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lpfc_nvme.c
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linux-6.19.14/drivers/scsi/lpfc/lpfc_nvme.c
1/******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2025 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 <linux/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 56static struct lpfc_io_buf * 57lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 58 int idx, int expedite); 59 60static void 61lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_io_buf *); 62 63static 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 **/ 81static int 82lpfc_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 || test_bit(FC_UNLOADING, &vport->load_flag) || 98 test_bit(HBA_IOQ_FLUSH, &vport->phba->hba_flag)) 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 **/ 143static void 144lpfc_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 163static void 164lpfc_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 */ 188static void 189lpfc_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 asynchronously 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 */ 256int 257lpfc_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 test_bit(HBA_IOQ_FLUSH, &vport->phba->hba_flag)) 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 **/ 311void 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 363static void 364lpfc_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 389static int 390lpfc_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 **/ 542int 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 (test_bit(HBA_IOQ_FLUSH, &vport->phba->hba_flag)) 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 **/ 661static int 662lpfc_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 (test_bit(FC_UNLOADING, &vport->load_flag) || 678 test_bit(HBA_IOQ_FLUSH, &vport->phba->hba_flag)) 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 **/ 705int 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 758static int 759lpfc_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 (test_bit(FC_UNLOADING, &axchg->phba->pport->load_flag)) 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 **/ 798static void 799lpfc_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 (test_bit(FC_UNLOADING, &vport->load_flag)) 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. */ 824static inline void 825lpfc_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 **/ 932static void 933lpfc_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 bool offline = false; 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: 1115out_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 if (pci_channel_offline(vport->phba->pcidev) || 1128 lpfc_ncmd->result == IOERR_SLI_DOWN) 1129 offline = true; 1130 } 1131 } 1132 1133 /* pick up SLI4 exhange busy condition */ 1134 if (bf_get(lpfc_wcqe_c_xb, wcqe) && !offline) 1135 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 1136 else 1137 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 1138 1139 /* Update stats and complete the IO. There is 1140 * no need for dma unprep because the nvme_transport 1141 * owns the dma address. 1142 */ 1143#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1144 if (lpfc_ncmd->ts_cmd_start) { 1145 lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp; 1146 lpfc_ncmd->ts_data_io = ktime_get_ns(); 1147 phba->ktime_last_cmd = lpfc_ncmd->ts_data_io; 1148 lpfc_io_ktime(phba, lpfc_ncmd); 1149 } 1150 if (unlikely(phba->hdwqstat_on & LPFC_CHECK_NVME_IO)) { 1151 cpu = raw_smp_processor_id(); 1152 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 1153 if (lpfc_ncmd->cpu != cpu) 1154 lpfc_printf_vlog(vport, 1155 KERN_INFO, LOG_NVME_IOERR, 1156 "6701 CPU Check cmpl: " 1157 "cpu %d expect %d\n", 1158 cpu, lpfc_ncmd->cpu); 1159 } 1160#endif 1161 1162 /* NVME targets need completion held off until the abort exchange 1163 * completes unless the NVME Rport is getting unregistered. 1164 */ 1165 1166 if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 1167 freqpriv = nCmd->private; 1168 freqpriv->nvme_buf = NULL; 1169 lpfc_ncmd->nvmeCmd = NULL; 1170 call_done = true; 1171 } 1172 spin_unlock(&lpfc_ncmd->buf_lock); 1173 1174 /* Check if IO qualified for CMF */ 1175 if (phba->cmf_active_mode != LPFC_CFG_OFF && 1176 nCmd->io_dir == NVMEFC_FCP_READ && 1177 nCmd->payload_length) { 1178 /* Used when calculating average latency */ 1179 lat = ktime_get_ns() - lpfc_ncmd->rx_cmd_start; 1180 lpfc_update_cmf_cmpl(phba, lat, nCmd->payload_length, NULL); 1181 } 1182 1183 if (call_done) 1184 nCmd->done(nCmd); 1185 1186 /* Call release with XB=1 to queue the IO into the abort list. */ 1187 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1188} 1189 1190 1191/** 1192 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO 1193 * @vport: pointer to a host virtual N_Port data structure 1194 * @lpfc_ncmd: Pointer to lpfc scsi command 1195 * @pnode: pointer to a node-list data structure 1196 * @cstat: pointer to the control status structure 1197 * 1198 * Driver registers this routine as it io request handler. This 1199 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1200 * data structure to the rport indicated in @lpfc_nvme_rport. 1201 * 1202 * Return value : 1203 * 0 - Success 1204 * TODO: What are the failure codes. 1205 **/ 1206static int 1207lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, 1208 struct lpfc_io_buf *lpfc_ncmd, 1209 struct lpfc_nodelist *pnode, 1210 struct lpfc_fc4_ctrl_stat *cstat) 1211{ 1212 struct lpfc_hba *phba = vport->phba; 1213 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1214 struct nvme_common_command *sqe; 1215 struct lpfc_iocbq *pwqeq = &lpfc_ncmd->cur_iocbq; 1216 union lpfc_wqe128 *wqe = &pwqeq->wqe; 1217 uint32_t req_len; 1218 1219 /* 1220 * There are three possibilities here - use scatter-gather segment, use 1221 * the single mapping, or neither. 1222 */ 1223 if (nCmd->sg_cnt) { 1224 if (nCmd->io_dir == NVMEFC_FCP_WRITE) { 1225 /* From the iwrite template, initialize words 7 - 11 */ 1226 memcpy(&wqe->words[7], 1227 &lpfc_iwrite_cmd_template.words[7], 1228 sizeof(uint32_t) * 5); 1229 1230 /* Word 4 */ 1231 wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length; 1232 1233 /* Word 5 */ 1234 if ((phba->cfg_nvme_enable_fb) && 1235 test_bit(NLP_FIRSTBURST, &pnode->nlp_flag)) { 1236 req_len = lpfc_ncmd->nvmeCmd->payload_length; 1237 wqe->fcp_iwrite.initial_xfer_len = min(req_len, 1238 pnode->nvme_fb_size); 1239 } else { 1240 wqe->fcp_iwrite.initial_xfer_len = 0; 1241 } 1242 cstat->output_requests++; 1243 } else { 1244 /* From the iread template, initialize words 7 - 11 */ 1245 memcpy(&wqe->words[7], 1246 &lpfc_iread_cmd_template.words[7], 1247 sizeof(uint32_t) * 5); 1248 1249 /* Word 4 */ 1250 wqe->fcp_iread.total_xfer_len = nCmd->payload_length; 1251 1252 /* Word 5 */ 1253 wqe->fcp_iread.rsrvd5 = 0; 1254 1255 /* For a CMF Managed port, iod must be zero'ed */ 1256 if (phba->cmf_active_mode == LPFC_CFG_MANAGED) 1257 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, 1258 LPFC_WQE_IOD_NONE); 1259 cstat->input_requests++; 1260 } 1261 } else { 1262 /* From the icmnd template, initialize words 4 - 11 */ 1263 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 1264 sizeof(uint32_t) * 8); 1265 cstat->control_requests++; 1266 } 1267 1268 if (pnode->nlp_nvme_info & NLP_NVME_NSLER) { 1269 bf_set(wqe_erp, &wqe->generic.wqe_com, 1); 1270 sqe = &((struct nvme_fc_cmd_iu *) 1271 nCmd->cmdaddr)->sqe.common; 1272 if (sqe->opcode == nvme_admin_async_event) 1273 bf_set(wqe_ffrq, &wqe->generic.wqe_com, 1); 1274 } 1275 1276 /* 1277 * Finish initializing those WQE fields that are independent 1278 * of the nvme_cmnd request_buffer 1279 */ 1280 1281 /* Word 3 */ 1282 bf_set(payload_offset_len, &wqe->fcp_icmd, 1283 (nCmd->rsplen + nCmd->cmdlen)); 1284 1285 /* Word 6 */ 1286 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 1287 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 1288 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 1289 1290 /* Word 8 */ 1291 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 1292 1293 /* Word 9 */ 1294 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 1295 1296 /* Word 10 */ 1297 bf_set(wqe_xchg, &wqe->fcp_iwrite.wqe_com, LPFC_NVME_XCHG); 1298 1299 /* Words 13 14 15 are for PBDE support */ 1300 1301 /* add the VMID tags as per switch response */ 1302 if (unlikely(lpfc_ncmd->cur_iocbq.cmd_flag & LPFC_IO_VMID)) { 1303 if (phba->pport->vmid_priority_tagging) { 1304 bf_set(wqe_ccpe, &wqe->fcp_iwrite.wqe_com, 1); 1305 bf_set(wqe_ccp, &wqe->fcp_iwrite.wqe_com, 1306 lpfc_ncmd->cur_iocbq.vmid_tag.cs_ctl_vmid); 1307 } else { 1308 bf_set(wqe_appid, &wqe->fcp_iwrite.wqe_com, 1); 1309 bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1); 1310 wqe->words[31] = lpfc_ncmd->cur_iocbq.vmid_tag.app_id; 1311 } 1312 } 1313 1314 pwqeq->vport = vport; 1315 return 0; 1316} 1317 1318 1319/** 1320 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO 1321 * @vport: pointer to a host virtual N_Port data structure 1322 * @lpfc_ncmd: Pointer to lpfc scsi command 1323 * 1324 * Driver registers this routine as it io request handler. This 1325 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1326 * data structure to the rport indicated in @lpfc_nvme_rport. 1327 * 1328 * Return value : 1329 * 0 - Success 1330 * TODO: What are the failure codes. 1331 **/ 1332static int 1333lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, 1334 struct lpfc_io_buf *lpfc_ncmd) 1335{ 1336 struct lpfc_hba *phba = vport->phba; 1337 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1338 union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe; 1339 struct sli4_sge *sgl = lpfc_ncmd->dma_sgl; 1340 struct sli4_hybrid_sgl *sgl_xtra = NULL; 1341 struct scatterlist *data_sg; 1342 struct sli4_sge *first_data_sgl; 1343 struct ulp_bde64 *bde; 1344 dma_addr_t physaddr = 0; 1345 uint32_t dma_len = 0; 1346 uint32_t dma_offset = 0; 1347 int nseg, i, j; 1348 bool lsp_just_set = false; 1349 1350 /* Fix up the command and response DMA stuff. */ 1351 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); 1352 1353 /* 1354 * There are three possibilities here - use scatter-gather segment, use 1355 * the single mapping, or neither. 1356 */ 1357 if (nCmd->sg_cnt) { 1358 /* 1359 * Jump over the cmd and rsp SGEs. The fix routine 1360 * has already adjusted for this. 1361 */ 1362 sgl += 2; 1363 1364 first_data_sgl = sgl; 1365 lpfc_ncmd->seg_cnt = nCmd->sg_cnt; 1366 if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) { 1367 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1368 "6058 Too many sg segments from " 1369 "NVME Transport. Max %d, " 1370 "nvmeIO sg_cnt %d\n", 1371 phba->cfg_nvme_seg_cnt + 1, 1372 lpfc_ncmd->seg_cnt); 1373 lpfc_ncmd->seg_cnt = 0; 1374 return 1; 1375 } 1376 1377 /* 1378 * The driver established a maximum scatter-gather segment count 1379 * during probe that limits the number of sg elements in any 1380 * single nvme command. Just run through the seg_cnt and format 1381 * the sge's. 1382 */ 1383 nseg = nCmd->sg_cnt; 1384 data_sg = nCmd->first_sgl; 1385 1386 /* for tracking the segment boundaries */ 1387 j = 2; 1388 for (i = 0; i < nseg; i++) { 1389 if (data_sg == NULL) { 1390 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1391 "6059 dptr err %d, nseg %d\n", 1392 i, nseg); 1393 lpfc_ncmd->seg_cnt = 0; 1394 return 1; 1395 } 1396 1397 sgl->word2 = 0; 1398 if (nseg == 1) { 1399 bf_set(lpfc_sli4_sge_last, sgl, 1); 1400 bf_set(lpfc_sli4_sge_type, sgl, 1401 LPFC_SGE_TYPE_DATA); 1402 } else { 1403 bf_set(lpfc_sli4_sge_last, sgl, 0); 1404 1405 /* expand the segment */ 1406 if (!lsp_just_set && 1407 !((j + 1) % phba->border_sge_num) && 1408 ((nseg - 1) != i)) { 1409 /* set LSP type */ 1410 bf_set(lpfc_sli4_sge_type, sgl, 1411 LPFC_SGE_TYPE_LSP); 1412 1413 sgl_xtra = lpfc_get_sgl_per_hdwq( 1414 phba, lpfc_ncmd); 1415 1416 if (unlikely(!sgl_xtra)) { 1417 lpfc_ncmd->seg_cnt = 0; 1418 return 1; 1419 } 1420 sgl->addr_lo = cpu_to_le32(putPaddrLow( 1421 sgl_xtra->dma_phys_sgl)); 1422 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 1423 sgl_xtra->dma_phys_sgl)); 1424 1425 } else { 1426 bf_set(lpfc_sli4_sge_type, sgl, 1427 LPFC_SGE_TYPE_DATA); 1428 } 1429 } 1430 1431 if (!(bf_get(lpfc_sli4_sge_type, sgl) & 1432 LPFC_SGE_TYPE_LSP)) { 1433 if ((nseg - 1) == i) 1434 bf_set(lpfc_sli4_sge_last, sgl, 1); 1435 1436 physaddr = sg_dma_address(data_sg); 1437 dma_len = sg_dma_len(data_sg); 1438 sgl->addr_lo = cpu_to_le32( 1439 putPaddrLow(physaddr)); 1440 sgl->addr_hi = cpu_to_le32( 1441 putPaddrHigh(physaddr)); 1442 1443 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 1444 sgl->word2 = cpu_to_le32(sgl->word2); 1445 sgl->sge_len = cpu_to_le32(dma_len); 1446 1447 dma_offset += dma_len; 1448 data_sg = sg_next(data_sg); 1449 1450 sgl++; 1451 1452 lsp_just_set = false; 1453 } else { 1454 sgl->word2 = cpu_to_le32(sgl->word2); 1455 1456 sgl->sge_len = cpu_to_le32( 1457 phba->cfg_sg_dma_buf_size); 1458 1459 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 1460 i = i - 1; 1461 1462 lsp_just_set = true; 1463 } 1464 1465 j++; 1466 } 1467 1468 /* PBDE support for first data SGE only */ 1469 if (nseg == 1 && phba->cfg_enable_pbde) { 1470 /* Words 13-15 */ 1471 bde = (struct ulp_bde64 *) 1472 &wqe->words[13]; 1473 bde->addrLow = first_data_sgl->addr_lo; 1474 bde->addrHigh = first_data_sgl->addr_hi; 1475 bde->tus.f.bdeSize = 1476 le32_to_cpu(first_data_sgl->sge_len); 1477 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1478 bde->tus.w = cpu_to_le32(bde->tus.w); 1479 1480 /* Word 11 - set PBDE bit */ 1481 bf_set(wqe_pbde, &wqe->generic.wqe_com, 1); 1482 } else { 1483 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 1484 /* Word 11 - PBDE bit disabled by default template */ 1485 } 1486 1487 } else { 1488 lpfc_ncmd->seg_cnt = 0; 1489 1490 /* For this clause to be valid, the payload_length 1491 * and sg_cnt must zero. 1492 */ 1493 if (nCmd->payload_length != 0) { 1494 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 1495 "6063 NVME DMA Prep Err: sg_cnt %d " 1496 "payload_length x%x\n", 1497 nCmd->sg_cnt, nCmd->payload_length); 1498 return 1; 1499 } 1500 } 1501 return 0; 1502} 1503 1504/** 1505 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO 1506 * @pnvme_lport: Pointer to the driver's local port data 1507 * @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1508 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1509 * @pnvme_fcreq: IO request from nvme fc to driver. 1510 * 1511 * Driver registers this routine as it io request handler. This 1512 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1513 * data structure to the rport indicated in @lpfc_nvme_rport. 1514 * 1515 * Return value : 1516 * 0 - Success 1517 * TODO: What are the failure codes. 1518 **/ 1519static int 1520lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, 1521 struct nvme_fc_remote_port *pnvme_rport, 1522 void *hw_queue_handle, 1523 struct nvmefc_fcp_req *pnvme_fcreq) 1524{ 1525 int ret = 0; 1526 int expedite = 0; 1527 int idx, cpu; 1528 struct lpfc_nvme_lport *lport; 1529 struct lpfc_fc4_ctrl_stat *cstat; 1530 struct lpfc_vport *vport; 1531 struct lpfc_hba *phba; 1532 struct lpfc_nodelist *ndlp; 1533 struct lpfc_io_buf *lpfc_ncmd; 1534 struct lpfc_nvme_rport *rport; 1535 struct lpfc_nvme_qhandle *lpfc_queue_info; 1536 struct lpfc_nvme_fcpreq_priv *freqpriv; 1537 struct nvme_common_command *sqe; 1538 uint64_t start = 0; 1539#if (IS_ENABLED(CONFIG_NVME_FC)) 1540 u8 *uuid = NULL; 1541 int err; 1542 enum dma_data_direction iodir; 1543#endif 1544 1545 /* Validate pointers. LLDD fault handling with transport does 1546 * have timing races. 1547 */ 1548 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1549 if (unlikely(!lport)) { 1550 ret = -EINVAL; 1551 goto out_fail; 1552 } 1553 1554 vport = lport->vport; 1555 1556 if (unlikely(!hw_queue_handle)) { 1557 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1558 "6117 Fail IO, NULL hw_queue_handle\n"); 1559 atomic_inc(&lport->xmt_fcp_err); 1560 ret = -EBUSY; 1561 goto out_fail; 1562 } 1563 1564 phba = vport->phba; 1565 1566 if ((unlikely(test_bit(FC_UNLOADING, &vport->load_flag))) || 1567 test_bit(HBA_IOQ_FLUSH, &phba->hba_flag)) { 1568 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1569 "6124 Fail IO, Driver unload\n"); 1570 atomic_inc(&lport->xmt_fcp_err); 1571 ret = -ENODEV; 1572 goto out_fail; 1573 } 1574 1575 freqpriv = pnvme_fcreq->private; 1576 if (unlikely(!freqpriv)) { 1577 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1578 "6158 Fail IO, NULL request data\n"); 1579 atomic_inc(&lport->xmt_fcp_err); 1580 ret = -EINVAL; 1581 goto out_fail; 1582 } 1583 1584#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1585 if (phba->ktime_on) 1586 start = ktime_get_ns(); 1587#endif 1588 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 1589 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; 1590 1591 /* 1592 * Catch race where our node has transitioned, but the 1593 * transport is still transitioning. 1594 */ 1595 ndlp = rport->ndlp; 1596 if (!ndlp) { 1597 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1598 "6053 Busy IO, ndlp not ready: rport x%px " 1599 "ndlp x%px, DID x%06x\n", 1600 rport, ndlp, pnvme_rport->port_id); 1601 atomic_inc(&lport->xmt_fcp_err); 1602 ret = -EBUSY; 1603 goto out_fail; 1604 } 1605 1606 /* The remote node has to be a mapped target or it's an error. */ 1607 if ((ndlp->nlp_type & NLP_NVME_TARGET) && 1608 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 1609 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1610 "6036 Fail IO, DID x%06x not ready for " 1611 "IO. State x%x, Type x%x Flg x%x\n", 1612 pnvme_rport->port_id, 1613 ndlp->nlp_state, ndlp->nlp_type, 1614 ndlp->fc4_xpt_flags); 1615 atomic_inc(&lport->xmt_fcp_bad_ndlp); 1616 ret = -EBUSY; 1617 goto out_fail; 1618 1619 } 1620 1621 /* Currently only NVME Keep alive commands should be expedited 1622 * if the driver runs out of a resource. These should only be 1623 * issued on the admin queue, qidx 0 1624 */ 1625 if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) { 1626 sqe = &((struct nvme_fc_cmd_iu *) 1627 pnvme_fcreq->cmdaddr)->sqe.common; 1628 if (sqe->opcode == nvme_admin_keep_alive) 1629 expedite = 1; 1630 } 1631 1632 /* Check if IO qualifies for CMF */ 1633 if (phba->cmf_active_mode != LPFC_CFG_OFF && 1634 pnvme_fcreq->io_dir == NVMEFC_FCP_READ && 1635 pnvme_fcreq->payload_length) { 1636 ret = lpfc_update_cmf_cmd(phba, pnvme_fcreq->payload_length); 1637 if (ret) { 1638 ret = -EBUSY; 1639 goto out_fail; 1640 } 1641 /* Get start time for IO latency */ 1642 start = ktime_get_ns(); 1643 } 1644 1645 /* The node is shared with FCP IO, make sure the IO pending count does 1646 * not exceed the programmed depth. 1647 */ 1648 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 1649 if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) && 1650 !expedite) { 1651 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1652 "6174 Fail IO, ndlp qdepth exceeded: " 1653 "idx %d DID %x pend %d qdepth %d\n", 1654 lpfc_queue_info->index, ndlp->nlp_DID, 1655 atomic_read(&ndlp->cmd_pending), 1656 ndlp->cmd_qdepth); 1657 atomic_inc(&lport->xmt_fcp_qdepth); 1658 ret = -EBUSY; 1659 goto out_fail1; 1660 } 1661 } 1662 1663 /* Lookup Hardware Queue index based on fcp_io_sched module parameter */ 1664 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) { 1665 idx = lpfc_queue_info->index; 1666 } else { 1667 cpu = raw_smp_processor_id(); 1668 idx = phba->sli4_hba.cpu_map[cpu].hdwq; 1669 } 1670 1671 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, idx, expedite); 1672 if (lpfc_ncmd == NULL) { 1673 atomic_inc(&lport->xmt_fcp_noxri); 1674 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1675 "6065 Fail IO, driver buffer pool is empty: " 1676 "idx %d DID %x\n", 1677 lpfc_queue_info->index, ndlp->nlp_DID); 1678 ret = -EBUSY; 1679 goto out_fail1; 1680 } 1681#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1682 if (start) { 1683 lpfc_ncmd->ts_cmd_start = start; 1684 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; 1685 } else { 1686 lpfc_ncmd->ts_cmd_start = 0; 1687 } 1688#endif 1689 lpfc_ncmd->rx_cmd_start = start; 1690 1691 /* 1692 * Store the data needed by the driver to issue, abort, and complete 1693 * an IO. 1694 * Do not let the IO hang out forever. There is no midlayer issuing 1695 * an abort so inform the FW of the maximum IO pending time. 1696 */ 1697 freqpriv->nvme_buf = lpfc_ncmd; 1698 lpfc_ncmd->nvmeCmd = pnvme_fcreq; 1699 lpfc_ncmd->ndlp = ndlp; 1700 lpfc_ncmd->qidx = lpfc_queue_info->qidx; 1701 1702#if (IS_ENABLED(CONFIG_NVME_FC)) 1703 /* check the necessary and sufficient condition to support VMID */ 1704 if (lpfc_is_vmid_enabled(phba) && 1705 (ndlp->vmid_support || 1706 phba->pport->vmid_priority_tagging == 1707 LPFC_VMID_PRIO_TAG_ALL_TARGETS)) { 1708 /* is the I/O generated by a VM, get the associated virtual */ 1709 /* entity id */ 1710 uuid = nvme_fc_io_getuuid(pnvme_fcreq); 1711 1712 if (uuid) { 1713 if (pnvme_fcreq->io_dir == NVMEFC_FCP_WRITE) 1714 iodir = DMA_TO_DEVICE; 1715 else if (pnvme_fcreq->io_dir == NVMEFC_FCP_READ) 1716 iodir = DMA_FROM_DEVICE; 1717 else 1718 iodir = DMA_NONE; 1719 1720 err = lpfc_vmid_get_appid(vport, uuid, iodir, 1721 (union lpfc_vmid_io_tag *) 1722 &lpfc_ncmd->cur_iocbq.vmid_tag); 1723 if (!err) 1724 lpfc_ncmd->cur_iocbq.cmd_flag |= LPFC_IO_VMID; 1725 } 1726 } 1727#endif 1728 1729 /* 1730 * Issue the IO on the WQ indicated by index in the hw_queue_handle. 1731 * This identfier was create in our hardware queue create callback 1732 * routine. The driver now is dependent on the IO queue steering from 1733 * the transport. We are trusting the upper NVME layers know which 1734 * index to use and that they have affinitized a CPU to this hardware 1735 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. 1736 */ 1737 lpfc_ncmd->cur_iocbq.hba_wqidx = idx; 1738 cstat = &phba->sli4_hba.hdwq[idx].nvme_cstat; 1739 1740 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat); 1741 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); 1742 if (ret) { 1743 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1744 "6175 Fail IO, Prep DMA: " 1745 "idx %d DID %x\n", 1746 lpfc_queue_info->index, ndlp->nlp_DID); 1747 atomic_inc(&lport->xmt_fcp_err); 1748 ret = -ENOMEM; 1749 goto out_free_nvme_buf; 1750 } 1751 1752 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n", 1753 lpfc_ncmd->cur_iocbq.sli4_xritag, 1754 lpfc_queue_info->index, ndlp->nlp_DID); 1755 1756 ret = lpfc_sli4_issue_wqe(phba, lpfc_ncmd->hdwq, &lpfc_ncmd->cur_iocbq); 1757 if (ret) { 1758 atomic_inc(&lport->xmt_fcp_wqerr); 1759 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1760 "6113 Fail IO, Could not issue WQE err %x " 1761 "sid: x%x did: x%x oxid: x%x\n", 1762 ret, vport->fc_myDID, ndlp->nlp_DID, 1763 lpfc_ncmd->cur_iocbq.sli4_xritag); 1764 goto out_free_nvme_buf; 1765 } 1766 1767 if (phba->cfg_xri_rebalancing) 1768 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_ncmd->hdwq_no); 1769 1770#ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1771 if (lpfc_ncmd->ts_cmd_start) 1772 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); 1773 1774 if (phba->hdwqstat_on & LPFC_CHECK_NVME_IO) { 1775 cpu = raw_smp_processor_id(); 1776 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 1777 lpfc_ncmd->cpu = cpu; 1778 if (idx != cpu) 1779 lpfc_printf_vlog(vport, 1780 KERN_INFO, LOG_NVME_IOERR, 1781 "6702 CPU Check cmd: " 1782 "cpu %d wq %d\n", 1783 lpfc_ncmd->cpu, 1784 lpfc_queue_info->index); 1785 } 1786#endif 1787 return 0; 1788 1789 out_free_nvme_buf: 1790 if (lpfc_ncmd->nvmeCmd->sg_cnt) { 1791 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE) 1792 cstat->output_requests--; 1793 else 1794 cstat->input_requests--; 1795 } else 1796 cstat->control_requests--; 1797 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1798 out_fail1: 1799 lpfc_update_cmf_cmpl(phba, LPFC_CGN_NOT_SENT, 1800 pnvme_fcreq->payload_length, NULL); 1801 out_fail: 1802 return ret; 1803} 1804 1805/** 1806 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. 1807 * @phba: Pointer to HBA context object 1808 * @cmdiocb: Pointer to command iocb object. 1809 * @rspiocb: Pointer to response iocb object. 1810 * 1811 * This is the callback function for any NVME FCP IO that was aborted. 1812 * 1813 * Return value: 1814 * None 1815 **/ 1816void 1817lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1818 struct lpfc_iocbq *rspiocb) 1819{ 1820 struct lpfc_wcqe_complete *abts_cmpl = &rspiocb->wcqe_cmpl; 1821 1822 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1823 "6145 ABORT_XRI_CN completing on rpi x%x " 1824 "original iotag x%x, abort cmd iotag x%x " 1825 "req_tag x%x, status x%x, hwstatus x%x\n", 1826 bf_get(wqe_ctxt_tag, &cmdiocb->wqe.generic.wqe_com), 1827 get_job_abtsiotag(phba, cmdiocb), cmdiocb->iotag, 1828 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), 1829 bf_get(lpfc_wcqe_c_status, abts_cmpl), 1830 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); 1831 lpfc_sli_release_iocbq(phba, cmdiocb); 1832} 1833 1834/** 1835 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS 1836 * @pnvme_lport: Pointer to the driver's local port data 1837 * @pnvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1838 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1839 * @pnvme_fcreq: IO request from nvme fc to driver. 1840 * 1841 * Driver registers this routine as its nvme request io abort handler. This 1842 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq 1843 * data structure to the rport indicated in @lpfc_nvme_rport. This routine 1844 * is executed asynchronously - one the target is validated as "MAPPED" and 1845 * ready for IO, the driver issues the abort request and returns. 1846 * 1847 * Return value: 1848 * None 1849 **/ 1850static void 1851lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, 1852 struct nvme_fc_remote_port *pnvme_rport, 1853 void *hw_queue_handle, 1854 struct nvmefc_fcp_req *pnvme_fcreq) 1855{ 1856 struct lpfc_nvme_lport *lport; 1857 struct lpfc_vport *vport; 1858 struct lpfc_hba *phba; 1859 struct lpfc_io_buf *lpfc_nbuf; 1860 struct lpfc_iocbq *nvmereq_wqe; 1861 struct lpfc_nvme_fcpreq_priv *freqpriv; 1862 unsigned long flags; 1863 int ret_val; 1864 1865 /* Validate pointers. LLDD fault handling with transport does 1866 * have timing races. 1867 */ 1868 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1869 if (unlikely(!lport)) 1870 return; 1871 1872 vport = lport->vport; 1873 1874 if (unlikely(!hw_queue_handle)) { 1875 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1876 "6129 Fail Abort, HW Queue Handle NULL.\n"); 1877 return; 1878 } 1879 1880 phba = vport->phba; 1881 freqpriv = pnvme_fcreq->private; 1882 1883 if (unlikely(!freqpriv)) 1884 return; 1885 if (test_bit(FC_UNLOADING, &vport->load_flag)) 1886 return; 1887 1888 /* Announce entry to new IO submit field. */ 1889 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1890 "6002 Abort Request to rport DID x%06x " 1891 "for nvme_fc_req x%px\n", 1892 pnvme_rport->port_id, 1893 pnvme_fcreq); 1894 1895 lpfc_nbuf = freqpriv->nvme_buf; 1896 if (!lpfc_nbuf) { 1897 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1898 "6140 NVME IO req has no matching lpfc nvme " 1899 "io buffer. Skipping abort req.\n"); 1900 return; 1901 } else if (!lpfc_nbuf->nvmeCmd) { 1902 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1903 "6141 lpfc NVME IO req has no nvme_fcreq " 1904 "io buffer. Skipping abort req.\n"); 1905 return; 1906 } 1907 1908 /* driver queued commands are in process of being flushed */ 1909 if (test_bit(HBA_IOQ_FLUSH, &phba->hba_flag)) { 1910 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1911 "6139 Driver in reset cleanup - flushing " 1912 "NVME Req now. hba_flag x%lx\n", 1913 phba->hba_flag); 1914 return; 1915 } 1916 1917 /* Guard against IO completion being called at same time */ 1918 spin_lock_irqsave(&lpfc_nbuf->buf_lock, flags); 1919 spin_lock(&phba->hbalock); 1920 1921 nvmereq_wqe = &lpfc_nbuf->cur_iocbq; 1922 1923 /* 1924 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's 1925 * state must match the nvme_fcreq passed by the nvme 1926 * transport. If they don't match, it is likely the driver 1927 * has already completed the NVME IO and the nvme transport 1928 * has not seen it yet. 1929 */ 1930 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { 1931 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1932 "6143 NVME req mismatch: " 1933 "lpfc_nbuf x%px nvmeCmd x%px, " 1934 "pnvme_fcreq x%px. Skipping Abort xri x%x\n", 1935 lpfc_nbuf, lpfc_nbuf->nvmeCmd, 1936 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1937 goto out_unlock; 1938 } 1939 1940 /* Don't abort IOs no longer on the pending queue. */ 1941 if (!(nvmereq_wqe->cmd_flag & LPFC_IO_ON_TXCMPLQ)) { 1942 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1943 "6142 NVME IO req x%px not queued - skipping " 1944 "abort req xri x%x\n", 1945 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1946 goto out_unlock; 1947 } 1948 1949 atomic_inc(&lport->xmt_fcp_abort); 1950 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n", 1951 nvmereq_wqe->sli4_xritag, 1952 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id); 1953 1954 /* Outstanding abort is in progress */ 1955 if (nvmereq_wqe->cmd_flag & LPFC_DRIVER_ABORTED) { 1956 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1957 "6144 Outstanding NVME I/O Abort Request " 1958 "still pending on nvme_fcreq x%px, " 1959 "lpfc_ncmd x%px xri x%x\n", 1960 pnvme_fcreq, lpfc_nbuf, 1961 nvmereq_wqe->sli4_xritag); 1962 goto out_unlock; 1963 } 1964 1965 ret_val = lpfc_sli4_issue_abort_iotag(phba, nvmereq_wqe, 1966 lpfc_nvme_abort_fcreq_cmpl); 1967 1968 spin_unlock(&phba->hbalock); 1969 spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); 1970 1971 /* Make sure HBA is alive */ 1972 lpfc_issue_hb_tmo(phba); 1973 1974 if (ret_val != WQE_SUCCESS) { 1975 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 1976 "6137 Failed abts issue_wqe with status x%x " 1977 "for nvme_fcreq x%px.\n", 1978 ret_val, pnvme_fcreq); 1979 return; 1980 } 1981 1982 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1983 "6138 Transport Abort NVME Request Issued for " 1984 "ox_id x%x\n", 1985 nvmereq_wqe->sli4_xritag); 1986 return; 1987 1988out_unlock: 1989 spin_unlock(&phba->hbalock); 1990 spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); 1991 return; 1992} 1993 1994/* Declare and initialization an instance of the FC NVME template. */ 1995static struct nvme_fc_port_template lpfc_nvme_template = { 1996 /* initiator-based functions */ 1997 .localport_delete = lpfc_nvme_localport_delete, 1998 .remoteport_delete = lpfc_nvme_remoteport_delete, 1999 .create_queue = lpfc_nvme_create_queue, 2000 .delete_queue = lpfc_nvme_delete_queue, 2001 .ls_req = lpfc_nvme_ls_req, 2002 .fcp_io = lpfc_nvme_fcp_io_submit, 2003 .ls_abort = lpfc_nvme_ls_abort, 2004 .fcp_abort = lpfc_nvme_fcp_abort, 2005 .xmt_ls_rsp = lpfc_nvme_xmt_ls_rsp, 2006 2007 .max_hw_queues = 1, 2008 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 2009 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 2010 .dma_boundary = 0xFFFFFFFF, 2011 2012 /* Sizes of additional private data for data structures. 2013 * No use for the last two sizes at this time. 2014 */ 2015 .local_priv_sz = sizeof(struct lpfc_nvme_lport), 2016 .remote_priv_sz = sizeof(struct lpfc_nvme_rport), 2017 .lsrqst_priv_sz = 0, 2018 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv), 2019}; 2020 2021/* 2022 * lpfc_get_nvme_buf - Get a nvme buffer from io_buf_list of the HBA 2023 * 2024 * This routine removes a nvme buffer from head of @hdwq io_buf_list 2025 * and returns to caller. 2026 * 2027 * Return codes: 2028 * NULL - Error 2029 * Pointer to lpfc_nvme_buf - Success 2030 **/ 2031static struct lpfc_io_buf * 2032lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 2033 int idx, int expedite) 2034{ 2035 struct lpfc_io_buf *lpfc_ncmd; 2036 struct lpfc_sli4_hdw_queue *qp; 2037 struct sli4_sge *sgl; 2038 struct lpfc_iocbq *pwqeq; 2039 union lpfc_wqe128 *wqe; 2040 2041 lpfc_ncmd = lpfc_get_io_buf(phba, NULL, idx, expedite); 2042 2043 if (lpfc_ncmd) { 2044 pwqeq = &(lpfc_ncmd->cur_iocbq); 2045 wqe = &pwqeq->wqe; 2046 2047 /* Setup key fields in buffer that may have been changed 2048 * if other protocols used this buffer. 2049 */ 2050 pwqeq->cmd_flag = LPFC_IO_NVME; 2051 pwqeq->cmd_cmpl = lpfc_nvme_io_cmd_cmpl; 2052 lpfc_ncmd->start_time = jiffies; 2053 lpfc_ncmd->flags = 0; 2054 2055 /* Rsp SGE will be filled in when we rcv an IO 2056 * from the NVME Layer to be sent. 2057 * The cmd is going to be embedded so we need a SKIP SGE. 2058 */ 2059 sgl = lpfc_ncmd->dma_sgl; 2060 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2061 bf_set(lpfc_sli4_sge_last, sgl, 0); 2062 sgl->word2 = cpu_to_le32(sgl->word2); 2063 /* Fill in word 3 / sgl_len during cmd submission */ 2064 2065 /* Initialize 64 bytes only */ 2066 memset(wqe, 0, sizeof(union lpfc_wqe)); 2067 2068 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 2069 atomic_inc(&ndlp->cmd_pending); 2070 lpfc_ncmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 2071 } 2072 2073 } else { 2074 qp = &phba->sli4_hba.hdwq[idx]; 2075 qp->empty_io_bufs++; 2076 } 2077 2078 return lpfc_ncmd; 2079} 2080 2081/** 2082 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. 2083 * @phba: The Hba for which this call is being executed. 2084 * @lpfc_ncmd: The nvme buffer which is being released. 2085 * 2086 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba 2087 * lpfc_io_buf_list list. For SLI4 XRI's are tied to the nvme buffer 2088 * and cannot be reused for at least RA_TOV amount of time if it was 2089 * aborted. 2090 **/ 2091static void 2092lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd) 2093{ 2094 struct lpfc_sli4_hdw_queue *qp; 2095 unsigned long iflag = 0; 2096 2097 if ((lpfc_ncmd->flags & LPFC_SBUF_BUMP_QDEPTH) && lpfc_ncmd->ndlp) 2098 atomic_dec(&lpfc_ncmd->ndlp->cmd_pending); 2099 2100 lpfc_ncmd->ndlp = NULL; 2101 lpfc_ncmd->flags &= ~LPFC_SBUF_BUMP_QDEPTH; 2102 2103 qp = lpfc_ncmd->hdwq; 2104 if (unlikely(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 2105 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2106 "6310 XB release deferred for " 2107 "ox_id x%x on reqtag x%x\n", 2108 lpfc_ncmd->cur_iocbq.sli4_xritag, 2109 lpfc_ncmd->cur_iocbq.iotag); 2110 2111 spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag); 2112 list_add_tail(&lpfc_ncmd->list, 2113 &qp->lpfc_abts_io_buf_list); 2114 qp->abts_nvme_io_bufs++; 2115 spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag); 2116 } else 2117 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)lpfc_ncmd, qp); 2118} 2119 2120/** 2121 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. 2122 * @vport: the lpfc_vport instance requesting a localport. 2123 * 2124 * This routine is invoked to create an nvme localport instance to bind 2125 * to the nvme_fc_transport. It is called once during driver load 2126 * like lpfc_create_shost after all other services are initialized. 2127 * It requires a vport, vpi, and wwns at call time. Other localport 2128 * parameters are modified as the driver's FCID and the Fabric WWN 2129 * are established. 2130 * 2131 * Return codes 2132 * 0 - successful 2133 * -ENOMEM - no heap memory available 2134 * other values - from nvme registration upcall 2135 **/ 2136int 2137lpfc_nvme_create_localport(struct lpfc_vport *vport) 2138{ 2139 int ret = 0; 2140 struct lpfc_hba *phba = vport->phba; 2141 struct nvme_fc_port_info nfcp_info; 2142 struct nvme_fc_local_port *localport; 2143 struct lpfc_nvme_lport *lport; 2144 2145 /* Initialize this localport instance. The vport wwn usage ensures 2146 * that NPIV is accounted for. 2147 */ 2148 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); 2149 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; 2150 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 2151 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 2152 2153 /* We need to tell the transport layer + 1 because it takes page 2154 * alignment into account. When space for the SGL is allocated we 2155 * allocate + 3, one for cmd, one for rsp and one for this alignment 2156 */ 2157 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 2158 2159 /* Advertise how many hw queues we support based on cfg_hdw_queue, 2160 * which will not exceed cpu count. 2161 */ 2162 lpfc_nvme_template.max_hw_queues = phba->cfg_hdw_queue; 2163 2164 if (!IS_ENABLED(CONFIG_NVME_FC)) 2165 return ret; 2166 2167 /* localport is allocated from the stack, but the registration 2168 * call allocates heap memory as well as the private area. 2169 */ 2170 2171 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, 2172 &vport->phba->pcidev->dev, &localport); 2173 if (!ret) { 2174 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, 2175 "6005 Successfully registered local " 2176 "NVME port num %d, localP x%px, private " 2177 "x%px, sg_seg %d\n", 2178 localport->port_num, localport, 2179 localport->private, 2180 lpfc_nvme_template.max_sgl_segments); 2181 2182 /* Private is our lport size declared in the template. */ 2183 lport = (struct lpfc_nvme_lport *)localport->private; 2184 vport->localport = localport; 2185 lport->vport = vport; 2186 vport->nvmei_support = 1; 2187 2188 atomic_set(&lport->xmt_fcp_noxri, 0); 2189 atomic_set(&lport->xmt_fcp_bad_ndlp, 0); 2190 atomic_set(&lport->xmt_fcp_qdepth, 0); 2191 atomic_set(&lport->xmt_fcp_err, 0); 2192 atomic_set(&lport->xmt_fcp_wqerr, 0); 2193 atomic_set(&lport->xmt_fcp_abort, 0); 2194 atomic_set(&lport->xmt_ls_abort, 0); 2195 atomic_set(&lport->xmt_ls_err, 0); 2196 atomic_set(&lport->cmpl_fcp_xb, 0); 2197 atomic_set(&lport->cmpl_fcp_err, 0); 2198 atomic_set(&lport->cmpl_ls_xb, 0); 2199 atomic_set(&lport->cmpl_ls_err, 0); 2200 2201 atomic_set(&lport->fc4NvmeLsRequests, 0); 2202 atomic_set(&lport->fc4NvmeLsCmpls, 0); 2203 } 2204 2205 return ret; 2206} 2207 2208#if (IS_ENABLED(CONFIG_NVME_FC)) 2209/* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg. 2210 * 2211 * The driver has to wait for the host nvme transport to callback 2212 * indicating the localport has successfully unregistered all 2213 * resources. Since this is an uninterruptible wait, loop every ten 2214 * seconds and print a message indicating no progress. 2215 * 2216 * An uninterruptible wait is used because of the risk of transport-to- 2217 * driver state mismatch. 2218 */ 2219static void 2220lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport, 2221 struct lpfc_nvme_lport *lport, 2222 struct completion *lport_unreg_cmp) 2223{ 2224 u32 wait_tmo; 2225 int ret, i, pending = 0; 2226 struct lpfc_sli_ring *pring; 2227 struct lpfc_hba *phba = vport->phba; 2228 struct lpfc_sli4_hdw_queue *qp; 2229 int abts_scsi, abts_nvme; 2230 u16 nvmels_cnt; 2231 2232 /* Host transport has to clean up and confirm requiring an indefinite 2233 * wait. Print a message if a 10 second wait expires and renew the 2234 * wait. This is unexpected. 2235 */ 2236 wait_tmo = secs_to_jiffies(LPFC_NVME_WAIT_TMO); 2237 while (true) { 2238 ret = wait_for_completion_timeout(lport_unreg_cmp, wait_tmo); 2239 if (unlikely(!ret)) { 2240 pending = 0; 2241 abts_scsi = 0; 2242 abts_nvme = 0; 2243 nvmels_cnt = 0; 2244 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2245 qp = &phba->sli4_hba.hdwq[i]; 2246 if (!vport->localport || !qp || !qp->io_wq) 2247 return; 2248 2249 pring = qp->io_wq->pring; 2250 if (!pring) 2251 continue; 2252 pending += pring->txcmplq_cnt; 2253 abts_scsi += qp->abts_scsi_io_bufs; 2254 abts_nvme += qp->abts_nvme_io_bufs; 2255 } 2256 if (phba->sli4_hba.nvmels_wq) { 2257 pring = phba->sli4_hba.nvmels_wq->pring; 2258 if (pring) 2259 nvmels_cnt = pring->txcmplq_cnt; 2260 } 2261 if (!vport->localport || 2262 test_bit(HBA_PCI_ERR, &vport->phba->bit_flags) || 2263 phba->link_state == LPFC_HBA_ERROR || 2264 test_bit(FC_UNLOADING, &vport->load_flag)) 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:%d]. " 2270 "Renewing.\n", 2271 lport, vport->localport, pending, 2272 abts_scsi, abts_nvme, nvmels_cnt); 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 **/ 2293void 2294lpfc_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 2345void 2346lpfc_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 2381int 2382lpfc_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 2508 /* Only release reference if one was taken for this request */ 2509 if (!oldrport) 2510 lpfc_nlp_put(ndlp); 2511 } 2512 2513 return ret; 2514#else 2515 return 0; 2516#endif 2517} 2518 2519/* 2520 * lpfc_nvme_rescan_port - Check to see if we should rescan this remoteport 2521 * 2522 * If the ndlp represents an NVME Target, that we are logged into, 2523 * ping the NVME FC Transport layer to initiate a device rescan 2524 * on this remote NPort. 2525 */ 2526void 2527lpfc_nvme_rescan_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2528{ 2529#if (IS_ENABLED(CONFIG_NVME_FC)) 2530 struct lpfc_nvme_rport *nrport; 2531 struct nvme_fc_remote_port *remoteport = NULL; 2532 2533 spin_lock_irq(&ndlp->lock); 2534 nrport = lpfc_ndlp_get_nrport(ndlp); 2535 if (nrport) 2536 remoteport = nrport->remoteport; 2537 spin_unlock_irq(&ndlp->lock); 2538 2539 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2540 "6170 Rescan NPort DID x%06x type x%x " 2541 "state x%x nrport x%px remoteport x%px\n", 2542 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_state, 2543 nrport, remoteport); 2544 2545 if (!nrport || !remoteport) 2546 goto rescan_exit; 2547 2548 /* Rescan an NVME target in MAPPED state with DISCOVERY role set */ 2549 if (remoteport->port_role & FC_PORT_ROLE_NVME_DISCOVERY && 2550 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 2551 nvme_fc_rescan_remoteport(remoteport); 2552 2553 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2554 "6172 NVME rescanned DID x%06x " 2555 "port_state x%x\n", 2556 ndlp->nlp_DID, remoteport->port_state); 2557 } 2558 return; 2559 rescan_exit: 2560 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2561 "6169 Skip NVME Rport Rescan, NVME remoteport " 2562 "unregistered\n"); 2563#endif 2564} 2565 2566/* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. 2567 * 2568 * There is no notion of Devloss or rport recovery from the current 2569 * nvme_transport perspective. Loss of an rport just means IO cannot 2570 * be sent and recovery is completely up to the initator. 2571 * For now, the driver just unbinds the DID and port_role so that 2572 * no further IO can be issued. 2573 */ 2574void 2575lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2576{ 2577#if (IS_ENABLED(CONFIG_NVME_FC)) 2578 int ret; 2579 struct nvme_fc_local_port *localport; 2580 struct lpfc_nvme_lport *lport; 2581 struct lpfc_nvme_rport *rport; 2582 struct nvme_fc_remote_port *remoteport = NULL; 2583 2584 localport = vport->localport; 2585 2586 /* This is fundamental error. The localport is always 2587 * available until driver unload. Just exit. 2588 */ 2589 if (!localport) 2590 return; 2591 2592 lport = (struct lpfc_nvme_lport *)localport->private; 2593 if (!lport) 2594 goto input_err; 2595 2596 spin_lock_irq(&ndlp->lock); 2597 rport = lpfc_ndlp_get_nrport(ndlp); 2598 if (rport) 2599 remoteport = rport->remoteport; 2600 spin_unlock_irq(&ndlp->lock); 2601 if (!remoteport) 2602 goto input_err; 2603 2604 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2605 "6033 Unreg nvme remoteport x%px, portname x%llx, " 2606 "port_id x%06x, portstate x%x port type x%x " 2607 "refcnt %d\n", 2608 remoteport, remoteport->port_name, 2609 remoteport->port_id, remoteport->port_state, 2610 ndlp->nlp_type, kref_read(&ndlp->kref)); 2611 2612 /* Sanity check ndlp type. Only call for NVME ports. Don't 2613 * clear any rport state until the transport calls back. 2614 */ 2615 2616 if ((ndlp->nlp_type & NLP_NVME_TARGET) || 2617 (remoteport->port_role & FC_PORT_ROLE_NVME_TARGET)) { 2618 /* No concern about the role change on the nvme remoteport. 2619 * The transport will update it. 2620 */ 2621 spin_lock_irq(&ndlp->lock); 2622 ndlp->fc4_xpt_flags |= NVME_XPT_UNREG_WAIT; 2623 spin_unlock_irq(&ndlp->lock); 2624 2625 /* Don't let the host nvme transport keep sending keep-alives 2626 * on this remoteport. Vport is unloading, no recovery. The 2627 * return values is ignored. The upcall is a courtesy to the 2628 * transport. 2629 */ 2630 if (test_bit(FC_UNLOADING, &vport->load_flag) || 2631 unlikely(vport->phba->link_state == LPFC_HBA_ERROR)) 2632 (void)nvme_fc_set_remoteport_devloss(remoteport, 0); 2633 2634 ret = nvme_fc_unregister_remoteport(remoteport); 2635 2636 /* The driver no longer knows if the nrport memory is valid. 2637 * because the controller teardown process has begun and 2638 * is asynchronous. Break the binding in the ndlp. Also 2639 * remove the register ndlp reference to setup node release. 2640 */ 2641 ndlp->nrport = NULL; 2642 lpfc_nlp_put(ndlp); 2643 if (ret != 0) { 2644 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2645 "6167 NVME unregister failed %d " 2646 "port_state x%x\n", 2647 ret, remoteport->port_state); 2648 2649 if (test_bit(FC_UNLOADING, &vport->load_flag)) { 2650 /* Only 1 thread can drop the initial node 2651 * reference. Check if another thread has set 2652 * NLP_DROPPED. 2653 */ 2654 if (!test_and_set_bit(NLP_DROPPED, 2655 &ndlp->nlp_flag)) { 2656 lpfc_nlp_put(ndlp); 2657 return; 2658 } 2659 } 2660 } 2661 } 2662 return; 2663 2664 input_err: 2665#endif 2666 lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, 2667 "6168 State error: lport x%px, rport x%px FCID x%06x\n", 2668 vport->localport, ndlp->rport, ndlp->nlp_DID); 2669} 2670 2671/** 2672 * lpfc_sli4_nvme_pci_offline_aborted - Fast-path process of NVME xri abort 2673 * @phba: pointer to lpfc hba data structure. 2674 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2675 * 2676 * This routine is invoked by the worker thread to process a SLI4 fast-path 2677 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2678 * here. 2679 **/ 2680void 2681lpfc_sli4_nvme_pci_offline_aborted(struct lpfc_hba *phba, 2682 struct lpfc_io_buf *lpfc_ncmd) 2683{ 2684 struct nvmefc_fcp_req *nvme_cmd = NULL; 2685 2686 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2687 "6533 %s nvme_cmd %p tag x%x abort complete and " 2688 "xri released\n", __func__, 2689 lpfc_ncmd->nvmeCmd, 2690 lpfc_ncmd->cur_iocbq.iotag); 2691 2692 /* Aborted NVME commands are required to not complete 2693 * before the abort exchange command fully completes. 2694 * Once completed, it is available via the put list. 2695 */ 2696 if (lpfc_ncmd->nvmeCmd) { 2697 nvme_cmd = lpfc_ncmd->nvmeCmd; 2698 nvme_cmd->transferred_length = 0; 2699 nvme_cmd->rcv_rsplen = 0; 2700 nvme_cmd->status = NVME_SC_INTERNAL; 2701 nvme_cmd->done(nvme_cmd); 2702 lpfc_ncmd->nvmeCmd = NULL; 2703 } 2704 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2705} 2706 2707/** 2708 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort 2709 * @phba: pointer to lpfc hba data structure. 2710 * @axri: pointer to the fcp xri abort wcqe structure. 2711 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2712 * 2713 * This routine is invoked by the worker thread to process a SLI4 fast-path 2714 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2715 * here. 2716 **/ 2717void 2718lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba, 2719 struct sli4_wcqe_xri_aborted *axri, 2720 struct lpfc_io_buf *lpfc_ncmd) 2721{ 2722 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 2723 struct nvmefc_fcp_req *nvme_cmd = NULL; 2724 struct lpfc_nodelist *ndlp = lpfc_ncmd->ndlp; 2725 2726 2727 if (ndlp) 2728 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 2729 2730 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2731 "6311 nvme_cmd %p xri x%x tag x%x abort complete and " 2732 "xri released\n", 2733 lpfc_ncmd->nvmeCmd, xri, 2734 lpfc_ncmd->cur_iocbq.iotag); 2735 2736 /* Aborted NVME commands are required to not complete 2737 * before the abort exchange command fully completes. 2738 * Once completed, it is available via the put list. 2739 */ 2740 if (lpfc_ncmd->nvmeCmd) { 2741 nvme_cmd = lpfc_ncmd->nvmeCmd; 2742 nvme_cmd->done(nvme_cmd); 2743 lpfc_ncmd->nvmeCmd = NULL; 2744 } 2745 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2746} 2747 2748/** 2749 * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete 2750 * @phba: Pointer to HBA context object. 2751 * 2752 * This function flushes all wqes in the nvme rings and frees all resources 2753 * in the txcmplq. This function does not issue abort wqes for the IO 2754 * commands in txcmplq, they will just be returned with 2755 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI 2756 * slot has been permanently disabled. 2757 **/ 2758void 2759lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba) 2760{ 2761 struct lpfc_sli_ring *pring; 2762 u32 i, wait_cnt = 0; 2763 2764 if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.hdwq) 2765 return; 2766 2767 /* Cycle through all IO rings and make sure all outstanding 2768 * WQEs have been removed from the txcmplqs. 2769 */ 2770 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2771 if (!phba->sli4_hba.hdwq[i].io_wq) 2772 continue; 2773 pring = phba->sli4_hba.hdwq[i].io_wq->pring; 2774 2775 if (!pring) 2776 continue; 2777 2778 /* Retrieve everything on the txcmplq */ 2779 while (!list_empty(&pring->txcmplq)) { 2780 msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); 2781 wait_cnt++; 2782 2783 /* The sleep is 10mS. Every ten seconds, 2784 * dump a message. Something is wrong. 2785 */ 2786 if ((wait_cnt % 1000) == 0) { 2787 lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, 2788 "6178 NVME IO not empty, " 2789 "cnt %d\n", wait_cnt); 2790 } 2791 } 2792 } 2793 2794 /* Make sure HBA is alive */ 2795 lpfc_issue_hb_tmo(phba); 2796 2797} 2798 2799void 2800lpfc_nvme_cancel_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 2801 uint32_t stat, uint32_t param) 2802{ 2803#if (IS_ENABLED(CONFIG_NVME_FC)) 2804 struct lpfc_io_buf *lpfc_ncmd; 2805 struct nvmefc_fcp_req *nCmd; 2806 struct lpfc_wcqe_complete wcqe; 2807 struct lpfc_wcqe_complete *wcqep = &wcqe; 2808 2809 lpfc_ncmd = pwqeIn->io_buf; 2810 if (!lpfc_ncmd) { 2811 lpfc_sli_release_iocbq(phba, pwqeIn); 2812 return; 2813 } 2814 /* For abort iocb just return, IO iocb will do a done call */ 2815 if (bf_get(wqe_cmnd, &pwqeIn->wqe.gen_req.wqe_com) == 2816 CMD_ABORT_XRI_CX) { 2817 lpfc_sli_release_iocbq(phba, pwqeIn); 2818 return; 2819 } 2820 2821 spin_lock(&lpfc_ncmd->buf_lock); 2822 nCmd = lpfc_ncmd->nvmeCmd; 2823 if (!nCmd) { 2824 spin_unlock(&lpfc_ncmd->buf_lock); 2825 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2826 return; 2827 } 2828 spin_unlock(&lpfc_ncmd->buf_lock); 2829 2830 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2831 "6194 NVME Cancel xri %x\n", 2832 lpfc_ncmd->cur_iocbq.sli4_xritag); 2833 2834 wcqep->word0 = 0; 2835 bf_set(lpfc_wcqe_c_status, wcqep, stat); 2836 wcqep->parameter = param; 2837 wcqep->total_data_placed = 0; 2838 wcqep->word3 = 0; /* xb is 0 */ 2839 2840 /* Call release with XB=1 to queue the IO into the abort list. */ 2841 if (phba->sli.sli_flag & LPFC_SLI_ACTIVE) 2842 bf_set(lpfc_wcqe_c_xb, wcqep, 1); 2843 2844 memcpy(&pwqeIn->wcqe_cmpl, wcqep, sizeof(*wcqep)); 2845 (pwqeIn->cmd_cmpl)(phba, pwqeIn, pwqeIn); 2846#endif 2847} 2848 2849/** 2850 * lpfc_nvmels_flush_cmd - Clean up outstanding nvmels commands for a port 2851 * @phba: Pointer to HBA context object. 2852 * 2853 **/ 2854void 2855lpfc_nvmels_flush_cmd(struct lpfc_hba *phba) 2856{ 2857#if (IS_ENABLED(CONFIG_NVME_FC)) 2858 LIST_HEAD(cancel_list); 2859 struct lpfc_sli_ring *pring = NULL; 2860 struct lpfc_iocbq *piocb, *tmp_iocb; 2861 unsigned long iflags; 2862 2863 if (phba->sli4_hba.nvmels_wq) 2864 pring = phba->sli4_hba.nvmels_wq->pring; 2865 2866 if (unlikely(!pring)) 2867 return; 2868 2869 spin_lock_irqsave(&phba->hbalock, iflags); 2870 spin_lock(&pring->ring_lock); 2871 list_splice_init(&pring->txq, &cancel_list); 2872 pring->txq_cnt = 0; 2873 list_for_each_entry_safe(piocb, tmp_iocb, &pring->txcmplq, list) { 2874 if (piocb->cmd_flag & LPFC_IO_NVME_LS) { 2875 list_move_tail(&piocb->list, &cancel_list); 2876 pring->txcmplq_cnt--; 2877 piocb->cmd_flag &= ~LPFC_IO_ON_TXCMPLQ; 2878 } 2879 } 2880 spin_unlock(&pring->ring_lock); 2881 spin_unlock_irqrestore(&phba->hbalock, iflags); 2882 2883 if (!list_empty(&cancel_list)) 2884 lpfc_sli_cancel_iocbs(phba, &cancel_list, IOSTAT_LOCAL_REJECT, 2885 IOERR_SLI_DOWN); 2886#endif 2887}
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