drivers/scsi/lpfc/lpfc_attr.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2007 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/ctype.h>
  23 #include <linux/delay.h>
  24 #include <linux/pci.h>
  25 #include <linux/interrupt.h>
  26
  27 #include <scsi/scsi.h>
  28 #include <scsi/scsi_device.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_tcq.h>
  31 #include <scsi/scsi_transport_fc.h>
  32
  33 #include "lpfc_hw.h"
  34 #include "lpfc_sli.h"
  35 #include "lpfc_disc.h"
  36 #include "lpfc_scsi.h"
  37 #include "lpfc.h"
  38 #include "lpfc_logmsg.h"
  39 #include "lpfc_version.h"
  40 #include "lpfc_compat.h"
  41 #include "lpfc_crtn.h"
  42
  43 #define LPFC_DEF_DEVLOSS_TMO 30
  44 #define LPFC_MIN_DEVLOSS_TMO 1
  45 #define LPFC_MAX_DEVLOSS_TMO 255
  46
  47 static void
  48 lpfc_jedec_to_ascii(int incr, char hdw[])
  49 {
  50         int i, j;
  51         for (i = 0; i < 8; i++) {
  52                 j = (incr & 0xf);
  53                 if (j <= 9)
  54                         hdw[7 - i] = 0x30 +  j;
  55                  else
  56                         hdw[7 - i] = 0x61 + j - 10;
  57                 incr = (incr >> 4);
  58         }
  59         hdw[8] = 0;
  60         return;
  61 }
  62
  63 static ssize_t
  64 lpfc_drvr_version_show(struct class_device *cdev, char *buf)
  65 {
  66         return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
  67 }
  68
  69 static ssize_t
  70 management_version_show(struct class_device *cdev, char *buf)
  71 {
  72         return snprintf(buf, PAGE_SIZE, DFC_API_VERSION "\n");
  73 }
  74
  75 static ssize_t
  76 lpfc_info_show(struct class_device *cdev, char *buf)
  77 {
  78         struct Scsi_Host *host = class_to_shost(cdev);
  79         return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
  80 }
  81
  82 static ssize_t
  83 lpfc_serialnum_show(struct class_device *cdev, char *buf)
  84 {
  85         struct Scsi_Host *host = class_to_shost(cdev);
  86         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
  87         return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
  88 }
  89
  90 static ssize_t
  91 lpfc_modeldesc_show(struct class_device *cdev, char *buf)
  92 {
  93         struct Scsi_Host *host = class_to_shost(cdev);
  94         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
  95         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
  96 }
  97
  98 static ssize_t
  99 lpfc_modelname_show(struct class_device *cdev, char *buf)
 100 {
 101         struct Scsi_Host *host = class_to_shost(cdev);
 102         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 103         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
 104 }
 105
 106 static ssize_t
 107 lpfc_programtype_show(struct class_device *cdev, char *buf)
 108 {
 109         struct Scsi_Host *host = class_to_shost(cdev);
 110         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 111         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
 112 }
 113
 114 static ssize_t
 115 lpfc_portnum_show(struct class_device *cdev, char *buf)
 116 {
 117         struct Scsi_Host *host = class_to_shost(cdev);
 118         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 119         return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
 120 }
 121
 122 static ssize_t
 123 lpfc_fwrev_show(struct class_device *cdev, char *buf)
 124 {
 125         struct Scsi_Host *host = class_to_shost(cdev);
 126         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 127         char fwrev[32];
 128         lpfc_decode_firmware_rev(phba, fwrev, 1);
 129         return snprintf(buf, PAGE_SIZE, "%s\n",fwrev);
 130 }
 131
 132 static ssize_t
 133 lpfc_hdw_show(struct class_device *cdev, char *buf)
 134 {
 135         char hdw[9];
 136         struct Scsi_Host *host = class_to_shost(cdev);
 137         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 138         lpfc_vpd_t *vp = &phba->vpd;
 139         lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
 140         return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
 141 }
 142 static ssize_t
 143 lpfc_option_rom_version_show(struct class_device *cdev, char *buf)
 144 {
 145         struct Scsi_Host *host = class_to_shost(cdev);
 146         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 147         return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
 148 }
 149 static ssize_t
 150 lpfc_state_show(struct class_device *cdev, char *buf)
 151 {
 152         struct Scsi_Host *host = class_to_shost(cdev);
 153         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 154         int len = 0;
 155         switch (phba->hba_state) {
 156         case LPFC_STATE_UNKNOWN:
 157         case LPFC_WARM_START:
 158         case LPFC_INIT_START:
 159         case LPFC_INIT_MBX_CMDS:
 160         case LPFC_LINK_DOWN:
 161                 len += snprintf(buf + len, PAGE_SIZE-len, "Link Down\n");
 162                 break;
 163         case LPFC_LINK_UP:
 164         case LPFC_LOCAL_CFG_LINK:
 165                 len += snprintf(buf + len, PAGE_SIZE-len, "Link Up\n");
 166                 break;
 167         case LPFC_FLOGI:
 168         case LPFC_FABRIC_CFG_LINK:
 169         case LPFC_NS_REG:
 170         case LPFC_NS_QRY:
 171         case LPFC_BUILD_DISC_LIST:
 172         case LPFC_DISC_AUTH:
 173         case LPFC_CLEAR_LA:
 174                 len += snprintf(buf + len, PAGE_SIZE-len,
 175                                 "Link Up - Discovery\n");
 176                 break;
 177         case LPFC_HBA_READY:
 178                 len += snprintf(buf + len, PAGE_SIZE-len,
 179                                 "Link Up - Ready:\n");
 180                 if (phba->fc_topology == TOPOLOGY_LOOP) {
 181                         if (phba->fc_flag & FC_PUBLIC_LOOP)
 182                                 len += snprintf(buf + len, PAGE_SIZE-len,
 183                                                 "   Public Loop\n");
 184                         else
 185                                 len += snprintf(buf + len, PAGE_SIZE-len,
 186                                                 "   Private Loop\n");
 187                 } else {
 188                         if (phba->fc_flag & FC_FABRIC)
 189                                 len += snprintf(buf + len, PAGE_SIZE-len,
 190                                                 "   Fabric\n");
 191                         else
 192                                 len += snprintf(buf + len, PAGE_SIZE-len,
 193                                                 "   Point-2-Point\n");
 194                 }
 195         }
 196         return len;
 197 }
 198
 199 static ssize_t
 200 lpfc_num_discovered_ports_show(struct class_device *cdev, char *buf)
 201 {
 202         struct Scsi_Host *host = class_to_shost(cdev);
 203         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 204         return snprintf(buf, PAGE_SIZE, "%d\n", phba->fc_map_cnt +
 205                                                         phba->fc_unmap_cnt);
 206 }
 207
 208
 209 static int
 210 lpfc_issue_lip(struct Scsi_Host *host)
 211 {
 212         struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata;
 213         LPFC_MBOXQ_t *pmboxq;
 214         int mbxstatus = MBXERR_ERROR;
 215
 216         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
 217             (phba->fc_flag & FC_BLOCK_MGMT_IO) ||
 218             (phba->hba_state != LPFC_HBA_READY))
 219                 return -EPERM;
 220
 221         pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
 222
 223         if (!pmboxq)
 224                 return -ENOMEM;
 225
 226         memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 227         pmboxq->mb.mbxCommand = MBX_DOWN_LINK;
 228         pmboxq->mb.mbxOwner = OWN_HOST;
 229
 230         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
 231
 232         if ((mbxstatus == MBX_SUCCESS) && (pmboxq->mb.mbxStatus == 0)) {
 233                 memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 234                 lpfc_init_link(phba, pmboxq, phba->cfg_topology,
 235                                phba->cfg_link_speed);
 236                 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
 237                                                      phba->fc_ratov * 2);
 238         }
 239
 240         lpfc_set_loopback_flag(phba);
 241         if (mbxstatus == MBX_TIMEOUT)
 242                 pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 243         else
 244                 mempool_free(pmboxq, phba->mbox_mem_pool);
 245
 246         if (mbxstatus == MBXERR_ERROR)
 247                 return -EIO;
 248
 249         return 0;
 250 }
 251
 252 static int
 253 lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
 254 {
 255         struct completion online_compl;
 256         struct lpfc_sli_ring *pring;
 257         struct lpfc_sli *psli;
 258         int status = 0;
 259         int cnt = 0;
 260         int i;
 261
 262         init_completion(&online_compl);
 263         lpfc_workq_post_event(phba, &status, &online_compl,
 264                               LPFC_EVT_OFFLINE_PREP);
 265         wait_for_completion(&online_compl);
 266
 267         if (status != 0)
 268                 return -EIO;
 269
 270         psli = &phba->sli;
 271
 272         for (i = 0; i < psli->num_rings; i++) {
 273                 pring = &psli->ring[i];
 274                 /* The linkdown event takes 30 seconds to timeout. */
 275                 while (pring->txcmplq_cnt) {
 276                         msleep(10);
 277                         if (cnt++ > 3000) {
 278                                 lpfc_printf_log(phba,
 279                                         KERN_WARNING, LOG_INIT,
 280                                         "%d:0466 Outstanding IO when "
 281                                         "bringing Adapter offline\n",
 282                                         phba->brd_no);
 283                                 break;
 284                         }
 285                 }
 286         }
 287
 288         init_completion(&online_compl);
 289         lpfc_workq_post_event(phba, &status, &online_compl, type);
 290         wait_for_completion(&online_compl);
 291
 292         if (status != 0)
 293                 return -EIO;
 294
 295         return 0;
 296 }
 297
 298 static int
 299 lpfc_selective_reset(struct lpfc_hba *phba)
 300 {
 301         struct completion online_compl;
 302         int status = 0;
 303
 304         status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
 305
 306         if (status != 0)
 307                 return status;
 308
 309         init_completion(&online_compl);
 310         lpfc_workq_post_event(phba, &status, &online_compl,
 311                               LPFC_EVT_ONLINE);
 312         wait_for_completion(&online_compl);
 313
 314         if (status != 0)
 315                 return -EIO;
 316
 317         return 0;
 318 }
 319
 320 static ssize_t
 321 lpfc_issue_reset(struct class_device *cdev, const char *buf, size_t count)
 322 {
 323         struct Scsi_Host *host = class_to_shost(cdev);
 324         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 325         int status = -EINVAL;
 326
 327         if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
 328                 status = lpfc_selective_reset(phba);
 329
 330         if (status == 0)
 331                 return strlen(buf);
 332         else
 333                 return status;
 334 }
 335
 336 static ssize_t
 337 lpfc_nport_evt_cnt_show(struct class_device *cdev, char *buf)
 338 {
 339         struct Scsi_Host *host = class_to_shost(cdev);
 340         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 341         return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
 342 }
 343
 344 static ssize_t
 345 lpfc_board_mode_show(struct class_device *cdev, char *buf)
 346 {
 347         struct Scsi_Host *host = class_to_shost(cdev);
 348         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 349         char  * state;
 350
 351         if (phba->hba_state == LPFC_HBA_ERROR)
 352                 state = "error";
 353         else if (phba->hba_state == LPFC_WARM_START)
 354                 state = "warm start";
 355         else if (phba->hba_state == LPFC_INIT_START)
 356                 state = "offline";
 357         else
 358                 state = "online";
 359
 360         return snprintf(buf, PAGE_SIZE, "%s\n", state);
 361 }
 362
 363 static ssize_t
 364 lpfc_board_mode_store(struct class_device *cdev, const char *buf, size_t count)
 365 {
 366         struct Scsi_Host *host = class_to_shost(cdev);
 367         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 368         struct completion online_compl;
 369         int status=0;
 370
 371         init_completion(&online_compl);
 372
 373         if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
 374                 lpfc_workq_post_event(phba, &status, &online_compl,
 375                                       LPFC_EVT_ONLINE);
 376                 wait_for_completion(&online_compl);
 377         } else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
 378                 status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
 379         else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
 380                 status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
 381         else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
 382                 status = lpfc_do_offline(phba, LPFC_EVT_KILL);
 383         else
 384                 return -EINVAL;
 385
 386         if (!status)
 387                 return strlen(buf);
 388         else
 389                 return -EIO;
 390 }
 391
 392 static ssize_t
 393 lpfc_poll_show(struct class_device *cdev, char *buf)
 394 {
 395         struct Scsi_Host *host = class_to_shost(cdev);
 396         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 397
 398         return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
 399 }
 400
 401 static ssize_t
 402 lpfc_poll_store(struct class_device *cdev, const char *buf,
 403                 size_t count)
 404 {
 405         struct Scsi_Host *host = class_to_shost(cdev);
 406         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 407         uint32_t creg_val;
 408         uint32_t old_val;
 409         int val=0;
 410
 411         if (!isdigit(buf[0]))
 412                 return -EINVAL;
 413
 414         if (sscanf(buf, "%i", &val) != 1)
 415                 return -EINVAL;
 416
 417         if ((val & 0x3) != val)
 418                 return -EINVAL;
 419
 420         spin_lock_irq(phba->host->host_lock);
 421
 422         old_val = phba->cfg_poll;
 423
 424         if (val & ENABLE_FCP_RING_POLLING) {
 425                 if ((val & DISABLE_FCP_RING_INT) &&
 426                     !(old_val & DISABLE_FCP_RING_INT)) {
 427                         creg_val = readl(phba->HCregaddr);
 428                         creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
 429                         writel(creg_val, phba->HCregaddr);
 430                         readl(phba->HCregaddr); /* flush */
 431
 432                         lpfc_poll_start_timer(phba);
 433                 }
 434         } else if (val != 0x0) {
 435                 spin_unlock_irq(phba->host->host_lock);
 436                 return -EINVAL;
 437         }
 438
 439         if (!(val & DISABLE_FCP_RING_INT) &&
 440             (old_val & DISABLE_FCP_RING_INT))
 441         {
 442                 spin_unlock_irq(phba->host->host_lock);
 443                 del_timer(&phba->fcp_poll_timer);
 444                 spin_lock_irq(phba->host->host_lock);
 445                 creg_val = readl(phba->HCregaddr);
 446                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
 447                 writel(creg_val, phba->HCregaddr);
 448                 readl(phba->HCregaddr); /* flush */
 449         }
 450
 451         phba->cfg_poll = val;
 452
 453         spin_unlock_irq(phba->host->host_lock);
 454
 455         return strlen(buf);
 456 }
 457
 458 #define lpfc_param_show(attr)   \
 459 static ssize_t \
 460 lpfc_##attr##_show(struct class_device *cdev, char *buf) \
 461 { \
 462         struct Scsi_Host *host = class_to_shost(cdev);\
 463         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;\
 464         int val = 0;\
 465         val = phba->cfg_##attr;\
 466         return snprintf(buf, PAGE_SIZE, "%d\n",\
 467                         phba->cfg_##attr);\
 468 }
 469
 470 #define lpfc_param_hex_show(attr)       \
 471 static ssize_t \
 472 lpfc_##attr##_show(struct class_device *cdev, char *buf) \
 473 { \
 474         struct Scsi_Host *host = class_to_shost(cdev);\
 475         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;\
 476         int val = 0;\
 477         val = phba->cfg_##attr;\
 478         return snprintf(buf, PAGE_SIZE, "%#x\n",\
 479                         phba->cfg_##attr);\
 480 }
 481
 482 #define lpfc_param_init(attr, default, minval, maxval)  \
 483 static int \
 484 lpfc_##attr##_init(struct lpfc_hba *phba, int val) \
 485 { \
 486         if (val >= minval && val <= maxval) {\
 487                 phba->cfg_##attr = val;\
 488                 return 0;\
 489         }\
 490         lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
 491                         "%d:0449 lpfc_"#attr" attribute cannot be set to %d, "\
 492                         "allowed range is ["#minval", "#maxval"]\n", \
 493                         phba->brd_no, val); \
 494         phba->cfg_##attr = default;\
 495         return -EINVAL;\
 496 }
 497
 498 #define lpfc_param_set(attr, default, minval, maxval)   \
 499 static int \
 500 lpfc_##attr##_set(struct lpfc_hba *phba, int val) \
 501 { \
 502         if (val >= minval && val <= maxval) {\
 503                 phba->cfg_##attr = val;\
 504                 return 0;\
 505         }\
 506         lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
 507                         "%d:0450 lpfc_"#attr" attribute cannot be set to %d, "\
 508                         "allowed range is ["#minval", "#maxval"]\n", \
 509                         phba->brd_no, val); \
 510         return -EINVAL;\
 511 }
 512
 513 #define lpfc_param_store(attr)  \
 514 static ssize_t \
 515 lpfc_##attr##_store(struct class_device *cdev, const char *buf, size_t count) \
 516 { \
 517         struct Scsi_Host *host = class_to_shost(cdev);\
 518         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;\
 519         int val=0;\
 520         if (!isdigit(buf[0]))\
 521                 return -EINVAL;\
 522         if (sscanf(buf, "%i", &val) != 1)\
 523                 return -EINVAL;\
 524         if (lpfc_##attr##_set(phba, val) == 0) \
 525                 return strlen(buf);\
 526         else \
 527                 return -EINVAL;\
 528 }
 529
 530 #define LPFC_ATTR(name, defval, minval, maxval, desc) \
 531 static int lpfc_##name = defval;\
 532 module_param(lpfc_##name, int, 0);\
 533 MODULE_PARM_DESC(lpfc_##name, desc);\
 534 lpfc_param_init(name, defval, minval, maxval)
 535
 536 #define LPFC_ATTR_R(name, defval, minval, maxval, desc) \
 537 static int lpfc_##name = defval;\
 538 module_param(lpfc_##name, int, 0);\
 539 MODULE_PARM_DESC(lpfc_##name, desc);\
 540 lpfc_param_show(name)\
 541 lpfc_param_init(name, defval, minval, maxval)\
 542 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
 543
 544 #define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \
 545 static int lpfc_##name = defval;\
 546 module_param(lpfc_##name, int, 0);\
 547 MODULE_PARM_DESC(lpfc_##name, desc);\
 548 lpfc_param_show(name)\
 549 lpfc_param_init(name, defval, minval, maxval)\
 550 lpfc_param_set(name, defval, minval, maxval)\
 551 lpfc_param_store(name)\
 552 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
 553                          lpfc_##name##_show, lpfc_##name##_store)
 554
 555 #define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \
 556 static int lpfc_##name = defval;\
 557 module_param(lpfc_##name, int, 0);\
 558 MODULE_PARM_DESC(lpfc_##name, desc);\
 559 lpfc_param_hex_show(name)\
 560 lpfc_param_init(name, defval, minval, maxval)\
 561 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
 562
 563 #define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
 564 static int lpfc_##name = defval;\
 565 module_param(lpfc_##name, int, 0);\
 566 MODULE_PARM_DESC(lpfc_##name, desc);\
 567 lpfc_param_hex_show(name)\
 568 lpfc_param_init(name, defval, minval, maxval)\
 569 lpfc_param_set(name, defval, minval, maxval)\
 570 lpfc_param_store(name)\
 571 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
 572                          lpfc_##name##_show, lpfc_##name##_store)
 573
 574 static CLASS_DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
 575 static CLASS_DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
 576 static CLASS_DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
 577 static CLASS_DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
 578 static CLASS_DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
 579 static CLASS_DEVICE_ATTR(portnum, S_IRUGO, lpfc_portnum_show, NULL);
 580 static CLASS_DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
 581 static CLASS_DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
 582 static CLASS_DEVICE_ATTR(state, S_IRUGO, lpfc_state_show, NULL);
 583 static CLASS_DEVICE_ATTR(option_rom_version, S_IRUGO,
 584                                         lpfc_option_rom_version_show, NULL);
 585 static CLASS_DEVICE_ATTR(num_discovered_ports, S_IRUGO,
 586                                         lpfc_num_discovered_ports_show, NULL);
 587 static CLASS_DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
 588 static CLASS_DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show,
 589                          NULL);
 590 static CLASS_DEVICE_ATTR(management_version, S_IRUGO, management_version_show,
 591                          NULL);
 592 static CLASS_DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
 593                          lpfc_board_mode_show, lpfc_board_mode_store);
 594 static CLASS_DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
 595
 596
 597 static char *lpfc_soft_wwn_key = "C99G71SL8032A";
 598
 599 static ssize_t
 600 lpfc_soft_wwn_enable_store(struct class_device *cdev, const char *buf,
 601                                 size_t count)
 602 {
 603         struct Scsi_Host *host = class_to_shost(cdev);
 604         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 605         unsigned int cnt = count;
 606
 607         /*
 608          * We're doing a simple sanity check for soft_wwpn setting.
 609          * We require that the user write a specific key to enable
 610          * the soft_wwpn attribute to be settable. Once the attribute
 611          * is written, the enable key resets. If further updates are
 612          * desired, the key must be written again to re-enable the
 613          * attribute.
 614          *
 615          * The "key" is not secret - it is a hardcoded string shown
 616          * here. The intent is to protect against the random user or
 617          * application that is just writing attributes.
 618          */
 619
 620         /* count may include a LF at end of string */
 621         if (buf[cnt-1] == '\n')
 622                 cnt--;
 623
 624         if ((cnt != strlen(lpfc_soft_wwn_key)) ||
 625             (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
 626                 return -EINVAL;
 627
 628         phba->soft_wwn_enable = 1;
 629         return count;
 630 }
 631 static CLASS_DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
 632                                 lpfc_soft_wwn_enable_store);
 633
 634 static ssize_t
 635 lpfc_soft_wwpn_show(struct class_device *cdev, char *buf)
 636 {
 637         struct Scsi_Host *host = class_to_shost(cdev);
 638         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 639         return snprintf(buf, PAGE_SIZE, "0x%llx\n",
 640                         (unsigned long long)phba->cfg_soft_wwpn);
 641 }
 642
 643
 644 static ssize_t
 645 lpfc_soft_wwpn_store(struct class_device *cdev, const char *buf, size_t count)
 646 {
 647         struct Scsi_Host *host = class_to_shost(cdev);
 648         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 649         struct completion online_compl;
 650         int stat1=0, stat2=0;
 651         unsigned int i, j, cnt=count;
 652         u8 wwpn[8];
 653
 654         /* count may include a LF at end of string */
 655         if (buf[cnt-1] == '\n')
 656                 cnt--;
 657
 658         if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) ||
 659             ((cnt == 17) && (*buf++ != 'x')) ||
 660             ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
 661                 return -EINVAL;
 662
 663         phba->soft_wwn_enable = 0;
 664
 665         memset(wwpn, 0, sizeof(wwpn));
 666
 667         /* Validate and store the new name */
 668         for (i=0, j=0; i < 16; i++) {
 669                 if ((*buf >= 'a') && (*buf <= 'f'))
 670                         j = ((j << 4) | ((*buf++ -'a') + 10));
 671                 else if ((*buf >= 'A') && (*buf <= 'F'))
 672                         j = ((j << 4) | ((*buf++ -'A') + 10));
 673                 else if ((*buf >= '0') && (*buf <= '9'))
 674                         j = ((j << 4) | (*buf++ -'0'));
 675                 else
 676                         return -EINVAL;
 677                 if (i % 2) {
 678                         wwpn[i/2] = j & 0xff;
 679                         j = 0;
 680                 }
 681         }
 682         phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
 683         fc_host_port_name(host) = phba->cfg_soft_wwpn;
 684         if (phba->cfg_soft_wwnn)
 685                 fc_host_node_name(host) = phba->cfg_soft_wwnn;
 686
 687         dev_printk(KERN_NOTICE, &phba->pcidev->dev,
 688                    "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
 689
 690         stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
 691         if (stat1)
 692                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 693                         "%d:0463 lpfc_soft_wwpn attribute set failed to reinit "
 694                         "adapter - %d\n", phba->brd_no, stat1);
 695
 696         init_completion(&online_compl);
 697         lpfc_workq_post_event(phba, &stat2, &online_compl, LPFC_EVT_ONLINE);
 698         wait_for_completion(&online_compl);
 699         if (stat2)
 700                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 701                         "%d:0464 lpfc_soft_wwpn attribute set failed to reinit "
 702                         "adapter - %d\n", phba->brd_no, stat2);
 703
 704         return (stat1 || stat2) ? -EIO : count;
 705 }
 706 static CLASS_DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,\
 707                          lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
 708
 709 static ssize_t
 710 lpfc_soft_wwnn_show(struct class_device *cdev, char *buf)
 711 {
 712         struct Scsi_Host *host = class_to_shost(cdev);
 713         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 714         return snprintf(buf, PAGE_SIZE, "0x%llx\n",
 715                         (unsigned long long)phba->cfg_soft_wwnn);
 716 }
 717
 718
 719 static ssize_t
 720 lpfc_soft_wwnn_store(struct class_device *cdev, const char *buf, size_t count)
 721 {
 722         struct Scsi_Host *host = class_to_shost(cdev);
 723         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 724         unsigned int i, j, cnt=count;
 725         u8 wwnn[8];
 726
 727         /* count may include a LF at end of string */
 728         if (buf[cnt-1] == '\n')
 729                 cnt--;
 730
 731         if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) ||
 732             ((cnt == 17) && (*buf++ != 'x')) ||
 733             ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
 734                 return -EINVAL;
 735
 736         /*
 737          * Allow wwnn to be set many times, as long as the enable is set.
 738          * However, once the wwpn is set, everything locks.
 739          */
 740
 741         memset(wwnn, 0, sizeof(wwnn));
 742
 743         /* Validate and store the new name */
 744         for (i=0, j=0; i < 16; i++) {
 745                 if ((*buf >= 'a') && (*buf <= 'f'))
 746                         j = ((j << 4) | ((*buf++ -'a') + 10));
 747                 else if ((*buf >= 'A') && (*buf <= 'F'))
 748                         j = ((j << 4) | ((*buf++ -'A') + 10));
 749                 else if ((*buf >= '0') && (*buf <= '9'))
 750                         j = ((j << 4) | (*buf++ -'0'));
 751                 else
 752                         return -EINVAL;
 753                 if (i % 2) {
 754                         wwnn[i/2] = j & 0xff;
 755                         j = 0;
 756                 }
 757         }
 758         phba->cfg_soft_wwnn = wwn_to_u64(wwnn);
 759
 760         dev_printk(KERN_NOTICE, &phba->pcidev->dev,
 761                    "lpfc%d: soft_wwnn set. Value will take effect upon "
 762                    "setting of the soft_wwpn\n", phba->brd_no);
 763
 764         return count;
 765 }
 766 static CLASS_DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,\
 767                          lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
 768
 769
 770 static int lpfc_poll = 0;
 771 module_param(lpfc_poll, int, 0);
 772 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
 773                  " 0 - none,"
 774                  " 1 - poll with interrupts enabled"
 775                  " 3 - poll and disable FCP ring interrupts");
 776
 777 static CLASS_DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
 778                          lpfc_poll_show, lpfc_poll_store);
 779
 780 /*
 781 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
 782 # until the timer expires. Value range is [0,255]. Default value is 30.
 783 */
 784 static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
 785 static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO;
 786 module_param(lpfc_nodev_tmo, int, 0);
 787 MODULE_PARM_DESC(lpfc_nodev_tmo,
 788                  "Seconds driver will hold I/O waiting "
 789                  "for a device to come back");
 790 static ssize_t
 791 lpfc_nodev_tmo_show(struct class_device *cdev, char *buf)
 792 {
 793         struct Scsi_Host *host = class_to_shost(cdev);
 794         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 795         int val = 0;
 796         val = phba->cfg_devloss_tmo;
 797         return snprintf(buf, PAGE_SIZE, "%d\n",
 798                         phba->cfg_devloss_tmo);
 799 }
 800
 801 static int
 802 lpfc_nodev_tmo_init(struct lpfc_hba *phba, int val)
 803 {
 804         static int warned;
 805         if (phba->cfg_devloss_tmo !=  LPFC_DEF_DEVLOSS_TMO) {
 806                 phba->cfg_nodev_tmo = phba->cfg_devloss_tmo;
 807                 if (!warned && val != LPFC_DEF_DEVLOSS_TMO) {
 808                         warned = 1;
 809                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 810                                         "%d:0402 Ignoring nodev_tmo module "
 811                                         "parameter because devloss_tmo is"
 812                                         " set.\n",
 813                                         phba->brd_no);
 814                 }
 815                 return 0;
 816         }
 817
 818         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 819                 phba->cfg_nodev_tmo = val;
 820                 phba->cfg_devloss_tmo = val;
 821                 return 0;
 822         }
 823         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 824                         "%d:0400 lpfc_nodev_tmo attribute cannot be set to %d, "
 825                         "allowed range is [%d, %d]\n",
 826                         phba->brd_no, val,
 827                         LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
 828         phba->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
 829         return -EINVAL;
 830 }
 831
 832 static void
 833 lpfc_update_rport_devloss_tmo(struct lpfc_hba *phba)
 834 {
 835         struct lpfc_nodelist  *ndlp;
 836
 837         spin_lock_irq(phba->host->host_lock);
 838         list_for_each_entry(ndlp, &phba->fc_nodes, nlp_listp)
 839                 if (ndlp->rport)
 840                         ndlp->rport->dev_loss_tmo = phba->cfg_devloss_tmo;
 841         spin_unlock_irq(phba->host->host_lock);
 842 }
 843
 844 static int
 845 lpfc_nodev_tmo_set(struct lpfc_hba *phba, int val)
 846 {
 847         if (phba->dev_loss_tmo_changed ||
 848                 (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
 849                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 850                                 "%d:0401 Ignoring change to nodev_tmo "
 851                                 "because devloss_tmo is set.\n",
 852                                 phba->brd_no);
 853                 return 0;
 854         }
 855
 856         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 857                 phba->cfg_nodev_tmo = val;
 858                 phba->cfg_devloss_tmo = val;
 859                 lpfc_update_rport_devloss_tmo(phba);
 860                 return 0;
 861         }
 862
 863         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 864                         "%d:0403 lpfc_nodev_tmo attribute cannot be set to %d, "
 865                         "allowed range is [%d, %d]\n",
 866                         phba->brd_no, val, LPFC_MIN_DEVLOSS_TMO,
 867                         LPFC_MAX_DEVLOSS_TMO);
 868         return -EINVAL;
 869 }
 870
 871 lpfc_param_store(nodev_tmo)
 872
 873 static CLASS_DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
 874                          lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
 875
 876 /*
 877 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
 878 # disappear until the timer expires. Value range is [0,255]. Default
 879 # value is 30.
 880 */
 881 module_param(lpfc_devloss_tmo, int, 0);
 882 MODULE_PARM_DESC(lpfc_devloss_tmo,
 883                  "Seconds driver will hold I/O waiting "
 884                  "for a device to come back");
 885 lpfc_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
 886                 LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
 887 lpfc_param_show(devloss_tmo)
 888 static int
 889 lpfc_devloss_tmo_set(struct lpfc_hba *phba, int val)
 890 {
 891         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 892                 phba->cfg_nodev_tmo = val;
 893                 phba->cfg_devloss_tmo = val;
 894                 phba->dev_loss_tmo_changed = 1;
 895                 lpfc_update_rport_devloss_tmo(phba);
 896                 return 0;
 897         }
 898
 899         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 900                         "%d:0404 lpfc_devloss_tmo attribute cannot be set to"
 901                         " %d, allowed range is [%d, %d]\n",
 902                         phba->brd_no, val, LPFC_MIN_DEVLOSS_TMO,
 903                         LPFC_MAX_DEVLOSS_TMO);
 904         return -EINVAL;
 905 }
 906
 907 lpfc_param_store(devloss_tmo)
 908 static CLASS_DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
 909         lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
 910
 911 /*
 912 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being
 913 # deluged with LOTS of information.
 914 # You can set a bit mask to record specific types of verbose messages:
 915 #
 916 # LOG_ELS                       0x1        ELS events
 917 # LOG_DISCOVERY                 0x2        Link discovery events
 918 # LOG_MBOX                      0x4        Mailbox events
 919 # LOG_INIT                      0x8        Initialization events
 920 # LOG_LINK_EVENT                0x10       Link events
 921 # LOG_FCP                       0x40       FCP traffic history
 922 # LOG_NODE                      0x80       Node table events
 923 # LOG_MISC                      0x400      Miscellaneous events
 924 # LOG_SLI                       0x800      SLI events
 925 # LOG_FCP_ERROR                 0x1000     Only log FCP errors
 926 # LOG_LIBDFC                    0x2000     LIBDFC events
 927 # LOG_ALL_MSG                   0xffff     LOG all messages
 928 */
 929 LPFC_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffff, "Verbose logging bit-mask");
 930
 931 /*
 932 # lun_queue_depth:  This parameter is used to limit the number of outstanding
 933 # commands per FCP LUN. Value range is [1,128]. Default value is 30.
 934 */
 935 LPFC_ATTR_R(lun_queue_depth, 30, 1, 128,
 936             "Max number of FCP commands we can queue to a specific LUN");
 937
 938 /*
 939 # hba_queue_depth:  This parameter is used to limit the number of outstanding
 940 # commands per lpfc HBA. Value range is [32,8192]. If this parameter
 941 # value is greater than the maximum number of exchanges supported by the HBA,
 942 # then maximum number of exchanges supported by the HBA is used to determine
 943 # the hba_queue_depth.
 944 */
 945 LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192,
 946             "Max number of FCP commands we can queue to a lpfc HBA");
 947
 948 /*
 949 # Some disk devices have a "select ID" or "select Target" capability.
 950 # From a protocol standpoint "select ID" usually means select the
 951 # Fibre channel "ALPA".  In the FC-AL Profile there is an "informative
 952 # annex" which contains a table that maps a "select ID" (a number
 953 # between 0 and 7F) to an ALPA.  By default, for compatibility with
 954 # older drivers, the lpfc driver scans this table from low ALPA to high
 955 # ALPA.
 956 #
 957 # Turning on the scan-down variable (on  = 1, off = 0) will
 958 # cause the lpfc driver to use an inverted table, effectively
 959 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
 960 #
 961 # (Note: This "select ID" functionality is a LOOP ONLY characteristic
 962 # and will not work across a fabric. Also this parameter will take
 963 # effect only in the case when ALPA map is not available.)
 964 */
 965 LPFC_ATTR_R(scan_down, 1, 0, 1,
 966              "Start scanning for devices from highest ALPA to lowest");
 967
 968 /*
 969 # lpfc_topology:  link topology for init link
 970 #            0x0  = attempt loop mode then point-to-point
 971 #            0x01 = internal loopback mode
 972 #            0x02 = attempt point-to-point mode only
 973 #            0x04 = attempt loop mode only
 974 #            0x06 = attempt point-to-point mode then loop
 975 # Set point-to-point mode if you want to run as an N_Port.
 976 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
 977 # Default value is 0.
 978 */
 979 LPFC_ATTR_RW(topology, 0, 0, 6, "Select Fibre Channel topology");
 980
 981 /*
 982 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
 983 # connection.
 984 #       0  = auto select (default)
 985 #       1  = 1 Gigabaud
 986 #       2  = 2 Gigabaud
 987 #       4  = 4 Gigabaud
 988 #       8  = 8 Gigabaud
 989 # Value range is [0,8]. Default value is 0.
 990 */
 991 LPFC_ATTR_R(link_speed, 0, 0, 8, "Select link speed");
 992
 993 /*
 994 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
 995 # Value range is [2,3]. Default value is 3.
 996 */
 997 LPFC_ATTR_R(fcp_class, 3, 2, 3,
 998              "Select Fibre Channel class of service for FCP sequences");
 999
1000 /*
1001 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
1002 # is [0,1]. Default value is 0.
1003 */
1004 LPFC_ATTR_RW(use_adisc, 0, 0, 1,
1005              "Use ADISC on rediscovery to authenticate FCP devices");
1006
1007 /*
1008 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
1009 # range is [0,1]. Default value is 0.
1010 */
1011 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
1012
1013 /*
1014 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
1015 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take
1016 # value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
1017 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if
1018 # cr_delay is set to 0.
1019 */
1020 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
1021                 "interrupt response is generated");
1022
1023 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
1024                 "interrupt response is generated");
1025
1026 /*
1027 # lpfc_multi_ring_support:  Determines how many rings to spread available
1028 # cmd/rsp IOCB entries across.
1029 # Value range is [1,2]. Default value is 1.
1030 */
1031 LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
1032                 "SLI rings to spread IOCB entries across");
1033
1034 /*
1035 # lpfc_multi_ring_rctl:  If lpfc_multi_ring_support is enabled, this
1036 # identifies what rctl value to configure the additional ring for.
1037 # Value range is [1,0xff]. Default value is 4 (Unsolicated Data).
1038 */
1039 LPFC_ATTR_R(multi_ring_rctl, FC_UNSOL_DATA, 1,
1040              255, "Identifies RCTL for additional ring configuration");
1041
1042 /*
1043 # lpfc_multi_ring_type:  If lpfc_multi_ring_support is enabled, this
1044 # identifies what type value to configure the additional ring for.
1045 # Value range is [1,0xff]. Default value is 5 (LLC/SNAP).
1046 */
1047 LPFC_ATTR_R(multi_ring_type, FC_LLC_SNAP, 1,
1048              255, "Identifies TYPE for additional ring configuration");
1049
1050 /*
1051 # lpfc_fdmi_on: controls FDMI support.
1052 #       0 = no FDMI support
1053 #       1 = support FDMI without attribute of hostname
1054 #       2 = support FDMI with attribute of hostname
1055 # Value range [0,2]. Default value is 0.
1056 */
1057 LPFC_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support");
1058
1059 /*
1060 # Specifies the maximum number of ELS cmds we can have outstanding (for
1061 # discovery). Value range is [1,64]. Default value = 32.
1062 */
1063 LPFC_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
1064                  "during discovery");
1065
1066 /*
1067 # lpfc_max_luns: maximum allowed LUN.
1068 # Value range is [0,65535]. Default value is 255.
1069 # NOTE: The SCSI layer might probe all allowed LUN on some old targets.
1070 */
1071 LPFC_ATTR_R(max_luns, 255, 0, 65535,
1072              "Maximum allowed LUN");
1073
1074 /*
1075 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
1076 # Value range is [1,255], default value is 10.
1077 */
1078 LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
1079              "Milliseconds driver will wait between polling FCP ring");
1080
1081 /*
1082 # lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
1083 #               support this feature
1084 #       0  = MSI disabled (default)
1085 #       1  = MSI enabled
1086 # Value range is [0,1]. Default value is 0.
1087 */
1088 LPFC_ATTR_R(use_msi, 0, 0, 1, "Use Message Signaled Interrupts, if possible");
1089
1090
1091 struct class_device_attribute *lpfc_host_attrs[] = {
1092         &class_device_attr_info,
1093         &class_device_attr_serialnum,
1094         &class_device_attr_modeldesc,
1095         &class_device_attr_modelname,
1096         &class_device_attr_programtype,
1097         &class_device_attr_portnum,
1098         &class_device_attr_fwrev,
1099         &class_device_attr_hdw,
1100         &class_device_attr_option_rom_version,
1101         &class_device_attr_state,
1102         &class_device_attr_num_discovered_ports,
1103         &class_device_attr_lpfc_drvr_version,
1104         &class_device_attr_lpfc_log_verbose,
1105         &class_device_attr_lpfc_lun_queue_depth,
1106         &class_device_attr_lpfc_hba_queue_depth,
1107         &class_device_attr_lpfc_nodev_tmo,
1108         &class_device_attr_lpfc_devloss_tmo,
1109         &class_device_attr_lpfc_fcp_class,
1110         &class_device_attr_lpfc_use_adisc,
1111         &class_device_attr_lpfc_ack0,
1112         &class_device_attr_lpfc_topology,
1113         &class_device_attr_lpfc_scan_down,
1114         &class_device_attr_lpfc_link_speed,
1115         &class_device_attr_lpfc_cr_delay,
1116         &class_device_attr_lpfc_cr_count,
1117         &class_device_attr_lpfc_multi_ring_support,
1118         &class_device_attr_lpfc_multi_ring_rctl,
1119         &class_device_attr_lpfc_multi_ring_type,
1120         &class_device_attr_lpfc_fdmi_on,
1121         &class_device_attr_lpfc_max_luns,
1122         &class_device_attr_nport_evt_cnt,
1123         &class_device_attr_management_version,
1124         &class_device_attr_board_mode,
1125         &class_device_attr_issue_reset,
1126         &class_device_attr_lpfc_poll,
1127         &class_device_attr_lpfc_poll_tmo,
1128         &class_device_attr_lpfc_use_msi,
1129         &class_device_attr_lpfc_soft_wwnn,
1130         &class_device_attr_lpfc_soft_wwpn,
1131         &class_device_attr_lpfc_soft_wwn_enable,
1132         NULL,
1133 };
1134
1135 static ssize_t
1136 sysfs_ctlreg_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
1137 {
1138         size_t buf_off;
1139         struct Scsi_Host *host = class_to_shost(container_of(kobj,
1140                                              struct class_device, kobj));
1141         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
1142
1143         if ((off + count) > FF_REG_AREA_SIZE)
1144                 return -ERANGE;
1145
1146         if (count == 0) return 0;
1147
1148         if (off % 4 || count % 4 || (unsigned long)buf % 4)
1149                 return -EINVAL;
1150
1151         spin_lock_irq(phba->host->host_lock);
1152
1153         if (!(phba->fc_flag & FC_OFFLINE_MODE)) {
1154                 spin_unlock_irq(phba->host->host_lock);
1155                 return -EPERM;
1156         }
1157
1158         for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t))
1159                 writel(*((uint32_t *)(buf + buf_off)),
1160                        phba->ctrl_regs_memmap_p + off + buf_off);
1161
1162         spin_unlock_irq(phba->host->host_lock);
1163
1164         return count;
1165 }
1166
1167 static ssize_t
1168 sysfs_ctlreg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
1169 {
1170         size_t buf_off;
1171         uint32_t * tmp_ptr;
1172         struct Scsi_Host *host = class_to_shost(container_of(kobj,
1173                                              struct class_device, kobj));
1174         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
1175
1176         if (off > FF_REG_AREA_SIZE)
1177                 return -ERANGE;
1178
1179         if ((off + count) > FF_REG_AREA_SIZE)
1180                 count = FF_REG_AREA_SIZE - off;
1181
1182         if (count == 0) return 0;
1183
1184         if (off % 4 || count % 4 || (unsigned long)buf % 4)
1185                 return -EINVAL;
1186
1187         spin_lock_irq(phba->host->host_lock);
1188
1189         for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
1190                 tmp_ptr = (uint32_t *)(buf + buf_off);
1191                 *tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
1192         }
1193
1194         spin_unlock_irq(phba->host->host_lock);
1195
1196         return count;
1197 }
1198
1199 static struct bin_attribute sysfs_ctlreg_attr = {
1200         .attr = {
1201                 .name = "ctlreg",
1202                 .mode = S_IRUSR | S_IWUSR,
1203         },
1204         .size = 256,
1205         .read = sysfs_ctlreg_read,
1206         .write = sysfs_ctlreg_write,
1207 };
1208
1209
1210 static void
1211 sysfs_mbox_idle (struct lpfc_hba * phba)
1212 {
1213         phba->sysfs_mbox.state = SMBOX_IDLE;
1214         phba->sysfs_mbox.offset = 0;
1215
1216         if (phba->sysfs_mbox.mbox) {
1217                 mempool_free(phba->sysfs_mbox.mbox,
1218                              phba->mbox_mem_pool);
1219                 phba->sysfs_mbox.mbox = NULL;
1220         }
1221 }
1222
1223 static ssize_t
1224 sysfs_mbox_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
1225 {
1226         struct Scsi_Host * host =
1227                 class_to_shost(container_of(kobj, struct class_device, kobj));
1228         struct lpfc_hba * phba = (struct lpfc_hba*)host->hostdata;
1229         struct lpfcMboxq * mbox = NULL;
1230
1231         if ((count + off) > MAILBOX_CMD_SIZE)
1232                 return -ERANGE;
1233
1234         if (off % 4 ||  count % 4 || (unsigned long)buf % 4)
1235                 return -EINVAL;
1236
1237         if (count == 0)
1238                 return 0;
1239
1240         if (off == 0) {
1241                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1242                 if (!mbox)
1243                         return -ENOMEM;
1244                 memset(mbox, 0, sizeof (LPFC_MBOXQ_t));
1245         }
1246
1247         spin_lock_irq(host->host_lock);
1248
1249         if (off == 0) {
1250                 if (phba->sysfs_mbox.mbox)
1251                         mempool_free(mbox, phba->mbox_mem_pool);
1252                 else
1253                         phba->sysfs_mbox.mbox = mbox;
1254                 phba->sysfs_mbox.state = SMBOX_WRITING;
1255         } else {
1256                 if (phba->sysfs_mbox.state  != SMBOX_WRITING ||
1257                     phba->sysfs_mbox.offset != off           ||
1258                     phba->sysfs_mbox.mbox   == NULL ) {
1259                         sysfs_mbox_idle(phba);
1260                         spin_unlock_irq(host->host_lock);
1261                         return -EAGAIN;
1262                 }
1263         }
1264
1265         memcpy((uint8_t *) & phba->sysfs_mbox.mbox->mb + off,
1266                buf, count);
1267
1268         phba->sysfs_mbox.offset = off + count;
1269
1270         spin_unlock_irq(host->host_lock);
1271
1272         return count;
1273 }
1274
1275 static ssize_t
1276 sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
1277 {
1278         struct Scsi_Host *host =
1279                 class_to_shost(container_of(kobj, struct class_device,
1280                                             kobj));
1281         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
1282         int rc;
1283
1284         if (off > MAILBOX_CMD_SIZE)
1285                 return -ERANGE;
1286
1287         if ((count + off) > MAILBOX_CMD_SIZE)
1288                 count = MAILBOX_CMD_SIZE - off;
1289
1290         if (off % 4 ||  count % 4 || (unsigned long)buf % 4)
1291                 return -EINVAL;
1292
1293         if (off && count == 0)
1294                 return 0;
1295
1296         spin_lock_irq(phba->host->host_lock);
1297
1298         if (off == 0 &&
1299             phba->sysfs_mbox.state  == SMBOX_WRITING &&
1300             phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {
1301
1302                 switch (phba->sysfs_mbox.mbox->mb.mbxCommand) {
1303                         /* Offline only */
1304                 case MBX_WRITE_NV:
1305                 case MBX_INIT_LINK:
1306                 case MBX_DOWN_LINK:
1307                 case MBX_CONFIG_LINK:
1308                 case MBX_CONFIG_RING:
1309                 case MBX_RESET_RING:
1310                 case MBX_UNREG_LOGIN:
1311                 case MBX_CLEAR_LA:
1312                 case MBX_DUMP_CONTEXT:
1313                 case MBX_RUN_DIAGS:
1314                 case MBX_RESTART:
1315                 case MBX_FLASH_WR_ULA:
1316                 case MBX_SET_MASK:
1317                 case MBX_SET_SLIM:
1318                 case MBX_SET_DEBUG:
1319                         if (!(phba->fc_flag & FC_OFFLINE_MODE)) {
1320                                 printk(KERN_WARNING "mbox_read:Command 0x%x "
1321                                        "is illegal in on-line state\n",
1322                                        phba->sysfs_mbox.mbox->mb.mbxCommand);
1323                                 sysfs_mbox_idle(phba);
1324                                 spin_unlock_irq(phba->host->host_lock);
1325                                 return -EPERM;
1326                         }
1327                 case MBX_LOAD_SM:
1328                 case MBX_READ_NV:
1329                 case MBX_READ_CONFIG:
1330                 case MBX_READ_RCONFIG:
1331                 case MBX_READ_STATUS:
1332                 case MBX_READ_XRI:
1333                 case MBX_READ_REV:
1334                 case MBX_READ_LNK_STAT:
1335                 case MBX_DUMP_MEMORY:
1336                 case MBX_DOWN_LOAD:
1337                 case MBX_UPDATE_CFG:
1338                 case MBX_KILL_BOARD:
1339                 case MBX_LOAD_AREA:
1340                 case MBX_LOAD_EXP_ROM:
1341                 case MBX_BEACON:
1342                 case MBX_DEL_LD_ENTRY:
1343                         break;
1344                 case MBX_READ_SPARM64:
1345                 case MBX_READ_LA:
1346                 case MBX_READ_LA64:
1347                 case MBX_REG_LOGIN:
1348                 case MBX_REG_LOGIN64:
1349                 case MBX_CONFIG_PORT:
1350                 case MBX_RUN_BIU_DIAG:
1351                         printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n",
1352                                phba->sysfs_mbox.mbox->mb.mbxCommand);
1353                         sysfs_mbox_idle(phba);
1354                         spin_unlock_irq(phba->host->host_lock);
1355                         return -EPERM;
1356                 default:
1357                         printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n",
1358                                phba->sysfs_mbox.mbox->mb.mbxCommand);
1359                         sysfs_mbox_idle(phba);
1360                         spin_unlock_irq(phba->host->host_lock);
1361                         return -EPERM;
1362                 }
1363
1364                 if (phba->fc_flag & FC_BLOCK_MGMT_IO) {
1365                         sysfs_mbox_idle(phba);
1366                         spin_unlock_irq(host->host_lock);
1367                         return  -EAGAIN;
1368                 }
1369
1370                 if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1371                     (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE))){
1372
1373                         spin_unlock_irq(phba->host->host_lock);
1374                         rc = lpfc_sli_issue_mbox (phba,
1375                                                   phba->sysfs_mbox.mbox,
1376                                                   MBX_POLL);
1377                         spin_lock_irq(phba->host->host_lock);
1378
1379                 } else {
1380                         spin_unlock_irq(phba->host->host_lock);
1381                         rc = lpfc_sli_issue_mbox_wait (phba,
1382                                                        phba->sysfs_mbox.mbox,
1383                                 lpfc_mbox_tmo_val(phba,
1384                                     phba->sysfs_mbox.mbox->mb.mbxCommand) * HZ);
1385                         spin_lock_irq(phba->host->host_lock);
1386                 }
1387
1388                 if (rc != MBX_SUCCESS) {
1389                         if (rc == MBX_TIMEOUT) {
1390                                 phba->sysfs_mbox.mbox->mbox_cmpl =
1391                                         lpfc_sli_def_mbox_cmpl;
1392                                 phba->sysfs_mbox.mbox = NULL;
1393                         }
1394                         sysfs_mbox_idle(phba);
1395                         spin_unlock_irq(host->host_lock);
1396                         return  (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
1397                 }
1398                 phba->sysfs_mbox.state = SMBOX_READING;
1399         }
1400         else if (phba->sysfs_mbox.offset != off ||
1401                  phba->sysfs_mbox.state  != SMBOX_READING) {
1402                 printk(KERN_WARNING  "mbox_read: Bad State\n");
1403                 sysfs_mbox_idle(phba);
1404                 spin_unlock_irq(host->host_lock);
1405                 return -EAGAIN;
1406         }
1407
1408         memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);
1409
1410         phba->sysfs_mbox.offset = off + count;
1411
1412         if (phba->sysfs_mbox.offset == MAILBOX_CMD_SIZE)
1413                 sysfs_mbox_idle(phba);
1414
1415         spin_unlock_irq(phba->host->host_lock);
1416
1417         return count;
1418 }
1419
1420 static struct bin_attribute sysfs_mbox_attr = {
1421         .attr = {
1422                 .name = "mbox",
1423                 .mode = S_IRUSR | S_IWUSR,
1424         },
1425         .size = MAILBOX_CMD_SIZE,
1426         .read = sysfs_mbox_read,
1427         .write = sysfs_mbox_write,
1428 };
1429
1430 int
1431 lpfc_alloc_sysfs_attr(struct lpfc_hba *phba)
1432 {
1433         struct Scsi_Host *host = phba->host;
1434         int error;
1435
1436         error = sysfs_create_bin_file(&host->shost_classdev.kobj,
1437                                                         &sysfs_ctlreg_attr);
1438         if (error)
1439                 goto out;
1440
1441         error = sysfs_create_bin_file(&host->shost_classdev.kobj,
1442                                                         &sysfs_mbox_attr);
1443         if (error)
1444                 goto out_remove_ctlreg_attr;
1445
1446         return 0;
1447 out_remove_ctlreg_attr:
1448         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_ctlreg_attr);
1449 out:
1450         return error;
1451 }
1452
1453 void
1454 lpfc_free_sysfs_attr(struct lpfc_hba *phba)
1455 {
1456         struct Scsi_Host *host = phba->host;
1457
1458         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_mbox_attr);
1459         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_ctlreg_attr);
1460 }
1461
1462
1463 /*
1464  * Dynamic FC Host Attributes Support
1465  */
1466
1467 static void
1468 lpfc_get_host_port_id(struct Scsi_Host *shost)
1469 {
1470         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1471         /* note: fc_myDID already in cpu endianness */
1472         fc_host_port_id(shost) = phba->fc_myDID;
1473 }
1474
1475 static void
1476 lpfc_get_host_port_type(struct Scsi_Host *shost)
1477 {
1478         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1479
1480         spin_lock_irq(shost->host_lock);
1481
1482         if (phba->hba_state == LPFC_HBA_READY) {
1483                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1484                         if (phba->fc_flag & FC_PUBLIC_LOOP)
1485                                 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
1486                         else
1487                                 fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
1488                 } else {
1489                         if (phba->fc_flag & FC_FABRIC)
1490                                 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
1491                         else
1492                                 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
1493                 }
1494         } else
1495                 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
1496
1497         spin_unlock_irq(shost->host_lock);
1498 }
1499
1500 static void
1501 lpfc_get_host_port_state(struct Scsi_Host *shost)
1502 {
1503         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1504
1505         spin_lock_irq(shost->host_lock);
1506
1507         if (phba->fc_flag & FC_OFFLINE_MODE)
1508                 fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
1509         else {
1510                 switch (phba->hba_state) {
1511                 case LPFC_STATE_UNKNOWN:
1512                 case LPFC_WARM_START:
1513                 case LPFC_INIT_START:
1514                 case LPFC_INIT_MBX_CMDS:
1515                 case LPFC_LINK_DOWN:
1516                         fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
1517                         break;
1518                 case LPFC_LINK_UP:
1519                 case LPFC_LOCAL_CFG_LINK:
1520                 case LPFC_FLOGI:
1521                 case LPFC_FABRIC_CFG_LINK:
1522                 case LPFC_NS_REG:
1523                 case LPFC_NS_QRY:
1524                 case LPFC_BUILD_DISC_LIST:
1525                 case LPFC_DISC_AUTH:
1526                 case LPFC_CLEAR_LA:
1527                 case LPFC_HBA_READY:
1528                         /* Links up, beyond this port_type reports state */
1529                         fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
1530                         break;
1531                 case LPFC_HBA_ERROR:
1532                         fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
1533                         break;
1534                 default:
1535                         fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
1536                         break;
1537                 }
1538         }
1539
1540         spin_unlock_irq(shost->host_lock);
1541 }
1542
1543 static void
1544 lpfc_get_host_speed(struct Scsi_Host *shost)
1545 {
1546         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1547
1548         spin_lock_irq(shost->host_lock);
1549
1550         if (phba->hba_state == LPFC_HBA_READY) {
1551                 switch(phba->fc_linkspeed) {
1552                         case LA_1GHZ_LINK:
1553                                 fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
1554                         break;
1555                         case LA_2GHZ_LINK:
1556                                 fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
1557                         break;
1558                         case LA_4GHZ_LINK:
1559                                 fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
1560                         break;
1561                         case LA_8GHZ_LINK:
1562                                 fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
1563                         break;
1564                         default:
1565                                 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
1566                         break;
1567                 }
1568         }
1569
1570         spin_unlock_irq(shost->host_lock);
1571 }
1572
1573 static void
1574 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
1575 {
1576         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1577         u64 node_name;
1578
1579         spin_lock_irq(shost->host_lock);
1580
1581         if ((phba->fc_flag & FC_FABRIC) ||
1582             ((phba->fc_topology == TOPOLOGY_LOOP) &&
1583              (phba->fc_flag & FC_PUBLIC_LOOP)))
1584                 node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
1585         else
1586                 /* fabric is local port if there is no F/FL_Port */
1587                 node_name = wwn_to_u64(phba->fc_nodename.u.wwn);
1588
1589         spin_unlock_irq(shost->host_lock);
1590
1591         fc_host_fabric_name(shost) = node_name;
1592 }
1593
1594 static void
1595 lpfc_get_host_symbolic_name (struct Scsi_Host *shost)
1596 {
1597         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1598
1599         spin_lock_irq(shost->host_lock);
1600         lpfc_get_hba_sym_node_name(phba, fc_host_symbolic_name(shost));
1601         spin_unlock_irq(shost->host_lock);
1602 }
1603
1604 static struct fc_host_statistics *
1605 lpfc_get_stats(struct Scsi_Host *shost)
1606 {
1607         struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata;
1608         struct lpfc_sli *psli = &phba->sli;
1609         struct fc_host_statistics *hs = &phba->link_stats;
1610         struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
1611         LPFC_MBOXQ_t *pmboxq;
1612         MAILBOX_t *pmb;
1613         unsigned long seconds;
1614         int rc = 0;
1615
1616         if (phba->fc_flag & FC_BLOCK_MGMT_IO)
1617                 return NULL;
1618
1619         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1620         if (!pmboxq)
1621                 return NULL;
1622         memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1623
1624         pmb = &pmboxq->mb;
1625         pmb->mbxCommand = MBX_READ_STATUS;
1626         pmb->mbxOwner = OWN_HOST;
1627         pmboxq->context1 = NULL;
1628
1629         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1630                 (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1631                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1632         else
1633                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1634
1635         if (rc != MBX_SUCCESS) {
1636                 if (rc == MBX_TIMEOUT)
1637                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1638                 else
1639                         mempool_free(pmboxq, phba->mbox_mem_pool);
1640                 return NULL;
1641         }
1642
1643         memset(hs, 0, sizeof (struct fc_host_statistics));
1644
1645         hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
1646         hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256);
1647         hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
1648         hs->rx_words = (pmb->un.varRdStatus.rcvByteCnt * 256);
1649
1650         memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1651         pmb->mbxCommand = MBX_READ_LNK_STAT;
1652         pmb->mbxOwner = OWN_HOST;
1653         pmboxq->context1 = NULL;
1654
1655         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1656             (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1657                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1658         else
1659                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1660
1661         if (rc != MBX_SUCCESS) {
1662                 if (rc == MBX_TIMEOUT)
1663                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1664                 else
1665                         mempool_free( pmboxq, phba->mbox_mem_pool);
1666                 return NULL;
1667         }
1668
1669         hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
1670         hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
1671         hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
1672         hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
1673         hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
1674         hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
1675         hs->error_frames = pmb->un.varRdLnk.crcCnt;
1676
1677         hs->link_failure_count -= lso->link_failure_count;
1678         hs->loss_of_sync_count -= lso->loss_of_sync_count;
1679         hs->loss_of_signal_count -= lso->loss_of_signal_count;
1680         hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
1681         hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
1682         hs->invalid_crc_count -= lso->invalid_crc_count;
1683         hs->error_frames -= lso->error_frames;
1684
1685         if (phba->fc_topology == TOPOLOGY_LOOP) {
1686                 hs->lip_count = (phba->fc_eventTag >> 1);
1687                 hs->lip_count -= lso->link_events;
1688                 hs->nos_count = -1;
1689         } else {
1690                 hs->lip_count = -1;
1691                 hs->nos_count = (phba->fc_eventTag >> 1);
1692                 hs->nos_count -= lso->link_events;
1693         }
1694
1695         hs->dumped_frames = -1;
1696
1697         seconds = get_seconds();
1698         if (seconds < psli->stats_start)
1699                 hs->seconds_since_last_reset = seconds +
1700                                 ((unsigned long)-1 - psli->stats_start);
1701         else
1702                 hs->seconds_since_last_reset = seconds - psli->stats_start;
1703
1704         mempool_free(pmboxq, phba->mbox_mem_pool);
1705
1706         return hs;
1707 }
1708
1709 static void
1710 lpfc_reset_stats(struct Scsi_Host *shost)
1711 {
1712         struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata;
1713         struct lpfc_sli *psli = &phba->sli;
1714         struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
1715         LPFC_MBOXQ_t *pmboxq;
1716         MAILBOX_t *pmb;
1717         int rc = 0;
1718
1719         if (phba->fc_flag & FC_BLOCK_MGMT_IO)
1720                 return;
1721
1722         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1723         if (!pmboxq)
1724                 return;
1725         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1726
1727         pmb = &pmboxq->mb;
1728         pmb->mbxCommand = MBX_READ_STATUS;
1729         pmb->mbxOwner = OWN_HOST;
1730         pmb->un.varWords[0] = 0x1; /* reset request */
1731         pmboxq->context1 = NULL;
1732
1733         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1734                 (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1735                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1736         else
1737                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1738
1739         if (rc != MBX_SUCCESS) {
1740                 if (rc == MBX_TIMEOUT)
1741                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1742                 else
1743                         mempool_free(pmboxq, phba->mbox_mem_pool);
1744                 return;
1745         }
1746
1747         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1748         pmb->mbxCommand = MBX_READ_LNK_STAT;
1749         pmb->mbxOwner = OWN_HOST;
1750         pmboxq->context1 = NULL;
1751
1752         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1753             (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1754                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1755         else
1756                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1757
1758         if (rc != MBX_SUCCESS) {
1759                 if (rc == MBX_TIMEOUT)
1760                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1761                 else
1762                         mempool_free( pmboxq, phba->mbox_mem_pool);
1763                 return;
1764         }
1765
1766         lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
1767         lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
1768         lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
1769         lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
1770         lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
1771         lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
1772         lso->error_frames = pmb->un.varRdLnk.crcCnt;
1773         lso->link_events = (phba->fc_eventTag >> 1);
1774
1775         psli->stats_start = get_seconds();
1776
1777         mempool_free(pmboxq, phba->mbox_mem_pool);
1778
1779         return;
1780 }
1781
1782 /*
1783  * The LPFC driver treats linkdown handling as target loss events so there
1784  * are no sysfs handlers for link_down_tmo.
1785  */
1786
1787 static struct lpfc_nodelist *
1788 lpfc_get_node_by_target(struct scsi_target *starget)
1789 {
1790         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1791         struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata;
1792         struct lpfc_nodelist *ndlp;
1793
1794         spin_lock_irq(shost->host_lock);
1795         /* Search for this, mapped, target ID */
1796         list_for_each_entry(ndlp, &phba->fc_nodes, nlp_listp) {
1797                 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
1798                     starget->id == ndlp->nlp_sid) {
1799                         spin_unlock_irq(shost->host_lock);
1800                         return ndlp;
1801                 }
1802         }
1803         spin_unlock_irq(shost->host_lock);
1804         return NULL;
1805 }
1806
1807 static void
1808 lpfc_get_starget_port_id(struct scsi_target *starget)
1809 {
1810         struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
1811
1812         fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1;
1813 }
1814
1815 static void
1816 lpfc_get_starget_node_name(struct scsi_target *starget)
1817 {
1818         struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
1819
1820         fc_starget_node_name(starget) =
1821                 ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
1822 }
1823
1824 static void
1825 lpfc_get_starget_port_name(struct scsi_target *starget)
1826 {
1827         struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
1828
1829         fc_starget_port_name(starget) =
1830                 ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
1831 }
1832
1833 static void
1834 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
1835 {
1836         if (timeout)
1837                 rport->dev_loss_tmo = timeout;
1838         else
1839                 rport->dev_loss_tmo = 1;
1840 }
1841
1842
1843 #define lpfc_rport_show_function(field, format_string, sz, cast)        \
1844 static ssize_t                                                          \
1845 lpfc_show_rport_##field (struct class_device *cdev, char *buf)          \
1846 {                                                                       \
1847         struct fc_rport *rport = transport_class_to_rport(cdev);        \
1848         struct lpfc_rport_data *rdata = rport->hostdata;                \
1849         return snprintf(buf, sz, format_string,                         \
1850                 (rdata->target) ? cast rdata->target->field : 0);       \
1851 }
1852
1853 #define lpfc_rport_rd_attr(field, format_string, sz)                    \
1854         lpfc_rport_show_function(field, format_string, sz, )            \
1855 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)
1856
1857
1858 struct fc_function_template lpfc_transport_functions = {
1859         /* fixed attributes the driver supports */
1860         .show_host_node_name = 1,
1861         .show_host_port_name = 1,
1862         .show_host_supported_classes = 1,
1863         .show_host_supported_fc4s = 1,
1864         .show_host_supported_speeds = 1,
1865         .show_host_maxframe_size = 1,
1866
1867         /* dynamic attributes the driver supports */
1868         .get_host_port_id = lpfc_get_host_port_id,
1869         .show_host_port_id = 1,
1870
1871         .get_host_port_type = lpfc_get_host_port_type,
1872         .show_host_port_type = 1,
1873
1874         .get_host_port_state = lpfc_get_host_port_state,
1875         .show_host_port_state = 1,
1876
1877         /* active_fc4s is shown but doesn't change (thus no get function) */
1878         .show_host_active_fc4s = 1,
1879
1880         .get_host_speed = lpfc_get_host_speed,
1881         .show_host_speed = 1,
1882
1883         .get_host_fabric_name = lpfc_get_host_fabric_name,
1884         .show_host_fabric_name = 1,
1885
1886         .get_host_symbolic_name = lpfc_get_host_symbolic_name,
1887         .show_host_symbolic_name = 1,
1888
1889         /*
1890          * The LPFC driver treats linkdown handling as target loss events
1891          * so there are no sysfs handlers for link_down_tmo.
1892          */
1893
1894         .get_fc_host_stats = lpfc_get_stats,
1895         .reset_fc_host_stats = lpfc_reset_stats,
1896
1897         .dd_fcrport_size = sizeof(struct lpfc_rport_data),
1898         .show_rport_maxframe_size = 1,
1899         .show_rport_supported_classes = 1,
1900
1901         .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
1902         .show_rport_dev_loss_tmo = 1,
1903
1904         .get_starget_port_id  = lpfc_get_starget_port_id,
1905         .show_starget_port_id = 1,
1906
1907         .get_starget_node_name = lpfc_get_starget_node_name,
1908         .show_starget_node_name = 1,
1909
1910         .get_starget_port_name = lpfc_get_starget_port_name,
1911         .show_starget_port_name = 1,
1912
1913         .issue_fc_host_lip = lpfc_issue_lip,
1914         .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
1915         .terminate_rport_io = lpfc_terminate_rport_io,
1916 };
1917
1918 void
1919 lpfc_get_cfgparam(struct lpfc_hba *phba)
1920 {
1921         lpfc_log_verbose_init(phba, lpfc_log_verbose);
1922         lpfc_cr_delay_init(phba, lpfc_cr_delay);
1923         lpfc_cr_count_init(phba, lpfc_cr_count);
1924         lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
1925         lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
1926         lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
1927         lpfc_lun_queue_depth_init(phba, lpfc_lun_queue_depth);
1928         lpfc_fcp_class_init(phba, lpfc_fcp_class);
1929         lpfc_use_adisc_init(phba, lpfc_use_adisc);
1930         lpfc_ack0_init(phba, lpfc_ack0);
1931         lpfc_topology_init(phba, lpfc_topology);
1932         lpfc_scan_down_init(phba, lpfc_scan_down);
1933         lpfc_link_speed_init(phba, lpfc_link_speed);
1934         lpfc_fdmi_on_init(phba, lpfc_fdmi_on);
1935         lpfc_discovery_threads_init(phba, lpfc_discovery_threads);
1936         lpfc_max_luns_init(phba, lpfc_max_luns);
1937         lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
1938         lpfc_use_msi_init(phba, lpfc_use_msi);
1939         lpfc_devloss_tmo_init(phba, lpfc_devloss_tmo);
1940         lpfc_nodev_tmo_init(phba, lpfc_nodev_tmo);
1941         phba->cfg_poll = lpfc_poll;
1942         phba->cfg_soft_wwnn = 0L;
1943         phba->cfg_soft_wwpn = 0L;
1944
1945         /*
1946          * The total number of segments is the configuration value plus 2
1947          * since the IOCB need a command and response bde.
1948          */
1949         phba->cfg_sg_seg_cnt = LPFC_SG_SEG_CNT + 2;
1950
1951         /*
1952          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
1953          * used to create the sg_dma_buf_pool must be dynamically calculated
1954          */
1955         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
1956                         sizeof(struct fcp_rsp) +
1957                         (phba->cfg_sg_seg_cnt * sizeof(struct ulp_bde64));
1958
1959
1960         lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
1961
1962         return;
1963 }