xref: /openbmc/linux/drivers/scsi/lpfc/lpfc_attr.c (revision b34e08d5)
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2004-2013 Emulex.  All rights reserved.           *
5  * EMULEX and SLI are trademarks of Emulex.                        *
6  * www.emulex.com                                                  *
7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
8  *                                                                 *
9  * This program is free software; you can redistribute it and/or   *
10  * modify it under the terms of version 2 of the GNU General       *
11  * Public License as published by the Free Software Foundation.    *
12  * This program is distributed in the hope that it will be useful. *
13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
18  * more details, a copy of which can be found in the file COPYING  *
19  * included with this package.                                     *
20  *******************************************************************/
21 
22 #include <linux/ctype.h>
23 #include <linux/delay.h>
24 #include <linux/pci.h>
25 #include <linux/interrupt.h>
26 #include <linux/module.h>
27 #include <linux/aer.h>
28 #include <linux/gfp.h>
29 #include <linux/kernel.h>
30 
31 #include <scsi/scsi.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_tcq.h>
35 #include <scsi/scsi_transport_fc.h>
36 #include <scsi/fc/fc_fs.h>
37 
38 #include "lpfc_hw4.h"
39 #include "lpfc_hw.h"
40 #include "lpfc_sli.h"
41 #include "lpfc_sli4.h"
42 #include "lpfc_nl.h"
43 #include "lpfc_disc.h"
44 #include "lpfc_scsi.h"
45 #include "lpfc.h"
46 #include "lpfc_logmsg.h"
47 #include "lpfc_version.h"
48 #include "lpfc_compat.h"
49 #include "lpfc_crtn.h"
50 #include "lpfc_vport.h"
51 
52 #define LPFC_DEF_DEVLOSS_TMO 30
53 #define LPFC_MIN_DEVLOSS_TMO 1
54 #define LPFC_MAX_DEVLOSS_TMO 255
55 
56 /*
57  * Write key size should be multiple of 4. If write key is changed
58  * make sure that library write key is also changed.
59  */
60 #define LPFC_REG_WRITE_KEY_SIZE	4
61 #define LPFC_REG_WRITE_KEY	"EMLX"
62 
63 /**
64  * lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules
65  * @incr: integer to convert.
66  * @hdw: ascii string holding converted integer plus a string terminator.
67  *
68  * Description:
69  * JEDEC Joint Electron Device Engineering Council.
70  * Convert a 32 bit integer composed of 8 nibbles into an 8 byte ascii
71  * character string. The string is then terminated with a NULL in byte 9.
72  * Hex 0-9 becomes ascii '0' to '9'.
73  * Hex a-f becomes ascii '=' to 'B' capital B.
74  *
75  * Notes:
76  * Coded for 32 bit integers only.
77  **/
78 static void
79 lpfc_jedec_to_ascii(int incr, char hdw[])
80 {
81 	int i, j;
82 	for (i = 0; i < 8; i++) {
83 		j = (incr & 0xf);
84 		if (j <= 9)
85 			hdw[7 - i] = 0x30 +  j;
86 		 else
87 			hdw[7 - i] = 0x61 + j - 10;
88 		incr = (incr >> 4);
89 	}
90 	hdw[8] = 0;
91 	return;
92 }
93 
94 /**
95  * lpfc_drvr_version_show - Return the Emulex driver string with version number
96  * @dev: class unused variable.
97  * @attr: device attribute, not used.
98  * @buf: on return contains the module description text.
99  *
100  * Returns: size of formatted string.
101  **/
102 static ssize_t
103 lpfc_drvr_version_show(struct device *dev, struct device_attribute *attr,
104 		       char *buf)
105 {
106 	return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
107 }
108 
109 /**
110  * lpfc_enable_fip_show - Return the fip mode of the HBA
111  * @dev: class unused variable.
112  * @attr: device attribute, not used.
113  * @buf: on return contains the module description text.
114  *
115  * Returns: size of formatted string.
116  **/
117 static ssize_t
118 lpfc_enable_fip_show(struct device *dev, struct device_attribute *attr,
119 		       char *buf)
120 {
121 	struct Scsi_Host *shost = class_to_shost(dev);
122 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
123 	struct lpfc_hba   *phba = vport->phba;
124 
125 	if (phba->hba_flag & HBA_FIP_SUPPORT)
126 		return snprintf(buf, PAGE_SIZE, "1\n");
127 	else
128 		return snprintf(buf, PAGE_SIZE, "0\n");
129 }
130 
131 static ssize_t
132 lpfc_bg_info_show(struct device *dev, struct device_attribute *attr,
133 		  char *buf)
134 {
135 	struct Scsi_Host *shost = class_to_shost(dev);
136 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
137 	struct lpfc_hba   *phba = vport->phba;
138 
139 	if (phba->cfg_enable_bg)
140 		if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
141 			return snprintf(buf, PAGE_SIZE, "BlockGuard Enabled\n");
142 		else
143 			return snprintf(buf, PAGE_SIZE,
144 					"BlockGuard Not Supported\n");
145 	else
146 			return snprintf(buf, PAGE_SIZE,
147 					"BlockGuard Disabled\n");
148 }
149 
150 static ssize_t
151 lpfc_bg_guard_err_show(struct device *dev, struct device_attribute *attr,
152 		       char *buf)
153 {
154 	struct Scsi_Host *shost = class_to_shost(dev);
155 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
156 	struct lpfc_hba   *phba = vport->phba;
157 
158 	return snprintf(buf, PAGE_SIZE, "%llu\n",
159 			(unsigned long long)phba->bg_guard_err_cnt);
160 }
161 
162 static ssize_t
163 lpfc_bg_apptag_err_show(struct device *dev, struct device_attribute *attr,
164 			char *buf)
165 {
166 	struct Scsi_Host *shost = class_to_shost(dev);
167 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
168 	struct lpfc_hba   *phba = vport->phba;
169 
170 	return snprintf(buf, PAGE_SIZE, "%llu\n",
171 			(unsigned long long)phba->bg_apptag_err_cnt);
172 }
173 
174 static ssize_t
175 lpfc_bg_reftag_err_show(struct device *dev, struct device_attribute *attr,
176 			char *buf)
177 {
178 	struct Scsi_Host *shost = class_to_shost(dev);
179 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
180 	struct lpfc_hba   *phba = vport->phba;
181 
182 	return snprintf(buf, PAGE_SIZE, "%llu\n",
183 			(unsigned long long)phba->bg_reftag_err_cnt);
184 }
185 
186 /**
187  * lpfc_info_show - Return some pci info about the host in ascii
188  * @dev: class converted to a Scsi_host structure.
189  * @attr: device attribute, not used.
190  * @buf: on return contains the formatted text from lpfc_info().
191  *
192  * Returns: size of formatted string.
193  **/
194 static ssize_t
195 lpfc_info_show(struct device *dev, struct device_attribute *attr,
196 	       char *buf)
197 {
198 	struct Scsi_Host *host = class_to_shost(dev);
199 
200 	return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
201 }
202 
203 /**
204  * lpfc_serialnum_show - Return the hba serial number in ascii
205  * @dev: class converted to a Scsi_host structure.
206  * @attr: device attribute, not used.
207  * @buf: on return contains the formatted text serial number.
208  *
209  * Returns: size of formatted string.
210  **/
211 static ssize_t
212 lpfc_serialnum_show(struct device *dev, struct device_attribute *attr,
213 		    char *buf)
214 {
215 	struct Scsi_Host  *shost = class_to_shost(dev);
216 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
217 	struct lpfc_hba   *phba = vport->phba;
218 
219 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
220 }
221 
222 /**
223  * lpfc_temp_sensor_show - Return the temperature sensor level
224  * @dev: class converted to a Scsi_host structure.
225  * @attr: device attribute, not used.
226  * @buf: on return contains the formatted support level.
227  *
228  * Description:
229  * Returns a number indicating the temperature sensor level currently
230  * supported, zero or one in ascii.
231  *
232  * Returns: size of formatted string.
233  **/
234 static ssize_t
235 lpfc_temp_sensor_show(struct device *dev, struct device_attribute *attr,
236 		      char *buf)
237 {
238 	struct Scsi_Host *shost = class_to_shost(dev);
239 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
240 	struct lpfc_hba   *phba = vport->phba;
241 	return snprintf(buf, PAGE_SIZE, "%d\n",phba->temp_sensor_support);
242 }
243 
244 /**
245  * lpfc_modeldesc_show - Return the model description of the hba
246  * @dev: class converted to a Scsi_host structure.
247  * @attr: device attribute, not used.
248  * @buf: on return contains the scsi vpd model description.
249  *
250  * Returns: size of formatted string.
251  **/
252 static ssize_t
253 lpfc_modeldesc_show(struct device *dev, struct device_attribute *attr,
254 		    char *buf)
255 {
256 	struct Scsi_Host  *shost = class_to_shost(dev);
257 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
258 	struct lpfc_hba   *phba = vport->phba;
259 
260 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
261 }
262 
263 /**
264  * lpfc_modelname_show - Return the model name of the hba
265  * @dev: class converted to a Scsi_host structure.
266  * @attr: device attribute, not used.
267  * @buf: on return contains the scsi vpd model name.
268  *
269  * Returns: size of formatted string.
270  **/
271 static ssize_t
272 lpfc_modelname_show(struct device *dev, struct device_attribute *attr,
273 		    char *buf)
274 {
275 	struct Scsi_Host  *shost = class_to_shost(dev);
276 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
277 	struct lpfc_hba   *phba = vport->phba;
278 
279 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
280 }
281 
282 /**
283  * lpfc_programtype_show - Return the program type of the hba
284  * @dev: class converted to a Scsi_host structure.
285  * @attr: device attribute, not used.
286  * @buf: on return contains the scsi vpd program type.
287  *
288  * Returns: size of formatted string.
289  **/
290 static ssize_t
291 lpfc_programtype_show(struct device *dev, struct device_attribute *attr,
292 		      char *buf)
293 {
294 	struct Scsi_Host  *shost = class_to_shost(dev);
295 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
296 	struct lpfc_hba   *phba = vport->phba;
297 
298 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
299 }
300 
301 /**
302  * lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag
303  * @dev: class converted to a Scsi_host structure.
304  * @attr: device attribute, not used.
305  * @buf: on return contains the Menlo Maintenance sli flag.
306  *
307  * Returns: size of formatted string.
308  **/
309 static ssize_t
310 lpfc_mlomgmt_show(struct device *dev, struct device_attribute *attr, char *buf)
311 {
312 	struct Scsi_Host  *shost = class_to_shost(dev);
313 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
314 	struct lpfc_hba   *phba = vport->phba;
315 
316 	return snprintf(buf, PAGE_SIZE, "%d\n",
317 		(phba->sli.sli_flag & LPFC_MENLO_MAINT));
318 }
319 
320 /**
321  * lpfc_vportnum_show - Return the port number in ascii of the hba
322  * @dev: class converted to a Scsi_host structure.
323  * @attr: device attribute, not used.
324  * @buf: on return contains scsi vpd program type.
325  *
326  * Returns: size of formatted string.
327  **/
328 static ssize_t
329 lpfc_vportnum_show(struct device *dev, struct device_attribute *attr,
330 		   char *buf)
331 {
332 	struct Scsi_Host  *shost = class_to_shost(dev);
333 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
334 	struct lpfc_hba   *phba = vport->phba;
335 
336 	return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
337 }
338 
339 /**
340  * lpfc_fwrev_show - Return the firmware rev running in the hba
341  * @dev: class converted to a Scsi_host structure.
342  * @attr: device attribute, not used.
343  * @buf: on return contains the scsi vpd program type.
344  *
345  * Returns: size of formatted string.
346  **/
347 static ssize_t
348 lpfc_fwrev_show(struct device *dev, struct device_attribute *attr,
349 		char *buf)
350 {
351 	struct Scsi_Host  *shost = class_to_shost(dev);
352 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
353 	struct lpfc_hba   *phba = vport->phba;
354 	uint32_t if_type;
355 	uint8_t sli_family;
356 	char fwrev[FW_REV_STR_SIZE];
357 	int len;
358 
359 	lpfc_decode_firmware_rev(phba, fwrev, 1);
360 	if_type = phba->sli4_hba.pc_sli4_params.if_type;
361 	sli_family = phba->sli4_hba.pc_sli4_params.sli_family;
362 
363 	if (phba->sli_rev < LPFC_SLI_REV4)
364 		len = snprintf(buf, PAGE_SIZE, "%s, sli-%d\n",
365 			       fwrev, phba->sli_rev);
366 	else
367 		len = snprintf(buf, PAGE_SIZE, "%s, sli-%d:%d:%x\n",
368 			       fwrev, phba->sli_rev, if_type, sli_family);
369 
370 	return len;
371 }
372 
373 /**
374  * lpfc_hdw_show - Return the jedec information about the hba
375  * @dev: class converted to a Scsi_host structure.
376  * @attr: device attribute, not used.
377  * @buf: on return contains the scsi vpd program type.
378  *
379  * Returns: size of formatted string.
380  **/
381 static ssize_t
382 lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf)
383 {
384 	char hdw[9];
385 	struct Scsi_Host  *shost = class_to_shost(dev);
386 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
387 	struct lpfc_hba   *phba = vport->phba;
388 	lpfc_vpd_t *vp = &phba->vpd;
389 
390 	lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
391 	return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
392 }
393 
394 /**
395  * lpfc_option_rom_version_show - Return the adapter ROM FCode version
396  * @dev: class converted to a Scsi_host structure.
397  * @attr: device attribute, not used.
398  * @buf: on return contains the ROM and FCode ascii strings.
399  *
400  * Returns: size of formatted string.
401  **/
402 static ssize_t
403 lpfc_option_rom_version_show(struct device *dev, struct device_attribute *attr,
404 			     char *buf)
405 {
406 	struct Scsi_Host  *shost = class_to_shost(dev);
407 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
408 	struct lpfc_hba   *phba = vport->phba;
409 
410 	return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
411 }
412 
413 /**
414  * lpfc_state_show - Return the link state of the port
415  * @dev: class converted to a Scsi_host structure.
416  * @attr: device attribute, not used.
417  * @buf: on return contains text describing the state of the link.
418  *
419  * Notes:
420  * The switch statement has no default so zero will be returned.
421  *
422  * Returns: size of formatted string.
423  **/
424 static ssize_t
425 lpfc_link_state_show(struct device *dev, struct device_attribute *attr,
426 		     char *buf)
427 {
428 	struct Scsi_Host  *shost = class_to_shost(dev);
429 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
430 	struct lpfc_hba   *phba = vport->phba;
431 	int  len = 0;
432 
433 	switch (phba->link_state) {
434 	case LPFC_LINK_UNKNOWN:
435 	case LPFC_WARM_START:
436 	case LPFC_INIT_START:
437 	case LPFC_INIT_MBX_CMDS:
438 	case LPFC_LINK_DOWN:
439 	case LPFC_HBA_ERROR:
440 		if (phba->hba_flag & LINK_DISABLED)
441 			len += snprintf(buf + len, PAGE_SIZE-len,
442 				"Link Down - User disabled\n");
443 		else
444 			len += snprintf(buf + len, PAGE_SIZE-len,
445 				"Link Down\n");
446 		break;
447 	case LPFC_LINK_UP:
448 	case LPFC_CLEAR_LA:
449 	case LPFC_HBA_READY:
450 		len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - ");
451 
452 		switch (vport->port_state) {
453 		case LPFC_LOCAL_CFG_LINK:
454 			len += snprintf(buf + len, PAGE_SIZE-len,
455 					"Configuring Link\n");
456 			break;
457 		case LPFC_FDISC:
458 		case LPFC_FLOGI:
459 		case LPFC_FABRIC_CFG_LINK:
460 		case LPFC_NS_REG:
461 		case LPFC_NS_QRY:
462 		case LPFC_BUILD_DISC_LIST:
463 		case LPFC_DISC_AUTH:
464 			len += snprintf(buf + len, PAGE_SIZE - len,
465 					"Discovery\n");
466 			break;
467 		case LPFC_VPORT_READY:
468 			len += snprintf(buf + len, PAGE_SIZE - len, "Ready\n");
469 			break;
470 
471 		case LPFC_VPORT_FAILED:
472 			len += snprintf(buf + len, PAGE_SIZE - len, "Failed\n");
473 			break;
474 
475 		case LPFC_VPORT_UNKNOWN:
476 			len += snprintf(buf + len, PAGE_SIZE - len,
477 					"Unknown\n");
478 			break;
479 		}
480 		if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
481 			len += snprintf(buf + len, PAGE_SIZE-len,
482 					"   Menlo Maint Mode\n");
483 		else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
484 			if (vport->fc_flag & FC_PUBLIC_LOOP)
485 				len += snprintf(buf + len, PAGE_SIZE-len,
486 						"   Public Loop\n");
487 			else
488 				len += snprintf(buf + len, PAGE_SIZE-len,
489 						"   Private Loop\n");
490 		} else {
491 			if (vport->fc_flag & FC_FABRIC)
492 				len += snprintf(buf + len, PAGE_SIZE-len,
493 						"   Fabric\n");
494 			else
495 				len += snprintf(buf + len, PAGE_SIZE-len,
496 						"   Point-2-Point\n");
497 		}
498 	}
499 
500 	return len;
501 }
502 
503 /**
504  * lpfc_sli4_protocol_show - Return the fip mode of the HBA
505  * @dev: class unused variable.
506  * @attr: device attribute, not used.
507  * @buf: on return contains the module description text.
508  *
509  * Returns: size of formatted string.
510  **/
511 static ssize_t
512 lpfc_sli4_protocol_show(struct device *dev, struct device_attribute *attr,
513 			char *buf)
514 {
515 	struct Scsi_Host *shost = class_to_shost(dev);
516 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
517 	struct lpfc_hba *phba = vport->phba;
518 
519 	if (phba->sli_rev < LPFC_SLI_REV4)
520 		return snprintf(buf, PAGE_SIZE, "fc\n");
521 
522 	if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL) {
523 		if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_GE)
524 			return snprintf(buf, PAGE_SIZE, "fcoe\n");
525 		if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)
526 			return snprintf(buf, PAGE_SIZE, "fc\n");
527 	}
528 	return snprintf(buf, PAGE_SIZE, "unknown\n");
529 }
530 
531 /**
532  * lpfc_oas_supported_show - Return whether or not Optimized Access Storage
533  *			    (OAS) is supported.
534  * @dev: class unused variable.
535  * @attr: device attribute, not used.
536  * @buf: on return contains the module description text.
537  *
538  * Returns: size of formatted string.
539  **/
540 static ssize_t
541 lpfc_oas_supported_show(struct device *dev, struct device_attribute *attr,
542 			char *buf)
543 {
544 	struct Scsi_Host *shost = class_to_shost(dev);
545 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
546 	struct lpfc_hba *phba = vport->phba;
547 
548 	return snprintf(buf, PAGE_SIZE, "%d\n",
549 			phba->sli4_hba.pc_sli4_params.oas_supported);
550 }
551 
552 /**
553  * lpfc_link_state_store - Transition the link_state on an HBA port
554  * @dev: class device that is converted into a Scsi_host.
555  * @attr: device attribute, not used.
556  * @buf: one or more lpfc_polling_flags values.
557  * @count: not used.
558  *
559  * Returns:
560  * -EINVAL if the buffer is not "up" or "down"
561  * return from link state change function if non-zero
562  * length of the buf on success
563  **/
564 static ssize_t
565 lpfc_link_state_store(struct device *dev, struct device_attribute *attr,
566 		const char *buf, size_t count)
567 {
568 	struct Scsi_Host  *shost = class_to_shost(dev);
569 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
570 	struct lpfc_hba   *phba = vport->phba;
571 
572 	int status = -EINVAL;
573 
574 	if ((strncmp(buf, "up", sizeof("up") - 1) == 0) &&
575 			(phba->link_state == LPFC_LINK_DOWN))
576 		status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
577 	else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) &&
578 			(phba->link_state >= LPFC_LINK_UP))
579 		status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT);
580 
581 	if (status == 0)
582 		return strlen(buf);
583 	else
584 		return status;
585 }
586 
587 /**
588  * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports
589  * @dev: class device that is converted into a Scsi_host.
590  * @attr: device attribute, not used.
591  * @buf: on return contains the sum of fc mapped and unmapped.
592  *
593  * Description:
594  * Returns the ascii text number of the sum of the fc mapped and unmapped
595  * vport counts.
596  *
597  * Returns: size of formatted string.
598  **/
599 static ssize_t
600 lpfc_num_discovered_ports_show(struct device *dev,
601 			       struct device_attribute *attr, char *buf)
602 {
603 	struct Scsi_Host  *shost = class_to_shost(dev);
604 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
605 
606 	return snprintf(buf, PAGE_SIZE, "%d\n",
607 			vport->fc_map_cnt + vport->fc_unmap_cnt);
608 }
609 
610 /**
611  * lpfc_issue_lip - Misnomer, name carried over from long ago
612  * @shost: Scsi_Host pointer.
613  *
614  * Description:
615  * Bring the link down gracefully then re-init the link. The firmware will
616  * re-init the fiber channel interface as required. Does not issue a LIP.
617  *
618  * Returns:
619  * -EPERM port offline or management commands are being blocked
620  * -ENOMEM cannot allocate memory for the mailbox command
621  * -EIO error sending the mailbox command
622  * zero for success
623  **/
624 static int
625 lpfc_issue_lip(struct Scsi_Host *shost)
626 {
627 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
628 	struct lpfc_hba   *phba = vport->phba;
629 	LPFC_MBOXQ_t *pmboxq;
630 	int mbxstatus = MBXERR_ERROR;
631 
632 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
633 	    (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
634 		return -EPERM;
635 
636 	pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
637 
638 	if (!pmboxq)
639 		return -ENOMEM;
640 
641 	memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
642 	pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
643 	pmboxq->u.mb.mbxOwner = OWN_HOST;
644 
645 	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
646 
647 	if ((mbxstatus == MBX_SUCCESS) &&
648 	    (pmboxq->u.mb.mbxStatus == 0 ||
649 	     pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
650 		memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
651 		lpfc_init_link(phba, pmboxq, phba->cfg_topology,
652 			       phba->cfg_link_speed);
653 		mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
654 						     phba->fc_ratov * 2);
655 		if ((mbxstatus == MBX_SUCCESS) &&
656 		    (pmboxq->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
657 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
658 					"2859 SLI authentication is required "
659 					"for INIT_LINK but has not done yet\n");
660 	}
661 
662 	lpfc_set_loopback_flag(phba);
663 	if (mbxstatus != MBX_TIMEOUT)
664 		mempool_free(pmboxq, phba->mbox_mem_pool);
665 
666 	if (mbxstatus == MBXERR_ERROR)
667 		return -EIO;
668 
669 	return 0;
670 }
671 
672 /**
673  * lpfc_do_offline - Issues a mailbox command to bring the link down
674  * @phba: lpfc_hba pointer.
675  * @type: LPFC_EVT_OFFLINE, LPFC_EVT_WARM_START, LPFC_EVT_KILL.
676  *
677  * Notes:
678  * Assumes any error from lpfc_do_offline() will be negative.
679  * Can wait up to 5 seconds for the port ring buffers count
680  * to reach zero, prints a warning if it is not zero and continues.
681  * lpfc_workq_post_event() returns a non-zero return code if call fails.
682  *
683  * Returns:
684  * -EIO error posting the event
685  * zero for success
686  **/
687 static int
688 lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
689 {
690 	struct completion online_compl;
691 	struct lpfc_sli_ring *pring;
692 	struct lpfc_sli *psli;
693 	int status = 0;
694 	int cnt = 0;
695 	int i;
696 	int rc;
697 
698 	init_completion(&online_compl);
699 	rc = lpfc_workq_post_event(phba, &status, &online_compl,
700 			      LPFC_EVT_OFFLINE_PREP);
701 	if (rc == 0)
702 		return -ENOMEM;
703 
704 	wait_for_completion(&online_compl);
705 
706 	if (status != 0)
707 		return -EIO;
708 
709 	psli = &phba->sli;
710 
711 	/* Wait a little for things to settle down, but not
712 	 * long enough for dev loss timeout to expire.
713 	 */
714 	for (i = 0; i < psli->num_rings; i++) {
715 		pring = &psli->ring[i];
716 		while (!list_empty(&pring->txcmplq)) {
717 			msleep(10);
718 			if (cnt++ > 500) {  /* 5 secs */
719 				lpfc_printf_log(phba,
720 					KERN_WARNING, LOG_INIT,
721 					"0466 Outstanding IO when "
722 					"bringing Adapter offline\n");
723 				break;
724 			}
725 		}
726 	}
727 
728 	init_completion(&online_compl);
729 	rc = lpfc_workq_post_event(phba, &status, &online_compl, type);
730 	if (rc == 0)
731 		return -ENOMEM;
732 
733 	wait_for_completion(&online_compl);
734 
735 	if (status != 0)
736 		return -EIO;
737 
738 	return 0;
739 }
740 
741 /**
742  * lpfc_selective_reset - Offline then onlines the port
743  * @phba: lpfc_hba pointer.
744  *
745  * Description:
746  * If the port is configured to allow a reset then the hba is brought
747  * offline then online.
748  *
749  * Notes:
750  * Assumes any error from lpfc_do_offline() will be negative.
751  * Do not make this function static.
752  *
753  * Returns:
754  * lpfc_do_offline() return code if not zero
755  * -EIO reset not configured or error posting the event
756  * zero for success
757  **/
758 int
759 lpfc_selective_reset(struct lpfc_hba *phba)
760 {
761 	struct completion online_compl;
762 	int status = 0;
763 	int rc;
764 
765 	if (!phba->cfg_enable_hba_reset)
766 		return -EACCES;
767 
768 	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE)) {
769 		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
770 
771 		if (status != 0)
772 			return status;
773 	}
774 
775 	init_completion(&online_compl);
776 	rc = lpfc_workq_post_event(phba, &status, &online_compl,
777 			      LPFC_EVT_ONLINE);
778 	if (rc == 0)
779 		return -ENOMEM;
780 
781 	wait_for_completion(&online_compl);
782 
783 	if (status != 0)
784 		return -EIO;
785 
786 	return 0;
787 }
788 
789 /**
790  * lpfc_issue_reset - Selectively resets an adapter
791  * @dev: class device that is converted into a Scsi_host.
792  * @attr: device attribute, not used.
793  * @buf: containing the string "selective".
794  * @count: unused variable.
795  *
796  * Description:
797  * If the buf contains the string "selective" then lpfc_selective_reset()
798  * is called to perform the reset.
799  *
800  * Notes:
801  * Assumes any error from lpfc_selective_reset() will be negative.
802  * If lpfc_selective_reset() returns zero then the length of the buffer
803  * is returned which indicates success
804  *
805  * Returns:
806  * -EINVAL if the buffer does not contain the string "selective"
807  * length of buf if lpfc-selective_reset() if the call succeeds
808  * return value of lpfc_selective_reset() if the call fails
809 **/
810 static ssize_t
811 lpfc_issue_reset(struct device *dev, struct device_attribute *attr,
812 		 const char *buf, size_t count)
813 {
814 	struct Scsi_Host  *shost = class_to_shost(dev);
815 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
816 	struct lpfc_hba   *phba = vport->phba;
817 	int status = -EINVAL;
818 
819 	if (!phba->cfg_enable_hba_reset)
820 		return -EACCES;
821 
822 	if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
823 		status = phba->lpfc_selective_reset(phba);
824 
825 	if (status == 0)
826 		return strlen(buf);
827 	else
828 		return status;
829 }
830 
831 /**
832  * lpfc_sli4_pdev_status_reg_wait - Wait for pdev status register for readyness
833  * @phba: lpfc_hba pointer.
834  *
835  * Description:
836  * SLI4 interface type-2 device to wait on the sliport status register for
837  * the readyness after performing a firmware reset.
838  *
839  * Returns:
840  * zero for success, -EPERM when port does not have privilege to perform the
841  * reset, -EIO when port timeout from recovering from the reset.
842  *
843  * Note:
844  * As the caller will interpret the return code by value, be careful in making
845  * change or addition to return codes.
846  **/
847 int
848 lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba)
849 {
850 	struct lpfc_register portstat_reg = {0};
851 	int i;
852 
853 	msleep(100);
854 	lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
855 		   &portstat_reg.word0);
856 
857 	/* verify if privileged for the request operation */
858 	if (!bf_get(lpfc_sliport_status_rn, &portstat_reg) &&
859 	    !bf_get(lpfc_sliport_status_err, &portstat_reg))
860 		return -EPERM;
861 
862 	/* wait for the SLI port firmware ready after firmware reset */
863 	for (i = 0; i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT; i++) {
864 		msleep(10);
865 		lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
866 			   &portstat_reg.word0);
867 		if (!bf_get(lpfc_sliport_status_err, &portstat_reg))
868 			continue;
869 		if (!bf_get(lpfc_sliport_status_rn, &portstat_reg))
870 			continue;
871 		if (!bf_get(lpfc_sliport_status_rdy, &portstat_reg))
872 			continue;
873 		break;
874 	}
875 
876 	if (i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT)
877 		return 0;
878 	else
879 		return -EIO;
880 }
881 
882 /**
883  * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc
884  * @phba: lpfc_hba pointer.
885  *
886  * Description:
887  * Request SLI4 interface type-2 device to perform a physical register set
888  * access.
889  *
890  * Returns:
891  * zero for success
892  **/
893 static ssize_t
894 lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode)
895 {
896 	struct completion online_compl;
897 	struct pci_dev *pdev = phba->pcidev;
898 	uint32_t before_fc_flag;
899 	uint32_t sriov_nr_virtfn;
900 	uint32_t reg_val;
901 	int status = 0, rc = 0;
902 	int job_posted = 1, sriov_err;
903 
904 	if (!phba->cfg_enable_hba_reset)
905 		return -EACCES;
906 
907 	if ((phba->sli_rev < LPFC_SLI_REV4) ||
908 	    (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
909 	     LPFC_SLI_INTF_IF_TYPE_2))
910 		return -EPERM;
911 
912 	/* Keep state if we need to restore back */
913 	before_fc_flag = phba->pport->fc_flag;
914 	sriov_nr_virtfn = phba->cfg_sriov_nr_virtfn;
915 
916 	/* Disable SR-IOV virtual functions if enabled */
917 	if (phba->cfg_sriov_nr_virtfn) {
918 		pci_disable_sriov(pdev);
919 		phba->cfg_sriov_nr_virtfn = 0;
920 	}
921 
922 	status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
923 
924 	if (status != 0)
925 		return status;
926 
927 	/* wait for the device to be quiesced before firmware reset */
928 	msleep(100);
929 
930 	reg_val = readl(phba->sli4_hba.conf_regs_memmap_p +
931 			LPFC_CTL_PDEV_CTL_OFFSET);
932 
933 	if (opcode == LPFC_FW_DUMP)
934 		reg_val |= LPFC_FW_DUMP_REQUEST;
935 	else if (opcode == LPFC_FW_RESET)
936 		reg_val |= LPFC_CTL_PDEV_CTL_FRST;
937 	else if (opcode == LPFC_DV_RESET)
938 		reg_val |= LPFC_CTL_PDEV_CTL_DRST;
939 
940 	writel(reg_val, phba->sli4_hba.conf_regs_memmap_p +
941 	       LPFC_CTL_PDEV_CTL_OFFSET);
942 	/* flush */
943 	readl(phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET);
944 
945 	/* delay driver action following IF_TYPE_2 reset */
946 	rc = lpfc_sli4_pdev_status_reg_wait(phba);
947 
948 	if (rc == -EPERM) {
949 		/* no privilege for reset */
950 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
951 				"3150 No privilege to perform the requested "
952 				"access: x%x\n", reg_val);
953 	} else if (rc == -EIO) {
954 		/* reset failed, there is nothing more we can do */
955 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
956 				"3153 Fail to perform the requested "
957 				"access: x%x\n", reg_val);
958 		return rc;
959 	}
960 
961 	/* keep the original port state */
962 	if (before_fc_flag & FC_OFFLINE_MODE)
963 		goto out;
964 
965 	init_completion(&online_compl);
966 	job_posted = lpfc_workq_post_event(phba, &status, &online_compl,
967 					   LPFC_EVT_ONLINE);
968 	if (!job_posted)
969 		goto out;
970 
971 	wait_for_completion(&online_compl);
972 
973 out:
974 	/* in any case, restore the virtual functions enabled as before */
975 	if (sriov_nr_virtfn) {
976 		sriov_err =
977 			lpfc_sli_probe_sriov_nr_virtfn(phba, sriov_nr_virtfn);
978 		if (!sriov_err)
979 			phba->cfg_sriov_nr_virtfn = sriov_nr_virtfn;
980 	}
981 
982 	/* return proper error code */
983 	if (!rc) {
984 		if (!job_posted)
985 			rc = -ENOMEM;
986 		else if (status)
987 			rc = -EIO;
988 	}
989 	return rc;
990 }
991 
992 /**
993  * lpfc_nport_evt_cnt_show - Return the number of nport events
994  * @dev: class device that is converted into a Scsi_host.
995  * @attr: device attribute, not used.
996  * @buf: on return contains the ascii number of nport events.
997  *
998  * Returns: size of formatted string.
999  **/
1000 static ssize_t
1001 lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr,
1002 			char *buf)
1003 {
1004 	struct Scsi_Host  *shost = class_to_shost(dev);
1005 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1006 	struct lpfc_hba   *phba = vport->phba;
1007 
1008 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
1009 }
1010 
1011 /**
1012  * lpfc_board_mode_show - Return the state of the board
1013  * @dev: class device that is converted into a Scsi_host.
1014  * @attr: device attribute, not used.
1015  * @buf: on return contains the state of the adapter.
1016  *
1017  * Returns: size of formatted string.
1018  **/
1019 static ssize_t
1020 lpfc_board_mode_show(struct device *dev, struct device_attribute *attr,
1021 		     char *buf)
1022 {
1023 	struct Scsi_Host  *shost = class_to_shost(dev);
1024 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1025 	struct lpfc_hba   *phba = vport->phba;
1026 	char  * state;
1027 
1028 	if (phba->link_state == LPFC_HBA_ERROR)
1029 		state = "error";
1030 	else if (phba->link_state == LPFC_WARM_START)
1031 		state = "warm start";
1032 	else if (phba->link_state == LPFC_INIT_START)
1033 		state = "offline";
1034 	else
1035 		state = "online";
1036 
1037 	return snprintf(buf, PAGE_SIZE, "%s\n", state);
1038 }
1039 
1040 /**
1041  * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state
1042  * @dev: class device that is converted into a Scsi_host.
1043  * @attr: device attribute, not used.
1044  * @buf: containing one of the strings "online", "offline", "warm" or "error".
1045  * @count: unused variable.
1046  *
1047  * Returns:
1048  * -EACCES if enable hba reset not enabled
1049  * -EINVAL if the buffer does not contain a valid string (see above)
1050  * -EIO if lpfc_workq_post_event() or lpfc_do_offline() fails
1051  * buf length greater than zero indicates success
1052  **/
1053 static ssize_t
1054 lpfc_board_mode_store(struct device *dev, struct device_attribute *attr,
1055 		      const char *buf, size_t count)
1056 {
1057 	struct Scsi_Host  *shost = class_to_shost(dev);
1058 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1059 	struct lpfc_hba   *phba = vport->phba;
1060 	struct completion online_compl;
1061 	char *board_mode_str = NULL;
1062 	int status = 0;
1063 	int rc;
1064 
1065 	if (!phba->cfg_enable_hba_reset) {
1066 		status = -EACCES;
1067 		goto board_mode_out;
1068 	}
1069 
1070 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1071 			 "3050 lpfc_board_mode set to %s\n", buf);
1072 
1073 	init_completion(&online_compl);
1074 
1075 	if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
1076 		rc = lpfc_workq_post_event(phba, &status, &online_compl,
1077 				      LPFC_EVT_ONLINE);
1078 		if (rc == 0) {
1079 			status = -ENOMEM;
1080 			goto board_mode_out;
1081 		}
1082 		wait_for_completion(&online_compl);
1083 	} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
1084 		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1085 	else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
1086 		if (phba->sli_rev == LPFC_SLI_REV4)
1087 			status = -EINVAL;
1088 		else
1089 			status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
1090 	else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
1091 		if (phba->sli_rev == LPFC_SLI_REV4)
1092 			status = -EINVAL;
1093 		else
1094 			status = lpfc_do_offline(phba, LPFC_EVT_KILL);
1095 	else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0)
1096 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_DUMP);
1097 	else if (strncmp(buf, "fw_reset", sizeof("fw_reset") - 1) == 0)
1098 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_RESET);
1099 	else if (strncmp(buf, "dv_reset", sizeof("dv_reset") - 1) == 0)
1100 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_DV_RESET);
1101 	else
1102 		status = -EINVAL;
1103 
1104 board_mode_out:
1105 	if (!status)
1106 		return strlen(buf);
1107 	else {
1108 		board_mode_str = strchr(buf, '\n');
1109 		if (board_mode_str)
1110 			*board_mode_str = '\0';
1111 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1112 				 "3097 Failed \"%s\", status(%d), "
1113 				 "fc_flag(x%x)\n",
1114 				 buf, status, phba->pport->fc_flag);
1115 		return status;
1116 	}
1117 }
1118 
1119 /**
1120  * lpfc_get_hba_info - Return various bits of informaton about the adapter
1121  * @phba: pointer to the adapter structure.
1122  * @mxri: max xri count.
1123  * @axri: available xri count.
1124  * @mrpi: max rpi count.
1125  * @arpi: available rpi count.
1126  * @mvpi: max vpi count.
1127  * @avpi: available vpi count.
1128  *
1129  * Description:
1130  * If an integer pointer for an count is not null then the value for the
1131  * count is returned.
1132  *
1133  * Returns:
1134  * zero on error
1135  * one for success
1136  **/
1137 static int
1138 lpfc_get_hba_info(struct lpfc_hba *phba,
1139 		  uint32_t *mxri, uint32_t *axri,
1140 		  uint32_t *mrpi, uint32_t *arpi,
1141 		  uint32_t *mvpi, uint32_t *avpi)
1142 {
1143 	struct lpfc_mbx_read_config *rd_config;
1144 	LPFC_MBOXQ_t *pmboxq;
1145 	MAILBOX_t *pmb;
1146 	int rc = 0;
1147 	uint32_t max_vpi;
1148 
1149 	/*
1150 	 * prevent udev from issuing mailbox commands until the port is
1151 	 * configured.
1152 	 */
1153 	if (phba->link_state < LPFC_LINK_DOWN ||
1154 	    !phba->mbox_mem_pool ||
1155 	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
1156 		return 0;
1157 
1158 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
1159 		return 0;
1160 
1161 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1162 	if (!pmboxq)
1163 		return 0;
1164 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1165 
1166 	pmb = &pmboxq->u.mb;
1167 	pmb->mbxCommand = MBX_READ_CONFIG;
1168 	pmb->mbxOwner = OWN_HOST;
1169 	pmboxq->context1 = NULL;
1170 
1171 	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
1172 		rc = MBX_NOT_FINISHED;
1173 	else
1174 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1175 
1176 	if (rc != MBX_SUCCESS) {
1177 		if (rc != MBX_TIMEOUT)
1178 			mempool_free(pmboxq, phba->mbox_mem_pool);
1179 		return 0;
1180 	}
1181 
1182 	if (phba->sli_rev == LPFC_SLI_REV4) {
1183 		rd_config = &pmboxq->u.mqe.un.rd_config;
1184 		if (mrpi)
1185 			*mrpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
1186 		if (arpi)
1187 			*arpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config) -
1188 					phba->sli4_hba.max_cfg_param.rpi_used;
1189 		if (mxri)
1190 			*mxri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
1191 		if (axri)
1192 			*axri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config) -
1193 					phba->sli4_hba.max_cfg_param.xri_used;
1194 
1195 		/* Account for differences with SLI-3.  Get vpi count from
1196 		 * mailbox data and subtract one for max vpi value.
1197 		 */
1198 		max_vpi = (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) > 0) ?
1199 			(bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) - 1) : 0;
1200 
1201 		if (mvpi)
1202 			*mvpi = max_vpi;
1203 		if (avpi)
1204 			*avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used;
1205 	} else {
1206 		if (mrpi)
1207 			*mrpi = pmb->un.varRdConfig.max_rpi;
1208 		if (arpi)
1209 			*arpi = pmb->un.varRdConfig.avail_rpi;
1210 		if (mxri)
1211 			*mxri = pmb->un.varRdConfig.max_xri;
1212 		if (axri)
1213 			*axri = pmb->un.varRdConfig.avail_xri;
1214 		if (mvpi)
1215 			*mvpi = pmb->un.varRdConfig.max_vpi;
1216 		if (avpi)
1217 			*avpi = pmb->un.varRdConfig.avail_vpi;
1218 	}
1219 
1220 	mempool_free(pmboxq, phba->mbox_mem_pool);
1221 	return 1;
1222 }
1223 
1224 /**
1225  * lpfc_max_rpi_show - Return maximum rpi
1226  * @dev: class device that is converted into a Scsi_host.
1227  * @attr: device attribute, not used.
1228  * @buf: on return contains the maximum rpi count in decimal or "Unknown".
1229  *
1230  * Description:
1231  * Calls lpfc_get_hba_info() asking for just the mrpi count.
1232  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1233  * to "Unknown" and the buffer length is returned, therefore the caller
1234  * must check for "Unknown" in the buffer to detect a failure.
1235  *
1236  * Returns: size of formatted string.
1237  **/
1238 static ssize_t
1239 lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr,
1240 		  char *buf)
1241 {
1242 	struct Scsi_Host  *shost = class_to_shost(dev);
1243 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1244 	struct lpfc_hba   *phba = vport->phba;
1245 	uint32_t cnt;
1246 
1247 	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL))
1248 		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
1249 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1250 }
1251 
1252 /**
1253  * lpfc_used_rpi_show - Return maximum rpi minus available rpi
1254  * @dev: class device that is converted into a Scsi_host.
1255  * @attr: device attribute, not used.
1256  * @buf: containing the used rpi count in decimal or "Unknown".
1257  *
1258  * Description:
1259  * Calls lpfc_get_hba_info() asking for just the mrpi and arpi counts.
1260  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1261  * to "Unknown" and the buffer length is returned, therefore the caller
1262  * must check for "Unknown" in the buffer to detect a failure.
1263  *
1264  * Returns: size of formatted string.
1265  **/
1266 static ssize_t
1267 lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr,
1268 		   char *buf)
1269 {
1270 	struct Scsi_Host  *shost = class_to_shost(dev);
1271 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1272 	struct lpfc_hba   *phba = vport->phba;
1273 	uint32_t cnt, acnt;
1274 
1275 	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL))
1276 		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
1277 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1278 }
1279 
1280 /**
1281  * lpfc_max_xri_show - Return maximum xri
1282  * @dev: class device that is converted into a Scsi_host.
1283  * @attr: device attribute, not used.
1284  * @buf: on return contains the maximum xri count in decimal or "Unknown".
1285  *
1286  * Description:
1287  * Calls lpfc_get_hba_info() asking for just the mrpi count.
1288  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1289  * to "Unknown" and the buffer length is returned, therefore the caller
1290  * must check for "Unknown" in the buffer to detect a failure.
1291  *
1292  * Returns: size of formatted string.
1293  **/
1294 static ssize_t
1295 lpfc_max_xri_show(struct device *dev, struct device_attribute *attr,
1296 		  char *buf)
1297 {
1298 	struct Scsi_Host  *shost = class_to_shost(dev);
1299 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1300 	struct lpfc_hba   *phba = vport->phba;
1301 	uint32_t cnt;
1302 
1303 	if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL))
1304 		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
1305 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1306 }
1307 
1308 /**
1309  * lpfc_used_xri_show - Return maximum xpi minus the available xpi
1310  * @dev: class device that is converted into a Scsi_host.
1311  * @attr: device attribute, not used.
1312  * @buf: on return contains the used xri count in decimal or "Unknown".
1313  *
1314  * Description:
1315  * Calls lpfc_get_hba_info() asking for just the mxri and axri counts.
1316  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1317  * to "Unknown" and the buffer length is returned, therefore the caller
1318  * must check for "Unknown" in the buffer to detect a failure.
1319  *
1320  * Returns: size of formatted string.
1321  **/
1322 static ssize_t
1323 lpfc_used_xri_show(struct device *dev, struct device_attribute *attr,
1324 		   char *buf)
1325 {
1326 	struct Scsi_Host  *shost = class_to_shost(dev);
1327 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1328 	struct lpfc_hba   *phba = vport->phba;
1329 	uint32_t cnt, acnt;
1330 
1331 	if (lpfc_get_hba_info(phba, &cnt, &acnt, NULL, NULL, NULL, NULL))
1332 		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
1333 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1334 }
1335 
1336 /**
1337  * lpfc_max_vpi_show - Return maximum vpi
1338  * @dev: class device that is converted into a Scsi_host.
1339  * @attr: device attribute, not used.
1340  * @buf: on return contains the maximum vpi count in decimal or "Unknown".
1341  *
1342  * Description:
1343  * Calls lpfc_get_hba_info() asking for just the mvpi count.
1344  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1345  * to "Unknown" and the buffer length is returned, therefore the caller
1346  * must check for "Unknown" in the buffer to detect a failure.
1347  *
1348  * Returns: size of formatted string.
1349  **/
1350 static ssize_t
1351 lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr,
1352 		  char *buf)
1353 {
1354 	struct Scsi_Host  *shost = class_to_shost(dev);
1355 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1356 	struct lpfc_hba   *phba = vport->phba;
1357 	uint32_t cnt;
1358 
1359 	if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, NULL))
1360 		return snprintf(buf, PAGE_SIZE, "%d\n", cnt);
1361 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1362 }
1363 
1364 /**
1365  * lpfc_used_vpi_show - Return maximum vpi minus the available vpi
1366  * @dev: class device that is converted into a Scsi_host.
1367  * @attr: device attribute, not used.
1368  * @buf: on return contains the used vpi count in decimal or "Unknown".
1369  *
1370  * Description:
1371  * Calls lpfc_get_hba_info() asking for just the mvpi and avpi counts.
1372  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1373  * to "Unknown" and the buffer length is returned, therefore the caller
1374  * must check for "Unknown" in the buffer to detect a failure.
1375  *
1376  * Returns: size of formatted string.
1377  **/
1378 static ssize_t
1379 lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr,
1380 		   char *buf)
1381 {
1382 	struct Scsi_Host  *shost = class_to_shost(dev);
1383 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1384 	struct lpfc_hba   *phba = vport->phba;
1385 	uint32_t cnt, acnt;
1386 
1387 	if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, &acnt))
1388 		return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
1389 	return snprintf(buf, PAGE_SIZE, "Unknown\n");
1390 }
1391 
1392 /**
1393  * lpfc_npiv_info_show - Return text about NPIV support for the adapter
1394  * @dev: class device that is converted into a Scsi_host.
1395  * @attr: device attribute, not used.
1396  * @buf: text that must be interpreted to determine if npiv is supported.
1397  *
1398  * Description:
1399  * Buffer will contain text indicating npiv is not suppoerted on the port,
1400  * the port is an NPIV physical port, or it is an npiv virtual port with
1401  * the id of the vport.
1402  *
1403  * Returns: size of formatted string.
1404  **/
1405 static ssize_t
1406 lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr,
1407 		    char *buf)
1408 {
1409 	struct Scsi_Host  *shost = class_to_shost(dev);
1410 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1411 	struct lpfc_hba   *phba = vport->phba;
1412 
1413 	if (!(phba->max_vpi))
1414 		return snprintf(buf, PAGE_SIZE, "NPIV Not Supported\n");
1415 	if (vport->port_type == LPFC_PHYSICAL_PORT)
1416 		return snprintf(buf, PAGE_SIZE, "NPIV Physical\n");
1417 	return snprintf(buf, PAGE_SIZE, "NPIV Virtual (VPI %d)\n", vport->vpi);
1418 }
1419 
1420 /**
1421  * lpfc_poll_show - Return text about poll support for the adapter
1422  * @dev: class device that is converted into a Scsi_host.
1423  * @attr: device attribute, not used.
1424  * @buf: on return contains the cfg_poll in hex.
1425  *
1426  * Notes:
1427  * cfg_poll should be a lpfc_polling_flags type.
1428  *
1429  * Returns: size of formatted string.
1430  **/
1431 static ssize_t
1432 lpfc_poll_show(struct device *dev, struct device_attribute *attr,
1433 	       char *buf)
1434 {
1435 	struct Scsi_Host  *shost = class_to_shost(dev);
1436 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1437 	struct lpfc_hba   *phba = vport->phba;
1438 
1439 	return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
1440 }
1441 
1442 /**
1443  * lpfc_poll_store - Set the value of cfg_poll for the adapter
1444  * @dev: class device that is converted into a Scsi_host.
1445  * @attr: device attribute, not used.
1446  * @buf: one or more lpfc_polling_flags values.
1447  * @count: not used.
1448  *
1449  * Notes:
1450  * buf contents converted to integer and checked for a valid value.
1451  *
1452  * Returns:
1453  * -EINVAL if the buffer connot be converted or is out of range
1454  * length of the buf on success
1455  **/
1456 static ssize_t
1457 lpfc_poll_store(struct device *dev, struct device_attribute *attr,
1458 		const char *buf, size_t count)
1459 {
1460 	struct Scsi_Host  *shost = class_to_shost(dev);
1461 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1462 	struct lpfc_hba   *phba = vport->phba;
1463 	uint32_t creg_val;
1464 	uint32_t old_val;
1465 	int val=0;
1466 
1467 	if (!isdigit(buf[0]))
1468 		return -EINVAL;
1469 
1470 	if (sscanf(buf, "%i", &val) != 1)
1471 		return -EINVAL;
1472 
1473 	if ((val & 0x3) != val)
1474 		return -EINVAL;
1475 
1476 	if (phba->sli_rev == LPFC_SLI_REV4)
1477 		val = 0;
1478 
1479 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1480 		"3051 lpfc_poll changed from %d to %d\n",
1481 		phba->cfg_poll, val);
1482 
1483 	spin_lock_irq(&phba->hbalock);
1484 
1485 	old_val = phba->cfg_poll;
1486 
1487 	if (val & ENABLE_FCP_RING_POLLING) {
1488 		if ((val & DISABLE_FCP_RING_INT) &&
1489 		    !(old_val & DISABLE_FCP_RING_INT)) {
1490 			if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1491 				spin_unlock_irq(&phba->hbalock);
1492 				return -EINVAL;
1493 			}
1494 			creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
1495 			writel(creg_val, phba->HCregaddr);
1496 			readl(phba->HCregaddr); /* flush */
1497 
1498 			lpfc_poll_start_timer(phba);
1499 		}
1500 	} else if (val != 0x0) {
1501 		spin_unlock_irq(&phba->hbalock);
1502 		return -EINVAL;
1503 	}
1504 
1505 	if (!(val & DISABLE_FCP_RING_INT) &&
1506 	    (old_val & DISABLE_FCP_RING_INT))
1507 	{
1508 		spin_unlock_irq(&phba->hbalock);
1509 		del_timer(&phba->fcp_poll_timer);
1510 		spin_lock_irq(&phba->hbalock);
1511 		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1512 			spin_unlock_irq(&phba->hbalock);
1513 			return -EINVAL;
1514 		}
1515 		creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1516 		writel(creg_val, phba->HCregaddr);
1517 		readl(phba->HCregaddr); /* flush */
1518 	}
1519 
1520 	phba->cfg_poll = val;
1521 
1522 	spin_unlock_irq(&phba->hbalock);
1523 
1524 	return strlen(buf);
1525 }
1526 
1527 /**
1528  * lpfc_fips_level_show - Return the current FIPS level for the HBA
1529  * @dev: class unused variable.
1530  * @attr: device attribute, not used.
1531  * @buf: on return contains the module description text.
1532  *
1533  * Returns: size of formatted string.
1534  **/
1535 static ssize_t
1536 lpfc_fips_level_show(struct device *dev,  struct device_attribute *attr,
1537 		     char *buf)
1538 {
1539 	struct Scsi_Host  *shost = class_to_shost(dev);
1540 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1541 	struct lpfc_hba   *phba = vport->phba;
1542 
1543 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_level);
1544 }
1545 
1546 /**
1547  * lpfc_fips_rev_show - Return the FIPS Spec revision for the HBA
1548  * @dev: class unused variable.
1549  * @attr: device attribute, not used.
1550  * @buf: on return contains the module description text.
1551  *
1552  * Returns: size of formatted string.
1553  **/
1554 static ssize_t
1555 lpfc_fips_rev_show(struct device *dev,  struct device_attribute *attr,
1556 		   char *buf)
1557 {
1558 	struct Scsi_Host  *shost = class_to_shost(dev);
1559 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1560 	struct lpfc_hba   *phba = vport->phba;
1561 
1562 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_spec_rev);
1563 }
1564 
1565 /**
1566  * lpfc_dss_show - Return the current state of dss and the configured state
1567  * @dev: class converted to a Scsi_host structure.
1568  * @attr: device attribute, not used.
1569  * @buf: on return contains the formatted text.
1570  *
1571  * Returns: size of formatted string.
1572  **/
1573 static ssize_t
1574 lpfc_dss_show(struct device *dev, struct device_attribute *attr,
1575 	      char *buf)
1576 {
1577 	struct Scsi_Host *shost = class_to_shost(dev);
1578 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1579 	struct lpfc_hba   *phba = vport->phba;
1580 
1581 	return snprintf(buf, PAGE_SIZE, "%s - %sOperational\n",
1582 			(phba->cfg_enable_dss) ? "Enabled" : "Disabled",
1583 			(phba->sli3_options & LPFC_SLI3_DSS_ENABLED) ?
1584 				"" : "Not ");
1585 }
1586 
1587 /**
1588  * lpfc_sriov_hw_max_virtfn_show - Return maximum number of virtual functions
1589  * @dev: class converted to a Scsi_host structure.
1590  * @attr: device attribute, not used.
1591  * @buf: on return contains the formatted support level.
1592  *
1593  * Description:
1594  * Returns the maximum number of virtual functions a physical function can
1595  * support, 0 will be returned if called on virtual function.
1596  *
1597  * Returns: size of formatted string.
1598  **/
1599 static ssize_t
1600 lpfc_sriov_hw_max_virtfn_show(struct device *dev,
1601 			      struct device_attribute *attr,
1602 			      char *buf)
1603 {
1604 	struct Scsi_Host *shost = class_to_shost(dev);
1605 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1606 	struct lpfc_hba *phba = vport->phba;
1607 	uint16_t max_nr_virtfn;
1608 
1609 	max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba);
1610 	return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn);
1611 }
1612 
1613 /**
1614  * lpfc_param_show - Return a cfg attribute value in decimal
1615  *
1616  * Description:
1617  * Macro that given an attr e.g. hba_queue_depth expands
1618  * into a function with the name lpfc_hba_queue_depth_show.
1619  *
1620  * lpfc_##attr##_show: Return the decimal value of an adapters cfg_xxx field.
1621  * @dev: class device that is converted into a Scsi_host.
1622  * @attr: device attribute, not used.
1623  * @buf: on return contains the attribute value in decimal.
1624  *
1625  * Returns: size of formatted string.
1626  **/
1627 #define lpfc_param_show(attr)	\
1628 static ssize_t \
1629 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
1630 		   char *buf) \
1631 { \
1632 	struct Scsi_Host  *shost = class_to_shost(dev);\
1633 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1634 	struct lpfc_hba   *phba = vport->phba;\
1635 	uint val = 0;\
1636 	val = phba->cfg_##attr;\
1637 	return snprintf(buf, PAGE_SIZE, "%d\n",\
1638 			phba->cfg_##attr);\
1639 }
1640 
1641 /**
1642  * lpfc_param_hex_show - Return a cfg attribute value in hex
1643  *
1644  * Description:
1645  * Macro that given an attr e.g. hba_queue_depth expands
1646  * into a function with the name lpfc_hba_queue_depth_show
1647  *
1648  * lpfc_##attr##_show: Return the hex value of an adapters cfg_xxx field.
1649  * @dev: class device that is converted into a Scsi_host.
1650  * @attr: device attribute, not used.
1651  * @buf: on return contains the attribute value in hexadecimal.
1652  *
1653  * Returns: size of formatted string.
1654  **/
1655 #define lpfc_param_hex_show(attr)	\
1656 static ssize_t \
1657 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
1658 		   char *buf) \
1659 { \
1660 	struct Scsi_Host  *shost = class_to_shost(dev);\
1661 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1662 	struct lpfc_hba   *phba = vport->phba;\
1663 	uint val = 0;\
1664 	val = phba->cfg_##attr;\
1665 	return snprintf(buf, PAGE_SIZE, "%#x\n",\
1666 			phba->cfg_##attr);\
1667 }
1668 
1669 /**
1670  * lpfc_param_init - Initializes a cfg attribute
1671  *
1672  * Description:
1673  * Macro that given an attr e.g. hba_queue_depth expands
1674  * into a function with the name lpfc_hba_queue_depth_init. The macro also
1675  * takes a default argument, a minimum and maximum argument.
1676  *
1677  * lpfc_##attr##_init: Initializes an attribute.
1678  * @phba: pointer the the adapter structure.
1679  * @val: integer attribute value.
1680  *
1681  * Validates the min and max values then sets the adapter config field
1682  * accordingly, or uses the default if out of range and prints an error message.
1683  *
1684  * Returns:
1685  * zero on success
1686  * -EINVAL if default used
1687  **/
1688 #define lpfc_param_init(attr, default, minval, maxval)	\
1689 static int \
1690 lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \
1691 { \
1692 	if (val >= minval && val <= maxval) {\
1693 		phba->cfg_##attr = val;\
1694 		return 0;\
1695 	}\
1696 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
1697 			"0449 lpfc_"#attr" attribute cannot be set to %d, "\
1698 			"allowed range is ["#minval", "#maxval"]\n", val); \
1699 	phba->cfg_##attr = default;\
1700 	return -EINVAL;\
1701 }
1702 
1703 /**
1704  * lpfc_param_set - Set a cfg attribute value
1705  *
1706  * Description:
1707  * Macro that given an attr e.g. hba_queue_depth expands
1708  * into a function with the name lpfc_hba_queue_depth_set
1709  *
1710  * lpfc_##attr##_set: Sets an attribute value.
1711  * @phba: pointer the the adapter structure.
1712  * @val: integer attribute value.
1713  *
1714  * Description:
1715  * Validates the min and max values then sets the
1716  * adapter config field if in the valid range. prints error message
1717  * and does not set the parameter if invalid.
1718  *
1719  * Returns:
1720  * zero on success
1721  * -EINVAL if val is invalid
1722  **/
1723 #define lpfc_param_set(attr, default, minval, maxval)	\
1724 static int \
1725 lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \
1726 { \
1727 	if (val >= minval && val <= maxval) {\
1728 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
1729 			"3052 lpfc_" #attr " changed from %d to %d\n", \
1730 			phba->cfg_##attr, val); \
1731 		phba->cfg_##attr = val;\
1732 		return 0;\
1733 	}\
1734 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
1735 			"0450 lpfc_"#attr" attribute cannot be set to %d, "\
1736 			"allowed range is ["#minval", "#maxval"]\n", val); \
1737 	return -EINVAL;\
1738 }
1739 
1740 /**
1741  * lpfc_param_store - Set a vport attribute value
1742  *
1743  * Description:
1744  * Macro that given an attr e.g. hba_queue_depth expands
1745  * into a function with the name lpfc_hba_queue_depth_store.
1746  *
1747  * lpfc_##attr##_store: Set an sttribute value.
1748  * @dev: class device that is converted into a Scsi_host.
1749  * @attr: device attribute, not used.
1750  * @buf: contains the attribute value in ascii.
1751  * @count: not used.
1752  *
1753  * Description:
1754  * Convert the ascii text number to an integer, then
1755  * use the lpfc_##attr##_set function to set the value.
1756  *
1757  * Returns:
1758  * -EINVAL if val is invalid or lpfc_##attr##_set() fails
1759  * length of buffer upon success.
1760  **/
1761 #define lpfc_param_store(attr)	\
1762 static ssize_t \
1763 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
1764 		    const char *buf, size_t count) \
1765 { \
1766 	struct Scsi_Host  *shost = class_to_shost(dev);\
1767 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1768 	struct lpfc_hba   *phba = vport->phba;\
1769 	uint val = 0;\
1770 	if (!isdigit(buf[0]))\
1771 		return -EINVAL;\
1772 	if (sscanf(buf, "%i", &val) != 1)\
1773 		return -EINVAL;\
1774 	if (lpfc_##attr##_set(phba, val) == 0) \
1775 		return strlen(buf);\
1776 	else \
1777 		return -EINVAL;\
1778 }
1779 
1780 /**
1781  * lpfc_vport_param_show - Return decimal formatted cfg attribute value
1782  *
1783  * Description:
1784  * Macro that given an attr e.g. hba_queue_depth expands
1785  * into a function with the name lpfc_hba_queue_depth_show
1786  *
1787  * lpfc_##attr##_show: prints the attribute value in decimal.
1788  * @dev: class device that is converted into a Scsi_host.
1789  * @attr: device attribute, not used.
1790  * @buf: on return contains the attribute value in decimal.
1791  *
1792  * Returns: length of formatted string.
1793  **/
1794 #define lpfc_vport_param_show(attr)	\
1795 static ssize_t \
1796 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
1797 		   char *buf) \
1798 { \
1799 	struct Scsi_Host  *shost = class_to_shost(dev);\
1800 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1801 	uint val = 0;\
1802 	val = vport->cfg_##attr;\
1803 	return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\
1804 }
1805 
1806 /**
1807  * lpfc_vport_param_hex_show - Return hex formatted attribute value
1808  *
1809  * Description:
1810  * Macro that given an attr e.g.
1811  * hba_queue_depth expands into a function with the name
1812  * lpfc_hba_queue_depth_show
1813  *
1814  * lpfc_##attr##_show: prints the attribute value in hexadecimal.
1815  * @dev: class device that is converted into a Scsi_host.
1816  * @attr: device attribute, not used.
1817  * @buf: on return contains the attribute value in hexadecimal.
1818  *
1819  * Returns: length of formatted string.
1820  **/
1821 #define lpfc_vport_param_hex_show(attr)	\
1822 static ssize_t \
1823 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
1824 		   char *buf) \
1825 { \
1826 	struct Scsi_Host  *shost = class_to_shost(dev);\
1827 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1828 	uint val = 0;\
1829 	val = vport->cfg_##attr;\
1830 	return snprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\
1831 }
1832 
1833 /**
1834  * lpfc_vport_param_init - Initialize a vport cfg attribute
1835  *
1836  * Description:
1837  * Macro that given an attr e.g. hba_queue_depth expands
1838  * into a function with the name lpfc_hba_queue_depth_init. The macro also
1839  * takes a default argument, a minimum and maximum argument.
1840  *
1841  * lpfc_##attr##_init: validates the min and max values then sets the
1842  * adapter config field accordingly, or uses the default if out of range
1843  * and prints an error message.
1844  * @phba: pointer the the adapter structure.
1845  * @val: integer attribute value.
1846  *
1847  * Returns:
1848  * zero on success
1849  * -EINVAL if default used
1850  **/
1851 #define lpfc_vport_param_init(attr, default, minval, maxval)	\
1852 static int \
1853 lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \
1854 { \
1855 	if (val >= minval && val <= maxval) {\
1856 		vport->cfg_##attr = val;\
1857 		return 0;\
1858 	}\
1859 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1860 			 "0423 lpfc_"#attr" attribute cannot be set to %d, "\
1861 			 "allowed range is ["#minval", "#maxval"]\n", val); \
1862 	vport->cfg_##attr = default;\
1863 	return -EINVAL;\
1864 }
1865 
1866 /**
1867  * lpfc_vport_param_set - Set a vport cfg attribute
1868  *
1869  * Description:
1870  * Macro that given an attr e.g. hba_queue_depth expands
1871  * into a function with the name lpfc_hba_queue_depth_set
1872  *
1873  * lpfc_##attr##_set: validates the min and max values then sets the
1874  * adapter config field if in the valid range. prints error message
1875  * and does not set the parameter if invalid.
1876  * @phba: pointer the the adapter structure.
1877  * @val:	integer attribute value.
1878  *
1879  * Returns:
1880  * zero on success
1881  * -EINVAL if val is invalid
1882  **/
1883 #define lpfc_vport_param_set(attr, default, minval, maxval)	\
1884 static int \
1885 lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \
1886 { \
1887 	if (val >= minval && val <= maxval) {\
1888 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1889 			"3053 lpfc_" #attr \
1890 			" changed from %d (x%x) to %d (x%x)\n", \
1891 			vport->cfg_##attr, vport->cfg_##attr, \
1892 			val, val); \
1893 		vport->cfg_##attr = val;\
1894 		return 0;\
1895 	}\
1896 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
1897 			 "0424 lpfc_"#attr" attribute cannot be set to %d, "\
1898 			 "allowed range is ["#minval", "#maxval"]\n", val); \
1899 	return -EINVAL;\
1900 }
1901 
1902 /**
1903  * lpfc_vport_param_store - Set a vport attribute
1904  *
1905  * Description:
1906  * Macro that given an attr e.g. hba_queue_depth
1907  * expands into a function with the name lpfc_hba_queue_depth_store
1908  *
1909  * lpfc_##attr##_store: convert the ascii text number to an integer, then
1910  * use the lpfc_##attr##_set function to set the value.
1911  * @cdev: class device that is converted into a Scsi_host.
1912  * @buf:	contains the attribute value in decimal.
1913  * @count: not used.
1914  *
1915  * Returns:
1916  * -EINVAL if val is invalid or lpfc_##attr##_set() fails
1917  * length of buffer upon success.
1918  **/
1919 #define lpfc_vport_param_store(attr)	\
1920 static ssize_t \
1921 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
1922 		    const char *buf, size_t count) \
1923 { \
1924 	struct Scsi_Host  *shost = class_to_shost(dev);\
1925 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
1926 	uint val = 0;\
1927 	if (!isdigit(buf[0]))\
1928 		return -EINVAL;\
1929 	if (sscanf(buf, "%i", &val) != 1)\
1930 		return -EINVAL;\
1931 	if (lpfc_##attr##_set(vport, val) == 0) \
1932 		return strlen(buf);\
1933 	else \
1934 		return -EINVAL;\
1935 }
1936 
1937 
1938 #define LPFC_ATTR(name, defval, minval, maxval, desc) \
1939 static uint lpfc_##name = defval;\
1940 module_param(lpfc_##name, uint, S_IRUGO);\
1941 MODULE_PARM_DESC(lpfc_##name, desc);\
1942 lpfc_param_init(name, defval, minval, maxval)
1943 
1944 #define LPFC_ATTR_R(name, defval, minval, maxval, desc) \
1945 static uint lpfc_##name = defval;\
1946 module_param(lpfc_##name, uint, S_IRUGO);\
1947 MODULE_PARM_DESC(lpfc_##name, desc);\
1948 lpfc_param_show(name)\
1949 lpfc_param_init(name, defval, minval, maxval)\
1950 static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
1951 
1952 #define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \
1953 static uint lpfc_##name = defval;\
1954 module_param(lpfc_##name, uint, S_IRUGO);\
1955 MODULE_PARM_DESC(lpfc_##name, desc);\
1956 lpfc_param_show(name)\
1957 lpfc_param_init(name, defval, minval, maxval)\
1958 lpfc_param_set(name, defval, minval, maxval)\
1959 lpfc_param_store(name)\
1960 static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
1961 		   lpfc_##name##_show, lpfc_##name##_store)
1962 
1963 #define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \
1964 static uint lpfc_##name = defval;\
1965 module_param(lpfc_##name, uint, S_IRUGO);\
1966 MODULE_PARM_DESC(lpfc_##name, desc);\
1967 lpfc_param_hex_show(name)\
1968 lpfc_param_init(name, defval, minval, maxval)\
1969 static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
1970 
1971 #define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
1972 static uint lpfc_##name = defval;\
1973 module_param(lpfc_##name, uint, S_IRUGO);\
1974 MODULE_PARM_DESC(lpfc_##name, desc);\
1975 lpfc_param_hex_show(name)\
1976 lpfc_param_init(name, defval, minval, maxval)\
1977 lpfc_param_set(name, defval, minval, maxval)\
1978 lpfc_param_store(name)\
1979 static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
1980 		   lpfc_##name##_show, lpfc_##name##_store)
1981 
1982 #define LPFC_VPORT_ATTR(name, defval, minval, maxval, desc) \
1983 static uint lpfc_##name = defval;\
1984 module_param(lpfc_##name, uint, S_IRUGO);\
1985 MODULE_PARM_DESC(lpfc_##name, desc);\
1986 lpfc_vport_param_init(name, defval, minval, maxval)
1987 
1988 #define LPFC_VPORT_ATTR_R(name, defval, minval, maxval, desc) \
1989 static uint lpfc_##name = defval;\
1990 module_param(lpfc_##name, uint, S_IRUGO);\
1991 MODULE_PARM_DESC(lpfc_##name, desc);\
1992 lpfc_vport_param_show(name)\
1993 lpfc_vport_param_init(name, defval, minval, maxval)\
1994 static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
1995 
1996 #define LPFC_VPORT_ATTR_RW(name, defval, minval, maxval, desc) \
1997 static uint lpfc_##name = defval;\
1998 module_param(lpfc_##name, uint, S_IRUGO);\
1999 MODULE_PARM_DESC(lpfc_##name, desc);\
2000 lpfc_vport_param_show(name)\
2001 lpfc_vport_param_init(name, defval, minval, maxval)\
2002 lpfc_vport_param_set(name, defval, minval, maxval)\
2003 lpfc_vport_param_store(name)\
2004 static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
2005 		   lpfc_##name##_show, lpfc_##name##_store)
2006 
2007 #define LPFC_VPORT_ATTR_HEX_R(name, defval, minval, maxval, desc) \
2008 static uint lpfc_##name = defval;\
2009 module_param(lpfc_##name, uint, S_IRUGO);\
2010 MODULE_PARM_DESC(lpfc_##name, desc);\
2011 lpfc_vport_param_hex_show(name)\
2012 lpfc_vport_param_init(name, defval, minval, maxval)\
2013 static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
2014 
2015 #define LPFC_VPORT_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
2016 static uint lpfc_##name = defval;\
2017 module_param(lpfc_##name, uint, S_IRUGO);\
2018 MODULE_PARM_DESC(lpfc_##name, desc);\
2019 lpfc_vport_param_hex_show(name)\
2020 lpfc_vport_param_init(name, defval, minval, maxval)\
2021 lpfc_vport_param_set(name, defval, minval, maxval)\
2022 lpfc_vport_param_store(name)\
2023 static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
2024 		   lpfc_##name##_show, lpfc_##name##_store)
2025 
2026 static DEVICE_ATTR(bg_info, S_IRUGO, lpfc_bg_info_show, NULL);
2027 static DEVICE_ATTR(bg_guard_err, S_IRUGO, lpfc_bg_guard_err_show, NULL);
2028 static DEVICE_ATTR(bg_apptag_err, S_IRUGO, lpfc_bg_apptag_err_show, NULL);
2029 static DEVICE_ATTR(bg_reftag_err, S_IRUGO, lpfc_bg_reftag_err_show, NULL);
2030 static DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
2031 static DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
2032 static DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
2033 static DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
2034 static DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
2035 static DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL);
2036 static DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
2037 static DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
2038 static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show,
2039 		lpfc_link_state_store);
2040 static DEVICE_ATTR(option_rom_version, S_IRUGO,
2041 		   lpfc_option_rom_version_show, NULL);
2042 static DEVICE_ATTR(num_discovered_ports, S_IRUGO,
2043 		   lpfc_num_discovered_ports_show, NULL);
2044 static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
2045 static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
2046 static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show, NULL);
2047 static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL);
2048 static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
2049 		   lpfc_board_mode_show, lpfc_board_mode_store);
2050 static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
2051 static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL);
2052 static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL);
2053 static DEVICE_ATTR(max_rpi, S_IRUGO, lpfc_max_rpi_show, NULL);
2054 static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
2055 static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
2056 static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
2057 static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
2058 static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show, NULL);
2059 static DEVICE_ATTR(lpfc_fips_level, S_IRUGO, lpfc_fips_level_show, NULL);
2060 static DEVICE_ATTR(lpfc_fips_rev, S_IRUGO, lpfc_fips_rev_show, NULL);
2061 static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL);
2062 static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO,
2063 		   lpfc_sriov_hw_max_virtfn_show, NULL);
2064 static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
2065 static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
2066 		   NULL);
2067 
2068 static char *lpfc_soft_wwn_key = "C99G71SL8032A";
2069 #define WWN_SZ 8
2070 /**
2071  * lpfc_wwn_set - Convert string to the 8 byte WWN value.
2072  * @buf: WWN string.
2073  * @cnt: Length of string.
2074  * @wwn: Array to receive converted wwn value.
2075  *
2076  * Returns:
2077  * -EINVAL if the buffer does not contain a valid wwn
2078  * 0 success
2079  **/
2080 static size_t
2081 lpfc_wwn_set(const char *buf, size_t cnt, char wwn[])
2082 {
2083 	unsigned int i, j;
2084 
2085 	/* Count may include a LF at end of string */
2086 	if (buf[cnt-1] == '\n')
2087 		cnt--;
2088 
2089 	if ((cnt < 16) || (cnt > 18) || ((cnt == 17) && (*buf++ != 'x')) ||
2090 	    ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
2091 		return -EINVAL;
2092 
2093 	memset(wwn, 0, WWN_SZ);
2094 
2095 	/* Validate and store the new name */
2096 	for (i = 0, j = 0; i < 16; i++) {
2097 		if ((*buf >= 'a') && (*buf <= 'f'))
2098 			j = ((j << 4) | ((*buf++ - 'a') + 10));
2099 		else if ((*buf >= 'A') && (*buf <= 'F'))
2100 			j = ((j << 4) | ((*buf++ - 'A') + 10));
2101 		else if ((*buf >= '0') && (*buf <= '9'))
2102 			j = ((j << 4) | (*buf++ - '0'));
2103 		else
2104 			return -EINVAL;
2105 		if (i % 2) {
2106 			wwn[i/2] = j & 0xff;
2107 			j = 0;
2108 		}
2109 	}
2110 	return 0;
2111 }
2112 /**
2113  * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
2114  * @dev: class device that is converted into a Scsi_host.
2115  * @attr: device attribute, not used.
2116  * @buf: containing the string lpfc_soft_wwn_key.
2117  * @count: must be size of lpfc_soft_wwn_key.
2118  *
2119  * Returns:
2120  * -EINVAL if the buffer does not contain lpfc_soft_wwn_key
2121  * length of buf indicates success
2122  **/
2123 static ssize_t
2124 lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
2125 			   const char *buf, size_t count)
2126 {
2127 	struct Scsi_Host  *shost = class_to_shost(dev);
2128 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2129 	struct lpfc_hba   *phba = vport->phba;
2130 	unsigned int cnt = count;
2131 
2132 	/*
2133 	 * We're doing a simple sanity check for soft_wwpn setting.
2134 	 * We require that the user write a specific key to enable
2135 	 * the soft_wwpn attribute to be settable. Once the attribute
2136 	 * is written, the enable key resets. If further updates are
2137 	 * desired, the key must be written again to re-enable the
2138 	 * attribute.
2139 	 *
2140 	 * The "key" is not secret - it is a hardcoded string shown
2141 	 * here. The intent is to protect against the random user or
2142 	 * application that is just writing attributes.
2143 	 */
2144 
2145 	/* count may include a LF at end of string */
2146 	if (buf[cnt-1] == '\n')
2147 		cnt--;
2148 
2149 	if ((cnt != strlen(lpfc_soft_wwn_key)) ||
2150 	    (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
2151 		return -EINVAL;
2152 
2153 	phba->soft_wwn_enable = 1;
2154 	return count;
2155 }
2156 static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
2157 		   lpfc_soft_wwn_enable_store);
2158 
2159 /**
2160  * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
2161  * @dev: class device that is converted into a Scsi_host.
2162  * @attr: device attribute, not used.
2163  * @buf: on return contains the wwpn in hexadecimal.
2164  *
2165  * Returns: size of formatted string.
2166  **/
2167 static ssize_t
2168 lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr,
2169 		    char *buf)
2170 {
2171 	struct Scsi_Host  *shost = class_to_shost(dev);
2172 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2173 	struct lpfc_hba   *phba = vport->phba;
2174 
2175 	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
2176 			(unsigned long long)phba->cfg_soft_wwpn);
2177 }
2178 
2179 /**
2180  * lpfc_soft_wwpn_store - Set the ww port name of the adapter
2181  * @dev class device that is converted into a Scsi_host.
2182  * @attr: device attribute, not used.
2183  * @buf: contains the wwpn in hexadecimal.
2184  * @count: number of wwpn bytes in buf
2185  *
2186  * Returns:
2187  * -EACCES hba reset not enabled, adapter over temp
2188  * -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid
2189  * -EIO error taking adapter offline or online
2190  * value of count on success
2191  **/
2192 static ssize_t
2193 lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
2194 		     const char *buf, size_t count)
2195 {
2196 	struct Scsi_Host  *shost = class_to_shost(dev);
2197 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2198 	struct lpfc_hba   *phba = vport->phba;
2199 	struct completion online_compl;
2200 	int stat1 = 0, stat2 = 0;
2201 	unsigned int cnt = count;
2202 	u8 wwpn[WWN_SZ];
2203 	int rc;
2204 
2205 	if (!phba->cfg_enable_hba_reset)
2206 		return -EACCES;
2207 	spin_lock_irq(&phba->hbalock);
2208 	if (phba->over_temp_state == HBA_OVER_TEMP) {
2209 		spin_unlock_irq(&phba->hbalock);
2210 		return -EACCES;
2211 	}
2212 	spin_unlock_irq(&phba->hbalock);
2213 	/* count may include a LF at end of string */
2214 	if (buf[cnt-1] == '\n')
2215 		cnt--;
2216 
2217 	if (!phba->soft_wwn_enable)
2218 		return -EINVAL;
2219 
2220 	/* lock setting wwpn, wwnn down */
2221 	phba->soft_wwn_enable = 0;
2222 
2223 	rc = lpfc_wwn_set(buf, cnt, wwpn);
2224 	if (!rc) {
2225 		/* not able to set wwpn, unlock it */
2226 		phba->soft_wwn_enable = 1;
2227 		return rc;
2228 	}
2229 
2230 	phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
2231 	fc_host_port_name(shost) = phba->cfg_soft_wwpn;
2232 	if (phba->cfg_soft_wwnn)
2233 		fc_host_node_name(shost) = phba->cfg_soft_wwnn;
2234 
2235 	dev_printk(KERN_NOTICE, &phba->pcidev->dev,
2236 		   "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
2237 
2238 	stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
2239 	if (stat1)
2240 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2241 				"0463 lpfc_soft_wwpn attribute set failed to "
2242 				"reinit adapter - %d\n", stat1);
2243 	init_completion(&online_compl);
2244 	rc = lpfc_workq_post_event(phba, &stat2, &online_compl,
2245 				   LPFC_EVT_ONLINE);
2246 	if (rc == 0)
2247 		return -ENOMEM;
2248 
2249 	wait_for_completion(&online_compl);
2250 	if (stat2)
2251 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2252 				"0464 lpfc_soft_wwpn attribute set failed to "
2253 				"reinit adapter - %d\n", stat2);
2254 	return (stat1 || stat2) ? -EIO : count;
2255 }
2256 static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,
2257 		   lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
2258 
2259 /**
2260  * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
2261  * @dev: class device that is converted into a Scsi_host.
2262  * @attr: device attribute, not used.
2263  * @buf: on return contains the wwnn in hexadecimal.
2264  *
2265  * Returns: size of formatted string.
2266  **/
2267 static ssize_t
2268 lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr,
2269 		    char *buf)
2270 {
2271 	struct Scsi_Host *shost = class_to_shost(dev);
2272 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2273 	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
2274 			(unsigned long long)phba->cfg_soft_wwnn);
2275 }
2276 
2277 /**
2278  * lpfc_soft_wwnn_store - sets the ww node name of the adapter
2279  * @cdev: class device that is converted into a Scsi_host.
2280  * @buf: contains the ww node name in hexadecimal.
2281  * @count: number of wwnn bytes in buf.
2282  *
2283  * Returns:
2284  * -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid
2285  * value of count on success
2286  **/
2287 static ssize_t
2288 lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
2289 		     const char *buf, size_t count)
2290 {
2291 	struct Scsi_Host *shost = class_to_shost(dev);
2292 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2293 	unsigned int cnt = count;
2294 	u8 wwnn[WWN_SZ];
2295 	int rc;
2296 
2297 	/* count may include a LF at end of string */
2298 	if (buf[cnt-1] == '\n')
2299 		cnt--;
2300 
2301 	if (!phba->soft_wwn_enable)
2302 		return -EINVAL;
2303 
2304 	rc = lpfc_wwn_set(buf, cnt, wwnn);
2305 	if (!rc) {
2306 		/* Allow wwnn to be set many times, as long as the enable
2307 		 * is set. However, once the wwpn is set, everything locks.
2308 		 */
2309 		return rc;
2310 	}
2311 
2312 	phba->cfg_soft_wwnn = wwn_to_u64(wwnn);
2313 
2314 	dev_printk(KERN_NOTICE, &phba->pcidev->dev,
2315 		   "lpfc%d: soft_wwnn set. Value will take effect upon "
2316 		   "setting of the soft_wwpn\n", phba->brd_no);
2317 
2318 	return count;
2319 }
2320 static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,
2321 		   lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
2322 
2323 /**
2324  * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for
2325  *		      Optimized Access Storage (OAS) operations.
2326  * @dev: class device that is converted into a Scsi_host.
2327  * @attr: device attribute, not used.
2328  * @buf: buffer for passing information.
2329  *
2330  * Returns:
2331  * value of count
2332  **/
2333 static ssize_t
2334 lpfc_oas_tgt_show(struct device *dev, struct device_attribute *attr,
2335 		  char *buf)
2336 {
2337 	struct Scsi_Host *shost = class_to_shost(dev);
2338 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2339 
2340 	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
2341 			wwn_to_u64(phba->cfg_oas_tgt_wwpn));
2342 }
2343 
2344 /**
2345  * lpfc_oas_tgt_store - Store wwpn of target whose luns maybe enabled for
2346  *		      Optimized Access Storage (OAS) operations.
2347  * @dev: class device that is converted into a Scsi_host.
2348  * @attr: device attribute, not used.
2349  * @buf: buffer for passing information.
2350  * @count: Size of the data buffer.
2351  *
2352  * Returns:
2353  * -EINVAL count is invalid, invalid wwpn byte invalid
2354  * -EPERM oas is not supported by hba
2355  * value of count on success
2356  **/
2357 static ssize_t
2358 lpfc_oas_tgt_store(struct device *dev, struct device_attribute *attr,
2359 		   const char *buf, size_t count)
2360 {
2361 	struct Scsi_Host *shost = class_to_shost(dev);
2362 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2363 	unsigned int cnt = count;
2364 	uint8_t wwpn[WWN_SZ];
2365 	int rc;
2366 
2367 	if (!phba->cfg_EnableXLane)
2368 		return -EPERM;
2369 
2370 	/* count may include a LF at end of string */
2371 	if (buf[cnt-1] == '\n')
2372 		cnt--;
2373 
2374 	rc = lpfc_wwn_set(buf, cnt, wwpn);
2375 	if (rc)
2376 		return rc;
2377 
2378 	memcpy(phba->cfg_oas_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2379 	memcpy(phba->sli4_hba.oas_next_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2380 	if (wwn_to_u64(wwpn) == 0)
2381 		phba->cfg_oas_flags |= OAS_FIND_ANY_TARGET;
2382 	else
2383 		phba->cfg_oas_flags &= ~OAS_FIND_ANY_TARGET;
2384 	phba->cfg_oas_flags &= ~OAS_LUN_VALID;
2385 	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
2386 	return count;
2387 }
2388 static DEVICE_ATTR(lpfc_xlane_tgt, S_IRUGO | S_IWUSR,
2389 		   lpfc_oas_tgt_show, lpfc_oas_tgt_store);
2390 
2391 /**
2392  * lpfc_oas_vpt_show - Return wwpn of vport whose targets maybe enabled
2393  *		      for Optimized Access Storage (OAS) operations.
2394  * @dev: class device that is converted into a Scsi_host.
2395  * @attr: device attribute, not used.
2396  * @buf: buffer for passing information.
2397  *
2398  * Returns:
2399  * value of count on success
2400  **/
2401 static ssize_t
2402 lpfc_oas_vpt_show(struct device *dev, struct device_attribute *attr,
2403 		  char *buf)
2404 {
2405 	struct Scsi_Host *shost = class_to_shost(dev);
2406 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2407 
2408 	return snprintf(buf, PAGE_SIZE, "0x%llx\n",
2409 			wwn_to_u64(phba->cfg_oas_vpt_wwpn));
2410 }
2411 
2412 /**
2413  * lpfc_oas_vpt_store - Store wwpn of vport whose targets maybe enabled
2414  *		      for Optimized Access Storage (OAS) operations.
2415  * @dev: class device that is converted into a Scsi_host.
2416  * @attr: device attribute, not used.
2417  * @buf: buffer for passing information.
2418  * @count: Size of the data buffer.
2419  *
2420  * Returns:
2421  * -EINVAL count is invalid, invalid wwpn byte invalid
2422  * -EPERM oas is not supported by hba
2423  * value of count on success
2424  **/
2425 static ssize_t
2426 lpfc_oas_vpt_store(struct device *dev, struct device_attribute *attr,
2427 		   const char *buf, size_t count)
2428 {
2429 	struct Scsi_Host *shost = class_to_shost(dev);
2430 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2431 	unsigned int cnt = count;
2432 	uint8_t wwpn[WWN_SZ];
2433 	int rc;
2434 
2435 	if (!phba->cfg_EnableXLane)
2436 		return -EPERM;
2437 
2438 	/* count may include a LF at end of string */
2439 	if (buf[cnt-1] == '\n')
2440 		cnt--;
2441 
2442 	rc = lpfc_wwn_set(buf, cnt, wwpn);
2443 	if (rc)
2444 		return rc;
2445 
2446 	memcpy(phba->cfg_oas_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2447 	memcpy(phba->sli4_hba.oas_next_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2448 	if (wwn_to_u64(wwpn) == 0)
2449 		phba->cfg_oas_flags |= OAS_FIND_ANY_VPORT;
2450 	else
2451 		phba->cfg_oas_flags &= ~OAS_FIND_ANY_VPORT;
2452 	phba->cfg_oas_flags &= ~OAS_LUN_VALID;
2453 	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
2454 	return count;
2455 }
2456 static DEVICE_ATTR(lpfc_xlane_vpt, S_IRUGO | S_IWUSR,
2457 		   lpfc_oas_vpt_show, lpfc_oas_vpt_store);
2458 
2459 /**
2460  * lpfc_oas_lun_state_show - Return the current state (enabled or disabled)
2461  *			    of whether luns will be enabled or disabled
2462  *			    for Optimized Access Storage (OAS) operations.
2463  * @dev: class device that is converted into a Scsi_host.
2464  * @attr: device attribute, not used.
2465  * @buf: buffer for passing information.
2466  *
2467  * Returns:
2468  * size of formatted string.
2469  **/
2470 static ssize_t
2471 lpfc_oas_lun_state_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 
2477 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_state);
2478 }
2479 
2480 /**
2481  * lpfc_oas_lun_state_store - Store the state (enabled or disabled)
2482  *			    of whether luns will be enabled or disabled
2483  *			    for Optimized Access Storage (OAS) operations.
2484  * @dev: class device that is converted into a Scsi_host.
2485  * @attr: device attribute, not used.
2486  * @buf: buffer for passing information.
2487  * @count: Size of the data buffer.
2488  *
2489  * Returns:
2490  * -EINVAL count is invalid, invalid wwpn byte invalid
2491  * -EPERM oas is not supported by hba
2492  * value of count on success
2493  **/
2494 static ssize_t
2495 lpfc_oas_lun_state_store(struct device *dev, struct device_attribute *attr,
2496 			 const char *buf, size_t count)
2497 {
2498 	struct Scsi_Host *shost = class_to_shost(dev);
2499 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2500 	int val = 0;
2501 
2502 	if (!phba->cfg_EnableXLane)
2503 		return -EPERM;
2504 
2505 	if (!isdigit(buf[0]))
2506 		return -EINVAL;
2507 
2508 	if (sscanf(buf, "%i", &val) != 1)
2509 		return -EINVAL;
2510 
2511 	if ((val != 0) && (val != 1))
2512 		return -EINVAL;
2513 
2514 	phba->cfg_oas_lun_state = val;
2515 
2516 	return strlen(buf);
2517 }
2518 static DEVICE_ATTR(lpfc_xlane_lun_state, S_IRUGO | S_IWUSR,
2519 		   lpfc_oas_lun_state_show, lpfc_oas_lun_state_store);
2520 
2521 /**
2522  * lpfc_oas_lun_status_show - Return the status of the Optimized Access
2523  *                          Storage (OAS) lun returned by the
2524  *                          lpfc_oas_lun_show function.
2525  * @dev: class device that is converted into a Scsi_host.
2526  * @attr: device attribute, not used.
2527  * @buf: buffer for passing information.
2528  *
2529  * Returns:
2530  * size of formatted string.
2531  **/
2532 static ssize_t
2533 lpfc_oas_lun_status_show(struct device *dev, struct device_attribute *attr,
2534 			 char *buf)
2535 {
2536 	struct Scsi_Host *shost = class_to_shost(dev);
2537 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2538 
2539 	if (!(phba->cfg_oas_flags & OAS_LUN_VALID))
2540 		return -EFAULT;
2541 
2542 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_status);
2543 }
2544 static DEVICE_ATTR(lpfc_xlane_lun_status, S_IRUGO,
2545 		   lpfc_oas_lun_status_show, NULL);
2546 
2547 
2548 /**
2549  * lpfc_oas_lun_state_set - enable or disable a lun for Optimized Access Storage
2550  *			   (OAS) operations.
2551  * @phba: lpfc_hba pointer.
2552  * @ndlp: pointer to fcp target node.
2553  * @lun: the fc lun for setting oas state.
2554  * @oas_state: the oas state to be set to the lun.
2555  *
2556  * Returns:
2557  * SUCCESS : 0
2558  * -EPERM OAS is not enabled or not supported by this port.
2559  *
2560  */
2561 static size_t
2562 lpfc_oas_lun_state_set(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
2563 		       uint8_t tgt_wwpn[], uint64_t lun, uint32_t oas_state)
2564 {
2565 
2566 	int rc = 0;
2567 
2568 	if (!phba->cfg_EnableXLane)
2569 		return -EPERM;
2570 
2571 	if (oas_state) {
2572 		if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
2573 					 (struct lpfc_name *)tgt_wwpn, lun))
2574 			rc = -ENOMEM;
2575 	} else {
2576 		lpfc_disable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
2577 				     (struct lpfc_name *)tgt_wwpn, lun);
2578 	}
2579 	return rc;
2580 
2581 }
2582 
2583 /**
2584  * lpfc_oas_lun_get_next - get the next lun that has been enabled for Optimized
2585  *			  Access Storage (OAS) operations.
2586  * @phba: lpfc_hba pointer.
2587  * @vpt_wwpn: wwpn of the vport associated with the returned lun
2588  * @tgt_wwpn: wwpn of the target associated with the returned lun
2589  * @lun_status: status of the lun returned lun
2590  *
2591  * Returns the first or next lun enabled for OAS operations for the vport/target
2592  * specified.  If a lun is found, its vport wwpn, target wwpn and status is
2593  * returned.  If the lun is not found, NOT_OAS_ENABLED_LUN is returned.
2594  *
2595  * Return:
2596  * lun that is OAS enabled for the vport/target
2597  * NOT_OAS_ENABLED_LUN when no oas enabled lun found.
2598  */
2599 static uint64_t
2600 lpfc_oas_lun_get_next(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
2601 		      uint8_t tgt_wwpn[], uint32_t *lun_status)
2602 {
2603 	uint64_t found_lun;
2604 
2605 	if (unlikely(!phba) || !vpt_wwpn || !tgt_wwpn)
2606 		return NOT_OAS_ENABLED_LUN;
2607 	if (lpfc_find_next_oas_lun(phba, (struct lpfc_name *)
2608 				   phba->sli4_hba.oas_next_vpt_wwpn,
2609 				   (struct lpfc_name *)
2610 				   phba->sli4_hba.oas_next_tgt_wwpn,
2611 				   &phba->sli4_hba.oas_next_lun,
2612 				   (struct lpfc_name *)vpt_wwpn,
2613 				   (struct lpfc_name *)tgt_wwpn,
2614 				   &found_lun, lun_status))
2615 		return found_lun;
2616 	else
2617 		return NOT_OAS_ENABLED_LUN;
2618 }
2619 
2620 /**
2621  * lpfc_oas_lun_state_change - enable/disable a lun for OAS operations
2622  * @phba: lpfc_hba pointer.
2623  * @vpt_wwpn: vport wwpn by reference.
2624  * @tgt_wwpn: target wwpn by reference.
2625  * @lun: the fc lun for setting oas state.
2626  * @oas_state: the oas state to be set to the oas_lun.
2627  *
2628  * This routine enables (OAS_LUN_ENABLE) or disables (OAS_LUN_DISABLE)
2629  * a lun for OAS operations.
2630  *
2631  * Return:
2632  * SUCCESS: 0
2633  * -ENOMEM: failed to enable an lun for OAS operations
2634  * -EPERM: OAS is not enabled
2635  */
2636 static ssize_t
2637 lpfc_oas_lun_state_change(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
2638 			  uint8_t tgt_wwpn[], uint64_t lun,
2639 			  uint32_t oas_state)
2640 {
2641 
2642 	int rc;
2643 
2644 	rc = lpfc_oas_lun_state_set(phba, vpt_wwpn, tgt_wwpn, lun,
2645 					oas_state);
2646 	return rc;
2647 }
2648 
2649 /**
2650  * lpfc_oas_lun_show - Return oas enabled luns from a chosen target
2651  * @dev: class device that is converted into a Scsi_host.
2652  * @attr: device attribute, not used.
2653  * @buf: buffer for passing information.
2654  *
2655  * This routine returns a lun enabled for OAS each time the function
2656  * is called.
2657  *
2658  * Returns:
2659  * SUCCESS: size of formatted string.
2660  * -EFAULT: target or vport wwpn was not set properly.
2661  * -EPERM: oas is not enabled.
2662  **/
2663 static ssize_t
2664 lpfc_oas_lun_show(struct device *dev, struct device_attribute *attr,
2665 		  char *buf)
2666 {
2667 	struct Scsi_Host *shost = class_to_shost(dev);
2668 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2669 
2670 	uint64_t oas_lun;
2671 	int len = 0;
2672 
2673 	if (!phba->cfg_EnableXLane)
2674 		return -EPERM;
2675 
2676 	if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
2677 		if (!(phba->cfg_oas_flags & OAS_FIND_ANY_VPORT))
2678 			return -EFAULT;
2679 
2680 	if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
2681 		if (!(phba->cfg_oas_flags & OAS_FIND_ANY_TARGET))
2682 			return -EFAULT;
2683 
2684 	oas_lun = lpfc_oas_lun_get_next(phba, phba->cfg_oas_vpt_wwpn,
2685 					phba->cfg_oas_tgt_wwpn,
2686 					&phba->cfg_oas_lun_status);
2687 	if (oas_lun != NOT_OAS_ENABLED_LUN)
2688 		phba->cfg_oas_flags |= OAS_LUN_VALID;
2689 
2690 	len += snprintf(buf + len, PAGE_SIZE-len, "0x%llx", oas_lun);
2691 
2692 	return len;
2693 }
2694 
2695 /**
2696  * lpfc_oas_lun_store - Sets the OAS state for lun
2697  * @dev: class device that is converted into a Scsi_host.
2698  * @attr: device attribute, not used.
2699  * @buf: buffer for passing information.
2700  *
2701  * This function sets the OAS state for lun.  Before this function is called,
2702  * the vport wwpn, target wwpn, and oas state need to be set.
2703  *
2704  * Returns:
2705  * SUCCESS: size of formatted string.
2706  * -EFAULT: target or vport wwpn was not set properly.
2707  * -EPERM: oas is not enabled.
2708  * size of formatted string.
2709  **/
2710 static ssize_t
2711 lpfc_oas_lun_store(struct device *dev, struct device_attribute *attr,
2712 		   const char *buf, size_t count)
2713 {
2714 	struct Scsi_Host *shost = class_to_shost(dev);
2715 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2716 	uint64_t scsi_lun;
2717 	ssize_t rc;
2718 
2719 	if (!phba->cfg_EnableXLane)
2720 		return -EPERM;
2721 
2722 	if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
2723 		return -EFAULT;
2724 
2725 	if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
2726 		return -EFAULT;
2727 
2728 	if (!isdigit(buf[0]))
2729 		return -EINVAL;
2730 
2731 	if (sscanf(buf, "0x%llx", &scsi_lun) != 1)
2732 		return -EINVAL;
2733 
2734 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2735 			"3372 Try to set vport 0x%llx target 0x%llx lun:%lld "
2736 			"with oas set to %d\n",
2737 			wwn_to_u64(phba->cfg_oas_vpt_wwpn),
2738 			wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun,
2739 			phba->cfg_oas_lun_state);
2740 
2741 	rc = lpfc_oas_lun_state_change(phba, phba->cfg_oas_vpt_wwpn,
2742 					   phba->cfg_oas_tgt_wwpn, scsi_lun,
2743 					   phba->cfg_oas_lun_state);
2744 
2745 	if (rc)
2746 		return rc;
2747 
2748 	return count;
2749 }
2750 static DEVICE_ATTR(lpfc_xlane_lun, S_IRUGO | S_IWUSR,
2751 		   lpfc_oas_lun_show, lpfc_oas_lun_store);
2752 
2753 static int lpfc_poll = 0;
2754 module_param(lpfc_poll, int, S_IRUGO);
2755 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
2756 		 " 0 - none,"
2757 		 " 1 - poll with interrupts enabled"
2758 		 " 3 - poll and disable FCP ring interrupts");
2759 
2760 static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
2761 		   lpfc_poll_show, lpfc_poll_store);
2762 
2763 int  lpfc_sli_mode = 0;
2764 module_param(lpfc_sli_mode, int, S_IRUGO);
2765 MODULE_PARM_DESC(lpfc_sli_mode, "SLI mode selector:"
2766 		 " 0 - auto (SLI-3 if supported),"
2767 		 " 2 - select SLI-2 even on SLI-3 capable HBAs,"
2768 		 " 3 - select SLI-3");
2769 
2770 int lpfc_enable_npiv = 1;
2771 module_param(lpfc_enable_npiv, int, S_IRUGO);
2772 MODULE_PARM_DESC(lpfc_enable_npiv, "Enable NPIV functionality");
2773 lpfc_param_show(enable_npiv);
2774 lpfc_param_init(enable_npiv, 1, 0, 1);
2775 static DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO, lpfc_enable_npiv_show, NULL);
2776 
2777 LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2,
2778 	"FCF Fast failover=1 Priority failover=2");
2779 
2780 int lpfc_enable_rrq = 2;
2781 module_param(lpfc_enable_rrq, int, S_IRUGO);
2782 MODULE_PARM_DESC(lpfc_enable_rrq, "Enable RRQ functionality");
2783 lpfc_param_show(enable_rrq);
2784 /*
2785 # lpfc_enable_rrq: Track XRI/OXID reuse after IO failures
2786 #	0x0 = disabled, XRI/OXID use not tracked.
2787 #	0x1 = XRI/OXID reuse is timed with ratov, RRQ sent.
2788 #	0x2 = XRI/OXID reuse is timed with ratov, No RRQ sent.
2789 */
2790 lpfc_param_init(enable_rrq, 2, 0, 2);
2791 static DEVICE_ATTR(lpfc_enable_rrq, S_IRUGO, lpfc_enable_rrq_show, NULL);
2792 
2793 /*
2794 # lpfc_suppress_link_up:  Bring link up at initialization
2795 #            0x0  = bring link up (issue MBX_INIT_LINK)
2796 #            0x1  = do NOT bring link up at initialization(MBX_INIT_LINK)
2797 #            0x2  = never bring up link
2798 # Default value is 0.
2799 */
2800 LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK,
2801 		LPFC_DELAY_INIT_LINK_INDEFINITELY,
2802 		"Suppress Link Up at initialization");
2803 /*
2804 # lpfc_cnt: Number of IOCBs allocated for ELS, CT, and ABTS
2805 #       1 - (1024)
2806 #       2 - (2048)
2807 #       3 - (3072)
2808 #       4 - (4096)
2809 #       5 - (5120)
2810 */
2811 static ssize_t
2812 lpfc_iocb_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
2813 {
2814 	struct Scsi_Host  *shost = class_to_shost(dev);
2815 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
2816 
2817 	return snprintf(buf, PAGE_SIZE, "%d\n", phba->iocb_max);
2818 }
2819 
2820 static DEVICE_ATTR(iocb_hw, S_IRUGO,
2821 			 lpfc_iocb_hw_show, NULL);
2822 static ssize_t
2823 lpfc_txq_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
2824 {
2825 	struct Scsi_Host  *shost = class_to_shost(dev);
2826 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
2827 
2828 	return snprintf(buf, PAGE_SIZE, "%d\n",
2829 		phba->sli.ring[LPFC_ELS_RING].txq_max);
2830 }
2831 
2832 static DEVICE_ATTR(txq_hw, S_IRUGO,
2833 			 lpfc_txq_hw_show, NULL);
2834 static ssize_t
2835 lpfc_txcmplq_hw_show(struct device *dev, struct device_attribute *attr,
2836  char *buf)
2837 {
2838 	struct Scsi_Host  *shost = class_to_shost(dev);
2839 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
2840 
2841 	return snprintf(buf, PAGE_SIZE, "%d\n",
2842 		phba->sli.ring[LPFC_ELS_RING].txcmplq_max);
2843 }
2844 
2845 static DEVICE_ATTR(txcmplq_hw, S_IRUGO,
2846 			 lpfc_txcmplq_hw_show, NULL);
2847 
2848 int lpfc_iocb_cnt = 2;
2849 module_param(lpfc_iocb_cnt, int, S_IRUGO);
2850 MODULE_PARM_DESC(lpfc_iocb_cnt,
2851 	"Number of IOCBs alloc for ELS, CT, and ABTS: 1k to 5k IOCBs");
2852 lpfc_param_show(iocb_cnt);
2853 lpfc_param_init(iocb_cnt, 2, 1, 5);
2854 static DEVICE_ATTR(lpfc_iocb_cnt, S_IRUGO,
2855 			 lpfc_iocb_cnt_show, NULL);
2856 
2857 /*
2858 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
2859 # until the timer expires. Value range is [0,255]. Default value is 30.
2860 */
2861 static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
2862 static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO;
2863 module_param(lpfc_nodev_tmo, int, 0);
2864 MODULE_PARM_DESC(lpfc_nodev_tmo,
2865 		 "Seconds driver will hold I/O waiting "
2866 		 "for a device to come back");
2867 
2868 /**
2869  * lpfc_nodev_tmo_show - Return the hba dev loss timeout value
2870  * @dev: class converted to a Scsi_host structure.
2871  * @attr: device attribute, not used.
2872  * @buf: on return contains the dev loss timeout in decimal.
2873  *
2874  * Returns: size of formatted string.
2875  **/
2876 static ssize_t
2877 lpfc_nodev_tmo_show(struct device *dev, struct device_attribute *attr,
2878 		    char *buf)
2879 {
2880 	struct Scsi_Host  *shost = class_to_shost(dev);
2881 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2882 
2883 	return snprintf(buf, PAGE_SIZE, "%d\n",	vport->cfg_devloss_tmo);
2884 }
2885 
2886 /**
2887  * lpfc_nodev_tmo_init - Set the hba nodev timeout value
2888  * @vport: lpfc vport structure pointer.
2889  * @val: contains the nodev timeout value.
2890  *
2891  * Description:
2892  * If the devloss tmo is already set then nodev tmo is set to devloss tmo,
2893  * a kernel error message is printed and zero is returned.
2894  * Else if val is in range then nodev tmo and devloss tmo are set to val.
2895  * Otherwise nodev tmo is set to the default value.
2896  *
2897  * Returns:
2898  * zero if already set or if val is in range
2899  * -EINVAL val out of range
2900  **/
2901 static int
2902 lpfc_nodev_tmo_init(struct lpfc_vport *vport, int val)
2903 {
2904 	if (vport->cfg_devloss_tmo != LPFC_DEF_DEVLOSS_TMO) {
2905 		vport->cfg_nodev_tmo = vport->cfg_devloss_tmo;
2906 		if (val != LPFC_DEF_DEVLOSS_TMO)
2907 			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2908 					 "0407 Ignoring nodev_tmo module "
2909 					 "parameter because devloss_tmo is "
2910 					 "set.\n");
2911 		return 0;
2912 	}
2913 
2914 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
2915 		vport->cfg_nodev_tmo = val;
2916 		vport->cfg_devloss_tmo = val;
2917 		return 0;
2918 	}
2919 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2920 			 "0400 lpfc_nodev_tmo attribute cannot be set to"
2921 			 " %d, allowed range is [%d, %d]\n",
2922 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
2923 	vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
2924 	return -EINVAL;
2925 }
2926 
2927 /**
2928  * lpfc_update_rport_devloss_tmo - Update dev loss tmo value
2929  * @vport: lpfc vport structure pointer.
2930  *
2931  * Description:
2932  * Update all the ndlp's dev loss tmo with the vport devloss tmo value.
2933  **/
2934 static void
2935 lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport)
2936 {
2937 	struct Scsi_Host  *shost;
2938 	struct lpfc_nodelist  *ndlp;
2939 
2940 	shost = lpfc_shost_from_vport(vport);
2941 	spin_lock_irq(shost->host_lock);
2942 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp)
2943 		if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport)
2944 			ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo;
2945 	spin_unlock_irq(shost->host_lock);
2946 }
2947 
2948 /**
2949  * lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values
2950  * @vport: lpfc vport structure pointer.
2951  * @val: contains the tmo value.
2952  *
2953  * Description:
2954  * If the devloss tmo is already set or the vport dev loss tmo has changed
2955  * then a kernel error message is printed and zero is returned.
2956  * Else if val is in range then nodev tmo and devloss tmo are set to val.
2957  * Otherwise nodev tmo is set to the default value.
2958  *
2959  * Returns:
2960  * zero if already set or if val is in range
2961  * -EINVAL val out of range
2962  **/
2963 static int
2964 lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val)
2965 {
2966 	if (vport->dev_loss_tmo_changed ||
2967 	    (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
2968 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2969 				 "0401 Ignoring change to nodev_tmo "
2970 				 "because devloss_tmo is set.\n");
2971 		return 0;
2972 	}
2973 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
2974 		vport->cfg_nodev_tmo = val;
2975 		vport->cfg_devloss_tmo = val;
2976 		/*
2977 		 * For compat: set the fc_host dev loss so new rports
2978 		 * will get the value.
2979 		 */
2980 		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
2981 		lpfc_update_rport_devloss_tmo(vport);
2982 		return 0;
2983 	}
2984 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2985 			 "0403 lpfc_nodev_tmo attribute cannot be set to"
2986 			 "%d, allowed range is [%d, %d]\n",
2987 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
2988 	return -EINVAL;
2989 }
2990 
2991 lpfc_vport_param_store(nodev_tmo)
2992 
2993 static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
2994 		   lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
2995 
2996 /*
2997 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
2998 # disappear until the timer expires. Value range is [0,255]. Default
2999 # value is 30.
3000 */
3001 module_param(lpfc_devloss_tmo, int, S_IRUGO);
3002 MODULE_PARM_DESC(lpfc_devloss_tmo,
3003 		 "Seconds driver will hold I/O waiting "
3004 		 "for a device to come back");
3005 lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
3006 		      LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
3007 lpfc_vport_param_show(devloss_tmo)
3008 
3009 /**
3010  * lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit
3011  * @vport: lpfc vport structure pointer.
3012  * @val: contains the tmo value.
3013  *
3014  * Description:
3015  * If val is in a valid range then set the vport nodev tmo,
3016  * devloss tmo, also set the vport dev loss tmo changed flag.
3017  * Else a kernel error message is printed.
3018  *
3019  * Returns:
3020  * zero if val is in range
3021  * -EINVAL val out of range
3022  **/
3023 static int
3024 lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val)
3025 {
3026 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3027 		vport->cfg_nodev_tmo = val;
3028 		vport->cfg_devloss_tmo = val;
3029 		vport->dev_loss_tmo_changed = 1;
3030 		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3031 		lpfc_update_rport_devloss_tmo(vport);
3032 		return 0;
3033 	}
3034 
3035 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3036 			 "0404 lpfc_devloss_tmo attribute cannot be set to"
3037 			 " %d, allowed range is [%d, %d]\n",
3038 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3039 	return -EINVAL;
3040 }
3041 
3042 lpfc_vport_param_store(devloss_tmo)
3043 static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
3044 		   lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
3045 
3046 /*
3047 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being
3048 # deluged with LOTS of information.
3049 # You can set a bit mask to record specific types of verbose messages:
3050 # See lpfc_logmsh.h for definitions.
3051 */
3052 LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff,
3053 		       "Verbose logging bit-mask");
3054 
3055 /*
3056 # lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters
3057 # objects that have been registered with the nameserver after login.
3058 */
3059 LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,
3060 		  "Deregister nameserver objects before LOGO");
3061 
3062 /*
3063 # lun_queue_depth:  This parameter is used to limit the number of outstanding
3064 # commands per FCP LUN. Value range is [1,512]. Default value is 30.
3065 # If this parameter value is greater than 1/8th the maximum number of exchanges
3066 # supported by the HBA port, then the lun queue depth will be reduced to
3067 # 1/8th the maximum number of exchanges.
3068 */
3069 LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512,
3070 		  "Max number of FCP commands we can queue to a specific LUN");
3071 
3072 /*
3073 # tgt_queue_depth:  This parameter is used to limit the number of outstanding
3074 # commands per target port. Value range is [10,65535]. Default value is 65535.
3075 */
3076 LPFC_VPORT_ATTR_R(tgt_queue_depth, 65535, 10, 65535,
3077 		  "Max number of FCP commands we can queue to a specific target port");
3078 
3079 /*
3080 # hba_queue_depth:  This parameter is used to limit the number of outstanding
3081 # commands per lpfc HBA. Value range is [32,8192]. If this parameter
3082 # value is greater than the maximum number of exchanges supported by the HBA,
3083 # then maximum number of exchanges supported by the HBA is used to determine
3084 # the hba_queue_depth.
3085 */
3086 LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192,
3087 	    "Max number of FCP commands we can queue to a lpfc HBA");
3088 
3089 /*
3090 # peer_port_login:  This parameter allows/prevents logins
3091 # between peer ports hosted on the same physical port.
3092 # When this parameter is set 0 peer ports of same physical port
3093 # are not allowed to login to each other.
3094 # When this parameter is set 1 peer ports of same physical port
3095 # are allowed to login to each other.
3096 # Default value of this parameter is 0.
3097 */
3098 LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1,
3099 		  "Allow peer ports on the same physical port to login to each "
3100 		  "other.");
3101 
3102 /*
3103 # restrict_login:  This parameter allows/prevents logins
3104 # between Virtual Ports and remote initiators.
3105 # When this parameter is not set (0) Virtual Ports will accept PLOGIs from
3106 # other initiators and will attempt to PLOGI all remote ports.
3107 # When this parameter is set (1) Virtual Ports will reject PLOGIs from
3108 # remote ports and will not attempt to PLOGI to other initiators.
3109 # This parameter does not restrict to the physical port.
3110 # This parameter does not restrict logins to Fabric resident remote ports.
3111 # Default value of this parameter is 1.
3112 */
3113 static int lpfc_restrict_login = 1;
3114 module_param(lpfc_restrict_login, int, S_IRUGO);
3115 MODULE_PARM_DESC(lpfc_restrict_login,
3116 		 "Restrict virtual ports login to remote initiators.");
3117 lpfc_vport_param_show(restrict_login);
3118 
3119 /**
3120  * lpfc_restrict_login_init - Set the vport restrict login flag
3121  * @vport: lpfc vport structure pointer.
3122  * @val: contains the restrict login value.
3123  *
3124  * Description:
3125  * If val is not in a valid range then log a kernel error message and set
3126  * the vport restrict login to one.
3127  * If the port type is physical clear the restrict login flag and return.
3128  * Else set the restrict login flag to val.
3129  *
3130  * Returns:
3131  * zero if val is in range
3132  * -EINVAL val out of range
3133  **/
3134 static int
3135 lpfc_restrict_login_init(struct lpfc_vport *vport, int val)
3136 {
3137 	if (val < 0 || val > 1) {
3138 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3139 				 "0422 lpfc_restrict_login attribute cannot "
3140 				 "be set to %d, allowed range is [0, 1]\n",
3141 				 val);
3142 		vport->cfg_restrict_login = 1;
3143 		return -EINVAL;
3144 	}
3145 	if (vport->port_type == LPFC_PHYSICAL_PORT) {
3146 		vport->cfg_restrict_login = 0;
3147 		return 0;
3148 	}
3149 	vport->cfg_restrict_login = val;
3150 	return 0;
3151 }
3152 
3153 /**
3154  * lpfc_restrict_login_set - Set the vport restrict login flag
3155  * @vport: lpfc vport structure pointer.
3156  * @val: contains the restrict login value.
3157  *
3158  * Description:
3159  * If val is not in a valid range then log a kernel error message and set
3160  * the vport restrict login to one.
3161  * If the port type is physical and the val is not zero log a kernel
3162  * error message, clear the restrict login flag and return zero.
3163  * Else set the restrict login flag to val.
3164  *
3165  * Returns:
3166  * zero if val is in range
3167  * -EINVAL val out of range
3168  **/
3169 static int
3170 lpfc_restrict_login_set(struct lpfc_vport *vport, int val)
3171 {
3172 	if (val < 0 || val > 1) {
3173 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3174 				 "0425 lpfc_restrict_login attribute cannot "
3175 				 "be set to %d, allowed range is [0, 1]\n",
3176 				 val);
3177 		vport->cfg_restrict_login = 1;
3178 		return -EINVAL;
3179 	}
3180 	if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) {
3181 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3182 				 "0468 lpfc_restrict_login must be 0 for "
3183 				 "Physical ports.\n");
3184 		vport->cfg_restrict_login = 0;
3185 		return 0;
3186 	}
3187 	vport->cfg_restrict_login = val;
3188 	return 0;
3189 }
3190 lpfc_vport_param_store(restrict_login);
3191 static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR,
3192 		   lpfc_restrict_login_show, lpfc_restrict_login_store);
3193 
3194 /*
3195 # Some disk devices have a "select ID" or "select Target" capability.
3196 # From a protocol standpoint "select ID" usually means select the
3197 # Fibre channel "ALPA".  In the FC-AL Profile there is an "informative
3198 # annex" which contains a table that maps a "select ID" (a number
3199 # between 0 and 7F) to an ALPA.  By default, for compatibility with
3200 # older drivers, the lpfc driver scans this table from low ALPA to high
3201 # ALPA.
3202 #
3203 # Turning on the scan-down variable (on  = 1, off = 0) will
3204 # cause the lpfc driver to use an inverted table, effectively
3205 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
3206 #
3207 # (Note: This "select ID" functionality is a LOOP ONLY characteristic
3208 # and will not work across a fabric. Also this parameter will take
3209 # effect only in the case when ALPA map is not available.)
3210 */
3211 LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1,
3212 		  "Start scanning for devices from highest ALPA to lowest");
3213 
3214 /*
3215 # lpfc_topology:  link topology for init link
3216 #            0x0  = attempt loop mode then point-to-point
3217 #            0x01 = internal loopback mode
3218 #            0x02 = attempt point-to-point mode only
3219 #            0x04 = attempt loop mode only
3220 #            0x06 = attempt point-to-point mode then loop
3221 # Set point-to-point mode if you want to run as an N_Port.
3222 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
3223 # Default value is 0.
3224 */
3225 
3226 /**
3227  * lpfc_topology_set - Set the adapters topology field
3228  * @phba: lpfc_hba pointer.
3229  * @val: topology value.
3230  *
3231  * Description:
3232  * If val is in a valid range then set the adapter's topology field and
3233  * issue a lip; if the lip fails reset the topology to the old value.
3234  *
3235  * If the value is not in range log a kernel error message and return an error.
3236  *
3237  * Returns:
3238  * zero if val is in range and lip okay
3239  * non-zero return value from lpfc_issue_lip()
3240  * -EINVAL val out of range
3241  **/
3242 static ssize_t
3243 lpfc_topology_store(struct device *dev, struct device_attribute *attr,
3244 			const char *buf, size_t count)
3245 {
3246 	struct Scsi_Host  *shost = class_to_shost(dev);
3247 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3248 	struct lpfc_hba   *phba = vport->phba;
3249 	int val = 0;
3250 	int nolip = 0;
3251 	const char *val_buf = buf;
3252 	int err;
3253 	uint32_t prev_val;
3254 
3255 	if (!strncmp(buf, "nolip ", strlen("nolip "))) {
3256 		nolip = 1;
3257 		val_buf = &buf[strlen("nolip ")];
3258 	}
3259 
3260 	if (!isdigit(val_buf[0]))
3261 		return -EINVAL;
3262 	if (sscanf(val_buf, "%i", &val) != 1)
3263 		return -EINVAL;
3264 
3265 	if (val >= 0 && val <= 6) {
3266 		prev_val = phba->cfg_topology;
3267 		phba->cfg_topology = val;
3268 		if (phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G &&
3269 			val == 4) {
3270 			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3271 				"3113 Loop mode not supported at speed %d\n",
3272 				phba->cfg_link_speed);
3273 			phba->cfg_topology = prev_val;
3274 			return -EINVAL;
3275 		}
3276 		if (nolip)
3277 			return strlen(buf);
3278 
3279 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3280 			"3054 lpfc_topology changed from %d to %d\n",
3281 			prev_val, val);
3282 		if (prev_val != val && phba->sli_rev == LPFC_SLI_REV4)
3283 			phba->fc_topology_changed = 1;
3284 		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
3285 		if (err) {
3286 			phba->cfg_topology = prev_val;
3287 			return -EINVAL;
3288 		} else
3289 			return strlen(buf);
3290 	}
3291 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3292 		"%d:0467 lpfc_topology attribute cannot be set to %d, "
3293 		"allowed range is [0, 6]\n",
3294 		phba->brd_no, val);
3295 	return -EINVAL;
3296 }
3297 static int lpfc_topology = 0;
3298 module_param(lpfc_topology, int, S_IRUGO);
3299 MODULE_PARM_DESC(lpfc_topology, "Select Fibre Channel topology");
3300 lpfc_param_show(topology)
3301 lpfc_param_init(topology, 0, 0, 6)
3302 static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR,
3303 		lpfc_topology_show, lpfc_topology_store);
3304 
3305 /**
3306  * lpfc_static_vport_show: Read callback function for
3307  *   lpfc_static_vport sysfs file.
3308  * @dev: Pointer to class device object.
3309  * @attr: device attribute structure.
3310  * @buf: Data buffer.
3311  *
3312  * This function is the read call back function for
3313  * lpfc_static_vport sysfs file. The lpfc_static_vport
3314  * sysfs file report the mageability of the vport.
3315  **/
3316 static ssize_t
3317 lpfc_static_vport_show(struct device *dev, struct device_attribute *attr,
3318 			 char *buf)
3319 {
3320 	struct Scsi_Host  *shost = class_to_shost(dev);
3321 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3322 	if (vport->vport_flag & STATIC_VPORT)
3323 		sprintf(buf, "1\n");
3324 	else
3325 		sprintf(buf, "0\n");
3326 
3327 	return strlen(buf);
3328 }
3329 
3330 /*
3331  * Sysfs attribute to control the statistical data collection.
3332  */
3333 static DEVICE_ATTR(lpfc_static_vport, S_IRUGO,
3334 		   lpfc_static_vport_show, NULL);
3335 
3336 /**
3337  * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
3338  * @dev: Pointer to class device.
3339  * @buf: Data buffer.
3340  * @count: Size of the data buffer.
3341  *
3342  * This function get called when an user write to the lpfc_stat_data_ctrl
3343  * sysfs file. This function parse the command written to the sysfs file
3344  * and take appropriate action. These commands are used for controlling
3345  * driver statistical data collection.
3346  * Following are the command this function handles.
3347  *
3348  *    setbucket <bucket_type> <base> <step>
3349  *			       = Set the latency buckets.
3350  *    destroybucket            = destroy all the buckets.
3351  *    start                    = start data collection
3352  *    stop                     = stop data collection
3353  *    reset                    = reset the collected data
3354  **/
3355 static ssize_t
3356 lpfc_stat_data_ctrl_store(struct device *dev, struct device_attribute *attr,
3357 			  const char *buf, size_t count)
3358 {
3359 	struct Scsi_Host  *shost = class_to_shost(dev);
3360 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3361 	struct lpfc_hba   *phba = vport->phba;
3362 #define LPFC_MAX_DATA_CTRL_LEN 1024
3363 	static char bucket_data[LPFC_MAX_DATA_CTRL_LEN];
3364 	unsigned long i;
3365 	char *str_ptr, *token;
3366 	struct lpfc_vport **vports;
3367 	struct Scsi_Host *v_shost;
3368 	char *bucket_type_str, *base_str, *step_str;
3369 	unsigned long base, step, bucket_type;
3370 
3371 	if (!strncmp(buf, "setbucket", strlen("setbucket"))) {
3372 		if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1))
3373 			return -EINVAL;
3374 
3375 		strcpy(bucket_data, buf);
3376 		str_ptr = &bucket_data[0];
3377 		/* Ignore this token - this is command token */
3378 		token = strsep(&str_ptr, "\t ");
3379 		if (!token)
3380 			return -EINVAL;
3381 
3382 		bucket_type_str = strsep(&str_ptr, "\t ");
3383 		if (!bucket_type_str)
3384 			return -EINVAL;
3385 
3386 		if (!strncmp(bucket_type_str, "linear", strlen("linear")))
3387 			bucket_type = LPFC_LINEAR_BUCKET;
3388 		else if (!strncmp(bucket_type_str, "power2", strlen("power2")))
3389 			bucket_type = LPFC_POWER2_BUCKET;
3390 		else
3391 			return -EINVAL;
3392 
3393 		base_str = strsep(&str_ptr, "\t ");
3394 		if (!base_str)
3395 			return -EINVAL;
3396 		base = simple_strtoul(base_str, NULL, 0);
3397 
3398 		step_str = strsep(&str_ptr, "\t ");
3399 		if (!step_str)
3400 			return -EINVAL;
3401 		step = simple_strtoul(step_str, NULL, 0);
3402 		if (!step)
3403 			return -EINVAL;
3404 
3405 		/* Block the data collection for every vport */
3406 		vports = lpfc_create_vport_work_array(phba);
3407 		if (vports == NULL)
3408 			return -ENOMEM;
3409 
3410 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3411 			v_shost = lpfc_shost_from_vport(vports[i]);
3412 			spin_lock_irq(v_shost->host_lock);
3413 			/* Block and reset data collection */
3414 			vports[i]->stat_data_blocked = 1;
3415 			if (vports[i]->stat_data_enabled)
3416 				lpfc_vport_reset_stat_data(vports[i]);
3417 			spin_unlock_irq(v_shost->host_lock);
3418 		}
3419 
3420 		/* Set the bucket attributes */
3421 		phba->bucket_type = bucket_type;
3422 		phba->bucket_base = base;
3423 		phba->bucket_step = step;
3424 
3425 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3426 			v_shost = lpfc_shost_from_vport(vports[i]);
3427 
3428 			/* Unblock data collection */
3429 			spin_lock_irq(v_shost->host_lock);
3430 			vports[i]->stat_data_blocked = 0;
3431 			spin_unlock_irq(v_shost->host_lock);
3432 		}
3433 		lpfc_destroy_vport_work_array(phba, vports);
3434 		return strlen(buf);
3435 	}
3436 
3437 	if (!strncmp(buf, "destroybucket", strlen("destroybucket"))) {
3438 		vports = lpfc_create_vport_work_array(phba);
3439 		if (vports == NULL)
3440 			return -ENOMEM;
3441 
3442 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
3443 			v_shost = lpfc_shost_from_vport(vports[i]);
3444 			spin_lock_irq(shost->host_lock);
3445 			vports[i]->stat_data_blocked = 1;
3446 			lpfc_free_bucket(vport);
3447 			vport->stat_data_enabled = 0;
3448 			vports[i]->stat_data_blocked = 0;
3449 			spin_unlock_irq(shost->host_lock);
3450 		}
3451 		lpfc_destroy_vport_work_array(phba, vports);
3452 		phba->bucket_type = LPFC_NO_BUCKET;
3453 		phba->bucket_base = 0;
3454 		phba->bucket_step = 0;
3455 		return strlen(buf);
3456 	}
3457 
3458 	if (!strncmp(buf, "start", strlen("start"))) {
3459 		/* If no buckets configured return error */
3460 		if (phba->bucket_type == LPFC_NO_BUCKET)
3461 			return -EINVAL;
3462 		spin_lock_irq(shost->host_lock);
3463 		if (vport->stat_data_enabled) {
3464 			spin_unlock_irq(shost->host_lock);
3465 			return strlen(buf);
3466 		}
3467 		lpfc_alloc_bucket(vport);
3468 		vport->stat_data_enabled = 1;
3469 		spin_unlock_irq(shost->host_lock);
3470 		return strlen(buf);
3471 	}
3472 
3473 	if (!strncmp(buf, "stop", strlen("stop"))) {
3474 		spin_lock_irq(shost->host_lock);
3475 		if (vport->stat_data_enabled == 0) {
3476 			spin_unlock_irq(shost->host_lock);
3477 			return strlen(buf);
3478 		}
3479 		lpfc_free_bucket(vport);
3480 		vport->stat_data_enabled = 0;
3481 		spin_unlock_irq(shost->host_lock);
3482 		return strlen(buf);
3483 	}
3484 
3485 	if (!strncmp(buf, "reset", strlen("reset"))) {
3486 		if ((phba->bucket_type == LPFC_NO_BUCKET)
3487 			|| !vport->stat_data_enabled)
3488 			return strlen(buf);
3489 		spin_lock_irq(shost->host_lock);
3490 		vport->stat_data_blocked = 1;
3491 		lpfc_vport_reset_stat_data(vport);
3492 		vport->stat_data_blocked = 0;
3493 		spin_unlock_irq(shost->host_lock);
3494 		return strlen(buf);
3495 	}
3496 	return -EINVAL;
3497 }
3498 
3499 
3500 /**
3501  * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file
3502  * @dev: Pointer to class device object.
3503  * @buf: Data buffer.
3504  *
3505  * This function is the read call back function for
3506  * lpfc_stat_data_ctrl sysfs file. This function report the
3507  * current statistical data collection state.
3508  **/
3509 static ssize_t
3510 lpfc_stat_data_ctrl_show(struct device *dev, struct device_attribute *attr,
3511 			 char *buf)
3512 {
3513 	struct Scsi_Host  *shost = class_to_shost(dev);
3514 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3515 	struct lpfc_hba   *phba = vport->phba;
3516 	int index = 0;
3517 	int i;
3518 	char *bucket_type;
3519 	unsigned long bucket_value;
3520 
3521 	switch (phba->bucket_type) {
3522 	case LPFC_LINEAR_BUCKET:
3523 		bucket_type = "linear";
3524 		break;
3525 	case LPFC_POWER2_BUCKET:
3526 		bucket_type = "power2";
3527 		break;
3528 	default:
3529 		bucket_type = "No Bucket";
3530 		break;
3531 	}
3532 
3533 	sprintf(&buf[index], "Statistical Data enabled :%d, "
3534 		"blocked :%d, Bucket type :%s, Bucket base :%d,"
3535 		" Bucket step :%d\nLatency Ranges :",
3536 		vport->stat_data_enabled, vport->stat_data_blocked,
3537 		bucket_type, phba->bucket_base, phba->bucket_step);
3538 	index = strlen(buf);
3539 	if (phba->bucket_type != LPFC_NO_BUCKET) {
3540 		for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
3541 			if (phba->bucket_type == LPFC_LINEAR_BUCKET)
3542 				bucket_value = phba->bucket_base +
3543 					phba->bucket_step * i;
3544 			else
3545 				bucket_value = phba->bucket_base +
3546 				(1 << i) * phba->bucket_step;
3547 
3548 			if (index + 10 > PAGE_SIZE)
3549 				break;
3550 			sprintf(&buf[index], "%08ld ", bucket_value);
3551 			index = strlen(buf);
3552 		}
3553 	}
3554 	sprintf(&buf[index], "\n");
3555 	return strlen(buf);
3556 }
3557 
3558 /*
3559  * Sysfs attribute to control the statistical data collection.
3560  */
3561 static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR,
3562 		   lpfc_stat_data_ctrl_show, lpfc_stat_data_ctrl_store);
3563 
3564 /*
3565  * lpfc_drvr_stat_data: sysfs attr to get driver statistical data.
3566  */
3567 
3568 /*
3569  * Each Bucket takes 11 characters and 1 new line + 17 bytes WWN
3570  * for each target.
3571  */
3572 #define STAT_DATA_SIZE_PER_TARGET(NUM_BUCKETS) ((NUM_BUCKETS) * 11 + 18)
3573 #define MAX_STAT_DATA_SIZE_PER_TARGET \
3574 	STAT_DATA_SIZE_PER_TARGET(LPFC_MAX_BUCKET_COUNT)
3575 
3576 
3577 /**
3578  * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
3579  * @filp: sysfs file
3580  * @kobj: Pointer to the kernel object
3581  * @bin_attr: Attribute object
3582  * @buff: Buffer pointer
3583  * @off: File offset
3584  * @count: Buffer size
3585  *
3586  * This function is the read call back function for lpfc_drvr_stat_data
3587  * sysfs file. This function export the statistical data to user
3588  * applications.
3589  **/
3590 static ssize_t
3591 sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
3592 		struct bin_attribute *bin_attr,
3593 		char *buf, loff_t off, size_t count)
3594 {
3595 	struct device *dev = container_of(kobj, struct device,
3596 		kobj);
3597 	struct Scsi_Host  *shost = class_to_shost(dev);
3598 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3599 	struct lpfc_hba   *phba = vport->phba;
3600 	int i = 0, index = 0;
3601 	unsigned long nport_index;
3602 	struct lpfc_nodelist *ndlp = NULL;
3603 	nport_index = (unsigned long)off /
3604 		MAX_STAT_DATA_SIZE_PER_TARGET;
3605 
3606 	if (!vport->stat_data_enabled || vport->stat_data_blocked
3607 		|| (phba->bucket_type == LPFC_NO_BUCKET))
3608 		return 0;
3609 
3610 	spin_lock_irq(shost->host_lock);
3611 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3612 		if (!NLP_CHK_NODE_ACT(ndlp) || !ndlp->lat_data)
3613 			continue;
3614 
3615 		if (nport_index > 0) {
3616 			nport_index--;
3617 			continue;
3618 		}
3619 
3620 		if ((index + MAX_STAT_DATA_SIZE_PER_TARGET)
3621 			> count)
3622 			break;
3623 
3624 		if (!ndlp->lat_data)
3625 			continue;
3626 
3627 		/* Print the WWN */
3628 		sprintf(&buf[index], "%02x%02x%02x%02x%02x%02x%02x%02x:",
3629 			ndlp->nlp_portname.u.wwn[0],
3630 			ndlp->nlp_portname.u.wwn[1],
3631 			ndlp->nlp_portname.u.wwn[2],
3632 			ndlp->nlp_portname.u.wwn[3],
3633 			ndlp->nlp_portname.u.wwn[4],
3634 			ndlp->nlp_portname.u.wwn[5],
3635 			ndlp->nlp_portname.u.wwn[6],
3636 			ndlp->nlp_portname.u.wwn[7]);
3637 
3638 		index = strlen(buf);
3639 
3640 		for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
3641 			sprintf(&buf[index], "%010u,",
3642 				ndlp->lat_data[i].cmd_count);
3643 			index = strlen(buf);
3644 		}
3645 		sprintf(&buf[index], "\n");
3646 		index = strlen(buf);
3647 	}
3648 	spin_unlock_irq(shost->host_lock);
3649 	return index;
3650 }
3651 
3652 static struct bin_attribute sysfs_drvr_stat_data_attr = {
3653 	.attr = {
3654 		.name = "lpfc_drvr_stat_data",
3655 		.mode = S_IRUSR,
3656 	},
3657 	.size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET,
3658 	.read = sysfs_drvr_stat_data_read,
3659 	.write = NULL,
3660 };
3661 
3662 /*
3663 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
3664 # connection.
3665 # Value range is [0,16]. Default value is 0.
3666 */
3667 /**
3668  * lpfc_link_speed_set - Set the adapters link speed
3669  * @phba: lpfc_hba pointer.
3670  * @val: link speed value.
3671  *
3672  * Description:
3673  * If val is in a valid range then set the adapter's link speed field and
3674  * issue a lip; if the lip fails reset the link speed to the old value.
3675  *
3676  * Notes:
3677  * If the value is not in range log a kernel error message and return an error.
3678  *
3679  * Returns:
3680  * zero if val is in range and lip okay.
3681  * non-zero return value from lpfc_issue_lip()
3682  * -EINVAL val out of range
3683  **/
3684 static ssize_t
3685 lpfc_link_speed_store(struct device *dev, struct device_attribute *attr,
3686 		const char *buf, size_t count)
3687 {
3688 	struct Scsi_Host  *shost = class_to_shost(dev);
3689 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3690 	struct lpfc_hba   *phba = vport->phba;
3691 	int val = LPFC_USER_LINK_SPEED_AUTO;
3692 	int nolip = 0;
3693 	const char *val_buf = buf;
3694 	int err;
3695 	uint32_t prev_val;
3696 
3697 	if (!strncmp(buf, "nolip ", strlen("nolip "))) {
3698 		nolip = 1;
3699 		val_buf = &buf[strlen("nolip ")];
3700 	}
3701 
3702 	if (!isdigit(val_buf[0]))
3703 		return -EINVAL;
3704 	if (sscanf(val_buf, "%i", &val) != 1)
3705 		return -EINVAL;
3706 
3707 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3708 		"3055 lpfc_link_speed changed from %d to %d %s\n",
3709 		phba->cfg_link_speed, val, nolip ? "(nolip)" : "(lip)");
3710 
3711 	if (((val == LPFC_USER_LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) ||
3712 	    ((val == LPFC_USER_LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) ||
3713 	    ((val == LPFC_USER_LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) ||
3714 	    ((val == LPFC_USER_LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) ||
3715 	    ((val == LPFC_USER_LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)) ||
3716 	    ((val == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb))) {
3717 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3718 				"2879 lpfc_link_speed attribute cannot be set "
3719 				"to %d. Speed is not supported by this port.\n",
3720 				val);
3721 		return -EINVAL;
3722 	}
3723 	if (val == LPFC_USER_LINK_SPEED_16G &&
3724 		 phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
3725 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3726 				"3112 lpfc_link_speed attribute cannot be set "
3727 				"to %d. Speed is not supported in loop mode.\n",
3728 				val);
3729 		return -EINVAL;
3730 	}
3731 	if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) &&
3732 	    (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) {
3733 		prev_val = phba->cfg_link_speed;
3734 		phba->cfg_link_speed = val;
3735 		if (nolip)
3736 			return strlen(buf);
3737 
3738 		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
3739 		if (err) {
3740 			phba->cfg_link_speed = prev_val;
3741 			return -EINVAL;
3742 		} else
3743 			return strlen(buf);
3744 	}
3745 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3746 		"0469 lpfc_link_speed attribute cannot be set to %d, "
3747 		"allowed values are ["LPFC_LINK_SPEED_STRING"]\n", val);
3748 	return -EINVAL;
3749 }
3750 
3751 static int lpfc_link_speed = 0;
3752 module_param(lpfc_link_speed, int, S_IRUGO);
3753 MODULE_PARM_DESC(lpfc_link_speed, "Select link speed");
3754 lpfc_param_show(link_speed)
3755 
3756 /**
3757  * lpfc_link_speed_init - Set the adapters link speed
3758  * @phba: lpfc_hba pointer.
3759  * @val: link speed value.
3760  *
3761  * Description:
3762  * If val is in a valid range then set the adapter's link speed field.
3763  *
3764  * Notes:
3765  * If the value is not in range log a kernel error message, clear the link
3766  * speed and return an error.
3767  *
3768  * Returns:
3769  * zero if val saved.
3770  * -EINVAL val out of range
3771  **/
3772 static int
3773 lpfc_link_speed_init(struct lpfc_hba *phba, int val)
3774 {
3775 	if (val == LPFC_USER_LINK_SPEED_16G && phba->cfg_topology == 4) {
3776 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3777 			"3111 lpfc_link_speed of %d cannot "
3778 			"support loop mode, setting topology to default.\n",
3779 			 val);
3780 		phba->cfg_topology = 0;
3781 	}
3782 	if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) &&
3783 	    (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) {
3784 		phba->cfg_link_speed = val;
3785 		return 0;
3786 	}
3787 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3788 			"0405 lpfc_link_speed attribute cannot "
3789 			"be set to %d, allowed values are "
3790 			"["LPFC_LINK_SPEED_STRING"]\n", val);
3791 	phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
3792 	return -EINVAL;
3793 }
3794 
3795 static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR,
3796 		   lpfc_link_speed_show, lpfc_link_speed_store);
3797 
3798 /*
3799 # lpfc_aer_support: Support PCIe device Advanced Error Reporting (AER)
3800 #       0  = aer disabled or not supported
3801 #       1  = aer supported and enabled (default)
3802 # Value range is [0,1]. Default value is 1.
3803 */
3804 
3805 /**
3806  * lpfc_aer_support_store - Set the adapter for aer support
3807  *
3808  * @dev: class device that is converted into a Scsi_host.
3809  * @attr: device attribute, not used.
3810  * @buf: containing enable or disable aer flag.
3811  * @count: unused variable.
3812  *
3813  * Description:
3814  * If the val is 1 and currently the device's AER capability was not
3815  * enabled, invoke the kernel's enable AER helper routine, trying to
3816  * enable the device's AER capability. If the helper routine enabling
3817  * AER returns success, update the device's cfg_aer_support flag to
3818  * indicate AER is supported by the device; otherwise, if the device
3819  * AER capability is already enabled to support AER, then do nothing.
3820  *
3821  * If the val is 0 and currently the device's AER support was enabled,
3822  * invoke the kernel's disable AER helper routine. After that, update
3823  * the device's cfg_aer_support flag to indicate AER is not supported
3824  * by the device; otherwise, if the device AER capability is already
3825  * disabled from supporting AER, then do nothing.
3826  *
3827  * Returns:
3828  * length of the buf on success if val is in range the intended mode
3829  * is supported.
3830  * -EINVAL if val out of range or intended mode is not supported.
3831  **/
3832 static ssize_t
3833 lpfc_aer_support_store(struct device *dev, struct device_attribute *attr,
3834 		       const char *buf, size_t count)
3835 {
3836 	struct Scsi_Host *shost = class_to_shost(dev);
3837 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
3838 	struct lpfc_hba *phba = vport->phba;
3839 	int val = 0, rc = -EINVAL;
3840 
3841 	if (!isdigit(buf[0]))
3842 		return -EINVAL;
3843 	if (sscanf(buf, "%i", &val) != 1)
3844 		return -EINVAL;
3845 
3846 	switch (val) {
3847 	case 0:
3848 		if (phba->hba_flag & HBA_AER_ENABLED) {
3849 			rc = pci_disable_pcie_error_reporting(phba->pcidev);
3850 			if (!rc) {
3851 				spin_lock_irq(&phba->hbalock);
3852 				phba->hba_flag &= ~HBA_AER_ENABLED;
3853 				spin_unlock_irq(&phba->hbalock);
3854 				phba->cfg_aer_support = 0;
3855 				rc = strlen(buf);
3856 			} else
3857 				rc = -EPERM;
3858 		} else {
3859 			phba->cfg_aer_support = 0;
3860 			rc = strlen(buf);
3861 		}
3862 		break;
3863 	case 1:
3864 		if (!(phba->hba_flag & HBA_AER_ENABLED)) {
3865 			rc = pci_enable_pcie_error_reporting(phba->pcidev);
3866 			if (!rc) {
3867 				spin_lock_irq(&phba->hbalock);
3868 				phba->hba_flag |= HBA_AER_ENABLED;
3869 				spin_unlock_irq(&phba->hbalock);
3870 				phba->cfg_aer_support = 1;
3871 				rc = strlen(buf);
3872 			} else
3873 				 rc = -EPERM;
3874 		} else {
3875 			phba->cfg_aer_support = 1;
3876 			rc = strlen(buf);
3877 		}
3878 		break;
3879 	default:
3880 		rc = -EINVAL;
3881 		break;
3882 	}
3883 	return rc;
3884 }
3885 
3886 static int lpfc_aer_support = 1;
3887 module_param(lpfc_aer_support, int, S_IRUGO);
3888 MODULE_PARM_DESC(lpfc_aer_support, "Enable PCIe device AER support");
3889 lpfc_param_show(aer_support)
3890 
3891 /**
3892  * lpfc_aer_support_init - Set the initial adapters aer support flag
3893  * @phba: lpfc_hba pointer.
3894  * @val: enable aer or disable aer flag.
3895  *
3896  * Description:
3897  * If val is in a valid range [0,1], then set the adapter's initial
3898  * cfg_aer_support field. It will be up to the driver's probe_one
3899  * routine to determine whether the device's AER support can be set
3900  * or not.
3901  *
3902  * Notes:
3903  * If the value is not in range log a kernel error message, and
3904  * choose the default value of setting AER support and return.
3905  *
3906  * Returns:
3907  * zero if val saved.
3908  * -EINVAL val out of range
3909  **/
3910 static int
3911 lpfc_aer_support_init(struct lpfc_hba *phba, int val)
3912 {
3913 	if (val == 0 || val == 1) {
3914 		phba->cfg_aer_support = val;
3915 		return 0;
3916 	}
3917 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3918 			"2712 lpfc_aer_support attribute value %d out "
3919 			"of range, allowed values are 0|1, setting it "
3920 			"to default value of 1\n", val);
3921 	/* By default, try to enable AER on a device */
3922 	phba->cfg_aer_support = 1;
3923 	return -EINVAL;
3924 }
3925 
3926 static DEVICE_ATTR(lpfc_aer_support, S_IRUGO | S_IWUSR,
3927 		   lpfc_aer_support_show, lpfc_aer_support_store);
3928 
3929 /**
3930  * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled device
3931  * @dev: class device that is converted into a Scsi_host.
3932  * @attr: device attribute, not used.
3933  * @buf: containing flag 1 for aer cleanup state.
3934  * @count: unused variable.
3935  *
3936  * Description:
3937  * If the @buf contains 1 and the device currently has the AER support
3938  * enabled, then invokes the kernel AER helper routine
3939  * pci_cleanup_aer_uncorrect_error_status to clean up the uncorrectable
3940  * error status register.
3941  *
3942  * Notes:
3943  *
3944  * Returns:
3945  * -EINVAL if the buf does not contain the 1 or the device is not currently
3946  * enabled with the AER support.
3947  **/
3948 static ssize_t
3949 lpfc_aer_cleanup_state(struct device *dev, struct device_attribute *attr,
3950 		       const char *buf, size_t count)
3951 {
3952 	struct Scsi_Host  *shost = class_to_shost(dev);
3953 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3954 	struct lpfc_hba   *phba = vport->phba;
3955 	int val, rc = -1;
3956 
3957 	if (!isdigit(buf[0]))
3958 		return -EINVAL;
3959 	if (sscanf(buf, "%i", &val) != 1)
3960 		return -EINVAL;
3961 	if (val != 1)
3962 		return -EINVAL;
3963 
3964 	if (phba->hba_flag & HBA_AER_ENABLED)
3965 		rc = pci_cleanup_aer_uncorrect_error_status(phba->pcidev);
3966 
3967 	if (rc == 0)
3968 		return strlen(buf);
3969 	else
3970 		return -EPERM;
3971 }
3972 
3973 static DEVICE_ATTR(lpfc_aer_state_cleanup, S_IWUSR, NULL,
3974 		   lpfc_aer_cleanup_state);
3975 
3976 /**
3977  * lpfc_sriov_nr_virtfn_store - Enable the adapter for sr-iov virtual functions
3978  *
3979  * @dev: class device that is converted into a Scsi_host.
3980  * @attr: device attribute, not used.
3981  * @buf: containing the string the number of vfs to be enabled.
3982  * @count: unused variable.
3983  *
3984  * Description:
3985  * When this api is called either through user sysfs, the driver shall
3986  * try to enable or disable SR-IOV virtual functions according to the
3987  * following:
3988  *
3989  * If zero virtual function has been enabled to the physical function,
3990  * the driver shall invoke the pci enable virtual function api trying
3991  * to enable the virtual functions. If the nr_vfn provided is greater
3992  * than the maximum supported, the maximum virtual function number will
3993  * be used for invoking the api; otherwise, the nr_vfn provided shall
3994  * be used for invoking the api. If the api call returned success, the
3995  * actual number of virtual functions enabled will be set to the driver
3996  * cfg_sriov_nr_virtfn; otherwise, -EINVAL shall be returned and driver
3997  * cfg_sriov_nr_virtfn remains zero.
3998  *
3999  * If none-zero virtual functions have already been enabled to the
4000  * physical function, as reflected by the driver's cfg_sriov_nr_virtfn,
4001  * -EINVAL will be returned and the driver does nothing;
4002  *
4003  * If the nr_vfn provided is zero and none-zero virtual functions have
4004  * been enabled, as indicated by the driver's cfg_sriov_nr_virtfn, the
4005  * disabling virtual function api shall be invoded to disable all the
4006  * virtual functions and driver's cfg_sriov_nr_virtfn shall be set to
4007  * zero. Otherwise, if zero virtual function has been enabled, do
4008  * nothing.
4009  *
4010  * Returns:
4011  * length of the buf on success if val is in range the intended mode
4012  * is supported.
4013  * -EINVAL if val out of range or intended mode is not supported.
4014  **/
4015 static ssize_t
4016 lpfc_sriov_nr_virtfn_store(struct device *dev, struct device_attribute *attr,
4017 			 const char *buf, size_t count)
4018 {
4019 	struct Scsi_Host *shost = class_to_shost(dev);
4020 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4021 	struct lpfc_hba *phba = vport->phba;
4022 	struct pci_dev *pdev = phba->pcidev;
4023 	int val = 0, rc = -EINVAL;
4024 
4025 	/* Sanity check on user data */
4026 	if (!isdigit(buf[0]))
4027 		return -EINVAL;
4028 	if (sscanf(buf, "%i", &val) != 1)
4029 		return -EINVAL;
4030 	if (val < 0)
4031 		return -EINVAL;
4032 
4033 	/* Request disabling virtual functions */
4034 	if (val == 0) {
4035 		if (phba->cfg_sriov_nr_virtfn > 0) {
4036 			pci_disable_sriov(pdev);
4037 			phba->cfg_sriov_nr_virtfn = 0;
4038 		}
4039 		return strlen(buf);
4040 	}
4041 
4042 	/* Request enabling virtual functions */
4043 	if (phba->cfg_sriov_nr_virtfn > 0) {
4044 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4045 				"3018 There are %d virtual functions "
4046 				"enabled on physical function.\n",
4047 				phba->cfg_sriov_nr_virtfn);
4048 		return -EEXIST;
4049 	}
4050 
4051 	if (val <= LPFC_MAX_VFN_PER_PFN)
4052 		phba->cfg_sriov_nr_virtfn = val;
4053 	else {
4054 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4055 				"3019 Enabling %d virtual functions is not "
4056 				"allowed.\n", val);
4057 		return -EINVAL;
4058 	}
4059 
4060 	rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn);
4061 	if (rc) {
4062 		phba->cfg_sriov_nr_virtfn = 0;
4063 		rc = -EPERM;
4064 	} else
4065 		rc = strlen(buf);
4066 
4067 	return rc;
4068 }
4069 
4070 static int lpfc_sriov_nr_virtfn = LPFC_DEF_VFN_PER_PFN;
4071 module_param(lpfc_sriov_nr_virtfn, int, S_IRUGO|S_IWUSR);
4072 MODULE_PARM_DESC(lpfc_sriov_nr_virtfn, "Enable PCIe device SR-IOV virtual fn");
4073 lpfc_param_show(sriov_nr_virtfn)
4074 
4075 /**
4076  * lpfc_sriov_nr_virtfn_init - Set the initial sr-iov virtual function enable
4077  * @phba: lpfc_hba pointer.
4078  * @val: link speed value.
4079  *
4080  * Description:
4081  * If val is in a valid range [0,255], then set the adapter's initial
4082  * cfg_sriov_nr_virtfn field. If it's greater than the maximum, the maximum
4083  * number shall be used instead. It will be up to the driver's probe_one
4084  * routine to determine whether the device's SR-IOV is supported or not.
4085  *
4086  * Returns:
4087  * zero if val saved.
4088  * -EINVAL val out of range
4089  **/
4090 static int
4091 lpfc_sriov_nr_virtfn_init(struct lpfc_hba *phba, int val)
4092 {
4093 	if (val >= 0 && val <= LPFC_MAX_VFN_PER_PFN) {
4094 		phba->cfg_sriov_nr_virtfn = val;
4095 		return 0;
4096 	}
4097 
4098 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4099 			"3017 Enabling %d virtual functions is not "
4100 			"allowed.\n", val);
4101 	return -EINVAL;
4102 }
4103 static DEVICE_ATTR(lpfc_sriov_nr_virtfn, S_IRUGO | S_IWUSR,
4104 		   lpfc_sriov_nr_virtfn_show, lpfc_sriov_nr_virtfn_store);
4105 
4106 /**
4107  * lpfc_request_firmware_store - Request for Linux generic firmware upgrade
4108  *
4109  * @dev: class device that is converted into a Scsi_host.
4110  * @attr: device attribute, not used.
4111  * @buf: containing the string the number of vfs to be enabled.
4112  * @count: unused variable.
4113  *
4114  * Description:
4115  *
4116  * Returns:
4117  * length of the buf on success if val is in range the intended mode
4118  * is supported.
4119  * -EINVAL if val out of range or intended mode is not supported.
4120  **/
4121 static ssize_t
4122 lpfc_request_firmware_upgrade_store(struct device *dev,
4123 				    struct device_attribute *attr,
4124 				    const char *buf, size_t count)
4125 {
4126 	struct Scsi_Host *shost = class_to_shost(dev);
4127 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4128 	struct lpfc_hba *phba = vport->phba;
4129 	int val = 0, rc = -EINVAL;
4130 
4131 	/* Sanity check on user data */
4132 	if (!isdigit(buf[0]))
4133 		return -EINVAL;
4134 	if (sscanf(buf, "%i", &val) != 1)
4135 		return -EINVAL;
4136 	if (val != 1)
4137 		return -EINVAL;
4138 
4139 	rc = lpfc_sli4_request_firmware_update(phba, RUN_FW_UPGRADE);
4140 	if (rc)
4141 		rc = -EPERM;
4142 	else
4143 		rc = strlen(buf);
4144 	return rc;
4145 }
4146 
4147 static int lpfc_req_fw_upgrade;
4148 module_param(lpfc_req_fw_upgrade, int, S_IRUGO|S_IWUSR);
4149 MODULE_PARM_DESC(lpfc_req_fw_upgrade, "Enable Linux generic firmware upgrade");
4150 lpfc_param_show(request_firmware_upgrade)
4151 
4152 /**
4153  * lpfc_request_firmware_upgrade_init - Enable initial linux generic fw upgrade
4154  * @phba: lpfc_hba pointer.
4155  * @val: 0 or 1.
4156  *
4157  * Description:
4158  * Set the initial Linux generic firmware upgrade enable or disable flag.
4159  *
4160  * Returns:
4161  * zero if val saved.
4162  * -EINVAL val out of range
4163  **/
4164 static int
4165 lpfc_request_firmware_upgrade_init(struct lpfc_hba *phba, int val)
4166 {
4167 	if (val >= 0 && val <= 1) {
4168 		phba->cfg_request_firmware_upgrade = val;
4169 		return 0;
4170 	}
4171 	return -EINVAL;
4172 }
4173 static DEVICE_ATTR(lpfc_req_fw_upgrade, S_IRUGO | S_IWUSR,
4174 		   lpfc_request_firmware_upgrade_show,
4175 		   lpfc_request_firmware_upgrade_store);
4176 
4177 /**
4178  * lpfc_fcp_imax_store
4179  *
4180  * @dev: class device that is converted into a Scsi_host.
4181  * @attr: device attribute, not used.
4182  * @buf: string with the number of fast-path FCP interrupts per second.
4183  * @count: unused variable.
4184  *
4185  * Description:
4186  * If val is in a valid range [636,651042], then set the adapter's
4187  * maximum number of fast-path FCP interrupts per second.
4188  *
4189  * Returns:
4190  * length of the buf on success if val is in range the intended mode
4191  * is supported.
4192  * -EINVAL if val out of range or intended mode is not supported.
4193  **/
4194 static ssize_t
4195 lpfc_fcp_imax_store(struct device *dev, struct device_attribute *attr,
4196 			 const char *buf, size_t count)
4197 {
4198 	struct Scsi_Host *shost = class_to_shost(dev);
4199 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4200 	struct lpfc_hba *phba = vport->phba;
4201 	int val = 0, i;
4202 
4203 	/* fcp_imax is only valid for SLI4 */
4204 	if (phba->sli_rev != LPFC_SLI_REV4)
4205 		return -EINVAL;
4206 
4207 	/* Sanity check on user data */
4208 	if (!isdigit(buf[0]))
4209 		return -EINVAL;
4210 	if (sscanf(buf, "%i", &val) != 1)
4211 		return -EINVAL;
4212 
4213 	/*
4214 	 * Value range for the HBA is [5000,5000000]
4215 	 * The value for each EQ depends on how many EQs are configured.
4216 	 */
4217 	if (val < LPFC_MIN_IMAX || val > LPFC_MAX_IMAX)
4218 		return -EINVAL;
4219 
4220 	phba->cfg_fcp_imax = (uint32_t)val;
4221 	for (i = 0; i < phba->cfg_fcp_io_channel; i += LPFC_MAX_EQ_DELAY)
4222 		lpfc_modify_fcp_eq_delay(phba, i);
4223 
4224 	return strlen(buf);
4225 }
4226 
4227 /*
4228 # lpfc_fcp_imax: The maximum number of fast-path FCP interrupts per second
4229 # for the HBA.
4230 #
4231 # Value range is [5,000 to 5,000,000]. Default value is 50,000.
4232 */
4233 static int lpfc_fcp_imax = LPFC_DEF_IMAX;
4234 module_param(lpfc_fcp_imax, int, S_IRUGO|S_IWUSR);
4235 MODULE_PARM_DESC(lpfc_fcp_imax,
4236 	    "Set the maximum number of FCP interrupts per second per HBA");
4237 lpfc_param_show(fcp_imax)
4238 
4239 /**
4240  * lpfc_fcp_imax_init - Set the initial sr-iov virtual function enable
4241  * @phba: lpfc_hba pointer.
4242  * @val: link speed value.
4243  *
4244  * Description:
4245  * If val is in a valid range [636,651042], then initialize the adapter's
4246  * maximum number of fast-path FCP interrupts per second.
4247  *
4248  * Returns:
4249  * zero if val saved.
4250  * -EINVAL val out of range
4251  **/
4252 static int
4253 lpfc_fcp_imax_init(struct lpfc_hba *phba, int val)
4254 {
4255 	if (phba->sli_rev != LPFC_SLI_REV4) {
4256 		phba->cfg_fcp_imax = 0;
4257 		return 0;
4258 	}
4259 
4260 	if (val >= LPFC_MIN_IMAX && val <= LPFC_MAX_IMAX) {
4261 		phba->cfg_fcp_imax = val;
4262 		return 0;
4263 	}
4264 
4265 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4266 			"3016 fcp_imax: %d out of range, using default\n", val);
4267 	phba->cfg_fcp_imax = LPFC_DEF_IMAX;
4268 
4269 	return 0;
4270 }
4271 
4272 static DEVICE_ATTR(lpfc_fcp_imax, S_IRUGO | S_IWUSR,
4273 		   lpfc_fcp_imax_show, lpfc_fcp_imax_store);
4274 
4275 /**
4276  * lpfc_state_show - Display current driver CPU affinity
4277  * @dev: class converted to a Scsi_host structure.
4278  * @attr: device attribute, not used.
4279  * @buf: on return contains text describing the state of the link.
4280  *
4281  * Returns: size of formatted string.
4282  **/
4283 static ssize_t
4284 lpfc_fcp_cpu_map_show(struct device *dev, struct device_attribute *attr,
4285 		      char *buf)
4286 {
4287 	struct Scsi_Host  *shost = class_to_shost(dev);
4288 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4289 	struct lpfc_hba   *phba = vport->phba;
4290 	struct lpfc_vector_map_info *cpup;
4291 	int  len = 0;
4292 
4293 	if ((phba->sli_rev != LPFC_SLI_REV4) ||
4294 	    (phba->intr_type != MSIX))
4295 		return len;
4296 
4297 	switch (phba->cfg_fcp_cpu_map) {
4298 	case 0:
4299 		len += snprintf(buf + len, PAGE_SIZE-len,
4300 				"fcp_cpu_map: No mapping (%d)\n",
4301 				phba->cfg_fcp_cpu_map);
4302 		return len;
4303 	case 1:
4304 		len += snprintf(buf + len, PAGE_SIZE-len,
4305 				"fcp_cpu_map: HBA centric mapping (%d): "
4306 				"%d online CPUs\n",
4307 				phba->cfg_fcp_cpu_map,
4308 				phba->sli4_hba.num_online_cpu);
4309 		break;
4310 	case 2:
4311 		len += snprintf(buf + len, PAGE_SIZE-len,
4312 				"fcp_cpu_map: Driver centric mapping (%d): "
4313 				"%d online CPUs\n",
4314 				phba->cfg_fcp_cpu_map,
4315 				phba->sli4_hba.num_online_cpu);
4316 		break;
4317 	}
4318 
4319 	while (phba->sli4_hba.curr_disp_cpu < phba->sli4_hba.num_present_cpu) {
4320 		cpup = &phba->sli4_hba.cpu_map[phba->sli4_hba.curr_disp_cpu];
4321 
4322 		/* margin should fit in this and the truncated message */
4323 		if (cpup->irq == LPFC_VECTOR_MAP_EMPTY)
4324 			len += snprintf(buf + len, PAGE_SIZE-len,
4325 					"CPU %02d io_chan %02d "
4326 					"physid %d coreid %d\n",
4327 					phba->sli4_hba.curr_disp_cpu,
4328 					cpup->channel_id, cpup->phys_id,
4329 					cpup->core_id);
4330 		else
4331 			len += snprintf(buf + len, PAGE_SIZE-len,
4332 					"CPU %02d io_chan %02d "
4333 					"physid %d coreid %d IRQ %d\n",
4334 					phba->sli4_hba.curr_disp_cpu,
4335 					cpup->channel_id, cpup->phys_id,
4336 					cpup->core_id, cpup->irq);
4337 
4338 		phba->sli4_hba.curr_disp_cpu++;
4339 
4340 		/* display max number of CPUs keeping some margin */
4341 		if (phba->sli4_hba.curr_disp_cpu <
4342 				phba->sli4_hba.num_present_cpu &&
4343 				(len >= (PAGE_SIZE - 64))) {
4344 			len += snprintf(buf + len, PAGE_SIZE-len, "more...\n");
4345 			break;
4346 		}
4347 	}
4348 
4349 	if (phba->sli4_hba.curr_disp_cpu == phba->sli4_hba.num_present_cpu)
4350 		phba->sli4_hba.curr_disp_cpu = 0;
4351 
4352 	return len;
4353 }
4354 
4355 /**
4356  * lpfc_fcp_cpu_map_store - Change CPU affinity of driver vectors
4357  * @dev: class device that is converted into a Scsi_host.
4358  * @attr: device attribute, not used.
4359  * @buf: one or more lpfc_polling_flags values.
4360  * @count: not used.
4361  *
4362  * Returns:
4363  * -EINVAL  - Not implemented yet.
4364  **/
4365 static ssize_t
4366 lpfc_fcp_cpu_map_store(struct device *dev, struct device_attribute *attr,
4367 		       const char *buf, size_t count)
4368 {
4369 	int status = -EINVAL;
4370 	return status;
4371 }
4372 
4373 /*
4374 # lpfc_fcp_cpu_map: Defines how to map CPUs to IRQ vectors
4375 # for the HBA.
4376 #
4377 # Value range is [0 to 2]. Default value is LPFC_DRIVER_CPU_MAP (2).
4378 #	0 - Do not affinitze IRQ vectors
4379 #	1 - Affintize HBA vectors with respect to each HBA
4380 #	    (start with CPU0 for each HBA)
4381 #	2 - Affintize HBA vectors with respect to the entire driver
4382 #	    (round robin thru all CPUs across all HBAs)
4383 */
4384 static int lpfc_fcp_cpu_map = LPFC_DRIVER_CPU_MAP;
4385 module_param(lpfc_fcp_cpu_map, int, S_IRUGO|S_IWUSR);
4386 MODULE_PARM_DESC(lpfc_fcp_cpu_map,
4387 		 "Defines how to map CPUs to IRQ vectors per HBA");
4388 
4389 /**
4390  * lpfc_fcp_cpu_map_init - Set the initial sr-iov virtual function enable
4391  * @phba: lpfc_hba pointer.
4392  * @val: link speed value.
4393  *
4394  * Description:
4395  * If val is in a valid range [0-2], then affinitze the adapter's
4396  * MSIX vectors.
4397  *
4398  * Returns:
4399  * zero if val saved.
4400  * -EINVAL val out of range
4401  **/
4402 static int
4403 lpfc_fcp_cpu_map_init(struct lpfc_hba *phba, int val)
4404 {
4405 	if (phba->sli_rev != LPFC_SLI_REV4) {
4406 		phba->cfg_fcp_cpu_map = 0;
4407 		return 0;
4408 	}
4409 
4410 	if (val >= LPFC_MIN_CPU_MAP && val <= LPFC_MAX_CPU_MAP) {
4411 		phba->cfg_fcp_cpu_map = val;
4412 		return 0;
4413 	}
4414 
4415 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4416 			"3326 fcp_cpu_map: %d out of range, using default\n",
4417 			val);
4418 	phba->cfg_fcp_cpu_map = LPFC_DRIVER_CPU_MAP;
4419 
4420 	return 0;
4421 }
4422 
4423 static DEVICE_ATTR(lpfc_fcp_cpu_map, S_IRUGO | S_IWUSR,
4424 		   lpfc_fcp_cpu_map_show, lpfc_fcp_cpu_map_store);
4425 
4426 /*
4427 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
4428 # Value range is [2,3]. Default value is 3.
4429 */
4430 LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3,
4431 		  "Select Fibre Channel class of service for FCP sequences");
4432 
4433 /*
4434 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
4435 # is [0,1]. Default value is 0.
4436 */
4437 LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1,
4438 		   "Use ADISC on rediscovery to authenticate FCP devices");
4439 
4440 /*
4441 # lpfc_first_burst_size: First burst size to use on the NPorts
4442 # that support first burst.
4443 # Value range is [0,65536]. Default value is 0.
4444 */
4445 LPFC_VPORT_ATTR_RW(first_burst_size, 0, 0, 65536,
4446 		   "First burst size for Targets that support first burst");
4447 
4448 /*
4449 # lpfc_max_scsicmpl_time: Use scsi command completion time to control I/O queue
4450 # depth. Default value is 0. When the value of this parameter is zero the
4451 # SCSI command completion time is not used for controlling I/O queue depth. When
4452 # the parameter is set to a non-zero value, the I/O queue depth is controlled
4453 # to limit the I/O completion time to the parameter value.
4454 # The value is set in milliseconds.
4455 */
4456 static int lpfc_max_scsicmpl_time;
4457 module_param(lpfc_max_scsicmpl_time, int, S_IRUGO);
4458 MODULE_PARM_DESC(lpfc_max_scsicmpl_time,
4459 	"Use command completion time to control queue depth");
4460 lpfc_vport_param_show(max_scsicmpl_time);
4461 lpfc_vport_param_init(max_scsicmpl_time, 0, 0, 60000);
4462 static int
4463 lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val)
4464 {
4465 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
4466 	struct lpfc_nodelist *ndlp, *next_ndlp;
4467 
4468 	if (val == vport->cfg_max_scsicmpl_time)
4469 		return 0;
4470 	if ((val < 0) || (val > 60000))
4471 		return -EINVAL;
4472 	vport->cfg_max_scsicmpl_time = val;
4473 
4474 	spin_lock_irq(shost->host_lock);
4475 	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
4476 		if (!NLP_CHK_NODE_ACT(ndlp))
4477 			continue;
4478 		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
4479 			continue;
4480 		ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
4481 	}
4482 	spin_unlock_irq(shost->host_lock);
4483 	return 0;
4484 }
4485 lpfc_vport_param_store(max_scsicmpl_time);
4486 static DEVICE_ATTR(lpfc_max_scsicmpl_time, S_IRUGO | S_IWUSR,
4487 		   lpfc_max_scsicmpl_time_show,
4488 		   lpfc_max_scsicmpl_time_store);
4489 
4490 /*
4491 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
4492 # range is [0,1]. Default value is 0.
4493 */
4494 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
4495 
4496 /*
4497 # lpfc_fcp_io_sched: Determine scheduling algrithmn for issuing FCP cmds
4498 # range is [0,1]. Default value is 0.
4499 # For [0], FCP commands are issued to Work Queues ina round robin fashion.
4500 # For [1], FCP commands are issued to a Work Queue associated with the
4501 #          current CPU.
4502 # It would be set to 1 by the driver if it's able to set up cpu affinity
4503 # for FCP I/Os through Work Queue associated with the current CPU. Otherwise,
4504 # roundrobin scheduling of FCP I/Os through WQs will be used.
4505 */
4506 LPFC_ATTR_RW(fcp_io_sched, 0, 0, 1, "Determine scheduling algorithm for "
4507 		"issuing commands [0] - Round Robin, [1] - Current CPU");
4508 
4509 /*
4510 # lpfc_fcp2_no_tgt_reset: Determine bus reset behavior
4511 # range is [0,1]. Default value is 0.
4512 # For [0], bus reset issues target reset to ALL devices
4513 # For [1], bus reset issues target reset to non-FCP2 devices
4514 */
4515 LPFC_ATTR_RW(fcp2_no_tgt_reset, 0, 0, 1, "Determine bus reset behavior for "
4516 	     "FCP2 devices [0] - issue tgt reset, [1] - no tgt reset");
4517 
4518 
4519 /*
4520 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
4521 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take
4522 # value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
4523 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if
4524 # cr_delay is set to 0.
4525 */
4526 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
4527 		"interrupt response is generated");
4528 
4529 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
4530 		"interrupt response is generated");
4531 
4532 /*
4533 # lpfc_multi_ring_support:  Determines how many rings to spread available
4534 # cmd/rsp IOCB entries across.
4535 # Value range is [1,2]. Default value is 1.
4536 */
4537 LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
4538 		"SLI rings to spread IOCB entries across");
4539 
4540 /*
4541 # lpfc_multi_ring_rctl:  If lpfc_multi_ring_support is enabled, this
4542 # identifies what rctl value to configure the additional ring for.
4543 # Value range is [1,0xff]. Default value is 4 (Unsolicated Data).
4544 */
4545 LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1,
4546 	     255, "Identifies RCTL for additional ring configuration");
4547 
4548 /*
4549 # lpfc_multi_ring_type:  If lpfc_multi_ring_support is enabled, this
4550 # identifies what type value to configure the additional ring for.
4551 # Value range is [1,0xff]. Default value is 5 (LLC/SNAP).
4552 */
4553 LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1,
4554 	     255, "Identifies TYPE for additional ring configuration");
4555 
4556 /*
4557 # lpfc_fdmi_on: controls FDMI support.
4558 #       0 = no FDMI support
4559 #       1 = support FDMI without attribute of hostname
4560 #       2 = support FDMI with attribute of hostname
4561 # Value range [0,2]. Default value is 0.
4562 */
4563 LPFC_VPORT_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support");
4564 
4565 /*
4566 # Specifies the maximum number of ELS cmds we can have outstanding (for
4567 # discovery). Value range is [1,64]. Default value = 32.
4568 */
4569 LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
4570 		 "during discovery");
4571 
4572 /*
4573 # lpfc_max_luns: maximum allowed LUN ID. This is the highest LUN ID that
4574 #    will be scanned by the SCSI midlayer when sequential scanning is
4575 #    used; and is also the highest LUN ID allowed when the SCSI midlayer
4576 #    parses REPORT_LUN responses. The lpfc driver has no LUN count or
4577 #    LUN ID limit, but the SCSI midlayer requires this field for the uses
4578 #    above. The lpfc driver limits the default value to 255 for two reasons.
4579 #    As it bounds the sequential scan loop, scanning for thousands of luns
4580 #    on a target can take minutes of wall clock time.  Additionally,
4581 #    there are FC targets, such as JBODs, that only recognize 8-bits of
4582 #    LUN ID. When they receive a value greater than 8 bits, they chop off
4583 #    the high order bits. In other words, they see LUN IDs 0, 256, 512,
4584 #    and so on all as LUN ID 0. This causes the linux kernel, which sees
4585 #    valid responses at each of the LUN IDs, to believe there are multiple
4586 #    devices present, when in fact, there is only 1.
4587 #    A customer that is aware of their target behaviors, and the results as
4588 #    indicated above, is welcome to increase the lpfc_max_luns value.
4589 #    As mentioned, this value is not used by the lpfc driver, only the
4590 #    SCSI midlayer.
4591 # Value range is [0,65535]. Default value is 255.
4592 # NOTE: The SCSI layer might probe all allowed LUN on some old targets.
4593 */
4594 LPFC_VPORT_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN ID");
4595 
4596 /*
4597 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
4598 # Value range is [1,255], default value is 10.
4599 */
4600 LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
4601 	     "Milliseconds driver will wait between polling FCP ring");
4602 
4603 /*
4604 # lpfc_task_mgmt_tmo: Maximum time to wait for task management commands
4605 # to complete in seconds. Value range is [5,180], default value is 60.
4606 */
4607 LPFC_ATTR_RW(task_mgmt_tmo, 60, 5, 180,
4608 	     "Maximum time to wait for task management commands to complete");
4609 /*
4610 # lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
4611 #		support this feature
4612 #       0  = MSI disabled
4613 #       1  = MSI enabled
4614 #       2  = MSI-X enabled (default)
4615 # Value range is [0,2]. Default value is 2.
4616 */
4617 LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
4618 	    "MSI-X (2), if possible");
4619 
4620 /*
4621 # lpfc_fcp_io_channel: Set the number of FCP EQ/CQ/WQ IO channels
4622 #
4623 # Value range is [1,7]. Default value is 4.
4624 */
4625 LPFC_ATTR_R(fcp_io_channel, LPFC_FCP_IO_CHAN_DEF, LPFC_FCP_IO_CHAN_MIN,
4626 	    LPFC_FCP_IO_CHAN_MAX,
4627 	    "Set the number of FCP I/O channels");
4628 
4629 /*
4630 # lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware.
4631 #       0  = HBA resets disabled
4632 #       1  = HBA resets enabled (default)
4633 # Value range is [0,1]. Default value is 1.
4634 */
4635 LPFC_ATTR_R(enable_hba_reset, 1, 0, 1, "Enable HBA resets from the driver.");
4636 
4637 /*
4638 # lpfc_enable_hba_heartbeat: Disable HBA heartbeat timer..
4639 #       0  = HBA Heartbeat disabled
4640 #       1  = HBA Heartbeat enabled (default)
4641 # Value range is [0,1]. Default value is 1.
4642 */
4643 LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat.");
4644 
4645 /*
4646 # lpfc_EnableXLane: Enable Express Lane Feature
4647 #      0x0   Express Lane Feature disabled
4648 #      0x1   Express Lane Feature enabled
4649 # Value range is [0,1]. Default value is 0.
4650 */
4651 LPFC_ATTR_R(EnableXLane, 0, 0, 1, "Enable Express Lane Feature.");
4652 
4653 /*
4654 # lpfc_XLanePriority:  Define CS_CTL priority for Express Lane Feature
4655 #       0x0 - 0x7f  = CS_CTL field in FC header (high 7 bits)
4656 # Value range is [0x0,0x7f]. Default value is 0
4657 */
4658 LPFC_ATTR_R(XLanePriority, 0, 0x0, 0x7f, "CS_CTL for Express Lane Feature.");
4659 
4660 /*
4661 # lpfc_enable_bg: Enable BlockGuard (Emulex's Implementation of T10-DIF)
4662 #       0  = BlockGuard disabled (default)
4663 #       1  = BlockGuard enabled
4664 # Value range is [0,1]. Default value is 0.
4665 */
4666 LPFC_ATTR_R(enable_bg, 0, 0, 1, "Enable BlockGuard Support");
4667 
4668 /*
4669 # lpfc_fcp_look_ahead: Look ahead for completions in FCP start routine
4670 #       0  = disabled (default)
4671 #       1  = enabled
4672 # Value range is [0,1]. Default value is 0.
4673 #
4674 # This feature in under investigation and may be supported in the future.
4675 */
4676 unsigned int lpfc_fcp_look_ahead = LPFC_LOOK_AHEAD_OFF;
4677 
4678 /*
4679 # lpfc_prot_mask: i
4680 #	- Bit mask of host protection capabilities used to register with the
4681 #	  SCSI mid-layer
4682 # 	- Only meaningful if BG is turned on (lpfc_enable_bg=1).
4683 #	- Allows you to ultimately specify which profiles to use
4684 #	- Default will result in registering capabilities for all profiles.
4685 #	- SHOST_DIF_TYPE1_PROTECTION	1
4686 #		HBA supports T10 DIF Type 1: HBA to Target Type 1 Protection
4687 #	- SHOST_DIX_TYPE0_PROTECTION	8
4688 #		HBA supports DIX Type 0: Host to HBA protection only
4689 #	- SHOST_DIX_TYPE1_PROTECTION	16
4690 #		HBA supports DIX Type 1: Host to HBA  Type 1 protection
4691 #
4692 */
4693 unsigned int lpfc_prot_mask = SHOST_DIF_TYPE1_PROTECTION |
4694 			      SHOST_DIX_TYPE0_PROTECTION |
4695 			      SHOST_DIX_TYPE1_PROTECTION;
4696 
4697 module_param(lpfc_prot_mask, uint, S_IRUGO);
4698 MODULE_PARM_DESC(lpfc_prot_mask, "host protection mask");
4699 
4700 /*
4701 # lpfc_prot_guard: i
4702 #	- Bit mask of protection guard types to register with the SCSI mid-layer
4703 #	- Guard types are currently either 1) T10-DIF CRC 2) IP checksum
4704 #	- Allows you to ultimately specify which profiles to use
4705 #	- Default will result in registering capabilities for all guard types
4706 #
4707 */
4708 unsigned char lpfc_prot_guard = SHOST_DIX_GUARD_IP;
4709 module_param(lpfc_prot_guard, byte, S_IRUGO);
4710 MODULE_PARM_DESC(lpfc_prot_guard, "host protection guard type");
4711 
4712 /*
4713  * Delay initial NPort discovery when Clean Address bit is cleared in
4714  * FLOGI/FDISC accept and FCID/Fabric name/Fabric portname is changed.
4715  * This parameter can have value 0 or 1.
4716  * When this parameter is set to 0, no delay is added to the initial
4717  * discovery.
4718  * When this parameter is set to non-zero value, initial Nport discovery is
4719  * delayed by ra_tov seconds when Clean Address bit is cleared in FLOGI/FDISC
4720  * accept and FCID/Fabric name/Fabric portname is changed.
4721  * Driver always delay Nport discovery for subsequent FLOGI/FDISC completion
4722  * when Clean Address bit is cleared in FLOGI/FDISC
4723  * accept and FCID/Fabric name/Fabric portname is changed.
4724  * Default value is 0.
4725  */
4726 int lpfc_delay_discovery;
4727 module_param(lpfc_delay_discovery, int, S_IRUGO);
4728 MODULE_PARM_DESC(lpfc_delay_discovery,
4729 	"Delay NPort discovery when Clean Address bit is cleared. "
4730 	"Allowed values: 0,1.");
4731 
4732 /*
4733  * lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count
4734  * This value can be set to values between 64 and 4096. The default value is
4735  * 64, but may be increased to allow for larger Max I/O sizes. The scsi layer
4736  * will be allowed to request I/Os of sizes up to (MAX_SEG_COUNT * SEG_SIZE).
4737  * Because of the additional overhead involved in setting up T10-DIF,
4738  * this parameter will be limited to 128 if BlockGuard is enabled under SLI4
4739  * and will be limited to 512 if BlockGuard is enabled under SLI3.
4740  */
4741 LPFC_ATTR_R(sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, LPFC_DEFAULT_SG_SEG_CNT,
4742 	    LPFC_MAX_SG_SEG_CNT, "Max Scatter Gather Segment Count");
4743 
4744 /*
4745  * This parameter will be depricated, the driver cannot limit the
4746  * protection data s/g list.
4747  */
4748 LPFC_ATTR_R(prot_sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT,
4749 	    LPFC_DEFAULT_SG_SEG_CNT, LPFC_MAX_SG_SEG_CNT,
4750 	    "Max Protection Scatter Gather Segment Count");
4751 
4752 struct device_attribute *lpfc_hba_attrs[] = {
4753 	&dev_attr_bg_info,
4754 	&dev_attr_bg_guard_err,
4755 	&dev_attr_bg_apptag_err,
4756 	&dev_attr_bg_reftag_err,
4757 	&dev_attr_info,
4758 	&dev_attr_serialnum,
4759 	&dev_attr_modeldesc,
4760 	&dev_attr_modelname,
4761 	&dev_attr_programtype,
4762 	&dev_attr_portnum,
4763 	&dev_attr_fwrev,
4764 	&dev_attr_hdw,
4765 	&dev_attr_option_rom_version,
4766 	&dev_attr_link_state,
4767 	&dev_attr_num_discovered_ports,
4768 	&dev_attr_menlo_mgmt_mode,
4769 	&dev_attr_lpfc_drvr_version,
4770 	&dev_attr_lpfc_enable_fip,
4771 	&dev_attr_lpfc_temp_sensor,
4772 	&dev_attr_lpfc_log_verbose,
4773 	&dev_attr_lpfc_lun_queue_depth,
4774 	&dev_attr_lpfc_tgt_queue_depth,
4775 	&dev_attr_lpfc_hba_queue_depth,
4776 	&dev_attr_lpfc_peer_port_login,
4777 	&dev_attr_lpfc_nodev_tmo,
4778 	&dev_attr_lpfc_devloss_tmo,
4779 	&dev_attr_lpfc_fcp_class,
4780 	&dev_attr_lpfc_use_adisc,
4781 	&dev_attr_lpfc_first_burst_size,
4782 	&dev_attr_lpfc_ack0,
4783 	&dev_attr_lpfc_topology,
4784 	&dev_attr_lpfc_scan_down,
4785 	&dev_attr_lpfc_link_speed,
4786 	&dev_attr_lpfc_fcp_io_sched,
4787 	&dev_attr_lpfc_fcp2_no_tgt_reset,
4788 	&dev_attr_lpfc_cr_delay,
4789 	&dev_attr_lpfc_cr_count,
4790 	&dev_attr_lpfc_multi_ring_support,
4791 	&dev_attr_lpfc_multi_ring_rctl,
4792 	&dev_attr_lpfc_multi_ring_type,
4793 	&dev_attr_lpfc_fdmi_on,
4794 	&dev_attr_lpfc_max_luns,
4795 	&dev_attr_lpfc_enable_npiv,
4796 	&dev_attr_lpfc_fcf_failover_policy,
4797 	&dev_attr_lpfc_enable_rrq,
4798 	&dev_attr_nport_evt_cnt,
4799 	&dev_attr_board_mode,
4800 	&dev_attr_max_vpi,
4801 	&dev_attr_used_vpi,
4802 	&dev_attr_max_rpi,
4803 	&dev_attr_used_rpi,
4804 	&dev_attr_max_xri,
4805 	&dev_attr_used_xri,
4806 	&dev_attr_npiv_info,
4807 	&dev_attr_issue_reset,
4808 	&dev_attr_lpfc_poll,
4809 	&dev_attr_lpfc_poll_tmo,
4810 	&dev_attr_lpfc_task_mgmt_tmo,
4811 	&dev_attr_lpfc_use_msi,
4812 	&dev_attr_lpfc_fcp_imax,
4813 	&dev_attr_lpfc_fcp_cpu_map,
4814 	&dev_attr_lpfc_fcp_io_channel,
4815 	&dev_attr_lpfc_enable_bg,
4816 	&dev_attr_lpfc_soft_wwnn,
4817 	&dev_attr_lpfc_soft_wwpn,
4818 	&dev_attr_lpfc_soft_wwn_enable,
4819 	&dev_attr_lpfc_enable_hba_reset,
4820 	&dev_attr_lpfc_enable_hba_heartbeat,
4821 	&dev_attr_lpfc_EnableXLane,
4822 	&dev_attr_lpfc_XLanePriority,
4823 	&dev_attr_lpfc_xlane_lun,
4824 	&dev_attr_lpfc_xlane_tgt,
4825 	&dev_attr_lpfc_xlane_vpt,
4826 	&dev_attr_lpfc_xlane_lun_state,
4827 	&dev_attr_lpfc_xlane_lun_status,
4828 	&dev_attr_lpfc_sg_seg_cnt,
4829 	&dev_attr_lpfc_max_scsicmpl_time,
4830 	&dev_attr_lpfc_stat_data_ctrl,
4831 	&dev_attr_lpfc_prot_sg_seg_cnt,
4832 	&dev_attr_lpfc_aer_support,
4833 	&dev_attr_lpfc_aer_state_cleanup,
4834 	&dev_attr_lpfc_sriov_nr_virtfn,
4835 	&dev_attr_lpfc_req_fw_upgrade,
4836 	&dev_attr_lpfc_suppress_link_up,
4837 	&dev_attr_lpfc_iocb_cnt,
4838 	&dev_attr_iocb_hw,
4839 	&dev_attr_txq_hw,
4840 	&dev_attr_txcmplq_hw,
4841 	&dev_attr_lpfc_fips_level,
4842 	&dev_attr_lpfc_fips_rev,
4843 	&dev_attr_lpfc_dss,
4844 	&dev_attr_lpfc_sriov_hw_max_virtfn,
4845 	&dev_attr_protocol,
4846 	&dev_attr_lpfc_xlane_supported,
4847 	NULL,
4848 };
4849 
4850 struct device_attribute *lpfc_vport_attrs[] = {
4851 	&dev_attr_info,
4852 	&dev_attr_link_state,
4853 	&dev_attr_num_discovered_ports,
4854 	&dev_attr_lpfc_drvr_version,
4855 	&dev_attr_lpfc_log_verbose,
4856 	&dev_attr_lpfc_lun_queue_depth,
4857 	&dev_attr_lpfc_tgt_queue_depth,
4858 	&dev_attr_lpfc_nodev_tmo,
4859 	&dev_attr_lpfc_devloss_tmo,
4860 	&dev_attr_lpfc_hba_queue_depth,
4861 	&dev_attr_lpfc_peer_port_login,
4862 	&dev_attr_lpfc_restrict_login,
4863 	&dev_attr_lpfc_fcp_class,
4864 	&dev_attr_lpfc_use_adisc,
4865 	&dev_attr_lpfc_first_burst_size,
4866 	&dev_attr_lpfc_fdmi_on,
4867 	&dev_attr_lpfc_max_luns,
4868 	&dev_attr_nport_evt_cnt,
4869 	&dev_attr_npiv_info,
4870 	&dev_attr_lpfc_enable_da_id,
4871 	&dev_attr_lpfc_max_scsicmpl_time,
4872 	&dev_attr_lpfc_stat_data_ctrl,
4873 	&dev_attr_lpfc_static_vport,
4874 	&dev_attr_lpfc_fips_level,
4875 	&dev_attr_lpfc_fips_rev,
4876 	NULL,
4877 };
4878 
4879 /**
4880  * sysfs_ctlreg_write - Write method for writing to ctlreg
4881  * @filp: open sysfs file
4882  * @kobj: kernel kobject that contains the kernel class device.
4883  * @bin_attr: kernel attributes passed to us.
4884  * @buf: contains the data to be written to the adapter IOREG space.
4885  * @off: offset into buffer to beginning of data.
4886  * @count: bytes to transfer.
4887  *
4888  * Description:
4889  * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
4890  * Uses the adapter io control registers to send buf contents to the adapter.
4891  *
4892  * Returns:
4893  * -ERANGE off and count combo out of range
4894  * -EINVAL off, count or buff address invalid
4895  * -EPERM adapter is offline
4896  * value of count, buf contents written
4897  **/
4898 static ssize_t
4899 sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
4900 		   struct bin_attribute *bin_attr,
4901 		   char *buf, loff_t off, size_t count)
4902 {
4903 	size_t buf_off;
4904 	struct device *dev = container_of(kobj, struct device, kobj);
4905 	struct Scsi_Host  *shost = class_to_shost(dev);
4906 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4907 	struct lpfc_hba   *phba = vport->phba;
4908 
4909 	if (phba->sli_rev >= LPFC_SLI_REV4)
4910 		return -EPERM;
4911 
4912 	if ((off + count) > FF_REG_AREA_SIZE)
4913 		return -ERANGE;
4914 
4915 	if (count <= LPFC_REG_WRITE_KEY_SIZE)
4916 		return 0;
4917 
4918 	if (off % 4 || count % 4 || (unsigned long)buf % 4)
4919 		return -EINVAL;
4920 
4921 	/* This is to protect HBA registers from accidental writes. */
4922 	if (memcmp(buf, LPFC_REG_WRITE_KEY, LPFC_REG_WRITE_KEY_SIZE))
4923 		return -EINVAL;
4924 
4925 	if (!(vport->fc_flag & FC_OFFLINE_MODE))
4926 		return -EPERM;
4927 
4928 	spin_lock_irq(&phba->hbalock);
4929 	for (buf_off = 0; buf_off < count - LPFC_REG_WRITE_KEY_SIZE;
4930 			buf_off += sizeof(uint32_t))
4931 		writel(*((uint32_t *)(buf + buf_off + LPFC_REG_WRITE_KEY_SIZE)),
4932 		       phba->ctrl_regs_memmap_p + off + buf_off);
4933 
4934 	spin_unlock_irq(&phba->hbalock);
4935 
4936 	return count;
4937 }
4938 
4939 /**
4940  * sysfs_ctlreg_read - Read method for reading from ctlreg
4941  * @filp: open sysfs file
4942  * @kobj: kernel kobject that contains the kernel class device.
4943  * @bin_attr: kernel attributes passed to us.
4944  * @buf: if successful contains the data from the adapter IOREG space.
4945  * @off: offset into buffer to beginning of data.
4946  * @count: bytes to transfer.
4947  *
4948  * Description:
4949  * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
4950  * Uses the adapter io control registers to read data into buf.
4951  *
4952  * Returns:
4953  * -ERANGE off and count combo out of range
4954  * -EINVAL off, count or buff address invalid
4955  * value of count, buf contents read
4956  **/
4957 static ssize_t
4958 sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
4959 		  struct bin_attribute *bin_attr,
4960 		  char *buf, loff_t off, size_t count)
4961 {
4962 	size_t buf_off;
4963 	uint32_t * tmp_ptr;
4964 	struct device *dev = container_of(kobj, struct device, kobj);
4965 	struct Scsi_Host  *shost = class_to_shost(dev);
4966 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4967 	struct lpfc_hba   *phba = vport->phba;
4968 
4969 	if (phba->sli_rev >= LPFC_SLI_REV4)
4970 		return -EPERM;
4971 
4972 	if (off > FF_REG_AREA_SIZE)
4973 		return -ERANGE;
4974 
4975 	if ((off + count) > FF_REG_AREA_SIZE)
4976 		count = FF_REG_AREA_SIZE - off;
4977 
4978 	if (count == 0) return 0;
4979 
4980 	if (off % 4 || count % 4 || (unsigned long)buf % 4)
4981 		return -EINVAL;
4982 
4983 	spin_lock_irq(&phba->hbalock);
4984 
4985 	for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
4986 		tmp_ptr = (uint32_t *)(buf + buf_off);
4987 		*tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
4988 	}
4989 
4990 	spin_unlock_irq(&phba->hbalock);
4991 
4992 	return count;
4993 }
4994 
4995 static struct bin_attribute sysfs_ctlreg_attr = {
4996 	.attr = {
4997 		.name = "ctlreg",
4998 		.mode = S_IRUSR | S_IWUSR,
4999 	},
5000 	.size = 256,
5001 	.read = sysfs_ctlreg_read,
5002 	.write = sysfs_ctlreg_write,
5003 };
5004 
5005 /**
5006  * sysfs_mbox_write - Write method for writing information via mbox
5007  * @filp: open sysfs file
5008  * @kobj: kernel kobject that contains the kernel class device.
5009  * @bin_attr: kernel attributes passed to us.
5010  * @buf: contains the data to be written to sysfs mbox.
5011  * @off: offset into buffer to beginning of data.
5012  * @count: bytes to transfer.
5013  *
5014  * Description:
5015  * Deprecated function. All mailbox access from user space is performed via the
5016  * bsg interface.
5017  *
5018  * Returns:
5019  * -EPERM operation not permitted
5020  **/
5021 static ssize_t
5022 sysfs_mbox_write(struct file *filp, struct kobject *kobj,
5023 		 struct bin_attribute *bin_attr,
5024 		 char *buf, loff_t off, size_t count)
5025 {
5026 	return -EPERM;
5027 }
5028 
5029 /**
5030  * sysfs_mbox_read - Read method for reading information via mbox
5031  * @filp: open sysfs file
5032  * @kobj: kernel kobject that contains the kernel class device.
5033  * @bin_attr: kernel attributes passed to us.
5034  * @buf: contains the data to be read from sysfs mbox.
5035  * @off: offset into buffer to beginning of data.
5036  * @count: bytes to transfer.
5037  *
5038  * Description:
5039  * Deprecated function. All mailbox access from user space is performed via the
5040  * bsg interface.
5041  *
5042  * Returns:
5043  * -EPERM operation not permitted
5044  **/
5045 static ssize_t
5046 sysfs_mbox_read(struct file *filp, struct kobject *kobj,
5047 		struct bin_attribute *bin_attr,
5048 		char *buf, loff_t off, size_t count)
5049 {
5050 	return -EPERM;
5051 }
5052 
5053 static struct bin_attribute sysfs_mbox_attr = {
5054 	.attr = {
5055 		.name = "mbox",
5056 		.mode = S_IRUSR | S_IWUSR,
5057 	},
5058 	.size = MAILBOX_SYSFS_MAX,
5059 	.read = sysfs_mbox_read,
5060 	.write = sysfs_mbox_write,
5061 };
5062 
5063 /**
5064  * lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries
5065  * @vport: address of lpfc vport structure.
5066  *
5067  * Return codes:
5068  * zero on success
5069  * error return code from sysfs_create_bin_file()
5070  **/
5071 int
5072 lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
5073 {
5074 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5075 	int error;
5076 
5077 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5078 				      &sysfs_drvr_stat_data_attr);
5079 
5080 	/* Virtual ports do not need ctrl_reg and mbox */
5081 	if (error || vport->port_type == LPFC_NPIV_PORT)
5082 		goto out;
5083 
5084 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5085 				      &sysfs_ctlreg_attr);
5086 	if (error)
5087 		goto out_remove_stat_attr;
5088 
5089 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
5090 				      &sysfs_mbox_attr);
5091 	if (error)
5092 		goto out_remove_ctlreg_attr;
5093 
5094 	return 0;
5095 out_remove_ctlreg_attr:
5096 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
5097 out_remove_stat_attr:
5098 	sysfs_remove_bin_file(&shost->shost_dev.kobj,
5099 			&sysfs_drvr_stat_data_attr);
5100 out:
5101 	return error;
5102 }
5103 
5104 /**
5105  * lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries
5106  * @vport: address of lpfc vport structure.
5107  **/
5108 void
5109 lpfc_free_sysfs_attr(struct lpfc_vport *vport)
5110 {
5111 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5112 	sysfs_remove_bin_file(&shost->shost_dev.kobj,
5113 		&sysfs_drvr_stat_data_attr);
5114 	/* Virtual ports do not need ctrl_reg and mbox */
5115 	if (vport->port_type == LPFC_NPIV_PORT)
5116 		return;
5117 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_mbox_attr);
5118 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
5119 }
5120 
5121 
5122 /*
5123  * Dynamic FC Host Attributes Support
5124  */
5125 
5126 /**
5127  * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id
5128  * @shost: kernel scsi host pointer.
5129  **/
5130 static void
5131 lpfc_get_host_port_id(struct Scsi_Host *shost)
5132 {
5133 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5134 
5135 	/* note: fc_myDID already in cpu endianness */
5136 	fc_host_port_id(shost) = vport->fc_myDID;
5137 }
5138 
5139 /**
5140  * lpfc_get_host_port_type - Set the value of the scsi host port type
5141  * @shost: kernel scsi host pointer.
5142  **/
5143 static void
5144 lpfc_get_host_port_type(struct Scsi_Host *shost)
5145 {
5146 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5147 	struct lpfc_hba   *phba = vport->phba;
5148 
5149 	spin_lock_irq(shost->host_lock);
5150 
5151 	if (vport->port_type == LPFC_NPIV_PORT) {
5152 		fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
5153 	} else if (lpfc_is_link_up(phba)) {
5154 		if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
5155 			if (vport->fc_flag & FC_PUBLIC_LOOP)
5156 				fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
5157 			else
5158 				fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
5159 		} else {
5160 			if (vport->fc_flag & FC_FABRIC)
5161 				fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
5162 			else
5163 				fc_host_port_type(shost) = FC_PORTTYPE_PTP;
5164 		}
5165 	} else
5166 		fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
5167 
5168 	spin_unlock_irq(shost->host_lock);
5169 }
5170 
5171 /**
5172  * lpfc_get_host_port_state - Set the value of the scsi host port state
5173  * @shost: kernel scsi host pointer.
5174  **/
5175 static void
5176 lpfc_get_host_port_state(struct Scsi_Host *shost)
5177 {
5178 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5179 	struct lpfc_hba   *phba = vport->phba;
5180 
5181 	spin_lock_irq(shost->host_lock);
5182 
5183 	if (vport->fc_flag & FC_OFFLINE_MODE)
5184 		fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
5185 	else {
5186 		switch (phba->link_state) {
5187 		case LPFC_LINK_UNKNOWN:
5188 		case LPFC_LINK_DOWN:
5189 			fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
5190 			break;
5191 		case LPFC_LINK_UP:
5192 		case LPFC_CLEAR_LA:
5193 		case LPFC_HBA_READY:
5194 			/* Links up, reports port state accordingly */
5195 			if (vport->port_state < LPFC_VPORT_READY)
5196 				fc_host_port_state(shost) =
5197 							FC_PORTSTATE_BYPASSED;
5198 			else
5199 				fc_host_port_state(shost) =
5200 							FC_PORTSTATE_ONLINE;
5201 			break;
5202 		case LPFC_HBA_ERROR:
5203 			fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
5204 			break;
5205 		default:
5206 			fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
5207 			break;
5208 		}
5209 	}
5210 
5211 	spin_unlock_irq(shost->host_lock);
5212 }
5213 
5214 /**
5215  * lpfc_get_host_speed - Set the value of the scsi host speed
5216  * @shost: kernel scsi host pointer.
5217  **/
5218 static void
5219 lpfc_get_host_speed(struct Scsi_Host *shost)
5220 {
5221 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5222 	struct lpfc_hba   *phba = vport->phba;
5223 
5224 	spin_lock_irq(shost->host_lock);
5225 
5226 	if (lpfc_is_link_up(phba)) {
5227 		switch(phba->fc_linkspeed) {
5228 		case LPFC_LINK_SPEED_1GHZ:
5229 			fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
5230 			break;
5231 		case LPFC_LINK_SPEED_2GHZ:
5232 			fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
5233 			break;
5234 		case LPFC_LINK_SPEED_4GHZ:
5235 			fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
5236 			break;
5237 		case LPFC_LINK_SPEED_8GHZ:
5238 			fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
5239 			break;
5240 		case LPFC_LINK_SPEED_10GHZ:
5241 			fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
5242 			break;
5243 		case LPFC_LINK_SPEED_16GHZ:
5244 			fc_host_speed(shost) = FC_PORTSPEED_16GBIT;
5245 			break;
5246 		default:
5247 			fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
5248 			break;
5249 		}
5250 	} else
5251 		fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
5252 
5253 	spin_unlock_irq(shost->host_lock);
5254 }
5255 
5256 /**
5257  * lpfc_get_host_fabric_name - Set the value of the scsi host fabric name
5258  * @shost: kernel scsi host pointer.
5259  **/
5260 static void
5261 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
5262 {
5263 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5264 	struct lpfc_hba   *phba = vport->phba;
5265 	u64 node_name;
5266 
5267 	spin_lock_irq(shost->host_lock);
5268 
5269 	if ((vport->port_state > LPFC_FLOGI) &&
5270 	    ((vport->fc_flag & FC_FABRIC) ||
5271 	     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
5272 	      (vport->fc_flag & FC_PUBLIC_LOOP))))
5273 		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
5274 	else
5275 		/* fabric is local port if there is no F/FL_Port */
5276 		node_name = 0;
5277 
5278 	spin_unlock_irq(shost->host_lock);
5279 
5280 	fc_host_fabric_name(shost) = node_name;
5281 }
5282 
5283 /**
5284  * lpfc_get_stats - Return statistical information about the adapter
5285  * @shost: kernel scsi host pointer.
5286  *
5287  * Notes:
5288  * NULL on error for link down, no mbox pool, sli2 active,
5289  * management not allowed, memory allocation error, or mbox error.
5290  *
5291  * Returns:
5292  * NULL for error
5293  * address of the adapter host statistics
5294  **/
5295 static struct fc_host_statistics *
5296 lpfc_get_stats(struct Scsi_Host *shost)
5297 {
5298 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5299 	struct lpfc_hba   *phba = vport->phba;
5300 	struct lpfc_sli   *psli = &phba->sli;
5301 	struct fc_host_statistics *hs = &phba->link_stats;
5302 	struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
5303 	LPFC_MBOXQ_t *pmboxq;
5304 	MAILBOX_t *pmb;
5305 	unsigned long seconds;
5306 	int rc = 0;
5307 
5308 	/*
5309 	 * prevent udev from issuing mailbox commands until the port is
5310 	 * configured.
5311 	 */
5312 	if (phba->link_state < LPFC_LINK_DOWN ||
5313 	    !phba->mbox_mem_pool ||
5314 	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
5315 		return NULL;
5316 
5317 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
5318 		return NULL;
5319 
5320 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5321 	if (!pmboxq)
5322 		return NULL;
5323 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
5324 
5325 	pmb = &pmboxq->u.mb;
5326 	pmb->mbxCommand = MBX_READ_STATUS;
5327 	pmb->mbxOwner = OWN_HOST;
5328 	pmboxq->context1 = NULL;
5329 	pmboxq->vport = vport;
5330 
5331 	if (vport->fc_flag & FC_OFFLINE_MODE)
5332 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5333 	else
5334 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
5335 
5336 	if (rc != MBX_SUCCESS) {
5337 		if (rc != MBX_TIMEOUT)
5338 			mempool_free(pmboxq, phba->mbox_mem_pool);
5339 		return NULL;
5340 	}
5341 
5342 	memset(hs, 0, sizeof (struct fc_host_statistics));
5343 
5344 	hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
5345 	/*
5346 	 * The MBX_READ_STATUS returns tx_k_bytes which has to
5347 	 * converted to words
5348 	 */
5349 	hs->tx_words = (uint64_t)
5350 			((uint64_t)pmb->un.varRdStatus.xmitByteCnt
5351 			* (uint64_t)256);
5352 	hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
5353 	hs->rx_words = (uint64_t)
5354 			((uint64_t)pmb->un.varRdStatus.rcvByteCnt
5355 			 * (uint64_t)256);
5356 
5357 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
5358 	pmb->mbxCommand = MBX_READ_LNK_STAT;
5359 	pmb->mbxOwner = OWN_HOST;
5360 	pmboxq->context1 = NULL;
5361 	pmboxq->vport = vport;
5362 
5363 	if (vport->fc_flag & FC_OFFLINE_MODE)
5364 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5365 	else
5366 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
5367 
5368 	if (rc != MBX_SUCCESS) {
5369 		if (rc != MBX_TIMEOUT)
5370 			mempool_free(pmboxq, phba->mbox_mem_pool);
5371 		return NULL;
5372 	}
5373 
5374 	hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
5375 	hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
5376 	hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
5377 	hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
5378 	hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
5379 	hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
5380 	hs->error_frames = pmb->un.varRdLnk.crcCnt;
5381 
5382 	hs->link_failure_count -= lso->link_failure_count;
5383 	hs->loss_of_sync_count -= lso->loss_of_sync_count;
5384 	hs->loss_of_signal_count -= lso->loss_of_signal_count;
5385 	hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
5386 	hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
5387 	hs->invalid_crc_count -= lso->invalid_crc_count;
5388 	hs->error_frames -= lso->error_frames;
5389 
5390 	if (phba->hba_flag & HBA_FCOE_MODE) {
5391 		hs->lip_count = -1;
5392 		hs->nos_count = (phba->link_events >> 1);
5393 		hs->nos_count -= lso->link_events;
5394 	} else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
5395 		hs->lip_count = (phba->fc_eventTag >> 1);
5396 		hs->lip_count -= lso->link_events;
5397 		hs->nos_count = -1;
5398 	} else {
5399 		hs->lip_count = -1;
5400 		hs->nos_count = (phba->fc_eventTag >> 1);
5401 		hs->nos_count -= lso->link_events;
5402 	}
5403 
5404 	hs->dumped_frames = -1;
5405 
5406 	seconds = get_seconds();
5407 	if (seconds < psli->stats_start)
5408 		hs->seconds_since_last_reset = seconds +
5409 				((unsigned long)-1 - psli->stats_start);
5410 	else
5411 		hs->seconds_since_last_reset = seconds - psli->stats_start;
5412 
5413 	mempool_free(pmboxq, phba->mbox_mem_pool);
5414 
5415 	return hs;
5416 }
5417 
5418 /**
5419  * lpfc_reset_stats - Copy the adapter link stats information
5420  * @shost: kernel scsi host pointer.
5421  **/
5422 static void
5423 lpfc_reset_stats(struct Scsi_Host *shost)
5424 {
5425 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5426 	struct lpfc_hba   *phba = vport->phba;
5427 	struct lpfc_sli   *psli = &phba->sli;
5428 	struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets;
5429 	LPFC_MBOXQ_t *pmboxq;
5430 	MAILBOX_t *pmb;
5431 	int rc = 0;
5432 
5433 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
5434 		return;
5435 
5436 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5437 	if (!pmboxq)
5438 		return;
5439 	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
5440 
5441 	pmb = &pmboxq->u.mb;
5442 	pmb->mbxCommand = MBX_READ_STATUS;
5443 	pmb->mbxOwner = OWN_HOST;
5444 	pmb->un.varWords[0] = 0x1; /* reset request */
5445 	pmboxq->context1 = NULL;
5446 	pmboxq->vport = vport;
5447 
5448 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
5449 		(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
5450 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5451 	else
5452 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
5453 
5454 	if (rc != MBX_SUCCESS) {
5455 		if (rc != MBX_TIMEOUT)
5456 			mempool_free(pmboxq, phba->mbox_mem_pool);
5457 		return;
5458 	}
5459 
5460 	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
5461 	pmb->mbxCommand = MBX_READ_LNK_STAT;
5462 	pmb->mbxOwner = OWN_HOST;
5463 	pmboxq->context1 = NULL;
5464 	pmboxq->vport = vport;
5465 
5466 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
5467 	    (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
5468 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
5469 	else
5470 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
5471 
5472 	if (rc != MBX_SUCCESS) {
5473 		if (rc != MBX_TIMEOUT)
5474 			mempool_free( pmboxq, phba->mbox_mem_pool);
5475 		return;
5476 	}
5477 
5478 	lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
5479 	lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
5480 	lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
5481 	lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
5482 	lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
5483 	lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
5484 	lso->error_frames = pmb->un.varRdLnk.crcCnt;
5485 	if (phba->hba_flag & HBA_FCOE_MODE)
5486 		lso->link_events = (phba->link_events >> 1);
5487 	else
5488 		lso->link_events = (phba->fc_eventTag >> 1);
5489 
5490 	psli->stats_start = get_seconds();
5491 
5492 	mempool_free(pmboxq, phba->mbox_mem_pool);
5493 
5494 	return;
5495 }
5496 
5497 /*
5498  * The LPFC driver treats linkdown handling as target loss events so there
5499  * are no sysfs handlers for link_down_tmo.
5500  */
5501 
5502 /**
5503  * lpfc_get_node_by_target - Return the nodelist for a target
5504  * @starget: kernel scsi target pointer.
5505  *
5506  * Returns:
5507  * address of the node list if found
5508  * NULL target not found
5509  **/
5510 static struct lpfc_nodelist *
5511 lpfc_get_node_by_target(struct scsi_target *starget)
5512 {
5513 	struct Scsi_Host  *shost = dev_to_shost(starget->dev.parent);
5514 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
5515 	struct lpfc_nodelist *ndlp;
5516 
5517 	spin_lock_irq(shost->host_lock);
5518 	/* Search for this, mapped, target ID */
5519 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
5520 		if (NLP_CHK_NODE_ACT(ndlp) &&
5521 		    ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
5522 		    starget->id == ndlp->nlp_sid) {
5523 			spin_unlock_irq(shost->host_lock);
5524 			return ndlp;
5525 		}
5526 	}
5527 	spin_unlock_irq(shost->host_lock);
5528 	return NULL;
5529 }
5530 
5531 /**
5532  * lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1
5533  * @starget: kernel scsi target pointer.
5534  **/
5535 static void
5536 lpfc_get_starget_port_id(struct scsi_target *starget)
5537 {
5538 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
5539 
5540 	fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1;
5541 }
5542 
5543 /**
5544  * lpfc_get_starget_node_name - Set the target node name
5545  * @starget: kernel scsi target pointer.
5546  *
5547  * Description: Set the target node name to the ndlp node name wwn or zero.
5548  **/
5549 static void
5550 lpfc_get_starget_node_name(struct scsi_target *starget)
5551 {
5552 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
5553 
5554 	fc_starget_node_name(starget) =
5555 		ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
5556 }
5557 
5558 /**
5559  * lpfc_get_starget_port_name - Set the target port name
5560  * @starget: kernel scsi target pointer.
5561  *
5562  * Description:  set the target port name to the ndlp port name wwn or zero.
5563  **/
5564 static void
5565 lpfc_get_starget_port_name(struct scsi_target *starget)
5566 {
5567 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
5568 
5569 	fc_starget_port_name(starget) =
5570 		ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
5571 }
5572 
5573 /**
5574  * lpfc_set_rport_loss_tmo - Set the rport dev loss tmo
5575  * @rport: fc rport address.
5576  * @timeout: new value for dev loss tmo.
5577  *
5578  * Description:
5579  * If timeout is non zero set the dev_loss_tmo to timeout, else set
5580  * dev_loss_tmo to one.
5581  **/
5582 static void
5583 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
5584 {
5585 	if (timeout)
5586 		rport->dev_loss_tmo = timeout;
5587 	else
5588 		rport->dev_loss_tmo = 1;
5589 }
5590 
5591 /**
5592  * lpfc_rport_show_function - Return rport target information
5593  *
5594  * Description:
5595  * Macro that uses field to generate a function with the name lpfc_show_rport_
5596  *
5597  * lpfc_show_rport_##field: returns the bytes formatted in buf
5598  * @cdev: class converted to an fc_rport.
5599  * @buf: on return contains the target_field or zero.
5600  *
5601  * Returns: size of formatted string.
5602  **/
5603 #define lpfc_rport_show_function(field, format_string, sz, cast)	\
5604 static ssize_t								\
5605 lpfc_show_rport_##field (struct device *dev,				\
5606 			 struct device_attribute *attr,			\
5607 			 char *buf)					\
5608 {									\
5609 	struct fc_rport *rport = transport_class_to_rport(dev);		\
5610 	struct lpfc_rport_data *rdata = rport->hostdata;		\
5611 	return snprintf(buf, sz, format_string,				\
5612 		(rdata->target) ? cast rdata->target->field : 0);	\
5613 }
5614 
5615 #define lpfc_rport_rd_attr(field, format_string, sz)			\
5616 	lpfc_rport_show_function(field, format_string, sz, )		\
5617 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)
5618 
5619 /**
5620  * lpfc_set_vport_symbolic_name - Set the vport's symbolic name
5621  * @fc_vport: The fc_vport who's symbolic name has been changed.
5622  *
5623  * Description:
5624  * This function is called by the transport after the @fc_vport's symbolic name
5625  * has been changed. This function re-registers the symbolic name with the
5626  * switch to propagate the change into the fabric if the vport is active.
5627  **/
5628 static void
5629 lpfc_set_vport_symbolic_name(struct fc_vport *fc_vport)
5630 {
5631 	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
5632 
5633 	if (vport->port_state == LPFC_VPORT_READY)
5634 		lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
5635 }
5636 
5637 /**
5638  * lpfc_hba_log_verbose_init - Set hba's log verbose level
5639  * @phba: Pointer to lpfc_hba struct.
5640  *
5641  * This function is called by the lpfc_get_cfgparam() routine to set the
5642  * module lpfc_log_verbose into the @phba cfg_log_verbose for use with
5643  * log message according to the module's lpfc_log_verbose parameter setting
5644  * before hba port or vport created.
5645  **/
5646 static void
5647 lpfc_hba_log_verbose_init(struct lpfc_hba *phba, uint32_t verbose)
5648 {
5649 	phba->cfg_log_verbose = verbose;
5650 }
5651 
5652 struct fc_function_template lpfc_transport_functions = {
5653 	/* fixed attributes the driver supports */
5654 	.show_host_node_name = 1,
5655 	.show_host_port_name = 1,
5656 	.show_host_supported_classes = 1,
5657 	.show_host_supported_fc4s = 1,
5658 	.show_host_supported_speeds = 1,
5659 	.show_host_maxframe_size = 1,
5660 	.show_host_symbolic_name = 1,
5661 
5662 	/* dynamic attributes the driver supports */
5663 	.get_host_port_id = lpfc_get_host_port_id,
5664 	.show_host_port_id = 1,
5665 
5666 	.get_host_port_type = lpfc_get_host_port_type,
5667 	.show_host_port_type = 1,
5668 
5669 	.get_host_port_state = lpfc_get_host_port_state,
5670 	.show_host_port_state = 1,
5671 
5672 	/* active_fc4s is shown but doesn't change (thus no get function) */
5673 	.show_host_active_fc4s = 1,
5674 
5675 	.get_host_speed = lpfc_get_host_speed,
5676 	.show_host_speed = 1,
5677 
5678 	.get_host_fabric_name = lpfc_get_host_fabric_name,
5679 	.show_host_fabric_name = 1,
5680 
5681 	/*
5682 	 * The LPFC driver treats linkdown handling as target loss events
5683 	 * so there are no sysfs handlers for link_down_tmo.
5684 	 */
5685 
5686 	.get_fc_host_stats = lpfc_get_stats,
5687 	.reset_fc_host_stats = lpfc_reset_stats,
5688 
5689 	.dd_fcrport_size = sizeof(struct lpfc_rport_data),
5690 	.show_rport_maxframe_size = 1,
5691 	.show_rport_supported_classes = 1,
5692 
5693 	.set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
5694 	.show_rport_dev_loss_tmo = 1,
5695 
5696 	.get_starget_port_id  = lpfc_get_starget_port_id,
5697 	.show_starget_port_id = 1,
5698 
5699 	.get_starget_node_name = lpfc_get_starget_node_name,
5700 	.show_starget_node_name = 1,
5701 
5702 	.get_starget_port_name = lpfc_get_starget_port_name,
5703 	.show_starget_port_name = 1,
5704 
5705 	.issue_fc_host_lip = lpfc_issue_lip,
5706 	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
5707 	.terminate_rport_io = lpfc_terminate_rport_io,
5708 
5709 	.dd_fcvport_size = sizeof(struct lpfc_vport *),
5710 
5711 	.vport_disable = lpfc_vport_disable,
5712 
5713 	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
5714 
5715 	.bsg_request = lpfc_bsg_request,
5716 	.bsg_timeout = lpfc_bsg_timeout,
5717 };
5718 
5719 struct fc_function_template lpfc_vport_transport_functions = {
5720 	/* fixed attributes the driver supports */
5721 	.show_host_node_name = 1,
5722 	.show_host_port_name = 1,
5723 	.show_host_supported_classes = 1,
5724 	.show_host_supported_fc4s = 1,
5725 	.show_host_supported_speeds = 1,
5726 	.show_host_maxframe_size = 1,
5727 	.show_host_symbolic_name = 1,
5728 
5729 	/* dynamic attributes the driver supports */
5730 	.get_host_port_id = lpfc_get_host_port_id,
5731 	.show_host_port_id = 1,
5732 
5733 	.get_host_port_type = lpfc_get_host_port_type,
5734 	.show_host_port_type = 1,
5735 
5736 	.get_host_port_state = lpfc_get_host_port_state,
5737 	.show_host_port_state = 1,
5738 
5739 	/* active_fc4s is shown but doesn't change (thus no get function) */
5740 	.show_host_active_fc4s = 1,
5741 
5742 	.get_host_speed = lpfc_get_host_speed,
5743 	.show_host_speed = 1,
5744 
5745 	.get_host_fabric_name = lpfc_get_host_fabric_name,
5746 	.show_host_fabric_name = 1,
5747 
5748 	/*
5749 	 * The LPFC driver treats linkdown handling as target loss events
5750 	 * so there are no sysfs handlers for link_down_tmo.
5751 	 */
5752 
5753 	.get_fc_host_stats = lpfc_get_stats,
5754 	.reset_fc_host_stats = lpfc_reset_stats,
5755 
5756 	.dd_fcrport_size = sizeof(struct lpfc_rport_data),
5757 	.show_rport_maxframe_size = 1,
5758 	.show_rport_supported_classes = 1,
5759 
5760 	.set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
5761 	.show_rport_dev_loss_tmo = 1,
5762 
5763 	.get_starget_port_id  = lpfc_get_starget_port_id,
5764 	.show_starget_port_id = 1,
5765 
5766 	.get_starget_node_name = lpfc_get_starget_node_name,
5767 	.show_starget_node_name = 1,
5768 
5769 	.get_starget_port_name = lpfc_get_starget_port_name,
5770 	.show_starget_port_name = 1,
5771 
5772 	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
5773 	.terminate_rport_io = lpfc_terminate_rport_io,
5774 
5775 	.vport_disable = lpfc_vport_disable,
5776 
5777 	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
5778 };
5779 
5780 /**
5781  * lpfc_get_cfgparam - Used during probe_one to init the adapter structure
5782  * @phba: lpfc_hba pointer.
5783  **/
5784 void
5785 lpfc_get_cfgparam(struct lpfc_hba *phba)
5786 {
5787 	lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched);
5788 	lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset);
5789 	lpfc_cr_delay_init(phba, lpfc_cr_delay);
5790 	lpfc_cr_count_init(phba, lpfc_cr_count);
5791 	lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
5792 	lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
5793 	lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
5794 	lpfc_ack0_init(phba, lpfc_ack0);
5795 	lpfc_topology_init(phba, lpfc_topology);
5796 	lpfc_link_speed_init(phba, lpfc_link_speed);
5797 	lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
5798 	lpfc_task_mgmt_tmo_init(phba, lpfc_task_mgmt_tmo);
5799 	lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
5800 	lpfc_fcf_failover_policy_init(phba, lpfc_fcf_failover_policy);
5801 	lpfc_enable_rrq_init(phba, lpfc_enable_rrq);
5802 	lpfc_use_msi_init(phba, lpfc_use_msi);
5803 	lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
5804 	lpfc_fcp_cpu_map_init(phba, lpfc_fcp_cpu_map);
5805 	lpfc_fcp_io_channel_init(phba, lpfc_fcp_io_channel);
5806 	lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
5807 	lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
5808 	lpfc_EnableXLane_init(phba, lpfc_EnableXLane);
5809 	if (phba->sli_rev != LPFC_SLI_REV4)
5810 		phba->cfg_EnableXLane = 0;
5811 	lpfc_XLanePriority_init(phba, lpfc_XLanePriority);
5812 	memset(phba->cfg_oas_tgt_wwpn, 0, (8 * sizeof(uint8_t)));
5813 	memset(phba->cfg_oas_vpt_wwpn, 0, (8 * sizeof(uint8_t)));
5814 	phba->cfg_oas_lun_state = 0;
5815 	phba->cfg_oas_lun_status = 0;
5816 	phba->cfg_oas_flags = 0;
5817 	lpfc_enable_bg_init(phba, lpfc_enable_bg);
5818 	if (phba->sli_rev == LPFC_SLI_REV4)
5819 		phba->cfg_poll = 0;
5820 	else
5821 		phba->cfg_poll = lpfc_poll;
5822 	phba->cfg_soft_wwnn = 0L;
5823 	phba->cfg_soft_wwpn = 0L;
5824 	lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
5825 	lpfc_prot_sg_seg_cnt_init(phba, lpfc_prot_sg_seg_cnt);
5826 	lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
5827 	lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);
5828 	lpfc_aer_support_init(phba, lpfc_aer_support);
5829 	lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn);
5830 	lpfc_request_firmware_upgrade_init(phba, lpfc_req_fw_upgrade);
5831 	lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
5832 	lpfc_iocb_cnt_init(phba, lpfc_iocb_cnt);
5833 	phba->cfg_enable_dss = 1;
5834 	return;
5835 }
5836 
5837 /**
5838  * lpfc_get_vport_cfgparam - Used during port create, init the vport structure
5839  * @vport: lpfc_vport pointer.
5840  **/
5841 void
5842 lpfc_get_vport_cfgparam(struct lpfc_vport *vport)
5843 {
5844 	lpfc_log_verbose_init(vport, lpfc_log_verbose);
5845 	lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth);
5846 	lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth);
5847 	lpfc_devloss_tmo_init(vport, lpfc_devloss_tmo);
5848 	lpfc_nodev_tmo_init(vport, lpfc_nodev_tmo);
5849 	lpfc_peer_port_login_init(vport, lpfc_peer_port_login);
5850 	lpfc_restrict_login_init(vport, lpfc_restrict_login);
5851 	lpfc_fcp_class_init(vport, lpfc_fcp_class);
5852 	lpfc_use_adisc_init(vport, lpfc_use_adisc);
5853 	lpfc_first_burst_size_init(vport, lpfc_first_burst_size);
5854 	lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time);
5855 	lpfc_fdmi_on_init(vport, lpfc_fdmi_on);
5856 	lpfc_discovery_threads_init(vport, lpfc_discovery_threads);
5857 	lpfc_max_luns_init(vport, lpfc_max_luns);
5858 	lpfc_scan_down_init(vport, lpfc_scan_down);
5859 	lpfc_enable_da_id_init(vport, lpfc_enable_da_id);
5860 	return;
5861 }
5862