xref: /linux/drivers/scsi/lpfc/lpfc_attr.c (revision e6f2a617ac53bc0753b885ffb94379ff48b2e2df)
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Fibre Channel Host Bus Adapters.                                *
4  * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term *
5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.  *
6  * Copyright (C) 2004-2016 Emulex.  All rights reserved.           *
7  * EMULEX and SLI are trademarks of Emulex.                        *
8  * www.broadcom.com                                                *
9  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
10  *                                                                 *
11  * This program is free software; you can redistribute it and/or   *
12  * modify it under the terms of version 2 of the GNU General       *
13  * Public License as published by the Free Software Foundation.    *
14  * This program is distributed in the hope that it will be useful. *
15  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
16  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
17  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
18  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
19  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
20  * more details, a copy of which can be found in the file COPYING  *
21  * included with this package.                                     *
22  *******************************************************************/
23 
24 #include <linux/ctype.h>
25 #include <linux/delay.h>
26 #include <linux/pci.h>
27 #include <linux/interrupt.h>
28 #include <linux/module.h>
29 #include <linux/aer.h>
30 #include <linux/gfp.h>
31 #include <linux/kernel.h>
32 
33 #include <scsi/scsi.h>
34 #include <scsi/scsi_device.h>
35 #include <scsi/scsi_host.h>
36 #include <scsi/scsi_tcq.h>
37 #include <scsi/scsi_transport_fc.h>
38 #include <scsi/fc/fc_fs.h>
39 
40 #include <linux/nvme-fc-driver.h>
41 
42 #include "lpfc_hw4.h"
43 #include "lpfc_hw.h"
44 #include "lpfc_sli.h"
45 #include "lpfc_sli4.h"
46 #include "lpfc_nl.h"
47 #include "lpfc_disc.h"
48 #include "lpfc.h"
49 #include "lpfc_scsi.h"
50 #include "lpfc_nvme.h"
51 #include "lpfc_nvmet.h"
52 #include "lpfc_logmsg.h"
53 #include "lpfc_version.h"
54 #include "lpfc_compat.h"
55 #include "lpfc_crtn.h"
56 #include "lpfc_vport.h"
57 #include "lpfc_attr.h"
58 
59 #define LPFC_DEF_DEVLOSS_TMO	30
60 #define LPFC_MIN_DEVLOSS_TMO	1
61 #define LPFC_MAX_DEVLOSS_TMO	255
62 
63 #define LPFC_DEF_MRQ_POST	512
64 #define LPFC_MIN_MRQ_POST	512
65 #define LPFC_MAX_MRQ_POST	2048
66 
67 /*
68  * Write key size should be multiple of 4. If write key is changed
69  * make sure that library write key is also changed.
70  */
71 #define LPFC_REG_WRITE_KEY_SIZE	4
72 #define LPFC_REG_WRITE_KEY	"EMLX"
73 
74 const char *const trunk_errmsg[] = {	/* map errcode */
75 	"",	/* There is no such error code at index 0*/
76 	"link negotiated speed does not match existing"
77 		" trunk - link was \"low\" speed",
78 	"link negotiated speed does not match"
79 		" existing trunk - link was \"middle\" speed",
80 	"link negotiated speed does not match existing"
81 		" trunk - link was \"high\" speed",
82 	"Attached to non-trunking port - F_Port",
83 	"Attached to non-trunking port - N_Port",
84 	"FLOGI response timeout",
85 	"non-FLOGI frame received",
86 	"Invalid FLOGI response",
87 	"Trunking initialization protocol",
88 	"Trunk peer device mismatch",
89 };
90 
91 /**
92  * lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules
93  * @incr: integer to convert.
94  * @hdw: ascii string holding converted integer plus a string terminator.
95  *
96  * Description:
97  * JEDEC Joint Electron Device Engineering Council.
98  * Convert a 32 bit integer composed of 8 nibbles into an 8 byte ascii
99  * character string. The string is then terminated with a NULL in byte 9.
100  * Hex 0-9 becomes ascii '0' to '9'.
101  * Hex a-f becomes ascii '=' to 'B' capital B.
102  *
103  * Notes:
104  * Coded for 32 bit integers only.
105  **/
106 static void
107 lpfc_jedec_to_ascii(int incr, char hdw[])
108 {
109 	int i, j;
110 	for (i = 0; i < 8; i++) {
111 		j = (incr & 0xf);
112 		if (j <= 9)
113 			hdw[7 - i] = 0x30 +  j;
114 		 else
115 			hdw[7 - i] = 0x61 + j - 10;
116 		incr = (incr >> 4);
117 	}
118 	hdw[8] = 0;
119 	return;
120 }
121 
122 /**
123  * lpfc_drvr_version_show - Return the Emulex driver string with version number
124  * @dev: class unused variable.
125  * @attr: device attribute, not used.
126  * @buf: on return contains the module description text.
127  *
128  * Returns: size of formatted string.
129  **/
130 static ssize_t
131 lpfc_drvr_version_show(struct device *dev, struct device_attribute *attr,
132 		       char *buf)
133 {
134 	return scnprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
135 }
136 
137 /**
138  * lpfc_enable_fip_show - Return the fip mode of the HBA
139  * @dev: class unused variable.
140  * @attr: device attribute, not used.
141  * @buf: on return contains the module description text.
142  *
143  * Returns: size of formatted string.
144  **/
145 static ssize_t
146 lpfc_enable_fip_show(struct device *dev, struct device_attribute *attr,
147 		       char *buf)
148 {
149 	struct Scsi_Host *shost = class_to_shost(dev);
150 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
151 	struct lpfc_hba   *phba = vport->phba;
152 
153 	if (phba->hba_flag & HBA_FIP_SUPPORT)
154 		return scnprintf(buf, PAGE_SIZE, "1\n");
155 	else
156 		return scnprintf(buf, PAGE_SIZE, "0\n");
157 }
158 
159 static ssize_t
160 lpfc_nvme_info_show(struct device *dev, struct device_attribute *attr,
161 		    char *buf)
162 {
163 	struct Scsi_Host *shost = class_to_shost(dev);
164 	struct lpfc_vport *vport = shost_priv(shost);
165 	struct lpfc_hba   *phba = vport->phba;
166 	struct lpfc_nvmet_tgtport *tgtp;
167 	struct nvme_fc_local_port *localport;
168 	struct lpfc_nvme_lport *lport;
169 	struct lpfc_nvme_rport *rport;
170 	struct lpfc_nodelist *ndlp;
171 	struct nvme_fc_remote_port *nrport;
172 	struct lpfc_fc4_ctrl_stat *cstat;
173 	uint64_t data1, data2, data3;
174 	uint64_t totin, totout, tot;
175 	char *statep;
176 	int i;
177 	int len = 0;
178 	char tmp[LPFC_MAX_NVME_INFO_TMP_LEN] = {0};
179 
180 	if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
181 		len = scnprintf(buf, PAGE_SIZE, "NVME Disabled\n");
182 		return len;
183 	}
184 	if (phba->nvmet_support) {
185 		if (!phba->targetport) {
186 			len = scnprintf(buf, PAGE_SIZE,
187 					"NVME Target: x%llx is not allocated\n",
188 					wwn_to_u64(vport->fc_portname.u.wwn));
189 			return len;
190 		}
191 		/* Port state is only one of two values for now. */
192 		if (phba->targetport->port_id)
193 			statep = "REGISTERED";
194 		else
195 			statep = "INIT";
196 		scnprintf(tmp, sizeof(tmp),
197 			  "NVME Target Enabled  State %s\n",
198 			  statep);
199 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
200 			goto buffer_done;
201 
202 		scnprintf(tmp, sizeof(tmp),
203 			  "%s%d WWPN x%llx WWNN x%llx DID x%06x\n",
204 			  "NVME Target: lpfc",
205 			  phba->brd_no,
206 			  wwn_to_u64(vport->fc_portname.u.wwn),
207 			  wwn_to_u64(vport->fc_nodename.u.wwn),
208 			  phba->targetport->port_id);
209 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
210 			goto buffer_done;
211 
212 		if (strlcat(buf, "\nNVME Target: Statistics\n", PAGE_SIZE)
213 		    >= PAGE_SIZE)
214 			goto buffer_done;
215 
216 		tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
217 		scnprintf(tmp, sizeof(tmp),
218 			  "LS: Rcv %08x Drop %08x Abort %08x\n",
219 			  atomic_read(&tgtp->rcv_ls_req_in),
220 			  atomic_read(&tgtp->rcv_ls_req_drop),
221 			  atomic_read(&tgtp->xmt_ls_abort));
222 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
223 			goto buffer_done;
224 
225 		if (atomic_read(&tgtp->rcv_ls_req_in) !=
226 		    atomic_read(&tgtp->rcv_ls_req_out)) {
227 			scnprintf(tmp, sizeof(tmp),
228 				  "Rcv LS: in %08x != out %08x\n",
229 				  atomic_read(&tgtp->rcv_ls_req_in),
230 				  atomic_read(&tgtp->rcv_ls_req_out));
231 			if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
232 				goto buffer_done;
233 		}
234 
235 		scnprintf(tmp, sizeof(tmp),
236 			  "LS: Xmt %08x Drop %08x Cmpl %08x\n",
237 			  atomic_read(&tgtp->xmt_ls_rsp),
238 			  atomic_read(&tgtp->xmt_ls_drop),
239 			  atomic_read(&tgtp->xmt_ls_rsp_cmpl));
240 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
241 			goto buffer_done;
242 
243 		scnprintf(tmp, sizeof(tmp),
244 			  "LS: RSP Abort %08x xb %08x Err %08x\n",
245 			  atomic_read(&tgtp->xmt_ls_rsp_aborted),
246 			  atomic_read(&tgtp->xmt_ls_rsp_xb_set),
247 			  atomic_read(&tgtp->xmt_ls_rsp_error));
248 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
249 			goto buffer_done;
250 
251 		scnprintf(tmp, sizeof(tmp),
252 			  "FCP: Rcv %08x Defer %08x Release %08x "
253 			  "Drop %08x\n",
254 			  atomic_read(&tgtp->rcv_fcp_cmd_in),
255 			  atomic_read(&tgtp->rcv_fcp_cmd_defer),
256 			  atomic_read(&tgtp->xmt_fcp_release),
257 			  atomic_read(&tgtp->rcv_fcp_cmd_drop));
258 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
259 			goto buffer_done;
260 
261 		if (atomic_read(&tgtp->rcv_fcp_cmd_in) !=
262 		    atomic_read(&tgtp->rcv_fcp_cmd_out)) {
263 			scnprintf(tmp, sizeof(tmp),
264 				  "Rcv FCP: in %08x != out %08x\n",
265 				  atomic_read(&tgtp->rcv_fcp_cmd_in),
266 				  atomic_read(&tgtp->rcv_fcp_cmd_out));
267 			if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
268 				goto buffer_done;
269 		}
270 
271 		scnprintf(tmp, sizeof(tmp),
272 			  "FCP Rsp: RD %08x rsp %08x WR %08x rsp %08x "
273 			  "drop %08x\n",
274 			  atomic_read(&tgtp->xmt_fcp_read),
275 			  atomic_read(&tgtp->xmt_fcp_read_rsp),
276 			  atomic_read(&tgtp->xmt_fcp_write),
277 			  atomic_read(&tgtp->xmt_fcp_rsp),
278 			  atomic_read(&tgtp->xmt_fcp_drop));
279 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
280 			goto buffer_done;
281 
282 		scnprintf(tmp, sizeof(tmp),
283 			  "FCP Rsp Cmpl: %08x err %08x drop %08x\n",
284 			  atomic_read(&tgtp->xmt_fcp_rsp_cmpl),
285 			  atomic_read(&tgtp->xmt_fcp_rsp_error),
286 			  atomic_read(&tgtp->xmt_fcp_rsp_drop));
287 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
288 			goto buffer_done;
289 
290 		scnprintf(tmp, sizeof(tmp),
291 			  "FCP Rsp Abort: %08x xb %08x xricqe  %08x\n",
292 			  atomic_read(&tgtp->xmt_fcp_rsp_aborted),
293 			  atomic_read(&tgtp->xmt_fcp_rsp_xb_set),
294 			  atomic_read(&tgtp->xmt_fcp_xri_abort_cqe));
295 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
296 			goto buffer_done;
297 
298 		scnprintf(tmp, sizeof(tmp),
299 			  "ABORT: Xmt %08x Cmpl %08x\n",
300 			  atomic_read(&tgtp->xmt_fcp_abort),
301 			  atomic_read(&tgtp->xmt_fcp_abort_cmpl));
302 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
303 			goto buffer_done;
304 
305 		scnprintf(tmp, sizeof(tmp),
306 			  "ABORT: Sol %08x  Usol %08x Err %08x Cmpl %08x\n",
307 			  atomic_read(&tgtp->xmt_abort_sol),
308 			  atomic_read(&tgtp->xmt_abort_unsol),
309 			  atomic_read(&tgtp->xmt_abort_rsp),
310 			  atomic_read(&tgtp->xmt_abort_rsp_error));
311 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
312 			goto buffer_done;
313 
314 		scnprintf(tmp, sizeof(tmp),
315 			  "DELAY: ctx %08x  fod %08x wqfull %08x\n",
316 			  atomic_read(&tgtp->defer_ctx),
317 			  atomic_read(&tgtp->defer_fod),
318 			  atomic_read(&tgtp->defer_wqfull));
319 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
320 			goto buffer_done;
321 
322 		/* Calculate outstanding IOs */
323 		tot = atomic_read(&tgtp->rcv_fcp_cmd_drop);
324 		tot += atomic_read(&tgtp->xmt_fcp_release);
325 		tot = atomic_read(&tgtp->rcv_fcp_cmd_in) - tot;
326 
327 		scnprintf(tmp, sizeof(tmp),
328 			  "IO_CTX: %08x  WAIT: cur %08x tot %08x\n"
329 			  "CTX Outstanding %08llx\n\n",
330 			  phba->sli4_hba.nvmet_xri_cnt,
331 			  phba->sli4_hba.nvmet_io_wait_cnt,
332 			  phba->sli4_hba.nvmet_io_wait_total,
333 			  tot);
334 		strlcat(buf, tmp, PAGE_SIZE);
335 		goto buffer_done;
336 	}
337 
338 	localport = vport->localport;
339 	if (!localport) {
340 		len = scnprintf(buf, PAGE_SIZE,
341 				"NVME Initiator x%llx is not allocated\n",
342 				wwn_to_u64(vport->fc_portname.u.wwn));
343 		return len;
344 	}
345 	lport = (struct lpfc_nvme_lport *)localport->private;
346 	if (strlcat(buf, "\nNVME Initiator Enabled\n", PAGE_SIZE) >= PAGE_SIZE)
347 		goto buffer_done;
348 
349 	scnprintf(tmp, sizeof(tmp),
350 		  "XRI Dist lpfc%d Total %d IO %d ELS %d\n",
351 		  phba->brd_no,
352 		  phba->sli4_hba.max_cfg_param.max_xri,
353 		  phba->sli4_hba.io_xri_max,
354 		  lpfc_sli4_get_els_iocb_cnt(phba));
355 	if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
356 		goto buffer_done;
357 
358 	/* Port state is only one of two values for now. */
359 	if (localport->port_id)
360 		statep = "ONLINE";
361 	else
362 		statep = "UNKNOWN ";
363 
364 	scnprintf(tmp, sizeof(tmp),
365 		  "%s%d WWPN x%llx WWNN x%llx DID x%06x %s\n",
366 		  "NVME LPORT lpfc",
367 		  phba->brd_no,
368 		  wwn_to_u64(vport->fc_portname.u.wwn),
369 		  wwn_to_u64(vport->fc_nodename.u.wwn),
370 		  localport->port_id, statep);
371 	if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
372 		goto buffer_done;
373 
374 	spin_lock_irq(shost->host_lock);
375 
376 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
377 		nrport = NULL;
378 		spin_lock(&vport->phba->hbalock);
379 		rport = lpfc_ndlp_get_nrport(ndlp);
380 		if (rport)
381 			nrport = rport->remoteport;
382 		spin_unlock(&vport->phba->hbalock);
383 		if (!nrport)
384 			continue;
385 
386 		/* Port state is only one of two values for now. */
387 		switch (nrport->port_state) {
388 		case FC_OBJSTATE_ONLINE:
389 			statep = "ONLINE";
390 			break;
391 		case FC_OBJSTATE_UNKNOWN:
392 			statep = "UNKNOWN ";
393 			break;
394 		default:
395 			statep = "UNSUPPORTED";
396 			break;
397 		}
398 
399 		/* Tab in to show lport ownership. */
400 		if (strlcat(buf, "NVME RPORT       ", PAGE_SIZE) >= PAGE_SIZE)
401 			goto unlock_buf_done;
402 		if (phba->brd_no >= 10) {
403 			if (strlcat(buf, " ", PAGE_SIZE) >= PAGE_SIZE)
404 				goto unlock_buf_done;
405 		}
406 
407 		scnprintf(tmp, sizeof(tmp), "WWPN x%llx ",
408 			  nrport->port_name);
409 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
410 			goto unlock_buf_done;
411 
412 		scnprintf(tmp, sizeof(tmp), "WWNN x%llx ",
413 			  nrport->node_name);
414 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
415 			goto unlock_buf_done;
416 
417 		scnprintf(tmp, sizeof(tmp), "DID x%06x ",
418 			  nrport->port_id);
419 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
420 			goto unlock_buf_done;
421 
422 		/* An NVME rport can have multiple roles. */
423 		if (nrport->port_role & FC_PORT_ROLE_NVME_INITIATOR) {
424 			if (strlcat(buf, "INITIATOR ", PAGE_SIZE) >= PAGE_SIZE)
425 				goto unlock_buf_done;
426 		}
427 		if (nrport->port_role & FC_PORT_ROLE_NVME_TARGET) {
428 			if (strlcat(buf, "TARGET ", PAGE_SIZE) >= PAGE_SIZE)
429 				goto unlock_buf_done;
430 		}
431 		if (nrport->port_role & FC_PORT_ROLE_NVME_DISCOVERY) {
432 			if (strlcat(buf, "DISCSRVC ", PAGE_SIZE) >= PAGE_SIZE)
433 				goto unlock_buf_done;
434 		}
435 		if (nrport->port_role & ~(FC_PORT_ROLE_NVME_INITIATOR |
436 					  FC_PORT_ROLE_NVME_TARGET |
437 					  FC_PORT_ROLE_NVME_DISCOVERY)) {
438 			scnprintf(tmp, sizeof(tmp), "UNKNOWN ROLE x%x",
439 				  nrport->port_role);
440 			if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
441 				goto unlock_buf_done;
442 		}
443 
444 		scnprintf(tmp, sizeof(tmp), "%s\n", statep);
445 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
446 			goto unlock_buf_done;
447 	}
448 	spin_unlock_irq(shost->host_lock);
449 
450 	if (!lport)
451 		goto buffer_done;
452 
453 	if (strlcat(buf, "\nNVME Statistics\n", PAGE_SIZE) >= PAGE_SIZE)
454 		goto buffer_done;
455 
456 	scnprintf(tmp, sizeof(tmp),
457 		  "LS: Xmt %010x Cmpl %010x Abort %08x\n",
458 		  atomic_read(&lport->fc4NvmeLsRequests),
459 		  atomic_read(&lport->fc4NvmeLsCmpls),
460 		  atomic_read(&lport->xmt_ls_abort));
461 	if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
462 		goto buffer_done;
463 
464 	scnprintf(tmp, sizeof(tmp),
465 		  "LS XMIT: Err %08x  CMPL: xb %08x Err %08x\n",
466 		  atomic_read(&lport->xmt_ls_err),
467 		  atomic_read(&lport->cmpl_ls_xb),
468 		  atomic_read(&lport->cmpl_ls_err));
469 	if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
470 		goto buffer_done;
471 
472 	totin = 0;
473 	totout = 0;
474 	for (i = 0; i < phba->cfg_hdw_queue; i++) {
475 		cstat = &phba->sli4_hba.hdwq[i].nvme_cstat;
476 		tot = cstat->io_cmpls;
477 		totin += tot;
478 		data1 = cstat->input_requests;
479 		data2 = cstat->output_requests;
480 		data3 = cstat->control_requests;
481 		totout += (data1 + data2 + data3);
482 	}
483 	scnprintf(tmp, sizeof(tmp),
484 		  "Total FCP Cmpl %016llx Issue %016llx "
485 		  "OutIO %016llx\n",
486 		  totin, totout, totout - totin);
487 	if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
488 		goto buffer_done;
489 
490 	scnprintf(tmp, sizeof(tmp),
491 		  "\tabort %08x noxri %08x nondlp %08x qdepth %08x "
492 		  "wqerr %08x err %08x\n",
493 		  atomic_read(&lport->xmt_fcp_abort),
494 		  atomic_read(&lport->xmt_fcp_noxri),
495 		  atomic_read(&lport->xmt_fcp_bad_ndlp),
496 		  atomic_read(&lport->xmt_fcp_qdepth),
497 		  atomic_read(&lport->xmt_fcp_err),
498 		  atomic_read(&lport->xmt_fcp_wqerr));
499 	if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
500 		goto buffer_done;
501 
502 	scnprintf(tmp, sizeof(tmp),
503 		  "FCP CMPL: xb %08x Err %08x\n",
504 		  atomic_read(&lport->cmpl_fcp_xb),
505 		  atomic_read(&lport->cmpl_fcp_err));
506 	strlcat(buf, tmp, PAGE_SIZE);
507 
508 	/* host_lock is already unlocked. */
509 	goto buffer_done;
510 
511  unlock_buf_done:
512 	spin_unlock_irq(shost->host_lock);
513 
514  buffer_done:
515 	len = strnlen(buf, PAGE_SIZE);
516 
517 	if (unlikely(len >= (PAGE_SIZE - 1))) {
518 		lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
519 				"6314 Catching potential buffer "
520 				"overflow > PAGE_SIZE = %lu bytes\n",
521 				PAGE_SIZE);
522 		strlcpy(buf + PAGE_SIZE - 1 -
523 			strnlen(LPFC_NVME_INFO_MORE_STR, PAGE_SIZE - 1),
524 			LPFC_NVME_INFO_MORE_STR,
525 			strnlen(LPFC_NVME_INFO_MORE_STR, PAGE_SIZE - 1)
526 			+ 1);
527 	}
528 
529 	return len;
530 }
531 
532 static ssize_t
533 lpfc_scsi_stat_show(struct device *dev, struct device_attribute *attr,
534 		    char *buf)
535 {
536 	struct Scsi_Host *shost = class_to_shost(dev);
537 	struct lpfc_vport *vport = shost_priv(shost);
538 	struct lpfc_hba *phba = vport->phba;
539 	int len;
540 	struct lpfc_fc4_ctrl_stat *cstat;
541 	u64 data1, data2, data3;
542 	u64 tot, totin, totout;
543 	int i;
544 	char tmp[LPFC_MAX_SCSI_INFO_TMP_LEN] = {0};
545 
546 	if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ||
547 	    (phba->sli_rev != LPFC_SLI_REV4))
548 		return 0;
549 
550 	scnprintf(buf, PAGE_SIZE, "SCSI HDWQ Statistics\n");
551 
552 	totin = 0;
553 	totout = 0;
554 	for (i = 0; i < phba->cfg_hdw_queue; i++) {
555 		cstat = &phba->sli4_hba.hdwq[i].scsi_cstat;
556 		tot = cstat->io_cmpls;
557 		totin += tot;
558 		data1 = cstat->input_requests;
559 		data2 = cstat->output_requests;
560 		data3 = cstat->control_requests;
561 		totout += (data1 + data2 + data3);
562 
563 		scnprintf(tmp, sizeof(tmp), "HDWQ (%d): Rd %016llx Wr %016llx "
564 			  "IO %016llx ", i, data1, data2, data3);
565 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
566 			goto buffer_done;
567 
568 		scnprintf(tmp, sizeof(tmp), "Cmpl %016llx OutIO %016llx\n",
569 			  tot, ((data1 + data2 + data3) - tot));
570 		if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
571 			goto buffer_done;
572 	}
573 	scnprintf(tmp, sizeof(tmp), "Total FCP Cmpl %016llx Issue %016llx "
574 		  "OutIO %016llx\n", totin, totout, totout - totin);
575 	strlcat(buf, tmp, PAGE_SIZE);
576 
577 buffer_done:
578 	len = strnlen(buf, PAGE_SIZE);
579 
580 	return len;
581 }
582 
583 static ssize_t
584 lpfc_bg_info_show(struct device *dev, struct device_attribute *attr,
585 		  char *buf)
586 {
587 	struct Scsi_Host *shost = class_to_shost(dev);
588 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
589 	struct lpfc_hba   *phba = vport->phba;
590 
591 	if (phba->cfg_enable_bg) {
592 		if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
593 			return scnprintf(buf, PAGE_SIZE,
594 					"BlockGuard Enabled\n");
595 		else
596 			return scnprintf(buf, PAGE_SIZE,
597 					"BlockGuard Not Supported\n");
598 	} else
599 		return scnprintf(buf, PAGE_SIZE,
600 					"BlockGuard Disabled\n");
601 }
602 
603 static ssize_t
604 lpfc_bg_guard_err_show(struct device *dev, struct device_attribute *attr,
605 		       char *buf)
606 {
607 	struct Scsi_Host *shost = class_to_shost(dev);
608 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
609 	struct lpfc_hba   *phba = vport->phba;
610 
611 	return scnprintf(buf, PAGE_SIZE, "%llu\n",
612 			(unsigned long long)phba->bg_guard_err_cnt);
613 }
614 
615 static ssize_t
616 lpfc_bg_apptag_err_show(struct device *dev, struct device_attribute *attr,
617 			char *buf)
618 {
619 	struct Scsi_Host *shost = class_to_shost(dev);
620 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
621 	struct lpfc_hba   *phba = vport->phba;
622 
623 	return scnprintf(buf, PAGE_SIZE, "%llu\n",
624 			(unsigned long long)phba->bg_apptag_err_cnt);
625 }
626 
627 static ssize_t
628 lpfc_bg_reftag_err_show(struct device *dev, struct device_attribute *attr,
629 			char *buf)
630 {
631 	struct Scsi_Host *shost = class_to_shost(dev);
632 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
633 	struct lpfc_hba   *phba = vport->phba;
634 
635 	return scnprintf(buf, PAGE_SIZE, "%llu\n",
636 			(unsigned long long)phba->bg_reftag_err_cnt);
637 }
638 
639 /**
640  * lpfc_info_show - Return some pci info about the host in ascii
641  * @dev: class converted to a Scsi_host structure.
642  * @attr: device attribute, not used.
643  * @buf: on return contains the formatted text from lpfc_info().
644  *
645  * Returns: size of formatted string.
646  **/
647 static ssize_t
648 lpfc_info_show(struct device *dev, struct device_attribute *attr,
649 	       char *buf)
650 {
651 	struct Scsi_Host *host = class_to_shost(dev);
652 
653 	return scnprintf(buf, PAGE_SIZE, "%s\n", lpfc_info(host));
654 }
655 
656 /**
657  * lpfc_serialnum_show - Return the hba serial number in ascii
658  * @dev: class converted to a Scsi_host structure.
659  * @attr: device attribute, not used.
660  * @buf: on return contains the formatted text serial number.
661  *
662  * Returns: size of formatted string.
663  **/
664 static ssize_t
665 lpfc_serialnum_show(struct device *dev, struct device_attribute *attr,
666 		    char *buf)
667 {
668 	struct Scsi_Host  *shost = class_to_shost(dev);
669 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
670 	struct lpfc_hba   *phba = vport->phba;
671 
672 	return scnprintf(buf, PAGE_SIZE, "%s\n", phba->SerialNumber);
673 }
674 
675 /**
676  * lpfc_temp_sensor_show - Return the temperature sensor level
677  * @dev: class converted to a Scsi_host structure.
678  * @attr: device attribute, not used.
679  * @buf: on return contains the formatted support level.
680  *
681  * Description:
682  * Returns a number indicating the temperature sensor level currently
683  * supported, zero or one in ascii.
684  *
685  * Returns: size of formatted string.
686  **/
687 static ssize_t
688 lpfc_temp_sensor_show(struct device *dev, struct device_attribute *attr,
689 		      char *buf)
690 {
691 	struct Scsi_Host *shost = class_to_shost(dev);
692 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
693 	struct lpfc_hba   *phba = vport->phba;
694 	return scnprintf(buf, PAGE_SIZE, "%d\n", phba->temp_sensor_support);
695 }
696 
697 /**
698  * lpfc_modeldesc_show - Return the model description of the hba
699  * @dev: class converted to a Scsi_host structure.
700  * @attr: device attribute, not used.
701  * @buf: on return contains the scsi vpd model description.
702  *
703  * Returns: size of formatted string.
704  **/
705 static ssize_t
706 lpfc_modeldesc_show(struct device *dev, struct device_attribute *attr,
707 		    char *buf)
708 {
709 	struct Scsi_Host  *shost = class_to_shost(dev);
710 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
711 	struct lpfc_hba   *phba = vport->phba;
712 
713 	return scnprintf(buf, PAGE_SIZE, "%s\n", phba->ModelDesc);
714 }
715 
716 /**
717  * lpfc_modelname_show - Return the model name of the hba
718  * @dev: class converted to a Scsi_host structure.
719  * @attr: device attribute, not used.
720  * @buf: on return contains the scsi vpd model name.
721  *
722  * Returns: size of formatted string.
723  **/
724 static ssize_t
725 lpfc_modelname_show(struct device *dev, struct device_attribute *attr,
726 		    char *buf)
727 {
728 	struct Scsi_Host  *shost = class_to_shost(dev);
729 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
730 	struct lpfc_hba   *phba = vport->phba;
731 
732 	return scnprintf(buf, PAGE_SIZE, "%s\n", phba->ModelName);
733 }
734 
735 /**
736  * lpfc_programtype_show - Return the program type of the hba
737  * @dev: class converted to a Scsi_host structure.
738  * @attr: device attribute, not used.
739  * @buf: on return contains the scsi vpd program type.
740  *
741  * Returns: size of formatted string.
742  **/
743 static ssize_t
744 lpfc_programtype_show(struct device *dev, struct device_attribute *attr,
745 		      char *buf)
746 {
747 	struct Scsi_Host  *shost = class_to_shost(dev);
748 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
749 	struct lpfc_hba   *phba = vport->phba;
750 
751 	return scnprintf(buf, PAGE_SIZE, "%s\n", phba->ProgramType);
752 }
753 
754 /**
755  * lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag
756  * @dev: class converted to a Scsi_host structure.
757  * @attr: device attribute, not used.
758  * @buf: on return contains the Menlo Maintenance sli flag.
759  *
760  * Returns: size of formatted string.
761  **/
762 static ssize_t
763 lpfc_mlomgmt_show(struct device *dev, struct device_attribute *attr, char *buf)
764 {
765 	struct Scsi_Host  *shost = class_to_shost(dev);
766 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
767 	struct lpfc_hba   *phba = vport->phba;
768 
769 	return scnprintf(buf, PAGE_SIZE, "%d\n",
770 		(phba->sli.sli_flag & LPFC_MENLO_MAINT));
771 }
772 
773 /**
774  * lpfc_vportnum_show - Return the port number in ascii of the hba
775  * @dev: class converted to a Scsi_host structure.
776  * @attr: device attribute, not used.
777  * @buf: on return contains scsi vpd program type.
778  *
779  * Returns: size of formatted string.
780  **/
781 static ssize_t
782 lpfc_vportnum_show(struct device *dev, struct device_attribute *attr,
783 		   char *buf)
784 {
785 	struct Scsi_Host  *shost = class_to_shost(dev);
786 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
787 	struct lpfc_hba   *phba = vport->phba;
788 
789 	return scnprintf(buf, PAGE_SIZE, "%s\n", phba->Port);
790 }
791 
792 /**
793  * lpfc_fwrev_show - Return the firmware rev running in the hba
794  * @dev: class converted to a Scsi_host structure.
795  * @attr: device attribute, not used.
796  * @buf: on return contains the scsi vpd program type.
797  *
798  * Returns: size of formatted string.
799  **/
800 static ssize_t
801 lpfc_fwrev_show(struct device *dev, struct device_attribute *attr,
802 		char *buf)
803 {
804 	struct Scsi_Host  *shost = class_to_shost(dev);
805 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
806 	struct lpfc_hba   *phba = vport->phba;
807 	uint32_t if_type;
808 	uint8_t sli_family;
809 	char fwrev[FW_REV_STR_SIZE];
810 	int len;
811 
812 	lpfc_decode_firmware_rev(phba, fwrev, 1);
813 	if_type = phba->sli4_hba.pc_sli4_params.if_type;
814 	sli_family = phba->sli4_hba.pc_sli4_params.sli_family;
815 
816 	if (phba->sli_rev < LPFC_SLI_REV4)
817 		len = scnprintf(buf, PAGE_SIZE, "%s, sli-%d\n",
818 			       fwrev, phba->sli_rev);
819 	else
820 		len = scnprintf(buf, PAGE_SIZE, "%s, sli-%d:%d:%x\n",
821 			       fwrev, phba->sli_rev, if_type, sli_family);
822 
823 	return len;
824 }
825 
826 /**
827  * lpfc_hdw_show - Return the jedec information about the hba
828  * @dev: class converted to a Scsi_host structure.
829  * @attr: device attribute, not used.
830  * @buf: on return contains the scsi vpd program type.
831  *
832  * Returns: size of formatted string.
833  **/
834 static ssize_t
835 lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf)
836 {
837 	char hdw[9];
838 	struct Scsi_Host  *shost = class_to_shost(dev);
839 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
840 	struct lpfc_hba   *phba = vport->phba;
841 	lpfc_vpd_t *vp = &phba->vpd;
842 
843 	lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
844 	return scnprintf(buf, PAGE_SIZE, "%s %08x %08x\n", hdw,
845 			 vp->rev.smRev, vp->rev.smFwRev);
846 }
847 
848 /**
849  * lpfc_option_rom_version_show - Return the adapter ROM FCode version
850  * @dev: class converted to a Scsi_host structure.
851  * @attr: device attribute, not used.
852  * @buf: on return contains the ROM and FCode ascii strings.
853  *
854  * Returns: size of formatted string.
855  **/
856 static ssize_t
857 lpfc_option_rom_version_show(struct device *dev, struct device_attribute *attr,
858 			     char *buf)
859 {
860 	struct Scsi_Host  *shost = class_to_shost(dev);
861 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
862 	struct lpfc_hba   *phba = vport->phba;
863 	char fwrev[FW_REV_STR_SIZE];
864 
865 	if (phba->sli_rev < LPFC_SLI_REV4)
866 		return scnprintf(buf, PAGE_SIZE, "%s\n",
867 				phba->OptionROMVersion);
868 
869 	lpfc_decode_firmware_rev(phba, fwrev, 1);
870 	return scnprintf(buf, PAGE_SIZE, "%s\n", fwrev);
871 }
872 
873 /**
874  * lpfc_state_show - Return the link state of the port
875  * @dev: class converted to a Scsi_host structure.
876  * @attr: device attribute, not used.
877  * @buf: on return contains text describing the state of the link.
878  *
879  * Notes:
880  * The switch statement has no default so zero will be returned.
881  *
882  * Returns: size of formatted string.
883  **/
884 static ssize_t
885 lpfc_link_state_show(struct device *dev, struct device_attribute *attr,
886 		     char *buf)
887 {
888 	struct Scsi_Host  *shost = class_to_shost(dev);
889 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
890 	struct lpfc_hba   *phba = vport->phba;
891 	int  len = 0;
892 
893 	switch (phba->link_state) {
894 	case LPFC_LINK_UNKNOWN:
895 	case LPFC_WARM_START:
896 	case LPFC_INIT_START:
897 	case LPFC_INIT_MBX_CMDS:
898 	case LPFC_LINK_DOWN:
899 	case LPFC_HBA_ERROR:
900 		if (phba->hba_flag & LINK_DISABLED)
901 			len += scnprintf(buf + len, PAGE_SIZE-len,
902 				"Link Down - User disabled\n");
903 		else
904 			len += scnprintf(buf + len, PAGE_SIZE-len,
905 				"Link Down\n");
906 		break;
907 	case LPFC_LINK_UP:
908 	case LPFC_CLEAR_LA:
909 	case LPFC_HBA_READY:
910 		len += scnprintf(buf + len, PAGE_SIZE-len, "Link Up - ");
911 
912 		switch (vport->port_state) {
913 		case LPFC_LOCAL_CFG_LINK:
914 			len += scnprintf(buf + len, PAGE_SIZE-len,
915 					"Configuring Link\n");
916 			break;
917 		case LPFC_FDISC:
918 		case LPFC_FLOGI:
919 		case LPFC_FABRIC_CFG_LINK:
920 		case LPFC_NS_REG:
921 		case LPFC_NS_QRY:
922 		case LPFC_BUILD_DISC_LIST:
923 		case LPFC_DISC_AUTH:
924 			len += scnprintf(buf + len, PAGE_SIZE - len,
925 					"Discovery\n");
926 			break;
927 		case LPFC_VPORT_READY:
928 			len += scnprintf(buf + len, PAGE_SIZE - len,
929 					"Ready\n");
930 			break;
931 
932 		case LPFC_VPORT_FAILED:
933 			len += scnprintf(buf + len, PAGE_SIZE - len,
934 					"Failed\n");
935 			break;
936 
937 		case LPFC_VPORT_UNKNOWN:
938 			len += scnprintf(buf + len, PAGE_SIZE - len,
939 					"Unknown\n");
940 			break;
941 		}
942 		if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
943 			len += scnprintf(buf + len, PAGE_SIZE-len,
944 					"   Menlo Maint Mode\n");
945 		else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
946 			if (vport->fc_flag & FC_PUBLIC_LOOP)
947 				len += scnprintf(buf + len, PAGE_SIZE-len,
948 						"   Public Loop\n");
949 			else
950 				len += scnprintf(buf + len, PAGE_SIZE-len,
951 						"   Private Loop\n");
952 		} else {
953 			if (vport->fc_flag & FC_FABRIC)
954 				len += scnprintf(buf + len, PAGE_SIZE-len,
955 						"   Fabric\n");
956 			else
957 				len += scnprintf(buf + len, PAGE_SIZE-len,
958 						"   Point-2-Point\n");
959 		}
960 	}
961 
962 	if ((phba->sli_rev == LPFC_SLI_REV4) &&
963 	    ((bf_get(lpfc_sli_intf_if_type,
964 	     &phba->sli4_hba.sli_intf) ==
965 	     LPFC_SLI_INTF_IF_TYPE_6))) {
966 		struct lpfc_trunk_link link = phba->trunk_link;
967 
968 		if (bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba))
969 			len += scnprintf(buf + len, PAGE_SIZE - len,
970 				"Trunk port 0: Link %s %s\n",
971 				(link.link0.state == LPFC_LINK_UP) ?
972 				 "Up" : "Down. ",
973 				trunk_errmsg[link.link0.fault]);
974 
975 		if (bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba))
976 			len += scnprintf(buf + len, PAGE_SIZE - len,
977 				"Trunk port 1: Link %s %s\n",
978 				(link.link1.state == LPFC_LINK_UP) ?
979 				 "Up" : "Down. ",
980 				trunk_errmsg[link.link1.fault]);
981 
982 		if (bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba))
983 			len += scnprintf(buf + len, PAGE_SIZE - len,
984 				"Trunk port 2: Link %s %s\n",
985 				(link.link2.state == LPFC_LINK_UP) ?
986 				 "Up" : "Down. ",
987 				trunk_errmsg[link.link2.fault]);
988 
989 		if (bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba))
990 			len += scnprintf(buf + len, PAGE_SIZE - len,
991 				"Trunk port 3: Link %s %s\n",
992 				(link.link3.state == LPFC_LINK_UP) ?
993 				 "Up" : "Down. ",
994 				trunk_errmsg[link.link3.fault]);
995 
996 	}
997 
998 	return len;
999 }
1000 
1001 /**
1002  * lpfc_sli4_protocol_show - Return the fip mode of the HBA
1003  * @dev: class unused variable.
1004  * @attr: device attribute, not used.
1005  * @buf: on return contains the module description text.
1006  *
1007  * Returns: size of formatted string.
1008  **/
1009 static ssize_t
1010 lpfc_sli4_protocol_show(struct device *dev, struct device_attribute *attr,
1011 			char *buf)
1012 {
1013 	struct Scsi_Host *shost = class_to_shost(dev);
1014 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1015 	struct lpfc_hba *phba = vport->phba;
1016 
1017 	if (phba->sli_rev < LPFC_SLI_REV4)
1018 		return scnprintf(buf, PAGE_SIZE, "fc\n");
1019 
1020 	if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL) {
1021 		if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_GE)
1022 			return scnprintf(buf, PAGE_SIZE, "fcoe\n");
1023 		if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)
1024 			return scnprintf(buf, PAGE_SIZE, "fc\n");
1025 	}
1026 	return scnprintf(buf, PAGE_SIZE, "unknown\n");
1027 }
1028 
1029 /**
1030  * lpfc_oas_supported_show - Return whether or not Optimized Access Storage
1031  *			    (OAS) is supported.
1032  * @dev: class unused variable.
1033  * @attr: device attribute, not used.
1034  * @buf: on return contains the module description text.
1035  *
1036  * Returns: size of formatted string.
1037  **/
1038 static ssize_t
1039 lpfc_oas_supported_show(struct device *dev, struct device_attribute *attr,
1040 			char *buf)
1041 {
1042 	struct Scsi_Host *shost = class_to_shost(dev);
1043 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
1044 	struct lpfc_hba *phba = vport->phba;
1045 
1046 	return scnprintf(buf, PAGE_SIZE, "%d\n",
1047 			phba->sli4_hba.pc_sli4_params.oas_supported);
1048 }
1049 
1050 /**
1051  * lpfc_link_state_store - Transition the link_state on an HBA port
1052  * @dev: class device that is converted into a Scsi_host.
1053  * @attr: device attribute, not used.
1054  * @buf: one or more lpfc_polling_flags values.
1055  * @count: not used.
1056  *
1057  * Returns:
1058  * -EINVAL if the buffer is not "up" or "down"
1059  * return from link state change function if non-zero
1060  * length of the buf on success
1061  **/
1062 static ssize_t
1063 lpfc_link_state_store(struct device *dev, struct device_attribute *attr,
1064 		const char *buf, size_t count)
1065 {
1066 	struct Scsi_Host  *shost = class_to_shost(dev);
1067 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1068 	struct lpfc_hba   *phba = vport->phba;
1069 
1070 	int status = -EINVAL;
1071 
1072 	if ((strncmp(buf, "up", sizeof("up") - 1) == 0) &&
1073 			(phba->link_state == LPFC_LINK_DOWN))
1074 		status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
1075 	else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) &&
1076 			(phba->link_state >= LPFC_LINK_UP))
1077 		status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT);
1078 
1079 	if (status == 0)
1080 		return strlen(buf);
1081 	else
1082 		return status;
1083 }
1084 
1085 /**
1086  * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports
1087  * @dev: class device that is converted into a Scsi_host.
1088  * @attr: device attribute, not used.
1089  * @buf: on return contains the sum of fc mapped and unmapped.
1090  *
1091  * Description:
1092  * Returns the ascii text number of the sum of the fc mapped and unmapped
1093  * vport counts.
1094  *
1095  * Returns: size of formatted string.
1096  **/
1097 static ssize_t
1098 lpfc_num_discovered_ports_show(struct device *dev,
1099 			       struct device_attribute *attr, char *buf)
1100 {
1101 	struct Scsi_Host  *shost = class_to_shost(dev);
1102 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1103 
1104 	return scnprintf(buf, PAGE_SIZE, "%d\n",
1105 			vport->fc_map_cnt + vport->fc_unmap_cnt);
1106 }
1107 
1108 /**
1109  * lpfc_issue_lip - Misnomer, name carried over from long ago
1110  * @shost: Scsi_Host pointer.
1111  *
1112  * Description:
1113  * Bring the link down gracefully then re-init the link. The firmware will
1114  * re-init the fiber channel interface as required. Does not issue a LIP.
1115  *
1116  * Returns:
1117  * -EPERM port offline or management commands are being blocked
1118  * -ENOMEM cannot allocate memory for the mailbox command
1119  * -EIO error sending the mailbox command
1120  * zero for success
1121  **/
1122 static int
1123 lpfc_issue_lip(struct Scsi_Host *shost)
1124 {
1125 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1126 	struct lpfc_hba   *phba = vport->phba;
1127 	LPFC_MBOXQ_t *pmboxq;
1128 	int mbxstatus = MBXERR_ERROR;
1129 
1130 	/*
1131 	 * If the link is offline, disabled or BLOCK_MGMT_IO
1132 	 * it doesn't make any sense to allow issue_lip
1133 	 */
1134 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
1135 	    (phba->hba_flag & LINK_DISABLED) ||
1136 	    (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
1137 		return -EPERM;
1138 
1139 	pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
1140 
1141 	if (!pmboxq)
1142 		return -ENOMEM;
1143 
1144 	memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1145 	pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1146 	pmboxq->u.mb.mbxOwner = OWN_HOST;
1147 
1148 	mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
1149 
1150 	if ((mbxstatus == MBX_SUCCESS) &&
1151 	    (pmboxq->u.mb.mbxStatus == 0 ||
1152 	     pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
1153 		memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1154 		lpfc_init_link(phba, pmboxq, phba->cfg_topology,
1155 			       phba->cfg_link_speed);
1156 		mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1157 						     phba->fc_ratov * 2);
1158 		if ((mbxstatus == MBX_SUCCESS) &&
1159 		    (pmboxq->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
1160 			lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
1161 					"2859 SLI authentication is required "
1162 					"for INIT_LINK but has not done yet\n");
1163 	}
1164 
1165 	lpfc_set_loopback_flag(phba);
1166 	if (mbxstatus != MBX_TIMEOUT)
1167 		mempool_free(pmboxq, phba->mbox_mem_pool);
1168 
1169 	if (mbxstatus == MBXERR_ERROR)
1170 		return -EIO;
1171 
1172 	return 0;
1173 }
1174 
1175 int
1176 lpfc_emptyq_wait(struct lpfc_hba *phba, struct list_head *q, spinlock_t *lock)
1177 {
1178 	int cnt = 0;
1179 
1180 	spin_lock_irq(lock);
1181 	while (!list_empty(q)) {
1182 		spin_unlock_irq(lock);
1183 		msleep(20);
1184 		if (cnt++ > 250) {  /* 5 secs */
1185 			lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1186 					"0466 %s %s\n",
1187 					"Outstanding IO when ",
1188 					"bringing Adapter offline\n");
1189 				return 0;
1190 		}
1191 		spin_lock_irq(lock);
1192 	}
1193 	spin_unlock_irq(lock);
1194 	return 1;
1195 }
1196 
1197 /**
1198  * lpfc_do_offline - Issues a mailbox command to bring the link down
1199  * @phba: lpfc_hba pointer.
1200  * @type: LPFC_EVT_OFFLINE, LPFC_EVT_WARM_START, LPFC_EVT_KILL.
1201  *
1202  * Notes:
1203  * Assumes any error from lpfc_do_offline() will be negative.
1204  * Can wait up to 5 seconds for the port ring buffers count
1205  * to reach zero, prints a warning if it is not zero and continues.
1206  * lpfc_workq_post_event() returns a non-zero return code if call fails.
1207  *
1208  * Returns:
1209  * -EIO error posting the event
1210  * zero for success
1211  **/
1212 static int
1213 lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
1214 {
1215 	struct completion online_compl;
1216 	struct lpfc_queue *qp = NULL;
1217 	struct lpfc_sli_ring *pring;
1218 	struct lpfc_sli *psli;
1219 	int status = 0;
1220 	int i;
1221 	int rc;
1222 
1223 	init_completion(&online_compl);
1224 	rc = lpfc_workq_post_event(phba, &status, &online_compl,
1225 			      LPFC_EVT_OFFLINE_PREP);
1226 	if (rc == 0)
1227 		return -ENOMEM;
1228 
1229 	wait_for_completion(&online_compl);
1230 
1231 	if (status != 0)
1232 		return -EIO;
1233 
1234 	psli = &phba->sli;
1235 
1236 	/*
1237 	 * If freeing the queues have already started, don't access them.
1238 	 * Otherwise set FREE_WAIT to indicate that queues are being used
1239 	 * to hold the freeing process until we finish.
1240 	 */
1241 	spin_lock_irq(&phba->hbalock);
1242 	if (!(psli->sli_flag & LPFC_QUEUE_FREE_INIT)) {
1243 		psli->sli_flag |= LPFC_QUEUE_FREE_WAIT;
1244 	} else {
1245 		spin_unlock_irq(&phba->hbalock);
1246 		goto skip_wait;
1247 	}
1248 	spin_unlock_irq(&phba->hbalock);
1249 
1250 	/* Wait a little for things to settle down, but not
1251 	 * long enough for dev loss timeout to expire.
1252 	 */
1253 	if (phba->sli_rev != LPFC_SLI_REV4) {
1254 		for (i = 0; i < psli->num_rings; i++) {
1255 			pring = &psli->sli3_ring[i];
1256 			if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
1257 					      &phba->hbalock))
1258 				goto out;
1259 		}
1260 	} else {
1261 		list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
1262 			pring = qp->pring;
1263 			if (!pring)
1264 				continue;
1265 			if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
1266 					      &pring->ring_lock))
1267 				goto out;
1268 		}
1269 	}
1270 out:
1271 	spin_lock_irq(&phba->hbalock);
1272 	psli->sli_flag &= ~LPFC_QUEUE_FREE_WAIT;
1273 	spin_unlock_irq(&phba->hbalock);
1274 
1275 skip_wait:
1276 	init_completion(&online_compl);
1277 	rc = lpfc_workq_post_event(phba, &status, &online_compl, type);
1278 	if (rc == 0)
1279 		return -ENOMEM;
1280 
1281 	wait_for_completion(&online_compl);
1282 
1283 	if (status != 0)
1284 		return -EIO;
1285 
1286 	return 0;
1287 }
1288 
1289 /**
1290  * lpfc_reset_pci_bus - resets PCI bridge controller's secondary bus of an HBA
1291  * @phba: lpfc_hba pointer.
1292  *
1293  * Description:
1294  * Issues a PCI secondary bus reset for the phba->pcidev.
1295  *
1296  * Notes:
1297  * First walks the bus_list to ensure only PCI devices with Emulex
1298  * vendor id, device ids that support hot reset, only one occurrence
1299  * of function 0, and all ports on the bus are in offline mode to ensure the
1300  * hot reset only affects one valid HBA.
1301  *
1302  * Returns:
1303  * -ENOTSUPP, cfg_enable_hba_reset must be of value 2
1304  * -ENODEV,   NULL ptr to pcidev
1305  * -EBADSLT,  detected invalid device
1306  * -EBUSY,    port is not in offline state
1307  *      0,    successful
1308  */
1309 static int
1310 lpfc_reset_pci_bus(struct lpfc_hba *phba)
1311 {
1312 	struct pci_dev *pdev = phba->pcidev;
1313 	struct Scsi_Host *shost = NULL;
1314 	struct lpfc_hba *phba_other = NULL;
1315 	struct pci_dev *ptr = NULL;
1316 	int res;
1317 
1318 	if (phba->cfg_enable_hba_reset != 2)
1319 		return -ENOTSUPP;
1320 
1321 	if (!pdev) {
1322 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "8345 pdev NULL!\n");
1323 		return -ENODEV;
1324 	}
1325 
1326 	res = lpfc_check_pci_resettable(phba);
1327 	if (res)
1328 		return res;
1329 
1330 	/* Walk the list of devices on the pci_dev's bus */
1331 	list_for_each_entry(ptr, &pdev->bus->devices, bus_list) {
1332 		/* Check port is offline */
1333 		shost = pci_get_drvdata(ptr);
1334 		if (shost) {
1335 			phba_other =
1336 				((struct lpfc_vport *)shost->hostdata)->phba;
1337 			if (!(phba_other->pport->fc_flag & FC_OFFLINE_MODE)) {
1338 				lpfc_printf_log(phba_other, KERN_INFO, LOG_INIT,
1339 						"8349 WWPN = 0x%02x%02x%02x%02x"
1340 						"%02x%02x%02x%02x is not "
1341 						"offline!\n",
1342 						phba_other->wwpn[0],
1343 						phba_other->wwpn[1],
1344 						phba_other->wwpn[2],
1345 						phba_other->wwpn[3],
1346 						phba_other->wwpn[4],
1347 						phba_other->wwpn[5],
1348 						phba_other->wwpn[6],
1349 						phba_other->wwpn[7]);
1350 				return -EBUSY;
1351 			}
1352 		}
1353 	}
1354 
1355 	/* Issue PCI bus reset */
1356 	res = pci_reset_bus(pdev);
1357 	if (res) {
1358 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1359 				"8350 PCI reset bus failed: %d\n", res);
1360 	}
1361 
1362 	return res;
1363 }
1364 
1365 /**
1366  * lpfc_selective_reset - Offline then onlines the port
1367  * @phba: lpfc_hba pointer.
1368  *
1369  * Description:
1370  * If the port is configured to allow a reset then the hba is brought
1371  * offline then online.
1372  *
1373  * Notes:
1374  * Assumes any error from lpfc_do_offline() will be negative.
1375  * Do not make this function static.
1376  *
1377  * Returns:
1378  * lpfc_do_offline() return code if not zero
1379  * -EIO reset not configured or error posting the event
1380  * zero for success
1381  **/
1382 int
1383 lpfc_selective_reset(struct lpfc_hba *phba)
1384 {
1385 	struct completion online_compl;
1386 	int status = 0;
1387 	int rc;
1388 
1389 	if (!phba->cfg_enable_hba_reset)
1390 		return -EACCES;
1391 
1392 	if (!(phba->pport->fc_flag & FC_OFFLINE_MODE)) {
1393 		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1394 
1395 		if (status != 0)
1396 			return status;
1397 	}
1398 
1399 	init_completion(&online_compl);
1400 	rc = lpfc_workq_post_event(phba, &status, &online_compl,
1401 			      LPFC_EVT_ONLINE);
1402 	if (rc == 0)
1403 		return -ENOMEM;
1404 
1405 	wait_for_completion(&online_compl);
1406 
1407 	if (status != 0)
1408 		return -EIO;
1409 
1410 	return 0;
1411 }
1412 
1413 /**
1414  * lpfc_issue_reset - Selectively resets an adapter
1415  * @dev: class device that is converted into a Scsi_host.
1416  * @attr: device attribute, not used.
1417  * @buf: containing the string "selective".
1418  * @count: unused variable.
1419  *
1420  * Description:
1421  * If the buf contains the string "selective" then lpfc_selective_reset()
1422  * is called to perform the reset.
1423  *
1424  * Notes:
1425  * Assumes any error from lpfc_selective_reset() will be negative.
1426  * If lpfc_selective_reset() returns zero then the length of the buffer
1427  * is returned which indicates success
1428  *
1429  * Returns:
1430  * -EINVAL if the buffer does not contain the string "selective"
1431  * length of buf if lpfc-selective_reset() if the call succeeds
1432  * return value of lpfc_selective_reset() if the call fails
1433 **/
1434 static ssize_t
1435 lpfc_issue_reset(struct device *dev, struct device_attribute *attr,
1436 		 const char *buf, size_t count)
1437 {
1438 	struct Scsi_Host  *shost = class_to_shost(dev);
1439 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1440 	struct lpfc_hba   *phba = vport->phba;
1441 	int status = -EINVAL;
1442 
1443 	if (!phba->cfg_enable_hba_reset)
1444 		return -EACCES;
1445 
1446 	if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
1447 		status = phba->lpfc_selective_reset(phba);
1448 
1449 	if (status == 0)
1450 		return strlen(buf);
1451 	else
1452 		return status;
1453 }
1454 
1455 /**
1456  * lpfc_sli4_pdev_status_reg_wait - Wait for pdev status register for readyness
1457  * @phba: lpfc_hba pointer.
1458  *
1459  * Description:
1460  * SLI4 interface type-2 device to wait on the sliport status register for
1461  * the readyness after performing a firmware reset.
1462  *
1463  * Returns:
1464  * zero for success, -EPERM when port does not have privilege to perform the
1465  * reset, -EIO when port timeout from recovering from the reset.
1466  *
1467  * Note:
1468  * As the caller will interpret the return code by value, be careful in making
1469  * change or addition to return codes.
1470  **/
1471 int
1472 lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba)
1473 {
1474 	struct lpfc_register portstat_reg = {0};
1475 	int i;
1476 
1477 	msleep(100);
1478 	if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
1479 		       &portstat_reg.word0))
1480 		return -EIO;
1481 
1482 	/* verify if privileged for the request operation */
1483 	if (!bf_get(lpfc_sliport_status_rn, &portstat_reg) &&
1484 	    !bf_get(lpfc_sliport_status_err, &portstat_reg))
1485 		return -EPERM;
1486 
1487 	/* wait for the SLI port firmware ready after firmware reset */
1488 	for (i = 0; i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT; i++) {
1489 		msleep(10);
1490 		if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
1491 			       &portstat_reg.word0))
1492 			continue;
1493 		if (!bf_get(lpfc_sliport_status_err, &portstat_reg))
1494 			continue;
1495 		if (!bf_get(lpfc_sliport_status_rn, &portstat_reg))
1496 			continue;
1497 		if (!bf_get(lpfc_sliport_status_rdy, &portstat_reg))
1498 			continue;
1499 		break;
1500 	}
1501 
1502 	if (i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT)
1503 		return 0;
1504 	else
1505 		return -EIO;
1506 }
1507 
1508 /**
1509  * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc
1510  * @phba: lpfc_hba pointer.
1511  *
1512  * Description:
1513  * Request SLI4 interface type-2 device to perform a physical register set
1514  * access.
1515  *
1516  * Returns:
1517  * zero for success
1518  **/
1519 static ssize_t
1520 lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode)
1521 {
1522 	struct completion online_compl;
1523 	struct pci_dev *pdev = phba->pcidev;
1524 	uint32_t before_fc_flag;
1525 	uint32_t sriov_nr_virtfn;
1526 	uint32_t reg_val;
1527 	int status = 0, rc = 0;
1528 	int job_posted = 1, sriov_err;
1529 
1530 	if (!phba->cfg_enable_hba_reset)
1531 		return -EACCES;
1532 
1533 	if ((phba->sli_rev < LPFC_SLI_REV4) ||
1534 	    (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
1535 	     LPFC_SLI_INTF_IF_TYPE_2))
1536 		return -EPERM;
1537 
1538 	/* Keep state if we need to restore back */
1539 	before_fc_flag = phba->pport->fc_flag;
1540 	sriov_nr_virtfn = phba->cfg_sriov_nr_virtfn;
1541 
1542 	/* Disable SR-IOV virtual functions if enabled */
1543 	if (phba->cfg_sriov_nr_virtfn) {
1544 		pci_disable_sriov(pdev);
1545 		phba->cfg_sriov_nr_virtfn = 0;
1546 	}
1547 
1548 	if (opcode == LPFC_FW_DUMP)
1549 		phba->hba_flag |= HBA_FW_DUMP_OP;
1550 
1551 	status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1552 
1553 	if (status != 0) {
1554 		phba->hba_flag &= ~HBA_FW_DUMP_OP;
1555 		return status;
1556 	}
1557 
1558 	/* wait for the device to be quiesced before firmware reset */
1559 	msleep(100);
1560 
1561 	reg_val = readl(phba->sli4_hba.conf_regs_memmap_p +
1562 			LPFC_CTL_PDEV_CTL_OFFSET);
1563 
1564 	if (opcode == LPFC_FW_DUMP)
1565 		reg_val |= LPFC_FW_DUMP_REQUEST;
1566 	else if (opcode == LPFC_FW_RESET)
1567 		reg_val |= LPFC_CTL_PDEV_CTL_FRST;
1568 	else if (opcode == LPFC_DV_RESET)
1569 		reg_val |= LPFC_CTL_PDEV_CTL_DRST;
1570 
1571 	writel(reg_val, phba->sli4_hba.conf_regs_memmap_p +
1572 	       LPFC_CTL_PDEV_CTL_OFFSET);
1573 	/* flush */
1574 	readl(phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET);
1575 
1576 	/* delay driver action following IF_TYPE_2 reset */
1577 	rc = lpfc_sli4_pdev_status_reg_wait(phba);
1578 
1579 	if (rc == -EPERM) {
1580 		/* no privilege for reset */
1581 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1582 				"3150 No privilege to perform the requested "
1583 				"access: x%x\n", reg_val);
1584 	} else if (rc == -EIO) {
1585 		/* reset failed, there is nothing more we can do */
1586 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1587 				"3153 Fail to perform the requested "
1588 				"access: x%x\n", reg_val);
1589 		return rc;
1590 	}
1591 
1592 	/* keep the original port state */
1593 	if (before_fc_flag & FC_OFFLINE_MODE)
1594 		goto out;
1595 
1596 	init_completion(&online_compl);
1597 	job_posted = lpfc_workq_post_event(phba, &status, &online_compl,
1598 					   LPFC_EVT_ONLINE);
1599 	if (!job_posted)
1600 		goto out;
1601 
1602 	wait_for_completion(&online_compl);
1603 
1604 out:
1605 	/* in any case, restore the virtual functions enabled as before */
1606 	if (sriov_nr_virtfn) {
1607 		sriov_err =
1608 			lpfc_sli_probe_sriov_nr_virtfn(phba, sriov_nr_virtfn);
1609 		if (!sriov_err)
1610 			phba->cfg_sriov_nr_virtfn = sriov_nr_virtfn;
1611 	}
1612 
1613 	/* return proper error code */
1614 	if (!rc) {
1615 		if (!job_posted)
1616 			rc = -ENOMEM;
1617 		else if (status)
1618 			rc = -EIO;
1619 	}
1620 	return rc;
1621 }
1622 
1623 /**
1624  * lpfc_nport_evt_cnt_show - Return the number of nport events
1625  * @dev: class device that is converted into a Scsi_host.
1626  * @attr: device attribute, not used.
1627  * @buf: on return contains the ascii number of nport events.
1628  *
1629  * Returns: size of formatted string.
1630  **/
1631 static ssize_t
1632 lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr,
1633 			char *buf)
1634 {
1635 	struct Scsi_Host  *shost = class_to_shost(dev);
1636 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1637 	struct lpfc_hba   *phba = vport->phba;
1638 
1639 	return scnprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
1640 }
1641 
1642 static int
1643 lpfc_set_trunking(struct lpfc_hba *phba, char *buff_out)
1644 {
1645 	LPFC_MBOXQ_t *mbox = NULL;
1646 	unsigned long val = 0;
1647 	char *pval = NULL;
1648 	int rc = 0;
1649 
1650 	if (!strncmp("enable", buff_out,
1651 				 strlen("enable"))) {
1652 		pval = buff_out + strlen("enable") + 1;
1653 		rc = kstrtoul(pval, 0, &val);
1654 		if (rc)
1655 			return rc; /* Invalid  number */
1656 	} else if (!strncmp("disable", buff_out,
1657 				 strlen("disable"))) {
1658 		val = 0;
1659 	} else {
1660 		return -EINVAL;  /* Invalid command */
1661 	}
1662 
1663 	switch (val) {
1664 	case 0:
1665 		val = 0x0; /* Disable */
1666 		break;
1667 	case 2:
1668 		val = 0x1; /* Enable two port trunk */
1669 		break;
1670 	case 4:
1671 		val = 0x2; /* Enable four port trunk */
1672 		break;
1673 	default:
1674 		return -EINVAL;
1675 	}
1676 
1677 	lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1678 			"0070 Set trunk mode with val %ld ", val);
1679 
1680 	mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1681 	if (!mbox)
1682 		return -ENOMEM;
1683 
1684 	lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
1685 			 LPFC_MBOX_OPCODE_FCOE_FC_SET_TRUNK_MODE,
1686 			 12, LPFC_SLI4_MBX_EMBED);
1687 
1688 	bf_set(lpfc_mbx_set_trunk_mode,
1689 	       &mbox->u.mqe.un.set_trunk_mode,
1690 	       val);
1691 	rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
1692 	if (rc)
1693 		lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1694 				"0071 Set trunk mode failed with status: %d",
1695 				rc);
1696 	if (rc != MBX_TIMEOUT)
1697 		mempool_free(mbox, phba->mbox_mem_pool);
1698 
1699 	return 0;
1700 }
1701 
1702 /**
1703  * lpfc_board_mode_show - Return the state of the board
1704  * @dev: class device that is converted into a Scsi_host.
1705  * @attr: device attribute, not used.
1706  * @buf: on return contains the state of the adapter.
1707  *
1708  * Returns: size of formatted string.
1709  **/
1710 static ssize_t
1711 lpfc_board_mode_show(struct device *dev, struct device_attribute *attr,
1712 		     char *buf)
1713 {
1714 	struct Scsi_Host  *shost = class_to_shost(dev);
1715 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1716 	struct lpfc_hba   *phba = vport->phba;
1717 	char  * state;
1718 
1719 	if (phba->link_state == LPFC_HBA_ERROR)
1720 		state = "error";
1721 	else if (phba->link_state == LPFC_WARM_START)
1722 		state = "warm start";
1723 	else if (phba->link_state == LPFC_INIT_START)
1724 		state = "offline";
1725 	else
1726 		state = "online";
1727 
1728 	return scnprintf(buf, PAGE_SIZE, "%s\n", state);
1729 }
1730 
1731 /**
1732  * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state
1733  * @dev: class device that is converted into a Scsi_host.
1734  * @attr: device attribute, not used.
1735  * @buf: containing one of the strings "online", "offline", "warm" or "error".
1736  * @count: unused variable.
1737  *
1738  * Returns:
1739  * -EACCES if enable hba reset not enabled
1740  * -EINVAL if the buffer does not contain a valid string (see above)
1741  * -EIO if lpfc_workq_post_event() or lpfc_do_offline() fails
1742  * buf length greater than zero indicates success
1743  **/
1744 static ssize_t
1745 lpfc_board_mode_store(struct device *dev, struct device_attribute *attr,
1746 		      const char *buf, size_t count)
1747 {
1748 	struct Scsi_Host  *shost = class_to_shost(dev);
1749 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1750 	struct lpfc_hba   *phba = vport->phba;
1751 	struct completion online_compl;
1752 	char *board_mode_str = NULL;
1753 	int status = 0;
1754 	int rc;
1755 
1756 	if (!phba->cfg_enable_hba_reset) {
1757 		status = -EACCES;
1758 		goto board_mode_out;
1759 	}
1760 
1761 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1762 			 "3050 lpfc_board_mode set to %s\n", buf);
1763 
1764 	init_completion(&online_compl);
1765 
1766 	if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
1767 		rc = lpfc_workq_post_event(phba, &status, &online_compl,
1768 				      LPFC_EVT_ONLINE);
1769 		if (rc == 0) {
1770 			status = -ENOMEM;
1771 			goto board_mode_out;
1772 		}
1773 		wait_for_completion(&online_compl);
1774 		if (status)
1775 			status = -EIO;
1776 	} else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
1777 		status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1778 	else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
1779 		if (phba->sli_rev == LPFC_SLI_REV4)
1780 			status = -EINVAL;
1781 		else
1782 			status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
1783 	else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
1784 		if (phba->sli_rev == LPFC_SLI_REV4)
1785 			status = -EINVAL;
1786 		else
1787 			status = lpfc_do_offline(phba, LPFC_EVT_KILL);
1788 	else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0)
1789 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_DUMP);
1790 	else if (strncmp(buf, "fw_reset", sizeof("fw_reset") - 1) == 0)
1791 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_RESET);
1792 	else if (strncmp(buf, "dv_reset", sizeof("dv_reset") - 1) == 0)
1793 		status = lpfc_sli4_pdev_reg_request(phba, LPFC_DV_RESET);
1794 	else if (strncmp(buf, "pci_bus_reset", sizeof("pci_bus_reset") - 1)
1795 		 == 0)
1796 		status = lpfc_reset_pci_bus(phba);
1797 	else if (strncmp(buf, "trunk", sizeof("trunk") - 1) == 0)
1798 		status = lpfc_set_trunking(phba, (char *)buf + sizeof("trunk"));
1799 	else
1800 		status = -EINVAL;
1801 
1802 board_mode_out:
1803 	if (!status)
1804 		return strlen(buf);
1805 	else {
1806 		board_mode_str = strchr(buf, '\n');
1807 		if (board_mode_str)
1808 			*board_mode_str = '\0';
1809 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1810 				 "3097 Failed \"%s\", status(%d), "
1811 				 "fc_flag(x%x)\n",
1812 				 buf, status, phba->pport->fc_flag);
1813 		return status;
1814 	}
1815 }
1816 
1817 /**
1818  * lpfc_get_hba_info - Return various bits of informaton about the adapter
1819  * @phba: pointer to the adapter structure.
1820  * @mxri: max xri count.
1821  * @axri: available xri count.
1822  * @mrpi: max rpi count.
1823  * @arpi: available rpi count.
1824  * @mvpi: max vpi count.
1825  * @avpi: available vpi count.
1826  *
1827  * Description:
1828  * If an integer pointer for an count is not null then the value for the
1829  * count is returned.
1830  *
1831  * Returns:
1832  * zero on error
1833  * one for success
1834  **/
1835 static int
1836 lpfc_get_hba_info(struct lpfc_hba *phba,
1837 		  uint32_t *mxri, uint32_t *axri,
1838 		  uint32_t *mrpi, uint32_t *arpi,
1839 		  uint32_t *mvpi, uint32_t *avpi)
1840 {
1841 	struct lpfc_mbx_read_config *rd_config;
1842 	LPFC_MBOXQ_t *pmboxq;
1843 	MAILBOX_t *pmb;
1844 	int rc = 0;
1845 	uint32_t max_vpi;
1846 
1847 	/*
1848 	 * prevent udev from issuing mailbox commands until the port is
1849 	 * configured.
1850 	 */
1851 	if (phba->link_state < LPFC_LINK_DOWN ||
1852 	    !phba->mbox_mem_pool ||
1853 	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
1854 		return 0;
1855 
1856 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
1857 		return 0;
1858 
1859 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1860 	if (!pmboxq)
1861 		return 0;
1862 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1863 
1864 	pmb = &pmboxq->u.mb;
1865 	pmb->mbxCommand = MBX_READ_CONFIG;
1866 	pmb->mbxOwner = OWN_HOST;
1867 	pmboxq->ctx_buf = NULL;
1868 
1869 	if (phba->pport->fc_flag & FC_OFFLINE_MODE)
1870 		rc = MBX_NOT_FINISHED;
1871 	else
1872 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1873 
1874 	if (rc != MBX_SUCCESS) {
1875 		if (rc != MBX_TIMEOUT)
1876 			mempool_free(pmboxq, phba->mbox_mem_pool);
1877 		return 0;
1878 	}
1879 
1880 	if (phba->sli_rev == LPFC_SLI_REV4) {
1881 		rd_config = &pmboxq->u.mqe.un.rd_config;
1882 		if (mrpi)
1883 			*mrpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
1884 		if (arpi)
1885 			*arpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config) -
1886 					phba->sli4_hba.max_cfg_param.rpi_used;
1887 		if (mxri)
1888 			*mxri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
1889 		if (axri)
1890 			*axri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config) -
1891 					phba->sli4_hba.max_cfg_param.xri_used;
1892 
1893 		/* Account for differences with SLI-3.  Get vpi count from
1894 		 * mailbox data and subtract one for max vpi value.
1895 		 */
1896 		max_vpi = (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) > 0) ?
1897 			(bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) - 1) : 0;
1898 
1899 		/* Limit the max we support */
1900 		if (max_vpi > LPFC_MAX_VPI)
1901 			max_vpi = LPFC_MAX_VPI;
1902 		if (mvpi)
1903 			*mvpi = max_vpi;
1904 		if (avpi)
1905 			*avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used;
1906 	} else {
1907 		if (mrpi)
1908 			*mrpi = pmb->un.varRdConfig.max_rpi;
1909 		if (arpi)
1910 			*arpi = pmb->un.varRdConfig.avail_rpi;
1911 		if (mxri)
1912 			*mxri = pmb->un.varRdConfig.max_xri;
1913 		if (axri)
1914 			*axri = pmb->un.varRdConfig.avail_xri;
1915 		if (mvpi)
1916 			*mvpi = pmb->un.varRdConfig.max_vpi;
1917 		if (avpi) {
1918 			/* avail_vpi is only valid if link is up and ready */
1919 			if (phba->link_state == LPFC_HBA_READY)
1920 				*avpi = pmb->un.varRdConfig.avail_vpi;
1921 			else
1922 				*avpi = pmb->un.varRdConfig.max_vpi;
1923 		}
1924 	}
1925 
1926 	mempool_free(pmboxq, phba->mbox_mem_pool);
1927 	return 1;
1928 }
1929 
1930 /**
1931  * lpfc_max_rpi_show - Return maximum rpi
1932  * @dev: class device that is converted into a Scsi_host.
1933  * @attr: device attribute, not used.
1934  * @buf: on return contains the maximum rpi count in decimal or "Unknown".
1935  *
1936  * Description:
1937  * Calls lpfc_get_hba_info() asking for just the mrpi count.
1938  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1939  * to "Unknown" and the buffer length is returned, therefore the caller
1940  * must check for "Unknown" in the buffer to detect a failure.
1941  *
1942  * Returns: size of formatted string.
1943  **/
1944 static ssize_t
1945 lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr,
1946 		  char *buf)
1947 {
1948 	struct Scsi_Host  *shost = class_to_shost(dev);
1949 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1950 	struct lpfc_hba   *phba = vport->phba;
1951 	uint32_t cnt;
1952 
1953 	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL))
1954 		return scnprintf(buf, PAGE_SIZE, "%d\n", cnt);
1955 	return scnprintf(buf, PAGE_SIZE, "Unknown\n");
1956 }
1957 
1958 /**
1959  * lpfc_used_rpi_show - Return maximum rpi minus available rpi
1960  * @dev: class device that is converted into a Scsi_host.
1961  * @attr: device attribute, not used.
1962  * @buf: containing the used rpi count in decimal or "Unknown".
1963  *
1964  * Description:
1965  * Calls lpfc_get_hba_info() asking for just the mrpi and arpi counts.
1966  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1967  * to "Unknown" and the buffer length is returned, therefore the caller
1968  * must check for "Unknown" in the buffer to detect a failure.
1969  *
1970  * Returns: size of formatted string.
1971  **/
1972 static ssize_t
1973 lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr,
1974 		   char *buf)
1975 {
1976 	struct Scsi_Host  *shost = class_to_shost(dev);
1977 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1978 	struct lpfc_hba   *phba = vport->phba;
1979 	uint32_t cnt, acnt;
1980 
1981 	if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL))
1982 		return scnprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
1983 	return scnprintf(buf, PAGE_SIZE, "Unknown\n");
1984 }
1985 
1986 /**
1987  * lpfc_max_xri_show - Return maximum xri
1988  * @dev: class device that is converted into a Scsi_host.
1989  * @attr: device attribute, not used.
1990  * @buf: on return contains the maximum xri count in decimal or "Unknown".
1991  *
1992  * Description:
1993  * Calls lpfc_get_hba_info() asking for just the mrpi count.
1994  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1995  * to "Unknown" and the buffer length is returned, therefore the caller
1996  * must check for "Unknown" in the buffer to detect a failure.
1997  *
1998  * Returns: size of formatted string.
1999  **/
2000 static ssize_t
2001 lpfc_max_xri_show(struct device *dev, struct device_attribute *attr,
2002 		  char *buf)
2003 {
2004 	struct Scsi_Host  *shost = class_to_shost(dev);
2005 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2006 	struct lpfc_hba   *phba = vport->phba;
2007 	uint32_t cnt;
2008 
2009 	if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL))
2010 		return scnprintf(buf, PAGE_SIZE, "%d\n", cnt);
2011 	return scnprintf(buf, PAGE_SIZE, "Unknown\n");
2012 }
2013 
2014 /**
2015  * lpfc_used_xri_show - Return maximum xpi minus the available xpi
2016  * @dev: class device that is converted into a Scsi_host.
2017  * @attr: device attribute, not used.
2018  * @buf: on return contains the used xri count in decimal or "Unknown".
2019  *
2020  * Description:
2021  * Calls lpfc_get_hba_info() asking for just the mxri and axri counts.
2022  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
2023  * to "Unknown" and the buffer length is returned, therefore the caller
2024  * must check for "Unknown" in the buffer to detect a failure.
2025  *
2026  * Returns: size of formatted string.
2027  **/
2028 static ssize_t
2029 lpfc_used_xri_show(struct device *dev, struct device_attribute *attr,
2030 		   char *buf)
2031 {
2032 	struct Scsi_Host  *shost = class_to_shost(dev);
2033 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2034 	struct lpfc_hba   *phba = vport->phba;
2035 	uint32_t cnt, acnt;
2036 
2037 	if (lpfc_get_hba_info(phba, &cnt, &acnt, NULL, NULL, NULL, NULL))
2038 		return scnprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
2039 	return scnprintf(buf, PAGE_SIZE, "Unknown\n");
2040 }
2041 
2042 /**
2043  * lpfc_max_vpi_show - Return maximum vpi
2044  * @dev: class device that is converted into a Scsi_host.
2045  * @attr: device attribute, not used.
2046  * @buf: on return contains the maximum vpi count in decimal or "Unknown".
2047  *
2048  * Description:
2049  * Calls lpfc_get_hba_info() asking for just the mvpi count.
2050  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
2051  * to "Unknown" and the buffer length is returned, therefore the caller
2052  * must check for "Unknown" in the buffer to detect a failure.
2053  *
2054  * Returns: size of formatted string.
2055  **/
2056 static ssize_t
2057 lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr,
2058 		  char *buf)
2059 {
2060 	struct Scsi_Host  *shost = class_to_shost(dev);
2061 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2062 	struct lpfc_hba   *phba = vport->phba;
2063 	uint32_t cnt;
2064 
2065 	if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, NULL))
2066 		return scnprintf(buf, PAGE_SIZE, "%d\n", cnt);
2067 	return scnprintf(buf, PAGE_SIZE, "Unknown\n");
2068 }
2069 
2070 /**
2071  * lpfc_used_vpi_show - Return maximum vpi minus the available vpi
2072  * @dev: class device that is converted into a Scsi_host.
2073  * @attr: device attribute, not used.
2074  * @buf: on return contains the used vpi count in decimal or "Unknown".
2075  *
2076  * Description:
2077  * Calls lpfc_get_hba_info() asking for just the mvpi and avpi counts.
2078  * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
2079  * to "Unknown" and the buffer length is returned, therefore the caller
2080  * must check for "Unknown" in the buffer to detect a failure.
2081  *
2082  * Returns: size of formatted string.
2083  **/
2084 static ssize_t
2085 lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr,
2086 		   char *buf)
2087 {
2088 	struct Scsi_Host  *shost = class_to_shost(dev);
2089 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2090 	struct lpfc_hba   *phba = vport->phba;
2091 	uint32_t cnt, acnt;
2092 
2093 	if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, &acnt))
2094 		return scnprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
2095 	return scnprintf(buf, PAGE_SIZE, "Unknown\n");
2096 }
2097 
2098 /**
2099  * lpfc_npiv_info_show - Return text about NPIV support for the adapter
2100  * @dev: class device that is converted into a Scsi_host.
2101  * @attr: device attribute, not used.
2102  * @buf: text that must be interpreted to determine if npiv is supported.
2103  *
2104  * Description:
2105  * Buffer will contain text indicating npiv is not suppoerted on the port,
2106  * the port is an NPIV physical port, or it is an npiv virtual port with
2107  * the id of the vport.
2108  *
2109  * Returns: size of formatted string.
2110  **/
2111 static ssize_t
2112 lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr,
2113 		    char *buf)
2114 {
2115 	struct Scsi_Host  *shost = class_to_shost(dev);
2116 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2117 	struct lpfc_hba   *phba = vport->phba;
2118 
2119 	if (!(phba->max_vpi))
2120 		return scnprintf(buf, PAGE_SIZE, "NPIV Not Supported\n");
2121 	if (vport->port_type == LPFC_PHYSICAL_PORT)
2122 		return scnprintf(buf, PAGE_SIZE, "NPIV Physical\n");
2123 	return scnprintf(buf, PAGE_SIZE, "NPIV Virtual (VPI %d)\n", vport->vpi);
2124 }
2125 
2126 /**
2127  * lpfc_poll_show - Return text about poll support for the adapter
2128  * @dev: class device that is converted into a Scsi_host.
2129  * @attr: device attribute, not used.
2130  * @buf: on return contains the cfg_poll in hex.
2131  *
2132  * Notes:
2133  * cfg_poll should be a lpfc_polling_flags type.
2134  *
2135  * Returns: size of formatted string.
2136  **/
2137 static ssize_t
2138 lpfc_poll_show(struct device *dev, struct device_attribute *attr,
2139 	       char *buf)
2140 {
2141 	struct Scsi_Host  *shost = class_to_shost(dev);
2142 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2143 	struct lpfc_hba   *phba = vport->phba;
2144 
2145 	return scnprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
2146 }
2147 
2148 /**
2149  * lpfc_poll_store - Set the value of cfg_poll for the adapter
2150  * @dev: class device that is converted into a Scsi_host.
2151  * @attr: device attribute, not used.
2152  * @buf: one or more lpfc_polling_flags values.
2153  * @count: not used.
2154  *
2155  * Notes:
2156  * buf contents converted to integer and checked for a valid value.
2157  *
2158  * Returns:
2159  * -EINVAL if the buffer connot be converted or is out of range
2160  * length of the buf on success
2161  **/
2162 static ssize_t
2163 lpfc_poll_store(struct device *dev, struct device_attribute *attr,
2164 		const char *buf, size_t count)
2165 {
2166 	struct Scsi_Host  *shost = class_to_shost(dev);
2167 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2168 	struct lpfc_hba   *phba = vport->phba;
2169 	uint32_t creg_val;
2170 	uint32_t old_val;
2171 	int val=0;
2172 
2173 	if (!isdigit(buf[0]))
2174 		return -EINVAL;
2175 
2176 	if (sscanf(buf, "%i", &val) != 1)
2177 		return -EINVAL;
2178 
2179 	if ((val & 0x3) != val)
2180 		return -EINVAL;
2181 
2182 	if (phba->sli_rev == LPFC_SLI_REV4)
2183 		val = 0;
2184 
2185 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2186 		"3051 lpfc_poll changed from %d to %d\n",
2187 		phba->cfg_poll, val);
2188 
2189 	spin_lock_irq(&phba->hbalock);
2190 
2191 	old_val = phba->cfg_poll;
2192 
2193 	if (val & ENABLE_FCP_RING_POLLING) {
2194 		if ((val & DISABLE_FCP_RING_INT) &&
2195 		    !(old_val & DISABLE_FCP_RING_INT)) {
2196 			if (lpfc_readl(phba->HCregaddr, &creg_val)) {
2197 				spin_unlock_irq(&phba->hbalock);
2198 				return -EINVAL;
2199 			}
2200 			creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
2201 			writel(creg_val, phba->HCregaddr);
2202 			readl(phba->HCregaddr); /* flush */
2203 
2204 			lpfc_poll_start_timer(phba);
2205 		}
2206 	} else if (val != 0x0) {
2207 		spin_unlock_irq(&phba->hbalock);
2208 		return -EINVAL;
2209 	}
2210 
2211 	if (!(val & DISABLE_FCP_RING_INT) &&
2212 	    (old_val & DISABLE_FCP_RING_INT))
2213 	{
2214 		spin_unlock_irq(&phba->hbalock);
2215 		del_timer(&phba->fcp_poll_timer);
2216 		spin_lock_irq(&phba->hbalock);
2217 		if (lpfc_readl(phba->HCregaddr, &creg_val)) {
2218 			spin_unlock_irq(&phba->hbalock);
2219 			return -EINVAL;
2220 		}
2221 		creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
2222 		writel(creg_val, phba->HCregaddr);
2223 		readl(phba->HCregaddr); /* flush */
2224 	}
2225 
2226 	phba->cfg_poll = val;
2227 
2228 	spin_unlock_irq(&phba->hbalock);
2229 
2230 	return strlen(buf);
2231 }
2232 
2233 /**
2234  * lpfc_fips_level_show - Return the current FIPS level for the HBA
2235  * @dev: class unused variable.
2236  * @attr: device attribute, not used.
2237  * @buf: on return contains the module description text.
2238  *
2239  * Returns: size of formatted string.
2240  **/
2241 static ssize_t
2242 lpfc_fips_level_show(struct device *dev,  struct device_attribute *attr,
2243 		     char *buf)
2244 {
2245 	struct Scsi_Host  *shost = class_to_shost(dev);
2246 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2247 	struct lpfc_hba   *phba = vport->phba;
2248 
2249 	return scnprintf(buf, PAGE_SIZE, "%d\n", phba->fips_level);
2250 }
2251 
2252 /**
2253  * lpfc_fips_rev_show - Return the FIPS Spec revision for the HBA
2254  * @dev: class unused variable.
2255  * @attr: device attribute, not used.
2256  * @buf: on return contains the module description text.
2257  *
2258  * Returns: size of formatted string.
2259  **/
2260 static ssize_t
2261 lpfc_fips_rev_show(struct device *dev,  struct device_attribute *attr,
2262 		   char *buf)
2263 {
2264 	struct Scsi_Host  *shost = class_to_shost(dev);
2265 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2266 	struct lpfc_hba   *phba = vport->phba;
2267 
2268 	return scnprintf(buf, PAGE_SIZE, "%d\n", phba->fips_spec_rev);
2269 }
2270 
2271 /**
2272  * lpfc_dss_show - Return the current state of dss and the configured state
2273  * @dev: class converted to a Scsi_host structure.
2274  * @attr: device attribute, not used.
2275  * @buf: on return contains the formatted text.
2276  *
2277  * Returns: size of formatted string.
2278  **/
2279 static ssize_t
2280 lpfc_dss_show(struct device *dev, struct device_attribute *attr,
2281 	      char *buf)
2282 {
2283 	struct Scsi_Host *shost = class_to_shost(dev);
2284 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2285 	struct lpfc_hba   *phba = vport->phba;
2286 
2287 	return scnprintf(buf, PAGE_SIZE, "%s - %sOperational\n",
2288 			(phba->cfg_enable_dss) ? "Enabled" : "Disabled",
2289 			(phba->sli3_options & LPFC_SLI3_DSS_ENABLED) ?
2290 				"" : "Not ");
2291 }
2292 
2293 /**
2294  * lpfc_sriov_hw_max_virtfn_show - Return maximum number of virtual functions
2295  * @dev: class converted to a Scsi_host structure.
2296  * @attr: device attribute, not used.
2297  * @buf: on return contains the formatted support level.
2298  *
2299  * Description:
2300  * Returns the maximum number of virtual functions a physical function can
2301  * support, 0 will be returned if called on virtual function.
2302  *
2303  * Returns: size of formatted string.
2304  **/
2305 static ssize_t
2306 lpfc_sriov_hw_max_virtfn_show(struct device *dev,
2307 			      struct device_attribute *attr,
2308 			      char *buf)
2309 {
2310 	struct Scsi_Host *shost = class_to_shost(dev);
2311 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2312 	struct lpfc_hba *phba = vport->phba;
2313 	uint16_t max_nr_virtfn;
2314 
2315 	max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba);
2316 	return scnprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn);
2317 }
2318 
2319 static inline bool lpfc_rangecheck(uint val, uint min, uint max)
2320 {
2321 	return val >= min && val <= max;
2322 }
2323 
2324 /**
2325  * lpfc_enable_bbcr_set: Sets an attribute value.
2326  * @phba: pointer the the adapter structure.
2327  * @val: integer attribute value.
2328  *
2329  * Description:
2330  * Validates the min and max values then sets the
2331  * adapter config field if in the valid range. prints error message
2332  * and does not set the parameter if invalid.
2333  *
2334  * Returns:
2335  * zero on success
2336  * -EINVAL if val is invalid
2337  */
2338 static ssize_t
2339 lpfc_enable_bbcr_set(struct lpfc_hba *phba, uint val)
2340 {
2341 	if (lpfc_rangecheck(val, 0, 1) && phba->sli_rev == LPFC_SLI_REV4) {
2342 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2343 				"3068 %s_enable_bbcr changed from %d to %d\n",
2344 				LPFC_DRIVER_NAME, phba->cfg_enable_bbcr, val);
2345 		phba->cfg_enable_bbcr = val;
2346 		return 0;
2347 	}
2348 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2349 			"0451 %s_enable_bbcr cannot set to %d, range is 0, 1\n",
2350 			LPFC_DRIVER_NAME, val);
2351 	return -EINVAL;
2352 }
2353 
2354 /**
2355  * lpfc_param_show - Return a cfg attribute value in decimal
2356  *
2357  * Description:
2358  * Macro that given an attr e.g. hba_queue_depth expands
2359  * into a function with the name lpfc_hba_queue_depth_show.
2360  *
2361  * lpfc_##attr##_show: Return the decimal value of an adapters cfg_xxx field.
2362  * @dev: class device that is converted into a Scsi_host.
2363  * @attr: device attribute, not used.
2364  * @buf: on return contains the attribute value in decimal.
2365  *
2366  * Returns: size of formatted string.
2367  **/
2368 #define lpfc_param_show(attr)	\
2369 static ssize_t \
2370 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2371 		   char *buf) \
2372 { \
2373 	struct Scsi_Host  *shost = class_to_shost(dev);\
2374 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2375 	struct lpfc_hba   *phba = vport->phba;\
2376 	return scnprintf(buf, PAGE_SIZE, "%d\n",\
2377 			phba->cfg_##attr);\
2378 }
2379 
2380 /**
2381  * lpfc_param_hex_show - Return a cfg attribute value in hex
2382  *
2383  * Description:
2384  * Macro that given an attr e.g. hba_queue_depth expands
2385  * into a function with the name lpfc_hba_queue_depth_show
2386  *
2387  * lpfc_##attr##_show: Return the hex value of an adapters cfg_xxx field.
2388  * @dev: class device that is converted into a Scsi_host.
2389  * @attr: device attribute, not used.
2390  * @buf: on return contains the attribute value in hexadecimal.
2391  *
2392  * Returns: size of formatted string.
2393  **/
2394 #define lpfc_param_hex_show(attr)	\
2395 static ssize_t \
2396 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2397 		   char *buf) \
2398 { \
2399 	struct Scsi_Host  *shost = class_to_shost(dev);\
2400 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2401 	struct lpfc_hba   *phba = vport->phba;\
2402 	uint val = 0;\
2403 	val = phba->cfg_##attr;\
2404 	return scnprintf(buf, PAGE_SIZE, "%#x\n",\
2405 			phba->cfg_##attr);\
2406 }
2407 
2408 /**
2409  * lpfc_param_init - Initializes a cfg attribute
2410  *
2411  * Description:
2412  * Macro that given an attr e.g. hba_queue_depth expands
2413  * into a function with the name lpfc_hba_queue_depth_init. The macro also
2414  * takes a default argument, a minimum and maximum argument.
2415  *
2416  * lpfc_##attr##_init: Initializes an attribute.
2417  * @phba: pointer the the adapter structure.
2418  * @val: integer attribute value.
2419  *
2420  * Validates the min and max values then sets the adapter config field
2421  * accordingly, or uses the default if out of range and prints an error message.
2422  *
2423  * Returns:
2424  * zero on success
2425  * -EINVAL if default used
2426  **/
2427 #define lpfc_param_init(attr, default, minval, maxval)	\
2428 static int \
2429 lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \
2430 { \
2431 	if (lpfc_rangecheck(val, minval, maxval)) {\
2432 		phba->cfg_##attr = val;\
2433 		return 0;\
2434 	}\
2435 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
2436 			"0449 lpfc_"#attr" attribute cannot be set to %d, "\
2437 			"allowed range is ["#minval", "#maxval"]\n", val); \
2438 	phba->cfg_##attr = default;\
2439 	return -EINVAL;\
2440 }
2441 
2442 /**
2443  * lpfc_param_set - Set a cfg attribute value
2444  *
2445  * Description:
2446  * Macro that given an attr e.g. hba_queue_depth expands
2447  * into a function with the name lpfc_hba_queue_depth_set
2448  *
2449  * lpfc_##attr##_set: Sets an attribute value.
2450  * @phba: pointer the the adapter structure.
2451  * @val: integer attribute value.
2452  *
2453  * Description:
2454  * Validates the min and max values then sets the
2455  * adapter config field if in the valid range. prints error message
2456  * and does not set the parameter if invalid.
2457  *
2458  * Returns:
2459  * zero on success
2460  * -EINVAL if val is invalid
2461  **/
2462 #define lpfc_param_set(attr, default, minval, maxval)	\
2463 static int \
2464 lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \
2465 { \
2466 	if (lpfc_rangecheck(val, minval, maxval)) {\
2467 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
2468 			"3052 lpfc_" #attr " changed from %d to %d\n", \
2469 			phba->cfg_##attr, val); \
2470 		phba->cfg_##attr = val;\
2471 		return 0;\
2472 	}\
2473 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
2474 			"0450 lpfc_"#attr" attribute cannot be set to %d, "\
2475 			"allowed range is ["#minval", "#maxval"]\n", val); \
2476 	return -EINVAL;\
2477 }
2478 
2479 /**
2480  * lpfc_param_store - Set a vport attribute value
2481  *
2482  * Description:
2483  * Macro that given an attr e.g. hba_queue_depth expands
2484  * into a function with the name lpfc_hba_queue_depth_store.
2485  *
2486  * lpfc_##attr##_store: Set an sttribute value.
2487  * @dev: class device that is converted into a Scsi_host.
2488  * @attr: device attribute, not used.
2489  * @buf: contains the attribute value in ascii.
2490  * @count: not used.
2491  *
2492  * Description:
2493  * Convert the ascii text number to an integer, then
2494  * use the lpfc_##attr##_set function to set the value.
2495  *
2496  * Returns:
2497  * -EINVAL if val is invalid or lpfc_##attr##_set() fails
2498  * length of buffer upon success.
2499  **/
2500 #define lpfc_param_store(attr)	\
2501 static ssize_t \
2502 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
2503 		    const char *buf, size_t count) \
2504 { \
2505 	struct Scsi_Host  *shost = class_to_shost(dev);\
2506 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2507 	struct lpfc_hba   *phba = vport->phba;\
2508 	uint val = 0;\
2509 	if (!isdigit(buf[0]))\
2510 		return -EINVAL;\
2511 	if (sscanf(buf, "%i", &val) != 1)\
2512 		return -EINVAL;\
2513 	if (lpfc_##attr##_set(phba, val) == 0) \
2514 		return strlen(buf);\
2515 	else \
2516 		return -EINVAL;\
2517 }
2518 
2519 /**
2520  * lpfc_vport_param_show - Return decimal formatted cfg attribute value
2521  *
2522  * Description:
2523  * Macro that given an attr e.g. hba_queue_depth expands
2524  * into a function with the name lpfc_hba_queue_depth_show
2525  *
2526  * lpfc_##attr##_show: prints the attribute value in decimal.
2527  * @dev: class device that is converted into a Scsi_host.
2528  * @attr: device attribute, not used.
2529  * @buf: on return contains the attribute value in decimal.
2530  *
2531  * Returns: length of formatted string.
2532  **/
2533 #define lpfc_vport_param_show(attr)	\
2534 static ssize_t \
2535 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2536 		   char *buf) \
2537 { \
2538 	struct Scsi_Host  *shost = class_to_shost(dev);\
2539 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2540 	return scnprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\
2541 }
2542 
2543 /**
2544  * lpfc_vport_param_hex_show - Return hex formatted attribute value
2545  *
2546  * Description:
2547  * Macro that given an attr e.g.
2548  * hba_queue_depth expands into a function with the name
2549  * lpfc_hba_queue_depth_show
2550  *
2551  * lpfc_##attr##_show: prints the attribute value in hexadecimal.
2552  * @dev: class device that is converted into a Scsi_host.
2553  * @attr: device attribute, not used.
2554  * @buf: on return contains the attribute value in hexadecimal.
2555  *
2556  * Returns: length of formatted string.
2557  **/
2558 #define lpfc_vport_param_hex_show(attr)	\
2559 static ssize_t \
2560 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2561 		   char *buf) \
2562 { \
2563 	struct Scsi_Host  *shost = class_to_shost(dev);\
2564 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2565 	return scnprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\
2566 }
2567 
2568 /**
2569  * lpfc_vport_param_init - Initialize a vport cfg attribute
2570  *
2571  * Description:
2572  * Macro that given an attr e.g. hba_queue_depth expands
2573  * into a function with the name lpfc_hba_queue_depth_init. The macro also
2574  * takes a default argument, a minimum and maximum argument.
2575  *
2576  * lpfc_##attr##_init: validates the min and max values then sets the
2577  * adapter config field accordingly, or uses the default if out of range
2578  * and prints an error message.
2579  * @phba: pointer the the adapter structure.
2580  * @val: integer attribute value.
2581  *
2582  * Returns:
2583  * zero on success
2584  * -EINVAL if default used
2585  **/
2586 #define lpfc_vport_param_init(attr, default, minval, maxval)	\
2587 static int \
2588 lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \
2589 { \
2590 	if (lpfc_rangecheck(val, minval, maxval)) {\
2591 		vport->cfg_##attr = val;\
2592 		return 0;\
2593 	}\
2594 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2595 			 "0423 lpfc_"#attr" attribute cannot be set to %d, "\
2596 			 "allowed range is ["#minval", "#maxval"]\n", val); \
2597 	vport->cfg_##attr = default;\
2598 	return -EINVAL;\
2599 }
2600 
2601 /**
2602  * lpfc_vport_param_set - Set a vport cfg attribute
2603  *
2604  * Description:
2605  * Macro that given an attr e.g. hba_queue_depth expands
2606  * into a function with the name lpfc_hba_queue_depth_set
2607  *
2608  * lpfc_##attr##_set: validates the min and max values then sets the
2609  * adapter config field if in the valid range. prints error message
2610  * and does not set the parameter if invalid.
2611  * @phba: pointer the the adapter structure.
2612  * @val:	integer attribute value.
2613  *
2614  * Returns:
2615  * zero on success
2616  * -EINVAL if val is invalid
2617  **/
2618 #define lpfc_vport_param_set(attr, default, minval, maxval)	\
2619 static int \
2620 lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \
2621 { \
2622 	if (lpfc_rangecheck(val, minval, maxval)) {\
2623 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2624 			"3053 lpfc_" #attr \
2625 			" changed from %d (x%x) to %d (x%x)\n", \
2626 			vport->cfg_##attr, vport->cfg_##attr, \
2627 			val, val); \
2628 		vport->cfg_##attr = val;\
2629 		return 0;\
2630 	}\
2631 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2632 			 "0424 lpfc_"#attr" attribute cannot be set to %d, "\
2633 			 "allowed range is ["#minval", "#maxval"]\n", val); \
2634 	return -EINVAL;\
2635 }
2636 
2637 /**
2638  * lpfc_vport_param_store - Set a vport attribute
2639  *
2640  * Description:
2641  * Macro that given an attr e.g. hba_queue_depth
2642  * expands into a function with the name lpfc_hba_queue_depth_store
2643  *
2644  * lpfc_##attr##_store: convert the ascii text number to an integer, then
2645  * use the lpfc_##attr##_set function to set the value.
2646  * @cdev: class device that is converted into a Scsi_host.
2647  * @buf:	contains the attribute value in decimal.
2648  * @count: not used.
2649  *
2650  * Returns:
2651  * -EINVAL if val is invalid or lpfc_##attr##_set() fails
2652  * length of buffer upon success.
2653  **/
2654 #define lpfc_vport_param_store(attr)	\
2655 static ssize_t \
2656 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
2657 		    const char *buf, size_t count) \
2658 { \
2659 	struct Scsi_Host  *shost = class_to_shost(dev);\
2660 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2661 	uint val = 0;\
2662 	if (!isdigit(buf[0]))\
2663 		return -EINVAL;\
2664 	if (sscanf(buf, "%i", &val) != 1)\
2665 		return -EINVAL;\
2666 	if (lpfc_##attr##_set(vport, val) == 0) \
2667 		return strlen(buf);\
2668 	else \
2669 		return -EINVAL;\
2670 }
2671 
2672 
2673 static DEVICE_ATTR(nvme_info, 0444, lpfc_nvme_info_show, NULL);
2674 static DEVICE_ATTR(scsi_stat, 0444, lpfc_scsi_stat_show, NULL);
2675 static DEVICE_ATTR(bg_info, S_IRUGO, lpfc_bg_info_show, NULL);
2676 static DEVICE_ATTR(bg_guard_err, S_IRUGO, lpfc_bg_guard_err_show, NULL);
2677 static DEVICE_ATTR(bg_apptag_err, S_IRUGO, lpfc_bg_apptag_err_show, NULL);
2678 static DEVICE_ATTR(bg_reftag_err, S_IRUGO, lpfc_bg_reftag_err_show, NULL);
2679 static DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
2680 static DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
2681 static DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
2682 static DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
2683 static DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
2684 static DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL);
2685 static DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
2686 static DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
2687 static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show,
2688 		lpfc_link_state_store);
2689 static DEVICE_ATTR(option_rom_version, S_IRUGO,
2690 		   lpfc_option_rom_version_show, NULL);
2691 static DEVICE_ATTR(num_discovered_ports, S_IRUGO,
2692 		   lpfc_num_discovered_ports_show, NULL);
2693 static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
2694 static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
2695 static DEVICE_ATTR_RO(lpfc_drvr_version);
2696 static DEVICE_ATTR_RO(lpfc_enable_fip);
2697 static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
2698 		   lpfc_board_mode_show, lpfc_board_mode_store);
2699 static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
2700 static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL);
2701 static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL);
2702 static DEVICE_ATTR(max_rpi, S_IRUGO, lpfc_max_rpi_show, NULL);
2703 static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
2704 static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
2705 static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
2706 static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
2707 static DEVICE_ATTR_RO(lpfc_temp_sensor);
2708 static DEVICE_ATTR_RO(lpfc_fips_level);
2709 static DEVICE_ATTR_RO(lpfc_fips_rev);
2710 static DEVICE_ATTR_RO(lpfc_dss);
2711 static DEVICE_ATTR_RO(lpfc_sriov_hw_max_virtfn);
2712 static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
2713 static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
2714 		   NULL);
2715 
2716 static char *lpfc_soft_wwn_key = "C99G71SL8032A";
2717 #define WWN_SZ 8
2718 /**
2719  * lpfc_wwn_set - Convert string to the 8 byte WWN value.
2720  * @buf: WWN string.
2721  * @cnt: Length of string.
2722  * @wwn: Array to receive converted wwn value.
2723  *
2724  * Returns:
2725  * -EINVAL if the buffer does not contain a valid wwn
2726  * 0 success
2727  **/
2728 static size_t
2729 lpfc_wwn_set(const char *buf, size_t cnt, char wwn[])
2730 {
2731 	unsigned int i, j;
2732 
2733 	/* Count may include a LF at end of string */
2734 	if (buf[cnt-1] == '\n')
2735 		cnt--;
2736 
2737 	if ((cnt < 16) || (cnt > 18) || ((cnt == 17) && (*buf++ != 'x')) ||
2738 	    ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
2739 		return -EINVAL;
2740 
2741 	memset(wwn, 0, WWN_SZ);
2742 
2743 	/* Validate and store the new name */
2744 	for (i = 0, j = 0; i < 16; i++) {
2745 		if ((*buf >= 'a') && (*buf <= 'f'))
2746 			j = ((j << 4) | ((*buf++ - 'a') + 10));
2747 		else if ((*buf >= 'A') && (*buf <= 'F'))
2748 			j = ((j << 4) | ((*buf++ - 'A') + 10));
2749 		else if ((*buf >= '0') && (*buf <= '9'))
2750 			j = ((j << 4) | (*buf++ - '0'));
2751 		else
2752 			return -EINVAL;
2753 		if (i % 2) {
2754 			wwn[i/2] = j & 0xff;
2755 			j = 0;
2756 		}
2757 	}
2758 	return 0;
2759 }
2760 /**
2761  * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
2762  * @dev: class device that is converted into a Scsi_host.
2763  * @attr: device attribute, not used.
2764  * @buf: containing the string lpfc_soft_wwn_key.
2765  * @count: must be size of lpfc_soft_wwn_key.
2766  *
2767  * Returns:
2768  * -EINVAL if the buffer does not contain lpfc_soft_wwn_key
2769  * length of buf indicates success
2770  **/
2771 static ssize_t
2772 lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
2773 			   const char *buf, size_t count)
2774 {
2775 	struct Scsi_Host  *shost = class_to_shost(dev);
2776 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2777 	struct lpfc_hba   *phba = vport->phba;
2778 	unsigned int cnt = count;
2779 	uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
2780 	u32 *fawwpn_key = (uint32_t *)&vport->fc_sparam.un.vendorVersion[0];
2781 
2782 	/*
2783 	 * We're doing a simple sanity check for soft_wwpn setting.
2784 	 * We require that the user write a specific key to enable
2785 	 * the soft_wwpn attribute to be settable. Once the attribute
2786 	 * is written, the enable key resets. If further updates are
2787 	 * desired, the key must be written again to re-enable the
2788 	 * attribute.
2789 	 *
2790 	 * The "key" is not secret - it is a hardcoded string shown
2791 	 * here. The intent is to protect against the random user or
2792 	 * application that is just writing attributes.
2793 	 */
2794 	if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) {
2795 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2796 				 "0051 "LPFC_DRIVER_NAME" soft wwpn can not"
2797 				 " be enabled: fawwpn is enabled\n");
2798 		return -EINVAL;
2799 	}
2800 
2801 	/* count may include a LF at end of string */
2802 	if (buf[cnt-1] == '\n')
2803 		cnt--;
2804 
2805 	if ((cnt != strlen(lpfc_soft_wwn_key)) ||
2806 	    (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
2807 		return -EINVAL;
2808 
2809 	phba->soft_wwn_enable = 1;
2810 
2811 	dev_printk(KERN_WARNING, &phba->pcidev->dev,
2812 		   "lpfc%d: soft_wwpn assignment has been enabled.\n",
2813 		   phba->brd_no);
2814 	dev_printk(KERN_WARNING, &phba->pcidev->dev,
2815 		   "  The soft_wwpn feature is not supported by Broadcom.");
2816 
2817 	return count;
2818 }
2819 static DEVICE_ATTR_WO(lpfc_soft_wwn_enable);
2820 
2821 /**
2822  * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
2823  * @dev: class device that is converted into a Scsi_host.
2824  * @attr: device attribute, not used.
2825  * @buf: on return contains the wwpn in hexadecimal.
2826  *
2827  * Returns: size of formatted string.
2828  **/
2829 static ssize_t
2830 lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr,
2831 		    char *buf)
2832 {
2833 	struct Scsi_Host  *shost = class_to_shost(dev);
2834 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2835 	struct lpfc_hba   *phba = vport->phba;
2836 
2837 	return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
2838 			(unsigned long long)phba->cfg_soft_wwpn);
2839 }
2840 
2841 /**
2842  * lpfc_soft_wwpn_store - Set the ww port name of the adapter
2843  * @dev class device that is converted into a Scsi_host.
2844  * @attr: device attribute, not used.
2845  * @buf: contains the wwpn in hexadecimal.
2846  * @count: number of wwpn bytes in buf
2847  *
2848  * Returns:
2849  * -EACCES hba reset not enabled, adapter over temp
2850  * -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid
2851  * -EIO error taking adapter offline or online
2852  * value of count on success
2853  **/
2854 static ssize_t
2855 lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
2856 		     const char *buf, size_t count)
2857 {
2858 	struct Scsi_Host  *shost = class_to_shost(dev);
2859 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2860 	struct lpfc_hba   *phba = vport->phba;
2861 	struct completion online_compl;
2862 	int stat1 = 0, stat2 = 0;
2863 	unsigned int cnt = count;
2864 	u8 wwpn[WWN_SZ];
2865 	int rc;
2866 
2867 	if (!phba->cfg_enable_hba_reset)
2868 		return -EACCES;
2869 	spin_lock_irq(&phba->hbalock);
2870 	if (phba->over_temp_state == HBA_OVER_TEMP) {
2871 		spin_unlock_irq(&phba->hbalock);
2872 		return -EACCES;
2873 	}
2874 	spin_unlock_irq(&phba->hbalock);
2875 	/* count may include a LF at end of string */
2876 	if (buf[cnt-1] == '\n')
2877 		cnt--;
2878 
2879 	if (!phba->soft_wwn_enable)
2880 		return -EINVAL;
2881 
2882 	/* lock setting wwpn, wwnn down */
2883 	phba->soft_wwn_enable = 0;
2884 
2885 	rc = lpfc_wwn_set(buf, cnt, wwpn);
2886 	if (rc) {
2887 		/* not able to set wwpn, unlock it */
2888 		phba->soft_wwn_enable = 1;
2889 		return rc;
2890 	}
2891 
2892 	phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
2893 	fc_host_port_name(shost) = phba->cfg_soft_wwpn;
2894 	if (phba->cfg_soft_wwnn)
2895 		fc_host_node_name(shost) = phba->cfg_soft_wwnn;
2896 
2897 	dev_printk(KERN_NOTICE, &phba->pcidev->dev,
2898 		   "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
2899 
2900 	stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
2901 	if (stat1)
2902 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2903 				"0463 lpfc_soft_wwpn attribute set failed to "
2904 				"reinit adapter - %d\n", stat1);
2905 	init_completion(&online_compl);
2906 	rc = lpfc_workq_post_event(phba, &stat2, &online_compl,
2907 				   LPFC_EVT_ONLINE);
2908 	if (rc == 0)
2909 		return -ENOMEM;
2910 
2911 	wait_for_completion(&online_compl);
2912 	if (stat2)
2913 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2914 				"0464 lpfc_soft_wwpn attribute set failed to "
2915 				"reinit adapter - %d\n", stat2);
2916 	return (stat1 || stat2) ? -EIO : count;
2917 }
2918 static DEVICE_ATTR_RW(lpfc_soft_wwpn);
2919 
2920 /**
2921  * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
2922  * @dev: class device that is converted into a Scsi_host.
2923  * @attr: device attribute, not used.
2924  * @buf: on return contains the wwnn in hexadecimal.
2925  *
2926  * Returns: size of formatted string.
2927  **/
2928 static ssize_t
2929 lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr,
2930 		    char *buf)
2931 {
2932 	struct Scsi_Host *shost = class_to_shost(dev);
2933 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2934 	return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
2935 			(unsigned long long)phba->cfg_soft_wwnn);
2936 }
2937 
2938 /**
2939  * lpfc_soft_wwnn_store - sets the ww node name of the adapter
2940  * @cdev: class device that is converted into a Scsi_host.
2941  * @buf: contains the ww node name in hexadecimal.
2942  * @count: number of wwnn bytes in buf.
2943  *
2944  * Returns:
2945  * -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid
2946  * value of count on success
2947  **/
2948 static ssize_t
2949 lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
2950 		     const char *buf, size_t count)
2951 {
2952 	struct Scsi_Host *shost = class_to_shost(dev);
2953 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2954 	unsigned int cnt = count;
2955 	u8 wwnn[WWN_SZ];
2956 	int rc;
2957 
2958 	/* count may include a LF at end of string */
2959 	if (buf[cnt-1] == '\n')
2960 		cnt--;
2961 
2962 	if (!phba->soft_wwn_enable)
2963 		return -EINVAL;
2964 
2965 	rc = lpfc_wwn_set(buf, cnt, wwnn);
2966 	if (rc) {
2967 		/* Allow wwnn to be set many times, as long as the enable
2968 		 * is set. However, once the wwpn is set, everything locks.
2969 		 */
2970 		return rc;
2971 	}
2972 
2973 	phba->cfg_soft_wwnn = wwn_to_u64(wwnn);
2974 
2975 	dev_printk(KERN_NOTICE, &phba->pcidev->dev,
2976 		   "lpfc%d: soft_wwnn set. Value will take effect upon "
2977 		   "setting of the soft_wwpn\n", phba->brd_no);
2978 
2979 	return count;
2980 }
2981 static DEVICE_ATTR_RW(lpfc_soft_wwnn);
2982 
2983 /**
2984  * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for
2985  *		      Optimized Access Storage (OAS) operations.
2986  * @dev: class device that is converted into a Scsi_host.
2987  * @attr: device attribute, not used.
2988  * @buf: buffer for passing information.
2989  *
2990  * Returns:
2991  * value of count
2992  **/
2993 static ssize_t
2994 lpfc_oas_tgt_show(struct device *dev, struct device_attribute *attr,
2995 		  char *buf)
2996 {
2997 	struct Scsi_Host *shost = class_to_shost(dev);
2998 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2999 
3000 	return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
3001 			wwn_to_u64(phba->cfg_oas_tgt_wwpn));
3002 }
3003 
3004 /**
3005  * lpfc_oas_tgt_store - Store wwpn of target whose luns maybe enabled for
3006  *		      Optimized Access Storage (OAS) operations.
3007  * @dev: class device that is converted into a Scsi_host.
3008  * @attr: device attribute, not used.
3009  * @buf: buffer for passing information.
3010  * @count: Size of the data buffer.
3011  *
3012  * Returns:
3013  * -EINVAL count is invalid, invalid wwpn byte invalid
3014  * -EPERM oas is not supported by hba
3015  * value of count on success
3016  **/
3017 static ssize_t
3018 lpfc_oas_tgt_store(struct device *dev, struct device_attribute *attr,
3019 		   const char *buf, size_t count)
3020 {
3021 	struct Scsi_Host *shost = class_to_shost(dev);
3022 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3023 	unsigned int cnt = count;
3024 	uint8_t wwpn[WWN_SZ];
3025 	int rc;
3026 
3027 	if (!phba->cfg_fof)
3028 		return -EPERM;
3029 
3030 	/* count may include a LF at end of string */
3031 	if (buf[cnt-1] == '\n')
3032 		cnt--;
3033 
3034 	rc = lpfc_wwn_set(buf, cnt, wwpn);
3035 	if (rc)
3036 		return rc;
3037 
3038 	memcpy(phba->cfg_oas_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
3039 	memcpy(phba->sli4_hba.oas_next_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
3040 	if (wwn_to_u64(wwpn) == 0)
3041 		phba->cfg_oas_flags |= OAS_FIND_ANY_TARGET;
3042 	else
3043 		phba->cfg_oas_flags &= ~OAS_FIND_ANY_TARGET;
3044 	phba->cfg_oas_flags &= ~OAS_LUN_VALID;
3045 	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
3046 	return count;
3047 }
3048 static DEVICE_ATTR(lpfc_xlane_tgt, S_IRUGO | S_IWUSR,
3049 		   lpfc_oas_tgt_show, lpfc_oas_tgt_store);
3050 
3051 /**
3052  * lpfc_oas_priority_show - Return wwpn of target whose luns maybe enabled for
3053  *		      Optimized Access Storage (OAS) operations.
3054  * @dev: class device that is converted into a Scsi_host.
3055  * @attr: device attribute, not used.
3056  * @buf: buffer for passing information.
3057  *
3058  * Returns:
3059  * value of count
3060  **/
3061 static ssize_t
3062 lpfc_oas_priority_show(struct device *dev, struct device_attribute *attr,
3063 		       char *buf)
3064 {
3065 	struct Scsi_Host *shost = class_to_shost(dev);
3066 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3067 
3068 	return scnprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_priority);
3069 }
3070 
3071 /**
3072  * lpfc_oas_priority_store - Store wwpn of target whose luns maybe enabled for
3073  *		      Optimized Access Storage (OAS) operations.
3074  * @dev: class device that is converted into a Scsi_host.
3075  * @attr: device attribute, not used.
3076  * @buf: buffer for passing information.
3077  * @count: Size of the data buffer.
3078  *
3079  * Returns:
3080  * -EINVAL count is invalid, invalid wwpn byte invalid
3081  * -EPERM oas is not supported by hba
3082  * value of count on success
3083  **/
3084 static ssize_t
3085 lpfc_oas_priority_store(struct device *dev, struct device_attribute *attr,
3086 			const char *buf, size_t count)
3087 {
3088 	struct Scsi_Host *shost = class_to_shost(dev);
3089 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3090 	unsigned int cnt = count;
3091 	unsigned long val;
3092 	int ret;
3093 
3094 	if (!phba->cfg_fof)
3095 		return -EPERM;
3096 
3097 	/* count may include a LF at end of string */
3098 	if (buf[cnt-1] == '\n')
3099 		cnt--;
3100 
3101 	ret = kstrtoul(buf, 0, &val);
3102 	if (ret || (val > 0x7f))
3103 		return -EINVAL;
3104 
3105 	if (val)
3106 		phba->cfg_oas_priority = (uint8_t)val;
3107 	else
3108 		phba->cfg_oas_priority = phba->cfg_XLanePriority;
3109 	return count;
3110 }
3111 static DEVICE_ATTR(lpfc_xlane_priority, S_IRUGO | S_IWUSR,
3112 		   lpfc_oas_priority_show, lpfc_oas_priority_store);
3113 
3114 /**
3115  * lpfc_oas_vpt_show - Return wwpn of vport whose targets maybe enabled
3116  *		      for Optimized Access Storage (OAS) operations.
3117  * @dev: class device that is converted into a Scsi_host.
3118  * @attr: device attribute, not used.
3119  * @buf: buffer for passing information.
3120  *
3121  * Returns:
3122  * value of count on success
3123  **/
3124 static ssize_t
3125 lpfc_oas_vpt_show(struct device *dev, struct device_attribute *attr,
3126 		  char *buf)
3127 {
3128 	struct Scsi_Host *shost = class_to_shost(dev);
3129 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3130 
3131 	return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
3132 			wwn_to_u64(phba->cfg_oas_vpt_wwpn));
3133 }
3134 
3135 /**
3136  * lpfc_oas_vpt_store - Store wwpn of vport whose targets maybe enabled
3137  *		      for Optimized Access Storage (OAS) operations.
3138  * @dev: class device that is converted into a Scsi_host.
3139  * @attr: device attribute, not used.
3140  * @buf: buffer for passing information.
3141  * @count: Size of the data buffer.
3142  *
3143  * Returns:
3144  * -EINVAL count is invalid, invalid wwpn byte invalid
3145  * -EPERM oas is not supported by hba
3146  * value of count on success
3147  **/
3148 static ssize_t
3149 lpfc_oas_vpt_store(struct device *dev, struct device_attribute *attr,
3150 		   const char *buf, size_t count)
3151 {
3152 	struct Scsi_Host *shost = class_to_shost(dev);
3153 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3154 	unsigned int cnt = count;
3155 	uint8_t wwpn[WWN_SZ];
3156 	int rc;
3157 
3158 	if (!phba->cfg_fof)
3159 		return -EPERM;
3160 
3161 	/* count may include a LF at end of string */
3162 	if (buf[cnt-1] == '\n')
3163 		cnt--;
3164 
3165 	rc = lpfc_wwn_set(buf, cnt, wwpn);
3166 	if (rc)
3167 		return rc;
3168 
3169 	memcpy(phba->cfg_oas_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
3170 	memcpy(phba->sli4_hba.oas_next_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
3171 	if (wwn_to_u64(wwpn) == 0)
3172 		phba->cfg_oas_flags |= OAS_FIND_ANY_VPORT;
3173 	else
3174 		phba->cfg_oas_flags &= ~OAS_FIND_ANY_VPORT;
3175 	phba->cfg_oas_flags &= ~OAS_LUN_VALID;
3176 	if (phba->cfg_oas_priority == 0)
3177 		phba->cfg_oas_priority = phba->cfg_XLanePriority;
3178 	phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
3179 	return count;
3180 }
3181 static DEVICE_ATTR(lpfc_xlane_vpt, S_IRUGO | S_IWUSR,
3182 		   lpfc_oas_vpt_show, lpfc_oas_vpt_store);
3183 
3184 /**
3185  * lpfc_oas_lun_state_show - Return the current state (enabled or disabled)
3186  *			    of whether luns will be enabled or disabled
3187  *			    for Optimized Access Storage (OAS) operations.
3188  * @dev: class device that is converted into a Scsi_host.
3189  * @attr: device attribute, not used.
3190  * @buf: buffer for passing information.
3191  *
3192  * Returns:
3193  * size of formatted string.
3194  **/
3195 static ssize_t
3196 lpfc_oas_lun_state_show(struct device *dev, struct device_attribute *attr,
3197 			char *buf)
3198 {
3199 	struct Scsi_Host *shost = class_to_shost(dev);
3200 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3201 
3202 	return scnprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_state);
3203 }
3204 
3205 /**
3206  * lpfc_oas_lun_state_store - Store the state (enabled or disabled)
3207  *			    of whether luns will be enabled or disabled
3208  *			    for Optimized Access Storage (OAS) operations.
3209  * @dev: class device that is converted into a Scsi_host.
3210  * @attr: device attribute, not used.
3211  * @buf: buffer for passing information.
3212  * @count: Size of the data buffer.
3213  *
3214  * Returns:
3215  * -EINVAL count is invalid, invalid wwpn byte invalid
3216  * -EPERM oas is not supported by hba
3217  * value of count on success
3218  **/
3219 static ssize_t
3220 lpfc_oas_lun_state_store(struct device *dev, struct device_attribute *attr,
3221 			 const char *buf, size_t count)
3222 {
3223 	struct Scsi_Host *shost = class_to_shost(dev);
3224 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3225 	int val = 0;
3226 
3227 	if (!phba->cfg_fof)
3228 		return -EPERM;
3229 
3230 	if (!isdigit(buf[0]))
3231 		return -EINVAL;
3232 
3233 	if (sscanf(buf, "%i", &val) != 1)
3234 		return -EINVAL;
3235 
3236 	if ((val != 0) && (val != 1))
3237 		return -EINVAL;
3238 
3239 	phba->cfg_oas_lun_state = val;
3240 	return strlen(buf);
3241 }
3242 static DEVICE_ATTR(lpfc_xlane_lun_state, S_IRUGO | S_IWUSR,
3243 		   lpfc_oas_lun_state_show, lpfc_oas_lun_state_store);
3244 
3245 /**
3246  * lpfc_oas_lun_status_show - Return the status of the Optimized Access
3247  *                          Storage (OAS) lun returned by the
3248  *                          lpfc_oas_lun_show function.
3249  * @dev: class device that is converted into a Scsi_host.
3250  * @attr: device attribute, not used.
3251  * @buf: buffer for passing information.
3252  *
3253  * Returns:
3254  * size of formatted string.
3255  **/
3256 static ssize_t
3257 lpfc_oas_lun_status_show(struct device *dev, struct device_attribute *attr,
3258 			 char *buf)
3259 {
3260 	struct Scsi_Host *shost = class_to_shost(dev);
3261 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3262 
3263 	if (!(phba->cfg_oas_flags & OAS_LUN_VALID))
3264 		return -EFAULT;
3265 
3266 	return scnprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_status);
3267 }
3268 static DEVICE_ATTR(lpfc_xlane_lun_status, S_IRUGO,
3269 		   lpfc_oas_lun_status_show, NULL);
3270 
3271 
3272 /**
3273  * lpfc_oas_lun_state_set - enable or disable a lun for Optimized Access Storage
3274  *			   (OAS) operations.
3275  * @phba: lpfc_hba pointer.
3276  * @ndlp: pointer to fcp target node.
3277  * @lun: the fc lun for setting oas state.
3278  * @oas_state: the oas state to be set to the lun.
3279  *
3280  * Returns:
3281  * SUCCESS : 0
3282  * -EPERM OAS is not enabled or not supported by this port.
3283  *
3284  */
3285 static size_t
3286 lpfc_oas_lun_state_set(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
3287 		       uint8_t tgt_wwpn[], uint64_t lun,
3288 		       uint32_t oas_state, uint8_t pri)
3289 {
3290 
3291 	int rc = 0;
3292 
3293 	if (!phba->cfg_fof)
3294 		return -EPERM;
3295 
3296 	if (oas_state) {
3297 		if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
3298 					 (struct lpfc_name *)tgt_wwpn,
3299 					 lun, pri))
3300 			rc = -ENOMEM;
3301 	} else {
3302 		lpfc_disable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
3303 				     (struct lpfc_name *)tgt_wwpn, lun, pri);
3304 	}
3305 	return rc;
3306 
3307 }
3308 
3309 /**
3310  * lpfc_oas_lun_get_next - get the next lun that has been enabled for Optimized
3311  *			  Access Storage (OAS) operations.
3312  * @phba: lpfc_hba pointer.
3313  * @vpt_wwpn: wwpn of the vport associated with the returned lun
3314  * @tgt_wwpn: wwpn of the target associated with the returned lun
3315  * @lun_status: status of the lun returned lun
3316  *
3317  * Returns the first or next lun enabled for OAS operations for the vport/target
3318  * specified.  If a lun is found, its vport wwpn, target wwpn and status is
3319  * returned.  If the lun is not found, NOT_OAS_ENABLED_LUN is returned.
3320  *
3321  * Return:
3322  * lun that is OAS enabled for the vport/target
3323  * NOT_OAS_ENABLED_LUN when no oas enabled lun found.
3324  */
3325 static uint64_t
3326 lpfc_oas_lun_get_next(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
3327 		      uint8_t tgt_wwpn[], uint32_t *lun_status,
3328 		      uint32_t *lun_pri)
3329 {
3330 	uint64_t found_lun;
3331 
3332 	if (unlikely(!phba) || !vpt_wwpn || !tgt_wwpn)
3333 		return NOT_OAS_ENABLED_LUN;
3334 	if (lpfc_find_next_oas_lun(phba, (struct lpfc_name *)
3335 				   phba->sli4_hba.oas_next_vpt_wwpn,
3336 				   (struct lpfc_name *)
3337 				   phba->sli4_hba.oas_next_tgt_wwpn,
3338 				   &phba->sli4_hba.oas_next_lun,
3339 				   (struct lpfc_name *)vpt_wwpn,
3340 				   (struct lpfc_name *)tgt_wwpn,
3341 				   &found_lun, lun_status, lun_pri))
3342 		return found_lun;
3343 	else
3344 		return NOT_OAS_ENABLED_LUN;
3345 }
3346 
3347 /**
3348  * lpfc_oas_lun_state_change - enable/disable a lun for OAS operations
3349  * @phba: lpfc_hba pointer.
3350  * @vpt_wwpn: vport wwpn by reference.
3351  * @tgt_wwpn: target wwpn by reference.
3352  * @lun: the fc lun for setting oas state.
3353  * @oas_state: the oas state to be set to the oas_lun.
3354  *
3355  * This routine enables (OAS_LUN_ENABLE) or disables (OAS_LUN_DISABLE)
3356  * a lun for OAS operations.
3357  *
3358  * Return:
3359  * SUCCESS: 0
3360  * -ENOMEM: failed to enable an lun for OAS operations
3361  * -EPERM: OAS is not enabled
3362  */
3363 static ssize_t
3364 lpfc_oas_lun_state_change(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
3365 			  uint8_t tgt_wwpn[], uint64_t lun,
3366 			  uint32_t oas_state, uint8_t pri)
3367 {
3368 
3369 	int rc;
3370 
3371 	rc = lpfc_oas_lun_state_set(phba, vpt_wwpn, tgt_wwpn, lun,
3372 				    oas_state, pri);
3373 	return rc;
3374 }
3375 
3376 /**
3377  * lpfc_oas_lun_show - Return oas enabled luns from a chosen target
3378  * @dev: class device that is converted into a Scsi_host.
3379  * @attr: device attribute, not used.
3380  * @buf: buffer for passing information.
3381  *
3382  * This routine returns a lun enabled for OAS each time the function
3383  * is called.
3384  *
3385  * Returns:
3386  * SUCCESS: size of formatted string.
3387  * -EFAULT: target or vport wwpn was not set properly.
3388  * -EPERM: oas is not enabled.
3389  **/
3390 static ssize_t
3391 lpfc_oas_lun_show(struct device *dev, struct device_attribute *attr,
3392 		  char *buf)
3393 {
3394 	struct Scsi_Host *shost = class_to_shost(dev);
3395 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3396 
3397 	uint64_t oas_lun;
3398 	int len = 0;
3399 
3400 	if (!phba->cfg_fof)
3401 		return -EPERM;
3402 
3403 	if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
3404 		if (!(phba->cfg_oas_flags & OAS_FIND_ANY_VPORT))
3405 			return -EFAULT;
3406 
3407 	if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
3408 		if (!(phba->cfg_oas_flags & OAS_FIND_ANY_TARGET))
3409 			return -EFAULT;
3410 
3411 	oas_lun = lpfc_oas_lun_get_next(phba, phba->cfg_oas_vpt_wwpn,
3412 					phba->cfg_oas_tgt_wwpn,
3413 					&phba->cfg_oas_lun_status,
3414 					&phba->cfg_oas_priority);
3415 	if (oas_lun != NOT_OAS_ENABLED_LUN)
3416 		phba->cfg_oas_flags |= OAS_LUN_VALID;
3417 
3418 	len += scnprintf(buf + len, PAGE_SIZE-len, "0x%llx", oas_lun);
3419 
3420 	return len;
3421 }
3422 
3423 /**
3424  * lpfc_oas_lun_store - Sets the OAS state for lun
3425  * @dev: class device that is converted into a Scsi_host.
3426  * @attr: device attribute, not used.
3427  * @buf: buffer for passing information.
3428  *
3429  * This function sets the OAS state for lun.  Before this function is called,
3430  * the vport wwpn, target wwpn, and oas state need to be set.
3431  *
3432  * Returns:
3433  * SUCCESS: size of formatted string.
3434  * -EFAULT: target or vport wwpn was not set properly.
3435  * -EPERM: oas is not enabled.
3436  * size of formatted string.
3437  **/
3438 static ssize_t
3439 lpfc_oas_lun_store(struct device *dev, struct device_attribute *attr,
3440 		   const char *buf, size_t count)
3441 {
3442 	struct Scsi_Host *shost = class_to_shost(dev);
3443 	struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3444 	uint64_t scsi_lun;
3445 	uint32_t pri;
3446 	ssize_t rc;
3447 
3448 	if (!phba->cfg_fof)
3449 		return -EPERM;
3450 
3451 	if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
3452 		return -EFAULT;
3453 
3454 	if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
3455 		return -EFAULT;
3456 
3457 	if (!isdigit(buf[0]))
3458 		return -EINVAL;
3459 
3460 	if (sscanf(buf, "0x%llx", &scsi_lun) != 1)
3461 		return -EINVAL;
3462 
3463 	pri = phba->cfg_oas_priority;
3464 	if (pri == 0)
3465 		pri = phba->cfg_XLanePriority;
3466 
3467 	lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3468 			"3372 Try to set vport 0x%llx target 0x%llx lun:0x%llx "
3469 			"priority 0x%x with oas state %d\n",
3470 			wwn_to_u64(phba->cfg_oas_vpt_wwpn),
3471 			wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun,
3472 			pri, phba->cfg_oas_lun_state);
3473 
3474 	rc = lpfc_oas_lun_state_change(phba, phba->cfg_oas_vpt_wwpn,
3475 				       phba->cfg_oas_tgt_wwpn, scsi_lun,
3476 				       phba->cfg_oas_lun_state, pri);
3477 	if (rc)
3478 		return rc;
3479 
3480 	return count;
3481 }
3482 static DEVICE_ATTR(lpfc_xlane_lun, S_IRUGO | S_IWUSR,
3483 		   lpfc_oas_lun_show, lpfc_oas_lun_store);
3484 
3485 int lpfc_enable_nvmet_cnt;
3486 unsigned long long lpfc_enable_nvmet[LPFC_NVMET_MAX_PORTS] = {
3487 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3488 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
3489 module_param_array(lpfc_enable_nvmet, ullong, &lpfc_enable_nvmet_cnt, 0444);
3490 MODULE_PARM_DESC(lpfc_enable_nvmet, "Enable HBA port(s) WWPN as a NVME Target");
3491 
3492 static int lpfc_poll = 0;
3493 module_param(lpfc_poll, int, S_IRUGO);
3494 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
3495 		 " 0 - none,"
3496 		 " 1 - poll with interrupts enabled"
3497 		 " 3 - poll and disable FCP ring interrupts");
3498 
3499 static DEVICE_ATTR_RW(lpfc_poll);
3500 
3501 int lpfc_no_hba_reset_cnt;
3502 unsigned long lpfc_no_hba_reset[MAX_HBAS_NO_RESET] = {
3503 	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
3504 module_param_array(lpfc_no_hba_reset, ulong, &lpfc_no_hba_reset_cnt, 0444);
3505 MODULE_PARM_DESC(lpfc_no_hba_reset, "WWPN of HBAs that should not be reset");
3506 
3507 LPFC_ATTR(sli_mode, 0, 0, 3,
3508 	"SLI mode selector:"
3509 	" 0 - auto (SLI-3 if supported),"
3510 	" 2 - select SLI-2 even on SLI-3 capable HBAs,"
3511 	" 3 - select SLI-3");
3512 
3513 LPFC_ATTR_R(enable_npiv, 1, 0, 1,
3514 	"Enable NPIV functionality");
3515 
3516 LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2,
3517 	"FCF Fast failover=1 Priority failover=2");
3518 
3519 /*
3520 # lpfc_enable_rrq: Track XRI/OXID reuse after IO failures
3521 #	0x0 = disabled, XRI/OXID use not tracked.
3522 #	0x1 = XRI/OXID reuse is timed with ratov, RRQ sent.
3523 #	0x2 = XRI/OXID reuse is timed with ratov, No RRQ sent.
3524 */
3525 LPFC_ATTR_R(enable_rrq, 2, 0, 2,
3526 	"Enable RRQ functionality");
3527 
3528 /*
3529 # lpfc_suppress_link_up:  Bring link up at initialization
3530 #            0x0  = bring link up (issue MBX_INIT_LINK)
3531 #            0x1  = do NOT bring link up at initialization(MBX_INIT_LINK)
3532 #            0x2  = never bring up link
3533 # Default value is 0.
3534 */
3535 LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK,
3536 		LPFC_DELAY_INIT_LINK_INDEFINITELY,
3537 		"Suppress Link Up at initialization");
3538 
3539 static ssize_t
3540 lpfc_pls_show(struct device *dev, struct device_attribute *attr, char *buf)
3541 {
3542 	struct Scsi_Host  *shost = class_to_shost(dev);
3543 	struct lpfc_hba   *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3544 
3545 	return scnprintf(buf, PAGE_SIZE, "%d\n",
3546 			 phba->sli4_hba.pc_sli4_params.pls);
3547 }
3548 static DEVICE_ATTR(pls, 0444,
3549 			 lpfc_pls_show, NULL);
3550 
3551 static ssize_t
3552 lpfc_pt_show(struct device *dev, struct device_attribute *attr, char *buf)
3553 {
3554 	struct Scsi_Host  *shost = class_to_shost(dev);
3555 	struct lpfc_hba   *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3556 
3557 	return scnprintf(buf, PAGE_SIZE, "%d\n",
3558 			 (phba->hba_flag & HBA_PERSISTENT_TOPO) ? 1 : 0);
3559 }
3560 static DEVICE_ATTR(pt, 0444,
3561 			 lpfc_pt_show, NULL);
3562 
3563 /*
3564 # lpfc_cnt: Number of IOCBs allocated for ELS, CT, and ABTS
3565 #       1 - (1024)
3566 #       2 - (2048)
3567 #       3 - (3072)
3568 #       4 - (4096)
3569 #       5 - (5120)
3570 */
3571 static ssize_t
3572 lpfc_iocb_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
3573 {
3574 	struct Scsi_Host  *shost = class_to_shost(dev);
3575 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3576 
3577 	return scnprintf(buf, PAGE_SIZE, "%d\n", phba->iocb_max);
3578 }
3579 
3580 static DEVICE_ATTR(iocb_hw, S_IRUGO,
3581 			 lpfc_iocb_hw_show, NULL);
3582 static ssize_t
3583 lpfc_txq_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
3584 {
3585 	struct Scsi_Host  *shost = class_to_shost(dev);
3586 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3587 	struct lpfc_sli_ring *pring = lpfc_phba_elsring(phba);
3588 
3589 	return scnprintf(buf, PAGE_SIZE, "%d\n",
3590 			pring ? pring->txq_max : 0);
3591 }
3592 
3593 static DEVICE_ATTR(txq_hw, S_IRUGO,
3594 			 lpfc_txq_hw_show, NULL);
3595 static ssize_t
3596 lpfc_txcmplq_hw_show(struct device *dev, struct device_attribute *attr,
3597  char *buf)
3598 {
3599 	struct Scsi_Host  *shost = class_to_shost(dev);
3600 	struct lpfc_hba   *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3601 	struct lpfc_sli_ring *pring = lpfc_phba_elsring(phba);
3602 
3603 	return scnprintf(buf, PAGE_SIZE, "%d\n",
3604 			pring ? pring->txcmplq_max : 0);
3605 }
3606 
3607 static DEVICE_ATTR(txcmplq_hw, S_IRUGO,
3608 			 lpfc_txcmplq_hw_show, NULL);
3609 
3610 /*
3611 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
3612 # until the timer expires. Value range is [0,255]. Default value is 30.
3613 */
3614 static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
3615 static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO;
3616 module_param(lpfc_nodev_tmo, int, 0);
3617 MODULE_PARM_DESC(lpfc_nodev_tmo,
3618 		 "Seconds driver will hold I/O waiting "
3619 		 "for a device to come back");
3620 
3621 /**
3622  * lpfc_nodev_tmo_show - Return the hba dev loss timeout value
3623  * @dev: class converted to a Scsi_host structure.
3624  * @attr: device attribute, not used.
3625  * @buf: on return contains the dev loss timeout in decimal.
3626  *
3627  * Returns: size of formatted string.
3628  **/
3629 static ssize_t
3630 lpfc_nodev_tmo_show(struct device *dev, struct device_attribute *attr,
3631 		    char *buf)
3632 {
3633 	struct Scsi_Host  *shost = class_to_shost(dev);
3634 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3635 
3636 	return scnprintf(buf, PAGE_SIZE, "%d\n",	vport->cfg_devloss_tmo);
3637 }
3638 
3639 /**
3640  * lpfc_nodev_tmo_init - Set the hba nodev timeout value
3641  * @vport: lpfc vport structure pointer.
3642  * @val: contains the nodev timeout value.
3643  *
3644  * Description:
3645  * If the devloss tmo is already set then nodev tmo is set to devloss tmo,
3646  * a kernel error message is printed and zero is returned.
3647  * Else if val is in range then nodev tmo and devloss tmo are set to val.
3648  * Otherwise nodev tmo is set to the default value.
3649  *
3650  * Returns:
3651  * zero if already set or if val is in range
3652  * -EINVAL val out of range
3653  **/
3654 static int
3655 lpfc_nodev_tmo_init(struct lpfc_vport *vport, int val)
3656 {
3657 	if (vport->cfg_devloss_tmo != LPFC_DEF_DEVLOSS_TMO) {
3658 		vport->cfg_nodev_tmo = vport->cfg_devloss_tmo;
3659 		if (val != LPFC_DEF_DEVLOSS_TMO)
3660 			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3661 					 "0407 Ignoring lpfc_nodev_tmo module "
3662 					 "parameter because lpfc_devloss_tmo "
3663 					 "is set.\n");
3664 		return 0;
3665 	}
3666 
3667 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3668 		vport->cfg_nodev_tmo = val;
3669 		vport->cfg_devloss_tmo = val;
3670 		return 0;
3671 	}
3672 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3673 			 "0400 lpfc_nodev_tmo attribute cannot be set to"
3674 			 " %d, allowed range is [%d, %d]\n",
3675 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3676 	vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
3677 	return -EINVAL;
3678 }
3679 
3680 /**
3681  * lpfc_update_rport_devloss_tmo - Update dev loss tmo value
3682  * @vport: lpfc vport structure pointer.
3683  *
3684  * Description:
3685  * Update all the ndlp's dev loss tmo with the vport devloss tmo value.
3686  **/
3687 static void
3688 lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport)
3689 {
3690 	struct Scsi_Host  *shost;
3691 	struct lpfc_nodelist  *ndlp;
3692 #if (IS_ENABLED(CONFIG_NVME_FC))
3693 	struct lpfc_nvme_rport *rport;
3694 	struct nvme_fc_remote_port *remoteport = NULL;
3695 #endif
3696 
3697 	shost = lpfc_shost_from_vport(vport);
3698 	spin_lock_irq(shost->host_lock);
3699 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3700 		if (!NLP_CHK_NODE_ACT(ndlp))
3701 			continue;
3702 		if (ndlp->rport)
3703 			ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo;
3704 #if (IS_ENABLED(CONFIG_NVME_FC))
3705 		spin_lock(&vport->phba->hbalock);
3706 		rport = lpfc_ndlp_get_nrport(ndlp);
3707 		if (rport)
3708 			remoteport = rport->remoteport;
3709 		spin_unlock(&vport->phba->hbalock);
3710 		if (rport && remoteport)
3711 			nvme_fc_set_remoteport_devloss(remoteport,
3712 						       vport->cfg_devloss_tmo);
3713 #endif
3714 	}
3715 	spin_unlock_irq(shost->host_lock);
3716 }
3717 
3718 /**
3719  * lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values
3720  * @vport: lpfc vport structure pointer.
3721  * @val: contains the tmo value.
3722  *
3723  * Description:
3724  * If the devloss tmo is already set or the vport dev loss tmo has changed
3725  * then a kernel error message is printed and zero is returned.
3726  * Else if val is in range then nodev tmo and devloss tmo are set to val.
3727  * Otherwise nodev tmo is set to the default value.
3728  *
3729  * Returns:
3730  * zero if already set or if val is in range
3731  * -EINVAL val out of range
3732  **/
3733 static int
3734 lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val)
3735 {
3736 	if (vport->dev_loss_tmo_changed ||
3737 	    (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
3738 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3739 				 "0401 Ignoring change to lpfc_nodev_tmo "
3740 				 "because lpfc_devloss_tmo is set.\n");
3741 		return 0;
3742 	}
3743 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3744 		vport->cfg_nodev_tmo = val;
3745 		vport->cfg_devloss_tmo = val;
3746 		/*
3747 		 * For compat: set the fc_host dev loss so new rports
3748 		 * will get the value.
3749 		 */
3750 		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3751 		lpfc_update_rport_devloss_tmo(vport);
3752 		return 0;
3753 	}
3754 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3755 			 "0403 lpfc_nodev_tmo attribute cannot be set to "
3756 			 "%d, allowed range is [%d, %d]\n",
3757 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3758 	return -EINVAL;
3759 }
3760 
3761 lpfc_vport_param_store(nodev_tmo)
3762 
3763 static DEVICE_ATTR_RW(lpfc_nodev_tmo);
3764 
3765 /*
3766 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
3767 # disappear until the timer expires. Value range is [0,255]. Default
3768 # value is 30.
3769 */
3770 module_param(lpfc_devloss_tmo, int, S_IRUGO);
3771 MODULE_PARM_DESC(lpfc_devloss_tmo,
3772 		 "Seconds driver will hold I/O waiting "
3773 		 "for a device to come back");
3774 lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
3775 		      LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
3776 lpfc_vport_param_show(devloss_tmo)
3777 
3778 /**
3779  * lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit
3780  * @vport: lpfc vport structure pointer.
3781  * @val: contains the tmo value.
3782  *
3783  * Description:
3784  * If val is in a valid range then set the vport nodev tmo,
3785  * devloss tmo, also set the vport dev loss tmo changed flag.
3786  * Else a kernel error message is printed.
3787  *
3788  * Returns:
3789  * zero if val is in range
3790  * -EINVAL val out of range
3791  **/
3792 static int
3793 lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val)
3794 {
3795 	if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3796 		vport->cfg_nodev_tmo = val;
3797 		vport->cfg_devloss_tmo = val;
3798 		vport->dev_loss_tmo_changed = 1;
3799 		fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3800 		lpfc_update_rport_devloss_tmo(vport);
3801 		return 0;
3802 	}
3803 
3804 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3805 			 "0404 lpfc_devloss_tmo attribute cannot be set to "
3806 			 "%d, allowed range is [%d, %d]\n",
3807 			 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3808 	return -EINVAL;
3809 }
3810 
3811 lpfc_vport_param_store(devloss_tmo)
3812 static DEVICE_ATTR_RW(lpfc_devloss_tmo);
3813 
3814 /*
3815  * lpfc_suppress_rsp: Enable suppress rsp feature is firmware supports it
3816  * lpfc_suppress_rsp = 0  Disable
3817  * lpfc_suppress_rsp = 1  Enable (default)
3818  *
3819  */
3820 LPFC_ATTR_R(suppress_rsp, 1, 0, 1,
3821 	    "Enable suppress rsp feature is firmware supports it");
3822 
3823 /*
3824  * lpfc_nvmet_mrq: Specify number of RQ pairs for processing NVMET cmds
3825  * lpfc_nvmet_mrq = 0  driver will calcualte optimal number of RQ pairs
3826  * lpfc_nvmet_mrq = 1  use a single RQ pair
3827  * lpfc_nvmet_mrq >= 2  use specified RQ pairs for MRQ
3828  *
3829  */
3830 LPFC_ATTR_R(nvmet_mrq,
3831 	    LPFC_NVMET_MRQ_AUTO, LPFC_NVMET_MRQ_AUTO, LPFC_NVMET_MRQ_MAX,
3832 	    "Specify number of RQ pairs for processing NVMET cmds");
3833 
3834 /*
3835  * lpfc_nvmet_mrq_post: Specify number of RQ buffer to initially post
3836  * to each NVMET RQ. Range 64 to 2048, default is 512.
3837  */
3838 LPFC_ATTR_R(nvmet_mrq_post,
3839 	    LPFC_NVMET_RQE_DEF_POST, LPFC_NVMET_RQE_MIN_POST,
3840 	    LPFC_NVMET_RQE_DEF_COUNT,
3841 	    "Specify number of RQ buffers to initially post");
3842 
3843 /*
3844  * lpfc_enable_fc4_type: Defines what FC4 types are supported.
3845  * Supported Values:  1 - register just FCP
3846  *                    3 - register both FCP and NVME
3847  * Supported values are [1,3]. Default value is 3
3848  */
3849 LPFC_ATTR_R(enable_fc4_type, LPFC_ENABLE_BOTH,
3850 	    LPFC_ENABLE_FCP, LPFC_ENABLE_BOTH,
3851 	    "Enable FC4 Protocol support - FCP / NVME");
3852 
3853 /*
3854 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being
3855 # deluged with LOTS of information.
3856 # You can set a bit mask to record specific types of verbose messages:
3857 # See lpfc_logmsh.h for definitions.
3858 */
3859 LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff,
3860 		       "Verbose logging bit-mask");
3861 
3862 /*
3863 # lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters
3864 # objects that have been registered with the nameserver after login.
3865 */
3866 LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,
3867 		  "Deregister nameserver objects before LOGO");
3868 
3869 /*
3870 # lun_queue_depth:  This parameter is used to limit the number of outstanding
3871 # commands per FCP LUN. Value range is [1,512]. Default value is 30.
3872 # If this parameter value is greater than 1/8th the maximum number of exchanges
3873 # supported by the HBA port, then the lun queue depth will be reduced to
3874 # 1/8th the maximum number of exchanges.
3875 */
3876 LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 512,
3877 		  "Max number of FCP commands we can queue to a specific LUN");
3878 
3879 /*
3880 # tgt_queue_depth:  This parameter is used to limit the number of outstanding
3881 # commands per target port. Value range is [10,65535]. Default value is 65535.
3882 */
3883 static uint lpfc_tgt_queue_depth = LPFC_MAX_TGT_QDEPTH;
3884 module_param(lpfc_tgt_queue_depth, uint, 0444);
3885 MODULE_PARM_DESC(lpfc_tgt_queue_depth, "Set max Target queue depth");
3886 lpfc_vport_param_show(tgt_queue_depth);
3887 lpfc_vport_param_init(tgt_queue_depth, LPFC_MAX_TGT_QDEPTH,
3888 		      LPFC_MIN_TGT_QDEPTH, LPFC_MAX_TGT_QDEPTH);
3889 
3890 /**
3891  * lpfc_tgt_queue_depth_store: Sets an attribute value.
3892  * @phba: pointer the the adapter structure.
3893  * @val: integer attribute value.
3894  *
3895  * Description: Sets the parameter to the new value.
3896  *
3897  * Returns:
3898  * zero on success
3899  * -EINVAL if val is invalid
3900  */
3901 static int
3902 lpfc_tgt_queue_depth_set(struct lpfc_vport *vport, uint val)
3903 {
3904 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3905 	struct lpfc_nodelist *ndlp;
3906 
3907 	if (!lpfc_rangecheck(val, LPFC_MIN_TGT_QDEPTH, LPFC_MAX_TGT_QDEPTH))
3908 		return -EINVAL;
3909 
3910 	if (val == vport->cfg_tgt_queue_depth)
3911 		return 0;
3912 
3913 	spin_lock_irq(shost->host_lock);
3914 	vport->cfg_tgt_queue_depth = val;
3915 
3916 	/* Next loop thru nodelist and change cmd_qdepth */
3917 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp)
3918 		ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
3919 
3920 	spin_unlock_irq(shost->host_lock);
3921 	return 0;
3922 }
3923 
3924 lpfc_vport_param_store(tgt_queue_depth);
3925 static DEVICE_ATTR_RW(lpfc_tgt_queue_depth);
3926 
3927 /*
3928 # hba_queue_depth:  This parameter is used to limit the number of outstanding
3929 # commands per lpfc HBA. Value range is [32,8192]. If this parameter
3930 # value is greater than the maximum number of exchanges supported by the HBA,
3931 # then maximum number of exchanges supported by the HBA is used to determine
3932 # the hba_queue_depth.
3933 */
3934 LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192,
3935 	    "Max number of FCP commands we can queue to a lpfc HBA");
3936 
3937 /*
3938 # peer_port_login:  This parameter allows/prevents logins
3939 # between peer ports hosted on the same physical port.
3940 # When this parameter is set 0 peer ports of same physical port
3941 # are not allowed to login to each other.
3942 # When this parameter is set 1 peer ports of same physical port
3943 # are allowed to login to each other.
3944 # Default value of this parameter is 0.
3945 */
3946 LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1,
3947 		  "Allow peer ports on the same physical port to login to each "
3948 		  "other.");
3949 
3950 /*
3951 # restrict_login:  This parameter allows/prevents logins
3952 # between Virtual Ports and remote initiators.
3953 # When this parameter is not set (0) Virtual Ports will accept PLOGIs from
3954 # other initiators and will attempt to PLOGI all remote ports.
3955 # When this parameter is set (1) Virtual Ports will reject PLOGIs from
3956 # remote ports and will not attempt to PLOGI to other initiators.
3957 # This parameter does not restrict to the physical port.
3958 # This parameter does not restrict logins to Fabric resident remote ports.
3959 # Default value of this parameter is 1.
3960 */
3961 static int lpfc_restrict_login = 1;
3962 module_param(lpfc_restrict_login, int, S_IRUGO);
3963 MODULE_PARM_DESC(lpfc_restrict_login,
3964 		 "Restrict virtual ports login to remote initiators.");
3965 lpfc_vport_param_show(restrict_login);
3966 
3967 /**
3968  * lpfc_restrict_login_init - Set the vport restrict login flag
3969  * @vport: lpfc vport structure pointer.
3970  * @val: contains the restrict login value.
3971  *
3972  * Description:
3973  * If val is not in a valid range then log a kernel error message and set
3974  * the vport restrict login to one.
3975  * If the port type is physical clear the restrict login flag and return.
3976  * Else set the restrict login flag to val.
3977  *
3978  * Returns:
3979  * zero if val is in range
3980  * -EINVAL val out of range
3981  **/
3982 static int
3983 lpfc_restrict_login_init(struct lpfc_vport *vport, int val)
3984 {
3985 	if (val < 0 || val > 1) {
3986 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3987 				 "0422 lpfc_restrict_login attribute cannot "
3988 				 "be set to %d, allowed range is [0, 1]\n",
3989 				 val);
3990 		vport->cfg_restrict_login = 1;
3991 		return -EINVAL;
3992 	}
3993 	if (vport->port_type == LPFC_PHYSICAL_PORT) {
3994 		vport->cfg_restrict_login = 0;
3995 		return 0;
3996 	}
3997 	vport->cfg_restrict_login = val;
3998 	return 0;
3999 }
4000 
4001 /**
4002  * lpfc_restrict_login_set - Set the vport restrict login flag
4003  * @vport: lpfc vport structure pointer.
4004  * @val: contains the restrict login value.
4005  *
4006  * Description:
4007  * If val is not in a valid range then log a kernel error message and set
4008  * the vport restrict login to one.
4009  * If the port type is physical and the val is not zero log a kernel
4010  * error message, clear the restrict login flag and return zero.
4011  * Else set the restrict login flag to val.
4012  *
4013  * Returns:
4014  * zero if val is in range
4015  * -EINVAL val out of range
4016  **/
4017 static int
4018 lpfc_restrict_login_set(struct lpfc_vport *vport, int val)
4019 {
4020 	if (val < 0 || val > 1) {
4021 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4022 				 "0425 lpfc_restrict_login attribute cannot "
4023 				 "be set to %d, allowed range is [0, 1]\n",
4024 				 val);
4025 		vport->cfg_restrict_login = 1;
4026 		return -EINVAL;
4027 	}
4028 	if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) {
4029 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4030 				 "0468 lpfc_restrict_login must be 0 for "
4031 				 "Physical ports.\n");
4032 		vport->cfg_restrict_login = 0;
4033 		return 0;
4034 	}
4035 	vport->cfg_restrict_login = val;
4036 	return 0;
4037 }
4038 lpfc_vport_param_store(restrict_login);
4039 static DEVICE_ATTR_RW(lpfc_restrict_login);
4040 
4041 /*
4042 # Some disk devices have a "select ID" or "select Target" capability.
4043 # From a protocol standpoint "select ID" usually means select the
4044 # Fibre channel "ALPA".  In the FC-AL Profile there is an "informative
4045 # annex" which contains a table that maps a "select ID" (a number
4046 # between 0 and 7F) to an ALPA.  By default, for compatibility with
4047 # older drivers, the lpfc driver scans this table from low ALPA to high
4048 # ALPA.
4049 #
4050 # Turning on the scan-down variable (on  = 1, off = 0) will
4051 # cause the lpfc driver to use an inverted table, effectively
4052 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
4053 #
4054 # (Note: This "select ID" functionality is a LOOP ONLY characteristic
4055 # and will not work across a fabric. Also this parameter will take
4056 # effect only in the case when ALPA map is not available.)
4057 */
4058 LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1,
4059 		  "Start scanning for devices from highest ALPA to lowest");
4060 
4061 /*
4062 # lpfc_topology:  link topology for init link
4063 #            0x0  = attempt loop mode then point-to-point
4064 #            0x01 = internal loopback mode
4065 #            0x02 = attempt point-to-point mode only
4066 #            0x04 = attempt loop mode only
4067 #            0x06 = attempt point-to-point mode then loop
4068 # Set point-to-point mode if you want to run as an N_Port.
4069 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
4070 # Default value is 0.
4071 */
4072 LPFC_ATTR(topology, 0, 0, 6,
4073 	"Select Fibre Channel topology");
4074 
4075 /**
4076  * lpfc_topology_set - Set the adapters topology field
4077  * @phba: lpfc_hba pointer.
4078  * @val: topology value.
4079  *
4080  * Description:
4081  * If val is in a valid range then set the adapter's topology field and
4082  * issue a lip; if the lip fails reset the topology to the old value.
4083  *
4084  * If the value is not in range log a kernel error message and return an error.
4085  *
4086  * Returns:
4087  * zero if val is in range and lip okay
4088  * non-zero return value from lpfc_issue_lip()
4089  * -EINVAL val out of range
4090  **/
4091 static ssize_t
4092 lpfc_topology_store(struct device *dev, struct device_attribute *attr,
4093 			const char *buf, size_t count)
4094 {
4095 	struct Scsi_Host  *shost = class_to_shost(dev);
4096 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4097 	struct lpfc_hba   *phba = vport->phba;
4098 	int val = 0;
4099 	int nolip = 0;
4100 	const char *val_buf = buf;
4101 	int err;
4102 	uint32_t prev_val;
4103 
4104 	if (!strncmp(buf, "nolip ", strlen("nolip "))) {
4105 		nolip = 1;
4106 		val_buf = &buf[strlen("nolip ")];
4107 	}
4108 
4109 	if (!isdigit(val_buf[0]))
4110 		return -EINVAL;
4111 	if (sscanf(val_buf, "%i", &val) != 1)
4112 		return -EINVAL;
4113 
4114 	if (val >= 0 && val <= 6) {
4115 		prev_val = phba->cfg_topology;
4116 		if (phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G &&
4117 			val == 4) {
4118 			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4119 				"3113 Loop mode not supported at speed %d\n",
4120 				val);
4121 			return -EINVAL;
4122 		}
4123 		/*
4124 		 * The 'topology' is not a configurable parameter if :
4125 		 *   - persistent topology enabled
4126 		 *   - G7 adapters
4127 		 *   - G6 with no private loop support
4128 		 */
4129 
4130 		if (((phba->hba_flag & HBA_PERSISTENT_TOPO) ||
4131 		     (!phba->sli4_hba.pc_sli4_params.pls &&
4132 		     phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC) ||
4133 		     phba->pcidev->device == PCI_DEVICE_ID_LANCER_G7_FC) &&
4134 		    val == 4) {
4135 			lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4136 				"3114 Loop mode not supported\n");
4137 			return -EINVAL;
4138 		}
4139 		phba->cfg_topology = val;
4140 		if (nolip)
4141 			return strlen(buf);
4142 
4143 		lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4144 			"3054 lpfc_topology changed from %d to %d\n",
4145 			prev_val, val);
4146 		if (prev_val != val && phba->sli_rev == LPFC_SLI_REV4)
4147 			phba->fc_topology_changed = 1;
4148 		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
4149 		if (err) {
4150 			phba->cfg_topology = prev_val;
4151 			return -EINVAL;
4152 		} else
4153 			return strlen(buf);
4154 	}
4155 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4156 		"%d:0467 lpfc_topology attribute cannot be set to %d, "
4157 		"allowed range is [0, 6]\n",
4158 		phba->brd_no, val);
4159 	return -EINVAL;
4160 }
4161 
4162 lpfc_param_show(topology)
4163 static DEVICE_ATTR_RW(lpfc_topology);
4164 
4165 /**
4166  * lpfc_static_vport_show: Read callback function for
4167  *   lpfc_static_vport sysfs file.
4168  * @dev: Pointer to class device object.
4169  * @attr: device attribute structure.
4170  * @buf: Data buffer.
4171  *
4172  * This function is the read call back function for
4173  * lpfc_static_vport sysfs file. The lpfc_static_vport
4174  * sysfs file report the mageability of the vport.
4175  **/
4176 static ssize_t
4177 lpfc_static_vport_show(struct device *dev, struct device_attribute *attr,
4178 			 char *buf)
4179 {
4180 	struct Scsi_Host  *shost = class_to_shost(dev);
4181 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4182 	if (vport->vport_flag & STATIC_VPORT)
4183 		sprintf(buf, "1\n");
4184 	else
4185 		sprintf(buf, "0\n");
4186 
4187 	return strlen(buf);
4188 }
4189 
4190 /*
4191  * Sysfs attribute to control the statistical data collection.
4192  */
4193 static DEVICE_ATTR_RO(lpfc_static_vport);
4194 
4195 /**
4196  * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
4197  * @dev: Pointer to class device.
4198  * @buf: Data buffer.
4199  * @count: Size of the data buffer.
4200  *
4201  * This function get called when a user write to the lpfc_stat_data_ctrl
4202  * sysfs file. This function parse the command written to the sysfs file
4203  * and take appropriate action. These commands are used for controlling
4204  * driver statistical data collection.
4205  * Following are the command this function handles.
4206  *
4207  *    setbucket <bucket_type> <base> <step>
4208  *			       = Set the latency buckets.
4209  *    destroybucket            = destroy all the buckets.
4210  *    start                    = start data collection
4211  *    stop                     = stop data collection
4212  *    reset                    = reset the collected data
4213  **/
4214 static ssize_t
4215 lpfc_stat_data_ctrl_store(struct device *dev, struct device_attribute *attr,
4216 			  const char *buf, size_t count)
4217 {
4218 	struct Scsi_Host  *shost = class_to_shost(dev);
4219 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4220 	struct lpfc_hba   *phba = vport->phba;
4221 #define LPFC_MAX_DATA_CTRL_LEN 1024
4222 	static char bucket_data[LPFC_MAX_DATA_CTRL_LEN];
4223 	unsigned long i;
4224 	char *str_ptr, *token;
4225 	struct lpfc_vport **vports;
4226 	struct Scsi_Host *v_shost;
4227 	char *bucket_type_str, *base_str, *step_str;
4228 	unsigned long base, step, bucket_type;
4229 
4230 	if (!strncmp(buf, "setbucket", strlen("setbucket"))) {
4231 		if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1))
4232 			return -EINVAL;
4233 
4234 		strncpy(bucket_data, buf, LPFC_MAX_DATA_CTRL_LEN);
4235 		str_ptr = &bucket_data[0];
4236 		/* Ignore this token - this is command token */
4237 		token = strsep(&str_ptr, "\t ");
4238 		if (!token)
4239 			return -EINVAL;
4240 
4241 		bucket_type_str = strsep(&str_ptr, "\t ");
4242 		if (!bucket_type_str)
4243 			return -EINVAL;
4244 
4245 		if (!strncmp(bucket_type_str, "linear", strlen("linear")))
4246 			bucket_type = LPFC_LINEAR_BUCKET;
4247 		else if (!strncmp(bucket_type_str, "power2", strlen("power2")))
4248 			bucket_type = LPFC_POWER2_BUCKET;
4249 		else
4250 			return -EINVAL;
4251 
4252 		base_str = strsep(&str_ptr, "\t ");
4253 		if (!base_str)
4254 			return -EINVAL;
4255 		base = simple_strtoul(base_str, NULL, 0);
4256 
4257 		step_str = strsep(&str_ptr, "\t ");
4258 		if (!step_str)
4259 			return -EINVAL;
4260 		step = simple_strtoul(step_str, NULL, 0);
4261 		if (!step)
4262 			return -EINVAL;
4263 
4264 		/* Block the data collection for every vport */
4265 		vports = lpfc_create_vport_work_array(phba);
4266 		if (vports == NULL)
4267 			return -ENOMEM;
4268 
4269 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4270 			v_shost = lpfc_shost_from_vport(vports[i]);
4271 			spin_lock_irq(v_shost->host_lock);
4272 			/* Block and reset data collection */
4273 			vports[i]->stat_data_blocked = 1;
4274 			if (vports[i]->stat_data_enabled)
4275 				lpfc_vport_reset_stat_data(vports[i]);
4276 			spin_unlock_irq(v_shost->host_lock);
4277 		}
4278 
4279 		/* Set the bucket attributes */
4280 		phba->bucket_type = bucket_type;
4281 		phba->bucket_base = base;
4282 		phba->bucket_step = step;
4283 
4284 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4285 			v_shost = lpfc_shost_from_vport(vports[i]);
4286 
4287 			/* Unblock data collection */
4288 			spin_lock_irq(v_shost->host_lock);
4289 			vports[i]->stat_data_blocked = 0;
4290 			spin_unlock_irq(v_shost->host_lock);
4291 		}
4292 		lpfc_destroy_vport_work_array(phba, vports);
4293 		return strlen(buf);
4294 	}
4295 
4296 	if (!strncmp(buf, "destroybucket", strlen("destroybucket"))) {
4297 		vports = lpfc_create_vport_work_array(phba);
4298 		if (vports == NULL)
4299 			return -ENOMEM;
4300 
4301 		for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4302 			v_shost = lpfc_shost_from_vport(vports[i]);
4303 			spin_lock_irq(shost->host_lock);
4304 			vports[i]->stat_data_blocked = 1;
4305 			lpfc_free_bucket(vport);
4306 			vport->stat_data_enabled = 0;
4307 			vports[i]->stat_data_blocked = 0;
4308 			spin_unlock_irq(shost->host_lock);
4309 		}
4310 		lpfc_destroy_vport_work_array(phba, vports);
4311 		phba->bucket_type = LPFC_NO_BUCKET;
4312 		phba->bucket_base = 0;
4313 		phba->bucket_step = 0;
4314 		return strlen(buf);
4315 	}
4316 
4317 	if (!strncmp(buf, "start", strlen("start"))) {
4318 		/* If no buckets configured return error */
4319 		if (phba->bucket_type == LPFC_NO_BUCKET)
4320 			return -EINVAL;
4321 		spin_lock_irq(shost->host_lock);
4322 		if (vport->stat_data_enabled) {
4323 			spin_unlock_irq(shost->host_lock);
4324 			return strlen(buf);
4325 		}
4326 		lpfc_alloc_bucket(vport);
4327 		vport->stat_data_enabled = 1;
4328 		spin_unlock_irq(shost->host_lock);
4329 		return strlen(buf);
4330 	}
4331 
4332 	if (!strncmp(buf, "stop", strlen("stop"))) {
4333 		spin_lock_irq(shost->host_lock);
4334 		if (vport->stat_data_enabled == 0) {
4335 			spin_unlock_irq(shost->host_lock);
4336 			return strlen(buf);
4337 		}
4338 		lpfc_free_bucket(vport);
4339 		vport->stat_data_enabled = 0;
4340 		spin_unlock_irq(shost->host_lock);
4341 		return strlen(buf);
4342 	}
4343 
4344 	if (!strncmp(buf, "reset", strlen("reset"))) {
4345 		if ((phba->bucket_type == LPFC_NO_BUCKET)
4346 			|| !vport->stat_data_enabled)
4347 			return strlen(buf);
4348 		spin_lock_irq(shost->host_lock);
4349 		vport->stat_data_blocked = 1;
4350 		lpfc_vport_reset_stat_data(vport);
4351 		vport->stat_data_blocked = 0;
4352 		spin_unlock_irq(shost->host_lock);
4353 		return strlen(buf);
4354 	}
4355 	return -EINVAL;
4356 }
4357 
4358 
4359 /**
4360  * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file
4361  * @dev: Pointer to class device object.
4362  * @buf: Data buffer.
4363  *
4364  * This function is the read call back function for
4365  * lpfc_stat_data_ctrl sysfs file. This function report the
4366  * current statistical data collection state.
4367  **/
4368 static ssize_t
4369 lpfc_stat_data_ctrl_show(struct device *dev, struct device_attribute *attr,
4370 			 char *buf)
4371 {
4372 	struct Scsi_Host  *shost = class_to_shost(dev);
4373 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4374 	struct lpfc_hba   *phba = vport->phba;
4375 	int index = 0;
4376 	int i;
4377 	char *bucket_type;
4378 	unsigned long bucket_value;
4379 
4380 	switch (phba->bucket_type) {
4381 	case LPFC_LINEAR_BUCKET:
4382 		bucket_type = "linear";
4383 		break;
4384 	case LPFC_POWER2_BUCKET:
4385 		bucket_type = "power2";
4386 		break;
4387 	default:
4388 		bucket_type = "No Bucket";
4389 		break;
4390 	}
4391 
4392 	sprintf(&buf[index], "Statistical Data enabled :%d, "
4393 		"blocked :%d, Bucket type :%s, Bucket base :%d,"
4394 		" Bucket step :%d\nLatency Ranges :",
4395 		vport->stat_data_enabled, vport->stat_data_blocked,
4396 		bucket_type, phba->bucket_base, phba->bucket_step);
4397 	index = strlen(buf);
4398 	if (phba->bucket_type != LPFC_NO_BUCKET) {
4399 		for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
4400 			if (phba->bucket_type == LPFC_LINEAR_BUCKET)
4401 				bucket_value = phba->bucket_base +
4402 					phba->bucket_step * i;
4403 			else
4404 				bucket_value = phba->bucket_base +
4405 				(1 << i) * phba->bucket_step;
4406 
4407 			if (index + 10 > PAGE_SIZE)
4408 				break;
4409 			sprintf(&buf[index], "%08ld ", bucket_value);
4410 			index = strlen(buf);
4411 		}
4412 	}
4413 	sprintf(&buf[index], "\n");
4414 	return strlen(buf);
4415 }
4416 
4417 /*
4418  * Sysfs attribute to control the statistical data collection.
4419  */
4420 static DEVICE_ATTR_RW(lpfc_stat_data_ctrl);
4421 
4422 /*
4423  * lpfc_drvr_stat_data: sysfs attr to get driver statistical data.
4424  */
4425 
4426 /*
4427  * Each Bucket takes 11 characters and 1 new line + 17 bytes WWN
4428  * for each target.
4429  */
4430 #define STAT_DATA_SIZE_PER_TARGET(NUM_BUCKETS) ((NUM_BUCKETS) * 11 + 18)
4431 #define MAX_STAT_DATA_SIZE_PER_TARGET \
4432 	STAT_DATA_SIZE_PER_TARGET(LPFC_MAX_BUCKET_COUNT)
4433 
4434 
4435 /**
4436  * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
4437  * @filp: sysfs file
4438  * @kobj: Pointer to the kernel object
4439  * @bin_attr: Attribute object
4440  * @buff: Buffer pointer
4441  * @off: File offset
4442  * @count: Buffer size
4443  *
4444  * This function is the read call back function for lpfc_drvr_stat_data
4445  * sysfs file. This function export the statistical data to user
4446  * applications.
4447  **/
4448 static ssize_t
4449 sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
4450 		struct bin_attribute *bin_attr,
4451 		char *buf, loff_t off, size_t count)
4452 {
4453 	struct device *dev = container_of(kobj, struct device,
4454 		kobj);
4455 	struct Scsi_Host  *shost = class_to_shost(dev);
4456 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4457 	struct lpfc_hba   *phba = vport->phba;
4458 	int i = 0, index = 0;
4459 	unsigned long nport_index;
4460 	struct lpfc_nodelist *ndlp = NULL;
4461 	nport_index = (unsigned long)off /
4462 		MAX_STAT_DATA_SIZE_PER_TARGET;
4463 
4464 	if (!vport->stat_data_enabled || vport->stat_data_blocked
4465 		|| (phba->bucket_type == LPFC_NO_BUCKET))
4466 		return 0;
4467 
4468 	spin_lock_irq(shost->host_lock);
4469 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4470 		if (!NLP_CHK_NODE_ACT(ndlp) || !ndlp->lat_data)
4471 			continue;
4472 
4473 		if (nport_index > 0) {
4474 			nport_index--;
4475 			continue;
4476 		}
4477 
4478 		if ((index + MAX_STAT_DATA_SIZE_PER_TARGET)
4479 			> count)
4480 			break;
4481 
4482 		if (!ndlp->lat_data)
4483 			continue;
4484 
4485 		/* Print the WWN */
4486 		sprintf(&buf[index], "%02x%02x%02x%02x%02x%02x%02x%02x:",
4487 			ndlp->nlp_portname.u.wwn[0],
4488 			ndlp->nlp_portname.u.wwn[1],
4489 			ndlp->nlp_portname.u.wwn[2],
4490 			ndlp->nlp_portname.u.wwn[3],
4491 			ndlp->nlp_portname.u.wwn[4],
4492 			ndlp->nlp_portname.u.wwn[5],
4493 			ndlp->nlp_portname.u.wwn[6],
4494 			ndlp->nlp_portname.u.wwn[7]);
4495 
4496 		index = strlen(buf);
4497 
4498 		for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
4499 			sprintf(&buf[index], "%010u,",
4500 				ndlp->lat_data[i].cmd_count);
4501 			index = strlen(buf);
4502 		}
4503 		sprintf(&buf[index], "\n");
4504 		index = strlen(buf);
4505 	}
4506 	spin_unlock_irq(shost->host_lock);
4507 	return index;
4508 }
4509 
4510 static struct bin_attribute sysfs_drvr_stat_data_attr = {
4511 	.attr = {
4512 		.name = "lpfc_drvr_stat_data",
4513 		.mode = S_IRUSR,
4514 	},
4515 	.size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET,
4516 	.read = sysfs_drvr_stat_data_read,
4517 	.write = NULL,
4518 };
4519 
4520 /*
4521 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
4522 # connection.
4523 # Value range is [0,16]. Default value is 0.
4524 */
4525 /**
4526  * lpfc_link_speed_set - Set the adapters link speed
4527  * @phba: lpfc_hba pointer.
4528  * @val: link speed value.
4529  *
4530  * Description:
4531  * If val is in a valid range then set the adapter's link speed field and
4532  * issue a lip; if the lip fails reset the link speed to the old value.
4533  *
4534  * Notes:
4535  * If the value is not in range log a kernel error message and return an error.
4536  *
4537  * Returns:
4538  * zero if val is in range and lip okay.
4539  * non-zero return value from lpfc_issue_lip()
4540  * -EINVAL val out of range
4541  **/
4542 static ssize_t
4543 lpfc_link_speed_store(struct device *dev, struct device_attribute *attr,
4544 		const char *buf, size_t count)
4545 {
4546 	struct Scsi_Host  *shost = class_to_shost(dev);
4547 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4548 	struct lpfc_hba   *phba = vport->phba;
4549 	int val = LPFC_USER_LINK_SPEED_AUTO;
4550 	int nolip = 0;
4551 	const char *val_buf = buf;
4552 	int err;
4553 	uint32_t prev_val, if_type;
4554 
4555 	if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
4556 	if (if_type >= LPFC_SLI_INTF_IF_TYPE_2 &&
4557 	    phba->hba_flag & HBA_FORCED_LINK_SPEED)
4558 		return -EPERM;
4559 
4560 	if (!strncmp(buf, "nolip ", strlen("nolip "))) {
4561 		nolip = 1;
4562 		val_buf = &buf[strlen("nolip ")];
4563 	}
4564 
4565 	if (!isdigit(val_buf[0]))
4566 		return -EINVAL;
4567 	if (sscanf(val_buf, "%i", &val) != 1)
4568 		return -EINVAL;
4569 
4570 	lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4571 		"3055 lpfc_link_speed changed from %d to %d %s\n",
4572 		phba->cfg_link_speed, val, nolip ? "(nolip)" : "(lip)");
4573 
4574 	if (((val == LPFC_USER_LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) ||
4575 	    ((val == LPFC_USER_LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) ||
4576 	    ((val == LPFC_USER_LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) ||
4577 	    ((val == LPFC_USER_LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) ||
4578 	    ((val == LPFC_USER_LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)) ||
4579 	    ((val == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb)) ||
4580 	    ((val == LPFC_USER_LINK_SPEED_32G) && !(phba->lmt & LMT_32Gb)) ||
4581 	    ((val == LPFC_USER_LINK_SPEED_64G) && !(phba->lmt & LMT_64Gb))) {
4582 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4583 				"2879 lpfc_link_speed attribute cannot be set "
4584 				"to %d. Speed is not supported by this port.\n",
4585 				val);
4586 		return -EINVAL;
4587 	}
4588 	if (val >= LPFC_USER_LINK_SPEED_16G &&
4589 	    phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4590 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4591 				"3112 lpfc_link_speed attribute cannot be set "
4592 				"to %d. Speed is not supported in loop mode.\n",
4593 				val);
4594 		return -EINVAL;
4595 	}
4596 
4597 	switch (val) {
4598 	case LPFC_USER_LINK_SPEED_AUTO:
4599 	case LPFC_USER_LINK_SPEED_1G:
4600 	case LPFC_USER_LINK_SPEED_2G:
4601 	case LPFC_USER_LINK_SPEED_4G:
4602 	case LPFC_USER_LINK_SPEED_8G:
4603 	case LPFC_USER_LINK_SPEED_16G:
4604 	case LPFC_USER_LINK_SPEED_32G:
4605 	case LPFC_USER_LINK_SPEED_64G:
4606 		prev_val = phba->cfg_link_speed;
4607 		phba->cfg_link_speed = val;
4608 		if (nolip)
4609 			return strlen(buf);
4610 
4611 		err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
4612 		if (err) {
4613 			phba->cfg_link_speed = prev_val;
4614 			return -EINVAL;
4615 		}
4616 		return strlen(buf);
4617 	default:
4618 		break;
4619 	}
4620 
4621 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4622 			"0469 lpfc_link_speed attribute cannot be set to %d, "
4623 			"allowed values are [%s]\n",
4624 			val, LPFC_LINK_SPEED_STRING);
4625 	return -EINVAL;
4626 
4627 }
4628 
4629 static int lpfc_link_speed = 0;
4630 module_param(lpfc_link_speed, int, S_IRUGO);
4631 MODULE_PARM_DESC(lpfc_link_speed, "Select link speed");
4632 lpfc_param_show(link_speed)
4633 
4634 /**
4635  * lpfc_link_speed_init - Set the adapters link speed
4636  * @phba: lpfc_hba pointer.
4637  * @val: link speed value.
4638  *
4639  * Description:
4640  * If val is in a valid range then set the adapter's link speed field.
4641  *
4642  * Notes:
4643  * If the value is not in range log a kernel error message, clear the link
4644  * speed and return an error.
4645  *
4646  * Returns:
4647  * zero if val saved.
4648  * -EINVAL val out of range
4649  **/
4650 static int
4651 lpfc_link_speed_init(struct lpfc_hba *phba, int val)
4652 {
4653 	if (val >= LPFC_USER_LINK_SPEED_16G && phba->cfg_topology == 4) {
4654 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4655 			"3111 lpfc_link_speed of %d cannot "
4656 			"support loop mode, setting topology to default.\n",
4657 			 val);
4658 		phba->cfg_topology = 0;
4659 	}
4660 
4661 	switch (val) {
4662 	case LPFC_USER_LINK_SPEED_AUTO:
4663 	case LPFC_USER_LINK_SPEED_1G:
4664 	case LPFC_USER_LINK_SPEED_2G:
4665 	case LPFC_USER_LINK_SPEED_4G:
4666 	case LPFC_USER_LINK_SPEED_8G:
4667 	case LPFC_USER_LINK_SPEED_16G:
4668 	case LPFC_USER_LINK_SPEED_32G:
4669 	case LPFC_USER_LINK_SPEED_64G:
4670 		phba->cfg_link_speed = val;
4671 		return 0;
4672 	default:
4673 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4674 				"0405 lpfc_link_speed attribute cannot "
4675 				"be set to %d, allowed values are "
4676 				"["LPFC_LINK_SPEED_STRING"]\n", val);
4677 		phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
4678 		return -EINVAL;
4679 	}
4680 }
4681 
4682 static DEVICE_ATTR_RW(lpfc_link_speed);
4683 
4684 /*
4685 # lpfc_aer_support: Support PCIe device Advanced Error Reporting (AER)
4686 #       0  = aer disabled or not supported
4687 #       1  = aer supported and enabled (default)
4688 # Value range is [0,1]. Default value is 1.
4689 */
4690 LPFC_ATTR(aer_support, 1, 0, 1,
4691 	"Enable PCIe device AER support");
4692 lpfc_param_show(aer_support)
4693 
4694 /**
4695  * lpfc_aer_support_store - Set the adapter for aer support
4696  *
4697  * @dev: class device that is converted into a Scsi_host.
4698  * @attr: device attribute, not used.
4699  * @buf: containing enable or disable aer flag.
4700  * @count: unused variable.
4701  *
4702  * Description:
4703  * If the val is 1 and currently the device's AER capability was not
4704  * enabled, invoke the kernel's enable AER helper routine, trying to
4705  * enable the device's AER capability. If the helper routine enabling
4706  * AER returns success, update the device's cfg_aer_support flag to
4707  * indicate AER is supported by the device; otherwise, if the device
4708  * AER capability is already enabled to support AER, then do nothing.
4709  *
4710  * If the val is 0 and currently the device's AER support was enabled,
4711  * invoke the kernel's disable AER helper routine. After that, update
4712  * the device's cfg_aer_support flag to indicate AER is not supported
4713  * by the device; otherwise, if the device AER capability is already
4714  * disabled from supporting AER, then do nothing.
4715  *
4716  * Returns:
4717  * length of the buf on success if val is in range the intended mode
4718  * is supported.
4719  * -EINVAL if val out of range or intended mode is not supported.
4720  **/
4721 static ssize_t
4722 lpfc_aer_support_store(struct device *dev, struct device_attribute *attr,
4723 		       const char *buf, size_t count)
4724 {
4725 	struct Scsi_Host *shost = class_to_shost(dev);
4726 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4727 	struct lpfc_hba *phba = vport->phba;
4728 	int val = 0, rc = -EINVAL;
4729 
4730 	if (!isdigit(buf[0]))
4731 		return -EINVAL;
4732 	if (sscanf(buf, "%i", &val) != 1)
4733 		return -EINVAL;
4734 
4735 	switch (val) {
4736 	case 0:
4737 		if (phba->hba_flag & HBA_AER_ENABLED) {
4738 			rc = pci_disable_pcie_error_reporting(phba->pcidev);
4739 			if (!rc) {
4740 				spin_lock_irq(&phba->hbalock);
4741 				phba->hba_flag &= ~HBA_AER_ENABLED;
4742 				spin_unlock_irq(&phba->hbalock);
4743 				phba->cfg_aer_support = 0;
4744 				rc = strlen(buf);
4745 			} else
4746 				rc = -EPERM;
4747 		} else {
4748 			phba->cfg_aer_support = 0;
4749 			rc = strlen(buf);
4750 		}
4751 		break;
4752 	case 1:
4753 		if (!(phba->hba_flag & HBA_AER_ENABLED)) {
4754 			rc = pci_enable_pcie_error_reporting(phba->pcidev);
4755 			if (!rc) {
4756 				spin_lock_irq(&phba->hbalock);
4757 				phba->hba_flag |= HBA_AER_ENABLED;
4758 				spin_unlock_irq(&phba->hbalock);
4759 				phba->cfg_aer_support = 1;
4760 				rc = strlen(buf);
4761 			} else
4762 				 rc = -EPERM;
4763 		} else {
4764 			phba->cfg_aer_support = 1;
4765 			rc = strlen(buf);
4766 		}
4767 		break;
4768 	default:
4769 		rc = -EINVAL;
4770 		break;
4771 	}
4772 	return rc;
4773 }
4774 
4775 static DEVICE_ATTR_RW(lpfc_aer_support);
4776 
4777 /**
4778  * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled device
4779  * @dev: class device that is converted into a Scsi_host.
4780  * @attr: device attribute, not used.
4781  * @buf: containing flag 1 for aer cleanup state.
4782  * @count: unused variable.
4783  *
4784  * Description:
4785  * If the @buf contains 1 and the device currently has the AER support
4786  * enabled, then invokes the kernel AER helper routine
4787  * pci_cleanup_aer_uncorrect_error_status to clean up the uncorrectable
4788  * error status register.
4789  *
4790  * Notes:
4791  *
4792  * Returns:
4793  * -EINVAL if the buf does not contain the 1 or the device is not currently
4794  * enabled with the AER support.
4795  **/
4796 static ssize_t
4797 lpfc_aer_cleanup_state(struct device *dev, struct device_attribute *attr,
4798 		       const char *buf, size_t count)
4799 {
4800 	struct Scsi_Host  *shost = class_to_shost(dev);
4801 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4802 	struct lpfc_hba   *phba = vport->phba;
4803 	int val, rc = -1;
4804 
4805 	if (!isdigit(buf[0]))
4806 		return -EINVAL;
4807 	if (sscanf(buf, "%i", &val) != 1)
4808 		return -EINVAL;
4809 	if (val != 1)
4810 		return -EINVAL;
4811 
4812 	if (phba->hba_flag & HBA_AER_ENABLED)
4813 		rc = pci_cleanup_aer_uncorrect_error_status(phba->pcidev);
4814 
4815 	if (rc == 0)
4816 		return strlen(buf);
4817 	else
4818 		return -EPERM;
4819 }
4820 
4821 static DEVICE_ATTR(lpfc_aer_state_cleanup, S_IWUSR, NULL,
4822 		   lpfc_aer_cleanup_state);
4823 
4824 /**
4825  * lpfc_sriov_nr_virtfn_store - Enable the adapter for sr-iov virtual functions
4826  *
4827  * @dev: class device that is converted into a Scsi_host.
4828  * @attr: device attribute, not used.
4829  * @buf: containing the string the number of vfs to be enabled.
4830  * @count: unused variable.
4831  *
4832  * Description:
4833  * When this api is called either through user sysfs, the driver shall
4834  * try to enable or disable SR-IOV virtual functions according to the
4835  * following:
4836  *
4837  * If zero virtual function has been enabled to the physical function,
4838  * the driver shall invoke the pci enable virtual function api trying
4839  * to enable the virtual functions. If the nr_vfn provided is greater
4840  * than the maximum supported, the maximum virtual function number will
4841  * be used for invoking the api; otherwise, the nr_vfn provided shall
4842  * be used for invoking the api. If the api call returned success, the
4843  * actual number of virtual functions enabled will be set to the driver
4844  * cfg_sriov_nr_virtfn; otherwise, -EINVAL shall be returned and driver
4845  * cfg_sriov_nr_virtfn remains zero.
4846  *
4847  * If none-zero virtual functions have already been enabled to the
4848  * physical function, as reflected by the driver's cfg_sriov_nr_virtfn,
4849  * -EINVAL will be returned and the driver does nothing;
4850  *
4851  * If the nr_vfn provided is zero and none-zero virtual functions have
4852  * been enabled, as indicated by the driver's cfg_sriov_nr_virtfn, the
4853  * disabling virtual function api shall be invoded to disable all the
4854  * virtual functions and driver's cfg_sriov_nr_virtfn shall be set to
4855  * zero. Otherwise, if zero virtual function has been enabled, do
4856  * nothing.
4857  *
4858  * Returns:
4859  * length of the buf on success if val is in range the intended mode
4860  * is supported.
4861  * -EINVAL if val out of range or intended mode is not supported.
4862  **/
4863 static ssize_t
4864 lpfc_sriov_nr_virtfn_store(struct device *dev, struct device_attribute *attr,
4865 			 const char *buf, size_t count)
4866 {
4867 	struct Scsi_Host *shost = class_to_shost(dev);
4868 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4869 	struct lpfc_hba *phba = vport->phba;
4870 	struct pci_dev *pdev = phba->pcidev;
4871 	int val = 0, rc = -EINVAL;
4872 
4873 	/* Sanity check on user data */
4874 	if (!isdigit(buf[0]))
4875 		return -EINVAL;
4876 	if (sscanf(buf, "%i", &val) != 1)
4877 		return -EINVAL;
4878 	if (val < 0)
4879 		return -EINVAL;
4880 
4881 	/* Request disabling virtual functions */
4882 	if (val == 0) {
4883 		if (phba->cfg_sriov_nr_virtfn > 0) {
4884 			pci_disable_sriov(pdev);
4885 			phba->cfg_sriov_nr_virtfn = 0;
4886 		}
4887 		return strlen(buf);
4888 	}
4889 
4890 	/* Request enabling virtual functions */
4891 	if (phba->cfg_sriov_nr_virtfn > 0) {
4892 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4893 				"3018 There are %d virtual functions "
4894 				"enabled on physical function.\n",
4895 				phba->cfg_sriov_nr_virtfn);
4896 		return -EEXIST;
4897 	}
4898 
4899 	if (val <= LPFC_MAX_VFN_PER_PFN)
4900 		phba->cfg_sriov_nr_virtfn = val;
4901 	else {
4902 		lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4903 				"3019 Enabling %d virtual functions is not "
4904 				"allowed.\n", val);
4905 		return -EINVAL;
4906 	}
4907 
4908 	rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn);
4909 	if (rc) {
4910 		phba->cfg_sriov_nr_virtfn = 0;
4911 		rc = -EPERM;
4912 	} else
4913 		rc = strlen(buf);
4914 
4915 	return rc;
4916 }
4917 
4918 LPFC_ATTR(sriov_nr_virtfn, LPFC_DEF_VFN_PER_PFN, 0, LPFC_MAX_VFN_PER_PFN,
4919 	"Enable PCIe device SR-IOV virtual fn");
4920 
4921 lpfc_param_show(sriov_nr_virtfn)
4922 static DEVICE_ATTR_RW(lpfc_sriov_nr_virtfn);
4923 
4924 /**
4925  * lpfc_request_firmware_store - Request for Linux generic firmware upgrade
4926  *
4927  * @dev: class device that is converted into a Scsi_host.
4928  * @attr: device attribute, not used.
4929  * @buf: containing the string the number of vfs to be enabled.
4930  * @count: unused variable.
4931  *
4932  * Description:
4933  *
4934  * Returns:
4935  * length of the buf on success if val is in range the intended mode
4936  * is supported.
4937  * -EINVAL if val out of range or intended mode is not supported.
4938  **/
4939 static ssize_t
4940 lpfc_request_firmware_upgrade_store(struct device *dev,
4941 				    struct device_attribute *attr,
4942 				    const char *buf, size_t count)
4943 {
4944 	struct Scsi_Host *shost = class_to_shost(dev);
4945 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4946 	struct lpfc_hba *phba = vport->phba;
4947 	int val = 0, rc = -EINVAL;
4948 
4949 	/* Sanity check on user data */
4950 	if (!isdigit(buf[0]))
4951 		return -EINVAL;
4952 	if (sscanf(buf, "%i", &val) != 1)
4953 		return -EINVAL;
4954 	if (val != 1)
4955 		return -EINVAL;
4956 
4957 	rc = lpfc_sli4_request_firmware_update(phba, RUN_FW_UPGRADE);
4958 	if (rc)
4959 		rc = -EPERM;
4960 	else
4961 		rc = strlen(buf);
4962 	return rc;
4963 }
4964 
4965 static int lpfc_req_fw_upgrade;
4966 module_param(lpfc_req_fw_upgrade, int, S_IRUGO|S_IWUSR);
4967 MODULE_PARM_DESC(lpfc_req_fw_upgrade, "Enable Linux generic firmware upgrade");
4968 lpfc_param_show(request_firmware_upgrade)
4969 
4970 /**
4971  * lpfc_request_firmware_upgrade_init - Enable initial linux generic fw upgrade
4972  * @phba: lpfc_hba pointer.
4973  * @val: 0 or 1.
4974  *
4975  * Description:
4976  * Set the initial Linux generic firmware upgrade enable or disable flag.
4977  *
4978  * Returns:
4979  * zero if val saved.
4980  * -EINVAL val out of range
4981  **/
4982 static int
4983 lpfc_request_firmware_upgrade_init(struct lpfc_hba *phba, int val)
4984 {
4985 	if (val >= 0 && val <= 1) {
4986 		phba->cfg_request_firmware_upgrade = val;
4987 		return 0;
4988 	}
4989 	return -EINVAL;
4990 }
4991 static DEVICE_ATTR(lpfc_req_fw_upgrade, S_IRUGO | S_IWUSR,
4992 		   lpfc_request_firmware_upgrade_show,
4993 		   lpfc_request_firmware_upgrade_store);
4994 
4995 /**
4996  * lpfc_force_rscn_store
4997  *
4998  * @dev: class device that is converted into a Scsi_host.
4999  * @attr: device attribute, not used.
5000  * @buf: unused string
5001  * @count: unused variable.
5002  *
5003  * Description:
5004  * Force the switch to send a RSCN to all other NPorts in our zone
5005  * If we are direct connect pt2pt, build the RSCN command ourself
5006  * and send to the other NPort. Not supported for private loop.
5007  *
5008  * Returns:
5009  * 0      - on success
5010  * -EIO   - if command is not sent
5011  **/
5012 static ssize_t
5013 lpfc_force_rscn_store(struct device *dev, struct device_attribute *attr,
5014 		      const char *buf, size_t count)
5015 {
5016 	struct Scsi_Host *shost = class_to_shost(dev);
5017 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5018 	int i;
5019 
5020 	i = lpfc_issue_els_rscn(vport, 0);
5021 	if (i)
5022 		return -EIO;
5023 	return strlen(buf);
5024 }
5025 
5026 /*
5027  * lpfc_force_rscn: Force an RSCN to be sent to all remote NPorts
5028  * connected to  the HBA.
5029  *
5030  * Value range is any ascii value
5031  */
5032 static int lpfc_force_rscn;
5033 module_param(lpfc_force_rscn, int, 0644);
5034 MODULE_PARM_DESC(lpfc_force_rscn,
5035 		 "Force an RSCN to be sent to all remote NPorts");
5036 lpfc_param_show(force_rscn)
5037 
5038 /**
5039  * lpfc_force_rscn_init - Force an RSCN to be sent to all remote NPorts
5040  * @phba: lpfc_hba pointer.
5041  * @val: unused value.
5042  *
5043  * Returns:
5044  * zero if val saved.
5045  **/
5046 static int
5047 lpfc_force_rscn_init(struct lpfc_hba *phba, int val)
5048 {
5049 	return 0;
5050 }
5051 static DEVICE_ATTR_RW(lpfc_force_rscn);
5052 
5053 /**
5054  * lpfc_fcp_imax_store
5055  *
5056  * @dev: class device that is converted into a Scsi_host.
5057  * @attr: device attribute, not used.
5058  * @buf: string with the number of fast-path FCP interrupts per second.
5059  * @count: unused variable.
5060  *
5061  * Description:
5062  * If val is in a valid range [636,651042], then set the adapter's
5063  * maximum number of fast-path FCP interrupts per second.
5064  *
5065  * Returns:
5066  * length of the buf on success if val is in range the intended mode
5067  * is supported.
5068  * -EINVAL if val out of range or intended mode is not supported.
5069  **/
5070 static ssize_t
5071 lpfc_fcp_imax_store(struct device *dev, struct device_attribute *attr,
5072 			 const char *buf, size_t count)
5073 {
5074 	struct Scsi_Host *shost = class_to_shost(dev);
5075 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5076 	struct lpfc_hba *phba = vport->phba;
5077 	struct lpfc_eq_intr_info *eqi;
5078 	uint32_t usdelay;
5079 	int val = 0, i;
5080 
5081 	/* fcp_imax is only valid for SLI4 */
5082 	if (phba->sli_rev != LPFC_SLI_REV4)
5083 		return -EINVAL;
5084 
5085 	/* Sanity check on user data */
5086 	if (!isdigit(buf[0]))
5087 		return -EINVAL;
5088 	if (sscanf(buf, "%i", &val) != 1)
5089 		return -EINVAL;
5090 
5091 	/*
5092 	 * Value range for the HBA is [5000,5000000]
5093 	 * The value for each EQ depends on how many EQs are configured.
5094 	 * Allow value == 0
5095 	 */
5096 	if (val && (val < LPFC_MIN_IMAX || val > LPFC_MAX_IMAX))
5097 		return -EINVAL;
5098 
5099 	phba->cfg_auto_imax = (val) ? 0 : 1;
5100 	if (phba->cfg_fcp_imax && !val) {
5101 		queue_delayed_work(phba->wq, &phba->eq_delay_work,
5102 				   msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
5103 
5104 		for_each_present_cpu(i) {
5105 			eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
5106 			eqi->icnt = 0;
5107 		}
5108 	}
5109 
5110 	phba->cfg_fcp_imax = (uint32_t)val;
5111 
5112 	if (phba->cfg_fcp_imax)
5113 		usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
5114 	else
5115 		usdelay = 0;
5116 
5117 	for (i = 0; i < phba->cfg_irq_chann; i += LPFC_MAX_EQ_DELAY_EQID_CNT)
5118 		lpfc_modify_hba_eq_delay(phba, i, LPFC_MAX_EQ_DELAY_EQID_CNT,
5119 					 usdelay);
5120 
5121 	return strlen(buf);
5122 }
5123 
5124 /*
5125 # lpfc_fcp_imax: The maximum number of fast-path FCP interrupts per second
5126 # for the HBA.
5127 #
5128 # Value range is [5,000 to 5,000,000]. Default value is 50,000.
5129 */
5130 static int lpfc_fcp_imax = LPFC_DEF_IMAX;
5131 module_param(lpfc_fcp_imax, int, S_IRUGO|S_IWUSR);
5132 MODULE_PARM_DESC(lpfc_fcp_imax,
5133 	    "Set the maximum number of FCP interrupts per second per HBA");
5134 lpfc_param_show(fcp_imax)
5135 
5136 /**
5137  * lpfc_fcp_imax_init - Set the initial sr-iov virtual function enable
5138  * @phba: lpfc_hba pointer.
5139  * @val: link speed value.
5140  *
5141  * Description:
5142  * If val is in a valid range [636,651042], then initialize the adapter's
5143  * maximum number of fast-path FCP interrupts per second.
5144  *
5145  * Returns:
5146  * zero if val saved.
5147  * -EINVAL val out of range
5148  **/
5149 static int
5150 lpfc_fcp_imax_init(struct lpfc_hba *phba, int val)
5151 {
5152 	if (phba->sli_rev != LPFC_SLI_REV4) {
5153 		phba->cfg_fcp_imax = 0;
5154 		return 0;
5155 	}
5156 
5157 	if ((val >= LPFC_MIN_IMAX && val <= LPFC_MAX_IMAX) ||
5158 	    (val == 0)) {
5159 		phba->cfg_fcp_imax = val;
5160 		return 0;
5161 	}
5162 
5163 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5164 			"3016 lpfc_fcp_imax: %d out of range, using default\n",
5165 			val);
5166 	phba->cfg_fcp_imax = LPFC_DEF_IMAX;
5167 
5168 	return 0;
5169 }
5170 
5171 static DEVICE_ATTR_RW(lpfc_fcp_imax);
5172 
5173 /**
5174  * lpfc_cq_max_proc_limit_store
5175  *
5176  * @dev: class device that is converted into a Scsi_host.
5177  * @attr: device attribute, not used.
5178  * @buf: string with the cq max processing limit of cqes
5179  * @count: unused variable.
5180  *
5181  * Description:
5182  * If val is in a valid range, then set value on each cq
5183  *
5184  * Returns:
5185  * The length of the buf: if successful
5186  * -ERANGE: if val is not in the valid range
5187  * -EINVAL: if bad value format or intended mode is not supported.
5188  **/
5189 static ssize_t
5190 lpfc_cq_max_proc_limit_store(struct device *dev, struct device_attribute *attr,
5191 			 const char *buf, size_t count)
5192 {
5193 	struct Scsi_Host *shost = class_to_shost(dev);
5194 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5195 	struct lpfc_hba *phba = vport->phba;
5196 	struct lpfc_queue *eq, *cq;
5197 	unsigned long val;
5198 	int i;
5199 
5200 	/* cq_max_proc_limit is only valid for SLI4 */
5201 	if (phba->sli_rev != LPFC_SLI_REV4)
5202 		return -EINVAL;
5203 
5204 	/* Sanity check on user data */
5205 	if (!isdigit(buf[0]))
5206 		return -EINVAL;
5207 	if (kstrtoul(buf, 0, &val))
5208 		return -EINVAL;
5209 
5210 	if (val < LPFC_CQ_MIN_PROC_LIMIT || val > LPFC_CQ_MAX_PROC_LIMIT)
5211 		return -ERANGE;
5212 
5213 	phba->cfg_cq_max_proc_limit = (uint32_t)val;
5214 
5215 	/* set the values on the cq's */
5216 	for (i = 0; i < phba->cfg_irq_chann; i++) {
5217 		/* Get the EQ corresponding to the IRQ vector */
5218 		eq = phba->sli4_hba.hba_eq_hdl[i].eq;
5219 		if (!eq)
5220 			continue;
5221 
5222 		list_for_each_entry(cq, &eq->child_list, list)
5223 			cq->max_proc_limit = min(phba->cfg_cq_max_proc_limit,
5224 						 cq->entry_count);
5225 	}
5226 
5227 	return strlen(buf);
5228 }
5229 
5230 /*
5231  * lpfc_cq_max_proc_limit: The maximum number CQE entries processed in an
5232  *   itteration of CQ processing.
5233  */
5234 static int lpfc_cq_max_proc_limit = LPFC_CQ_DEF_MAX_PROC_LIMIT;
5235 module_param(lpfc_cq_max_proc_limit, int, 0644);
5236 MODULE_PARM_DESC(lpfc_cq_max_proc_limit,
5237 	    "Set the maximum number CQEs processed in an iteration of "
5238 	    "CQ processing");
5239 lpfc_param_show(cq_max_proc_limit)
5240 
5241 /*
5242  * lpfc_cq_poll_threshold: Set the threshold of CQE completions in a
5243  *   single handler call which should request a polled completion rather
5244  *   than re-enabling interrupts.
5245  */
5246 LPFC_ATTR_RW(cq_poll_threshold, LPFC_CQ_DEF_THRESHOLD_TO_POLL,
5247 	     LPFC_CQ_MIN_THRESHOLD_TO_POLL,
5248 	     LPFC_CQ_MAX_THRESHOLD_TO_POLL,
5249 	     "CQE Processing Threshold to enable Polling");
5250 
5251 /**
5252  * lpfc_cq_max_proc_limit_init - Set the initial cq max_proc_limit
5253  * @phba: lpfc_hba pointer.
5254  * @val: entry limit
5255  *
5256  * Description:
5257  * If val is in a valid range, then initialize the adapter's maximum
5258  * value.
5259  *
5260  * Returns:
5261  *  Always returns 0 for success, even if value not always set to
5262  *  requested value. If value out of range or not supported, will fall
5263  *  back to default.
5264  **/
5265 static int
5266 lpfc_cq_max_proc_limit_init(struct lpfc_hba *phba, int val)
5267 {
5268 	phba->cfg_cq_max_proc_limit = LPFC_CQ_DEF_MAX_PROC_LIMIT;
5269 
5270 	if (phba->sli_rev != LPFC_SLI_REV4)
5271 		return 0;
5272 
5273 	if (val >= LPFC_CQ_MIN_PROC_LIMIT && val <= LPFC_CQ_MAX_PROC_LIMIT) {
5274 		phba->cfg_cq_max_proc_limit = val;
5275 		return 0;
5276 	}
5277 
5278 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5279 			"0371 "LPFC_DRIVER_NAME"_cq_max_proc_limit: "
5280 			"%d out of range, using default\n",
5281 			phba->cfg_cq_max_proc_limit);
5282 
5283 	return 0;
5284 }
5285 
5286 static DEVICE_ATTR_RW(lpfc_cq_max_proc_limit);
5287 
5288 /**
5289  * lpfc_state_show - Display current driver CPU affinity
5290  * @dev: class converted to a Scsi_host structure.
5291  * @attr: device attribute, not used.
5292  * @buf: on return contains text describing the state of the link.
5293  *
5294  * Returns: size of formatted string.
5295  **/
5296 static ssize_t
5297 lpfc_fcp_cpu_map_show(struct device *dev, struct device_attribute *attr,
5298 		      char *buf)
5299 {
5300 	struct Scsi_Host  *shost = class_to_shost(dev);
5301 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5302 	struct lpfc_hba   *phba = vport->phba;
5303 	struct lpfc_vector_map_info *cpup;
5304 	int  len = 0;
5305 
5306 	if ((phba->sli_rev != LPFC_SLI_REV4) ||
5307 	    (phba->intr_type != MSIX))
5308 		return len;
5309 
5310 	switch (phba->cfg_fcp_cpu_map) {
5311 	case 0:
5312 		len += scnprintf(buf + len, PAGE_SIZE-len,
5313 				"fcp_cpu_map: No mapping (%d)\n",
5314 				phba->cfg_fcp_cpu_map);
5315 		return len;
5316 	case 1:
5317 		len += scnprintf(buf + len, PAGE_SIZE-len,
5318 				"fcp_cpu_map: HBA centric mapping (%d): "
5319 				"%d of %d CPUs online from %d possible CPUs\n",
5320 				phba->cfg_fcp_cpu_map, num_online_cpus(),
5321 				num_present_cpus(),
5322 				phba->sli4_hba.num_possible_cpu);
5323 		break;
5324 	}
5325 
5326 	while (phba->sli4_hba.curr_disp_cpu <
5327 	       phba->sli4_hba.num_possible_cpu) {
5328 		cpup = &phba->sli4_hba.cpu_map[phba->sli4_hba.curr_disp_cpu];
5329 
5330 		if (!cpu_present(phba->sli4_hba.curr_disp_cpu))
5331 			len += scnprintf(buf + len, PAGE_SIZE - len,
5332 					"CPU %02d not present\n",
5333 					phba->sli4_hba.curr_disp_cpu);
5334 		else if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
5335 			if (cpup->hdwq == LPFC_VECTOR_MAP_EMPTY)
5336 				len += scnprintf(
5337 					buf + len, PAGE_SIZE - len,
5338 					"CPU %02d hdwq None "
5339 					"physid %d coreid %d ht %d ua %d\n",
5340 					phba->sli4_hba.curr_disp_cpu,
5341 					cpup->phys_id, cpup->core_id,
5342 					(cpup->flag & LPFC_CPU_MAP_HYPER),
5343 					(cpup->flag & LPFC_CPU_MAP_UNASSIGN));
5344 			else
5345 				len += scnprintf(
5346 					buf + len, PAGE_SIZE - len,
5347 					"CPU %02d EQ None hdwq %04d "
5348 					"physid %d coreid %d ht %d ua %d\n",
5349 					phba->sli4_hba.curr_disp_cpu,
5350 					cpup->hdwq, cpup->phys_id,
5351 					cpup->core_id,
5352 					(cpup->flag & LPFC_CPU_MAP_HYPER),
5353 					(cpup->flag & LPFC_CPU_MAP_UNASSIGN));
5354 		} else {
5355 			if (cpup->hdwq == LPFC_VECTOR_MAP_EMPTY)
5356 				len += scnprintf(
5357 					buf + len, PAGE_SIZE - len,
5358 					"CPU %02d hdwq None "
5359 					"physid %d coreid %d ht %d ua %d IRQ %d\n",
5360 					phba->sli4_hba.curr_disp_cpu,
5361 					cpup->phys_id,
5362 					cpup->core_id,
5363 					(cpup->flag & LPFC_CPU_MAP_HYPER),
5364 					(cpup->flag & LPFC_CPU_MAP_UNASSIGN),
5365 					lpfc_get_irq(cpup->eq));
5366 			else
5367 				len += scnprintf(
5368 					buf + len, PAGE_SIZE - len,
5369 					"CPU %02d EQ %04d hdwq %04d "
5370 					"physid %d coreid %d ht %d ua %d IRQ %d\n",
5371 					phba->sli4_hba.curr_disp_cpu,
5372 					cpup->eq, cpup->hdwq, cpup->phys_id,
5373 					cpup->core_id,
5374 					(cpup->flag & LPFC_CPU_MAP_HYPER),
5375 					(cpup->flag & LPFC_CPU_MAP_UNASSIGN),
5376 					lpfc_get_irq(cpup->eq));
5377 		}
5378 
5379 		phba->sli4_hba.curr_disp_cpu++;
5380 
5381 		/* display max number of CPUs keeping some margin */
5382 		if (phba->sli4_hba.curr_disp_cpu <
5383 				phba->sli4_hba.num_possible_cpu &&
5384 				(len >= (PAGE_SIZE - 64))) {
5385 			len += scnprintf(buf + len,
5386 					PAGE_SIZE - len, "more...\n");
5387 			break;
5388 		}
5389 	}
5390 
5391 	if (phba->sli4_hba.curr_disp_cpu == phba->sli4_hba.num_possible_cpu)
5392 		phba->sli4_hba.curr_disp_cpu = 0;
5393 
5394 	return len;
5395 }
5396 
5397 /**
5398  * lpfc_fcp_cpu_map_store - Change CPU affinity of driver vectors
5399  * @dev: class device that is converted into a Scsi_host.
5400  * @attr: device attribute, not used.
5401  * @buf: one or more lpfc_polling_flags values.
5402  * @count: not used.
5403  *
5404  * Returns:
5405  * -EINVAL  - Not implemented yet.
5406  **/
5407 static ssize_t
5408 lpfc_fcp_cpu_map_store(struct device *dev, struct device_attribute *attr,
5409 		       const char *buf, size_t count)
5410 {
5411 	int status = -EINVAL;
5412 	return status;
5413 }
5414 
5415 /*
5416 # lpfc_fcp_cpu_map: Defines how to map CPUs to IRQ vectors
5417 # for the HBA.
5418 #
5419 # Value range is [0 to 1]. Default value is LPFC_HBA_CPU_MAP (1).
5420 #	0 - Do not affinitze IRQ vectors
5421 #	1 - Affintize HBA vectors with respect to each HBA
5422 #	    (start with CPU0 for each HBA)
5423 # This also defines how Hardware Queues are mapped to specific CPUs.
5424 */
5425 static int lpfc_fcp_cpu_map = LPFC_HBA_CPU_MAP;
5426 module_param(lpfc_fcp_cpu_map, int, S_IRUGO|S_IWUSR);
5427 MODULE_PARM_DESC(lpfc_fcp_cpu_map,
5428 		 "Defines how to map CPUs to IRQ vectors per HBA");
5429 
5430 /**
5431  * lpfc_fcp_cpu_map_init - Set the initial sr-iov virtual function enable
5432  * @phba: lpfc_hba pointer.
5433  * @val: link speed value.
5434  *
5435  * Description:
5436  * If val is in a valid range [0-2], then affinitze the adapter's
5437  * MSIX vectors.
5438  *
5439  * Returns:
5440  * zero if val saved.
5441  * -EINVAL val out of range
5442  **/
5443 static int
5444 lpfc_fcp_cpu_map_init(struct lpfc_hba *phba, int val)
5445 {
5446 	if (phba->sli_rev != LPFC_SLI_REV4) {
5447 		phba->cfg_fcp_cpu_map = 0;
5448 		return 0;
5449 	}
5450 
5451 	if (val >= LPFC_MIN_CPU_MAP && val <= LPFC_MAX_CPU_MAP) {
5452 		phba->cfg_fcp_cpu_map = val;
5453 		return 0;
5454 	}
5455 
5456 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5457 			"3326 lpfc_fcp_cpu_map: %d out of range, using "
5458 			"default\n", val);
5459 	phba->cfg_fcp_cpu_map = LPFC_HBA_CPU_MAP;
5460 
5461 	return 0;
5462 }
5463 
5464 static DEVICE_ATTR_RW(lpfc_fcp_cpu_map);
5465 
5466 /*
5467 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
5468 # Value range is [2,3]. Default value is 3.
5469 */
5470 LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3,
5471 		  "Select Fibre Channel class of service for FCP sequences");
5472 
5473 /*
5474 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
5475 # is [0,1]. Default value is 0.
5476 */
5477 LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1,
5478 		   "Use ADISC on rediscovery to authenticate FCP devices");
5479 
5480 /*
5481 # lpfc_first_burst_size: First burst size to use on the NPorts
5482 # that support first burst.
5483 # Value range is [0,65536]. Default value is 0.
5484 */
5485 LPFC_VPORT_ATTR_RW(first_burst_size, 0, 0, 65536,
5486 		   "First burst size for Targets that support first burst");
5487 
5488 /*
5489 * lpfc_nvmet_fb_size: NVME Target mode supported first burst size.
5490 * When the driver is configured as an NVME target, this value is
5491 * communicated to the NVME initiator in the PRLI response.  It is
5492 * used only when the lpfc_nvme_enable_fb and lpfc_nvmet_support
5493 * parameters are set and the target is sending the PRLI RSP.
5494 * Parameter supported on physical port only - no NPIV support.
5495 * Value range is [0,65536]. Default value is 0.
5496 */
5497 LPFC_ATTR_RW(nvmet_fb_size, 0, 0, 65536,
5498 	     "NVME Target mode first burst size in 512B increments.");
5499 
5500 /*
5501  * lpfc_nvme_enable_fb: Enable NVME first burst on I and T functions.
5502  * For the Initiator (I), enabling this parameter means that an NVMET
5503  * PRLI response with FBA enabled and an FB_SIZE set to a nonzero value will be
5504  * processed by the initiator for subsequent NVME FCP IO.
5505  * Currently, this feature is not supported on the NVME target
5506  * Value range is [0,1]. Default value is 0 (disabled).
5507  */
5508 LPFC_ATTR_RW(nvme_enable_fb, 0, 0, 1,
5509 	     "Enable First Burst feature for NVME Initiator.");
5510 
5511 /*
5512 # lpfc_max_scsicmpl_time: Use scsi command completion time to control I/O queue
5513 # depth. Default value is 0. When the value of this parameter is zero the
5514 # SCSI command completion time is not used for controlling I/O queue depth. When
5515 # the parameter is set to a non-zero value, the I/O queue depth is controlled
5516 # to limit the I/O completion time to the parameter value.
5517 # The value is set in milliseconds.
5518 */
5519 LPFC_VPORT_ATTR(max_scsicmpl_time, 0, 0, 60000,
5520 	"Use command completion time to control queue depth");
5521 
5522 lpfc_vport_param_show(max_scsicmpl_time);
5523 static int
5524 lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val)
5525 {
5526 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5527 	struct lpfc_nodelist *ndlp, *next_ndlp;
5528 
5529 	if (val == vport->cfg_max_scsicmpl_time)
5530 		return 0;
5531 	if ((val < 0) || (val > 60000))
5532 		return -EINVAL;
5533 	vport->cfg_max_scsicmpl_time = val;
5534 
5535 	spin_lock_irq(shost->host_lock);
5536 	list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
5537 		if (!NLP_CHK_NODE_ACT(ndlp))
5538 			continue;
5539 		if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
5540 			continue;
5541 		ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
5542 	}
5543 	spin_unlock_irq(shost->host_lock);
5544 	return 0;
5545 }
5546 lpfc_vport_param_store(max_scsicmpl_time);
5547 static DEVICE_ATTR_RW(lpfc_max_scsicmpl_time);
5548 
5549 /*
5550 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
5551 # range is [0,1]. Default value is 0.
5552 */
5553 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
5554 
5555 /*
5556 # lpfc_xri_rebalancing: enable or disable XRI rebalancing feature
5557 # range is [0,1]. Default value is 1.
5558 */
5559 LPFC_ATTR_R(xri_rebalancing, 1, 0, 1, "Enable/Disable XRI rebalancing");
5560 
5561 /*
5562  * lpfc_io_sched: Determine scheduling algrithmn for issuing FCP cmds
5563  * range is [0,1]. Default value is 0.
5564  * For [0], FCP commands are issued to Work Queues based on upper layer
5565  * hardware queue index.
5566  * For [1], FCP commands are issued to a Work Queue associated with the
5567  *          current CPU.
5568  *
5569  * LPFC_FCP_SCHED_BY_HDWQ == 0
5570  * LPFC_FCP_SCHED_BY_CPU == 1
5571  *
5572  * The driver dynamically sets this to 1 (BY_CPU) if it's able to set up cpu
5573  * affinity for FCP/NVME I/Os through Work Queues associated with the current
5574  * CPU. Otherwise, the default 0 (Round Robin) scheduling of FCP/NVME I/Os
5575  * through WQs will be used.
5576  */
5577 LPFC_ATTR_RW(fcp_io_sched, LPFC_FCP_SCHED_BY_CPU,
5578 	     LPFC_FCP_SCHED_BY_HDWQ,
5579 	     LPFC_FCP_SCHED_BY_CPU,
5580 	     "Determine scheduling algorithm for "
5581 	     "issuing commands [0] - Hardware Queue, [1] - Current CPU");
5582 
5583 /*
5584  * lpfc_ns_query: Determine algrithmn for NameServer queries after RSCN
5585  * range is [0,1]. Default value is 0.
5586  * For [0], GID_FT is used for NameServer queries after RSCN (default)
5587  * For [1], GID_PT is used for NameServer queries after RSCN
5588  *
5589  */
5590 LPFC_ATTR_RW(ns_query, LPFC_NS_QUERY_GID_FT,
5591 	     LPFC_NS_QUERY_GID_FT, LPFC_NS_QUERY_GID_PT,
5592 	     "Determine algorithm NameServer queries after RSCN "
5593 	     "[0] - GID_FT, [1] - GID_PT");
5594 
5595 /*
5596 # lpfc_fcp2_no_tgt_reset: Determine bus reset behavior
5597 # range is [0,1]. Default value is 0.
5598 # For [0], bus reset issues target reset to ALL devices
5599 # For [1], bus reset issues target reset to non-FCP2 devices
5600 */
5601 LPFC_ATTR_RW(fcp2_no_tgt_reset, 0, 0, 1, "Determine bus reset behavior for "
5602 	     "FCP2 devices [0] - issue tgt reset, [1] - no tgt reset");
5603 
5604 
5605 /*
5606 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
5607 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take
5608 # value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
5609 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if
5610 # cr_delay is set to 0.
5611 */
5612 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
5613 		"interrupt response is generated");
5614 
5615 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
5616 		"interrupt response is generated");
5617 
5618 /*
5619 # lpfc_multi_ring_support:  Determines how many rings to spread available
5620 # cmd/rsp IOCB entries across.
5621 # Value range is [1,2]. Default value is 1.
5622 */
5623 LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
5624 		"SLI rings to spread IOCB entries across");
5625 
5626 /*
5627 # lpfc_multi_ring_rctl:  If lpfc_multi_ring_support is enabled, this
5628 # identifies what rctl value to configure the additional ring for.
5629 # Value range is [1,0xff]. Default value is 4 (Unsolicated Data).
5630 */
5631 LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1,
5632 	     255, "Identifies RCTL for additional ring configuration");
5633 
5634 /*
5635 # lpfc_multi_ring_type:  If lpfc_multi_ring_support is enabled, this
5636 # identifies what type value to configure the additional ring for.
5637 # Value range is [1,0xff]. Default value is 5 (LLC/SNAP).
5638 */
5639 LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1,
5640 	     255, "Identifies TYPE for additional ring configuration");
5641 
5642 /*
5643 # lpfc_enable_SmartSAN: Sets up FDMI support for SmartSAN
5644 #       0  = SmartSAN functionality disabled (default)
5645 #       1  = SmartSAN functionality enabled
5646 # This parameter will override the value of lpfc_fdmi_on module parameter.
5647 # Value range is [0,1]. Default value is 0.
5648 */
5649 LPFC_ATTR_R(enable_SmartSAN, 0, 0, 1, "Enable SmartSAN functionality");
5650 
5651 /*
5652 # lpfc_fdmi_on: Controls FDMI support.
5653 #       0       No FDMI support
5654 #       1       Traditional FDMI support (default)
5655 # Traditional FDMI support means the driver will assume FDMI-2 support;
5656 # however, if that fails, it will fallback to FDMI-1.
5657 # If lpfc_enable_SmartSAN is set to 1, the driver ignores lpfc_fdmi_on.
5658 # If lpfc_enable_SmartSAN is set 0, the driver uses the current value of
5659 # lpfc_fdmi_on.
5660 # Value range [0,1]. Default value is 1.
5661 */
5662 LPFC_ATTR_R(fdmi_on, 1, 0, 1, "Enable FDMI support");
5663 
5664 /*
5665 # Specifies the maximum number of ELS cmds we can have outstanding (for
5666 # discovery). Value range is [1,64]. Default value = 32.
5667 */
5668 LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
5669 		 "during discovery");
5670 
5671 /*
5672 # lpfc_max_luns: maximum allowed LUN ID. This is the highest LUN ID that
5673 #    will be scanned by the SCSI midlayer when sequential scanning is
5674 #    used; and is also the highest LUN ID allowed when the SCSI midlayer
5675 #    parses REPORT_LUN responses. The lpfc driver has no LUN count or
5676 #    LUN ID limit, but the SCSI midlayer requires this field for the uses
5677 #    above. The lpfc driver limits the default value to 255 for two reasons.
5678 #    As it bounds the sequential scan loop, scanning for thousands of luns
5679 #    on a target can take minutes of wall clock time.  Additionally,
5680 #    there are FC targets, such as JBODs, that only recognize 8-bits of
5681 #    LUN ID. When they receive a value greater than 8 bits, they chop off
5682 #    the high order bits. In other words, they see LUN IDs 0, 256, 512,
5683 #    and so on all as LUN ID 0. This causes the linux kernel, which sees
5684 #    valid responses at each of the LUN IDs, to believe there are multiple
5685 #    devices present, when in fact, there is only 1.
5686 #    A customer that is aware of their target behaviors, and the results as
5687 #    indicated above, is welcome to increase the lpfc_max_luns value.
5688 #    As mentioned, this value is not used by the lpfc driver, only the
5689 #    SCSI midlayer.
5690 # Value range is [0,65535]. Default value is 255.
5691 # NOTE: The SCSI layer might probe all allowed LUN on some old targets.
5692 */
5693 LPFC_VPORT_ULL_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN ID");
5694 
5695 /*
5696 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
5697 # Value range is [1,255], default value is 10.
5698 */
5699 LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
5700 	     "Milliseconds driver will wait between polling FCP ring");
5701 
5702 /*
5703 # lpfc_task_mgmt_tmo: Maximum time to wait for task management commands
5704 # to complete in seconds. Value range is [5,180], default value is 60.
5705 */
5706 LPFC_ATTR_RW(task_mgmt_tmo, 60, 5, 180,
5707 	     "Maximum time to wait for task management commands to complete");
5708 /*
5709 # lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
5710 #		support this feature
5711 #       0  = MSI disabled
5712 #       1  = MSI enabled
5713 #       2  = MSI-X enabled (default)
5714 # Value range is [0,2]. Default value is 2.
5715 */
5716 LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
5717 	    "MSI-X (2), if possible");
5718 
5719 /*
5720  * lpfc_nvme_oas: Use the oas bit when sending NVME/NVMET IOs
5721  *
5722  *      0  = NVME OAS disabled
5723  *      1  = NVME OAS enabled
5724  *
5725  * Value range is [0,1]. Default value is 0.
5726  */
5727 LPFC_ATTR_RW(nvme_oas, 0, 0, 1,
5728 	     "Use OAS bit on NVME IOs");
5729 
5730 /*
5731  * lpfc_nvme_embed_cmd: Use the oas bit when sending NVME/NVMET IOs
5732  *
5733  *      0  = Put NVME Command in SGL
5734  *      1  = Embed NVME Command in WQE (unless G7)
5735  *      2 =  Embed NVME Command in WQE (force)
5736  *
5737  * Value range is [0,2]. Default value is 1.
5738  */
5739 LPFC_ATTR_RW(nvme_embed_cmd, 1, 0, 2,
5740 	     "Embed NVME Command in WQE");
5741 
5742 /*
5743  * lpfc_fcp_mq_threshold: Set the maximum number of Hardware Queues
5744  * the driver will advertise it supports to the SCSI layer.
5745  *
5746  *      0    = Set nr_hw_queues by the number of CPUs or HW queues.
5747  *      1,256 = Manually specify nr_hw_queue value to be advertised,
5748  *
5749  * Value range is [0,256]. Default value is 8.
5750  */
5751 LPFC_ATTR_R(fcp_mq_threshold, LPFC_FCP_MQ_THRESHOLD_DEF,
5752 	    LPFC_FCP_MQ_THRESHOLD_MIN, LPFC_FCP_MQ_THRESHOLD_MAX,
5753 	    "Set the number of SCSI Queues advertised");
5754 
5755 /*
5756  * lpfc_hdw_queue: Set the number of Hardware Queues the driver
5757  * will advertise it supports to the NVME and  SCSI layers. This also
5758  * will map to the number of CQ/WQ pairs the driver will create.
5759  *
5760  * The NVME Layer will try to create this many, plus 1 administrative
5761  * hardware queue. The administrative queue will always map to WQ 0
5762  * A hardware IO queue maps (qidx) to a specific driver CQ/WQ.
5763  *
5764  *      0    = Configure the number of hdw queues to the number of active CPUs.
5765  *      1,256 = Manually specify how many hdw queues to use.
5766  *
5767  * Value range is [0,256]. Default value is 0.
5768  */
5769 LPFC_ATTR_R(hdw_queue,
5770 	    LPFC_HBA_HDWQ_DEF,
5771 	    LPFC_HBA_HDWQ_MIN, LPFC_HBA_HDWQ_MAX,
5772 	    "Set the number of I/O Hardware Queues");
5773 
5774 static inline void
5775 lpfc_assign_default_irq_numa(struct lpfc_hba *phba)
5776 {
5777 #if IS_ENABLED(CONFIG_X86)
5778 	/* If AMD architecture, then default is LPFC_IRQ_CHANN_NUMA */
5779 	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
5780 		phba->cfg_irq_numa = 1;
5781 	else
5782 		phba->cfg_irq_numa = 0;
5783 #else
5784 	phba->cfg_irq_numa = 0;
5785 #endif
5786 }
5787 
5788 /*
5789  * lpfc_irq_chann: Set the number of IRQ vectors that are available
5790  * for Hardware Queues to utilize.  This also will map to the number
5791  * of EQ / MSI-X vectors the driver will create. This should never be
5792  * more than the number of Hardware Queues
5793  *
5794  *	0		= Configure number of IRQ Channels to:
5795  *			  if AMD architecture, number of CPUs on HBA's NUMA node
5796  *			  otherwise, number of active CPUs.
5797  *	[1,256]		= Manually specify how many IRQ Channels to use.
5798  *
5799  * Value range is [0,256]. Default value is [0].
5800  */
5801 static uint lpfc_irq_chann = LPFC_IRQ_CHANN_DEF;
5802 module_param(lpfc_irq_chann, uint, 0444);
5803 MODULE_PARM_DESC(lpfc_irq_chann, "Set number of interrupt vectors to allocate");
5804 
5805 /* lpfc_irq_chann_init - Set the hba irq_chann initial value
5806  * @phba: lpfc_hba pointer.
5807  * @val: contains the initial value
5808  *
5809  * Description:
5810  * Validates the initial value is within range and assigns it to the
5811  * adapter. If not in range, an error message is posted and the
5812  * default value is assigned.
5813  *
5814  * Returns:
5815  * zero if value is in range and is set
5816  * -EINVAL if value was out of range
5817  **/
5818 static int
5819 lpfc_irq_chann_init(struct lpfc_hba *phba, uint32_t val)
5820 {
5821 	const struct cpumask *numa_mask;
5822 
5823 	if (phba->cfg_use_msi != 2) {
5824 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5825 				"8532 use_msi = %u ignoring cfg_irq_numa\n",
5826 				phba->cfg_use_msi);
5827 		phba->cfg_irq_numa = 0;
5828 		phba->cfg_irq_chann = LPFC_IRQ_CHANN_MIN;
5829 		return 0;
5830 	}
5831 
5832 	/* Check if default setting was passed */
5833 	if (val == LPFC_IRQ_CHANN_DEF)
5834 		lpfc_assign_default_irq_numa(phba);
5835 
5836 	if (phba->cfg_irq_numa) {
5837 		numa_mask = &phba->sli4_hba.numa_mask;
5838 
5839 		if (cpumask_empty(numa_mask)) {
5840 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5841 					"8533 Could not identify NUMA node, "
5842 					"ignoring cfg_irq_numa\n");
5843 			phba->cfg_irq_numa = 0;
5844 			phba->cfg_irq_chann = LPFC_IRQ_CHANN_MIN;
5845 		} else {
5846 			phba->cfg_irq_chann = cpumask_weight(numa_mask);
5847 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5848 					"8543 lpfc_irq_chann set to %u "
5849 					"(numa)\n", phba->cfg_irq_chann);
5850 		}
5851 	} else {
5852 		if (val > LPFC_IRQ_CHANN_MAX) {
5853 			lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5854 					"8545 lpfc_irq_chann attribute cannot "
5855 					"be set to %u, allowed range is "
5856 					"[%u,%u]\n",
5857 					val,
5858 					LPFC_IRQ_CHANN_MIN,
5859 					LPFC_IRQ_CHANN_MAX);
5860 			phba->cfg_irq_chann = LPFC_IRQ_CHANN_MIN;
5861 			return -EINVAL;
5862 		}
5863 		phba->cfg_irq_chann = val;
5864 	}
5865 
5866 	return 0;
5867 }
5868 
5869 /**
5870  * lpfc_irq_chann_show - Display value of irq_chann
5871  * @dev: class converted to a Scsi_host structure.
5872  * @attr: device attribute, not used.
5873  * @buf: on return contains a string with the list sizes
5874  *
5875  * Returns: size of formatted string.
5876  **/
5877 static ssize_t
5878 lpfc_irq_chann_show(struct device *dev, struct device_attribute *attr,
5879 		    char *buf)
5880 {
5881 	struct Scsi_Host *shost = class_to_shost(dev);
5882 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5883 	struct lpfc_hba *phba = vport->phba;
5884 
5885 	return scnprintf(buf, PAGE_SIZE, "%u\n", phba->cfg_irq_chann);
5886 }
5887 
5888 static DEVICE_ATTR_RO(lpfc_irq_chann);
5889 
5890 /*
5891 # lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware.
5892 #       0  = HBA resets disabled
5893 #       1  = HBA resets enabled (default)
5894 #       2  = HBA reset via PCI bus reset enabled
5895 # Value range is [0,2]. Default value is 1.
5896 */
5897 LPFC_ATTR_RW(enable_hba_reset, 1, 0, 2, "Enable HBA resets from the driver.");
5898 
5899 /*
5900 # lpfc_enable_hba_heartbeat: Disable HBA heartbeat timer..
5901 #       0  = HBA Heartbeat disabled
5902 #       1  = HBA Heartbeat enabled (default)
5903 # Value range is [0,1]. Default value is 1.
5904 */
5905 LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat.");
5906 
5907 /*
5908 # lpfc_EnableXLane: Enable Express Lane Feature
5909 #      0x0   Express Lane Feature disabled
5910 #      0x1   Express Lane Feature enabled
5911 # Value range is [0,1]. Default value is 0.
5912 */
5913 LPFC_ATTR_R(EnableXLane, 0, 0, 1, "Enable Express Lane Feature.");
5914 
5915 /*
5916 # lpfc_XLanePriority:  Define CS_CTL priority for Express Lane Feature
5917 #       0x0 - 0x7f  = CS_CTL field in FC header (high 7 bits)
5918 # Value range is [0x0,0x7f]. Default value is 0
5919 */
5920 LPFC_ATTR_RW(XLanePriority, 0, 0x0, 0x7f, "CS_CTL for Express Lane Feature.");
5921 
5922 /*
5923 # lpfc_enable_bg: Enable BlockGuard (Emulex's Implementation of T10-DIF)
5924 #       0  = BlockGuard disabled (default)
5925 #       1  = BlockGuard enabled
5926 # Value range is [0,1]. Default value is 0.
5927 */
5928 LPFC_ATTR_R(enable_bg, 0, 0, 1, "Enable BlockGuard Support");
5929 
5930 /*
5931 # lpfc_prot_mask: i
5932 #	- Bit mask of host protection capabilities used to register with the
5933 #	  SCSI mid-layer
5934 # 	- Only meaningful if BG is turned on (lpfc_enable_bg=1).
5935 #	- Allows you to ultimately specify which profiles to use
5936 #	- Default will result in registering capabilities for all profiles.
5937 #	- SHOST_DIF_TYPE1_PROTECTION	1
5938 #		HBA supports T10 DIF Type 1: HBA to Target Type 1 Protection
5939 #	- SHOST_DIX_TYPE0_PROTECTION	8
5940 #		HBA supports DIX Type 0: Host to HBA protection only
5941 #	- SHOST_DIX_TYPE1_PROTECTION	16
5942 #		HBA supports DIX Type 1: Host to HBA  Type 1 protection
5943 #
5944 */
5945 LPFC_ATTR(prot_mask,
5946 	(SHOST_DIF_TYPE1_PROTECTION |
5947 	SHOST_DIX_TYPE0_PROTECTION |
5948 	SHOST_DIX_TYPE1_PROTECTION),
5949 	0,
5950 	(SHOST_DIF_TYPE1_PROTECTION |
5951 	SHOST_DIX_TYPE0_PROTECTION |
5952 	SHOST_DIX_TYPE1_PROTECTION),
5953 	"T10-DIF host protection capabilities mask");
5954 
5955 /*
5956 # lpfc_prot_guard: i
5957 #	- Bit mask of protection guard types to register with the SCSI mid-layer
5958 #	- Guard types are currently either 1) T10-DIF CRC 2) IP checksum
5959 #	- Allows you to ultimately specify which profiles to use
5960 #	- Default will result in registering capabilities for all guard types
5961 #
5962 */
5963 LPFC_ATTR(prot_guard,
5964 	SHOST_DIX_GUARD_IP, SHOST_DIX_GUARD_CRC, SHOST_DIX_GUARD_IP,
5965 	"T10-DIF host protection guard type");
5966 
5967 /*
5968  * Delay initial NPort discovery when Clean Address bit is cleared in
5969  * FLOGI/FDISC accept and FCID/Fabric name/Fabric portname is changed.
5970  * This parameter can have value 0 or 1.
5971  * When this parameter is set to 0, no delay is added to the initial
5972  * discovery.
5973  * When this parameter is set to non-zero value, initial Nport discovery is
5974  * delayed by ra_tov seconds when Clean Address bit is cleared in FLOGI/FDISC
5975  * accept and FCID/Fabric name/Fabric portname is changed.
5976  * Driver always delay Nport discovery for subsequent FLOGI/FDISC completion
5977  * when Clean Address bit is cleared in FLOGI/FDISC
5978  * accept and FCID/Fabric name/Fabric portname is changed.
5979  * Default value is 0.
5980  */
5981 LPFC_ATTR(delay_discovery, 0, 0, 1,
5982 	"Delay NPort discovery when Clean Address bit is cleared.");
5983 
5984 /*
5985  * lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count
5986  * This value can be set to values between 64 and 4096. The default value
5987  * is 64, but may be increased to allow for larger Max I/O sizes. The scsi
5988  * and nvme layers will allow I/O sizes up to (MAX_SEG_COUNT * SEG_SIZE).
5989  * Because of the additional overhead involved in setting up T10-DIF,
5990  * this parameter will be limited to 128 if BlockGuard is enabled under SLI4
5991  * and will be limited to 512 if BlockGuard is enabled under SLI3.
5992  */
5993 static uint lpfc_sg_seg_cnt = LPFC_DEFAULT_SG_SEG_CNT;
5994 module_param(lpfc_sg_seg_cnt, uint, 0444);
5995 MODULE_PARM_DESC(lpfc_sg_seg_cnt, "Max Scatter Gather Segment Count");
5996 
5997 /**
5998  * lpfc_sg_seg_cnt_show - Display the scatter/gather list sizes
5999  *    configured for the adapter
6000  * @dev: class converted to a Scsi_host structure.
6001  * @attr: device attribute, not used.
6002  * @buf: on return contains a string with the list sizes
6003  *
6004  * Returns: size of formatted string.
6005  **/
6006 static ssize_t
6007 lpfc_sg_seg_cnt_show(struct device *dev, struct device_attribute *attr,
6008 		     char *buf)
6009 {
6010 	struct Scsi_Host  *shost = class_to_shost(dev);
6011 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
6012 	struct lpfc_hba   *phba = vport->phba;
6013 	int len;
6014 
6015 	len = scnprintf(buf, PAGE_SIZE, "SGL sz: %d  total SGEs: %d\n",
6016 		       phba->cfg_sg_dma_buf_size, phba->cfg_total_seg_cnt);
6017 
6018 	len += scnprintf(buf + len, PAGE_SIZE, "Cfg: %d  SCSI: %d  NVME: %d\n",
6019 			phba->cfg_sg_seg_cnt, phba->cfg_scsi_seg_cnt,
6020 			phba->cfg_nvme_seg_cnt);
6021 	return len;
6022 }
6023 
6024 static DEVICE_ATTR_RO(lpfc_sg_seg_cnt);
6025 
6026 /**
6027  * lpfc_sg_seg_cnt_init - Set the hba sg_seg_cnt initial value
6028  * @phba: lpfc_hba pointer.
6029  * @val: contains the initial value
6030  *
6031  * Description:
6032  * Validates the initial value is within range and assigns it to the
6033  * adapter. If not in range, an error message is posted and the
6034  * default value is assigned.
6035  *
6036  * Returns:
6037  * zero if value is in range and is set
6038  * -EINVAL if value was out of range
6039  **/
6040 static int
6041 lpfc_sg_seg_cnt_init(struct lpfc_hba *phba, int val)
6042 {
6043 	if (val >= LPFC_MIN_SG_SEG_CNT && val <= LPFC_MAX_SG_SEG_CNT) {
6044 		phba->cfg_sg_seg_cnt = val;
6045 		return 0;
6046 	}
6047 	lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6048 			"0409 "LPFC_DRIVER_NAME"_sg_seg_cnt attribute cannot "
6049 			"be set to %d, allowed range is [%d, %d]\n",
6050 			val, LPFC_MIN_SG_SEG_CNT, LPFC_MAX_SG_SEG_CNT);
6051 	phba->cfg_sg_seg_cnt = LPFC_DEFAULT_SG_SEG_CNT;
6052 	return -EINVAL;
6053 }
6054 
6055 /*
6056  * lpfc_enable_mds_diags: Enable MDS Diagnostics
6057  *       0  = MDS Diagnostics disabled (default)
6058  *       1  = MDS Diagnostics enabled
6059  * Value range is [0,1]. Default value is 0.
6060  */
6061 LPFC_ATTR_RW(enable_mds_diags, 0, 0, 1, "Enable MDS Diagnostics");
6062 
6063 /*
6064  * lpfc_ras_fwlog_buffsize: Firmware logging host buffer size
6065  *	0 = Disable firmware logging (default)
6066  *	[1-4] = Multiple of 1/4th Mb of host memory for FW logging
6067  * Value range [0..4]. Default value is 0
6068  */
6069 LPFC_ATTR(ras_fwlog_buffsize, 0, 0, 4, "Host memory for FW logging");
6070 lpfc_param_show(ras_fwlog_buffsize);
6071 
6072 static ssize_t
6073 lpfc_ras_fwlog_buffsize_set(struct lpfc_hba  *phba, uint val)
6074 {
6075 	int ret = 0;
6076 	enum ras_state state;
6077 
6078 	if (!lpfc_rangecheck(val, 0, 4))
6079 		return -EINVAL;
6080 
6081 	if (phba->cfg_ras_fwlog_buffsize == val)
6082 		return 0;
6083 
6084 	if (phba->cfg_ras_fwlog_func != PCI_FUNC(phba->pcidev->devfn))
6085 		return -EINVAL;
6086 
6087 	spin_lock_irq(&phba->hbalock);
6088 	state = phba->ras_fwlog.state;
6089 	spin_unlock_irq(&phba->hbalock);
6090 
6091 	if (state == REG_INPROGRESS) {
6092 		lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "6147 RAS Logging "
6093 				"registration is in progress\n");
6094 		return -EBUSY;
6095 	}
6096 
6097 	/* For disable logging: stop the logs and free the DMA.
6098 	 * For ras_fwlog_buffsize size change we still need to free and
6099 	 * reallocate the DMA in lpfc_sli4_ras_fwlog_init.
6100 	 */
6101 	phba->cfg_ras_fwlog_buffsize = val;
6102 	if (state == ACTIVE) {
6103 		lpfc_ras_stop_fwlog(phba);
6104 		lpfc_sli4_ras_dma_free(phba);
6105 	}
6106 
6107 	lpfc_sli4_ras_init(phba);
6108 	if (phba->ras_fwlog.ras_enabled)
6109 		ret = lpfc_sli4_ras_fwlog_init(phba, phba->cfg_ras_fwlog_level,
6110 					       LPFC_RAS_ENABLE_LOGGING);
6111 	return ret;
6112 }
6113 
6114 lpfc_param_store(ras_fwlog_buffsize);
6115 static DEVICE_ATTR_RW(lpfc_ras_fwlog_buffsize);
6116 
6117 /*
6118  * lpfc_ras_fwlog_level: Firmware logging verbosity level
6119  * Valid only if firmware logging is enabled
6120  * 0(Least Verbosity) 4 (most verbosity)
6121  * Value range is [0..4]. Default value is 0
6122  */
6123 LPFC_ATTR_RW(ras_fwlog_level, 0, 0, 4, "Firmware Logging Level");
6124 
6125 /*
6126  * lpfc_ras_fwlog_func: Firmware logging enabled on function number
6127  * Default function which has RAS support : 0
6128  * Value Range is [0..7].
6129  * FW logging is a global action and enablement is via a specific
6130  * port.
6131  */
6132 LPFC_ATTR_RW(ras_fwlog_func, 0, 0, 7, "Firmware Logging Enabled on Function");
6133 
6134 /*
6135  * lpfc_enable_bbcr: Enable BB Credit Recovery
6136  *       0  = BB Credit Recovery disabled
6137  *       1  = BB Credit Recovery enabled (default)
6138  * Value range is [0,1]. Default value is 1.
6139  */
6140 LPFC_BBCR_ATTR_RW(enable_bbcr, 1, 0, 1, "Enable BBC Recovery");
6141 
6142 /*
6143  * lpfc_enable_dpp: Enable DPP on G7
6144  *       0  = DPP on G7 disabled
6145  *       1  = DPP on G7 enabled (default)
6146  * Value range is [0,1]. Default value is 1.
6147  */
6148 LPFC_ATTR_RW(enable_dpp, 1, 0, 1, "Enable Direct Packet Push");
6149 
6150 struct device_attribute *lpfc_hba_attrs[] = {
6151 	&dev_attr_nvme_info,
6152 	&dev_attr_scsi_stat,
6153 	&dev_attr_bg_info,
6154 	&dev_attr_bg_guard_err,
6155 	&dev_attr_bg_apptag_err,
6156 	&dev_attr_bg_reftag_err,
6157 	&dev_attr_info,
6158 	&dev_attr_serialnum,
6159 	&dev_attr_modeldesc,
6160 	&dev_attr_modelname,
6161 	&dev_attr_programtype,
6162 	&dev_attr_portnum,
6163 	&dev_attr_fwrev,
6164 	&dev_attr_hdw,
6165 	&dev_attr_option_rom_version,
6166 	&dev_attr_link_state,
6167 	&dev_attr_num_discovered_ports,
6168 	&dev_attr_menlo_mgmt_mode,
6169 	&dev_attr_lpfc_drvr_version,
6170 	&dev_attr_lpfc_enable_fip,
6171 	&dev_attr_lpfc_temp_sensor,
6172 	&dev_attr_lpfc_log_verbose,
6173 	&dev_attr_lpfc_lun_queue_depth,
6174 	&dev_attr_lpfc_tgt_queue_depth,
6175 	&dev_attr_lpfc_hba_queue_depth,
6176 	&dev_attr_lpfc_peer_port_login,
6177 	&dev_attr_lpfc_nodev_tmo,
6178 	&dev_attr_lpfc_devloss_tmo,
6179 	&dev_attr_lpfc_enable_fc4_type,
6180 	&dev_attr_lpfc_fcp_class,
6181 	&dev_attr_lpfc_use_adisc,
6182 	&dev_attr_lpfc_first_burst_size,
6183 	&dev_attr_lpfc_ack0,
6184 	&dev_attr_lpfc_xri_rebalancing,
6185 	&dev_attr_lpfc_topology,
6186 	&dev_attr_lpfc_scan_down,
6187 	&dev_attr_lpfc_link_speed,
6188 	&dev_attr_lpfc_fcp_io_sched,
6189 	&dev_attr_lpfc_ns_query,
6190 	&dev_attr_lpfc_fcp2_no_tgt_reset,
6191 	&dev_attr_lpfc_cr_delay,
6192 	&dev_attr_lpfc_cr_count,
6193 	&dev_attr_lpfc_multi_ring_support,
6194 	&dev_attr_lpfc_multi_ring_rctl,
6195 	&dev_attr_lpfc_multi_ring_type,
6196 	&dev_attr_lpfc_fdmi_on,
6197 	&dev_attr_lpfc_enable_SmartSAN,
6198 	&dev_attr_lpfc_max_luns,
6199 	&dev_attr_lpfc_enable_npiv,
6200 	&dev_attr_lpfc_fcf_failover_policy,
6201 	&dev_attr_lpfc_enable_rrq,
6202 	&dev_attr_nport_evt_cnt,
6203 	&dev_attr_board_mode,
6204 	&dev_attr_max_vpi,
6205 	&dev_attr_used_vpi,
6206 	&dev_attr_max_rpi,
6207 	&dev_attr_used_rpi,
6208 	&dev_attr_max_xri,
6209 	&dev_attr_used_xri,
6210 	&dev_attr_npiv_info,
6211 	&dev_attr_issue_reset,
6212 	&dev_attr_lpfc_poll,
6213 	&dev_attr_lpfc_poll_tmo,
6214 	&dev_attr_lpfc_task_mgmt_tmo,
6215 	&dev_attr_lpfc_use_msi,
6216 	&dev_attr_lpfc_nvme_oas,
6217 	&dev_attr_lpfc_nvme_embed_cmd,
6218 	&dev_attr_lpfc_fcp_imax,
6219 	&dev_attr_lpfc_force_rscn,
6220 	&dev_attr_lpfc_cq_poll_threshold,
6221 	&dev_attr_lpfc_cq_max_proc_limit,
6222 	&dev_attr_lpfc_fcp_cpu_map,
6223 	&dev_attr_lpfc_fcp_mq_threshold,
6224 	&dev_attr_lpfc_hdw_queue,
6225 	&dev_attr_lpfc_irq_chann,
6226 	&dev_attr_lpfc_suppress_rsp,
6227 	&dev_attr_lpfc_nvmet_mrq,
6228 	&dev_attr_lpfc_nvmet_mrq_post,
6229 	&dev_attr_lpfc_nvme_enable_fb,
6230 	&dev_attr_lpfc_nvmet_fb_size,
6231 	&dev_attr_lpfc_enable_bg,
6232 	&dev_attr_lpfc_soft_wwnn,
6233 	&dev_attr_lpfc_soft_wwpn,
6234 	&dev_attr_lpfc_soft_wwn_enable,
6235 	&dev_attr_lpfc_enable_hba_reset,
6236 	&dev_attr_lpfc_enable_hba_heartbeat,
6237 	&dev_attr_lpfc_EnableXLane,
6238 	&dev_attr_lpfc_XLanePriority,
6239 	&dev_attr_lpfc_xlane_lun,
6240 	&dev_attr_lpfc_xlane_tgt,
6241 	&dev_attr_lpfc_xlane_vpt,
6242 	&dev_attr_lpfc_xlane_lun_state,
6243 	&dev_attr_lpfc_xlane_lun_status,
6244 	&dev_attr_lpfc_xlane_priority,
6245 	&dev_attr_lpfc_sg_seg_cnt,
6246 	&dev_attr_lpfc_max_scsicmpl_time,
6247 	&dev_attr_lpfc_stat_data_ctrl,
6248 	&dev_attr_lpfc_aer_support,
6249 	&dev_attr_lpfc_aer_state_cleanup,
6250 	&dev_attr_lpfc_sriov_nr_virtfn,
6251 	&dev_attr_lpfc_req_fw_upgrade,
6252 	&dev_attr_lpfc_suppress_link_up,
6253 	&dev_attr_iocb_hw,
6254 	&dev_attr_pls,
6255 	&dev_attr_pt,
6256 	&dev_attr_txq_hw,
6257 	&dev_attr_txcmplq_hw,
6258 	&dev_attr_lpfc_fips_level,
6259 	&dev_attr_lpfc_fips_rev,
6260 	&dev_attr_lpfc_dss,
6261 	&dev_attr_lpfc_sriov_hw_max_virtfn,
6262 	&dev_attr_protocol,
6263 	&dev_attr_lpfc_xlane_supported,
6264 	&dev_attr_lpfc_enable_mds_diags,
6265 	&dev_attr_lpfc_ras_fwlog_buffsize,
6266 	&dev_attr_lpfc_ras_fwlog_level,
6267 	&dev_attr_lpfc_ras_fwlog_func,
6268 	&dev_attr_lpfc_enable_bbcr,
6269 	&dev_attr_lpfc_enable_dpp,
6270 	NULL,
6271 };
6272 
6273 struct device_attribute *lpfc_vport_attrs[] = {
6274 	&dev_attr_info,
6275 	&dev_attr_link_state,
6276 	&dev_attr_num_discovered_ports,
6277 	&dev_attr_lpfc_drvr_version,
6278 	&dev_attr_lpfc_log_verbose,
6279 	&dev_attr_lpfc_lun_queue_depth,
6280 	&dev_attr_lpfc_tgt_queue_depth,
6281 	&dev_attr_lpfc_nodev_tmo,
6282 	&dev_attr_lpfc_devloss_tmo,
6283 	&dev_attr_lpfc_hba_queue_depth,
6284 	&dev_attr_lpfc_peer_port_login,
6285 	&dev_attr_lpfc_restrict_login,
6286 	&dev_attr_lpfc_fcp_class,
6287 	&dev_attr_lpfc_use_adisc,
6288 	&dev_attr_lpfc_first_burst_size,
6289 	&dev_attr_lpfc_max_luns,
6290 	&dev_attr_nport_evt_cnt,
6291 	&dev_attr_npiv_info,
6292 	&dev_attr_lpfc_enable_da_id,
6293 	&dev_attr_lpfc_max_scsicmpl_time,
6294 	&dev_attr_lpfc_stat_data_ctrl,
6295 	&dev_attr_lpfc_static_vport,
6296 	&dev_attr_lpfc_fips_level,
6297 	&dev_attr_lpfc_fips_rev,
6298 	NULL,
6299 };
6300 
6301 /**
6302  * sysfs_ctlreg_write - Write method for writing to ctlreg
6303  * @filp: open sysfs file
6304  * @kobj: kernel kobject that contains the kernel class device.
6305  * @bin_attr: kernel attributes passed to us.
6306  * @buf: contains the data to be written to the adapter IOREG space.
6307  * @off: offset into buffer to beginning of data.
6308  * @count: bytes to transfer.
6309  *
6310  * Description:
6311  * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
6312  * Uses the adapter io control registers to send buf contents to the adapter.
6313  *
6314  * Returns:
6315  * -ERANGE off and count combo out of range
6316  * -EINVAL off, count or buff address invalid
6317  * -EPERM adapter is offline
6318  * value of count, buf contents written
6319  **/
6320 static ssize_t
6321 sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
6322 		   struct bin_attribute *bin_attr,
6323 		   char *buf, loff_t off, size_t count)
6324 {
6325 	size_t buf_off;
6326 	struct device *dev = container_of(kobj, struct device, kobj);
6327 	struct Scsi_Host  *shost = class_to_shost(dev);
6328 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6329 	struct lpfc_hba   *phba = vport->phba;
6330 
6331 	if (phba->sli_rev >= LPFC_SLI_REV4)
6332 		return -EPERM;
6333 
6334 	if ((off + count) > FF_REG_AREA_SIZE)
6335 		return -ERANGE;
6336 
6337 	if (count <= LPFC_REG_WRITE_KEY_SIZE)
6338 		return 0;
6339 
6340 	if (off % 4 || count % 4 || (unsigned long)buf % 4)
6341 		return -EINVAL;
6342 
6343 	/* This is to protect HBA registers from accidental writes. */
6344 	if (memcmp(buf, LPFC_REG_WRITE_KEY, LPFC_REG_WRITE_KEY_SIZE))
6345 		return -EINVAL;
6346 
6347 	if (!(vport->fc_flag & FC_OFFLINE_MODE))
6348 		return -EPERM;
6349 
6350 	spin_lock_irq(&phba->hbalock);
6351 	for (buf_off = 0; buf_off < count - LPFC_REG_WRITE_KEY_SIZE;
6352 			buf_off += sizeof(uint32_t))
6353 		writel(*((uint32_t *)(buf + buf_off + LPFC_REG_WRITE_KEY_SIZE)),
6354 		       phba->ctrl_regs_memmap_p + off + buf_off);
6355 
6356 	spin_unlock_irq(&phba->hbalock);
6357 
6358 	return count;
6359 }
6360 
6361 /**
6362  * sysfs_ctlreg_read - Read method for reading from ctlreg
6363  * @filp: open sysfs file
6364  * @kobj: kernel kobject that contains the kernel class device.
6365  * @bin_attr: kernel attributes passed to us.
6366  * @buf: if successful contains the data from the adapter IOREG space.
6367  * @off: offset into buffer to beginning of data.
6368  * @count: bytes to transfer.
6369  *
6370  * Description:
6371  * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
6372  * Uses the adapter io control registers to read data into buf.
6373  *
6374  * Returns:
6375  * -ERANGE off and count combo out of range
6376  * -EINVAL off, count or buff address invalid
6377  * value of count, buf contents read
6378  **/
6379 static ssize_t
6380 sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
6381 		  struct bin_attribute *bin_attr,
6382 		  char *buf, loff_t off, size_t count)
6383 {
6384 	size_t buf_off;
6385 	uint32_t * tmp_ptr;
6386 	struct device *dev = container_of(kobj, struct device, kobj);
6387 	struct Scsi_Host  *shost = class_to_shost(dev);
6388 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6389 	struct lpfc_hba   *phba = vport->phba;
6390 
6391 	if (phba->sli_rev >= LPFC_SLI_REV4)
6392 		return -EPERM;
6393 
6394 	if (off > FF_REG_AREA_SIZE)
6395 		return -ERANGE;
6396 
6397 	if ((off + count) > FF_REG_AREA_SIZE)
6398 		count = FF_REG_AREA_SIZE - off;
6399 
6400 	if (count == 0) return 0;
6401 
6402 	if (off % 4 || count % 4 || (unsigned long)buf % 4)
6403 		return -EINVAL;
6404 
6405 	spin_lock_irq(&phba->hbalock);
6406 
6407 	for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
6408 		tmp_ptr = (uint32_t *)(buf + buf_off);
6409 		*tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
6410 	}
6411 
6412 	spin_unlock_irq(&phba->hbalock);
6413 
6414 	return count;
6415 }
6416 
6417 static struct bin_attribute sysfs_ctlreg_attr = {
6418 	.attr = {
6419 		.name = "ctlreg",
6420 		.mode = S_IRUSR | S_IWUSR,
6421 	},
6422 	.size = 256,
6423 	.read = sysfs_ctlreg_read,
6424 	.write = sysfs_ctlreg_write,
6425 };
6426 
6427 /**
6428  * sysfs_mbox_write - Write method for writing information via mbox
6429  * @filp: open sysfs file
6430  * @kobj: kernel kobject that contains the kernel class device.
6431  * @bin_attr: kernel attributes passed to us.
6432  * @buf: contains the data to be written to sysfs mbox.
6433  * @off: offset into buffer to beginning of data.
6434  * @count: bytes to transfer.
6435  *
6436  * Description:
6437  * Deprecated function. All mailbox access from user space is performed via the
6438  * bsg interface.
6439  *
6440  * Returns:
6441  * -EPERM operation not permitted
6442  **/
6443 static ssize_t
6444 sysfs_mbox_write(struct file *filp, struct kobject *kobj,
6445 		 struct bin_attribute *bin_attr,
6446 		 char *buf, loff_t off, size_t count)
6447 {
6448 	return -EPERM;
6449 }
6450 
6451 /**
6452  * sysfs_mbox_read - Read method for reading information via mbox
6453  * @filp: open sysfs file
6454  * @kobj: kernel kobject that contains the kernel class device.
6455  * @bin_attr: kernel attributes passed to us.
6456  * @buf: contains the data to be read from sysfs mbox.
6457  * @off: offset into buffer to beginning of data.
6458  * @count: bytes to transfer.
6459  *
6460  * Description:
6461  * Deprecated function. All mailbox access from user space is performed via the
6462  * bsg interface.
6463  *
6464  * Returns:
6465  * -EPERM operation not permitted
6466  **/
6467 static ssize_t
6468 sysfs_mbox_read(struct file *filp, struct kobject *kobj,
6469 		struct bin_attribute *bin_attr,
6470 		char *buf, loff_t off, size_t count)
6471 {
6472 	return -EPERM;
6473 }
6474 
6475 static struct bin_attribute sysfs_mbox_attr = {
6476 	.attr = {
6477 		.name = "mbox",
6478 		.mode = S_IRUSR | S_IWUSR,
6479 	},
6480 	.size = MAILBOX_SYSFS_MAX,
6481 	.read = sysfs_mbox_read,
6482 	.write = sysfs_mbox_write,
6483 };
6484 
6485 /**
6486  * lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries
6487  * @vport: address of lpfc vport structure.
6488  *
6489  * Return codes:
6490  * zero on success
6491  * error return code from sysfs_create_bin_file()
6492  **/
6493 int
6494 lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
6495 {
6496 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6497 	int error;
6498 
6499 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
6500 				      &sysfs_drvr_stat_data_attr);
6501 
6502 	/* Virtual ports do not need ctrl_reg and mbox */
6503 	if (error || vport->port_type == LPFC_NPIV_PORT)
6504 		goto out;
6505 
6506 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
6507 				      &sysfs_ctlreg_attr);
6508 	if (error)
6509 		goto out_remove_stat_attr;
6510 
6511 	error = sysfs_create_bin_file(&shost->shost_dev.kobj,
6512 				      &sysfs_mbox_attr);
6513 	if (error)
6514 		goto out_remove_ctlreg_attr;
6515 
6516 	return 0;
6517 out_remove_ctlreg_attr:
6518 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
6519 out_remove_stat_attr:
6520 	sysfs_remove_bin_file(&shost->shost_dev.kobj,
6521 			&sysfs_drvr_stat_data_attr);
6522 out:
6523 	return error;
6524 }
6525 
6526 /**
6527  * lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries
6528  * @vport: address of lpfc vport structure.
6529  **/
6530 void
6531 lpfc_free_sysfs_attr(struct lpfc_vport *vport)
6532 {
6533 	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6534 	sysfs_remove_bin_file(&shost->shost_dev.kobj,
6535 		&sysfs_drvr_stat_data_attr);
6536 	/* Virtual ports do not need ctrl_reg and mbox */
6537 	if (vport->port_type == LPFC_NPIV_PORT)
6538 		return;
6539 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_mbox_attr);
6540 	sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
6541 }
6542 
6543 /*
6544  * Dynamic FC Host Attributes Support
6545  */
6546 
6547 /**
6548  * lpfc_get_host_symbolic_name - Copy symbolic name into the scsi host
6549  * @shost: kernel scsi host pointer.
6550  **/
6551 static void
6552 lpfc_get_host_symbolic_name(struct Scsi_Host *shost)
6553 {
6554 	struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
6555 
6556 	lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
6557 				      sizeof fc_host_symbolic_name(shost));
6558 }
6559 
6560 /**
6561  * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id
6562  * @shost: kernel scsi host pointer.
6563  **/
6564 static void
6565 lpfc_get_host_port_id(struct Scsi_Host *shost)
6566 {
6567 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6568 
6569 	/* note: fc_myDID already in cpu endianness */
6570 	fc_host_port_id(shost) = vport->fc_myDID;
6571 }
6572 
6573 /**
6574  * lpfc_get_host_port_type - Set the value of the scsi host port type
6575  * @shost: kernel scsi host pointer.
6576  **/
6577 static void
6578 lpfc_get_host_port_type(struct Scsi_Host *shost)
6579 {
6580 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6581 	struct lpfc_hba   *phba = vport->phba;
6582 
6583 	spin_lock_irq(shost->host_lock);
6584 
6585 	if (vport->port_type == LPFC_NPIV_PORT) {
6586 		fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
6587 	} else if (lpfc_is_link_up(phba)) {
6588 		if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
6589 			if (vport->fc_flag & FC_PUBLIC_LOOP)
6590 				fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
6591 			else
6592 				fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
6593 		} else {
6594 			if (vport->fc_flag & FC_FABRIC)
6595 				fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
6596 			else
6597 				fc_host_port_type(shost) = FC_PORTTYPE_PTP;
6598 		}
6599 	} else
6600 		fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
6601 
6602 	spin_unlock_irq(shost->host_lock);
6603 }
6604 
6605 /**
6606  * lpfc_get_host_port_state - Set the value of the scsi host port state
6607  * @shost: kernel scsi host pointer.
6608  **/
6609 static void
6610 lpfc_get_host_port_state(struct Scsi_Host *shost)
6611 {
6612 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6613 	struct lpfc_hba   *phba = vport->phba;
6614 
6615 	spin_lock_irq(shost->host_lock);
6616 
6617 	if (vport->fc_flag & FC_OFFLINE_MODE)
6618 		fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
6619 	else {
6620 		switch (phba->link_state) {
6621 		case LPFC_LINK_UNKNOWN:
6622 		case LPFC_LINK_DOWN:
6623 			fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
6624 			break;
6625 		case LPFC_LINK_UP:
6626 		case LPFC_CLEAR_LA:
6627 		case LPFC_HBA_READY:
6628 			/* Links up, reports port state accordingly */
6629 			if (vport->port_state < LPFC_VPORT_READY)
6630 				fc_host_port_state(shost) =
6631 							FC_PORTSTATE_BYPASSED;
6632 			else
6633 				fc_host_port_state(shost) =
6634 							FC_PORTSTATE_ONLINE;
6635 			break;
6636 		case LPFC_HBA_ERROR:
6637 			fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
6638 			break;
6639 		default:
6640 			fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
6641 			break;
6642 		}
6643 	}
6644 
6645 	spin_unlock_irq(shost->host_lock);
6646 }
6647 
6648 /**
6649  * lpfc_get_host_speed - Set the value of the scsi host speed
6650  * @shost: kernel scsi host pointer.
6651  **/
6652 static void
6653 lpfc_get_host_speed(struct Scsi_Host *shost)
6654 {
6655 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6656 	struct lpfc_hba   *phba = vport->phba;
6657 
6658 	spin_lock_irq(shost->host_lock);
6659 
6660 	if ((lpfc_is_link_up(phba)) && (!(phba->hba_flag & HBA_FCOE_MODE))) {
6661 		switch(phba->fc_linkspeed) {
6662 		case LPFC_LINK_SPEED_1GHZ:
6663 			fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
6664 			break;
6665 		case LPFC_LINK_SPEED_2GHZ:
6666 			fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
6667 			break;
6668 		case LPFC_LINK_SPEED_4GHZ:
6669 			fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
6670 			break;
6671 		case LPFC_LINK_SPEED_8GHZ:
6672 			fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
6673 			break;
6674 		case LPFC_LINK_SPEED_10GHZ:
6675 			fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
6676 			break;
6677 		case LPFC_LINK_SPEED_16GHZ:
6678 			fc_host_speed(shost) = FC_PORTSPEED_16GBIT;
6679 			break;
6680 		case LPFC_LINK_SPEED_32GHZ:
6681 			fc_host_speed(shost) = FC_PORTSPEED_32GBIT;
6682 			break;
6683 		case LPFC_LINK_SPEED_64GHZ:
6684 			fc_host_speed(shost) = FC_PORTSPEED_64GBIT;
6685 			break;
6686 		case LPFC_LINK_SPEED_128GHZ:
6687 			fc_host_speed(shost) = FC_PORTSPEED_128GBIT;
6688 			break;
6689 		default:
6690 			fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
6691 			break;
6692 		}
6693 	} else if (lpfc_is_link_up(phba) && (phba->hba_flag & HBA_FCOE_MODE)) {
6694 		switch (phba->fc_linkspeed) {
6695 		case LPFC_ASYNC_LINK_SPEED_10GBPS:
6696 			fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
6697 			break;
6698 		case LPFC_ASYNC_LINK_SPEED_25GBPS:
6699 			fc_host_speed(shost) = FC_PORTSPEED_25GBIT;
6700 			break;
6701 		case LPFC_ASYNC_LINK_SPEED_40GBPS:
6702 			fc_host_speed(shost) = FC_PORTSPEED_40GBIT;
6703 			break;
6704 		case LPFC_ASYNC_LINK_SPEED_100GBPS:
6705 			fc_host_speed(shost) = FC_PORTSPEED_100GBIT;
6706 			break;
6707 		default:
6708 			fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
6709 			break;
6710 		}
6711 	} else
6712 		fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
6713 
6714 	spin_unlock_irq(shost->host_lock);
6715 }
6716 
6717 /**
6718  * lpfc_get_host_fabric_name - Set the value of the scsi host fabric name
6719  * @shost: kernel scsi host pointer.
6720  **/
6721 static void
6722 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
6723 {
6724 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6725 	struct lpfc_hba   *phba = vport->phba;
6726 	u64 node_name;
6727 
6728 	spin_lock_irq(shost->host_lock);
6729 
6730 	if ((vport->port_state > LPFC_FLOGI) &&
6731 	    ((vport->fc_flag & FC_FABRIC) ||
6732 	     ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
6733 	      (vport->fc_flag & FC_PUBLIC_LOOP))))
6734 		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
6735 	else
6736 		/* fabric is local port if there is no F/FL_Port */
6737 		node_name = 0;
6738 
6739 	spin_unlock_irq(shost->host_lock);
6740 
6741 	fc_host_fabric_name(shost) = node_name;
6742 }
6743 
6744 /**
6745  * lpfc_get_stats - Return statistical information about the adapter
6746  * @shost: kernel scsi host pointer.
6747  *
6748  * Notes:
6749  * NULL on error for link down, no mbox pool, sli2 active,
6750  * management not allowed, memory allocation error, or mbox error.
6751  *
6752  * Returns:
6753  * NULL for error
6754  * address of the adapter host statistics
6755  **/
6756 static struct fc_host_statistics *
6757 lpfc_get_stats(struct Scsi_Host *shost)
6758 {
6759 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6760 	struct lpfc_hba   *phba = vport->phba;
6761 	struct lpfc_sli   *psli = &phba->sli;
6762 	struct fc_host_statistics *hs = &phba->link_stats;
6763 	struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
6764 	LPFC_MBOXQ_t *pmboxq;
6765 	MAILBOX_t *pmb;
6766 	int rc = 0;
6767 
6768 	/*
6769 	 * prevent udev from issuing mailbox commands until the port is
6770 	 * configured.
6771 	 */
6772 	if (phba->link_state < LPFC_LINK_DOWN ||
6773 	    !phba->mbox_mem_pool ||
6774 	    (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
6775 		return NULL;
6776 
6777 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
6778 		return NULL;
6779 
6780 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6781 	if (!pmboxq)
6782 		return NULL;
6783 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
6784 
6785 	pmb = &pmboxq->u.mb;
6786 	pmb->mbxCommand = MBX_READ_STATUS;
6787 	pmb->mbxOwner = OWN_HOST;
6788 	pmboxq->ctx_buf = NULL;
6789 	pmboxq->vport = vport;
6790 
6791 	if (vport->fc_flag & FC_OFFLINE_MODE)
6792 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
6793 	else
6794 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
6795 
6796 	if (rc != MBX_SUCCESS) {
6797 		if (rc != MBX_TIMEOUT)
6798 			mempool_free(pmboxq, phba->mbox_mem_pool);
6799 		return NULL;
6800 	}
6801 
6802 	memset(hs, 0, sizeof (struct fc_host_statistics));
6803 
6804 	hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
6805 	/*
6806 	 * The MBX_READ_STATUS returns tx_k_bytes which has to
6807 	 * converted to words
6808 	 */
6809 	hs->tx_words = (uint64_t)
6810 			((uint64_t)pmb->un.varRdStatus.xmitByteCnt
6811 			* (uint64_t)256);
6812 	hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
6813 	hs->rx_words = (uint64_t)
6814 			((uint64_t)pmb->un.varRdStatus.rcvByteCnt
6815 			 * (uint64_t)256);
6816 
6817 	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
6818 	pmb->mbxCommand = MBX_READ_LNK_STAT;
6819 	pmb->mbxOwner = OWN_HOST;
6820 	pmboxq->ctx_buf = NULL;
6821 	pmboxq->vport = vport;
6822 
6823 	if (vport->fc_flag & FC_OFFLINE_MODE)
6824 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
6825 	else
6826 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
6827 
6828 	if (rc != MBX_SUCCESS) {
6829 		if (rc != MBX_TIMEOUT)
6830 			mempool_free(pmboxq, phba->mbox_mem_pool);
6831 		return NULL;
6832 	}
6833 
6834 	hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
6835 	hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
6836 	hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
6837 	hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
6838 	hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
6839 	hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
6840 	hs->error_frames = pmb->un.varRdLnk.crcCnt;
6841 
6842 	hs->link_failure_count -= lso->link_failure_count;
6843 	hs->loss_of_sync_count -= lso->loss_of_sync_count;
6844 	hs->loss_of_signal_count -= lso->loss_of_signal_count;
6845 	hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
6846 	hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
6847 	hs->invalid_crc_count -= lso->invalid_crc_count;
6848 	hs->error_frames -= lso->error_frames;
6849 
6850 	if (phba->hba_flag & HBA_FCOE_MODE) {
6851 		hs->lip_count = -1;
6852 		hs->nos_count = (phba->link_events >> 1);
6853 		hs->nos_count -= lso->link_events;
6854 	} else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
6855 		hs->lip_count = (phba->fc_eventTag >> 1);
6856 		hs->lip_count -= lso->link_events;
6857 		hs->nos_count = -1;
6858 	} else {
6859 		hs->lip_count = -1;
6860 		hs->nos_count = (phba->fc_eventTag >> 1);
6861 		hs->nos_count -= lso->link_events;
6862 	}
6863 
6864 	hs->dumped_frames = -1;
6865 
6866 	hs->seconds_since_last_reset = ktime_get_seconds() - psli->stats_start;
6867 
6868 	mempool_free(pmboxq, phba->mbox_mem_pool);
6869 
6870 	return hs;
6871 }
6872 
6873 /**
6874  * lpfc_reset_stats - Copy the adapter link stats information
6875  * @shost: kernel scsi host pointer.
6876  **/
6877 static void
6878 lpfc_reset_stats(struct Scsi_Host *shost)
6879 {
6880 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6881 	struct lpfc_hba   *phba = vport->phba;
6882 	struct lpfc_sli   *psli = &phba->sli;
6883 	struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets;
6884 	LPFC_MBOXQ_t *pmboxq;
6885 	MAILBOX_t *pmb;
6886 	int rc = 0;
6887 
6888 	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
6889 		return;
6890 
6891 	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6892 	if (!pmboxq)
6893 		return;
6894 	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
6895 
6896 	pmb = &pmboxq->u.mb;
6897 	pmb->mbxCommand = MBX_READ_STATUS;
6898 	pmb->mbxOwner = OWN_HOST;
6899 	pmb->un.varWords[0] = 0x1; /* reset request */
6900 	pmboxq->ctx_buf = NULL;
6901 	pmboxq->vport = vport;
6902 
6903 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
6904 		(!(psli->sli_flag & LPFC_SLI_ACTIVE)))
6905 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
6906 	else
6907 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
6908 
6909 	if (rc != MBX_SUCCESS) {
6910 		if (rc != MBX_TIMEOUT)
6911 			mempool_free(pmboxq, phba->mbox_mem_pool);
6912 		return;
6913 	}
6914 
6915 	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
6916 	pmb->mbxCommand = MBX_READ_LNK_STAT;
6917 	pmb->mbxOwner = OWN_HOST;
6918 	pmboxq->ctx_buf = NULL;
6919 	pmboxq->vport = vport;
6920 
6921 	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
6922 	    (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
6923 		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
6924 	else
6925 		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
6926 
6927 	if (rc != MBX_SUCCESS) {
6928 		if (rc != MBX_TIMEOUT)
6929 			mempool_free( pmboxq, phba->mbox_mem_pool);
6930 		return;
6931 	}
6932 
6933 	lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
6934 	lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
6935 	lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
6936 	lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
6937 	lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
6938 	lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
6939 	lso->error_frames = pmb->un.varRdLnk.crcCnt;
6940 	if (phba->hba_flag & HBA_FCOE_MODE)
6941 		lso->link_events = (phba->link_events >> 1);
6942 	else
6943 		lso->link_events = (phba->fc_eventTag >> 1);
6944 
6945 	psli->stats_start = ktime_get_seconds();
6946 
6947 	mempool_free(pmboxq, phba->mbox_mem_pool);
6948 
6949 	return;
6950 }
6951 
6952 /*
6953  * The LPFC driver treats linkdown handling as target loss events so there
6954  * are no sysfs handlers for link_down_tmo.
6955  */
6956 
6957 /**
6958  * lpfc_get_node_by_target - Return the nodelist for a target
6959  * @starget: kernel scsi target pointer.
6960  *
6961  * Returns:
6962  * address of the node list if found
6963  * NULL target not found
6964  **/
6965 static struct lpfc_nodelist *
6966 lpfc_get_node_by_target(struct scsi_target *starget)
6967 {
6968 	struct Scsi_Host  *shost = dev_to_shost(starget->dev.parent);
6969 	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6970 	struct lpfc_nodelist *ndlp;
6971 
6972 	spin_lock_irq(shost->host_lock);
6973 	/* Search for this, mapped, target ID */
6974 	list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6975 		if (NLP_CHK_NODE_ACT(ndlp) &&
6976 		    ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
6977 		    starget->id == ndlp->nlp_sid) {
6978 			spin_unlock_irq(shost->host_lock);
6979 			return ndlp;
6980 		}
6981 	}
6982 	spin_unlock_irq(shost->host_lock);
6983 	return NULL;
6984 }
6985 
6986 /**
6987  * lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1
6988  * @starget: kernel scsi target pointer.
6989  **/
6990 static void
6991 lpfc_get_starget_port_id(struct scsi_target *starget)
6992 {
6993 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
6994 
6995 	fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1;
6996 }
6997 
6998 /**
6999  * lpfc_get_starget_node_name - Set the target node name
7000  * @starget: kernel scsi target pointer.
7001  *
7002  * Description: Set the target node name to the ndlp node name wwn or zero.
7003  **/
7004 static void
7005 lpfc_get_starget_node_name(struct scsi_target *starget)
7006 {
7007 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
7008 
7009 	fc_starget_node_name(starget) =
7010 		ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
7011 }
7012 
7013 /**
7014  * lpfc_get_starget_port_name - Set the target port name
7015  * @starget: kernel scsi target pointer.
7016  *
7017  * Description:  set the target port name to the ndlp port name wwn or zero.
7018  **/
7019 static void
7020 lpfc_get_starget_port_name(struct scsi_target *starget)
7021 {
7022 	struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
7023 
7024 	fc_starget_port_name(starget) =
7025 		ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
7026 }
7027 
7028 /**
7029  * lpfc_set_rport_loss_tmo - Set the rport dev loss tmo
7030  * @rport: fc rport address.
7031  * @timeout: new value for dev loss tmo.
7032  *
7033  * Description:
7034  * If timeout is non zero set the dev_loss_tmo to timeout, else set
7035  * dev_loss_tmo to one.
7036  **/
7037 static void
7038 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
7039 {
7040 	struct lpfc_rport_data *rdata = rport->dd_data;
7041 	struct lpfc_nodelist *ndlp = rdata->pnode;
7042 #if (IS_ENABLED(CONFIG_NVME_FC))
7043 	struct lpfc_nvme_rport *nrport = NULL;
7044 #endif
7045 
7046 	if (timeout)
7047 		rport->dev_loss_tmo = timeout;
7048 	else
7049 		rport->dev_loss_tmo = 1;
7050 
7051 	if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
7052 		dev_info(&rport->dev, "Cannot find remote node to "
7053 				      "set rport dev loss tmo, port_id x%x\n",
7054 				      rport->port_id);
7055 		return;
7056 	}
7057 
7058 #if (IS_ENABLED(CONFIG_NVME_FC))
7059 	nrport = lpfc_ndlp_get_nrport(ndlp);
7060 
7061 	if (nrport && nrport->remoteport)
7062 		nvme_fc_set_remoteport_devloss(nrport->remoteport,
7063 					       rport->dev_loss_tmo);
7064 #endif
7065 }
7066 
7067 /**
7068  * lpfc_rport_show_function - Return rport target information
7069  *
7070  * Description:
7071  * Macro that uses field to generate a function with the name lpfc_show_rport_
7072  *
7073  * lpfc_show_rport_##field: returns the bytes formatted in buf
7074  * @cdev: class converted to an fc_rport.
7075  * @buf: on return contains the target_field or zero.
7076  *
7077  * Returns: size of formatted string.
7078  **/
7079 #define lpfc_rport_show_function(field, format_string, sz, cast)	\
7080 static ssize_t								\
7081 lpfc_show_rport_##field (struct device *dev,				\
7082 			 struct device_attribute *attr,			\
7083 			 char *buf)					\
7084 {									\
7085 	struct fc_rport *rport = transport_class_to_rport(dev);		\
7086 	struct lpfc_rport_data *rdata = rport->hostdata;		\
7087 	return scnprintf(buf, sz, format_string,			\
7088 		(rdata->target) ? cast rdata->target->field : 0);	\
7089 }
7090 
7091 #define lpfc_rport_rd_attr(field, format_string, sz)			\
7092 	lpfc_rport_show_function(field, format_string, sz, )		\
7093 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)
7094 
7095 /**
7096  * lpfc_set_vport_symbolic_name - Set the vport's symbolic name
7097  * @fc_vport: The fc_vport who's symbolic name has been changed.
7098  *
7099  * Description:
7100  * This function is called by the transport after the @fc_vport's symbolic name
7101  * has been changed. This function re-registers the symbolic name with the
7102  * switch to propagate the change into the fabric if the vport is active.
7103  **/
7104 static void
7105 lpfc_set_vport_symbolic_name(struct fc_vport *fc_vport)
7106 {
7107 	struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
7108 
7109 	if (vport->port_state == LPFC_VPORT_READY)
7110 		lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
7111 }
7112 
7113 /**
7114  * lpfc_hba_log_verbose_init - Set hba's log verbose level
7115  * @phba: Pointer to lpfc_hba struct.
7116  *
7117  * This function is called by the lpfc_get_cfgparam() routine to set the
7118  * module lpfc_log_verbose into the @phba cfg_log_verbose for use with
7119  * log message according to the module's lpfc_log_verbose parameter setting
7120  * before hba port or vport created.
7121  **/
7122 static void
7123 lpfc_hba_log_verbose_init(struct lpfc_hba *phba, uint32_t verbose)
7124 {
7125 	phba->cfg_log_verbose = verbose;
7126 }
7127 
7128 struct fc_function_template lpfc_transport_functions = {
7129 	/* fixed attributes the driver supports */
7130 	.show_host_node_name = 1,
7131 	.show_host_port_name = 1,
7132 	.show_host_supported_classes = 1,
7133 	.show_host_supported_fc4s = 1,
7134 	.show_host_supported_speeds = 1,
7135 	.show_host_maxframe_size = 1,
7136 
7137 	.get_host_symbolic_name = lpfc_get_host_symbolic_name,
7138 	.show_host_symbolic_name = 1,
7139 
7140 	/* dynamic attributes the driver supports */
7141 	.get_host_port_id = lpfc_get_host_port_id,
7142 	.show_host_port_id = 1,
7143 
7144 	.get_host_port_type = lpfc_get_host_port_type,
7145 	.show_host_port_type = 1,
7146 
7147 	.get_host_port_state = lpfc_get_host_port_state,
7148 	.show_host_port_state = 1,
7149 
7150 	/* active_fc4s is shown but doesn't change (thus no get function) */
7151 	.show_host_active_fc4s = 1,
7152 
7153 	.get_host_speed = lpfc_get_host_speed,
7154 	.show_host_speed = 1,
7155 
7156 	.get_host_fabric_name = lpfc_get_host_fabric_name,
7157 	.show_host_fabric_name = 1,
7158 
7159 	/*
7160 	 * The LPFC driver treats linkdown handling as target loss events
7161 	 * so there are no sysfs handlers for link_down_tmo.
7162 	 */
7163 
7164 	.get_fc_host_stats = lpfc_get_stats,
7165 	.reset_fc_host_stats = lpfc_reset_stats,
7166 
7167 	.dd_fcrport_size = sizeof(struct lpfc_rport_data),
7168 	.show_rport_maxframe_size = 1,
7169 	.show_rport_supported_classes = 1,
7170 
7171 	.set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
7172 	.show_rport_dev_loss_tmo = 1,
7173 
7174 	.get_starget_port_id  = lpfc_get_starget_port_id,
7175 	.show_starget_port_id = 1,
7176 
7177 	.get_starget_node_name = lpfc_get_starget_node_name,
7178 	.show_starget_node_name = 1,
7179 
7180 	.get_starget_port_name = lpfc_get_starget_port_name,
7181 	.show_starget_port_name = 1,
7182 
7183 	.issue_fc_host_lip = lpfc_issue_lip,
7184 	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
7185 	.terminate_rport_io = lpfc_terminate_rport_io,
7186 
7187 	.dd_fcvport_size = sizeof(struct lpfc_vport *),
7188 
7189 	.vport_disable = lpfc_vport_disable,
7190 
7191 	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
7192 
7193 	.bsg_request = lpfc_bsg_request,
7194 	.bsg_timeout = lpfc_bsg_timeout,
7195 };
7196 
7197 struct fc_function_template lpfc_vport_transport_functions = {
7198 	/* fixed attributes the driver supports */
7199 	.show_host_node_name = 1,
7200 	.show_host_port_name = 1,
7201 	.show_host_supported_classes = 1,
7202 	.show_host_supported_fc4s = 1,
7203 	.show_host_supported_speeds = 1,
7204 	.show_host_maxframe_size = 1,
7205 
7206 	.get_host_symbolic_name = lpfc_get_host_symbolic_name,
7207 	.show_host_symbolic_name = 1,
7208 
7209 	/* dynamic attributes the driver supports */
7210 	.get_host_port_id = lpfc_get_host_port_id,
7211 	.show_host_port_id = 1,
7212 
7213 	.get_host_port_type = lpfc_get_host_port_type,
7214 	.show_host_port_type = 1,
7215 
7216 	.get_host_port_state = lpfc_get_host_port_state,
7217 	.show_host_port_state = 1,
7218 
7219 	/* active_fc4s is shown but doesn't change (thus no get function) */
7220 	.show_host_active_fc4s = 1,
7221 
7222 	.get_host_speed = lpfc_get_host_speed,
7223 	.show_host_speed = 1,
7224 
7225 	.get_host_fabric_name = lpfc_get_host_fabric_name,
7226 	.show_host_fabric_name = 1,
7227 
7228 	/*
7229 	 * The LPFC driver treats linkdown handling as target loss events
7230 	 * so there are no sysfs handlers for link_down_tmo.
7231 	 */
7232 
7233 	.get_fc_host_stats = lpfc_get_stats,
7234 	.reset_fc_host_stats = lpfc_reset_stats,
7235 
7236 	.dd_fcrport_size = sizeof(struct lpfc_rport_data),
7237 	.show_rport_maxframe_size = 1,
7238 	.show_rport_supported_classes = 1,
7239 
7240 	.set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
7241 	.show_rport_dev_loss_tmo = 1,
7242 
7243 	.get_starget_port_id  = lpfc_get_starget_port_id,
7244 	.show_starget_port_id = 1,
7245 
7246 	.get_starget_node_name = lpfc_get_starget_node_name,
7247 	.show_starget_node_name = 1,
7248 
7249 	.get_starget_port_name = lpfc_get_starget_port_name,
7250 	.show_starget_port_name = 1,
7251 
7252 	.dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
7253 	.terminate_rport_io = lpfc_terminate_rport_io,
7254 
7255 	.vport_disable = lpfc_vport_disable,
7256 
7257 	.set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
7258 };
7259 
7260 /**
7261  * lpfc_get_hba_function_mode - Used to determine the HBA function in FCoE
7262  * Mode
7263  * @phba: lpfc_hba pointer.
7264  **/
7265 static void
7266 lpfc_get_hba_function_mode(struct lpfc_hba *phba)
7267 {
7268 	/* If the adapter supports FCoE mode */
7269 	switch (phba->pcidev->device) {
7270 	case PCI_DEVICE_ID_SKYHAWK:
7271 	case PCI_DEVICE_ID_SKYHAWK_VF:
7272 	case PCI_DEVICE_ID_LANCER_FCOE:
7273 	case PCI_DEVICE_ID_LANCER_FCOE_VF:
7274 	case PCI_DEVICE_ID_ZEPHYR_DCSP:
7275 	case PCI_DEVICE_ID_HORNET:
7276 	case PCI_DEVICE_ID_TIGERSHARK:
7277 	case PCI_DEVICE_ID_TOMCAT:
7278 		phba->hba_flag |= HBA_FCOE_MODE;
7279 		break;
7280 	default:
7281 	/* for others, clear the flag */
7282 		phba->hba_flag &= ~HBA_FCOE_MODE;
7283 	}
7284 }
7285 
7286 /**
7287  * lpfc_get_cfgparam - Used during probe_one to init the adapter structure
7288  * @phba: lpfc_hba pointer.
7289  **/
7290 void
7291 lpfc_get_cfgparam(struct lpfc_hba *phba)
7292 {
7293 	lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);
7294 	lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched);
7295 	lpfc_ns_query_init(phba, lpfc_ns_query);
7296 	lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset);
7297 	lpfc_cr_delay_init(phba, lpfc_cr_delay);
7298 	lpfc_cr_count_init(phba, lpfc_cr_count);
7299 	lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
7300 	lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
7301 	lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
7302 	lpfc_ack0_init(phba, lpfc_ack0);
7303 	lpfc_xri_rebalancing_init(phba, lpfc_xri_rebalancing);
7304 	lpfc_topology_init(phba, lpfc_topology);
7305 	lpfc_link_speed_init(phba, lpfc_link_speed);
7306 	lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
7307 	lpfc_task_mgmt_tmo_init(phba, lpfc_task_mgmt_tmo);
7308 	lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
7309 	lpfc_fcf_failover_policy_init(phba, lpfc_fcf_failover_policy);
7310 	lpfc_enable_rrq_init(phba, lpfc_enable_rrq);
7311 	lpfc_fdmi_on_init(phba, lpfc_fdmi_on);
7312 	lpfc_enable_SmartSAN_init(phba, lpfc_enable_SmartSAN);
7313 	lpfc_use_msi_init(phba, lpfc_use_msi);
7314 	lpfc_nvme_oas_init(phba, lpfc_nvme_oas);
7315 	lpfc_nvme_embed_cmd_init(phba, lpfc_nvme_embed_cmd);
7316 	lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
7317 	lpfc_force_rscn_init(phba, lpfc_force_rscn);
7318 	lpfc_cq_poll_threshold_init(phba, lpfc_cq_poll_threshold);
7319 	lpfc_cq_max_proc_limit_init(phba, lpfc_cq_max_proc_limit);
7320 	lpfc_fcp_cpu_map_init(phba, lpfc_fcp_cpu_map);
7321 	lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
7322 	lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
7323 
7324 	lpfc_EnableXLane_init(phba, lpfc_EnableXLane);
7325 	if (phba->sli_rev != LPFC_SLI_REV4)
7326 		phba->cfg_EnableXLane = 0;
7327 	lpfc_XLanePriority_init(phba, lpfc_XLanePriority);
7328 
7329 	memset(phba->cfg_oas_tgt_wwpn, 0, (8 * sizeof(uint8_t)));
7330 	memset(phba->cfg_oas_vpt_wwpn, 0, (8 * sizeof(uint8_t)));
7331 	phba->cfg_oas_lun_state = 0;
7332 	phba->cfg_oas_lun_status = 0;
7333 	phba->cfg_oas_flags = 0;
7334 	phba->cfg_oas_priority = 0;
7335 	lpfc_enable_bg_init(phba, lpfc_enable_bg);
7336 	lpfc_prot_mask_init(phba, lpfc_prot_mask);
7337 	lpfc_prot_guard_init(phba, lpfc_prot_guard);
7338 	if (phba->sli_rev == LPFC_SLI_REV4)
7339 		phba->cfg_poll = 0;
7340 	else
7341 		phba->cfg_poll = lpfc_poll;
7342 
7343 	/* Get the function mode */
7344 	lpfc_get_hba_function_mode(phba);
7345 
7346 	/* BlockGuard allowed for FC only. */
7347 	if (phba->cfg_enable_bg && phba->hba_flag & HBA_FCOE_MODE) {
7348 		lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7349 				"0581 BlockGuard feature not supported\n");
7350 		/* If set, clear the BlockGuard support param */
7351 		phba->cfg_enable_bg = 0;
7352 	} else if (phba->cfg_enable_bg) {
7353 		phba->sli3_options |= LPFC_SLI3_BG_ENABLED;
7354 	}
7355 
7356 	lpfc_suppress_rsp_init(phba, lpfc_suppress_rsp);
7357 
7358 	lpfc_enable_fc4_type_init(phba, lpfc_enable_fc4_type);
7359 	lpfc_nvmet_mrq_init(phba, lpfc_nvmet_mrq);
7360 	lpfc_nvmet_mrq_post_init(phba, lpfc_nvmet_mrq_post);
7361 
7362 	/* Initialize first burst. Target vs Initiator are different. */
7363 	lpfc_nvme_enable_fb_init(phba, lpfc_nvme_enable_fb);
7364 	lpfc_nvmet_fb_size_init(phba, lpfc_nvmet_fb_size);
7365 	lpfc_fcp_mq_threshold_init(phba, lpfc_fcp_mq_threshold);
7366 	lpfc_hdw_queue_init(phba, lpfc_hdw_queue);
7367 	lpfc_irq_chann_init(phba, lpfc_irq_chann);
7368 	lpfc_enable_bbcr_init(phba, lpfc_enable_bbcr);
7369 	lpfc_enable_dpp_init(phba, lpfc_enable_dpp);
7370 
7371 	if (phba->sli_rev != LPFC_SLI_REV4) {
7372 		/* NVME only supported on SLI4 */
7373 		phba->nvmet_support = 0;
7374 		phba->cfg_nvmet_mrq = 0;
7375 		phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
7376 		phba->cfg_enable_bbcr = 0;
7377 		phba->cfg_xri_rebalancing = 0;
7378 	} else {
7379 		/* We MUST have FCP support */
7380 		if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
7381 			phba->cfg_enable_fc4_type |= LPFC_ENABLE_FCP;
7382 	}
7383 
7384 	phba->cfg_auto_imax = (phba->cfg_fcp_imax) ? 0 : 1;
7385 
7386 	phba->cfg_enable_pbde = 0;
7387 
7388 	/* A value of 0 means use the number of CPUs found in the system */
7389 	if (phba->cfg_hdw_queue == 0)
7390 		phba->cfg_hdw_queue = phba->sli4_hba.num_present_cpu;
7391 	if (phba->cfg_irq_chann == 0)
7392 		phba->cfg_irq_chann = phba->sli4_hba.num_present_cpu;
7393 	if (phba->cfg_irq_chann > phba->cfg_hdw_queue)
7394 		phba->cfg_irq_chann = phba->cfg_hdw_queue;
7395 
7396 	phba->cfg_soft_wwnn = 0L;
7397 	phba->cfg_soft_wwpn = 0L;
7398 	lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
7399 	lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
7400 	lpfc_aer_support_init(phba, lpfc_aer_support);
7401 	lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn);
7402 	lpfc_request_firmware_upgrade_init(phba, lpfc_req_fw_upgrade);
7403 	lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
7404 	lpfc_delay_discovery_init(phba, lpfc_delay_discovery);
7405 	lpfc_sli_mode_init(phba, lpfc_sli_mode);
7406 	phba->cfg_enable_dss = 1;
7407 	lpfc_enable_mds_diags_init(phba, lpfc_enable_mds_diags);
7408 	lpfc_ras_fwlog_buffsize_init(phba, lpfc_ras_fwlog_buffsize);
7409 	lpfc_ras_fwlog_level_init(phba, lpfc_ras_fwlog_level);
7410 	lpfc_ras_fwlog_func_init(phba, lpfc_ras_fwlog_func);
7411 
7412 	return;
7413 }
7414 
7415 /**
7416  * lpfc_nvme_mod_param_dep - Adjust module parameter value based on
7417  * dependencies between protocols and roles.
7418  * @phba: lpfc_hba pointer.
7419  **/
7420 void
7421 lpfc_nvme_mod_param_dep(struct lpfc_hba *phba)
7422 {
7423 	if (phba->cfg_hdw_queue > phba->sli4_hba.num_present_cpu)
7424 		phba->cfg_hdw_queue = phba->sli4_hba.num_present_cpu;
7425 	if (phba->cfg_irq_chann > phba->sli4_hba.num_present_cpu)
7426 		phba->cfg_irq_chann = phba->sli4_hba.num_present_cpu;
7427 	if (phba->cfg_irq_chann > phba->cfg_hdw_queue)
7428 		phba->cfg_irq_chann = phba->cfg_hdw_queue;
7429 
7430 	if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
7431 	    phba->nvmet_support) {
7432 		phba->cfg_enable_fc4_type &= ~LPFC_ENABLE_FCP;
7433 
7434 		lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
7435 				"6013 %s x%x fb_size x%x, fb_max x%x\n",
7436 				"NVME Target PRLI ACC enable_fb ",
7437 				phba->cfg_nvme_enable_fb,
7438 				phba->cfg_nvmet_fb_size,
7439 				LPFC_NVMET_FB_SZ_MAX);
7440 
7441 		if (phba->cfg_nvme_enable_fb == 0)
7442 			phba->cfg_nvmet_fb_size = 0;
7443 		else {
7444 			if (phba->cfg_nvmet_fb_size > LPFC_NVMET_FB_SZ_MAX)
7445 				phba->cfg_nvmet_fb_size = LPFC_NVMET_FB_SZ_MAX;
7446 		}
7447 
7448 		if (!phba->cfg_nvmet_mrq)
7449 			phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
7450 
7451 		/* Adjust lpfc_nvmet_mrq to avoid running out of WQE slots */
7452 		if (phba->cfg_nvmet_mrq > phba->cfg_hdw_queue) {
7453 			phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
7454 			lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
7455 					"6018 Adjust lpfc_nvmet_mrq to %d\n",
7456 					phba->cfg_nvmet_mrq);
7457 		}
7458 		if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
7459 			phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
7460 
7461 	} else {
7462 		/* Not NVME Target mode.  Turn off Target parameters. */
7463 		phba->nvmet_support = 0;
7464 		phba->cfg_nvmet_mrq = 0;
7465 		phba->cfg_nvmet_fb_size = 0;
7466 	}
7467 }
7468 
7469 /**
7470  * lpfc_get_vport_cfgparam - Used during port create, init the vport structure
7471  * @vport: lpfc_vport pointer.
7472  **/
7473 void
7474 lpfc_get_vport_cfgparam(struct lpfc_vport *vport)
7475 {
7476 	lpfc_log_verbose_init(vport, lpfc_log_verbose);
7477 	lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth);
7478 	lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth);
7479 	lpfc_devloss_tmo_init(vport, lpfc_devloss_tmo);
7480 	lpfc_nodev_tmo_init(vport, lpfc_nodev_tmo);
7481 	lpfc_peer_port_login_init(vport, lpfc_peer_port_login);
7482 	lpfc_restrict_login_init(vport, lpfc_restrict_login);
7483 	lpfc_fcp_class_init(vport, lpfc_fcp_class);
7484 	lpfc_use_adisc_init(vport, lpfc_use_adisc);
7485 	lpfc_first_burst_size_init(vport, lpfc_first_burst_size);
7486 	lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time);
7487 	lpfc_discovery_threads_init(vport, lpfc_discovery_threads);
7488 	lpfc_max_luns_init(vport, lpfc_max_luns);
7489 	lpfc_scan_down_init(vport, lpfc_scan_down);
7490 	lpfc_enable_da_id_init(vport, lpfc_enable_da_id);
7491 	return;
7492 }
7493