1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2004-2007 Emulex. All rights reserved. * 5 * EMULEX and SLI are trademarks of Emulex. * 6 * www.emulex.com * 7 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 8 * * 9 * This program is free software; you can redistribute it and/or * 10 * modify it under the terms of version 2 of the GNU General * 11 * Public License as published by the Free Software Foundation. * 12 * This program is distributed in the hope that it will be useful. * 13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 17 * TO BE LEGALLY INVALID. See the GNU General Public License for * 18 * more details, a copy of which can be found in the file COPYING * 19 * included with this package. * 20 *******************************************************************/ 21 22 #include <linux/blkdev.h> 23 #include <linux/pci.h> 24 #include <linux/kthread.h> 25 #include <linux/interrupt.h> 26 27 #include <scsi/scsi.h> 28 #include <scsi/scsi_device.h> 29 #include <scsi/scsi_host.h> 30 #include <scsi/scsi_transport_fc.h> 31 32 #include "lpfc_hw.h" 33 #include "lpfc_disc.h" 34 #include "lpfc_sli.h" 35 #include "lpfc_scsi.h" 36 #include "lpfc.h" 37 #include "lpfc_logmsg.h" 38 #include "lpfc_crtn.h" 39 #include "lpfc_vport.h" 40 #include "lpfc_debugfs.h" 41 42 /* AlpaArray for assignment of scsid for scan-down and bind_method */ 43 static uint8_t lpfcAlpaArray[] = { 44 0xEF, 0xE8, 0xE4, 0xE2, 0xE1, 0xE0, 0xDC, 0xDA, 0xD9, 0xD6, 45 0xD5, 0xD4, 0xD3, 0xD2, 0xD1, 0xCE, 0xCD, 0xCC, 0xCB, 0xCA, 46 0xC9, 0xC7, 0xC6, 0xC5, 0xC3, 0xBC, 0xBA, 0xB9, 0xB6, 0xB5, 47 0xB4, 0xB3, 0xB2, 0xB1, 0xAE, 0xAD, 0xAC, 0xAB, 0xAA, 0xA9, 48 0xA7, 0xA6, 0xA5, 0xA3, 0x9F, 0x9E, 0x9D, 0x9B, 0x98, 0x97, 49 0x90, 0x8F, 0x88, 0x84, 0x82, 0x81, 0x80, 0x7C, 0x7A, 0x79, 50 0x76, 0x75, 0x74, 0x73, 0x72, 0x71, 0x6E, 0x6D, 0x6C, 0x6B, 51 0x6A, 0x69, 0x67, 0x66, 0x65, 0x63, 0x5C, 0x5A, 0x59, 0x56, 52 0x55, 0x54, 0x53, 0x52, 0x51, 0x4E, 0x4D, 0x4C, 0x4B, 0x4A, 53 0x49, 0x47, 0x46, 0x45, 0x43, 0x3C, 0x3A, 0x39, 0x36, 0x35, 54 0x34, 0x33, 0x32, 0x31, 0x2E, 0x2D, 0x2C, 0x2B, 0x2A, 0x29, 55 0x27, 0x26, 0x25, 0x23, 0x1F, 0x1E, 0x1D, 0x1B, 0x18, 0x17, 56 0x10, 0x0F, 0x08, 0x04, 0x02, 0x01 57 }; 58 59 static void lpfc_disc_timeout_handler(struct lpfc_vport *); 60 61 void 62 lpfc_terminate_rport_io(struct fc_rport *rport) 63 { 64 struct lpfc_rport_data *rdata; 65 struct lpfc_nodelist * ndlp; 66 struct lpfc_hba *phba; 67 68 rdata = rport->dd_data; 69 ndlp = rdata->pnode; 70 71 if (!ndlp) { 72 if (rport->roles & FC_RPORT_ROLE_FCP_TARGET) 73 printk(KERN_ERR "Cannot find remote node" 74 " to terminate I/O Data x%x\n", 75 rport->port_id); 76 return; 77 } 78 79 phba = ndlp->vport->phba; 80 81 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 82 "rport terminate: sid:x%x did:x%x flg:x%x", 83 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 84 85 if (ndlp->nlp_sid != NLP_NO_SID) { 86 lpfc_sli_abort_iocb(ndlp->vport, 87 &phba->sli.ring[phba->sli.fcp_ring], 88 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 89 } 90 91 /* 92 * A device is normally blocked for rediscovery and unblocked when 93 * devloss timeout happens. In case a vport is removed or driver 94 * unloaded before devloss timeout happens, we need to unblock here. 95 */ 96 scsi_target_unblock(&rport->dev); 97 return; 98 } 99 100 /* 101 * This function will be called when dev_loss_tmo fire. 102 */ 103 void 104 lpfc_dev_loss_tmo_callbk(struct fc_rport *rport) 105 { 106 struct lpfc_rport_data *rdata; 107 struct lpfc_nodelist * ndlp; 108 struct lpfc_vport *vport; 109 struct lpfc_hba *phba; 110 struct completion devloss_compl; 111 struct lpfc_work_evt *evtp; 112 113 rdata = rport->dd_data; 114 ndlp = rdata->pnode; 115 116 if (!ndlp) { 117 if (rport->scsi_target_id != -1) { 118 printk(KERN_ERR "Cannot find remote node" 119 " for rport in dev_loss_tmo_callbk x%x\n", 120 rport->port_id); 121 } 122 return; 123 } 124 125 vport = ndlp->vport; 126 phba = vport->phba; 127 128 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 129 "rport devlosscb: sid:x%x did:x%x flg:x%x", 130 ndlp->nlp_sid, ndlp->nlp_DID, ndlp->nlp_flag); 131 132 init_completion(&devloss_compl); 133 evtp = &ndlp->dev_loss_evt; 134 135 if (!list_empty(&evtp->evt_listp)) 136 return; 137 138 spin_lock_irq(&phba->hbalock); 139 evtp->evt_arg1 = ndlp; 140 evtp->evt_arg2 = &devloss_compl; 141 evtp->evt = LPFC_EVT_DEV_LOSS; 142 list_add_tail(&evtp->evt_listp, &phba->work_list); 143 if (phba->work_wait) 144 wake_up(phba->work_wait); 145 146 spin_unlock_irq(&phba->hbalock); 147 148 wait_for_completion(&devloss_compl); 149 150 return; 151 } 152 153 /* 154 * This function is called from the worker thread when dev_loss_tmo 155 * expire. 156 */ 157 void 158 lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp) 159 { 160 struct lpfc_rport_data *rdata; 161 struct fc_rport *rport; 162 struct lpfc_vport *vport; 163 struct lpfc_hba *phba; 164 uint8_t *name; 165 int warn_on = 0; 166 167 rport = ndlp->rport; 168 169 if (!rport) 170 return; 171 172 rdata = rport->dd_data; 173 name = (uint8_t *) &ndlp->nlp_portname; 174 vport = ndlp->vport; 175 phba = vport->phba; 176 177 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 178 "rport devlosstmo:did:x%x type:x%x id:x%x", 179 ndlp->nlp_DID, ndlp->nlp_type, rport->scsi_target_id); 180 181 if (!(vport->load_flag & FC_UNLOADING) && 182 ndlp->nlp_state == NLP_STE_MAPPED_NODE) 183 return; 184 185 if (ndlp->nlp_type & NLP_FABRIC) { 186 int put_node; 187 int put_rport; 188 189 /* We will clean up these Nodes in linkup */ 190 put_node = rdata->pnode != NULL; 191 put_rport = ndlp->rport != NULL; 192 rdata->pnode = NULL; 193 ndlp->rport = NULL; 194 if (put_node) 195 lpfc_nlp_put(ndlp); 196 if (put_rport) 197 put_device(&rport->dev); 198 return; 199 } 200 201 if (ndlp->nlp_sid != NLP_NO_SID) { 202 warn_on = 1; 203 /* flush the target */ 204 lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], 205 ndlp->nlp_sid, 0, LPFC_CTX_TGT); 206 } 207 if (vport->load_flag & FC_UNLOADING) 208 warn_on = 0; 209 210 if (warn_on) { 211 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 212 "0203 Devloss timeout on " 213 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 214 "NPort x%x Data: x%x x%x x%x\n", 215 *name, *(name+1), *(name+2), *(name+3), 216 *(name+4), *(name+5), *(name+6), *(name+7), 217 ndlp->nlp_DID, ndlp->nlp_flag, 218 ndlp->nlp_state, ndlp->nlp_rpi); 219 } else { 220 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 221 "0204 Devloss timeout on " 222 "WWPN %x:%x:%x:%x:%x:%x:%x:%x " 223 "NPort x%x Data: x%x x%x x%x\n", 224 *name, *(name+1), *(name+2), *(name+3), 225 *(name+4), *(name+5), *(name+6), *(name+7), 226 ndlp->nlp_DID, ndlp->nlp_flag, 227 ndlp->nlp_state, ndlp->nlp_rpi); 228 } 229 230 if (!(vport->load_flag & FC_UNLOADING) && 231 !(ndlp->nlp_flag & NLP_DELAY_TMO) && 232 !(ndlp->nlp_flag & NLP_NPR_2B_DISC) && 233 (ndlp->nlp_state != NLP_STE_UNMAPPED_NODE)) 234 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 235 else { 236 int put_node; 237 int put_rport; 238 239 put_node = rdata->pnode != NULL; 240 put_rport = ndlp->rport != NULL; 241 rdata->pnode = NULL; 242 ndlp->rport = NULL; 243 if (put_node) 244 lpfc_nlp_put(ndlp); 245 if (put_rport) 246 put_device(&rport->dev); 247 } 248 } 249 250 251 void 252 lpfc_worker_wake_up(struct lpfc_hba *phba) 253 { 254 wake_up(phba->work_wait); 255 return; 256 } 257 258 static void 259 lpfc_work_list_done(struct lpfc_hba *phba) 260 { 261 struct lpfc_work_evt *evtp = NULL; 262 struct lpfc_nodelist *ndlp; 263 struct lpfc_vport *vport; 264 int free_evt; 265 266 spin_lock_irq(&phba->hbalock); 267 while (!list_empty(&phba->work_list)) { 268 list_remove_head((&phba->work_list), evtp, typeof(*evtp), 269 evt_listp); 270 spin_unlock_irq(&phba->hbalock); 271 free_evt = 1; 272 switch (evtp->evt) { 273 case LPFC_EVT_DEV_LOSS_DELAY: 274 free_evt = 0; /* evt is part of ndlp */ 275 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 276 vport = ndlp->vport; 277 if (!vport) 278 break; 279 280 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 281 "rport devlossdly:did:x%x flg:x%x", 282 ndlp->nlp_DID, ndlp->nlp_flag, 0); 283 284 if (!(vport->load_flag & FC_UNLOADING) && 285 !(ndlp->nlp_flag & NLP_DELAY_TMO) && 286 !(ndlp->nlp_flag & NLP_NPR_2B_DISC)) { 287 lpfc_disc_state_machine(vport, ndlp, NULL, 288 NLP_EVT_DEVICE_RM); 289 } 290 break; 291 case LPFC_EVT_ELS_RETRY: 292 ndlp = (struct lpfc_nodelist *) (evtp->evt_arg1); 293 lpfc_els_retry_delay_handler(ndlp); 294 free_evt = 0; /* evt is part of ndlp */ 295 break; 296 case LPFC_EVT_DEV_LOSS: 297 ndlp = (struct lpfc_nodelist *)(evtp->evt_arg1); 298 lpfc_nlp_get(ndlp); 299 lpfc_dev_loss_tmo_handler(ndlp); 300 free_evt = 0; 301 complete((struct completion *)(evtp->evt_arg2)); 302 lpfc_nlp_put(ndlp); 303 break; 304 case LPFC_EVT_ONLINE: 305 if (phba->link_state < LPFC_LINK_DOWN) 306 *(int *) (evtp->evt_arg1) = lpfc_online(phba); 307 else 308 *(int *) (evtp->evt_arg1) = 0; 309 complete((struct completion *)(evtp->evt_arg2)); 310 break; 311 case LPFC_EVT_OFFLINE_PREP: 312 if (phba->link_state >= LPFC_LINK_DOWN) 313 lpfc_offline_prep(phba); 314 *(int *)(evtp->evt_arg1) = 0; 315 complete((struct completion *)(evtp->evt_arg2)); 316 break; 317 case LPFC_EVT_OFFLINE: 318 lpfc_offline(phba); 319 lpfc_sli_brdrestart(phba); 320 *(int *)(evtp->evt_arg1) = 321 lpfc_sli_brdready(phba, HS_FFRDY | HS_MBRDY); 322 lpfc_unblock_mgmt_io(phba); 323 complete((struct completion *)(evtp->evt_arg2)); 324 break; 325 case LPFC_EVT_WARM_START: 326 lpfc_offline(phba); 327 lpfc_reset_barrier(phba); 328 lpfc_sli_brdreset(phba); 329 lpfc_hba_down_post(phba); 330 *(int *)(evtp->evt_arg1) = 331 lpfc_sli_brdready(phba, HS_MBRDY); 332 lpfc_unblock_mgmt_io(phba); 333 complete((struct completion *)(evtp->evt_arg2)); 334 break; 335 case LPFC_EVT_KILL: 336 lpfc_offline(phba); 337 *(int *)(evtp->evt_arg1) 338 = (phba->pport->stopped) 339 ? 0 : lpfc_sli_brdkill(phba); 340 lpfc_unblock_mgmt_io(phba); 341 complete((struct completion *)(evtp->evt_arg2)); 342 break; 343 } 344 if (free_evt) 345 kfree(evtp); 346 spin_lock_irq(&phba->hbalock); 347 } 348 spin_unlock_irq(&phba->hbalock); 349 350 } 351 352 static void 353 lpfc_work_done(struct lpfc_hba *phba) 354 { 355 struct lpfc_sli_ring *pring; 356 uint32_t ha_copy, status, control, work_port_events; 357 struct lpfc_vport **vports; 358 struct lpfc_vport *vport; 359 int i; 360 361 spin_lock_irq(&phba->hbalock); 362 ha_copy = phba->work_ha; 363 phba->work_ha = 0; 364 spin_unlock_irq(&phba->hbalock); 365 366 if (ha_copy & HA_ERATT) 367 lpfc_handle_eratt(phba); 368 369 if (ha_copy & HA_MBATT) 370 lpfc_sli_handle_mb_event(phba); 371 372 if (ha_copy & HA_LATT) 373 lpfc_handle_latt(phba); 374 vports = lpfc_create_vport_work_array(phba); 375 if (vports != NULL) 376 for(i = 0; i < LPFC_MAX_VPORTS; i++) { 377 /* 378 * We could have no vports in array if unloading, so if 379 * this happens then just use the pport 380 */ 381 if (vports[i] == NULL && i == 0) 382 vport = phba->pport; 383 else 384 vport = vports[i]; 385 if (vport == NULL) 386 break; 387 work_port_events = vport->work_port_events; 388 if (work_port_events & WORKER_DISC_TMO) 389 lpfc_disc_timeout_handler(vport); 390 if (work_port_events & WORKER_ELS_TMO) 391 lpfc_els_timeout_handler(vport); 392 if (work_port_events & WORKER_HB_TMO) 393 lpfc_hb_timeout_handler(phba); 394 if (work_port_events & WORKER_MBOX_TMO) 395 lpfc_mbox_timeout_handler(phba); 396 if (work_port_events & WORKER_FABRIC_BLOCK_TMO) 397 lpfc_unblock_fabric_iocbs(phba); 398 if (work_port_events & WORKER_FDMI_TMO) 399 lpfc_fdmi_timeout_handler(vport); 400 if (work_port_events & WORKER_RAMP_DOWN_QUEUE) 401 lpfc_ramp_down_queue_handler(phba); 402 if (work_port_events & WORKER_RAMP_UP_QUEUE) 403 lpfc_ramp_up_queue_handler(phba); 404 spin_lock_irq(&vport->work_port_lock); 405 vport->work_port_events &= ~work_port_events; 406 spin_unlock_irq(&vport->work_port_lock); 407 } 408 lpfc_destroy_vport_work_array(vports); 409 410 pring = &phba->sli.ring[LPFC_ELS_RING]; 411 status = (ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING))); 412 status >>= (4*LPFC_ELS_RING); 413 if ((status & HA_RXMASK) 414 || (pring->flag & LPFC_DEFERRED_RING_EVENT)) { 415 if (pring->flag & LPFC_STOP_IOCB_MASK) { 416 pring->flag |= LPFC_DEFERRED_RING_EVENT; 417 } else { 418 lpfc_sli_handle_slow_ring_event(phba, pring, 419 (status & 420 HA_RXMASK)); 421 pring->flag &= ~LPFC_DEFERRED_RING_EVENT; 422 } 423 /* 424 * Turn on Ring interrupts 425 */ 426 spin_lock_irq(&phba->hbalock); 427 control = readl(phba->HCregaddr); 428 if (!(control & (HC_R0INT_ENA << LPFC_ELS_RING))) { 429 lpfc_debugfs_slow_ring_trc(phba, 430 "WRK Enable ring: cntl:x%x hacopy:x%x", 431 control, ha_copy, 0); 432 433 control |= (HC_R0INT_ENA << LPFC_ELS_RING); 434 writel(control, phba->HCregaddr); 435 readl(phba->HCregaddr); /* flush */ 436 } 437 else { 438 lpfc_debugfs_slow_ring_trc(phba, 439 "WRK Ring ok: cntl:x%x hacopy:x%x", 440 control, ha_copy, 0); 441 } 442 spin_unlock_irq(&phba->hbalock); 443 } 444 lpfc_work_list_done(phba); 445 } 446 447 static int 448 check_work_wait_done(struct lpfc_hba *phba) 449 { 450 struct lpfc_vport *vport; 451 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; 452 int rc = 0; 453 454 spin_lock_irq(&phba->hbalock); 455 list_for_each_entry(vport, &phba->port_list, listentry) { 456 if (vport->work_port_events) { 457 rc = 1; 458 break; 459 } 460 } 461 if (rc || phba->work_ha || (!list_empty(&phba->work_list)) || 462 kthread_should_stop() || pring->flag & LPFC_DEFERRED_RING_EVENT) { 463 rc = 1; 464 phba->work_found++; 465 } else 466 phba->work_found = 0; 467 spin_unlock_irq(&phba->hbalock); 468 return rc; 469 } 470 471 472 int 473 lpfc_do_work(void *p) 474 { 475 struct lpfc_hba *phba = p; 476 int rc; 477 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(work_waitq); 478 479 set_user_nice(current, -20); 480 phba->work_wait = &work_waitq; 481 phba->work_found = 0; 482 483 while (1) { 484 485 rc = wait_event_interruptible(work_waitq, 486 check_work_wait_done(phba)); 487 488 BUG_ON(rc); 489 490 if (kthread_should_stop()) 491 break; 492 493 lpfc_work_done(phba); 494 495 /* If there is alot of slow ring work, like during link up 496 * check_work_wait_done() may cause this thread to not give 497 * up the CPU for very long periods of time. This may cause 498 * soft lockups or other problems. To avoid these situations 499 * give up the CPU here after LPFC_MAX_WORKER_ITERATION 500 * consecutive iterations. 501 */ 502 if (phba->work_found >= LPFC_MAX_WORKER_ITERATION) { 503 phba->work_found = 0; 504 schedule(); 505 } 506 } 507 phba->work_wait = NULL; 508 return 0; 509 } 510 511 /* 512 * This is only called to handle FC worker events. Since this a rare 513 * occurance, we allocate a struct lpfc_work_evt structure here instead of 514 * embedding it in the IOCB. 515 */ 516 int 517 lpfc_workq_post_event(struct lpfc_hba *phba, void *arg1, void *arg2, 518 uint32_t evt) 519 { 520 struct lpfc_work_evt *evtp; 521 unsigned long flags; 522 523 /* 524 * All Mailbox completions and LPFC_ELS_RING rcv ring IOCB events will 525 * be queued to worker thread for processing 526 */ 527 evtp = kmalloc(sizeof(struct lpfc_work_evt), GFP_ATOMIC); 528 if (!evtp) 529 return 0; 530 531 evtp->evt_arg1 = arg1; 532 evtp->evt_arg2 = arg2; 533 evtp->evt = evt; 534 535 spin_lock_irqsave(&phba->hbalock, flags); 536 list_add_tail(&evtp->evt_listp, &phba->work_list); 537 if (phba->work_wait) 538 lpfc_worker_wake_up(phba); 539 spin_unlock_irqrestore(&phba->hbalock, flags); 540 541 return 1; 542 } 543 544 void 545 lpfc_cleanup_rpis(struct lpfc_vport *vport, int remove) 546 { 547 struct lpfc_hba *phba = vport->phba; 548 struct lpfc_nodelist *ndlp, *next_ndlp; 549 int rc; 550 551 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) { 552 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 553 continue; 554 555 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) 556 lpfc_unreg_rpi(vport, ndlp); 557 558 /* Leave Fabric nodes alone on link down */ 559 if (!remove && ndlp->nlp_type & NLP_FABRIC) 560 continue; 561 rc = lpfc_disc_state_machine(vport, ndlp, NULL, 562 remove 563 ? NLP_EVT_DEVICE_RM 564 : NLP_EVT_DEVICE_RECOVERY); 565 } 566 if (phba->sli3_options & LPFC_SLI3_VPORT_TEARDOWN) { 567 lpfc_mbx_unreg_vpi(vport); 568 vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI; 569 } 570 } 571 572 static void 573 lpfc_linkdown_port(struct lpfc_vport *vport) 574 { 575 struct lpfc_nodelist *ndlp, *next_ndlp; 576 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 577 578 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKDOWN, 0); 579 580 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 581 "Link Down: state:x%x rtry:x%x flg:x%x", 582 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 583 584 /* Cleanup any outstanding RSCN activity */ 585 lpfc_els_flush_rscn(vport); 586 587 /* Cleanup any outstanding ELS commands */ 588 lpfc_els_flush_cmd(vport); 589 590 lpfc_cleanup_rpis(vport, 0); 591 592 /* free any ndlp's on unused list */ 593 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) 594 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 595 lpfc_drop_node(vport, ndlp); 596 597 /* Turn off discovery timer if its running */ 598 lpfc_can_disctmo(vport); 599 } 600 601 int 602 lpfc_linkdown(struct lpfc_hba *phba) 603 { 604 struct lpfc_vport *vport = phba->pport; 605 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 606 struct lpfc_vport **vports; 607 LPFC_MBOXQ_t *mb; 608 int i; 609 610 if (phba->link_state == LPFC_LINK_DOWN) { 611 return 0; 612 } 613 spin_lock_irq(&phba->hbalock); 614 if (phba->link_state > LPFC_LINK_DOWN) { 615 phba->link_state = LPFC_LINK_DOWN; 616 phba->pport->fc_flag &= ~FC_LBIT; 617 } 618 spin_unlock_irq(&phba->hbalock); 619 vports = lpfc_create_vport_work_array(phba); 620 if (vports != NULL) 621 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) { 622 /* Issue a LINK DOWN event to all nodes */ 623 lpfc_linkdown_port(vports[i]); 624 } 625 lpfc_destroy_vport_work_array(vports); 626 /* Clean up any firmware default rpi's */ 627 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 628 if (mb) { 629 lpfc_unreg_did(phba, 0xffff, 0xffffffff, mb); 630 mb->vport = vport; 631 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 632 if (lpfc_sli_issue_mbox(phba, mb, (MBX_NOWAIT | MBX_STOP_IOCB)) 633 == MBX_NOT_FINISHED) { 634 mempool_free(mb, phba->mbox_mem_pool); 635 } 636 } 637 638 /* Setup myDID for link up if we are in pt2pt mode */ 639 if (phba->pport->fc_flag & FC_PT2PT) { 640 phba->pport->fc_myDID = 0; 641 mb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 642 if (mb) { 643 lpfc_config_link(phba, mb); 644 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 645 mb->vport = vport; 646 if (lpfc_sli_issue_mbox(phba, mb, 647 (MBX_NOWAIT | MBX_STOP_IOCB)) 648 == MBX_NOT_FINISHED) { 649 mempool_free(mb, phba->mbox_mem_pool); 650 } 651 } 652 spin_lock_irq(shost->host_lock); 653 phba->pport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI); 654 spin_unlock_irq(shost->host_lock); 655 } 656 657 return 0; 658 } 659 660 static void 661 lpfc_linkup_cleanup_nodes(struct lpfc_vport *vport) 662 { 663 struct lpfc_nodelist *ndlp; 664 665 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 666 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 667 continue; 668 669 if (ndlp->nlp_type & NLP_FABRIC) { 670 /* On Linkup its safe to clean up the ndlp 671 * from Fabric connections. 672 */ 673 if (ndlp->nlp_DID != Fabric_DID) 674 lpfc_unreg_rpi(vport, ndlp); 675 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 676 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 677 /* Fail outstanding IO now since device is 678 * marked for PLOGI. 679 */ 680 lpfc_unreg_rpi(vport, ndlp); 681 } 682 } 683 } 684 685 static void 686 lpfc_linkup_port(struct lpfc_vport *vport) 687 { 688 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 689 struct lpfc_nodelist *ndlp, *next_ndlp; 690 struct lpfc_hba *phba = vport->phba; 691 692 if ((vport->load_flag & FC_UNLOADING) != 0) 693 return; 694 695 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 696 "Link Up: top:x%x speed:x%x flg:x%x", 697 phba->fc_topology, phba->fc_linkspeed, phba->link_flag); 698 699 /* If NPIV is not enabled, only bring the physical port up */ 700 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 701 (vport != phba->pport)) 702 return; 703 704 fc_host_post_event(shost, fc_get_event_number(), FCH_EVT_LINKUP, 0); 705 706 spin_lock_irq(shost->host_lock); 707 vport->fc_flag &= ~(FC_PT2PT | FC_PT2PT_PLOGI | FC_ABORT_DISCOVERY | 708 FC_RSCN_MODE | FC_NLP_MORE | FC_RSCN_DISCOVERY); 709 vport->fc_flag |= FC_NDISC_ACTIVE; 710 vport->fc_ns_retry = 0; 711 spin_unlock_irq(shost->host_lock); 712 713 if (vport->fc_flag & FC_LBIT) 714 lpfc_linkup_cleanup_nodes(vport); 715 716 /* free any ndlp's in unused state */ 717 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 718 nlp_listp) 719 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) 720 lpfc_drop_node(vport, ndlp); 721 } 722 723 static int 724 lpfc_linkup(struct lpfc_hba *phba) 725 { 726 struct lpfc_vport **vports; 727 int i; 728 729 phba->link_state = LPFC_LINK_UP; 730 731 /* Unblock fabric iocbs if they are blocked */ 732 clear_bit(FABRIC_COMANDS_BLOCKED, &phba->bit_flags); 733 del_timer_sync(&phba->fabric_block_timer); 734 735 vports = lpfc_create_vport_work_array(phba); 736 if (vports != NULL) 737 for(i = 0; i < LPFC_MAX_VPORTS && vports[i] != NULL; i++) 738 lpfc_linkup_port(vports[i]); 739 lpfc_destroy_vport_work_array(vports); 740 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 741 lpfc_issue_clear_la(phba, phba->pport); 742 743 return 0; 744 } 745 746 /* 747 * This routine handles processing a CLEAR_LA mailbox 748 * command upon completion. It is setup in the LPFC_MBOXQ 749 * as the completion routine when the command is 750 * handed off to the SLI layer. 751 */ 752 void 753 lpfc_mbx_cmpl_clear_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 754 { 755 struct lpfc_vport *vport = pmb->vport; 756 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 757 struct lpfc_sli *psli = &phba->sli; 758 MAILBOX_t *mb = &pmb->mb; 759 uint32_t control; 760 761 /* Since we don't do discovery right now, turn these off here */ 762 psli->ring[psli->extra_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 763 psli->ring[psli->fcp_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 764 psli->ring[psli->next_ring].flag &= ~LPFC_STOP_IOCB_EVENT; 765 766 /* Check for error */ 767 if ((mb->mbxStatus) && (mb->mbxStatus != 0x1601)) { 768 /* CLEAR_LA mbox error <mbxStatus> state <hba_state> */ 769 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 770 "0320 CLEAR_LA mbxStatus error x%x hba " 771 "state x%x\n", 772 mb->mbxStatus, vport->port_state); 773 phba->link_state = LPFC_HBA_ERROR; 774 goto out; 775 } 776 777 if (vport->port_type == LPFC_PHYSICAL_PORT) 778 phba->link_state = LPFC_HBA_READY; 779 780 spin_lock_irq(&phba->hbalock); 781 psli->sli_flag |= LPFC_PROCESS_LA; 782 control = readl(phba->HCregaddr); 783 control |= HC_LAINT_ENA; 784 writel(control, phba->HCregaddr); 785 readl(phba->HCregaddr); /* flush */ 786 spin_unlock_irq(&phba->hbalock); 787 return; 788 789 vport->num_disc_nodes = 0; 790 /* go thru NPR nodes and issue ELS PLOGIs */ 791 if (vport->fc_npr_cnt) 792 lpfc_els_disc_plogi(vport); 793 794 if (!vport->num_disc_nodes) { 795 spin_lock_irq(shost->host_lock); 796 vport->fc_flag &= ~FC_NDISC_ACTIVE; 797 spin_unlock_irq(shost->host_lock); 798 } 799 800 vport->port_state = LPFC_VPORT_READY; 801 802 out: 803 /* Device Discovery completes */ 804 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 805 "0225 Device Discovery completes\n"); 806 mempool_free(pmb, phba->mbox_mem_pool); 807 808 spin_lock_irq(shost->host_lock); 809 vport->fc_flag &= ~(FC_ABORT_DISCOVERY | FC_ESTABLISH_LINK); 810 spin_unlock_irq(shost->host_lock); 811 812 del_timer_sync(&phba->fc_estabtmo); 813 814 lpfc_can_disctmo(vport); 815 816 /* turn on Link Attention interrupts */ 817 818 spin_lock_irq(&phba->hbalock); 819 psli->sli_flag |= LPFC_PROCESS_LA; 820 control = readl(phba->HCregaddr); 821 control |= HC_LAINT_ENA; 822 writel(control, phba->HCregaddr); 823 readl(phba->HCregaddr); /* flush */ 824 spin_unlock_irq(&phba->hbalock); 825 826 return; 827 } 828 829 830 static void 831 lpfc_mbx_cmpl_local_config_link(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 832 { 833 struct lpfc_vport *vport = pmb->vport; 834 835 if (pmb->mb.mbxStatus) 836 goto out; 837 838 mempool_free(pmb, phba->mbox_mem_pool); 839 840 if (phba->fc_topology == TOPOLOGY_LOOP && 841 vport->fc_flag & FC_PUBLIC_LOOP && 842 !(vport->fc_flag & FC_LBIT)) { 843 /* Need to wait for FAN - use discovery timer 844 * for timeout. port_state is identically 845 * LPFC_LOCAL_CFG_LINK while waiting for FAN 846 */ 847 lpfc_set_disctmo(vport); 848 return; 849 } 850 851 /* Start discovery by sending a FLOGI. port_state is identically 852 * LPFC_FLOGI while waiting for FLOGI cmpl 853 */ 854 if (vport->port_state != LPFC_FLOGI) { 855 vport->port_state = LPFC_FLOGI; 856 lpfc_set_disctmo(vport); 857 lpfc_initial_flogi(vport); 858 } 859 return; 860 861 out: 862 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 863 "0306 CONFIG_LINK mbxStatus error x%x " 864 "HBA state x%x\n", 865 pmb->mb.mbxStatus, vport->port_state); 866 mempool_free(pmb, phba->mbox_mem_pool); 867 868 lpfc_linkdown(phba); 869 870 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 871 "0200 CONFIG_LINK bad hba state x%x\n", 872 vport->port_state); 873 874 lpfc_issue_clear_la(phba, vport); 875 return; 876 } 877 878 static void 879 lpfc_mbx_cmpl_read_sparam(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 880 { 881 MAILBOX_t *mb = &pmb->mb; 882 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) pmb->context1; 883 struct lpfc_vport *vport = pmb->vport; 884 885 886 /* Check for error */ 887 if (mb->mbxStatus) { 888 /* READ_SPARAM mbox error <mbxStatus> state <hba_state> */ 889 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 890 "0319 READ_SPARAM mbxStatus error x%x " 891 "hba state x%x>\n", 892 mb->mbxStatus, vport->port_state); 893 lpfc_linkdown(phba); 894 goto out; 895 } 896 897 memcpy((uint8_t *) &vport->fc_sparam, (uint8_t *) mp->virt, 898 sizeof (struct serv_parm)); 899 if (phba->cfg_soft_wwnn) 900 u64_to_wwn(phba->cfg_soft_wwnn, 901 vport->fc_sparam.nodeName.u.wwn); 902 if (phba->cfg_soft_wwpn) 903 u64_to_wwn(phba->cfg_soft_wwpn, 904 vport->fc_sparam.portName.u.wwn); 905 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName, 906 sizeof(vport->fc_nodename)); 907 memcpy(&vport->fc_portname, &vport->fc_sparam.portName, 908 sizeof(vport->fc_portname)); 909 if (vport->port_type == LPFC_PHYSICAL_PORT) { 910 memcpy(&phba->wwnn, &vport->fc_nodename, sizeof(phba->wwnn)); 911 memcpy(&phba->wwpn, &vport->fc_portname, sizeof(phba->wwnn)); 912 } 913 914 lpfc_mbuf_free(phba, mp->virt, mp->phys); 915 kfree(mp); 916 mempool_free(pmb, phba->mbox_mem_pool); 917 return; 918 919 out: 920 pmb->context1 = NULL; 921 lpfc_mbuf_free(phba, mp->virt, mp->phys); 922 kfree(mp); 923 lpfc_issue_clear_la(phba, vport); 924 mempool_free(pmb, phba->mbox_mem_pool); 925 return; 926 } 927 928 static void 929 lpfc_mbx_process_link_up(struct lpfc_hba *phba, READ_LA_VAR *la) 930 { 931 struct lpfc_vport *vport = phba->pport; 932 LPFC_MBOXQ_t *sparam_mbox, *cfglink_mbox; 933 int i; 934 struct lpfc_dmabuf *mp; 935 int rc; 936 937 sparam_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 938 cfglink_mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 939 940 spin_lock_irq(&phba->hbalock); 941 switch (la->UlnkSpeed) { 942 case LA_1GHZ_LINK: 943 phba->fc_linkspeed = LA_1GHZ_LINK; 944 break; 945 case LA_2GHZ_LINK: 946 phba->fc_linkspeed = LA_2GHZ_LINK; 947 break; 948 case LA_4GHZ_LINK: 949 phba->fc_linkspeed = LA_4GHZ_LINK; 950 break; 951 case LA_8GHZ_LINK: 952 phba->fc_linkspeed = LA_8GHZ_LINK; 953 break; 954 default: 955 phba->fc_linkspeed = LA_UNKNW_LINK; 956 break; 957 } 958 959 phba->fc_topology = la->topology; 960 phba->link_flag &= ~LS_NPIV_FAB_SUPPORTED; 961 962 if (phba->fc_topology == TOPOLOGY_LOOP) { 963 phba->sli3_options &= ~LPFC_SLI3_NPIV_ENABLED; 964 965 /* Get Loop Map information */ 966 if (la->il) 967 vport->fc_flag |= FC_LBIT; 968 969 vport->fc_myDID = la->granted_AL_PA; 970 i = la->un.lilpBde64.tus.f.bdeSize; 971 972 if (i == 0) { 973 phba->alpa_map[0] = 0; 974 } else { 975 if (vport->cfg_log_verbose & LOG_LINK_EVENT) { 976 int numalpa, j, k; 977 union { 978 uint8_t pamap[16]; 979 struct { 980 uint32_t wd1; 981 uint32_t wd2; 982 uint32_t wd3; 983 uint32_t wd4; 984 } pa; 985 } un; 986 numalpa = phba->alpa_map[0]; 987 j = 0; 988 while (j < numalpa) { 989 memset(un.pamap, 0, 16); 990 for (k = 1; j < numalpa; k++) { 991 un.pamap[k - 1] = 992 phba->alpa_map[j + 1]; 993 j++; 994 if (k == 16) 995 break; 996 } 997 /* Link Up Event ALPA map */ 998 lpfc_printf_log(phba, 999 KERN_WARNING, 1000 LOG_LINK_EVENT, 1001 "1304 Link Up Event " 1002 "ALPA map Data: x%x " 1003 "x%x x%x x%x\n", 1004 un.pa.wd1, un.pa.wd2, 1005 un.pa.wd3, un.pa.wd4); 1006 } 1007 } 1008 } 1009 } else { 1010 if (!(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) { 1011 if (phba->max_vpi && phba->cfg_enable_npiv && 1012 (phba->sli_rev == 3)) 1013 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED; 1014 } 1015 vport->fc_myDID = phba->fc_pref_DID; 1016 vport->fc_flag |= FC_LBIT; 1017 } 1018 spin_unlock_irq(&phba->hbalock); 1019 1020 lpfc_linkup(phba); 1021 if (sparam_mbox) { 1022 lpfc_read_sparam(phba, sparam_mbox, 0); 1023 sparam_mbox->vport = vport; 1024 sparam_mbox->mbox_cmpl = lpfc_mbx_cmpl_read_sparam; 1025 rc = lpfc_sli_issue_mbox(phba, sparam_mbox, 1026 (MBX_NOWAIT | MBX_STOP_IOCB)); 1027 if (rc == MBX_NOT_FINISHED) { 1028 mp = (struct lpfc_dmabuf *) sparam_mbox->context1; 1029 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1030 kfree(mp); 1031 mempool_free(sparam_mbox, phba->mbox_mem_pool); 1032 if (cfglink_mbox) 1033 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 1034 goto out; 1035 } 1036 } 1037 1038 if (cfglink_mbox) { 1039 vport->port_state = LPFC_LOCAL_CFG_LINK; 1040 lpfc_config_link(phba, cfglink_mbox); 1041 cfglink_mbox->vport = vport; 1042 cfglink_mbox->mbox_cmpl = lpfc_mbx_cmpl_local_config_link; 1043 rc = lpfc_sli_issue_mbox(phba, cfglink_mbox, 1044 (MBX_NOWAIT | MBX_STOP_IOCB)); 1045 if (rc != MBX_NOT_FINISHED) 1046 return; 1047 mempool_free(cfglink_mbox, phba->mbox_mem_pool); 1048 } 1049 out: 1050 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1051 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1052 "0263 Discovery Mailbox error: state: 0x%x : %p %p\n", 1053 vport->port_state, sparam_mbox, cfglink_mbox); 1054 lpfc_issue_clear_la(phba, vport); 1055 return; 1056 } 1057 1058 static void 1059 lpfc_mbx_issue_link_down(struct lpfc_hba *phba) 1060 { 1061 uint32_t control; 1062 struct lpfc_sli *psli = &phba->sli; 1063 1064 lpfc_linkdown(phba); 1065 1066 /* turn on Link Attention interrupts - no CLEAR_LA needed */ 1067 spin_lock_irq(&phba->hbalock); 1068 psli->sli_flag |= LPFC_PROCESS_LA; 1069 control = readl(phba->HCregaddr); 1070 control |= HC_LAINT_ENA; 1071 writel(control, phba->HCregaddr); 1072 readl(phba->HCregaddr); /* flush */ 1073 spin_unlock_irq(&phba->hbalock); 1074 } 1075 1076 /* 1077 * This routine handles processing a READ_LA mailbox 1078 * command upon completion. It is setup in the LPFC_MBOXQ 1079 * as the completion routine when the command is 1080 * handed off to the SLI layer. 1081 */ 1082 void 1083 lpfc_mbx_cmpl_read_la(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1084 { 1085 struct lpfc_vport *vport = pmb->vport; 1086 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1087 READ_LA_VAR *la; 1088 MAILBOX_t *mb = &pmb->mb; 1089 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1090 1091 /* Check for error */ 1092 if (mb->mbxStatus) { 1093 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 1094 "1307 READ_LA mbox error x%x state x%x\n", 1095 mb->mbxStatus, vport->port_state); 1096 lpfc_mbx_issue_link_down(phba); 1097 phba->link_state = LPFC_HBA_ERROR; 1098 goto lpfc_mbx_cmpl_read_la_free_mbuf; 1099 } 1100 1101 la = (READ_LA_VAR *) & pmb->mb.un.varReadLA; 1102 1103 memcpy(&phba->alpa_map[0], mp->virt, 128); 1104 1105 spin_lock_irq(shost->host_lock); 1106 if (la->pb) 1107 vport->fc_flag |= FC_BYPASSED_MODE; 1108 else 1109 vport->fc_flag &= ~FC_BYPASSED_MODE; 1110 spin_unlock_irq(shost->host_lock); 1111 1112 if (((phba->fc_eventTag + 1) < la->eventTag) || 1113 (phba->fc_eventTag == la->eventTag)) { 1114 phba->fc_stat.LinkMultiEvent++; 1115 if (la->attType == AT_LINK_UP) 1116 if (phba->fc_eventTag != 0) 1117 lpfc_linkdown(phba); 1118 } 1119 1120 phba->fc_eventTag = la->eventTag; 1121 1122 if (la->attType == AT_LINK_UP) { 1123 phba->fc_stat.LinkUp++; 1124 if (phba->link_flag & LS_LOOPBACK_MODE) { 1125 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT, 1126 "1306 Link Up Event in loop back mode " 1127 "x%x received Data: x%x x%x x%x x%x\n", 1128 la->eventTag, phba->fc_eventTag, 1129 la->granted_AL_PA, la->UlnkSpeed, 1130 phba->alpa_map[0]); 1131 } else { 1132 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1133 "1303 Link Up Event x%x received " 1134 "Data: x%x x%x x%x x%x\n", 1135 la->eventTag, phba->fc_eventTag, 1136 la->granted_AL_PA, la->UlnkSpeed, 1137 phba->alpa_map[0]); 1138 } 1139 lpfc_mbx_process_link_up(phba, la); 1140 } else { 1141 phba->fc_stat.LinkDown++; 1142 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT, 1143 "1305 Link Down Event x%x received " 1144 "Data: x%x x%x x%x\n", 1145 la->eventTag, phba->fc_eventTag, 1146 phba->pport->port_state, vport->fc_flag); 1147 lpfc_mbx_issue_link_down(phba); 1148 } 1149 1150 lpfc_mbx_cmpl_read_la_free_mbuf: 1151 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1152 kfree(mp); 1153 mempool_free(pmb, phba->mbox_mem_pool); 1154 return; 1155 } 1156 1157 /* 1158 * This routine handles processing a REG_LOGIN mailbox 1159 * command upon completion. It is setup in the LPFC_MBOXQ 1160 * as the completion routine when the command is 1161 * handed off to the SLI layer. 1162 */ 1163 void 1164 lpfc_mbx_cmpl_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1165 { 1166 struct lpfc_vport *vport = pmb->vport; 1167 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1168 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 1169 1170 pmb->context1 = NULL; 1171 1172 /* Good status, call state machine */ 1173 lpfc_disc_state_machine(vport, ndlp, pmb, NLP_EVT_CMPL_REG_LOGIN); 1174 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1175 kfree(mp); 1176 mempool_free(pmb, phba->mbox_mem_pool); 1177 lpfc_nlp_put(ndlp); 1178 1179 return; 1180 } 1181 1182 static void 1183 lpfc_mbx_cmpl_unreg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1184 { 1185 MAILBOX_t *mb = &pmb->mb; 1186 struct lpfc_vport *vport = pmb->vport; 1187 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1188 1189 switch (mb->mbxStatus) { 1190 case 0x0011: 1191 case 0x0020: 1192 case 0x9700: 1193 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1194 "0911 cmpl_unreg_vpi, mb status = 0x%x\n", 1195 mb->mbxStatus); 1196 break; 1197 } 1198 vport->unreg_vpi_cmpl = VPORT_OK; 1199 mempool_free(pmb, phba->mbox_mem_pool); 1200 /* 1201 * This shost reference might have been taken at the beginning of 1202 * lpfc_vport_delete() 1203 */ 1204 if (vport->load_flag & FC_UNLOADING) 1205 scsi_host_put(shost); 1206 } 1207 1208 void 1209 lpfc_mbx_unreg_vpi(struct lpfc_vport *vport) 1210 { 1211 struct lpfc_hba *phba = vport->phba; 1212 LPFC_MBOXQ_t *mbox; 1213 int rc; 1214 1215 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1216 if (!mbox) 1217 return; 1218 1219 lpfc_unreg_vpi(phba, vport->vpi, mbox); 1220 mbox->vport = vport; 1221 mbox->mbox_cmpl = lpfc_mbx_cmpl_unreg_vpi; 1222 rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | MBX_STOP_IOCB)); 1223 if (rc == MBX_NOT_FINISHED) { 1224 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 1225 "1800 Could not issue unreg_vpi\n"); 1226 mempool_free(mbox, phba->mbox_mem_pool); 1227 vport->unreg_vpi_cmpl = VPORT_ERROR; 1228 } 1229 } 1230 1231 static void 1232 lpfc_mbx_cmpl_reg_vpi(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1233 { 1234 struct lpfc_vport *vport = pmb->vport; 1235 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1236 MAILBOX_t *mb = &pmb->mb; 1237 1238 switch (mb->mbxStatus) { 1239 case 0x0011: 1240 case 0x9601: 1241 case 0x9602: 1242 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1243 "0912 cmpl_reg_vpi, mb status = 0x%x\n", 1244 mb->mbxStatus); 1245 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1246 spin_lock_irq(shost->host_lock); 1247 vport->fc_flag &= ~(FC_FABRIC | FC_PUBLIC_LOOP); 1248 spin_unlock_irq(shost->host_lock); 1249 vport->fc_myDID = 0; 1250 goto out; 1251 } 1252 1253 vport->num_disc_nodes = 0; 1254 /* go thru NPR list and issue ELS PLOGIs */ 1255 if (vport->fc_npr_cnt) 1256 lpfc_els_disc_plogi(vport); 1257 1258 if (!vport->num_disc_nodes) { 1259 spin_lock_irq(shost->host_lock); 1260 vport->fc_flag &= ~FC_NDISC_ACTIVE; 1261 spin_unlock_irq(shost->host_lock); 1262 lpfc_can_disctmo(vport); 1263 } 1264 vport->port_state = LPFC_VPORT_READY; 1265 1266 out: 1267 mempool_free(pmb, phba->mbox_mem_pool); 1268 return; 1269 } 1270 1271 /* 1272 * This routine handles processing a Fabric REG_LOGIN mailbox 1273 * command upon completion. It is setup in the LPFC_MBOXQ 1274 * as the completion routine when the command is 1275 * handed off to the SLI layer. 1276 */ 1277 void 1278 lpfc_mbx_cmpl_fabric_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1279 { 1280 struct lpfc_vport *vport = pmb->vport; 1281 MAILBOX_t *mb = &pmb->mb; 1282 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1283 struct lpfc_nodelist *ndlp; 1284 struct lpfc_vport **vports; 1285 int i; 1286 1287 ndlp = (struct lpfc_nodelist *) pmb->context2; 1288 pmb->context1 = NULL; 1289 pmb->context2 = NULL; 1290 if (mb->mbxStatus) { 1291 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1292 kfree(mp); 1293 mempool_free(pmb, phba->mbox_mem_pool); 1294 lpfc_nlp_put(ndlp); 1295 1296 if (phba->fc_topology == TOPOLOGY_LOOP) { 1297 /* FLOGI failed, use loop map to make discovery list */ 1298 lpfc_disc_list_loopmap(vport); 1299 1300 /* Start discovery */ 1301 lpfc_disc_start(vport); 1302 return; 1303 } 1304 1305 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1306 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX, 1307 "0258 Register Fabric login error: 0x%x\n", 1308 mb->mbxStatus); 1309 return; 1310 } 1311 1312 ndlp->nlp_rpi = mb->un.varWords[0]; 1313 ndlp->nlp_type |= NLP_FABRIC; 1314 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1315 1316 lpfc_nlp_put(ndlp); /* Drop the reference from the mbox */ 1317 1318 if (vport->port_state == LPFC_FABRIC_CFG_LINK) { 1319 vports = lpfc_create_vport_work_array(phba); 1320 if (vports != NULL) 1321 for(i = 0; 1322 i < LPFC_MAX_VPORTS && vports[i] != NULL; 1323 i++) { 1324 if (vports[i]->port_type == LPFC_PHYSICAL_PORT) 1325 continue; 1326 if (phba->link_flag & LS_NPIV_FAB_SUPPORTED) 1327 lpfc_initial_fdisc(vports[i]); 1328 else if (phba->sli3_options & 1329 LPFC_SLI3_NPIV_ENABLED) { 1330 lpfc_vport_set_state(vports[i], 1331 FC_VPORT_NO_FABRIC_SUPP); 1332 lpfc_printf_vlog(vport, KERN_ERR, 1333 LOG_ELS, 1334 "0259 No NPIV " 1335 "Fabric support\n"); 1336 } 1337 } 1338 lpfc_destroy_vport_work_array(vports); 1339 lpfc_do_scr_ns_plogi(phba, vport); 1340 } 1341 1342 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1343 kfree(mp); 1344 mempool_free(pmb, phba->mbox_mem_pool); 1345 return; 1346 } 1347 1348 /* 1349 * This routine handles processing a NameServer REG_LOGIN mailbox 1350 * command upon completion. It is setup in the LPFC_MBOXQ 1351 * as the completion routine when the command is 1352 * handed off to the SLI layer. 1353 */ 1354 void 1355 lpfc_mbx_cmpl_ns_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 1356 { 1357 MAILBOX_t *mb = &pmb->mb; 1358 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 1359 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 1360 struct lpfc_vport *vport = pmb->vport; 1361 1362 if (mb->mbxStatus) { 1363 out: 1364 lpfc_nlp_put(ndlp); 1365 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1366 kfree(mp); 1367 mempool_free(pmb, phba->mbox_mem_pool); 1368 lpfc_drop_node(vport, ndlp); 1369 1370 if (phba->fc_topology == TOPOLOGY_LOOP) { 1371 /* 1372 * RegLogin failed, use loop map to make discovery 1373 * list 1374 */ 1375 lpfc_disc_list_loopmap(vport); 1376 1377 /* Start discovery */ 1378 lpfc_disc_start(vport); 1379 return; 1380 } 1381 lpfc_vport_set_state(vport, FC_VPORT_FAILED); 1382 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 1383 "0260 Register NameServer error: 0x%x\n", 1384 mb->mbxStatus); 1385 return; 1386 } 1387 1388 pmb->context1 = NULL; 1389 1390 ndlp->nlp_rpi = mb->un.varWords[0]; 1391 ndlp->nlp_type |= NLP_FABRIC; 1392 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1393 1394 if (vport->port_state < LPFC_VPORT_READY) { 1395 /* Link up discovery requires Fabric registration. */ 1396 lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */ 1397 lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0); 1398 lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0); 1399 lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0); 1400 lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0); 1401 1402 /* Issue SCR just before NameServer GID_FT Query */ 1403 lpfc_issue_els_scr(vport, SCR_DID, 0); 1404 } 1405 1406 vport->fc_ns_retry = 0; 1407 /* Good status, issue CT Request to NameServer */ 1408 if (lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 0, 0)) { 1409 /* Cannot issue NameServer Query, so finish up discovery */ 1410 goto out; 1411 } 1412 1413 lpfc_nlp_put(ndlp); 1414 lpfc_mbuf_free(phba, mp->virt, mp->phys); 1415 kfree(mp); 1416 mempool_free(pmb, phba->mbox_mem_pool); 1417 1418 return; 1419 } 1420 1421 static void 1422 lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1423 { 1424 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1425 struct fc_rport *rport; 1426 struct lpfc_rport_data *rdata; 1427 struct fc_rport_identifiers rport_ids; 1428 struct lpfc_hba *phba = vport->phba; 1429 1430 /* Remote port has reappeared. Re-register w/ FC transport */ 1431 rport_ids.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 1432 rport_ids.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 1433 rport_ids.port_id = ndlp->nlp_DID; 1434 rport_ids.roles = FC_RPORT_ROLE_UNKNOWN; 1435 1436 /* 1437 * We leave our node pointer in rport->dd_data when we unregister a 1438 * FCP target port. But fc_remote_port_add zeros the space to which 1439 * rport->dd_data points. So, if we're reusing a previously 1440 * registered port, drop the reference that we took the last time we 1441 * registered the port. 1442 */ 1443 if (ndlp->rport && ndlp->rport->dd_data && 1444 ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp) { 1445 lpfc_nlp_put(ndlp); 1446 } 1447 1448 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT, 1449 "rport add: did:x%x flg:x%x type x%x", 1450 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 1451 1452 ndlp->rport = rport = fc_remote_port_add(shost, 0, &rport_ids); 1453 if (!rport || !get_device(&rport->dev)) { 1454 dev_printk(KERN_WARNING, &phba->pcidev->dev, 1455 "Warning: fc_remote_port_add failed\n"); 1456 return; 1457 } 1458 1459 /* initialize static port data */ 1460 rport->maxframe_size = ndlp->nlp_maxframe; 1461 rport->supported_classes = ndlp->nlp_class_sup; 1462 rdata = rport->dd_data; 1463 rdata->pnode = lpfc_nlp_get(ndlp); 1464 1465 if (ndlp->nlp_type & NLP_FCP_TARGET) 1466 rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET; 1467 if (ndlp->nlp_type & NLP_FCP_INITIATOR) 1468 rport_ids.roles |= FC_RPORT_ROLE_FCP_INITIATOR; 1469 1470 1471 if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN) 1472 fc_remote_port_rolechg(rport, rport_ids.roles); 1473 1474 if ((rport->scsi_target_id != -1) && 1475 (rport->scsi_target_id < LPFC_MAX_TARGET)) { 1476 ndlp->nlp_sid = rport->scsi_target_id; 1477 } 1478 return; 1479 } 1480 1481 static void 1482 lpfc_unregister_remote_port(struct lpfc_nodelist *ndlp) 1483 { 1484 struct fc_rport *rport = ndlp->rport; 1485 1486 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_RPORT, 1487 "rport delete: did:x%x flg:x%x type x%x", 1488 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 1489 1490 fc_remote_port_delete(rport); 1491 1492 return; 1493 } 1494 1495 static void 1496 lpfc_nlp_counters(struct lpfc_vport *vport, int state, int count) 1497 { 1498 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1499 1500 spin_lock_irq(shost->host_lock); 1501 switch (state) { 1502 case NLP_STE_UNUSED_NODE: 1503 vport->fc_unused_cnt += count; 1504 break; 1505 case NLP_STE_PLOGI_ISSUE: 1506 vport->fc_plogi_cnt += count; 1507 break; 1508 case NLP_STE_ADISC_ISSUE: 1509 vport->fc_adisc_cnt += count; 1510 break; 1511 case NLP_STE_REG_LOGIN_ISSUE: 1512 vport->fc_reglogin_cnt += count; 1513 break; 1514 case NLP_STE_PRLI_ISSUE: 1515 vport->fc_prli_cnt += count; 1516 break; 1517 case NLP_STE_UNMAPPED_NODE: 1518 vport->fc_unmap_cnt += count; 1519 break; 1520 case NLP_STE_MAPPED_NODE: 1521 vport->fc_map_cnt += count; 1522 break; 1523 case NLP_STE_NPR_NODE: 1524 vport->fc_npr_cnt += count; 1525 break; 1526 } 1527 spin_unlock_irq(shost->host_lock); 1528 } 1529 1530 static void 1531 lpfc_nlp_state_cleanup(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1532 int old_state, int new_state) 1533 { 1534 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1535 1536 if (new_state == NLP_STE_UNMAPPED_NODE) { 1537 ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR); 1538 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 1539 ndlp->nlp_type |= NLP_FC_NODE; 1540 } 1541 if (new_state == NLP_STE_MAPPED_NODE) 1542 ndlp->nlp_flag &= ~NLP_NODEV_REMOVE; 1543 if (new_state == NLP_STE_NPR_NODE) 1544 ndlp->nlp_flag &= ~NLP_RCV_PLOGI; 1545 1546 /* Transport interface */ 1547 if (ndlp->rport && (old_state == NLP_STE_MAPPED_NODE || 1548 old_state == NLP_STE_UNMAPPED_NODE)) { 1549 vport->phba->nport_event_cnt++; 1550 lpfc_unregister_remote_port(ndlp); 1551 } 1552 1553 if (new_state == NLP_STE_MAPPED_NODE || 1554 new_state == NLP_STE_UNMAPPED_NODE) { 1555 vport->phba->nport_event_cnt++; 1556 /* 1557 * Tell the fc transport about the port, if we haven't 1558 * already. If we have, and it's a scsi entity, be 1559 * sure to unblock any attached scsi devices 1560 */ 1561 lpfc_register_remote_port(vport, ndlp); 1562 } 1563 /* 1564 * if we added to Mapped list, but the remote port 1565 * registration failed or assigned a target id outside 1566 * our presentable range - move the node to the 1567 * Unmapped List 1568 */ 1569 if (new_state == NLP_STE_MAPPED_NODE && 1570 (!ndlp->rport || 1571 ndlp->rport->scsi_target_id == -1 || 1572 ndlp->rport->scsi_target_id >= LPFC_MAX_TARGET)) { 1573 spin_lock_irq(shost->host_lock); 1574 ndlp->nlp_flag |= NLP_TGT_NO_SCSIID; 1575 spin_unlock_irq(shost->host_lock); 1576 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 1577 } 1578 } 1579 1580 static char * 1581 lpfc_nlp_state_name(char *buffer, size_t size, int state) 1582 { 1583 static char *states[] = { 1584 [NLP_STE_UNUSED_NODE] = "UNUSED", 1585 [NLP_STE_PLOGI_ISSUE] = "PLOGI", 1586 [NLP_STE_ADISC_ISSUE] = "ADISC", 1587 [NLP_STE_REG_LOGIN_ISSUE] = "REGLOGIN", 1588 [NLP_STE_PRLI_ISSUE] = "PRLI", 1589 [NLP_STE_UNMAPPED_NODE] = "UNMAPPED", 1590 [NLP_STE_MAPPED_NODE] = "MAPPED", 1591 [NLP_STE_NPR_NODE] = "NPR", 1592 }; 1593 1594 if (state < NLP_STE_MAX_STATE && states[state]) 1595 strlcpy(buffer, states[state], size); 1596 else 1597 snprintf(buffer, size, "unknown (%d)", state); 1598 return buffer; 1599 } 1600 1601 void 1602 lpfc_nlp_set_state(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 1603 int state) 1604 { 1605 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1606 int old_state = ndlp->nlp_state; 1607 char name1[16], name2[16]; 1608 1609 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1610 "0904 NPort state transition x%06x, %s -> %s\n", 1611 ndlp->nlp_DID, 1612 lpfc_nlp_state_name(name1, sizeof(name1), old_state), 1613 lpfc_nlp_state_name(name2, sizeof(name2), state)); 1614 1615 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 1616 "node statechg did:x%x old:%d ste:%d", 1617 ndlp->nlp_DID, old_state, state); 1618 1619 if (old_state == NLP_STE_NPR_NODE && 1620 (ndlp->nlp_flag & NLP_DELAY_TMO) != 0 && 1621 state != NLP_STE_NPR_NODE) 1622 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1623 if (old_state == NLP_STE_UNMAPPED_NODE) { 1624 ndlp->nlp_flag &= ~NLP_TGT_NO_SCSIID; 1625 ndlp->nlp_type &= ~NLP_FC_NODE; 1626 } 1627 1628 if (list_empty(&ndlp->nlp_listp)) { 1629 spin_lock_irq(shost->host_lock); 1630 list_add_tail(&ndlp->nlp_listp, &vport->fc_nodes); 1631 spin_unlock_irq(shost->host_lock); 1632 } else if (old_state) 1633 lpfc_nlp_counters(vport, old_state, -1); 1634 1635 ndlp->nlp_state = state; 1636 lpfc_nlp_counters(vport, state, 1); 1637 lpfc_nlp_state_cleanup(vport, ndlp, old_state, state); 1638 } 1639 1640 void 1641 lpfc_dequeue_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1642 { 1643 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1644 1645 if ((ndlp->nlp_flag & NLP_DELAY_TMO) != 0) 1646 lpfc_cancel_retry_delay_tmo(vport, ndlp); 1647 if (ndlp->nlp_state && !list_empty(&ndlp->nlp_listp)) 1648 lpfc_nlp_counters(vport, ndlp->nlp_state, -1); 1649 spin_lock_irq(shost->host_lock); 1650 list_del_init(&ndlp->nlp_listp); 1651 spin_unlock_irq(shost->host_lock); 1652 lpfc_nlp_state_cleanup(vport, ndlp, ndlp->nlp_state, 1653 NLP_STE_UNUSED_NODE); 1654 } 1655 1656 void 1657 lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1658 { 1659 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNUSED_NODE); 1660 lpfc_nlp_put(ndlp); 1661 } 1662 1663 /* 1664 * Start / ReStart rescue timer for Discovery / RSCN handling 1665 */ 1666 void 1667 lpfc_set_disctmo(struct lpfc_vport *vport) 1668 { 1669 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1670 struct lpfc_hba *phba = vport->phba; 1671 uint32_t tmo; 1672 1673 if (vport->port_state == LPFC_LOCAL_CFG_LINK) { 1674 /* For FAN, timeout should be greater then edtov */ 1675 tmo = (((phba->fc_edtov + 999) / 1000) + 1); 1676 } else { 1677 /* Normal discovery timeout should be > then ELS/CT timeout 1678 * FC spec states we need 3 * ratov for CT requests 1679 */ 1680 tmo = ((phba->fc_ratov * 3) + 3); 1681 } 1682 1683 1684 if (!timer_pending(&vport->fc_disctmo)) { 1685 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1686 "set disc timer: tmo:x%x state:x%x flg:x%x", 1687 tmo, vport->port_state, vport->fc_flag); 1688 } 1689 1690 mod_timer(&vport->fc_disctmo, jiffies + HZ * tmo); 1691 spin_lock_irq(shost->host_lock); 1692 vport->fc_flag |= FC_DISC_TMO; 1693 spin_unlock_irq(shost->host_lock); 1694 1695 /* Start Discovery Timer state <hba_state> */ 1696 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1697 "0247 Start Discovery Timer state x%x " 1698 "Data: x%x x%lx x%x x%x\n", 1699 vport->port_state, tmo, 1700 (unsigned long)&vport->fc_disctmo, vport->fc_plogi_cnt, 1701 vport->fc_adisc_cnt); 1702 1703 return; 1704 } 1705 1706 /* 1707 * Cancel rescue timer for Discovery / RSCN handling 1708 */ 1709 int 1710 lpfc_can_disctmo(struct lpfc_vport *vport) 1711 { 1712 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1713 unsigned long iflags; 1714 1715 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 1716 "can disc timer: state:x%x rtry:x%x flg:x%x", 1717 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 1718 1719 /* Turn off discovery timer if its running */ 1720 if (vport->fc_flag & FC_DISC_TMO) { 1721 spin_lock_irqsave(shost->host_lock, iflags); 1722 vport->fc_flag &= ~FC_DISC_TMO; 1723 spin_unlock_irqrestore(shost->host_lock, iflags); 1724 del_timer_sync(&vport->fc_disctmo); 1725 spin_lock_irqsave(&vport->work_port_lock, iflags); 1726 vport->work_port_events &= ~WORKER_DISC_TMO; 1727 spin_unlock_irqrestore(&vport->work_port_lock, iflags); 1728 } 1729 1730 /* Cancel Discovery Timer state <hba_state> */ 1731 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 1732 "0248 Cancel Discovery Timer state x%x " 1733 "Data: x%x x%x x%x\n", 1734 vport->port_state, vport->fc_flag, 1735 vport->fc_plogi_cnt, vport->fc_adisc_cnt); 1736 return 0; 1737 } 1738 1739 /* 1740 * Check specified ring for outstanding IOCB on the SLI queue 1741 * Return true if iocb matches the specified nport 1742 */ 1743 int 1744 lpfc_check_sli_ndlp(struct lpfc_hba *phba, 1745 struct lpfc_sli_ring *pring, 1746 struct lpfc_iocbq *iocb, 1747 struct lpfc_nodelist *ndlp) 1748 { 1749 struct lpfc_sli *psli = &phba->sli; 1750 IOCB_t *icmd = &iocb->iocb; 1751 struct lpfc_vport *vport = ndlp->vport; 1752 1753 if (iocb->vport != vport) 1754 return 0; 1755 1756 if (pring->ringno == LPFC_ELS_RING) { 1757 switch (icmd->ulpCommand) { 1758 case CMD_GEN_REQUEST64_CR: 1759 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) 1760 return 1; 1761 case CMD_ELS_REQUEST64_CR: 1762 if (icmd->un.elsreq64.remoteID == ndlp->nlp_DID) 1763 return 1; 1764 case CMD_XMIT_ELS_RSP64_CX: 1765 if (iocb->context1 == (uint8_t *) ndlp) 1766 return 1; 1767 } 1768 } else if (pring->ringno == psli->extra_ring) { 1769 1770 } else if (pring->ringno == psli->fcp_ring) { 1771 /* Skip match check if waiting to relogin to FCP target */ 1772 if ((ndlp->nlp_type & NLP_FCP_TARGET) && 1773 (ndlp->nlp_flag & NLP_DELAY_TMO)) { 1774 return 0; 1775 } 1776 if (icmd->ulpContext == (volatile ushort)ndlp->nlp_rpi) { 1777 return 1; 1778 } 1779 } else if (pring->ringno == psli->next_ring) { 1780 1781 } 1782 return 0; 1783 } 1784 1785 /* 1786 * Free resources / clean up outstanding I/Os 1787 * associated with nlp_rpi in the LPFC_NODELIST entry. 1788 */ 1789 static int 1790 lpfc_no_rpi(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 1791 { 1792 LIST_HEAD(completions); 1793 struct lpfc_sli *psli; 1794 struct lpfc_sli_ring *pring; 1795 struct lpfc_iocbq *iocb, *next_iocb; 1796 IOCB_t *icmd; 1797 uint32_t rpi, i; 1798 1799 lpfc_fabric_abort_nport(ndlp); 1800 1801 /* 1802 * Everything that matches on txcmplq will be returned 1803 * by firmware with a no rpi error. 1804 */ 1805 psli = &phba->sli; 1806 rpi = ndlp->nlp_rpi; 1807 if (rpi) { 1808 /* Now process each ring */ 1809 for (i = 0; i < psli->num_rings; i++) { 1810 pring = &psli->ring[i]; 1811 1812 spin_lock_irq(&phba->hbalock); 1813 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, 1814 list) { 1815 /* 1816 * Check to see if iocb matches the nport we are 1817 * looking for 1818 */ 1819 if ((lpfc_check_sli_ndlp(phba, pring, iocb, 1820 ndlp))) { 1821 /* It matches, so deque and call compl 1822 with an error */ 1823 list_move_tail(&iocb->list, 1824 &completions); 1825 pring->txq_cnt--; 1826 } 1827 } 1828 spin_unlock_irq(&phba->hbalock); 1829 } 1830 } 1831 1832 while (!list_empty(&completions)) { 1833 iocb = list_get_first(&completions, struct lpfc_iocbq, list); 1834 list_del_init(&iocb->list); 1835 1836 if (!iocb->iocb_cmpl) 1837 lpfc_sli_release_iocbq(phba, iocb); 1838 else { 1839 icmd = &iocb->iocb; 1840 icmd->ulpStatus = IOSTAT_LOCAL_REJECT; 1841 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 1842 (iocb->iocb_cmpl)(phba, iocb, iocb); 1843 } 1844 } 1845 1846 return 0; 1847 } 1848 1849 /* 1850 * Free rpi associated with LPFC_NODELIST entry. 1851 * This routine is called from lpfc_freenode(), when we are removing 1852 * a LPFC_NODELIST entry. It is also called if the driver initiates a 1853 * LOGO that completes successfully, and we are waiting to PLOGI back 1854 * to the remote NPort. In addition, it is called after we receive 1855 * and unsolicated ELS cmd, send back a rsp, the rsp completes and 1856 * we are waiting to PLOGI back to the remote NPort. 1857 */ 1858 int 1859 lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1860 { 1861 struct lpfc_hba *phba = vport->phba; 1862 LPFC_MBOXQ_t *mbox; 1863 int rc; 1864 1865 if (ndlp->nlp_rpi) { 1866 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1867 if (mbox) { 1868 lpfc_unreg_login(phba, vport->vpi, ndlp->nlp_rpi, mbox); 1869 mbox->vport = vport; 1870 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1871 rc = lpfc_sli_issue_mbox(phba, mbox, 1872 (MBX_NOWAIT | MBX_STOP_IOCB)); 1873 if (rc == MBX_NOT_FINISHED) 1874 mempool_free(mbox, phba->mbox_mem_pool); 1875 } 1876 lpfc_no_rpi(phba, ndlp); 1877 ndlp->nlp_rpi = 0; 1878 return 1; 1879 } 1880 return 0; 1881 } 1882 1883 void 1884 lpfc_unreg_all_rpis(struct lpfc_vport *vport) 1885 { 1886 struct lpfc_hba *phba = vport->phba; 1887 LPFC_MBOXQ_t *mbox; 1888 int rc; 1889 1890 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1891 if (mbox) { 1892 lpfc_unreg_login(phba, vport->vpi, 0xffff, mbox); 1893 mbox->vport = vport; 1894 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1895 rc = lpfc_sli_issue_mbox(phba, mbox, 1896 (MBX_NOWAIT | MBX_STOP_IOCB)); 1897 if (rc == MBX_NOT_FINISHED) { 1898 mempool_free(mbox, phba->mbox_mem_pool); 1899 } 1900 } 1901 } 1902 1903 void 1904 lpfc_unreg_default_rpis(struct lpfc_vport *vport) 1905 { 1906 struct lpfc_hba *phba = vport->phba; 1907 LPFC_MBOXQ_t *mbox; 1908 int rc; 1909 1910 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1911 if (mbox) { 1912 lpfc_unreg_did(phba, vport->vpi, 0xffffffff, mbox); 1913 mbox->vport = vport; 1914 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1915 rc = lpfc_sli_issue_mbox(phba, mbox, 1916 (MBX_NOWAIT | MBX_STOP_IOCB)); 1917 if (rc == MBX_NOT_FINISHED) { 1918 lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX | LOG_VPORT, 1919 "1815 Could not issue " 1920 "unreg_did (default rpis)\n"); 1921 mempool_free(mbox, phba->mbox_mem_pool); 1922 } 1923 } 1924 } 1925 1926 /* 1927 * Free resources associated with LPFC_NODELIST entry 1928 * so it can be freed. 1929 */ 1930 static int 1931 lpfc_cleanup_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 1932 { 1933 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 1934 struct lpfc_hba *phba = vport->phba; 1935 LPFC_MBOXQ_t *mb, *nextmb; 1936 struct lpfc_dmabuf *mp; 1937 1938 /* Cleanup node for NPort <nlp_DID> */ 1939 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 1940 "0900 Cleanup node for NPort x%x " 1941 "Data: x%x x%x x%x\n", 1942 ndlp->nlp_DID, ndlp->nlp_flag, 1943 ndlp->nlp_state, ndlp->nlp_rpi); 1944 lpfc_dequeue_node(vport, ndlp); 1945 1946 /* cleanup any ndlp on mbox q waiting for reglogin cmpl */ 1947 if ((mb = phba->sli.mbox_active)) { 1948 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && 1949 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1950 mb->context2 = NULL; 1951 mb->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 1952 } 1953 } 1954 1955 spin_lock_irq(&phba->hbalock); 1956 list_for_each_entry_safe(mb, nextmb, &phba->sli.mboxq, list) { 1957 if ((mb->mb.mbxCommand == MBX_REG_LOGIN64) && 1958 (ndlp == (struct lpfc_nodelist *) mb->context2)) { 1959 mp = (struct lpfc_dmabuf *) (mb->context1); 1960 if (mp) { 1961 __lpfc_mbuf_free(phba, mp->virt, mp->phys); 1962 kfree(mp); 1963 } 1964 list_del(&mb->list); 1965 mempool_free(mb, phba->mbox_mem_pool); 1966 lpfc_nlp_put(ndlp); 1967 } 1968 } 1969 spin_unlock_irq(&phba->hbalock); 1970 1971 lpfc_els_abort(phba,ndlp); 1972 spin_lock_irq(shost->host_lock); 1973 ndlp->nlp_flag &= ~NLP_DELAY_TMO; 1974 spin_unlock_irq(shost->host_lock); 1975 1976 ndlp->nlp_last_elscmd = 0; 1977 del_timer_sync(&ndlp->nlp_delayfunc); 1978 1979 if (!list_empty(&ndlp->els_retry_evt.evt_listp)) 1980 list_del_init(&ndlp->els_retry_evt.evt_listp); 1981 if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) 1982 list_del_init(&ndlp->dev_loss_evt.evt_listp); 1983 1984 if (!list_empty(&ndlp->dev_loss_evt.evt_listp)) { 1985 list_del_init(&ndlp->dev_loss_evt.evt_listp); 1986 complete((struct completion *)(ndlp->dev_loss_evt.evt_arg2)); 1987 } 1988 1989 lpfc_unreg_rpi(vport, ndlp); 1990 1991 return 0; 1992 } 1993 1994 /* 1995 * Check to see if we can free the nlp back to the freelist. 1996 * If we are in the middle of using the nlp in the discovery state 1997 * machine, defer the free till we reach the end of the state machine. 1998 */ 1999 static void 2000 lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2001 { 2002 struct lpfc_rport_data *rdata; 2003 2004 if (ndlp->nlp_flag & NLP_DELAY_TMO) { 2005 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2006 } 2007 2008 lpfc_cleanup_node(vport, ndlp); 2009 2010 /* 2011 * We can get here with a non-NULL ndlp->rport because when we 2012 * unregister a rport we don't break the rport/node linkage. So if we 2013 * do, make sure we don't leaving any dangling pointers behind. 2014 */ 2015 if (ndlp->rport) { 2016 rdata = ndlp->rport->dd_data; 2017 rdata->pnode = NULL; 2018 ndlp->rport = NULL; 2019 } 2020 } 2021 2022 static int 2023 lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2024 uint32_t did) 2025 { 2026 D_ID mydid, ndlpdid, matchdid; 2027 2028 if (did == Bcast_DID) 2029 return 0; 2030 2031 if (ndlp->nlp_DID == 0) { 2032 return 0; 2033 } 2034 2035 /* First check for Direct match */ 2036 if (ndlp->nlp_DID == did) 2037 return 1; 2038 2039 /* Next check for area/domain identically equals 0 match */ 2040 mydid.un.word = vport->fc_myDID; 2041 if ((mydid.un.b.domain == 0) && (mydid.un.b.area == 0)) { 2042 return 0; 2043 } 2044 2045 matchdid.un.word = did; 2046 ndlpdid.un.word = ndlp->nlp_DID; 2047 if (matchdid.un.b.id == ndlpdid.un.b.id) { 2048 if ((mydid.un.b.domain == matchdid.un.b.domain) && 2049 (mydid.un.b.area == matchdid.un.b.area)) { 2050 if ((ndlpdid.un.b.domain == 0) && 2051 (ndlpdid.un.b.area == 0)) { 2052 if (ndlpdid.un.b.id) 2053 return 1; 2054 } 2055 return 0; 2056 } 2057 2058 matchdid.un.word = ndlp->nlp_DID; 2059 if ((mydid.un.b.domain == ndlpdid.un.b.domain) && 2060 (mydid.un.b.area == ndlpdid.un.b.area)) { 2061 if ((matchdid.un.b.domain == 0) && 2062 (matchdid.un.b.area == 0)) { 2063 if (matchdid.un.b.id) 2064 return 1; 2065 } 2066 } 2067 } 2068 return 0; 2069 } 2070 2071 /* Search for a nodelist entry */ 2072 static struct lpfc_nodelist * 2073 __lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 2074 { 2075 struct lpfc_nodelist *ndlp; 2076 uint32_t data1; 2077 2078 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 2079 if (lpfc_matchdid(vport, ndlp, did)) { 2080 data1 = (((uint32_t) ndlp->nlp_state << 24) | 2081 ((uint32_t) ndlp->nlp_xri << 16) | 2082 ((uint32_t) ndlp->nlp_type << 8) | 2083 ((uint32_t) ndlp->nlp_rpi & 0xff)); 2084 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2085 "0929 FIND node DID " 2086 "Data: x%p x%x x%x x%x\n", 2087 ndlp, ndlp->nlp_DID, 2088 ndlp->nlp_flag, data1); 2089 return ndlp; 2090 } 2091 } 2092 2093 /* FIND node did <did> NOT FOUND */ 2094 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE, 2095 "0932 FIND node did x%x NOT FOUND.\n", did); 2096 return NULL; 2097 } 2098 2099 struct lpfc_nodelist * 2100 lpfc_findnode_did(struct lpfc_vport *vport, uint32_t did) 2101 { 2102 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2103 struct lpfc_nodelist *ndlp; 2104 2105 spin_lock_irq(shost->host_lock); 2106 ndlp = __lpfc_findnode_did(vport, did); 2107 spin_unlock_irq(shost->host_lock); 2108 return ndlp; 2109 } 2110 2111 struct lpfc_nodelist * 2112 lpfc_setup_disc_node(struct lpfc_vport *vport, uint32_t did) 2113 { 2114 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2115 struct lpfc_nodelist *ndlp; 2116 2117 ndlp = lpfc_findnode_did(vport, did); 2118 if (!ndlp) { 2119 if ((vport->fc_flag & FC_RSCN_MODE) != 0 && 2120 lpfc_rscn_payload_check(vport, did) == 0) 2121 return NULL; 2122 ndlp = (struct lpfc_nodelist *) 2123 mempool_alloc(vport->phba->nlp_mem_pool, GFP_KERNEL); 2124 if (!ndlp) 2125 return NULL; 2126 lpfc_nlp_init(vport, ndlp, did); 2127 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2128 spin_lock_irq(shost->host_lock); 2129 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2130 spin_unlock_irq(shost->host_lock); 2131 return ndlp; 2132 } 2133 if (vport->fc_flag & FC_RSCN_MODE) { 2134 if (lpfc_rscn_payload_check(vport, did)) { 2135 spin_lock_irq(shost->host_lock); 2136 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2137 spin_unlock_irq(shost->host_lock); 2138 2139 /* Since this node is marked for discovery, 2140 * delay timeout is not needed. 2141 */ 2142 if (ndlp->nlp_flag & NLP_DELAY_TMO) 2143 lpfc_cancel_retry_delay_tmo(vport, ndlp); 2144 } else 2145 ndlp = NULL; 2146 } else { 2147 if (ndlp->nlp_state == NLP_STE_ADISC_ISSUE || 2148 ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) 2149 return NULL; 2150 lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE); 2151 spin_lock_irq(shost->host_lock); 2152 ndlp->nlp_flag |= NLP_NPR_2B_DISC; 2153 spin_unlock_irq(shost->host_lock); 2154 } 2155 return ndlp; 2156 } 2157 2158 /* Build a list of nodes to discover based on the loopmap */ 2159 void 2160 lpfc_disc_list_loopmap(struct lpfc_vport *vport) 2161 { 2162 struct lpfc_hba *phba = vport->phba; 2163 int j; 2164 uint32_t alpa, index; 2165 2166 if (!lpfc_is_link_up(phba)) 2167 return; 2168 2169 if (phba->fc_topology != TOPOLOGY_LOOP) 2170 return; 2171 2172 /* Check for loop map present or not */ 2173 if (phba->alpa_map[0]) { 2174 for (j = 1; j <= phba->alpa_map[0]; j++) { 2175 alpa = phba->alpa_map[j]; 2176 if (((vport->fc_myDID & 0xff) == alpa) || (alpa == 0)) 2177 continue; 2178 lpfc_setup_disc_node(vport, alpa); 2179 } 2180 } else { 2181 /* No alpamap, so try all alpa's */ 2182 for (j = 0; j < FC_MAXLOOP; j++) { 2183 /* If cfg_scan_down is set, start from highest 2184 * ALPA (0xef) to lowest (0x1). 2185 */ 2186 if (vport->cfg_scan_down) 2187 index = j; 2188 else 2189 index = FC_MAXLOOP - j - 1; 2190 alpa = lpfcAlpaArray[index]; 2191 if ((vport->fc_myDID & 0xff) == alpa) 2192 continue; 2193 lpfc_setup_disc_node(vport, alpa); 2194 } 2195 } 2196 return; 2197 } 2198 2199 void 2200 lpfc_issue_clear_la(struct lpfc_hba *phba, struct lpfc_vport *vport) 2201 { 2202 LPFC_MBOXQ_t *mbox; 2203 struct lpfc_sli *psli = &phba->sli; 2204 struct lpfc_sli_ring *extra_ring = &psli->ring[psli->extra_ring]; 2205 struct lpfc_sli_ring *fcp_ring = &psli->ring[psli->fcp_ring]; 2206 struct lpfc_sli_ring *next_ring = &psli->ring[psli->next_ring]; 2207 int rc; 2208 2209 /* 2210 * if it's not a physical port or if we already send 2211 * clear_la then don't send it. 2212 */ 2213 if ((phba->link_state >= LPFC_CLEAR_LA) || 2214 (vport->port_type != LPFC_PHYSICAL_PORT)) 2215 return; 2216 2217 /* Link up discovery */ 2218 if ((mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL)) != NULL) { 2219 phba->link_state = LPFC_CLEAR_LA; 2220 lpfc_clear_la(phba, mbox); 2221 mbox->mbox_cmpl = lpfc_mbx_cmpl_clear_la; 2222 mbox->vport = vport; 2223 rc = lpfc_sli_issue_mbox(phba, mbox, (MBX_NOWAIT | 2224 MBX_STOP_IOCB)); 2225 if (rc == MBX_NOT_FINISHED) { 2226 mempool_free(mbox, phba->mbox_mem_pool); 2227 lpfc_disc_flush_list(vport); 2228 extra_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2229 fcp_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2230 next_ring->flag &= ~LPFC_STOP_IOCB_EVENT; 2231 phba->link_state = LPFC_HBA_ERROR; 2232 } 2233 } 2234 } 2235 2236 /* Reg_vpi to tell firmware to resume normal operations */ 2237 void 2238 lpfc_issue_reg_vpi(struct lpfc_hba *phba, struct lpfc_vport *vport) 2239 { 2240 LPFC_MBOXQ_t *regvpimbox; 2241 2242 regvpimbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2243 if (regvpimbox) { 2244 lpfc_reg_vpi(phba, vport->vpi, vport->fc_myDID, regvpimbox); 2245 regvpimbox->mbox_cmpl = lpfc_mbx_cmpl_reg_vpi; 2246 regvpimbox->vport = vport; 2247 if (lpfc_sli_issue_mbox(phba, regvpimbox, 2248 (MBX_NOWAIT | MBX_STOP_IOCB)) 2249 == MBX_NOT_FINISHED) { 2250 mempool_free(regvpimbox, phba->mbox_mem_pool); 2251 } 2252 } 2253 } 2254 2255 /* Start Link up / RSCN discovery on NPR nodes */ 2256 void 2257 lpfc_disc_start(struct lpfc_vport *vport) 2258 { 2259 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2260 struct lpfc_hba *phba = vport->phba; 2261 uint32_t num_sent; 2262 uint32_t clear_la_pending; 2263 int did_changed; 2264 2265 if (!lpfc_is_link_up(phba)) 2266 return; 2267 2268 if (phba->link_state == LPFC_CLEAR_LA) 2269 clear_la_pending = 1; 2270 else 2271 clear_la_pending = 0; 2272 2273 if (vport->port_state < LPFC_VPORT_READY) 2274 vport->port_state = LPFC_DISC_AUTH; 2275 2276 lpfc_set_disctmo(vport); 2277 2278 if (vport->fc_prevDID == vport->fc_myDID) 2279 did_changed = 0; 2280 else 2281 did_changed = 1; 2282 2283 vport->fc_prevDID = vport->fc_myDID; 2284 vport->num_disc_nodes = 0; 2285 2286 /* Start Discovery state <hba_state> */ 2287 lpfc_printf_vlog(vport, KERN_INFO, LOG_DISCOVERY, 2288 "0202 Start Discovery hba state x%x " 2289 "Data: x%x x%x x%x\n", 2290 vport->port_state, vport->fc_flag, vport->fc_plogi_cnt, 2291 vport->fc_adisc_cnt); 2292 2293 /* First do ADISCs - if any */ 2294 num_sent = lpfc_els_disc_adisc(vport); 2295 2296 if (num_sent) 2297 return; 2298 2299 /* 2300 * For SLI3, cmpl_reg_vpi will set port_state to READY, and 2301 * continue discovery. 2302 */ 2303 if ((phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) && 2304 !(vport->fc_flag & FC_RSCN_MODE)) { 2305 lpfc_issue_reg_vpi(phba, vport); 2306 return; 2307 } 2308 2309 /* 2310 * For SLI2, we need to set port_state to READY and continue 2311 * discovery. 2312 */ 2313 if (vport->port_state < LPFC_VPORT_READY && !clear_la_pending) { 2314 /* If we get here, there is nothing to ADISC */ 2315 if (vport->port_type == LPFC_PHYSICAL_PORT) 2316 lpfc_issue_clear_la(phba, vport); 2317 2318 if (!(vport->fc_flag & FC_ABORT_DISCOVERY)) { 2319 vport->num_disc_nodes = 0; 2320 /* go thru NPR nodes and issue ELS PLOGIs */ 2321 if (vport->fc_npr_cnt) 2322 lpfc_els_disc_plogi(vport); 2323 2324 if (!vport->num_disc_nodes) { 2325 spin_lock_irq(shost->host_lock); 2326 vport->fc_flag &= ~FC_NDISC_ACTIVE; 2327 spin_unlock_irq(shost->host_lock); 2328 lpfc_can_disctmo(vport); 2329 } 2330 } 2331 vport->port_state = LPFC_VPORT_READY; 2332 } else { 2333 /* Next do PLOGIs - if any */ 2334 num_sent = lpfc_els_disc_plogi(vport); 2335 2336 if (num_sent) 2337 return; 2338 2339 if (vport->fc_flag & FC_RSCN_MODE) { 2340 /* Check to see if more RSCNs came in while we 2341 * were processing this one. 2342 */ 2343 if ((vport->fc_rscn_id_cnt == 0) && 2344 (!(vport->fc_flag & FC_RSCN_DISCOVERY))) { 2345 spin_lock_irq(shost->host_lock); 2346 vport->fc_flag &= ~FC_RSCN_MODE; 2347 spin_unlock_irq(shost->host_lock); 2348 lpfc_can_disctmo(vport); 2349 } else 2350 lpfc_els_handle_rscn(vport); 2351 } 2352 } 2353 return; 2354 } 2355 2356 /* 2357 * Ignore completion for all IOCBs on tx and txcmpl queue for ELS 2358 * ring the match the sppecified nodelist. 2359 */ 2360 static void 2361 lpfc_free_tx(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) 2362 { 2363 LIST_HEAD(completions); 2364 struct lpfc_sli *psli; 2365 IOCB_t *icmd; 2366 struct lpfc_iocbq *iocb, *next_iocb; 2367 struct lpfc_sli_ring *pring; 2368 2369 psli = &phba->sli; 2370 pring = &psli->ring[LPFC_ELS_RING]; 2371 2372 /* Error matching iocb on txq or txcmplq 2373 * First check the txq. 2374 */ 2375 spin_lock_irq(&phba->hbalock); 2376 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) { 2377 if (iocb->context1 != ndlp) { 2378 continue; 2379 } 2380 icmd = &iocb->iocb; 2381 if ((icmd->ulpCommand == CMD_ELS_REQUEST64_CR) || 2382 (icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX)) { 2383 2384 list_move_tail(&iocb->list, &completions); 2385 pring->txq_cnt--; 2386 } 2387 } 2388 2389 /* Next check the txcmplq */ 2390 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) { 2391 if (iocb->context1 != ndlp) { 2392 continue; 2393 } 2394 icmd = &iocb->iocb; 2395 if (icmd->ulpCommand == CMD_ELS_REQUEST64_CR || 2396 icmd->ulpCommand == CMD_XMIT_ELS_RSP64_CX) { 2397 lpfc_sli_issue_abort_iotag(phba, pring, iocb); 2398 } 2399 } 2400 spin_unlock_irq(&phba->hbalock); 2401 2402 while (!list_empty(&completions)) { 2403 iocb = list_get_first(&completions, struct lpfc_iocbq, list); 2404 list_del_init(&iocb->list); 2405 2406 if (!iocb->iocb_cmpl) 2407 lpfc_sli_release_iocbq(phba, iocb); 2408 else { 2409 icmd = &iocb->iocb; 2410 icmd->ulpStatus = IOSTAT_LOCAL_REJECT; 2411 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED; 2412 (iocb->iocb_cmpl) (phba, iocb, iocb); 2413 } 2414 } 2415 } 2416 2417 void 2418 lpfc_disc_flush_list(struct lpfc_vport *vport) 2419 { 2420 struct lpfc_nodelist *ndlp, *next_ndlp; 2421 struct lpfc_hba *phba = vport->phba; 2422 2423 if (vport->fc_plogi_cnt || vport->fc_adisc_cnt) { 2424 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 2425 nlp_listp) { 2426 if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE || 2427 ndlp->nlp_state == NLP_STE_ADISC_ISSUE) { 2428 lpfc_free_tx(phba, ndlp); 2429 lpfc_nlp_put(ndlp); 2430 } 2431 } 2432 } 2433 } 2434 2435 void 2436 lpfc_cleanup_discovery_resources(struct lpfc_vport *vport) 2437 { 2438 lpfc_els_flush_rscn(vport); 2439 lpfc_els_flush_cmd(vport); 2440 lpfc_disc_flush_list(vport); 2441 } 2442 2443 /*****************************************************************************/ 2444 /* 2445 * NAME: lpfc_disc_timeout 2446 * 2447 * FUNCTION: Fibre Channel driver discovery timeout routine. 2448 * 2449 * EXECUTION ENVIRONMENT: interrupt only 2450 * 2451 * CALLED FROM: 2452 * Timer function 2453 * 2454 * RETURNS: 2455 * none 2456 */ 2457 /*****************************************************************************/ 2458 void 2459 lpfc_disc_timeout(unsigned long ptr) 2460 { 2461 struct lpfc_vport *vport = (struct lpfc_vport *) ptr; 2462 struct lpfc_hba *phba = vport->phba; 2463 unsigned long flags = 0; 2464 2465 if (unlikely(!phba)) 2466 return; 2467 2468 if ((vport->work_port_events & WORKER_DISC_TMO) == 0) { 2469 spin_lock_irqsave(&vport->work_port_lock, flags); 2470 vport->work_port_events |= WORKER_DISC_TMO; 2471 spin_unlock_irqrestore(&vport->work_port_lock, flags); 2472 2473 spin_lock_irqsave(&phba->hbalock, flags); 2474 if (phba->work_wait) 2475 lpfc_worker_wake_up(phba); 2476 spin_unlock_irqrestore(&phba->hbalock, flags); 2477 } 2478 return; 2479 } 2480 2481 static void 2482 lpfc_disc_timeout_handler(struct lpfc_vport *vport) 2483 { 2484 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2485 struct lpfc_hba *phba = vport->phba; 2486 struct lpfc_sli *psli = &phba->sli; 2487 struct lpfc_nodelist *ndlp, *next_ndlp; 2488 LPFC_MBOXQ_t *initlinkmbox; 2489 int rc, clrlaerr = 0; 2490 2491 if (!(vport->fc_flag & FC_DISC_TMO)) 2492 return; 2493 2494 spin_lock_irq(shost->host_lock); 2495 vport->fc_flag &= ~FC_DISC_TMO; 2496 spin_unlock_irq(shost->host_lock); 2497 2498 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_ELS_CMD, 2499 "disc timeout: state:x%x rtry:x%x flg:x%x", 2500 vport->port_state, vport->fc_ns_retry, vport->fc_flag); 2501 2502 switch (vport->port_state) { 2503 2504 case LPFC_LOCAL_CFG_LINK: 2505 /* port_state is identically LPFC_LOCAL_CFG_LINK while waiting for 2506 * FAN 2507 */ 2508 /* FAN timeout */ 2509 lpfc_printf_vlog(vport, KERN_WARNING, LOG_DISCOVERY, 2510 "0221 FAN timeout\n"); 2511 /* Start discovery by sending FLOGI, clean up old rpis */ 2512 list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, 2513 nlp_listp) { 2514 if (ndlp->nlp_state != NLP_STE_NPR_NODE) 2515 continue; 2516 if (ndlp->nlp_type & NLP_FABRIC) { 2517 /* Clean up the ndlp on Fabric connections */ 2518 lpfc_drop_node(vport, ndlp); 2519 } else if (!(ndlp->nlp_flag & NLP_NPR_ADISC)) { 2520 /* Fail outstanding IO now since device 2521 * is marked for PLOGI. 2522 */ 2523 lpfc_unreg_rpi(vport, ndlp); 2524 } 2525 } 2526 if (vport->port_state != LPFC_FLOGI) { 2527 vport->port_state = LPFC_FLOGI; 2528 lpfc_set_disctmo(vport); 2529 lpfc_initial_flogi(vport); 2530 } 2531 break; 2532 2533 case LPFC_FDISC: 2534 case LPFC_FLOGI: 2535 /* port_state is identically LPFC_FLOGI while waiting for FLOGI cmpl */ 2536 /* Initial FLOGI timeout */ 2537 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2538 "0222 Initial %s timeout\n", 2539 vport->vpi ? "FLOGI" : "FDISC"); 2540 2541 /* Assume no Fabric and go on with discovery. 2542 * Check for outstanding ELS FLOGI to abort. 2543 */ 2544 2545 /* FLOGI failed, so just use loop map to make discovery list */ 2546 lpfc_disc_list_loopmap(vport); 2547 2548 /* Start discovery */ 2549 lpfc_disc_start(vport); 2550 break; 2551 2552 case LPFC_FABRIC_CFG_LINK: 2553 /* hba_state is identically LPFC_FABRIC_CFG_LINK while waiting for 2554 NameServer login */ 2555 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2556 "0223 Timeout while waiting for " 2557 "NameServer login\n"); 2558 /* Next look for NameServer ndlp */ 2559 ndlp = lpfc_findnode_did(vport, NameServer_DID); 2560 if (ndlp) 2561 lpfc_nlp_put(ndlp); 2562 /* Start discovery */ 2563 lpfc_disc_start(vport); 2564 break; 2565 2566 case LPFC_NS_QRY: 2567 /* Check for wait for NameServer Rsp timeout */ 2568 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2569 "0224 NameServer Query timeout " 2570 "Data: x%x x%x\n", 2571 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 2572 2573 if (vport->fc_ns_retry < LPFC_MAX_NS_RETRY) { 2574 /* Try it one more time */ 2575 vport->fc_ns_retry++; 2576 rc = lpfc_ns_cmd(vport, SLI_CTNS_GID_FT, 2577 vport->fc_ns_retry, 0); 2578 if (rc == 0) 2579 break; 2580 } 2581 vport->fc_ns_retry = 0; 2582 2583 /* 2584 * Discovery is over. 2585 * set port_state to PORT_READY if SLI2. 2586 * cmpl_reg_vpi will set port_state to READY for SLI3. 2587 */ 2588 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 2589 lpfc_issue_reg_vpi(phba, vport); 2590 else { /* NPIV Not enabled */ 2591 lpfc_issue_clear_la(phba, vport); 2592 vport->port_state = LPFC_VPORT_READY; 2593 } 2594 2595 /* Setup and issue mailbox INITIALIZE LINK command */ 2596 initlinkmbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 2597 if (!initlinkmbox) { 2598 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2599 "0206 Device Discovery " 2600 "completion error\n"); 2601 phba->link_state = LPFC_HBA_ERROR; 2602 break; 2603 } 2604 2605 lpfc_linkdown(phba); 2606 lpfc_init_link(phba, initlinkmbox, phba->cfg_topology, 2607 phba->cfg_link_speed); 2608 initlinkmbox->mb.un.varInitLnk.lipsr_AL_PA = 0; 2609 initlinkmbox->vport = vport; 2610 initlinkmbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl; 2611 rc = lpfc_sli_issue_mbox(phba, initlinkmbox, 2612 (MBX_NOWAIT | MBX_STOP_IOCB)); 2613 lpfc_set_loopback_flag(phba); 2614 if (rc == MBX_NOT_FINISHED) 2615 mempool_free(initlinkmbox, phba->mbox_mem_pool); 2616 2617 break; 2618 2619 case LPFC_DISC_AUTH: 2620 /* Node Authentication timeout */ 2621 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2622 "0227 Node Authentication timeout\n"); 2623 lpfc_disc_flush_list(vport); 2624 2625 /* 2626 * set port_state to PORT_READY if SLI2. 2627 * cmpl_reg_vpi will set port_state to READY for SLI3. 2628 */ 2629 if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED) 2630 lpfc_issue_reg_vpi(phba, vport); 2631 else { /* NPIV Not enabled */ 2632 lpfc_issue_clear_la(phba, vport); 2633 vport->port_state = LPFC_VPORT_READY; 2634 } 2635 break; 2636 2637 case LPFC_VPORT_READY: 2638 if (vport->fc_flag & FC_RSCN_MODE) { 2639 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2640 "0231 RSCN timeout Data: x%x " 2641 "x%x\n", 2642 vport->fc_ns_retry, LPFC_MAX_NS_RETRY); 2643 2644 /* Cleanup any outstanding ELS commands */ 2645 lpfc_els_flush_cmd(vport); 2646 2647 lpfc_els_flush_rscn(vport); 2648 lpfc_disc_flush_list(vport); 2649 } 2650 break; 2651 2652 default: 2653 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2654 "0229 Unexpected discovery timeout, " 2655 "vport State x%x\n", vport->port_state); 2656 break; 2657 } 2658 2659 switch (phba->link_state) { 2660 case LPFC_CLEAR_LA: 2661 /* CLEAR LA timeout */ 2662 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2663 "0228 CLEAR LA timeout\n"); 2664 clrlaerr = 1; 2665 break; 2666 2667 case LPFC_LINK_UNKNOWN: 2668 case LPFC_WARM_START: 2669 case LPFC_INIT_START: 2670 case LPFC_INIT_MBX_CMDS: 2671 case LPFC_LINK_DOWN: 2672 case LPFC_LINK_UP: 2673 case LPFC_HBA_ERROR: 2674 lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY, 2675 "0230 Unexpected timeout, hba link " 2676 "state x%x\n", phba->link_state); 2677 clrlaerr = 1; 2678 break; 2679 2680 case LPFC_HBA_READY: 2681 break; 2682 } 2683 2684 if (clrlaerr) { 2685 lpfc_disc_flush_list(vport); 2686 psli->ring[(psli->extra_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2687 psli->ring[(psli->fcp_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2688 psli->ring[(psli->next_ring)].flag &= ~LPFC_STOP_IOCB_EVENT; 2689 vport->port_state = LPFC_VPORT_READY; 2690 } 2691 2692 return; 2693 } 2694 2695 /* 2696 * This routine handles processing a NameServer REG_LOGIN mailbox 2697 * command upon completion. It is setup in the LPFC_MBOXQ 2698 * as the completion routine when the command is 2699 * handed off to the SLI layer. 2700 */ 2701 void 2702 lpfc_mbx_cmpl_fdmi_reg_login(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb) 2703 { 2704 MAILBOX_t *mb = &pmb->mb; 2705 struct lpfc_dmabuf *mp = (struct lpfc_dmabuf *) (pmb->context1); 2706 struct lpfc_nodelist *ndlp = (struct lpfc_nodelist *) pmb->context2; 2707 struct lpfc_vport *vport = pmb->vport; 2708 2709 pmb->context1 = NULL; 2710 2711 ndlp->nlp_rpi = mb->un.varWords[0]; 2712 ndlp->nlp_type |= NLP_FABRIC; 2713 lpfc_nlp_set_state(vport, ndlp, NLP_STE_UNMAPPED_NODE); 2714 2715 /* 2716 * Start issuing Fabric-Device Management Interface (FDMI) command to 2717 * 0xfffffa (FDMI well known port) or Delay issuing FDMI command if 2718 * fdmi-on=2 (supporting RPA/hostnmae) 2719 */ 2720 2721 if (vport->cfg_fdmi_on == 1) 2722 lpfc_fdmi_cmd(vport, ndlp, SLI_MGMT_DHBA); 2723 else 2724 mod_timer(&vport->fc_fdmitmo, jiffies + HZ * 60); 2725 2726 /* Mailbox took a reference to the node */ 2727 lpfc_nlp_put(ndlp); 2728 lpfc_mbuf_free(phba, mp->virt, mp->phys); 2729 kfree(mp); 2730 mempool_free(pmb, phba->mbox_mem_pool); 2731 2732 return; 2733 } 2734 2735 static int 2736 lpfc_filter_by_rpi(struct lpfc_nodelist *ndlp, void *param) 2737 { 2738 uint16_t *rpi = param; 2739 2740 return ndlp->nlp_rpi == *rpi; 2741 } 2742 2743 static int 2744 lpfc_filter_by_wwpn(struct lpfc_nodelist *ndlp, void *param) 2745 { 2746 return memcmp(&ndlp->nlp_portname, param, 2747 sizeof(ndlp->nlp_portname)) == 0; 2748 } 2749 2750 struct lpfc_nodelist * 2751 __lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 2752 { 2753 struct lpfc_nodelist *ndlp; 2754 2755 list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { 2756 if (ndlp->nlp_state != NLP_STE_UNUSED_NODE && 2757 filter(ndlp, param)) 2758 return ndlp; 2759 } 2760 return NULL; 2761 } 2762 2763 /* 2764 * Search node lists for a remote port matching filter criteria 2765 * Caller needs to hold host_lock before calling this routine. 2766 */ 2767 struct lpfc_nodelist * 2768 lpfc_find_node(struct lpfc_vport *vport, node_filter filter, void *param) 2769 { 2770 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2771 struct lpfc_nodelist *ndlp; 2772 2773 spin_lock_irq(shost->host_lock); 2774 ndlp = __lpfc_find_node(vport, filter, param); 2775 spin_unlock_irq(shost->host_lock); 2776 return ndlp; 2777 } 2778 2779 /* 2780 * This routine looks up the ndlp lists for the given RPI. If rpi found it 2781 * returns the node list element pointer else return NULL. 2782 */ 2783 struct lpfc_nodelist * 2784 __lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 2785 { 2786 return __lpfc_find_node(vport, lpfc_filter_by_rpi, &rpi); 2787 } 2788 2789 struct lpfc_nodelist * 2790 lpfc_findnode_rpi(struct lpfc_vport *vport, uint16_t rpi) 2791 { 2792 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2793 struct lpfc_nodelist *ndlp; 2794 2795 spin_lock_irq(shost->host_lock); 2796 ndlp = __lpfc_findnode_rpi(vport, rpi); 2797 spin_unlock_irq(shost->host_lock); 2798 return ndlp; 2799 } 2800 2801 /* 2802 * This routine looks up the ndlp lists for the given WWPN. If WWPN found it 2803 * returns the node element list pointer else return NULL. 2804 */ 2805 struct lpfc_nodelist * 2806 lpfc_findnode_wwpn(struct lpfc_vport *vport, struct lpfc_name *wwpn) 2807 { 2808 struct Scsi_Host *shost = lpfc_shost_from_vport(vport); 2809 struct lpfc_nodelist *ndlp; 2810 2811 spin_lock_irq(shost->host_lock); 2812 ndlp = __lpfc_find_node(vport, lpfc_filter_by_wwpn, wwpn); 2813 spin_unlock_irq(shost->host_lock); 2814 return ndlp; 2815 } 2816 2817 void 2818 lpfc_nlp_init(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 2819 uint32_t did) 2820 { 2821 memset(ndlp, 0, sizeof (struct lpfc_nodelist)); 2822 INIT_LIST_HEAD(&ndlp->els_retry_evt.evt_listp); 2823 INIT_LIST_HEAD(&ndlp->dev_loss_evt.evt_listp); 2824 init_timer(&ndlp->nlp_delayfunc); 2825 ndlp->nlp_delayfunc.function = lpfc_els_retry_delay; 2826 ndlp->nlp_delayfunc.data = (unsigned long)ndlp; 2827 ndlp->nlp_DID = did; 2828 ndlp->vport = vport; 2829 ndlp->nlp_sid = NLP_NO_SID; 2830 INIT_LIST_HEAD(&ndlp->nlp_listp); 2831 kref_init(&ndlp->kref); 2832 2833 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_NODE, 2834 "node init: did:x%x", 2835 ndlp->nlp_DID, 0, 0); 2836 2837 return; 2838 } 2839 2840 static void 2841 lpfc_nlp_release(struct kref *kref) 2842 { 2843 struct lpfc_nodelist *ndlp = container_of(kref, struct lpfc_nodelist, 2844 kref); 2845 2846 lpfc_debugfs_disc_trc(ndlp->vport, LPFC_DISC_TRC_NODE, 2847 "node release: did:x%x flg:x%x type:x%x", 2848 ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_type); 2849 2850 lpfc_nlp_remove(ndlp->vport, ndlp); 2851 mempool_free(ndlp, ndlp->vport->phba->nlp_mem_pool); 2852 } 2853 2854 struct lpfc_nodelist * 2855 lpfc_nlp_get(struct lpfc_nodelist *ndlp) 2856 { 2857 if (ndlp) 2858 kref_get(&ndlp->kref); 2859 return ndlp; 2860 } 2861 2862 int 2863 lpfc_nlp_put(struct lpfc_nodelist *ndlp) 2864 { 2865 return ndlp ? kref_put(&ndlp->kref, lpfc_nlp_release) : 0; 2866 } 2867