1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 ********************************************************************/ 23 #include <linux/pci.h> 24 #include <linux/slab.h> 25 #include <linux/interrupt.h> 26 #include <linux/delay.h> 27 #include <asm/unaligned.h> 28 #include <linux/crc-t10dif.h> 29 #include <net/checksum.h> 30 31 #include <scsi/scsi.h> 32 #include <scsi/scsi_device.h> 33 #include <scsi/scsi_eh.h> 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_tcq.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include <linux/nvme.h> 40 #include <linux/nvme-fc-driver.h> 41 #include <linux/nvme-fc.h> 42 #include "lpfc_version.h" 43 #include "lpfc_hw4.h" 44 #include "lpfc_hw.h" 45 #include "lpfc_sli.h" 46 #include "lpfc_sli4.h" 47 #include "lpfc_nl.h" 48 #include "lpfc_disc.h" 49 #include "lpfc.h" 50 #include "lpfc_nvme.h" 51 #include "lpfc_scsi.h" 52 #include "lpfc_logmsg.h" 53 #include "lpfc_crtn.h" 54 #include "lpfc_vport.h" 55 #include "lpfc_debugfs.h" 56 57 /* NVME initiator-based functions */ 58 59 static struct lpfc_io_buf * 60 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 61 int idx, int expedite); 62 63 static void 64 lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_io_buf *); 65 66 static struct nvme_fc_port_template lpfc_nvme_template; 67 68 static union lpfc_wqe128 lpfc_iread_cmd_template; 69 static union lpfc_wqe128 lpfc_iwrite_cmd_template; 70 static union lpfc_wqe128 lpfc_icmnd_cmd_template; 71 72 /* Setup WQE templates for NVME IOs */ 73 void 74 lpfc_nvme_cmd_template(void) 75 { 76 union lpfc_wqe128 *wqe; 77 78 /* IREAD template */ 79 wqe = &lpfc_iread_cmd_template; 80 memset(wqe, 0, sizeof(union lpfc_wqe128)); 81 82 /* Word 0, 1, 2 - BDE is variable */ 83 84 /* Word 3 - cmd_buff_len, payload_offset_len is zero */ 85 86 /* Word 4 - total_xfer_len is variable */ 87 88 /* Word 5 - is zero */ 89 90 /* Word 6 - ctxt_tag, xri_tag is variable */ 91 92 /* Word 7 */ 93 bf_set(wqe_cmnd, &wqe->fcp_iread.wqe_com, CMD_FCP_IREAD64_WQE); 94 bf_set(wqe_pu, &wqe->fcp_iread.wqe_com, PARM_READ_CHECK); 95 bf_set(wqe_class, &wqe->fcp_iread.wqe_com, CLASS3); 96 bf_set(wqe_ct, &wqe->fcp_iread.wqe_com, SLI4_CT_RPI); 97 98 /* Word 8 - abort_tag is variable */ 99 100 /* Word 9 - reqtag is variable */ 101 102 /* Word 10 - dbde, wqes is variable */ 103 bf_set(wqe_qosd, &wqe->fcp_iread.wqe_com, 0); 104 bf_set(wqe_nvme, &wqe->fcp_iread.wqe_com, 1); 105 bf_set(wqe_iod, &wqe->fcp_iread.wqe_com, LPFC_WQE_IOD_READ); 106 bf_set(wqe_lenloc, &wqe->fcp_iread.wqe_com, LPFC_WQE_LENLOC_WORD4); 107 bf_set(wqe_dbde, &wqe->fcp_iread.wqe_com, 0); 108 bf_set(wqe_wqes, &wqe->fcp_iread.wqe_com, 1); 109 110 /* Word 11 - pbde is variable */ 111 bf_set(wqe_cmd_type, &wqe->fcp_iread.wqe_com, NVME_READ_CMD); 112 bf_set(wqe_cqid, &wqe->fcp_iread.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 113 bf_set(wqe_pbde, &wqe->fcp_iread.wqe_com, 1); 114 115 /* Word 12 - is zero */ 116 117 /* Word 13, 14, 15 - PBDE is variable */ 118 119 /* IWRITE template */ 120 wqe = &lpfc_iwrite_cmd_template; 121 memset(wqe, 0, sizeof(union lpfc_wqe128)); 122 123 /* Word 0, 1, 2 - BDE is variable */ 124 125 /* Word 3 - cmd_buff_len, payload_offset_len is zero */ 126 127 /* Word 4 - total_xfer_len is variable */ 128 129 /* Word 5 - initial_xfer_len is variable */ 130 131 /* Word 6 - ctxt_tag, xri_tag is variable */ 132 133 /* Word 7 */ 134 bf_set(wqe_cmnd, &wqe->fcp_iwrite.wqe_com, CMD_FCP_IWRITE64_WQE); 135 bf_set(wqe_pu, &wqe->fcp_iwrite.wqe_com, PARM_READ_CHECK); 136 bf_set(wqe_class, &wqe->fcp_iwrite.wqe_com, CLASS3); 137 bf_set(wqe_ct, &wqe->fcp_iwrite.wqe_com, SLI4_CT_RPI); 138 139 /* Word 8 - abort_tag is variable */ 140 141 /* Word 9 - reqtag is variable */ 142 143 /* Word 10 - dbde, wqes is variable */ 144 bf_set(wqe_qosd, &wqe->fcp_iwrite.wqe_com, 0); 145 bf_set(wqe_nvme, &wqe->fcp_iwrite.wqe_com, 1); 146 bf_set(wqe_iod, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_IOD_WRITE); 147 bf_set(wqe_lenloc, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_LENLOC_WORD4); 148 bf_set(wqe_dbde, &wqe->fcp_iwrite.wqe_com, 0); 149 bf_set(wqe_wqes, &wqe->fcp_iwrite.wqe_com, 1); 150 151 /* Word 11 - pbde is variable */ 152 bf_set(wqe_cmd_type, &wqe->fcp_iwrite.wqe_com, NVME_WRITE_CMD); 153 bf_set(wqe_cqid, &wqe->fcp_iwrite.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 154 bf_set(wqe_pbde, &wqe->fcp_iwrite.wqe_com, 1); 155 156 /* Word 12 - is zero */ 157 158 /* Word 13, 14, 15 - PBDE is variable */ 159 160 /* ICMND template */ 161 wqe = &lpfc_icmnd_cmd_template; 162 memset(wqe, 0, sizeof(union lpfc_wqe128)); 163 164 /* Word 0, 1, 2 - BDE is variable */ 165 166 /* Word 3 - payload_offset_len is variable */ 167 168 /* Word 4, 5 - is zero */ 169 170 /* Word 6 - ctxt_tag, xri_tag is variable */ 171 172 /* Word 7 */ 173 bf_set(wqe_cmnd, &wqe->fcp_icmd.wqe_com, CMD_FCP_ICMND64_WQE); 174 bf_set(wqe_pu, &wqe->fcp_icmd.wqe_com, 0); 175 bf_set(wqe_class, &wqe->fcp_icmd.wqe_com, CLASS3); 176 bf_set(wqe_ct, &wqe->fcp_icmd.wqe_com, SLI4_CT_RPI); 177 178 /* Word 8 - abort_tag is variable */ 179 180 /* Word 9 - reqtag is variable */ 181 182 /* Word 10 - dbde, wqes is variable */ 183 bf_set(wqe_qosd, &wqe->fcp_icmd.wqe_com, 1); 184 bf_set(wqe_nvme, &wqe->fcp_icmd.wqe_com, 1); 185 bf_set(wqe_iod, &wqe->fcp_icmd.wqe_com, LPFC_WQE_IOD_NONE); 186 bf_set(wqe_lenloc, &wqe->fcp_icmd.wqe_com, LPFC_WQE_LENLOC_NONE); 187 bf_set(wqe_dbde, &wqe->fcp_icmd.wqe_com, 0); 188 bf_set(wqe_wqes, &wqe->fcp_icmd.wqe_com, 1); 189 190 /* Word 11 */ 191 bf_set(wqe_cmd_type, &wqe->fcp_icmd.wqe_com, FCP_COMMAND); 192 bf_set(wqe_cqid, &wqe->fcp_icmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 193 bf_set(wqe_pbde, &wqe->fcp_icmd.wqe_com, 0); 194 195 /* Word 12, 13, 14, 15 - is zero */ 196 } 197 198 /** 199 * lpfc_nvme_create_queue - 200 * @lpfc_pnvme: Pointer to the driver's nvme instance data 201 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. 202 * @handle: An opaque driver handle used in follow-up calls. 203 * 204 * Driver registers this routine to preallocate and initialize any 205 * internal data structures to bind the @qidx to its internal IO queues. 206 * A hardware queue maps (qidx) to a specific driver MSI-X vector/EQ/CQ/WQ. 207 * 208 * Return value : 209 * 0 - Success 210 * -EINVAL - Unsupported input value. 211 * -ENOMEM - Could not alloc necessary memory 212 **/ 213 static int 214 lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport, 215 unsigned int qidx, u16 qsize, 216 void **handle) 217 { 218 struct lpfc_nvme_lport *lport; 219 struct lpfc_vport *vport; 220 struct lpfc_nvme_qhandle *qhandle; 221 char *str; 222 223 if (!pnvme_lport->private) 224 return -ENOMEM; 225 226 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 227 vport = lport->vport; 228 qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL); 229 if (qhandle == NULL) 230 return -ENOMEM; 231 232 qhandle->cpu_id = raw_smp_processor_id(); 233 qhandle->qidx = qidx; 234 /* 235 * NVME qidx == 0 is the admin queue, so both admin queue 236 * and first IO queue will use MSI-X vector and associated 237 * EQ/CQ/WQ at index 0. After that they are sequentially assigned. 238 */ 239 if (qidx) { 240 str = "IO "; /* IO queue */ 241 qhandle->index = ((qidx - 1) % 242 lpfc_nvme_template.max_hw_queues); 243 } else { 244 str = "ADM"; /* Admin queue */ 245 qhandle->index = qidx; 246 } 247 248 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 249 "6073 Binding %s HdwQueue %d (cpu %d) to " 250 "hdw_queue %d qhandle x%px\n", str, 251 qidx, qhandle->cpu_id, qhandle->index, qhandle); 252 *handle = (void *)qhandle; 253 return 0; 254 } 255 256 /** 257 * lpfc_nvme_delete_queue - 258 * @lpfc_pnvme: Pointer to the driver's nvme instance data 259 * @qidx: An cpu index used to affinitize IO queues and MSIX vectors. 260 * @handle: An opaque driver handle from lpfc_nvme_create_queue 261 * 262 * Driver registers this routine to free 263 * any internal data structures to bind the @qidx to its internal 264 * IO queues. 265 * 266 * Return value : 267 * 0 - Success 268 * TODO: What are the failure codes. 269 **/ 270 static void 271 lpfc_nvme_delete_queue(struct nvme_fc_local_port *pnvme_lport, 272 unsigned int qidx, 273 void *handle) 274 { 275 struct lpfc_nvme_lport *lport; 276 struct lpfc_vport *vport; 277 278 if (!pnvme_lport->private) 279 return; 280 281 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 282 vport = lport->vport; 283 284 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 285 "6001 ENTER. lpfc_pnvme x%px, qidx x%x qhandle x%px\n", 286 lport, qidx, handle); 287 kfree(handle); 288 } 289 290 static void 291 lpfc_nvme_localport_delete(struct nvme_fc_local_port *localport) 292 { 293 struct lpfc_nvme_lport *lport = localport->private; 294 295 lpfc_printf_vlog(lport->vport, KERN_INFO, LOG_NVME, 296 "6173 localport x%px delete complete\n", 297 lport); 298 299 /* release any threads waiting for the unreg to complete */ 300 if (lport->vport->localport) 301 complete(lport->lport_unreg_cmp); 302 } 303 304 /* lpfc_nvme_remoteport_delete 305 * 306 * @remoteport: Pointer to an nvme transport remoteport instance. 307 * 308 * This is a template downcall. NVME transport calls this function 309 * when it has completed the unregistration of a previously 310 * registered remoteport. 311 * 312 * Return value : 313 * None 314 */ 315 static void 316 lpfc_nvme_remoteport_delete(struct nvme_fc_remote_port *remoteport) 317 { 318 struct lpfc_nvme_rport *rport = remoteport->private; 319 struct lpfc_vport *vport; 320 struct lpfc_nodelist *ndlp; 321 322 ndlp = rport->ndlp; 323 if (!ndlp) 324 goto rport_err; 325 326 vport = ndlp->vport; 327 if (!vport) 328 goto rport_err; 329 330 /* Remove this rport from the lport's list - memory is owned by the 331 * transport. Remove the ndlp reference for the NVME transport before 332 * calling state machine to remove the node. 333 */ 334 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 335 "6146 remoteport delete of remoteport x%px\n", 336 remoteport); 337 spin_lock_irq(&vport->phba->hbalock); 338 339 /* The register rebind might have occurred before the delete 340 * downcall. Guard against this race. 341 */ 342 if (ndlp->upcall_flags & NLP_WAIT_FOR_UNREG) { 343 ndlp->nrport = NULL; 344 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG; 345 } 346 spin_unlock_irq(&vport->phba->hbalock); 347 348 /* Remove original register reference. The host transport 349 * won't reference this rport/remoteport any further. 350 */ 351 lpfc_nlp_put(ndlp); 352 353 rport_err: 354 return; 355 } 356 357 static void 358 lpfc_nvme_cmpl_gen_req(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 359 struct lpfc_wcqe_complete *wcqe) 360 { 361 struct lpfc_vport *vport = cmdwqe->vport; 362 struct lpfc_nvme_lport *lport; 363 uint32_t status; 364 struct nvmefc_ls_req *pnvme_lsreq; 365 struct lpfc_dmabuf *buf_ptr; 366 struct lpfc_nodelist *ndlp; 367 368 pnvme_lsreq = (struct nvmefc_ls_req *)cmdwqe->context2; 369 status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; 370 371 if (vport->localport) { 372 lport = (struct lpfc_nvme_lport *)vport->localport->private; 373 if (lport) { 374 atomic_inc(&lport->fc4NvmeLsCmpls); 375 if (status) { 376 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 377 atomic_inc(&lport->cmpl_ls_xb); 378 atomic_inc(&lport->cmpl_ls_err); 379 } 380 } 381 } 382 383 ndlp = (struct lpfc_nodelist *)cmdwqe->context1; 384 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 385 "6047 nvme cmpl Enter " 386 "Data %px DID %x Xri: %x status %x reason x%x " 387 "cmd:x%px lsreg:x%px bmp:x%px ndlp:x%px\n", 388 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 389 cmdwqe->sli4_xritag, status, 390 (wcqe->parameter & 0xffff), 391 cmdwqe, pnvme_lsreq, cmdwqe->context3, ndlp); 392 393 lpfc_nvmeio_data(phba, "NVME LS CMPL: xri x%x stat x%x parm x%x\n", 394 cmdwqe->sli4_xritag, status, wcqe->parameter); 395 396 if (cmdwqe->context3) { 397 buf_ptr = (struct lpfc_dmabuf *)cmdwqe->context3; 398 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys); 399 kfree(buf_ptr); 400 cmdwqe->context3 = NULL; 401 } 402 if (pnvme_lsreq->done) 403 pnvme_lsreq->done(pnvme_lsreq, status); 404 else 405 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 406 "6046 nvme cmpl without done call back? " 407 "Data %px DID %x Xri: %x status %x\n", 408 pnvme_lsreq, ndlp ? ndlp->nlp_DID : 0, 409 cmdwqe->sli4_xritag, status); 410 if (ndlp) { 411 lpfc_nlp_put(ndlp); 412 cmdwqe->context1 = NULL; 413 } 414 lpfc_sli_release_iocbq(phba, cmdwqe); 415 } 416 417 static int 418 lpfc_nvme_gen_req(struct lpfc_vport *vport, struct lpfc_dmabuf *bmp, 419 struct lpfc_dmabuf *inp, 420 struct nvmefc_ls_req *pnvme_lsreq, 421 void (*cmpl)(struct lpfc_hba *, struct lpfc_iocbq *, 422 struct lpfc_wcqe_complete *), 423 struct lpfc_nodelist *ndlp, uint32_t num_entry, 424 uint32_t tmo, uint8_t retry) 425 { 426 struct lpfc_hba *phba = vport->phba; 427 union lpfc_wqe128 *wqe; 428 struct lpfc_iocbq *genwqe; 429 struct ulp_bde64 *bpl; 430 struct ulp_bde64 bde; 431 int i, rc, xmit_len, first_len; 432 433 /* Allocate buffer for command WQE */ 434 genwqe = lpfc_sli_get_iocbq(phba); 435 if (genwqe == NULL) 436 return 1; 437 438 wqe = &genwqe->wqe; 439 /* Initialize only 64 bytes */ 440 memset(wqe, 0, sizeof(union lpfc_wqe)); 441 442 genwqe->context3 = (uint8_t *)bmp; 443 genwqe->iocb_flag |= LPFC_IO_NVME_LS; 444 445 /* Save for completion so we can release these resources */ 446 genwqe->context1 = lpfc_nlp_get(ndlp); 447 genwqe->context2 = (uint8_t *)pnvme_lsreq; 448 /* Fill in payload, bp points to frame payload */ 449 450 if (!tmo) 451 /* FC spec states we need 3 * ratov for CT requests */ 452 tmo = (3 * phba->fc_ratov); 453 454 /* For this command calculate the xmit length of the request bde. */ 455 xmit_len = 0; 456 first_len = 0; 457 bpl = (struct ulp_bde64 *)bmp->virt; 458 for (i = 0; i < num_entry; i++) { 459 bde.tus.w = bpl[i].tus.w; 460 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) 461 break; 462 xmit_len += bde.tus.f.bdeSize; 463 if (i == 0) 464 first_len = xmit_len; 465 } 466 467 genwqe->rsvd2 = num_entry; 468 genwqe->hba_wqidx = 0; 469 470 /* Words 0 - 2 */ 471 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 472 wqe->generic.bde.tus.f.bdeSize = first_len; 473 wqe->generic.bde.addrLow = bpl[0].addrLow; 474 wqe->generic.bde.addrHigh = bpl[0].addrHigh; 475 476 /* Word 3 */ 477 wqe->gen_req.request_payload_len = first_len; 478 479 /* Word 4 */ 480 481 /* Word 5 */ 482 bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0); 483 bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1); 484 bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1); 485 bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ); 486 bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME); 487 488 /* Word 6 */ 489 bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com, 490 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 491 bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag); 492 493 /* Word 7 */ 494 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1)); 495 bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3); 496 bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE); 497 bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI); 498 499 /* Word 8 */ 500 wqe->gen_req.wqe_com.abort_tag = genwqe->iotag; 501 502 /* Word 9 */ 503 bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag); 504 505 /* Word 10 */ 506 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); 507 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); 508 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); 509 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); 510 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); 511 512 /* Word 11 */ 513 bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 514 bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND); 515 516 517 /* Issue GEN REQ WQE for NPORT <did> */ 518 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 519 "6050 Issue GEN REQ WQE to NPORT x%x " 520 "Data: x%x x%x wq:x%px lsreq:x%px bmp:x%px " 521 "xmit:%d 1st:%d\n", 522 ndlp->nlp_DID, genwqe->iotag, 523 vport->port_state, 524 genwqe, pnvme_lsreq, bmp, xmit_len, first_len); 525 genwqe->wqe_cmpl = cmpl; 526 genwqe->iocb_cmpl = NULL; 527 genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT; 528 genwqe->vport = vport; 529 genwqe->retry = retry; 530 531 lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n", 532 genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID); 533 534 rc = lpfc_sli4_issue_wqe(phba, &phba->sli4_hba.hdwq[0], genwqe); 535 if (rc) { 536 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 537 "6045 Issue GEN REQ WQE to NPORT x%x " 538 "Data: x%x x%x\n", 539 ndlp->nlp_DID, genwqe->iotag, 540 vport->port_state); 541 lpfc_sli_release_iocbq(phba, genwqe); 542 return 1; 543 } 544 return 0; 545 } 546 547 /** 548 * lpfc_nvme_ls_req - Issue an Link Service request 549 * @lpfc_pnvme: Pointer to the driver's nvme instance data 550 * @lpfc_nvme_lport: Pointer to the driver's local port data 551 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 552 * 553 * Driver registers this routine to handle any link service request 554 * from the nvme_fc transport to a remote nvme-aware port. 555 * 556 * Return value : 557 * 0 - Success 558 * TODO: What are the failure codes. 559 **/ 560 static int 561 lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, 562 struct nvme_fc_remote_port *pnvme_rport, 563 struct nvmefc_ls_req *pnvme_lsreq) 564 { 565 int ret = 0; 566 struct lpfc_nvme_lport *lport; 567 struct lpfc_nvme_rport *rport; 568 struct lpfc_vport *vport; 569 struct lpfc_nodelist *ndlp; 570 struct ulp_bde64 *bpl; 571 struct lpfc_dmabuf *bmp; 572 uint16_t ntype, nstate; 573 574 /* there are two dma buf in the request, actually there is one and 575 * the second one is just the start address + cmd size. 576 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped 577 * in a lpfc_dmabuf struct. When freeing we just free the wrapper 578 * because the nvem layer owns the data bufs. 579 * We do not have to break these packets open, we don't care what is in 580 * them. And we do not have to look at the resonse data, we only care 581 * that we got a response. All of the caring is going to happen in the 582 * nvme-fc layer. 583 */ 584 585 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 586 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 587 if (unlikely(!lport) || unlikely(!rport)) 588 return -EINVAL; 589 590 vport = lport->vport; 591 592 if (vport->load_flag & FC_UNLOADING) 593 return -ENODEV; 594 595 /* Need the ndlp. It is stored in the driver's rport. */ 596 ndlp = rport->ndlp; 597 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 598 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 599 "6051 Remoteport x%px, rport has invalid ndlp. " 600 "Failing LS Req\n", pnvme_rport); 601 return -ENODEV; 602 } 603 604 /* The remote node has to be a mapped nvme target or an 605 * unmapped nvme initiator or it's an error. 606 */ 607 ntype = ndlp->nlp_type; 608 nstate = ndlp->nlp_state; 609 if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) || 610 (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) { 611 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 612 "6088 DID x%06x not ready for " 613 "IO. State x%x, Type x%x\n", 614 pnvme_rport->port_id, 615 ndlp->nlp_state, ndlp->nlp_type); 616 return -ENODEV; 617 } 618 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 619 if (!bmp) { 620 621 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 622 "6044 Could not find node for DID %x\n", 623 pnvme_rport->port_id); 624 return 2; 625 } 626 INIT_LIST_HEAD(&bmp->list); 627 bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys)); 628 if (!bmp->virt) { 629 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 630 "6042 Could not find node for DID %x\n", 631 pnvme_rport->port_id); 632 kfree(bmp); 633 return 3; 634 } 635 bpl = (struct ulp_bde64 *)bmp->virt; 636 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma)); 637 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma)); 638 bpl->tus.f.bdeFlags = 0; 639 bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen; 640 bpl->tus.w = le32_to_cpu(bpl->tus.w); 641 bpl++; 642 643 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma)); 644 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma)); 645 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 646 bpl->tus.f.bdeSize = pnvme_lsreq->rsplen; 647 bpl->tus.w = le32_to_cpu(bpl->tus.w); 648 649 /* Expand print to include key fields. */ 650 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 651 "6149 Issue LS Req to DID 0x%06x lport x%px, " 652 "rport x%px lsreq x%px rqstlen:%d rsplen:%d " 653 "%pad %pad\n", 654 ndlp->nlp_DID, pnvme_lport, pnvme_rport, 655 pnvme_lsreq, pnvme_lsreq->rqstlen, 656 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 657 &pnvme_lsreq->rspdma); 658 659 atomic_inc(&lport->fc4NvmeLsRequests); 660 661 /* Hardcode the wait to 30 seconds. Connections are failing otherwise. 662 * This code allows it all to work. 663 */ 664 ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr, 665 pnvme_lsreq, lpfc_nvme_cmpl_gen_req, 666 ndlp, 2, 30, 0); 667 if (ret != WQE_SUCCESS) { 668 atomic_inc(&lport->xmt_ls_err); 669 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 670 "6052 EXIT. issue ls wqe failed lport x%px, " 671 "rport x%px lsreq x%px Status %x DID %x\n", 672 pnvme_lport, pnvme_rport, pnvme_lsreq, 673 ret, ndlp->nlp_DID); 674 lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys); 675 kfree(bmp); 676 return ret; 677 } 678 679 /* Stub in routine and return 0 for now. */ 680 return ret; 681 } 682 683 /** 684 * lpfc_nvme_ls_abort - Issue an Link Service request 685 * @lpfc_pnvme: Pointer to the driver's nvme instance data 686 * @lpfc_nvme_lport: Pointer to the driver's local port data 687 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 688 * 689 * Driver registers this routine to handle any link service request 690 * from the nvme_fc transport to a remote nvme-aware port. 691 * 692 * Return value : 693 * 0 - Success 694 * TODO: What are the failure codes. 695 **/ 696 static void 697 lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport, 698 struct nvme_fc_remote_port *pnvme_rport, 699 struct nvmefc_ls_req *pnvme_lsreq) 700 { 701 struct lpfc_nvme_lport *lport; 702 struct lpfc_vport *vport; 703 struct lpfc_hba *phba; 704 struct lpfc_nodelist *ndlp; 705 LIST_HEAD(abort_list); 706 struct lpfc_sli_ring *pring; 707 struct lpfc_iocbq *wqe, *next_wqe; 708 709 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 710 if (unlikely(!lport)) 711 return; 712 vport = lport->vport; 713 phba = vport->phba; 714 715 if (vport->load_flag & FC_UNLOADING) 716 return; 717 718 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); 719 if (!ndlp) { 720 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 721 "6049 Could not find node for DID %x\n", 722 pnvme_rport->port_id); 723 return; 724 } 725 726 /* Expand print to include key fields. */ 727 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 728 "6040 ENTER. lport x%px, rport x%px lsreq x%px rqstlen:%d " 729 "rsplen:%d %pad %pad\n", 730 pnvme_lport, pnvme_rport, 731 pnvme_lsreq, pnvme_lsreq->rqstlen, 732 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 733 &pnvme_lsreq->rspdma); 734 735 /* 736 * Lock the ELS ring txcmplq and build a local list of all ELS IOs 737 * that need an ABTS. The IOs need to stay on the txcmplq so that 738 * the abort operation completes them successfully. 739 */ 740 pring = phba->sli4_hba.nvmels_wq->pring; 741 spin_lock_irq(&phba->hbalock); 742 spin_lock(&pring->ring_lock); 743 list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) { 744 /* Add to abort_list on on NDLP match. */ 745 if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) { 746 wqe->iocb_flag |= LPFC_DRIVER_ABORTED; 747 list_add_tail(&wqe->dlist, &abort_list); 748 } 749 } 750 spin_unlock(&pring->ring_lock); 751 spin_unlock_irq(&phba->hbalock); 752 753 /* Abort the targeted IOs and remove them from the abort list. */ 754 list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) { 755 atomic_inc(&lport->xmt_ls_abort); 756 spin_lock_irq(&phba->hbalock); 757 list_del_init(&wqe->dlist); 758 lpfc_sli_issue_abort_iotag(phba, pring, wqe); 759 spin_unlock_irq(&phba->hbalock); 760 } 761 } 762 763 /* Fix up the existing sgls for NVME IO. */ 764 static inline void 765 lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport, 766 struct lpfc_io_buf *lpfc_ncmd, 767 struct nvmefc_fcp_req *nCmd) 768 { 769 struct lpfc_hba *phba = vport->phba; 770 struct sli4_sge *sgl; 771 union lpfc_wqe128 *wqe; 772 uint32_t *wptr, *dptr; 773 774 /* 775 * Get a local pointer to the built-in wqe and correct 776 * the cmd size to match NVME's 96 bytes and fix 777 * the dma address. 778 */ 779 780 wqe = &lpfc_ncmd->cur_iocbq.wqe; 781 782 /* 783 * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to 784 * match NVME. NVME sends 96 bytes. Also, use the 785 * nvme commands command and response dma addresses 786 * rather than the virtual memory to ease the restore 787 * operation. 788 */ 789 sgl = lpfc_ncmd->dma_sgl; 790 sgl->sge_len = cpu_to_le32(nCmd->cmdlen); 791 if (phba->cfg_nvme_embed_cmd) { 792 sgl->addr_hi = 0; 793 sgl->addr_lo = 0; 794 795 /* Word 0-2 - NVME CMND IU (embedded payload) */ 796 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED; 797 wqe->generic.bde.tus.f.bdeSize = 56; 798 wqe->generic.bde.addrHigh = 0; 799 wqe->generic.bde.addrLow = 64; /* Word 16 */ 800 801 /* Word 10 - dbde is 0, wqes is 1 in template */ 802 803 /* 804 * Embed the payload in the last half of the WQE 805 * WQE words 16-30 get the NVME CMD IU payload 806 * 807 * WQE words 16-19 get payload Words 1-4 808 * WQE words 20-21 get payload Words 6-7 809 * WQE words 22-29 get payload Words 16-23 810 */ 811 wptr = &wqe->words[16]; /* WQE ptr */ 812 dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */ 813 dptr++; /* Skip Word 0 in payload */ 814 815 *wptr++ = *dptr++; /* Word 1 */ 816 *wptr++ = *dptr++; /* Word 2 */ 817 *wptr++ = *dptr++; /* Word 3 */ 818 *wptr++ = *dptr++; /* Word 4 */ 819 dptr++; /* Skip Word 5 in payload */ 820 *wptr++ = *dptr++; /* Word 6 */ 821 *wptr++ = *dptr++; /* Word 7 */ 822 dptr += 8; /* Skip Words 8-15 in payload */ 823 *wptr++ = *dptr++; /* Word 16 */ 824 *wptr++ = *dptr++; /* Word 17 */ 825 *wptr++ = *dptr++; /* Word 18 */ 826 *wptr++ = *dptr++; /* Word 19 */ 827 *wptr++ = *dptr++; /* Word 20 */ 828 *wptr++ = *dptr++; /* Word 21 */ 829 *wptr++ = *dptr++; /* Word 22 */ 830 *wptr = *dptr; /* Word 23 */ 831 } else { 832 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->cmddma)); 833 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->cmddma)); 834 835 /* Word 0-2 - NVME CMND IU Inline BDE */ 836 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 837 wqe->generic.bde.tus.f.bdeSize = nCmd->cmdlen; 838 wqe->generic.bde.addrHigh = sgl->addr_hi; 839 wqe->generic.bde.addrLow = sgl->addr_lo; 840 841 /* Word 10 */ 842 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1); 843 bf_set(wqe_wqes, &wqe->generic.wqe_com, 0); 844 } 845 846 sgl++; 847 848 /* Setup the physical region for the FCP RSP */ 849 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma)); 850 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma)); 851 sgl->word2 = le32_to_cpu(sgl->word2); 852 if (nCmd->sg_cnt) 853 bf_set(lpfc_sli4_sge_last, sgl, 0); 854 else 855 bf_set(lpfc_sli4_sge_last, sgl, 1); 856 sgl->word2 = cpu_to_le32(sgl->word2); 857 sgl->sge_len = cpu_to_le32(nCmd->rsplen); 858 } 859 860 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 861 static void 862 lpfc_nvme_ktime(struct lpfc_hba *phba, 863 struct lpfc_io_buf *lpfc_ncmd) 864 { 865 uint64_t seg1, seg2, seg3, seg4; 866 uint64_t segsum; 867 868 if (!lpfc_ncmd->ts_last_cmd || 869 !lpfc_ncmd->ts_cmd_start || 870 !lpfc_ncmd->ts_cmd_wqput || 871 !lpfc_ncmd->ts_isr_cmpl || 872 !lpfc_ncmd->ts_data_nvme) 873 return; 874 875 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_cmd_start) 876 return; 877 if (lpfc_ncmd->ts_cmd_start < lpfc_ncmd->ts_last_cmd) 878 return; 879 if (lpfc_ncmd->ts_cmd_wqput < lpfc_ncmd->ts_cmd_start) 880 return; 881 if (lpfc_ncmd->ts_isr_cmpl < lpfc_ncmd->ts_cmd_wqput) 882 return; 883 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_isr_cmpl) 884 return; 885 /* 886 * Segment 1 - Time from Last FCP command cmpl is handed 887 * off to NVME Layer to start of next command. 888 * Segment 2 - Time from Driver receives a IO cmd start 889 * from NVME Layer to WQ put is done on IO cmd. 890 * Segment 3 - Time from Driver WQ put is done on IO cmd 891 * to MSI-X ISR for IO cmpl. 892 * Segment 4 - Time from MSI-X ISR for IO cmpl to when 893 * cmpl is handled off to the NVME Layer. 894 */ 895 seg1 = lpfc_ncmd->ts_cmd_start - lpfc_ncmd->ts_last_cmd; 896 if (seg1 > 5000000) /* 5 ms - for sequential IOs only */ 897 seg1 = 0; 898 899 /* Calculate times relative to start of IO */ 900 seg2 = (lpfc_ncmd->ts_cmd_wqput - lpfc_ncmd->ts_cmd_start); 901 segsum = seg2; 902 seg3 = lpfc_ncmd->ts_isr_cmpl - lpfc_ncmd->ts_cmd_start; 903 if (segsum > seg3) 904 return; 905 seg3 -= segsum; 906 segsum += seg3; 907 908 seg4 = lpfc_ncmd->ts_data_nvme - lpfc_ncmd->ts_cmd_start; 909 if (segsum > seg4) 910 return; 911 seg4 -= segsum; 912 913 phba->ktime_data_samples++; 914 phba->ktime_seg1_total += seg1; 915 if (seg1 < phba->ktime_seg1_min) 916 phba->ktime_seg1_min = seg1; 917 else if (seg1 > phba->ktime_seg1_max) 918 phba->ktime_seg1_max = seg1; 919 phba->ktime_seg2_total += seg2; 920 if (seg2 < phba->ktime_seg2_min) 921 phba->ktime_seg2_min = seg2; 922 else if (seg2 > phba->ktime_seg2_max) 923 phba->ktime_seg2_max = seg2; 924 phba->ktime_seg3_total += seg3; 925 if (seg3 < phba->ktime_seg3_min) 926 phba->ktime_seg3_min = seg3; 927 else if (seg3 > phba->ktime_seg3_max) 928 phba->ktime_seg3_max = seg3; 929 phba->ktime_seg4_total += seg4; 930 if (seg4 < phba->ktime_seg4_min) 931 phba->ktime_seg4_min = seg4; 932 else if (seg4 > phba->ktime_seg4_max) 933 phba->ktime_seg4_max = seg4; 934 935 lpfc_ncmd->ts_last_cmd = 0; 936 lpfc_ncmd->ts_cmd_start = 0; 937 lpfc_ncmd->ts_cmd_wqput = 0; 938 lpfc_ncmd->ts_isr_cmpl = 0; 939 lpfc_ncmd->ts_data_nvme = 0; 940 } 941 #endif 942 943 /** 944 * lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO 945 * @lpfc_pnvme: Pointer to the driver's nvme instance data 946 * @lpfc_nvme_lport: Pointer to the driver's local port data 947 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 948 * 949 * Driver registers this routine as it io request handler. This 950 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 951 * data structure to the rport indicated in @lpfc_nvme_rport. 952 * 953 * Return value : 954 * 0 - Success 955 * TODO: What are the failure codes. 956 **/ 957 static void 958 lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 959 struct lpfc_wcqe_complete *wcqe) 960 { 961 struct lpfc_io_buf *lpfc_ncmd = 962 (struct lpfc_io_buf *)pwqeIn->context1; 963 struct lpfc_vport *vport = pwqeIn->vport; 964 struct nvmefc_fcp_req *nCmd; 965 struct nvme_fc_ersp_iu *ep; 966 struct nvme_fc_cmd_iu *cp; 967 struct lpfc_nodelist *ndlp; 968 struct lpfc_nvme_fcpreq_priv *freqpriv; 969 struct lpfc_nvme_lport *lport; 970 uint32_t code, status, idx; 971 uint16_t cid, sqhd, data; 972 uint32_t *ptr; 973 974 /* Sanity check on return of outstanding command */ 975 if (!lpfc_ncmd) { 976 lpfc_printf_vlog(vport, KERN_ERR, 977 LOG_NODE | LOG_NVME_IOERR, 978 "6071 Null lpfc_ncmd pointer. No " 979 "release, skip completion\n"); 980 return; 981 } 982 983 /* Guard against abort handler being called at same time */ 984 spin_lock(&lpfc_ncmd->buf_lock); 985 986 if (!lpfc_ncmd->nvmeCmd) { 987 spin_unlock(&lpfc_ncmd->buf_lock); 988 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 989 "6066 Missing cmpl ptrs: lpfc_ncmd x%px, " 990 "nvmeCmd x%px\n", 991 lpfc_ncmd, lpfc_ncmd->nvmeCmd); 992 993 /* Release the lpfc_ncmd regardless of the missing elements. */ 994 lpfc_release_nvme_buf(phba, lpfc_ncmd); 995 return; 996 } 997 nCmd = lpfc_ncmd->nvmeCmd; 998 status = bf_get(lpfc_wcqe_c_status, wcqe); 999 1000 idx = lpfc_ncmd->cur_iocbq.hba_wqidx; 1001 phba->sli4_hba.hdwq[idx].nvme_cstat.io_cmpls++; 1002 1003 if (unlikely(status && vport->localport)) { 1004 lport = (struct lpfc_nvme_lport *)vport->localport->private; 1005 if (lport) { 1006 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 1007 atomic_inc(&lport->cmpl_fcp_xb); 1008 atomic_inc(&lport->cmpl_fcp_err); 1009 } 1010 } 1011 1012 lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n", 1013 lpfc_ncmd->cur_iocbq.sli4_xritag, 1014 status, wcqe->parameter); 1015 /* 1016 * Catch race where our node has transitioned, but the 1017 * transport is still transitioning. 1018 */ 1019 ndlp = lpfc_ncmd->ndlp; 1020 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 1021 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 1022 "6062 Ignoring NVME cmpl. No ndlp\n"); 1023 goto out_err; 1024 } 1025 1026 code = bf_get(lpfc_wcqe_c_code, wcqe); 1027 if (code == CQE_CODE_NVME_ERSP) { 1028 /* For this type of CQE, we need to rebuild the rsp */ 1029 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; 1030 1031 /* 1032 * Get Command Id from cmd to plug into response. This 1033 * code is not needed in the next NVME Transport drop. 1034 */ 1035 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; 1036 cid = cp->sqe.common.command_id; 1037 1038 /* 1039 * RSN is in CQE word 2 1040 * SQHD is in CQE Word 3 bits 15:0 1041 * Cmd Specific info is in CQE Word 1 1042 * and in CQE Word 0 bits 15:0 1043 */ 1044 sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe); 1045 1046 /* Now lets build the NVME ERSP IU */ 1047 ep->iu_len = cpu_to_be16(8); 1048 ep->rsn = wcqe->parameter; 1049 ep->xfrd_len = cpu_to_be32(nCmd->payload_length); 1050 ep->rsvd12 = 0; 1051 ptr = (uint32_t *)&ep->cqe.result.u64; 1052 *ptr++ = wcqe->total_data_placed; 1053 data = bf_get(lpfc_wcqe_c_ersp0, wcqe); 1054 *ptr = (uint32_t)data; 1055 ep->cqe.sq_head = sqhd; 1056 ep->cqe.sq_id = nCmd->sqid; 1057 ep->cqe.command_id = cid; 1058 ep->cqe.status = 0; 1059 1060 lpfc_ncmd->status = IOSTAT_SUCCESS; 1061 lpfc_ncmd->result = 0; 1062 nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN; 1063 nCmd->transferred_length = nCmd->payload_length; 1064 } else { 1065 lpfc_ncmd->status = (status & LPFC_IOCB_STATUS_MASK); 1066 lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 1067 1068 /* For NVME, the only failure path that results in an 1069 * IO error is when the adapter rejects it. All other 1070 * conditions are a success case and resolved by the 1071 * transport. 1072 * IOSTAT_FCP_RSP_ERROR means: 1073 * 1. Length of data received doesn't match total 1074 * transfer length in WQE 1075 * 2. If the RSP payload does NOT match these cases: 1076 * a. RSP length 12/24 bytes and all zeros 1077 * b. NVME ERSP 1078 */ 1079 switch (lpfc_ncmd->status) { 1080 case IOSTAT_SUCCESS: 1081 nCmd->transferred_length = wcqe->total_data_placed; 1082 nCmd->rcv_rsplen = 0; 1083 nCmd->status = 0; 1084 break; 1085 case IOSTAT_FCP_RSP_ERROR: 1086 nCmd->transferred_length = wcqe->total_data_placed; 1087 nCmd->rcv_rsplen = wcqe->parameter; 1088 nCmd->status = 0; 1089 /* Sanity check */ 1090 if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN) 1091 break; 1092 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 1093 "6081 NVME Completion Protocol Error: " 1094 "xri %x status x%x result x%x " 1095 "placed x%x\n", 1096 lpfc_ncmd->cur_iocbq.sli4_xritag, 1097 lpfc_ncmd->status, lpfc_ncmd->result, 1098 wcqe->total_data_placed); 1099 break; 1100 case IOSTAT_LOCAL_REJECT: 1101 /* Let fall through to set command final state. */ 1102 if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED) 1103 lpfc_printf_vlog(vport, KERN_INFO, 1104 LOG_NVME_IOERR, 1105 "6032 Delay Aborted cmd x%px " 1106 "nvme cmd x%px, xri x%x, " 1107 "xb %d\n", 1108 lpfc_ncmd, nCmd, 1109 lpfc_ncmd->cur_iocbq.sli4_xritag, 1110 bf_get(lpfc_wcqe_c_xb, wcqe)); 1111 /* fall through */ 1112 default: 1113 out_err: 1114 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1115 "6072 NVME Completion Error: xri %x " 1116 "status x%x result x%x [x%x] " 1117 "placed x%x\n", 1118 lpfc_ncmd->cur_iocbq.sli4_xritag, 1119 lpfc_ncmd->status, lpfc_ncmd->result, 1120 wcqe->parameter, 1121 wcqe->total_data_placed); 1122 nCmd->transferred_length = 0; 1123 nCmd->rcv_rsplen = 0; 1124 nCmd->status = NVME_SC_INTERNAL; 1125 } 1126 } 1127 1128 /* pick up SLI4 exhange busy condition */ 1129 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 1130 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 1131 else 1132 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 1133 1134 /* Update stats and complete the IO. There is 1135 * no need for dma unprep because the nvme_transport 1136 * owns the dma address. 1137 */ 1138 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1139 if (lpfc_ncmd->ts_cmd_start) { 1140 lpfc_ncmd->ts_isr_cmpl = pwqeIn->isr_timestamp; 1141 lpfc_ncmd->ts_data_nvme = ktime_get_ns(); 1142 phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme; 1143 lpfc_nvme_ktime(phba, lpfc_ncmd); 1144 } 1145 if (unlikely(phba->cpucheck_on & LPFC_CHECK_NVME_IO)) { 1146 uint32_t cpu; 1147 idx = lpfc_ncmd->cur_iocbq.hba_wqidx; 1148 cpu = raw_smp_processor_id(); 1149 if (cpu < LPFC_CHECK_CPU_CNT) { 1150 if (lpfc_ncmd->cpu != cpu) 1151 lpfc_printf_vlog(vport, 1152 KERN_INFO, LOG_NVME_IOERR, 1153 "6701 CPU Check cmpl: " 1154 "cpu %d expect %d\n", 1155 cpu, lpfc_ncmd->cpu); 1156 phba->sli4_hba.hdwq[idx].cpucheck_cmpl_io[cpu]++; 1157 } 1158 } 1159 #endif 1160 1161 /* NVME targets need completion held off until the abort exchange 1162 * completes unless the NVME Rport is getting unregistered. 1163 */ 1164 1165 if (!(lpfc_ncmd->flags & LPFC_SBUF_XBUSY)) { 1166 freqpriv = nCmd->private; 1167 freqpriv->nvme_buf = NULL; 1168 lpfc_ncmd->nvmeCmd = NULL; 1169 spin_unlock(&lpfc_ncmd->buf_lock); 1170 nCmd->done(nCmd); 1171 } else 1172 spin_unlock(&lpfc_ncmd->buf_lock); 1173 1174 /* Call release with XB=1 to queue the IO into the abort list. */ 1175 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1176 } 1177 1178 1179 /** 1180 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO 1181 * @lpfc_pnvme: Pointer to the driver's nvme instance data 1182 * @lpfc_nvme_lport: Pointer to the driver's local port data 1183 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1184 * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 1185 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1186 * 1187 * Driver registers this routine as it io request handler. This 1188 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1189 * data structure to the rport indicated in @lpfc_nvme_rport. 1190 * 1191 * Return value : 1192 * 0 - Success 1193 * TODO: What are the failure codes. 1194 **/ 1195 static int 1196 lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, 1197 struct lpfc_io_buf *lpfc_ncmd, 1198 struct lpfc_nodelist *pnode, 1199 struct lpfc_fc4_ctrl_stat *cstat) 1200 { 1201 struct lpfc_hba *phba = vport->phba; 1202 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1203 struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq); 1204 union lpfc_wqe128 *wqe = &pwqeq->wqe; 1205 uint32_t req_len; 1206 1207 if (!NLP_CHK_NODE_ACT(pnode)) 1208 return -EINVAL; 1209 1210 /* 1211 * There are three possibilities here - use scatter-gather segment, use 1212 * the single mapping, or neither. 1213 */ 1214 if (nCmd->sg_cnt) { 1215 if (nCmd->io_dir == NVMEFC_FCP_WRITE) { 1216 /* From the iwrite template, initialize words 7 - 11 */ 1217 memcpy(&wqe->words[7], 1218 &lpfc_iwrite_cmd_template.words[7], 1219 sizeof(uint32_t) * 5); 1220 1221 /* Word 4 */ 1222 wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length; 1223 1224 /* Word 5 */ 1225 if ((phba->cfg_nvme_enable_fb) && 1226 (pnode->nlp_flag & NLP_FIRSTBURST)) { 1227 req_len = lpfc_ncmd->nvmeCmd->payload_length; 1228 if (req_len < pnode->nvme_fb_size) 1229 wqe->fcp_iwrite.initial_xfer_len = 1230 req_len; 1231 else 1232 wqe->fcp_iwrite.initial_xfer_len = 1233 pnode->nvme_fb_size; 1234 } else { 1235 wqe->fcp_iwrite.initial_xfer_len = 0; 1236 } 1237 cstat->output_requests++; 1238 } else { 1239 /* From the iread template, initialize words 7 - 11 */ 1240 memcpy(&wqe->words[7], 1241 &lpfc_iread_cmd_template.words[7], 1242 sizeof(uint32_t) * 5); 1243 1244 /* Word 4 */ 1245 wqe->fcp_iread.total_xfer_len = nCmd->payload_length; 1246 1247 /* Word 5 */ 1248 wqe->fcp_iread.rsrvd5 = 0; 1249 1250 cstat->input_requests++; 1251 } 1252 } else { 1253 /* From the icmnd template, initialize words 4 - 11 */ 1254 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 1255 sizeof(uint32_t) * 8); 1256 cstat->control_requests++; 1257 } 1258 1259 if (pnode->nlp_nvme_info & NLP_NVME_NSLER) 1260 bf_set(wqe_erp, &wqe->generic.wqe_com, 1); 1261 /* 1262 * Finish initializing those WQE fields that are independent 1263 * of the nvme_cmnd request_buffer 1264 */ 1265 1266 /* Word 3 */ 1267 bf_set(payload_offset_len, &wqe->fcp_icmd, 1268 (nCmd->rsplen + nCmd->cmdlen)); 1269 1270 /* Word 6 */ 1271 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 1272 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 1273 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 1274 1275 /* Word 8 */ 1276 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 1277 1278 /* Word 9 */ 1279 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 1280 1281 /* Words 13 14 15 are for PBDE support */ 1282 1283 pwqeq->vport = vport; 1284 return 0; 1285 } 1286 1287 1288 /** 1289 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO 1290 * @lpfc_pnvme: Pointer to the driver's nvme instance data 1291 * @lpfc_nvme_lport: Pointer to the driver's local port data 1292 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1293 * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 1294 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1295 * 1296 * Driver registers this routine as it io request handler. This 1297 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1298 * data structure to the rport indicated in @lpfc_nvme_rport. 1299 * 1300 * Return value : 1301 * 0 - Success 1302 * TODO: What are the failure codes. 1303 **/ 1304 static int 1305 lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, 1306 struct lpfc_io_buf *lpfc_ncmd) 1307 { 1308 struct lpfc_hba *phba = vport->phba; 1309 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1310 union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe; 1311 struct sli4_sge *sgl = lpfc_ncmd->dma_sgl; 1312 struct sli4_hybrid_sgl *sgl_xtra = NULL; 1313 struct scatterlist *data_sg; 1314 struct sli4_sge *first_data_sgl; 1315 struct ulp_bde64 *bde; 1316 dma_addr_t physaddr = 0; 1317 uint32_t num_bde = 0; 1318 uint32_t dma_len = 0; 1319 uint32_t dma_offset = 0; 1320 int nseg, i, j; 1321 bool lsp_just_set = false; 1322 1323 /* Fix up the command and response DMA stuff. */ 1324 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); 1325 1326 /* 1327 * There are three possibilities here - use scatter-gather segment, use 1328 * the single mapping, or neither. 1329 */ 1330 if (nCmd->sg_cnt) { 1331 /* 1332 * Jump over the cmd and rsp SGEs. The fix routine 1333 * has already adjusted for this. 1334 */ 1335 sgl += 2; 1336 1337 first_data_sgl = sgl; 1338 lpfc_ncmd->seg_cnt = nCmd->sg_cnt; 1339 if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) { 1340 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1341 "6058 Too many sg segments from " 1342 "NVME Transport. Max %d, " 1343 "nvmeIO sg_cnt %d\n", 1344 phba->cfg_nvme_seg_cnt + 1, 1345 lpfc_ncmd->seg_cnt); 1346 lpfc_ncmd->seg_cnt = 0; 1347 return 1; 1348 } 1349 1350 /* 1351 * The driver established a maximum scatter-gather segment count 1352 * during probe that limits the number of sg elements in any 1353 * single nvme command. Just run through the seg_cnt and format 1354 * the sge's. 1355 */ 1356 nseg = nCmd->sg_cnt; 1357 data_sg = nCmd->first_sgl; 1358 1359 /* for tracking the segment boundaries */ 1360 j = 2; 1361 for (i = 0; i < nseg; i++) { 1362 if (data_sg == NULL) { 1363 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1364 "6059 dptr err %d, nseg %d\n", 1365 i, nseg); 1366 lpfc_ncmd->seg_cnt = 0; 1367 return 1; 1368 } 1369 1370 sgl->word2 = 0; 1371 if ((num_bde + 1) == nseg) { 1372 bf_set(lpfc_sli4_sge_last, sgl, 1); 1373 bf_set(lpfc_sli4_sge_type, sgl, 1374 LPFC_SGE_TYPE_DATA); 1375 } else { 1376 bf_set(lpfc_sli4_sge_last, sgl, 0); 1377 1378 /* expand the segment */ 1379 if (!lsp_just_set && 1380 !((j + 1) % phba->border_sge_num) && 1381 ((nseg - 1) != i)) { 1382 /* set LSP type */ 1383 bf_set(lpfc_sli4_sge_type, sgl, 1384 LPFC_SGE_TYPE_LSP); 1385 1386 sgl_xtra = lpfc_get_sgl_per_hdwq( 1387 phba, lpfc_ncmd); 1388 1389 if (unlikely(!sgl_xtra)) { 1390 lpfc_ncmd->seg_cnt = 0; 1391 return 1; 1392 } 1393 sgl->addr_lo = cpu_to_le32(putPaddrLow( 1394 sgl_xtra->dma_phys_sgl)); 1395 sgl->addr_hi = cpu_to_le32(putPaddrHigh( 1396 sgl_xtra->dma_phys_sgl)); 1397 1398 } else { 1399 bf_set(lpfc_sli4_sge_type, sgl, 1400 LPFC_SGE_TYPE_DATA); 1401 } 1402 } 1403 1404 if (!(bf_get(lpfc_sli4_sge_type, sgl) & 1405 LPFC_SGE_TYPE_LSP)) { 1406 if ((nseg - 1) == i) 1407 bf_set(lpfc_sli4_sge_last, sgl, 1); 1408 1409 physaddr = data_sg->dma_address; 1410 dma_len = data_sg->length; 1411 sgl->addr_lo = cpu_to_le32( 1412 putPaddrLow(physaddr)); 1413 sgl->addr_hi = cpu_to_le32( 1414 putPaddrHigh(physaddr)); 1415 1416 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 1417 sgl->word2 = cpu_to_le32(sgl->word2); 1418 sgl->sge_len = cpu_to_le32(dma_len); 1419 1420 dma_offset += dma_len; 1421 data_sg = sg_next(data_sg); 1422 1423 sgl++; 1424 1425 lsp_just_set = false; 1426 } else { 1427 sgl->word2 = cpu_to_le32(sgl->word2); 1428 1429 sgl->sge_len = cpu_to_le32( 1430 phba->cfg_sg_dma_buf_size); 1431 1432 sgl = (struct sli4_sge *)sgl_xtra->dma_sgl; 1433 i = i - 1; 1434 1435 lsp_just_set = true; 1436 } 1437 1438 j++; 1439 } 1440 if (phba->cfg_enable_pbde) { 1441 /* Use PBDE support for first SGL only, offset == 0 */ 1442 /* Words 13-15 */ 1443 bde = (struct ulp_bde64 *) 1444 &wqe->words[13]; 1445 bde->addrLow = first_data_sgl->addr_lo; 1446 bde->addrHigh = first_data_sgl->addr_hi; 1447 bde->tus.f.bdeSize = 1448 le32_to_cpu(first_data_sgl->sge_len); 1449 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1450 bde->tus.w = cpu_to_le32(bde->tus.w); 1451 /* wqe_pbde is 1 in template */ 1452 } else { 1453 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 1454 bf_set(wqe_pbde, &wqe->generic.wqe_com, 0); 1455 } 1456 1457 } else { 1458 lpfc_ncmd->seg_cnt = 0; 1459 1460 /* For this clause to be valid, the payload_length 1461 * and sg_cnt must zero. 1462 */ 1463 if (nCmd->payload_length != 0) { 1464 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1465 "6063 NVME DMA Prep Err: sg_cnt %d " 1466 "payload_length x%x\n", 1467 nCmd->sg_cnt, nCmd->payload_length); 1468 return 1; 1469 } 1470 } 1471 return 0; 1472 } 1473 1474 /** 1475 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO 1476 * @lpfc_pnvme: Pointer to the driver's nvme instance data 1477 * @lpfc_nvme_lport: Pointer to the driver's local port data 1478 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1479 * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 1480 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1481 * 1482 * Driver registers this routine as it io request handler. This 1483 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1484 * data structure to the rport 1485 indicated in @lpfc_nvme_rport. 1486 * 1487 * Return value : 1488 * 0 - Success 1489 * TODO: What are the failure codes. 1490 **/ 1491 static int 1492 lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, 1493 struct nvme_fc_remote_port *pnvme_rport, 1494 void *hw_queue_handle, 1495 struct nvmefc_fcp_req *pnvme_fcreq) 1496 { 1497 int ret = 0; 1498 int expedite = 0; 1499 int idx, cpu; 1500 struct lpfc_nvme_lport *lport; 1501 struct lpfc_fc4_ctrl_stat *cstat; 1502 struct lpfc_vport *vport; 1503 struct lpfc_hba *phba; 1504 struct lpfc_nodelist *ndlp; 1505 struct lpfc_io_buf *lpfc_ncmd; 1506 struct lpfc_nvme_rport *rport; 1507 struct lpfc_nvme_qhandle *lpfc_queue_info; 1508 struct lpfc_nvme_fcpreq_priv *freqpriv; 1509 struct nvme_common_command *sqe; 1510 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1511 uint64_t start = 0; 1512 #endif 1513 1514 /* Validate pointers. LLDD fault handling with transport does 1515 * have timing races. 1516 */ 1517 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1518 if (unlikely(!lport)) { 1519 ret = -EINVAL; 1520 goto out_fail; 1521 } 1522 1523 vport = lport->vport; 1524 1525 if (unlikely(!hw_queue_handle)) { 1526 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1527 "6117 Fail IO, NULL hw_queue_handle\n"); 1528 atomic_inc(&lport->xmt_fcp_err); 1529 ret = -EBUSY; 1530 goto out_fail; 1531 } 1532 1533 phba = vport->phba; 1534 1535 if (vport->load_flag & FC_UNLOADING) { 1536 ret = -ENODEV; 1537 goto out_fail; 1538 } 1539 1540 if (unlikely(vport->load_flag & FC_UNLOADING)) { 1541 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1542 "6124 Fail IO, Driver unload\n"); 1543 atomic_inc(&lport->xmt_fcp_err); 1544 ret = -ENODEV; 1545 goto out_fail; 1546 } 1547 1548 freqpriv = pnvme_fcreq->private; 1549 if (unlikely(!freqpriv)) { 1550 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1551 "6158 Fail IO, NULL request data\n"); 1552 atomic_inc(&lport->xmt_fcp_err); 1553 ret = -EINVAL; 1554 goto out_fail; 1555 } 1556 1557 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1558 if (phba->ktime_on) 1559 start = ktime_get_ns(); 1560 #endif 1561 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 1562 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; 1563 1564 /* 1565 * Catch race where our node has transitioned, but the 1566 * transport is still transitioning. 1567 */ 1568 ndlp = rport->ndlp; 1569 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 1570 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1571 "6053 Busy IO, ndlp not ready: rport x%px " 1572 "ndlp x%px, DID x%06x\n", 1573 rport, ndlp, pnvme_rport->port_id); 1574 atomic_inc(&lport->xmt_fcp_err); 1575 ret = -EBUSY; 1576 goto out_fail; 1577 } 1578 1579 /* The remote node has to be a mapped target or it's an error. */ 1580 if ((ndlp->nlp_type & NLP_NVME_TARGET) && 1581 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 1582 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1583 "6036 Fail IO, DID x%06x not ready for " 1584 "IO. State x%x, Type x%x Flg x%x\n", 1585 pnvme_rport->port_id, 1586 ndlp->nlp_state, ndlp->nlp_type, 1587 ndlp->upcall_flags); 1588 atomic_inc(&lport->xmt_fcp_bad_ndlp); 1589 ret = -EBUSY; 1590 goto out_fail; 1591 1592 } 1593 1594 /* Currently only NVME Keep alive commands should be expedited 1595 * if the driver runs out of a resource. These should only be 1596 * issued on the admin queue, qidx 0 1597 */ 1598 if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) { 1599 sqe = &((struct nvme_fc_cmd_iu *) 1600 pnvme_fcreq->cmdaddr)->sqe.common; 1601 if (sqe->opcode == nvme_admin_keep_alive) 1602 expedite = 1; 1603 } 1604 1605 /* The node is shared with FCP IO, make sure the IO pending count does 1606 * not exceed the programmed depth. 1607 */ 1608 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 1609 if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) && 1610 !expedite) { 1611 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1612 "6174 Fail IO, ndlp qdepth exceeded: " 1613 "idx %d DID %x pend %d qdepth %d\n", 1614 lpfc_queue_info->index, ndlp->nlp_DID, 1615 atomic_read(&ndlp->cmd_pending), 1616 ndlp->cmd_qdepth); 1617 atomic_inc(&lport->xmt_fcp_qdepth); 1618 ret = -EBUSY; 1619 goto out_fail; 1620 } 1621 } 1622 1623 /* Lookup Hardware Queue index based on fcp_io_sched module parameter */ 1624 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) { 1625 idx = lpfc_queue_info->index; 1626 } else { 1627 cpu = raw_smp_processor_id(); 1628 idx = phba->sli4_hba.cpu_map[cpu].hdwq; 1629 } 1630 1631 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, idx, expedite); 1632 if (lpfc_ncmd == NULL) { 1633 atomic_inc(&lport->xmt_fcp_noxri); 1634 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1635 "6065 Fail IO, driver buffer pool is empty: " 1636 "idx %d DID %x\n", 1637 lpfc_queue_info->index, ndlp->nlp_DID); 1638 ret = -EBUSY; 1639 goto out_fail; 1640 } 1641 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1642 if (start) { 1643 lpfc_ncmd->ts_cmd_start = start; 1644 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; 1645 } else { 1646 lpfc_ncmd->ts_cmd_start = 0; 1647 } 1648 #endif 1649 1650 /* 1651 * Store the data needed by the driver to issue, abort, and complete 1652 * an IO. 1653 * Do not let the IO hang out forever. There is no midlayer issuing 1654 * an abort so inform the FW of the maximum IO pending time. 1655 */ 1656 freqpriv->nvme_buf = lpfc_ncmd; 1657 lpfc_ncmd->nvmeCmd = pnvme_fcreq; 1658 lpfc_ncmd->ndlp = ndlp; 1659 lpfc_ncmd->qidx = lpfc_queue_info->qidx; 1660 1661 /* 1662 * Issue the IO on the WQ indicated by index in the hw_queue_handle. 1663 * This identfier was create in our hardware queue create callback 1664 * routine. The driver now is dependent on the IO queue steering from 1665 * the transport. We are trusting the upper NVME layers know which 1666 * index to use and that they have affinitized a CPU to this hardware 1667 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. 1668 */ 1669 lpfc_ncmd->cur_iocbq.hba_wqidx = idx; 1670 cstat = &phba->sli4_hba.hdwq[idx].nvme_cstat; 1671 1672 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat); 1673 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); 1674 if (ret) { 1675 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1676 "6175 Fail IO, Prep DMA: " 1677 "idx %d DID %x\n", 1678 lpfc_queue_info->index, ndlp->nlp_DID); 1679 atomic_inc(&lport->xmt_fcp_err); 1680 ret = -ENOMEM; 1681 goto out_free_nvme_buf; 1682 } 1683 1684 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n", 1685 lpfc_ncmd->cur_iocbq.sli4_xritag, 1686 lpfc_queue_info->index, ndlp->nlp_DID); 1687 1688 ret = lpfc_sli4_issue_wqe(phba, lpfc_ncmd->hdwq, &lpfc_ncmd->cur_iocbq); 1689 if (ret) { 1690 atomic_inc(&lport->xmt_fcp_wqerr); 1691 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1692 "6113 Fail IO, Could not issue WQE err %x " 1693 "sid: x%x did: x%x oxid: x%x\n", 1694 ret, vport->fc_myDID, ndlp->nlp_DID, 1695 lpfc_ncmd->cur_iocbq.sli4_xritag); 1696 goto out_free_nvme_buf; 1697 } 1698 1699 if (phba->cfg_xri_rebalancing) 1700 lpfc_keep_pvt_pool_above_lowwm(phba, lpfc_ncmd->hdwq_no); 1701 1702 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1703 if (lpfc_ncmd->ts_cmd_start) 1704 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); 1705 1706 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) { 1707 cpu = raw_smp_processor_id(); 1708 if (cpu < LPFC_CHECK_CPU_CNT) { 1709 lpfc_ncmd->cpu = cpu; 1710 if (idx != cpu) 1711 lpfc_printf_vlog(vport, 1712 KERN_INFO, LOG_NVME_IOERR, 1713 "6702 CPU Check cmd: " 1714 "cpu %d wq %d\n", 1715 lpfc_ncmd->cpu, 1716 lpfc_queue_info->index); 1717 phba->sli4_hba.hdwq[idx].cpucheck_xmt_io[cpu]++; 1718 } 1719 } 1720 #endif 1721 return 0; 1722 1723 out_free_nvme_buf: 1724 if (lpfc_ncmd->nvmeCmd->sg_cnt) { 1725 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE) 1726 cstat->output_requests--; 1727 else 1728 cstat->input_requests--; 1729 } else 1730 cstat->control_requests--; 1731 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1732 out_fail: 1733 return ret; 1734 } 1735 1736 /** 1737 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. 1738 * @phba: Pointer to HBA context object 1739 * @cmdiocb: Pointer to command iocb object. 1740 * @rspiocb: Pointer to response iocb object. 1741 * 1742 * This is the callback function for any NVME FCP IO that was aborted. 1743 * 1744 * Return value: 1745 * None 1746 **/ 1747 void 1748 lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1749 struct lpfc_wcqe_complete *abts_cmpl) 1750 { 1751 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1752 "6145 ABORT_XRI_CN completing on rpi x%x " 1753 "original iotag x%x, abort cmd iotag x%x " 1754 "req_tag x%x, status x%x, hwstatus x%x\n", 1755 cmdiocb->iocb.un.acxri.abortContextTag, 1756 cmdiocb->iocb.un.acxri.abortIoTag, 1757 cmdiocb->iotag, 1758 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), 1759 bf_get(lpfc_wcqe_c_status, abts_cmpl), 1760 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); 1761 lpfc_sli_release_iocbq(phba, cmdiocb); 1762 } 1763 1764 /** 1765 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS 1766 * @lpfc_pnvme: Pointer to the driver's nvme instance data 1767 * @lpfc_nvme_lport: Pointer to the driver's local port data 1768 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1769 * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 1770 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1771 * 1772 * Driver registers this routine as its nvme request io abort handler. This 1773 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq 1774 * data structure to the rport indicated in @lpfc_nvme_rport. This routine 1775 * is executed asynchronously - one the target is validated as "MAPPED" and 1776 * ready for IO, the driver issues the abort request and returns. 1777 * 1778 * Return value: 1779 * None 1780 **/ 1781 static void 1782 lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, 1783 struct nvme_fc_remote_port *pnvme_rport, 1784 void *hw_queue_handle, 1785 struct nvmefc_fcp_req *pnvme_fcreq) 1786 { 1787 struct lpfc_nvme_lport *lport; 1788 struct lpfc_vport *vport; 1789 struct lpfc_hba *phba; 1790 struct lpfc_io_buf *lpfc_nbuf; 1791 struct lpfc_iocbq *abts_buf; 1792 struct lpfc_iocbq *nvmereq_wqe; 1793 struct lpfc_nvme_fcpreq_priv *freqpriv; 1794 union lpfc_wqe128 *abts_wqe; 1795 unsigned long flags; 1796 int ret_val; 1797 1798 /* Validate pointers. LLDD fault handling with transport does 1799 * have timing races. 1800 */ 1801 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1802 if (unlikely(!lport)) 1803 return; 1804 1805 vport = lport->vport; 1806 1807 if (unlikely(!hw_queue_handle)) { 1808 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1809 "6129 Fail Abort, HW Queue Handle NULL.\n"); 1810 return; 1811 } 1812 1813 phba = vport->phba; 1814 freqpriv = pnvme_fcreq->private; 1815 1816 if (unlikely(!freqpriv)) 1817 return; 1818 if (vport->load_flag & FC_UNLOADING) 1819 return; 1820 1821 /* Announce entry to new IO submit field. */ 1822 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1823 "6002 Abort Request to rport DID x%06x " 1824 "for nvme_fc_req x%px\n", 1825 pnvme_rport->port_id, 1826 pnvme_fcreq); 1827 1828 /* If the hba is getting reset, this flag is set. It is 1829 * cleared when the reset is complete and rings reestablished. 1830 */ 1831 spin_lock_irqsave(&phba->hbalock, flags); 1832 /* driver queued commands are in process of being flushed */ 1833 if (phba->hba_flag & HBA_IOQ_FLUSH) { 1834 spin_unlock_irqrestore(&phba->hbalock, flags); 1835 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1836 "6139 Driver in reset cleanup - flushing " 1837 "NVME Req now. hba_flag x%x\n", 1838 phba->hba_flag); 1839 return; 1840 } 1841 1842 lpfc_nbuf = freqpriv->nvme_buf; 1843 if (!lpfc_nbuf) { 1844 spin_unlock_irqrestore(&phba->hbalock, flags); 1845 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1846 "6140 NVME IO req has no matching lpfc nvme " 1847 "io buffer. Skipping abort req.\n"); 1848 return; 1849 } else if (!lpfc_nbuf->nvmeCmd) { 1850 spin_unlock_irqrestore(&phba->hbalock, flags); 1851 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1852 "6141 lpfc NVME IO req has no nvme_fcreq " 1853 "io buffer. Skipping abort req.\n"); 1854 return; 1855 } 1856 nvmereq_wqe = &lpfc_nbuf->cur_iocbq; 1857 1858 /* Guard against IO completion being called at same time */ 1859 spin_lock(&lpfc_nbuf->buf_lock); 1860 1861 /* 1862 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's 1863 * state must match the nvme_fcreq passed by the nvme 1864 * transport. If they don't match, it is likely the driver 1865 * has already completed the NVME IO and the nvme transport 1866 * has not seen it yet. 1867 */ 1868 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { 1869 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1870 "6143 NVME req mismatch: " 1871 "lpfc_nbuf x%px nvmeCmd x%px, " 1872 "pnvme_fcreq x%px. Skipping Abort xri x%x\n", 1873 lpfc_nbuf, lpfc_nbuf->nvmeCmd, 1874 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1875 goto out_unlock; 1876 } 1877 1878 /* Don't abort IOs no longer on the pending queue. */ 1879 if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { 1880 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1881 "6142 NVME IO req x%px not queued - skipping " 1882 "abort req xri x%x\n", 1883 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1884 goto out_unlock; 1885 } 1886 1887 atomic_inc(&lport->xmt_fcp_abort); 1888 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n", 1889 nvmereq_wqe->sli4_xritag, 1890 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id); 1891 1892 /* Outstanding abort is in progress */ 1893 if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) { 1894 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1895 "6144 Outstanding NVME I/O Abort Request " 1896 "still pending on nvme_fcreq x%px, " 1897 "lpfc_ncmd %px xri x%x\n", 1898 pnvme_fcreq, lpfc_nbuf, 1899 nvmereq_wqe->sli4_xritag); 1900 goto out_unlock; 1901 } 1902 1903 abts_buf = __lpfc_sli_get_iocbq(phba); 1904 if (!abts_buf) { 1905 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1906 "6136 No available abort wqes. Skipping " 1907 "Abts req for nvme_fcreq x%px xri x%x\n", 1908 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1909 goto out_unlock; 1910 } 1911 1912 /* Ready - mark outstanding as aborted by driver. */ 1913 nvmereq_wqe->iocb_flag |= LPFC_DRIVER_ABORTED; 1914 1915 /* Complete prepping the abort wqe and issue to the FW. */ 1916 abts_wqe = &abts_buf->wqe; 1917 1918 /* WQEs are reused. Clear stale data and set key fields to 1919 * zero like ia, iaab, iaar, xri_tag, and ctxt_tag. 1920 */ 1921 memset(abts_wqe, 0, sizeof(*abts_wqe)); 1922 bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG); 1923 1924 /* word 7 */ 1925 bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX); 1926 bf_set(wqe_class, &abts_wqe->abort_cmd.wqe_com, 1927 nvmereq_wqe->iocb.ulpClass); 1928 1929 /* word 8 - tell the FW to abort the IO associated with this 1930 * outstanding exchange ID. 1931 */ 1932 abts_wqe->abort_cmd.wqe_com.abort_tag = nvmereq_wqe->sli4_xritag; 1933 1934 /* word 9 - this is the iotag for the abts_wqe completion. */ 1935 bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com, 1936 abts_buf->iotag); 1937 1938 /* word 10 */ 1939 bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1); 1940 bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE); 1941 1942 /* word 11 */ 1943 bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND); 1944 bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1); 1945 bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 1946 1947 /* ABTS WQE must go to the same WQ as the WQE to be aborted */ 1948 abts_buf->iocb_flag |= LPFC_IO_NVME; 1949 abts_buf->hba_wqidx = nvmereq_wqe->hba_wqidx; 1950 abts_buf->vport = vport; 1951 abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl; 1952 ret_val = lpfc_sli4_issue_wqe(phba, lpfc_nbuf->hdwq, abts_buf); 1953 spin_unlock(&lpfc_nbuf->buf_lock); 1954 spin_unlock_irqrestore(&phba->hbalock, flags); 1955 if (ret_val) { 1956 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1957 "6137 Failed abts issue_wqe with status x%x " 1958 "for nvme_fcreq x%px.\n", 1959 ret_val, pnvme_fcreq); 1960 lpfc_sli_release_iocbq(phba, abts_buf); 1961 return; 1962 } 1963 1964 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1965 "6138 Transport Abort NVME Request Issued for " 1966 "ox_id x%x on reqtag x%x\n", 1967 nvmereq_wqe->sli4_xritag, 1968 abts_buf->iotag); 1969 return; 1970 1971 out_unlock: 1972 spin_unlock(&lpfc_nbuf->buf_lock); 1973 spin_unlock_irqrestore(&phba->hbalock, flags); 1974 return; 1975 } 1976 1977 /* Declare and initialization an instance of the FC NVME template. */ 1978 static struct nvme_fc_port_template lpfc_nvme_template = { 1979 /* initiator-based functions */ 1980 .localport_delete = lpfc_nvme_localport_delete, 1981 .remoteport_delete = lpfc_nvme_remoteport_delete, 1982 .create_queue = lpfc_nvme_create_queue, 1983 .delete_queue = lpfc_nvme_delete_queue, 1984 .ls_req = lpfc_nvme_ls_req, 1985 .fcp_io = lpfc_nvme_fcp_io_submit, 1986 .ls_abort = lpfc_nvme_ls_abort, 1987 .fcp_abort = lpfc_nvme_fcp_abort, 1988 1989 .max_hw_queues = 1, 1990 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 1991 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 1992 .dma_boundary = 0xFFFFFFFF, 1993 1994 /* Sizes of additional private data for data structures. 1995 * No use for the last two sizes at this time. 1996 */ 1997 .local_priv_sz = sizeof(struct lpfc_nvme_lport), 1998 .remote_priv_sz = sizeof(struct lpfc_nvme_rport), 1999 .lsrqst_priv_sz = 0, 2000 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv), 2001 }; 2002 2003 /** 2004 * lpfc_get_nvme_buf - Get a nvme buffer from io_buf_list of the HBA 2005 * @phba: The HBA for which this call is being executed. 2006 * 2007 * This routine removes a nvme buffer from head of @hdwq io_buf_list 2008 * and returns to caller. 2009 * 2010 * Return codes: 2011 * NULL - Error 2012 * Pointer to lpfc_nvme_buf - Success 2013 **/ 2014 static struct lpfc_io_buf * 2015 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 2016 int idx, int expedite) 2017 { 2018 struct lpfc_io_buf *lpfc_ncmd; 2019 struct lpfc_sli4_hdw_queue *qp; 2020 struct sli4_sge *sgl; 2021 struct lpfc_iocbq *pwqeq; 2022 union lpfc_wqe128 *wqe; 2023 2024 lpfc_ncmd = lpfc_get_io_buf(phba, NULL, idx, expedite); 2025 2026 if (lpfc_ncmd) { 2027 pwqeq = &(lpfc_ncmd->cur_iocbq); 2028 wqe = &pwqeq->wqe; 2029 2030 /* Setup key fields in buffer that may have been changed 2031 * if other protocols used this buffer. 2032 */ 2033 pwqeq->iocb_flag = LPFC_IO_NVME; 2034 pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl; 2035 lpfc_ncmd->start_time = jiffies; 2036 lpfc_ncmd->flags = 0; 2037 2038 /* Rsp SGE will be filled in when we rcv an IO 2039 * from the NVME Layer to be sent. 2040 * The cmd is going to be embedded so we need a SKIP SGE. 2041 */ 2042 sgl = lpfc_ncmd->dma_sgl; 2043 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2044 bf_set(lpfc_sli4_sge_last, sgl, 0); 2045 sgl->word2 = cpu_to_le32(sgl->word2); 2046 /* Fill in word 3 / sgl_len during cmd submission */ 2047 2048 /* Initialize 64 bytes only */ 2049 memset(wqe, 0, sizeof(union lpfc_wqe)); 2050 2051 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 2052 atomic_inc(&ndlp->cmd_pending); 2053 lpfc_ncmd->flags |= LPFC_SBUF_BUMP_QDEPTH; 2054 } 2055 2056 } else { 2057 qp = &phba->sli4_hba.hdwq[idx]; 2058 qp->empty_io_bufs++; 2059 } 2060 2061 return lpfc_ncmd; 2062 } 2063 2064 /** 2065 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. 2066 * @phba: The Hba for which this call is being executed. 2067 * @lpfc_ncmd: The nvme buffer which is being released. 2068 * 2069 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba 2070 * lpfc_io_buf_list list. For SLI4 XRI's are tied to the nvme buffer 2071 * and cannot be reused for at least RA_TOV amount of time if it was 2072 * aborted. 2073 **/ 2074 static void 2075 lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_io_buf *lpfc_ncmd) 2076 { 2077 struct lpfc_sli4_hdw_queue *qp; 2078 unsigned long iflag = 0; 2079 2080 if ((lpfc_ncmd->flags & LPFC_SBUF_BUMP_QDEPTH) && lpfc_ncmd->ndlp) 2081 atomic_dec(&lpfc_ncmd->ndlp->cmd_pending); 2082 2083 lpfc_ncmd->ndlp = NULL; 2084 lpfc_ncmd->flags &= ~LPFC_SBUF_BUMP_QDEPTH; 2085 2086 qp = lpfc_ncmd->hdwq; 2087 if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) { 2088 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2089 "6310 XB release deferred for " 2090 "ox_id x%x on reqtag x%x\n", 2091 lpfc_ncmd->cur_iocbq.sli4_xritag, 2092 lpfc_ncmd->cur_iocbq.iotag); 2093 2094 spin_lock_irqsave(&qp->abts_io_buf_list_lock, iflag); 2095 list_add_tail(&lpfc_ncmd->list, 2096 &qp->lpfc_abts_io_buf_list); 2097 qp->abts_nvme_io_bufs++; 2098 spin_unlock_irqrestore(&qp->abts_io_buf_list_lock, iflag); 2099 } else 2100 lpfc_release_io_buf(phba, (struct lpfc_io_buf *)lpfc_ncmd, qp); 2101 } 2102 2103 /** 2104 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. 2105 * @pvport - the lpfc_vport instance requesting a localport. 2106 * 2107 * This routine is invoked to create an nvme localport instance to bind 2108 * to the nvme_fc_transport. It is called once during driver load 2109 * like lpfc_create_shost after all other services are initialized. 2110 * It requires a vport, vpi, and wwns at call time. Other localport 2111 * parameters are modified as the driver's FCID and the Fabric WWN 2112 * are established. 2113 * 2114 * Return codes 2115 * 0 - successful 2116 * -ENOMEM - no heap memory available 2117 * other values - from nvme registration upcall 2118 **/ 2119 int 2120 lpfc_nvme_create_localport(struct lpfc_vport *vport) 2121 { 2122 int ret = 0; 2123 struct lpfc_hba *phba = vport->phba; 2124 struct nvme_fc_port_info nfcp_info; 2125 struct nvme_fc_local_port *localport; 2126 struct lpfc_nvme_lport *lport; 2127 2128 /* Initialize this localport instance. The vport wwn usage ensures 2129 * that NPIV is accounted for. 2130 */ 2131 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); 2132 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; 2133 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 2134 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 2135 2136 /* We need to tell the transport layer + 1 because it takes page 2137 * alignment into account. When space for the SGL is allocated we 2138 * allocate + 3, one for cmd, one for rsp and one for this alignment 2139 */ 2140 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 2141 2142 /* Advertise how many hw queues we support based on fcp_io_sched */ 2143 if (phba->cfg_fcp_io_sched == LPFC_FCP_SCHED_BY_HDWQ) 2144 lpfc_nvme_template.max_hw_queues = phba->cfg_hdw_queue; 2145 else 2146 lpfc_nvme_template.max_hw_queues = 2147 phba->sli4_hba.num_present_cpu; 2148 2149 if (!IS_ENABLED(CONFIG_NVME_FC)) 2150 return ret; 2151 2152 /* localport is allocated from the stack, but the registration 2153 * call allocates heap memory as well as the private area. 2154 */ 2155 2156 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, 2157 &vport->phba->pcidev->dev, &localport); 2158 if (!ret) { 2159 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, 2160 "6005 Successfully registered local " 2161 "NVME port num %d, localP x%px, private " 2162 "x%px, sg_seg %d\n", 2163 localport->port_num, localport, 2164 localport->private, 2165 lpfc_nvme_template.max_sgl_segments); 2166 2167 /* Private is our lport size declared in the template. */ 2168 lport = (struct lpfc_nvme_lport *)localport->private; 2169 vport->localport = localport; 2170 lport->vport = vport; 2171 vport->nvmei_support = 1; 2172 2173 atomic_set(&lport->xmt_fcp_noxri, 0); 2174 atomic_set(&lport->xmt_fcp_bad_ndlp, 0); 2175 atomic_set(&lport->xmt_fcp_qdepth, 0); 2176 atomic_set(&lport->xmt_fcp_err, 0); 2177 atomic_set(&lport->xmt_fcp_wqerr, 0); 2178 atomic_set(&lport->xmt_fcp_abort, 0); 2179 atomic_set(&lport->xmt_ls_abort, 0); 2180 atomic_set(&lport->xmt_ls_err, 0); 2181 atomic_set(&lport->cmpl_fcp_xb, 0); 2182 atomic_set(&lport->cmpl_fcp_err, 0); 2183 atomic_set(&lport->cmpl_ls_xb, 0); 2184 atomic_set(&lport->cmpl_ls_err, 0); 2185 atomic_set(&lport->fc4NvmeLsRequests, 0); 2186 atomic_set(&lport->fc4NvmeLsCmpls, 0); 2187 } 2188 2189 return ret; 2190 } 2191 2192 #if (IS_ENABLED(CONFIG_NVME_FC)) 2193 /* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg. 2194 * 2195 * The driver has to wait for the host nvme transport to callback 2196 * indicating the localport has successfully unregistered all 2197 * resources. Since this is an uninterruptible wait, loop every ten 2198 * seconds and print a message indicating no progress. 2199 * 2200 * An uninterruptible wait is used because of the risk of transport-to- 2201 * driver state mismatch. 2202 */ 2203 static void 2204 lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport, 2205 struct lpfc_nvme_lport *lport, 2206 struct completion *lport_unreg_cmp) 2207 { 2208 u32 wait_tmo; 2209 int ret, i, pending = 0; 2210 struct lpfc_sli_ring *pring; 2211 struct lpfc_hba *phba = vport->phba; 2212 2213 /* Host transport has to clean up and confirm requiring an indefinite 2214 * wait. Print a message if a 10 second wait expires and renew the 2215 * wait. This is unexpected. 2216 */ 2217 wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); 2218 while (true) { 2219 ret = wait_for_completion_timeout(lport_unreg_cmp, wait_tmo); 2220 if (unlikely(!ret)) { 2221 pending = 0; 2222 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2223 pring = phba->sli4_hba.hdwq[i].io_wq->pring; 2224 if (!pring) 2225 continue; 2226 if (pring->txcmplq_cnt) 2227 pending += pring->txcmplq_cnt; 2228 } 2229 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 2230 "6176 Lport x%px Localport x%px wait " 2231 "timed out. Pending %d. Renewing.\n", 2232 lport, vport->localport, pending); 2233 continue; 2234 } 2235 break; 2236 } 2237 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 2238 "6177 Lport x%px Localport x%px Complete Success\n", 2239 lport, vport->localport); 2240 } 2241 #endif 2242 2243 /** 2244 * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport. 2245 * @pnvme: pointer to lpfc nvme data structure. 2246 * 2247 * This routine is invoked to destroy all lports bound to the phba. 2248 * The lport memory was allocated by the nvme fc transport and is 2249 * released there. This routine ensures all rports bound to the 2250 * lport have been disconnected. 2251 * 2252 **/ 2253 void 2254 lpfc_nvme_destroy_localport(struct lpfc_vport *vport) 2255 { 2256 #if (IS_ENABLED(CONFIG_NVME_FC)) 2257 struct nvme_fc_local_port *localport; 2258 struct lpfc_nvme_lport *lport; 2259 int ret; 2260 DECLARE_COMPLETION_ONSTACK(lport_unreg_cmp); 2261 2262 if (vport->nvmei_support == 0) 2263 return; 2264 2265 localport = vport->localport; 2266 lport = (struct lpfc_nvme_lport *)localport->private; 2267 2268 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2269 "6011 Destroying NVME localport x%px\n", 2270 localport); 2271 2272 /* lport's rport list is clear. Unregister 2273 * lport and release resources. 2274 */ 2275 lport->lport_unreg_cmp = &lport_unreg_cmp; 2276 ret = nvme_fc_unregister_localport(localport); 2277 2278 /* Wait for completion. This either blocks 2279 * indefinitely or succeeds 2280 */ 2281 lpfc_nvme_lport_unreg_wait(vport, lport, &lport_unreg_cmp); 2282 vport->localport = NULL; 2283 2284 /* Regardless of the unregister upcall response, clear 2285 * nvmei_support. All rports are unregistered and the 2286 * driver will clean up. 2287 */ 2288 vport->nvmei_support = 0; 2289 if (ret == 0) { 2290 lpfc_printf_vlog(vport, 2291 KERN_INFO, LOG_NVME_DISC, 2292 "6009 Unregistered lport Success\n"); 2293 } else { 2294 lpfc_printf_vlog(vport, 2295 KERN_INFO, LOG_NVME_DISC, 2296 "6010 Unregistered lport " 2297 "Failed, status x%x\n", 2298 ret); 2299 } 2300 #endif 2301 } 2302 2303 void 2304 lpfc_nvme_update_localport(struct lpfc_vport *vport) 2305 { 2306 #if (IS_ENABLED(CONFIG_NVME_FC)) 2307 struct nvme_fc_local_port *localport; 2308 struct lpfc_nvme_lport *lport; 2309 2310 localport = vport->localport; 2311 if (!localport) { 2312 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2313 "6710 Update NVME fail. No localport\n"); 2314 return; 2315 } 2316 lport = (struct lpfc_nvme_lport *)localport->private; 2317 if (!lport) { 2318 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2319 "6171 Update NVME fail. localP x%px, No lport\n", 2320 localport); 2321 return; 2322 } 2323 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2324 "6012 Update NVME lport x%px did x%x\n", 2325 localport, vport->fc_myDID); 2326 2327 localport->port_id = vport->fc_myDID; 2328 if (localport->port_id == 0) 2329 localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY; 2330 else 2331 localport->port_role = FC_PORT_ROLE_NVME_INITIATOR; 2332 2333 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2334 "6030 bound lport x%px to DID x%06x\n", 2335 lport, localport->port_id); 2336 #endif 2337 } 2338 2339 int 2340 lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2341 { 2342 #if (IS_ENABLED(CONFIG_NVME_FC)) 2343 int ret = 0; 2344 struct nvme_fc_local_port *localport; 2345 struct lpfc_nvme_lport *lport; 2346 struct lpfc_nvme_rport *rport; 2347 struct lpfc_nvme_rport *oldrport; 2348 struct nvme_fc_remote_port *remote_port; 2349 struct nvme_fc_port_info rpinfo; 2350 struct lpfc_nodelist *prev_ndlp = NULL; 2351 2352 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, 2353 "6006 Register NVME PORT. DID x%06x nlptype x%x\n", 2354 ndlp->nlp_DID, ndlp->nlp_type); 2355 2356 localport = vport->localport; 2357 if (!localport) 2358 return 0; 2359 2360 lport = (struct lpfc_nvme_lport *)localport->private; 2361 2362 /* NVME rports are not preserved across devloss. 2363 * Just register this instance. Note, rpinfo->dev_loss_tmo 2364 * is left 0 to indicate accept transport defaults. The 2365 * driver communicates port role capabilities consistent 2366 * with the PRLI response data. 2367 */ 2368 memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info)); 2369 rpinfo.port_id = ndlp->nlp_DID; 2370 if (ndlp->nlp_type & NLP_NVME_TARGET) 2371 rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET; 2372 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 2373 rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR; 2374 2375 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 2376 rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY; 2377 2378 rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 2379 rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 2380 2381 spin_lock_irq(&vport->phba->hbalock); 2382 oldrport = lpfc_ndlp_get_nrport(ndlp); 2383 if (oldrport) { 2384 prev_ndlp = oldrport->ndlp; 2385 spin_unlock_irq(&vport->phba->hbalock); 2386 } else { 2387 spin_unlock_irq(&vport->phba->hbalock); 2388 lpfc_nlp_get(ndlp); 2389 } 2390 2391 ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port); 2392 if (!ret) { 2393 /* If the ndlp already has an nrport, this is just 2394 * a resume of the existing rport. Else this is a 2395 * new rport. 2396 */ 2397 /* Guard against an unregister/reregister 2398 * race that leaves the WAIT flag set. 2399 */ 2400 spin_lock_irq(&vport->phba->hbalock); 2401 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG; 2402 spin_unlock_irq(&vport->phba->hbalock); 2403 rport = remote_port->private; 2404 if (oldrport) { 2405 /* New remoteport record does not guarantee valid 2406 * host private memory area. 2407 */ 2408 if (oldrport == remote_port->private) { 2409 /* Same remoteport - ndlp should match. 2410 * Just reuse. 2411 */ 2412 lpfc_printf_vlog(ndlp->vport, KERN_INFO, 2413 LOG_NVME_DISC, 2414 "6014 Rebind lport to current " 2415 "remoteport x%px wwpn 0x%llx, " 2416 "Data: x%x x%x x%px x%px x%x " 2417 " x%06x\n", 2418 remote_port, 2419 remote_port->port_name, 2420 remote_port->port_id, 2421 remote_port->port_role, 2422 oldrport->ndlp, 2423 ndlp, 2424 ndlp->nlp_type, 2425 ndlp->nlp_DID); 2426 2427 /* It's a complete rebind only if the driver 2428 * is registering with the same ndlp. Otherwise 2429 * the driver likely executed a node swap 2430 * prior to this registration and the ndlp to 2431 * remoteport binding needs to be redone. 2432 */ 2433 if (prev_ndlp == ndlp) 2434 return 0; 2435 2436 } 2437 2438 /* Sever the ndlp<->rport association 2439 * before dropping the ndlp ref from 2440 * register. 2441 */ 2442 spin_lock_irq(&vport->phba->hbalock); 2443 ndlp->nrport = NULL; 2444 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG; 2445 spin_unlock_irq(&vport->phba->hbalock); 2446 rport->ndlp = NULL; 2447 rport->remoteport = NULL; 2448 2449 /* Reference only removed if previous NDLP is no longer 2450 * active. It might be just a swap and removing the 2451 * reference would cause a premature cleanup. 2452 */ 2453 if (prev_ndlp && prev_ndlp != ndlp) { 2454 if ((!NLP_CHK_NODE_ACT(prev_ndlp)) || 2455 (!prev_ndlp->nrport)) 2456 lpfc_nlp_put(prev_ndlp); 2457 } 2458 } 2459 2460 /* Clean bind the rport to the ndlp. */ 2461 rport->remoteport = remote_port; 2462 rport->lport = lport; 2463 rport->ndlp = ndlp; 2464 spin_lock_irq(&vport->phba->hbalock); 2465 ndlp->nrport = rport; 2466 spin_unlock_irq(&vport->phba->hbalock); 2467 lpfc_printf_vlog(vport, KERN_INFO, 2468 LOG_NVME_DISC | LOG_NODE, 2469 "6022 Bind lport x%px to remoteport x%px " 2470 "rport x%px WWNN 0x%llx, " 2471 "Rport WWPN 0x%llx DID " 2472 "x%06x Role x%x, ndlp %p prev_ndlp x%px\n", 2473 lport, remote_port, rport, 2474 rpinfo.node_name, rpinfo.port_name, 2475 rpinfo.port_id, rpinfo.port_role, 2476 ndlp, prev_ndlp); 2477 } else { 2478 lpfc_printf_vlog(vport, KERN_ERR, 2479 LOG_NVME_DISC | LOG_NODE, 2480 "6031 RemotePort Registration failed " 2481 "err: %d, DID x%06x\n", 2482 ret, ndlp->nlp_DID); 2483 } 2484 2485 return ret; 2486 #else 2487 return 0; 2488 #endif 2489 } 2490 2491 /** 2492 * lpfc_nvme_rescan_port - Check to see if we should rescan this remoteport 2493 * 2494 * If the ndlp represents an NVME Target, that we are logged into, 2495 * ping the NVME FC Transport layer to initiate a device rescan 2496 * on this remote NPort. 2497 */ 2498 void 2499 lpfc_nvme_rescan_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2500 { 2501 #if (IS_ENABLED(CONFIG_NVME_FC)) 2502 struct lpfc_nvme_rport *nrport; 2503 struct nvme_fc_remote_port *remoteport = NULL; 2504 2505 spin_lock_irq(&vport->phba->hbalock); 2506 nrport = lpfc_ndlp_get_nrport(ndlp); 2507 if (nrport) 2508 remoteport = nrport->remoteport; 2509 spin_unlock_irq(&vport->phba->hbalock); 2510 2511 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2512 "6170 Rescan NPort DID x%06x type x%x " 2513 "state x%x nrport x%px remoteport x%px\n", 2514 ndlp->nlp_DID, ndlp->nlp_type, ndlp->nlp_state, 2515 nrport, remoteport); 2516 2517 if (!nrport || !remoteport) 2518 goto rescan_exit; 2519 2520 /* Only rescan if we are an NVME target in the MAPPED state */ 2521 if (remoteport->port_role & FC_PORT_ROLE_NVME_DISCOVERY && 2522 ndlp->nlp_state == NLP_STE_MAPPED_NODE) { 2523 nvme_fc_rescan_remoteport(remoteport); 2524 2525 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 2526 "6172 NVME rescanned DID x%06x " 2527 "port_state x%x\n", 2528 ndlp->nlp_DID, remoteport->port_state); 2529 } 2530 return; 2531 rescan_exit: 2532 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2533 "6169 Skip NVME Rport Rescan, NVME remoteport " 2534 "unregistered\n"); 2535 #endif 2536 } 2537 2538 /* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. 2539 * 2540 * There is no notion of Devloss or rport recovery from the current 2541 * nvme_transport perspective. Loss of an rport just means IO cannot 2542 * be sent and recovery is completely up to the initator. 2543 * For now, the driver just unbinds the DID and port_role so that 2544 * no further IO can be issued. Changes are planned for later. 2545 * 2546 * Notes - the ndlp reference count is not decremented here since 2547 * since there is no nvme_transport api for devloss. Node ref count 2548 * is only adjusted in driver unload. 2549 */ 2550 void 2551 lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2552 { 2553 #if (IS_ENABLED(CONFIG_NVME_FC)) 2554 int ret; 2555 struct nvme_fc_local_port *localport; 2556 struct lpfc_nvme_lport *lport; 2557 struct lpfc_nvme_rport *rport; 2558 struct nvme_fc_remote_port *remoteport = NULL; 2559 2560 localport = vport->localport; 2561 2562 /* This is fundamental error. The localport is always 2563 * available until driver unload. Just exit. 2564 */ 2565 if (!localport) 2566 return; 2567 2568 lport = (struct lpfc_nvme_lport *)localport->private; 2569 if (!lport) 2570 goto input_err; 2571 2572 spin_lock_irq(&vport->phba->hbalock); 2573 rport = lpfc_ndlp_get_nrport(ndlp); 2574 if (rport) 2575 remoteport = rport->remoteport; 2576 spin_unlock_irq(&vport->phba->hbalock); 2577 if (!remoteport) 2578 goto input_err; 2579 2580 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2581 "6033 Unreg nvme remoteport x%px, portname x%llx, " 2582 "port_id x%06x, portstate x%x port type x%x\n", 2583 remoteport, remoteport->port_name, 2584 remoteport->port_id, remoteport->port_state, 2585 ndlp->nlp_type); 2586 2587 /* Sanity check ndlp type. Only call for NVME ports. Don't 2588 * clear any rport state until the transport calls back. 2589 */ 2590 2591 if (ndlp->nlp_type & NLP_NVME_TARGET) { 2592 /* No concern about the role change on the nvme remoteport. 2593 * The transport will update it. 2594 */ 2595 ndlp->upcall_flags |= NLP_WAIT_FOR_UNREG; 2596 2597 /* Don't let the host nvme transport keep sending keep-alives 2598 * on this remoteport. Vport is unloading, no recovery. The 2599 * return values is ignored. The upcall is a courtesy to the 2600 * transport. 2601 */ 2602 if (vport->load_flag & FC_UNLOADING) 2603 (void)nvme_fc_set_remoteport_devloss(remoteport, 0); 2604 2605 ret = nvme_fc_unregister_remoteport(remoteport); 2606 if (ret != 0) { 2607 lpfc_nlp_put(ndlp); 2608 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 2609 "6167 NVME unregister failed %d " 2610 "port_state x%x\n", 2611 ret, remoteport->port_state); 2612 } 2613 } 2614 return; 2615 2616 input_err: 2617 #endif 2618 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 2619 "6168 State error: lport x%px, rport x%px FCID x%06x\n", 2620 vport->localport, ndlp->rport, ndlp->nlp_DID); 2621 } 2622 2623 /** 2624 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort 2625 * @phba: pointer to lpfc hba data structure. 2626 * @axri: pointer to the fcp xri abort wcqe structure. 2627 * @lpfc_ncmd: The nvme job structure for the request being aborted. 2628 * 2629 * This routine is invoked by the worker thread to process a SLI4 fast-path 2630 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2631 * here. 2632 **/ 2633 void 2634 lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba, 2635 struct sli4_wcqe_xri_aborted *axri, 2636 struct lpfc_io_buf *lpfc_ncmd) 2637 { 2638 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 2639 struct nvmefc_fcp_req *nvme_cmd = NULL; 2640 struct lpfc_nodelist *ndlp = lpfc_ncmd->ndlp; 2641 2642 2643 if (ndlp) 2644 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 2645 2646 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2647 "6311 nvme_cmd %p xri x%x tag x%x abort complete and " 2648 "xri released\n", 2649 lpfc_ncmd->nvmeCmd, xri, 2650 lpfc_ncmd->cur_iocbq.iotag); 2651 2652 /* Aborted NVME commands are required to not complete 2653 * before the abort exchange command fully completes. 2654 * Once completed, it is available via the put list. 2655 */ 2656 if (lpfc_ncmd->nvmeCmd) { 2657 nvme_cmd = lpfc_ncmd->nvmeCmd; 2658 nvme_cmd->done(nvme_cmd); 2659 lpfc_ncmd->nvmeCmd = NULL; 2660 } 2661 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2662 } 2663 2664 /** 2665 * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete 2666 * @phba: Pointer to HBA context object. 2667 * 2668 * This function flushes all wqes in the nvme rings and frees all resources 2669 * in the txcmplq. This function does not issue abort wqes for the IO 2670 * commands in txcmplq, they will just be returned with 2671 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI 2672 * slot has been permanently disabled. 2673 **/ 2674 void 2675 lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba) 2676 { 2677 struct lpfc_sli_ring *pring; 2678 u32 i, wait_cnt = 0; 2679 2680 if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.hdwq) 2681 return; 2682 2683 /* Cycle through all IO rings and make sure all outstanding 2684 * WQEs have been removed from the txcmplqs. 2685 */ 2686 for (i = 0; i < phba->cfg_hdw_queue; i++) { 2687 if (!phba->sli4_hba.hdwq[i].io_wq) 2688 continue; 2689 pring = phba->sli4_hba.hdwq[i].io_wq->pring; 2690 2691 if (!pring) 2692 continue; 2693 2694 /* Retrieve everything on the txcmplq */ 2695 while (!list_empty(&pring->txcmplq)) { 2696 msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); 2697 wait_cnt++; 2698 2699 /* The sleep is 10mS. Every ten seconds, 2700 * dump a message. Something is wrong. 2701 */ 2702 if ((wait_cnt % 1000) == 0) { 2703 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2704 "6178 NVME IO not empty, " 2705 "cnt %d\n", wait_cnt); 2706 } 2707 } 2708 } 2709 } 2710 2711 void 2712 lpfc_nvme_cancel_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn) 2713 { 2714 #if (IS_ENABLED(CONFIG_NVME_FC)) 2715 struct lpfc_io_buf *lpfc_ncmd; 2716 struct nvmefc_fcp_req *nCmd; 2717 struct lpfc_nvme_fcpreq_priv *freqpriv; 2718 2719 if (!pwqeIn->context1) { 2720 lpfc_sli_release_iocbq(phba, pwqeIn); 2721 return; 2722 } 2723 /* For abort iocb just return, IO iocb will do a done call */ 2724 if (bf_get(wqe_cmnd, &pwqeIn->wqe.gen_req.wqe_com) == 2725 CMD_ABORT_XRI_CX) { 2726 lpfc_sli_release_iocbq(phba, pwqeIn); 2727 return; 2728 } 2729 lpfc_ncmd = (struct lpfc_io_buf *)pwqeIn->context1; 2730 2731 spin_lock(&lpfc_ncmd->buf_lock); 2732 if (!lpfc_ncmd->nvmeCmd) { 2733 spin_unlock(&lpfc_ncmd->buf_lock); 2734 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2735 return; 2736 } 2737 2738 nCmd = lpfc_ncmd->nvmeCmd; 2739 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2740 "6194 NVME Cancel xri %x\n", 2741 lpfc_ncmd->cur_iocbq.sli4_xritag); 2742 2743 nCmd->transferred_length = 0; 2744 nCmd->rcv_rsplen = 0; 2745 nCmd->status = NVME_SC_INTERNAL; 2746 freqpriv = nCmd->private; 2747 freqpriv->nvme_buf = NULL; 2748 lpfc_ncmd->nvmeCmd = NULL; 2749 2750 spin_unlock(&lpfc_ncmd->buf_lock); 2751 nCmd->done(nCmd); 2752 2753 /* Call release with XB=1 to queue the IO into the abort list. */ 2754 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2755 #endif 2756 } 2757