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
  80         return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
  81 }
  82
  83 static ssize_t
  84 lpfc_serialnum_show(struct class_device *cdev, char *buf)
  85 {
  86         struct Scsi_Host  *shost = class_to_shost(cdev);
  87         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
  88         struct lpfc_hba   *phba = vport->phba;
  89
  90         return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
  91 }
  92
  93 static ssize_t
  94 lpfc_modeldesc_show(struct class_device *cdev, char *buf)
  95 {
  96         struct Scsi_Host  *shost = class_to_shost(cdev);
  97         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
  98         struct lpfc_hba   *phba = vport->phba;
  99
 100         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
 101 }
 102
 103 static ssize_t
 104 lpfc_modelname_show(struct class_device *cdev, char *buf)
 105 {
 106         struct Scsi_Host  *shost = class_to_shost(cdev);
 107         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 108         struct lpfc_hba   *phba = vport->phba;
 109
 110         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
 111 }
 112
 113 static ssize_t
 114 lpfc_programtype_show(struct class_device *cdev, char *buf)
 115 {
 116         struct Scsi_Host  *shost = class_to_shost(cdev);
 117         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 118         struct lpfc_hba   *phba = vport->phba;
 119
 120         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
 121 }
 122
 123 static ssize_t
 124 lpfc_vportnum_show(struct class_device *cdev, char *buf)
 125 {
 126         struct Scsi_Host  *shost = class_to_shost(cdev);
 127         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 128         struct lpfc_hba   *phba = vport->phba;
 129
 130         return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
 131 }
 132
 133 static ssize_t
 134 lpfc_fwrev_show(struct class_device *cdev, char *buf)
 135 {
 136         struct Scsi_Host  *shost = class_to_shost(cdev);
 137         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 138         struct lpfc_hba   *phba = vport->phba;
 139         char fwrev[32];
 140
 141         lpfc_decode_firmware_rev(phba, fwrev, 1);
 142         return snprintf(buf, PAGE_SIZE, "%s\n",fwrev);
 143 }
 144
 145 static ssize_t
 146 lpfc_hdw_show(struct class_device *cdev, char *buf)
 147 {
 148         char hdw[9];
 149         struct Scsi_Host  *shost = class_to_shost(cdev);
 150         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 151         struct lpfc_hba   *phba = vport->phba;
 152         lpfc_vpd_t *vp = &phba->vpd;
 153
 154         lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
 155         return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
 156 }
 157 static ssize_t
 158 lpfc_option_rom_version_show(struct class_device *cdev, char *buf)
 159 {
 160         struct Scsi_Host  *shost = class_to_shost(cdev);
 161         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 162         struct lpfc_hba   *phba = vport->phba;
 163
 164         return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
 165 }
 166 static ssize_t
 167 lpfc_state_show(struct class_device *cdev, char *buf)
 168 {
 169         struct Scsi_Host  *shost = class_to_shost(cdev);
 170         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 171         struct lpfc_hba   *phba = vport->phba;
 172         int  len = 0;
 173
 174         switch (phba->link_state) {
 175         case LPFC_LINK_UNKNOWN:
 176         case LPFC_WARM_START:
 177         case LPFC_INIT_START:
 178         case LPFC_INIT_MBX_CMDS:
 179         case LPFC_LINK_DOWN:
 180         case LPFC_HBA_ERROR:
 181                 len += snprintf(buf + len, PAGE_SIZE-len, "Link Down");
 182                 break;
 183         case LPFC_LINK_UP:
 184         case LPFC_CLEAR_LA:
 185                 len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - \n");
 186
 187                 switch (vport->port_state) {
 188                         len += snprintf(buf + len, PAGE_SIZE-len,
 189                                         "initializing\n");
 190                         break;
 191                 case LPFC_LOCAL_CFG_LINK:
 192                         len += snprintf(buf + len, PAGE_SIZE-len,
 193                                         "configuring\n");
 194                         break;
 195                 case LPFC_FLOGI:
 196                 case LPFC_FABRIC_CFG_LINK:
 197                 case LPFC_NS_REG:
 198                 case LPFC_NS_QRY:
 199                 case LPFC_BUILD_DISC_LIST:
 200                 case LPFC_DISC_AUTH:
 201                         len += snprintf(buf + len, PAGE_SIZE - len,
 202                                         "Discovery\n");
 203                         break;
 204                 case LPFC_VPORT_READY:
 205                         len += snprintf(buf + len, PAGE_SIZE - len, "Ready\n");
 206                         break;
 207
 208                 case LPFC_STATE_UNKNOWN:
 209                         len += snprintf(buf + len, PAGE_SIZE - len,
 210                                         "Unknown\n");
 211                         break;
 212                 }
 213
 214                 if (phba->fc_topology == TOPOLOGY_LOOP) {
 215                         if (vport->fc_flag & FC_PUBLIC_LOOP)
 216                                 len += snprintf(buf + len, PAGE_SIZE-len,
 217                                                 "   Public Loop\n");
 218                         else
 219                                 len += snprintf(buf + len, PAGE_SIZE-len,
 220                                                 "   Private Loop\n");
 221                 } else {
 222                         if (vport->fc_flag & FC_FABRIC)
 223                                 len += snprintf(buf + len, PAGE_SIZE-len,
 224                                                 "   Fabric\n");
 225                         else
 226                                 len += snprintf(buf + len, PAGE_SIZE-len,
 227                                                 "   Point-2-Point\n");
 228                 }
 229         }
 230
 231         return len;
 232 }
 233
 234 static ssize_t
 235 lpfc_num_discovered_ports_show(struct class_device *cdev, char *buf)
 236 {
 237         struct Scsi_Host  *shost = class_to_shost(cdev);
 238         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 239
 240         return snprintf(buf, PAGE_SIZE, "%d\n",
 241                         vport->fc_map_cnt + vport->fc_unmap_cnt);
 242 }
 243
 244
 245 static int
 246 lpfc_issue_lip(struct Scsi_Host *shost)
 247 {
 248         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 249         struct lpfc_hba   *phba = vport->phba;
 250         LPFC_MBOXQ_t *pmboxq;
 251         int mbxstatus = MBXERR_ERROR;
 252
 253         if ((vport->fc_flag & FC_OFFLINE_MODE) ||
 254             (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) ||
 255             (vport->port_state != LPFC_VPORT_READY))
 256                 return -EPERM;
 257
 258         pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
 259
 260         if (!pmboxq)
 261                 return -ENOMEM;
 262
 263         memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 264         pmboxq->mb.mbxCommand = MBX_DOWN_LINK;
 265         pmboxq->mb.mbxOwner = OWN_HOST;
 266
 267         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2);
 268
 269         if ((mbxstatus == MBX_SUCCESS) && (pmboxq->mb.mbxStatus == 0)) {
 270                 memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 271                 lpfc_init_link(phba, pmboxq, phba->cfg_topology,
 272                                phba->cfg_link_speed);
 273                 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
 274                                                      phba->fc_ratov * 2);
 275         }
 276
 277         lpfc_set_loopback_flag(phba);
 278         if (mbxstatus == MBX_TIMEOUT)
 279                 pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 280         else
 281                 mempool_free(pmboxq, phba->mbox_mem_pool);
 282
 283         if (mbxstatus == MBXERR_ERROR)
 284                 return -EIO;
 285
 286         return 0;
 287 }
 288
 289 static int
 290 lpfc_do_offline(struct lpfc_hba *phba, uint32_t type)
 291 {
 292         struct completion online_compl;
 293         struct lpfc_sli_ring *pring;
 294         struct lpfc_sli *psli;
 295         int status = 0;
 296         int cnt = 0;
 297         int i;
 298
 299         init_completion(&online_compl);
 300         lpfc_workq_post_event(phba, &status, &online_compl,
 301                               LPFC_EVT_OFFLINE_PREP);
 302         wait_for_completion(&online_compl);
 303
 304         if (status != 0)
 305                 return -EIO;
 306
 307         psli = &phba->sli;
 308
 309         for (i = 0; i < psli->num_rings; i++) {
 310                 pring = &psli->ring[i];
 311                 /* The linkdown event takes 30 seconds to timeout. */
 312                 while (pring->txcmplq_cnt) {
 313                         msleep(10);
 314                         if (cnt++ > 3000) {
 315                                 lpfc_printf_log(phba,
 316                                         KERN_WARNING, LOG_INIT,
 317                                         "%d:0466 Outstanding IO when "
 318                                         "bringing Adapter offline\n",
 319                                         phba->brd_no);
 320                                 break;
 321                         }
 322                 }
 323         }
 324
 325         init_completion(&online_compl);
 326         lpfc_workq_post_event(phba, &status, &online_compl, type);
 327         wait_for_completion(&online_compl);
 328
 329         if (status != 0)
 330                 return -EIO;
 331
 332         return 0;
 333 }
 334
 335 static int
 336 lpfc_selective_reset(struct lpfc_hba *phba)
 337 {
 338         struct completion online_compl;
 339         int status = 0;
 340
 341         status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
 342
 343         if (status != 0)
 344                 return status;
 345
 346         init_completion(&online_compl);
 347         lpfc_workq_post_event(phba, &status, &online_compl,
 348                               LPFC_EVT_ONLINE);
 349         wait_for_completion(&online_compl);
 350
 351         if (status != 0)
 352                 return -EIO;
 353
 354         return 0;
 355 }
 356
 357 static ssize_t
 358 lpfc_issue_reset(struct class_device *cdev, const char *buf, size_t count)
 359 {
 360         struct Scsi_Host  *shost = class_to_shost(cdev);
 361         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 362         struct lpfc_hba   *phba = vport->phba;
 363
 364         int status = -EINVAL;
 365
 366         if (strncmp(buf, "selective", sizeof("selective") - 1) == 0)
 367                 status = lpfc_selective_reset(phba);
 368
 369         if (status == 0)
 370                 return strlen(buf);
 371         else
 372                 return status;
 373 }
 374
 375 static ssize_t
 376 lpfc_nport_evt_cnt_show(struct class_device *cdev, char *buf)
 377 {
 378         struct Scsi_Host  *shost = class_to_shost(cdev);
 379         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 380         struct lpfc_hba   *phba = vport->phba;
 381
 382         return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
 383 }
 384
 385 static ssize_t
 386 lpfc_board_mode_show(struct class_device *cdev, char *buf)
 387 {
 388         struct Scsi_Host  *shost = class_to_shost(cdev);
 389         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 390         struct lpfc_hba   *phba = vport->phba;
 391         char  * state;
 392
 393         if (phba->link_state == LPFC_HBA_ERROR)
 394                 state = "error";
 395         else if (phba->link_state == LPFC_WARM_START)
 396                 state = "warm start";
 397         else if (phba->link_state == LPFC_INIT_START)
 398                 state = "offline";
 399         else
 400                 state = "online";
 401
 402         return snprintf(buf, PAGE_SIZE, "%s\n", state);
 403 }
 404
 405 static ssize_t
 406 lpfc_board_mode_store(struct class_device *cdev, const char *buf, size_t count)
 407 {
 408         struct Scsi_Host  *shost = class_to_shost(cdev);
 409         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 410         struct lpfc_hba   *phba = vport->phba;
 411         struct completion online_compl;
 412         int status=0;
 413
 414         init_completion(&online_compl);
 415
 416         if(strncmp(buf, "online", sizeof("online") - 1) == 0) {
 417                 lpfc_workq_post_event(phba, &status, &online_compl,
 418                                       LPFC_EVT_ONLINE);
 419                 wait_for_completion(&online_compl);
 420         } else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0)
 421                 status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
 422         else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0)
 423                 status = lpfc_do_offline(phba, LPFC_EVT_WARM_START);
 424         else if (strncmp(buf, "error", sizeof("error") - 1) == 0)
 425                 status = lpfc_do_offline(phba, LPFC_EVT_KILL);
 426         else
 427                 return -EINVAL;
 428
 429         if (!status)
 430                 return strlen(buf);
 431         else
 432                 return -EIO;
 433 }
 434
 435 static ssize_t
 436 lpfc_poll_show(struct class_device *cdev, char *buf)
 437 {
 438         struct Scsi_Host  *shost = class_to_shost(cdev);
 439         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 440         struct lpfc_hba   *phba = vport->phba;
 441
 442         return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
 443 }
 444
 445 static ssize_t
 446 lpfc_poll_store(struct class_device *cdev, const char *buf,
 447                 size_t count)
 448 {
 449         struct Scsi_Host  *shost = class_to_shost(cdev);
 450         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 451         struct lpfc_hba   *phba = vport->phba;
 452         uint32_t creg_val;
 453         uint32_t old_val;
 454         int val=0;
 455
 456         if (!isdigit(buf[0]))
 457                 return -EINVAL;
 458
 459         if (sscanf(buf, "%i", &val) != 1)
 460                 return -EINVAL;
 461
 462         if ((val & 0x3) != val)
 463                 return -EINVAL;
 464
 465         spin_lock_irq(&phba->hbalock);
 466
 467         old_val = phba->cfg_poll;
 468
 469         if (val & ENABLE_FCP_RING_POLLING) {
 470                 if ((val & DISABLE_FCP_RING_INT) &&
 471                     !(old_val & DISABLE_FCP_RING_INT)) {
 472                         creg_val = readl(phba->HCregaddr);
 473                         creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
 474                         writel(creg_val, phba->HCregaddr);
 475                         readl(phba->HCregaddr); /* flush */
 476
 477                         lpfc_poll_start_timer(phba);
 478                 }
 479         } else if (val != 0x0) {
 480                 spin_unlock_irq(&phba->hbalock);
 481                 return -EINVAL;
 482         }
 483
 484         if (!(val & DISABLE_FCP_RING_INT) &&
 485             (old_val & DISABLE_FCP_RING_INT))
 486         {
 487                 spin_unlock_irq(&phba->hbalock);
 488                 del_timer(&phba->fcp_poll_timer);
 489                 spin_lock_irq(&phba->hbalock);
 490                 creg_val = readl(phba->HCregaddr);
 491                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
 492                 writel(creg_val, phba->HCregaddr);
 493                 readl(phba->HCregaddr); /* flush */
 494         }
 495
 496         phba->cfg_poll = val;
 497
 498         spin_unlock_irq(&phba->hbalock);
 499
 500         return strlen(buf);
 501 }
 502
 503 #define lpfc_param_show(attr)   \
 504 static ssize_t \
 505 lpfc_##attr##_show(struct class_device *cdev, char *buf) \
 506 { \
 507         struct Scsi_Host  *shost = class_to_shost(cdev);\
 508         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
 509         struct lpfc_hba   *phba = vport->phba;\
 510         int val = 0;\
 511         val = phba->cfg_##attr;\
 512         return snprintf(buf, PAGE_SIZE, "%d\n",\
 513                         phba->cfg_##attr);\
 514 }
 515
 516 #define lpfc_param_hex_show(attr)       \
 517 static ssize_t \
 518 lpfc_##attr##_show(struct class_device *cdev, char *buf) \
 519 { \
 520         struct Scsi_Host  *shost = class_to_shost(cdev);\
 521         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
 522         struct lpfc_hba   *phba = vport->phba;\
 523         int val = 0;\
 524         val = phba->cfg_##attr;\
 525         return snprintf(buf, PAGE_SIZE, "%#x\n",\
 526                         phba->cfg_##attr);\
 527 }
 528
 529 #define lpfc_param_init(attr, default, minval, maxval)  \
 530 static int \
 531 lpfc_##attr##_init(struct lpfc_hba *phba, int val) \
 532 { \
 533         if (val >= minval && val <= maxval) {\
 534                 phba->cfg_##attr = val;\
 535                 return 0;\
 536         }\
 537         lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
 538                         "%d:0449 lpfc_"#attr" attribute cannot be set to %d, "\
 539                         "allowed range is ["#minval", "#maxval"]\n", \
 540                         phba->brd_no, val); \
 541         phba->cfg_##attr = default;\
 542         return -EINVAL;\
 543 }
 544
 545 #define lpfc_param_set(attr, default, minval, maxval)   \
 546 static int \
 547 lpfc_##attr##_set(struct lpfc_hba *phba, int val) \
 548 { \
 549         if (val >= minval && val <= maxval) {\
 550                 phba->cfg_##attr = val;\
 551                 return 0;\
 552         }\
 553         lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
 554                         "%d:0450 lpfc_"#attr" attribute cannot be set to %d, "\
 555                         "allowed range is ["#minval", "#maxval"]\n", \
 556                         phba->brd_no, val); \
 557         return -EINVAL;\
 558 }
 559
 560 #define lpfc_param_store(attr)  \
 561 static ssize_t \
 562 lpfc_##attr##_store(struct class_device *cdev, const char *buf, size_t count) \
 563 { \
 564         struct Scsi_Host  *shost = class_to_shost(cdev);\
 565         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\
 566         struct lpfc_hba   *phba = vport->phba;\
 567         int val=0;\
 568         if (!isdigit(buf[0]))\
 569                 return -EINVAL;\
 570         if (sscanf(buf, "%i", &val) != 1)\
 571                 return -EINVAL;\
 572         if (lpfc_##attr##_set(phba, val) == 0) \
 573                 return strlen(buf);\
 574         else \
 575                 return -EINVAL;\
 576 }
 577
 578 #define LPFC_ATTR(name, defval, minval, maxval, desc) \
 579 static int lpfc_##name = defval;\
 580 module_param(lpfc_##name, int, 0);\
 581 MODULE_PARM_DESC(lpfc_##name, desc);\
 582 lpfc_param_init(name, defval, minval, maxval)
 583
 584 #define LPFC_ATTR_R(name, defval, minval, maxval, desc) \
 585 static int lpfc_##name = defval;\
 586 module_param(lpfc_##name, int, 0);\
 587 MODULE_PARM_DESC(lpfc_##name, desc);\
 588 lpfc_param_show(name)\
 589 lpfc_param_init(name, defval, minval, maxval)\
 590 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
 591
 592 #define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \
 593 static int lpfc_##name = defval;\
 594 module_param(lpfc_##name, int, 0);\
 595 MODULE_PARM_DESC(lpfc_##name, desc);\
 596 lpfc_param_show(name)\
 597 lpfc_param_init(name, defval, minval, maxval)\
 598 lpfc_param_set(name, defval, minval, maxval)\
 599 lpfc_param_store(name)\
 600 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
 601                          lpfc_##name##_show, lpfc_##name##_store)
 602
 603 #define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \
 604 static int lpfc_##name = defval;\
 605 module_param(lpfc_##name, int, 0);\
 606 MODULE_PARM_DESC(lpfc_##name, desc);\
 607 lpfc_param_hex_show(name)\
 608 lpfc_param_init(name, defval, minval, maxval)\
 609 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
 610
 611 #define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
 612 static int lpfc_##name = defval;\
 613 module_param(lpfc_##name, int, 0);\
 614 MODULE_PARM_DESC(lpfc_##name, desc);\
 615 lpfc_param_hex_show(name)\
 616 lpfc_param_init(name, defval, minval, maxval)\
 617 lpfc_param_set(name, defval, minval, maxval)\
 618 lpfc_param_store(name)\
 619 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
 620                          lpfc_##name##_show, lpfc_##name##_store)
 621
 622 static CLASS_DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
 623 static CLASS_DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
 624 static CLASS_DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
 625 static CLASS_DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
 626 static CLASS_DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
 627 static CLASS_DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL);
 628 static CLASS_DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
 629 static CLASS_DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
 630 static CLASS_DEVICE_ATTR(state, S_IRUGO, lpfc_state_show, NULL);
 631 static CLASS_DEVICE_ATTR(option_rom_version, S_IRUGO,
 632                                         lpfc_option_rom_version_show, NULL);
 633 static CLASS_DEVICE_ATTR(num_discovered_ports, S_IRUGO,
 634                                         lpfc_num_discovered_ports_show, NULL);
 635 static CLASS_DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
 636 static CLASS_DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show,
 637                          NULL);
 638 static CLASS_DEVICE_ATTR(management_version, S_IRUGO, management_version_show,
 639                          NULL);
 640 static CLASS_DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR,
 641                          lpfc_board_mode_show, lpfc_board_mode_store);
 642 static CLASS_DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset);
 643
 644
 645 static char *lpfc_soft_wwn_key = "C99G71SL8032A";
 646
 647 static ssize_t
 648 lpfc_soft_wwn_enable_store(struct class_device *cdev, const char *buf,
 649                                 size_t count)
 650 {
 651         struct Scsi_Host  *shost = class_to_shost(cdev);
 652         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 653         struct lpfc_hba   *phba = vport->phba;
 654         unsigned int cnt = count;
 655
 656         /*
 657          * We're doing a simple sanity check for soft_wwpn setting.
 658          * We require that the user write a specific key to enable
 659          * the soft_wwpn attribute to be settable. Once the attribute
 660          * is written, the enable key resets. If further updates are
 661          * desired, the key must be written again to re-enable the
 662          * attribute.
 663          *
 664          * The "key" is not secret - it is a hardcoded string shown
 665          * here. The intent is to protect against the random user or
 666          * application that is just writing attributes.
 667          */
 668
 669         /* count may include a LF at end of string */
 670         if (buf[cnt-1] == '\n')
 671                 cnt--;
 672
 673         if ((cnt != strlen(lpfc_soft_wwn_key)) ||
 674             (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0))
 675                 return -EINVAL;
 676
 677         phba->soft_wwn_enable = 1;
 678         return count;
 679 }
 680 static CLASS_DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL,
 681                                 lpfc_soft_wwn_enable_store);
 682
 683 static ssize_t
 684 lpfc_soft_wwpn_show(struct class_device *cdev, char *buf)
 685 {
 686         struct Scsi_Host  *shost = class_to_shost(cdev);
 687         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 688         struct lpfc_hba   *phba = vport->phba;
 689
 690         return snprintf(buf, PAGE_SIZE, "0x%llx\n",
 691                         (unsigned long long)phba->cfg_soft_wwpn);
 692 }
 693
 694
 695 static ssize_t
 696 lpfc_soft_wwpn_store(struct class_device *cdev, const char *buf, size_t count)
 697 {
 698         struct Scsi_Host  *shost = class_to_shost(cdev);
 699         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 700         struct lpfc_hba   *phba = vport->phba;
 701         struct completion online_compl;
 702         int stat1=0, stat2=0;
 703         unsigned int i, j, cnt=count;
 704         u8 wwpn[8];
 705
 706         /* count may include a LF at end of string */
 707         if (buf[cnt-1] == '\n')
 708                 cnt--;
 709
 710         if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) ||
 711             ((cnt == 17) && (*buf++ != 'x')) ||
 712             ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
 713                 return -EINVAL;
 714
 715         phba->soft_wwn_enable = 0;
 716
 717         memset(wwpn, 0, sizeof(wwpn));
 718
 719         /* Validate and store the new name */
 720         for (i=0, j=0; i < 16; i++) {
 721                 if ((*buf >= 'a') && (*buf <= 'f'))
 722                         j = ((j << 4) | ((*buf++ -'a') + 10));
 723                 else if ((*buf >= 'A') && (*buf <= 'F'))
 724                         j = ((j << 4) | ((*buf++ -'A') + 10));
 725                 else if ((*buf >= '0') && (*buf <= '9'))
 726                         j = ((j << 4) | (*buf++ -'0'));
 727                 else
 728                         return -EINVAL;
 729                 if (i % 2) {
 730                         wwpn[i/2] = j & 0xff;
 731                         j = 0;
 732                 }
 733         }
 734         phba->cfg_soft_wwpn = wwn_to_u64(wwpn);
 735         fc_host_port_name(shost) = phba->cfg_soft_wwpn;
 736         if (phba->cfg_soft_wwnn)
 737                 fc_host_node_name(shost) = phba->cfg_soft_wwnn;
 738
 739         dev_printk(KERN_NOTICE, &phba->pcidev->dev,
 740                    "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no);
 741
 742         stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE);
 743         if (stat1)
 744                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 745                         "%d:0463 lpfc_soft_wwpn attribute set failed to reinit "
 746                         "adapter - %d\n", phba->brd_no, stat1);
 747
 748         init_completion(&online_compl);
 749         lpfc_workq_post_event(phba, &stat2, &online_compl, LPFC_EVT_ONLINE);
 750         wait_for_completion(&online_compl);
 751         if (stat2)
 752                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 753                         "%d:0464 lpfc_soft_wwpn attribute set failed to reinit "
 754                         "adapter - %d\n", phba->brd_no, stat2);
 755
 756         return (stat1 || stat2) ? -EIO : count;
 757 }
 758 static CLASS_DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,\
 759                          lpfc_soft_wwpn_show, lpfc_soft_wwpn_store);
 760
 761 static ssize_t
 762 lpfc_soft_wwnn_show(struct class_device *cdev, char *buf)
 763 {
 764         struct Scsi_Host *host = class_to_shost(cdev);
 765         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 766         return snprintf(buf, PAGE_SIZE, "0x%llx\n",
 767                         (unsigned long long)phba->cfg_soft_wwnn);
 768 }
 769
 770
 771 static ssize_t
 772 lpfc_soft_wwnn_store(struct class_device *cdev, const char *buf, size_t count)
 773 {
 774         struct Scsi_Host *host = class_to_shost(cdev);
 775         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata;
 776         unsigned int i, j, cnt=count;
 777         u8 wwnn[8];
 778
 779         /* count may include a LF at end of string */
 780         if (buf[cnt-1] == '\n')
 781                 cnt--;
 782
 783         if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) ||
 784             ((cnt == 17) && (*buf++ != 'x')) ||
 785             ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x'))))
 786                 return -EINVAL;
 787
 788         /*
 789          * Allow wwnn to be set many times, as long as the enable is set.
 790          * However, once the wwpn is set, everything locks.
 791          */
 792
 793         memset(wwnn, 0, sizeof(wwnn));
 794
 795         /* Validate and store the new name */
 796         for (i=0, j=0; i < 16; i++) {
 797                 if ((*buf >= 'a') && (*buf <= 'f'))
 798                         j = ((j << 4) | ((*buf++ -'a') + 10));
 799                 else if ((*buf >= 'A') && (*buf <= 'F'))
 800                         j = ((j << 4) | ((*buf++ -'A') + 10));
 801                 else if ((*buf >= '0') && (*buf <= '9'))
 802                         j = ((j << 4) | (*buf++ -'0'));
 803                 else
 804                         return -EINVAL;
 805                 if (i % 2) {
 806                         wwnn[i/2] = j & 0xff;
 807                         j = 0;
 808                 }
 809         }
 810         phba->cfg_soft_wwnn = wwn_to_u64(wwnn);
 811
 812         dev_printk(KERN_NOTICE, &phba->pcidev->dev,
 813                    "lpfc%d: soft_wwnn set. Value will take effect upon "
 814                    "setting of the soft_wwpn\n", phba->brd_no);
 815
 816         return count;
 817 }
 818 static CLASS_DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,\
 819                          lpfc_soft_wwnn_show, lpfc_soft_wwnn_store);
 820
 821
 822 static int lpfc_poll = 0;
 823 module_param(lpfc_poll, int, 0);
 824 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
 825                  " 0 - none,"
 826                  " 1 - poll with interrupts enabled"
 827                  " 3 - poll and disable FCP ring interrupts");
 828
 829 static CLASS_DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
 830                          lpfc_poll_show, lpfc_poll_store);
 831
 832 /*
 833 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
 834 # until the timer expires. Value range is [0,255]. Default value is 30.
 835 */
 836 static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
 837 static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO;
 838 module_param(lpfc_nodev_tmo, int, 0);
 839 MODULE_PARM_DESC(lpfc_nodev_tmo,
 840                  "Seconds driver will hold I/O waiting "
 841                  "for a device to come back");
 842 static ssize_t
 843 lpfc_nodev_tmo_show(struct class_device *cdev, char *buf)
 844 {
 845         struct Scsi_Host  *shost = class_to_shost(cdev);
 846         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
 847         struct lpfc_hba   *phba = vport->phba;
 848         int val = 0;
 849         val = phba->cfg_devloss_tmo;
 850         return snprintf(buf, PAGE_SIZE, "%d\n",
 851                         phba->cfg_devloss_tmo);
 852 }
 853
 854 static int
 855 lpfc_nodev_tmo_init(struct lpfc_hba *phba, int val)
 856 {
 857         static int warned;
 858         if (phba->cfg_devloss_tmo !=  LPFC_DEF_DEVLOSS_TMO) {
 859                 phba->cfg_nodev_tmo = phba->cfg_devloss_tmo;
 860                 if (!warned && val != LPFC_DEF_DEVLOSS_TMO) {
 861                         warned = 1;
 862                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 863                                         "%d:0402 Ignoring nodev_tmo module "
 864                                         "parameter because devloss_tmo is"
 865                                         " set.\n",
 866                                         phba->brd_no);
 867                 }
 868                 return 0;
 869         }
 870
 871         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 872                 phba->cfg_nodev_tmo = val;
 873                 phba->cfg_devloss_tmo = val;
 874                 return 0;
 875         }
 876         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 877                         "%d:0400 lpfc_nodev_tmo attribute cannot be set to %d, "
 878                         "allowed range is [%d, %d]\n",
 879                         phba->brd_no, val,
 880                         LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO);
 881         phba->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO;
 882         return -EINVAL;
 883 }
 884
 885 static int
 886 lpfc_nodev_tmo_set(struct lpfc_hba *phba, int val)
 887 {
 888         if (phba->dev_loss_tmo_changed ||
 889                 (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) {
 890                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 891                                 "%d:0401 Ignoring change to nodev_tmo "
 892                                 "because devloss_tmo is set.\n",
 893                                 phba->brd_no);
 894                 return 0;
 895         }
 896
 897         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 898                 phba->cfg_nodev_tmo = val;
 899                 phba->cfg_devloss_tmo = val;
 900                 return 0;
 901         }
 902
 903         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 904                         "%d:0403 lpfc_nodev_tmo attribute cannot be set to %d, "
 905                         "allowed range is [%d, %d]\n",
 906                         phba->brd_no, val, LPFC_MIN_DEVLOSS_TMO,
 907                         LPFC_MAX_DEVLOSS_TMO);
 908         return -EINVAL;
 909 }
 910
 911 lpfc_param_store(nodev_tmo)
 912
 913 static CLASS_DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR,
 914                          lpfc_nodev_tmo_show, lpfc_nodev_tmo_store);
 915
 916 /*
 917 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that
 918 # disappear until the timer expires. Value range is [0,255]. Default
 919 # value is 30.
 920 */
 921 module_param(lpfc_devloss_tmo, int, 0);
 922 MODULE_PARM_DESC(lpfc_devloss_tmo,
 923                  "Seconds driver will hold I/O waiting "
 924                  "for a device to come back");
 925 lpfc_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO,
 926                 LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO)
 927 lpfc_param_show(devloss_tmo)
 928 static int
 929 lpfc_devloss_tmo_set(struct lpfc_hba *phba, int val)
 930 {
 931         if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) {
 932                 phba->cfg_nodev_tmo = val;
 933                 phba->cfg_devloss_tmo = val;
 934                 phba->dev_loss_tmo_changed = 1;
 935                 return 0;
 936         }
 937
 938         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 939                         "%d:0404 lpfc_devloss_tmo attribute cannot be set to"
 940                         " %d, allowed range is [%d, %d]\n",
 941                         phba->brd_no, val, LPFC_MIN_DEVLOSS_TMO,
 942                         LPFC_MAX_DEVLOSS_TMO);
 943         return -EINVAL;
 944 }
 945
 946 lpfc_param_store(devloss_tmo)
 947 static CLASS_DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR,
 948         lpfc_devloss_tmo_show, lpfc_devloss_tmo_store);
 949
 950 /*
 951 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being
 952 # deluged with LOTS of information.
 953 # You can set a bit mask to record specific types of verbose messages:
 954 #
 955 # LOG_ELS                       0x1        ELS events
 956 # LOG_DISCOVERY                 0x2        Link discovery events
 957 # LOG_MBOX                      0x4        Mailbox events
 958 # LOG_INIT                      0x8        Initialization events
 959 # LOG_LINK_EVENT                0x10       Link events
 960 # LOG_FCP                       0x40       FCP traffic history
 961 # LOG_NODE                      0x80       Node table events
 962 # LOG_MISC                      0x400      Miscellaneous events
 963 # LOG_SLI                       0x800      SLI events
 964 # LOG_FCP_ERROR                 0x1000     Only log FCP errors
 965 # LOG_LIBDFC                    0x2000     LIBDFC events
 966 # LOG_ALL_MSG                   0xffff     LOG all messages
 967 */
 968 LPFC_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffff, "Verbose logging bit-mask");
 969
 970 /*
 971 # lun_queue_depth:  This parameter is used to limit the number of outstanding
 972 # commands per FCP LUN. Value range is [1,128]. Default value is 30.
 973 */
 974 LPFC_ATTR_R(lun_queue_depth, 30, 1, 128,
 975             "Max number of FCP commands we can queue to a specific LUN");
 976
 977 /*
 978 # hba_queue_depth:  This parameter is used to limit the number of outstanding
 979 # commands per lpfc HBA. Value range is [32,8192]. If this parameter
 980 # value is greater than the maximum number of exchanges supported by the HBA,
 981 # then maximum number of exchanges supported by the HBA is used to determine
 982 # the hba_queue_depth.
 983 */
 984 LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192,
 985             "Max number of FCP commands we can queue to a lpfc HBA");
 986
 987 /*
 988 # Some disk devices have a "select ID" or "select Target" capability.
 989 # From a protocol standpoint "select ID" usually means select the
 990 # Fibre channel "ALPA".  In the FC-AL Profile there is an "informative
 991 # annex" which contains a table that maps a "select ID" (a number
 992 # between 0 and 7F) to an ALPA.  By default, for compatibility with
 993 # older drivers, the lpfc driver scans this table from low ALPA to high
 994 # ALPA.
 995 #
 996 # Turning on the scan-down variable (on  = 1, off = 0) will
 997 # cause the lpfc driver to use an inverted table, effectively
 998 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
 999 #
1000 # (Note: This "select ID" functionality is a LOOP ONLY characteristic
1001 # and will not work across a fabric. Also this parameter will take
1002 # effect only in the case when ALPA map is not available.)
1003 */
1004 LPFC_ATTR_R(scan_down, 1, 0, 1,
1005              "Start scanning for devices from highest ALPA to lowest");
1006
1007 /*
1008 # lpfc_topology:  link topology for init link
1009 #            0x0  = attempt loop mode then point-to-point
1010 #            0x01 = internal loopback mode
1011 #            0x02 = attempt point-to-point mode only
1012 #            0x04 = attempt loop mode only
1013 #            0x06 = attempt point-to-point mode then loop
1014 # Set point-to-point mode if you want to run as an N_Port.
1015 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
1016 # Default value is 0.
1017 */
1018 LPFC_ATTR_RW(topology, 0, 0, 6, "Select Fibre Channel topology");
1019
1020 /*
1021 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
1022 # connection.
1023 #       0  = auto select (default)
1024 #       1  = 1 Gigabaud
1025 #       2  = 2 Gigabaud
1026 #       4  = 4 Gigabaud
1027 #       8  = 8 Gigabaud
1028 # Value range is [0,8]. Default value is 0.
1029 */
1030 LPFC_ATTR_R(link_speed, 0, 0, 8, "Select link speed");
1031
1032 /*
1033 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
1034 # Value range is [2,3]. Default value is 3.
1035 */
1036 LPFC_ATTR_R(fcp_class, 3, 2, 3,
1037              "Select Fibre Channel class of service for FCP sequences");
1038
1039 /*
1040 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
1041 # is [0,1]. Default value is 0.
1042 */
1043 LPFC_ATTR_RW(use_adisc, 0, 0, 1,
1044              "Use ADISC on rediscovery to authenticate FCP devices");
1045
1046 /*
1047 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
1048 # range is [0,1]. Default value is 0.
1049 */
1050 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
1051
1052 /*
1053 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
1054 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take
1055 # value [0,63]. cr_count can take value [1,255]. Default value of cr_delay
1056 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if
1057 # cr_delay is set to 0.
1058 */
1059 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an "
1060                 "interrupt response is generated");
1061
1062 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an "
1063                 "interrupt response is generated");
1064
1065 /*
1066 # lpfc_multi_ring_support:  Determines how many rings to spread available
1067 # cmd/rsp IOCB entries across.
1068 # Value range is [1,2]. Default value is 1.
1069 */
1070 LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary "
1071                 "SLI rings to spread IOCB entries across");
1072
1073 /*
1074 # lpfc_multi_ring_rctl:  If lpfc_multi_ring_support is enabled, this
1075 # identifies what rctl value to configure the additional ring for.
1076 # Value range is [1,0xff]. Default value is 4 (Unsolicated Data).
1077 */
1078 LPFC_ATTR_R(multi_ring_rctl, FC_UNSOL_DATA, 1,
1079              255, "Identifies RCTL for additional ring configuration");
1080
1081 /*
1082 # lpfc_multi_ring_type:  If lpfc_multi_ring_support is enabled, this
1083 # identifies what type value to configure the additional ring for.
1084 # Value range is [1,0xff]. Default value is 5 (LLC/SNAP).
1085 */
1086 LPFC_ATTR_R(multi_ring_type, FC_LLC_SNAP, 1,
1087              255, "Identifies TYPE for additional ring configuration");
1088
1089 /*
1090 # lpfc_fdmi_on: controls FDMI support.
1091 #       0 = no FDMI support
1092 #       1 = support FDMI without attribute of hostname
1093 #       2 = support FDMI with attribute of hostname
1094 # Value range [0,2]. Default value is 0.
1095 */
1096 LPFC_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support");
1097
1098 /*
1099 # Specifies the maximum number of ELS cmds we can have outstanding (for
1100 # discovery). Value range is [1,64]. Default value = 32.
1101 */
1102 LPFC_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands "
1103                  "during discovery");
1104
1105 /*
1106 # lpfc_max_luns: maximum allowed LUN.
1107 # Value range is [0,65535]. Default value is 255.
1108 # NOTE: The SCSI layer might probe all allowed LUN on some old targets.
1109 */
1110 LPFC_ATTR_R(max_luns, 255, 0, 65535,
1111              "Maximum allowed LUN");
1112
1113 /*
1114 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
1115 # Value range is [1,255], default value is 10.
1116 */
1117 LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
1118              "Milliseconds driver will wait between polling FCP ring");
1119
1120 /*
1121 # lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that
1122 #               support this feature
1123 #       0  = MSI disabled (default)
1124 #       1  = MSI enabled
1125 # Value range is [0,1]. Default value is 0.
1126 */
1127 LPFC_ATTR_R(use_msi, 0, 0, 1, "Use Message Signaled Interrupts, if possible");
1128
1129
1130 struct class_device_attribute *lpfc_hba_attrs[] = {
1131         &class_device_attr_info,
1132         &class_device_attr_serialnum,
1133         &class_device_attr_modeldesc,
1134         &class_device_attr_modelname,
1135         &class_device_attr_programtype,
1136         &class_device_attr_portnum,
1137         &class_device_attr_fwrev,
1138         &class_device_attr_hdw,
1139         &class_device_attr_option_rom_version,
1140         &class_device_attr_state,
1141         &class_device_attr_num_discovered_ports,
1142         &class_device_attr_lpfc_drvr_version,
1143         &class_device_attr_lpfc_log_verbose,
1144         &class_device_attr_lpfc_lun_queue_depth,
1145         &class_device_attr_lpfc_hba_queue_depth,
1146         &class_device_attr_lpfc_nodev_tmo,
1147         &class_device_attr_lpfc_devloss_tmo,
1148         &class_device_attr_lpfc_fcp_class,
1149         &class_device_attr_lpfc_use_adisc,
1150         &class_device_attr_lpfc_ack0,
1151         &class_device_attr_lpfc_topology,
1152         &class_device_attr_lpfc_scan_down,
1153         &class_device_attr_lpfc_link_speed,
1154         &class_device_attr_lpfc_cr_delay,
1155         &class_device_attr_lpfc_cr_count,
1156         &class_device_attr_lpfc_multi_ring_support,
1157         &class_device_attr_lpfc_multi_ring_rctl,
1158         &class_device_attr_lpfc_multi_ring_type,
1159         &class_device_attr_lpfc_fdmi_on,
1160         &class_device_attr_lpfc_max_luns,
1161         &class_device_attr_nport_evt_cnt,
1162         &class_device_attr_management_version,
1163         &class_device_attr_board_mode,
1164         &class_device_attr_issue_reset,
1165         &class_device_attr_lpfc_poll,
1166         &class_device_attr_lpfc_poll_tmo,
1167         &class_device_attr_lpfc_use_msi,
1168         &class_device_attr_lpfc_soft_wwnn,
1169         &class_device_attr_lpfc_soft_wwpn,
1170         &class_device_attr_lpfc_soft_wwn_enable,
1171         NULL,
1172 };
1173
1174 static ssize_t
1175 sysfs_ctlreg_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
1176 {
1177         size_t buf_off;
1178         struct class_device *cdev = container_of(kobj, struct class_device,
1179                                                  kobj);
1180         struct Scsi_Host  *shost = class_to_shost(cdev);
1181         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1182         struct lpfc_hba   *phba = vport->phba;
1183
1184         if ((off + count) > FF_REG_AREA_SIZE)
1185                 return -ERANGE;
1186
1187         if (count == 0) return 0;
1188
1189         if (off % 4 || count % 4 || (unsigned long)buf % 4)
1190                 return -EINVAL;
1191
1192         if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
1193                 return -EPERM;
1194         }
1195
1196         spin_lock_irq(&phba->hbalock);
1197         for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t))
1198                 writel(*((uint32_t *)(buf + buf_off)),
1199                        phba->ctrl_regs_memmap_p + off + buf_off);
1200
1201         spin_unlock_irq(&phba->hbalock);
1202
1203         return count;
1204 }
1205
1206 static ssize_t
1207 sysfs_ctlreg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
1208 {
1209         size_t buf_off;
1210         uint32_t * tmp_ptr;
1211         struct class_device *cdev = container_of(kobj, struct class_device,
1212                                                  kobj);
1213         struct Scsi_Host  *shost = class_to_shost(cdev);
1214         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1215         struct lpfc_hba   *phba = vport->phba;
1216
1217         if (off > FF_REG_AREA_SIZE)
1218                 return -ERANGE;
1219
1220         if ((off + count) > FF_REG_AREA_SIZE)
1221                 count = FF_REG_AREA_SIZE - off;
1222
1223         if (count == 0) return 0;
1224
1225         if (off % 4 || count % 4 || (unsigned long)buf % 4)
1226                 return -EINVAL;
1227
1228         spin_lock_irq(&phba->hbalock);
1229
1230         for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
1231                 tmp_ptr = (uint32_t *)(buf + buf_off);
1232                 *tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
1233         }
1234
1235         spin_unlock_irq(&phba->hbalock);
1236
1237         return count;
1238 }
1239
1240 static struct bin_attribute sysfs_ctlreg_attr = {
1241         .attr = {
1242                 .name = "ctlreg",
1243                 .mode = S_IRUSR | S_IWUSR,
1244                 .owner = THIS_MODULE,
1245         },
1246         .size = 256,
1247         .read = sysfs_ctlreg_read,
1248         .write = sysfs_ctlreg_write,
1249 };
1250
1251
1252 static void
1253 sysfs_mbox_idle(struct lpfc_hba *phba)
1254 {
1255         phba->sysfs_mbox.state = SMBOX_IDLE;
1256         phba->sysfs_mbox.offset = 0;
1257
1258         if (phba->sysfs_mbox.mbox) {
1259                 mempool_free(phba->sysfs_mbox.mbox,
1260                              phba->mbox_mem_pool);
1261                 phba->sysfs_mbox.mbox = NULL;
1262         }
1263 }
1264
1265 static ssize_t
1266 sysfs_mbox_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
1267 {
1268         struct class_device *cdev = container_of(kobj, struct class_device,
1269                                                  kobj);
1270         struct Scsi_Host  *shost = class_to_shost(cdev);
1271         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1272         struct lpfc_hba   *phba = vport->phba;
1273         struct lpfcMboxq  *mbox = NULL;
1274
1275         if ((count + off) > MAILBOX_CMD_SIZE)
1276                 return -ERANGE;
1277
1278         if (off % 4 ||  count % 4 || (unsigned long)buf % 4)
1279                 return -EINVAL;
1280
1281         if (count == 0)
1282                 return 0;
1283
1284         if (off == 0) {
1285                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1286                 if (!mbox)
1287                         return -ENOMEM;
1288                 memset(mbox, 0, sizeof (LPFC_MBOXQ_t));
1289         }
1290
1291         spin_lock_irq(&phba->hbalock);
1292
1293         if (off == 0) {
1294                 if (phba->sysfs_mbox.mbox)
1295                         mempool_free(mbox, phba->mbox_mem_pool);
1296                 else
1297                         phba->sysfs_mbox.mbox = mbox;
1298                 phba->sysfs_mbox.state = SMBOX_WRITING;
1299         } else {
1300                 if (phba->sysfs_mbox.state  != SMBOX_WRITING ||
1301                     phba->sysfs_mbox.offset != off           ||
1302                     phba->sysfs_mbox.mbox   == NULL ) {
1303                         sysfs_mbox_idle(phba);
1304                         spin_unlock_irq(&phba->hbalock);
1305                         return -EAGAIN;
1306                 }
1307         }
1308
1309         memcpy((uint8_t *) & phba->sysfs_mbox.mbox->mb + off,
1310                buf, count);
1311
1312         phba->sysfs_mbox.offset = off + count;
1313
1314         spin_unlock_irq(&phba->hbalock);
1315
1316         return count;
1317 }
1318
1319 static ssize_t
1320 sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
1321 {
1322         struct class_device *cdev = container_of(kobj, struct class_device,
1323                                                  kobj);
1324         struct Scsi_Host  *shost = class_to_shost(cdev);
1325         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1326         struct lpfc_hba   *phba = vport->phba;
1327         int rc;
1328
1329         if (off > MAILBOX_CMD_SIZE)
1330                 return -ERANGE;
1331
1332         if ((count + off) > MAILBOX_CMD_SIZE)
1333                 count = MAILBOX_CMD_SIZE - off;
1334
1335         if (off % 4 ||  count % 4 || (unsigned long)buf % 4)
1336                 return -EINVAL;
1337
1338         if (off && count == 0)
1339                 return 0;
1340
1341         spin_lock_irq(&phba->hbalock);
1342
1343         if (off == 0 &&
1344             phba->sysfs_mbox.state  == SMBOX_WRITING &&
1345             phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {
1346
1347                 switch (phba->sysfs_mbox.mbox->mb.mbxCommand) {
1348                         /* Offline only */
1349                 case MBX_WRITE_NV:
1350                 case MBX_INIT_LINK:
1351                 case MBX_DOWN_LINK:
1352                 case MBX_CONFIG_LINK:
1353                 case MBX_CONFIG_RING:
1354                 case MBX_RESET_RING:
1355                 case MBX_UNREG_LOGIN:
1356                 case MBX_CLEAR_LA:
1357                 case MBX_DUMP_CONTEXT:
1358                 case MBX_RUN_DIAGS:
1359                 case MBX_RESTART:
1360                 case MBX_FLASH_WR_ULA:
1361                 case MBX_SET_MASK:
1362                 case MBX_SET_SLIM:
1363                 case MBX_SET_DEBUG:
1364                         if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
1365                                 printk(KERN_WARNING "mbox_read:Command 0x%x "
1366                                        "is illegal in on-line state\n",
1367                                        phba->sysfs_mbox.mbox->mb.mbxCommand);
1368                                 sysfs_mbox_idle(phba);
1369                                 spin_unlock_irq(&phba->hbalock);
1370                                 return -EPERM;
1371                         }
1372                 case MBX_LOAD_SM:
1373                 case MBX_READ_NV:
1374                 case MBX_READ_CONFIG:
1375                 case MBX_READ_RCONFIG:
1376                 case MBX_READ_STATUS:
1377                 case MBX_READ_XRI:
1378                 case MBX_READ_REV:
1379                 case MBX_READ_LNK_STAT:
1380                 case MBX_DUMP_MEMORY:
1381                 case MBX_DOWN_LOAD:
1382                 case MBX_UPDATE_CFG:
1383                 case MBX_KILL_BOARD:
1384                 case MBX_LOAD_AREA:
1385                 case MBX_LOAD_EXP_ROM:
1386                 case MBX_BEACON:
1387                 case MBX_DEL_LD_ENTRY:
1388                         break;
1389                 case MBX_READ_SPARM64:
1390                 case MBX_READ_LA:
1391                 case MBX_READ_LA64:
1392                 case MBX_REG_LOGIN:
1393                 case MBX_REG_LOGIN64:
1394                 case MBX_CONFIG_PORT:
1395                 case MBX_RUN_BIU_DIAG:
1396                         printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n",
1397                                phba->sysfs_mbox.mbox->mb.mbxCommand);
1398                         sysfs_mbox_idle(phba);
1399                         spin_unlock_irq(&phba->hbalock);
1400                         return -EPERM;
1401                 default:
1402                         printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n",
1403                                phba->sysfs_mbox.mbox->mb.mbxCommand);
1404                         sysfs_mbox_idle(phba);
1405                         spin_unlock_irq(&phba->hbalock);
1406                         return -EPERM;
1407                 }
1408
1409                 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
1410                         sysfs_mbox_idle(phba);
1411                         spin_unlock_irq(&phba->hbalock);
1412                         return  -EAGAIN;
1413                 }
1414
1415                 if ((vport->fc_flag & FC_OFFLINE_MODE) ||
1416                     (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE))){
1417
1418                         spin_unlock_irq(&phba->hbalock);
1419                         rc = lpfc_sli_issue_mbox (phba,
1420                                                   phba->sysfs_mbox.mbox,
1421                                                   MBX_POLL);
1422                         spin_lock_irq(&phba->hbalock);
1423
1424                 } else {
1425                         spin_unlock_irq(&phba->hbalock);
1426                         rc = lpfc_sli_issue_mbox_wait (phba,
1427                                                        phba->sysfs_mbox.mbox,
1428                                 lpfc_mbox_tmo_val(phba,
1429                                     phba->sysfs_mbox.mbox->mb.mbxCommand) * HZ);
1430                         spin_lock_irq(&phba->hbalock);
1431                 }
1432
1433                 if (rc != MBX_SUCCESS) {
1434                         if (rc == MBX_TIMEOUT) {
1435                                 phba->sysfs_mbox.mbox->mbox_cmpl =
1436                                         lpfc_sli_def_mbox_cmpl;
1437                                 phba->sysfs_mbox.mbox = NULL;
1438                         }
1439                         sysfs_mbox_idle(phba);
1440                         spin_unlock_irq(&phba->hbalock);
1441                         return  (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
1442                 }
1443                 phba->sysfs_mbox.state = SMBOX_READING;
1444         }
1445         else if (phba->sysfs_mbox.offset != off ||
1446                  phba->sysfs_mbox.state  != SMBOX_READING) {
1447                 printk(KERN_WARNING  "mbox_read: Bad State\n");
1448                 sysfs_mbox_idle(phba);
1449                 spin_unlock_irq(&phba->hbalock);
1450                 return -EAGAIN;
1451         }
1452
1453         memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);
1454
1455         phba->sysfs_mbox.offset = off + count;
1456
1457         if (phba->sysfs_mbox.offset == MAILBOX_CMD_SIZE)
1458                 sysfs_mbox_idle(phba);
1459
1460         spin_unlock_irq(&phba->hbalock);
1461
1462         return count;
1463 }
1464
1465 static struct bin_attribute sysfs_mbox_attr = {
1466         .attr = {
1467                 .name = "mbox",
1468                 .mode = S_IRUSR | S_IWUSR,
1469                 .owner = THIS_MODULE,
1470         },
1471         .size = MAILBOX_CMD_SIZE,
1472         .read = sysfs_mbox_read,
1473         .write = sysfs_mbox_write,
1474 };
1475
1476 int
1477 lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
1478 {
1479         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1480         int error;
1481
1482         error = sysfs_create_bin_file(&shost->shost_classdev.kobj,
1483                                                         &sysfs_ctlreg_attr);
1484         if (error)
1485                 goto out;
1486
1487         error = sysfs_create_bin_file(&shost->shost_classdev.kobj,
1488                                                         &sysfs_mbox_attr);
1489         if (error)
1490                 goto out_remove_ctlreg_attr;
1491
1492         return 0;
1493 out_remove_ctlreg_attr:
1494         sysfs_remove_bin_file(&shost->shost_classdev.kobj, &sysfs_ctlreg_attr);
1495 out:
1496         return error;
1497 }
1498
1499 void
1500 lpfc_free_sysfs_attr(struct lpfc_vport *vport)
1501 {
1502         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
1503
1504         sysfs_remove_bin_file(&shost->shost_classdev.kobj, &sysfs_mbox_attr);
1505         sysfs_remove_bin_file(&shost->shost_classdev.kobj, &sysfs_ctlreg_attr);
1506 }
1507
1508
1509 /*
1510  * Dynamic FC Host Attributes Support
1511  */
1512
1513 static void
1514 lpfc_get_host_port_id(struct Scsi_Host *shost)
1515 {
1516         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1517
1518         /* note: fc_myDID already in cpu endianness */
1519         fc_host_port_id(shost) = vport->fc_myDID;
1520 }
1521
1522 static void
1523 lpfc_get_host_port_type(struct Scsi_Host *shost)
1524 {
1525         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1526         struct lpfc_hba   *phba = vport->phba;
1527
1528         spin_lock_irq(shost->host_lock);
1529
1530         if (lpfc_is_link_up(phba)) {
1531                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1532                         if (vport->fc_flag & FC_PUBLIC_LOOP)
1533                                 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
1534                         else
1535                                 fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
1536                 } else {
1537                         if (vport->fc_flag & FC_FABRIC)
1538                                 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
1539                         else
1540                                 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
1541                 }
1542         } else
1543                 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
1544
1545         spin_unlock_irq(shost->host_lock);
1546 }
1547
1548 static void
1549 lpfc_get_host_port_state(struct Scsi_Host *shost)
1550 {
1551         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1552         struct lpfc_hba   *phba = vport->phba;
1553
1554         spin_lock_irq(shost->host_lock);
1555
1556         if (vport->fc_flag & FC_OFFLINE_MODE)
1557                 fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
1558         else {
1559                 switch (phba->link_state) {
1560                 case LPFC_LINK_UNKNOWN:
1561                 case LPFC_LINK_DOWN:
1562                         fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
1563                         break;
1564                 case LPFC_LINK_UP:
1565                 case LPFC_CLEAR_LA:
1566                         /* Links up, beyond this port_type reports state */
1567                         fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
1568                         break;
1569                 case LPFC_HBA_ERROR:
1570                         fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
1571                         break;
1572                 default:
1573                         fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
1574                         break;
1575                 }
1576         }
1577
1578         spin_unlock_irq(shost->host_lock);
1579 }
1580
1581 static void
1582 lpfc_get_host_speed(struct Scsi_Host *shost)
1583 {
1584         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1585         struct lpfc_hba   *phba = vport->phba;
1586
1587         spin_lock_irq(shost->host_lock);
1588
1589         if (lpfc_is_link_up(phba)) {
1590                 switch(phba->fc_linkspeed) {
1591                         case LA_1GHZ_LINK:
1592                                 fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
1593                         break;
1594                         case LA_2GHZ_LINK:
1595                                 fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
1596                         break;
1597                         case LA_4GHZ_LINK:
1598                                 fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
1599                         break;
1600                         case LA_8GHZ_LINK:
1601                                 fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
1602                         break;
1603                         default:
1604                                 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
1605                         break;
1606                 }
1607         }
1608
1609         spin_unlock_irq(shost->host_lock);
1610 }
1611
1612 static void
1613 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
1614 {
1615         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1616         struct lpfc_hba   *phba = vport->phba;
1617         u64 node_name;
1618
1619         spin_lock_irq(shost->host_lock);
1620
1621         if ((vport->fc_flag & FC_FABRIC) ||
1622             ((phba->fc_topology == TOPOLOGY_LOOP) &&
1623              (vport->fc_flag & FC_PUBLIC_LOOP)))
1624                 node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
1625         else
1626                 /* fabric is local port if there is no F/FL_Port */
1627                 node_name = wwn_to_u64(vport->fc_nodename.u.wwn);
1628
1629         spin_unlock_irq(shost->host_lock);
1630
1631         fc_host_fabric_name(shost) = node_name;
1632 }
1633
1634 static struct fc_host_statistics *
1635 lpfc_get_stats(struct Scsi_Host *shost)
1636 {
1637         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1638         struct lpfc_hba   *phba = vport->phba;
1639         struct lpfc_sli   *psli = &phba->sli;
1640         struct fc_host_statistics *hs = &phba->link_stats;
1641         struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
1642         LPFC_MBOXQ_t *pmboxq;
1643         MAILBOX_t *pmb;
1644         unsigned long seconds;
1645         int rc = 0;
1646
1647                                 /* prevent udev from issuing mailbox commands
1648                                  * until the port is configured.
1649                                  */
1650         if (phba->link_state < LPFC_LINK_DOWN ||
1651             !phba->mbox_mem_pool ||
1652             (phba->sli.sli_flag & LPFC_SLI2_ACTIVE) == 0)
1653                         return NULL;
1654
1655         if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
1656                 return NULL;
1657
1658         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1659         if (!pmboxq)
1660                 return NULL;
1661         memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1662
1663         pmb = &pmboxq->mb;
1664         pmb->mbxCommand = MBX_READ_STATUS;
1665         pmb->mbxOwner = OWN_HOST;
1666         pmboxq->context1 = NULL;
1667
1668         if ((vport->fc_flag & FC_OFFLINE_MODE) ||
1669                 (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1670                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1671         else
1672                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1673
1674         if (rc != MBX_SUCCESS) {
1675                 if (rc == MBX_TIMEOUT)
1676                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1677                 else
1678                         mempool_free(pmboxq, phba->mbox_mem_pool);
1679                 return NULL;
1680         }
1681
1682         memset(hs, 0, sizeof (struct fc_host_statistics));
1683
1684         hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
1685         hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256);
1686         hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
1687         hs->rx_words = (pmb->un.varRdStatus.rcvByteCnt * 256);
1688
1689         memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1690         pmb->mbxCommand = MBX_READ_LNK_STAT;
1691         pmb->mbxOwner = OWN_HOST;
1692         pmboxq->context1 = NULL;
1693
1694         if ((vport->fc_flag & FC_OFFLINE_MODE) ||
1695             (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1696                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1697         else
1698                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1699
1700         if (rc != MBX_SUCCESS) {
1701                 if (rc == MBX_TIMEOUT)
1702                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1703                 else
1704                         mempool_free( pmboxq, phba->mbox_mem_pool);
1705                 return NULL;
1706         }
1707
1708         hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
1709         hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
1710         hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
1711         hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
1712         hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
1713         hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
1714         hs->error_frames = pmb->un.varRdLnk.crcCnt;
1715
1716         hs->link_failure_count -= lso->link_failure_count;
1717         hs->loss_of_sync_count -= lso->loss_of_sync_count;
1718         hs->loss_of_signal_count -= lso->loss_of_signal_count;
1719         hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
1720         hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
1721         hs->invalid_crc_count -= lso->invalid_crc_count;
1722         hs->error_frames -= lso->error_frames;
1723
1724         if (phba->fc_topology == TOPOLOGY_LOOP) {
1725                 hs->lip_count = (phba->fc_eventTag >> 1);
1726                 hs->lip_count -= lso->link_events;
1727                 hs->nos_count = -1;
1728         } else {
1729                 hs->lip_count = -1;
1730                 hs->nos_count = (phba->fc_eventTag >> 1);
1731                 hs->nos_count -= lso->link_events;
1732         }
1733
1734         hs->dumped_frames = -1;
1735
1736         seconds = get_seconds();
1737         if (seconds < psli->stats_start)
1738                 hs->seconds_since_last_reset = seconds +
1739                                 ((unsigned long)-1 - psli->stats_start);
1740         else
1741                 hs->seconds_since_last_reset = seconds - psli->stats_start;
1742
1743         mempool_free(pmboxq, phba->mbox_mem_pool);
1744
1745         return hs;
1746 }
1747
1748 static void
1749 lpfc_reset_stats(struct Scsi_Host *shost)
1750 {
1751         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1752         struct lpfc_hba   *phba = vport->phba;
1753         struct lpfc_sli   *psli = &phba->sli;
1754         struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets;
1755         LPFC_MBOXQ_t *pmboxq;
1756         MAILBOX_t *pmb;
1757         int rc = 0;
1758
1759         if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
1760                 return;
1761
1762         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1763         if (!pmboxq)
1764                 return;
1765         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1766
1767         pmb = &pmboxq->mb;
1768         pmb->mbxCommand = MBX_READ_STATUS;
1769         pmb->mbxOwner = OWN_HOST;
1770         pmb->un.varWords[0] = 0x1; /* reset request */
1771         pmboxq->context1 = NULL;
1772
1773         if ((vport->fc_flag & FC_OFFLINE_MODE) ||
1774                 (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1775                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1776         else
1777                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1778
1779         if (rc != MBX_SUCCESS) {
1780                 if (rc == MBX_TIMEOUT)
1781                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1782                 else
1783                         mempool_free(pmboxq, phba->mbox_mem_pool);
1784                 return;
1785         }
1786
1787         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1788         pmb->mbxCommand = MBX_READ_LNK_STAT;
1789         pmb->mbxOwner = OWN_HOST;
1790         pmboxq->context1 = NULL;
1791
1792         if ((vport->fc_flag & FC_OFFLINE_MODE) ||
1793             (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1794                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1795         else
1796                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1797
1798         if (rc != MBX_SUCCESS) {
1799                 if (rc == MBX_TIMEOUT)
1800                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1801                 else
1802                         mempool_free( pmboxq, phba->mbox_mem_pool);
1803                 return;
1804         }
1805
1806         lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
1807         lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
1808         lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
1809         lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
1810         lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
1811         lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
1812         lso->error_frames = pmb->un.varRdLnk.crcCnt;
1813         lso->link_events = (phba->fc_eventTag >> 1);
1814
1815         psli->stats_start = get_seconds();
1816
1817         mempool_free(pmboxq, phba->mbox_mem_pool);
1818
1819         return;
1820 }
1821
1822 /*
1823  * The LPFC driver treats linkdown handling as target loss events so there
1824  * are no sysfs handlers for link_down_tmo.
1825  */
1826
1827 static struct lpfc_nodelist *
1828 lpfc_get_node_by_target(struct scsi_target *starget)
1829 {
1830         struct Scsi_Host  *shost = dev_to_shost(starget->dev.parent);
1831         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
1832         struct lpfc_nodelist *ndlp;
1833
1834         spin_lock_irq(shost->host_lock);
1835         /* Search for this, mapped, target ID */
1836         list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
1837                 if (ndlp->nlp_state == NLP_STE_MAPPED_NODE &&
1838                     starget->id == ndlp->nlp_sid) {
1839                         spin_unlock_irq(shost->host_lock);
1840                         return ndlp;
1841                 }
1842         }
1843         spin_unlock_irq(shost->host_lock);
1844         return NULL;
1845 }
1846
1847 static void
1848 lpfc_get_starget_port_id(struct scsi_target *starget)
1849 {
1850         struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
1851
1852         fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1;
1853 }
1854
1855 static void
1856 lpfc_get_starget_node_name(struct scsi_target *starget)
1857 {
1858         struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
1859
1860         fc_starget_node_name(starget) =
1861                 ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0;
1862 }
1863
1864 static void
1865 lpfc_get_starget_port_name(struct scsi_target *starget)
1866 {
1867         struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget);
1868
1869         fc_starget_port_name(starget) =
1870                 ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0;
1871 }
1872
1873 static void
1874 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
1875 {
1876         if (timeout)
1877                 rport->dev_loss_tmo = timeout;
1878         else
1879                 rport->dev_loss_tmo = 1;
1880 }
1881
1882
1883 #define lpfc_rport_show_function(field, format_string, sz, cast)        \
1884 static ssize_t                                                          \
1885 lpfc_show_rport_##field (struct class_device *cdev, char *buf)          \
1886 {                                                                       \
1887         struct fc_rport *rport = transport_class_to_rport(cdev);        \
1888         struct lpfc_rport_data *rdata = rport->hostdata;                \
1889         return snprintf(buf, sz, format_string,                         \
1890                 (rdata->target) ? cast rdata->target->field : 0);       \
1891 }
1892
1893 #define lpfc_rport_rd_attr(field, format_string, sz)                    \
1894         lpfc_rport_show_function(field, format_string, sz, )            \
1895 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)
1896
1897
1898 struct fc_function_template lpfc_transport_functions = {
1899         /* fixed attributes the driver supports */
1900         .show_host_node_name = 1,
1901         .show_host_port_name = 1,
1902         .show_host_supported_classes = 1,
1903         .show_host_supported_fc4s = 1,
1904         .show_host_supported_speeds = 1,
1905         .show_host_maxframe_size = 1,
1906
1907         /* dynamic attributes the driver supports */
1908         .get_host_port_id = lpfc_get_host_port_id,
1909         .show_host_port_id = 1,
1910
1911         .get_host_port_type = lpfc_get_host_port_type,
1912         .show_host_port_type = 1,
1913
1914         .get_host_port_state = lpfc_get_host_port_state,
1915         .show_host_port_state = 1,
1916
1917         /* active_fc4s is shown but doesn't change (thus no get function) */
1918         .show_host_active_fc4s = 1,
1919
1920         .get_host_speed = lpfc_get_host_speed,
1921         .show_host_speed = 1,
1922
1923         .get_host_fabric_name = lpfc_get_host_fabric_name,
1924         .show_host_fabric_name = 1,
1925
1926         /*
1927          * The LPFC driver treats linkdown handling as target loss events
1928          * so there are no sysfs handlers for link_down_tmo.
1929          */
1930
1931         .get_fc_host_stats = lpfc_get_stats,
1932         .reset_fc_host_stats = lpfc_reset_stats,
1933
1934         .dd_fcrport_size = sizeof(struct lpfc_rport_data),
1935         .show_rport_maxframe_size = 1,
1936         .show_rport_supported_classes = 1,
1937
1938         .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
1939         .show_rport_dev_loss_tmo = 1,
1940
1941         .get_starget_port_id  = lpfc_get_starget_port_id,
1942         .show_starget_port_id = 1,
1943
1944         .get_starget_node_name = lpfc_get_starget_node_name,
1945         .show_starget_node_name = 1,
1946
1947         .get_starget_port_name = lpfc_get_starget_port_name,
1948         .show_starget_port_name = 1,
1949
1950         .issue_fc_host_lip = lpfc_issue_lip,
1951         .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk,
1952         .terminate_rport_io = lpfc_terminate_rport_io,
1953 };
1954
1955 void
1956 lpfc_get_cfgparam(struct lpfc_hba *phba)
1957 {
1958         lpfc_log_verbose_init(phba, lpfc_log_verbose);
1959         lpfc_cr_delay_init(phba, lpfc_cr_delay);
1960         lpfc_cr_count_init(phba, lpfc_cr_count);
1961         lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support);
1962         lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl);
1963         lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type);
1964         lpfc_lun_queue_depth_init(phba, lpfc_lun_queue_depth);
1965         lpfc_fcp_class_init(phba, lpfc_fcp_class);
1966         lpfc_use_adisc_init(phba, lpfc_use_adisc);
1967         lpfc_ack0_init(phba, lpfc_ack0);
1968         lpfc_topology_init(phba, lpfc_topology);
1969         lpfc_scan_down_init(phba, lpfc_scan_down);
1970         lpfc_link_speed_init(phba, lpfc_link_speed);
1971         lpfc_fdmi_on_init(phba, lpfc_fdmi_on);
1972         lpfc_discovery_threads_init(phba, lpfc_discovery_threads);
1973         lpfc_max_luns_init(phba, lpfc_max_luns);
1974         lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
1975         lpfc_use_msi_init(phba, lpfc_use_msi);
1976         lpfc_devloss_tmo_init(phba, lpfc_devloss_tmo);
1977         lpfc_nodev_tmo_init(phba, lpfc_nodev_tmo);
1978         phba->cfg_poll = lpfc_poll;
1979         phba->cfg_soft_wwnn = 0L;
1980         phba->cfg_soft_wwpn = 0L;
1981
1982         /*
1983          * The total number of segments is the configuration value plus 2
1984          * since the IOCB need a command and response bde.
1985          */
1986         phba->cfg_sg_seg_cnt = LPFC_SG_SEG_CNT + 2;
1987
1988         /*
1989          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
1990          * used to create the sg_dma_buf_pool must be dynamically calculated
1991          */
1992         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
1993                         sizeof(struct fcp_rsp) +
1994                         (phba->cfg_sg_seg_cnt * sizeof(struct ulp_bde64));
1995
1996
1997         lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth);
1998
1999         return;
2000 }