1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2011 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 #include <linux/aer.h> 27 #include <linux/gfp.h> 28 #include <linux/kernel.h> 29 30 #include <scsi/scsi.h> 31 #include <scsi/scsi_device.h> 32 #include <scsi/scsi_host.h> 33 #include <scsi/scsi_tcq.h> 34 #include <scsi/scsi_transport_fc.h> 35 #include <scsi/fc/fc_fs.h> 36 37 #include "lpfc_hw4.h" 38 #include "lpfc_hw.h" 39 #include "lpfc_sli.h" 40 #include "lpfc_sli4.h" 41 #include "lpfc_nl.h" 42 #include "lpfc_disc.h" 43 #include "lpfc_scsi.h" 44 #include "lpfc.h" 45 #include "lpfc_logmsg.h" 46 #include "lpfc_version.h" 47 #include "lpfc_compat.h" 48 #include "lpfc_crtn.h" 49 #include "lpfc_vport.h" 50 51 #define LPFC_DEF_DEVLOSS_TMO 30 52 #define LPFC_MIN_DEVLOSS_TMO 1 53 #define LPFC_MAX_DEVLOSS_TMO 255 54 55 /** 56 * lpfc_jedec_to_ascii - Hex to ascii convertor according to JEDEC rules 57 * @incr: integer to convert. 58 * @hdw: ascii string holding converted integer plus a string terminator. 59 * 60 * Description: 61 * JEDEC Joint Electron Device Engineering Council. 62 * Convert a 32 bit integer composed of 8 nibbles into an 8 byte ascii 63 * character string. The string is then terminated with a NULL in byte 9. 64 * Hex 0-9 becomes ascii '0' to '9'. 65 * Hex a-f becomes ascii '=' to 'B' capital B. 66 * 67 * Notes: 68 * Coded for 32 bit integers only. 69 **/ 70 static void 71 lpfc_jedec_to_ascii(int incr, char hdw[]) 72 { 73 int i, j; 74 for (i = 0; i < 8; i++) { 75 j = (incr & 0xf); 76 if (j <= 9) 77 hdw[7 - i] = 0x30 + j; 78 else 79 hdw[7 - i] = 0x61 + j - 10; 80 incr = (incr >> 4); 81 } 82 hdw[8] = 0; 83 return; 84 } 85 86 /** 87 * lpfc_drvr_version_show - Return the Emulex driver string with version number 88 * @dev: class unused variable. 89 * @attr: device attribute, not used. 90 * @buf: on return contains the module description text. 91 * 92 * Returns: size of formatted string. 93 **/ 94 static ssize_t 95 lpfc_drvr_version_show(struct device *dev, struct device_attribute *attr, 96 char *buf) 97 { 98 return snprintf(buf, PAGE_SIZE, LPFC_MODULE_DESC "\n"); 99 } 100 101 /** 102 * lpfc_enable_fip_show - Return the fip mode of the HBA 103 * @dev: class unused variable. 104 * @attr: device attribute, not used. 105 * @buf: on return contains the module description text. 106 * 107 * Returns: size of formatted string. 108 **/ 109 static ssize_t 110 lpfc_enable_fip_show(struct device *dev, struct device_attribute *attr, 111 char *buf) 112 { 113 struct Scsi_Host *shost = class_to_shost(dev); 114 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 115 struct lpfc_hba *phba = vport->phba; 116 117 if (phba->hba_flag & HBA_FIP_SUPPORT) 118 return snprintf(buf, PAGE_SIZE, "1\n"); 119 else 120 return snprintf(buf, PAGE_SIZE, "0\n"); 121 } 122 123 static ssize_t 124 lpfc_bg_info_show(struct device *dev, struct device_attribute *attr, 125 char *buf) 126 { 127 struct Scsi_Host *shost = class_to_shost(dev); 128 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 129 struct lpfc_hba *phba = vport->phba; 130 131 if (phba->cfg_enable_bg) 132 if (phba->sli3_options & LPFC_SLI3_BG_ENABLED) 133 return snprintf(buf, PAGE_SIZE, "BlockGuard Enabled\n"); 134 else 135 return snprintf(buf, PAGE_SIZE, 136 "BlockGuard Not Supported\n"); 137 else 138 return snprintf(buf, PAGE_SIZE, 139 "BlockGuard Disabled\n"); 140 } 141 142 static ssize_t 143 lpfc_bg_guard_err_show(struct device *dev, struct device_attribute *attr, 144 char *buf) 145 { 146 struct Scsi_Host *shost = class_to_shost(dev); 147 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 148 struct lpfc_hba *phba = vport->phba; 149 150 return snprintf(buf, PAGE_SIZE, "%llu\n", 151 (unsigned long long)phba->bg_guard_err_cnt); 152 } 153 154 static ssize_t 155 lpfc_bg_apptag_err_show(struct device *dev, struct device_attribute *attr, 156 char *buf) 157 { 158 struct Scsi_Host *shost = class_to_shost(dev); 159 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 160 struct lpfc_hba *phba = vport->phba; 161 162 return snprintf(buf, PAGE_SIZE, "%llu\n", 163 (unsigned long long)phba->bg_apptag_err_cnt); 164 } 165 166 static ssize_t 167 lpfc_bg_reftag_err_show(struct device *dev, struct device_attribute *attr, 168 char *buf) 169 { 170 struct Scsi_Host *shost = class_to_shost(dev); 171 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 172 struct lpfc_hba *phba = vport->phba; 173 174 return snprintf(buf, PAGE_SIZE, "%llu\n", 175 (unsigned long long)phba->bg_reftag_err_cnt); 176 } 177 178 /** 179 * lpfc_info_show - Return some pci info about the host in ascii 180 * @dev: class converted to a Scsi_host structure. 181 * @attr: device attribute, not used. 182 * @buf: on return contains the formatted text from lpfc_info(). 183 * 184 * Returns: size of formatted string. 185 **/ 186 static ssize_t 187 lpfc_info_show(struct device *dev, struct device_attribute *attr, 188 char *buf) 189 { 190 struct Scsi_Host *host = class_to_shost(dev); 191 192 return snprintf(buf, PAGE_SIZE, "%s\n",lpfc_info(host)); 193 } 194 195 /** 196 * lpfc_serialnum_show - Return the hba serial number in ascii 197 * @dev: class converted to a Scsi_host structure. 198 * @attr: device attribute, not used. 199 * @buf: on return contains the formatted text serial number. 200 * 201 * Returns: size of formatted string. 202 **/ 203 static ssize_t 204 lpfc_serialnum_show(struct device *dev, struct device_attribute *attr, 205 char *buf) 206 { 207 struct Scsi_Host *shost = class_to_shost(dev); 208 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 209 struct lpfc_hba *phba = vport->phba; 210 211 return snprintf(buf, PAGE_SIZE, "%s\n",phba->SerialNumber); 212 } 213 214 /** 215 * lpfc_temp_sensor_show - Return the temperature sensor level 216 * @dev: class converted to a Scsi_host structure. 217 * @attr: device attribute, not used. 218 * @buf: on return contains the formatted support level. 219 * 220 * Description: 221 * Returns a number indicating the temperature sensor level currently 222 * supported, zero or one in ascii. 223 * 224 * Returns: size of formatted string. 225 **/ 226 static ssize_t 227 lpfc_temp_sensor_show(struct device *dev, struct device_attribute *attr, 228 char *buf) 229 { 230 struct Scsi_Host *shost = class_to_shost(dev); 231 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 232 struct lpfc_hba *phba = vport->phba; 233 return snprintf(buf, PAGE_SIZE, "%d\n",phba->temp_sensor_support); 234 } 235 236 /** 237 * lpfc_modeldesc_show - Return the model description of the hba 238 * @dev: class converted to a Scsi_host structure. 239 * @attr: device attribute, not used. 240 * @buf: on return contains the scsi vpd model description. 241 * 242 * Returns: size of formatted string. 243 **/ 244 static ssize_t 245 lpfc_modeldesc_show(struct device *dev, struct device_attribute *attr, 246 char *buf) 247 { 248 struct Scsi_Host *shost = class_to_shost(dev); 249 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 250 struct lpfc_hba *phba = vport->phba; 251 252 return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelDesc); 253 } 254 255 /** 256 * lpfc_modelname_show - Return the model name of the hba 257 * @dev: class converted to a Scsi_host structure. 258 * @attr: device attribute, not used. 259 * @buf: on return contains the scsi vpd model name. 260 * 261 * Returns: size of formatted string. 262 **/ 263 static ssize_t 264 lpfc_modelname_show(struct device *dev, struct device_attribute *attr, 265 char *buf) 266 { 267 struct Scsi_Host *shost = class_to_shost(dev); 268 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 269 struct lpfc_hba *phba = vport->phba; 270 271 return snprintf(buf, PAGE_SIZE, "%s\n",phba->ModelName); 272 } 273 274 /** 275 * lpfc_programtype_show - Return the program type of the hba 276 * @dev: class converted to a Scsi_host structure. 277 * @attr: device attribute, not used. 278 * @buf: on return contains the scsi vpd program type. 279 * 280 * Returns: size of formatted string. 281 **/ 282 static ssize_t 283 lpfc_programtype_show(struct device *dev, struct device_attribute *attr, 284 char *buf) 285 { 286 struct Scsi_Host *shost = class_to_shost(dev); 287 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 288 struct lpfc_hba *phba = vport->phba; 289 290 return snprintf(buf, PAGE_SIZE, "%s\n",phba->ProgramType); 291 } 292 293 /** 294 * lpfc_mlomgmt_show - Return the Menlo Maintenance sli flag 295 * @dev: class converted to a Scsi_host structure. 296 * @attr: device attribute, not used. 297 * @buf: on return contains the Menlo Maintenance sli flag. 298 * 299 * Returns: size of formatted string. 300 **/ 301 static ssize_t 302 lpfc_mlomgmt_show(struct device *dev, struct device_attribute *attr, char *buf) 303 { 304 struct Scsi_Host *shost = class_to_shost(dev); 305 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata; 306 struct lpfc_hba *phba = vport->phba; 307 308 return snprintf(buf, PAGE_SIZE, "%d\n", 309 (phba->sli.sli_flag & LPFC_MENLO_MAINT)); 310 } 311 312 /** 313 * lpfc_vportnum_show - Return the port number in ascii of the hba 314 * @dev: class converted to a Scsi_host structure. 315 * @attr: device attribute, not used. 316 * @buf: on return contains scsi vpd program type. 317 * 318 * Returns: size of formatted string. 319 **/ 320 static ssize_t 321 lpfc_vportnum_show(struct device *dev, struct device_attribute *attr, 322 char *buf) 323 { 324 struct Scsi_Host *shost = class_to_shost(dev); 325 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 326 struct lpfc_hba *phba = vport->phba; 327 328 return snprintf(buf, PAGE_SIZE, "%s\n",phba->Port); 329 } 330 331 /** 332 * lpfc_fwrev_show - Return the firmware rev running in the hba 333 * @dev: class converted to a Scsi_host structure. 334 * @attr: device attribute, not used. 335 * @buf: on return contains the scsi vpd program type. 336 * 337 * Returns: size of formatted string. 338 **/ 339 static ssize_t 340 lpfc_fwrev_show(struct device *dev, struct device_attribute *attr, 341 char *buf) 342 { 343 struct Scsi_Host *shost = class_to_shost(dev); 344 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 345 struct lpfc_hba *phba = vport->phba; 346 char fwrev[32]; 347 348 lpfc_decode_firmware_rev(phba, fwrev, 1); 349 return snprintf(buf, PAGE_SIZE, "%s, sli-%d\n", fwrev, phba->sli_rev); 350 } 351 352 /** 353 * lpfc_hdw_show - Return the jedec information about the hba 354 * @dev: class converted to a Scsi_host structure. 355 * @attr: device attribute, not used. 356 * @buf: on return contains the scsi vpd program type. 357 * 358 * Returns: size of formatted string. 359 **/ 360 static ssize_t 361 lpfc_hdw_show(struct device *dev, struct device_attribute *attr, char *buf) 362 { 363 char hdw[9]; 364 struct Scsi_Host *shost = class_to_shost(dev); 365 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 366 struct lpfc_hba *phba = vport->phba; 367 lpfc_vpd_t *vp = &phba->vpd; 368 369 lpfc_jedec_to_ascii(vp->rev.biuRev, hdw); 370 return snprintf(buf, PAGE_SIZE, "%s\n", hdw); 371 } 372 373 /** 374 * lpfc_option_rom_version_show - Return the adapter ROM FCode version 375 * @dev: class converted to a Scsi_host structure. 376 * @attr: device attribute, not used. 377 * @buf: on return contains the ROM and FCode ascii strings. 378 * 379 * Returns: size of formatted string. 380 **/ 381 static ssize_t 382 lpfc_option_rom_version_show(struct device *dev, struct device_attribute *attr, 383 char *buf) 384 { 385 struct Scsi_Host *shost = class_to_shost(dev); 386 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 387 struct lpfc_hba *phba = vport->phba; 388 389 return snprintf(buf, PAGE_SIZE, "%s\n", phba->OptionROMVersion); 390 } 391 392 /** 393 * lpfc_state_show - Return the link state of the port 394 * @dev: class converted to a Scsi_host structure. 395 * @attr: device attribute, not used. 396 * @buf: on return contains text describing the state of the link. 397 * 398 * Notes: 399 * The switch statement has no default so zero will be returned. 400 * 401 * Returns: size of formatted string. 402 **/ 403 static ssize_t 404 lpfc_link_state_show(struct device *dev, struct device_attribute *attr, 405 char *buf) 406 { 407 struct Scsi_Host *shost = class_to_shost(dev); 408 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 409 struct lpfc_hba *phba = vport->phba; 410 int len = 0; 411 412 switch (phba->link_state) { 413 case LPFC_LINK_UNKNOWN: 414 case LPFC_WARM_START: 415 case LPFC_INIT_START: 416 case LPFC_INIT_MBX_CMDS: 417 case LPFC_LINK_DOWN: 418 case LPFC_HBA_ERROR: 419 if (phba->hba_flag & LINK_DISABLED) 420 len += snprintf(buf + len, PAGE_SIZE-len, 421 "Link Down - User disabled\n"); 422 else 423 len += snprintf(buf + len, PAGE_SIZE-len, 424 "Link Down\n"); 425 break; 426 case LPFC_LINK_UP: 427 case LPFC_CLEAR_LA: 428 case LPFC_HBA_READY: 429 len += snprintf(buf + len, PAGE_SIZE-len, "Link Up - "); 430 431 switch (vport->port_state) { 432 case LPFC_LOCAL_CFG_LINK: 433 len += snprintf(buf + len, PAGE_SIZE-len, 434 "Configuring Link\n"); 435 break; 436 case LPFC_FDISC: 437 case LPFC_FLOGI: 438 case LPFC_FABRIC_CFG_LINK: 439 case LPFC_NS_REG: 440 case LPFC_NS_QRY: 441 case LPFC_BUILD_DISC_LIST: 442 case LPFC_DISC_AUTH: 443 len += snprintf(buf + len, PAGE_SIZE - len, 444 "Discovery\n"); 445 break; 446 case LPFC_VPORT_READY: 447 len += snprintf(buf + len, PAGE_SIZE - len, "Ready\n"); 448 break; 449 450 case LPFC_VPORT_FAILED: 451 len += snprintf(buf + len, PAGE_SIZE - len, "Failed\n"); 452 break; 453 454 case LPFC_VPORT_UNKNOWN: 455 len += snprintf(buf + len, PAGE_SIZE - len, 456 "Unknown\n"); 457 break; 458 } 459 if (phba->sli.sli_flag & LPFC_MENLO_MAINT) 460 len += snprintf(buf + len, PAGE_SIZE-len, 461 " Menlo Maint Mode\n"); 462 else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 463 if (vport->fc_flag & FC_PUBLIC_LOOP) 464 len += snprintf(buf + len, PAGE_SIZE-len, 465 " Public Loop\n"); 466 else 467 len += snprintf(buf + len, PAGE_SIZE-len, 468 " Private Loop\n"); 469 } else { 470 if (vport->fc_flag & FC_FABRIC) 471 len += snprintf(buf + len, PAGE_SIZE-len, 472 " Fabric\n"); 473 else 474 len += snprintf(buf + len, PAGE_SIZE-len, 475 " Point-2-Point\n"); 476 } 477 } 478 479 return len; 480 } 481 482 /** 483 * lpfc_link_state_store - Transition the link_state on an HBA port 484 * @dev: class device that is converted into a Scsi_host. 485 * @attr: device attribute, not used. 486 * @buf: one or more lpfc_polling_flags values. 487 * @count: not used. 488 * 489 * Returns: 490 * -EINVAL if the buffer is not "up" or "down" 491 * return from link state change function if non-zero 492 * length of the buf on success 493 **/ 494 static ssize_t 495 lpfc_link_state_store(struct device *dev, struct device_attribute *attr, 496 const char *buf, size_t count) 497 { 498 struct Scsi_Host *shost = class_to_shost(dev); 499 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 500 struct lpfc_hba *phba = vport->phba; 501 502 int status = -EINVAL; 503 504 if ((strncmp(buf, "up", sizeof("up") - 1) == 0) && 505 (phba->link_state == LPFC_LINK_DOWN)) 506 status = phba->lpfc_hba_init_link(phba, MBX_NOWAIT); 507 else if ((strncmp(buf, "down", sizeof("down") - 1) == 0) && 508 (phba->link_state >= LPFC_LINK_UP)) 509 status = phba->lpfc_hba_down_link(phba, MBX_NOWAIT); 510 511 if (status == 0) 512 return strlen(buf); 513 else 514 return status; 515 } 516 517 /** 518 * lpfc_num_discovered_ports_show - Return sum of mapped and unmapped vports 519 * @dev: class device that is converted into a Scsi_host. 520 * @attr: device attribute, not used. 521 * @buf: on return contains the sum of fc mapped and unmapped. 522 * 523 * Description: 524 * Returns the ascii text number of the sum of the fc mapped and unmapped 525 * vport counts. 526 * 527 * Returns: size of formatted string. 528 **/ 529 static ssize_t 530 lpfc_num_discovered_ports_show(struct device *dev, 531 struct device_attribute *attr, char *buf) 532 { 533 struct Scsi_Host *shost = class_to_shost(dev); 534 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 535 536 return snprintf(buf, PAGE_SIZE, "%d\n", 537 vport->fc_map_cnt + vport->fc_unmap_cnt); 538 } 539 540 /** 541 * lpfc_issue_lip - Misnomer, name carried over from long ago 542 * @shost: Scsi_Host pointer. 543 * 544 * Description: 545 * Bring the link down gracefully then re-init the link. The firmware will 546 * re-init the fiber channel interface as required. Does not issue a LIP. 547 * 548 * Returns: 549 * -EPERM port offline or management commands are being blocked 550 * -ENOMEM cannot allocate memory for the mailbox command 551 * -EIO error sending the mailbox command 552 * zero for success 553 **/ 554 static int 555 lpfc_issue_lip(struct Scsi_Host *shost) 556 { 557 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 558 struct lpfc_hba *phba = vport->phba; 559 LPFC_MBOXQ_t *pmboxq; 560 int mbxstatus = MBXERR_ERROR; 561 562 if ((vport->fc_flag & FC_OFFLINE_MODE) || 563 (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)) 564 return -EPERM; 565 566 pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL); 567 568 if (!pmboxq) 569 return -ENOMEM; 570 571 memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t)); 572 pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK; 573 pmboxq->u.mb.mbxOwner = OWN_HOST; 574 575 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO * 2); 576 577 if ((mbxstatus == MBX_SUCCESS) && 578 (pmboxq->u.mb.mbxStatus == 0 || 579 pmboxq->u.mb.mbxStatus == MBXERR_LINK_DOWN)) { 580 memset((void *)pmboxq, 0, sizeof (LPFC_MBOXQ_t)); 581 lpfc_init_link(phba, pmboxq, phba->cfg_topology, 582 phba->cfg_link_speed); 583 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, 584 phba->fc_ratov * 2); 585 if ((mbxstatus == MBX_SUCCESS) && 586 (pmboxq->u.mb.mbxStatus == MBXERR_SEC_NO_PERMISSION)) 587 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, 588 "2859 SLI authentication is required " 589 "for INIT_LINK but has not done yet\n"); 590 } 591 592 lpfc_set_loopback_flag(phba); 593 if (mbxstatus != MBX_TIMEOUT) 594 mempool_free(pmboxq, phba->mbox_mem_pool); 595 596 if (mbxstatus == MBXERR_ERROR) 597 return -EIO; 598 599 return 0; 600 } 601 602 /** 603 * lpfc_do_offline - Issues a mailbox command to bring the link down 604 * @phba: lpfc_hba pointer. 605 * @type: LPFC_EVT_OFFLINE, LPFC_EVT_WARM_START, LPFC_EVT_KILL. 606 * 607 * Notes: 608 * Assumes any error from lpfc_do_offline() will be negative. 609 * Can wait up to 5 seconds for the port ring buffers count 610 * to reach zero, prints a warning if it is not zero and continues. 611 * lpfc_workq_post_event() returns a non-zero return code if call fails. 612 * 613 * Returns: 614 * -EIO error posting the event 615 * zero for success 616 **/ 617 static int 618 lpfc_do_offline(struct lpfc_hba *phba, uint32_t type) 619 { 620 struct completion online_compl; 621 struct lpfc_sli_ring *pring; 622 struct lpfc_sli *psli; 623 int status = 0; 624 int cnt = 0; 625 int i; 626 int rc; 627 628 init_completion(&online_compl); 629 rc = lpfc_workq_post_event(phba, &status, &online_compl, 630 LPFC_EVT_OFFLINE_PREP); 631 if (rc == 0) 632 return -ENOMEM; 633 634 wait_for_completion(&online_compl); 635 636 if (status != 0) 637 return -EIO; 638 639 psli = &phba->sli; 640 641 /* Wait a little for things to settle down, but not 642 * long enough for dev loss timeout to expire. 643 */ 644 for (i = 0; i < psli->num_rings; i++) { 645 pring = &psli->ring[i]; 646 while (pring->txcmplq_cnt) { 647 msleep(10); 648 if (cnt++ > 500) { /* 5 secs */ 649 lpfc_printf_log(phba, 650 KERN_WARNING, LOG_INIT, 651 "0466 Outstanding IO when " 652 "bringing Adapter offline\n"); 653 break; 654 } 655 } 656 } 657 658 init_completion(&online_compl); 659 rc = lpfc_workq_post_event(phba, &status, &online_compl, type); 660 if (rc == 0) 661 return -ENOMEM; 662 663 wait_for_completion(&online_compl); 664 665 if (status != 0) 666 return -EIO; 667 668 return 0; 669 } 670 671 /** 672 * lpfc_selective_reset - Offline then onlines the port 673 * @phba: lpfc_hba pointer. 674 * 675 * Description: 676 * If the port is configured to allow a reset then the hba is brought 677 * offline then online. 678 * 679 * Notes: 680 * Assumes any error from lpfc_do_offline() will be negative. 681 * Do not make this function static. 682 * 683 * Returns: 684 * lpfc_do_offline() return code if not zero 685 * -EIO reset not configured or error posting the event 686 * zero for success 687 **/ 688 int 689 lpfc_selective_reset(struct lpfc_hba *phba) 690 { 691 struct completion online_compl; 692 int status = 0; 693 int rc; 694 695 if (!phba->cfg_enable_hba_reset) 696 return -EIO; 697 698 status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); 699 700 if (status != 0) 701 return status; 702 703 init_completion(&online_compl); 704 rc = lpfc_workq_post_event(phba, &status, &online_compl, 705 LPFC_EVT_ONLINE); 706 if (rc == 0) 707 return -ENOMEM; 708 709 wait_for_completion(&online_compl); 710 711 if (status != 0) 712 return -EIO; 713 714 return 0; 715 } 716 717 /** 718 * lpfc_issue_reset - Selectively resets an adapter 719 * @dev: class device that is converted into a Scsi_host. 720 * @attr: device attribute, not used. 721 * @buf: containing the string "selective". 722 * @count: unused variable. 723 * 724 * Description: 725 * If the buf contains the string "selective" then lpfc_selective_reset() 726 * is called to perform the reset. 727 * 728 * Notes: 729 * Assumes any error from lpfc_selective_reset() will be negative. 730 * If lpfc_selective_reset() returns zero then the length of the buffer 731 * is returned which indicates success 732 * 733 * Returns: 734 * -EINVAL if the buffer does not contain the string "selective" 735 * length of buf if lpfc-selective_reset() if the call succeeds 736 * return value of lpfc_selective_reset() if the call fails 737 **/ 738 static ssize_t 739 lpfc_issue_reset(struct device *dev, struct device_attribute *attr, 740 const char *buf, size_t count) 741 { 742 struct Scsi_Host *shost = class_to_shost(dev); 743 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 744 struct lpfc_hba *phba = vport->phba; 745 746 int status = -EINVAL; 747 748 if (strncmp(buf, "selective", sizeof("selective") - 1) == 0) 749 status = phba->lpfc_selective_reset(phba); 750 751 if (status == 0) 752 return strlen(buf); 753 else 754 return status; 755 } 756 757 /** 758 * lpfc_sli4_pdev_status_reg_wait - Wait for pdev status register for readyness 759 * @phba: lpfc_hba pointer. 760 * 761 * Description: 762 * SLI4 interface type-2 device to wait on the sliport status register for 763 * the readyness after performing a firmware reset. 764 * 765 * Returns: 766 * zero for success 767 **/ 768 static int 769 lpfc_sli4_pdev_status_reg_wait(struct lpfc_hba *phba) 770 { 771 struct lpfc_register portstat_reg; 772 int i; 773 774 775 lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr, 776 &portstat_reg.word0); 777 778 /* wait for the SLI port firmware ready after firmware reset */ 779 for (i = 0; i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT; i++) { 780 msleep(10); 781 lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr, 782 &portstat_reg.word0); 783 if (!bf_get(lpfc_sliport_status_err, &portstat_reg)) 784 continue; 785 if (!bf_get(lpfc_sliport_status_rn, &portstat_reg)) 786 continue; 787 if (!bf_get(lpfc_sliport_status_rdy, &portstat_reg)) 788 continue; 789 break; 790 } 791 792 if (i < LPFC_FW_RESET_MAXIMUM_WAIT_10MS_CNT) 793 return 0; 794 else 795 return -EIO; 796 } 797 798 /** 799 * lpfc_sli4_pdev_reg_request - Request physical dev to perform a register acc 800 * @phba: lpfc_hba pointer. 801 * 802 * Description: 803 * Request SLI4 interface type-2 device to perform a physical register set 804 * access. 805 * 806 * Returns: 807 * zero for success 808 **/ 809 static ssize_t 810 lpfc_sli4_pdev_reg_request(struct lpfc_hba *phba, uint32_t opcode) 811 { 812 struct completion online_compl; 813 struct pci_dev *pdev = phba->pcidev; 814 uint32_t reg_val; 815 int status = 0; 816 int rc; 817 818 if (!phba->cfg_enable_hba_reset) 819 return -EIO; 820 821 if ((phba->sli_rev < LPFC_SLI_REV4) || 822 (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) != 823 LPFC_SLI_INTF_IF_TYPE_2)) 824 return -EPERM; 825 826 if (!pdev->is_physfn) 827 return -EPERM; 828 829 /* Disable SR-IOV virtual functions if enabled */ 830 if (phba->cfg_sriov_nr_virtfn) { 831 pci_disable_sriov(pdev); 832 phba->cfg_sriov_nr_virtfn = 0; 833 } 834 status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); 835 836 if (status != 0) 837 return status; 838 839 /* wait for the device to be quiesced before firmware reset */ 840 msleep(100); 841 842 reg_val = readl(phba->sli4_hba.conf_regs_memmap_p + 843 LPFC_CTL_PDEV_CTL_OFFSET); 844 845 if (opcode == LPFC_FW_DUMP) 846 reg_val |= LPFC_FW_DUMP_REQUEST; 847 else if (opcode == LPFC_FW_RESET) 848 reg_val |= LPFC_CTL_PDEV_CTL_FRST; 849 else if (opcode == LPFC_DV_RESET) 850 reg_val |= LPFC_CTL_PDEV_CTL_DRST; 851 852 writel(reg_val, phba->sli4_hba.conf_regs_memmap_p + 853 LPFC_CTL_PDEV_CTL_OFFSET); 854 /* flush */ 855 readl(phba->sli4_hba.conf_regs_memmap_p + LPFC_CTL_PDEV_CTL_OFFSET); 856 857 /* delay driver action following IF_TYPE_2 reset */ 858 rc = lpfc_sli4_pdev_status_reg_wait(phba); 859 860 if (rc) 861 return -EIO; 862 863 init_completion(&online_compl); 864 rc = lpfc_workq_post_event(phba, &status, &online_compl, 865 LPFC_EVT_ONLINE); 866 if (rc == 0) 867 return -ENOMEM; 868 869 wait_for_completion(&online_compl); 870 871 if (status != 0) 872 return -EIO; 873 874 return 0; 875 } 876 877 /** 878 * lpfc_nport_evt_cnt_show - Return the number of nport events 879 * @dev: class device that is converted into a Scsi_host. 880 * @attr: device attribute, not used. 881 * @buf: on return contains the ascii number of nport events. 882 * 883 * Returns: size of formatted string. 884 **/ 885 static ssize_t 886 lpfc_nport_evt_cnt_show(struct device *dev, struct device_attribute *attr, 887 char *buf) 888 { 889 struct Scsi_Host *shost = class_to_shost(dev); 890 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 891 struct lpfc_hba *phba = vport->phba; 892 893 return snprintf(buf, PAGE_SIZE, "%d\n", phba->nport_event_cnt); 894 } 895 896 /** 897 * lpfc_board_mode_show - Return the state of the board 898 * @dev: class device that is converted into a Scsi_host. 899 * @attr: device attribute, not used. 900 * @buf: on return contains the state of the adapter. 901 * 902 * Returns: size of formatted string. 903 **/ 904 static ssize_t 905 lpfc_board_mode_show(struct device *dev, struct device_attribute *attr, 906 char *buf) 907 { 908 struct Scsi_Host *shost = class_to_shost(dev); 909 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 910 struct lpfc_hba *phba = vport->phba; 911 char * state; 912 913 if (phba->link_state == LPFC_HBA_ERROR) 914 state = "error"; 915 else if (phba->link_state == LPFC_WARM_START) 916 state = "warm start"; 917 else if (phba->link_state == LPFC_INIT_START) 918 state = "offline"; 919 else 920 state = "online"; 921 922 return snprintf(buf, PAGE_SIZE, "%s\n", state); 923 } 924 925 /** 926 * lpfc_board_mode_store - Puts the hba in online, offline, warm or error state 927 * @dev: class device that is converted into a Scsi_host. 928 * @attr: device attribute, not used. 929 * @buf: containing one of the strings "online", "offline", "warm" or "error". 930 * @count: unused variable. 931 * 932 * Returns: 933 * -EACCES if enable hba reset not enabled 934 * -EINVAL if the buffer does not contain a valid string (see above) 935 * -EIO if lpfc_workq_post_event() or lpfc_do_offline() fails 936 * buf length greater than zero indicates success 937 **/ 938 static ssize_t 939 lpfc_board_mode_store(struct device *dev, struct device_attribute *attr, 940 const char *buf, size_t count) 941 { 942 struct Scsi_Host *shost = class_to_shost(dev); 943 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 944 struct lpfc_hba *phba = vport->phba; 945 struct completion online_compl; 946 int status=0; 947 int rc; 948 949 if (!phba->cfg_enable_hba_reset) 950 return -EACCES; 951 952 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 953 "3050 lpfc_board_mode set to %s\n", buf); 954 955 init_completion(&online_compl); 956 957 if(strncmp(buf, "online", sizeof("online") - 1) == 0) { 958 rc = lpfc_workq_post_event(phba, &status, &online_compl, 959 LPFC_EVT_ONLINE); 960 if (rc == 0) 961 return -ENOMEM; 962 wait_for_completion(&online_compl); 963 } else if (strncmp(buf, "offline", sizeof("offline") - 1) == 0) 964 status = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); 965 else if (strncmp(buf, "warm", sizeof("warm") - 1) == 0) 966 if (phba->sli_rev == LPFC_SLI_REV4) 967 return -EINVAL; 968 else 969 status = lpfc_do_offline(phba, LPFC_EVT_WARM_START); 970 else if (strncmp(buf, "error", sizeof("error") - 1) == 0) 971 if (phba->sli_rev == LPFC_SLI_REV4) 972 return -EINVAL; 973 else 974 status = lpfc_do_offline(phba, LPFC_EVT_KILL); 975 else if (strncmp(buf, "dump", sizeof("dump") - 1) == 0) 976 status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_DUMP); 977 else if (strncmp(buf, "fw_reset", sizeof("fw_reset") - 1) == 0) 978 status = lpfc_sli4_pdev_reg_request(phba, LPFC_FW_RESET); 979 else if (strncmp(buf, "dv_reset", sizeof("dv_reset") - 1) == 0) 980 status = lpfc_sli4_pdev_reg_request(phba, LPFC_DV_RESET); 981 else 982 return -EINVAL; 983 984 if (!status) 985 return strlen(buf); 986 else 987 return -EIO; 988 } 989 990 /** 991 * lpfc_get_hba_info - Return various bits of informaton about the adapter 992 * @phba: pointer to the adapter structure. 993 * @mxri: max xri count. 994 * @axri: available xri count. 995 * @mrpi: max rpi count. 996 * @arpi: available rpi count. 997 * @mvpi: max vpi count. 998 * @avpi: available vpi count. 999 * 1000 * Description: 1001 * If an integer pointer for an count is not null then the value for the 1002 * count is returned. 1003 * 1004 * Returns: 1005 * zero on error 1006 * one for success 1007 **/ 1008 static int 1009 lpfc_get_hba_info(struct lpfc_hba *phba, 1010 uint32_t *mxri, uint32_t *axri, 1011 uint32_t *mrpi, uint32_t *arpi, 1012 uint32_t *mvpi, uint32_t *avpi) 1013 { 1014 struct lpfc_mbx_read_config *rd_config; 1015 LPFC_MBOXQ_t *pmboxq; 1016 MAILBOX_t *pmb; 1017 int rc = 0; 1018 uint32_t max_vpi; 1019 1020 /* 1021 * prevent udev from issuing mailbox commands until the port is 1022 * configured. 1023 */ 1024 if (phba->link_state < LPFC_LINK_DOWN || 1025 !phba->mbox_mem_pool || 1026 (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0) 1027 return 0; 1028 1029 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) 1030 return 0; 1031 1032 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1033 if (!pmboxq) 1034 return 0; 1035 memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t)); 1036 1037 pmb = &pmboxq->u.mb; 1038 pmb->mbxCommand = MBX_READ_CONFIG; 1039 pmb->mbxOwner = OWN_HOST; 1040 pmboxq->context1 = NULL; 1041 1042 if (phba->pport->fc_flag & FC_OFFLINE_MODE) 1043 rc = MBX_NOT_FINISHED; 1044 else 1045 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); 1046 1047 if (rc != MBX_SUCCESS) { 1048 if (rc != MBX_TIMEOUT) 1049 mempool_free(pmboxq, phba->mbox_mem_pool); 1050 return 0; 1051 } 1052 1053 if (phba->sli_rev == LPFC_SLI_REV4) { 1054 rd_config = &pmboxq->u.mqe.un.rd_config; 1055 if (mrpi) 1056 *mrpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config); 1057 if (arpi) 1058 *arpi = bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config) - 1059 phba->sli4_hba.max_cfg_param.rpi_used; 1060 if (mxri) 1061 *mxri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config); 1062 if (axri) 1063 *axri = bf_get(lpfc_mbx_rd_conf_xri_count, rd_config) - 1064 phba->sli4_hba.max_cfg_param.xri_used; 1065 1066 /* Account for differences with SLI-3. Get vpi count from 1067 * mailbox data and subtract one for max vpi value. 1068 */ 1069 max_vpi = (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) > 0) ? 1070 (bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config) - 1) : 0; 1071 1072 if (mvpi) 1073 *mvpi = max_vpi; 1074 if (avpi) 1075 *avpi = max_vpi - phba->sli4_hba.max_cfg_param.vpi_used; 1076 } else { 1077 if (mrpi) 1078 *mrpi = pmb->un.varRdConfig.max_rpi; 1079 if (arpi) 1080 *arpi = pmb->un.varRdConfig.avail_rpi; 1081 if (mxri) 1082 *mxri = pmb->un.varRdConfig.max_xri; 1083 if (axri) 1084 *axri = pmb->un.varRdConfig.avail_xri; 1085 if (mvpi) 1086 *mvpi = pmb->un.varRdConfig.max_vpi; 1087 if (avpi) 1088 *avpi = pmb->un.varRdConfig.avail_vpi; 1089 } 1090 1091 mempool_free(pmboxq, phba->mbox_mem_pool); 1092 return 1; 1093 } 1094 1095 /** 1096 * lpfc_max_rpi_show - Return maximum rpi 1097 * @dev: class device that is converted into a Scsi_host. 1098 * @attr: device attribute, not used. 1099 * @buf: on return contains the maximum rpi count in decimal or "Unknown". 1100 * 1101 * Description: 1102 * Calls lpfc_get_hba_info() asking for just the mrpi count. 1103 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set 1104 * to "Unknown" and the buffer length is returned, therefore the caller 1105 * must check for "Unknown" in the buffer to detect a failure. 1106 * 1107 * Returns: size of formatted string. 1108 **/ 1109 static ssize_t 1110 lpfc_max_rpi_show(struct device *dev, struct device_attribute *attr, 1111 char *buf) 1112 { 1113 struct Scsi_Host *shost = class_to_shost(dev); 1114 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1115 struct lpfc_hba *phba = vport->phba; 1116 uint32_t cnt; 1117 1118 if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, NULL, NULL, NULL)) 1119 return snprintf(buf, PAGE_SIZE, "%d\n", cnt); 1120 return snprintf(buf, PAGE_SIZE, "Unknown\n"); 1121 } 1122 1123 /** 1124 * lpfc_used_rpi_show - Return maximum rpi minus available rpi 1125 * @dev: class device that is converted into a Scsi_host. 1126 * @attr: device attribute, not used. 1127 * @buf: containing the used rpi count in decimal or "Unknown". 1128 * 1129 * Description: 1130 * Calls lpfc_get_hba_info() asking for just the mrpi and arpi counts. 1131 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set 1132 * to "Unknown" and the buffer length is returned, therefore the caller 1133 * must check for "Unknown" in the buffer to detect a failure. 1134 * 1135 * Returns: size of formatted string. 1136 **/ 1137 static ssize_t 1138 lpfc_used_rpi_show(struct device *dev, struct device_attribute *attr, 1139 char *buf) 1140 { 1141 struct Scsi_Host *shost = class_to_shost(dev); 1142 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1143 struct lpfc_hba *phba = vport->phba; 1144 uint32_t cnt, acnt; 1145 1146 if (lpfc_get_hba_info(phba, NULL, NULL, &cnt, &acnt, NULL, NULL)) 1147 return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt)); 1148 return snprintf(buf, PAGE_SIZE, "Unknown\n"); 1149 } 1150 1151 /** 1152 * lpfc_max_xri_show - Return maximum xri 1153 * @dev: class device that is converted into a Scsi_host. 1154 * @attr: device attribute, not used. 1155 * @buf: on return contains the maximum xri count in decimal or "Unknown". 1156 * 1157 * Description: 1158 * Calls lpfc_get_hba_info() asking for just the mrpi count. 1159 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set 1160 * to "Unknown" and the buffer length is returned, therefore the caller 1161 * must check for "Unknown" in the buffer to detect a failure. 1162 * 1163 * Returns: size of formatted string. 1164 **/ 1165 static ssize_t 1166 lpfc_max_xri_show(struct device *dev, struct device_attribute *attr, 1167 char *buf) 1168 { 1169 struct Scsi_Host *shost = class_to_shost(dev); 1170 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1171 struct lpfc_hba *phba = vport->phba; 1172 uint32_t cnt; 1173 1174 if (lpfc_get_hba_info(phba, &cnt, NULL, NULL, NULL, NULL, NULL)) 1175 return snprintf(buf, PAGE_SIZE, "%d\n", cnt); 1176 return snprintf(buf, PAGE_SIZE, "Unknown\n"); 1177 } 1178 1179 /** 1180 * lpfc_used_xri_show - Return maximum xpi minus the available xpi 1181 * @dev: class device that is converted into a Scsi_host. 1182 * @attr: device attribute, not used. 1183 * @buf: on return contains the used xri count in decimal or "Unknown". 1184 * 1185 * Description: 1186 * Calls lpfc_get_hba_info() asking for just the mxri and axri counts. 1187 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set 1188 * to "Unknown" and the buffer length is returned, therefore the caller 1189 * must check for "Unknown" in the buffer to detect a failure. 1190 * 1191 * Returns: size of formatted string. 1192 **/ 1193 static ssize_t 1194 lpfc_used_xri_show(struct device *dev, struct device_attribute *attr, 1195 char *buf) 1196 { 1197 struct Scsi_Host *shost = class_to_shost(dev); 1198 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1199 struct lpfc_hba *phba = vport->phba; 1200 uint32_t cnt, acnt; 1201 1202 if (lpfc_get_hba_info(phba, &cnt, &acnt, NULL, NULL, NULL, NULL)) 1203 return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt)); 1204 return snprintf(buf, PAGE_SIZE, "Unknown\n"); 1205 } 1206 1207 /** 1208 * lpfc_max_vpi_show - Return maximum vpi 1209 * @dev: class device that is converted into a Scsi_host. 1210 * @attr: device attribute, not used. 1211 * @buf: on return contains the maximum vpi count in decimal or "Unknown". 1212 * 1213 * Description: 1214 * Calls lpfc_get_hba_info() asking for just the mvpi count. 1215 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set 1216 * to "Unknown" and the buffer length is returned, therefore the caller 1217 * must check for "Unknown" in the buffer to detect a failure. 1218 * 1219 * Returns: size of formatted string. 1220 **/ 1221 static ssize_t 1222 lpfc_max_vpi_show(struct device *dev, struct device_attribute *attr, 1223 char *buf) 1224 { 1225 struct Scsi_Host *shost = class_to_shost(dev); 1226 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1227 struct lpfc_hba *phba = vport->phba; 1228 uint32_t cnt; 1229 1230 if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, NULL)) 1231 return snprintf(buf, PAGE_SIZE, "%d\n", cnt); 1232 return snprintf(buf, PAGE_SIZE, "Unknown\n"); 1233 } 1234 1235 /** 1236 * lpfc_used_vpi_show - Return maximum vpi minus the available vpi 1237 * @dev: class device that is converted into a Scsi_host. 1238 * @attr: device attribute, not used. 1239 * @buf: on return contains the used vpi count in decimal or "Unknown". 1240 * 1241 * Description: 1242 * Calls lpfc_get_hba_info() asking for just the mvpi and avpi counts. 1243 * If lpfc_get_hba_info() returns zero (failure) the buffer text is set 1244 * to "Unknown" and the buffer length is returned, therefore the caller 1245 * must check for "Unknown" in the buffer to detect a failure. 1246 * 1247 * Returns: size of formatted string. 1248 **/ 1249 static ssize_t 1250 lpfc_used_vpi_show(struct device *dev, struct device_attribute *attr, 1251 char *buf) 1252 { 1253 struct Scsi_Host *shost = class_to_shost(dev); 1254 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1255 struct lpfc_hba *phba = vport->phba; 1256 uint32_t cnt, acnt; 1257 1258 if (lpfc_get_hba_info(phba, NULL, NULL, NULL, NULL, &cnt, &acnt)) 1259 return snprintf(buf, PAGE_SIZE, "%d\n", (cnt - acnt)); 1260 return snprintf(buf, PAGE_SIZE, "Unknown\n"); 1261 } 1262 1263 /** 1264 * lpfc_npiv_info_show - Return text about NPIV support for the adapter 1265 * @dev: class device that is converted into a Scsi_host. 1266 * @attr: device attribute, not used. 1267 * @buf: text that must be interpreted to determine if npiv is supported. 1268 * 1269 * Description: 1270 * Buffer will contain text indicating npiv is not suppoerted on the port, 1271 * the port is an NPIV physical port, or it is an npiv virtual port with 1272 * the id of the vport. 1273 * 1274 * Returns: size of formatted string. 1275 **/ 1276 static ssize_t 1277 lpfc_npiv_info_show(struct device *dev, struct device_attribute *attr, 1278 char *buf) 1279 { 1280 struct Scsi_Host *shost = class_to_shost(dev); 1281 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1282 struct lpfc_hba *phba = vport->phba; 1283 1284 if (!(phba->max_vpi)) 1285 return snprintf(buf, PAGE_SIZE, "NPIV Not Supported\n"); 1286 if (vport->port_type == LPFC_PHYSICAL_PORT) 1287 return snprintf(buf, PAGE_SIZE, "NPIV Physical\n"); 1288 return snprintf(buf, PAGE_SIZE, "NPIV Virtual (VPI %d)\n", vport->vpi); 1289 } 1290 1291 /** 1292 * lpfc_poll_show - Return text about poll support for the adapter 1293 * @dev: class device that is converted into a Scsi_host. 1294 * @attr: device attribute, not used. 1295 * @buf: on return contains the cfg_poll in hex. 1296 * 1297 * Notes: 1298 * cfg_poll should be a lpfc_polling_flags type. 1299 * 1300 * Returns: size of formatted string. 1301 **/ 1302 static ssize_t 1303 lpfc_poll_show(struct device *dev, struct device_attribute *attr, 1304 char *buf) 1305 { 1306 struct Scsi_Host *shost = class_to_shost(dev); 1307 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1308 struct lpfc_hba *phba = vport->phba; 1309 1310 return snprintf(buf, PAGE_SIZE, "%#x\n", phba->cfg_poll); 1311 } 1312 1313 /** 1314 * lpfc_poll_store - Set the value of cfg_poll for the adapter 1315 * @dev: class device that is converted into a Scsi_host. 1316 * @attr: device attribute, not used. 1317 * @buf: one or more lpfc_polling_flags values. 1318 * @count: not used. 1319 * 1320 * Notes: 1321 * buf contents converted to integer and checked for a valid value. 1322 * 1323 * Returns: 1324 * -EINVAL if the buffer connot be converted or is out of range 1325 * length of the buf on success 1326 **/ 1327 static ssize_t 1328 lpfc_poll_store(struct device *dev, struct device_attribute *attr, 1329 const char *buf, size_t count) 1330 { 1331 struct Scsi_Host *shost = class_to_shost(dev); 1332 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1333 struct lpfc_hba *phba = vport->phba; 1334 uint32_t creg_val; 1335 uint32_t old_val; 1336 int val=0; 1337 1338 if (!isdigit(buf[0])) 1339 return -EINVAL; 1340 1341 if (sscanf(buf, "%i", &val) != 1) 1342 return -EINVAL; 1343 1344 if ((val & 0x3) != val) 1345 return -EINVAL; 1346 1347 if (phba->sli_rev == LPFC_SLI_REV4) 1348 val = 0; 1349 1350 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 1351 "3051 lpfc_poll changed from %d to %d\n", 1352 phba->cfg_poll, val); 1353 1354 spin_lock_irq(&phba->hbalock); 1355 1356 old_val = phba->cfg_poll; 1357 1358 if (val & ENABLE_FCP_RING_POLLING) { 1359 if ((val & DISABLE_FCP_RING_INT) && 1360 !(old_val & DISABLE_FCP_RING_INT)) { 1361 if (lpfc_readl(phba->HCregaddr, &creg_val)) { 1362 spin_unlock_irq(&phba->hbalock); 1363 return -EINVAL; 1364 } 1365 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING); 1366 writel(creg_val, phba->HCregaddr); 1367 readl(phba->HCregaddr); /* flush */ 1368 1369 lpfc_poll_start_timer(phba); 1370 } 1371 } else if (val != 0x0) { 1372 spin_unlock_irq(&phba->hbalock); 1373 return -EINVAL; 1374 } 1375 1376 if (!(val & DISABLE_FCP_RING_INT) && 1377 (old_val & DISABLE_FCP_RING_INT)) 1378 { 1379 spin_unlock_irq(&phba->hbalock); 1380 del_timer(&phba->fcp_poll_timer); 1381 spin_lock_irq(&phba->hbalock); 1382 if (lpfc_readl(phba->HCregaddr, &creg_val)) { 1383 spin_unlock_irq(&phba->hbalock); 1384 return -EINVAL; 1385 } 1386 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING); 1387 writel(creg_val, phba->HCregaddr); 1388 readl(phba->HCregaddr); /* flush */ 1389 } 1390 1391 phba->cfg_poll = val; 1392 1393 spin_unlock_irq(&phba->hbalock); 1394 1395 return strlen(buf); 1396 } 1397 1398 /** 1399 * lpfc_fips_level_show - Return the current FIPS level for the HBA 1400 * @dev: class unused variable. 1401 * @attr: device attribute, not used. 1402 * @buf: on return contains the module description text. 1403 * 1404 * Returns: size of formatted string. 1405 **/ 1406 static ssize_t 1407 lpfc_fips_level_show(struct device *dev, struct device_attribute *attr, 1408 char *buf) 1409 { 1410 struct Scsi_Host *shost = class_to_shost(dev); 1411 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1412 struct lpfc_hba *phba = vport->phba; 1413 1414 return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_level); 1415 } 1416 1417 /** 1418 * lpfc_fips_rev_show - Return the FIPS Spec revision for the HBA 1419 * @dev: class unused variable. 1420 * @attr: device attribute, not used. 1421 * @buf: on return contains the module description text. 1422 * 1423 * Returns: size of formatted string. 1424 **/ 1425 static ssize_t 1426 lpfc_fips_rev_show(struct device *dev, struct device_attribute *attr, 1427 char *buf) 1428 { 1429 struct Scsi_Host *shost = class_to_shost(dev); 1430 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1431 struct lpfc_hba *phba = vport->phba; 1432 1433 return snprintf(buf, PAGE_SIZE, "%d\n", phba->fips_spec_rev); 1434 } 1435 1436 /** 1437 * lpfc_dss_show - Return the current state of dss and the configured state 1438 * @dev: class converted to a Scsi_host structure. 1439 * @attr: device attribute, not used. 1440 * @buf: on return contains the formatted text. 1441 * 1442 * Returns: size of formatted string. 1443 **/ 1444 static ssize_t 1445 lpfc_dss_show(struct device *dev, struct device_attribute *attr, 1446 char *buf) 1447 { 1448 struct Scsi_Host *shost = class_to_shost(dev); 1449 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1450 struct lpfc_hba *phba = vport->phba; 1451 1452 return snprintf(buf, PAGE_SIZE, "%s - %sOperational\n", 1453 (phba->cfg_enable_dss) ? "Enabled" : "Disabled", 1454 (phba->sli3_options & LPFC_SLI3_DSS_ENABLED) ? 1455 "" : "Not "); 1456 } 1457 1458 /** 1459 * lpfc_sriov_hw_max_virtfn_show - Return maximum number of virtual functions 1460 * @dev: class converted to a Scsi_host structure. 1461 * @attr: device attribute, not used. 1462 * @buf: on return contains the formatted support level. 1463 * 1464 * Description: 1465 * Returns the maximum number of virtual functions a physical function can 1466 * support, 0 will be returned if called on virtual function. 1467 * 1468 * Returns: size of formatted string. 1469 **/ 1470 static ssize_t 1471 lpfc_sriov_hw_max_virtfn_show(struct device *dev, 1472 struct device_attribute *attr, 1473 char *buf) 1474 { 1475 struct Scsi_Host *shost = class_to_shost(dev); 1476 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1477 struct lpfc_hba *phba = vport->phba; 1478 uint16_t max_nr_virtfn; 1479 1480 max_nr_virtfn = lpfc_sli_sriov_nr_virtfn_get(phba); 1481 return snprintf(buf, PAGE_SIZE, "%d\n", max_nr_virtfn); 1482 } 1483 1484 /** 1485 * lpfc_param_show - Return a cfg attribute value in decimal 1486 * 1487 * Description: 1488 * Macro that given an attr e.g. hba_queue_depth expands 1489 * into a function with the name lpfc_hba_queue_depth_show. 1490 * 1491 * lpfc_##attr##_show: Return the decimal value of an adapters cfg_xxx field. 1492 * @dev: class device that is converted into a Scsi_host. 1493 * @attr: device attribute, not used. 1494 * @buf: on return contains the attribute value in decimal. 1495 * 1496 * Returns: size of formatted string. 1497 **/ 1498 #define lpfc_param_show(attr) \ 1499 static ssize_t \ 1500 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \ 1501 char *buf) \ 1502 { \ 1503 struct Scsi_Host *shost = class_to_shost(dev);\ 1504 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\ 1505 struct lpfc_hba *phba = vport->phba;\ 1506 uint val = 0;\ 1507 val = phba->cfg_##attr;\ 1508 return snprintf(buf, PAGE_SIZE, "%d\n",\ 1509 phba->cfg_##attr);\ 1510 } 1511 1512 /** 1513 * lpfc_param_hex_show - Return a cfg attribute value in hex 1514 * 1515 * Description: 1516 * Macro that given an attr e.g. hba_queue_depth expands 1517 * into a function with the name lpfc_hba_queue_depth_show 1518 * 1519 * lpfc_##attr##_show: Return the hex value of an adapters cfg_xxx field. 1520 * @dev: class device that is converted into a Scsi_host. 1521 * @attr: device attribute, not used. 1522 * @buf: on return contains the attribute value in hexadecimal. 1523 * 1524 * Returns: size of formatted string. 1525 **/ 1526 #define lpfc_param_hex_show(attr) \ 1527 static ssize_t \ 1528 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \ 1529 char *buf) \ 1530 { \ 1531 struct Scsi_Host *shost = class_to_shost(dev);\ 1532 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\ 1533 struct lpfc_hba *phba = vport->phba;\ 1534 uint val = 0;\ 1535 val = phba->cfg_##attr;\ 1536 return snprintf(buf, PAGE_SIZE, "%#x\n",\ 1537 phba->cfg_##attr);\ 1538 } 1539 1540 /** 1541 * lpfc_param_init - Initializes a cfg attribute 1542 * 1543 * Description: 1544 * Macro that given an attr e.g. hba_queue_depth expands 1545 * into a function with the name lpfc_hba_queue_depth_init. The macro also 1546 * takes a default argument, a minimum and maximum argument. 1547 * 1548 * lpfc_##attr##_init: Initializes an attribute. 1549 * @phba: pointer the the adapter structure. 1550 * @val: integer attribute value. 1551 * 1552 * Validates the min and max values then sets the adapter config field 1553 * accordingly, or uses the default if out of range and prints an error message. 1554 * 1555 * Returns: 1556 * zero on success 1557 * -EINVAL if default used 1558 **/ 1559 #define lpfc_param_init(attr, default, minval, maxval) \ 1560 static int \ 1561 lpfc_##attr##_init(struct lpfc_hba *phba, uint val) \ 1562 { \ 1563 if (val >= minval && val <= maxval) {\ 1564 phba->cfg_##attr = val;\ 1565 return 0;\ 1566 }\ 1567 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \ 1568 "0449 lpfc_"#attr" attribute cannot be set to %d, "\ 1569 "allowed range is ["#minval", "#maxval"]\n", val); \ 1570 phba->cfg_##attr = default;\ 1571 return -EINVAL;\ 1572 } 1573 1574 /** 1575 * lpfc_param_set - Set a cfg attribute value 1576 * 1577 * Description: 1578 * Macro that given an attr e.g. hba_queue_depth expands 1579 * into a function with the name lpfc_hba_queue_depth_set 1580 * 1581 * lpfc_##attr##_set: Sets an attribute value. 1582 * @phba: pointer the the adapter structure. 1583 * @val: integer attribute value. 1584 * 1585 * Description: 1586 * Validates the min and max values then sets the 1587 * adapter config field if in the valid range. prints error message 1588 * and does not set the parameter if invalid. 1589 * 1590 * Returns: 1591 * zero on success 1592 * -EINVAL if val is invalid 1593 **/ 1594 #define lpfc_param_set(attr, default, minval, maxval) \ 1595 static int \ 1596 lpfc_##attr##_set(struct lpfc_hba *phba, uint val) \ 1597 { \ 1598 if (val >= minval && val <= maxval) {\ 1599 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \ 1600 "3052 lpfc_" #attr " changed from %d to %d\n", \ 1601 phba->cfg_##attr, val); \ 1602 phba->cfg_##attr = val;\ 1603 return 0;\ 1604 }\ 1605 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, \ 1606 "0450 lpfc_"#attr" attribute cannot be set to %d, "\ 1607 "allowed range is ["#minval", "#maxval"]\n", val); \ 1608 return -EINVAL;\ 1609 } 1610 1611 /** 1612 * lpfc_param_store - Set a vport attribute value 1613 * 1614 * Description: 1615 * Macro that given an attr e.g. hba_queue_depth expands 1616 * into a function with the name lpfc_hba_queue_depth_store. 1617 * 1618 * lpfc_##attr##_store: Set an sttribute value. 1619 * @dev: class device that is converted into a Scsi_host. 1620 * @attr: device attribute, not used. 1621 * @buf: contains the attribute value in ascii. 1622 * @count: not used. 1623 * 1624 * Description: 1625 * Convert the ascii text number to an integer, then 1626 * use the lpfc_##attr##_set function to set the value. 1627 * 1628 * Returns: 1629 * -EINVAL if val is invalid or lpfc_##attr##_set() fails 1630 * length of buffer upon success. 1631 **/ 1632 #define lpfc_param_store(attr) \ 1633 static ssize_t \ 1634 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \ 1635 const char *buf, size_t count) \ 1636 { \ 1637 struct Scsi_Host *shost = class_to_shost(dev);\ 1638 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\ 1639 struct lpfc_hba *phba = vport->phba;\ 1640 uint val = 0;\ 1641 if (!isdigit(buf[0]))\ 1642 return -EINVAL;\ 1643 if (sscanf(buf, "%i", &val) != 1)\ 1644 return -EINVAL;\ 1645 if (lpfc_##attr##_set(phba, val) == 0) \ 1646 return strlen(buf);\ 1647 else \ 1648 return -EINVAL;\ 1649 } 1650 1651 /** 1652 * lpfc_vport_param_show - Return decimal formatted cfg attribute value 1653 * 1654 * Description: 1655 * Macro that given an attr e.g. hba_queue_depth expands 1656 * into a function with the name lpfc_hba_queue_depth_show 1657 * 1658 * lpfc_##attr##_show: prints the attribute value in decimal. 1659 * @dev: class device that is converted into a Scsi_host. 1660 * @attr: device attribute, not used. 1661 * @buf: on return contains the attribute value in decimal. 1662 * 1663 * Returns: length of formatted string. 1664 **/ 1665 #define lpfc_vport_param_show(attr) \ 1666 static ssize_t \ 1667 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \ 1668 char *buf) \ 1669 { \ 1670 struct Scsi_Host *shost = class_to_shost(dev);\ 1671 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\ 1672 uint val = 0;\ 1673 val = vport->cfg_##attr;\ 1674 return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_##attr);\ 1675 } 1676 1677 /** 1678 * lpfc_vport_param_hex_show - Return hex formatted attribute value 1679 * 1680 * Description: 1681 * Macro that given an attr e.g. 1682 * hba_queue_depth expands into a function with the name 1683 * lpfc_hba_queue_depth_show 1684 * 1685 * lpfc_##attr##_show: prints the attribute value in hexadecimal. 1686 * @dev: class device that is converted into a Scsi_host. 1687 * @attr: device attribute, not used. 1688 * @buf: on return contains the attribute value in hexadecimal. 1689 * 1690 * Returns: length of formatted string. 1691 **/ 1692 #define lpfc_vport_param_hex_show(attr) \ 1693 static ssize_t \ 1694 lpfc_##attr##_show(struct device *dev, struct device_attribute *attr, \ 1695 char *buf) \ 1696 { \ 1697 struct Scsi_Host *shost = class_to_shost(dev);\ 1698 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\ 1699 uint val = 0;\ 1700 val = vport->cfg_##attr;\ 1701 return snprintf(buf, PAGE_SIZE, "%#x\n", vport->cfg_##attr);\ 1702 } 1703 1704 /** 1705 * lpfc_vport_param_init - Initialize a vport cfg attribute 1706 * 1707 * Description: 1708 * Macro that given an attr e.g. hba_queue_depth expands 1709 * into a function with the name lpfc_hba_queue_depth_init. The macro also 1710 * takes a default argument, a minimum and maximum argument. 1711 * 1712 * lpfc_##attr##_init: validates the min and max values then sets the 1713 * adapter config field accordingly, or uses the default if out of range 1714 * and prints an error message. 1715 * @phba: pointer the the adapter structure. 1716 * @val: integer attribute value. 1717 * 1718 * Returns: 1719 * zero on success 1720 * -EINVAL if default used 1721 **/ 1722 #define lpfc_vport_param_init(attr, default, minval, maxval) \ 1723 static int \ 1724 lpfc_##attr##_init(struct lpfc_vport *vport, uint val) \ 1725 { \ 1726 if (val >= minval && val <= maxval) {\ 1727 vport->cfg_##attr = val;\ 1728 return 0;\ 1729 }\ 1730 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \ 1731 "0423 lpfc_"#attr" attribute cannot be set to %d, "\ 1732 "allowed range is ["#minval", "#maxval"]\n", val); \ 1733 vport->cfg_##attr = default;\ 1734 return -EINVAL;\ 1735 } 1736 1737 /** 1738 * lpfc_vport_param_set - Set a vport cfg attribute 1739 * 1740 * Description: 1741 * Macro that given an attr e.g. hba_queue_depth expands 1742 * into a function with the name lpfc_hba_queue_depth_set 1743 * 1744 * lpfc_##attr##_set: validates the min and max values then sets the 1745 * adapter config field if in the valid range. prints error message 1746 * and does not set the parameter if invalid. 1747 * @phba: pointer the the adapter structure. 1748 * @val: integer attribute value. 1749 * 1750 * Returns: 1751 * zero on success 1752 * -EINVAL if val is invalid 1753 **/ 1754 #define lpfc_vport_param_set(attr, default, minval, maxval) \ 1755 static int \ 1756 lpfc_##attr##_set(struct lpfc_vport *vport, uint val) \ 1757 { \ 1758 if (val >= minval && val <= maxval) {\ 1759 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \ 1760 "3053 lpfc_" #attr " changed from %d to %d\n", \ 1761 vport->cfg_##attr, val); \ 1762 vport->cfg_##attr = val;\ 1763 return 0;\ 1764 }\ 1765 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, \ 1766 "0424 lpfc_"#attr" attribute cannot be set to %d, "\ 1767 "allowed range is ["#minval", "#maxval"]\n", val); \ 1768 return -EINVAL;\ 1769 } 1770 1771 /** 1772 * lpfc_vport_param_store - Set a vport attribute 1773 * 1774 * Description: 1775 * Macro that given an attr e.g. hba_queue_depth 1776 * expands into a function with the name lpfc_hba_queue_depth_store 1777 * 1778 * lpfc_##attr##_store: convert the ascii text number to an integer, then 1779 * use the lpfc_##attr##_set function to set the value. 1780 * @cdev: class device that is converted into a Scsi_host. 1781 * @buf: contains the attribute value in decimal. 1782 * @count: not used. 1783 * 1784 * Returns: 1785 * -EINVAL if val is invalid or lpfc_##attr##_set() fails 1786 * length of buffer upon success. 1787 **/ 1788 #define lpfc_vport_param_store(attr) \ 1789 static ssize_t \ 1790 lpfc_##attr##_store(struct device *dev, struct device_attribute *attr, \ 1791 const char *buf, size_t count) \ 1792 { \ 1793 struct Scsi_Host *shost = class_to_shost(dev);\ 1794 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;\ 1795 uint val = 0;\ 1796 if (!isdigit(buf[0]))\ 1797 return -EINVAL;\ 1798 if (sscanf(buf, "%i", &val) != 1)\ 1799 return -EINVAL;\ 1800 if (lpfc_##attr##_set(vport, val) == 0) \ 1801 return strlen(buf);\ 1802 else \ 1803 return -EINVAL;\ 1804 } 1805 1806 1807 #define LPFC_ATTR(name, defval, minval, maxval, desc) \ 1808 static uint lpfc_##name = defval;\ 1809 module_param(lpfc_##name, uint, S_IRUGO);\ 1810 MODULE_PARM_DESC(lpfc_##name, desc);\ 1811 lpfc_param_init(name, defval, minval, maxval) 1812 1813 #define LPFC_ATTR_R(name, defval, minval, maxval, desc) \ 1814 static uint lpfc_##name = defval;\ 1815 module_param(lpfc_##name, uint, S_IRUGO);\ 1816 MODULE_PARM_DESC(lpfc_##name, desc);\ 1817 lpfc_param_show(name)\ 1818 lpfc_param_init(name, defval, minval, maxval)\ 1819 static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) 1820 1821 #define LPFC_ATTR_RW(name, defval, minval, maxval, desc) \ 1822 static uint lpfc_##name = defval;\ 1823 module_param(lpfc_##name, uint, S_IRUGO);\ 1824 MODULE_PARM_DESC(lpfc_##name, desc);\ 1825 lpfc_param_show(name)\ 1826 lpfc_param_init(name, defval, minval, maxval)\ 1827 lpfc_param_set(name, defval, minval, maxval)\ 1828 lpfc_param_store(name)\ 1829 static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\ 1830 lpfc_##name##_show, lpfc_##name##_store) 1831 1832 #define LPFC_ATTR_HEX_R(name, defval, minval, maxval, desc) \ 1833 static uint lpfc_##name = defval;\ 1834 module_param(lpfc_##name, uint, S_IRUGO);\ 1835 MODULE_PARM_DESC(lpfc_##name, desc);\ 1836 lpfc_param_hex_show(name)\ 1837 lpfc_param_init(name, defval, minval, maxval)\ 1838 static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) 1839 1840 #define LPFC_ATTR_HEX_RW(name, defval, minval, maxval, desc) \ 1841 static uint lpfc_##name = defval;\ 1842 module_param(lpfc_##name, uint, S_IRUGO);\ 1843 MODULE_PARM_DESC(lpfc_##name, desc);\ 1844 lpfc_param_hex_show(name)\ 1845 lpfc_param_init(name, defval, minval, maxval)\ 1846 lpfc_param_set(name, defval, minval, maxval)\ 1847 lpfc_param_store(name)\ 1848 static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\ 1849 lpfc_##name##_show, lpfc_##name##_store) 1850 1851 #define LPFC_VPORT_ATTR(name, defval, minval, maxval, desc) \ 1852 static uint lpfc_##name = defval;\ 1853 module_param(lpfc_##name, uint, S_IRUGO);\ 1854 MODULE_PARM_DESC(lpfc_##name, desc);\ 1855 lpfc_vport_param_init(name, defval, minval, maxval) 1856 1857 #define LPFC_VPORT_ATTR_R(name, defval, minval, maxval, desc) \ 1858 static uint lpfc_##name = defval;\ 1859 module_param(lpfc_##name, uint, S_IRUGO);\ 1860 MODULE_PARM_DESC(lpfc_##name, desc);\ 1861 lpfc_vport_param_show(name)\ 1862 lpfc_vport_param_init(name, defval, minval, maxval)\ 1863 static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) 1864 1865 #define LPFC_VPORT_ATTR_RW(name, defval, minval, maxval, desc) \ 1866 static uint lpfc_##name = defval;\ 1867 module_param(lpfc_##name, uint, S_IRUGO);\ 1868 MODULE_PARM_DESC(lpfc_##name, desc);\ 1869 lpfc_vport_param_show(name)\ 1870 lpfc_vport_param_init(name, defval, minval, maxval)\ 1871 lpfc_vport_param_set(name, defval, minval, maxval)\ 1872 lpfc_vport_param_store(name)\ 1873 static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\ 1874 lpfc_##name##_show, lpfc_##name##_store) 1875 1876 #define LPFC_VPORT_ATTR_HEX_R(name, defval, minval, maxval, desc) \ 1877 static uint lpfc_##name = defval;\ 1878 module_param(lpfc_##name, uint, S_IRUGO);\ 1879 MODULE_PARM_DESC(lpfc_##name, desc);\ 1880 lpfc_vport_param_hex_show(name)\ 1881 lpfc_vport_param_init(name, defval, minval, maxval)\ 1882 static DEVICE_ATTR(lpfc_##name, S_IRUGO , lpfc_##name##_show, NULL) 1883 1884 #define LPFC_VPORT_ATTR_HEX_RW(name, defval, minval, maxval, desc) \ 1885 static uint lpfc_##name = defval;\ 1886 module_param(lpfc_##name, uint, S_IRUGO);\ 1887 MODULE_PARM_DESC(lpfc_##name, desc);\ 1888 lpfc_vport_param_hex_show(name)\ 1889 lpfc_vport_param_init(name, defval, minval, maxval)\ 1890 lpfc_vport_param_set(name, defval, minval, maxval)\ 1891 lpfc_vport_param_store(name)\ 1892 static DEVICE_ATTR(lpfc_##name, S_IRUGO | S_IWUSR,\ 1893 lpfc_##name##_show, lpfc_##name##_store) 1894 1895 static DEVICE_ATTR(bg_info, S_IRUGO, lpfc_bg_info_show, NULL); 1896 static DEVICE_ATTR(bg_guard_err, S_IRUGO, lpfc_bg_guard_err_show, NULL); 1897 static DEVICE_ATTR(bg_apptag_err, S_IRUGO, lpfc_bg_apptag_err_show, NULL); 1898 static DEVICE_ATTR(bg_reftag_err, S_IRUGO, lpfc_bg_reftag_err_show, NULL); 1899 static DEVICE_ATTR(info, S_IRUGO, lpfc_info_show, NULL); 1900 static DEVICE_ATTR(serialnum, S_IRUGO, lpfc_serialnum_show, NULL); 1901 static DEVICE_ATTR(modeldesc, S_IRUGO, lpfc_modeldesc_show, NULL); 1902 static DEVICE_ATTR(modelname, S_IRUGO, lpfc_modelname_show, NULL); 1903 static DEVICE_ATTR(programtype, S_IRUGO, lpfc_programtype_show, NULL); 1904 static DEVICE_ATTR(portnum, S_IRUGO, lpfc_vportnum_show, NULL); 1905 static DEVICE_ATTR(fwrev, S_IRUGO, lpfc_fwrev_show, NULL); 1906 static DEVICE_ATTR(hdw, S_IRUGO, lpfc_hdw_show, NULL); 1907 static DEVICE_ATTR(link_state, S_IRUGO | S_IWUSR, lpfc_link_state_show, 1908 lpfc_link_state_store); 1909 static DEVICE_ATTR(option_rom_version, S_IRUGO, 1910 lpfc_option_rom_version_show, NULL); 1911 static DEVICE_ATTR(num_discovered_ports, S_IRUGO, 1912 lpfc_num_discovered_ports_show, NULL); 1913 static DEVICE_ATTR(menlo_mgmt_mode, S_IRUGO, lpfc_mlomgmt_show, NULL); 1914 static DEVICE_ATTR(nport_evt_cnt, S_IRUGO, lpfc_nport_evt_cnt_show, NULL); 1915 static DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show, NULL); 1916 static DEVICE_ATTR(lpfc_enable_fip, S_IRUGO, lpfc_enable_fip_show, NULL); 1917 static DEVICE_ATTR(board_mode, S_IRUGO | S_IWUSR, 1918 lpfc_board_mode_show, lpfc_board_mode_store); 1919 static DEVICE_ATTR(issue_reset, S_IWUSR, NULL, lpfc_issue_reset); 1920 static DEVICE_ATTR(max_vpi, S_IRUGO, lpfc_max_vpi_show, NULL); 1921 static DEVICE_ATTR(used_vpi, S_IRUGO, lpfc_used_vpi_show, NULL); 1922 static DEVICE_ATTR(max_rpi, S_IRUGO, lpfc_max_rpi_show, NULL); 1923 static DEVICE_ATTR(used_rpi, S_IRUGO, lpfc_used_rpi_show, NULL); 1924 static DEVICE_ATTR(max_xri, S_IRUGO, lpfc_max_xri_show, NULL); 1925 static DEVICE_ATTR(used_xri, S_IRUGO, lpfc_used_xri_show, NULL); 1926 static DEVICE_ATTR(npiv_info, S_IRUGO, lpfc_npiv_info_show, NULL); 1927 static DEVICE_ATTR(lpfc_temp_sensor, S_IRUGO, lpfc_temp_sensor_show, NULL); 1928 static DEVICE_ATTR(lpfc_fips_level, S_IRUGO, lpfc_fips_level_show, NULL); 1929 static DEVICE_ATTR(lpfc_fips_rev, S_IRUGO, lpfc_fips_rev_show, NULL); 1930 static DEVICE_ATTR(lpfc_dss, S_IRUGO, lpfc_dss_show, NULL); 1931 static DEVICE_ATTR(lpfc_sriov_hw_max_virtfn, S_IRUGO, 1932 lpfc_sriov_hw_max_virtfn_show, NULL); 1933 1934 static char *lpfc_soft_wwn_key = "C99G71SL8032A"; 1935 1936 /** 1937 * lpfc_soft_wwn_enable_store - Allows setting of the wwn if the key is valid 1938 * @dev: class device that is converted into a Scsi_host. 1939 * @attr: device attribute, not used. 1940 * @buf: containing the string lpfc_soft_wwn_key. 1941 * @count: must be size of lpfc_soft_wwn_key. 1942 * 1943 * Returns: 1944 * -EINVAL if the buffer does not contain lpfc_soft_wwn_key 1945 * length of buf indicates success 1946 **/ 1947 static ssize_t 1948 lpfc_soft_wwn_enable_store(struct device *dev, struct device_attribute *attr, 1949 const char *buf, size_t count) 1950 { 1951 struct Scsi_Host *shost = class_to_shost(dev); 1952 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1953 struct lpfc_hba *phba = vport->phba; 1954 unsigned int cnt = count; 1955 1956 /* 1957 * We're doing a simple sanity check for soft_wwpn setting. 1958 * We require that the user write a specific key to enable 1959 * the soft_wwpn attribute to be settable. Once the attribute 1960 * is written, the enable key resets. If further updates are 1961 * desired, the key must be written again to re-enable the 1962 * attribute. 1963 * 1964 * The "key" is not secret - it is a hardcoded string shown 1965 * here. The intent is to protect against the random user or 1966 * application that is just writing attributes. 1967 */ 1968 1969 /* count may include a LF at end of string */ 1970 if (buf[cnt-1] == '\n') 1971 cnt--; 1972 1973 if ((cnt != strlen(lpfc_soft_wwn_key)) || 1974 (strncmp(buf, lpfc_soft_wwn_key, strlen(lpfc_soft_wwn_key)) != 0)) 1975 return -EINVAL; 1976 1977 phba->soft_wwn_enable = 1; 1978 return count; 1979 } 1980 static DEVICE_ATTR(lpfc_soft_wwn_enable, S_IWUSR, NULL, 1981 lpfc_soft_wwn_enable_store); 1982 1983 /** 1984 * lpfc_soft_wwpn_show - Return the cfg soft ww port name of the adapter 1985 * @dev: class device that is converted into a Scsi_host. 1986 * @attr: device attribute, not used. 1987 * @buf: on return contains the wwpn in hexadecimal. 1988 * 1989 * Returns: size of formatted string. 1990 **/ 1991 static ssize_t 1992 lpfc_soft_wwpn_show(struct device *dev, struct device_attribute *attr, 1993 char *buf) 1994 { 1995 struct Scsi_Host *shost = class_to_shost(dev); 1996 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 1997 struct lpfc_hba *phba = vport->phba; 1998 1999 return snprintf(buf, PAGE_SIZE, "0x%llx\n", 2000 (unsigned long long)phba->cfg_soft_wwpn); 2001 } 2002 2003 /** 2004 * lpfc_soft_wwpn_store - Set the ww port name of the adapter 2005 * @dev class device that is converted into a Scsi_host. 2006 * @attr: device attribute, not used. 2007 * @buf: contains the wwpn in hexadecimal. 2008 * @count: number of wwpn bytes in buf 2009 * 2010 * Returns: 2011 * -EACCES hba reset not enabled, adapter over temp 2012 * -EINVAL soft wwn not enabled, count is invalid, invalid wwpn byte invalid 2013 * -EIO error taking adapter offline or online 2014 * value of count on success 2015 **/ 2016 static ssize_t 2017 lpfc_soft_wwpn_store(struct device *dev, struct device_attribute *attr, 2018 const char *buf, size_t count) 2019 { 2020 struct Scsi_Host *shost = class_to_shost(dev); 2021 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2022 struct lpfc_hba *phba = vport->phba; 2023 struct completion online_compl; 2024 int stat1=0, stat2=0; 2025 unsigned int i, j, cnt=count; 2026 u8 wwpn[8]; 2027 int rc; 2028 2029 if (!phba->cfg_enable_hba_reset) 2030 return -EACCES; 2031 spin_lock_irq(&phba->hbalock); 2032 if (phba->over_temp_state == HBA_OVER_TEMP) { 2033 spin_unlock_irq(&phba->hbalock); 2034 return -EACCES; 2035 } 2036 spin_unlock_irq(&phba->hbalock); 2037 /* count may include a LF at end of string */ 2038 if (buf[cnt-1] == '\n') 2039 cnt--; 2040 2041 if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) || 2042 ((cnt == 17) && (*buf++ != 'x')) || 2043 ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x')))) 2044 return -EINVAL; 2045 2046 phba->soft_wwn_enable = 0; 2047 2048 memset(wwpn, 0, sizeof(wwpn)); 2049 2050 /* Validate and store the new name */ 2051 for (i=0, j=0; i < 16; i++) { 2052 int value; 2053 2054 value = hex_to_bin(*buf++); 2055 if (value >= 0) 2056 j = (j << 4) | value; 2057 else 2058 return -EINVAL; 2059 if (i % 2) { 2060 wwpn[i/2] = j & 0xff; 2061 j = 0; 2062 } 2063 } 2064 phba->cfg_soft_wwpn = wwn_to_u64(wwpn); 2065 fc_host_port_name(shost) = phba->cfg_soft_wwpn; 2066 if (phba->cfg_soft_wwnn) 2067 fc_host_node_name(shost) = phba->cfg_soft_wwnn; 2068 2069 dev_printk(KERN_NOTICE, &phba->pcidev->dev, 2070 "lpfc%d: Reinitializing to use soft_wwpn\n", phba->brd_no); 2071 2072 stat1 = lpfc_do_offline(phba, LPFC_EVT_OFFLINE); 2073 if (stat1) 2074 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2075 "0463 lpfc_soft_wwpn attribute set failed to " 2076 "reinit adapter - %d\n", stat1); 2077 init_completion(&online_compl); 2078 rc = lpfc_workq_post_event(phba, &stat2, &online_compl, 2079 LPFC_EVT_ONLINE); 2080 if (rc == 0) 2081 return -ENOMEM; 2082 2083 wait_for_completion(&online_compl); 2084 if (stat2) 2085 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2086 "0464 lpfc_soft_wwpn attribute set failed to " 2087 "reinit adapter - %d\n", stat2); 2088 return (stat1 || stat2) ? -EIO : count; 2089 } 2090 static DEVICE_ATTR(lpfc_soft_wwpn, S_IRUGO | S_IWUSR,\ 2091 lpfc_soft_wwpn_show, lpfc_soft_wwpn_store); 2092 2093 /** 2094 * lpfc_soft_wwnn_show - Return the cfg soft ww node name for the adapter 2095 * @dev: class device that is converted into a Scsi_host. 2096 * @attr: device attribute, not used. 2097 * @buf: on return contains the wwnn in hexadecimal. 2098 * 2099 * Returns: size of formatted string. 2100 **/ 2101 static ssize_t 2102 lpfc_soft_wwnn_show(struct device *dev, struct device_attribute *attr, 2103 char *buf) 2104 { 2105 struct Scsi_Host *shost = class_to_shost(dev); 2106 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; 2107 return snprintf(buf, PAGE_SIZE, "0x%llx\n", 2108 (unsigned long long)phba->cfg_soft_wwnn); 2109 } 2110 2111 /** 2112 * lpfc_soft_wwnn_store - sets the ww node name of the adapter 2113 * @cdev: class device that is converted into a Scsi_host. 2114 * @buf: contains the ww node name in hexadecimal. 2115 * @count: number of wwnn bytes in buf. 2116 * 2117 * Returns: 2118 * -EINVAL soft wwn not enabled, count is invalid, invalid wwnn byte invalid 2119 * value of count on success 2120 **/ 2121 static ssize_t 2122 lpfc_soft_wwnn_store(struct device *dev, struct device_attribute *attr, 2123 const char *buf, size_t count) 2124 { 2125 struct Scsi_Host *shost = class_to_shost(dev); 2126 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; 2127 unsigned int i, j, cnt=count; 2128 u8 wwnn[8]; 2129 2130 /* count may include a LF at end of string */ 2131 if (buf[cnt-1] == '\n') 2132 cnt--; 2133 2134 if (!phba->soft_wwn_enable || (cnt < 16) || (cnt > 18) || 2135 ((cnt == 17) && (*buf++ != 'x')) || 2136 ((cnt == 18) && ((*buf++ != '0') || (*buf++ != 'x')))) 2137 return -EINVAL; 2138 2139 /* 2140 * Allow wwnn to be set many times, as long as the enable is set. 2141 * However, once the wwpn is set, everything locks. 2142 */ 2143 2144 memset(wwnn, 0, sizeof(wwnn)); 2145 2146 /* Validate and store the new name */ 2147 for (i=0, j=0; i < 16; i++) { 2148 int value; 2149 2150 value = hex_to_bin(*buf++); 2151 if (value >= 0) 2152 j = (j << 4) | value; 2153 else 2154 return -EINVAL; 2155 if (i % 2) { 2156 wwnn[i/2] = j & 0xff; 2157 j = 0; 2158 } 2159 } 2160 phba->cfg_soft_wwnn = wwn_to_u64(wwnn); 2161 2162 dev_printk(KERN_NOTICE, &phba->pcidev->dev, 2163 "lpfc%d: soft_wwnn set. Value will take effect upon " 2164 "setting of the soft_wwpn\n", phba->brd_no); 2165 2166 return count; 2167 } 2168 static DEVICE_ATTR(lpfc_soft_wwnn, S_IRUGO | S_IWUSR,\ 2169 lpfc_soft_wwnn_show, lpfc_soft_wwnn_store); 2170 2171 2172 static int lpfc_poll = 0; 2173 module_param(lpfc_poll, int, S_IRUGO); 2174 MODULE_PARM_DESC(lpfc_poll, "FCP ring polling mode control:" 2175 " 0 - none," 2176 " 1 - poll with interrupts enabled" 2177 " 3 - poll and disable FCP ring interrupts"); 2178 2179 static DEVICE_ATTR(lpfc_poll, S_IRUGO | S_IWUSR, 2180 lpfc_poll_show, lpfc_poll_store); 2181 2182 int lpfc_sli_mode = 0; 2183 module_param(lpfc_sli_mode, int, S_IRUGO); 2184 MODULE_PARM_DESC(lpfc_sli_mode, "SLI mode selector:" 2185 " 0 - auto (SLI-3 if supported)," 2186 " 2 - select SLI-2 even on SLI-3 capable HBAs," 2187 " 3 - select SLI-3"); 2188 2189 int lpfc_enable_npiv = 1; 2190 module_param(lpfc_enable_npiv, int, S_IRUGO); 2191 MODULE_PARM_DESC(lpfc_enable_npiv, "Enable NPIV functionality"); 2192 lpfc_param_show(enable_npiv); 2193 lpfc_param_init(enable_npiv, 1, 0, 1); 2194 static DEVICE_ATTR(lpfc_enable_npiv, S_IRUGO, lpfc_enable_npiv_show, NULL); 2195 2196 LPFC_ATTR_R(fcf_failover_policy, 1, 1, 2, 2197 "FCF Fast failover=1 Priority failover=2"); 2198 2199 int lpfc_enable_rrq; 2200 module_param(lpfc_enable_rrq, int, S_IRUGO); 2201 MODULE_PARM_DESC(lpfc_enable_rrq, "Enable RRQ functionality"); 2202 lpfc_param_show(enable_rrq); 2203 lpfc_param_init(enable_rrq, 0, 0, 1); 2204 static DEVICE_ATTR(lpfc_enable_rrq, S_IRUGO, lpfc_enable_rrq_show, NULL); 2205 2206 /* 2207 # lpfc_suppress_link_up: Bring link up at initialization 2208 # 0x0 = bring link up (issue MBX_INIT_LINK) 2209 # 0x1 = do NOT bring link up at initialization(MBX_INIT_LINK) 2210 # 0x2 = never bring up link 2211 # Default value is 0. 2212 */ 2213 LPFC_ATTR_R(suppress_link_up, LPFC_INITIALIZE_LINK, LPFC_INITIALIZE_LINK, 2214 LPFC_DELAY_INIT_LINK_INDEFINITELY, 2215 "Suppress Link Up at initialization"); 2216 /* 2217 # lpfc_cnt: Number of IOCBs allocated for ELS, CT, and ABTS 2218 # 1 - (1024) 2219 # 2 - (2048) 2220 # 3 - (3072) 2221 # 4 - (4096) 2222 # 5 - (5120) 2223 */ 2224 static ssize_t 2225 lpfc_iocb_hw_show(struct device *dev, struct device_attribute *attr, char *buf) 2226 { 2227 struct Scsi_Host *shost = class_to_shost(dev); 2228 struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba; 2229 2230 return snprintf(buf, PAGE_SIZE, "%d\n", phba->iocb_max); 2231 } 2232 2233 static DEVICE_ATTR(iocb_hw, S_IRUGO, 2234 lpfc_iocb_hw_show, NULL); 2235 static ssize_t 2236 lpfc_txq_hw_show(struct device *dev, struct device_attribute *attr, char *buf) 2237 { 2238 struct Scsi_Host *shost = class_to_shost(dev); 2239 struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba; 2240 2241 return snprintf(buf, PAGE_SIZE, "%d\n", 2242 phba->sli.ring[LPFC_ELS_RING].txq_max); 2243 } 2244 2245 static DEVICE_ATTR(txq_hw, S_IRUGO, 2246 lpfc_txq_hw_show, NULL); 2247 static ssize_t 2248 lpfc_txcmplq_hw_show(struct device *dev, struct device_attribute *attr, 2249 char *buf) 2250 { 2251 struct Scsi_Host *shost = class_to_shost(dev); 2252 struct lpfc_hba *phba = ((struct lpfc_vport *) shost->hostdata)->phba; 2253 2254 return snprintf(buf, PAGE_SIZE, "%d\n", 2255 phba->sli.ring[LPFC_ELS_RING].txcmplq_max); 2256 } 2257 2258 static DEVICE_ATTR(txcmplq_hw, S_IRUGO, 2259 lpfc_txcmplq_hw_show, NULL); 2260 2261 int lpfc_iocb_cnt = 2; 2262 module_param(lpfc_iocb_cnt, int, S_IRUGO); 2263 MODULE_PARM_DESC(lpfc_iocb_cnt, 2264 "Number of IOCBs alloc for ELS, CT, and ABTS: 1k to 5k IOCBs"); 2265 lpfc_param_show(iocb_cnt); 2266 lpfc_param_init(iocb_cnt, 2, 1, 5); 2267 static DEVICE_ATTR(lpfc_iocb_cnt, S_IRUGO, 2268 lpfc_iocb_cnt_show, NULL); 2269 2270 /* 2271 # lpfc_nodev_tmo: If set, it will hold all I/O errors on devices that disappear 2272 # until the timer expires. Value range is [0,255]. Default value is 30. 2273 */ 2274 static int lpfc_nodev_tmo = LPFC_DEF_DEVLOSS_TMO; 2275 static int lpfc_devloss_tmo = LPFC_DEF_DEVLOSS_TMO; 2276 module_param(lpfc_nodev_tmo, int, 0); 2277 MODULE_PARM_DESC(lpfc_nodev_tmo, 2278 "Seconds driver will hold I/O waiting " 2279 "for a device to come back"); 2280 2281 /** 2282 * lpfc_nodev_tmo_show - Return the hba dev loss timeout value 2283 * @dev: class converted to a Scsi_host structure. 2284 * @attr: device attribute, not used. 2285 * @buf: on return contains the dev loss timeout in decimal. 2286 * 2287 * Returns: size of formatted string. 2288 **/ 2289 static ssize_t 2290 lpfc_nodev_tmo_show(struct device *dev, struct device_attribute *attr, 2291 char *buf) 2292 { 2293 struct Scsi_Host *shost = class_to_shost(dev); 2294 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2295 2296 return snprintf(buf, PAGE_SIZE, "%d\n", vport->cfg_devloss_tmo); 2297 } 2298 2299 /** 2300 * lpfc_nodev_tmo_init - Set the hba nodev timeout value 2301 * @vport: lpfc vport structure pointer. 2302 * @val: contains the nodev timeout value. 2303 * 2304 * Description: 2305 * If the devloss tmo is already set then nodev tmo is set to devloss tmo, 2306 * a kernel error message is printed and zero is returned. 2307 * Else if val is in range then nodev tmo and devloss tmo are set to val. 2308 * Otherwise nodev tmo is set to the default value. 2309 * 2310 * Returns: 2311 * zero if already set or if val is in range 2312 * -EINVAL val out of range 2313 **/ 2314 static int 2315 lpfc_nodev_tmo_init(struct lpfc_vport *vport, int val) 2316 { 2317 if (vport->cfg_devloss_tmo != LPFC_DEF_DEVLOSS_TMO) { 2318 vport->cfg_nodev_tmo = vport->cfg_devloss_tmo; 2319 if (val != LPFC_DEF_DEVLOSS_TMO) 2320 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2321 "0407 Ignoring nodev_tmo module " 2322 "parameter because devloss_tmo is " 2323 "set.\n"); 2324 return 0; 2325 } 2326 2327 if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { 2328 vport->cfg_nodev_tmo = val; 2329 vport->cfg_devloss_tmo = val; 2330 return 0; 2331 } 2332 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2333 "0400 lpfc_nodev_tmo attribute cannot be set to" 2334 " %d, allowed range is [%d, %d]\n", 2335 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO); 2336 vport->cfg_nodev_tmo = LPFC_DEF_DEVLOSS_TMO; 2337 return -EINVAL; 2338 } 2339 2340 /** 2341 * lpfc_update_rport_devloss_tmo - Update dev loss tmo value 2342 * @vport: lpfc vport structure pointer. 2343 * 2344 * Description: 2345 * Update all the ndlp's dev loss tmo with the vport devloss tmo value. 2346 **/ 2347 static void 2348 lpfc_update_rport_devloss_tmo(struct lpfc_vport *vport) 2349 { 2350 struct Scsi_Host *shost; 2351 struct lpfc_nodelist *ndlp; 2352 2353 shost = lpfc_shost_from_vport(vport); 2354 spin_lock_irq(shost->host_lock); 2355 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) 2356 if (NLP_CHK_NODE_ACT(ndlp) && ndlp->rport) 2357 ndlp->rport->dev_loss_tmo = vport->cfg_devloss_tmo; 2358 spin_unlock_irq(shost->host_lock); 2359 } 2360 2361 /** 2362 * lpfc_nodev_tmo_set - Set the vport nodev tmo and devloss tmo values 2363 * @vport: lpfc vport structure pointer. 2364 * @val: contains the tmo value. 2365 * 2366 * Description: 2367 * If the devloss tmo is already set or the vport dev loss tmo has changed 2368 * then a kernel error message is printed and zero is returned. 2369 * Else if val is in range then nodev tmo and devloss tmo are set to val. 2370 * Otherwise nodev tmo is set to the default value. 2371 * 2372 * Returns: 2373 * zero if already set or if val is in range 2374 * -EINVAL val out of range 2375 **/ 2376 static int 2377 lpfc_nodev_tmo_set(struct lpfc_vport *vport, int val) 2378 { 2379 if (vport->dev_loss_tmo_changed || 2380 (lpfc_devloss_tmo != LPFC_DEF_DEVLOSS_TMO)) { 2381 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2382 "0401 Ignoring change to nodev_tmo " 2383 "because devloss_tmo is set.\n"); 2384 return 0; 2385 } 2386 if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { 2387 vport->cfg_nodev_tmo = val; 2388 vport->cfg_devloss_tmo = val; 2389 /* 2390 * For compat: set the fc_host dev loss so new rports 2391 * will get the value. 2392 */ 2393 fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val; 2394 lpfc_update_rport_devloss_tmo(vport); 2395 return 0; 2396 } 2397 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2398 "0403 lpfc_nodev_tmo attribute cannot be set to" 2399 "%d, allowed range is [%d, %d]\n", 2400 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO); 2401 return -EINVAL; 2402 } 2403 2404 lpfc_vport_param_store(nodev_tmo) 2405 2406 static DEVICE_ATTR(lpfc_nodev_tmo, S_IRUGO | S_IWUSR, 2407 lpfc_nodev_tmo_show, lpfc_nodev_tmo_store); 2408 2409 /* 2410 # lpfc_devloss_tmo: If set, it will hold all I/O errors on devices that 2411 # disappear until the timer expires. Value range is [0,255]. Default 2412 # value is 30. 2413 */ 2414 module_param(lpfc_devloss_tmo, int, S_IRUGO); 2415 MODULE_PARM_DESC(lpfc_devloss_tmo, 2416 "Seconds driver will hold I/O waiting " 2417 "for a device to come back"); 2418 lpfc_vport_param_init(devloss_tmo, LPFC_DEF_DEVLOSS_TMO, 2419 LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO) 2420 lpfc_vport_param_show(devloss_tmo) 2421 2422 /** 2423 * lpfc_devloss_tmo_set - Sets vport nodev tmo, devloss tmo values, changed bit 2424 * @vport: lpfc vport structure pointer. 2425 * @val: contains the tmo value. 2426 * 2427 * Description: 2428 * If val is in a valid range then set the vport nodev tmo, 2429 * devloss tmo, also set the vport dev loss tmo changed flag. 2430 * Else a kernel error message is printed. 2431 * 2432 * Returns: 2433 * zero if val is in range 2434 * -EINVAL val out of range 2435 **/ 2436 static int 2437 lpfc_devloss_tmo_set(struct lpfc_vport *vport, int val) 2438 { 2439 if (val >= LPFC_MIN_DEVLOSS_TMO && val <= LPFC_MAX_DEVLOSS_TMO) { 2440 vport->cfg_nodev_tmo = val; 2441 vport->cfg_devloss_tmo = val; 2442 vport->dev_loss_tmo_changed = 1; 2443 fc_host_dev_loss_tmo(lpfc_shost_from_vport(vport)) = val; 2444 lpfc_update_rport_devloss_tmo(vport); 2445 return 0; 2446 } 2447 2448 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2449 "0404 lpfc_devloss_tmo attribute cannot be set to" 2450 " %d, allowed range is [%d, %d]\n", 2451 val, LPFC_MIN_DEVLOSS_TMO, LPFC_MAX_DEVLOSS_TMO); 2452 return -EINVAL; 2453 } 2454 2455 lpfc_vport_param_store(devloss_tmo) 2456 static DEVICE_ATTR(lpfc_devloss_tmo, S_IRUGO | S_IWUSR, 2457 lpfc_devloss_tmo_show, lpfc_devloss_tmo_store); 2458 2459 /* 2460 # lpfc_log_verbose: Only turn this flag on if you are willing to risk being 2461 # deluged with LOTS of information. 2462 # You can set a bit mask to record specific types of verbose messages: 2463 # See lpfc_logmsh.h for definitions. 2464 */ 2465 LPFC_VPORT_ATTR_HEX_RW(log_verbose, 0x0, 0x0, 0xffffffff, 2466 "Verbose logging bit-mask"); 2467 2468 /* 2469 # lpfc_enable_da_id: This turns on the DA_ID CT command that deregisters 2470 # objects that have been registered with the nameserver after login. 2471 */ 2472 LPFC_VPORT_ATTR_R(enable_da_id, 0, 0, 1, 2473 "Deregister nameserver objects before LOGO"); 2474 2475 /* 2476 # lun_queue_depth: This parameter is used to limit the number of outstanding 2477 # commands per FCP LUN. Value range is [1,128]. Default value is 30. 2478 */ 2479 LPFC_VPORT_ATTR_R(lun_queue_depth, 30, 1, 128, 2480 "Max number of FCP commands we can queue to a specific LUN"); 2481 2482 /* 2483 # tgt_queue_depth: This parameter is used to limit the number of outstanding 2484 # commands per target port. Value range is [10,65535]. Default value is 65535. 2485 */ 2486 LPFC_VPORT_ATTR_R(tgt_queue_depth, 65535, 10, 65535, 2487 "Max number of FCP commands we can queue to a specific target port"); 2488 2489 /* 2490 # hba_queue_depth: This parameter is used to limit the number of outstanding 2491 # commands per lpfc HBA. Value range is [32,8192]. If this parameter 2492 # value is greater than the maximum number of exchanges supported by the HBA, 2493 # then maximum number of exchanges supported by the HBA is used to determine 2494 # the hba_queue_depth. 2495 */ 2496 LPFC_ATTR_R(hba_queue_depth, 8192, 32, 8192, 2497 "Max number of FCP commands we can queue to a lpfc HBA"); 2498 2499 /* 2500 # peer_port_login: This parameter allows/prevents logins 2501 # between peer ports hosted on the same physical port. 2502 # When this parameter is set 0 peer ports of same physical port 2503 # are not allowed to login to each other. 2504 # When this parameter is set 1 peer ports of same physical port 2505 # are allowed to login to each other. 2506 # Default value of this parameter is 0. 2507 */ 2508 LPFC_VPORT_ATTR_R(peer_port_login, 0, 0, 1, 2509 "Allow peer ports on the same physical port to login to each " 2510 "other."); 2511 2512 /* 2513 # restrict_login: This parameter allows/prevents logins 2514 # between Virtual Ports and remote initiators. 2515 # When this parameter is not set (0) Virtual Ports will accept PLOGIs from 2516 # other initiators and will attempt to PLOGI all remote ports. 2517 # When this parameter is set (1) Virtual Ports will reject PLOGIs from 2518 # remote ports and will not attempt to PLOGI to other initiators. 2519 # This parameter does not restrict to the physical port. 2520 # This parameter does not restrict logins to Fabric resident remote ports. 2521 # Default value of this parameter is 1. 2522 */ 2523 static int lpfc_restrict_login = 1; 2524 module_param(lpfc_restrict_login, int, S_IRUGO); 2525 MODULE_PARM_DESC(lpfc_restrict_login, 2526 "Restrict virtual ports login to remote initiators."); 2527 lpfc_vport_param_show(restrict_login); 2528 2529 /** 2530 * lpfc_restrict_login_init - Set the vport restrict login flag 2531 * @vport: lpfc vport structure pointer. 2532 * @val: contains the restrict login value. 2533 * 2534 * Description: 2535 * If val is not in a valid range then log a kernel error message and set 2536 * the vport restrict login to one. 2537 * If the port type is physical clear the restrict login flag and return. 2538 * Else set the restrict login flag to val. 2539 * 2540 * Returns: 2541 * zero if val is in range 2542 * -EINVAL val out of range 2543 **/ 2544 static int 2545 lpfc_restrict_login_init(struct lpfc_vport *vport, int val) 2546 { 2547 if (val < 0 || val > 1) { 2548 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2549 "0422 lpfc_restrict_login attribute cannot " 2550 "be set to %d, allowed range is [0, 1]\n", 2551 val); 2552 vport->cfg_restrict_login = 1; 2553 return -EINVAL; 2554 } 2555 if (vport->port_type == LPFC_PHYSICAL_PORT) { 2556 vport->cfg_restrict_login = 0; 2557 return 0; 2558 } 2559 vport->cfg_restrict_login = val; 2560 return 0; 2561 } 2562 2563 /** 2564 * lpfc_restrict_login_set - Set the vport restrict login flag 2565 * @vport: lpfc vport structure pointer. 2566 * @val: contains the restrict login value. 2567 * 2568 * Description: 2569 * If val is not in a valid range then log a kernel error message and set 2570 * the vport restrict login to one. 2571 * If the port type is physical and the val is not zero log a kernel 2572 * error message, clear the restrict login flag and return zero. 2573 * Else set the restrict login flag to val. 2574 * 2575 * Returns: 2576 * zero if val is in range 2577 * -EINVAL val out of range 2578 **/ 2579 static int 2580 lpfc_restrict_login_set(struct lpfc_vport *vport, int val) 2581 { 2582 if (val < 0 || val > 1) { 2583 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2584 "0425 lpfc_restrict_login attribute cannot " 2585 "be set to %d, allowed range is [0, 1]\n", 2586 val); 2587 vport->cfg_restrict_login = 1; 2588 return -EINVAL; 2589 } 2590 if (vport->port_type == LPFC_PHYSICAL_PORT && val != 0) { 2591 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2592 "0468 lpfc_restrict_login must be 0 for " 2593 "Physical ports.\n"); 2594 vport->cfg_restrict_login = 0; 2595 return 0; 2596 } 2597 vport->cfg_restrict_login = val; 2598 return 0; 2599 } 2600 lpfc_vport_param_store(restrict_login); 2601 static DEVICE_ATTR(lpfc_restrict_login, S_IRUGO | S_IWUSR, 2602 lpfc_restrict_login_show, lpfc_restrict_login_store); 2603 2604 /* 2605 # Some disk devices have a "select ID" or "select Target" capability. 2606 # From a protocol standpoint "select ID" usually means select the 2607 # Fibre channel "ALPA". In the FC-AL Profile there is an "informative 2608 # annex" which contains a table that maps a "select ID" (a number 2609 # between 0 and 7F) to an ALPA. By default, for compatibility with 2610 # older drivers, the lpfc driver scans this table from low ALPA to high 2611 # ALPA. 2612 # 2613 # Turning on the scan-down variable (on = 1, off = 0) will 2614 # cause the lpfc driver to use an inverted table, effectively 2615 # scanning ALPAs from high to low. Value range is [0,1]. Default value is 1. 2616 # 2617 # (Note: This "select ID" functionality is a LOOP ONLY characteristic 2618 # and will not work across a fabric. Also this parameter will take 2619 # effect only in the case when ALPA map is not available.) 2620 */ 2621 LPFC_VPORT_ATTR_R(scan_down, 1, 0, 1, 2622 "Start scanning for devices from highest ALPA to lowest"); 2623 2624 /* 2625 # lpfc_topology: link topology for init link 2626 # 0x0 = attempt loop mode then point-to-point 2627 # 0x01 = internal loopback mode 2628 # 0x02 = attempt point-to-point mode only 2629 # 0x04 = attempt loop mode only 2630 # 0x06 = attempt point-to-point mode then loop 2631 # Set point-to-point mode if you want to run as an N_Port. 2632 # Set loop mode if you want to run as an NL_Port. Value range is [0,0x6]. 2633 # Default value is 0. 2634 */ 2635 2636 /** 2637 * lpfc_topology_set - Set the adapters topology field 2638 * @phba: lpfc_hba pointer. 2639 * @val: topology value. 2640 * 2641 * Description: 2642 * If val is in a valid range then set the adapter's topology field and 2643 * issue a lip; if the lip fails reset the topology to the old value. 2644 * 2645 * If the value is not in range log a kernel error message and return an error. 2646 * 2647 * Returns: 2648 * zero if val is in range and lip okay 2649 * non-zero return value from lpfc_issue_lip() 2650 * -EINVAL val out of range 2651 **/ 2652 static ssize_t 2653 lpfc_topology_store(struct device *dev, struct device_attribute *attr, 2654 const char *buf, size_t count) 2655 { 2656 struct Scsi_Host *shost = class_to_shost(dev); 2657 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2658 struct lpfc_hba *phba = vport->phba; 2659 int val = 0; 2660 int nolip = 0; 2661 const char *val_buf = buf; 2662 int err; 2663 uint32_t prev_val; 2664 2665 if (!strncmp(buf, "nolip ", strlen("nolip "))) { 2666 nolip = 1; 2667 val_buf = &buf[strlen("nolip ")]; 2668 } 2669 2670 if (!isdigit(val_buf[0])) 2671 return -EINVAL; 2672 if (sscanf(val_buf, "%i", &val) != 1) 2673 return -EINVAL; 2674 2675 if (val >= 0 && val <= 6) { 2676 prev_val = phba->cfg_topology; 2677 phba->cfg_topology = val; 2678 if (nolip) 2679 return strlen(buf); 2680 2681 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 2682 "3054 lpfc_topology changed from %d to %d\n", 2683 prev_val, val); 2684 err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport)); 2685 if (err) { 2686 phba->cfg_topology = prev_val; 2687 return -EINVAL; 2688 } else 2689 return strlen(buf); 2690 } 2691 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2692 "%d:0467 lpfc_topology attribute cannot be set to %d, " 2693 "allowed range is [0, 6]\n", 2694 phba->brd_no, val); 2695 return -EINVAL; 2696 } 2697 static int lpfc_topology = 0; 2698 module_param(lpfc_topology, int, S_IRUGO); 2699 MODULE_PARM_DESC(lpfc_topology, "Select Fibre Channel topology"); 2700 lpfc_param_show(topology) 2701 lpfc_param_init(topology, 0, 0, 6) 2702 static DEVICE_ATTR(lpfc_topology, S_IRUGO | S_IWUSR, 2703 lpfc_topology_show, lpfc_topology_store); 2704 2705 /** 2706 * lpfc_static_vport_show: Read callback function for 2707 * lpfc_static_vport sysfs file. 2708 * @dev: Pointer to class device object. 2709 * @attr: device attribute structure. 2710 * @buf: Data buffer. 2711 * 2712 * This function is the read call back function for 2713 * lpfc_static_vport sysfs file. The lpfc_static_vport 2714 * sysfs file report the mageability of the vport. 2715 **/ 2716 static ssize_t 2717 lpfc_static_vport_show(struct device *dev, struct device_attribute *attr, 2718 char *buf) 2719 { 2720 struct Scsi_Host *shost = class_to_shost(dev); 2721 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2722 if (vport->vport_flag & STATIC_VPORT) 2723 sprintf(buf, "1\n"); 2724 else 2725 sprintf(buf, "0\n"); 2726 2727 return strlen(buf); 2728 } 2729 2730 /* 2731 * Sysfs attribute to control the statistical data collection. 2732 */ 2733 static DEVICE_ATTR(lpfc_static_vport, S_IRUGO, 2734 lpfc_static_vport_show, NULL); 2735 2736 /** 2737 * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file 2738 * @dev: Pointer to class device. 2739 * @buf: Data buffer. 2740 * @count: Size of the data buffer. 2741 * 2742 * This function get called when an user write to the lpfc_stat_data_ctrl 2743 * sysfs file. This function parse the command written to the sysfs file 2744 * and take appropriate action. These commands are used for controlling 2745 * driver statistical data collection. 2746 * Following are the command this function handles. 2747 * 2748 * setbucket <bucket_type> <base> <step> 2749 * = Set the latency buckets. 2750 * destroybucket = destroy all the buckets. 2751 * start = start data collection 2752 * stop = stop data collection 2753 * reset = reset the collected data 2754 **/ 2755 static ssize_t 2756 lpfc_stat_data_ctrl_store(struct device *dev, struct device_attribute *attr, 2757 const char *buf, size_t count) 2758 { 2759 struct Scsi_Host *shost = class_to_shost(dev); 2760 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2761 struct lpfc_hba *phba = vport->phba; 2762 #define LPFC_MAX_DATA_CTRL_LEN 1024 2763 static char bucket_data[LPFC_MAX_DATA_CTRL_LEN]; 2764 unsigned long i; 2765 char *str_ptr, *token; 2766 struct lpfc_vport **vports; 2767 struct Scsi_Host *v_shost; 2768 char *bucket_type_str, *base_str, *step_str; 2769 unsigned long base, step, bucket_type; 2770 2771 if (!strncmp(buf, "setbucket", strlen("setbucket"))) { 2772 if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1)) 2773 return -EINVAL; 2774 2775 strcpy(bucket_data, buf); 2776 str_ptr = &bucket_data[0]; 2777 /* Ignore this token - this is command token */ 2778 token = strsep(&str_ptr, "\t "); 2779 if (!token) 2780 return -EINVAL; 2781 2782 bucket_type_str = strsep(&str_ptr, "\t "); 2783 if (!bucket_type_str) 2784 return -EINVAL; 2785 2786 if (!strncmp(bucket_type_str, "linear", strlen("linear"))) 2787 bucket_type = LPFC_LINEAR_BUCKET; 2788 else if (!strncmp(bucket_type_str, "power2", strlen("power2"))) 2789 bucket_type = LPFC_POWER2_BUCKET; 2790 else 2791 return -EINVAL; 2792 2793 base_str = strsep(&str_ptr, "\t "); 2794 if (!base_str) 2795 return -EINVAL; 2796 base = simple_strtoul(base_str, NULL, 0); 2797 2798 step_str = strsep(&str_ptr, "\t "); 2799 if (!step_str) 2800 return -EINVAL; 2801 step = simple_strtoul(step_str, NULL, 0); 2802 if (!step) 2803 return -EINVAL; 2804 2805 /* Block the data collection for every vport */ 2806 vports = lpfc_create_vport_work_array(phba); 2807 if (vports == NULL) 2808 return -ENOMEM; 2809 2810 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 2811 v_shost = lpfc_shost_from_vport(vports[i]); 2812 spin_lock_irq(v_shost->host_lock); 2813 /* Block and reset data collection */ 2814 vports[i]->stat_data_blocked = 1; 2815 if (vports[i]->stat_data_enabled) 2816 lpfc_vport_reset_stat_data(vports[i]); 2817 spin_unlock_irq(v_shost->host_lock); 2818 } 2819 2820 /* Set the bucket attributes */ 2821 phba->bucket_type = bucket_type; 2822 phba->bucket_base = base; 2823 phba->bucket_step = step; 2824 2825 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 2826 v_shost = lpfc_shost_from_vport(vports[i]); 2827 2828 /* Unblock data collection */ 2829 spin_lock_irq(v_shost->host_lock); 2830 vports[i]->stat_data_blocked = 0; 2831 spin_unlock_irq(v_shost->host_lock); 2832 } 2833 lpfc_destroy_vport_work_array(phba, vports); 2834 return strlen(buf); 2835 } 2836 2837 if (!strncmp(buf, "destroybucket", strlen("destroybucket"))) { 2838 vports = lpfc_create_vport_work_array(phba); 2839 if (vports == NULL) 2840 return -ENOMEM; 2841 2842 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { 2843 v_shost = lpfc_shost_from_vport(vports[i]); 2844 spin_lock_irq(shost->host_lock); 2845 vports[i]->stat_data_blocked = 1; 2846 lpfc_free_bucket(vport); 2847 vport->stat_data_enabled = 0; 2848 vports[i]->stat_data_blocked = 0; 2849 spin_unlock_irq(shost->host_lock); 2850 } 2851 lpfc_destroy_vport_work_array(phba, vports); 2852 phba->bucket_type = LPFC_NO_BUCKET; 2853 phba->bucket_base = 0; 2854 phba->bucket_step = 0; 2855 return strlen(buf); 2856 } 2857 2858 if (!strncmp(buf, "start", strlen("start"))) { 2859 /* If no buckets configured return error */ 2860 if (phba->bucket_type == LPFC_NO_BUCKET) 2861 return -EINVAL; 2862 spin_lock_irq(shost->host_lock); 2863 if (vport->stat_data_enabled) { 2864 spin_unlock_irq(shost->host_lock); 2865 return strlen(buf); 2866 } 2867 lpfc_alloc_bucket(vport); 2868 vport->stat_data_enabled = 1; 2869 spin_unlock_irq(shost->host_lock); 2870 return strlen(buf); 2871 } 2872 2873 if (!strncmp(buf, "stop", strlen("stop"))) { 2874 spin_lock_irq(shost->host_lock); 2875 if (vport->stat_data_enabled == 0) { 2876 spin_unlock_irq(shost->host_lock); 2877 return strlen(buf); 2878 } 2879 lpfc_free_bucket(vport); 2880 vport->stat_data_enabled = 0; 2881 spin_unlock_irq(shost->host_lock); 2882 return strlen(buf); 2883 } 2884 2885 if (!strncmp(buf, "reset", strlen("reset"))) { 2886 if ((phba->bucket_type == LPFC_NO_BUCKET) 2887 || !vport->stat_data_enabled) 2888 return strlen(buf); 2889 spin_lock_irq(shost->host_lock); 2890 vport->stat_data_blocked = 1; 2891 lpfc_vport_reset_stat_data(vport); 2892 vport->stat_data_blocked = 0; 2893 spin_unlock_irq(shost->host_lock); 2894 return strlen(buf); 2895 } 2896 return -EINVAL; 2897 } 2898 2899 2900 /** 2901 * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file 2902 * @dev: Pointer to class device object. 2903 * @buf: Data buffer. 2904 * 2905 * This function is the read call back function for 2906 * lpfc_stat_data_ctrl sysfs file. This function report the 2907 * current statistical data collection state. 2908 **/ 2909 static ssize_t 2910 lpfc_stat_data_ctrl_show(struct device *dev, struct device_attribute *attr, 2911 char *buf) 2912 { 2913 struct Scsi_Host *shost = class_to_shost(dev); 2914 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2915 struct lpfc_hba *phba = vport->phba; 2916 int index = 0; 2917 int i; 2918 char *bucket_type; 2919 unsigned long bucket_value; 2920 2921 switch (phba->bucket_type) { 2922 case LPFC_LINEAR_BUCKET: 2923 bucket_type = "linear"; 2924 break; 2925 case LPFC_POWER2_BUCKET: 2926 bucket_type = "power2"; 2927 break; 2928 default: 2929 bucket_type = "No Bucket"; 2930 break; 2931 } 2932 2933 sprintf(&buf[index], "Statistical Data enabled :%d, " 2934 "blocked :%d, Bucket type :%s, Bucket base :%d," 2935 " Bucket step :%d\nLatency Ranges :", 2936 vport->stat_data_enabled, vport->stat_data_blocked, 2937 bucket_type, phba->bucket_base, phba->bucket_step); 2938 index = strlen(buf); 2939 if (phba->bucket_type != LPFC_NO_BUCKET) { 2940 for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) { 2941 if (phba->bucket_type == LPFC_LINEAR_BUCKET) 2942 bucket_value = phba->bucket_base + 2943 phba->bucket_step * i; 2944 else 2945 bucket_value = phba->bucket_base + 2946 (1 << i) * phba->bucket_step; 2947 2948 if (index + 10 > PAGE_SIZE) 2949 break; 2950 sprintf(&buf[index], "%08ld ", bucket_value); 2951 index = strlen(buf); 2952 } 2953 } 2954 sprintf(&buf[index], "\n"); 2955 return strlen(buf); 2956 } 2957 2958 /* 2959 * Sysfs attribute to control the statistical data collection. 2960 */ 2961 static DEVICE_ATTR(lpfc_stat_data_ctrl, S_IRUGO | S_IWUSR, 2962 lpfc_stat_data_ctrl_show, lpfc_stat_data_ctrl_store); 2963 2964 /* 2965 * lpfc_drvr_stat_data: sysfs attr to get driver statistical data. 2966 */ 2967 2968 /* 2969 * Each Bucket takes 11 characters and 1 new line + 17 bytes WWN 2970 * for each target. 2971 */ 2972 #define STAT_DATA_SIZE_PER_TARGET(NUM_BUCKETS) ((NUM_BUCKETS) * 11 + 18) 2973 #define MAX_STAT_DATA_SIZE_PER_TARGET \ 2974 STAT_DATA_SIZE_PER_TARGET(LPFC_MAX_BUCKET_COUNT) 2975 2976 2977 /** 2978 * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute 2979 * @filp: sysfs file 2980 * @kobj: Pointer to the kernel object 2981 * @bin_attr: Attribute object 2982 * @buff: Buffer pointer 2983 * @off: File offset 2984 * @count: Buffer size 2985 * 2986 * This function is the read call back function for lpfc_drvr_stat_data 2987 * sysfs file. This function export the statistical data to user 2988 * applications. 2989 **/ 2990 static ssize_t 2991 sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj, 2992 struct bin_attribute *bin_attr, 2993 char *buf, loff_t off, size_t count) 2994 { 2995 struct device *dev = container_of(kobj, struct device, 2996 kobj); 2997 struct Scsi_Host *shost = class_to_shost(dev); 2998 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2999 struct lpfc_hba *phba = vport->phba; 3000 int i = 0, index = 0; 3001 unsigned long nport_index; 3002 struct lpfc_nodelist *ndlp = NULL; 3003 nport_index = (unsigned long)off / 3004 MAX_STAT_DATA_SIZE_PER_TARGET; 3005 3006 if (!vport->stat_data_enabled || vport->stat_data_blocked 3007 || (phba->bucket_type == LPFC_NO_BUCKET)) 3008 return 0; 3009 3010 spin_lock_irq(shost->host_lock); 3011 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 3012 if (!NLP_CHK_NODE_ACT(ndlp) || !ndlp->lat_data) 3013 continue; 3014 3015 if (nport_index > 0) { 3016 nport_index--; 3017 continue; 3018 } 3019 3020 if ((index + MAX_STAT_DATA_SIZE_PER_TARGET) 3021 > count) 3022 break; 3023 3024 if (!ndlp->lat_data) 3025 continue; 3026 3027 /* Print the WWN */ 3028 sprintf(&buf[index], "%02x%02x%02x%02x%02x%02x%02x%02x:", 3029 ndlp->nlp_portname.u.wwn[0], 3030 ndlp->nlp_portname.u.wwn[1], 3031 ndlp->nlp_portname.u.wwn[2], 3032 ndlp->nlp_portname.u.wwn[3], 3033 ndlp->nlp_portname.u.wwn[4], 3034 ndlp->nlp_portname.u.wwn[5], 3035 ndlp->nlp_portname.u.wwn[6], 3036 ndlp->nlp_portname.u.wwn[7]); 3037 3038 index = strlen(buf); 3039 3040 for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) { 3041 sprintf(&buf[index], "%010u,", 3042 ndlp->lat_data[i].cmd_count); 3043 index = strlen(buf); 3044 } 3045 sprintf(&buf[index], "\n"); 3046 index = strlen(buf); 3047 } 3048 spin_unlock_irq(shost->host_lock); 3049 return index; 3050 } 3051 3052 static struct bin_attribute sysfs_drvr_stat_data_attr = { 3053 .attr = { 3054 .name = "lpfc_drvr_stat_data", 3055 .mode = S_IRUSR, 3056 }, 3057 .size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET, 3058 .read = sysfs_drvr_stat_data_read, 3059 .write = NULL, 3060 }; 3061 3062 /* 3063 # lpfc_link_speed: Link speed selection for initializing the Fibre Channel 3064 # connection. 3065 # Value range is [0,16]. Default value is 0. 3066 */ 3067 /** 3068 * lpfc_link_speed_set - Set the adapters link speed 3069 * @phba: lpfc_hba pointer. 3070 * @val: link speed value. 3071 * 3072 * Description: 3073 * If val is in a valid range then set the adapter's link speed field and 3074 * issue a lip; if the lip fails reset the link speed to the old value. 3075 * 3076 * Notes: 3077 * If the value is not in range log a kernel error message and return an error. 3078 * 3079 * Returns: 3080 * zero if val is in range and lip okay. 3081 * non-zero return value from lpfc_issue_lip() 3082 * -EINVAL val out of range 3083 **/ 3084 static ssize_t 3085 lpfc_link_speed_store(struct device *dev, struct device_attribute *attr, 3086 const char *buf, size_t count) 3087 { 3088 struct Scsi_Host *shost = class_to_shost(dev); 3089 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 3090 struct lpfc_hba *phba = vport->phba; 3091 int val = LPFC_USER_LINK_SPEED_AUTO; 3092 int nolip = 0; 3093 const char *val_buf = buf; 3094 int err; 3095 uint32_t prev_val; 3096 3097 if (!strncmp(buf, "nolip ", strlen("nolip "))) { 3098 nolip = 1; 3099 val_buf = &buf[strlen("nolip ")]; 3100 } 3101 3102 if (!isdigit(val_buf[0])) 3103 return -EINVAL; 3104 if (sscanf(val_buf, "%i", &val) != 1) 3105 return -EINVAL; 3106 3107 lpfc_printf_vlog(vport, KERN_ERR, LOG_INIT, 3108 "3055 lpfc_link_speed changed from %d to %d %s\n", 3109 phba->cfg_link_speed, val, nolip ? "(nolip)" : "(lip)"); 3110 3111 if (((val == LPFC_USER_LINK_SPEED_1G) && !(phba->lmt & LMT_1Gb)) || 3112 ((val == LPFC_USER_LINK_SPEED_2G) && !(phba->lmt & LMT_2Gb)) || 3113 ((val == LPFC_USER_LINK_SPEED_4G) && !(phba->lmt & LMT_4Gb)) || 3114 ((val == LPFC_USER_LINK_SPEED_8G) && !(phba->lmt & LMT_8Gb)) || 3115 ((val == LPFC_USER_LINK_SPEED_10G) && !(phba->lmt & LMT_10Gb)) || 3116 ((val == LPFC_USER_LINK_SPEED_16G) && !(phba->lmt & LMT_16Gb))) { 3117 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3118 "2879 lpfc_link_speed attribute cannot be set " 3119 "to %d. Speed is not supported by this port.\n", 3120 val); 3121 return -EINVAL; 3122 } 3123 if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) && 3124 (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) { 3125 prev_val = phba->cfg_link_speed; 3126 phba->cfg_link_speed = val; 3127 if (nolip) 3128 return strlen(buf); 3129 3130 err = lpfc_issue_lip(lpfc_shost_from_vport(phba->pport)); 3131 if (err) { 3132 phba->cfg_link_speed = prev_val; 3133 return -EINVAL; 3134 } else 3135 return strlen(buf); 3136 } 3137 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3138 "0469 lpfc_link_speed attribute cannot be set to %d, " 3139 "allowed values are ["LPFC_LINK_SPEED_STRING"]\n", val); 3140 return -EINVAL; 3141 } 3142 3143 static int lpfc_link_speed = 0; 3144 module_param(lpfc_link_speed, int, S_IRUGO); 3145 MODULE_PARM_DESC(lpfc_link_speed, "Select link speed"); 3146 lpfc_param_show(link_speed) 3147 3148 /** 3149 * lpfc_link_speed_init - Set the adapters link speed 3150 * @phba: lpfc_hba pointer. 3151 * @val: link speed value. 3152 * 3153 * Description: 3154 * If val is in a valid range then set the adapter's link speed field. 3155 * 3156 * Notes: 3157 * If the value is not in range log a kernel error message, clear the link 3158 * speed and return an error. 3159 * 3160 * Returns: 3161 * zero if val saved. 3162 * -EINVAL val out of range 3163 **/ 3164 static int 3165 lpfc_link_speed_init(struct lpfc_hba *phba, int val) 3166 { 3167 if ((val >= 0) && (val <= LPFC_USER_LINK_SPEED_MAX) && 3168 (LPFC_USER_LINK_SPEED_BITMAP & (1 << val))) { 3169 phba->cfg_link_speed = val; 3170 return 0; 3171 } 3172 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3173 "0405 lpfc_link_speed attribute cannot " 3174 "be set to %d, allowed values are " 3175 "["LPFC_LINK_SPEED_STRING"]\n", val); 3176 phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO; 3177 return -EINVAL; 3178 } 3179 3180 static DEVICE_ATTR(lpfc_link_speed, S_IRUGO | S_IWUSR, 3181 lpfc_link_speed_show, lpfc_link_speed_store); 3182 3183 /* 3184 # lpfc_aer_support: Support PCIe device Advanced Error Reporting (AER) 3185 # 0 = aer disabled or not supported 3186 # 1 = aer supported and enabled (default) 3187 # Value range is [0,1]. Default value is 1. 3188 */ 3189 3190 /** 3191 * lpfc_aer_support_store - Set the adapter for aer support 3192 * 3193 * @dev: class device that is converted into a Scsi_host. 3194 * @attr: device attribute, not used. 3195 * @buf: containing enable or disable aer flag. 3196 * @count: unused variable. 3197 * 3198 * Description: 3199 * If the val is 1 and currently the device's AER capability was not 3200 * enabled, invoke the kernel's enable AER helper routine, trying to 3201 * enable the device's AER capability. If the helper routine enabling 3202 * AER returns success, update the device's cfg_aer_support flag to 3203 * indicate AER is supported by the device; otherwise, if the device 3204 * AER capability is already enabled to support AER, then do nothing. 3205 * 3206 * If the val is 0 and currently the device's AER support was enabled, 3207 * invoke the kernel's disable AER helper routine. After that, update 3208 * the device's cfg_aer_support flag to indicate AER is not supported 3209 * by the device; otherwise, if the device AER capability is already 3210 * disabled from supporting AER, then do nothing. 3211 * 3212 * Returns: 3213 * length of the buf on success if val is in range the intended mode 3214 * is supported. 3215 * -EINVAL if val out of range or intended mode is not supported. 3216 **/ 3217 static ssize_t 3218 lpfc_aer_support_store(struct device *dev, struct device_attribute *attr, 3219 const char *buf, size_t count) 3220 { 3221 struct Scsi_Host *shost = class_to_shost(dev); 3222 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata; 3223 struct lpfc_hba *phba = vport->phba; 3224 int val = 0, rc = -EINVAL; 3225 3226 if (!isdigit(buf[0])) 3227 return -EINVAL; 3228 if (sscanf(buf, "%i", &val) != 1) 3229 return -EINVAL; 3230 3231 switch (val) { 3232 case 0: 3233 if (phba->hba_flag & HBA_AER_ENABLED) { 3234 rc = pci_disable_pcie_error_reporting(phba->pcidev); 3235 if (!rc) { 3236 spin_lock_irq(&phba->hbalock); 3237 phba->hba_flag &= ~HBA_AER_ENABLED; 3238 spin_unlock_irq(&phba->hbalock); 3239 phba->cfg_aer_support = 0; 3240 rc = strlen(buf); 3241 } else 3242 rc = -EPERM; 3243 } else { 3244 phba->cfg_aer_support = 0; 3245 rc = strlen(buf); 3246 } 3247 break; 3248 case 1: 3249 if (!(phba->hba_flag & HBA_AER_ENABLED)) { 3250 rc = pci_enable_pcie_error_reporting(phba->pcidev); 3251 if (!rc) { 3252 spin_lock_irq(&phba->hbalock); 3253 phba->hba_flag |= HBA_AER_ENABLED; 3254 spin_unlock_irq(&phba->hbalock); 3255 phba->cfg_aer_support = 1; 3256 rc = strlen(buf); 3257 } else 3258 rc = -EPERM; 3259 } else { 3260 phba->cfg_aer_support = 1; 3261 rc = strlen(buf); 3262 } 3263 break; 3264 default: 3265 rc = -EINVAL; 3266 break; 3267 } 3268 return rc; 3269 } 3270 3271 static int lpfc_aer_support = 1; 3272 module_param(lpfc_aer_support, int, S_IRUGO); 3273 MODULE_PARM_DESC(lpfc_aer_support, "Enable PCIe device AER support"); 3274 lpfc_param_show(aer_support) 3275 3276 /** 3277 * lpfc_aer_support_init - Set the initial adapters aer support flag 3278 * @phba: lpfc_hba pointer. 3279 * @val: enable aer or disable aer flag. 3280 * 3281 * Description: 3282 * If val is in a valid range [0,1], then set the adapter's initial 3283 * cfg_aer_support field. It will be up to the driver's probe_one 3284 * routine to determine whether the device's AER support can be set 3285 * or not. 3286 * 3287 * Notes: 3288 * If the value is not in range log a kernel error message, and 3289 * choose the default value of setting AER support and return. 3290 * 3291 * Returns: 3292 * zero if val saved. 3293 * -EINVAL val out of range 3294 **/ 3295 static int 3296 lpfc_aer_support_init(struct lpfc_hba *phba, int val) 3297 { 3298 if (val == 0 || val == 1) { 3299 phba->cfg_aer_support = val; 3300 return 0; 3301 } 3302 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3303 "2712 lpfc_aer_support attribute value %d out " 3304 "of range, allowed values are 0|1, setting it " 3305 "to default value of 1\n", val); 3306 /* By default, try to enable AER on a device */ 3307 phba->cfg_aer_support = 1; 3308 return -EINVAL; 3309 } 3310 3311 static DEVICE_ATTR(lpfc_aer_support, S_IRUGO | S_IWUSR, 3312 lpfc_aer_support_show, lpfc_aer_support_store); 3313 3314 /** 3315 * lpfc_aer_cleanup_state - Clean up aer state to the aer enabled device 3316 * @dev: class device that is converted into a Scsi_host. 3317 * @attr: device attribute, not used. 3318 * @buf: containing flag 1 for aer cleanup state. 3319 * @count: unused variable. 3320 * 3321 * Description: 3322 * If the @buf contains 1 and the device currently has the AER support 3323 * enabled, then invokes the kernel AER helper routine 3324 * pci_cleanup_aer_uncorrect_error_status to clean up the uncorrectable 3325 * error status register. 3326 * 3327 * Notes: 3328 * 3329 * Returns: 3330 * -EINVAL if the buf does not contain the 1 or the device is not currently 3331 * enabled with the AER support. 3332 **/ 3333 static ssize_t 3334 lpfc_aer_cleanup_state(struct device *dev, struct device_attribute *attr, 3335 const char *buf, size_t count) 3336 { 3337 struct Scsi_Host *shost = class_to_shost(dev); 3338 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 3339 struct lpfc_hba *phba = vport->phba; 3340 int val, rc = -1; 3341 3342 if (!isdigit(buf[0])) 3343 return -EINVAL; 3344 if (sscanf(buf, "%i", &val) != 1) 3345 return -EINVAL; 3346 if (val != 1) 3347 return -EINVAL; 3348 3349 if (phba->hba_flag & HBA_AER_ENABLED) 3350 rc = pci_cleanup_aer_uncorrect_error_status(phba->pcidev); 3351 3352 if (rc == 0) 3353 return strlen(buf); 3354 else 3355 return -EPERM; 3356 } 3357 3358 static DEVICE_ATTR(lpfc_aer_state_cleanup, S_IWUSR, NULL, 3359 lpfc_aer_cleanup_state); 3360 3361 /** 3362 * lpfc_sriov_nr_virtfn_store - Enable the adapter for sr-iov virtual functions 3363 * 3364 * @dev: class device that is converted into a Scsi_host. 3365 * @attr: device attribute, not used. 3366 * @buf: containing the string the number of vfs to be enabled. 3367 * @count: unused variable. 3368 * 3369 * Description: 3370 * When this api is called either through user sysfs, the driver shall 3371 * try to enable or disable SR-IOV virtual functions according to the 3372 * following: 3373 * 3374 * If zero virtual function has been enabled to the physical function, 3375 * the driver shall invoke the pci enable virtual function api trying 3376 * to enable the virtual functions. If the nr_vfn provided is greater 3377 * than the maximum supported, the maximum virtual function number will 3378 * be used for invoking the api; otherwise, the nr_vfn provided shall 3379 * be used for invoking the api. If the api call returned success, the 3380 * actual number of virtual functions enabled will be set to the driver 3381 * cfg_sriov_nr_virtfn; otherwise, -EINVAL shall be returned and driver 3382 * cfg_sriov_nr_virtfn remains zero. 3383 * 3384 * If none-zero virtual functions have already been enabled to the 3385 * physical function, as reflected by the driver's cfg_sriov_nr_virtfn, 3386 * -EINVAL will be returned and the driver does nothing; 3387 * 3388 * If the nr_vfn provided is zero and none-zero virtual functions have 3389 * been enabled, as indicated by the driver's cfg_sriov_nr_virtfn, the 3390 * disabling virtual function api shall be invoded to disable all the 3391 * virtual functions and driver's cfg_sriov_nr_virtfn shall be set to 3392 * zero. Otherwise, if zero virtual function has been enabled, do 3393 * nothing. 3394 * 3395 * Returns: 3396 * length of the buf on success if val is in range the intended mode 3397 * is supported. 3398 * -EINVAL if val out of range or intended mode is not supported. 3399 **/ 3400 static ssize_t 3401 lpfc_sriov_nr_virtfn_store(struct device *dev, struct device_attribute *attr, 3402 const char *buf, size_t count) 3403 { 3404 struct Scsi_Host *shost = class_to_shost(dev); 3405 struct lpfc_vport *vport = (struct lpfc_vport *)shost->hostdata; 3406 struct lpfc_hba *phba = vport->phba; 3407 struct pci_dev *pdev = phba->pcidev; 3408 int val = 0, rc = -EINVAL; 3409 3410 /* Sanity check on user data */ 3411 if (!isdigit(buf[0])) 3412 return -EINVAL; 3413 if (sscanf(buf, "%i", &val) != 1) 3414 return -EINVAL; 3415 if (val < 0) 3416 return -EINVAL; 3417 3418 /* Request disabling virtual functions */ 3419 if (val == 0) { 3420 if (phba->cfg_sriov_nr_virtfn > 0) { 3421 pci_disable_sriov(pdev); 3422 phba->cfg_sriov_nr_virtfn = 0; 3423 } 3424 return strlen(buf); 3425 } 3426 3427 /* Request enabling virtual functions */ 3428 if (phba->cfg_sriov_nr_virtfn > 0) { 3429 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3430 "3018 There are %d virtual functions " 3431 "enabled on physical function.\n", 3432 phba->cfg_sriov_nr_virtfn); 3433 return -EEXIST; 3434 } 3435 3436 if (val <= LPFC_MAX_VFN_PER_PFN) 3437 phba->cfg_sriov_nr_virtfn = val; 3438 else { 3439 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3440 "3019 Enabling %d virtual functions is not " 3441 "allowed.\n", val); 3442 return -EINVAL; 3443 } 3444 3445 rc = lpfc_sli_probe_sriov_nr_virtfn(phba, phba->cfg_sriov_nr_virtfn); 3446 if (rc) { 3447 phba->cfg_sriov_nr_virtfn = 0; 3448 rc = -EPERM; 3449 } else 3450 rc = strlen(buf); 3451 3452 return rc; 3453 } 3454 3455 static int lpfc_sriov_nr_virtfn = LPFC_DEF_VFN_PER_PFN; 3456 module_param(lpfc_sriov_nr_virtfn, int, S_IRUGO|S_IWUSR); 3457 MODULE_PARM_DESC(lpfc_sriov_nr_virtfn, "Enable PCIe device SR-IOV virtual fn"); 3458 lpfc_param_show(sriov_nr_virtfn) 3459 3460 /** 3461 * lpfc_sriov_nr_virtfn_init - Set the initial sr-iov virtual function enable 3462 * @phba: lpfc_hba pointer. 3463 * @val: link speed value. 3464 * 3465 * Description: 3466 * If val is in a valid range [0,255], then set the adapter's initial 3467 * cfg_sriov_nr_virtfn field. If it's greater than the maximum, the maximum 3468 * number shall be used instead. It will be up to the driver's probe_one 3469 * routine to determine whether the device's SR-IOV is supported or not. 3470 * 3471 * Returns: 3472 * zero if val saved. 3473 * -EINVAL val out of range 3474 **/ 3475 static int 3476 lpfc_sriov_nr_virtfn_init(struct lpfc_hba *phba, int val) 3477 { 3478 if (val >= 0 && val <= LPFC_MAX_VFN_PER_PFN) { 3479 phba->cfg_sriov_nr_virtfn = val; 3480 return 0; 3481 } 3482 3483 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3484 "3017 Enabling %d virtual functions is not " 3485 "allowed.\n", val); 3486 return -EINVAL; 3487 } 3488 static DEVICE_ATTR(lpfc_sriov_nr_virtfn, S_IRUGO | S_IWUSR, 3489 lpfc_sriov_nr_virtfn_show, lpfc_sriov_nr_virtfn_store); 3490 3491 /* 3492 # lpfc_fcp_class: Determines FC class to use for the FCP protocol. 3493 # Value range is [2,3]. Default value is 3. 3494 */ 3495 LPFC_VPORT_ATTR_R(fcp_class, 3, 2, 3, 3496 "Select Fibre Channel class of service for FCP sequences"); 3497 3498 /* 3499 # lpfc_use_adisc: Use ADISC for FCP rediscovery instead of PLOGI. Value range 3500 # is [0,1]. Default value is 0. 3501 */ 3502 LPFC_VPORT_ATTR_RW(use_adisc, 0, 0, 1, 3503 "Use ADISC on rediscovery to authenticate FCP devices"); 3504 3505 /* 3506 # lpfc_max_scsicmpl_time: Use scsi command completion time to control I/O queue 3507 # depth. Default value is 0. When the value of this parameter is zero the 3508 # SCSI command completion time is not used for controlling I/O queue depth. When 3509 # the parameter is set to a non-zero value, the I/O queue depth is controlled 3510 # to limit the I/O completion time to the parameter value. 3511 # The value is set in milliseconds. 3512 */ 3513 static int lpfc_max_scsicmpl_time; 3514 module_param(lpfc_max_scsicmpl_time, int, S_IRUGO); 3515 MODULE_PARM_DESC(lpfc_max_scsicmpl_time, 3516 "Use command completion time to control queue depth"); 3517 lpfc_vport_param_show(max_scsicmpl_time); 3518 lpfc_vport_param_init(max_scsicmpl_time, 0, 0, 60000); 3519 static int 3520 lpfc_max_scsicmpl_time_set(struct lpfc_vport *vport, int val) 3521 { 3522 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 3523 struct lpfc_nodelist *ndlp, *next_ndlp; 3524 3525 if (val == vport->cfg_max_scsicmpl_time) 3526 return 0; 3527 if ((val < 0) || (val > 60000)) 3528 return -EINVAL; 3529 vport->cfg_max_scsicmpl_time = val; 3530 3531 spin_lock_irq(shost->host_lock); 3532 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 3533 if (!NLP_CHK_NODE_ACT(ndlp)) 3534 continue; 3535 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 3536 continue; 3537 ndlp->cmd_qdepth = vport->cfg_tgt_queue_depth; 3538 } 3539 spin_unlock_irq(shost->host_lock); 3540 return 0; 3541 } 3542 lpfc_vport_param_store(max_scsicmpl_time); 3543 static DEVICE_ATTR(lpfc_max_scsicmpl_time, S_IRUGO | S_IWUSR, 3544 lpfc_max_scsicmpl_time_show, 3545 lpfc_max_scsicmpl_time_store); 3546 3547 /* 3548 # lpfc_ack0: Use ACK0, instead of ACK1 for class 2 acknowledgement. Value 3549 # range is [0,1]. Default value is 0. 3550 */ 3551 LPFC_ATTR_R(ack0, 0, 0, 1, "Enable ACK0 support"); 3552 3553 /* 3554 # lpfc_cr_delay & lpfc_cr_count: Default values for I/O colaesing 3555 # cr_delay (msec) or cr_count outstanding commands. cr_delay can take 3556 # value [0,63]. cr_count can take value [1,255]. Default value of cr_delay 3557 # is 0. Default value of cr_count is 1. The cr_count feature is disabled if 3558 # cr_delay is set to 0. 3559 */ 3560 LPFC_ATTR_RW(cr_delay, 0, 0, 63, "A count of milliseconds after which an " 3561 "interrupt response is generated"); 3562 3563 LPFC_ATTR_RW(cr_count, 1, 1, 255, "A count of I/O completions after which an " 3564 "interrupt response is generated"); 3565 3566 /* 3567 # lpfc_multi_ring_support: Determines how many rings to spread available 3568 # cmd/rsp IOCB entries across. 3569 # Value range is [1,2]. Default value is 1. 3570 */ 3571 LPFC_ATTR_R(multi_ring_support, 1, 1, 2, "Determines number of primary " 3572 "SLI rings to spread IOCB entries across"); 3573 3574 /* 3575 # lpfc_multi_ring_rctl: If lpfc_multi_ring_support is enabled, this 3576 # identifies what rctl value to configure the additional ring for. 3577 # Value range is [1,0xff]. Default value is 4 (Unsolicated Data). 3578 */ 3579 LPFC_ATTR_R(multi_ring_rctl, FC_RCTL_DD_UNSOL_DATA, 1, 3580 255, "Identifies RCTL for additional ring configuration"); 3581 3582 /* 3583 # lpfc_multi_ring_type: If lpfc_multi_ring_support is enabled, this 3584 # identifies what type value to configure the additional ring for. 3585 # Value range is [1,0xff]. Default value is 5 (LLC/SNAP). 3586 */ 3587 LPFC_ATTR_R(multi_ring_type, FC_TYPE_IP, 1, 3588 255, "Identifies TYPE for additional ring configuration"); 3589 3590 /* 3591 # lpfc_fdmi_on: controls FDMI support. 3592 # 0 = no FDMI support 3593 # 1 = support FDMI without attribute of hostname 3594 # 2 = support FDMI with attribute of hostname 3595 # Value range [0,2]. Default value is 0. 3596 */ 3597 LPFC_VPORT_ATTR_RW(fdmi_on, 0, 0, 2, "Enable FDMI support"); 3598 3599 /* 3600 # Specifies the maximum number of ELS cmds we can have outstanding (for 3601 # discovery). Value range is [1,64]. Default value = 32. 3602 */ 3603 LPFC_VPORT_ATTR(discovery_threads, 32, 1, 64, "Maximum number of ELS commands " 3604 "during discovery"); 3605 3606 /* 3607 # lpfc_max_luns: maximum allowed LUN. 3608 # Value range is [0,65535]. Default value is 255. 3609 # NOTE: The SCSI layer might probe all allowed LUN on some old targets. 3610 */ 3611 LPFC_VPORT_ATTR_R(max_luns, 255, 0, 65535, "Maximum allowed LUN"); 3612 3613 /* 3614 # lpfc_poll_tmo: .Milliseconds driver will wait between polling FCP ring. 3615 # Value range is [1,255], default value is 10. 3616 */ 3617 LPFC_ATTR_RW(poll_tmo, 10, 1, 255, 3618 "Milliseconds driver will wait between polling FCP ring"); 3619 3620 /* 3621 # lpfc_use_msi: Use MSI (Message Signaled Interrupts) in systems that 3622 # support this feature 3623 # 0 = MSI disabled 3624 # 1 = MSI enabled 3625 # 2 = MSI-X enabled (default) 3626 # Value range is [0,2]. Default value is 2. 3627 */ 3628 LPFC_ATTR_R(use_msi, 2, 0, 2, "Use Message Signaled Interrupts (1) or " 3629 "MSI-X (2), if possible"); 3630 3631 /* 3632 # lpfc_fcp_imax: Set the maximum number of fast-path FCP interrupts per second 3633 # 3634 # Value range is [636,651042]. Default value is 10000. 3635 */ 3636 LPFC_ATTR_R(fcp_imax, LPFC_FP_DEF_IMAX, LPFC_MIM_IMAX, LPFC_DMULT_CONST, 3637 "Set the maximum number of fast-path FCP interrupts per second"); 3638 3639 /* 3640 # lpfc_fcp_wq_count: Set the number of fast-path FCP work queues 3641 # 3642 # Value range is [1,31]. Default value is 4. 3643 */ 3644 LPFC_ATTR_R(fcp_wq_count, LPFC_FP_WQN_DEF, LPFC_FP_WQN_MIN, LPFC_FP_WQN_MAX, 3645 "Set the number of fast-path FCP work queues, if possible"); 3646 3647 /* 3648 # lpfc_fcp_eq_count: Set the number of fast-path FCP event queues 3649 # 3650 # Value range is [1,7]. Default value is 1. 3651 */ 3652 LPFC_ATTR_R(fcp_eq_count, LPFC_FP_EQN_DEF, LPFC_FP_EQN_MIN, LPFC_FP_EQN_MAX, 3653 "Set the number of fast-path FCP event queues, if possible"); 3654 3655 /* 3656 # lpfc_enable_hba_reset: Allow or prevent HBA resets to the hardware. 3657 # 0 = HBA resets disabled 3658 # 1 = HBA resets enabled (default) 3659 # Value range is [0,1]. Default value is 1. 3660 */ 3661 LPFC_ATTR_R(enable_hba_reset, 1, 0, 1, "Enable HBA resets from the driver."); 3662 3663 /* 3664 # lpfc_enable_hba_heartbeat: Disable HBA heartbeat timer.. 3665 # 0 = HBA Heartbeat disabled 3666 # 1 = HBA Heartbeat enabled (default) 3667 # Value range is [0,1]. Default value is 1. 3668 */ 3669 LPFC_ATTR_R(enable_hba_heartbeat, 0, 0, 1, "Enable HBA Heartbeat."); 3670 3671 /* 3672 # lpfc_enable_bg: Enable BlockGuard (Emulex's Implementation of T10-DIF) 3673 # 0 = BlockGuard disabled (default) 3674 # 1 = BlockGuard enabled 3675 # Value range is [0,1]. Default value is 0. 3676 */ 3677 LPFC_ATTR_R(enable_bg, 0, 0, 1, "Enable BlockGuard Support"); 3678 3679 /* 3680 # lpfc_prot_mask: i 3681 # - Bit mask of host protection capabilities used to register with the 3682 # SCSI mid-layer 3683 # - Only meaningful if BG is turned on (lpfc_enable_bg=1). 3684 # - Allows you to ultimately specify which profiles to use 3685 # - Default will result in registering capabilities for all profiles. 3686 # 3687 */ 3688 unsigned int lpfc_prot_mask = SHOST_DIF_TYPE1_PROTECTION | 3689 SHOST_DIX_TYPE0_PROTECTION | 3690 SHOST_DIX_TYPE1_PROTECTION; 3691 3692 module_param(lpfc_prot_mask, uint, S_IRUGO); 3693 MODULE_PARM_DESC(lpfc_prot_mask, "host protection mask"); 3694 3695 /* 3696 # lpfc_prot_guard: i 3697 # - Bit mask of protection guard types to register with the SCSI mid-layer 3698 # - Guard types are currently either 1) IP checksum 2) T10-DIF CRC 3699 # - Allows you to ultimately specify which profiles to use 3700 # - Default will result in registering capabilities for all guard types 3701 # 3702 */ 3703 unsigned char lpfc_prot_guard = SHOST_DIX_GUARD_IP; 3704 module_param(lpfc_prot_guard, byte, S_IRUGO); 3705 MODULE_PARM_DESC(lpfc_prot_guard, "host protection guard type"); 3706 3707 /* 3708 * Delay initial NPort discovery when Clean Address bit is cleared in 3709 * FLOGI/FDISC accept and FCID/Fabric name/Fabric portname is changed. 3710 * This parameter can have value 0 or 1. 3711 * When this parameter is set to 0, no delay is added to the initial 3712 * discovery. 3713 * When this parameter is set to non-zero value, initial Nport discovery is 3714 * delayed by ra_tov seconds when Clean Address bit is cleared in FLOGI/FDISC 3715 * accept and FCID/Fabric name/Fabric portname is changed. 3716 * Driver always delay Nport discovery for subsequent FLOGI/FDISC completion 3717 * when Clean Address bit is cleared in FLOGI/FDISC 3718 * accept and FCID/Fabric name/Fabric portname is changed. 3719 * Default value is 0. 3720 */ 3721 int lpfc_delay_discovery; 3722 module_param(lpfc_delay_discovery, int, S_IRUGO); 3723 MODULE_PARM_DESC(lpfc_delay_discovery, 3724 "Delay NPort discovery when Clean Address bit is cleared. " 3725 "Allowed values: 0,1."); 3726 3727 /* 3728 * lpfc_sg_seg_cnt - Initial Maximum DMA Segment Count 3729 * This value can be set to values between 64 and 256. The default value is 3730 * 64, but may be increased to allow for larger Max I/O sizes. The scsi layer 3731 * will be allowed to request I/Os of sizes up to (MAX_SEG_COUNT * SEG_SIZE). 3732 */ 3733 LPFC_ATTR_R(sg_seg_cnt, LPFC_DEFAULT_SG_SEG_CNT, LPFC_DEFAULT_SG_SEG_CNT, 3734 LPFC_MAX_SG_SEG_CNT, "Max Scatter Gather Segment Count"); 3735 3736 LPFC_ATTR_R(prot_sg_seg_cnt, LPFC_DEFAULT_PROT_SG_SEG_CNT, 3737 LPFC_DEFAULT_PROT_SG_SEG_CNT, LPFC_MAX_PROT_SG_SEG_CNT, 3738 "Max Protection Scatter Gather Segment Count"); 3739 3740 struct device_attribute *lpfc_hba_attrs[] = { 3741 &dev_attr_bg_info, 3742 &dev_attr_bg_guard_err, 3743 &dev_attr_bg_apptag_err, 3744 &dev_attr_bg_reftag_err, 3745 &dev_attr_info, 3746 &dev_attr_serialnum, 3747 &dev_attr_modeldesc, 3748 &dev_attr_modelname, 3749 &dev_attr_programtype, 3750 &dev_attr_portnum, 3751 &dev_attr_fwrev, 3752 &dev_attr_hdw, 3753 &dev_attr_option_rom_version, 3754 &dev_attr_link_state, 3755 &dev_attr_num_discovered_ports, 3756 &dev_attr_menlo_mgmt_mode, 3757 &dev_attr_lpfc_drvr_version, 3758 &dev_attr_lpfc_enable_fip, 3759 &dev_attr_lpfc_temp_sensor, 3760 &dev_attr_lpfc_log_verbose, 3761 &dev_attr_lpfc_lun_queue_depth, 3762 &dev_attr_lpfc_tgt_queue_depth, 3763 &dev_attr_lpfc_hba_queue_depth, 3764 &dev_attr_lpfc_peer_port_login, 3765 &dev_attr_lpfc_nodev_tmo, 3766 &dev_attr_lpfc_devloss_tmo, 3767 &dev_attr_lpfc_fcp_class, 3768 &dev_attr_lpfc_use_adisc, 3769 &dev_attr_lpfc_ack0, 3770 &dev_attr_lpfc_topology, 3771 &dev_attr_lpfc_scan_down, 3772 &dev_attr_lpfc_link_speed, 3773 &dev_attr_lpfc_cr_delay, 3774 &dev_attr_lpfc_cr_count, 3775 &dev_attr_lpfc_multi_ring_support, 3776 &dev_attr_lpfc_multi_ring_rctl, 3777 &dev_attr_lpfc_multi_ring_type, 3778 &dev_attr_lpfc_fdmi_on, 3779 &dev_attr_lpfc_max_luns, 3780 &dev_attr_lpfc_enable_npiv, 3781 &dev_attr_lpfc_fcf_failover_policy, 3782 &dev_attr_lpfc_enable_rrq, 3783 &dev_attr_nport_evt_cnt, 3784 &dev_attr_board_mode, 3785 &dev_attr_max_vpi, 3786 &dev_attr_used_vpi, 3787 &dev_attr_max_rpi, 3788 &dev_attr_used_rpi, 3789 &dev_attr_max_xri, 3790 &dev_attr_used_xri, 3791 &dev_attr_npiv_info, 3792 &dev_attr_issue_reset, 3793 &dev_attr_lpfc_poll, 3794 &dev_attr_lpfc_poll_tmo, 3795 &dev_attr_lpfc_use_msi, 3796 &dev_attr_lpfc_fcp_imax, 3797 &dev_attr_lpfc_fcp_wq_count, 3798 &dev_attr_lpfc_fcp_eq_count, 3799 &dev_attr_lpfc_enable_bg, 3800 &dev_attr_lpfc_soft_wwnn, 3801 &dev_attr_lpfc_soft_wwpn, 3802 &dev_attr_lpfc_soft_wwn_enable, 3803 &dev_attr_lpfc_enable_hba_reset, 3804 &dev_attr_lpfc_enable_hba_heartbeat, 3805 &dev_attr_lpfc_sg_seg_cnt, 3806 &dev_attr_lpfc_max_scsicmpl_time, 3807 &dev_attr_lpfc_stat_data_ctrl, 3808 &dev_attr_lpfc_prot_sg_seg_cnt, 3809 &dev_attr_lpfc_aer_support, 3810 &dev_attr_lpfc_aer_state_cleanup, 3811 &dev_attr_lpfc_sriov_nr_virtfn, 3812 &dev_attr_lpfc_suppress_link_up, 3813 &dev_attr_lpfc_iocb_cnt, 3814 &dev_attr_iocb_hw, 3815 &dev_attr_txq_hw, 3816 &dev_attr_txcmplq_hw, 3817 &dev_attr_lpfc_fips_level, 3818 &dev_attr_lpfc_fips_rev, 3819 &dev_attr_lpfc_dss, 3820 &dev_attr_lpfc_sriov_hw_max_virtfn, 3821 NULL, 3822 }; 3823 3824 struct device_attribute *lpfc_vport_attrs[] = { 3825 &dev_attr_info, 3826 &dev_attr_link_state, 3827 &dev_attr_num_discovered_ports, 3828 &dev_attr_lpfc_drvr_version, 3829 &dev_attr_lpfc_log_verbose, 3830 &dev_attr_lpfc_lun_queue_depth, 3831 &dev_attr_lpfc_tgt_queue_depth, 3832 &dev_attr_lpfc_nodev_tmo, 3833 &dev_attr_lpfc_devloss_tmo, 3834 &dev_attr_lpfc_hba_queue_depth, 3835 &dev_attr_lpfc_peer_port_login, 3836 &dev_attr_lpfc_restrict_login, 3837 &dev_attr_lpfc_fcp_class, 3838 &dev_attr_lpfc_use_adisc, 3839 &dev_attr_lpfc_fdmi_on, 3840 &dev_attr_lpfc_max_luns, 3841 &dev_attr_nport_evt_cnt, 3842 &dev_attr_npiv_info, 3843 &dev_attr_lpfc_enable_da_id, 3844 &dev_attr_lpfc_max_scsicmpl_time, 3845 &dev_attr_lpfc_stat_data_ctrl, 3846 &dev_attr_lpfc_static_vport, 3847 &dev_attr_lpfc_fips_level, 3848 &dev_attr_lpfc_fips_rev, 3849 NULL, 3850 }; 3851 3852 /** 3853 * sysfs_ctlreg_write - Write method for writing to ctlreg 3854 * @filp: open sysfs file 3855 * @kobj: kernel kobject that contains the kernel class device. 3856 * @bin_attr: kernel attributes passed to us. 3857 * @buf: contains the data to be written to the adapter IOREG space. 3858 * @off: offset into buffer to beginning of data. 3859 * @count: bytes to transfer. 3860 * 3861 * Description: 3862 * Accessed via /sys/class/scsi_host/hostxxx/ctlreg. 3863 * Uses the adapter io control registers to send buf contents to the adapter. 3864 * 3865 * Returns: 3866 * -ERANGE off and count combo out of range 3867 * -EINVAL off, count or buff address invalid 3868 * -EPERM adapter is offline 3869 * value of count, buf contents written 3870 **/ 3871 static ssize_t 3872 sysfs_ctlreg_write(struct file *filp, struct kobject *kobj, 3873 struct bin_attribute *bin_attr, 3874 char *buf, loff_t off, size_t count) 3875 { 3876 size_t buf_off; 3877 struct device *dev = container_of(kobj, struct device, kobj); 3878 struct Scsi_Host *shost = class_to_shost(dev); 3879 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 3880 struct lpfc_hba *phba = vport->phba; 3881 3882 if (phba->sli_rev >= LPFC_SLI_REV4) 3883 return -EPERM; 3884 3885 if ((off + count) > FF_REG_AREA_SIZE) 3886 return -ERANGE; 3887 3888 if (count == 0) return 0; 3889 3890 if (off % 4 || count % 4 || (unsigned long)buf % 4) 3891 return -EINVAL; 3892 3893 if (!(vport->fc_flag & FC_OFFLINE_MODE)) { 3894 return -EPERM; 3895 } 3896 3897 spin_lock_irq(&phba->hbalock); 3898 for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) 3899 writel(*((uint32_t *)(buf + buf_off)), 3900 phba->ctrl_regs_memmap_p + off + buf_off); 3901 3902 spin_unlock_irq(&phba->hbalock); 3903 3904 return count; 3905 } 3906 3907 /** 3908 * sysfs_ctlreg_read - Read method for reading from ctlreg 3909 * @filp: open sysfs file 3910 * @kobj: kernel kobject that contains the kernel class device. 3911 * @bin_attr: kernel attributes passed to us. 3912 * @buf: if successful contains the data from the adapter IOREG space. 3913 * @off: offset into buffer to beginning of data. 3914 * @count: bytes to transfer. 3915 * 3916 * Description: 3917 * Accessed via /sys/class/scsi_host/hostxxx/ctlreg. 3918 * Uses the adapter io control registers to read data into buf. 3919 * 3920 * Returns: 3921 * -ERANGE off and count combo out of range 3922 * -EINVAL off, count or buff address invalid 3923 * value of count, buf contents read 3924 **/ 3925 static ssize_t 3926 sysfs_ctlreg_read(struct file *filp, struct kobject *kobj, 3927 struct bin_attribute *bin_attr, 3928 char *buf, loff_t off, size_t count) 3929 { 3930 size_t buf_off; 3931 uint32_t * tmp_ptr; 3932 struct device *dev = container_of(kobj, struct device, kobj); 3933 struct Scsi_Host *shost = class_to_shost(dev); 3934 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 3935 struct lpfc_hba *phba = vport->phba; 3936 3937 if (phba->sli_rev >= LPFC_SLI_REV4) 3938 return -EPERM; 3939 3940 if (off > FF_REG_AREA_SIZE) 3941 return -ERANGE; 3942 3943 if ((off + count) > FF_REG_AREA_SIZE) 3944 count = FF_REG_AREA_SIZE - off; 3945 3946 if (count == 0) return 0; 3947 3948 if (off % 4 || count % 4 || (unsigned long)buf % 4) 3949 return -EINVAL; 3950 3951 spin_lock_irq(&phba->hbalock); 3952 3953 for (buf_off = 0; buf_off < count; buf_off += sizeof(uint32_t)) { 3954 tmp_ptr = (uint32_t *)(buf + buf_off); 3955 *tmp_ptr = readl(phba->ctrl_regs_memmap_p + off + buf_off); 3956 } 3957 3958 spin_unlock_irq(&phba->hbalock); 3959 3960 return count; 3961 } 3962 3963 static struct bin_attribute sysfs_ctlreg_attr = { 3964 .attr = { 3965 .name = "ctlreg", 3966 .mode = S_IRUSR | S_IWUSR, 3967 }, 3968 .size = 256, 3969 .read = sysfs_ctlreg_read, 3970 .write = sysfs_ctlreg_write, 3971 }; 3972 3973 /** 3974 * sysfs_mbox_idle - frees the sysfs mailbox 3975 * @phba: lpfc_hba pointer 3976 **/ 3977 static void 3978 sysfs_mbox_idle(struct lpfc_hba *phba) 3979 { 3980 phba->sysfs_mbox.state = SMBOX_IDLE; 3981 phba->sysfs_mbox.offset = 0; 3982 3983 if (phba->sysfs_mbox.mbox) { 3984 mempool_free(phba->sysfs_mbox.mbox, 3985 phba->mbox_mem_pool); 3986 phba->sysfs_mbox.mbox = NULL; 3987 } 3988 } 3989 3990 /** 3991 * sysfs_mbox_write - Write method for writing information via mbox 3992 * @filp: open sysfs file 3993 * @kobj: kernel kobject that contains the kernel class device. 3994 * @bin_attr: kernel attributes passed to us. 3995 * @buf: contains the data to be written to sysfs mbox. 3996 * @off: offset into buffer to beginning of data. 3997 * @count: bytes to transfer. 3998 * 3999 * Description: 4000 * Accessed via /sys/class/scsi_host/hostxxx/mbox. 4001 * Uses the sysfs mbox to send buf contents to the adapter. 4002 * 4003 * Returns: 4004 * -ERANGE off and count combo out of range 4005 * -EINVAL off, count or buff address invalid 4006 * zero if count is zero 4007 * -EPERM adapter is offline 4008 * -ENOMEM failed to allocate memory for the mail box 4009 * -EAGAIN offset, state or mbox is NULL 4010 * count number of bytes transferred 4011 **/ 4012 static ssize_t 4013 sysfs_mbox_write(struct file *filp, struct kobject *kobj, 4014 struct bin_attribute *bin_attr, 4015 char *buf, loff_t off, size_t count) 4016 { 4017 struct device *dev = container_of(kobj, struct device, kobj); 4018 struct Scsi_Host *shost = class_to_shost(dev); 4019 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4020 struct lpfc_hba *phba = vport->phba; 4021 struct lpfcMboxq *mbox = NULL; 4022 4023 if ((count + off) > MAILBOX_CMD_SIZE) 4024 return -ERANGE; 4025 4026 if (off % 4 || count % 4 || (unsigned long)buf % 4) 4027 return -EINVAL; 4028 4029 if (count == 0) 4030 return 0; 4031 4032 if (off == 0) { 4033 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4034 if (!mbox) 4035 return -ENOMEM; 4036 memset(mbox, 0, sizeof (LPFC_MBOXQ_t)); 4037 } 4038 4039 spin_lock_irq(&phba->hbalock); 4040 4041 if (off == 0) { 4042 if (phba->sysfs_mbox.mbox) 4043 mempool_free(mbox, phba->mbox_mem_pool); 4044 else 4045 phba->sysfs_mbox.mbox = mbox; 4046 phba->sysfs_mbox.state = SMBOX_WRITING; 4047 } else { 4048 if (phba->sysfs_mbox.state != SMBOX_WRITING || 4049 phba->sysfs_mbox.offset != off || 4050 phba->sysfs_mbox.mbox == NULL) { 4051 sysfs_mbox_idle(phba); 4052 spin_unlock_irq(&phba->hbalock); 4053 return -EAGAIN; 4054 } 4055 } 4056 4057 memcpy((uint8_t *) &phba->sysfs_mbox.mbox->u.mb + off, 4058 buf, count); 4059 4060 phba->sysfs_mbox.offset = off + count; 4061 4062 spin_unlock_irq(&phba->hbalock); 4063 4064 return count; 4065 } 4066 4067 /** 4068 * sysfs_mbox_read - Read method for reading information via mbox 4069 * @filp: open sysfs file 4070 * @kobj: kernel kobject that contains the kernel class device. 4071 * @bin_attr: kernel attributes passed to us. 4072 * @buf: contains the data to be read from sysfs mbox. 4073 * @off: offset into buffer to beginning of data. 4074 * @count: bytes to transfer. 4075 * 4076 * Description: 4077 * Accessed via /sys/class/scsi_host/hostxxx/mbox. 4078 * Uses the sysfs mbox to receive data from to the adapter. 4079 * 4080 * Returns: 4081 * -ERANGE off greater than mailbox command size 4082 * -EINVAL off, count or buff address invalid 4083 * zero if off and count are zero 4084 * -EACCES adapter over temp 4085 * -EPERM garbage can value to catch a multitude of errors 4086 * -EAGAIN management IO not permitted, state or off error 4087 * -ETIME mailbox timeout 4088 * -ENODEV mailbox error 4089 * count number of bytes transferred 4090 **/ 4091 static ssize_t 4092 sysfs_mbox_read(struct file *filp, struct kobject *kobj, 4093 struct bin_attribute *bin_attr, 4094 char *buf, loff_t off, size_t count) 4095 { 4096 struct device *dev = container_of(kobj, struct device, kobj); 4097 struct Scsi_Host *shost = class_to_shost(dev); 4098 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4099 struct lpfc_hba *phba = vport->phba; 4100 int rc; 4101 MAILBOX_t *pmb; 4102 4103 if (off > MAILBOX_CMD_SIZE) 4104 return -ERANGE; 4105 4106 if ((count + off) > MAILBOX_CMD_SIZE) 4107 count = MAILBOX_CMD_SIZE - off; 4108 4109 if (off % 4 || count % 4 || (unsigned long)buf % 4) 4110 return -EINVAL; 4111 4112 if (off && count == 0) 4113 return 0; 4114 4115 spin_lock_irq(&phba->hbalock); 4116 4117 if (phba->over_temp_state == HBA_OVER_TEMP) { 4118 sysfs_mbox_idle(phba); 4119 spin_unlock_irq(&phba->hbalock); 4120 return -EACCES; 4121 } 4122 4123 if (off == 0 && 4124 phba->sysfs_mbox.state == SMBOX_WRITING && 4125 phba->sysfs_mbox.offset >= 2 * sizeof(uint32_t)) { 4126 pmb = &phba->sysfs_mbox.mbox->u.mb; 4127 switch (pmb->mbxCommand) { 4128 /* Offline only */ 4129 case MBX_INIT_LINK: 4130 case MBX_DOWN_LINK: 4131 case MBX_CONFIG_LINK: 4132 case MBX_CONFIG_RING: 4133 case MBX_RESET_RING: 4134 case MBX_UNREG_LOGIN: 4135 case MBX_CLEAR_LA: 4136 case MBX_DUMP_CONTEXT: 4137 case MBX_RUN_DIAGS: 4138 case MBX_RESTART: 4139 case MBX_SET_MASK: 4140 case MBX_SET_DEBUG: 4141 if (!(vport->fc_flag & FC_OFFLINE_MODE)) { 4142 printk(KERN_WARNING "mbox_read:Command 0x%x " 4143 "is illegal in on-line state\n", 4144 pmb->mbxCommand); 4145 sysfs_mbox_idle(phba); 4146 spin_unlock_irq(&phba->hbalock); 4147 return -EPERM; 4148 } 4149 case MBX_WRITE_NV: 4150 case MBX_WRITE_VPARMS: 4151 case MBX_LOAD_SM: 4152 case MBX_READ_NV: 4153 case MBX_READ_CONFIG: 4154 case MBX_READ_RCONFIG: 4155 case MBX_READ_STATUS: 4156 case MBX_READ_XRI: 4157 case MBX_READ_REV: 4158 case MBX_READ_LNK_STAT: 4159 case MBX_DUMP_MEMORY: 4160 case MBX_DOWN_LOAD: 4161 case MBX_UPDATE_CFG: 4162 case MBX_KILL_BOARD: 4163 case MBX_LOAD_AREA: 4164 case MBX_LOAD_EXP_ROM: 4165 case MBX_BEACON: 4166 case MBX_DEL_LD_ENTRY: 4167 case MBX_SET_VARIABLE: 4168 case MBX_WRITE_WWN: 4169 case MBX_PORT_CAPABILITIES: 4170 case MBX_PORT_IOV_CONTROL: 4171 break; 4172 case MBX_SECURITY_MGMT: 4173 case MBX_AUTH_PORT: 4174 if (phba->pci_dev_grp == LPFC_PCI_DEV_OC) { 4175 printk(KERN_WARNING "mbox_read:Command 0x%x " 4176 "is not permitted\n", pmb->mbxCommand); 4177 sysfs_mbox_idle(phba); 4178 spin_unlock_irq(&phba->hbalock); 4179 return -EPERM; 4180 } 4181 break; 4182 case MBX_READ_SPARM64: 4183 case MBX_READ_TOPOLOGY: 4184 case MBX_REG_LOGIN: 4185 case MBX_REG_LOGIN64: 4186 case MBX_CONFIG_PORT: 4187 case MBX_RUN_BIU_DIAG: 4188 printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n", 4189 pmb->mbxCommand); 4190 sysfs_mbox_idle(phba); 4191 spin_unlock_irq(&phba->hbalock); 4192 return -EPERM; 4193 default: 4194 printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n", 4195 pmb->mbxCommand); 4196 sysfs_mbox_idle(phba); 4197 spin_unlock_irq(&phba->hbalock); 4198 return -EPERM; 4199 } 4200 4201 /* If HBA encountered an error attention, allow only DUMP 4202 * or RESTART mailbox commands until the HBA is restarted. 4203 */ 4204 if (phba->pport->stopped && 4205 pmb->mbxCommand != MBX_DUMP_MEMORY && 4206 pmb->mbxCommand != MBX_RESTART && 4207 pmb->mbxCommand != MBX_WRITE_VPARMS && 4208 pmb->mbxCommand != MBX_WRITE_WWN) 4209 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX, 4210 "1259 mbox: Issued mailbox cmd " 4211 "0x%x while in stopped state.\n", 4212 pmb->mbxCommand); 4213 4214 phba->sysfs_mbox.mbox->vport = vport; 4215 4216 /* Don't allow mailbox commands to be sent when blocked 4217 * or when in the middle of discovery 4218 */ 4219 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) { 4220 sysfs_mbox_idle(phba); 4221 spin_unlock_irq(&phba->hbalock); 4222 return -EAGAIN; 4223 } 4224 4225 if ((vport->fc_flag & FC_OFFLINE_MODE) || 4226 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) { 4227 4228 spin_unlock_irq(&phba->hbalock); 4229 rc = lpfc_sli_issue_mbox (phba, 4230 phba->sysfs_mbox.mbox, 4231 MBX_POLL); 4232 spin_lock_irq(&phba->hbalock); 4233 4234 } else { 4235 spin_unlock_irq(&phba->hbalock); 4236 rc = lpfc_sli_issue_mbox_wait (phba, 4237 phba->sysfs_mbox.mbox, 4238 lpfc_mbox_tmo_val(phba, pmb->mbxCommand) * HZ); 4239 spin_lock_irq(&phba->hbalock); 4240 } 4241 4242 if (rc != MBX_SUCCESS) { 4243 if (rc == MBX_TIMEOUT) { 4244 phba->sysfs_mbox.mbox = NULL; 4245 } 4246 sysfs_mbox_idle(phba); 4247 spin_unlock_irq(&phba->hbalock); 4248 return (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV; 4249 } 4250 phba->sysfs_mbox.state = SMBOX_READING; 4251 } 4252 else if (phba->sysfs_mbox.offset != off || 4253 phba->sysfs_mbox.state != SMBOX_READING) { 4254 printk(KERN_WARNING "mbox_read: Bad State\n"); 4255 sysfs_mbox_idle(phba); 4256 spin_unlock_irq(&phba->hbalock); 4257 return -EAGAIN; 4258 } 4259 4260 memcpy(buf, (uint8_t *) &pmb + off, count); 4261 4262 phba->sysfs_mbox.offset = off + count; 4263 4264 if (phba->sysfs_mbox.offset == MAILBOX_CMD_SIZE) 4265 sysfs_mbox_idle(phba); 4266 4267 spin_unlock_irq(&phba->hbalock); 4268 4269 return count; 4270 } 4271 4272 static struct bin_attribute sysfs_mbox_attr = { 4273 .attr = { 4274 .name = "mbox", 4275 .mode = S_IRUSR | S_IWUSR, 4276 }, 4277 .size = MAILBOX_SYSFS_MAX, 4278 .read = sysfs_mbox_read, 4279 .write = sysfs_mbox_write, 4280 }; 4281 4282 /** 4283 * lpfc_alloc_sysfs_attr - Creates the ctlreg and mbox entries 4284 * @vport: address of lpfc vport structure. 4285 * 4286 * Return codes: 4287 * zero on success 4288 * error return code from sysfs_create_bin_file() 4289 **/ 4290 int 4291 lpfc_alloc_sysfs_attr(struct lpfc_vport *vport) 4292 { 4293 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4294 int error; 4295 4296 error = sysfs_create_bin_file(&shost->shost_dev.kobj, 4297 &sysfs_drvr_stat_data_attr); 4298 4299 /* Virtual ports do not need ctrl_reg and mbox */ 4300 if (error || vport->port_type == LPFC_NPIV_PORT) 4301 goto out; 4302 4303 error = sysfs_create_bin_file(&shost->shost_dev.kobj, 4304 &sysfs_ctlreg_attr); 4305 if (error) 4306 goto out_remove_stat_attr; 4307 4308 error = sysfs_create_bin_file(&shost->shost_dev.kobj, 4309 &sysfs_mbox_attr); 4310 if (error) 4311 goto out_remove_ctlreg_attr; 4312 4313 return 0; 4314 out_remove_ctlreg_attr: 4315 sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr); 4316 out_remove_stat_attr: 4317 sysfs_remove_bin_file(&shost->shost_dev.kobj, 4318 &sysfs_drvr_stat_data_attr); 4319 out: 4320 return error; 4321 } 4322 4323 /** 4324 * lpfc_free_sysfs_attr - Removes the ctlreg and mbox entries 4325 * @vport: address of lpfc vport structure. 4326 **/ 4327 void 4328 lpfc_free_sysfs_attr(struct lpfc_vport *vport) 4329 { 4330 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 4331 sysfs_remove_bin_file(&shost->shost_dev.kobj, 4332 &sysfs_drvr_stat_data_attr); 4333 /* Virtual ports do not need ctrl_reg and mbox */ 4334 if (vport->port_type == LPFC_NPIV_PORT) 4335 return; 4336 sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_mbox_attr); 4337 sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr); 4338 } 4339 4340 4341 /* 4342 * Dynamic FC Host Attributes Support 4343 */ 4344 4345 /** 4346 * lpfc_get_host_port_id - Copy the vport DID into the scsi host port id 4347 * @shost: kernel scsi host pointer. 4348 **/ 4349 static void 4350 lpfc_get_host_port_id(struct Scsi_Host *shost) 4351 { 4352 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4353 4354 /* note: fc_myDID already in cpu endianness */ 4355 fc_host_port_id(shost) = vport->fc_myDID; 4356 } 4357 4358 /** 4359 * lpfc_get_host_port_type - Set the value of the scsi host port type 4360 * @shost: kernel scsi host pointer. 4361 **/ 4362 static void 4363 lpfc_get_host_port_type(struct Scsi_Host *shost) 4364 { 4365 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4366 struct lpfc_hba *phba = vport->phba; 4367 4368 spin_lock_irq(shost->host_lock); 4369 4370 if (vport->port_type == LPFC_NPIV_PORT) { 4371 fc_host_port_type(shost) = FC_PORTTYPE_NPIV; 4372 } else if (lpfc_is_link_up(phba)) { 4373 if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4374 if (vport->fc_flag & FC_PUBLIC_LOOP) 4375 fc_host_port_type(shost) = FC_PORTTYPE_NLPORT; 4376 else 4377 fc_host_port_type(shost) = FC_PORTTYPE_LPORT; 4378 } else { 4379 if (vport->fc_flag & FC_FABRIC) 4380 fc_host_port_type(shost) = FC_PORTTYPE_NPORT; 4381 else 4382 fc_host_port_type(shost) = FC_PORTTYPE_PTP; 4383 } 4384 } else 4385 fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN; 4386 4387 spin_unlock_irq(shost->host_lock); 4388 } 4389 4390 /** 4391 * lpfc_get_host_port_state - Set the value of the scsi host port state 4392 * @shost: kernel scsi host pointer. 4393 **/ 4394 static void 4395 lpfc_get_host_port_state(struct Scsi_Host *shost) 4396 { 4397 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4398 struct lpfc_hba *phba = vport->phba; 4399 4400 spin_lock_irq(shost->host_lock); 4401 4402 if (vport->fc_flag & FC_OFFLINE_MODE) 4403 fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE; 4404 else { 4405 switch (phba->link_state) { 4406 case LPFC_LINK_UNKNOWN: 4407 case LPFC_LINK_DOWN: 4408 fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN; 4409 break; 4410 case LPFC_LINK_UP: 4411 case LPFC_CLEAR_LA: 4412 case LPFC_HBA_READY: 4413 /* Links up, beyond this port_type reports state */ 4414 fc_host_port_state(shost) = FC_PORTSTATE_ONLINE; 4415 break; 4416 case LPFC_HBA_ERROR: 4417 fc_host_port_state(shost) = FC_PORTSTATE_ERROR; 4418 break; 4419 default: 4420 fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN; 4421 break; 4422 } 4423 } 4424 4425 spin_unlock_irq(shost->host_lock); 4426 } 4427 4428 /** 4429 * lpfc_get_host_speed - Set the value of the scsi host speed 4430 * @shost: kernel scsi host pointer. 4431 **/ 4432 static void 4433 lpfc_get_host_speed(struct Scsi_Host *shost) 4434 { 4435 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4436 struct lpfc_hba *phba = vport->phba; 4437 4438 spin_lock_irq(shost->host_lock); 4439 4440 if (lpfc_is_link_up(phba)) { 4441 switch(phba->fc_linkspeed) { 4442 case LPFC_LINK_SPEED_1GHZ: 4443 fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 4444 break; 4445 case LPFC_LINK_SPEED_2GHZ: 4446 fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 4447 break; 4448 case LPFC_LINK_SPEED_4GHZ: 4449 fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 4450 break; 4451 case LPFC_LINK_SPEED_8GHZ: 4452 fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 4453 break; 4454 case LPFC_LINK_SPEED_10GHZ: 4455 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 4456 break; 4457 case LPFC_LINK_SPEED_16GHZ: 4458 fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 4459 break; 4460 default: 4461 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 4462 break; 4463 } 4464 } else 4465 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 4466 4467 spin_unlock_irq(shost->host_lock); 4468 } 4469 4470 /** 4471 * lpfc_get_host_fabric_name - Set the value of the scsi host fabric name 4472 * @shost: kernel scsi host pointer. 4473 **/ 4474 static void 4475 lpfc_get_host_fabric_name (struct Scsi_Host *shost) 4476 { 4477 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4478 struct lpfc_hba *phba = vport->phba; 4479 u64 node_name; 4480 4481 spin_lock_irq(shost->host_lock); 4482 4483 if ((vport->fc_flag & FC_FABRIC) || 4484 ((phba->fc_topology == LPFC_TOPOLOGY_LOOP) && 4485 (vport->fc_flag & FC_PUBLIC_LOOP))) 4486 node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn); 4487 else 4488 /* fabric is local port if there is no F/FL_Port */ 4489 node_name = 0; 4490 4491 spin_unlock_irq(shost->host_lock); 4492 4493 fc_host_fabric_name(shost) = node_name; 4494 } 4495 4496 /** 4497 * lpfc_get_stats - Return statistical information about the adapter 4498 * @shost: kernel scsi host pointer. 4499 * 4500 * Notes: 4501 * NULL on error for link down, no mbox pool, sli2 active, 4502 * management not allowed, memory allocation error, or mbox error. 4503 * 4504 * Returns: 4505 * NULL for error 4506 * address of the adapter host statistics 4507 **/ 4508 static struct fc_host_statistics * 4509 lpfc_get_stats(struct Scsi_Host *shost) 4510 { 4511 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4512 struct lpfc_hba *phba = vport->phba; 4513 struct lpfc_sli *psli = &phba->sli; 4514 struct fc_host_statistics *hs = &phba->link_stats; 4515 struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets; 4516 LPFC_MBOXQ_t *pmboxq; 4517 MAILBOX_t *pmb; 4518 unsigned long seconds; 4519 int rc = 0; 4520 4521 /* 4522 * prevent udev from issuing mailbox commands until the port is 4523 * configured. 4524 */ 4525 if (phba->link_state < LPFC_LINK_DOWN || 4526 !phba->mbox_mem_pool || 4527 (phba->sli.sli_flag & LPFC_SLI_ACTIVE) == 0) 4528 return NULL; 4529 4530 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) 4531 return NULL; 4532 4533 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4534 if (!pmboxq) 4535 return NULL; 4536 memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t)); 4537 4538 pmb = &pmboxq->u.mb; 4539 pmb->mbxCommand = MBX_READ_STATUS; 4540 pmb->mbxOwner = OWN_HOST; 4541 pmboxq->context1 = NULL; 4542 pmboxq->vport = vport; 4543 4544 if (vport->fc_flag & FC_OFFLINE_MODE) 4545 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); 4546 else 4547 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); 4548 4549 if (rc != MBX_SUCCESS) { 4550 if (rc != MBX_TIMEOUT) 4551 mempool_free(pmboxq, phba->mbox_mem_pool); 4552 return NULL; 4553 } 4554 4555 memset(hs, 0, sizeof (struct fc_host_statistics)); 4556 4557 hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt; 4558 hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256); 4559 hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt; 4560 hs->rx_words = (pmb->un.varRdStatus.rcvByteCnt * 256); 4561 4562 memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t)); 4563 pmb->mbxCommand = MBX_READ_LNK_STAT; 4564 pmb->mbxOwner = OWN_HOST; 4565 pmboxq->context1 = NULL; 4566 pmboxq->vport = vport; 4567 4568 if (vport->fc_flag & FC_OFFLINE_MODE) 4569 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); 4570 else 4571 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); 4572 4573 if (rc != MBX_SUCCESS) { 4574 if (rc != MBX_TIMEOUT) 4575 mempool_free(pmboxq, phba->mbox_mem_pool); 4576 return NULL; 4577 } 4578 4579 hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt; 4580 hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt; 4581 hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt; 4582 hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt; 4583 hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord; 4584 hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt; 4585 hs->error_frames = pmb->un.varRdLnk.crcCnt; 4586 4587 hs->link_failure_count -= lso->link_failure_count; 4588 hs->loss_of_sync_count -= lso->loss_of_sync_count; 4589 hs->loss_of_signal_count -= lso->loss_of_signal_count; 4590 hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count; 4591 hs->invalid_tx_word_count -= lso->invalid_tx_word_count; 4592 hs->invalid_crc_count -= lso->invalid_crc_count; 4593 hs->error_frames -= lso->error_frames; 4594 4595 if (phba->hba_flag & HBA_FCOE_MODE) { 4596 hs->lip_count = -1; 4597 hs->nos_count = (phba->link_events >> 1); 4598 hs->nos_count -= lso->link_events; 4599 } else if (phba->fc_topology == LPFC_TOPOLOGY_LOOP) { 4600 hs->lip_count = (phba->fc_eventTag >> 1); 4601 hs->lip_count -= lso->link_events; 4602 hs->nos_count = -1; 4603 } else { 4604 hs->lip_count = -1; 4605 hs->nos_count = (phba->fc_eventTag >> 1); 4606 hs->nos_count -= lso->link_events; 4607 } 4608 4609 hs->dumped_frames = -1; 4610 4611 seconds = get_seconds(); 4612 if (seconds < psli->stats_start) 4613 hs->seconds_since_last_reset = seconds + 4614 ((unsigned long)-1 - psli->stats_start); 4615 else 4616 hs->seconds_since_last_reset = seconds - psli->stats_start; 4617 4618 mempool_free(pmboxq, phba->mbox_mem_pool); 4619 4620 return hs; 4621 } 4622 4623 /** 4624 * lpfc_reset_stats - Copy the adapter link stats information 4625 * @shost: kernel scsi host pointer. 4626 **/ 4627 static void 4628 lpfc_reset_stats(struct Scsi_Host *shost) 4629 { 4630 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4631 struct lpfc_hba *phba = vport->phba; 4632 struct lpfc_sli *psli = &phba->sli; 4633 struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets; 4634 LPFC_MBOXQ_t *pmboxq; 4635 MAILBOX_t *pmb; 4636 int rc = 0; 4637 4638 if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) 4639 return; 4640 4641 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 4642 if (!pmboxq) 4643 return; 4644 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); 4645 4646 pmb = &pmboxq->u.mb; 4647 pmb->mbxCommand = MBX_READ_STATUS; 4648 pmb->mbxOwner = OWN_HOST; 4649 pmb->un.varWords[0] = 0x1; /* reset request */ 4650 pmboxq->context1 = NULL; 4651 pmboxq->vport = vport; 4652 4653 if ((vport->fc_flag & FC_OFFLINE_MODE) || 4654 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) 4655 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); 4656 else 4657 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); 4658 4659 if (rc != MBX_SUCCESS) { 4660 if (rc != MBX_TIMEOUT) 4661 mempool_free(pmboxq, phba->mbox_mem_pool); 4662 return; 4663 } 4664 4665 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t)); 4666 pmb->mbxCommand = MBX_READ_LNK_STAT; 4667 pmb->mbxOwner = OWN_HOST; 4668 pmboxq->context1 = NULL; 4669 pmboxq->vport = vport; 4670 4671 if ((vport->fc_flag & FC_OFFLINE_MODE) || 4672 (!(psli->sli_flag & LPFC_SLI_ACTIVE))) 4673 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL); 4674 else 4675 rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2); 4676 4677 if (rc != MBX_SUCCESS) { 4678 if (rc != MBX_TIMEOUT) 4679 mempool_free( pmboxq, phba->mbox_mem_pool); 4680 return; 4681 } 4682 4683 lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt; 4684 lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt; 4685 lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt; 4686 lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt; 4687 lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord; 4688 lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt; 4689 lso->error_frames = pmb->un.varRdLnk.crcCnt; 4690 if (phba->hba_flag & HBA_FCOE_MODE) 4691 lso->link_events = (phba->link_events >> 1); 4692 else 4693 lso->link_events = (phba->fc_eventTag >> 1); 4694 4695 psli->stats_start = get_seconds(); 4696 4697 mempool_free(pmboxq, phba->mbox_mem_pool); 4698 4699 return; 4700 } 4701 4702 /* 4703 * The LPFC driver treats linkdown handling as target loss events so there 4704 * are no sysfs handlers for link_down_tmo. 4705 */ 4706 4707 /** 4708 * lpfc_get_node_by_target - Return the nodelist for a target 4709 * @starget: kernel scsi target pointer. 4710 * 4711 * Returns: 4712 * address of the node list if found 4713 * NULL target not found 4714 **/ 4715 static struct lpfc_nodelist * 4716 lpfc_get_node_by_target(struct scsi_target *starget) 4717 { 4718 struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); 4719 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 4720 struct lpfc_nodelist *ndlp; 4721 4722 spin_lock_irq(shost->host_lock); 4723 /* Search for this, mapped, target ID */ 4724 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 4725 if (NLP_CHK_NODE_ACT(ndlp) && 4726 ndlp->nlp_state == NLP_STE_MAPPED_NODE && 4727 starget->id == ndlp->nlp_sid) { 4728 spin_unlock_irq(shost->host_lock); 4729 return ndlp; 4730 } 4731 } 4732 spin_unlock_irq(shost->host_lock); 4733 return NULL; 4734 } 4735 4736 /** 4737 * lpfc_get_starget_port_id - Set the target port id to the ndlp DID or -1 4738 * @starget: kernel scsi target pointer. 4739 **/ 4740 static void 4741 lpfc_get_starget_port_id(struct scsi_target *starget) 4742 { 4743 struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget); 4744 4745 fc_starget_port_id(starget) = ndlp ? ndlp->nlp_DID : -1; 4746 } 4747 4748 /** 4749 * lpfc_get_starget_node_name - Set the target node name 4750 * @starget: kernel scsi target pointer. 4751 * 4752 * Description: Set the target node name to the ndlp node name wwn or zero. 4753 **/ 4754 static void 4755 lpfc_get_starget_node_name(struct scsi_target *starget) 4756 { 4757 struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget); 4758 4759 fc_starget_node_name(starget) = 4760 ndlp ? wwn_to_u64(ndlp->nlp_nodename.u.wwn) : 0; 4761 } 4762 4763 /** 4764 * lpfc_get_starget_port_name - Set the target port name 4765 * @starget: kernel scsi target pointer. 4766 * 4767 * Description: set the target port name to the ndlp port name wwn or zero. 4768 **/ 4769 static void 4770 lpfc_get_starget_port_name(struct scsi_target *starget) 4771 { 4772 struct lpfc_nodelist *ndlp = lpfc_get_node_by_target(starget); 4773 4774 fc_starget_port_name(starget) = 4775 ndlp ? wwn_to_u64(ndlp->nlp_portname.u.wwn) : 0; 4776 } 4777 4778 /** 4779 * lpfc_set_rport_loss_tmo - Set the rport dev loss tmo 4780 * @rport: fc rport address. 4781 * @timeout: new value for dev loss tmo. 4782 * 4783 * Description: 4784 * If timeout is non zero set the dev_loss_tmo to timeout, else set 4785 * dev_loss_tmo to one. 4786 **/ 4787 static void 4788 lpfc_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout) 4789 { 4790 if (timeout) 4791 rport->dev_loss_tmo = timeout; 4792 else 4793 rport->dev_loss_tmo = 1; 4794 } 4795 4796 /** 4797 * lpfc_rport_show_function - Return rport target information 4798 * 4799 * Description: 4800 * Macro that uses field to generate a function with the name lpfc_show_rport_ 4801 * 4802 * lpfc_show_rport_##field: returns the bytes formatted in buf 4803 * @cdev: class converted to an fc_rport. 4804 * @buf: on return contains the target_field or zero. 4805 * 4806 * Returns: size of formatted string. 4807 **/ 4808 #define lpfc_rport_show_function(field, format_string, sz, cast) \ 4809 static ssize_t \ 4810 lpfc_show_rport_##field (struct device *dev, \ 4811 struct device_attribute *attr, \ 4812 char *buf) \ 4813 { \ 4814 struct fc_rport *rport = transport_class_to_rport(dev); \ 4815 struct lpfc_rport_data *rdata = rport->hostdata; \ 4816 return snprintf(buf, sz, format_string, \ 4817 (rdata->target) ? cast rdata->target->field : 0); \ 4818 } 4819 4820 #define lpfc_rport_rd_attr(field, format_string, sz) \ 4821 lpfc_rport_show_function(field, format_string, sz, ) \ 4822 static FC_RPORT_ATTR(field, S_IRUGO, lpfc_show_rport_##field, NULL) 4823 4824 /** 4825 * lpfc_set_vport_symbolic_name - Set the vport's symbolic name 4826 * @fc_vport: The fc_vport who's symbolic name has been changed. 4827 * 4828 * Description: 4829 * This function is called by the transport after the @fc_vport's symbolic name 4830 * has been changed. This function re-registers the symbolic name with the 4831 * switch to propagate the change into the fabric if the vport is active. 4832 **/ 4833 static void 4834 lpfc_set_vport_symbolic_name(struct fc_vport *fc_vport) 4835 { 4836 struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data; 4837 4838 if (vport->port_state == LPFC_VPORT_READY) 4839 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 4840 } 4841 4842 /** 4843 * lpfc_hba_log_verbose_init - Set hba's log verbose level 4844 * @phba: Pointer to lpfc_hba struct. 4845 * 4846 * This function is called by the lpfc_get_cfgparam() routine to set the 4847 * module lpfc_log_verbose into the @phba cfg_log_verbose for use with 4848 * log message according to the module's lpfc_log_verbose parameter setting 4849 * before hba port or vport created. 4850 **/ 4851 static void 4852 lpfc_hba_log_verbose_init(struct lpfc_hba *phba, uint32_t verbose) 4853 { 4854 phba->cfg_log_verbose = verbose; 4855 } 4856 4857 struct fc_function_template lpfc_transport_functions = { 4858 /* fixed attributes the driver supports */ 4859 .show_host_node_name = 1, 4860 .show_host_port_name = 1, 4861 .show_host_supported_classes = 1, 4862 .show_host_supported_fc4s = 1, 4863 .show_host_supported_speeds = 1, 4864 .show_host_maxframe_size = 1, 4865 .show_host_symbolic_name = 1, 4866 4867 /* dynamic attributes the driver supports */ 4868 .get_host_port_id = lpfc_get_host_port_id, 4869 .show_host_port_id = 1, 4870 4871 .get_host_port_type = lpfc_get_host_port_type, 4872 .show_host_port_type = 1, 4873 4874 .get_host_port_state = lpfc_get_host_port_state, 4875 .show_host_port_state = 1, 4876 4877 /* active_fc4s is shown but doesn't change (thus no get function) */ 4878 .show_host_active_fc4s = 1, 4879 4880 .get_host_speed = lpfc_get_host_speed, 4881 .show_host_speed = 1, 4882 4883 .get_host_fabric_name = lpfc_get_host_fabric_name, 4884 .show_host_fabric_name = 1, 4885 4886 /* 4887 * The LPFC driver treats linkdown handling as target loss events 4888 * so there are no sysfs handlers for link_down_tmo. 4889 */ 4890 4891 .get_fc_host_stats = lpfc_get_stats, 4892 .reset_fc_host_stats = lpfc_reset_stats, 4893 4894 .dd_fcrport_size = sizeof(struct lpfc_rport_data), 4895 .show_rport_maxframe_size = 1, 4896 .show_rport_supported_classes = 1, 4897 4898 .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo, 4899 .show_rport_dev_loss_tmo = 1, 4900 4901 .get_starget_port_id = lpfc_get_starget_port_id, 4902 .show_starget_port_id = 1, 4903 4904 .get_starget_node_name = lpfc_get_starget_node_name, 4905 .show_starget_node_name = 1, 4906 4907 .get_starget_port_name = lpfc_get_starget_port_name, 4908 .show_starget_port_name = 1, 4909 4910 .issue_fc_host_lip = lpfc_issue_lip, 4911 .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk, 4912 .terminate_rport_io = lpfc_terminate_rport_io, 4913 4914 .dd_fcvport_size = sizeof(struct lpfc_vport *), 4915 4916 .vport_disable = lpfc_vport_disable, 4917 4918 .set_vport_symbolic_name = lpfc_set_vport_symbolic_name, 4919 4920 .bsg_request = lpfc_bsg_request, 4921 .bsg_timeout = lpfc_bsg_timeout, 4922 }; 4923 4924 struct fc_function_template lpfc_vport_transport_functions = { 4925 /* fixed attributes the driver supports */ 4926 .show_host_node_name = 1, 4927 .show_host_port_name = 1, 4928 .show_host_supported_classes = 1, 4929 .show_host_supported_fc4s = 1, 4930 .show_host_supported_speeds = 1, 4931 .show_host_maxframe_size = 1, 4932 .show_host_symbolic_name = 1, 4933 4934 /* dynamic attributes the driver supports */ 4935 .get_host_port_id = lpfc_get_host_port_id, 4936 .show_host_port_id = 1, 4937 4938 .get_host_port_type = lpfc_get_host_port_type, 4939 .show_host_port_type = 1, 4940 4941 .get_host_port_state = lpfc_get_host_port_state, 4942 .show_host_port_state = 1, 4943 4944 /* active_fc4s is shown but doesn't change (thus no get function) */ 4945 .show_host_active_fc4s = 1, 4946 4947 .get_host_speed = lpfc_get_host_speed, 4948 .show_host_speed = 1, 4949 4950 .get_host_fabric_name = lpfc_get_host_fabric_name, 4951 .show_host_fabric_name = 1, 4952 4953 /* 4954 * The LPFC driver treats linkdown handling as target loss events 4955 * so there are no sysfs handlers for link_down_tmo. 4956 */ 4957 4958 .get_fc_host_stats = lpfc_get_stats, 4959 .reset_fc_host_stats = lpfc_reset_stats, 4960 4961 .dd_fcrport_size = sizeof(struct lpfc_rport_data), 4962 .show_rport_maxframe_size = 1, 4963 .show_rport_supported_classes = 1, 4964 4965 .set_rport_dev_loss_tmo = lpfc_set_rport_loss_tmo, 4966 .show_rport_dev_loss_tmo = 1, 4967 4968 .get_starget_port_id = lpfc_get_starget_port_id, 4969 .show_starget_port_id = 1, 4970 4971 .get_starget_node_name = lpfc_get_starget_node_name, 4972 .show_starget_node_name = 1, 4973 4974 .get_starget_port_name = lpfc_get_starget_port_name, 4975 .show_starget_port_name = 1, 4976 4977 .dev_loss_tmo_callbk = lpfc_dev_loss_tmo_callbk, 4978 .terminate_rport_io = lpfc_terminate_rport_io, 4979 4980 .vport_disable = lpfc_vport_disable, 4981 4982 .set_vport_symbolic_name = lpfc_set_vport_symbolic_name, 4983 }; 4984 4985 /** 4986 * lpfc_get_cfgparam - Used during probe_one to init the adapter structure 4987 * @phba: lpfc_hba pointer. 4988 **/ 4989 void 4990 lpfc_get_cfgparam(struct lpfc_hba *phba) 4991 { 4992 lpfc_cr_delay_init(phba, lpfc_cr_delay); 4993 lpfc_cr_count_init(phba, lpfc_cr_count); 4994 lpfc_multi_ring_support_init(phba, lpfc_multi_ring_support); 4995 lpfc_multi_ring_rctl_init(phba, lpfc_multi_ring_rctl); 4996 lpfc_multi_ring_type_init(phba, lpfc_multi_ring_type); 4997 lpfc_ack0_init(phba, lpfc_ack0); 4998 lpfc_topology_init(phba, lpfc_topology); 4999 lpfc_link_speed_init(phba, lpfc_link_speed); 5000 lpfc_poll_tmo_init(phba, lpfc_poll_tmo); 5001 lpfc_enable_npiv_init(phba, lpfc_enable_npiv); 5002 lpfc_fcf_failover_policy_init(phba, lpfc_fcf_failover_policy); 5003 lpfc_enable_rrq_init(phba, lpfc_enable_rrq); 5004 lpfc_use_msi_init(phba, lpfc_use_msi); 5005 lpfc_fcp_imax_init(phba, lpfc_fcp_imax); 5006 lpfc_fcp_wq_count_init(phba, lpfc_fcp_wq_count); 5007 lpfc_fcp_eq_count_init(phba, lpfc_fcp_eq_count); 5008 lpfc_enable_hba_reset_init(phba, lpfc_enable_hba_reset); 5009 lpfc_enable_hba_heartbeat_init(phba, lpfc_enable_hba_heartbeat); 5010 lpfc_enable_bg_init(phba, lpfc_enable_bg); 5011 if (phba->sli_rev == LPFC_SLI_REV4) 5012 phba->cfg_poll = 0; 5013 else 5014 phba->cfg_poll = lpfc_poll; 5015 phba->cfg_soft_wwnn = 0L; 5016 phba->cfg_soft_wwpn = 0L; 5017 lpfc_sg_seg_cnt_init(phba, lpfc_sg_seg_cnt); 5018 lpfc_prot_sg_seg_cnt_init(phba, lpfc_prot_sg_seg_cnt); 5019 lpfc_hba_queue_depth_init(phba, lpfc_hba_queue_depth); 5020 lpfc_hba_log_verbose_init(phba, lpfc_log_verbose); 5021 lpfc_aer_support_init(phba, lpfc_aer_support); 5022 lpfc_sriov_nr_virtfn_init(phba, lpfc_sriov_nr_virtfn); 5023 lpfc_suppress_link_up_init(phba, lpfc_suppress_link_up); 5024 lpfc_iocb_cnt_init(phba, lpfc_iocb_cnt); 5025 phba->cfg_enable_dss = 1; 5026 return; 5027 } 5028 5029 /** 5030 * lpfc_get_vport_cfgparam - Used during port create, init the vport structure 5031 * @vport: lpfc_vport pointer. 5032 **/ 5033 void 5034 lpfc_get_vport_cfgparam(struct lpfc_vport *vport) 5035 { 5036 lpfc_log_verbose_init(vport, lpfc_log_verbose); 5037 lpfc_lun_queue_depth_init(vport, lpfc_lun_queue_depth); 5038 lpfc_tgt_queue_depth_init(vport, lpfc_tgt_queue_depth); 5039 lpfc_devloss_tmo_init(vport, lpfc_devloss_tmo); 5040 lpfc_nodev_tmo_init(vport, lpfc_nodev_tmo); 5041 lpfc_peer_port_login_init(vport, lpfc_peer_port_login); 5042 lpfc_restrict_login_init(vport, lpfc_restrict_login); 5043 lpfc_fcp_class_init(vport, lpfc_fcp_class); 5044 lpfc_use_adisc_init(vport, lpfc_use_adisc); 5045 lpfc_max_scsicmpl_time_init(vport, lpfc_max_scsicmpl_time); 5046 lpfc_fdmi_on_init(vport, lpfc_fdmi_on); 5047 lpfc_discovery_threads_init(vport, lpfc_discovery_threads); 5048 lpfc_max_luns_init(vport, lpfc_max_luns); 5049 lpfc_scan_down_init(vport, lpfc_scan_down); 5050 lpfc_enable_da_id_init(vport, lpfc_enable_da_id); 5051 return; 5052 } 5053