1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2008 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/blkdev.h> 23 #include <linux/delay.h> 24 #include <linux/dma-mapping.h> 25 #include <linux/idr.h> 26 #include <linux/interrupt.h> 27 #include <linux/kthread.h> 28 #include <linux/pci.h> 29 #include <linux/spinlock.h> 30 #include <linux/ctype.h> 31 32 #include <scsi/scsi.h> 33 #include <scsi/scsi_device.h> 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_transport_fc.h> 36 37 #include "lpfc_hw.h" 38 #include "lpfc_sli.h" 39 #include "lpfc_nl.h" 40 #include "lpfc_disc.h" 41 #include "lpfc_scsi.h" 42 #include "lpfc.h" 43 #include "lpfc_logmsg.h" 44 #include "lpfc_crtn.h" 45 #include "lpfc_vport.h" 46 #include "lpfc_version.h" 47 48 static int lpfc_parse_vpd(struct lpfc_hba *, uint8_t *, int); 49 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *); 50 static int lpfc_post_rcv_buf(struct lpfc_hba *); 51 52 static struct scsi_transport_template *lpfc_transport_template = NULL; 53 static struct scsi_transport_template *lpfc_vport_transport_template = NULL; 54 static DEFINE_IDR(lpfc_hba_index); 55 56 /** 57 * lpfc_config_port_prep: Perform lpfc initialization prior to config port. 58 * @phba: pointer to lpfc hba data structure. 59 * 60 * This routine will do LPFC initialization prior to issuing the CONFIG_PORT 61 * mailbox command. It retrieves the revision information from the HBA and 62 * collects the Vital Product Data (VPD) about the HBA for preparing the 63 * configuration of the HBA. 64 * 65 * Return codes: 66 * 0 - success. 67 * -ERESTART - requests the SLI layer to reset the HBA and try again. 68 * Any other value - indicates an error. 69 **/ 70 int 71 lpfc_config_port_prep(struct lpfc_hba *phba) 72 { 73 lpfc_vpd_t *vp = &phba->vpd; 74 int i = 0, rc; 75 LPFC_MBOXQ_t *pmb; 76 MAILBOX_t *mb; 77 char *lpfc_vpd_data = NULL; 78 uint16_t offset = 0; 79 static char licensed[56] = 80 "key unlock for use with gnu public licensed code only\0"; 81 static int init_key = 1; 82 83 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 84 if (!pmb) { 85 phba->link_state = LPFC_HBA_ERROR; 86 return -ENOMEM; 87 } 88 89 mb = &pmb->mb; 90 phba->link_state = LPFC_INIT_MBX_CMDS; 91 92 if (lpfc_is_LC_HBA(phba->pcidev->device)) { 93 if (init_key) { 94 uint32_t *ptext = (uint32_t *) licensed; 95 96 for (i = 0; i < 56; i += sizeof (uint32_t), ptext++) 97 *ptext = cpu_to_be32(*ptext); 98 init_key = 0; 99 } 100 101 lpfc_read_nv(phba, pmb); 102 memset((char*)mb->un.varRDnvp.rsvd3, 0, 103 sizeof (mb->un.varRDnvp.rsvd3)); 104 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed, 105 sizeof (licensed)); 106 107 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); 108 109 if (rc != MBX_SUCCESS) { 110 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 111 "0324 Config Port initialization " 112 "error, mbxCmd x%x READ_NVPARM, " 113 "mbxStatus x%x\n", 114 mb->mbxCommand, mb->mbxStatus); 115 mempool_free(pmb, phba->mbox_mem_pool); 116 return -ERESTART; 117 } 118 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename, 119 sizeof(phba->wwnn)); 120 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname, 121 sizeof(phba->wwpn)); 122 } 123 124 phba->sli3_options = 0x0; 125 126 /* Setup and issue mailbox READ REV command */ 127 lpfc_read_rev(phba, pmb); 128 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); 129 if (rc != MBX_SUCCESS) { 130 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 131 "0439 Adapter failed to init, mbxCmd x%x " 132 "READ_REV, mbxStatus x%x\n", 133 mb->mbxCommand, mb->mbxStatus); 134 mempool_free( pmb, phba->mbox_mem_pool); 135 return -ERESTART; 136 } 137 138 139 /* 140 * The value of rr must be 1 since the driver set the cv field to 1. 141 * This setting requires the FW to set all revision fields. 142 */ 143 if (mb->un.varRdRev.rr == 0) { 144 vp->rev.rBit = 0; 145 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 146 "0440 Adapter failed to init, READ_REV has " 147 "missing revision information.\n"); 148 mempool_free(pmb, phba->mbox_mem_pool); 149 return -ERESTART; 150 } 151 152 if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) { 153 mempool_free(pmb, phba->mbox_mem_pool); 154 return -EINVAL; 155 } 156 157 /* Save information as VPD data */ 158 vp->rev.rBit = 1; 159 memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t)); 160 vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev; 161 memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16); 162 vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev; 163 memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16); 164 vp->rev.biuRev = mb->un.varRdRev.biuRev; 165 vp->rev.smRev = mb->un.varRdRev.smRev; 166 vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev; 167 vp->rev.endecRev = mb->un.varRdRev.endecRev; 168 vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh; 169 vp->rev.fcphLow = mb->un.varRdRev.fcphLow; 170 vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh; 171 vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow; 172 vp->rev.postKernRev = mb->un.varRdRev.postKernRev; 173 vp->rev.opFwRev = mb->un.varRdRev.opFwRev; 174 175 /* If the sli feature level is less then 9, we must 176 * tear down all RPIs and VPIs on link down if NPIV 177 * is enabled. 178 */ 179 if (vp->rev.feaLevelHigh < 9) 180 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN; 181 182 if (lpfc_is_LC_HBA(phba->pcidev->device)) 183 memcpy(phba->RandomData, (char *)&mb->un.varWords[24], 184 sizeof (phba->RandomData)); 185 186 /* Get adapter VPD information */ 187 lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL); 188 if (!lpfc_vpd_data) 189 goto out_free_mbox; 190 191 do { 192 lpfc_dump_mem(phba, pmb, offset); 193 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); 194 195 if (rc != MBX_SUCCESS) { 196 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 197 "0441 VPD not present on adapter, " 198 "mbxCmd x%x DUMP VPD, mbxStatus x%x\n", 199 mb->mbxCommand, mb->mbxStatus); 200 mb->un.varDmp.word_cnt = 0; 201 } 202 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset) 203 mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset; 204 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET, 205 lpfc_vpd_data + offset, 206 mb->un.varDmp.word_cnt); 207 offset += mb->un.varDmp.word_cnt; 208 } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE); 209 lpfc_parse_vpd(phba, lpfc_vpd_data, offset); 210 211 kfree(lpfc_vpd_data); 212 out_free_mbox: 213 mempool_free(pmb, phba->mbox_mem_pool); 214 return 0; 215 } 216 217 /** 218 * lpfc_config_async_cmpl: Completion handler for config async event mbox cmd. 219 * @phba: pointer to lpfc hba data structure. 220 * @pmboxq: pointer to the driver internal queue element for mailbox command. 221 * 222 * This is the completion handler for driver's configuring asynchronous event 223 * mailbox command to the device. If the mailbox command returns successfully, 224 * it will set internal async event support flag to 1; otherwise, it will 225 * set internal async event support flag to 0. 226 **/ 227 static void 228 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq) 229 { 230 if (pmboxq->mb.mbxStatus == MBX_SUCCESS) 231 phba->temp_sensor_support = 1; 232 else 233 phba->temp_sensor_support = 0; 234 mempool_free(pmboxq, phba->mbox_mem_pool); 235 return; 236 } 237 238 /** 239 * lpfc_config_port_post: Perform lpfc initialization after config port. 240 * @phba: pointer to lpfc hba data structure. 241 * 242 * This routine will do LPFC initialization after the CONFIG_PORT mailbox 243 * command call. It performs all internal resource and state setups on the 244 * port: post IOCB buffers, enable appropriate host interrupt attentions, 245 * ELS ring timers, etc. 246 * 247 * Return codes 248 * 0 - success. 249 * Any other value - error. 250 **/ 251 int 252 lpfc_config_port_post(struct lpfc_hba *phba) 253 { 254 struct lpfc_vport *vport = phba->pport; 255 LPFC_MBOXQ_t *pmb; 256 MAILBOX_t *mb; 257 struct lpfc_dmabuf *mp; 258 struct lpfc_sli *psli = &phba->sli; 259 uint32_t status, timeout; 260 int i, j; 261 int rc; 262 263 spin_lock_irq(&phba->hbalock); 264 /* 265 * If the Config port completed correctly the HBA is not 266 * over heated any more. 267 */ 268 if (phba->over_temp_state == HBA_OVER_TEMP) 269 phba->over_temp_state = HBA_NORMAL_TEMP; 270 spin_unlock_irq(&phba->hbalock); 271 272 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 273 if (!pmb) { 274 phba->link_state = LPFC_HBA_ERROR; 275 return -ENOMEM; 276 } 277 mb = &pmb->mb; 278 279 /* Get login parameters for NID. */ 280 lpfc_read_sparam(phba, pmb, 0); 281 pmb->vport = vport; 282 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) { 283 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 284 "0448 Adapter failed init, mbxCmd x%x " 285 "READ_SPARM mbxStatus x%x\n", 286 mb->mbxCommand, mb->mbxStatus); 287 phba->link_state = LPFC_HBA_ERROR; 288 mp = (struct lpfc_dmabuf *) pmb->context1; 289 mempool_free( pmb, phba->mbox_mem_pool); 290 lpfc_mbuf_free(phba, mp->virt, mp->phys); 291 kfree(mp); 292 return -EIO; 293 } 294 295 mp = (struct lpfc_dmabuf *) pmb->context1; 296 297 memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm)); 298 lpfc_mbuf_free(phba, mp->virt, mp->phys); 299 kfree(mp); 300 pmb->context1 = NULL; 301 302 if (phba->cfg_soft_wwnn) 303 u64_to_wwn(phba->cfg_soft_wwnn, 304 vport->fc_sparam.nodeName.u.wwn); 305 if (phba->cfg_soft_wwpn) 306 u64_to_wwn(phba->cfg_soft_wwpn, 307 vport->fc_sparam.portName.u.wwn); 308 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, 309 sizeof (struct lpfc_name)); 310 memcpy(&vport->fc_portname, &vport->fc_sparam.portName, 311 sizeof (struct lpfc_name)); 312 /* If no serial number in VPD data, use low 6 bytes of WWNN */ 313 /* This should be consolidated into parse_vpd ? - mr */ 314 if (phba->SerialNumber[0] == 0) { 315 uint8_t *outptr; 316 317 outptr = &vport->fc_nodename.u.s.IEEE[0]; 318 for (i = 0; i < 12; i++) { 319 status = *outptr++; 320 j = ((status & 0xf0) >> 4); 321 if (j <= 9) 322 phba->SerialNumber[i] = 323 (char)((uint8_t) 0x30 + (uint8_t) j); 324 else 325 phba->SerialNumber[i] = 326 (char)((uint8_t) 0x61 + (uint8_t) (j - 10)); 327 i++; 328 j = (status & 0xf); 329 if (j <= 9) 330 phba->SerialNumber[i] = 331 (char)((uint8_t) 0x30 + (uint8_t) j); 332 else 333 phba->SerialNumber[i] = 334 (char)((uint8_t) 0x61 + (uint8_t) (j - 10)); 335 } 336 } 337 338 lpfc_read_config(phba, pmb); 339 pmb->vport = vport; 340 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) { 341 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 342 "0453 Adapter failed to init, mbxCmd x%x " 343 "READ_CONFIG, mbxStatus x%x\n", 344 mb->mbxCommand, mb->mbxStatus); 345 phba->link_state = LPFC_HBA_ERROR; 346 mempool_free( pmb, phba->mbox_mem_pool); 347 return -EIO; 348 } 349 350 /* Reset the DFT_HBA_Q_DEPTH to the max xri */ 351 if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1)) 352 phba->cfg_hba_queue_depth = 353 mb->un.varRdConfig.max_xri + 1; 354 355 phba->lmt = mb->un.varRdConfig.lmt; 356 357 /* Get the default values for Model Name and Description */ 358 lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc); 359 360 if ((phba->cfg_link_speed > LINK_SPEED_10G) 361 || ((phba->cfg_link_speed == LINK_SPEED_1G) 362 && !(phba->lmt & LMT_1Gb)) 363 || ((phba->cfg_link_speed == LINK_SPEED_2G) 364 && !(phba->lmt & LMT_2Gb)) 365 || ((phba->cfg_link_speed == LINK_SPEED_4G) 366 && !(phba->lmt & LMT_4Gb)) 367 || ((phba->cfg_link_speed == LINK_SPEED_8G) 368 && !(phba->lmt & LMT_8Gb)) 369 || ((phba->cfg_link_speed == LINK_SPEED_10G) 370 && !(phba->lmt & LMT_10Gb))) { 371 /* Reset link speed to auto */ 372 lpfc_printf_log(phba, KERN_WARNING, LOG_LINK_EVENT, 373 "1302 Invalid speed for this board: " 374 "Reset link speed to auto: x%x\n", 375 phba->cfg_link_speed); 376 phba->cfg_link_speed = LINK_SPEED_AUTO; 377 } 378 379 phba->link_state = LPFC_LINK_DOWN; 380 381 /* Only process IOCBs on ELS ring till hba_state is READY */ 382 if (psli->ring[psli->extra_ring].cmdringaddr) 383 psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT; 384 if (psli->ring[psli->fcp_ring].cmdringaddr) 385 psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT; 386 if (psli->ring[psli->next_ring].cmdringaddr) 387 psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT; 388 389 /* Post receive buffers for desired rings */ 390 if (phba->sli_rev != 3) 391 lpfc_post_rcv_buf(phba); 392 393 /* 394 * Configure HBA MSI-X attention conditions to messages if MSI-X mode 395 */ 396 if (phba->intr_type == MSIX) { 397 rc = lpfc_config_msi(phba, pmb); 398 if (rc) { 399 mempool_free(pmb, phba->mbox_mem_pool); 400 return -EIO; 401 } 402 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); 403 if (rc != MBX_SUCCESS) { 404 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 405 "0352 Config MSI mailbox command " 406 "failed, mbxCmd x%x, mbxStatus x%x\n", 407 pmb->mb.mbxCommand, pmb->mb.mbxStatus); 408 mempool_free(pmb, phba->mbox_mem_pool); 409 return -EIO; 410 } 411 } 412 413 /* Initialize ERATT handling flag */ 414 phba->hba_flag &= ~HBA_ERATT_HANDLED; 415 416 /* Enable appropriate host interrupts */ 417 spin_lock_irq(&phba->hbalock); 418 status = readl(phba->HCregaddr); 419 status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA; 420 if (psli->num_rings > 0) 421 status |= HC_R0INT_ENA; 422 if (psli->num_rings > 1) 423 status |= HC_R1INT_ENA; 424 if (psli->num_rings > 2) 425 status |= HC_R2INT_ENA; 426 if (psli->num_rings > 3) 427 status |= HC_R3INT_ENA; 428 429 if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) && 430 (phba->cfg_poll & DISABLE_FCP_RING_INT)) 431 status &= ~(HC_R0INT_ENA); 432 433 writel(status, phba->HCregaddr); 434 readl(phba->HCregaddr); /* flush */ 435 spin_unlock_irq(&phba->hbalock); 436 437 /* Set up ring-0 (ELS) timer */ 438 timeout = phba->fc_ratov * 2; 439 mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout); 440 /* Set up heart beat (HB) timer */ 441 mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL); 442 phba->hb_outstanding = 0; 443 phba->last_completion_time = jiffies; 444 /* Set up error attention (ERATT) polling timer */ 445 mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL); 446 447 lpfc_init_link(phba, pmb, phba->cfg_topology, phba->cfg_link_speed); 448 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 449 lpfc_set_loopback_flag(phba); 450 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); 451 if (rc != MBX_SUCCESS) { 452 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 453 "0454 Adapter failed to init, mbxCmd x%x " 454 "INIT_LINK, mbxStatus x%x\n", 455 mb->mbxCommand, mb->mbxStatus); 456 457 /* Clear all interrupt enable conditions */ 458 writel(0, phba->HCregaddr); 459 readl(phba->HCregaddr); /* flush */ 460 /* Clear all pending interrupts */ 461 writel(0xffffffff, phba->HAregaddr); 462 readl(phba->HAregaddr); /* flush */ 463 464 phba->link_state = LPFC_HBA_ERROR; 465 if (rc != MBX_BUSY) 466 mempool_free(pmb, phba->mbox_mem_pool); 467 return -EIO; 468 } 469 /* MBOX buffer will be freed in mbox compl */ 470 pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 471 lpfc_config_async(phba, pmb, LPFC_ELS_RING); 472 pmb->mbox_cmpl = lpfc_config_async_cmpl; 473 pmb->vport = phba->pport; 474 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT); 475 476 if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) { 477 lpfc_printf_log(phba, 478 KERN_ERR, 479 LOG_INIT, 480 "0456 Adapter failed to issue " 481 "ASYNCEVT_ENABLE mbox status x%x \n.", 482 rc); 483 mempool_free(pmb, phba->mbox_mem_pool); 484 } 485 return 0; 486 } 487 488 /** 489 * lpfc_hba_down_prep: Perform lpfc uninitialization prior to HBA reset. 490 * @phba: pointer to lpfc HBA data structure. 491 * 492 * This routine will do LPFC uninitialization before the HBA is reset when 493 * bringing down the SLI Layer. 494 * 495 * Return codes 496 * 0 - success. 497 * Any other value - error. 498 **/ 499 int 500 lpfc_hba_down_prep(struct lpfc_hba *phba) 501 { 502 struct lpfc_vport **vports; 503 int i; 504 /* Disable interrupts */ 505 writel(0, phba->HCregaddr); 506 readl(phba->HCregaddr); /* flush */ 507 508 if (phba->pport->load_flag & FC_UNLOADING) 509 lpfc_cleanup_discovery_resources(phba->pport); 510 else { 511 vports = lpfc_create_vport_work_array(phba); 512 if (vports != NULL) 513 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) 514 lpfc_cleanup_discovery_resources(vports[i]); 515 lpfc_destroy_vport_work_array(phba, vports); 516 } 517 return 0; 518 } 519 520 /** 521 * lpfc_hba_down_post: Perform lpfc uninitialization after HBA reset. 522 * @phba: pointer to lpfc HBA data structure. 523 * 524 * This routine will do uninitialization after the HBA is reset when bring 525 * down the SLI Layer. 526 * 527 * Return codes 528 * 0 - sucess. 529 * Any other value - error. 530 **/ 531 int 532 lpfc_hba_down_post(struct lpfc_hba *phba) 533 { 534 struct lpfc_sli *psli = &phba->sli; 535 struct lpfc_sli_ring *pring; 536 struct lpfc_dmabuf *mp, *next_mp; 537 struct lpfc_iocbq *iocb; 538 IOCB_t *cmd = NULL; 539 LIST_HEAD(completions); 540 int i; 541 542 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) 543 lpfc_sli_hbqbuf_free_all(phba); 544 else { 545 /* Cleanup preposted buffers on the ELS ring */ 546 pring = &psli->ring[LPFC_ELS_RING]; 547 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { 548 list_del(&mp->list); 549 pring->postbufq_cnt--; 550 lpfc_mbuf_free(phba, mp->virt, mp->phys); 551 kfree(mp); 552 } 553 } 554 555 spin_lock_irq(&phba->hbalock); 556 for (i = 0; i < psli->num_rings; i++) { 557 pring = &psli->ring[i]; 558 559 /* At this point in time the HBA is either reset or DOA. Either 560 * way, nothing should be on txcmplq as it will NEVER complete. 561 */ 562 list_splice_init(&pring->txcmplq, &completions); 563 pring->txcmplq_cnt = 0; 564 spin_unlock_irq(&phba->hbalock); 565 566 while (!list_empty(&completions)) { 567 iocb = list_get_first(&completions, struct lpfc_iocbq, 568 list); 569 cmd = &iocb->iocb; 570 list_del_init(&iocb->list); 571 572 if (!iocb->iocb_cmpl) 573 lpfc_sli_release_iocbq(phba, iocb); 574 else { 575 cmd->ulpStatus = IOSTAT_LOCAL_REJECT; 576 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 577 (iocb->iocb_cmpl) (phba, iocb, iocb); 578 } 579 } 580 581 lpfc_sli_abort_iocb_ring(phba, pring); 582 spin_lock_irq(&phba->hbalock); 583 } 584 spin_unlock_irq(&phba->hbalock); 585 586 return 0; 587 } 588 589 /** 590 * lpfc_hb_timeout: The HBA-timer timeout handler. 591 * @ptr: unsigned long holds the pointer to lpfc hba data structure. 592 * 593 * This is the HBA-timer timeout handler registered to the lpfc driver. When 594 * this timer fires, a HBA timeout event shall be posted to the lpfc driver 595 * work-port-events bitmap and the worker thread is notified. This timeout 596 * event will be used by the worker thread to invoke the actual timeout 597 * handler routine, lpfc_hb_timeout_handler. Any periodical operations will 598 * be performed in the timeout handler and the HBA timeout event bit shall 599 * be cleared by the worker thread after it has taken the event bitmap out. 600 **/ 601 static void 602 lpfc_hb_timeout(unsigned long ptr) 603 { 604 struct lpfc_hba *phba; 605 uint32_t tmo_posted; 606 unsigned long iflag; 607 608 phba = (struct lpfc_hba *)ptr; 609 610 /* Check for heart beat timeout conditions */ 611 spin_lock_irqsave(&phba->pport->work_port_lock, iflag); 612 tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO; 613 if (!tmo_posted) 614 phba->pport->work_port_events |= WORKER_HB_TMO; 615 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag); 616 617 /* Tell the worker thread there is work to do */ 618 if (!tmo_posted) 619 lpfc_worker_wake_up(phba); 620 return; 621 } 622 623 /** 624 * lpfc_hb_mbox_cmpl: The lpfc heart-beat mailbox command callback function. 625 * @phba: pointer to lpfc hba data structure. 626 * @pmboxq: pointer to the driver internal queue element for mailbox command. 627 * 628 * This is the callback function to the lpfc heart-beat mailbox command. 629 * If configured, the lpfc driver issues the heart-beat mailbox command to 630 * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the 631 * heart-beat mailbox command is issued, the driver shall set up heart-beat 632 * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks 633 * heart-beat outstanding state. Once the mailbox command comes back and 634 * no error conditions detected, the heart-beat mailbox command timer is 635 * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding 636 * state is cleared for the next heart-beat. If the timer expired with the 637 * heart-beat outstanding state set, the driver will put the HBA offline. 638 **/ 639 static void 640 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq) 641 { 642 unsigned long drvr_flag; 643 644 spin_lock_irqsave(&phba->hbalock, drvr_flag); 645 phba->hb_outstanding = 0; 646 spin_unlock_irqrestore(&phba->hbalock, drvr_flag); 647 648 /* Check and reset heart-beat timer is necessary */ 649 mempool_free(pmboxq, phba->mbox_mem_pool); 650 if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) && 651 !(phba->link_state == LPFC_HBA_ERROR) && 652 !(phba->pport->load_flag & FC_UNLOADING)) 653 mod_timer(&phba->hb_tmofunc, 654 jiffies + HZ * LPFC_HB_MBOX_INTERVAL); 655 return; 656 } 657 658 /** 659 * lpfc_hb_timeout_handler: The HBA-timer timeout handler. 660 * @phba: pointer to lpfc hba data structure. 661 * 662 * This is the actual HBA-timer timeout handler to be invoked by the worker 663 * thread whenever the HBA timer fired and HBA-timeout event posted. This 664 * handler performs any periodic operations needed for the device. If such 665 * periodic event has already been attended to either in the interrupt handler 666 * or by processing slow-ring or fast-ring events within the HBA-timer 667 * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets 668 * the timer for the next timeout period. If lpfc heart-beat mailbox command 669 * is configured and there is no heart-beat mailbox command outstanding, a 670 * heart-beat mailbox is issued and timer set properly. Otherwise, if there 671 * has been a heart-beat mailbox command outstanding, the HBA shall be put 672 * to offline. 673 **/ 674 void 675 lpfc_hb_timeout_handler(struct lpfc_hba *phba) 676 { 677 LPFC_MBOXQ_t *pmboxq; 678 struct lpfc_dmabuf *buf_ptr; 679 int retval; 680 struct lpfc_sli *psli = &phba->sli; 681 LIST_HEAD(completions); 682 683 if ((phba->link_state == LPFC_HBA_ERROR) || 684 (phba->pport->load_flag & FC_UNLOADING) || 685 (phba->pport->fc_flag & FC_OFFLINE_MODE)) 686 return; 687 688 spin_lock_irq(&phba->pport->work_port_lock); 689 /* If the timer is already canceled do nothing */ 690 if (!(phba->pport->work_port_events & WORKER_HB_TMO)) { 691 spin_unlock_irq(&phba->pport->work_port_lock); 692 return; 693 } 694 695 if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ, 696 jiffies)) { 697 spin_unlock_irq(&phba->pport->work_port_lock); 698 if (!phba->hb_outstanding) 699 mod_timer(&phba->hb_tmofunc, 700 jiffies + HZ * LPFC_HB_MBOX_INTERVAL); 701 else 702 mod_timer(&phba->hb_tmofunc, 703 jiffies + HZ * LPFC_HB_MBOX_TIMEOUT); 704 return; 705 } 706 spin_unlock_irq(&phba->pport->work_port_lock); 707 708 if (phba->elsbuf_cnt && 709 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) { 710 spin_lock_irq(&phba->hbalock); 711 list_splice_init(&phba->elsbuf, &completions); 712 phba->elsbuf_cnt = 0; 713 phba->elsbuf_prev_cnt = 0; 714 spin_unlock_irq(&phba->hbalock); 715 716 while (!list_empty(&completions)) { 717 list_remove_head(&completions, buf_ptr, 718 struct lpfc_dmabuf, list); 719 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 720 kfree(buf_ptr); 721 } 722 } 723 phba->elsbuf_prev_cnt = phba->elsbuf_cnt; 724 725 /* If there is no heart beat outstanding, issue a heartbeat command */ 726 if (phba->cfg_enable_hba_heartbeat) { 727 if (!phba->hb_outstanding) { 728 pmboxq = mempool_alloc(phba->mbox_mem_pool,GFP_KERNEL); 729 if (!pmboxq) { 730 mod_timer(&phba->hb_tmofunc, 731 jiffies + HZ * LPFC_HB_MBOX_INTERVAL); 732 return; 733 } 734 735 lpfc_heart_beat(phba, pmboxq); 736 pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl; 737 pmboxq->vport = phba->pport; 738 retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT); 739 740 if (retval != MBX_BUSY && retval != MBX_SUCCESS) { 741 mempool_free(pmboxq, phba->mbox_mem_pool); 742 mod_timer(&phba->hb_tmofunc, 743 jiffies + HZ * LPFC_HB_MBOX_INTERVAL); 744 return; 745 } 746 mod_timer(&phba->hb_tmofunc, 747 jiffies + HZ * LPFC_HB_MBOX_TIMEOUT); 748 phba->hb_outstanding = 1; 749 return; 750 } else { 751 /* 752 * If heart beat timeout called with hb_outstanding set 753 * we need to take the HBA offline. 754 */ 755 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 756 "0459 Adapter heartbeat failure, " 757 "taking this port offline.\n"); 758 759 spin_lock_irq(&phba->hbalock); 760 psli->sli_flag &= ~LPFC_SLI2_ACTIVE; 761 spin_unlock_irq(&phba->hbalock); 762 763 lpfc_offline_prep(phba); 764 lpfc_offline(phba); 765 lpfc_unblock_mgmt_io(phba); 766 phba->link_state = LPFC_HBA_ERROR; 767 lpfc_hba_down_post(phba); 768 } 769 } 770 } 771 772 /** 773 * lpfc_offline_eratt: Bring lpfc offline on hardware error attention. 774 * @phba: pointer to lpfc hba data structure. 775 * 776 * This routine is called to bring the HBA offline when HBA hardware error 777 * other than Port Error 6 has been detected. 778 **/ 779 static void 780 lpfc_offline_eratt(struct lpfc_hba *phba) 781 { 782 struct lpfc_sli *psli = &phba->sli; 783 784 spin_lock_irq(&phba->hbalock); 785 psli->sli_flag &= ~LPFC_SLI2_ACTIVE; 786 spin_unlock_irq(&phba->hbalock); 787 lpfc_offline_prep(phba); 788 789 lpfc_offline(phba); 790 lpfc_reset_barrier(phba); 791 lpfc_sli_brdreset(phba); 792 lpfc_hba_down_post(phba); 793 lpfc_sli_brdready(phba, HS_MBRDY); 794 lpfc_unblock_mgmt_io(phba); 795 phba->link_state = LPFC_HBA_ERROR; 796 return; 797 } 798 799 /** 800 * lpfc_handle_eratt: The HBA hardware error handler. 801 * @phba: pointer to lpfc hba data structure. 802 * 803 * This routine is invoked to handle the following HBA hardware error 804 * conditions: 805 * 1 - HBA error attention interrupt 806 * 2 - DMA ring index out of range 807 * 3 - Mailbox command came back as unknown 808 **/ 809 void 810 lpfc_handle_eratt(struct lpfc_hba *phba) 811 { 812 struct lpfc_vport *vport = phba->pport; 813 struct lpfc_sli *psli = &phba->sli; 814 struct lpfc_sli_ring *pring; 815 uint32_t event_data; 816 unsigned long temperature; 817 struct temp_event temp_event_data; 818 struct Scsi_Host *shost; 819 struct lpfc_board_event_header board_event; 820 821 /* If the pci channel is offline, ignore possible errors, 822 * since we cannot communicate with the pci card anyway. */ 823 if (pci_channel_offline(phba->pcidev)) 824 return; 825 /* If resets are disabled then leave the HBA alone and return */ 826 if (!phba->cfg_enable_hba_reset) 827 return; 828 829 /* Send an internal error event to mgmt application */ 830 board_event.event_type = FC_REG_BOARD_EVENT; 831 board_event.subcategory = LPFC_EVENT_PORTINTERR; 832 shost = lpfc_shost_from_vport(phba->pport); 833 fc_host_post_vendor_event(shost, fc_get_event_number(), 834 sizeof(board_event), 835 (char *) &board_event, 836 LPFC_NL_VENDOR_ID); 837 838 if (phba->work_hs & HS_FFER6) { 839 /* Re-establishing Link */ 840 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 841 "1301 Re-establishing Link " 842 "Data: x%x x%x x%x\n", 843 phba->work_hs, 844 phba->work_status[0], phba->work_status[1]); 845 846 spin_lock_irq(&phba->hbalock); 847 psli->sli_flag &= ~LPFC_SLI2_ACTIVE; 848 spin_unlock_irq(&phba->hbalock); 849 850 /* 851 * Firmware stops when it triggled erratt with HS_FFER6. 852 * That could cause the I/Os dropped by the firmware. 853 * Error iocb (I/O) on txcmplq and let the SCSI layer 854 * retry it after re-establishing link. 855 */ 856 pring = &psli->ring[psli->fcp_ring]; 857 lpfc_sli_abort_iocb_ring(phba, pring); 858 859 /* 860 * There was a firmware error. Take the hba offline and then 861 * attempt to restart it. 862 */ 863 lpfc_offline_prep(phba); 864 lpfc_offline(phba); 865 lpfc_sli_brdrestart(phba); 866 if (lpfc_online(phba) == 0) { /* Initialize the HBA */ 867 lpfc_unblock_mgmt_io(phba); 868 return; 869 } 870 lpfc_unblock_mgmt_io(phba); 871 } else if (phba->work_hs & HS_CRIT_TEMP) { 872 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET); 873 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT; 874 temp_event_data.event_code = LPFC_CRIT_TEMP; 875 temp_event_data.data = (uint32_t)temperature; 876 877 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 878 "0406 Adapter maximum temperature exceeded " 879 "(%ld), taking this port offline " 880 "Data: x%x x%x x%x\n", 881 temperature, phba->work_hs, 882 phba->work_status[0], phba->work_status[1]); 883 884 shost = lpfc_shost_from_vport(phba->pport); 885 fc_host_post_vendor_event(shost, fc_get_event_number(), 886 sizeof(temp_event_data), 887 (char *) &temp_event_data, 888 SCSI_NL_VID_TYPE_PCI 889 | PCI_VENDOR_ID_EMULEX); 890 891 spin_lock_irq(&phba->hbalock); 892 phba->over_temp_state = HBA_OVER_TEMP; 893 spin_unlock_irq(&phba->hbalock); 894 lpfc_offline_eratt(phba); 895 896 } else { 897 /* The if clause above forces this code path when the status 898 * failure is a value other than FFER6. Do not call the offline 899 * twice. This is the adapter hardware error path. 900 */ 901 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 902 "0457 Adapter Hardware Error " 903 "Data: x%x x%x x%x\n", 904 phba->work_hs, 905 phba->work_status[0], phba->work_status[1]); 906 907 event_data = FC_REG_DUMP_EVENT; 908 shost = lpfc_shost_from_vport(vport); 909 fc_host_post_vendor_event(shost, fc_get_event_number(), 910 sizeof(event_data), (char *) &event_data, 911 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX); 912 913 lpfc_offline_eratt(phba); 914 } 915 return; 916 } 917 918 /** 919 * lpfc_handle_latt: The HBA link event handler. 920 * @phba: pointer to lpfc hba data structure. 921 * 922 * This routine is invoked from the worker thread to handle a HBA host 923 * attention link event. 924 **/ 925 void 926 lpfc_handle_latt(struct lpfc_hba *phba) 927 { 928 struct lpfc_vport *vport = phba->pport; 929 struct lpfc_sli *psli = &phba->sli; 930 LPFC_MBOXQ_t *pmb; 931 volatile uint32_t control; 932 struct lpfc_dmabuf *mp; 933 int rc = 0; 934 935 pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 936 if (!pmb) { 937 rc = 1; 938 goto lpfc_handle_latt_err_exit; 939 } 940 941 mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 942 if (!mp) { 943 rc = 2; 944 goto lpfc_handle_latt_free_pmb; 945 } 946 947 mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys); 948 if (!mp->virt) { 949 rc = 3; 950 goto lpfc_handle_latt_free_mp; 951 } 952 953 /* Cleanup any outstanding ELS commands */ 954 lpfc_els_flush_all_cmd(phba); 955 956 psli->slistat.link_event++; 957 lpfc_read_la(phba, pmb, mp); 958 pmb->mbox_cmpl = lpfc_mbx_cmpl_read_la; 959 pmb->vport = vport; 960 /* Block ELS IOCBs until we have processed this mbox command */ 961 phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT; 962 rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT); 963 if (rc == MBX_NOT_FINISHED) { 964 rc = 4; 965 goto lpfc_handle_latt_free_mbuf; 966 } 967 968 /* Clear Link Attention in HA REG */ 969 spin_lock_irq(&phba->hbalock); 970 writel(HA_LATT, phba->HAregaddr); 971 readl(phba->HAregaddr); /* flush */ 972 spin_unlock_irq(&phba->hbalock); 973 974 return; 975 976 lpfc_handle_latt_free_mbuf: 977 phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT; 978 lpfc_mbuf_free(phba, mp->virt, mp->phys); 979 lpfc_handle_latt_free_mp: 980 kfree(mp); 981 lpfc_handle_latt_free_pmb: 982 mempool_free(pmb, phba->mbox_mem_pool); 983 lpfc_handle_latt_err_exit: 984 /* Enable Link attention interrupts */ 985 spin_lock_irq(&phba->hbalock); 986 psli->sli_flag |= LPFC_PROCESS_LA; 987 control = readl(phba->HCregaddr); 988 control |= HC_LAINT_ENA; 989 writel(control, phba->HCregaddr); 990 readl(phba->HCregaddr); /* flush */ 991 992 /* Clear Link Attention in HA REG */ 993 writel(HA_LATT, phba->HAregaddr); 994 readl(phba->HAregaddr); /* flush */ 995 spin_unlock_irq(&phba->hbalock); 996 lpfc_linkdown(phba); 997 phba->link_state = LPFC_HBA_ERROR; 998 999 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 1000 "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc); 1001 1002 return; 1003 } 1004 1005 /** 1006 * lpfc_parse_vpd: Parse VPD (Vital Product Data). 1007 * @phba: pointer to lpfc hba data structure. 1008 * @vpd: pointer to the vital product data. 1009 * @len: length of the vital product data in bytes. 1010 * 1011 * This routine parses the Vital Product Data (VPD). The VPD is treated as 1012 * an array of characters. In this routine, the ModelName, ProgramType, and 1013 * ModelDesc, etc. fields of the phba data structure will be populated. 1014 * 1015 * Return codes 1016 * 0 - pointer to the VPD passed in is NULL 1017 * 1 - success 1018 **/ 1019 static int 1020 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len) 1021 { 1022 uint8_t lenlo, lenhi; 1023 int Length; 1024 int i, j; 1025 int finished = 0; 1026 int index = 0; 1027 1028 if (!vpd) 1029 return 0; 1030 1031 /* Vital Product */ 1032 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 1033 "0455 Vital Product Data: x%x x%x x%x x%x\n", 1034 (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2], 1035 (uint32_t) vpd[3]); 1036 while (!finished && (index < (len - 4))) { 1037 switch (vpd[index]) { 1038 case 0x82: 1039 case 0x91: 1040 index += 1; 1041 lenlo = vpd[index]; 1042 index += 1; 1043 lenhi = vpd[index]; 1044 index += 1; 1045 i = ((((unsigned short)lenhi) << 8) + lenlo); 1046 index += i; 1047 break; 1048 case 0x90: 1049 index += 1; 1050 lenlo = vpd[index]; 1051 index += 1; 1052 lenhi = vpd[index]; 1053 index += 1; 1054 Length = ((((unsigned short)lenhi) << 8) + lenlo); 1055 if (Length > len - index) 1056 Length = len - index; 1057 while (Length > 0) { 1058 /* Look for Serial Number */ 1059 if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) { 1060 index += 2; 1061 i = vpd[index]; 1062 index += 1; 1063 j = 0; 1064 Length -= (3+i); 1065 while(i--) { 1066 phba->SerialNumber[j++] = vpd[index++]; 1067 if (j == 31) 1068 break; 1069 } 1070 phba->SerialNumber[j] = 0; 1071 continue; 1072 } 1073 else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) { 1074 phba->vpd_flag |= VPD_MODEL_DESC; 1075 index += 2; 1076 i = vpd[index]; 1077 index += 1; 1078 j = 0; 1079 Length -= (3+i); 1080 while(i--) { 1081 phba->ModelDesc[j++] = vpd[index++]; 1082 if (j == 255) 1083 break; 1084 } 1085 phba->ModelDesc[j] = 0; 1086 continue; 1087 } 1088 else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) { 1089 phba->vpd_flag |= VPD_MODEL_NAME; 1090 index += 2; 1091 i = vpd[index]; 1092 index += 1; 1093 j = 0; 1094 Length -= (3+i); 1095 while(i--) { 1096 phba->ModelName[j++] = vpd[index++]; 1097 if (j == 79) 1098 break; 1099 } 1100 phba->ModelName[j] = 0; 1101 continue; 1102 } 1103 else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) { 1104 phba->vpd_flag |= VPD_PROGRAM_TYPE; 1105 index += 2; 1106 i = vpd[index]; 1107 index += 1; 1108 j = 0; 1109 Length -= (3+i); 1110 while(i--) { 1111 phba->ProgramType[j++] = vpd[index++]; 1112 if (j == 255) 1113 break; 1114 } 1115 phba->ProgramType[j] = 0; 1116 continue; 1117 } 1118 else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) { 1119 phba->vpd_flag |= VPD_PORT; 1120 index += 2; 1121 i = vpd[index]; 1122 index += 1; 1123 j = 0; 1124 Length -= (3+i); 1125 while(i--) { 1126 phba->Port[j++] = vpd[index++]; 1127 if (j == 19) 1128 break; 1129 } 1130 phba->Port[j] = 0; 1131 continue; 1132 } 1133 else { 1134 index += 2; 1135 i = vpd[index]; 1136 index += 1; 1137 index += i; 1138 Length -= (3 + i); 1139 } 1140 } 1141 finished = 0; 1142 break; 1143 case 0x78: 1144 finished = 1; 1145 break; 1146 default: 1147 index ++; 1148 break; 1149 } 1150 } 1151 1152 return(1); 1153 } 1154 1155 /** 1156 * lpfc_get_hba_model_desc: Retrieve HBA device model name and description. 1157 * @phba: pointer to lpfc hba data structure. 1158 * @mdp: pointer to the data structure to hold the derived model name. 1159 * @descp: pointer to the data structure to hold the derived description. 1160 * 1161 * This routine retrieves HBA's description based on its registered PCI device 1162 * ID. The @descp passed into this function points to an array of 256 chars. It 1163 * shall be returned with the model name, maximum speed, and the host bus type. 1164 * The @mdp passed into this function points to an array of 80 chars. When the 1165 * function returns, the @mdp will be filled with the model name. 1166 **/ 1167 static void 1168 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp) 1169 { 1170 lpfc_vpd_t *vp; 1171 uint16_t dev_id = phba->pcidev->device; 1172 int max_speed; 1173 int GE = 0; 1174 struct { 1175 char * name; 1176 int max_speed; 1177 char * bus; 1178 } m = {"<Unknown>", 0, ""}; 1179 1180 if (mdp && mdp[0] != '\0' 1181 && descp && descp[0] != '\0') 1182 return; 1183 1184 if (phba->lmt & LMT_10Gb) 1185 max_speed = 10; 1186 else if (phba->lmt & LMT_8Gb) 1187 max_speed = 8; 1188 else if (phba->lmt & LMT_4Gb) 1189 max_speed = 4; 1190 else if (phba->lmt & LMT_2Gb) 1191 max_speed = 2; 1192 else 1193 max_speed = 1; 1194 1195 vp = &phba->vpd; 1196 1197 switch (dev_id) { 1198 case PCI_DEVICE_ID_FIREFLY: 1199 m = (typeof(m)){"LP6000", max_speed, "PCI"}; 1200 break; 1201 case PCI_DEVICE_ID_SUPERFLY: 1202 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3) 1203 m = (typeof(m)){"LP7000", max_speed, "PCI"}; 1204 else 1205 m = (typeof(m)){"LP7000E", max_speed, "PCI"}; 1206 break; 1207 case PCI_DEVICE_ID_DRAGONFLY: 1208 m = (typeof(m)){"LP8000", max_speed, "PCI"}; 1209 break; 1210 case PCI_DEVICE_ID_CENTAUR: 1211 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID) 1212 m = (typeof(m)){"LP9002", max_speed, "PCI"}; 1213 else 1214 m = (typeof(m)){"LP9000", max_speed, "PCI"}; 1215 break; 1216 case PCI_DEVICE_ID_RFLY: 1217 m = (typeof(m)){"LP952", max_speed, "PCI"}; 1218 break; 1219 case PCI_DEVICE_ID_PEGASUS: 1220 m = (typeof(m)){"LP9802", max_speed, "PCI-X"}; 1221 break; 1222 case PCI_DEVICE_ID_THOR: 1223 m = (typeof(m)){"LP10000", max_speed, "PCI-X"}; 1224 break; 1225 case PCI_DEVICE_ID_VIPER: 1226 m = (typeof(m)){"LPX1000", max_speed, "PCI-X"}; 1227 break; 1228 case PCI_DEVICE_ID_PFLY: 1229 m = (typeof(m)){"LP982", max_speed, "PCI-X"}; 1230 break; 1231 case PCI_DEVICE_ID_TFLY: 1232 m = (typeof(m)){"LP1050", max_speed, "PCI-X"}; 1233 break; 1234 case PCI_DEVICE_ID_HELIOS: 1235 m = (typeof(m)){"LP11000", max_speed, "PCI-X2"}; 1236 break; 1237 case PCI_DEVICE_ID_HELIOS_SCSP: 1238 m = (typeof(m)){"LP11000-SP", max_speed, "PCI-X2"}; 1239 break; 1240 case PCI_DEVICE_ID_HELIOS_DCSP: 1241 m = (typeof(m)){"LP11002-SP", max_speed, "PCI-X2"}; 1242 break; 1243 case PCI_DEVICE_ID_NEPTUNE: 1244 m = (typeof(m)){"LPe1000", max_speed, "PCIe"}; 1245 break; 1246 case PCI_DEVICE_ID_NEPTUNE_SCSP: 1247 m = (typeof(m)){"LPe1000-SP", max_speed, "PCIe"}; 1248 break; 1249 case PCI_DEVICE_ID_NEPTUNE_DCSP: 1250 m = (typeof(m)){"LPe1002-SP", max_speed, "PCIe"}; 1251 break; 1252 case PCI_DEVICE_ID_BMID: 1253 m = (typeof(m)){"LP1150", max_speed, "PCI-X2"}; 1254 break; 1255 case PCI_DEVICE_ID_BSMB: 1256 m = (typeof(m)){"LP111", max_speed, "PCI-X2"}; 1257 break; 1258 case PCI_DEVICE_ID_ZEPHYR: 1259 m = (typeof(m)){"LPe11000", max_speed, "PCIe"}; 1260 break; 1261 case PCI_DEVICE_ID_ZEPHYR_SCSP: 1262 m = (typeof(m)){"LPe11000", max_speed, "PCIe"}; 1263 break; 1264 case PCI_DEVICE_ID_ZEPHYR_DCSP: 1265 m = (typeof(m)){"LPe11002-SP", max_speed, "PCIe"}; 1266 break; 1267 case PCI_DEVICE_ID_ZMID: 1268 m = (typeof(m)){"LPe1150", max_speed, "PCIe"}; 1269 break; 1270 case PCI_DEVICE_ID_ZSMB: 1271 m = (typeof(m)){"LPe111", max_speed, "PCIe"}; 1272 break; 1273 case PCI_DEVICE_ID_LP101: 1274 m = (typeof(m)){"LP101", max_speed, "PCI-X"}; 1275 break; 1276 case PCI_DEVICE_ID_LP10000S: 1277 m = (typeof(m)){"LP10000-S", max_speed, "PCI"}; 1278 break; 1279 case PCI_DEVICE_ID_LP11000S: 1280 m = (typeof(m)){"LP11000-S", max_speed, 1281 "PCI-X2"}; 1282 break; 1283 case PCI_DEVICE_ID_LPE11000S: 1284 m = (typeof(m)){"LPe11000-S", max_speed, 1285 "PCIe"}; 1286 break; 1287 case PCI_DEVICE_ID_SAT: 1288 m = (typeof(m)){"LPe12000", max_speed, "PCIe"}; 1289 break; 1290 case PCI_DEVICE_ID_SAT_MID: 1291 m = (typeof(m)){"LPe1250", max_speed, "PCIe"}; 1292 break; 1293 case PCI_DEVICE_ID_SAT_SMB: 1294 m = (typeof(m)){"LPe121", max_speed, "PCIe"}; 1295 break; 1296 case PCI_DEVICE_ID_SAT_DCSP: 1297 m = (typeof(m)){"LPe12002-SP", max_speed, "PCIe"}; 1298 break; 1299 case PCI_DEVICE_ID_SAT_SCSP: 1300 m = (typeof(m)){"LPe12000-SP", max_speed, "PCIe"}; 1301 break; 1302 case PCI_DEVICE_ID_SAT_S: 1303 m = (typeof(m)){"LPe12000-S", max_speed, "PCIe"}; 1304 break; 1305 case PCI_DEVICE_ID_HORNET: 1306 m = (typeof(m)){"LP21000", max_speed, "PCIe"}; 1307 GE = 1; 1308 break; 1309 case PCI_DEVICE_ID_PROTEUS_VF: 1310 m = (typeof(m)) {"LPev12000", max_speed, "PCIe IOV"}; 1311 break; 1312 case PCI_DEVICE_ID_PROTEUS_PF: 1313 m = (typeof(m)) {"LPev12000", max_speed, "PCIe IOV"}; 1314 break; 1315 case PCI_DEVICE_ID_PROTEUS_S: 1316 m = (typeof(m)) {"LPemv12002-S", max_speed, "PCIe IOV"}; 1317 break; 1318 default: 1319 m = (typeof(m)){ NULL }; 1320 break; 1321 } 1322 1323 if (mdp && mdp[0] == '\0') 1324 snprintf(mdp, 79,"%s", m.name); 1325 if (descp && descp[0] == '\0') 1326 snprintf(descp, 255, 1327 "Emulex %s %d%s %s %s", 1328 m.name, m.max_speed, 1329 (GE) ? "GE" : "Gb", 1330 m.bus, 1331 (GE) ? "FCoE Adapter" : "Fibre Channel Adapter"); 1332 } 1333 1334 /** 1335 * lpfc_post_buffer: Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring. 1336 * @phba: pointer to lpfc hba data structure. 1337 * @pring: pointer to a IOCB ring. 1338 * @cnt: the number of IOCBs to be posted to the IOCB ring. 1339 * 1340 * This routine posts a given number of IOCBs with the associated DMA buffer 1341 * descriptors specified by the cnt argument to the given IOCB ring. 1342 * 1343 * Return codes 1344 * The number of IOCBs NOT able to be posted to the IOCB ring. 1345 **/ 1346 int 1347 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt) 1348 { 1349 IOCB_t *icmd; 1350 struct lpfc_iocbq *iocb; 1351 struct lpfc_dmabuf *mp1, *mp2; 1352 1353 cnt += pring->missbufcnt; 1354 1355 /* While there are buffers to post */ 1356 while (cnt > 0) { 1357 /* Allocate buffer for command iocb */ 1358 iocb = lpfc_sli_get_iocbq(phba); 1359 if (iocb == NULL) { 1360 pring->missbufcnt = cnt; 1361 return cnt; 1362 } 1363 icmd = &iocb->iocb; 1364 1365 /* 2 buffers can be posted per command */ 1366 /* Allocate buffer to post */ 1367 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL); 1368 if (mp1) 1369 mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys); 1370 if (!mp1 || !mp1->virt) { 1371 kfree(mp1); 1372 lpfc_sli_release_iocbq(phba, iocb); 1373 pring->missbufcnt = cnt; 1374 return cnt; 1375 } 1376 1377 INIT_LIST_HEAD(&mp1->list); 1378 /* Allocate buffer to post */ 1379 if (cnt > 1) { 1380 mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL); 1381 if (mp2) 1382 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI, 1383 &mp2->phys); 1384 if (!mp2 || !mp2->virt) { 1385 kfree(mp2); 1386 lpfc_mbuf_free(phba, mp1->virt, mp1->phys); 1387 kfree(mp1); 1388 lpfc_sli_release_iocbq(phba, iocb); 1389 pring->missbufcnt = cnt; 1390 return cnt; 1391 } 1392 1393 INIT_LIST_HEAD(&mp2->list); 1394 } else { 1395 mp2 = NULL; 1396 } 1397 1398 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys); 1399 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys); 1400 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE; 1401 icmd->ulpBdeCount = 1; 1402 cnt--; 1403 if (mp2) { 1404 icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys); 1405 icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys); 1406 icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE; 1407 cnt--; 1408 icmd->ulpBdeCount = 2; 1409 } 1410 1411 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN; 1412 icmd->ulpLe = 1; 1413 1414 if (lpfc_sli_issue_iocb(phba, pring, iocb, 0) == IOCB_ERROR) { 1415 lpfc_mbuf_free(phba, mp1->virt, mp1->phys); 1416 kfree(mp1); 1417 cnt++; 1418 if (mp2) { 1419 lpfc_mbuf_free(phba, mp2->virt, mp2->phys); 1420 kfree(mp2); 1421 cnt++; 1422 } 1423 lpfc_sli_release_iocbq(phba, iocb); 1424 pring->missbufcnt = cnt; 1425 return cnt; 1426 } 1427 lpfc_sli_ringpostbuf_put(phba, pring, mp1); 1428 if (mp2) 1429 lpfc_sli_ringpostbuf_put(phba, pring, mp2); 1430 } 1431 pring->missbufcnt = 0; 1432 return 0; 1433 } 1434 1435 /** 1436 * lpfc_post_rcv_buf: Post the initial receive IOCB buffers to ELS ring. 1437 * @phba: pointer to lpfc hba data structure. 1438 * 1439 * This routine posts initial receive IOCB buffers to the ELS ring. The 1440 * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is 1441 * set to 64 IOCBs. 1442 * 1443 * Return codes 1444 * 0 - success (currently always success) 1445 **/ 1446 static int 1447 lpfc_post_rcv_buf(struct lpfc_hba *phba) 1448 { 1449 struct lpfc_sli *psli = &phba->sli; 1450 1451 /* Ring 0, ELS / CT buffers */ 1452 lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0); 1453 /* Ring 2 - FCP no buffers needed */ 1454 1455 return 0; 1456 } 1457 1458 #define S(N,V) (((V)<<(N))|((V)>>(32-(N)))) 1459 1460 /** 1461 * lpfc_sha_init: Set up initial array of hash table entries. 1462 * @HashResultPointer: pointer to an array as hash table. 1463 * 1464 * This routine sets up the initial values to the array of hash table entries 1465 * for the LC HBAs. 1466 **/ 1467 static void 1468 lpfc_sha_init(uint32_t * HashResultPointer) 1469 { 1470 HashResultPointer[0] = 0x67452301; 1471 HashResultPointer[1] = 0xEFCDAB89; 1472 HashResultPointer[2] = 0x98BADCFE; 1473 HashResultPointer[3] = 0x10325476; 1474 HashResultPointer[4] = 0xC3D2E1F0; 1475 } 1476 1477 /** 1478 * lpfc_sha_iterate: Iterate initial hash table with the working hash table. 1479 * @HashResultPointer: pointer to an initial/result hash table. 1480 * @HashWorkingPointer: pointer to an working hash table. 1481 * 1482 * This routine iterates an initial hash table pointed by @HashResultPointer 1483 * with the values from the working hash table pointeed by @HashWorkingPointer. 1484 * The results are putting back to the initial hash table, returned through 1485 * the @HashResultPointer as the result hash table. 1486 **/ 1487 static void 1488 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer) 1489 { 1490 int t; 1491 uint32_t TEMP; 1492 uint32_t A, B, C, D, E; 1493 t = 16; 1494 do { 1495 HashWorkingPointer[t] = 1496 S(1, 1497 HashWorkingPointer[t - 3] ^ HashWorkingPointer[t - 1498 8] ^ 1499 HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]); 1500 } while (++t <= 79); 1501 t = 0; 1502 A = HashResultPointer[0]; 1503 B = HashResultPointer[1]; 1504 C = HashResultPointer[2]; 1505 D = HashResultPointer[3]; 1506 E = HashResultPointer[4]; 1507 1508 do { 1509 if (t < 20) { 1510 TEMP = ((B & C) | ((~B) & D)) + 0x5A827999; 1511 } else if (t < 40) { 1512 TEMP = (B ^ C ^ D) + 0x6ED9EBA1; 1513 } else if (t < 60) { 1514 TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC; 1515 } else { 1516 TEMP = (B ^ C ^ D) + 0xCA62C1D6; 1517 } 1518 TEMP += S(5, A) + E + HashWorkingPointer[t]; 1519 E = D; 1520 D = C; 1521 C = S(30, B); 1522 B = A; 1523 A = TEMP; 1524 } while (++t <= 79); 1525 1526 HashResultPointer[0] += A; 1527 HashResultPointer[1] += B; 1528 HashResultPointer[2] += C; 1529 HashResultPointer[3] += D; 1530 HashResultPointer[4] += E; 1531 1532 } 1533 1534 /** 1535 * lpfc_challenge_key: Create challenge key based on WWPN of the HBA. 1536 * @RandomChallenge: pointer to the entry of host challenge random number array. 1537 * @HashWorking: pointer to the entry of the working hash array. 1538 * 1539 * This routine calculates the working hash array referred by @HashWorking 1540 * from the challenge random numbers associated with the host, referred by 1541 * @RandomChallenge. The result is put into the entry of the working hash 1542 * array and returned by reference through @HashWorking. 1543 **/ 1544 static void 1545 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking) 1546 { 1547 *HashWorking = (*RandomChallenge ^ *HashWorking); 1548 } 1549 1550 /** 1551 * lpfc_hba_init: Perform special handling for LC HBA initialization. 1552 * @phba: pointer to lpfc hba data structure. 1553 * @hbainit: pointer to an array of unsigned 32-bit integers. 1554 * 1555 * This routine performs the special handling for LC HBA initialization. 1556 **/ 1557 void 1558 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit) 1559 { 1560 int t; 1561 uint32_t *HashWorking; 1562 uint32_t *pwwnn = (uint32_t *) phba->wwnn; 1563 1564 HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL); 1565 if (!HashWorking) 1566 return; 1567 1568 HashWorking[0] = HashWorking[78] = *pwwnn++; 1569 HashWorking[1] = HashWorking[79] = *pwwnn; 1570 1571 for (t = 0; t < 7; t++) 1572 lpfc_challenge_key(phba->RandomData + t, HashWorking + t); 1573 1574 lpfc_sha_init(hbainit); 1575 lpfc_sha_iterate(hbainit, HashWorking); 1576 kfree(HashWorking); 1577 } 1578 1579 /** 1580 * lpfc_cleanup: Performs vport cleanups before deleting a vport. 1581 * @vport: pointer to a virtual N_Port data structure. 1582 * 1583 * This routine performs the necessary cleanups before deleting the @vport. 1584 * It invokes the discovery state machine to perform necessary state 1585 * transitions and to release the ndlps associated with the @vport. Note, 1586 * the physical port is treated as @vport 0. 1587 **/ 1588 void 1589 lpfc_cleanup(struct lpfc_vport *vport) 1590 { 1591 struct lpfc_hba *phba = vport->phba; 1592 struct lpfc_nodelist *ndlp, *next_ndlp; 1593 int i = 0; 1594 1595 if (phba->link_state > LPFC_LINK_DOWN) 1596 lpfc_port_link_failure(vport); 1597 1598 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 1599 if (!NLP_CHK_NODE_ACT(ndlp)) { 1600 ndlp = lpfc_enable_node(vport, ndlp, 1601 NLP_STE_UNUSED_NODE); 1602 if (!ndlp) 1603 continue; 1604 spin_lock_irq(&phba->ndlp_lock); 1605 NLP_SET_FREE_REQ(ndlp); 1606 spin_unlock_irq(&phba->ndlp_lock); 1607 /* Trigger the release of the ndlp memory */ 1608 lpfc_nlp_put(ndlp); 1609 continue; 1610 } 1611 spin_lock_irq(&phba->ndlp_lock); 1612 if (NLP_CHK_FREE_REQ(ndlp)) { 1613 /* The ndlp should not be in memory free mode already */ 1614 spin_unlock_irq(&phba->ndlp_lock); 1615 continue; 1616 } else 1617 /* Indicate request for freeing ndlp memory */ 1618 NLP_SET_FREE_REQ(ndlp); 1619 spin_unlock_irq(&phba->ndlp_lock); 1620 1621 if (vport->port_type != LPFC_PHYSICAL_PORT && 1622 ndlp->nlp_DID == Fabric_DID) { 1623 /* Just free up ndlp with Fabric_DID for vports */ 1624 lpfc_nlp_put(ndlp); 1625 continue; 1626 } 1627 1628 if (ndlp->nlp_type & NLP_FABRIC) 1629 lpfc_disc_state_machine(vport, ndlp, NULL, 1630 NLP_EVT_DEVICE_RECOVERY); 1631 1632 lpfc_disc_state_machine(vport, ndlp, NULL, 1633 NLP_EVT_DEVICE_RM); 1634 1635 } 1636 1637 /* At this point, ALL ndlp's should be gone 1638 * because of the previous NLP_EVT_DEVICE_RM. 1639 * Lets wait for this to happen, if needed. 1640 */ 1641 while (!list_empty(&vport->fc_nodes)) { 1642 1643 if (i++ > 3000) { 1644 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 1645 "0233 Nodelist not empty\n"); 1646 list_for_each_entry_safe(ndlp, next_ndlp, 1647 &vport->fc_nodes, nlp_listp) { 1648 lpfc_printf_vlog(ndlp->vport, KERN_ERR, 1649 LOG_NODE, 1650 "0282 did:x%x ndlp:x%p " 1651 "usgmap:x%x refcnt:%d\n", 1652 ndlp->nlp_DID, (void *)ndlp, 1653 ndlp->nlp_usg_map, 1654 atomic_read( 1655 &ndlp->kref.refcount)); 1656 } 1657 break; 1658 } 1659 1660 /* Wait for any activity on ndlps to settle */ 1661 msleep(10); 1662 } 1663 return; 1664 } 1665 1666 /** 1667 * lpfc_stop_vport_timers: Stop all the timers associated with a vport. 1668 * @vport: pointer to a virtual N_Port data structure. 1669 * 1670 * This routine stops all the timers associated with a @vport. This function 1671 * is invoked before disabling or deleting a @vport. Note that the physical 1672 * port is treated as @vport 0. 1673 **/ 1674 void 1675 lpfc_stop_vport_timers(struct lpfc_vport *vport) 1676 { 1677 del_timer_sync(&vport->els_tmofunc); 1678 del_timer_sync(&vport->fc_fdmitmo); 1679 lpfc_can_disctmo(vport); 1680 return; 1681 } 1682 1683 /** 1684 * lpfc_stop_phba_timers: Stop all the timers associated with an HBA. 1685 * @phba: pointer to lpfc hba data structure. 1686 * 1687 * This routine stops all the timers associated with a HBA. This function is 1688 * invoked before either putting a HBA offline or unloading the driver. 1689 **/ 1690 static void 1691 lpfc_stop_phba_timers(struct lpfc_hba *phba) 1692 { 1693 del_timer_sync(&phba->fcp_poll_timer); 1694 lpfc_stop_vport_timers(phba->pport); 1695 del_timer_sync(&phba->sli.mbox_tmo); 1696 del_timer_sync(&phba->fabric_block_timer); 1697 phba->hb_outstanding = 0; 1698 del_timer_sync(&phba->hb_tmofunc); 1699 del_timer_sync(&phba->eratt_poll); 1700 return; 1701 } 1702 1703 /** 1704 * lpfc_block_mgmt_io: Mark a HBA's management interface as blocked. 1705 * @phba: pointer to lpfc hba data structure. 1706 * 1707 * This routine marks a HBA's management interface as blocked. Once the HBA's 1708 * management interface is marked as blocked, all the user space access to 1709 * the HBA, whether they are from sysfs interface or libdfc interface will 1710 * all be blocked. The HBA is set to block the management interface when the 1711 * driver prepares the HBA interface for online or offline. 1712 **/ 1713 static void 1714 lpfc_block_mgmt_io(struct lpfc_hba * phba) 1715 { 1716 unsigned long iflag; 1717 1718 spin_lock_irqsave(&phba->hbalock, iflag); 1719 phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO; 1720 spin_unlock_irqrestore(&phba->hbalock, iflag); 1721 } 1722 1723 /** 1724 * lpfc_online: Initialize and bring a HBA online. 1725 * @phba: pointer to lpfc hba data structure. 1726 * 1727 * This routine initializes the HBA and brings a HBA online. During this 1728 * process, the management interface is blocked to prevent user space access 1729 * to the HBA interfering with the driver initialization. 1730 * 1731 * Return codes 1732 * 0 - successful 1733 * 1 - failed 1734 **/ 1735 int 1736 lpfc_online(struct lpfc_hba *phba) 1737 { 1738 struct lpfc_vport *vport = phba->pport; 1739 struct lpfc_vport **vports; 1740 int i; 1741 1742 if (!phba) 1743 return 0; 1744 1745 if (!(vport->fc_flag & FC_OFFLINE_MODE)) 1746 return 0; 1747 1748 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 1749 "0458 Bring Adapter online\n"); 1750 1751 lpfc_block_mgmt_io(phba); 1752 1753 if (!lpfc_sli_queue_setup(phba)) { 1754 lpfc_unblock_mgmt_io(phba); 1755 return 1; 1756 } 1757 1758 if (lpfc_sli_hba_setup(phba)) { /* Initialize the HBA */ 1759 lpfc_unblock_mgmt_io(phba); 1760 return 1; 1761 } 1762 1763 vports = lpfc_create_vport_work_array(phba); 1764 if (vports != NULL) 1765 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { 1766 struct Scsi_Host *shost; 1767 shost = lpfc_shost_from_vport(vports[i]); 1768 spin_lock_irq(shost->host_lock); 1769 vports[i]->fc_flag &= ~FC_OFFLINE_MODE; 1770 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 1771 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 1772 spin_unlock_irq(shost->host_lock); 1773 } 1774 lpfc_destroy_vport_work_array(phba, vports); 1775 1776 lpfc_unblock_mgmt_io(phba); 1777 return 0; 1778 } 1779 1780 /** 1781 * lpfc_unblock_mgmt_io: Mark a HBA's management interface to be not blocked. 1782 * @phba: pointer to lpfc hba data structure. 1783 * 1784 * This routine marks a HBA's management interface as not blocked. Once the 1785 * HBA's management interface is marked as not blocked, all the user space 1786 * access to the HBA, whether they are from sysfs interface or libdfc 1787 * interface will be allowed. The HBA is set to block the management interface 1788 * when the driver prepares the HBA interface for online or offline and then 1789 * set to unblock the management interface afterwards. 1790 **/ 1791 void 1792 lpfc_unblock_mgmt_io(struct lpfc_hba * phba) 1793 { 1794 unsigned long iflag; 1795 1796 spin_lock_irqsave(&phba->hbalock, iflag); 1797 phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO; 1798 spin_unlock_irqrestore(&phba->hbalock, iflag); 1799 } 1800 1801 /** 1802 * lpfc_offline_prep: Prepare a HBA to be brought offline. 1803 * @phba: pointer to lpfc hba data structure. 1804 * 1805 * This routine is invoked to prepare a HBA to be brought offline. It performs 1806 * unregistration login to all the nodes on all vports and flushes the mailbox 1807 * queue to make it ready to be brought offline. 1808 **/ 1809 void 1810 lpfc_offline_prep(struct lpfc_hba * phba) 1811 { 1812 struct lpfc_vport *vport = phba->pport; 1813 struct lpfc_nodelist *ndlp, *next_ndlp; 1814 struct lpfc_vport **vports; 1815 int i; 1816 1817 if (vport->fc_flag & FC_OFFLINE_MODE) 1818 return; 1819 1820 lpfc_block_mgmt_io(phba); 1821 1822 lpfc_linkdown(phba); 1823 1824 /* Issue an unreg_login to all nodes on all vports */ 1825 vports = lpfc_create_vport_work_array(phba); 1826 if (vports != NULL) { 1827 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { 1828 struct Scsi_Host *shost; 1829 1830 if (vports[i]->load_flag & FC_UNLOADING) 1831 continue; 1832 shost = lpfc_shost_from_vport(vports[i]); 1833 list_for_each_entry_safe(ndlp, next_ndlp, 1834 &vports[i]->fc_nodes, 1835 nlp_listp) { 1836 if (!NLP_CHK_NODE_ACT(ndlp)) 1837 continue; 1838 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 1839 continue; 1840 if (ndlp->nlp_type & NLP_FABRIC) { 1841 lpfc_disc_state_machine(vports[i], ndlp, 1842 NULL, NLP_EVT_DEVICE_RECOVERY); 1843 lpfc_disc_state_machine(vports[i], ndlp, 1844 NULL, NLP_EVT_DEVICE_RM); 1845 } 1846 spin_lock_irq(shost->host_lock); 1847 ndlp->nlp_flag &= ~NLP_NPR_ADISC; 1848 spin_unlock_irq(shost->host_lock); 1849 lpfc_unreg_rpi(vports[i], ndlp); 1850 } 1851 } 1852 } 1853 lpfc_destroy_vport_work_array(phba, vports); 1854 1855 lpfc_sli_flush_mbox_queue(phba); 1856 } 1857 1858 /** 1859 * lpfc_offline: Bring a HBA offline. 1860 * @phba: pointer to lpfc hba data structure. 1861 * 1862 * This routine actually brings a HBA offline. It stops all the timers 1863 * associated with the HBA, brings down the SLI layer, and eventually 1864 * marks the HBA as in offline state for the upper layer protocol. 1865 **/ 1866 void 1867 lpfc_offline(struct lpfc_hba *phba) 1868 { 1869 struct Scsi_Host *shost; 1870 struct lpfc_vport **vports; 1871 int i; 1872 1873 if (phba->pport->fc_flag & FC_OFFLINE_MODE) 1874 return; 1875 1876 /* stop all timers associated with this hba */ 1877 lpfc_stop_phba_timers(phba); 1878 vports = lpfc_create_vport_work_array(phba); 1879 if (vports != NULL) 1880 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) 1881 lpfc_stop_vport_timers(vports[i]); 1882 lpfc_destroy_vport_work_array(phba, vports); 1883 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 1884 "0460 Bring Adapter offline\n"); 1885 /* Bring down the SLI Layer and cleanup. The HBA is offline 1886 now. */ 1887 lpfc_sli_hba_down(phba); 1888 spin_lock_irq(&phba->hbalock); 1889 phba->work_ha = 0; 1890 spin_unlock_irq(&phba->hbalock); 1891 vports = lpfc_create_vport_work_array(phba); 1892 if (vports != NULL) 1893 for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { 1894 shost = lpfc_shost_from_vport(vports[i]); 1895 spin_lock_irq(shost->host_lock); 1896 vports[i]->work_port_events = 0; 1897 vports[i]->fc_flag |= FC_OFFLINE_MODE; 1898 spin_unlock_irq(shost->host_lock); 1899 } 1900 lpfc_destroy_vport_work_array(phba, vports); 1901 } 1902 1903 /** 1904 * lpfc_scsi_free: Free all the SCSI buffers and IOCBs from driver lists. 1905 * @phba: pointer to lpfc hba data structure. 1906 * 1907 * This routine is to free all the SCSI buffers and IOCBs from the driver 1908 * list back to kernel. It is called from lpfc_pci_remove_one to free 1909 * the internal resources before the device is removed from the system. 1910 * 1911 * Return codes 1912 * 0 - successful (for now, it always returns 0) 1913 **/ 1914 static int 1915 lpfc_scsi_free(struct lpfc_hba *phba) 1916 { 1917 struct lpfc_scsi_buf *sb, *sb_next; 1918 struct lpfc_iocbq *io, *io_next; 1919 1920 spin_lock_irq(&phba->hbalock); 1921 /* Release all the lpfc_scsi_bufs maintained by this host. */ 1922 list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) { 1923 list_del(&sb->list); 1924 pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data, 1925 sb->dma_handle); 1926 kfree(sb); 1927 phba->total_scsi_bufs--; 1928 } 1929 1930 /* Release all the lpfc_iocbq entries maintained by this host. */ 1931 list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) { 1932 list_del(&io->list); 1933 kfree(io); 1934 phba->total_iocbq_bufs--; 1935 } 1936 1937 spin_unlock_irq(&phba->hbalock); 1938 1939 return 0; 1940 } 1941 1942 /** 1943 * lpfc_create_port: Create an FC port. 1944 * @phba: pointer to lpfc hba data structure. 1945 * @instance: a unique integer ID to this FC port. 1946 * @dev: pointer to the device data structure. 1947 * 1948 * This routine creates a FC port for the upper layer protocol. The FC port 1949 * can be created on top of either a physical port or a virtual port provided 1950 * by the HBA. This routine also allocates a SCSI host data structure (shost) 1951 * and associates the FC port created before adding the shost into the SCSI 1952 * layer. 1953 * 1954 * Return codes 1955 * @vport - pointer to the virtual N_Port data structure. 1956 * NULL - port create failed. 1957 **/ 1958 struct lpfc_vport * 1959 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev) 1960 { 1961 struct lpfc_vport *vport; 1962 struct Scsi_Host *shost; 1963 int error = 0; 1964 1965 if (dev != &phba->pcidev->dev) 1966 shost = scsi_host_alloc(&lpfc_vport_template, 1967 sizeof(struct lpfc_vport)); 1968 else 1969 shost = scsi_host_alloc(&lpfc_template, 1970 sizeof(struct lpfc_vport)); 1971 if (!shost) 1972 goto out; 1973 1974 vport = (struct lpfc_vport *) shost->hostdata; 1975 vport->phba = phba; 1976 vport->load_flag |= FC_LOADING; 1977 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 1978 vport->fc_rscn_flush = 0; 1979 1980 lpfc_get_vport_cfgparam(vport); 1981 shost->unique_id = instance; 1982 shost->max_id = LPFC_MAX_TARGET; 1983 shost->max_lun = vport->cfg_max_luns; 1984 shost->this_id = -1; 1985 shost->max_cmd_len = 16; 1986 /* 1987 * Set initial can_queue value since 0 is no longer supported and 1988 * scsi_add_host will fail. This will be adjusted later based on the 1989 * max xri value determined in hba setup. 1990 */ 1991 shost->can_queue = phba->cfg_hba_queue_depth - 10; 1992 if (dev != &phba->pcidev->dev) { 1993 shost->transportt = lpfc_vport_transport_template; 1994 vport->port_type = LPFC_NPIV_PORT; 1995 } else { 1996 shost->transportt = lpfc_transport_template; 1997 vport->port_type = LPFC_PHYSICAL_PORT; 1998 } 1999 2000 /* Initialize all internally managed lists. */ 2001 INIT_LIST_HEAD(&vport->fc_nodes); 2002 spin_lock_init(&vport->work_port_lock); 2003 2004 init_timer(&vport->fc_disctmo); 2005 vport->fc_disctmo.function = lpfc_disc_timeout; 2006 vport->fc_disctmo.data = (unsigned long)vport; 2007 2008 init_timer(&vport->fc_fdmitmo); 2009 vport->fc_fdmitmo.function = lpfc_fdmi_tmo; 2010 vport->fc_fdmitmo.data = (unsigned long)vport; 2011 2012 init_timer(&vport->els_tmofunc); 2013 vport->els_tmofunc.function = lpfc_els_timeout; 2014 vport->els_tmofunc.data = (unsigned long)vport; 2015 2016 error = scsi_add_host(shost, dev); 2017 if (error) 2018 goto out_put_shost; 2019 2020 spin_lock_irq(&phba->hbalock); 2021 list_add_tail(&vport->listentry, &phba->port_list); 2022 spin_unlock_irq(&phba->hbalock); 2023 return vport; 2024 2025 out_put_shost: 2026 scsi_host_put(shost); 2027 out: 2028 return NULL; 2029 } 2030 2031 /** 2032 * destroy_port: Destroy an FC port. 2033 * @vport: pointer to an lpfc virtual N_Port data structure. 2034 * 2035 * This routine destroys a FC port from the upper layer protocol. All the 2036 * resources associated with the port are released. 2037 **/ 2038 void 2039 destroy_port(struct lpfc_vport *vport) 2040 { 2041 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2042 struct lpfc_hba *phba = vport->phba; 2043 2044 lpfc_debugfs_terminate(vport); 2045 fc_remove_host(shost); 2046 scsi_remove_host(shost); 2047 2048 spin_lock_irq(&phba->hbalock); 2049 list_del_init(&vport->listentry); 2050 spin_unlock_irq(&phba->hbalock); 2051 2052 lpfc_cleanup(vport); 2053 return; 2054 } 2055 2056 /** 2057 * lpfc_get_instance: Get a unique integer ID. 2058 * 2059 * This routine allocates a unique integer ID from lpfc_hba_index pool. It 2060 * uses the kernel idr facility to perform the task. 2061 * 2062 * Return codes: 2063 * instance - a unique integer ID allocated as the new instance. 2064 * -1 - lpfc get instance failed. 2065 **/ 2066 int 2067 lpfc_get_instance(void) 2068 { 2069 int instance = 0; 2070 2071 /* Assign an unused number */ 2072 if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL)) 2073 return -1; 2074 if (idr_get_new(&lpfc_hba_index, NULL, &instance)) 2075 return -1; 2076 return instance; 2077 } 2078 2079 /** 2080 * lpfc_scan_finished: method for SCSI layer to detect whether scan is done. 2081 * @shost: pointer to SCSI host data structure. 2082 * @time: elapsed time of the scan in jiffies. 2083 * 2084 * This routine is called by the SCSI layer with a SCSI host to determine 2085 * whether the scan host is finished. 2086 * 2087 * Note: there is no scan_start function as adapter initialization will have 2088 * asynchronously kicked off the link initialization. 2089 * 2090 * Return codes 2091 * 0 - SCSI host scan is not over yet. 2092 * 1 - SCSI host scan is over. 2093 **/ 2094 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time) 2095 { 2096 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2097 struct lpfc_hba *phba = vport->phba; 2098 int stat = 0; 2099 2100 spin_lock_irq(shost->host_lock); 2101 2102 if (vport->load_flag & FC_UNLOADING) { 2103 stat = 1; 2104 goto finished; 2105 } 2106 if (time >= 30 * HZ) { 2107 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2108 "0461 Scanning longer than 30 " 2109 "seconds. Continuing initialization\n"); 2110 stat = 1; 2111 goto finished; 2112 } 2113 if (time >= 15 * HZ && phba->link_state <= LPFC_LINK_DOWN) { 2114 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2115 "0465 Link down longer than 15 " 2116 "seconds. Continuing initialization\n"); 2117 stat = 1; 2118 goto finished; 2119 } 2120 2121 if (vport->port_state != LPFC_VPORT_READY) 2122 goto finished; 2123 if (vport->num_disc_nodes || vport->fc_prli_sent) 2124 goto finished; 2125 if (vport->fc_map_cnt == 0 && time < 2 * HZ) 2126 goto finished; 2127 if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0) 2128 goto finished; 2129 2130 stat = 1; 2131 2132 finished: 2133 spin_unlock_irq(shost->host_lock); 2134 return stat; 2135 } 2136 2137 /** 2138 * lpfc_host_attrib_init: Initialize SCSI host attributes on a FC port. 2139 * @shost: pointer to SCSI host data structure. 2140 * 2141 * This routine initializes a given SCSI host attributes on a FC port. The 2142 * SCSI host can be either on top of a physical port or a virtual port. 2143 **/ 2144 void lpfc_host_attrib_init(struct Scsi_Host *shost) 2145 { 2146 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2147 struct lpfc_hba *phba = vport->phba; 2148 /* 2149 * Set fixed host attributes. Must done after lpfc_sli_hba_setup(). 2150 */ 2151 2152 fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn); 2153 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn); 2154 fc_host_supported_classes(shost) = FC_COS_CLASS3; 2155 2156 memset(fc_host_supported_fc4s(shost), 0, 2157 sizeof(fc_host_supported_fc4s(shost))); 2158 fc_host_supported_fc4s(shost)[2] = 1; 2159 fc_host_supported_fc4s(shost)[7] = 1; 2160 2161 lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost), 2162 sizeof fc_host_symbolic_name(shost)); 2163 2164 fc_host_supported_speeds(shost) = 0; 2165 if (phba->lmt & LMT_10Gb) 2166 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT; 2167 if (phba->lmt & LMT_8Gb) 2168 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT; 2169 if (phba->lmt & LMT_4Gb) 2170 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT; 2171 if (phba->lmt & LMT_2Gb) 2172 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT; 2173 if (phba->lmt & LMT_1Gb) 2174 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT; 2175 2176 fc_host_maxframe_size(shost) = 2177 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) | 2178 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb; 2179 2180 /* This value is also unchanging */ 2181 memset(fc_host_active_fc4s(shost), 0, 2182 sizeof(fc_host_active_fc4s(shost))); 2183 fc_host_active_fc4s(shost)[2] = 1; 2184 fc_host_active_fc4s(shost)[7] = 1; 2185 2186 fc_host_max_npiv_vports(shost) = phba->max_vpi; 2187 spin_lock_irq(shost->host_lock); 2188 vport->load_flag &= ~FC_LOADING; 2189 spin_unlock_irq(shost->host_lock); 2190 } 2191 2192 /** 2193 * lpfc_enable_msix: Enable MSI-X interrupt mode. 2194 * @phba: pointer to lpfc hba data structure. 2195 * 2196 * This routine is invoked to enable the MSI-X interrupt vectors. The kernel 2197 * function pci_enable_msix() is called to enable the MSI-X vectors. Note that 2198 * pci_enable_msix(), once invoked, enables either all or nothing, depending 2199 * on the current availability of PCI vector resources. The device driver is 2200 * responsible for calling the individual request_irq() to register each MSI-X 2201 * vector with a interrupt handler, which is done in this function. Note that 2202 * later when device is unloading, the driver should always call free_irq() 2203 * on all MSI-X vectors it has done request_irq() on before calling 2204 * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device 2205 * will be left with MSI-X enabled and leaks its vectors. 2206 * 2207 * Return codes 2208 * 0 - sucessful 2209 * other values - error 2210 **/ 2211 static int 2212 lpfc_enable_msix(struct lpfc_hba *phba) 2213 { 2214 int rc, i; 2215 LPFC_MBOXQ_t *pmb; 2216 2217 /* Set up MSI-X multi-message vectors */ 2218 for (i = 0; i < LPFC_MSIX_VECTORS; i++) 2219 phba->msix_entries[i].entry = i; 2220 2221 /* Configure MSI-X capability structure */ 2222 rc = pci_enable_msix(phba->pcidev, phba->msix_entries, 2223 ARRAY_SIZE(phba->msix_entries)); 2224 if (rc) { 2225 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2226 "0420 Enable MSI-X failed (%d), continuing " 2227 "with MSI\n", rc); 2228 goto msi_fail_out; 2229 } else 2230 for (i = 0; i < LPFC_MSIX_VECTORS; i++) 2231 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2232 "0477 MSI-X entry[%d]: vector=x%x " 2233 "message=%d\n", i, 2234 phba->msix_entries[i].vector, 2235 phba->msix_entries[i].entry); 2236 /* 2237 * Assign MSI-X vectors to interrupt handlers 2238 */ 2239 2240 /* vector-0 is associated to slow-path handler */ 2241 rc = request_irq(phba->msix_entries[0].vector, &lpfc_sp_intr_handler, 2242 IRQF_SHARED, LPFC_SP_DRIVER_HANDLER_NAME, phba); 2243 if (rc) { 2244 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2245 "0421 MSI-X slow-path request_irq failed " 2246 "(%d), continuing with MSI\n", rc); 2247 goto msi_fail_out; 2248 } 2249 2250 /* vector-1 is associated to fast-path handler */ 2251 rc = request_irq(phba->msix_entries[1].vector, &lpfc_fp_intr_handler, 2252 IRQF_SHARED, LPFC_FP_DRIVER_HANDLER_NAME, phba); 2253 2254 if (rc) { 2255 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2256 "0429 MSI-X fast-path request_irq failed " 2257 "(%d), continuing with MSI\n", rc); 2258 goto irq_fail_out; 2259 } 2260 2261 /* 2262 * Configure HBA MSI-X attention conditions to messages 2263 */ 2264 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2265 2266 if (!pmb) { 2267 rc = -ENOMEM; 2268 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2269 "0474 Unable to allocate memory for issuing " 2270 "MBOX_CONFIG_MSI command\n"); 2271 goto mem_fail_out; 2272 } 2273 rc = lpfc_config_msi(phba, pmb); 2274 if (rc) 2275 goto mbx_fail_out; 2276 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL); 2277 if (rc != MBX_SUCCESS) { 2278 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX, 2279 "0351 Config MSI mailbox command failed, " 2280 "mbxCmd x%x, mbxStatus x%x\n", 2281 pmb->mb.mbxCommand, pmb->mb.mbxStatus); 2282 goto mbx_fail_out; 2283 } 2284 2285 /* Free memory allocated for mailbox command */ 2286 mempool_free(pmb, phba->mbox_mem_pool); 2287 return rc; 2288 2289 mbx_fail_out: 2290 /* Free memory allocated for mailbox command */ 2291 mempool_free(pmb, phba->mbox_mem_pool); 2292 2293 mem_fail_out: 2294 /* free the irq already requested */ 2295 free_irq(phba->msix_entries[1].vector, phba); 2296 2297 irq_fail_out: 2298 /* free the irq already requested */ 2299 free_irq(phba->msix_entries[0].vector, phba); 2300 2301 msi_fail_out: 2302 /* Unconfigure MSI-X capability structure */ 2303 pci_disable_msix(phba->pcidev); 2304 return rc; 2305 } 2306 2307 /** 2308 * lpfc_disable_msix: Disable MSI-X interrupt mode. 2309 * @phba: pointer to lpfc hba data structure. 2310 * 2311 * This routine is invoked to release the MSI-X vectors and then disable the 2312 * MSI-X interrupt mode. 2313 **/ 2314 static void 2315 lpfc_disable_msix(struct lpfc_hba *phba) 2316 { 2317 int i; 2318 2319 /* Free up MSI-X multi-message vectors */ 2320 for (i = 0; i < LPFC_MSIX_VECTORS; i++) 2321 free_irq(phba->msix_entries[i].vector, phba); 2322 /* Disable MSI-X */ 2323 pci_disable_msix(phba->pcidev); 2324 } 2325 2326 /** 2327 * lpfc_pci_probe_one: lpfc PCI probe func to register device to PCI subsystem. 2328 * @pdev: pointer to PCI device 2329 * @pid: pointer to PCI device identifier 2330 * 2331 * This routine is to be registered to the kernel's PCI subsystem. When an 2332 * Emulex HBA is presented in PCI bus, the kernel PCI subsystem looks at 2333 * PCI device-specific information of the device and driver to see if the 2334 * driver state that it can support this kind of device. If the match is 2335 * successful, the driver core invokes this routine. If this routine 2336 * determines it can claim the HBA, it does all the initialization that it 2337 * needs to do to handle the HBA properly. 2338 * 2339 * Return code 2340 * 0 - driver can claim the device 2341 * negative value - driver can not claim the device 2342 **/ 2343 static int __devinit 2344 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid) 2345 { 2346 struct lpfc_vport *vport = NULL; 2347 struct lpfc_hba *phba; 2348 struct lpfc_sli *psli; 2349 struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL; 2350 struct Scsi_Host *shost = NULL; 2351 void *ptr; 2352 unsigned long bar0map_len, bar2map_len; 2353 int error = -ENODEV, retval; 2354 int i, hbq_count; 2355 uint16_t iotag; 2356 int bars = pci_select_bars(pdev, IORESOURCE_MEM); 2357 struct lpfc_adapter_event_header adapter_event; 2358 2359 if (pci_enable_device_mem(pdev)) 2360 goto out; 2361 if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME)) 2362 goto out_disable_device; 2363 2364 phba = kzalloc(sizeof (struct lpfc_hba), GFP_KERNEL); 2365 if (!phba) 2366 goto out_release_regions; 2367 2368 atomic_set(&phba->fast_event_count, 0); 2369 spin_lock_init(&phba->hbalock); 2370 2371 /* Initialize ndlp management spinlock */ 2372 spin_lock_init(&phba->ndlp_lock); 2373 2374 phba->pcidev = pdev; 2375 2376 /* Assign an unused board number */ 2377 if ((phba->brd_no = lpfc_get_instance()) < 0) 2378 goto out_free_phba; 2379 2380 INIT_LIST_HEAD(&phba->port_list); 2381 init_waitqueue_head(&phba->wait_4_mlo_m_q); 2382 /* 2383 * Get all the module params for configuring this host and then 2384 * establish the host. 2385 */ 2386 lpfc_get_cfgparam(phba); 2387 phba->max_vpi = LPFC_MAX_VPI; 2388 2389 /* Initialize timers used by driver */ 2390 init_timer(&phba->hb_tmofunc); 2391 phba->hb_tmofunc.function = lpfc_hb_timeout; 2392 phba->hb_tmofunc.data = (unsigned long)phba; 2393 2394 psli = &phba->sli; 2395 init_timer(&psli->mbox_tmo); 2396 psli->mbox_tmo.function = lpfc_mbox_timeout; 2397 psli->mbox_tmo.data = (unsigned long) phba; 2398 init_timer(&phba->fcp_poll_timer); 2399 phba->fcp_poll_timer.function = lpfc_poll_timeout; 2400 phba->fcp_poll_timer.data = (unsigned long) phba; 2401 init_timer(&phba->fabric_block_timer); 2402 phba->fabric_block_timer.function = lpfc_fabric_block_timeout; 2403 phba->fabric_block_timer.data = (unsigned long) phba; 2404 init_timer(&phba->eratt_poll); 2405 phba->eratt_poll.function = lpfc_poll_eratt; 2406 phba->eratt_poll.data = (unsigned long) phba; 2407 2408 pci_set_master(pdev); 2409 pci_try_set_mwi(pdev); 2410 2411 if (pci_set_dma_mask(phba->pcidev, DMA_64BIT_MASK) != 0) 2412 if (pci_set_dma_mask(phba->pcidev, DMA_32BIT_MASK) != 0) 2413 goto out_idr_remove; 2414 2415 /* 2416 * Get the bus address of Bar0 and Bar2 and the number of bytes 2417 * required by each mapping. 2418 */ 2419 phba->pci_bar0_map = pci_resource_start(phba->pcidev, 0); 2420 bar0map_len = pci_resource_len(phba->pcidev, 0); 2421 2422 phba->pci_bar2_map = pci_resource_start(phba->pcidev, 2); 2423 bar2map_len = pci_resource_len(phba->pcidev, 2); 2424 2425 /* Map HBA SLIM to a kernel virtual address. */ 2426 phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len); 2427 if (!phba->slim_memmap_p) { 2428 error = -ENODEV; 2429 dev_printk(KERN_ERR, &pdev->dev, 2430 "ioremap failed for SLIM memory.\n"); 2431 goto out_idr_remove; 2432 } 2433 2434 /* Map HBA Control Registers to a kernel virtual address. */ 2435 phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len); 2436 if (!phba->ctrl_regs_memmap_p) { 2437 error = -ENODEV; 2438 dev_printk(KERN_ERR, &pdev->dev, 2439 "ioremap failed for HBA control registers.\n"); 2440 goto out_iounmap_slim; 2441 } 2442 2443 /* Allocate memory for SLI-2 structures */ 2444 phba->slim2p.virt = dma_alloc_coherent(&phba->pcidev->dev, 2445 SLI2_SLIM_SIZE, 2446 &phba->slim2p.phys, 2447 GFP_KERNEL); 2448 if (!phba->slim2p.virt) 2449 goto out_iounmap; 2450 2451 memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE); 2452 phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx); 2453 phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb)); 2454 phba->IOCBs = (phba->slim2p.virt + 2455 offsetof(struct lpfc_sli2_slim, IOCBs)); 2456 2457 phba->hbqslimp.virt = dma_alloc_coherent(&phba->pcidev->dev, 2458 lpfc_sli_hbq_size(), 2459 &phba->hbqslimp.phys, 2460 GFP_KERNEL); 2461 if (!phba->hbqslimp.virt) 2462 goto out_free_slim; 2463 2464 hbq_count = lpfc_sli_hbq_count(); 2465 ptr = phba->hbqslimp.virt; 2466 for (i = 0; i < hbq_count; ++i) { 2467 phba->hbqs[i].hbq_virt = ptr; 2468 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list); 2469 ptr += (lpfc_hbq_defs[i]->entry_count * 2470 sizeof(struct lpfc_hbq_entry)); 2471 } 2472 phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc; 2473 phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free; 2474 2475 memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size()); 2476 2477 INIT_LIST_HEAD(&phba->hbqbuf_in_list); 2478 2479 /* Initialize the SLI Layer to run with lpfc HBAs. */ 2480 lpfc_sli_setup(phba); 2481 lpfc_sli_queue_setup(phba); 2482 2483 retval = lpfc_mem_alloc(phba); 2484 if (retval) { 2485 error = retval; 2486 goto out_free_hbqslimp; 2487 } 2488 2489 /* Initialize and populate the iocb list per host. */ 2490 INIT_LIST_HEAD(&phba->lpfc_iocb_list); 2491 for (i = 0; i < LPFC_IOCB_LIST_CNT; i++) { 2492 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL); 2493 if (iocbq_entry == NULL) { 2494 printk(KERN_ERR "%s: only allocated %d iocbs of " 2495 "expected %d count. Unloading driver.\n", 2496 __func__, i, LPFC_IOCB_LIST_CNT); 2497 error = -ENOMEM; 2498 goto out_free_iocbq; 2499 } 2500 2501 iotag = lpfc_sli_next_iotag(phba, iocbq_entry); 2502 if (iotag == 0) { 2503 kfree (iocbq_entry); 2504 printk(KERN_ERR "%s: failed to allocate IOTAG. " 2505 "Unloading driver.\n", 2506 __func__); 2507 error = -ENOMEM; 2508 goto out_free_iocbq; 2509 } 2510 2511 spin_lock_irq(&phba->hbalock); 2512 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list); 2513 phba->total_iocbq_bufs++; 2514 spin_unlock_irq(&phba->hbalock); 2515 } 2516 2517 /* Initialize HBA structure */ 2518 phba->fc_edtov = FF_DEF_EDTOV; 2519 phba->fc_ratov = FF_DEF_RATOV; 2520 phba->fc_altov = FF_DEF_ALTOV; 2521 phba->fc_arbtov = FF_DEF_ARBTOV; 2522 2523 INIT_LIST_HEAD(&phba->work_list); 2524 phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT); 2525 phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4)); 2526 2527 /* Initialize the wait queue head for the kernel thread */ 2528 init_waitqueue_head(&phba->work_waitq); 2529 2530 /* Startup the kernel thread for this host adapter. */ 2531 phba->worker_thread = kthread_run(lpfc_do_work, phba, 2532 "lpfc_worker_%d", phba->brd_no); 2533 if (IS_ERR(phba->worker_thread)) { 2534 error = PTR_ERR(phba->worker_thread); 2535 goto out_free_iocbq; 2536 } 2537 2538 /* Initialize the list of scsi buffers used by driver for scsi IO. */ 2539 spin_lock_init(&phba->scsi_buf_list_lock); 2540 INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list); 2541 2542 /* Initialize list of fabric iocbs */ 2543 INIT_LIST_HEAD(&phba->fabric_iocb_list); 2544 2545 /* Initialize list to save ELS buffers */ 2546 INIT_LIST_HEAD(&phba->elsbuf); 2547 2548 vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev); 2549 if (!vport) 2550 goto out_kthread_stop; 2551 2552 shost = lpfc_shost_from_vport(vport); 2553 phba->pport = vport; 2554 lpfc_debugfs_initialize(vport); 2555 2556 pci_set_drvdata(pdev, shost); 2557 phba->intr_type = NONE; 2558 2559 phba->MBslimaddr = phba->slim_memmap_p; 2560 phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET; 2561 phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET; 2562 phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET; 2563 phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET; 2564 2565 /* Configure and enable interrupt */ 2566 if (phba->cfg_use_msi == 2) { 2567 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */ 2568 error = lpfc_sli_config_port(phba, 3); 2569 if (error) 2570 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2571 "0427 Firmware not capable of SLI 3 mode.\n"); 2572 else { 2573 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2574 "0426 Firmware capable of SLI 3 mode.\n"); 2575 /* Now, try to enable MSI-X interrupt mode */ 2576 error = lpfc_enable_msix(phba); 2577 if (!error) { 2578 phba->intr_type = MSIX; 2579 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2580 "0430 enable MSI-X mode.\n"); 2581 } 2582 } 2583 } 2584 2585 /* Fallback to MSI if MSI-X initialization failed */ 2586 if (phba->cfg_use_msi >= 1 && phba->intr_type == NONE) { 2587 retval = pci_enable_msi(phba->pcidev); 2588 if (!retval) { 2589 phba->intr_type = MSI; 2590 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2591 "0473 enable MSI mode.\n"); 2592 } else 2593 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2594 "0452 enable IRQ mode.\n"); 2595 } 2596 2597 /* MSI-X is the only case the doesn't need to call request_irq */ 2598 if (phba->intr_type != MSIX) { 2599 retval = request_irq(phba->pcidev->irq, lpfc_intr_handler, 2600 IRQF_SHARED, LPFC_DRIVER_NAME, phba); 2601 if (retval) { 2602 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0451 Enable " 2603 "interrupt handler failed\n"); 2604 error = retval; 2605 goto out_disable_msi; 2606 } else if (phba->intr_type != MSI) 2607 phba->intr_type = INTx; 2608 } 2609 2610 if (lpfc_alloc_sysfs_attr(vport)) { 2611 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2612 "1476 Failed to allocate sysfs attr\n"); 2613 error = -ENOMEM; 2614 goto out_free_irq; 2615 } 2616 2617 if (lpfc_sli_hba_setup(phba)) { 2618 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2619 "1477 Failed to set up hba\n"); 2620 error = -ENODEV; 2621 goto out_remove_device; 2622 } 2623 2624 /* 2625 * hba setup may have changed the hba_queue_depth so we need to adjust 2626 * the value of can_queue. 2627 */ 2628 shost->can_queue = phba->cfg_hba_queue_depth - 10; 2629 2630 lpfc_host_attrib_init(shost); 2631 2632 if (phba->cfg_poll & DISABLE_FCP_RING_INT) { 2633 spin_lock_irq(shost->host_lock); 2634 lpfc_poll_start_timer(phba); 2635 spin_unlock_irq(shost->host_lock); 2636 } 2637 2638 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2639 "0428 Perform SCSI scan\n"); 2640 /* Send board arrival event to upper layer */ 2641 adapter_event.event_type = FC_REG_ADAPTER_EVENT; 2642 adapter_event.subcategory = LPFC_EVENT_ARRIVAL; 2643 fc_host_post_vendor_event(shost, fc_get_event_number(), 2644 sizeof(adapter_event), 2645 (char *) &adapter_event, 2646 LPFC_NL_VENDOR_ID); 2647 2648 scsi_scan_host(shost); 2649 2650 return 0; 2651 2652 out_remove_device: 2653 lpfc_free_sysfs_attr(vport); 2654 spin_lock_irq(shost->host_lock); 2655 vport->load_flag |= FC_UNLOADING; 2656 spin_unlock_irq(shost->host_lock); 2657 out_free_irq: 2658 lpfc_stop_phba_timers(phba); 2659 phba->pport->work_port_events = 0; 2660 2661 if (phba->intr_type == MSIX) 2662 lpfc_disable_msix(phba); 2663 else 2664 free_irq(phba->pcidev->irq, phba); 2665 2666 out_disable_msi: 2667 if (phba->intr_type == MSI) 2668 pci_disable_msi(phba->pcidev); 2669 destroy_port(vport); 2670 out_kthread_stop: 2671 kthread_stop(phba->worker_thread); 2672 out_free_iocbq: 2673 list_for_each_entry_safe(iocbq_entry, iocbq_next, 2674 &phba->lpfc_iocb_list, list) { 2675 kfree(iocbq_entry); 2676 phba->total_iocbq_bufs--; 2677 } 2678 lpfc_mem_free(phba); 2679 out_free_hbqslimp: 2680 dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(), 2681 phba->hbqslimp.virt, phba->hbqslimp.phys); 2682 out_free_slim: 2683 dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE, 2684 phba->slim2p.virt, phba->slim2p.phys); 2685 out_iounmap: 2686 iounmap(phba->ctrl_regs_memmap_p); 2687 out_iounmap_slim: 2688 iounmap(phba->slim_memmap_p); 2689 out_idr_remove: 2690 idr_remove(&lpfc_hba_index, phba->brd_no); 2691 out_free_phba: 2692 kfree(phba); 2693 out_release_regions: 2694 pci_release_selected_regions(pdev, bars); 2695 out_disable_device: 2696 pci_disable_device(pdev); 2697 out: 2698 pci_set_drvdata(pdev, NULL); 2699 if (shost) 2700 scsi_host_put(shost); 2701 return error; 2702 } 2703 2704 /** 2705 * lpfc_pci_remove_one: lpfc PCI func to unregister device from PCI subsystem. 2706 * @pdev: pointer to PCI device 2707 * 2708 * This routine is to be registered to the kernel's PCI subsystem. When an 2709 * Emulex HBA is removed from PCI bus, it performs all the necessary cleanup 2710 * for the HBA device to be removed from the PCI subsystem properly. 2711 **/ 2712 static void __devexit 2713 lpfc_pci_remove_one(struct pci_dev *pdev) 2714 { 2715 struct Scsi_Host *shost = pci_get_drvdata(pdev); 2716 struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; 2717 struct lpfc_vport **vports; 2718 struct lpfc_hba *phba = vport->phba; 2719 int i; 2720 int bars = pci_select_bars(pdev, IORESOURCE_MEM); 2721 2722 spin_lock_irq(&phba->hbalock); 2723 vport->load_flag |= FC_UNLOADING; 2724 spin_unlock_irq(&phba->hbalock); 2725 2726 lpfc_free_sysfs_attr(vport); 2727 2728 kthread_stop(phba->worker_thread); 2729 2730 /* Release all the vports against this physical port */ 2731 vports = lpfc_create_vport_work_array(phba); 2732 if (vports != NULL) 2733 for (i = 1; i <= phba->max_vpi && vports[i] != NULL; i++) 2734 fc_vport_terminate(vports[i]->fc_vport); 2735 lpfc_destroy_vport_work_array(phba, vports); 2736 2737 /* Remove FC host and then SCSI host with the physical port */ 2738 fc_remove_host(shost); 2739 scsi_remove_host(shost); 2740 lpfc_cleanup(vport); 2741 2742 /* 2743 * Bring down the SLI Layer. This step disable all interrupts, 2744 * clears the rings, discards all mailbox commands, and resets 2745 * the HBA. 2746 */ 2747 lpfc_sli_hba_down(phba); 2748 lpfc_sli_brdrestart(phba); 2749 2750 lpfc_stop_phba_timers(phba); 2751 spin_lock_irq(&phba->hbalock); 2752 list_del_init(&vport->listentry); 2753 spin_unlock_irq(&phba->hbalock); 2754 2755 lpfc_debugfs_terminate(vport); 2756 2757 if (phba->intr_type == MSIX) 2758 lpfc_disable_msix(phba); 2759 else { 2760 free_irq(phba->pcidev->irq, phba); 2761 if (phba->intr_type == MSI) 2762 pci_disable_msi(phba->pcidev); 2763 } 2764 2765 pci_set_drvdata(pdev, NULL); 2766 scsi_host_put(shost); 2767 2768 /* 2769 * Call scsi_free before mem_free since scsi bufs are released to their 2770 * corresponding pools here. 2771 */ 2772 lpfc_scsi_free(phba); 2773 lpfc_mem_free(phba); 2774 2775 dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(), 2776 phba->hbqslimp.virt, phba->hbqslimp.phys); 2777 2778 /* Free resources associated with SLI2 interface */ 2779 dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE, 2780 phba->slim2p.virt, phba->slim2p.phys); 2781 2782 /* unmap adapter SLIM and Control Registers */ 2783 iounmap(phba->ctrl_regs_memmap_p); 2784 iounmap(phba->slim_memmap_p); 2785 2786 idr_remove(&lpfc_hba_index, phba->brd_no); 2787 2788 kfree(phba); 2789 2790 pci_release_selected_regions(pdev, bars); 2791 pci_disable_device(pdev); 2792 } 2793 2794 /** 2795 * lpfc_pci_suspend_one: lpfc PCI func to suspend device for power management. 2796 * @pdev: pointer to PCI device 2797 * @msg: power management message 2798 * 2799 * This routine is to be registered to the kernel's PCI subsystem to support 2800 * system Power Management (PM). When PM invokes this method, it quiesces the 2801 * device by stopping the driver's worker thread for the device, turning off 2802 * device's interrupt and DMA, and bring the device offline. Note that as the 2803 * driver implements the minimum PM requirements to a power-aware driver's PM 2804 * support for suspend/resume -- all the possible PM messages (SUSPEND, 2805 * HIBERNATE, FREEZE) to the suspend() method call will be treated as SUSPEND 2806 * and the driver will fully reinitialize its device during resume() method 2807 * call, the driver will set device to PCI_D3hot state in PCI config space 2808 * instead of setting it according to the @msg provided by the PM. 2809 * 2810 * Return code 2811 * 0 - driver suspended the device 2812 * Error otherwise 2813 **/ 2814 static int 2815 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg) 2816 { 2817 struct Scsi_Host *shost = pci_get_drvdata(pdev); 2818 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; 2819 2820 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2821 "0473 PCI device Power Management suspend.\n"); 2822 2823 /* Bring down the device */ 2824 lpfc_offline_prep(phba); 2825 lpfc_offline(phba); 2826 kthread_stop(phba->worker_thread); 2827 2828 /* Disable interrupt from device */ 2829 lpfc_disable_intr(phba); 2830 2831 /* Save device state to PCI config space */ 2832 pci_save_state(pdev); 2833 pci_set_power_state(pdev, PCI_D3hot); 2834 2835 return 0; 2836 } 2837 2838 /** 2839 * lpfc_pci_resume_one: lpfc PCI func to resume device for power management. 2840 * @pdev: pointer to PCI device 2841 * 2842 * This routine is to be registered to the kernel's PCI subsystem to support 2843 * system Power Management (PM). When PM invokes this method, it restores 2844 * the device's PCI config space state and fully reinitializes the device 2845 * and brings it online. Note that as the driver implements the minimum PM 2846 * requirements to a power-aware driver's PM for suspend/resume -- all 2847 * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend() 2848 * method call will be treated as SUSPEND and the driver will fully 2849 * reinitialize its device during resume() method call, the device will be 2850 * set to PCI_D0 directly in PCI config space before restoring the state. 2851 * 2852 * Return code 2853 * 0 - driver suspended the device 2854 * Error otherwise 2855 **/ 2856 static int 2857 lpfc_pci_resume_one(struct pci_dev *pdev) 2858 { 2859 struct Scsi_Host *shost = pci_get_drvdata(pdev); 2860 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; 2861 int error; 2862 2863 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2864 "0452 PCI device Power Management resume.\n"); 2865 2866 /* Restore device state from PCI config space */ 2867 pci_set_power_state(pdev, PCI_D0); 2868 pci_restore_state(pdev); 2869 if (pdev->is_busmaster) 2870 pci_set_master(pdev); 2871 2872 /* Startup the kernel thread for this host adapter. */ 2873 phba->worker_thread = kthread_run(lpfc_do_work, phba, 2874 "lpfc_worker_%d", phba->brd_no); 2875 if (IS_ERR(phba->worker_thread)) { 2876 error = PTR_ERR(phba->worker_thread); 2877 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2878 "0434 PM resume failed to start worker " 2879 "thread: error=x%x.\n", error); 2880 return error; 2881 } 2882 2883 /* Enable interrupt from device */ 2884 error = lpfc_enable_intr(phba); 2885 if (error) { 2886 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2887 "0430 PM resume Failed to enable interrupt: " 2888 "error=x%x.\n", error); 2889 return error; 2890 } 2891 2892 /* Restart HBA and bring it online */ 2893 lpfc_sli_brdrestart(phba); 2894 lpfc_online(phba); 2895 2896 return 0; 2897 } 2898 2899 /** 2900 * lpfc_io_error_detected: Driver method for handling PCI I/O error detected. 2901 * @pdev: pointer to PCI device. 2902 * @state: the current PCI connection state. 2903 * 2904 * This routine is registered to the PCI subsystem for error handling. This 2905 * function is called by the PCI subsystem after a PCI bus error affecting 2906 * this device has been detected. When this function is invoked, it will 2907 * need to stop all the I/Os and interrupt(s) to the device. Once that is 2908 * done, it will return PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to 2909 * perform proper recovery as desired. 2910 * 2911 * Return codes 2912 * PCI_ERS_RESULT_NEED_RESET - need to reset before recovery 2913 * PCI_ERS_RESULT_DISCONNECT - device could not be recovered 2914 **/ 2915 static pci_ers_result_t lpfc_io_error_detected(struct pci_dev *pdev, 2916 pci_channel_state_t state) 2917 { 2918 struct Scsi_Host *shost = pci_get_drvdata(pdev); 2919 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; 2920 struct lpfc_sli *psli = &phba->sli; 2921 struct lpfc_sli_ring *pring; 2922 2923 if (state == pci_channel_io_perm_failure) { 2924 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 2925 "0472 PCI channel I/O permanent failure\n"); 2926 /* Block all SCSI devices' I/Os on the host */ 2927 lpfc_scsi_dev_block(phba); 2928 /* Clean up all driver's outstanding SCSI I/Os */ 2929 lpfc_sli_flush_fcp_rings(phba); 2930 return PCI_ERS_RESULT_DISCONNECT; 2931 } 2932 2933 pci_disable_device(pdev); 2934 /* 2935 * There may be I/Os dropped by the firmware. 2936 * Error iocb (I/O) on txcmplq and let the SCSI layer 2937 * retry it after re-establishing link. 2938 */ 2939 pring = &psli->ring[psli->fcp_ring]; 2940 lpfc_sli_abort_iocb_ring(phba, pring); 2941 2942 if (phba->intr_type == MSIX) 2943 lpfc_disable_msix(phba); 2944 else { 2945 free_irq(phba->pcidev->irq, phba); 2946 if (phba->intr_type == MSI) 2947 pci_disable_msi(phba->pcidev); 2948 } 2949 2950 /* Request a slot reset. */ 2951 return PCI_ERS_RESULT_NEED_RESET; 2952 } 2953 2954 /** 2955 * lpfc_io_slot_reset: Restart a PCI device from scratch. 2956 * @pdev: pointer to PCI device. 2957 * 2958 * This routine is registered to the PCI subsystem for error handling. This is 2959 * called after PCI bus has been reset to restart the PCI card from scratch, 2960 * as if from a cold-boot. During the PCI subsystem error recovery, after the 2961 * driver returns PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform 2962 * proper error recovery and then call this routine before calling the .resume 2963 * method to recover the device. This function will initialize the HBA device, 2964 * enable the interrupt, but it will just put the HBA to offline state without 2965 * passing any I/O traffic. 2966 * 2967 * Return codes 2968 * PCI_ERS_RESULT_RECOVERED - the device has been recovered 2969 * PCI_ERS_RESULT_DISCONNECT - device could not be recovered 2970 */ 2971 static pci_ers_result_t lpfc_io_slot_reset(struct pci_dev *pdev) 2972 { 2973 struct Scsi_Host *shost = pci_get_drvdata(pdev); 2974 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; 2975 struct lpfc_sli *psli = &phba->sli; 2976 int error, retval; 2977 2978 dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n"); 2979 if (pci_enable_device_mem(pdev)) { 2980 printk(KERN_ERR "lpfc: Cannot re-enable " 2981 "PCI device after reset.\n"); 2982 return PCI_ERS_RESULT_DISCONNECT; 2983 } 2984 2985 pci_set_master(pdev); 2986 2987 spin_lock_irq(&phba->hbalock); 2988 psli->sli_flag &= ~LPFC_SLI2_ACTIVE; 2989 spin_unlock_irq(&phba->hbalock); 2990 2991 /* Enable configured interrupt method */ 2992 phba->intr_type = NONE; 2993 if (phba->cfg_use_msi == 2) { 2994 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */ 2995 error = lpfc_sli_config_port(phba, 3); 2996 if (error) 2997 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 2998 "0478 Firmware not capable of SLI 3 mode.\n"); 2999 else { 3000 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 3001 "0479 Firmware capable of SLI 3 mode.\n"); 3002 /* Now, try to enable MSI-X interrupt mode */ 3003 error = lpfc_enable_msix(phba); 3004 if (!error) { 3005 phba->intr_type = MSIX; 3006 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 3007 "0480 enable MSI-X mode.\n"); 3008 } 3009 } 3010 } 3011 3012 /* Fallback to MSI if MSI-X initialization failed */ 3013 if (phba->cfg_use_msi >= 1 && phba->intr_type == NONE) { 3014 retval = pci_enable_msi(phba->pcidev); 3015 if (!retval) { 3016 phba->intr_type = MSI; 3017 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 3018 "0481 enable MSI mode.\n"); 3019 } else 3020 lpfc_printf_log(phba, KERN_INFO, LOG_INIT, 3021 "0470 enable IRQ mode.\n"); 3022 } 3023 3024 /* MSI-X is the only case the doesn't need to call request_irq */ 3025 if (phba->intr_type != MSIX) { 3026 retval = request_irq(phba->pcidev->irq, lpfc_intr_handler, 3027 IRQF_SHARED, LPFC_DRIVER_NAME, phba); 3028 if (retval) { 3029 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 3030 "0471 Enable interrupt handler " 3031 "failed\n"); 3032 } else if (phba->intr_type != MSI) 3033 phba->intr_type = INTx; 3034 } 3035 3036 /* Take device offline; this will perform cleanup */ 3037 lpfc_offline(phba); 3038 lpfc_sli_brdrestart(phba); 3039 3040 return PCI_ERS_RESULT_RECOVERED; 3041 } 3042 3043 /** 3044 * lpfc_io_resume: Resume PCI I/O operation. 3045 * @pdev: pointer to PCI device 3046 * 3047 * This routine is registered to the PCI subsystem for error handling. It is 3048 * called when kernel error recovery tells the lpfc driver that it is ok to 3049 * resume normal PCI operation after PCI bus error recovery. After this call, 3050 * traffic can start to flow from this device again. 3051 */ 3052 static void lpfc_io_resume(struct pci_dev *pdev) 3053 { 3054 struct Scsi_Host *shost = pci_get_drvdata(pdev); 3055 struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba; 3056 3057 lpfc_online(phba); 3058 } 3059 3060 static struct pci_device_id lpfc_id_table[] = { 3061 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER, 3062 PCI_ANY_ID, PCI_ANY_ID, }, 3063 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY, 3064 PCI_ANY_ID, PCI_ANY_ID, }, 3065 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR, 3066 PCI_ANY_ID, PCI_ANY_ID, }, 3067 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS, 3068 PCI_ANY_ID, PCI_ANY_ID, }, 3069 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR, 3070 PCI_ANY_ID, PCI_ANY_ID, }, 3071 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY, 3072 PCI_ANY_ID, PCI_ANY_ID, }, 3073 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY, 3074 PCI_ANY_ID, PCI_ANY_ID, }, 3075 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY, 3076 PCI_ANY_ID, PCI_ANY_ID, }, 3077 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY, 3078 PCI_ANY_ID, PCI_ANY_ID, }, 3079 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE, 3080 PCI_ANY_ID, PCI_ANY_ID, }, 3081 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP, 3082 PCI_ANY_ID, PCI_ANY_ID, }, 3083 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP, 3084 PCI_ANY_ID, PCI_ANY_ID, }, 3085 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS, 3086 PCI_ANY_ID, PCI_ANY_ID, }, 3087 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP, 3088 PCI_ANY_ID, PCI_ANY_ID, }, 3089 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP, 3090 PCI_ANY_ID, PCI_ANY_ID, }, 3091 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID, 3092 PCI_ANY_ID, PCI_ANY_ID, }, 3093 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB, 3094 PCI_ANY_ID, PCI_ANY_ID, }, 3095 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR, 3096 PCI_ANY_ID, PCI_ANY_ID, }, 3097 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET, 3098 PCI_ANY_ID, PCI_ANY_ID, }, 3099 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP, 3100 PCI_ANY_ID, PCI_ANY_ID, }, 3101 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP, 3102 PCI_ANY_ID, PCI_ANY_ID, }, 3103 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID, 3104 PCI_ANY_ID, PCI_ANY_ID, }, 3105 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB, 3106 PCI_ANY_ID, PCI_ANY_ID, }, 3107 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY, 3108 PCI_ANY_ID, PCI_ANY_ID, }, 3109 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101, 3110 PCI_ANY_ID, PCI_ANY_ID, }, 3111 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S, 3112 PCI_ANY_ID, PCI_ANY_ID, }, 3113 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S, 3114 PCI_ANY_ID, PCI_ANY_ID, }, 3115 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S, 3116 PCI_ANY_ID, PCI_ANY_ID, }, 3117 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT, 3118 PCI_ANY_ID, PCI_ANY_ID, }, 3119 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID, 3120 PCI_ANY_ID, PCI_ANY_ID, }, 3121 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB, 3122 PCI_ANY_ID, PCI_ANY_ID, }, 3123 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP, 3124 PCI_ANY_ID, PCI_ANY_ID, }, 3125 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP, 3126 PCI_ANY_ID, PCI_ANY_ID, }, 3127 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S, 3128 PCI_ANY_ID, PCI_ANY_ID, }, 3129 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF, 3130 PCI_ANY_ID, PCI_ANY_ID, }, 3131 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF, 3132 PCI_ANY_ID, PCI_ANY_ID, }, 3133 {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S, 3134 PCI_ANY_ID, PCI_ANY_ID, }, 3135 { 0 } 3136 }; 3137 3138 MODULE_DEVICE_TABLE(pci, lpfc_id_table); 3139 3140 static struct pci_error_handlers lpfc_err_handler = { 3141 .error_detected = lpfc_io_error_detected, 3142 .slot_reset = lpfc_io_slot_reset, 3143 .resume = lpfc_io_resume, 3144 }; 3145 3146 static struct pci_driver lpfc_driver = { 3147 .name = LPFC_DRIVER_NAME, 3148 .id_table = lpfc_id_table, 3149 .probe = lpfc_pci_probe_one, 3150 .remove = __devexit_p(lpfc_pci_remove_one), 3151 .suspend = lpfc_pci_suspend_one, 3152 .resume = lpfc_pci_resume_one, 3153 .err_handler = &lpfc_err_handler, 3154 }; 3155 3156 /** 3157 * lpfc_init: lpfc module initialization routine. 3158 * 3159 * This routine is to be invoked when the lpfc module is loaded into the 3160 * kernel. The special kernel macro module_init() is used to indicate the 3161 * role of this routine to the kernel as lpfc module entry point. 3162 * 3163 * Return codes 3164 * 0 - successful 3165 * -ENOMEM - FC attach transport failed 3166 * all others - failed 3167 */ 3168 static int __init 3169 lpfc_init(void) 3170 { 3171 int error = 0; 3172 3173 printk(LPFC_MODULE_DESC "\n"); 3174 printk(LPFC_COPYRIGHT "\n"); 3175 3176 if (lpfc_enable_npiv) { 3177 lpfc_transport_functions.vport_create = lpfc_vport_create; 3178 lpfc_transport_functions.vport_delete = lpfc_vport_delete; 3179 } 3180 lpfc_transport_template = 3181 fc_attach_transport(&lpfc_transport_functions); 3182 if (lpfc_transport_template == NULL) 3183 return -ENOMEM; 3184 if (lpfc_enable_npiv) { 3185 lpfc_vport_transport_template = 3186 fc_attach_transport(&lpfc_vport_transport_functions); 3187 if (lpfc_vport_transport_template == NULL) { 3188 fc_release_transport(lpfc_transport_template); 3189 return -ENOMEM; 3190 } 3191 } 3192 error = pci_register_driver(&lpfc_driver); 3193 if (error) { 3194 fc_release_transport(lpfc_transport_template); 3195 if (lpfc_enable_npiv) 3196 fc_release_transport(lpfc_vport_transport_template); 3197 } 3198 3199 return error; 3200 } 3201 3202 /** 3203 * lpfc_exit: lpfc module removal routine. 3204 * 3205 * This routine is invoked when the lpfc module is removed from the kernel. 3206 * The special kernel macro module_exit() is used to indicate the role of 3207 * this routine to the kernel as lpfc module exit point. 3208 */ 3209 static void __exit 3210 lpfc_exit(void) 3211 { 3212 pci_unregister_driver(&lpfc_driver); 3213 fc_release_transport(lpfc_transport_template); 3214 if (lpfc_enable_npiv) 3215 fc_release_transport(lpfc_vport_transport_template); 3216 } 3217 3218 module_init(lpfc_init); 3219 module_exit(lpfc_exit); 3220 MODULE_LICENSE("GPL"); 3221 MODULE_DESCRIPTION(LPFC_MODULE_DESC); 3222 MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com"); 3223 MODULE_VERSION("0:" LPFC_DRIVER_VERSION); 3224