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) 2004-2005 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
  43 static void
  44 lpfc_jedec_to_ascii(int incr, char hdw[])
  45 {
  46         int i, j;
  47         for (i = 0; i < 8; i++) {
  48                 j = (incr & 0xf);
  49                 if (j <= 9)
  50                         hdw[7 - i] = 0x30 +  j;
  51                  else
  52                         hdw[7 - i] = 0x61 + j - 10;
  53                 incr = (incr >> 4);
  54         }
  55         hdw[8] = 0;
  56         return;
  57 }
  58
  59 static ssize_t
  60 lpfc_drvr_version_show(struct class_device *cdev, char *buf)
  61 {
  62         return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n");
  63 }
  64
  65 static ssize_t
  66 management_version_show(struct class_device *cdev, char *buf)
  67 {
  68         return snprintf(buf, PAGE_SIZE, DFC_API_VERSION "\n");
  69 }
  70
  71 static ssize_t
  72 lpfc_info_show(struct class_device *cdev, char *buf)
  73 {
  74         struct Scsi_Host *host = class_to_shost(cdev);
  75         return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host));
  76 }
  77
  78 static ssize_t
  79 lpfc_serialnum_show(struct class_device *cdev, char *buf)
  80 {
  81         struct Scsi_Host *host = class_to_shost(cdev);
  82         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
  83         return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber);
  84 }
  85
  86 static ssize_t
  87 lpfc_modeldesc_show(struct class_device *cdev, char *buf)
  88 {
  89         struct Scsi_Host *host = class_to_shost(cdev);
  90         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
  91         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc);
  92 }
  93
  94 static ssize_t
  95 lpfc_modelname_show(struct class_device *cdev, char *buf)
  96 {
  97         struct Scsi_Host *host = class_to_shost(cdev);
  98         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
  99         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName);
 100 }
 101
 102 static ssize_t
 103 lpfc_programtype_show(struct class_device *cdev, char *buf)
 104 {
 105         struct Scsi_Host *host = class_to_shost(cdev);
 106         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 107         return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType);
 108 }
 109
 110 static ssize_t
 111 lpfc_portnum_show(struct class_device *cdev, char *buf)
 112 {
 113         struct Scsi_Host *host = class_to_shost(cdev);
 114         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 115         return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port);
 116 }
 117
 118 static ssize_t
 119 lpfc_fwrev_show(struct class_device *cdev, char *buf)
 120 {
 121         struct Scsi_Host *host = class_to_shost(cdev);
 122         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 123         char fwrev[32];
 124         lpfc_decode_firmware_rev(phba, fwrev, 1);
 125         return snprintf(buf, PAGE_SIZE, "%s\n",fwrev);
 126 }
 127
 128 static ssize_t
 129 lpfc_hdw_show(struct class_device *cdev, char *buf)
 130 {
 131         char hdw[9];
 132         struct Scsi_Host *host = class_to_shost(cdev);
 133         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 134         lpfc_vpd_t *vp = &phba->vpd;
 135         lpfc_jedec_to_ascii(vp->rev.biuRev, hdw);
 136         return snprintf(buf, PAGE_SIZE, "%s\n", hdw);
 137 }
 138 static ssize_t
 139 lpfc_option_rom_version_show(struct class_device *cdev, char *buf)
 140 {
 141         struct Scsi_Host *host = class_to_shost(cdev);
 142         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 143         return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion);
 144 }
 145 static ssize_t
 146 lpfc_state_show(struct class_device *cdev, char *buf)
 147 {
 148         struct Scsi_Host *host = class_to_shost(cdev);
 149         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 150         int len = 0;
 151         switch (phba->hba_state) {
 152         case LPFC_INIT_START:
 153         case LPFC_INIT_MBX_CMDS:
 154         case LPFC_LINK_DOWN:
 155                 len += snprintf(buf + len, PAGE_SIZE-len, "Link Down\n");
 156                 break;
 157         case LPFC_LINK_UP:
 158         case LPFC_LOCAL_CFG_LINK:
 159                 len += snprintf(buf + len, PAGE_SIZE-len, "Link Up\n");
 160                 break;
 161         case LPFC_FLOGI:
 162         case LPFC_FABRIC_CFG_LINK:
 163         case LPFC_NS_REG:
 164         case LPFC_NS_QRY:
 165         case LPFC_BUILD_DISC_LIST:
 166         case LPFC_DISC_AUTH:
 167         case LPFC_CLEAR_LA:
 168                 len += snprintf(buf + len, PAGE_SIZE-len,
 169                                 "Link Up - Discovery\n");
 170                 break;
 171         case LPFC_HBA_READY:
 172                 len += snprintf(buf + len, PAGE_SIZE-len,
 173                                 "Link Up - Ready:\n");
 174                 if (phba->fc_topology == TOPOLOGY_LOOP) {
 175                         if (phba->fc_flag & FC_PUBLIC_LOOP)
 176                                 len += snprintf(buf + len, PAGE_SIZE-len,
 177                                                 "   Public Loop\n");
 178                         else
 179                                 len += snprintf(buf + len, PAGE_SIZE-len,
 180                                                 "   Private Loop\n");
 181                 } else {
 182                         if (phba->fc_flag & FC_FABRIC)
 183                                 len += snprintf(buf + len, PAGE_SIZE-len,
 184                                                 "   Fabric\n");
 185                         else
 186                                 len += snprintf(buf + len, PAGE_SIZE-len,
 187                                                 "   Point-2-Point\n");
 188                 }
 189         }
 190         return len;
 191 }
 192
 193 static ssize_t
 194 lpfc_num_discovered_ports_show(struct class_device *cdev, char *buf)
 195 {
 196         struct Scsi_Host *host = class_to_shost(cdev);
 197         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 198         return snprintf(buf, PAGE_SIZE, "%d\n", phba->fc_map_cnt +
 199                                                         phba->fc_unmap_cnt);
 200 }
 201
 202
 203 static int
 204 lpfc_issue_lip(struct Scsi_Host *host)
 205 {
 206         struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata[0];
 207         LPFC_MBOXQ_t *pmboxq;
 208         int mbxstatus = MBXERR_ERROR;
 209
 210         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
 211             (phba->hba_state != LPFC_HBA_READY))
 212                 return -EPERM;
 213
 214         pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL);
 215
 216         if (!pmboxq)
 217                 return -ENOMEM;
 218
 219         memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t));
 220         lpfc_init_link(phba, pmboxq, phba->cfg_topology, phba->cfg_link_speed);
 221         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
 222
 223         if (mbxstatus == MBX_TIMEOUT)
 224                 pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 225         else
 226                 mempool_free(pmboxq, phba->mbox_mem_pool);
 227
 228         if (mbxstatus == MBXERR_ERROR)
 229                 return -EIO;
 230
 231         return 0;
 232 }
 233
 234 static ssize_t
 235 lpfc_nport_evt_cnt_show(struct class_device *cdev, char *buf)
 236 {
 237         struct Scsi_Host *host = class_to_shost(cdev);
 238         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 239         return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt);
 240 }
 241
 242 static ssize_t
 243 lpfc_board_online_show(struct class_device *cdev, char *buf)
 244 {
 245         struct Scsi_Host *host = class_to_shost(cdev);
 246         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 247
 248         if (phba->fc_flag & FC_OFFLINE_MODE)
 249                 return snprintf(buf, PAGE_SIZE, "0\n");
 250         else
 251                 return snprintf(buf, PAGE_SIZE, "1\n");
 252 }
 253
 254 static ssize_t
 255 lpfc_board_online_store(struct class_device *cdev, const char *buf,
 256                                                                 size_t count)
 257 {
 258         struct Scsi_Host *host = class_to_shost(cdev);
 259         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 260         struct completion online_compl;
 261         int val=0, status=0;
 262
 263         if (sscanf(buf, "%d", &val) != 1)
 264                 return -EINVAL;
 265
 266         init_completion(&online_compl);
 267
 268         if (val)
 269                 lpfc_workq_post_event(phba, &status, &online_compl,
 270                                                         LPFC_EVT_ONLINE);
 271         else
 272                 lpfc_workq_post_event(phba, &status, &online_compl,
 273                                                         LPFC_EVT_OFFLINE);
 274         wait_for_completion(&online_compl);
 275         if (!status)
 276                 return strlen(buf);
 277         else
 278                 return -EIO;
 279 }
 280
 281 static ssize_t
 282 lpfc_poll_show(struct class_device *cdev, char *buf)
 283 {
 284         struct Scsi_Host *host = class_to_shost(cdev);
 285         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 286
 287         return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll);
 288 }
 289
 290 static ssize_t
 291 lpfc_poll_store(struct class_device *cdev, const char *buf,
 292                 size_t count)
 293 {
 294         struct Scsi_Host *host = class_to_shost(cdev);
 295         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 296         uint32_t creg_val;
 297         uint32_t old_val;
 298         int val=0;
 299
 300         if (!isdigit(buf[0]))
 301                 return -EINVAL;
 302
 303         if (sscanf(buf, "%i", &val) != 1)
 304                 return -EINVAL;
 305
 306         if ((val & 0x3) != val)
 307                 return -EINVAL;
 308
 309         spin_lock_irq(phba->host->host_lock);
 310
 311         old_val = phba->cfg_poll;
 312
 313         if (val & ENABLE_FCP_RING_POLLING) {
 314                 if ((val & DISABLE_FCP_RING_INT) &&
 315                     !(old_val & DISABLE_FCP_RING_INT)) {
 316                         creg_val = readl(phba->HCregaddr);
 317                         creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
 318                         writel(creg_val, phba->HCregaddr);
 319                         readl(phba->HCregaddr); /* flush */
 320
 321                         lpfc_poll_start_timer(phba);
 322                 }
 323         } else if (val != 0x0) {
 324                 spin_unlock_irq(phba->host->host_lock);
 325                 return -EINVAL;
 326         }
 327
 328         if (!(val & DISABLE_FCP_RING_INT) &&
 329             (old_val & DISABLE_FCP_RING_INT))
 330         {
 331                 spin_unlock_irq(phba->host->host_lock);
 332                 del_timer(&phba->fcp_poll_timer);
 333                 spin_lock_irq(phba->host->host_lock);
 334                 creg_val = readl(phba->HCregaddr);
 335                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
 336                 writel(creg_val, phba->HCregaddr);
 337                 readl(phba->HCregaddr); /* flush */
 338         }
 339
 340         phba->cfg_poll = val;
 341
 342         spin_unlock_irq(phba->host->host_lock);
 343
 344         return strlen(buf);
 345 }
 346
 347 #define lpfc_param_show(attr)   \
 348 static ssize_t \
 349 lpfc_##attr##_show(struct class_device *cdev, char *buf) \
 350 { \
 351         struct Scsi_Host *host = class_to_shost(cdev);\
 352         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];\
 353         int val = 0;\
 354         val = phba->cfg_##attr;\
 355         return snprintf(buf, PAGE_SIZE, "%d\n",\
 356                         phba->cfg_##attr);\
 357 }
 358
 359 #define lpfc_param_hex_show(attr)       \
 360 static ssize_t \
 361 lpfc_##attr##_show(struct class_device *cdev, char *buf) \
 362 { \
 363         struct Scsi_Host *host = class_to_shost(cdev);\
 364         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];\
 365         int val = 0;\
 366         val = phba->cfg_##attr;\
 367         return snprintf(buf, PAGE_SIZE, "%#x\n",\
 368                         phba->cfg_##attr);\
 369 }
 370
 371 #define lpfc_param_init(attr, default, minval, maxval)  \
 372 static int \
 373 lpfc_##attr##_init(struct lpfc_hba *phba, int val) \
 374 { \
 375         if (val >= minval && val <= maxval) {\
 376                 phba->cfg_##attr = val;\
 377                 return 0;\
 378         }\
 379         lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
 380                         "%d:0449 lpfc_"#attr" attribute cannot be set to %d, "\
 381                         "allowed range is ["#minval", "#maxval"]\n", \
 382                         phba->brd_no, val); \
 383         phba->cfg_##attr = default;\
 384         return -EINVAL;\
 385 }
 386
 387 #define lpfc_param_set(attr, default, minval, maxval)   \
 388 static int \
 389 lpfc_##attr##_set(struct lpfc_hba *phba, int val) \
 390 { \
 391         if (val >= minval && val <= maxval) {\
 392                 phba->cfg_##attr = val;\
 393                 return 0;\
 394         }\
 395         lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \
 396                         "%d:0450 lpfc_"#attr" attribute cannot be set to %d, "\
 397                         "allowed range is ["#minval", "#maxval"]\n", \
 398                         phba->brd_no, val); \
 399         return -EINVAL;\
 400 }
 401
 402 #define lpfc_param_store(attr)  \
 403 static ssize_t \
 404 lpfc_##attr##_store(struct class_device *cdev, const char *buf, size_t count) \
 405 { \
 406         struct Scsi_Host *host = class_to_shost(cdev);\
 407         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];\
 408         int val=0;\
 409         if (!isdigit(buf[0]))\
 410                 return -EINVAL;\
 411         if (sscanf(buf, "%i", &val) != 1)\
 412                 return -EINVAL;\
 413         if (lpfc_##attr##_set(phba, val) == 0) \
 414                 return strlen(buf);\
 415         else \
 416                 return -EINVAL;\
 417 }
 418
 419 #define LPFC_ATTR(name, defval, minval, maxval, desc) \
 420 static int lpfc_##name = defval;\
 421 module_param(lpfc_##name, int, 0);\
 422 MODULE_PARM_DESC(lpfc_##name, desc);\
 423 lpfc_param_init(name, defval, minval, maxval)
 424
 425 #define LPFC_ATTR_R(name, defval, minval, maxval, desc) \
 426 static int lpfc_##name = defval;\
 427 module_param(lpfc_##name, int, 0);\
 428 MODULE_PARM_DESC(lpfc_##name, desc);\
 429 lpfc_param_show(name)\
 430 lpfc_param_init(name, defval, minval, maxval)\
 431 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
 432
 433 #define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \
 434 static int lpfc_##name = defval;\
 435 module_param(lpfc_##name, int, 0);\
 436 MODULE_PARM_DESC(lpfc_##name, desc);\
 437 lpfc_param_show(name)\
 438 lpfc_param_init(name, defval, minval, maxval)\
 439 lpfc_param_set(name, defval, minval, maxval)\
 440 lpfc_param_store(name)\
 441 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
 442                          lpfc_##name##_show, lpfc_##name##_store)
 443
 444 #define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \
 445 static int lpfc_##name = defval;\
 446 module_param(lpfc_##name, int, 0);\
 447 MODULE_PARM_DESC(lpfc_##name, desc);\
 448 lpfc_param_hex_show(name)\
 449 lpfc_param_init(name, defval, minval, maxval)\
 450 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL)
 451
 452 #define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \
 453 static int lpfc_##name = defval;\
 454 module_param(lpfc_##name, int, 0);\
 455 MODULE_PARM_DESC(lpfc_##name, desc);\
 456 lpfc_param_hex_show(name)\
 457 lpfc_param_init(name, defval, minval, maxval)\
 458 lpfc_param_set(name, defval, minval, maxval)\
 459 lpfc_param_store(name)\
 460 static CLASS_DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\
 461                          lpfc_##name##_show, lpfc_##name##_store)
 462
 463 static CLASS_DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL);
 464 static CLASS_DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL);
 465 static CLASS_DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL);
 466 static CLASS_DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL);
 467 static CLASS_DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL);
 468 static CLASS_DEVICE_ATTR(portnum, S_IRUGO, lpfc_portnum_show, NULL);
 469 static CLASS_DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL);
 470 static CLASS_DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL);
 471 static CLASS_DEVICE_ATTR(state, S_IRUGO, lpfc_state_show, NULL);
 472 static CLASS_DEVICE_ATTR(option_rom_version, S_IRUGO,
 473                                         lpfc_option_rom_version_show, NULL);
 474 static CLASS_DEVICE_ATTR(num_discovered_ports, S_IRUGO,
 475                                         lpfc_num_discovered_ports_show, NULL);
 476 static CLASS_DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL);
 477 static CLASS_DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show,
 478                          NULL);
 479 static CLASS_DEVICE_ATTR(management_version, S_IRUGO, management_version_show,
 480                          NULL);
 481 static CLASS_DEVICE_ATTR(board_online, S_IRUGO | S_IWUSR,
 482                          lpfc_board_online_show, lpfc_board_online_store);
 483
 484 static int lpfc_poll = 0;
 485 module_param(lpfc_poll, int, 0);
 486 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:"
 487                  " 0 - none,"
 488                  " 1 - poll with interrupts enabled"
 489                  " 3 - poll and disable FCP ring interrupts");
 490
 491 static CLASS_DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR,
 492                          lpfc_poll_show, lpfc_poll_store);
 493
 494 /*
 495 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being
 496 # deluged with LOTS of information.
 497 # You can set a bit mask to record specific types of verbose messages:
 498 #
 499 # LOG_ELS                       0x1        ELS events
 500 # LOG_DISCOVERY                 0x2        Link discovery events
 501 # LOG_MBOX                      0x4        Mailbox events
 502 # LOG_INIT                      0x8        Initialization events
 503 # LOG_LINK_EVENT                0x10       Link events
 504 # LOG_IP                        0x20       IP traffic history
 505 # LOG_FCP                       0x40       FCP traffic history
 506 # LOG_NODE                      0x80       Node table events
 507 # LOG_MISC                      0x400      Miscellaneous events
 508 # LOG_SLI                       0x800      SLI events
 509 # LOG_CHK_COND                  0x1000     FCP Check condition flag
 510 # LOG_LIBDFC                    0x2000     LIBDFC events
 511 # LOG_ALL_MSG                   0xffff     LOG all messages
 512 */
 513 LPFC_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffff, "Verbose logging bit-mask");
 514
 515 /*
 516 # lun_queue_depth:  This parameter is used to limit the number of outstanding
 517 # commands per FCP LUN. Value range is [1,128]. Default value is 30.
 518 */
 519 LPFC_ATTR_R(lun_queue_depth, 30, 1, 128,
 520             "Max number of FCP commands we can queue to a specific LUN");
 521
 522 /*
 523 # Some disk devices have a "select ID" or "select Target" capability.
 524 # From a protocol standpoint "select ID" usually means select the
 525 # Fibre channel "ALPA".  In the FC-AL Profile there is an "informative
 526 # annex" which contains a table that maps a "select ID" (a number
 527 # between 0 and 7F) to an ALPA.  By default, for compatibility with
 528 # older drivers, the lpfc driver scans this table from low ALPA to high
 529 # ALPA.
 530 #
 531 # Turning on the scan-down variable (on  = 1, off = 0) will
 532 # cause the lpfc driver to use an inverted table, effectively
 533 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1.
 534 #
 535 # (Note: This "select ID" functionality is a LOOP ONLY characteristic
 536 # and will not work across a fabric. Also this parameter will take
 537 # effect only in the case when ALPA map is not available.)
 538 */
 539 LPFC_ATTR_R(scan_down, 1, 0, 1,
 540              "Start scanning for devices from highest ALPA to lowest");
 541
 542 /*
 543 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear
 544 # until the timer expires. Value range is [0,255]. Default value is 30.
 545 # NOTE: this MUST be less then the SCSI Layer command timeout - 1.
 546 */
 547 LPFC_ATTR_RW(nodev_tmo, 30, 0, 255,
 548              "Seconds driver will hold I/O waiting for a device to come back");
 549
 550 /*
 551 # lpfc_topology:  link topology for init link
 552 #            0x0  = attempt loop mode then point-to-point
 553 #            0x02 = attempt point-to-point mode only
 554 #            0x04 = attempt loop mode only
 555 #            0x06 = attempt point-to-point mode then loop
 556 # Set point-to-point mode if you want to run as an N_Port.
 557 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6].
 558 # Default value is 0.
 559 */
 560 LPFC_ATTR_R(topology, 0, 0, 6, "Select Fibre Channel topology");
 561
 562 /*
 563 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel
 564 # connection.
 565 #       0  = auto select (default)
 566 #       1  = 1 Gigabaud
 567 #       2  = 2 Gigabaud
 568 #       4  = 4 Gigabaud
 569 # Value range is [0,4]. Default value is 0.
 570 */
 571 LPFC_ATTR_R(link_speed, 0, 0, 4, "Select link speed");
 572
 573 /*
 574 # lpfc_fcp_class:  Determines FC class to use for the FCP protocol.
 575 # Value range is [2,3]. Default value is 3.
 576 */
 577 LPFC_ATTR_R(fcp_class, 3, 2, 3,
 578              "Select Fibre Channel class of service for FCP sequences");
 579
 580 /*
 581 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range
 582 # is [0,1]. Default value is 0.
 583 */
 584 LPFC_ATTR_RW(use_adisc, 0, 0, 1,
 585              "Use ADISC on rediscovery to authenticate FCP devices");
 586
 587 /*
 588 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value
 589 # range is [0,1]. Default value is 0.
 590 */
 591 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support");
 592
 593 /*
 594 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing
 595 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take
 596 # value [0,63]. cr_count can take value [0,255]. Default value of cr_delay
 597 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if
 598 # cr_delay is set to 0.
 599 */
 600 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an"
 601                 "interrupt response is generated");
 602
 603 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an"
 604                 "interrupt response is generated");
 605
 606 /*
 607 # lpfc_fdmi_on: controls FDMI support.
 608 #       0 = no FDMI support
 609 #       1 = support FDMI without attribute of hostname
 610 #       2 = support FDMI with attribute of hostname
 611 # Value range [0,2]. Default value is 0.
 612 */
 613 LPFC_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support");
 614
 615 /*
 616 # Specifies the maximum number of ELS cmds we can have outstanding (for
 617 # discovery). Value range is [1,64]. Default value = 32.
 618 */
 619 LPFC_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands"
 620                  "during discovery");
 621
 622 /*
 623 # lpfc_max_luns: maximum number of LUNs per target driver will support
 624 # Value range is [1,32768]. Default value is 256.
 625 # NOTE: The SCSI layer will scan each target for this many luns
 626 */
 627 LPFC_ATTR_R(max_luns, 256, 1, 32768,
 628              "Maximum number of LUNs per target driver will support");
 629
 630 /*
 631 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring.
 632 # Value range is [1,255], default value is 10.
 633 */
 634 LPFC_ATTR_RW(poll_tmo, 10, 1, 255,
 635              "Milliseconds driver will wait between polling FCP ring");
 636
 637 struct class_device_attribute *lpfc_host_attrs[] = {
 638         &class_device_attr_info,
 639         &class_device_attr_serialnum,
 640         &class_device_attr_modeldesc,
 641         &class_device_attr_modelname,
 642         &class_device_attr_programtype,
 643         &class_device_attr_portnum,
 644         &class_device_attr_fwrev,
 645         &class_device_attr_hdw,
 646         &class_device_attr_option_rom_version,
 647         &class_device_attr_state,
 648         &class_device_attr_num_discovered_ports,
 649         &class_device_attr_lpfc_drvr_version,
 650         &class_device_attr_lpfc_log_verbose,
 651         &class_device_attr_lpfc_lun_queue_depth,
 652         &class_device_attr_lpfc_nodev_tmo,
 653         &class_device_attr_lpfc_fcp_class,
 654         &class_device_attr_lpfc_use_adisc,
 655         &class_device_attr_lpfc_ack0,
 656         &class_device_attr_lpfc_topology,
 657         &class_device_attr_lpfc_scan_down,
 658         &class_device_attr_lpfc_link_speed,
 659         &class_device_attr_lpfc_cr_delay,
 660         &class_device_attr_lpfc_cr_count,
 661         &class_device_attr_lpfc_fdmi_on,
 662         &class_device_attr_lpfc_max_luns,
 663         &class_device_attr_nport_evt_cnt,
 664         &class_device_attr_management_version,
 665         &class_device_attr_board_online,
 666         &class_device_attr_lpfc_poll,
 667         &class_device_attr_lpfc_poll_tmo,
 668         NULL,
 669 };
 670
 671 static ssize_t
 672 sysfs_ctlreg_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
 673 {
 674         size_t buf_off;
 675         struct Scsi_Host *host = class_to_shost(container_of(kobj,
 676                                              struct class_device, kobj));
 677         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 678
 679         if ((off + count) > FF_REG_AREA_SIZE)
 680                 return -ERANGE;
 681
 682         if (count == 0) return 0;
 683
 684         if (off % 4 || count % 4 || (unsigned long)buf % 4)
 685                 return -EINVAL;
 686
 687         spin_lock_irq(phba->host->host_lock);
 688
 689         if (!(phba->fc_flag & FC_OFFLINE_MODE)) {
 690                 spin_unlock_irq(phba->host->host_lock);
 691                 return -EPERM;
 692         }
 693
 694         for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t))
 695                 writel(*((uint32_t *)(buf + buf_off)),
 696                        phba->ctrl_regs_memmap_p + off + buf_off);
 697
 698         spin_unlock_irq(phba->host->host_lock);
 699
 700         return count;
 701 }
 702
 703 static ssize_t
 704 sysfs_ctlreg_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
 705 {
 706         size_t buf_off;
 707         uint32_t * tmp_ptr;
 708         struct Scsi_Host *host = class_to_shost(container_of(kobj,
 709                                              struct class_device, kobj));
 710         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 711
 712         if (off > FF_REG_AREA_SIZE)
 713                 return -ERANGE;
 714
 715         if ((off + count) > FF_REG_AREA_SIZE)
 716                 count = FF_REG_AREA_SIZE - off;
 717
 718         if (count == 0) return 0;
 719
 720         if (off % 4 || count % 4 || (unsigned long)buf % 4)
 721                 return -EINVAL;
 722
 723         spin_lock_irq(phba->host->host_lock);
 724
 725         for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) {
 726                 tmp_ptr = (uint32_t *)(buf + buf_off);
 727                 *tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off);
 728         }
 729
 730         spin_unlock_irq(phba->host->host_lock);
 731
 732         return count;
 733 }
 734
 735 static struct bin_attribute sysfs_ctlreg_attr = {
 736         .attr = {
 737                 .name = "ctlreg",
 738                 .mode = S_IRUSR | S_IWUSR,
 739                 .owner = THIS_MODULE,
 740         },
 741         .size = 256,
 742         .read = sysfs_ctlreg_read,
 743         .write = sysfs_ctlreg_write,
 744 };
 745
 746
 747 static void
 748 sysfs_mbox_idle (struct lpfc_hba * phba)
 749 {
 750         phba->sysfs_mbox.state = SMBOX_IDLE;
 751         phba->sysfs_mbox.offset = 0;
 752
 753         if (phba->sysfs_mbox.mbox) {
 754                 mempool_free(phba->sysfs_mbox.mbox,
 755                              phba->mbox_mem_pool);
 756                 phba->sysfs_mbox.mbox = NULL;
 757         }
 758 }
 759
 760 static ssize_t
 761 sysfs_mbox_write(struct kobject *kobj, char *buf, loff_t off, size_t count)
 762 {
 763         struct Scsi_Host * host =
 764                 class_to_shost(container_of(kobj, struct class_device, kobj));
 765         struct lpfc_hba * phba = (struct lpfc_hba*)host->hostdata[0];
 766         struct lpfcMboxq * mbox = NULL;
 767
 768         if ((count + off) > MAILBOX_CMD_SIZE)
 769                 return -ERANGE;
 770
 771         if (off % 4 ||  count % 4 || (unsigned long)buf % 4)
 772                 return -EINVAL;
 773
 774         if (count == 0)
 775                 return 0;
 776
 777         if (off == 0) {
 778                 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 779                 if (!mbox)
 780                         return -ENOMEM;
 781
 782         }
 783
 784         spin_lock_irq(host->host_lock);
 785
 786         if (off == 0) {
 787                 if (phba->sysfs_mbox.mbox)
 788                         mempool_free(mbox, phba->mbox_mem_pool);
 789                 else
 790                         phba->sysfs_mbox.mbox = mbox;
 791                 phba->sysfs_mbox.state = SMBOX_WRITING;
 792         } else {
 793                 if (phba->sysfs_mbox.state  != SMBOX_WRITING ||
 794                     phba->sysfs_mbox.offset != off           ||
 795                     phba->sysfs_mbox.mbox   == NULL ) {
 796                         sysfs_mbox_idle(phba);
 797                         spin_unlock_irq(host->host_lock);
 798                         return -EINVAL;
 799                 }
 800         }
 801
 802         memcpy((uint8_t *) & phba->sysfs_mbox.mbox->mb + off,
 803                buf, count);
 804
 805         phba->sysfs_mbox.offset = off + count;
 806
 807         spin_unlock_irq(host->host_lock);
 808
 809         return count;
 810 }
 811
 812 static ssize_t
 813 sysfs_mbox_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
 814 {
 815         struct Scsi_Host *host =
 816                 class_to_shost(container_of(kobj, struct class_device,
 817                                             kobj));
 818         struct lpfc_hba *phba = (struct lpfc_hba*)host->hostdata[0];
 819         int rc;
 820
 821         if (off > sizeof(MAILBOX_t))
 822                 return -ERANGE;
 823
 824         if ((count + off) > sizeof(MAILBOX_t))
 825                 count = sizeof(MAILBOX_t) - off;
 826
 827         if (off % 4 ||  count % 4 || (unsigned long)buf % 4)
 828                 return -EINVAL;
 829
 830         if (off && count == 0)
 831                 return 0;
 832
 833         spin_lock_irq(phba->host->host_lock);
 834
 835         if (off == 0 &&
 836             phba->sysfs_mbox.state  == SMBOX_WRITING &&
 837             phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) {
 838
 839                 switch (phba->sysfs_mbox.mbox->mb.mbxCommand) {
 840                         /* Offline only */
 841                 case MBX_WRITE_NV:
 842                 case MBX_INIT_LINK:
 843                 case MBX_DOWN_LINK:
 844                 case MBX_CONFIG_LINK:
 845                 case MBX_CONFIG_RING:
 846                 case MBX_RESET_RING:
 847                 case MBX_UNREG_LOGIN:
 848                 case MBX_CLEAR_LA:
 849                 case MBX_DUMP_CONTEXT:
 850                 case MBX_RUN_DIAGS:
 851                 case MBX_RESTART:
 852                 case MBX_FLASH_WR_ULA:
 853                 case MBX_SET_MASK:
 854                 case MBX_SET_SLIM:
 855                 case MBX_SET_DEBUG:
 856                         if (!(phba->fc_flag & FC_OFFLINE_MODE)) {
 857                                 printk(KERN_WARNING "mbox_read:Command 0x%x "
 858                                        "is illegal in on-line state\n",
 859                                        phba->sysfs_mbox.mbox->mb.mbxCommand);
 860                                 sysfs_mbox_idle(phba);
 861                                 spin_unlock_irq(phba->host->host_lock);
 862                                 return -EPERM;
 863                         }
 864                 case MBX_LOAD_SM:
 865                 case MBX_READ_NV:
 866                 case MBX_READ_CONFIG:
 867                 case MBX_READ_RCONFIG:
 868                 case MBX_READ_STATUS:
 869                 case MBX_READ_XRI:
 870                 case MBX_READ_REV:
 871                 case MBX_READ_LNK_STAT:
 872                 case MBX_DUMP_MEMORY:
 873                 case MBX_DOWN_LOAD:
 874                 case MBX_UPDATE_CFG:
 875                 case MBX_LOAD_AREA:
 876                 case MBX_LOAD_EXP_ROM:
 877                         break;
 878                 case MBX_READ_SPARM64:
 879                 case MBX_READ_LA:
 880                 case MBX_READ_LA64:
 881                 case MBX_REG_LOGIN:
 882                 case MBX_REG_LOGIN64:
 883                 case MBX_CONFIG_PORT:
 884                 case MBX_RUN_BIU_DIAG:
 885                         printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n",
 886                                phba->sysfs_mbox.mbox->mb.mbxCommand);
 887                         sysfs_mbox_idle(phba);
 888                         spin_unlock_irq(phba->host->host_lock);
 889                         return -EPERM;
 890                 default:
 891                         printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n",
 892                                phba->sysfs_mbox.mbox->mb.mbxCommand);
 893                         sysfs_mbox_idle(phba);
 894                         spin_unlock_irq(phba->host->host_lock);
 895                         return -EPERM;
 896                 }
 897
 898                 if ((phba->fc_flag & FC_OFFLINE_MODE) ||
 899                     (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE))){
 900
 901                         spin_unlock_irq(phba->host->host_lock);
 902                         rc = lpfc_sli_issue_mbox (phba,
 903                                                   phba->sysfs_mbox.mbox,
 904                                                   MBX_POLL);
 905                         spin_lock_irq(phba->host->host_lock);
 906
 907                 } else {
 908                         spin_unlock_irq(phba->host->host_lock);
 909                         rc = lpfc_sli_issue_mbox_wait (phba,
 910                                                        phba->sysfs_mbox.mbox,
 911                                                        phba->fc_ratov * 2);
 912                         spin_lock_irq(phba->host->host_lock);
 913                 }
 914
 915                 if (rc != MBX_SUCCESS) {
 916                         sysfs_mbox_idle(phba);
 917                         spin_unlock_irq(host->host_lock);
 918                         return -ENODEV;
 919                 }
 920                 phba->sysfs_mbox.state = SMBOX_READING;
 921         }
 922         else if (phba->sysfs_mbox.offset != off ||
 923                  phba->sysfs_mbox.state  != SMBOX_READING) {
 924                 printk(KERN_WARNING  "mbox_read: Bad State\n");
 925                 sysfs_mbox_idle(phba);
 926                 spin_unlock_irq(host->host_lock);
 927                 return -EINVAL;
 928         }
 929
 930         memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);
 931
 932         phba->sysfs_mbox.offset = off + count;
 933
 934         if (phba->sysfs_mbox.offset == sizeof(MAILBOX_t))
 935                 sysfs_mbox_idle(phba);
 936
 937         spin_unlock_irq(phba->host->host_lock);
 938
 939         return count;
 940 }
 941
 942 static struct bin_attribute sysfs_mbox_attr = {
 943         .attr = {
 944                 .name = "mbox",
 945                 .mode = S_IRUSR | S_IWUSR,
 946                 .owner = THIS_MODULE,
 947         },
 948         .size = sizeof(MAILBOX_t),
 949         .read = sysfs_mbox_read,
 950         .write = sysfs_mbox_write,
 951 };
 952
 953 int
 954 lpfc_alloc_sysfs_attr(struct lpfc_hba *phba)
 955 {
 956         struct Scsi_Host *host = phba->host;
 957         int error;
 958
 959         error = sysfs_create_bin_file(&host->shost_classdev.kobj,
 960                                                         &sysfs_ctlreg_attr);
 961         if (error)
 962                 goto out;
 963
 964         error = sysfs_create_bin_file(&host->shost_classdev.kobj,
 965                                                         &sysfs_mbox_attr);
 966         if (error)
 967                 goto out_remove_ctlreg_attr;
 968
 969         return 0;
 970 out_remove_ctlreg_attr:
 971         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_ctlreg_attr);
 972 out:
 973         return error;
 974 }
 975
 976 void
 977 lpfc_free_sysfs_attr(struct lpfc_hba *phba)
 978 {
 979         struct Scsi_Host *host = phba->host;
 980
 981         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_mbox_attr);
 982         sysfs_remove_bin_file(&host->shost_classdev.kobj, &sysfs_ctlreg_attr);
 983 }
 984
 985
 986 /*
 987  * Dynamic FC Host Attributes Support
 988  */
 989
 990 static void
 991 lpfc_get_host_port_id(struct Scsi_Host *shost)
 992 {
 993         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
 994         /* note: fc_myDID already in cpu endianness */
 995         fc_host_port_id(shost) = phba->fc_myDID;
 996 }
 997
 998 static void
 999 lpfc_get_host_port_type(struct Scsi_Host *shost)
1000 {
1001         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
1002
1003         spin_lock_irq(shost->host_lock);
1004
1005         if (phba->hba_state == LPFC_HBA_READY) {
1006                 if (phba->fc_topology == TOPOLOGY_LOOP) {
1007                         if (phba->fc_flag & FC_PUBLIC_LOOP)
1008                                 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
1009                         else
1010                                 fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
1011                 } else {
1012                         if (phba->fc_flag & FC_FABRIC)
1013                                 fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
1014                         else
1015                                 fc_host_port_type(shost) = FC_PORTTYPE_PTP;
1016                 }
1017         } else
1018                 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
1019
1020         spin_unlock_irq(shost->host_lock);
1021 }
1022
1023 static void
1024 lpfc_get_host_port_state(struct Scsi_Host *shost)
1025 {
1026         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
1027
1028         spin_lock_irq(shost->host_lock);
1029
1030         if (phba->fc_flag & FC_OFFLINE_MODE)
1031                 fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
1032         else {
1033                 switch (phba->hba_state) {
1034                 case LPFC_INIT_START:
1035                 case LPFC_INIT_MBX_CMDS:
1036                 case LPFC_LINK_DOWN:
1037                         fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
1038                         break;
1039                 case LPFC_LINK_UP:
1040                 case LPFC_LOCAL_CFG_LINK:
1041                 case LPFC_FLOGI:
1042                 case LPFC_FABRIC_CFG_LINK:
1043                 case LPFC_NS_REG:
1044                 case LPFC_NS_QRY:
1045                 case LPFC_BUILD_DISC_LIST:
1046                 case LPFC_DISC_AUTH:
1047                 case LPFC_CLEAR_LA:
1048                 case LPFC_HBA_READY:
1049                         /* Links up, beyond this port_type reports state */
1050                         fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
1051                         break;
1052                 case LPFC_HBA_ERROR:
1053                         fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
1054                         break;
1055                 default:
1056                         fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
1057                         break;
1058                 }
1059         }
1060
1061         spin_unlock_irq(shost->host_lock);
1062 }
1063
1064 static void
1065 lpfc_get_host_speed(struct Scsi_Host *shost)
1066 {
1067         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
1068
1069         spin_lock_irq(shost->host_lock);
1070
1071         if (phba->hba_state == LPFC_HBA_READY) {
1072                 switch(phba->fc_linkspeed) {
1073                         case LA_1GHZ_LINK:
1074                                 fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
1075                         break;
1076                         case LA_2GHZ_LINK:
1077                                 fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
1078                         break;
1079                         case LA_4GHZ_LINK:
1080                                 fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
1081                         break;
1082                         default:
1083                                 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
1084                         break;
1085                 }
1086         }
1087
1088         spin_unlock_irq(shost->host_lock);
1089 }
1090
1091 static void
1092 lpfc_get_host_fabric_name (struct Scsi_Host *shost)
1093 {
1094         struct lpfc_hba *phba = (struct lpfc_hba*)shost->hostdata[0];
1095         u64 node_name;
1096
1097         spin_lock_irq(shost->host_lock);
1098
1099         if ((phba->fc_flag & FC_FABRIC) ||
1100             ((phba->fc_topology == TOPOLOGY_LOOP) &&
1101              (phba->fc_flag & FC_PUBLIC_LOOP)))
1102                 node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
1103         else
1104                 /* fabric is local port if there is no F/FL_Port */
1105                 node_name = wwn_to_u64(phba->fc_nodename.u.wwn);
1106
1107         spin_unlock_irq(shost->host_lock);
1108
1109         fc_host_fabric_name(shost) = node_name;
1110 }
1111
1112
1113 static struct fc_host_statistics *
1114 lpfc_get_stats(struct Scsi_Host *shost)
1115 {
1116         struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0];
1117         struct lpfc_sli *psli = &phba->sli;
1118         struct fc_host_statistics *hs = &phba->link_stats;
1119         LPFC_MBOXQ_t *pmboxq;
1120         MAILBOX_t *pmb;
1121         int rc = 0;
1122
1123         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1124         if (!pmboxq)
1125                 return NULL;
1126         memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1127
1128         pmb = &pmboxq->mb;
1129         pmb->mbxCommand = MBX_READ_STATUS;
1130         pmb->mbxOwner = OWN_HOST;
1131         pmboxq->context1 = NULL;
1132
1133         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1134                 (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1135                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1136         else
1137                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1138
1139         if (rc != MBX_SUCCESS) {
1140                 if (rc == MBX_TIMEOUT)
1141                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1142                 else
1143                         mempool_free(pmboxq, phba->mbox_mem_pool);
1144                 return NULL;
1145         }
1146
1147         memset(hs, 0, sizeof (struct fc_host_statistics));
1148
1149         hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
1150         hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256);
1151         hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
1152         hs->rx_words = (pmb->un.varRdStatus.rcvByteCnt * 256);
1153
1154         memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
1155         pmb->mbxCommand = MBX_READ_LNK_STAT;
1156         pmb->mbxOwner = OWN_HOST;
1157         pmboxq->context1 = NULL;
1158
1159         if ((phba->fc_flag & FC_OFFLINE_MODE) ||
1160             (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
1161                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
1162         else
1163                 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);
1164
1165         if (rc != MBX_SUCCESS) {
1166                 if (rc == MBX_TIMEOUT)
1167                         pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1168                 else
1169                         mempool_free( pmboxq, phba->mbox_mem_pool);
1170                 return NULL;
1171         }
1172
1173         hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
1174         hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
1175         hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
1176         hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
1177         hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
1178         hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
1179         hs->error_frames = pmb->un.varRdLnk.crcCnt;
1180
1181         if (phba->fc_topology == TOPOLOGY_LOOP) {
1182                 hs->lip_count = (phba->fc_eventTag >> 1);
1183                 hs->nos_count = -1;
1184         } else {
1185                 hs->lip_count = -1;
1186                 hs->nos_count = (phba->fc_eventTag >> 1);
1187         }
1188
1189         hs->dumped_frames = -1;
1190
1191 /* FIX ME */
1192         /*hs->SecondsSinceLastReset = (jiffies - lpfc_loadtime) / HZ;*/
1193
1194         return hs;
1195 }
1196
1197
1198 /*
1199  * The LPFC driver treats linkdown handling as target loss events so there
1200  * are no sysfs handlers for link_down_tmo.
1201  */
1202 static void
1203 lpfc_get_starget_port_id(struct scsi_target *starget)
1204 {
1205         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1206         struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata[0];
1207         uint32_t did = -1;
1208         struct lpfc_nodelist *ndlp = NULL;
1209
1210         spin_lock_irq(shost->host_lock);
1211         /* Search the mapped list for this target ID */
1212         list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
1213                 if (starget->id == ndlp->nlp_sid) {
1214                         did = ndlp->nlp_DID;
1215                         break;
1216                 }
1217         }
1218         spin_unlock_irq(shost->host_lock);
1219
1220         fc_starget_port_id(starget) = did;
1221 }
1222
1223 static void
1224 lpfc_get_starget_node_name(struct scsi_target *starget)
1225 {
1226         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1227         struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata[0];
1228         u64 node_name = 0;
1229         struct lpfc_nodelist *ndlp = NULL;
1230
1231         spin_lock_irq(shost->host_lock);
1232         /* Search the mapped list for this target ID */
1233         list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
1234                 if (starget->id == ndlp->nlp_sid) {
1235                         node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn);
1236                         break;
1237                 }
1238         }
1239         spin_unlock_irq(shost->host_lock);
1240
1241         fc_starget_node_name(starget) = node_name;
1242 }
1243
1244 static void
1245 lpfc_get_starget_port_name(struct scsi_target *starget)
1246 {
1247         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
1248         struct lpfc_hba *phba = (struct lpfc_hba *) shost->hostdata[0];
1249         u64 port_name = 0;
1250         struct lpfc_nodelist *ndlp = NULL;
1251
1252         spin_lock_irq(shost->host_lock);
1253         /* Search the mapped list for this target ID */
1254         list_for_each_entry(ndlp, &phba->fc_nlpmap_list, nlp_listp) {
1255                 if (starget->id == ndlp->nlp_sid) {
1256                         port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn);
1257                         break;
1258                 }
1259         }
1260         spin_unlock_irq(shost->host_lock);
1261
1262         fc_starget_port_name(starget) = port_name;
1263 }
1264
1265 static void
1266 lpfc_get_rport_loss_tmo(struct fc_rport *rport)
1267 {
1268         /*
1269          * Return the driver's global value for device loss timeout plus
1270          * five seconds to allow the driver's nodev timer to run.
1271          */
1272         rport->dev_loss_tmo = lpfc_nodev_tmo + 5;
1273 }
1274
1275 static void
1276 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
1277 {
1278         /*
1279          * The driver doesn't have a per-target timeout setting.  Set
1280          * this value globally. lpfc_nodev_tmo should be greater then 0.
1281          */
1282         if (timeout)
1283                 lpfc_nodev_tmo = timeout;
1284         else
1285                 lpfc_nodev_tmo = 1;
1286         rport->dev_loss_tmo = lpfc_nodev_tmo + 5;
1287 }
1288
1289
1290 #define lpfc_rport_show_function(field, format_string, sz, cast)        \
1291 static ssize_t                                                          \
1292 lpfc_show_rport_##field (struct class_device *cdev, char *buf)          \
1293 {                                                                       \
1294         struct fc_rport *rport = transport_class_to_rport(cdev);        \
1295         struct lpfc_rport_data *rdata = rport->hostdata;                \
1296         return snprintf(buf, sz, format_string,                         \
1297                 (rdata->target) ? cast rdata->target->field : 0);       \
1298 }
1299
1300 #define lpfc_rport_rd_attr(field, format_string, sz)                    \
1301         lpfc_rport_show_function(field, format_string, sz, )            \
1302 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL)
1303
1304
1305 struct fc_function_template lpfc_transport_functions = {
1306         /* fixed attributes the driver supports */
1307         .show_host_node_name = 1,
1308         .show_host_port_name = 1,
1309         .show_host_supported_classes = 1,
1310         .show_host_supported_fc4s = 1,
1311         .show_host_symbolic_name = 1,
1312         .show_host_supported_speeds = 1,
1313         .show_host_maxframe_size = 1,
1314
1315         /* dynamic attributes the driver supports */
1316         .get_host_port_id = lpfc_get_host_port_id,
1317         .show_host_port_id = 1,
1318
1319         .get_host_port_type = lpfc_get_host_port_type,
1320         .show_host_port_type = 1,
1321
1322         .get_host_port_state = lpfc_get_host_port_state,
1323         .show_host_port_state = 1,
1324
1325         /* active_fc4s is shown but doesn't change (thus no get function) */
1326         .show_host_active_fc4s = 1,
1327
1328         .get_host_speed = lpfc_get_host_speed,
1329         .show_host_speed = 1,
1330
1331         .get_host_fabric_name = lpfc_get_host_fabric_name,
1332         .show_host_fabric_name = 1,
1333
1334         /*
1335          * The LPFC driver treats linkdown handling as target loss events
1336          * so there are no sysfs handlers for link_down_tmo.
1337          */
1338
1339         .get_fc_host_stats = lpfc_get_stats,
1340
1341         /* the LPFC driver doesn't support resetting stats yet */
1342
1343         .dd_fcrport_size = sizeof(struct lpfc_rport_data),
1344         .show_rport_maxframe_size = 1,
1345         .show_rport_supported_classes = 1,
1346
1347         .get_rport_dev_loss_tmo = lpfc_get_rport_loss_tmo,
1348         .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo,
1349         .show_rport_dev_loss_tmo = 1,
1350
1351         .get_starget_port_id  = lpfc_get_starget_port_id,
1352         .show_starget_port_id = 1,
1353
1354         .get_starget_node_name = lpfc_get_starget_node_name,
1355         .show_starget_node_name = 1,
1356
1357         .get_starget_port_name = lpfc_get_starget_port_name,
1358         .show_starget_port_name = 1,
1359
1360         .issue_fc_host_lip = lpfc_issue_lip,
1361 };
1362
1363 void
1364 lpfc_get_cfgparam(struct lpfc_hba *phba)
1365 {
1366         lpfc_log_verbose_init(phba, lpfc_log_verbose);
1367         lpfc_cr_delay_init(phba, lpfc_cr_delay);
1368         lpfc_cr_count_init(phba, lpfc_cr_count);
1369         lpfc_lun_queue_depth_init(phba, lpfc_lun_queue_depth);
1370         lpfc_fcp_class_init(phba, lpfc_fcp_class);
1371         lpfc_use_adisc_init(phba, lpfc_use_adisc);
1372         lpfc_ack0_init(phba, lpfc_ack0);
1373         lpfc_topology_init(phba, lpfc_topology);
1374         lpfc_scan_down_init(phba, lpfc_scan_down);
1375         lpfc_nodev_tmo_init(phba, lpfc_nodev_tmo);
1376         lpfc_link_speed_init(phba, lpfc_link_speed);
1377         lpfc_fdmi_on_init(phba, lpfc_fdmi_on);
1378         lpfc_discovery_threads_init(phba, lpfc_discovery_threads);
1379         lpfc_max_luns_init(phba, lpfc_max_luns);
1380         lpfc_poll_tmo_init(phba, lpfc_poll_tmo);
1381
1382         phba->cfg_poll = lpfc_poll;
1383
1384         /*
1385          * The total number of segments is the configuration value plus 2
1386          * since the IOCB need a command and response bde.
1387          */
1388         phba->cfg_sg_seg_cnt = LPFC_SG_SEG_CNT + 2;
1389
1390         /*
1391          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
1392          * used to create the sg_dma_buf_pool must be dynamically calculated
1393          */
1394         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
1395                         sizeof(struct fcp_rsp) +
1396                         (phba->cfg_sg_seg_cnt * sizeof(struct ulp_bde64));
1397
1398         switch (phba->pcidev->device) {
1399         case PCI_DEVICE_ID_LP101:
1400         case PCI_DEVICE_ID_BSMB:
1401         case PCI_DEVICE_ID_ZSMB:
1402                 phba->cfg_hba_queue_depth = LPFC_LP101_HBA_Q_DEPTH;
1403                 break;
1404         case PCI_DEVICE_ID_RFLY:
1405         case PCI_DEVICE_ID_PFLY:
1406         case PCI_DEVICE_ID_BMID:
1407         case PCI_DEVICE_ID_ZMID:
1408         case PCI_DEVICE_ID_TFLY:
1409                 phba->cfg_hba_queue_depth = LPFC_LC_HBA_Q_DEPTH;
1410                 break;
1411         default:
1412                 phba->cfg_hba_queue_depth = LPFC_DFT_HBA_Q_DEPTH;
1413         }
1414         return;
1415 }