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   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2006 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/pci.h>
  24 #include <linux/interrupt.h>
  25
  26 #include <scsi/scsi.h>
  27 #include <scsi/scsi_device.h>
  28 #include <scsi/scsi_host.h>
  29 #include <scsi/scsi_tcq.h>
  30 #include <scsi/scsi_transport_fc.h>
  31
  32 #include "lpfc_hw.h"
  33 #include "lpfc_sli.h"
  34 #include "lpfc_disc.h"
  35 #include "lpfc_scsi.h"
  36 #include "lpfc.h"
  37 #include "lpfc_logmsg.h"
  38 #include "lpfc_version.h"
  39 #include "lpfc_compat.h"
  40 #include "lpfc_crtn.h"
  41
  42 #define LPFC_DEF_DEVLOSS_TMO 30
  43 #define LPFC_MIN_DEVLOSS_TMO 1
  44 #define LPFC_MAX_DEVLOSS_TMO 255
  45
  46 static void
  47 lpfc_jedec_to_ascii(int incr, char hdw[])
  48 {
  49         int i, j;
  50         for (i = 0; i < 8; i++) {
  51                 j = (incr & 0xf);
  52                 if (j <= 9)
  53                         hdw[7 - i] = 0x30 +  j;
  54                  else
  55                         hdw[7 - i] = 0x61 + j - 10;
  56                 incr = (incr >> 4);
  57         }
  58         hdw[8] = 0;
  59         return;
  60 }
  61
  62 static ssize_t
  63 lpfc_drvr_version_show(struct class_device *cdev, char *buf)
  64 {
  65         return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
  66 }
  67
  68 static ssize_t
  69 management_version_show(struct class_device *cdev, char *buf)
  70 {
  71         return snprintf(buf, PAGE_SIZE, DFC_API_VERSION "\n");
  72 }
  73
  74 static ssize_t
  75 lpfc_info_show(struct class_device *cdev, char *buf)
  76 {
  77         struct Scsi_Host *host = class_to_shost(cdev);
  78         return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
  79 }
  80
  81 static ssize_t
  82 lpfc_serialnum_show(struct class_device *cdev, char *buf)
  83 {
  84         struct Scsi_Host *host = class_to_shost(cdev);
  85         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
  86         return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
  87 }
  88
  89 static ssize_t
  90 lpfc_modeldesc_show(struct class_device *cdev, char *buf)
  91 {
  92         struct Scsi_Host *host = class_to_shost(cdev);
  93         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
  94         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
  95 }
  96
  97 static ssize_t
  98 lpfc_modelname_show(struct class_device *cdev, char *buf)
  99 {
 100         struct Scsi_Host *host = class_to_shost(cdev);
 101         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 102         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
 103 }
 104
 105 static ssize_t
 106 lpfc_programtype_show(struct class_device *cdev, char *buf)
 107 {
 108         struct Scsi_Host *host = class_to_shost(cdev);
 109         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 110         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
 111 }
 112
 113 static ssize_t
 114 lpfc_portnum_show(struct class_device *cdev, char *buf)
 115 {
 116         struct Scsi_Host *host = class_to_shost(cdev);
 117         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 118         return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
 119 }
 120
 121 static ssize_t
 122 lpfc_fwrev_show(struct class_device *cdev, char *buf)
 123 {
 124         struct Scsi_Host *host = class_to_shost(cdev);
 125         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 126         char fwrev[32];
 127         lpfc_decode_firmware_rev(phba, fwrev, 1);
 128         return snprintf(buf, PAGE_SIZE, "%s\n",fwrev);
 129 }
 130
 131 static ssize_t
 132 lpfc_hdw_show(struct class_device *cdev, char *buf)
 133 {
 134         char hdw[9];
 135         struct Scsi_Host *host = class_to_shost(cdev);
 136         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 137         lpfc_vpd_t *vp = &phba->vpd;
 138         lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
 139         return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
 140 }
 141 static ssize_t
 142 lpfc_option_rom_version_show(struct class_device *cdev, char *buf)
 143 {
 144         struct Scsi_Host *host = class_to_shost(cdev);
 145         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 146         return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
 147 }
 148 static ssize_t
 149 lpfc_state_show(struct class_device *cdev, char *buf)
 150 {
 151         struct Scsi_Host *host = class_to_shost(cdev);
 152         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 153         int len = 0;
 154         switch (phba->hba_state) {
 155         case LPFC_STATE_UNKNOWN:
 156         case LPFC_WARM_START:
 157         case LPFC_INIT_START:
 158         case LPFC_INIT_MBX_CMDS:
 159         case LPFC_LINK_DOWN:
 160                 len += snprintf(buf + len, PAGE_SIZE-len, "Link Down\n");
 161                 break;
 162         case LPFC_LINK_UP:
 163         case LPFC_LOCAL_CFG_LINK:
 164                 len += snprintf(buf + len, PAGE_SIZE-len, "Link Up\n");
 165                 break;
 166         case LPFC_FLOGI:
 167         case LPFC_FABRIC_CFG_LINK:
 168         case LPFC_NS_REG:
 169         case LPFC_NS_QRY:
 170         case LPFC_BUILD_DISC_LIST:
 171         case LPFC_DISC_AUTH:
 172         case LPFC_CLEAR_LA:
 173                 len += snprintf(buf + len, PAGE_SIZE-len,
 174                                 "Link Up - Discovery\n");
 175                 break;
 176         case LPFC_HBA_READY:
 177                 len += snprintf(buf + len, PAGE_SIZE-len,
 178                                 "Link Up - Ready:\n");
 179                 if (phba->fc_topology == TOPOLOGY_LOOP) {
 180                         if (phba->fc_flag & FC_PUBLIC_LOOP)
 181                                 len += snprintf(buf + len, PAGE_SIZE-len,
 182                                                 "   Public Loop\n");
 183                         else
 184                                 len += snprintf(buf + len, PAGE_SIZE-len,
 185                                                 "   Private Loop\n");
 186                 } else {
 187                         if (phba->fc_flag & FC_FABRIC)
 188                                 len += snprintf(buf + len, PAGE_SIZE-len,
 189                                                 "   Fabric\n");
 190                         else
 191                                 len += snprintf(buf + len, PAGE_SIZE-len,
 192                                                 "   Point-2-Point\n");
 193                 }
 194         }
 195         return len;
 196 }
 197
 198 static ssize_t
 199 lpfc_num_discovered_ports_show(struct class_device *cdev, char *buf)
 200 {
 201         struct Scsi_Host *host = class_to_shost(cdev);
 202         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 203         return snprintf(buf, PAGE_SIZE, "%d\n", phba->fc_map_cnt +
 204                                                         phba->fc_unmap_cnt);
 205 }
 206
 207
 208 static int
 209 lpfc_issue_lip(struct Scsi_Host *host)
 210 {
 211         struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata;
 212         LPFC_MBOXQ_t *pmboxq;
 213         int mbxstatus = MBXERR_ERROR;
 214
 215         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
 216             (phba->hba_state != LPFC_HBA_READY))
 217                 return -EPERM;
 218
 219         pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
 220
 221         if (!pmboxq)
 222                 return -ENOMEM;
 223
 224         memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 225         pmboxq->mb.mbxCommand = MBX_DOWN_LINK;
 226         pmboxq->mb.mbxOwner = OWN_HOST;
 227
 228         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
 229
 230         if ((mbxstatus == MBX_SUCCESS) && (pmboxq->mb.mbxStatus == 0)) {
 231                 memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 232                 lpfc_init_link(phba, pmboxq, phba->cfg_topology,
 233                                phba->cfg_link_speed);
 234                 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
 235                                                      phba->fc_ratov * 2);
 236         }
 237
 238         if (mbxstatus == MBX_TIMEOUT)
 239                 pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 240         else
 241                 mempool_free(pmboxq, phba->mbox_mem_pool);
 242
 243         if (mbxstatus == MBXERR_ERROR)
 244                 return -EIO;
 245
 246         return 0;
 247 }
 248
 249 static int
 250 lpfc_selective_reset(struct lpfc_hba *phba)
 251 {
 252         struct completion online_compl;
 253         int status = 0;
 254
 255         init_completion(&online_compl);
 256         lpfc_workq_post_event(phba, &status, &online_compl,
 257                               LPFC_EVT_OFFLINE);
 258         wait_for_completion(&online_compl);
 259
 260         if (status != 0)
 261                 return -EIO;
 262
 263         init_completion(&online_compl);
 264         lpfc_workq_post_event(phba, &status, &online_compl,
 265                               LPFC_EVT_ONLINE);
 266         wait_for_completion(&online_compl);
 267
 268         if (status != 0)
 269                 return -EIO;
 270
 271         return 0;
 272 }
 273
 274 static ssize_t
 275 lpfc_issue_reset(struct class_device *cdev, const char *buf, size_t count)
 276 {
 277         struct Scsi_Host *host = class_to_shost(cdev);
 278         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 279         int status = -EINVAL;
 280
 281         if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
 282                 status = lpfc_selective_reset(phba);
 283
 284         if (status == 0)
 285                 return strlen(buf);
 286         else
 287                 return status;
 288 }
 289
 290 static ssize_t
 291 lpfc_nport_evt_cnt_show(struct class_device *cdev, char *buf)
 292 {
 293         struct Scsi_Host *host = class_to_shost(cdev);
 294         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 295         return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
 296 }
 297
 298 static ssize_t
 299 lpfc_board_mode_show(struct class_device *cdev, char *buf)
 300 {
 301         struct Scsi_Host *host = class_to_shost(cdev);
 302         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 303         char  * state;
 304
 305         if (phba->hba_state == LPFC_HBA_ERROR)
 306                 state = "error";
 307         else if (phba->hba_state == LPFC_WARM_START)
 308                 state = "warm start";
 309         else if (phba->hba_state == LPFC_INIT_START)
 310                 state = "offline";
 311         else
 312                 state = "online";
 313
 314         return snprintf(buf, PAGE_SIZE, "%s\n", state);
 315 }
 316
 317 static ssize_t
 318 lpfc_board_mode_store(struct class_device *cdev, const char *buf, size_t count)
 319 {
 320         struct Scsi_Host *host = class_to_shost(cdev);
 321         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 322         struct completion online_compl;
 323         int status=0;
 324
 325         init_completion(&online_compl);
 326
 327         if(strncmp(buf, "online", sizeof("online") - 1) == 0)
 328                 lpfc_workq_post_event(phba, &status, &online_compl,
 329                                       LPFC_EVT_ONLINE);
 330         else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
 331                 lpfc_workq_post_event(phba, &status, &online_compl,
 332                                       LPFC_EVT_OFFLINE);
 333         else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
 334                 lpfc_workq_post_event(phba, &status, &online_compl,
 335                                       LPFC_EVT_WARM_START);
 336         else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
 337                 lpfc_workq_post_event(phba, &status, &online_compl,
 338                                       LPFC_EVT_KILL);
 339         else
 340                 return -EINVAL;
 341
 342         wait_for_completion(&online_compl);
 343
 344         if (!status)
 345                 return strlen(buf);
 346         else
 347                 return -EIO;
 348 }
 349
 350 static ssize_t
 351 lpfc_poll_show(struct class_device *cdev, char *buf)
 352 {
 353         struct Scsi_Host *host = class_to_shost(cdev);
 354         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 355
 356         return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
 357 }
 358
 359 static ssize_t
 360 lpfc_poll_store(struct class_device *cdev, const char *buf,
 361                 size_t count)
 362 {
 363         struct Scsi_Host *host = class_to_shost(cdev);
 364         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 365         uint32_t creg_val;
 366         uint32_t old_val;
 367         int val=0;
 368
 369         if (!isdigit(buf[0]))
 370                 return -EINVAL;
 371
 372         if (sscanf(buf, "%i", &val) != 1)
 373                 return -EINVAL;
 374
 375         if ((val & 0x3) != val)
 376                 return -EINVAL;
 377
 378         spin_lock_irq(phba->host->host_lock);
 379
 380         old_val = phba->cfg_poll;
 381
 382         if (val & ENABLE_FCP_RING_POLLING) {
 383                 if ((val & DISABLE_FCP_RING_INT) &&
 384                     !(old_val & DISABLE_FCP_RING_INT)) {
 385                         creg_val = readl(phba->HCregaddr);
 386                         creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
 387                         writel(creg_val, phba->HCregaddr);
 388                         readl(phba->HCregaddr); /* flush */
 389
 390                         lpfc_poll_start_timer(phba);
 391                 }
 392         } else if (val != 0x0) {
 393                 spin_unlock_irq(phba->host->host_lock);
 394                 return -EINVAL;
 395         }
 396
 397         if (!(val & DISABLE_FCP_RING_INT) &&
 398             (old_val & DISABLE_FCP_RING_INT))
 399         {
 400                 spin_unlock_irq(phba->host->host_lock);
 401                 del_timer(&phba->fcp_poll_timer);
 402                 spin_lock_irq(phba->host->host_lock);
 403                 creg_val = readl(phba->HCregaddr);
 404                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
 405                 writel(creg_val, phba->HCregaddr);
 406                 readl(phba->HCregaddr); /* flush */
 407         }
 408
 409         phba->cfg_poll = val;
 410
 411         spin_unlock_irq(phba->host->host_lock);
 412
 413         return strlen(buf);
 414 }
 415
 416 #define lpfc_param_show(attr)   \
 417 static ssize_t \
 418 lpfc_##attr##_show(struct class_device *cdev, char *buf) \
 419 { \
 420         struct Scsi_Host *host = class_to_shost(cdev);\
 421         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;\
 422         int val = 0;\
 423         val = phba->cfg_##attr;\
 424         return snprintf(buf, PAGE_SIZE, "%d\n",\
 425                         phba->cfg_##attr);\
 426 }
 427
 428 #define lpfc_param_hex_show(attr)       \
 429 static ssize_t \
 430 lpfc_##attr##_show(struct class_device *cdev, char *buf) \
 431 { \
 432         struct Scsi_Host *host = class_to_shost(cdev);\
 433         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;\
 434         int val = 0;\
 435         val = phba->cfg_##attr;\
 436         return snprintf(buf, PAGE_SIZE, "%#x\n",\
 437                         phba->cfg_##attr);\
 438 }
 439
 440 #define lpfc_param_init(attr, default, minval, maxval)  \
 441 static int \
 442 lpfc_##attr##_init(struct lpfc_hba *phba, int val) \
 443 { \
 444         if (val >= minval && val <= maxval) {\
 445                 phba->cfg_##attr = val;\
 446                 return 0;\
 447         }\
 448         lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
 449                         "%d:0449 lpfc_"#attr" attribute cannot be set to %d, "\
 450                         "allowed range is ["#minval", "#maxval"]\n", \
 451                         phba->brd_no, val); \
 452         phba->cfg_##attr = default;\
 453         return -EINVAL;\
 454 }
 455
 456 #define lpfc_param_set(attr, default, minval, maxval)   \
 457 static int \
 458 lpfc_##attr##_set(struct lpfc_hba *phba, int val) \
 459 { \
 460         if (val >= minval && val <= maxval) {\
 461                 phba->cfg_##attr = val;\
 462                 return 0;\
 463         }\
 464         lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
 465                         "%d:0450 lpfc_"#attr" attribute cannot be set to %d, "\
 466                         "allowed range is ["#minval", "#maxval"]\n", \
 467                         phba->brd_no, val); \
 468         return -EINVAL;\
 469 }
 470
 471 #define lpfc_param_store(attr)  \
 472 static ssize_t \
 473 lpfc_##attr##_store(struct class_device *cdev, const char *buf, size_t count) \
 474 { \
 475         struct Scsi_Host *host = class_to_shost(cdev);\
 476         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;\
 477         int val=0;\
 478         if (!isdigit(buf[0]))\
 479                 return -EINVAL;\
 480         if (sscanf(buf, "%i", &val) != 1)\
 481                 return -EINVAL;\
 482         if (lpfc_##attr##_set(phba, val) == 0) \
 483                 return strlen(buf);\
 484         else \
 485                 return -EINVAL;\
 486 }
 487
 488 #define LPFC_ATTR(name, defval, minval, maxval, desc) \
 489 static int lpfc_##name = defval;\
 490 module_param(lpfc_##name, int, 0);\
 491 MODULE_PARM_DESC(lpfc_##name, desc);\
 492 lpfc_param_init(name, defval, minval, maxval)
 493
 494 #define LPFC_ATTR_R(name, defval, minval, maxval, desc) \
 495 static int lpfc_##name = defval;\
 496 module_param(lpfc_##name, int, 0);\
 497 MODULE_PARM_DESC(lpfc_##name, desc);\
 498 lpfc_param_show(name)\
 499 lpfc_param_init(name, defval, minval, maxval)\
 500 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
 501
 502 #define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \
 503 static int lpfc_##name = defval;\
 504 module_param(lpfc_##name, int, 0);\
 505 MODULE_PARM_DESC(lpfc_##name, desc);\
 506 lpfc_param_show(name)\
 507 lpfc_param_init(name, defval, minval, maxval)\
 508 lpfc_param_set(name, defval, minval, maxval)\
 509 lpfc_param_store(name)\
 510 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
 511                          lpfc_##name##_show, lpfc_##name##_store)
 512
 513 #define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \
 514 static int lpfc_##name = defval;\
 515 module_param(lpfc_##name, int, 0);\
 516 MODULE_PARM_DESC(lpfc_##name, desc);\
 517 lpfc_param_hex_show(name)\
 518 lpfc_param_init(name, defval, minval, maxval)\
 519 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
 520
 521 #define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
 522 static int lpfc_##name = defval;\
 523 module_param(lpfc_##name, int, 0);\
 524 MODULE_PARM_DESC(lpfc_##name, desc);\
 525 lpfc_param_hex_show(name)\
 526 lpfc_param_init(name, defval, minval, maxval)\
 527 lpfc_param_set(name, defval, minval, maxval)\
 528 lpfc_param_store(name)\
 529 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
 530                          lpfc_##name##_show, lpfc_##name##_store)
 531
 532 static CLASS_DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
 533 static CLASS_DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
 534 static CLASS_DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
 535 static CLASS_DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
 536 static CLASS_DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
 537 static CLASS_DEVICE_ATTR(portnum, S_IRUGO, lpfc_portnum_show, NULL);
 538 static CLASS_DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
 539 static CLASS_DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
 540 static CLASS_DEVICE_ATTR(state, S_IRUGO, lpfc_state_show, NULL);
 541 static CLASS_DEVICE_ATTR(option_rom_version, S_IRUGO,
 542                                         lpfc_option_rom_version_show, NULL);
 543 static CLASS_DEVICE_ATTR(num_discovered_ports, S_IRUGO,
 544                                         lpfc_num_discovered_ports_show, NULL);
 545 static CLASS_DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
 546 static CLASS_DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show,
 547                          NULL);
 548 static CLASS_DEVICE_ATTR(management_version, S_IRUGO, management_version_show,
 549                          NULL);
 550 static CLASS_DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
 551                          lpfc_board_mode_show, lpfc_board_mode_store);
 552 static CLASS_DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
 553
 554
 555 static char *lpfc_soft_wwn_key = "C99G71SL8032A";
 556
 557 static ssize_t
 558 lpfc_soft_wwn_enable_store(struct class_device *cdev, const char *buf,
 559                                 size_t count)
 560 {
 561         struct Scsi_Host *host = class_to_shost(cdev);
 562         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 563         unsigned int cnt = count;
 564
 565         /*
 566          * We're doing a simple sanity check for soft_wwpn setting.
 567          * We require that the user write a specific key to enable
 568          * the soft_wwpn attribute to be settable. Once the attribute
 569          * is written, the enable key resets. If further updates are
 570          * desired, the key must be written again to re-enable the
 571          * attribute.
 572          *
 573          * The "key" is not secret - it is a hardcoded string shown
 574          * here. The intent is to protect against the random user or
 575          * application that is just writing attributes.
 576          */
 577
 578         /* count may include a LF at end of string */
 579         if (buf[cnt-1] == '\n')
 580                 cnt--;
 581
 582         if ((cnt != strlen(lpfc_soft_wwn_key)) ||
 583             (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
 584                 return -EINVAL;
 585
 586         phba->soft_wwn_enable = 1;
 587         return count;
 588 }
 589 static CLASS_DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
 590                                 lpfc_soft_wwn_enable_store);
 591
 592 static ssize_t
 593 lpfc_soft_wwpn_show(struct class_device *cdev, char *buf)
 594 {
 595         struct Scsi_Host *host = class_to_shost(cdev);
 596         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 597         return snprintf(buf, PAGE_SIZE, "0x%llx\n",
 598                         (unsigned long long)phba->cfg_soft_wwpn);
 599 }
 600
 601
 602 static ssize_t
 603 lpfc_soft_wwpn_store(struct class_device *cdev, const char *buf, size_t count)
 604 {
 605         struct Scsi_Host *host = class_to_shost(cdev);
 606         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 607         struct completion online_compl;
 608         int stat1=0, stat2=0;
 609         unsigned int i, j, cnt=count;
 610         u8 wwpn[8];
 611
 612         /* count may include a LF at end of string */
 613         if (buf[cnt-1] == '\n')
 614                 cnt--;
 615
 616         if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) ||
 617             ((cnt == 17) && (*buf++ != 'x')) ||
 618             ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
 619                 return -EINVAL;
 620
 621         phba->soft_wwn_enable = 0;
 622
 623         memset(wwpn, 0, sizeof(wwpn));
 624
 625         /* Validate and store the new name */
 626         for (i=0, j=0; i < 16; i++) {
 627                 if ((*buf >= 'a') && (*buf <= 'f'))
 628                         j = ((j << 4) | ((*buf++ -'a') + 10));
 629                 else if ((*buf >= 'A') && (*buf <= 'F'))
 630                         j = ((j << 4) | ((*buf++ -'A') + 10));
 631                 else if ((*buf >= '0') && (*buf <= '9'))
 632                         j = ((j << 4) | (*buf++ -'0'));
 633                 else
 634                         return -EINVAL;
 635                 if (i % 2) {
 636                         wwpn[i/2] = j & 0xff;
 637                         j = 0;
 638                 }
 639         }
 640         phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
 641         fc_host_port_name(host) = phba->cfg_soft_wwpn;
 642         if (phba->cfg_soft_wwnn)
 643                 fc_host_node_name(host) = phba->cfg_soft_wwnn;
 644
 645         dev_printk(KERN_NOTICE, &phba->pcidev->dev,
 646                    "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
 647
 648         init_completion(&online_compl);
 649         lpfc_workq_post_event(phba, &stat1, &online_compl, LPFC_EVT_OFFLINE);
 650         wait_for_completion(&online_compl);
 651         if (stat1)
 652                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 653                         "%d:0463 lpfc_soft_wwpn attribute set failed to reinit "
 654                         "adapter - %d\n", phba->brd_no, stat1);
 655
 656         init_completion(&online_compl);
 657         lpfc_workq_post_event(phba, &stat2, &online_compl, LPFC_EVT_ONLINE);
 658         wait_for_completion(&online_compl);
 659         if (stat2)
 660                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 661                         "%d:0464 lpfc_soft_wwpn attribute set failed to reinit "
 662                         "adapter - %d\n", phba->brd_no, stat2);
 663
 664         return (stat1 || stat2) ? -EIO : count;
 665 }
 666 static CLASS_DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,\
 667                          lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
 668
 669 static ssize_t
 670 lpfc_soft_wwnn_show(struct class_device *cdev, char *buf)
 671 {
 672         struct Scsi_Host *host = class_to_shost(cdev);
 673         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 674         return snprintf(buf, PAGE_SIZE, "0x%llx\n",
 675                         (unsigned long long)phba->cfg_soft_wwnn);
 676 }
 677
 678
 679 static ssize_t
 680 lpfc_soft_wwnn_store(struct class_device *cdev, const char *buf, size_t count)
 681 {
 682         struct Scsi_Host *host = class_to_shost(cdev);
 683         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 684         unsigned int i, j, cnt=count;
 685         u8 wwnn[8];
 686
 687         /* count may include a LF at end of string */
 688         if (buf[cnt-1] == '\n')
 689                 cnt--;
 690
 691         if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) ||
 692             ((cnt == 17) && (*buf++ != 'x')) ||
 693             ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
 694                 return -EINVAL;
 695
 696         /*
 697          * Allow wwnn to be set many times, as long as the enable is set.
 698          * However, once the wwpn is set, everything locks.
 699          */
 700
 701         memset(wwnn, 0, sizeof(wwnn));
 702
 703         /* Validate and store the new name */
 704         for (i=0, j=0; i < 16; i++) {
 705                 if ((*buf >= 'a') && (*buf <= 'f'))
 706                         j = ((j << 4) | ((*buf++ -'a') + 10));
 707                 else if ((*buf >= 'A') && (*buf <= 'F'))
 708                         j = ((j << 4) | ((*buf++ -'A') + 10));
 709                 else if ((*buf >= '0') && (*buf <= '9'))
 710                         j = ((j << 4) | (*buf++ -'0'));
 711                 else
 712                         return -EINVAL;
 713                 if (i % 2) {
 714                         wwnn[i/2] = j & 0xff;
 715                         j = 0;
 716                 }
 717         }
 718         phba->cfg_soft_wwnn = wwn_to_u64(wwnn);
 719
 720         dev_printk(KERN_NOTICE, &phba->pcidev->dev,
 721                    "lpfc%d: soft_wwnn set. Value will take effect upon "
 722                    "setting of the soft_wwpn\n", phba->brd_no);
 723
 724         return count;
 725 }
 726 static CLASS_DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,\
 727                          lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
 728
 729
 730 static int lpfc_poll = 0;
 731 module_param(lpfc_poll, int, 0);
 732 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
 733                  " 0 - none,"
 734                  " 1 - poll with interrupts enabled"
 735                  " 3 - poll and disable FCP ring interrupts");
 736
 737 static CLASS_DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
 738                          lpfc_poll_show, lpfc_poll_store);
 739
 740 /*
 741 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
 742 # until the timer expires. Value range is [0,255]. Default value is 30.
 743 */
 744 static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
 745 static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO;
 746 module_param(lpfc_nodev_tmo, int, 0);
 747 MODULE_PARM_DESC(lpfc_nodev_tmo,
 748                  "Seconds driver will hold I/O waiting "
 749                  "for a device to come back");
 750 static ssize_t
 751 lpfc_nodev_tmo_show(struct class_device *cdev, char *buf)
 752 {
 753         struct Scsi_Host *host = class_to_shost(cdev);
 754         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 755         int val = 0;
 756         val = phba->cfg_devloss_tmo;
 757         return snprintf(buf, PAGE_SIZE, "%d\n",
 758                         phba->cfg_devloss_tmo);
 759 }
 760
 761 static int
 762 lpfc_nodev_tmo_init(struct lpfc_hba *phba, int val)
 763 {
 764         static int warned;
 765         if (phba->cfg_devloss_tmo !=  LPFC_DEF_DEVLOSS_TMO) {
 766                 phba->cfg_nodev_tmo = phba->cfg_devloss_tmo;
 767                 if (!warned && val != LPFC_DEF_DEVLOSS_TMO) {
 768                         warned = 1;
 769                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 770                                         "%d:0402 Ignoring nodev_tmo module "
 771                                         "parameter because devloss_tmo is"
 772                                         " set.\n",
 773                                         phba->brd_no);
 774                 }
 775                 return 0;
 776         }
 777
 778         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 779                 phba->cfg_nodev_tmo = val;
 780                 phba->cfg_devloss_tmo = val;
 781                 return 0;
 782         }
 783         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 784                         "%d:0400 lpfc_nodev_tmo attribute cannot be set to %d, "
 785                         "allowed range is [%d, %d]\n",
 786                         phba->brd_no, val,
 787                         LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
 788         phba->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
 789         return -EINVAL;
 790 }
 791
 792 static int
 793 lpfc_nodev_tmo_set(struct lpfc_hba *phba, int val)
 794 {
 795         if (phba->dev_loss_tmo_changed ||
 796                 (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
 797                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 798                                 "%d:0401 Ignoring change to nodev_tmo "
 799                                 "because devloss_tmo is set.\n",
 800                                 phba->brd_no);
 801                 return 0;
 802         }
 803
 804         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 805                 phba->cfg_nodev_tmo = val;
 806                 phba->cfg_devloss_tmo = val;
 807                 return 0;
 808         }
 809
 810         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 811                         "%d:0403 lpfc_nodev_tmo attribute cannot be set to %d, "
 812                         "allowed range is [%d, %d]\n",
 813                         phba->brd_no, val, LPFC_MIN_DEVLOSS_TMO,
 814                         LPFC_MAX_DEVLOSS_TMO);
 815         return -EINVAL;
 816 }
 817
 818 lpfc_param_store(nodev_tmo)
 819
 820 static CLASS_DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
 821                          lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
 822
 823 /*
 824 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
 825 # disappear until the timer expires. Value range is [0,255]. Default
 826 # value is 30.
 827 */
 828 module_param(lpfc_devloss_tmo, int, 0);
 829 MODULE_PARM_DESC(lpfc_devloss_tmo,
 830                  "Seconds driver will hold I/O waiting "
 831                  "for a device to come back");
 832 lpfc_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
 833                 LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
 834 lpfc_param_show(devloss_tmo)
 835 static int
 836 lpfc_devloss_tmo_set(struct lpfc_hba *phba, int val)
 837 {
 838         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 839                 phba->cfg_nodev_tmo = val;
 840                 phba->cfg_devloss_tmo = val;
 841                 phba->dev_loss_tmo_changed = 1;
 842                 return 0;
 843         }
 844
 845         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 846                         "%d:0404 lpfc_devloss_tmo attribute cannot be set to"
 847                         " %d, allowed range is [%d, %d]\n",
 848                         phba->brd_no, val, LPFC_MIN_DEVLOSS_TMO,
 849                         LPFC_MAX_DEVLOSS_TMO);
 850         return -EINVAL;
 851 }
 852
 853 lpfc_param_store(devloss_tmo)
 854 static CLASS_DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
 855         lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
 856
 857 /*
 858 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being
 859 # deluged with LOTS of information.
 860 # You can set a bit mask to record specific types of verbose messages:
 861 #
 862 # LOG_ELS                       0x1        ELS events
 863 # LOG_DISCOVERY                 0x2        Link discovery events
 864 # LOG_MBOX                      0x4        Mailbox events
 865 # LOG_INIT                      0x8        Initialization events
 866 # LOG_LINK_EVENT                0x10       Link events
 867 # LOG_FCP                       0x40       FCP traffic history
 868 # LOG_NODE                      0x80       Node table events
 869 # LOG_MISC                      0x400      Miscellaneous events
 870 # LOG_SLI                       0x800      SLI events
 871 # LOG_FCP_ERROR                 0x1000     Only log FCP errors
 872 # LOG_LIBDFC                    0x2000     LIBDFC events
 873 # LOG_ALL_MSG                   0xffff     LOG all messages
 874 */
 875 LPFC_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffff, "Verbose logging bit-mask");
 876
 877 /*
 878 # lun_queue_depth:  This parameter is used to limit the number of outstanding
 879 # commands per FCP LUN. Value range is [1,128]. Default value is 30.
 880 */
 881 LPFC_ATTR_R(lun_queue_depth, 30, 1, 128,
 882             "Max number of FCP commands we can queue to a specific LUN");
 883
 884 /*
 885 # hba_queue_depth:  This parameter is used to limit the number of outstanding
 886 # commands per lpfc HBA. Value range is [32,8192]. If this parameter
 887 # value is greater than the maximum number of exchanges supported by the HBA,
 888 # then maximum number of exchanges supported by the HBA is used to determine
 889 # the hba_queue_depth.
 890 */
 891 LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192,
 892             "Max number of FCP commands we can queue to a lpfc HBA");
 893
 894 /*
 895 # Some disk devices have a "select ID" or "select Target" capability.
 896 # From a protocol standpoint "select ID" usually means select the
 897 # Fibre channel "ALPA".  In the FC-AL Profile there is an "informative
 898 # annex" which contains a table that maps a "select ID" (a number
 899 # between 0 and 7F) to an ALPA.  By default, for compatibility with
 900 # older drivers, the lpfc driver scans this table from low ALPA to high
 901 # ALPA.
 902 #
 903 # Turning on the scan-down variable (on  = 1, off = 0) will
 904 # cause the lpfc driver to use an inverted table, effectively
 905 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
 906 #
 907 # (Note: This "select ID" functionality is a LOOP ONLY characteristic
 908 # and will not work across a fabric. Also this parameter will take
 909 # effect only in the case when ALPA map is not available.)
 910 */
 911 LPFC_ATTR_R(scan_down, 1, 0, 1,
 912              "Start scanning for devices from highest ALPA to lowest");
 913
 914 /*
 915 # lpfc_topology:  link topology for init link
 916 #            0x0  = attempt loop mode then point-to-point
 917 #            0x01 = internal loopback mode
 918 #            0x02 = attempt point-to-point mode only
 919 #            0x04 = attempt loop mode only
 920 #            0x06 = attempt point-to-point mode then loop
 921 # Set point-to-point mode if you want to run as an N_Port.
 922 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
 923 # Default value is 0.
 924 */
 925 LPFC_ATTR_RW(topology, 0, 0, 6, "Select Fibre Channel topology");
 926
 927 /*
 928 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
 929 # connection.
 930 #       0  = auto select (default)
 931 #       1  = 1 Gigabaud
 932 #       2  = 2 Gigabaud
 933 #       4  = 4 Gigabaud
 934 # Value range is [0,4]. Default value is 0.
 935 */
 936 LPFC_ATTR_R(link_speed, 0, 0, 4, "Select link speed");
 937
 938 /*
 939 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
 940 # Value range is [2,3]. Default value is 3.
 941 */
 942 LPFC_ATTR_R(fcp_class, 3, 2, 3,
 943              "Select Fibre Channel class of service for FCP sequences");
 944
 945 /*
 946 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
 947 # is [0,1]. Default value is 0.
 948 */
 949 LPFC_ATTR_RW(use_adisc, 0, 0, 1,
 950              "Use ADISC on rediscovery to authenticate FCP devices");
 951
 952 /*
 953 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
 954 # range is [0,1]. Default value is 0.
 955 */
 956 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
 957
 958 /*
 959 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
 960 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take
 961 # value [0,63]. cr_count can take value [0,255]. Default value of cr_delay
 962 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if
 963 # cr_delay is set to 0.
 964 */
 965 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
 966                 "interrupt response is generated");
 967
 968 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
 969                 "interrupt response is generated");
 970
 971 /*
 972 # lpfc_multi_ring_support:  Determines how many rings to spread available
 973 # cmd/rsp IOCB entries across.
 974 # Value range is [1,2]. Default value is 1.
 975 */
 976 LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
 977                 "SLI rings to spread IOCB entries across");
 978
 979 /*
 980 # lpfc_multi_ring_rctl:  If lpfc_multi_ring_support is enabled, this
 981 # identifies what rctl value to configure the additional ring for.
 982 # Value range is [1,0xff]. Default value is 4 (Unsolicated Data).
 983 */
 984 LPFC_ATTR_R(multi_ring_rctl, FC_UNSOL_DATA, 1,
 985              255, "Identifies RCTL for additional ring configuration");
 986
 987 /*
 988 # lpfc_multi_ring_type:  If lpfc_multi_ring_support is enabled, this
 989 # identifies what type value to configure the additional ring for.
 990 # Value range is [1,0xff]. Default value is 5 (LLC/SNAP).
 991 */
 992 LPFC_ATTR_R(multi_ring_type, FC_LLC_SNAP, 1,
 993              255, "Identifies TYPE for additional ring configuration");
 994
 995 /*
 996 # lpfc_fdmi_on: controls FDMI support.
 997 #       0 = no FDMI support
 998 #       1 = support FDMI without attribute of hostname
 999 #       2 = support FDMI with attribute of hostname
1000 # Value range [0,2]. Default value is 0.
1001 */
1002 LPFC_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support");
1003
1004 /*
1005 # Specifies the maximum number of ELS cmds we can have outstanding (for
1006 # discovery). Value range is [1,64]. Default value = 32.
1007 */
1008 LPFC_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
1009                  "during discovery");
1010
1011 /*
1012 # lpfc_max_luns: maximum allowed LUN.
1013 # Value range is [0,65535]. Default value is 255.
1014 # NOTE: The SCSI layer might probe all allowed LUN on some old targets.
1015 */
1016 LPFC_ATTR_R(max_luns, 255, 0, 65535,
1017              "Maximum allowed LUN");
1018
1019 /*
1020 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
1021 # Value range is [1,255], default value is 10.
1022 */
1023 LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
1024              "Milliseconds driver will wait between polling FCP ring");
1025
1026 /*
1027 # lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
1028 #               support this feature
1029 #       0  = MSI disabled (default)
1030 #       1  = MSI enabled
1031 # Value range is [0,1]. Default value is 0.
1032 */
1033 LPFC_ATTR_R(use_msi, 0, 0, 1, "Use Message Signaled Interrupts, if possible");
1034
1035
1036 struct class_device_attribute *lpfc_host_attrs[] = {
1037         &class_device_attr_info,
1038         &class_device_attr_serialnum,
1039         &class_device_attr_modeldesc,
1040         &class_device_attr_modelname,
1041         &class_device_attr_programtype,
1042         &class_device_attr_portnum,
1043         &class_device_attr_fwrev,
1044         &class_device_attr_hdw,
1045         &class_device_attr_option_rom_version,
1046         &class_device_attr_state,
1047         &class_device_attr_num_discovered_ports,
1048         &class_device_attr_lpfc_drvr_version,
1049         &class_device_attr_lpfc_log_verbose,
1050         &class_device_attr_lpfc_lun_queue_depth,
1051         &class_device_attr_lpfc_hba_queue_depth,
1052         &class_device_attr_lpfc_nodev_tmo,
1053         &class_device_attr_lpfc_devloss_tmo,
1054         &class_device_attr_lpfc_fcp_class,
1055         &class_device_attr_lpfc_use_adisc,
1056         &class_device_attr_lpfc_ack0,
1057         &class_device_attr_lpfc_topology,
1058         &class_device_attr_lpfc_scan_down,
1059         &class_device_attr_lpfc_link_speed,
1060         &class_device_attr_lpfc_cr_delay,
1061         &class_device_attr_lpfc_cr_count,
1062         &class_device_attr_lpfc_multi_ring_support,
1063         &class_device_attr_lpfc_multi_ring_rctl,
1064         &class_device_attr_lpfc_multi_ring_type,
1065         &class_device_attr_lpfc_fdmi_on,
1066         &class_device_attr_lpfc_max_luns,
1067         &class_device_attr_nport_evt_cnt,
1068         &class_device_attr_management_version,
1069         &class_device_attr_board_mode,
1070         &class_device_attr_issue_reset,
1071         &class_device_attr_lpfc_poll,
1072         &class_device_attr_lpfc_poll_tmo,
1073         &class_device_attr_lpfc_use_msi,
1074         &class_device_attr_lpfc_soft_wwnn,
1075         &class_device_attr_lpfc_soft_wwpn,
1076         &class_device_attr_lpfc_soft_wwn_enable,
1077         NULL,
1078 };
1079
1080 static ssize_t
1081 sysfs_ctlreg_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
1082 {
1083         size_t buf_off;
1084         struct Scsi_Host *host = class_to_shost(container_of(kobj,
1085                                              struct class_device, kobj));
1086         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
1087
1088         if ((off + count) > FF_REG_AREA_SIZE)
1089                 return -ERANGE;
1090
1091         if (count == 0) return 0;
1092
1093         if (off % 4 || count % 4 || (unsigned long)buf % 4)
1094                 return -EINVAL;
1095
1096         spin_lock_irq(phba->host->host_lock);
1097
1098         if (!(phba->fc_flag & FC_OFFLINE_MODE)) {
1099                 spin_unlock_irq(phba->host->host_lock);
1100                 return -EPERM;
1101         }
1102
1103         for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t))
1104                 writel(*((uint32_t *)(buf + buf_off)),
1105                        phba->ctrl_regs_memmap_p + off + buf_off);
1106
1107         spin_unlock_irq(phba->host->host_lock);
1108
1109         return count;
1110 }
1111
1112 static ssize_t
1113 sysfs_ctlreg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
1114 {
1115         size_t buf_off;
1116         uint32_t * tmp_ptr;
1117         struct Scsi_Host *host = class_to_shost(container_of(kobj,
1118                                              struct class_device, kobj));
1119         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
1120
1121         if (off > FF_REG_AREA_SIZE)
1122                 return -ERANGE;
1123
1124         if ((off + count) > FF_REG_AREA_SIZE)
1125                 count = FF_REG_AREA_SIZE - off;
1126
1127         if (count == 0) return 0;
1128
1129         if (off % 4 || count % 4 || (unsigned long)buf % 4)
1130                 return -EINVAL;
1131
1132         spin_lock_irq(phba->host->host_lock);
1133
1134         for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
1135                 tmp_ptr = (uint32_t *)(buf + buf_off);
1136                 *tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
1137         }
1138
1139         spin_unlock_irq(phba->host->host_lock);
1140
1141         return count;
1142 }
1143
1144 static struct bin_attribute sysfs_ctlreg_attr = {
1145         .attr = {
1146                 .name = "ctlreg",
1147                 .mode = S_IRUSR | S_IWUSR,
1148                 .owner = THIS_MODULE,
1149         },
1150         .size = 256,
1151         .read = sysfs_ctlreg_read,
1152         .write = sysfs_ctlreg_write,
1153 };
1154
1155
1156 static void
1157 sysfs_mbox_idle (struct lpfc_hba * phba)
1158 {
1159         phba->sysfs_mbox.state = SMBOX_IDLE;
1160         phba->sysfs_mbox.offset = 0;
1161
1162         if (phba->sysfs_mbox.mbox) {
1163                 mempool_free(phba->sysfs_mbox.mbox,
1164                              phba->mbox_mem_pool);
1165                 phba->sysfs_mbox.mbox = NULL;
1166         }
1167 }
1168
1169 static ssize_t
1170 sysfs_mbox_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
1171 {
1172         struct Scsi_Host * host =
1173                 class_to_shost(container_of(kobj, struct class_device, kobj));
1174         struct lpfc_hba * phba = (struct lpfc_hba*)host->hostdata;
1175         struct lpfcMboxq * mbox = NULL;
1176
1177         if ((count + off) > MAILBOX_CMD_SIZE)
1178                 return -ERANGE;
1179
1180         if (off % 4 ||  count % 4 || (unsigned long)buf % 4)
1181                 return -EINVAL;
1182
1183         if (count == 0)
1184                 return 0;
1185
1186         if (off == 0) {
1187                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1188                 if (!mbox)
1189                         return -ENOMEM;
1190                 memset(mbox, 0, sizeof (LPFC_MBOXQ_t));
1191         }
1192
1193         spin_lock_irq(host->host_lock);
1194
1195         if (off == 0) {
1196                 if (phba->sysfs_mbox.mbox)
1197                         mempool_free(mbox, phba->mbox_mem_pool);
1198                 else
1199                         phba->sysfs_mbox.mbox = mbox;
1200                 phba->sysfs_mbox.state = SMBOX_WRITING;
1201         } else {
1202                 if (phba->sysfs_mbox.state  != SMBOX_WRITING ||
1203                     phba->sysfs_mbox.offset != off           ||
1204                     phba->sysfs_mbox.mbox   == NULL ) {
1205                         sysfs_mbox_idle(phba);
1206                         spin_unlock_irq(host->host_lock);
1207                         return -EAGAIN;
1208                 }
1209         }
1210
1211         memcpy((uint8_t *) & phba->sysfs_mbox.mbox->mb + off,
1212                buf, count);
1213
1214         phba->sysfs_mbox.offset = off + count;
1215
1216         spin_unlock_irq(host->host_lock);
1217
1218         return count;
1219 }
1220
1221 static ssize_t
1222 sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
1223 {
1224         struct Scsi_Host *host =
1225                 class_to_shost(container_of(kobj, struct class_device,
1226                                             kobj));
1227         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
1228         int rc;
1229
1230         if (off > sizeof(MAILBOX_t))
1231                 return -ERANGE;
1232
1233         if ((count + off) > sizeof(MAILBOX_t))
1234                 count = sizeof(MAILBOX_t) - off;
1235
1236         if (off % 4 ||  count % 4 || (unsigned long)buf % 4)
1237                 return -EINVAL;
1238
1239         if (off && count == 0)
1240                 return 0;
1241
1242         spin_lock_irq(phba->host->host_lock);
1243
1244         if (off == 0 &&
1245             phba->sysfs_mbox.state  == SMBOX_WRITING &&
1246             phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {
1247
1248                 switch (phba->sysfs_mbox.mbox->mb.mbxCommand) {
1249                         /* Offline only */
1250                 case MBX_WRITE_NV:
1251                 case MBX_INIT_LINK:
1252                 case MBX_DOWN_LINK:
1253                 case MBX_CONFIG_LINK:
1254                 case MBX_CONFIG_RING:
1255                 case MBX_RESET_RING:
1256                 case MBX_UNREG_LOGIN:
1257                 case MBX_CLEAR_LA:
1258                 case MBX_DUMP_CONTEXT:
1259                 case MBX_RUN_DIAGS:
1260                 case MBX_RESTART:
1261                 case MBX_FLASH_WR_ULA:
1262                 case MBX_SET_MASK:
1263                 case MBX_SET_SLIM:
1264                 case MBX_SET_DEBUG:
1265                         if (!(phba->fc_flag & FC_OFFLINE_MODE)) {
1266                                 printk(KERN_WARNING "mbox_read:Command 0x%x "
1267                                        "is illegal in on-line state\n",
1268                                        phba->sysfs_mbox.mbox->mb.mbxCommand);
1269                                 sysfs_mbox_idle(phba);
1270                                 spin_unlock_irq(phba->host->host_lock);
1271                                 return -EPERM;
1272                         }
1273                 case MBX_LOAD_SM:
1274                 case MBX_READ_NV:
1275                 case MBX_READ_CONFIG:
1276                 case MBX_READ_RCONFIG:
1277                 case MBX_READ_STATUS:
1278                 case MBX_READ_XRI:
1279                 case MBX_READ_REV:
1280                 case MBX_READ_LNK_STAT:
1281                 case MBX_DUMP_MEMORY:
1282                 case MBX_DOWN_LOAD:
1283                 case MBX_UPDATE_CFG:
1284                 case MBX_KILL_BOARD:
1285                 case MBX_LOAD_AREA:
1286                 case MBX_LOAD_EXP_ROM:
1287                 case MBX_BEACON:
1288                 case MBX_DEL_LD_ENTRY:
1289                         break;
1290                 case MBX_READ_SPARM64:
1291                 case MBX_READ_LA:
1292                 case MBX_READ_LA64:
1293                 case MBX_REG_LOGIN:
1294                 case MBX_REG_LOGIN64:
1295                 case MBX_CONFIG_PORT:
1296                 case MBX_RUN_BIU_DIAG:
1297                         printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n",
1298                                phba->sysfs_mbox.mbox->mb.mbxCommand);
1299                         sysfs_mbox_idle(phba);
1300                         spin_unlock_irq(phba->host->host_lock);
1301                         return -EPERM;
1302                 default:
1303                         printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n",
1304                                phba->sysfs_mbox.mbox->mb.mbxCommand);
1305                         sysfs_mbox_idle(phba);
1306                         spin_unlock_irq(phba->host->host_lock);
1307                         return -EPERM;
1308                 }
1309
1310                 if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1311                     (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE))){
1312
1313                         spin_unlock_irq(phba->host->host_lock);
1314                         rc = lpfc_sli_issue_mbox (phba,
1315                                                   phba->sysfs_mbox.mbox,
1316                                                   MBX_POLL);
1317                         spin_lock_irq(phba->host->host_lock);
1318
1319                 } else {
1320                         spin_unlock_irq(phba->host->host_lock);
1321                         rc = lpfc_sli_issue_mbox_wait (phba,
1322                                                        phba->sysfs_mbox.mbox,
1323                                 lpfc_mbox_tmo_val(phba,
1324                                     phba->sysfs_mbox.mbox->mb.mbxCommand) * HZ);
1325                         spin_lock_irq(phba->host->host_lock);
1326                 }
1327
1328                 if (rc != MBX_SUCCESS) {
1329                         sysfs_mbox_idle(phba);
1330                         spin_unlock_irq(host->host_lock);
1331                         return  (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
1332                 }
1333                 phba->sysfs_mbox.state = SMBOX_READING;
1334         }
1335         else if (phba->sysfs_mbox.offset != off ||
1336                  phba->sysfs_mbox.state  != SMBOX_READING) {
1337                 printk(KERN_WARNING  "mbox_read: Bad State\n");
1338                 sysfs_mbox_idle(phba);
1339                 spin_unlock_irq(host->host_lock);
1340                 return -EAGAIN;
1341         }
1342
1343         memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);
1344
1345         phba->sysfs_mbox.offset = off + count;
1346
1347         if (phba->sysfs_mbox.offset == sizeof(MAILBOX_t))
1348                 sysfs_mbox_idle(phba);
1349
1350         spin_unlock_irq(phba->host->host_lock);
1351
1352         return count;
1353 }
1354
1355 static struct bin_attribute sysfs_mbox_attr = {
1356         .attr = {
1357                 .name = "mbox",
1358                 .mode = S_IRUSR | S_IWUSR,
1359                 .owner = THIS_MODULE,
1360         },
1361         .size = sizeof(MAILBOX_t),
1362         .read = sysfs_mbox_read,
1363         .write = sysfs_mbox_write,
1364 };
1365
1366 int
1367 lpfc_alloc_sysfs_attr(struct lpfc_hba *phba)
1368 {
1369         struct Scsi_Host *host = phba->host;
1370         int error;
1371
1372         error = sysfs_create_bin_file(&host->shost_classdev.kobj,
1373                                                         &sysfs_ctlreg_attr);
1374         if (error)
1375                 goto out;
1376
1377         error = sysfs_create_bin_file(&host->shost_classdev.kobj,
1378                                                         &sysfs_mbox_attr);
1379         if (error)
1380                 goto out_remove_ctlreg_attr;
1381
1382         return 0;
1383 out_remove_ctlreg_attr:
1384         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_ctlreg_attr);
1385 out:
1386         return error;
1387 }
1388
1389 void
1390 lpfc_free_sysfs_attr(struct lpfc_hba *phba)
1391 {
1392         struct Scsi_Host *host = phba->host;
1393
1394         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_mbox_attr);
1395         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_ctlreg_attr);
1396 }
1397
1398
1399 /*
1400  * Dynamic FC Host Attributes Support
1401  */
1402
1403 static void
1404 lpfc_get_host_port_id(struct Scsi_Host *shost)
1405 {
1406         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1407         /* note: fc_myDID already in cpu endianness */
1408         fc_host_port_id(shost) = phba->fc_myDID;
1409 }
1410
1411 static void
1412 lpfc_get_host_port_type(struct Scsi_Host *shost)
1413 {
1414         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1415
1416         spin_lock_irq(shost->host_lock);
1417
1418         if (phba->hba_state == LPFC_HBA_READY) {
1419                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1420                         if (phba->fc_flag & FC_PUBLIC_LOOP)
1421                                 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
1422                         else
1423                                 fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
1424                 } else {
1425                         if (phba->fc_flag & FC_FABRIC)
1426                                 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
1427                         else
1428                                 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
1429                 }
1430         } else
1431                 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
1432
1433         spin_unlock_irq(shost->host_lock);
1434 }
1435
1436 static void
1437 lpfc_get_host_port_state(struct Scsi_Host *shost)
1438 {
1439         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1440
1441         spin_lock_irq(shost->host_lock);
1442
1443         if (phba->fc_flag & FC_OFFLINE_MODE)
1444                 fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
1445         else {
1446                 switch (phba->hba_state) {
1447                 case LPFC_STATE_UNKNOWN:
1448                 case LPFC_WARM_START:
1449                 case LPFC_INIT_START:
1450                 case LPFC_INIT_MBX_CMDS:
1451                 case LPFC_LINK_DOWN:
1452                         fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
1453                         break;
1454                 case LPFC_LINK_UP:
1455                 case LPFC_LOCAL_CFG_LINK:
1456                 case LPFC_FLOGI:
1457                 case LPFC_FABRIC_CFG_LINK:
1458                 case LPFC_NS_REG:
1459                 case LPFC_NS_QRY:
1460                 case LPFC_BUILD_DISC_LIST:
1461                 case LPFC_DISC_AUTH:
1462                 case LPFC_CLEAR_LA:
1463                 case LPFC_HBA_READY:
1464                         /* Links up, beyond this port_type reports state */
1465                         fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
1466                         break;
1467                 case LPFC_HBA_ERROR:
1468                         fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
1469                         break;
1470                 default:
1471                         fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
1472                         break;
1473                 }
1474         }
1475
1476         spin_unlock_irq(shost->host_lock);
1477 }
1478
1479 static void
1480 lpfc_get_host_speed(struct Scsi_Host *shost)
1481 {
1482         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1483
1484         spin_lock_irq(shost->host_lock);
1485
1486         if (phba->hba_state == LPFC_HBA_READY) {
1487                 switch(phba->fc_linkspeed) {
1488                         case LA_1GHZ_LINK:
1489                                 fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
1490                         break;
1491                         case LA_2GHZ_LINK:
1492                                 fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
1493                         break;
1494                         case LA_4GHZ_LINK:
1495                                 fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
1496                         break;
1497                         default:
1498                                 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
1499                         break;
1500                 }
1501         }
1502
1503         spin_unlock_irq(shost->host_lock);
1504 }
1505
1506 static void
1507 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
1508 {
1509         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1510         u64 node_name;
1511
1512         spin_lock_irq(shost->host_lock);
1513
1514         if ((phba->fc_flag & FC_FABRIC) ||
1515             ((phba->fc_topology == TOPOLOGY_LOOP) &&
1516              (phba->fc_flag & FC_PUBLIC_LOOP)))
1517                 node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
1518         else
1519                 /* fabric is local port if there is no F/FL_Port */
1520                 node_name = wwn_to_u64(phba->fc_nodename.u.wwn);
1521
1522         spin_unlock_irq(shost->host_lock);
1523
1524         fc_host_fabric_name(shost) = node_name;
1525 }
1526
1527 static void
1528 lpfc_get_host_symbolic_name (struct Scsi_Host *shost)
1529 {
1530         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata;
1531
1532         spin_lock_irq(shost->host_lock);
1533         lpfc_get_hba_sym_node_name(phba, fc_host_symbolic_name(shost));
1534         spin_unlock_irq(shost->host_lock);
1535 }
1536
1537 static struct fc_host_statistics *
1538 lpfc_get_stats(struct Scsi_Host *shost)
1539 {
1540         struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata;
1541         struct lpfc_sli *psli = &phba->sli;
1542         struct fc_host_statistics *hs = &phba->link_stats;
1543         struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
1544         LPFC_MBOXQ_t *pmboxq;
1545         MAILBOX_t *pmb;
1546         unsigned long seconds;
1547         int rc = 0;
1548
1549         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1550         if (!pmboxq)
1551                 return NULL;
1552         memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1553
1554         pmb = &pmboxq->mb;
1555         pmb->mbxCommand = MBX_READ_STATUS;
1556         pmb->mbxOwner = OWN_HOST;
1557         pmboxq->context1 = NULL;
1558
1559         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1560                 (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1561                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1562         else
1563                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1564
1565         if (rc != MBX_SUCCESS) {
1566                 if (rc == MBX_TIMEOUT)
1567                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1568                 else
1569                         mempool_free(pmboxq, phba->mbox_mem_pool);
1570                 return NULL;
1571         }
1572
1573         memset(hs, 0, sizeof (struct fc_host_statistics));
1574
1575         hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
1576         hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256);
1577         hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
1578         hs->rx_words = (pmb->un.varRdStatus.rcvByteCnt * 256);
1579
1580         memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1581         pmb->mbxCommand = MBX_READ_LNK_STAT;
1582         pmb->mbxOwner = OWN_HOST;
1583         pmboxq->context1 = NULL;
1584
1585         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1586             (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1587                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1588         else
1589                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1590
1591         if (rc != MBX_SUCCESS) {
1592                 if (rc == MBX_TIMEOUT)
1593                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1594                 else
1595                         mempool_free( pmboxq, phba->mbox_mem_pool);
1596                 return NULL;
1597         }
1598
1599         hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
1600         hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
1601         hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
1602         hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
1603         hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
1604         hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
1605         hs->error_frames = pmb->un.varRdLnk.crcCnt;
1606
1607         hs->link_failure_count -= lso->link_failure_count;
1608         hs->loss_of_sync_count -= lso->loss_of_sync_count;
1609         hs->loss_of_signal_count -= lso->loss_of_signal_count;
1610         hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
1611         hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
1612         hs->invalid_crc_count -= lso->invalid_crc_count;
1613         hs->error_frames -= lso->error_frames;
1614
1615         if (phba->fc_topology == TOPOLOGY_LOOP) {
1616                 hs->lip_count = (phba->fc_eventTag >> 1);
1617                 hs->lip_count -= lso->link_events;
1618                 hs->nos_count = -1;
1619         } else {
1620                 hs->lip_count = -1;
1621                 hs->nos_count = (phba->fc_eventTag >> 1);
1622                 hs->nos_count -= lso->link_events;
1623         }
1624
1625         hs->dumped_frames = -1;
1626
1627         seconds = get_seconds();
1628         if (seconds < psli->stats_start)
1629                 hs->seconds_since_last_reset = seconds +
1630                                 ((unsigned long)-1 - psli->stats_start);
1631         else
1632                 hs->seconds_since_last_reset = seconds - psli->stats_start;
1633
1634         return hs;
1635 }
1636
1637 static void
1638 lpfc_reset_stats(struct Scsi_Host *shost)
1639 {
1640         struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata;
1641         struct lpfc_sli *psli = &phba->sli;
1642         struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
1643         LPFC_MBOXQ_t *pmboxq;
1644         MAILBOX_t *pmb;
1645         int rc = 0;
1646
1647         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1648         if (!pmboxq)
1649                 return;
1650         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1651
1652         pmb = &pmboxq->mb;
1653         pmb->mbxCommand = MBX_READ_STATUS;
1654         pmb->mbxOwner = OWN_HOST;
1655         pmb->un.varWords[0] = 0x1; /* reset request */
1656         pmboxq->context1 = NULL;
1657
1658         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1659                 (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1660                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1661         else
1662                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1663
1664         if (rc != MBX_SUCCESS) {
1665                 if (rc == MBX_TIMEOUT)
1666                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1667                 else
1668                         mempool_free(pmboxq, phba->mbox_mem_pool);
1669                 return;
1670         }
1671
1672         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1673         pmb->mbxCommand = MBX_READ_LNK_STAT;
1674         pmb->mbxOwner = OWN_HOST;
1675         pmboxq->context1 = NULL;
1676
1677         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1678             (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1679                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1680         else
1681                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1682
1683         if (rc != MBX_SUCCESS) {
1684                 if (rc == MBX_TIMEOUT)
1685                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1686                 else
1687                         mempool_free( pmboxq, phba->mbox_mem_pool);
1688                 return;
1689         }
1690
1691         lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
1692         lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
1693         lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
1694         lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
1695         lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
1696         lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
1697         lso->error_frames = pmb->un.varRdLnk.crcCnt;
1698         lso->link_events = (phba->fc_eventTag >> 1);
1699
1700         psli->stats_start = get_seconds();
1701
1702         return;
1703 }
1704
1705 /*
1706  * The LPFC driver treats linkdown handling as target loss events so there
1707  * are no sysfs handlers for link_down_tmo.
1708  */
1709 static void
1710 lpfc_get_starget_port_id(struct scsi_target *starget)
1711 {
1712         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1713         struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata;
1714         uint32_t did = -1;
1715         struct lpfc_nodelist *ndlp = NULL;
1716
1717         spin_lock_irq(shost->host_lock);
1718         /* Search the mapped list for this target ID */
1719         list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
1720                 if (starget->id == ndlp->nlp_sid) {
1721                         did = ndlp->nlp_DID;
1722                         break;
1723                 }
1724         }
1725         spin_unlock_irq(shost->host_lock);
1726
1727         fc_starget_port_id(starget) = did;
1728 }
1729
1730 static void
1731 lpfc_get_starget_node_name(struct scsi_target *starget)
1732 {
1733         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1734         struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata;
1735         u64 node_name = 0;
1736         struct lpfc_nodelist *ndlp = NULL;
1737
1738         spin_lock_irq(shost->host_lock);
1739         /* Search the mapped list for this target ID */
1740         list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
1741                 if (starget->id == ndlp->nlp_sid) {
1742                         node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1743                         break;
1744                 }
1745         }
1746         spin_unlock_irq(shost->host_lock);
1747
1748         fc_starget_node_name(starget) = node_name;
1749 }
1750
1751 static void
1752 lpfc_get_starget_port_name(struct scsi_target *starget)
1753 {
1754         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1755         struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata;
1756         u64 port_name = 0;
1757         struct lpfc_nodelist *ndlp = NULL;
1758
1759         spin_lock_irq(shost->host_lock);
1760         /* Search the mapped list for this target ID */
1761         list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
1762                 if (starget->id == ndlp->nlp_sid) {
1763                         port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1764                         break;
1765                 }
1766         }
1767         spin_unlock_irq(shost->host_lock);
1768
1769         fc_starget_port_name(starget) = port_name;
1770 }
1771
1772 static void
1773 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
1774 {
1775         if (timeout)
1776                 rport->dev_loss_tmo = timeout;
1777         else
1778                 rport->dev_loss_tmo = 1;
1779 }
1780
1781
1782 #define lpfc_rport_show_function(field, format_string, sz, cast)        \
1783 static ssize_t                                                          \
1784 lpfc_show_rport_##field (struct class_device *cdev, char *buf)          \
1785 {                                                                       \
1786         struct fc_rport *rport = transport_class_to_rport(cdev);        \
1787         struct lpfc_rport_data *rdata = rport->hostdata;                \
1788         return snprintf(buf, sz, format_string,                         \
1789                 (rdata->target) ? cast rdata->target->field : 0);       \
1790 }
1791
1792 #define lpfc_rport_rd_attr(field, format_string, sz)                    \
1793         lpfc_rport_show_function(field, format_string, sz, )            \
1794 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)
1795
1796
1797 struct fc_function_template lpfc_transport_functions = {
1798         /* fixed attributes the driver supports */
1799         .show_host_node_name = 1,
1800         .show_host_port_name = 1,
1801         .show_host_supported_classes = 1,
1802         .show_host_supported_fc4s = 1,
1803         .show_host_supported_speeds = 1,
1804         .show_host_maxframe_size = 1,
1805
1806         /* dynamic attributes the driver supports */
1807         .get_host_port_id = lpfc_get_host_port_id,
1808         .show_host_port_id = 1,
1809
1810         .get_host_port_type = lpfc_get_host_port_type,
1811         .show_host_port_type = 1,
1812
1813         .get_host_port_state = lpfc_get_host_port_state,
1814         .show_host_port_state = 1,
1815
1816         /* active_fc4s is shown but doesn't change (thus no get function) */
1817         .show_host_active_fc4s = 1,
1818
1819         .get_host_speed = lpfc_get_host_speed,
1820         .show_host_speed = 1,
1821
1822         .get_host_fabric_name = lpfc_get_host_fabric_name,
1823         .show_host_fabric_name = 1,
1824
1825         .get_host_symbolic_name = lpfc_get_host_symbolic_name,
1826         .show_host_symbolic_name = 1,
1827
1828         /*
1829          * The LPFC driver treats linkdown handling as target loss events
1830          * so there are no sysfs handlers for link_down_tmo.
1831          */
1832
1833         .get_fc_host_stats = lpfc_get_stats,
1834         .reset_fc_host_stats = lpfc_reset_stats,
1835
1836         .dd_fcrport_size = sizeof(struct lpfc_rport_data),
1837         .show_rport_maxframe_size = 1,
1838         .show_rport_supported_classes = 1,
1839
1840         .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
1841         .show_rport_dev_loss_tmo = 1,
1842
1843         .get_starget_port_id  = lpfc_get_starget_port_id,
1844         .show_starget_port_id = 1,
1845
1846         .get_starget_node_name = lpfc_get_starget_node_name,
1847         .show_starget_node_name = 1,
1848
1849         .get_starget_port_name = lpfc_get_starget_port_name,
1850         .show_starget_port_name = 1,
1851
1852         .issue_fc_host_lip = lpfc_issue_lip,
1853         .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
1854         .terminate_rport_io = lpfc_terminate_rport_io,
1855 };
1856
1857 void
1858 lpfc_get_cfgparam(struct lpfc_hba *phba)
1859 {
1860         lpfc_log_verbose_init(phba, lpfc_log_verbose);
1861         lpfc_cr_delay_init(phba, lpfc_cr_delay);
1862         lpfc_cr_count_init(phba, lpfc_cr_count);
1863         lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
1864         lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
1865         lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
1866         lpfc_lun_queue_depth_init(phba, lpfc_lun_queue_depth);
1867         lpfc_fcp_class_init(phba, lpfc_fcp_class);
1868         lpfc_use_adisc_init(phba, lpfc_use_adisc);
1869         lpfc_ack0_init(phba, lpfc_ack0);
1870         lpfc_topology_init(phba, lpfc_topology);
1871         lpfc_scan_down_init(phba, lpfc_scan_down);
1872         lpfc_link_speed_init(phba, lpfc_link_speed);
1873         lpfc_fdmi_on_init(phba, lpfc_fdmi_on);
1874         lpfc_discovery_threads_init(phba, lpfc_discovery_threads);
1875         lpfc_max_luns_init(phba, lpfc_max_luns);
1876         lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
1877         lpfc_use_msi_init(phba, lpfc_use_msi);
1878         lpfc_devloss_tmo_init(phba, lpfc_devloss_tmo);
1879         lpfc_nodev_tmo_init(phba, lpfc_nodev_tmo);
1880         phba->cfg_poll = lpfc_poll;
1881         phba->cfg_soft_wwnn = 0L;
1882         phba->cfg_soft_wwpn = 0L;
1883
1884         /*
1885          * The total number of segments is the configuration value plus 2
1886          * since the IOCB need a command and response bde.
1887          */
1888         phba->cfg_sg_seg_cnt = LPFC_SG_SEG_CNT + 2;
1889
1890         /*
1891          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
1892          * used to create the sg_dma_buf_pool must be dynamically calculated
1893          */
1894         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
1895                         sizeof(struct fcp_rsp) +
1896                         (phba->cfg_sg_seg_cnt * sizeof(struct ulp_bde64));
1897
1898         switch (phba->pcidev->device) {
1899         case PCI_DEVICE_ID_LP101:
1900         case PCI_DEVICE_ID_BSMB:
1901         case PCI_DEVICE_ID_ZSMB:
1902                 phba->cfg_hba_queue_depth = LPFC_LP101_HBA_Q_DEPTH;
1903                 break;
1904         case PCI_DEVICE_ID_RFLY:
1905         case PCI_DEVICE_ID_PFLY:
1906         case PCI_DEVICE_ID_BMID:
1907         case PCI_DEVICE_ID_ZMID:
1908         case PCI_DEVICE_ID_TFLY:
1909                 phba->cfg_hba_queue_depth = LPFC_LC_HBA_Q_DEPTH;
1910                 break;
1911         default:
1912                 phba->cfg_hba_queue_depth = LPFC_DFT_HBA_Q_DEPTH;
1913         }
1914
1915         if (phba->cfg_hba_queue_depth > lpfc_hba_queue_depth)
1916                 lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
1917
1918         return;
1919 }