xref: /openbmc/linux/drivers/scsi/lpfc/lpfc_attr.c (revision 5d0e4d78)
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2017 Broadcom. All Rights Reserved. The term      *
5  * “Broadcom” refers to Broadcom Limited 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/ctype.h>
25 #include <linux/delay.h>
26 #include <linux/pci.h>
27 #include <linux/interrupt.h>
28 #include <linux/module.h>
29 #include <linux/aer.h>
30 #include <linux/gfp.h>
31 #include <linux/kernel.h>
32 
33 #include <scsi/scsi.h>
34 #include <scsi/scsi_device.h>
35 #include <scsi/scsi_host.h>
36 #include <scsi/scsi_tcq.h>
37 #include <scsi/scsi_transport_fc.h>
38 #include <scsi/fc/fc_fs.h>
39 
40 #include <linux/nvme-fc-driver.h>
41 
42 #include "lpfc_hw4.h"
43 #include "lpfc_hw.h"
44 #include "lpfc_sli.h"
45 #include "lpfc_sli4.h"
46 #include "lpfc_nl.h"
47 #include "lpfc_disc.h"
48 #include "lpfc.h"
49 #include "lpfc_scsi.h"
50 #include "lpfc_nvme.h"
51 #include "lpfc_nvmet.h"
52 #include "lpfc_logmsg.h"
53 #include "lpfc_version.h"
54 #include "lpfc_compat.h"
55 #include "lpfc_crtn.h"
56 #include "lpfc_vport.h"
57 #include "lpfc_attr.h"
58 
59 #define LPFC_DEF_DEVLOSS_TMO	30
60 #define LPFC_MIN_DEVLOSS_TMO	1
61 #define LPFC_MAX_DEVLOSS_TMO	255
62 
63 #define LPFC_DEF_MRQ_POST	512
64 #define LPFC_MIN_MRQ_POST	512
65 #define LPFC_MAX_MRQ_POST	2048
66 
67 /*
68  * Write key size should be multiple of 4. If write key is changed
69  * make sure that library write key is also changed.
70  */
71 #define LPFC_REG_WRITE_KEY_SIZE	4
72 #define LPFC_REG_WRITE_KEY	"EMLX"
73 
74 /**
75  * lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules
76  * @incr: integer to convert.
77  * @hdw: ascii string holding converted integer plus a string terminator.
78  *
79  * Description:
80  * JEDEC Joint Electron Device Engineering Council.
81  * Convert a 32 bit integer composed of 8 nibbles into an 8 byte ascii
82  * character string. The string is then terminated with a NULL in byte 9.
83  * Hex 0-9 becomes ascii '0' to '9'.
84  * Hex a-f becomes ascii '=' to 'B' capital B.
85  *
86  * Notes:
87  * Coded for 32 bit integers only.
88  **/
89 static void
90 lpfc_jedec_to_ascii(int incr, char hdw[])
91 {
92 	int i, j;
93 	for (i = 0; i < 8; i++) {
94 		j = (incr & 0xf);
95 		if (j <= 9)
96 			hdw[7 - i] = 0x30 +  j;
97 		 else
98 			hdw[7 - i] = 0x61 + j - 10;
99 		incr = (incr >> 4);
100 	}
101 	hdw[8] = 0;
102 	return;
103 }
104 
105 /**
106  * lpfc_drvr_version_show - Return the Emulex driver string with version number
107  * @dev: class unused variable.
108  * @attr: device attribute, not used.
109  * @buf: on return contains the module description text.
110  *
111  * Returns: size of formatted string.
112  **/
113 static ssize_t
114 lpfc_drvr_version_show(struct device *dev, struct device_attribute *attr,
115 		       char *buf)
116 {
117 	return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
118 }
119 
120 /**
121  * lpfc_enable_fip_show - Return the fip mode of the HBA
122  * @dev: class unused variable.
123  * @attr: device attribute, not used.
124  * @buf: on return contains the module description text.
125  *
126  * Returns: size of formatted string.
127  **/
128 static ssize_t
129 lpfc_enable_fip_show(struct device *dev, struct device_attribute *attr,
130 		       char *buf)
131 {
132 	struct Scsi_Host *shost = class_to_shost(dev);
133 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
134 	struct lpfc_hba   *phba = vport->phba;
135 
136 	if (phba->hba_flag & HBA_FIP_SUPPORT)
137 		return snprintf(buf, PAGE_SIZE, "1\n");
138 	else
139 		return snprintf(buf, PAGE_SIZE, "0\n");
140 }
141 
142 static ssize_t
143 lpfc_nvme_info_show(struct device *dev, struct device_attribute *attr,
144 		    char *buf)
145 {
146 	struct Scsi_Host *shost = class_to_shost(dev);
147 	struct lpfc_vport *vport = shost_priv(shost);
148 	struct lpfc_hba   *phba = vport->phba;
149 	struct lpfc_nvmet_tgtport *tgtp;
150 	struct nvme_fc_local_port *localport;
151 	struct lpfc_nodelist *ndlp;
152 	struct nvme_fc_remote_port *nrport;
153 	uint64_t data1, data2, data3, tot;
154 	char *statep;
155 	int len = 0;
156 
157 	if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
158 		len += snprintf(buf, PAGE_SIZE, "NVME Disabled\n");
159 		return len;
160 	}
161 	if (phba->nvmet_support) {
162 		if (!phba->targetport) {
163 			len = snprintf(buf, PAGE_SIZE,
164 					"NVME Target: x%llx is not allocated\n",
165 					wwn_to_u64(vport->fc_portname.u.wwn));
166 			return len;
167 		}
168 		/* Port state is only one of two values for now. */
169 		if (phba->targetport->port_id)
170 			statep = "REGISTERED";
171 		else
172 			statep = "INIT";
173 		len += snprintf(buf + len, PAGE_SIZE - len,
174 				"NVME Target Enabled  State %s\n",
175 				statep);
176 		len += snprintf(buf + len, PAGE_SIZE - len,
177 				"%s%d WWPN x%llx WWNN x%llx DID x%06x\n",
178 				"NVME Target: lpfc",
179 				phba->brd_no,
180 				wwn_to_u64(vport->fc_portname.u.wwn),
181 				wwn_to_u64(vport->fc_nodename.u.wwn),
182 				phba->targetport->port_id);
183 
184 		len += snprintf(buf + len, PAGE_SIZE - len,
185 				"\nNVME Target: Statistics\n");
186 		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
187 		len += snprintf(buf+len, PAGE_SIZE-len,
188 				"LS: Rcv %08x Drop %08x Abort %08x\n",
189 				atomic_read(&tgtp->rcv_ls_req_in),
190 				atomic_read(&tgtp->rcv_ls_req_drop),
191 				atomic_read(&tgtp->xmt_ls_abort));
192 		if (atomic_read(&tgtp->rcv_ls_req_in) !=
193 		    atomic_read(&tgtp->rcv_ls_req_out)) {
194 			len += snprintf(buf+len, PAGE_SIZE-len,
195 					"Rcv LS: in %08x != out %08x\n",
196 					atomic_read(&tgtp->rcv_ls_req_in),
197 					atomic_read(&tgtp->rcv_ls_req_out));
198 		}
199 
200 		len += snprintf(buf+len, PAGE_SIZE-len,
201 				"LS: Xmt %08x Drop %08x Cmpl %08x Err %08x\n",
202 				atomic_read(&tgtp->xmt_ls_rsp),
203 				atomic_read(&tgtp->xmt_ls_drop),
204 				atomic_read(&tgtp->xmt_ls_rsp_cmpl),
205 				atomic_read(&tgtp->xmt_ls_rsp_error));
206 
207 		len += snprintf(buf+len, PAGE_SIZE-len,
208 				"FCP: Rcv %08x Release %08x Drop %08x\n",
209 				atomic_read(&tgtp->rcv_fcp_cmd_in),
210 				atomic_read(&tgtp->xmt_fcp_release),
211 				atomic_read(&tgtp->rcv_fcp_cmd_drop));
212 
213 		if (atomic_read(&tgtp->rcv_fcp_cmd_in) !=
214 		    atomic_read(&tgtp->rcv_fcp_cmd_out)) {
215 			len += snprintf(buf+len, PAGE_SIZE-len,
216 					"Rcv FCP: in %08x != out %08x\n",
217 					atomic_read(&tgtp->rcv_fcp_cmd_in),
218 					atomic_read(&tgtp->rcv_fcp_cmd_out));
219 		}
220 
221 		len += snprintf(buf+len, PAGE_SIZE-len,
222 				"FCP Rsp: RD %08x rsp %08x WR %08x rsp %08x "
223 				"drop %08x\n",
224 				atomic_read(&tgtp->xmt_fcp_read),
225 				atomic_read(&tgtp->xmt_fcp_read_rsp),
226 				atomic_read(&tgtp->xmt_fcp_write),
227 				atomic_read(&tgtp->xmt_fcp_rsp),
228 				atomic_read(&tgtp->xmt_fcp_drop));
229 
230 		len += snprintf(buf+len, PAGE_SIZE-len,
231 				"FCP Rsp Cmpl: %08x err %08x drop %08x\n",
232 				atomic_read(&tgtp->xmt_fcp_rsp_cmpl),
233 				atomic_read(&tgtp->xmt_fcp_rsp_error),
234 				atomic_read(&tgtp->xmt_fcp_rsp_drop));
235 
236 		len += snprintf(buf+len, PAGE_SIZE-len,
237 				"ABORT: Xmt %08x Cmpl %08x\n",
238 				atomic_read(&tgtp->xmt_fcp_abort),
239 				atomic_read(&tgtp->xmt_fcp_abort_cmpl));
240 
241 		len += snprintf(buf + len, PAGE_SIZE - len,
242 				"ABORT: Sol %08x  Usol %08x Err %08x Cmpl %08x",
243 				atomic_read(&tgtp->xmt_abort_sol),
244 				atomic_read(&tgtp->xmt_abort_unsol),
245 				atomic_read(&tgtp->xmt_abort_rsp),
246 				atomic_read(&tgtp->xmt_abort_rsp_error));
247 
248 		spin_lock(&phba->sli4_hba.nvmet_ctx_get_lock);
249 		spin_lock(&phba->sli4_hba.nvmet_ctx_put_lock);
250 		tot = phba->sli4_hba.nvmet_xri_cnt -
251 			(phba->sli4_hba.nvmet_ctx_get_cnt +
252 			phba->sli4_hba.nvmet_ctx_put_cnt);
253 		spin_unlock(&phba->sli4_hba.nvmet_ctx_put_lock);
254 		spin_unlock(&phba->sli4_hba.nvmet_ctx_get_lock);
255 
256 		len += snprintf(buf + len, PAGE_SIZE - len,
257 				"IO_CTX: %08x  WAIT: cur %08x tot %08x\n"
258 				"CTX Outstanding %08llx\n",
259 				phba->sli4_hba.nvmet_xri_cnt,
260 				phba->sli4_hba.nvmet_io_wait_cnt,
261 				phba->sli4_hba.nvmet_io_wait_total,
262 				tot);
263 
264 		len +=  snprintf(buf+len, PAGE_SIZE-len, "\n");
265 		return len;
266 	}
267 
268 	localport = vport->localport;
269 	if (!localport) {
270 		len = snprintf(buf, PAGE_SIZE,
271 				"NVME Initiator x%llx is not allocated\n",
272 				wwn_to_u64(vport->fc_portname.u.wwn));
273 		return len;
274 	}
275 	len = snprintf(buf, PAGE_SIZE, "NVME Initiator Enabled\n");
276 
277 	spin_lock_irq(shost->host_lock);
278 
279 	/* Port state is only one of two values for now. */
280 	if (localport->port_id)
281 		statep = "ONLINE";
282 	else
283 		statep = "UNKNOWN ";
284 
285 	len += snprintf(buf + len, PAGE_SIZE - len,
286 			"%s%d WWPN x%llx WWNN x%llx DID x%06x %s\n",
287 			"NVME LPORT lpfc",
288 			phba->brd_no,
289 			wwn_to_u64(vport->fc_portname.u.wwn),
290 			wwn_to_u64(vport->fc_nodename.u.wwn),
291 			localport->port_id, statep);
292 
293 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
294 		if (!ndlp->nrport)
295 			continue;
296 
297 		/* local short-hand pointer. */
298 		nrport = ndlp->nrport->remoteport;
299 
300 		/* Port state is only one of two values for now. */
301 		switch (nrport->port_state) {
302 		case FC_OBJSTATE_ONLINE:
303 			statep = "ONLINE";
304 			break;
305 		case FC_OBJSTATE_UNKNOWN:
306 			statep = "UNKNOWN ";
307 			break;
308 		default:
309 			statep = "UNSUPPORTED";
310 			break;
311 		}
312 
313 		/* Tab in to show lport ownership. */
314 		len += snprintf(buf + len, PAGE_SIZE - len,
315 				"NVME RPORT       ");
316 		if (phba->brd_no >= 10)
317 			len += snprintf(buf + len, PAGE_SIZE - len, " ");
318 
319 		len += snprintf(buf + len, PAGE_SIZE - len, "WWPN x%llx ",
320 				nrport->port_name);
321 		len += snprintf(buf + len, PAGE_SIZE - len, "WWNN x%llx ",
322 				nrport->node_name);
323 		len += snprintf(buf + len, PAGE_SIZE - len, "DID x%06x ",
324 				nrport->port_id);
325 
326 		/* An NVME rport can have multiple roles. */
327 		if (nrport->port_role & FC_PORT_ROLE_NVME_INITIATOR)
328 			len +=  snprintf(buf + len, PAGE_SIZE - len,
329 					 "INITIATOR ");
330 		if (nrport->port_role & FC_PORT_ROLE_NVME_TARGET)
331 			len +=  snprintf(buf + len, PAGE_SIZE - len,
332 					 "TARGET ");
333 		if (nrport->port_role & FC_PORT_ROLE_NVME_DISCOVERY)
334 			len +=  snprintf(buf + len, PAGE_SIZE - len,
335 					 "DISCSRVC ");
336 		if (nrport->port_role & ~(FC_PORT_ROLE_NVME_INITIATOR |
337 					  FC_PORT_ROLE_NVME_TARGET |
338 					  FC_PORT_ROLE_NVME_DISCOVERY))
339 			len +=  snprintf(buf + len, PAGE_SIZE - len,
340 					 "UNKNOWN ROLE x%x",
341 					 nrport->port_role);
342 
343 		len +=  snprintf(buf + len, PAGE_SIZE - len, "%s  ", statep);
344 		/* Terminate the string. */
345 		len +=  snprintf(buf + len, PAGE_SIZE - len, "\n");
346 	}
347 	spin_unlock_irq(shost->host_lock);
348 
349 	len += snprintf(buf + len, PAGE_SIZE - len, "\nNVME Statistics\n");
350 	len += snprintf(buf+len, PAGE_SIZE-len,
351 			"LS: Xmt %016x Cmpl %016x\n",
352 			atomic_read(&phba->fc4NvmeLsRequests),
353 			atomic_read(&phba->fc4NvmeLsCmpls));
354 
355 	tot = atomic_read(&phba->fc4NvmeIoCmpls);
356 	data1 = atomic_read(&phba->fc4NvmeInputRequests);
357 	data2 = atomic_read(&phba->fc4NvmeOutputRequests);
358 	data3 = atomic_read(&phba->fc4NvmeControlRequests);
359 	len += snprintf(buf+len, PAGE_SIZE-len,
360 			"FCP: Rd %016llx Wr %016llx IO %016llx\n",
361 			data1, data2, data3);
362 
363 	len += snprintf(buf+len, PAGE_SIZE-len,
364 			"    Cmpl %016llx Outstanding %016llx\n",
365 			tot, (data1 + data2 + data3) - tot);
366 	return len;
367 }
368 
369 static ssize_t
370 lpfc_bg_info_show(struct device *dev, struct device_attribute *attr,
371 		  char *buf)
372 {
373 	struct Scsi_Host *shost = class_to_shost(dev);
374 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
375 	struct lpfc_hba   *phba = vport->phba;
376 
377 	if (phba->cfg_enable_bg)
378 		if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
379 			return snprintf(buf, PAGE_SIZE, "BlockGuard Enabled\n");
380 		else
381 			return snprintf(buf, PAGE_SIZE,
382 					"BlockGuard Not Supported\n");
383 	else
384 			return snprintf(buf, PAGE_SIZE,
385 					"BlockGuard Disabled\n");
386 }
387 
388 static ssize_t
389 lpfc_bg_guard_err_show(struct device *dev, struct device_attribute *attr,
390 		       char *buf)
391 {
392 	struct Scsi_Host *shost = class_to_shost(dev);
393 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
394 	struct lpfc_hba   *phba = vport->phba;
395 
396 	return snprintf(buf, PAGE_SIZE, "%llu\n",
397 			(unsigned long long)phba->bg_guard_err_cnt);
398 }
399 
400 static ssize_t
401 lpfc_bg_apptag_err_show(struct device *dev, struct device_attribute *attr,
402 			char *buf)
403 {
404 	struct Scsi_Host *shost = class_to_shost(dev);
405 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
406 	struct lpfc_hba   *phba = vport->phba;
407 
408 	return snprintf(buf, PAGE_SIZE, "%llu\n",
409 			(unsigned long long)phba->bg_apptag_err_cnt);
410 }
411 
412 static ssize_t
413 lpfc_bg_reftag_err_show(struct device *dev, struct device_attribute *attr,
414 			char *buf)
415 {
416 	struct Scsi_Host *shost = class_to_shost(dev);
417 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
418 	struct lpfc_hba   *phba = vport->phba;
419 
420 	return snprintf(buf, PAGE_SIZE, "%llu\n",
421 			(unsigned long long)phba->bg_reftag_err_cnt);
422 }
423 
424 /**
425  * lpfc_info_show - Return some pci info about the host in ascii
426  * @dev: class converted to a Scsi_host structure.
427  * @attr: device attribute, not used.
428  * @buf: on return contains the formatted text from lpfc_info().
429  *
430  * Returns: size of formatted string.
431  **/
432 static ssize_t
433 lpfc_info_show(struct device *dev, struct device_attribute *attr,
434 	       char *buf)
435 {
436 	struct Scsi_Host *host = class_to_shost(dev);
437 
438 	return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
439 }
440 
441 /**
442  * lpfc_serialnum_show - Return the hba serial number in ascii
443  * @dev: class converted to a Scsi_host structure.
444  * @attr: device attribute, not used.
445  * @buf: on return contains the formatted text serial number.
446  *
447  * Returns: size of formatted string.
448  **/
449 static ssize_t
450 lpfc_serialnum_show(struct device *dev, struct device_attribute *attr,
451 		    char *buf)
452 {
453 	struct Scsi_Host  *shost = class_to_shost(dev);
454 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
455 	struct lpfc_hba   *phba = vport->phba;
456 
457 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
458 }
459 
460 /**
461  * lpfc_temp_sensor_show - Return the temperature sensor level
462  * @dev: class converted to a Scsi_host structure.
463  * @attr: device attribute, not used.
464  * @buf: on return contains the formatted support level.
465  *
466  * Description:
467  * Returns a number indicating the temperature sensor level currently
468  * supported, zero or one in ascii.
469  *
470  * Returns: size of formatted string.
471  **/
472 static ssize_t
473 lpfc_temp_sensor_show(struct device *dev, struct device_attribute *attr,
474 		      char *buf)
475 {
476 	struct Scsi_Host *shost = class_to_shost(dev);
477 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
478 	struct lpfc_hba   *phba = vport->phba;
479 	return snprintf(buf, PAGE_SIZE, "%d\n",phba->temp_sensor_support);
480 }
481 
482 /**
483  * lpfc_modeldesc_show - Return the model description of the hba
484  * @dev: class converted to a Scsi_host structure.
485  * @attr: device attribute, not used.
486  * @buf: on return contains the scsi vpd model description.
487  *
488  * Returns: size of formatted string.
489  **/
490 static ssize_t
491 lpfc_modeldesc_show(struct device *dev, struct device_attribute *attr,
492 		    char *buf)
493 {
494 	struct Scsi_Host  *shost = class_to_shost(dev);
495 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
496 	struct lpfc_hba   *phba = vport->phba;
497 
498 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
499 }
500 
501 /**
502  * lpfc_modelname_show - Return the model name of the hba
503  * @dev: class converted to a Scsi_host structure.
504  * @attr: device attribute, not used.
505  * @buf: on return contains the scsi vpd model name.
506  *
507  * Returns: size of formatted string.
508  **/
509 static ssize_t
510 lpfc_modelname_show(struct device *dev, struct device_attribute *attr,
511 		    char *buf)
512 {
513 	struct Scsi_Host  *shost = class_to_shost(dev);
514 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
515 	struct lpfc_hba   *phba = vport->phba;
516 
517 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
518 }
519 
520 /**
521  * lpfc_programtype_show - Return the program type of the hba
522  * @dev: class converted to a Scsi_host structure.
523  * @attr: device attribute, not used.
524  * @buf: on return contains the scsi vpd program type.
525  *
526  * Returns: size of formatted string.
527  **/
528 static ssize_t
529 lpfc_programtype_show(struct device *dev, struct device_attribute *attr,
530 		      char *buf)
531 {
532 	struct Scsi_Host  *shost = class_to_shost(dev);
533 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
534 	struct lpfc_hba   *phba = vport->phba;
535 
536 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
537 }
538 
539 /**
540  * lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag
541  * @dev: class converted to a Scsi_host structure.
542  * @attr: device attribute, not used.
543  * @buf: on return contains the Menlo Maintenance sli flag.
544  *
545  * Returns: size of formatted string.
546  **/
547 static ssize_t
548 lpfc_mlomgmt_show(struct device *dev, struct device_attribute *attr, char *buf)
549 {
550 	struct Scsi_Host  *shost = class_to_shost(dev);
551 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
552 	struct lpfc_hba   *phba = vport->phba;
553 
554 	return snprintf(buf, PAGE_SIZE, "%d\n",
555 		(phba->sli.sli_flag & LPFC_MENLO_MAINT));
556 }
557 
558 /**
559  * lpfc_vportnum_show - Return the port number in ascii of the hba
560  * @dev: class converted to a Scsi_host structure.
561  * @attr: device attribute, not used.
562  * @buf: on return contains scsi vpd program type.
563  *
564  * Returns: size of formatted string.
565  **/
566 static ssize_t
567 lpfc_vportnum_show(struct device *dev, struct device_attribute *attr,
568 		   char *buf)
569 {
570 	struct Scsi_Host  *shost = class_to_shost(dev);
571 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
572 	struct lpfc_hba   *phba = vport->phba;
573 
574 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
575 }
576 
577 /**
578  * lpfc_fwrev_show - Return the firmware rev running in the hba
579  * @dev: class converted to a Scsi_host structure.
580  * @attr: device attribute, not used.
581  * @buf: on return contains the scsi vpd program type.
582  *
583  * Returns: size of formatted string.
584  **/
585 static ssize_t
586 lpfc_fwrev_show(struct device *dev, struct device_attribute *attr,
587 		char *buf)
588 {
589 	struct Scsi_Host  *shost = class_to_shost(dev);
590 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
591 	struct lpfc_hba   *phba = vport->phba;
592 	uint32_t if_type;
593 	uint8_t sli_family;
594 	char fwrev[FW_REV_STR_SIZE];
595 	int len;
596 
597 	lpfc_decode_firmware_rev(phba, fwrev, 1);
598 	if_type = phba->sli4_hba.pc_sli4_params.if_type;
599 	sli_family = phba->sli4_hba.pc_sli4_params.sli_family;
600 
601 	if (phba->sli_rev < LPFC_SLI_REV4)
602 		len = snprintf(buf, PAGE_SIZE, "%s, sli-%d\n",
603 			       fwrev, phba->sli_rev);
604 	else
605 		len = snprintf(buf, PAGE_SIZE, "%s, sli-%d:%d:%x\n",
606 			       fwrev, phba->sli_rev, if_type, sli_family);
607 
608 	return len;
609 }
610 
611 /**
612  * lpfc_hdw_show - Return the jedec information about the hba
613  * @dev: class converted to a Scsi_host structure.
614  * @attr: device attribute, not used.
615  * @buf: on return contains the scsi vpd program type.
616  *
617  * Returns: size of formatted string.
618  **/
619 static ssize_t
620 lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf)
621 {
622 	char hdw[9];
623 	struct Scsi_Host  *shost = class_to_shost(dev);
624 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
625 	struct lpfc_hba   *phba = vport->phba;
626 	lpfc_vpd_t *vp = &phba->vpd;
627 
628 	lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
629 	return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
630 }
631 
632 /**
633  * lpfc_option_rom_version_show - Return the adapter ROM FCode version
634  * @dev: class converted to a Scsi_host structure.
635  * @attr: device attribute, not used.
636  * @buf: on return contains the ROM and FCode ascii strings.
637  *
638  * Returns: size of formatted string.
639  **/
640 static ssize_t
641 lpfc_option_rom_version_show(struct device *dev, struct device_attribute *attr,
642 			     char *buf)
643 {
644 	struct Scsi_Host  *shost = class_to_shost(dev);
645 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
646 	struct lpfc_hba   *phba = vport->phba;
647 	char fwrev[FW_REV_STR_SIZE];
648 
649 	if (phba->sli_rev < LPFC_SLI_REV4)
650 		return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
651 
652 	lpfc_decode_firmware_rev(phba, fwrev, 1);
653 	return snprintf(buf, PAGE_SIZE, "%s\n", fwrev);
654 }
655 
656 /**
657  * lpfc_state_show - Return the link state of the port
658  * @dev: class converted to a Scsi_host structure.
659  * @attr: device attribute, not used.
660  * @buf: on return contains text describing the state of the link.
661  *
662  * Notes:
663  * The switch statement has no default so zero will be returned.
664  *
665  * Returns: size of formatted string.
666  **/
667 static ssize_t
668 lpfc_link_state_show(struct device *dev, struct device_attribute *attr,
669 		     char *buf)
670 {
671 	struct Scsi_Host  *shost = class_to_shost(dev);
672 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
673 	struct lpfc_hba   *phba = vport->phba;
674 	int  len = 0;
675 
676 	switch (phba->link_state) {
677 	case LPFC_LINK_UNKNOWN:
678 	case LPFC_WARM_START:
679 	case LPFC_INIT_START:
680 	case LPFC_INIT_MBX_CMDS:
681 	case LPFC_LINK_DOWN:
682 	case LPFC_HBA_ERROR:
683 		if (phba->hba_flag & LINK_DISABLED)
684 			len += snprintf(buf + len, PAGE_SIZE-len,
685 				"Link Down - User disabled\n");
686 		else
687 			len += snprintf(buf + len, PAGE_SIZE-len,
688 				"Link Down\n");
689 		break;
690 	case LPFC_LINK_UP:
691 	case LPFC_CLEAR_LA:
692 	case LPFC_HBA_READY:
693 		len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - ");
694 
695 		switch (vport->port_state) {
696 		case LPFC_LOCAL_CFG_LINK:
697 			len += snprintf(buf + len, PAGE_SIZE-len,
698 					"Configuring Link\n");
699 			break;
700 		case LPFC_FDISC:
701 		case LPFC_FLOGI:
702 		case LPFC_FABRIC_CFG_LINK:
703 		case LPFC_NS_REG:
704 		case LPFC_NS_QRY:
705 		case LPFC_BUILD_DISC_LIST:
706 		case LPFC_DISC_AUTH:
707 			len += snprintf(buf + len, PAGE_SIZE - len,
708 					"Discovery\n");
709 			break;
710 		case LPFC_VPORT_READY:
711 			len += snprintf(buf + len, PAGE_SIZE - len, "Ready\n");
712 			break;
713 
714 		case LPFC_VPORT_FAILED:
715 			len += snprintf(buf + len, PAGE_SIZE - len, "Failed\n");
716 			break;
717 
718 		case LPFC_VPORT_UNKNOWN:
719 			len += snprintf(buf + len, PAGE_SIZE - len,
720 					"Unknown\n");
721 			break;
722 		}
723 		if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
724 			len += snprintf(buf + len, PAGE_SIZE-len,
725 					"   Menlo Maint Mode\n");
726 		else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
727 			if (vport->fc_flag & FC_PUBLIC_LOOP)
728 				len += snprintf(buf + len, PAGE_SIZE-len,
729 						"   Public Loop\n");
730 			else
731 				len += snprintf(buf + len, PAGE_SIZE-len,
732 						"   Private Loop\n");
733 		} else {
734 			if (vport->fc_flag & FC_FABRIC)
735 				len += snprintf(buf + len, PAGE_SIZE-len,
736 						"   Fabric\n");
737 			else
738 				len += snprintf(buf + len, PAGE_SIZE-len,
739 						"   Point-2-Point\n");
740 		}
741 	}
742 
743 	return len;
744 }
745 
746 /**
747  * lpfc_sli4_protocol_show - Return the fip mode of the HBA
748  * @dev: class unused variable.
749  * @attr: device attribute, not used.
750  * @buf: on return contains the module description text.
751  *
752  * Returns: size of formatted string.
753  **/
754 static ssize_t
755 lpfc_sli4_protocol_show(struct device *dev, struct device_attribute *attr,
756 			char *buf)
757 {
758 	struct Scsi_Host *shost = class_to_shost(dev);
759 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
760 	struct lpfc_hba *phba = vport->phba;
761 
762 	if (phba->sli_rev < LPFC_SLI_REV4)
763 		return snprintf(buf, PAGE_SIZE, "fc\n");
764 
765 	if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL) {
766 		if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_GE)
767 			return snprintf(buf, PAGE_SIZE, "fcoe\n");
768 		if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)
769 			return snprintf(buf, PAGE_SIZE, "fc\n");
770 	}
771 	return snprintf(buf, PAGE_SIZE, "unknown\n");
772 }
773 
774 /**
775  * lpfc_oas_supported_show - Return whether or not Optimized Access Storage
776  *			    (OAS) is supported.
777  * @dev: class unused variable.
778  * @attr: device attribute, not used.
779  * @buf: on return contains the module description text.
780  *
781  * Returns: size of formatted string.
782  **/
783 static ssize_t
784 lpfc_oas_supported_show(struct device *dev, struct device_attribute *attr,
785 			char *buf)
786 {
787 	struct Scsi_Host *shost = class_to_shost(dev);
788 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
789 	struct lpfc_hba *phba = vport->phba;
790 
791 	return snprintf(buf, PAGE_SIZE, "%d\n",
792 			phba->sli4_hba.pc_sli4_params.oas_supported);
793 }
794 
795 /**
796  * lpfc_link_state_store - Transition the link_state on an HBA port
797  * @dev: class device that is converted into a Scsi_host.
798  * @attr: device attribute, not used.
799  * @buf: one or more lpfc_polling_flags values.
800  * @count: not used.
801  *
802  * Returns:
803  * -EINVAL if the buffer is not "up" or "down"
804  * return from link state change function if non-zero
805  * length of the buf on success
806  **/
807 static ssize_t
808 lpfc_link_state_store(struct device *dev, struct device_attribute *attr,
809 		const char *buf, size_t count)
810 {
811 	struct Scsi_Host  *shost = class_to_shost(dev);
812 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
813 	struct lpfc_hba   *phba = vport->phba;
814 
815 	int status = -EINVAL;
816 
817 	if ((strncmp(buf, "up", sizeof("up") - 1) == 0) &&
818 			(phba->link_state == LPFC_LINK_DOWN))
819 		status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
820 	else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) &&
821 			(phba->link_state >= LPFC_LINK_UP))
822 		status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT);
823 
824 	if (status == 0)
825 		return strlen(buf);
826 	else
827 		return status;
828 }
829 
830 /**
831  * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports
832  * @dev: class device that is converted into a Scsi_host.
833  * @attr: device attribute, not used.
834  * @buf: on return contains the sum of fc mapped and unmapped.
835  *
836  * Description:
837  * Returns the ascii text number of the sum of the fc mapped and unmapped
838  * vport counts.
839  *
840  * Returns: size of formatted string.
841  **/
842 static ssize_t
843 lpfc_num_discovered_ports_show(struct device *dev,
844 			       struct device_attribute *attr, char *buf)
845 {
846 	struct Scsi_Host  *shost = class_to_shost(dev);
847 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
848 
849 	return snprintf(buf, PAGE_SIZE, "%d\n",
850 			vport->fc_map_cnt + vport->fc_unmap_cnt);
851 }
852 
853 /**
854  * lpfc_issue_lip - Misnomer, name carried over from long ago
855  * @shost: Scsi_Host pointer.
856  *
857  * Description:
858  * Bring the link down gracefully then re-init the link. The firmware will
859  * re-init the fiber channel interface as required. Does not issue a LIP.
860  *
861  * Returns:
862  * -EPERM port offline or management commands are being blocked
863  * -ENOMEM cannot allocate memory for the mailbox command
864  * -EIO error sending the mailbox command
865  * zero for success
866  **/
867 static int
868 lpfc_issue_lip(struct Scsi_Host *shost)
869 {
870 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
871 	struct lpfc_hba   *phba = vport->phba;
872 	LPFC_MBOXQ_t *pmboxq;
873 	int mbxstatus = MBXERR_ERROR;
874 
875 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
876 	    (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
877 		return -EPERM;
878 
879 	pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
880 
881 	if (!pmboxq)
882 		return -ENOMEM;
883 
884 	memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
885 	pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
886 	pmboxq->u.mb.mbxOwner = OWN_HOST;
887 
888 	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
889 
890 	if ((mbxstatus == MBX_SUCCESS) &&
891 	    (pmboxq->u.mb.mbxStatus == 0 ||
892 	     pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
893 		memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
894 		lpfc_init_link(phba, pmboxq, phba->cfg_topology,
895 			       phba->cfg_link_speed);
896 		mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
897 						     phba->fc_ratov * 2);
898 		if ((mbxstatus == MBX_SUCCESS) &&
899 		    (pmboxq->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
900 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
901 					"2859 SLI authentication is required "
902 					"for INIT_LINK but has not done yet\n");
903 	}
904 
905 	lpfc_set_loopback_flag(phba);
906 	if (mbxstatus != MBX_TIMEOUT)
907 		mempool_free(pmboxq, phba->mbox_mem_pool);
908 
909 	if (mbxstatus == MBXERR_ERROR)
910 		return -EIO;
911 
912 	return 0;
913 }
914 
915 int
916 lpfc_emptyq_wait(struct lpfc_hba *phba, struct list_head *q, spinlock_t *lock)
917 {
918 	int cnt = 0;
919 
920 	spin_lock_irq(lock);
921 	while (!list_empty(q)) {
922 		spin_unlock_irq(lock);
923 		msleep(20);
924 		if (cnt++ > 250) {  /* 5 secs */
925 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
926 					"0466 %s %s\n",
927 					"Outstanding IO when ",
928 					"bringing Adapter offline\n");
929 				return 0;
930 		}
931 		spin_lock_irq(lock);
932 	}
933 	spin_unlock_irq(lock);
934 	return 1;
935 }
936 
937 /**
938  * lpfc_do_offline - Issues a mailbox command to bring the link down
939  * @phba: lpfc_hba pointer.
940  * @type: LPFC_EVT_OFFLINE, LPFC_EVT_WARM_START, LPFC_EVT_KILL.
941  *
942  * Notes:
943  * Assumes any error from lpfc_do_offline() will be negative.
944  * Can wait up to 5 seconds for the port ring buffers count
945  * to reach zero, prints a warning if it is not zero and continues.
946  * lpfc_workq_post_event() returns a non-zero return code if call fails.
947  *
948  * Returns:
949  * -EIO error posting the event
950  * zero for success
951  **/
952 static int
953 lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
954 {
955 	struct completion online_compl;
956 	struct lpfc_queue *qp = NULL;
957 	struct lpfc_sli_ring *pring;
958 	struct lpfc_sli *psli;
959 	int status = 0;
960 	int i;
961 	int rc;
962 
963 	init_completion(&online_compl);
964 	rc = lpfc_workq_post_event(phba, &status, &online_compl,
965 			      LPFC_EVT_OFFLINE_PREP);
966 	if (rc == 0)
967 		return -ENOMEM;
968 
969 	wait_for_completion(&online_compl);
970 
971 	if (status != 0)
972 		return -EIO;
973 
974 	psli = &phba->sli;
975 
976 	/* Wait a little for things to settle down, but not
977 	 * long enough for dev loss timeout to expire.
978 	 */
979 	if (phba->sli_rev != LPFC_SLI_REV4) {
980 		for (i = 0; i < psli->num_rings; i++) {
981 			pring = &psli->sli3_ring[i];
982 			if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
983 					      &phba->hbalock))
984 				goto out;
985 		}
986 	} else {
987 		list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
988 			pring = qp->pring;
989 			if (!pring)
990 				continue;
991 			if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
992 					      &pring->ring_lock))
993 				goto out;
994 		}
995 	}
996 out:
997 	init_completion(&online_compl);
998 	rc = lpfc_workq_post_event(phba, &status, &online_compl, type);
999 	if (rc == 0)
1000 		return -ENOMEM;
1001 
1002 	wait_for_completion(&online_compl);
1003 
1004 	if (status != 0)
1005 		return -EIO;
1006 
1007 	return 0;
1008 }
1009 
1010 /**
1011  * lpfc_selective_reset - Offline then onlines the port
1012  * @phba: lpfc_hba pointer.
1013  *
1014  * Description:
1015  * If the port is configured to allow a reset then the hba is brought
1016  * offline then online.
1017  *
1018  * Notes:
1019  * Assumes any error from lpfc_do_offline() will be negative.
1020  * Do not make this function static.
1021  *
1022  * Returns:
1023  * lpfc_do_offline() return code if not zero
1024  * -EIO reset not configured or error posting the event
1025  * zero for success
1026  **/
1027 int
1028 lpfc_selective_reset(struct lpfc_hba *phba)
1029 {
1030 	struct completion online_compl;
1031 	int status = 0;
1032 	int rc;
1033 
1034 	if (!phba->cfg_enable_hba_reset)
1035 		return -EACCES;
1036 
1037 	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE)) {
1038 		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1039 
1040 		if (status != 0)
1041 			return status;
1042 	}
1043 
1044 	init_completion(&online_compl);
1045 	rc = lpfc_workq_post_event(phba, &status, &online_compl,
1046 			      LPFC_EVT_ONLINE);
1047 	if (rc == 0)
1048 		return -ENOMEM;
1049 
1050 	wait_for_completion(&online_compl);
1051 
1052 	if (status != 0)
1053 		return -EIO;
1054 
1055 	return 0;
1056 }
1057 
1058 /**
1059  * lpfc_issue_reset - Selectively resets an adapter
1060  * @dev: class device that is converted into a Scsi_host.
1061  * @attr: device attribute, not used.
1062  * @buf: containing the string "selective".
1063  * @count: unused variable.
1064  *
1065  * Description:
1066  * If the buf contains the string "selective" then lpfc_selective_reset()
1067  * is called to perform the reset.
1068  *
1069  * Notes:
1070  * Assumes any error from lpfc_selective_reset() will be negative.
1071  * If lpfc_selective_reset() returns zero then the length of the buffer
1072  * is returned which indicates success
1073  *
1074  * Returns:
1075  * -EINVAL if the buffer does not contain the string "selective"
1076  * length of buf if lpfc-selective_reset() if the call succeeds
1077  * return value of lpfc_selective_reset() if the call fails
1078 **/
1079 static ssize_t
1080 lpfc_issue_reset(struct device *dev, struct device_attribute *attr,
1081 		 const char *buf, size_t count)
1082 {
1083 	struct Scsi_Host  *shost = class_to_shost(dev);
1084 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1085 	struct lpfc_hba   *phba = vport->phba;
1086 	int status = -EINVAL;
1087 
1088 	if (!phba->cfg_enable_hba_reset)
1089 		return -EACCES;
1090 
1091 	if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
1092 		status = phba->lpfc_selective_reset(phba);
1093 
1094 	if (status == 0)
1095 		return strlen(buf);
1096 	else
1097 		return status;
1098 }
1099 
1100 /**
1101  * lpfc_sli4_pdev_status_reg_wait - Wait for pdev status register for readyness
1102  * @phba: lpfc_hba pointer.
1103  *
1104  * Description:
1105  * SLI4 interface type-2 device to wait on the sliport status register for
1106  * the readyness after performing a firmware reset.
1107  *
1108  * Returns:
1109  * zero for success, -EPERM when port does not have privilege to perform the
1110  * reset, -EIO when port timeout from recovering from the reset.
1111  *
1112  * Note:
1113  * As the caller will interpret the return code by value, be careful in making
1114  * change or addition to return codes.
1115  **/
1116 int
1117 lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba)
1118 {
1119 	struct lpfc_register portstat_reg = {0};
1120 	int i;
1121 
1122 	msleep(100);
1123 	lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
1124 		   &portstat_reg.word0);
1125 
1126 	/* verify if privileged for the request operation */
1127 	if (!bf_get(lpfc_sliport_status_rn, &portstat_reg) &&
1128 	    !bf_get(lpfc_sliport_status_err, &portstat_reg))
1129 		return -EPERM;
1130 
1131 	/* wait for the SLI port firmware ready after firmware reset */
1132 	for (i = 0; i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT; i++) {
1133 		msleep(10);
1134 		lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
1135 			   &portstat_reg.word0);
1136 		if (!bf_get(lpfc_sliport_status_err, &portstat_reg))
1137 			continue;
1138 		if (!bf_get(lpfc_sliport_status_rn, &portstat_reg))
1139 			continue;
1140 		if (!bf_get(lpfc_sliport_status_rdy, &portstat_reg))
1141 			continue;
1142 		break;
1143 	}
1144 
1145 	if (i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT)
1146 		return 0;
1147 	else
1148 		return -EIO;
1149 }
1150 
1151 /**
1152  * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc
1153  * @phba: lpfc_hba pointer.
1154  *
1155  * Description:
1156  * Request SLI4 interface type-2 device to perform a physical register set
1157  * access.
1158  *
1159  * Returns:
1160  * zero for success
1161  **/
1162 static ssize_t
1163 lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode)
1164 {
1165 	struct completion online_compl;
1166 	struct pci_dev *pdev = phba->pcidev;
1167 	uint32_t before_fc_flag;
1168 	uint32_t sriov_nr_virtfn;
1169 	uint32_t reg_val;
1170 	int status = 0, rc = 0;
1171 	int job_posted = 1, sriov_err;
1172 
1173 	if (!phba->cfg_enable_hba_reset)
1174 		return -EACCES;
1175 
1176 	if ((phba->sli_rev < LPFC_SLI_REV4) ||
1177 	    (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
1178 	     LPFC_SLI_INTF_IF_TYPE_2))
1179 		return -EPERM;
1180 
1181 	/* Keep state if we need to restore back */
1182 	before_fc_flag = phba->pport->fc_flag;
1183 	sriov_nr_virtfn = phba->cfg_sriov_nr_virtfn;
1184 
1185 	/* Disable SR-IOV virtual functions if enabled */
1186 	if (phba->cfg_sriov_nr_virtfn) {
1187 		pci_disable_sriov(pdev);
1188 		phba->cfg_sriov_nr_virtfn = 0;
1189 	}
1190 
1191 	if (opcode == LPFC_FW_DUMP)
1192 		phba->hba_flag |= HBA_FW_DUMP_OP;
1193 
1194 	status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1195 
1196 	if (status != 0) {
1197 		phba->hba_flag &= ~HBA_FW_DUMP_OP;
1198 		return status;
1199 	}
1200 
1201 	/* wait for the device to be quiesced before firmware reset */
1202 	msleep(100);
1203 
1204 	reg_val = readl(phba->sli4_hba.conf_regs_memmap_p +
1205 			LPFC_CTL_PDEV_CTL_OFFSET);
1206 
1207 	if (opcode == LPFC_FW_DUMP)
1208 		reg_val |= LPFC_FW_DUMP_REQUEST;
1209 	else if (opcode == LPFC_FW_RESET)
1210 		reg_val |= LPFC_CTL_PDEV_CTL_FRST;
1211 	else if (opcode == LPFC_DV_RESET)
1212 		reg_val |= LPFC_CTL_PDEV_CTL_DRST;
1213 
1214 	writel(reg_val, phba->sli4_hba.conf_regs_memmap_p +
1215 	       LPFC_CTL_PDEV_CTL_OFFSET);
1216 	/* flush */
1217 	readl(phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET);
1218 
1219 	/* delay driver action following IF_TYPE_2 reset */
1220 	rc = lpfc_sli4_pdev_status_reg_wait(phba);
1221 
1222 	if (rc == -EPERM) {
1223 		/* no privilege for reset */
1224 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1225 				"3150 No privilege to perform the requested "
1226 				"access: x%x\n", reg_val);
1227 	} else if (rc == -EIO) {
1228 		/* reset failed, there is nothing more we can do */
1229 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1230 				"3153 Fail to perform the requested "
1231 				"access: x%x\n", reg_val);
1232 		return rc;
1233 	}
1234 
1235 	/* keep the original port state */
1236 	if (before_fc_flag & FC_OFFLINE_MODE)
1237 		goto out;
1238 
1239 	init_completion(&online_compl);
1240 	job_posted = lpfc_workq_post_event(phba, &status, &online_compl,
1241 					   LPFC_EVT_ONLINE);
1242 	if (!job_posted)
1243 		goto out;
1244 
1245 	wait_for_completion(&online_compl);
1246 
1247 out:
1248 	/* in any case, restore the virtual functions enabled as before */
1249 	if (sriov_nr_virtfn) {
1250 		sriov_err =
1251 			lpfc_sli_probe_sriov_nr_virtfn(phba, sriov_nr_virtfn);
1252 		if (!sriov_err)
1253 			phba->cfg_sriov_nr_virtfn = sriov_nr_virtfn;
1254 	}
1255 
1256 	/* return proper error code */
1257 	if (!rc) {
1258 		if (!job_posted)
1259 			rc = -ENOMEM;
1260 		else if (status)
1261 			rc = -EIO;
1262 	}
1263 	return rc;
1264 }
1265 
1266 /**
1267  * lpfc_nport_evt_cnt_show - Return the number of nport events
1268  * @dev: class device that is converted into a Scsi_host.
1269  * @attr: device attribute, not used.
1270  * @buf: on return contains the ascii number of nport events.
1271  *
1272  * Returns: size of formatted string.
1273  **/
1274 static ssize_t
1275 lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr,
1276 			char *buf)
1277 {
1278 	struct Scsi_Host  *shost = class_to_shost(dev);
1279 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1280 	struct lpfc_hba   *phba = vport->phba;
1281 
1282 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
1283 }
1284 
1285 /**
1286  * lpfc_board_mode_show - Return the state of the board
1287  * @dev: class device that is converted into a Scsi_host.
1288  * @attr: device attribute, not used.
1289  * @buf: on return contains the state of the adapter.
1290  *
1291  * Returns: size of formatted string.
1292  **/
1293 static ssize_t
1294 lpfc_board_mode_show(struct device *dev, struct device_attribute *attr,
1295 		     char *buf)
1296 {
1297 	struct Scsi_Host  *shost = class_to_shost(dev);
1298 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1299 	struct lpfc_hba   *phba = vport->phba;
1300 	char  * state;
1301 
1302 	if (phba->link_state == LPFC_HBA_ERROR)
1303 		state = "error";
1304 	else if (phba->link_state == LPFC_WARM_START)
1305 		state = "warm start";
1306 	else if (phba->link_state == LPFC_INIT_START)
1307 		state = "offline";
1308 	else
1309 		state = "online";
1310 
1311 	return snprintf(buf, PAGE_SIZE, "%s\n", state);
1312 }
1313 
1314 /**
1315  * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state
1316  * @dev: class device that is converted into a Scsi_host.
1317  * @attr: device attribute, not used.
1318  * @buf: containing one of the strings "online", "offline", "warm" or "error".
1319  * @count: unused variable.
1320  *
1321  * Returns:
1322  * -EACCES if enable hba reset not enabled
1323  * -EINVAL if the buffer does not contain a valid string (see above)
1324  * -EIO if lpfc_workq_post_event() or lpfc_do_offline() fails
1325  * buf length greater than zero indicates success
1326  **/
1327 static ssize_t
1328 lpfc_board_mode_store(struct device *dev, struct device_attribute *attr,
1329 		      const char *buf, size_t count)
1330 {
1331 	struct Scsi_Host  *shost = class_to_shost(dev);
1332 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1333 	struct lpfc_hba   *phba = vport->phba;
1334 	struct completion online_compl;
1335 	char *board_mode_str = NULL;
1336 	int status = 0;
1337 	int rc;
1338 
1339 	if (!phba->cfg_enable_hba_reset) {
1340 		status = -EACCES;
1341 		goto board_mode_out;
1342 	}
1343 
1344 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1345 			 "3050 lpfc_board_mode set to %s\n", buf);
1346 
1347 	init_completion(&online_compl);
1348 
1349 	if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
1350 		rc = lpfc_workq_post_event(phba, &status, &online_compl,
1351 				      LPFC_EVT_ONLINE);
1352 		if (rc == 0) {
1353 			status = -ENOMEM;
1354 			goto board_mode_out;
1355 		}
1356 		wait_for_completion(&online_compl);
1357 		if (status)
1358 			status = -EIO;
1359 	} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
1360 		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1361 	else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
1362 		if (phba->sli_rev == LPFC_SLI_REV4)
1363 			status = -EINVAL;
1364 		else
1365 			status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
1366 	else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
1367 		if (phba->sli_rev == LPFC_SLI_REV4)
1368 			status = -EINVAL;
1369 		else
1370 			status = lpfc_do_offline(phba, LPFC_EVT_KILL);
1371 	else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0)
1372 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_DUMP);
1373 	else if (strncmp(buf, "fw_reset", sizeof("fw_reset") - 1) == 0)
1374 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_RESET);
1375 	else if (strncmp(buf, "dv_reset", sizeof("dv_reset") - 1) == 0)
1376 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_DV_RESET);
1377 	else
1378 		status = -EINVAL;
1379 
1380 board_mode_out:
1381 	if (!status)
1382 		return strlen(buf);
1383 	else {
1384 		board_mode_str = strchr(buf, '\n');
1385 		if (board_mode_str)
1386 			*board_mode_str = '\0';
1387 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1388 				 "3097 Failed \"%s\", status(%d), "
1389 				 "fc_flag(x%x)\n",
1390 				 buf, status, phba->pport->fc_flag);
1391 		return status;
1392 	}
1393 }
1394 
1395 /**
1396  * lpfc_get_hba_info - Return various bits of informaton about the adapter
1397  * @phba: pointer to the adapter structure.
1398  * @mxri: max xri count.
1399  * @axri: available xri count.
1400  * @mrpi: max rpi count.
1401  * @arpi: available rpi count.
1402  * @mvpi: max vpi count.
1403  * @avpi: available vpi count.
1404  *
1405  * Description:
1406  * If an integer pointer for an count is not null then the value for the
1407  * count is returned.
1408  *
1409  * Returns:
1410  * zero on error
1411  * one for success
1412  **/
1413 static int
1414 lpfc_get_hba_info(struct lpfc_hba *phba,
1415 		  uint32_t *mxri, uint32_t *axri,
1416 		  uint32_t *mrpi, uint32_t *arpi,
1417 		  uint32_t *mvpi, uint32_t *avpi)
1418 {
1419 	struct lpfc_mbx_read_config *rd_config;
1420 	LPFC_MBOXQ_t *pmboxq;
1421 	MAILBOX_t *pmb;
1422 	int rc = 0;
1423 	uint32_t max_vpi;
1424 
1425 	/*
1426 	 * prevent udev from issuing mailbox commands until the port is
1427 	 * configured.
1428 	 */
1429 	if (phba->link_state < LPFC_LINK_DOWN ||
1430 	    !phba->mbox_mem_pool ||
1431 	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
1432 		return 0;
1433 
1434 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
1435 		return 0;
1436 
1437 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1438 	if (!pmboxq)
1439 		return 0;
1440 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1441 
1442 	pmb = &pmboxq->u.mb;
1443 	pmb->mbxCommand = MBX_READ_CONFIG;
1444 	pmb->mbxOwner = OWN_HOST;
1445 	pmboxq->context1 = NULL;
1446 
1447 	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
1448 		rc = MBX_NOT_FINISHED;
1449 	else
1450 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1451 
1452 	if (rc != MBX_SUCCESS) {
1453 		if (rc != MBX_TIMEOUT)
1454 			mempool_free(pmboxq, phba->mbox_mem_pool);
1455 		return 0;
1456 	}
1457 
1458 	if (phba->sli_rev == LPFC_SLI_REV4) {
1459 		rd_config = &pmboxq->u.mqe.un.rd_config;
1460 		if (mrpi)
1461 			*mrpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
1462 		if (arpi)
1463 			*arpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config) -
1464 					phba->sli4_hba.max_cfg_param.rpi_used;
1465 		if (mxri)
1466 			*mxri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
1467 		if (axri)
1468 			*axri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config) -
1469 					phba->sli4_hba.max_cfg_param.xri_used;
1470 
1471 		/* Account for differences with SLI-3.  Get vpi count from
1472 		 * mailbox data and subtract one for max vpi value.
1473 		 */
1474 		max_vpi = (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) > 0) ?
1475 			(bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) - 1) : 0;
1476 
1477 		if (mvpi)
1478 			*mvpi = max_vpi;
1479 		if (avpi)
1480 			*avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used;
1481 	} else {
1482 		if (mrpi)
1483 			*mrpi = pmb->un.varRdConfig.max_rpi;
1484 		if (arpi)
1485 			*arpi = pmb->un.varRdConfig.avail_rpi;
1486 		if (mxri)
1487 			*mxri = pmb->un.varRdConfig.max_xri;
1488 		if (axri)
1489 			*axri = pmb->un.varRdConfig.avail_xri;
1490 		if (mvpi)
1491 			*mvpi = pmb->un.varRdConfig.max_vpi;
1492 		if (avpi)
1493 			*avpi = pmb->un.varRdConfig.avail_vpi;
1494 	}
1495 
1496 	mempool_free(pmboxq, phba->mbox_mem_pool);
1497 	return 1;
1498 }
1499 
1500 /**
1501  * lpfc_max_rpi_show - Return maximum rpi
1502  * @dev: class device that is converted into a Scsi_host.
1503  * @attr: device attribute, not used.
1504  * @buf: on return contains the maximum rpi count in decimal or "Unknown".
1505  *
1506  * Description:
1507  * Calls lpfc_get_hba_info() asking for just the mrpi count.
1508  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1509  * to "Unknown" and the buffer length is returned, therefore the caller
1510  * must check for "Unknown" in the buffer to detect a failure.
1511  *
1512  * Returns: size of formatted string.
1513  **/
1514 static ssize_t
1515 lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr,
1516 		  char *buf)
1517 {
1518 	struct Scsi_Host  *shost = class_to_shost(dev);
1519 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1520 	struct lpfc_hba   *phba = vport->phba;
1521 	uint32_t cnt;
1522 
1523 	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL))
1524 		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
1525 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1526 }
1527 
1528 /**
1529  * lpfc_used_rpi_show - Return maximum rpi minus available rpi
1530  * @dev: class device that is converted into a Scsi_host.
1531  * @attr: device attribute, not used.
1532  * @buf: containing the used rpi count in decimal or "Unknown".
1533  *
1534  * Description:
1535  * Calls lpfc_get_hba_info() asking for just the mrpi and arpi counts.
1536  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1537  * to "Unknown" and the buffer length is returned, therefore the caller
1538  * must check for "Unknown" in the buffer to detect a failure.
1539  *
1540  * Returns: size of formatted string.
1541  **/
1542 static ssize_t
1543 lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr,
1544 		   char *buf)
1545 {
1546 	struct Scsi_Host  *shost = class_to_shost(dev);
1547 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1548 	struct lpfc_hba   *phba = vport->phba;
1549 	uint32_t cnt, acnt;
1550 
1551 	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL))
1552 		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
1553 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1554 }
1555 
1556 /**
1557  * lpfc_max_xri_show - Return maximum xri
1558  * @dev: class device that is converted into a Scsi_host.
1559  * @attr: device attribute, not used.
1560  * @buf: on return contains the maximum xri count in decimal or "Unknown".
1561  *
1562  * Description:
1563  * Calls lpfc_get_hba_info() asking for just the mrpi count.
1564  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1565  * to "Unknown" and the buffer length is returned, therefore the caller
1566  * must check for "Unknown" in the buffer to detect a failure.
1567  *
1568  * Returns: size of formatted string.
1569  **/
1570 static ssize_t
1571 lpfc_max_xri_show(struct device *dev, struct device_attribute *attr,
1572 		  char *buf)
1573 {
1574 	struct Scsi_Host  *shost = class_to_shost(dev);
1575 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1576 	struct lpfc_hba   *phba = vport->phba;
1577 	uint32_t cnt;
1578 
1579 	if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL))
1580 		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
1581 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1582 }
1583 
1584 /**
1585  * lpfc_used_xri_show - Return maximum xpi minus the available xpi
1586  * @dev: class device that is converted into a Scsi_host.
1587  * @attr: device attribute, not used.
1588  * @buf: on return contains the used xri count in decimal or "Unknown".
1589  *
1590  * Description:
1591  * Calls lpfc_get_hba_info() asking for just the mxri and axri counts.
1592  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1593  * to "Unknown" and the buffer length is returned, therefore the caller
1594  * must check for "Unknown" in the buffer to detect a failure.
1595  *
1596  * Returns: size of formatted string.
1597  **/
1598 static ssize_t
1599 lpfc_used_xri_show(struct device *dev, struct device_attribute *attr,
1600 		   char *buf)
1601 {
1602 	struct Scsi_Host  *shost = class_to_shost(dev);
1603 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1604 	struct lpfc_hba   *phba = vport->phba;
1605 	uint32_t cnt, acnt;
1606 
1607 	if (lpfc_get_hba_info(phba, &cnt, &acnt, NULL, NULL, NULL, NULL))
1608 		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
1609 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1610 }
1611 
1612 /**
1613  * lpfc_max_vpi_show - Return maximum vpi
1614  * @dev: class device that is converted into a Scsi_host.
1615  * @attr: device attribute, not used.
1616  * @buf: on return contains the maximum vpi count in decimal or "Unknown".
1617  *
1618  * Description:
1619  * Calls lpfc_get_hba_info() asking for just the mvpi count.
1620  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1621  * to "Unknown" and the buffer length is returned, therefore the caller
1622  * must check for "Unknown" in the buffer to detect a failure.
1623  *
1624  * Returns: size of formatted string.
1625  **/
1626 static ssize_t
1627 lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr,
1628 		  char *buf)
1629 {
1630 	struct Scsi_Host  *shost = class_to_shost(dev);
1631 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1632 	struct lpfc_hba   *phba = vport->phba;
1633 	uint32_t cnt;
1634 
1635 	if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, NULL))
1636 		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
1637 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1638 }
1639 
1640 /**
1641  * lpfc_used_vpi_show - Return maximum vpi minus the available vpi
1642  * @dev: class device that is converted into a Scsi_host.
1643  * @attr: device attribute, not used.
1644  * @buf: on return contains the used vpi count in decimal or "Unknown".
1645  *
1646  * Description:
1647  * Calls lpfc_get_hba_info() asking for just the mvpi and avpi counts.
1648  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1649  * to "Unknown" and the buffer length is returned, therefore the caller
1650  * must check for "Unknown" in the buffer to detect a failure.
1651  *
1652  * Returns: size of formatted string.
1653  **/
1654 static ssize_t
1655 lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr,
1656 		   char *buf)
1657 {
1658 	struct Scsi_Host  *shost = class_to_shost(dev);
1659 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1660 	struct lpfc_hba   *phba = vport->phba;
1661 	uint32_t cnt, acnt;
1662 
1663 	if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, &acnt))
1664 		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
1665 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1666 }
1667 
1668 /**
1669  * lpfc_npiv_info_show - Return text about NPIV support for the adapter
1670  * @dev: class device that is converted into a Scsi_host.
1671  * @attr: device attribute, not used.
1672  * @buf: text that must be interpreted to determine if npiv is supported.
1673  *
1674  * Description:
1675  * Buffer will contain text indicating npiv is not suppoerted on the port,
1676  * the port is an NPIV physical port, or it is an npiv virtual port with
1677  * the id of the vport.
1678  *
1679  * Returns: size of formatted string.
1680  **/
1681 static ssize_t
1682 lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr,
1683 		    char *buf)
1684 {
1685 	struct Scsi_Host  *shost = class_to_shost(dev);
1686 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1687 	struct lpfc_hba   *phba = vport->phba;
1688 
1689 	if (!(phba->max_vpi))
1690 		return snprintf(buf, PAGE_SIZE, "NPIV Not Supported\n");
1691 	if (vport->port_type == LPFC_PHYSICAL_PORT)
1692 		return snprintf(buf, PAGE_SIZE, "NPIV Physical\n");
1693 	return snprintf(buf, PAGE_SIZE, "NPIV Virtual (VPI %d)\n", vport->vpi);
1694 }
1695 
1696 /**
1697  * lpfc_poll_show - Return text about poll support for the adapter
1698  * @dev: class device that is converted into a Scsi_host.
1699  * @attr: device attribute, not used.
1700  * @buf: on return contains the cfg_poll in hex.
1701  *
1702  * Notes:
1703  * cfg_poll should be a lpfc_polling_flags type.
1704  *
1705  * Returns: size of formatted string.
1706  **/
1707 static ssize_t
1708 lpfc_poll_show(struct device *dev, struct device_attribute *attr,
1709 	       char *buf)
1710 {
1711 	struct Scsi_Host  *shost = class_to_shost(dev);
1712 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1713 	struct lpfc_hba   *phba = vport->phba;
1714 
1715 	return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
1716 }
1717 
1718 /**
1719  * lpfc_poll_store - Set the value of cfg_poll for the adapter
1720  * @dev: class device that is converted into a Scsi_host.
1721  * @attr: device attribute, not used.
1722  * @buf: one or more lpfc_polling_flags values.
1723  * @count: not used.
1724  *
1725  * Notes:
1726  * buf contents converted to integer and checked for a valid value.
1727  *
1728  * Returns:
1729  * -EINVAL if the buffer connot be converted or is out of range
1730  * length of the buf on success
1731  **/
1732 static ssize_t
1733 lpfc_poll_store(struct device *dev, struct device_attribute *attr,
1734 		const char *buf, size_t count)
1735 {
1736 	struct Scsi_Host  *shost = class_to_shost(dev);
1737 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1738 	struct lpfc_hba   *phba = vport->phba;
1739 	uint32_t creg_val;
1740 	uint32_t old_val;
1741 	int val=0;
1742 
1743 	if (!isdigit(buf[0]))
1744 		return -EINVAL;
1745 
1746 	if (sscanf(buf, "%i", &val) != 1)
1747 		return -EINVAL;
1748 
1749 	if ((val & 0x3) != val)
1750 		return -EINVAL;
1751 
1752 	if (phba->sli_rev == LPFC_SLI_REV4)
1753 		val = 0;
1754 
1755 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1756 		"3051 lpfc_poll changed from %d to %d\n",
1757 		phba->cfg_poll, val);
1758 
1759 	spin_lock_irq(&phba->hbalock);
1760 
1761 	old_val = phba->cfg_poll;
1762 
1763 	if (val & ENABLE_FCP_RING_POLLING) {
1764 		if ((val & DISABLE_FCP_RING_INT) &&
1765 		    !(old_val & DISABLE_FCP_RING_INT)) {
1766 			if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1767 				spin_unlock_irq(&phba->hbalock);
1768 				return -EINVAL;
1769 			}
1770 			creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
1771 			writel(creg_val, phba->HCregaddr);
1772 			readl(phba->HCregaddr); /* flush */
1773 
1774 			lpfc_poll_start_timer(phba);
1775 		}
1776 	} else if (val != 0x0) {
1777 		spin_unlock_irq(&phba->hbalock);
1778 		return -EINVAL;
1779 	}
1780 
1781 	if (!(val & DISABLE_FCP_RING_INT) &&
1782 	    (old_val & DISABLE_FCP_RING_INT))
1783 	{
1784 		spin_unlock_irq(&phba->hbalock);
1785 		del_timer(&phba->fcp_poll_timer);
1786 		spin_lock_irq(&phba->hbalock);
1787 		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1788 			spin_unlock_irq(&phba->hbalock);
1789 			return -EINVAL;
1790 		}
1791 		creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1792 		writel(creg_val, phba->HCregaddr);
1793 		readl(phba->HCregaddr); /* flush */
1794 	}
1795 
1796 	phba->cfg_poll = val;
1797 
1798 	spin_unlock_irq(&phba->hbalock);
1799 
1800 	return strlen(buf);
1801 }
1802 
1803 /**
1804  * lpfc_fips_level_show - Return the current FIPS level for the HBA
1805  * @dev: class unused variable.
1806  * @attr: device attribute, not used.
1807  * @buf: on return contains the module description text.
1808  *
1809  * Returns: size of formatted string.
1810  **/
1811 static ssize_t
1812 lpfc_fips_level_show(struct device *dev,  struct device_attribute *attr,
1813 		     char *buf)
1814 {
1815 	struct Scsi_Host  *shost = class_to_shost(dev);
1816 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1817 	struct lpfc_hba   *phba = vport->phba;
1818 
1819 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_level);
1820 }
1821 
1822 /**
1823  * lpfc_fips_rev_show - Return the FIPS Spec revision for the HBA
1824  * @dev: class unused variable.
1825  * @attr: device attribute, not used.
1826  * @buf: on return contains the module description text.
1827  *
1828  * Returns: size of formatted string.
1829  **/
1830 static ssize_t
1831 lpfc_fips_rev_show(struct device *dev,  struct device_attribute *attr,
1832 		   char *buf)
1833 {
1834 	struct Scsi_Host  *shost = class_to_shost(dev);
1835 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1836 	struct lpfc_hba   *phba = vport->phba;
1837 
1838 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_spec_rev);
1839 }
1840 
1841 /**
1842  * lpfc_dss_show - Return the current state of dss and the configured state
1843  * @dev: class converted to a Scsi_host structure.
1844  * @attr: device attribute, not used.
1845  * @buf: on return contains the formatted text.
1846  *
1847  * Returns: size of formatted string.
1848  **/
1849 static ssize_t
1850 lpfc_dss_show(struct device *dev, struct device_attribute *attr,
1851 	      char *buf)
1852 {
1853 	struct Scsi_Host *shost = class_to_shost(dev);
1854 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1855 	struct lpfc_hba   *phba = vport->phba;
1856 
1857 	return snprintf(buf, PAGE_SIZE, "%s - %sOperational\n",
1858 			(phba->cfg_enable_dss) ? "Enabled" : "Disabled",
1859 			(phba->sli3_options & LPFC_SLI3_DSS_ENABLED) ?
1860 				"" : "Not ");
1861 }
1862 
1863 /**
1864  * lpfc_sriov_hw_max_virtfn_show - Return maximum number of virtual functions
1865  * @dev: class converted to a Scsi_host structure.
1866  * @attr: device attribute, not used.
1867  * @buf: on return contains the formatted support level.
1868  *
1869  * Description:
1870  * Returns the maximum number of virtual functions a physical function can
1871  * support, 0 will be returned if called on virtual function.
1872  *
1873  * Returns: size of formatted string.
1874  **/
1875 static ssize_t
1876 lpfc_sriov_hw_max_virtfn_show(struct device *dev,
1877 			      struct device_attribute *attr,
1878 			      char *buf)
1879 {
1880 	struct Scsi_Host *shost = class_to_shost(dev);
1881 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1882 	struct lpfc_hba *phba = vport->phba;
1883 	uint16_t max_nr_virtfn;
1884 
1885 	max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba);
1886 	return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn);
1887 }
1888 
1889 static inline bool lpfc_rangecheck(uint val, uint min, uint max)
1890 {
1891 	return val >= min && val <= max;
1892 }
1893 
1894 /**
1895  * lpfc_param_show - Return a cfg attribute value in decimal
1896  *
1897  * Description:
1898  * Macro that given an attr e.g. hba_queue_depth expands
1899  * into a function with the name lpfc_hba_queue_depth_show.
1900  *
1901  * lpfc_##attr##_show: Return the decimal value of an adapters cfg_xxx field.
1902  * @dev: class device that is converted into a Scsi_host.
1903  * @attr: device attribute, not used.
1904  * @buf: on return contains the attribute value in decimal.
1905  *
1906  * Returns: size of formatted string.
1907  **/
1908 #define lpfc_param_show(attr)	\
1909 static ssize_t \
1910 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
1911 		   char *buf) \
1912 { \
1913 	struct Scsi_Host  *shost = class_to_shost(dev);\
1914 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1915 	struct lpfc_hba   *phba = vport->phba;\
1916 	return snprintf(buf, PAGE_SIZE, "%d\n",\
1917 			phba->cfg_##attr);\
1918 }
1919 
1920 /**
1921  * lpfc_param_hex_show - Return a cfg attribute value in hex
1922  *
1923  * Description:
1924  * Macro that given an attr e.g. hba_queue_depth expands
1925  * into a function with the name lpfc_hba_queue_depth_show
1926  *
1927  * lpfc_##attr##_show: Return the hex value of an adapters cfg_xxx field.
1928  * @dev: class device that is converted into a Scsi_host.
1929  * @attr: device attribute, not used.
1930  * @buf: on return contains the attribute value in hexadecimal.
1931  *
1932  * Returns: size of formatted string.
1933  **/
1934 #define lpfc_param_hex_show(attr)	\
1935 static ssize_t \
1936 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
1937 		   char *buf) \
1938 { \
1939 	struct Scsi_Host  *shost = class_to_shost(dev);\
1940 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1941 	struct lpfc_hba   *phba = vport->phba;\
1942 	uint val = 0;\
1943 	val = phba->cfg_##attr;\
1944 	return snprintf(buf, PAGE_SIZE, "%#x\n",\
1945 			phba->cfg_##attr);\
1946 }
1947 
1948 /**
1949  * lpfc_param_init - Initializes a cfg attribute
1950  *
1951  * Description:
1952  * Macro that given an attr e.g. hba_queue_depth expands
1953  * into a function with the name lpfc_hba_queue_depth_init. The macro also
1954  * takes a default argument, a minimum and maximum argument.
1955  *
1956  * lpfc_##attr##_init: Initializes an attribute.
1957  * @phba: pointer the the adapter structure.
1958  * @val: integer attribute value.
1959  *
1960  * Validates the min and max values then sets the adapter config field
1961  * accordingly, or uses the default if out of range and prints an error message.
1962  *
1963  * Returns:
1964  * zero on success
1965  * -EINVAL if default used
1966  **/
1967 #define lpfc_param_init(attr, default, minval, maxval)	\
1968 static int \
1969 lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \
1970 { \
1971 	if (lpfc_rangecheck(val, minval, maxval)) {\
1972 		phba->cfg_##attr = val;\
1973 		return 0;\
1974 	}\
1975 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
1976 			"0449 lpfc_"#attr" attribute cannot be set to %d, "\
1977 			"allowed range is ["#minval", "#maxval"]\n", val); \
1978 	phba->cfg_##attr = default;\
1979 	return -EINVAL;\
1980 }
1981 
1982 /**
1983  * lpfc_param_set - Set a cfg attribute value
1984  *
1985  * Description:
1986  * Macro that given an attr e.g. hba_queue_depth expands
1987  * into a function with the name lpfc_hba_queue_depth_set
1988  *
1989  * lpfc_##attr##_set: Sets an attribute value.
1990  * @phba: pointer the the adapter structure.
1991  * @val: integer attribute value.
1992  *
1993  * Description:
1994  * Validates the min and max values then sets the
1995  * adapter config field if in the valid range. prints error message
1996  * and does not set the parameter if invalid.
1997  *
1998  * Returns:
1999  * zero on success
2000  * -EINVAL if val is invalid
2001  **/
2002 #define lpfc_param_set(attr, default, minval, maxval)	\
2003 static int \
2004 lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \
2005 { \
2006 	if (lpfc_rangecheck(val, minval, maxval)) {\
2007 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
2008 			"3052 lpfc_" #attr " changed from %d to %d\n", \
2009 			phba->cfg_##attr, val); \
2010 		phba->cfg_##attr = val;\
2011 		return 0;\
2012 	}\
2013 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
2014 			"0450 lpfc_"#attr" attribute cannot be set to %d, "\
2015 			"allowed range is ["#minval", "#maxval"]\n", val); \
2016 	return -EINVAL;\
2017 }
2018 
2019 /**
2020  * lpfc_param_store - Set a vport attribute value
2021  *
2022  * Description:
2023  * Macro that given an attr e.g. hba_queue_depth expands
2024  * into a function with the name lpfc_hba_queue_depth_store.
2025  *
2026  * lpfc_##attr##_store: Set an sttribute value.
2027  * @dev: class device that is converted into a Scsi_host.
2028  * @attr: device attribute, not used.
2029  * @buf: contains the attribute value in ascii.
2030  * @count: not used.
2031  *
2032  * Description:
2033  * Convert the ascii text number to an integer, then
2034  * use the lpfc_##attr##_set function to set the value.
2035  *
2036  * Returns:
2037  * -EINVAL if val is invalid or lpfc_##attr##_set() fails
2038  * length of buffer upon success.
2039  **/
2040 #define lpfc_param_store(attr)	\
2041 static ssize_t \
2042 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
2043 		    const char *buf, size_t count) \
2044 { \
2045 	struct Scsi_Host  *shost = class_to_shost(dev);\
2046 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2047 	struct lpfc_hba   *phba = vport->phba;\
2048 	uint val = 0;\
2049 	if (!isdigit(buf[0]))\
2050 		return -EINVAL;\
2051 	if (sscanf(buf, "%i", &val) != 1)\
2052 		return -EINVAL;\
2053 	if (lpfc_##attr##_set(phba, val) == 0) \
2054 		return strlen(buf);\
2055 	else \
2056 		return -EINVAL;\
2057 }
2058 
2059 /**
2060  * lpfc_vport_param_show - Return decimal formatted cfg attribute value
2061  *
2062  * Description:
2063  * Macro that given an attr e.g. hba_queue_depth expands
2064  * into a function with the name lpfc_hba_queue_depth_show
2065  *
2066  * lpfc_##attr##_show: prints the attribute value in decimal.
2067  * @dev: class device that is converted into a Scsi_host.
2068  * @attr: device attribute, not used.
2069  * @buf: on return contains the attribute value in decimal.
2070  *
2071  * Returns: length of formatted string.
2072  **/
2073 #define lpfc_vport_param_show(attr)	\
2074 static ssize_t \
2075 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2076 		   char *buf) \
2077 { \
2078 	struct Scsi_Host  *shost = class_to_shost(dev);\
2079 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2080 	return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\
2081 }
2082 
2083 /**
2084  * lpfc_vport_param_hex_show - Return hex formatted attribute value
2085  *
2086  * Description:
2087  * Macro that given an attr e.g.
2088  * hba_queue_depth expands into a function with the name
2089  * lpfc_hba_queue_depth_show
2090  *
2091  * lpfc_##attr##_show: prints the attribute value in hexadecimal.
2092  * @dev: class device that is converted into a Scsi_host.
2093  * @attr: device attribute, not used.
2094  * @buf: on return contains the attribute value in hexadecimal.
2095  *
2096  * Returns: length of formatted string.
2097  **/
2098 #define lpfc_vport_param_hex_show(attr)	\
2099 static ssize_t \
2100 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2101 		   char *buf) \
2102 { \
2103 	struct Scsi_Host  *shost = class_to_shost(dev);\
2104 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2105 	return snprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\
2106 }
2107 
2108 /**
2109  * lpfc_vport_param_init - Initialize a vport cfg attribute
2110  *
2111  * Description:
2112  * Macro that given an attr e.g. hba_queue_depth expands
2113  * into a function with the name lpfc_hba_queue_depth_init. The macro also
2114  * takes a default argument, a minimum and maximum argument.
2115  *
2116  * lpfc_##attr##_init: validates the min and max values then sets the
2117  * adapter config field accordingly, or uses the default if out of range
2118  * and prints an error message.
2119  * @phba: pointer the the adapter structure.
2120  * @val: integer attribute value.
2121  *
2122  * Returns:
2123  * zero on success
2124  * -EINVAL if default used
2125  **/
2126 #define lpfc_vport_param_init(attr, default, minval, maxval)	\
2127 static int \
2128 lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \
2129 { \
2130 	if (lpfc_rangecheck(val, minval, maxval)) {\
2131 		vport->cfg_##attr = val;\
2132 		return 0;\
2133 	}\
2134 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2135 			 "0423 lpfc_"#attr" attribute cannot be set to %d, "\
2136 			 "allowed range is ["#minval", "#maxval"]\n", val); \
2137 	vport->cfg_##attr = default;\
2138 	return -EINVAL;\
2139 }
2140 
2141 /**
2142  * lpfc_vport_param_set - Set a vport cfg attribute
2143  *
2144  * Description:
2145  * Macro that given an attr e.g. hba_queue_depth expands
2146  * into a function with the name lpfc_hba_queue_depth_set
2147  *
2148  * lpfc_##attr##_set: validates the min and max values then sets the
2149  * adapter config field if in the valid range. prints error message
2150  * and does not set the parameter if invalid.
2151  * @phba: pointer the the adapter structure.
2152  * @val:	integer attribute value.
2153  *
2154  * Returns:
2155  * zero on success
2156  * -EINVAL if val is invalid
2157  **/
2158 #define lpfc_vport_param_set(attr, default, minval, maxval)	\
2159 static int \
2160 lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \
2161 { \
2162 	if (lpfc_rangecheck(val, minval, maxval)) {\
2163 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2164 			"3053 lpfc_" #attr \
2165 			" changed from %d (x%x) to %d (x%x)\n", \
2166 			vport->cfg_##attr, vport->cfg_##attr, \
2167 			val, val); \
2168 		vport->cfg_##attr = val;\
2169 		return 0;\
2170 	}\
2171 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2172 			 "0424 lpfc_"#attr" attribute cannot be set to %d, "\
2173 			 "allowed range is ["#minval", "#maxval"]\n", val); \
2174 	return -EINVAL;\
2175 }
2176 
2177 /**
2178  * lpfc_vport_param_store - Set a vport attribute
2179  *
2180  * Description:
2181  * Macro that given an attr e.g. hba_queue_depth
2182  * expands into a function with the name lpfc_hba_queue_depth_store
2183  *
2184  * lpfc_##attr##_store: convert the ascii text number to an integer, then
2185  * use the lpfc_##attr##_set function to set the value.
2186  * @cdev: class device that is converted into a Scsi_host.
2187  * @buf:	contains the attribute value in decimal.
2188  * @count: not used.
2189  *
2190  * Returns:
2191  * -EINVAL if val is invalid or lpfc_##attr##_set() fails
2192  * length of buffer upon success.
2193  **/
2194 #define lpfc_vport_param_store(attr)	\
2195 static ssize_t \
2196 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
2197 		    const char *buf, size_t count) \
2198 { \
2199 	struct Scsi_Host  *shost = class_to_shost(dev);\
2200 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2201 	uint val = 0;\
2202 	if (!isdigit(buf[0]))\
2203 		return -EINVAL;\
2204 	if (sscanf(buf, "%i", &val) != 1)\
2205 		return -EINVAL;\
2206 	if (lpfc_##attr##_set(vport, val) == 0) \
2207 		return strlen(buf);\
2208 	else \
2209 		return -EINVAL;\
2210 }
2211 
2212 
2213 static DEVICE_ATTR(nvme_info, 0444, lpfc_nvme_info_show, NULL);
2214 static DEVICE_ATTR(bg_info, S_IRUGO, lpfc_bg_info_show, NULL);
2215 static DEVICE_ATTR(bg_guard_err, S_IRUGO, lpfc_bg_guard_err_show, NULL);
2216 static DEVICE_ATTR(bg_apptag_err, S_IRUGO, lpfc_bg_apptag_err_show, NULL);
2217 static DEVICE_ATTR(bg_reftag_err, S_IRUGO, lpfc_bg_reftag_err_show, NULL);
2218 static DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
2219 static DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
2220 static DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
2221 static DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
2222 static DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
2223 static DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL);
2224 static DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
2225 static DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
2226 static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show,
2227 		lpfc_link_state_store);
2228 static DEVICE_ATTR(option_rom_version, S_IRUGO,
2229 		   lpfc_option_rom_version_show, NULL);
2230 static DEVICE_ATTR(num_discovered_ports, S_IRUGO,
2231 		   lpfc_num_discovered_ports_show, NULL);
2232 static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
2233 static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
2234 static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show, NULL);
2235 static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL);
2236 static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
2237 		   lpfc_board_mode_show, lpfc_board_mode_store);
2238 static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
2239 static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL);
2240 static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL);
2241 static DEVICE_ATTR(max_rpi, S_IRUGO, lpfc_max_rpi_show, NULL);
2242 static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
2243 static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
2244 static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
2245 static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
2246 static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show, NULL);
2247 static DEVICE_ATTR(lpfc_fips_level, S_IRUGO, lpfc_fips_level_show, NULL);
2248 static DEVICE_ATTR(lpfc_fips_rev, S_IRUGO, lpfc_fips_rev_show, NULL);
2249 static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL);
2250 static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO,
2251 		   lpfc_sriov_hw_max_virtfn_show, NULL);
2252 static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
2253 static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
2254 		   NULL);
2255 
2256 static char *lpfc_soft_wwn_key = "C99G71SL8032A";
2257 #define WWN_SZ 8
2258 /**
2259  * lpfc_wwn_set - Convert string to the 8 byte WWN value.
2260  * @buf: WWN string.
2261  * @cnt: Length of string.
2262  * @wwn: Array to receive converted wwn value.
2263  *
2264  * Returns:
2265  * -EINVAL if the buffer does not contain a valid wwn
2266  * 0 success
2267  **/
2268 static size_t
2269 lpfc_wwn_set(const char *buf, size_t cnt, char wwn[])
2270 {
2271 	unsigned int i, j;
2272 
2273 	/* Count may include a LF at end of string */
2274 	if (buf[cnt-1] == '\n')
2275 		cnt--;
2276 
2277 	if ((cnt < 16) || (cnt > 18) || ((cnt == 17) && (*buf++ != 'x')) ||
2278 	    ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
2279 		return -EINVAL;
2280 
2281 	memset(wwn, 0, WWN_SZ);
2282 
2283 	/* Validate and store the new name */
2284 	for (i = 0, j = 0; i < 16; i++) {
2285 		if ((*buf >= 'a') && (*buf <= 'f'))
2286 			j = ((j << 4) | ((*buf++ - 'a') + 10));
2287 		else if ((*buf >= 'A') && (*buf <= 'F'))
2288 			j = ((j << 4) | ((*buf++ - 'A') + 10));
2289 		else if ((*buf >= '0') && (*buf <= '9'))
2290 			j = ((j << 4) | (*buf++ - '0'));
2291 		else
2292 			return -EINVAL;
2293 		if (i % 2) {
2294 			wwn[i/2] = j & 0xff;
2295 			j = 0;
2296 		}
2297 	}
2298 	return 0;
2299 }
2300 /**
2301  * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
2302  * @dev: class device that is converted into a Scsi_host.
2303  * @attr: device attribute, not used.
2304  * @buf: containing the string lpfc_soft_wwn_key.
2305  * @count: must be size of lpfc_soft_wwn_key.
2306  *
2307  * Returns:
2308  * -EINVAL if the buffer does not contain lpfc_soft_wwn_key
2309  * length of buf indicates success
2310  **/
2311 static ssize_t
2312 lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
2313 			   const char *buf, size_t count)
2314 {
2315 	struct Scsi_Host  *shost = class_to_shost(dev);
2316 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2317 	struct lpfc_hba   *phba = vport->phba;
2318 	unsigned int cnt = count;
2319 	uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
2320 	u32 *fawwpn_key = (uint32_t *)&vport->fc_sparam.un.vendorVersion[0];
2321 
2322 	/*
2323 	 * We're doing a simple sanity check for soft_wwpn setting.
2324 	 * We require that the user write a specific key to enable
2325 	 * the soft_wwpn attribute to be settable. Once the attribute
2326 	 * is written, the enable key resets. If further updates are
2327 	 * desired, the key must be written again to re-enable the
2328 	 * attribute.
2329 	 *
2330 	 * The "key" is not secret - it is a hardcoded string shown
2331 	 * here. The intent is to protect against the random user or
2332 	 * application that is just writing attributes.
2333 	 */
2334 	if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) {
2335 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2336 				 "0051 "LPFC_DRIVER_NAME" soft wwpn can not"
2337 				 " be enabled: fawwpn is enabled\n");
2338 		return -EINVAL;
2339 	}
2340 
2341 	/* count may include a LF at end of string */
2342 	if (buf[cnt-1] == '\n')
2343 		cnt--;
2344 
2345 	if ((cnt != strlen(lpfc_soft_wwn_key)) ||
2346 	    (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
2347 		return -EINVAL;
2348 
2349 	phba->soft_wwn_enable = 1;
2350 
2351 	dev_printk(KERN_WARNING, &phba->pcidev->dev,
2352 		   "lpfc%d: soft_wwpn assignment has been enabled.\n",
2353 		   phba->brd_no);
2354 	dev_printk(KERN_WARNING, &phba->pcidev->dev,
2355 		   "  The soft_wwpn feature is not supported by Broadcom.");
2356 
2357 	return count;
2358 }
2359 static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
2360 		   lpfc_soft_wwn_enable_store);
2361 
2362 /**
2363  * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
2364  * @dev: class device that is converted into a Scsi_host.
2365  * @attr: device attribute, not used.
2366  * @buf: on return contains the wwpn in hexadecimal.
2367  *
2368  * Returns: size of formatted string.
2369  **/
2370 static ssize_t
2371 lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr,
2372 		    char *buf)
2373 {
2374 	struct Scsi_Host  *shost = class_to_shost(dev);
2375 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2376 	struct lpfc_hba   *phba = vport->phba;
2377 
2378 	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
2379 			(unsigned long long)phba->cfg_soft_wwpn);
2380 }
2381 
2382 /**
2383  * lpfc_soft_wwpn_store - Set the ww port name of the adapter
2384  * @dev class device that is converted into a Scsi_host.
2385  * @attr: device attribute, not used.
2386  * @buf: contains the wwpn in hexadecimal.
2387  * @count: number of wwpn bytes in buf
2388  *
2389  * Returns:
2390  * -EACCES hba reset not enabled, adapter over temp
2391  * -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid
2392  * -EIO error taking adapter offline or online
2393  * value of count on success
2394  **/
2395 static ssize_t
2396 lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
2397 		     const char *buf, size_t count)
2398 {
2399 	struct Scsi_Host  *shost = class_to_shost(dev);
2400 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2401 	struct lpfc_hba   *phba = vport->phba;
2402 	struct completion online_compl;
2403 	int stat1 = 0, stat2 = 0;
2404 	unsigned int cnt = count;
2405 	u8 wwpn[WWN_SZ];
2406 	int rc;
2407 
2408 	if (!phba->cfg_enable_hba_reset)
2409 		return -EACCES;
2410 	spin_lock_irq(&phba->hbalock);
2411 	if (phba->over_temp_state == HBA_OVER_TEMP) {
2412 		spin_unlock_irq(&phba->hbalock);
2413 		return -EACCES;
2414 	}
2415 	spin_unlock_irq(&phba->hbalock);
2416 	/* count may include a LF at end of string */
2417 	if (buf[cnt-1] == '\n')
2418 		cnt--;
2419 
2420 	if (!phba->soft_wwn_enable)
2421 		return -EINVAL;
2422 
2423 	/* lock setting wwpn, wwnn down */
2424 	phba->soft_wwn_enable = 0;
2425 
2426 	rc = lpfc_wwn_set(buf, cnt, wwpn);
2427 	if (rc) {
2428 		/* not able to set wwpn, unlock it */
2429 		phba->soft_wwn_enable = 1;
2430 		return rc;
2431 	}
2432 
2433 	phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
2434 	fc_host_port_name(shost) = phba->cfg_soft_wwpn;
2435 	if (phba->cfg_soft_wwnn)
2436 		fc_host_node_name(shost) = phba->cfg_soft_wwnn;
2437 
2438 	dev_printk(KERN_NOTICE, &phba->pcidev->dev,
2439 		   "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
2440 
2441 	stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
2442 	if (stat1)
2443 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2444 				"0463 lpfc_soft_wwpn attribute set failed to "
2445 				"reinit adapter - %d\n", stat1);
2446 	init_completion(&online_compl);
2447 	rc = lpfc_workq_post_event(phba, &stat2, &online_compl,
2448 				   LPFC_EVT_ONLINE);
2449 	if (rc == 0)
2450 		return -ENOMEM;
2451 
2452 	wait_for_completion(&online_compl);
2453 	if (stat2)
2454 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2455 				"0464 lpfc_soft_wwpn attribute set failed to "
2456 				"reinit adapter - %d\n", stat2);
2457 	return (stat1 || stat2) ? -EIO : count;
2458 }
2459 static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,
2460 		   lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
2461 
2462 /**
2463  * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
2464  * @dev: class device that is converted into a Scsi_host.
2465  * @attr: device attribute, not used.
2466  * @buf: on return contains the wwnn in hexadecimal.
2467  *
2468  * Returns: size of formatted string.
2469  **/
2470 static ssize_t
2471 lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr,
2472 		    char *buf)
2473 {
2474 	struct Scsi_Host *shost = class_to_shost(dev);
2475 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2476 	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
2477 			(unsigned long long)phba->cfg_soft_wwnn);
2478 }
2479 
2480 /**
2481  * lpfc_soft_wwnn_store - sets the ww node name of the adapter
2482  * @cdev: class device that is converted into a Scsi_host.
2483  * @buf: contains the ww node name in hexadecimal.
2484  * @count: number of wwnn bytes in buf.
2485  *
2486  * Returns:
2487  * -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid
2488  * value of count on success
2489  **/
2490 static ssize_t
2491 lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
2492 		     const char *buf, size_t count)
2493 {
2494 	struct Scsi_Host *shost = class_to_shost(dev);
2495 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2496 	unsigned int cnt = count;
2497 	u8 wwnn[WWN_SZ];
2498 	int rc;
2499 
2500 	/* count may include a LF at end of string */
2501 	if (buf[cnt-1] == '\n')
2502 		cnt--;
2503 
2504 	if (!phba->soft_wwn_enable)
2505 		return -EINVAL;
2506 
2507 	rc = lpfc_wwn_set(buf, cnt, wwnn);
2508 	if (rc) {
2509 		/* Allow wwnn to be set many times, as long as the enable
2510 		 * is set. However, once the wwpn is set, everything locks.
2511 		 */
2512 		return rc;
2513 	}
2514 
2515 	phba->cfg_soft_wwnn = wwn_to_u64(wwnn);
2516 
2517 	dev_printk(KERN_NOTICE, &phba->pcidev->dev,
2518 		   "lpfc%d: soft_wwnn set. Value will take effect upon "
2519 		   "setting of the soft_wwpn\n", phba->brd_no);
2520 
2521 	return count;
2522 }
2523 static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,
2524 		   lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
2525 
2526 /**
2527  * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for
2528  *		      Optimized Access Storage (OAS) operations.
2529  * @dev: class device that is converted into a Scsi_host.
2530  * @attr: device attribute, not used.
2531  * @buf: buffer for passing information.
2532  *
2533  * Returns:
2534  * value of count
2535  **/
2536 static ssize_t
2537 lpfc_oas_tgt_show(struct device *dev, struct device_attribute *attr,
2538 		  char *buf)
2539 {
2540 	struct Scsi_Host *shost = class_to_shost(dev);
2541 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2542 
2543 	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
2544 			wwn_to_u64(phba->cfg_oas_tgt_wwpn));
2545 }
2546 
2547 /**
2548  * lpfc_oas_tgt_store - Store wwpn of target whose luns maybe enabled for
2549  *		      Optimized Access Storage (OAS) operations.
2550  * @dev: class device that is converted into a Scsi_host.
2551  * @attr: device attribute, not used.
2552  * @buf: buffer for passing information.
2553  * @count: Size of the data buffer.
2554  *
2555  * Returns:
2556  * -EINVAL count is invalid, invalid wwpn byte invalid
2557  * -EPERM oas is not supported by hba
2558  * value of count on success
2559  **/
2560 static ssize_t
2561 lpfc_oas_tgt_store(struct device *dev, struct device_attribute *attr,
2562 		   const char *buf, size_t count)
2563 {
2564 	struct Scsi_Host *shost = class_to_shost(dev);
2565 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2566 	unsigned int cnt = count;
2567 	uint8_t wwpn[WWN_SZ];
2568 	int rc;
2569 
2570 	if (!phba->cfg_fof)
2571 		return -EPERM;
2572 
2573 	/* count may include a LF at end of string */
2574 	if (buf[cnt-1] == '\n')
2575 		cnt--;
2576 
2577 	rc = lpfc_wwn_set(buf, cnt, wwpn);
2578 	if (rc)
2579 		return rc;
2580 
2581 	memcpy(phba->cfg_oas_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2582 	memcpy(phba->sli4_hba.oas_next_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2583 	if (wwn_to_u64(wwpn) == 0)
2584 		phba->cfg_oas_flags |= OAS_FIND_ANY_TARGET;
2585 	else
2586 		phba->cfg_oas_flags &= ~OAS_FIND_ANY_TARGET;
2587 	phba->cfg_oas_flags &= ~OAS_LUN_VALID;
2588 	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
2589 	return count;
2590 }
2591 static DEVICE_ATTR(lpfc_xlane_tgt, S_IRUGO | S_IWUSR,
2592 		   lpfc_oas_tgt_show, lpfc_oas_tgt_store);
2593 
2594 /**
2595  * lpfc_oas_priority_show - Return wwpn of target whose luns maybe enabled for
2596  *		      Optimized Access Storage (OAS) operations.
2597  * @dev: class device that is converted into a Scsi_host.
2598  * @attr: device attribute, not used.
2599  * @buf: buffer for passing information.
2600  *
2601  * Returns:
2602  * value of count
2603  **/
2604 static ssize_t
2605 lpfc_oas_priority_show(struct device *dev, struct device_attribute *attr,
2606 		       char *buf)
2607 {
2608 	struct Scsi_Host *shost = class_to_shost(dev);
2609 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2610 
2611 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_priority);
2612 }
2613 
2614 /**
2615  * lpfc_oas_priority_store - Store wwpn of target whose luns maybe enabled for
2616  *		      Optimized Access Storage (OAS) operations.
2617  * @dev: class device that is converted into a Scsi_host.
2618  * @attr: device attribute, not used.
2619  * @buf: buffer for passing information.
2620  * @count: Size of the data buffer.
2621  *
2622  * Returns:
2623  * -EINVAL count is invalid, invalid wwpn byte invalid
2624  * -EPERM oas is not supported by hba
2625  * value of count on success
2626  **/
2627 static ssize_t
2628 lpfc_oas_priority_store(struct device *dev, struct device_attribute *attr,
2629 			const char *buf, size_t count)
2630 {
2631 	struct Scsi_Host *shost = class_to_shost(dev);
2632 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2633 	unsigned int cnt = count;
2634 	unsigned long val;
2635 	int ret;
2636 
2637 	if (!phba->cfg_fof)
2638 		return -EPERM;
2639 
2640 	/* count may include a LF at end of string */
2641 	if (buf[cnt-1] == '\n')
2642 		cnt--;
2643 
2644 	ret = kstrtoul(buf, 0, &val);
2645 	if (ret || (val > 0x7f))
2646 		return -EINVAL;
2647 
2648 	if (val)
2649 		phba->cfg_oas_priority = (uint8_t)val;
2650 	else
2651 		phba->cfg_oas_priority = phba->cfg_XLanePriority;
2652 	return count;
2653 }
2654 static DEVICE_ATTR(lpfc_xlane_priority, S_IRUGO | S_IWUSR,
2655 		   lpfc_oas_priority_show, lpfc_oas_priority_store);
2656 
2657 /**
2658  * lpfc_oas_vpt_show - Return wwpn of vport whose targets maybe enabled
2659  *		      for Optimized Access Storage (OAS) operations.
2660  * @dev: class device that is converted into a Scsi_host.
2661  * @attr: device attribute, not used.
2662  * @buf: buffer for passing information.
2663  *
2664  * Returns:
2665  * value of count on success
2666  **/
2667 static ssize_t
2668 lpfc_oas_vpt_show(struct device *dev, struct device_attribute *attr,
2669 		  char *buf)
2670 {
2671 	struct Scsi_Host *shost = class_to_shost(dev);
2672 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2673 
2674 	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
2675 			wwn_to_u64(phba->cfg_oas_vpt_wwpn));
2676 }
2677 
2678 /**
2679  * lpfc_oas_vpt_store - Store wwpn of vport whose targets maybe enabled
2680  *		      for Optimized Access Storage (OAS) operations.
2681  * @dev: class device that is converted into a Scsi_host.
2682  * @attr: device attribute, not used.
2683  * @buf: buffer for passing information.
2684  * @count: Size of the data buffer.
2685  *
2686  * Returns:
2687  * -EINVAL count is invalid, invalid wwpn byte invalid
2688  * -EPERM oas is not supported by hba
2689  * value of count on success
2690  **/
2691 static ssize_t
2692 lpfc_oas_vpt_store(struct device *dev, struct device_attribute *attr,
2693 		   const char *buf, size_t count)
2694 {
2695 	struct Scsi_Host *shost = class_to_shost(dev);
2696 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2697 	unsigned int cnt = count;
2698 	uint8_t wwpn[WWN_SZ];
2699 	int rc;
2700 
2701 	if (!phba->cfg_fof)
2702 		return -EPERM;
2703 
2704 	/* count may include a LF at end of string */
2705 	if (buf[cnt-1] == '\n')
2706 		cnt--;
2707 
2708 	rc = lpfc_wwn_set(buf, cnt, wwpn);
2709 	if (rc)
2710 		return rc;
2711 
2712 	memcpy(phba->cfg_oas_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2713 	memcpy(phba->sli4_hba.oas_next_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2714 	if (wwn_to_u64(wwpn) == 0)
2715 		phba->cfg_oas_flags |= OAS_FIND_ANY_VPORT;
2716 	else
2717 		phba->cfg_oas_flags &= ~OAS_FIND_ANY_VPORT;
2718 	phba->cfg_oas_flags &= ~OAS_LUN_VALID;
2719 	if (phba->cfg_oas_priority == 0)
2720 		phba->cfg_oas_priority = phba->cfg_XLanePriority;
2721 	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
2722 	return count;
2723 }
2724 static DEVICE_ATTR(lpfc_xlane_vpt, S_IRUGO | S_IWUSR,
2725 		   lpfc_oas_vpt_show, lpfc_oas_vpt_store);
2726 
2727 /**
2728  * lpfc_oas_lun_state_show - Return the current state (enabled or disabled)
2729  *			    of whether luns will be enabled or disabled
2730  *			    for Optimized Access Storage (OAS) operations.
2731  * @dev: class device that is converted into a Scsi_host.
2732  * @attr: device attribute, not used.
2733  * @buf: buffer for passing information.
2734  *
2735  * Returns:
2736  * size of formatted string.
2737  **/
2738 static ssize_t
2739 lpfc_oas_lun_state_show(struct device *dev, struct device_attribute *attr,
2740 			char *buf)
2741 {
2742 	struct Scsi_Host *shost = class_to_shost(dev);
2743 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2744 
2745 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_state);
2746 }
2747 
2748 /**
2749  * lpfc_oas_lun_state_store - Store the state (enabled or disabled)
2750  *			    of whether luns will be enabled or disabled
2751  *			    for Optimized Access Storage (OAS) operations.
2752  * @dev: class device that is converted into a Scsi_host.
2753  * @attr: device attribute, not used.
2754  * @buf: buffer for passing information.
2755  * @count: Size of the data buffer.
2756  *
2757  * Returns:
2758  * -EINVAL count is invalid, invalid wwpn byte invalid
2759  * -EPERM oas is not supported by hba
2760  * value of count on success
2761  **/
2762 static ssize_t
2763 lpfc_oas_lun_state_store(struct device *dev, struct device_attribute *attr,
2764 			 const char *buf, size_t count)
2765 {
2766 	struct Scsi_Host *shost = class_to_shost(dev);
2767 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2768 	int val = 0;
2769 
2770 	if (!phba->cfg_fof)
2771 		return -EPERM;
2772 
2773 	if (!isdigit(buf[0]))
2774 		return -EINVAL;
2775 
2776 	if (sscanf(buf, "%i", &val) != 1)
2777 		return -EINVAL;
2778 
2779 	if ((val != 0) && (val != 1))
2780 		return -EINVAL;
2781 
2782 	phba->cfg_oas_lun_state = val;
2783 	return strlen(buf);
2784 }
2785 static DEVICE_ATTR(lpfc_xlane_lun_state, S_IRUGO | S_IWUSR,
2786 		   lpfc_oas_lun_state_show, lpfc_oas_lun_state_store);
2787 
2788 /**
2789  * lpfc_oas_lun_status_show - Return the status of the Optimized Access
2790  *                          Storage (OAS) lun returned by the
2791  *                          lpfc_oas_lun_show function.
2792  * @dev: class device that is converted into a Scsi_host.
2793  * @attr: device attribute, not used.
2794  * @buf: buffer for passing information.
2795  *
2796  * Returns:
2797  * size of formatted string.
2798  **/
2799 static ssize_t
2800 lpfc_oas_lun_status_show(struct device *dev, struct device_attribute *attr,
2801 			 char *buf)
2802 {
2803 	struct Scsi_Host *shost = class_to_shost(dev);
2804 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2805 
2806 	if (!(phba->cfg_oas_flags & OAS_LUN_VALID))
2807 		return -EFAULT;
2808 
2809 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_status);
2810 }
2811 static DEVICE_ATTR(lpfc_xlane_lun_status, S_IRUGO,
2812 		   lpfc_oas_lun_status_show, NULL);
2813 
2814 
2815 /**
2816  * lpfc_oas_lun_state_set - enable or disable a lun for Optimized Access Storage
2817  *			   (OAS) operations.
2818  * @phba: lpfc_hba pointer.
2819  * @ndlp: pointer to fcp target node.
2820  * @lun: the fc lun for setting oas state.
2821  * @oas_state: the oas state to be set to the lun.
2822  *
2823  * Returns:
2824  * SUCCESS : 0
2825  * -EPERM OAS is not enabled or not supported by this port.
2826  *
2827  */
2828 static size_t
2829 lpfc_oas_lun_state_set(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
2830 		       uint8_t tgt_wwpn[], uint64_t lun,
2831 		       uint32_t oas_state, uint8_t pri)
2832 {
2833 
2834 	int rc = 0;
2835 
2836 	if (!phba->cfg_fof)
2837 		return -EPERM;
2838 
2839 	if (oas_state) {
2840 		if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
2841 					 (struct lpfc_name *)tgt_wwpn,
2842 					 lun, pri))
2843 			rc = -ENOMEM;
2844 	} else {
2845 		lpfc_disable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
2846 				     (struct lpfc_name *)tgt_wwpn, lun, pri);
2847 	}
2848 	return rc;
2849 
2850 }
2851 
2852 /**
2853  * lpfc_oas_lun_get_next - get the next lun that has been enabled for Optimized
2854  *			  Access Storage (OAS) operations.
2855  * @phba: lpfc_hba pointer.
2856  * @vpt_wwpn: wwpn of the vport associated with the returned lun
2857  * @tgt_wwpn: wwpn of the target associated with the returned lun
2858  * @lun_status: status of the lun returned lun
2859  *
2860  * Returns the first or next lun enabled for OAS operations for the vport/target
2861  * specified.  If a lun is found, its vport wwpn, target wwpn and status is
2862  * returned.  If the lun is not found, NOT_OAS_ENABLED_LUN is returned.
2863  *
2864  * Return:
2865  * lun that is OAS enabled for the vport/target
2866  * NOT_OAS_ENABLED_LUN when no oas enabled lun found.
2867  */
2868 static uint64_t
2869 lpfc_oas_lun_get_next(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
2870 		      uint8_t tgt_wwpn[], uint32_t *lun_status,
2871 		      uint32_t *lun_pri)
2872 {
2873 	uint64_t found_lun;
2874 
2875 	if (unlikely(!phba) || !vpt_wwpn || !tgt_wwpn)
2876 		return NOT_OAS_ENABLED_LUN;
2877 	if (lpfc_find_next_oas_lun(phba, (struct lpfc_name *)
2878 				   phba->sli4_hba.oas_next_vpt_wwpn,
2879 				   (struct lpfc_name *)
2880 				   phba->sli4_hba.oas_next_tgt_wwpn,
2881 				   &phba->sli4_hba.oas_next_lun,
2882 				   (struct lpfc_name *)vpt_wwpn,
2883 				   (struct lpfc_name *)tgt_wwpn,
2884 				   &found_lun, lun_status, lun_pri))
2885 		return found_lun;
2886 	else
2887 		return NOT_OAS_ENABLED_LUN;
2888 }
2889 
2890 /**
2891  * lpfc_oas_lun_state_change - enable/disable a lun for OAS operations
2892  * @phba: lpfc_hba pointer.
2893  * @vpt_wwpn: vport wwpn by reference.
2894  * @tgt_wwpn: target wwpn by reference.
2895  * @lun: the fc lun for setting oas state.
2896  * @oas_state: the oas state to be set to the oas_lun.
2897  *
2898  * This routine enables (OAS_LUN_ENABLE) or disables (OAS_LUN_DISABLE)
2899  * a lun for OAS operations.
2900  *
2901  * Return:
2902  * SUCCESS: 0
2903  * -ENOMEM: failed to enable an lun for OAS operations
2904  * -EPERM: OAS is not enabled
2905  */
2906 static ssize_t
2907 lpfc_oas_lun_state_change(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
2908 			  uint8_t tgt_wwpn[], uint64_t lun,
2909 			  uint32_t oas_state, uint8_t pri)
2910 {
2911 
2912 	int rc;
2913 
2914 	rc = lpfc_oas_lun_state_set(phba, vpt_wwpn, tgt_wwpn, lun,
2915 				    oas_state, pri);
2916 	return rc;
2917 }
2918 
2919 /**
2920  * lpfc_oas_lun_show - Return oas enabled luns from a chosen target
2921  * @dev: class device that is converted into a Scsi_host.
2922  * @attr: device attribute, not used.
2923  * @buf: buffer for passing information.
2924  *
2925  * This routine returns a lun enabled for OAS each time the function
2926  * is called.
2927  *
2928  * Returns:
2929  * SUCCESS: size of formatted string.
2930  * -EFAULT: target or vport wwpn was not set properly.
2931  * -EPERM: oas is not enabled.
2932  **/
2933 static ssize_t
2934 lpfc_oas_lun_show(struct device *dev, struct device_attribute *attr,
2935 		  char *buf)
2936 {
2937 	struct Scsi_Host *shost = class_to_shost(dev);
2938 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2939 
2940 	uint64_t oas_lun;
2941 	int len = 0;
2942 
2943 	if (!phba->cfg_fof)
2944 		return -EPERM;
2945 
2946 	if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
2947 		if (!(phba->cfg_oas_flags & OAS_FIND_ANY_VPORT))
2948 			return -EFAULT;
2949 
2950 	if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
2951 		if (!(phba->cfg_oas_flags & OAS_FIND_ANY_TARGET))
2952 			return -EFAULT;
2953 
2954 	oas_lun = lpfc_oas_lun_get_next(phba, phba->cfg_oas_vpt_wwpn,
2955 					phba->cfg_oas_tgt_wwpn,
2956 					&phba->cfg_oas_lun_status,
2957 					&phba->cfg_oas_priority);
2958 	if (oas_lun != NOT_OAS_ENABLED_LUN)
2959 		phba->cfg_oas_flags |= OAS_LUN_VALID;
2960 
2961 	len += snprintf(buf + len, PAGE_SIZE-len, "0x%llx", oas_lun);
2962 
2963 	return len;
2964 }
2965 
2966 /**
2967  * lpfc_oas_lun_store - Sets the OAS state for lun
2968  * @dev: class device that is converted into a Scsi_host.
2969  * @attr: device attribute, not used.
2970  * @buf: buffer for passing information.
2971  *
2972  * This function sets the OAS state for lun.  Before this function is called,
2973  * the vport wwpn, target wwpn, and oas state need to be set.
2974  *
2975  * Returns:
2976  * SUCCESS: size of formatted string.
2977  * -EFAULT: target or vport wwpn was not set properly.
2978  * -EPERM: oas is not enabled.
2979  * size of formatted string.
2980  **/
2981 static ssize_t
2982 lpfc_oas_lun_store(struct device *dev, struct device_attribute *attr,
2983 		   const char *buf, size_t count)
2984 {
2985 	struct Scsi_Host *shost = class_to_shost(dev);
2986 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2987 	uint64_t scsi_lun;
2988 	uint32_t pri;
2989 	ssize_t rc;
2990 
2991 	if (!phba->cfg_fof)
2992 		return -EPERM;
2993 
2994 	if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
2995 		return -EFAULT;
2996 
2997 	if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
2998 		return -EFAULT;
2999 
3000 	if (!isdigit(buf[0]))
3001 		return -EINVAL;
3002 
3003 	if (sscanf(buf, "0x%llx", &scsi_lun) != 1)
3004 		return -EINVAL;
3005 
3006 	pri = phba->cfg_oas_priority;
3007 	if (pri == 0)
3008 		pri = phba->cfg_XLanePriority;
3009 
3010 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3011 			"3372 Try to set vport 0x%llx target 0x%llx lun:0x%llx "
3012 			"priority 0x%x with oas state %d\n",
3013 			wwn_to_u64(phba->cfg_oas_vpt_wwpn),
3014 			wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun,
3015 			pri, phba->cfg_oas_lun_state);
3016 
3017 	rc = lpfc_oas_lun_state_change(phba, phba->cfg_oas_vpt_wwpn,
3018 				       phba->cfg_oas_tgt_wwpn, scsi_lun,
3019 				       phba->cfg_oas_lun_state, pri);
3020 	if (rc)
3021 		return rc;
3022 
3023 	return count;
3024 }
3025 static DEVICE_ATTR(lpfc_xlane_lun, S_IRUGO | S_IWUSR,
3026 		   lpfc_oas_lun_show, lpfc_oas_lun_store);
3027 
3028 int lpfc_enable_nvmet_cnt;
3029 unsigned long long lpfc_enable_nvmet[LPFC_NVMET_MAX_PORTS] = {
3030 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3031 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
3032 module_param_array(lpfc_enable_nvmet, ullong, &lpfc_enable_nvmet_cnt, 0444);
3033 MODULE_PARM_DESC(lpfc_enable_nvmet, "Enable HBA port(s) WWPN as a NVME Target");
3034 
3035 static int lpfc_poll = 0;
3036 module_param(lpfc_poll, int, S_IRUGO);
3037 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
3038 		 " 0 - none,"
3039 		 " 1 - poll with interrupts enabled"
3040 		 " 3 - poll and disable FCP ring interrupts");
3041 
3042 static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
3043 		   lpfc_poll_show, lpfc_poll_store);
3044 
3045 int lpfc_no_hba_reset_cnt;
3046 unsigned long lpfc_no_hba_reset[MAX_HBAS_NO_RESET] = {
3047 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
3048 module_param_array(lpfc_no_hba_reset, ulong, &lpfc_no_hba_reset_cnt, 0444);
3049 MODULE_PARM_DESC(lpfc_no_hba_reset, "WWPN of HBAs that should not be reset");
3050 
3051 LPFC_ATTR(sli_mode, 0, 0, 3,
3052 	"SLI mode selector:"
3053 	" 0 - auto (SLI-3 if supported),"
3054 	" 2 - select SLI-2 even on SLI-3 capable HBAs,"
3055 	" 3 - select SLI-3");
3056 
3057 LPFC_ATTR_R(enable_npiv, 1, 0, 1,
3058 	"Enable NPIV functionality");
3059 
3060 LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2,
3061 	"FCF Fast failover=1 Priority failover=2");
3062 
3063 /*
3064 # lpfc_enable_rrq: Track XRI/OXID reuse after IO failures
3065 #	0x0 = disabled, XRI/OXID use not tracked.
3066 #	0x1 = XRI/OXID reuse is timed with ratov, RRQ sent.
3067 #	0x2 = XRI/OXID reuse is timed with ratov, No RRQ sent.
3068 */
3069 LPFC_ATTR_R(enable_rrq, 2, 0, 2,
3070 	"Enable RRQ functionality");
3071 
3072 /*
3073 # lpfc_suppress_link_up:  Bring link up at initialization
3074 #            0x0  = bring link up (issue MBX_INIT_LINK)
3075 #            0x1  = do NOT bring link up at initialization(MBX_INIT_LINK)
3076 #            0x2  = never bring up link
3077 # Default value is 0.
3078 */
3079 LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK,
3080 		LPFC_DELAY_INIT_LINK_INDEFINITELY,
3081 		"Suppress Link Up at initialization");
3082 /*
3083 # lpfc_cnt: Number of IOCBs allocated for ELS, CT, and ABTS
3084 #       1 - (1024)
3085 #       2 - (2048)
3086 #       3 - (3072)
3087 #       4 - (4096)
3088 #       5 - (5120)
3089 */
3090 static ssize_t
3091 lpfc_iocb_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
3092 {
3093 	struct Scsi_Host  *shost = class_to_shost(dev);
3094 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3095 
3096 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->iocb_max);
3097 }
3098 
3099 static DEVICE_ATTR(iocb_hw, S_IRUGO,
3100 			 lpfc_iocb_hw_show, NULL);
3101 static ssize_t
3102 lpfc_txq_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
3103 {
3104 	struct Scsi_Host  *shost = class_to_shost(dev);
3105 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3106 	struct lpfc_sli_ring *pring = lpfc_phba_elsring(phba);
3107 
3108 	return snprintf(buf, PAGE_SIZE, "%d\n", pring->txq_max);
3109 }
3110 
3111 static DEVICE_ATTR(txq_hw, S_IRUGO,
3112 			 lpfc_txq_hw_show, NULL);
3113 static ssize_t
3114 lpfc_txcmplq_hw_show(struct device *dev, struct device_attribute *attr,
3115  char *buf)
3116 {
3117 	struct Scsi_Host  *shost = class_to_shost(dev);
3118 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3119 	struct lpfc_sli_ring *pring = lpfc_phba_elsring(phba);
3120 
3121 	return snprintf(buf, PAGE_SIZE, "%d\n", pring->txcmplq_max);
3122 }
3123 
3124 static DEVICE_ATTR(txcmplq_hw, S_IRUGO,
3125 			 lpfc_txcmplq_hw_show, NULL);
3126 
3127 LPFC_ATTR_R(iocb_cnt, 2, 1, 5,
3128 	"Number of IOCBs alloc for ELS, CT, and ABTS: 1k to 5k IOCBs");
3129 
3130 /*
3131 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
3132 # until the timer expires. Value range is [0,255]. Default value is 30.
3133 */
3134 static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
3135 static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO;
3136 module_param(lpfc_nodev_tmo, int, 0);
3137 MODULE_PARM_DESC(lpfc_nodev_tmo,
3138 		 "Seconds driver will hold I/O waiting "
3139 		 "for a device to come back");
3140 
3141 /**
3142  * lpfc_nodev_tmo_show - Return the hba dev loss timeout value
3143  * @dev: class converted to a Scsi_host structure.
3144  * @attr: device attribute, not used.
3145  * @buf: on return contains the dev loss timeout in decimal.
3146  *
3147  * Returns: size of formatted string.
3148  **/
3149 static ssize_t
3150 lpfc_nodev_tmo_show(struct device *dev, struct device_attribute *attr,
3151 		    char *buf)
3152 {
3153 	struct Scsi_Host  *shost = class_to_shost(dev);
3154 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3155 
3156 	return snprintf(buf, PAGE_SIZE, "%d\n",	vport->cfg_devloss_tmo);
3157 }
3158 
3159 /**
3160  * lpfc_nodev_tmo_init - Set the hba nodev timeout value
3161  * @vport: lpfc vport structure pointer.
3162  * @val: contains the nodev timeout value.
3163  *
3164  * Description:
3165  * If the devloss tmo is already set then nodev tmo is set to devloss tmo,
3166  * a kernel error message is printed and zero is returned.
3167  * Else if val is in range then nodev tmo and devloss tmo are set to val.
3168  * Otherwise nodev tmo is set to the default value.
3169  *
3170  * Returns:
3171  * zero if already set or if val is in range
3172  * -EINVAL val out of range
3173  **/
3174 static int
3175 lpfc_nodev_tmo_init(struct lpfc_vport *vport, int val)
3176 {
3177 	if (vport->cfg_devloss_tmo != LPFC_DEF_DEVLOSS_TMO) {
3178 		vport->cfg_nodev_tmo = vport->cfg_devloss_tmo;
3179 		if (val != LPFC_DEF_DEVLOSS_TMO)
3180 			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3181 					 "0407 Ignoring lpfc_nodev_tmo module "
3182 					 "parameter because lpfc_devloss_tmo "
3183 					 "is set.\n");
3184 		return 0;
3185 	}
3186 
3187 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3188 		vport->cfg_nodev_tmo = val;
3189 		vport->cfg_devloss_tmo = val;
3190 		return 0;
3191 	}
3192 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3193 			 "0400 lpfc_nodev_tmo attribute cannot be set to"
3194 			 " %d, allowed range is [%d, %d]\n",
3195 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3196 	vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
3197 	return -EINVAL;
3198 }
3199 
3200 /**
3201  * lpfc_update_rport_devloss_tmo - Update dev loss tmo value
3202  * @vport: lpfc vport structure pointer.
3203  *
3204  * Description:
3205  * Update all the ndlp's dev loss tmo with the vport devloss tmo value.
3206  **/
3207 static void
3208 lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport)
3209 {
3210 	struct Scsi_Host  *shost;
3211 	struct lpfc_nodelist  *ndlp;
3212 
3213 	shost = lpfc_shost_from_vport(vport);
3214 	spin_lock_irq(shost->host_lock);
3215 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3216 		if (!NLP_CHK_NODE_ACT(ndlp))
3217 			continue;
3218 		if (ndlp->rport)
3219 			ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo;
3220 	}
3221 	spin_unlock_irq(shost->host_lock);
3222 }
3223 
3224 /**
3225  * lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values
3226  * @vport: lpfc vport structure pointer.
3227  * @val: contains the tmo value.
3228  *
3229  * Description:
3230  * If the devloss tmo is already set or the vport dev loss tmo has changed
3231  * then a kernel error message is printed and zero is returned.
3232  * Else if val is in range then nodev tmo and devloss tmo are set to val.
3233  * Otherwise nodev tmo is set to the default value.
3234  *
3235  * Returns:
3236  * zero if already set or if val is in range
3237  * -EINVAL val out of range
3238  **/
3239 static int
3240 lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val)
3241 {
3242 	if (vport->dev_loss_tmo_changed ||
3243 	    (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
3244 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3245 				 "0401 Ignoring change to lpfc_nodev_tmo "
3246 				 "because lpfc_devloss_tmo is set.\n");
3247 		return 0;
3248 	}
3249 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3250 		vport->cfg_nodev_tmo = val;
3251 		vport->cfg_devloss_tmo = val;
3252 		/*
3253 		 * For compat: set the fc_host dev loss so new rports
3254 		 * will get the value.
3255 		 */
3256 		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3257 		lpfc_update_rport_devloss_tmo(vport);
3258 		return 0;
3259 	}
3260 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3261 			 "0403 lpfc_nodev_tmo attribute cannot be set to "
3262 			 "%d, allowed range is [%d, %d]\n",
3263 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3264 	return -EINVAL;
3265 }
3266 
3267 lpfc_vport_param_store(nodev_tmo)
3268 
3269 static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
3270 		   lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
3271 
3272 /*
3273 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
3274 # disappear until the timer expires. Value range is [0,255]. Default
3275 # value is 30.
3276 */
3277 module_param(lpfc_devloss_tmo, int, S_IRUGO);
3278 MODULE_PARM_DESC(lpfc_devloss_tmo,
3279 		 "Seconds driver will hold I/O waiting "
3280 		 "for a device to come back");
3281 lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
3282 		      LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
3283 lpfc_vport_param_show(devloss_tmo)
3284 
3285 /**
3286  * lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit
3287  * @vport: lpfc vport structure pointer.
3288  * @val: contains the tmo value.
3289  *
3290  * Description:
3291  * If val is in a valid range then set the vport nodev tmo,
3292  * devloss tmo, also set the vport dev loss tmo changed flag.
3293  * Else a kernel error message is printed.
3294  *
3295  * Returns:
3296  * zero if val is in range
3297  * -EINVAL val out of range
3298  **/
3299 static int
3300 lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val)
3301 {
3302 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3303 		vport->cfg_nodev_tmo = val;
3304 		vport->cfg_devloss_tmo = val;
3305 		vport->dev_loss_tmo_changed = 1;
3306 		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3307 		lpfc_update_rport_devloss_tmo(vport);
3308 		return 0;
3309 	}
3310 
3311 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3312 			 "0404 lpfc_devloss_tmo attribute cannot be set to "
3313 			 "%d, allowed range is [%d, %d]\n",
3314 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3315 	return -EINVAL;
3316 }
3317 
3318 lpfc_vport_param_store(devloss_tmo)
3319 static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
3320 		   lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
3321 
3322 /*
3323  * lpfc_suppress_rsp: Enable suppress rsp feature is firmware supports it
3324  * lpfc_suppress_rsp = 0  Disable
3325  * lpfc_suppress_rsp = 1  Enable (default)
3326  *
3327  */
3328 LPFC_ATTR_R(suppress_rsp, 1, 0, 1,
3329 	    "Enable suppress rsp feature is firmware supports it");
3330 
3331 /*
3332  * lpfc_nvmet_mrq: Specify number of RQ pairs for processing NVMET cmds
3333  * lpfc_nvmet_mrq = 1  use a single RQ pair
3334  * lpfc_nvmet_mrq >= 2  use specified RQ pairs for MRQ
3335  *
3336  */
3337 LPFC_ATTR_R(nvmet_mrq,
3338 	    1, 1, 16,
3339 	    "Specify number of RQ pairs for processing NVMET cmds");
3340 
3341 /*
3342  * lpfc_enable_fc4_type: Defines what FC4 types are supported.
3343  * Supported Values:  1 - register just FCP
3344  *                    3 - register both FCP and NVME
3345  * Supported values are [1,3]. Default value is 1
3346  */
3347 LPFC_ATTR_R(enable_fc4_type, LPFC_ENABLE_FCP,
3348 	    LPFC_ENABLE_FCP, LPFC_ENABLE_BOTH,
3349 	    "Define fc4 type to register with fabric.");
3350 
3351 /*
3352  * lpfc_xri_split: Defines the division of XRI resources between SCSI and NVME
3353  * This parameter is only used if:
3354  *     lpfc_enable_fc4_type is 3 - register both FCP and NVME and
3355  *     port is not configured for NVMET.
3356  *
3357  * ELS/CT always get 10% of XRIs, up to a maximum of 250
3358  * The remaining XRIs get split up based on lpfc_xri_split per port:
3359  *
3360  * Supported Values are in percentages
3361  * the xri_split value is the percentage the SCSI port will get. The remaining
3362  * percentage will go to NVME.
3363  */
3364 LPFC_ATTR_R(xri_split, 50, 10, 90,
3365 	    "Division of XRI resources between SCSI and NVME");
3366 
3367 /*
3368 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being
3369 # deluged with LOTS of information.
3370 # You can set a bit mask to record specific types of verbose messages:
3371 # See lpfc_logmsh.h for definitions.
3372 */
3373 LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff,
3374 		       "Verbose logging bit-mask");
3375 
3376 /*
3377 # lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters
3378 # objects that have been registered with the nameserver after login.
3379 */
3380 LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,
3381 		  "Deregister nameserver objects before LOGO");
3382 
3383 /*
3384 # lun_queue_depth:  This parameter is used to limit the number of outstanding
3385 # commands per FCP LUN. Value range is [1,512]. Default value is 30.
3386 # If this parameter value is greater than 1/8th the maximum number of exchanges
3387 # supported by the HBA port, then the lun queue depth will be reduced to
3388 # 1/8th the maximum number of exchanges.
3389 */
3390 LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512,
3391 		  "Max number of FCP commands we can queue to a specific LUN");
3392 
3393 /*
3394 # tgt_queue_depth:  This parameter is used to limit the number of outstanding
3395 # commands per target port. Value range is [10,65535]. Default value is 65535.
3396 */
3397 LPFC_VPORT_ATTR_R(tgt_queue_depth, 65535, 10, 65535,
3398 		  "Max number of FCP commands we can queue to a specific target port");
3399 
3400 /*
3401 # hba_queue_depth:  This parameter is used to limit the number of outstanding
3402 # commands per lpfc HBA. Value range is [32,8192]. If this parameter
3403 # value is greater than the maximum number of exchanges supported by the HBA,
3404 # then maximum number of exchanges supported by the HBA is used to determine
3405 # the hba_queue_depth.
3406 */
3407 LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192,
3408 	    "Max number of FCP commands we can queue to a lpfc HBA");
3409 
3410 /*
3411 # peer_port_login:  This parameter allows/prevents logins
3412 # between peer ports hosted on the same physical port.
3413 # When this parameter is set 0 peer ports of same physical port
3414 # are not allowed to login to each other.
3415 # When this parameter is set 1 peer ports of same physical port
3416 # are allowed to login to each other.
3417 # Default value of this parameter is 0.
3418 */
3419 LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1,
3420 		  "Allow peer ports on the same physical port to login to each "
3421 		  "other.");
3422 
3423 /*
3424 # restrict_login:  This parameter allows/prevents logins
3425 # between Virtual Ports and remote initiators.
3426 # When this parameter is not set (0) Virtual Ports will accept PLOGIs from
3427 # other initiators and will attempt to PLOGI all remote ports.
3428 # When this parameter is set (1) Virtual Ports will reject PLOGIs from
3429 # remote ports and will not attempt to PLOGI to other initiators.
3430 # This parameter does not restrict to the physical port.
3431 # This parameter does not restrict logins to Fabric resident remote ports.
3432 # Default value of this parameter is 1.
3433 */
3434 static int lpfc_restrict_login = 1;
3435 module_param(lpfc_restrict_login, int, S_IRUGO);
3436 MODULE_PARM_DESC(lpfc_restrict_login,
3437 		 "Restrict virtual ports login to remote initiators.");
3438 lpfc_vport_param_show(restrict_login);
3439 
3440 /**
3441  * lpfc_restrict_login_init - Set the vport restrict login flag
3442  * @vport: lpfc vport structure pointer.
3443  * @val: contains the restrict login value.
3444  *
3445  * Description:
3446  * If val is not in a valid range then log a kernel error message and set
3447  * the vport restrict login to one.
3448  * If the port type is physical clear the restrict login flag and return.
3449  * Else set the restrict login flag to val.
3450  *
3451  * Returns:
3452  * zero if val is in range
3453  * -EINVAL val out of range
3454  **/
3455 static int
3456 lpfc_restrict_login_init(struct lpfc_vport *vport, int val)
3457 {
3458 	if (val < 0 || val > 1) {
3459 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3460 				 "0422 lpfc_restrict_login attribute cannot "
3461 				 "be set to %d, allowed range is [0, 1]\n",
3462 				 val);
3463 		vport->cfg_restrict_login = 1;
3464 		return -EINVAL;
3465 	}
3466 	if (vport->port_type == LPFC_PHYSICAL_PORT) {
3467 		vport->cfg_restrict_login = 0;
3468 		return 0;
3469 	}
3470 	vport->cfg_restrict_login = val;
3471 	return 0;
3472 }
3473 
3474 /**
3475  * lpfc_restrict_login_set - Set the vport restrict login flag
3476  * @vport: lpfc vport structure pointer.
3477  * @val: contains the restrict login value.
3478  *
3479  * Description:
3480  * If val is not in a valid range then log a kernel error message and set
3481  * the vport restrict login to one.
3482  * If the port type is physical and the val is not zero log a kernel
3483  * error message, clear the restrict login flag and return zero.
3484  * Else set the restrict login flag to val.
3485  *
3486  * Returns:
3487  * zero if val is in range
3488  * -EINVAL val out of range
3489  **/
3490 static int
3491 lpfc_restrict_login_set(struct lpfc_vport *vport, int val)
3492 {
3493 	if (val < 0 || val > 1) {
3494 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3495 				 "0425 lpfc_restrict_login attribute cannot "
3496 				 "be set to %d, allowed range is [0, 1]\n",
3497 				 val);
3498 		vport->cfg_restrict_login = 1;
3499 		return -EINVAL;
3500 	}
3501 	if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) {
3502 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3503 				 "0468 lpfc_restrict_login must be 0 for "
3504 				 "Physical ports.\n");
3505 		vport->cfg_restrict_login = 0;
3506 		return 0;
3507 	}
3508 	vport->cfg_restrict_login = val;
3509 	return 0;
3510 }
3511 lpfc_vport_param_store(restrict_login);
3512 static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR,
3513 		   lpfc_restrict_login_show, lpfc_restrict_login_store);
3514 
3515 /*
3516 # Some disk devices have a "select ID" or "select Target" capability.
3517 # From a protocol standpoint "select ID" usually means select the
3518 # Fibre channel "ALPA".  In the FC-AL Profile there is an "informative
3519 # annex" which contains a table that maps a "select ID" (a number
3520 # between 0 and 7F) to an ALPA.  By default, for compatibility with
3521 # older drivers, the lpfc driver scans this table from low ALPA to high
3522 # ALPA.
3523 #
3524 # Turning on the scan-down variable (on  = 1, off = 0) will
3525 # cause the lpfc driver to use an inverted table, effectively
3526 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
3527 #
3528 # (Note: This "select ID" functionality is a LOOP ONLY characteristic
3529 # and will not work across a fabric. Also this parameter will take
3530 # effect only in the case when ALPA map is not available.)
3531 */
3532 LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1,
3533 		  "Start scanning for devices from highest ALPA to lowest");
3534 
3535 /*
3536 # lpfc_topology:  link topology for init link
3537 #            0x0  = attempt loop mode then point-to-point
3538 #            0x01 = internal loopback mode
3539 #            0x02 = attempt point-to-point mode only
3540 #            0x04 = attempt loop mode only
3541 #            0x06 = attempt point-to-point mode then loop
3542 # Set point-to-point mode if you want to run as an N_Port.
3543 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
3544 # Default value is 0.
3545 */
3546 LPFC_ATTR(topology, 0, 0, 6,
3547 	"Select Fibre Channel topology");
3548 
3549 /**
3550  * lpfc_topology_set - Set the adapters topology field
3551  * @phba: lpfc_hba pointer.
3552  * @val: topology value.
3553  *
3554  * Description:
3555  * If val is in a valid range then set the adapter's topology field and
3556  * issue a lip; if the lip fails reset the topology to the old value.
3557  *
3558  * If the value is not in range log a kernel error message and return an error.
3559  *
3560  * Returns:
3561  * zero if val is in range and lip okay
3562  * non-zero return value from lpfc_issue_lip()
3563  * -EINVAL val out of range
3564  **/
3565 static ssize_t
3566 lpfc_topology_store(struct device *dev, struct device_attribute *attr,
3567 			const char *buf, size_t count)
3568 {
3569 	struct Scsi_Host  *shost = class_to_shost(dev);
3570 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3571 	struct lpfc_hba   *phba = vport->phba;
3572 	int val = 0;
3573 	int nolip = 0;
3574 	const char *val_buf = buf;
3575 	int err;
3576 	uint32_t prev_val;
3577 
3578 	if (!strncmp(buf, "nolip ", strlen("nolip "))) {
3579 		nolip = 1;
3580 		val_buf = &buf[strlen("nolip ")];
3581 	}
3582 
3583 	if (!isdigit(val_buf[0]))
3584 		return -EINVAL;
3585 	if (sscanf(val_buf, "%i", &val) != 1)
3586 		return -EINVAL;
3587 
3588 	if (val >= 0 && val <= 6) {
3589 		prev_val = phba->cfg_topology;
3590 		if (phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G &&
3591 			val == 4) {
3592 			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3593 				"3113 Loop mode not supported at speed %d\n",
3594 				val);
3595 			return -EINVAL;
3596 		}
3597 		if (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC &&
3598 			val == 4) {
3599 			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3600 				"3114 Loop mode not supported\n");
3601 			return -EINVAL;
3602 		}
3603 		phba->cfg_topology = val;
3604 		if (nolip)
3605 			return strlen(buf);
3606 
3607 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3608 			"3054 lpfc_topology changed from %d to %d\n",
3609 			prev_val, val);
3610 		if (prev_val != val && phba->sli_rev == LPFC_SLI_REV4)
3611 			phba->fc_topology_changed = 1;
3612 		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
3613 		if (err) {
3614 			phba->cfg_topology = prev_val;
3615 			return -EINVAL;
3616 		} else
3617 			return strlen(buf);
3618 	}
3619 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3620 		"%d:0467 lpfc_topology attribute cannot be set to %d, "
3621 		"allowed range is [0, 6]\n",
3622 		phba->brd_no, val);
3623 	return -EINVAL;
3624 }
3625 
3626 lpfc_param_show(topology)
3627 static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR,
3628 		lpfc_topology_show, lpfc_topology_store);
3629 
3630 /**
3631  * lpfc_static_vport_show: Read callback function for
3632  *   lpfc_static_vport sysfs file.
3633  * @dev: Pointer to class device object.
3634  * @attr: device attribute structure.
3635  * @buf: Data buffer.
3636  *
3637  * This function is the read call back function for
3638  * lpfc_static_vport sysfs file. The lpfc_static_vport
3639  * sysfs file report the mageability of the vport.
3640  **/
3641 static ssize_t
3642 lpfc_static_vport_show(struct device *dev, struct device_attribute *attr,
3643 			 char *buf)
3644 {
3645 	struct Scsi_Host  *shost = class_to_shost(dev);
3646 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3647 	if (vport->vport_flag & STATIC_VPORT)
3648 		sprintf(buf, "1\n");
3649 	else
3650 		sprintf(buf, "0\n");
3651 
3652 	return strlen(buf);
3653 }
3654 
3655 /*
3656  * Sysfs attribute to control the statistical data collection.
3657  */
3658 static DEVICE_ATTR(lpfc_static_vport, S_IRUGO,
3659 		   lpfc_static_vport_show, NULL);
3660 
3661 /**
3662  * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
3663  * @dev: Pointer to class device.
3664  * @buf: Data buffer.
3665  * @count: Size of the data buffer.
3666  *
3667  * This function get called when a user write to the lpfc_stat_data_ctrl
3668  * sysfs file. This function parse the command written to the sysfs file
3669  * and take appropriate action. These commands are used for controlling
3670  * driver statistical data collection.
3671  * Following are the command this function handles.
3672  *
3673  *    setbucket <bucket_type> <base> <step>
3674  *			       = Set the latency buckets.
3675  *    destroybucket            = destroy all the buckets.
3676  *    start                    = start data collection
3677  *    stop                     = stop data collection
3678  *    reset                    = reset the collected data
3679  **/
3680 static ssize_t
3681 lpfc_stat_data_ctrl_store(struct device *dev, struct device_attribute *attr,
3682 			  const char *buf, size_t count)
3683 {
3684 	struct Scsi_Host  *shost = class_to_shost(dev);
3685 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3686 	struct lpfc_hba   *phba = vport->phba;
3687 #define LPFC_MAX_DATA_CTRL_LEN 1024
3688 	static char bucket_data[LPFC_MAX_DATA_CTRL_LEN];
3689 	unsigned long i;
3690 	char *str_ptr, *token;
3691 	struct lpfc_vport **vports;
3692 	struct Scsi_Host *v_shost;
3693 	char *bucket_type_str, *base_str, *step_str;
3694 	unsigned long base, step, bucket_type;
3695 
3696 	if (!strncmp(buf, "setbucket", strlen("setbucket"))) {
3697 		if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1))
3698 			return -EINVAL;
3699 
3700 		strncpy(bucket_data, buf, LPFC_MAX_DATA_CTRL_LEN);
3701 		str_ptr = &bucket_data[0];
3702 		/* Ignore this token - this is command token */
3703 		token = strsep(&str_ptr, "\t ");
3704 		if (!token)
3705 			return -EINVAL;
3706 
3707 		bucket_type_str = strsep(&str_ptr, "\t ");
3708 		if (!bucket_type_str)
3709 			return -EINVAL;
3710 
3711 		if (!strncmp(bucket_type_str, "linear", strlen("linear")))
3712 			bucket_type = LPFC_LINEAR_BUCKET;
3713 		else if (!strncmp(bucket_type_str, "power2", strlen("power2")))
3714 			bucket_type = LPFC_POWER2_BUCKET;
3715 		else
3716 			return -EINVAL;
3717 
3718 		base_str = strsep(&str_ptr, "\t ");
3719 		if (!base_str)
3720 			return -EINVAL;
3721 		base = simple_strtoul(base_str, NULL, 0);
3722 
3723 		step_str = strsep(&str_ptr, "\t ");
3724 		if (!step_str)
3725 			return -EINVAL;
3726 		step = simple_strtoul(step_str, NULL, 0);
3727 		if (!step)
3728 			return -EINVAL;
3729 
3730 		/* Block the data collection for every vport */
3731 		vports = lpfc_create_vport_work_array(phba);
3732 		if (vports == NULL)
3733 			return -ENOMEM;
3734 
3735 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3736 			v_shost = lpfc_shost_from_vport(vports[i]);
3737 			spin_lock_irq(v_shost->host_lock);
3738 			/* Block and reset data collection */
3739 			vports[i]->stat_data_blocked = 1;
3740 			if (vports[i]->stat_data_enabled)
3741 				lpfc_vport_reset_stat_data(vports[i]);
3742 			spin_unlock_irq(v_shost->host_lock);
3743 		}
3744 
3745 		/* Set the bucket attributes */
3746 		phba->bucket_type = bucket_type;
3747 		phba->bucket_base = base;
3748 		phba->bucket_step = step;
3749 
3750 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3751 			v_shost = lpfc_shost_from_vport(vports[i]);
3752 
3753 			/* Unblock data collection */
3754 			spin_lock_irq(v_shost->host_lock);
3755 			vports[i]->stat_data_blocked = 0;
3756 			spin_unlock_irq(v_shost->host_lock);
3757 		}
3758 		lpfc_destroy_vport_work_array(phba, vports);
3759 		return strlen(buf);
3760 	}
3761 
3762 	if (!strncmp(buf, "destroybucket", strlen("destroybucket"))) {
3763 		vports = lpfc_create_vport_work_array(phba);
3764 		if (vports == NULL)
3765 			return -ENOMEM;
3766 
3767 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3768 			v_shost = lpfc_shost_from_vport(vports[i]);
3769 			spin_lock_irq(shost->host_lock);
3770 			vports[i]->stat_data_blocked = 1;
3771 			lpfc_free_bucket(vport);
3772 			vport->stat_data_enabled = 0;
3773 			vports[i]->stat_data_blocked = 0;
3774 			spin_unlock_irq(shost->host_lock);
3775 		}
3776 		lpfc_destroy_vport_work_array(phba, vports);
3777 		phba->bucket_type = LPFC_NO_BUCKET;
3778 		phba->bucket_base = 0;
3779 		phba->bucket_step = 0;
3780 		return strlen(buf);
3781 	}
3782 
3783 	if (!strncmp(buf, "start", strlen("start"))) {
3784 		/* If no buckets configured return error */
3785 		if (phba->bucket_type == LPFC_NO_BUCKET)
3786 			return -EINVAL;
3787 		spin_lock_irq(shost->host_lock);
3788 		if (vport->stat_data_enabled) {
3789 			spin_unlock_irq(shost->host_lock);
3790 			return strlen(buf);
3791 		}
3792 		lpfc_alloc_bucket(vport);
3793 		vport->stat_data_enabled = 1;
3794 		spin_unlock_irq(shost->host_lock);
3795 		return strlen(buf);
3796 	}
3797 
3798 	if (!strncmp(buf, "stop", strlen("stop"))) {
3799 		spin_lock_irq(shost->host_lock);
3800 		if (vport->stat_data_enabled == 0) {
3801 			spin_unlock_irq(shost->host_lock);
3802 			return strlen(buf);
3803 		}
3804 		lpfc_free_bucket(vport);
3805 		vport->stat_data_enabled = 0;
3806 		spin_unlock_irq(shost->host_lock);
3807 		return strlen(buf);
3808 	}
3809 
3810 	if (!strncmp(buf, "reset", strlen("reset"))) {
3811 		if ((phba->bucket_type == LPFC_NO_BUCKET)
3812 			|| !vport->stat_data_enabled)
3813 			return strlen(buf);
3814 		spin_lock_irq(shost->host_lock);
3815 		vport->stat_data_blocked = 1;
3816 		lpfc_vport_reset_stat_data(vport);
3817 		vport->stat_data_blocked = 0;
3818 		spin_unlock_irq(shost->host_lock);
3819 		return strlen(buf);
3820 	}
3821 	return -EINVAL;
3822 }
3823 
3824 
3825 /**
3826  * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file
3827  * @dev: Pointer to class device object.
3828  * @buf: Data buffer.
3829  *
3830  * This function is the read call back function for
3831  * lpfc_stat_data_ctrl sysfs file. This function report the
3832  * current statistical data collection state.
3833  **/
3834 static ssize_t
3835 lpfc_stat_data_ctrl_show(struct device *dev, struct device_attribute *attr,
3836 			 char *buf)
3837 {
3838 	struct Scsi_Host  *shost = class_to_shost(dev);
3839 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3840 	struct lpfc_hba   *phba = vport->phba;
3841 	int index = 0;
3842 	int i;
3843 	char *bucket_type;
3844 	unsigned long bucket_value;
3845 
3846 	switch (phba->bucket_type) {
3847 	case LPFC_LINEAR_BUCKET:
3848 		bucket_type = "linear";
3849 		break;
3850 	case LPFC_POWER2_BUCKET:
3851 		bucket_type = "power2";
3852 		break;
3853 	default:
3854 		bucket_type = "No Bucket";
3855 		break;
3856 	}
3857 
3858 	sprintf(&buf[index], "Statistical Data enabled :%d, "
3859 		"blocked :%d, Bucket type :%s, Bucket base :%d,"
3860 		" Bucket step :%d\nLatency Ranges :",
3861 		vport->stat_data_enabled, vport->stat_data_blocked,
3862 		bucket_type, phba->bucket_base, phba->bucket_step);
3863 	index = strlen(buf);
3864 	if (phba->bucket_type != LPFC_NO_BUCKET) {
3865 		for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
3866 			if (phba->bucket_type == LPFC_LINEAR_BUCKET)
3867 				bucket_value = phba->bucket_base +
3868 					phba->bucket_step * i;
3869 			else
3870 				bucket_value = phba->bucket_base +
3871 				(1 << i) * phba->bucket_step;
3872 
3873 			if (index + 10 > PAGE_SIZE)
3874 				break;
3875 			sprintf(&buf[index], "%08ld ", bucket_value);
3876 			index = strlen(buf);
3877 		}
3878 	}
3879 	sprintf(&buf[index], "\n");
3880 	return strlen(buf);
3881 }
3882 
3883 /*
3884  * Sysfs attribute to control the statistical data collection.
3885  */
3886 static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR,
3887 		   lpfc_stat_data_ctrl_show, lpfc_stat_data_ctrl_store);
3888 
3889 /*
3890  * lpfc_drvr_stat_data: sysfs attr to get driver statistical data.
3891  */
3892 
3893 /*
3894  * Each Bucket takes 11 characters and 1 new line + 17 bytes WWN
3895  * for each target.
3896  */
3897 #define STAT_DATA_SIZE_PER_TARGET(NUM_BUCKETS) ((NUM_BUCKETS) * 11 + 18)
3898 #define MAX_STAT_DATA_SIZE_PER_TARGET \
3899 	STAT_DATA_SIZE_PER_TARGET(LPFC_MAX_BUCKET_COUNT)
3900 
3901 
3902 /**
3903  * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
3904  * @filp: sysfs file
3905  * @kobj: Pointer to the kernel object
3906  * @bin_attr: Attribute object
3907  * @buff: Buffer pointer
3908  * @off: File offset
3909  * @count: Buffer size
3910  *
3911  * This function is the read call back function for lpfc_drvr_stat_data
3912  * sysfs file. This function export the statistical data to user
3913  * applications.
3914  **/
3915 static ssize_t
3916 sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
3917 		struct bin_attribute *bin_attr,
3918 		char *buf, loff_t off, size_t count)
3919 {
3920 	struct device *dev = container_of(kobj, struct device,
3921 		kobj);
3922 	struct Scsi_Host  *shost = class_to_shost(dev);
3923 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3924 	struct lpfc_hba   *phba = vport->phba;
3925 	int i = 0, index = 0;
3926 	unsigned long nport_index;
3927 	struct lpfc_nodelist *ndlp = NULL;
3928 	nport_index = (unsigned long)off /
3929 		MAX_STAT_DATA_SIZE_PER_TARGET;
3930 
3931 	if (!vport->stat_data_enabled || vport->stat_data_blocked
3932 		|| (phba->bucket_type == LPFC_NO_BUCKET))
3933 		return 0;
3934 
3935 	spin_lock_irq(shost->host_lock);
3936 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3937 		if (!NLP_CHK_NODE_ACT(ndlp) || !ndlp->lat_data)
3938 			continue;
3939 
3940 		if (nport_index > 0) {
3941 			nport_index--;
3942 			continue;
3943 		}
3944 
3945 		if ((index + MAX_STAT_DATA_SIZE_PER_TARGET)
3946 			> count)
3947 			break;
3948 
3949 		if (!ndlp->lat_data)
3950 			continue;
3951 
3952 		/* Print the WWN */
3953 		sprintf(&buf[index], "%02x%02x%02x%02x%02x%02x%02x%02x:",
3954 			ndlp->nlp_portname.u.wwn[0],
3955 			ndlp->nlp_portname.u.wwn[1],
3956 			ndlp->nlp_portname.u.wwn[2],
3957 			ndlp->nlp_portname.u.wwn[3],
3958 			ndlp->nlp_portname.u.wwn[4],
3959 			ndlp->nlp_portname.u.wwn[5],
3960 			ndlp->nlp_portname.u.wwn[6],
3961 			ndlp->nlp_portname.u.wwn[7]);
3962 
3963 		index = strlen(buf);
3964 
3965 		for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
3966 			sprintf(&buf[index], "%010u,",
3967 				ndlp->lat_data[i].cmd_count);
3968 			index = strlen(buf);
3969 		}
3970 		sprintf(&buf[index], "\n");
3971 		index = strlen(buf);
3972 	}
3973 	spin_unlock_irq(shost->host_lock);
3974 	return index;
3975 }
3976 
3977 static struct bin_attribute sysfs_drvr_stat_data_attr = {
3978 	.attr = {
3979 		.name = "lpfc_drvr_stat_data",
3980 		.mode = S_IRUSR,
3981 	},
3982 	.size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET,
3983 	.read = sysfs_drvr_stat_data_read,
3984 	.write = NULL,
3985 };
3986 
3987 /*
3988 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
3989 # connection.
3990 # Value range is [0,16]. Default value is 0.
3991 */
3992 /**
3993  * lpfc_link_speed_set - Set the adapters link speed
3994  * @phba: lpfc_hba pointer.
3995  * @val: link speed value.
3996  *
3997  * Description:
3998  * If val is in a valid range then set the adapter's link speed field and
3999  * issue a lip; if the lip fails reset the link speed to the old value.
4000  *
4001  * Notes:
4002  * If the value is not in range log a kernel error message and return an error.
4003  *
4004  * Returns:
4005  * zero if val is in range and lip okay.
4006  * non-zero return value from lpfc_issue_lip()
4007  * -EINVAL val out of range
4008  **/
4009 static ssize_t
4010 lpfc_link_speed_store(struct device *dev, struct device_attribute *attr,
4011 		const char *buf, size_t count)
4012 {
4013 	struct Scsi_Host  *shost = class_to_shost(dev);
4014 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4015 	struct lpfc_hba   *phba = vport->phba;
4016 	int val = LPFC_USER_LINK_SPEED_AUTO;
4017 	int nolip = 0;
4018 	const char *val_buf = buf;
4019 	int err;
4020 	uint32_t prev_val, if_type;
4021 
4022 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
4023 	if (if_type == LPFC_SLI_INTF_IF_TYPE_2 &&
4024 	    phba->hba_flag & HBA_FORCED_LINK_SPEED)
4025 		return -EPERM;
4026 
4027 	if (!strncmp(buf, "nolip ", strlen("nolip "))) {
4028 		nolip = 1;
4029 		val_buf = &buf[strlen("nolip ")];
4030 	}
4031 
4032 	if (!isdigit(val_buf[0]))
4033 		return -EINVAL;
4034 	if (sscanf(val_buf, "%i", &val) != 1)
4035 		return -EINVAL;
4036 
4037 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4038 		"3055 lpfc_link_speed changed from %d to %d %s\n",
4039 		phba->cfg_link_speed, val, nolip ? "(nolip)" : "(lip)");
4040 
4041 	if (((val == LPFC_USER_LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) ||
4042 	    ((val == LPFC_USER_LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) ||
4043 	    ((val == LPFC_USER_LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) ||
4044 	    ((val == LPFC_USER_LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) ||
4045 	    ((val == LPFC_USER_LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)) ||
4046 	    ((val == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb)) ||
4047 	    ((val == LPFC_USER_LINK_SPEED_32G) && !(phba->lmt & LMT_32Gb))) {
4048 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4049 				"2879 lpfc_link_speed attribute cannot be set "
4050 				"to %d. Speed is not supported by this port.\n",
4051 				val);
4052 		return -EINVAL;
4053 	}
4054 	if (val == LPFC_USER_LINK_SPEED_16G &&
4055 		 phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4056 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4057 				"3112 lpfc_link_speed attribute cannot be set "
4058 				"to %d. Speed is not supported in loop mode.\n",
4059 				val);
4060 		return -EINVAL;
4061 	}
4062 	if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) &&
4063 	    (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) {
4064 		prev_val = phba->cfg_link_speed;
4065 		phba->cfg_link_speed = val;
4066 		if (nolip)
4067 			return strlen(buf);
4068 
4069 		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
4070 		if (err) {
4071 			phba->cfg_link_speed = prev_val;
4072 			return -EINVAL;
4073 		} else
4074 			return strlen(buf);
4075 	}
4076 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4077 		"0469 lpfc_link_speed attribute cannot be set to %d, "
4078 		"allowed values are ["LPFC_LINK_SPEED_STRING"]\n", val);
4079 	return -EINVAL;
4080 }
4081 
4082 static int lpfc_link_speed = 0;
4083 module_param(lpfc_link_speed, int, S_IRUGO);
4084 MODULE_PARM_DESC(lpfc_link_speed, "Select link speed");
4085 lpfc_param_show(link_speed)
4086 
4087 /**
4088  * lpfc_link_speed_init - Set the adapters link speed
4089  * @phba: lpfc_hba pointer.
4090  * @val: link speed value.
4091  *
4092  * Description:
4093  * If val is in a valid range then set the adapter's link speed field.
4094  *
4095  * Notes:
4096  * If the value is not in range log a kernel error message, clear the link
4097  * speed and return an error.
4098  *
4099  * Returns:
4100  * zero if val saved.
4101  * -EINVAL val out of range
4102  **/
4103 static int
4104 lpfc_link_speed_init(struct lpfc_hba *phba, int val)
4105 {
4106 	if (val == LPFC_USER_LINK_SPEED_16G && phba->cfg_topology == 4) {
4107 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4108 			"3111 lpfc_link_speed of %d cannot "
4109 			"support loop mode, setting topology to default.\n",
4110 			 val);
4111 		phba->cfg_topology = 0;
4112 	}
4113 	if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) &&
4114 	    (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) {
4115 		phba->cfg_link_speed = val;
4116 		return 0;
4117 	}
4118 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4119 			"0405 lpfc_link_speed attribute cannot "
4120 			"be set to %d, allowed values are "
4121 			"["LPFC_LINK_SPEED_STRING"]\n", val);
4122 	phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
4123 	return -EINVAL;
4124 }
4125 
4126 static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR,
4127 		   lpfc_link_speed_show, lpfc_link_speed_store);
4128 
4129 /*
4130 # lpfc_aer_support: Support PCIe device Advanced Error Reporting (AER)
4131 #       0  = aer disabled or not supported
4132 #       1  = aer supported and enabled (default)
4133 # Value range is [0,1]. Default value is 1.
4134 */
4135 LPFC_ATTR(aer_support, 1, 0, 1,
4136 	"Enable PCIe device AER support");
4137 lpfc_param_show(aer_support)
4138 
4139 /**
4140  * lpfc_aer_support_store - Set the adapter for aer support
4141  *
4142  * @dev: class device that is converted into a Scsi_host.
4143  * @attr: device attribute, not used.
4144  * @buf: containing enable or disable aer flag.
4145  * @count: unused variable.
4146  *
4147  * Description:
4148  * If the val is 1 and currently the device's AER capability was not
4149  * enabled, invoke the kernel's enable AER helper routine, trying to
4150  * enable the device's AER capability. If the helper routine enabling
4151  * AER returns success, update the device's cfg_aer_support flag to
4152  * indicate AER is supported by the device; otherwise, if the device
4153  * AER capability is already enabled to support AER, then do nothing.
4154  *
4155  * If the val is 0 and currently the device's AER support was enabled,
4156  * invoke the kernel's disable AER helper routine. After that, update
4157  * the device's cfg_aer_support flag to indicate AER is not supported
4158  * by the device; otherwise, if the device AER capability is already
4159  * disabled from supporting AER, then do nothing.
4160  *
4161  * Returns:
4162  * length of the buf on success if val is in range the intended mode
4163  * is supported.
4164  * -EINVAL if val out of range or intended mode is not supported.
4165  **/
4166 static ssize_t
4167 lpfc_aer_support_store(struct device *dev, struct device_attribute *attr,
4168 		       const char *buf, size_t count)
4169 {
4170 	struct Scsi_Host *shost = class_to_shost(dev);
4171 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4172 	struct lpfc_hba *phba = vport->phba;
4173 	int val = 0, rc = -EINVAL;
4174 
4175 	if (!isdigit(buf[0]))
4176 		return -EINVAL;
4177 	if (sscanf(buf, "%i", &val) != 1)
4178 		return -EINVAL;
4179 
4180 	switch (val) {
4181 	case 0:
4182 		if (phba->hba_flag & HBA_AER_ENABLED) {
4183 			rc = pci_disable_pcie_error_reporting(phba->pcidev);
4184 			if (!rc) {
4185 				spin_lock_irq(&phba->hbalock);
4186 				phba->hba_flag &= ~HBA_AER_ENABLED;
4187 				spin_unlock_irq(&phba->hbalock);
4188 				phba->cfg_aer_support = 0;
4189 				rc = strlen(buf);
4190 			} else
4191 				rc = -EPERM;
4192 		} else {
4193 			phba->cfg_aer_support = 0;
4194 			rc = strlen(buf);
4195 		}
4196 		break;
4197 	case 1:
4198 		if (!(phba->hba_flag & HBA_AER_ENABLED)) {
4199 			rc = pci_enable_pcie_error_reporting(phba->pcidev);
4200 			if (!rc) {
4201 				spin_lock_irq(&phba->hbalock);
4202 				phba->hba_flag |= HBA_AER_ENABLED;
4203 				spin_unlock_irq(&phba->hbalock);
4204 				phba->cfg_aer_support = 1;
4205 				rc = strlen(buf);
4206 			} else
4207 				 rc = -EPERM;
4208 		} else {
4209 			phba->cfg_aer_support = 1;
4210 			rc = strlen(buf);
4211 		}
4212 		break;
4213 	default:
4214 		rc = -EINVAL;
4215 		break;
4216 	}
4217 	return rc;
4218 }
4219 
4220 static DEVICE_ATTR(lpfc_aer_support, S_IRUGO | S_IWUSR,
4221 		   lpfc_aer_support_show, lpfc_aer_support_store);
4222 
4223 /**
4224  * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled device
4225  * @dev: class device that is converted into a Scsi_host.
4226  * @attr: device attribute, not used.
4227  * @buf: containing flag 1 for aer cleanup state.
4228  * @count: unused variable.
4229  *
4230  * Description:
4231  * If the @buf contains 1 and the device currently has the AER support
4232  * enabled, then invokes the kernel AER helper routine
4233  * pci_cleanup_aer_uncorrect_error_status to clean up the uncorrectable
4234  * error status register.
4235  *
4236  * Notes:
4237  *
4238  * Returns:
4239  * -EINVAL if the buf does not contain the 1 or the device is not currently
4240  * enabled with the AER support.
4241  **/
4242 static ssize_t
4243 lpfc_aer_cleanup_state(struct device *dev, struct device_attribute *attr,
4244 		       const char *buf, size_t count)
4245 {
4246 	struct Scsi_Host  *shost = class_to_shost(dev);
4247 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4248 	struct lpfc_hba   *phba = vport->phba;
4249 	int val, rc = -1;
4250 
4251 	if (!isdigit(buf[0]))
4252 		return -EINVAL;
4253 	if (sscanf(buf, "%i", &val) != 1)
4254 		return -EINVAL;
4255 	if (val != 1)
4256 		return -EINVAL;
4257 
4258 	if (phba->hba_flag & HBA_AER_ENABLED)
4259 		rc = pci_cleanup_aer_uncorrect_error_status(phba->pcidev);
4260 
4261 	if (rc == 0)
4262 		return strlen(buf);
4263 	else
4264 		return -EPERM;
4265 }
4266 
4267 static DEVICE_ATTR(lpfc_aer_state_cleanup, S_IWUSR, NULL,
4268 		   lpfc_aer_cleanup_state);
4269 
4270 /**
4271  * lpfc_sriov_nr_virtfn_store - Enable the adapter for sr-iov virtual functions
4272  *
4273  * @dev: class device that is converted into a Scsi_host.
4274  * @attr: device attribute, not used.
4275  * @buf: containing the string the number of vfs to be enabled.
4276  * @count: unused variable.
4277  *
4278  * Description:
4279  * When this api is called either through user sysfs, the driver shall
4280  * try to enable or disable SR-IOV virtual functions according to the
4281  * following:
4282  *
4283  * If zero virtual function has been enabled to the physical function,
4284  * the driver shall invoke the pci enable virtual function api trying
4285  * to enable the virtual functions. If the nr_vfn provided is greater
4286  * than the maximum supported, the maximum virtual function number will
4287  * be used for invoking the api; otherwise, the nr_vfn provided shall
4288  * be used for invoking the api. If the api call returned success, the
4289  * actual number of virtual functions enabled will be set to the driver
4290  * cfg_sriov_nr_virtfn; otherwise, -EINVAL shall be returned and driver
4291  * cfg_sriov_nr_virtfn remains zero.
4292  *
4293  * If none-zero virtual functions have already been enabled to the
4294  * physical function, as reflected by the driver's cfg_sriov_nr_virtfn,
4295  * -EINVAL will be returned and the driver does nothing;
4296  *
4297  * If the nr_vfn provided is zero and none-zero virtual functions have
4298  * been enabled, as indicated by the driver's cfg_sriov_nr_virtfn, the
4299  * disabling virtual function api shall be invoded to disable all the
4300  * virtual functions and driver's cfg_sriov_nr_virtfn shall be set to
4301  * zero. Otherwise, if zero virtual function has been enabled, do
4302  * nothing.
4303  *
4304  * Returns:
4305  * length of the buf on success if val is in range the intended mode
4306  * is supported.
4307  * -EINVAL if val out of range or intended mode is not supported.
4308  **/
4309 static ssize_t
4310 lpfc_sriov_nr_virtfn_store(struct device *dev, struct device_attribute *attr,
4311 			 const char *buf, size_t count)
4312 {
4313 	struct Scsi_Host *shost = class_to_shost(dev);
4314 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4315 	struct lpfc_hba *phba = vport->phba;
4316 	struct pci_dev *pdev = phba->pcidev;
4317 	int val = 0, rc = -EINVAL;
4318 
4319 	/* Sanity check on user data */
4320 	if (!isdigit(buf[0]))
4321 		return -EINVAL;
4322 	if (sscanf(buf, "%i", &val) != 1)
4323 		return -EINVAL;
4324 	if (val < 0)
4325 		return -EINVAL;
4326 
4327 	/* Request disabling virtual functions */
4328 	if (val == 0) {
4329 		if (phba->cfg_sriov_nr_virtfn > 0) {
4330 			pci_disable_sriov(pdev);
4331 			phba->cfg_sriov_nr_virtfn = 0;
4332 		}
4333 		return strlen(buf);
4334 	}
4335 
4336 	/* Request enabling virtual functions */
4337 	if (phba->cfg_sriov_nr_virtfn > 0) {
4338 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4339 				"3018 There are %d virtual functions "
4340 				"enabled on physical function.\n",
4341 				phba->cfg_sriov_nr_virtfn);
4342 		return -EEXIST;
4343 	}
4344 
4345 	if (val <= LPFC_MAX_VFN_PER_PFN)
4346 		phba->cfg_sriov_nr_virtfn = val;
4347 	else {
4348 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4349 				"3019 Enabling %d virtual functions is not "
4350 				"allowed.\n", val);
4351 		return -EINVAL;
4352 	}
4353 
4354 	rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn);
4355 	if (rc) {
4356 		phba->cfg_sriov_nr_virtfn = 0;
4357 		rc = -EPERM;
4358 	} else
4359 		rc = strlen(buf);
4360 
4361 	return rc;
4362 }
4363 
4364 LPFC_ATTR(sriov_nr_virtfn, LPFC_DEF_VFN_PER_PFN, 0, LPFC_MAX_VFN_PER_PFN,
4365 	"Enable PCIe device SR-IOV virtual fn");
4366 
4367 lpfc_param_show(sriov_nr_virtfn)
4368 static DEVICE_ATTR(lpfc_sriov_nr_virtfn, S_IRUGO | S_IWUSR,
4369 		   lpfc_sriov_nr_virtfn_show, lpfc_sriov_nr_virtfn_store);
4370 
4371 /**
4372  * lpfc_request_firmware_store - Request for Linux generic firmware upgrade
4373  *
4374  * @dev: class device that is converted into a Scsi_host.
4375  * @attr: device attribute, not used.
4376  * @buf: containing the string the number of vfs to be enabled.
4377  * @count: unused variable.
4378  *
4379  * Description:
4380  *
4381  * Returns:
4382  * length of the buf on success if val is in range the intended mode
4383  * is supported.
4384  * -EINVAL if val out of range or intended mode is not supported.
4385  **/
4386 static ssize_t
4387 lpfc_request_firmware_upgrade_store(struct device *dev,
4388 				    struct device_attribute *attr,
4389 				    const char *buf, size_t count)
4390 {
4391 	struct Scsi_Host *shost = class_to_shost(dev);
4392 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4393 	struct lpfc_hba *phba = vport->phba;
4394 	int val = 0, rc = -EINVAL;
4395 
4396 	/* Sanity check on user data */
4397 	if (!isdigit(buf[0]))
4398 		return -EINVAL;
4399 	if (sscanf(buf, "%i", &val) != 1)
4400 		return -EINVAL;
4401 	if (val != 1)
4402 		return -EINVAL;
4403 
4404 	rc = lpfc_sli4_request_firmware_update(phba, RUN_FW_UPGRADE);
4405 	if (rc)
4406 		rc = -EPERM;
4407 	else
4408 		rc = strlen(buf);
4409 	return rc;
4410 }
4411 
4412 static int lpfc_req_fw_upgrade;
4413 module_param(lpfc_req_fw_upgrade, int, S_IRUGO|S_IWUSR);
4414 MODULE_PARM_DESC(lpfc_req_fw_upgrade, "Enable Linux generic firmware upgrade");
4415 lpfc_param_show(request_firmware_upgrade)
4416 
4417 /**
4418  * lpfc_request_firmware_upgrade_init - Enable initial linux generic fw upgrade
4419  * @phba: lpfc_hba pointer.
4420  * @val: 0 or 1.
4421  *
4422  * Description:
4423  * Set the initial Linux generic firmware upgrade enable or disable flag.
4424  *
4425  * Returns:
4426  * zero if val saved.
4427  * -EINVAL val out of range
4428  **/
4429 static int
4430 lpfc_request_firmware_upgrade_init(struct lpfc_hba *phba, int val)
4431 {
4432 	if (val >= 0 && val <= 1) {
4433 		phba->cfg_request_firmware_upgrade = val;
4434 		return 0;
4435 	}
4436 	return -EINVAL;
4437 }
4438 static DEVICE_ATTR(lpfc_req_fw_upgrade, S_IRUGO | S_IWUSR,
4439 		   lpfc_request_firmware_upgrade_show,
4440 		   lpfc_request_firmware_upgrade_store);
4441 
4442 /**
4443  * lpfc_fcp_imax_store
4444  *
4445  * @dev: class device that is converted into a Scsi_host.
4446  * @attr: device attribute, not used.
4447  * @buf: string with the number of fast-path FCP interrupts per second.
4448  * @count: unused variable.
4449  *
4450  * Description:
4451  * If val is in a valid range [636,651042], then set the adapter's
4452  * maximum number of fast-path FCP interrupts per second.
4453  *
4454  * Returns:
4455  * length of the buf on success if val is in range the intended mode
4456  * is supported.
4457  * -EINVAL if val out of range or intended mode is not supported.
4458  **/
4459 static ssize_t
4460 lpfc_fcp_imax_store(struct device *dev, struct device_attribute *attr,
4461 			 const char *buf, size_t count)
4462 {
4463 	struct Scsi_Host *shost = class_to_shost(dev);
4464 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4465 	struct lpfc_hba *phba = vport->phba;
4466 	int val = 0, i;
4467 
4468 	/* fcp_imax is only valid for SLI4 */
4469 	if (phba->sli_rev != LPFC_SLI_REV4)
4470 		return -EINVAL;
4471 
4472 	/* Sanity check on user data */
4473 	if (!isdigit(buf[0]))
4474 		return -EINVAL;
4475 	if (sscanf(buf, "%i", &val) != 1)
4476 		return -EINVAL;
4477 
4478 	/*
4479 	 * Value range for the HBA is [5000,5000000]
4480 	 * The value for each EQ depends on how many EQs are configured.
4481 	 * Allow value == 0
4482 	 */
4483 	if (val && (val < LPFC_MIN_IMAX || val > LPFC_MAX_IMAX))
4484 		return -EINVAL;
4485 
4486 	phba->cfg_fcp_imax = (uint32_t)val;
4487 	phba->initial_imax = phba->cfg_fcp_imax;
4488 
4489 	for (i = 0; i < phba->io_channel_irqs; i += LPFC_MAX_EQ_DELAY_EQID_CNT)
4490 		lpfc_modify_hba_eq_delay(phba, i, LPFC_MAX_EQ_DELAY_EQID_CNT,
4491 					 val);
4492 
4493 	return strlen(buf);
4494 }
4495 
4496 /*
4497 # lpfc_fcp_imax: The maximum number of fast-path FCP interrupts per second
4498 # for the HBA.
4499 #
4500 # Value range is [5,000 to 5,000,000]. Default value is 50,000.
4501 */
4502 static int lpfc_fcp_imax = LPFC_DEF_IMAX;
4503 module_param(lpfc_fcp_imax, int, S_IRUGO|S_IWUSR);
4504 MODULE_PARM_DESC(lpfc_fcp_imax,
4505 	    "Set the maximum number of FCP interrupts per second per HBA");
4506 lpfc_param_show(fcp_imax)
4507 
4508 /**
4509  * lpfc_fcp_imax_init - Set the initial sr-iov virtual function enable
4510  * @phba: lpfc_hba pointer.
4511  * @val: link speed value.
4512  *
4513  * Description:
4514  * If val is in a valid range [636,651042], then initialize the adapter's
4515  * maximum number of fast-path FCP interrupts per second.
4516  *
4517  * Returns:
4518  * zero if val saved.
4519  * -EINVAL val out of range
4520  **/
4521 static int
4522 lpfc_fcp_imax_init(struct lpfc_hba *phba, int val)
4523 {
4524 	if (phba->sli_rev != LPFC_SLI_REV4) {
4525 		phba->cfg_fcp_imax = 0;
4526 		return 0;
4527 	}
4528 
4529 	if ((val >= LPFC_MIN_IMAX && val <= LPFC_MAX_IMAX) ||
4530 	    (val == 0)) {
4531 		phba->cfg_fcp_imax = val;
4532 		return 0;
4533 	}
4534 
4535 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4536 			"3016 lpfc_fcp_imax: %d out of range, using default\n",
4537 			val);
4538 	phba->cfg_fcp_imax = LPFC_DEF_IMAX;
4539 
4540 	return 0;
4541 }
4542 
4543 static DEVICE_ATTR(lpfc_fcp_imax, S_IRUGO | S_IWUSR,
4544 		   lpfc_fcp_imax_show, lpfc_fcp_imax_store);
4545 
4546 /*
4547  * lpfc_auto_imax: Controls Auto-interrupt coalescing values support.
4548  *       0       No auto_imax support
4549  *       1       auto imax on
4550  * Auto imax will change the value of fcp_imax on a per EQ basis, using
4551  * the EQ Delay Multiplier, depending on the activity for that EQ.
4552  * Value range [0,1]. Default value is 1.
4553  */
4554 LPFC_ATTR_RW(auto_imax, 1, 0, 1, "Enable Auto imax");
4555 
4556 /**
4557  * lpfc_state_show - Display current driver CPU affinity
4558  * @dev: class converted to a Scsi_host structure.
4559  * @attr: device attribute, not used.
4560  * @buf: on return contains text describing the state of the link.
4561  *
4562  * Returns: size of formatted string.
4563  **/
4564 static ssize_t
4565 lpfc_fcp_cpu_map_show(struct device *dev, struct device_attribute *attr,
4566 		      char *buf)
4567 {
4568 	struct Scsi_Host  *shost = class_to_shost(dev);
4569 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4570 	struct lpfc_hba   *phba = vport->phba;
4571 	struct lpfc_vector_map_info *cpup;
4572 	int  len = 0;
4573 
4574 	if ((phba->sli_rev != LPFC_SLI_REV4) ||
4575 	    (phba->intr_type != MSIX))
4576 		return len;
4577 
4578 	switch (phba->cfg_fcp_cpu_map) {
4579 	case 0:
4580 		len += snprintf(buf + len, PAGE_SIZE-len,
4581 				"fcp_cpu_map: No mapping (%d)\n",
4582 				phba->cfg_fcp_cpu_map);
4583 		return len;
4584 	case 1:
4585 		len += snprintf(buf + len, PAGE_SIZE-len,
4586 				"fcp_cpu_map: HBA centric mapping (%d): "
4587 				"%d online CPUs\n",
4588 				phba->cfg_fcp_cpu_map,
4589 				phba->sli4_hba.num_online_cpu);
4590 		break;
4591 	case 2:
4592 		len += snprintf(buf + len, PAGE_SIZE-len,
4593 				"fcp_cpu_map: Driver centric mapping (%d): "
4594 				"%d online CPUs\n",
4595 				phba->cfg_fcp_cpu_map,
4596 				phba->sli4_hba.num_online_cpu);
4597 		break;
4598 	}
4599 
4600 	while (phba->sli4_hba.curr_disp_cpu < phba->sli4_hba.num_present_cpu) {
4601 		cpup = &phba->sli4_hba.cpu_map[phba->sli4_hba.curr_disp_cpu];
4602 
4603 		/* margin should fit in this and the truncated message */
4604 		if (cpup->irq == LPFC_VECTOR_MAP_EMPTY)
4605 			len += snprintf(buf + len, PAGE_SIZE-len,
4606 					"CPU %02d io_chan %02d "
4607 					"physid %d coreid %d\n",
4608 					phba->sli4_hba.curr_disp_cpu,
4609 					cpup->channel_id, cpup->phys_id,
4610 					cpup->core_id);
4611 		else
4612 			len += snprintf(buf + len, PAGE_SIZE-len,
4613 					"CPU %02d io_chan %02d "
4614 					"physid %d coreid %d IRQ %d\n",
4615 					phba->sli4_hba.curr_disp_cpu,
4616 					cpup->channel_id, cpup->phys_id,
4617 					cpup->core_id, cpup->irq);
4618 
4619 		phba->sli4_hba.curr_disp_cpu++;
4620 
4621 		/* display max number of CPUs keeping some margin */
4622 		if (phba->sli4_hba.curr_disp_cpu <
4623 				phba->sli4_hba.num_present_cpu &&
4624 				(len >= (PAGE_SIZE - 64))) {
4625 			len += snprintf(buf + len, PAGE_SIZE-len, "more...\n");
4626 			break;
4627 		}
4628 	}
4629 
4630 	if (phba->sli4_hba.curr_disp_cpu == phba->sli4_hba.num_present_cpu)
4631 		phba->sli4_hba.curr_disp_cpu = 0;
4632 
4633 	return len;
4634 }
4635 
4636 /**
4637  * lpfc_fcp_cpu_map_store - Change CPU affinity of driver vectors
4638  * @dev: class device that is converted into a Scsi_host.
4639  * @attr: device attribute, not used.
4640  * @buf: one or more lpfc_polling_flags values.
4641  * @count: not used.
4642  *
4643  * Returns:
4644  * -EINVAL  - Not implemented yet.
4645  **/
4646 static ssize_t
4647 lpfc_fcp_cpu_map_store(struct device *dev, struct device_attribute *attr,
4648 		       const char *buf, size_t count)
4649 {
4650 	int status = -EINVAL;
4651 	return status;
4652 }
4653 
4654 /*
4655 # lpfc_fcp_cpu_map: Defines how to map CPUs to IRQ vectors
4656 # for the HBA.
4657 #
4658 # Value range is [0 to 2]. Default value is LPFC_DRIVER_CPU_MAP (2).
4659 #	0 - Do not affinitze IRQ vectors
4660 #	1 - Affintize HBA vectors with respect to each HBA
4661 #	    (start with CPU0 for each HBA)
4662 #	2 - Affintize HBA vectors with respect to the entire driver
4663 #	    (round robin thru all CPUs across all HBAs)
4664 */
4665 static int lpfc_fcp_cpu_map = LPFC_DRIVER_CPU_MAP;
4666 module_param(lpfc_fcp_cpu_map, int, S_IRUGO|S_IWUSR);
4667 MODULE_PARM_DESC(lpfc_fcp_cpu_map,
4668 		 "Defines how to map CPUs to IRQ vectors per HBA");
4669 
4670 /**
4671  * lpfc_fcp_cpu_map_init - Set the initial sr-iov virtual function enable
4672  * @phba: lpfc_hba pointer.
4673  * @val: link speed value.
4674  *
4675  * Description:
4676  * If val is in a valid range [0-2], then affinitze the adapter's
4677  * MSIX vectors.
4678  *
4679  * Returns:
4680  * zero if val saved.
4681  * -EINVAL val out of range
4682  **/
4683 static int
4684 lpfc_fcp_cpu_map_init(struct lpfc_hba *phba, int val)
4685 {
4686 	if (phba->sli_rev != LPFC_SLI_REV4) {
4687 		phba->cfg_fcp_cpu_map = 0;
4688 		return 0;
4689 	}
4690 
4691 	if (val >= LPFC_MIN_CPU_MAP && val <= LPFC_MAX_CPU_MAP) {
4692 		phba->cfg_fcp_cpu_map = val;
4693 		return 0;
4694 	}
4695 
4696 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4697 			"3326 lpfc_fcp_cpu_map: %d out of range, using "
4698 			"default\n", val);
4699 	phba->cfg_fcp_cpu_map = LPFC_DRIVER_CPU_MAP;
4700 
4701 	return 0;
4702 }
4703 
4704 static DEVICE_ATTR(lpfc_fcp_cpu_map, S_IRUGO | S_IWUSR,
4705 		   lpfc_fcp_cpu_map_show, lpfc_fcp_cpu_map_store);
4706 
4707 /*
4708 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
4709 # Value range is [2,3]. Default value is 3.
4710 */
4711 LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3,
4712 		  "Select Fibre Channel class of service for FCP sequences");
4713 
4714 /*
4715 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
4716 # is [0,1]. Default value is 0.
4717 */
4718 LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1,
4719 		   "Use ADISC on rediscovery to authenticate FCP devices");
4720 
4721 /*
4722 # lpfc_first_burst_size: First burst size to use on the NPorts
4723 # that support first burst.
4724 # Value range is [0,65536]. Default value is 0.
4725 */
4726 LPFC_VPORT_ATTR_RW(first_burst_size, 0, 0, 65536,
4727 		   "First burst size for Targets that support first burst");
4728 
4729 /*
4730 * lpfc_nvmet_fb_size: NVME Target mode supported first burst size.
4731 * When the driver is configured as an NVME target, this value is
4732 * communicated to the NVME initiator in the PRLI response.  It is
4733 * used only when the lpfc_nvme_enable_fb and lpfc_nvmet_support
4734 * parameters are set and the target is sending the PRLI RSP.
4735 * Parameter supported on physical port only - no NPIV support.
4736 * Value range is [0,65536]. Default value is 0.
4737 */
4738 LPFC_ATTR_RW(nvmet_fb_size, 0, 0, 65536,
4739 	     "NVME Target mode first burst size in 512B increments.");
4740 
4741 /*
4742  * lpfc_nvme_enable_fb: Enable NVME first burst on I and T functions.
4743  * For the Initiator (I), enabling this parameter means that an NVMET
4744  * PRLI response with FBA enabled and an FB_SIZE set to a nonzero value will be
4745  * processed by the initiator for subsequent NVME FCP IO. For the target
4746  * function (T), enabling this parameter qualifies the lpfc_nvmet_fb_size
4747  * driver parameter as the target function's first burst size returned to the
4748  * initiator in the target's NVME PRLI response. Parameter supported on physical
4749  * port only - no NPIV support.
4750  * Value range is [0,1]. Default value is 0 (disabled).
4751  */
4752 LPFC_ATTR_RW(nvme_enable_fb, 0, 0, 1,
4753 	     "Enable First Burst feature on I and T functions.");
4754 
4755 /*
4756 # lpfc_max_scsicmpl_time: Use scsi command completion time to control I/O queue
4757 # depth. Default value is 0. When the value of this parameter is zero the
4758 # SCSI command completion time is not used for controlling I/O queue depth. When
4759 # the parameter is set to a non-zero value, the I/O queue depth is controlled
4760 # to limit the I/O completion time to the parameter value.
4761 # The value is set in milliseconds.
4762 */
4763 LPFC_VPORT_ATTR(max_scsicmpl_time, 0, 0, 60000,
4764 	"Use command completion time to control queue depth");
4765 
4766 lpfc_vport_param_show(max_scsicmpl_time);
4767 static int
4768 lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val)
4769 {
4770 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4771 	struct lpfc_nodelist *ndlp, *next_ndlp;
4772 
4773 	if (val == vport->cfg_max_scsicmpl_time)
4774 		return 0;
4775 	if ((val < 0) || (val > 60000))
4776 		return -EINVAL;
4777 	vport->cfg_max_scsicmpl_time = val;
4778 
4779 	spin_lock_irq(shost->host_lock);
4780 	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4781 		if (!NLP_CHK_NODE_ACT(ndlp))
4782 			continue;
4783 		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4784 			continue;
4785 		ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4786 	}
4787 	spin_unlock_irq(shost->host_lock);
4788 	return 0;
4789 }
4790 lpfc_vport_param_store(max_scsicmpl_time);
4791 static DEVICE_ATTR(lpfc_max_scsicmpl_time, S_IRUGO | S_IWUSR,
4792 		   lpfc_max_scsicmpl_time_show,
4793 		   lpfc_max_scsicmpl_time_store);
4794 
4795 /*
4796 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
4797 # range is [0,1]. Default value is 0.
4798 */
4799 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
4800 
4801 /*
4802  * lpfc_io_sched: Determine scheduling algrithmn for issuing FCP cmds
4803  * range is [0,1]. Default value is 0.
4804  * For [0], FCP commands are issued to Work Queues ina round robin fashion.
4805  * For [1], FCP commands are issued to a Work Queue associated with the
4806  *          current CPU.
4807  *
4808  * LPFC_FCP_SCHED_ROUND_ROBIN == 0
4809  * LPFC_FCP_SCHED_BY_CPU == 1
4810  *
4811  * The driver dynamically sets this to 1 (BY_CPU) if it's able to set up cpu
4812  * affinity for FCP/NVME I/Os through Work Queues associated with the current
4813  * CPU. Otherwise, the default 0 (Round Robin) scheduling of FCP/NVME I/Os
4814  * through WQs will be used.
4815  */
4816 LPFC_ATTR_RW(fcp_io_sched, LPFC_FCP_SCHED_ROUND_ROBIN,
4817 	     LPFC_FCP_SCHED_ROUND_ROBIN,
4818 	     LPFC_FCP_SCHED_BY_CPU,
4819 	     "Determine scheduling algorithm for "
4820 	     "issuing commands [0] - Round Robin, [1] - Current CPU");
4821 
4822 /*
4823 # lpfc_fcp2_no_tgt_reset: Determine bus reset behavior
4824 # range is [0,1]. Default value is 0.
4825 # For [0], bus reset issues target reset to ALL devices
4826 # For [1], bus reset issues target reset to non-FCP2 devices
4827 */
4828 LPFC_ATTR_RW(fcp2_no_tgt_reset, 0, 0, 1, "Determine bus reset behavior for "
4829 	     "FCP2 devices [0] - issue tgt reset, [1] - no tgt reset");
4830 
4831 
4832 /*
4833 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
4834 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take
4835 # value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
4836 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if
4837 # cr_delay is set to 0.
4838 */
4839 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
4840 		"interrupt response is generated");
4841 
4842 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
4843 		"interrupt response is generated");
4844 
4845 /*
4846 # lpfc_multi_ring_support:  Determines how many rings to spread available
4847 # cmd/rsp IOCB entries across.
4848 # Value range is [1,2]. Default value is 1.
4849 */
4850 LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
4851 		"SLI rings to spread IOCB entries across");
4852 
4853 /*
4854 # lpfc_multi_ring_rctl:  If lpfc_multi_ring_support is enabled, this
4855 # identifies what rctl value to configure the additional ring for.
4856 # Value range is [1,0xff]. Default value is 4 (Unsolicated Data).
4857 */
4858 LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1,
4859 	     255, "Identifies RCTL for additional ring configuration");
4860 
4861 /*
4862 # lpfc_multi_ring_type:  If lpfc_multi_ring_support is enabled, this
4863 # identifies what type value to configure the additional ring for.
4864 # Value range is [1,0xff]. Default value is 5 (LLC/SNAP).
4865 */
4866 LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1,
4867 	     255, "Identifies TYPE for additional ring configuration");
4868 
4869 /*
4870 # lpfc_enable_SmartSAN: Sets up FDMI support for SmartSAN
4871 #       0  = SmartSAN functionality disabled (default)
4872 #       1  = SmartSAN functionality enabled
4873 # This parameter will override the value of lpfc_fdmi_on module parameter.
4874 # Value range is [0,1]. Default value is 0.
4875 */
4876 LPFC_ATTR_R(enable_SmartSAN, 0, 0, 1, "Enable SmartSAN functionality");
4877 
4878 /*
4879 # lpfc_fdmi_on: Controls FDMI support.
4880 #       0       No FDMI support (default)
4881 #       1       Traditional FDMI support
4882 # Traditional FDMI support means the driver will assume FDMI-2 support;
4883 # however, if that fails, it will fallback to FDMI-1.
4884 # If lpfc_enable_SmartSAN is set to 1, the driver ignores lpfc_fdmi_on.
4885 # If lpfc_enable_SmartSAN is set 0, the driver uses the current value of
4886 # lpfc_fdmi_on.
4887 # Value range [0,1]. Default value is 0.
4888 */
4889 LPFC_ATTR_R(fdmi_on, 0, 0, 1, "Enable FDMI support");
4890 
4891 /*
4892 # Specifies the maximum number of ELS cmds we can have outstanding (for
4893 # discovery). Value range is [1,64]. Default value = 32.
4894 */
4895 LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
4896 		 "during discovery");
4897 
4898 /*
4899 # lpfc_max_luns: maximum allowed LUN ID. This is the highest LUN ID that
4900 #    will be scanned by the SCSI midlayer when sequential scanning is
4901 #    used; and is also the highest LUN ID allowed when the SCSI midlayer
4902 #    parses REPORT_LUN responses. The lpfc driver has no LUN count or
4903 #    LUN ID limit, but the SCSI midlayer requires this field for the uses
4904 #    above. The lpfc driver limits the default value to 255 for two reasons.
4905 #    As it bounds the sequential scan loop, scanning for thousands of luns
4906 #    on a target can take minutes of wall clock time.  Additionally,
4907 #    there are FC targets, such as JBODs, that only recognize 8-bits of
4908 #    LUN ID. When they receive a value greater than 8 bits, they chop off
4909 #    the high order bits. In other words, they see LUN IDs 0, 256, 512,
4910 #    and so on all as LUN ID 0. This causes the linux kernel, which sees
4911 #    valid responses at each of the LUN IDs, to believe there are multiple
4912 #    devices present, when in fact, there is only 1.
4913 #    A customer that is aware of their target behaviors, and the results as
4914 #    indicated above, is welcome to increase the lpfc_max_luns value.
4915 #    As mentioned, this value is not used by the lpfc driver, only the
4916 #    SCSI midlayer.
4917 # Value range is [0,65535]. Default value is 255.
4918 # NOTE: The SCSI layer might probe all allowed LUN on some old targets.
4919 */
4920 LPFC_VPORT_ULL_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN ID");
4921 
4922 /*
4923 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
4924 # Value range is [1,255], default value is 10.
4925 */
4926 LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
4927 	     "Milliseconds driver will wait between polling FCP ring");
4928 
4929 /*
4930 # lpfc_task_mgmt_tmo: Maximum time to wait for task management commands
4931 # to complete in seconds. Value range is [5,180], default value is 60.
4932 */
4933 LPFC_ATTR_RW(task_mgmt_tmo, 60, 5, 180,
4934 	     "Maximum time to wait for task management commands to complete");
4935 /*
4936 # lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
4937 #		support this feature
4938 #       0  = MSI disabled
4939 #       1  = MSI enabled
4940 #       2  = MSI-X enabled (default)
4941 # Value range is [0,2]. Default value is 2.
4942 */
4943 LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
4944 	    "MSI-X (2), if possible");
4945 
4946 /*
4947  * lpfc_nvme_oas: Use the oas bit when sending NVME/NVMET IOs
4948  *
4949  *      0  = NVME OAS disabled
4950  *      1  = NVME OAS enabled
4951  *
4952  * Value range is [0,1]. Default value is 0.
4953  */
4954 LPFC_ATTR_RW(nvme_oas, 0, 0, 1,
4955 	     "Use OAS bit on NVME IOs");
4956 
4957 /*
4958  * lpfc_fcp_io_channel: Set the number of FCP IO channels the driver
4959  * will advertise it supports to the SCSI layer. This also will map to
4960  * the number of WQs the driver will create.
4961  *
4962  *      0    = Configure the number of io channels to the number of active CPUs.
4963  *      1,32 = Manually specify how many io channels to use.
4964  *
4965  * Value range is [0,32]. Default value is 4.
4966  */
4967 LPFC_ATTR_R(fcp_io_channel,
4968 	    LPFC_FCP_IO_CHAN_DEF,
4969 	    LPFC_HBA_IO_CHAN_MIN, LPFC_HBA_IO_CHAN_MAX,
4970 	    "Set the number of FCP I/O channels");
4971 
4972 /*
4973  * lpfc_nvme_io_channel: Set the number of IO hardware queues the driver
4974  * will advertise it supports to the NVME layer. This also will map to
4975  * the number of WQs the driver will create.
4976  *
4977  * This module parameter is valid when lpfc_enable_fc4_type is set
4978  * to support NVME.
4979  *
4980  * The NVME Layer will try to create this many, plus 1 administrative
4981  * hardware queue. The administrative queue will always map to WQ 0
4982  * A hardware IO queue maps (qidx) to a specific driver WQ.
4983  *
4984  *      0    = Configure the number of io channels to the number of active CPUs.
4985  *      1,32 = Manually specify how many io channels to use.
4986  *
4987  * Value range is [0,32]. Default value is 0.
4988  */
4989 LPFC_ATTR_R(nvme_io_channel,
4990 	    LPFC_NVME_IO_CHAN_DEF,
4991 	    LPFC_HBA_IO_CHAN_MIN, LPFC_HBA_IO_CHAN_MAX,
4992 	    "Set the number of NVME I/O channels");
4993 
4994 /*
4995 # lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware.
4996 #       0  = HBA resets disabled
4997 #       1  = HBA resets enabled (default)
4998 # Value range is [0,1]. Default value is 1.
4999 */
5000 LPFC_ATTR_R(enable_hba_reset, 1, 0, 1, "Enable HBA resets from the driver.");
5001 
5002 /*
5003 # lpfc_enable_hba_heartbeat: Disable HBA heartbeat timer..
5004 #       0  = HBA Heartbeat disabled
5005 #       1  = HBA Heartbeat enabled (default)
5006 # Value range is [0,1]. Default value is 1.
5007 */
5008 LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat.");
5009 
5010 /*
5011 # lpfc_EnableXLane: Enable Express Lane Feature
5012 #      0x0   Express Lane Feature disabled
5013 #      0x1   Express Lane Feature enabled
5014 # Value range is [0,1]. Default value is 0.
5015 */
5016 LPFC_ATTR_R(EnableXLane, 0, 0, 1, "Enable Express Lane Feature.");
5017 
5018 /*
5019 # lpfc_XLanePriority:  Define CS_CTL priority for Express Lane Feature
5020 #       0x0 - 0x7f  = CS_CTL field in FC header (high 7 bits)
5021 # Value range is [0x0,0x7f]. Default value is 0
5022 */
5023 LPFC_ATTR_RW(XLanePriority, 0, 0x0, 0x7f, "CS_CTL for Express Lane Feature.");
5024 
5025 /*
5026 # lpfc_enable_bg: Enable BlockGuard (Emulex's Implementation of T10-DIF)
5027 #       0  = BlockGuard disabled (default)
5028 #       1  = BlockGuard enabled
5029 # Value range is [0,1]. Default value is 0.
5030 */
5031 LPFC_ATTR_R(enable_bg, 0, 0, 1, "Enable BlockGuard Support");
5032 
5033 /*
5034 # lpfc_fcp_look_ahead: Look ahead for completions in FCP start routine
5035 #       0  = disabled (default)
5036 #       1  = enabled
5037 # Value range is [0,1]. Default value is 0.
5038 #
5039 # This feature in under investigation and may be supported in the future.
5040 */
5041 unsigned int lpfc_fcp_look_ahead = LPFC_LOOK_AHEAD_OFF;
5042 
5043 /*
5044 # lpfc_prot_mask: i
5045 #	- Bit mask of host protection capabilities used to register with the
5046 #	  SCSI mid-layer
5047 # 	- Only meaningful if BG is turned on (lpfc_enable_bg=1).
5048 #	- Allows you to ultimately specify which profiles to use
5049 #	- Default will result in registering capabilities for all profiles.
5050 #	- SHOST_DIF_TYPE1_PROTECTION	1
5051 #		HBA supports T10 DIF Type 1: HBA to Target Type 1 Protection
5052 #	- SHOST_DIX_TYPE0_PROTECTION	8
5053 #		HBA supports DIX Type 0: Host to HBA protection only
5054 #	- SHOST_DIX_TYPE1_PROTECTION	16
5055 #		HBA supports DIX Type 1: Host to HBA  Type 1 protection
5056 #
5057 */
5058 LPFC_ATTR(prot_mask,
5059 	(SHOST_DIF_TYPE1_PROTECTION |
5060 	SHOST_DIX_TYPE0_PROTECTION |
5061 	SHOST_DIX_TYPE1_PROTECTION),
5062 	0,
5063 	(SHOST_DIF_TYPE1_PROTECTION |
5064 	SHOST_DIX_TYPE0_PROTECTION |
5065 	SHOST_DIX_TYPE1_PROTECTION),
5066 	"T10-DIF host protection capabilities mask");
5067 
5068 /*
5069 # lpfc_prot_guard: i
5070 #	- Bit mask of protection guard types to register with the SCSI mid-layer
5071 #	- Guard types are currently either 1) T10-DIF CRC 2) IP checksum
5072 #	- Allows you to ultimately specify which profiles to use
5073 #	- Default will result in registering capabilities for all guard types
5074 #
5075 */
5076 LPFC_ATTR(prot_guard,
5077 	SHOST_DIX_GUARD_IP, SHOST_DIX_GUARD_CRC, SHOST_DIX_GUARD_IP,
5078 	"T10-DIF host protection guard type");
5079 
5080 /*
5081  * Delay initial NPort discovery when Clean Address bit is cleared in
5082  * FLOGI/FDISC accept and FCID/Fabric name/Fabric portname is changed.
5083  * This parameter can have value 0 or 1.
5084  * When this parameter is set to 0, no delay is added to the initial
5085  * discovery.
5086  * When this parameter is set to non-zero value, initial Nport discovery is
5087  * delayed by ra_tov seconds when Clean Address bit is cleared in FLOGI/FDISC
5088  * accept and FCID/Fabric name/Fabric portname is changed.
5089  * Driver always delay Nport discovery for subsequent FLOGI/FDISC completion
5090  * when Clean Address bit is cleared in FLOGI/FDISC
5091  * accept and FCID/Fabric name/Fabric portname is changed.
5092  * Default value is 0.
5093  */
5094 LPFC_ATTR(delay_discovery, 0, 0, 1,
5095 	"Delay NPort discovery when Clean Address bit is cleared.");
5096 
5097 /*
5098  * lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count
5099  * This value can be set to values between 64 and 4096. The default value is
5100  * 64, but may be increased to allow for larger Max I/O sizes. The scsi layer
5101  * will be allowed to request I/Os of sizes up to (MAX_SEG_COUNT * SEG_SIZE).
5102  * Because of the additional overhead involved in setting up T10-DIF,
5103  * this parameter will be limited to 128 if BlockGuard is enabled under SLI4
5104  * and will be limited to 512 if BlockGuard is enabled under SLI3.
5105  */
5106 LPFC_ATTR_R(sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, LPFC_DEFAULT_SG_SEG_CNT,
5107 	    LPFC_MAX_SG_SEG_CNT, "Max Scatter Gather Segment Count");
5108 
5109 /*
5110  * lpfc_enable_mds_diags: Enable MDS Diagnostics
5111  *       0  = MDS Diagnostics disabled (default)
5112  *       1  = MDS Diagnostics enabled
5113  * Value range is [0,1]. Default value is 0.
5114  */
5115 LPFC_ATTR_R(enable_mds_diags, 0, 0, 1, "Enable MDS Diagnostics");
5116 
5117 struct device_attribute *lpfc_hba_attrs[] = {
5118 	&dev_attr_nvme_info,
5119 	&dev_attr_bg_info,
5120 	&dev_attr_bg_guard_err,
5121 	&dev_attr_bg_apptag_err,
5122 	&dev_attr_bg_reftag_err,
5123 	&dev_attr_info,
5124 	&dev_attr_serialnum,
5125 	&dev_attr_modeldesc,
5126 	&dev_attr_modelname,
5127 	&dev_attr_programtype,
5128 	&dev_attr_portnum,
5129 	&dev_attr_fwrev,
5130 	&dev_attr_hdw,
5131 	&dev_attr_option_rom_version,
5132 	&dev_attr_link_state,
5133 	&dev_attr_num_discovered_ports,
5134 	&dev_attr_menlo_mgmt_mode,
5135 	&dev_attr_lpfc_drvr_version,
5136 	&dev_attr_lpfc_enable_fip,
5137 	&dev_attr_lpfc_temp_sensor,
5138 	&dev_attr_lpfc_log_verbose,
5139 	&dev_attr_lpfc_lun_queue_depth,
5140 	&dev_attr_lpfc_tgt_queue_depth,
5141 	&dev_attr_lpfc_hba_queue_depth,
5142 	&dev_attr_lpfc_peer_port_login,
5143 	&dev_attr_lpfc_nodev_tmo,
5144 	&dev_attr_lpfc_devloss_tmo,
5145 	&dev_attr_lpfc_enable_fc4_type,
5146 	&dev_attr_lpfc_xri_split,
5147 	&dev_attr_lpfc_fcp_class,
5148 	&dev_attr_lpfc_use_adisc,
5149 	&dev_attr_lpfc_first_burst_size,
5150 	&dev_attr_lpfc_ack0,
5151 	&dev_attr_lpfc_topology,
5152 	&dev_attr_lpfc_scan_down,
5153 	&dev_attr_lpfc_link_speed,
5154 	&dev_attr_lpfc_fcp_io_sched,
5155 	&dev_attr_lpfc_fcp2_no_tgt_reset,
5156 	&dev_attr_lpfc_cr_delay,
5157 	&dev_attr_lpfc_cr_count,
5158 	&dev_attr_lpfc_multi_ring_support,
5159 	&dev_attr_lpfc_multi_ring_rctl,
5160 	&dev_attr_lpfc_multi_ring_type,
5161 	&dev_attr_lpfc_fdmi_on,
5162 	&dev_attr_lpfc_enable_SmartSAN,
5163 	&dev_attr_lpfc_max_luns,
5164 	&dev_attr_lpfc_enable_npiv,
5165 	&dev_attr_lpfc_fcf_failover_policy,
5166 	&dev_attr_lpfc_enable_rrq,
5167 	&dev_attr_nport_evt_cnt,
5168 	&dev_attr_board_mode,
5169 	&dev_attr_max_vpi,
5170 	&dev_attr_used_vpi,
5171 	&dev_attr_max_rpi,
5172 	&dev_attr_used_rpi,
5173 	&dev_attr_max_xri,
5174 	&dev_attr_used_xri,
5175 	&dev_attr_npiv_info,
5176 	&dev_attr_issue_reset,
5177 	&dev_attr_lpfc_poll,
5178 	&dev_attr_lpfc_poll_tmo,
5179 	&dev_attr_lpfc_task_mgmt_tmo,
5180 	&dev_attr_lpfc_use_msi,
5181 	&dev_attr_lpfc_nvme_oas,
5182 	&dev_attr_lpfc_auto_imax,
5183 	&dev_attr_lpfc_fcp_imax,
5184 	&dev_attr_lpfc_fcp_cpu_map,
5185 	&dev_attr_lpfc_fcp_io_channel,
5186 	&dev_attr_lpfc_suppress_rsp,
5187 	&dev_attr_lpfc_nvme_io_channel,
5188 	&dev_attr_lpfc_nvmet_mrq,
5189 	&dev_attr_lpfc_nvme_enable_fb,
5190 	&dev_attr_lpfc_nvmet_fb_size,
5191 	&dev_attr_lpfc_enable_bg,
5192 	&dev_attr_lpfc_soft_wwnn,
5193 	&dev_attr_lpfc_soft_wwpn,
5194 	&dev_attr_lpfc_soft_wwn_enable,
5195 	&dev_attr_lpfc_enable_hba_reset,
5196 	&dev_attr_lpfc_enable_hba_heartbeat,
5197 	&dev_attr_lpfc_EnableXLane,
5198 	&dev_attr_lpfc_XLanePriority,
5199 	&dev_attr_lpfc_xlane_lun,
5200 	&dev_attr_lpfc_xlane_tgt,
5201 	&dev_attr_lpfc_xlane_vpt,
5202 	&dev_attr_lpfc_xlane_lun_state,
5203 	&dev_attr_lpfc_xlane_lun_status,
5204 	&dev_attr_lpfc_xlane_priority,
5205 	&dev_attr_lpfc_sg_seg_cnt,
5206 	&dev_attr_lpfc_max_scsicmpl_time,
5207 	&dev_attr_lpfc_stat_data_ctrl,
5208 	&dev_attr_lpfc_aer_support,
5209 	&dev_attr_lpfc_aer_state_cleanup,
5210 	&dev_attr_lpfc_sriov_nr_virtfn,
5211 	&dev_attr_lpfc_req_fw_upgrade,
5212 	&dev_attr_lpfc_suppress_link_up,
5213 	&dev_attr_lpfc_iocb_cnt,
5214 	&dev_attr_iocb_hw,
5215 	&dev_attr_txq_hw,
5216 	&dev_attr_txcmplq_hw,
5217 	&dev_attr_lpfc_fips_level,
5218 	&dev_attr_lpfc_fips_rev,
5219 	&dev_attr_lpfc_dss,
5220 	&dev_attr_lpfc_sriov_hw_max_virtfn,
5221 	&dev_attr_protocol,
5222 	&dev_attr_lpfc_xlane_supported,
5223 	&dev_attr_lpfc_enable_mds_diags,
5224 	NULL,
5225 };
5226 
5227 struct device_attribute *lpfc_vport_attrs[] = {
5228 	&dev_attr_info,
5229 	&dev_attr_link_state,
5230 	&dev_attr_num_discovered_ports,
5231 	&dev_attr_lpfc_drvr_version,
5232 	&dev_attr_lpfc_log_verbose,
5233 	&dev_attr_lpfc_lun_queue_depth,
5234 	&dev_attr_lpfc_tgt_queue_depth,
5235 	&dev_attr_lpfc_nodev_tmo,
5236 	&dev_attr_lpfc_devloss_tmo,
5237 	&dev_attr_lpfc_hba_queue_depth,
5238 	&dev_attr_lpfc_peer_port_login,
5239 	&dev_attr_lpfc_restrict_login,
5240 	&dev_attr_lpfc_fcp_class,
5241 	&dev_attr_lpfc_use_adisc,
5242 	&dev_attr_lpfc_first_burst_size,
5243 	&dev_attr_lpfc_max_luns,
5244 	&dev_attr_nport_evt_cnt,
5245 	&dev_attr_npiv_info,
5246 	&dev_attr_lpfc_enable_da_id,
5247 	&dev_attr_lpfc_max_scsicmpl_time,
5248 	&dev_attr_lpfc_stat_data_ctrl,
5249 	&dev_attr_lpfc_static_vport,
5250 	&dev_attr_lpfc_fips_level,
5251 	&dev_attr_lpfc_fips_rev,
5252 	NULL,
5253 };
5254 
5255 /**
5256  * sysfs_ctlreg_write - Write method for writing to ctlreg
5257  * @filp: open sysfs file
5258  * @kobj: kernel kobject that contains the kernel class device.
5259  * @bin_attr: kernel attributes passed to us.
5260  * @buf: contains the data to be written to the adapter IOREG space.
5261  * @off: offset into buffer to beginning of data.
5262  * @count: bytes to transfer.
5263  *
5264  * Description:
5265  * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
5266  * Uses the adapter io control registers to send buf contents to the adapter.
5267  *
5268  * Returns:
5269  * -ERANGE off and count combo out of range
5270  * -EINVAL off, count or buff address invalid
5271  * -EPERM adapter is offline
5272  * value of count, buf contents written
5273  **/
5274 static ssize_t
5275 sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
5276 		   struct bin_attribute *bin_attr,
5277 		   char *buf, loff_t off, size_t count)
5278 {
5279 	size_t buf_off;
5280 	struct device *dev = container_of(kobj, struct device, kobj);
5281 	struct Scsi_Host  *shost = class_to_shost(dev);
5282 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5283 	struct lpfc_hba   *phba = vport->phba;
5284 
5285 	if (phba->sli_rev >= LPFC_SLI_REV4)
5286 		return -EPERM;
5287 
5288 	if ((off + count) > FF_REG_AREA_SIZE)
5289 		return -ERANGE;
5290 
5291 	if (count <= LPFC_REG_WRITE_KEY_SIZE)
5292 		return 0;
5293 
5294 	if (off % 4 || count % 4 || (unsigned long)buf % 4)
5295 		return -EINVAL;
5296 
5297 	/* This is to protect HBA registers from accidental writes. */
5298 	if (memcmp(buf, LPFC_REG_WRITE_KEY, LPFC_REG_WRITE_KEY_SIZE))
5299 		return -EINVAL;
5300 
5301 	if (!(vport->fc_flag & FC_OFFLINE_MODE))
5302 		return -EPERM;
5303 
5304 	spin_lock_irq(&phba->hbalock);
5305 	for (buf_off = 0; buf_off < count - LPFC_REG_WRITE_KEY_SIZE;
5306 			buf_off += sizeof(uint32_t))
5307 		writel(*((uint32_t *)(buf + buf_off + LPFC_REG_WRITE_KEY_SIZE)),
5308 		       phba->ctrl_regs_memmap_p + off + buf_off);
5309 
5310 	spin_unlock_irq(&phba->hbalock);
5311 
5312 	return count;
5313 }
5314 
5315 /**
5316  * sysfs_ctlreg_read - Read method for reading from ctlreg
5317  * @filp: open sysfs file
5318  * @kobj: kernel kobject that contains the kernel class device.
5319  * @bin_attr: kernel attributes passed to us.
5320  * @buf: if successful contains the data from the adapter IOREG space.
5321  * @off: offset into buffer to beginning of data.
5322  * @count: bytes to transfer.
5323  *
5324  * Description:
5325  * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
5326  * Uses the adapter io control registers to read data into buf.
5327  *
5328  * Returns:
5329  * -ERANGE off and count combo out of range
5330  * -EINVAL off, count or buff address invalid
5331  * value of count, buf contents read
5332  **/
5333 static ssize_t
5334 sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
5335 		  struct bin_attribute *bin_attr,
5336 		  char *buf, loff_t off, size_t count)
5337 {
5338 	size_t buf_off;
5339 	uint32_t * tmp_ptr;
5340 	struct device *dev = container_of(kobj, struct device, kobj);
5341 	struct Scsi_Host  *shost = class_to_shost(dev);
5342 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5343 	struct lpfc_hba   *phba = vport->phba;
5344 
5345 	if (phba->sli_rev >= LPFC_SLI_REV4)
5346 		return -EPERM;
5347 
5348 	if (off > FF_REG_AREA_SIZE)
5349 		return -ERANGE;
5350 
5351 	if ((off + count) > FF_REG_AREA_SIZE)
5352 		count = FF_REG_AREA_SIZE - off;
5353 
5354 	if (count == 0) return 0;
5355 
5356 	if (off % 4 || count % 4 || (unsigned long)buf % 4)
5357 		return -EINVAL;
5358 
5359 	spin_lock_irq(&phba->hbalock);
5360 
5361 	for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
5362 		tmp_ptr = (uint32_t *)(buf + buf_off);
5363 		*tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
5364 	}
5365 
5366 	spin_unlock_irq(&phba->hbalock);
5367 
5368 	return count;
5369 }
5370 
5371 static struct bin_attribute sysfs_ctlreg_attr = {
5372 	.attr = {
5373 		.name = "ctlreg",
5374 		.mode = S_IRUSR | S_IWUSR,
5375 	},
5376 	.size = 256,
5377 	.read = sysfs_ctlreg_read,
5378 	.write = sysfs_ctlreg_write,
5379 };
5380 
5381 /**
5382  * sysfs_mbox_write - Write method for writing information via mbox
5383  * @filp: open sysfs file
5384  * @kobj: kernel kobject that contains the kernel class device.
5385  * @bin_attr: kernel attributes passed to us.
5386  * @buf: contains the data to be written to sysfs mbox.
5387  * @off: offset into buffer to beginning of data.
5388  * @count: bytes to transfer.
5389  *
5390  * Description:
5391  * Deprecated function. All mailbox access from user space is performed via the
5392  * bsg interface.
5393  *
5394  * Returns:
5395  * -EPERM operation not permitted
5396  **/
5397 static ssize_t
5398 sysfs_mbox_write(struct file *filp, struct kobject *kobj,
5399 		 struct bin_attribute *bin_attr,
5400 		 char *buf, loff_t off, size_t count)
5401 {
5402 	return -EPERM;
5403 }
5404 
5405 /**
5406  * sysfs_mbox_read - Read method for reading information via mbox
5407  * @filp: open sysfs file
5408  * @kobj: kernel kobject that contains the kernel class device.
5409  * @bin_attr: kernel attributes passed to us.
5410  * @buf: contains the data to be read from sysfs mbox.
5411  * @off: offset into buffer to beginning of data.
5412  * @count: bytes to transfer.
5413  *
5414  * Description:
5415  * Deprecated function. All mailbox access from user space is performed via the
5416  * bsg interface.
5417  *
5418  * Returns:
5419  * -EPERM operation not permitted
5420  **/
5421 static ssize_t
5422 sysfs_mbox_read(struct file *filp, struct kobject *kobj,
5423 		struct bin_attribute *bin_attr,
5424 		char *buf, loff_t off, size_t count)
5425 {
5426 	return -EPERM;
5427 }
5428 
5429 static struct bin_attribute sysfs_mbox_attr = {
5430 	.attr = {
5431 		.name = "mbox",
5432 		.mode = S_IRUSR | S_IWUSR,
5433 	},
5434 	.size = MAILBOX_SYSFS_MAX,
5435 	.read = sysfs_mbox_read,
5436 	.write = sysfs_mbox_write,
5437 };
5438 
5439 /**
5440  * lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries
5441  * @vport: address of lpfc vport structure.
5442  *
5443  * Return codes:
5444  * zero on success
5445  * error return code from sysfs_create_bin_file()
5446  **/
5447 int
5448 lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
5449 {
5450 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5451 	int error;
5452 
5453 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5454 				      &sysfs_drvr_stat_data_attr);
5455 
5456 	/* Virtual ports do not need ctrl_reg and mbox */
5457 	if (error || vport->port_type == LPFC_NPIV_PORT)
5458 		goto out;
5459 
5460 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5461 				      &sysfs_ctlreg_attr);
5462 	if (error)
5463 		goto out_remove_stat_attr;
5464 
5465 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5466 				      &sysfs_mbox_attr);
5467 	if (error)
5468 		goto out_remove_ctlreg_attr;
5469 
5470 	return 0;
5471 out_remove_ctlreg_attr:
5472 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
5473 out_remove_stat_attr:
5474 	sysfs_remove_bin_file(&shost->shost_dev.kobj,
5475 			&sysfs_drvr_stat_data_attr);
5476 out:
5477 	return error;
5478 }
5479 
5480 /**
5481  * lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries
5482  * @vport: address of lpfc vport structure.
5483  **/
5484 void
5485 lpfc_free_sysfs_attr(struct lpfc_vport *vport)
5486 {
5487 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5488 	sysfs_remove_bin_file(&shost->shost_dev.kobj,
5489 		&sysfs_drvr_stat_data_attr);
5490 	/* Virtual ports do not need ctrl_reg and mbox */
5491 	if (vport->port_type == LPFC_NPIV_PORT)
5492 		return;
5493 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_mbox_attr);
5494 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
5495 }
5496 
5497 /*
5498  * Dynamic FC Host Attributes Support
5499  */
5500 
5501 /**
5502  * lpfc_get_host_symbolic_name - Copy symbolic name into the scsi host
5503  * @shost: kernel scsi host pointer.
5504  **/
5505 static void
5506 lpfc_get_host_symbolic_name(struct Scsi_Host *shost)
5507 {
5508 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5509 
5510 	lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
5511 				      sizeof fc_host_symbolic_name(shost));
5512 }
5513 
5514 /**
5515  * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id
5516  * @shost: kernel scsi host pointer.
5517  **/
5518 static void
5519 lpfc_get_host_port_id(struct Scsi_Host *shost)
5520 {
5521 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5522 
5523 	/* note: fc_myDID already in cpu endianness */
5524 	fc_host_port_id(shost) = vport->fc_myDID;
5525 }
5526 
5527 /**
5528  * lpfc_get_host_port_type - Set the value of the scsi host port type
5529  * @shost: kernel scsi host pointer.
5530  **/
5531 static void
5532 lpfc_get_host_port_type(struct Scsi_Host *shost)
5533 {
5534 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5535 	struct lpfc_hba   *phba = vport->phba;
5536 
5537 	spin_lock_irq(shost->host_lock);
5538 
5539 	if (vport->port_type == LPFC_NPIV_PORT) {
5540 		fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
5541 	} else if (lpfc_is_link_up(phba)) {
5542 		if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
5543 			if (vport->fc_flag & FC_PUBLIC_LOOP)
5544 				fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
5545 			else
5546 				fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
5547 		} else {
5548 			if (vport->fc_flag & FC_FABRIC)
5549 				fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
5550 			else
5551 				fc_host_port_type(shost) = FC_PORTTYPE_PTP;
5552 		}
5553 	} else
5554 		fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
5555 
5556 	spin_unlock_irq(shost->host_lock);
5557 }
5558 
5559 /**
5560  * lpfc_get_host_port_state - Set the value of the scsi host port state
5561  * @shost: kernel scsi host pointer.
5562  **/
5563 static void
5564 lpfc_get_host_port_state(struct Scsi_Host *shost)
5565 {
5566 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5567 	struct lpfc_hba   *phba = vport->phba;
5568 
5569 	spin_lock_irq(shost->host_lock);
5570 
5571 	if (vport->fc_flag & FC_OFFLINE_MODE)
5572 		fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
5573 	else {
5574 		switch (phba->link_state) {
5575 		case LPFC_LINK_UNKNOWN:
5576 		case LPFC_LINK_DOWN:
5577 			fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
5578 			break;
5579 		case LPFC_LINK_UP:
5580 		case LPFC_CLEAR_LA:
5581 		case LPFC_HBA_READY:
5582 			/* Links up, reports port state accordingly */
5583 			if (vport->port_state < LPFC_VPORT_READY)
5584 				fc_host_port_state(shost) =
5585 							FC_PORTSTATE_BYPASSED;
5586 			else
5587 				fc_host_port_state(shost) =
5588 							FC_PORTSTATE_ONLINE;
5589 			break;
5590 		case LPFC_HBA_ERROR:
5591 			fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
5592 			break;
5593 		default:
5594 			fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
5595 			break;
5596 		}
5597 	}
5598 
5599 	spin_unlock_irq(shost->host_lock);
5600 }
5601 
5602 /**
5603  * lpfc_get_host_speed - Set the value of the scsi host speed
5604  * @shost: kernel scsi host pointer.
5605  **/
5606 static void
5607 lpfc_get_host_speed(struct Scsi_Host *shost)
5608 {
5609 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5610 	struct lpfc_hba   *phba = vport->phba;
5611 
5612 	spin_lock_irq(shost->host_lock);
5613 
5614 	if ((lpfc_is_link_up(phba)) && (!(phba->hba_flag & HBA_FCOE_MODE))) {
5615 		switch(phba->fc_linkspeed) {
5616 		case LPFC_LINK_SPEED_1GHZ:
5617 			fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
5618 			break;
5619 		case LPFC_LINK_SPEED_2GHZ:
5620 			fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
5621 			break;
5622 		case LPFC_LINK_SPEED_4GHZ:
5623 			fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
5624 			break;
5625 		case LPFC_LINK_SPEED_8GHZ:
5626 			fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
5627 			break;
5628 		case LPFC_LINK_SPEED_10GHZ:
5629 			fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
5630 			break;
5631 		case LPFC_LINK_SPEED_16GHZ:
5632 			fc_host_speed(shost) = FC_PORTSPEED_16GBIT;
5633 			break;
5634 		case LPFC_LINK_SPEED_32GHZ:
5635 			fc_host_speed(shost) = FC_PORTSPEED_32GBIT;
5636 			break;
5637 		default:
5638 			fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
5639 			break;
5640 		}
5641 	} else
5642 		fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
5643 
5644 	spin_unlock_irq(shost->host_lock);
5645 }
5646 
5647 /**
5648  * lpfc_get_host_fabric_name - Set the value of the scsi host fabric name
5649  * @shost: kernel scsi host pointer.
5650  **/
5651 static void
5652 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
5653 {
5654 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5655 	struct lpfc_hba   *phba = vport->phba;
5656 	u64 node_name;
5657 
5658 	spin_lock_irq(shost->host_lock);
5659 
5660 	if ((vport->port_state > LPFC_FLOGI) &&
5661 	    ((vport->fc_flag & FC_FABRIC) ||
5662 	     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
5663 	      (vport->fc_flag & FC_PUBLIC_LOOP))))
5664 		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
5665 	else
5666 		/* fabric is local port if there is no F/FL_Port */
5667 		node_name = 0;
5668 
5669 	spin_unlock_irq(shost->host_lock);
5670 
5671 	fc_host_fabric_name(shost) = node_name;
5672 }
5673 
5674 /**
5675  * lpfc_get_stats - Return statistical information about the adapter
5676  * @shost: kernel scsi host pointer.
5677  *
5678  * Notes:
5679  * NULL on error for link down, no mbox pool, sli2 active,
5680  * management not allowed, memory allocation error, or mbox error.
5681  *
5682  * Returns:
5683  * NULL for error
5684  * address of the adapter host statistics
5685  **/
5686 static struct fc_host_statistics *
5687 lpfc_get_stats(struct Scsi_Host *shost)
5688 {
5689 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5690 	struct lpfc_hba   *phba = vport->phba;
5691 	struct lpfc_sli   *psli = &phba->sli;
5692 	struct fc_host_statistics *hs = &phba->link_stats;
5693 	struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
5694 	LPFC_MBOXQ_t *pmboxq;
5695 	MAILBOX_t *pmb;
5696 	unsigned long seconds;
5697 	int rc = 0;
5698 
5699 	/*
5700 	 * prevent udev from issuing mailbox commands until the port is
5701 	 * configured.
5702 	 */
5703 	if (phba->link_state < LPFC_LINK_DOWN ||
5704 	    !phba->mbox_mem_pool ||
5705 	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
5706 		return NULL;
5707 
5708 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
5709 		return NULL;
5710 
5711 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5712 	if (!pmboxq)
5713 		return NULL;
5714 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
5715 
5716 	pmb = &pmboxq->u.mb;
5717 	pmb->mbxCommand = MBX_READ_STATUS;
5718 	pmb->mbxOwner = OWN_HOST;
5719 	pmboxq->context1 = NULL;
5720 	pmboxq->vport = vport;
5721 
5722 	if (vport->fc_flag & FC_OFFLINE_MODE)
5723 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5724 	else
5725 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
5726 
5727 	if (rc != MBX_SUCCESS) {
5728 		if (rc != MBX_TIMEOUT)
5729 			mempool_free(pmboxq, phba->mbox_mem_pool);
5730 		return NULL;
5731 	}
5732 
5733 	memset(hs, 0, sizeof (struct fc_host_statistics));
5734 
5735 	hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
5736 	/*
5737 	 * The MBX_READ_STATUS returns tx_k_bytes which has to
5738 	 * converted to words
5739 	 */
5740 	hs->tx_words = (uint64_t)
5741 			((uint64_t)pmb->un.varRdStatus.xmitByteCnt
5742 			* (uint64_t)256);
5743 	hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
5744 	hs->rx_words = (uint64_t)
5745 			((uint64_t)pmb->un.varRdStatus.rcvByteCnt
5746 			 * (uint64_t)256);
5747 
5748 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
5749 	pmb->mbxCommand = MBX_READ_LNK_STAT;
5750 	pmb->mbxOwner = OWN_HOST;
5751 	pmboxq->context1 = NULL;
5752 	pmboxq->vport = vport;
5753 
5754 	if (vport->fc_flag & FC_OFFLINE_MODE)
5755 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5756 	else
5757 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
5758 
5759 	if (rc != MBX_SUCCESS) {
5760 		if (rc != MBX_TIMEOUT)
5761 			mempool_free(pmboxq, phba->mbox_mem_pool);
5762 		return NULL;
5763 	}
5764 
5765 	hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
5766 	hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
5767 	hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
5768 	hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
5769 	hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
5770 	hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
5771 	hs->error_frames = pmb->un.varRdLnk.crcCnt;
5772 
5773 	hs->link_failure_count -= lso->link_failure_count;
5774 	hs->loss_of_sync_count -= lso->loss_of_sync_count;
5775 	hs->loss_of_signal_count -= lso->loss_of_signal_count;
5776 	hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
5777 	hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
5778 	hs->invalid_crc_count -= lso->invalid_crc_count;
5779 	hs->error_frames -= lso->error_frames;
5780 
5781 	if (phba->hba_flag & HBA_FCOE_MODE) {
5782 		hs->lip_count = -1;
5783 		hs->nos_count = (phba->link_events >> 1);
5784 		hs->nos_count -= lso->link_events;
5785 	} else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
5786 		hs->lip_count = (phba->fc_eventTag >> 1);
5787 		hs->lip_count -= lso->link_events;
5788 		hs->nos_count = -1;
5789 	} else {
5790 		hs->lip_count = -1;
5791 		hs->nos_count = (phba->fc_eventTag >> 1);
5792 		hs->nos_count -= lso->link_events;
5793 	}
5794 
5795 	hs->dumped_frames = -1;
5796 
5797 	seconds = get_seconds();
5798 	if (seconds < psli->stats_start)
5799 		hs->seconds_since_last_reset = seconds +
5800 				((unsigned long)-1 - psli->stats_start);
5801 	else
5802 		hs->seconds_since_last_reset = seconds - psli->stats_start;
5803 
5804 	mempool_free(pmboxq, phba->mbox_mem_pool);
5805 
5806 	return hs;
5807 }
5808 
5809 /**
5810  * lpfc_reset_stats - Copy the adapter link stats information
5811  * @shost: kernel scsi host pointer.
5812  **/
5813 static void
5814 lpfc_reset_stats(struct Scsi_Host *shost)
5815 {
5816 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5817 	struct lpfc_hba   *phba = vport->phba;
5818 	struct lpfc_sli   *psli = &phba->sli;
5819 	struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets;
5820 	LPFC_MBOXQ_t *pmboxq;
5821 	MAILBOX_t *pmb;
5822 	int rc = 0;
5823 
5824 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
5825 		return;
5826 
5827 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5828 	if (!pmboxq)
5829 		return;
5830 	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
5831 
5832 	pmb = &pmboxq->u.mb;
5833 	pmb->mbxCommand = MBX_READ_STATUS;
5834 	pmb->mbxOwner = OWN_HOST;
5835 	pmb->un.varWords[0] = 0x1; /* reset request */
5836 	pmboxq->context1 = NULL;
5837 	pmboxq->vport = vport;
5838 
5839 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
5840 		(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
5841 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5842 	else
5843 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
5844 
5845 	if (rc != MBX_SUCCESS) {
5846 		if (rc != MBX_TIMEOUT)
5847 			mempool_free(pmboxq, phba->mbox_mem_pool);
5848 		return;
5849 	}
5850 
5851 	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
5852 	pmb->mbxCommand = MBX_READ_LNK_STAT;
5853 	pmb->mbxOwner = OWN_HOST;
5854 	pmboxq->context1 = NULL;
5855 	pmboxq->vport = vport;
5856 
5857 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
5858 	    (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
5859 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5860 	else
5861 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
5862 
5863 	if (rc != MBX_SUCCESS) {
5864 		if (rc != MBX_TIMEOUT)
5865 			mempool_free( pmboxq, phba->mbox_mem_pool);
5866 		return;
5867 	}
5868 
5869 	lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
5870 	lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
5871 	lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
5872 	lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
5873 	lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
5874 	lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
5875 	lso->error_frames = pmb->un.varRdLnk.crcCnt;
5876 	if (phba->hba_flag & HBA_FCOE_MODE)
5877 		lso->link_events = (phba->link_events >> 1);
5878 	else
5879 		lso->link_events = (phba->fc_eventTag >> 1);
5880 
5881 	psli->stats_start = get_seconds();
5882 
5883 	mempool_free(pmboxq, phba->mbox_mem_pool);
5884 
5885 	return;
5886 }
5887 
5888 /*
5889  * The LPFC driver treats linkdown handling as target loss events so there
5890  * are no sysfs handlers for link_down_tmo.
5891  */
5892 
5893 /**
5894  * lpfc_get_node_by_target - Return the nodelist for a target
5895  * @starget: kernel scsi target pointer.
5896  *
5897  * Returns:
5898  * address of the node list if found
5899  * NULL target not found
5900  **/
5901 static struct lpfc_nodelist *
5902 lpfc_get_node_by_target(struct scsi_target *starget)
5903 {
5904 	struct Scsi_Host  *shost = dev_to_shost(starget->dev.parent);
5905 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5906 	struct lpfc_nodelist *ndlp;
5907 
5908 	spin_lock_irq(shost->host_lock);
5909 	/* Search for this, mapped, target ID */
5910 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5911 		if (NLP_CHK_NODE_ACT(ndlp) &&
5912 		    ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
5913 		    starget->id == ndlp->nlp_sid) {
5914 			spin_unlock_irq(shost->host_lock);
5915 			return ndlp;
5916 		}
5917 	}
5918 	spin_unlock_irq(shost->host_lock);
5919 	return NULL;
5920 }
5921 
5922 /**
5923  * lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1
5924  * @starget: kernel scsi target pointer.
5925  **/
5926 static void
5927 lpfc_get_starget_port_id(struct scsi_target *starget)
5928 {
5929 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
5930 
5931 	fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1;
5932 }
5933 
5934 /**
5935  * lpfc_get_starget_node_name - Set the target node name
5936  * @starget: kernel scsi target pointer.
5937  *
5938  * Description: Set the target node name to the ndlp node name wwn or zero.
5939  **/
5940 static void
5941 lpfc_get_starget_node_name(struct scsi_target *starget)
5942 {
5943 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
5944 
5945 	fc_starget_node_name(starget) =
5946 		ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
5947 }
5948 
5949 /**
5950  * lpfc_get_starget_port_name - Set the target port name
5951  * @starget: kernel scsi target pointer.
5952  *
5953  * Description:  set the target port name to the ndlp port name wwn or zero.
5954  **/
5955 static void
5956 lpfc_get_starget_port_name(struct scsi_target *starget)
5957 {
5958 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
5959 
5960 	fc_starget_port_name(starget) =
5961 		ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
5962 }
5963 
5964 /**
5965  * lpfc_set_rport_loss_tmo - Set the rport dev loss tmo
5966  * @rport: fc rport address.
5967  * @timeout: new value for dev loss tmo.
5968  *
5969  * Description:
5970  * If timeout is non zero set the dev_loss_tmo to timeout, else set
5971  * dev_loss_tmo to one.
5972  **/
5973 static void
5974 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
5975 {
5976 	if (timeout)
5977 		rport->dev_loss_tmo = timeout;
5978 	else
5979 		rport->dev_loss_tmo = 1;
5980 }
5981 
5982 /**
5983  * lpfc_rport_show_function - Return rport target information
5984  *
5985  * Description:
5986  * Macro that uses field to generate a function with the name lpfc_show_rport_
5987  *
5988  * lpfc_show_rport_##field: returns the bytes formatted in buf
5989  * @cdev: class converted to an fc_rport.
5990  * @buf: on return contains the target_field or zero.
5991  *
5992  * Returns: size of formatted string.
5993  **/
5994 #define lpfc_rport_show_function(field, format_string, sz, cast)	\
5995 static ssize_t								\
5996 lpfc_show_rport_##field (struct device *dev,				\
5997 			 struct device_attribute *attr,			\
5998 			 char *buf)					\
5999 {									\
6000 	struct fc_rport *rport = transport_class_to_rport(dev);		\
6001 	struct lpfc_rport_data *rdata = rport->hostdata;		\
6002 	return snprintf(buf, sz, format_string,				\
6003 		(rdata->target) ? cast rdata->target->field : 0);	\
6004 }
6005 
6006 #define lpfc_rport_rd_attr(field, format_string, sz)			\
6007 	lpfc_rport_show_function(field, format_string, sz, )		\
6008 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)
6009 
6010 /**
6011  * lpfc_set_vport_symbolic_name - Set the vport's symbolic name
6012  * @fc_vport: The fc_vport who's symbolic name has been changed.
6013  *
6014  * Description:
6015  * This function is called by the transport after the @fc_vport's symbolic name
6016  * has been changed. This function re-registers the symbolic name with the
6017  * switch to propagate the change into the fabric if the vport is active.
6018  **/
6019 static void
6020 lpfc_set_vport_symbolic_name(struct fc_vport *fc_vport)
6021 {
6022 	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
6023 
6024 	if (vport->port_state == LPFC_VPORT_READY)
6025 		lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
6026 }
6027 
6028 /**
6029  * lpfc_hba_log_verbose_init - Set hba's log verbose level
6030  * @phba: Pointer to lpfc_hba struct.
6031  *
6032  * This function is called by the lpfc_get_cfgparam() routine to set the
6033  * module lpfc_log_verbose into the @phba cfg_log_verbose for use with
6034  * log message according to the module's lpfc_log_verbose parameter setting
6035  * before hba port or vport created.
6036  **/
6037 static void
6038 lpfc_hba_log_verbose_init(struct lpfc_hba *phba, uint32_t verbose)
6039 {
6040 	phba->cfg_log_verbose = verbose;
6041 }
6042 
6043 struct fc_function_template lpfc_transport_functions = {
6044 	/* fixed attributes the driver supports */
6045 	.show_host_node_name = 1,
6046 	.show_host_port_name = 1,
6047 	.show_host_supported_classes = 1,
6048 	.show_host_supported_fc4s = 1,
6049 	.show_host_supported_speeds = 1,
6050 	.show_host_maxframe_size = 1,
6051 
6052 	.get_host_symbolic_name = lpfc_get_host_symbolic_name,
6053 	.show_host_symbolic_name = 1,
6054 
6055 	/* dynamic attributes the driver supports */
6056 	.get_host_port_id = lpfc_get_host_port_id,
6057 	.show_host_port_id = 1,
6058 
6059 	.get_host_port_type = lpfc_get_host_port_type,
6060 	.show_host_port_type = 1,
6061 
6062 	.get_host_port_state = lpfc_get_host_port_state,
6063 	.show_host_port_state = 1,
6064 
6065 	/* active_fc4s is shown but doesn't change (thus no get function) */
6066 	.show_host_active_fc4s = 1,
6067 
6068 	.get_host_speed = lpfc_get_host_speed,
6069 	.show_host_speed = 1,
6070 
6071 	.get_host_fabric_name = lpfc_get_host_fabric_name,
6072 	.show_host_fabric_name = 1,
6073 
6074 	/*
6075 	 * The LPFC driver treats linkdown handling as target loss events
6076 	 * so there are no sysfs handlers for link_down_tmo.
6077 	 */
6078 
6079 	.get_fc_host_stats = lpfc_get_stats,
6080 	.reset_fc_host_stats = lpfc_reset_stats,
6081 
6082 	.dd_fcrport_size = sizeof(struct lpfc_rport_data),
6083 	.show_rport_maxframe_size = 1,
6084 	.show_rport_supported_classes = 1,
6085 
6086 	.set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
6087 	.show_rport_dev_loss_tmo = 1,
6088 
6089 	.get_starget_port_id  = lpfc_get_starget_port_id,
6090 	.show_starget_port_id = 1,
6091 
6092 	.get_starget_node_name = lpfc_get_starget_node_name,
6093 	.show_starget_node_name = 1,
6094 
6095 	.get_starget_port_name = lpfc_get_starget_port_name,
6096 	.show_starget_port_name = 1,
6097 
6098 	.issue_fc_host_lip = lpfc_issue_lip,
6099 	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
6100 	.terminate_rport_io = lpfc_terminate_rport_io,
6101 
6102 	.dd_fcvport_size = sizeof(struct lpfc_vport *),
6103 
6104 	.vport_disable = lpfc_vport_disable,
6105 
6106 	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
6107 
6108 	.bsg_request = lpfc_bsg_request,
6109 	.bsg_timeout = lpfc_bsg_timeout,
6110 };
6111 
6112 struct fc_function_template lpfc_vport_transport_functions = {
6113 	/* fixed attributes the driver supports */
6114 	.show_host_node_name = 1,
6115 	.show_host_port_name = 1,
6116 	.show_host_supported_classes = 1,
6117 	.show_host_supported_fc4s = 1,
6118 	.show_host_supported_speeds = 1,
6119 	.show_host_maxframe_size = 1,
6120 
6121 	.get_host_symbolic_name = lpfc_get_host_symbolic_name,
6122 	.show_host_symbolic_name = 1,
6123 
6124 	/* dynamic attributes the driver supports */
6125 	.get_host_port_id = lpfc_get_host_port_id,
6126 	.show_host_port_id = 1,
6127 
6128 	.get_host_port_type = lpfc_get_host_port_type,
6129 	.show_host_port_type = 1,
6130 
6131 	.get_host_port_state = lpfc_get_host_port_state,
6132 	.show_host_port_state = 1,
6133 
6134 	/* active_fc4s is shown but doesn't change (thus no get function) */
6135 	.show_host_active_fc4s = 1,
6136 
6137 	.get_host_speed = lpfc_get_host_speed,
6138 	.show_host_speed = 1,
6139 
6140 	.get_host_fabric_name = lpfc_get_host_fabric_name,
6141 	.show_host_fabric_name = 1,
6142 
6143 	/*
6144 	 * The LPFC driver treats linkdown handling as target loss events
6145 	 * so there are no sysfs handlers for link_down_tmo.
6146 	 */
6147 
6148 	.get_fc_host_stats = lpfc_get_stats,
6149 	.reset_fc_host_stats = lpfc_reset_stats,
6150 
6151 	.dd_fcrport_size = sizeof(struct lpfc_rport_data),
6152 	.show_rport_maxframe_size = 1,
6153 	.show_rport_supported_classes = 1,
6154 
6155 	.set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
6156 	.show_rport_dev_loss_tmo = 1,
6157 
6158 	.get_starget_port_id  = lpfc_get_starget_port_id,
6159 	.show_starget_port_id = 1,
6160 
6161 	.get_starget_node_name = lpfc_get_starget_node_name,
6162 	.show_starget_node_name = 1,
6163 
6164 	.get_starget_port_name = lpfc_get_starget_port_name,
6165 	.show_starget_port_name = 1,
6166 
6167 	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
6168 	.terminate_rport_io = lpfc_terminate_rport_io,
6169 
6170 	.vport_disable = lpfc_vport_disable,
6171 
6172 	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
6173 };
6174 
6175 /**
6176  * lpfc_get_cfgparam - Used during probe_one to init the adapter structure
6177  * @phba: lpfc_hba pointer.
6178  **/
6179 void
6180 lpfc_get_cfgparam(struct lpfc_hba *phba)
6181 {
6182 	lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched);
6183 	lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset);
6184 	lpfc_cr_delay_init(phba, lpfc_cr_delay);
6185 	lpfc_cr_count_init(phba, lpfc_cr_count);
6186 	lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
6187 	lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
6188 	lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
6189 	lpfc_ack0_init(phba, lpfc_ack0);
6190 	lpfc_topology_init(phba, lpfc_topology);
6191 	lpfc_link_speed_init(phba, lpfc_link_speed);
6192 	lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
6193 	lpfc_task_mgmt_tmo_init(phba, lpfc_task_mgmt_tmo);
6194 	lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
6195 	lpfc_fcf_failover_policy_init(phba, lpfc_fcf_failover_policy);
6196 	lpfc_enable_rrq_init(phba, lpfc_enable_rrq);
6197 	lpfc_fdmi_on_init(phba, lpfc_fdmi_on);
6198 	lpfc_enable_SmartSAN_init(phba, lpfc_enable_SmartSAN);
6199 	lpfc_use_msi_init(phba, lpfc_use_msi);
6200 	lpfc_nvme_oas_init(phba, lpfc_nvme_oas);
6201 	lpfc_auto_imax_init(phba, lpfc_auto_imax);
6202 	lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
6203 	lpfc_fcp_cpu_map_init(phba, lpfc_fcp_cpu_map);
6204 	lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
6205 	lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
6206 
6207 	lpfc_EnableXLane_init(phba, lpfc_EnableXLane);
6208 	if (phba->sli_rev != LPFC_SLI_REV4)
6209 		phba->cfg_EnableXLane = 0;
6210 	lpfc_XLanePriority_init(phba, lpfc_XLanePriority);
6211 
6212 	memset(phba->cfg_oas_tgt_wwpn, 0, (8 * sizeof(uint8_t)));
6213 	memset(phba->cfg_oas_vpt_wwpn, 0, (8 * sizeof(uint8_t)));
6214 	phba->cfg_oas_lun_state = 0;
6215 	phba->cfg_oas_lun_status = 0;
6216 	phba->cfg_oas_flags = 0;
6217 	phba->cfg_oas_priority = 0;
6218 	lpfc_enable_bg_init(phba, lpfc_enable_bg);
6219 	lpfc_prot_mask_init(phba, lpfc_prot_mask);
6220 	lpfc_prot_guard_init(phba, lpfc_prot_guard);
6221 	if (phba->sli_rev == LPFC_SLI_REV4)
6222 		phba->cfg_poll = 0;
6223 	else
6224 		phba->cfg_poll = lpfc_poll;
6225 	lpfc_suppress_rsp_init(phba, lpfc_suppress_rsp);
6226 
6227 	lpfc_enable_fc4_type_init(phba, lpfc_enable_fc4_type);
6228 	lpfc_nvmet_mrq_init(phba, lpfc_nvmet_mrq);
6229 
6230 	/* Initialize first burst. Target vs Initiator are different. */
6231 	lpfc_nvme_enable_fb_init(phba, lpfc_nvme_enable_fb);
6232 	lpfc_nvmet_fb_size_init(phba, lpfc_nvmet_fb_size);
6233 	lpfc_fcp_io_channel_init(phba, lpfc_fcp_io_channel);
6234 	lpfc_nvme_io_channel_init(phba, lpfc_nvme_io_channel);
6235 
6236 	if (phba->sli_rev != LPFC_SLI_REV4) {
6237 		/* NVME only supported on SLI4 */
6238 		phba->nvmet_support = 0;
6239 		phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
6240 	} else {
6241 		/* We MUST have FCP support */
6242 		if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
6243 			phba->cfg_enable_fc4_type |= LPFC_ENABLE_FCP;
6244 	}
6245 
6246 	if (phba->cfg_auto_imax && !phba->cfg_fcp_imax)
6247 		phba->cfg_auto_imax = 0;
6248 	phba->initial_imax = phba->cfg_fcp_imax;
6249 
6250 	/* A value of 0 means use the number of CPUs found in the system */
6251 	if (phba->cfg_fcp_io_channel == 0)
6252 		phba->cfg_fcp_io_channel = phba->sli4_hba.num_present_cpu;
6253 	if (phba->cfg_nvme_io_channel == 0)
6254 		phba->cfg_nvme_io_channel = phba->sli4_hba.num_present_cpu;
6255 
6256 	if (phba->cfg_enable_fc4_type == LPFC_ENABLE_NVME)
6257 		phba->cfg_fcp_io_channel = 0;
6258 
6259 	if (phba->cfg_enable_fc4_type == LPFC_ENABLE_FCP)
6260 		phba->cfg_nvme_io_channel = 0;
6261 
6262 	if (phba->cfg_fcp_io_channel > phba->cfg_nvme_io_channel)
6263 		phba->io_channel_irqs = phba->cfg_fcp_io_channel;
6264 	else
6265 		phba->io_channel_irqs = phba->cfg_nvme_io_channel;
6266 
6267 	phba->cfg_soft_wwnn = 0L;
6268 	phba->cfg_soft_wwpn = 0L;
6269 	lpfc_xri_split_init(phba, lpfc_xri_split);
6270 	lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
6271 	lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
6272 	lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);
6273 	lpfc_aer_support_init(phba, lpfc_aer_support);
6274 	lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn);
6275 	lpfc_request_firmware_upgrade_init(phba, lpfc_req_fw_upgrade);
6276 	lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
6277 	lpfc_iocb_cnt_init(phba, lpfc_iocb_cnt);
6278 	lpfc_delay_discovery_init(phba, lpfc_delay_discovery);
6279 	lpfc_sli_mode_init(phba, lpfc_sli_mode);
6280 	phba->cfg_enable_dss = 1;
6281 	lpfc_enable_mds_diags_init(phba, lpfc_enable_mds_diags);
6282 	return;
6283 }
6284 
6285 /**
6286  * lpfc_nvme_mod_param_dep - Adjust module parameter value based on
6287  * dependencies between protocols and roles.
6288  * @phba: lpfc_hba pointer.
6289  **/
6290 void
6291 lpfc_nvme_mod_param_dep(struct lpfc_hba *phba)
6292 {
6293 	if (phba->cfg_nvme_io_channel > phba->sli4_hba.num_present_cpu)
6294 		phba->cfg_nvme_io_channel = phba->sli4_hba.num_present_cpu;
6295 
6296 	if (phba->cfg_fcp_io_channel > phba->sli4_hba.num_present_cpu)
6297 		phba->cfg_fcp_io_channel = phba->sli4_hba.num_present_cpu;
6298 
6299 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
6300 	    phba->nvmet_support) {
6301 		phba->cfg_enable_fc4_type &= ~LPFC_ENABLE_FCP;
6302 		phba->cfg_fcp_io_channel = 0;
6303 
6304 		lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
6305 				"6013 %s x%x fb_size x%x, fb_max x%x\n",
6306 				"NVME Target PRLI ACC enable_fb ",
6307 				phba->cfg_nvme_enable_fb,
6308 				phba->cfg_nvmet_fb_size,
6309 				LPFC_NVMET_FB_SZ_MAX);
6310 
6311 		if (phba->cfg_nvme_enable_fb == 0)
6312 			phba->cfg_nvmet_fb_size = 0;
6313 		else {
6314 			if (phba->cfg_nvmet_fb_size > LPFC_NVMET_FB_SZ_MAX)
6315 				phba->cfg_nvmet_fb_size = LPFC_NVMET_FB_SZ_MAX;
6316 		}
6317 
6318 		/* Adjust lpfc_nvmet_mrq to avoid running out of WQE slots */
6319 		if (phba->cfg_nvmet_mrq > phba->cfg_nvme_io_channel) {
6320 			phba->cfg_nvmet_mrq = phba->cfg_nvme_io_channel;
6321 			lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
6322 					"6018 Adjust lpfc_nvmet_mrq to %d\n",
6323 					phba->cfg_nvmet_mrq);
6324 		}
6325 	} else {
6326 		/* Not NVME Target mode.  Turn off Target parameters. */
6327 		phba->nvmet_support = 0;
6328 		phba->cfg_nvmet_mrq = 0;
6329 		phba->cfg_nvmet_fb_size = 0;
6330 	}
6331 
6332 	if (phba->cfg_fcp_io_channel > phba->cfg_nvme_io_channel)
6333 		phba->io_channel_irqs = phba->cfg_fcp_io_channel;
6334 	else
6335 		phba->io_channel_irqs = phba->cfg_nvme_io_channel;
6336 }
6337 
6338 /**
6339  * lpfc_get_vport_cfgparam - Used during port create, init the vport structure
6340  * @vport: lpfc_vport pointer.
6341  **/
6342 void
6343 lpfc_get_vport_cfgparam(struct lpfc_vport *vport)
6344 {
6345 	lpfc_log_verbose_init(vport, lpfc_log_verbose);
6346 	lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth);
6347 	lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth);
6348 	lpfc_devloss_tmo_init(vport, lpfc_devloss_tmo);
6349 	lpfc_nodev_tmo_init(vport, lpfc_nodev_tmo);
6350 	lpfc_peer_port_login_init(vport, lpfc_peer_port_login);
6351 	lpfc_restrict_login_init(vport, lpfc_restrict_login);
6352 	lpfc_fcp_class_init(vport, lpfc_fcp_class);
6353 	lpfc_use_adisc_init(vport, lpfc_use_adisc);
6354 	lpfc_first_burst_size_init(vport, lpfc_first_burst_size);
6355 	lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time);
6356 	lpfc_discovery_threads_init(vport, lpfc_discovery_threads);
6357 	lpfc_max_luns_init(vport, lpfc_max_luns);
6358 	lpfc_scan_down_init(vport, lpfc_scan_down);
6359 	lpfc_enable_da_id_init(vport, lpfc_enable_da_id);
6360 	return;
6361 }
6362