1 /******************************************************************* 2 * This file is part of the Emulex Linux Device Driver for * 3 * Fibre Channsel Host Bus Adapters. * 4 * Copyright (C) 2017-2019 Broadcom. All Rights Reserved. The term * 5 * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * 6 * Copyright (C) 2004-2016 Emulex. All rights reserved. * 7 * EMULEX and SLI are trademarks of Emulex. * 8 * www.broadcom.com * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 10 * * 11 * This program is free software; you can redistribute it and/or * 12 * modify it under the terms of version 2 of the GNU General * 13 * Public License as published by the Free Software Foundation. * 14 * This program is distributed in the hope that it will be useful. * 15 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * 16 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 18 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * 19 * TO BE LEGALLY INVALID. See the GNU General Public License for * 20 * more details, a copy of which can be found in the file COPYING * 21 * included with this package. * 22 ********************************************************************/ 23 #include <linux/pci.h> 24 #include <linux/slab.h> 25 #include <linux/interrupt.h> 26 #include <linux/delay.h> 27 #include <asm/unaligned.h> 28 #include <linux/crc-t10dif.h> 29 #include <net/checksum.h> 30 31 #include <scsi/scsi.h> 32 #include <scsi/scsi_device.h> 33 #include <scsi/scsi_eh.h> 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_tcq.h> 36 #include <scsi/scsi_transport_fc.h> 37 #include <scsi/fc/fc_fs.h> 38 39 #include <linux/nvme.h> 40 #include <linux/nvme-fc-driver.h> 41 #include <linux/nvme-fc.h> 42 43 #include "lpfc_version.h" 44 #include "lpfc_hw4.h" 45 #include "lpfc_hw.h" 46 #include "lpfc_sli.h" 47 #include "lpfc_sli4.h" 48 #include "lpfc_nl.h" 49 #include "lpfc_disc.h" 50 #include "lpfc.h" 51 #include "lpfc_scsi.h" 52 #include "lpfc_nvme.h" 53 #include "lpfc_nvmet.h" 54 #include "lpfc_logmsg.h" 55 #include "lpfc_crtn.h" 56 #include "lpfc_vport.h" 57 #include "lpfc_debugfs.h" 58 59 static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *, 60 struct lpfc_nvmet_rcv_ctx *, 61 dma_addr_t rspbuf, 62 uint16_t rspsize); 63 static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *, 64 struct lpfc_nvmet_rcv_ctx *); 65 static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *, 66 struct lpfc_nvmet_rcv_ctx *, 67 uint32_t, uint16_t); 68 static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *, 69 struct lpfc_nvmet_rcv_ctx *, 70 uint32_t, uint16_t); 71 static int lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *, 72 struct lpfc_nvmet_rcv_ctx *, 73 uint32_t, uint16_t); 74 static void lpfc_nvmet_wqfull_flush(struct lpfc_hba *, struct lpfc_queue *, 75 struct lpfc_nvmet_rcv_ctx *); 76 static void lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *); 77 78 static void lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf); 79 80 static union lpfc_wqe128 lpfc_tsend_cmd_template; 81 static union lpfc_wqe128 lpfc_treceive_cmd_template; 82 static union lpfc_wqe128 lpfc_trsp_cmd_template; 83 84 /* Setup WQE templates for NVME IOs */ 85 void 86 lpfc_nvmet_cmd_template(void) 87 { 88 union lpfc_wqe128 *wqe; 89 90 /* TSEND template */ 91 wqe = &lpfc_tsend_cmd_template; 92 memset(wqe, 0, sizeof(union lpfc_wqe128)); 93 94 /* Word 0, 1, 2 - BDE is variable */ 95 96 /* Word 3 - payload_offset_len is zero */ 97 98 /* Word 4 - relative_offset is variable */ 99 100 /* Word 5 - is zero */ 101 102 /* Word 6 - ctxt_tag, xri_tag is variable */ 103 104 /* Word 7 - wqe_ar is variable */ 105 bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE); 106 bf_set(wqe_pu, &wqe->fcp_tsend.wqe_com, PARM_REL_OFF); 107 bf_set(wqe_class, &wqe->fcp_tsend.wqe_com, CLASS3); 108 bf_set(wqe_ct, &wqe->fcp_tsend.wqe_com, SLI4_CT_RPI); 109 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1); 110 111 /* Word 8 - abort_tag is variable */ 112 113 /* Word 9 - reqtag, rcvoxid is variable */ 114 115 /* Word 10 - wqes, xc is variable */ 116 bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1); 117 bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1); 118 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0); 119 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1); 120 bf_set(wqe_iod, &wqe->fcp_tsend.wqe_com, LPFC_WQE_IOD_WRITE); 121 bf_set(wqe_lenloc, &wqe->fcp_tsend.wqe_com, LPFC_WQE_LENLOC_WORD12); 122 123 /* Word 11 - sup, irsp, irsplen is variable */ 124 bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com, FCP_COMMAND_TSEND); 125 bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 126 bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0); 127 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0); 128 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0); 129 bf_set(wqe_pbde, &wqe->fcp_tsend.wqe_com, 0); 130 131 /* Word 12 - fcp_data_len is variable */ 132 133 /* Word 13, 14, 15 - PBDE is zero */ 134 135 /* TRECEIVE template */ 136 wqe = &lpfc_treceive_cmd_template; 137 memset(wqe, 0, sizeof(union lpfc_wqe128)); 138 139 /* Word 0, 1, 2 - BDE is variable */ 140 141 /* Word 3 */ 142 wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN; 143 144 /* Word 4 - relative_offset is variable */ 145 146 /* Word 5 - is zero */ 147 148 /* Word 6 - ctxt_tag, xri_tag is variable */ 149 150 /* Word 7 */ 151 bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com, CMD_FCP_TRECEIVE64_WQE); 152 bf_set(wqe_pu, &wqe->fcp_treceive.wqe_com, PARM_REL_OFF); 153 bf_set(wqe_class, &wqe->fcp_treceive.wqe_com, CLASS3); 154 bf_set(wqe_ct, &wqe->fcp_treceive.wqe_com, SLI4_CT_RPI); 155 bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0); 156 157 /* Word 8 - abort_tag is variable */ 158 159 /* Word 9 - reqtag, rcvoxid is variable */ 160 161 /* Word 10 - xc is variable */ 162 bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1); 163 bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0); 164 bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1); 165 bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ); 166 bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com, LPFC_WQE_LENLOC_WORD12); 167 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1); 168 169 /* Word 11 - pbde is variable */ 170 bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com, FCP_COMMAND_TRECEIVE); 171 bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 172 bf_set(wqe_sup, &wqe->fcp_treceive.wqe_com, 0); 173 bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0); 174 bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0); 175 bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 1); 176 177 /* Word 12 - fcp_data_len is variable */ 178 179 /* Word 13, 14, 15 - PBDE is variable */ 180 181 /* TRSP template */ 182 wqe = &lpfc_trsp_cmd_template; 183 memset(wqe, 0, sizeof(union lpfc_wqe128)); 184 185 /* Word 0, 1, 2 - BDE is variable */ 186 187 /* Word 3 - response_len is variable */ 188 189 /* Word 4, 5 - is zero */ 190 191 /* Word 6 - ctxt_tag, xri_tag is variable */ 192 193 /* Word 7 */ 194 bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE); 195 bf_set(wqe_pu, &wqe->fcp_trsp.wqe_com, PARM_UNUSED); 196 bf_set(wqe_class, &wqe->fcp_trsp.wqe_com, CLASS3); 197 bf_set(wqe_ct, &wqe->fcp_trsp.wqe_com, SLI4_CT_RPI); 198 bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1); /* wqe_ar */ 199 200 /* Word 8 - abort_tag is variable */ 201 202 /* Word 9 - reqtag is variable */ 203 204 /* Word 10 wqes, xc is variable */ 205 bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 1); 206 bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1); 207 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0); 208 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 0); 209 bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_NONE); 210 bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com, LPFC_WQE_LENLOC_WORD3); 211 212 /* Word 11 irsp, irsplen is variable */ 213 bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com, FCP_COMMAND_TRSP); 214 bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); 215 bf_set(wqe_sup, &wqe->fcp_trsp.wqe_com, 0); 216 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0); 217 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0); 218 bf_set(wqe_pbde, &wqe->fcp_trsp.wqe_com, 0); 219 220 /* Word 12, 13, 14, 15 - is zero */ 221 } 222 223 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 224 static struct lpfc_nvmet_rcv_ctx * 225 lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri) 226 { 227 struct lpfc_nvmet_rcv_ctx *ctxp; 228 unsigned long iflag; 229 bool found = false; 230 231 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 232 list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) { 233 if (ctxp->ctxbuf->sglq->sli4_xritag != xri) 234 continue; 235 236 found = true; 237 break; 238 } 239 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 240 if (found) 241 return ctxp; 242 243 return NULL; 244 } 245 246 static struct lpfc_nvmet_rcv_ctx * 247 lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid) 248 { 249 struct lpfc_nvmet_rcv_ctx *ctxp; 250 unsigned long iflag; 251 bool found = false; 252 253 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 254 list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) { 255 if (ctxp->oxid != oxid || ctxp->sid != sid) 256 continue; 257 258 found = true; 259 break; 260 } 261 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 262 if (found) 263 return ctxp; 264 265 return NULL; 266 } 267 #endif 268 269 static void 270 lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp) 271 { 272 lockdep_assert_held(&ctxp->ctxlock); 273 274 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 275 "6313 NVMET Defer ctx release oxid x%x flg x%x\n", 276 ctxp->oxid, ctxp->flag); 277 278 if (ctxp->flag & LPFC_NVMET_CTX_RLS) 279 return; 280 281 ctxp->flag |= LPFC_NVMET_CTX_RLS; 282 spin_lock(&phba->sli4_hba.t_active_list_lock); 283 list_del(&ctxp->list); 284 spin_unlock(&phba->sli4_hba.t_active_list_lock); 285 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 286 list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list); 287 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 288 } 289 290 /** 291 * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response 292 * @phba: Pointer to HBA context object. 293 * @cmdwqe: Pointer to driver command WQE object. 294 * @wcqe: Pointer to driver response CQE object. 295 * 296 * The function is called from SLI ring event handler with no 297 * lock held. This function is the completion handler for NVME LS commands 298 * The function frees memory resources used for the NVME commands. 299 **/ 300 static void 301 lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 302 struct lpfc_wcqe_complete *wcqe) 303 { 304 struct lpfc_nvmet_tgtport *tgtp; 305 struct nvmefc_tgt_ls_req *rsp; 306 struct lpfc_nvmet_rcv_ctx *ctxp; 307 uint32_t status, result; 308 309 status = bf_get(lpfc_wcqe_c_status, wcqe); 310 result = wcqe->parameter; 311 ctxp = cmdwqe->context2; 312 313 if (ctxp->state != LPFC_NVMET_STE_LS_RSP || ctxp->entry_cnt != 2) { 314 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 315 "6410 NVMET LS cmpl state mismatch IO x%x: " 316 "%d %d\n", 317 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 318 } 319 320 if (!phba->targetport) 321 goto out; 322 323 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 324 325 if (tgtp) { 326 if (status) { 327 atomic_inc(&tgtp->xmt_ls_rsp_error); 328 if (result == IOERR_ABORT_REQUESTED) 329 atomic_inc(&tgtp->xmt_ls_rsp_aborted); 330 if (bf_get(lpfc_wcqe_c_xb, wcqe)) 331 atomic_inc(&tgtp->xmt_ls_rsp_xb_set); 332 } else { 333 atomic_inc(&tgtp->xmt_ls_rsp_cmpl); 334 } 335 } 336 337 out: 338 rsp = &ctxp->ctx.ls_req; 339 340 lpfc_nvmeio_data(phba, "NVMET LS CMPL: xri x%x stat x%x result x%x\n", 341 ctxp->oxid, status, result); 342 343 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 344 "6038 NVMET LS rsp cmpl: %d %d oxid x%x\n", 345 status, result, ctxp->oxid); 346 347 lpfc_nlp_put(cmdwqe->context1); 348 cmdwqe->context2 = NULL; 349 cmdwqe->context3 = NULL; 350 lpfc_sli_release_iocbq(phba, cmdwqe); 351 rsp->done(rsp); 352 kfree(ctxp); 353 } 354 355 /** 356 * lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context 357 * @phba: HBA buffer is associated with 358 * @ctxp: context to clean up 359 * @mp: Buffer to free 360 * 361 * Description: Frees the given DMA buffer in the appropriate way given by 362 * reposting it to its associated RQ so it can be reused. 363 * 364 * Notes: Takes phba->hbalock. Can be called with or without other locks held. 365 * 366 * Returns: None 367 **/ 368 void 369 lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf) 370 { 371 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 372 struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context; 373 struct lpfc_nvmet_tgtport *tgtp; 374 struct fc_frame_header *fc_hdr; 375 struct rqb_dmabuf *nvmebuf; 376 struct lpfc_nvmet_ctx_info *infop; 377 uint32_t size, oxid, sid; 378 int cpu; 379 unsigned long iflag; 380 381 if (ctxp->state == LPFC_NVMET_STE_FREE) { 382 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 383 "6411 NVMET free, already free IO x%x: %d %d\n", 384 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 385 } 386 387 if (ctxp->rqb_buffer) { 388 spin_lock_irqsave(&ctxp->ctxlock, iflag); 389 nvmebuf = ctxp->rqb_buffer; 390 /* check if freed in another path whilst acquiring lock */ 391 if (nvmebuf) { 392 ctxp->rqb_buffer = NULL; 393 if (ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) { 394 ctxp->flag &= ~LPFC_NVMET_CTX_REUSE_WQ; 395 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 396 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, 397 nvmebuf); 398 } else { 399 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 400 /* repost */ 401 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 402 } 403 } else { 404 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 405 } 406 } 407 ctxp->state = LPFC_NVMET_STE_FREE; 408 409 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 410 if (phba->sli4_hba.nvmet_io_wait_cnt) { 411 list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list, 412 nvmebuf, struct rqb_dmabuf, 413 hbuf.list); 414 phba->sli4_hba.nvmet_io_wait_cnt--; 415 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 416 iflag); 417 418 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 419 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 420 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 421 size = nvmebuf->bytes_recv; 422 sid = sli4_sid_from_fc_hdr(fc_hdr); 423 424 ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context; 425 ctxp->wqeq = NULL; 426 ctxp->offset = 0; 427 ctxp->phba = phba; 428 ctxp->size = size; 429 ctxp->oxid = oxid; 430 ctxp->sid = sid; 431 ctxp->state = LPFC_NVMET_STE_RCV; 432 ctxp->entry_cnt = 1; 433 ctxp->flag = 0; 434 ctxp->ctxbuf = ctx_buf; 435 ctxp->rqb_buffer = (void *)nvmebuf; 436 spin_lock_init(&ctxp->ctxlock); 437 438 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 439 /* NOTE: isr time stamp is stale when context is re-assigned*/ 440 if (ctxp->ts_isr_cmd) { 441 ctxp->ts_cmd_nvme = 0; 442 ctxp->ts_nvme_data = 0; 443 ctxp->ts_data_wqput = 0; 444 ctxp->ts_isr_data = 0; 445 ctxp->ts_data_nvme = 0; 446 ctxp->ts_nvme_status = 0; 447 ctxp->ts_status_wqput = 0; 448 ctxp->ts_isr_status = 0; 449 ctxp->ts_status_nvme = 0; 450 } 451 #endif 452 atomic_inc(&tgtp->rcv_fcp_cmd_in); 453 454 /* Indicate that a replacement buffer has been posted */ 455 spin_lock_irqsave(&ctxp->ctxlock, iflag); 456 ctxp->flag |= LPFC_NVMET_CTX_REUSE_WQ; 457 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 458 459 if (!queue_work(phba->wq, &ctx_buf->defer_work)) { 460 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 461 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 462 "6181 Unable to queue deferred work " 463 "for oxid x%x. " 464 "FCP Drop IO [x%x x%x x%x]\n", 465 ctxp->oxid, 466 atomic_read(&tgtp->rcv_fcp_cmd_in), 467 atomic_read(&tgtp->rcv_fcp_cmd_out), 468 atomic_read(&tgtp->xmt_fcp_release)); 469 470 spin_lock_irqsave(&ctxp->ctxlock, iflag); 471 lpfc_nvmet_defer_release(phba, ctxp); 472 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 473 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); 474 } 475 return; 476 } 477 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 478 479 /* 480 * Use the CPU context list, from the MRQ the IO was received on 481 * (ctxp->idx), to save context structure. 482 */ 483 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 484 list_del_init(&ctxp->list); 485 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 486 cpu = raw_smp_processor_id(); 487 infop = lpfc_get_ctx_list(phba, cpu, ctxp->idx); 488 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, iflag); 489 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); 490 infop->nvmet_ctx_list_cnt++; 491 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, iflag); 492 #endif 493 } 494 495 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 496 static void 497 lpfc_nvmet_ktime(struct lpfc_hba *phba, 498 struct lpfc_nvmet_rcv_ctx *ctxp) 499 { 500 uint64_t seg1, seg2, seg3, seg4, seg5; 501 uint64_t seg6, seg7, seg8, seg9, seg10; 502 uint64_t segsum; 503 504 if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme || 505 !ctxp->ts_nvme_data || !ctxp->ts_data_wqput || 506 !ctxp->ts_isr_data || !ctxp->ts_data_nvme || 507 !ctxp->ts_nvme_status || !ctxp->ts_status_wqput || 508 !ctxp->ts_isr_status || !ctxp->ts_status_nvme) 509 return; 510 511 if (ctxp->ts_status_nvme < ctxp->ts_isr_cmd) 512 return; 513 if (ctxp->ts_isr_cmd > ctxp->ts_cmd_nvme) 514 return; 515 if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data) 516 return; 517 if (ctxp->ts_nvme_data > ctxp->ts_data_wqput) 518 return; 519 if (ctxp->ts_data_wqput > ctxp->ts_isr_data) 520 return; 521 if (ctxp->ts_isr_data > ctxp->ts_data_nvme) 522 return; 523 if (ctxp->ts_data_nvme > ctxp->ts_nvme_status) 524 return; 525 if (ctxp->ts_nvme_status > ctxp->ts_status_wqput) 526 return; 527 if (ctxp->ts_status_wqput > ctxp->ts_isr_status) 528 return; 529 if (ctxp->ts_isr_status > ctxp->ts_status_nvme) 530 return; 531 /* 532 * Segment 1 - Time from FCP command received by MSI-X ISR 533 * to FCP command is passed to NVME Layer. 534 * Segment 2 - Time from FCP command payload handed 535 * off to NVME Layer to Driver receives a Command op 536 * from NVME Layer. 537 * Segment 3 - Time from Driver receives a Command op 538 * from NVME Layer to Command is put on WQ. 539 * Segment 4 - Time from Driver WQ put is done 540 * to MSI-X ISR for Command cmpl. 541 * Segment 5 - Time from MSI-X ISR for Command cmpl to 542 * Command cmpl is passed to NVME Layer. 543 * Segment 6 - Time from Command cmpl is passed to NVME 544 * Layer to Driver receives a RSP op from NVME Layer. 545 * Segment 7 - Time from Driver receives a RSP op from 546 * NVME Layer to WQ put is done on TRSP FCP Status. 547 * Segment 8 - Time from Driver WQ put is done on TRSP 548 * FCP Status to MSI-X ISR for TRSP cmpl. 549 * Segment 9 - Time from MSI-X ISR for TRSP cmpl to 550 * TRSP cmpl is passed to NVME Layer. 551 * Segment 10 - Time from FCP command received by 552 * MSI-X ISR to command is completed on wire. 553 * (Segments 1 thru 8) for READDATA / WRITEDATA 554 * (Segments 1 thru 4) for READDATA_RSP 555 */ 556 seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd; 557 segsum = seg1; 558 559 seg2 = ctxp->ts_nvme_data - ctxp->ts_isr_cmd; 560 if (segsum > seg2) 561 return; 562 seg2 -= segsum; 563 segsum += seg2; 564 565 seg3 = ctxp->ts_data_wqput - ctxp->ts_isr_cmd; 566 if (segsum > seg3) 567 return; 568 seg3 -= segsum; 569 segsum += seg3; 570 571 seg4 = ctxp->ts_isr_data - ctxp->ts_isr_cmd; 572 if (segsum > seg4) 573 return; 574 seg4 -= segsum; 575 segsum += seg4; 576 577 seg5 = ctxp->ts_data_nvme - ctxp->ts_isr_cmd; 578 if (segsum > seg5) 579 return; 580 seg5 -= segsum; 581 segsum += seg5; 582 583 584 /* For auto rsp commands seg6 thru seg10 will be 0 */ 585 if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) { 586 seg6 = ctxp->ts_nvme_status - ctxp->ts_isr_cmd; 587 if (segsum > seg6) 588 return; 589 seg6 -= segsum; 590 segsum += seg6; 591 592 seg7 = ctxp->ts_status_wqput - ctxp->ts_isr_cmd; 593 if (segsum > seg7) 594 return; 595 seg7 -= segsum; 596 segsum += seg7; 597 598 seg8 = ctxp->ts_isr_status - ctxp->ts_isr_cmd; 599 if (segsum > seg8) 600 return; 601 seg8 -= segsum; 602 segsum += seg8; 603 604 seg9 = ctxp->ts_status_nvme - ctxp->ts_isr_cmd; 605 if (segsum > seg9) 606 return; 607 seg9 -= segsum; 608 segsum += seg9; 609 610 if (ctxp->ts_isr_status < ctxp->ts_isr_cmd) 611 return; 612 seg10 = (ctxp->ts_isr_status - 613 ctxp->ts_isr_cmd); 614 } else { 615 if (ctxp->ts_isr_data < ctxp->ts_isr_cmd) 616 return; 617 seg6 = 0; 618 seg7 = 0; 619 seg8 = 0; 620 seg9 = 0; 621 seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd); 622 } 623 624 phba->ktime_seg1_total += seg1; 625 if (seg1 < phba->ktime_seg1_min) 626 phba->ktime_seg1_min = seg1; 627 else if (seg1 > phba->ktime_seg1_max) 628 phba->ktime_seg1_max = seg1; 629 630 phba->ktime_seg2_total += seg2; 631 if (seg2 < phba->ktime_seg2_min) 632 phba->ktime_seg2_min = seg2; 633 else if (seg2 > phba->ktime_seg2_max) 634 phba->ktime_seg2_max = seg2; 635 636 phba->ktime_seg3_total += seg3; 637 if (seg3 < phba->ktime_seg3_min) 638 phba->ktime_seg3_min = seg3; 639 else if (seg3 > phba->ktime_seg3_max) 640 phba->ktime_seg3_max = seg3; 641 642 phba->ktime_seg4_total += seg4; 643 if (seg4 < phba->ktime_seg4_min) 644 phba->ktime_seg4_min = seg4; 645 else if (seg4 > phba->ktime_seg4_max) 646 phba->ktime_seg4_max = seg4; 647 648 phba->ktime_seg5_total += seg5; 649 if (seg5 < phba->ktime_seg5_min) 650 phba->ktime_seg5_min = seg5; 651 else if (seg5 > phba->ktime_seg5_max) 652 phba->ktime_seg5_max = seg5; 653 654 phba->ktime_data_samples++; 655 if (!seg6) 656 goto out; 657 658 phba->ktime_seg6_total += seg6; 659 if (seg6 < phba->ktime_seg6_min) 660 phba->ktime_seg6_min = seg6; 661 else if (seg6 > phba->ktime_seg6_max) 662 phba->ktime_seg6_max = seg6; 663 664 phba->ktime_seg7_total += seg7; 665 if (seg7 < phba->ktime_seg7_min) 666 phba->ktime_seg7_min = seg7; 667 else if (seg7 > phba->ktime_seg7_max) 668 phba->ktime_seg7_max = seg7; 669 670 phba->ktime_seg8_total += seg8; 671 if (seg8 < phba->ktime_seg8_min) 672 phba->ktime_seg8_min = seg8; 673 else if (seg8 > phba->ktime_seg8_max) 674 phba->ktime_seg8_max = seg8; 675 676 phba->ktime_seg9_total += seg9; 677 if (seg9 < phba->ktime_seg9_min) 678 phba->ktime_seg9_min = seg9; 679 else if (seg9 > phba->ktime_seg9_max) 680 phba->ktime_seg9_max = seg9; 681 out: 682 phba->ktime_seg10_total += seg10; 683 if (seg10 < phba->ktime_seg10_min) 684 phba->ktime_seg10_min = seg10; 685 else if (seg10 > phba->ktime_seg10_max) 686 phba->ktime_seg10_max = seg10; 687 phba->ktime_status_samples++; 688 } 689 #endif 690 691 /** 692 * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response 693 * @phba: Pointer to HBA context object. 694 * @cmdwqe: Pointer to driver command WQE object. 695 * @wcqe: Pointer to driver response CQE object. 696 * 697 * The function is called from SLI ring event handler with no 698 * lock held. This function is the completion handler for NVME FCP commands 699 * The function frees memory resources used for the NVME commands. 700 **/ 701 static void 702 lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 703 struct lpfc_wcqe_complete *wcqe) 704 { 705 struct lpfc_nvmet_tgtport *tgtp; 706 struct nvmefc_tgt_fcp_req *rsp; 707 struct lpfc_nvmet_rcv_ctx *ctxp; 708 uint32_t status, result, op, start_clean, logerr; 709 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 710 int id; 711 #endif 712 713 ctxp = cmdwqe->context2; 714 ctxp->flag &= ~LPFC_NVMET_IO_INP; 715 716 rsp = &ctxp->ctx.fcp_req; 717 op = rsp->op; 718 719 status = bf_get(lpfc_wcqe_c_status, wcqe); 720 result = wcqe->parameter; 721 722 if (phba->targetport) 723 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 724 else 725 tgtp = NULL; 726 727 lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n", 728 ctxp->oxid, op, status); 729 730 if (status) { 731 rsp->fcp_error = NVME_SC_DATA_XFER_ERROR; 732 rsp->transferred_length = 0; 733 if (tgtp) { 734 atomic_inc(&tgtp->xmt_fcp_rsp_error); 735 if (result == IOERR_ABORT_REQUESTED) 736 atomic_inc(&tgtp->xmt_fcp_rsp_aborted); 737 } 738 739 logerr = LOG_NVME_IOERR; 740 741 /* pick up SLI4 exhange busy condition */ 742 if (bf_get(lpfc_wcqe_c_xb, wcqe)) { 743 ctxp->flag |= LPFC_NVMET_XBUSY; 744 logerr |= LOG_NVME_ABTS; 745 if (tgtp) 746 atomic_inc(&tgtp->xmt_fcp_rsp_xb_set); 747 748 } else { 749 ctxp->flag &= ~LPFC_NVMET_XBUSY; 750 } 751 752 lpfc_printf_log(phba, KERN_INFO, logerr, 753 "6315 IO Error Cmpl oxid: x%x xri: x%x %x/%x " 754 "XBUSY:x%x\n", 755 ctxp->oxid, ctxp->ctxbuf->sglq->sli4_xritag, 756 status, result, ctxp->flag); 757 758 } else { 759 rsp->fcp_error = NVME_SC_SUCCESS; 760 if (op == NVMET_FCOP_RSP) 761 rsp->transferred_length = rsp->rsplen; 762 else 763 rsp->transferred_length = rsp->transfer_length; 764 if (tgtp) 765 atomic_inc(&tgtp->xmt_fcp_rsp_cmpl); 766 } 767 768 if ((op == NVMET_FCOP_READDATA_RSP) || 769 (op == NVMET_FCOP_RSP)) { 770 /* Sanity check */ 771 ctxp->state = LPFC_NVMET_STE_DONE; 772 ctxp->entry_cnt++; 773 774 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 775 if (ctxp->ts_cmd_nvme) { 776 if (rsp->op == NVMET_FCOP_READDATA_RSP) { 777 ctxp->ts_isr_data = 778 cmdwqe->isr_timestamp; 779 ctxp->ts_data_nvme = 780 ktime_get_ns(); 781 ctxp->ts_nvme_status = 782 ctxp->ts_data_nvme; 783 ctxp->ts_status_wqput = 784 ctxp->ts_data_nvme; 785 ctxp->ts_isr_status = 786 ctxp->ts_data_nvme; 787 ctxp->ts_status_nvme = 788 ctxp->ts_data_nvme; 789 } else { 790 ctxp->ts_isr_status = 791 cmdwqe->isr_timestamp; 792 ctxp->ts_status_nvme = 793 ktime_get_ns(); 794 } 795 } 796 #endif 797 rsp->done(rsp); 798 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 799 if (ctxp->ts_cmd_nvme) 800 lpfc_nvmet_ktime(phba, ctxp); 801 #endif 802 /* lpfc_nvmet_xmt_fcp_release() will recycle the context */ 803 } else { 804 ctxp->entry_cnt++; 805 start_clean = offsetof(struct lpfc_iocbq, iocb_flag); 806 memset(((char *)cmdwqe) + start_clean, 0, 807 (sizeof(struct lpfc_iocbq) - start_clean)); 808 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 809 if (ctxp->ts_cmd_nvme) { 810 ctxp->ts_isr_data = cmdwqe->isr_timestamp; 811 ctxp->ts_data_nvme = ktime_get_ns(); 812 } 813 #endif 814 rsp->done(rsp); 815 } 816 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 817 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { 818 id = raw_smp_processor_id(); 819 this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); 820 if (ctxp->cpu != id) 821 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 822 "6704 CPU Check cmdcmpl: " 823 "cpu %d expect %d\n", 824 id, ctxp->cpu); 825 } 826 #endif 827 } 828 829 static int 830 lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport, 831 struct nvmefc_tgt_ls_req *rsp) 832 { 833 struct lpfc_nvmet_rcv_ctx *ctxp = 834 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.ls_req); 835 struct lpfc_hba *phba = ctxp->phba; 836 struct hbq_dmabuf *nvmebuf = 837 (struct hbq_dmabuf *)ctxp->rqb_buffer; 838 struct lpfc_iocbq *nvmewqeq; 839 struct lpfc_nvmet_tgtport *nvmep = tgtport->private; 840 struct lpfc_dmabuf dmabuf; 841 struct ulp_bde64 bpl; 842 int rc; 843 844 if (phba->pport->load_flag & FC_UNLOADING) 845 return -ENODEV; 846 847 if (phba->pport->load_flag & FC_UNLOADING) 848 return -ENODEV; 849 850 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 851 "6023 NVMET LS rsp oxid x%x\n", ctxp->oxid); 852 853 if ((ctxp->state != LPFC_NVMET_STE_LS_RCV) || 854 (ctxp->entry_cnt != 1)) { 855 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 856 "6412 NVMET LS rsp state mismatch " 857 "oxid x%x: %d %d\n", 858 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 859 } 860 ctxp->state = LPFC_NVMET_STE_LS_RSP; 861 ctxp->entry_cnt++; 862 863 nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma, 864 rsp->rsplen); 865 if (nvmewqeq == NULL) { 866 atomic_inc(&nvmep->xmt_ls_drop); 867 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 868 "6150 LS Drop IO x%x: Prep\n", 869 ctxp->oxid); 870 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 871 atomic_inc(&nvmep->xmt_ls_abort); 872 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, 873 ctxp->sid, ctxp->oxid); 874 return -ENOMEM; 875 } 876 877 /* Save numBdes for bpl2sgl */ 878 nvmewqeq->rsvd2 = 1; 879 nvmewqeq->hba_wqidx = 0; 880 nvmewqeq->context3 = &dmabuf; 881 dmabuf.virt = &bpl; 882 bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow; 883 bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh; 884 bpl.tus.f.bdeSize = rsp->rsplen; 885 bpl.tus.f.bdeFlags = 0; 886 bpl.tus.w = le32_to_cpu(bpl.tus.w); 887 888 nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp; 889 nvmewqeq->iocb_cmpl = NULL; 890 nvmewqeq->context2 = ctxp; 891 892 lpfc_nvmeio_data(phba, "NVMET LS RESP: xri x%x wqidx x%x len x%x\n", 893 ctxp->oxid, nvmewqeq->hba_wqidx, rsp->rsplen); 894 895 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 896 if (rc == WQE_SUCCESS) { 897 /* 898 * Okay to repost buffer here, but wait till cmpl 899 * before freeing ctxp and iocbq. 900 */ 901 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 902 atomic_inc(&nvmep->xmt_ls_rsp); 903 return 0; 904 } 905 /* Give back resources */ 906 atomic_inc(&nvmep->xmt_ls_drop); 907 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 908 "6151 LS Drop IO x%x: Issue %d\n", 909 ctxp->oxid, rc); 910 911 lpfc_nlp_put(nvmewqeq->context1); 912 913 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 914 atomic_inc(&nvmep->xmt_ls_abort); 915 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); 916 return -ENXIO; 917 } 918 919 static int 920 lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport, 921 struct nvmefc_tgt_fcp_req *rsp) 922 { 923 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 924 struct lpfc_nvmet_rcv_ctx *ctxp = 925 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 926 struct lpfc_hba *phba = ctxp->phba; 927 struct lpfc_queue *wq; 928 struct lpfc_iocbq *nvmewqeq; 929 struct lpfc_sli_ring *pring; 930 unsigned long iflags; 931 int rc; 932 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 933 int id; 934 #endif 935 936 if (phba->pport->load_flag & FC_UNLOADING) { 937 rc = -ENODEV; 938 goto aerr; 939 } 940 941 if (phba->pport->load_flag & FC_UNLOADING) { 942 rc = -ENODEV; 943 goto aerr; 944 } 945 946 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 947 if (ctxp->ts_cmd_nvme) { 948 if (rsp->op == NVMET_FCOP_RSP) 949 ctxp->ts_nvme_status = ktime_get_ns(); 950 else 951 ctxp->ts_nvme_data = ktime_get_ns(); 952 } 953 954 /* Setup the hdw queue if not already set */ 955 if (!ctxp->hdwq) 956 ctxp->hdwq = &phba->sli4_hba.hdwq[rsp->hwqid]; 957 958 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { 959 id = raw_smp_processor_id(); 960 this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); 961 if (rsp->hwqid != id) 962 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 963 "6705 CPU Check OP: " 964 "cpu %d expect %d\n", 965 id, rsp->hwqid); 966 ctxp->cpu = id; /* Setup cpu for cmpl check */ 967 } 968 #endif 969 970 /* Sanity check */ 971 if ((ctxp->flag & LPFC_NVMET_ABTS_RCV) || 972 (ctxp->state == LPFC_NVMET_STE_ABORT)) { 973 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 974 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 975 "6102 IO oxid x%x aborted\n", 976 ctxp->oxid); 977 rc = -ENXIO; 978 goto aerr; 979 } 980 981 nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp); 982 if (nvmewqeq == NULL) { 983 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 984 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 985 "6152 FCP Drop IO x%x: Prep\n", 986 ctxp->oxid); 987 rc = -ENXIO; 988 goto aerr; 989 } 990 991 nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp; 992 nvmewqeq->iocb_cmpl = NULL; 993 nvmewqeq->context2 = ctxp; 994 nvmewqeq->iocb_flag |= LPFC_IO_NVMET; 995 ctxp->wqeq->hba_wqidx = rsp->hwqid; 996 997 lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n", 998 ctxp->oxid, rsp->op, rsp->rsplen); 999 1000 ctxp->flag |= LPFC_NVMET_IO_INP; 1001 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 1002 if (rc == WQE_SUCCESS) { 1003 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1004 if (!ctxp->ts_cmd_nvme) 1005 return 0; 1006 if (rsp->op == NVMET_FCOP_RSP) 1007 ctxp->ts_status_wqput = ktime_get_ns(); 1008 else 1009 ctxp->ts_data_wqput = ktime_get_ns(); 1010 #endif 1011 return 0; 1012 } 1013 1014 if (rc == -EBUSY) { 1015 /* 1016 * WQ was full, so queue nvmewqeq to be sent after 1017 * WQE release CQE 1018 */ 1019 ctxp->flag |= LPFC_NVMET_DEFER_WQFULL; 1020 wq = ctxp->hdwq->io_wq; 1021 pring = wq->pring; 1022 spin_lock_irqsave(&pring->ring_lock, iflags); 1023 list_add_tail(&nvmewqeq->list, &wq->wqfull_list); 1024 wq->q_flag |= HBA_NVMET_WQFULL; 1025 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1026 atomic_inc(&lpfc_nvmep->defer_wqfull); 1027 return 0; 1028 } 1029 1030 /* Give back resources */ 1031 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 1032 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1033 "6153 FCP Drop IO x%x: Issue: %d\n", 1034 ctxp->oxid, rc); 1035 1036 ctxp->wqeq->hba_wqidx = 0; 1037 nvmewqeq->context2 = NULL; 1038 nvmewqeq->context3 = NULL; 1039 rc = -EBUSY; 1040 aerr: 1041 return rc; 1042 } 1043 1044 static void 1045 lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport) 1046 { 1047 struct lpfc_nvmet_tgtport *tport = targetport->private; 1048 1049 /* release any threads waiting for the unreg to complete */ 1050 if (tport->phba->targetport) 1051 complete(tport->tport_unreg_cmp); 1052 } 1053 1054 static void 1055 lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport, 1056 struct nvmefc_tgt_fcp_req *req) 1057 { 1058 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1059 struct lpfc_nvmet_rcv_ctx *ctxp = 1060 container_of(req, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1061 struct lpfc_hba *phba = ctxp->phba; 1062 struct lpfc_queue *wq; 1063 unsigned long flags; 1064 1065 if (phba->pport->load_flag & FC_UNLOADING) 1066 return; 1067 1068 if (phba->pport->load_flag & FC_UNLOADING) 1069 return; 1070 1071 if (!ctxp->hdwq) 1072 ctxp->hdwq = &phba->sli4_hba.hdwq[0]; 1073 1074 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1075 "6103 NVMET Abort op: oxid x%x flg x%x ste %d\n", 1076 ctxp->oxid, ctxp->flag, ctxp->state); 1077 1078 lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n", 1079 ctxp->oxid, ctxp->flag, ctxp->state); 1080 1081 atomic_inc(&lpfc_nvmep->xmt_fcp_abort); 1082 1083 spin_lock_irqsave(&ctxp->ctxlock, flags); 1084 1085 /* Since iaab/iaar are NOT set, we need to check 1086 * if the firmware is in process of aborting IO 1087 */ 1088 if (ctxp->flag & (LPFC_NVMET_XBUSY | LPFC_NVMET_ABORT_OP)) { 1089 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1090 return; 1091 } 1092 ctxp->flag |= LPFC_NVMET_ABORT_OP; 1093 1094 if (ctxp->flag & LPFC_NVMET_DEFER_WQFULL) { 1095 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1096 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1097 ctxp->oxid); 1098 wq = ctxp->hdwq->io_wq; 1099 lpfc_nvmet_wqfull_flush(phba, wq, ctxp); 1100 return; 1101 } 1102 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1103 1104 /* An state of LPFC_NVMET_STE_RCV means we have just received 1105 * the NVME command and have not started processing it. 1106 * (by issuing any IO WQEs on this exchange yet) 1107 */ 1108 if (ctxp->state == LPFC_NVMET_STE_RCV) 1109 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1110 ctxp->oxid); 1111 else 1112 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1113 ctxp->oxid); 1114 } 1115 1116 static void 1117 lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport, 1118 struct nvmefc_tgt_fcp_req *rsp) 1119 { 1120 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1121 struct lpfc_nvmet_rcv_ctx *ctxp = 1122 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1123 struct lpfc_hba *phba = ctxp->phba; 1124 unsigned long flags; 1125 bool aborting = false; 1126 1127 spin_lock_irqsave(&ctxp->ctxlock, flags); 1128 if (ctxp->flag & LPFC_NVMET_XBUSY) 1129 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1130 "6027 NVMET release with XBUSY flag x%x" 1131 " oxid x%x\n", 1132 ctxp->flag, ctxp->oxid); 1133 else if (ctxp->state != LPFC_NVMET_STE_DONE && 1134 ctxp->state != LPFC_NVMET_STE_ABORT) 1135 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1136 "6413 NVMET release bad state %d %d oxid x%x\n", 1137 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 1138 1139 if ((ctxp->flag & LPFC_NVMET_ABORT_OP) || 1140 (ctxp->flag & LPFC_NVMET_XBUSY)) { 1141 aborting = true; 1142 /* let the abort path do the real release */ 1143 lpfc_nvmet_defer_release(phba, ctxp); 1144 } 1145 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1146 1147 lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid, 1148 ctxp->state, aborting); 1149 1150 atomic_inc(&lpfc_nvmep->xmt_fcp_release); 1151 ctxp->flag &= ~LPFC_NVMET_TNOTIFY; 1152 1153 if (aborting) 1154 return; 1155 1156 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 1157 } 1158 1159 static void 1160 lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport, 1161 struct nvmefc_tgt_fcp_req *rsp) 1162 { 1163 struct lpfc_nvmet_tgtport *tgtp; 1164 struct lpfc_nvmet_rcv_ctx *ctxp = 1165 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1166 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; 1167 struct lpfc_hba *phba = ctxp->phba; 1168 unsigned long iflag; 1169 1170 1171 lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n", 1172 ctxp->oxid, ctxp->size, raw_smp_processor_id()); 1173 1174 if (!nvmebuf) { 1175 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1176 "6425 Defer rcv: no buffer oxid x%x: " 1177 "flg %x ste %x\n", 1178 ctxp->oxid, ctxp->flag, ctxp->state); 1179 return; 1180 } 1181 1182 tgtp = phba->targetport->private; 1183 if (tgtp) 1184 atomic_inc(&tgtp->rcv_fcp_cmd_defer); 1185 1186 /* Free the nvmebuf since a new buffer already replaced it */ 1187 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); 1188 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1189 ctxp->rqb_buffer = NULL; 1190 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1191 } 1192 1193 static void 1194 lpfc_nvmet_discovery_event(struct nvmet_fc_target_port *tgtport) 1195 { 1196 struct lpfc_nvmet_tgtport *tgtp; 1197 struct lpfc_hba *phba; 1198 uint32_t rc; 1199 1200 tgtp = tgtport->private; 1201 phba = tgtp->phba; 1202 1203 rc = lpfc_issue_els_rscn(phba->pport, 0); 1204 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1205 "6420 NVMET subsystem change: Notification %s\n", 1206 (rc) ? "Failed" : "Sent"); 1207 } 1208 1209 static struct nvmet_fc_target_template lpfc_tgttemplate = { 1210 .targetport_delete = lpfc_nvmet_targetport_delete, 1211 .xmt_ls_rsp = lpfc_nvmet_xmt_ls_rsp, 1212 .fcp_op = lpfc_nvmet_xmt_fcp_op, 1213 .fcp_abort = lpfc_nvmet_xmt_fcp_abort, 1214 .fcp_req_release = lpfc_nvmet_xmt_fcp_release, 1215 .defer_rcv = lpfc_nvmet_defer_rcv, 1216 .discovery_event = lpfc_nvmet_discovery_event, 1217 1218 .max_hw_queues = 1, 1219 .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, 1220 .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, 1221 .dma_boundary = 0xFFFFFFFF, 1222 1223 /* optional features */ 1224 .target_features = 0, 1225 /* sizes of additional private data for data structures */ 1226 .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport), 1227 }; 1228 1229 static void 1230 __lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba *phba, 1231 struct lpfc_nvmet_ctx_info *infop) 1232 { 1233 struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf; 1234 unsigned long flags; 1235 1236 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, flags); 1237 list_for_each_entry_safe(ctx_buf, next_ctx_buf, 1238 &infop->nvmet_ctx_list, list) { 1239 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1240 list_del_init(&ctx_buf->list); 1241 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1242 1243 __lpfc_clear_active_sglq(phba, ctx_buf->sglq->sli4_lxritag); 1244 ctx_buf->sglq->state = SGL_FREED; 1245 ctx_buf->sglq->ndlp = NULL; 1246 1247 spin_lock(&phba->sli4_hba.sgl_list_lock); 1248 list_add_tail(&ctx_buf->sglq->list, 1249 &phba->sli4_hba.lpfc_nvmet_sgl_list); 1250 spin_unlock(&phba->sli4_hba.sgl_list_lock); 1251 1252 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); 1253 kfree(ctx_buf->context); 1254 } 1255 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, flags); 1256 } 1257 1258 static void 1259 lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba) 1260 { 1261 struct lpfc_nvmet_ctx_info *infop; 1262 int i, j; 1263 1264 /* The first context list, MRQ 0 CPU 0 */ 1265 infop = phba->sli4_hba.nvmet_ctx_info; 1266 if (!infop) 1267 return; 1268 1269 /* Cycle the the entire CPU context list for every MRQ */ 1270 for (i = 0; i < phba->cfg_nvmet_mrq; i++) { 1271 for_each_present_cpu(j) { 1272 infop = lpfc_get_ctx_list(phba, j, i); 1273 __lpfc_nvmet_clean_io_for_cpu(phba, infop); 1274 } 1275 } 1276 kfree(phba->sli4_hba.nvmet_ctx_info); 1277 phba->sli4_hba.nvmet_ctx_info = NULL; 1278 } 1279 1280 static int 1281 lpfc_nvmet_setup_io_context(struct lpfc_hba *phba) 1282 { 1283 struct lpfc_nvmet_ctxbuf *ctx_buf; 1284 struct lpfc_iocbq *nvmewqe; 1285 union lpfc_wqe128 *wqe; 1286 struct lpfc_nvmet_ctx_info *last_infop; 1287 struct lpfc_nvmet_ctx_info *infop; 1288 int i, j, idx, cpu; 1289 1290 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1291 "6403 Allocate NVMET resources for %d XRIs\n", 1292 phba->sli4_hba.nvmet_xri_cnt); 1293 1294 phba->sli4_hba.nvmet_ctx_info = kcalloc( 1295 phba->sli4_hba.num_possible_cpu * phba->cfg_nvmet_mrq, 1296 sizeof(struct lpfc_nvmet_ctx_info), GFP_KERNEL); 1297 if (!phba->sli4_hba.nvmet_ctx_info) { 1298 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 1299 "6419 Failed allocate memory for " 1300 "nvmet context lists\n"); 1301 return -ENOMEM; 1302 } 1303 1304 /* 1305 * Assuming X CPUs in the system, and Y MRQs, allocate some 1306 * lpfc_nvmet_ctx_info structures as follows: 1307 * 1308 * cpu0/mrq0 cpu1/mrq0 ... cpuX/mrq0 1309 * cpu0/mrq1 cpu1/mrq1 ... cpuX/mrq1 1310 * ... 1311 * cpuX/mrqY cpuX/mrqY ... cpuX/mrqY 1312 * 1313 * Each line represents a MRQ "silo" containing an entry for 1314 * every CPU. 1315 * 1316 * MRQ X is initially assumed to be associated with CPU X, thus 1317 * contexts are initially distributed across all MRQs using 1318 * the MRQ index (N) as follows cpuN/mrqN. When contexts are 1319 * freed, the are freed to the MRQ silo based on the CPU number 1320 * of the IO completion. Thus a context that was allocated for MRQ A 1321 * whose IO completed on CPU B will be freed to cpuB/mrqA. 1322 */ 1323 for_each_possible_cpu(i) { 1324 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1325 infop = lpfc_get_ctx_list(phba, i, j); 1326 INIT_LIST_HEAD(&infop->nvmet_ctx_list); 1327 spin_lock_init(&infop->nvmet_ctx_list_lock); 1328 infop->nvmet_ctx_list_cnt = 0; 1329 } 1330 } 1331 1332 /* 1333 * Setup the next CPU context info ptr for each MRQ. 1334 * MRQ 0 will cycle thru CPUs 0 - X separately from 1335 * MRQ 1 cycling thru CPUs 0 - X, and so on. 1336 */ 1337 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1338 last_infop = lpfc_get_ctx_list(phba, 1339 cpumask_first(cpu_present_mask), 1340 j); 1341 for (i = phba->sli4_hba.num_possible_cpu - 1; i >= 0; i--) { 1342 infop = lpfc_get_ctx_list(phba, i, j); 1343 infop->nvmet_ctx_next_cpu = last_infop; 1344 last_infop = infop; 1345 } 1346 } 1347 1348 /* For all nvmet xris, allocate resources needed to process a 1349 * received command on a per xri basis. 1350 */ 1351 idx = 0; 1352 cpu = cpumask_first(cpu_present_mask); 1353 for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) { 1354 ctx_buf = kzalloc(sizeof(*ctx_buf), GFP_KERNEL); 1355 if (!ctx_buf) { 1356 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1357 "6404 Ran out of memory for NVMET\n"); 1358 return -ENOMEM; 1359 } 1360 1361 ctx_buf->context = kzalloc(sizeof(*ctx_buf->context), 1362 GFP_KERNEL); 1363 if (!ctx_buf->context) { 1364 kfree(ctx_buf); 1365 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1366 "6405 Ran out of NVMET " 1367 "context memory\n"); 1368 return -ENOMEM; 1369 } 1370 ctx_buf->context->ctxbuf = ctx_buf; 1371 ctx_buf->context->state = LPFC_NVMET_STE_FREE; 1372 1373 ctx_buf->iocbq = lpfc_sli_get_iocbq(phba); 1374 if (!ctx_buf->iocbq) { 1375 kfree(ctx_buf->context); 1376 kfree(ctx_buf); 1377 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1378 "6406 Ran out of NVMET iocb/WQEs\n"); 1379 return -ENOMEM; 1380 } 1381 ctx_buf->iocbq->iocb_flag = LPFC_IO_NVMET; 1382 nvmewqe = ctx_buf->iocbq; 1383 wqe = &nvmewqe->wqe; 1384 1385 /* Initialize WQE */ 1386 memset(wqe, 0, sizeof(union lpfc_wqe)); 1387 1388 ctx_buf->iocbq->context1 = NULL; 1389 spin_lock(&phba->sli4_hba.sgl_list_lock); 1390 ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq); 1391 spin_unlock(&phba->sli4_hba.sgl_list_lock); 1392 if (!ctx_buf->sglq) { 1393 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); 1394 kfree(ctx_buf->context); 1395 kfree(ctx_buf); 1396 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1397 "6407 Ran out of NVMET XRIs\n"); 1398 return -ENOMEM; 1399 } 1400 INIT_WORK(&ctx_buf->defer_work, lpfc_nvmet_fcp_rqst_defer_work); 1401 1402 /* 1403 * Add ctx to MRQidx context list. Our initial assumption 1404 * is MRQidx will be associated with CPUidx. This association 1405 * can change on the fly. 1406 */ 1407 infop = lpfc_get_ctx_list(phba, cpu, idx); 1408 spin_lock(&infop->nvmet_ctx_list_lock); 1409 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); 1410 infop->nvmet_ctx_list_cnt++; 1411 spin_unlock(&infop->nvmet_ctx_list_lock); 1412 1413 /* Spread ctx structures evenly across all MRQs */ 1414 idx++; 1415 if (idx >= phba->cfg_nvmet_mrq) { 1416 idx = 0; 1417 cpu = cpumask_first(cpu_present_mask); 1418 continue; 1419 } 1420 cpu = cpumask_next(cpu, cpu_present_mask); 1421 if (cpu == nr_cpu_ids) 1422 cpu = cpumask_first(cpu_present_mask); 1423 1424 } 1425 1426 for_each_present_cpu(i) { 1427 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1428 infop = lpfc_get_ctx_list(phba, i, j); 1429 lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT, 1430 "6408 TOTAL NVMET ctx for CPU %d " 1431 "MRQ %d: cnt %d nextcpu x%px\n", 1432 i, j, infop->nvmet_ctx_list_cnt, 1433 infop->nvmet_ctx_next_cpu); 1434 } 1435 } 1436 return 0; 1437 } 1438 1439 int 1440 lpfc_nvmet_create_targetport(struct lpfc_hba *phba) 1441 { 1442 struct lpfc_vport *vport = phba->pport; 1443 struct lpfc_nvmet_tgtport *tgtp; 1444 struct nvmet_fc_port_info pinfo; 1445 int error; 1446 1447 if (phba->targetport) 1448 return 0; 1449 1450 error = lpfc_nvmet_setup_io_context(phba); 1451 if (error) 1452 return error; 1453 1454 memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info)); 1455 pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 1456 pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 1457 pinfo.port_id = vport->fc_myDID; 1458 1459 /* We need to tell the transport layer + 1 because it takes page 1460 * alignment into account. When space for the SGL is allocated we 1461 * allocate + 3, one for cmd, one for rsp and one for this alignment 1462 */ 1463 lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 1464 lpfc_tgttemplate.max_hw_queues = phba->cfg_hdw_queue; 1465 lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP; 1466 1467 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1468 error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate, 1469 &phba->pcidev->dev, 1470 &phba->targetport); 1471 #else 1472 error = -ENOENT; 1473 #endif 1474 if (error) { 1475 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 1476 "6025 Cannot register NVME targetport x%x: " 1477 "portnm %llx nodenm %llx segs %d qs %d\n", 1478 error, 1479 pinfo.port_name, pinfo.node_name, 1480 lpfc_tgttemplate.max_sgl_segments, 1481 lpfc_tgttemplate.max_hw_queues); 1482 phba->targetport = NULL; 1483 phba->nvmet_support = 0; 1484 1485 lpfc_nvmet_cleanup_io_context(phba); 1486 1487 } else { 1488 tgtp = (struct lpfc_nvmet_tgtport *) 1489 phba->targetport->private; 1490 tgtp->phba = phba; 1491 1492 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 1493 "6026 Registered NVME " 1494 "targetport: x%px, private x%px " 1495 "portnm %llx nodenm %llx segs %d qs %d\n", 1496 phba->targetport, tgtp, 1497 pinfo.port_name, pinfo.node_name, 1498 lpfc_tgttemplate.max_sgl_segments, 1499 lpfc_tgttemplate.max_hw_queues); 1500 1501 atomic_set(&tgtp->rcv_ls_req_in, 0); 1502 atomic_set(&tgtp->rcv_ls_req_out, 0); 1503 atomic_set(&tgtp->rcv_ls_req_drop, 0); 1504 atomic_set(&tgtp->xmt_ls_abort, 0); 1505 atomic_set(&tgtp->xmt_ls_abort_cmpl, 0); 1506 atomic_set(&tgtp->xmt_ls_rsp, 0); 1507 atomic_set(&tgtp->xmt_ls_drop, 0); 1508 atomic_set(&tgtp->xmt_ls_rsp_error, 0); 1509 atomic_set(&tgtp->xmt_ls_rsp_xb_set, 0); 1510 atomic_set(&tgtp->xmt_ls_rsp_aborted, 0); 1511 atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0); 1512 atomic_set(&tgtp->rcv_fcp_cmd_in, 0); 1513 atomic_set(&tgtp->rcv_fcp_cmd_out, 0); 1514 atomic_set(&tgtp->rcv_fcp_cmd_drop, 0); 1515 atomic_set(&tgtp->xmt_fcp_drop, 0); 1516 atomic_set(&tgtp->xmt_fcp_read_rsp, 0); 1517 atomic_set(&tgtp->xmt_fcp_read, 0); 1518 atomic_set(&tgtp->xmt_fcp_write, 0); 1519 atomic_set(&tgtp->xmt_fcp_rsp, 0); 1520 atomic_set(&tgtp->xmt_fcp_release, 0); 1521 atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0); 1522 atomic_set(&tgtp->xmt_fcp_rsp_error, 0); 1523 atomic_set(&tgtp->xmt_fcp_rsp_xb_set, 0); 1524 atomic_set(&tgtp->xmt_fcp_rsp_aborted, 0); 1525 atomic_set(&tgtp->xmt_fcp_rsp_drop, 0); 1526 atomic_set(&tgtp->xmt_fcp_xri_abort_cqe, 0); 1527 atomic_set(&tgtp->xmt_fcp_abort, 0); 1528 atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0); 1529 atomic_set(&tgtp->xmt_abort_unsol, 0); 1530 atomic_set(&tgtp->xmt_abort_sol, 0); 1531 atomic_set(&tgtp->xmt_abort_rsp, 0); 1532 atomic_set(&tgtp->xmt_abort_rsp_error, 0); 1533 atomic_set(&tgtp->defer_ctx, 0); 1534 atomic_set(&tgtp->defer_fod, 0); 1535 atomic_set(&tgtp->defer_wqfull, 0); 1536 } 1537 return error; 1538 } 1539 1540 int 1541 lpfc_nvmet_update_targetport(struct lpfc_hba *phba) 1542 { 1543 struct lpfc_vport *vport = phba->pport; 1544 1545 if (!phba->targetport) 1546 return 0; 1547 1548 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 1549 "6007 Update NVMET port x%px did x%x\n", 1550 phba->targetport, vport->fc_myDID); 1551 1552 phba->targetport->port_id = vport->fc_myDID; 1553 return 0; 1554 } 1555 1556 /** 1557 * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort 1558 * @phba: pointer to lpfc hba data structure. 1559 * @axri: pointer to the nvmet xri abort wcqe structure. 1560 * 1561 * This routine is invoked by the worker thread to process a SLI4 fast-path 1562 * NVMET aborted xri. 1563 **/ 1564 void 1565 lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba, 1566 struct sli4_wcqe_xri_aborted *axri) 1567 { 1568 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1569 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 1570 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 1571 struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp; 1572 struct lpfc_nvmet_tgtport *tgtp; 1573 struct nvmefc_tgt_fcp_req *req = NULL; 1574 struct lpfc_nodelist *ndlp; 1575 unsigned long iflag = 0; 1576 int rrq_empty = 0; 1577 bool released = false; 1578 1579 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1580 "6317 XB aborted xri x%x rxid x%x\n", xri, rxid); 1581 1582 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) 1583 return; 1584 1585 if (phba->targetport) { 1586 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1587 atomic_inc(&tgtp->xmt_fcp_xri_abort_cqe); 1588 } 1589 1590 spin_lock_irqsave(&phba->hbalock, iflag); 1591 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1592 list_for_each_entry_safe(ctxp, next_ctxp, 1593 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, 1594 list) { 1595 if (ctxp->ctxbuf->sglq->sli4_xritag != xri) 1596 continue; 1597 1598 spin_lock(&ctxp->ctxlock); 1599 /* Check if we already received a free context call 1600 * and we have completed processing an abort situation. 1601 */ 1602 if (ctxp->flag & LPFC_NVMET_CTX_RLS && 1603 !(ctxp->flag & LPFC_NVMET_ABORT_OP)) { 1604 list_del_init(&ctxp->list); 1605 released = true; 1606 } 1607 ctxp->flag &= ~LPFC_NVMET_XBUSY; 1608 spin_unlock(&ctxp->ctxlock); 1609 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1610 1611 rrq_empty = list_empty(&phba->active_rrq_list); 1612 spin_unlock_irqrestore(&phba->hbalock, iflag); 1613 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 1614 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 1615 (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 1616 ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { 1617 lpfc_set_rrq_active(phba, ndlp, 1618 ctxp->ctxbuf->sglq->sli4_lxritag, 1619 rxid, 1); 1620 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 1621 } 1622 1623 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1624 "6318 XB aborted oxid x%x flg x%x (%x)\n", 1625 ctxp->oxid, ctxp->flag, released); 1626 if (released) 1627 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 1628 1629 if (rrq_empty) 1630 lpfc_worker_wake_up(phba); 1631 return; 1632 } 1633 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1634 spin_unlock_irqrestore(&phba->hbalock, iflag); 1635 1636 ctxp = lpfc_nvmet_get_ctx_for_xri(phba, xri); 1637 if (ctxp) { 1638 /* 1639 * Abort already done by FW, so BA_ACC sent. 1640 * However, the transport may be unaware. 1641 */ 1642 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1643 "6323 NVMET Rcv ABTS xri x%x ctxp state x%x " 1644 "flag x%x oxid x%x rxid x%x\n", 1645 xri, ctxp->state, ctxp->flag, ctxp->oxid, 1646 rxid); 1647 1648 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1649 ctxp->flag |= LPFC_NVMET_ABTS_RCV; 1650 ctxp->state = LPFC_NVMET_STE_ABORT; 1651 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1652 1653 lpfc_nvmeio_data(phba, 1654 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1655 xri, raw_smp_processor_id(), 0); 1656 1657 req = &ctxp->ctx.fcp_req; 1658 if (req) 1659 nvmet_fc_rcv_fcp_abort(phba->targetport, req); 1660 } 1661 #endif 1662 } 1663 1664 int 1665 lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport, 1666 struct fc_frame_header *fc_hdr) 1667 { 1668 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1669 struct lpfc_hba *phba = vport->phba; 1670 struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp; 1671 struct nvmefc_tgt_fcp_req *rsp; 1672 uint32_t sid; 1673 uint16_t oxid, xri; 1674 unsigned long iflag = 0; 1675 1676 sid = sli4_sid_from_fc_hdr(fc_hdr); 1677 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 1678 1679 spin_lock_irqsave(&phba->hbalock, iflag); 1680 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1681 list_for_each_entry_safe(ctxp, next_ctxp, 1682 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, 1683 list) { 1684 if (ctxp->oxid != oxid || ctxp->sid != sid) 1685 continue; 1686 1687 xri = ctxp->ctxbuf->sglq->sli4_xritag; 1688 1689 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1690 spin_unlock_irqrestore(&phba->hbalock, iflag); 1691 1692 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1693 ctxp->flag |= LPFC_NVMET_ABTS_RCV; 1694 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1695 1696 lpfc_nvmeio_data(phba, 1697 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1698 xri, raw_smp_processor_id(), 0); 1699 1700 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1701 "6319 NVMET Rcv ABTS:acc xri x%x\n", xri); 1702 1703 rsp = &ctxp->ctx.fcp_req; 1704 nvmet_fc_rcv_fcp_abort(phba->targetport, rsp); 1705 1706 /* Respond with BA_ACC accordingly */ 1707 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1708 return 0; 1709 } 1710 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1711 spin_unlock_irqrestore(&phba->hbalock, iflag); 1712 1713 /* check the wait list */ 1714 if (phba->sli4_hba.nvmet_io_wait_cnt) { 1715 struct rqb_dmabuf *nvmebuf; 1716 struct fc_frame_header *fc_hdr_tmp; 1717 u32 sid_tmp; 1718 u16 oxid_tmp; 1719 bool found = false; 1720 1721 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 1722 1723 /* match by oxid and s_id */ 1724 list_for_each_entry(nvmebuf, 1725 &phba->sli4_hba.lpfc_nvmet_io_wait_list, 1726 hbuf.list) { 1727 fc_hdr_tmp = (struct fc_frame_header *) 1728 (nvmebuf->hbuf.virt); 1729 oxid_tmp = be16_to_cpu(fc_hdr_tmp->fh_ox_id); 1730 sid_tmp = sli4_sid_from_fc_hdr(fc_hdr_tmp); 1731 if (oxid_tmp != oxid || sid_tmp != sid) 1732 continue; 1733 1734 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1735 "6321 NVMET Rcv ABTS oxid x%x from x%x " 1736 "is waiting for a ctxp\n", 1737 oxid, sid); 1738 1739 list_del_init(&nvmebuf->hbuf.list); 1740 phba->sli4_hba.nvmet_io_wait_cnt--; 1741 found = true; 1742 break; 1743 } 1744 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 1745 iflag); 1746 1747 /* free buffer since already posted a new DMA buffer to RQ */ 1748 if (found) { 1749 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); 1750 /* Respond with BA_ACC accordingly */ 1751 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1752 return 0; 1753 } 1754 } 1755 1756 /* check active list */ 1757 ctxp = lpfc_nvmet_get_ctx_for_oxid(phba, oxid, sid); 1758 if (ctxp) { 1759 xri = ctxp->ctxbuf->sglq->sli4_xritag; 1760 1761 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1762 ctxp->flag |= (LPFC_NVMET_ABTS_RCV | LPFC_NVMET_ABORT_OP); 1763 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1764 1765 lpfc_nvmeio_data(phba, 1766 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1767 xri, raw_smp_processor_id(), 0); 1768 1769 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1770 "6322 NVMET Rcv ABTS:acc oxid x%x xri x%x " 1771 "flag x%x state x%x\n", 1772 ctxp->oxid, xri, ctxp->flag, ctxp->state); 1773 1774 if (ctxp->flag & LPFC_NVMET_TNOTIFY) { 1775 /* Notify the transport */ 1776 nvmet_fc_rcv_fcp_abort(phba->targetport, 1777 &ctxp->ctx.fcp_req); 1778 } else { 1779 cancel_work_sync(&ctxp->ctxbuf->defer_work); 1780 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1781 lpfc_nvmet_defer_release(phba, ctxp); 1782 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1783 } 1784 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1785 ctxp->oxid); 1786 1787 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1788 return 0; 1789 } 1790 1791 lpfc_nvmeio_data(phba, "NVMET ABTS RCV: oxid x%x CPU %02x rjt %d\n", 1792 oxid, raw_smp_processor_id(), 1); 1793 1794 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1795 "6320 NVMET Rcv ABTS:rjt oxid x%x\n", oxid); 1796 1797 /* Respond with BA_RJT accordingly */ 1798 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0); 1799 #endif 1800 return 0; 1801 } 1802 1803 static void 1804 lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq, 1805 struct lpfc_nvmet_rcv_ctx *ctxp) 1806 { 1807 struct lpfc_sli_ring *pring; 1808 struct lpfc_iocbq *nvmewqeq; 1809 struct lpfc_iocbq *next_nvmewqeq; 1810 unsigned long iflags; 1811 struct lpfc_wcqe_complete wcqe; 1812 struct lpfc_wcqe_complete *wcqep; 1813 1814 pring = wq->pring; 1815 wcqep = &wcqe; 1816 1817 /* Fake an ABORT error code back to cmpl routine */ 1818 memset(wcqep, 0, sizeof(struct lpfc_wcqe_complete)); 1819 bf_set(lpfc_wcqe_c_status, wcqep, IOSTAT_LOCAL_REJECT); 1820 wcqep->parameter = IOERR_ABORT_REQUESTED; 1821 1822 spin_lock_irqsave(&pring->ring_lock, iflags); 1823 list_for_each_entry_safe(nvmewqeq, next_nvmewqeq, 1824 &wq->wqfull_list, list) { 1825 if (ctxp) { 1826 /* Checking for a specific IO to flush */ 1827 if (nvmewqeq->context2 == ctxp) { 1828 list_del(&nvmewqeq->list); 1829 spin_unlock_irqrestore(&pring->ring_lock, 1830 iflags); 1831 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, 1832 wcqep); 1833 return; 1834 } 1835 continue; 1836 } else { 1837 /* Flush all IOs */ 1838 list_del(&nvmewqeq->list); 1839 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1840 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, wcqep); 1841 spin_lock_irqsave(&pring->ring_lock, iflags); 1842 } 1843 } 1844 if (!ctxp) 1845 wq->q_flag &= ~HBA_NVMET_WQFULL; 1846 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1847 } 1848 1849 void 1850 lpfc_nvmet_wqfull_process(struct lpfc_hba *phba, 1851 struct lpfc_queue *wq) 1852 { 1853 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1854 struct lpfc_sli_ring *pring; 1855 struct lpfc_iocbq *nvmewqeq; 1856 struct lpfc_nvmet_rcv_ctx *ctxp; 1857 unsigned long iflags; 1858 int rc; 1859 1860 /* 1861 * Some WQE slots are available, so try to re-issue anything 1862 * on the WQ wqfull_list. 1863 */ 1864 pring = wq->pring; 1865 spin_lock_irqsave(&pring->ring_lock, iflags); 1866 while (!list_empty(&wq->wqfull_list)) { 1867 list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq, 1868 list); 1869 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1870 ctxp = (struct lpfc_nvmet_rcv_ctx *)nvmewqeq->context2; 1871 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 1872 spin_lock_irqsave(&pring->ring_lock, iflags); 1873 if (rc == -EBUSY) { 1874 /* WQ was full again, so put it back on the list */ 1875 list_add(&nvmewqeq->list, &wq->wqfull_list); 1876 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1877 return; 1878 } 1879 if (rc == WQE_SUCCESS) { 1880 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1881 if (ctxp->ts_cmd_nvme) { 1882 if (ctxp->ctx.fcp_req.op == NVMET_FCOP_RSP) 1883 ctxp->ts_status_wqput = ktime_get_ns(); 1884 else 1885 ctxp->ts_data_wqput = ktime_get_ns(); 1886 } 1887 #endif 1888 } else { 1889 WARN_ON(rc); 1890 } 1891 } 1892 wq->q_flag &= ~HBA_NVMET_WQFULL; 1893 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1894 1895 #endif 1896 } 1897 1898 void 1899 lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba) 1900 { 1901 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1902 struct lpfc_nvmet_tgtport *tgtp; 1903 struct lpfc_queue *wq; 1904 uint32_t qidx; 1905 DECLARE_COMPLETION_ONSTACK(tport_unreg_cmp); 1906 1907 if (phba->nvmet_support == 0) 1908 return; 1909 if (phba->targetport) { 1910 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1911 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) { 1912 wq = phba->sli4_hba.hdwq[qidx].io_wq; 1913 lpfc_nvmet_wqfull_flush(phba, wq, NULL); 1914 } 1915 tgtp->tport_unreg_cmp = &tport_unreg_cmp; 1916 nvmet_fc_unregister_targetport(phba->targetport); 1917 if (!wait_for_completion_timeout(tgtp->tport_unreg_cmp, 1918 msecs_to_jiffies(LPFC_NVMET_WAIT_TMO))) 1919 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1920 "6179 Unreg targetport x%px timeout " 1921 "reached.\n", phba->targetport); 1922 lpfc_nvmet_cleanup_io_context(phba); 1923 } 1924 phba->targetport = NULL; 1925 #endif 1926 } 1927 1928 /** 1929 * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer 1930 * @phba: pointer to lpfc hba data structure. 1931 * @pring: pointer to a SLI ring. 1932 * @nvmebuf: pointer to lpfc nvme command HBQ data structure. 1933 * 1934 * This routine is used for processing the WQE associated with a unsolicited 1935 * event. It first determines whether there is an existing ndlp that matches 1936 * the DID from the unsolicited WQE. If not, it will create a new one with 1937 * the DID from the unsolicited WQE. The ELS command from the unsolicited 1938 * WQE is then used to invoke the proper routine and to set up proper state 1939 * of the discovery state machine. 1940 **/ 1941 static void 1942 lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 1943 struct hbq_dmabuf *nvmebuf) 1944 { 1945 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1946 struct lpfc_nvmet_tgtport *tgtp; 1947 struct fc_frame_header *fc_hdr; 1948 struct lpfc_nvmet_rcv_ctx *ctxp; 1949 uint32_t *payload; 1950 uint32_t size, oxid, sid, rc; 1951 1952 1953 if (!nvmebuf || !phba->targetport) { 1954 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1955 "6154 LS Drop IO\n"); 1956 oxid = 0; 1957 size = 0; 1958 sid = 0; 1959 ctxp = NULL; 1960 goto dropit; 1961 } 1962 1963 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 1964 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 1965 1966 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1967 payload = (uint32_t *)(nvmebuf->dbuf.virt); 1968 size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl); 1969 sid = sli4_sid_from_fc_hdr(fc_hdr); 1970 1971 ctxp = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), GFP_ATOMIC); 1972 if (ctxp == NULL) { 1973 atomic_inc(&tgtp->rcv_ls_req_drop); 1974 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1975 "6155 LS Drop IO x%x: Alloc\n", 1976 oxid); 1977 dropit: 1978 lpfc_nvmeio_data(phba, "NVMET LS DROP: " 1979 "xri x%x sz %d from %06x\n", 1980 oxid, size, sid); 1981 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 1982 return; 1983 } 1984 ctxp->phba = phba; 1985 ctxp->size = size; 1986 ctxp->oxid = oxid; 1987 ctxp->sid = sid; 1988 ctxp->wqeq = NULL; 1989 ctxp->state = LPFC_NVMET_STE_LS_RCV; 1990 ctxp->entry_cnt = 1; 1991 ctxp->rqb_buffer = (void *)nvmebuf; 1992 ctxp->hdwq = &phba->sli4_hba.hdwq[0]; 1993 1994 lpfc_nvmeio_data(phba, "NVMET LS RCV: xri x%x sz %d from %06x\n", 1995 oxid, size, sid); 1996 /* 1997 * The calling sequence should be: 1998 * nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done 1999 * lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp. 2000 */ 2001 atomic_inc(&tgtp->rcv_ls_req_in); 2002 rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req, 2003 payload, size); 2004 2005 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 2006 "6037 NVMET Unsol rcv: sz %d rc %d: %08x %08x %08x " 2007 "%08x %08x %08x\n", size, rc, 2008 *payload, *(payload+1), *(payload+2), 2009 *(payload+3), *(payload+4), *(payload+5)); 2010 2011 if (rc == 0) { 2012 atomic_inc(&tgtp->rcv_ls_req_out); 2013 return; 2014 } 2015 2016 lpfc_nvmeio_data(phba, "NVMET LS DROP: xri x%x sz %d from %06x\n", 2017 oxid, size, sid); 2018 2019 atomic_inc(&tgtp->rcv_ls_req_drop); 2020 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2021 "6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n", 2022 ctxp->oxid, rc); 2023 2024 /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */ 2025 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 2026 2027 atomic_inc(&tgtp->xmt_ls_abort); 2028 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid); 2029 #endif 2030 } 2031 2032 static void 2033 lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf) 2034 { 2035 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2036 struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context; 2037 struct lpfc_hba *phba = ctxp->phba; 2038 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; 2039 struct lpfc_nvmet_tgtport *tgtp; 2040 uint32_t *payload, qno; 2041 uint32_t rc; 2042 unsigned long iflags; 2043 2044 if (!nvmebuf) { 2045 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2046 "6159 process_rcv_fcp_req, nvmebuf is NULL, " 2047 "oxid: x%x flg: x%x state: x%x\n", 2048 ctxp->oxid, ctxp->flag, ctxp->state); 2049 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2050 lpfc_nvmet_defer_release(phba, ctxp); 2051 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2052 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 2053 ctxp->oxid); 2054 return; 2055 } 2056 2057 if (ctxp->flag & LPFC_NVMET_ABTS_RCV) { 2058 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2059 "6324 IO oxid x%x aborted\n", 2060 ctxp->oxid); 2061 return; 2062 } 2063 2064 payload = (uint32_t *)(nvmebuf->dbuf.virt); 2065 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2066 ctxp->flag |= LPFC_NVMET_TNOTIFY; 2067 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2068 if (ctxp->ts_isr_cmd) 2069 ctxp->ts_cmd_nvme = ktime_get_ns(); 2070 #endif 2071 /* 2072 * The calling sequence should be: 2073 * nvmet_fc_rcv_fcp_req->lpfc_nvmet_xmt_fcp_op/cmp- req->done 2074 * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp. 2075 * When we return from nvmet_fc_rcv_fcp_req, all relevant info 2076 * the NVME command / FC header is stored. 2077 * A buffer has already been reposted for this IO, so just free 2078 * the nvmebuf. 2079 */ 2080 rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req, 2081 payload, ctxp->size); 2082 /* Process FCP command */ 2083 if (rc == 0) { 2084 atomic_inc(&tgtp->rcv_fcp_cmd_out); 2085 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2086 if ((ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) || 2087 (nvmebuf != ctxp->rqb_buffer)) { 2088 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2089 return; 2090 } 2091 ctxp->rqb_buffer = NULL; 2092 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2093 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */ 2094 return; 2095 } 2096 2097 /* Processing of FCP command is deferred */ 2098 if (rc == -EOVERFLOW) { 2099 lpfc_nvmeio_data(phba, "NVMET RCV BUSY: xri x%x sz %d " 2100 "from %06x\n", 2101 ctxp->oxid, ctxp->size, ctxp->sid); 2102 atomic_inc(&tgtp->rcv_fcp_cmd_out); 2103 atomic_inc(&tgtp->defer_fod); 2104 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2105 if (ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) { 2106 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2107 return; 2108 } 2109 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2110 /* 2111 * Post a replacement DMA buffer to RQ and defer 2112 * freeing rcv buffer till .defer_rcv callback 2113 */ 2114 qno = nvmebuf->idx; 2115 lpfc_post_rq_buffer( 2116 phba, phba->sli4_hba.nvmet_mrq_hdr[qno], 2117 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); 2118 return; 2119 } 2120 ctxp->flag &= ~LPFC_NVMET_TNOTIFY; 2121 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 2122 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2123 "2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n", 2124 ctxp->oxid, rc, 2125 atomic_read(&tgtp->rcv_fcp_cmd_in), 2126 atomic_read(&tgtp->rcv_fcp_cmd_out), 2127 atomic_read(&tgtp->xmt_fcp_release)); 2128 lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n", 2129 ctxp->oxid, ctxp->size, ctxp->sid); 2130 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2131 lpfc_nvmet_defer_release(phba, ctxp); 2132 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2133 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); 2134 #endif 2135 } 2136 2137 static void 2138 lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *work) 2139 { 2140 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2141 struct lpfc_nvmet_ctxbuf *ctx_buf = 2142 container_of(work, struct lpfc_nvmet_ctxbuf, defer_work); 2143 2144 lpfc_nvmet_process_rcv_fcp_req(ctx_buf); 2145 #endif 2146 } 2147 2148 static struct lpfc_nvmet_ctxbuf * 2149 lpfc_nvmet_replenish_context(struct lpfc_hba *phba, 2150 struct lpfc_nvmet_ctx_info *current_infop) 2151 { 2152 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2153 struct lpfc_nvmet_ctxbuf *ctx_buf = NULL; 2154 struct lpfc_nvmet_ctx_info *get_infop; 2155 int i; 2156 2157 /* 2158 * The current_infop for the MRQ a NVME command IU was received 2159 * on is empty. Our goal is to replenish this MRQs context 2160 * list from a another CPUs. 2161 * 2162 * First we need to pick a context list to start looking on. 2163 * nvmet_ctx_start_cpu has available context the last time 2164 * we needed to replenish this CPU where nvmet_ctx_next_cpu 2165 * is just the next sequential CPU for this MRQ. 2166 */ 2167 if (current_infop->nvmet_ctx_start_cpu) 2168 get_infop = current_infop->nvmet_ctx_start_cpu; 2169 else 2170 get_infop = current_infop->nvmet_ctx_next_cpu; 2171 2172 for (i = 0; i < phba->sli4_hba.num_possible_cpu; i++) { 2173 if (get_infop == current_infop) { 2174 get_infop = get_infop->nvmet_ctx_next_cpu; 2175 continue; 2176 } 2177 spin_lock(&get_infop->nvmet_ctx_list_lock); 2178 2179 /* Just take the entire context list, if there are any */ 2180 if (get_infop->nvmet_ctx_list_cnt) { 2181 list_splice_init(&get_infop->nvmet_ctx_list, 2182 ¤t_infop->nvmet_ctx_list); 2183 current_infop->nvmet_ctx_list_cnt = 2184 get_infop->nvmet_ctx_list_cnt - 1; 2185 get_infop->nvmet_ctx_list_cnt = 0; 2186 spin_unlock(&get_infop->nvmet_ctx_list_lock); 2187 2188 current_infop->nvmet_ctx_start_cpu = get_infop; 2189 list_remove_head(¤t_infop->nvmet_ctx_list, 2190 ctx_buf, struct lpfc_nvmet_ctxbuf, 2191 list); 2192 return ctx_buf; 2193 } 2194 2195 /* Otherwise, move on to the next CPU for this MRQ */ 2196 spin_unlock(&get_infop->nvmet_ctx_list_lock); 2197 get_infop = get_infop->nvmet_ctx_next_cpu; 2198 } 2199 2200 #endif 2201 /* Nothing found, all contexts for the MRQ are in-flight */ 2202 return NULL; 2203 } 2204 2205 /** 2206 * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer 2207 * @phba: pointer to lpfc hba data structure. 2208 * @idx: relative index of MRQ vector 2209 * @nvmebuf: pointer to lpfc nvme command HBQ data structure. 2210 * @isr_timestamp: in jiffies. 2211 * @cqflag: cq processing information regarding workload. 2212 * 2213 * This routine is used for processing the WQE associated with a unsolicited 2214 * event. It first determines whether there is an existing ndlp that matches 2215 * the DID from the unsolicited WQE. If not, it will create a new one with 2216 * the DID from the unsolicited WQE. The ELS command from the unsolicited 2217 * WQE is then used to invoke the proper routine and to set up proper state 2218 * of the discovery state machine. 2219 **/ 2220 static void 2221 lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba, 2222 uint32_t idx, 2223 struct rqb_dmabuf *nvmebuf, 2224 uint64_t isr_timestamp, 2225 uint8_t cqflag) 2226 { 2227 struct lpfc_nvmet_rcv_ctx *ctxp; 2228 struct lpfc_nvmet_tgtport *tgtp; 2229 struct fc_frame_header *fc_hdr; 2230 struct lpfc_nvmet_ctxbuf *ctx_buf; 2231 struct lpfc_nvmet_ctx_info *current_infop; 2232 uint32_t size, oxid, sid, qno; 2233 unsigned long iflag; 2234 int current_cpu; 2235 2236 if (!IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2237 return; 2238 2239 ctx_buf = NULL; 2240 if (!nvmebuf || !phba->targetport) { 2241 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2242 "6157 NVMET FCP Drop IO\n"); 2243 if (nvmebuf) 2244 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 2245 return; 2246 } 2247 2248 /* 2249 * Get a pointer to the context list for this MRQ based on 2250 * the CPU this MRQ IRQ is associated with. If the CPU association 2251 * changes from our initial assumption, the context list could 2252 * be empty, thus it would need to be replenished with the 2253 * context list from another CPU for this MRQ. 2254 */ 2255 current_cpu = raw_smp_processor_id(); 2256 current_infop = lpfc_get_ctx_list(phba, current_cpu, idx); 2257 spin_lock_irqsave(¤t_infop->nvmet_ctx_list_lock, iflag); 2258 if (current_infop->nvmet_ctx_list_cnt) { 2259 list_remove_head(¤t_infop->nvmet_ctx_list, 2260 ctx_buf, struct lpfc_nvmet_ctxbuf, list); 2261 current_infop->nvmet_ctx_list_cnt--; 2262 } else { 2263 ctx_buf = lpfc_nvmet_replenish_context(phba, current_infop); 2264 } 2265 spin_unlock_irqrestore(¤t_infop->nvmet_ctx_list_lock, iflag); 2266 2267 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 2268 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 2269 size = nvmebuf->bytes_recv; 2270 2271 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2272 if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { 2273 this_cpu_inc(phba->sli4_hba.c_stat->rcv_io); 2274 if (idx != current_cpu) 2275 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2276 "6703 CPU Check rcv: " 2277 "cpu %d expect %d\n", 2278 current_cpu, idx); 2279 } 2280 #endif 2281 2282 lpfc_nvmeio_data(phba, "NVMET FCP RCV: xri x%x sz %d CPU %02x\n", 2283 oxid, size, raw_smp_processor_id()); 2284 2285 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2286 2287 if (!ctx_buf) { 2288 /* Queue this NVME IO to process later */ 2289 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 2290 list_add_tail(&nvmebuf->hbuf.list, 2291 &phba->sli4_hba.lpfc_nvmet_io_wait_list); 2292 phba->sli4_hba.nvmet_io_wait_cnt++; 2293 phba->sli4_hba.nvmet_io_wait_total++; 2294 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 2295 iflag); 2296 2297 /* Post a brand new DMA buffer to RQ */ 2298 qno = nvmebuf->idx; 2299 lpfc_post_rq_buffer( 2300 phba, phba->sli4_hba.nvmet_mrq_hdr[qno], 2301 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); 2302 2303 atomic_inc(&tgtp->defer_ctx); 2304 return; 2305 } 2306 2307 sid = sli4_sid_from_fc_hdr(fc_hdr); 2308 2309 ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context; 2310 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 2311 list_add_tail(&ctxp->list, &phba->sli4_hba.t_active_ctx_list); 2312 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 2313 if (ctxp->state != LPFC_NVMET_STE_FREE) { 2314 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2315 "6414 NVMET Context corrupt %d %d oxid x%x\n", 2316 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 2317 } 2318 ctxp->wqeq = NULL; 2319 ctxp->offset = 0; 2320 ctxp->phba = phba; 2321 ctxp->size = size; 2322 ctxp->oxid = oxid; 2323 ctxp->sid = sid; 2324 ctxp->idx = idx; 2325 ctxp->state = LPFC_NVMET_STE_RCV; 2326 ctxp->entry_cnt = 1; 2327 ctxp->flag = 0; 2328 ctxp->ctxbuf = ctx_buf; 2329 ctxp->rqb_buffer = (void *)nvmebuf; 2330 ctxp->hdwq = NULL; 2331 spin_lock_init(&ctxp->ctxlock); 2332 2333 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2334 if (isr_timestamp) 2335 ctxp->ts_isr_cmd = isr_timestamp; 2336 ctxp->ts_cmd_nvme = 0; 2337 ctxp->ts_nvme_data = 0; 2338 ctxp->ts_data_wqput = 0; 2339 ctxp->ts_isr_data = 0; 2340 ctxp->ts_data_nvme = 0; 2341 ctxp->ts_nvme_status = 0; 2342 ctxp->ts_status_wqput = 0; 2343 ctxp->ts_isr_status = 0; 2344 ctxp->ts_status_nvme = 0; 2345 #endif 2346 2347 atomic_inc(&tgtp->rcv_fcp_cmd_in); 2348 /* check for cq processing load */ 2349 if (!cqflag) { 2350 lpfc_nvmet_process_rcv_fcp_req(ctx_buf); 2351 return; 2352 } 2353 2354 if (!queue_work(phba->wq, &ctx_buf->defer_work)) { 2355 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 2356 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 2357 "6325 Unable to queue work for oxid x%x. " 2358 "FCP Drop IO [x%x x%x x%x]\n", 2359 ctxp->oxid, 2360 atomic_read(&tgtp->rcv_fcp_cmd_in), 2361 atomic_read(&tgtp->rcv_fcp_cmd_out), 2362 atomic_read(&tgtp->xmt_fcp_release)); 2363 2364 spin_lock_irqsave(&ctxp->ctxlock, iflag); 2365 lpfc_nvmet_defer_release(phba, ctxp); 2366 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 2367 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); 2368 } 2369 } 2370 2371 /** 2372 * lpfc_nvmet_unsol_ls_event - Process an unsolicited event from an nvme nport 2373 * @phba: pointer to lpfc hba data structure. 2374 * @pring: pointer to a SLI ring. 2375 * @nvmebuf: pointer to received nvme data structure. 2376 * 2377 * This routine is used to process an unsolicited event received from a SLI 2378 * (Service Level Interface) ring. The actual processing of the data buffer 2379 * associated with the unsolicited event is done by invoking the routine 2380 * lpfc_nvmet_unsol_ls_buffer() after properly set up the buffer from the 2381 * SLI RQ on which the unsolicited event was received. 2382 **/ 2383 void 2384 lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 2385 struct lpfc_iocbq *piocb) 2386 { 2387 struct lpfc_dmabuf *d_buf; 2388 struct hbq_dmabuf *nvmebuf; 2389 2390 d_buf = piocb->context2; 2391 nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf); 2392 2393 if (!nvmebuf) { 2394 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2395 "3015 LS Drop IO\n"); 2396 return; 2397 } 2398 if (phba->nvmet_support == 0) { 2399 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 2400 return; 2401 } 2402 lpfc_nvmet_unsol_ls_buffer(phba, pring, nvmebuf); 2403 } 2404 2405 /** 2406 * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport 2407 * @phba: pointer to lpfc hba data structure. 2408 * @idx: relative index of MRQ vector 2409 * @nvmebuf: pointer to received nvme data structure. 2410 * @isr_timestamp: in jiffies. 2411 * @cqflag: cq processing information regarding workload. 2412 * 2413 * This routine is used to process an unsolicited event received from a SLI 2414 * (Service Level Interface) ring. The actual processing of the data buffer 2415 * associated with the unsolicited event is done by invoking the routine 2416 * lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the 2417 * SLI RQ on which the unsolicited event was received. 2418 **/ 2419 void 2420 lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba, 2421 uint32_t idx, 2422 struct rqb_dmabuf *nvmebuf, 2423 uint64_t isr_timestamp, 2424 uint8_t cqflag) 2425 { 2426 if (!nvmebuf) { 2427 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2428 "3167 NVMET FCP Drop IO\n"); 2429 return; 2430 } 2431 if (phba->nvmet_support == 0) { 2432 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 2433 return; 2434 } 2435 lpfc_nvmet_unsol_fcp_buffer(phba, idx, nvmebuf, isr_timestamp, cqflag); 2436 } 2437 2438 /** 2439 * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure 2440 * @phba: pointer to a host N_Port data structure. 2441 * @ctxp: Context info for NVME LS Request 2442 * @rspbuf: DMA buffer of NVME command. 2443 * @rspsize: size of the NVME command. 2444 * 2445 * This routine is used for allocating a lpfc-WQE data structure from 2446 * the driver lpfc-WQE free-list and prepare the WQE with the parameters 2447 * passed into the routine for discovery state machine to issue an Extended 2448 * Link Service (NVME) commands. It is a generic lpfc-WQE allocation 2449 * and preparation routine that is used by all the discovery state machine 2450 * routines and the NVME command-specific fields will be later set up by 2451 * the individual discovery machine routines after calling this routine 2452 * allocating and preparing a generic WQE data structure. It fills in the 2453 * Buffer Descriptor Entries (BDEs), allocates buffers for both command 2454 * payload and response payload (if expected). The reference count on the 2455 * ndlp is incremented by 1 and the reference to the ndlp is put into 2456 * context1 of the WQE data structure for this WQE to hold the ndlp 2457 * reference for the command's callback function to access later. 2458 * 2459 * Return code 2460 * Pointer to the newly allocated/prepared nvme wqe data structure 2461 * NULL - when nvme wqe data structure allocation/preparation failed 2462 **/ 2463 static struct lpfc_iocbq * 2464 lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba, 2465 struct lpfc_nvmet_rcv_ctx *ctxp, 2466 dma_addr_t rspbuf, uint16_t rspsize) 2467 { 2468 struct lpfc_nodelist *ndlp; 2469 struct lpfc_iocbq *nvmewqe; 2470 union lpfc_wqe128 *wqe; 2471 2472 if (!lpfc_is_link_up(phba)) { 2473 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2474 "6104 NVMET prep LS wqe: link err: " 2475 "NPORT x%x oxid:x%x ste %d\n", 2476 ctxp->sid, ctxp->oxid, ctxp->state); 2477 return NULL; 2478 } 2479 2480 /* Allocate buffer for command wqe */ 2481 nvmewqe = lpfc_sli_get_iocbq(phba); 2482 if (nvmewqe == NULL) { 2483 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2484 "6105 NVMET prep LS wqe: No WQE: " 2485 "NPORT x%x oxid x%x ste %d\n", 2486 ctxp->sid, ctxp->oxid, ctxp->state); 2487 return NULL; 2488 } 2489 2490 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 2491 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 2492 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 2493 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 2494 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2495 "6106 NVMET prep LS wqe: No ndlp: " 2496 "NPORT x%x oxid x%x ste %d\n", 2497 ctxp->sid, ctxp->oxid, ctxp->state); 2498 goto nvme_wqe_free_wqeq_exit; 2499 } 2500 ctxp->wqeq = nvmewqe; 2501 2502 /* prevent preparing wqe with NULL ndlp reference */ 2503 nvmewqe->context1 = lpfc_nlp_get(ndlp); 2504 if (nvmewqe->context1 == NULL) 2505 goto nvme_wqe_free_wqeq_exit; 2506 nvmewqe->context2 = ctxp; 2507 2508 wqe = &nvmewqe->wqe; 2509 memset(wqe, 0, sizeof(union lpfc_wqe)); 2510 2511 /* Words 0 - 2 */ 2512 wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2513 wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize; 2514 wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf)); 2515 wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf)); 2516 2517 /* Word 3 */ 2518 2519 /* Word 4 */ 2520 2521 /* Word 5 */ 2522 bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0); 2523 bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1); 2524 bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0); 2525 bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP); 2526 bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME); 2527 2528 /* Word 6 */ 2529 bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, 2530 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2531 bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag); 2532 2533 /* Word 7 */ 2534 bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com, 2535 CMD_XMIT_SEQUENCE64_WQE); 2536 bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI); 2537 bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3); 2538 bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0); 2539 2540 /* Word 8 */ 2541 wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag; 2542 2543 /* Word 9 */ 2544 bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag); 2545 /* Needs to be set by caller */ 2546 bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid); 2547 2548 /* Word 10 */ 2549 bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1); 2550 bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); 2551 bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com, 2552 LPFC_WQE_LENLOC_WORD12); 2553 bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0); 2554 2555 /* Word 11 */ 2556 bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com, 2557 LPFC_WQE_CQ_ID_DEFAULT); 2558 bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com, 2559 OTHER_COMMAND); 2560 2561 /* Word 12 */ 2562 wqe->xmit_sequence.xmit_len = rspsize; 2563 2564 nvmewqe->retry = 1; 2565 nvmewqe->vport = phba->pport; 2566 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; 2567 nvmewqe->iocb_flag |= LPFC_IO_NVME_LS; 2568 2569 /* Xmit NVMET response to remote NPORT <did> */ 2570 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 2571 "6039 Xmit NVMET LS response to remote " 2572 "NPORT x%x iotag:x%x oxid:x%x size:x%x\n", 2573 ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid, 2574 rspsize); 2575 return nvmewqe; 2576 2577 nvme_wqe_free_wqeq_exit: 2578 nvmewqe->context2 = NULL; 2579 nvmewqe->context3 = NULL; 2580 lpfc_sli_release_iocbq(phba, nvmewqe); 2581 return NULL; 2582 } 2583 2584 2585 static struct lpfc_iocbq * 2586 lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba, 2587 struct lpfc_nvmet_rcv_ctx *ctxp) 2588 { 2589 struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.fcp_req; 2590 struct lpfc_nvmet_tgtport *tgtp; 2591 struct sli4_sge *sgl; 2592 struct lpfc_nodelist *ndlp; 2593 struct lpfc_iocbq *nvmewqe; 2594 struct scatterlist *sgel; 2595 union lpfc_wqe128 *wqe; 2596 struct ulp_bde64 *bde; 2597 dma_addr_t physaddr; 2598 int i, cnt, nsegs; 2599 int do_pbde; 2600 int xc = 1; 2601 2602 if (!lpfc_is_link_up(phba)) { 2603 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2604 "6107 NVMET prep FCP wqe: link err:" 2605 "NPORT x%x oxid x%x ste %d\n", 2606 ctxp->sid, ctxp->oxid, ctxp->state); 2607 return NULL; 2608 } 2609 2610 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 2611 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 2612 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 2613 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 2614 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2615 "6108 NVMET prep FCP wqe: no ndlp: " 2616 "NPORT x%x oxid x%x ste %d\n", 2617 ctxp->sid, ctxp->oxid, ctxp->state); 2618 return NULL; 2619 } 2620 2621 if (rsp->sg_cnt > lpfc_tgttemplate.max_sgl_segments) { 2622 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2623 "6109 NVMET prep FCP wqe: seg cnt err: " 2624 "NPORT x%x oxid x%x ste %d cnt %d\n", 2625 ctxp->sid, ctxp->oxid, ctxp->state, 2626 phba->cfg_nvme_seg_cnt); 2627 return NULL; 2628 } 2629 nsegs = rsp->sg_cnt; 2630 2631 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2632 nvmewqe = ctxp->wqeq; 2633 if (nvmewqe == NULL) { 2634 /* Allocate buffer for command wqe */ 2635 nvmewqe = ctxp->ctxbuf->iocbq; 2636 if (nvmewqe == NULL) { 2637 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2638 "6110 NVMET prep FCP wqe: No " 2639 "WQE: NPORT x%x oxid x%x ste %d\n", 2640 ctxp->sid, ctxp->oxid, ctxp->state); 2641 return NULL; 2642 } 2643 ctxp->wqeq = nvmewqe; 2644 xc = 0; /* create new XRI */ 2645 nvmewqe->sli4_lxritag = NO_XRI; 2646 nvmewqe->sli4_xritag = NO_XRI; 2647 } 2648 2649 /* Sanity check */ 2650 if (((ctxp->state == LPFC_NVMET_STE_RCV) && 2651 (ctxp->entry_cnt == 1)) || 2652 (ctxp->state == LPFC_NVMET_STE_DATA)) { 2653 wqe = &nvmewqe->wqe; 2654 } else { 2655 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2656 "6111 Wrong state NVMET FCP: %d cnt %d\n", 2657 ctxp->state, ctxp->entry_cnt); 2658 return NULL; 2659 } 2660 2661 sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl; 2662 switch (rsp->op) { 2663 case NVMET_FCOP_READDATA: 2664 case NVMET_FCOP_READDATA_RSP: 2665 /* From the tsend template, initialize words 7 - 11 */ 2666 memcpy(&wqe->words[7], 2667 &lpfc_tsend_cmd_template.words[7], 2668 sizeof(uint32_t) * 5); 2669 2670 /* Words 0 - 2 : The first sg segment */ 2671 sgel = &rsp->sg[0]; 2672 physaddr = sg_dma_address(sgel); 2673 wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2674 wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel); 2675 wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr)); 2676 wqe->fcp_tsend.bde.addrHigh = 2677 cpu_to_le32(putPaddrHigh(physaddr)); 2678 2679 /* Word 3 */ 2680 wqe->fcp_tsend.payload_offset_len = 0; 2681 2682 /* Word 4 */ 2683 wqe->fcp_tsend.relative_offset = ctxp->offset; 2684 2685 /* Word 5 */ 2686 wqe->fcp_tsend.reserved = 0; 2687 2688 /* Word 6 */ 2689 bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com, 2690 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2691 bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com, 2692 nvmewqe->sli4_xritag); 2693 2694 /* Word 7 - set ar later */ 2695 2696 /* Word 8 */ 2697 wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag; 2698 2699 /* Word 9 */ 2700 bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag); 2701 bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid); 2702 2703 /* Word 10 - set wqes later, in template xc=1 */ 2704 if (!xc) 2705 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 0); 2706 2707 /* Word 11 - set sup, irsp, irsplen later */ 2708 do_pbde = 0; 2709 2710 /* Word 12 */ 2711 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; 2712 2713 /* Setup 2 SKIP SGEs */ 2714 sgl->addr_hi = 0; 2715 sgl->addr_lo = 0; 2716 sgl->word2 = 0; 2717 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2718 sgl->word2 = cpu_to_le32(sgl->word2); 2719 sgl->sge_len = 0; 2720 sgl++; 2721 sgl->addr_hi = 0; 2722 sgl->addr_lo = 0; 2723 sgl->word2 = 0; 2724 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2725 sgl->word2 = cpu_to_le32(sgl->word2); 2726 sgl->sge_len = 0; 2727 sgl++; 2728 if (rsp->op == NVMET_FCOP_READDATA_RSP) { 2729 atomic_inc(&tgtp->xmt_fcp_read_rsp); 2730 2731 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ 2732 2733 if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) { 2734 if (ndlp->nlp_flag & NLP_SUPPRESS_RSP) 2735 bf_set(wqe_sup, 2736 &wqe->fcp_tsend.wqe_com, 1); 2737 } else { 2738 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1); 2739 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1); 2740 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 2741 ((rsp->rsplen >> 2) - 1)); 2742 memcpy(&wqe->words[16], rsp->rspaddr, 2743 rsp->rsplen); 2744 } 2745 } else { 2746 atomic_inc(&tgtp->xmt_fcp_read); 2747 2748 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ 2749 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0); 2750 } 2751 break; 2752 2753 case NVMET_FCOP_WRITEDATA: 2754 /* From the treceive template, initialize words 3 - 11 */ 2755 memcpy(&wqe->words[3], 2756 &lpfc_treceive_cmd_template.words[3], 2757 sizeof(uint32_t) * 9); 2758 2759 /* Words 0 - 2 : First SGE is skipped, set invalid BDE type */ 2760 wqe->fcp_treceive.bde.tus.f.bdeFlags = LPFC_SGE_TYPE_SKIP; 2761 wqe->fcp_treceive.bde.tus.f.bdeSize = 0; 2762 wqe->fcp_treceive.bde.addrLow = 0; 2763 wqe->fcp_treceive.bde.addrHigh = 0; 2764 2765 /* Word 4 */ 2766 wqe->fcp_treceive.relative_offset = ctxp->offset; 2767 2768 /* Word 6 */ 2769 bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com, 2770 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2771 bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com, 2772 nvmewqe->sli4_xritag); 2773 2774 /* Word 7 */ 2775 2776 /* Word 8 */ 2777 wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag; 2778 2779 /* Word 9 */ 2780 bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag); 2781 bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid); 2782 2783 /* Word 10 - in template xc=1 */ 2784 if (!xc) 2785 bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, 0); 2786 2787 /* Word 11 - set pbde later */ 2788 if (phba->cfg_enable_pbde) { 2789 do_pbde = 1; 2790 } else { 2791 bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 0); 2792 do_pbde = 0; 2793 } 2794 2795 /* Word 12 */ 2796 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; 2797 2798 /* Setup 2 SKIP SGEs */ 2799 sgl->addr_hi = 0; 2800 sgl->addr_lo = 0; 2801 sgl->word2 = 0; 2802 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2803 sgl->word2 = cpu_to_le32(sgl->word2); 2804 sgl->sge_len = 0; 2805 sgl++; 2806 sgl->addr_hi = 0; 2807 sgl->addr_lo = 0; 2808 sgl->word2 = 0; 2809 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2810 sgl->word2 = cpu_to_le32(sgl->word2); 2811 sgl->sge_len = 0; 2812 sgl++; 2813 atomic_inc(&tgtp->xmt_fcp_write); 2814 break; 2815 2816 case NVMET_FCOP_RSP: 2817 /* From the treceive template, initialize words 4 - 11 */ 2818 memcpy(&wqe->words[4], 2819 &lpfc_trsp_cmd_template.words[4], 2820 sizeof(uint32_t) * 8); 2821 2822 /* Words 0 - 2 */ 2823 physaddr = rsp->rspdma; 2824 wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2825 wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen; 2826 wqe->fcp_trsp.bde.addrLow = 2827 cpu_to_le32(putPaddrLow(physaddr)); 2828 wqe->fcp_trsp.bde.addrHigh = 2829 cpu_to_le32(putPaddrHigh(physaddr)); 2830 2831 /* Word 3 */ 2832 wqe->fcp_trsp.response_len = rsp->rsplen; 2833 2834 /* Word 6 */ 2835 bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com, 2836 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2837 bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com, 2838 nvmewqe->sli4_xritag); 2839 2840 /* Word 7 */ 2841 2842 /* Word 8 */ 2843 wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag; 2844 2845 /* Word 9 */ 2846 bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag); 2847 bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid); 2848 2849 /* Word 10 */ 2850 if (xc) 2851 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 1); 2852 2853 /* Word 11 */ 2854 /* In template wqes=0 irsp=0 irsplen=0 - good response */ 2855 if (rsp->rsplen != LPFC_NVMET_SUCCESS_LEN) { 2856 /* Bad response - embed it */ 2857 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1); 2858 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1); 2859 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 2860 ((rsp->rsplen >> 2) - 1)); 2861 memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen); 2862 } 2863 do_pbde = 0; 2864 2865 /* Word 12 */ 2866 wqe->fcp_trsp.rsvd_12_15[0] = 0; 2867 2868 /* Use rspbuf, NOT sg list */ 2869 nsegs = 0; 2870 sgl->word2 = 0; 2871 atomic_inc(&tgtp->xmt_fcp_rsp); 2872 break; 2873 2874 default: 2875 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2876 "6064 Unknown Rsp Op %d\n", 2877 rsp->op); 2878 return NULL; 2879 } 2880 2881 nvmewqe->retry = 1; 2882 nvmewqe->vport = phba->pport; 2883 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; 2884 nvmewqe->context1 = ndlp; 2885 2886 for_each_sg(rsp->sg, sgel, nsegs, i) { 2887 physaddr = sg_dma_address(sgel); 2888 cnt = sg_dma_len(sgel); 2889 sgl->addr_hi = putPaddrHigh(physaddr); 2890 sgl->addr_lo = putPaddrLow(physaddr); 2891 sgl->word2 = 0; 2892 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2893 bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset); 2894 if ((i+1) == rsp->sg_cnt) 2895 bf_set(lpfc_sli4_sge_last, sgl, 1); 2896 sgl->word2 = cpu_to_le32(sgl->word2); 2897 sgl->sge_len = cpu_to_le32(cnt); 2898 if (i == 0) { 2899 bde = (struct ulp_bde64 *)&wqe->words[13]; 2900 if (do_pbde) { 2901 /* Words 13-15 (PBDE) */ 2902 bde->addrLow = sgl->addr_lo; 2903 bde->addrHigh = sgl->addr_hi; 2904 bde->tus.f.bdeSize = 2905 le32_to_cpu(sgl->sge_len); 2906 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2907 bde->tus.w = cpu_to_le32(bde->tus.w); 2908 } else { 2909 memset(bde, 0, sizeof(struct ulp_bde64)); 2910 } 2911 } 2912 sgl++; 2913 ctxp->offset += cnt; 2914 } 2915 ctxp->state = LPFC_NVMET_STE_DATA; 2916 ctxp->entry_cnt++; 2917 return nvmewqe; 2918 } 2919 2920 /** 2921 * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS 2922 * @phba: Pointer to HBA context object. 2923 * @cmdwqe: Pointer to driver command WQE object. 2924 * @wcqe: Pointer to driver response CQE object. 2925 * 2926 * The function is called from SLI ring event handler with no 2927 * lock held. This function is the completion handler for NVME ABTS for FCP cmds 2928 * The function frees memory resources used for the NVME commands. 2929 **/ 2930 static void 2931 lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 2932 struct lpfc_wcqe_complete *wcqe) 2933 { 2934 struct lpfc_nvmet_rcv_ctx *ctxp; 2935 struct lpfc_nvmet_tgtport *tgtp; 2936 uint32_t result; 2937 unsigned long flags; 2938 bool released = false; 2939 2940 ctxp = cmdwqe->context2; 2941 result = wcqe->parameter; 2942 2943 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2944 if (ctxp->flag & LPFC_NVMET_ABORT_OP) 2945 atomic_inc(&tgtp->xmt_fcp_abort_cmpl); 2946 2947 spin_lock_irqsave(&ctxp->ctxlock, flags); 2948 ctxp->state = LPFC_NVMET_STE_DONE; 2949 2950 /* Check if we already received a free context call 2951 * and we have completed processing an abort situation. 2952 */ 2953 if ((ctxp->flag & LPFC_NVMET_CTX_RLS) && 2954 !(ctxp->flag & LPFC_NVMET_XBUSY)) { 2955 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 2956 list_del_init(&ctxp->list); 2957 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 2958 released = true; 2959 } 2960 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 2961 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 2962 atomic_inc(&tgtp->xmt_abort_rsp); 2963 2964 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2965 "6165 ABORT cmpl: oxid x%x flg x%x (%d) " 2966 "WCQE: %08x %08x %08x %08x\n", 2967 ctxp->oxid, ctxp->flag, released, 2968 wcqe->word0, wcqe->total_data_placed, 2969 result, wcqe->word3); 2970 2971 cmdwqe->context2 = NULL; 2972 cmdwqe->context3 = NULL; 2973 /* 2974 * if transport has released ctx, then can reuse it. Otherwise, 2975 * will be recycled by transport release call. 2976 */ 2977 if (released) 2978 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 2979 2980 /* This is the iocbq for the abort, not the command */ 2981 lpfc_sli_release_iocbq(phba, cmdwqe); 2982 2983 /* Since iaab/iaar are NOT set, there is no work left. 2984 * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted 2985 * should have been called already. 2986 */ 2987 } 2988 2989 /** 2990 * lpfc_nvmet_unsol_fcp_abort_cmp - Completion handler for ABTS 2991 * @phba: Pointer to HBA context object. 2992 * @cmdwqe: Pointer to driver command WQE object. 2993 * @wcqe: Pointer to driver response CQE object. 2994 * 2995 * The function is called from SLI ring event handler with no 2996 * lock held. This function is the completion handler for NVME ABTS for FCP cmds 2997 * The function frees memory resources used for the NVME commands. 2998 **/ 2999 static void 3000 lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3001 struct lpfc_wcqe_complete *wcqe) 3002 { 3003 struct lpfc_nvmet_rcv_ctx *ctxp; 3004 struct lpfc_nvmet_tgtport *tgtp; 3005 unsigned long flags; 3006 uint32_t result; 3007 bool released = false; 3008 3009 ctxp = cmdwqe->context2; 3010 result = wcqe->parameter; 3011 3012 if (!ctxp) { 3013 /* if context is clear, related io alrady complete */ 3014 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3015 "6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n", 3016 wcqe->word0, wcqe->total_data_placed, 3017 result, wcqe->word3); 3018 return; 3019 } 3020 3021 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3022 spin_lock_irqsave(&ctxp->ctxlock, flags); 3023 if (ctxp->flag & LPFC_NVMET_ABORT_OP) 3024 atomic_inc(&tgtp->xmt_fcp_abort_cmpl); 3025 3026 /* Sanity check */ 3027 if (ctxp->state != LPFC_NVMET_STE_ABORT) { 3028 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3029 "6112 ABTS Wrong state:%d oxid x%x\n", 3030 ctxp->state, ctxp->oxid); 3031 } 3032 3033 /* Check if we already received a free context call 3034 * and we have completed processing an abort situation. 3035 */ 3036 ctxp->state = LPFC_NVMET_STE_DONE; 3037 if ((ctxp->flag & LPFC_NVMET_CTX_RLS) && 3038 !(ctxp->flag & LPFC_NVMET_XBUSY)) { 3039 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3040 list_del_init(&ctxp->list); 3041 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3042 released = true; 3043 } 3044 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3045 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3046 atomic_inc(&tgtp->xmt_abort_rsp); 3047 3048 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3049 "6316 ABTS cmpl oxid x%x flg x%x (%x) " 3050 "WCQE: %08x %08x %08x %08x\n", 3051 ctxp->oxid, ctxp->flag, released, 3052 wcqe->word0, wcqe->total_data_placed, 3053 result, wcqe->word3); 3054 3055 cmdwqe->context2 = NULL; 3056 cmdwqe->context3 = NULL; 3057 /* 3058 * if transport has released ctx, then can reuse it. Otherwise, 3059 * will be recycled by transport release call. 3060 */ 3061 if (released) 3062 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3063 3064 /* Since iaab/iaar are NOT set, there is no work left. 3065 * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted 3066 * should have been called already. 3067 */ 3068 } 3069 3070 /** 3071 * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS 3072 * @phba: Pointer to HBA context object. 3073 * @cmdwqe: Pointer to driver command WQE object. 3074 * @wcqe: Pointer to driver response CQE object. 3075 * 3076 * The function is called from SLI ring event handler with no 3077 * lock held. This function is the completion handler for NVME ABTS for LS cmds 3078 * The function frees memory resources used for the NVME commands. 3079 **/ 3080 static void 3081 lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3082 struct lpfc_wcqe_complete *wcqe) 3083 { 3084 struct lpfc_nvmet_rcv_ctx *ctxp; 3085 struct lpfc_nvmet_tgtport *tgtp; 3086 uint32_t result; 3087 3088 ctxp = cmdwqe->context2; 3089 result = wcqe->parameter; 3090 3091 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3092 atomic_inc(&tgtp->xmt_ls_abort_cmpl); 3093 3094 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3095 "6083 Abort cmpl: ctx x%px WCQE:%08x %08x %08x %08x\n", 3096 ctxp, wcqe->word0, wcqe->total_data_placed, 3097 result, wcqe->word3); 3098 3099 if (!ctxp) { 3100 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3101 "6415 NVMET LS Abort No ctx: WCQE: " 3102 "%08x %08x %08x %08x\n", 3103 wcqe->word0, wcqe->total_data_placed, 3104 result, wcqe->word3); 3105 3106 lpfc_sli_release_iocbq(phba, cmdwqe); 3107 return; 3108 } 3109 3110 if (ctxp->state != LPFC_NVMET_STE_LS_ABORT) { 3111 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3112 "6416 NVMET LS abort cmpl state mismatch: " 3113 "oxid x%x: %d %d\n", 3114 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 3115 } 3116 3117 cmdwqe->context2 = NULL; 3118 cmdwqe->context3 = NULL; 3119 lpfc_sli_release_iocbq(phba, cmdwqe); 3120 kfree(ctxp); 3121 } 3122 3123 static int 3124 lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba, 3125 struct lpfc_nvmet_rcv_ctx *ctxp, 3126 uint32_t sid, uint16_t xri) 3127 { 3128 struct lpfc_nvmet_tgtport *tgtp; 3129 struct lpfc_iocbq *abts_wqeq; 3130 union lpfc_wqe128 *wqe_abts; 3131 struct lpfc_nodelist *ndlp; 3132 3133 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3134 "6067 ABTS: sid %x xri x%x/x%x\n", 3135 sid, xri, ctxp->wqeq->sli4_xritag); 3136 3137 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3138 3139 ndlp = lpfc_findnode_did(phba->pport, sid); 3140 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 3141 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 3142 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 3143 atomic_inc(&tgtp->xmt_abort_rsp_error); 3144 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3145 "6134 Drop ABTS - wrong NDLP state x%x.\n", 3146 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE); 3147 3148 /* No failure to an ABTS request. */ 3149 return 0; 3150 } 3151 3152 abts_wqeq = ctxp->wqeq; 3153 wqe_abts = &abts_wqeq->wqe; 3154 3155 /* 3156 * Since we zero the whole WQE, we need to ensure we set the WQE fields 3157 * that were initialized in lpfc_sli4_nvmet_alloc. 3158 */ 3159 memset(wqe_abts, 0, sizeof(union lpfc_wqe)); 3160 3161 /* Word 5 */ 3162 bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0); 3163 bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1); 3164 bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0); 3165 bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS); 3166 bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS); 3167 3168 /* Word 6 */ 3169 bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com, 3170 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 3171 bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com, 3172 abts_wqeq->sli4_xritag); 3173 3174 /* Word 7 */ 3175 bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com, 3176 CMD_XMIT_SEQUENCE64_WQE); 3177 bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI); 3178 bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3); 3179 bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0); 3180 3181 /* Word 8 */ 3182 wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag; 3183 3184 /* Word 9 */ 3185 bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag); 3186 /* Needs to be set by caller */ 3187 bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri); 3188 3189 /* Word 10 */ 3190 bf_set(wqe_dbde, &wqe_abts->xmit_sequence.wqe_com, 1); 3191 bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); 3192 bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com, 3193 LPFC_WQE_LENLOC_WORD12); 3194 bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0); 3195 bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0); 3196 3197 /* Word 11 */ 3198 bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com, 3199 LPFC_WQE_CQ_ID_DEFAULT); 3200 bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com, 3201 OTHER_COMMAND); 3202 3203 abts_wqeq->vport = phba->pport; 3204 abts_wqeq->context1 = ndlp; 3205 abts_wqeq->context2 = ctxp; 3206 abts_wqeq->context3 = NULL; 3207 abts_wqeq->rsvd2 = 0; 3208 /* hba_wqidx should already be setup from command we are aborting */ 3209 abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR; 3210 abts_wqeq->iocb.ulpLe = 1; 3211 3212 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3213 "6069 Issue ABTS to xri x%x reqtag x%x\n", 3214 xri, abts_wqeq->iotag); 3215 return 1; 3216 } 3217 3218 static int 3219 lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba, 3220 struct lpfc_nvmet_rcv_ctx *ctxp, 3221 uint32_t sid, uint16_t xri) 3222 { 3223 struct lpfc_nvmet_tgtport *tgtp; 3224 struct lpfc_iocbq *abts_wqeq; 3225 struct lpfc_nodelist *ndlp; 3226 unsigned long flags; 3227 u8 opt; 3228 int rc; 3229 3230 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3231 if (!ctxp->wqeq) { 3232 ctxp->wqeq = ctxp->ctxbuf->iocbq; 3233 ctxp->wqeq->hba_wqidx = 0; 3234 } 3235 3236 ndlp = lpfc_findnode_did(phba->pport, sid); 3237 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 3238 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 3239 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 3240 atomic_inc(&tgtp->xmt_abort_rsp_error); 3241 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3242 "6160 Drop ABORT - wrong NDLP state x%x.\n", 3243 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE); 3244 3245 /* No failure to an ABTS request. */ 3246 spin_lock_irqsave(&ctxp->ctxlock, flags); 3247 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3248 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3249 return 0; 3250 } 3251 3252 /* Issue ABTS for this WQE based on iotag */ 3253 ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba); 3254 spin_lock_irqsave(&ctxp->ctxlock, flags); 3255 if (!ctxp->abort_wqeq) { 3256 atomic_inc(&tgtp->xmt_abort_rsp_error); 3257 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3258 "6161 ABORT failed: No wqeqs: " 3259 "xri: x%x\n", ctxp->oxid); 3260 /* No failure to an ABTS request. */ 3261 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3262 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3263 return 0; 3264 } 3265 abts_wqeq = ctxp->abort_wqeq; 3266 ctxp->state = LPFC_NVMET_STE_ABORT; 3267 opt = (ctxp->flag & LPFC_NVMET_ABTS_RCV) ? INHIBIT_ABORT : 0; 3268 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3269 3270 /* Announce entry to new IO submit field. */ 3271 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3272 "6162 ABORT Request to rport DID x%06x " 3273 "for xri x%x x%x\n", 3274 ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag); 3275 3276 /* If the hba is getting reset, this flag is set. It is 3277 * cleared when the reset is complete and rings reestablished. 3278 */ 3279 spin_lock_irqsave(&phba->hbalock, flags); 3280 /* driver queued commands are in process of being flushed */ 3281 if (phba->hba_flag & HBA_IOQ_FLUSH) { 3282 spin_unlock_irqrestore(&phba->hbalock, flags); 3283 atomic_inc(&tgtp->xmt_abort_rsp_error); 3284 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 3285 "6163 Driver in reset cleanup - flushing " 3286 "NVME Req now. hba_flag x%x oxid x%x\n", 3287 phba->hba_flag, ctxp->oxid); 3288 lpfc_sli_release_iocbq(phba, abts_wqeq); 3289 spin_lock_irqsave(&ctxp->ctxlock, flags); 3290 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3291 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3292 return 0; 3293 } 3294 3295 /* Outstanding abort is in progress */ 3296 if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) { 3297 spin_unlock_irqrestore(&phba->hbalock, flags); 3298 atomic_inc(&tgtp->xmt_abort_rsp_error); 3299 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 3300 "6164 Outstanding NVME I/O Abort Request " 3301 "still pending on oxid x%x\n", 3302 ctxp->oxid); 3303 lpfc_sli_release_iocbq(phba, abts_wqeq); 3304 spin_lock_irqsave(&ctxp->ctxlock, flags); 3305 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3306 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3307 return 0; 3308 } 3309 3310 /* Ready - mark outstanding as aborted by driver. */ 3311 abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED; 3312 3313 lpfc_nvme_prep_abort_wqe(abts_wqeq, ctxp->wqeq->sli4_xritag, opt); 3314 3315 /* ABTS WQE must go to the same WQ as the WQE to be aborted */ 3316 abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx; 3317 abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp; 3318 abts_wqeq->iocb_cmpl = NULL; 3319 abts_wqeq->iocb_flag |= LPFC_IO_NVME; 3320 abts_wqeq->context2 = ctxp; 3321 abts_wqeq->vport = phba->pport; 3322 if (!ctxp->hdwq) 3323 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx]; 3324 3325 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3326 spin_unlock_irqrestore(&phba->hbalock, flags); 3327 if (rc == WQE_SUCCESS) { 3328 atomic_inc(&tgtp->xmt_abort_sol); 3329 return 0; 3330 } 3331 3332 atomic_inc(&tgtp->xmt_abort_rsp_error); 3333 spin_lock_irqsave(&ctxp->ctxlock, flags); 3334 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3335 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3336 lpfc_sli_release_iocbq(phba, abts_wqeq); 3337 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3338 "6166 Failed ABORT issue_wqe with status x%x " 3339 "for oxid x%x.\n", 3340 rc, ctxp->oxid); 3341 return 1; 3342 } 3343 3344 static int 3345 lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba, 3346 struct lpfc_nvmet_rcv_ctx *ctxp, 3347 uint32_t sid, uint16_t xri) 3348 { 3349 struct lpfc_nvmet_tgtport *tgtp; 3350 struct lpfc_iocbq *abts_wqeq; 3351 unsigned long flags; 3352 bool released = false; 3353 int rc; 3354 3355 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3356 if (!ctxp->wqeq) { 3357 ctxp->wqeq = ctxp->ctxbuf->iocbq; 3358 ctxp->wqeq->hba_wqidx = 0; 3359 } 3360 3361 if (ctxp->state == LPFC_NVMET_STE_FREE) { 3362 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3363 "6417 NVMET ABORT ctx freed %d %d oxid x%x\n", 3364 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 3365 rc = WQE_BUSY; 3366 goto aerr; 3367 } 3368 ctxp->state = LPFC_NVMET_STE_ABORT; 3369 ctxp->entry_cnt++; 3370 rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri); 3371 if (rc == 0) 3372 goto aerr; 3373 3374 spin_lock_irqsave(&phba->hbalock, flags); 3375 abts_wqeq = ctxp->wqeq; 3376 abts_wqeq->wqe_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp; 3377 abts_wqeq->iocb_cmpl = NULL; 3378 abts_wqeq->iocb_flag |= LPFC_IO_NVMET; 3379 if (!ctxp->hdwq) 3380 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx]; 3381 3382 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3383 spin_unlock_irqrestore(&phba->hbalock, flags); 3384 if (rc == WQE_SUCCESS) { 3385 return 0; 3386 } 3387 3388 aerr: 3389 spin_lock_irqsave(&ctxp->ctxlock, flags); 3390 if (ctxp->flag & LPFC_NVMET_CTX_RLS) { 3391 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3392 list_del_init(&ctxp->list); 3393 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3394 released = true; 3395 } 3396 ctxp->flag &= ~(LPFC_NVMET_ABORT_OP | LPFC_NVMET_CTX_RLS); 3397 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3398 3399 atomic_inc(&tgtp->xmt_abort_rsp_error); 3400 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3401 "6135 Failed to Issue ABTS for oxid x%x. Status x%x " 3402 "(%x)\n", 3403 ctxp->oxid, rc, released); 3404 if (released) 3405 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3406 return 1; 3407 } 3408 3409 static int 3410 lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba, 3411 struct lpfc_nvmet_rcv_ctx *ctxp, 3412 uint32_t sid, uint16_t xri) 3413 { 3414 struct lpfc_nvmet_tgtport *tgtp; 3415 struct lpfc_iocbq *abts_wqeq; 3416 unsigned long flags; 3417 int rc; 3418 3419 if ((ctxp->state == LPFC_NVMET_STE_LS_RCV && ctxp->entry_cnt == 1) || 3420 (ctxp->state == LPFC_NVMET_STE_LS_RSP && ctxp->entry_cnt == 2)) { 3421 ctxp->state = LPFC_NVMET_STE_LS_ABORT; 3422 ctxp->entry_cnt++; 3423 } else { 3424 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3425 "6418 NVMET LS abort state mismatch " 3426 "IO x%x: %d %d\n", 3427 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 3428 ctxp->state = LPFC_NVMET_STE_LS_ABORT; 3429 } 3430 3431 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3432 if (!ctxp->wqeq) { 3433 /* Issue ABTS for this WQE based on iotag */ 3434 ctxp->wqeq = lpfc_sli_get_iocbq(phba); 3435 if (!ctxp->wqeq) { 3436 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3437 "6068 Abort failed: No wqeqs: " 3438 "xri: x%x\n", xri); 3439 /* No failure to an ABTS request. */ 3440 kfree(ctxp); 3441 return 0; 3442 } 3443 } 3444 abts_wqeq = ctxp->wqeq; 3445 3446 if (lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri) == 0) { 3447 rc = WQE_BUSY; 3448 goto out; 3449 } 3450 3451 spin_lock_irqsave(&phba->hbalock, flags); 3452 abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp; 3453 abts_wqeq->iocb_cmpl = NULL; 3454 abts_wqeq->iocb_flag |= LPFC_IO_NVME_LS; 3455 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3456 spin_unlock_irqrestore(&phba->hbalock, flags); 3457 if (rc == WQE_SUCCESS) { 3458 atomic_inc(&tgtp->xmt_abort_unsol); 3459 return 0; 3460 } 3461 out: 3462 atomic_inc(&tgtp->xmt_abort_rsp_error); 3463 abts_wqeq->context2 = NULL; 3464 abts_wqeq->context3 = NULL; 3465 lpfc_sli_release_iocbq(phba, abts_wqeq); 3466 kfree(ctxp); 3467 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3468 "6056 Failed to Issue ABTS. Status x%x\n", rc); 3469 return 0; 3470 } 3471