1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2023 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 ********************************************************************/ 23 #include <linux/pci.h> 24 #include <linux/slab.h> 25 #include <linux/interrupt.h> 26 #include <linux/delay.h> 27 #include <asm/unaligned.h> 28 #include <linux/crc-t10dif.h> 29 #include <net/checksum.h> 30 31 #include <scsi/scsi.h> 32 #include <scsi/scsi_device.h> 33 #include <scsi/scsi_eh.h> 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_tcq.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include "lpfc_version.h" 40 #include "lpfc_hw4.h" 41 #include "lpfc_hw.h" 42 #include "lpfc_sli.h" 43 #include "lpfc_sli4.h" 44 #include "lpfc_nl.h" 45 #include "lpfc_disc.h" 46 #include "lpfc.h" 47 #include "lpfc_nvme.h" 48 #include "lpfc_scsi.h" 49 #include "lpfc_logmsg.h" 50 #include "lpfc_crtn.h" 51 #include "lpfc_vport.h" 52 #include "lpfc_debugfs.h" 53 54 /* NVME initiator-based functions */ 55 56 static struct lpfc_io_buf * 57 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 58 int idx, int expedite); 59 60 static void 61 lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_io_buf *); 62 63 static struct nvme_fc_port_template lpfc_nvme_template; 64 65 /** 66 * lpfc_nvme_create_queue - 67 * @pnvme_lport: Transport localport that LS is to be issued from 68 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. 69 * @qsize: Size of the queue in bytes 70 * @handle: An opaque driver handle used in follow-up calls. 71 * 72 * Driver registers this routine to preallocate and initialize any 73 * internal data structures to bind the @qidx to its internal IO queues. 74 * A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ. 75 * 76 * Return value : 77 * 0 - Success 78 * -EINVAL - Unsupported input value. 79 * -ENOMEM - Could not alloc necessary memory 80 **/ 81 static int 82 lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport, 83 unsigned int qidx, u16 qsize, 84 void **handle) 85 { 86 struct lpfc_nvme_lport *lport; 87 struct lpfc_vport *vport; 88 struct lpfc_nvme_qhandle *qhandle; 89 char *str; 90 91 if (!pnvme_lport->private) 92 return -ENOMEM; 93 94 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 95 vport = lport->vport; 96 97 if (!vport || vport->load_flag & FC_UNLOADING || 98 vport->phba->hba_flag & HBA_IOQ_FLUSH) 99 return -ENODEV; 100 101 qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL); 102 if (qhandle == NULL) 103 return -ENOMEM; 104 105 qhandle->cpu_id = raw_smp_processor_id(); 106 qhandle->qidx = qidx; 107 /* 108 * NVME qidx == 0 is the admin queue, so both admin queue 109 * and first IO queue will use MSI-X vector and associated 110 * EQ/CQ/WQ at index 0. After that they are sequentially assigned. 111 */ 112 if (qidx) { 113 str = "IO "; /* IO queue */ 114 qhandle->index = ((qidx - 1) % 115 lpfc_nvme_template.max_hw_queues); 116 } else { 117 str = "ADM"; /* Admin queue */ 118 qhandle->index = qidx; 119 } 120 121 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 122 "6073 Binding %s HdwQueue %d (cpu %d) to " 123 "hdw_queue %d qhandle x%px\n", str, 124 qidx, qhandle->cpu_id, qhandle->index, qhandle); 125 *handle = (void *)qhandle; 126 return 0; 127 } 128 129 /** 130 * lpfc_nvme_delete_queue - 131 * @pnvme_lport: Transport localport that LS is to be issued from 132 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. 133 * @handle: An opaque driver handle from lpfc_nvme_create_queue 134 * 135 * Driver registers this routine to free 136 * any internal data structures to bind the @qidx to its internal 137 * IO queues. 138 * 139 * Return value : 140 * 0 - Success 141 * TODO: What are the failure codes. 142 **/ 143 static void 144 lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport, 145 unsigned int qidx, 146 void *handle) 147 { 148 struct lpfc_nvme_lport *lport; 149 struct lpfc_vport *vport; 150 151 if (!pnvme_lport->private) 152 return; 153 154 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 155 vport = lport->vport; 156 157 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 158 "6001 ENTER. lpfc_pnvme x%px, qidx x%x qhandle x%px\n", 159 lport, qidx, handle); 160 kfree(handle); 161 } 162 163 static void 164 lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport) 165 { 166 struct lpfc_nvme_lport *lport = localport->private; 167 168 lpfc_printf_vlog(lport->vport, KERN_INFO, LOG_NVME, 169 "6173 localport x%px delete complete\n", 170 lport); 171 172 /* release any threads waiting for the unreg to complete */ 173 if (lport->vport->localport) 174 complete(lport->lport_unreg_cmp); 175 } 176 177 /* lpfc_nvme_remoteport_delete 178 * 179 * @remoteport: Pointer to an nvme transport remoteport instance. 180 * 181 * This is a template downcall. NVME transport calls this function 182 * when it has completed the unregistration of a previously 183 * registered remoteport. 184 * 185 * Return value : 186 * None 187 */ 188 static void 189 lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport) 190 { 191 struct lpfc_nvme_rport *rport = remoteport->private; 192 struct lpfc_vport *vport; 193 struct lpfc_nodelist *ndlp; 194 u32 fc4_xpt_flags; 195 196 ndlp = rport->ndlp; 197 if (!ndlp) { 198 pr_err("**** %s: NULL ndlp on rport x%px remoteport x%px\n", 199 __func__, rport, remoteport); 200 goto rport_err; 201 } 202 203 vport = ndlp->vport; 204 if (!vport) { 205 pr_err("**** %s: Null vport on ndlp x%px, ste x%x rport x%px\n", 206 __func__, ndlp, ndlp->nlp_state, rport); 207 goto rport_err; 208 } 209 210 fc4_xpt_flags = NVME_XPT_REGD | SCSI_XPT_REGD; 211 212 /* Remove this rport from the lport's list - memory is owned by the 213 * transport. Remove the ndlp reference for the NVME transport before 214 * calling state machine to remove the node. 215 */ 216 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 217 "6146 remoteport delete of remoteport x%px, ndlp x%px " 218 "DID x%x xflags x%x\n", 219 remoteport, ndlp, ndlp->nlp_DID, ndlp->fc4_xpt_flags); 220 spin_lock_irq(&ndlp->lock); 221 222 /* The register rebind might have occurred before the delete 223 * downcall. Guard against this race. 224 */ 225 if (ndlp->fc4_xpt_flags & NVME_XPT_UNREG_WAIT) 226 ndlp->fc4_xpt_flags &= ~(NVME_XPT_UNREG_WAIT | NVME_XPT_REGD); 227 228 spin_unlock_irq(&ndlp->lock); 229 230 /* On a devloss timeout event, one more put is executed provided the 231 * NVME and SCSI rport unregister requests are complete. 232 */ 233 if (!(ndlp->fc4_xpt_flags & fc4_xpt_flags)) 234 lpfc_disc_state_machine(vport, ndlp, NULL, NLP_EVT_DEVICE_RM); 235 236 rport_err: 237 return; 238 } 239 240 /** 241 * lpfc_nvme_handle_lsreq - Process an unsolicited NVME LS request 242 * @phba: pointer to lpfc hba data structure. 243 * @axchg: pointer to exchange context for the NVME LS request 244 * 245 * This routine is used for processing an asychronously received NVME LS 246 * request. Any remaining validation is done and the LS is then forwarded 247 * to the nvme-fc transport via nvme_fc_rcv_ls_req(). 248 * 249 * The calling sequence should be: nvme_fc_rcv_ls_req() -> (processing) 250 * -> lpfc_nvme_xmt_ls_rsp/cmp -> req->done. 251 * __lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg. 252 * 253 * Returns 0 if LS was handled and delivered to the transport 254 * Returns 1 if LS failed to be handled and should be dropped 255 */ 256 int 257 lpfc_nvme_handle_lsreq(struct lpfc_hba *phba, 258 struct lpfc_async_xchg_ctx *axchg) 259 { 260 #if (IS_ENABLED(CONFIG_NVME_FC)) 261 struct lpfc_vport *vport; 262 struct lpfc_nvme_rport *lpfc_rport; 263 struct nvme_fc_remote_port *remoteport; 264 struct lpfc_nvme_lport *lport; 265 uint32_t *payload = axchg->payload; 266 int rc; 267 268 vport = axchg->ndlp->vport; 269 lpfc_rport = axchg->ndlp->nrport; 270 if (!lpfc_rport) 271 return -EINVAL; 272 273 remoteport = lpfc_rport->remoteport; 274 if (!vport->localport || 275 vport->phba->hba_flag & HBA_IOQ_FLUSH) 276 return -EINVAL; 277 278 lport = vport->localport->private; 279 if (!lport) 280 return -EINVAL; 281 282 rc = nvme_fc_rcv_ls_req(remoteport, &axchg->ls_rsp, axchg->payload, 283 axchg->size); 284 285 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 286 "6205 NVME Unsol rcv: sz %d rc %d: %08x %08x %08x " 287 "%08x %08x %08x\n", 288 axchg->size, rc, 289 *payload, *(payload+1), *(payload+2), 290 *(payload+3), *(payload+4), *(payload+5)); 291 292 if (!rc) 293 return 0; 294 #endif 295 return 1; 296 } 297 298 /** 299 * __lpfc_nvme_ls_req_cmp - Generic completion handler for a NVME 300 * LS request. 301 * @phba: Pointer to HBA context object 302 * @vport: The local port that issued the LS 303 * @cmdwqe: Pointer to driver command WQE object. 304 * @wcqe: Pointer to driver response CQE object. 305 * 306 * This function is the generic completion handler for NVME LS requests. 307 * The function updates any states and statistics, calls the transport 308 * ls_req done() routine, then tears down the command and buffers used 309 * for the LS request. 310 **/ 311 void 312 __lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_vport *vport, 313 struct lpfc_iocbq *cmdwqe, 314 struct lpfc_wcqe_complete *wcqe) 315 { 316 struct nvmefc_ls_req *pnvme_lsreq; 317 struct lpfc_dmabuf *buf_ptr; 318 struct lpfc_nodelist *ndlp; 319 int status; 320 321 pnvme_lsreq = cmdwqe->context_un.nvme_lsreq; 322 ndlp = cmdwqe->ndlp; 323 buf_ptr = cmdwqe->bpl_dmabuf; 324 325 status = bf_get(lpfc_wcqe_c_status, wcqe); 326 327 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 328 "6047 NVMEx LS REQ x%px cmpl DID %x Xri: %x " 329 "status %x reason x%x cmd:x%px lsreg:x%px bmp:x%px " 330 "ndlp:x%px\n", 331 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 332 cmdwqe->sli4_xritag, status, 333 (wcqe->parameter & 0xffff), 334 cmdwqe, pnvme_lsreq, cmdwqe->bpl_dmabuf, 335 ndlp); 336 337 lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x parm x%x\n", 338 cmdwqe->sli4_xritag, status, wcqe->parameter); 339 340 if (buf_ptr) { 341 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 342 kfree(buf_ptr); 343 cmdwqe->bpl_dmabuf = NULL; 344 } 345 if (pnvme_lsreq->done) { 346 if (status != CQE_STATUS_SUCCESS) 347 status = -ENXIO; 348 pnvme_lsreq->done(pnvme_lsreq, status); 349 } else { 350 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 351 "6046 NVMEx cmpl without done call back? " 352 "Data x%px DID %x Xri: %x status %x\n", 353 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 354 cmdwqe->sli4_xritag, status); 355 } 356 if (ndlp) { 357 lpfc_nlp_put(ndlp); 358 cmdwqe->ndlp = NULL; 359 } 360 lpfc_sli_release_iocbq(phba, cmdwqe); 361 } 362 363 static void 364 lpfc_nvme_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 365 struct lpfc_iocbq *rspwqe) 366 { 367 struct lpfc_vport *vport = cmdwqe->vport; 368 struct lpfc_nvme_lport *lport; 369 uint32_t status; 370 struct lpfc_wcqe_complete *wcqe = &rspwqe->wcqe_cmpl; 371 372 status = bf_get(lpfc_wcqe_c_status, wcqe); 373 374 if (vport->localport) { 375 lport = (struct lpfc_nvme_lport *)vport->localport->private; 376 if (lport) { 377 atomic_inc(&lport->fc4NvmeLsCmpls); 378 if (status) { 379 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 380 atomic_inc(&lport->cmpl_ls_xb); 381 atomic_inc(&lport->cmpl_ls_err); 382 } 383 } 384 } 385 386 __lpfc_nvme_ls_req_cmp(phba, vport, cmdwqe, wcqe); 387 } 388 389 static int 390 lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp, 391 struct lpfc_dmabuf *inp, 392 struct nvmefc_ls_req *pnvme_lsreq, 393 void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 394 struct lpfc_iocbq *), 395 struct lpfc_nodelist *ndlp, uint32_t num_entry, 396 uint32_t tmo, uint8_t retry) 397 { 398 struct lpfc_hba *phba = vport->phba; 399 union lpfc_wqe128 *wqe; 400 struct lpfc_iocbq *genwqe; 401 struct ulp_bde64 *bpl; 402 struct ulp_bde64 bde; 403 int i, rc, xmit_len, first_len; 404 405 /* Allocate buffer for command WQE */ 406 genwqe = lpfc_sli_get_iocbq(phba); 407 if (genwqe == NULL) 408 return 1; 409 410 wqe = &genwqe->wqe; 411 /* Initialize only 64 bytes */ 412 memset(wqe, 0, sizeof(union lpfc_wqe)); 413 414 genwqe->bpl_dmabuf = bmp; 415 genwqe->cmd_flag |= LPFC_IO_NVME_LS; 416 417 /* Save for completion so we can release these resources */ 418 genwqe->ndlp = lpfc_nlp_get(ndlp); 419 if (!genwqe->ndlp) { 420 dev_warn(&phba->pcidev->dev, 421 "Warning: Failed node ref, not sending LS_REQ\n"); 422 lpfc_sli_release_iocbq(phba, genwqe); 423 return 1; 424 } 425 426 genwqe->context_un.nvme_lsreq = pnvme_lsreq; 427 /* Fill in payload, bp points to frame payload */ 428 429 if (!tmo) 430 /* FC spec states we need 3 * ratov for CT requests */ 431 tmo = (3 * phba->fc_ratov); 432 433 /* For this command calculate the xmit length of the request bde. */ 434 xmit_len = 0; 435 first_len = 0; 436 bpl = (struct ulp_bde64 *)bmp->virt; 437 for (i = 0; i < num_entry; i++) { 438 bde.tus.w = bpl[i].tus.w; 439 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) 440 break; 441 xmit_len += bde.tus.f.bdeSize; 442 if (i == 0) 443 first_len = xmit_len; 444 } 445 446 genwqe->num_bdes = num_entry; 447 genwqe->hba_wqidx = 0; 448 449 /* Words 0 - 2 */ 450 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 451 wqe->generic.bde.tus.f.bdeSize = first_len; 452 wqe->generic.bde.addrLow = bpl[0].addrLow; 453 wqe->generic.bde.addrHigh = bpl[0].addrHigh; 454 455 /* Word 3 */ 456 wqe->gen_req.request_payload_len = first_len; 457 458 /* Word 4 */ 459 460 /* Word 5 */ 461 bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0); 462 bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1); 463 bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1); 464 bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ); 465 bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME); 466 467 /* Word 6 */ 468 bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com, 469 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 470 bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag); 471 472 /* Word 7 */ 473 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, tmo); 474 bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3); 475 bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE); 476 bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI); 477 478 /* Word 8 */ 479 wqe->gen_req.wqe_com.abort_tag = genwqe->iotag; 480 481 /* Word 9 */ 482 bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag); 483 484 /* Word 10 */ 485 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); 486 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); 487 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); 488 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); 489 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); 490 491 /* Word 11 */ 492 bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 493 bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND); 494 495 496 /* Issue GEN REQ WQE for NPORT <did> */ 497 genwqe->cmd_cmpl = cmpl; 498 genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT; 499 genwqe->vport = vport; 500 genwqe->retry = retry; 501 502 lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n", 503 genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID); 504 505 rc = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], genwqe); 506 if (rc) { 507 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 508 "6045 Issue GEN REQ WQE to NPORT x%x " 509 "Data: x%x x%x rc x%x\n", 510 ndlp->nlp_DID, genwqe->iotag, 511 vport->port_state, rc); 512 lpfc_nlp_put(ndlp); 513 lpfc_sli_release_iocbq(phba, genwqe); 514 return 1; 515 } 516 517 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_ELS, 518 "6050 Issue GEN REQ WQE to NPORT x%x " 519 "Data: oxid: x%x state: x%x wq:x%px lsreq:x%px " 520 "bmp:x%px xmit:%d 1st:%d\n", 521 ndlp->nlp_DID, genwqe->sli4_xritag, 522 vport->port_state, 523 genwqe, pnvme_lsreq, bmp, xmit_len, first_len); 524 return 0; 525 } 526 527 528 /** 529 * __lpfc_nvme_ls_req - Generic service routine to issue an NVME LS request 530 * @vport: The local port issuing the LS 531 * @ndlp: The remote port to send the LS to 532 * @pnvme_lsreq: Pointer to LS request structure from the transport 533 * @gen_req_cmp: Completion call-back 534 * 535 * Routine validates the ndlp, builds buffers and sends a GEN_REQUEST 536 * WQE to perform the LS operation. 537 * 538 * Return value : 539 * 0 - Success 540 * non-zero: various error codes, in form of -Exxx 541 **/ 542 int 543 __lpfc_nvme_ls_req(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 544 struct nvmefc_ls_req *pnvme_lsreq, 545 void (*gen_req_cmp)(struct lpfc_hba *phba, 546 struct lpfc_iocbq *cmdwqe, 547 struct lpfc_iocbq *rspwqe)) 548 { 549 struct lpfc_dmabuf *bmp; 550 struct ulp_bde64 *bpl; 551 int ret; 552 uint16_t ntype, nstate; 553 554 if (!ndlp) { 555 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 556 "6051 NVMEx LS REQ: Bad NDLP x%px, Failing " 557 "LS Req\n", 558 ndlp); 559 return -ENODEV; 560 } 561 562 ntype = ndlp->nlp_type; 563 nstate = ndlp->nlp_state; 564 if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) || 565 (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) { 566 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 567 "6088 NVMEx LS REQ: Fail DID x%06x not " 568 "ready for IO. Type x%x, State x%x\n", 569 ndlp->nlp_DID, ntype, nstate); 570 return -ENODEV; 571 } 572 if (vport->phba->hba_flag & HBA_IOQ_FLUSH) 573 return -ENODEV; 574 575 if (!vport->phba->sli4_hba.nvmels_wq) 576 return -ENOMEM; 577 578 /* 579 * there are two dma buf in the request, actually there is one and 580 * the second one is just the start address + cmd size. 581 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped 582 * in a lpfc_dmabuf struct. When freeing we just free the wrapper 583 * because the nvem layer owns the data bufs. 584 * We do not have to break these packets open, we don't care what is 585 * in them. And we do not have to look at the resonse data, we only 586 * care that we got a response. All of the caring is going to happen 587 * in the nvme-fc layer. 588 */ 589 590 bmp = kmalloc(sizeof(*bmp), GFP_KERNEL); 591 if (!bmp) { 592 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 593 "6044 NVMEx LS REQ: Could not alloc LS buf " 594 "for DID %x\n", 595 ndlp->nlp_DID); 596 return -ENOMEM; 597 } 598 599 bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys)); 600 if (!bmp->virt) { 601 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 602 "6042 NVMEx LS REQ: Could not alloc mbuf " 603 "for DID %x\n", 604 ndlp->nlp_DID); 605 kfree(bmp); 606 return -ENOMEM; 607 } 608 609 INIT_LIST_HEAD(&bmp->list); 610 611 bpl = (struct ulp_bde64 *)bmp->virt; 612 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma)); 613 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma)); 614 bpl->tus.f.bdeFlags = 0; 615 bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen; 616 bpl->tus.w = le32_to_cpu(bpl->tus.w); 617 bpl++; 618 619 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma)); 620 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma)); 621 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 622 bpl->tus.f.bdeSize = pnvme_lsreq->rsplen; 623 bpl->tus.w = le32_to_cpu(bpl->tus.w); 624 625 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 626 "6149 NVMEx LS REQ: Issue to DID 0x%06x lsreq x%px, " 627 "rqstlen:%d rsplen:%d %pad %pad\n", 628 ndlp->nlp_DID, pnvme_lsreq, pnvme_lsreq->rqstlen, 629 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 630 &pnvme_lsreq->rspdma); 631 632 ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr, 633 pnvme_lsreq, gen_req_cmp, ndlp, 2, 634 pnvme_lsreq->timeout, 0); 635 if (ret != WQE_SUCCESS) { 636 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 637 "6052 NVMEx REQ: EXIT. issue ls wqe failed " 638 "lsreq x%px Status %x DID %x\n", 639 pnvme_lsreq, ret, ndlp->nlp_DID); 640 lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys); 641 kfree(bmp); 642 return -EIO; 643 } 644 645 return 0; 646 } 647 648 /** 649 * lpfc_nvme_ls_req - Issue an NVME Link Service request 650 * @pnvme_lport: Transport localport that LS is to be issued from. 651 * @pnvme_rport: Transport remoteport that LS is to be sent to. 652 * @pnvme_lsreq: the transport nvme_ls_req structure for the LS 653 * 654 * Driver registers this routine to handle any link service request 655 * from the nvme_fc transport to a remote nvme-aware port. 656 * 657 * Return value : 658 * 0 - Success 659 * non-zero: various error codes, in form of -Exxx 660 **/ 661 static int 662 lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, 663 struct nvme_fc_remote_port *pnvme_rport, 664 struct nvmefc_ls_req *pnvme_lsreq) 665 { 666 struct lpfc_nvme_lport *lport; 667 struct lpfc_nvme_rport *rport; 668 struct lpfc_vport *vport; 669 int ret; 670 671 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 672 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 673 if (unlikely(!lport) || unlikely(!rport)) 674 return -EINVAL; 675 676 vport = lport->vport; 677 if (vport->load_flag & FC_UNLOADING || 678 vport->phba->hba_flag & HBA_IOQ_FLUSH) 679 return -ENODEV; 680 681 atomic_inc(&lport->fc4NvmeLsRequests); 682 683 ret = __lpfc_nvme_ls_req(vport, rport->ndlp, pnvme_lsreq, 684 lpfc_nvme_ls_req_cmp); 685 if (ret) 686 atomic_inc(&lport->xmt_ls_err); 687 688 return ret; 689 } 690 691 /** 692 * __lpfc_nvme_ls_abort - Generic service routine to abort a prior 693 * NVME LS request 694 * @vport: The local port that issued the LS 695 * @ndlp: The remote port the LS was sent to 696 * @pnvme_lsreq: Pointer to LS request structure from the transport 697 * 698 * The driver validates the ndlp, looks for the LS, and aborts the 699 * LS if found. 700 * 701 * Returns: 702 * 0 : if LS found and aborted 703 * non-zero: various error conditions in form -Exxx 704 **/ 705 int 706 __lpfc_nvme_ls_abort(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, 707 struct nvmefc_ls_req *pnvme_lsreq) 708 { 709 struct lpfc_hba *phba = vport->phba; 710 struct lpfc_sli_ring *pring; 711 struct lpfc_iocbq *wqe, *next_wqe; 712 bool foundit = false; 713 714 if (!ndlp) { 715 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 716 "6049 NVMEx LS REQ Abort: Bad NDLP x%px DID " 717 "x%06x, Failing LS Req\n", 718 ndlp, ndlp ? ndlp->nlp_DID : 0); 719 return -EINVAL; 720 } 721 722 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS, 723 "6040 NVMEx LS REQ Abort: Issue LS_ABORT for lsreq " 724 "x%px rqstlen:%d rsplen:%d %pad %pad\n", 725 pnvme_lsreq, pnvme_lsreq->rqstlen, 726 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 727 &pnvme_lsreq->rspdma); 728 729 /* 730 * Lock the ELS ring txcmplq and look for the wqe that matches 731 * this ELS. If found, issue an abort on the wqe. 732 */ 733 pring = phba->sli4_hba.nvmels_wq->pring; 734 spin_lock_irq(&phba->hbalock); 735 spin_lock(&pring->ring_lock); 736 list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) { 737 if (wqe->context_un.nvme_lsreq == pnvme_lsreq) { 738 wqe->cmd_flag |= LPFC_DRIVER_ABORTED; 739 foundit = true; 740 break; 741 } 742 } 743 spin_unlock(&pring->ring_lock); 744 745 if (foundit) 746 lpfc_sli_issue_abort_iotag(phba, pring, wqe, NULL); 747 spin_unlock_irq(&phba->hbalock); 748 749 if (foundit) 750 return 0; 751 752 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC | LOG_NVME_ABTS, 753 "6213 NVMEx LS REQ Abort: Unable to locate req x%px\n", 754 pnvme_lsreq); 755 return -EINVAL; 756 } 757 758 static int 759 lpfc_nvme_xmt_ls_rsp(struct nvme_fc_local_port *localport, 760 struct nvme_fc_remote_port *remoteport, 761 struct nvmefc_ls_rsp *ls_rsp) 762 { 763 struct lpfc_async_xchg_ctx *axchg = 764 container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp); 765 struct lpfc_nvme_lport *lport; 766 int rc; 767 768 if (axchg->phba->pport->load_flag & FC_UNLOADING) 769 return -ENODEV; 770 771 lport = (struct lpfc_nvme_lport *)localport->private; 772 773 rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, __lpfc_nvme_xmt_ls_rsp_cmp); 774 775 if (rc) { 776 /* 777 * unless the failure is due to having already sent 778 * the response, an abort will be generated for the 779 * exchange if the rsp can't be sent. 780 */ 781 if (rc != -EALREADY) 782 atomic_inc(&lport->xmt_ls_abort); 783 return rc; 784 } 785 786 return 0; 787 } 788 789 /** 790 * lpfc_nvme_ls_abort - Abort a prior NVME LS request 791 * @pnvme_lport: Transport localport that LS is to be issued from. 792 * @pnvme_rport: Transport remoteport that LS is to be sent to. 793 * @pnvme_lsreq: the transport nvme_ls_req structure for the LS 794 * 795 * Driver registers this routine to abort a NVME LS request that is 796 * in progress (from the transports perspective). 797 **/ 798 static void 799 lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport, 800 struct nvme_fc_remote_port *pnvme_rport, 801 struct nvmefc_ls_req *pnvme_lsreq) 802 { 803 struct lpfc_nvme_lport *lport; 804 struct lpfc_vport *vport; 805 struct lpfc_nodelist *ndlp; 806 int ret; 807 808 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 809 if (unlikely(!lport)) 810 return; 811 vport = lport->vport; 812 813 if (vport->load_flag & FC_UNLOADING) 814 return; 815 816 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); 817 818 ret = __lpfc_nvme_ls_abort(vport, ndlp, pnvme_lsreq); 819 if (!ret) 820 atomic_inc(&lport->xmt_ls_abort); 821 } 822 823 /* Fix up the existing sgls for NVME IO. */ 824 static inline void 825 lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport, 826 struct lpfc_io_buf *lpfc_ncmd, 827 struct nvmefc_fcp_req *nCmd) 828 { 829 struct lpfc_hba *phba = vport->phba; 830 struct sli4_sge *sgl; 831 union lpfc_wqe128 *wqe; 832 uint32_t *wptr, *dptr; 833 834 /* 835 * Get a local pointer to the built-in wqe and correct 836 * the cmd size to match NVME's 96 bytes and fix 837 * the dma address. 838 */ 839 840 wqe = &lpfc_ncmd->cur_iocbq.wqe; 841 842 /* 843 * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to 844 * match NVME. NVME sends 96 bytes. Also, use the 845 * nvme commands command and response dma addresses 846 * rather than the virtual memory to ease the restore 847 * operation. 848 */ 849 sgl = lpfc_ncmd->dma_sgl; 850 sgl->sge_len = cpu_to_le32(nCmd->cmdlen); 851 if (phba->cfg_nvme_embed_cmd) { 852 sgl->addr_hi = 0; 853 sgl->addr_lo = 0; 854 855 /* Word 0-2 - NVME CMND IU (embedded payload) */ 856 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED; 857 wqe->generic.bde.tus.f.bdeSize = 56; 858 wqe->generic.bde.addrHigh = 0; 859 wqe->generic.bde.addrLow = 64; /* Word 16 */ 860 861 /* Word 10 - dbde is 0, wqes is 1 in template */ 862 863 /* 864 * Embed the payload in the last half of the WQE 865 * WQE words 16-30 get the NVME CMD IU payload 866 * 867 * WQE words 16-19 get payload Words 1-4 868 * WQE words 20-21 get payload Words 6-7 869 * WQE words 22-29 get payload Words 16-23 870 */ 871 wptr = &wqe->words[16]; /* WQE ptr */ 872 dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */ 873 dptr++; /* Skip Word 0 in payload */ 874 875 *wptr++ = *dptr++; /* Word 1 */ 876 *wptr++ = *dptr++; /* Word 2 */ 877 *wptr++ = *dptr++; /* Word 3 */ 878 *wptr++ = *dptr++; /* Word 4 */ 879 dptr++; /* Skip Word 5 in payload */ 880 *wptr++ = *dptr++; /* Word 6 */ 881 *wptr++ = *dptr++; /* Word 7 */ 882 dptr += 8; /* Skip Words 8-15 in payload */ 883 *wptr++ = *dptr++; /* Word 16 */ 884 *wptr++ = *dptr++; /* Word 17 */ 885 *wptr++ = *dptr++; /* Word 18 */ 886 *wptr++ = *dptr++; /* Word 19 */ 887 *wptr++ = *dptr++; /* Word 20 */ 888 *wptr++ = *dptr++; /* Word 21 */ 889 *wptr++ = *dptr++; /* Word 22 */ 890 *wptr = *dptr; /* Word 23 */ 891 } else { 892 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->cmddma)); 893 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->cmddma)); 894 895 /* Word 0-2 - NVME CMND IU Inline BDE */ 896 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 897 wqe->generic.bde.tus.f.bdeSize = nCmd->cmdlen; 898 wqe->generic.bde.addrHigh = sgl->addr_hi; 899 wqe->generic.bde.addrLow = sgl->addr_lo; 900 901 /* Word 10 */ 902 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1); 903 bf_set(wqe_wqes, &wqe->generic.wqe_com, 0); 904 } 905 906 sgl++; 907 908 /* Setup the physical region for the FCP RSP */ 909 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma)); 910 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma)); 911 sgl->word2 = le32_to_cpu(sgl->word2); 912 if (nCmd->sg_cnt) 913 bf_set(lpfc_sli4_sge_last, sgl, 0); 914 else 915 bf_set(lpfc_sli4_sge_last, sgl, 1); 916 sgl->word2 = cpu_to_le32(sgl->word2); 917 sgl->sge_len = cpu_to_le32(nCmd->rsplen); 918 } 919 920 921 /* 922 * lpfc_nvme_io_cmd_cmpl - Complete an NVME-over-FCP IO 923 * 924 * Driver registers this routine as it io request handler. This 925 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 926 * data structure to the rport indicated in @lpfc_nvme_rport. 927 * 928 * Return value : 929 * 0 - Success 930 * TODO: What are the failure codes. 931 **/ 932 static void 933 lpfc_nvme_io_cmd_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 934 struct lpfc_iocbq *pwqeOut) 935 { 936 struct lpfc_io_buf *lpfc_ncmd = pwqeIn->io_buf; 937 struct lpfc_wcqe_complete *wcqe = &pwqeOut->wcqe_cmpl; 938 struct lpfc_vport *vport = pwqeIn->vport; 939 struct nvmefc_fcp_req *nCmd; 940 struct nvme_fc_ersp_iu *ep; 941 struct nvme_fc_cmd_iu *cp; 942 struct lpfc_nodelist *ndlp; 943 struct lpfc_nvme_fcpreq_priv *freqpriv; 944 struct lpfc_nvme_lport *lport; 945 uint32_t code, status, idx; 946 uint16_t cid, sqhd, data; 947 uint32_t *ptr; 948 uint32_t lat; 949 bool call_done = false; 950 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 951 int cpu; 952 #endif 953 int offline = 0; 954 955 /* Sanity check on return of outstanding command */ 956 if (!lpfc_ncmd) { 957 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 958 "6071 Null lpfc_ncmd pointer. No " 959 "release, skip completion\n"); 960 return; 961 } 962 963 /* Guard against abort handler being called at same time */ 964 spin_lock(&lpfc_ncmd->buf_lock); 965 966 if (!lpfc_ncmd->nvmeCmd) { 967 spin_unlock(&lpfc_ncmd->buf_lock); 968 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 969 "6066 Missing cmpl ptrs: lpfc_ncmd x%px, " 970 "nvmeCmd x%px\n", 971 lpfc_ncmd, lpfc_ncmd->nvmeCmd); 972 973 /* Release the lpfc_ncmd regardless of the missing elements. */ 974 lpfc_release_nvme_buf(phba, lpfc_ncmd); 975 return; 976 } 977 nCmd = lpfc_ncmd->nvmeCmd; 978 status = bf_get(lpfc_wcqe_c_status, wcqe); 979 980 idx = lpfc_ncmd->cur_iocbq.hba_wqidx; 981 phba->sli4_hba.hdwq[idx].nvme_cstat.io_cmpls++; 982 983 if (unlikely(status && vport->localport)) { 984 lport = (struct lpfc_nvme_lport *)vport->localport->private; 985 if (lport) { 986 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 987 atomic_inc(&lport->cmpl_fcp_xb); 988 atomic_inc(&lport->cmpl_fcp_err); 989 } 990 } 991 992 lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n", 993 lpfc_ncmd->cur_iocbq.sli4_xritag, 994 status, wcqe->parameter); 995 /* 996 * Catch race where our node has transitioned, but the 997 * transport is still transitioning. 998 */ 999 ndlp = lpfc_ncmd->ndlp; 1000 if (!ndlp) { 1001 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1002 "6062 Ignoring NVME cmpl. No ndlp\n"); 1003 goto out_err; 1004 } 1005 1006 code = bf_get(lpfc_wcqe_c_code, wcqe); 1007 if (code == CQE_CODE_NVME_ERSP) { 1008 /* For this type of CQE, we need to rebuild the rsp */ 1009 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; 1010 1011 /* 1012 * Get Command Id from cmd to plug into response. This 1013 * code is not needed in the next NVME Transport drop. 1014 */ 1015 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; 1016 cid = cp->sqe.common.command_id; 1017 1018 /* 1019 * RSN is in CQE word 2 1020 * SQHD is in CQE Word 3 bits 15:0 1021 * Cmd Specific info is in CQE Word 1 1022 * and in CQE Word 0 bits 15:0 1023 */ 1024 sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe); 1025 1026 /* Now lets build the NVME ERSP IU */ 1027 ep->iu_len = cpu_to_be16(8); 1028 ep->rsn = wcqe->parameter; 1029 ep->xfrd_len = cpu_to_be32(nCmd->payload_length); 1030 ep->rsvd12 = 0; 1031 ptr = (uint32_t *)&ep->cqe.result.u64; 1032 *ptr++ = wcqe->total_data_placed; 1033 data = bf_get(lpfc_wcqe_c_ersp0, wcqe); 1034 *ptr = (uint32_t)data; 1035 ep->cqe.sq_head = sqhd; 1036 ep->cqe.sq_id = nCmd->sqid; 1037 ep->cqe.command_id = cid; 1038 ep->cqe.status = 0; 1039 1040 lpfc_ncmd->status = IOSTAT_SUCCESS; 1041 lpfc_ncmd->result = 0; 1042 nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN; 1043 nCmd->transferred_length = nCmd->payload_length; 1044 } else { 1045 lpfc_ncmd->status = status; 1046 lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 1047 1048 /* For NVME, the only failure path that results in an 1049 * IO error is when the adapter rejects it. All other 1050 * conditions are a success case and resolved by the 1051 * transport. 1052 * IOSTAT_FCP_RSP_ERROR means: 1053 * 1. Length of data received doesn't match total 1054 * transfer length in WQE 1055 * 2. If the RSP payload does NOT match these cases: 1056 * a. RSP length 12/24 bytes and all zeros 1057 * b. NVME ERSP 1058 */ 1059 switch (lpfc_ncmd->status) { 1060 case IOSTAT_SUCCESS: 1061 nCmd->transferred_length = wcqe->total_data_placed; 1062 nCmd->rcv_rsplen = 0; 1063 nCmd->status = 0; 1064 break; 1065 case IOSTAT_FCP_RSP_ERROR: 1066 nCmd->transferred_length = wcqe->total_data_placed; 1067 nCmd->rcv_rsplen = wcqe->parameter; 1068 nCmd->status = 0; 1069 1070 /* Get the NVME cmd details for this unique error. */ 1071 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; 1072 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; 1073 1074 /* Check if this is really an ERSP */ 1075 if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN) { 1076 lpfc_ncmd->status = IOSTAT_SUCCESS; 1077 lpfc_ncmd->result = 0; 1078 1079 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 1080 "6084 NVME FCP_ERR ERSP: " 1081 "xri %x placed x%x opcode x%x cmd_id " 1082 "x%x cqe_status x%x\n", 1083 lpfc_ncmd->cur_iocbq.sli4_xritag, 1084 wcqe->total_data_placed, 1085 cp->sqe.common.opcode, 1086 cp->sqe.common.command_id, 1087 ep->cqe.status); 1088 break; 1089 } 1090 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1091 "6081 NVME Completion Protocol Error: " 1092 "xri %x status x%x result x%x " 1093 "placed x%x opcode x%x cmd_id x%x, " 1094 "cqe_status x%x\n", 1095 lpfc_ncmd->cur_iocbq.sli4_xritag, 1096 lpfc_ncmd->status, lpfc_ncmd->result, 1097 wcqe->total_data_placed, 1098 cp->sqe.common.opcode, 1099 cp->sqe.common.command_id, 1100 ep->cqe.status); 1101 break; 1102 case IOSTAT_LOCAL_REJECT: 1103 /* Let fall through to set command final state. */ 1104 if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED) 1105 lpfc_printf_vlog(vport, KERN_INFO, 1106 LOG_NVME_IOERR, 1107 "6032 Delay Aborted cmd x%px " 1108 "nvme cmd x%px, xri x%x, " 1109 "xb %d\n", 1110 lpfc_ncmd, nCmd, 1111 lpfc_ncmd->cur_iocbq.sli4_xritag, 1112 bf_get(lpfc_wcqe_c_xb, wcqe)); 1113 fallthrough; 1114 default: 1115 out_err: 1116 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1117 "6072 NVME Completion Error: xri %x " 1118 "status x%x result x%x [x%x] " 1119 "placed x%x\n", 1120 lpfc_ncmd->cur_iocbq.sli4_xritag, 1121 lpfc_ncmd->status, lpfc_ncmd->result, 1122 wcqe->parameter, 1123 wcqe->total_data_placed); 1124 nCmd->transferred_length = 0; 1125 nCmd->rcv_rsplen = 0; 1126 nCmd->status = NVME_SC_INTERNAL; 1127 offline = pci_channel_offline(vport->phba->pcidev); 1128 } 1129 } 1130 1131 /* pick up SLI4 exhange busy condition */ 1132 if (bf_get(lpfc_wcqe_c_xb, wcqe) && !offline) 1133 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 1134 else 1135 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 1136 1137 /* Update stats and complete the IO. There is 1138 * no need for dma unprep because the nvme_transport 1139 * owns the dma address. 1140 */ 1141 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1142 if (lpfc_ncmd->ts_cmd_start) { 1143 lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp; 1144 lpfc_ncmd->ts_data_io = ktime_get_ns(); 1145 phba->ktime_last_cmd = lpfc_ncmd->ts_data_io; 1146 lpfc_io_ktime(phba, lpfc_ncmd); 1147 } 1148 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_NVME_IO)) { 1149 cpu = raw_smp_processor_id(); 1150 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 1151 if (lpfc_ncmd->cpu != cpu) 1152 lpfc_printf_vlog(vport, 1153 KERN_INFO, LOG_NVME_IOERR, 1154 "6701 CPU Check cmpl: " 1155 "cpu %d expect %d\n", 1156 cpu, lpfc_ncmd->cpu); 1157 } 1158 #endif 1159 1160 /* NVME targets need completion held off until the abort exchange 1161 * completes unless the NVME Rport is getting unregistered. 1162 */ 1163 1164 if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 1165 freqpriv = nCmd->private; 1166 freqpriv->nvme_buf = NULL; 1167 lpfc_ncmd->nvmeCmd = NULL; 1168 call_done = true; 1169 } 1170 spin_unlock(&lpfc_ncmd->buf_lock); 1171 1172 /* Check if IO qualified for CMF */ 1173 if (phba->cmf_active_mode != LPFC_CFG_OFF && 1174 nCmd->io_dir == NVMEFC_FCP_READ && 1175 nCmd->payload_length) { 1176 /* Used when calculating average latency */ 1177 lat = ktime_get_ns() - lpfc_ncmd->rx_cmd_start; 1178 lpfc_update_cmf_cmpl(phba, lat, nCmd->payload_length, NULL); 1179 } 1180 1181 if (call_done) 1182 nCmd->done(nCmd); 1183 1184 /* Call release with XB=1 to queue the IO into the abort list. */ 1185 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1186 } 1187 1188 1189 /** 1190 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO 1191 * @vport: pointer to a host virtual N_Port data structure 1192 * @lpfc_ncmd: Pointer to lpfc scsi command 1193 * @pnode: pointer to a node-list data structure 1194 * @cstat: pointer to the control status structure 1195 * 1196 * Driver registers this routine as it io request handler. This 1197 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1198 * data structure to the rport indicated in @lpfc_nvme_rport. 1199 * 1200 * Return value : 1201 * 0 - Success 1202 * TODO: What are the failure codes. 1203 **/ 1204 static int 1205 lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, 1206 struct lpfc_io_buf *lpfc_ncmd, 1207 struct lpfc_nodelist *pnode, 1208 struct lpfc_fc4_ctrl_stat *cstat) 1209 { 1210 struct lpfc_hba *phba = vport->phba; 1211 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1212 struct nvme_common_command *sqe; 1213 struct lpfc_iocbq *pwqeq = &lpfc_ncmd->cur_iocbq; 1214 union lpfc_wqe128 *wqe = &pwqeq->wqe; 1215 uint32_t req_len; 1216 1217 /* 1218 * There are three possibilities here - use scatter-gather segment, use 1219 * the single mapping, or neither. 1220 */ 1221 if (nCmd->sg_cnt) { 1222 if (nCmd->io_dir == NVMEFC_FCP_WRITE) { 1223 /* From the iwrite template, initialize words 7 - 11 */ 1224 memcpy(&wqe->words[7], 1225 &lpfc_iwrite_cmd_template.words[7], 1226 sizeof(uint32_t) * 5); 1227 1228 /* Word 4 */ 1229 wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length; 1230 1231 /* Word 5 */ 1232 if ((phba->cfg_nvme_enable_fb) && 1233 (pnode->nlp_flag & NLP_FIRSTBURST)) { 1234 req_len = lpfc_ncmd->nvmeCmd->payload_length; 1235 if (req_len < pnode->nvme_fb_size) 1236 wqe->fcp_iwrite.initial_xfer_len = 1237 req_len; 1238 else 1239 wqe->fcp_iwrite.initial_xfer_len = 1240 pnode->nvme_fb_size; 1241 } else { 1242 wqe->fcp_iwrite.initial_xfer_len = 0; 1243 } 1244 cstat->output_requests++; 1245 } else { 1246 /* From the iread template, initialize words 7 - 11 */ 1247 memcpy(&wqe->words[7], 1248 &lpfc_iread_cmd_template.words[7], 1249 sizeof(uint32_t) * 5); 1250 1251 /* Word 4 */ 1252 wqe->fcp_iread.total_xfer_len = nCmd->payload_length; 1253 1254 /* Word 5 */ 1255 wqe->fcp_iread.rsrvd5 = 0; 1256 1257 /* For a CMF Managed port, iod must be zero'ed */ 1258 if (phba->cmf_active_mode == LPFC_CFG_MANAGED) 1259 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, 1260 LPFC_WQE_IOD_NONE); 1261 cstat->input_requests++; 1262 } 1263 } else { 1264 /* From the icmnd template, initialize words 4 - 11 */ 1265 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 1266 sizeof(uint32_t) * 8); 1267 cstat->control_requests++; 1268 } 1269 1270 if (pnode->nlp_nvme_info & NLP_NVME_NSLER) { 1271 bf_set(wqe_erp, &wqe->generic.wqe_com, 1); 1272 sqe = &((struct nvme_fc_cmd_iu *) 1273 nCmd->cmdaddr)->sqe.common; 1274 if (sqe->opcode == nvme_admin_async_event) 1275 bf_set(wqe_ffrq, &wqe->generic.wqe_com, 1); 1276 } 1277 1278 /* 1279 * Finish initializing those WQE fields that are independent 1280 * of the nvme_cmnd request_buffer 1281 */ 1282 1283 /* Word 3 */ 1284 bf_set(payload_offset_len, &wqe->fcp_icmd, 1285 (nCmd->rsplen + nCmd->cmdlen)); 1286 1287 /* Word 6 */ 1288 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 1289 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 1290 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 1291 1292 /* Word 8 */ 1293 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 1294 1295 /* Word 9 */ 1296 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 1297 1298 /* Word 10 */ 1299 bf_set(wqe_xchg, &wqe->fcp_iwrite.wqe_com, LPFC_NVME_XCHG); 1300 1301 /* Words 13 14 15 are for PBDE support */ 1302 1303 /* add the VMID tags as per switch response */ 1304 if (unlikely(lpfc_ncmd->cur_iocbq.cmd_flag & LPFC_IO_VMID)) { 1305 if (phba->pport->vmid_priority_tagging) { 1306 bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1); 1307 bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com, 1308 lpfc_ncmd->cur_iocbq.vmid_tag.cs_ctl_vmid); 1309 } else { 1310 bf_set(wqe_appid, &wqe->fcp_iwrite.wqe_com, 1); 1311 bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1); 1312 wqe->words[31] = lpfc_ncmd->cur_iocbq.vmid_tag.app_id; 1313 } 1314 } 1315 1316 pwqeq->vport = vport; 1317 return 0; 1318 } 1319 1320 1321 /** 1322 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO 1323 * @vport: pointer to a host virtual N_Port data structure 1324 * @lpfc_ncmd: Pointer to lpfc scsi command 1325 * 1326 * Driver registers this routine as it io request handler. This 1327 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1328 * data structure to the rport indicated in @lpfc_nvme_rport. 1329 * 1330 * Return value : 1331 * 0 - Success 1332 * TODO: What are the failure codes. 1333 **/ 1334 static int 1335 lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, 1336 struct lpfc_io_buf *lpfc_ncmd) 1337 { 1338 struct lpfc_hba *phba = vport->phba; 1339 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1340 union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe; 1341 struct sli4_sge *sgl = lpfc_ncmd->dma_sgl; 1342 struct sli4_hybrid_sgl *sgl_xtra = NULL; 1343 struct scatterlist *data_sg; 1344 struct sli4_sge *first_data_sgl; 1345 struct ulp_bde64 *bde; 1346 dma_addr_t physaddr = 0; 1347 uint32_t dma_len = 0; 1348 uint32_t dma_offset = 0; 1349 int nseg, i, j; 1350 bool lsp_just_set = false; 1351 1352 /* Fix up the command and response DMA stuff. */ 1353 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); 1354 1355 /* 1356 * There are three possibilities here - use scatter-gather segment, use 1357 * the single mapping, or neither. 1358 */ 1359 if (nCmd->sg_cnt) { 1360 /* 1361 * Jump over the cmd and rsp SGEs. The fix routine 1362 * has already adjusted for this. 1363 */ 1364 sgl += 2; 1365 1366 first_data_sgl = sgl; 1367 lpfc_ncmd->seg_cnt = nCmd->sg_cnt; 1368 if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) { 1369 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1370 "6058 Too many sg segments from " 1371 "NVME Transport. Max %d, " 1372 "nvmeIO sg_cnt %d\n", 1373 phba->cfg_nvme_seg_cnt + 1, 1374 lpfc_ncmd->seg_cnt); 1375 lpfc_ncmd->seg_cnt = 0; 1376 return 1; 1377 } 1378 1379 /* 1380 * The driver established a maximum scatter-gather segment count 1381 * during probe that limits the number of sg elements in any 1382 * single nvme command. Just run through the seg_cnt and format 1383 * the sge's. 1384 */ 1385 nseg = nCmd->sg_cnt; 1386 data_sg = nCmd->first_sgl; 1387 1388 /* for tracking the segment boundaries */ 1389 j = 2; 1390 for (i = 0; i < nseg; i++) { 1391 if (data_sg == NULL) { 1392 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1393 "6059 dptr err %d, nseg %d\n", 1394 i, nseg); 1395 lpfc_ncmd->seg_cnt = 0; 1396 return 1; 1397 } 1398 1399 sgl->word2 = 0; 1400 if (nseg == 1) { 1401 bf_set(lpfc_sli4_sge_last, sgl, 1); 1402 bf_set(lpfc_sli4_sge_type, sgl, 1403 LPFC_SGE_TYPE_DATA); 1404 } else { 1405 bf_set(lpfc_sli4_sge_last, sgl, 0); 1406 1407 /* expand the segment */ 1408 if (!lsp_just_set && 1409 !((j + 1) % phba->border_sge_num) && 1410 ((nseg - 1) != i)) { 1411 /* set LSP type */ 1412 bf_set(lpfc_sli4_sge_type, sgl, 1413 LPFC_SGE_TYPE_LSP); 1414 1415 sgl_xtra = lpfc_get_sgl_per_hdwq( 1416 phba, lpfc_ncmd); 1417 1418 if (unlikely(!sgl_xtra)) { 1419 lpfc_ncmd->seg_cnt = 0; 1420 return 1; 1421 } 1422 sgl->addr_lo = cpu_to_le32(putPaddrLow( 1423 sgl_xtra->dma_phys_sgl)); 1424 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 1425 sgl_xtra->dma_phys_sgl)); 1426 1427 } else { 1428 bf_set(lpfc_sli4_sge_type, sgl, 1429 LPFC_SGE_TYPE_DATA); 1430 } 1431 } 1432 1433 if (!(bf_get(lpfc_sli4_sge_type, sgl) & 1434 LPFC_SGE_TYPE_LSP)) { 1435 if ((nseg - 1) == i) 1436 bf_set(lpfc_sli4_sge_last, sgl, 1); 1437 1438 physaddr = sg_dma_address(data_sg); 1439 dma_len = sg_dma_len(data_sg); 1440 sgl->addr_lo = cpu_to_le32( 1441 putPaddrLow(physaddr)); 1442 sgl->addr_hi = cpu_to_le32( 1443 putPaddrHigh(physaddr)); 1444 1445 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 1446 sgl->word2 = cpu_to_le32(sgl->word2); 1447 sgl->sge_len = cpu_to_le32(dma_len); 1448 1449 dma_offset += dma_len; 1450 data_sg = sg_next(data_sg); 1451 1452 sgl++; 1453 1454 lsp_just_set = false; 1455 } else { 1456 sgl->word2 = cpu_to_le32(sgl->word2); 1457 1458 sgl->sge_len = cpu_to_le32( 1459 phba->cfg_sg_dma_buf_size); 1460 1461 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 1462 i = i - 1; 1463 1464 lsp_just_set = true; 1465 } 1466 1467 j++; 1468 } 1469 1470 /* PBDE support for first data SGE only */ 1471 if (nseg == 1 && phba->cfg_enable_pbde) { 1472 /* Words 13-15 */ 1473 bde = (struct ulp_bde64 *) 1474 &wqe->words[13]; 1475 bde->addrLow = first_data_sgl->addr_lo; 1476 bde->addrHigh = first_data_sgl->addr_hi; 1477 bde->tus.f.bdeSize = 1478 le32_to_cpu(first_data_sgl->sge_len); 1479 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1480 bde->tus.w = cpu_to_le32(bde->tus.w); 1481 1482 /* Word 11 - set PBDE bit */ 1483 bf_set(wqe_pbde, &wqe->generic.wqe_com, 1); 1484 } else { 1485 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 1486 /* Word 11 - PBDE bit disabled by default template */ 1487 } 1488 1489 } else { 1490 lpfc_ncmd->seg_cnt = 0; 1491 1492 /* For this clause to be valid, the payload_length 1493 * and sg_cnt must zero. 1494 */ 1495 if (nCmd->payload_length != 0) { 1496 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1497 "6063 NVME DMA Prep Err: sg_cnt %d " 1498 "payload_length x%x\n", 1499 nCmd->sg_cnt, nCmd->payload_length); 1500 return 1; 1501 } 1502 } 1503 return 0; 1504 } 1505 1506 /** 1507 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO 1508 * @pnvme_lport: Pointer to the driver's local port data 1509 * @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1510 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1511 * @pnvme_fcreq: IO request from nvme fc to driver. 1512 * 1513 * Driver registers this routine as it io request handler. This 1514 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1515 * data structure to the rport indicated in @lpfc_nvme_rport. 1516 * 1517 * Return value : 1518 * 0 - Success 1519 * TODO: What are the failure codes. 1520 **/ 1521 static int 1522 lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, 1523 struct nvme_fc_remote_port *pnvme_rport, 1524 void *hw_queue_handle, 1525 struct nvmefc_fcp_req *pnvme_fcreq) 1526 { 1527 int ret = 0; 1528 int expedite = 0; 1529 int idx, cpu; 1530 struct lpfc_nvme_lport *lport; 1531 struct lpfc_fc4_ctrl_stat *cstat; 1532 struct lpfc_vport *vport; 1533 struct lpfc_hba *phba; 1534 struct lpfc_nodelist *ndlp; 1535 struct lpfc_io_buf *lpfc_ncmd; 1536 struct lpfc_nvme_rport *rport; 1537 struct lpfc_nvme_qhandle *lpfc_queue_info; 1538 struct lpfc_nvme_fcpreq_priv *freqpriv; 1539 struct nvme_common_command *sqe; 1540 uint64_t start = 0; 1541 #if (IS_ENABLED(CONFIG_NVME_FC)) 1542 u8 *uuid = NULL; 1543 int err; 1544 enum dma_data_direction iodir; 1545 #endif 1546 1547 /* Validate pointers. LLDD fault handling with transport does 1548 * have timing races. 1549 */ 1550 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1551 if (unlikely(!lport)) { 1552 ret = -EINVAL; 1553 goto out_fail; 1554 } 1555 1556 vport = lport->vport; 1557 1558 if (unlikely(!hw_queue_handle)) { 1559 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1560 "6117 Fail IO, NULL hw_queue_handle\n"); 1561 atomic_inc(&lport->xmt_fcp_err); 1562 ret = -EBUSY; 1563 goto out_fail; 1564 } 1565 1566 phba = vport->phba; 1567 1568 if ((unlikely(vport->load_flag & FC_UNLOADING)) || 1569 phba->hba_flag & HBA_IOQ_FLUSH) { 1570 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1571 "6124 Fail IO, Driver unload\n"); 1572 atomic_inc(&lport->xmt_fcp_err); 1573 ret = -ENODEV; 1574 goto out_fail; 1575 } 1576 1577 freqpriv = pnvme_fcreq->private; 1578 if (unlikely(!freqpriv)) { 1579 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1580 "6158 Fail IO, NULL request data\n"); 1581 atomic_inc(&lport->xmt_fcp_err); 1582 ret = -EINVAL; 1583 goto out_fail; 1584 } 1585 1586 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1587 if (phba->ktime_on) 1588 start = ktime_get_ns(); 1589 #endif 1590 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 1591 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; 1592 1593 /* 1594 * Catch race where our node has transitioned, but the 1595 * transport is still transitioning. 1596 */ 1597 ndlp = rport->ndlp; 1598 if (!ndlp) { 1599 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1600 "6053 Busy IO, ndlp not ready: rport x%px " 1601 "ndlp x%px, DID x%06x\n", 1602 rport, ndlp, pnvme_rport->port_id); 1603 atomic_inc(&lport->xmt_fcp_err); 1604 ret = -EBUSY; 1605 goto out_fail; 1606 } 1607 1608 /* The remote node has to be a mapped target or it's an error. */ 1609 if ((ndlp->nlp_type & NLP_NVME_TARGET) && 1610 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 1611 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1612 "6036 Fail IO, DID x%06x not ready for " 1613 "IO. State x%x, Type x%x Flg x%x\n", 1614 pnvme_rport->port_id, 1615 ndlp->nlp_state, ndlp->nlp_type, 1616 ndlp->fc4_xpt_flags); 1617 atomic_inc(&lport->xmt_fcp_bad_ndlp); 1618 ret = -EBUSY; 1619 goto out_fail; 1620 1621 } 1622 1623 /* Currently only NVME Keep alive commands should be expedited 1624 * if the driver runs out of a resource. These should only be 1625 * issued on the admin queue, qidx 0 1626 */ 1627 if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) { 1628 sqe = &((struct nvme_fc_cmd_iu *) 1629 pnvme_fcreq->cmdaddr)->sqe.common; 1630 if (sqe->opcode == nvme_admin_keep_alive) 1631 expedite = 1; 1632 } 1633 1634 /* Check if IO qualifies for CMF */ 1635 if (phba->cmf_active_mode != LPFC_CFG_OFF && 1636 pnvme_fcreq->io_dir == NVMEFC_FCP_READ && 1637 pnvme_fcreq->payload_length) { 1638 ret = lpfc_update_cmf_cmd(phba, pnvme_fcreq->payload_length); 1639 if (ret) { 1640 ret = -EBUSY; 1641 goto out_fail; 1642 } 1643 /* Get start time for IO latency */ 1644 start = ktime_get_ns(); 1645 } 1646 1647 /* The node is shared with FCP IO, make sure the IO pending count does 1648 * not exceed the programmed depth. 1649 */ 1650 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 1651 if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) && 1652 !expedite) { 1653 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1654 "6174 Fail IO, ndlp qdepth exceeded: " 1655 "idx %d DID %x pend %d qdepth %d\n", 1656 lpfc_queue_info->index, ndlp->nlp_DID, 1657 atomic_read(&ndlp->cmd_pending), 1658 ndlp->cmd_qdepth); 1659 atomic_inc(&lport->xmt_fcp_qdepth); 1660 ret = -EBUSY; 1661 goto out_fail1; 1662 } 1663 } 1664 1665 /* Lookup Hardware Queue index based on fcp_io_sched module parameter */ 1666 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) { 1667 idx = lpfc_queue_info->index; 1668 } else { 1669 cpu = raw_smp_processor_id(); 1670 idx = phba->sli4_hba.cpu_map[cpu].hdwq; 1671 } 1672 1673 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, idx, expedite); 1674 if (lpfc_ncmd == NULL) { 1675 atomic_inc(&lport->xmt_fcp_noxri); 1676 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1677 "6065 Fail IO, driver buffer pool is empty: " 1678 "idx %d DID %x\n", 1679 lpfc_queue_info->index, ndlp->nlp_DID); 1680 ret = -EBUSY; 1681 goto out_fail1; 1682 } 1683 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1684 if (start) { 1685 lpfc_ncmd->ts_cmd_start = start; 1686 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; 1687 } else { 1688 lpfc_ncmd->ts_cmd_start = 0; 1689 } 1690 #endif 1691 lpfc_ncmd->rx_cmd_start = start; 1692 1693 /* 1694 * Store the data needed by the driver to issue, abort, and complete 1695 * an IO. 1696 * Do not let the IO hang out forever. There is no midlayer issuing 1697 * an abort so inform the FW of the maximum IO pending time. 1698 */ 1699 freqpriv->nvme_buf = lpfc_ncmd; 1700 lpfc_ncmd->nvmeCmd = pnvme_fcreq; 1701 lpfc_ncmd->ndlp = ndlp; 1702 lpfc_ncmd->qidx = lpfc_queue_info->qidx; 1703 1704 #if (IS_ENABLED(CONFIG_NVME_FC)) 1705 /* check the necessary and sufficient condition to support VMID */ 1706 if (lpfc_is_vmid_enabled(phba) && 1707 (ndlp->vmid_support || 1708 phba->pport->vmid_priority_tagging == 1709 LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { 1710 /* is the I/O generated by a VM, get the associated virtual */ 1711 /* entity id */ 1712 uuid = nvme_fc_io_getuuid(pnvme_fcreq); 1713 1714 if (uuid) { 1715 if (pnvme_fcreq->io_dir == NVMEFC_FCP_WRITE) 1716 iodir = DMA_TO_DEVICE; 1717 else if (pnvme_fcreq->io_dir == NVMEFC_FCP_READ) 1718 iodir = DMA_FROM_DEVICE; 1719 else 1720 iodir = DMA_NONE; 1721 1722 err = lpfc_vmid_get_appid(vport, uuid, iodir, 1723 (union lpfc_vmid_io_tag *) 1724 &lpfc_ncmd->cur_iocbq.vmid_tag); 1725 if (!err) 1726 lpfc_ncmd->cur_iocbq.cmd_flag |= LPFC_IO_VMID; 1727 } 1728 } 1729 #endif 1730 1731 /* 1732 * Issue the IO on the WQ indicated by index in the hw_queue_handle. 1733 * This identfier was create in our hardware queue create callback 1734 * routine. The driver now is dependent on the IO queue steering from 1735 * the transport. We are trusting the upper NVME layers know which 1736 * index to use and that they have affinitized a CPU to this hardware 1737 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. 1738 */ 1739 lpfc_ncmd->cur_iocbq.hba_wqidx = idx; 1740 cstat = &phba->sli4_hba.hdwq[idx].nvme_cstat; 1741 1742 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat); 1743 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); 1744 if (ret) { 1745 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1746 "6175 Fail IO, Prep DMA: " 1747 "idx %d DID %x\n", 1748 lpfc_queue_info->index, ndlp->nlp_DID); 1749 atomic_inc(&lport->xmt_fcp_err); 1750 ret = -ENOMEM; 1751 goto out_free_nvme_buf; 1752 } 1753 1754 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n", 1755 lpfc_ncmd->cur_iocbq.sli4_xritag, 1756 lpfc_queue_info->index, ndlp->nlp_DID); 1757 1758 ret = lpfc_sli4_issue_wqe(phba, lpfc_ncmd->hdwq, &lpfc_ncmd->cur_iocbq); 1759 if (ret) { 1760 atomic_inc(&lport->xmt_fcp_wqerr); 1761 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1762 "6113 Fail IO, Could not issue WQE err %x " 1763 "sid: x%x did: x%x oxid: x%x\n", 1764 ret, vport->fc_myDID, ndlp->nlp_DID, 1765 lpfc_ncmd->cur_iocbq.sli4_xritag); 1766 goto out_free_nvme_buf; 1767 } 1768 1769 if (phba->cfg_xri_rebalancing) 1770 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_ncmd->hdwq_no); 1771 1772 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1773 if (lpfc_ncmd->ts_cmd_start) 1774 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); 1775 1776 if (phba->hdwqstat_on & LPFC_CHECK_NVME_IO) { 1777 cpu = raw_smp_processor_id(); 1778 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 1779 lpfc_ncmd->cpu = cpu; 1780 if (idx != cpu) 1781 lpfc_printf_vlog(vport, 1782 KERN_INFO, LOG_NVME_IOERR, 1783 "6702 CPU Check cmd: " 1784 "cpu %d wq %d\n", 1785 lpfc_ncmd->cpu, 1786 lpfc_queue_info->index); 1787 } 1788 #endif 1789 return 0; 1790 1791 out_free_nvme_buf: 1792 if (lpfc_ncmd->nvmeCmd->sg_cnt) { 1793 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE) 1794 cstat->output_requests--; 1795 else 1796 cstat->input_requests--; 1797 } else 1798 cstat->control_requests--; 1799 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1800 out_fail1: 1801 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, 1802 pnvme_fcreq->payload_length, NULL); 1803 out_fail: 1804 return ret; 1805 } 1806 1807 /** 1808 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. 1809 * @phba: Pointer to HBA context object 1810 * @cmdiocb: Pointer to command iocb object. 1811 * @rspiocb: Pointer to response iocb object. 1812 * 1813 * This is the callback function for any NVME FCP IO that was aborted. 1814 * 1815 * Return value: 1816 * None 1817 **/ 1818 void 1819 lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1820 struct lpfc_iocbq *rspiocb) 1821 { 1822 struct lpfc_wcqe_complete *abts_cmpl = &rspiocb->wcqe_cmpl; 1823 1824 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1825 "6145 ABORT_XRI_CN completing on rpi x%x " 1826 "original iotag x%x, abort cmd iotag x%x " 1827 "req_tag x%x, status x%x, hwstatus x%x\n", 1828 bf_get(wqe_ctxt_tag, &cmdiocb->wqe.generic.wqe_com), 1829 get_job_abtsiotag(phba, cmdiocb), cmdiocb->iotag, 1830 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), 1831 bf_get(lpfc_wcqe_c_status, abts_cmpl), 1832 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); 1833 lpfc_sli_release_iocbq(phba, cmdiocb); 1834 } 1835 1836 /** 1837 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS 1838 * @pnvme_lport: Pointer to the driver's local port data 1839 * @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1840 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1841 * @pnvme_fcreq: IO request from nvme fc to driver. 1842 * 1843 * Driver registers this routine as its nvme request io abort handler. This 1844 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq 1845 * data structure to the rport indicated in @lpfc_nvme_rport. This routine 1846 * is executed asynchronously - one the target is validated as "MAPPED" and 1847 * ready for IO, the driver issues the abort request and returns. 1848 * 1849 * Return value: 1850 * None 1851 **/ 1852 static void 1853 lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, 1854 struct nvme_fc_remote_port *pnvme_rport, 1855 void *hw_queue_handle, 1856 struct nvmefc_fcp_req *pnvme_fcreq) 1857 { 1858 struct lpfc_nvme_lport *lport; 1859 struct lpfc_vport *vport; 1860 struct lpfc_hba *phba; 1861 struct lpfc_io_buf *lpfc_nbuf; 1862 struct lpfc_iocbq *nvmereq_wqe; 1863 struct lpfc_nvme_fcpreq_priv *freqpriv; 1864 unsigned long flags; 1865 int ret_val; 1866 1867 /* Validate pointers. LLDD fault handling with transport does 1868 * have timing races. 1869 */ 1870 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1871 if (unlikely(!lport)) 1872 return; 1873 1874 vport = lport->vport; 1875 1876 if (unlikely(!hw_queue_handle)) { 1877 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1878 "6129 Fail Abort, HW Queue Handle NULL.\n"); 1879 return; 1880 } 1881 1882 phba = vport->phba; 1883 freqpriv = pnvme_fcreq->private; 1884 1885 if (unlikely(!freqpriv)) 1886 return; 1887 if (vport->load_flag & FC_UNLOADING) 1888 return; 1889 1890 /* Announce entry to new IO submit field. */ 1891 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1892 "6002 Abort Request to rport DID x%06x " 1893 "for nvme_fc_req x%px\n", 1894 pnvme_rport->port_id, 1895 pnvme_fcreq); 1896 1897 lpfc_nbuf = freqpriv->nvme_buf; 1898 if (!lpfc_nbuf) { 1899 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1900 "6140 NVME IO req has no matching lpfc nvme " 1901 "io buffer. Skipping abort req.\n"); 1902 return; 1903 } else if (!lpfc_nbuf->nvmeCmd) { 1904 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1905 "6141 lpfc NVME IO req has no nvme_fcreq " 1906 "io buffer. Skipping abort req.\n"); 1907 return; 1908 } 1909 1910 /* Guard against IO completion being called at same time */ 1911 spin_lock_irqsave(&lpfc_nbuf->buf_lock, flags); 1912 1913 /* If the hba is getting reset, this flag is set. It is 1914 * cleared when the reset is complete and rings reestablished. 1915 */ 1916 spin_lock(&phba->hbalock); 1917 /* driver queued commands are in process of being flushed */ 1918 if (phba->hba_flag & HBA_IOQ_FLUSH) { 1919 spin_unlock(&phba->hbalock); 1920 spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); 1921 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1922 "6139 Driver in reset cleanup - flushing " 1923 "NVME Req now. hba_flag x%x\n", 1924 phba->hba_flag); 1925 return; 1926 } 1927 1928 nvmereq_wqe = &lpfc_nbuf->cur_iocbq; 1929 1930 /* 1931 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's 1932 * state must match the nvme_fcreq passed by the nvme 1933 * transport. If they don't match, it is likely the driver 1934 * has already completed the NVME IO and the nvme transport 1935 * has not seen it yet. 1936 */ 1937 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { 1938 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1939 "6143 NVME req mismatch: " 1940 "lpfc_nbuf x%px nvmeCmd x%px, " 1941 "pnvme_fcreq x%px. Skipping Abort xri x%x\n", 1942 lpfc_nbuf, lpfc_nbuf->nvmeCmd, 1943 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1944 goto out_unlock; 1945 } 1946 1947 /* Don't abort IOs no longer on the pending queue. */ 1948 if (!(nvmereq_wqe->cmd_flag & LPFC_IO_ON_TXCMPLQ)) { 1949 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1950 "6142 NVME IO req x%px not queued - skipping " 1951 "abort req xri x%x\n", 1952 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1953 goto out_unlock; 1954 } 1955 1956 atomic_inc(&lport->xmt_fcp_abort); 1957 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n", 1958 nvmereq_wqe->sli4_xritag, 1959 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id); 1960 1961 /* Outstanding abort is in progress */ 1962 if (nvmereq_wqe->cmd_flag & LPFC_DRIVER_ABORTED) { 1963 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1964 "6144 Outstanding NVME I/O Abort Request " 1965 "still pending on nvme_fcreq x%px, " 1966 "lpfc_ncmd x%px xri x%x\n", 1967 pnvme_fcreq, lpfc_nbuf, 1968 nvmereq_wqe->sli4_xritag); 1969 goto out_unlock; 1970 } 1971 1972 ret_val = lpfc_sli4_issue_abort_iotag(phba, nvmereq_wqe, 1973 lpfc_nvme_abort_fcreq_cmpl); 1974 1975 spin_unlock(&phba->hbalock); 1976 spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); 1977 1978 /* Make sure HBA is alive */ 1979 lpfc_issue_hb_tmo(phba); 1980 1981 if (ret_val != WQE_SUCCESS) { 1982 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1983 "6137 Failed abts issue_wqe with status x%x " 1984 "for nvme_fcreq x%px.\n", 1985 ret_val, pnvme_fcreq); 1986 return; 1987 } 1988 1989 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1990 "6138 Transport Abort NVME Request Issued for " 1991 "ox_id x%x\n", 1992 nvmereq_wqe->sli4_xritag); 1993 return; 1994 1995 out_unlock: 1996 spin_unlock(&phba->hbalock); 1997 spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); 1998 return; 1999 } 2000 2001 /* Declare and initialization an instance of the FC NVME template. */ 2002 static struct nvme_fc_port_template lpfc_nvme_template = { 2003 /* initiator-based functions */ 2004 .localport_delete = lpfc_nvme_localport_delete, 2005 .remoteport_delete = lpfc_nvme_remoteport_delete, 2006 .create_queue = lpfc_nvme_create_queue, 2007 .delete_queue = lpfc_nvme_delete_queue, 2008 .ls_req = lpfc_nvme_ls_req, 2009 .fcp_io = lpfc_nvme_fcp_io_submit, 2010 .ls_abort = lpfc_nvme_ls_abort, 2011 .fcp_abort = lpfc_nvme_fcp_abort, 2012 .xmt_ls_rsp = lpfc_nvme_xmt_ls_rsp, 2013 2014 .max_hw_queues = 1, 2015 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 2016 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 2017 .dma_boundary = 0xFFFFFFFF, 2018 2019 /* Sizes of additional private data for data structures. 2020 * No use for the last two sizes at this time. 2021 */ 2022 .local_priv_sz = sizeof(struct lpfc_nvme_lport), 2023 .remote_priv_sz = sizeof(struct lpfc_nvme_rport), 2024 .lsrqst_priv_sz = 0, 2025 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv), 2026 }; 2027 2028 /* 2029 * lpfc_get_nvme_buf - Get a nvme buffer from io_buf_list of the HBA 2030 * 2031 * This routine removes a nvme buffer from head of @hdwq io_buf_list 2032 * and returns to caller. 2033 * 2034 * Return codes: 2035 * NULL - Error 2036 * Pointer to lpfc_nvme_buf - Success 2037 **/ 2038 static struct lpfc_io_buf * 2039 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 2040 int idx, int expedite) 2041 { 2042 struct lpfc_io_buf *lpfc_ncmd; 2043 struct lpfc_sli4_hdw_queue *qp; 2044 struct sli4_sge *sgl; 2045 struct lpfc_iocbq *pwqeq; 2046 union lpfc_wqe128 *wqe; 2047 2048 lpfc_ncmd = lpfc_get_io_buf(phba, NULL, idx, expedite); 2049 2050 if (lpfc_ncmd) { 2051 pwqeq = &(lpfc_ncmd->cur_iocbq); 2052 wqe = &pwqeq->wqe; 2053 2054 /* Setup key fields in buffer that may have been changed 2055 * if other protocols used this buffer. 2056 */ 2057 pwqeq->cmd_flag = LPFC_IO_NVME; 2058 pwqeq->cmd_cmpl = lpfc_nvme_io_cmd_cmpl; 2059 lpfc_ncmd->start_time = jiffies; 2060 lpfc_ncmd->flags = 0; 2061 2062 /* Rsp SGE will be filled in when we rcv an IO 2063 * from the NVME Layer to be sent. 2064 * The cmd is going to be embedded so we need a SKIP SGE. 2065 */ 2066 sgl = lpfc_ncmd->dma_sgl; 2067 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2068 bf_set(lpfc_sli4_sge_last, sgl, 0); 2069 sgl->word2 = cpu_to_le32(sgl->word2); 2070 /* Fill in word 3 / sgl_len during cmd submission */ 2071 2072 /* Initialize 64 bytes only */ 2073 memset(wqe, 0, sizeof(union lpfc_wqe)); 2074 2075 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 2076 atomic_inc(&ndlp->cmd_pending); 2077 lpfc_ncmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 2078 } 2079 2080 } else { 2081 qp = &phba->sli4_hba.hdwq[idx]; 2082 qp->empty_io_bufs++; 2083 } 2084 2085 return lpfc_ncmd; 2086 } 2087 2088 /** 2089 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. 2090 * @phba: The Hba for which this call is being executed. 2091 * @lpfc_ncmd: The nvme buffer which is being released. 2092 * 2093 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba 2094 * lpfc_io_buf_list list. For SLI4 XRI's are tied to the nvme buffer 2095 * and cannot be reused for at least RA_TOV amount of time if it was 2096 * aborted. 2097 **/ 2098 static void 2099 lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd) 2100 { 2101 struct lpfc_sli4_hdw_queue *qp; 2102 unsigned long iflag = 0; 2103 2104 if ((lpfc_ncmd->flags & LPFC_SBUF_BUMP_QDEPTH) && lpfc_ncmd->ndlp) 2105 atomic_dec(&lpfc_ncmd->ndlp->cmd_pending); 2106 2107 lpfc_ncmd->ndlp = NULL; 2108 lpfc_ncmd->flags &= ~LPFC_SBUF_BUMP_QDEPTH; 2109 2110 qp = lpfc_ncmd->hdwq; 2111 if (unlikely(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 2112 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2113 "6310 XB release deferred for " 2114 "ox_id x%x on reqtag x%x\n", 2115 lpfc_ncmd->cur_iocbq.sli4_xritag, 2116 lpfc_ncmd->cur_iocbq.iotag); 2117 2118 spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag); 2119 list_add_tail(&lpfc_ncmd->list, 2120 &qp->lpfc_abts_io_buf_list); 2121 qp->abts_nvme_io_bufs++; 2122 spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag); 2123 } else 2124 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)lpfc_ncmd, qp); 2125 } 2126 2127 /** 2128 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. 2129 * @vport: the lpfc_vport instance requesting a localport. 2130 * 2131 * This routine is invoked to create an nvme localport instance to bind 2132 * to the nvme_fc_transport. It is called once during driver load 2133 * like lpfc_create_shost after all other services are initialized. 2134 * It requires a vport, vpi, and wwns at call time. Other localport 2135 * parameters are modified as the driver's FCID and the Fabric WWN 2136 * are established. 2137 * 2138 * Return codes 2139 * 0 - successful 2140 * -ENOMEM - no heap memory available 2141 * other values - from nvme registration upcall 2142 **/ 2143 int 2144 lpfc_nvme_create_localport(struct lpfc_vport *vport) 2145 { 2146 int ret = 0; 2147 struct lpfc_hba *phba = vport->phba; 2148 struct nvme_fc_port_info nfcp_info; 2149 struct nvme_fc_local_port *localport; 2150 struct lpfc_nvme_lport *lport; 2151 2152 /* Initialize this localport instance. The vport wwn usage ensures 2153 * that NPIV is accounted for. 2154 */ 2155 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); 2156 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; 2157 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 2158 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 2159 2160 /* We need to tell the transport layer + 1 because it takes page 2161 * alignment into account. When space for the SGL is allocated we 2162 * allocate + 3, one for cmd, one for rsp and one for this alignment 2163 */ 2164 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 2165 2166 /* Advertise how many hw queues we support based on cfg_hdw_queue, 2167 * which will not exceed cpu count. 2168 */ 2169 lpfc_nvme_template.max_hw_queues = phba->cfg_hdw_queue; 2170 2171 if (!IS_ENABLED(CONFIG_NVME_FC)) 2172 return ret; 2173 2174 /* localport is allocated from the stack, but the registration 2175 * call allocates heap memory as well as the private area. 2176 */ 2177 2178 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, 2179 &vport->phba->pcidev->dev, &localport); 2180 if (!ret) { 2181 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, 2182 "6005 Successfully registered local " 2183 "NVME port num %d, localP x%px, private " 2184 "x%px, sg_seg %d\n", 2185 localport->port_num, localport, 2186 localport->private, 2187 lpfc_nvme_template.max_sgl_segments); 2188 2189 /* Private is our lport size declared in the template. */ 2190 lport = (struct lpfc_nvme_lport *)localport->private; 2191 vport->localport = localport; 2192 lport->vport = vport; 2193 vport->nvmei_support = 1; 2194 2195 atomic_set(&lport->xmt_fcp_noxri, 0); 2196 atomic_set(&lport->xmt_fcp_bad_ndlp, 0); 2197 atomic_set(&lport->xmt_fcp_qdepth, 0); 2198 atomic_set(&lport->xmt_fcp_err, 0); 2199 atomic_set(&lport->xmt_fcp_wqerr, 0); 2200 atomic_set(&lport->xmt_fcp_abort, 0); 2201 atomic_set(&lport->xmt_ls_abort, 0); 2202 atomic_set(&lport->xmt_ls_err, 0); 2203 atomic_set(&lport->cmpl_fcp_xb, 0); 2204 atomic_set(&lport->cmpl_fcp_err, 0); 2205 atomic_set(&lport->cmpl_ls_xb, 0); 2206 atomic_set(&lport->cmpl_ls_err, 0); 2207 2208 atomic_set(&lport->fc4NvmeLsRequests, 0); 2209 atomic_set(&lport->fc4NvmeLsCmpls, 0); 2210 } 2211 2212 return ret; 2213 } 2214 2215 #if (IS_ENABLED(CONFIG_NVME_FC)) 2216 /* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg. 2217 * 2218 * The driver has to wait for the host nvme transport to callback 2219 * indicating the localport has successfully unregistered all 2220 * resources. Since this is an uninterruptible wait, loop every ten 2221 * seconds and print a message indicating no progress. 2222 * 2223 * An uninterruptible wait is used because of the risk of transport-to- 2224 * driver state mismatch. 2225 */ 2226 static void 2227 lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport, 2228 struct lpfc_nvme_lport *lport, 2229 struct completion *lport_unreg_cmp) 2230 { 2231 u32 wait_tmo; 2232 int ret, i, pending = 0; 2233 struct lpfc_sli_ring *pring; 2234 struct lpfc_hba *phba = vport->phba; 2235 struct lpfc_sli4_hdw_queue *qp; 2236 int abts_scsi, abts_nvme; 2237 2238 /* Host transport has to clean up and confirm requiring an indefinite 2239 * wait. Print a message if a 10 second wait expires and renew the 2240 * wait. This is unexpected. 2241 */ 2242 wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); 2243 while (true) { 2244 ret = wait_for_completion_timeout(lport_unreg_cmp, wait_tmo); 2245 if (unlikely(!ret)) { 2246 pending = 0; 2247 abts_scsi = 0; 2248 abts_nvme = 0; 2249 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2250 qp = &phba->sli4_hba.hdwq[i]; 2251 if (!vport->localport || !qp || !qp->io_wq) 2252 return; 2253 2254 pring = qp->io_wq->pring; 2255 if (!pring) 2256 continue; 2257 pending += pring->txcmplq_cnt; 2258 abts_scsi += qp->abts_scsi_io_bufs; 2259 abts_nvme += qp->abts_nvme_io_bufs; 2260 } 2261 if (!vport->localport || 2262 test_bit(HBA_PCI_ERR, &vport->phba->bit_flags) || 2263 phba->link_state == LPFC_HBA_ERROR || 2264 vport->load_flag & FC_UNLOADING) 2265 return; 2266 2267 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2268 "6176 Lport x%px Localport x%px wait " 2269 "timed out. Pending %d [%d:%d]. " 2270 "Renewing.\n", 2271 lport, vport->localport, pending, 2272 abts_scsi, abts_nvme); 2273 continue; 2274 } 2275 break; 2276 } 2277 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 2278 "6177 Lport x%px Localport x%px Complete Success\n", 2279 lport, vport->localport); 2280 } 2281 #endif 2282 2283 /** 2284 * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport. 2285 * @vport: pointer to a host virtual N_Port data structure 2286 * 2287 * This routine is invoked to destroy all lports bound to the phba. 2288 * The lport memory was allocated by the nvme fc transport and is 2289 * released there. This routine ensures all rports bound to the 2290 * lport have been disconnected. 2291 * 2292 **/ 2293 void 2294 lpfc_nvme_destroy_localport(struct lpfc_vport *vport) 2295 { 2296 #if (IS_ENABLED(CONFIG_NVME_FC)) 2297 struct nvme_fc_local_port *localport; 2298 struct lpfc_nvme_lport *lport; 2299 int ret; 2300 DECLARE_COMPLETION_ONSTACK(lport_unreg_cmp); 2301 2302 if (vport->nvmei_support == 0) 2303 return; 2304 2305 localport = vport->localport; 2306 if (!localport) 2307 return; 2308 lport = (struct lpfc_nvme_lport *)localport->private; 2309 2310 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2311 "6011 Destroying NVME localport x%px\n", 2312 localport); 2313 2314 /* lport's rport list is clear. Unregister 2315 * lport and release resources. 2316 */ 2317 lport->lport_unreg_cmp = &lport_unreg_cmp; 2318 ret = nvme_fc_unregister_localport(localport); 2319 2320 /* Wait for completion. This either blocks 2321 * indefinitely or succeeds 2322 */ 2323 lpfc_nvme_lport_unreg_wait(vport, lport, &lport_unreg_cmp); 2324 vport->localport = NULL; 2325 2326 /* Regardless of the unregister upcall response, clear 2327 * nvmei_support. All rports are unregistered and the 2328 * driver will clean up. 2329 */ 2330 vport->nvmei_support = 0; 2331 if (ret == 0) { 2332 lpfc_printf_vlog(vport, 2333 KERN_INFO, LOG_NVME_DISC, 2334 "6009 Unregistered lport Success\n"); 2335 } else { 2336 lpfc_printf_vlog(vport, 2337 KERN_INFO, LOG_NVME_DISC, 2338 "6010 Unregistered lport " 2339 "Failed, status x%x\n", 2340 ret); 2341 } 2342 #endif 2343 } 2344 2345 void 2346 lpfc_nvme_update_localport(struct lpfc_vport *vport) 2347 { 2348 #if (IS_ENABLED(CONFIG_NVME_FC)) 2349 struct nvme_fc_local_port *localport; 2350 struct lpfc_nvme_lport *lport; 2351 2352 localport = vport->localport; 2353 if (!localport) { 2354 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2355 "6710 Update NVME fail. No localport\n"); 2356 return; 2357 } 2358 lport = (struct lpfc_nvme_lport *)localport->private; 2359 if (!lport) { 2360 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2361 "6171 Update NVME fail. localP x%px, No lport\n", 2362 localport); 2363 return; 2364 } 2365 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2366 "6012 Update NVME lport x%px did x%x\n", 2367 localport, vport->fc_myDID); 2368 2369 localport->port_id = vport->fc_myDID; 2370 if (localport->port_id == 0) 2371 localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY; 2372 else 2373 localport->port_role = FC_PORT_ROLE_NVME_INITIATOR; 2374 2375 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2376 "6030 bound lport x%px to DID x%06x\n", 2377 lport, localport->port_id); 2378 #endif 2379 } 2380 2381 int 2382 lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2383 { 2384 #if (IS_ENABLED(CONFIG_NVME_FC)) 2385 int ret = 0; 2386 struct nvme_fc_local_port *localport; 2387 struct lpfc_nvme_lport *lport; 2388 struct lpfc_nvme_rport *rport; 2389 struct lpfc_nvme_rport *oldrport; 2390 struct nvme_fc_remote_port *remote_port; 2391 struct nvme_fc_port_info rpinfo; 2392 struct lpfc_nodelist *prev_ndlp = NULL; 2393 struct fc_rport *srport = ndlp->rport; 2394 2395 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, 2396 "6006 Register NVME PORT. DID x%06x nlptype x%x\n", 2397 ndlp->nlp_DID, ndlp->nlp_type); 2398 2399 localport = vport->localport; 2400 if (!localport) 2401 return 0; 2402 2403 lport = (struct lpfc_nvme_lport *)localport->private; 2404 2405 /* NVME rports are not preserved across devloss. 2406 * Just register this instance. Note, rpinfo->dev_loss_tmo 2407 * is left 0 to indicate accept transport defaults. The 2408 * driver communicates port role capabilities consistent 2409 * with the PRLI response data. 2410 */ 2411 memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info)); 2412 rpinfo.port_id = ndlp->nlp_DID; 2413 if (ndlp->nlp_type & NLP_NVME_TARGET) 2414 rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET; 2415 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 2416 rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR; 2417 2418 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 2419 rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY; 2420 2421 rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 2422 rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 2423 if (srport) 2424 rpinfo.dev_loss_tmo = srport->dev_loss_tmo; 2425 else 2426 rpinfo.dev_loss_tmo = vport->cfg_devloss_tmo; 2427 2428 spin_lock_irq(&ndlp->lock); 2429 2430 /* If an oldrport exists, so does the ndlp reference. If not 2431 * a new reference is needed because either the node has never 2432 * been registered or it's been unregistered and getting deleted. 2433 */ 2434 oldrport = lpfc_ndlp_get_nrport(ndlp); 2435 if (oldrport) { 2436 prev_ndlp = oldrport->ndlp; 2437 spin_unlock_irq(&ndlp->lock); 2438 } else { 2439 spin_unlock_irq(&ndlp->lock); 2440 if (!lpfc_nlp_get(ndlp)) { 2441 dev_warn(&vport->phba->pcidev->dev, 2442 "Warning - No node ref - exit register\n"); 2443 return 0; 2444 } 2445 } 2446 2447 ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port); 2448 if (!ret) { 2449 /* If the ndlp already has an nrport, this is just 2450 * a resume of the existing rport. Else this is a 2451 * new rport. 2452 */ 2453 /* Guard against an unregister/reregister 2454 * race that leaves the WAIT flag set. 2455 */ 2456 spin_lock_irq(&ndlp->lock); 2457 ndlp->fc4_xpt_flags &= ~NVME_XPT_UNREG_WAIT; 2458 ndlp->fc4_xpt_flags |= NVME_XPT_REGD; 2459 spin_unlock_irq(&ndlp->lock); 2460 rport = remote_port->private; 2461 if (oldrport) { 2462 2463 /* Sever the ndlp<->rport association 2464 * before dropping the ndlp ref from 2465 * register. 2466 */ 2467 spin_lock_irq(&ndlp->lock); 2468 ndlp->nrport = NULL; 2469 ndlp->fc4_xpt_flags &= ~NVME_XPT_UNREG_WAIT; 2470 spin_unlock_irq(&ndlp->lock); 2471 rport->ndlp = NULL; 2472 rport->remoteport = NULL; 2473 2474 /* Reference only removed if previous NDLP is no longer 2475 * active. It might be just a swap and removing the 2476 * reference would cause a premature cleanup. 2477 */ 2478 if (prev_ndlp && prev_ndlp != ndlp) { 2479 if (!prev_ndlp->nrport) 2480 lpfc_nlp_put(prev_ndlp); 2481 } 2482 } 2483 2484 /* Clean bind the rport to the ndlp. */ 2485 rport->remoteport = remote_port; 2486 rport->lport = lport; 2487 rport->ndlp = ndlp; 2488 spin_lock_irq(&ndlp->lock); 2489 ndlp->nrport = rport; 2490 spin_unlock_irq(&ndlp->lock); 2491 lpfc_printf_vlog(vport, KERN_INFO, 2492 LOG_NVME_DISC | LOG_NODE, 2493 "6022 Bind lport x%px to remoteport x%px " 2494 "rport x%px WWNN 0x%llx, " 2495 "Rport WWPN 0x%llx DID " 2496 "x%06x Role x%x, ndlp %p prev_ndlp x%px\n", 2497 lport, remote_port, rport, 2498 rpinfo.node_name, rpinfo.port_name, 2499 rpinfo.port_id, rpinfo.port_role, 2500 ndlp, prev_ndlp); 2501 } else { 2502 lpfc_printf_vlog(vport, KERN_ERR, 2503 LOG_TRACE_EVENT, 2504 "6031 RemotePort Registration failed " 2505 "err: %d, DID x%06x ref %u\n", 2506 ret, ndlp->nlp_DID, kref_read(&ndlp->kref)); 2507 lpfc_nlp_put(ndlp); 2508 } 2509 2510 return ret; 2511 #else 2512 return 0; 2513 #endif 2514 } 2515 2516 /* 2517 * lpfc_nvme_rescan_port - Check to see if we should rescan this remoteport 2518 * 2519 * If the ndlp represents an NVME Target, that we are logged into, 2520 * ping the NVME FC Transport layer to initiate a device rescan 2521 * on this remote NPort. 2522 */ 2523 void 2524 lpfc_nvme_rescan_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2525 { 2526 #if (IS_ENABLED(CONFIG_NVME_FC)) 2527 struct lpfc_nvme_rport *nrport; 2528 struct nvme_fc_remote_port *remoteport = NULL; 2529 2530 spin_lock_irq(&ndlp->lock); 2531 nrport = lpfc_ndlp_get_nrport(ndlp); 2532 if (nrport) 2533 remoteport = nrport->remoteport; 2534 spin_unlock_irq(&ndlp->lock); 2535 2536 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2537 "6170 Rescan NPort DID x%06x type x%x " 2538 "state x%x nrport x%px remoteport x%px\n", 2539 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_state, 2540 nrport, remoteport); 2541 2542 if (!nrport || !remoteport) 2543 goto rescan_exit; 2544 2545 /* Rescan an NVME target in MAPPED state with DISCOVERY role set */ 2546 if (remoteport->port_role & FC_PORT_ROLE_NVME_DISCOVERY && 2547 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 2548 nvme_fc_rescan_remoteport(remoteport); 2549 2550 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2551 "6172 NVME rescanned DID x%06x " 2552 "port_state x%x\n", 2553 ndlp->nlp_DID, remoteport->port_state); 2554 } 2555 return; 2556 rescan_exit: 2557 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2558 "6169 Skip NVME Rport Rescan, NVME remoteport " 2559 "unregistered\n"); 2560 #endif 2561 } 2562 2563 /* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. 2564 * 2565 * There is no notion of Devloss or rport recovery from the current 2566 * nvme_transport perspective. Loss of an rport just means IO cannot 2567 * be sent and recovery is completely up to the initator. 2568 * For now, the driver just unbinds the DID and port_role so that 2569 * no further IO can be issued. 2570 */ 2571 void 2572 lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2573 { 2574 #if (IS_ENABLED(CONFIG_NVME_FC)) 2575 int ret; 2576 struct nvme_fc_local_port *localport; 2577 struct lpfc_nvme_lport *lport; 2578 struct lpfc_nvme_rport *rport; 2579 struct nvme_fc_remote_port *remoteport = NULL; 2580 2581 localport = vport->localport; 2582 2583 /* This is fundamental error. The localport is always 2584 * available until driver unload. Just exit. 2585 */ 2586 if (!localport) 2587 return; 2588 2589 lport = (struct lpfc_nvme_lport *)localport->private; 2590 if (!lport) 2591 goto input_err; 2592 2593 spin_lock_irq(&ndlp->lock); 2594 rport = lpfc_ndlp_get_nrport(ndlp); 2595 if (rport) 2596 remoteport = rport->remoteport; 2597 spin_unlock_irq(&ndlp->lock); 2598 if (!remoteport) 2599 goto input_err; 2600 2601 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2602 "6033 Unreg nvme remoteport x%px, portname x%llx, " 2603 "port_id x%06x, portstate x%x port type x%x " 2604 "refcnt %d\n", 2605 remoteport, remoteport->port_name, 2606 remoteport->port_id, remoteport->port_state, 2607 ndlp->nlp_type, kref_read(&ndlp->kref)); 2608 2609 /* Sanity check ndlp type. Only call for NVME ports. Don't 2610 * clear any rport state until the transport calls back. 2611 */ 2612 2613 if (ndlp->nlp_type & NLP_NVME_TARGET) { 2614 /* No concern about the role change on the nvme remoteport. 2615 * The transport will update it. 2616 */ 2617 spin_lock_irq(&vport->phba->hbalock); 2618 ndlp->fc4_xpt_flags |= NVME_XPT_UNREG_WAIT; 2619 spin_unlock_irq(&vport->phba->hbalock); 2620 2621 /* Don't let the host nvme transport keep sending keep-alives 2622 * on this remoteport. Vport is unloading, no recovery. The 2623 * return values is ignored. The upcall is a courtesy to the 2624 * transport. 2625 */ 2626 if (vport->load_flag & FC_UNLOADING || 2627 unlikely(vport->phba->link_state == LPFC_HBA_ERROR)) 2628 (void)nvme_fc_set_remoteport_devloss(remoteport, 0); 2629 2630 ret = nvme_fc_unregister_remoteport(remoteport); 2631 2632 /* The driver no longer knows if the nrport memory is valid. 2633 * because the controller teardown process has begun and 2634 * is asynchronous. Break the binding in the ndlp. Also 2635 * remove the register ndlp reference to setup node release. 2636 */ 2637 ndlp->nrport = NULL; 2638 lpfc_nlp_put(ndlp); 2639 if (ret != 0) { 2640 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2641 "6167 NVME unregister failed %d " 2642 "port_state x%x\n", 2643 ret, remoteport->port_state); 2644 2645 if (vport->load_flag & FC_UNLOADING) { 2646 /* Only 1 thread can drop the initial node 2647 * reference. Check if another thread has set 2648 * NLP_DROPPED. 2649 */ 2650 spin_lock_irq(&ndlp->lock); 2651 if (!(ndlp->nlp_flag & NLP_DROPPED)) { 2652 ndlp->nlp_flag |= NLP_DROPPED; 2653 spin_unlock_irq(&ndlp->lock); 2654 lpfc_nlp_put(ndlp); 2655 return; 2656 } 2657 spin_unlock_irq(&ndlp->lock); 2658 } 2659 } 2660 } 2661 return; 2662 2663 input_err: 2664 #endif 2665 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2666 "6168 State error: lport x%px, rport x%px FCID x%06x\n", 2667 vport->localport, ndlp->rport, ndlp->nlp_DID); 2668 } 2669 2670 /** 2671 * lpfc_sli4_nvme_pci_offline_aborted - Fast-path process of NVME xri abort 2672 * @phba: pointer to lpfc hba data structure. 2673 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2674 * 2675 * This routine is invoked by the worker thread to process a SLI4 fast-path 2676 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2677 * here. 2678 **/ 2679 void 2680 lpfc_sli4_nvme_pci_offline_aborted(struct lpfc_hba *phba, 2681 struct lpfc_io_buf *lpfc_ncmd) 2682 { 2683 struct nvmefc_fcp_req *nvme_cmd = NULL; 2684 2685 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2686 "6533 %s nvme_cmd %p tag x%x abort complete and " 2687 "xri released\n", __func__, 2688 lpfc_ncmd->nvmeCmd, 2689 lpfc_ncmd->cur_iocbq.iotag); 2690 2691 /* Aborted NVME commands are required to not complete 2692 * before the abort exchange command fully completes. 2693 * Once completed, it is available via the put list. 2694 */ 2695 if (lpfc_ncmd->nvmeCmd) { 2696 nvme_cmd = lpfc_ncmd->nvmeCmd; 2697 nvme_cmd->transferred_length = 0; 2698 nvme_cmd->rcv_rsplen = 0; 2699 nvme_cmd->status = NVME_SC_INTERNAL; 2700 nvme_cmd->done(nvme_cmd); 2701 lpfc_ncmd->nvmeCmd = NULL; 2702 } 2703 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2704 } 2705 2706 /** 2707 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort 2708 * @phba: pointer to lpfc hba data structure. 2709 * @axri: pointer to the fcp xri abort wcqe structure. 2710 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2711 * 2712 * This routine is invoked by the worker thread to process a SLI4 fast-path 2713 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2714 * here. 2715 **/ 2716 void 2717 lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba, 2718 struct sli4_wcqe_xri_aborted *axri, 2719 struct lpfc_io_buf *lpfc_ncmd) 2720 { 2721 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 2722 struct nvmefc_fcp_req *nvme_cmd = NULL; 2723 struct lpfc_nodelist *ndlp = lpfc_ncmd->ndlp; 2724 2725 2726 if (ndlp) 2727 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 2728 2729 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2730 "6311 nvme_cmd %p xri x%x tag x%x abort complete and " 2731 "xri released\n", 2732 lpfc_ncmd->nvmeCmd, xri, 2733 lpfc_ncmd->cur_iocbq.iotag); 2734 2735 /* Aborted NVME commands are required to not complete 2736 * before the abort exchange command fully completes. 2737 * Once completed, it is available via the put list. 2738 */ 2739 if (lpfc_ncmd->nvmeCmd) { 2740 nvme_cmd = lpfc_ncmd->nvmeCmd; 2741 nvme_cmd->done(nvme_cmd); 2742 lpfc_ncmd->nvmeCmd = NULL; 2743 } 2744 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2745 } 2746 2747 /** 2748 * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete 2749 * @phba: Pointer to HBA context object. 2750 * 2751 * This function flushes all wqes in the nvme rings and frees all resources 2752 * in the txcmplq. This function does not issue abort wqes for the IO 2753 * commands in txcmplq, they will just be returned with 2754 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI 2755 * slot has been permanently disabled. 2756 **/ 2757 void 2758 lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba) 2759 { 2760 struct lpfc_sli_ring *pring; 2761 u32 i, wait_cnt = 0; 2762 2763 if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.hdwq) 2764 return; 2765 2766 /* Cycle through all IO rings and make sure all outstanding 2767 * WQEs have been removed from the txcmplqs. 2768 */ 2769 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2770 if (!phba->sli4_hba.hdwq[i].io_wq) 2771 continue; 2772 pring = phba->sli4_hba.hdwq[i].io_wq->pring; 2773 2774 if (!pring) 2775 continue; 2776 2777 /* Retrieve everything on the txcmplq */ 2778 while (!list_empty(&pring->txcmplq)) { 2779 msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); 2780 wait_cnt++; 2781 2782 /* The sleep is 10mS. Every ten seconds, 2783 * dump a message. Something is wrong. 2784 */ 2785 if ((wait_cnt % 1000) == 0) { 2786 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2787 "6178 NVME IO not empty, " 2788 "cnt %d\n", wait_cnt); 2789 } 2790 } 2791 } 2792 2793 /* Make sure HBA is alive */ 2794 lpfc_issue_hb_tmo(phba); 2795 2796 } 2797 2798 void 2799 lpfc_nvme_cancel_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 2800 uint32_t stat, uint32_t param) 2801 { 2802 #if (IS_ENABLED(CONFIG_NVME_FC)) 2803 struct lpfc_io_buf *lpfc_ncmd; 2804 struct nvmefc_fcp_req *nCmd; 2805 struct lpfc_wcqe_complete wcqe; 2806 struct lpfc_wcqe_complete *wcqep = &wcqe; 2807 2808 lpfc_ncmd = pwqeIn->io_buf; 2809 if (!lpfc_ncmd) { 2810 lpfc_sli_release_iocbq(phba, pwqeIn); 2811 return; 2812 } 2813 /* For abort iocb just return, IO iocb will do a done call */ 2814 if (bf_get(wqe_cmnd, &pwqeIn->wqe.gen_req.wqe_com) == 2815 CMD_ABORT_XRI_CX) { 2816 lpfc_sli_release_iocbq(phba, pwqeIn); 2817 return; 2818 } 2819 2820 spin_lock(&lpfc_ncmd->buf_lock); 2821 nCmd = lpfc_ncmd->nvmeCmd; 2822 if (!nCmd) { 2823 spin_unlock(&lpfc_ncmd->buf_lock); 2824 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2825 return; 2826 } 2827 spin_unlock(&lpfc_ncmd->buf_lock); 2828 2829 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2830 "6194 NVME Cancel xri %x\n", 2831 lpfc_ncmd->cur_iocbq.sli4_xritag); 2832 2833 wcqep->word0 = 0; 2834 bf_set(lpfc_wcqe_c_status, wcqep, stat); 2835 wcqep->parameter = param; 2836 wcqep->total_data_placed = 0; 2837 wcqep->word3 = 0; /* xb is 0 */ 2838 2839 /* Call release with XB=1 to queue the IO into the abort list. */ 2840 if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) 2841 bf_set(lpfc_wcqe_c_xb, wcqep, 1); 2842 2843 memcpy(&pwqeIn->wcqe_cmpl, wcqep, sizeof(*wcqep)); 2844 (pwqeIn->cmd_cmpl)(phba, pwqeIn, pwqeIn); 2845 #endif 2846 } 2847