838 		vports = lpfc_create_vport_work_array(phba);
839 		if (vports != NULL)
840 			for (i = 0; i <= phba->max_vports &&
841 				vports[i] != NULL; i++)
842 				lpfc_cleanup_discovery_resources(vports[i]);
843 		lpfc_destroy_vport_work_array(phba, vports);
844 	}
845 	return 0;
846 }
847 
848 /**
849  * lpfc_sli4_free_sp_events - Cleanup sp_queue_events to free
850  * rspiocb which got deferred
851  *
852  * @phba: pointer to lpfc HBA data structure.
853  *
854  * This routine will cleanup completed slow path events after HBA is reset
855  * when bringing down the SLI Layer.
856  *
857  *
858  * Return codes
859  *   void.
860  **/
861 static void
862 lpfc_sli4_free_sp_events(struct lpfc_hba *phba)
863 {
864 	struct lpfc_iocbq *rspiocbq;
865 	struct hbq_dmabuf *dmabuf;
866 	struct lpfc_cq_event *cq_event;
867 
868 	spin_lock_irq(&phba->hbalock);
869 	phba->hba_flag &= ~HBA_SP_QUEUE_EVT;
870 	spin_unlock_irq(&phba->hbalock);
871 
872 	while (!list_empty(&phba->sli4_hba.sp_queue_event)) {
873 		/* Get the response iocb from the head of work queue */
874 		spin_lock_irq(&phba->hbalock);
875 		list_remove_head(&phba->sli4_hba.sp_queue_event,
876 				 cq_event, struct lpfc_cq_event, list);
877 		spin_unlock_irq(&phba->hbalock);
878 
879 		switch (bf_get(lpfc_wcqe_c_code, &cq_event->cqe.wcqe_cmpl)) {
880 		case CQE_CODE_COMPL_WQE:
881 			rspiocbq = container_of(cq_event, struct lpfc_iocbq,
882 						 cq_event);
883 			lpfc_sli_release_iocbq(phba, rspiocbq);
884 			break;
885 		case CQE_CODE_RECEIVE:
886 		case CQE_CODE_RECEIVE_V1:
887 			dmabuf = container_of(cq_event, struct hbq_dmabuf,
888 					      cq_event);
889 			lpfc_in_buf_free(phba, &dmabuf->dbuf);
890 		}
891 	}
892 }
893 
894 /**
895  * lpfc_hba_free_post_buf - Perform lpfc uninitialization after HBA reset
896  * @phba: pointer to lpfc HBA data structure.
897  *
898  * This routine will cleanup posted ELS buffers after the HBA is reset
899  * when bringing down the SLI Layer.
900  *
901  *
902  * Return codes
903  *   void.
904  **/
905 static void
906 lpfc_hba_free_post_buf(struct lpfc_hba *phba)
907 {
908 	struct lpfc_sli *psli = &phba->sli;
909 	struct lpfc_sli_ring *pring;
910 	struct lpfc_dmabuf *mp, *next_mp;
911 	LIST_HEAD(buflist);
912 	int count;
913 
914 	if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
915 		lpfc_sli_hbqbuf_free_all(phba);
916 	else {
917 		/* Cleanup preposted buffers on the ELS ring */
918 		pring = &psli->sli3_ring[LPFC_ELS_RING];
919 		spin_lock_irq(&phba->hbalock);
920 		list_splice_init(&pring->postbufq, &buflist);
921 		spin_unlock_irq(&phba->hbalock);
922 
923 		count = 0;
924 		list_for_each_entry_safe(mp, next_mp, &buflist, list) {
925 			list_del(&mp->list);
926 			count++;
927 			lpfc_mbuf_free(phba, mp->virt, mp->phys);
928 			kfree(mp);
929 		}
930 
931 		spin_lock_irq(&phba->hbalock);
932 		pring->postbufq_cnt -= count;
933 		spin_unlock_irq(&phba->hbalock);
934 	}
935 }
936 
937 /**
938  * lpfc_hba_clean_txcmplq - Perform lpfc uninitialization after HBA reset
939  * @phba: pointer to lpfc HBA data structure.
940  *
941  * This routine will cleanup the txcmplq after the HBA is reset when bringing
942  * down the SLI Layer.
943  *
944  * Return codes
945  *   void
946  **/
947 static void
948 lpfc_hba_clean_txcmplq(struct lpfc_hba *phba)
949 {
950 	struct lpfc_sli *psli = &phba->sli;
951 	struct lpfc_queue *qp = NULL;
952 	struct lpfc_sli_ring *pring;
953 	LIST_HEAD(completions);
954 	int i;
955 	struct lpfc_iocbq *piocb, *next_iocb;
956 
957 	if (phba->sli_rev != LPFC_SLI_REV4) {
958 		for (i = 0; i < psli->num_rings; i++) {
959 			pring = &psli->sli3_ring[i];
960 			spin_lock_irq(&phba->hbalock);
961 			/* At this point in time the HBA is either reset or DOA
962 			 * Nothing should be on txcmplq as it will
963 			 * NEVER complete.
964 			 */
965 			list_splice_init(&pring->txcmplq, &completions);
966 			pring->txcmplq_cnt = 0;
967 			spin_unlock_irq(&phba->hbalock);
968 
969 			lpfc_sli_abort_iocb_ring(phba, pring);
970 		}
971 		/* Cancel all the IOCBs from the completions list */
972 		lpfc_sli_cancel_iocbs(phba, &completions,
973 				      IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
974 		return;
975 	}
976 	list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
977 		pring = qp->pring;
978 		if (!pring)
979 			continue;
980 		spin_lock_irq(&pring->ring_lock);
981 		list_for_each_entry_safe(piocb, next_iocb,
982 					 &pring->txcmplq, list)
983 			piocb->iocb_flag &= ~LPFC_IO_ON_TXCMPLQ;
984 		list_splice_init(&pring->txcmplq, &completions);
985 		pring->txcmplq_cnt = 0;
986 		spin_unlock_irq(&pring->ring_lock);
987 		lpfc_sli_abort_iocb_ring(phba, pring);
988 	}
989 	/* Cancel all the IOCBs from the completions list */
990 	lpfc_sli_cancel_iocbs(phba, &completions,
991 			      IOSTAT_LOCAL_REJECT, IOERR_SLI_ABORTED);
992 }
993 
994 /**
995  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
996  * @phba: pointer to lpfc HBA data structure.
997  *
998  * This routine will do uninitialization after the HBA is reset when bring
999  * down the SLI Layer.
1000  *
1001  * Return codes
1002  *   0 - success.
1003  *   Any other value - error.
1004  **/
1005 static int
1006 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
1007 {
1008 	lpfc_hba_free_post_buf(phba);
1009 	lpfc_hba_clean_txcmplq(phba);
1010 	return 0;
1011 }
1012 
1013 /**
1014  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
1015  * @phba: pointer to lpfc HBA data structure.
1016  *
1017  * This routine will do uninitialization after the HBA is reset when bring
1018  * down the SLI Layer.
1019  *
1020  * Return codes
1021  *   0 - success.
1022  *   Any other value - error.
1023  **/
1024 static int
1025 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
1026 {
1027 	struct lpfc_io_buf *psb, *psb_next;
1028 	struct lpfc_async_xchg_ctx *ctxp, *ctxp_next;
1029 	struct lpfc_sli4_hdw_queue *qp;
1030 	LIST_HEAD(aborts);
1031 	LIST_HEAD(nvme_aborts);
1032 	LIST_HEAD(nvmet_aborts);
1033 	struct lpfc_sglq *sglq_entry = NULL;
1034 	int cnt, idx;
1035 
1036 
1037 	lpfc_sli_hbqbuf_free_all(phba);
1038 	lpfc_hba_clean_txcmplq(phba);
1039 
1040 	/* At this point in time the HBA is either reset or DOA. Either
1041 	 * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
1042 	 * on the lpfc_els_sgl_list so that it can either be freed if the
1043 	 * driver is unloading or reposted if the driver is restarting
1044 	 * the port.
1045 	 */
1046 	spin_lock_irq(&phba->hbalock);  /* required for lpfc_els_sgl_list and */
1047 					/* scsl_buf_list */
1048 	/* sgl_list_lock required because worker thread uses this
1049 	 * list.
1050 	 */
1051 	spin_lock(&phba->sli4_hba.sgl_list_lock);
1052 	list_for_each_entry(sglq_entry,
1053 		&phba->sli4_hba.lpfc_abts_els_sgl_list, list)
1054 		sglq_entry->state = SGL_FREED;
1055 
1056 	list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
1057 			&phba->sli4_hba.lpfc_els_sgl_list);
1058 
1059 
1060 	spin_unlock(&phba->sli4_hba.sgl_list_lock);
1061 
1062 	/* abts_xxxx_buf_list_lock required because worker thread uses this
1063 	 * list.
1064 	 */
1065 	cnt = 0;
1066 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
1067 		qp = &phba->sli4_hba.hdwq[idx];
1068 
1069 		spin_lock(&qp->abts_io_buf_list_lock);
1070 		list_splice_init(&qp->lpfc_abts_io_buf_list,
1071 				 &aborts);
1072 
1073 		list_for_each_entry_safe(psb, psb_next, &aborts, list) {
1074 			psb->pCmd = NULL;
1075 			psb->status = IOSTAT_SUCCESS;
1076 			cnt++;
1077 		}
1078 		spin_lock(&qp->io_buf_list_put_lock);
1079 		list_splice_init(&aborts, &qp->lpfc_io_buf_list_put);
1080 		qp->put_io_bufs += qp->abts_scsi_io_bufs;
1081 		qp->put_io_bufs += qp->abts_nvme_io_bufs;
1082 		qp->abts_scsi_io_bufs = 0;
1083 		qp->abts_nvme_io_bufs = 0;
1084 		spin_unlock(&qp->io_buf_list_put_lock);
1085 		spin_unlock(&qp->abts_io_buf_list_lock);
1086 	}
1087 	spin_unlock_irq(&phba->hbalock);
1088 
1089 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
1090 		spin_lock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1091 		list_splice_init(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list,
1092 				 &nvmet_aborts);
1093 		spin_unlock_irq(&phba->sli4_hba.abts_nvmet_buf_list_lock);
1094 		list_for_each_entry_safe(ctxp, ctxp_next, &nvmet_aborts, list) {
1095 			ctxp->flag &= ~(LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP);
1096 			lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf);
1097 		}
1098 	}
1099 
1100 	lpfc_sli4_free_sp_events(phba);
1101 	return cnt;
1102 }
1103 
1104 /**
1105  * lpfc_hba_down_post - Wrapper func for hba down post routine
1106  * @phba: pointer to lpfc HBA data structure.
1107  *
1108  * This routine wraps the actual SLI3 or SLI4 routine for performing
1109  * uninitialization after the HBA is reset when bring down the SLI Layer.
1110  *
1111  * Return codes
1112  *   0 - success.
1113  *   Any other value - error.
1114  **/
1115 int
1116 lpfc_hba_down_post(struct lpfc_hba *phba)
1117 {
1118 	return (*phba->lpfc_hba_down_post)(phba);
1119 }
1120 
1121 /**
1122  * lpfc_hb_timeout - The HBA-timer timeout handler
1123  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1124  *
1125  * This is the HBA-timer timeout handler registered to the lpfc driver. When
1126  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
1127  * work-port-events bitmap and the worker thread is notified. This timeout
1128  * event will be used by the worker thread to invoke the actual timeout
1129  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
1130  * be performed in the timeout handler and the HBA timeout event bit shall
1131  * be cleared by the worker thread after it has taken the event bitmap out.
1132  **/
1133 static void
1134 lpfc_hb_timeout(struct timer_list *t)
1135 {
1136 	struct lpfc_hba *phba;
1137 	uint32_t tmo_posted;
1138 	unsigned long iflag;
1139 
1140 	phba = from_timer(phba, t, hb_tmofunc);
1141 
1142 	/* Check for heart beat timeout conditions */
1143 	spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1144 	tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
1145 	if (!tmo_posted)
1146 		phba->pport->work_port_events |= WORKER_HB_TMO;
1147 	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1148 
1149 	/* Tell the worker thread there is work to do */
1150 	if (!tmo_posted)
1151 		lpfc_worker_wake_up(phba);
1152 	return;
1153 }
1154 
1155 /**
1156  * lpfc_rrq_timeout - The RRQ-timer timeout handler
1157  * @t: timer context used to obtain the pointer to lpfc hba data structure.
1158  *
1159  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
1160  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
1161  * work-port-events bitmap and the worker thread is notified. This timeout
1162  * event will be used by the worker thread to invoke the actual timeout
1163  * handler routine, lpfc_rrq_handler. Any periodical operations will
1164  * be performed in the timeout handler and the RRQ timeout event bit shall
1165  * be cleared by the worker thread after it has taken the event bitmap out.
1166  **/
1167 static void
1168 lpfc_rrq_timeout(struct timer_list *t)
1169 {
1170 	struct lpfc_hba *phba;
1171 	unsigned long iflag;
1172 
1173 	phba = from_timer(phba, t, rrq_tmr);
1174 	spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
1175 	if (!(phba->pport->load_flag & FC_UNLOADING))
1176 		phba->hba_flag |= HBA_RRQ_ACTIVE;
1177 	else
1178 		phba->hba_flag &= ~HBA_RRQ_ACTIVE;
1179 	spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
1180 
1181 	if (!(phba->pport->load_flag & FC_UNLOADING))
1182 		lpfc_worker_wake_up(phba);
1183 }
1184 
1185 /**
1186  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
1187  * @phba: pointer to lpfc hba data structure.
1188  * @pmboxq: pointer to the driver internal queue element for mailbox command.
1189  *
1190  * This is the callback function to the lpfc heart-beat mailbox command.
1191  * If configured, the lpfc driver issues the heart-beat mailbox command to
1192  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1193  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1194  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1195  * heart-beat outstanding state. Once the mailbox command comes back and
1196  * no error conditions detected, the heart-beat mailbox command timer is
1197  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1198  * state is cleared for the next heart-beat. If the timer expired with the
1199  * heart-beat outstanding state set, the driver will put the HBA offline.
1200  **/
1201 static void
1202 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1203 {
1204 	unsigned long drvr_flag;
1205 
1206 	spin_lock_irqsave(&phba->hbalock, drvr_flag);
1207 	phba->hb_outstanding = 0;
1208 	spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1209 
1210 	/* Check and reset heart-beat timer is necessary */
1211 	mempool_free(pmboxq, phba->mbox_mem_pool);
1212 	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1213 		!(phba->link_state == LPFC_HBA_ERROR) &&
1214 		!(phba->pport->load_flag & FC_UNLOADING))
1215 		mod_timer(&phba->hb_tmofunc,
1216 			  jiffies +
1217 			  msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1218 	return;
1219 }
1220 
1221 /*
1222  * lpfc_idle_stat_delay_work - idle_stat tracking
1223  *
1224  * This routine tracks per-cq idle_stat and determines polling decisions.
1225  *
1226  * Return codes:
1227  *   None
1228  **/
1229 static void
1230 lpfc_idle_stat_delay_work(struct work_struct *work)
1231 {
1232 	struct lpfc_hba *phba = container_of(to_delayed_work(work),
1233 					     struct lpfc_hba,
1234 					     idle_stat_delay_work);
1235 	struct lpfc_queue *cq;
1236 	struct lpfc_sli4_hdw_queue *hdwq;
1237 	struct lpfc_idle_stat *idle_stat;
1238 	u32 i, idle_percent;
1239 	u64 wall, wall_idle, diff_wall, diff_idle, busy_time;
1240 
1241 	if (phba->pport->load_flag & FC_UNLOADING)
1242 		return;
1243 
1244 	if (phba->link_state == LPFC_HBA_ERROR ||
1245 	    phba->pport->fc_flag & FC_OFFLINE_MODE)
1246 		goto requeue;
1247 
1248 	for_each_present_cpu(i) {
1249 		hdwq = &phba->sli4_hba.hdwq[phba->sli4_hba.cpu_map[i].hdwq];
1250 		cq = hdwq->io_cq;
1251 
1252 		/* Skip if we've already handled this cq's primary CPU */
1253 		if (cq->chann != i)
1254 			continue;
1255 
1256 		idle_stat = &phba->sli4_hba.idle_stat[i];
1257 
1258 		/* get_cpu_idle_time returns values as running counters. Thus,
1259 		 * to know the amount for this period, the prior counter values
1260 		 * need to be subtracted from the current counter values.
1261 		 * From there, the idle time stat can be calculated as a
1262 		 * percentage of 100 - the sum of the other consumption times.
1263 		 */
1264 		wall_idle = get_cpu_idle_time(i, &wall, 1);
1265 		diff_idle = wall_idle - idle_stat->prev_idle;
1266 		diff_wall = wall - idle_stat->prev_wall;
1267 
1268 		if (diff_wall <= diff_idle)
1269 			busy_time = 0;
1270 		else
1271 			busy_time = diff_wall - diff_idle;
1272 
1273 		idle_percent = div64_u64(100 * busy_time, diff_wall);
1274 		idle_percent = 100 - idle_percent;
1275 
1276 		if (idle_percent < 15)
1277 			cq->poll_mode = LPFC_QUEUE_WORK;
1278 		else
1279 			cq->poll_mode = LPFC_IRQ_POLL;
1280 
1281 		idle_stat->prev_idle = wall_idle;
1282 		idle_stat->prev_wall = wall;
1283 	}
1284 
1285 requeue:
1286 	schedule_delayed_work(&phba->idle_stat_delay_work,
1287 			      msecs_to_jiffies(LPFC_IDLE_STAT_DELAY));
1288 }
1289 
1290 static void
1291 lpfc_hb_eq_delay_work(struct work_struct *work)
1292 {
1293 	struct lpfc_hba *phba = container_of(to_delayed_work(work),
1294 					     struct lpfc_hba, eq_delay_work);
1295 	struct lpfc_eq_intr_info *eqi, *eqi_new;
1296 	struct lpfc_queue *eq, *eq_next;
1297 	unsigned char *ena_delay = NULL;
1298 	uint32_t usdelay;
1299 	int i;
1300 
1301 	if (!phba->cfg_auto_imax || phba->pport->load_flag & FC_UNLOADING)
1302 		return;
1303 
1304 	if (phba->link_state == LPFC_HBA_ERROR ||
1305 	    phba->pport->fc_flag & FC_OFFLINE_MODE)
1306 		goto requeue;
1307 
1308 	ena_delay = kcalloc(phba->sli4_hba.num_possible_cpu, sizeof(*ena_delay),
1309 			    GFP_KERNEL);
1310 	if (!ena_delay)
1311 		goto requeue;
1312 
1313 	for (i = 0; i < phba->cfg_irq_chann; i++) {
1314 		/* Get the EQ corresponding to the IRQ vector */
1315 		eq = phba->sli4_hba.hba_eq_hdl[i].eq;
1316 		if (!eq)
1317 			continue;
1318 		if (eq->q_mode || eq->q_flag & HBA_EQ_DELAY_CHK) {
1319 			eq->q_flag &= ~HBA_EQ_DELAY_CHK;
1320 			ena_delay[eq->last_cpu] = 1;
1321 		}
1322 	}
1323 
1324 	for_each_present_cpu(i) {
1325 		eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
1326 		if (ena_delay[i]) {
1327 			usdelay = (eqi->icnt >> 10) * LPFC_EQ_DELAY_STEP;
1328 			if (usdelay > LPFC_MAX_AUTO_EQ_DELAY)
1329 				usdelay = LPFC_MAX_AUTO_EQ_DELAY;
1330 		} else {
1331 			usdelay = 0;
1332 		}
1333 
1334 		eqi->icnt = 0;
1335 
1336 		list_for_each_entry_safe(eq, eq_next, &eqi->list, cpu_list) {
1337 			if (unlikely(eq->last_cpu != i)) {
1338 				eqi_new = per_cpu_ptr(phba->sli4_hba.eq_info,
1339 						      eq->last_cpu);
1340 				list_move_tail(&eq->cpu_list, &eqi_new->list);
1341 				continue;
1342 			}
1343 			if (usdelay != eq->q_mode)
1344 				lpfc_modify_hba_eq_delay(phba, eq->hdwq, 1,
1345 							 usdelay);
1346 		}
1347 	}
1348 
1349 	kfree(ena_delay);
1350 
1351 requeue:
1352 	queue_delayed_work(phba->wq, &phba->eq_delay_work,
1353 			   msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
1354 }
1355 
1356 /**
1357  * lpfc_hb_mxp_handler - Multi-XRI pools handler to adjust XRI distribution
1358  * @phba: pointer to lpfc hba data structure.
1359  *
1360  * For each heartbeat, this routine does some heuristic methods to adjust
1361  * XRI distribution. The goal is to fully utilize free XRIs.
1362  **/
1363 static void lpfc_hb_mxp_handler(struct lpfc_hba *phba)
1364 {
1365 	u32 i;
1366 	u32 hwq_count;
1367 
1368 	hwq_count = phba->cfg_hdw_queue;
1369 	for (i = 0; i < hwq_count; i++) {
1370 		/* Adjust XRIs in private pool */
1371 		lpfc_adjust_pvt_pool_count(phba, i);
1372 
1373 		/* Adjust high watermark */
1374 		lpfc_adjust_high_watermark(phba, i);
1375 
1376 #ifdef LPFC_MXP_STAT
1377 		/* Snapshot pbl, pvt and busy count */
1378 		lpfc_snapshot_mxp(phba, i);
1379 #endif
1380 	}
1381 }
1382 
1383 /**
1384  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1385  * @phba: pointer to lpfc hba data structure.
1386  *
1387  * This is the actual HBA-timer timeout handler to be invoked by the worker
1388  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1389  * handler performs any periodic operations needed for the device. If such
1390  * periodic event has already been attended to either in the interrupt handler
1391  * or by processing slow-ring or fast-ring events within the HBA-timer
1392  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1393  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1394  * is configured and there is no heart-beat mailbox command outstanding, a
1395  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1396  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1397  * to offline.
1398  **/
1399 void
1400 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1401 {
1402 	struct lpfc_vport **vports;
1403 	LPFC_MBOXQ_t *pmboxq;
1404 	struct lpfc_dmabuf *buf_ptr;
1405 	int retval, i;
1406 	struct lpfc_sli *psli = &phba->sli;
1407 	LIST_HEAD(completions);
1408 
1409 	if (phba->cfg_xri_rebalancing) {
1410 		/* Multi-XRI pools handler */
1411 		lpfc_hb_mxp_handler(phba);
1412 	}
1413 
1414 	vports = lpfc_create_vport_work_array(phba);
1415 	if (vports != NULL)
1416 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
1417 			lpfc_rcv_seq_check_edtov(vports[i]);
1418 			lpfc_fdmi_change_check(vports[i]);
1419 		}
1420 	lpfc_destroy_vport_work_array(phba, vports);
1421 
1422 	if ((phba->link_state == LPFC_HBA_ERROR) ||
1423 		(phba->pport->load_flag & FC_UNLOADING) ||
1424 		(phba->pport->fc_flag & FC_OFFLINE_MODE))
1425 		return;
1426 
1427 	spin_lock_irq(&phba->pport->work_port_lock);
1428 
1429 	if (time_after(phba->last_completion_time +
1430 			msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL),
1431 			jiffies)) {
1432 		spin_unlock_irq(&phba->pport->work_port_lock);
1433 		if (!phba->hb_outstanding)
1434 			mod_timer(&phba->hb_tmofunc,
1435 				jiffies +
1436 				msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1437 		else
1438 			mod_timer(&phba->hb_tmofunc,
1439 				jiffies +
1440 				msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1441 		return;
1442 	}
1443 	spin_unlock_irq(&phba->pport->work_port_lock);
1444 
1445 	if (phba->elsbuf_cnt &&
1446 		(phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1447 		spin_lock_irq(&phba->hbalock);
1448 		list_splice_init(&phba->elsbuf, &completions);
1449 		phba->elsbuf_cnt = 0;
1450 		phba->elsbuf_prev_cnt = 0;
1451 		spin_unlock_irq(&phba->hbalock);
1452 
1453 		while (!list_empty(&completions)) {
1454 			list_remove_head(&completions, buf_ptr,
1455 				struct lpfc_dmabuf, list);
1456 			lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1457 			kfree(buf_ptr);
1458 		}
1459 	}
1460 	phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1461 
1462 	/* If there is no heart beat outstanding, issue a heartbeat command */
1463 	if (phba->cfg_enable_hba_heartbeat) {
1464 		if (!phba->hb_outstanding) {
1465 			if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1466 				(list_empty(&psli->mboxq))) {
1467 				pmboxq = mempool_alloc(phba->mbox_mem_pool,
1468 							GFP_KERNEL);
1469 				if (!pmboxq) {
1470 					mod_timer(&phba->hb_tmofunc,
1471 						 jiffies +
1472 						 msecs_to_jiffies(1000 *
1473 						 LPFC_HB_MBOX_INTERVAL));
1474 					return;
1475 				}
1476 
1477 				lpfc_heart_beat(phba, pmboxq);
1478 				pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1479 				pmboxq->vport = phba->pport;
1480 				retval = lpfc_sli_issue_mbox(phba, pmboxq,
1481 						MBX_NOWAIT);
1482 
1483 				if (retval != MBX_BUSY &&
1484 					retval != MBX_SUCCESS) {
1485 					mempool_free(pmboxq,
1486 							phba->mbox_mem_pool);
1487 					mod_timer(&phba->hb_tmofunc,
1488 						jiffies +
1489 						msecs_to_jiffies(1000 *
1490 						LPFC_HB_MBOX_INTERVAL));
1491 					return;
1492 				}
1493 				phba->skipped_hb = 0;
1494 				phba->hb_outstanding = 1;
1495 			} else if (time_before_eq(phba->last_completion_time,
1496 					phba->skipped_hb)) {
1497 				lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1498 					"2857 Last completion time not "
1499 					" updated in %d ms\n",
1500 					jiffies_to_msecs(jiffies
1501 						 - phba->last_completion_time));
1502 			} else
1503 				phba->skipped_hb = jiffies;
1504 
1505 			mod_timer(&phba->hb_tmofunc,
1506 				 jiffies +
1507 				 msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1508 			return;
1509 		} else {
1510 			/*
1511 			* If heart beat timeout called with hb_outstanding set
1512 			* we need to give the hb mailbox cmd a chance to
1513 			* complete or TMO.
1514 			*/
1515 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1516 					"0459 Adapter heartbeat still out"
1517 					"standing:last compl time was %d ms.\n",
1518 					jiffies_to_msecs(jiffies
1519 						 - phba->last_completion_time));
1520 			mod_timer(&phba->hb_tmofunc,
1521 				jiffies +
1522 				msecs_to_jiffies(1000 * LPFC_HB_MBOX_TIMEOUT));
1523 		}
1524 	} else {
1525 			mod_timer(&phba->hb_tmofunc,
1526 				jiffies +
1527 				msecs_to_jiffies(1000 * LPFC_HB_MBOX_INTERVAL));
1528 	}
1529 }
1530 
1531 /**
1532  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1533  * @phba: pointer to lpfc hba data structure.
1534  *
1535  * This routine is called to bring the HBA offline when HBA hardware error
1536  * other than Port Error 6 has been detected.
1537  **/
1538 static void
1539 lpfc_offline_eratt(struct lpfc_hba *phba)
1540 {
1541 	struct lpfc_sli   *psli = &phba->sli;
1542 
1543 	spin_lock_irq(&phba->hbalock);
1544 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1545 	spin_unlock_irq(&phba->hbalock);
1546 	lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1547 
1548 	lpfc_offline(phba);
1549 	lpfc_reset_barrier(phba);
1550 	spin_lock_irq(&phba->hbalock);
1551 	lpfc_sli_brdreset(phba);
1552 	spin_unlock_irq(&phba->hbalock);
1553 	lpfc_hba_down_post(phba);
1554 	lpfc_sli_brdready(phba, HS_MBRDY);
1555 	lpfc_unblock_mgmt_io(phba);
1556 	phba->link_state = LPFC_HBA_ERROR;
1557 	return;
1558 }
1559 
1560 /**
1561  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1562  * @phba: pointer to lpfc hba data structure.
1563  *
1564  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1565  * other than Port Error 6 has been detected.
1566  **/
1567 void
1568 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1569 {
1570 	spin_lock_irq(&phba->hbalock);
1571 	phba->link_state = LPFC_HBA_ERROR;
1572 	spin_unlock_irq(&phba->hbalock);
1573 
1574 	lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1575 	lpfc_sli_flush_io_rings(phba);
1576 	lpfc_offline(phba);
1577 	lpfc_hba_down_post(phba);
1578 	lpfc_unblock_mgmt_io(phba);
1579 }
1580 
1581 /**
1582  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1583  * @phba: pointer to lpfc hba data structure.
1584  *
1585  * This routine is invoked to handle the deferred HBA hardware error
1586  * conditions. This type of error is indicated by HBA by setting ER1
1587  * and another ER bit in the host status register. The driver will
1588  * wait until the ER1 bit clears before handling the error condition.
1589  **/
1590 static void
1591 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1592 {
1593 	uint32_t old_host_status = phba->work_hs;
1594 	struct lpfc_sli *psli = &phba->sli;
1595 
1596 	/* If the pci channel is offline, ignore possible errors,
1597 	 * since we cannot communicate with the pci card anyway.
1598 	 */
1599 	if (pci_channel_offline(phba->pcidev)) {
1600 		spin_lock_irq(&phba->hbalock);
1601 		phba->hba_flag &= ~DEFER_ERATT;
1602 		spin_unlock_irq(&phba->hbalock);
1603 		return;
1604 	}
1605 
1606 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1607 			"0479 Deferred Adapter Hardware Error "
1608 			"Data: x%x x%x x%x\n",
1609 			phba->work_hs, phba->work_status[0],
1610 			phba->work_status[1]);
1611 
1612 	spin_lock_irq(&phba->hbalock);
1613 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1614 	spin_unlock_irq(&phba->hbalock);
1615 
1616 
1617 	/*
1618 	 * Firmware stops when it triggred erratt. That could cause the I/Os
1619 	 * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1620 	 * SCSI layer retry it after re-establishing link.
1621 	 */
1622 	lpfc_sli_abort_fcp_rings(phba);
1623 
1624 	/*
1625 	 * There was a firmware error. Take the hba offline and then
1626 	 * attempt to restart it.
1627 	 */
1628 	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
1629 	lpfc_offline(phba);
1630 
1631 	/* Wait for the ER1 bit to clear.*/
1632 	while (phba->work_hs & HS_FFER1) {
1633 		msleep(100);
1634 		if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1635 			phba->work_hs = UNPLUG_ERR ;
1636 			break;
1637 		}
1638 		/* If driver is unloading let the worker thread continue */
1639 		if (phba->pport->load_flag & FC_UNLOADING) {
1640 			phba->work_hs = 0;
1641 			break;
1642 		}
1643 	}
1644 
1645 	/*
1646 	 * This is to ptrotect against a race condition in which
1647 	 * first write to the host attention register clear the
1648 	 * host status register.
1649 	 */
1650 	if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1651 		phba->work_hs = old_host_status & ~HS_FFER1;
1652 
1653 	spin_lock_irq(&phba->hbalock);
1654 	phba->hba_flag &= ~DEFER_ERATT;
1655 	spin_unlock_irq(&phba->hbalock);
1656 	phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1657 	phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1658 }
1659 
1660 static void
1661 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1662 {
1663 	struct lpfc_board_event_header board_event;
1664 	struct Scsi_Host *shost;
1665 
1666 	board_event.event_type = FC_REG_BOARD_EVENT;
1667 	board_event.subcategory = LPFC_EVENT_PORTINTERR;
1668 	shost = lpfc_shost_from_vport(phba->pport);
1669 	fc_host_post_vendor_event(shost, fc_get_event_number(),
1670 				  sizeof(board_event),
1671 				  (char *) &board_event,
1672 				  LPFC_NL_VENDOR_ID);
1673 }
1674 
1675 /**
1676  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1677  * @phba: pointer to lpfc hba data structure.
1678  *
1679  * This routine is invoked to handle the following HBA hardware error
1680  * conditions:
1681  * 1 - HBA error attention interrupt
1682  * 2 - DMA ring index out of range
1683  * 3 - Mailbox command came back as unknown
1684  **/
1685 static void
1686 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1687 {
1688 	struct lpfc_vport *vport = phba->pport;
1689 	struct lpfc_sli   *psli = &phba->sli;
1690 	uint32_t event_data;
1691 	unsigned long temperature;
1692 	struct temp_event temp_event_data;
1693 	struct Scsi_Host  *shost;
1694 
1695 	/* If the pci channel is offline, ignore possible errors,
1696 	 * since we cannot communicate with the pci card anyway.
1697 	 */
1698 	if (pci_channel_offline(phba->pcidev)) {
1699 		spin_lock_irq(&phba->hbalock);
1700 		phba->hba_flag &= ~DEFER_ERATT;
1701 		spin_unlock_irq(&phba->hbalock);
1702 		return;
1703 	}
1704 
1705 	/* If resets are disabled then leave the HBA alone and return */
1706 	if (!phba->cfg_enable_hba_reset)
1707 		return;
1708 
1709 	/* Send an internal error event to mgmt application */
1710 	lpfc_board_errevt_to_mgmt(phba);
1711 
1712 	if (phba->hba_flag & DEFER_ERATT)
1713 		lpfc_handle_deferred_eratt(phba);
1714 
1715 	if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1716 		if (phba->work_hs & HS_FFER6)
1717 			/* Re-establishing Link */
1718 			lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1719 					"1301 Re-establishing Link "
1720 					"Data: x%x x%x x%x\n",
1721 					phba->work_hs, phba->work_status[0],
1722 					phba->work_status[1]);
1723 		if (phba->work_hs & HS_FFER8)
1724 			/* Device Zeroization */
1725 			lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1726 					"2861 Host Authentication device "
1727 					"zeroization Data:x%x x%x x%x\n",
1728 					phba->work_hs, phba->work_status[0],
1729 					phba->work_status[1]);
1730 
1731 		spin_lock_irq(&phba->hbalock);
1732 		psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1733 		spin_unlock_irq(&phba->hbalock);
1734 
1735 		/*
1736 		* Firmware stops when it triggled erratt with HS_FFER6.
1737 		* That could cause the I/Os dropped by the firmware.
1738 		* Error iocb (I/O) on txcmplq and let the SCSI layer
1739 		* retry it after re-establishing link.
1740 		*/
1741 		lpfc_sli_abort_fcp_rings(phba);
1742 
1743 		/*
1744 		 * There was a firmware error.  Take the hba offline and then
1745 		 * attempt to restart it.
1746 		 */
1747 		lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1748 		lpfc_offline(phba);
1749 		lpfc_sli_brdrestart(phba);
1750 		if (lpfc_online(phba) == 0) {	/* Initialize the HBA */
1751 			lpfc_unblock_mgmt_io(phba);
1752 			return;
1753 		}
1754 		lpfc_unblock_mgmt_io(phba);
1755 	} else if (phba->work_hs & HS_CRIT_TEMP) {
1756 		temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1757 		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1758 		temp_event_data.event_code = LPFC_CRIT_TEMP;
1759 		temp_event_data.data = (uint32_t)temperature;
1760 
1761 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1762 				"0406 Adapter maximum temperature exceeded "
1763 				"(%ld), taking this port offline "
1764 				"Data: x%x x%x x%x\n",
1765 				temperature, phba->work_hs,
1766 				phba->work_status[0], phba->work_status[1]);
1767 
1768 		shost = lpfc_shost_from_vport(phba->pport);
1769 		fc_host_post_vendor_event(shost, fc_get_event_number(),
1770 					  sizeof(temp_event_data),
1771 					  (char *) &temp_event_data,
1772 					  SCSI_NL_VID_TYPE_PCI
1773 					  | PCI_VENDOR_ID_EMULEX);
1774 
1775 		spin_lock_irq(&phba->hbalock);
1776 		phba->over_temp_state = HBA_OVER_TEMP;
1777 		spin_unlock_irq(&phba->hbalock);
1778 		lpfc_offline_eratt(phba);
1779 
1780 	} else {
1781 		/* The if clause above forces this code path when the status
1782 		 * failure is a value other than FFER6. Do not call the offline
1783 		 * twice. This is the adapter hardware error path.
1784 		 */
1785 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1786 				"0457 Adapter Hardware Error "
1787 				"Data: x%x x%x x%x\n",
1788 				phba->work_hs,
1789 				phba->work_status[0], phba->work_status[1]);
1790 
1791 		event_data = FC_REG_DUMP_EVENT;
1792 		shost = lpfc_shost_from_vport(vport);
1793 		fc_host_post_vendor_event(shost, fc_get_event_number(),
1794 				sizeof(event_data), (char *) &event_data,
1795 				SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1796 
1797 		lpfc_offline_eratt(phba);
1798 	}
1799 	return;
1800 }
1801 
1802 /**
1803  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
1804  * @phba: pointer to lpfc hba data structure.
1805  * @mbx_action: flag for mailbox shutdown action.
1806  * @en_rn_msg: send reset/port recovery message.
1807  * This routine is invoked to perform an SLI4 port PCI function reset in
1808  * response to port status register polling attention. It waits for port
1809  * status register (ERR, RDY, RN) bits before proceeding with function reset.
1810  * During this process, interrupt vectors are freed and later requested
1811  * for handling possible port resource change.
1812  **/
1813 static int
1814 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action,
1815 			    bool en_rn_msg)
1816 {
1817 	int rc;
1818 	uint32_t intr_mode;
1819 
1820 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
1821 	    LPFC_SLI_INTF_IF_TYPE_2) {
1822 		/*
1823 		 * On error status condition, driver need to wait for port
1824 		 * ready before performing reset.
1825 		 */
1826 		rc = lpfc_sli4_pdev_status_reg_wait(phba);
1827 		if (rc)
1828 			return rc;
1829 	}
1830 
1831 	/* need reset: attempt for port recovery */
1832 	if (en_rn_msg)
1833 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1834 				"2887 Reset Needed: Attempting Port "
1835 				"Recovery...\n");
1836 	lpfc_offline_prep(phba, mbx_action);
1837 	lpfc_sli_flush_io_rings(phba);
1838 	lpfc_offline(phba);
1839 	/* release interrupt for possible resource change */
1840 	lpfc_sli4_disable_intr(phba);
1841 	rc = lpfc_sli_brdrestart(phba);
1842 	if (rc) {
1843 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1844 				"6309 Failed to restart board\n");
1845 		return rc;
1846 	}
1847 	/* request and enable interrupt */
1848 	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
1849 	if (intr_mode == LPFC_INTR_ERROR) {
1850 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1851 				"3175 Failed to enable interrupt\n");
1852 		return -EIO;
1853 	}
1854 	phba->intr_mode = intr_mode;
1855 	rc = lpfc_online(phba);
1856 	if (rc == 0)
1857 		lpfc_unblock_mgmt_io(phba);
1858 
1859 	return rc;
1860 }
1861 
1862 /**
1863  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1864  * @phba: pointer to lpfc hba data structure.
1865  *
1866  * This routine is invoked to handle the SLI4 HBA hardware error attention
1867  * conditions.
1868  **/
1869 static void
1870 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1871 {
1872 	struct lpfc_vport *vport = phba->pport;
1873 	uint32_t event_data;
1874 	struct Scsi_Host *shost;
1875 	uint32_t if_type;
1876 	struct lpfc_register portstat_reg = {0};
1877 	uint32_t reg_err1, reg_err2;
1878 	uint32_t uerrlo_reg, uemasklo_reg;
1879 	uint32_t smphr_port_status = 0, pci_rd_rc1, pci_rd_rc2;
1880 	bool en_rn_msg = true;
1881 	struct temp_event temp_event_data;
1882 	struct lpfc_register portsmphr_reg;
1883 	int rc, i;
1884 
1885 	/* If the pci channel is offline, ignore possible errors, since
1886 	 * we cannot communicate with the pci card anyway.
1887 	 */
1888 	if (pci_channel_offline(phba->pcidev)) {
1889 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1890 				"3166 pci channel is offline\n");
1891 		lpfc_sli4_offline_eratt(phba);
1892 		return;
1893 	}
1894 
1895 	memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
1896 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1897 	switch (if_type) {
1898 	case LPFC_SLI_INTF_IF_TYPE_0:
1899 		pci_rd_rc1 = lpfc_readl(
1900 				phba->sli4_hba.u.if_type0.UERRLOregaddr,
1901 				&uerrlo_reg);
1902 		pci_rd_rc2 = lpfc_readl(
1903 				phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
1904 				&uemasklo_reg);
1905 		/* consider PCI bus read error as pci_channel_offline */
1906 		if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
1907 			return;
1908 		if (!(phba->hba_flag & HBA_RECOVERABLE_UE)) {
1909 			lpfc_sli4_offline_eratt(phba);
1910 			return;
1911 		}
1912 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1913 				"7623 Checking UE recoverable");
1914 
1915 		for (i = 0; i < phba->sli4_hba.ue_to_sr / 1000; i++) {
1916 			if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1917 				       &portsmphr_reg.word0))
1918 				continue;
1919 
1920 			smphr_port_status = bf_get(lpfc_port_smphr_port_status,
1921 						   &portsmphr_reg);
1922 			if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1923 			    LPFC_PORT_SEM_UE_RECOVERABLE)
1924 				break;
1925 			/*Sleep for 1Sec, before checking SEMAPHORE */
1926 			msleep(1000);
1927 		}
1928 
1929 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1930 				"4827 smphr_port_status x%x : Waited %dSec",
1931 				smphr_port_status, i);
1932 
1933 		/* Recoverable UE, reset the HBA device */
1934 		if ((smphr_port_status & LPFC_PORT_SEM_MASK) ==
1935 		    LPFC_PORT_SEM_UE_RECOVERABLE) {
1936 			for (i = 0; i < 20; i++) {
1937 				msleep(1000);
1938 				if (!lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
1939 				    &portsmphr_reg.word0) &&
1940 				    (LPFC_POST_STAGE_PORT_READY ==
1941 				     bf_get(lpfc_port_smphr_port_status,
1942 				     &portsmphr_reg))) {
1943 					rc = lpfc_sli4_port_sta_fn_reset(phba,
1944 						LPFC_MBX_NO_WAIT, en_rn_msg);
1945 					if (rc == 0)
1946 						return;
1947 					lpfc_printf_log(phba, KERN_ERR,
1948 						LOG_TRACE_EVENT,
1949 						"4215 Failed to recover UE");
1950 					break;
1951 				}
1952 			}
1953 		}
1954 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1955 				"7624 Firmware not ready: Failing UE recovery,"
1956 				" waited %dSec", i);
1957 		phba->link_state = LPFC_HBA_ERROR;
1958 		break;
1959 
1960 	case LPFC_SLI_INTF_IF_TYPE_2:
1961 	case LPFC_SLI_INTF_IF_TYPE_6:
1962 		pci_rd_rc1 = lpfc_readl(
1963 				phba->sli4_hba.u.if_type2.STATUSregaddr,
1964 				&portstat_reg.word0);
1965 		/* consider PCI bus read error as pci_channel_offline */
1966 		if (pci_rd_rc1 == -EIO) {
1967 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1968 				"3151 PCI bus read access failure: x%x\n",
1969 				readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
1970 			lpfc_sli4_offline_eratt(phba);
1971 			return;
1972 		}
1973 		reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
1974 		reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
1975 		if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
1976 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
1977 					"2889 Port Overtemperature event, "
1978 					"taking port offline Data: x%x x%x\n",
1979 					reg_err1, reg_err2);
1980 
1981 			phba->sfp_alarm |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
1982 			temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1983 			temp_event_data.event_code = LPFC_CRIT_TEMP;
1984 			temp_event_data.data = 0xFFFFFFFF;
1985 
1986 			shost = lpfc_shost_from_vport(phba->pport);
1987 			fc_host_post_vendor_event(shost, fc_get_event_number(),
1988 						  sizeof(temp_event_data),
1989 						  (char *)&temp_event_data,
1990 						  SCSI_NL_VID_TYPE_PCI
1991 						  | PCI_VENDOR_ID_EMULEX);
1992 
1993 			spin_lock_irq(&phba->hbalock);
1994 			phba->over_temp_state = HBA_OVER_TEMP;
1995 			spin_unlock_irq(&phba->hbalock);
1996 			lpfc_sli4_offline_eratt(phba);
1997 			return;
1998 		}
1999 		if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2000 		    reg_err2 == SLIPORT_ERR2_REG_FW_RESTART) {
2001 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2002 					"3143 Port Down: Firmware Update "
2003 					"Detected\n");
2004 			en_rn_msg = false;
2005 		} else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2006 			 reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2007 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2008 					"3144 Port Down: Debug Dump\n");
2009 		else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2010 			 reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
2011 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2012 					"3145 Port Down: Provisioning\n");
2013 
2014 		/* If resets are disabled then leave the HBA alone and return */
2015 		if (!phba->cfg_enable_hba_reset)
2016 			return;
2017 
2018 		/* Check port status register for function reset */
2019 		rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT,
2020 				en_rn_msg);
2021 		if (rc == 0) {
2022 			/* don't report event on forced debug dump */
2023 			if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
2024 			    reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
2025 				return;
2026 			else
2027 				break;
2028 		}
2029 		/* fall through for not able to recover */
2030 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2031 				"3152 Unrecoverable error\n");
2032 		phba->link_state = LPFC_HBA_ERROR;
2033 		break;
2034 	case LPFC_SLI_INTF_IF_TYPE_1:
2035 	default:
2036 		break;
2037 	}
2038 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2039 			"3123 Report dump event to upper layer\n");
2040 	/* Send an internal error event to mgmt application */
2041 	lpfc_board_errevt_to_mgmt(phba);
2042 
2043 	event_data = FC_REG_DUMP_EVENT;
2044 	shost = lpfc_shost_from_vport(vport);
2045 	fc_host_post_vendor_event(shost, fc_get_event_number(),
2046 				  sizeof(event_data), (char *) &event_data,
2047 				  SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
2048 }
2049 
2050 /**
2051  * lpfc_handle_eratt - Wrapper func for handling hba error attention
2052  * @phba: pointer to lpfc HBA data structure.
2053  *
2054  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
2055  * routine from the API jump table function pointer from the lpfc_hba struct.
2056  *
2057  * Return codes
2058  *   0 - success.
2059  *   Any other value - error.
2060  **/
2061 void
2062 lpfc_handle_eratt(struct lpfc_hba *phba)
2063 {
2064 	(*phba->lpfc_handle_eratt)(phba);
2065 }
2066 
2067 /**
2068  * lpfc_handle_latt - The HBA link event handler
2069  * @phba: pointer to lpfc hba data structure.
2070  *
2071  * This routine is invoked from the worker thread to handle a HBA host
2072  * attention link event. SLI3 only.
2073  **/
2074 void
2075 lpfc_handle_latt(struct lpfc_hba *phba)
2076 {
2077 	struct lpfc_vport *vport = phba->pport;
2078 	struct lpfc_sli   *psli = &phba->sli;
2079 	LPFC_MBOXQ_t *pmb;
2080 	volatile uint32_t control;
2081 	struct lpfc_dmabuf *mp;
2082 	int rc = 0;
2083 
2084 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2085 	if (!pmb) {
2086 		rc = 1;
2087 		goto lpfc_handle_latt_err_exit;
2088 	}
2089 
2090 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2091 	if (!mp) {
2092 		rc = 2;
2093 		goto lpfc_handle_latt_free_pmb;
2094 	}
2095 
2096 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
2097 	if (!mp->virt) {
2098 		rc = 3;
2099 		goto lpfc_handle_latt_free_mp;
2100 	}
2101 
2102 	/* Cleanup any outstanding ELS commands */
2103 	lpfc_els_flush_all_cmd(phba);
2104 
2105 	psli->slistat.link_event++;
2106 	lpfc_read_topology(phba, pmb, mp);
2107 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
2108 	pmb->vport = vport;
2109 	/* Block ELS IOCBs until we have processed this mbox command */
2110 	phba->sli.sli3_ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
2111 	rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
2112 	if (rc == MBX_NOT_FINISHED) {
2113 		rc = 4;
2114 		goto lpfc_handle_latt_free_mbuf;
2115 	}
2116 
2117 	/* Clear Link Attention in HA REG */
2118 	spin_lock_irq(&phba->hbalock);
2119 	writel(HA_LATT, phba->HAregaddr);
2120 	readl(phba->HAregaddr); /* flush */
2121 	spin_unlock_irq(&phba->hbalock);
2122 
2123 	return;
2124 
2125 lpfc_handle_latt_free_mbuf:
2126 	phba->sli.sli3_ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
2127 	lpfc_mbuf_free(phba, mp->virt, mp->phys);
2128 lpfc_handle_latt_free_mp:
2129 	kfree(mp);
2130 lpfc_handle_latt_free_pmb:
2131 	mempool_free(pmb, phba->mbox_mem_pool);
2132 lpfc_handle_latt_err_exit:
2133 	/* Enable Link attention interrupts */
2134 	spin_lock_irq(&phba->hbalock);
2135 	psli->sli_flag |= LPFC_PROCESS_LA;
2136 	control = readl(phba->HCregaddr);
2137 	control |= HC_LAINT_ENA;
2138 	writel(control, phba->HCregaddr);
2139 	readl(phba->HCregaddr); /* flush */
2140 
2141 	/* Clear Link Attention in HA REG */
2142 	writel(HA_LATT, phba->HAregaddr);
2143 	readl(phba->HAregaddr); /* flush */
2144 	spin_unlock_irq(&phba->hbalock);
2145 	lpfc_linkdown(phba);
2146 	phba->link_state = LPFC_HBA_ERROR;
2147 
2148 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
2149 			"0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
2150 
2151 	return;
2152 }
2153 
2154 /**
2155  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
2156  * @phba: pointer to lpfc hba data structure.
2157  * @vpd: pointer to the vital product data.
2158  * @len: length of the vital product data in bytes.
2159  *
2160  * This routine parses the Vital Product Data (VPD). The VPD is treated as
2161  * an array of characters. In this routine, the ModelName, ProgramType, and
2162  * ModelDesc, etc. fields of the phba data structure will be populated.
2163  *
2164  * Return codes
2165  *   0 - pointer to the VPD passed in is NULL
2166  *   1 - success
2167  **/
2168 int
2169 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
2170 {
2171 	uint8_t lenlo, lenhi;
2172 	int Length;
2173 	int i, j;
2174 	int finished = 0;
2175 	int index = 0;
2176 
2177 	if (!vpd)
2178 		return 0;
2179 
2180 	/* Vital Product */
2181 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2182 			"0455 Vital Product Data: x%x x%x x%x x%x\n",
2183 			(uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
2184 			(uint32_t) vpd[3]);
2185 	while (!finished && (index < (len - 4))) {
2186 		switch (vpd[index]) {
2187 		case 0x82:
2188 		case 0x91:
2189 			index += 1;
2190 			lenlo = vpd[index];
2191 			index += 1;
2192 			lenhi = vpd[index];
2193 			index += 1;
2194 			i = ((((unsigned short)lenhi) << 8) + lenlo);
2195 			index += i;
2196 			break;
2197 		case 0x90:
2198 			index += 1;
2199 			lenlo = vpd[index];
2200 			index += 1;
2201 			lenhi = vpd[index];
2202 			index += 1;
2203 			Length = ((((unsigned short)lenhi) << 8) + lenlo);
2204 			if (Length > len - index)
2205 				Length = len - index;
2206 			while (Length > 0) {
2207 			/* Look for Serial Number */
2208 			if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
2209 				index += 2;
2210 				i = vpd[index];
2211 				index += 1;
2212 				j = 0;
2213 				Length -= (3+i);
2214 				while(i--) {
2215 					phba->SerialNumber[j++] = vpd[index++];
2216 					if (j == 31)
2217 						break;
2218 				}
2219 				phba->SerialNumber[j] = 0;
2220 				continue;
2221 			}
2222 			else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
2223 				phba->vpd_flag |= VPD_MODEL_DESC;
2224 				index += 2;
2225 				i = vpd[index];
2226 				index += 1;
2227 				j = 0;
2228 				Length -= (3+i);
2229 				while(i--) {
2230 					phba->ModelDesc[j++] = vpd[index++];
2231 					if (j == 255)
2232 						break;
2233 				}
2234 				phba->ModelDesc[j] = 0;
2235 				continue;
2236 			}
2237 			else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
2238 				phba->vpd_flag |= VPD_MODEL_NAME;
2239 				index += 2;
2240 				i = vpd[index];
2241 				index += 1;
2242 				j = 0;
2243 				Length -= (3+i);
2244 				while(i--) {
2245 					phba->ModelName[j++] = vpd[index++];
2246 					if (j == 79)
2247 						break;
2248 				}
2249 				phba->ModelName[j] = 0;
2250 				continue;
2251 			}
2252 			else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
2253 				phba->vpd_flag |= VPD_PROGRAM_TYPE;
2254 				index += 2;
2255 				i = vpd[index];
2256 				index += 1;
2257 				j = 0;
2258 				Length -= (3+i);
2259 				while(i--) {
2260 					phba->ProgramType[j++] = vpd[index++];
2261 					if (j == 255)
2262 						break;
2263 				}
2264 				phba->ProgramType[j] = 0;
2265 				continue;
2266 			}
2267 			else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
2268 				phba->vpd_flag |= VPD_PORT;
2269 				index += 2;
2270 				i = vpd[index];
2271 				index += 1;
2272 				j = 0;
2273 				Length -= (3+i);
2274 				while(i--) {
2275 					if ((phba->sli_rev == LPFC_SLI_REV4) &&
2276 					    (phba->sli4_hba.pport_name_sta ==
2277 					     LPFC_SLI4_PPNAME_GET)) {
2278 						j++;
2279 						index++;
2280 					} else
2281 						phba->Port[j++] = vpd[index++];
2282 					if (j == 19)
2283 						break;
2284 				}
2285 				if ((phba->sli_rev != LPFC_SLI_REV4) ||
2286 				    (phba->sli4_hba.pport_name_sta ==
2287 				     LPFC_SLI4_PPNAME_NON))
2288 					phba->Port[j] = 0;
2289 				continue;
2290 			}
2291 			else {
2292 				index += 2;
2293 				i = vpd[index];
2294 				index += 1;
2295 				index += i;
2296 				Length -= (3 + i);
2297 			}
2298 		}
2299 		finished = 0;
2300 		break;
2301 		case 0x78:
2302 			finished = 1;
2303 			break;
2304 		default:
2305 			index ++;
2306 			break;
2307 		}
2308 	}
2309 
2310 	return(1);
2311 }
2312 
2313 /**
2314  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
2315  * @phba: pointer to lpfc hba data structure.
2316  * @mdp: pointer to the data structure to hold the derived model name.
2317  * @descp: pointer to the data structure to hold the derived description.
2318  *
2319  * This routine retrieves HBA's description based on its registered PCI device
2320  * ID. The @descp passed into this function points to an array of 256 chars. It
2321  * shall be returned with the model name, maximum speed, and the host bus type.
2322  * The @mdp passed into this function points to an array of 80 chars. When the
2323  * function returns, the @mdp will be filled with the model name.
2324  **/
2325 static void
2326 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
2327 {
2328 	lpfc_vpd_t *vp;
2329 	uint16_t dev_id = phba->pcidev->device;
2330 	int max_speed;
2331 	int GE = 0;
2332 	int oneConnect = 0; /* default is not a oneConnect */
2333 	struct {
2334 		char *name;
2335 		char *bus;
2336 		char *function;
2337 	} m = {"<Unknown>", "", ""};
2338 
2339 	if (mdp && mdp[0] != '\0'
2340 		&& descp && descp[0] != '\0')
2341 		return;
2342 
2343 	if (phba->lmt & LMT_64Gb)
2344 		max_speed = 64;
2345 	else if (phba->lmt & LMT_32Gb)
2346 		max_speed = 32;
2347 	else if (phba->lmt & LMT_16Gb)
2348 		max_speed = 16;
2349 	else if (phba->lmt & LMT_10Gb)
2350 		max_speed = 10;
2351 	else if (phba->lmt & LMT_8Gb)
2352 		max_speed = 8;
2353 	else if (phba->lmt & LMT_4Gb)
2354 		max_speed = 4;
2355 	else if (phba->lmt & LMT_2Gb)
2356 		max_speed = 2;
2357 	else if (phba->lmt & LMT_1Gb)
2358 		max_speed = 1;
2359 	else
2360 		max_speed = 0;
2361 
2362 	vp = &phba->vpd;
2363 
2364 	switch (dev_id) {
2365 	case PCI_DEVICE_ID_FIREFLY:
2366 		m = (typeof(m)){"LP6000", "PCI",
2367 				"Obsolete, Unsupported Fibre Channel Adapter"};
2368 		break;
2369 	case PCI_DEVICE_ID_SUPERFLY:
2370 		if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
2371 			m = (typeof(m)){"LP7000", "PCI", ""};
2372 		else
2373 			m = (typeof(m)){"LP7000E", "PCI", ""};
2374 		m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2375 		break;
2376 	case PCI_DEVICE_ID_DRAGONFLY:
2377 		m = (typeof(m)){"LP8000", "PCI",
2378 				"Obsolete, Unsupported Fibre Channel Adapter"};
2379 		break;
2380 	case PCI_DEVICE_ID_CENTAUR:
2381 		if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
2382 			m = (typeof(m)){"LP9002", "PCI", ""};
2383 		else
2384 			m = (typeof(m)){"LP9000", "PCI", ""};
2385 		m.function = "Obsolete, Unsupported Fibre Channel Adapter";
2386 		break;
2387 	case PCI_DEVICE_ID_RFLY:
2388 		m = (typeof(m)){"LP952", "PCI",
2389 				"Obsolete, Unsupported Fibre Channel Adapter"};
2390 		break;
2391 	case PCI_DEVICE_ID_PEGASUS:
2392 		m = (typeof(m)){"LP9802", "PCI-X",
2393 				"Obsolete, Unsupported Fibre Channel Adapter"};
2394 		break;
2395 	case PCI_DEVICE_ID_THOR:
2396 		m = (typeof(m)){"LP10000", "PCI-X",
2397 				"Obsolete, Unsupported Fibre Channel Adapter"};
2398 		break;
2399 	case PCI_DEVICE_ID_VIPER:
2400 		m = (typeof(m)){"LPX1000",  "PCI-X",
2401 				"Obsolete, Unsupported Fibre Channel Adapter"};
2402 		break;
2403 	case PCI_DEVICE_ID_PFLY:
2404 		m = (typeof(m)){"LP982", "PCI-X",
2405 				"Obsolete, Unsupported Fibre Channel Adapter"};
2406 		break;
2407 	case PCI_DEVICE_ID_TFLY:
2408 		m = (typeof(m)){"LP1050", "PCI-X",
2409 				"Obsolete, Unsupported Fibre Channel Adapter"};
2410 		break;
2411 	case PCI_DEVICE_ID_HELIOS:
2412 		m = (typeof(m)){"LP11000", "PCI-X2",
2413 				"Obsolete, Unsupported Fibre Channel Adapter"};
2414 		break;
2415 	case PCI_DEVICE_ID_HELIOS_SCSP:
2416 		m = (typeof(m)){"LP11000-SP", "PCI-X2",
2417 				"Obsolete, Unsupported Fibre Channel Adapter"};
2418 		break;
2419 	case PCI_DEVICE_ID_HELIOS_DCSP:
2420 		m = (typeof(m)){"LP11002-SP",  "PCI-X2",
2421 				"Obsolete, Unsupported Fibre Channel Adapter"};
2422 		break;
2423 	case PCI_DEVICE_ID_NEPTUNE:
2424 		m = (typeof(m)){"LPe1000", "PCIe",
2425 				"Obsolete, Unsupported Fibre Channel Adapter"};
2426 		break;
2427 	case PCI_DEVICE_ID_NEPTUNE_SCSP:
2428 		m = (typeof(m)){"LPe1000-SP", "PCIe",
2429 				"Obsolete, Unsupported Fibre Channel Adapter"};
2430 		break;
2431 	case PCI_DEVICE_ID_NEPTUNE_DCSP:
2432 		m = (typeof(m)){"LPe1002-SP", "PCIe",
2433 				"Obsolete, Unsupported Fibre Channel Adapter"};
2434 		break;
2435 	case PCI_DEVICE_ID_BMID:
2436 		m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
2437 		break;
2438 	case PCI_DEVICE_ID_BSMB:
2439 		m = (typeof(m)){"LP111", "PCI-X2",
2440 				"Obsolete, Unsupported Fibre Channel Adapter"};
2441 		break;
2442 	case PCI_DEVICE_ID_ZEPHYR:
2443 		m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2444 		break;
2445 	case PCI_DEVICE_ID_ZEPHYR_SCSP:
2446 		m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
2447 		break;
2448 	case PCI_DEVICE_ID_ZEPHYR_DCSP:
2449 		m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
2450 		GE = 1;
2451 		break;
2452 	case PCI_DEVICE_ID_ZMID:
2453 		m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
2454 		break;
2455 	case PCI_DEVICE_ID_ZSMB:
2456 		m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
2457 		break;
2458 	case PCI_DEVICE_ID_LP101:
2459 		m = (typeof(m)){"LP101", "PCI-X",
2460 				"Obsolete, Unsupported Fibre Channel Adapter"};
2461 		break;
2462 	case PCI_DEVICE_ID_LP10000S:
2463 		m = (typeof(m)){"LP10000-S", "PCI",
2464 				"Obsolete, Unsupported Fibre Channel Adapter"};
2465 		break;
2466 	case PCI_DEVICE_ID_LP11000S:
2467 		m = (typeof(m)){"LP11000-S", "PCI-X2",
2468 				"Obsolete, Unsupported Fibre Channel Adapter"};
2469 		break;
2470 	case PCI_DEVICE_ID_LPE11000S:
2471 		m = (typeof(m)){"LPe11000-S", "PCIe",
2472 				"Obsolete, Unsupported Fibre Channel Adapter"};
2473 		break;
2474 	case PCI_DEVICE_ID_SAT:
2475 		m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
2476 		break;
2477 	case PCI_DEVICE_ID_SAT_MID:
2478 		m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
2479 		break;
2480 	case PCI_DEVICE_ID_SAT_SMB:
2481 		m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
2482 		break;
2483 	case PCI_DEVICE_ID_SAT_DCSP:
2484 		m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
2485 		break;
2486 	case PCI_DEVICE_ID_SAT_SCSP:
2487 		m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
2488 		break;
2489 	case PCI_DEVICE_ID_SAT_S:
2490 		m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
2491 		break;
2492 	case PCI_DEVICE_ID_HORNET:
2493 		m = (typeof(m)){"LP21000", "PCIe",
2494 				"Obsolete, Unsupported FCoE Adapter"};
2495 		GE = 1;
2496 		break;
2497 	case PCI_DEVICE_ID_PROTEUS_VF:
2498 		m = (typeof(m)){"LPev12000", "PCIe IOV",
2499 				"Obsolete, Unsupported Fibre Channel Adapter"};
2500 		break;
2501 	case PCI_DEVICE_ID_PROTEUS_PF:
2502 		m = (typeof(m)){"LPev12000", "PCIe IOV",
2503 				"Obsolete, Unsupported Fibre Channel Adapter"};
2504 		break;
2505 	case PCI_DEVICE_ID_PROTEUS_S:
2506 		m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
2507 				"Obsolete, Unsupported Fibre Channel Adapter"};
2508 		break;
2509 	case PCI_DEVICE_ID_TIGERSHARK:
2510 		oneConnect = 1;
2511 		m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2512 		break;
2513 	case PCI_DEVICE_ID_TOMCAT:
2514 		oneConnect = 1;
2515 		m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2516 		break;
2517 	case PCI_DEVICE_ID_FALCON:
2518 		m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2519 				"EmulexSecure Fibre"};
2520 		break;
2521 	case PCI_DEVICE_ID_BALIUS:
2522 		m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2523 				"Obsolete, Unsupported Fibre Channel Adapter"};
2524 		break;
2525 	case PCI_DEVICE_ID_LANCER_FC:
2526 		m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2527 		break;
2528 	case PCI_DEVICE_ID_LANCER_FC_VF:
2529 		m = (typeof(m)){"LPe16000", "PCIe",
2530 				"Obsolete, Unsupported Fibre Channel Adapter"};
2531 		break;
2532 	case PCI_DEVICE_ID_LANCER_FCOE:
2533 		oneConnect = 1;
2534 		m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2535 		break;
2536 	case PCI_DEVICE_ID_LANCER_FCOE_VF:
2537 		oneConnect = 1;
2538 		m = (typeof(m)){"OCe15100", "PCIe",
2539 				"Obsolete, Unsupported FCoE"};
2540 		break;
2541 	case PCI_DEVICE_ID_LANCER_G6_FC:
2542 		m = (typeof(m)){"LPe32000", "PCIe", "Fibre Channel Adapter"};
2543 		break;
2544 	case PCI_DEVICE_ID_LANCER_G7_FC:
2545 		m = (typeof(m)){"LPe36000", "PCIe", "Fibre Channel Adapter"};
2546 		break;
2547 	case PCI_DEVICE_ID_SKYHAWK:
2548 	case PCI_DEVICE_ID_SKYHAWK_VF:
2549 		oneConnect = 1;
2550 		m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
2551 		break;
2552 	default:
2553 		m = (typeof(m)){"Unknown", "", ""};
2554 		break;
2555 	}
2556 
2557 	if (mdp && mdp[0] == '\0')
2558 		snprintf(mdp, 79,"%s", m.name);
2559 	/*
2560 	 * oneConnect hba requires special processing, they are all initiators
2561 	 * and we put the port number on the end
2562 	 */
2563 	if (descp && descp[0] == '\0') {
2564 		if (oneConnect)
2565 			snprintf(descp, 255,
2566 				"Emulex OneConnect %s, %s Initiator %s",
2567 				m.name, m.function,
2568 				phba->Port);
2569 		else if (max_speed == 0)
2570 			snprintf(descp, 255,
2571 				"Emulex %s %s %s",
2572 				m.name, m.bus, m.function);
2573 		else
2574 			snprintf(descp, 255,
2575 				"Emulex %s %d%s %s %s",
2576 				m.name, max_speed, (GE) ? "GE" : "Gb",
2577 				m.bus, m.function);
2578 	}
2579 }
2580 
2581 /**
2582  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2583  * @phba: pointer to lpfc hba data structure.
2584  * @pring: pointer to a IOCB ring.
2585  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2586  *
2587  * This routine posts a given number of IOCBs with the associated DMA buffer
2588  * descriptors specified by the cnt argument to the given IOCB ring.
2589  *
2590  * Return codes
2591  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2592  **/
2593 int
2594 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2595 {
2596 	IOCB_t *icmd;
2597 	struct lpfc_iocbq *iocb;
2598 	struct lpfc_dmabuf *mp1, *mp2;
2599 
2600 	cnt += pring->missbufcnt;
2601 
2602 	/* While there are buffers to post */
2603 	while (cnt > 0) {
2604 		/* Allocate buffer for  command iocb */
2605 		iocb = lpfc_sli_get_iocbq(phba);
2606 		if (iocb == NULL) {
2607 			pring->missbufcnt = cnt;
2608 			return cnt;
2609 		}
2610 		icmd = &iocb->iocb;
2611 
2612 		/* 2 buffers can be posted per command */
2613 		/* Allocate buffer to post */
2614 		mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2615 		if (mp1)
2616 		    mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2617 		if (!mp1 || !mp1->virt) {
2618 			kfree(mp1);
2619 			lpfc_sli_release_iocbq(phba, iocb);
2620 			pring->missbufcnt = cnt;
2621 			return cnt;
2622 		}
2623 
2624 		INIT_LIST_HEAD(&mp1->list);
2625 		/* Allocate buffer to post */
2626 		if (cnt > 1) {
2627 			mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2628 			if (mp2)
2629 				mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2630 							    &mp2->phys);
2631 			if (!mp2 || !mp2->virt) {
2632 				kfree(mp2);
2633 				lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2634 				kfree(mp1);
2635 				lpfc_sli_release_iocbq(phba, iocb);
2636 				pring->missbufcnt = cnt;
2637 				return cnt;
2638 			}
2639 
2640 			INIT_LIST_HEAD(&mp2->list);
2641 		} else {
2642 			mp2 = NULL;
2643 		}
2644 
2645 		icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2646 		icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2647 		icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2648 		icmd->ulpBdeCount = 1;
2649 		cnt--;
2650 		if (mp2) {
2651 			icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2652 			icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2653 			icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2654 			cnt--;
2655 			icmd->ulpBdeCount = 2;
2656 		}
2657 
2658 		icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2659 		icmd->ulpLe = 1;
2660 
2661 		if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2662 		    IOCB_ERROR) {
2663 			lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2664 			kfree(mp1);
2665 			cnt++;
2666 			if (mp2) {
2667 				lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2668 				kfree(mp2);
2669 				cnt++;
2670 			}
2671 			lpfc_sli_release_iocbq(phba, iocb);
2672 			pring->missbufcnt = cnt;
2673 			return cnt;
2674 		}
2675 		lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2676 		if (mp2)
2677 			lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2678 	}
2679 	pring->missbufcnt = 0;
2680 	return 0;
2681 }
2682 
2683 /**
2684  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2685  * @phba: pointer to lpfc hba data structure.
2686  *
2687  * This routine posts initial receive IOCB buffers to the ELS ring. The
2688  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2689  * set to 64 IOCBs. SLI3 only.
2690  *
2691  * Return codes
2692  *   0 - success (currently always success)
2693  **/
2694 static int
2695 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2696 {
2697 	struct lpfc_sli *psli = &phba->sli;
2698 
2699 	/* Ring 0, ELS / CT buffers */
2700 	lpfc_post_buffer(phba, &psli->sli3_ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2701 	/* Ring 2 - FCP no buffers needed */
2702 
2703 	return 0;
2704 }
2705 
2706 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2707 
2708 /**
2709  * lpfc_sha_init - Set up initial array of hash table entries
2710  * @HashResultPointer: pointer to an array as hash table.
2711  *
2712  * This routine sets up the initial values to the array of hash table entries
2713  * for the LC HBAs.
2714  **/
2715 static void
2716 lpfc_sha_init(uint32_t * HashResultPointer)
2717 {
2718 	HashResultPointer[0] = 0x67452301;
2719 	HashResultPointer[1] = 0xEFCDAB89;
2720 	HashResultPointer[2] = 0x98BADCFE;
2721 	HashResultPointer[3] = 0x10325476;
2722 	HashResultPointer[4] = 0xC3D2E1F0;
2723 }
2724 
2725 /**
2726  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2727  * @HashResultPointer: pointer to an initial/result hash table.
2728  * @HashWorkingPointer: pointer to an working hash table.
2729  *
2730  * This routine iterates an initial hash table pointed by @HashResultPointer
2731  * with the values from the working hash table pointeed by @HashWorkingPointer.
2732  * The results are putting back to the initial hash table, returned through
2733  * the @HashResultPointer as the result hash table.
2734  **/
2735 static void
2736 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2737 {
2738 	int t;
2739 	uint32_t TEMP;
2740 	uint32_t A, B, C, D, E;
2741 	t = 16;
2742 	do {
2743 		HashWorkingPointer[t] =
2744 		    S(1,
2745 		      HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2746 								     8] ^
2747 		      HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2748 	} while (++t <= 79);
2749 	t = 0;
2750 	A = HashResultPointer[0];
2751 	B = HashResultPointer[1];
2752 	C = HashResultPointer[2];
2753 	D = HashResultPointer[3];
2754 	E = HashResultPointer[4];
2755 
2756 	do {
2757 		if (t < 20) {
2758 			TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2759 		} else if (t < 40) {
2760 			TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2761 		} else if (t < 60) {
2762 			TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2763 		} else {
2764 			TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2765 		}
2766 		TEMP += S(5, A) + E + HashWorkingPointer[t];
2767 		E = D;
2768 		D = C;
2769 		C = S(30, B);
2770 		B = A;
2771 		A = TEMP;
2772 	} while (++t <= 79);
2773 
2774 	HashResultPointer[0] += A;
2775 	HashResultPointer[1] += B;
2776 	HashResultPointer[2] += C;
2777 	HashResultPointer[3] += D;
2778 	HashResultPointer[4] += E;
2779 
2780 }
2781 
2782 /**
2783  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2784  * @RandomChallenge: pointer to the entry of host challenge random number array.
2785  * @HashWorking: pointer to the entry of the working hash array.
2786  *
2787  * This routine calculates the working hash array referred by @HashWorking
2788  * from the challenge random numbers associated with the host, referred by
2789  * @RandomChallenge. The result is put into the entry of the working hash
2790  * array and returned by reference through @HashWorking.
2791  **/
2792 static void
2793 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2794 {
2795 	*HashWorking = (*RandomChallenge ^ *HashWorking);
2796 }
2797 
2798 /**
2799  * lpfc_hba_init - Perform special handling for LC HBA initialization
2800  * @phba: pointer to lpfc hba data structure.
2801  * @hbainit: pointer to an array of unsigned 32-bit integers.
2802  *
2803  * This routine performs the special handling for LC HBA initialization.
2804  **/
2805 void
2806 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2807 {
2808 	int t;
2809 	uint32_t *HashWorking;
2810 	uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2811 
2812 	HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2813 	if (!HashWorking)
2814 		return;
2815 
2816 	HashWorking[0] = HashWorking[78] = *pwwnn++;
2817 	HashWorking[1] = HashWorking[79] = *pwwnn;
2818 
2819 	for (t = 0; t < 7; t++)
2820 		lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2821 
2822 	lpfc_sha_init(hbainit);
2823 	lpfc_sha_iterate(hbainit, HashWorking);
2824 	kfree(HashWorking);
2825 }
2826 
2827 /**
2828  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2829  * @vport: pointer to a virtual N_Port data structure.
2830  *
2831  * This routine performs the necessary cleanups before deleting the @vport.
2832  * It invokes the discovery state machine to perform necessary state
2833  * transitions and to release the ndlps associated with the @vport. Note,
2834  * the physical port is treated as @vport 0.
2835  **/
2836 void
2837 lpfc_cleanup(struct lpfc_vport *vport)
2838 {
2839 	struct lpfc_hba   *phba = vport->phba;
2840 	struct lpfc_nodelist *ndlp, *next_ndlp;
2841 	int i = 0;
2842 
2843 	if (phba->link_state > LPFC_LINK_DOWN)
2844 		lpfc_port_link_failure(vport);
2845 
2846 	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2847 		if (!NLP_CHK_NODE_ACT(ndlp)) {
2848 			ndlp = lpfc_enable_node(vport, ndlp,
2849 						NLP_STE_UNUSED_NODE);
2850 			if (!ndlp)
2851 				continue;
2852 			spin_lock_irq(&phba->ndlp_lock);
2853 			NLP_SET_FREE_REQ(ndlp);
2854 			spin_unlock_irq(&phba->ndlp_lock);
2855 			/* Trigger the release of the ndlp memory */
2856 			lpfc_nlp_put(ndlp);
2857 			continue;
2858 		}
2859 		spin_lock_irq(&phba->ndlp_lock);
2860 		if (NLP_CHK_FREE_REQ(ndlp)) {
2861 			/* The ndlp should not be in memory free mode already */
2862 			spin_unlock_irq(&phba->ndlp_lock);
2863 			continue;
2864 		} else
2865 			/* Indicate request for freeing ndlp memory */
2866 			NLP_SET_FREE_REQ(ndlp);
2867 		spin_unlock_irq(&phba->ndlp_lock);
2868 
2869 		if (vport->port_type != LPFC_PHYSICAL_PORT &&
2870 		    ndlp->nlp_DID == Fabric_DID) {
2871 			/* Just free up ndlp with Fabric_DID for vports */
2872 			lpfc_nlp_put(ndlp);
2873 			continue;
2874 		}
2875 
2876 		/* take care of nodes in unused state before the state
2877 		 * machine taking action.
2878 		 */
2879 		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
2880 			lpfc_nlp_put(ndlp);
2881 			continue;
2882 		}
2883 
2884 		if (ndlp->nlp_type & NLP_FABRIC)
2885 			lpfc_disc_state_machine(vport, ndlp, NULL,
2886 					NLP_EVT_DEVICE_RECOVERY);
2887 
2888 		lpfc_disc_state_machine(vport, ndlp, NULL,
2889 					     NLP_EVT_DEVICE_RM);
2890 	}
2891 
2892 	/* At this point, ALL ndlp's should be gone
2893 	 * because of the previous NLP_EVT_DEVICE_RM.
2894 	 * Lets wait for this to happen, if needed.
2895 	 */
2896 	while (!list_empty(&vport->fc_nodes)) {
2897 		if (i++ > 3000) {
2898 			lpfc_printf_vlog(vport, KERN_ERR,
2899 					 LOG_TRACE_EVENT,
2900 				"0233 Nodelist not empty\n");
2901 			list_for_each_entry_safe(ndlp, next_ndlp,
2902 						&vport->fc_nodes, nlp_listp) {
2903 				lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2904 						LOG_TRACE_EVENT,
2905 						"0282 did:x%x ndlp:x%px "
2906 						"usgmap:x%x refcnt:%d\n",
2907 						ndlp->nlp_DID, (void *)ndlp,
2908 						ndlp->nlp_usg_map,
2909 						kref_read(&ndlp->kref));
2910 			}
2911 			break;
2912 		}
2913 
2914 		/* Wait for any activity on ndlps to settle */
2915 		msleep(10);
2916 	}
2917 	lpfc_cleanup_vports_rrqs(vport, NULL);
2918 }
2919 
2920 /**
2921  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2922  * @vport: pointer to a virtual N_Port data structure.
2923  *
2924  * This routine stops all the timers associated with a @vport. This function
2925  * is invoked before disabling or deleting a @vport. Note that the physical
2926  * port is treated as @vport 0.
2927  **/
2928 void
2929 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2930 {
2931 	del_timer_sync(&vport->els_tmofunc);
2932 	del_timer_sync(&vport->delayed_disc_tmo);
2933 	lpfc_can_disctmo(vport);
2934 	return;
2935 }
2936 
2937 /**
2938  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2939  * @phba: pointer to lpfc hba data structure.
2940  *
2941  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2942  * caller of this routine should already hold the host lock.
2943  **/
2944 void
2945 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2946 {
2947 	/* Clear pending FCF rediscovery wait flag */
2948 	phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2949 
2950 	/* Now, try to stop the timer */
2951 	del_timer(&phba->fcf.redisc_wait);
2952 }
2953 
2954 /**
2955  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2956  * @phba: pointer to lpfc hba data structure.
2957  *
2958  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2959  * checks whether the FCF rediscovery wait timer is pending with the host
2960  * lock held before proceeding with disabling the timer and clearing the
2961  * wait timer pendig flag.
2962  **/
2963 void
2964 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2965 {
2966 	spin_lock_irq(&phba->hbalock);
2967 	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2968 		/* FCF rediscovery timer already fired or stopped */
2969 		spin_unlock_irq(&phba->hbalock);
2970 		return;
2971 	}
2972 	__lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2973 	/* Clear failover in progress flags */
2974 	phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
2975 	spin_unlock_irq(&phba->hbalock);
2976 }
2977 
2978 /**
2979  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2980  * @phba: pointer to lpfc hba data structure.
2981  *
2982  * This routine stops all the timers associated with a HBA. This function is
2983  * invoked before either putting a HBA offline or unloading the driver.
2984  **/
2985 void
2986 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2987 {
2988 	if (phba->pport)
2989 		lpfc_stop_vport_timers(phba->pport);
2990 	cancel_delayed_work_sync(&phba->eq_delay_work);
2991 	cancel_delayed_work_sync(&phba->idle_stat_delay_work);
2992 	del_timer_sync(&phba->sli.mbox_tmo);
2993 	del_timer_sync(&phba->fabric_block_timer);
2994 	del_timer_sync(&phba->eratt_poll);
2995 	del_timer_sync(&phba->hb_tmofunc);
2996 	if (phba->sli_rev == LPFC_SLI_REV4) {
2997 		del_timer_sync(&phba->rrq_tmr);
2998 		phba->hba_flag &= ~HBA_RRQ_ACTIVE;
2999 	}
3000 	phba->hb_outstanding = 0;
3001 
3002 	switch (phba->pci_dev_grp) {
3003 	case LPFC_PCI_DEV_LP:
3004 		/* Stop any LightPulse device specific driver timers */
3005 		del_timer_sync(&phba->fcp_poll_timer);
3006 		break;
3007 	case LPFC_PCI_DEV_OC:
3008 		/* Stop any OneConnect device specific driver timers */
3009 		lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
3010 		break;
3011 	default:
3012 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3013 				"0297 Invalid device group (x%x)\n",
3014 				phba->pci_dev_grp);
3015 		break;
3016 	}
3017 	return;
3018 }
3019 
3020 /**
3021  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
3022  * @phba: pointer to lpfc hba data structure.
3023  * @mbx_action: flag for mailbox no wait action.
3024  *
3025  * This routine marks a HBA's management interface as blocked. Once the HBA's
3026  * management interface is marked as blocked, all the user space access to
3027  * the HBA, whether they are from sysfs interface or libdfc interface will
3028  * all be blocked. The HBA is set to block the management interface when the
3029  * driver prepares the HBA interface for online or offline.
3030  **/
3031 static void
3032 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
3033 {
3034 	unsigned long iflag;
3035 	uint8_t actcmd = MBX_HEARTBEAT;
3036 	unsigned long timeout;
3037 
3038 	spin_lock_irqsave(&phba->hbalock, iflag);
3039 	phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
3040 	spin_unlock_irqrestore(&phba->hbalock, iflag);
3041 	if (mbx_action == LPFC_MBX_NO_WAIT)
3042 		return;
3043 	timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
3044 	spin_lock_irqsave(&phba->hbalock, iflag);
3045 	if (phba->sli.mbox_active) {
3046 		actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
3047 		/* Determine how long we might wait for the active mailbox
3048 		 * command to be gracefully completed by firmware.
3049 		 */
3050 		timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
3051 				phba->sli.mbox_active) * 1000) + jiffies;
3052 	}
3053 	spin_unlock_irqrestore(&phba->hbalock, iflag);
3054 
3055 	/* Wait for the outstnading mailbox command to complete */
3056 	while (phba->sli.mbox_active) {
3057 		/* Check active mailbox complete status every 2ms */
3058 		msleep(2);
3059 		if (time_after(jiffies, timeout)) {
3060 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3061 					"2813 Mgmt IO is Blocked %x "
3062 					"- mbox cmd %x still active\n",
3063 					phba->sli.sli_flag, actcmd);
3064 			break;
3065 		}
3066 	}
3067 }
3068 
3069 /**
3070  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
3071  * @phba: pointer to lpfc hba data structure.
3072  *
3073  * Allocate RPIs for all active remote nodes. This is needed whenever
3074  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
3075  * is to fixup the temporary rpi assignments.
3076  **/
3077 void
3078 lpfc_sli4_node_prep(struct lpfc_hba *phba)
3079 {
3080 	struct lpfc_nodelist  *ndlp, *next_ndlp;
3081 	struct lpfc_vport **vports;
3082 	int i, rpi;
3083 	unsigned long flags;
3084 
3085 	if (phba->sli_rev != LPFC_SLI_REV4)
3086 		return;
3087 
3088 	vports = lpfc_create_vport_work_array(phba);
3089 	if (vports == NULL)
3090 		return;
3091 
3092 	for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3093 		if (vports[i]->load_flag & FC_UNLOADING)
3094 			continue;
3095 
3096 		list_for_each_entry_safe(ndlp, next_ndlp,
3097 					 &vports[i]->fc_nodes,
3098 					 nlp_listp) {
3099 			if (!NLP_CHK_NODE_ACT(ndlp))
3100 				continue;
3101 			rpi = lpfc_sli4_alloc_rpi(phba);
3102 			if (rpi == LPFC_RPI_ALLOC_ERROR) {
3103 				spin_lock_irqsave(&phba->ndlp_lock, flags);
3104 				NLP_CLR_NODE_ACT(ndlp);
3105 				spin_unlock_irqrestore(&phba->ndlp_lock, flags);
3106 				continue;
3107 			}
3108 			ndlp->nlp_rpi = rpi;
3109 			lpfc_printf_vlog(ndlp->vport, KERN_INFO,
3110 					 LOG_NODE | LOG_DISCOVERY,
3111 					 "0009 Assign RPI x%x to ndlp x%px "
3112 					 "DID:x%06x flg:x%x map:x%x\n",
3113 					 ndlp->nlp_rpi, ndlp, ndlp->nlp_DID,
3114 					 ndlp->nlp_flag, ndlp->nlp_usg_map);
3115 		}
3116 	}
3117 	lpfc_destroy_vport_work_array(phba, vports);
3118 }
3119 
3120 /**
3121  * lpfc_create_expedite_pool - create expedite pool
3122  * @phba: pointer to lpfc hba data structure.
3123  *
3124  * This routine moves a batch of XRIs from lpfc_io_buf_list_put of HWQ 0
3125  * to expedite pool. Mark them as expedite.
3126  **/
3127 static void lpfc_create_expedite_pool(struct lpfc_hba *phba)
3128 {
3129 	struct lpfc_sli4_hdw_queue *qp;
3130 	struct lpfc_io_buf *lpfc_ncmd;
3131 	struct lpfc_io_buf *lpfc_ncmd_next;
3132 	struct lpfc_epd_pool *epd_pool;
3133 	unsigned long iflag;
3134 
3135 	epd_pool = &phba->epd_pool;
3136 	qp = &phba->sli4_hba.hdwq[0];
3137 
3138 	spin_lock_init(&epd_pool->lock);
3139 	spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3140 	spin_lock(&epd_pool->lock);
3141 	INIT_LIST_HEAD(&epd_pool->list);
3142 	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3143 				 &qp->lpfc_io_buf_list_put, list) {
3144 		list_move_tail(&lpfc_ncmd->list, &epd_pool->list);
3145 		lpfc_ncmd->expedite = true;
3146 		qp->put_io_bufs--;
3147 		epd_pool->count++;
3148 		if (epd_pool->count >= XRI_BATCH)
3149 			break;
3150 	}
3151 	spin_unlock(&epd_pool->lock);
3152 	spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3153 }
3154 
3155 /**
3156  * lpfc_destroy_expedite_pool - destroy expedite pool
3157  * @phba: pointer to lpfc hba data structure.
3158  *
3159  * This routine returns XRIs from expedite pool to lpfc_io_buf_list_put
3160  * of HWQ 0. Clear the mark.
3161  **/
3162 static void lpfc_destroy_expedite_pool(struct lpfc_hba *phba)
3163 {
3164 	struct lpfc_sli4_hdw_queue *qp;
3165 	struct lpfc_io_buf *lpfc_ncmd;
3166 	struct lpfc_io_buf *lpfc_ncmd_next;
3167 	struct lpfc_epd_pool *epd_pool;
3168 	unsigned long iflag;
3169 
3170 	epd_pool = &phba->epd_pool;
3171 	qp = &phba->sli4_hba.hdwq[0];
3172 
3173 	spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3174 	spin_lock(&epd_pool->lock);
3175 	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3176 				 &epd_pool->list, list) {
3177 		list_move_tail(&lpfc_ncmd->list,
3178 			       &qp->lpfc_io_buf_list_put);
3179 		lpfc_ncmd->flags = false;
3180 		qp->put_io_bufs++;
3181 		epd_pool->count--;
3182 	}
3183 	spin_unlock(&epd_pool->lock);
3184 	spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3185 }
3186 
3187 /**
3188  * lpfc_create_multixri_pools - create multi-XRI pools
3189  * @phba: pointer to lpfc hba data structure.
3190  *
3191  * This routine initialize public, private per HWQ. Then, move XRIs from
3192  * lpfc_io_buf_list_put to public pool. High and low watermark are also
3193  * Initialized.
3194  **/
3195 void lpfc_create_multixri_pools(struct lpfc_hba *phba)
3196 {
3197 	u32 i, j;
3198 	u32 hwq_count;
3199 	u32 count_per_hwq;
3200 	struct lpfc_io_buf *lpfc_ncmd;
3201 	struct lpfc_io_buf *lpfc_ncmd_next;
3202 	unsigned long iflag;
3203 	struct lpfc_sli4_hdw_queue *qp;
3204 	struct lpfc_multixri_pool *multixri_pool;
3205 	struct lpfc_pbl_pool *pbl_pool;
3206 	struct lpfc_pvt_pool *pvt_pool;
3207 
3208 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3209 			"1234 num_hdw_queue=%d num_present_cpu=%d common_xri_cnt=%d\n",
3210 			phba->cfg_hdw_queue, phba->sli4_hba.num_present_cpu,
3211 			phba->sli4_hba.io_xri_cnt);
3212 
3213 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3214 		lpfc_create_expedite_pool(phba);
3215 
3216 	hwq_count = phba->cfg_hdw_queue;
3217 	count_per_hwq = phba->sli4_hba.io_xri_cnt / hwq_count;
3218 
3219 	for (i = 0; i < hwq_count; i++) {
3220 		multixri_pool = kzalloc(sizeof(*multixri_pool), GFP_KERNEL);
3221 
3222 		if (!multixri_pool) {
3223 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3224 					"1238 Failed to allocate memory for "
3225 					"multixri_pool\n");
3226 
3227 			if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3228 				lpfc_destroy_expedite_pool(phba);
3229 
3230 			j = 0;
3231 			while (j < i) {
3232 				qp = &phba->sli4_hba.hdwq[j];
3233 				kfree(qp->p_multixri_pool);
3234 				j++;
3235 			}
3236 			phba->cfg_xri_rebalancing = 0;
3237 			return;
3238 		}
3239 
3240 		qp = &phba->sli4_hba.hdwq[i];
3241 		qp->p_multixri_pool = multixri_pool;
3242 
3243 		multixri_pool->xri_limit = count_per_hwq;
3244 		multixri_pool->rrb_next_hwqid = i;
3245 
3246 		/* Deal with public free xri pool */
3247 		pbl_pool = &multixri_pool->pbl_pool;
3248 		spin_lock_init(&pbl_pool->lock);
3249 		spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3250 		spin_lock(&pbl_pool->lock);
3251 		INIT_LIST_HEAD(&pbl_pool->list);
3252 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3253 					 &qp->lpfc_io_buf_list_put, list) {
3254 			list_move_tail(&lpfc_ncmd->list, &pbl_pool->list);
3255 			qp->put_io_bufs--;
3256 			pbl_pool->count++;
3257 		}
3258 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3259 				"1235 Moved %d buffers from PUT list over to pbl_pool[%d]\n",
3260 				pbl_pool->count, i);
3261 		spin_unlock(&pbl_pool->lock);
3262 		spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3263 
3264 		/* Deal with private free xri pool */
3265 		pvt_pool = &multixri_pool->pvt_pool;
3266 		pvt_pool->high_watermark = multixri_pool->xri_limit / 2;
3267 		pvt_pool->low_watermark = XRI_BATCH;
3268 		spin_lock_init(&pvt_pool->lock);
3269 		spin_lock_irqsave(&pvt_pool->lock, iflag);
3270 		INIT_LIST_HEAD(&pvt_pool->list);
3271 		pvt_pool->count = 0;
3272 		spin_unlock_irqrestore(&pvt_pool->lock, iflag);
3273 	}
3274 }
3275 
3276 /**
3277  * lpfc_destroy_multixri_pools - destroy multi-XRI pools
3278  * @phba: pointer to lpfc hba data structure.
3279  *
3280  * This routine returns XRIs from public/private to lpfc_io_buf_list_put.
3281  **/
3282 static void lpfc_destroy_multixri_pools(struct lpfc_hba *phba)
3283 {
3284 	u32 i;
3285 	u32 hwq_count;
3286 	struct lpfc_io_buf *lpfc_ncmd;
3287 	struct lpfc_io_buf *lpfc_ncmd_next;
3288 	unsigned long iflag;
3289 	struct lpfc_sli4_hdw_queue *qp;
3290 	struct lpfc_multixri_pool *multixri_pool;
3291 	struct lpfc_pbl_pool *pbl_pool;
3292 	struct lpfc_pvt_pool *pvt_pool;
3293 
3294 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
3295 		lpfc_destroy_expedite_pool(phba);
3296 
3297 	if (!(phba->pport->load_flag & FC_UNLOADING))
3298 		lpfc_sli_flush_io_rings(phba);
3299 
3300 	hwq_count = phba->cfg_hdw_queue;
3301 
3302 	for (i = 0; i < hwq_count; i++) {
3303 		qp = &phba->sli4_hba.hdwq[i];
3304 		multixri_pool = qp->p_multixri_pool;
3305 		if (!multixri_pool)
3306 			continue;
3307 
3308 		qp->p_multixri_pool = NULL;
3309 
3310 		spin_lock_irqsave(&qp->io_buf_list_put_lock, iflag);
3311 
3312 		/* Deal with public free xri pool */
3313 		pbl_pool = &multixri_pool->pbl_pool;
3314 		spin_lock(&pbl_pool->lock);
3315 
3316 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3317 				"1236 Moving %d buffers from pbl_pool[%d] TO PUT list\n",
3318 				pbl_pool->count, i);
3319 
3320 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3321 					 &pbl_pool->list, list) {
3322 			list_move_tail(&lpfc_ncmd->list,
3323 				       &qp->lpfc_io_buf_list_put);
3324 			qp->put_io_bufs++;
3325 			pbl_pool->count--;
3326 		}
3327 
3328 		INIT_LIST_HEAD(&pbl_pool->list);
3329 		pbl_pool->count = 0;
3330 
3331 		spin_unlock(&pbl_pool->lock);
3332 
3333 		/* Deal with private free xri pool */
3334 		pvt_pool = &multixri_pool->pvt_pool;
3335 		spin_lock(&pvt_pool->lock);
3336 
3337 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3338 				"1237 Moving %d buffers from pvt_pool[%d] TO PUT list\n",
3339 				pvt_pool->count, i);
3340 
3341 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3342 					 &pvt_pool->list, list) {
3343 			list_move_tail(&lpfc_ncmd->list,
3344 				       &qp->lpfc_io_buf_list_put);
3345 			qp->put_io_bufs++;
3346 			pvt_pool->count--;
3347 		}
3348 
3349 		INIT_LIST_HEAD(&pvt_pool->list);
3350 		pvt_pool->count = 0;
3351 
3352 		spin_unlock(&pvt_pool->lock);
3353 		spin_unlock_irqrestore(&qp->io_buf_list_put_lock, iflag);
3354 
3355 		kfree(multixri_pool);
3356 	}
3357 }
3358 
3359 /**
3360  * lpfc_online - Initialize and bring a HBA online
3361  * @phba: pointer to lpfc hba data structure.
3362  *
3363  * This routine initializes the HBA and brings a HBA online. During this
3364  * process, the management interface is blocked to prevent user space access
3365  * to the HBA interfering with the driver initialization.
3366  *
3367  * Return codes
3368  *   0 - successful
3369  *   1 - failed
3370  **/
3371 int
3372 lpfc_online(struct lpfc_hba *phba)
3373 {
3374 	struct lpfc_vport *vport;
3375 	struct lpfc_vport **vports;
3376 	int i, error = 0;
3377 	bool vpis_cleared = false;
3378 
3379 	if (!phba)
3380 		return 0;
3381 	vport = phba->pport;
3382 
3383 	if (!(vport->fc_flag & FC_OFFLINE_MODE))
3384 		return 0;
3385 
3386 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3387 			"0458 Bring Adapter online\n");
3388 
3389 	lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
3390 
3391 	if (phba->sli_rev == LPFC_SLI_REV4) {
3392 		if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
3393 			lpfc_unblock_mgmt_io(phba);
3394 			return 1;
3395 		}
3396 		spin_lock_irq(&phba->hbalock);
3397 		if (!phba->sli4_hba.max_cfg_param.vpi_used)
3398 			vpis_cleared = true;
3399 		spin_unlock_irq(&phba->hbalock);
3400 
3401 		/* Reestablish the local initiator port.
3402 		 * The offline process destroyed the previous lport.
3403 		 */
3404 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
3405 				!phba->nvmet_support) {
3406 			error = lpfc_nvme_create_localport(phba->pport);
3407 			if (error)
3408 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
3409 					"6132 NVME restore reg failed "
3410 					"on nvmei error x%x\n", error);
3411 		}
3412 	} else {
3413 		lpfc_sli_queue_init(phba);
3414 		if (lpfc_sli_hba_setup(phba)) {	/* Initialize SLI2/SLI3 HBA */
3415 			lpfc_unblock_mgmt_io(phba);
3416 			return 1;
3417 		}
3418 	}
3419 
3420 	vports = lpfc_create_vport_work_array(phba);
3421 	if (vports != NULL) {
3422 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3423 			struct Scsi_Host *shost;
3424 			shost = lpfc_shost_from_vport(vports[i]);
3425 			spin_lock_irq(shost->host_lock);
3426 			vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
3427 			if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
3428 				vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3429 			if (phba->sli_rev == LPFC_SLI_REV4) {
3430 				vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
3431 				if ((vpis_cleared) &&
3432 				    (vports[i]->port_type !=
3433 					LPFC_PHYSICAL_PORT))
3434 					vports[i]->vpi = 0;
3435 			}
3436 			spin_unlock_irq(shost->host_lock);
3437 		}
3438 	}
3439 	lpfc_destroy_vport_work_array(phba, vports);
3440 
3441 	if (phba->cfg_xri_rebalancing)
3442 		lpfc_create_multixri_pools(phba);
3443 
3444 	lpfc_cpuhp_add(phba);
3445 
3446 	lpfc_unblock_mgmt_io(phba);
3447 	return 0;
3448 }
3449 
3450 /**
3451  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
3452  * @phba: pointer to lpfc hba data structure.
3453  *
3454  * This routine marks a HBA's management interface as not blocked. Once the
3455  * HBA's management interface is marked as not blocked, all the user space
3456  * access to the HBA, whether they are from sysfs interface or libdfc
3457  * interface will be allowed. The HBA is set to block the management interface
3458  * when the driver prepares the HBA interface for online or offline and then
3459  * set to unblock the management interface afterwards.
3460  **/
3461 void
3462 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
3463 {
3464 	unsigned long iflag;
3465 
3466 	spin_lock_irqsave(&phba->hbalock, iflag);
3467 	phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
3468 	spin_unlock_irqrestore(&phba->hbalock, iflag);
3469 }
3470 
3471 /**
3472  * lpfc_offline_prep - Prepare a HBA to be brought offline
3473  * @phba: pointer to lpfc hba data structure.
3474  * @mbx_action: flag for mailbox shutdown action.
3475  *
3476  * This routine is invoked to prepare a HBA to be brought offline. It performs
3477  * unregistration login to all the nodes on all vports and flushes the mailbox
3478  * queue to make it ready to be brought offline.
3479  **/
3480 void
3481 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
3482 {
3483 	struct lpfc_vport *vport = phba->pport;
3484 	struct lpfc_nodelist  *ndlp, *next_ndlp;
3485 	struct lpfc_vport **vports;
3486 	struct Scsi_Host *shost;
3487 	int i;
3488 
3489 	if (vport->fc_flag & FC_OFFLINE_MODE)
3490 		return;
3491 
3492 	lpfc_block_mgmt_io(phba, mbx_action);
3493 
3494 	lpfc_linkdown(phba);
3495 
3496 	/* Issue an unreg_login to all nodes on all vports */
3497 	vports = lpfc_create_vport_work_array(phba);
3498 	if (vports != NULL) {
3499 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3500 			if (vports[i]->load_flag & FC_UNLOADING)
3501 				continue;
3502 			shost = lpfc_shost_from_vport(vports[i]);
3503 			spin_lock_irq(shost->host_lock);
3504 			vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
3505 			vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3506 			vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
3507 			spin_unlock_irq(shost->host_lock);
3508 
3509 			shost =	lpfc_shost_from_vport(vports[i]);
3510 			list_for_each_entry_safe(ndlp, next_ndlp,
3511 						 &vports[i]->fc_nodes,
3512 						 nlp_listp) {
3513 				if ((!NLP_CHK_NODE_ACT(ndlp)) ||
3514 				    ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
3515 					/* Driver must assume RPI is invalid for
3516 					 * any unused or inactive node.
3517 					 */
3518 					ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
3519 					continue;
3520 				}
3521 
3522 				if (ndlp->nlp_type & NLP_FABRIC) {
3523 					lpfc_disc_state_machine(vports[i], ndlp,
3524 						NULL, NLP_EVT_DEVICE_RECOVERY);
3525 					lpfc_disc_state_machine(vports[i], ndlp,
3526 						NULL, NLP_EVT_DEVICE_RM);
3527 				}
3528 				spin_lock_irq(shost->host_lock);
3529 				ndlp->nlp_flag &= ~NLP_NPR_ADISC;
3530 				spin_unlock_irq(shost->host_lock);
3531 				/*
3532 				 * Whenever an SLI4 port goes offline, free the
3533 				 * RPI. Get a new RPI when the adapter port
3534 				 * comes back online.
3535 				 */
3536 				if (phba->sli_rev == LPFC_SLI_REV4) {
3537 					lpfc_printf_vlog(ndlp->vport, KERN_INFO,
3538 						 LOG_NODE | LOG_DISCOVERY,
3539 						 "0011 Free RPI x%x on "
3540 						 "ndlp:x%px did x%x "
3541 						 "usgmap:x%x\n",
3542 						 ndlp->nlp_rpi, ndlp,
3543 						 ndlp->nlp_DID,
3544 						 ndlp->nlp_usg_map);
3545 					lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
3546 					ndlp->nlp_rpi = LPFC_RPI_ALLOC_ERROR;
3547 				}
3548 				lpfc_unreg_rpi(vports[i], ndlp);
3549 			}
3550 		}
3551 	}
3552 	lpfc_destroy_vport_work_array(phba, vports);
3553 
3554 	lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
3555 
3556 	if (phba->wq)
3557 		flush_workqueue(phba->wq);
3558 }
3559 
3560 /**
3561  * lpfc_offline - Bring a HBA offline
3562  * @phba: pointer to lpfc hba data structure.
3563  *
3564  * This routine actually brings a HBA offline. It stops all the timers
3565  * associated with the HBA, brings down the SLI layer, and eventually
3566  * marks the HBA as in offline state for the upper layer protocol.
3567  **/
3568 void
3569 lpfc_offline(struct lpfc_hba *phba)
3570 {
3571 	struct Scsi_Host  *shost;
3572 	struct lpfc_vport **vports;
3573 	int i;
3574 
3575 	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
3576 		return;
3577 
3578 	/* stop port and all timers associated with this hba */
3579 	lpfc_stop_port(phba);
3580 
3581 	/* Tear down the local and target port registrations.  The
3582 	 * nvme transports need to cleanup.
3583 	 */
3584 	lpfc_nvmet_destroy_targetport(phba);
3585 	lpfc_nvme_destroy_localport(phba->pport);
3586 
3587 	vports = lpfc_create_vport_work_array(phba);
3588 	if (vports != NULL)
3589 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3590 			lpfc_stop_vport_timers(vports[i]);
3591 	lpfc_destroy_vport_work_array(phba, vports);
3592 	lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
3593 			"0460 Bring Adapter offline\n");
3594 	/* Bring down the SLI Layer and cleanup.  The HBA is offline
3595 	   now.  */
3596 	lpfc_sli_hba_down(phba);
3597 	spin_lock_irq(&phba->hbalock);
3598 	phba->work_ha = 0;
3599 	spin_unlock_irq(&phba->hbalock);
3600 	vports = lpfc_create_vport_work_array(phba);
3601 	if (vports != NULL)
3602 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3603 			shost = lpfc_shost_from_vport(vports[i]);
3604 			spin_lock_irq(shost->host_lock);
3605 			vports[i]->work_port_events = 0;
3606 			vports[i]->fc_flag |= FC_OFFLINE_MODE;
3607 			spin_unlock_irq(shost->host_lock);
3608 		}
3609 	lpfc_destroy_vport_work_array(phba, vports);
3610 	__lpfc_cpuhp_remove(phba);
3611 
3612 	if (phba->cfg_xri_rebalancing)
3613 		lpfc_destroy_multixri_pools(phba);
3614 }
3615 
3616 /**
3617  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
3618  * @phba: pointer to lpfc hba data structure.
3619  *
3620  * This routine is to free all the SCSI buffers and IOCBs from the driver
3621  * list back to kernel. It is called from lpfc_pci_remove_one to free
3622  * the internal resources before the device is removed from the system.
3623  **/
3624 static void
3625 lpfc_scsi_free(struct lpfc_hba *phba)
3626 {
3627 	struct lpfc_io_buf *sb, *sb_next;
3628 
3629 	if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
3630 		return;
3631 
3632 	spin_lock_irq(&phba->hbalock);
3633 
3634 	/* Release all the lpfc_scsi_bufs maintained by this host. */
3635 
3636 	spin_lock(&phba->scsi_buf_list_put_lock);
3637 	list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_put,
3638 				 list) {
3639 		list_del(&sb->list);
3640 		dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3641 			      sb->dma_handle);
3642 		kfree(sb);
3643 		phba->total_scsi_bufs--;
3644 	}
3645 	spin_unlock(&phba->scsi_buf_list_put_lock);
3646 
3647 	spin_lock(&phba->scsi_buf_list_get_lock);
3648 	list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list_get,
3649 				 list) {
3650 		list_del(&sb->list);
3651 		dma_pool_free(phba->lpfc_sg_dma_buf_pool, sb->data,
3652 			      sb->dma_handle);
3653 		kfree(sb);
3654 		phba->total_scsi_bufs--;
3655 	}
3656 	spin_unlock(&phba->scsi_buf_list_get_lock);
3657 	spin_unlock_irq(&phba->hbalock);
3658 }
3659 
3660 /**
3661  * lpfc_io_free - Free all the IO buffers and IOCBs from driver lists
3662  * @phba: pointer to lpfc hba data structure.
3663  *
3664  * This routine is to free all the IO buffers and IOCBs from the driver
3665  * list back to kernel. It is called from lpfc_pci_remove_one to free
3666  * the internal resources before the device is removed from the system.
3667  **/
3668 void
3669 lpfc_io_free(struct lpfc_hba *phba)
3670 {
3671 	struct lpfc_io_buf *lpfc_ncmd, *lpfc_ncmd_next;
3672 	struct lpfc_sli4_hdw_queue *qp;
3673 	int idx;
3674 
3675 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3676 		qp = &phba->sli4_hba.hdwq[idx];
3677 		/* Release all the lpfc_nvme_bufs maintained by this host. */
3678 		spin_lock(&qp->io_buf_list_put_lock);
3679 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3680 					 &qp->lpfc_io_buf_list_put,
3681 					 list) {
3682 			list_del(&lpfc_ncmd->list);
3683 			qp->put_io_bufs--;
3684 			dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3685 				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3686 			if (phba->cfg_xpsgl && !phba->nvmet_support)
3687 				lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3688 			lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3689 			kfree(lpfc_ncmd);
3690 			qp->total_io_bufs--;
3691 		}
3692 		spin_unlock(&qp->io_buf_list_put_lock);
3693 
3694 		spin_lock(&qp->io_buf_list_get_lock);
3695 		list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
3696 					 &qp->lpfc_io_buf_list_get,
3697 					 list) {
3698 			list_del(&lpfc_ncmd->list);
3699 			qp->get_io_bufs--;
3700 			dma_pool_free(phba->lpfc_sg_dma_buf_pool,
3701 				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);
3702 			if (phba->cfg_xpsgl && !phba->nvmet_support)
3703 				lpfc_put_sgl_per_hdwq(phba, lpfc_ncmd);
3704 			lpfc_put_cmd_rsp_buf_per_hdwq(phba, lpfc_ncmd);
3705 			kfree(lpfc_ncmd);
3706 			qp->total_io_bufs--;
3707 		}
3708 		spin_unlock(&qp->io_buf_list_get_lock);
3709 	}
3710 }
3711 
3712 /**
3713  * lpfc_sli4_els_sgl_update - update ELS xri-sgl sizing and mapping
3714  * @phba: pointer to lpfc hba data structure.
3715  *
3716  * This routine first calculates the sizes of the current els and allocated
3717  * scsi sgl lists, and then goes through all sgls to updates the physical
3718  * XRIs assigned due to port function reset. During port initialization, the
3719  * current els and allocated scsi sgl lists are 0s.
3720  *
3721  * Return codes
3722  *   0 - successful (for now, it always returns 0)
3723  **/
3724 int
3725 lpfc_sli4_els_sgl_update(struct lpfc_hba *phba)
3726 {
3727 	struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3728 	uint16_t i, lxri, xri_cnt, els_xri_cnt;
3729 	LIST_HEAD(els_sgl_list);
3730 	int rc;
3731 
3732 	/*
3733 	 * update on pci function's els xri-sgl list
3734 	 */
3735 	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3736 
3737 	if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
3738 		/* els xri-sgl expanded */
3739 		xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
3740 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3741 				"3157 ELS xri-sgl count increased from "
3742 				"%d to %d\n", phba->sli4_hba.els_xri_cnt,
3743 				els_xri_cnt);
3744 		/* allocate the additional els sgls */
3745 		for (i = 0; i < xri_cnt; i++) {
3746 			sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3747 					     GFP_KERNEL);
3748 			if (sglq_entry == NULL) {
3749 				lpfc_printf_log(phba, KERN_ERR,
3750 						LOG_TRACE_EVENT,
3751 						"2562 Failure to allocate an "
3752 						"ELS sgl entry:%d\n", i);
3753 				rc = -ENOMEM;
3754 				goto out_free_mem;
3755 			}
3756 			sglq_entry->buff_type = GEN_BUFF_TYPE;
3757 			sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
3758 							   &sglq_entry->phys);
3759 			if (sglq_entry->virt == NULL) {
3760 				kfree(sglq_entry);
3761 				lpfc_printf_log(phba, KERN_ERR,
3762 						LOG_TRACE_EVENT,
3763 						"2563 Failure to allocate an "
3764 						"ELS mbuf:%d\n", i);
3765 				rc = -ENOMEM;
3766 				goto out_free_mem;
3767 			}
3768 			sglq_entry->sgl = sglq_entry->virt;
3769 			memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
3770 			sglq_entry->state = SGL_FREED;
3771 			list_add_tail(&sglq_entry->list, &els_sgl_list);
3772 		}
3773 		spin_lock_irq(&phba->hbalock);
3774 		spin_lock(&phba->sli4_hba.sgl_list_lock);
3775 		list_splice_init(&els_sgl_list,
3776 				 &phba->sli4_hba.lpfc_els_sgl_list);
3777 		spin_unlock(&phba->sli4_hba.sgl_list_lock);
3778 		spin_unlock_irq(&phba->hbalock);
3779 	} else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
3780 		/* els xri-sgl shrinked */
3781 		xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
3782 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3783 				"3158 ELS xri-sgl count decreased from "
3784 				"%d to %d\n", phba->sli4_hba.els_xri_cnt,
3785 				els_xri_cnt);
3786 		spin_lock_irq(&phba->hbalock);
3787 		spin_lock(&phba->sli4_hba.sgl_list_lock);
3788 		list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list,
3789 				 &els_sgl_list);
3790 		/* release extra els sgls from list */
3791 		for (i = 0; i < xri_cnt; i++) {
3792 			list_remove_head(&els_sgl_list,
3793 					 sglq_entry, struct lpfc_sglq, list);
3794 			if (sglq_entry) {
3795 				__lpfc_mbuf_free(phba, sglq_entry->virt,
3796 						 sglq_entry->phys);
3797 				kfree(sglq_entry);
3798 			}
3799 		}
3800 		list_splice_init(&els_sgl_list,
3801 				 &phba->sli4_hba.lpfc_els_sgl_list);
3802 		spin_unlock(&phba->sli4_hba.sgl_list_lock);
3803 		spin_unlock_irq(&phba->hbalock);
3804 	} else
3805 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3806 				"3163 ELS xri-sgl count unchanged: %d\n",
3807 				els_xri_cnt);
3808 	phba->sli4_hba.els_xri_cnt = els_xri_cnt;
3809 
3810 	/* update xris to els sgls on the list */
3811 	sglq_entry = NULL;
3812 	sglq_entry_next = NULL;
3813 	list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3814 				 &phba->sli4_hba.lpfc_els_sgl_list, list) {
3815 		lxri = lpfc_sli4_next_xritag(phba);
3816 		if (lxri == NO_XRI) {
3817 			lpfc_printf_log(phba, KERN_ERR,
3818 					LOG_TRACE_EVENT,
3819 					"2400 Failed to allocate xri for "
3820 					"ELS sgl\n");
3821 			rc = -ENOMEM;
3822 			goto out_free_mem;
3823 		}
3824 		sglq_entry->sli4_lxritag = lxri;
3825 		sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3826 	}
3827 	return 0;
3828 
3829 out_free_mem:
3830 	lpfc_free_els_sgl_list(phba);
3831 	return rc;
3832 }
3833 
3834 /**
3835  * lpfc_sli4_nvmet_sgl_update - update xri-sgl sizing and mapping
3836  * @phba: pointer to lpfc hba data structure.
3837  *
3838  * This routine first calculates the sizes of the current els and allocated
3839  * scsi sgl lists, and then goes through all sgls to updates the physical
3840  * XRIs assigned due to port function reset. During port initialization, the
3841  * current els and allocated scsi sgl lists are 0s.
3842  *
3843  * Return codes
3844  *   0 - successful (for now, it always returns 0)
3845  **/
3846 int
3847 lpfc_sli4_nvmet_sgl_update(struct lpfc_hba *phba)
3848 {
3849 	struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
3850 	uint16_t i, lxri, xri_cnt, els_xri_cnt;
3851 	uint16_t nvmet_xri_cnt;
3852 	LIST_HEAD(nvmet_sgl_list);
3853 	int rc;
3854 
3855 	/*
3856 	 * update on pci function's nvmet xri-sgl list
3857 	 */
3858 	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
3859 
3860 	/* For NVMET, ALL remaining XRIs are dedicated for IO processing */
3861 	nvmet_xri_cnt = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
3862 	if (nvmet_xri_cnt > phba->sli4_hba.nvmet_xri_cnt) {
3863 		/* els xri-sgl expanded */
3864 		xri_cnt = nvmet_xri_cnt - phba->sli4_hba.nvmet_xri_cnt;
3865 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3866 				"6302 NVMET xri-sgl cnt grew from %d to %d\n",
3867 				phba->sli4_hba.nvmet_xri_cnt, nvmet_xri_cnt);
3868 		/* allocate the additional nvmet sgls */
3869 		for (i = 0; i < xri_cnt; i++) {
3870 			sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
3871 					     GFP_KERNEL);
3872 			if (sglq_entry == NULL) {
3873 				lpfc_printf_log(phba, KERN_ERR,
3874 						LOG_TRACE_EVENT,
3875 						"6303 Failure to allocate an "
3876 						"NVMET sgl entry:%d\n", i);
3877 				rc = -ENOMEM;
3878 				goto out_free_mem;
3879 			}
3880 			sglq_entry->buff_type = NVMET_BUFF_TYPE;
3881 			sglq_entry->virt = lpfc_nvmet_buf_alloc(phba, 0,
3882 							   &sglq_entry->phys);
3883 			if (sglq_entry->virt == NULL) {
3884 				kfree(sglq_entry);
3885 				lpfc_printf_log(phba, KERN_ERR,
3886 						LOG_TRACE_EVENT,
3887 						"6304 Failure to allocate an "
3888 						"NVMET buf:%d\n", i);
3889 				rc = -ENOMEM;
3890 				goto out_free_mem;
3891 			}
3892 			sglq_entry->sgl = sglq_entry->virt;
3893 			memset(sglq_entry->sgl, 0,
3894 			       phba->cfg_sg_dma_buf_size);
3895 			sglq_entry->state = SGL_FREED;
3896 			list_add_tail(&sglq_entry->list, &nvmet_sgl_list);
3897 		}
3898 		spin_lock_irq(&phba->hbalock);
3899 		spin_lock(&phba->sli4_hba.sgl_list_lock);
3900 		list_splice_init(&nvmet_sgl_list,
3901 				 &phba->sli4_hba.lpfc_nvmet_sgl_list);
3902 		spin_unlock(&phba->sli4_hba.sgl_list_lock);
3903 		spin_unlock_irq(&phba->hbalock);
3904 	} else if (nvmet_xri_cnt < phba->sli4_hba.nvmet_xri_cnt) {
3905 		/* nvmet xri-sgl shrunk */
3906 		xri_cnt = phba->sli4_hba.nvmet_xri_cnt - nvmet_xri_cnt;
3907 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3908 				"6305 NVMET xri-sgl count decreased from "
3909 				"%d to %d\n", phba->sli4_hba.nvmet_xri_cnt,
3910 				nvmet_xri_cnt);
3911 		spin_lock_irq(&phba->hbalock);
3912 		spin_lock(&phba->sli4_hba.sgl_list_lock);
3913 		list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list,
3914 				 &nvmet_sgl_list);
3915 		/* release extra nvmet sgls from list */
3916 		for (i = 0; i < xri_cnt; i++) {
3917 			list_remove_head(&nvmet_sgl_list,
3918 					 sglq_entry, struct lpfc_sglq, list);
3919 			if (sglq_entry) {
3920 				lpfc_nvmet_buf_free(phba, sglq_entry->virt,
3921 						    sglq_entry->phys);
3922 				kfree(sglq_entry);
3923 			}
3924 		}
3925 		list_splice_init(&nvmet_sgl_list,
3926 				 &phba->sli4_hba.lpfc_nvmet_sgl_list);
3927 		spin_unlock(&phba->sli4_hba.sgl_list_lock);
3928 		spin_unlock_irq(&phba->hbalock);
3929 	} else
3930 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3931 				"6306 NVMET xri-sgl count unchanged: %d\n",
3932 				nvmet_xri_cnt);
3933 	phba->sli4_hba.nvmet_xri_cnt = nvmet_xri_cnt;
3934 
3935 	/* update xris to nvmet sgls on the list */
3936 	sglq_entry = NULL;
3937 	sglq_entry_next = NULL;
3938 	list_for_each_entry_safe(sglq_entry, sglq_entry_next,
3939 				 &phba->sli4_hba.lpfc_nvmet_sgl_list, list) {
3940 		lxri = lpfc_sli4_next_xritag(phba);
3941 		if (lxri == NO_XRI) {
3942 			lpfc_printf_log(phba, KERN_ERR,
3943 					LOG_TRACE_EVENT,
3944 					"6307 Failed to allocate xri for "
3945 					"NVMET sgl\n");
3946 			rc = -ENOMEM;
3947 			goto out_free_mem;
3948 		}
3949 		sglq_entry->sli4_lxritag = lxri;
3950 		sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3951 	}
3952 	return 0;
3953 
3954 out_free_mem:
3955 	lpfc_free_nvmet_sgl_list(phba);
3956 	return rc;
3957 }
3958 
3959 int
3960 lpfc_io_buf_flush(struct lpfc_hba *phba, struct list_head *cbuf)
3961 {
3962 	LIST_HEAD(blist);
3963 	struct lpfc_sli4_hdw_queue *qp;
3964 	struct lpfc_io_buf *lpfc_cmd;
3965 	struct lpfc_io_buf *iobufp, *prev_iobufp;
3966 	int idx, cnt, xri, inserted;
3967 
3968 	cnt = 0;
3969 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
3970 		qp = &phba->sli4_hba.hdwq[idx];
3971 		spin_lock_irq(&qp->io_buf_list_get_lock);
3972 		spin_lock(&qp->io_buf_list_put_lock);
3973 
3974 		/* Take everything off the get and put lists */
3975 		list_splice_init(&qp->lpfc_io_buf_list_get, &blist);
3976 		list_splice(&qp->lpfc_io_buf_list_put, &blist);
3977 		INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
3978 		INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
3979 		cnt += qp->get_io_bufs + qp->put_io_bufs;
3980 		qp->get_io_bufs = 0;
3981 		qp->put_io_bufs = 0;
3982 		qp->total_io_bufs = 0;
3983 		spin_unlock(&qp->io_buf_list_put_lock);
3984 		spin_unlock_irq(&qp->io_buf_list_get_lock);
3985 	}
3986 
3987 	/*
3988 	 * Take IO buffers off blist and put on cbuf sorted by XRI.
3989 	 * This is because POST_SGL takes a sequential range of XRIs
3990 	 * to post to the firmware.
3991 	 */
3992 	for (idx = 0; idx < cnt; idx++) {
3993 		list_remove_head(&blist, lpfc_cmd, struct lpfc_io_buf, list);
3994 		if (!lpfc_cmd)
3995 			return cnt;
3996 		if (idx == 0) {
3997 			list_add_tail(&lpfc_cmd->list, cbuf);
3998 			continue;
3999 		}
4000 		xri = lpfc_cmd->cur_iocbq.sli4_xritag;
4001 		inserted = 0;
4002 		prev_iobufp = NULL;
4003 		list_for_each_entry(iobufp, cbuf, list) {
4004 			if (xri < iobufp->cur_iocbq.sli4_xritag) {
4005 				if (prev_iobufp)
4006 					list_add(&lpfc_cmd->list,
4007 						 &prev_iobufp->list);
4008 				else
4009 					list_add(&lpfc_cmd->list, cbuf);
4010 				inserted = 1;
4011 				break;
4012 			}
4013 			prev_iobufp = iobufp;
4014 		}
4015 		if (!inserted)
4016 			list_add_tail(&lpfc_cmd->list, cbuf);
4017 	}
4018 	return cnt;
4019 }
4020 
4021 int
4022 lpfc_io_buf_replenish(struct lpfc_hba *phba, struct list_head *cbuf)
4023 {
4024 	struct lpfc_sli4_hdw_queue *qp;
4025 	struct lpfc_io_buf *lpfc_cmd;
4026 	int idx, cnt;
4027 
4028 	qp = phba->sli4_hba.hdwq;
4029 	cnt = 0;
4030 	while (!list_empty(cbuf)) {
4031 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
4032 			list_remove_head(cbuf, lpfc_cmd,
4033 					 struct lpfc_io_buf, list);
4034 			if (!lpfc_cmd)
4035 				return cnt;
4036 			cnt++;
4037 			qp = &phba->sli4_hba.hdwq[idx];
4038 			lpfc_cmd->hdwq_no = idx;
4039 			lpfc_cmd->hdwq = qp;
4040 			lpfc_cmd->cur_iocbq.wqe_cmpl = NULL;
4041 			lpfc_cmd->cur_iocbq.iocb_cmpl = NULL;
4042 			spin_lock(&qp->io_buf_list_put_lock);
4043 			list_add_tail(&lpfc_cmd->list,
4044 				      &qp->lpfc_io_buf_list_put);
4045 			qp->put_io_bufs++;
4046 			qp->total_io_bufs++;
4047 			spin_unlock(&qp->io_buf_list_put_lock);
4048 		}
4049 	}
4050 	return cnt;
4051 }
4052 
4053 /**
4054  * lpfc_sli4_io_sgl_update - update xri-sgl sizing and mapping
4055  * @phba: pointer to lpfc hba data structure.
4056  *
4057  * This routine first calculates the sizes of the current els and allocated
4058  * scsi sgl lists, and then goes through all sgls to updates the physical
4059  * XRIs assigned due to port function reset. During port initialization, the
4060  * current els and allocated scsi sgl lists are 0s.
4061  *
4062  * Return codes
4063  *   0 - successful (for now, it always returns 0)
4064  **/
4065 int
4066 lpfc_sli4_io_sgl_update(struct lpfc_hba *phba)
4067 {
4068 	struct lpfc_io_buf *lpfc_ncmd = NULL, *lpfc_ncmd_next = NULL;
4069 	uint16_t i, lxri, els_xri_cnt;
4070 	uint16_t io_xri_cnt, io_xri_max;
4071 	LIST_HEAD(io_sgl_list);
4072 	int rc, cnt;
4073 
4074 	/*
4075 	 * update on pci function's allocated nvme xri-sgl list
4076 	 */
4077 
4078 	/* maximum number of xris available for nvme buffers */
4079 	els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4080 	io_xri_max = phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4081 	phba->sli4_hba.io_xri_max = io_xri_max;
4082 
4083 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4084 			"6074 Current allocated XRI sgl count:%d, "
4085 			"maximum XRI count:%d\n",
4086 			phba->sli4_hba.io_xri_cnt,
4087 			phba->sli4_hba.io_xri_max);
4088 
4089 	cnt = lpfc_io_buf_flush(phba, &io_sgl_list);
4090 
4091 	if (phba->sli4_hba.io_xri_cnt > phba->sli4_hba.io_xri_max) {
4092 		/* max nvme xri shrunk below the allocated nvme buffers */
4093 		io_xri_cnt = phba->sli4_hba.io_xri_cnt -
4094 					phba->sli4_hba.io_xri_max;
4095 		/* release the extra allocated nvme buffers */
4096 		for (i = 0; i < io_xri_cnt; i++) {
4097 			list_remove_head(&io_sgl_list, lpfc_ncmd,
4098 					 struct lpfc_io_buf, list);
4099 			if (lpfc_ncmd) {
4100 				dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4101 					      lpfc_ncmd->data,
4102 					      lpfc_ncmd->dma_handle);
4103 				kfree(lpfc_ncmd);
4104 			}
4105 		}
4106 		phba->sli4_hba.io_xri_cnt -= io_xri_cnt;
4107 	}
4108 
4109 	/* update xris associated to remaining allocated nvme buffers */
4110 	lpfc_ncmd = NULL;
4111 	lpfc_ncmd_next = NULL;
4112 	phba->sli4_hba.io_xri_cnt = cnt;
4113 	list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next,
4114 				 &io_sgl_list, list) {
4115 		lxri = lpfc_sli4_next_xritag(phba);
4116 		if (lxri == NO_XRI) {
4117 			lpfc_printf_log(phba, KERN_ERR,
4118 					LOG_TRACE_EVENT,
4119 					"6075 Failed to allocate xri for "
4120 					"nvme buffer\n");
4121 			rc = -ENOMEM;
4122 			goto out_free_mem;
4123 		}
4124 		lpfc_ncmd->cur_iocbq.sli4_lxritag = lxri;
4125 		lpfc_ncmd->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4126 	}
4127 	cnt = lpfc_io_buf_replenish(phba, &io_sgl_list);
4128 	return 0;
4129 
4130 out_free_mem:
4131 	lpfc_io_free(phba);
4132 	return rc;
4133 }
4134 
4135 /**
4136  * lpfc_new_io_buf - IO buffer allocator for HBA with SLI4 IF spec
4137  * @phba: Pointer to lpfc hba data structure.
4138  * @num_to_alloc: The requested number of buffers to allocate.
4139  *
4140  * This routine allocates nvme buffers for device with SLI-4 interface spec,
4141  * the nvme buffer contains all the necessary information needed to initiate
4142  * an I/O. After allocating up to @num_to_allocate IO buffers and put
4143  * them on a list, it post them to the port by using SGL block post.
4144  *
4145  * Return codes:
4146  *   int - number of IO buffers that were allocated and posted.
4147  *   0 = failure, less than num_to_alloc is a partial failure.
4148  **/
4149 int
4150 lpfc_new_io_buf(struct lpfc_hba *phba, int num_to_alloc)
4151 {
4152 	struct lpfc_io_buf *lpfc_ncmd;
4153 	struct lpfc_iocbq *pwqeq;
4154 	uint16_t iotag, lxri = 0;
4155 	int bcnt, num_posted;
4156 	LIST_HEAD(prep_nblist);
4157 	LIST_HEAD(post_nblist);
4158 	LIST_HEAD(nvme_nblist);
4159 
4160 	phba->sli4_hba.io_xri_cnt = 0;
4161 	for (bcnt = 0; bcnt < num_to_alloc; bcnt++) {
4162 		lpfc_ncmd = kzalloc(sizeof(*lpfc_ncmd), GFP_KERNEL);
4163 		if (!lpfc_ncmd)
4164 			break;
4165 		/*
4166 		 * Get memory from the pci pool to map the virt space to
4167 		 * pci bus space for an I/O. The DMA buffer includes the
4168 		 * number of SGE's necessary to support the sg_tablesize.
4169 		 */
4170 		lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool,
4171 						  GFP_KERNEL,
4172 						  &lpfc_ncmd->dma_handle);
4173 		if (!lpfc_ncmd->data) {
4174 			kfree(lpfc_ncmd);
4175 			break;
4176 		}
4177 
4178 		if (phba->cfg_xpsgl && !phba->nvmet_support) {
4179 			INIT_LIST_HEAD(&lpfc_ncmd->dma_sgl_xtra_list);
4180 		} else {
4181 			/*
4182 			 * 4K Page alignment is CRITICAL to BlockGuard, double
4183 			 * check to be sure.
4184 			 */
4185 			if ((phba->sli3_options & LPFC_SLI3_BG_ENABLED) &&
4186 			    (((unsigned long)(lpfc_ncmd->data) &
4187 			    (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) {
4188 				lpfc_printf_log(phba, KERN_ERR,
4189 						LOG_TRACE_EVENT,
4190 						"3369 Memory alignment err: "
4191 						"addr=%lx\n",
4192 						(unsigned long)lpfc_ncmd->data);
4193 				dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4194 					      lpfc_ncmd->data,
4195 					      lpfc_ncmd->dma_handle);
4196 				kfree(lpfc_ncmd);
4197 				break;
4198 			}
4199 		}
4200 
4201 		INIT_LIST_HEAD(&lpfc_ncmd->dma_cmd_rsp_list);
4202 
4203 		lxri = lpfc_sli4_next_xritag(phba);
4204 		if (lxri == NO_XRI) {
4205 			dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4206 				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4207 			kfree(lpfc_ncmd);
4208 			break;
4209 		}
4210 		pwqeq = &lpfc_ncmd->cur_iocbq;
4211 
4212 		/* Allocate iotag for lpfc_ncmd->cur_iocbq. */
4213 		iotag = lpfc_sli_next_iotag(phba, pwqeq);
4214 		if (iotag == 0) {
4215 			dma_pool_free(phba->lpfc_sg_dma_buf_pool,
4216 				      lpfc_ncmd->data, lpfc_ncmd->dma_handle);
4217 			kfree(lpfc_ncmd);
4218 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4219 					"6121 Failed to allocate IOTAG for"
4220 					" XRI:0x%x\n", lxri);
4221 			lpfc_sli4_free_xri(phba, lxri);
4222 			break;
4223 		}
4224 		pwqeq->sli4_lxritag = lxri;
4225 		pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
4226 		pwqeq->context1 = lpfc_ncmd;
4227 
4228 		/* Initialize local short-hand pointers. */
4229 		lpfc_ncmd->dma_sgl = lpfc_ncmd->data;
4230 		lpfc_ncmd->dma_phys_sgl = lpfc_ncmd->dma_handle;
4231 		lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd;
4232 		spin_lock_init(&lpfc_ncmd->buf_lock);
4233 
4234 		/* add the nvme buffer to a post list */
4235 		list_add_tail(&lpfc_ncmd->list, &post_nblist);
4236 		phba->sli4_hba.io_xri_cnt++;
4237 	}
4238 	lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
4239 			"6114 Allocate %d out of %d requested new NVME "
4240 			"buffers\n", bcnt, num_to_alloc);
4241 
4242 	/* post the list of nvme buffer sgls to port if available */
4243 	if (!list_empty(&post_nblist))
4244 		num_posted = lpfc_sli4_post_io_sgl_list(
4245 				phba, &post_nblist, bcnt);
4246 	else
4247 		num_posted = 0;
4248 
4249 	return num_posted;
4250 }
4251 
4252 static uint64_t
4253 lpfc_get_wwpn(struct lpfc_hba *phba)
4254 {
4255 	uint64_t wwn;
4256 	int rc;
4257 	LPFC_MBOXQ_t *mboxq;
4258 	MAILBOX_t *mb;
4259 
4260 	mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4261 						GFP_KERNEL);
4262 	if (!mboxq)
4263 		return (uint64_t)-1;
4264 
4265 	/* First get WWN of HBA instance */
4266 	lpfc_read_nv(phba, mboxq);
4267 	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4268 	if (rc != MBX_SUCCESS) {
4269 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4270 				"6019 Mailbox failed , mbxCmd x%x "
4271 				"READ_NV, mbxStatus x%x\n",
4272 				bf_get(lpfc_mqe_command, &mboxq->u.mqe),
4273 				bf_get(lpfc_mqe_status, &mboxq->u.mqe));
4274 		mempool_free(mboxq, phba->mbox_mem_pool);
4275 		return (uint64_t) -1;
4276 	}
4277 	mb = &mboxq->u.mb;
4278 	memcpy(&wwn, (char *)mb->un.varRDnvp.portname, sizeof(uint64_t));
4279 	/* wwn is WWPN of HBA instance */
4280 	mempool_free(mboxq, phba->mbox_mem_pool);
4281 	if (phba->sli_rev == LPFC_SLI_REV4)
4282 		return be64_to_cpu(wwn);
4283 	else
4284 		return rol64(wwn, 32);
4285 }
4286 
4287 /**
4288  * lpfc_create_port - Create an FC port
4289  * @phba: pointer to lpfc hba data structure.
4290  * @instance: a unique integer ID to this FC port.
4291  * @dev: pointer to the device data structure.
4292  *
4293  * This routine creates a FC port for the upper layer protocol. The FC port
4294  * can be created on top of either a physical port or a virtual port provided
4295  * by the HBA. This routine also allocates a SCSI host data structure (shost)
4296  * and associates the FC port created before adding the shost into the SCSI
4297  * layer.
4298  *
4299  * Return codes
4300  *   @vport - pointer to the virtual N_Port data structure.
4301  *   NULL - port create failed.
4302  **/
4303 struct lpfc_vport *
4304 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
4305 {
4306 	struct lpfc_vport *vport;
4307 	struct Scsi_Host  *shost = NULL;
4308 	struct scsi_host_template *template;
4309 	int error = 0;
4310 	int i;
4311 	uint64_t wwn;
4312 	bool use_no_reset_hba = false;
4313 	int rc;
4314 
4315 	if (lpfc_no_hba_reset_cnt) {
4316 		if (phba->sli_rev < LPFC_SLI_REV4 &&
4317 		    dev == &phba->pcidev->dev) {
4318 			/* Reset the port first */
4319 			lpfc_sli_brdrestart(phba);
4320 			rc = lpfc_sli_chipset_init(phba);
4321 			if (rc)
4322 				return NULL;
4323 		}
4324 		wwn = lpfc_get_wwpn(phba);
4325 	}
4326 
4327 	for (i = 0; i < lpfc_no_hba_reset_cnt; i++) {
4328 		if (wwn == lpfc_no_hba_reset[i]) {
4329 			lpfc_printf_log(phba, KERN_ERR,
4330 					LOG_TRACE_EVENT,
4331 					"6020 Setting use_no_reset port=%llx\n",
4332 					wwn);
4333 			use_no_reset_hba = true;
4334 			break;
4335 		}
4336 	}
4337 
4338 	/* Seed template for SCSI host registration */
4339 	if (dev == &phba->pcidev->dev) {
4340 		template = &phba->port_template;
4341 
4342 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
4343 			/* Seed physical port template */
4344 			memcpy(template, &lpfc_template, sizeof(*template));
4345 
4346 			if (use_no_reset_hba) {
4347 				/* template is for a no reset SCSI Host */
4348 				template->max_sectors = 0xffff;
4349 				template->eh_host_reset_handler = NULL;
4350 			}
4351 
4352 			/* Template for all vports this physical port creates */
4353 			memcpy(&phba->vport_template, &lpfc_template,
4354 			       sizeof(*template));
4355 			phba->vport_template.max_sectors = 0xffff;
4356 			phba->vport_template.shost_attrs = lpfc_vport_attrs;
4357 			phba->vport_template.eh_bus_reset_handler = NULL;
4358 			phba->vport_template.eh_host_reset_handler = NULL;
4359 			phba->vport_template.vendor_id = 0;
4360 
4361 			/* Initialize the host templates with updated value */
4362 			if (phba->sli_rev == LPFC_SLI_REV4) {
4363 				template->sg_tablesize = phba->cfg_scsi_seg_cnt;
4364 				phba->vport_template.sg_tablesize =
4365 					phba->cfg_scsi_seg_cnt;
4366 			} else {
4367 				template->sg_tablesize = phba->cfg_sg_seg_cnt;
4368 				phba->vport_template.sg_tablesize =
4369 					phba->cfg_sg_seg_cnt;
4370 			}
4371 
4372 		} else {
4373 			/* NVMET is for physical port only */
4374 			memcpy(template, &lpfc_template_nvme,
4375 			       sizeof(*template));
4376 		}
4377 	} else {
4378 		template = &phba->vport_template;
4379 	}
4380 
4381 	shost = scsi_host_alloc(template, sizeof(struct lpfc_vport));
4382 	if (!shost)
4383 		goto out;
4384 
4385 	vport = (struct lpfc_vport *) shost->hostdata;
4386 	vport->phba = phba;
4387 	vport->load_flag |= FC_LOADING;
4388 	vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
4389 	vport->fc_rscn_flush = 0;
4390 	lpfc_get_vport_cfgparam(vport);
4391 
4392 	/* Adjust value in vport */
4393 	vport->cfg_enable_fc4_type = phba->cfg_enable_fc4_type;
4394 
4395 	shost->unique_id = instance;
4396 	shost->max_id = LPFC_MAX_TARGET;
4397 	shost->max_lun = vport->cfg_max_luns;
4398 	shost->this_id = -1;
4399 	shost->max_cmd_len = 16;
4400 
4401 	if (phba->sli_rev == LPFC_SLI_REV4) {
4402 		if (!phba->cfg_fcp_mq_threshold ||
4403 		    phba->cfg_fcp_mq_threshold > phba->cfg_hdw_queue)
4404 			phba->cfg_fcp_mq_threshold = phba->cfg_hdw_queue;
4405 
4406 		shost->nr_hw_queues = min_t(int, 2 * num_possible_nodes(),
4407 					    phba->cfg_fcp_mq_threshold);
4408 
4409 		shost->dma_boundary =
4410 			phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
4411 
4412 		if (phba->cfg_xpsgl && !phba->nvmet_support)
4413 			shost->sg_tablesize = LPFC_MAX_SG_TABLESIZE;
4414 		else
4415 			shost->sg_tablesize = phba->cfg_scsi_seg_cnt;
4416 	} else
4417 		/* SLI-3 has a limited number of hardware queues (3),
4418 		 * thus there is only one for FCP processing.
4419 		 */
4420 		shost->nr_hw_queues = 1;
4421 
4422 	/*
4423 	 * Set initial can_queue value since 0 is no longer supported and
4424 	 * scsi_add_host will fail. This will be adjusted later based on the
4425 	 * max xri value determined in hba setup.
4426 	 */
4427 	shost->can_queue = phba->cfg_hba_queue_depth - 10;
4428 	if (dev != &phba->pcidev->dev) {
4429 		shost->transportt = lpfc_vport_transport_template;
4430 		vport->port_type = LPFC_NPIV_PORT;
4431 	} else {
4432 		shost->transportt = lpfc_transport_template;
4433 		vport->port_type = LPFC_PHYSICAL_PORT;
4434 	}
4435 
4436 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
4437 			"9081 CreatePort TMPLATE type %x TBLsize %d "
4438 			"SEGcnt %d/%d\n",
4439 			vport->port_type, shost->sg_tablesize,
4440 			phba->cfg_scsi_seg_cnt, phba->cfg_sg_seg_cnt);
4441 
4442 	/* Initialize all internally managed lists. */
4443 	INIT_LIST_HEAD(&vport->fc_nodes);
4444 	INIT_LIST_HEAD(&vport->rcv_buffer_list);
4445 	spin_lock_init(&vport->work_port_lock);
4446 
4447 	timer_setup(&vport->fc_disctmo, lpfc_disc_timeout, 0);
4448 
4449 	timer_setup(&vport->els_tmofunc, lpfc_els_timeout, 0);
4450 
4451 	timer_setup(&vport->delayed_disc_tmo, lpfc_delayed_disc_tmo, 0);
4452 
4453 	if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
4454 		lpfc_setup_bg(phba, shost);
4455 
4456 	error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
4457 	if (error)
4458 		goto out_put_shost;
4459 
4460 	spin_lock_irq(&phba->port_list_lock);
4461 	list_add_tail(&vport->listentry, &phba->port_list);
4462 	spin_unlock_irq(&phba->port_list_lock);
4463 	return vport;
4464 
4465 out_put_shost:
4466 	scsi_host_put(shost);
4467 out:
4468 	return NULL;
4469 }
4470 
4471 /**
4472  * destroy_port -  destroy an FC port
4473  * @vport: pointer to an lpfc virtual N_Port data structure.
4474  *
4475  * This routine destroys a FC port from the upper layer protocol. All the
4476  * resources associated with the port are released.
4477  **/
4478 void
4479 destroy_port(struct lpfc_vport *vport)
4480 {
4481 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4482 	struct lpfc_hba  *phba = vport->phba;
4483 
4484 	lpfc_debugfs_terminate(vport);
4485 	fc_remove_host(shost);
4486 	scsi_remove_host(shost);
4487 
4488 	spin_lock_irq(&phba->port_list_lock);
4489 	list_del_init(&vport->listentry);
4490 	spin_unlock_irq(&phba->port_list_lock);
4491 
4492 	lpfc_cleanup(vport);
4493 	return;
4494 }
4495 
4496 /**
4497  * lpfc_get_instance - Get a unique integer ID
4498  *
4499  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
4500  * uses the kernel idr facility to perform the task.
4501  *
4502  * Return codes:
4503  *   instance - a unique integer ID allocated as the new instance.
4504  *   -1 - lpfc get instance failed.
4505  **/
4506 int
4507 lpfc_get_instance(void)
4508 {
4509 	int ret;
4510 
4511 	ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
4512 	return ret < 0 ? -1 : ret;
4513 }
4514 
4515 /**
4516  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
4517  * @shost: pointer to SCSI host data structure.
4518  * @time: elapsed time of the scan in jiffies.
4519  *
4520  * This routine is called by the SCSI layer with a SCSI host to determine
4521  * whether the scan host is finished.
4522  *
4523  * Note: there is no scan_start function as adapter initialization will have
4524  * asynchronously kicked off the link initialization.
4525  *
4526  * Return codes
4527  *   0 - SCSI host scan is not over yet.
4528  *   1 - SCSI host scan is over.
4529  **/
4530 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
4531 {
4532 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4533 	struct lpfc_hba   *phba = vport->phba;
4534 	int stat = 0;
4535 
4536 	spin_lock_irq(shost->host_lock);
4537 
4538 	if (vport->load_flag & FC_UNLOADING) {
4539 		stat = 1;
4540 		goto finished;
4541 	}
4542 	if (time >= msecs_to_jiffies(30 * 1000)) {
4543 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4544 				"0461 Scanning longer than 30 "
4545 				"seconds.  Continuing initialization\n");
4546 		stat = 1;
4547 		goto finished;
4548 	}
4549 	if (time >= msecs_to_jiffies(15 * 1000) &&
4550 	    phba->link_state <= LPFC_LINK_DOWN) {
4551 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4552 				"0465 Link down longer than 15 "
4553 				"seconds.  Continuing initialization\n");
4554 		stat = 1;
4555 		goto finished;
4556 	}
4557 
4558 	if (vport->port_state != LPFC_VPORT_READY)
4559 		goto finished;
4560 	if (vport->num_disc_nodes || vport->fc_prli_sent)
4561 		goto finished;
4562 	if (vport->fc_map_cnt == 0 && time < msecs_to_jiffies(2 * 1000))
4563 		goto finished;
4564 	if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
4565 		goto finished;
4566 
4567 	stat = 1;
4568 
4569 finished:
4570 	spin_unlock_irq(shost->host_lock);
4571 	return stat;
4572 }
4573 
4574 static void lpfc_host_supported_speeds_set(struct Scsi_Host *shost)
4575 {
4576 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4577 	struct lpfc_hba   *phba = vport->phba;
4578 
4579 	fc_host_supported_speeds(shost) = 0;
4580 	/*
4581 	 * Avoid reporting supported link speed for FCoE as it can't be
4582 	 * controlled via FCoE.
4583 	 */
4584 	if (phba->hba_flag & HBA_FCOE_MODE)
4585 		return;
4586 
4587 	if (phba->lmt & LMT_128Gb)
4588 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_128GBIT;
4589 	if (phba->lmt & LMT_64Gb)
4590 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_64GBIT;
4591 	if (phba->lmt & LMT_32Gb)
4592 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_32GBIT;
4593 	if (phba->lmt & LMT_16Gb)
4594 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
4595 	if (phba->lmt & LMT_10Gb)
4596 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
4597 	if (phba->lmt & LMT_8Gb)
4598 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
4599 	if (phba->lmt & LMT_4Gb)
4600 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
4601 	if (phba->lmt & LMT_2Gb)
4602 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
4603 	if (phba->lmt & LMT_1Gb)
4604 		fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
4605 }
4606 
4607 /**
4608  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
4609  * @shost: pointer to SCSI host data structure.
4610  *
4611  * This routine initializes a given SCSI host attributes on a FC port. The
4612  * SCSI host can be either on top of a physical port or a virtual port.
4613  **/
4614 void lpfc_host_attrib_init(struct Scsi_Host *shost)
4615 {
4616 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4617 	struct lpfc_hba   *phba = vport->phba;
4618 	/*
4619 	 * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
4620 	 */
4621 
4622 	fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
4623 	fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
4624 	fc_host_supported_classes(shost) = FC_COS_CLASS3;
4625 
4626 	memset(fc_host_supported_fc4s(shost), 0,
4627 	       sizeof(fc_host_supported_fc4s(shost)));
4628 	fc_host_supported_fc4s(shost)[2] = 1;
4629 	fc_host_supported_fc4s(shost)[7] = 1;
4630 
4631 	lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
4632 				 sizeof fc_host_symbolic_name(shost));
4633 
4634 	lpfc_host_supported_speeds_set(shost);
4635 
4636 	fc_host_maxframe_size(shost) =
4637 		(((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
4638 		(uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
4639 
4640 	fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
4641 
4642 	/* This value is also unchanging */
4643 	memset(fc_host_active_fc4s(shost), 0,
4644 	       sizeof(fc_host_active_fc4s(shost)));
4645 	fc_host_active_fc4s(shost)[2] = 1;
4646 	fc_host_active_fc4s(shost)[7] = 1;
4647 
4648 	fc_host_max_npiv_vports(shost) = phba->max_vpi;
4649 	spin_lock_irq(shost->host_lock);
4650 	vport->load_flag &= ~FC_LOADING;
4651 	spin_unlock_irq(shost->host_lock);
4652 }
4653 
4654 /**
4655  * lpfc_stop_port_s3 - Stop SLI3 device port
4656  * @phba: pointer to lpfc hba data structure.
4657  *
4658  * This routine is invoked to stop an SLI3 device port, it stops the device
4659  * from generating interrupts and stops the device driver's timers for the
4660  * device.
4661  **/
4662 static void
4663 lpfc_stop_port_s3(struct lpfc_hba *phba)
4664 {
4665 	/* Clear all interrupt enable conditions */
4666 	writel(0, phba->HCregaddr);
4667 	readl(phba->HCregaddr); /* flush */
4668 	/* Clear all pending interrupts */
4669 	writel(0xffffffff, phba->HAregaddr);
4670 	readl(phba->HAregaddr); /* flush */
4671 
4672 	/* Reset some HBA SLI setup states */
4673 	lpfc_stop_hba_timers(phba);
4674 	phba->pport->work_port_events = 0;
4675 }
4676 
4677 /**
4678  * lpfc_stop_port_s4 - Stop SLI4 device port
4679  * @phba: pointer to lpfc hba data structure.
4680  *
4681  * This routine is invoked to stop an SLI4 device port, it stops the device
4682  * from generating interrupts and stops the device driver's timers for the
4683  * device.
4684  **/
4685 static void
4686 lpfc_stop_port_s4(struct lpfc_hba *phba)
4687 {
4688 	/* Reset some HBA SLI4 setup states */
4689 	lpfc_stop_hba_timers(phba);
4690 	if (phba->pport)
4691 		phba->pport->work_port_events = 0;
4692 	phba->sli4_hba.intr_enable = 0;
4693 }
4694 
4695 /**
4696  * lpfc_stop_port - Wrapper function for stopping hba port
4697  * @phba: Pointer to HBA context object.
4698  *
4699  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
4700  * the API jump table function pointer from the lpfc_hba struct.
4701  **/
4702 void
4703 lpfc_stop_port(struct lpfc_hba *phba)
4704 {
4705 	phba->lpfc_stop_port(phba);
4706 
4707 	if (phba->wq)
4708 		flush_workqueue(phba->wq);
4709 }
4710 
4711 /**
4712  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
4713  * @phba: Pointer to hba for which this call is being executed.
4714  *
4715  * This routine starts the timer waiting for the FCF rediscovery to complete.
4716  **/
4717 void
4718 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
4719 {
4720 	unsigned long fcf_redisc_wait_tmo =
4721 		(jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
4722 	/* Start fcf rediscovery wait period timer */
4723 	mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
4724 	spin_lock_irq(&phba->hbalock);
4725 	/* Allow action to new fcf asynchronous event */
4726 	phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
4727 	/* Mark the FCF rediscovery pending state */
4728 	phba->fcf.fcf_flag |= FCF_REDISC_PEND;
4729 	spin_unlock_irq(&phba->hbalock);
4730 }
4731 
4732 /**
4733  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
4734  * @t: Timer context used to obtain the pointer to lpfc hba data structure.
4735  *
4736  * This routine is invoked when waiting for FCF table rediscover has been
4737  * timed out. If new FCF record(s) has (have) been discovered during the
4738  * wait period, a new FCF event shall be added to the FCOE async event
4739  * list, and then worker thread shall be waked up for processing from the
4740  * worker thread context.
4741  **/
4742 static void
4743 lpfc_sli4_fcf_redisc_wait_tmo(struct timer_list *t)
4744 {
4745 	struct lpfc_hba *phba = from_timer(phba, t, fcf.redisc_wait);
4746 
4747 	/* Don't send FCF rediscovery event if timer cancelled */
4748 	spin_lock_irq(&phba->hbalock);
4749 	if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
4750 		spin_unlock_irq(&phba->hbalock);
4751 		return;
4752 	}
4753 	/* Clear FCF rediscovery timer pending flag */
4754 	phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
4755 	/* FCF rediscovery event to worker thread */
4756 	phba->fcf.fcf_flag |= FCF_REDISC_EVT;
4757 	spin_unlock_irq(&phba->hbalock);
4758 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
4759 			"2776 FCF rediscover quiescent timer expired\n");
4760 	/* wake up worker thread */
4761 	lpfc_worker_wake_up(phba);
4762 }
4763 
4764 /**
4765  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
4766  * @phba: pointer to lpfc hba data structure.
4767  * @acqe_link: pointer to the async link completion queue entry.
4768  *
4769  * This routine is to parse the SLI4 link-attention link fault code.
4770  **/
4771 static void
4772 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
4773 			   struct lpfc_acqe_link *acqe_link)
4774 {
4775 	switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
4776 	case LPFC_ASYNC_LINK_FAULT_NONE:
4777 	case LPFC_ASYNC_LINK_FAULT_LOCAL:
4778 	case LPFC_ASYNC_LINK_FAULT_REMOTE:
4779 	case LPFC_ASYNC_LINK_FAULT_LR_LRR:
4780 		break;
4781 	default:
4782 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4783 				"0398 Unknown link fault code: x%x\n",
4784 				bf_get(lpfc_acqe_link_fault, acqe_link));
4785 		break;
4786 	}
4787 }
4788 
4789 /**
4790  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
4791  * @phba: pointer to lpfc hba data structure.
4792  * @acqe_link: pointer to the async link completion queue entry.
4793  *
4794  * This routine is to parse the SLI4 link attention type and translate it
4795  * into the base driver's link attention type coding.
4796  *
4797  * Return: Link attention type in terms of base driver's coding.
4798  **/
4799 static uint8_t
4800 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
4801 			  struct lpfc_acqe_link *acqe_link)
4802 {
4803 	uint8_t att_type;
4804 
4805 	switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
4806 	case LPFC_ASYNC_LINK_STATUS_DOWN:
4807 	case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
4808 		att_type = LPFC_ATT_LINK_DOWN;
4809 		break;
4810 	case LPFC_ASYNC_LINK_STATUS_UP:
4811 		/* Ignore physical link up events - wait for logical link up */
4812 		att_type = LPFC_ATT_RESERVED;
4813 		break;
4814 	case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
4815 		att_type = LPFC_ATT_LINK_UP;
4816 		break;
4817 	default:
4818 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4819 				"0399 Invalid link attention type: x%x\n",
4820 				bf_get(lpfc_acqe_link_status, acqe_link));
4821 		att_type = LPFC_ATT_RESERVED;
4822 		break;
4823 	}
4824 	return att_type;
4825 }
4826 
4827 /**
4828  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
4829  * @phba: pointer to lpfc hba data structure.
4830  *
4831  * This routine is to get an SLI3 FC port's link speed in Mbps.
4832  *
4833  * Return: link speed in terms of Mbps.
4834  **/
4835 uint32_t
4836 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
4837 {
4838 	uint32_t link_speed;
4839 
4840 	if (!lpfc_is_link_up(phba))
4841 		return 0;
4842 
4843 	if (phba->sli_rev <= LPFC_SLI_REV3) {
4844 		switch (phba->fc_linkspeed) {
4845 		case LPFC_LINK_SPEED_1GHZ:
4846 			link_speed = 1000;
4847 			break;
4848 		case LPFC_LINK_SPEED_2GHZ:
4849 			link_speed = 2000;
4850 			break;
4851 		case LPFC_LINK_SPEED_4GHZ:
4852 			link_speed = 4000;
4853 			break;
4854 		case LPFC_LINK_SPEED_8GHZ:
4855 			link_speed = 8000;
4856 			break;
4857 		case LPFC_LINK_SPEED_10GHZ:
4858 			link_speed = 10000;
4859 			break;
4860 		case LPFC_LINK_SPEED_16GHZ:
4861 			link_speed = 16000;
4862 			break;
4863 		default:
4864 			link_speed = 0;
4865 		}
4866 	} else {
4867 		if (phba->sli4_hba.link_state.logical_speed)
4868 			link_speed =
4869 			      phba->sli4_hba.link_state.logical_speed;
4870 		else
4871 			link_speed = phba->sli4_hba.link_state.speed;
4872 	}
4873 	return link_speed;
4874 }
4875 
4876 /**
4877  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
4878  * @phba: pointer to lpfc hba data structure.
4879  * @evt_code: asynchronous event code.
4880  * @speed_code: asynchronous event link speed code.
4881  *
4882  * This routine is to parse the giving SLI4 async event link speed code into
4883  * value of Mbps for the link speed.
4884  *
4885  * Return: link speed in terms of Mbps.
4886  **/
4887 static uint32_t
4888 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
4889 			   uint8_t speed_code)
4890 {
4891 	uint32_t port_speed;
4892 
4893 	switch (evt_code) {
4894 	case LPFC_TRAILER_CODE_LINK:
4895 		switch (speed_code) {
4896 		case LPFC_ASYNC_LINK_SPEED_ZERO:
4897 			port_speed = 0;
4898 			break;
4899 		case LPFC_ASYNC_LINK_SPEED_10MBPS:
4900 			port_speed = 10;
4901 			break;
4902 		case LPFC_ASYNC_LINK_SPEED_100MBPS:
4903 			port_speed = 100;
4904 			break;
4905 		case LPFC_ASYNC_LINK_SPEED_1GBPS:
4906 			port_speed = 1000;
4907 			break;
4908 		case LPFC_ASYNC_LINK_SPEED_10GBPS:
4909 			port_speed = 10000;
4910 			break;
4911 		case LPFC_ASYNC_LINK_SPEED_20GBPS:
4912 			port_speed = 20000;
4913 			break;
4914 		case LPFC_ASYNC_LINK_SPEED_25GBPS:
4915 			port_speed = 25000;
4916 			break;
4917 		case LPFC_ASYNC_LINK_SPEED_40GBPS:
4918 			port_speed = 40000;
4919 			break;
4920 		case LPFC_ASYNC_LINK_SPEED_100GBPS:
4921 			port_speed = 100000;
4922 			break;
4923 		default:
4924 			port_speed = 0;
4925 		}
4926 		break;
4927 	case LPFC_TRAILER_CODE_FC:
4928 		switch (speed_code) {
4929 		case LPFC_FC_LA_SPEED_UNKNOWN:
4930 			port_speed = 0;
4931 			break;
4932 		case LPFC_FC_LA_SPEED_1G:
4933 			port_speed = 1000;
4934 			break;
4935 		case LPFC_FC_LA_SPEED_2G:
4936 			port_speed = 2000;
4937 			break;
4938 		case LPFC_FC_LA_SPEED_4G:
4939 			port_speed = 4000;
4940 			break;
4941 		case LPFC_FC_LA_SPEED_8G:
4942 			port_speed = 8000;
4943 			break;
4944 		case LPFC_FC_LA_SPEED_10G:
4945 			port_speed = 10000;
4946 			break;
4947 		case LPFC_FC_LA_SPEED_16G:
4948 			port_speed = 16000;
4949 			break;
4950 		case LPFC_FC_LA_SPEED_32G:
4951 			port_speed = 32000;
4952 			break;
4953 		case LPFC_FC_LA_SPEED_64G:
4954 			port_speed = 64000;
4955 			break;
4956 		case LPFC_FC_LA_SPEED_128G:
4957 			port_speed = 128000;
4958 			break;
4959 		default:
4960 			port_speed = 0;
4961 		}
4962 		break;
4963 	default:
4964 		port_speed = 0;
4965 	}
4966 	return port_speed;
4967 }
4968 
4969 /**
4970  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
4971  * @phba: pointer to lpfc hba data structure.
4972  * @acqe_link: pointer to the async link completion queue entry.
4973  *
4974  * This routine is to handle the SLI4 asynchronous FCoE link event.
4975  **/
4976 static void
4977 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
4978 			 struct lpfc_acqe_link *acqe_link)
4979 {
4980 	struct lpfc_dmabuf *mp;
4981 	LPFC_MBOXQ_t *pmb;
4982 	MAILBOX_t *mb;
4983 	struct lpfc_mbx_read_top *la;
4984 	uint8_t att_type;
4985 	int rc;
4986 
4987 	att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
4988 	if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
4989 		return;
4990 	phba->fcoe_eventtag = acqe_link->event_tag;
4991 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4992 	if (!pmb) {
4993 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
4994 				"0395 The mboxq allocation failed\n");
4995 		return;
4996 	}
4997 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
4998 	if (!mp) {
4999 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5000 				"0396 The lpfc_dmabuf allocation failed\n");
5001 		goto out_free_pmb;
5002 	}
5003 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
5004 	if (!mp->virt) {
5005 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5006 				"0397 The mbuf allocation failed\n");
5007 		goto out_free_dmabuf;
5008 	}
5009 
5010 	/* Cleanup any outstanding ELS commands */
5011 	lpfc_els_flush_all_cmd(phba);
5012 
5013 	/* Block ELS IOCBs until we have done process link event */
5014 	phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5015 
5016 	/* Update link event statistics */
5017 	phba->sli.slistat.link_event++;
5018 
5019 	/* Create lpfc_handle_latt mailbox command from link ACQE */
5020 	lpfc_read_topology(phba, pmb, mp);
5021 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5022 	pmb->vport = phba->pport;
5023 
5024 	/* Keep the link status for extra SLI4 state machine reference */
5025 	phba->sli4_hba.link_state.speed =
5026 			lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
5027 				bf_get(lpfc_acqe_link_speed, acqe_link));
5028 	phba->sli4_hba.link_state.duplex =
5029 				bf_get(lpfc_acqe_link_duplex, acqe_link);
5030 	phba->sli4_hba.link_state.status =
5031 				bf_get(lpfc_acqe_link_status, acqe_link);
5032 	phba->sli4_hba.link_state.type =
5033 				bf_get(lpfc_acqe_link_type, acqe_link);
5034 	phba->sli4_hba.link_state.number =
5035 				bf_get(lpfc_acqe_link_number, acqe_link);
5036 	phba->sli4_hba.link_state.fault =
5037 				bf_get(lpfc_acqe_link_fault, acqe_link);
5038 	phba->sli4_hba.link_state.logical_speed =
5039 			bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
5040 
5041 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5042 			"2900 Async FC/FCoE Link event - Speed:%dGBit "
5043 			"duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
5044 			"Logical speed:%dMbps Fault:%d\n",
5045 			phba->sli4_hba.link_state.speed,
5046 			phba->sli4_hba.link_state.topology,
5047 			phba->sli4_hba.link_state.status,
5048 			phba->sli4_hba.link_state.type,
5049 			phba->sli4_hba.link_state.number,
5050 			phba->sli4_hba.link_state.logical_speed,
5051 			phba->sli4_hba.link_state.fault);
5052 	/*
5053 	 * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
5054 	 * topology info. Note: Optional for non FC-AL ports.
5055 	 */
5056 	if (!(phba->hba_flag & HBA_FCOE_MODE)) {
5057 		rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5058 		if (rc == MBX_NOT_FINISHED)
5059 			goto out_free_dmabuf;
5060 		return;
5061 	}
5062 	/*
5063 	 * For FCoE Mode: fill in all the topology information we need and call
5064 	 * the READ_TOPOLOGY completion routine to continue without actually
5065 	 * sending the READ_TOPOLOGY mailbox command to the port.
5066 	 */
5067 	/* Initialize completion status */
5068 	mb = &pmb->u.mb;
5069 	mb->mbxStatus = MBX_SUCCESS;
5070 
5071 	/* Parse port fault information field */
5072 	lpfc_sli4_parse_latt_fault(phba, acqe_link);
5073 
5074 	/* Parse and translate link attention fields */
5075 	la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
5076 	la->eventTag = acqe_link->event_tag;
5077 	bf_set(lpfc_mbx_read_top_att_type, la, att_type);
5078 	bf_set(lpfc_mbx_read_top_link_spd, la,
5079 	       (bf_get(lpfc_acqe_link_speed, acqe_link)));
5080 
5081 	/* Fake the the following irrelvant fields */
5082 	bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
5083 	bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
5084 	bf_set(lpfc_mbx_read_top_il, la, 0);
5085 	bf_set(lpfc_mbx_read_top_pb, la, 0);
5086 	bf_set(lpfc_mbx_read_top_fa, la, 0);
5087 	bf_set(lpfc_mbx_read_top_mm, la, 0);
5088 
5089 	/* Invoke the lpfc_handle_latt mailbox command callback function */
5090 	lpfc_mbx_cmpl_read_topology(phba, pmb);
5091 
5092 	return;
5093 
5094 out_free_dmabuf:
5095 	kfree(mp);
5096 out_free_pmb:
5097 	mempool_free(pmb, phba->mbox_mem_pool);
5098 }
5099 
5100 /**
5101  * lpfc_async_link_speed_to_read_top - Parse async evt link speed code to read
5102  * topology.
5103  * @phba: pointer to lpfc hba data structure.
5104  * @speed_code: asynchronous event link speed code.
5105  *
5106  * This routine is to parse the giving SLI4 async event link speed code into
5107  * value of Read topology link speed.
5108  *
5109  * Return: link speed in terms of Read topology.
5110  **/
5111 static uint8_t
5112 lpfc_async_link_speed_to_read_top(struct lpfc_hba *phba, uint8_t speed_code)
5113 {
5114 	uint8_t port_speed;
5115 
5116 	switch (speed_code) {
5117 	case LPFC_FC_LA_SPEED_1G:
5118 		port_speed = LPFC_LINK_SPEED_1GHZ;
5119 		break;
5120 	case LPFC_FC_LA_SPEED_2G:
5121 		port_speed = LPFC_LINK_SPEED_2GHZ;
5122 		break;
5123 	case LPFC_FC_LA_SPEED_4G:
5124 		port_speed = LPFC_LINK_SPEED_4GHZ;
5125 		break;
5126 	case LPFC_FC_LA_SPEED_8G:
5127 		port_speed = LPFC_LINK_SPEED_8GHZ;
5128 		break;
5129 	case LPFC_FC_LA_SPEED_16G:
5130 		port_speed = LPFC_LINK_SPEED_16GHZ;
5131 		break;
5132 	case LPFC_FC_LA_SPEED_32G:
5133 		port_speed = LPFC_LINK_SPEED_32GHZ;
5134 		break;
5135 	case LPFC_FC_LA_SPEED_64G:
5136 		port_speed = LPFC_LINK_SPEED_64GHZ;
5137 		break;
5138 	case LPFC_FC_LA_SPEED_128G:
5139 		port_speed = LPFC_LINK_SPEED_128GHZ;
5140 		break;
5141 	case LPFC_FC_LA_SPEED_256G:
5142 		port_speed = LPFC_LINK_SPEED_256GHZ;
5143 		break;
5144 	default:
5145 		port_speed = 0;
5146 		break;
5147 	}
5148 
5149 	return port_speed;
5150 }
5151 
5152 #define trunk_link_status(__idx)\
5153 	bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
5154 	       ((phba->trunk_link.link##__idx.state == LPFC_LINK_UP) ?\
5155 		"Link up" : "Link down") : "NA"
5156 /* Did port __idx reported an error */
5157 #define trunk_port_fault(__idx)\
5158 	bf_get(lpfc_acqe_fc_la_trunk_config_port##__idx, acqe_fc) ?\
5159 	       (port_fault & (1 << __idx) ? "YES" : "NO") : "NA"
5160 
5161 static void
5162 lpfc_update_trunk_link_status(struct lpfc_hba *phba,
5163 			      struct lpfc_acqe_fc_la *acqe_fc)
5164 {
5165 	uint8_t port_fault = bf_get(lpfc_acqe_fc_la_trunk_linkmask, acqe_fc);
5166 	uint8_t err = bf_get(lpfc_acqe_fc_la_trunk_fault, acqe_fc);
5167 
5168 	phba->sli4_hba.link_state.speed =
5169 		lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
5170 				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5171 
5172 	phba->sli4_hba.link_state.logical_speed =
5173 				bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
5174 	/* We got FC link speed, convert to fc_linkspeed (READ_TOPOLOGY) */
5175 	phba->fc_linkspeed =
5176 		 lpfc_async_link_speed_to_read_top(
5177 				phba,
5178 				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5179 
5180 	if (bf_get(lpfc_acqe_fc_la_trunk_config_port0, acqe_fc)) {
5181 		phba->trunk_link.link0.state =
5182 			bf_get(lpfc_acqe_fc_la_trunk_link_status_port0, acqe_fc)
5183 			? LPFC_LINK_UP : LPFC_LINK_DOWN;
5184 		phba->trunk_link.link0.fault = port_fault & 0x1 ? err : 0;
5185 	}
5186 	if (bf_get(lpfc_acqe_fc_la_trunk_config_port1, acqe_fc)) {
5187 		phba->trunk_link.link1.state =
5188 			bf_get(lpfc_acqe_fc_la_trunk_link_status_port1, acqe_fc)
5189 			? LPFC_LINK_UP : LPFC_LINK_DOWN;
5190 		phba->trunk_link.link1.fault = port_fault & 0x2 ? err : 0;
5191 	}
5192 	if (bf_get(lpfc_acqe_fc_la_trunk_config_port2, acqe_fc)) {
5193 		phba->trunk_link.link2.state =
5194 			bf_get(lpfc_acqe_fc_la_trunk_link_status_port2, acqe_fc)
5195 			? LPFC_LINK_UP : LPFC_LINK_DOWN;
5196 		phba->trunk_link.link2.fault = port_fault & 0x4 ? err : 0;
5197 	}
5198 	if (bf_get(lpfc_acqe_fc_la_trunk_config_port3, acqe_fc)) {
5199 		phba->trunk_link.link3.state =
5200 			bf_get(lpfc_acqe_fc_la_trunk_link_status_port3, acqe_fc)
5201 			? LPFC_LINK_UP : LPFC_LINK_DOWN;
5202 		phba->trunk_link.link3.fault = port_fault & 0x8 ? err : 0;
5203 	}
5204 
5205 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5206 			"2910 Async FC Trunking Event - Speed:%d\n"
5207 			"\tLogical speed:%d "
5208 			"port0: %s port1: %s port2: %s port3: %s\n",
5209 			phba->sli4_hba.link_state.speed,
5210 			phba->sli4_hba.link_state.logical_speed,
5211 			trunk_link_status(0), trunk_link_status(1),
5212 			trunk_link_status(2), trunk_link_status(3));
5213 
5214 	if (port_fault)
5215 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5216 				"3202 trunk error:0x%x (%s) seen on port0:%s "
5217 				/*
5218 				 * SLI-4: We have only 0xA error codes
5219 				 * defined as of now. print an appropriate
5220 				 * message in case driver needs to be updated.
5221 				 */
5222 				"port1:%s port2:%s port3:%s\n", err, err > 0xA ?
5223 				"UNDEFINED. update driver." : trunk_errmsg[err],
5224 				trunk_port_fault(0), trunk_port_fault(1),
5225 				trunk_port_fault(2), trunk_port_fault(3));
5226 }
5227 
5228 
5229 /**
5230  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
5231  * @phba: pointer to lpfc hba data structure.
5232  * @acqe_fc: pointer to the async fc completion queue entry.
5233  *
5234  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
5235  * that the event was received and then issue a read_topology mailbox command so
5236  * that the rest of the driver will treat it the same as SLI3.
5237  **/
5238 static void
5239 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
5240 {
5241 	struct lpfc_dmabuf *mp;
5242 	LPFC_MBOXQ_t *pmb;
5243 	MAILBOX_t *mb;
5244 	struct lpfc_mbx_read_top *la;
5245 	int rc;
5246 
5247 	if (bf_get(lpfc_trailer_type, acqe_fc) !=
5248 	    LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
5249 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5250 				"2895 Non FC link Event detected.(%d)\n",
5251 				bf_get(lpfc_trailer_type, acqe_fc));
5252 		return;
5253 	}
5254 
5255 	if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
5256 	    LPFC_FC_LA_TYPE_TRUNKING_EVENT) {
5257 		lpfc_update_trunk_link_status(phba, acqe_fc);
5258 		return;
5259 	}
5260 
5261 	/* Keep the link status for extra SLI4 state machine reference */
5262 	phba->sli4_hba.link_state.speed =
5263 			lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
5264 				bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
5265 	phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
5266 	phba->sli4_hba.link_state.topology =
5267 				bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
5268 	phba->sli4_hba.link_state.status =
5269 				bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
5270 	phba->sli4_hba.link_state.type =
5271 				bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
5272 	phba->sli4_hba.link_state.number =
5273 				bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
5274 	phba->sli4_hba.link_state.fault =
5275 				bf_get(lpfc_acqe_link_fault, acqe_fc);
5276 
5277 	if (bf_get(lpfc_acqe_fc_la_att_type, acqe_fc) ==
5278 	    LPFC_FC_LA_TYPE_LINK_DOWN)
5279 		phba->sli4_hba.link_state.logical_speed = 0;
5280 	else if	(!phba->sli4_hba.conf_trunk)
5281 		phba->sli4_hba.link_state.logical_speed =
5282 				bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
5283 
5284 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5285 			"2896 Async FC event - Speed:%dGBaud Topology:x%x "
5286 			"LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
5287 			"%dMbps Fault:%d\n",
5288 			phba->sli4_hba.link_state.speed,
5289 			phba->sli4_hba.link_state.topology,
5290 			phba->sli4_hba.link_state.status,
5291 			phba->sli4_hba.link_state.type,
5292 			phba->sli4_hba.link_state.number,
5293 			phba->sli4_hba.link_state.logical_speed,
5294 			phba->sli4_hba.link_state.fault);
5295 	pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5296 	if (!pmb) {
5297 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5298 				"2897 The mboxq allocation failed\n");
5299 		return;
5300 	}
5301 	mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5302 	if (!mp) {
5303 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5304 				"2898 The lpfc_dmabuf allocation failed\n");
5305 		goto out_free_pmb;
5306 	}
5307 	mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
5308 	if (!mp->virt) {
5309 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5310 				"2899 The mbuf allocation failed\n");
5311 		goto out_free_dmabuf;
5312 	}
5313 
5314 	/* Cleanup any outstanding ELS commands */
5315 	lpfc_els_flush_all_cmd(phba);
5316 
5317 	/* Block ELS IOCBs until we have done process link event */
5318 	phba->sli4_hba.els_wq->pring->flag |= LPFC_STOP_IOCB_EVENT;
5319 
5320 	/* Update link event statistics */
5321 	phba->sli.slistat.link_event++;
5322 
5323 	/* Create lpfc_handle_latt mailbox command from link ACQE */
5324 	lpfc_read_topology(phba, pmb, mp);
5325 	pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
5326 	pmb->vport = phba->pport;
5327 
5328 	if (phba->sli4_hba.link_state.status != LPFC_FC_LA_TYPE_LINK_UP) {
5329 		phba->link_flag &= ~(LS_MDS_LINK_DOWN | LS_MDS_LOOPBACK);
5330 
5331 		switch (phba->sli4_hba.link_state.status) {
5332 		case LPFC_FC_LA_TYPE_MDS_LINK_DOWN:
5333 			phba->link_flag |= LS_MDS_LINK_DOWN;
5334 			break;
5335 		case LPFC_FC_LA_TYPE_MDS_LOOPBACK:
5336 			phba->link_flag |= LS_MDS_LOOPBACK;
5337 			break;
5338 		default:
5339 			break;
5340 		}
5341 
5342 		/* Initialize completion status */
5343 		mb = &pmb->u.mb;
5344 		mb->mbxStatus = MBX_SUCCESS;
5345 
5346 		/* Parse port fault information field */
5347 		lpfc_sli4_parse_latt_fault(phba, (void *)acqe_fc);
5348 
5349 		/* Parse and translate link attention fields */
5350 		la = (struct lpfc_mbx_read_top *)&pmb->u.mb.un.varReadTop;
5351 		la->eventTag = acqe_fc->event_tag;
5352 
5353 		if (phba->sli4_hba.link_state.status ==
5354 		    LPFC_FC_LA_TYPE_UNEXP_WWPN) {
5355 			bf_set(lpfc_mbx_read_top_att_type, la,
5356 			       LPFC_FC_LA_TYPE_UNEXP_WWPN);
5357 		} else {
5358 			bf_set(lpfc_mbx_read_top_att_type, la,
5359 			       LPFC_FC_LA_TYPE_LINK_DOWN);
5360 		}
5361 		/* Invoke the mailbox command callback function */
5362 		lpfc_mbx_cmpl_read_topology(phba, pmb);
5363 
5364 		return;
5365 	}
5366 
5367 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
5368 	if (rc == MBX_NOT_FINISHED)
5369 		goto out_free_dmabuf;
5370 	return;
5371 
5372 out_free_dmabuf:
5373 	kfree(mp);
5374 out_free_pmb:
5375 	mempool_free(pmb, phba->mbox_mem_pool);
5376 }
5377 
5378 /**
5379  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
5380  * @phba: pointer to lpfc hba data structure.
5381  * @acqe_sli: pointer to the async SLI completion queue entry.
5382  *
5383  * This routine is to handle the SLI4 asynchronous SLI events.
5384  **/
5385 static void
5386 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
5387 {
5388 	char port_name;
5389 	char message[128];
5390 	uint8_t status;
5391 	uint8_t evt_type;
5392 	uint8_t operational = 0;
5393 	struct temp_event temp_event_data;
5394 	struct lpfc_acqe_misconfigured_event *misconfigured;
5395 	struct Scsi_Host  *shost;
5396 	struct lpfc_vport **vports;
5397 	int rc, i;
5398 
5399 	evt_type = bf_get(lpfc_trailer_type, acqe_sli);
5400 
5401 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5402 			"2901 Async SLI event - Type:%d, Event Data: x%08x "
5403 			"x%08x x%08x x%08x\n", evt_type,
5404 			acqe_sli->event_data1, acqe_sli->event_data2,
5405 			acqe_sli->reserved, acqe_sli->trailer);
5406 
5407 	port_name = phba->Port[0];
5408 	if (port_name == 0x00)
5409 		port_name = '?'; /* get port name is empty */
5410 
5411 	switch (evt_type) {
5412 	case LPFC_SLI_EVENT_TYPE_OVER_TEMP:
5413 		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
5414 		temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
5415 		temp_event_data.data = (uint32_t)acqe_sli->event_data1;
5416 
5417 		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5418 				"3190 Over Temperature:%d Celsius- Port Name %c\n",
5419 				acqe_sli->event_data1, port_name);
5420 
5421 		phba->sfp_warning |= LPFC_TRANSGRESSION_HIGH_TEMPERATURE;
5422 		shost = lpfc_shost_from_vport(phba->pport);
5423 		fc_host_post_vendor_event(shost, fc_get_event_number(),
5424 					  sizeof(temp_event_data),
5425 					  (char *)&temp_event_data,
5426 					  SCSI_NL_VID_TYPE_PCI
5427 					  | PCI_VENDOR_ID_EMULEX);
5428 		break;
5429 	case LPFC_SLI_EVENT_TYPE_NORM_TEMP:
5430 		temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
5431 		temp_event_data.event_code = LPFC_NORMAL_TEMP;
5432 		temp_event_data.data = (uint32_t)acqe_sli->event_data1;
5433 
5434 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5435 				"3191 Normal Temperature:%d Celsius - Port Name %c\n",
5436 				acqe_sli->event_data1, port_name);
5437 
5438 		shost = lpfc_shost_from_vport(phba->pport);
5439 		fc_host_post_vendor_event(shost, fc_get_event_number(),
5440 					  sizeof(temp_event_data),
5441 					  (char *)&temp_event_data,
5442 					  SCSI_NL_VID_TYPE_PCI
5443 					  | PCI_VENDOR_ID_EMULEX);
5444 		break;
5445 	case LPFC_SLI_EVENT_TYPE_MISCONFIGURED:
5446 		misconfigured = (struct lpfc_acqe_misconfigured_event *)
5447 					&acqe_sli->event_data1;
5448 
5449 		/* fetch the status for this port */
5450 		switch (phba->sli4_hba.lnk_info.lnk_no) {
5451 		case LPFC_LINK_NUMBER_0:
5452 			status = bf_get(lpfc_sli_misconfigured_port0_state,
5453 					&misconfigured->theEvent);
5454 			operational = bf_get(lpfc_sli_misconfigured_port0_op,
5455 					&misconfigured->theEvent);
5456 			break;
5457 		case LPFC_LINK_NUMBER_1:
5458 			status = bf_get(lpfc_sli_misconfigured_port1_state,
5459 					&misconfigured->theEvent);
5460 			operational = bf_get(lpfc_sli_misconfigured_port1_op,
5461 					&misconfigured->theEvent);
5462 			break;
5463 		case LPFC_LINK_NUMBER_2:
5464 			status = bf_get(lpfc_sli_misconfigured_port2_state,
5465 					&misconfigured->theEvent);
5466 			operational = bf_get(lpfc_sli_misconfigured_port2_op,
5467 					&misconfigured->theEvent);
5468 			break;
5469 		case LPFC_LINK_NUMBER_3:
5470 			status = bf_get(lpfc_sli_misconfigured_port3_state,
5471 					&misconfigured->theEvent);
5472 			operational = bf_get(lpfc_sli_misconfigured_port3_op,
5473 					&misconfigured->theEvent);
5474 			break;
5475 		default:
5476 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5477 					"3296 "
5478 					"LPFC_SLI_EVENT_TYPE_MISCONFIGURED "
5479 					"event: Invalid link %d",
5480 					phba->sli4_hba.lnk_info.lnk_no);
5481 			return;
5482 		}
5483 
5484 		/* Skip if optic state unchanged */
5485 		if (phba->sli4_hba.lnk_info.optic_state == status)
5486 			return;
5487 
5488 		switch (status) {
5489 		case LPFC_SLI_EVENT_STATUS_VALID:
5490 			sprintf(message, "Physical Link is functional");
5491 			break;
5492 		case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
5493 			sprintf(message, "Optics faulted/incorrectly "
5494 				"installed/not installed - Reseat optics, "
5495 				"if issue not resolved, replace.");
5496 			break;
5497 		case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
5498 			sprintf(message,
5499 				"Optics of two types installed - Remove one "
5500 				"optic or install matching pair of optics.");
5501 			break;
5502 		case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
5503 			sprintf(message, "Incompatible optics - Replace with "
5504 				"compatible optics for card to function.");
5505 			break;
5506 		case LPFC_SLI_EVENT_STATUS_UNQUALIFIED:
5507 			sprintf(message, "Unqualified optics - Replace with "
5508 				"Avago optics for Warranty and Technical "
5509 				"Support - Link is%s operational",
5510 				(operational) ? " not" : "");
5511 			break;
5512 		case LPFC_SLI_EVENT_STATUS_UNCERTIFIED:
5513 			sprintf(message, "Uncertified optics - Replace with "
5514 				"Avago-certified optics to enable link "
5515 				"operation - Link is%s operational",
5516 				(operational) ? " not" : "");
5517 			break;
5518 		default:
5519 			/* firmware is reporting a status we don't know about */
5520 			sprintf(message, "Unknown event status x%02x", status);
5521 			break;
5522 		}
5523 
5524 		/* Issue READ_CONFIG mbox command to refresh supported speeds */
5525 		rc = lpfc_sli4_read_config(phba);
5526 		if (rc) {
5527 			phba->lmt = 0;
5528 			lpfc_printf_log(phba, KERN_ERR,
5529 					LOG_TRACE_EVENT,
5530 					"3194 Unable to retrieve supported "
5531 					"speeds, rc = 0x%x\n", rc);
5532 		}
5533 		vports = lpfc_create_vport_work_array(phba);
5534 		if (vports != NULL) {
5535 			for (i = 0; i <= phba->max_vports && vports[i] != NULL;
5536 					i++) {
5537 				shost = lpfc_shost_from_vport(vports[i]);
5538 				lpfc_host_supported_speeds_set(shost);
5539 			}
5540 		}
5541 		lpfc_destroy_vport_work_array(phba, vports);
5542 
5543 		phba->sli4_hba.lnk_info.optic_state = status;
5544 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5545 				"3176 Port Name %c %s\n", port_name, message);
5546 		break;
5547 	case LPFC_SLI_EVENT_TYPE_REMOTE_DPORT:
5548 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5549 				"3192 Remote DPort Test Initiated - "
5550 				"Event Data1:x%08x Event Data2: x%08x\n",
5551 				acqe_sli->event_data1, acqe_sli->event_data2);
5552 		break;
5553 	case LPFC_SLI_EVENT_TYPE_MISCONF_FAWWN:
5554 		/* Misconfigured WWN. Reports that the SLI Port is configured
5555 		 * to use FA-WWN, but the attached device doesn’t support it.
5556 		 * No driver action is required.
5557 		 * Event Data1 - N.A, Event Data2 - N.A
5558 		 */
5559 		lpfc_log_msg(phba, KERN_WARNING, LOG_SLI,
5560 			     "2699 Misconfigured FA-WWN - Attached device does "
5561 			     "not support FA-WWN\n");
5562 		break;
5563 	case LPFC_SLI_EVENT_TYPE_EEPROM_FAILURE:
5564 		/* EEPROM failure. No driver action is required */
5565 		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
5566 			     "2518 EEPROM failure - "
5567 			     "Event Data1: x%08x Event Data2: x%08x\n",
5568 			     acqe_sli->event_data1, acqe_sli->event_data2);
5569 		break;
5570 	default:
5571 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5572 				"3193 Unrecognized SLI event, type: 0x%x",
5573 				evt_type);
5574 		break;
5575 	}
5576 }
5577 
5578 /**
5579  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
5580  * @vport: pointer to vport data structure.
5581  *
5582  * This routine is to perform Clear Virtual Link (CVL) on a vport in
5583  * response to a CVL event.
5584  *
5585  * Return the pointer to the ndlp with the vport if successful, otherwise
5586  * return NULL.
5587  **/
5588 static struct lpfc_nodelist *
5589 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
5590 {
5591 	struct lpfc_nodelist *ndlp;
5592 	struct Scsi_Host *shost;
5593 	struct lpfc_hba *phba;
5594 
5595 	if (!vport)
5596 		return NULL;
5597 	phba = vport->phba;
5598 	if (!phba)
5599 		return NULL;
5600 	ndlp = lpfc_findnode_did(vport, Fabric_DID);
5601 	if (!ndlp) {
5602 		/* Cannot find existing Fabric ndlp, so allocate a new one */
5603 		ndlp = lpfc_nlp_init(vport, Fabric_DID);
5604 		if (!ndlp)
5605 			return 0;
5606 		/* Set the node type */
5607 		ndlp->nlp_type |= NLP_FABRIC;
5608 		/* Put ndlp onto node list */
5609 		lpfc_enqueue_node(vport, ndlp);
5610 	} else if (!NLP_CHK_NODE_ACT(ndlp)) {
5611 		/* re-setup ndlp without removing from node list */
5612 		ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
5613 		if (!ndlp)
5614 			return 0;
5615 	}
5616 	if ((phba->pport->port_state < LPFC_FLOGI) &&
5617 		(phba->pport->port_state != LPFC_VPORT_FAILED))
5618 		return NULL;
5619 	/* If virtual link is not yet instantiated ignore CVL */
5620 	if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
5621 		&& (vport->port_state != LPFC_VPORT_FAILED))
5622 		return NULL;
5623 	shost = lpfc_shost_from_vport(vport);
5624 	if (!shost)
5625 		return NULL;
5626 	lpfc_linkdown_port(vport);
5627 	lpfc_cleanup_pending_mbox(vport);
5628 	spin_lock_irq(shost->host_lock);
5629 	vport->fc_flag |= FC_VPORT_CVL_RCVD;
5630 	spin_unlock_irq(shost->host_lock);
5631 
5632 	return ndlp;
5633 }
5634 
5635 /**
5636  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
5637  * @phba: pointer to lpfc hba data structure.
5638  *
5639  * This routine is to perform Clear Virtual Link (CVL) on all vports in
5640  * response to a FCF dead event.
5641  **/
5642 static void
5643 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
5644 {
5645 	struct lpfc_vport **vports;
5646 	int i;
5647 
5648 	vports = lpfc_create_vport_work_array(phba);
5649 	if (vports)
5650 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
5651 			lpfc_sli4_perform_vport_cvl(vports[i]);
5652 	lpfc_destroy_vport_work_array(phba, vports);
5653 }
5654 
5655 /**
5656  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
5657  * @phba: pointer to lpfc hba data structure.
5658  * @acqe_fip: pointer to the async fcoe completion queue entry.
5659  *
5660  * This routine is to handle the SLI4 asynchronous fcoe event.
5661  **/
5662 static void
5663 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
5664 			struct lpfc_acqe_fip *acqe_fip)
5665 {
5666 	uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
5667 	int rc;
5668 	struct lpfc_vport *vport;
5669 	struct lpfc_nodelist *ndlp;
5670 	struct Scsi_Host  *shost;
5671 	int active_vlink_present;
5672 	struct lpfc_vport **vports;
5673 	int i;
5674 
5675 	phba->fc_eventTag = acqe_fip->event_tag;
5676 	phba->fcoe_eventtag = acqe_fip->event_tag;
5677 	switch (event_type) {
5678 	case LPFC_FIP_EVENT_TYPE_NEW_FCF:
5679 	case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
5680 		if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
5681 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5682 					"2546 New FCF event, evt_tag:x%x, "
5683 					"index:x%x\n",
5684 					acqe_fip->event_tag,
5685 					acqe_fip->index);
5686 		else
5687 			lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
5688 					LOG_DISCOVERY,
5689 					"2788 FCF param modified event, "
5690 					"evt_tag:x%x, index:x%x\n",
5691 					acqe_fip->event_tag,
5692 					acqe_fip->index);
5693 		if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5694 			/*
5695 			 * During period of FCF discovery, read the FCF
5696 			 * table record indexed by the event to update
5697 			 * FCF roundrobin failover eligible FCF bmask.
5698 			 */
5699 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
5700 					LOG_DISCOVERY,
5701 					"2779 Read FCF (x%x) for updating "
5702 					"roundrobin FCF failover bmask\n",
5703 					acqe_fip->index);
5704 			rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
5705 		}
5706 
5707 		/* If the FCF discovery is in progress, do nothing. */
5708 		spin_lock_irq(&phba->hbalock);
5709 		if (phba->hba_flag & FCF_TS_INPROG) {
5710 			spin_unlock_irq(&phba->hbalock);
5711 			break;
5712 		}
5713 		/* If fast FCF failover rescan event is pending, do nothing */
5714 		if (phba->fcf.fcf_flag & (FCF_REDISC_EVT | FCF_REDISC_PEND)) {
5715 			spin_unlock_irq(&phba->hbalock);
5716 			break;
5717 		}
5718 
5719 		/* If the FCF has been in discovered state, do nothing. */
5720 		if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
5721 			spin_unlock_irq(&phba->hbalock);
5722 			break;
5723 		}
5724 		spin_unlock_irq(&phba->hbalock);
5725 
5726 		/* Otherwise, scan the entire FCF table and re-discover SAN */
5727 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5728 				"2770 Start FCF table scan per async FCF "
5729 				"event, evt_tag:x%x, index:x%x\n",
5730 				acqe_fip->event_tag, acqe_fip->index);
5731 		rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
5732 						     LPFC_FCOE_FCF_GET_FIRST);
5733 		if (rc)
5734 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5735 					"2547 Issue FCF scan read FCF mailbox "
5736 					"command failed (x%x)\n", rc);
5737 		break;
5738 
5739 	case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
5740 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5741 				"2548 FCF Table full count 0x%x tag 0x%x\n",
5742 				bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
5743 				acqe_fip->event_tag);
5744 		break;
5745 
5746 	case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
5747 		phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
5748 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5749 				"2549 FCF (x%x) disconnected from network, "
5750 				 "tag:x%x\n", acqe_fip->index,
5751 				 acqe_fip->event_tag);
5752 		/*
5753 		 * If we are in the middle of FCF failover process, clear
5754 		 * the corresponding FCF bit in the roundrobin bitmap.
5755 		 */
5756 		spin_lock_irq(&phba->hbalock);
5757 		if ((phba->fcf.fcf_flag & FCF_DISCOVERY) &&
5758 		    (phba->fcf.current_rec.fcf_indx != acqe_fip->index)) {
5759 			spin_unlock_irq(&phba->hbalock);
5760 			/* Update FLOGI FCF failover eligible FCF bmask */
5761 			lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
5762 			break;
5763 		}
5764 		spin_unlock_irq(&phba->hbalock);
5765 
5766 		/* If the event is not for currently used fcf do nothing */
5767 		if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
5768 			break;
5769 
5770 		/*
5771 		 * Otherwise, request the port to rediscover the entire FCF
5772 		 * table for a fast recovery from case that the current FCF
5773 		 * is no longer valid as we are not in the middle of FCF
5774 		 * failover process already.
5775 		 */
5776 		spin_lock_irq(&phba->hbalock);
5777 		/* Mark the fast failover process in progress */
5778 		phba->fcf.fcf_flag |= FCF_DEAD_DISC;
5779 		spin_unlock_irq(&phba->hbalock);
5780 
5781 		lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
5782 				"2771 Start FCF fast failover process due to "
5783 				"FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
5784 				"\n", acqe_fip->event_tag, acqe_fip->index);
5785 		rc = lpfc_sli4_redisc_fcf_table(phba);
5786 		if (rc) {
5787 			lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5788 					LOG_TRACE_EVENT,
5789 					"2772 Issue FCF rediscover mailbox "
5790 					"command failed, fail through to FCF "
5791 					"dead event\n");
5792 			spin_lock_irq(&phba->hbalock);
5793 			phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
5794 			spin_unlock_irq(&phba->hbalock);
5795 			/*
5796 			 * Last resort will fail over by treating this
5797 			 * as a link down to FCF registration.
5798 			 */
5799 			lpfc_sli4_fcf_dead_failthrough(phba);
5800 		} else {
5801 			/* Reset FCF roundrobin bmask for new discovery */
5802 			lpfc_sli4_clear_fcf_rr_bmask(phba);
5803 			/*
5804 			 * Handling fast FCF failover to a DEAD FCF event is
5805 			 * considered equalivant to receiving CVL to all vports.
5806 			 */
5807 			lpfc_sli4_perform_all_vport_cvl(phba);
5808 		}
5809 		break;
5810 	case LPFC_FIP_EVENT_TYPE_CVL:
5811 		phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
5812 		lpfc_printf_log(phba, KERN_ERR,
5813 				LOG_TRACE_EVENT,
5814 			"2718 Clear Virtual Link Received for VPI 0x%x"
5815 			" tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
5816 
5817 		vport = lpfc_find_vport_by_vpid(phba,
5818 						acqe_fip->index);
5819 		ndlp = lpfc_sli4_perform_vport_cvl(vport);
5820 		if (!ndlp)
5821 			break;
5822 		active_vlink_present = 0;
5823 
5824 		vports = lpfc_create_vport_work_array(phba);
5825 		if (vports) {
5826 			for (i = 0; i <= phba->max_vports && vports[i] != NULL;
5827 					i++) {
5828 				if ((!(vports[i]->fc_flag &
5829 					FC_VPORT_CVL_RCVD)) &&
5830 					(vports[i]->port_state > LPFC_FDISC)) {
5831 					active_vlink_present = 1;
5832 					break;
5833 				}
5834 			}
5835 			lpfc_destroy_vport_work_array(phba, vports);
5836 		}
5837 
5838 		/*
5839 		 * Don't re-instantiate if vport is marked for deletion.
5840 		 * If we are here first then vport_delete is going to wait
5841 		 * for discovery to complete.
5842 		 */
5843 		if (!(vport->load_flag & FC_UNLOADING) &&
5844 					active_vlink_present) {
5845 			/*
5846 			 * If there are other active VLinks present,
5847 			 * re-instantiate the Vlink using FDISC.
5848 			 */
5849 			mod_timer(&ndlp->nlp_delayfunc,
5850 				  jiffies + msecs_to_jiffies(1000));
5851 			shost = lpfc_shost_from_vport(vport);
5852 			spin_lock_irq(shost->host_lock);
5853 			ndlp->nlp_flag |= NLP_DELAY_TMO;
5854 			spin_unlock_irq(shost->host_lock);
5855 			ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
5856 			vport->port_state = LPFC_FDISC;
5857 		} else {
5858 			/*
5859 			 * Otherwise, we request port to rediscover
5860 			 * the entire FCF table for a fast recovery
5861 			 * from possible case that the current FCF
5862 			 * is no longer valid if we are not already
5863 			 * in the FCF failover process.
5864 			 */
5865 			spin_lock_irq(&phba->hbalock);
5866 			if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
5867 				spin_unlock_irq(&phba->hbalock);
5868 				break;
5869 			}
5870 			/* Mark the fast failover process in progress */
5871 			phba->fcf.fcf_flag |= FCF_ACVL_DISC;
5872 			spin_unlock_irq(&phba->hbalock);
5873 			lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
5874 					LOG_DISCOVERY,
5875 					"2773 Start FCF failover per CVL, "
5876 					"evt_tag:x%x\n", acqe_fip->event_tag);
5877 			rc = lpfc_sli4_redisc_fcf_table(phba);
5878 			if (rc) {
5879 				lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
5880 						LOG_TRACE_EVENT,
5881 						"2774 Issue FCF rediscover "
5882 						"mailbox command failed, "
5883 						"through to CVL event\n");
5884 				spin_lock_irq(&phba->hbalock);
5885 				phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
5886 				spin_unlock_irq(&phba->hbalock);
5887 				/*
5888 				 * Last resort will be re-try on the
5889 				 * the current registered FCF entry.
5890 				 */
5891 				lpfc_retry_pport_discovery(phba);
5892 			} else
5893 				/*
5894 				 * Reset FCF roundrobin bmask for new
5895 				 * discovery.
5896 				 */
5897 				lpfc_sli4_clear_fcf_rr_bmask(phba);
5898 		}
5899 		break;
5900 	default:
5901 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5902 				"0288 Unknown FCoE event type 0x%x event tag "
5903 				"0x%x\n", event_type, acqe_fip->event_tag);
5904 		break;
5905 	}
5906 }
5907 
5908 /**
5909  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
5910  * @phba: pointer to lpfc hba data structure.
5911  * @acqe_dcbx: pointer to the async dcbx completion queue entry.
5912  *
5913  * This routine is to handle the SLI4 asynchronous dcbx event.
5914  **/
5915 static void
5916 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
5917 			 struct lpfc_acqe_dcbx *acqe_dcbx)
5918 {
5919 	phba->fc_eventTag = acqe_dcbx->event_tag;
5920 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
5921 			"0290 The SLI4 DCBX asynchronous event is not "
5922 			"handled yet\n");
5923 }
5924 
5925 /**
5926  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
5927  * @phba: pointer to lpfc hba data structure.
5928  * @acqe_grp5: pointer to the async grp5 completion queue entry.
5929  *
5930  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
5931  * is an asynchronous notified of a logical link speed change.  The Port
5932  * reports the logical link speed in units of 10Mbps.
5933  **/
5934 static void
5935 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
5936 			 struct lpfc_acqe_grp5 *acqe_grp5)
5937 {
5938 	uint16_t prev_ll_spd;
5939 
5940 	phba->fc_eventTag = acqe_grp5->event_tag;
5941 	phba->fcoe_eventtag = acqe_grp5->event_tag;
5942 	prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
5943 	phba->sli4_hba.link_state.logical_speed =
5944 		(bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
5945 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5946 			"2789 GRP5 Async Event: Updating logical link speed "
5947 			"from %dMbps to %dMbps\n", prev_ll_spd,
5948 			phba->sli4_hba.link_state.logical_speed);
5949 }
5950 
5951 /**
5952  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
5953  * @phba: pointer to lpfc hba data structure.
5954  *
5955  * This routine is invoked by the worker thread to process all the pending
5956  * SLI4 asynchronous events.
5957  **/
5958 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
5959 {
5960 	struct lpfc_cq_event *cq_event;
5961 
5962 	/* First, declare the async event has been handled */
5963 	spin_lock_irq(&phba->hbalock);
5964 	phba->hba_flag &= ~ASYNC_EVENT;
5965 	spin_unlock_irq(&phba->hbalock);
5966 	/* Now, handle all the async events */
5967 	while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
5968 		/* Get the first event from the head of the event queue */
5969 		spin_lock_irq(&phba->hbalock);
5970 		list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
5971 				 cq_event, struct lpfc_cq_event, list);
5972 		spin_unlock_irq(&phba->hbalock);
5973 		/* Process the asynchronous event */
5974 		switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
5975 		case LPFC_TRAILER_CODE_LINK:
5976 			lpfc_sli4_async_link_evt(phba,
5977 						 &cq_event->cqe.acqe_link);
5978 			break;
5979 		case LPFC_TRAILER_CODE_FCOE:
5980 			lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
5981 			break;
5982 		case LPFC_TRAILER_CODE_DCBX:
5983 			lpfc_sli4_async_dcbx_evt(phba,
5984 						 &cq_event->cqe.acqe_dcbx);
5985 			break;
5986 		case LPFC_TRAILER_CODE_GRP5:
5987 			lpfc_sli4_async_grp5_evt(phba,
5988 						 &cq_event->cqe.acqe_grp5);
5989 			break;
5990 		case LPFC_TRAILER_CODE_FC:
5991 			lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
5992 			break;
5993 		case LPFC_TRAILER_CODE_SLI:
5994 			lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
5995 			break;
5996 		default:
5997 			lpfc_printf_log(phba, KERN_ERR,
5998 					LOG_TRACE_EVENT,
5999 					"1804 Invalid asynchronous event code: "
6000 					"x%x\n", bf_get(lpfc_trailer_code,
6001 					&cq_event->cqe.mcqe_cmpl));
6002 			break;
6003 		}
6004 		/* Free the completion event processed to the free pool */
6005 		lpfc_sli4_cq_event_release(phba, cq_event);
6006 	}
6007 }
6008 
6009 /**
6010  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
6011  * @phba: pointer to lpfc hba data structure.
6012  *
6013  * This routine is invoked by the worker thread to process FCF table
6014  * rediscovery pending completion event.
6015  **/
6016 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
6017 {
6018 	int rc;
6019 
6020 	spin_lock_irq(&phba->hbalock);
6021 	/* Clear FCF rediscovery timeout event */
6022 	phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
6023 	/* Clear driver fast failover FCF record flag */
6024 	phba->fcf.failover_rec.flag = 0;
6025 	/* Set state for FCF fast failover */
6026 	phba->fcf.fcf_flag |= FCF_REDISC_FOV;
6027 	spin_unlock_irq(&phba->hbalock);
6028 
6029 	/* Scan FCF table from the first entry to re-discover SAN */
6030 	lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
6031 			"2777 Start post-quiescent FCF table scan\n");
6032 	rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
6033 	if (rc)
6034 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6035 				"2747 Issue FCF scan read FCF mailbox "
6036 				"command failed 0x%x\n", rc);
6037 }
6038 
6039 /**
6040  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
6041  * @phba: pointer to lpfc hba data structure.
6042  * @dev_grp: The HBA PCI-Device group number.
6043  *
6044  * This routine is invoked to set up the per HBA PCI-Device group function
6045  * API jump table entries.
6046  *
6047  * Return: 0 if success, otherwise -ENODEV
6048  **/
6049 int
6050 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
6051 {
6052 	int rc;
6053 
6054 	/* Set up lpfc PCI-device group */
6055 	phba->pci_dev_grp = dev_grp;
6056 
6057 	/* The LPFC_PCI_DEV_OC uses SLI4 */
6058 	if (dev_grp == LPFC_PCI_DEV_OC)
6059 		phba->sli_rev = LPFC_SLI_REV4;
6060 
6061 	/* Set up device INIT API function jump table */
6062 	rc = lpfc_init_api_table_setup(phba, dev_grp);
6063 	if (rc)
6064 		return -ENODEV;
6065 	/* Set up SCSI API function jump table */
6066 	rc = lpfc_scsi_api_table_setup(phba, dev_grp);
6067 	if (rc)
6068 		return -ENODEV;
6069 	/* Set up SLI API function jump table */
6070 	rc = lpfc_sli_api_table_setup(phba, dev_grp);
6071 	if (rc)
6072 		return -ENODEV;
6073 	/* Set up MBOX API function jump table */
6074 	rc = lpfc_mbox_api_table_setup(phba, dev_grp);
6075 	if (rc)
6076 		return -ENODEV;
6077 
6078 	return 0;
6079 }
6080 
6081 /**
6082  * lpfc_log_intr_mode - Log the active interrupt mode
6083  * @phba: pointer to lpfc hba data structure.
6084  * @intr_mode: active interrupt mode adopted.
6085  *
6086  * This routine it invoked to log the currently used active interrupt mode
6087  * to the device.
6088  **/
6089 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
6090 {
6091 	switch (intr_mode) {
6092 	case 0:
6093 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6094 				"0470 Enable INTx interrupt mode.\n");
6095 		break;
6096 	case 1:
6097 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6098 				"0481 Enabled MSI interrupt mode.\n");
6099 		break;
6100 	case 2:
6101 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6102 				"0480 Enabled MSI-X interrupt mode.\n");
6103 		break;
6104 	default:
6105 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6106 				"0482 Illegal interrupt mode.\n");
6107 		break;
6108 	}
6109 	return;
6110 }
6111 
6112 /**
6113  * lpfc_enable_pci_dev - Enable a generic PCI device.
6114  * @phba: pointer to lpfc hba data structure.
6115  *
6116  * This routine is invoked to enable the PCI device that is common to all
6117  * PCI devices.
6118  *
6119  * Return codes
6120  * 	0 - successful
6121  * 	other values - error
6122  **/
6123 static int
6124 lpfc_enable_pci_dev(struct lpfc_hba *phba)
6125 {
6126 	struct pci_dev *pdev;
6127 
6128 	/* Obtain PCI device reference */
6129 	if (!phba->pcidev)
6130 		goto out_error;
6131 	else
6132 		pdev = phba->pcidev;
6133 	/* Enable PCI device */
6134 	if (pci_enable_device_mem(pdev))
6135 		goto out_error;
6136 	/* Request PCI resource for the device */
6137 	if (pci_request_mem_regions(pdev, LPFC_DRIVER_NAME))
6138 		goto out_disable_device;
6139 	/* Set up device as PCI master and save state for EEH */
6140 	pci_set_master(pdev);
6141 	pci_try_set_mwi(pdev);
6142 	pci_save_state(pdev);
6143 
6144 	/* PCIe EEH recovery on powerpc platforms needs fundamental reset */
6145 	if (pci_is_pcie(pdev))
6146 		pdev->needs_freset = 1;
6147 
6148 	return 0;
6149 
6150 out_disable_device:
6151 	pci_disable_device(pdev);
6152 out_error:
6153 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6154 			"1401 Failed to enable pci device\n");
6155 	return -ENODEV;
6156 }
6157 
6158 /**
6159  * lpfc_disable_pci_dev - Disable a generic PCI device.
6160  * @phba: pointer to lpfc hba data structure.
6161  *
6162  * This routine is invoked to disable the PCI device that is common to all
6163  * PCI devices.
6164  **/
6165 static void
6166 lpfc_disable_pci_dev(struct lpfc_hba *phba)
6167 {
6168 	struct pci_dev *pdev;
6169 
6170 	/* Obtain PCI device reference */
6171 	if (!phba->pcidev)
6172 		return;
6173 	else
6174 		pdev = phba->pcidev;
6175 	/* Release PCI resource and disable PCI device */
6176 	pci_release_mem_regions(pdev);
6177 	pci_disable_device(pdev);
6178 
6179 	return;
6180 }
6181 
6182 /**
6183  * lpfc_reset_hba - Reset a hba
6184  * @phba: pointer to lpfc hba data structure.
6185  *
6186  * This routine is invoked to reset a hba device. It brings the HBA
6187  * offline, performs a board restart, and then brings the board back
6188  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
6189  * on outstanding mailbox commands.
6190  **/
6191 void
6192 lpfc_reset_hba(struct lpfc_hba *phba)
6193 {
6194 	/* If resets are disabled then set error state and return. */
6195 	if (!phba->cfg_enable_hba_reset) {
6196 		phba->link_state = LPFC_HBA_ERROR;
6197 		return;
6198 	}
6199 	if (phba->sli.sli_flag & LPFC_SLI_ACTIVE)
6200 		lpfc_offline_prep(phba, LPFC_MBX_WAIT);
6201 	else
6202 		lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
6203 	lpfc_offline(phba);
6204 	lpfc_sli_brdrestart(phba);
6205 	lpfc_online(phba);
6206 	lpfc_unblock_mgmt_io(phba);
6207 }
6208 
6209 /**
6210  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
6211  * @phba: pointer to lpfc hba data structure.
6212  *
6213  * This function enables the PCI SR-IOV virtual functions to a physical
6214  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
6215  * enable the number of virtual functions to the physical function. As
6216  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
6217  * API call does not considered as an error condition for most of the device.
6218  **/
6219 uint16_t
6220 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
6221 {
6222 	struct pci_dev *pdev = phba->pcidev;
6223 	uint16_t nr_virtfn;
6224 	int pos;
6225 
6226 	pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
6227 	if (pos == 0)
6228 		return 0;
6229 
6230 	pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
6231 	return nr_virtfn;
6232 }
6233 
6234 /**
6235  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
6236  * @phba: pointer to lpfc hba data structure.
6237  * @nr_vfn: number of virtual functions to be enabled.
6238  *
6239  * This function enables the PCI SR-IOV virtual functions to a physical
6240  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
6241  * enable the number of virtual functions to the physical function. As
6242  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
6243  * API call does not considered as an error condition for most of the device.
6244  **/
6245 int
6246 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
6247 {
6248 	struct pci_dev *pdev = phba->pcidev;
6249 	uint16_t max_nr_vfn;
6250 	int rc;
6251 
6252 	max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
6253 	if (nr_vfn > max_nr_vfn) {
6254 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6255 				"3057 Requested vfs (%d) greater than "
6256 				"supported vfs (%d)", nr_vfn, max_nr_vfn);
6257 		return -EINVAL;
6258 	}
6259 
6260 	rc = pci_enable_sriov(pdev, nr_vfn);
6261 	if (rc) {
6262 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6263 				"2806 Failed to enable sriov on this device "
6264 				"with vfn number nr_vf:%d, rc:%d\n",
6265 				nr_vfn, rc);
6266 	} else
6267 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6268 				"2807 Successful enable sriov on this device "
6269 				"with vfn number nr_vf:%d\n", nr_vfn);
6270 	return rc;
6271 }
6272 
6273 /**
6274  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
6275  * @phba: pointer to lpfc hba data structure.
6276  *
6277  * This routine is invoked to set up the driver internal resources before the
6278  * device specific resource setup to support the HBA device it attached to.
6279  *
6280  * Return codes
6281  *	0 - successful
6282  *	other values - error
6283  **/
6284 static int
6285 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
6286 {
6287 	struct lpfc_sli *psli = &phba->sli;
6288 
6289 	/*
6290 	 * Driver resources common to all SLI revisions
6291 	 */
6292 	atomic_set(&phba->fast_event_count, 0);
6293 	atomic_set(&phba->dbg_log_idx, 0);
6294 	atomic_set(&phba->dbg_log_cnt, 0);
6295 	atomic_set(&phba->dbg_log_dmping, 0);
6296 	spin_lock_init(&phba->hbalock);
6297 
6298 	/* Initialize ndlp management spinlock */
6299 	spin_lock_init(&phba->ndlp_lock);
6300 
6301 	/* Initialize port_list spinlock */
6302 	spin_lock_init(&phba->port_list_lock);
6303 	INIT_LIST_HEAD(&phba->port_list);
6304 
6305 	INIT_LIST_HEAD(&phba->work_list);
6306 	init_waitqueue_head(&phba->wait_4_mlo_m_q);
6307 
6308 	/* Initialize the wait queue head for the kernel thread */
6309 	init_waitqueue_head(&phba->work_waitq);
6310 
6311 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6312 			"1403 Protocols supported %s %s %s\n",
6313 			((phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ?
6314 				"SCSI" : " "),
6315 			((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) ?
6316 				"NVME" : " "),
6317 			(phba->nvmet_support ? "NVMET" : " "));
6318 
6319 	/* Initialize the IO buffer list used by driver for SLI3 SCSI */
6320 	spin_lock_init(&phba->scsi_buf_list_get_lock);
6321 	INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_get);
6322 	spin_lock_init(&phba->scsi_buf_list_put_lock);
6323 	INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put);
6324 
6325 	/* Initialize the fabric iocb list */
6326 	INIT_LIST_HEAD(&phba->fabric_iocb_list);
6327 
6328 	/* Initialize list to save ELS buffers */
6329 	INIT_LIST_HEAD(&phba->elsbuf);
6330 
6331 	/* Initialize FCF connection rec list */
6332 	INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
6333 
6334 	/* Initialize OAS configuration list */
6335 	spin_lock_init(&phba->devicelock);
6336 	INIT_LIST_HEAD(&phba->luns);
6337 
6338 	/* MBOX heartbeat timer */
6339 	timer_setup(&psli->mbox_tmo, lpfc_mbox_timeout, 0);
6340 	/* Fabric block timer */
6341 	timer_setup(&phba->fabric_block_timer, lpfc_fabric_block_timeout, 0);
6342 	/* EA polling mode timer */
6343 	timer_setup(&phba->eratt_poll, lpfc_poll_eratt, 0);
6344 	/* Heartbeat timer */
6345 	timer_setup(&phba->hb_tmofunc, lpfc_hb_timeout, 0);
6346 
6347 	INIT_DELAYED_WORK(&phba->eq_delay_work, lpfc_hb_eq_delay_work);
6348 
6349 	INIT_DELAYED_WORK(&phba->idle_stat_delay_work,
6350 			  lpfc_idle_stat_delay_work);
6351 
6352 	return 0;
6353 }
6354 
6355 /**
6356  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev
6357  * @phba: pointer to lpfc hba data structure.
6358  *
6359  * This routine is invoked to set up the driver internal resources specific to
6360  * support the SLI-3 HBA device it attached to.
6361  *
6362  * Return codes
6363  * 0 - successful
6364  * other values - error
6365  **/
6366 static int
6367 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
6368 {
6369 	int rc, entry_sz;
6370 
6371 	/*
6372 	 * Initialize timers used by driver
6373 	 */
6374 
6375 	/* FCP polling mode timer */
6376 	timer_setup(&phba->fcp_poll_timer, lpfc_poll_timeout, 0);
6377 
6378 	/* Host attention work mask setup */
6379 	phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
6380 	phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
6381 
6382 	/* Get all the module params for configuring this host */
6383 	lpfc_get_cfgparam(phba);
6384 	/* Set up phase-1 common device driver resources */
6385 
6386 	rc = lpfc_setup_driver_resource_phase1(phba);
6387 	if (rc)
6388 		return -ENODEV;
6389 
6390 	if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
6391 		phba->menlo_flag |= HBA_MENLO_SUPPORT;
6392 		/* check for menlo minimum sg count */
6393 		if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
6394 			phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
6395 	}
6396 
6397 	if (!phba->sli.sli3_ring)
6398 		phba->sli.sli3_ring = kcalloc(LPFC_SLI3_MAX_RING,
6399 					      sizeof(struct lpfc_sli_ring),
6400 					      GFP_KERNEL);
6401 	if (!phba->sli.sli3_ring)
6402 		return -ENOMEM;
6403 
6404 	/*
6405 	 * Since lpfc_sg_seg_cnt is module parameter, the sg_dma_buf_size
6406 	 * used to create the sg_dma_buf_pool must be dynamically calculated.
6407 	 */
6408 
6409 	if (phba->sli_rev == LPFC_SLI_REV4)
6410 		entry_sz = sizeof(struct sli4_sge);
6411 	else
6412 		entry_sz = sizeof(struct ulp_bde64);
6413 
6414 	/* There are going to be 2 reserved BDEs: 1 FCP cmnd + 1 FCP rsp */
6415 	if (phba->cfg_enable_bg) {
6416 		/*
6417 		 * The scsi_buf for a T10-DIF I/O will hold the FCP cmnd,
6418 		 * the FCP rsp, and a BDE for each. Sice we have no control
6419 		 * over how many protection data segments the SCSI Layer
6420 		 * will hand us (ie: there could be one for every block
6421 		 * in the IO), we just allocate enough BDEs to accomidate
6422 		 * our max amount and we need to limit lpfc_sg_seg_cnt to
6423 		 * minimize the risk of running out.
6424 		 */
6425 		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6426 			sizeof(struct fcp_rsp) +
6427 			(LPFC_MAX_SG_SEG_CNT * entry_sz);
6428 
6429 		if (phba->cfg_sg_seg_cnt > LPFC_MAX_SG_SEG_CNT_DIF)
6430 			phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT_DIF;
6431 
6432 		/* Total BDEs in BPL for scsi_sg_list and scsi_sg_prot_list */
6433 		phba->cfg_total_seg_cnt = LPFC_MAX_SG_SEG_CNT;
6434 	} else {
6435 		/*
6436 		 * The scsi_buf for a regular I/O will hold the FCP cmnd,
6437 		 * the FCP rsp, a BDE for each, and a BDE for up to
6438 		 * cfg_sg_seg_cnt data segments.
6439 		 */
6440 		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6441 			sizeof(struct fcp_rsp) +
6442 			((phba->cfg_sg_seg_cnt + 2) * entry_sz);
6443 
6444 		/* Total BDEs in BPL for scsi_sg_list */
6445 		phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + 2;
6446 	}
6447 
6448 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
6449 			"9088 INIT sg_tablesize:%d dmabuf_size:%d total_bde:%d\n",
6450 			phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
6451 			phba->cfg_total_seg_cnt);
6452 
6453 	phba->max_vpi = LPFC_MAX_VPI;
6454 	/* This will be set to correct value after config_port mbox */
6455 	phba->max_vports = 0;
6456 
6457 	/*
6458 	 * Initialize the SLI Layer to run with lpfc HBAs.
6459 	 */
6460 	lpfc_sli_setup(phba);
6461 	lpfc_sli_queue_init(phba);
6462 
6463 	/* Allocate device driver memory */
6464 	if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
6465 		return -ENOMEM;
6466 
6467 	phba->lpfc_sg_dma_buf_pool =
6468 		dma_pool_create("lpfc_sg_dma_buf_pool",
6469 				&phba->pcidev->dev, phba->cfg_sg_dma_buf_size,
6470 				BPL_ALIGN_SZ, 0);
6471 
6472 	if (!phba->lpfc_sg_dma_buf_pool)
6473 		goto fail_free_mem;
6474 
6475 	phba->lpfc_cmd_rsp_buf_pool =
6476 			dma_pool_create("lpfc_cmd_rsp_buf_pool",
6477 					&phba->pcidev->dev,
6478 					sizeof(struct fcp_cmnd) +
6479 					sizeof(struct fcp_rsp),
6480 					BPL_ALIGN_SZ, 0);
6481 
6482 	if (!phba->lpfc_cmd_rsp_buf_pool)
6483 		goto fail_free_dma_buf_pool;
6484 
6485 	/*
6486 	 * Enable sr-iov virtual functions if supported and configured
6487 	 * through the module parameter.
6488 	 */
6489 	if (phba->cfg_sriov_nr_virtfn > 0) {
6490 		rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
6491 						 phba->cfg_sriov_nr_virtfn);
6492 		if (rc) {
6493 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6494 					"2808 Requested number of SR-IOV "
6495 					"virtual functions (%d) is not "
6496 					"supported\n",
6497 					phba->cfg_sriov_nr_virtfn);
6498 			phba->cfg_sriov_nr_virtfn = 0;
6499 		}
6500 	}
6501 
6502 	return 0;
6503 
6504 fail_free_dma_buf_pool:
6505 	dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
6506 	phba->lpfc_sg_dma_buf_pool = NULL;
6507 fail_free_mem:
6508 	lpfc_mem_free(phba);
6509 	return -ENOMEM;
6510 }
6511 
6512 /**
6513  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
6514  * @phba: pointer to lpfc hba data structure.
6515  *
6516  * This routine is invoked to unset the driver internal resources set up
6517  * specific for supporting the SLI-3 HBA device it attached to.
6518  **/
6519 static void
6520 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
6521 {
6522 	/* Free device driver memory allocated */
6523 	lpfc_mem_free_all(phba);
6524 
6525 	return;
6526 }
6527 
6528 /**
6529  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
6530  * @phba: pointer to lpfc hba data structure.
6531  *
6532  * This routine is invoked to set up the driver internal resources specific to
6533  * support the SLI-4 HBA device it attached to.
6534  *
6535  * Return codes
6536  * 	0 - successful
6537  * 	other values - error
6538  **/
6539 static int
6540 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
6541 {
6542 	LPFC_MBOXQ_t *mboxq;
6543 	MAILBOX_t *mb;
6544 	int rc, i, max_buf_size;
6545 	uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
6546 	struct lpfc_mqe *mqe;
6547 	int longs;
6548 	int extra;
6549 	uint64_t wwn;
6550 	u32 if_type;
6551 	u32 if_fam;
6552 
6553 	phba->sli4_hba.num_present_cpu = lpfc_present_cpu;
6554 	phba->sli4_hba.num_possible_cpu = cpumask_last(cpu_possible_mask) + 1;
6555 	phba->sli4_hba.curr_disp_cpu = 0;
6556 
6557 	/* Get all the module params for configuring this host */
6558 	lpfc_get_cfgparam(phba);
6559 
6560 	/* Set up phase-1 common device driver resources */
6561 	rc = lpfc_setup_driver_resource_phase1(phba);
6562 	if (rc)
6563 		return -ENODEV;
6564 
6565 	/* Before proceed, wait for POST done and device ready */
6566 	rc = lpfc_sli4_post_status_check(phba);
6567 	if (rc)
6568 		return -ENODEV;
6569 
6570 	/* Allocate all driver workqueues here */
6571 
6572 	/* The lpfc_wq workqueue for deferred irq use */
6573 	phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);
6574 
6575 	/*
6576 	 * Initialize timers used by driver
6577 	 */
6578 
6579 	timer_setup(&phba->rrq_tmr, lpfc_rrq_timeout, 0);
6580 
6581 	/* FCF rediscover timer */
6582 	timer_setup(&phba->fcf.redisc_wait, lpfc_sli4_fcf_redisc_wait_tmo, 0);
6583 
6584 	/*
6585 	 * Control structure for handling external multi-buffer mailbox
6586 	 * command pass-through.
6587 	 */
6588 	memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
6589 		sizeof(struct lpfc_mbox_ext_buf_ctx));
6590 	INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
6591 
6592 	phba->max_vpi = LPFC_MAX_VPI;
6593 
6594 	/* This will be set to correct value after the read_config mbox */
6595 	phba->max_vports = 0;
6596 
6597 	/* Program the default value of vlan_id and fc_map */
6598 	phba->valid_vlan = 0;
6599 	phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
6600 	phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
6601 	phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
6602 
6603 	/*
6604 	 * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
6605 	 * we will associate a new ring, for each EQ/CQ/WQ tuple.
6606 	 * The WQ create will allocate the ring.
6607 	 */
6608 
6609 	/* Initialize buffer queue management fields */
6610 	INIT_LIST_HEAD(&phba->hbqs[LPFC_ELS_HBQ].hbq_buffer_list);
6611 	phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
6612 	phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
6613 
6614 	/*
6615 	 * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
6616 	 */
6617 	/* Initialize the Abort buffer list used by driver */
6618 	spin_lock_init(&phba->sli4_hba.abts_io_buf_list_lock);
6619 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_io_buf_list);
6620 
6621 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
6622 		/* Initialize the Abort nvme buffer list used by driver */
6623 		spin_lock_init(&phba->sli4_hba.abts_nvmet_buf_list_lock);
6624 		INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
6625 		INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_io_wait_list);
6626 		spin_lock_init(&phba->sli4_hba.t_active_list_lock);
6627 		INIT_LIST_HEAD(&phba->sli4_hba.t_active_ctx_list);
6628 	}
6629 
6630 	/* This abort list used by worker thread */
6631 	spin_lock_init(&phba->sli4_hba.sgl_list_lock);
6632 	spin_lock_init(&phba->sli4_hba.nvmet_io_wait_lock);
6633 
6634 	/*
6635 	 * Initialize driver internal slow-path work queues
6636 	 */
6637 
6638 	/* Driver internel slow-path CQ Event pool */
6639 	INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
6640 	/* Response IOCB work queue list */
6641 	INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
6642 	/* Asynchronous event CQ Event work queue list */
6643 	INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
6644 	/* Fast-path XRI aborted CQ Event work queue list */
6645 	INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
6646 	/* Slow-path XRI aborted CQ Event work queue list */
6647 	INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
6648 	/* Receive queue CQ Event work queue list */
6649 	INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
6650 
6651 	/* Initialize extent block lists. */
6652 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
6653 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
6654 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
6655 	INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
6656 
6657 	/* Initialize mboxq lists. If the early init routines fail
6658 	 * these lists need to be correctly initialized.
6659 	 */
6660 	INIT_LIST_HEAD(&phba->sli.mboxq);
6661 	INIT_LIST_HEAD(&phba->sli.mboxq_cmpl);
6662 
6663 	/* initialize optic_state to 0xFF */
6664 	phba->sli4_hba.lnk_info.optic_state = 0xff;
6665 
6666 	/* Allocate device driver memory */
6667 	rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
6668 	if (rc)
6669 		return -ENOMEM;
6670 
6671 	/* IF Type 2 ports get initialized now. */
6672 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
6673 	    LPFC_SLI_INTF_IF_TYPE_2) {
6674 		rc = lpfc_pci_function_reset(phba);
6675 		if (unlikely(rc)) {
6676 			rc = -ENODEV;
6677 			goto out_free_mem;
6678 		}
6679 		phba->temp_sensor_support = 1;
6680 	}
6681 
6682 	/* Create the bootstrap mailbox command */
6683 	rc = lpfc_create_bootstrap_mbox(phba);
6684 	if (unlikely(rc))
6685 		goto out_free_mem;
6686 
6687 	/* Set up the host's endian order with the device. */
6688 	rc = lpfc_setup_endian_order(phba);
6689 	if (unlikely(rc))
6690 		goto out_free_bsmbx;
6691 
6692 	/* Set up the hba's configuration parameters. */
6693 	rc = lpfc_sli4_read_config(phba);
6694 	if (unlikely(rc))
6695 		goto out_free_bsmbx;
6696 	rc = lpfc_mem_alloc_active_rrq_pool_s4(phba);
6697 	if (unlikely(rc))
6698 		goto out_free_bsmbx;
6699 
6700 	/* IF Type 0 ports get initialized now. */
6701 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
6702 	    LPFC_SLI_INTF_IF_TYPE_0) {
6703 		rc = lpfc_pci_function_reset(phba);
6704 		if (unlikely(rc))
6705 			goto out_free_bsmbx;
6706 	}
6707 
6708 	mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6709 						       GFP_KERNEL);
6710 	if (!mboxq) {
6711 		rc = -ENOMEM;
6712 		goto out_free_bsmbx;
6713 	}
6714 
6715 	/* Check for NVMET being configured */
6716 	phba->nvmet_support = 0;
6717 	if (lpfc_enable_nvmet_cnt) {
6718 
6719 		/* First get WWN of HBA instance */
6720 		lpfc_read_nv(phba, mboxq);
6721 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6722 		if (rc != MBX_SUCCESS) {
6723 			lpfc_printf_log(phba, KERN_ERR,
6724 					LOG_TRACE_EVENT,
6725 					"6016 Mailbox failed , mbxCmd x%x "
6726 					"READ_NV, mbxStatus x%x\n",
6727 					bf_get(lpfc_mqe_command, &mboxq->u.mqe),
6728 					bf_get(lpfc_mqe_status, &mboxq->u.mqe));
6729 			mempool_free(mboxq, phba->mbox_mem_pool);
6730 			rc = -EIO;
6731 			goto out_free_bsmbx;
6732 		}
6733 		mb = &mboxq->u.mb;
6734 		memcpy(&wwn, (char *)mb->un.varRDnvp.nodename,
6735 		       sizeof(uint64_t));
6736 		wwn = cpu_to_be64(wwn);
6737 		phba->sli4_hba.wwnn.u.name = wwn;
6738 		memcpy(&wwn, (char *)mb->un.varRDnvp.portname,
6739 		       sizeof(uint64_t));
6740 		/* wwn is WWPN of HBA instance */
6741 		wwn = cpu_to_be64(wwn);
6742 		phba->sli4_hba.wwpn.u.name = wwn;
6743 
6744 		/* Check to see if it matches any module parameter */
6745 		for (i = 0; i < lpfc_enable_nvmet_cnt; i++) {
6746 			if (wwn == lpfc_enable_nvmet[i]) {
6747 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
6748 				if (lpfc_nvmet_mem_alloc(phba))
6749 					break;
6750 
6751 				phba->nvmet_support = 1; /* a match */
6752 
6753 				lpfc_printf_log(phba, KERN_ERR,
6754 						LOG_TRACE_EVENT,
6755 						"6017 NVME Target %016llx\n",
6756 						wwn);
6757 #else
6758 				lpfc_printf_log(phba, KERN_ERR,
6759 						LOG_TRACE_EVENT,
6760 						"6021 Can't enable NVME Target."
6761 						" NVME_TARGET_FC infrastructure"
6762 						" is not in kernel\n");
6763 #endif
6764 				/* Not supported for NVMET */
6765 				phba->cfg_xri_rebalancing = 0;
6766 				if (phba->irq_chann_mode == NHT_MODE) {
6767 					phba->cfg_irq_chann =
6768 						phba->sli4_hba.num_present_cpu;
6769 					phba->cfg_hdw_queue =
6770 						phba->sli4_hba.num_present_cpu;
6771 					phba->irq_chann_mode = NORMAL_MODE;
6772 				}
6773 				break;
6774 			}
6775 		}
6776 	}
6777 
6778 	lpfc_nvme_mod_param_dep(phba);
6779 
6780 	/* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
6781 	lpfc_supported_pages(mboxq);
6782 	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6783 	if (!rc) {
6784 		mqe = &mboxq->u.mqe;
6785 		memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
6786 		       LPFC_MAX_SUPPORTED_PAGES);
6787 		for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
6788 			switch (pn_page[i]) {
6789 			case LPFC_SLI4_PARAMETERS:
6790 				phba->sli4_hba.pc_sli4_params.supported = 1;
6791 				break;
6792 			default:
6793 				break;
6794 			}
6795 		}
6796 		/* Read the port's SLI4 Parameters capabilities if supported. */
6797 		if (phba->sli4_hba.pc_sli4_params.supported)
6798 			rc = lpfc_pc_sli4_params_get(phba, mboxq);
6799 		if (rc) {
6800 			mempool_free(mboxq, phba->mbox_mem_pool);
6801 			rc = -EIO;
6802 			goto out_free_bsmbx;
6803 		}
6804 	}
6805 
6806 	/*
6807 	 * Get sli4 parameters that override parameters from Port capabilities.
6808 	 * If this call fails, it isn't critical unless the SLI4 parameters come
6809 	 * back in conflict.
6810 	 */
6811 	rc = lpfc_get_sli4_parameters(phba, mboxq);
6812 	if (rc) {
6813 		if_type = bf_get(lpfc_sli_intf_if_type,
6814 				 &phba->sli4_hba.sli_intf);
6815 		if_fam = bf_get(lpfc_sli_intf_sli_family,
6816 				&phba->sli4_hba.sli_intf);
6817 		if (phba->sli4_hba.extents_in_use &&
6818 		    phba->sli4_hba.rpi_hdrs_in_use) {
6819 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6820 					"2999 Unsupported SLI4 Parameters "
6821 					"Extents and RPI headers enabled.\n");
6822 			if (if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
6823 			    if_fam ==  LPFC_SLI_INTF_FAMILY_BE2) {
6824 				mempool_free(mboxq, phba->mbox_mem_pool);
6825 				rc = -EIO;
6826 				goto out_free_bsmbx;
6827 			}
6828 		}
6829 		if (!(if_type == LPFC_SLI_INTF_IF_TYPE_0 &&
6830 		      if_fam == LPFC_SLI_INTF_FAMILY_BE2)) {
6831 			mempool_free(mboxq, phba->mbox_mem_pool);
6832 			rc = -EIO;
6833 			goto out_free_bsmbx;
6834 		}
6835 	}
6836 
6837 	/*
6838 	 * 1 for cmd, 1 for rsp, NVME adds an extra one
6839 	 * for boundary conditions in its max_sgl_segment template.
6840 	 */
6841 	extra = 2;
6842 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
6843 		extra++;
6844 
6845 	/*
6846 	 * It doesn't matter what family our adapter is in, we are
6847 	 * limited to 2 Pages, 512 SGEs, for our SGL.
6848 	 * There are going to be 2 reserved SGEs: 1 FCP cmnd + 1 FCP rsp
6849 	 */
6850 	max_buf_size = (2 * SLI4_PAGE_SIZE);
6851 
6852 	/*
6853 	 * Since lpfc_sg_seg_cnt is module param, the sg_dma_buf_size
6854 	 * used to create the sg_dma_buf_pool must be calculated.
6855 	 */
6856 	if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) {
6857 		/* Both cfg_enable_bg and cfg_external_dif code paths */
6858 
6859 		/*
6860 		 * The scsi_buf for a T10-DIF I/O holds the FCP cmnd,
6861 		 * the FCP rsp, and a SGE. Sice we have no control
6862 		 * over how many protection segments the SCSI Layer
6863 		 * will hand us (ie: there could be one for every block
6864 		 * in the IO), just allocate enough SGEs to accomidate
6865 		 * our max amount and we need to limit lpfc_sg_seg_cnt
6866 		 * to minimize the risk of running out.
6867 		 */
6868 		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6869 				sizeof(struct fcp_rsp) + max_buf_size;
6870 
6871 		/* Total SGEs for scsi_sg_list and scsi_sg_prot_list */
6872 		phba->cfg_total_seg_cnt = LPFC_MAX_SGL_SEG_CNT;
6873 
6874 		/*
6875 		 * If supporting DIF, reduce the seg count for scsi to
6876 		 * allow room for the DIF sges.
6877 		 */
6878 		if (phba->cfg_enable_bg &&
6879 		    phba->cfg_sg_seg_cnt > LPFC_MAX_BG_SLI4_SEG_CNT_DIF)
6880 			phba->cfg_scsi_seg_cnt = LPFC_MAX_BG_SLI4_SEG_CNT_DIF;
6881 		else
6882 			phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
6883 
6884 	} else {
6885 		/*
6886 		 * The scsi_buf for a regular I/O holds the FCP cmnd,
6887 		 * the FCP rsp, a SGE for each, and a SGE for up to
6888 		 * cfg_sg_seg_cnt data segments.
6889 		 */
6890 		phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
6891 				sizeof(struct fcp_rsp) +
6892 				((phba->cfg_sg_seg_cnt + extra) *
6893 				sizeof(struct sli4_sge));
6894 
6895 		/* Total SGEs for scsi_sg_list */
6896 		phba->cfg_total_seg_cnt = phba->cfg_sg_seg_cnt + extra;
6897 		phba->cfg_scsi_seg_cnt = phba->cfg_sg_seg_cnt;
6898 
6899 		/*
6900 		 * NOTE: if (phba->cfg_sg_seg_cnt + extra) <= 256 we only
6901 		 * need to post 1 page for the SGL.
6902 		 */
6903 	}
6904 
6905 	if (phba->cfg_xpsgl && !phba->nvmet_support)
6906 		phba->cfg_sg_dma_buf_size = LPFC_DEFAULT_XPSGL_SIZE;
6907 	else if (phba->cfg_sg_dma_buf_size  <= LPFC_MIN_SG_SLI4_BUF_SZ)
6908 		phba->cfg_sg_dma_buf_size = LPFC_MIN_SG_SLI4_BUF_SZ;
6909 	else
6910 		phba->cfg_sg_dma_buf_size =
6911 				SLI4_PAGE_ALIGN(phba->cfg_sg_dma_buf_size);
6912 
6913 	phba->border_sge_num = phba->cfg_sg_dma_buf_size /
6914 			       sizeof(struct sli4_sge);
6915 
6916 	/* Limit to LPFC_MAX_NVME_SEG_CNT for NVME. */
6917 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
6918 		if (phba->cfg_sg_seg_cnt > LPFC_MAX_NVME_SEG_CNT) {
6919 			lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT,
6920 					"6300 Reducing NVME sg segment "
6921 					"cnt to %d\n",
6922 					LPFC_MAX_NVME_SEG_CNT);
6923 			phba->cfg_nvme_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
6924 		} else
6925 			phba->cfg_nvme_seg_cnt = phba->cfg_sg_seg_cnt;
6926 	}
6927 
6928 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_FCP,
6929 			"9087 sg_seg_cnt:%d dmabuf_size:%d "
6930 			"total:%d scsi:%d nvme:%d\n",
6931 			phba->cfg_sg_seg_cnt, phba->cfg_sg_dma_buf_size,
6932 			phba->cfg_total_seg_cnt,  phba->cfg_scsi_seg_cnt,
6933 			phba->cfg_nvme_seg_cnt);
6934 
6935 	if (phba->cfg_sg_dma_buf_size < SLI4_PAGE_SIZE)
6936 		i = phba->cfg_sg_dma_buf_size;
6937 	else
6938 		i = SLI4_PAGE_SIZE;
6939 
6940 	phba->lpfc_sg_dma_buf_pool =
6941 			dma_pool_create("lpfc_sg_dma_buf_pool",
6942 					&phba->pcidev->dev,
6943 					phba->cfg_sg_dma_buf_size,
6944 					i, 0);
6945 	if (!phba->lpfc_sg_dma_buf_pool)
6946 		goto out_free_bsmbx;
6947 
6948 	phba->lpfc_cmd_rsp_buf_pool =
6949 			dma_pool_create("lpfc_cmd_rsp_buf_pool",
6950 					&phba->pcidev->dev,
6951 					sizeof(struct fcp_cmnd) +
6952 					sizeof(struct fcp_rsp),
6953 					i, 0);
6954 	if (!phba->lpfc_cmd_rsp_buf_pool)
6955 		goto out_free_sg_dma_buf;
6956 
6957 	mempool_free(mboxq, phba->mbox_mem_pool);
6958 
6959 	/* Verify OAS is supported */
6960 	lpfc_sli4_oas_verify(phba);
6961 
6962 	/* Verify RAS support on adapter */
6963 	lpfc_sli4_ras_init(phba);
6964 
6965 	/* Verify all the SLI4 queues */
6966 	rc = lpfc_sli4_queue_verify(phba);
6967 	if (rc)
6968 		goto out_free_cmd_rsp_buf;
6969 
6970 	/* Create driver internal CQE event pool */
6971 	rc = lpfc_sli4_cq_event_pool_create(phba);
6972 	if (rc)
6973 		goto out_free_cmd_rsp_buf;
6974 
6975 	/* Initialize sgl lists per host */
6976 	lpfc_init_sgl_list(phba);
6977 
6978 	/* Allocate and initialize active sgl array */
6979 	rc = lpfc_init_active_sgl_array(phba);
6980 	if (rc) {
6981 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6982 				"1430 Failed to initialize sgl list.\n");
6983 		goto out_destroy_cq_event_pool;
6984 	}
6985 	rc = lpfc_sli4_init_rpi_hdrs(phba);
6986 	if (rc) {
6987 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6988 				"1432 Failed to initialize rpi headers.\n");
6989 		goto out_free_active_sgl;
6990 	}
6991 
6992 	/* Allocate eligible FCF bmask memory for FCF roundrobin failover */
6993 	longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
6994 	phba->fcf.fcf_rr_bmask = kcalloc(longs, sizeof(unsigned long),
6995 					 GFP_KERNEL);
6996 	if (!phba->fcf.fcf_rr_bmask) {
6997 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
6998 				"2759 Failed allocate memory for FCF round "
6999 				"robin failover bmask\n");
7000 		rc = -ENOMEM;
7001 		goto out_remove_rpi_hdrs;
7002 	}
7003 
7004 	phba->sli4_hba.hba_eq_hdl = kcalloc(phba->cfg_irq_chann,
7005 					    sizeof(struct lpfc_hba_eq_hdl),
7006 					    GFP_KERNEL);
7007 	if (!phba->sli4_hba.hba_eq_hdl) {
7008 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7009 				"2572 Failed allocate memory for "
7010 				"fast-path per-EQ handle array\n");
7011 		rc = -ENOMEM;
7012 		goto out_free_fcf_rr_bmask;
7013 	}
7014 
7015 	phba->sli4_hba.cpu_map = kcalloc(phba->sli4_hba.num_possible_cpu,
7016 					sizeof(struct lpfc_vector_map_info),
7017 					GFP_KERNEL);
7018 	if (!phba->sli4_hba.cpu_map) {
7019 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7020 				"3327 Failed allocate memory for msi-x "
7021 				"interrupt vector mapping\n");
7022 		rc = -ENOMEM;
7023 		goto out_free_hba_eq_hdl;
7024 	}
7025 
7026 	phba->sli4_hba.eq_info = alloc_percpu(struct lpfc_eq_intr_info);
7027 	if (!phba->sli4_hba.eq_info) {
7028 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7029 				"3321 Failed allocation for per_cpu stats\n");
7030 		rc = -ENOMEM;
7031 		goto out_free_hba_cpu_map;
7032 	}
7033 
7034 	phba->sli4_hba.idle_stat = kcalloc(phba->sli4_hba.num_possible_cpu,
7035 					   sizeof(*phba->sli4_hba.idle_stat),
7036 					   GFP_KERNEL);
7037 	if (!phba->sli4_hba.idle_stat) {
7038 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7039 				"3390 Failed allocation for idle_stat\n");
7040 		rc = -ENOMEM;
7041 		goto out_free_hba_eq_info;
7042 	}
7043 
7044 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7045 	phba->sli4_hba.c_stat = alloc_percpu(struct lpfc_hdwq_stat);
7046 	if (!phba->sli4_hba.c_stat) {
7047 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7048 				"3332 Failed allocating per cpu hdwq stats\n");
7049 		rc = -ENOMEM;
7050 		goto out_free_hba_idle_stat;
7051 	}
7052 #endif
7053 
7054 	/*
7055 	 * Enable sr-iov virtual functions if supported and configured
7056 	 * through the module parameter.
7057 	 */
7058 	if (phba->cfg_sriov_nr_virtfn > 0) {
7059 		rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
7060 						 phba->cfg_sriov_nr_virtfn);
7061 		if (rc) {
7062 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7063 					"3020 Requested number of SR-IOV "
7064 					"virtual functions (%d) is not "
7065 					"supported\n",
7066 					phba->cfg_sriov_nr_virtfn);
7067 			phba->cfg_sriov_nr_virtfn = 0;
7068 		}
7069 	}
7070 
7071 	return 0;
7072 
7073 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7074 out_free_hba_idle_stat:
7075 	kfree(phba->sli4_hba.idle_stat);
7076 #endif
7077 out_free_hba_eq_info:
7078 	free_percpu(phba->sli4_hba.eq_info);
7079 out_free_hba_cpu_map:
7080 	kfree(phba->sli4_hba.cpu_map);
7081 out_free_hba_eq_hdl:
7082 	kfree(phba->sli4_hba.hba_eq_hdl);
7083 out_free_fcf_rr_bmask:
7084 	kfree(phba->fcf.fcf_rr_bmask);
7085 out_remove_rpi_hdrs:
7086 	lpfc_sli4_remove_rpi_hdrs(phba);
7087 out_free_active_sgl:
7088 	lpfc_free_active_sgl(phba);
7089 out_destroy_cq_event_pool:
7090 	lpfc_sli4_cq_event_pool_destroy(phba);
7091 out_free_cmd_rsp_buf:
7092 	dma_pool_destroy(phba->lpfc_cmd_rsp_buf_pool);
7093 	phba->lpfc_cmd_rsp_buf_pool = NULL;
7094 out_free_sg_dma_buf:
7095 	dma_pool_destroy(phba->lpfc_sg_dma_buf_pool);
7096 	phba->lpfc_sg_dma_buf_pool = NULL;
7097 out_free_bsmbx:
7098 	lpfc_destroy_bootstrap_mbox(phba);
7099 out_free_mem:
7100 	lpfc_mem_free(phba);
7101 	return rc;
7102 }
7103 
7104 /**
7105  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
7106  * @phba: pointer to lpfc hba data structure.
7107  *
7108  * This routine is invoked to unset the driver internal resources set up
7109  * specific for supporting the SLI-4 HBA device it attached to.
7110  **/
7111 static void
7112 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
7113 {
7114 	struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
7115 
7116 	free_percpu(phba->sli4_hba.eq_info);
7117 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
7118 	free_percpu(phba->sli4_hba.c_stat);
7119 #endif
7120 	kfree(phba->sli4_hba.idle_stat);
7121 
7122 	/* Free memory allocated for msi-x interrupt vector to CPU mapping */
7123 	kfree(phba->sli4_hba.cpu_map);
7124 	phba->sli4_hba.num_possible_cpu = 0;
7125 	phba->sli4_hba.num_present_cpu = 0;
7126 	phba->sli4_hba.curr_disp_cpu = 0;
7127 	cpumask_clear(&phba->sli4_hba.irq_aff_mask);
7128 
7129 	/* Free memory allocated for fast-path work queue handles */
7130 	kfree(phba->sli4_hba.hba_eq_hdl);
7131 
7132 	/* Free the allocated rpi headers. */
7133 	lpfc_sli4_remove_rpi_hdrs(phba);
7134 	lpfc_sli4_remove_rpis(phba);
7135 
7136 	/* Free eligible FCF index bmask */
7137 	kfree(phba->fcf.fcf_rr_bmask);
7138 
7139 	/* Free the ELS sgl list */
7140 	lpfc_free_active_sgl(phba);
7141 	lpfc_free_els_sgl_list(phba);
7142 	lpfc_free_nvmet_sgl_list(phba);
7143 
7144 	/* Free the completion queue EQ event pool */
7145 	lpfc_sli4_cq_event_release_all(phba);
7146 	lpfc_sli4_cq_event_pool_destroy(phba);
7147 
7148 	/* Release resource identifiers. */
7149 	lpfc_sli4_dealloc_resource_identifiers(phba);
7150 
7151 	/* Free the bsmbx region. */
7152 	lpfc_destroy_bootstrap_mbox(phba);
7153 
7154 	/* Free the SLI Layer memory with SLI4 HBAs */
7155 	lpfc_mem_free_all(phba);
7156 
7157 	/* Free the current connect table */
7158 	list_for_each_entry_safe(conn_entry, next_conn_entry,
7159 		&phba->fcf_conn_rec_list, list) {
7160 		list_del_init(&conn_entry->list);
7161 		kfree(conn_entry);
7162 	}
7163 
7164 	return;
7165 }
7166 
7167 /**
7168  * lpfc_init_api_table_setup - Set up init api function jump table
7169  * @phba: The hba struct for which this call is being executed.
7170  * @dev_grp: The HBA PCI-Device group number.
7171  *
7172  * This routine sets up the device INIT interface API function jump table
7173  * in @phba struct.
7174  *
7175  * Returns: 0 - success, -ENODEV - failure.
7176  **/
7177 int
7178 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
7179 {
7180 	phba->lpfc_hba_init_link = lpfc_hba_init_link;
7181 	phba->lpfc_hba_down_link = lpfc_hba_down_link;
7182 	phba->lpfc_selective_reset = lpfc_selective_reset;
7183 	switch (dev_grp) {
7184 	case LPFC_PCI_DEV_LP:
7185 		phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
7186 		phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
7187 		phba->lpfc_stop_port = lpfc_stop_port_s3;
7188 		break;
7189 	case LPFC_PCI_DEV_OC:
7190 		phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
7191 		phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
7192 		phba->lpfc_stop_port = lpfc_stop_port_s4;
7193 		break;
7194 	default:
7195 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7196 				"1431 Invalid HBA PCI-device group: 0x%x\n",
7197 				dev_grp);
7198 		return -ENODEV;
7199 		break;
7200 	}
7201 	return 0;
7202 }
7203 
7204 /**
7205  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
7206  * @phba: pointer to lpfc hba data structure.
7207  *
7208  * This routine is invoked to set up the driver internal resources after the
7209  * device specific resource setup to support the HBA device it attached to.
7210  *
7211  * Return codes
7212  * 	0 - successful
7213  * 	other values - error
7214  **/
7215 static int
7216 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
7217 {
7218 	int error;
7219 
7220 	/* Startup the kernel thread for this host adapter. */
7221 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
7222 					  "lpfc_worker_%d", phba->brd_no);
7223 	if (IS_ERR(phba->worker_thread)) {
7224 		error = PTR_ERR(phba->worker_thread);
7225 		return error;
7226 	}
7227 
7228 	return 0;
7229 }
7230 
7231 /**
7232  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
7233  * @phba: pointer to lpfc hba data structure.
7234  *
7235  * This routine is invoked to unset the driver internal resources set up after
7236  * the device specific resource setup for supporting the HBA device it
7237  * attached to.
7238  **/
7239 static void
7240 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
7241 {
7242 	if (phba->wq) {
7243 		flush_workqueue(phba->wq);
7244 		destroy_workqueue(phba->wq);
7245 		phba->wq = NULL;
7246 	}
7247 
7248 	/* Stop kernel worker thread */
7249 	if (phba->worker_thread)
7250 		kthread_stop(phba->worker_thread);
7251 }
7252 
7253 /**
7254  * lpfc_free_iocb_list - Free iocb list.
7255  * @phba: pointer to lpfc hba data structure.
7256  *
7257  * This routine is invoked to free the driver's IOCB list and memory.
7258  **/
7259 void
7260 lpfc_free_iocb_list(struct lpfc_hba *phba)
7261 {
7262 	struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
7263 
7264 	spin_lock_irq(&phba->hbalock);
7265 	list_for_each_entry_safe(iocbq_entry, iocbq_next,
7266 				 &phba->lpfc_iocb_list, list) {
7267 		list_del(&iocbq_entry->list);
7268 		kfree(iocbq_entry);
7269 		phba->total_iocbq_bufs--;
7270 	}
7271 	spin_unlock_irq(&phba->hbalock);
7272 
7273 	return;
7274 }
7275 
7276 /**
7277  * lpfc_init_iocb_list - Allocate and initialize iocb list.
7278  * @phba: pointer to lpfc hba data structure.
7279  * @iocb_count: number of requested iocbs
7280  *
7281  * This routine is invoked to allocate and initizlize the driver's IOCB
7282  * list and set up the IOCB tag array accordingly.
7283  *
7284  * Return codes
7285  *	0 - successful
7286  *	other values - error
7287  **/
7288 int
7289 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
7290 {
7291 	struct lpfc_iocbq *iocbq_entry = NULL;
7292 	uint16_t iotag;
7293 	int i;
7294 
7295 	/* Initialize and populate the iocb list per host.  */
7296 	INIT_LIST_HEAD(&phba->lpfc_iocb_list);
7297 	for (i = 0; i < iocb_count; i++) {
7298 		iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
7299 		if (iocbq_entry == NULL) {
7300 			printk(KERN_ERR "%s: only allocated %d iocbs of "
7301 				"expected %d count. Unloading driver.\n",
7302 				__func__, i, iocb_count);
7303 			goto out_free_iocbq;
7304 		}
7305 
7306 		iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
7307 		if (iotag == 0) {
7308 			kfree(iocbq_entry);
7309 			printk(KERN_ERR "%s: failed to allocate IOTAG. "
7310 				"Unloading driver.\n", __func__);
7311 			goto out_free_iocbq;
7312 		}
7313 		iocbq_entry->sli4_lxritag = NO_XRI;
7314 		iocbq_entry->sli4_xritag = NO_XRI;
7315 
7316 		spin_lock_irq(&phba->hbalock);
7317 		list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
7318 		phba->total_iocbq_bufs++;
7319 		spin_unlock_irq(&phba->hbalock);
7320 	}
7321 
7322 	return 0;
7323 
7324 out_free_iocbq:
7325 	lpfc_free_iocb_list(phba);
7326 
7327 	return -ENOMEM;
7328 }
7329 
7330 /**
7331  * lpfc_free_sgl_list - Free a given sgl list.
7332  * @phba: pointer to lpfc hba data structure.
7333  * @sglq_list: pointer to the head of sgl list.
7334  *
7335  * This routine is invoked to free a give sgl list and memory.
7336  **/
7337 void
7338 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
7339 {
7340 	struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7341 
7342 	list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
7343 		list_del(&sglq_entry->list);
7344 		lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
7345 		kfree(sglq_entry);
7346 	}
7347 }
7348 
7349 /**
7350  * lpfc_free_els_sgl_list - Free els sgl list.
7351  * @phba: pointer to lpfc hba data structure.
7352  *
7353  * This routine is invoked to free the driver's els sgl list and memory.
7354  **/
7355 static void
7356 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
7357 {
7358 	LIST_HEAD(sglq_list);
7359 
7360 	/* Retrieve all els sgls from driver list */
7361 	spin_lock_irq(&phba->hbalock);
7362 	spin_lock(&phba->sli4_hba.sgl_list_lock);
7363 	list_splice_init(&phba->sli4_hba.lpfc_els_sgl_list, &sglq_list);
7364 	spin_unlock(&phba->sli4_hba.sgl_list_lock);
7365 	spin_unlock_irq(&phba->hbalock);
7366 
7367 	/* Now free the sgl list */
7368 	lpfc_free_sgl_list(phba, &sglq_list);
7369 }
7370 
7371 /**
7372  * lpfc_free_nvmet_sgl_list - Free nvmet sgl list.
7373  * @phba: pointer to lpfc hba data structure.
7374  *
7375  * This routine is invoked to free the driver's nvmet sgl list and memory.
7376  **/
7377 static void
7378 lpfc_free_nvmet_sgl_list(struct lpfc_hba *phba)
7379 {
7380 	struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
7381 	LIST_HEAD(sglq_list);
7382 
7383 	/* Retrieve all nvmet sgls from driver list */
7384 	spin_lock_irq(&phba->hbalock);
7385 	spin_lock(&phba->sli4_hba.sgl_list_lock);
7386 	list_splice_init(&phba->sli4_hba.lpfc_nvmet_sgl_list, &sglq_list);
7387 	spin_unlock(&phba->sli4_hba.sgl_list_lock);
7388 	spin_unlock_irq(&phba->hbalock);
7389 
7390 	/* Now free the sgl list */
7391 	list_for_each_entry_safe(sglq_entry, sglq_next, &sglq_list, list) {
7392 		list_del(&sglq_entry->list);
7393 		lpfc_nvmet_buf_free(phba, sglq_entry->virt, sglq_entry->phys);
7394 		kfree(sglq_entry);
7395 	}
7396 
7397 	/* Update the nvmet_xri_cnt to reflect no current sgls.
7398 	 * The next initialization cycle sets the count and allocates
7399 	 * the sgls over again.
7400 	 */
7401 	phba->sli4_hba.nvmet_xri_cnt = 0;
7402 }
7403 
7404 /**
7405  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
7406  * @phba: pointer to lpfc hba data structure.
7407  *
7408  * This routine is invoked to allocate the driver's active sgl memory.
7409  * This array will hold the sglq_entry's for active IOs.
7410  **/
7411 static int
7412 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
7413 {
7414 	int size;
7415 	size = sizeof(struct lpfc_sglq *);
7416 	size *= phba->sli4_hba.max_cfg_param.max_xri;
7417 
7418 	phba->sli4_hba.lpfc_sglq_active_list =
7419 		kzalloc(size, GFP_KERNEL);
7420 	if (!phba->sli4_hba.lpfc_sglq_active_list)
7421 		return -ENOMEM;
7422 	return 0;
7423 }
7424 
7425 /**
7426  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
7427  * @phba: pointer to lpfc hba data structure.
7428  *
7429  * This routine is invoked to walk through the array of active sglq entries
7430  * and free all of the resources.
7431  * This is just a place holder for now.
7432  **/
7433 static void
7434 lpfc_free_active_sgl(struct lpfc_hba *phba)
7435 {
7436 	kfree(phba->sli4_hba.lpfc_sglq_active_list);
7437 }
7438 
7439 /**
7440  * lpfc_init_sgl_list - Allocate and initialize sgl list.
7441  * @phba: pointer to lpfc hba data structure.
7442  *
7443  * This routine is invoked to allocate and initizlize the driver's sgl
7444  * list and set up the sgl xritag tag array accordingly.
7445  *
7446  **/
7447 static void
7448 lpfc_init_sgl_list(struct lpfc_hba *phba)
7449 {
7450 	/* Initialize and populate the sglq list per host/VF. */
7451 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_els_sgl_list);
7452 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
7453 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_nvmet_sgl_list);
7454 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
7455 
7456 	/* els xri-sgl book keeping */
7457 	phba->sli4_hba.els_xri_cnt = 0;
7458 
7459 	/* nvme xri-buffer book keeping */
7460 	phba->sli4_hba.io_xri_cnt = 0;
7461 }
7462 
7463 /**
7464  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
7465  * @phba: pointer to lpfc hba data structure.
7466  *
7467  * This routine is invoked to post rpi header templates to the
7468  * port for those SLI4 ports that do not support extents.  This routine
7469  * posts a PAGE_SIZE memory region to the port to hold up to
7470  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
7471  * and should be called only when interrupts are disabled.
7472  *
7473  * Return codes
7474  * 	0 - successful
7475  *	-ERROR - otherwise.
7476  **/
7477 int
7478 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
7479 {
7480 	int rc = 0;
7481 	struct lpfc_rpi_hdr *rpi_hdr;
7482 
7483 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
7484 	if (!phba->sli4_hba.rpi_hdrs_in_use)
7485 		return rc;
7486 	if (phba->sli4_hba.extents_in_use)
7487 		return -EIO;
7488 
7489 	rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
7490 	if (!rpi_hdr) {
7491 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7492 				"0391 Error during rpi post operation\n");
7493 		lpfc_sli4_remove_rpis(phba);
7494 		rc = -ENODEV;
7495 	}
7496 
7497 	return rc;
7498 }
7499 
7500 /**
7501  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
7502  * @phba: pointer to lpfc hba data structure.
7503  *
7504  * This routine is invoked to allocate a single 4KB memory region to
7505  * support rpis and stores them in the phba.  This single region
7506  * provides support for up to 64 rpis.  The region is used globally
7507  * by the device.
7508  *
7509  * Returns:
7510  *   A valid rpi hdr on success.
7511  *   A NULL pointer on any failure.
7512  **/
7513 struct lpfc_rpi_hdr *
7514 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
7515 {
7516 	uint16_t rpi_limit, curr_rpi_range;
7517 	struct lpfc_dmabuf *dmabuf;
7518 	struct lpfc_rpi_hdr *rpi_hdr;
7519 
7520 	/*
7521 	 * If the SLI4 port supports extents, posting the rpi header isn't
7522 	 * required.  Set the expected maximum count and let the actual value
7523 	 * get set when extents are fully allocated.
7524 	 */
7525 	if (!phba->sli4_hba.rpi_hdrs_in_use)
7526 		return NULL;
7527 	if (phba->sli4_hba.extents_in_use)
7528 		return NULL;
7529 
7530 	/* The limit on the logical index is just the max_rpi count. */
7531 	rpi_limit = phba->sli4_hba.max_cfg_param.max_rpi;
7532 
7533 	spin_lock_irq(&phba->hbalock);
7534 	/*
7535 	 * Establish the starting RPI in this header block.  The starting
7536 	 * rpi is normalized to a zero base because the physical rpi is
7537 	 * port based.
7538 	 */
7539 	curr_rpi_range = phba->sli4_hba.next_rpi;
7540 	spin_unlock_irq(&phba->hbalock);
7541 
7542 	/* Reached full RPI range */
7543 	if (curr_rpi_range == rpi_limit)
7544 		return NULL;
7545 
7546 	/*
7547 	 * First allocate the protocol header region for the port.  The
7548 	 * port expects a 4KB DMA-mapped memory region that is 4K aligned.
7549 	 */
7550 	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
7551 	if (!dmabuf)
7552 		return NULL;
7553 
7554 	dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
7555 					  LPFC_HDR_TEMPLATE_SIZE,
7556 					  &dmabuf->phys, GFP_KERNEL);
7557 	if (!dmabuf->virt) {
7558 		rpi_hdr = NULL;
7559 		goto err_free_dmabuf;
7560 	}
7561 
7562 	if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
7563 		rpi_hdr = NULL;
7564 		goto err_free_coherent;
7565 	}
7566 
7567 	/* Save the rpi header data for cleanup later. */
7568 	rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
7569 	if (!rpi_hdr)
7570 		goto err_free_coherent;
7571 
7572 	rpi_hdr->dmabuf = dmabuf;
7573 	rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
7574 	rpi_hdr->page_count = 1;
7575 	spin_lock_irq(&phba->hbalock);
7576 
7577 	/* The rpi_hdr stores the logical index only. */
7578 	rpi_hdr->start_rpi = curr_rpi_range;
7579 	rpi_hdr->next_rpi = phba->sli4_hba.next_rpi + LPFC_RPI_HDR_COUNT;
7580 	list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
7581 
7582 	spin_unlock_irq(&phba->hbalock);
7583 	return rpi_hdr;
7584 
7585  err_free_coherent:
7586 	dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
7587 			  dmabuf->virt, dmabuf->phys);
7588  err_free_dmabuf:
7589 	kfree(dmabuf);
7590 	return NULL;
7591 }
7592 
7593 /**
7594  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
7595  * @phba: pointer to lpfc hba data structure.
7596  *
7597  * This routine is invoked to remove all memory resources allocated
7598  * to support rpis for SLI4 ports not supporting extents. This routine
7599  * presumes the caller has released all rpis consumed by fabric or port
7600  * logins and is prepared to have the header pages removed.
7601  **/
7602 void
7603 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
7604 {
7605 	struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
7606 
7607 	if (!phba->sli4_hba.rpi_hdrs_in_use)
7608 		goto exit;
7609 
7610 	list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
7611 				 &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
7612 		list_del(&rpi_hdr->list);
7613 		dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
7614 				  rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
7615 		kfree(rpi_hdr->dmabuf);
7616 		kfree(rpi_hdr);
7617 	}
7618  exit:
7619 	/* There are no rpis available to the port now. */
7620 	phba->sli4_hba.next_rpi = 0;
7621 }
7622 
7623 /**
7624  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
7625  * @pdev: pointer to pci device data structure.
7626  *
7627  * This routine is invoked to allocate the driver hba data structure for an
7628  * HBA device. If the allocation is successful, the phba reference to the
7629  * PCI device data structure is set.
7630  *
7631  * Return codes
7632  *      pointer to @phba - successful
7633  *      NULL - error
7634  **/
7635 static struct lpfc_hba *
7636 lpfc_hba_alloc(struct pci_dev *pdev)
7637 {
7638 	struct lpfc_hba *phba;
7639 
7640 	/* Allocate memory for HBA structure */
7641 	phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
7642 	if (!phba) {
7643 		dev_err(&pdev->dev, "failed to allocate hba struct\n");
7644 		return NULL;
7645 	}
7646 
7647 	/* Set reference to PCI device in HBA structure */
7648 	phba->pcidev = pdev;
7649 
7650 	/* Assign an unused board number */
7651 	phba->brd_no = lpfc_get_instance();
7652 	if (phba->brd_no < 0) {
7653 		kfree(phba);
7654 		return NULL;
7655 	}
7656 	phba->eratt_poll_interval = LPFC_ERATT_POLL_INTERVAL;
7657 
7658 	spin_lock_init(&phba->ct_ev_lock);
7659 	INIT_LIST_HEAD(&phba->ct_ev_waiters);
7660 
7661 	return phba;
7662 }
7663 
7664 /**
7665  * lpfc_hba_free - Free driver hba data structure with a device.
7666  * @phba: pointer to lpfc hba data structure.
7667  *
7668  * This routine is invoked to free the driver hba data structure with an
7669  * HBA device.
7670  **/
7671 static void
7672 lpfc_hba_free(struct lpfc_hba *phba)
7673 {
7674 	if (phba->sli_rev == LPFC_SLI_REV4)
7675 		kfree(phba->sli4_hba.hdwq);
7676 
7677 	/* Release the driver assigned board number */
7678 	idr_remove(&lpfc_hba_index, phba->brd_no);
7679 
7680 	/* Free memory allocated with sli3 rings */
7681 	kfree(phba->sli.sli3_ring);
7682 	phba->sli.sli3_ring = NULL;
7683 
7684 	kfree(phba);
7685 	return;
7686 }
7687 
7688 /**
7689  * lpfc_create_shost - Create hba physical port with associated scsi host.
7690  * @phba: pointer to lpfc hba data structure.
7691  *
7692  * This routine is invoked to create HBA physical port and associate a SCSI
7693  * host with it.
7694  *
7695  * Return codes
7696  *      0 - successful
7697  *      other values - error
7698  **/
7699 static int
7700 lpfc_create_shost(struct lpfc_hba *phba)
7701 {
7702 	struct lpfc_vport *vport;
7703 	struct Scsi_Host  *shost;
7704 
7705 	/* Initialize HBA FC structure */
7706 	phba->fc_edtov = FF_DEF_EDTOV;
7707 	phba->fc_ratov = FF_DEF_RATOV;
7708 	phba->fc_altov = FF_DEF_ALTOV;
7709 	phba->fc_arbtov = FF_DEF_ARBTOV;
7710 
7711 	atomic_set(&phba->sdev_cnt, 0);
7712 	vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
7713 	if (!vport)
7714 		return -ENODEV;
7715 
7716 	shost = lpfc_shost_from_vport(vport);
7717 	phba->pport = vport;
7718 
7719 	if (phba->nvmet_support) {
7720 		/* Only 1 vport (pport) will support NVME target */
7721 		phba->targetport = NULL;
7722 		phba->cfg_enable_fc4_type = LPFC_ENABLE_NVME;
7723 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME_DISC,
7724 				"6076 NVME Target Found\n");
7725 	}
7726 
7727 	lpfc_debugfs_initialize(vport);
7728 	/* Put reference to SCSI host to driver's device private data */
7729 	pci_set_drvdata(phba->pcidev, shost);
7730 
7731 	/*
7732 	 * At this point we are fully registered with PSA. In addition,
7733 	 * any initial discovery should be completed.
7734 	 */
7735 	vport->load_flag |= FC_ALLOW_FDMI;
7736 	if (phba->cfg_enable_SmartSAN ||
7737 	    (phba->cfg_fdmi_on == LPFC_FDMI_SUPPORT)) {
7738 
7739 		/* Setup appropriate attribute masks */
7740 		vport->fdmi_hba_mask = LPFC_FDMI2_HBA_ATTR;
7741 		if (phba->cfg_enable_SmartSAN)
7742 			vport->fdmi_port_mask = LPFC_FDMI2_SMART_ATTR;
7743 		else
7744 			vport->fdmi_port_mask = LPFC_FDMI2_PORT_ATTR;
7745 	}
7746 	return 0;
7747 }
7748 
7749 /**
7750  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
7751  * @phba: pointer to lpfc hba data structure.
7752  *
7753  * This routine is invoked to destroy HBA physical port and the associated
7754  * SCSI host.
7755  **/
7756 static void
7757 lpfc_destroy_shost(struct lpfc_hba *phba)
7758 {
7759 	struct lpfc_vport *vport = phba->pport;
7760 
7761 	/* Destroy physical port that associated with the SCSI host */
7762 	destroy_port(vport);
7763 
7764 	return;
7765 }
7766 
7767 /**
7768  * lpfc_setup_bg - Setup Block guard structures and debug areas.
7769  * @phba: pointer to lpfc hba data structure.
7770  * @shost: the shost to be used to detect Block guard settings.
7771  *
7772  * This routine sets up the local Block guard protocol settings for @shost.
7773  * This routine also allocates memory for debugging bg buffers.
7774  **/
7775 static void
7776 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
7777 {
7778 	uint32_t old_mask;
7779 	uint32_t old_guard;
7780 
7781 	if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
7782 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7783 				"1478 Registering BlockGuard with the "
7784 				"SCSI layer\n");
7785 
7786 		old_mask = phba->cfg_prot_mask;
7787 		old_guard = phba->cfg_prot_guard;
7788 
7789 		/* Only allow supported values */
7790 		phba->cfg_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
7791 			SHOST_DIX_TYPE0_PROTECTION |
7792 			SHOST_DIX_TYPE1_PROTECTION);
7793 		phba->cfg_prot_guard &= (SHOST_DIX_GUARD_IP |
7794 					 SHOST_DIX_GUARD_CRC);
7795 
7796 		/* DIF Type 1 protection for profiles AST1/C1 is end to end */
7797 		if (phba->cfg_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
7798 			phba->cfg_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
7799 
7800 		if (phba->cfg_prot_mask && phba->cfg_prot_guard) {
7801 			if ((old_mask != phba->cfg_prot_mask) ||
7802 				(old_guard != phba->cfg_prot_guard))
7803 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7804 					"1475 Registering BlockGuard with the "
7805 					"SCSI layer: mask %d  guard %d\n",
7806 					phba->cfg_prot_mask,
7807 					phba->cfg_prot_guard);
7808 
7809 			scsi_host_set_prot(shost, phba->cfg_prot_mask);
7810 			scsi_host_set_guard(shost, phba->cfg_prot_guard);
7811 		} else
7812 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
7813 				"1479 Not Registering BlockGuard with the SCSI "
7814 				"layer, Bad protection parameters: %d %d\n",
7815 				old_mask, old_guard);
7816 	}
7817 }
7818 
7819 /**
7820  * lpfc_post_init_setup - Perform necessary device post initialization setup.
7821  * @phba: pointer to lpfc hba data structure.
7822  *
7823  * This routine is invoked to perform all the necessary post initialization
7824  * setup for the device.
7825  **/
7826 static void
7827 lpfc_post_init_setup(struct lpfc_hba *phba)
7828 {
7829 	struct Scsi_Host  *shost;
7830 	struct lpfc_adapter_event_header adapter_event;
7831 
7832 	/* Get the default values for Model Name and Description */
7833 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
7834 
7835 	/*
7836 	 * hba setup may have changed the hba_queue_depth so we need to
7837 	 * adjust the value of can_queue.
7838 	 */
7839 	shost = pci_get_drvdata(phba->pcidev);
7840 	shost->can_queue = phba->cfg_hba_queue_depth - 10;
7841 
7842 	lpfc_host_attrib_init(shost);
7843 
7844 	if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
7845 		spin_lock_irq(shost->host_lock);
7846 		lpfc_poll_start_timer(phba);
7847 		spin_unlock_irq(shost->host_lock);
7848 	}
7849 
7850 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7851 			"0428 Perform SCSI scan\n");
7852 	/* Send board arrival event to upper layer */
7853 	adapter_event.event_type = FC_REG_ADAPTER_EVENT;
7854 	adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
7855 	fc_host_post_vendor_event(shost, fc_get_event_number(),
7856 				  sizeof(adapter_event),
7857 				  (char *) &adapter_event,
7858 				  LPFC_NL_VENDOR_ID);
7859 	return;
7860 }
7861 
7862 /**
7863  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
7864  * @phba: pointer to lpfc hba data structure.
7865  *
7866  * This routine is invoked to set up the PCI device memory space for device
7867  * with SLI-3 interface spec.
7868  *
7869  * Return codes
7870  * 	0 - successful
7871  * 	other values - error
7872  **/
7873 static int
7874 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
7875 {
7876 	struct pci_dev *pdev = phba->pcidev;
7877 	unsigned long bar0map_len, bar2map_len;
7878 	int i, hbq_count;
7879 	void *ptr;
7880 	int error;
7881 
7882 	if (!pdev)
7883 		return -ENODEV;
7884 
7885 	/* Set the device DMA mask size */
7886 	error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
7887 	if (error)
7888 		error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
7889 	if (error)
7890 		return error;
7891 	error = -ENODEV;
7892 
7893 	/* Get the bus address of Bar0 and Bar2 and the number of bytes
7894 	 * required by each mapping.
7895 	 */
7896 	phba->pci_bar0_map = pci_resource_start(pdev, 0);
7897 	bar0map_len = pci_resource_len(pdev, 0);
7898 
7899 	phba->pci_bar2_map = pci_resource_start(pdev, 2);
7900 	bar2map_len = pci_resource_len(pdev, 2);
7901 
7902 	/* Map HBA SLIM to a kernel virtual address. */
7903 	phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
7904 	if (!phba->slim_memmap_p) {
7905 		dev_printk(KERN_ERR, &pdev->dev,
7906 			   "ioremap failed for SLIM memory.\n");
7907 		goto out;
7908 	}
7909 
7910 	/* Map HBA Control Registers to a kernel virtual address. */
7911 	phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
7912 	if (!phba->ctrl_regs_memmap_p) {
7913 		dev_printk(KERN_ERR, &pdev->dev,
7914 			   "ioremap failed for HBA control registers.\n");
7915 		goto out_iounmap_slim;
7916 	}
7917 
7918 	/* Allocate memory for SLI-2 structures */
7919 	phba->slim2p.virt = dma_alloc_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7920 					       &phba->slim2p.phys, GFP_KERNEL);
7921 	if (!phba->slim2p.virt)
7922 		goto out_iounmap;
7923 
7924 	phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
7925 	phba->mbox_ext = (phba->slim2p.virt +
7926 		offsetof(struct lpfc_sli2_slim, mbx_ext_words));
7927 	phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
7928 	phba->IOCBs = (phba->slim2p.virt +
7929 		       offsetof(struct lpfc_sli2_slim, IOCBs));
7930 
7931 	phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
7932 						 lpfc_sli_hbq_size(),
7933 						 &phba->hbqslimp.phys,
7934 						 GFP_KERNEL);
7935 	if (!phba->hbqslimp.virt)
7936 		goto out_free_slim;
7937 
7938 	hbq_count = lpfc_sli_hbq_count();
7939 	ptr = phba->hbqslimp.virt;
7940 	for (i = 0; i < hbq_count; ++i) {
7941 		phba->hbqs[i].hbq_virt = ptr;
7942 		INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
7943 		ptr += (lpfc_hbq_defs[i]->entry_count *
7944 			sizeof(struct lpfc_hbq_entry));
7945 	}
7946 	phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
7947 	phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
7948 
7949 	memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
7950 
7951 	phba->MBslimaddr = phba->slim_memmap_p;
7952 	phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
7953 	phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
7954 	phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
7955 	phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
7956 
7957 	return 0;
7958 
7959 out_free_slim:
7960 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7961 			  phba->slim2p.virt, phba->slim2p.phys);
7962 out_iounmap:
7963 	iounmap(phba->ctrl_regs_memmap_p);
7964 out_iounmap_slim:
7965 	iounmap(phba->slim_memmap_p);
7966 out:
7967 	return error;
7968 }
7969 
7970 /**
7971  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
7972  * @phba: pointer to lpfc hba data structure.
7973  *
7974  * This routine is invoked to unset the PCI device memory space for device
7975  * with SLI-3 interface spec.
7976  **/
7977 static void
7978 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
7979 {
7980 	struct pci_dev *pdev;
7981 
7982 	/* Obtain PCI device reference */
7983 	if (!phba->pcidev)
7984 		return;
7985 	else
7986 		pdev = phba->pcidev;
7987 
7988 	/* Free coherent DMA memory allocated */
7989 	dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
7990 			  phba->hbqslimp.virt, phba->hbqslimp.phys);
7991 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7992 			  phba->slim2p.virt, phba->slim2p.phys);
7993 
7994 	/* I/O memory unmap */
7995 	iounmap(phba->ctrl_regs_memmap_p);
7996 	iounmap(phba->slim_memmap_p);
7997 
7998 	return;
7999 }
8000 
8001 /**
8002  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
8003  * @phba: pointer to lpfc hba data structure.
8004  *
8005  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
8006  * done and check status.
8007  *
8008  * Return 0 if successful, otherwise -ENODEV.
8009  **/
8010 int
8011 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
8012 {
8013 	struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
8014 	struct lpfc_register reg_data;
8015 	int i, port_error = 0;
8016 	uint32_t if_type;
8017 
8018 	memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
8019 	memset(&reg_data, 0, sizeof(reg_data));
8020 	if (!phba->sli4_hba.PSMPHRregaddr)
8021 		return -ENODEV;
8022 
8023 	/* Wait up to 30 seconds for the SLI Port POST done and ready */
8024 	for (i = 0; i < 3000; i++) {
8025 		if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
8026 			&portsmphr_reg.word0) ||
8027 			(bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
8028 			/* Port has a fatal POST error, break out */
8029 			port_error = -ENODEV;
8030 			break;
8031 		}
8032 		if (LPFC_POST_STAGE_PORT_READY ==
8033 		    bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
8034 			break;
8035 		msleep(10);
8036 	}
8037 
8038 	/*
8039 	 * If there was a port error during POST, then don't proceed with
8040 	 * other register reads as the data may not be valid.  Just exit.
8041 	 */
8042 	if (port_error) {
8043 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8044 			"1408 Port Failed POST - portsmphr=0x%x, "
8045 			"perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
8046 			"scr2=x%x, hscratch=x%x, pstatus=x%x\n",
8047 			portsmphr_reg.word0,
8048 			bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
8049 			bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
8050 			bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
8051 			bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
8052 			bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
8053 			bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
8054 			bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
8055 			bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
8056 	} else {
8057 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8058 				"2534 Device Info: SLIFamily=0x%x, "
8059 				"SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
8060 				"SLIHint_2=0x%x, FT=0x%x\n",
8061 				bf_get(lpfc_sli_intf_sli_family,
8062 				       &phba->sli4_hba.sli_intf),
8063 				bf_get(lpfc_sli_intf_slirev,
8064 				       &phba->sli4_hba.sli_intf),
8065 				bf_get(lpfc_sli_intf_if_type,
8066 				       &phba->sli4_hba.sli_intf),
8067 				bf_get(lpfc_sli_intf_sli_hint1,
8068 				       &phba->sli4_hba.sli_intf),
8069 				bf_get(lpfc_sli_intf_sli_hint2,
8070 				       &phba->sli4_hba.sli_intf),
8071 				bf_get(lpfc_sli_intf_func_type,
8072 				       &phba->sli4_hba.sli_intf));
8073 		/*
8074 		 * Check for other Port errors during the initialization
8075 		 * process.  Fail the load if the port did not come up
8076 		 * correctly.
8077 		 */
8078 		if_type = bf_get(lpfc_sli_intf_if_type,
8079 				 &phba->sli4_hba.sli_intf);
8080 		switch (if_type) {
8081 		case LPFC_SLI_INTF_IF_TYPE_0:
8082 			phba->sli4_hba.ue_mask_lo =
8083 			      readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
8084 			phba->sli4_hba.ue_mask_hi =
8085 			      readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
8086 			uerrlo_reg.word0 =
8087 			      readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
8088 			uerrhi_reg.word0 =
8089 				readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
8090 			if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
8091 			    (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
8092 				lpfc_printf_log(phba, KERN_ERR,
8093 						LOG_TRACE_EVENT,
8094 						"1422 Unrecoverable Error "
8095 						"Detected during POST "
8096 						"uerr_lo_reg=0x%x, "
8097 						"uerr_hi_reg=0x%x, "
8098 						"ue_mask_lo_reg=0x%x, "
8099 						"ue_mask_hi_reg=0x%x\n",
8100 						uerrlo_reg.word0,
8101 						uerrhi_reg.word0,
8102 						phba->sli4_hba.ue_mask_lo,
8103 						phba->sli4_hba.ue_mask_hi);
8104 				port_error = -ENODEV;
8105 			}
8106 			break;
8107 		case LPFC_SLI_INTF_IF_TYPE_2:
8108 		case LPFC_SLI_INTF_IF_TYPE_6:
8109 			/* Final checks.  The port status should be clean. */
8110 			if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
8111 				&reg_data.word0) ||
8112 				(bf_get(lpfc_sliport_status_err, &reg_data) &&
8113 				 !bf_get(lpfc_sliport_status_rn, &reg_data))) {
8114 				phba->work_status[0] =
8115 					readl(phba->sli4_hba.u.if_type2.
8116 					      ERR1regaddr);
8117 				phba->work_status[1] =
8118 					readl(phba->sli4_hba.u.if_type2.
8119 					      ERR2regaddr);
8120 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8121 					"2888 Unrecoverable port error "
8122 					"following POST: port status reg "
8123 					"0x%x, port_smphr reg 0x%x, "
8124 					"error 1=0x%x, error 2=0x%x\n",
8125 					reg_data.word0,
8126 					portsmphr_reg.word0,
8127 					phba->work_status[0],
8128 					phba->work_status[1]);
8129 				port_error = -ENODEV;
8130 			}
8131 			break;
8132 		case LPFC_SLI_INTF_IF_TYPE_1:
8133 		default:
8134 			break;
8135 		}
8136 	}
8137 	return port_error;
8138 }
8139 
8140 /**
8141  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
8142  * @phba: pointer to lpfc hba data structure.
8143  * @if_type:  The SLI4 interface type getting configured.
8144  *
8145  * This routine is invoked to set up SLI4 BAR0 PCI config space register
8146  * memory map.
8147  **/
8148 static void
8149 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
8150 {
8151 	switch (if_type) {
8152 	case LPFC_SLI_INTF_IF_TYPE_0:
8153 		phba->sli4_hba.u.if_type0.UERRLOregaddr =
8154 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
8155 		phba->sli4_hba.u.if_type0.UERRHIregaddr =
8156 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
8157 		phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
8158 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
8159 		phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
8160 			phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
8161 		phba->sli4_hba.SLIINTFregaddr =
8162 			phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
8163 		break;
8164 	case LPFC_SLI_INTF_IF_TYPE_2:
8165 		phba->sli4_hba.u.if_type2.EQDregaddr =
8166 			phba->sli4_hba.conf_regs_memmap_p +
8167 						LPFC_CTL_PORT_EQ_DELAY_OFFSET;
8168 		phba->sli4_hba.u.if_type2.ERR1regaddr =
8169 			phba->sli4_hba.conf_regs_memmap_p +
8170 						LPFC_CTL_PORT_ER1_OFFSET;
8171 		phba->sli4_hba.u.if_type2.ERR2regaddr =
8172 			phba->sli4_hba.conf_regs_memmap_p +
8173 						LPFC_CTL_PORT_ER2_OFFSET;
8174 		phba->sli4_hba.u.if_type2.CTRLregaddr =
8175 			phba->sli4_hba.conf_regs_memmap_p +
8176 						LPFC_CTL_PORT_CTL_OFFSET;
8177 		phba->sli4_hba.u.if_type2.STATUSregaddr =
8178 			phba->sli4_hba.conf_regs_memmap_p +
8179 						LPFC_CTL_PORT_STA_OFFSET;
8180 		phba->sli4_hba.SLIINTFregaddr =
8181 			phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
8182 		phba->sli4_hba.PSMPHRregaddr =
8183 			phba->sli4_hba.conf_regs_memmap_p +
8184 						LPFC_CTL_PORT_SEM_OFFSET;
8185 		phba->sli4_hba.RQDBregaddr =
8186 			phba->sli4_hba.conf_regs_memmap_p +
8187 						LPFC_ULP0_RQ_DOORBELL;
8188 		phba->sli4_hba.WQDBregaddr =
8189 			phba->sli4_hba.conf_regs_memmap_p +
8190 						LPFC_ULP0_WQ_DOORBELL;
8191 		phba->sli4_hba.CQDBregaddr =
8192 			phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
8193 		phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
8194 		phba->sli4_hba.MQDBregaddr =
8195 			phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
8196 		phba->sli4_hba.BMBXregaddr =
8197 			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
8198 		break;
8199 	case LPFC_SLI_INTF_IF_TYPE_6:
8200 		phba->sli4_hba.u.if_type2.EQDregaddr =
8201 			phba->sli4_hba.conf_regs_memmap_p +
8202 						LPFC_CTL_PORT_EQ_DELAY_OFFSET;
8203 		phba->sli4_hba.u.if_type2.ERR1regaddr =
8204 			phba->sli4_hba.conf_regs_memmap_p +
8205 						LPFC_CTL_PORT_ER1_OFFSET;
8206 		phba->sli4_hba.u.if_type2.ERR2regaddr =
8207 			phba->sli4_hba.conf_regs_memmap_p +
8208 						LPFC_CTL_PORT_ER2_OFFSET;
8209 		phba->sli4_hba.u.if_type2.CTRLregaddr =
8210 			phba->sli4_hba.conf_regs_memmap_p +
8211 						LPFC_CTL_PORT_CTL_OFFSET;
8212 		phba->sli4_hba.u.if_type2.STATUSregaddr =
8213 			phba->sli4_hba.conf_regs_memmap_p +
8214 						LPFC_CTL_PORT_STA_OFFSET;
8215 		phba->sli4_hba.PSMPHRregaddr =
8216 			phba->sli4_hba.conf_regs_memmap_p +
8217 						LPFC_CTL_PORT_SEM_OFFSET;
8218 		phba->sli4_hba.BMBXregaddr =
8219 			phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
8220 		break;
8221 	case LPFC_SLI_INTF_IF_TYPE_1:
8222 	default:
8223 		dev_printk(KERN_ERR, &phba->pcidev->dev,
8224 			   "FATAL - unsupported SLI4 interface type - %d\n",
8225 			   if_type);
8226 		break;
8227 	}
8228 }
8229 
8230 /**
8231  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
8232  * @phba: pointer to lpfc hba data structure.
8233  * @if_type: sli if type to operate on.
8234  *
8235  * This routine is invoked to set up SLI4 BAR1 register memory map.
8236  **/
8237 static void
8238 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
8239 {
8240 	switch (if_type) {
8241 	case LPFC_SLI_INTF_IF_TYPE_0:
8242 		phba->sli4_hba.PSMPHRregaddr =
8243 			phba->sli4_hba.ctrl_regs_memmap_p +
8244 			LPFC_SLIPORT_IF0_SMPHR;
8245 		phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8246 			LPFC_HST_ISR0;
8247 		phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8248 			LPFC_HST_IMR0;
8249 		phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
8250 			LPFC_HST_ISCR0;
8251 		break;
8252 	case LPFC_SLI_INTF_IF_TYPE_6:
8253 		phba->sli4_hba.RQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8254 			LPFC_IF6_RQ_DOORBELL;
8255 		phba->sli4_hba.WQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8256 			LPFC_IF6_WQ_DOORBELL;
8257 		phba->sli4_hba.CQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8258 			LPFC_IF6_CQ_DOORBELL;
8259 		phba->sli4_hba.EQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8260 			LPFC_IF6_EQ_DOORBELL;
8261 		phba->sli4_hba.MQDBregaddr = phba->sli4_hba.drbl_regs_memmap_p +
8262 			LPFC_IF6_MQ_DOORBELL;
8263 		break;
8264 	case LPFC_SLI_INTF_IF_TYPE_2:
8265 	case LPFC_SLI_INTF_IF_TYPE_1:
8266 	default:
8267 		dev_err(&phba->pcidev->dev,
8268 			   "FATAL - unsupported SLI4 interface type - %d\n",
8269 			   if_type);
8270 		break;
8271 	}
8272 }
8273 
8274 /**
8275  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
8276  * @phba: pointer to lpfc hba data structure.
8277  * @vf: virtual function number
8278  *
8279  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
8280  * based on the given viftual function number, @vf.
8281  *
8282  * Return 0 if successful, otherwise -ENODEV.
8283  **/
8284 static int
8285 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
8286 {
8287 	if (vf > LPFC_VIR_FUNC_MAX)
8288 		return -ENODEV;
8289 
8290 	phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8291 				vf * LPFC_VFR_PAGE_SIZE +
8292 					LPFC_ULP0_RQ_DOORBELL);
8293 	phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8294 				vf * LPFC_VFR_PAGE_SIZE +
8295 					LPFC_ULP0_WQ_DOORBELL);
8296 	phba->sli4_hba.CQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8297 				vf * LPFC_VFR_PAGE_SIZE +
8298 					LPFC_EQCQ_DOORBELL);
8299 	phba->sli4_hba.EQDBregaddr = phba->sli4_hba.CQDBregaddr;
8300 	phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8301 				vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
8302 	phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
8303 				vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
8304 	return 0;
8305 }
8306 
8307 /**
8308  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
8309  * @phba: pointer to lpfc hba data structure.
8310  *
8311  * This routine is invoked to create the bootstrap mailbox
8312  * region consistent with the SLI-4 interface spec.  This
8313  * routine allocates all memory necessary to communicate
8314  * mailbox commands to the port and sets up all alignment
8315  * needs.  No locks are expected to be held when calling
8316  * this routine.
8317  *
8318  * Return codes
8319  * 	0 - successful
8320  * 	-ENOMEM - could not allocated memory.
8321  **/
8322 static int
8323 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
8324 {
8325 	uint32_t bmbx_size;
8326 	struct lpfc_dmabuf *dmabuf;
8327 	struct dma_address *dma_address;
8328 	uint32_t pa_addr;
8329 	uint64_t phys_addr;
8330 
8331 	dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
8332 	if (!dmabuf)
8333 		return -ENOMEM;
8334 
8335 	/*
8336 	 * The bootstrap mailbox region is comprised of 2 parts
8337 	 * plus an alignment restriction of 16 bytes.
8338 	 */
8339 	bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
8340 	dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev, bmbx_size,
8341 					  &dmabuf->phys, GFP_KERNEL);
8342 	if (!dmabuf->virt) {
8343 		kfree(dmabuf);
8344 		return -ENOMEM;
8345 	}
8346 
8347 	/*
8348 	 * Initialize the bootstrap mailbox pointers now so that the register
8349 	 * operations are simple later.  The mailbox dma address is required
8350 	 * to be 16-byte aligned.  Also align the virtual memory as each
8351 	 * maibox is copied into the bmbx mailbox region before issuing the
8352 	 * command to the port.
8353 	 */
8354 	phba->sli4_hba.bmbx.dmabuf = dmabuf;
8355 	phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
8356 
8357 	phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
8358 					      LPFC_ALIGN_16_BYTE);
8359 	phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
8360 					      LPFC_ALIGN_16_BYTE);
8361 
8362 	/*
8363 	 * Set the high and low physical addresses now.  The SLI4 alignment
8364 	 * requirement is 16 bytes and the mailbox is posted to the port
8365 	 * as two 30-bit addresses.  The other data is a bit marking whether
8366 	 * the 30-bit address is the high or low address.
8367 	 * Upcast bmbx aphys to 64bits so shift instruction compiles
8368 	 * clean on 32 bit machines.
8369 	 */
8370 	dma_address = &phba->sli4_hba.bmbx.dma_address;
8371 	phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
8372 	pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
8373 	dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
8374 					   LPFC_BMBX_BIT1_ADDR_HI);
8375 
8376 	pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
8377 	dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
8378 					   LPFC_BMBX_BIT1_ADDR_LO);
8379 	return 0;
8380 }
8381 
8382 /**
8383  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
8384  * @phba: pointer to lpfc hba data structure.
8385  *
8386  * This routine is invoked to teardown the bootstrap mailbox
8387  * region and release all host resources. This routine requires
8388  * the caller to ensure all mailbox commands recovered, no
8389  * additional mailbox comands are sent, and interrupts are disabled
8390  * before calling this routine.
8391  *
8392  **/
8393 static void
8394 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
8395 {
8396 	dma_free_coherent(&phba->pcidev->dev,
8397 			  phba->sli4_hba.bmbx.bmbx_size,
8398 			  phba->sli4_hba.bmbx.dmabuf->virt,
8399 			  phba->sli4_hba.bmbx.dmabuf->phys);
8400 
8401 	kfree(phba->sli4_hba.bmbx.dmabuf);
8402 	memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
8403 }
8404 
8405 static const char * const lpfc_topo_to_str[] = {
8406 	"Loop then P2P",
8407 	"Loopback",
8408 	"P2P Only",
8409 	"Unsupported",
8410 	"Loop Only",
8411 	"Unsupported",
8412 	"P2P then Loop",
8413 };
8414 
8415 #define	LINK_FLAGS_DEF	0x0
8416 #define	LINK_FLAGS_P2P	0x1
8417 #define	LINK_FLAGS_LOOP	0x2
8418 /**
8419  * lpfc_map_topology - Map the topology read from READ_CONFIG
8420  * @phba: pointer to lpfc hba data structure.
8421  * @rd_config: pointer to read config data
8422  *
8423  * This routine is invoked to map the topology values as read
8424  * from the read config mailbox command. If the persistent
8425  * topology feature is supported, the firmware will provide the
8426  * saved topology information to be used in INIT_LINK
8427  **/
8428 static void
8429 lpfc_map_topology(struct lpfc_hba *phba, struct lpfc_mbx_read_config *rd_config)
8430 {
8431 	u8 ptv, tf, pt;
8432 
8433 	ptv = bf_get(lpfc_mbx_rd_conf_ptv, rd_config);
8434 	tf = bf_get(lpfc_mbx_rd_conf_tf, rd_config);
8435 	pt = bf_get(lpfc_mbx_rd_conf_pt, rd_config);
8436 
8437 	lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8438 			"2027 Read Config Data : ptv:0x%x, tf:0x%x pt:0x%x",
8439 			 ptv, tf, pt);
8440 	if (!ptv) {
8441 		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8442 				"2019 FW does not support persistent topology "
8443 				"Using driver parameter defined value [%s]",
8444 				lpfc_topo_to_str[phba->cfg_topology]);
8445 		return;
8446 	}
8447 	/* FW supports persistent topology - override module parameter value */
8448 	phba->hba_flag |= HBA_PERSISTENT_TOPO;
8449 	switch (phba->pcidev->device) {
8450 	case PCI_DEVICE_ID_LANCER_G7_FC:
8451 	case PCI_DEVICE_ID_LANCER_G6_FC:
8452 		if (!tf) {
8453 			phba->cfg_topology = ((pt == LINK_FLAGS_LOOP)
8454 					? FLAGS_TOPOLOGY_MODE_LOOP
8455 					: FLAGS_TOPOLOGY_MODE_PT_PT);
8456 		} else {
8457 			phba->hba_flag &= ~HBA_PERSISTENT_TOPO;
8458 		}
8459 		break;
8460 	default:	/* G5 */
8461 		if (tf) {
8462 			/* If topology failover set - pt is '0' or '1' */
8463 			phba->cfg_topology = (pt ? FLAGS_TOPOLOGY_MODE_PT_LOOP :
8464 					      FLAGS_TOPOLOGY_MODE_LOOP_PT);
8465 		} else {
8466 			phba->cfg_topology = ((pt == LINK_FLAGS_P2P)
8467 					? FLAGS_TOPOLOGY_MODE_PT_PT
8468 					: FLAGS_TOPOLOGY_MODE_LOOP);
8469 		}
8470 		break;
8471 	}
8472 	if (phba->hba_flag & HBA_PERSISTENT_TOPO) {
8473 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8474 				"2020 Using persistent topology value [%s]",
8475 				lpfc_topo_to_str[phba->cfg_topology]);
8476 	} else {
8477 		lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8478 				"2021 Invalid topology values from FW "
8479 				"Using driver parameter defined value [%s]",
8480 				lpfc_topo_to_str[phba->cfg_topology]);
8481 	}
8482 }
8483 
8484 /**
8485  * lpfc_sli4_read_config - Get the config parameters.
8486  * @phba: pointer to lpfc hba data structure.
8487  *
8488  * This routine is invoked to read the configuration parameters from the HBA.
8489  * The configuration parameters are used to set the base and maximum values
8490  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
8491  * allocation for the port.
8492  *
8493  * Return codes
8494  * 	0 - successful
8495  * 	-ENOMEM - No available memory
8496  *      -EIO - The mailbox failed to complete successfully.
8497  **/
8498 int
8499 lpfc_sli4_read_config(struct lpfc_hba *phba)
8500 {
8501 	LPFC_MBOXQ_t *pmb;
8502 	struct lpfc_mbx_read_config *rd_config;
8503 	union  lpfc_sli4_cfg_shdr *shdr;
8504 	uint32_t shdr_status, shdr_add_status;
8505 	struct lpfc_mbx_get_func_cfg *get_func_cfg;
8506 	struct lpfc_rsrc_desc_fcfcoe *desc;
8507 	char *pdesc_0;
8508 	uint16_t forced_link_speed;
8509 	uint32_t if_type, qmin;
8510 	int length, i, rc = 0, rc2;
8511 
8512 	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
8513 	if (!pmb) {
8514 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8515 				"2011 Unable to allocate memory for issuing "
8516 				"SLI_CONFIG_SPECIAL mailbox command\n");
8517 		return -ENOMEM;
8518 	}
8519 
8520 	lpfc_read_config(phba, pmb);
8521 
8522 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8523 	if (rc != MBX_SUCCESS) {
8524 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8525 				"2012 Mailbox failed , mbxCmd x%x "
8526 				"READ_CONFIG, mbxStatus x%x\n",
8527 				bf_get(lpfc_mqe_command, &pmb->u.mqe),
8528 				bf_get(lpfc_mqe_status, &pmb->u.mqe));
8529 		rc = -EIO;
8530 	} else {
8531 		rd_config = &pmb->u.mqe.un.rd_config;
8532 		if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
8533 			phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
8534 			phba->sli4_hba.lnk_info.lnk_tp =
8535 				bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
8536 			phba->sli4_hba.lnk_info.lnk_no =
8537 				bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
8538 			lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8539 					"3081 lnk_type:%d, lnk_numb:%d\n",
8540 					phba->sli4_hba.lnk_info.lnk_tp,
8541 					phba->sli4_hba.lnk_info.lnk_no);
8542 		} else
8543 			lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8544 					"3082 Mailbox (x%x) returned ldv:x0\n",
8545 					bf_get(lpfc_mqe_command, &pmb->u.mqe));
8546 		if (bf_get(lpfc_mbx_rd_conf_bbscn_def, rd_config)) {
8547 			phba->bbcredit_support = 1;
8548 			phba->sli4_hba.bbscn_params.word0 = rd_config->word8;
8549 		}
8550 
8551 		phba->sli4_hba.conf_trunk =
8552 			bf_get(lpfc_mbx_rd_conf_trunk, rd_config);
8553 		phba->sli4_hba.extents_in_use =
8554 			bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
8555 		phba->sli4_hba.max_cfg_param.max_xri =
8556 			bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
8557 		/* Reduce resource usage in kdump environment */
8558 		if (is_kdump_kernel() &&
8559 		    phba->sli4_hba.max_cfg_param.max_xri > 512)
8560 			phba->sli4_hba.max_cfg_param.max_xri = 512;
8561 		phba->sli4_hba.max_cfg_param.xri_base =
8562 			bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
8563 		phba->sli4_hba.max_cfg_param.max_vpi =
8564 			bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
8565 		/* Limit the max we support */
8566 		if (phba->sli4_hba.max_cfg_param.max_vpi > LPFC_MAX_VPORTS)
8567 			phba->sli4_hba.max_cfg_param.max_vpi = LPFC_MAX_VPORTS;
8568 		phba->sli4_hba.max_cfg_param.vpi_base =
8569 			bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
8570 		phba->sli4_hba.max_cfg_param.max_rpi =
8571 			bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
8572 		phba->sli4_hba.max_cfg_param.rpi_base =
8573 			bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
8574 		phba->sli4_hba.max_cfg_param.max_vfi =
8575 			bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
8576 		phba->sli4_hba.max_cfg_param.vfi_base =
8577 			bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
8578 		phba->sli4_hba.max_cfg_param.max_fcfi =
8579 			bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
8580 		phba->sli4_hba.max_cfg_param.max_eq =
8581 			bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
8582 		phba->sli4_hba.max_cfg_param.max_rq =
8583 			bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
8584 		phba->sli4_hba.max_cfg_param.max_wq =
8585 			bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
8586 		phba->sli4_hba.max_cfg_param.max_cq =
8587 			bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
8588 		phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
8589 		phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
8590 		phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
8591 		phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
8592 		phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
8593 				(phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
8594 		phba->max_vports = phba->max_vpi;
8595 		lpfc_map_topology(phba, rd_config);
8596 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8597 				"2003 cfg params Extents? %d "
8598 				"XRI(B:%d M:%d), "
8599 				"VPI(B:%d M:%d) "
8600 				"VFI(B:%d M:%d) "
8601 				"RPI(B:%d M:%d) "
8602 				"FCFI:%d EQ:%d CQ:%d WQ:%d RQ:%d lmt:x%x\n",
8603 				phba->sli4_hba.extents_in_use,
8604 				phba->sli4_hba.max_cfg_param.xri_base,
8605 				phba->sli4_hba.max_cfg_param.max_xri,
8606 				phba->sli4_hba.max_cfg_param.vpi_base,
8607 				phba->sli4_hba.max_cfg_param.max_vpi,
8608 				phba->sli4_hba.max_cfg_param.vfi_base,
8609 				phba->sli4_hba.max_cfg_param.max_vfi,
8610 				phba->sli4_hba.max_cfg_param.rpi_base,
8611 				phba->sli4_hba.max_cfg_param.max_rpi,
8612 				phba->sli4_hba.max_cfg_param.max_fcfi,
8613 				phba->sli4_hba.max_cfg_param.max_eq,
8614 				phba->sli4_hba.max_cfg_param.max_cq,
8615 				phba->sli4_hba.max_cfg_param.max_wq,
8616 				phba->sli4_hba.max_cfg_param.max_rq,
8617 				phba->lmt);
8618 
8619 		/*
8620 		 * Calculate queue resources based on how
8621 		 * many WQ/CQ/EQs are available.
8622 		 */
8623 		qmin = phba->sli4_hba.max_cfg_param.max_wq;
8624 		if (phba->sli4_hba.max_cfg_param.max_cq < qmin)
8625 			qmin = phba->sli4_hba.max_cfg_param.max_cq;
8626 		if (phba->sli4_hba.max_cfg_param.max_eq < qmin)
8627 			qmin = phba->sli4_hba.max_cfg_param.max_eq;
8628 		/*
8629 		 * Whats left after this can go toward NVME / FCP.
8630 		 * The minus 4 accounts for ELS, NVME LS, MBOX
8631 		 * plus one extra. When configured for
8632 		 * NVMET, FCP io channel WQs are not created.
8633 		 */
8634 		qmin -= 4;
8635 
8636 		/* Check to see if there is enough for NVME */
8637 		if ((phba->cfg_irq_chann > qmin) ||
8638 		    (phba->cfg_hdw_queue > qmin)) {
8639 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8640 					"2005 Reducing Queues - "
8641 					"FW resource limitation: "
8642 					"WQ %d CQ %d EQ %d: min %d: "
8643 					"IRQ %d HDWQ %d\n",
8644 					phba->sli4_hba.max_cfg_param.max_wq,
8645 					phba->sli4_hba.max_cfg_param.max_cq,
8646 					phba->sli4_hba.max_cfg_param.max_eq,
8647 					qmin, phba->cfg_irq_chann,
8648 					phba->cfg_hdw_queue);
8649 
8650 			if (phba->cfg_irq_chann > qmin)
8651 				phba->cfg_irq_chann = qmin;
8652 			if (phba->cfg_hdw_queue > qmin)
8653 				phba->cfg_hdw_queue = qmin;
8654 		}
8655 	}
8656 
8657 	if (rc)
8658 		goto read_cfg_out;
8659 
8660 	/* Update link speed if forced link speed is supported */
8661 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
8662 	if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
8663 		forced_link_speed =
8664 			bf_get(lpfc_mbx_rd_conf_link_speed, rd_config);
8665 		if (forced_link_speed) {
8666 			phba->hba_flag |= HBA_FORCED_LINK_SPEED;
8667 
8668 			switch (forced_link_speed) {
8669 			case LINK_SPEED_1G:
8670 				phba->cfg_link_speed =
8671 					LPFC_USER_LINK_SPEED_1G;
8672 				break;
8673 			case LINK_SPEED_2G:
8674 				phba->cfg_link_speed =
8675 					LPFC_USER_LINK_SPEED_2G;
8676 				break;
8677 			case LINK_SPEED_4G:
8678 				phba->cfg_link_speed =
8679 					LPFC_USER_LINK_SPEED_4G;
8680 				break;
8681 			case LINK_SPEED_8G:
8682 				phba->cfg_link_speed =
8683 					LPFC_USER_LINK_SPEED_8G;
8684 				break;
8685 			case LINK_SPEED_10G:
8686 				phba->cfg_link_speed =
8687 					LPFC_USER_LINK_SPEED_10G;
8688 				break;
8689 			case LINK_SPEED_16G:
8690 				phba->cfg_link_speed =
8691 					LPFC_USER_LINK_SPEED_16G;
8692 				break;
8693 			case LINK_SPEED_32G:
8694 				phba->cfg_link_speed =
8695 					LPFC_USER_LINK_SPEED_32G;
8696 				break;
8697 			case LINK_SPEED_64G:
8698 				phba->cfg_link_speed =
8699 					LPFC_USER_LINK_SPEED_64G;
8700 				break;
8701 			case 0xffff:
8702 				phba->cfg_link_speed =
8703 					LPFC_USER_LINK_SPEED_AUTO;
8704 				break;
8705 			default:
8706 				lpfc_printf_log(phba, KERN_ERR,
8707 						LOG_TRACE_EVENT,
8708 						"0047 Unrecognized link "
8709 						"speed : %d\n",
8710 						forced_link_speed);
8711 				phba->cfg_link_speed =
8712 					LPFC_USER_LINK_SPEED_AUTO;
8713 			}
8714 		}
8715 	}
8716 
8717 	/* Reset the DFT_HBA_Q_DEPTH to the max xri  */
8718 	length = phba->sli4_hba.max_cfg_param.max_xri -
8719 			lpfc_sli4_get_els_iocb_cnt(phba);
8720 	if (phba->cfg_hba_queue_depth > length) {
8721 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8722 				"3361 HBA queue depth changed from %d to %d\n",
8723 				phba->cfg_hba_queue_depth, length);
8724 		phba->cfg_hba_queue_depth = length;
8725 	}
8726 
8727 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
8728 	    LPFC_SLI_INTF_IF_TYPE_2)
8729 		goto read_cfg_out;
8730 
8731 	/* get the pf# and vf# for SLI4 if_type 2 port */
8732 	length = (sizeof(struct lpfc_mbx_get_func_cfg) -
8733 		  sizeof(struct lpfc_sli4_cfg_mhdr));
8734 	lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
8735 			 LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
8736 			 length, LPFC_SLI4_MBX_EMBED);
8737 
8738 	rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8739 	shdr = (union lpfc_sli4_cfg_shdr *)
8740 				&pmb->u.mqe.un.sli4_config.header.cfg_shdr;
8741 	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
8742 	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
8743 	if (rc2 || shdr_status || shdr_add_status) {
8744 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8745 				"3026 Mailbox failed , mbxCmd x%x "
8746 				"GET_FUNCTION_CONFIG, mbxStatus x%x\n",
8747 				bf_get(lpfc_mqe_command, &pmb->u.mqe),
8748 				bf_get(lpfc_mqe_status, &pmb->u.mqe));
8749 		goto read_cfg_out;
8750 	}
8751 
8752 	/* search for fc_fcoe resrouce descriptor */
8753 	get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
8754 
8755 	pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
8756 	desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
8757 	length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
8758 	if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
8759 		length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
8760 	else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
8761 		goto read_cfg_out;
8762 
8763 	for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
8764 		desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
8765 		if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
8766 		    bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
8767 			phba->sli4_hba.iov.pf_number =
8768 				bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
8769 			phba->sli4_hba.iov.vf_number =
8770 				bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
8771 			break;
8772 		}
8773 	}
8774 
8775 	if (i < LPFC_RSRC_DESC_MAX_NUM)
8776 		lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8777 				"3027 GET_FUNCTION_CONFIG: pf_number:%d, "
8778 				"vf_number:%d\n", phba->sli4_hba.iov.pf_number,
8779 				phba->sli4_hba.iov.vf_number);
8780 	else
8781 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8782 				"3028 GET_FUNCTION_CONFIG: failed to find "
8783 				"Resource Descriptor:x%x\n",
8784 				LPFC_RSRC_DESC_TYPE_FCFCOE);
8785 
8786 read_cfg_out:
8787 	mempool_free(pmb, phba->mbox_mem_pool);
8788 	return rc;
8789 }
8790 
8791 /**
8792  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
8793  * @phba: pointer to lpfc hba data structure.
8794  *
8795  * This routine is invoked to setup the port-side endian order when
8796  * the port if_type is 0.  This routine has no function for other
8797  * if_types.
8798  *
8799  * Return codes
8800  * 	0 - successful
8801  * 	-ENOMEM - No available memory
8802  *      -EIO - The mailbox failed to complete successfully.
8803  **/
8804 static int
8805 lpfc_setup_endian_order(struct lpfc_hba *phba)
8806 {
8807 	LPFC_MBOXQ_t *mboxq;
8808 	uint32_t if_type, rc = 0;
8809 	uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
8810 				      HOST_ENDIAN_HIGH_WORD1};
8811 
8812 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
8813 	switch (if_type) {
8814 	case LPFC_SLI_INTF_IF_TYPE_0:
8815 		mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
8816 						       GFP_KERNEL);
8817 		if (!mboxq) {
8818 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8819 					"0492 Unable to allocate memory for "
8820 					"issuing SLI_CONFIG_SPECIAL mailbox "
8821 					"command\n");
8822 			return -ENOMEM;
8823 		}
8824 
8825 		/*
8826 		 * The SLI4_CONFIG_SPECIAL mailbox command requires the first
8827 		 * two words to contain special data values and no other data.
8828 		 */
8829 		memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
8830 		memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
8831 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8832 		if (rc != MBX_SUCCESS) {
8833 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8834 					"0493 SLI_CONFIG_SPECIAL mailbox "
8835 					"failed with status x%x\n",
8836 					rc);
8837 			rc = -EIO;
8838 		}
8839 		mempool_free(mboxq, phba->mbox_mem_pool);
8840 		break;
8841 	case LPFC_SLI_INTF_IF_TYPE_6:
8842 	case LPFC_SLI_INTF_IF_TYPE_2:
8843 	case LPFC_SLI_INTF_IF_TYPE_1:
8844 	default:
8845 		break;
8846 	}
8847 	return rc;
8848 }
8849 
8850 /**
8851  * lpfc_sli4_queue_verify - Verify and update EQ counts
8852  * @phba: pointer to lpfc hba data structure.
8853  *
8854  * This routine is invoked to check the user settable queue counts for EQs.
8855  * After this routine is called the counts will be set to valid values that
8856  * adhere to the constraints of the system's interrupt vectors and the port's
8857  * queue resources.
8858  *
8859  * Return codes
8860  *      0 - successful
8861  *      -ENOMEM - No available memory
8862  **/
8863 static int
8864 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
8865 {
8866 	/*
8867 	 * Sanity check for configured queue parameters against the run-time
8868 	 * device parameters
8869 	 */
8870 
8871 	if (phba->nvmet_support) {
8872 		if (phba->cfg_hdw_queue < phba->cfg_nvmet_mrq)
8873 			phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
8874 		if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
8875 			phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
8876 	}
8877 
8878 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8879 			"2574 IO channels: hdwQ %d IRQ %d MRQ: %d\n",
8880 			phba->cfg_hdw_queue, phba->cfg_irq_chann,
8881 			phba->cfg_nvmet_mrq);
8882 
8883 	/* Get EQ depth from module parameter, fake the default for now */
8884 	phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
8885 	phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
8886 
8887 	/* Get CQ depth from module parameter, fake the default for now */
8888 	phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
8889 	phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
8890 	return 0;
8891 }
8892 
8893 static int
8894 lpfc_alloc_io_wq_cq(struct lpfc_hba *phba, int idx)
8895 {
8896 	struct lpfc_queue *qdesc;
8897 	u32 wqesize;
8898 	int cpu;
8899 
8900 	cpu = lpfc_find_cpu_handle(phba, idx, LPFC_FIND_BY_HDWQ);
8901 	/* Create Fast Path IO CQs */
8902 	if (phba->enab_exp_wqcq_pages)
8903 		/* Increase the CQ size when WQEs contain an embedded cdb */
8904 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
8905 					      phba->sli4_hba.cq_esize,
8906 					      LPFC_CQE_EXP_COUNT, cpu);
8907 
8908 	else
8909 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8910 					      phba->sli4_hba.cq_esize,
8911 					      phba->sli4_hba.cq_ecount, cpu);
8912 	if (!qdesc) {
8913 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8914 				"0499 Failed allocate fast-path IO CQ (%d)\n",
8915 				idx);
8916 		return 1;
8917 	}
8918 	qdesc->qe_valid = 1;
8919 	qdesc->hdwq = idx;
8920 	qdesc->chann = cpu;
8921 	phba->sli4_hba.hdwq[idx].io_cq = qdesc;
8922 
8923 	/* Create Fast Path IO WQs */
8924 	if (phba->enab_exp_wqcq_pages) {
8925 		/* Increase the WQ size when WQEs contain an embedded cdb */
8926 		wqesize = (phba->fcp_embed_io) ?
8927 			LPFC_WQE128_SIZE : phba->sli4_hba.wq_esize;
8928 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_EXPANDED_PAGE_SIZE,
8929 					      wqesize,
8930 					      LPFC_WQE_EXP_COUNT, cpu);
8931 	} else
8932 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
8933 					      phba->sli4_hba.wq_esize,
8934 					      phba->sli4_hba.wq_ecount, cpu);
8935 
8936 	if (!qdesc) {
8937 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8938 				"0503 Failed allocate fast-path IO WQ (%d)\n",
8939 				idx);
8940 		return 1;
8941 	}
8942 	qdesc->hdwq = idx;
8943 	qdesc->chann = cpu;
8944 	phba->sli4_hba.hdwq[idx].io_wq = qdesc;
8945 	list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
8946 	return 0;
8947 }
8948 
8949 /**
8950  * lpfc_sli4_queue_create - Create all the SLI4 queues
8951  * @phba: pointer to lpfc hba data structure.
8952  *
8953  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
8954  * operation. For each SLI4 queue type, the parameters such as queue entry
8955  * count (queue depth) shall be taken from the module parameter. For now,
8956  * we just use some constant number as place holder.
8957  *
8958  * Return codes
8959  *      0 - successful
8960  *      -ENOMEM - No availble memory
8961  *      -EIO - The mailbox failed to complete successfully.
8962  **/
8963 int
8964 lpfc_sli4_queue_create(struct lpfc_hba *phba)
8965 {
8966 	struct lpfc_queue *qdesc;
8967 	int idx, cpu, eqcpu;
8968 	struct lpfc_sli4_hdw_queue *qp;
8969 	struct lpfc_vector_map_info *cpup;
8970 	struct lpfc_vector_map_info *eqcpup;
8971 	struct lpfc_eq_intr_info *eqi;
8972 
8973 	/*
8974 	 * Create HBA Record arrays.
8975 	 * Both NVME and FCP will share that same vectors / EQs
8976 	 */
8977 	phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
8978 	phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
8979 	phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
8980 	phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
8981 	phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
8982 	phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
8983 	phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
8984 	phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
8985 	phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
8986 	phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
8987 
8988 	if (!phba->sli4_hba.hdwq) {
8989 		phba->sli4_hba.hdwq = kcalloc(
8990 			phba->cfg_hdw_queue, sizeof(struct lpfc_sli4_hdw_queue),
8991 			GFP_KERNEL);
8992 		if (!phba->sli4_hba.hdwq) {
8993 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
8994 					"6427 Failed allocate memory for "
8995 					"fast-path Hardware Queue array\n");
8996 			goto out_error;
8997 		}
8998 		/* Prepare hardware queues to take IO buffers */
8999 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9000 			qp = &phba->sli4_hba.hdwq[idx];
9001 			spin_lock_init(&qp->io_buf_list_get_lock);
9002 			spin_lock_init(&qp->io_buf_list_put_lock);
9003 			INIT_LIST_HEAD(&qp->lpfc_io_buf_list_get);
9004 			INIT_LIST_HEAD(&qp->lpfc_io_buf_list_put);
9005 			qp->get_io_bufs = 0;
9006 			qp->put_io_bufs = 0;
9007 			qp->total_io_bufs = 0;
9008 			spin_lock_init(&qp->abts_io_buf_list_lock);
9009 			INIT_LIST_HEAD(&qp->lpfc_abts_io_buf_list);
9010 			qp->abts_scsi_io_bufs = 0;
9011 			qp->abts_nvme_io_bufs = 0;
9012 			INIT_LIST_HEAD(&qp->sgl_list);
9013 			INIT_LIST_HEAD(&qp->cmd_rsp_buf_list);
9014 			spin_lock_init(&qp->hdwq_lock);
9015 		}
9016 	}
9017 
9018 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9019 		if (phba->nvmet_support) {
9020 			phba->sli4_hba.nvmet_cqset = kcalloc(
9021 					phba->cfg_nvmet_mrq,
9022 					sizeof(struct lpfc_queue *),
9023 					GFP_KERNEL);
9024 			if (!phba->sli4_hba.nvmet_cqset) {
9025 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9026 					"3121 Fail allocate memory for "
9027 					"fast-path CQ set array\n");
9028 				goto out_error;
9029 			}
9030 			phba->sli4_hba.nvmet_mrq_hdr = kcalloc(
9031 					phba->cfg_nvmet_mrq,
9032 					sizeof(struct lpfc_queue *),
9033 					GFP_KERNEL);
9034 			if (!phba->sli4_hba.nvmet_mrq_hdr) {
9035 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9036 					"3122 Fail allocate memory for "
9037 					"fast-path RQ set hdr array\n");
9038 				goto out_error;
9039 			}
9040 			phba->sli4_hba.nvmet_mrq_data = kcalloc(
9041 					phba->cfg_nvmet_mrq,
9042 					sizeof(struct lpfc_queue *),
9043 					GFP_KERNEL);
9044 			if (!phba->sli4_hba.nvmet_mrq_data) {
9045 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9046 					"3124 Fail allocate memory for "
9047 					"fast-path RQ set data array\n");
9048 				goto out_error;
9049 			}
9050 		}
9051 	}
9052 
9053 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
9054 
9055 	/* Create HBA Event Queues (EQs) */
9056 	for_each_present_cpu(cpu) {
9057 		/* We only want to create 1 EQ per vector, even though
9058 		 * multiple CPUs might be using that vector. so only
9059 		 * selects the CPUs that are LPFC_CPU_FIRST_IRQ.
9060 		 */
9061 		cpup = &phba->sli4_hba.cpu_map[cpu];
9062 		if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
9063 			continue;
9064 
9065 		/* Get a ptr to the Hardware Queue associated with this CPU */
9066 		qp = &phba->sli4_hba.hdwq[cpup->hdwq];
9067 
9068 		/* Allocate an EQ */
9069 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9070 					      phba->sli4_hba.eq_esize,
9071 					      phba->sli4_hba.eq_ecount, cpu);
9072 		if (!qdesc) {
9073 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9074 					"0497 Failed allocate EQ (%d)\n",
9075 					cpup->hdwq);
9076 			goto out_error;
9077 		}
9078 		qdesc->qe_valid = 1;
9079 		qdesc->hdwq = cpup->hdwq;
9080 		qdesc->chann = cpu; /* First CPU this EQ is affinitized to */
9081 		qdesc->last_cpu = qdesc->chann;
9082 
9083 		/* Save the allocated EQ in the Hardware Queue */
9084 		qp->hba_eq = qdesc;
9085 
9086 		eqi = per_cpu_ptr(phba->sli4_hba.eq_info, qdesc->last_cpu);
9087 		list_add(&qdesc->cpu_list, &eqi->list);
9088 	}
9089 
9090 	/* Now we need to populate the other Hardware Queues, that share
9091 	 * an IRQ vector, with the associated EQ ptr.
9092 	 */
9093 	for_each_present_cpu(cpu) {
9094 		cpup = &phba->sli4_hba.cpu_map[cpu];
9095 
9096 		/* Check for EQ already allocated in previous loop */
9097 		if (cpup->flag & LPFC_CPU_FIRST_IRQ)
9098 			continue;
9099 
9100 		/* Check for multiple CPUs per hdwq */
9101 		qp = &phba->sli4_hba.hdwq[cpup->hdwq];
9102 		if (qp->hba_eq)
9103 			continue;
9104 
9105 		/* We need to share an EQ for this hdwq */
9106 		eqcpu = lpfc_find_cpu_handle(phba, cpup->eq, LPFC_FIND_BY_EQ);
9107 		eqcpup = &phba->sli4_hba.cpu_map[eqcpu];
9108 		qp->hba_eq = phba->sli4_hba.hdwq[eqcpup->hdwq].hba_eq;
9109 	}
9110 
9111 	/* Allocate IO Path SLI4 CQ/WQs */
9112 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9113 		if (lpfc_alloc_io_wq_cq(phba, idx))
9114 			goto out_error;
9115 	}
9116 
9117 	if (phba->nvmet_support) {
9118 		for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
9119 			cpu = lpfc_find_cpu_handle(phba, idx,
9120 						   LPFC_FIND_BY_HDWQ);
9121 			qdesc = lpfc_sli4_queue_alloc(phba,
9122 						      LPFC_DEFAULT_PAGE_SIZE,
9123 						      phba->sli4_hba.cq_esize,
9124 						      phba->sli4_hba.cq_ecount,
9125 						      cpu);
9126 			if (!qdesc) {
9127 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9128 						"3142 Failed allocate NVME "
9129 						"CQ Set (%d)\n", idx);
9130 				goto out_error;
9131 			}
9132 			qdesc->qe_valid = 1;
9133 			qdesc->hdwq = idx;
9134 			qdesc->chann = cpu;
9135 			phba->sli4_hba.nvmet_cqset[idx] = qdesc;
9136 		}
9137 	}
9138 
9139 	/*
9140 	 * Create Slow Path Completion Queues (CQs)
9141 	 */
9142 
9143 	cpu = lpfc_find_cpu_handle(phba, 0, LPFC_FIND_BY_EQ);
9144 	/* Create slow-path Mailbox Command Complete Queue */
9145 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9146 				      phba->sli4_hba.cq_esize,
9147 				      phba->sli4_hba.cq_ecount, cpu);
9148 	if (!qdesc) {
9149 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9150 				"0500 Failed allocate slow-path mailbox CQ\n");
9151 		goto out_error;
9152 	}
9153 	qdesc->qe_valid = 1;
9154 	phba->sli4_hba.mbx_cq = qdesc;
9155 
9156 	/* Create slow-path ELS Complete Queue */
9157 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9158 				      phba->sli4_hba.cq_esize,
9159 				      phba->sli4_hba.cq_ecount, cpu);
9160 	if (!qdesc) {
9161 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9162 				"0501 Failed allocate slow-path ELS CQ\n");
9163 		goto out_error;
9164 	}
9165 	qdesc->qe_valid = 1;
9166 	qdesc->chann = cpu;
9167 	phba->sli4_hba.els_cq = qdesc;
9168 
9169 
9170 	/*
9171 	 * Create Slow Path Work Queues (WQs)
9172 	 */
9173 
9174 	/* Create Mailbox Command Queue */
9175 
9176 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9177 				      phba->sli4_hba.mq_esize,
9178 				      phba->sli4_hba.mq_ecount, cpu);
9179 	if (!qdesc) {
9180 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9181 				"0505 Failed allocate slow-path MQ\n");
9182 		goto out_error;
9183 	}
9184 	qdesc->chann = cpu;
9185 	phba->sli4_hba.mbx_wq = qdesc;
9186 
9187 	/*
9188 	 * Create ELS Work Queues
9189 	 */
9190 
9191 	/* Create slow-path ELS Work Queue */
9192 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9193 				      phba->sli4_hba.wq_esize,
9194 				      phba->sli4_hba.wq_ecount, cpu);
9195 	if (!qdesc) {
9196 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9197 				"0504 Failed allocate slow-path ELS WQ\n");
9198 		goto out_error;
9199 	}
9200 	qdesc->chann = cpu;
9201 	phba->sli4_hba.els_wq = qdesc;
9202 	list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
9203 
9204 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9205 		/* Create NVME LS Complete Queue */
9206 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9207 					      phba->sli4_hba.cq_esize,
9208 					      phba->sli4_hba.cq_ecount, cpu);
9209 		if (!qdesc) {
9210 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9211 					"6079 Failed allocate NVME LS CQ\n");
9212 			goto out_error;
9213 		}
9214 		qdesc->chann = cpu;
9215 		qdesc->qe_valid = 1;
9216 		phba->sli4_hba.nvmels_cq = qdesc;
9217 
9218 		/* Create NVME LS Work Queue */
9219 		qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9220 					      phba->sli4_hba.wq_esize,
9221 					      phba->sli4_hba.wq_ecount, cpu);
9222 		if (!qdesc) {
9223 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9224 					"6080 Failed allocate NVME LS WQ\n");
9225 			goto out_error;
9226 		}
9227 		qdesc->chann = cpu;
9228 		phba->sli4_hba.nvmels_wq = qdesc;
9229 		list_add_tail(&qdesc->wq_list, &phba->sli4_hba.lpfc_wq_list);
9230 	}
9231 
9232 	/*
9233 	 * Create Receive Queue (RQ)
9234 	 */
9235 
9236 	/* Create Receive Queue for header */
9237 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9238 				      phba->sli4_hba.rq_esize,
9239 				      phba->sli4_hba.rq_ecount, cpu);
9240 	if (!qdesc) {
9241 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9242 				"0506 Failed allocate receive HRQ\n");
9243 		goto out_error;
9244 	}
9245 	phba->sli4_hba.hdr_rq = qdesc;
9246 
9247 	/* Create Receive Queue for data */
9248 	qdesc = lpfc_sli4_queue_alloc(phba, LPFC_DEFAULT_PAGE_SIZE,
9249 				      phba->sli4_hba.rq_esize,
9250 				      phba->sli4_hba.rq_ecount, cpu);
9251 	if (!qdesc) {
9252 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9253 				"0507 Failed allocate receive DRQ\n");
9254 		goto out_error;
9255 	}
9256 	phba->sli4_hba.dat_rq = qdesc;
9257 
9258 	if ((phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) &&
9259 	    phba->nvmet_support) {
9260 		for (idx = 0; idx < phba->cfg_nvmet_mrq; idx++) {
9261 			cpu = lpfc_find_cpu_handle(phba, idx,
9262 						   LPFC_FIND_BY_HDWQ);
9263 			/* Create NVMET Receive Queue for header */
9264 			qdesc = lpfc_sli4_queue_alloc(phba,
9265 						      LPFC_DEFAULT_PAGE_SIZE,
9266 						      phba->sli4_hba.rq_esize,
9267 						      LPFC_NVMET_RQE_DEF_COUNT,
9268 						      cpu);
9269 			if (!qdesc) {
9270 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9271 						"3146 Failed allocate "
9272 						"receive HRQ\n");
9273 				goto out_error;
9274 			}
9275 			qdesc->hdwq = idx;
9276 			phba->sli4_hba.nvmet_mrq_hdr[idx] = qdesc;
9277 
9278 			/* Only needed for header of RQ pair */
9279 			qdesc->rqbp = kzalloc_node(sizeof(*qdesc->rqbp),
9280 						   GFP_KERNEL,
9281 						   cpu_to_node(cpu));
9282 			if (qdesc->rqbp == NULL) {
9283 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9284 						"6131 Failed allocate "
9285 						"Header RQBP\n");
9286 				goto out_error;
9287 			}
9288 
9289 			/* Put list in known state in case driver load fails. */
9290 			INIT_LIST_HEAD(&qdesc->rqbp->rqb_buffer_list);
9291 
9292 			/* Create NVMET Receive Queue for data */
9293 			qdesc = lpfc_sli4_queue_alloc(phba,
9294 						      LPFC_DEFAULT_PAGE_SIZE,
9295 						      phba->sli4_hba.rq_esize,
9296 						      LPFC_NVMET_RQE_DEF_COUNT,
9297 						      cpu);
9298 			if (!qdesc) {
9299 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9300 						"3156 Failed allocate "
9301 						"receive DRQ\n");
9302 				goto out_error;
9303 			}
9304 			qdesc->hdwq = idx;
9305 			phba->sli4_hba.nvmet_mrq_data[idx] = qdesc;
9306 		}
9307 	}
9308 
9309 	/* Clear NVME stats */
9310 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9311 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9312 			memset(&phba->sli4_hba.hdwq[idx].nvme_cstat, 0,
9313 			       sizeof(phba->sli4_hba.hdwq[idx].nvme_cstat));
9314 		}
9315 	}
9316 
9317 	/* Clear SCSI stats */
9318 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP) {
9319 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9320 			memset(&phba->sli4_hba.hdwq[idx].scsi_cstat, 0,
9321 			       sizeof(phba->sli4_hba.hdwq[idx].scsi_cstat));
9322 		}
9323 	}
9324 
9325 	return 0;
9326 
9327 out_error:
9328 	lpfc_sli4_queue_destroy(phba);
9329 	return -ENOMEM;
9330 }
9331 
9332 static inline void
9333 __lpfc_sli4_release_queue(struct lpfc_queue **qp)
9334 {
9335 	if (*qp != NULL) {
9336 		lpfc_sli4_queue_free(*qp);
9337 		*qp = NULL;
9338 	}
9339 }
9340 
9341 static inline void
9342 lpfc_sli4_release_queues(struct lpfc_queue ***qs, int max)
9343 {
9344 	int idx;
9345 
9346 	if (*qs == NULL)
9347 		return;
9348 
9349 	for (idx = 0; idx < max; idx++)
9350 		__lpfc_sli4_release_queue(&(*qs)[idx]);
9351 
9352 	kfree(*qs);
9353 	*qs = NULL;
9354 }
9355 
9356 static inline void
9357 lpfc_sli4_release_hdwq(struct lpfc_hba *phba)
9358 {
9359 	struct lpfc_sli4_hdw_queue *hdwq;
9360 	struct lpfc_queue *eq;
9361 	uint32_t idx;
9362 
9363 	hdwq = phba->sli4_hba.hdwq;
9364 
9365 	/* Loop thru all Hardware Queues */
9366 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
9367 		/* Free the CQ/WQ corresponding to the Hardware Queue */
9368 		lpfc_sli4_queue_free(hdwq[idx].io_cq);
9369 		lpfc_sli4_queue_free(hdwq[idx].io_wq);
9370 		hdwq[idx].hba_eq = NULL;
9371 		hdwq[idx].io_cq = NULL;
9372 		hdwq[idx].io_wq = NULL;
9373 		if (phba->cfg_xpsgl && !phba->nvmet_support)
9374 			lpfc_free_sgl_per_hdwq(phba, &hdwq[idx]);
9375 		lpfc_free_cmd_rsp_buf_per_hdwq(phba, &hdwq[idx]);
9376 	}
9377 	/* Loop thru all IRQ vectors */
9378 	for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
9379 		/* Free the EQ corresponding to the IRQ vector */
9380 		eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
9381 		lpfc_sli4_queue_free(eq);
9382 		phba->sli4_hba.hba_eq_hdl[idx].eq = NULL;
9383 	}
9384 }
9385 
9386 /**
9387  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
9388  * @phba: pointer to lpfc hba data structure.
9389  *
9390  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
9391  * operation.
9392  *
9393  * Return codes
9394  *      0 - successful
9395  *      -ENOMEM - No available memory
9396  *      -EIO - The mailbox failed to complete successfully.
9397  **/
9398 void
9399 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
9400 {
9401 	/*
9402 	 * Set FREE_INIT before beginning to free the queues.
9403 	 * Wait until the users of queues to acknowledge to
9404 	 * release queues by clearing FREE_WAIT.
9405 	 */
9406 	spin_lock_irq(&phba->hbalock);
9407 	phba->sli.sli_flag |= LPFC_QUEUE_FREE_INIT;
9408 	while (phba->sli.sli_flag & LPFC_QUEUE_FREE_WAIT) {
9409 		spin_unlock_irq(&phba->hbalock);
9410 		msleep(20);
9411 		spin_lock_irq(&phba->hbalock);
9412 	}
9413 	spin_unlock_irq(&phba->hbalock);
9414 
9415 	lpfc_sli4_cleanup_poll_list(phba);
9416 
9417 	/* Release HBA eqs */
9418 	if (phba->sli4_hba.hdwq)
9419 		lpfc_sli4_release_hdwq(phba);
9420 
9421 	if (phba->nvmet_support) {
9422 		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_cqset,
9423 					 phba->cfg_nvmet_mrq);
9424 
9425 		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_hdr,
9426 					 phba->cfg_nvmet_mrq);
9427 		lpfc_sli4_release_queues(&phba->sli4_hba.nvmet_mrq_data,
9428 					 phba->cfg_nvmet_mrq);
9429 	}
9430 
9431 	/* Release mailbox command work queue */
9432 	__lpfc_sli4_release_queue(&phba->sli4_hba.mbx_wq);
9433 
9434 	/* Release ELS work queue */
9435 	__lpfc_sli4_release_queue(&phba->sli4_hba.els_wq);
9436 
9437 	/* Release ELS work queue */
9438 	__lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_wq);
9439 
9440 	/* Release unsolicited receive queue */
9441 	__lpfc_sli4_release_queue(&phba->sli4_hba.hdr_rq);
9442 	__lpfc_sli4_release_queue(&phba->sli4_hba.dat_rq);
9443 
9444 	/* Release ELS complete queue */
9445 	__lpfc_sli4_release_queue(&phba->sli4_hba.els_cq);
9446 
9447 	/* Release NVME LS complete queue */
9448 	__lpfc_sli4_release_queue(&phba->sli4_hba.nvmels_cq);
9449 
9450 	/* Release mailbox command complete queue */
9451 	__lpfc_sli4_release_queue(&phba->sli4_hba.mbx_cq);
9452 
9453 	/* Everything on this list has been freed */
9454 	INIT_LIST_HEAD(&phba->sli4_hba.lpfc_wq_list);
9455 
9456 	/* Done with freeing the queues */
9457 	spin_lock_irq(&phba->hbalock);
9458 	phba->sli.sli_flag &= ~LPFC_QUEUE_FREE_INIT;
9459 	spin_unlock_irq(&phba->hbalock);
9460 }
9461 
9462 int
9463 lpfc_free_rq_buffer(struct lpfc_hba *phba, struct lpfc_queue *rq)
9464 {
9465 	struct lpfc_rqb *rqbp;
9466 	struct lpfc_dmabuf *h_buf;
9467 	struct rqb_dmabuf *rqb_buffer;
9468 
9469 	rqbp = rq->rqbp;
9470 	while (!list_empty(&rqbp->rqb_buffer_list)) {
9471 		list_remove_head(&rqbp->rqb_buffer_list, h_buf,
9472 				 struct lpfc_dmabuf, list);
9473 
9474 		rqb_buffer = container_of(h_buf, struct rqb_dmabuf, hbuf);
9475 		(rqbp->rqb_free_buffer)(phba, rqb_buffer);
9476 		rqbp->buffer_count--;
9477 	}
9478 	return 1;
9479 }
9480 
9481 static int
9482 lpfc_create_wq_cq(struct lpfc_hba *phba, struct lpfc_queue *eq,
9483 	struct lpfc_queue *cq, struct lpfc_queue *wq, uint16_t *cq_map,
9484 	int qidx, uint32_t qtype)
9485 {
9486 	struct lpfc_sli_ring *pring;
9487 	int rc;
9488 
9489 	if (!eq || !cq || !wq) {
9490 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9491 			"6085 Fast-path %s (%d) not allocated\n",
9492 			((eq) ? ((cq) ? "WQ" : "CQ") : "EQ"), qidx);
9493 		return -ENOMEM;
9494 	}
9495 
9496 	/* create the Cq first */
9497 	rc = lpfc_cq_create(phba, cq, eq,
9498 			(qtype == LPFC_MBOX) ? LPFC_MCQ : LPFC_WCQ, qtype);
9499 	if (rc) {
9500 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9501 				"6086 Failed setup of CQ (%d), rc = 0x%x\n",
9502 				qidx, (uint32_t)rc);
9503 		return rc;
9504 	}
9505 
9506 	if (qtype != LPFC_MBOX) {
9507 		/* Setup cq_map for fast lookup */
9508 		if (cq_map)
9509 			*cq_map = cq->queue_id;
9510 
9511 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9512 			"6087 CQ setup: cq[%d]-id=%d, parent eq[%d]-id=%d\n",
9513 			qidx, cq->queue_id, qidx, eq->queue_id);
9514 
9515 		/* create the wq */
9516 		rc = lpfc_wq_create(phba, wq, cq, qtype);
9517 		if (rc) {
9518 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9519 				"4618 Fail setup fastpath WQ (%d), rc = 0x%x\n",
9520 				qidx, (uint32_t)rc);
9521 			/* no need to tear down cq - caller will do so */
9522 			return rc;
9523 		}
9524 
9525 		/* Bind this CQ/WQ to the NVME ring */
9526 		pring = wq->pring;
9527 		pring->sli.sli4.wqp = (void *)wq;
9528 		cq->pring = pring;
9529 
9530 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9531 			"2593 WQ setup: wq[%d]-id=%d assoc=%d, cq[%d]-id=%d\n",
9532 			qidx, wq->queue_id, wq->assoc_qid, qidx, cq->queue_id);
9533 	} else {
9534 		rc = lpfc_mq_create(phba, wq, cq, LPFC_MBOX);
9535 		if (rc) {
9536 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9537 					"0539 Failed setup of slow-path MQ: "
9538 					"rc = 0x%x\n", rc);
9539 			/* no need to tear down cq - caller will do so */
9540 			return rc;
9541 		}
9542 
9543 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9544 			"2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
9545 			phba->sli4_hba.mbx_wq->queue_id,
9546 			phba->sli4_hba.mbx_cq->queue_id);
9547 	}
9548 
9549 	return 0;
9550 }
9551 
9552 /**
9553  * lpfc_setup_cq_lookup - Setup the CQ lookup table
9554  * @phba: pointer to lpfc hba data structure.
9555  *
9556  * This routine will populate the cq_lookup table by all
9557  * available CQ queue_id's.
9558  **/
9559 static void
9560 lpfc_setup_cq_lookup(struct lpfc_hba *phba)
9561 {
9562 	struct lpfc_queue *eq, *childq;
9563 	int qidx;
9564 
9565 	memset(phba->sli4_hba.cq_lookup, 0,
9566 	       (sizeof(struct lpfc_queue *) * (phba->sli4_hba.cq_max + 1)));
9567 	/* Loop thru all IRQ vectors */
9568 	for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9569 		/* Get the EQ corresponding to the IRQ vector */
9570 		eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
9571 		if (!eq)
9572 			continue;
9573 		/* Loop through all CQs associated with that EQ */
9574 		list_for_each_entry(childq, &eq->child_list, list) {
9575 			if (childq->queue_id > phba->sli4_hba.cq_max)
9576 				continue;
9577 			if (childq->subtype == LPFC_IO)
9578 				phba->sli4_hba.cq_lookup[childq->queue_id] =
9579 					childq;
9580 		}
9581 	}
9582 }
9583 
9584 /**
9585  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
9586  * @phba: pointer to lpfc hba data structure.
9587  *
9588  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
9589  * operation.
9590  *
9591  * Return codes
9592  *      0 - successful
9593  *      -ENOMEM - No available memory
9594  *      -EIO - The mailbox failed to complete successfully.
9595  **/
9596 int
9597 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
9598 {
9599 	uint32_t shdr_status, shdr_add_status;
9600 	union lpfc_sli4_cfg_shdr *shdr;
9601 	struct lpfc_vector_map_info *cpup;
9602 	struct lpfc_sli4_hdw_queue *qp;
9603 	LPFC_MBOXQ_t *mboxq;
9604 	int qidx, cpu;
9605 	uint32_t length, usdelay;
9606 	int rc = -ENOMEM;
9607 
9608 	/* Check for dual-ULP support */
9609 	mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9610 	if (!mboxq) {
9611 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9612 				"3249 Unable to allocate memory for "
9613 				"QUERY_FW_CFG mailbox command\n");
9614 		return -ENOMEM;
9615 	}
9616 	length = (sizeof(struct lpfc_mbx_query_fw_config) -
9617 		  sizeof(struct lpfc_sli4_cfg_mhdr));
9618 	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
9619 			 LPFC_MBOX_OPCODE_QUERY_FW_CFG,
9620 			 length, LPFC_SLI4_MBX_EMBED);
9621 
9622 	rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
9623 
9624 	shdr = (union lpfc_sli4_cfg_shdr *)
9625 			&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
9626 	shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9627 	shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9628 	if (shdr_status || shdr_add_status || rc) {
9629 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9630 				"3250 QUERY_FW_CFG mailbox failed with status "
9631 				"x%x add_status x%x, mbx status x%x\n",
9632 				shdr_status, shdr_add_status, rc);
9633 		if (rc != MBX_TIMEOUT)
9634 			mempool_free(mboxq, phba->mbox_mem_pool);
9635 		rc = -ENXIO;
9636 		goto out_error;
9637 	}
9638 
9639 	phba->sli4_hba.fw_func_mode =
9640 			mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;
9641 	phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode;
9642 	phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode;
9643 	phba->sli4_hba.physical_port =
9644 			mboxq->u.mqe.un.query_fw_cfg.rsp.physical_port;
9645 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9646 			"3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, "
9647 			"ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode,
9648 			phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode);
9649 
9650 	if (rc != MBX_TIMEOUT)
9651 		mempool_free(mboxq, phba->mbox_mem_pool);
9652 
9653 	/*
9654 	 * Set up HBA Event Queues (EQs)
9655 	 */
9656 	qp = phba->sli4_hba.hdwq;
9657 
9658 	/* Set up HBA event queue */
9659 	if (!qp) {
9660 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9661 				"3147 Fast-path EQs not allocated\n");
9662 		rc = -ENOMEM;
9663 		goto out_error;
9664 	}
9665 
9666 	/* Loop thru all IRQ vectors */
9667 	for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
9668 		/* Create HBA Event Queues (EQs) in order */
9669 		for_each_present_cpu(cpu) {
9670 			cpup = &phba->sli4_hba.cpu_map[cpu];
9671 
9672 			/* Look for the CPU thats using that vector with
9673 			 * LPFC_CPU_FIRST_IRQ set.
9674 			 */
9675 			if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
9676 				continue;
9677 			if (qidx != cpup->eq)
9678 				continue;
9679 
9680 			/* Create an EQ for that vector */
9681 			rc = lpfc_eq_create(phba, qp[cpup->hdwq].hba_eq,
9682 					    phba->cfg_fcp_imax);
9683 			if (rc) {
9684 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9685 						"0523 Failed setup of fast-path"
9686 						" EQ (%d), rc = 0x%x\n",
9687 						cpup->eq, (uint32_t)rc);
9688 				goto out_destroy;
9689 			}
9690 
9691 			/* Save the EQ for that vector in the hba_eq_hdl */
9692 			phba->sli4_hba.hba_eq_hdl[cpup->eq].eq =
9693 				qp[cpup->hdwq].hba_eq;
9694 
9695 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9696 					"2584 HBA EQ setup: queue[%d]-id=%d\n",
9697 					cpup->eq,
9698 					qp[cpup->hdwq].hba_eq->queue_id);
9699 		}
9700 	}
9701 
9702 	/* Loop thru all Hardware Queues */
9703 	for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
9704 		cpu = lpfc_find_cpu_handle(phba, qidx, LPFC_FIND_BY_HDWQ);
9705 		cpup = &phba->sli4_hba.cpu_map[cpu];
9706 
9707 		/* Create the CQ/WQ corresponding to the Hardware Queue */
9708 		rc = lpfc_create_wq_cq(phba,
9709 				       phba->sli4_hba.hdwq[cpup->hdwq].hba_eq,
9710 				       qp[qidx].io_cq,
9711 				       qp[qidx].io_wq,
9712 				       &phba->sli4_hba.hdwq[qidx].io_cq_map,
9713 				       qidx,
9714 				       LPFC_IO);
9715 		if (rc) {
9716 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9717 					"0535 Failed to setup fastpath "
9718 					"IO WQ/CQ (%d), rc = 0x%x\n",
9719 					qidx, (uint32_t)rc);
9720 			goto out_destroy;
9721 		}
9722 	}
9723 
9724 	/*
9725 	 * Set up Slow Path Complete Queues (CQs)
9726 	 */
9727 
9728 	/* Set up slow-path MBOX CQ/MQ */
9729 
9730 	if (!phba->sli4_hba.mbx_cq || !phba->sli4_hba.mbx_wq) {
9731 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9732 				"0528 %s not allocated\n",
9733 				phba->sli4_hba.mbx_cq ?
9734 				"Mailbox WQ" : "Mailbox CQ");
9735 		rc = -ENOMEM;
9736 		goto out_destroy;
9737 	}
9738 
9739 	rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9740 			       phba->sli4_hba.mbx_cq,
9741 			       phba->sli4_hba.mbx_wq,
9742 			       NULL, 0, LPFC_MBOX);
9743 	if (rc) {
9744 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9745 			"0529 Failed setup of mailbox WQ/CQ: rc = 0x%x\n",
9746 			(uint32_t)rc);
9747 		goto out_destroy;
9748 	}
9749 	if (phba->nvmet_support) {
9750 		if (!phba->sli4_hba.nvmet_cqset) {
9751 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9752 					"3165 Fast-path NVME CQ Set "
9753 					"array not allocated\n");
9754 			rc = -ENOMEM;
9755 			goto out_destroy;
9756 		}
9757 		if (phba->cfg_nvmet_mrq > 1) {
9758 			rc = lpfc_cq_create_set(phba,
9759 					phba->sli4_hba.nvmet_cqset,
9760 					qp,
9761 					LPFC_WCQ, LPFC_NVMET);
9762 			if (rc) {
9763 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9764 						"3164 Failed setup of NVME CQ "
9765 						"Set, rc = 0x%x\n",
9766 						(uint32_t)rc);
9767 				goto out_destroy;
9768 			}
9769 		} else {
9770 			/* Set up NVMET Receive Complete Queue */
9771 			rc = lpfc_cq_create(phba, phba->sli4_hba.nvmet_cqset[0],
9772 					    qp[0].hba_eq,
9773 					    LPFC_WCQ, LPFC_NVMET);
9774 			if (rc) {
9775 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9776 						"6089 Failed setup NVMET CQ: "
9777 						"rc = 0x%x\n", (uint32_t)rc);
9778 				goto out_destroy;
9779 			}
9780 			phba->sli4_hba.nvmet_cqset[0]->chann = 0;
9781 
9782 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9783 					"6090 NVMET CQ setup: cq-id=%d, "
9784 					"parent eq-id=%d\n",
9785 					phba->sli4_hba.nvmet_cqset[0]->queue_id,
9786 					qp[0].hba_eq->queue_id);
9787 		}
9788 	}
9789 
9790 	/* Set up slow-path ELS WQ/CQ */
9791 	if (!phba->sli4_hba.els_cq || !phba->sli4_hba.els_wq) {
9792 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9793 				"0530 ELS %s not allocated\n",
9794 				phba->sli4_hba.els_cq ? "WQ" : "CQ");
9795 		rc = -ENOMEM;
9796 		goto out_destroy;
9797 	}
9798 	rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9799 			       phba->sli4_hba.els_cq,
9800 			       phba->sli4_hba.els_wq,
9801 			       NULL, 0, LPFC_ELS);
9802 	if (rc) {
9803 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9804 				"0525 Failed setup of ELS WQ/CQ: rc = 0x%x\n",
9805 				(uint32_t)rc);
9806 		goto out_destroy;
9807 	}
9808 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9809 			"2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
9810 			phba->sli4_hba.els_wq->queue_id,
9811 			phba->sli4_hba.els_cq->queue_id);
9812 
9813 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
9814 		/* Set up NVME LS Complete Queue */
9815 		if (!phba->sli4_hba.nvmels_cq || !phba->sli4_hba.nvmels_wq) {
9816 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9817 					"6091 LS %s not allocated\n",
9818 					phba->sli4_hba.nvmels_cq ? "WQ" : "CQ");
9819 			rc = -ENOMEM;
9820 			goto out_destroy;
9821 		}
9822 		rc = lpfc_create_wq_cq(phba, qp[0].hba_eq,
9823 				       phba->sli4_hba.nvmels_cq,
9824 				       phba->sli4_hba.nvmels_wq,
9825 				       NULL, 0, LPFC_NVME_LS);
9826 		if (rc) {
9827 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9828 					"0526 Failed setup of NVVME LS WQ/CQ: "
9829 					"rc = 0x%x\n", (uint32_t)rc);
9830 			goto out_destroy;
9831 		}
9832 
9833 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9834 				"6096 ELS WQ setup: wq-id=%d, "
9835 				"parent cq-id=%d\n",
9836 				phba->sli4_hba.nvmels_wq->queue_id,
9837 				phba->sli4_hba.nvmels_cq->queue_id);
9838 	}
9839 
9840 	/*
9841 	 * Create NVMET Receive Queue (RQ)
9842 	 */
9843 	if (phba->nvmet_support) {
9844 		if ((!phba->sli4_hba.nvmet_cqset) ||
9845 		    (!phba->sli4_hba.nvmet_mrq_hdr) ||
9846 		    (!phba->sli4_hba.nvmet_mrq_data)) {
9847 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9848 					"6130 MRQ CQ Queues not "
9849 					"allocated\n");
9850 			rc = -ENOMEM;
9851 			goto out_destroy;
9852 		}
9853 		if (phba->cfg_nvmet_mrq > 1) {
9854 			rc = lpfc_mrq_create(phba,
9855 					     phba->sli4_hba.nvmet_mrq_hdr,
9856 					     phba->sli4_hba.nvmet_mrq_data,
9857 					     phba->sli4_hba.nvmet_cqset,
9858 					     LPFC_NVMET);
9859 			if (rc) {
9860 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9861 						"6098 Failed setup of NVMET "
9862 						"MRQ: rc = 0x%x\n",
9863 						(uint32_t)rc);
9864 				goto out_destroy;
9865 			}
9866 
9867 		} else {
9868 			rc = lpfc_rq_create(phba,
9869 					    phba->sli4_hba.nvmet_mrq_hdr[0],
9870 					    phba->sli4_hba.nvmet_mrq_data[0],
9871 					    phba->sli4_hba.nvmet_cqset[0],
9872 					    LPFC_NVMET);
9873 			if (rc) {
9874 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9875 						"6057 Failed setup of NVMET "
9876 						"Receive Queue: rc = 0x%x\n",
9877 						(uint32_t)rc);
9878 				goto out_destroy;
9879 			}
9880 
9881 			lpfc_printf_log(
9882 				phba, KERN_INFO, LOG_INIT,
9883 				"6099 NVMET RQ setup: hdr-rq-id=%d, "
9884 				"dat-rq-id=%d parent cq-id=%d\n",
9885 				phba->sli4_hba.nvmet_mrq_hdr[0]->queue_id,
9886 				phba->sli4_hba.nvmet_mrq_data[0]->queue_id,
9887 				phba->sli4_hba.nvmet_cqset[0]->queue_id);
9888 
9889 		}
9890 	}
9891 
9892 	if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
9893 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9894 				"0540 Receive Queue not allocated\n");
9895 		rc = -ENOMEM;
9896 		goto out_destroy;
9897 	}
9898 
9899 	rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
9900 			    phba->sli4_hba.els_cq, LPFC_USOL);
9901 	if (rc) {
9902 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9903 				"0541 Failed setup of Receive Queue: "
9904 				"rc = 0x%x\n", (uint32_t)rc);
9905 		goto out_destroy;
9906 	}
9907 
9908 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9909 			"2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
9910 			"parent cq-id=%d\n",
9911 			phba->sli4_hba.hdr_rq->queue_id,
9912 			phba->sli4_hba.dat_rq->queue_id,
9913 			phba->sli4_hba.els_cq->queue_id);
9914 
9915 	if (phba->cfg_fcp_imax)
9916 		usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
9917 	else
9918 		usdelay = 0;
9919 
9920 	for (qidx = 0; qidx < phba->cfg_irq_chann;
9921 	     qidx += LPFC_MAX_EQ_DELAY_EQID_CNT)
9922 		lpfc_modify_hba_eq_delay(phba, qidx, LPFC_MAX_EQ_DELAY_EQID_CNT,
9923 					 usdelay);
9924 
9925 	if (phba->sli4_hba.cq_max) {
9926 		kfree(phba->sli4_hba.cq_lookup);
9927 		phba->sli4_hba.cq_lookup = kcalloc((phba->sli4_hba.cq_max + 1),
9928 			sizeof(struct lpfc_queue *), GFP_KERNEL);
9929 		if (!phba->sli4_hba.cq_lookup) {
9930 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
9931 					"0549 Failed setup of CQ Lookup table: "
9932 					"size 0x%x\n", phba->sli4_hba.cq_max);
9933 			rc = -ENOMEM;
9934 			goto out_destroy;
9935 		}
9936 		lpfc_setup_cq_lookup(phba);
9937 	}
9938 	return 0;
9939 
9940 out_destroy:
9941 	lpfc_sli4_queue_unset(phba);
9942 out_error:
9943 	return rc;
9944 }
9945 
9946 /**
9947  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
9948  * @phba: pointer to lpfc hba data structure.
9949  *
9950  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
9951  * operation.
9952  *
9953  * Return codes
9954  *      0 - successful
9955  *      -ENOMEM - No available memory
9956  *      -EIO - The mailbox failed to complete successfully.
9957  **/
9958 void
9959 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
9960 {
9961 	struct lpfc_sli4_hdw_queue *qp;
9962 	struct lpfc_queue *eq;
9963 	int qidx;
9964 
9965 	/* Unset mailbox command work queue */
9966 	if (phba->sli4_hba.mbx_wq)
9967 		lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
9968 
9969 	/* Unset NVME LS work queue */
9970 	if (phba->sli4_hba.nvmels_wq)
9971 		lpfc_wq_destroy(phba, phba->sli4_hba.nvmels_wq);
9972 
9973 	/* Unset ELS work queue */
9974 	if (phba->sli4_hba.els_wq)
9975 		lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
9976 
9977 	/* Unset unsolicited receive queue */
9978 	if (phba->sli4_hba.hdr_rq)
9979 		lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq,
9980 				phba->sli4_hba.dat_rq);
9981 
9982 	/* Unset mailbox command complete queue */
9983 	if (phba->sli4_hba.mbx_cq)
9984 		lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
9985 
9986 	/* Unset ELS complete queue */
9987 	if (phba->sli4_hba.els_cq)
9988 		lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
9989 
9990 	/* Unset NVME LS complete queue */
9991 	if (phba->sli4_hba.nvmels_cq)
9992 		lpfc_cq_destroy(phba, phba->sli4_hba.nvmels_cq);
9993 
9994 	if (phba->nvmet_support) {
9995 		/* Unset NVMET MRQ queue */
9996 		if (phba->sli4_hba.nvmet_mrq_hdr) {
9997 			for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
9998 				lpfc_rq_destroy(
9999 					phba,
10000 					phba->sli4_hba.nvmet_mrq_hdr[qidx],
10001 					phba->sli4_hba.nvmet_mrq_data[qidx]);
10002 		}
10003 
10004 		/* Unset NVMET CQ Set complete queue */
10005 		if (phba->sli4_hba.nvmet_cqset) {
10006 			for (qidx = 0; qidx < phba->cfg_nvmet_mrq; qidx++)
10007 				lpfc_cq_destroy(
10008 					phba, phba->sli4_hba.nvmet_cqset[qidx]);
10009 		}
10010 	}
10011 
10012 	/* Unset fast-path SLI4 queues */
10013 	if (phba->sli4_hba.hdwq) {
10014 		/* Loop thru all Hardware Queues */
10015 		for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) {
10016 			/* Destroy the CQ/WQ corresponding to Hardware Queue */
10017 			qp = &phba->sli4_hba.hdwq[qidx];
10018 			lpfc_wq_destroy(phba, qp->io_wq);
10019 			lpfc_cq_destroy(phba, qp->io_cq);
10020 		}
10021 		/* Loop thru all IRQ vectors */
10022 		for (qidx = 0; qidx < phba->cfg_irq_chann; qidx++) {
10023 			/* Destroy the EQ corresponding to the IRQ vector */
10024 			eq = phba->sli4_hba.hba_eq_hdl[qidx].eq;
10025 			lpfc_eq_destroy(phba, eq);
10026 		}
10027 	}
10028 
10029 	kfree(phba->sli4_hba.cq_lookup);
10030 	phba->sli4_hba.cq_lookup = NULL;
10031 	phba->sli4_hba.cq_max = 0;
10032 }
10033 
10034 /**
10035  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
10036  * @phba: pointer to lpfc hba data structure.
10037  *
10038  * This routine is invoked to allocate and set up a pool of completion queue
10039  * events. The body of the completion queue event is a completion queue entry
10040  * CQE. For now, this pool is used for the interrupt service routine to queue
10041  * the following HBA completion queue events for the worker thread to process:
10042  *   - Mailbox asynchronous events
10043  *   - Receive queue completion unsolicited events
10044  * Later, this can be used for all the slow-path events.
10045  *
10046  * Return codes
10047  *      0 - successful
10048  *      -ENOMEM - No available memory
10049  **/
10050 static int
10051 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
10052 {
10053 	struct lpfc_cq_event *cq_event;
10054 	int i;
10055 
10056 	for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
10057 		cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
10058 		if (!cq_event)
10059 			goto out_pool_create_fail;
10060 		list_add_tail(&cq_event->list,
10061 			      &phba->sli4_hba.sp_cqe_event_pool);
10062 	}
10063 	return 0;
10064 
10065 out_pool_create_fail:
10066 	lpfc_sli4_cq_event_pool_destroy(phba);
10067 	return -ENOMEM;
10068 }
10069 
10070 /**
10071  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
10072  * @phba: pointer to lpfc hba data structure.
10073  *
10074  * This routine is invoked to free the pool of completion queue events at
10075  * driver unload time. Note that, it is the responsibility of the driver
10076  * cleanup routine to free all the outstanding completion-queue events
10077  * allocated from this pool back into the pool before invoking this routine
10078  * to destroy the pool.
10079  **/
10080 static void
10081 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
10082 {
10083 	struct lpfc_cq_event *cq_event, *next_cq_event;
10084 
10085 	list_for_each_entry_safe(cq_event, next_cq_event,
10086 				 &phba->sli4_hba.sp_cqe_event_pool, list) {
10087 		list_del(&cq_event->list);
10088 		kfree(cq_event);
10089 	}
10090 }
10091 
10092 /**
10093  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
10094  * @phba: pointer to lpfc hba data structure.
10095  *
10096  * This routine is the lock free version of the API invoked to allocate a
10097  * completion-queue event from the free pool.
10098  *
10099  * Return: Pointer to the newly allocated completion-queue event if successful
10100  *         NULL otherwise.
10101  **/
10102 struct lpfc_cq_event *
10103 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
10104 {
10105 	struct lpfc_cq_event *cq_event = NULL;
10106 
10107 	list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
10108 			 struct lpfc_cq_event, list);
10109 	return cq_event;
10110 }
10111 
10112 /**
10113  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
10114  * @phba: pointer to lpfc hba data structure.
10115  *
10116  * This routine is the lock version of the API invoked to allocate a
10117  * completion-queue event from the free pool.
10118  *
10119  * Return: Pointer to the newly allocated completion-queue event if successful
10120  *         NULL otherwise.
10121  **/
10122 struct lpfc_cq_event *
10123 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
10124 {
10125 	struct lpfc_cq_event *cq_event;
10126 	unsigned long iflags;
10127 
10128 	spin_lock_irqsave(&phba->hbalock, iflags);
10129 	cq_event = __lpfc_sli4_cq_event_alloc(phba);
10130 	spin_unlock_irqrestore(&phba->hbalock, iflags);
10131 	return cq_event;
10132 }
10133 
10134 /**
10135  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
10136  * @phba: pointer to lpfc hba data structure.
10137  * @cq_event: pointer to the completion queue event to be freed.
10138  *
10139  * This routine is the lock free version of the API invoked to release a
10140  * completion-queue event back into the free pool.
10141  **/
10142 void
10143 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
10144 			     struct lpfc_cq_event *cq_event)
10145 {
10146 	list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
10147 }
10148 
10149 /**
10150  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
10151  * @phba: pointer to lpfc hba data structure.
10152  * @cq_event: pointer to the completion queue event to be freed.
10153  *
10154  * This routine is the lock version of the API invoked to release a
10155  * completion-queue event back into the free pool.
10156  **/
10157 void
10158 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
10159 			   struct lpfc_cq_event *cq_event)
10160 {
10161 	unsigned long iflags;
10162 	spin_lock_irqsave(&phba->hbalock, iflags);
10163 	__lpfc_sli4_cq_event_release(phba, cq_event);
10164 	spin_unlock_irqrestore(&phba->hbalock, iflags);
10165 }
10166 
10167 /**
10168  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
10169  * @phba: pointer to lpfc hba data structure.
10170  *
10171  * This routine is to free all the pending completion-queue events to the
10172  * back into the free pool for device reset.
10173  **/
10174 static void
10175 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
10176 {
10177 	LIST_HEAD(cqelist);
10178 	struct lpfc_cq_event *cqe;
10179 	unsigned long iflags;
10180 
10181 	/* Retrieve all the pending WCQEs from pending WCQE lists */
10182 	spin_lock_irqsave(&phba->hbalock, iflags);
10183 	/* Pending FCP XRI abort events */
10184 	list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
10185 			 &cqelist);
10186 	/* Pending ELS XRI abort events */
10187 	list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
10188 			 &cqelist);
10189 	/* Pending asynnc events */
10190 	list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
10191 			 &cqelist);
10192 	spin_unlock_irqrestore(&phba->hbalock, iflags);
10193 
10194 	while (!list_empty(&cqelist)) {
10195 		list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list);
10196 		lpfc_sli4_cq_event_release(phba, cqe);
10197 	}
10198 }
10199 
10200 /**
10201  * lpfc_pci_function_reset - Reset pci function.
10202  * @phba: pointer to lpfc hba data structure.
10203  *
10204  * This routine is invoked to request a PCI function reset. It will destroys
10205  * all resources assigned to the PCI function which originates this request.
10206  *
10207  * Return codes
10208  *      0 - successful
10209  *      -ENOMEM - No available memory
10210  *      -EIO - The mailbox failed to complete successfully.
10211  **/
10212 int
10213 lpfc_pci_function_reset(struct lpfc_hba *phba)
10214 {
10215 	LPFC_MBOXQ_t *mboxq;
10216 	uint32_t rc = 0, if_type;
10217 	uint32_t shdr_status, shdr_add_status;
10218 	uint32_t rdy_chk;
10219 	uint32_t port_reset = 0;
10220 	union lpfc_sli4_cfg_shdr *shdr;
10221 	struct lpfc_register reg_data;
10222 	uint16_t devid;
10223 
10224 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10225 	switch (if_type) {
10226 	case LPFC_SLI_INTF_IF_TYPE_0:
10227 		mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
10228 						       GFP_KERNEL);
10229 		if (!mboxq) {
10230 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10231 					"0494 Unable to allocate memory for "
10232 					"issuing SLI_FUNCTION_RESET mailbox "
10233 					"command\n");
10234 			return -ENOMEM;
10235 		}
10236 
10237 		/* Setup PCI function reset mailbox-ioctl command */
10238 		lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
10239 				 LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
10240 				 LPFC_SLI4_MBX_EMBED);
10241 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
10242 		shdr = (union lpfc_sli4_cfg_shdr *)
10243 			&mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
10244 		shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10245 		shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
10246 					 &shdr->response);
10247 		if (rc != MBX_TIMEOUT)
10248 			mempool_free(mboxq, phba->mbox_mem_pool);
10249 		if (shdr_status || shdr_add_status || rc) {
10250 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10251 					"0495 SLI_FUNCTION_RESET mailbox "
10252 					"failed with status x%x add_status x%x,"
10253 					" mbx status x%x\n",
10254 					shdr_status, shdr_add_status, rc);
10255 			rc = -ENXIO;
10256 		}
10257 		break;
10258 	case LPFC_SLI_INTF_IF_TYPE_2:
10259 	case LPFC_SLI_INTF_IF_TYPE_6:
10260 wait:
10261 		/*
10262 		 * Poll the Port Status Register and wait for RDY for
10263 		 * up to 30 seconds. If the port doesn't respond, treat
10264 		 * it as an error.
10265 		 */
10266 		for (rdy_chk = 0; rdy_chk < 1500; rdy_chk++) {
10267 			if (lpfc_readl(phba->sli4_hba.u.if_type2.
10268 				STATUSregaddr, &reg_data.word0)) {
10269 				rc = -ENODEV;
10270 				goto out;
10271 			}
10272 			if (bf_get(lpfc_sliport_status_rdy, &reg_data))
10273 				break;
10274 			msleep(20);
10275 		}
10276 
10277 		if (!bf_get(lpfc_sliport_status_rdy, &reg_data)) {
10278 			phba->work_status[0] = readl(
10279 				phba->sli4_hba.u.if_type2.ERR1regaddr);
10280 			phba->work_status[1] = readl(
10281 				phba->sli4_hba.u.if_type2.ERR2regaddr);
10282 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10283 					"2890 Port not ready, port status reg "
10284 					"0x%x error 1=0x%x, error 2=0x%x\n",
10285 					reg_data.word0,
10286 					phba->work_status[0],
10287 					phba->work_status[1]);
10288 			rc = -ENODEV;
10289 			goto out;
10290 		}
10291 
10292 		if (!port_reset) {
10293 			/*
10294 			 * Reset the port now
10295 			 */
10296 			reg_data.word0 = 0;
10297 			bf_set(lpfc_sliport_ctrl_end, &reg_data,
10298 			       LPFC_SLIPORT_LITTLE_ENDIAN);
10299 			bf_set(lpfc_sliport_ctrl_ip, &reg_data,
10300 			       LPFC_SLIPORT_INIT_PORT);
10301 			writel(reg_data.word0, phba->sli4_hba.u.if_type2.
10302 			       CTRLregaddr);
10303 			/* flush */
10304 			pci_read_config_word(phba->pcidev,
10305 					     PCI_DEVICE_ID, &devid);
10306 
10307 			port_reset = 1;
10308 			msleep(20);
10309 			goto wait;
10310 		} else if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
10311 			rc = -ENODEV;
10312 			goto out;
10313 		}
10314 		break;
10315 
10316 	case LPFC_SLI_INTF_IF_TYPE_1:
10317 	default:
10318 		break;
10319 	}
10320 
10321 out:
10322 	/* Catch the not-ready port failure after a port reset. */
10323 	if (rc) {
10324 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10325 				"3317 HBA not functional: IP Reset Failed "
10326 				"try: echo fw_reset > board_mode\n");
10327 		rc = -ENODEV;
10328 	}
10329 
10330 	return rc;
10331 }
10332 
10333 /**
10334  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
10335  * @phba: pointer to lpfc hba data structure.
10336  *
10337  * This routine is invoked to set up the PCI device memory space for device
10338  * with SLI-4 interface spec.
10339  *
10340  * Return codes
10341  * 	0 - successful
10342  * 	other values - error
10343  **/
10344 static int
10345 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
10346 {
10347 	struct pci_dev *pdev = phba->pcidev;
10348 	unsigned long bar0map_len, bar1map_len, bar2map_len;
10349 	int error;
10350 	uint32_t if_type;
10351 
10352 	if (!pdev)
10353 		return -ENODEV;
10354 
10355 	/* Set the device DMA mask size */
10356 	error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10357 	if (error)
10358 		error = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10359 	if (error)
10360 		return error;
10361 
10362 	/*
10363 	 * The BARs and register set definitions and offset locations are
10364 	 * dependent on the if_type.
10365 	 */
10366 	if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
10367 				  &phba->sli4_hba.sli_intf.word0)) {
10368 		return -ENODEV;
10369 	}
10370 
10371 	/* There is no SLI3 failback for SLI4 devices. */
10372 	if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
10373 	    LPFC_SLI_INTF_VALID) {
10374 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10375 				"2894 SLI_INTF reg contents invalid "
10376 				"sli_intf reg 0x%x\n",
10377 				phba->sli4_hba.sli_intf.word0);
10378 		return -ENODEV;
10379 	}
10380 
10381 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10382 	/*
10383 	 * Get the bus address of SLI4 device Bar regions and the
10384 	 * number of bytes required by each mapping. The mapping of the
10385 	 * particular PCI BARs regions is dependent on the type of
10386 	 * SLI4 device.
10387 	 */
10388 	if (pci_resource_start(pdev, PCI_64BIT_BAR0)) {
10389 		phba->pci_bar0_map = pci_resource_start(pdev, PCI_64BIT_BAR0);
10390 		bar0map_len = pci_resource_len(pdev, PCI_64BIT_BAR0);
10391 
10392 		/*
10393 		 * Map SLI4 PCI Config Space Register base to a kernel virtual
10394 		 * addr
10395 		 */
10396 		phba->sli4_hba.conf_regs_memmap_p =
10397 			ioremap(phba->pci_bar0_map, bar0map_len);
10398 		if (!phba->sli4_hba.conf_regs_memmap_p) {
10399 			dev_printk(KERN_ERR, &pdev->dev,
10400 				   "ioremap failed for SLI4 PCI config "
10401 				   "registers.\n");
10402 			return -ENODEV;
10403 		}
10404 		phba->pci_bar0_memmap_p = phba->sli4_hba.conf_regs_memmap_p;
10405 		/* Set up BAR0 PCI config space register memory map */
10406 		lpfc_sli4_bar0_register_memmap(phba, if_type);
10407 	} else {
10408 		phba->pci_bar0_map = pci_resource_start(pdev, 1);
10409 		bar0map_len = pci_resource_len(pdev, 1);
10410 		if (if_type >= LPFC_SLI_INTF_IF_TYPE_2) {
10411 			dev_printk(KERN_ERR, &pdev->dev,
10412 			   "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
10413 			return -ENODEV;
10414 		}
10415 		phba->sli4_hba.conf_regs_memmap_p =
10416 				ioremap(phba->pci_bar0_map, bar0map_len);
10417 		if (!phba->sli4_hba.conf_regs_memmap_p) {
10418 			dev_printk(KERN_ERR, &pdev->dev,
10419 				"ioremap failed for SLI4 PCI config "
10420 				"registers.\n");
10421 			return -ENODEV;
10422 		}
10423 		lpfc_sli4_bar0_register_memmap(phba, if_type);
10424 	}
10425 
10426 	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
10427 		if (pci_resource_start(pdev, PCI_64BIT_BAR2)) {
10428 			/*
10429 			 * Map SLI4 if type 0 HBA Control Register base to a
10430 			 * kernel virtual address and setup the registers.
10431 			 */
10432 			phba->pci_bar1_map = pci_resource_start(pdev,
10433 								PCI_64BIT_BAR2);
10434 			bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
10435 			phba->sli4_hba.ctrl_regs_memmap_p =
10436 					ioremap(phba->pci_bar1_map,
10437 						bar1map_len);
10438 			if (!phba->sli4_hba.ctrl_regs_memmap_p) {
10439 				dev_err(&pdev->dev,
10440 					   "ioremap failed for SLI4 HBA "
10441 					    "control registers.\n");
10442 				error = -ENOMEM;
10443 				goto out_iounmap_conf;
10444 			}
10445 			phba->pci_bar2_memmap_p =
10446 					 phba->sli4_hba.ctrl_regs_memmap_p;
10447 			lpfc_sli4_bar1_register_memmap(phba, if_type);
10448 		} else {
10449 			error = -ENOMEM;
10450 			goto out_iounmap_conf;
10451 		}
10452 	}
10453 
10454 	if ((if_type == LPFC_SLI_INTF_IF_TYPE_6) &&
10455 	    (pci_resource_start(pdev, PCI_64BIT_BAR2))) {
10456 		/*
10457 		 * Map SLI4 if type 6 HBA Doorbell Register base to a kernel
10458 		 * virtual address and setup the registers.
10459 		 */
10460 		phba->pci_bar1_map = pci_resource_start(pdev, PCI_64BIT_BAR2);
10461 		bar1map_len = pci_resource_len(pdev, PCI_64BIT_BAR2);
10462 		phba->sli4_hba.drbl_regs_memmap_p =
10463 				ioremap(phba->pci_bar1_map, bar1map_len);
10464 		if (!phba->sli4_hba.drbl_regs_memmap_p) {
10465 			dev_err(&pdev->dev,
10466 			   "ioremap failed for SLI4 HBA doorbell registers.\n");
10467 			error = -ENOMEM;
10468 			goto out_iounmap_conf;
10469 		}
10470 		phba->pci_bar2_memmap_p = phba->sli4_hba.drbl_regs_memmap_p;
10471 		lpfc_sli4_bar1_register_memmap(phba, if_type);
10472 	}
10473 
10474 	if (if_type == LPFC_SLI_INTF_IF_TYPE_0) {
10475 		if (pci_resource_start(pdev, PCI_64BIT_BAR4)) {
10476 			/*
10477 			 * Map SLI4 if type 0 HBA Doorbell Register base to
10478 			 * a kernel virtual address and setup the registers.
10479 			 */
10480 			phba->pci_bar2_map = pci_resource_start(pdev,
10481 								PCI_64BIT_BAR4);
10482 			bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
10483 			phba->sli4_hba.drbl_regs_memmap_p =
10484 					ioremap(phba->pci_bar2_map,
10485 						bar2map_len);
10486 			if (!phba->sli4_hba.drbl_regs_memmap_p) {
10487 				dev_err(&pdev->dev,
10488 					   "ioremap failed for SLI4 HBA"
10489 					   " doorbell registers.\n");
10490 				error = -ENOMEM;
10491 				goto out_iounmap_ctrl;
10492 			}
10493 			phba->pci_bar4_memmap_p =
10494 					phba->sli4_hba.drbl_regs_memmap_p;
10495 			error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
10496 			if (error)
10497 				goto out_iounmap_all;
10498 		} else {
10499 			error = -ENOMEM;
10500 			goto out_iounmap_all;
10501 		}
10502 	}
10503 
10504 	if (if_type == LPFC_SLI_INTF_IF_TYPE_6 &&
10505 	    pci_resource_start(pdev, PCI_64BIT_BAR4)) {
10506 		/*
10507 		 * Map SLI4 if type 6 HBA DPP Register base to a kernel
10508 		 * virtual address and setup the registers.
10509 		 */
10510 		phba->pci_bar2_map = pci_resource_start(pdev, PCI_64BIT_BAR4);
10511 		bar2map_len = pci_resource_len(pdev, PCI_64BIT_BAR4);
10512 		phba->sli4_hba.dpp_regs_memmap_p =
10513 				ioremap(phba->pci_bar2_map, bar2map_len);
10514 		if (!phba->sli4_hba.dpp_regs_memmap_p) {
10515 			dev_err(&pdev->dev,
10516 			   "ioremap failed for SLI4 HBA dpp registers.\n");
10517 			error = -ENOMEM;
10518 			goto out_iounmap_ctrl;
10519 		}
10520 		phba->pci_bar4_memmap_p = phba->sli4_hba.dpp_regs_memmap_p;
10521 	}
10522 
10523 	/* Set up the EQ/CQ register handeling functions now */
10524 	switch (if_type) {
10525 	case LPFC_SLI_INTF_IF_TYPE_0:
10526 	case LPFC_SLI_INTF_IF_TYPE_2:
10527 		phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_eq_clr_intr;
10528 		phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_write_eq_db;
10529 		phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_write_cq_db;
10530 		break;
10531 	case LPFC_SLI_INTF_IF_TYPE_6:
10532 		phba->sli4_hba.sli4_eq_clr_intr = lpfc_sli4_if6_eq_clr_intr;
10533 		phba->sli4_hba.sli4_write_eq_db = lpfc_sli4_if6_write_eq_db;
10534 		phba->sli4_hba.sli4_write_cq_db = lpfc_sli4_if6_write_cq_db;
10535 		break;
10536 	default:
10537 		break;
10538 	}
10539 
10540 	return 0;
10541 
10542 out_iounmap_all:
10543 	iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10544 out_iounmap_ctrl:
10545 	iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
10546 out_iounmap_conf:
10547 	iounmap(phba->sli4_hba.conf_regs_memmap_p);
10548 
10549 	return error;
10550 }
10551 
10552 /**
10553  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
10554  * @phba: pointer to lpfc hba data structure.
10555  *
10556  * This routine is invoked to unset the PCI device memory space for device
10557  * with SLI-4 interface spec.
10558  **/
10559 static void
10560 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
10561 {
10562 	uint32_t if_type;
10563 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
10564 
10565 	switch (if_type) {
10566 	case LPFC_SLI_INTF_IF_TYPE_0:
10567 		iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10568 		iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
10569 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
10570 		break;
10571 	case LPFC_SLI_INTF_IF_TYPE_2:
10572 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
10573 		break;
10574 	case LPFC_SLI_INTF_IF_TYPE_6:
10575 		iounmap(phba->sli4_hba.drbl_regs_memmap_p);
10576 		iounmap(phba->sli4_hba.conf_regs_memmap_p);
10577 		if (phba->sli4_hba.dpp_regs_memmap_p)
10578 			iounmap(phba->sli4_hba.dpp_regs_memmap_p);
10579 		break;
10580 	case LPFC_SLI_INTF_IF_TYPE_1:
10581 	default:
10582 		dev_printk(KERN_ERR, &phba->pcidev->dev,
10583 			   "FATAL - unsupported SLI4 interface type - %d\n",
10584 			   if_type);
10585 		break;
10586 	}
10587 }
10588 
10589 /**
10590  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
10591  * @phba: pointer to lpfc hba data structure.
10592  *
10593  * This routine is invoked to enable the MSI-X interrupt vectors to device
10594  * with SLI-3 interface specs.
10595  *
10596  * Return codes
10597  *   0 - successful
10598  *   other values - error
10599  **/
10600 static int
10601 lpfc_sli_enable_msix(struct lpfc_hba *phba)
10602 {
10603 	int rc;
10604 	LPFC_MBOXQ_t *pmb;
10605 
10606 	/* Set up MSI-X multi-message vectors */
10607 	rc = pci_alloc_irq_vectors(phba->pcidev,
10608 			LPFC_MSIX_VECTORS, LPFC_MSIX_VECTORS, PCI_IRQ_MSIX);
10609 	if (rc < 0) {
10610 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10611 				"0420 PCI enable MSI-X failed (%d)\n", rc);
10612 		goto vec_fail_out;
10613 	}
10614 
10615 	/*
10616 	 * Assign MSI-X vectors to interrupt handlers
10617 	 */
10618 
10619 	/* vector-0 is associated to slow-path handler */
10620 	rc = request_irq(pci_irq_vector(phba->pcidev, 0),
10621 			 &lpfc_sli_sp_intr_handler, 0,
10622 			 LPFC_SP_DRIVER_HANDLER_NAME, phba);
10623 	if (rc) {
10624 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10625 				"0421 MSI-X slow-path request_irq failed "
10626 				"(%d)\n", rc);
10627 		goto msi_fail_out;
10628 	}
10629 
10630 	/* vector-1 is associated to fast-path handler */
10631 	rc = request_irq(pci_irq_vector(phba->pcidev, 1),
10632 			 &lpfc_sli_fp_intr_handler, 0,
10633 			 LPFC_FP_DRIVER_HANDLER_NAME, phba);
10634 
10635 	if (rc) {
10636 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10637 				"0429 MSI-X fast-path request_irq failed "
10638 				"(%d)\n", rc);
10639 		goto irq_fail_out;
10640 	}
10641 
10642 	/*
10643 	 * Configure HBA MSI-X attention conditions to messages
10644 	 */
10645 	pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10646 
10647 	if (!pmb) {
10648 		rc = -ENOMEM;
10649 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
10650 				"0474 Unable to allocate memory for issuing "
10651 				"MBOX_CONFIG_MSI command\n");
10652 		goto mem_fail_out;
10653 	}
10654 	rc = lpfc_config_msi(phba, pmb);
10655 	if (rc)
10656 		goto mbx_fail_out;
10657 	rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
10658 	if (rc != MBX_SUCCESS) {
10659 		lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
10660 				"0351 Config MSI mailbox command failed, "
10661 				"mbxCmd x%x, mbxStatus x%x\n",
10662 				pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
10663 		goto mbx_fail_out;
10664 	}
10665 
10666 	/* Free memory allocated for mailbox command */
10667 	mempool_free(pmb, phba->mbox_mem_pool);
10668 	return rc;
10669 
10670 mbx_fail_out:
10671 	/* Free memory allocated for mailbox command */
10672 	mempool_free(pmb, phba->mbox_mem_pool);
10673 
10674 mem_fail_out:
10675 	/* free the irq already requested */
10676 	free_irq(pci_irq_vector(phba->pcidev, 1), phba);
10677 
10678 irq_fail_out:
10679 	/* free the irq already requested */
10680 	free_irq(pci_irq_vector(phba->pcidev, 0), phba);
10681 
10682 msi_fail_out:
10683 	/* Unconfigure MSI-X capability structure */
10684 	pci_free_irq_vectors(phba->pcidev);
10685 
10686 vec_fail_out:
10687 	return rc;
10688 }
10689 
10690 /**
10691  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
10692  * @phba: pointer to lpfc hba data structure.
10693  *
10694  * This routine is invoked to enable the MSI interrupt mode to device with
10695  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
10696  * enable the MSI vector. The device driver is responsible for calling the
10697  * request_irq() to register MSI vector with a interrupt the handler, which
10698  * is done in this function.
10699  *
10700  * Return codes
10701  * 	0 - successful
10702  * 	other values - error
10703  */
10704 static int
10705 lpfc_sli_enable_msi(struct lpfc_hba *phba)
10706 {
10707 	int rc;
10708 
10709 	rc = pci_enable_msi(phba->pcidev);
10710 	if (!rc)
10711 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10712 				"0462 PCI enable MSI mode success.\n");
10713 	else {
10714 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10715 				"0471 PCI enable MSI mode failed (%d)\n", rc);
10716 		return rc;
10717 	}
10718 
10719 	rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
10720 			 0, LPFC_DRIVER_NAME, phba);
10721 	if (rc) {
10722 		pci_disable_msi(phba->pcidev);
10723 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10724 				"0478 MSI request_irq failed (%d)\n", rc);
10725 	}
10726 	return rc;
10727 }
10728 
10729 /**
10730  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
10731  * @phba: pointer to lpfc hba data structure.
10732  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
10733  *
10734  * This routine is invoked to enable device interrupt and associate driver's
10735  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
10736  * spec. Depends on the interrupt mode configured to the driver, the driver
10737  * will try to fallback from the configured interrupt mode to an interrupt
10738  * mode which is supported by the platform, kernel, and device in the order
10739  * of:
10740  * MSI-X -> MSI -> IRQ.
10741  *
10742  * Return codes
10743  *   0 - successful
10744  *   other values - error
10745  **/
10746 static uint32_t
10747 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
10748 {
10749 	uint32_t intr_mode = LPFC_INTR_ERROR;
10750 	int retval;
10751 
10752 	if (cfg_mode == 2) {
10753 		/* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
10754 		retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
10755 		if (!retval) {
10756 			/* Now, try to enable MSI-X interrupt mode */
10757 			retval = lpfc_sli_enable_msix(phba);
10758 			if (!retval) {
10759 				/* Indicate initialization to MSI-X mode */
10760 				phba->intr_type = MSIX;
10761 				intr_mode = 2;
10762 			}
10763 		}
10764 	}
10765 
10766 	/* Fallback to MSI if MSI-X initialization failed */
10767 	if (cfg_mode >= 1 && phba->intr_type == NONE) {
10768 		retval = lpfc_sli_enable_msi(phba);
10769 		if (!retval) {
10770 			/* Indicate initialization to MSI mode */
10771 			phba->intr_type = MSI;
10772 			intr_mode = 1;
10773 		}
10774 	}
10775 
10776 	/* Fallback to INTx if both MSI-X/MSI initalization failed */
10777 	if (phba->intr_type == NONE) {
10778 		retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
10779 				     IRQF_SHARED, LPFC_DRIVER_NAME, phba);
10780 		if (!retval) {
10781 			/* Indicate initialization to INTx mode */
10782 			phba->intr_type = INTx;
10783 			intr_mode = 0;
10784 		}
10785 	}
10786 	return intr_mode;
10787 }
10788 
10789 /**
10790  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
10791  * @phba: pointer to lpfc hba data structure.
10792  *
10793  * This routine is invoked to disable device interrupt and disassociate the
10794  * driver's interrupt handler(s) from interrupt vector(s) to device with
10795  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
10796  * release the interrupt vector(s) for the message signaled interrupt.
10797  **/
10798 static void
10799 lpfc_sli_disable_intr(struct lpfc_hba *phba)
10800 {
10801 	int nr_irqs, i;
10802 
10803 	if (phba->intr_type == MSIX)
10804 		nr_irqs = LPFC_MSIX_VECTORS;
10805 	else
10806 		nr_irqs = 1;
10807 
10808 	for (i = 0; i < nr_irqs; i++)
10809 		free_irq(pci_irq_vector(phba->pcidev, i), phba);
10810 	pci_free_irq_vectors(phba->pcidev);
10811 
10812 	/* Reset interrupt management states */
10813 	phba->intr_type = NONE;
10814 	phba->sli.slistat.sli_intr = 0;
10815 }
10816 
10817 /**
10818  * lpfc_find_cpu_handle - Find the CPU that corresponds to the specified Queue
10819  * @phba: pointer to lpfc hba data structure.
10820  * @id: EQ vector index or Hardware Queue index
10821  * @match: LPFC_FIND_BY_EQ = match by EQ
10822  *         LPFC_FIND_BY_HDWQ = match by Hardware Queue
10823  * Return the CPU that matches the selection criteria
10824  */
10825 static uint16_t
10826 lpfc_find_cpu_handle(struct lpfc_hba *phba, uint16_t id, int match)
10827 {
10828 	struct lpfc_vector_map_info *cpup;
10829 	int cpu;
10830 
10831 	/* Loop through all CPUs */
10832 	for_each_present_cpu(cpu) {
10833 		cpup = &phba->sli4_hba.cpu_map[cpu];
10834 
10835 		/* If we are matching by EQ, there may be multiple CPUs using
10836 		 * using the same vector, so select the one with
10837 		 * LPFC_CPU_FIRST_IRQ set.
10838 		 */
10839 		if ((match == LPFC_FIND_BY_EQ) &&
10840 		    (cpup->flag & LPFC_CPU_FIRST_IRQ) &&
10841 		    (cpup->eq == id))
10842 			return cpu;
10843 
10844 		/* If matching by HDWQ, select the first CPU that matches */
10845 		if ((match == LPFC_FIND_BY_HDWQ) && (cpup->hdwq == id))
10846 			return cpu;
10847 	}
10848 	return 0;
10849 }
10850 
10851 #ifdef CONFIG_X86
10852 /**
10853  * lpfc_find_hyper - Determine if the CPU map entry is hyper-threaded
10854  * @phba: pointer to lpfc hba data structure.
10855  * @cpu: CPU map index
10856  * @phys_id: CPU package physical id
10857  * @core_id: CPU core id
10858  */
10859 static int
10860 lpfc_find_hyper(struct lpfc_hba *phba, int cpu,
10861 		uint16_t phys_id, uint16_t core_id)
10862 {
10863 	struct lpfc_vector_map_info *cpup;
10864 	int idx;
10865 
10866 	for_each_present_cpu(idx) {
10867 		cpup = &phba->sli4_hba.cpu_map[idx];
10868 		/* Does the cpup match the one we are looking for */
10869 		if ((cpup->phys_id == phys_id) &&
10870 		    (cpup->core_id == core_id) &&
10871 		    (cpu != idx))
10872 			return 1;
10873 	}
10874 	return 0;
10875 }
10876 #endif
10877 
10878 /*
10879  * lpfc_assign_eq_map_info - Assigns eq for vector_map structure
10880  * @phba: pointer to lpfc hba data structure.
10881  * @eqidx: index for eq and irq vector
10882  * @flag: flags to set for vector_map structure
10883  * @cpu: cpu used to index vector_map structure
10884  *
10885  * The routine assigns eq info into vector_map structure
10886  */
10887 static inline void
10888 lpfc_assign_eq_map_info(struct lpfc_hba *phba, uint16_t eqidx, uint16_t flag,
10889 			unsigned int cpu)
10890 {
10891 	struct lpfc_vector_map_info *cpup = &phba->sli4_hba.cpu_map[cpu];
10892 	struct lpfc_hba_eq_hdl *eqhdl = lpfc_get_eq_hdl(eqidx);
10893 
10894 	cpup->eq = eqidx;
10895 	cpup->flag |= flag;
10896 
10897 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10898 			"3336 Set Affinity: CPU %d irq %d eq %d flag x%x\n",
10899 			cpu, eqhdl->irq, cpup->eq, cpup->flag);
10900 }
10901 
10902 /**
10903  * lpfc_cpu_map_array_init - Initialize cpu_map structure
10904  * @phba: pointer to lpfc hba data structure.
10905  *
10906  * The routine initializes the cpu_map array structure
10907  */
10908 static void
10909 lpfc_cpu_map_array_init(struct lpfc_hba *phba)
10910 {
10911 	struct lpfc_vector_map_info *cpup;
10912 	struct lpfc_eq_intr_info *eqi;
10913 	int cpu;
10914 
10915 	for_each_possible_cpu(cpu) {
10916 		cpup = &phba->sli4_hba.cpu_map[cpu];
10917 		cpup->phys_id = LPFC_VECTOR_MAP_EMPTY;
10918 		cpup->core_id = LPFC_VECTOR_MAP_EMPTY;
10919 		cpup->hdwq = LPFC_VECTOR_MAP_EMPTY;
10920 		cpup->eq = LPFC_VECTOR_MAP_EMPTY;
10921 		cpup->flag = 0;
10922 		eqi = per_cpu_ptr(phba->sli4_hba.eq_info, cpu);
10923 		INIT_LIST_HEAD(&eqi->list);
10924 		eqi->icnt = 0;
10925 	}
10926 }
10927 
10928 /**
10929  * lpfc_hba_eq_hdl_array_init - Initialize hba_eq_hdl structure
10930  * @phba: pointer to lpfc hba data structure.
10931  *
10932  * The routine initializes the hba_eq_hdl array structure
10933  */
10934 static void
10935 lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba)
10936 {
10937 	struct lpfc_hba_eq_hdl *eqhdl;
10938 	int i;
10939 
10940 	for (i = 0; i < phba->cfg_irq_chann; i++) {
10941 		eqhdl = lpfc_get_eq_hdl(i);
10942 		eqhdl->irq = LPFC_VECTOR_MAP_EMPTY;
10943 		eqhdl->phba = phba;
10944 	}
10945 }
10946 
10947 /**
10948  * lpfc_cpu_affinity_check - Check vector CPU affinity mappings
10949  * @phba: pointer to lpfc hba data structure.
10950  * @vectors: number of msix vectors allocated.
10951  *
10952  * The routine will figure out the CPU affinity assignment for every
10953  * MSI-X vector allocated for the HBA.
10954  * In addition, the CPU to IO channel mapping will be calculated
10955  * and the phba->sli4_hba.cpu_map array will reflect this.
10956  */
10957 static void
10958 lpfc_cpu_affinity_check(struct lpfc_hba *phba, int vectors)
10959 {
10960 	int i, cpu, idx, next_idx, new_cpu, start_cpu, first_cpu;
10961 	int max_phys_id, min_phys_id;
10962 	int max_core_id, min_core_id;
10963 	struct lpfc_vector_map_info *cpup;
10964 	struct lpfc_vector_map_info *new_cpup;
10965 #ifdef CONFIG_X86
10966 	struct cpuinfo_x86 *cpuinfo;
10967 #endif
10968 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
10969 	struct lpfc_hdwq_stat *c_stat;
10970 #endif
10971 
10972 	max_phys_id = 0;
10973 	min_phys_id = LPFC_VECTOR_MAP_EMPTY;
10974 	max_core_id = 0;
10975 	min_core_id = LPFC_VECTOR_MAP_EMPTY;
10976 
10977 	/* Update CPU map with physical id and core id of each CPU */
10978 	for_each_present_cpu(cpu) {
10979 		cpup = &phba->sli4_hba.cpu_map[cpu];
10980 #ifdef CONFIG_X86
10981 		cpuinfo = &cpu_data(cpu);
10982 		cpup->phys_id = cpuinfo->phys_proc_id;
10983 		cpup->core_id = cpuinfo->cpu_core_id;
10984 		if (lpfc_find_hyper(phba, cpu, cpup->phys_id, cpup->core_id))
10985 			cpup->flag |= LPFC_CPU_MAP_HYPER;
10986 #else
10987 		/* No distinction between CPUs for other platforms */
10988 		cpup->phys_id = 0;
10989 		cpup->core_id = cpu;
10990 #endif
10991 
10992 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
10993 				"3328 CPU %d physid %d coreid %d flag x%x\n",
10994 				cpu, cpup->phys_id, cpup->core_id, cpup->flag);
10995 
10996 		if (cpup->phys_id > max_phys_id)
10997 			max_phys_id = cpup->phys_id;
10998 		if (cpup->phys_id < min_phys_id)
10999 			min_phys_id = cpup->phys_id;
11000 
11001 		if (cpup->core_id > max_core_id)
11002 			max_core_id = cpup->core_id;
11003 		if (cpup->core_id < min_core_id)
11004 			min_core_id = cpup->core_id;
11005 	}
11006 
11007 	/* After looking at each irq vector assigned to this pcidev, its
11008 	 * possible to see that not ALL CPUs have been accounted for.
11009 	 * Next we will set any unassigned (unaffinitized) cpu map
11010 	 * entries to a IRQ on the same phys_id.
11011 	 */
11012 	first_cpu = cpumask_first(cpu_present_mask);
11013 	start_cpu = first_cpu;
11014 
11015 	for_each_present_cpu(cpu) {
11016 		cpup = &phba->sli4_hba.cpu_map[cpu];
11017 
11018 		/* Is this CPU entry unassigned */
11019 		if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
11020 			/* Mark CPU as IRQ not assigned by the kernel */
11021 			cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
11022 
11023 			/* If so, find a new_cpup thats on the the SAME
11024 			 * phys_id as cpup. start_cpu will start where we
11025 			 * left off so all unassigned entries don't get assgined
11026 			 * the IRQ of the first entry.
11027 			 */
11028 			new_cpu = start_cpu;
11029 			for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11030 				new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11031 				if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
11032 				    (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY) &&
11033 				    (new_cpup->phys_id == cpup->phys_id))
11034 					goto found_same;
11035 				new_cpu = cpumask_next(
11036 					new_cpu, cpu_present_mask);
11037 				if (new_cpu == nr_cpumask_bits)
11038 					new_cpu = first_cpu;
11039 			}
11040 			/* At this point, we leave the CPU as unassigned */
11041 			continue;
11042 found_same:
11043 			/* We found a matching phys_id, so copy the IRQ info */
11044 			cpup->eq = new_cpup->eq;
11045 
11046 			/* Bump start_cpu to the next slot to minmize the
11047 			 * chance of having multiple unassigned CPU entries
11048 			 * selecting the same IRQ.
11049 			 */
11050 			start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11051 			if (start_cpu == nr_cpumask_bits)
11052 				start_cpu = first_cpu;
11053 
11054 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11055 					"3337 Set Affinity: CPU %d "
11056 					"eq %d from peer cpu %d same "
11057 					"phys_id (%d)\n",
11058 					cpu, cpup->eq, new_cpu,
11059 					cpup->phys_id);
11060 		}
11061 	}
11062 
11063 	/* Set any unassigned cpu map entries to a IRQ on any phys_id */
11064 	start_cpu = first_cpu;
11065 
11066 	for_each_present_cpu(cpu) {
11067 		cpup = &phba->sli4_hba.cpu_map[cpu];
11068 
11069 		/* Is this entry unassigned */
11070 		if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
11071 			/* Mark it as IRQ not assigned by the kernel */
11072 			cpup->flag |= LPFC_CPU_MAP_UNASSIGN;
11073 
11074 			/* If so, find a new_cpup thats on ANY phys_id
11075 			 * as the cpup. start_cpu will start where we
11076 			 * left off so all unassigned entries don't get
11077 			 * assigned the IRQ of the first entry.
11078 			 */
11079 			new_cpu = start_cpu;
11080 			for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11081 				new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11082 				if (!(new_cpup->flag & LPFC_CPU_MAP_UNASSIGN) &&
11083 				    (new_cpup->eq != LPFC_VECTOR_MAP_EMPTY))
11084 					goto found_any;
11085 				new_cpu = cpumask_next(
11086 					new_cpu, cpu_present_mask);
11087 				if (new_cpu == nr_cpumask_bits)
11088 					new_cpu = first_cpu;
11089 			}
11090 			/* We should never leave an entry unassigned */
11091 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
11092 					"3339 Set Affinity: CPU %d "
11093 					"eq %d UNASSIGNED\n",
11094 					cpup->hdwq, cpup->eq);
11095 			continue;
11096 found_any:
11097 			/* We found an available entry, copy the IRQ info */
11098 			cpup->eq = new_cpup->eq;
11099 
11100 			/* Bump start_cpu to the next slot to minmize the
11101 			 * chance of having multiple unassigned CPU entries
11102 			 * selecting the same IRQ.
11103 			 */
11104 			start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11105 			if (start_cpu == nr_cpumask_bits)
11106 				start_cpu = first_cpu;
11107 
11108 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11109 					"3338 Set Affinity: CPU %d "
11110 					"eq %d from peer cpu %d (%d/%d)\n",
11111 					cpu, cpup->eq, new_cpu,
11112 					new_cpup->phys_id, new_cpup->core_id);
11113 		}
11114 	}
11115 
11116 	/* Assign hdwq indices that are unique across all cpus in the map
11117 	 * that are also FIRST_CPUs.
11118 	 */
11119 	idx = 0;
11120 	for_each_present_cpu(cpu) {
11121 		cpup = &phba->sli4_hba.cpu_map[cpu];
11122 
11123 		/* Only FIRST IRQs get a hdwq index assignment. */
11124 		if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
11125 			continue;
11126 
11127 		/* 1 to 1, the first LPFC_CPU_FIRST_IRQ cpus to a unique hdwq */
11128 		cpup->hdwq = idx;
11129 		idx++;
11130 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11131 				"3333 Set Affinity: CPU %d (phys %d core %d): "
11132 				"hdwq %d eq %d flg x%x\n",
11133 				cpu, cpup->phys_id, cpup->core_id,
11134 				cpup->hdwq, cpup->eq, cpup->flag);
11135 	}
11136 	/* Associate a hdwq with each cpu_map entry
11137 	 * This will be 1 to 1 - hdwq to cpu, unless there are less
11138 	 * hardware queues then CPUs. For that case we will just round-robin
11139 	 * the available hardware queues as they get assigned to CPUs.
11140 	 * The next_idx is the idx from the FIRST_CPU loop above to account
11141 	 * for irq_chann < hdwq.  The idx is used for round-robin assignments
11142 	 * and needs to start at 0.
11143 	 */
11144 	next_idx = idx;
11145 	start_cpu = 0;
11146 	idx = 0;
11147 	for_each_present_cpu(cpu) {
11148 		cpup = &phba->sli4_hba.cpu_map[cpu];
11149 
11150 		/* FIRST cpus are already mapped. */
11151 		if (cpup->flag & LPFC_CPU_FIRST_IRQ)
11152 			continue;
11153 
11154 		/* If the cfg_irq_chann < cfg_hdw_queue, set the hdwq
11155 		 * of the unassigned cpus to the next idx so that all
11156 		 * hdw queues are fully utilized.
11157 		 */
11158 		if (next_idx < phba->cfg_hdw_queue) {
11159 			cpup->hdwq = next_idx;
11160 			next_idx++;
11161 			continue;
11162 		}
11163 
11164 		/* Not a First CPU and all hdw_queues are used.  Reuse a
11165 		 * Hardware Queue for another CPU, so be smart about it
11166 		 * and pick one that has its IRQ/EQ mapped to the same phys_id
11167 		 * (CPU package) and core_id.
11168 		 */
11169 		new_cpu = start_cpu;
11170 		for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11171 			new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11172 			if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
11173 			    new_cpup->phys_id == cpup->phys_id &&
11174 			    new_cpup->core_id == cpup->core_id) {
11175 				goto found_hdwq;
11176 			}
11177 			new_cpu = cpumask_next(new_cpu, cpu_present_mask);
11178 			if (new_cpu == nr_cpumask_bits)
11179 				new_cpu = first_cpu;
11180 		}
11181 
11182 		/* If we can't match both phys_id and core_id,
11183 		 * settle for just a phys_id match.
11184 		 */
11185 		new_cpu = start_cpu;
11186 		for (i = 0; i < phba->sli4_hba.num_present_cpu; i++) {
11187 			new_cpup = &phba->sli4_hba.cpu_map[new_cpu];
11188 			if (new_cpup->hdwq != LPFC_VECTOR_MAP_EMPTY &&
11189 			    new_cpup->phys_id == cpup->phys_id)
11190 				goto found_hdwq;
11191 
11192 			new_cpu = cpumask_next(new_cpu, cpu_present_mask);
11193 			if (new_cpu == nr_cpumask_bits)
11194 				new_cpu = first_cpu;
11195 		}
11196 
11197 		/* Otherwise just round robin on cfg_hdw_queue */
11198 		cpup->hdwq = idx % phba->cfg_hdw_queue;
11199 		idx++;
11200 		goto logit;
11201  found_hdwq:
11202 		/* We found an available entry, copy the IRQ info */
11203 		start_cpu = cpumask_next(new_cpu, cpu_present_mask);
11204 		if (start_cpu == nr_cpumask_bits)
11205 			start_cpu = first_cpu;
11206 		cpup->hdwq = new_cpup->hdwq;
11207  logit:
11208 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11209 				"3335 Set Affinity: CPU %d (phys %d core %d): "
11210 				"hdwq %d eq %d flg x%x\n",
11211 				cpu, cpup->phys_id, cpup->core_id,
11212 				cpup->hdwq, cpup->eq, cpup->flag);
11213 	}
11214 
11215 	/*
11216 	 * Initialize the cpu_map slots for not-present cpus in case
11217 	 * a cpu is hot-added. Perform a simple hdwq round robin assignment.
11218 	 */
11219 	idx = 0;
11220 	for_each_possible_cpu(cpu) {
11221 		cpup = &phba->sli4_hba.cpu_map[cpu];
11222 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
11223 		c_stat = per_cpu_ptr(phba->sli4_hba.c_stat, cpu);
11224 		c_stat->hdwq_no = cpup->hdwq;
11225 #endif
11226 		if (cpup->hdwq != LPFC_VECTOR_MAP_EMPTY)
11227 			continue;
11228 
11229 		cpup->hdwq = idx++ % phba->cfg_hdw_queue;
11230 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
11231 		c_stat->hdwq_no = cpup->hdwq;
11232 #endif
11233 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11234 				"3340 Set Affinity: not present "
11235 				"CPU %d hdwq %d\n",
11236 				cpu, cpup->hdwq);
11237 	}
11238 
11239 	/* The cpu_map array will be used later during initialization
11240 	 * when EQ / CQ / WQs are allocated and configured.
11241 	 */
11242 	return;
11243 }
11244 
11245 /**
11246  * lpfc_cpuhp_get_eq
11247  *
11248  * @phba:   pointer to lpfc hba data structure.
11249  * @cpu:    cpu going offline
11250  * @eqlist: eq list to append to
11251  */
11252 static int
11253 lpfc_cpuhp_get_eq(struct lpfc_hba *phba, unsigned int cpu,
11254 		  struct list_head *eqlist)
11255 {
11256 	const struct cpumask *maskp;
11257 	struct lpfc_queue *eq;
11258 	struct cpumask *tmp;
11259 	u16 idx;
11260 
11261 	tmp = kzalloc(cpumask_size(), GFP_KERNEL);
11262 	if (!tmp)
11263 		return -ENOMEM;
11264 
11265 	for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11266 		maskp = pci_irq_get_affinity(phba->pcidev, idx);
11267 		if (!maskp)
11268 			continue;
11269 		/*
11270 		 * if irq is not affinitized to the cpu going
11271 		 * then we don't need to poll the eq attached
11272 		 * to it.
11273 		 */
11274 		if (!cpumask_and(tmp, maskp, cpumask_of(cpu)))
11275 			continue;
11276 		/* get the cpus that are online and are affini-
11277 		 * tized to this irq vector.  If the count is
11278 		 * more than 1 then cpuhp is not going to shut-
11279 		 * down this vector.  Since this cpu has not
11280 		 * gone offline yet, we need >1.
11281 		 */
11282 		cpumask_and(tmp, maskp, cpu_online_mask);
11283 		if (cpumask_weight(tmp) > 1)
11284 			continue;
11285 
11286 		/* Now that we have an irq to shutdown, get the eq
11287 		 * mapped to this irq.  Note: multiple hdwq's in
11288 		 * the software can share an eq, but eventually
11289 		 * only eq will be mapped to this vector
11290 		 */
11291 		eq = phba->sli4_hba.hba_eq_hdl[idx].eq;
11292 		list_add(&eq->_poll_list, eqlist);
11293 	}
11294 	kfree(tmp);
11295 	return 0;
11296 }
11297 
11298 static void __lpfc_cpuhp_remove(struct lpfc_hba *phba)
11299 {
11300 	if (phba->sli_rev != LPFC_SLI_REV4)
11301 		return;
11302 
11303 	cpuhp_state_remove_instance_nocalls(lpfc_cpuhp_state,
11304 					    &phba->cpuhp);
11305 	/*
11306 	 * unregistering the instance doesn't stop the polling
11307 	 * timer. Wait for the poll timer to retire.
11308 	 */
11309 	synchronize_rcu();
11310 	del_timer_sync(&phba->cpuhp_poll_timer);
11311 }
11312 
11313 static void lpfc_cpuhp_remove(struct lpfc_hba *phba)
11314 {
11315 	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
11316 		return;
11317 
11318 	__lpfc_cpuhp_remove(phba);
11319 }
11320 
11321 static void lpfc_cpuhp_add(struct lpfc_hba *phba)
11322 {
11323 	if (phba->sli_rev != LPFC_SLI_REV4)
11324 		return;
11325 
11326 	rcu_read_lock();
11327 
11328 	if (!list_empty(&phba->poll_list))
11329 		mod_timer(&phba->cpuhp_poll_timer,
11330 			  jiffies + msecs_to_jiffies(LPFC_POLL_HB));
11331 
11332 	rcu_read_unlock();
11333 
11334 	cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state,
11335 					 &phba->cpuhp);
11336 }
11337 
11338 static int __lpfc_cpuhp_checks(struct lpfc_hba *phba, int *retval)
11339 {
11340 	if (phba->pport->load_flag & FC_UNLOADING) {
11341 		*retval = -EAGAIN;
11342 		return true;
11343 	}
11344 
11345 	if (phba->sli_rev != LPFC_SLI_REV4) {
11346 		*retval = 0;
11347 		return true;
11348 	}
11349 
11350 	/* proceed with the hotplug */
11351 	return false;
11352 }
11353 
11354 /**
11355  * lpfc_irq_set_aff - set IRQ affinity
11356  * @eqhdl: EQ handle
11357  * @cpu: cpu to set affinity
11358  *
11359  **/
11360 static inline void
11361 lpfc_irq_set_aff(struct lpfc_hba_eq_hdl *eqhdl, unsigned int cpu)
11362 {
11363 	cpumask_clear(&eqhdl->aff_mask);
11364 	cpumask_set_cpu(cpu, &eqhdl->aff_mask);
11365 	irq_set_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
11366 	irq_set_affinity_hint(eqhdl->irq, &eqhdl->aff_mask);
11367 }
11368 
11369 /**
11370  * lpfc_irq_clear_aff - clear IRQ affinity
11371  * @eqhdl: EQ handle
11372  *
11373  **/
11374 static inline void
11375 lpfc_irq_clear_aff(struct lpfc_hba_eq_hdl *eqhdl)
11376 {
11377 	cpumask_clear(&eqhdl->aff_mask);
11378 	irq_clear_status_flags(eqhdl->irq, IRQ_NO_BALANCING);
11379 }
11380 
11381 /**
11382  * lpfc_irq_rebalance - rebalances IRQ affinity according to cpuhp event
11383  * @phba: pointer to HBA context object.
11384  * @cpu: cpu going offline/online
11385  * @offline: true, cpu is going offline. false, cpu is coming online.
11386  *
11387  * If cpu is going offline, we'll try our best effort to find the next
11388  * online cpu on the phba's original_mask and migrate all offlining IRQ
11389  * affinities.
11390  *
11391  * If cpu is coming online, reaffinitize the IRQ back to the onlining cpu.
11392  *
11393  * Note: Call only if NUMA or NHT mode is enabled, otherwise rely on
11394  *	 PCI_IRQ_AFFINITY to auto-manage IRQ affinity.
11395  *
11396  **/
11397 static void
11398 lpfc_irq_rebalance(struct lpfc_hba *phba, unsigned int cpu, bool offline)
11399 {
11400 	struct lpfc_vector_map_info *cpup;
11401 	struct cpumask *aff_mask;
11402 	unsigned int cpu_select, cpu_next, idx;
11403 	const struct cpumask *orig_mask;
11404 
11405 	if (phba->irq_chann_mode == NORMAL_MODE)
11406 		return;
11407 
11408 	orig_mask = &phba->sli4_hba.irq_aff_mask;
11409 
11410 	if (!cpumask_test_cpu(cpu, orig_mask))
11411 		return;
11412 
11413 	cpup = &phba->sli4_hba.cpu_map[cpu];
11414 
11415 	if (!(cpup->flag & LPFC_CPU_FIRST_IRQ))
11416 		return;
11417 
11418 	if (offline) {
11419 		/* Find next online CPU on original mask */
11420 		cpu_next = cpumask_next_wrap(cpu, orig_mask, cpu, true);
11421 		cpu_select = lpfc_next_online_cpu(orig_mask, cpu_next);
11422 
11423 		/* Found a valid CPU */
11424 		if ((cpu_select < nr_cpu_ids) && (cpu_select != cpu)) {
11425 			/* Go through each eqhdl and ensure offlining
11426 			 * cpu aff_mask is migrated
11427 			 */
11428 			for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11429 				aff_mask = lpfc_get_aff_mask(idx);
11430 
11431 				/* Migrate affinity */
11432 				if (cpumask_test_cpu(cpu, aff_mask))
11433 					lpfc_irq_set_aff(lpfc_get_eq_hdl(idx),
11434 							 cpu_select);
11435 			}
11436 		} else {
11437 			/* Rely on irqbalance if no online CPUs left on NUMA */
11438 			for (idx = 0; idx < phba->cfg_irq_chann; idx++)
11439 				lpfc_irq_clear_aff(lpfc_get_eq_hdl(idx));
11440 		}
11441 	} else {
11442 		/* Migrate affinity back to this CPU */
11443 		lpfc_irq_set_aff(lpfc_get_eq_hdl(cpup->eq), cpu);
11444 	}
11445 }
11446 
11447 static int lpfc_cpu_offline(unsigned int cpu, struct hlist_node *node)
11448 {
11449 	struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
11450 	struct lpfc_queue *eq, *next;
11451 	LIST_HEAD(eqlist);
11452 	int retval;
11453 
11454 	if (!phba) {
11455 		WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
11456 		return 0;
11457 	}
11458 
11459 	if (__lpfc_cpuhp_checks(phba, &retval))
11460 		return retval;
11461 
11462 	lpfc_irq_rebalance(phba, cpu, true);
11463 
11464 	retval = lpfc_cpuhp_get_eq(phba, cpu, &eqlist);
11465 	if (retval)
11466 		return retval;
11467 
11468 	/* start polling on these eq's */
11469 	list_for_each_entry_safe(eq, next, &eqlist, _poll_list) {
11470 		list_del_init(&eq->_poll_list);
11471 		lpfc_sli4_start_polling(eq);
11472 	}
11473 
11474 	return 0;
11475 }
11476 
11477 static int lpfc_cpu_online(unsigned int cpu, struct hlist_node *node)
11478 {
11479 	struct lpfc_hba *phba = hlist_entry_safe(node, struct lpfc_hba, cpuhp);
11480 	struct lpfc_queue *eq, *next;
11481 	unsigned int n;
11482 	int retval;
11483 
11484 	if (!phba) {
11485 		WARN_ONCE(!phba, "cpu: %u. phba:NULL", raw_smp_processor_id());
11486 		return 0;
11487 	}
11488 
11489 	if (__lpfc_cpuhp_checks(phba, &retval))
11490 		return retval;
11491 
11492 	lpfc_irq_rebalance(phba, cpu, false);
11493 
11494 	list_for_each_entry_safe(eq, next, &phba->poll_list, _poll_list) {
11495 		n = lpfc_find_cpu_handle(phba, eq->hdwq, LPFC_FIND_BY_HDWQ);
11496 		if (n == cpu)
11497 			lpfc_sli4_stop_polling(eq);
11498 	}
11499 
11500 	return 0;
11501 }
11502 
11503 /**
11504  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
11505  * @phba: pointer to lpfc hba data structure.
11506  *
11507  * This routine is invoked to enable the MSI-X interrupt vectors to device
11508  * with SLI-4 interface spec.  It also allocates MSI-X vectors and maps them
11509  * to cpus on the system.
11510  *
11511  * When cfg_irq_numa is enabled, the adapter will only allocate vectors for
11512  * the number of cpus on the same numa node as this adapter.  The vectors are
11513  * allocated without requesting OS affinity mapping.  A vector will be
11514  * allocated and assigned to each online and offline cpu.  If the cpu is
11515  * online, then affinity will be set to that cpu.  If the cpu is offline, then
11516  * affinity will be set to the nearest peer cpu within the numa node that is
11517  * online.  If there are no online cpus within the numa node, affinity is not
11518  * assigned and the OS may do as it pleases. Note: cpu vector affinity mapping
11519  * is consistent with the way cpu online/offline is handled when cfg_irq_numa is
11520  * configured.
11521  *
11522  * If numa mode is not enabled and there is more than 1 vector allocated, then
11523  * the driver relies on the managed irq interface where the OS assigns vector to
11524  * cpu affinity.  The driver will then use that affinity mapping to setup its
11525  * cpu mapping table.
11526  *
11527  * Return codes
11528  * 0 - successful
11529  * other values - error
11530  **/
11531 static int
11532 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
11533 {
11534 	int vectors, rc, index;
11535 	char *name;
11536 	const struct cpumask *aff_mask = NULL;
11537 	unsigned int cpu = 0, cpu_cnt = 0, cpu_select = nr_cpu_ids;
11538 	struct lpfc_vector_map_info *cpup;
11539 	struct lpfc_hba_eq_hdl *eqhdl;
11540 	const struct cpumask *maskp;
11541 	unsigned int flags = PCI_IRQ_MSIX;
11542 
11543 	/* Set up MSI-X multi-message vectors */
11544 	vectors = phba->cfg_irq_chann;
11545 
11546 	if (phba->irq_chann_mode != NORMAL_MODE)
11547 		aff_mask = &phba->sli4_hba.irq_aff_mask;
11548 
11549 	if (aff_mask) {
11550 		cpu_cnt = cpumask_weight(aff_mask);
11551 		vectors = min(phba->cfg_irq_chann, cpu_cnt);
11552 
11553 		/* cpu: iterates over aff_mask including offline or online
11554 		 * cpu_select: iterates over online aff_mask to set affinity
11555 		 */
11556 		cpu = cpumask_first(aff_mask);
11557 		cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
11558 	} else {
11559 		flags |= PCI_IRQ_AFFINITY;
11560 	}
11561 
11562 	rc = pci_alloc_irq_vectors(phba->pcidev, 1, vectors, flags);
11563 	if (rc < 0) {
11564 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11565 				"0484 PCI enable MSI-X failed (%d)\n", rc);
11566 		goto vec_fail_out;
11567 	}
11568 	vectors = rc;
11569 
11570 	/* Assign MSI-X vectors to interrupt handlers */
11571 	for (index = 0; index < vectors; index++) {
11572 		eqhdl = lpfc_get_eq_hdl(index);
11573 		name = eqhdl->handler_name;
11574 		memset(name, 0, LPFC_SLI4_HANDLER_NAME_SZ);
11575 		snprintf(name, LPFC_SLI4_HANDLER_NAME_SZ,
11576 			 LPFC_DRIVER_HANDLER_NAME"%d", index);
11577 
11578 		eqhdl->idx = index;
11579 		rc = request_irq(pci_irq_vector(phba->pcidev, index),
11580 			 &lpfc_sli4_hba_intr_handler, 0,
11581 			 name, eqhdl);
11582 		if (rc) {
11583 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11584 					"0486 MSI-X fast-path (%d) "
11585 					"request_irq failed (%d)\n", index, rc);
11586 			goto cfg_fail_out;
11587 		}
11588 
11589 		eqhdl->irq = pci_irq_vector(phba->pcidev, index);
11590 
11591 		if (aff_mask) {
11592 			/* If found a neighboring online cpu, set affinity */
11593 			if (cpu_select < nr_cpu_ids)
11594 				lpfc_irq_set_aff(eqhdl, cpu_select);
11595 
11596 			/* Assign EQ to cpu_map */
11597 			lpfc_assign_eq_map_info(phba, index,
11598 						LPFC_CPU_FIRST_IRQ,
11599 						cpu);
11600 
11601 			/* Iterate to next offline or online cpu in aff_mask */
11602 			cpu = cpumask_next(cpu, aff_mask);
11603 
11604 			/* Find next online cpu in aff_mask to set affinity */
11605 			cpu_select = lpfc_next_online_cpu(aff_mask, cpu);
11606 		} else if (vectors == 1) {
11607 			cpu = cpumask_first(cpu_present_mask);
11608 			lpfc_assign_eq_map_info(phba, index, LPFC_CPU_FIRST_IRQ,
11609 						cpu);
11610 		} else {
11611 			maskp = pci_irq_get_affinity(phba->pcidev, index);
11612 
11613 			/* Loop through all CPUs associated with vector index */
11614 			for_each_cpu_and(cpu, maskp, cpu_present_mask) {
11615 				cpup = &phba->sli4_hba.cpu_map[cpu];
11616 
11617 				/* If this is the first CPU thats assigned to
11618 				 * this vector, set LPFC_CPU_FIRST_IRQ.
11619 				 *
11620 				 * With certain platforms its possible that irq
11621 				 * vectors are affinitized to all the cpu's.
11622 				 * This can result in each cpu_map.eq to be set
11623 				 * to the last vector, resulting in overwrite
11624 				 * of all the previous cpu_map.eq.  Ensure that
11625 				 * each vector receives a place in cpu_map.
11626 				 * Later call to lpfc_cpu_affinity_check will
11627 				 * ensure we are nicely balanced out.
11628 				 */
11629 				if (cpup->eq != LPFC_VECTOR_MAP_EMPTY)
11630 					continue;
11631 				lpfc_assign_eq_map_info(phba, index,
11632 							LPFC_CPU_FIRST_IRQ,
11633 							cpu);
11634 				break;
11635 			}
11636 		}
11637 	}
11638 
11639 	if (vectors != phba->cfg_irq_chann) {
11640 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11641 				"3238 Reducing IO channels to match number of "
11642 				"MSI-X vectors, requested %d got %d\n",
11643 				phba->cfg_irq_chann, vectors);
11644 		if (phba->cfg_irq_chann > vectors)
11645 			phba->cfg_irq_chann = vectors;
11646 	}
11647 
11648 	return rc;
11649 
11650 cfg_fail_out:
11651 	/* free the irq already requested */
11652 	for (--index; index >= 0; index--) {
11653 		eqhdl = lpfc_get_eq_hdl(index);
11654 		lpfc_irq_clear_aff(eqhdl);
11655 		irq_set_affinity_hint(eqhdl->irq, NULL);
11656 		free_irq(eqhdl->irq, eqhdl);
11657 	}
11658 
11659 	/* Unconfigure MSI-X capability structure */
11660 	pci_free_irq_vectors(phba->pcidev);
11661 
11662 vec_fail_out:
11663 	return rc;
11664 }
11665 
11666 /**
11667  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
11668  * @phba: pointer to lpfc hba data structure.
11669  *
11670  * This routine is invoked to enable the MSI interrupt mode to device with
11671  * SLI-4 interface spec. The kernel function pci_alloc_irq_vectors() is
11672  * called to enable the MSI vector. The device driver is responsible for
11673  * calling the request_irq() to register MSI vector with a interrupt the
11674  * handler, which is done in this function.
11675  *
11676  * Return codes
11677  * 	0 - successful
11678  * 	other values - error
11679  **/
11680 static int
11681 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
11682 {
11683 	int rc, index;
11684 	unsigned int cpu;
11685 	struct lpfc_hba_eq_hdl *eqhdl;
11686 
11687 	rc = pci_alloc_irq_vectors(phba->pcidev, 1, 1,
11688 				   PCI_IRQ_MSI | PCI_IRQ_AFFINITY);
11689 	if (rc > 0)
11690 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11691 				"0487 PCI enable MSI mode success.\n");
11692 	else {
11693 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
11694 				"0488 PCI enable MSI mode failed (%d)\n", rc);
11695 		return rc ? rc : -1;
11696 	}
11697 
11698 	rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
11699 			 0, LPFC_DRIVER_NAME, phba);
11700 	if (rc) {
11701 		pci_free_irq_vectors(phba->pcidev);
11702 		lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
11703 				"0490 MSI request_irq failed (%d)\n", rc);
11704 		return rc;
11705 	}
11706 
11707 	eqhdl = lpfc_get_eq_hdl(0);
11708 	eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
11709 
11710 	cpu = cpumask_first(cpu_present_mask);
11711 	lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu);
11712 
11713 	for (index = 0; index < phba->cfg_irq_chann; index++) {
11714 		eqhdl = lpfc_get_eq_hdl(index);
11715 		eqhdl->idx = index;
11716 	}
11717 
11718 	return 0;
11719 }
11720 
11721 /**
11722  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
11723  * @phba: pointer to lpfc hba data structure.
11724  * @cfg_mode: Interrupt configuration mode (INTx, MSI or MSI-X).
11725  *
11726  * This routine is invoked to enable device interrupt and associate driver's
11727  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
11728  * interface spec. Depends on the interrupt mode configured to the driver,
11729  * the driver will try to fallback from the configured interrupt mode to an
11730  * interrupt mode which is supported by the platform, kernel, and device in
11731  * the order of:
11732  * MSI-X -> MSI -> IRQ.
11733  *
11734  * Return codes
11735  * 	0 - successful
11736  * 	other values - error
11737  **/
11738 static uint32_t
11739 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
11740 {
11741 	uint32_t intr_mode = LPFC_INTR_ERROR;
11742 	int retval, idx;
11743 
11744 	if (cfg_mode == 2) {
11745 		/* Preparation before conf_msi mbox cmd */
11746 		retval = 0;
11747 		if (!retval) {
11748 			/* Now, try to enable MSI-X interrupt mode */
11749 			retval = lpfc_sli4_enable_msix(phba);
11750 			if (!retval) {
11751 				/* Indicate initialization to MSI-X mode */
11752 				phba->intr_type = MSIX;
11753 				intr_mode = 2;
11754 			}
11755 		}
11756 	}
11757 
11758 	/* Fallback to MSI if MSI-X initialization failed */
11759 	if (cfg_mode >= 1 && phba->intr_type == NONE) {
11760 		retval = lpfc_sli4_enable_msi(phba);
11761 		if (!retval) {
11762 			/* Indicate initialization to MSI mode */
11763 			phba->intr_type = MSI;
11764 			intr_mode = 1;
11765 		}
11766 	}
11767 
11768 	/* Fallback to INTx if both MSI-X/MSI initalization failed */
11769 	if (phba->intr_type == NONE) {
11770 		retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
11771 				     IRQF_SHARED, LPFC_DRIVER_NAME, phba);
11772 		if (!retval) {
11773 			struct lpfc_hba_eq_hdl *eqhdl;
11774 			unsigned int cpu;
11775 
11776 			/* Indicate initialization to INTx mode */
11777 			phba->intr_type = INTx;
11778 			intr_mode = 0;
11779 
11780 			eqhdl = lpfc_get_eq_hdl(0);
11781 			eqhdl->irq = pci_irq_vector(phba->pcidev, 0);
11782 
11783 			cpu = cpumask_first(cpu_present_mask);
11784 			lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ,
11785 						cpu);
11786 			for (idx = 0; idx < phba->cfg_irq_chann; idx++) {
11787 				eqhdl = lpfc_get_eq_hdl(idx);
11788 				eqhdl->idx = idx;
11789 			}
11790 		}
11791 	}
11792 	return intr_mode;
11793 }
11794 
11795 /**
11796  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
11797  * @phba: pointer to lpfc hba data structure.
11798  *
11799  * This routine is invoked to disable device interrupt and disassociate
11800  * the driver's interrupt handler(s) from interrupt vector(s) to device
11801  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
11802  * will release the interrupt vector(s) for the message signaled interrupt.
11803  **/
11804 static void
11805 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
11806 {
11807 	/* Disable the currently initialized interrupt mode */
11808 	if (phba->intr_type == MSIX) {
11809 		int index;
11810 		struct lpfc_hba_eq_hdl *eqhdl;
11811 
11812 		/* Free up MSI-X multi-message vectors */
11813 		for (index = 0; index < phba->cfg_irq_chann; index++) {
11814 			eqhdl = lpfc_get_eq_hdl(index);
11815 			lpfc_irq_clear_aff(eqhdl);
11816 			irq_set_affinity_hint(eqhdl->irq, NULL);
11817 			free_irq(eqhdl->irq, eqhdl);
11818 		}
11819 	} else {
11820 		free_irq(phba->pcidev->irq, phba);
11821 	}
11822 
11823 	pci_free_irq_vectors(phba->pcidev);
11824 
11825 	/* Reset interrupt management states */
11826 	phba->intr_type = NONE;
11827 	phba->sli.slistat.sli_intr = 0;
11828 }
11829 
11830 /**
11831  * lpfc_unset_hba - Unset SLI3 hba device initialization
11832  * @phba: pointer to lpfc hba data structure.
11833  *
11834  * This routine is invoked to unset the HBA device initialization steps to
11835  * a device with SLI-3 interface spec.
11836  **/
11837 static void
11838 lpfc_unset_hba(struct lpfc_hba *phba)
11839 {
11840 	struct lpfc_vport *vport = phba->pport;
11841 	struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
11842 
11843 	spin_lock_irq(shost->host_lock);
11844 	vport->load_flag |= FC_UNLOADING;
11845 	spin_unlock_irq(shost->host_lock);
11846 
11847 	kfree(phba->vpi_bmask);
11848 	kfree(phba->vpi_ids);
11849 
11850 	lpfc_stop_hba_timers(phba);
11851 
11852 	phba->pport->work_port_events = 0;
11853 
11854 	lpfc_sli_hba_down(phba);
11855 
11856 	lpfc_sli_brdrestart(phba);
11857 
11858 	lpfc_sli_disable_intr(phba);
11859 
11860 	return;
11861 }
11862 
11863 /**
11864  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
11865  * @phba: Pointer to HBA context object.
11866  *
11867  * This function is called in the SLI4 code path to wait for completion
11868  * of device's XRIs exchange busy. It will check the XRI exchange busy
11869  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
11870  * that, it will check the XRI exchange busy on outstanding FCP and ELS
11871  * I/Os every 30 seconds, log error message, and wait forever. Only when
11872  * all XRI exchange busy complete, the driver unload shall proceed with
11873  * invoking the function reset ioctl mailbox command to the CNA and the
11874  * the rest of the driver unload resource release.
11875  **/
11876 static void
11877 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
11878 {
11879 	struct lpfc_sli4_hdw_queue *qp;
11880 	int idx, ccnt;
11881 	int wait_time = 0;
11882 	int io_xri_cmpl = 1;
11883 	int nvmet_xri_cmpl = 1;
11884 	int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
11885 
11886 	/* Driver just aborted IOs during the hba_unset process.  Pause
11887 	 * here to give the HBA time to complete the IO and get entries
11888 	 * into the abts lists.
11889 	 */
11890 	msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1 * 5);
11891 
11892 	/* Wait for NVME pending IO to flush back to transport. */
11893 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
11894 		lpfc_nvme_wait_for_io_drain(phba);
11895 
11896 	ccnt = 0;
11897 	for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
11898 		qp = &phba->sli4_hba.hdwq[idx];
11899 		io_xri_cmpl = list_empty(&qp->lpfc_abts_io_buf_list);
11900 		if (!io_xri_cmpl) /* if list is NOT empty */
11901 			ccnt++;
11902 	}
11903 	if (ccnt)
11904 		io_xri_cmpl = 0;
11905 
11906 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11907 		nvmet_xri_cmpl =
11908 			list_empty(&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
11909 	}
11910 
11911 	while (!els_xri_cmpl || !io_xri_cmpl || !nvmet_xri_cmpl) {
11912 		if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
11913 			if (!nvmet_xri_cmpl)
11914 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11915 						"6424 NVMET XRI exchange busy "
11916 						"wait time: %d seconds.\n",
11917 						wait_time/1000);
11918 			if (!io_xri_cmpl)
11919 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11920 						"6100 IO XRI exchange busy "
11921 						"wait time: %d seconds.\n",
11922 						wait_time/1000);
11923 			if (!els_xri_cmpl)
11924 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
11925 						"2878 ELS XRI exchange busy "
11926 						"wait time: %d seconds.\n",
11927 						wait_time/1000);
11928 			msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
11929 			wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
11930 		} else {
11931 			msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
11932 			wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
11933 		}
11934 
11935 		ccnt = 0;
11936 		for (idx = 0; idx < phba->cfg_hdw_queue; idx++) {
11937 			qp = &phba->sli4_hba.hdwq[idx];
11938 			io_xri_cmpl = list_empty(
11939 			    &qp->lpfc_abts_io_buf_list);
11940 			if (!io_xri_cmpl) /* if list is NOT empty */
11941 				ccnt++;
11942 		}
11943 		if (ccnt)
11944 			io_xri_cmpl = 0;
11945 
11946 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
11947 			nvmet_xri_cmpl = list_empty(
11948 				&phba->sli4_hba.lpfc_abts_nvmet_ctx_list);
11949 		}
11950 		els_xri_cmpl =
11951 			list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
11952 
11953 	}
11954 }
11955 
11956 /**
11957  * lpfc_sli4_hba_unset - Unset the fcoe hba
11958  * @phba: Pointer to HBA context object.
11959  *
11960  * This function is called in the SLI4 code path to reset the HBA's FCoE
11961  * function. The caller is not required to hold any lock. This routine
11962  * issues PCI function reset mailbox command to reset the FCoE function.
11963  * At the end of the function, it calls lpfc_hba_down_post function to
11964  * free any pending commands.
11965  **/
11966 static void
11967 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
11968 {
11969 	int wait_cnt = 0;
11970 	LPFC_MBOXQ_t *mboxq;
11971 	struct pci_dev *pdev = phba->pcidev;
11972 
11973 	lpfc_stop_hba_timers(phba);
11974 	if (phba->pport)
11975 		phba->sli4_hba.intr_enable = 0;
11976 
11977 	/*
11978 	 * Gracefully wait out the potential current outstanding asynchronous
11979 	 * mailbox command.
11980 	 */
11981 
11982 	/* First, block any pending async mailbox command from posted */
11983 	spin_lock_irq(&phba->hbalock);
11984 	phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
11985 	spin_unlock_irq(&phba->hbalock);
11986 	/* Now, trying to wait it out if we can */
11987 	while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
11988 		msleep(10);
11989 		if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
11990 			break;
11991 	}
11992 	/* Forcefully release the outstanding mailbox command if timed out */
11993 	if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
11994 		spin_lock_irq(&phba->hbalock);
11995 		mboxq = phba->sli.mbox_active;
11996 		mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
11997 		__lpfc_mbox_cmpl_put(phba, mboxq);
11998 		phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
11999 		phba->sli.mbox_active = NULL;
12000 		spin_unlock_irq(&phba->hbalock);
12001 	}
12002 
12003 	/* Abort all iocbs associated with the hba */
12004 	lpfc_sli_hba_iocb_abort(phba);
12005 
12006 	/* Wait for completion of device XRI exchange busy */
12007 	lpfc_sli4_xri_exchange_busy_wait(phba);
12008 
12009 	/* per-phba callback de-registration for hotplug event */
12010 	if (phba->pport)
12011 		lpfc_cpuhp_remove(phba);
12012 
12013 	/* Disable PCI subsystem interrupt */
12014 	lpfc_sli4_disable_intr(phba);
12015 
12016 	/* Disable SR-IOV if enabled */
12017 	if (phba->cfg_sriov_nr_virtfn)
12018 		pci_disable_sriov(pdev);
12019 
12020 	/* Stop kthread signal shall trigger work_done one more time */
12021 	kthread_stop(phba->worker_thread);
12022 
12023 	/* Disable FW logging to host memory */
12024 	lpfc_ras_stop_fwlog(phba);
12025 
12026 	/* Unset the queues shared with the hardware then release all
12027 	 * allocated resources.
12028 	 */
12029 	lpfc_sli4_queue_unset(phba);
12030 	lpfc_sli4_queue_destroy(phba);
12031 
12032 	/* Reset SLI4 HBA FCoE function */
12033 	lpfc_pci_function_reset(phba);
12034 
12035 	/* Free RAS DMA memory */
12036 	if (phba->ras_fwlog.ras_enabled)
12037 		lpfc_sli4_ras_dma_free(phba);
12038 
12039 	/* Stop the SLI4 device port */
12040 	if (phba->pport)
12041 		phba->pport->work_port_events = 0;
12042 }
12043 
12044  /**
12045  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
12046  * @phba: Pointer to HBA context object.
12047  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
12048  *
12049  * This function is called in the SLI4 code path to read the port's
12050  * sli4 capabilities.
12051  *
12052  * This function may be be called from any context that can block-wait
12053  * for the completion.  The expectation is that this routine is called
12054  * typically from probe_one or from the online routine.
12055  **/
12056 int
12057 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
12058 {
12059 	int rc;
12060 	struct lpfc_mqe *mqe;
12061 	struct lpfc_pc_sli4_params *sli4_params;
12062 	uint32_t mbox_tmo;
12063 
12064 	rc = 0;
12065 	mqe = &mboxq->u.mqe;
12066 
12067 	/* Read the port's SLI4 Parameters port capabilities */
12068 	lpfc_pc_sli4_params(mboxq);
12069 	if (!phba->sli4_hba.intr_enable)
12070 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
12071 	else {
12072 		mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
12073 		rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
12074 	}
12075 
12076 	if (unlikely(rc))
12077 		return 1;
12078 
12079 	sli4_params = &phba->sli4_hba.pc_sli4_params;
12080 	sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
12081 	sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
12082 	sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
12083 	sli4_params->featurelevel_1 = bf_get(featurelevel_1,
12084 					     &mqe->un.sli4_params);
12085 	sli4_params->featurelevel_2 = bf_get(featurelevel_2,
12086 					     &mqe->un.sli4_params);
12087 	sli4_params->proto_types = mqe->un.sli4_params.word3;
12088 	sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
12089 	sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
12090 	sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
12091 	sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
12092 	sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
12093 	sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
12094 	sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
12095 	sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
12096 	sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
12097 	sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
12098 	sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
12099 	sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
12100 	sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
12101 	sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
12102 	sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
12103 	sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
12104 	sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
12105 	sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
12106 	sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
12107 	sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
12108 
12109 	/* Make sure that sge_supp_len can be handled by the driver */
12110 	if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
12111 		sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
12112 
12113 	return rc;
12114 }
12115 
12116 /**
12117  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
12118  * @phba: Pointer to HBA context object.
12119  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
12120  *
12121  * This function is called in the SLI4 code path to read the port's
12122  * sli4 capabilities.
12123  *
12124  * This function may be be called from any context that can block-wait
12125  * for the completion.  The expectation is that this routine is called
12126  * typically from probe_one or from the online routine.
12127  **/
12128 int
12129 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
12130 {
12131 	int rc;
12132 	struct lpfc_mqe *mqe = &mboxq->u.mqe;
12133 	struct lpfc_pc_sli4_params *sli4_params;
12134 	uint32_t mbox_tmo;
12135 	int length;
12136 	bool exp_wqcq_pages = true;
12137 	struct lpfc_sli4_parameters *mbx_sli4_parameters;
12138 
12139 	/*
12140 	 * By default, the driver assumes the SLI4 port requires RPI
12141 	 * header postings.  The SLI4_PARAM response will correct this
12142 	 * assumption.
12143 	 */
12144 	phba->sli4_hba.rpi_hdrs_in_use = 1;
12145 
12146 	/* Read the port's SLI4 Config Parameters */
12147 	length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
12148 		  sizeof(struct lpfc_sli4_cfg_mhdr));
12149 	lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
12150 			 LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
12151 			 length, LPFC_SLI4_MBX_EMBED);
12152 	if (!phba->sli4_hba.intr_enable)
12153 		rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
12154 	else {
12155 		mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
12156 		rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
12157 	}
12158 	if (unlikely(rc))
12159 		return rc;
12160 	sli4_params = &phba->sli4_hba.pc_sli4_params;
12161 	mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
12162 	sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
12163 	sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
12164 	sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
12165 	sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
12166 					     mbx_sli4_parameters);
12167 	sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
12168 					     mbx_sli4_parameters);
12169 	if (bf_get(cfg_phwq, mbx_sli4_parameters))
12170 		phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
12171 	else
12172 		phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
12173 	sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
12174 	sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters);
12175 	sli4_params->oas_supported = bf_get(cfg_oas, mbx_sli4_parameters);
12176 	sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
12177 	sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
12178 	sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
12179 	sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
12180 	sli4_params->eqav = bf_get(cfg_eqav, mbx_sli4_parameters);
12181 	sli4_params->cqav = bf_get(cfg_cqav, mbx_sli4_parameters);
12182 	sli4_params->wqsize = bf_get(cfg_wqsize, mbx_sli4_parameters);
12183 	sli4_params->bv1s = bf_get(cfg_bv1s, mbx_sli4_parameters);
12184 	sli4_params->pls = bf_get(cfg_pvl, mbx_sli4_parameters);
12185 	sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
12186 					    mbx_sli4_parameters);
12187 	sli4_params->wqpcnt = bf_get(cfg_wqpcnt, mbx_sli4_parameters);
12188 	sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
12189 					   mbx_sli4_parameters);
12190 	phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
12191 	phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
12192 
12193 	/* Check for Extended Pre-Registered SGL support */
12194 	phba->cfg_xpsgl = bf_get(cfg_xpsgl, mbx_sli4_parameters);
12195 
12196 	/* Check for firmware nvme support */
12197 	rc = (bf_get(cfg_nvme, mbx_sli4_parameters) &&
12198 		     bf_get(cfg_xib, mbx_sli4_parameters));
12199 
12200 	if (rc) {
12201 		/* Save this to indicate the Firmware supports NVME */
12202 		sli4_params->nvme = 1;
12203 
12204 		/* Firmware NVME support, check driver FC4 NVME support */
12205 		if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP) {
12206 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
12207 					"6133 Disabling NVME support: "
12208 					"FC4 type not supported: x%x\n",
12209 					phba->cfg_enable_fc4_type);
12210 			goto fcponly;
12211 		}
12212 	} else {
12213 		/* No firmware NVME support, check driver FC4 NVME support */
12214 		sli4_params->nvme = 0;
12215 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
12216 			lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_NVME,
12217 					"6101 Disabling NVME support: Not "
12218 					"supported by firmware (%d %d) x%x\n",
12219 					bf_get(cfg_nvme, mbx_sli4_parameters),
12220 					bf_get(cfg_xib, mbx_sli4_parameters),
12221 					phba->cfg_enable_fc4_type);
12222 fcponly:
12223 			phba->nvme_support = 0;
12224 			phba->nvmet_support = 0;
12225 			phba->cfg_nvmet_mrq = 0;
12226 			phba->cfg_nvme_seg_cnt = 0;
12227 
12228 			/* If no FC4 type support, move to just SCSI support */
12229 			if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
12230 				return -ENODEV;
12231 			phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
12232 		}
12233 	}
12234 
12235 	/* If the NVME FC4 type is enabled, scale the sg_seg_cnt to
12236 	 * accommodate 512K and 1M IOs in a single nvme buf.
12237 	 */
12238 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)
12239 		phba->cfg_sg_seg_cnt = LPFC_MAX_NVME_SEG_CNT;
12240 
12241 	/* Only embed PBDE for if_type 6, PBDE support requires xib be set */
12242 	if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
12243 	    LPFC_SLI_INTF_IF_TYPE_6) || (!bf_get(cfg_xib, mbx_sli4_parameters)))
12244 		phba->cfg_enable_pbde = 0;
12245 
12246 	/*
12247 	 * To support Suppress Response feature we must satisfy 3 conditions.
12248 	 * lpfc_suppress_rsp module parameter must be set (default).
12249 	 * In SLI4-Parameters Descriptor:
12250 	 * Extended Inline Buffers (XIB) must be supported.
12251 	 * Suppress Response IU Not Supported (SRIUNS) must NOT be supported
12252 	 * (double negative).
12253 	 */
12254 	if (phba->cfg_suppress_rsp && bf_get(cfg_xib, mbx_sli4_parameters) &&
12255 	    !(bf_get(cfg_nosr, mbx_sli4_parameters)))
12256 		phba->sli.sli_flag |= LPFC_SLI_SUPPRESS_RSP;
12257 	else
12258 		phba->cfg_suppress_rsp = 0;
12259 
12260 	if (bf_get(cfg_eqdr, mbx_sli4_parameters))
12261 		phba->sli.sli_flag |= LPFC_SLI_USE_EQDR;
12262 
12263 	/* Make sure that sge_supp_len can be handled by the driver */
12264 	if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
12265 		sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
12266 
12267 	/*
12268 	 * Check whether the adapter supports an embedded copy of the
12269 	 * FCP CMD IU within the WQE for FCP_Ixxx commands. In order
12270 	 * to use this option, 128-byte WQEs must be used.
12271 	 */
12272 	if (bf_get(cfg_ext_embed_cb, mbx_sli4_parameters))
12273 		phba->fcp_embed_io = 1;
12274 	else
12275 		phba->fcp_embed_io = 0;
12276 
12277 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT | LOG_NVME,
12278 			"6422 XIB %d PBDE %d: FCP %d NVME %d %d %d\n",
12279 			bf_get(cfg_xib, mbx_sli4_parameters),
12280 			phba->cfg_enable_pbde,
12281 			phba->fcp_embed_io, phba->nvme_support,
12282 			phba->cfg_nvme_embed_cmd, phba->cfg_suppress_rsp);
12283 
12284 	if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
12285 	    LPFC_SLI_INTF_IF_TYPE_2) &&
12286 	    (bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf) ==
12287 		 LPFC_SLI_INTF_FAMILY_LNCR_A0))
12288 		exp_wqcq_pages = false;
12289 
12290 	if ((bf_get(cfg_cqpsize, mbx_sli4_parameters) & LPFC_CQ_16K_PAGE_SZ) &&
12291 	    (bf_get(cfg_wqpsize, mbx_sli4_parameters) & LPFC_WQ_16K_PAGE_SZ) &&
12292 	    exp_wqcq_pages &&
12293 	    (sli4_params->wqsize & LPFC_WQ_SZ128_SUPPORT))
12294 		phba->enab_exp_wqcq_pages = 1;
12295 	else
12296 		phba->enab_exp_wqcq_pages = 0;
12297 	/*
12298 	 * Check if the SLI port supports MDS Diagnostics
12299 	 */
12300 	if (bf_get(cfg_mds_diags, mbx_sli4_parameters))
12301 		phba->mds_diags_support = 1;
12302 	else
12303 		phba->mds_diags_support = 0;
12304 
12305 	/*
12306 	 * Check if the SLI port supports NSLER
12307 	 */
12308 	if (bf_get(cfg_nsler, mbx_sli4_parameters))
12309 		phba->nsler = 1;
12310 	else
12311 		phba->nsler = 0;
12312 
12313 	return 0;
12314 }
12315 
12316 /**
12317  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
12318  * @pdev: pointer to PCI device
12319  * @pid: pointer to PCI device identifier
12320  *
12321  * This routine is to be called to attach a device with SLI-3 interface spec
12322  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
12323  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
12324  * information of the device and driver to see if the driver state that it can
12325  * support this kind of device. If the match is successful, the driver core
12326  * invokes this routine. If this routine determines it can claim the HBA, it
12327  * does all the initialization that it needs to do to handle the HBA properly.
12328  *
12329  * Return code
12330  * 	0 - driver can claim the device
12331  * 	negative value - driver can not claim the device
12332  **/
12333 static int
12334 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
12335 {
12336 	struct lpfc_hba   *phba;
12337 	struct lpfc_vport *vport = NULL;
12338 	struct Scsi_Host  *shost = NULL;
12339 	int error;
12340 	uint32_t cfg_mode, intr_mode;
12341 
12342 	/* Allocate memory for HBA structure */
12343 	phba = lpfc_hba_alloc(pdev);
12344 	if (!phba)
12345 		return -ENOMEM;
12346 
12347 	/* Perform generic PCI device enabling operation */
12348 	error = lpfc_enable_pci_dev(phba);
12349 	if (error)
12350 		goto out_free_phba;
12351 
12352 	/* Set up SLI API function jump table for PCI-device group-0 HBAs */
12353 	error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
12354 	if (error)
12355 		goto out_disable_pci_dev;
12356 
12357 	/* Set up SLI-3 specific device PCI memory space */
12358 	error = lpfc_sli_pci_mem_setup(phba);
12359 	if (error) {
12360 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12361 				"1402 Failed to set up pci memory space.\n");
12362 		goto out_disable_pci_dev;
12363 	}
12364 
12365 	/* Set up SLI-3 specific device driver resources */
12366 	error = lpfc_sli_driver_resource_setup(phba);
12367 	if (error) {
12368 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12369 				"1404 Failed to set up driver resource.\n");
12370 		goto out_unset_pci_mem_s3;
12371 	}
12372 
12373 	/* Initialize and populate the iocb list per host */
12374 
12375 	error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
12376 	if (error) {
12377 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12378 				"1405 Failed to initialize iocb list.\n");
12379 		goto out_unset_driver_resource_s3;
12380 	}
12381 
12382 	/* Set up common device driver resources */
12383 	error = lpfc_setup_driver_resource_phase2(phba);
12384 	if (error) {
12385 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12386 				"1406 Failed to set up driver resource.\n");
12387 		goto out_free_iocb_list;
12388 	}
12389 
12390 	/* Get the default values for Model Name and Description */
12391 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
12392 
12393 	/* Create SCSI host to the physical port */
12394 	error = lpfc_create_shost(phba);
12395 	if (error) {
12396 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12397 				"1407 Failed to create scsi host.\n");
12398 		goto out_unset_driver_resource;
12399 	}
12400 
12401 	/* Configure sysfs attributes */
12402 	vport = phba->pport;
12403 	error = lpfc_alloc_sysfs_attr(vport);
12404 	if (error) {
12405 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12406 				"1476 Failed to allocate sysfs attr\n");
12407 		goto out_destroy_shost;
12408 	}
12409 
12410 	shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
12411 	/* Now, trying to enable interrupt and bring up the device */
12412 	cfg_mode = phba->cfg_use_msi;
12413 	while (true) {
12414 		/* Put device to a known state before enabling interrupt */
12415 		lpfc_stop_port(phba);
12416 		/* Configure and enable interrupt */
12417 		intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
12418 		if (intr_mode == LPFC_INTR_ERROR) {
12419 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12420 					"0431 Failed to enable interrupt.\n");
12421 			error = -ENODEV;
12422 			goto out_free_sysfs_attr;
12423 		}
12424 		/* SLI-3 HBA setup */
12425 		if (lpfc_sli_hba_setup(phba)) {
12426 			lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12427 					"1477 Failed to set up hba\n");
12428 			error = -ENODEV;
12429 			goto out_remove_device;
12430 		}
12431 
12432 		/* Wait 50ms for the interrupts of previous mailbox commands */
12433 		msleep(50);
12434 		/* Check active interrupts on message signaled interrupts */
12435 		if (intr_mode == 0 ||
12436 		    phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
12437 			/* Log the current active interrupt mode */
12438 			phba->intr_mode = intr_mode;
12439 			lpfc_log_intr_mode(phba, intr_mode);
12440 			break;
12441 		} else {
12442 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12443 					"0447 Configure interrupt mode (%d) "
12444 					"failed active interrupt test.\n",
12445 					intr_mode);
12446 			/* Disable the current interrupt mode */
12447 			lpfc_sli_disable_intr(phba);
12448 			/* Try next level of interrupt mode */
12449 			cfg_mode = --intr_mode;
12450 		}
12451 	}
12452 
12453 	/* Perform post initialization setup */
12454 	lpfc_post_init_setup(phba);
12455 
12456 	/* Check if there are static vports to be created. */
12457 	lpfc_create_static_vport(phba);
12458 
12459 	return 0;
12460 
12461 out_remove_device:
12462 	lpfc_unset_hba(phba);
12463 out_free_sysfs_attr:
12464 	lpfc_free_sysfs_attr(vport);
12465 out_destroy_shost:
12466 	lpfc_destroy_shost(phba);
12467 out_unset_driver_resource:
12468 	lpfc_unset_driver_resource_phase2(phba);
12469 out_free_iocb_list:
12470 	lpfc_free_iocb_list(phba);
12471 out_unset_driver_resource_s3:
12472 	lpfc_sli_driver_resource_unset(phba);
12473 out_unset_pci_mem_s3:
12474 	lpfc_sli_pci_mem_unset(phba);
12475 out_disable_pci_dev:
12476 	lpfc_disable_pci_dev(phba);
12477 	if (shost)
12478 		scsi_host_put(shost);
12479 out_free_phba:
12480 	lpfc_hba_free(phba);
12481 	return error;
12482 }
12483 
12484 /**
12485  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
12486  * @pdev: pointer to PCI device
12487  *
12488  * This routine is to be called to disattach a device with SLI-3 interface
12489  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
12490  * removed from PCI bus, it performs all the necessary cleanup for the HBA
12491  * device to be removed from the PCI subsystem properly.
12492  **/
12493 static void
12494 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
12495 {
12496 	struct Scsi_Host  *shost = pci_get_drvdata(pdev);
12497 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
12498 	struct lpfc_vport **vports;
12499 	struct lpfc_hba   *phba = vport->phba;
12500 	int i;
12501 
12502 	spin_lock_irq(&phba->hbalock);
12503 	vport->load_flag |= FC_UNLOADING;
12504 	spin_unlock_irq(&phba->hbalock);
12505 
12506 	lpfc_free_sysfs_attr(vport);
12507 
12508 	/* Release all the vports against this physical port */
12509 	vports = lpfc_create_vport_work_array(phba);
12510 	if (vports != NULL)
12511 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
12512 			if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
12513 				continue;
12514 			fc_vport_terminate(vports[i]->fc_vport);
12515 		}
12516 	lpfc_destroy_vport_work_array(phba, vports);
12517 
12518 	/* Remove FC host and then SCSI host with the physical port */
12519 	fc_remove_host(shost);
12520 	scsi_remove_host(shost);
12521 
12522 	lpfc_cleanup(vport);
12523 
12524 	/*
12525 	 * Bring down the SLI Layer. This step disable all interrupts,
12526 	 * clears the rings, discards all mailbox commands, and resets
12527 	 * the HBA.
12528 	 */
12529 
12530 	/* HBA interrupt will be disabled after this call */
12531 	lpfc_sli_hba_down(phba);
12532 	/* Stop kthread signal shall trigger work_done one more time */
12533 	kthread_stop(phba->worker_thread);
12534 	/* Final cleanup of txcmplq and reset the HBA */
12535 	lpfc_sli_brdrestart(phba);
12536 
12537 	kfree(phba->vpi_bmask);
12538 	kfree(phba->vpi_ids);
12539 
12540 	lpfc_stop_hba_timers(phba);
12541 	spin_lock_irq(&phba->port_list_lock);
12542 	list_del_init(&vport->listentry);
12543 	spin_unlock_irq(&phba->port_list_lock);
12544 
12545 	lpfc_debugfs_terminate(vport);
12546 
12547 	/* Disable SR-IOV if enabled */
12548 	if (phba->cfg_sriov_nr_virtfn)
12549 		pci_disable_sriov(pdev);
12550 
12551 	/* Disable interrupt */
12552 	lpfc_sli_disable_intr(phba);
12553 
12554 	scsi_host_put(shost);
12555 
12556 	/*
12557 	 * Call scsi_free before mem_free since scsi bufs are released to their
12558 	 * corresponding pools here.
12559 	 */
12560 	lpfc_scsi_free(phba);
12561 	lpfc_free_iocb_list(phba);
12562 
12563 	lpfc_mem_free_all(phba);
12564 
12565 	dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
12566 			  phba->hbqslimp.virt, phba->hbqslimp.phys);
12567 
12568 	/* Free resources associated with SLI2 interface */
12569 	dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
12570 			  phba->slim2p.virt, phba->slim2p.phys);
12571 
12572 	/* unmap adapter SLIM and Control Registers */
12573 	iounmap(phba->ctrl_regs_memmap_p);
12574 	iounmap(phba->slim_memmap_p);
12575 
12576 	lpfc_hba_free(phba);
12577 
12578 	pci_release_mem_regions(pdev);
12579 	pci_disable_device(pdev);
12580 }
12581 
12582 /**
12583  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
12584  * @pdev: pointer to PCI device
12585  * @msg: power management message
12586  *
12587  * This routine is to be called from the kernel's PCI subsystem to support
12588  * system Power Management (PM) to device with SLI-3 interface spec. When
12589  * PM invokes this method, it quiesces the device by stopping the driver's
12590  * worker thread for the device, turning off device's interrupt and DMA,
12591  * and bring the device offline. Note that as the driver implements the
12592  * minimum PM requirements to a power-aware driver's PM support for the
12593  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
12594  * to the suspend() method call will be treated as SUSPEND and the driver will
12595  * fully reinitialize its device during resume() method call, the driver will
12596  * set device to PCI_D3hot state in PCI config space instead of setting it
12597  * according to the @msg provided by the PM.
12598  *
12599  * Return code
12600  * 	0 - driver suspended the device
12601  * 	Error otherwise
12602  **/
12603 static int
12604 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
12605 {
12606 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12607 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12608 
12609 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12610 			"0473 PCI device Power Management suspend.\n");
12611 
12612 	/* Bring down the device */
12613 	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
12614 	lpfc_offline(phba);
12615 	kthread_stop(phba->worker_thread);
12616 
12617 	/* Disable interrupt from device */
12618 	lpfc_sli_disable_intr(phba);
12619 
12620 	/* Save device state to PCI config space */
12621 	pci_save_state(pdev);
12622 	pci_set_power_state(pdev, PCI_D3hot);
12623 
12624 	return 0;
12625 }
12626 
12627 /**
12628  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
12629  * @pdev: pointer to PCI device
12630  *
12631  * This routine is to be called from the kernel's PCI subsystem to support
12632  * system Power Management (PM) to device with SLI-3 interface spec. When PM
12633  * invokes this method, it restores the device's PCI config space state and
12634  * fully reinitializes the device and brings it online. Note that as the
12635  * driver implements the minimum PM requirements to a power-aware driver's
12636  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
12637  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
12638  * driver will fully reinitialize its device during resume() method call,
12639  * the device will be set to PCI_D0 directly in PCI config space before
12640  * restoring the state.
12641  *
12642  * Return code
12643  * 	0 - driver suspended the device
12644  * 	Error otherwise
12645  **/
12646 static int
12647 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
12648 {
12649 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12650 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12651 	uint32_t intr_mode;
12652 	int error;
12653 
12654 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
12655 			"0452 PCI device Power Management resume.\n");
12656 
12657 	/* Restore device state from PCI config space */
12658 	pci_set_power_state(pdev, PCI_D0);
12659 	pci_restore_state(pdev);
12660 
12661 	/*
12662 	 * As the new kernel behavior of pci_restore_state() API call clears
12663 	 * device saved_state flag, need to save the restored state again.
12664 	 */
12665 	pci_save_state(pdev);
12666 
12667 	if (pdev->is_busmaster)
12668 		pci_set_master(pdev);
12669 
12670 	/* Startup the kernel thread for this host adapter. */
12671 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
12672 					"lpfc_worker_%d", phba->brd_no);
12673 	if (IS_ERR(phba->worker_thread)) {
12674 		error = PTR_ERR(phba->worker_thread);
12675 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
12676 				"0434 PM resume failed to start worker "
12677 				"thread: error=x%x.\n", error);
12678 		return error;
12679 	}
12680 
12681 	/* Configure and enable interrupt */
12682 	intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
12683 	if (intr_mode == LPFC_INTR_ERROR) {
12684 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12685 				"0430 PM resume Failed to enable interrupt\n");
12686 		return -EIO;
12687 	} else
12688 		phba->intr_mode = intr_mode;
12689 
12690 	/* Restart HBA and bring it online */
12691 	lpfc_sli_brdrestart(phba);
12692 	lpfc_online(phba);
12693 
12694 	/* Log the current active interrupt mode */
12695 	lpfc_log_intr_mode(phba, phba->intr_mode);
12696 
12697 	return 0;
12698 }
12699 
12700 /**
12701  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
12702  * @phba: pointer to lpfc hba data structure.
12703  *
12704  * This routine is called to prepare the SLI3 device for PCI slot recover. It
12705  * aborts all the outstanding SCSI I/Os to the pci device.
12706  **/
12707 static void
12708 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
12709 {
12710 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12711 			"2723 PCI channel I/O abort preparing for recovery\n");
12712 
12713 	/*
12714 	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq
12715 	 * and let the SCSI mid-layer to retry them to recover.
12716 	 */
12717 	lpfc_sli_abort_fcp_rings(phba);
12718 }
12719 
12720 /**
12721  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
12722  * @phba: pointer to lpfc hba data structure.
12723  *
12724  * This routine is called to prepare the SLI3 device for PCI slot reset. It
12725  * disables the device interrupt and pci device, and aborts the internal FCP
12726  * pending I/Os.
12727  **/
12728 static void
12729 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
12730 {
12731 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12732 			"2710 PCI channel disable preparing for reset\n");
12733 
12734 	/* Block any management I/Os to the device */
12735 	lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
12736 
12737 	/* Block all SCSI devices' I/Os on the host */
12738 	lpfc_scsi_dev_block(phba);
12739 
12740 	/* Flush all driver's outstanding SCSI I/Os as we are to reset */
12741 	lpfc_sli_flush_io_rings(phba);
12742 
12743 	/* stop all timers */
12744 	lpfc_stop_hba_timers(phba);
12745 
12746 	/* Disable interrupt and pci device */
12747 	lpfc_sli_disable_intr(phba);
12748 	pci_disable_device(phba->pcidev);
12749 }
12750 
12751 /**
12752  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
12753  * @phba: pointer to lpfc hba data structure.
12754  *
12755  * This routine is called to prepare the SLI3 device for PCI slot permanently
12756  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
12757  * pending I/Os.
12758  **/
12759 static void
12760 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
12761 {
12762 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12763 			"2711 PCI channel permanent disable for failure\n");
12764 	/* Block all SCSI devices' I/Os on the host */
12765 	lpfc_scsi_dev_block(phba);
12766 
12767 	/* stop all timers */
12768 	lpfc_stop_hba_timers(phba);
12769 
12770 	/* Clean up all driver's outstanding SCSI I/Os */
12771 	lpfc_sli_flush_io_rings(phba);
12772 }
12773 
12774 /**
12775  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
12776  * @pdev: pointer to PCI device.
12777  * @state: the current PCI connection state.
12778  *
12779  * This routine is called from the PCI subsystem for I/O error handling to
12780  * device with SLI-3 interface spec. This function is called by the PCI
12781  * subsystem after a PCI bus error affecting this device has been detected.
12782  * When this function is invoked, it will need to stop all the I/Os and
12783  * interrupt(s) to the device. Once that is done, it will return
12784  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
12785  * as desired.
12786  *
12787  * Return codes
12788  * 	PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
12789  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
12790  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12791  **/
12792 static pci_ers_result_t
12793 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
12794 {
12795 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12796 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12797 
12798 	switch (state) {
12799 	case pci_channel_io_normal:
12800 		/* Non-fatal error, prepare for recovery */
12801 		lpfc_sli_prep_dev_for_recover(phba);
12802 		return PCI_ERS_RESULT_CAN_RECOVER;
12803 	case pci_channel_io_frozen:
12804 		/* Fatal error, prepare for slot reset */
12805 		lpfc_sli_prep_dev_for_reset(phba);
12806 		return PCI_ERS_RESULT_NEED_RESET;
12807 	case pci_channel_io_perm_failure:
12808 		/* Permanent failure, prepare for device down */
12809 		lpfc_sli_prep_dev_for_perm_failure(phba);
12810 		return PCI_ERS_RESULT_DISCONNECT;
12811 	default:
12812 		/* Unknown state, prepare and request slot reset */
12813 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12814 				"0472 Unknown PCI error state: x%x\n", state);
12815 		lpfc_sli_prep_dev_for_reset(phba);
12816 		return PCI_ERS_RESULT_NEED_RESET;
12817 	}
12818 }
12819 
12820 /**
12821  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
12822  * @pdev: pointer to PCI device.
12823  *
12824  * This routine is called from the PCI subsystem for error handling to
12825  * device with SLI-3 interface spec. This is called after PCI bus has been
12826  * reset to restart the PCI card from scratch, as if from a cold-boot.
12827  * During the PCI subsystem error recovery, after driver returns
12828  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
12829  * recovery and then call this routine before calling the .resume method
12830  * to recover the device. This function will initialize the HBA device,
12831  * enable the interrupt, but it will just put the HBA to offline state
12832  * without passing any I/O traffic.
12833  *
12834  * Return codes
12835  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
12836  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
12837  */
12838 static pci_ers_result_t
12839 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
12840 {
12841 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12842 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12843 	struct lpfc_sli *psli = &phba->sli;
12844 	uint32_t intr_mode;
12845 
12846 	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
12847 	if (pci_enable_device_mem(pdev)) {
12848 		printk(KERN_ERR "lpfc: Cannot re-enable "
12849 			"PCI device after reset.\n");
12850 		return PCI_ERS_RESULT_DISCONNECT;
12851 	}
12852 
12853 	pci_restore_state(pdev);
12854 
12855 	/*
12856 	 * As the new kernel behavior of pci_restore_state() API call clears
12857 	 * device saved_state flag, need to save the restored state again.
12858 	 */
12859 	pci_save_state(pdev);
12860 
12861 	if (pdev->is_busmaster)
12862 		pci_set_master(pdev);
12863 
12864 	spin_lock_irq(&phba->hbalock);
12865 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
12866 	spin_unlock_irq(&phba->hbalock);
12867 
12868 	/* Configure and enable interrupt */
12869 	intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
12870 	if (intr_mode == LPFC_INTR_ERROR) {
12871 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12872 				"0427 Cannot re-enable interrupt after "
12873 				"slot reset.\n");
12874 		return PCI_ERS_RESULT_DISCONNECT;
12875 	} else
12876 		phba->intr_mode = intr_mode;
12877 
12878 	/* Take device offline, it will perform cleanup */
12879 	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
12880 	lpfc_offline(phba);
12881 	lpfc_sli_brdrestart(phba);
12882 
12883 	/* Log the current active interrupt mode */
12884 	lpfc_log_intr_mode(phba, phba->intr_mode);
12885 
12886 	return PCI_ERS_RESULT_RECOVERED;
12887 }
12888 
12889 /**
12890  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
12891  * @pdev: pointer to PCI device
12892  *
12893  * This routine is called from the PCI subsystem for error handling to device
12894  * with SLI-3 interface spec. It is called when kernel error recovery tells
12895  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
12896  * error recovery. After this call, traffic can start to flow from this device
12897  * again.
12898  */
12899 static void
12900 lpfc_io_resume_s3(struct pci_dev *pdev)
12901 {
12902 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
12903 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
12904 
12905 	/* Bring device online, it will be no-op for non-fatal error resume */
12906 	lpfc_online(phba);
12907 }
12908 
12909 /**
12910  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
12911  * @phba: pointer to lpfc hba data structure.
12912  *
12913  * returns the number of ELS/CT IOCBs to reserve
12914  **/
12915 int
12916 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
12917 {
12918 	int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
12919 
12920 	if (phba->sli_rev == LPFC_SLI_REV4) {
12921 		if (max_xri <= 100)
12922 			return 10;
12923 		else if (max_xri <= 256)
12924 			return 25;
12925 		else if (max_xri <= 512)
12926 			return 50;
12927 		else if (max_xri <= 1024)
12928 			return 100;
12929 		else if (max_xri <= 1536)
12930 			return 150;
12931 		else if (max_xri <= 2048)
12932 			return 200;
12933 		else
12934 			return 250;
12935 	} else
12936 		return 0;
12937 }
12938 
12939 /**
12940  * lpfc_sli4_get_iocb_cnt - Calculate the # of total IOCBs to reserve
12941  * @phba: pointer to lpfc hba data structure.
12942  *
12943  * returns the number of ELS/CT + NVMET IOCBs to reserve
12944  **/
12945 int
12946 lpfc_sli4_get_iocb_cnt(struct lpfc_hba *phba)
12947 {
12948 	int max_xri = lpfc_sli4_get_els_iocb_cnt(phba);
12949 
12950 	if (phba->nvmet_support)
12951 		max_xri += LPFC_NVMET_BUF_POST;
12952 	return max_xri;
12953 }
12954 
12955 
12956 static int
12957 lpfc_log_write_firmware_error(struct lpfc_hba *phba, uint32_t offset,
12958 	uint32_t magic_number, uint32_t ftype, uint32_t fid, uint32_t fsize,
12959 	const struct firmware *fw)
12960 {
12961 	int rc;
12962 
12963 	/* Three cases:  (1) FW was not supported on the detected adapter.
12964 	 * (2) FW update has been locked out administratively.
12965 	 * (3) Some other error during FW update.
12966 	 * In each case, an unmaskable message is written to the console
12967 	 * for admin diagnosis.
12968 	 */
12969 	if (offset == ADD_STATUS_FW_NOT_SUPPORTED ||
12970 	    (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC &&
12971 	     magic_number != MAGIC_NUMBER_G6) ||
12972 	    (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G7_FC &&
12973 	     magic_number != MAGIC_NUMBER_G7)) {
12974 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12975 				"3030 This firmware version is not supported on"
12976 				" this HBA model. Device:%x Magic:%x Type:%x "
12977 				"ID:%x Size %d %zd\n",
12978 				phba->pcidev->device, magic_number, ftype, fid,
12979 				fsize, fw->size);
12980 		rc = -EINVAL;
12981 	} else if (offset == ADD_STATUS_FW_DOWNLOAD_HW_DISABLED) {
12982 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12983 				"3021 Firmware downloads have been prohibited "
12984 				"by a system configuration setting on "
12985 				"Device:%x Magic:%x Type:%x ID:%x Size %d "
12986 				"%zd\n",
12987 				phba->pcidev->device, magic_number, ftype, fid,
12988 				fsize, fw->size);
12989 		rc = -EACCES;
12990 	} else {
12991 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
12992 				"3022 FW Download failed. Add Status x%x "
12993 				"Device:%x Magic:%x Type:%x ID:%x Size %d "
12994 				"%zd\n",
12995 				offset, phba->pcidev->device, magic_number,
12996 				ftype, fid, fsize, fw->size);
12997 		rc = -EIO;
12998 	}
12999 	return rc;
13000 }
13001 
13002 /**
13003  * lpfc_write_firmware - attempt to write a firmware image to the port
13004  * @fw: pointer to firmware image returned from request_firmware.
13005  * @context: pointer to firmware image returned from request_firmware.
13006  *
13007  **/
13008 static void
13009 lpfc_write_firmware(const struct firmware *fw, void *context)
13010 {
13011 	struct lpfc_hba *phba = (struct lpfc_hba *)context;
13012 	char fwrev[FW_REV_STR_SIZE];
13013 	struct lpfc_grp_hdr *image;
13014 	struct list_head dma_buffer_list;
13015 	int i, rc = 0;
13016 	struct lpfc_dmabuf *dmabuf, *next;
13017 	uint32_t offset = 0, temp_offset = 0;
13018 	uint32_t magic_number, ftype, fid, fsize;
13019 
13020 	/* It can be null in no-wait mode, sanity check */
13021 	if (!fw) {
13022 		rc = -ENXIO;
13023 		goto out;
13024 	}
13025 	image = (struct lpfc_grp_hdr *)fw->data;
13026 
13027 	magic_number = be32_to_cpu(image->magic_number);
13028 	ftype = bf_get_be32(lpfc_grp_hdr_file_type, image);
13029 	fid = bf_get_be32(lpfc_grp_hdr_id, image);
13030 	fsize = be32_to_cpu(image->size);
13031 
13032 	INIT_LIST_HEAD(&dma_buffer_list);
13033 	lpfc_decode_firmware_rev(phba, fwrev, 1);
13034 	if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
13035 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13036 				"3023 Updating Firmware, Current Version:%s "
13037 				"New Version:%s\n",
13038 				fwrev, image->revision);
13039 		for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
13040 			dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
13041 					 GFP_KERNEL);
13042 			if (!dmabuf) {
13043 				rc = -ENOMEM;
13044 				goto release_out;
13045 			}
13046 			dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
13047 							  SLI4_PAGE_SIZE,
13048 							  &dmabuf->phys,
13049 							  GFP_KERNEL);
13050 			if (!dmabuf->virt) {
13051 				kfree(dmabuf);
13052 				rc = -ENOMEM;
13053 				goto release_out;
13054 			}
13055 			list_add_tail(&dmabuf->list, &dma_buffer_list);
13056 		}
13057 		while (offset < fw->size) {
13058 			temp_offset = offset;
13059 			list_for_each_entry(dmabuf, &dma_buffer_list, list) {
13060 				if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
13061 					memcpy(dmabuf->virt,
13062 					       fw->data + temp_offset,
13063 					       fw->size - temp_offset);
13064 					temp_offset = fw->size;
13065 					break;
13066 				}
13067 				memcpy(dmabuf->virt, fw->data + temp_offset,
13068 				       SLI4_PAGE_SIZE);
13069 				temp_offset += SLI4_PAGE_SIZE;
13070 			}
13071 			rc = lpfc_wr_object(phba, &dma_buffer_list,
13072 				    (fw->size - offset), &offset);
13073 			if (rc) {
13074 				rc = lpfc_log_write_firmware_error(phba, offset,
13075 								   magic_number,
13076 								   ftype,
13077 								   fid,
13078 								   fsize,
13079 								   fw);
13080 				goto release_out;
13081 			}
13082 		}
13083 		rc = offset;
13084 	} else
13085 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13086 				"3029 Skipped Firmware update, Current "
13087 				"Version:%s New Version:%s\n",
13088 				fwrev, image->revision);
13089 
13090 release_out:
13091 	list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
13092 		list_del(&dmabuf->list);
13093 		dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
13094 				  dmabuf->virt, dmabuf->phys);
13095 		kfree(dmabuf);
13096 	}
13097 	release_firmware(fw);
13098 out:
13099 	if (rc < 0)
13100 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13101 				"3062 Firmware update error, status %d.\n", rc);
13102 	else
13103 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13104 				"3024 Firmware update success: size %d.\n", rc);
13105 }
13106 
13107 /**
13108  * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade
13109  * @phba: pointer to lpfc hba data structure.
13110  * @fw_upgrade: which firmware to update.
13111  *
13112  * This routine is called to perform Linux generic firmware upgrade on device
13113  * that supports such feature.
13114  **/
13115 int
13116 lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
13117 {
13118 	uint8_t file_name[ELX_MODEL_NAME_SIZE];
13119 	int ret;
13120 	const struct firmware *fw;
13121 
13122 	/* Only supported on SLI4 interface type 2 for now */
13123 	if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
13124 	    LPFC_SLI_INTF_IF_TYPE_2)
13125 		return -EPERM;
13126 
13127 	snprintf(file_name, ELX_MODEL_NAME_SIZE, "%s.grp", phba->ModelName);
13128 
13129 	if (fw_upgrade == INT_FW_UPGRADE) {
13130 		ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG,
13131 					file_name, &phba->pcidev->dev,
13132 					GFP_KERNEL, (void *)phba,
13133 					lpfc_write_firmware);
13134 	} else if (fw_upgrade == RUN_FW_UPGRADE) {
13135 		ret = request_firmware(&fw, file_name, &phba->pcidev->dev);
13136 		if (!ret)
13137 			lpfc_write_firmware(fw, (void *)phba);
13138 	} else {
13139 		ret = -EINVAL;
13140 	}
13141 
13142 	return ret;
13143 }
13144 
13145 /**
13146  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
13147  * @pdev: pointer to PCI device
13148  * @pid: pointer to PCI device identifier
13149  *
13150  * This routine is called from the kernel's PCI subsystem to device with
13151  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
13152  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
13153  * information of the device and driver to see if the driver state that it
13154  * can support this kind of device. If the match is successful, the driver
13155  * core invokes this routine. If this routine determines it can claim the HBA,
13156  * it does all the initialization that it needs to do to handle the HBA
13157  * properly.
13158  *
13159  * Return code
13160  * 	0 - driver can claim the device
13161  * 	negative value - driver can not claim the device
13162  **/
13163 static int
13164 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
13165 {
13166 	struct lpfc_hba   *phba;
13167 	struct lpfc_vport *vport = NULL;
13168 	struct Scsi_Host  *shost = NULL;
13169 	int error;
13170 	uint32_t cfg_mode, intr_mode;
13171 
13172 	/* Allocate memory for HBA structure */
13173 	phba = lpfc_hba_alloc(pdev);
13174 	if (!phba)
13175 		return -ENOMEM;
13176 
13177 	/* Perform generic PCI device enabling operation */
13178 	error = lpfc_enable_pci_dev(phba);
13179 	if (error)
13180 		goto out_free_phba;
13181 
13182 	/* Set up SLI API function jump table for PCI-device group-1 HBAs */
13183 	error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
13184 	if (error)
13185 		goto out_disable_pci_dev;
13186 
13187 	/* Set up SLI-4 specific device PCI memory space */
13188 	error = lpfc_sli4_pci_mem_setup(phba);
13189 	if (error) {
13190 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13191 				"1410 Failed to set up pci memory space.\n");
13192 		goto out_disable_pci_dev;
13193 	}
13194 
13195 	/* Set up SLI-4 Specific device driver resources */
13196 	error = lpfc_sli4_driver_resource_setup(phba);
13197 	if (error) {
13198 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13199 				"1412 Failed to set up driver resource.\n");
13200 		goto out_unset_pci_mem_s4;
13201 	}
13202 
13203 	INIT_LIST_HEAD(&phba->active_rrq_list);
13204 	INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
13205 
13206 	/* Set up common device driver resources */
13207 	error = lpfc_setup_driver_resource_phase2(phba);
13208 	if (error) {
13209 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13210 				"1414 Failed to set up driver resource.\n");
13211 		goto out_unset_driver_resource_s4;
13212 	}
13213 
13214 	/* Get the default values for Model Name and Description */
13215 	lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
13216 
13217 	/* Now, trying to enable interrupt and bring up the device */
13218 	cfg_mode = phba->cfg_use_msi;
13219 
13220 	/* Put device to a known state before enabling interrupt */
13221 	phba->pport = NULL;
13222 	lpfc_stop_port(phba);
13223 
13224 	/* Init cpu_map array */
13225 	lpfc_cpu_map_array_init(phba);
13226 
13227 	/* Init hba_eq_hdl array */
13228 	lpfc_hba_eq_hdl_array_init(phba);
13229 
13230 	/* Configure and enable interrupt */
13231 	intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
13232 	if (intr_mode == LPFC_INTR_ERROR) {
13233 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13234 				"0426 Failed to enable interrupt.\n");
13235 		error = -ENODEV;
13236 		goto out_unset_driver_resource;
13237 	}
13238 	/* Default to single EQ for non-MSI-X */
13239 	if (phba->intr_type != MSIX) {
13240 		phba->cfg_irq_chann = 1;
13241 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13242 			if (phba->nvmet_support)
13243 				phba->cfg_nvmet_mrq = 1;
13244 		}
13245 	}
13246 	lpfc_cpu_affinity_check(phba, phba->cfg_irq_chann);
13247 
13248 	/* Create SCSI host to the physical port */
13249 	error = lpfc_create_shost(phba);
13250 	if (error) {
13251 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13252 				"1415 Failed to create scsi host.\n");
13253 		goto out_disable_intr;
13254 	}
13255 	vport = phba->pport;
13256 	shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
13257 
13258 	/* Configure sysfs attributes */
13259 	error = lpfc_alloc_sysfs_attr(vport);
13260 	if (error) {
13261 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13262 				"1416 Failed to allocate sysfs attr\n");
13263 		goto out_destroy_shost;
13264 	}
13265 
13266 	/* Set up SLI-4 HBA */
13267 	if (lpfc_sli4_hba_setup(phba)) {
13268 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13269 				"1421 Failed to set up hba\n");
13270 		error = -ENODEV;
13271 		goto out_free_sysfs_attr;
13272 	}
13273 
13274 	/* Log the current active interrupt mode */
13275 	phba->intr_mode = intr_mode;
13276 	lpfc_log_intr_mode(phba, intr_mode);
13277 
13278 	/* Perform post initialization setup */
13279 	lpfc_post_init_setup(phba);
13280 
13281 	/* NVME support in FW earlier in the driver load corrects the
13282 	 * FC4 type making a check for nvme_support unnecessary.
13283 	 */
13284 	if (phba->nvmet_support == 0) {
13285 		if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME) {
13286 			/* Create NVME binding with nvme_fc_transport. This
13287 			 * ensures the vport is initialized.  If the localport
13288 			 * create fails, it should not unload the driver to
13289 			 * support field issues.
13290 			 */
13291 			error = lpfc_nvme_create_localport(vport);
13292 			if (error) {
13293 				lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13294 						"6004 NVME registration "
13295 						"failed, error x%x\n",
13296 						error);
13297 			}
13298 		}
13299 	}
13300 
13301 	/* check for firmware upgrade or downgrade */
13302 	if (phba->cfg_request_firmware_upgrade)
13303 		lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
13304 
13305 	/* Check if there are static vports to be created. */
13306 	lpfc_create_static_vport(phba);
13307 
13308 	/* Enable RAS FW log support */
13309 	lpfc_sli4_ras_setup(phba);
13310 
13311 	INIT_LIST_HEAD(&phba->poll_list);
13312 	timer_setup(&phba->cpuhp_poll_timer, lpfc_sli4_poll_hbtimer, 0);
13313 	cpuhp_state_add_instance_nocalls(lpfc_cpuhp_state, &phba->cpuhp);
13314 
13315 	return 0;
13316 
13317 out_free_sysfs_attr:
13318 	lpfc_free_sysfs_attr(vport);
13319 out_destroy_shost:
13320 	lpfc_destroy_shost(phba);
13321 out_disable_intr:
13322 	lpfc_sli4_disable_intr(phba);
13323 out_unset_driver_resource:
13324 	lpfc_unset_driver_resource_phase2(phba);
13325 out_unset_driver_resource_s4:
13326 	lpfc_sli4_driver_resource_unset(phba);
13327 out_unset_pci_mem_s4:
13328 	lpfc_sli4_pci_mem_unset(phba);
13329 out_disable_pci_dev:
13330 	lpfc_disable_pci_dev(phba);
13331 	if (shost)
13332 		scsi_host_put(shost);
13333 out_free_phba:
13334 	lpfc_hba_free(phba);
13335 	return error;
13336 }
13337 
13338 /**
13339  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
13340  * @pdev: pointer to PCI device
13341  *
13342  * This routine is called from the kernel's PCI subsystem to device with
13343  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
13344  * removed from PCI bus, it performs all the necessary cleanup for the HBA
13345  * device to be removed from the PCI subsystem properly.
13346  **/
13347 static void
13348 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
13349 {
13350 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13351 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
13352 	struct lpfc_vport **vports;
13353 	struct lpfc_hba *phba = vport->phba;
13354 	int i;
13355 
13356 	/* Mark the device unloading flag */
13357 	spin_lock_irq(&phba->hbalock);
13358 	vport->load_flag |= FC_UNLOADING;
13359 	spin_unlock_irq(&phba->hbalock);
13360 
13361 	/* Free the HBA sysfs attributes */
13362 	lpfc_free_sysfs_attr(vport);
13363 
13364 	/* Release all the vports against this physical port */
13365 	vports = lpfc_create_vport_work_array(phba);
13366 	if (vports != NULL)
13367 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
13368 			if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
13369 				continue;
13370 			fc_vport_terminate(vports[i]->fc_vport);
13371 		}
13372 	lpfc_destroy_vport_work_array(phba, vports);
13373 
13374 	/* Remove FC host and then SCSI host with the physical port */
13375 	fc_remove_host(shost);
13376 	scsi_remove_host(shost);
13377 
13378 	/* Perform ndlp cleanup on the physical port.  The nvme and nvmet
13379 	 * localports are destroyed after to cleanup all transport memory.
13380 	 */
13381 	lpfc_cleanup(vport);
13382 	lpfc_nvmet_destroy_targetport(phba);
13383 	lpfc_nvme_destroy_localport(vport);
13384 
13385 	/* De-allocate multi-XRI pools */
13386 	if (phba->cfg_xri_rebalancing)
13387 		lpfc_destroy_multixri_pools(phba);
13388 
13389 	/*
13390 	 * Bring down the SLI Layer. This step disables all interrupts,
13391 	 * clears the rings, discards all mailbox commands, and resets
13392 	 * the HBA FCoE function.
13393 	 */
13394 	lpfc_debugfs_terminate(vport);
13395 
13396 	lpfc_stop_hba_timers(phba);
13397 	spin_lock_irq(&phba->port_list_lock);
13398 	list_del_init(&vport->listentry);
13399 	spin_unlock_irq(&phba->port_list_lock);
13400 
13401 	/* Perform scsi free before driver resource_unset since scsi
13402 	 * buffers are released to their corresponding pools here.
13403 	 */
13404 	lpfc_io_free(phba);
13405 	lpfc_free_iocb_list(phba);
13406 	lpfc_sli4_hba_unset(phba);
13407 
13408 	lpfc_unset_driver_resource_phase2(phba);
13409 	lpfc_sli4_driver_resource_unset(phba);
13410 
13411 	/* Unmap adapter Control and Doorbell registers */
13412 	lpfc_sli4_pci_mem_unset(phba);
13413 
13414 	/* Release PCI resources and disable device's PCI function */
13415 	scsi_host_put(shost);
13416 	lpfc_disable_pci_dev(phba);
13417 
13418 	/* Finally, free the driver's device data structure */
13419 	lpfc_hba_free(phba);
13420 
13421 	return;
13422 }
13423 
13424 /**
13425  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
13426  * @pdev: pointer to PCI device
13427  * @msg: power management message
13428  *
13429  * This routine is called from the kernel's PCI subsystem to support system
13430  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
13431  * this method, it quiesces the device by stopping the driver's worker
13432  * thread for the device, turning off device's interrupt and DMA, and bring
13433  * the device offline. Note that as the driver implements the minimum PM
13434  * requirements to a power-aware driver's PM support for suspend/resume -- all
13435  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
13436  * method call will be treated as SUSPEND and the driver will fully
13437  * reinitialize its device during resume() method call, the driver will set
13438  * device to PCI_D3hot state in PCI config space instead of setting it
13439  * according to the @msg provided by the PM.
13440  *
13441  * Return code
13442  * 	0 - driver suspended the device
13443  * 	Error otherwise
13444  **/
13445 static int
13446 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
13447 {
13448 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13449 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13450 
13451 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13452 			"2843 PCI device Power Management suspend.\n");
13453 
13454 	/* Bring down the device */
13455 	lpfc_offline_prep(phba, LPFC_MBX_WAIT);
13456 	lpfc_offline(phba);
13457 	kthread_stop(phba->worker_thread);
13458 
13459 	/* Disable interrupt from device */
13460 	lpfc_sli4_disable_intr(phba);
13461 	lpfc_sli4_queue_destroy(phba);
13462 
13463 	/* Save device state to PCI config space */
13464 	pci_save_state(pdev);
13465 	pci_set_power_state(pdev, PCI_D3hot);
13466 
13467 	return 0;
13468 }
13469 
13470 /**
13471  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
13472  * @pdev: pointer to PCI device
13473  *
13474  * This routine is called from the kernel's PCI subsystem to support system
13475  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
13476  * this method, it restores the device's PCI config space state and fully
13477  * reinitializes the device and brings it online. Note that as the driver
13478  * implements the minimum PM requirements to a power-aware driver's PM for
13479  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
13480  * to the suspend() method call will be treated as SUSPEND and the driver
13481  * will fully reinitialize its device during resume() method call, the device
13482  * will be set to PCI_D0 directly in PCI config space before restoring the
13483  * state.
13484  *
13485  * Return code
13486  * 	0 - driver suspended the device
13487  * 	Error otherwise
13488  **/
13489 static int
13490 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
13491 {
13492 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13493 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13494 	uint32_t intr_mode;
13495 	int error;
13496 
13497 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
13498 			"0292 PCI device Power Management resume.\n");
13499 
13500 	/* Restore device state from PCI config space */
13501 	pci_set_power_state(pdev, PCI_D0);
13502 	pci_restore_state(pdev);
13503 
13504 	/*
13505 	 * As the new kernel behavior of pci_restore_state() API call clears
13506 	 * device saved_state flag, need to save the restored state again.
13507 	 */
13508 	pci_save_state(pdev);
13509 
13510 	if (pdev->is_busmaster)
13511 		pci_set_master(pdev);
13512 
13513 	 /* Startup the kernel thread for this host adapter. */
13514 	phba->worker_thread = kthread_run(lpfc_do_work, phba,
13515 					"lpfc_worker_%d", phba->brd_no);
13516 	if (IS_ERR(phba->worker_thread)) {
13517 		error = PTR_ERR(phba->worker_thread);
13518 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
13519 				"0293 PM resume failed to start worker "
13520 				"thread: error=x%x.\n", error);
13521 		return error;
13522 	}
13523 
13524 	/* Configure and enable interrupt */
13525 	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
13526 	if (intr_mode == LPFC_INTR_ERROR) {
13527 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13528 				"0294 PM resume Failed to enable interrupt\n");
13529 		return -EIO;
13530 	} else
13531 		phba->intr_mode = intr_mode;
13532 
13533 	/* Restart HBA and bring it online */
13534 	lpfc_sli_brdrestart(phba);
13535 	lpfc_online(phba);
13536 
13537 	/* Log the current active interrupt mode */
13538 	lpfc_log_intr_mode(phba, phba->intr_mode);
13539 
13540 	return 0;
13541 }
13542 
13543 /**
13544  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
13545  * @phba: pointer to lpfc hba data structure.
13546  *
13547  * This routine is called to prepare the SLI4 device for PCI slot recover. It
13548  * aborts all the outstanding SCSI I/Os to the pci device.
13549  **/
13550 static void
13551 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
13552 {
13553 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13554 			"2828 PCI channel I/O abort preparing for recovery\n");
13555 	/*
13556 	 * There may be errored I/Os through HBA, abort all I/Os on txcmplq
13557 	 * and let the SCSI mid-layer to retry them to recover.
13558 	 */
13559 	lpfc_sli_abort_fcp_rings(phba);
13560 }
13561 
13562 /**
13563  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
13564  * @phba: pointer to lpfc hba data structure.
13565  *
13566  * This routine is called to prepare the SLI4 device for PCI slot reset. It
13567  * disables the device interrupt and pci device, and aborts the internal FCP
13568  * pending I/Os.
13569  **/
13570 static void
13571 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
13572 {
13573 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13574 			"2826 PCI channel disable preparing for reset\n");
13575 
13576 	/* Block any management I/Os to the device */
13577 	lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
13578 
13579 	/* Block all SCSI devices' I/Os on the host */
13580 	lpfc_scsi_dev_block(phba);
13581 
13582 	/* Flush all driver's outstanding I/Os as we are to reset */
13583 	lpfc_sli_flush_io_rings(phba);
13584 
13585 	/* stop all timers */
13586 	lpfc_stop_hba_timers(phba);
13587 
13588 	/* Disable interrupt and pci device */
13589 	lpfc_sli4_disable_intr(phba);
13590 	lpfc_sli4_queue_destroy(phba);
13591 	pci_disable_device(phba->pcidev);
13592 }
13593 
13594 /**
13595  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
13596  * @phba: pointer to lpfc hba data structure.
13597  *
13598  * This routine is called to prepare the SLI4 device for PCI slot permanently
13599  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
13600  * pending I/Os.
13601  **/
13602 static void
13603 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
13604 {
13605 	lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13606 			"2827 PCI channel permanent disable for failure\n");
13607 
13608 	/* Block all SCSI devices' I/Os on the host */
13609 	lpfc_scsi_dev_block(phba);
13610 
13611 	/* stop all timers */
13612 	lpfc_stop_hba_timers(phba);
13613 
13614 	/* Clean up all driver's outstanding I/Os */
13615 	lpfc_sli_flush_io_rings(phba);
13616 }
13617 
13618 /**
13619  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
13620  * @pdev: pointer to PCI device.
13621  * @state: the current PCI connection state.
13622  *
13623  * This routine is called from the PCI subsystem for error handling to device
13624  * with SLI-4 interface spec. This function is called by the PCI subsystem
13625  * after a PCI bus error affecting this device has been detected. When this
13626  * function is invoked, it will need to stop all the I/Os and interrupt(s)
13627  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
13628  * for the PCI subsystem to perform proper recovery as desired.
13629  *
13630  * Return codes
13631  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
13632  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13633  **/
13634 static pci_ers_result_t
13635 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
13636 {
13637 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13638 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13639 
13640 	switch (state) {
13641 	case pci_channel_io_normal:
13642 		/* Non-fatal error, prepare for recovery */
13643 		lpfc_sli4_prep_dev_for_recover(phba);
13644 		return PCI_ERS_RESULT_CAN_RECOVER;
13645 	case pci_channel_io_frozen:
13646 		/* Fatal error, prepare for slot reset */
13647 		lpfc_sli4_prep_dev_for_reset(phba);
13648 		return PCI_ERS_RESULT_NEED_RESET;
13649 	case pci_channel_io_perm_failure:
13650 		/* Permanent failure, prepare for device down */
13651 		lpfc_sli4_prep_dev_for_perm_failure(phba);
13652 		return PCI_ERS_RESULT_DISCONNECT;
13653 	default:
13654 		/* Unknown state, prepare and request slot reset */
13655 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13656 				"2825 Unknown PCI error state: x%x\n", state);
13657 		lpfc_sli4_prep_dev_for_reset(phba);
13658 		return PCI_ERS_RESULT_NEED_RESET;
13659 	}
13660 }
13661 
13662 /**
13663  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
13664  * @pdev: pointer to PCI device.
13665  *
13666  * This routine is called from the PCI subsystem for error handling to device
13667  * with SLI-4 interface spec. It is called after PCI bus has been reset to
13668  * restart the PCI card from scratch, as if from a cold-boot. During the
13669  * PCI subsystem error recovery, after the driver returns
13670  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
13671  * recovery and then call this routine before calling the .resume method to
13672  * recover the device. This function will initialize the HBA device, enable
13673  * the interrupt, but it will just put the HBA to offline state without
13674  * passing any I/O traffic.
13675  *
13676  * Return codes
13677  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
13678  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13679  */
13680 static pci_ers_result_t
13681 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
13682 {
13683 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13684 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13685 	struct lpfc_sli *psli = &phba->sli;
13686 	uint32_t intr_mode;
13687 
13688 	dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
13689 	if (pci_enable_device_mem(pdev)) {
13690 		printk(KERN_ERR "lpfc: Cannot re-enable "
13691 			"PCI device after reset.\n");
13692 		return PCI_ERS_RESULT_DISCONNECT;
13693 	}
13694 
13695 	pci_restore_state(pdev);
13696 
13697 	/*
13698 	 * As the new kernel behavior of pci_restore_state() API call clears
13699 	 * device saved_state flag, need to save the restored state again.
13700 	 */
13701 	pci_save_state(pdev);
13702 
13703 	if (pdev->is_busmaster)
13704 		pci_set_master(pdev);
13705 
13706 	spin_lock_irq(&phba->hbalock);
13707 	psli->sli_flag &= ~LPFC_SLI_ACTIVE;
13708 	spin_unlock_irq(&phba->hbalock);
13709 
13710 	/* Configure and enable interrupt */
13711 	intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
13712 	if (intr_mode == LPFC_INTR_ERROR) {
13713 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13714 				"2824 Cannot re-enable interrupt after "
13715 				"slot reset.\n");
13716 		return PCI_ERS_RESULT_DISCONNECT;
13717 	} else
13718 		phba->intr_mode = intr_mode;
13719 
13720 	/* Log the current active interrupt mode */
13721 	lpfc_log_intr_mode(phba, phba->intr_mode);
13722 
13723 	return PCI_ERS_RESULT_RECOVERED;
13724 }
13725 
13726 /**
13727  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
13728  * @pdev: pointer to PCI device
13729  *
13730  * This routine is called from the PCI subsystem for error handling to device
13731  * with SLI-4 interface spec. It is called when kernel error recovery tells
13732  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
13733  * error recovery. After this call, traffic can start to flow from this device
13734  * again.
13735  **/
13736 static void
13737 lpfc_io_resume_s4(struct pci_dev *pdev)
13738 {
13739 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13740 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13741 
13742 	/*
13743 	 * In case of slot reset, as function reset is performed through
13744 	 * mailbox command which needs DMA to be enabled, this operation
13745 	 * has to be moved to the io resume phase. Taking device offline
13746 	 * will perform the necessary cleanup.
13747 	 */
13748 	if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
13749 		/* Perform device reset */
13750 		lpfc_offline_prep(phba, LPFC_MBX_WAIT);
13751 		lpfc_offline(phba);
13752 		lpfc_sli_brdrestart(phba);
13753 		/* Bring the device back online */
13754 		lpfc_online(phba);
13755 	}
13756 }
13757 
13758 /**
13759  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
13760  * @pdev: pointer to PCI device
13761  * @pid: pointer to PCI device identifier
13762  *
13763  * This routine is to be registered to the kernel's PCI subsystem. When an
13764  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
13765  * at PCI device-specific information of the device and driver to see if the
13766  * driver state that it can support this kind of device. If the match is
13767  * successful, the driver core invokes this routine. This routine dispatches
13768  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
13769  * do all the initialization that it needs to do to handle the HBA device
13770  * properly.
13771  *
13772  * Return code
13773  * 	0 - driver can claim the device
13774  * 	negative value - driver can not claim the device
13775  **/
13776 static int
13777 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
13778 {
13779 	int rc;
13780 	struct lpfc_sli_intf intf;
13781 
13782 	if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
13783 		return -ENODEV;
13784 
13785 	if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
13786 	    (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
13787 		rc = lpfc_pci_probe_one_s4(pdev, pid);
13788 	else
13789 		rc = lpfc_pci_probe_one_s3(pdev, pid);
13790 
13791 	return rc;
13792 }
13793 
13794 /**
13795  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
13796  * @pdev: pointer to PCI device
13797  *
13798  * This routine is to be registered to the kernel's PCI subsystem. When an
13799  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
13800  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
13801  * remove routine, which will perform all the necessary cleanup for the
13802  * device to be removed from the PCI subsystem properly.
13803  **/
13804 static void
13805 lpfc_pci_remove_one(struct pci_dev *pdev)
13806 {
13807 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13808 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13809 
13810 	switch (phba->pci_dev_grp) {
13811 	case LPFC_PCI_DEV_LP:
13812 		lpfc_pci_remove_one_s3(pdev);
13813 		break;
13814 	case LPFC_PCI_DEV_OC:
13815 		lpfc_pci_remove_one_s4(pdev);
13816 		break;
13817 	default:
13818 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13819 				"1424 Invalid PCI device group: 0x%x\n",
13820 				phba->pci_dev_grp);
13821 		break;
13822 	}
13823 	return;
13824 }
13825 
13826 /**
13827  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
13828  * @pdev: pointer to PCI device
13829  * @msg: power management message
13830  *
13831  * This routine is to be registered to the kernel's PCI subsystem to support
13832  * system Power Management (PM). When PM invokes this method, it dispatches
13833  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
13834  * suspend the device.
13835  *
13836  * Return code
13837  * 	0 - driver suspended the device
13838  * 	Error otherwise
13839  **/
13840 static int
13841 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
13842 {
13843 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13844 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13845 	int rc = -ENODEV;
13846 
13847 	switch (phba->pci_dev_grp) {
13848 	case LPFC_PCI_DEV_LP:
13849 		rc = lpfc_pci_suspend_one_s3(pdev, msg);
13850 		break;
13851 	case LPFC_PCI_DEV_OC:
13852 		rc = lpfc_pci_suspend_one_s4(pdev, msg);
13853 		break;
13854 	default:
13855 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13856 				"1425 Invalid PCI device group: 0x%x\n",
13857 				phba->pci_dev_grp);
13858 		break;
13859 	}
13860 	return rc;
13861 }
13862 
13863 /**
13864  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
13865  * @pdev: pointer to PCI device
13866  *
13867  * This routine is to be registered to the kernel's PCI subsystem to support
13868  * system Power Management (PM). When PM invokes this method, it dispatches
13869  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
13870  * resume the device.
13871  *
13872  * Return code
13873  * 	0 - driver suspended the device
13874  * 	Error otherwise
13875  **/
13876 static int
13877 lpfc_pci_resume_one(struct pci_dev *pdev)
13878 {
13879 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13880 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13881 	int rc = -ENODEV;
13882 
13883 	switch (phba->pci_dev_grp) {
13884 	case LPFC_PCI_DEV_LP:
13885 		rc = lpfc_pci_resume_one_s3(pdev);
13886 		break;
13887 	case LPFC_PCI_DEV_OC:
13888 		rc = lpfc_pci_resume_one_s4(pdev);
13889 		break;
13890 	default:
13891 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13892 				"1426 Invalid PCI device group: 0x%x\n",
13893 				phba->pci_dev_grp);
13894 		break;
13895 	}
13896 	return rc;
13897 }
13898 
13899 /**
13900  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
13901  * @pdev: pointer to PCI device.
13902  * @state: the current PCI connection state.
13903  *
13904  * This routine is registered to the PCI subsystem for error handling. This
13905  * function is called by the PCI subsystem after a PCI bus error affecting
13906  * this device has been detected. When this routine is invoked, it dispatches
13907  * the action to the proper SLI-3 or SLI-4 device error detected handling
13908  * routine, which will perform the proper error detected operation.
13909  *
13910  * Return codes
13911  * 	PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
13912  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13913  **/
13914 static pci_ers_result_t
13915 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
13916 {
13917 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13918 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13919 	pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
13920 
13921 	switch (phba->pci_dev_grp) {
13922 	case LPFC_PCI_DEV_LP:
13923 		rc = lpfc_io_error_detected_s3(pdev, state);
13924 		break;
13925 	case LPFC_PCI_DEV_OC:
13926 		rc = lpfc_io_error_detected_s4(pdev, state);
13927 		break;
13928 	default:
13929 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13930 				"1427 Invalid PCI device group: 0x%x\n",
13931 				phba->pci_dev_grp);
13932 		break;
13933 	}
13934 	return rc;
13935 }
13936 
13937 /**
13938  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
13939  * @pdev: pointer to PCI device.
13940  *
13941  * This routine is registered to the PCI subsystem for error handling. This
13942  * function is called after PCI bus has been reset to restart the PCI card
13943  * from scratch, as if from a cold-boot. When this routine is invoked, it
13944  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
13945  * routine, which will perform the proper device reset.
13946  *
13947  * Return codes
13948  * 	PCI_ERS_RESULT_RECOVERED - the device has been recovered
13949  * 	PCI_ERS_RESULT_DISCONNECT - device could not be recovered
13950  **/
13951 static pci_ers_result_t
13952 lpfc_io_slot_reset(struct pci_dev *pdev)
13953 {
13954 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13955 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13956 	pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
13957 
13958 	switch (phba->pci_dev_grp) {
13959 	case LPFC_PCI_DEV_LP:
13960 		rc = lpfc_io_slot_reset_s3(pdev);
13961 		break;
13962 	case LPFC_PCI_DEV_OC:
13963 		rc = lpfc_io_slot_reset_s4(pdev);
13964 		break;
13965 	default:
13966 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13967 				"1428 Invalid PCI device group: 0x%x\n",
13968 				phba->pci_dev_grp);
13969 		break;
13970 	}
13971 	return rc;
13972 }
13973 
13974 /**
13975  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
13976  * @pdev: pointer to PCI device
13977  *
13978  * This routine is registered to the PCI subsystem for error handling. It
13979  * is called when kernel error recovery tells the lpfc driver that it is
13980  * OK to resume normal PCI operation after PCI bus error recovery. When
13981  * this routine is invoked, it dispatches the action to the proper SLI-3
13982  * or SLI-4 device io_resume routine, which will resume the device operation.
13983  **/
13984 static void
13985 lpfc_io_resume(struct pci_dev *pdev)
13986 {
13987 	struct Scsi_Host *shost = pci_get_drvdata(pdev);
13988 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
13989 
13990 	switch (phba->pci_dev_grp) {
13991 	case LPFC_PCI_DEV_LP:
13992 		lpfc_io_resume_s3(pdev);
13993 		break;
13994 	case LPFC_PCI_DEV_OC:
13995 		lpfc_io_resume_s4(pdev);
13996 		break;
13997 	default:
13998 		lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT,
13999 				"1429 Invalid PCI device group: 0x%x\n",
14000 				phba->pci_dev_grp);
14001 		break;
14002 	}
14003 	return;
14004 }
14005 
14006 /**
14007  * lpfc_sli4_oas_verify - Verify OAS is supported by this adapter
14008  * @phba: pointer to lpfc hba data structure.
14009  *
14010  * This routine checks to see if OAS is supported for this adapter. If
14011  * supported, the configure Flash Optimized Fabric flag is set.  Otherwise,
14012  * the enable oas flag is cleared and the pool created for OAS device data
14013  * is destroyed.
14014  *
14015  **/
14016 static void
14017 lpfc_sli4_oas_verify(struct lpfc_hba *phba)
14018 {
14019 
14020 	if (!phba->cfg_EnableXLane)
14021 		return;
14022 
14023 	if (phba->sli4_hba.pc_sli4_params.oas_supported) {
14024 		phba->cfg_fof = 1;
14025 	} else {
14026 		phba->cfg_fof = 0;
14027 		mempool_destroy(phba->device_data_mem_pool);
14028 		phba->device_data_mem_pool = NULL;
14029 	}
14030 
14031 	return;
14032 }
14033 
14034 /**
14035  * lpfc_sli4_ras_init - Verify RAS-FW log is supported by this adapter
14036  * @phba: pointer to lpfc hba data structure.
14037  *
14038  * This routine checks to see if RAS is supported by the adapter. Check the
14039  * function through which RAS support enablement is to be done.
14040  **/
14041 void
14042 lpfc_sli4_ras_init(struct lpfc_hba *phba)
14043 {
14044 	switch (phba->pcidev->device) {
14045 	case PCI_DEVICE_ID_LANCER_G6_FC:
14046 	case PCI_DEVICE_ID_LANCER_G7_FC:
14047 		phba->ras_fwlog.ras_hwsupport = true;
14048 		if (phba->cfg_ras_fwlog_func == PCI_FUNC(phba->pcidev->devfn) &&
14049 		    phba->cfg_ras_fwlog_buffsize)
14050 			phba->ras_fwlog.ras_enabled = true;
14051 		else
14052 			phba->ras_fwlog.ras_enabled = false;
14053 		break;
14054 	default:
14055 		phba->ras_fwlog.ras_hwsupport = false;
14056 	}
14057 }
14058 
14059 
14060 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
14061 
14062 static const struct pci_error_handlers lpfc_err_handler = {
14063 	.error_detected = lpfc_io_error_detected,
14064 	.slot_reset = lpfc_io_slot_reset,
14065 	.resume = lpfc_io_resume,
14066 };
14067 
14068 static struct pci_driver lpfc_driver = {
14069 	.name		= LPFC_DRIVER_NAME,
14070 	.id_table	= lpfc_id_table,
14071 	.probe		= lpfc_pci_probe_one,
14072 	.remove		= lpfc_pci_remove_one,
14073 	.shutdown	= lpfc_pci_remove_one,
14074 	.suspend        = lpfc_pci_suspend_one,
14075 	.resume		= lpfc_pci_resume_one,
14076 	.err_handler    = &lpfc_err_handler,
14077 };
14078 
14079 static const struct file_operations lpfc_mgmt_fop = {
14080 	.owner = THIS_MODULE,
14081 };
14082 
14083 static struct miscdevice lpfc_mgmt_dev = {
14084 	.minor = MISC_DYNAMIC_MINOR,
14085 	.name = "lpfcmgmt",
14086 	.fops = &lpfc_mgmt_fop,
14087 };
14088 
14089 /**
14090  * lpfc_init - lpfc module initialization routine
14091  *
14092  * This routine is to be invoked when the lpfc module is loaded into the
14093  * kernel. The special kernel macro module_init() is used to indicate the
14094  * role of this routine to the kernel as lpfc module entry point.
14095  *
14096  * Return codes
14097  *   0 - successful
14098  *   -ENOMEM - FC attach transport failed
14099  *   all others - failed
14100  */
14101 static int __init
14102 lpfc_init(void)
14103 {
14104 	int error = 0;
14105 
14106 	pr_info(LPFC_MODULE_DESC "\n");
14107 	pr_info(LPFC_COPYRIGHT "\n");
14108 
14109 	error = misc_register(&lpfc_mgmt_dev);
14110 	if (error)
14111 		printk(KERN_ERR "Could not register lpfcmgmt device, "
14112 			"misc_register returned with status %d", error);
14113 
14114 	error = -ENOMEM;
14115 	lpfc_transport_functions.vport_create = lpfc_vport_create;
14116 	lpfc_transport_functions.vport_delete = lpfc_vport_delete;
14117 	lpfc_transport_template =
14118 				fc_attach_transport(&lpfc_transport_functions);
14119 	if (lpfc_transport_template == NULL)
14120 		goto unregister;
14121 	lpfc_vport_transport_template =
14122 		fc_attach_transport(&lpfc_vport_transport_functions);
14123 	if (lpfc_vport_transport_template == NULL) {
14124 		fc_release_transport(lpfc_transport_template);
14125 		goto unregister;
14126 	}
14127 	lpfc_nvme_cmd_template();
14128 	lpfc_nvmet_cmd_template();
14129 
14130 	/* Initialize in case vector mapping is needed */
14131 	lpfc_present_cpu = num_present_cpus();
14132 
14133 	error = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN,
14134 					"lpfc/sli4:online",
14135 					lpfc_cpu_online, lpfc_cpu_offline);
14136 	if (error < 0)
14137 		goto cpuhp_failure;
14138 	lpfc_cpuhp_state = error;
14139 
14140 	error = pci_register_driver(&lpfc_driver);
14141 	if (error)
14142 		goto unwind;
14143 
14144 	return error;
14145 
14146 unwind:
14147 	cpuhp_remove_multi_state(lpfc_cpuhp_state);
14148 cpuhp_failure:
14149 	fc_release_transport(lpfc_transport_template);
14150 	fc_release_transport(lpfc_vport_transport_template);
14151 unregister:
14152 	misc_deregister(&lpfc_mgmt_dev);
14153 
14154 	return error;
14155 }
14156 
14157 void lpfc_dmp_dbg(struct lpfc_hba *phba)
14158 {
14159 	unsigned int start_idx;
14160 	unsigned int dbg_cnt;
14161 	unsigned int temp_idx;
14162 	int i;
14163 	int j = 0;
14164 	unsigned long rem_nsec;
14165 
14166 	if (phba->cfg_log_verbose)
14167 		return;
14168 
14169 	if (atomic_cmpxchg(&phba->dbg_log_dmping, 0, 1) != 0)
14170 		return;
14171 
14172 	start_idx = (unsigned int)atomic_read(&phba->dbg_log_idx) % DBG_LOG_SZ;
14173 	dbg_cnt = (unsigned int)atomic_read(&phba->dbg_log_cnt);
14174 	temp_idx = start_idx;
14175 	if (dbg_cnt >= DBG_LOG_SZ) {
14176 		dbg_cnt = DBG_LOG_SZ;
14177 		temp_idx -= 1;
14178 	} else {
14179 		if ((start_idx + dbg_cnt) > (DBG_LOG_SZ - 1)) {
14180 			temp_idx = (start_idx + dbg_cnt) % DBG_LOG_SZ;
14181 		} else {
14182 			if (start_idx < dbg_cnt)
14183 				start_idx = DBG_LOG_SZ - (dbg_cnt - start_idx);
14184 			else
14185 				start_idx -= dbg_cnt;
14186 		}
14187 	}
14188 	dev_info(&phba->pcidev->dev, "start %d end %d cnt %d\n",
14189 		 start_idx, temp_idx, dbg_cnt);
14190 
14191 	for (i = 0; i < dbg_cnt; i++) {
14192 		if ((start_idx + i) < DBG_LOG_SZ)
14193 			temp_idx = (start_idx + i) % DBG_LOG_SZ;
14194 		else
14195 			temp_idx = j++;
14196 		rem_nsec = do_div(phba->dbg_log[temp_idx].t_ns, NSEC_PER_SEC);
14197 		dev_info(&phba->pcidev->dev, "%d: [%5lu.%06lu] %s",
14198 			 temp_idx,
14199 			 (unsigned long)phba->dbg_log[temp_idx].t_ns,
14200 			 rem_nsec / 1000,
14201 			 phba->dbg_log[temp_idx].log);
14202 	}
14203 	atomic_set(&phba->dbg_log_cnt, 0);
14204 	atomic_set(&phba->dbg_log_dmping, 0);
14205 }
14206 
14207 __printf(2, 3)
14208 void lpfc_dbg_print(struct lpfc_hba *phba, const char *fmt, ...)
14209 {
14210 	unsigned int idx;
14211 	va_list args;
14212 	int dbg_dmping = atomic_read(&phba->dbg_log_dmping);
14213 	struct va_format vaf;
14214 
14215 
14216 	va_start(args, fmt);
14217 	if (unlikely(dbg_dmping)) {
14218 		vaf.fmt = fmt;
14219 		vaf.va = &args;
14220 		dev_info(&phba->pcidev->dev, "%pV", &vaf);
14221 		va_end(args);
14222 		return;
14223 	}
14224 	idx = (unsigned int)atomic_fetch_add(1, &phba->dbg_log_idx) %
14225 		DBG_LOG_SZ;
14226 
14227 	atomic_inc(&phba->dbg_log_cnt);
14228 
14229 	vscnprintf(phba->dbg_log[idx].log,
14230 		   sizeof(phba->dbg_log[idx].log), fmt, args);
14231 	va_end(args);
14232 
14233 	phba->dbg_log[idx].t_ns = local_clock();
14234 }
14235 
14236 /**
14237  * lpfc_exit - lpfc module removal routine
14238  *
14239  * This routine is invoked when the lpfc module is removed from the kernel.
14240  * The special kernel macro module_exit() is used to indicate the role of
14241  * this routine to the kernel as lpfc module exit point.
14242  */
14243 static void __exit
14244 lpfc_exit(void)
14245 {
14246 	misc_deregister(&lpfc_mgmt_dev);
14247 	pci_unregister_driver(&lpfc_driver);
14248 	cpuhp_remove_multi_state(lpfc_cpuhp_state);
14249 	fc_release_transport(lpfc_transport_template);
14250 	fc_release_transport(lpfc_vport_transport_template);
14251 	idr_destroy(&lpfc_hba_index);
14252 }
14253 
14254 module_init(lpfc_init);
14255 module_exit(lpfc_exit);
14256 MODULE_LICENSE("GPL");
14257 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
14258 MODULE_AUTHOR("Broadcom");
14259 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);
14260