1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2017-2021 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 "lpfc_hw4.h"
41 #include "lpfc_hw.h"
42 #include "lpfc_sli.h"
43 #include "lpfc_sli4.h"
44 #include "lpfc_nl.h"
45 #include "lpfc_disc.h"
46 #include "lpfc.h"
47 #include "lpfc_scsi.h"
48 #include "lpfc_nvme.h"
49 #include "lpfc_logmsg.h"
50 #include "lpfc_version.h"
51 #include "lpfc_compat.h"
52 #include "lpfc_crtn.h"
53 #include "lpfc_vport.h"
54 #include "lpfc_attr.h"
55
56 #define LPFC_DEF_DEVLOSS_TMO 30
57 #define LPFC_MIN_DEVLOSS_TMO 1
58 #define LPFC_MAX_DEVLOSS_TMO 255
59
60 /*
61 * Write key size should be multiple of 4. If write key is changed
62 * make sure that library write key is also changed.
63 */
64 #define LPFC_REG_WRITE_KEY_SIZE 4
65 #define LPFC_REG_WRITE_KEY "EMLX"
66
67 const char *const trunk_errmsg[] = { /* map errcode */
68 "", /* There is no such error code at index 0*/
69 "link negotiated speed does not match existing"
70 " trunk - link was \"low\" speed",
71 "link negotiated speed does not match"
72 " existing trunk - link was \"middle\" speed",
73 "link negotiated speed does not match existing"
74 " trunk - link was \"high\" speed",
75 "Attached to non-trunking port - F_Port",
76 "Attached to non-trunking port - N_Port",
77 "FLOGI response timeout",
78 "non-FLOGI frame received",
79 "Invalid FLOGI response",
80 "Trunking initialization protocol",
81 "Trunk peer device mismatch",
82 };
83
84 /**
85 * lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules
86 * @incr: integer to convert.
87 * @hdw: ascii string holding converted integer plus a string terminator.
88 *
89 * Description:
90 * JEDEC Joint Electron Device Engineering Council.
91 * Convert a 32 bit integer composed of 8 nibbles into an 8 byte ascii
92 * character string. The string is then terminated with a NULL in byte 9.
93 * Hex 0-9 becomes ascii '0' to '9'.
94 * Hex a-f becomes ascii '=' to 'B' capital B.
95 *
96 * Notes:
97 * Coded for 32 bit integers only.
98 **/
99 static void
lpfc_jedec_to_ascii(int incr,char hdw[])100 lpfc_jedec_to_ascii(int incr, char hdw[])
101 {
102 int i, j;
103 for (i = 0; i < 8; i++) {
104 j = (incr & 0xf);
105 if (j <= 9)
106 hdw[7 - i] = 0x30 + j;
107 else
108 hdw[7 - i] = 0x61 + j - 10;
109 incr = (incr >> 4);
110 }
111 hdw[8] = 0;
112 return;
113 }
114
115 /**
116 * lpfc_drvr_version_show - Return the Emulex driver string with version number
117 * @dev: class unused variable.
118 * @attr: device attribute, not used.
119 * @buf: on return contains the module description text.
120 *
121 * Returns: size of formatted string.
122 **/
123 static ssize_t
lpfc_drvr_version_show(struct device * dev,struct device_attribute * attr,char * buf)124 lpfc_drvr_version_show(struct device *dev, struct device_attribute *attr,
125 char *buf)
126 {
127 return scnprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
128 }
129
130 /**
131 * lpfc_enable_fip_show - Return the fip mode of the HBA
132 * @dev: class unused variable.
133 * @attr: device attribute, not used.
134 * @buf: on return contains the module description text.
135 *
136 * Returns: size of formatted string.
137 **/
138 static ssize_t
lpfc_enable_fip_show(struct device * dev,struct device_attribute * attr,char * buf)139 lpfc_enable_fip_show(struct device *dev, struct device_attribute *attr,
140 char *buf)
141 {
142 struct Scsi_Host *shost = class_to_shost(dev);
143 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
144 struct lpfc_hba *phba = vport->phba;
145
146 if (phba->hba_flag & HBA_FIP_SUPPORT)
147 return scnprintf(buf, PAGE_SIZE, "1\n");
148 else
149 return scnprintf(buf, PAGE_SIZE, "0\n");
150 }
151
152 static ssize_t
lpfc_nvme_info_show(struct device * dev,struct device_attribute * attr,char * buf)153 lpfc_nvme_info_show(struct device *dev, struct device_attribute *attr,
154 char *buf)
155 {
156 struct Scsi_Host *shost = class_to_shost(dev);
157 struct lpfc_vport *vport = shost_priv(shost);
158 struct lpfc_hba *phba = vport->phba;
159 struct lpfc_nvmet_tgtport *tgtp;
160 struct nvme_fc_local_port *localport;
161 struct lpfc_nvme_lport *lport;
162 struct lpfc_nvme_rport *rport;
163 struct lpfc_nodelist *ndlp;
164 struct nvme_fc_remote_port *nrport;
165 struct lpfc_fc4_ctrl_stat *cstat;
166 uint64_t data1, data2, data3;
167 uint64_t totin, totout, tot;
168 char *statep;
169 int i;
170 int len = 0;
171 char tmp[LPFC_MAX_NVME_INFO_TMP_LEN] = {0};
172
173 if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) {
174 len = scnprintf(buf, PAGE_SIZE, "NVME Disabled\n");
175 return len;
176 }
177 if (phba->nvmet_support) {
178 if (!phba->targetport) {
179 len = scnprintf(buf, PAGE_SIZE,
180 "NVME Target: x%llx is not allocated\n",
181 wwn_to_u64(vport->fc_portname.u.wwn));
182 return len;
183 }
184 /* Port state is only one of two values for now. */
185 if (phba->targetport->port_id)
186 statep = "REGISTERED";
187 else
188 statep = "INIT";
189 scnprintf(tmp, sizeof(tmp),
190 "NVME Target Enabled State %s\n",
191 statep);
192 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
193 goto buffer_done;
194
195 scnprintf(tmp, sizeof(tmp),
196 "%s%d WWPN x%llx WWNN x%llx DID x%06x\n",
197 "NVME Target: lpfc",
198 phba->brd_no,
199 wwn_to_u64(vport->fc_portname.u.wwn),
200 wwn_to_u64(vport->fc_nodename.u.wwn),
201 phba->targetport->port_id);
202 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
203 goto buffer_done;
204
205 if (strlcat(buf, "\nNVME Target: Statistics\n", PAGE_SIZE)
206 >= PAGE_SIZE)
207 goto buffer_done;
208
209 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
210 scnprintf(tmp, sizeof(tmp),
211 "LS: Rcv %08x Drop %08x Abort %08x\n",
212 atomic_read(&tgtp->rcv_ls_req_in),
213 atomic_read(&tgtp->rcv_ls_req_drop),
214 atomic_read(&tgtp->xmt_ls_abort));
215 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
216 goto buffer_done;
217
218 if (atomic_read(&tgtp->rcv_ls_req_in) !=
219 atomic_read(&tgtp->rcv_ls_req_out)) {
220 scnprintf(tmp, sizeof(tmp),
221 "Rcv LS: in %08x != out %08x\n",
222 atomic_read(&tgtp->rcv_ls_req_in),
223 atomic_read(&tgtp->rcv_ls_req_out));
224 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
225 goto buffer_done;
226 }
227
228 scnprintf(tmp, sizeof(tmp),
229 "LS: Xmt %08x Drop %08x Cmpl %08x\n",
230 atomic_read(&tgtp->xmt_ls_rsp),
231 atomic_read(&tgtp->xmt_ls_drop),
232 atomic_read(&tgtp->xmt_ls_rsp_cmpl));
233 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
234 goto buffer_done;
235
236 scnprintf(tmp, sizeof(tmp),
237 "LS: RSP Abort %08x xb %08x Err %08x\n",
238 atomic_read(&tgtp->xmt_ls_rsp_aborted),
239 atomic_read(&tgtp->xmt_ls_rsp_xb_set),
240 atomic_read(&tgtp->xmt_ls_rsp_error));
241 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
242 goto buffer_done;
243
244 scnprintf(tmp, sizeof(tmp),
245 "FCP: Rcv %08x Defer %08x Release %08x "
246 "Drop %08x\n",
247 atomic_read(&tgtp->rcv_fcp_cmd_in),
248 atomic_read(&tgtp->rcv_fcp_cmd_defer),
249 atomic_read(&tgtp->xmt_fcp_release),
250 atomic_read(&tgtp->rcv_fcp_cmd_drop));
251 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
252 goto buffer_done;
253
254 if (atomic_read(&tgtp->rcv_fcp_cmd_in) !=
255 atomic_read(&tgtp->rcv_fcp_cmd_out)) {
256 scnprintf(tmp, sizeof(tmp),
257 "Rcv FCP: in %08x != out %08x\n",
258 atomic_read(&tgtp->rcv_fcp_cmd_in),
259 atomic_read(&tgtp->rcv_fcp_cmd_out));
260 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
261 goto buffer_done;
262 }
263
264 scnprintf(tmp, sizeof(tmp),
265 "FCP Rsp: RD %08x rsp %08x WR %08x rsp %08x "
266 "drop %08x\n",
267 atomic_read(&tgtp->xmt_fcp_read),
268 atomic_read(&tgtp->xmt_fcp_read_rsp),
269 atomic_read(&tgtp->xmt_fcp_write),
270 atomic_read(&tgtp->xmt_fcp_rsp),
271 atomic_read(&tgtp->xmt_fcp_drop));
272 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
273 goto buffer_done;
274
275 scnprintf(tmp, sizeof(tmp),
276 "FCP Rsp Cmpl: %08x err %08x drop %08x\n",
277 atomic_read(&tgtp->xmt_fcp_rsp_cmpl),
278 atomic_read(&tgtp->xmt_fcp_rsp_error),
279 atomic_read(&tgtp->xmt_fcp_rsp_drop));
280 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
281 goto buffer_done;
282
283 scnprintf(tmp, sizeof(tmp),
284 "FCP Rsp Abort: %08x xb %08x xricqe %08x\n",
285 atomic_read(&tgtp->xmt_fcp_rsp_aborted),
286 atomic_read(&tgtp->xmt_fcp_rsp_xb_set),
287 atomic_read(&tgtp->xmt_fcp_xri_abort_cqe));
288 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
289 goto buffer_done;
290
291 scnprintf(tmp, sizeof(tmp),
292 "ABORT: Xmt %08x Cmpl %08x\n",
293 atomic_read(&tgtp->xmt_fcp_abort),
294 atomic_read(&tgtp->xmt_fcp_abort_cmpl));
295 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
296 goto buffer_done;
297
298 scnprintf(tmp, sizeof(tmp),
299 "ABORT: Sol %08x Usol %08x Err %08x Cmpl %08x\n",
300 atomic_read(&tgtp->xmt_abort_sol),
301 atomic_read(&tgtp->xmt_abort_unsol),
302 atomic_read(&tgtp->xmt_abort_rsp),
303 atomic_read(&tgtp->xmt_abort_rsp_error));
304 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
305 goto buffer_done;
306
307 scnprintf(tmp, sizeof(tmp),
308 "DELAY: ctx %08x fod %08x wqfull %08x\n",
309 atomic_read(&tgtp->defer_ctx),
310 atomic_read(&tgtp->defer_fod),
311 atomic_read(&tgtp->defer_wqfull));
312 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
313 goto buffer_done;
314
315 /* Calculate outstanding IOs */
316 tot = atomic_read(&tgtp->rcv_fcp_cmd_drop);
317 tot += atomic_read(&tgtp->xmt_fcp_release);
318 tot = atomic_read(&tgtp->rcv_fcp_cmd_in) - tot;
319
320 scnprintf(tmp, sizeof(tmp),
321 "IO_CTX: %08x WAIT: cur %08x tot %08x\n"
322 "CTX Outstanding %08llx\n\n",
323 phba->sli4_hba.nvmet_xri_cnt,
324 phba->sli4_hba.nvmet_io_wait_cnt,
325 phba->sli4_hba.nvmet_io_wait_total,
326 tot);
327 strlcat(buf, tmp, PAGE_SIZE);
328 goto buffer_done;
329 }
330
331 localport = vport->localport;
332 if (!localport) {
333 len = scnprintf(buf, PAGE_SIZE,
334 "NVME Initiator x%llx is not allocated\n",
335 wwn_to_u64(vport->fc_portname.u.wwn));
336 return len;
337 }
338 lport = (struct lpfc_nvme_lport *)localport->private;
339 if (strlcat(buf, "\nNVME Initiator Enabled\n", PAGE_SIZE) >= PAGE_SIZE)
340 goto buffer_done;
341
342 scnprintf(tmp, sizeof(tmp),
343 "XRI Dist lpfc%d Total %d IO %d ELS %d\n",
344 phba->brd_no,
345 phba->sli4_hba.max_cfg_param.max_xri,
346 phba->sli4_hba.io_xri_max,
347 lpfc_sli4_get_els_iocb_cnt(phba));
348 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
349 goto buffer_done;
350
351 /* Port state is only one of two values for now. */
352 if (localport->port_id)
353 statep = "ONLINE";
354 else
355 statep = "UNKNOWN ";
356
357 scnprintf(tmp, sizeof(tmp),
358 "%s%d WWPN x%llx WWNN x%llx DID x%06x %s\n",
359 "NVME LPORT lpfc",
360 phba->brd_no,
361 wwn_to_u64(vport->fc_portname.u.wwn),
362 wwn_to_u64(vport->fc_nodename.u.wwn),
363 localport->port_id, statep);
364 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
365 goto buffer_done;
366
367 spin_lock_irq(shost->host_lock);
368
369 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
370 nrport = NULL;
371 spin_lock(&ndlp->lock);
372 rport = lpfc_ndlp_get_nrport(ndlp);
373 if (rport)
374 nrport = rport->remoteport;
375 spin_unlock(&ndlp->lock);
376 if (!nrport)
377 continue;
378
379 /* Port state is only one of two values for now. */
380 switch (nrport->port_state) {
381 case FC_OBJSTATE_ONLINE:
382 statep = "ONLINE";
383 break;
384 case FC_OBJSTATE_UNKNOWN:
385 statep = "UNKNOWN ";
386 break;
387 default:
388 statep = "UNSUPPORTED";
389 break;
390 }
391
392 /* Tab in to show lport ownership. */
393 if (strlcat(buf, "NVME RPORT ", PAGE_SIZE) >= PAGE_SIZE)
394 goto unlock_buf_done;
395 if (phba->brd_no >= 10) {
396 if (strlcat(buf, " ", PAGE_SIZE) >= PAGE_SIZE)
397 goto unlock_buf_done;
398 }
399
400 scnprintf(tmp, sizeof(tmp), "WWPN x%llx ",
401 nrport->port_name);
402 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
403 goto unlock_buf_done;
404
405 scnprintf(tmp, sizeof(tmp), "WWNN x%llx ",
406 nrport->node_name);
407 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
408 goto unlock_buf_done;
409
410 scnprintf(tmp, sizeof(tmp), "DID x%06x ",
411 nrport->port_id);
412 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
413 goto unlock_buf_done;
414
415 /* An NVME rport can have multiple roles. */
416 if (nrport->port_role & FC_PORT_ROLE_NVME_INITIATOR) {
417 if (strlcat(buf, "INITIATOR ", PAGE_SIZE) >= PAGE_SIZE)
418 goto unlock_buf_done;
419 }
420 if (nrport->port_role & FC_PORT_ROLE_NVME_TARGET) {
421 if (strlcat(buf, "TARGET ", PAGE_SIZE) >= PAGE_SIZE)
422 goto unlock_buf_done;
423 }
424 if (nrport->port_role & FC_PORT_ROLE_NVME_DISCOVERY) {
425 if (strlcat(buf, "DISCSRVC ", PAGE_SIZE) >= PAGE_SIZE)
426 goto unlock_buf_done;
427 }
428 if (nrport->port_role & ~(FC_PORT_ROLE_NVME_INITIATOR |
429 FC_PORT_ROLE_NVME_TARGET |
430 FC_PORT_ROLE_NVME_DISCOVERY)) {
431 scnprintf(tmp, sizeof(tmp), "UNKNOWN ROLE x%x",
432 nrport->port_role);
433 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
434 goto unlock_buf_done;
435 }
436
437 scnprintf(tmp, sizeof(tmp), "%s\n", statep);
438 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
439 goto unlock_buf_done;
440 }
441 spin_unlock_irq(shost->host_lock);
442
443 if (!lport)
444 goto buffer_done;
445
446 if (strlcat(buf, "\nNVME Statistics\n", PAGE_SIZE) >= PAGE_SIZE)
447 goto buffer_done;
448
449 scnprintf(tmp, sizeof(tmp),
450 "LS: Xmt %010x Cmpl %010x Abort %08x\n",
451 atomic_read(&lport->fc4NvmeLsRequests),
452 atomic_read(&lport->fc4NvmeLsCmpls),
453 atomic_read(&lport->xmt_ls_abort));
454 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
455 goto buffer_done;
456
457 scnprintf(tmp, sizeof(tmp),
458 "LS XMIT: Err %08x CMPL: xb %08x Err %08x\n",
459 atomic_read(&lport->xmt_ls_err),
460 atomic_read(&lport->cmpl_ls_xb),
461 atomic_read(&lport->cmpl_ls_err));
462 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
463 goto buffer_done;
464
465 totin = 0;
466 totout = 0;
467 for (i = 0; i < phba->cfg_hdw_queue; i++) {
468 cstat = &phba->sli4_hba.hdwq[i].nvme_cstat;
469 tot = cstat->io_cmpls;
470 totin += tot;
471 data1 = cstat->input_requests;
472 data2 = cstat->output_requests;
473 data3 = cstat->control_requests;
474 totout += (data1 + data2 + data3);
475 }
476 scnprintf(tmp, sizeof(tmp),
477 "Total FCP Cmpl %016llx Issue %016llx "
478 "OutIO %016llx\n",
479 totin, totout, totout - totin);
480 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
481 goto buffer_done;
482
483 scnprintf(tmp, sizeof(tmp),
484 "\tabort %08x noxri %08x nondlp %08x qdepth %08x "
485 "wqerr %08x err %08x\n",
486 atomic_read(&lport->xmt_fcp_abort),
487 atomic_read(&lport->xmt_fcp_noxri),
488 atomic_read(&lport->xmt_fcp_bad_ndlp),
489 atomic_read(&lport->xmt_fcp_qdepth),
490 atomic_read(&lport->xmt_fcp_wqerr),
491 atomic_read(&lport->xmt_fcp_err));
492 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
493 goto buffer_done;
494
495 scnprintf(tmp, sizeof(tmp),
496 "FCP CMPL: xb %08x Err %08x\n",
497 atomic_read(&lport->cmpl_fcp_xb),
498 atomic_read(&lport->cmpl_fcp_err));
499 strlcat(buf, tmp, PAGE_SIZE);
500
501 /* host_lock is already unlocked. */
502 goto buffer_done;
503
504 unlock_buf_done:
505 spin_unlock_irq(shost->host_lock);
506
507 buffer_done:
508 len = strnlen(buf, PAGE_SIZE);
509
510 if (unlikely(len >= (PAGE_SIZE - 1))) {
511 lpfc_printf_log(phba, KERN_INFO, LOG_NVME,
512 "6314 Catching potential buffer "
513 "overflow > PAGE_SIZE = %lu bytes\n",
514 PAGE_SIZE);
515 strlcpy(buf + PAGE_SIZE - 1 - sizeof(LPFC_NVME_INFO_MORE_STR),
516 LPFC_NVME_INFO_MORE_STR,
517 sizeof(LPFC_NVME_INFO_MORE_STR) + 1);
518 }
519
520 return len;
521 }
522
523 static ssize_t
lpfc_scsi_stat_show(struct device * dev,struct device_attribute * attr,char * buf)524 lpfc_scsi_stat_show(struct device *dev, struct device_attribute *attr,
525 char *buf)
526 {
527 struct Scsi_Host *shost = class_to_shost(dev);
528 struct lpfc_vport *vport = shost_priv(shost);
529 struct lpfc_hba *phba = vport->phba;
530 int len;
531 struct lpfc_fc4_ctrl_stat *cstat;
532 u64 data1, data2, data3;
533 u64 tot, totin, totout;
534 int i;
535 char tmp[LPFC_MAX_SCSI_INFO_TMP_LEN] = {0};
536
537 if (!(vport->cfg_enable_fc4_type & LPFC_ENABLE_FCP) ||
538 (phba->sli_rev != LPFC_SLI_REV4))
539 return 0;
540
541 scnprintf(buf, PAGE_SIZE, "SCSI HDWQ Statistics\n");
542
543 totin = 0;
544 totout = 0;
545 for (i = 0; i < phba->cfg_hdw_queue; i++) {
546 cstat = &phba->sli4_hba.hdwq[i].scsi_cstat;
547 tot = cstat->io_cmpls;
548 totin += tot;
549 data1 = cstat->input_requests;
550 data2 = cstat->output_requests;
551 data3 = cstat->control_requests;
552 totout += (data1 + data2 + data3);
553
554 scnprintf(tmp, sizeof(tmp), "HDWQ (%d): Rd %016llx Wr %016llx "
555 "IO %016llx ", i, data1, data2, data3);
556 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
557 goto buffer_done;
558
559 scnprintf(tmp, sizeof(tmp), "Cmpl %016llx OutIO %016llx\n",
560 tot, ((data1 + data2 + data3) - tot));
561 if (strlcat(buf, tmp, PAGE_SIZE) >= PAGE_SIZE)
562 goto buffer_done;
563 }
564 scnprintf(tmp, sizeof(tmp), "Total FCP Cmpl %016llx Issue %016llx "
565 "OutIO %016llx\n", totin, totout, totout - totin);
566 strlcat(buf, tmp, PAGE_SIZE);
567
568 buffer_done:
569 len = strnlen(buf, PAGE_SIZE);
570
571 return len;
572 }
573
574 static ssize_t
lpfc_bg_info_show(struct device * dev,struct device_attribute * attr,char * buf)575 lpfc_bg_info_show(struct device *dev, struct device_attribute *attr,
576 char *buf)
577 {
578 struct Scsi_Host *shost = class_to_shost(dev);
579 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
580 struct lpfc_hba *phba = vport->phba;
581
582 if (phba->cfg_enable_bg) {
583 if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
584 return scnprintf(buf, PAGE_SIZE,
585 "BlockGuard Enabled\n");
586 else
587 return scnprintf(buf, PAGE_SIZE,
588 "BlockGuard Not Supported\n");
589 } else
590 return scnprintf(buf, PAGE_SIZE,
591 "BlockGuard Disabled\n");
592 }
593
594 static ssize_t
lpfc_bg_guard_err_show(struct device * dev,struct device_attribute * attr,char * buf)595 lpfc_bg_guard_err_show(struct device *dev, struct device_attribute *attr,
596 char *buf)
597 {
598 struct Scsi_Host *shost = class_to_shost(dev);
599 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
600 struct lpfc_hba *phba = vport->phba;
601
602 return scnprintf(buf, PAGE_SIZE, "%llu\n",
603 (unsigned long long)phba->bg_guard_err_cnt);
604 }
605
606 static ssize_t
lpfc_bg_apptag_err_show(struct device * dev,struct device_attribute * attr,char * buf)607 lpfc_bg_apptag_err_show(struct device *dev, struct device_attribute *attr,
608 char *buf)
609 {
610 struct Scsi_Host *shost = class_to_shost(dev);
611 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
612 struct lpfc_hba *phba = vport->phba;
613
614 return scnprintf(buf, PAGE_SIZE, "%llu\n",
615 (unsigned long long)phba->bg_apptag_err_cnt);
616 }
617
618 static ssize_t
lpfc_bg_reftag_err_show(struct device * dev,struct device_attribute * attr,char * buf)619 lpfc_bg_reftag_err_show(struct device *dev, struct device_attribute *attr,
620 char *buf)
621 {
622 struct Scsi_Host *shost = class_to_shost(dev);
623 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
624 struct lpfc_hba *phba = vport->phba;
625
626 return scnprintf(buf, PAGE_SIZE, "%llu\n",
627 (unsigned long long)phba->bg_reftag_err_cnt);
628 }
629
630 /**
631 * lpfc_info_show - Return some pci info about the host in ascii
632 * @dev: class converted to a Scsi_host structure.
633 * @attr: device attribute, not used.
634 * @buf: on return contains the formatted text from lpfc_info().
635 *
636 * Returns: size of formatted string.
637 **/
638 static ssize_t
lpfc_info_show(struct device * dev,struct device_attribute * attr,char * buf)639 lpfc_info_show(struct device *dev, struct device_attribute *attr,
640 char *buf)
641 {
642 struct Scsi_Host *host = class_to_shost(dev);
643
644 return scnprintf(buf, PAGE_SIZE, "%s\n", lpfc_info(host));
645 }
646
647 /**
648 * lpfc_serialnum_show - Return the hba serial number in ascii
649 * @dev: class converted to a Scsi_host structure.
650 * @attr: device attribute, not used.
651 * @buf: on return contains the formatted text serial number.
652 *
653 * Returns: size of formatted string.
654 **/
655 static ssize_t
lpfc_serialnum_show(struct device * dev,struct device_attribute * attr,char * buf)656 lpfc_serialnum_show(struct device *dev, struct device_attribute *attr,
657 char *buf)
658 {
659 struct Scsi_Host *shost = class_to_shost(dev);
660 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
661 struct lpfc_hba *phba = vport->phba;
662
663 return scnprintf(buf, PAGE_SIZE, "%s\n", phba->SerialNumber);
664 }
665
666 /**
667 * lpfc_temp_sensor_show - Return the temperature sensor level
668 * @dev: class converted to a Scsi_host structure.
669 * @attr: device attribute, not used.
670 * @buf: on return contains the formatted support level.
671 *
672 * Description:
673 * Returns a number indicating the temperature sensor level currently
674 * supported, zero or one in ascii.
675 *
676 * Returns: size of formatted string.
677 **/
678 static ssize_t
lpfc_temp_sensor_show(struct device * dev,struct device_attribute * attr,char * buf)679 lpfc_temp_sensor_show(struct device *dev, struct device_attribute *attr,
680 char *buf)
681 {
682 struct Scsi_Host *shost = class_to_shost(dev);
683 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
684 struct lpfc_hba *phba = vport->phba;
685 return scnprintf(buf, PAGE_SIZE, "%d\n", phba->temp_sensor_support);
686 }
687
688 /**
689 * lpfc_modeldesc_show - Return the model description of the hba
690 * @dev: class converted to a Scsi_host structure.
691 * @attr: device attribute, not used.
692 * @buf: on return contains the scsi vpd model description.
693 *
694 * Returns: size of formatted string.
695 **/
696 static ssize_t
lpfc_modeldesc_show(struct device * dev,struct device_attribute * attr,char * buf)697 lpfc_modeldesc_show(struct device *dev, struct device_attribute *attr,
698 char *buf)
699 {
700 struct Scsi_Host *shost = class_to_shost(dev);
701 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
702 struct lpfc_hba *phba = vport->phba;
703
704 return scnprintf(buf, PAGE_SIZE, "%s\n", phba->ModelDesc);
705 }
706
707 /**
708 * lpfc_modelname_show - Return the model name of the hba
709 * @dev: class converted to a Scsi_host structure.
710 * @attr: device attribute, not used.
711 * @buf: on return contains the scsi vpd model name.
712 *
713 * Returns: size of formatted string.
714 **/
715 static ssize_t
lpfc_modelname_show(struct device * dev,struct device_attribute * attr,char * buf)716 lpfc_modelname_show(struct device *dev, struct device_attribute *attr,
717 char *buf)
718 {
719 struct Scsi_Host *shost = class_to_shost(dev);
720 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
721 struct lpfc_hba *phba = vport->phba;
722
723 return scnprintf(buf, PAGE_SIZE, "%s\n", phba->ModelName);
724 }
725
726 /**
727 * lpfc_programtype_show - Return the program type of the hba
728 * @dev: class converted to a Scsi_host structure.
729 * @attr: device attribute, not used.
730 * @buf: on return contains the scsi vpd program type.
731 *
732 * Returns: size of formatted string.
733 **/
734 static ssize_t
lpfc_programtype_show(struct device * dev,struct device_attribute * attr,char * buf)735 lpfc_programtype_show(struct device *dev, struct device_attribute *attr,
736 char *buf)
737 {
738 struct Scsi_Host *shost = class_to_shost(dev);
739 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
740 struct lpfc_hba *phba = vport->phba;
741
742 return scnprintf(buf, PAGE_SIZE, "%s\n", phba->ProgramType);
743 }
744
745 /**
746 * lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag
747 * @dev: class converted to a Scsi_host structure.
748 * @attr: device attribute, not used.
749 * @buf: on return contains the Menlo Maintenance sli flag.
750 *
751 * Returns: size of formatted string.
752 **/
753 static ssize_t
lpfc_mlomgmt_show(struct device * dev,struct device_attribute * attr,char * buf)754 lpfc_mlomgmt_show(struct device *dev, struct device_attribute *attr, char *buf)
755 {
756 struct Scsi_Host *shost = class_to_shost(dev);
757 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
758 struct lpfc_hba *phba = vport->phba;
759
760 return scnprintf(buf, PAGE_SIZE, "%d\n",
761 (phba->sli.sli_flag & LPFC_MENLO_MAINT));
762 }
763
764 /**
765 * lpfc_vportnum_show - Return the port number in ascii of the hba
766 * @dev: class converted to a Scsi_host structure.
767 * @attr: device attribute, not used.
768 * @buf: on return contains scsi vpd program type.
769 *
770 * Returns: size of formatted string.
771 **/
772 static ssize_t
lpfc_vportnum_show(struct device * dev,struct device_attribute * attr,char * buf)773 lpfc_vportnum_show(struct device *dev, struct device_attribute *attr,
774 char *buf)
775 {
776 struct Scsi_Host *shost = class_to_shost(dev);
777 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
778 struct lpfc_hba *phba = vport->phba;
779
780 return scnprintf(buf, PAGE_SIZE, "%s\n", phba->Port);
781 }
782
783 /**
784 * lpfc_fwrev_show - Return the firmware rev running in the hba
785 * @dev: class converted to a Scsi_host structure.
786 * @attr: device attribute, not used.
787 * @buf: on return contains the scsi vpd program type.
788 *
789 * Returns: size of formatted string.
790 **/
791 static ssize_t
lpfc_fwrev_show(struct device * dev,struct device_attribute * attr,char * buf)792 lpfc_fwrev_show(struct device *dev, struct device_attribute *attr,
793 char *buf)
794 {
795 struct Scsi_Host *shost = class_to_shost(dev);
796 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
797 struct lpfc_hba *phba = vport->phba;
798 uint32_t if_type;
799 uint8_t sli_family;
800 char fwrev[FW_REV_STR_SIZE];
801 int len;
802
803 lpfc_decode_firmware_rev(phba, fwrev, 1);
804 if_type = phba->sli4_hba.pc_sli4_params.if_type;
805 sli_family = phba->sli4_hba.pc_sli4_params.sli_family;
806
807 if (phba->sli_rev < LPFC_SLI_REV4)
808 len = scnprintf(buf, PAGE_SIZE, "%s, sli-%d\n",
809 fwrev, phba->sli_rev);
810 else
811 len = scnprintf(buf, PAGE_SIZE, "%s, sli-%d:%d:%x\n",
812 fwrev, phba->sli_rev, if_type, sli_family);
813
814 return len;
815 }
816
817 /**
818 * lpfc_hdw_show - Return the jedec information about the hba
819 * @dev: class converted to a Scsi_host structure.
820 * @attr: device attribute, not used.
821 * @buf: on return contains the scsi vpd program type.
822 *
823 * Returns: size of formatted string.
824 **/
825 static ssize_t
lpfc_hdw_show(struct device * dev,struct device_attribute * attr,char * buf)826 lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf)
827 {
828 char hdw[9];
829 struct Scsi_Host *shost = class_to_shost(dev);
830 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
831 struct lpfc_hba *phba = vport->phba;
832 lpfc_vpd_t *vp = &phba->vpd;
833
834 lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
835 return scnprintf(buf, PAGE_SIZE, "%s %08x %08x\n", hdw,
836 vp->rev.smRev, vp->rev.smFwRev);
837 }
838
839 /**
840 * lpfc_option_rom_version_show - Return the adapter ROM FCode version
841 * @dev: class converted to a Scsi_host structure.
842 * @attr: device attribute, not used.
843 * @buf: on return contains the ROM and FCode ascii strings.
844 *
845 * Returns: size of formatted string.
846 **/
847 static ssize_t
lpfc_option_rom_version_show(struct device * dev,struct device_attribute * attr,char * buf)848 lpfc_option_rom_version_show(struct device *dev, struct device_attribute *attr,
849 char *buf)
850 {
851 struct Scsi_Host *shost = class_to_shost(dev);
852 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
853 struct lpfc_hba *phba = vport->phba;
854 char fwrev[FW_REV_STR_SIZE];
855
856 if (phba->sli_rev < LPFC_SLI_REV4)
857 return scnprintf(buf, PAGE_SIZE, "%s\n",
858 phba->OptionROMVersion);
859
860 lpfc_decode_firmware_rev(phba, fwrev, 1);
861 return scnprintf(buf, PAGE_SIZE, "%s\n", fwrev);
862 }
863
864 /**
865 * lpfc_link_state_show - Return the link state of the port
866 * @dev: class converted to a Scsi_host structure.
867 * @attr: device attribute, not used.
868 * @buf: on return contains text describing the state of the link.
869 *
870 * Notes:
871 * The switch statement has no default so zero will be returned.
872 *
873 * Returns: size of formatted string.
874 **/
875 static ssize_t
lpfc_link_state_show(struct device * dev,struct device_attribute * attr,char * buf)876 lpfc_link_state_show(struct device *dev, struct device_attribute *attr,
877 char *buf)
878 {
879 struct Scsi_Host *shost = class_to_shost(dev);
880 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
881 struct lpfc_hba *phba = vport->phba;
882 int len = 0;
883
884 switch (phba->link_state) {
885 case LPFC_LINK_UNKNOWN:
886 case LPFC_WARM_START:
887 case LPFC_INIT_START:
888 case LPFC_INIT_MBX_CMDS:
889 case LPFC_LINK_DOWN:
890 case LPFC_HBA_ERROR:
891 if (phba->hba_flag & LINK_DISABLED)
892 len += scnprintf(buf + len, PAGE_SIZE-len,
893 "Link Down - User disabled\n");
894 else
895 len += scnprintf(buf + len, PAGE_SIZE-len,
896 "Link Down\n");
897 break;
898 case LPFC_LINK_UP:
899 case LPFC_CLEAR_LA:
900 case LPFC_HBA_READY:
901 len += scnprintf(buf + len, PAGE_SIZE-len, "Link Up - ");
902
903 switch (vport->port_state) {
904 case LPFC_LOCAL_CFG_LINK:
905 len += scnprintf(buf + len, PAGE_SIZE-len,
906 "Configuring Link\n");
907 break;
908 case LPFC_FDISC:
909 case LPFC_FLOGI:
910 case LPFC_FABRIC_CFG_LINK:
911 case LPFC_NS_REG:
912 case LPFC_NS_QRY:
913 case LPFC_BUILD_DISC_LIST:
914 case LPFC_DISC_AUTH:
915 len += scnprintf(buf + len, PAGE_SIZE - len,
916 "Discovery\n");
917 break;
918 case LPFC_VPORT_READY:
919 len += scnprintf(buf + len, PAGE_SIZE - len,
920 "Ready\n");
921 break;
922
923 case LPFC_VPORT_FAILED:
924 len += scnprintf(buf + len, PAGE_SIZE - len,
925 "Failed\n");
926 break;
927
928 case LPFC_VPORT_UNKNOWN:
929 len += scnprintf(buf + len, PAGE_SIZE - len,
930 "Unknown\n");
931 break;
932 }
933 if (phba->sli.sli_flag & LPFC_MENLO_MAINT)
934 len += scnprintf(buf + len, PAGE_SIZE-len,
935 " Menlo Maint Mode\n");
936 else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
937 if (vport->fc_flag & FC_PUBLIC_LOOP)
938 len += scnprintf(buf + len, PAGE_SIZE-len,
939 " Public Loop\n");
940 else
941 len += scnprintf(buf + len, PAGE_SIZE-len,
942 " Private Loop\n");
943 } else {
944 if (vport->fc_flag & FC_FABRIC)
945 len += scnprintf(buf + len, PAGE_SIZE-len,
946 " Fabric\n");
947 else
948 len += scnprintf(buf + len, PAGE_SIZE-len,
949 " Point-2-Point\n");
950 }
951 }
952
953 if ((phba->sli_rev == LPFC_SLI_REV4) &&
954 ((bf_get(lpfc_sli_intf_if_type,
955 &phba->sli4_hba.sli_intf) ==
956 LPFC_SLI_INTF_IF_TYPE_6))) {
957 struct lpfc_trunk_link link = phba->trunk_link;
958
959 if (bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba))
960 len += scnprintf(buf + len, PAGE_SIZE - len,
961 "Trunk port 0: Link %s %s\n",
962 (link.link0.state == LPFC_LINK_UP) ?
963 "Up" : "Down. ",
964 trunk_errmsg[link.link0.fault]);
965
966 if (bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba))
967 len += scnprintf(buf + len, PAGE_SIZE - len,
968 "Trunk port 1: Link %s %s\n",
969 (link.link1.state == LPFC_LINK_UP) ?
970 "Up" : "Down. ",
971 trunk_errmsg[link.link1.fault]);
972
973 if (bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba))
974 len += scnprintf(buf + len, PAGE_SIZE - len,
975 "Trunk port 2: Link %s %s\n",
976 (link.link2.state == LPFC_LINK_UP) ?
977 "Up" : "Down. ",
978 trunk_errmsg[link.link2.fault]);
979
980 if (bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba))
981 len += scnprintf(buf + len, PAGE_SIZE - len,
982 "Trunk port 3: Link %s %s\n",
983 (link.link3.state == LPFC_LINK_UP) ?
984 "Up" : "Down. ",
985 trunk_errmsg[link.link3.fault]);
986
987 }
988
989 return len;
990 }
991
992 /**
993 * lpfc_sli4_protocol_show - Return the fip mode of the HBA
994 * @dev: class unused variable.
995 * @attr: device attribute, not used.
996 * @buf: on return contains the module description text.
997 *
998 * Returns: size of formatted string.
999 **/
1000 static ssize_t
lpfc_sli4_protocol_show(struct device * dev,struct device_attribute * attr,char * buf)1001 lpfc_sli4_protocol_show(struct device *dev, struct device_attribute *attr,
1002 char *buf)
1003 {
1004 struct Scsi_Host *shost = class_to_shost(dev);
1005 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1006 struct lpfc_hba *phba = vport->phba;
1007
1008 if (phba->sli_rev < LPFC_SLI_REV4)
1009 return scnprintf(buf, PAGE_SIZE, "fc\n");
1010
1011 if (phba->sli4_hba.lnk_info.lnk_dv == LPFC_LNK_DAT_VAL) {
1012 if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_GE)
1013 return scnprintf(buf, PAGE_SIZE, "fcoe\n");
1014 if (phba->sli4_hba.lnk_info.lnk_tp == LPFC_LNK_TYPE_FC)
1015 return scnprintf(buf, PAGE_SIZE, "fc\n");
1016 }
1017 return scnprintf(buf, PAGE_SIZE, "unknown\n");
1018 }
1019
1020 /**
1021 * lpfc_oas_supported_show - Return whether or not Optimized Access Storage
1022 * (OAS) is supported.
1023 * @dev: class unused variable.
1024 * @attr: device attribute, not used.
1025 * @buf: on return contains the module description text.
1026 *
1027 * Returns: size of formatted string.
1028 **/
1029 static ssize_t
lpfc_oas_supported_show(struct device * dev,struct device_attribute * attr,char * buf)1030 lpfc_oas_supported_show(struct device *dev, struct device_attribute *attr,
1031 char *buf)
1032 {
1033 struct Scsi_Host *shost = class_to_shost(dev);
1034 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
1035 struct lpfc_hba *phba = vport->phba;
1036
1037 return scnprintf(buf, PAGE_SIZE, "%d\n",
1038 phba->sli4_hba.pc_sli4_params.oas_supported);
1039 }
1040
1041 /**
1042 * lpfc_link_state_store - Transition the link_state on an HBA port
1043 * @dev: class device that is converted into a Scsi_host.
1044 * @attr: device attribute, not used.
1045 * @buf: one or more lpfc_polling_flags values.
1046 * @count: not used.
1047 *
1048 * Returns:
1049 * -EINVAL if the buffer is not "up" or "down"
1050 * return from link state change function if non-zero
1051 * length of the buf on success
1052 **/
1053 static ssize_t
lpfc_link_state_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1054 lpfc_link_state_store(struct device *dev, struct device_attribute *attr,
1055 const char *buf, size_t count)
1056 {
1057 struct Scsi_Host *shost = class_to_shost(dev);
1058 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1059 struct lpfc_hba *phba = vport->phba;
1060
1061 int status = -EINVAL;
1062
1063 if ((strncmp(buf, "up", sizeof("up") - 1) == 0) &&
1064 (phba->link_state == LPFC_LINK_DOWN))
1065 status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
1066 else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) &&
1067 (phba->link_state >= LPFC_LINK_UP))
1068 status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT);
1069
1070 if (status == 0)
1071 return strlen(buf);
1072 else
1073 return status;
1074 }
1075
1076 /**
1077 * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports
1078 * @dev: class device that is converted into a Scsi_host.
1079 * @attr: device attribute, not used.
1080 * @buf: on return contains the sum of fc mapped and unmapped.
1081 *
1082 * Description:
1083 * Returns the ascii text number of the sum of the fc mapped and unmapped
1084 * vport counts.
1085 *
1086 * Returns: size of formatted string.
1087 **/
1088 static ssize_t
lpfc_num_discovered_ports_show(struct device * dev,struct device_attribute * attr,char * buf)1089 lpfc_num_discovered_ports_show(struct device *dev,
1090 struct device_attribute *attr, char *buf)
1091 {
1092 struct Scsi_Host *shost = class_to_shost(dev);
1093 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1094
1095 return scnprintf(buf, PAGE_SIZE, "%d\n",
1096 vport->fc_map_cnt + vport->fc_unmap_cnt);
1097 }
1098
1099 /**
1100 * lpfc_issue_lip - Misnomer, name carried over from long ago
1101 * @shost: Scsi_Host pointer.
1102 *
1103 * Description:
1104 * Bring the link down gracefully then re-init the link. The firmware will
1105 * re-init the fiber channel interface as required. Does not issue a LIP.
1106 *
1107 * Returns:
1108 * -EPERM port offline or management commands are being blocked
1109 * -ENOMEM cannot allocate memory for the mailbox command
1110 * -EIO error sending the mailbox command
1111 * zero for success
1112 **/
1113 static int
lpfc_issue_lip(struct Scsi_Host * shost)1114 lpfc_issue_lip(struct Scsi_Host *shost)
1115 {
1116 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1117 struct lpfc_hba *phba = vport->phba;
1118 LPFC_MBOXQ_t *pmboxq;
1119 int mbxstatus = MBXERR_ERROR;
1120
1121 /*
1122 * If the link is offline, disabled or BLOCK_MGMT_IO
1123 * it doesn't make any sense to allow issue_lip
1124 */
1125 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
1126 (phba->hba_flag & LINK_DISABLED) ||
1127 (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO))
1128 return -EPERM;
1129
1130 pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
1131
1132 if (!pmboxq)
1133 return -ENOMEM;
1134
1135 memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1136 pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1137 pmboxq->u.mb.mbxOwner = OWN_HOST;
1138
1139 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
1140
1141 if ((mbxstatus == MBX_SUCCESS) &&
1142 (pmboxq->u.mb.mbxStatus == 0 ||
1143 pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) {
1144 memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1145 lpfc_init_link(phba, pmboxq, phba->cfg_topology,
1146 phba->cfg_link_speed);
1147 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1148 phba->fc_ratov * 2);
1149 if ((mbxstatus == MBX_SUCCESS) &&
1150 (pmboxq->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION))
1151 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
1152 "2859 SLI authentication is required "
1153 "for INIT_LINK but has not done yet\n");
1154 }
1155
1156 lpfc_set_loopback_flag(phba);
1157 if (mbxstatus != MBX_TIMEOUT)
1158 mempool_free(pmboxq, phba->mbox_mem_pool);
1159
1160 if (mbxstatus == MBXERR_ERROR)
1161 return -EIO;
1162
1163 return 0;
1164 }
1165
1166 int
lpfc_emptyq_wait(struct lpfc_hba * phba,struct list_head * q,spinlock_t * lock)1167 lpfc_emptyq_wait(struct lpfc_hba *phba, struct list_head *q, spinlock_t *lock)
1168 {
1169 int cnt = 0;
1170
1171 spin_lock_irq(lock);
1172 while (!list_empty(q)) {
1173 spin_unlock_irq(lock);
1174 msleep(20);
1175 if (cnt++ > 250) { /* 5 secs */
1176 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1177 "0466 Outstanding IO when "
1178 "bringing Adapter offline\n");
1179 return 0;
1180 }
1181 spin_lock_irq(lock);
1182 }
1183 spin_unlock_irq(lock);
1184 return 1;
1185 }
1186
1187 /**
1188 * lpfc_do_offline - Issues a mailbox command to bring the link down
1189 * @phba: lpfc_hba pointer.
1190 * @type: LPFC_EVT_OFFLINE, LPFC_EVT_WARM_START, LPFC_EVT_KILL.
1191 *
1192 * Notes:
1193 * Assumes any error from lpfc_do_offline() will be negative.
1194 * Can wait up to 5 seconds for the port ring buffers count
1195 * to reach zero, prints a warning if it is not zero and continues.
1196 * lpfc_workq_post_event() returns a non-zero return code if call fails.
1197 *
1198 * Returns:
1199 * -EIO error posting the event
1200 * zero for success
1201 **/
1202 static int
lpfc_do_offline(struct lpfc_hba * phba,uint32_t type)1203 lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
1204 {
1205 struct completion online_compl;
1206 struct lpfc_queue *qp = NULL;
1207 struct lpfc_sli_ring *pring;
1208 struct lpfc_sli *psli;
1209 int status = 0;
1210 int i;
1211 int rc;
1212
1213 init_completion(&online_compl);
1214 rc = lpfc_workq_post_event(phba, &status, &online_compl,
1215 LPFC_EVT_OFFLINE_PREP);
1216 if (rc == 0)
1217 return -ENOMEM;
1218
1219 wait_for_completion(&online_compl);
1220
1221 if (status != 0)
1222 return -EIO;
1223
1224 psli = &phba->sli;
1225
1226 /*
1227 * If freeing the queues have already started, don't access them.
1228 * Otherwise set FREE_WAIT to indicate that queues are being used
1229 * to hold the freeing process until we finish.
1230 */
1231 spin_lock_irq(&phba->hbalock);
1232 if (!(psli->sli_flag & LPFC_QUEUE_FREE_INIT)) {
1233 psli->sli_flag |= LPFC_QUEUE_FREE_WAIT;
1234 } else {
1235 spin_unlock_irq(&phba->hbalock);
1236 goto skip_wait;
1237 }
1238 spin_unlock_irq(&phba->hbalock);
1239
1240 /* Wait a little for things to settle down, but not
1241 * long enough for dev loss timeout to expire.
1242 */
1243 if (phba->sli_rev != LPFC_SLI_REV4) {
1244 for (i = 0; i < psli->num_rings; i++) {
1245 pring = &psli->sli3_ring[i];
1246 if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
1247 &phba->hbalock))
1248 goto out;
1249 }
1250 } else {
1251 list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
1252 pring = qp->pring;
1253 if (!pring)
1254 continue;
1255 if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
1256 &pring->ring_lock))
1257 goto out;
1258 }
1259 }
1260 out:
1261 spin_lock_irq(&phba->hbalock);
1262 psli->sli_flag &= ~LPFC_QUEUE_FREE_WAIT;
1263 spin_unlock_irq(&phba->hbalock);
1264
1265 skip_wait:
1266 init_completion(&online_compl);
1267 rc = lpfc_workq_post_event(phba, &status, &online_compl, type);
1268 if (rc == 0)
1269 return -ENOMEM;
1270
1271 wait_for_completion(&online_compl);
1272
1273 if (status != 0)
1274 return -EIO;
1275
1276 return 0;
1277 }
1278
1279 /**
1280 * lpfc_reset_pci_bus - resets PCI bridge controller's secondary bus of an HBA
1281 * @phba: lpfc_hba pointer.
1282 *
1283 * Description:
1284 * Issues a PCI secondary bus reset for the phba->pcidev.
1285 *
1286 * Notes:
1287 * First walks the bus_list to ensure only PCI devices with Emulex
1288 * vendor id, device ids that support hot reset, only one occurrence
1289 * of function 0, and all ports on the bus are in offline mode to ensure the
1290 * hot reset only affects one valid HBA.
1291 *
1292 * Returns:
1293 * -ENOTSUPP, cfg_enable_hba_reset must be of value 2
1294 * -ENODEV, NULL ptr to pcidev
1295 * -EBADSLT, detected invalid device
1296 * -EBUSY, port is not in offline state
1297 * 0, successful
1298 */
1299 static int
lpfc_reset_pci_bus(struct lpfc_hba * phba)1300 lpfc_reset_pci_bus(struct lpfc_hba *phba)
1301 {
1302 struct pci_dev *pdev = phba->pcidev;
1303 struct Scsi_Host *shost = NULL;
1304 struct lpfc_hba *phba_other = NULL;
1305 struct pci_dev *ptr = NULL;
1306 int res;
1307
1308 if (phba->cfg_enable_hba_reset != 2)
1309 return -ENOTSUPP;
1310
1311 if (!pdev) {
1312 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, "8345 pdev NULL!\n");
1313 return -ENODEV;
1314 }
1315
1316 res = lpfc_check_pci_resettable(phba);
1317 if (res)
1318 return res;
1319
1320 /* Walk the list of devices on the pci_dev's bus */
1321 list_for_each_entry(ptr, &pdev->bus->devices, bus_list) {
1322 /* Check port is offline */
1323 shost = pci_get_drvdata(ptr);
1324 if (shost) {
1325 phba_other =
1326 ((struct lpfc_vport *)shost->hostdata)->phba;
1327 if (!(phba_other->pport->fc_flag & FC_OFFLINE_MODE)) {
1328 lpfc_printf_log(phba_other, KERN_INFO, LOG_INIT,
1329 "8349 WWPN = 0x%02x%02x%02x%02x"
1330 "%02x%02x%02x%02x is not "
1331 "offline!\n",
1332 phba_other->wwpn[0],
1333 phba_other->wwpn[1],
1334 phba_other->wwpn[2],
1335 phba_other->wwpn[3],
1336 phba_other->wwpn[4],
1337 phba_other->wwpn[5],
1338 phba_other->wwpn[6],
1339 phba_other->wwpn[7]);
1340 return -EBUSY;
1341 }
1342 }
1343 }
1344
1345 /* Issue PCI bus reset */
1346 res = pci_reset_bus(pdev);
1347 if (res) {
1348 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1349 "8350 PCI reset bus failed: %d\n", res);
1350 }
1351
1352 return res;
1353 }
1354
1355 /**
1356 * lpfc_selective_reset - Offline then onlines the port
1357 * @phba: lpfc_hba pointer.
1358 *
1359 * Description:
1360 * If the port is configured to allow a reset then the hba is brought
1361 * offline then online.
1362 *
1363 * Notes:
1364 * Assumes any error from lpfc_do_offline() will be negative.
1365 * Do not make this function static.
1366 *
1367 * Returns:
1368 * lpfc_do_offline() return code if not zero
1369 * -EIO reset not configured or error posting the event
1370 * zero for success
1371 **/
1372 int
lpfc_selective_reset(struct lpfc_hba * phba)1373 lpfc_selective_reset(struct lpfc_hba *phba)
1374 {
1375 struct completion online_compl;
1376 int status = 0;
1377 int rc;
1378
1379 if (!phba->cfg_enable_hba_reset)
1380 return -EACCES;
1381
1382 if (!(phba->pport->fc_flag & FC_OFFLINE_MODE)) {
1383 status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1384
1385 if (status != 0)
1386 return status;
1387 }
1388
1389 init_completion(&online_compl);
1390 rc = lpfc_workq_post_event(phba, &status, &online_compl,
1391 LPFC_EVT_ONLINE);
1392 if (rc == 0)
1393 return -ENOMEM;
1394
1395 wait_for_completion(&online_compl);
1396
1397 if (status != 0)
1398 return -EIO;
1399
1400 return 0;
1401 }
1402
1403 /**
1404 * lpfc_issue_reset - Selectively resets an adapter
1405 * @dev: class device that is converted into a Scsi_host.
1406 * @attr: device attribute, not used.
1407 * @buf: containing the string "selective".
1408 * @count: unused variable.
1409 *
1410 * Description:
1411 * If the buf contains the string "selective" then lpfc_selective_reset()
1412 * is called to perform the reset.
1413 *
1414 * Notes:
1415 * Assumes any error from lpfc_selective_reset() will be negative.
1416 * If lpfc_selective_reset() returns zero then the length of the buffer
1417 * is returned which indicates success
1418 *
1419 * Returns:
1420 * -EINVAL if the buffer does not contain the string "selective"
1421 * length of buf if lpfc-selective_reset() if the call succeeds
1422 * return value of lpfc_selective_reset() if the call fails
1423 **/
1424 static ssize_t
lpfc_issue_reset(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1425 lpfc_issue_reset(struct device *dev, struct device_attribute *attr,
1426 const char *buf, size_t count)
1427 {
1428 struct Scsi_Host *shost = class_to_shost(dev);
1429 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1430 struct lpfc_hba *phba = vport->phba;
1431 int status = -EINVAL;
1432
1433 if (!phba->cfg_enable_hba_reset)
1434 return -EACCES;
1435
1436 if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
1437 status = phba->lpfc_selective_reset(phba);
1438
1439 if (status == 0)
1440 return strlen(buf);
1441 else
1442 return status;
1443 }
1444
1445 /**
1446 * lpfc_sli4_pdev_status_reg_wait - Wait for pdev status register for readyness
1447 * @phba: lpfc_hba pointer.
1448 *
1449 * Description:
1450 * SLI4 interface type-2 device to wait on the sliport status register for
1451 * the readyness after performing a firmware reset.
1452 *
1453 * Returns:
1454 * zero for success, -EPERM when port does not have privilege to perform the
1455 * reset, -EIO when port timeout from recovering from the reset.
1456 *
1457 * Note:
1458 * As the caller will interpret the return code by value, be careful in making
1459 * change or addition to return codes.
1460 **/
1461 int
lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba * phba)1462 lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba)
1463 {
1464 struct lpfc_register portstat_reg = {0};
1465 int i;
1466
1467 msleep(100);
1468 if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
1469 &portstat_reg.word0))
1470 return -EIO;
1471
1472 /* verify if privileged for the request operation */
1473 if (!bf_get(lpfc_sliport_status_rn, &portstat_reg) &&
1474 !bf_get(lpfc_sliport_status_err, &portstat_reg))
1475 return -EPERM;
1476
1477 /* wait for the SLI port firmware ready after firmware reset */
1478 for (i = 0; i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT; i++) {
1479 msleep(10);
1480 if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
1481 &portstat_reg.word0))
1482 continue;
1483 if (!bf_get(lpfc_sliport_status_err, &portstat_reg))
1484 continue;
1485 if (!bf_get(lpfc_sliport_status_rn, &portstat_reg))
1486 continue;
1487 if (!bf_get(lpfc_sliport_status_rdy, &portstat_reg))
1488 continue;
1489 break;
1490 }
1491
1492 if (i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT)
1493 return 0;
1494 else
1495 return -EIO;
1496 }
1497
1498 /**
1499 * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc
1500 * @phba: lpfc_hba pointer.
1501 * @opcode: The sli4 config command opcode.
1502 *
1503 * Description:
1504 * Request SLI4 interface type-2 device to perform a physical register set
1505 * access.
1506 *
1507 * Returns:
1508 * zero for success
1509 **/
1510 static ssize_t
lpfc_sli4_pdev_reg_request(struct lpfc_hba * phba,uint32_t opcode)1511 lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode)
1512 {
1513 struct completion online_compl;
1514 struct pci_dev *pdev = phba->pcidev;
1515 uint32_t before_fc_flag;
1516 uint32_t sriov_nr_virtfn;
1517 uint32_t reg_val;
1518 int status = 0, rc = 0;
1519 int job_posted = 1, sriov_err;
1520
1521 if (!phba->cfg_enable_hba_reset)
1522 return -EACCES;
1523
1524 if ((phba->sli_rev < LPFC_SLI_REV4) ||
1525 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
1526 LPFC_SLI_INTF_IF_TYPE_2))
1527 return -EPERM;
1528
1529 /* Keep state if we need to restore back */
1530 before_fc_flag = phba->pport->fc_flag;
1531 sriov_nr_virtfn = phba->cfg_sriov_nr_virtfn;
1532
1533 /* Disable SR-IOV virtual functions if enabled */
1534 if (phba->cfg_sriov_nr_virtfn) {
1535 pci_disable_sriov(pdev);
1536 phba->cfg_sriov_nr_virtfn = 0;
1537 }
1538
1539 if (opcode == LPFC_FW_DUMP)
1540 phba->hba_flag |= HBA_FW_DUMP_OP;
1541
1542 status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1543
1544 if (status != 0) {
1545 phba->hba_flag &= ~HBA_FW_DUMP_OP;
1546 return status;
1547 }
1548
1549 /* wait for the device to be quiesced before firmware reset */
1550 msleep(100);
1551
1552 reg_val = readl(phba->sli4_hba.conf_regs_memmap_p +
1553 LPFC_CTL_PDEV_CTL_OFFSET);
1554
1555 if (opcode == LPFC_FW_DUMP)
1556 reg_val |= LPFC_FW_DUMP_REQUEST;
1557 else if (opcode == LPFC_FW_RESET)
1558 reg_val |= LPFC_CTL_PDEV_CTL_FRST;
1559 else if (opcode == LPFC_DV_RESET)
1560 reg_val |= LPFC_CTL_PDEV_CTL_DRST;
1561
1562 writel(reg_val, phba->sli4_hba.conf_regs_memmap_p +
1563 LPFC_CTL_PDEV_CTL_OFFSET);
1564 /* flush */
1565 readl(phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET);
1566
1567 /* delay driver action following IF_TYPE_2 reset */
1568 rc = lpfc_sli4_pdev_status_reg_wait(phba);
1569
1570 if (rc == -EPERM) {
1571 /* no privilege for reset */
1572 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1573 "3150 No privilege to perform the requested "
1574 "access: x%x\n", reg_val);
1575 } else if (rc == -EIO) {
1576 /* reset failed, there is nothing more we can do */
1577 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1578 "3153 Fail to perform the requested "
1579 "access: x%x\n", reg_val);
1580 return rc;
1581 }
1582
1583 /* keep the original port state */
1584 if (before_fc_flag & FC_OFFLINE_MODE)
1585 goto out;
1586
1587 init_completion(&online_compl);
1588 job_posted = lpfc_workq_post_event(phba, &status, &online_compl,
1589 LPFC_EVT_ONLINE);
1590 if (!job_posted)
1591 goto out;
1592
1593 wait_for_completion(&online_compl);
1594
1595 out:
1596 /* in any case, restore the virtual functions enabled as before */
1597 if (sriov_nr_virtfn) {
1598 sriov_err =
1599 lpfc_sli_probe_sriov_nr_virtfn(phba, sriov_nr_virtfn);
1600 if (!sriov_err)
1601 phba->cfg_sriov_nr_virtfn = sriov_nr_virtfn;
1602 }
1603
1604 /* return proper error code */
1605 if (!rc) {
1606 if (!job_posted)
1607 rc = -ENOMEM;
1608 else if (status)
1609 rc = -EIO;
1610 }
1611 return rc;
1612 }
1613
1614 /**
1615 * lpfc_nport_evt_cnt_show - Return the number of nport events
1616 * @dev: class device that is converted into a Scsi_host.
1617 * @attr: device attribute, not used.
1618 * @buf: on return contains the ascii number of nport events.
1619 *
1620 * Returns: size of formatted string.
1621 **/
1622 static ssize_t
lpfc_nport_evt_cnt_show(struct device * dev,struct device_attribute * attr,char * buf)1623 lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr,
1624 char *buf)
1625 {
1626 struct Scsi_Host *shost = class_to_shost(dev);
1627 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1628 struct lpfc_hba *phba = vport->phba;
1629
1630 return scnprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
1631 }
1632
1633 static int
lpfc_set_trunking(struct lpfc_hba * phba,char * buff_out)1634 lpfc_set_trunking(struct lpfc_hba *phba, char *buff_out)
1635 {
1636 LPFC_MBOXQ_t *mbox = NULL;
1637 unsigned long val = 0;
1638 char *pval = NULL;
1639 int rc = 0;
1640
1641 if (!strncmp("enable", buff_out,
1642 strlen("enable"))) {
1643 pval = buff_out + strlen("enable") + 1;
1644 rc = kstrtoul(pval, 0, &val);
1645 if (rc)
1646 return rc; /* Invalid number */
1647 } else if (!strncmp("disable", buff_out,
1648 strlen("disable"))) {
1649 val = 0;
1650 } else {
1651 return -EINVAL; /* Invalid command */
1652 }
1653
1654 switch (val) {
1655 case 0:
1656 val = 0x0; /* Disable */
1657 break;
1658 case 2:
1659 val = 0x1; /* Enable two port trunk */
1660 break;
1661 case 4:
1662 val = 0x2; /* Enable four port trunk */
1663 break;
1664 default:
1665 return -EINVAL;
1666 }
1667
1668 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1669 "0070 Set trunk mode with val %ld ", val);
1670
1671 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1672 if (!mbox)
1673 return -ENOMEM;
1674
1675 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
1676 LPFC_MBOX_OPCODE_FCOE_FC_SET_TRUNK_MODE,
1677 12, LPFC_SLI4_MBX_EMBED);
1678
1679 bf_set(lpfc_mbx_set_trunk_mode,
1680 &mbox->u.mqe.un.set_trunk_mode,
1681 val);
1682 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
1683 if (rc)
1684 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1685 "0071 Set trunk mode failed with status: %d",
1686 rc);
1687 mempool_free(mbox, phba->mbox_mem_pool);
1688
1689 return 0;
1690 }
1691
1692 /**
1693 * lpfc_board_mode_show - Return the state of the board
1694 * @dev: class device that is converted into a Scsi_host.
1695 * @attr: device attribute, not used.
1696 * @buf: on return contains the state of the adapter.
1697 *
1698 * Returns: size of formatted string.
1699 **/
1700 static ssize_t
lpfc_board_mode_show(struct device * dev,struct device_attribute * attr,char * buf)1701 lpfc_board_mode_show(struct device *dev, struct device_attribute *attr,
1702 char *buf)
1703 {
1704 struct Scsi_Host *shost = class_to_shost(dev);
1705 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1706 struct lpfc_hba *phba = vport->phba;
1707 char * state;
1708
1709 if (phba->link_state == LPFC_HBA_ERROR)
1710 state = "error";
1711 else if (phba->link_state == LPFC_WARM_START)
1712 state = "warm start";
1713 else if (phba->link_state == LPFC_INIT_START)
1714 state = "offline";
1715 else
1716 state = "online";
1717
1718 return scnprintf(buf, PAGE_SIZE, "%s\n", state);
1719 }
1720
1721 /**
1722 * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state
1723 * @dev: class device that is converted into a Scsi_host.
1724 * @attr: device attribute, not used.
1725 * @buf: containing one of the strings "online", "offline", "warm" or "error".
1726 * @count: unused variable.
1727 *
1728 * Returns:
1729 * -EACCES if enable hba reset not enabled
1730 * -EINVAL if the buffer does not contain a valid string (see above)
1731 * -EIO if lpfc_workq_post_event() or lpfc_do_offline() fails
1732 * buf length greater than zero indicates success
1733 **/
1734 static ssize_t
lpfc_board_mode_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)1735 lpfc_board_mode_store(struct device *dev, struct device_attribute *attr,
1736 const char *buf, size_t count)
1737 {
1738 struct Scsi_Host *shost = class_to_shost(dev);
1739 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1740 struct lpfc_hba *phba = vport->phba;
1741 struct completion online_compl;
1742 char *board_mode_str = NULL;
1743 int status = 0;
1744 int rc;
1745
1746 if (!phba->cfg_enable_hba_reset) {
1747 status = -EACCES;
1748 goto board_mode_out;
1749 }
1750
1751 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1752 "3050 lpfc_board_mode set to %s\n", buf);
1753
1754 init_completion(&online_compl);
1755
1756 if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
1757 rc = lpfc_workq_post_event(phba, &status, &online_compl,
1758 LPFC_EVT_ONLINE);
1759 if (rc == 0) {
1760 status = -ENOMEM;
1761 goto board_mode_out;
1762 }
1763 wait_for_completion(&online_compl);
1764 if (status)
1765 status = -EIO;
1766 } else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
1767 status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
1768 else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
1769 if (phba->sli_rev == LPFC_SLI_REV4)
1770 status = -EINVAL;
1771 else
1772 status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
1773 else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
1774 if (phba->sli_rev == LPFC_SLI_REV4)
1775 status = -EINVAL;
1776 else
1777 status = lpfc_do_offline(phba, LPFC_EVT_KILL);
1778 else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0)
1779 status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_DUMP);
1780 else if (strncmp(buf, "fw_reset", sizeof("fw_reset") - 1) == 0)
1781 status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_RESET);
1782 else if (strncmp(buf, "dv_reset", sizeof("dv_reset") - 1) == 0)
1783 status = lpfc_sli4_pdev_reg_request(phba, LPFC_DV_RESET);
1784 else if (strncmp(buf, "pci_bus_reset", sizeof("pci_bus_reset") - 1)
1785 == 0)
1786 status = lpfc_reset_pci_bus(phba);
1787 else if (strncmp(buf, "heartbeat", sizeof("heartbeat") - 1) == 0)
1788 lpfc_issue_hb_tmo(phba);
1789 else if (strncmp(buf, "trunk", sizeof("trunk") - 1) == 0)
1790 status = lpfc_set_trunking(phba, (char *)buf + sizeof("trunk"));
1791 else
1792 status = -EINVAL;
1793
1794 board_mode_out:
1795 if (!status)
1796 return strlen(buf);
1797 else {
1798 board_mode_str = strchr(buf, '\n');
1799 if (board_mode_str)
1800 *board_mode_str = '\0';
1801 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
1802 "3097 Failed \"%s\", status(%d), "
1803 "fc_flag(x%x)\n",
1804 buf, status, phba->pport->fc_flag);
1805 return status;
1806 }
1807 }
1808
1809 /**
1810 * lpfc_get_hba_info - Return various bits of informaton about the adapter
1811 * @phba: pointer to the adapter structure.
1812 * @mxri: max xri count.
1813 * @axri: available xri count.
1814 * @mrpi: max rpi count.
1815 * @arpi: available rpi count.
1816 * @mvpi: max vpi count.
1817 * @avpi: available vpi count.
1818 *
1819 * Description:
1820 * If an integer pointer for an count is not null then the value for the
1821 * count is returned.
1822 *
1823 * Returns:
1824 * zero on error
1825 * one for success
1826 **/
1827 static int
lpfc_get_hba_info(struct lpfc_hba * phba,uint32_t * mxri,uint32_t * axri,uint32_t * mrpi,uint32_t * arpi,uint32_t * mvpi,uint32_t * avpi)1828 lpfc_get_hba_info(struct lpfc_hba *phba,
1829 uint32_t *mxri, uint32_t *axri,
1830 uint32_t *mrpi, uint32_t *arpi,
1831 uint32_t *mvpi, uint32_t *avpi)
1832 {
1833 struct lpfc_mbx_read_config *rd_config;
1834 LPFC_MBOXQ_t *pmboxq;
1835 MAILBOX_t *pmb;
1836 int rc = 0;
1837 uint32_t max_vpi;
1838
1839 /*
1840 * prevent udev from issuing mailbox commands until the port is
1841 * configured.
1842 */
1843 if (phba->link_state < LPFC_LINK_DOWN ||
1844 !phba->mbox_mem_pool ||
1845 (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
1846 return 0;
1847
1848 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
1849 return 0;
1850
1851 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1852 if (!pmboxq)
1853 return 0;
1854 memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1855
1856 pmb = &pmboxq->u.mb;
1857 pmb->mbxCommand = MBX_READ_CONFIG;
1858 pmb->mbxOwner = OWN_HOST;
1859 pmboxq->ctx_buf = NULL;
1860
1861 if (phba->pport->fc_flag & FC_OFFLINE_MODE)
1862 rc = MBX_NOT_FINISHED;
1863 else
1864 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1865
1866 if (rc != MBX_SUCCESS) {
1867 if (rc != MBX_TIMEOUT)
1868 mempool_free(pmboxq, phba->mbox_mem_pool);
1869 return 0;
1870 }
1871
1872 if (phba->sli_rev == LPFC_SLI_REV4) {
1873 rd_config = &pmboxq->u.mqe.un.rd_config;
1874 if (mrpi)
1875 *mrpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
1876 if (arpi)
1877 *arpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config) -
1878 phba->sli4_hba.max_cfg_param.rpi_used;
1879 if (mxri)
1880 *mxri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
1881 if (axri)
1882 *axri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config) -
1883 phba->sli4_hba.max_cfg_param.xri_used;
1884
1885 /* Account for differences with SLI-3. Get vpi count from
1886 * mailbox data and subtract one for max vpi value.
1887 */
1888 max_vpi = (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) > 0) ?
1889 (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) - 1) : 0;
1890
1891 /* Limit the max we support */
1892 if (max_vpi > LPFC_MAX_VPI)
1893 max_vpi = LPFC_MAX_VPI;
1894 if (mvpi)
1895 *mvpi = max_vpi;
1896 if (avpi)
1897 *avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used;
1898 } else {
1899 if (mrpi)
1900 *mrpi = pmb->un.varRdConfig.max_rpi;
1901 if (arpi)
1902 *arpi = pmb->un.varRdConfig.avail_rpi;
1903 if (mxri)
1904 *mxri = pmb->un.varRdConfig.max_xri;
1905 if (axri)
1906 *axri = pmb->un.varRdConfig.avail_xri;
1907 if (mvpi)
1908 *mvpi = pmb->un.varRdConfig.max_vpi;
1909 if (avpi) {
1910 /* avail_vpi is only valid if link is up and ready */
1911 if (phba->link_state == LPFC_HBA_READY)
1912 *avpi = pmb->un.varRdConfig.avail_vpi;
1913 else
1914 *avpi = pmb->un.varRdConfig.max_vpi;
1915 }
1916 }
1917
1918 mempool_free(pmboxq, phba->mbox_mem_pool);
1919 return 1;
1920 }
1921
1922 /**
1923 * lpfc_max_rpi_show - Return maximum rpi
1924 * @dev: class device that is converted into a Scsi_host.
1925 * @attr: device attribute, not used.
1926 * @buf: on return contains the maximum rpi count in decimal or "Unknown".
1927 *
1928 * Description:
1929 * Calls lpfc_get_hba_info() asking for just the mrpi count.
1930 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1931 * to "Unknown" and the buffer length is returned, therefore the caller
1932 * must check for "Unknown" in the buffer to detect a failure.
1933 *
1934 * Returns: size of formatted string.
1935 **/
1936 static ssize_t
lpfc_max_rpi_show(struct device * dev,struct device_attribute * attr,char * buf)1937 lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr,
1938 char *buf)
1939 {
1940 struct Scsi_Host *shost = class_to_shost(dev);
1941 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1942 struct lpfc_hba *phba = vport->phba;
1943 uint32_t cnt;
1944
1945 if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL))
1946 return scnprintf(buf, PAGE_SIZE, "%d\n", cnt);
1947 return scnprintf(buf, PAGE_SIZE, "Unknown\n");
1948 }
1949
1950 /**
1951 * lpfc_used_rpi_show - Return maximum rpi minus available rpi
1952 * @dev: class device that is converted into a Scsi_host.
1953 * @attr: device attribute, not used.
1954 * @buf: containing the used rpi count in decimal or "Unknown".
1955 *
1956 * Description:
1957 * Calls lpfc_get_hba_info() asking for just the mrpi and arpi counts.
1958 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1959 * to "Unknown" and the buffer length is returned, therefore the caller
1960 * must check for "Unknown" in the buffer to detect a failure.
1961 *
1962 * Returns: size of formatted string.
1963 **/
1964 static ssize_t
lpfc_used_rpi_show(struct device * dev,struct device_attribute * attr,char * buf)1965 lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr,
1966 char *buf)
1967 {
1968 struct Scsi_Host *shost = class_to_shost(dev);
1969 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1970 struct lpfc_hba *phba = vport->phba;
1971 uint32_t cnt, acnt;
1972
1973 if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL))
1974 return scnprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
1975 return scnprintf(buf, PAGE_SIZE, "Unknown\n");
1976 }
1977
1978 /**
1979 * lpfc_max_xri_show - Return maximum xri
1980 * @dev: class device that is converted into a Scsi_host.
1981 * @attr: device attribute, not used.
1982 * @buf: on return contains the maximum xri count in decimal or "Unknown".
1983 *
1984 * Description:
1985 * Calls lpfc_get_hba_info() asking for just the mrpi count.
1986 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
1987 * to "Unknown" and the buffer length is returned, therefore the caller
1988 * must check for "Unknown" in the buffer to detect a failure.
1989 *
1990 * Returns: size of formatted string.
1991 **/
1992 static ssize_t
lpfc_max_xri_show(struct device * dev,struct device_attribute * attr,char * buf)1993 lpfc_max_xri_show(struct device *dev, struct device_attribute *attr,
1994 char *buf)
1995 {
1996 struct Scsi_Host *shost = class_to_shost(dev);
1997 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1998 struct lpfc_hba *phba = vport->phba;
1999 uint32_t cnt;
2000
2001 if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL))
2002 return scnprintf(buf, PAGE_SIZE, "%d\n", cnt);
2003 return scnprintf(buf, PAGE_SIZE, "Unknown\n");
2004 }
2005
2006 /**
2007 * lpfc_used_xri_show - Return maximum xpi minus the available xpi
2008 * @dev: class device that is converted into a Scsi_host.
2009 * @attr: device attribute, not used.
2010 * @buf: on return contains the used xri count in decimal or "Unknown".
2011 *
2012 * Description:
2013 * Calls lpfc_get_hba_info() asking for just the mxri and axri counts.
2014 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
2015 * to "Unknown" and the buffer length is returned, therefore the caller
2016 * must check for "Unknown" in the buffer to detect a failure.
2017 *
2018 * Returns: size of formatted string.
2019 **/
2020 static ssize_t
lpfc_used_xri_show(struct device * dev,struct device_attribute * attr,char * buf)2021 lpfc_used_xri_show(struct device *dev, struct device_attribute *attr,
2022 char *buf)
2023 {
2024 struct Scsi_Host *shost = class_to_shost(dev);
2025 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2026 struct lpfc_hba *phba = vport->phba;
2027 uint32_t cnt, acnt;
2028
2029 if (lpfc_get_hba_info(phba, &cnt, &acnt, NULL, NULL, NULL, NULL))
2030 return scnprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
2031 return scnprintf(buf, PAGE_SIZE, "Unknown\n");
2032 }
2033
2034 /**
2035 * lpfc_max_vpi_show - Return maximum vpi
2036 * @dev: class device that is converted into a Scsi_host.
2037 * @attr: device attribute, not used.
2038 * @buf: on return contains the maximum vpi count in decimal or "Unknown".
2039 *
2040 * Description:
2041 * Calls lpfc_get_hba_info() asking for just the mvpi count.
2042 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
2043 * to "Unknown" and the buffer length is returned, therefore the caller
2044 * must check for "Unknown" in the buffer to detect a failure.
2045 *
2046 * Returns: size of formatted string.
2047 **/
2048 static ssize_t
lpfc_max_vpi_show(struct device * dev,struct device_attribute * attr,char * buf)2049 lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr,
2050 char *buf)
2051 {
2052 struct Scsi_Host *shost = class_to_shost(dev);
2053 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2054 struct lpfc_hba *phba = vport->phba;
2055 uint32_t cnt;
2056
2057 if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, NULL))
2058 return scnprintf(buf, PAGE_SIZE, "%d\n", cnt);
2059 return scnprintf(buf, PAGE_SIZE, "Unknown\n");
2060 }
2061
2062 /**
2063 * lpfc_used_vpi_show - Return maximum vpi minus the available vpi
2064 * @dev: class device that is converted into a Scsi_host.
2065 * @attr: device attribute, not used.
2066 * @buf: on return contains the used vpi count in decimal or "Unknown".
2067 *
2068 * Description:
2069 * Calls lpfc_get_hba_info() asking for just the mvpi and avpi counts.
2070 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set
2071 * to "Unknown" and the buffer length is returned, therefore the caller
2072 * must check for "Unknown" in the buffer to detect a failure.
2073 *
2074 * Returns: size of formatted string.
2075 **/
2076 static ssize_t
lpfc_used_vpi_show(struct device * dev,struct device_attribute * attr,char * buf)2077 lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr,
2078 char *buf)
2079 {
2080 struct Scsi_Host *shost = class_to_shost(dev);
2081 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2082 struct lpfc_hba *phba = vport->phba;
2083 uint32_t cnt, acnt;
2084
2085 if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, &acnt))
2086 return scnprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt));
2087 return scnprintf(buf, PAGE_SIZE, "Unknown\n");
2088 }
2089
2090 /**
2091 * lpfc_npiv_info_show - Return text about NPIV support for the adapter
2092 * @dev: class device that is converted into a Scsi_host.
2093 * @attr: device attribute, not used.
2094 * @buf: text that must be interpreted to determine if npiv is supported.
2095 *
2096 * Description:
2097 * Buffer will contain text indicating npiv is not suppoerted on the port,
2098 * the port is an NPIV physical port, or it is an npiv virtual port with
2099 * the id of the vport.
2100 *
2101 * Returns: size of formatted string.
2102 **/
2103 static ssize_t
lpfc_npiv_info_show(struct device * dev,struct device_attribute * attr,char * buf)2104 lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr,
2105 char *buf)
2106 {
2107 struct Scsi_Host *shost = class_to_shost(dev);
2108 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2109 struct lpfc_hba *phba = vport->phba;
2110
2111 if (!(phba->max_vpi))
2112 return scnprintf(buf, PAGE_SIZE, "NPIV Not Supported\n");
2113 if (vport->port_type == LPFC_PHYSICAL_PORT)
2114 return scnprintf(buf, PAGE_SIZE, "NPIV Physical\n");
2115 return scnprintf(buf, PAGE_SIZE, "NPIV Virtual (VPI %d)\n", vport->vpi);
2116 }
2117
2118 /**
2119 * lpfc_poll_show - Return text about poll support for the adapter
2120 * @dev: class device that is converted into a Scsi_host.
2121 * @attr: device attribute, not used.
2122 * @buf: on return contains the cfg_poll in hex.
2123 *
2124 * Notes:
2125 * cfg_poll should be a lpfc_polling_flags type.
2126 *
2127 * Returns: size of formatted string.
2128 **/
2129 static ssize_t
lpfc_poll_show(struct device * dev,struct device_attribute * attr,char * buf)2130 lpfc_poll_show(struct device *dev, struct device_attribute *attr,
2131 char *buf)
2132 {
2133 struct Scsi_Host *shost = class_to_shost(dev);
2134 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2135 struct lpfc_hba *phba = vport->phba;
2136
2137 return scnprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
2138 }
2139
2140 /**
2141 * lpfc_poll_store - Set the value of cfg_poll for the adapter
2142 * @dev: class device that is converted into a Scsi_host.
2143 * @attr: device attribute, not used.
2144 * @buf: one or more lpfc_polling_flags values.
2145 * @count: not used.
2146 *
2147 * Notes:
2148 * buf contents converted to integer and checked for a valid value.
2149 *
2150 * Returns:
2151 * -EINVAL if the buffer connot be converted or is out of range
2152 * length of the buf on success
2153 **/
2154 static ssize_t
lpfc_poll_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2155 lpfc_poll_store(struct device *dev, struct device_attribute *attr,
2156 const char *buf, size_t count)
2157 {
2158 struct Scsi_Host *shost = class_to_shost(dev);
2159 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2160 struct lpfc_hba *phba = vport->phba;
2161 uint32_t creg_val;
2162 uint32_t old_val;
2163 int val=0;
2164
2165 if (!isdigit(buf[0]))
2166 return -EINVAL;
2167
2168 if (sscanf(buf, "%i", &val) != 1)
2169 return -EINVAL;
2170
2171 if ((val & 0x3) != val)
2172 return -EINVAL;
2173
2174 if (phba->sli_rev == LPFC_SLI_REV4)
2175 val = 0;
2176
2177 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
2178 "3051 lpfc_poll changed from %d to %d\n",
2179 phba->cfg_poll, val);
2180
2181 spin_lock_irq(&phba->hbalock);
2182
2183 old_val = phba->cfg_poll;
2184
2185 if (val & ENABLE_FCP_RING_POLLING) {
2186 if ((val & DISABLE_FCP_RING_INT) &&
2187 !(old_val & DISABLE_FCP_RING_INT)) {
2188 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
2189 spin_unlock_irq(&phba->hbalock);
2190 return -EINVAL;
2191 }
2192 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
2193 writel(creg_val, phba->HCregaddr);
2194 readl(phba->HCregaddr); /* flush */
2195
2196 lpfc_poll_start_timer(phba);
2197 }
2198 } else if (val != 0x0) {
2199 spin_unlock_irq(&phba->hbalock);
2200 return -EINVAL;
2201 }
2202
2203 if (!(val & DISABLE_FCP_RING_INT) &&
2204 (old_val & DISABLE_FCP_RING_INT))
2205 {
2206 spin_unlock_irq(&phba->hbalock);
2207 del_timer(&phba->fcp_poll_timer);
2208 spin_lock_irq(&phba->hbalock);
2209 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
2210 spin_unlock_irq(&phba->hbalock);
2211 return -EINVAL;
2212 }
2213 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
2214 writel(creg_val, phba->HCregaddr);
2215 readl(phba->HCregaddr); /* flush */
2216 }
2217
2218 phba->cfg_poll = val;
2219
2220 spin_unlock_irq(&phba->hbalock);
2221
2222 return strlen(buf);
2223 }
2224
2225 /**
2226 * lpfc_sriov_hw_max_virtfn_show - Return maximum number of virtual functions
2227 * @dev: class converted to a Scsi_host structure.
2228 * @attr: device attribute, not used.
2229 * @buf: on return contains the formatted support level.
2230 *
2231 * Description:
2232 * Returns the maximum number of virtual functions a physical function can
2233 * support, 0 will be returned if called on virtual function.
2234 *
2235 * Returns: size of formatted string.
2236 **/
2237 static ssize_t
lpfc_sriov_hw_max_virtfn_show(struct device * dev,struct device_attribute * attr,char * buf)2238 lpfc_sriov_hw_max_virtfn_show(struct device *dev,
2239 struct device_attribute *attr,
2240 char *buf)
2241 {
2242 struct Scsi_Host *shost = class_to_shost(dev);
2243 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2244 struct lpfc_hba *phba = vport->phba;
2245 uint16_t max_nr_virtfn;
2246
2247 max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba);
2248 return scnprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn);
2249 }
2250
lpfc_rangecheck(uint val,uint min,uint max)2251 static inline bool lpfc_rangecheck(uint val, uint min, uint max)
2252 {
2253 return val >= min && val <= max;
2254 }
2255
2256 /**
2257 * lpfc_enable_bbcr_set: Sets an attribute value.
2258 * @phba: pointer the the adapter structure.
2259 * @val: integer attribute value.
2260 *
2261 * Description:
2262 * Validates the min and max values then sets the
2263 * adapter config field if in the valid range. prints error message
2264 * and does not set the parameter if invalid.
2265 *
2266 * Returns:
2267 * zero on success
2268 * -EINVAL if val is invalid
2269 */
2270 static ssize_t
lpfc_enable_bbcr_set(struct lpfc_hba * phba,uint val)2271 lpfc_enable_bbcr_set(struct lpfc_hba *phba, uint val)
2272 {
2273 if (lpfc_rangecheck(val, 0, 1) && phba->sli_rev == LPFC_SLI_REV4) {
2274 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2275 "3068 lpfc_enable_bbcr changed from %d to "
2276 "%d\n", phba->cfg_enable_bbcr, val);
2277 phba->cfg_enable_bbcr = val;
2278 return 0;
2279 }
2280 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2281 "0451 lpfc_enable_bbcr cannot set to %d, range is 0, "
2282 "1\n", val);
2283 return -EINVAL;
2284 }
2285
2286 /*
2287 * lpfc_param_show - Return a cfg attribute value in decimal
2288 *
2289 * Description:
2290 * Macro that given an attr e.g. hba_queue_depth expands
2291 * into a function with the name lpfc_hba_queue_depth_show.
2292 *
2293 * lpfc_##attr##_show: Return the decimal value of an adapters cfg_xxx field.
2294 * @dev: class device that is converted into a Scsi_host.
2295 * @attr: device attribute, not used.
2296 * @buf: on return contains the attribute value in decimal.
2297 *
2298 * Returns: size of formatted string.
2299 **/
2300 #define lpfc_param_show(attr) \
2301 static ssize_t \
2302 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2303 char *buf) \
2304 { \
2305 struct Scsi_Host *shost = class_to_shost(dev);\
2306 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2307 struct lpfc_hba *phba = vport->phba;\
2308 return scnprintf(buf, PAGE_SIZE, "%d\n",\
2309 phba->cfg_##attr);\
2310 }
2311
2312 /*
2313 * lpfc_param_hex_show - Return a cfg attribute value in hex
2314 *
2315 * Description:
2316 * Macro that given an attr e.g. hba_queue_depth expands
2317 * into a function with the name lpfc_hba_queue_depth_show
2318 *
2319 * lpfc_##attr##_show: Return the hex value of an adapters cfg_xxx field.
2320 * @dev: class device that is converted into a Scsi_host.
2321 * @attr: device attribute, not used.
2322 * @buf: on return contains the attribute value in hexadecimal.
2323 *
2324 * Returns: size of formatted string.
2325 **/
2326 #define lpfc_param_hex_show(attr) \
2327 static ssize_t \
2328 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2329 char *buf) \
2330 { \
2331 struct Scsi_Host *shost = class_to_shost(dev);\
2332 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2333 struct lpfc_hba *phba = vport->phba;\
2334 uint val = 0;\
2335 val = phba->cfg_##attr;\
2336 return scnprintf(buf, PAGE_SIZE, "%#x\n",\
2337 phba->cfg_##attr);\
2338 }
2339
2340 /*
2341 * lpfc_param_init - Initializes a cfg attribute
2342 *
2343 * Description:
2344 * Macro that given an attr e.g. hba_queue_depth expands
2345 * into a function with the name lpfc_hba_queue_depth_init. The macro also
2346 * takes a default argument, a minimum and maximum argument.
2347 *
2348 * lpfc_##attr##_init: Initializes an attribute.
2349 * @phba: pointer the the adapter structure.
2350 * @val: integer attribute value.
2351 *
2352 * Validates the min and max values then sets the adapter config field
2353 * accordingly, or uses the default if out of range and prints an error message.
2354 *
2355 * Returns:
2356 * zero on success
2357 * -EINVAL if default used
2358 **/
2359 #define lpfc_param_init(attr, default, minval, maxval) \
2360 static int \
2361 lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \
2362 { \
2363 if (lpfc_rangecheck(val, minval, maxval)) {\
2364 phba->cfg_##attr = val;\
2365 return 0;\
2366 }\
2367 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
2368 "0449 lpfc_"#attr" attribute cannot be set to %d, "\
2369 "allowed range is ["#minval", "#maxval"]\n", val); \
2370 phba->cfg_##attr = default;\
2371 return -EINVAL;\
2372 }
2373
2374 /*
2375 * lpfc_param_set - Set a cfg attribute value
2376 *
2377 * Description:
2378 * Macro that given an attr e.g. hba_queue_depth expands
2379 * into a function with the name lpfc_hba_queue_depth_set
2380 *
2381 * lpfc_##attr##_set: Sets an attribute value.
2382 * @phba: pointer the the adapter structure.
2383 * @val: integer attribute value.
2384 *
2385 * Description:
2386 * Validates the min and max values then sets the
2387 * adapter config field if in the valid range. prints error message
2388 * and does not set the parameter if invalid.
2389 *
2390 * Returns:
2391 * zero on success
2392 * -EINVAL if val is invalid
2393 **/
2394 #define lpfc_param_set(attr, default, minval, maxval) \
2395 static int \
2396 lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \
2397 { \
2398 if (lpfc_rangecheck(val, minval, maxval)) {\
2399 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
2400 "3052 lpfc_" #attr " changed from %d to %d\n", \
2401 phba->cfg_##attr, val); \
2402 phba->cfg_##attr = val;\
2403 return 0;\
2404 }\
2405 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
2406 "0450 lpfc_"#attr" attribute cannot be set to %d, "\
2407 "allowed range is ["#minval", "#maxval"]\n", val); \
2408 return -EINVAL;\
2409 }
2410
2411 /*
2412 * lpfc_param_store - Set a vport attribute value
2413 *
2414 * Description:
2415 * Macro that given an attr e.g. hba_queue_depth expands
2416 * into a function with the name lpfc_hba_queue_depth_store.
2417 *
2418 * lpfc_##attr##_store: Set an sttribute value.
2419 * @dev: class device that is converted into a Scsi_host.
2420 * @attr: device attribute, not used.
2421 * @buf: contains the attribute value in ascii.
2422 * @count: not used.
2423 *
2424 * Description:
2425 * Convert the ascii text number to an integer, then
2426 * use the lpfc_##attr##_set function to set the value.
2427 *
2428 * Returns:
2429 * -EINVAL if val is invalid or lpfc_##attr##_set() fails
2430 * length of buffer upon success.
2431 **/
2432 #define lpfc_param_store(attr) \
2433 static ssize_t \
2434 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
2435 const char *buf, size_t count) \
2436 { \
2437 struct Scsi_Host *shost = class_to_shost(dev);\
2438 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2439 struct lpfc_hba *phba = vport->phba;\
2440 uint val = 0;\
2441 if (!isdigit(buf[0]))\
2442 return -EINVAL;\
2443 if (sscanf(buf, "%i", &val) != 1)\
2444 return -EINVAL;\
2445 if (lpfc_##attr##_set(phba, val) == 0) \
2446 return strlen(buf);\
2447 else \
2448 return -EINVAL;\
2449 }
2450
2451 /*
2452 * lpfc_vport_param_show - Return decimal formatted cfg attribute value
2453 *
2454 * Description:
2455 * Macro that given an attr e.g. hba_queue_depth expands
2456 * into a function with the name lpfc_hba_queue_depth_show
2457 *
2458 * lpfc_##attr##_show: prints the attribute value in decimal.
2459 * @dev: class device that is converted into a Scsi_host.
2460 * @attr: device attribute, not used.
2461 * @buf: on return contains the attribute value in decimal.
2462 *
2463 * Returns: length of formatted string.
2464 **/
2465 #define lpfc_vport_param_show(attr) \
2466 static ssize_t \
2467 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2468 char *buf) \
2469 { \
2470 struct Scsi_Host *shost = class_to_shost(dev);\
2471 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2472 return scnprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\
2473 }
2474
2475 /*
2476 * lpfc_vport_param_hex_show - Return hex formatted attribute value
2477 *
2478 * Description:
2479 * Macro that given an attr e.g.
2480 * hba_queue_depth expands into a function with the name
2481 * lpfc_hba_queue_depth_show
2482 *
2483 * lpfc_##attr##_show: prints the attribute value in hexadecimal.
2484 * @dev: class device that is converted into a Scsi_host.
2485 * @attr: device attribute, not used.
2486 * @buf: on return contains the attribute value in hexadecimal.
2487 *
2488 * Returns: length of formatted string.
2489 **/
2490 #define lpfc_vport_param_hex_show(attr) \
2491 static ssize_t \
2492 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \
2493 char *buf) \
2494 { \
2495 struct Scsi_Host *shost = class_to_shost(dev);\
2496 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2497 return scnprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\
2498 }
2499
2500 /*
2501 * lpfc_vport_param_init - Initialize a vport cfg attribute
2502 *
2503 * Description:
2504 * Macro that given an attr e.g. hba_queue_depth expands
2505 * into a function with the name lpfc_hba_queue_depth_init. The macro also
2506 * takes a default argument, a minimum and maximum argument.
2507 *
2508 * lpfc_##attr##_init: validates the min and max values then sets the
2509 * adapter config field accordingly, or uses the default if out of range
2510 * and prints an error message.
2511 * @phba: pointer the the adapter structure.
2512 * @val: integer attribute value.
2513 *
2514 * Returns:
2515 * zero on success
2516 * -EINVAL if default used
2517 **/
2518 #define lpfc_vport_param_init(attr, default, minval, maxval) \
2519 static int \
2520 lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \
2521 { \
2522 if (lpfc_rangecheck(val, minval, maxval)) {\
2523 vport->cfg_##attr = val;\
2524 return 0;\
2525 }\
2526 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2527 "0423 lpfc_"#attr" attribute cannot be set to %d, "\
2528 "allowed range is ["#minval", "#maxval"]\n", val); \
2529 vport->cfg_##attr = default;\
2530 return -EINVAL;\
2531 }
2532
2533 /*
2534 * lpfc_vport_param_set - Set a vport cfg attribute
2535 *
2536 * Description:
2537 * Macro that given an attr e.g. hba_queue_depth expands
2538 * into a function with the name lpfc_hba_queue_depth_set
2539 *
2540 * lpfc_##attr##_set: validates the min and max values then sets the
2541 * adapter config field if in the valid range. prints error message
2542 * and does not set the parameter if invalid.
2543 * @phba: pointer the the adapter structure.
2544 * @val: integer attribute value.
2545 *
2546 * Returns:
2547 * zero on success
2548 * -EINVAL if val is invalid
2549 **/
2550 #define lpfc_vport_param_set(attr, default, minval, maxval) \
2551 static int \
2552 lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \
2553 { \
2554 if (lpfc_rangecheck(val, minval, maxval)) {\
2555 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2556 "3053 lpfc_" #attr \
2557 " changed from %d (x%x) to %d (x%x)\n", \
2558 vport->cfg_##attr, vport->cfg_##attr, \
2559 val, val); \
2560 vport->cfg_##attr = val;\
2561 return 0;\
2562 }\
2563 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \
2564 "0424 lpfc_"#attr" attribute cannot be set to %d, "\
2565 "allowed range is ["#minval", "#maxval"]\n", val); \
2566 return -EINVAL;\
2567 }
2568
2569 /*
2570 * lpfc_vport_param_store - Set a vport attribute
2571 *
2572 * Description:
2573 * Macro that given an attr e.g. hba_queue_depth
2574 * expands into a function with the name lpfc_hba_queue_depth_store
2575 *
2576 * lpfc_##attr##_store: convert the ascii text number to an integer, then
2577 * use the lpfc_##attr##_set function to set the value.
2578 * @cdev: class device that is converted into a Scsi_host.
2579 * @buf: contains the attribute value in decimal.
2580 * @count: not used.
2581 *
2582 * Returns:
2583 * -EINVAL if val is invalid or lpfc_##attr##_set() fails
2584 * length of buffer upon success.
2585 **/
2586 #define lpfc_vport_param_store(attr) \
2587 static ssize_t \
2588 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \
2589 const char *buf, size_t count) \
2590 { \
2591 struct Scsi_Host *shost = class_to_shost(dev);\
2592 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
2593 uint val = 0;\
2594 if (!isdigit(buf[0]))\
2595 return -EINVAL;\
2596 if (sscanf(buf, "%i", &val) != 1)\
2597 return -EINVAL;\
2598 if (lpfc_##attr##_set(vport, val) == 0) \
2599 return strlen(buf);\
2600 else \
2601 return -EINVAL;\
2602 }
2603
2604
2605 static DEVICE_ATTR(nvme_info, 0444, lpfc_nvme_info_show, NULL);
2606 static DEVICE_ATTR(scsi_stat, 0444, lpfc_scsi_stat_show, NULL);
2607 static DEVICE_ATTR(bg_info, S_IRUGO, lpfc_bg_info_show, NULL);
2608 static DEVICE_ATTR(bg_guard_err, S_IRUGO, lpfc_bg_guard_err_show, NULL);
2609 static DEVICE_ATTR(bg_apptag_err, S_IRUGO, lpfc_bg_apptag_err_show, NULL);
2610 static DEVICE_ATTR(bg_reftag_err, S_IRUGO, lpfc_bg_reftag_err_show, NULL);
2611 static DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
2612 static DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
2613 static DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
2614 static DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
2615 static DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
2616 static DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL);
2617 static DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
2618 static DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
2619 static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show,
2620 lpfc_link_state_store);
2621 static DEVICE_ATTR(option_rom_version, S_IRUGO,
2622 lpfc_option_rom_version_show, NULL);
2623 static DEVICE_ATTR(num_discovered_ports, S_IRUGO,
2624 lpfc_num_discovered_ports_show, NULL);
2625 static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL);
2626 static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
2627 static DEVICE_ATTR_RO(lpfc_drvr_version);
2628 static DEVICE_ATTR_RO(lpfc_enable_fip);
2629 static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
2630 lpfc_board_mode_show, lpfc_board_mode_store);
2631 static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
2632 static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL);
2633 static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL);
2634 static DEVICE_ATTR(max_rpi, S_IRUGO, lpfc_max_rpi_show, NULL);
2635 static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL);
2636 static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL);
2637 static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL);
2638 static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL);
2639 static DEVICE_ATTR_RO(lpfc_temp_sensor);
2640 static DEVICE_ATTR_RO(lpfc_sriov_hw_max_virtfn);
2641 static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
2642 static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
2643 NULL);
2644
2645 static char *lpfc_soft_wwn_key = "C99G71SL8032A";
2646 #define WWN_SZ 8
2647 /**
2648 * lpfc_wwn_set - Convert string to the 8 byte WWN value.
2649 * @buf: WWN string.
2650 * @cnt: Length of string.
2651 * @wwn: Array to receive converted wwn value.
2652 *
2653 * Returns:
2654 * -EINVAL if the buffer does not contain a valid wwn
2655 * 0 success
2656 **/
2657 static size_t
lpfc_wwn_set(const char * buf,size_t cnt,char wwn[])2658 lpfc_wwn_set(const char *buf, size_t cnt, char wwn[])
2659 {
2660 unsigned int i, j;
2661
2662 /* Count may include a LF at end of string */
2663 if (buf[cnt-1] == '\n')
2664 cnt--;
2665
2666 if ((cnt < 16) || (cnt > 18) || ((cnt == 17) && (*buf++ != 'x')) ||
2667 ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
2668 return -EINVAL;
2669
2670 memset(wwn, 0, WWN_SZ);
2671
2672 /* Validate and store the new name */
2673 for (i = 0, j = 0; i < 16; i++) {
2674 if ((*buf >= 'a') && (*buf <= 'f'))
2675 j = ((j << 4) | ((*buf++ - 'a') + 10));
2676 else if ((*buf >= 'A') && (*buf <= 'F'))
2677 j = ((j << 4) | ((*buf++ - 'A') + 10));
2678 else if ((*buf >= '0') && (*buf <= '9'))
2679 j = ((j << 4) | (*buf++ - '0'));
2680 else
2681 return -EINVAL;
2682 if (i % 2) {
2683 wwn[i/2] = j & 0xff;
2684 j = 0;
2685 }
2686 }
2687 return 0;
2688 }
2689 /**
2690 * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid
2691 * @dev: class device that is converted into a Scsi_host.
2692 * @attr: device attribute, not used.
2693 * @buf: containing the string lpfc_soft_wwn_key.
2694 * @count: must be size of lpfc_soft_wwn_key.
2695 *
2696 * Returns:
2697 * -EINVAL if the buffer does not contain lpfc_soft_wwn_key
2698 * length of buf indicates success
2699 **/
2700 static ssize_t
lpfc_soft_wwn_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2701 lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr,
2702 const char *buf, size_t count)
2703 {
2704 struct Scsi_Host *shost = class_to_shost(dev);
2705 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2706 struct lpfc_hba *phba = vport->phba;
2707 unsigned int cnt = count;
2708 uint8_t vvvl = vport->fc_sparam.cmn.valid_vendor_ver_level;
2709 u32 *fawwpn_key = (uint32_t *)&vport->fc_sparam.un.vendorVersion[0];
2710
2711 /*
2712 * We're doing a simple sanity check for soft_wwpn setting.
2713 * We require that the user write a specific key to enable
2714 * the soft_wwpn attribute to be settable. Once the attribute
2715 * is written, the enable key resets. If further updates are
2716 * desired, the key must be written again to re-enable the
2717 * attribute.
2718 *
2719 * The "key" is not secret - it is a hardcoded string shown
2720 * here. The intent is to protect against the random user or
2721 * application that is just writing attributes.
2722 */
2723 if (vvvl == 1 && cpu_to_be32(*fawwpn_key) == FAPWWN_KEY_VENDOR) {
2724 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2725 "0051 lpfc soft wwpn can not be enabled: "
2726 "fawwpn is enabled\n");
2727 return -EINVAL;
2728 }
2729
2730 /* count may include a LF at end of string */
2731 if (buf[cnt-1] == '\n')
2732 cnt--;
2733
2734 if ((cnt != strlen(lpfc_soft_wwn_key)) ||
2735 (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
2736 return -EINVAL;
2737
2738 phba->soft_wwn_enable = 1;
2739
2740 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2741 "lpfc%d: soft_wwpn assignment has been enabled.\n",
2742 phba->brd_no);
2743 dev_printk(KERN_WARNING, &phba->pcidev->dev,
2744 " The soft_wwpn feature is not supported by Broadcom.");
2745
2746 return count;
2747 }
2748 static DEVICE_ATTR_WO(lpfc_soft_wwn_enable);
2749
2750 /**
2751 * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter
2752 * @dev: class device that is converted into a Scsi_host.
2753 * @attr: device attribute, not used.
2754 * @buf: on return contains the wwpn in hexadecimal.
2755 *
2756 * Returns: size of formatted string.
2757 **/
2758 static ssize_t
lpfc_soft_wwpn_show(struct device * dev,struct device_attribute * attr,char * buf)2759 lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr,
2760 char *buf)
2761 {
2762 struct Scsi_Host *shost = class_to_shost(dev);
2763 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2764 struct lpfc_hba *phba = vport->phba;
2765
2766 return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
2767 (unsigned long long)phba->cfg_soft_wwpn);
2768 }
2769
2770 /**
2771 * lpfc_soft_wwpn_store - Set the ww port name of the adapter
2772 * @dev: class device that is converted into a Scsi_host.
2773 * @attr: device attribute, not used.
2774 * @buf: contains the wwpn in hexadecimal.
2775 * @count: number of wwpn bytes in buf
2776 *
2777 * Returns:
2778 * -EACCES hba reset not enabled, adapter over temp
2779 * -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid
2780 * -EIO error taking adapter offline or online
2781 * value of count on success
2782 **/
2783 static ssize_t
lpfc_soft_wwpn_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2784 lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr,
2785 const char *buf, size_t count)
2786 {
2787 struct Scsi_Host *shost = class_to_shost(dev);
2788 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2789 struct lpfc_hba *phba = vport->phba;
2790 struct completion online_compl;
2791 int stat1 = 0, stat2 = 0;
2792 unsigned int cnt = count;
2793 u8 wwpn[WWN_SZ];
2794 int rc;
2795
2796 if (!phba->cfg_enable_hba_reset)
2797 return -EACCES;
2798 spin_lock_irq(&phba->hbalock);
2799 if (phba->over_temp_state == HBA_OVER_TEMP) {
2800 spin_unlock_irq(&phba->hbalock);
2801 return -EACCES;
2802 }
2803 spin_unlock_irq(&phba->hbalock);
2804 /* count may include a LF at end of string */
2805 if (buf[cnt-1] == '\n')
2806 cnt--;
2807
2808 if (!phba->soft_wwn_enable)
2809 return -EINVAL;
2810
2811 /* lock setting wwpn, wwnn down */
2812 phba->soft_wwn_enable = 0;
2813
2814 rc = lpfc_wwn_set(buf, cnt, wwpn);
2815 if (rc) {
2816 /* not able to set wwpn, unlock it */
2817 phba->soft_wwn_enable = 1;
2818 return rc;
2819 }
2820
2821 phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
2822 fc_host_port_name(shost) = phba->cfg_soft_wwpn;
2823 if (phba->cfg_soft_wwnn)
2824 fc_host_node_name(shost) = phba->cfg_soft_wwnn;
2825
2826 dev_printk(KERN_NOTICE, &phba->pcidev->dev,
2827 "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
2828
2829 stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
2830 if (stat1)
2831 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2832 "0463 lpfc_soft_wwpn attribute set failed to "
2833 "reinit adapter - %d\n", stat1);
2834 init_completion(&online_compl);
2835 rc = lpfc_workq_post_event(phba, &stat2, &online_compl,
2836 LPFC_EVT_ONLINE);
2837 if (rc == 0)
2838 return -ENOMEM;
2839
2840 wait_for_completion(&online_compl);
2841 if (stat2)
2842 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2843 "0464 lpfc_soft_wwpn attribute set failed to "
2844 "reinit adapter - %d\n", stat2);
2845 return (stat1 || stat2) ? -EIO : count;
2846 }
2847 static DEVICE_ATTR_RW(lpfc_soft_wwpn);
2848
2849 /**
2850 * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter
2851 * @dev: class device that is converted into a Scsi_host.
2852 * @attr: device attribute, not used.
2853 * @buf: on return contains the wwnn in hexadecimal.
2854 *
2855 * Returns: size of formatted string.
2856 **/
2857 static ssize_t
lpfc_soft_wwnn_show(struct device * dev,struct device_attribute * attr,char * buf)2858 lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr,
2859 char *buf)
2860 {
2861 struct Scsi_Host *shost = class_to_shost(dev);
2862 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2863 return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
2864 (unsigned long long)phba->cfg_soft_wwnn);
2865 }
2866
2867 /**
2868 * lpfc_soft_wwnn_store - sets the ww node name of the adapter
2869 * @dev: class device that is converted into a Scsi_host.
2870 * @attr: device attribute, not used.
2871 * @buf: contains the ww node name in hexadecimal.
2872 * @count: number of wwnn bytes in buf.
2873 *
2874 * Returns:
2875 * -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid
2876 * value of count on success
2877 **/
2878 static ssize_t
lpfc_soft_wwnn_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2879 lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr,
2880 const char *buf, size_t count)
2881 {
2882 struct Scsi_Host *shost = class_to_shost(dev);
2883 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2884 unsigned int cnt = count;
2885 u8 wwnn[WWN_SZ];
2886 int rc;
2887
2888 /* count may include a LF at end of string */
2889 if (buf[cnt-1] == '\n')
2890 cnt--;
2891
2892 if (!phba->soft_wwn_enable)
2893 return -EINVAL;
2894
2895 rc = lpfc_wwn_set(buf, cnt, wwnn);
2896 if (rc) {
2897 /* Allow wwnn to be set many times, as long as the enable
2898 * is set. However, once the wwpn is set, everything locks.
2899 */
2900 return rc;
2901 }
2902
2903 phba->cfg_soft_wwnn = wwn_to_u64(wwnn);
2904
2905 dev_printk(KERN_NOTICE, &phba->pcidev->dev,
2906 "lpfc%d: soft_wwnn set. Value will take effect upon "
2907 "setting of the soft_wwpn\n", phba->brd_no);
2908
2909 return count;
2910 }
2911 static DEVICE_ATTR_RW(lpfc_soft_wwnn);
2912
2913 /**
2914 * lpfc_oas_tgt_show - Return wwpn of target whose luns maybe enabled for
2915 * Optimized Access Storage (OAS) operations.
2916 * @dev: class device that is converted into a Scsi_host.
2917 * @attr: device attribute, not used.
2918 * @buf: buffer for passing information.
2919 *
2920 * Returns:
2921 * value of count
2922 **/
2923 static ssize_t
lpfc_oas_tgt_show(struct device * dev,struct device_attribute * attr,char * buf)2924 lpfc_oas_tgt_show(struct device *dev, struct device_attribute *attr,
2925 char *buf)
2926 {
2927 struct Scsi_Host *shost = class_to_shost(dev);
2928 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2929
2930 return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
2931 wwn_to_u64(phba->cfg_oas_tgt_wwpn));
2932 }
2933
2934 /**
2935 * lpfc_oas_tgt_store - Store wwpn of target whose luns maybe enabled for
2936 * Optimized Access Storage (OAS) operations.
2937 * @dev: class device that is converted into a Scsi_host.
2938 * @attr: device attribute, not used.
2939 * @buf: buffer for passing information.
2940 * @count: Size of the data buffer.
2941 *
2942 * Returns:
2943 * -EINVAL count is invalid, invalid wwpn byte invalid
2944 * -EPERM oas is not supported by hba
2945 * value of count on success
2946 **/
2947 static ssize_t
lpfc_oas_tgt_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)2948 lpfc_oas_tgt_store(struct device *dev, struct device_attribute *attr,
2949 const char *buf, size_t count)
2950 {
2951 struct Scsi_Host *shost = class_to_shost(dev);
2952 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2953 unsigned int cnt = count;
2954 uint8_t wwpn[WWN_SZ];
2955 int rc;
2956
2957 if (!phba->cfg_fof)
2958 return -EPERM;
2959
2960 /* count may include a LF at end of string */
2961 if (buf[cnt-1] == '\n')
2962 cnt--;
2963
2964 rc = lpfc_wwn_set(buf, cnt, wwpn);
2965 if (rc)
2966 return rc;
2967
2968 memcpy(phba->cfg_oas_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2969 memcpy(phba->sli4_hba.oas_next_tgt_wwpn, wwpn, (8 * sizeof(uint8_t)));
2970 if (wwn_to_u64(wwpn) == 0)
2971 phba->cfg_oas_flags |= OAS_FIND_ANY_TARGET;
2972 else
2973 phba->cfg_oas_flags &= ~OAS_FIND_ANY_TARGET;
2974 phba->cfg_oas_flags &= ~OAS_LUN_VALID;
2975 phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
2976 return count;
2977 }
2978 static DEVICE_ATTR(lpfc_xlane_tgt, S_IRUGO | S_IWUSR,
2979 lpfc_oas_tgt_show, lpfc_oas_tgt_store);
2980
2981 /**
2982 * lpfc_oas_priority_show - Return wwpn of target whose luns maybe enabled for
2983 * Optimized Access Storage (OAS) operations.
2984 * @dev: class device that is converted into a Scsi_host.
2985 * @attr: device attribute, not used.
2986 * @buf: buffer for passing information.
2987 *
2988 * Returns:
2989 * value of count
2990 **/
2991 static ssize_t
lpfc_oas_priority_show(struct device * dev,struct device_attribute * attr,char * buf)2992 lpfc_oas_priority_show(struct device *dev, struct device_attribute *attr,
2993 char *buf)
2994 {
2995 struct Scsi_Host *shost = class_to_shost(dev);
2996 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
2997
2998 return scnprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_priority);
2999 }
3000
3001 /**
3002 * lpfc_oas_priority_store - Store wwpn of target whose luns maybe enabled for
3003 * Optimized Access Storage (OAS) operations.
3004 * @dev: class device that is converted into a Scsi_host.
3005 * @attr: device attribute, not used.
3006 * @buf: buffer for passing information.
3007 * @count: Size of the data buffer.
3008 *
3009 * Returns:
3010 * -EINVAL count is invalid, invalid wwpn byte invalid
3011 * -EPERM oas is not supported by hba
3012 * value of count on success
3013 **/
3014 static ssize_t
lpfc_oas_priority_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3015 lpfc_oas_priority_store(struct device *dev, struct device_attribute *attr,
3016 const char *buf, size_t count)
3017 {
3018 struct Scsi_Host *shost = class_to_shost(dev);
3019 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3020 unsigned int cnt = count;
3021 unsigned long val;
3022 int ret;
3023
3024 if (!phba->cfg_fof)
3025 return -EPERM;
3026
3027 /* count may include a LF at end of string */
3028 if (buf[cnt-1] == '\n')
3029 cnt--;
3030
3031 ret = kstrtoul(buf, 0, &val);
3032 if (ret || (val > 0x7f))
3033 return -EINVAL;
3034
3035 if (val)
3036 phba->cfg_oas_priority = (uint8_t)val;
3037 else
3038 phba->cfg_oas_priority = phba->cfg_XLanePriority;
3039 return count;
3040 }
3041 static DEVICE_ATTR(lpfc_xlane_priority, S_IRUGO | S_IWUSR,
3042 lpfc_oas_priority_show, lpfc_oas_priority_store);
3043
3044 /**
3045 * lpfc_oas_vpt_show - Return wwpn of vport whose targets maybe enabled
3046 * for Optimized Access Storage (OAS) operations.
3047 * @dev: class device that is converted into a Scsi_host.
3048 * @attr: device attribute, not used.
3049 * @buf: buffer for passing information.
3050 *
3051 * Returns:
3052 * value of count on success
3053 **/
3054 static ssize_t
lpfc_oas_vpt_show(struct device * dev,struct device_attribute * attr,char * buf)3055 lpfc_oas_vpt_show(struct device *dev, struct device_attribute *attr,
3056 char *buf)
3057 {
3058 struct Scsi_Host *shost = class_to_shost(dev);
3059 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3060
3061 return scnprintf(buf, PAGE_SIZE, "0x%llx\n",
3062 wwn_to_u64(phba->cfg_oas_vpt_wwpn));
3063 }
3064
3065 /**
3066 * lpfc_oas_vpt_store - Store wwpn of vport whose targets maybe enabled
3067 * for Optimized Access Storage (OAS) operations.
3068 * @dev: class device that is converted into a Scsi_host.
3069 * @attr: device attribute, not used.
3070 * @buf: buffer for passing information.
3071 * @count: Size of the data buffer.
3072 *
3073 * Returns:
3074 * -EINVAL count is invalid, invalid wwpn byte invalid
3075 * -EPERM oas is not supported by hba
3076 * value of count on success
3077 **/
3078 static ssize_t
lpfc_oas_vpt_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3079 lpfc_oas_vpt_store(struct device *dev, struct device_attribute *attr,
3080 const char *buf, size_t count)
3081 {
3082 struct Scsi_Host *shost = class_to_shost(dev);
3083 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3084 unsigned int cnt = count;
3085 uint8_t wwpn[WWN_SZ];
3086 int rc;
3087
3088 if (!phba->cfg_fof)
3089 return -EPERM;
3090
3091 /* count may include a LF at end of string */
3092 if (buf[cnt-1] == '\n')
3093 cnt--;
3094
3095 rc = lpfc_wwn_set(buf, cnt, wwpn);
3096 if (rc)
3097 return rc;
3098
3099 memcpy(phba->cfg_oas_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
3100 memcpy(phba->sli4_hba.oas_next_vpt_wwpn, wwpn, (8 * sizeof(uint8_t)));
3101 if (wwn_to_u64(wwpn) == 0)
3102 phba->cfg_oas_flags |= OAS_FIND_ANY_VPORT;
3103 else
3104 phba->cfg_oas_flags &= ~OAS_FIND_ANY_VPORT;
3105 phba->cfg_oas_flags &= ~OAS_LUN_VALID;
3106 if (phba->cfg_oas_priority == 0)
3107 phba->cfg_oas_priority = phba->cfg_XLanePriority;
3108 phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
3109 return count;
3110 }
3111 static DEVICE_ATTR(lpfc_xlane_vpt, S_IRUGO | S_IWUSR,
3112 lpfc_oas_vpt_show, lpfc_oas_vpt_store);
3113
3114 /**
3115 * lpfc_oas_lun_state_show - Return the current state (enabled or disabled)
3116 * of whether luns will be enabled or disabled
3117 * for Optimized Access Storage (OAS) operations.
3118 * @dev: class device that is converted into a Scsi_host.
3119 * @attr: device attribute, not used.
3120 * @buf: buffer for passing information.
3121 *
3122 * Returns:
3123 * size of formatted string.
3124 **/
3125 static ssize_t
lpfc_oas_lun_state_show(struct device * dev,struct device_attribute * attr,char * buf)3126 lpfc_oas_lun_state_show(struct device *dev, struct device_attribute *attr,
3127 char *buf)
3128 {
3129 struct Scsi_Host *shost = class_to_shost(dev);
3130 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3131
3132 return scnprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_state);
3133 }
3134
3135 /**
3136 * lpfc_oas_lun_state_store - Store the state (enabled or disabled)
3137 * of whether luns will be enabled or disabled
3138 * for Optimized Access Storage (OAS) operations.
3139 * @dev: class device that is converted into a Scsi_host.
3140 * @attr: device attribute, not used.
3141 * @buf: buffer for passing information.
3142 * @count: Size of the data buffer.
3143 *
3144 * Returns:
3145 * -EINVAL count is invalid, invalid wwpn byte invalid
3146 * -EPERM oas is not supported by hba
3147 * value of count on success
3148 **/
3149 static ssize_t
lpfc_oas_lun_state_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3150 lpfc_oas_lun_state_store(struct device *dev, struct device_attribute *attr,
3151 const char *buf, size_t count)
3152 {
3153 struct Scsi_Host *shost = class_to_shost(dev);
3154 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3155 int val = 0;
3156
3157 if (!phba->cfg_fof)
3158 return -EPERM;
3159
3160 if (!isdigit(buf[0]))
3161 return -EINVAL;
3162
3163 if (sscanf(buf, "%i", &val) != 1)
3164 return -EINVAL;
3165
3166 if ((val != 0) && (val != 1))
3167 return -EINVAL;
3168
3169 phba->cfg_oas_lun_state = val;
3170 return strlen(buf);
3171 }
3172 static DEVICE_ATTR(lpfc_xlane_lun_state, S_IRUGO | S_IWUSR,
3173 lpfc_oas_lun_state_show, lpfc_oas_lun_state_store);
3174
3175 /**
3176 * lpfc_oas_lun_status_show - Return the status of the Optimized Access
3177 * Storage (OAS) lun returned by the
3178 * lpfc_oas_lun_show function.
3179 * @dev: class device that is converted into a Scsi_host.
3180 * @attr: device attribute, not used.
3181 * @buf: buffer for passing information.
3182 *
3183 * Returns:
3184 * size of formatted string.
3185 **/
3186 static ssize_t
lpfc_oas_lun_status_show(struct device * dev,struct device_attribute * attr,char * buf)3187 lpfc_oas_lun_status_show(struct device *dev, struct device_attribute *attr,
3188 char *buf)
3189 {
3190 struct Scsi_Host *shost = class_to_shost(dev);
3191 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3192
3193 if (!(phba->cfg_oas_flags & OAS_LUN_VALID))
3194 return -EFAULT;
3195
3196 return scnprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_lun_status);
3197 }
3198 static DEVICE_ATTR(lpfc_xlane_lun_status, S_IRUGO,
3199 lpfc_oas_lun_status_show, NULL);
3200
3201
3202 /**
3203 * lpfc_oas_lun_state_set - enable or disable a lun for Optimized Access Storage
3204 * (OAS) operations.
3205 * @phba: lpfc_hba pointer.
3206 * @vpt_wwpn: wwpn of the vport associated with the returned lun
3207 * @tgt_wwpn: wwpn of the target associated with the returned lun
3208 * @lun: the fc lun for setting oas state.
3209 * @oas_state: the oas state to be set to the lun.
3210 * @pri: priority
3211 *
3212 * Returns:
3213 * SUCCESS : 0
3214 * -EPERM OAS is not enabled or not supported by this port.
3215 *
3216 */
3217 static size_t
lpfc_oas_lun_state_set(struct lpfc_hba * phba,uint8_t vpt_wwpn[],uint8_t tgt_wwpn[],uint64_t lun,uint32_t oas_state,uint8_t pri)3218 lpfc_oas_lun_state_set(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
3219 uint8_t tgt_wwpn[], uint64_t lun,
3220 uint32_t oas_state, uint8_t pri)
3221 {
3222
3223 int rc = 0;
3224
3225 if (!phba->cfg_fof)
3226 return -EPERM;
3227
3228 if (oas_state) {
3229 if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
3230 (struct lpfc_name *)tgt_wwpn,
3231 lun, pri))
3232 rc = -ENOMEM;
3233 } else {
3234 lpfc_disable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
3235 (struct lpfc_name *)tgt_wwpn, lun, pri);
3236 }
3237 return rc;
3238
3239 }
3240
3241 /**
3242 * lpfc_oas_lun_get_next - get the next lun that has been enabled for Optimized
3243 * Access Storage (OAS) operations.
3244 * @phba: lpfc_hba pointer.
3245 * @vpt_wwpn: wwpn of the vport associated with the returned lun
3246 * @tgt_wwpn: wwpn of the target associated with the returned lun
3247 * @lun_status: status of the lun returned lun
3248 * @lun_pri: priority of the lun returned lun
3249 *
3250 * Returns the first or next lun enabled for OAS operations for the vport/target
3251 * specified. If a lun is found, its vport wwpn, target wwpn and status is
3252 * returned. If the lun is not found, NOT_OAS_ENABLED_LUN is returned.
3253 *
3254 * Return:
3255 * lun that is OAS enabled for the vport/target
3256 * NOT_OAS_ENABLED_LUN when no oas enabled lun found.
3257 */
3258 static uint64_t
lpfc_oas_lun_get_next(struct lpfc_hba * phba,uint8_t vpt_wwpn[],uint8_t tgt_wwpn[],uint32_t * lun_status,uint32_t * lun_pri)3259 lpfc_oas_lun_get_next(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
3260 uint8_t tgt_wwpn[], uint32_t *lun_status,
3261 uint32_t *lun_pri)
3262 {
3263 uint64_t found_lun;
3264
3265 if (unlikely(!phba) || !vpt_wwpn || !tgt_wwpn)
3266 return NOT_OAS_ENABLED_LUN;
3267 if (lpfc_find_next_oas_lun(phba, (struct lpfc_name *)
3268 phba->sli4_hba.oas_next_vpt_wwpn,
3269 (struct lpfc_name *)
3270 phba->sli4_hba.oas_next_tgt_wwpn,
3271 &phba->sli4_hba.oas_next_lun,
3272 (struct lpfc_name *)vpt_wwpn,
3273 (struct lpfc_name *)tgt_wwpn,
3274 &found_lun, lun_status, lun_pri))
3275 return found_lun;
3276 else
3277 return NOT_OAS_ENABLED_LUN;
3278 }
3279
3280 /**
3281 * lpfc_oas_lun_state_change - enable/disable a lun for OAS operations
3282 * @phba: lpfc_hba pointer.
3283 * @vpt_wwpn: vport wwpn by reference.
3284 * @tgt_wwpn: target wwpn by reference.
3285 * @lun: the fc lun for setting oas state.
3286 * @oas_state: the oas state to be set to the oas_lun.
3287 * @pri: priority
3288 *
3289 * This routine enables (OAS_LUN_ENABLE) or disables (OAS_LUN_DISABLE)
3290 * a lun for OAS operations.
3291 *
3292 * Return:
3293 * SUCCESS: 0
3294 * -ENOMEM: failed to enable an lun for OAS operations
3295 * -EPERM: OAS is not enabled
3296 */
3297 static ssize_t
lpfc_oas_lun_state_change(struct lpfc_hba * phba,uint8_t vpt_wwpn[],uint8_t tgt_wwpn[],uint64_t lun,uint32_t oas_state,uint8_t pri)3298 lpfc_oas_lun_state_change(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
3299 uint8_t tgt_wwpn[], uint64_t lun,
3300 uint32_t oas_state, uint8_t pri)
3301 {
3302
3303 int rc;
3304
3305 rc = lpfc_oas_lun_state_set(phba, vpt_wwpn, tgt_wwpn, lun,
3306 oas_state, pri);
3307 return rc;
3308 }
3309
3310 /**
3311 * lpfc_oas_lun_show - Return oas enabled luns from a chosen target
3312 * @dev: class device that is converted into a Scsi_host.
3313 * @attr: device attribute, not used.
3314 * @buf: buffer for passing information.
3315 *
3316 * This routine returns a lun enabled for OAS each time the function
3317 * is called.
3318 *
3319 * Returns:
3320 * SUCCESS: size of formatted string.
3321 * -EFAULT: target or vport wwpn was not set properly.
3322 * -EPERM: oas is not enabled.
3323 **/
3324 static ssize_t
lpfc_oas_lun_show(struct device * dev,struct device_attribute * attr,char * buf)3325 lpfc_oas_lun_show(struct device *dev, struct device_attribute *attr,
3326 char *buf)
3327 {
3328 struct Scsi_Host *shost = class_to_shost(dev);
3329 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3330
3331 uint64_t oas_lun;
3332 int len = 0;
3333
3334 if (!phba->cfg_fof)
3335 return -EPERM;
3336
3337 if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
3338 if (!(phba->cfg_oas_flags & OAS_FIND_ANY_VPORT))
3339 return -EFAULT;
3340
3341 if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
3342 if (!(phba->cfg_oas_flags & OAS_FIND_ANY_TARGET))
3343 return -EFAULT;
3344
3345 oas_lun = lpfc_oas_lun_get_next(phba, phba->cfg_oas_vpt_wwpn,
3346 phba->cfg_oas_tgt_wwpn,
3347 &phba->cfg_oas_lun_status,
3348 &phba->cfg_oas_priority);
3349 if (oas_lun != NOT_OAS_ENABLED_LUN)
3350 phba->cfg_oas_flags |= OAS_LUN_VALID;
3351
3352 len += scnprintf(buf + len, PAGE_SIZE-len, "0x%llx", oas_lun);
3353
3354 return len;
3355 }
3356
3357 /**
3358 * lpfc_oas_lun_store - Sets the OAS state for lun
3359 * @dev: class device that is converted into a Scsi_host.
3360 * @attr: device attribute, not used.
3361 * @buf: buffer for passing information.
3362 * @count: size of the formatting string
3363 *
3364 * This function sets the OAS state for lun. Before this function is called,
3365 * the vport wwpn, target wwpn, and oas state need to be set.
3366 *
3367 * Returns:
3368 * SUCCESS: size of formatted string.
3369 * -EFAULT: target or vport wwpn was not set properly.
3370 * -EPERM: oas is not enabled.
3371 * size of formatted string.
3372 **/
3373 static ssize_t
lpfc_oas_lun_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3374 lpfc_oas_lun_store(struct device *dev, struct device_attribute *attr,
3375 const char *buf, size_t count)
3376 {
3377 struct Scsi_Host *shost = class_to_shost(dev);
3378 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3379 uint64_t scsi_lun;
3380 uint32_t pri;
3381 ssize_t rc;
3382
3383 if (!phba->cfg_fof)
3384 return -EPERM;
3385
3386 if (wwn_to_u64(phba->cfg_oas_vpt_wwpn) == 0)
3387 return -EFAULT;
3388
3389 if (wwn_to_u64(phba->cfg_oas_tgt_wwpn) == 0)
3390 return -EFAULT;
3391
3392 if (!isdigit(buf[0]))
3393 return -EINVAL;
3394
3395 if (sscanf(buf, "0x%llx", &scsi_lun) != 1)
3396 return -EINVAL;
3397
3398 pri = phba->cfg_oas_priority;
3399 if (pri == 0)
3400 pri = phba->cfg_XLanePriority;
3401
3402 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3403 "3372 Try to set vport 0x%llx target 0x%llx lun:0x%llx "
3404 "priority 0x%x with oas state %d\n",
3405 wwn_to_u64(phba->cfg_oas_vpt_wwpn),
3406 wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun,
3407 pri, phba->cfg_oas_lun_state);
3408
3409 rc = lpfc_oas_lun_state_change(phba, phba->cfg_oas_vpt_wwpn,
3410 phba->cfg_oas_tgt_wwpn, scsi_lun,
3411 phba->cfg_oas_lun_state, pri);
3412 if (rc)
3413 return rc;
3414
3415 return count;
3416 }
3417 static DEVICE_ATTR(lpfc_xlane_lun, S_IRUGO | S_IWUSR,
3418 lpfc_oas_lun_show, lpfc_oas_lun_store);
3419
3420 int lpfc_enable_nvmet_cnt;
3421 unsigned long long lpfc_enable_nvmet[LPFC_NVMET_MAX_PORTS] = {
3422 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
3423 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
3424 module_param_array(lpfc_enable_nvmet, ullong, &lpfc_enable_nvmet_cnt, 0444);
3425 MODULE_PARM_DESC(lpfc_enable_nvmet, "Enable HBA port(s) WWPN as a NVME Target");
3426
3427 static int lpfc_poll = 0;
3428 module_param(lpfc_poll, int, S_IRUGO);
3429 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
3430 " 0 - none,"
3431 " 1 - poll with interrupts enabled"
3432 " 3 - poll and disable FCP ring interrupts");
3433
3434 static DEVICE_ATTR_RW(lpfc_poll);
3435
3436 int lpfc_no_hba_reset_cnt;
3437 unsigned long lpfc_no_hba_reset[MAX_HBAS_NO_RESET] = {
3438 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
3439 module_param_array(lpfc_no_hba_reset, ulong, &lpfc_no_hba_reset_cnt, 0444);
3440 MODULE_PARM_DESC(lpfc_no_hba_reset, "WWPN of HBAs that should not be reset");
3441
3442 LPFC_ATTR(sli_mode, 3, 3, 3,
3443 "SLI mode selector: 3 - select SLI-3");
3444
3445 LPFC_ATTR_R(enable_npiv, 1, 0, 1,
3446 "Enable NPIV functionality");
3447
3448 LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2,
3449 "FCF Fast failover=1 Priority failover=2");
3450
3451 /*
3452 # lpfc_enable_rrq: Track XRI/OXID reuse after IO failures
3453 # 0x0 = disabled, XRI/OXID use not tracked.
3454 # 0x1 = XRI/OXID reuse is timed with ratov, RRQ sent.
3455 # 0x2 = XRI/OXID reuse is timed with ratov, No RRQ sent.
3456 */
3457 LPFC_ATTR_R(enable_rrq, 2, 0, 2,
3458 "Enable RRQ functionality");
3459
3460 /*
3461 # lpfc_suppress_link_up: Bring link up at initialization
3462 # 0x0 = bring link up (issue MBX_INIT_LINK)
3463 # 0x1 = do NOT bring link up at initialization(MBX_INIT_LINK)
3464 # 0x2 = never bring up link
3465 # Default value is 0.
3466 */
3467 LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK,
3468 LPFC_DELAY_INIT_LINK_INDEFINITELY,
3469 "Suppress Link Up at initialization");
3470
3471 static ssize_t
lpfc_pls_show(struct device * dev,struct device_attribute * attr,char * buf)3472 lpfc_pls_show(struct device *dev, struct device_attribute *attr, char *buf)
3473 {
3474 struct Scsi_Host *shost = class_to_shost(dev);
3475 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3476
3477 return scnprintf(buf, PAGE_SIZE, "%d\n",
3478 phba->sli4_hba.pc_sli4_params.pls);
3479 }
3480 static DEVICE_ATTR(pls, 0444,
3481 lpfc_pls_show, NULL);
3482
3483 static ssize_t
lpfc_pt_show(struct device * dev,struct device_attribute * attr,char * buf)3484 lpfc_pt_show(struct device *dev, struct device_attribute *attr, char *buf)
3485 {
3486 struct Scsi_Host *shost = class_to_shost(dev);
3487 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
3488
3489 return scnprintf(buf, PAGE_SIZE, "%d\n",
3490 (phba->hba_flag & HBA_PERSISTENT_TOPO) ? 1 : 0);
3491 }
3492 static DEVICE_ATTR(pt, 0444,
3493 lpfc_pt_show, NULL);
3494
3495 /*
3496 # lpfc_cnt: Number of IOCBs allocated for ELS, CT, and ABTS
3497 # 1 - (1024)
3498 # 2 - (2048)
3499 # 3 - (3072)
3500 # 4 - (4096)
3501 # 5 - (5120)
3502 */
3503 static ssize_t
lpfc_iocb_hw_show(struct device * dev,struct device_attribute * attr,char * buf)3504 lpfc_iocb_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
3505 {
3506 struct Scsi_Host *shost = class_to_shost(dev);
3507 struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3508
3509 return scnprintf(buf, PAGE_SIZE, "%d\n", phba->iocb_max);
3510 }
3511
3512 static DEVICE_ATTR(iocb_hw, S_IRUGO,
3513 lpfc_iocb_hw_show, NULL);
3514 static ssize_t
lpfc_txq_hw_show(struct device * dev,struct device_attribute * attr,char * buf)3515 lpfc_txq_hw_show(struct device *dev, struct device_attribute *attr, char *buf)
3516 {
3517 struct Scsi_Host *shost = class_to_shost(dev);
3518 struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3519 struct lpfc_sli_ring *pring = lpfc_phba_elsring(phba);
3520
3521 return scnprintf(buf, PAGE_SIZE, "%d\n",
3522 pring ? pring->txq_max : 0);
3523 }
3524
3525 static DEVICE_ATTR(txq_hw, S_IRUGO,
3526 lpfc_txq_hw_show, NULL);
3527 static ssize_t
lpfc_txcmplq_hw_show(struct device * dev,struct device_attribute * attr,char * buf)3528 lpfc_txcmplq_hw_show(struct device *dev, struct device_attribute *attr,
3529 char *buf)
3530 {
3531 struct Scsi_Host *shost = class_to_shost(dev);
3532 struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba;
3533 struct lpfc_sli_ring *pring = lpfc_phba_elsring(phba);
3534
3535 return scnprintf(buf, PAGE_SIZE, "%d\n",
3536 pring ? pring->txcmplq_max : 0);
3537 }
3538
3539 static DEVICE_ATTR(txcmplq_hw, S_IRUGO,
3540 lpfc_txcmplq_hw_show, NULL);
3541
3542 /*
3543 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
3544 # until the timer expires. Value range is [0,255]. Default value is 30.
3545 */
3546 static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
3547 static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO;
3548 module_param(lpfc_nodev_tmo, int, 0);
3549 MODULE_PARM_DESC(lpfc_nodev_tmo,
3550 "Seconds driver will hold I/O waiting "
3551 "for a device to come back");
3552
3553 /**
3554 * lpfc_nodev_tmo_show - Return the hba dev loss timeout value
3555 * @dev: class converted to a Scsi_host structure.
3556 * @attr: device attribute, not used.
3557 * @buf: on return contains the dev loss timeout in decimal.
3558 *
3559 * Returns: size of formatted string.
3560 **/
3561 static ssize_t
lpfc_nodev_tmo_show(struct device * dev,struct device_attribute * attr,char * buf)3562 lpfc_nodev_tmo_show(struct device *dev, struct device_attribute *attr,
3563 char *buf)
3564 {
3565 struct Scsi_Host *shost = class_to_shost(dev);
3566 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3567
3568 return scnprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_devloss_tmo);
3569 }
3570
3571 /**
3572 * lpfc_nodev_tmo_init - Set the hba nodev timeout value
3573 * @vport: lpfc vport structure pointer.
3574 * @val: contains the nodev timeout value.
3575 *
3576 * Description:
3577 * If the devloss tmo is already set then nodev tmo is set to devloss tmo,
3578 * a kernel error message is printed and zero is returned.
3579 * Else if val is in range then nodev tmo and devloss tmo are set to val.
3580 * Otherwise nodev tmo is set to the default value.
3581 *
3582 * Returns:
3583 * zero if already set or if val is in range
3584 * -EINVAL val out of range
3585 **/
3586 static int
lpfc_nodev_tmo_init(struct lpfc_vport * vport,int val)3587 lpfc_nodev_tmo_init(struct lpfc_vport *vport, int val)
3588 {
3589 if (vport->cfg_devloss_tmo != LPFC_DEF_DEVLOSS_TMO) {
3590 vport->cfg_nodev_tmo = vport->cfg_devloss_tmo;
3591 if (val != LPFC_DEF_DEVLOSS_TMO)
3592 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3593 "0407 Ignoring lpfc_nodev_tmo module "
3594 "parameter because lpfc_devloss_tmo "
3595 "is set.\n");
3596 return 0;
3597 }
3598
3599 if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3600 vport->cfg_nodev_tmo = val;
3601 vport->cfg_devloss_tmo = val;
3602 return 0;
3603 }
3604 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3605 "0400 lpfc_nodev_tmo attribute cannot be set to"
3606 " %d, allowed range is [%d, %d]\n",
3607 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3608 vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
3609 return -EINVAL;
3610 }
3611
3612 /**
3613 * lpfc_update_rport_devloss_tmo - Update dev loss tmo value
3614 * @vport: lpfc vport structure pointer.
3615 *
3616 * Description:
3617 * Update all the ndlp's dev loss tmo with the vport devloss tmo value.
3618 **/
3619 static void
lpfc_update_rport_devloss_tmo(struct lpfc_vport * vport)3620 lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport)
3621 {
3622 struct Scsi_Host *shost;
3623 struct lpfc_nodelist *ndlp;
3624 #if (IS_ENABLED(CONFIG_NVME_FC))
3625 struct lpfc_nvme_rport *rport;
3626 struct nvme_fc_remote_port *remoteport = NULL;
3627 #endif
3628
3629 shost = lpfc_shost_from_vport(vport);
3630 spin_lock_irq(shost->host_lock);
3631 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
3632 if (ndlp->rport)
3633 ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo;
3634 #if (IS_ENABLED(CONFIG_NVME_FC))
3635 spin_lock(&ndlp->lock);
3636 rport = lpfc_ndlp_get_nrport(ndlp);
3637 if (rport)
3638 remoteport = rport->remoteport;
3639 spin_unlock(&ndlp->lock);
3640 if (rport && remoteport)
3641 nvme_fc_set_remoteport_devloss(remoteport,
3642 vport->cfg_devloss_tmo);
3643 #endif
3644 }
3645 spin_unlock_irq(shost->host_lock);
3646 }
3647
3648 /**
3649 * lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values
3650 * @vport: lpfc vport structure pointer.
3651 * @val: contains the tmo value.
3652 *
3653 * Description:
3654 * If the devloss tmo is already set or the vport dev loss tmo has changed
3655 * then a kernel error message is printed and zero is returned.
3656 * Else if val is in range then nodev tmo and devloss tmo are set to val.
3657 * Otherwise nodev tmo is set to the default value.
3658 *
3659 * Returns:
3660 * zero if already set or if val is in range
3661 * -EINVAL val out of range
3662 **/
3663 static int
lpfc_nodev_tmo_set(struct lpfc_vport * vport,int val)3664 lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val)
3665 {
3666 if (vport->dev_loss_tmo_changed ||
3667 (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
3668 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3669 "0401 Ignoring change to lpfc_nodev_tmo "
3670 "because lpfc_devloss_tmo is set.\n");
3671 return 0;
3672 }
3673 if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3674 vport->cfg_nodev_tmo = val;
3675 vport->cfg_devloss_tmo = val;
3676 /*
3677 * For compat: set the fc_host dev loss so new rports
3678 * will get the value.
3679 */
3680 fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3681 lpfc_update_rport_devloss_tmo(vport);
3682 return 0;
3683 }
3684 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3685 "0403 lpfc_nodev_tmo attribute cannot be set to "
3686 "%d, allowed range is [%d, %d]\n",
3687 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3688 return -EINVAL;
3689 }
3690
3691 lpfc_vport_param_store(nodev_tmo)
3692
3693 static DEVICE_ATTR_RW(lpfc_nodev_tmo);
3694
3695 /*
3696 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
3697 # disappear until the timer expires. Value range is [0,255]. Default
3698 # value is 30.
3699 */
3700 module_param(lpfc_devloss_tmo, int, S_IRUGO);
3701 MODULE_PARM_DESC(lpfc_devloss_tmo,
3702 "Seconds driver will hold I/O waiting "
3703 "for a device to come back");
lpfc_vport_param_init(devloss_tmo,LPFC_DEF_DEVLOSS_TMO,LPFC_MIN_DEVLOSS_TMO,LPFC_MAX_DEVLOSS_TMO)3704 lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
3705 LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
3706 lpfc_vport_param_show(devloss_tmo)
3707
3708 /**
3709 * lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit
3710 * @vport: lpfc vport structure pointer.
3711 * @val: contains the tmo value.
3712 *
3713 * Description:
3714 * If val is in a valid range then set the vport nodev tmo,
3715 * devloss tmo, also set the vport dev loss tmo changed flag.
3716 * Else a kernel error message is printed.
3717 *
3718 * Returns:
3719 * zero if val is in range
3720 * -EINVAL val out of range
3721 **/
3722 static int
3723 lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val)
3724 {
3725 if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
3726 vport->cfg_nodev_tmo = val;
3727 vport->cfg_devloss_tmo = val;
3728 vport->dev_loss_tmo_changed = 1;
3729 fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val;
3730 lpfc_update_rport_devloss_tmo(vport);
3731 return 0;
3732 }
3733
3734 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3735 "0404 lpfc_devloss_tmo attribute cannot be set to "
3736 "%d, allowed range is [%d, %d]\n",
3737 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
3738 return -EINVAL;
3739 }
3740
3741 lpfc_vport_param_store(devloss_tmo)
3742 static DEVICE_ATTR_RW(lpfc_devloss_tmo);
3743
3744 /*
3745 * lpfc_suppress_rsp: Enable suppress rsp feature is firmware supports it
3746 * lpfc_suppress_rsp = 0 Disable
3747 * lpfc_suppress_rsp = 1 Enable (default)
3748 *
3749 */
3750 LPFC_ATTR_R(suppress_rsp, 1, 0, 1,
3751 "Enable suppress rsp feature is firmware supports it");
3752
3753 /*
3754 * lpfc_nvmet_mrq: Specify number of RQ pairs for processing NVMET cmds
3755 * lpfc_nvmet_mrq = 0 driver will calcualte optimal number of RQ pairs
3756 * lpfc_nvmet_mrq = 1 use a single RQ pair
3757 * lpfc_nvmet_mrq >= 2 use specified RQ pairs for MRQ
3758 *
3759 */
3760 LPFC_ATTR_R(nvmet_mrq,
3761 LPFC_NVMET_MRQ_AUTO, LPFC_NVMET_MRQ_AUTO, LPFC_NVMET_MRQ_MAX,
3762 "Specify number of RQ pairs for processing NVMET cmds");
3763
3764 /*
3765 * lpfc_nvmet_mrq_post: Specify number of RQ buffer to initially post
3766 * to each NVMET RQ. Range 64 to 2048, default is 512.
3767 */
3768 LPFC_ATTR_R(nvmet_mrq_post,
3769 LPFC_NVMET_RQE_DEF_POST, LPFC_NVMET_RQE_MIN_POST,
3770 LPFC_NVMET_RQE_DEF_COUNT,
3771 "Specify number of RQ buffers to initially post");
3772
3773 /*
3774 * lpfc_enable_fc4_type: Defines what FC4 types are supported.
3775 * Supported Values: 1 - register just FCP
3776 * 3 - register both FCP and NVME
3777 * Supported values are [1,3]. Default value is 3
3778 */
3779 LPFC_ATTR_R(enable_fc4_type, LPFC_ENABLE_BOTH,
3780 LPFC_ENABLE_FCP, LPFC_ENABLE_BOTH,
3781 "Enable FC4 Protocol support - FCP / NVME");
3782
3783 /*
3784 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being
3785 # deluged with LOTS of information.
3786 # You can set a bit mask to record specific types of verbose messages:
3787 # See lpfc_logmsh.h for definitions.
3788 */
3789 LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff,
3790 "Verbose logging bit-mask");
3791
3792 /*
3793 # lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters
3794 # objects that have been registered with the nameserver after login.
3795 */
3796 LPFC_VPORT_ATTR_R(enable_da_id, 1, 0, 1,
3797 "Deregister nameserver objects before LOGO");
3798
3799 /*
3800 # lun_queue_depth: This parameter is used to limit the number of outstanding
3801 # commands per FCP LUN.
3802 */
3803 LPFC_VPORT_ATTR_R(lun_queue_depth, 64, 1, 512,
3804 "Max number of FCP commands we can queue to a specific LUN");
3805
3806 /*
3807 # tgt_queue_depth: This parameter is used to limit the number of outstanding
3808 # commands per target port. Value range is [10,65535]. Default value is 65535.
3809 */
3810 static uint lpfc_tgt_queue_depth = LPFC_MAX_TGT_QDEPTH;
3811 module_param(lpfc_tgt_queue_depth, uint, 0444);
3812 MODULE_PARM_DESC(lpfc_tgt_queue_depth, "Set max Target queue depth");
3813 lpfc_vport_param_show(tgt_queue_depth);
3814 lpfc_vport_param_init(tgt_queue_depth, LPFC_MAX_TGT_QDEPTH,
3815 LPFC_MIN_TGT_QDEPTH, LPFC_MAX_TGT_QDEPTH);
3816
3817 /**
3818 * lpfc_tgt_queue_depth_set: Sets an attribute value.
3819 * @vport: lpfc vport structure pointer.
3820 * @val: integer attribute value.
3821 *
3822 * Description: Sets the parameter to the new value.
3823 *
3824 * Returns:
3825 * zero on success
3826 * -EINVAL if val is invalid
3827 */
3828 static int
lpfc_tgt_queue_depth_set(struct lpfc_vport * vport,uint val)3829 lpfc_tgt_queue_depth_set(struct lpfc_vport *vport, uint val)
3830 {
3831 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3832 struct lpfc_nodelist *ndlp;
3833
3834 if (!lpfc_rangecheck(val, LPFC_MIN_TGT_QDEPTH, LPFC_MAX_TGT_QDEPTH))
3835 return -EINVAL;
3836
3837 if (val == vport->cfg_tgt_queue_depth)
3838 return 0;
3839
3840 spin_lock_irq(shost->host_lock);
3841 vport->cfg_tgt_queue_depth = val;
3842
3843 /* Next loop thru nodelist and change cmd_qdepth */
3844 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp)
3845 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
3846
3847 spin_unlock_irq(shost->host_lock);
3848 return 0;
3849 }
3850
3851 lpfc_vport_param_store(tgt_queue_depth);
3852 static DEVICE_ATTR_RW(lpfc_tgt_queue_depth);
3853
3854 /*
3855 # hba_queue_depth: This parameter is used to limit the number of outstanding
3856 # commands per lpfc HBA. Value range is [32,8192]. If this parameter
3857 # value is greater than the maximum number of exchanges supported by the HBA,
3858 # then maximum number of exchanges supported by the HBA is used to determine
3859 # the hba_queue_depth.
3860 */
3861 LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192,
3862 "Max number of FCP commands we can queue to a lpfc HBA");
3863
3864 /*
3865 # peer_port_login: This parameter allows/prevents logins
3866 # between peer ports hosted on the same physical port.
3867 # When this parameter is set 0 peer ports of same physical port
3868 # are not allowed to login to each other.
3869 # When this parameter is set 1 peer ports of same physical port
3870 # are allowed to login to each other.
3871 # Default value of this parameter is 0.
3872 */
3873 LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1,
3874 "Allow peer ports on the same physical port to login to each "
3875 "other.");
3876
3877 /*
3878 # restrict_login: This parameter allows/prevents logins
3879 # between Virtual Ports and remote initiators.
3880 # When this parameter is not set (0) Virtual Ports will accept PLOGIs from
3881 # other initiators and will attempt to PLOGI all remote ports.
3882 # When this parameter is set (1) Virtual Ports will reject PLOGIs from
3883 # remote ports and will not attempt to PLOGI to other initiators.
3884 # This parameter does not restrict to the physical port.
3885 # This parameter does not restrict logins to Fabric resident remote ports.
3886 # Default value of this parameter is 1.
3887 */
3888 static int lpfc_restrict_login = 1;
3889 module_param(lpfc_restrict_login, int, S_IRUGO);
3890 MODULE_PARM_DESC(lpfc_restrict_login,
3891 "Restrict virtual ports login to remote initiators.");
3892 lpfc_vport_param_show(restrict_login);
3893
3894 /**
3895 * lpfc_restrict_login_init - Set the vport restrict login flag
3896 * @vport: lpfc vport structure pointer.
3897 * @val: contains the restrict login value.
3898 *
3899 * Description:
3900 * If val is not in a valid range then log a kernel error message and set
3901 * the vport restrict login to one.
3902 * If the port type is physical clear the restrict login flag and return.
3903 * Else set the restrict login flag to val.
3904 *
3905 * Returns:
3906 * zero if val is in range
3907 * -EINVAL val out of range
3908 **/
3909 static int
lpfc_restrict_login_init(struct lpfc_vport * vport,int val)3910 lpfc_restrict_login_init(struct lpfc_vport *vport, int val)
3911 {
3912 if (val < 0 || val > 1) {
3913 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3914 "0422 lpfc_restrict_login attribute cannot "
3915 "be set to %d, allowed range is [0, 1]\n",
3916 val);
3917 vport->cfg_restrict_login = 1;
3918 return -EINVAL;
3919 }
3920 if (vport->port_type == LPFC_PHYSICAL_PORT) {
3921 vport->cfg_restrict_login = 0;
3922 return 0;
3923 }
3924 vport->cfg_restrict_login = val;
3925 return 0;
3926 }
3927
3928 /**
3929 * lpfc_restrict_login_set - Set the vport restrict login flag
3930 * @vport: lpfc vport structure pointer.
3931 * @val: contains the restrict login value.
3932 *
3933 * Description:
3934 * If val is not in a valid range then log a kernel error message and set
3935 * the vport restrict login to one.
3936 * If the port type is physical and the val is not zero log a kernel
3937 * error message, clear the restrict login flag and return zero.
3938 * Else set the restrict login flag to val.
3939 *
3940 * Returns:
3941 * zero if val is in range
3942 * -EINVAL val out of range
3943 **/
3944 static int
lpfc_restrict_login_set(struct lpfc_vport * vport,int val)3945 lpfc_restrict_login_set(struct lpfc_vport *vport, int val)
3946 {
3947 if (val < 0 || val > 1) {
3948 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3949 "0425 lpfc_restrict_login attribute cannot "
3950 "be set to %d, allowed range is [0, 1]\n",
3951 val);
3952 vport->cfg_restrict_login = 1;
3953 return -EINVAL;
3954 }
3955 if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) {
3956 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
3957 "0468 lpfc_restrict_login must be 0 for "
3958 "Physical ports.\n");
3959 vport->cfg_restrict_login = 0;
3960 return 0;
3961 }
3962 vport->cfg_restrict_login = val;
3963 return 0;
3964 }
3965 lpfc_vport_param_store(restrict_login);
3966 static DEVICE_ATTR_RW(lpfc_restrict_login);
3967
3968 /*
3969 # Some disk devices have a "select ID" or "select Target" capability.
3970 # From a protocol standpoint "select ID" usually means select the
3971 # Fibre channel "ALPA". In the FC-AL Profile there is an "informative
3972 # annex" which contains a table that maps a "select ID" (a number
3973 # between 0 and 7F) to an ALPA. By default, for compatibility with
3974 # older drivers, the lpfc driver scans this table from low ALPA to high
3975 # ALPA.
3976 #
3977 # Turning on the scan-down variable (on = 1, off = 0) will
3978 # cause the lpfc driver to use an inverted table, effectively
3979 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
3980 #
3981 # (Note: This "select ID" functionality is a LOOP ONLY characteristic
3982 # and will not work across a fabric. Also this parameter will take
3983 # effect only in the case when ALPA map is not available.)
3984 */
3985 LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1,
3986 "Start scanning for devices from highest ALPA to lowest");
3987
3988 /*
3989 # lpfc_topology: link topology for init link
3990 # 0x0 = attempt loop mode then point-to-point
3991 # 0x01 = internal loopback mode
3992 # 0x02 = attempt point-to-point mode only
3993 # 0x04 = attempt loop mode only
3994 # 0x06 = attempt point-to-point mode then loop
3995 # Set point-to-point mode if you want to run as an N_Port.
3996 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
3997 # Default value is 0.
3998 */
3999 LPFC_ATTR(topology, 0, 0, 6,
4000 "Select Fibre Channel topology");
4001
4002 /**
4003 * lpfc_topology_store - Set the adapters topology field
4004 * @dev: class device that is converted into a scsi_host.
4005 * @attr:device attribute, not used.
4006 * @buf: buffer for passing information.
4007 * @count: size of the data buffer.
4008 *
4009 * Description:
4010 * If val is in a valid range then set the adapter's topology field and
4011 * issue a lip; if the lip fails reset the topology to the old value.
4012 *
4013 * If the value is not in range log a kernel error message and return an error.
4014 *
4015 * Returns:
4016 * zero if val is in range and lip okay
4017 * non-zero return value from lpfc_issue_lip()
4018 * -EINVAL val out of range
4019 **/
4020 static ssize_t
lpfc_topology_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4021 lpfc_topology_store(struct device *dev, struct device_attribute *attr,
4022 const char *buf, size_t count)
4023 {
4024 struct Scsi_Host *shost = class_to_shost(dev);
4025 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4026 struct lpfc_hba *phba = vport->phba;
4027 int val = 0;
4028 int nolip = 0;
4029 const char *val_buf = buf;
4030 int err;
4031 uint32_t prev_val;
4032
4033 if (!strncmp(buf, "nolip ", strlen("nolip "))) {
4034 nolip = 1;
4035 val_buf = &buf[strlen("nolip ")];
4036 }
4037
4038 if (!isdigit(val_buf[0]))
4039 return -EINVAL;
4040 if (sscanf(val_buf, "%i", &val) != 1)
4041 return -EINVAL;
4042
4043 if (val >= 0 && val <= 6) {
4044 prev_val = phba->cfg_topology;
4045 if (phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G &&
4046 val == 4) {
4047 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4048 "3113 Loop mode not supported at speed %d\n",
4049 val);
4050 return -EINVAL;
4051 }
4052 /*
4053 * The 'topology' is not a configurable parameter if :
4054 * - persistent topology enabled
4055 * - G7/G6 with no private loop support
4056 */
4057
4058 if ((phba->hba_flag & HBA_PERSISTENT_TOPO ||
4059 (!phba->sli4_hba.pc_sli4_params.pls &&
4060 (phba->pcidev->device == PCI_DEVICE_ID_LANCER_G6_FC ||
4061 phba->pcidev->device == PCI_DEVICE_ID_LANCER_G7_FC))) &&
4062 val == 4) {
4063 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4064 "3114 Loop mode not supported\n");
4065 return -EINVAL;
4066 }
4067 phba->cfg_topology = val;
4068 if (nolip)
4069 return strlen(buf);
4070
4071 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4072 "3054 lpfc_topology changed from %d to %d\n",
4073 prev_val, val);
4074 if (prev_val != val && phba->sli_rev == LPFC_SLI_REV4)
4075 phba->fc_topology_changed = 1;
4076 err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
4077 if (err) {
4078 phba->cfg_topology = prev_val;
4079 return -EINVAL;
4080 } else
4081 return strlen(buf);
4082 }
4083 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4084 "%d:0467 lpfc_topology attribute cannot be set to %d, "
4085 "allowed range is [0, 6]\n",
4086 phba->brd_no, val);
4087 return -EINVAL;
4088 }
4089
4090 lpfc_param_show(topology)
4091 static DEVICE_ATTR_RW(lpfc_topology);
4092
4093 /**
4094 * lpfc_static_vport_show: Read callback function for
4095 * lpfc_static_vport sysfs file.
4096 * @dev: Pointer to class device object.
4097 * @attr: device attribute structure.
4098 * @buf: Data buffer.
4099 *
4100 * This function is the read call back function for
4101 * lpfc_static_vport sysfs file. The lpfc_static_vport
4102 * sysfs file report the mageability of the vport.
4103 **/
4104 static ssize_t
lpfc_static_vport_show(struct device * dev,struct device_attribute * attr,char * buf)4105 lpfc_static_vport_show(struct device *dev, struct device_attribute *attr,
4106 char *buf)
4107 {
4108 struct Scsi_Host *shost = class_to_shost(dev);
4109 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4110 if (vport->vport_flag & STATIC_VPORT)
4111 sprintf(buf, "1\n");
4112 else
4113 sprintf(buf, "0\n");
4114
4115 return strlen(buf);
4116 }
4117
4118 /*
4119 * Sysfs attribute to control the statistical data collection.
4120 */
4121 static DEVICE_ATTR_RO(lpfc_static_vport);
4122
4123 /**
4124 * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
4125 * @dev: Pointer to class device.
4126 * @attr: Unused.
4127 * @buf: Data buffer.
4128 * @count: Size of the data buffer.
4129 *
4130 * This function get called when a user write to the lpfc_stat_data_ctrl
4131 * sysfs file. This function parse the command written to the sysfs file
4132 * and take appropriate action. These commands are used for controlling
4133 * driver statistical data collection.
4134 * Following are the command this function handles.
4135 *
4136 * setbucket <bucket_type> <base> <step>
4137 * = Set the latency buckets.
4138 * destroybucket = destroy all the buckets.
4139 * start = start data collection
4140 * stop = stop data collection
4141 * reset = reset the collected data
4142 **/
4143 static ssize_t
lpfc_stat_data_ctrl_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4144 lpfc_stat_data_ctrl_store(struct device *dev, struct device_attribute *attr,
4145 const char *buf, size_t count)
4146 {
4147 struct Scsi_Host *shost = class_to_shost(dev);
4148 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4149 struct lpfc_hba *phba = vport->phba;
4150 #define LPFC_MAX_DATA_CTRL_LEN 1024
4151 static char bucket_data[LPFC_MAX_DATA_CTRL_LEN];
4152 unsigned long i;
4153 char *str_ptr, *token;
4154 struct lpfc_vport **vports;
4155 struct Scsi_Host *v_shost;
4156 char *bucket_type_str, *base_str, *step_str;
4157 unsigned long base, step, bucket_type;
4158
4159 if (!strncmp(buf, "setbucket", strlen("setbucket"))) {
4160 if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1))
4161 return -EINVAL;
4162
4163 strncpy(bucket_data, buf, LPFC_MAX_DATA_CTRL_LEN);
4164 str_ptr = &bucket_data[0];
4165 /* Ignore this token - this is command token */
4166 token = strsep(&str_ptr, "\t ");
4167 if (!token)
4168 return -EINVAL;
4169
4170 bucket_type_str = strsep(&str_ptr, "\t ");
4171 if (!bucket_type_str)
4172 return -EINVAL;
4173
4174 if (!strncmp(bucket_type_str, "linear", strlen("linear")))
4175 bucket_type = LPFC_LINEAR_BUCKET;
4176 else if (!strncmp(bucket_type_str, "power2", strlen("power2")))
4177 bucket_type = LPFC_POWER2_BUCKET;
4178 else
4179 return -EINVAL;
4180
4181 base_str = strsep(&str_ptr, "\t ");
4182 if (!base_str)
4183 return -EINVAL;
4184 base = simple_strtoul(base_str, NULL, 0);
4185
4186 step_str = strsep(&str_ptr, "\t ");
4187 if (!step_str)
4188 return -EINVAL;
4189 step = simple_strtoul(step_str, NULL, 0);
4190 if (!step)
4191 return -EINVAL;
4192
4193 /* Block the data collection for every vport */
4194 vports = lpfc_create_vport_work_array(phba);
4195 if (vports == NULL)
4196 return -ENOMEM;
4197
4198 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4199 v_shost = lpfc_shost_from_vport(vports[i]);
4200 spin_lock_irq(v_shost->host_lock);
4201 /* Block and reset data collection */
4202 vports[i]->stat_data_blocked = 1;
4203 if (vports[i]->stat_data_enabled)
4204 lpfc_vport_reset_stat_data(vports[i]);
4205 spin_unlock_irq(v_shost->host_lock);
4206 }
4207
4208 /* Set the bucket attributes */
4209 phba->bucket_type = bucket_type;
4210 phba->bucket_base = base;
4211 phba->bucket_step = step;
4212
4213 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4214 v_shost = lpfc_shost_from_vport(vports[i]);
4215
4216 /* Unblock data collection */
4217 spin_lock_irq(v_shost->host_lock);
4218 vports[i]->stat_data_blocked = 0;
4219 spin_unlock_irq(v_shost->host_lock);
4220 }
4221 lpfc_destroy_vport_work_array(phba, vports);
4222 return strlen(buf);
4223 }
4224
4225 if (!strncmp(buf, "destroybucket", strlen("destroybucket"))) {
4226 vports = lpfc_create_vport_work_array(phba);
4227 if (vports == NULL)
4228 return -ENOMEM;
4229
4230 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
4231 v_shost = lpfc_shost_from_vport(vports[i]);
4232 spin_lock_irq(shost->host_lock);
4233 vports[i]->stat_data_blocked = 1;
4234 lpfc_free_bucket(vport);
4235 vport->stat_data_enabled = 0;
4236 vports[i]->stat_data_blocked = 0;
4237 spin_unlock_irq(shost->host_lock);
4238 }
4239 lpfc_destroy_vport_work_array(phba, vports);
4240 phba->bucket_type = LPFC_NO_BUCKET;
4241 phba->bucket_base = 0;
4242 phba->bucket_step = 0;
4243 return strlen(buf);
4244 }
4245
4246 if (!strncmp(buf, "start", strlen("start"))) {
4247 /* If no buckets configured return error */
4248 if (phba->bucket_type == LPFC_NO_BUCKET)
4249 return -EINVAL;
4250 spin_lock_irq(shost->host_lock);
4251 if (vport->stat_data_enabled) {
4252 spin_unlock_irq(shost->host_lock);
4253 return strlen(buf);
4254 }
4255 lpfc_alloc_bucket(vport);
4256 vport->stat_data_enabled = 1;
4257 spin_unlock_irq(shost->host_lock);
4258 return strlen(buf);
4259 }
4260
4261 if (!strncmp(buf, "stop", strlen("stop"))) {
4262 spin_lock_irq(shost->host_lock);
4263 if (vport->stat_data_enabled == 0) {
4264 spin_unlock_irq(shost->host_lock);
4265 return strlen(buf);
4266 }
4267 lpfc_free_bucket(vport);
4268 vport->stat_data_enabled = 0;
4269 spin_unlock_irq(shost->host_lock);
4270 return strlen(buf);
4271 }
4272
4273 if (!strncmp(buf, "reset", strlen("reset"))) {
4274 if ((phba->bucket_type == LPFC_NO_BUCKET)
4275 || !vport->stat_data_enabled)
4276 return strlen(buf);
4277 spin_lock_irq(shost->host_lock);
4278 vport->stat_data_blocked = 1;
4279 lpfc_vport_reset_stat_data(vport);
4280 vport->stat_data_blocked = 0;
4281 spin_unlock_irq(shost->host_lock);
4282 return strlen(buf);
4283 }
4284 return -EINVAL;
4285 }
4286
4287
4288 /**
4289 * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file
4290 * @dev: Pointer to class device.
4291 * @attr: Unused.
4292 * @buf: Data buffer.
4293 *
4294 * This function is the read call back function for
4295 * lpfc_stat_data_ctrl sysfs file. This function report the
4296 * current statistical data collection state.
4297 **/
4298 static ssize_t
lpfc_stat_data_ctrl_show(struct device * dev,struct device_attribute * attr,char * buf)4299 lpfc_stat_data_ctrl_show(struct device *dev, struct device_attribute *attr,
4300 char *buf)
4301 {
4302 struct Scsi_Host *shost = class_to_shost(dev);
4303 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4304 struct lpfc_hba *phba = vport->phba;
4305 int index = 0;
4306 int i;
4307 char *bucket_type;
4308 unsigned long bucket_value;
4309
4310 switch (phba->bucket_type) {
4311 case LPFC_LINEAR_BUCKET:
4312 bucket_type = "linear";
4313 break;
4314 case LPFC_POWER2_BUCKET:
4315 bucket_type = "power2";
4316 break;
4317 default:
4318 bucket_type = "No Bucket";
4319 break;
4320 }
4321
4322 sprintf(&buf[index], "Statistical Data enabled :%d, "
4323 "blocked :%d, Bucket type :%s, Bucket base :%d,"
4324 " Bucket step :%d\nLatency Ranges :",
4325 vport->stat_data_enabled, vport->stat_data_blocked,
4326 bucket_type, phba->bucket_base, phba->bucket_step);
4327 index = strlen(buf);
4328 if (phba->bucket_type != LPFC_NO_BUCKET) {
4329 for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
4330 if (phba->bucket_type == LPFC_LINEAR_BUCKET)
4331 bucket_value = phba->bucket_base +
4332 phba->bucket_step * i;
4333 else
4334 bucket_value = phba->bucket_base +
4335 (1 << i) * phba->bucket_step;
4336
4337 if (index + 10 > PAGE_SIZE)
4338 break;
4339 sprintf(&buf[index], "%08ld ", bucket_value);
4340 index = strlen(buf);
4341 }
4342 }
4343 sprintf(&buf[index], "\n");
4344 return strlen(buf);
4345 }
4346
4347 /*
4348 * Sysfs attribute to control the statistical data collection.
4349 */
4350 static DEVICE_ATTR_RW(lpfc_stat_data_ctrl);
4351
4352 /*
4353 * lpfc_drvr_stat_data: sysfs attr to get driver statistical data.
4354 */
4355
4356 /*
4357 * Each Bucket takes 11 characters and 1 new line + 17 bytes WWN
4358 * for each target.
4359 */
4360 #define STAT_DATA_SIZE_PER_TARGET(NUM_BUCKETS) ((NUM_BUCKETS) * 11 + 18)
4361 #define MAX_STAT_DATA_SIZE_PER_TARGET \
4362 STAT_DATA_SIZE_PER_TARGET(LPFC_MAX_BUCKET_COUNT)
4363
4364
4365 /**
4366 * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
4367 * @filp: sysfs file
4368 * @kobj: Pointer to the kernel object
4369 * @bin_attr: Attribute object
4370 * @buf: Buffer pointer
4371 * @off: File offset
4372 * @count: Buffer size
4373 *
4374 * This function is the read call back function for lpfc_drvr_stat_data
4375 * sysfs file. This function export the statistical data to user
4376 * applications.
4377 **/
4378 static ssize_t
sysfs_drvr_stat_data_read(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)4379 sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
4380 struct bin_attribute *bin_attr,
4381 char *buf, loff_t off, size_t count)
4382 {
4383 struct device *dev = container_of(kobj, struct device,
4384 kobj);
4385 struct Scsi_Host *shost = class_to_shost(dev);
4386 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4387 struct lpfc_hba *phba = vport->phba;
4388 int i = 0, index = 0;
4389 unsigned long nport_index;
4390 struct lpfc_nodelist *ndlp = NULL;
4391 nport_index = (unsigned long)off /
4392 MAX_STAT_DATA_SIZE_PER_TARGET;
4393
4394 if (!vport->stat_data_enabled || vport->stat_data_blocked
4395 || (phba->bucket_type == LPFC_NO_BUCKET))
4396 return 0;
4397
4398 spin_lock_irq(shost->host_lock);
4399 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
4400 if (!ndlp->lat_data)
4401 continue;
4402
4403 if (nport_index > 0) {
4404 nport_index--;
4405 continue;
4406 }
4407
4408 if ((index + MAX_STAT_DATA_SIZE_PER_TARGET)
4409 > count)
4410 break;
4411
4412 if (!ndlp->lat_data)
4413 continue;
4414
4415 /* Print the WWN */
4416 sprintf(&buf[index], "%02x%02x%02x%02x%02x%02x%02x%02x:",
4417 ndlp->nlp_portname.u.wwn[0],
4418 ndlp->nlp_portname.u.wwn[1],
4419 ndlp->nlp_portname.u.wwn[2],
4420 ndlp->nlp_portname.u.wwn[3],
4421 ndlp->nlp_portname.u.wwn[4],
4422 ndlp->nlp_portname.u.wwn[5],
4423 ndlp->nlp_portname.u.wwn[6],
4424 ndlp->nlp_portname.u.wwn[7]);
4425
4426 index = strlen(buf);
4427
4428 for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
4429 sprintf(&buf[index], "%010u,",
4430 ndlp->lat_data[i].cmd_count);
4431 index = strlen(buf);
4432 }
4433 sprintf(&buf[index], "\n");
4434 index = strlen(buf);
4435 }
4436 spin_unlock_irq(shost->host_lock);
4437 return index;
4438 }
4439
4440 static struct bin_attribute sysfs_drvr_stat_data_attr = {
4441 .attr = {
4442 .name = "lpfc_drvr_stat_data",
4443 .mode = S_IRUSR,
4444 },
4445 .size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET,
4446 .read = sysfs_drvr_stat_data_read,
4447 .write = NULL,
4448 };
4449
4450 /*
4451 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
4452 # connection.
4453 # Value range is [0,16]. Default value is 0.
4454 */
4455 /**
4456 * lpfc_link_speed_store - Set the adapters link speed
4457 * @dev: Pointer to class device.
4458 * @attr: Unused.
4459 * @buf: Data buffer.
4460 * @count: Size of the data buffer.
4461 *
4462 * Description:
4463 * If val is in a valid range then set the adapter's link speed field and
4464 * issue a lip; if the lip fails reset the link speed to the old value.
4465 *
4466 * Notes:
4467 * If the value is not in range log a kernel error message and return an error.
4468 *
4469 * Returns:
4470 * zero if val is in range and lip okay.
4471 * non-zero return value from lpfc_issue_lip()
4472 * -EINVAL val out of range
4473 **/
4474 static ssize_t
lpfc_link_speed_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4475 lpfc_link_speed_store(struct device *dev, struct device_attribute *attr,
4476 const char *buf, size_t count)
4477 {
4478 struct Scsi_Host *shost = class_to_shost(dev);
4479 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4480 struct lpfc_hba *phba = vport->phba;
4481 int val = LPFC_USER_LINK_SPEED_AUTO;
4482 int nolip = 0;
4483 const char *val_buf = buf;
4484 int err;
4485 uint32_t prev_val, if_type;
4486
4487 if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
4488 if (if_type >= LPFC_SLI_INTF_IF_TYPE_2 &&
4489 phba->hba_flag & HBA_FORCED_LINK_SPEED)
4490 return -EPERM;
4491
4492 if (!strncmp(buf, "nolip ", strlen("nolip "))) {
4493 nolip = 1;
4494 val_buf = &buf[strlen("nolip ")];
4495 }
4496
4497 if (!isdigit(val_buf[0]))
4498 return -EINVAL;
4499 if (sscanf(val_buf, "%i", &val) != 1)
4500 return -EINVAL;
4501
4502 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT,
4503 "3055 lpfc_link_speed changed from %d to %d %s\n",
4504 phba->cfg_link_speed, val, nolip ? "(nolip)" : "(lip)");
4505
4506 if (((val == LPFC_USER_LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) ||
4507 ((val == LPFC_USER_LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) ||
4508 ((val == LPFC_USER_LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) ||
4509 ((val == LPFC_USER_LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) ||
4510 ((val == LPFC_USER_LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)) ||
4511 ((val == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb)) ||
4512 ((val == LPFC_USER_LINK_SPEED_32G) && !(phba->lmt & LMT_32Gb)) ||
4513 ((val == LPFC_USER_LINK_SPEED_64G) && !(phba->lmt & LMT_64Gb))) {
4514 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4515 "2879 lpfc_link_speed attribute cannot be set "
4516 "to %d. Speed is not supported by this port.\n",
4517 val);
4518 return -EINVAL;
4519 }
4520 if (val >= LPFC_USER_LINK_SPEED_16G &&
4521 phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
4522 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4523 "3112 lpfc_link_speed attribute cannot be set "
4524 "to %d. Speed is not supported in loop mode.\n",
4525 val);
4526 return -EINVAL;
4527 }
4528
4529 switch (val) {
4530 case LPFC_USER_LINK_SPEED_AUTO:
4531 case LPFC_USER_LINK_SPEED_1G:
4532 case LPFC_USER_LINK_SPEED_2G:
4533 case LPFC_USER_LINK_SPEED_4G:
4534 case LPFC_USER_LINK_SPEED_8G:
4535 case LPFC_USER_LINK_SPEED_16G:
4536 case LPFC_USER_LINK_SPEED_32G:
4537 case LPFC_USER_LINK_SPEED_64G:
4538 prev_val = phba->cfg_link_speed;
4539 phba->cfg_link_speed = val;
4540 if (nolip)
4541 return strlen(buf);
4542
4543 err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport));
4544 if (err) {
4545 phba->cfg_link_speed = prev_val;
4546 return -EINVAL;
4547 }
4548 return strlen(buf);
4549 default:
4550 break;
4551 }
4552
4553 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4554 "0469 lpfc_link_speed attribute cannot be set to %d, "
4555 "allowed values are [%s]\n",
4556 val, LPFC_LINK_SPEED_STRING);
4557 return -EINVAL;
4558
4559 }
4560
4561 static int lpfc_link_speed = 0;
4562 module_param(lpfc_link_speed, int, S_IRUGO);
4563 MODULE_PARM_DESC(lpfc_link_speed, "Select link speed");
lpfc_param_show(link_speed)4564 lpfc_param_show(link_speed)
4565
4566 /**
4567 * lpfc_link_speed_init - Set the adapters link speed
4568 * @phba: lpfc_hba pointer.
4569 * @val: link speed value.
4570 *
4571 * Description:
4572 * If val is in a valid range then set the adapter's link speed field.
4573 *
4574 * Notes:
4575 * If the value is not in range log a kernel error message, clear the link
4576 * speed and return an error.
4577 *
4578 * Returns:
4579 * zero if val saved.
4580 * -EINVAL val out of range
4581 **/
4582 static int
4583 lpfc_link_speed_init(struct lpfc_hba *phba, int val)
4584 {
4585 if (val >= LPFC_USER_LINK_SPEED_16G && phba->cfg_topology == 4) {
4586 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4587 "3111 lpfc_link_speed of %d cannot "
4588 "support loop mode, setting topology to default.\n",
4589 val);
4590 phba->cfg_topology = 0;
4591 }
4592
4593 switch (val) {
4594 case LPFC_USER_LINK_SPEED_AUTO:
4595 case LPFC_USER_LINK_SPEED_1G:
4596 case LPFC_USER_LINK_SPEED_2G:
4597 case LPFC_USER_LINK_SPEED_4G:
4598 case LPFC_USER_LINK_SPEED_8G:
4599 case LPFC_USER_LINK_SPEED_16G:
4600 case LPFC_USER_LINK_SPEED_32G:
4601 case LPFC_USER_LINK_SPEED_64G:
4602 phba->cfg_link_speed = val;
4603 return 0;
4604 default:
4605 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4606 "0405 lpfc_link_speed attribute cannot "
4607 "be set to %d, allowed values are "
4608 "["LPFC_LINK_SPEED_STRING"]\n", val);
4609 phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
4610 return -EINVAL;
4611 }
4612 }
4613
4614 static DEVICE_ATTR_RW(lpfc_link_speed);
4615
4616 /*
4617 # lpfc_aer_support: Support PCIe device Advanced Error Reporting (AER)
4618 # 0 = aer disabled or not supported
4619 # 1 = aer supported and enabled (default)
4620 # Value range is [0,1]. Default value is 1.
4621 */
4622 LPFC_ATTR(aer_support, 1, 0, 1,
4623 "Enable PCIe device AER support");
lpfc_param_show(aer_support)4624 lpfc_param_show(aer_support)
4625
4626 /**
4627 * lpfc_aer_support_store - Set the adapter for aer support
4628 *
4629 * @dev: class device that is converted into a Scsi_host.
4630 * @attr: device attribute, not used.
4631 * @buf: containing enable or disable aer flag.
4632 * @count: unused variable.
4633 *
4634 * Description:
4635 * If the val is 1 and currently the device's AER capability was not
4636 * enabled, invoke the kernel's enable AER helper routine, trying to
4637 * enable the device's AER capability. If the helper routine enabling
4638 * AER returns success, update the device's cfg_aer_support flag to
4639 * indicate AER is supported by the device; otherwise, if the device
4640 * AER capability is already enabled to support AER, then do nothing.
4641 *
4642 * If the val is 0 and currently the device's AER support was enabled,
4643 * invoke the kernel's disable AER helper routine. After that, update
4644 * the device's cfg_aer_support flag to indicate AER is not supported
4645 * by the device; otherwise, if the device AER capability is already
4646 * disabled from supporting AER, then do nothing.
4647 *
4648 * Returns:
4649 * length of the buf on success if val is in range the intended mode
4650 * is supported.
4651 * -EINVAL if val out of range or intended mode is not supported.
4652 **/
4653 static ssize_t
4654 lpfc_aer_support_store(struct device *dev, struct device_attribute *attr,
4655 const char *buf, size_t count)
4656 {
4657 struct Scsi_Host *shost = class_to_shost(dev);
4658 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4659 struct lpfc_hba *phba = vport->phba;
4660 int val = 0, rc = -EINVAL;
4661
4662 if (!isdigit(buf[0]))
4663 return -EINVAL;
4664 if (sscanf(buf, "%i", &val) != 1)
4665 return -EINVAL;
4666
4667 switch (val) {
4668 case 0:
4669 if (phba->hba_flag & HBA_AER_ENABLED) {
4670 rc = pci_disable_pcie_error_reporting(phba->pcidev);
4671 if (!rc) {
4672 spin_lock_irq(&phba->hbalock);
4673 phba->hba_flag &= ~HBA_AER_ENABLED;
4674 spin_unlock_irq(&phba->hbalock);
4675 phba->cfg_aer_support = 0;
4676 rc = strlen(buf);
4677 } else
4678 rc = -EPERM;
4679 } else {
4680 phba->cfg_aer_support = 0;
4681 rc = strlen(buf);
4682 }
4683 break;
4684 case 1:
4685 if (!(phba->hba_flag & HBA_AER_ENABLED)) {
4686 rc = pci_enable_pcie_error_reporting(phba->pcidev);
4687 if (!rc) {
4688 spin_lock_irq(&phba->hbalock);
4689 phba->hba_flag |= HBA_AER_ENABLED;
4690 spin_unlock_irq(&phba->hbalock);
4691 phba->cfg_aer_support = 1;
4692 rc = strlen(buf);
4693 } else
4694 rc = -EPERM;
4695 } else {
4696 phba->cfg_aer_support = 1;
4697 rc = strlen(buf);
4698 }
4699 break;
4700 default:
4701 rc = -EINVAL;
4702 break;
4703 }
4704 return rc;
4705 }
4706
4707 static DEVICE_ATTR_RW(lpfc_aer_support);
4708
4709 /**
4710 * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled device
4711 * @dev: class device that is converted into a Scsi_host.
4712 * @attr: device attribute, not used.
4713 * @buf: containing flag 1 for aer cleanup state.
4714 * @count: unused variable.
4715 *
4716 * Description:
4717 * If the @buf contains 1 and the device currently has the AER support
4718 * enabled, then invokes the kernel AER helper routine
4719 * pci_aer_clear_nonfatal_status() to clean up the uncorrectable
4720 * error status register.
4721 *
4722 * Notes:
4723 *
4724 * Returns:
4725 * -EINVAL if the buf does not contain the 1 or the device is not currently
4726 * enabled with the AER support.
4727 **/
4728 static ssize_t
lpfc_aer_cleanup_state(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4729 lpfc_aer_cleanup_state(struct device *dev, struct device_attribute *attr,
4730 const char *buf, size_t count)
4731 {
4732 struct Scsi_Host *shost = class_to_shost(dev);
4733 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
4734 struct lpfc_hba *phba = vport->phba;
4735 int val, rc = -1;
4736
4737 if (!isdigit(buf[0]))
4738 return -EINVAL;
4739 if (sscanf(buf, "%i", &val) != 1)
4740 return -EINVAL;
4741 if (val != 1)
4742 return -EINVAL;
4743
4744 if (phba->hba_flag & HBA_AER_ENABLED)
4745 rc = pci_aer_clear_nonfatal_status(phba->pcidev);
4746
4747 if (rc == 0)
4748 return strlen(buf);
4749 else
4750 return -EPERM;
4751 }
4752
4753 static DEVICE_ATTR(lpfc_aer_state_cleanup, S_IWUSR, NULL,
4754 lpfc_aer_cleanup_state);
4755
4756 /**
4757 * lpfc_sriov_nr_virtfn_store - Enable the adapter for sr-iov virtual functions
4758 *
4759 * @dev: class device that is converted into a Scsi_host.
4760 * @attr: device attribute, not used.
4761 * @buf: containing the string the number of vfs to be enabled.
4762 * @count: unused variable.
4763 *
4764 * Description:
4765 * When this api is called either through user sysfs, the driver shall
4766 * try to enable or disable SR-IOV virtual functions according to the
4767 * following:
4768 *
4769 * If zero virtual function has been enabled to the physical function,
4770 * the driver shall invoke the pci enable virtual function api trying
4771 * to enable the virtual functions. If the nr_vfn provided is greater
4772 * than the maximum supported, the maximum virtual function number will
4773 * be used for invoking the api; otherwise, the nr_vfn provided shall
4774 * be used for invoking the api. If the api call returned success, the
4775 * actual number of virtual functions enabled will be set to the driver
4776 * cfg_sriov_nr_virtfn; otherwise, -EINVAL shall be returned and driver
4777 * cfg_sriov_nr_virtfn remains zero.
4778 *
4779 * If none-zero virtual functions have already been enabled to the
4780 * physical function, as reflected by the driver's cfg_sriov_nr_virtfn,
4781 * -EINVAL will be returned and the driver does nothing;
4782 *
4783 * If the nr_vfn provided is zero and none-zero virtual functions have
4784 * been enabled, as indicated by the driver's cfg_sriov_nr_virtfn, the
4785 * disabling virtual function api shall be invoded to disable all the
4786 * virtual functions and driver's cfg_sriov_nr_virtfn shall be set to
4787 * zero. Otherwise, if zero virtual function has been enabled, do
4788 * nothing.
4789 *
4790 * Returns:
4791 * length of the buf on success if val is in range the intended mode
4792 * is supported.
4793 * -EINVAL if val out of range or intended mode is not supported.
4794 **/
4795 static ssize_t
lpfc_sriov_nr_virtfn_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4796 lpfc_sriov_nr_virtfn_store(struct device *dev, struct device_attribute *attr,
4797 const char *buf, size_t count)
4798 {
4799 struct Scsi_Host *shost = class_to_shost(dev);
4800 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4801 struct lpfc_hba *phba = vport->phba;
4802 struct pci_dev *pdev = phba->pcidev;
4803 int val = 0, rc = -EINVAL;
4804
4805 /* Sanity check on user data */
4806 if (!isdigit(buf[0]))
4807 return -EINVAL;
4808 if (sscanf(buf, "%i", &val) != 1)
4809 return -EINVAL;
4810 if (val < 0)
4811 return -EINVAL;
4812
4813 /* Request disabling virtual functions */
4814 if (val == 0) {
4815 if (phba->cfg_sriov_nr_virtfn > 0) {
4816 pci_disable_sriov(pdev);
4817 phba->cfg_sriov_nr_virtfn = 0;
4818 }
4819 return strlen(buf);
4820 }
4821
4822 /* Request enabling virtual functions */
4823 if (phba->cfg_sriov_nr_virtfn > 0) {
4824 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4825 "3018 There are %d virtual functions "
4826 "enabled on physical function.\n",
4827 phba->cfg_sriov_nr_virtfn);
4828 return -EEXIST;
4829 }
4830
4831 if (val <= LPFC_MAX_VFN_PER_PFN)
4832 phba->cfg_sriov_nr_virtfn = val;
4833 else {
4834 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4835 "3019 Enabling %d virtual functions is not "
4836 "allowed.\n", val);
4837 return -EINVAL;
4838 }
4839
4840 rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn);
4841 if (rc) {
4842 phba->cfg_sriov_nr_virtfn = 0;
4843 rc = -EPERM;
4844 } else
4845 rc = strlen(buf);
4846
4847 return rc;
4848 }
4849
4850 LPFC_ATTR(sriov_nr_virtfn, LPFC_DEF_VFN_PER_PFN, 0, LPFC_MAX_VFN_PER_PFN,
4851 "Enable PCIe device SR-IOV virtual fn");
4852
4853 lpfc_param_show(sriov_nr_virtfn)
4854 static DEVICE_ATTR_RW(lpfc_sriov_nr_virtfn);
4855
4856 /**
4857 * lpfc_request_firmware_upgrade_store - Request for Linux generic firmware upgrade
4858 *
4859 * @dev: class device that is converted into a Scsi_host.
4860 * @attr: device attribute, not used.
4861 * @buf: containing the string the number of vfs to be enabled.
4862 * @count: unused variable.
4863 *
4864 * Description:
4865 *
4866 * Returns:
4867 * length of the buf on success if val is in range the intended mode
4868 * is supported.
4869 * -EINVAL if val out of range or intended mode is not supported.
4870 **/
4871 static ssize_t
lpfc_request_firmware_upgrade_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4872 lpfc_request_firmware_upgrade_store(struct device *dev,
4873 struct device_attribute *attr,
4874 const char *buf, size_t count)
4875 {
4876 struct Scsi_Host *shost = class_to_shost(dev);
4877 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4878 struct lpfc_hba *phba = vport->phba;
4879 int val = 0, rc;
4880
4881 /* Sanity check on user data */
4882 if (!isdigit(buf[0]))
4883 return -EINVAL;
4884 if (sscanf(buf, "%i", &val) != 1)
4885 return -EINVAL;
4886 if (val != 1)
4887 return -EINVAL;
4888
4889 rc = lpfc_sli4_request_firmware_update(phba, RUN_FW_UPGRADE);
4890 if (rc)
4891 rc = -EPERM;
4892 else
4893 rc = strlen(buf);
4894 return rc;
4895 }
4896
4897 static int lpfc_req_fw_upgrade;
4898 module_param(lpfc_req_fw_upgrade, int, S_IRUGO|S_IWUSR);
4899 MODULE_PARM_DESC(lpfc_req_fw_upgrade, "Enable Linux generic firmware upgrade");
lpfc_param_show(request_firmware_upgrade)4900 lpfc_param_show(request_firmware_upgrade)
4901
4902 /**
4903 * lpfc_request_firmware_upgrade_init - Enable initial linux generic fw upgrade
4904 * @phba: lpfc_hba pointer.
4905 * @val: 0 or 1.
4906 *
4907 * Description:
4908 * Set the initial Linux generic firmware upgrade enable or disable flag.
4909 *
4910 * Returns:
4911 * zero if val saved.
4912 * -EINVAL val out of range
4913 **/
4914 static int
4915 lpfc_request_firmware_upgrade_init(struct lpfc_hba *phba, int val)
4916 {
4917 if (val >= 0 && val <= 1) {
4918 phba->cfg_request_firmware_upgrade = val;
4919 return 0;
4920 }
4921 return -EINVAL;
4922 }
4923 static DEVICE_ATTR(lpfc_req_fw_upgrade, S_IRUGO | S_IWUSR,
4924 lpfc_request_firmware_upgrade_show,
4925 lpfc_request_firmware_upgrade_store);
4926
4927 /**
4928 * lpfc_force_rscn_store
4929 *
4930 * @dev: class device that is converted into a Scsi_host.
4931 * @attr: device attribute, not used.
4932 * @buf: unused string
4933 * @count: unused variable.
4934 *
4935 * Description:
4936 * Force the switch to send a RSCN to all other NPorts in our zone
4937 * If we are direct connect pt2pt, build the RSCN command ourself
4938 * and send to the other NPort. Not supported for private loop.
4939 *
4940 * Returns:
4941 * 0 - on success
4942 * -EIO - if command is not sent
4943 **/
4944 static ssize_t
lpfc_force_rscn_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4945 lpfc_force_rscn_store(struct device *dev, struct device_attribute *attr,
4946 const char *buf, size_t count)
4947 {
4948 struct Scsi_Host *shost = class_to_shost(dev);
4949 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
4950 int i;
4951
4952 i = lpfc_issue_els_rscn(vport, 0);
4953 if (i)
4954 return -EIO;
4955 return strlen(buf);
4956 }
4957
4958 /*
4959 * lpfc_force_rscn: Force an RSCN to be sent to all remote NPorts
4960 * connected to the HBA.
4961 *
4962 * Value range is any ascii value
4963 */
4964 static int lpfc_force_rscn;
4965 module_param(lpfc_force_rscn, int, 0644);
4966 MODULE_PARM_DESC(lpfc_force_rscn,
4967 "Force an RSCN to be sent to all remote NPorts");
lpfc_param_show(force_rscn)4968 lpfc_param_show(force_rscn)
4969
4970 /**
4971 * lpfc_force_rscn_init - Force an RSCN to be sent to all remote NPorts
4972 * @phba: lpfc_hba pointer.
4973 * @val: unused value.
4974 *
4975 * Returns:
4976 * zero if val saved.
4977 **/
4978 static int
4979 lpfc_force_rscn_init(struct lpfc_hba *phba, int val)
4980 {
4981 return 0;
4982 }
4983 static DEVICE_ATTR_RW(lpfc_force_rscn);
4984
4985 /**
4986 * lpfc_fcp_imax_store
4987 *
4988 * @dev: class device that is converted into a Scsi_host.
4989 * @attr: device attribute, not used.
4990 * @buf: string with the number of fast-path FCP interrupts per second.
4991 * @count: unused variable.
4992 *
4993 * Description:
4994 * If val is in a valid range [636,651042], then set the adapter's
4995 * maximum number of fast-path FCP interrupts per second.
4996 *
4997 * Returns:
4998 * length of the buf on success if val is in range the intended mode
4999 * is supported.
5000 * -EINVAL if val out of range or intended mode is not supported.
5001 **/
5002 static ssize_t
lpfc_fcp_imax_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)5003 lpfc_fcp_imax_store(struct device *dev, struct device_attribute *attr,
5004 const char *buf, size_t count)
5005 {
5006 struct Scsi_Host *shost = class_to_shost(dev);
5007 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5008 struct lpfc_hba *phba = vport->phba;
5009 struct lpfc_eq_intr_info *eqi;
5010 uint32_t usdelay;
5011 int val = 0, i;
5012
5013 /* fcp_imax is only valid for SLI4 */
5014 if (phba->sli_rev != LPFC_SLI_REV4)
5015 return -EINVAL;
5016
5017 /* Sanity check on user data */
5018 if (!isdigit(buf[0]))
5019 return -EINVAL;
5020 if (sscanf(buf, "%i", &val) != 1)
5021 return -EINVAL;
5022
5023 /*
5024 * Value range for the HBA is [5000,5000000]
5025 * The value for each EQ depends on how many EQs are configured.
5026 * Allow value == 0
5027 */
5028 if (val && (val < LPFC_MIN_IMAX || val > LPFC_MAX_IMAX))
5029 return -EINVAL;
5030
5031 phba->cfg_auto_imax = (val) ? 0 : 1;
5032 if (phba->cfg_fcp_imax && !val) {
5033 queue_delayed_work(phba->wq, &phba->eq_delay_work,
5034 msecs_to_jiffies(LPFC_EQ_DELAY_MSECS));
5035
5036 for_each_present_cpu(i) {
5037 eqi = per_cpu_ptr(phba->sli4_hba.eq_info, i);
5038 eqi->icnt = 0;
5039 }
5040 }
5041
5042 phba->cfg_fcp_imax = (uint32_t)val;
5043
5044 if (phba->cfg_fcp_imax)
5045 usdelay = LPFC_SEC_TO_USEC / phba->cfg_fcp_imax;
5046 else
5047 usdelay = 0;
5048
5049 for (i = 0; i < phba->cfg_irq_chann; i += LPFC_MAX_EQ_DELAY_EQID_CNT)
5050 lpfc_modify_hba_eq_delay(phba, i, LPFC_MAX_EQ_DELAY_EQID_CNT,
5051 usdelay);
5052
5053 return strlen(buf);
5054 }
5055
5056 /*
5057 # lpfc_fcp_imax: The maximum number of fast-path FCP interrupts per second
5058 # for the HBA.
5059 #
5060 # Value range is [5,000 to 5,000,000]. Default value is 50,000.
5061 */
5062 static int lpfc_fcp_imax = LPFC_DEF_IMAX;
5063 module_param(lpfc_fcp_imax, int, S_IRUGO|S_IWUSR);
5064 MODULE_PARM_DESC(lpfc_fcp_imax,
5065 "Set the maximum number of FCP interrupts per second per HBA");
lpfc_param_show(fcp_imax)5066 lpfc_param_show(fcp_imax)
5067
5068 /**
5069 * lpfc_fcp_imax_init - Set the initial sr-iov virtual function enable
5070 * @phba: lpfc_hba pointer.
5071 * @val: link speed value.
5072 *
5073 * Description:
5074 * If val is in a valid range [636,651042], then initialize the adapter's
5075 * maximum number of fast-path FCP interrupts per second.
5076 *
5077 * Returns:
5078 * zero if val saved.
5079 * -EINVAL val out of range
5080 **/
5081 static int
5082 lpfc_fcp_imax_init(struct lpfc_hba *phba, int val)
5083 {
5084 if (phba->sli_rev != LPFC_SLI_REV4) {
5085 phba->cfg_fcp_imax = 0;
5086 return 0;
5087 }
5088
5089 if ((val >= LPFC_MIN_IMAX && val <= LPFC_MAX_IMAX) ||
5090 (val == 0)) {
5091 phba->cfg_fcp_imax = val;
5092 return 0;
5093 }
5094
5095 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5096 "3016 lpfc_fcp_imax: %d out of range, using default\n",
5097 val);
5098 phba->cfg_fcp_imax = LPFC_DEF_IMAX;
5099
5100 return 0;
5101 }
5102
5103 static DEVICE_ATTR_RW(lpfc_fcp_imax);
5104
5105 /**
5106 * lpfc_cq_max_proc_limit_store
5107 *
5108 * @dev: class device that is converted into a Scsi_host.
5109 * @attr: device attribute, not used.
5110 * @buf: string with the cq max processing limit of cqes
5111 * @count: unused variable.
5112 *
5113 * Description:
5114 * If val is in a valid range, then set value on each cq
5115 *
5116 * Returns:
5117 * The length of the buf: if successful
5118 * -ERANGE: if val is not in the valid range
5119 * -EINVAL: if bad value format or intended mode is not supported.
5120 **/
5121 static ssize_t
lpfc_cq_max_proc_limit_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)5122 lpfc_cq_max_proc_limit_store(struct device *dev, struct device_attribute *attr,
5123 const char *buf, size_t count)
5124 {
5125 struct Scsi_Host *shost = class_to_shost(dev);
5126 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5127 struct lpfc_hba *phba = vport->phba;
5128 struct lpfc_queue *eq, *cq;
5129 unsigned long val;
5130 int i;
5131
5132 /* cq_max_proc_limit is only valid for SLI4 */
5133 if (phba->sli_rev != LPFC_SLI_REV4)
5134 return -EINVAL;
5135
5136 /* Sanity check on user data */
5137 if (!isdigit(buf[0]))
5138 return -EINVAL;
5139 if (kstrtoul(buf, 0, &val))
5140 return -EINVAL;
5141
5142 if (val < LPFC_CQ_MIN_PROC_LIMIT || val > LPFC_CQ_MAX_PROC_LIMIT)
5143 return -ERANGE;
5144
5145 phba->cfg_cq_max_proc_limit = (uint32_t)val;
5146
5147 /* set the values on the cq's */
5148 for (i = 0; i < phba->cfg_irq_chann; i++) {
5149 /* Get the EQ corresponding to the IRQ vector */
5150 eq = phba->sli4_hba.hba_eq_hdl[i].eq;
5151 if (!eq)
5152 continue;
5153
5154 list_for_each_entry(cq, &eq->child_list, list)
5155 cq->max_proc_limit = min(phba->cfg_cq_max_proc_limit,
5156 cq->entry_count);
5157 }
5158
5159 return strlen(buf);
5160 }
5161
5162 /*
5163 * lpfc_cq_max_proc_limit: The maximum number CQE entries processed in an
5164 * itteration of CQ processing.
5165 */
5166 static int lpfc_cq_max_proc_limit = LPFC_CQ_DEF_MAX_PROC_LIMIT;
5167 module_param(lpfc_cq_max_proc_limit, int, 0644);
5168 MODULE_PARM_DESC(lpfc_cq_max_proc_limit,
5169 "Set the maximum number CQEs processed in an iteration of "
5170 "CQ processing");
5171 lpfc_param_show(cq_max_proc_limit)
5172
5173 /*
5174 * lpfc_cq_poll_threshold: Set the threshold of CQE completions in a
5175 * single handler call which should request a polled completion rather
5176 * than re-enabling interrupts.
5177 */
5178 LPFC_ATTR_RW(cq_poll_threshold, LPFC_CQ_DEF_THRESHOLD_TO_POLL,
5179 LPFC_CQ_MIN_THRESHOLD_TO_POLL,
5180 LPFC_CQ_MAX_THRESHOLD_TO_POLL,
5181 "CQE Processing Threshold to enable Polling");
5182
5183 /**
5184 * lpfc_cq_max_proc_limit_init - Set the initial cq max_proc_limit
5185 * @phba: lpfc_hba pointer.
5186 * @val: entry limit
5187 *
5188 * Description:
5189 * If val is in a valid range, then initialize the adapter's maximum
5190 * value.
5191 *
5192 * Returns:
5193 * Always returns 0 for success, even if value not always set to
5194 * requested value. If value out of range or not supported, will fall
5195 * back to default.
5196 **/
5197 static int
lpfc_cq_max_proc_limit_init(struct lpfc_hba * phba,int val)5198 lpfc_cq_max_proc_limit_init(struct lpfc_hba *phba, int val)
5199 {
5200 phba->cfg_cq_max_proc_limit = LPFC_CQ_DEF_MAX_PROC_LIMIT;
5201
5202 if (phba->sli_rev != LPFC_SLI_REV4)
5203 return 0;
5204
5205 if (val >= LPFC_CQ_MIN_PROC_LIMIT && val <= LPFC_CQ_MAX_PROC_LIMIT) {
5206 phba->cfg_cq_max_proc_limit = val;
5207 return 0;
5208 }
5209
5210 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5211 "0371 lpfc_cq_max_proc_limit: %d out of range, using "
5212 "default\n",
5213 phba->cfg_cq_max_proc_limit);
5214
5215 return 0;
5216 }
5217
5218 static DEVICE_ATTR_RW(lpfc_cq_max_proc_limit);
5219
5220 /**
5221 * lpfc_fcp_cpu_map_show - Display current driver CPU affinity
5222 * @dev: class converted to a Scsi_host structure.
5223 * @attr: device attribute, not used.
5224 * @buf: on return contains text describing the state of the link.
5225 *
5226 * Returns: size of formatted string.
5227 **/
5228 static ssize_t
lpfc_fcp_cpu_map_show(struct device * dev,struct device_attribute * attr,char * buf)5229 lpfc_fcp_cpu_map_show(struct device *dev, struct device_attribute *attr,
5230 char *buf)
5231 {
5232 struct Scsi_Host *shost = class_to_shost(dev);
5233 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5234 struct lpfc_hba *phba = vport->phba;
5235 struct lpfc_vector_map_info *cpup;
5236 int len = 0;
5237
5238 if ((phba->sli_rev != LPFC_SLI_REV4) ||
5239 (phba->intr_type != MSIX))
5240 return len;
5241
5242 switch (phba->cfg_fcp_cpu_map) {
5243 case 0:
5244 len += scnprintf(buf + len, PAGE_SIZE-len,
5245 "fcp_cpu_map: No mapping (%d)\n",
5246 phba->cfg_fcp_cpu_map);
5247 return len;
5248 case 1:
5249 len += scnprintf(buf + len, PAGE_SIZE-len,
5250 "fcp_cpu_map: HBA centric mapping (%d): "
5251 "%d of %d CPUs online from %d possible CPUs\n",
5252 phba->cfg_fcp_cpu_map, num_online_cpus(),
5253 num_present_cpus(),
5254 phba->sli4_hba.num_possible_cpu);
5255 break;
5256 }
5257
5258 while (phba->sli4_hba.curr_disp_cpu <
5259 phba->sli4_hba.num_possible_cpu) {
5260 cpup = &phba->sli4_hba.cpu_map[phba->sli4_hba.curr_disp_cpu];
5261
5262 if (!cpu_present(phba->sli4_hba.curr_disp_cpu))
5263 len += scnprintf(buf + len, PAGE_SIZE - len,
5264 "CPU %02d not present\n",
5265 phba->sli4_hba.curr_disp_cpu);
5266 else if (cpup->eq == LPFC_VECTOR_MAP_EMPTY) {
5267 if (cpup->hdwq == LPFC_VECTOR_MAP_EMPTY)
5268 len += scnprintf(
5269 buf + len, PAGE_SIZE - len,
5270 "CPU %02d hdwq None "
5271 "physid %d coreid %d ht %d ua %d\n",
5272 phba->sli4_hba.curr_disp_cpu,
5273 cpup->phys_id, cpup->core_id,
5274 (cpup->flag & LPFC_CPU_MAP_HYPER),
5275 (cpup->flag & LPFC_CPU_MAP_UNASSIGN));
5276 else
5277 len += scnprintf(
5278 buf + len, PAGE_SIZE - len,
5279 "CPU %02d EQ None hdwq %04d "
5280 "physid %d coreid %d ht %d ua %d\n",
5281 phba->sli4_hba.curr_disp_cpu,
5282 cpup->hdwq, cpup->phys_id,
5283 cpup->core_id,
5284 (cpup->flag & LPFC_CPU_MAP_HYPER),
5285 (cpup->flag & LPFC_CPU_MAP_UNASSIGN));
5286 } else {
5287 if (cpup->hdwq == LPFC_VECTOR_MAP_EMPTY)
5288 len += scnprintf(
5289 buf + len, PAGE_SIZE - len,
5290 "CPU %02d hdwq None "
5291 "physid %d coreid %d ht %d ua %d IRQ %d\n",
5292 phba->sli4_hba.curr_disp_cpu,
5293 cpup->phys_id,
5294 cpup->core_id,
5295 (cpup->flag & LPFC_CPU_MAP_HYPER),
5296 (cpup->flag & LPFC_CPU_MAP_UNASSIGN),
5297 lpfc_get_irq(cpup->eq));
5298 else
5299 len += scnprintf(
5300 buf + len, PAGE_SIZE - len,
5301 "CPU %02d EQ %04d hdwq %04d "
5302 "physid %d coreid %d ht %d ua %d IRQ %d\n",
5303 phba->sli4_hba.curr_disp_cpu,
5304 cpup->eq, cpup->hdwq, cpup->phys_id,
5305 cpup->core_id,
5306 (cpup->flag & LPFC_CPU_MAP_HYPER),
5307 (cpup->flag & LPFC_CPU_MAP_UNASSIGN),
5308 lpfc_get_irq(cpup->eq));
5309 }
5310
5311 phba->sli4_hba.curr_disp_cpu++;
5312
5313 /* display max number of CPUs keeping some margin */
5314 if (phba->sli4_hba.curr_disp_cpu <
5315 phba->sli4_hba.num_possible_cpu &&
5316 (len >= (PAGE_SIZE - 64))) {
5317 len += scnprintf(buf + len,
5318 PAGE_SIZE - len, "more...\n");
5319 break;
5320 }
5321 }
5322
5323 if (phba->sli4_hba.curr_disp_cpu == phba->sli4_hba.num_possible_cpu)
5324 phba->sli4_hba.curr_disp_cpu = 0;
5325
5326 return len;
5327 }
5328
5329 /**
5330 * lpfc_fcp_cpu_map_store - Change CPU affinity of driver vectors
5331 * @dev: class device that is converted into a Scsi_host.
5332 * @attr: device attribute, not used.
5333 * @buf: one or more lpfc_polling_flags values.
5334 * @count: not used.
5335 *
5336 * Returns:
5337 * -EINVAL - Not implemented yet.
5338 **/
5339 static ssize_t
lpfc_fcp_cpu_map_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)5340 lpfc_fcp_cpu_map_store(struct device *dev, struct device_attribute *attr,
5341 const char *buf, size_t count)
5342 {
5343 return -EINVAL;
5344 }
5345
5346 /*
5347 # lpfc_fcp_cpu_map: Defines how to map CPUs to IRQ vectors
5348 # for the HBA.
5349 #
5350 # Value range is [0 to 1]. Default value is LPFC_HBA_CPU_MAP (1).
5351 # 0 - Do not affinitze IRQ vectors
5352 # 1 - Affintize HBA vectors with respect to each HBA
5353 # (start with CPU0 for each HBA)
5354 # This also defines how Hardware Queues are mapped to specific CPUs.
5355 */
5356 static int lpfc_fcp_cpu_map = LPFC_HBA_CPU_MAP;
5357 module_param(lpfc_fcp_cpu_map, int, S_IRUGO|S_IWUSR);
5358 MODULE_PARM_DESC(lpfc_fcp_cpu_map,
5359 "Defines how to map CPUs to IRQ vectors per HBA");
5360
5361 /**
5362 * lpfc_fcp_cpu_map_init - Set the initial sr-iov virtual function enable
5363 * @phba: lpfc_hba pointer.
5364 * @val: link speed value.
5365 *
5366 * Description:
5367 * If val is in a valid range [0-2], then affinitze the adapter's
5368 * MSIX vectors.
5369 *
5370 * Returns:
5371 * zero if val saved.
5372 * -EINVAL val out of range
5373 **/
5374 static int
lpfc_fcp_cpu_map_init(struct lpfc_hba * phba,int val)5375 lpfc_fcp_cpu_map_init(struct lpfc_hba *phba, int val)
5376 {
5377 if (phba->sli_rev != LPFC_SLI_REV4) {
5378 phba->cfg_fcp_cpu_map = 0;
5379 return 0;
5380 }
5381
5382 if (val >= LPFC_MIN_CPU_MAP && val <= LPFC_MAX_CPU_MAP) {
5383 phba->cfg_fcp_cpu_map = val;
5384 return 0;
5385 }
5386
5387 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5388 "3326 lpfc_fcp_cpu_map: %d out of range, using "
5389 "default\n", val);
5390 phba->cfg_fcp_cpu_map = LPFC_HBA_CPU_MAP;
5391
5392 return 0;
5393 }
5394
5395 static DEVICE_ATTR_RW(lpfc_fcp_cpu_map);
5396
5397 /*
5398 # lpfc_fcp_class: Determines FC class to use for the FCP protocol.
5399 # Value range is [2,3]. Default value is 3.
5400 */
5401 LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3,
5402 "Select Fibre Channel class of service for FCP sequences");
5403
5404 /*
5405 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
5406 # is [0,1]. Default value is 0.
5407 */
5408 LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1,
5409 "Use ADISC on rediscovery to authenticate FCP devices");
5410
5411 /*
5412 # lpfc_first_burst_size: First burst size to use on the NPorts
5413 # that support first burst.
5414 # Value range is [0,65536]. Default value is 0.
5415 */
5416 LPFC_VPORT_ATTR_RW(first_burst_size, 0, 0, 65536,
5417 "First burst size for Targets that support first burst");
5418
5419 /*
5420 * lpfc_nvmet_fb_size: NVME Target mode supported first burst size.
5421 * When the driver is configured as an NVME target, this value is
5422 * communicated to the NVME initiator in the PRLI response. It is
5423 * used only when the lpfc_nvme_enable_fb and lpfc_nvmet_support
5424 * parameters are set and the target is sending the PRLI RSP.
5425 * Parameter supported on physical port only - no NPIV support.
5426 * Value range is [0,65536]. Default value is 0.
5427 */
5428 LPFC_ATTR_RW(nvmet_fb_size, 0, 0, 65536,
5429 "NVME Target mode first burst size in 512B increments.");
5430
5431 /*
5432 * lpfc_nvme_enable_fb: Enable NVME first burst on I and T functions.
5433 * For the Initiator (I), enabling this parameter means that an NVMET
5434 * PRLI response with FBA enabled and an FB_SIZE set to a nonzero value will be
5435 * processed by the initiator for subsequent NVME FCP IO.
5436 * Currently, this feature is not supported on the NVME target
5437 * Value range is [0,1]. Default value is 0 (disabled).
5438 */
5439 LPFC_ATTR_RW(nvme_enable_fb, 0, 0, 1,
5440 "Enable First Burst feature for NVME Initiator.");
5441
5442 /*
5443 # lpfc_max_scsicmpl_time: Use scsi command completion time to control I/O queue
5444 # depth. Default value is 0. When the value of this parameter is zero the
5445 # SCSI command completion time is not used for controlling I/O queue depth. When
5446 # the parameter is set to a non-zero value, the I/O queue depth is controlled
5447 # to limit the I/O completion time to the parameter value.
5448 # The value is set in milliseconds.
5449 */
5450 LPFC_VPORT_ATTR(max_scsicmpl_time, 0, 0, 60000,
5451 "Use command completion time to control queue depth");
5452
5453 lpfc_vport_param_show(max_scsicmpl_time);
5454 static int
lpfc_max_scsicmpl_time_set(struct lpfc_vport * vport,int val)5455 lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val)
5456 {
5457 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
5458 struct lpfc_nodelist *ndlp, *next_ndlp;
5459
5460 if (val == vport->cfg_max_scsicmpl_time)
5461 return 0;
5462 if ((val < 0) || (val > 60000))
5463 return -EINVAL;
5464 vport->cfg_max_scsicmpl_time = val;
5465
5466 spin_lock_irq(shost->host_lock);
5467 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
5468 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
5469 continue;
5470 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth;
5471 }
5472 spin_unlock_irq(shost->host_lock);
5473 return 0;
5474 }
5475 lpfc_vport_param_store(max_scsicmpl_time);
5476 static DEVICE_ATTR_RW(lpfc_max_scsicmpl_time);
5477
5478 /*
5479 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
5480 # range is [0,1]. Default value is 0.
5481 */
5482 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
5483
5484 /*
5485 # lpfc_xri_rebalancing: enable or disable XRI rebalancing feature
5486 # range is [0,1]. Default value is 1.
5487 */
5488 LPFC_ATTR_R(xri_rebalancing, 1, 0, 1, "Enable/Disable XRI rebalancing");
5489
5490 /*
5491 * lpfc_io_sched: Determine scheduling algrithmn for issuing FCP cmds
5492 * range is [0,1]. Default value is 0.
5493 * For [0], FCP commands are issued to Work Queues based on upper layer
5494 * hardware queue index.
5495 * For [1], FCP commands are issued to a Work Queue associated with the
5496 * current CPU.
5497 *
5498 * LPFC_FCP_SCHED_BY_HDWQ == 0
5499 * LPFC_FCP_SCHED_BY_CPU == 1
5500 *
5501 * The driver dynamically sets this to 1 (BY_CPU) if it's able to set up cpu
5502 * affinity for FCP/NVME I/Os through Work Queues associated with the current
5503 * CPU. Otherwise, the default 0 (Round Robin) scheduling of FCP/NVME I/Os
5504 * through WQs will be used.
5505 */
5506 LPFC_ATTR_RW(fcp_io_sched, LPFC_FCP_SCHED_BY_CPU,
5507 LPFC_FCP_SCHED_BY_HDWQ,
5508 LPFC_FCP_SCHED_BY_CPU,
5509 "Determine scheduling algorithm for "
5510 "issuing commands [0] - Hardware Queue, [1] - Current CPU");
5511
5512 /*
5513 * lpfc_ns_query: Determine algrithmn for NameServer queries after RSCN
5514 * range is [0,1]. Default value is 0.
5515 * For [0], GID_FT is used for NameServer queries after RSCN (default)
5516 * For [1], GID_PT is used for NameServer queries after RSCN
5517 *
5518 */
5519 LPFC_ATTR_RW(ns_query, LPFC_NS_QUERY_GID_FT,
5520 LPFC_NS_QUERY_GID_FT, LPFC_NS_QUERY_GID_PT,
5521 "Determine algorithm NameServer queries after RSCN "
5522 "[0] - GID_FT, [1] - GID_PT");
5523
5524 /*
5525 # lpfc_fcp2_no_tgt_reset: Determine bus reset behavior
5526 # range is [0,1]. Default value is 0.
5527 # For [0], bus reset issues target reset to ALL devices
5528 # For [1], bus reset issues target reset to non-FCP2 devices
5529 */
5530 LPFC_ATTR_RW(fcp2_no_tgt_reset, 0, 0, 1, "Determine bus reset behavior for "
5531 "FCP2 devices [0] - issue tgt reset, [1] - no tgt reset");
5532
5533
5534 /*
5535 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
5536 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take
5537 # value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
5538 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if
5539 # cr_delay is set to 0.
5540 */
5541 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
5542 "interrupt response is generated");
5543
5544 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
5545 "interrupt response is generated");
5546
5547 /*
5548 # lpfc_multi_ring_support: Determines how many rings to spread available
5549 # cmd/rsp IOCB entries across.
5550 # Value range is [1,2]. Default value is 1.
5551 */
5552 LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
5553 "SLI rings to spread IOCB entries across");
5554
5555 /*
5556 # lpfc_multi_ring_rctl: If lpfc_multi_ring_support is enabled, this
5557 # identifies what rctl value to configure the additional ring for.
5558 # Value range is [1,0xff]. Default value is 4 (Unsolicated Data).
5559 */
5560 LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1,
5561 255, "Identifies RCTL for additional ring configuration");
5562
5563 /*
5564 # lpfc_multi_ring_type: If lpfc_multi_ring_support is enabled, this
5565 # identifies what type value to configure the additional ring for.
5566 # Value range is [1,0xff]. Default value is 5 (LLC/SNAP).
5567 */
5568 LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1,
5569 255, "Identifies TYPE for additional ring configuration");
5570
5571 /*
5572 # lpfc_enable_SmartSAN: Sets up FDMI support for SmartSAN
5573 # 0 = SmartSAN functionality disabled (default)
5574 # 1 = SmartSAN functionality enabled
5575 # This parameter will override the value of lpfc_fdmi_on module parameter.
5576 # Value range is [0,1]. Default value is 0.
5577 */
5578 LPFC_ATTR_R(enable_SmartSAN, 0, 0, 1, "Enable SmartSAN functionality");
5579
5580 /*
5581 # lpfc_fdmi_on: Controls FDMI support.
5582 # 0 No FDMI support
5583 # 1 Traditional FDMI support (default)
5584 # Traditional FDMI support means the driver will assume FDMI-2 support;
5585 # however, if that fails, it will fallback to FDMI-1.
5586 # If lpfc_enable_SmartSAN is set to 1, the driver ignores lpfc_fdmi_on.
5587 # If lpfc_enable_SmartSAN is set 0, the driver uses the current value of
5588 # lpfc_fdmi_on.
5589 # Value range [0,1]. Default value is 1.
5590 */
5591 LPFC_ATTR_R(fdmi_on, 1, 0, 1, "Enable FDMI support");
5592
5593 /*
5594 # Specifies the maximum number of ELS cmds we can have outstanding (for
5595 # discovery). Value range is [1,64]. Default value = 32.
5596 */
5597 LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
5598 "during discovery");
5599
5600 /*
5601 # lpfc_max_luns: maximum allowed LUN ID. This is the highest LUN ID that
5602 # will be scanned by the SCSI midlayer when sequential scanning is
5603 # used; and is also the highest LUN ID allowed when the SCSI midlayer
5604 # parses REPORT_LUN responses. The lpfc driver has no LUN count or
5605 # LUN ID limit, but the SCSI midlayer requires this field for the uses
5606 # above. The lpfc driver limits the default value to 255 for two reasons.
5607 # As it bounds the sequential scan loop, scanning for thousands of luns
5608 # on a target can take minutes of wall clock time. Additionally,
5609 # there are FC targets, such as JBODs, that only recognize 8-bits of
5610 # LUN ID. When they receive a value greater than 8 bits, they chop off
5611 # the high order bits. In other words, they see LUN IDs 0, 256, 512,
5612 # and so on all as LUN ID 0. This causes the linux kernel, which sees
5613 # valid responses at each of the LUN IDs, to believe there are multiple
5614 # devices present, when in fact, there is only 1.
5615 # A customer that is aware of their target behaviors, and the results as
5616 # indicated above, is welcome to increase the lpfc_max_luns value.
5617 # As mentioned, this value is not used by the lpfc driver, only the
5618 # SCSI midlayer.
5619 # Value range is [0,65535]. Default value is 255.
5620 # NOTE: The SCSI layer might probe all allowed LUN on some old targets.
5621 */
5622 LPFC_VPORT_ULL_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN ID");
5623
5624 /*
5625 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
5626 # Value range is [1,255], default value is 10.
5627 */
5628 LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
5629 "Milliseconds driver will wait between polling FCP ring");
5630
5631 /*
5632 # lpfc_task_mgmt_tmo: Maximum time to wait for task management commands
5633 # to complete in seconds. Value range is [5,180], default value is 60.
5634 */
5635 LPFC_ATTR_RW(task_mgmt_tmo, 60, 5, 180,
5636 "Maximum time to wait for task management commands to complete");
5637 /*
5638 # lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
5639 # support this feature
5640 # 0 = MSI disabled
5641 # 1 = MSI enabled
5642 # 2 = MSI-X enabled (default)
5643 # Value range is [0,2]. Default value is 2.
5644 */
5645 LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or "
5646 "MSI-X (2), if possible");
5647
5648 /*
5649 * lpfc_nvme_oas: Use the oas bit when sending NVME/NVMET IOs
5650 *
5651 * 0 = NVME OAS disabled
5652 * 1 = NVME OAS enabled
5653 *
5654 * Value range is [0,1]. Default value is 0.
5655 */
5656 LPFC_ATTR_RW(nvme_oas, 0, 0, 1,
5657 "Use OAS bit on NVME IOs");
5658
5659 /*
5660 * lpfc_nvme_embed_cmd: Use the oas bit when sending NVME/NVMET IOs
5661 *
5662 * 0 = Put NVME Command in SGL
5663 * 1 = Embed NVME Command in WQE (unless G7)
5664 * 2 = Embed NVME Command in WQE (force)
5665 *
5666 * Value range is [0,2]. Default value is 1.
5667 */
5668 LPFC_ATTR_RW(nvme_embed_cmd, 1, 0, 2,
5669 "Embed NVME Command in WQE");
5670
5671 /*
5672 * lpfc_fcp_mq_threshold: Set the maximum number of Hardware Queues
5673 * the driver will advertise it supports to the SCSI layer.
5674 *
5675 * 0 = Set nr_hw_queues by the number of CPUs or HW queues.
5676 * 1,256 = Manually specify nr_hw_queue value to be advertised,
5677 *
5678 * Value range is [0,256]. Default value is 8.
5679 */
5680 LPFC_ATTR_R(fcp_mq_threshold, LPFC_FCP_MQ_THRESHOLD_DEF,
5681 LPFC_FCP_MQ_THRESHOLD_MIN, LPFC_FCP_MQ_THRESHOLD_MAX,
5682 "Set the number of SCSI Queues advertised");
5683
5684 /*
5685 * lpfc_hdw_queue: Set the number of Hardware Queues the driver
5686 * will advertise it supports to the NVME and SCSI layers. This also
5687 * will map to the number of CQ/WQ pairs the driver will create.
5688 *
5689 * The NVME Layer will try to create this many, plus 1 administrative
5690 * hardware queue. The administrative queue will always map to WQ 0
5691 * A hardware IO queue maps (qidx) to a specific driver CQ/WQ.
5692 *
5693 * 0 = Configure the number of hdw queues to the number of active CPUs.
5694 * 1,256 = Manually specify how many hdw queues to use.
5695 *
5696 * Value range is [0,256]. Default value is 0.
5697 */
5698 LPFC_ATTR_R(hdw_queue,
5699 LPFC_HBA_HDWQ_DEF,
5700 LPFC_HBA_HDWQ_MIN, LPFC_HBA_HDWQ_MAX,
5701 "Set the number of I/O Hardware Queues");
5702
5703 #if IS_ENABLED(CONFIG_X86)
5704 /**
5705 * lpfc_cpumask_irq_mode_init - initalizes cpumask of phba based on
5706 * irq_chann_mode
5707 * @phba: Pointer to HBA context object.
5708 **/
5709 static void
lpfc_cpumask_irq_mode_init(struct lpfc_hba * phba)5710 lpfc_cpumask_irq_mode_init(struct lpfc_hba *phba)
5711 {
5712 unsigned int cpu, first_cpu, numa_node = NUMA_NO_NODE;
5713 const struct cpumask *sibling_mask;
5714 struct cpumask *aff_mask = &phba->sli4_hba.irq_aff_mask;
5715
5716 cpumask_clear(aff_mask);
5717
5718 if (phba->irq_chann_mode == NUMA_MODE) {
5719 /* Check if we're a NUMA architecture */
5720 numa_node = dev_to_node(&phba->pcidev->dev);
5721 if (numa_node == NUMA_NO_NODE) {
5722 phba->irq_chann_mode = NORMAL_MODE;
5723 return;
5724 }
5725 }
5726
5727 for_each_possible_cpu(cpu) {
5728 switch (phba->irq_chann_mode) {
5729 case NUMA_MODE:
5730 if (cpu_to_node(cpu) == numa_node)
5731 cpumask_set_cpu(cpu, aff_mask);
5732 break;
5733 case NHT_MODE:
5734 sibling_mask = topology_sibling_cpumask(cpu);
5735 first_cpu = cpumask_first(sibling_mask);
5736 if (first_cpu < nr_cpu_ids)
5737 cpumask_set_cpu(first_cpu, aff_mask);
5738 break;
5739 default:
5740 break;
5741 }
5742 }
5743 }
5744 #endif
5745
5746 static void
lpfc_assign_default_irq_chann(struct lpfc_hba * phba)5747 lpfc_assign_default_irq_chann(struct lpfc_hba *phba)
5748 {
5749 #if IS_ENABLED(CONFIG_X86)
5750 switch (boot_cpu_data.x86_vendor) {
5751 case X86_VENDOR_AMD:
5752 /* If AMD architecture, then default is NUMA_MODE */
5753 phba->irq_chann_mode = NUMA_MODE;
5754 break;
5755 case X86_VENDOR_INTEL:
5756 /* If Intel architecture, then default is no hyperthread mode */
5757 phba->irq_chann_mode = NHT_MODE;
5758 break;
5759 default:
5760 phba->irq_chann_mode = NORMAL_MODE;
5761 break;
5762 }
5763 lpfc_cpumask_irq_mode_init(phba);
5764 #else
5765 phba->irq_chann_mode = NORMAL_MODE;
5766 #endif
5767 }
5768
5769 /*
5770 * lpfc_irq_chann: Set the number of IRQ vectors that are available
5771 * for Hardware Queues to utilize. This also will map to the number
5772 * of EQ / MSI-X vectors the driver will create. This should never be
5773 * more than the number of Hardware Queues
5774 *
5775 * 0 = Configure number of IRQ Channels to:
5776 * if AMD architecture, number of CPUs on HBA's NUMA node
5777 * if Intel architecture, number of physical CPUs.
5778 * otherwise, number of active CPUs.
5779 * [1,256] = Manually specify how many IRQ Channels to use.
5780 *
5781 * Value range is [0,256]. Default value is [0].
5782 */
5783 static uint lpfc_irq_chann = LPFC_IRQ_CHANN_DEF;
5784 module_param(lpfc_irq_chann, uint, 0444);
5785 MODULE_PARM_DESC(lpfc_irq_chann, "Set number of interrupt vectors to allocate");
5786
5787 /* lpfc_irq_chann_init - Set the hba irq_chann initial value
5788 * @phba: lpfc_hba pointer.
5789 * @val: contains the initial value
5790 *
5791 * Description:
5792 * Validates the initial value is within range and assigns it to the
5793 * adapter. If not in range, an error message is posted and the
5794 * default value is assigned.
5795 *
5796 * Returns:
5797 * zero if value is in range and is set
5798 * -EINVAL if value was out of range
5799 **/
5800 static int
lpfc_irq_chann_init(struct lpfc_hba * phba,uint32_t val)5801 lpfc_irq_chann_init(struct lpfc_hba *phba, uint32_t val)
5802 {
5803 const struct cpumask *aff_mask;
5804
5805 if (phba->cfg_use_msi != 2) {
5806 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5807 "8532 use_msi = %u ignoring cfg_irq_numa\n",
5808 phba->cfg_use_msi);
5809 phba->irq_chann_mode = NORMAL_MODE;
5810 phba->cfg_irq_chann = LPFC_IRQ_CHANN_DEF;
5811 return 0;
5812 }
5813
5814 /* Check if default setting was passed */
5815 if (val == LPFC_IRQ_CHANN_DEF &&
5816 phba->cfg_hdw_queue == LPFC_HBA_HDWQ_DEF &&
5817 phba->sli_rev == LPFC_SLI_REV4)
5818 lpfc_assign_default_irq_chann(phba);
5819
5820 if (phba->irq_chann_mode != NORMAL_MODE) {
5821 aff_mask = &phba->sli4_hba.irq_aff_mask;
5822
5823 if (cpumask_empty(aff_mask)) {
5824 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5825 "8533 Could not identify CPUS for "
5826 "mode %d, ignoring\n",
5827 phba->irq_chann_mode);
5828 phba->irq_chann_mode = NORMAL_MODE;
5829 phba->cfg_irq_chann = LPFC_IRQ_CHANN_DEF;
5830 } else {
5831 phba->cfg_irq_chann = cpumask_weight(aff_mask);
5832
5833 /* If no hyperthread mode, then set hdwq count to
5834 * aff_mask weight as well
5835 */
5836 if (phba->irq_chann_mode == NHT_MODE)
5837 phba->cfg_hdw_queue = phba->cfg_irq_chann;
5838
5839 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5840 "8543 lpfc_irq_chann set to %u "
5841 "(mode: %d)\n", phba->cfg_irq_chann,
5842 phba->irq_chann_mode);
5843 }
5844 } else {
5845 if (val > LPFC_IRQ_CHANN_MAX) {
5846 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5847 "8545 lpfc_irq_chann attribute cannot "
5848 "be set to %u, allowed range is "
5849 "[%u,%u]\n",
5850 val,
5851 LPFC_IRQ_CHANN_MIN,
5852 LPFC_IRQ_CHANN_MAX);
5853 phba->cfg_irq_chann = LPFC_IRQ_CHANN_DEF;
5854 return -EINVAL;
5855 }
5856 if (phba->sli_rev == LPFC_SLI_REV4) {
5857 phba->cfg_irq_chann = val;
5858 } else {
5859 phba->cfg_irq_chann = 2;
5860 phba->cfg_hdw_queue = 1;
5861 }
5862 }
5863
5864 return 0;
5865 }
5866
5867 /**
5868 * lpfc_irq_chann_show - Display value of irq_chann
5869 * @dev: class converted to a Scsi_host structure.
5870 * @attr: device attribute, not used.
5871 * @buf: on return contains a string with the list sizes
5872 *
5873 * Returns: size of formatted string.
5874 **/
5875 static ssize_t
lpfc_irq_chann_show(struct device * dev,struct device_attribute * attr,char * buf)5876 lpfc_irq_chann_show(struct device *dev, struct device_attribute *attr,
5877 char *buf)
5878 {
5879 struct Scsi_Host *shost = class_to_shost(dev);
5880 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
5881 struct lpfc_hba *phba = vport->phba;
5882
5883 return scnprintf(buf, PAGE_SIZE, "%u\n", phba->cfg_irq_chann);
5884 }
5885
5886 static DEVICE_ATTR_RO(lpfc_irq_chann);
5887
5888 /*
5889 # lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware.
5890 # 0 = HBA resets disabled
5891 # 1 = HBA resets enabled (default)
5892 # 2 = HBA reset via PCI bus reset enabled
5893 # Value range is [0,2]. Default value is 1.
5894 */
5895 LPFC_ATTR_RW(enable_hba_reset, 1, 0, 2, "Enable HBA resets from the driver.");
5896
5897 /*
5898 # lpfc_enable_hba_heartbeat: Disable HBA heartbeat timer..
5899 # 0 = HBA Heartbeat disabled
5900 # 1 = HBA Heartbeat enabled (default)
5901 # Value range is [0,1]. Default value is 1.
5902 */
5903 LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat.");
5904
5905 /*
5906 # lpfc_EnableXLane: Enable Express Lane Feature
5907 # 0x0 Express Lane Feature disabled
5908 # 0x1 Express Lane Feature enabled
5909 # Value range is [0,1]. Default value is 0.
5910 */
5911 LPFC_ATTR_R(EnableXLane, 0, 0, 1, "Enable Express Lane Feature.");
5912
5913 /*
5914 # lpfc_XLanePriority: Define CS_CTL priority for Express Lane Feature
5915 # 0x0 - 0x7f = CS_CTL field in FC header (high 7 bits)
5916 # Value range is [0x0,0x7f]. Default value is 0
5917 */
5918 LPFC_ATTR_RW(XLanePriority, 0, 0x0, 0x7f, "CS_CTL for Express Lane Feature.");
5919
5920 /*
5921 # lpfc_enable_bg: Enable BlockGuard (Emulex's Implementation of T10-DIF)
5922 # 0 = BlockGuard disabled (default)
5923 # 1 = BlockGuard enabled
5924 # Value range is [0,1]. Default value is 0.
5925 */
5926 LPFC_ATTR_R(enable_bg, 0, 0, 1, "Enable BlockGuard Support");
5927
5928 /*
5929 # lpfc_prot_mask:
5930 # - Bit mask of host protection capabilities used to register with the
5931 # SCSI mid-layer
5932 # - Only meaningful if BG is turned on (lpfc_enable_bg=1).
5933 # - Allows you to ultimately specify which profiles to use
5934 # - Default will result in registering capabilities for all profiles.
5935 # - SHOST_DIF_TYPE1_PROTECTION 1
5936 # HBA supports T10 DIF Type 1: HBA to Target Type 1 Protection
5937 # - SHOST_DIX_TYPE0_PROTECTION 8
5938 # HBA supports DIX Type 0: Host to HBA protection only
5939 # - SHOST_DIX_TYPE1_PROTECTION 16
5940 # HBA supports DIX Type 1: Host to HBA Type 1 protection
5941 #
5942 */
5943 LPFC_ATTR(prot_mask,
5944 (SHOST_DIF_TYPE1_PROTECTION |
5945 SHOST_DIX_TYPE0_PROTECTION |
5946 SHOST_DIX_TYPE1_PROTECTION),
5947 0,
5948 (SHOST_DIF_TYPE1_PROTECTION |
5949 SHOST_DIX_TYPE0_PROTECTION |
5950 SHOST_DIX_TYPE1_PROTECTION),
5951 "T10-DIF host protection capabilities mask");
5952
5953 /*
5954 # lpfc_prot_guard:
5955 # - Bit mask of protection guard types to register with the SCSI mid-layer
5956 # - Guard types are currently either 1) T10-DIF CRC 2) IP checksum
5957 # - Allows you to ultimately specify which profiles to use
5958 # - Default will result in registering capabilities for all guard types
5959 #
5960 */
5961 LPFC_ATTR(prot_guard,
5962 SHOST_DIX_GUARD_IP, SHOST_DIX_GUARD_CRC, SHOST_DIX_GUARD_IP,
5963 "T10-DIF host protection guard type");
5964
5965 /*
5966 * Delay initial NPort discovery when Clean Address bit is cleared in
5967 * FLOGI/FDISC accept and FCID/Fabric name/Fabric portname is changed.
5968 * This parameter can have value 0 or 1.
5969 * When this parameter is set to 0, no delay is added to the initial
5970 * discovery.
5971 * When this parameter is set to non-zero value, initial Nport discovery is
5972 * delayed by ra_tov seconds when Clean Address bit is cleared in FLOGI/FDISC
5973 * accept and FCID/Fabric name/Fabric portname is changed.
5974 * Driver always delay Nport discovery for subsequent FLOGI/FDISC completion
5975 * when Clean Address bit is cleared in FLOGI/FDISC
5976 * accept and FCID/Fabric name/Fabric portname is changed.
5977 * Default value is 0.
5978 */
5979 LPFC_ATTR(delay_discovery, 0, 0, 1,
5980 "Delay NPort discovery when Clean Address bit is cleared.");
5981
5982 /*
5983 * lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count
5984 * This value can be set to values between 64 and 4096. The default value
5985 * is 64, but may be increased to allow for larger Max I/O sizes. The scsi
5986 * and nvme layers will allow I/O sizes up to (MAX_SEG_COUNT * SEG_SIZE).
5987 * Because of the additional overhead involved in setting up T10-DIF,
5988 * this parameter will be limited to 128 if BlockGuard is enabled under SLI4
5989 * and will be limited to 512 if BlockGuard is enabled under SLI3.
5990 */
5991 static uint lpfc_sg_seg_cnt = LPFC_DEFAULT_SG_SEG_CNT;
5992 module_param(lpfc_sg_seg_cnt, uint, 0444);
5993 MODULE_PARM_DESC(lpfc_sg_seg_cnt, "Max Scatter Gather Segment Count");
5994
5995 /**
5996 * lpfc_sg_seg_cnt_show - Display the scatter/gather list sizes
5997 * configured for the adapter
5998 * @dev: class converted to a Scsi_host structure.
5999 * @attr: device attribute, not used.
6000 * @buf: on return contains a string with the list sizes
6001 *
6002 * Returns: size of formatted string.
6003 **/
6004 static ssize_t
lpfc_sg_seg_cnt_show(struct device * dev,struct device_attribute * attr,char * buf)6005 lpfc_sg_seg_cnt_show(struct device *dev, struct device_attribute *attr,
6006 char *buf)
6007 {
6008 struct Scsi_Host *shost = class_to_shost(dev);
6009 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
6010 struct lpfc_hba *phba = vport->phba;
6011 int len;
6012
6013 len = scnprintf(buf, PAGE_SIZE, "SGL sz: %d total SGEs: %d\n",
6014 phba->cfg_sg_dma_buf_size, phba->cfg_total_seg_cnt);
6015
6016 len += scnprintf(buf + len, PAGE_SIZE, "Cfg: %d SCSI: %d NVME: %d\n",
6017 phba->cfg_sg_seg_cnt, phba->cfg_scsi_seg_cnt,
6018 phba->cfg_nvme_seg_cnt);
6019 return len;
6020 }
6021
6022 static DEVICE_ATTR_RO(lpfc_sg_seg_cnt);
6023
6024 /**
6025 * lpfc_sg_seg_cnt_init - Set the hba sg_seg_cnt initial value
6026 * @phba: lpfc_hba pointer.
6027 * @val: contains the initial value
6028 *
6029 * Description:
6030 * Validates the initial value is within range and assigns it to the
6031 * adapter. If not in range, an error message is posted and the
6032 * default value is assigned.
6033 *
6034 * Returns:
6035 * zero if value is in range and is set
6036 * -EINVAL if value was out of range
6037 **/
6038 static int
lpfc_sg_seg_cnt_init(struct lpfc_hba * phba,int val)6039 lpfc_sg_seg_cnt_init(struct lpfc_hba *phba, int val)
6040 {
6041 if (val >= LPFC_MIN_SG_SEG_CNT && val <= LPFC_MAX_SG_SEG_CNT) {
6042 phba->cfg_sg_seg_cnt = val;
6043 return 0;
6044 }
6045 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6046 "0409 lpfc_sg_seg_cnt attribute cannot be set to %d, "
6047 "allowed range is [%d, %d]\n",
6048 val, LPFC_MIN_SG_SEG_CNT, LPFC_MAX_SG_SEG_CNT);
6049 phba->cfg_sg_seg_cnt = LPFC_DEFAULT_SG_SEG_CNT;
6050 return -EINVAL;
6051 }
6052
6053 /*
6054 * lpfc_enable_mds_diags: Enable MDS Diagnostics
6055 * 0 = MDS Diagnostics disabled (default)
6056 * 1 = MDS Diagnostics enabled
6057 * Value range is [0,1]. Default value is 0.
6058 */
6059 LPFC_ATTR_RW(enable_mds_diags, 0, 0, 1, "Enable MDS Diagnostics");
6060
6061 /*
6062 * lpfc_ras_fwlog_buffsize: Firmware logging host buffer size
6063 * 0 = Disable firmware logging (default)
6064 * [1-4] = Multiple of 1/4th Mb of host memory for FW logging
6065 * Value range [0..4]. Default value is 0
6066 */
6067 LPFC_ATTR(ras_fwlog_buffsize, 0, 0, 4, "Host memory for FW logging");
6068 lpfc_param_show(ras_fwlog_buffsize);
6069
6070 static ssize_t
lpfc_ras_fwlog_buffsize_set(struct lpfc_hba * phba,uint val)6071 lpfc_ras_fwlog_buffsize_set(struct lpfc_hba *phba, uint val)
6072 {
6073 int ret = 0;
6074 enum ras_state state;
6075
6076 if (!lpfc_rangecheck(val, 0, 4))
6077 return -EINVAL;
6078
6079 if (phba->cfg_ras_fwlog_buffsize == val)
6080 return 0;
6081
6082 if (phba->cfg_ras_fwlog_func != PCI_FUNC(phba->pcidev->devfn))
6083 return -EINVAL;
6084
6085 spin_lock_irq(&phba->hbalock);
6086 state = phba->ras_fwlog.state;
6087 spin_unlock_irq(&phba->hbalock);
6088
6089 if (state == REG_INPROGRESS) {
6090 lpfc_printf_log(phba, KERN_ERR, LOG_SLI, "6147 RAS Logging "
6091 "registration is in progress\n");
6092 return -EBUSY;
6093 }
6094
6095 /* For disable logging: stop the logs and free the DMA.
6096 * For ras_fwlog_buffsize size change we still need to free and
6097 * reallocate the DMA in lpfc_sli4_ras_fwlog_init.
6098 */
6099 phba->cfg_ras_fwlog_buffsize = val;
6100 if (state == ACTIVE) {
6101 lpfc_ras_stop_fwlog(phba);
6102 lpfc_sli4_ras_dma_free(phba);
6103 }
6104
6105 lpfc_sli4_ras_init(phba);
6106 if (phba->ras_fwlog.ras_enabled)
6107 ret = lpfc_sli4_ras_fwlog_init(phba, phba->cfg_ras_fwlog_level,
6108 LPFC_RAS_ENABLE_LOGGING);
6109 return ret;
6110 }
6111
6112 lpfc_param_store(ras_fwlog_buffsize);
6113 static DEVICE_ATTR_RW(lpfc_ras_fwlog_buffsize);
6114
6115 /*
6116 * lpfc_ras_fwlog_level: Firmware logging verbosity level
6117 * Valid only if firmware logging is enabled
6118 * 0(Least Verbosity) 4 (most verbosity)
6119 * Value range is [0..4]. Default value is 0
6120 */
6121 LPFC_ATTR_RW(ras_fwlog_level, 0, 0, 4, "Firmware Logging Level");
6122
6123 /*
6124 * lpfc_ras_fwlog_func: Firmware logging enabled on function number
6125 * Default function which has RAS support : 0
6126 * Value Range is [0..7].
6127 * FW logging is a global action and enablement is via a specific
6128 * port.
6129 */
6130 LPFC_ATTR_RW(ras_fwlog_func, 0, 0, 7, "Firmware Logging Enabled on Function");
6131
6132 /*
6133 * lpfc_enable_bbcr: Enable BB Credit Recovery
6134 * 0 = BB Credit Recovery disabled
6135 * 1 = BB Credit Recovery enabled (default)
6136 * Value range is [0,1]. Default value is 1.
6137 */
6138 LPFC_BBCR_ATTR_RW(enable_bbcr, 1, 0, 1, "Enable BBC Recovery");
6139
6140 /*
6141 * lpfc_enable_dpp: Enable DPP on G7
6142 * 0 = DPP on G7 disabled
6143 * 1 = DPP on G7 enabled (default)
6144 * Value range is [0,1]. Default value is 1.
6145 */
6146 LPFC_ATTR_RW(enable_dpp, 1, 0, 1, "Enable Direct Packet Push");
6147
6148 /*
6149 * lpfc_enable_mi: Enable FDMI MIB
6150 * 0 = disabled
6151 * 1 = enabled (default)
6152 * Value range is [0,1].
6153 */
6154 LPFC_ATTR_R(enable_mi, 1, 0, 1, "Enable MI");
6155
6156 struct device_attribute *lpfc_hba_attrs[] = {
6157 &dev_attr_nvme_info,
6158 &dev_attr_scsi_stat,
6159 &dev_attr_bg_info,
6160 &dev_attr_bg_guard_err,
6161 &dev_attr_bg_apptag_err,
6162 &dev_attr_bg_reftag_err,
6163 &dev_attr_info,
6164 &dev_attr_serialnum,
6165 &dev_attr_modeldesc,
6166 &dev_attr_modelname,
6167 &dev_attr_programtype,
6168 &dev_attr_portnum,
6169 &dev_attr_fwrev,
6170 &dev_attr_hdw,
6171 &dev_attr_option_rom_version,
6172 &dev_attr_link_state,
6173 &dev_attr_num_discovered_ports,
6174 &dev_attr_menlo_mgmt_mode,
6175 &dev_attr_lpfc_drvr_version,
6176 &dev_attr_lpfc_enable_fip,
6177 &dev_attr_lpfc_temp_sensor,
6178 &dev_attr_lpfc_log_verbose,
6179 &dev_attr_lpfc_lun_queue_depth,
6180 &dev_attr_lpfc_tgt_queue_depth,
6181 &dev_attr_lpfc_hba_queue_depth,
6182 &dev_attr_lpfc_peer_port_login,
6183 &dev_attr_lpfc_nodev_tmo,
6184 &dev_attr_lpfc_devloss_tmo,
6185 &dev_attr_lpfc_enable_fc4_type,
6186 &dev_attr_lpfc_fcp_class,
6187 &dev_attr_lpfc_use_adisc,
6188 &dev_attr_lpfc_first_burst_size,
6189 &dev_attr_lpfc_ack0,
6190 &dev_attr_lpfc_xri_rebalancing,
6191 &dev_attr_lpfc_topology,
6192 &dev_attr_lpfc_scan_down,
6193 &dev_attr_lpfc_link_speed,
6194 &dev_attr_lpfc_fcp_io_sched,
6195 &dev_attr_lpfc_ns_query,
6196 &dev_attr_lpfc_fcp2_no_tgt_reset,
6197 &dev_attr_lpfc_cr_delay,
6198 &dev_attr_lpfc_cr_count,
6199 &dev_attr_lpfc_multi_ring_support,
6200 &dev_attr_lpfc_multi_ring_rctl,
6201 &dev_attr_lpfc_multi_ring_type,
6202 &dev_attr_lpfc_fdmi_on,
6203 &dev_attr_lpfc_enable_SmartSAN,
6204 &dev_attr_lpfc_max_luns,
6205 &dev_attr_lpfc_enable_npiv,
6206 &dev_attr_lpfc_fcf_failover_policy,
6207 &dev_attr_lpfc_enable_rrq,
6208 &dev_attr_nport_evt_cnt,
6209 &dev_attr_board_mode,
6210 &dev_attr_max_vpi,
6211 &dev_attr_used_vpi,
6212 &dev_attr_max_rpi,
6213 &dev_attr_used_rpi,
6214 &dev_attr_max_xri,
6215 &dev_attr_used_xri,
6216 &dev_attr_npiv_info,
6217 &dev_attr_issue_reset,
6218 &dev_attr_lpfc_poll,
6219 &dev_attr_lpfc_poll_tmo,
6220 &dev_attr_lpfc_task_mgmt_tmo,
6221 &dev_attr_lpfc_use_msi,
6222 &dev_attr_lpfc_nvme_oas,
6223 &dev_attr_lpfc_nvme_embed_cmd,
6224 &dev_attr_lpfc_fcp_imax,
6225 &dev_attr_lpfc_force_rscn,
6226 &dev_attr_lpfc_cq_poll_threshold,
6227 &dev_attr_lpfc_cq_max_proc_limit,
6228 &dev_attr_lpfc_fcp_cpu_map,
6229 &dev_attr_lpfc_fcp_mq_threshold,
6230 &dev_attr_lpfc_hdw_queue,
6231 &dev_attr_lpfc_irq_chann,
6232 &dev_attr_lpfc_suppress_rsp,
6233 &dev_attr_lpfc_nvmet_mrq,
6234 &dev_attr_lpfc_nvmet_mrq_post,
6235 &dev_attr_lpfc_nvme_enable_fb,
6236 &dev_attr_lpfc_nvmet_fb_size,
6237 &dev_attr_lpfc_enable_bg,
6238 &dev_attr_lpfc_soft_wwnn,
6239 &dev_attr_lpfc_soft_wwpn,
6240 &dev_attr_lpfc_soft_wwn_enable,
6241 &dev_attr_lpfc_enable_hba_reset,
6242 &dev_attr_lpfc_enable_hba_heartbeat,
6243 &dev_attr_lpfc_EnableXLane,
6244 &dev_attr_lpfc_XLanePriority,
6245 &dev_attr_lpfc_xlane_lun,
6246 &dev_attr_lpfc_xlane_tgt,
6247 &dev_attr_lpfc_xlane_vpt,
6248 &dev_attr_lpfc_xlane_lun_state,
6249 &dev_attr_lpfc_xlane_lun_status,
6250 &dev_attr_lpfc_xlane_priority,
6251 &dev_attr_lpfc_sg_seg_cnt,
6252 &dev_attr_lpfc_max_scsicmpl_time,
6253 &dev_attr_lpfc_stat_data_ctrl,
6254 &dev_attr_lpfc_aer_support,
6255 &dev_attr_lpfc_aer_state_cleanup,
6256 &dev_attr_lpfc_sriov_nr_virtfn,
6257 &dev_attr_lpfc_req_fw_upgrade,
6258 &dev_attr_lpfc_suppress_link_up,
6259 &dev_attr_iocb_hw,
6260 &dev_attr_pls,
6261 &dev_attr_pt,
6262 &dev_attr_txq_hw,
6263 &dev_attr_txcmplq_hw,
6264 &dev_attr_lpfc_sriov_hw_max_virtfn,
6265 &dev_attr_protocol,
6266 &dev_attr_lpfc_xlane_supported,
6267 &dev_attr_lpfc_enable_mds_diags,
6268 &dev_attr_lpfc_ras_fwlog_buffsize,
6269 &dev_attr_lpfc_ras_fwlog_level,
6270 &dev_attr_lpfc_ras_fwlog_func,
6271 &dev_attr_lpfc_enable_bbcr,
6272 &dev_attr_lpfc_enable_dpp,
6273 &dev_attr_lpfc_enable_mi,
6274 NULL,
6275 };
6276
6277 struct device_attribute *lpfc_vport_attrs[] = {
6278 &dev_attr_info,
6279 &dev_attr_link_state,
6280 &dev_attr_num_discovered_ports,
6281 &dev_attr_lpfc_drvr_version,
6282 &dev_attr_lpfc_log_verbose,
6283 &dev_attr_lpfc_lun_queue_depth,
6284 &dev_attr_lpfc_tgt_queue_depth,
6285 &dev_attr_lpfc_nodev_tmo,
6286 &dev_attr_lpfc_devloss_tmo,
6287 &dev_attr_lpfc_hba_queue_depth,
6288 &dev_attr_lpfc_peer_port_login,
6289 &dev_attr_lpfc_restrict_login,
6290 &dev_attr_lpfc_fcp_class,
6291 &dev_attr_lpfc_use_adisc,
6292 &dev_attr_lpfc_first_burst_size,
6293 &dev_attr_lpfc_max_luns,
6294 &dev_attr_nport_evt_cnt,
6295 &dev_attr_npiv_info,
6296 &dev_attr_lpfc_enable_da_id,
6297 &dev_attr_lpfc_max_scsicmpl_time,
6298 &dev_attr_lpfc_stat_data_ctrl,
6299 &dev_attr_lpfc_static_vport,
6300 NULL,
6301 };
6302
6303 /**
6304 * sysfs_ctlreg_write - Write method for writing to ctlreg
6305 * @filp: open sysfs file
6306 * @kobj: kernel kobject that contains the kernel class device.
6307 * @bin_attr: kernel attributes passed to us.
6308 * @buf: contains the data to be written to the adapter IOREG space.
6309 * @off: offset into buffer to beginning of data.
6310 * @count: bytes to transfer.
6311 *
6312 * Description:
6313 * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
6314 * Uses the adapter io control registers to send buf contents to the adapter.
6315 *
6316 * Returns:
6317 * -ERANGE off and count combo out of range
6318 * -EINVAL off, count or buff address invalid
6319 * -EPERM adapter is offline
6320 * value of count, buf contents written
6321 **/
6322 static ssize_t
sysfs_ctlreg_write(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)6323 sysfs_ctlreg_write(struct file *filp, struct kobject *kobj,
6324 struct bin_attribute *bin_attr,
6325 char *buf, loff_t off, size_t count)
6326 {
6327 size_t buf_off;
6328 struct device *dev = container_of(kobj, struct device, kobj);
6329 struct Scsi_Host *shost = class_to_shost(dev);
6330 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6331 struct lpfc_hba *phba = vport->phba;
6332
6333 if (phba->sli_rev >= LPFC_SLI_REV4)
6334 return -EPERM;
6335
6336 if ((off + count) > FF_REG_AREA_SIZE)
6337 return -ERANGE;
6338
6339 if (count <= LPFC_REG_WRITE_KEY_SIZE)
6340 return 0;
6341
6342 if (off % 4 || count % 4 || (unsigned long)buf % 4)
6343 return -EINVAL;
6344
6345 /* This is to protect HBA registers from accidental writes. */
6346 if (memcmp(buf, LPFC_REG_WRITE_KEY, LPFC_REG_WRITE_KEY_SIZE))
6347 return -EINVAL;
6348
6349 if (!(vport->fc_flag & FC_OFFLINE_MODE))
6350 return -EPERM;
6351
6352 spin_lock_irq(&phba->hbalock);
6353 for (buf_off = 0; buf_off < count - LPFC_REG_WRITE_KEY_SIZE;
6354 buf_off += sizeof(uint32_t))
6355 writel(*((uint32_t *)(buf + buf_off + LPFC_REG_WRITE_KEY_SIZE)),
6356 phba->ctrl_regs_memmap_p + off + buf_off);
6357
6358 spin_unlock_irq(&phba->hbalock);
6359
6360 return count;
6361 }
6362
6363 /**
6364 * sysfs_ctlreg_read - Read method for reading from ctlreg
6365 * @filp: open sysfs file
6366 * @kobj: kernel kobject that contains the kernel class device.
6367 * @bin_attr: kernel attributes passed to us.
6368 * @buf: if successful contains the data from the adapter IOREG space.
6369 * @off: offset into buffer to beginning of data.
6370 * @count: bytes to transfer.
6371 *
6372 * Description:
6373 * Accessed via /sys/class/scsi_host/hostxxx/ctlreg.
6374 * Uses the adapter io control registers to read data into buf.
6375 *
6376 * Returns:
6377 * -ERANGE off and count combo out of range
6378 * -EINVAL off, count or buff address invalid
6379 * value of count, buf contents read
6380 **/
6381 static ssize_t
sysfs_ctlreg_read(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)6382 sysfs_ctlreg_read(struct file *filp, struct kobject *kobj,
6383 struct bin_attribute *bin_attr,
6384 char *buf, loff_t off, size_t count)
6385 {
6386 size_t buf_off;
6387 uint32_t * tmp_ptr;
6388 struct device *dev = container_of(kobj, struct device, kobj);
6389 struct Scsi_Host *shost = class_to_shost(dev);
6390 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6391 struct lpfc_hba *phba = vport->phba;
6392
6393 if (phba->sli_rev >= LPFC_SLI_REV4)
6394 return -EPERM;
6395
6396 if (off > FF_REG_AREA_SIZE)
6397 return -ERANGE;
6398
6399 if ((off + count) > FF_REG_AREA_SIZE)
6400 count = FF_REG_AREA_SIZE - off;
6401
6402 if (count == 0) return 0;
6403
6404 if (off % 4 || count % 4 || (unsigned long)buf % 4)
6405 return -EINVAL;
6406
6407 spin_lock_irq(&phba->hbalock);
6408
6409 for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
6410 tmp_ptr = (uint32_t *)(buf + buf_off);
6411 *tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
6412 }
6413
6414 spin_unlock_irq(&phba->hbalock);
6415
6416 return count;
6417 }
6418
6419 static struct bin_attribute sysfs_ctlreg_attr = {
6420 .attr = {
6421 .name = "ctlreg",
6422 .mode = S_IRUSR | S_IWUSR,
6423 },
6424 .size = 256,
6425 .read = sysfs_ctlreg_read,
6426 .write = sysfs_ctlreg_write,
6427 };
6428
6429 /**
6430 * sysfs_mbox_write - Write method for writing information via mbox
6431 * @filp: open sysfs file
6432 * @kobj: kernel kobject that contains the kernel class device.
6433 * @bin_attr: kernel attributes passed to us.
6434 * @buf: contains the data to be written to sysfs mbox.
6435 * @off: offset into buffer to beginning of data.
6436 * @count: bytes to transfer.
6437 *
6438 * Description:
6439 * Deprecated function. All mailbox access from user space is performed via the
6440 * bsg interface.
6441 *
6442 * Returns:
6443 * -EPERM operation not permitted
6444 **/
6445 static ssize_t
sysfs_mbox_write(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)6446 sysfs_mbox_write(struct file *filp, struct kobject *kobj,
6447 struct bin_attribute *bin_attr,
6448 char *buf, loff_t off, size_t count)
6449 {
6450 return -EPERM;
6451 }
6452
6453 /**
6454 * sysfs_mbox_read - Read method for reading information via mbox
6455 * @filp: open sysfs file
6456 * @kobj: kernel kobject that contains the kernel class device.
6457 * @bin_attr: kernel attributes passed to us.
6458 * @buf: contains the data to be read from sysfs mbox.
6459 * @off: offset into buffer to beginning of data.
6460 * @count: bytes to transfer.
6461 *
6462 * Description:
6463 * Deprecated function. All mailbox access from user space is performed via the
6464 * bsg interface.
6465 *
6466 * Returns:
6467 * -EPERM operation not permitted
6468 **/
6469 static ssize_t
sysfs_mbox_read(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)6470 sysfs_mbox_read(struct file *filp, struct kobject *kobj,
6471 struct bin_attribute *bin_attr,
6472 char *buf, loff_t off, size_t count)
6473 {
6474 return -EPERM;
6475 }
6476
6477 static struct bin_attribute sysfs_mbox_attr = {
6478 .attr = {
6479 .name = "mbox",
6480 .mode = S_IRUSR | S_IWUSR,
6481 },
6482 .size = MAILBOX_SYSFS_MAX,
6483 .read = sysfs_mbox_read,
6484 .write = sysfs_mbox_write,
6485 };
6486
6487 /**
6488 * lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries
6489 * @vport: address of lpfc vport structure.
6490 *
6491 * Return codes:
6492 * zero on success
6493 * error return code from sysfs_create_bin_file()
6494 **/
6495 int
lpfc_alloc_sysfs_attr(struct lpfc_vport * vport)6496 lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
6497 {
6498 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6499 int error;
6500
6501 error = sysfs_create_bin_file(&shost->shost_dev.kobj,
6502 &sysfs_drvr_stat_data_attr);
6503
6504 /* Virtual ports do not need ctrl_reg and mbox */
6505 if (error || vport->port_type == LPFC_NPIV_PORT)
6506 goto out;
6507
6508 error = sysfs_create_bin_file(&shost->shost_dev.kobj,
6509 &sysfs_ctlreg_attr);
6510 if (error)
6511 goto out_remove_stat_attr;
6512
6513 error = sysfs_create_bin_file(&shost->shost_dev.kobj,
6514 &sysfs_mbox_attr);
6515 if (error)
6516 goto out_remove_ctlreg_attr;
6517
6518 return 0;
6519 out_remove_ctlreg_attr:
6520 sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
6521 out_remove_stat_attr:
6522 sysfs_remove_bin_file(&shost->shost_dev.kobj,
6523 &sysfs_drvr_stat_data_attr);
6524 out:
6525 return error;
6526 }
6527
6528 /**
6529 * lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries
6530 * @vport: address of lpfc vport structure.
6531 **/
6532 void
lpfc_free_sysfs_attr(struct lpfc_vport * vport)6533 lpfc_free_sysfs_attr(struct lpfc_vport *vport)
6534 {
6535 struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
6536 sysfs_remove_bin_file(&shost->shost_dev.kobj,
6537 &sysfs_drvr_stat_data_attr);
6538 /* Virtual ports do not need ctrl_reg and mbox */
6539 if (vport->port_type == LPFC_NPIV_PORT)
6540 return;
6541 sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_mbox_attr);
6542 sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
6543 }
6544
6545 /*
6546 * Dynamic FC Host Attributes Support
6547 */
6548
6549 /**
6550 * lpfc_get_host_symbolic_name - Copy symbolic name into the scsi host
6551 * @shost: kernel scsi host pointer.
6552 **/
6553 static void
lpfc_get_host_symbolic_name(struct Scsi_Host * shost)6554 lpfc_get_host_symbolic_name(struct Scsi_Host *shost)
6555 {
6556 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata;
6557
6558 lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
6559 sizeof fc_host_symbolic_name(shost));
6560 }
6561
6562 /**
6563 * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id
6564 * @shost: kernel scsi host pointer.
6565 **/
6566 static void
lpfc_get_host_port_id(struct Scsi_Host * shost)6567 lpfc_get_host_port_id(struct Scsi_Host *shost)
6568 {
6569 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6570
6571 /* note: fc_myDID already in cpu endianness */
6572 fc_host_port_id(shost) = vport->fc_myDID;
6573 }
6574
6575 /**
6576 * lpfc_get_host_port_type - Set the value of the scsi host port type
6577 * @shost: kernel scsi host pointer.
6578 **/
6579 static void
lpfc_get_host_port_type(struct Scsi_Host * shost)6580 lpfc_get_host_port_type(struct Scsi_Host *shost)
6581 {
6582 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6583 struct lpfc_hba *phba = vport->phba;
6584
6585 spin_lock_irq(shost->host_lock);
6586
6587 if (vport->port_type == LPFC_NPIV_PORT) {
6588 fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
6589 } else if (lpfc_is_link_up(phba)) {
6590 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
6591 if (vport->fc_flag & FC_PUBLIC_LOOP)
6592 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
6593 else
6594 fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
6595 } else {
6596 if (vport->fc_flag & FC_FABRIC)
6597 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
6598 else
6599 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
6600 }
6601 } else
6602 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
6603
6604 spin_unlock_irq(shost->host_lock);
6605 }
6606
6607 /**
6608 * lpfc_get_host_port_state - Set the value of the scsi host port state
6609 * @shost: kernel scsi host pointer.
6610 **/
6611 static void
lpfc_get_host_port_state(struct Scsi_Host * shost)6612 lpfc_get_host_port_state(struct Scsi_Host *shost)
6613 {
6614 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6615 struct lpfc_hba *phba = vport->phba;
6616
6617 spin_lock_irq(shost->host_lock);
6618
6619 if (vport->fc_flag & FC_OFFLINE_MODE)
6620 fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
6621 else {
6622 switch (phba->link_state) {
6623 case LPFC_LINK_UNKNOWN:
6624 case LPFC_LINK_DOWN:
6625 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
6626 break;
6627 case LPFC_LINK_UP:
6628 case LPFC_CLEAR_LA:
6629 case LPFC_HBA_READY:
6630 /* Links up, reports port state accordingly */
6631 if (vport->port_state < LPFC_VPORT_READY)
6632 fc_host_port_state(shost) =
6633 FC_PORTSTATE_BYPASSED;
6634 else
6635 fc_host_port_state(shost) =
6636 FC_PORTSTATE_ONLINE;
6637 break;
6638 case LPFC_HBA_ERROR:
6639 fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
6640 break;
6641 default:
6642 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
6643 break;
6644 }
6645 }
6646
6647 spin_unlock_irq(shost->host_lock);
6648 }
6649
6650 /**
6651 * lpfc_get_host_speed - Set the value of the scsi host speed
6652 * @shost: kernel scsi host pointer.
6653 **/
6654 static void
lpfc_get_host_speed(struct Scsi_Host * shost)6655 lpfc_get_host_speed(struct Scsi_Host *shost)
6656 {
6657 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6658 struct lpfc_hba *phba = vport->phba;
6659
6660 spin_lock_irq(shost->host_lock);
6661
6662 if ((lpfc_is_link_up(phba)) && (!(phba->hba_flag & HBA_FCOE_MODE))) {
6663 switch(phba->fc_linkspeed) {
6664 case LPFC_LINK_SPEED_1GHZ:
6665 fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
6666 break;
6667 case LPFC_LINK_SPEED_2GHZ:
6668 fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
6669 break;
6670 case LPFC_LINK_SPEED_4GHZ:
6671 fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
6672 break;
6673 case LPFC_LINK_SPEED_8GHZ:
6674 fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
6675 break;
6676 case LPFC_LINK_SPEED_10GHZ:
6677 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
6678 break;
6679 case LPFC_LINK_SPEED_16GHZ:
6680 fc_host_speed(shost) = FC_PORTSPEED_16GBIT;
6681 break;
6682 case LPFC_LINK_SPEED_32GHZ:
6683 fc_host_speed(shost) = FC_PORTSPEED_32GBIT;
6684 break;
6685 case LPFC_LINK_SPEED_64GHZ:
6686 fc_host_speed(shost) = FC_PORTSPEED_64GBIT;
6687 break;
6688 case LPFC_LINK_SPEED_128GHZ:
6689 fc_host_speed(shost) = FC_PORTSPEED_128GBIT;
6690 break;
6691 default:
6692 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
6693 break;
6694 }
6695 } else if (lpfc_is_link_up(phba) && (phba->hba_flag & HBA_FCOE_MODE)) {
6696 switch (phba->fc_linkspeed) {
6697 case LPFC_ASYNC_LINK_SPEED_1GBPS:
6698 fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
6699 break;
6700 case LPFC_ASYNC_LINK_SPEED_10GBPS:
6701 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
6702 break;
6703 case LPFC_ASYNC_LINK_SPEED_20GBPS:
6704 fc_host_speed(shost) = FC_PORTSPEED_20GBIT;
6705 break;
6706 case LPFC_ASYNC_LINK_SPEED_25GBPS:
6707 fc_host_speed(shost) = FC_PORTSPEED_25GBIT;
6708 break;
6709 case LPFC_ASYNC_LINK_SPEED_40GBPS:
6710 fc_host_speed(shost) = FC_PORTSPEED_40GBIT;
6711 break;
6712 case LPFC_ASYNC_LINK_SPEED_100GBPS:
6713 fc_host_speed(shost) = FC_PORTSPEED_100GBIT;
6714 break;
6715 default:
6716 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
6717 break;
6718 }
6719 } else
6720 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
6721
6722 spin_unlock_irq(shost->host_lock);
6723 }
6724
6725 /**
6726 * lpfc_get_host_fabric_name - Set the value of the scsi host fabric name
6727 * @shost: kernel scsi host pointer.
6728 **/
6729 static void
lpfc_get_host_fabric_name(struct Scsi_Host * shost)6730 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
6731 {
6732 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6733 struct lpfc_hba *phba = vport->phba;
6734 u64 node_name;
6735
6736 spin_lock_irq(shost->host_lock);
6737
6738 if ((vport->port_state > LPFC_FLOGI) &&
6739 ((vport->fc_flag & FC_FABRIC) ||
6740 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) &&
6741 (vport->fc_flag & FC_PUBLIC_LOOP))))
6742 node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
6743 else
6744 /* fabric is local port if there is no F/FL_Port */
6745 node_name = 0;
6746
6747 spin_unlock_irq(shost->host_lock);
6748
6749 fc_host_fabric_name(shost) = node_name;
6750 }
6751
6752 /**
6753 * lpfc_get_stats - Return statistical information about the adapter
6754 * @shost: kernel scsi host pointer.
6755 *
6756 * Notes:
6757 * NULL on error for link down, no mbox pool, sli2 active,
6758 * management not allowed, memory allocation error, or mbox error.
6759 *
6760 * Returns:
6761 * NULL for error
6762 * address of the adapter host statistics
6763 **/
6764 static struct fc_host_statistics *
lpfc_get_stats(struct Scsi_Host * shost)6765 lpfc_get_stats(struct Scsi_Host *shost)
6766 {
6767 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6768 struct lpfc_hba *phba = vport->phba;
6769 struct lpfc_sli *psli = &phba->sli;
6770 struct fc_host_statistics *hs = &phba->link_stats;
6771 struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
6772 LPFC_MBOXQ_t *pmboxq;
6773 MAILBOX_t *pmb;
6774 int rc = 0;
6775
6776 /*
6777 * prevent udev from issuing mailbox commands until the port is
6778 * configured.
6779 */
6780 if (phba->link_state < LPFC_LINK_DOWN ||
6781 !phba->mbox_mem_pool ||
6782 (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0)
6783 return NULL;
6784
6785 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
6786 return NULL;
6787
6788 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6789 if (!pmboxq)
6790 return NULL;
6791 memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
6792
6793 pmb = &pmboxq->u.mb;
6794 pmb->mbxCommand = MBX_READ_STATUS;
6795 pmb->mbxOwner = OWN_HOST;
6796 pmboxq->ctx_buf = NULL;
6797 pmboxq->vport = vport;
6798
6799 if (vport->fc_flag & FC_OFFLINE_MODE) {
6800 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
6801 if (rc != MBX_SUCCESS) {
6802 mempool_free(pmboxq, phba->mbox_mem_pool);
6803 return NULL;
6804 }
6805 } else {
6806 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
6807 if (rc != MBX_SUCCESS) {
6808 if (rc != MBX_TIMEOUT)
6809 mempool_free(pmboxq, phba->mbox_mem_pool);
6810 return NULL;
6811 }
6812 }
6813
6814 memset(hs, 0, sizeof (struct fc_host_statistics));
6815
6816 hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
6817 /*
6818 * The MBX_READ_STATUS returns tx_k_bytes which has to
6819 * converted to words
6820 */
6821 hs->tx_words = (uint64_t)
6822 ((uint64_t)pmb->un.varRdStatus.xmitByteCnt
6823 * (uint64_t)256);
6824 hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
6825 hs->rx_words = (uint64_t)
6826 ((uint64_t)pmb->un.varRdStatus.rcvByteCnt
6827 * (uint64_t)256);
6828
6829 memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
6830 pmb->mbxCommand = MBX_READ_LNK_STAT;
6831 pmb->mbxOwner = OWN_HOST;
6832 pmboxq->ctx_buf = NULL;
6833 pmboxq->vport = vport;
6834
6835 if (vport->fc_flag & FC_OFFLINE_MODE) {
6836 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
6837 if (rc != MBX_SUCCESS) {
6838 mempool_free(pmboxq, phba->mbox_mem_pool);
6839 return NULL;
6840 }
6841 } else {
6842 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
6843 if (rc != MBX_SUCCESS) {
6844 if (rc != MBX_TIMEOUT)
6845 mempool_free(pmboxq, phba->mbox_mem_pool);
6846 return NULL;
6847 }
6848 }
6849
6850 hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
6851 hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
6852 hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
6853 hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
6854 hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
6855 hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
6856 hs->error_frames = pmb->un.varRdLnk.crcCnt;
6857
6858 hs->link_failure_count -= lso->link_failure_count;
6859 hs->loss_of_sync_count -= lso->loss_of_sync_count;
6860 hs->loss_of_signal_count -= lso->loss_of_signal_count;
6861 hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
6862 hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
6863 hs->invalid_crc_count -= lso->invalid_crc_count;
6864 hs->error_frames -= lso->error_frames;
6865
6866 if (phba->hba_flag & HBA_FCOE_MODE) {
6867 hs->lip_count = -1;
6868 hs->nos_count = (phba->link_events >> 1);
6869 hs->nos_count -= lso->link_events;
6870 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) {
6871 hs->lip_count = (phba->fc_eventTag >> 1);
6872 hs->lip_count -= lso->link_events;
6873 hs->nos_count = -1;
6874 } else {
6875 hs->lip_count = -1;
6876 hs->nos_count = (phba->fc_eventTag >> 1);
6877 hs->nos_count -= lso->link_events;
6878 }
6879
6880 hs->dumped_frames = -1;
6881
6882 hs->seconds_since_last_reset = ktime_get_seconds() - psli->stats_start;
6883
6884 mempool_free(pmboxq, phba->mbox_mem_pool);
6885
6886 return hs;
6887 }
6888
6889 /**
6890 * lpfc_reset_stats - Copy the adapter link stats information
6891 * @shost: kernel scsi host pointer.
6892 **/
6893 static void
lpfc_reset_stats(struct Scsi_Host * shost)6894 lpfc_reset_stats(struct Scsi_Host *shost)
6895 {
6896 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6897 struct lpfc_hba *phba = vport->phba;
6898 struct lpfc_sli *psli = &phba->sli;
6899 struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets;
6900 LPFC_MBOXQ_t *pmboxq;
6901 MAILBOX_t *pmb;
6902 int rc = 0;
6903
6904 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
6905 return;
6906
6907 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6908 if (!pmboxq)
6909 return;
6910 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
6911
6912 pmb = &pmboxq->u.mb;
6913 pmb->mbxCommand = MBX_READ_STATUS;
6914 pmb->mbxOwner = OWN_HOST;
6915 pmb->un.varWords[0] = 0x1; /* reset request */
6916 pmboxq->ctx_buf = NULL;
6917 pmboxq->vport = vport;
6918
6919 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
6920 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
6921 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
6922 if (rc != MBX_SUCCESS) {
6923 mempool_free(pmboxq, phba->mbox_mem_pool);
6924 return;
6925 }
6926 } else {
6927 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
6928 if (rc != MBX_SUCCESS) {
6929 if (rc != MBX_TIMEOUT)
6930 mempool_free(pmboxq, phba->mbox_mem_pool);
6931 return;
6932 }
6933 }
6934
6935 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
6936 pmb->mbxCommand = MBX_READ_LNK_STAT;
6937 pmb->mbxOwner = OWN_HOST;
6938 pmboxq->ctx_buf = NULL;
6939 pmboxq->vport = vport;
6940
6941 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
6942 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
6943 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
6944 if (rc != MBX_SUCCESS) {
6945 mempool_free(pmboxq, phba->mbox_mem_pool);
6946 return;
6947 }
6948 } else {
6949 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
6950 if (rc != MBX_SUCCESS) {
6951 if (rc != MBX_TIMEOUT)
6952 mempool_free(pmboxq, phba->mbox_mem_pool);
6953 return;
6954 }
6955 }
6956
6957 lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
6958 lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
6959 lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
6960 lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
6961 lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
6962 lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
6963 lso->error_frames = pmb->un.varRdLnk.crcCnt;
6964 if (phba->hba_flag & HBA_FCOE_MODE)
6965 lso->link_events = (phba->link_events >> 1);
6966 else
6967 lso->link_events = (phba->fc_eventTag >> 1);
6968
6969 psli->stats_start = ktime_get_seconds();
6970
6971 mempool_free(pmboxq, phba->mbox_mem_pool);
6972
6973 return;
6974 }
6975
6976 /*
6977 * The LPFC driver treats linkdown handling as target loss events so there
6978 * are no sysfs handlers for link_down_tmo.
6979 */
6980
6981 /**
6982 * lpfc_get_node_by_target - Return the nodelist for a target
6983 * @starget: kernel scsi target pointer.
6984 *
6985 * Returns:
6986 * address of the node list if found
6987 * NULL target not found
6988 **/
6989 static struct lpfc_nodelist *
lpfc_get_node_by_target(struct scsi_target * starget)6990 lpfc_get_node_by_target(struct scsi_target *starget)
6991 {
6992 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
6993 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
6994 struct lpfc_nodelist *ndlp;
6995
6996 spin_lock_irq(shost->host_lock);
6997 /* Search for this, mapped, target ID */
6998 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
6999 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
7000 starget->id == ndlp->nlp_sid) {
7001 spin_unlock_irq(shost->host_lock);
7002 return ndlp;
7003 }
7004 }
7005 spin_unlock_irq(shost->host_lock);
7006 return NULL;
7007 }
7008
7009 /**
7010 * lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1
7011 * @starget: kernel scsi target pointer.
7012 **/
7013 static void
lpfc_get_starget_port_id(struct scsi_target * starget)7014 lpfc_get_starget_port_id(struct scsi_target *starget)
7015 {
7016 struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
7017
7018 fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1;
7019 }
7020
7021 /**
7022 * lpfc_get_starget_node_name - Set the target node name
7023 * @starget: kernel scsi target pointer.
7024 *
7025 * Description: Set the target node name to the ndlp node name wwn or zero.
7026 **/
7027 static void
lpfc_get_starget_node_name(struct scsi_target * starget)7028 lpfc_get_starget_node_name(struct scsi_target *starget)
7029 {
7030 struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
7031
7032 fc_starget_node_name(starget) =
7033 ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
7034 }
7035
7036 /**
7037 * lpfc_get_starget_port_name - Set the target port name
7038 * @starget: kernel scsi target pointer.
7039 *
7040 * Description: set the target port name to the ndlp port name wwn or zero.
7041 **/
7042 static void
lpfc_get_starget_port_name(struct scsi_target * starget)7043 lpfc_get_starget_port_name(struct scsi_target *starget)
7044 {
7045 struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
7046
7047 fc_starget_port_name(starget) =
7048 ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
7049 }
7050
7051 /**
7052 * lpfc_set_rport_loss_tmo - Set the rport dev loss tmo
7053 * @rport: fc rport address.
7054 * @timeout: new value for dev loss tmo.
7055 *
7056 * Description:
7057 * If timeout is non zero set the dev_loss_tmo to timeout, else set
7058 * dev_loss_tmo to one.
7059 **/
7060 static void
lpfc_set_rport_loss_tmo(struct fc_rport * rport,uint32_t timeout)7061 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
7062 {
7063 struct lpfc_rport_data *rdata = rport->dd_data;
7064 struct lpfc_nodelist *ndlp = rdata->pnode;
7065 #if (IS_ENABLED(CONFIG_NVME_FC))
7066 struct lpfc_nvme_rport *nrport = NULL;
7067 #endif
7068
7069 if (timeout)
7070 rport->dev_loss_tmo = timeout;
7071 else
7072 rport->dev_loss_tmo = 1;
7073
7074 if (!ndlp) {
7075 dev_info(&rport->dev, "Cannot find remote node to "
7076 "set rport dev loss tmo, port_id x%x\n",
7077 rport->port_id);
7078 return;
7079 }
7080
7081 #if (IS_ENABLED(CONFIG_NVME_FC))
7082 nrport = lpfc_ndlp_get_nrport(ndlp);
7083
7084 if (nrport && nrport->remoteport)
7085 nvme_fc_set_remoteport_devloss(nrport->remoteport,
7086 rport->dev_loss_tmo);
7087 #endif
7088 }
7089
7090 /*
7091 * lpfc_rport_show_function - Return rport target information
7092 *
7093 * Description:
7094 * Macro that uses field to generate a function with the name lpfc_show_rport_
7095 *
7096 * lpfc_show_rport_##field: returns the bytes formatted in buf
7097 * @cdev: class converted to an fc_rport.
7098 * @buf: on return contains the target_field or zero.
7099 *
7100 * Returns: size of formatted string.
7101 **/
7102 #define lpfc_rport_show_function(field, format_string, sz, cast) \
7103 static ssize_t \
7104 lpfc_show_rport_##field (struct device *dev, \
7105 struct device_attribute *attr, \
7106 char *buf) \
7107 { \
7108 struct fc_rport *rport = transport_class_to_rport(dev); \
7109 struct lpfc_rport_data *rdata = rport->hostdata; \
7110 return scnprintf(buf, sz, format_string, \
7111 (rdata->target) ? cast rdata->target->field : 0); \
7112 }
7113
7114 #define lpfc_rport_rd_attr(field, format_string, sz) \
7115 lpfc_rport_show_function(field, format_string, sz, ) \
7116 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)
7117
7118 /**
7119 * lpfc_set_vport_symbolic_name - Set the vport's symbolic name
7120 * @fc_vport: The fc_vport who's symbolic name has been changed.
7121 *
7122 * Description:
7123 * This function is called by the transport after the @fc_vport's symbolic name
7124 * has been changed. This function re-registers the symbolic name with the
7125 * switch to propagate the change into the fabric if the vport is active.
7126 **/
7127 static void
lpfc_set_vport_symbolic_name(struct fc_vport * fc_vport)7128 lpfc_set_vport_symbolic_name(struct fc_vport *fc_vport)
7129 {
7130 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
7131
7132 if (vport->port_state == LPFC_VPORT_READY)
7133 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
7134 }
7135
7136 /**
7137 * lpfc_hba_log_verbose_init - Set hba's log verbose level
7138 * @phba: Pointer to lpfc_hba struct.
7139 * @verbose: Verbose level to set.
7140 *
7141 * This function is called by the lpfc_get_cfgparam() routine to set the
7142 * module lpfc_log_verbose into the @phba cfg_log_verbose for use with
7143 * log message according to the module's lpfc_log_verbose parameter setting
7144 * before hba port or vport created.
7145 **/
7146 static void
lpfc_hba_log_verbose_init(struct lpfc_hba * phba,uint32_t verbose)7147 lpfc_hba_log_verbose_init(struct lpfc_hba *phba, uint32_t verbose)
7148 {
7149 phba->cfg_log_verbose = verbose;
7150 }
7151
7152 struct fc_function_template lpfc_transport_functions = {
7153 /* fixed attributes the driver supports */
7154 .show_host_node_name = 1,
7155 .show_host_port_name = 1,
7156 .show_host_supported_classes = 1,
7157 .show_host_supported_fc4s = 1,
7158 .show_host_supported_speeds = 1,
7159 .show_host_maxframe_size = 1,
7160
7161 .get_host_symbolic_name = lpfc_get_host_symbolic_name,
7162 .show_host_symbolic_name = 1,
7163
7164 /* dynamic attributes the driver supports */
7165 .get_host_port_id = lpfc_get_host_port_id,
7166 .show_host_port_id = 1,
7167
7168 .get_host_port_type = lpfc_get_host_port_type,
7169 .show_host_port_type = 1,
7170
7171 .get_host_port_state = lpfc_get_host_port_state,
7172 .show_host_port_state = 1,
7173
7174 /* active_fc4s is shown but doesn't change (thus no get function) */
7175 .show_host_active_fc4s = 1,
7176
7177 .get_host_speed = lpfc_get_host_speed,
7178 .show_host_speed = 1,
7179
7180 .get_host_fabric_name = lpfc_get_host_fabric_name,
7181 .show_host_fabric_name = 1,
7182
7183 /*
7184 * The LPFC driver treats linkdown handling as target loss events
7185 * so there are no sysfs handlers for link_down_tmo.
7186 */
7187
7188 .get_fc_host_stats = lpfc_get_stats,
7189 .reset_fc_host_stats = lpfc_reset_stats,
7190
7191 .dd_fcrport_size = sizeof(struct lpfc_rport_data),
7192 .show_rport_maxframe_size = 1,
7193 .show_rport_supported_classes = 1,
7194
7195 .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
7196 .show_rport_dev_loss_tmo = 1,
7197
7198 .get_starget_port_id = lpfc_get_starget_port_id,
7199 .show_starget_port_id = 1,
7200
7201 .get_starget_node_name = lpfc_get_starget_node_name,
7202 .show_starget_node_name = 1,
7203
7204 .get_starget_port_name = lpfc_get_starget_port_name,
7205 .show_starget_port_name = 1,
7206
7207 .issue_fc_host_lip = lpfc_issue_lip,
7208 .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
7209 .terminate_rport_io = lpfc_terminate_rport_io,
7210
7211 .dd_fcvport_size = sizeof(struct lpfc_vport *),
7212
7213 .vport_disable = lpfc_vport_disable,
7214
7215 .set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
7216
7217 .bsg_request = lpfc_bsg_request,
7218 .bsg_timeout = lpfc_bsg_timeout,
7219 };
7220
7221 struct fc_function_template lpfc_vport_transport_functions = {
7222 /* fixed attributes the driver supports */
7223 .show_host_node_name = 1,
7224 .show_host_port_name = 1,
7225 .show_host_supported_classes = 1,
7226 .show_host_supported_fc4s = 1,
7227 .show_host_supported_speeds = 1,
7228 .show_host_maxframe_size = 1,
7229
7230 .get_host_symbolic_name = lpfc_get_host_symbolic_name,
7231 .show_host_symbolic_name = 1,
7232
7233 /* dynamic attributes the driver supports */
7234 .get_host_port_id = lpfc_get_host_port_id,
7235 .show_host_port_id = 1,
7236
7237 .get_host_port_type = lpfc_get_host_port_type,
7238 .show_host_port_type = 1,
7239
7240 .get_host_port_state = lpfc_get_host_port_state,
7241 .show_host_port_state = 1,
7242
7243 /* active_fc4s is shown but doesn't change (thus no get function) */
7244 .show_host_active_fc4s = 1,
7245
7246 .get_host_speed = lpfc_get_host_speed,
7247 .show_host_speed = 1,
7248
7249 .get_host_fabric_name = lpfc_get_host_fabric_name,
7250 .show_host_fabric_name = 1,
7251
7252 /*
7253 * The LPFC driver treats linkdown handling as target loss events
7254 * so there are no sysfs handlers for link_down_tmo.
7255 */
7256
7257 .get_fc_host_stats = lpfc_get_stats,
7258 .reset_fc_host_stats = lpfc_reset_stats,
7259
7260 .dd_fcrport_size = sizeof(struct lpfc_rport_data),
7261 .show_rport_maxframe_size = 1,
7262 .show_rport_supported_classes = 1,
7263
7264 .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
7265 .show_rport_dev_loss_tmo = 1,
7266
7267 .get_starget_port_id = lpfc_get_starget_port_id,
7268 .show_starget_port_id = 1,
7269
7270 .get_starget_node_name = lpfc_get_starget_node_name,
7271 .show_starget_node_name = 1,
7272
7273 .get_starget_port_name = lpfc_get_starget_port_name,
7274 .show_starget_port_name = 1,
7275
7276 .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
7277 .terminate_rport_io = lpfc_terminate_rport_io,
7278
7279 .vport_disable = lpfc_vport_disable,
7280
7281 .set_vport_symbolic_name = lpfc_set_vport_symbolic_name,
7282 };
7283
7284 /**
7285 * lpfc_get_hba_function_mode - Used to determine the HBA function in FCoE
7286 * Mode
7287 * @phba: lpfc_hba pointer.
7288 **/
7289 static void
lpfc_get_hba_function_mode(struct lpfc_hba * phba)7290 lpfc_get_hba_function_mode(struct lpfc_hba *phba)
7291 {
7292 /* If the adapter supports FCoE mode */
7293 switch (phba->pcidev->device) {
7294 case PCI_DEVICE_ID_SKYHAWK:
7295 case PCI_DEVICE_ID_SKYHAWK_VF:
7296 case PCI_DEVICE_ID_LANCER_FCOE:
7297 case PCI_DEVICE_ID_LANCER_FCOE_VF:
7298 case PCI_DEVICE_ID_ZEPHYR_DCSP:
7299 case PCI_DEVICE_ID_HORNET:
7300 case PCI_DEVICE_ID_TIGERSHARK:
7301 case PCI_DEVICE_ID_TOMCAT:
7302 phba->hba_flag |= HBA_FCOE_MODE;
7303 break;
7304 default:
7305 /* for others, clear the flag */
7306 phba->hba_flag &= ~HBA_FCOE_MODE;
7307 }
7308 }
7309
7310 /**
7311 * lpfc_get_cfgparam - Used during probe_one to init the adapter structure
7312 * @phba: lpfc_hba pointer.
7313 **/
7314 void
lpfc_get_cfgparam(struct lpfc_hba * phba)7315 lpfc_get_cfgparam(struct lpfc_hba *phba)
7316 {
7317 lpfc_hba_log_verbose_init(phba, lpfc_log_verbose);
7318 lpfc_fcp_io_sched_init(phba, lpfc_fcp_io_sched);
7319 lpfc_ns_query_init(phba, lpfc_ns_query);
7320 lpfc_fcp2_no_tgt_reset_init(phba, lpfc_fcp2_no_tgt_reset);
7321 lpfc_cr_delay_init(phba, lpfc_cr_delay);
7322 lpfc_cr_count_init(phba, lpfc_cr_count);
7323 lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
7324 lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
7325 lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
7326 lpfc_ack0_init(phba, lpfc_ack0);
7327 lpfc_xri_rebalancing_init(phba, lpfc_xri_rebalancing);
7328 lpfc_topology_init(phba, lpfc_topology);
7329 lpfc_link_speed_init(phba, lpfc_link_speed);
7330 lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
7331 lpfc_task_mgmt_tmo_init(phba, lpfc_task_mgmt_tmo);
7332 lpfc_enable_npiv_init(phba, lpfc_enable_npiv);
7333 lpfc_fcf_failover_policy_init(phba, lpfc_fcf_failover_policy);
7334 lpfc_enable_rrq_init(phba, lpfc_enable_rrq);
7335 lpfc_fdmi_on_init(phba, lpfc_fdmi_on);
7336 lpfc_enable_SmartSAN_init(phba, lpfc_enable_SmartSAN);
7337 lpfc_use_msi_init(phba, lpfc_use_msi);
7338 lpfc_nvme_oas_init(phba, lpfc_nvme_oas);
7339 lpfc_nvme_embed_cmd_init(phba, lpfc_nvme_embed_cmd);
7340 lpfc_fcp_imax_init(phba, lpfc_fcp_imax);
7341 lpfc_force_rscn_init(phba, lpfc_force_rscn);
7342 lpfc_cq_poll_threshold_init(phba, lpfc_cq_poll_threshold);
7343 lpfc_cq_max_proc_limit_init(phba, lpfc_cq_max_proc_limit);
7344 lpfc_fcp_cpu_map_init(phba, lpfc_fcp_cpu_map);
7345 lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset);
7346 lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat);
7347
7348 lpfc_EnableXLane_init(phba, lpfc_EnableXLane);
7349 if (phba->sli_rev != LPFC_SLI_REV4)
7350 phba->cfg_EnableXLane = 0;
7351 lpfc_XLanePriority_init(phba, lpfc_XLanePriority);
7352
7353 memset(phba->cfg_oas_tgt_wwpn, 0, (8 * sizeof(uint8_t)));
7354 memset(phba->cfg_oas_vpt_wwpn, 0, (8 * sizeof(uint8_t)));
7355 phba->cfg_oas_lun_state = 0;
7356 phba->cfg_oas_lun_status = 0;
7357 phba->cfg_oas_flags = 0;
7358 phba->cfg_oas_priority = 0;
7359 lpfc_enable_bg_init(phba, lpfc_enable_bg);
7360 lpfc_prot_mask_init(phba, lpfc_prot_mask);
7361 lpfc_prot_guard_init(phba, lpfc_prot_guard);
7362 if (phba->sli_rev == LPFC_SLI_REV4)
7363 phba->cfg_poll = 0;
7364 else
7365 phba->cfg_poll = lpfc_poll;
7366
7367 /* Get the function mode */
7368 lpfc_get_hba_function_mode(phba);
7369
7370 /* BlockGuard allowed for FC only. */
7371 if (phba->cfg_enable_bg && phba->hba_flag & HBA_FCOE_MODE) {
7372 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7373 "0581 BlockGuard feature not supported\n");
7374 /* If set, clear the BlockGuard support param */
7375 phba->cfg_enable_bg = 0;
7376 } else if (phba->cfg_enable_bg) {
7377 phba->sli3_options |= LPFC_SLI3_BG_ENABLED;
7378 }
7379
7380 lpfc_suppress_rsp_init(phba, lpfc_suppress_rsp);
7381
7382 lpfc_enable_fc4_type_init(phba, lpfc_enable_fc4_type);
7383 lpfc_nvmet_mrq_init(phba, lpfc_nvmet_mrq);
7384 lpfc_nvmet_mrq_post_init(phba, lpfc_nvmet_mrq_post);
7385
7386 /* Initialize first burst. Target vs Initiator are different. */
7387 lpfc_nvme_enable_fb_init(phba, lpfc_nvme_enable_fb);
7388 lpfc_nvmet_fb_size_init(phba, lpfc_nvmet_fb_size);
7389 lpfc_fcp_mq_threshold_init(phba, lpfc_fcp_mq_threshold);
7390 lpfc_hdw_queue_init(phba, lpfc_hdw_queue);
7391 lpfc_irq_chann_init(phba, lpfc_irq_chann);
7392 lpfc_enable_bbcr_init(phba, lpfc_enable_bbcr);
7393 lpfc_enable_dpp_init(phba, lpfc_enable_dpp);
7394 lpfc_enable_mi_init(phba, lpfc_enable_mi);
7395
7396 if (phba->sli_rev != LPFC_SLI_REV4) {
7397 /* NVME only supported on SLI4 */
7398 phba->nvmet_support = 0;
7399 phba->cfg_nvmet_mrq = 0;
7400 phba->cfg_enable_fc4_type = LPFC_ENABLE_FCP;
7401 phba->cfg_enable_bbcr = 0;
7402 phba->cfg_xri_rebalancing = 0;
7403 } else {
7404 /* We MUST have FCP support */
7405 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_FCP))
7406 phba->cfg_enable_fc4_type |= LPFC_ENABLE_FCP;
7407 }
7408
7409 phba->cfg_auto_imax = (phba->cfg_fcp_imax) ? 0 : 1;
7410
7411 phba->cfg_enable_pbde = 0;
7412
7413 /* A value of 0 means use the number of CPUs found in the system */
7414 if (phba->cfg_hdw_queue == 0)
7415 phba->cfg_hdw_queue = phba->sli4_hba.num_present_cpu;
7416 if (phba->cfg_irq_chann == 0)
7417 phba->cfg_irq_chann = phba->sli4_hba.num_present_cpu;
7418 if (phba->cfg_irq_chann > phba->cfg_hdw_queue &&
7419 phba->sli_rev == LPFC_SLI_REV4)
7420 phba->cfg_irq_chann = phba->cfg_hdw_queue;
7421
7422 phba->cfg_soft_wwnn = 0L;
7423 phba->cfg_soft_wwpn = 0L;
7424 lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt);
7425 lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
7426 lpfc_aer_support_init(phba, lpfc_aer_support);
7427 lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn);
7428 lpfc_request_firmware_upgrade_init(phba, lpfc_req_fw_upgrade);
7429 lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up);
7430 lpfc_delay_discovery_init(phba, lpfc_delay_discovery);
7431 lpfc_sli_mode_init(phba, lpfc_sli_mode);
7432 lpfc_enable_mds_diags_init(phba, lpfc_enable_mds_diags);
7433 lpfc_ras_fwlog_buffsize_init(phba, lpfc_ras_fwlog_buffsize);
7434 lpfc_ras_fwlog_level_init(phba, lpfc_ras_fwlog_level);
7435 lpfc_ras_fwlog_func_init(phba, lpfc_ras_fwlog_func);
7436
7437 return;
7438 }
7439
7440 /**
7441 * lpfc_nvme_mod_param_dep - Adjust module parameter value based on
7442 * dependencies between protocols and roles.
7443 * @phba: lpfc_hba pointer.
7444 **/
7445 void
lpfc_nvme_mod_param_dep(struct lpfc_hba * phba)7446 lpfc_nvme_mod_param_dep(struct lpfc_hba *phba)
7447 {
7448 int logit = 0;
7449
7450 if (phba->cfg_hdw_queue > phba->sli4_hba.num_present_cpu) {
7451 phba->cfg_hdw_queue = phba->sli4_hba.num_present_cpu;
7452 logit = 1;
7453 }
7454 if (phba->cfg_irq_chann > phba->sli4_hba.num_present_cpu) {
7455 phba->cfg_irq_chann = phba->sli4_hba.num_present_cpu;
7456 logit = 1;
7457 }
7458 if (phba->cfg_irq_chann > phba->cfg_hdw_queue) {
7459 phba->cfg_irq_chann = phba->cfg_hdw_queue;
7460 logit = 1;
7461 }
7462 if (logit)
7463 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
7464 "2006 Reducing Queues - CPU limitation: "
7465 "IRQ %d HDWQ %d\n",
7466 phba->cfg_irq_chann,
7467 phba->cfg_hdw_queue);
7468
7469 if (phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME &&
7470 phba->nvmet_support) {
7471 phba->cfg_enable_fc4_type &= ~LPFC_ENABLE_FCP;
7472
7473 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
7474 "6013 %s x%x fb_size x%x, fb_max x%x\n",
7475 "NVME Target PRLI ACC enable_fb ",
7476 phba->cfg_nvme_enable_fb,
7477 phba->cfg_nvmet_fb_size,
7478 LPFC_NVMET_FB_SZ_MAX);
7479
7480 if (phba->cfg_nvme_enable_fb == 0)
7481 phba->cfg_nvmet_fb_size = 0;
7482 else {
7483 if (phba->cfg_nvmet_fb_size > LPFC_NVMET_FB_SZ_MAX)
7484 phba->cfg_nvmet_fb_size = LPFC_NVMET_FB_SZ_MAX;
7485 }
7486
7487 if (!phba->cfg_nvmet_mrq)
7488 phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
7489
7490 /* Adjust lpfc_nvmet_mrq to avoid running out of WQE slots */
7491 if (phba->cfg_nvmet_mrq > phba->cfg_hdw_queue) {
7492 phba->cfg_nvmet_mrq = phba->cfg_hdw_queue;
7493 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
7494 "6018 Adjust lpfc_nvmet_mrq to %d\n",
7495 phba->cfg_nvmet_mrq);
7496 }
7497 if (phba->cfg_nvmet_mrq > LPFC_NVMET_MRQ_MAX)
7498 phba->cfg_nvmet_mrq = LPFC_NVMET_MRQ_MAX;
7499
7500 } else {
7501 /* Not NVME Target mode. Turn off Target parameters. */
7502 phba->nvmet_support = 0;
7503 phba->cfg_nvmet_mrq = 0;
7504 phba->cfg_nvmet_fb_size = 0;
7505 }
7506 }
7507
7508 /**
7509 * lpfc_get_vport_cfgparam - Used during port create, init the vport structure
7510 * @vport: lpfc_vport pointer.
7511 **/
7512 void
lpfc_get_vport_cfgparam(struct lpfc_vport * vport)7513 lpfc_get_vport_cfgparam(struct lpfc_vport *vport)
7514 {
7515 lpfc_log_verbose_init(vport, lpfc_log_verbose);
7516 lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth);
7517 lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth);
7518 lpfc_devloss_tmo_init(vport, lpfc_devloss_tmo);
7519 lpfc_nodev_tmo_init(vport, lpfc_nodev_tmo);
7520 lpfc_peer_port_login_init(vport, lpfc_peer_port_login);
7521 lpfc_restrict_login_init(vport, lpfc_restrict_login);
7522 lpfc_fcp_class_init(vport, lpfc_fcp_class);
7523 lpfc_use_adisc_init(vport, lpfc_use_adisc);
7524 lpfc_first_burst_size_init(vport, lpfc_first_burst_size);
7525 lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time);
7526 lpfc_discovery_threads_init(vport, lpfc_discovery_threads);
7527 lpfc_max_luns_init(vport, lpfc_max_luns);
7528 lpfc_scan_down_init(vport, lpfc_scan_down);
7529 lpfc_enable_da_id_init(vport, lpfc_enable_da_id);
7530 return;
7531 }
7532