1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channel Host Bus Adapters. * 4 * Copyright (C) 2017-2018 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_nvme_buf * 60 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 61 int expedite); 62 63 static void 64 lpfc_release_nvme_buf(struct lpfc_hba *, struct lpfc_nvme_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 = 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 vport->phba->cfg_nvme_io_channel); 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 "io_channel %d qhandle %p\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 %p, qidx x%x qhandle %p\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 %p 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 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 %p\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 %p DID %x Xri: %x status %x reason x%x cmd:%p " 387 "lsreg:%p bmp:%p ndlp:%p\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 %p 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 memset(wqe, 0, sizeof(union lpfc_wqe)); 440 441 genwqe->context3 = (uint8_t *)bmp; 442 genwqe->iocb_flag |= LPFC_IO_NVME_LS; 443 444 /* Save for completion so we can release these resources */ 445 genwqe->context1 = lpfc_nlp_get(ndlp); 446 genwqe->context2 = (uint8_t *)pnvme_lsreq; 447 /* Fill in payload, bp points to frame payload */ 448 449 if (!tmo) 450 /* FC spec states we need 3 * ratov for CT requests */ 451 tmo = (3 * phba->fc_ratov); 452 453 /* For this command calculate the xmit length of the request bde. */ 454 xmit_len = 0; 455 first_len = 0; 456 bpl = (struct ulp_bde64 *)bmp->virt; 457 for (i = 0; i < num_entry; i++) { 458 bde.tus.w = bpl[i].tus.w; 459 if (bde.tus.f.bdeFlags != BUFF_TYPE_BDE_64) 460 break; 461 xmit_len += bde.tus.f.bdeSize; 462 if (i == 0) 463 first_len = xmit_len; 464 } 465 466 genwqe->rsvd2 = num_entry; 467 genwqe->hba_wqidx = 0; 468 469 /* Words 0 - 2 */ 470 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 471 wqe->generic.bde.tus.f.bdeSize = first_len; 472 wqe->generic.bde.addrLow = bpl[0].addrLow; 473 wqe->generic.bde.addrHigh = bpl[0].addrHigh; 474 475 /* Word 3 */ 476 wqe->gen_req.request_payload_len = first_len; 477 478 /* Word 4 */ 479 480 /* Word 5 */ 481 bf_set(wqe_dfctl, &wqe->gen_req.wge_ctl, 0); 482 bf_set(wqe_si, &wqe->gen_req.wge_ctl, 1); 483 bf_set(wqe_la, &wqe->gen_req.wge_ctl, 1); 484 bf_set(wqe_rctl, &wqe->gen_req.wge_ctl, FC_RCTL_ELS4_REQ); 485 bf_set(wqe_type, &wqe->gen_req.wge_ctl, FC_TYPE_NVME); 486 487 /* Word 6 */ 488 bf_set(wqe_ctxt_tag, &wqe->gen_req.wqe_com, 489 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 490 bf_set(wqe_xri_tag, &wqe->gen_req.wqe_com, genwqe->sli4_xritag); 491 492 /* Word 7 */ 493 bf_set(wqe_tmo, &wqe->gen_req.wqe_com, (vport->phba->fc_ratov-1)); 494 bf_set(wqe_class, &wqe->gen_req.wqe_com, CLASS3); 495 bf_set(wqe_cmnd, &wqe->gen_req.wqe_com, CMD_GEN_REQUEST64_WQE); 496 bf_set(wqe_ct, &wqe->gen_req.wqe_com, SLI4_CT_RPI); 497 498 /* Word 8 */ 499 wqe->gen_req.wqe_com.abort_tag = genwqe->iotag; 500 501 /* Word 9 */ 502 bf_set(wqe_reqtag, &wqe->gen_req.wqe_com, genwqe->iotag); 503 504 /* Word 10 */ 505 bf_set(wqe_dbde, &wqe->gen_req.wqe_com, 1); 506 bf_set(wqe_iod, &wqe->gen_req.wqe_com, LPFC_WQE_IOD_READ); 507 bf_set(wqe_qosd, &wqe->gen_req.wqe_com, 1); 508 bf_set(wqe_lenloc, &wqe->gen_req.wqe_com, LPFC_WQE_LENLOC_NONE); 509 bf_set(wqe_ebde_cnt, &wqe->gen_req.wqe_com, 0); 510 511 /* Word 11 */ 512 bf_set(wqe_cqid, &wqe->gen_req.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 513 bf_set(wqe_cmd_type, &wqe->gen_req.wqe_com, OTHER_COMMAND); 514 515 516 /* Issue GEN REQ WQE for NPORT <did> */ 517 lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS, 518 "6050 Issue GEN REQ WQE to NPORT x%x " 519 "Data: x%x x%x wq:%p lsreq:%p bmp:%p xmit:%d 1st:%d\n", 520 ndlp->nlp_DID, genwqe->iotag, 521 vport->port_state, 522 genwqe, pnvme_lsreq, bmp, xmit_len, first_len); 523 genwqe->wqe_cmpl = cmpl; 524 genwqe->iocb_cmpl = NULL; 525 genwqe->drvrTimeout = tmo + LPFC_DRVR_TIMEOUT; 526 genwqe->vport = vport; 527 genwqe->retry = retry; 528 529 lpfc_nvmeio_data(phba, "NVME LS XMIT: xri x%x iotag x%x to x%06x\n", 530 genwqe->sli4_xritag, genwqe->iotag, ndlp->nlp_DID); 531 532 rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, genwqe); 533 if (rc) { 534 lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS, 535 "6045 Issue GEN REQ WQE to NPORT x%x " 536 "Data: x%x x%x\n", 537 ndlp->nlp_DID, genwqe->iotag, 538 vport->port_state); 539 lpfc_sli_release_iocbq(phba, genwqe); 540 return 1; 541 } 542 return 0; 543 } 544 545 /** 546 * lpfc_nvme_ls_req - Issue an Link Service request 547 * @lpfc_pnvme: Pointer to the driver's nvme instance data 548 * @lpfc_nvme_lport: Pointer to the driver's local port data 549 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 550 * 551 * Driver registers this routine to handle any link service request 552 * from the nvme_fc transport to a remote nvme-aware port. 553 * 554 * Return value : 555 * 0 - Success 556 * TODO: What are the failure codes. 557 **/ 558 static int 559 lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, 560 struct nvme_fc_remote_port *pnvme_rport, 561 struct nvmefc_ls_req *pnvme_lsreq) 562 { 563 int ret = 0; 564 struct lpfc_nvme_lport *lport; 565 struct lpfc_nvme_rport *rport; 566 struct lpfc_vport *vport; 567 struct lpfc_nodelist *ndlp; 568 struct ulp_bde64 *bpl; 569 struct lpfc_dmabuf *bmp; 570 uint16_t ntype, nstate; 571 572 /* there are two dma buf in the request, actually there is one and 573 * the second one is just the start address + cmd size. 574 * Before calling lpfc_nvme_gen_req these buffers need to be wrapped 575 * in a lpfc_dmabuf struct. When freeing we just free the wrapper 576 * because the nvem layer owns the data bufs. 577 * We do not have to break these packets open, we don't care what is in 578 * them. And we do not have to look at the resonse data, we only care 579 * that we got a response. All of the caring is going to happen in the 580 * nvme-fc layer. 581 */ 582 583 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 584 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 585 if (unlikely(!lport) || unlikely(!rport)) 586 return -EINVAL; 587 588 vport = lport->vport; 589 590 if (vport->load_flag & FC_UNLOADING) 591 return -ENODEV; 592 593 /* Need the ndlp. It is stored in the driver's rport. */ 594 ndlp = rport->ndlp; 595 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 596 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 597 "6051 Remoteport %p, rport has invalid ndlp. " 598 "Failing LS Req\n", pnvme_rport); 599 return -ENODEV; 600 } 601 602 /* The remote node has to be a mapped nvme target or an 603 * unmapped nvme initiator or it's an error. 604 */ 605 ntype = ndlp->nlp_type; 606 nstate = ndlp->nlp_state; 607 if ((ntype & NLP_NVME_TARGET && nstate != NLP_STE_MAPPED_NODE) || 608 (ntype & NLP_NVME_INITIATOR && nstate != NLP_STE_UNMAPPED_NODE)) { 609 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 610 "6088 DID x%06x not ready for " 611 "IO. State x%x, Type x%x\n", 612 pnvme_rport->port_id, 613 ndlp->nlp_state, ndlp->nlp_type); 614 return -ENODEV; 615 } 616 bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL); 617 if (!bmp) { 618 619 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 620 "6044 Could not find node for DID %x\n", 621 pnvme_rport->port_id); 622 return 2; 623 } 624 INIT_LIST_HEAD(&bmp->list); 625 bmp->virt = lpfc_mbuf_alloc(vport->phba, MEM_PRI, &(bmp->phys)); 626 if (!bmp->virt) { 627 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 628 "6042 Could not find node for DID %x\n", 629 pnvme_rport->port_id); 630 kfree(bmp); 631 return 3; 632 } 633 bpl = (struct ulp_bde64 *)bmp->virt; 634 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rqstdma)); 635 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rqstdma)); 636 bpl->tus.f.bdeFlags = 0; 637 bpl->tus.f.bdeSize = pnvme_lsreq->rqstlen; 638 bpl->tus.w = le32_to_cpu(bpl->tus.w); 639 bpl++; 640 641 bpl->addrHigh = le32_to_cpu(putPaddrHigh(pnvme_lsreq->rspdma)); 642 bpl->addrLow = le32_to_cpu(putPaddrLow(pnvme_lsreq->rspdma)); 643 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; 644 bpl->tus.f.bdeSize = pnvme_lsreq->rsplen; 645 bpl->tus.w = le32_to_cpu(bpl->tus.w); 646 647 /* Expand print to include key fields. */ 648 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 649 "6149 Issue LS Req to DID 0x%06x lport %p, rport %p " 650 "lsreq%p rqstlen:%d rsplen:%d %pad %pad\n", 651 ndlp->nlp_DID, 652 pnvme_lport, pnvme_rport, 653 pnvme_lsreq, pnvme_lsreq->rqstlen, 654 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 655 &pnvme_lsreq->rspdma); 656 657 atomic_inc(&lport->fc4NvmeLsRequests); 658 659 /* Hardcode the wait to 30 seconds. Connections are failing otherwise. 660 * This code allows it all to work. 661 */ 662 ret = lpfc_nvme_gen_req(vport, bmp, pnvme_lsreq->rqstaddr, 663 pnvme_lsreq, lpfc_nvme_cmpl_gen_req, 664 ndlp, 2, 30, 0); 665 if (ret != WQE_SUCCESS) { 666 atomic_inc(&lport->xmt_ls_err); 667 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 668 "6052 EXIT. issue ls wqe failed lport %p, " 669 "rport %p lsreq%p Status %x DID %x\n", 670 pnvme_lport, pnvme_rport, pnvme_lsreq, 671 ret, ndlp->nlp_DID); 672 lpfc_mbuf_free(vport->phba, bmp->virt, bmp->phys); 673 kfree(bmp); 674 return ret; 675 } 676 677 /* Stub in routine and return 0 for now. */ 678 return ret; 679 } 680 681 /** 682 * lpfc_nvme_ls_abort - Issue an Link Service request 683 * @lpfc_pnvme: Pointer to the driver's nvme instance data 684 * @lpfc_nvme_lport: Pointer to the driver's local port data 685 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 686 * 687 * Driver registers this routine to handle any link service request 688 * from the nvme_fc transport to a remote nvme-aware port. 689 * 690 * Return value : 691 * 0 - Success 692 * TODO: What are the failure codes. 693 **/ 694 static void 695 lpfc_nvme_ls_abort(struct nvme_fc_local_port *pnvme_lport, 696 struct nvme_fc_remote_port *pnvme_rport, 697 struct nvmefc_ls_req *pnvme_lsreq) 698 { 699 struct lpfc_nvme_lport *lport; 700 struct lpfc_vport *vport; 701 struct lpfc_hba *phba; 702 struct lpfc_nodelist *ndlp; 703 LIST_HEAD(abort_list); 704 struct lpfc_sli_ring *pring; 705 struct lpfc_iocbq *wqe, *next_wqe; 706 707 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 708 if (unlikely(!lport)) 709 return; 710 vport = lport->vport; 711 phba = vport->phba; 712 713 if (vport->load_flag & FC_UNLOADING) 714 return; 715 716 ndlp = lpfc_findnode_did(vport, pnvme_rport->port_id); 717 if (!ndlp) { 718 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 719 "6049 Could not find node for DID %x\n", 720 pnvme_rport->port_id); 721 return; 722 } 723 724 /* Expand print to include key fields. */ 725 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 726 "6040 ENTER. lport %p, rport %p lsreq %p rqstlen:%d " 727 "rsplen:%d %pad %pad\n", 728 pnvme_lport, pnvme_rport, 729 pnvme_lsreq, pnvme_lsreq->rqstlen, 730 pnvme_lsreq->rsplen, &pnvme_lsreq->rqstdma, 731 &pnvme_lsreq->rspdma); 732 733 /* 734 * Lock the ELS ring txcmplq and build a local list of all ELS IOs 735 * that need an ABTS. The IOs need to stay on the txcmplq so that 736 * the abort operation completes them successfully. 737 */ 738 pring = phba->sli4_hba.nvmels_wq->pring; 739 spin_lock_irq(&phba->hbalock); 740 spin_lock(&pring->ring_lock); 741 list_for_each_entry_safe(wqe, next_wqe, &pring->txcmplq, list) { 742 /* Add to abort_list on on NDLP match. */ 743 if (lpfc_check_sli_ndlp(phba, pring, wqe, ndlp)) { 744 wqe->iocb_flag |= LPFC_DRIVER_ABORTED; 745 list_add_tail(&wqe->dlist, &abort_list); 746 } 747 } 748 spin_unlock(&pring->ring_lock); 749 spin_unlock_irq(&phba->hbalock); 750 751 /* Abort the targeted IOs and remove them from the abort list. */ 752 list_for_each_entry_safe(wqe, next_wqe, &abort_list, dlist) { 753 atomic_inc(&lport->xmt_ls_abort); 754 spin_lock_irq(&phba->hbalock); 755 list_del_init(&wqe->dlist); 756 lpfc_sli_issue_abort_iotag(phba, pring, wqe); 757 spin_unlock_irq(&phba->hbalock); 758 } 759 } 760 761 /* Fix up the existing sgls for NVME IO. */ 762 static inline void 763 lpfc_nvme_adj_fcp_sgls(struct lpfc_vport *vport, 764 struct lpfc_nvme_buf *lpfc_ncmd, 765 struct nvmefc_fcp_req *nCmd) 766 { 767 struct lpfc_hba *phba = vport->phba; 768 struct sli4_sge *sgl; 769 union lpfc_wqe128 *wqe; 770 uint32_t *wptr, *dptr; 771 772 /* 773 * Get a local pointer to the built-in wqe and correct 774 * the cmd size to match NVME's 96 bytes and fix 775 * the dma address. 776 */ 777 778 wqe = &lpfc_ncmd->cur_iocbq.wqe; 779 780 /* 781 * Adjust the FCP_CMD and FCP_RSP DMA data and sge_len to 782 * match NVME. NVME sends 96 bytes. Also, use the 783 * nvme commands command and response dma addresses 784 * rather than the virtual memory to ease the restore 785 * operation. 786 */ 787 sgl = lpfc_ncmd->nvme_sgl; 788 sgl->sge_len = cpu_to_le32(nCmd->cmdlen); 789 if (phba->cfg_nvme_embed_cmd) { 790 sgl->addr_hi = 0; 791 sgl->addr_lo = 0; 792 793 /* Word 0-2 - NVME CMND IU (embedded payload) */ 794 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_IMMED; 795 wqe->generic.bde.tus.f.bdeSize = 56; 796 wqe->generic.bde.addrHigh = 0; 797 wqe->generic.bde.addrLow = 64; /* Word 16 */ 798 799 /* Word 10 - dbde is 0, wqes is 1 in template */ 800 801 /* 802 * Embed the payload in the last half of the WQE 803 * WQE words 16-30 get the NVME CMD IU payload 804 * 805 * WQE words 16-19 get payload Words 1-4 806 * WQE words 20-21 get payload Words 6-7 807 * WQE words 22-29 get payload Words 16-23 808 */ 809 wptr = &wqe->words[16]; /* WQE ptr */ 810 dptr = (uint32_t *)nCmd->cmdaddr; /* payload ptr */ 811 dptr++; /* Skip Word 0 in payload */ 812 813 *wptr++ = *dptr++; /* Word 1 */ 814 *wptr++ = *dptr++; /* Word 2 */ 815 *wptr++ = *dptr++; /* Word 3 */ 816 *wptr++ = *dptr++; /* Word 4 */ 817 dptr++; /* Skip Word 5 in payload */ 818 *wptr++ = *dptr++; /* Word 6 */ 819 *wptr++ = *dptr++; /* Word 7 */ 820 dptr += 8; /* Skip Words 8-15 in payload */ 821 *wptr++ = *dptr++; /* Word 16 */ 822 *wptr++ = *dptr++; /* Word 17 */ 823 *wptr++ = *dptr++; /* Word 18 */ 824 *wptr++ = *dptr++; /* Word 19 */ 825 *wptr++ = *dptr++; /* Word 20 */ 826 *wptr++ = *dptr++; /* Word 21 */ 827 *wptr++ = *dptr++; /* Word 22 */ 828 *wptr = *dptr; /* Word 23 */ 829 } else { 830 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->cmddma)); 831 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->cmddma)); 832 833 /* Word 0-2 - NVME CMND IU Inline BDE */ 834 wqe->generic.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 835 wqe->generic.bde.tus.f.bdeSize = nCmd->cmdlen; 836 wqe->generic.bde.addrHigh = sgl->addr_hi; 837 wqe->generic.bde.addrLow = sgl->addr_lo; 838 839 /* Word 10 */ 840 bf_set(wqe_dbde, &wqe->generic.wqe_com, 1); 841 bf_set(wqe_wqes, &wqe->generic.wqe_com, 0); 842 } 843 844 sgl++; 845 846 /* Setup the physical region for the FCP RSP */ 847 sgl->addr_hi = cpu_to_le32(putPaddrHigh(nCmd->rspdma)); 848 sgl->addr_lo = cpu_to_le32(putPaddrLow(nCmd->rspdma)); 849 sgl->word2 = le32_to_cpu(sgl->word2); 850 if (nCmd->sg_cnt) 851 bf_set(lpfc_sli4_sge_last, sgl, 0); 852 else 853 bf_set(lpfc_sli4_sge_last, sgl, 1); 854 sgl->word2 = cpu_to_le32(sgl->word2); 855 sgl->sge_len = cpu_to_le32(nCmd->rsplen); 856 } 857 858 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 859 static void 860 lpfc_nvme_ktime(struct lpfc_hba *phba, 861 struct lpfc_nvme_buf *lpfc_ncmd) 862 { 863 uint64_t seg1, seg2, seg3, seg4; 864 uint64_t segsum; 865 866 if (!lpfc_ncmd->ts_last_cmd || 867 !lpfc_ncmd->ts_cmd_start || 868 !lpfc_ncmd->ts_cmd_wqput || 869 !lpfc_ncmd->ts_isr_cmpl || 870 !lpfc_ncmd->ts_data_nvme) 871 return; 872 873 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_cmd_start) 874 return; 875 if (lpfc_ncmd->ts_cmd_start < lpfc_ncmd->ts_last_cmd) 876 return; 877 if (lpfc_ncmd->ts_cmd_wqput < lpfc_ncmd->ts_cmd_start) 878 return; 879 if (lpfc_ncmd->ts_isr_cmpl < lpfc_ncmd->ts_cmd_wqput) 880 return; 881 if (lpfc_ncmd->ts_data_nvme < lpfc_ncmd->ts_isr_cmpl) 882 return; 883 /* 884 * Segment 1 - Time from Last FCP command cmpl is handed 885 * off to NVME Layer to start of next command. 886 * Segment 2 - Time from Driver receives a IO cmd start 887 * from NVME Layer to WQ put is done on IO cmd. 888 * Segment 3 - Time from Driver WQ put is done on IO cmd 889 * to MSI-X ISR for IO cmpl. 890 * Segment 4 - Time from MSI-X ISR for IO cmpl to when 891 * cmpl is handled off to the NVME Layer. 892 */ 893 seg1 = lpfc_ncmd->ts_cmd_start - lpfc_ncmd->ts_last_cmd; 894 if (seg1 > 5000000) /* 5 ms - for sequential IOs only */ 895 seg1 = 0; 896 897 /* Calculate times relative to start of IO */ 898 seg2 = (lpfc_ncmd->ts_cmd_wqput - lpfc_ncmd->ts_cmd_start); 899 segsum = seg2; 900 seg3 = lpfc_ncmd->ts_isr_cmpl - lpfc_ncmd->ts_cmd_start; 901 if (segsum > seg3) 902 return; 903 seg3 -= segsum; 904 segsum += seg3; 905 906 seg4 = lpfc_ncmd->ts_data_nvme - lpfc_ncmd->ts_cmd_start; 907 if (segsum > seg4) 908 return; 909 seg4 -= segsum; 910 911 phba->ktime_data_samples++; 912 phba->ktime_seg1_total += seg1; 913 if (seg1 < phba->ktime_seg1_min) 914 phba->ktime_seg1_min = seg1; 915 else if (seg1 > phba->ktime_seg1_max) 916 phba->ktime_seg1_max = seg1; 917 phba->ktime_seg2_total += seg2; 918 if (seg2 < phba->ktime_seg2_min) 919 phba->ktime_seg2_min = seg2; 920 else if (seg2 > phba->ktime_seg2_max) 921 phba->ktime_seg2_max = seg2; 922 phba->ktime_seg3_total += seg3; 923 if (seg3 < phba->ktime_seg3_min) 924 phba->ktime_seg3_min = seg3; 925 else if (seg3 > phba->ktime_seg3_max) 926 phba->ktime_seg3_max = seg3; 927 phba->ktime_seg4_total += seg4; 928 if (seg4 < phba->ktime_seg4_min) 929 phba->ktime_seg4_min = seg4; 930 else if (seg4 > phba->ktime_seg4_max) 931 phba->ktime_seg4_max = seg4; 932 933 lpfc_ncmd->ts_last_cmd = 0; 934 lpfc_ncmd->ts_cmd_start = 0; 935 lpfc_ncmd->ts_cmd_wqput = 0; 936 lpfc_ncmd->ts_isr_cmpl = 0; 937 lpfc_ncmd->ts_data_nvme = 0; 938 } 939 #endif 940 941 /** 942 * lpfc_nvme_io_cmd_wqe_cmpl - Complete an NVME-over-FCP IO 943 * @lpfc_pnvme: Pointer to the driver's nvme instance data 944 * @lpfc_nvme_lport: Pointer to the driver's local port data 945 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 946 * 947 * Driver registers this routine as it io request handler. This 948 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 949 * data structure to the rport indicated in @lpfc_nvme_rport. 950 * 951 * Return value : 952 * 0 - Success 953 * TODO: What are the failure codes. 954 **/ 955 static void 956 lpfc_nvme_io_cmd_wqe_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pwqeIn, 957 struct lpfc_wcqe_complete *wcqe) 958 { 959 struct lpfc_nvme_buf *lpfc_ncmd = 960 (struct lpfc_nvme_buf *)pwqeIn->context1; 961 struct lpfc_vport *vport = pwqeIn->vport; 962 struct nvmefc_fcp_req *nCmd; 963 struct nvme_fc_ersp_iu *ep; 964 struct nvme_fc_cmd_iu *cp; 965 struct lpfc_nvme_rport *rport; 966 struct lpfc_nodelist *ndlp; 967 struct lpfc_nvme_fcpreq_priv *freqpriv; 968 struct lpfc_nvme_lport *lport; 969 struct lpfc_nvme_ctrl_stat *cstat; 970 unsigned long flags; 971 uint32_t code, status, idx; 972 uint16_t cid, sqhd, data; 973 uint32_t *ptr; 974 975 /* Sanity check on return of outstanding command */ 976 if (!lpfc_ncmd || !lpfc_ncmd->nvmeCmd || !lpfc_ncmd->nrport) { 977 if (!lpfc_ncmd) { 978 lpfc_printf_vlog(vport, KERN_ERR, 979 LOG_NODE | LOG_NVME_IOERR, 980 "6071 Null lpfc_ncmd pointer. No " 981 "release, skip completion\n"); 982 return; 983 } 984 985 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 986 "6066 Missing cmpl ptrs: lpfc_ncmd %p, " 987 "nvmeCmd %p nrport %p\n", 988 lpfc_ncmd, lpfc_ncmd->nvmeCmd, 989 lpfc_ncmd->nrport); 990 991 /* Release the lpfc_ncmd regardless of the missing elements. */ 992 lpfc_release_nvme_buf(phba, lpfc_ncmd); 993 return; 994 } 995 nCmd = lpfc_ncmd->nvmeCmd; 996 rport = lpfc_ncmd->nrport; 997 status = bf_get(lpfc_wcqe_c_status, wcqe); 998 999 if (vport->localport) { 1000 lport = (struct lpfc_nvme_lport *)vport->localport->private; 1001 if (lport) { 1002 idx = lpfc_ncmd->cur_iocbq.hba_wqidx; 1003 cstat = &lport->cstat[idx]; 1004 atomic_inc(&cstat->fc4NvmeIoCmpls); 1005 if (status) { 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 1013 lpfc_nvmeio_data(phba, "NVME FCP CMPL: xri x%x stat x%x parm x%x\n", 1014 lpfc_ncmd->cur_iocbq.sli4_xritag, 1015 status, wcqe->parameter); 1016 /* 1017 * Catch race where our node has transitioned, but the 1018 * transport is still transitioning. 1019 */ 1020 ndlp = rport->ndlp; 1021 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 1022 lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE | LOG_NVME_IOERR, 1023 "6061 rport %p, DID x%06x node not ready.\n", 1024 rport, rport->remoteport->port_id); 1025 1026 ndlp = lpfc_findnode_did(vport, rport->remoteport->port_id); 1027 if (!ndlp) { 1028 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 1029 "6062 Ignoring NVME cmpl. No ndlp\n"); 1030 goto out_err; 1031 } 1032 } 1033 1034 code = bf_get(lpfc_wcqe_c_code, wcqe); 1035 if (code == CQE_CODE_NVME_ERSP) { 1036 /* For this type of CQE, we need to rebuild the rsp */ 1037 ep = (struct nvme_fc_ersp_iu *)nCmd->rspaddr; 1038 1039 /* 1040 * Get Command Id from cmd to plug into response. This 1041 * code is not needed in the next NVME Transport drop. 1042 */ 1043 cp = (struct nvme_fc_cmd_iu *)nCmd->cmdaddr; 1044 cid = cp->sqe.common.command_id; 1045 1046 /* 1047 * RSN is in CQE word 2 1048 * SQHD is in CQE Word 3 bits 15:0 1049 * Cmd Specific info is in CQE Word 1 1050 * and in CQE Word 0 bits 15:0 1051 */ 1052 sqhd = bf_get(lpfc_wcqe_c_sqhead, wcqe); 1053 1054 /* Now lets build the NVME ERSP IU */ 1055 ep->iu_len = cpu_to_be16(8); 1056 ep->rsn = wcqe->parameter; 1057 ep->xfrd_len = cpu_to_be32(nCmd->payload_length); 1058 ep->rsvd12 = 0; 1059 ptr = (uint32_t *)&ep->cqe.result.u64; 1060 *ptr++ = wcqe->total_data_placed; 1061 data = bf_get(lpfc_wcqe_c_ersp0, wcqe); 1062 *ptr = (uint32_t)data; 1063 ep->cqe.sq_head = sqhd; 1064 ep->cqe.sq_id = nCmd->sqid; 1065 ep->cqe.command_id = cid; 1066 ep->cqe.status = 0; 1067 1068 lpfc_ncmd->status = IOSTAT_SUCCESS; 1069 lpfc_ncmd->result = 0; 1070 nCmd->rcv_rsplen = LPFC_NVME_ERSP_LEN; 1071 nCmd->transferred_length = nCmd->payload_length; 1072 } else { 1073 lpfc_ncmd->status = (status & LPFC_IOCB_STATUS_MASK); 1074 lpfc_ncmd->result = (wcqe->parameter & IOERR_PARAM_MASK); 1075 1076 /* For NVME, the only failure path that results in an 1077 * IO error is when the adapter rejects it. All other 1078 * conditions are a success case and resolved by the 1079 * transport. 1080 * IOSTAT_FCP_RSP_ERROR means: 1081 * 1. Length of data received doesn't match total 1082 * transfer length in WQE 1083 * 2. If the RSP payload does NOT match these cases: 1084 * a. RSP length 12/24 bytes and all zeros 1085 * b. NVME ERSP 1086 */ 1087 switch (lpfc_ncmd->status) { 1088 case IOSTAT_SUCCESS: 1089 nCmd->transferred_length = wcqe->total_data_placed; 1090 nCmd->rcv_rsplen = 0; 1091 nCmd->status = 0; 1092 break; 1093 case IOSTAT_FCP_RSP_ERROR: 1094 nCmd->transferred_length = wcqe->total_data_placed; 1095 nCmd->rcv_rsplen = wcqe->parameter; 1096 nCmd->status = 0; 1097 /* Sanity check */ 1098 if (nCmd->rcv_rsplen == LPFC_NVME_ERSP_LEN) 1099 break; 1100 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 1101 "6081 NVME Completion Protocol Error: " 1102 "xri %x status x%x result x%x " 1103 "placed x%x\n", 1104 lpfc_ncmd->cur_iocbq.sli4_xritag, 1105 lpfc_ncmd->status, lpfc_ncmd->result, 1106 wcqe->total_data_placed); 1107 break; 1108 case IOSTAT_LOCAL_REJECT: 1109 /* Let fall through to set command final state. */ 1110 if (lpfc_ncmd->result == IOERR_ABORT_REQUESTED) 1111 lpfc_printf_vlog(vport, KERN_INFO, 1112 LOG_NVME_IOERR, 1113 "6032 Delay Aborted cmd %p " 1114 "nvme cmd %p, xri x%x, " 1115 "xb %d\n", 1116 lpfc_ncmd, nCmd, 1117 lpfc_ncmd->cur_iocbq.sli4_xritag, 1118 bf_get(lpfc_wcqe_c_xb, wcqe)); 1119 default: 1120 out_err: 1121 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1122 "6072 NVME Completion Error: xri %x " 1123 "status x%x result x%x placed x%x\n", 1124 lpfc_ncmd->cur_iocbq.sli4_xritag, 1125 lpfc_ncmd->status, lpfc_ncmd->result, 1126 wcqe->total_data_placed); 1127 nCmd->transferred_length = 0; 1128 nCmd->rcv_rsplen = 0; 1129 nCmd->status = NVME_SC_INTERNAL; 1130 } 1131 } 1132 1133 /* pick up SLI4 exhange busy condition */ 1134 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 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_nvme = ktime_get_ns(); 1147 phba->ktime_last_cmd = lpfc_ncmd->ts_data_nvme; 1148 lpfc_nvme_ktime(phba, lpfc_ncmd); 1149 } 1150 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) { 1151 if (lpfc_ncmd->cpu != smp_processor_id()) 1152 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 1153 "6701 CPU Check cmpl: " 1154 "cpu %d expect %d\n", 1155 smp_processor_id(), lpfc_ncmd->cpu); 1156 if (lpfc_ncmd->cpu < LPFC_CHECK_CPU_CNT) 1157 phba->cpucheck_cmpl_io[lpfc_ncmd->cpu]++; 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 nCmd->done(nCmd); 1169 lpfc_ncmd->nvmeCmd = NULL; 1170 } 1171 1172 spin_lock_irqsave(&phba->hbalock, flags); 1173 lpfc_ncmd->nrport = NULL; 1174 spin_unlock_irqrestore(&phba->hbalock, flags); 1175 1176 /* Call release with XB=1 to queue the IO into the abort list. */ 1177 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1178 } 1179 1180 1181 /** 1182 * lpfc_nvme_prep_io_cmd - Issue an NVME-over-FCP IO 1183 * @lpfc_pnvme: Pointer to the driver's nvme instance data 1184 * @lpfc_nvme_lport: Pointer to the driver's local port data 1185 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1186 * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 1187 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1188 * 1189 * Driver registers this routine as it io request handler. This 1190 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1191 * data structure to the rport indicated in @lpfc_nvme_rport. 1192 * 1193 * Return value : 1194 * 0 - Success 1195 * TODO: What are the failure codes. 1196 **/ 1197 static int 1198 lpfc_nvme_prep_io_cmd(struct lpfc_vport *vport, 1199 struct lpfc_nvme_buf *lpfc_ncmd, 1200 struct lpfc_nodelist *pnode, 1201 struct lpfc_nvme_ctrl_stat *cstat) 1202 { 1203 struct lpfc_hba *phba = vport->phba; 1204 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1205 struct lpfc_iocbq *pwqeq = &(lpfc_ncmd->cur_iocbq); 1206 union lpfc_wqe128 *wqe = &pwqeq->wqe; 1207 uint32_t req_len; 1208 1209 if (!pnode || !NLP_CHK_NODE_ACT(pnode)) 1210 return -EINVAL; 1211 1212 /* 1213 * There are three possibilities here - use scatter-gather segment, use 1214 * the single mapping, or neither. 1215 */ 1216 if (nCmd->sg_cnt) { 1217 if (nCmd->io_dir == NVMEFC_FCP_WRITE) { 1218 /* From the iwrite template, initialize words 7 - 11 */ 1219 memcpy(&wqe->words[7], 1220 &lpfc_iwrite_cmd_template.words[7], 1221 sizeof(uint32_t) * 5); 1222 1223 /* Word 4 */ 1224 wqe->fcp_iwrite.total_xfer_len = nCmd->payload_length; 1225 1226 /* Word 5 */ 1227 if ((phba->cfg_nvme_enable_fb) && 1228 (pnode->nlp_flag & NLP_FIRSTBURST)) { 1229 req_len = lpfc_ncmd->nvmeCmd->payload_length; 1230 if (req_len < pnode->nvme_fb_size) 1231 wqe->fcp_iwrite.initial_xfer_len = 1232 req_len; 1233 else 1234 wqe->fcp_iwrite.initial_xfer_len = 1235 pnode->nvme_fb_size; 1236 } else { 1237 wqe->fcp_iwrite.initial_xfer_len = 0; 1238 } 1239 atomic_inc(&cstat->fc4NvmeOutputRequests); 1240 } else { 1241 /* From the iread template, initialize words 7 - 11 */ 1242 memcpy(&wqe->words[7], 1243 &lpfc_iread_cmd_template.words[7], 1244 sizeof(uint32_t) * 5); 1245 1246 /* Word 4 */ 1247 wqe->fcp_iread.total_xfer_len = nCmd->payload_length; 1248 1249 /* Word 5 */ 1250 wqe->fcp_iread.rsrvd5 = 0; 1251 1252 atomic_inc(&cstat->fc4NvmeInputRequests); 1253 } 1254 } else { 1255 /* From the icmnd template, initialize words 4 - 11 */ 1256 memcpy(&wqe->words[4], &lpfc_icmnd_cmd_template.words[4], 1257 sizeof(uint32_t) * 8); 1258 atomic_inc(&cstat->fc4NvmeControlRequests); 1259 } 1260 /* 1261 * Finish initializing those WQE fields that are independent 1262 * of the nvme_cmnd request_buffer 1263 */ 1264 1265 /* Word 3 */ 1266 bf_set(payload_offset_len, &wqe->fcp_icmd, 1267 (nCmd->rsplen + nCmd->cmdlen)); 1268 1269 /* Word 6 */ 1270 bf_set(wqe_ctxt_tag, &wqe->generic.wqe_com, 1271 phba->sli4_hba.rpi_ids[pnode->nlp_rpi]); 1272 bf_set(wqe_xri_tag, &wqe->generic.wqe_com, pwqeq->sli4_xritag); 1273 1274 /* Word 8 */ 1275 wqe->generic.wqe_com.abort_tag = pwqeq->iotag; 1276 1277 /* Word 9 */ 1278 bf_set(wqe_reqtag, &wqe->generic.wqe_com, pwqeq->iotag); 1279 1280 /* Words 13 14 15 are for PBDE support */ 1281 1282 pwqeq->vport = vport; 1283 return 0; 1284 } 1285 1286 1287 /** 1288 * lpfc_nvme_prep_io_dma - Issue an NVME-over-FCP IO 1289 * @lpfc_pnvme: Pointer to the driver's nvme instance data 1290 * @lpfc_nvme_lport: Pointer to the driver's local port data 1291 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1292 * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 1293 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1294 * 1295 * Driver registers this routine as it io request handler. This 1296 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1297 * data structure to the rport indicated in @lpfc_nvme_rport. 1298 * 1299 * Return value : 1300 * 0 - Success 1301 * TODO: What are the failure codes. 1302 **/ 1303 static int 1304 lpfc_nvme_prep_io_dma(struct lpfc_vport *vport, 1305 struct lpfc_nvme_buf *lpfc_ncmd) 1306 { 1307 struct lpfc_hba *phba = vport->phba; 1308 struct nvmefc_fcp_req *nCmd = lpfc_ncmd->nvmeCmd; 1309 union lpfc_wqe128 *wqe = &lpfc_ncmd->cur_iocbq.wqe; 1310 struct sli4_sge *sgl = lpfc_ncmd->nvme_sgl; 1311 struct scatterlist *data_sg; 1312 struct sli4_sge *first_data_sgl; 1313 struct ulp_bde64 *bde; 1314 dma_addr_t physaddr; 1315 uint32_t num_bde = 0; 1316 uint32_t dma_len; 1317 uint32_t dma_offset = 0; 1318 int nseg, i; 1319 1320 /* Fix up the command and response DMA stuff. */ 1321 lpfc_nvme_adj_fcp_sgls(vport, lpfc_ncmd, nCmd); 1322 1323 /* 1324 * There are three possibilities here - use scatter-gather segment, use 1325 * the single mapping, or neither. 1326 */ 1327 if (nCmd->sg_cnt) { 1328 /* 1329 * Jump over the cmd and rsp SGEs. The fix routine 1330 * has already adjusted for this. 1331 */ 1332 sgl += 2; 1333 1334 first_data_sgl = sgl; 1335 lpfc_ncmd->seg_cnt = nCmd->sg_cnt; 1336 if (lpfc_ncmd->seg_cnt > lpfc_nvme_template.max_sgl_segments) { 1337 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1338 "6058 Too many sg segments from " 1339 "NVME Transport. Max %d, " 1340 "nvmeIO sg_cnt %d\n", 1341 phba->cfg_nvme_seg_cnt + 1, 1342 lpfc_ncmd->seg_cnt); 1343 lpfc_ncmd->seg_cnt = 0; 1344 return 1; 1345 } 1346 1347 /* 1348 * The driver established a maximum scatter-gather segment count 1349 * during probe that limits the number of sg elements in any 1350 * single nvme command. Just run through the seg_cnt and format 1351 * the sge's. 1352 */ 1353 nseg = nCmd->sg_cnt; 1354 data_sg = nCmd->first_sgl; 1355 for (i = 0; i < nseg; i++) { 1356 if (data_sg == NULL) { 1357 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1358 "6059 dptr err %d, nseg %d\n", 1359 i, nseg); 1360 lpfc_ncmd->seg_cnt = 0; 1361 return 1; 1362 } 1363 physaddr = data_sg->dma_address; 1364 dma_len = data_sg->length; 1365 sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); 1366 sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); 1367 sgl->word2 = le32_to_cpu(sgl->word2); 1368 if ((num_bde + 1) == nseg) 1369 bf_set(lpfc_sli4_sge_last, sgl, 1); 1370 else 1371 bf_set(lpfc_sli4_sge_last, sgl, 0); 1372 bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); 1373 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 1374 sgl->word2 = cpu_to_le32(sgl->word2); 1375 sgl->sge_len = cpu_to_le32(dma_len); 1376 1377 dma_offset += dma_len; 1378 data_sg = sg_next(data_sg); 1379 sgl++; 1380 } 1381 if (phba->cfg_enable_pbde) { 1382 /* Use PBDE support for first SGL only, offset == 0 */ 1383 /* Words 13-15 */ 1384 bde = (struct ulp_bde64 *) 1385 &wqe->words[13]; 1386 bde->addrLow = first_data_sgl->addr_lo; 1387 bde->addrHigh = first_data_sgl->addr_hi; 1388 bde->tus.f.bdeSize = 1389 le32_to_cpu(first_data_sgl->sge_len); 1390 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 1391 bde->tus.w = cpu_to_le32(bde->tus.w); 1392 /* wqe_pbde is 1 in template */ 1393 } else { 1394 memset(&wqe->words[13], 0, (sizeof(uint32_t) * 3)); 1395 bf_set(wqe_pbde, &wqe->generic.wqe_com, 0); 1396 } 1397 1398 } else { 1399 /* For this clause to be valid, the payload_length 1400 * and sg_cnt must zero. 1401 */ 1402 if (nCmd->payload_length != 0) { 1403 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1404 "6063 NVME DMA Prep Err: sg_cnt %d " 1405 "payload_length x%x\n", 1406 nCmd->sg_cnt, nCmd->payload_length); 1407 return 1; 1408 } 1409 } 1410 return 0; 1411 } 1412 1413 /** 1414 * lpfc_nvme_fcp_io_submit - Issue an NVME-over-FCP IO 1415 * @lpfc_pnvme: Pointer to the driver's nvme instance data 1416 * @lpfc_nvme_lport: Pointer to the driver's local port data 1417 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1418 * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 1419 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1420 * 1421 * Driver registers this routine as it io request handler. This 1422 * routine issues an fcp WQE with data from the @lpfc_nvme_fcpreq 1423 * data structure to the rport 1424 indicated in @lpfc_nvme_rport. 1425 * 1426 * Return value : 1427 * 0 - Success 1428 * TODO: What are the failure codes. 1429 **/ 1430 static int 1431 lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, 1432 struct nvme_fc_remote_port *pnvme_rport, 1433 void *hw_queue_handle, 1434 struct nvmefc_fcp_req *pnvme_fcreq) 1435 { 1436 int ret = 0; 1437 int expedite = 0; 1438 int idx; 1439 struct lpfc_nvme_lport *lport; 1440 struct lpfc_nvme_ctrl_stat *cstat; 1441 struct lpfc_vport *vport; 1442 struct lpfc_hba *phba; 1443 struct lpfc_nodelist *ndlp; 1444 struct lpfc_nvme_buf *lpfc_ncmd; 1445 struct lpfc_nvme_rport *rport; 1446 struct lpfc_nvme_qhandle *lpfc_queue_info; 1447 struct lpfc_nvme_fcpreq_priv *freqpriv; 1448 struct nvme_common_command *sqe; 1449 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1450 uint64_t start = 0; 1451 #endif 1452 1453 /* Validate pointers. LLDD fault handling with transport does 1454 * have timing races. 1455 */ 1456 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1457 if (unlikely(!lport)) { 1458 ret = -EINVAL; 1459 goto out_fail; 1460 } 1461 1462 vport = lport->vport; 1463 1464 if (unlikely(!hw_queue_handle)) { 1465 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1466 "6117 Fail IO, NULL hw_queue_handle\n"); 1467 atomic_inc(&lport->xmt_fcp_err); 1468 ret = -EBUSY; 1469 goto out_fail; 1470 } 1471 1472 phba = vport->phba; 1473 1474 if (vport->load_flag & FC_UNLOADING) { 1475 ret = -ENODEV; 1476 goto out_fail; 1477 } 1478 1479 if (vport->load_flag & FC_UNLOADING) { 1480 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1481 "6124 Fail IO, Driver unload\n"); 1482 atomic_inc(&lport->xmt_fcp_err); 1483 ret = -ENODEV; 1484 goto out_fail; 1485 } 1486 1487 freqpriv = pnvme_fcreq->private; 1488 if (unlikely(!freqpriv)) { 1489 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1490 "6158 Fail IO, NULL request data\n"); 1491 atomic_inc(&lport->xmt_fcp_err); 1492 ret = -EINVAL; 1493 goto out_fail; 1494 } 1495 1496 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1497 if (phba->ktime_on) 1498 start = ktime_get_ns(); 1499 #endif 1500 rport = (struct lpfc_nvme_rport *)pnvme_rport->private; 1501 lpfc_queue_info = (struct lpfc_nvme_qhandle *)hw_queue_handle; 1502 1503 /* 1504 * Catch race where our node has transitioned, but the 1505 * transport is still transitioning. 1506 */ 1507 ndlp = rport->ndlp; 1508 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { 1509 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1510 "6053 Fail IO, ndlp not ready: rport %p " 1511 "ndlp %p, DID x%06x\n", 1512 rport, ndlp, pnvme_rport->port_id); 1513 atomic_inc(&lport->xmt_fcp_err); 1514 ret = -EBUSY; 1515 goto out_fail; 1516 } 1517 1518 /* The remote node has to be a mapped target or it's an error. */ 1519 if ((ndlp->nlp_type & NLP_NVME_TARGET) && 1520 (ndlp->nlp_state != NLP_STE_MAPPED_NODE)) { 1521 lpfc_printf_vlog(vport, KERN_INFO, LOG_NODE | LOG_NVME_IOERR, 1522 "6036 Fail IO, DID x%06x not ready for " 1523 "IO. State x%x, Type x%x Flg x%x\n", 1524 pnvme_rport->port_id, 1525 ndlp->nlp_state, ndlp->nlp_type, 1526 ndlp->upcall_flags); 1527 atomic_inc(&lport->xmt_fcp_bad_ndlp); 1528 ret = -EBUSY; 1529 goto out_fail; 1530 1531 } 1532 1533 /* Currently only NVME Keep alive commands should be expedited 1534 * if the driver runs out of a resource. These should only be 1535 * issued on the admin queue, qidx 0 1536 */ 1537 if (!lpfc_queue_info->qidx && !pnvme_fcreq->sg_cnt) { 1538 sqe = &((struct nvme_fc_cmd_iu *) 1539 pnvme_fcreq->cmdaddr)->sqe.common; 1540 if (sqe->opcode == nvme_admin_keep_alive) 1541 expedite = 1; 1542 } 1543 1544 /* The node is shared with FCP IO, make sure the IO pending count does 1545 * not exceed the programmed depth. 1546 */ 1547 if (lpfc_ndlp_check_qdepth(phba, ndlp)) { 1548 if ((atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) && 1549 !expedite) { 1550 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1551 "6174 Fail IO, ndlp qdepth exceeded: " 1552 "idx %d DID %x pend %d qdepth %d\n", 1553 lpfc_queue_info->index, ndlp->nlp_DID, 1554 atomic_read(&ndlp->cmd_pending), 1555 ndlp->cmd_qdepth); 1556 atomic_inc(&lport->xmt_fcp_qdepth); 1557 ret = -EBUSY; 1558 goto out_fail; 1559 } 1560 } 1561 1562 lpfc_ncmd = lpfc_get_nvme_buf(phba, ndlp, expedite); 1563 if (lpfc_ncmd == NULL) { 1564 atomic_inc(&lport->xmt_fcp_noxri); 1565 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1566 "6065 Fail IO, driver buffer pool is empty: " 1567 "idx %d DID %x\n", 1568 lpfc_queue_info->index, ndlp->nlp_DID); 1569 ret = -EBUSY; 1570 goto out_fail; 1571 } 1572 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1573 if (start) { 1574 lpfc_ncmd->ts_cmd_start = start; 1575 lpfc_ncmd->ts_last_cmd = phba->ktime_last_cmd; 1576 } else { 1577 lpfc_ncmd->ts_cmd_start = 0; 1578 } 1579 #endif 1580 1581 /* 1582 * Store the data needed by the driver to issue, abort, and complete 1583 * an IO. 1584 * Do not let the IO hang out forever. There is no midlayer issuing 1585 * an abort so inform the FW of the maximum IO pending time. 1586 */ 1587 freqpriv->nvme_buf = lpfc_ncmd; 1588 lpfc_ncmd->nvmeCmd = pnvme_fcreq; 1589 lpfc_ncmd->nrport = rport; 1590 lpfc_ncmd->ndlp = ndlp; 1591 lpfc_ncmd->start_time = jiffies; 1592 1593 /* 1594 * Issue the IO on the WQ indicated by index in the hw_queue_handle. 1595 * This identfier was create in our hardware queue create callback 1596 * routine. The driver now is dependent on the IO queue steering from 1597 * the transport. We are trusting the upper NVME layers know which 1598 * index to use and that they have affinitized a CPU to this hardware 1599 * queue. A hardware queue maps to a driver MSI-X vector/EQ/CQ/WQ. 1600 */ 1601 idx = lpfc_queue_info->index; 1602 lpfc_ncmd->cur_iocbq.hba_wqidx = idx; 1603 cstat = &lport->cstat[idx]; 1604 1605 lpfc_nvme_prep_io_cmd(vport, lpfc_ncmd, ndlp, cstat); 1606 ret = lpfc_nvme_prep_io_dma(vport, lpfc_ncmd); 1607 if (ret) { 1608 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1609 "6175 Fail IO, Prep DMA: " 1610 "idx %d DID %x\n", 1611 lpfc_queue_info->index, ndlp->nlp_DID); 1612 atomic_inc(&lport->xmt_fcp_err); 1613 ret = -ENOMEM; 1614 goto out_free_nvme_buf; 1615 } 1616 1617 lpfc_nvmeio_data(phba, "NVME FCP XMIT: xri x%x idx %d to %06x\n", 1618 lpfc_ncmd->cur_iocbq.sli4_xritag, 1619 lpfc_queue_info->index, ndlp->nlp_DID); 1620 1621 ret = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, &lpfc_ncmd->cur_iocbq); 1622 if (ret) { 1623 atomic_inc(&lport->xmt_fcp_wqerr); 1624 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 1625 "6113 Fail IO, Could not issue WQE err %x " 1626 "sid: x%x did: x%x oxid: x%x\n", 1627 ret, vport->fc_myDID, ndlp->nlp_DID, 1628 lpfc_ncmd->cur_iocbq.sli4_xritag); 1629 goto out_free_nvme_buf; 1630 } 1631 1632 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1633 if (lpfc_ncmd->ts_cmd_start) 1634 lpfc_ncmd->ts_cmd_wqput = ktime_get_ns(); 1635 1636 if (phba->cpucheck_on & LPFC_CHECK_NVME_IO) { 1637 lpfc_ncmd->cpu = smp_processor_id(); 1638 if (lpfc_ncmd->cpu != lpfc_queue_info->index) { 1639 /* Check for admin queue */ 1640 if (lpfc_queue_info->qidx) { 1641 lpfc_printf_vlog(vport, 1642 KERN_ERR, LOG_NVME_IOERR, 1643 "6702 CPU Check cmd: " 1644 "cpu %d wq %d\n", 1645 lpfc_ncmd->cpu, 1646 lpfc_queue_info->index); 1647 } 1648 lpfc_ncmd->cpu = lpfc_queue_info->index; 1649 } 1650 if (lpfc_ncmd->cpu < LPFC_CHECK_CPU_CNT) 1651 phba->cpucheck_xmt_io[lpfc_ncmd->cpu]++; 1652 } 1653 #endif 1654 return 0; 1655 1656 out_free_nvme_buf: 1657 if (lpfc_ncmd->nvmeCmd->sg_cnt) { 1658 if (lpfc_ncmd->nvmeCmd->io_dir == NVMEFC_FCP_WRITE) 1659 atomic_dec(&cstat->fc4NvmeOutputRequests); 1660 else 1661 atomic_dec(&cstat->fc4NvmeInputRequests); 1662 } else 1663 atomic_dec(&cstat->fc4NvmeControlRequests); 1664 lpfc_release_nvme_buf(phba, lpfc_ncmd); 1665 out_fail: 1666 return ret; 1667 } 1668 1669 /** 1670 * lpfc_nvme_abort_fcreq_cmpl - Complete an NVME FCP abort request. 1671 * @phba: Pointer to HBA context object 1672 * @cmdiocb: Pointer to command iocb object. 1673 * @rspiocb: Pointer to response iocb object. 1674 * 1675 * This is the callback function for any NVME FCP IO that was aborted. 1676 * 1677 * Return value: 1678 * None 1679 **/ 1680 void 1681 lpfc_nvme_abort_fcreq_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, 1682 struct lpfc_wcqe_complete *abts_cmpl) 1683 { 1684 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1685 "6145 ABORT_XRI_CN completing on rpi x%x " 1686 "original iotag x%x, abort cmd iotag x%x " 1687 "req_tag x%x, status x%x, hwstatus x%x\n", 1688 cmdiocb->iocb.un.acxri.abortContextTag, 1689 cmdiocb->iocb.un.acxri.abortIoTag, 1690 cmdiocb->iotag, 1691 bf_get(lpfc_wcqe_c_request_tag, abts_cmpl), 1692 bf_get(lpfc_wcqe_c_status, abts_cmpl), 1693 bf_get(lpfc_wcqe_c_hw_status, abts_cmpl)); 1694 lpfc_sli_release_iocbq(phba, cmdiocb); 1695 } 1696 1697 /** 1698 * lpfc_nvme_fcp_abort - Issue an NVME-over-FCP ABTS 1699 * @lpfc_pnvme: Pointer to the driver's nvme instance data 1700 * @lpfc_nvme_lport: Pointer to the driver's local port data 1701 * @lpfc_nvme_rport: Pointer to the rport getting the @lpfc_nvme_ereq 1702 * @lpfc_nvme_fcreq: IO request from nvme fc to driver. 1703 * @hw_queue_handle: Driver-returned handle in lpfc_nvme_create_queue 1704 * 1705 * Driver registers this routine as its nvme request io abort handler. This 1706 * routine issues an fcp Abort WQE with data from the @lpfc_nvme_fcpreq 1707 * data structure to the rport indicated in @lpfc_nvme_rport. This routine 1708 * is executed asynchronously - one the target is validated as "MAPPED" and 1709 * ready for IO, the driver issues the abort request and returns. 1710 * 1711 * Return value: 1712 * None 1713 **/ 1714 static void 1715 lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, 1716 struct nvme_fc_remote_port *pnvme_rport, 1717 void *hw_queue_handle, 1718 struct nvmefc_fcp_req *pnvme_fcreq) 1719 { 1720 struct lpfc_nvme_lport *lport; 1721 struct lpfc_vport *vport; 1722 struct lpfc_hba *phba; 1723 struct lpfc_nvme_buf *lpfc_nbuf; 1724 struct lpfc_iocbq *abts_buf; 1725 struct lpfc_iocbq *nvmereq_wqe; 1726 struct lpfc_nvme_fcpreq_priv *freqpriv; 1727 union lpfc_wqe128 *abts_wqe; 1728 unsigned long flags; 1729 int ret_val; 1730 1731 /* Validate pointers. LLDD fault handling with transport does 1732 * have timing races. 1733 */ 1734 lport = (struct lpfc_nvme_lport *)pnvme_lport->private; 1735 if (unlikely(!lport)) 1736 return; 1737 1738 vport = lport->vport; 1739 1740 if (unlikely(!hw_queue_handle)) { 1741 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1742 "6129 Fail Abort, HW Queue Handle NULL.\n"); 1743 return; 1744 } 1745 1746 phba = vport->phba; 1747 freqpriv = pnvme_fcreq->private; 1748 1749 if (unlikely(!freqpriv)) 1750 return; 1751 if (vport->load_flag & FC_UNLOADING) 1752 return; 1753 1754 /* Announce entry to new IO submit field. */ 1755 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1756 "6002 Abort Request to rport DID x%06x " 1757 "for nvme_fc_req %p\n", 1758 pnvme_rport->port_id, 1759 pnvme_fcreq); 1760 1761 /* If the hba is getting reset, this flag is set. It is 1762 * cleared when the reset is complete and rings reestablished. 1763 */ 1764 spin_lock_irqsave(&phba->hbalock, flags); 1765 /* driver queued commands are in process of being flushed */ 1766 if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) { 1767 spin_unlock_irqrestore(&phba->hbalock, flags); 1768 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1769 "6139 Driver in reset cleanup - flushing " 1770 "NVME Req now. hba_flag x%x\n", 1771 phba->hba_flag); 1772 return; 1773 } 1774 1775 lpfc_nbuf = freqpriv->nvme_buf; 1776 if (!lpfc_nbuf) { 1777 spin_unlock_irqrestore(&phba->hbalock, flags); 1778 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1779 "6140 NVME IO req has no matching lpfc nvme " 1780 "io buffer. Skipping abort req.\n"); 1781 return; 1782 } else if (!lpfc_nbuf->nvmeCmd) { 1783 spin_unlock_irqrestore(&phba->hbalock, flags); 1784 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1785 "6141 lpfc NVME IO req has no nvme_fcreq " 1786 "io buffer. Skipping abort req.\n"); 1787 return; 1788 } 1789 nvmereq_wqe = &lpfc_nbuf->cur_iocbq; 1790 1791 /* 1792 * The lpfc_nbuf and the mapped nvme_fcreq in the driver's 1793 * state must match the nvme_fcreq passed by the nvme 1794 * transport. If they don't match, it is likely the driver 1795 * has already completed the NVME IO and the nvme transport 1796 * has not seen it yet. 1797 */ 1798 if (lpfc_nbuf->nvmeCmd != pnvme_fcreq) { 1799 spin_unlock_irqrestore(&phba->hbalock, flags); 1800 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1801 "6143 NVME req mismatch: " 1802 "lpfc_nbuf %p nvmeCmd %p, " 1803 "pnvme_fcreq %p. Skipping Abort xri x%x\n", 1804 lpfc_nbuf, lpfc_nbuf->nvmeCmd, 1805 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1806 return; 1807 } 1808 1809 /* Don't abort IOs no longer on the pending queue. */ 1810 if (!(nvmereq_wqe->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { 1811 spin_unlock_irqrestore(&phba->hbalock, flags); 1812 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1813 "6142 NVME IO req %p not queued - skipping " 1814 "abort req xri x%x\n", 1815 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1816 return; 1817 } 1818 1819 atomic_inc(&lport->xmt_fcp_abort); 1820 lpfc_nvmeio_data(phba, "NVME FCP ABORT: xri x%x idx %d to %06x\n", 1821 nvmereq_wqe->sli4_xritag, 1822 nvmereq_wqe->hba_wqidx, pnvme_rport->port_id); 1823 1824 /* Outstanding abort is in progress */ 1825 if (nvmereq_wqe->iocb_flag & LPFC_DRIVER_ABORTED) { 1826 spin_unlock_irqrestore(&phba->hbalock, flags); 1827 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1828 "6144 Outstanding NVME I/O Abort Request " 1829 "still pending on nvme_fcreq %p, " 1830 "lpfc_ncmd %p xri x%x\n", 1831 pnvme_fcreq, lpfc_nbuf, 1832 nvmereq_wqe->sli4_xritag); 1833 return; 1834 } 1835 1836 abts_buf = __lpfc_sli_get_iocbq(phba); 1837 if (!abts_buf) { 1838 spin_unlock_irqrestore(&phba->hbalock, flags); 1839 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1840 "6136 No available abort wqes. Skipping " 1841 "Abts req for nvme_fcreq %p xri x%x\n", 1842 pnvme_fcreq, nvmereq_wqe->sli4_xritag); 1843 return; 1844 } 1845 1846 /* Ready - mark outstanding as aborted by driver. */ 1847 nvmereq_wqe->iocb_flag |= LPFC_DRIVER_ABORTED; 1848 1849 /* Complete prepping the abort wqe and issue to the FW. */ 1850 abts_wqe = &abts_buf->wqe; 1851 1852 /* WQEs are reused. Clear stale data and set key fields to 1853 * zero like ia, iaab, iaar, xri_tag, and ctxt_tag. 1854 */ 1855 memset(abts_wqe, 0, sizeof(union lpfc_wqe)); 1856 bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG); 1857 1858 /* word 7 */ 1859 bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX); 1860 bf_set(wqe_class, &abts_wqe->abort_cmd.wqe_com, 1861 nvmereq_wqe->iocb.ulpClass); 1862 1863 /* word 8 - tell the FW to abort the IO associated with this 1864 * outstanding exchange ID. 1865 */ 1866 abts_wqe->abort_cmd.wqe_com.abort_tag = nvmereq_wqe->sli4_xritag; 1867 1868 /* word 9 - this is the iotag for the abts_wqe completion. */ 1869 bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com, 1870 abts_buf->iotag); 1871 1872 /* word 10 */ 1873 bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1); 1874 bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE); 1875 1876 /* word 11 */ 1877 bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND); 1878 bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1); 1879 bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 1880 1881 /* ABTS WQE must go to the same WQ as the WQE to be aborted */ 1882 abts_buf->iocb_flag |= LPFC_IO_NVME; 1883 abts_buf->hba_wqidx = nvmereq_wqe->hba_wqidx; 1884 abts_buf->vport = vport; 1885 abts_buf->wqe_cmpl = lpfc_nvme_abort_fcreq_cmpl; 1886 ret_val = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_buf); 1887 spin_unlock_irqrestore(&phba->hbalock, flags); 1888 if (ret_val) { 1889 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_ABTS, 1890 "6137 Failed abts issue_wqe with status x%x " 1891 "for nvme_fcreq %p.\n", 1892 ret_val, pnvme_fcreq); 1893 lpfc_sli_release_iocbq(phba, abts_buf); 1894 return; 1895 } 1896 1897 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_ABTS, 1898 "6138 Transport Abort NVME Request Issued for " 1899 "ox_id x%x on reqtag x%x\n", 1900 nvmereq_wqe->sli4_xritag, 1901 abts_buf->iotag); 1902 } 1903 1904 /* Declare and initialization an instance of the FC NVME template. */ 1905 static struct nvme_fc_port_template lpfc_nvme_template = { 1906 /* initiator-based functions */ 1907 .localport_delete = lpfc_nvme_localport_delete, 1908 .remoteport_delete = lpfc_nvme_remoteport_delete, 1909 .create_queue = lpfc_nvme_create_queue, 1910 .delete_queue = lpfc_nvme_delete_queue, 1911 .ls_req = lpfc_nvme_ls_req, 1912 .fcp_io = lpfc_nvme_fcp_io_submit, 1913 .ls_abort = lpfc_nvme_ls_abort, 1914 .fcp_abort = lpfc_nvme_fcp_abort, 1915 1916 .max_hw_queues = 1, 1917 .max_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 1918 .max_dif_sgl_segments = LPFC_NVME_DEFAULT_SEGS, 1919 .dma_boundary = 0xFFFFFFFF, 1920 1921 /* Sizes of additional private data for data structures. 1922 * No use for the last two sizes at this time. 1923 */ 1924 .local_priv_sz = sizeof(struct lpfc_nvme_lport), 1925 .remote_priv_sz = sizeof(struct lpfc_nvme_rport), 1926 .lsrqst_priv_sz = 0, 1927 .fcprqst_priv_sz = sizeof(struct lpfc_nvme_fcpreq_priv), 1928 }; 1929 1930 /** 1931 * lpfc_sli4_post_nvme_sgl_block - post a block of nvme sgl list to firmware 1932 * @phba: pointer to lpfc hba data structure. 1933 * @nblist: pointer to nvme buffer list. 1934 * @count: number of scsi buffers on the list. 1935 * 1936 * This routine is invoked to post a block of @count scsi sgl pages from a 1937 * SCSI buffer list @nblist to the HBA using non-embedded mailbox command. 1938 * No Lock is held. 1939 * 1940 **/ 1941 static int 1942 lpfc_sli4_post_nvme_sgl_block(struct lpfc_hba *phba, 1943 struct list_head *nblist, 1944 int count) 1945 { 1946 struct lpfc_nvme_buf *lpfc_ncmd; 1947 struct lpfc_mbx_post_uembed_sgl_page1 *sgl; 1948 struct sgl_page_pairs *sgl_pg_pairs; 1949 void *viraddr; 1950 LPFC_MBOXQ_t *mbox; 1951 uint32_t reqlen, alloclen, pg_pairs; 1952 uint32_t mbox_tmo; 1953 uint16_t xritag_start = 0; 1954 int rc = 0; 1955 uint32_t shdr_status, shdr_add_status; 1956 dma_addr_t pdma_phys_bpl1; 1957 union lpfc_sli4_cfg_shdr *shdr; 1958 1959 /* Calculate the requested length of the dma memory */ 1960 reqlen = count * sizeof(struct sgl_page_pairs) + 1961 sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t); 1962 if (reqlen > SLI4_PAGE_SIZE) { 1963 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, 1964 "6118 Block sgl registration required DMA " 1965 "size (%d) great than a page\n", reqlen); 1966 return -ENOMEM; 1967 } 1968 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); 1969 if (!mbox) { 1970 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 1971 "6119 Failed to allocate mbox cmd memory\n"); 1972 return -ENOMEM; 1973 } 1974 1975 /* Allocate DMA memory and set up the non-embedded mailbox command */ 1976 alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE, 1977 LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen, 1978 LPFC_SLI4_MBX_NEMBED); 1979 1980 if (alloclen < reqlen) { 1981 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 1982 "6120 Allocated DMA memory size (%d) is " 1983 "less than the requested DMA memory " 1984 "size (%d)\n", alloclen, reqlen); 1985 lpfc_sli4_mbox_cmd_free(phba, mbox); 1986 return -ENOMEM; 1987 } 1988 1989 /* Get the first SGE entry from the non-embedded DMA memory */ 1990 viraddr = mbox->sge_array->addr[0]; 1991 1992 /* Set up the SGL pages in the non-embedded DMA pages */ 1993 sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr; 1994 sgl_pg_pairs = &sgl->sgl_pg_pairs; 1995 1996 pg_pairs = 0; 1997 list_for_each_entry(lpfc_ncmd, nblist, list) { 1998 /* Set up the sge entry */ 1999 sgl_pg_pairs->sgl_pg0_addr_lo = 2000 cpu_to_le32(putPaddrLow(lpfc_ncmd->dma_phys_sgl)); 2001 sgl_pg_pairs->sgl_pg0_addr_hi = 2002 cpu_to_le32(putPaddrHigh(lpfc_ncmd->dma_phys_sgl)); 2003 if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE) 2004 pdma_phys_bpl1 = lpfc_ncmd->dma_phys_sgl + 2005 SGL_PAGE_SIZE; 2006 else 2007 pdma_phys_bpl1 = 0; 2008 sgl_pg_pairs->sgl_pg1_addr_lo = 2009 cpu_to_le32(putPaddrLow(pdma_phys_bpl1)); 2010 sgl_pg_pairs->sgl_pg1_addr_hi = 2011 cpu_to_le32(putPaddrHigh(pdma_phys_bpl1)); 2012 /* Keep the first xritag on the list */ 2013 if (pg_pairs == 0) 2014 xritag_start = lpfc_ncmd->cur_iocbq.sli4_xritag; 2015 sgl_pg_pairs++; 2016 pg_pairs++; 2017 } 2018 bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start); 2019 bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs); 2020 /* Perform endian conversion if necessary */ 2021 sgl->word0 = cpu_to_le32(sgl->word0); 2022 2023 if (!phba->sli4_hba.intr_enable) 2024 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL); 2025 else { 2026 mbox_tmo = lpfc_mbox_tmo_val(phba, mbox); 2027 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo); 2028 } 2029 shdr = (union lpfc_sli4_cfg_shdr *)&sgl->cfg_shdr; 2030 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response); 2031 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response); 2032 if (rc != MBX_TIMEOUT) 2033 lpfc_sli4_mbox_cmd_free(phba, mbox); 2034 if (shdr_status || shdr_add_status || rc) { 2035 lpfc_printf_log(phba, KERN_ERR, LOG_SLI, 2036 "6125 POST_SGL_BLOCK mailbox command failed " 2037 "status x%x add_status x%x mbx status x%x\n", 2038 shdr_status, shdr_add_status, rc); 2039 rc = -ENXIO; 2040 } 2041 return rc; 2042 } 2043 2044 /** 2045 * lpfc_post_nvme_sgl_list - Post blocks of nvme buffer sgls from a list 2046 * @phba: pointer to lpfc hba data structure. 2047 * @post_nblist: pointer to the nvme buffer list. 2048 * 2049 * This routine walks a list of nvme buffers that was passed in. It attempts 2050 * to construct blocks of nvme buffer sgls which contains contiguous xris and 2051 * uses the non-embedded SGL block post mailbox commands to post to the port. 2052 * For single NVME buffer sgl with non-contiguous xri, if any, it shall use 2053 * embedded SGL post mailbox command for posting. The @post_nblist passed in 2054 * must be local list, thus no lock is needed when manipulate the list. 2055 * 2056 * Returns: 0 = failure, non-zero number of successfully posted buffers. 2057 **/ 2058 static int 2059 lpfc_post_nvme_sgl_list(struct lpfc_hba *phba, 2060 struct list_head *post_nblist, int sb_count) 2061 { 2062 struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; 2063 int status, sgl_size; 2064 int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0; 2065 dma_addr_t pdma_phys_sgl1; 2066 int last_xritag = NO_XRI; 2067 int cur_xritag; 2068 LIST_HEAD(prep_nblist); 2069 LIST_HEAD(blck_nblist); 2070 LIST_HEAD(nvme_nblist); 2071 2072 /* sanity check */ 2073 if (sb_count <= 0) 2074 return -EINVAL; 2075 2076 sgl_size = phba->cfg_sg_dma_buf_size; 2077 2078 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, post_nblist, list) { 2079 list_del_init(&lpfc_ncmd->list); 2080 block_cnt++; 2081 if ((last_xritag != NO_XRI) && 2082 (lpfc_ncmd->cur_iocbq.sli4_xritag != last_xritag + 1)) { 2083 /* a hole in xri block, form a sgl posting block */ 2084 list_splice_init(&prep_nblist, &blck_nblist); 2085 post_cnt = block_cnt - 1; 2086 /* prepare list for next posting block */ 2087 list_add_tail(&lpfc_ncmd->list, &prep_nblist); 2088 block_cnt = 1; 2089 } else { 2090 /* prepare list for next posting block */ 2091 list_add_tail(&lpfc_ncmd->list, &prep_nblist); 2092 /* enough sgls for non-embed sgl mbox command */ 2093 if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) { 2094 list_splice_init(&prep_nblist, &blck_nblist); 2095 post_cnt = block_cnt; 2096 block_cnt = 0; 2097 } 2098 } 2099 num_posting++; 2100 last_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag; 2101 2102 /* end of repost sgl list condition for NVME buffers */ 2103 if (num_posting == sb_count) { 2104 if (post_cnt == 0) { 2105 /* last sgl posting block */ 2106 list_splice_init(&prep_nblist, &blck_nblist); 2107 post_cnt = block_cnt; 2108 } else if (block_cnt == 1) { 2109 /* last single sgl with non-contiguous xri */ 2110 if (sgl_size > SGL_PAGE_SIZE) 2111 pdma_phys_sgl1 = 2112 lpfc_ncmd->dma_phys_sgl + 2113 SGL_PAGE_SIZE; 2114 else 2115 pdma_phys_sgl1 = 0; 2116 cur_xritag = lpfc_ncmd->cur_iocbq.sli4_xritag; 2117 status = lpfc_sli4_post_sgl(phba, 2118 lpfc_ncmd->dma_phys_sgl, 2119 pdma_phys_sgl1, cur_xritag); 2120 if (status) { 2121 /* failure, put on abort nvme list */ 2122 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 2123 } else { 2124 /* success, put on NVME buffer list */ 2125 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 2126 lpfc_ncmd->status = IOSTAT_SUCCESS; 2127 num_posted++; 2128 } 2129 /* success, put on NVME buffer sgl list */ 2130 list_add_tail(&lpfc_ncmd->list, &nvme_nblist); 2131 } 2132 } 2133 2134 /* continue until a nembed page worth of sgls */ 2135 if (post_cnt == 0) 2136 continue; 2137 2138 /* post block of NVME buffer list sgls */ 2139 status = lpfc_sli4_post_nvme_sgl_block(phba, &blck_nblist, 2140 post_cnt); 2141 2142 /* don't reset xirtag due to hole in xri block */ 2143 if (block_cnt == 0) 2144 last_xritag = NO_XRI; 2145 2146 /* reset NVME buffer post count for next round of posting */ 2147 post_cnt = 0; 2148 2149 /* put posted NVME buffer-sgl posted on NVME buffer sgl list */ 2150 while (!list_empty(&blck_nblist)) { 2151 list_remove_head(&blck_nblist, lpfc_ncmd, 2152 struct lpfc_nvme_buf, list); 2153 if (status) { 2154 /* failure, put on abort nvme list */ 2155 lpfc_ncmd->flags |= LPFC_SBUF_XBUSY; 2156 } else { 2157 /* success, put on NVME buffer list */ 2158 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 2159 lpfc_ncmd->status = IOSTAT_SUCCESS; 2160 num_posted++; 2161 } 2162 list_add_tail(&lpfc_ncmd->list, &nvme_nblist); 2163 } 2164 } 2165 /* Push NVME buffers with sgl posted to the available list */ 2166 while (!list_empty(&nvme_nblist)) { 2167 list_remove_head(&nvme_nblist, lpfc_ncmd, 2168 struct lpfc_nvme_buf, list); 2169 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2170 } 2171 return num_posted; 2172 } 2173 2174 /** 2175 * lpfc_repost_nvme_sgl_list - Repost all the allocated nvme buffer sgls 2176 * @phba: pointer to lpfc hba data structure. 2177 * 2178 * This routine walks the list of nvme buffers that have been allocated and 2179 * repost them to the port by using SGL block post. This is needed after a 2180 * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine 2181 * is responsible for moving all nvme buffers on the lpfc_abts_nvme_sgl_list 2182 * to the lpfc_nvme_buf_list. If the repost fails, reject all nvme buffers. 2183 * 2184 * Returns: 0 = success, non-zero failure. 2185 **/ 2186 int 2187 lpfc_repost_nvme_sgl_list(struct lpfc_hba *phba) 2188 { 2189 LIST_HEAD(post_nblist); 2190 int num_posted, rc = 0; 2191 2192 /* get all NVME buffers need to repost to a local list */ 2193 spin_lock_irq(&phba->nvme_buf_list_get_lock); 2194 spin_lock(&phba->nvme_buf_list_put_lock); 2195 list_splice_init(&phba->lpfc_nvme_buf_list_get, &post_nblist); 2196 list_splice(&phba->lpfc_nvme_buf_list_put, &post_nblist); 2197 phba->get_nvme_bufs = 0; 2198 phba->put_nvme_bufs = 0; 2199 spin_unlock(&phba->nvme_buf_list_put_lock); 2200 spin_unlock_irq(&phba->nvme_buf_list_get_lock); 2201 2202 /* post the list of nvme buffer sgls to port if available */ 2203 if (!list_empty(&post_nblist)) { 2204 num_posted = lpfc_post_nvme_sgl_list(phba, &post_nblist, 2205 phba->sli4_hba.nvme_xri_cnt); 2206 /* failed to post any nvme buffer, return error */ 2207 if (num_posted == 0) 2208 rc = -EIO; 2209 } 2210 return rc; 2211 } 2212 2213 /** 2214 * lpfc_new_nvme_buf - Scsi buffer allocator for HBA with SLI4 IF spec 2215 * @vport: The virtual port for which this call being executed. 2216 * @num_to_allocate: The requested number of buffers to allocate. 2217 * 2218 * This routine allocates nvme buffers for device with SLI-4 interface spec, 2219 * the nvme buffer contains all the necessary information needed to initiate 2220 * a NVME I/O. After allocating up to @num_to_allocate NVME buffers and put 2221 * them on a list, it post them to the port by using SGL block post. 2222 * 2223 * Return codes: 2224 * int - number of nvme buffers that were allocated and posted. 2225 * 0 = failure, less than num_to_alloc is a partial failure. 2226 **/ 2227 static int 2228 lpfc_new_nvme_buf(struct lpfc_vport *vport, int num_to_alloc) 2229 { 2230 struct lpfc_hba *phba = vport->phba; 2231 struct lpfc_nvme_buf *lpfc_ncmd; 2232 struct lpfc_iocbq *pwqeq; 2233 union lpfc_wqe128 *wqe; 2234 struct sli4_sge *sgl; 2235 dma_addr_t pdma_phys_sgl; 2236 uint16_t iotag, lxri = 0; 2237 int bcnt, num_posted; 2238 LIST_HEAD(prep_nblist); 2239 LIST_HEAD(post_nblist); 2240 LIST_HEAD(nvme_nblist); 2241 2242 for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { 2243 lpfc_ncmd = kzalloc(sizeof(struct lpfc_nvme_buf), GFP_KERNEL); 2244 if (!lpfc_ncmd) 2245 break; 2246 /* 2247 * Get memory from the pci pool to map the virt space to 2248 * pci bus space for an I/O. The DMA buffer includes the 2249 * number of SGE's necessary to support the sg_tablesize. 2250 */ 2251 lpfc_ncmd->data = dma_pool_zalloc(phba->lpfc_sg_dma_buf_pool, 2252 GFP_KERNEL, 2253 &lpfc_ncmd->dma_handle); 2254 if (!lpfc_ncmd->data) { 2255 kfree(lpfc_ncmd); 2256 break; 2257 } 2258 2259 lxri = lpfc_sli4_next_xritag(phba); 2260 if (lxri == NO_XRI) { 2261 dma_pool_free(phba->lpfc_sg_dma_buf_pool, 2262 lpfc_ncmd->data, lpfc_ncmd->dma_handle); 2263 kfree(lpfc_ncmd); 2264 break; 2265 } 2266 pwqeq = &(lpfc_ncmd->cur_iocbq); 2267 wqe = &pwqeq->wqe; 2268 2269 /* Allocate iotag for lpfc_ncmd->cur_iocbq. */ 2270 iotag = lpfc_sli_next_iotag(phba, pwqeq); 2271 if (iotag == 0) { 2272 dma_pool_free(phba->lpfc_sg_dma_buf_pool, 2273 lpfc_ncmd->data, lpfc_ncmd->dma_handle); 2274 kfree(lpfc_ncmd); 2275 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2276 "6121 Failed to allocated IOTAG for" 2277 " XRI:0x%x\n", lxri); 2278 lpfc_sli4_free_xri(phba, lxri); 2279 break; 2280 } 2281 pwqeq->sli4_lxritag = lxri; 2282 pwqeq->sli4_xritag = phba->sli4_hba.xri_ids[lxri]; 2283 pwqeq->iocb_flag |= LPFC_IO_NVME; 2284 pwqeq->context1 = lpfc_ncmd; 2285 pwqeq->wqe_cmpl = lpfc_nvme_io_cmd_wqe_cmpl; 2286 2287 /* Initialize local short-hand pointers. */ 2288 lpfc_ncmd->nvme_sgl = lpfc_ncmd->data; 2289 sgl = lpfc_ncmd->nvme_sgl; 2290 pdma_phys_sgl = lpfc_ncmd->dma_handle; 2291 lpfc_ncmd->dma_phys_sgl = pdma_phys_sgl; 2292 2293 /* Rsp SGE will be filled in when we rcv an IO 2294 * from the NVME Layer to be sent. 2295 * The cmd is going to be embedded so we need a SKIP SGE. 2296 */ 2297 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2298 bf_set(lpfc_sli4_sge_last, sgl, 0); 2299 sgl->word2 = cpu_to_le32(sgl->word2); 2300 /* Fill in word 3 / sgl_len during cmd submission */ 2301 2302 lpfc_ncmd->cur_iocbq.context1 = lpfc_ncmd; 2303 2304 /* Initialize WQE */ 2305 memset(wqe, 0, sizeof(union lpfc_wqe)); 2306 2307 /* add the nvme buffer to a post list */ 2308 list_add_tail(&lpfc_ncmd->list, &post_nblist); 2309 spin_lock_irq(&phba->nvme_buf_list_get_lock); 2310 phba->sli4_hba.nvme_xri_cnt++; 2311 spin_unlock_irq(&phba->nvme_buf_list_get_lock); 2312 } 2313 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 2314 "6114 Allocate %d out of %d requested new NVME " 2315 "buffers\n", bcnt, num_to_alloc); 2316 2317 /* post the list of nvme buffer sgls to port if available */ 2318 if (!list_empty(&post_nblist)) 2319 num_posted = lpfc_post_nvme_sgl_list(phba, 2320 &post_nblist, bcnt); 2321 else 2322 num_posted = 0; 2323 2324 return num_posted; 2325 } 2326 2327 static inline struct lpfc_nvme_buf * 2328 lpfc_nvme_buf(struct lpfc_hba *phba) 2329 { 2330 struct lpfc_nvme_buf *lpfc_ncmd, *lpfc_ncmd_next; 2331 2332 list_for_each_entry_safe(lpfc_ncmd, lpfc_ncmd_next, 2333 &phba->lpfc_nvme_buf_list_get, list) { 2334 list_del_init(&lpfc_ncmd->list); 2335 phba->get_nvme_bufs--; 2336 return lpfc_ncmd; 2337 } 2338 return NULL; 2339 } 2340 2341 /** 2342 * lpfc_get_nvme_buf - Get a nvme buffer from lpfc_nvme_buf_list of the HBA 2343 * @phba: The HBA for which this call is being executed. 2344 * 2345 * This routine removes a nvme buffer from head of @phba lpfc_nvme_buf_list list 2346 * and returns to caller. 2347 * 2348 * Return codes: 2349 * NULL - Error 2350 * Pointer to lpfc_nvme_buf - Success 2351 **/ 2352 static struct lpfc_nvme_buf * 2353 lpfc_get_nvme_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp, 2354 int expedite) 2355 { 2356 struct lpfc_nvme_buf *lpfc_ncmd = NULL; 2357 unsigned long iflag = 0; 2358 2359 spin_lock_irqsave(&phba->nvme_buf_list_get_lock, iflag); 2360 if (phba->get_nvme_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite) 2361 lpfc_ncmd = lpfc_nvme_buf(phba); 2362 if (!lpfc_ncmd) { 2363 spin_lock(&phba->nvme_buf_list_put_lock); 2364 list_splice(&phba->lpfc_nvme_buf_list_put, 2365 &phba->lpfc_nvme_buf_list_get); 2366 phba->get_nvme_bufs += phba->put_nvme_bufs; 2367 INIT_LIST_HEAD(&phba->lpfc_nvme_buf_list_put); 2368 phba->put_nvme_bufs = 0; 2369 spin_unlock(&phba->nvme_buf_list_put_lock); 2370 if (phba->get_nvme_bufs > LPFC_NVME_EXPEDITE_XRICNT || expedite) 2371 lpfc_ncmd = lpfc_nvme_buf(phba); 2372 } 2373 spin_unlock_irqrestore(&phba->nvme_buf_list_get_lock, iflag); 2374 2375 if (lpfc_ndlp_check_qdepth(phba, ndlp) && lpfc_ncmd) { 2376 atomic_inc(&ndlp->cmd_pending); 2377 lpfc_ncmd->flags |= LPFC_BUMP_QDEPTH; 2378 } 2379 return lpfc_ncmd; 2380 } 2381 2382 /** 2383 * lpfc_release_nvme_buf: Return a nvme buffer back to hba nvme buf list. 2384 * @phba: The Hba for which this call is being executed. 2385 * @lpfc_ncmd: The nvme buffer which is being released. 2386 * 2387 * This routine releases @lpfc_ncmd nvme buffer by adding it to tail of @phba 2388 * lpfc_nvme_buf_list list. For SLI4 XRI's are tied to the nvme buffer 2389 * and cannot be reused for at least RA_TOV amount of time if it was 2390 * aborted. 2391 **/ 2392 static void 2393 lpfc_release_nvme_buf(struct lpfc_hba *phba, struct lpfc_nvme_buf *lpfc_ncmd) 2394 { 2395 unsigned long iflag = 0; 2396 2397 if ((lpfc_ncmd->flags & LPFC_BUMP_QDEPTH) && lpfc_ncmd->ndlp) 2398 atomic_dec(&lpfc_ncmd->ndlp->cmd_pending); 2399 2400 lpfc_ncmd->nonsg_phys = 0; 2401 lpfc_ncmd->ndlp = NULL; 2402 lpfc_ncmd->flags &= ~LPFC_BUMP_QDEPTH; 2403 2404 if (lpfc_ncmd->flags & LPFC_SBUF_XBUSY) { 2405 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2406 "6310 XB release deferred for " 2407 "ox_id x%x on reqtag x%x\n", 2408 lpfc_ncmd->cur_iocbq.sli4_xritag, 2409 lpfc_ncmd->cur_iocbq.iotag); 2410 2411 spin_lock_irqsave(&phba->sli4_hba.abts_nvme_buf_list_lock, 2412 iflag); 2413 list_add_tail(&lpfc_ncmd->list, 2414 &phba->sli4_hba.lpfc_abts_nvme_buf_list); 2415 spin_unlock_irqrestore(&phba->sli4_hba.abts_nvme_buf_list_lock, 2416 iflag); 2417 } else { 2418 lpfc_ncmd->nvmeCmd = NULL; 2419 lpfc_ncmd->cur_iocbq.iocb_flag = LPFC_IO_NVME; 2420 spin_lock_irqsave(&phba->nvme_buf_list_put_lock, iflag); 2421 list_add_tail(&lpfc_ncmd->list, &phba->lpfc_nvme_buf_list_put); 2422 phba->put_nvme_bufs++; 2423 spin_unlock_irqrestore(&phba->nvme_buf_list_put_lock, iflag); 2424 } 2425 } 2426 2427 /** 2428 * lpfc_nvme_create_localport - Create/Bind an nvme localport instance. 2429 * @pvport - the lpfc_vport instance requesting a localport. 2430 * 2431 * This routine is invoked to create an nvme localport instance to bind 2432 * to the nvme_fc_transport. It is called once during driver load 2433 * like lpfc_create_shost after all other services are initialized. 2434 * It requires a vport, vpi, and wwns at call time. Other localport 2435 * parameters are modified as the driver's FCID and the Fabric WWN 2436 * are established. 2437 * 2438 * Return codes 2439 * 0 - successful 2440 * -ENOMEM - no heap memory available 2441 * other values - from nvme registration upcall 2442 **/ 2443 int 2444 lpfc_nvme_create_localport(struct lpfc_vport *vport) 2445 { 2446 int ret = 0; 2447 struct lpfc_hba *phba = vport->phba; 2448 struct nvme_fc_port_info nfcp_info; 2449 struct nvme_fc_local_port *localport; 2450 struct lpfc_nvme_lport *lport; 2451 struct lpfc_nvme_ctrl_stat *cstat; 2452 int len, i; 2453 2454 /* Initialize this localport instance. The vport wwn usage ensures 2455 * that NPIV is accounted for. 2456 */ 2457 memset(&nfcp_info, 0, sizeof(struct nvme_fc_port_info)); 2458 nfcp_info.port_role = FC_PORT_ROLE_NVME_INITIATOR; 2459 nfcp_info.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 2460 nfcp_info.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 2461 2462 /* We need to tell the transport layer + 1 because it takes page 2463 * alignment into account. When space for the SGL is allocated we 2464 * allocate + 3, one for cmd, one for rsp and one for this alignment 2465 */ 2466 lpfc_nvme_template.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 2467 lpfc_nvme_template.max_hw_queues = phba->cfg_nvme_io_channel; 2468 2469 cstat = kmalloc((sizeof(struct lpfc_nvme_ctrl_stat) * 2470 phba->cfg_nvme_io_channel), GFP_KERNEL); 2471 if (!cstat) 2472 return -ENOMEM; 2473 2474 /* localport is allocated from the stack, but the registration 2475 * call allocates heap memory as well as the private area. 2476 */ 2477 #if (IS_ENABLED(CONFIG_NVME_FC)) 2478 ret = nvme_fc_register_localport(&nfcp_info, &lpfc_nvme_template, 2479 &vport->phba->pcidev->dev, &localport); 2480 #else 2481 ret = -ENOMEM; 2482 #endif 2483 if (!ret) { 2484 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME | LOG_NVME_DISC, 2485 "6005 Successfully registered local " 2486 "NVME port num %d, localP %p, private %p, " 2487 "sg_seg %d\n", 2488 localport->port_num, localport, 2489 localport->private, 2490 lpfc_nvme_template.max_sgl_segments); 2491 2492 /* Private is our lport size declared in the template. */ 2493 lport = (struct lpfc_nvme_lport *)localport->private; 2494 vport->localport = localport; 2495 lport->vport = vport; 2496 lport->cstat = cstat; 2497 vport->nvmei_support = 1; 2498 2499 atomic_set(&lport->xmt_fcp_noxri, 0); 2500 atomic_set(&lport->xmt_fcp_bad_ndlp, 0); 2501 atomic_set(&lport->xmt_fcp_qdepth, 0); 2502 atomic_set(&lport->xmt_fcp_err, 0); 2503 atomic_set(&lport->xmt_fcp_wqerr, 0); 2504 atomic_set(&lport->xmt_fcp_abort, 0); 2505 atomic_set(&lport->xmt_ls_abort, 0); 2506 atomic_set(&lport->xmt_ls_err, 0); 2507 atomic_set(&lport->cmpl_fcp_xb, 0); 2508 atomic_set(&lport->cmpl_fcp_err, 0); 2509 atomic_set(&lport->cmpl_ls_xb, 0); 2510 atomic_set(&lport->cmpl_ls_err, 0); 2511 atomic_set(&lport->fc4NvmeLsRequests, 0); 2512 atomic_set(&lport->fc4NvmeLsCmpls, 0); 2513 2514 for (i = 0; i < phba->cfg_nvme_io_channel; i++) { 2515 cstat = &lport->cstat[i]; 2516 atomic_set(&cstat->fc4NvmeInputRequests, 0); 2517 atomic_set(&cstat->fc4NvmeOutputRequests, 0); 2518 atomic_set(&cstat->fc4NvmeControlRequests, 0); 2519 atomic_set(&cstat->fc4NvmeIoCmpls, 0); 2520 } 2521 2522 /* Don't post more new bufs if repost already recovered 2523 * the nvme sgls. 2524 */ 2525 if (phba->sli4_hba.nvme_xri_cnt == 0) { 2526 len = lpfc_new_nvme_buf(vport, 2527 phba->sli4_hba.nvme_xri_max); 2528 vport->phba->total_nvme_bufs += len; 2529 } 2530 } else { 2531 kfree(cstat); 2532 } 2533 2534 return ret; 2535 } 2536 2537 /* lpfc_nvme_lport_unreg_wait - Wait for the host to complete an lport unreg. 2538 * 2539 * The driver has to wait for the host nvme transport to callback 2540 * indicating the localport has successfully unregistered all 2541 * resources. Since this is an uninterruptible wait, loop every ten 2542 * seconds and print a message indicating no progress. 2543 * 2544 * An uninterruptible wait is used because of the risk of transport-to- 2545 * driver state mismatch. 2546 */ 2547 void 2548 lpfc_nvme_lport_unreg_wait(struct lpfc_vport *vport, 2549 struct lpfc_nvme_lport *lport, 2550 struct completion *lport_unreg_cmp) 2551 { 2552 #if (IS_ENABLED(CONFIG_NVME_FC)) 2553 u32 wait_tmo; 2554 int ret; 2555 2556 /* Host transport has to clean up and confirm requiring an indefinite 2557 * wait. Print a message if a 10 second wait expires and renew the 2558 * wait. This is unexpected. 2559 */ 2560 wait_tmo = msecs_to_jiffies(LPFC_NVME_WAIT_TMO * 1000); 2561 while (true) { 2562 ret = wait_for_completion_timeout(lport_unreg_cmp, wait_tmo); 2563 if (unlikely(!ret)) { 2564 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_IOERR, 2565 "6176 Lport %p Localport %p wait " 2566 "timed out. Renewing.\n", 2567 lport, vport->localport); 2568 continue; 2569 } 2570 break; 2571 } 2572 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, 2573 "6177 Lport %p Localport %p Complete Success\n", 2574 lport, vport->localport); 2575 #endif 2576 } 2577 2578 /** 2579 * lpfc_nvme_destroy_localport - Destroy lpfc_nvme bound to nvme transport. 2580 * @pnvme: pointer to lpfc nvme data structure. 2581 * 2582 * This routine is invoked to destroy all lports bound to the phba. 2583 * The lport memory was allocated by the nvme fc transport and is 2584 * released there. This routine ensures all rports bound to the 2585 * lport have been disconnected. 2586 * 2587 **/ 2588 void 2589 lpfc_nvme_destroy_localport(struct lpfc_vport *vport) 2590 { 2591 #if (IS_ENABLED(CONFIG_NVME_FC)) 2592 struct nvme_fc_local_port *localport; 2593 struct lpfc_nvme_lport *lport; 2594 struct lpfc_nvme_ctrl_stat *cstat; 2595 int ret; 2596 DECLARE_COMPLETION_ONSTACK(lport_unreg_cmp); 2597 2598 if (vport->nvmei_support == 0) 2599 return; 2600 2601 localport = vport->localport; 2602 lport = (struct lpfc_nvme_lport *)localport->private; 2603 cstat = lport->cstat; 2604 2605 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2606 "6011 Destroying NVME localport %p\n", 2607 localport); 2608 2609 /* lport's rport list is clear. Unregister 2610 * lport and release resources. 2611 */ 2612 lport->lport_unreg_cmp = &lport_unreg_cmp; 2613 ret = nvme_fc_unregister_localport(localport); 2614 2615 /* Wait for completion. This either blocks 2616 * indefinitely or succeeds 2617 */ 2618 lpfc_nvme_lport_unreg_wait(vport, lport, &lport_unreg_cmp); 2619 vport->localport = NULL; 2620 kfree(cstat); 2621 2622 /* Regardless of the unregister upcall response, clear 2623 * nvmei_support. All rports are unregistered and the 2624 * driver will clean up. 2625 */ 2626 vport->nvmei_support = 0; 2627 if (ret == 0) { 2628 lpfc_printf_vlog(vport, 2629 KERN_INFO, LOG_NVME_DISC, 2630 "6009 Unregistered lport Success\n"); 2631 } else { 2632 lpfc_printf_vlog(vport, 2633 KERN_INFO, LOG_NVME_DISC, 2634 "6010 Unregistered lport " 2635 "Failed, status x%x\n", 2636 ret); 2637 } 2638 #endif 2639 } 2640 2641 void 2642 lpfc_nvme_update_localport(struct lpfc_vport *vport) 2643 { 2644 #if (IS_ENABLED(CONFIG_NVME_FC)) 2645 struct nvme_fc_local_port *localport; 2646 struct lpfc_nvme_lport *lport; 2647 2648 localport = vport->localport; 2649 if (!localport) { 2650 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2651 "6710 Update NVME fail. No localport\n"); 2652 return; 2653 } 2654 lport = (struct lpfc_nvme_lport *)localport->private; 2655 if (!lport) { 2656 lpfc_printf_vlog(vport, KERN_WARNING, LOG_NVME, 2657 "6171 Update NVME fail. localP %p, No lport\n", 2658 localport); 2659 return; 2660 } 2661 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 2662 "6012 Update NVME lport %p did x%x\n", 2663 localport, vport->fc_myDID); 2664 2665 localport->port_id = vport->fc_myDID; 2666 if (localport->port_id == 0) 2667 localport->port_role = FC_PORT_ROLE_NVME_DISCOVERY; 2668 else 2669 localport->port_role = FC_PORT_ROLE_NVME_INITIATOR; 2670 2671 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2672 "6030 bound lport %p to DID x%06x\n", 2673 lport, localport->port_id); 2674 #endif 2675 } 2676 2677 int 2678 lpfc_nvme_register_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2679 { 2680 #if (IS_ENABLED(CONFIG_NVME_FC)) 2681 int ret = 0; 2682 struct nvme_fc_local_port *localport; 2683 struct lpfc_nvme_lport *lport; 2684 struct lpfc_nvme_rport *rport; 2685 struct lpfc_nvme_rport *oldrport; 2686 struct nvme_fc_remote_port *remote_port; 2687 struct nvme_fc_port_info rpinfo; 2688 struct lpfc_nodelist *prev_ndlp = NULL; 2689 2690 lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_NVME_DISC, 2691 "6006 Register NVME PORT. DID x%06x nlptype x%x\n", 2692 ndlp->nlp_DID, ndlp->nlp_type); 2693 2694 localport = vport->localport; 2695 if (!localport) 2696 return 0; 2697 2698 lport = (struct lpfc_nvme_lport *)localport->private; 2699 2700 /* NVME rports are not preserved across devloss. 2701 * Just register this instance. Note, rpinfo->dev_loss_tmo 2702 * is left 0 to indicate accept transport defaults. The 2703 * driver communicates port role capabilities consistent 2704 * with the PRLI response data. 2705 */ 2706 memset(&rpinfo, 0, sizeof(struct nvme_fc_port_info)); 2707 rpinfo.port_id = ndlp->nlp_DID; 2708 if (ndlp->nlp_type & NLP_NVME_TARGET) 2709 rpinfo.port_role |= FC_PORT_ROLE_NVME_TARGET; 2710 if (ndlp->nlp_type & NLP_NVME_INITIATOR) 2711 rpinfo.port_role |= FC_PORT_ROLE_NVME_INITIATOR; 2712 2713 if (ndlp->nlp_type & NLP_NVME_DISCOVERY) 2714 rpinfo.port_role |= FC_PORT_ROLE_NVME_DISCOVERY; 2715 2716 rpinfo.port_name = wwn_to_u64(ndlp->nlp_portname.u.wwn); 2717 rpinfo.node_name = wwn_to_u64(ndlp->nlp_nodename.u.wwn); 2718 2719 spin_lock_irq(&vport->phba->hbalock); 2720 oldrport = lpfc_ndlp_get_nrport(ndlp); 2721 spin_unlock_irq(&vport->phba->hbalock); 2722 if (!oldrport) 2723 lpfc_nlp_get(ndlp); 2724 2725 ret = nvme_fc_register_remoteport(localport, &rpinfo, &remote_port); 2726 if (!ret) { 2727 /* If the ndlp already has an nrport, this is just 2728 * a resume of the existing rport. Else this is a 2729 * new rport. 2730 */ 2731 /* Guard against an unregister/reregister 2732 * race that leaves the WAIT flag set. 2733 */ 2734 spin_lock_irq(&vport->phba->hbalock); 2735 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG; 2736 spin_unlock_irq(&vport->phba->hbalock); 2737 rport = remote_port->private; 2738 if (oldrport) { 2739 /* New remoteport record does not guarantee valid 2740 * host private memory area. 2741 */ 2742 prev_ndlp = oldrport->ndlp; 2743 if (oldrport == remote_port->private) { 2744 /* Same remoteport - ndlp should match. 2745 * Just reuse. 2746 */ 2747 lpfc_printf_vlog(ndlp->vport, KERN_INFO, 2748 LOG_NVME_DISC, 2749 "6014 Rebinding lport to " 2750 "remoteport %p wwpn 0x%llx, " 2751 "Data: x%x x%x %p %p x%x x%06x\n", 2752 remote_port, 2753 remote_port->port_name, 2754 remote_port->port_id, 2755 remote_port->port_role, 2756 prev_ndlp, 2757 ndlp, 2758 ndlp->nlp_type, 2759 ndlp->nlp_DID); 2760 return 0; 2761 } 2762 2763 /* Sever the ndlp<->rport association 2764 * before dropping the ndlp ref from 2765 * register. 2766 */ 2767 spin_lock_irq(&vport->phba->hbalock); 2768 ndlp->nrport = NULL; 2769 ndlp->upcall_flags &= ~NLP_WAIT_FOR_UNREG; 2770 spin_unlock_irq(&vport->phba->hbalock); 2771 rport->ndlp = NULL; 2772 rport->remoteport = NULL; 2773 2774 /* Reference only removed if previous NDLP is no longer 2775 * active. It might be just a swap and removing the 2776 * reference would cause a premature cleanup. 2777 */ 2778 if (prev_ndlp && prev_ndlp != ndlp) { 2779 if ((!NLP_CHK_NODE_ACT(prev_ndlp)) || 2780 (!prev_ndlp->nrport)) 2781 lpfc_nlp_put(prev_ndlp); 2782 } 2783 } 2784 2785 /* Clean bind the rport to the ndlp. */ 2786 rport->remoteport = remote_port; 2787 rport->lport = lport; 2788 rport->ndlp = ndlp; 2789 spin_lock_irq(&vport->phba->hbalock); 2790 ndlp->nrport = rport; 2791 spin_unlock_irq(&vport->phba->hbalock); 2792 lpfc_printf_vlog(vport, KERN_INFO, 2793 LOG_NVME_DISC | LOG_NODE, 2794 "6022 Binding new rport to " 2795 "lport %p Remoteport %p rport %p WWNN 0x%llx, " 2796 "Rport WWPN 0x%llx DID " 2797 "x%06x Role x%x, ndlp %p prev_ndlp %p\n", 2798 lport, remote_port, rport, 2799 rpinfo.node_name, rpinfo.port_name, 2800 rpinfo.port_id, rpinfo.port_role, 2801 ndlp, prev_ndlp); 2802 } else { 2803 lpfc_printf_vlog(vport, KERN_ERR, 2804 LOG_NVME_DISC | LOG_NODE, 2805 "6031 RemotePort Registration failed " 2806 "err: %d, DID x%06x\n", 2807 ret, ndlp->nlp_DID); 2808 } 2809 2810 return ret; 2811 #else 2812 return 0; 2813 #endif 2814 } 2815 2816 /* lpfc_nvme_unregister_port - unbind the DID and port_role from this rport. 2817 * 2818 * There is no notion of Devloss or rport recovery from the current 2819 * nvme_transport perspective. Loss of an rport just means IO cannot 2820 * be sent and recovery is completely up to the initator. 2821 * For now, the driver just unbinds the DID and port_role so that 2822 * no further IO can be issued. Changes are planned for later. 2823 * 2824 * Notes - the ndlp reference count is not decremented here since 2825 * since there is no nvme_transport api for devloss. Node ref count 2826 * is only adjusted in driver unload. 2827 */ 2828 void 2829 lpfc_nvme_unregister_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp) 2830 { 2831 #if (IS_ENABLED(CONFIG_NVME_FC)) 2832 int ret; 2833 struct nvme_fc_local_port *localport; 2834 struct lpfc_nvme_lport *lport; 2835 struct lpfc_nvme_rport *rport; 2836 struct nvme_fc_remote_port *remoteport = NULL; 2837 2838 localport = vport->localport; 2839 2840 /* This is fundamental error. The localport is always 2841 * available until driver unload. Just exit. 2842 */ 2843 if (!localport) 2844 return; 2845 2846 lport = (struct lpfc_nvme_lport *)localport->private; 2847 if (!lport) 2848 goto input_err; 2849 2850 spin_lock_irq(&vport->phba->hbalock); 2851 rport = lpfc_ndlp_get_nrport(ndlp); 2852 if (rport) 2853 remoteport = rport->remoteport; 2854 spin_unlock_irq(&vport->phba->hbalock); 2855 if (!remoteport) 2856 goto input_err; 2857 2858 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_DISC, 2859 "6033 Unreg nvme remoteport %p, portname x%llx, " 2860 "port_id x%06x, portstate x%x port type x%x\n", 2861 remoteport, remoteport->port_name, 2862 remoteport->port_id, remoteport->port_state, 2863 ndlp->nlp_type); 2864 2865 /* Sanity check ndlp type. Only call for NVME ports. Don't 2866 * clear any rport state until the transport calls back. 2867 */ 2868 2869 if (ndlp->nlp_type & NLP_NVME_TARGET) { 2870 /* No concern about the role change on the nvme remoteport. 2871 * The transport will update it. 2872 */ 2873 ndlp->upcall_flags |= NLP_WAIT_FOR_UNREG; 2874 2875 /* Don't let the host nvme transport keep sending keep-alives 2876 * on this remoteport. Vport is unloading, no recovery. The 2877 * return values is ignored. The upcall is a courtesy to the 2878 * transport. 2879 */ 2880 if (vport->load_flag & FC_UNLOADING) 2881 (void)nvme_fc_set_remoteport_devloss(remoteport, 0); 2882 2883 ret = nvme_fc_unregister_remoteport(remoteport); 2884 if (ret != 0) { 2885 lpfc_nlp_put(ndlp); 2886 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 2887 "6167 NVME unregister failed %d " 2888 "port_state x%x\n", 2889 ret, remoteport->port_state); 2890 } 2891 } 2892 return; 2893 2894 input_err: 2895 #endif 2896 lpfc_printf_vlog(vport, KERN_ERR, LOG_NVME_DISC, 2897 "6168 State error: lport %p, rport%p FCID x%06x\n", 2898 vport->localport, ndlp->rport, ndlp->nlp_DID); 2899 } 2900 2901 /** 2902 * lpfc_sli4_nvme_xri_aborted - Fast-path process of NVME xri abort 2903 * @phba: pointer to lpfc hba data structure. 2904 * @axri: pointer to the fcp xri abort wcqe structure. 2905 * 2906 * This routine is invoked by the worker thread to process a SLI4 fast-path 2907 * NVME aborted xri. Aborted NVME IO commands are completed to the transport 2908 * here. 2909 **/ 2910 void 2911 lpfc_sli4_nvme_xri_aborted(struct lpfc_hba *phba, 2912 struct sli4_wcqe_xri_aborted *axri) 2913 { 2914 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 2915 struct lpfc_nvme_buf *lpfc_ncmd, *next_lpfc_ncmd; 2916 struct nvmefc_fcp_req *nvme_cmd = NULL; 2917 struct lpfc_nodelist *ndlp; 2918 unsigned long iflag = 0; 2919 2920 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) 2921 return; 2922 spin_lock_irqsave(&phba->hbalock, iflag); 2923 spin_lock(&phba->sli4_hba.abts_nvme_buf_list_lock); 2924 list_for_each_entry_safe(lpfc_ncmd, next_lpfc_ncmd, 2925 &phba->sli4_hba.lpfc_abts_nvme_buf_list, 2926 list) { 2927 if (lpfc_ncmd->cur_iocbq.sli4_xritag == xri) { 2928 list_del_init(&lpfc_ncmd->list); 2929 lpfc_ncmd->flags &= ~LPFC_SBUF_XBUSY; 2930 lpfc_ncmd->status = IOSTAT_SUCCESS; 2931 spin_unlock( 2932 &phba->sli4_hba.abts_nvme_buf_list_lock); 2933 2934 spin_unlock_irqrestore(&phba->hbalock, iflag); 2935 ndlp = lpfc_ncmd->ndlp; 2936 if (ndlp) 2937 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 2938 2939 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2940 "6311 nvme_cmd %p xri x%x tag x%x " 2941 "abort complete and xri released\n", 2942 lpfc_ncmd->nvmeCmd, xri, 2943 lpfc_ncmd->cur_iocbq.iotag); 2944 2945 /* Aborted NVME commands are required to not complete 2946 * before the abort exchange command fully completes. 2947 * Once completed, it is available via the put list. 2948 */ 2949 if (lpfc_ncmd->nvmeCmd) { 2950 nvme_cmd = lpfc_ncmd->nvmeCmd; 2951 nvme_cmd->done(nvme_cmd); 2952 lpfc_ncmd->nvmeCmd = NULL; 2953 } 2954 lpfc_release_nvme_buf(phba, lpfc_ncmd); 2955 return; 2956 } 2957 } 2958 spin_unlock(&phba->sli4_hba.abts_nvme_buf_list_lock); 2959 spin_unlock_irqrestore(&phba->hbalock, iflag); 2960 2961 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2962 "6312 XRI Aborted xri x%x not found\n", xri); 2963 2964 } 2965 2966 /** 2967 * lpfc_nvme_wait_for_io_drain - Wait for all NVME wqes to complete 2968 * @phba: Pointer to HBA context object. 2969 * 2970 * This function flushes all wqes in the nvme rings and frees all resources 2971 * in the txcmplq. This function does not issue abort wqes for the IO 2972 * commands in txcmplq, they will just be returned with 2973 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI 2974 * slot has been permanently disabled. 2975 **/ 2976 void 2977 lpfc_nvme_wait_for_io_drain(struct lpfc_hba *phba) 2978 { 2979 struct lpfc_sli_ring *pring; 2980 u32 i, wait_cnt = 0; 2981 2982 if (phba->sli_rev < LPFC_SLI_REV4 || !phba->sli4_hba.nvme_wq) 2983 return; 2984 2985 /* Cycle through all NVME rings and make sure all outstanding 2986 * WQEs have been removed from the txcmplqs. 2987 */ 2988 for (i = 0; i < phba->cfg_nvme_io_channel; i++) { 2989 pring = phba->sli4_hba.nvme_wq[i]->pring; 2990 2991 if (!pring) 2992 continue; 2993 2994 /* Retrieve everything on the txcmplq */ 2995 while (!list_empty(&pring->txcmplq)) { 2996 msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1); 2997 wait_cnt++; 2998 2999 /* The sleep is 10mS. Every ten seconds, 3000 * dump a message. Something is wrong. 3001 */ 3002 if ((wait_cnt % 1000) == 0) { 3003 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3004 "6178 NVME IO not empty, " 3005 "cnt %d\n", wait_cnt); 3006 } 3007 } 3008 } 3009 } 3010