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 uint32_t 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->cpucheck_on & LPFC_CHECK_NVMET_IO) { 818 id = raw_smp_processor_id(); 819 if (id < LPFC_CHECK_CPU_CNT) { 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 phba->sli4_hba.hdwq[rsp->hwqid].cpucheck_cmpl_io[id]++; 826 } 827 } 828 #endif 829 } 830 831 static int 832 lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport, 833 struct nvmefc_tgt_ls_req *rsp) 834 { 835 struct lpfc_nvmet_rcv_ctx *ctxp = 836 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.ls_req); 837 struct lpfc_hba *phba = ctxp->phba; 838 struct hbq_dmabuf *nvmebuf = 839 (struct hbq_dmabuf *)ctxp->rqb_buffer; 840 struct lpfc_iocbq *nvmewqeq; 841 struct lpfc_nvmet_tgtport *nvmep = tgtport->private; 842 struct lpfc_dmabuf dmabuf; 843 struct ulp_bde64 bpl; 844 int rc; 845 846 if (phba->pport->load_flag & FC_UNLOADING) 847 return -ENODEV; 848 849 if (phba->pport->load_flag & FC_UNLOADING) 850 return -ENODEV; 851 852 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 853 "6023 NVMET LS rsp oxid x%x\n", ctxp->oxid); 854 855 if ((ctxp->state != LPFC_NVMET_STE_LS_RCV) || 856 (ctxp->entry_cnt != 1)) { 857 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 858 "6412 NVMET LS rsp state mismatch " 859 "oxid x%x: %d %d\n", 860 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 861 } 862 ctxp->state = LPFC_NVMET_STE_LS_RSP; 863 ctxp->entry_cnt++; 864 865 nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma, 866 rsp->rsplen); 867 if (nvmewqeq == NULL) { 868 atomic_inc(&nvmep->xmt_ls_drop); 869 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 870 "6150 LS Drop IO x%x: Prep\n", 871 ctxp->oxid); 872 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 873 atomic_inc(&nvmep->xmt_ls_abort); 874 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, 875 ctxp->sid, ctxp->oxid); 876 return -ENOMEM; 877 } 878 879 /* Save numBdes for bpl2sgl */ 880 nvmewqeq->rsvd2 = 1; 881 nvmewqeq->hba_wqidx = 0; 882 nvmewqeq->context3 = &dmabuf; 883 dmabuf.virt = &bpl; 884 bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow; 885 bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh; 886 bpl.tus.f.bdeSize = rsp->rsplen; 887 bpl.tus.f.bdeFlags = 0; 888 bpl.tus.w = le32_to_cpu(bpl.tus.w); 889 890 nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp; 891 nvmewqeq->iocb_cmpl = NULL; 892 nvmewqeq->context2 = ctxp; 893 894 lpfc_nvmeio_data(phba, "NVMET LS RESP: xri x%x wqidx x%x len x%x\n", 895 ctxp->oxid, nvmewqeq->hba_wqidx, rsp->rsplen); 896 897 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 898 if (rc == WQE_SUCCESS) { 899 /* 900 * Okay to repost buffer here, but wait till cmpl 901 * before freeing ctxp and iocbq. 902 */ 903 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 904 atomic_inc(&nvmep->xmt_ls_rsp); 905 return 0; 906 } 907 /* Give back resources */ 908 atomic_inc(&nvmep->xmt_ls_drop); 909 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 910 "6151 LS Drop IO x%x: Issue %d\n", 911 ctxp->oxid, rc); 912 913 lpfc_nlp_put(nvmewqeq->context1); 914 915 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 916 atomic_inc(&nvmep->xmt_ls_abort); 917 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); 918 return -ENXIO; 919 } 920 921 static int 922 lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport, 923 struct nvmefc_tgt_fcp_req *rsp) 924 { 925 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 926 struct lpfc_nvmet_rcv_ctx *ctxp = 927 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 928 struct lpfc_hba *phba = ctxp->phba; 929 struct lpfc_queue *wq; 930 struct lpfc_iocbq *nvmewqeq; 931 struct lpfc_sli_ring *pring; 932 unsigned long iflags; 933 int rc; 934 935 if (phba->pport->load_flag & FC_UNLOADING) { 936 rc = -ENODEV; 937 goto aerr; 938 } 939 940 if (phba->pport->load_flag & FC_UNLOADING) { 941 rc = -ENODEV; 942 goto aerr; 943 } 944 945 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 946 if (ctxp->ts_cmd_nvme) { 947 if (rsp->op == NVMET_FCOP_RSP) 948 ctxp->ts_nvme_status = ktime_get_ns(); 949 else 950 ctxp->ts_nvme_data = ktime_get_ns(); 951 } 952 953 /* Setup the hdw queue if not already set */ 954 if (!ctxp->hdwq) 955 ctxp->hdwq = &phba->sli4_hba.hdwq[rsp->hwqid]; 956 957 if (phba->cpucheck_on & LPFC_CHECK_NVMET_IO) { 958 int id = raw_smp_processor_id(); 959 if (id < LPFC_CHECK_CPU_CNT) { 960 if (rsp->hwqid != id) 961 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 962 "6705 CPU Check OP: " 963 "cpu %d expect %d\n", 964 id, rsp->hwqid); 965 phba->sli4_hba.hdwq[rsp->hwqid].cpucheck_xmt_io[id]++; 966 } 967 ctxp->cpu = id; /* Setup cpu for cmpl check */ 968 } 969 #endif 970 971 /* Sanity check */ 972 if ((ctxp->flag & LPFC_NVMET_ABTS_RCV) || 973 (ctxp->state == LPFC_NVMET_STE_ABORT)) { 974 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 975 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 976 "6102 IO oxid x%x aborted\n", 977 ctxp->oxid); 978 rc = -ENXIO; 979 goto aerr; 980 } 981 982 nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp); 983 if (nvmewqeq == NULL) { 984 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 985 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 986 "6152 FCP Drop IO x%x: Prep\n", 987 ctxp->oxid); 988 rc = -ENXIO; 989 goto aerr; 990 } 991 992 nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp; 993 nvmewqeq->iocb_cmpl = NULL; 994 nvmewqeq->context2 = ctxp; 995 nvmewqeq->iocb_flag |= LPFC_IO_NVMET; 996 ctxp->wqeq->hba_wqidx = rsp->hwqid; 997 998 lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n", 999 ctxp->oxid, rsp->op, rsp->rsplen); 1000 1001 ctxp->flag |= LPFC_NVMET_IO_INP; 1002 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 1003 if (rc == WQE_SUCCESS) { 1004 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1005 if (!ctxp->ts_cmd_nvme) 1006 return 0; 1007 if (rsp->op == NVMET_FCOP_RSP) 1008 ctxp->ts_status_wqput = ktime_get_ns(); 1009 else 1010 ctxp->ts_data_wqput = ktime_get_ns(); 1011 #endif 1012 return 0; 1013 } 1014 1015 if (rc == -EBUSY) { 1016 /* 1017 * WQ was full, so queue nvmewqeq to be sent after 1018 * WQE release CQE 1019 */ 1020 ctxp->flag |= LPFC_NVMET_DEFER_WQFULL; 1021 wq = ctxp->hdwq->io_wq; 1022 pring = wq->pring; 1023 spin_lock_irqsave(&pring->ring_lock, iflags); 1024 list_add_tail(&nvmewqeq->list, &wq->wqfull_list); 1025 wq->q_flag |= HBA_NVMET_WQFULL; 1026 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1027 atomic_inc(&lpfc_nvmep->defer_wqfull); 1028 return 0; 1029 } 1030 1031 /* Give back resources */ 1032 atomic_inc(&lpfc_nvmep->xmt_fcp_drop); 1033 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1034 "6153 FCP Drop IO x%x: Issue: %d\n", 1035 ctxp->oxid, rc); 1036 1037 ctxp->wqeq->hba_wqidx = 0; 1038 nvmewqeq->context2 = NULL; 1039 nvmewqeq->context3 = NULL; 1040 rc = -EBUSY; 1041 aerr: 1042 return rc; 1043 } 1044 1045 static void 1046 lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport) 1047 { 1048 struct lpfc_nvmet_tgtport *tport = targetport->private; 1049 1050 /* release any threads waiting for the unreg to complete */ 1051 if (tport->phba->targetport) 1052 complete(tport->tport_unreg_cmp); 1053 } 1054 1055 static void 1056 lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport, 1057 struct nvmefc_tgt_fcp_req *req) 1058 { 1059 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1060 struct lpfc_nvmet_rcv_ctx *ctxp = 1061 container_of(req, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1062 struct lpfc_hba *phba = ctxp->phba; 1063 struct lpfc_queue *wq; 1064 unsigned long flags; 1065 1066 if (phba->pport->load_flag & FC_UNLOADING) 1067 return; 1068 1069 if (phba->pport->load_flag & FC_UNLOADING) 1070 return; 1071 1072 if (!ctxp->hdwq) 1073 ctxp->hdwq = &phba->sli4_hba.hdwq[0]; 1074 1075 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1076 "6103 NVMET Abort op: oxid x%x flg x%x ste %d\n", 1077 ctxp->oxid, ctxp->flag, ctxp->state); 1078 1079 lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n", 1080 ctxp->oxid, ctxp->flag, ctxp->state); 1081 1082 atomic_inc(&lpfc_nvmep->xmt_fcp_abort); 1083 1084 spin_lock_irqsave(&ctxp->ctxlock, flags); 1085 1086 /* Since iaab/iaar are NOT set, we need to check 1087 * if the firmware is in process of aborting IO 1088 */ 1089 if (ctxp->flag & (LPFC_NVMET_XBUSY | LPFC_NVMET_ABORT_OP)) { 1090 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1091 return; 1092 } 1093 ctxp->flag |= LPFC_NVMET_ABORT_OP; 1094 1095 if (ctxp->flag & LPFC_NVMET_DEFER_WQFULL) { 1096 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1097 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1098 ctxp->oxid); 1099 wq = ctxp->hdwq->io_wq; 1100 lpfc_nvmet_wqfull_flush(phba, wq, ctxp); 1101 return; 1102 } 1103 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1104 1105 /* An state of LPFC_NVMET_STE_RCV means we have just received 1106 * the NVME command and have not started processing it. 1107 * (by issuing any IO WQEs on this exchange yet) 1108 */ 1109 if (ctxp->state == LPFC_NVMET_STE_RCV) 1110 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1111 ctxp->oxid); 1112 else 1113 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1114 ctxp->oxid); 1115 } 1116 1117 static void 1118 lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport, 1119 struct nvmefc_tgt_fcp_req *rsp) 1120 { 1121 struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; 1122 struct lpfc_nvmet_rcv_ctx *ctxp = 1123 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1124 struct lpfc_hba *phba = ctxp->phba; 1125 unsigned long flags; 1126 bool aborting = false; 1127 1128 spin_lock_irqsave(&ctxp->ctxlock, flags); 1129 if (ctxp->flag & LPFC_NVMET_XBUSY) 1130 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1131 "6027 NVMET release with XBUSY flag x%x" 1132 " oxid x%x\n", 1133 ctxp->flag, ctxp->oxid); 1134 else if (ctxp->state != LPFC_NVMET_STE_DONE && 1135 ctxp->state != LPFC_NVMET_STE_ABORT) 1136 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1137 "6413 NVMET release bad state %d %d oxid x%x\n", 1138 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 1139 1140 if ((ctxp->flag & LPFC_NVMET_ABORT_OP) || 1141 (ctxp->flag & LPFC_NVMET_XBUSY)) { 1142 aborting = true; 1143 /* let the abort path do the real release */ 1144 lpfc_nvmet_defer_release(phba, ctxp); 1145 } 1146 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 1147 1148 lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid, 1149 ctxp->state, aborting); 1150 1151 atomic_inc(&lpfc_nvmep->xmt_fcp_release); 1152 ctxp->flag &= ~LPFC_NVMET_TNOTIFY; 1153 1154 if (aborting) 1155 return; 1156 1157 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 1158 } 1159 1160 static void 1161 lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport, 1162 struct nvmefc_tgt_fcp_req *rsp) 1163 { 1164 struct lpfc_nvmet_tgtport *tgtp; 1165 struct lpfc_nvmet_rcv_ctx *ctxp = 1166 container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req); 1167 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; 1168 struct lpfc_hba *phba = ctxp->phba; 1169 unsigned long iflag; 1170 1171 1172 lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n", 1173 ctxp->oxid, ctxp->size, raw_smp_processor_id()); 1174 1175 if (!nvmebuf) { 1176 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 1177 "6425 Defer rcv: no buffer oxid x%x: " 1178 "flg %x ste %x\n", 1179 ctxp->oxid, ctxp->flag, ctxp->state); 1180 return; 1181 } 1182 1183 tgtp = phba->targetport->private; 1184 if (tgtp) 1185 atomic_inc(&tgtp->rcv_fcp_cmd_defer); 1186 1187 /* Free the nvmebuf since a new buffer already replaced it */ 1188 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); 1189 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1190 ctxp->rqb_buffer = NULL; 1191 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1192 } 1193 1194 static void 1195 lpfc_nvmet_discovery_event(struct nvmet_fc_target_port *tgtport) 1196 { 1197 struct lpfc_nvmet_tgtport *tgtp; 1198 struct lpfc_hba *phba; 1199 uint32_t rc; 1200 1201 tgtp = tgtport->private; 1202 phba = tgtp->phba; 1203 1204 rc = lpfc_issue_els_rscn(phba->pport, 0); 1205 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1206 "6420 NVMET subsystem change: Notification %s\n", 1207 (rc) ? "Failed" : "Sent"); 1208 } 1209 1210 static struct nvmet_fc_target_template lpfc_tgttemplate = { 1211 .targetport_delete = lpfc_nvmet_targetport_delete, 1212 .xmt_ls_rsp = lpfc_nvmet_xmt_ls_rsp, 1213 .fcp_op = lpfc_nvmet_xmt_fcp_op, 1214 .fcp_abort = lpfc_nvmet_xmt_fcp_abort, 1215 .fcp_req_release = lpfc_nvmet_xmt_fcp_release, 1216 .defer_rcv = lpfc_nvmet_defer_rcv, 1217 .discovery_event = lpfc_nvmet_discovery_event, 1218 1219 .max_hw_queues = 1, 1220 .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, 1221 .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, 1222 .dma_boundary = 0xFFFFFFFF, 1223 1224 /* optional features */ 1225 .target_features = 0, 1226 /* sizes of additional private data for data structures */ 1227 .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport), 1228 }; 1229 1230 static void 1231 __lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba *phba, 1232 struct lpfc_nvmet_ctx_info *infop) 1233 { 1234 struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf; 1235 unsigned long flags; 1236 1237 spin_lock_irqsave(&infop->nvmet_ctx_list_lock, flags); 1238 list_for_each_entry_safe(ctx_buf, next_ctx_buf, 1239 &infop->nvmet_ctx_list, list) { 1240 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1241 list_del_init(&ctx_buf->list); 1242 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1243 1244 __lpfc_clear_active_sglq(phba, ctx_buf->sglq->sli4_lxritag); 1245 ctx_buf->sglq->state = SGL_FREED; 1246 ctx_buf->sglq->ndlp = NULL; 1247 1248 spin_lock(&phba->sli4_hba.sgl_list_lock); 1249 list_add_tail(&ctx_buf->sglq->list, 1250 &phba->sli4_hba.lpfc_nvmet_sgl_list); 1251 spin_unlock(&phba->sli4_hba.sgl_list_lock); 1252 1253 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); 1254 kfree(ctx_buf->context); 1255 } 1256 spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, flags); 1257 } 1258 1259 static void 1260 lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba) 1261 { 1262 struct lpfc_nvmet_ctx_info *infop; 1263 int i, j; 1264 1265 /* The first context list, MRQ 0 CPU 0 */ 1266 infop = phba->sli4_hba.nvmet_ctx_info; 1267 if (!infop) 1268 return; 1269 1270 /* Cycle the the entire CPU context list for every MRQ */ 1271 for (i = 0; i < phba->cfg_nvmet_mrq; i++) { 1272 for_each_present_cpu(j) { 1273 infop = lpfc_get_ctx_list(phba, j, i); 1274 __lpfc_nvmet_clean_io_for_cpu(phba, infop); 1275 } 1276 } 1277 kfree(phba->sli4_hba.nvmet_ctx_info); 1278 phba->sli4_hba.nvmet_ctx_info = NULL; 1279 } 1280 1281 static int 1282 lpfc_nvmet_setup_io_context(struct lpfc_hba *phba) 1283 { 1284 struct lpfc_nvmet_ctxbuf *ctx_buf; 1285 struct lpfc_iocbq *nvmewqe; 1286 union lpfc_wqe128 *wqe; 1287 struct lpfc_nvmet_ctx_info *last_infop; 1288 struct lpfc_nvmet_ctx_info *infop; 1289 int i, j, idx, cpu; 1290 1291 lpfc_printf_log(phba, KERN_INFO, LOG_NVME, 1292 "6403 Allocate NVMET resources for %d XRIs\n", 1293 phba->sli4_hba.nvmet_xri_cnt); 1294 1295 phba->sli4_hba.nvmet_ctx_info = kcalloc( 1296 phba->sli4_hba.num_possible_cpu * phba->cfg_nvmet_mrq, 1297 sizeof(struct lpfc_nvmet_ctx_info), GFP_KERNEL); 1298 if (!phba->sli4_hba.nvmet_ctx_info) { 1299 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 1300 "6419 Failed allocate memory for " 1301 "nvmet context lists\n"); 1302 return -ENOMEM; 1303 } 1304 1305 /* 1306 * Assuming X CPUs in the system, and Y MRQs, allocate some 1307 * lpfc_nvmet_ctx_info structures as follows: 1308 * 1309 * cpu0/mrq0 cpu1/mrq0 ... cpuX/mrq0 1310 * cpu0/mrq1 cpu1/mrq1 ... cpuX/mrq1 1311 * ... 1312 * cpuX/mrqY cpuX/mrqY ... cpuX/mrqY 1313 * 1314 * Each line represents a MRQ "silo" containing an entry for 1315 * every CPU. 1316 * 1317 * MRQ X is initially assumed to be associated with CPU X, thus 1318 * contexts are initially distributed across all MRQs using 1319 * the MRQ index (N) as follows cpuN/mrqN. When contexts are 1320 * freed, the are freed to the MRQ silo based on the CPU number 1321 * of the IO completion. Thus a context that was allocated for MRQ A 1322 * whose IO completed on CPU B will be freed to cpuB/mrqA. 1323 */ 1324 for_each_possible_cpu(i) { 1325 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1326 infop = lpfc_get_ctx_list(phba, i, j); 1327 INIT_LIST_HEAD(&infop->nvmet_ctx_list); 1328 spin_lock_init(&infop->nvmet_ctx_list_lock); 1329 infop->nvmet_ctx_list_cnt = 0; 1330 } 1331 } 1332 1333 /* 1334 * Setup the next CPU context info ptr for each MRQ. 1335 * MRQ 0 will cycle thru CPUs 0 - X separately from 1336 * MRQ 1 cycling thru CPUs 0 - X, and so on. 1337 */ 1338 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1339 last_infop = lpfc_get_ctx_list(phba, 1340 cpumask_first(cpu_present_mask), 1341 j); 1342 for (i = phba->sli4_hba.num_possible_cpu - 1; i >= 0; i--) { 1343 infop = lpfc_get_ctx_list(phba, i, j); 1344 infop->nvmet_ctx_next_cpu = last_infop; 1345 last_infop = infop; 1346 } 1347 } 1348 1349 /* For all nvmet xris, allocate resources needed to process a 1350 * received command on a per xri basis. 1351 */ 1352 idx = 0; 1353 cpu = cpumask_first(cpu_present_mask); 1354 for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) { 1355 ctx_buf = kzalloc(sizeof(*ctx_buf), GFP_KERNEL); 1356 if (!ctx_buf) { 1357 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1358 "6404 Ran out of memory for NVMET\n"); 1359 return -ENOMEM; 1360 } 1361 1362 ctx_buf->context = kzalloc(sizeof(*ctx_buf->context), 1363 GFP_KERNEL); 1364 if (!ctx_buf->context) { 1365 kfree(ctx_buf); 1366 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1367 "6405 Ran out of NVMET " 1368 "context memory\n"); 1369 return -ENOMEM; 1370 } 1371 ctx_buf->context->ctxbuf = ctx_buf; 1372 ctx_buf->context->state = LPFC_NVMET_STE_FREE; 1373 1374 ctx_buf->iocbq = lpfc_sli_get_iocbq(phba); 1375 if (!ctx_buf->iocbq) { 1376 kfree(ctx_buf->context); 1377 kfree(ctx_buf); 1378 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1379 "6406 Ran out of NVMET iocb/WQEs\n"); 1380 return -ENOMEM; 1381 } 1382 ctx_buf->iocbq->iocb_flag = LPFC_IO_NVMET; 1383 nvmewqe = ctx_buf->iocbq; 1384 wqe = &nvmewqe->wqe; 1385 1386 /* Initialize WQE */ 1387 memset(wqe, 0, sizeof(union lpfc_wqe)); 1388 1389 ctx_buf->iocbq->context1 = NULL; 1390 spin_lock(&phba->sli4_hba.sgl_list_lock); 1391 ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq); 1392 spin_unlock(&phba->sli4_hba.sgl_list_lock); 1393 if (!ctx_buf->sglq) { 1394 lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); 1395 kfree(ctx_buf->context); 1396 kfree(ctx_buf); 1397 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1398 "6407 Ran out of NVMET XRIs\n"); 1399 return -ENOMEM; 1400 } 1401 INIT_WORK(&ctx_buf->defer_work, lpfc_nvmet_fcp_rqst_defer_work); 1402 1403 /* 1404 * Add ctx to MRQidx context list. Our initial assumption 1405 * is MRQidx will be associated with CPUidx. This association 1406 * can change on the fly. 1407 */ 1408 infop = lpfc_get_ctx_list(phba, cpu, idx); 1409 spin_lock(&infop->nvmet_ctx_list_lock); 1410 list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); 1411 infop->nvmet_ctx_list_cnt++; 1412 spin_unlock(&infop->nvmet_ctx_list_lock); 1413 1414 /* Spread ctx structures evenly across all MRQs */ 1415 idx++; 1416 if (idx >= phba->cfg_nvmet_mrq) { 1417 idx = 0; 1418 cpu = cpumask_first(cpu_present_mask); 1419 continue; 1420 } 1421 cpu = cpumask_next(cpu, cpu_present_mask); 1422 if (cpu == nr_cpu_ids) 1423 cpu = cpumask_first(cpu_present_mask); 1424 1425 } 1426 1427 for_each_present_cpu(i) { 1428 for (j = 0; j < phba->cfg_nvmet_mrq; j++) { 1429 infop = lpfc_get_ctx_list(phba, i, j); 1430 lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT, 1431 "6408 TOTAL NVMET ctx for CPU %d " 1432 "MRQ %d: cnt %d nextcpu x%px\n", 1433 i, j, infop->nvmet_ctx_list_cnt, 1434 infop->nvmet_ctx_next_cpu); 1435 } 1436 } 1437 return 0; 1438 } 1439 1440 int 1441 lpfc_nvmet_create_targetport(struct lpfc_hba *phba) 1442 { 1443 struct lpfc_vport *vport = phba->pport; 1444 struct lpfc_nvmet_tgtport *tgtp; 1445 struct nvmet_fc_port_info pinfo; 1446 int error; 1447 1448 if (phba->targetport) 1449 return 0; 1450 1451 error = lpfc_nvmet_setup_io_context(phba); 1452 if (error) 1453 return error; 1454 1455 memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info)); 1456 pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); 1457 pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn); 1458 pinfo.port_id = vport->fc_myDID; 1459 1460 /* We need to tell the transport layer + 1 because it takes page 1461 * alignment into account. When space for the SGL is allocated we 1462 * allocate + 3, one for cmd, one for rsp and one for this alignment 1463 */ 1464 lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; 1465 lpfc_tgttemplate.max_hw_queues = phba->cfg_hdw_queue; 1466 lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP; 1467 1468 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1469 error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate, 1470 &phba->pcidev->dev, 1471 &phba->targetport); 1472 #else 1473 error = -ENOENT; 1474 #endif 1475 if (error) { 1476 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 1477 "6025 Cannot register NVME targetport x%x: " 1478 "portnm %llx nodenm %llx segs %d qs %d\n", 1479 error, 1480 pinfo.port_name, pinfo.node_name, 1481 lpfc_tgttemplate.max_sgl_segments, 1482 lpfc_tgttemplate.max_hw_queues); 1483 phba->targetport = NULL; 1484 phba->nvmet_support = 0; 1485 1486 lpfc_nvmet_cleanup_io_context(phba); 1487 1488 } else { 1489 tgtp = (struct lpfc_nvmet_tgtport *) 1490 phba->targetport->private; 1491 tgtp->phba = phba; 1492 1493 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 1494 "6026 Registered NVME " 1495 "targetport: x%px, private x%px " 1496 "portnm %llx nodenm %llx segs %d qs %d\n", 1497 phba->targetport, tgtp, 1498 pinfo.port_name, pinfo.node_name, 1499 lpfc_tgttemplate.max_sgl_segments, 1500 lpfc_tgttemplate.max_hw_queues); 1501 1502 atomic_set(&tgtp->rcv_ls_req_in, 0); 1503 atomic_set(&tgtp->rcv_ls_req_out, 0); 1504 atomic_set(&tgtp->rcv_ls_req_drop, 0); 1505 atomic_set(&tgtp->xmt_ls_abort, 0); 1506 atomic_set(&tgtp->xmt_ls_abort_cmpl, 0); 1507 atomic_set(&tgtp->xmt_ls_rsp, 0); 1508 atomic_set(&tgtp->xmt_ls_drop, 0); 1509 atomic_set(&tgtp->xmt_ls_rsp_error, 0); 1510 atomic_set(&tgtp->xmt_ls_rsp_xb_set, 0); 1511 atomic_set(&tgtp->xmt_ls_rsp_aborted, 0); 1512 atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0); 1513 atomic_set(&tgtp->rcv_fcp_cmd_in, 0); 1514 atomic_set(&tgtp->rcv_fcp_cmd_out, 0); 1515 atomic_set(&tgtp->rcv_fcp_cmd_drop, 0); 1516 atomic_set(&tgtp->xmt_fcp_drop, 0); 1517 atomic_set(&tgtp->xmt_fcp_read_rsp, 0); 1518 atomic_set(&tgtp->xmt_fcp_read, 0); 1519 atomic_set(&tgtp->xmt_fcp_write, 0); 1520 atomic_set(&tgtp->xmt_fcp_rsp, 0); 1521 atomic_set(&tgtp->xmt_fcp_release, 0); 1522 atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0); 1523 atomic_set(&tgtp->xmt_fcp_rsp_error, 0); 1524 atomic_set(&tgtp->xmt_fcp_rsp_xb_set, 0); 1525 atomic_set(&tgtp->xmt_fcp_rsp_aborted, 0); 1526 atomic_set(&tgtp->xmt_fcp_rsp_drop, 0); 1527 atomic_set(&tgtp->xmt_fcp_xri_abort_cqe, 0); 1528 atomic_set(&tgtp->xmt_fcp_abort, 0); 1529 atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0); 1530 atomic_set(&tgtp->xmt_abort_unsol, 0); 1531 atomic_set(&tgtp->xmt_abort_sol, 0); 1532 atomic_set(&tgtp->xmt_abort_rsp, 0); 1533 atomic_set(&tgtp->xmt_abort_rsp_error, 0); 1534 atomic_set(&tgtp->defer_ctx, 0); 1535 atomic_set(&tgtp->defer_fod, 0); 1536 atomic_set(&tgtp->defer_wqfull, 0); 1537 } 1538 return error; 1539 } 1540 1541 int 1542 lpfc_nvmet_update_targetport(struct lpfc_hba *phba) 1543 { 1544 struct lpfc_vport *vport = phba->pport; 1545 1546 if (!phba->targetport) 1547 return 0; 1548 1549 lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, 1550 "6007 Update NVMET port x%px did x%x\n", 1551 phba->targetport, vport->fc_myDID); 1552 1553 phba->targetport->port_id = vport->fc_myDID; 1554 return 0; 1555 } 1556 1557 /** 1558 * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort 1559 * @phba: pointer to lpfc hba data structure. 1560 * @axri: pointer to the nvmet xri abort wcqe structure. 1561 * 1562 * This routine is invoked by the worker thread to process a SLI4 fast-path 1563 * NVMET aborted xri. 1564 **/ 1565 void 1566 lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba, 1567 struct sli4_wcqe_xri_aborted *axri) 1568 { 1569 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1570 uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); 1571 uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); 1572 struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp; 1573 struct lpfc_nvmet_tgtport *tgtp; 1574 struct nvmefc_tgt_fcp_req *req = NULL; 1575 struct lpfc_nodelist *ndlp; 1576 unsigned long iflag = 0; 1577 int rrq_empty = 0; 1578 bool released = false; 1579 1580 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1581 "6317 XB aborted xri x%x rxid x%x\n", xri, rxid); 1582 1583 if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) 1584 return; 1585 1586 if (phba->targetport) { 1587 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1588 atomic_inc(&tgtp->xmt_fcp_xri_abort_cqe); 1589 } 1590 1591 spin_lock_irqsave(&phba->hbalock, iflag); 1592 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1593 list_for_each_entry_safe(ctxp, next_ctxp, 1594 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, 1595 list) { 1596 if (ctxp->ctxbuf->sglq->sli4_xritag != xri) 1597 continue; 1598 1599 spin_lock(&ctxp->ctxlock); 1600 /* Check if we already received a free context call 1601 * and we have completed processing an abort situation. 1602 */ 1603 if (ctxp->flag & LPFC_NVMET_CTX_RLS && 1604 !(ctxp->flag & LPFC_NVMET_ABORT_OP)) { 1605 list_del_init(&ctxp->list); 1606 released = true; 1607 } 1608 ctxp->flag &= ~LPFC_NVMET_XBUSY; 1609 spin_unlock(&ctxp->ctxlock); 1610 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1611 1612 rrq_empty = list_empty(&phba->active_rrq_list); 1613 spin_unlock_irqrestore(&phba->hbalock, iflag); 1614 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 1615 if (ndlp && NLP_CHK_NODE_ACT(ndlp) && 1616 (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || 1617 ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { 1618 lpfc_set_rrq_active(phba, ndlp, 1619 ctxp->ctxbuf->sglq->sli4_lxritag, 1620 rxid, 1); 1621 lpfc_sli4_abts_err_handler(phba, ndlp, axri); 1622 } 1623 1624 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1625 "6318 XB aborted oxid x%x flg x%x (%x)\n", 1626 ctxp->oxid, ctxp->flag, released); 1627 if (released) 1628 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 1629 1630 if (rrq_empty) 1631 lpfc_worker_wake_up(phba); 1632 return; 1633 } 1634 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1635 spin_unlock_irqrestore(&phba->hbalock, iflag); 1636 1637 ctxp = lpfc_nvmet_get_ctx_for_xri(phba, xri); 1638 if (ctxp) { 1639 /* 1640 * Abort already done by FW, so BA_ACC sent. 1641 * However, the transport may be unaware. 1642 */ 1643 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1644 "6323 NVMET Rcv ABTS xri x%x ctxp state x%x " 1645 "flag x%x oxid x%x rxid x%x\n", 1646 xri, ctxp->state, ctxp->flag, ctxp->oxid, 1647 rxid); 1648 1649 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1650 ctxp->flag |= LPFC_NVMET_ABTS_RCV; 1651 ctxp->state = LPFC_NVMET_STE_ABORT; 1652 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1653 1654 lpfc_nvmeio_data(phba, 1655 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1656 xri, raw_smp_processor_id(), 0); 1657 1658 req = &ctxp->ctx.fcp_req; 1659 if (req) 1660 nvmet_fc_rcv_fcp_abort(phba->targetport, req); 1661 } 1662 #endif 1663 } 1664 1665 int 1666 lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport, 1667 struct fc_frame_header *fc_hdr) 1668 { 1669 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1670 struct lpfc_hba *phba = vport->phba; 1671 struct lpfc_nvmet_rcv_ctx *ctxp, *next_ctxp; 1672 struct nvmefc_tgt_fcp_req *rsp; 1673 uint32_t sid; 1674 uint16_t oxid, xri; 1675 unsigned long iflag = 0; 1676 1677 sid = sli4_sid_from_fc_hdr(fc_hdr); 1678 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 1679 1680 spin_lock_irqsave(&phba->hbalock, iflag); 1681 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1682 list_for_each_entry_safe(ctxp, next_ctxp, 1683 &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, 1684 list) { 1685 if (ctxp->oxid != oxid || ctxp->sid != sid) 1686 continue; 1687 1688 xri = ctxp->ctxbuf->sglq->sli4_xritag; 1689 1690 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1691 spin_unlock_irqrestore(&phba->hbalock, iflag); 1692 1693 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1694 ctxp->flag |= LPFC_NVMET_ABTS_RCV; 1695 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1696 1697 lpfc_nvmeio_data(phba, 1698 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1699 xri, raw_smp_processor_id(), 0); 1700 1701 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1702 "6319 NVMET Rcv ABTS:acc xri x%x\n", xri); 1703 1704 rsp = &ctxp->ctx.fcp_req; 1705 nvmet_fc_rcv_fcp_abort(phba->targetport, rsp); 1706 1707 /* Respond with BA_ACC accordingly */ 1708 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1709 return 0; 1710 } 1711 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 1712 spin_unlock_irqrestore(&phba->hbalock, iflag); 1713 1714 /* check the wait list */ 1715 if (phba->sli4_hba.nvmet_io_wait_cnt) { 1716 struct rqb_dmabuf *nvmebuf; 1717 struct fc_frame_header *fc_hdr_tmp; 1718 u32 sid_tmp; 1719 u16 oxid_tmp; 1720 bool found = false; 1721 1722 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 1723 1724 /* match by oxid and s_id */ 1725 list_for_each_entry(nvmebuf, 1726 &phba->sli4_hba.lpfc_nvmet_io_wait_list, 1727 hbuf.list) { 1728 fc_hdr_tmp = (struct fc_frame_header *) 1729 (nvmebuf->hbuf.virt); 1730 oxid_tmp = be16_to_cpu(fc_hdr_tmp->fh_ox_id); 1731 sid_tmp = sli4_sid_from_fc_hdr(fc_hdr_tmp); 1732 if (oxid_tmp != oxid || sid_tmp != sid) 1733 continue; 1734 1735 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1736 "6321 NVMET Rcv ABTS oxid x%x from x%x " 1737 "is waiting for a ctxp\n", 1738 oxid, sid); 1739 1740 list_del_init(&nvmebuf->hbuf.list); 1741 phba->sli4_hba.nvmet_io_wait_cnt--; 1742 found = true; 1743 break; 1744 } 1745 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 1746 iflag); 1747 1748 /* free buffer since already posted a new DMA buffer to RQ */ 1749 if (found) { 1750 nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); 1751 /* Respond with BA_ACC accordingly */ 1752 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1753 return 0; 1754 } 1755 } 1756 1757 /* check active list */ 1758 ctxp = lpfc_nvmet_get_ctx_for_oxid(phba, oxid, sid); 1759 if (ctxp) { 1760 xri = ctxp->ctxbuf->sglq->sli4_xritag; 1761 1762 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1763 ctxp->flag |= (LPFC_NVMET_ABTS_RCV | LPFC_NVMET_ABORT_OP); 1764 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1765 1766 lpfc_nvmeio_data(phba, 1767 "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", 1768 xri, raw_smp_processor_id(), 0); 1769 1770 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1771 "6322 NVMET Rcv ABTS:acc oxid x%x xri x%x " 1772 "flag x%x state x%x\n", 1773 ctxp->oxid, xri, ctxp->flag, ctxp->state); 1774 1775 if (ctxp->flag & LPFC_NVMET_TNOTIFY) { 1776 /* Notify the transport */ 1777 nvmet_fc_rcv_fcp_abort(phba->targetport, 1778 &ctxp->ctx.fcp_req); 1779 } else { 1780 cancel_work_sync(&ctxp->ctxbuf->defer_work); 1781 spin_lock_irqsave(&ctxp->ctxlock, iflag); 1782 lpfc_nvmet_defer_release(phba, ctxp); 1783 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 1784 } 1785 lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, 1786 ctxp->oxid); 1787 1788 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); 1789 return 0; 1790 } 1791 1792 lpfc_nvmeio_data(phba, "NVMET ABTS RCV: oxid x%x CPU %02x rjt %d\n", 1793 oxid, raw_smp_processor_id(), 1); 1794 1795 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 1796 "6320 NVMET Rcv ABTS:rjt oxid x%x\n", oxid); 1797 1798 /* Respond with BA_RJT accordingly */ 1799 lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0); 1800 #endif 1801 return 0; 1802 } 1803 1804 static void 1805 lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq, 1806 struct lpfc_nvmet_rcv_ctx *ctxp) 1807 { 1808 struct lpfc_sli_ring *pring; 1809 struct lpfc_iocbq *nvmewqeq; 1810 struct lpfc_iocbq *next_nvmewqeq; 1811 unsigned long iflags; 1812 struct lpfc_wcqe_complete wcqe; 1813 struct lpfc_wcqe_complete *wcqep; 1814 1815 pring = wq->pring; 1816 wcqep = &wcqe; 1817 1818 /* Fake an ABORT error code back to cmpl routine */ 1819 memset(wcqep, 0, sizeof(struct lpfc_wcqe_complete)); 1820 bf_set(lpfc_wcqe_c_status, wcqep, IOSTAT_LOCAL_REJECT); 1821 wcqep->parameter = IOERR_ABORT_REQUESTED; 1822 1823 spin_lock_irqsave(&pring->ring_lock, iflags); 1824 list_for_each_entry_safe(nvmewqeq, next_nvmewqeq, 1825 &wq->wqfull_list, list) { 1826 if (ctxp) { 1827 /* Checking for a specific IO to flush */ 1828 if (nvmewqeq->context2 == ctxp) { 1829 list_del(&nvmewqeq->list); 1830 spin_unlock_irqrestore(&pring->ring_lock, 1831 iflags); 1832 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, 1833 wcqep); 1834 return; 1835 } 1836 continue; 1837 } else { 1838 /* Flush all IOs */ 1839 list_del(&nvmewqeq->list); 1840 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1841 lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, wcqep); 1842 spin_lock_irqsave(&pring->ring_lock, iflags); 1843 } 1844 } 1845 if (!ctxp) 1846 wq->q_flag &= ~HBA_NVMET_WQFULL; 1847 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1848 } 1849 1850 void 1851 lpfc_nvmet_wqfull_process(struct lpfc_hba *phba, 1852 struct lpfc_queue *wq) 1853 { 1854 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1855 struct lpfc_sli_ring *pring; 1856 struct lpfc_iocbq *nvmewqeq; 1857 struct lpfc_nvmet_rcv_ctx *ctxp; 1858 unsigned long iflags; 1859 int rc; 1860 1861 /* 1862 * Some WQE slots are available, so try to re-issue anything 1863 * on the WQ wqfull_list. 1864 */ 1865 pring = wq->pring; 1866 spin_lock_irqsave(&pring->ring_lock, iflags); 1867 while (!list_empty(&wq->wqfull_list)) { 1868 list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq, 1869 list); 1870 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1871 ctxp = (struct lpfc_nvmet_rcv_ctx *)nvmewqeq->context2; 1872 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); 1873 spin_lock_irqsave(&pring->ring_lock, iflags); 1874 if (rc == -EBUSY) { 1875 /* WQ was full again, so put it back on the list */ 1876 list_add(&nvmewqeq->list, &wq->wqfull_list); 1877 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1878 return; 1879 } 1880 if (rc == WQE_SUCCESS) { 1881 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 1882 if (ctxp->ts_cmd_nvme) { 1883 if (ctxp->ctx.fcp_req.op == NVMET_FCOP_RSP) 1884 ctxp->ts_status_wqput = ktime_get_ns(); 1885 else 1886 ctxp->ts_data_wqput = ktime_get_ns(); 1887 } 1888 #endif 1889 } else { 1890 WARN_ON(rc); 1891 } 1892 } 1893 wq->q_flag &= ~HBA_NVMET_WQFULL; 1894 spin_unlock_irqrestore(&pring->ring_lock, iflags); 1895 1896 #endif 1897 } 1898 1899 void 1900 lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba) 1901 { 1902 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1903 struct lpfc_nvmet_tgtport *tgtp; 1904 struct lpfc_queue *wq; 1905 uint32_t qidx; 1906 DECLARE_COMPLETION_ONSTACK(tport_unreg_cmp); 1907 1908 if (phba->nvmet_support == 0) 1909 return; 1910 if (phba->targetport) { 1911 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1912 for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) { 1913 wq = phba->sli4_hba.hdwq[qidx].io_wq; 1914 lpfc_nvmet_wqfull_flush(phba, wq, NULL); 1915 } 1916 tgtp->tport_unreg_cmp = &tport_unreg_cmp; 1917 nvmet_fc_unregister_targetport(phba->targetport); 1918 if (!wait_for_completion_timeout(tgtp->tport_unreg_cmp, 1919 msecs_to_jiffies(LPFC_NVMET_WAIT_TMO))) 1920 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 1921 "6179 Unreg targetport x%px timeout " 1922 "reached.\n", phba->targetport); 1923 lpfc_nvmet_cleanup_io_context(phba); 1924 } 1925 phba->targetport = NULL; 1926 #endif 1927 } 1928 1929 /** 1930 * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer 1931 * @phba: pointer to lpfc hba data structure. 1932 * @pring: pointer to a SLI ring. 1933 * @nvmebuf: pointer to lpfc nvme command HBQ data structure. 1934 * 1935 * This routine is used for processing the WQE associated with a unsolicited 1936 * event. It first determines whether there is an existing ndlp that matches 1937 * the DID from the unsolicited WQE. If not, it will create a new one with 1938 * the DID from the unsolicited WQE. The ELS command from the unsolicited 1939 * WQE is then used to invoke the proper routine and to set up proper state 1940 * of the discovery state machine. 1941 **/ 1942 static void 1943 lpfc_nvmet_unsol_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 1944 struct hbq_dmabuf *nvmebuf) 1945 { 1946 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 1947 struct lpfc_nvmet_tgtport *tgtp; 1948 struct fc_frame_header *fc_hdr; 1949 struct lpfc_nvmet_rcv_ctx *ctxp; 1950 uint32_t *payload; 1951 uint32_t size, oxid, sid, rc; 1952 1953 1954 if (!nvmebuf || !phba->targetport) { 1955 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1956 "6154 LS Drop IO\n"); 1957 oxid = 0; 1958 size = 0; 1959 sid = 0; 1960 ctxp = NULL; 1961 goto dropit; 1962 } 1963 1964 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 1965 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 1966 1967 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 1968 payload = (uint32_t *)(nvmebuf->dbuf.virt); 1969 size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl); 1970 sid = sli4_sid_from_fc_hdr(fc_hdr); 1971 1972 ctxp = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), GFP_ATOMIC); 1973 if (ctxp == NULL) { 1974 atomic_inc(&tgtp->rcv_ls_req_drop); 1975 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 1976 "6155 LS Drop IO x%x: Alloc\n", 1977 oxid); 1978 dropit: 1979 lpfc_nvmeio_data(phba, "NVMET LS DROP: " 1980 "xri x%x sz %d from %06x\n", 1981 oxid, size, sid); 1982 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 1983 return; 1984 } 1985 ctxp->phba = phba; 1986 ctxp->size = size; 1987 ctxp->oxid = oxid; 1988 ctxp->sid = sid; 1989 ctxp->wqeq = NULL; 1990 ctxp->state = LPFC_NVMET_STE_LS_RCV; 1991 ctxp->entry_cnt = 1; 1992 ctxp->rqb_buffer = (void *)nvmebuf; 1993 ctxp->hdwq = &phba->sli4_hba.hdwq[0]; 1994 1995 lpfc_nvmeio_data(phba, "NVMET LS RCV: xri x%x sz %d from %06x\n", 1996 oxid, size, sid); 1997 /* 1998 * The calling sequence should be: 1999 * nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done 2000 * lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp. 2001 */ 2002 atomic_inc(&tgtp->rcv_ls_req_in); 2003 rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req, 2004 payload, size); 2005 2006 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 2007 "6037 NVMET Unsol rcv: sz %d rc %d: %08x %08x %08x " 2008 "%08x %08x %08x\n", size, rc, 2009 *payload, *(payload+1), *(payload+2), 2010 *(payload+3), *(payload+4), *(payload+5)); 2011 2012 if (rc == 0) { 2013 atomic_inc(&tgtp->rcv_ls_req_out); 2014 return; 2015 } 2016 2017 lpfc_nvmeio_data(phba, "NVMET LS DROP: xri x%x sz %d from %06x\n", 2018 oxid, size, sid); 2019 2020 atomic_inc(&tgtp->rcv_ls_req_drop); 2021 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2022 "6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n", 2023 ctxp->oxid, rc); 2024 2025 /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */ 2026 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 2027 2028 atomic_inc(&tgtp->xmt_ls_abort); 2029 lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid); 2030 #endif 2031 } 2032 2033 static void 2034 lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf) 2035 { 2036 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2037 struct lpfc_nvmet_rcv_ctx *ctxp = ctx_buf->context; 2038 struct lpfc_hba *phba = ctxp->phba; 2039 struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; 2040 struct lpfc_nvmet_tgtport *tgtp; 2041 uint32_t *payload, qno; 2042 uint32_t rc; 2043 unsigned long iflags; 2044 2045 if (!nvmebuf) { 2046 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2047 "6159 process_rcv_fcp_req, nvmebuf is NULL, " 2048 "oxid: x%x flg: x%x state: x%x\n", 2049 ctxp->oxid, ctxp->flag, ctxp->state); 2050 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2051 lpfc_nvmet_defer_release(phba, ctxp); 2052 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2053 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, 2054 ctxp->oxid); 2055 return; 2056 } 2057 2058 if (ctxp->flag & LPFC_NVMET_ABTS_RCV) { 2059 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2060 "6324 IO oxid x%x aborted\n", 2061 ctxp->oxid); 2062 return; 2063 } 2064 2065 payload = (uint32_t *)(nvmebuf->dbuf.virt); 2066 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2067 ctxp->flag |= LPFC_NVMET_TNOTIFY; 2068 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2069 if (ctxp->ts_isr_cmd) 2070 ctxp->ts_cmd_nvme = ktime_get_ns(); 2071 #endif 2072 /* 2073 * The calling sequence should be: 2074 * nvmet_fc_rcv_fcp_req->lpfc_nvmet_xmt_fcp_op/cmp- req->done 2075 * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp. 2076 * When we return from nvmet_fc_rcv_fcp_req, all relevant info 2077 * the NVME command / FC header is stored. 2078 * A buffer has already been reposted for this IO, so just free 2079 * the nvmebuf. 2080 */ 2081 rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req, 2082 payload, ctxp->size); 2083 /* Process FCP command */ 2084 if (rc == 0) { 2085 atomic_inc(&tgtp->rcv_fcp_cmd_out); 2086 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2087 if ((ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) || 2088 (nvmebuf != ctxp->rqb_buffer)) { 2089 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2090 return; 2091 } 2092 ctxp->rqb_buffer = NULL; 2093 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2094 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */ 2095 return; 2096 } 2097 2098 /* Processing of FCP command is deferred */ 2099 if (rc == -EOVERFLOW) { 2100 lpfc_nvmeio_data(phba, "NVMET RCV BUSY: xri x%x sz %d " 2101 "from %06x\n", 2102 ctxp->oxid, ctxp->size, ctxp->sid); 2103 atomic_inc(&tgtp->rcv_fcp_cmd_out); 2104 atomic_inc(&tgtp->defer_fod); 2105 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2106 if (ctxp->flag & LPFC_NVMET_CTX_REUSE_WQ) { 2107 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2108 return; 2109 } 2110 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2111 /* 2112 * Post a replacement DMA buffer to RQ and defer 2113 * freeing rcv buffer till .defer_rcv callback 2114 */ 2115 qno = nvmebuf->idx; 2116 lpfc_post_rq_buffer( 2117 phba, phba->sli4_hba.nvmet_mrq_hdr[qno], 2118 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); 2119 return; 2120 } 2121 ctxp->flag &= ~LPFC_NVMET_TNOTIFY; 2122 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 2123 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2124 "2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n", 2125 ctxp->oxid, rc, 2126 atomic_read(&tgtp->rcv_fcp_cmd_in), 2127 atomic_read(&tgtp->rcv_fcp_cmd_out), 2128 atomic_read(&tgtp->xmt_fcp_release)); 2129 lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n", 2130 ctxp->oxid, ctxp->size, ctxp->sid); 2131 spin_lock_irqsave(&ctxp->ctxlock, iflags); 2132 lpfc_nvmet_defer_release(phba, ctxp); 2133 spin_unlock_irqrestore(&ctxp->ctxlock, iflags); 2134 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); 2135 #endif 2136 } 2137 2138 static void 2139 lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *work) 2140 { 2141 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2142 struct lpfc_nvmet_ctxbuf *ctx_buf = 2143 container_of(work, struct lpfc_nvmet_ctxbuf, defer_work); 2144 2145 lpfc_nvmet_process_rcv_fcp_req(ctx_buf); 2146 #endif 2147 } 2148 2149 static struct lpfc_nvmet_ctxbuf * 2150 lpfc_nvmet_replenish_context(struct lpfc_hba *phba, 2151 struct lpfc_nvmet_ctx_info *current_infop) 2152 { 2153 #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2154 struct lpfc_nvmet_ctxbuf *ctx_buf = NULL; 2155 struct lpfc_nvmet_ctx_info *get_infop; 2156 int i; 2157 2158 /* 2159 * The current_infop for the MRQ a NVME command IU was received 2160 * on is empty. Our goal is to replenish this MRQs context 2161 * list from a another CPUs. 2162 * 2163 * First we need to pick a context list to start looking on. 2164 * nvmet_ctx_start_cpu has available context the last time 2165 * we needed to replenish this CPU where nvmet_ctx_next_cpu 2166 * is just the next sequential CPU for this MRQ. 2167 */ 2168 if (current_infop->nvmet_ctx_start_cpu) 2169 get_infop = current_infop->nvmet_ctx_start_cpu; 2170 else 2171 get_infop = current_infop->nvmet_ctx_next_cpu; 2172 2173 for (i = 0; i < phba->sli4_hba.num_possible_cpu; i++) { 2174 if (get_infop == current_infop) { 2175 get_infop = get_infop->nvmet_ctx_next_cpu; 2176 continue; 2177 } 2178 spin_lock(&get_infop->nvmet_ctx_list_lock); 2179 2180 /* Just take the entire context list, if there are any */ 2181 if (get_infop->nvmet_ctx_list_cnt) { 2182 list_splice_init(&get_infop->nvmet_ctx_list, 2183 ¤t_infop->nvmet_ctx_list); 2184 current_infop->nvmet_ctx_list_cnt = 2185 get_infop->nvmet_ctx_list_cnt - 1; 2186 get_infop->nvmet_ctx_list_cnt = 0; 2187 spin_unlock(&get_infop->nvmet_ctx_list_lock); 2188 2189 current_infop->nvmet_ctx_start_cpu = get_infop; 2190 list_remove_head(¤t_infop->nvmet_ctx_list, 2191 ctx_buf, struct lpfc_nvmet_ctxbuf, 2192 list); 2193 return ctx_buf; 2194 } 2195 2196 /* Otherwise, move on to the next CPU for this MRQ */ 2197 spin_unlock(&get_infop->nvmet_ctx_list_lock); 2198 get_infop = get_infop->nvmet_ctx_next_cpu; 2199 } 2200 2201 #endif 2202 /* Nothing found, all contexts for the MRQ are in-flight */ 2203 return NULL; 2204 } 2205 2206 /** 2207 * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer 2208 * @phba: pointer to lpfc hba data structure. 2209 * @idx: relative index of MRQ vector 2210 * @nvmebuf: pointer to lpfc nvme command HBQ data structure. 2211 * @isr_timestamp: in jiffies. 2212 * @cqflag: cq processing information regarding workload. 2213 * 2214 * This routine is used for processing the WQE associated with a unsolicited 2215 * event. It first determines whether there is an existing ndlp that matches 2216 * the DID from the unsolicited WQE. If not, it will create a new one with 2217 * the DID from the unsolicited WQE. The ELS command from the unsolicited 2218 * WQE is then used to invoke the proper routine and to set up proper state 2219 * of the discovery state machine. 2220 **/ 2221 static void 2222 lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba, 2223 uint32_t idx, 2224 struct rqb_dmabuf *nvmebuf, 2225 uint64_t isr_timestamp, 2226 uint8_t cqflag) 2227 { 2228 struct lpfc_nvmet_rcv_ctx *ctxp; 2229 struct lpfc_nvmet_tgtport *tgtp; 2230 struct fc_frame_header *fc_hdr; 2231 struct lpfc_nvmet_ctxbuf *ctx_buf; 2232 struct lpfc_nvmet_ctx_info *current_infop; 2233 uint32_t size, oxid, sid, qno; 2234 unsigned long iflag; 2235 int current_cpu; 2236 2237 if (!IS_ENABLED(CONFIG_NVME_TARGET_FC)) 2238 return; 2239 2240 ctx_buf = NULL; 2241 if (!nvmebuf || !phba->targetport) { 2242 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2243 "6157 NVMET FCP Drop IO\n"); 2244 if (nvmebuf) 2245 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 2246 return; 2247 } 2248 2249 /* 2250 * Get a pointer to the context list for this MRQ based on 2251 * the CPU this MRQ IRQ is associated with. If the CPU association 2252 * changes from our initial assumption, the context list could 2253 * be empty, thus it would need to be replenished with the 2254 * context list from another CPU for this MRQ. 2255 */ 2256 current_cpu = raw_smp_processor_id(); 2257 current_infop = lpfc_get_ctx_list(phba, current_cpu, idx); 2258 spin_lock_irqsave(¤t_infop->nvmet_ctx_list_lock, iflag); 2259 if (current_infop->nvmet_ctx_list_cnt) { 2260 list_remove_head(¤t_infop->nvmet_ctx_list, 2261 ctx_buf, struct lpfc_nvmet_ctxbuf, list); 2262 current_infop->nvmet_ctx_list_cnt--; 2263 } else { 2264 ctx_buf = lpfc_nvmet_replenish_context(phba, current_infop); 2265 } 2266 spin_unlock_irqrestore(¤t_infop->nvmet_ctx_list_lock, iflag); 2267 2268 fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); 2269 oxid = be16_to_cpu(fc_hdr->fh_ox_id); 2270 size = nvmebuf->bytes_recv; 2271 2272 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2273 if (phba->cpucheck_on & LPFC_CHECK_NVMET_RCV) { 2274 if (current_cpu < LPFC_CHECK_CPU_CNT) { 2275 if (idx != current_cpu) 2276 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2277 "6703 CPU Check rcv: " 2278 "cpu %d expect %d\n", 2279 current_cpu, idx); 2280 phba->sli4_hba.hdwq[idx].cpucheck_rcv_io[current_cpu]++; 2281 } 2282 } 2283 #endif 2284 2285 lpfc_nvmeio_data(phba, "NVMET FCP RCV: xri x%x sz %d CPU %02x\n", 2286 oxid, size, raw_smp_processor_id()); 2287 2288 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2289 2290 if (!ctx_buf) { 2291 /* Queue this NVME IO to process later */ 2292 spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); 2293 list_add_tail(&nvmebuf->hbuf.list, 2294 &phba->sli4_hba.lpfc_nvmet_io_wait_list); 2295 phba->sli4_hba.nvmet_io_wait_cnt++; 2296 phba->sli4_hba.nvmet_io_wait_total++; 2297 spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, 2298 iflag); 2299 2300 /* Post a brand new DMA buffer to RQ */ 2301 qno = nvmebuf->idx; 2302 lpfc_post_rq_buffer( 2303 phba, phba->sli4_hba.nvmet_mrq_hdr[qno], 2304 phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); 2305 2306 atomic_inc(&tgtp->defer_ctx); 2307 return; 2308 } 2309 2310 sid = sli4_sid_from_fc_hdr(fc_hdr); 2311 2312 ctxp = (struct lpfc_nvmet_rcv_ctx *)ctx_buf->context; 2313 spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); 2314 list_add_tail(&ctxp->list, &phba->sli4_hba.t_active_ctx_list); 2315 spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); 2316 if (ctxp->state != LPFC_NVMET_STE_FREE) { 2317 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2318 "6414 NVMET Context corrupt %d %d oxid x%x\n", 2319 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 2320 } 2321 ctxp->wqeq = NULL; 2322 ctxp->offset = 0; 2323 ctxp->phba = phba; 2324 ctxp->size = size; 2325 ctxp->oxid = oxid; 2326 ctxp->sid = sid; 2327 ctxp->idx = idx; 2328 ctxp->state = LPFC_NVMET_STE_RCV; 2329 ctxp->entry_cnt = 1; 2330 ctxp->flag = 0; 2331 ctxp->ctxbuf = ctx_buf; 2332 ctxp->rqb_buffer = (void *)nvmebuf; 2333 ctxp->hdwq = NULL; 2334 spin_lock_init(&ctxp->ctxlock); 2335 2336 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS 2337 if (isr_timestamp) 2338 ctxp->ts_isr_cmd = isr_timestamp; 2339 ctxp->ts_cmd_nvme = 0; 2340 ctxp->ts_nvme_data = 0; 2341 ctxp->ts_data_wqput = 0; 2342 ctxp->ts_isr_data = 0; 2343 ctxp->ts_data_nvme = 0; 2344 ctxp->ts_nvme_status = 0; 2345 ctxp->ts_status_wqput = 0; 2346 ctxp->ts_isr_status = 0; 2347 ctxp->ts_status_nvme = 0; 2348 #endif 2349 2350 atomic_inc(&tgtp->rcv_fcp_cmd_in); 2351 /* check for cq processing load */ 2352 if (!cqflag) { 2353 lpfc_nvmet_process_rcv_fcp_req(ctx_buf); 2354 return; 2355 } 2356 2357 if (!queue_work(phba->wq, &ctx_buf->defer_work)) { 2358 atomic_inc(&tgtp->rcv_fcp_cmd_drop); 2359 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 2360 "6325 Unable to queue work for oxid x%x. " 2361 "FCP Drop IO [x%x x%x x%x]\n", 2362 ctxp->oxid, 2363 atomic_read(&tgtp->rcv_fcp_cmd_in), 2364 atomic_read(&tgtp->rcv_fcp_cmd_out), 2365 atomic_read(&tgtp->xmt_fcp_release)); 2366 2367 spin_lock_irqsave(&ctxp->ctxlock, iflag); 2368 lpfc_nvmet_defer_release(phba, ctxp); 2369 spin_unlock_irqrestore(&ctxp->ctxlock, iflag); 2370 lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); 2371 } 2372 } 2373 2374 /** 2375 * lpfc_nvmet_unsol_ls_event - Process an unsolicited event from an nvme nport 2376 * @phba: pointer to lpfc hba data structure. 2377 * @pring: pointer to a SLI ring. 2378 * @nvmebuf: pointer to received nvme data structure. 2379 * 2380 * This routine is used to process an unsolicited event received from a SLI 2381 * (Service Level Interface) ring. The actual processing of the data buffer 2382 * associated with the unsolicited event is done by invoking the routine 2383 * lpfc_nvmet_unsol_ls_buffer() after properly set up the buffer from the 2384 * SLI RQ on which the unsolicited event was received. 2385 **/ 2386 void 2387 lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, 2388 struct lpfc_iocbq *piocb) 2389 { 2390 struct lpfc_dmabuf *d_buf; 2391 struct hbq_dmabuf *nvmebuf; 2392 2393 d_buf = piocb->context2; 2394 nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf); 2395 2396 if (!nvmebuf) { 2397 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2398 "3015 LS Drop IO\n"); 2399 return; 2400 } 2401 if (phba->nvmet_support == 0) { 2402 lpfc_in_buf_free(phba, &nvmebuf->dbuf); 2403 return; 2404 } 2405 lpfc_nvmet_unsol_ls_buffer(phba, pring, nvmebuf); 2406 } 2407 2408 /** 2409 * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport 2410 * @phba: pointer to lpfc hba data structure. 2411 * @idx: relative index of MRQ vector 2412 * @nvmebuf: pointer to received nvme data structure. 2413 * @isr_timestamp: in jiffies. 2414 * @cqflag: cq processing information regarding workload. 2415 * 2416 * This routine is used to process an unsolicited event received from a SLI 2417 * (Service Level Interface) ring. The actual processing of the data buffer 2418 * associated with the unsolicited event is done by invoking the routine 2419 * lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the 2420 * SLI RQ on which the unsolicited event was received. 2421 **/ 2422 void 2423 lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba, 2424 uint32_t idx, 2425 struct rqb_dmabuf *nvmebuf, 2426 uint64_t isr_timestamp, 2427 uint8_t cqflag) 2428 { 2429 if (!nvmebuf) { 2430 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2431 "3167 NVMET FCP Drop IO\n"); 2432 return; 2433 } 2434 if (phba->nvmet_support == 0) { 2435 lpfc_rq_buf_free(phba, &nvmebuf->hbuf); 2436 return; 2437 } 2438 lpfc_nvmet_unsol_fcp_buffer(phba, idx, nvmebuf, isr_timestamp, cqflag); 2439 } 2440 2441 /** 2442 * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure 2443 * @phba: pointer to a host N_Port data structure. 2444 * @ctxp: Context info for NVME LS Request 2445 * @rspbuf: DMA buffer of NVME command. 2446 * @rspsize: size of the NVME command. 2447 * 2448 * This routine is used for allocating a lpfc-WQE data structure from 2449 * the driver lpfc-WQE free-list and prepare the WQE with the parameters 2450 * passed into the routine for discovery state machine to issue an Extended 2451 * Link Service (NVME) commands. It is a generic lpfc-WQE allocation 2452 * and preparation routine that is used by all the discovery state machine 2453 * routines and the NVME command-specific fields will be later set up by 2454 * the individual discovery machine routines after calling this routine 2455 * allocating and preparing a generic WQE data structure. It fills in the 2456 * Buffer Descriptor Entries (BDEs), allocates buffers for both command 2457 * payload and response payload (if expected). The reference count on the 2458 * ndlp is incremented by 1 and the reference to the ndlp is put into 2459 * context1 of the WQE data structure for this WQE to hold the ndlp 2460 * reference for the command's callback function to access later. 2461 * 2462 * Return code 2463 * Pointer to the newly allocated/prepared nvme wqe data structure 2464 * NULL - when nvme wqe data structure allocation/preparation failed 2465 **/ 2466 static struct lpfc_iocbq * 2467 lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba, 2468 struct lpfc_nvmet_rcv_ctx *ctxp, 2469 dma_addr_t rspbuf, uint16_t rspsize) 2470 { 2471 struct lpfc_nodelist *ndlp; 2472 struct lpfc_iocbq *nvmewqe; 2473 union lpfc_wqe128 *wqe; 2474 2475 if (!lpfc_is_link_up(phba)) { 2476 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2477 "6104 NVMET prep LS wqe: link err: " 2478 "NPORT x%x oxid:x%x ste %d\n", 2479 ctxp->sid, ctxp->oxid, ctxp->state); 2480 return NULL; 2481 } 2482 2483 /* Allocate buffer for command wqe */ 2484 nvmewqe = lpfc_sli_get_iocbq(phba); 2485 if (nvmewqe == NULL) { 2486 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2487 "6105 NVMET prep LS wqe: No WQE: " 2488 "NPORT x%x oxid x%x ste %d\n", 2489 ctxp->sid, ctxp->oxid, ctxp->state); 2490 return NULL; 2491 } 2492 2493 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 2494 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 2495 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 2496 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 2497 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC, 2498 "6106 NVMET prep LS wqe: No ndlp: " 2499 "NPORT x%x oxid x%x ste %d\n", 2500 ctxp->sid, ctxp->oxid, ctxp->state); 2501 goto nvme_wqe_free_wqeq_exit; 2502 } 2503 ctxp->wqeq = nvmewqe; 2504 2505 /* prevent preparing wqe with NULL ndlp reference */ 2506 nvmewqe->context1 = lpfc_nlp_get(ndlp); 2507 if (nvmewqe->context1 == NULL) 2508 goto nvme_wqe_free_wqeq_exit; 2509 nvmewqe->context2 = ctxp; 2510 2511 wqe = &nvmewqe->wqe; 2512 memset(wqe, 0, sizeof(union lpfc_wqe)); 2513 2514 /* Words 0 - 2 */ 2515 wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2516 wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize; 2517 wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf)); 2518 wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf)); 2519 2520 /* Word 3 */ 2521 2522 /* Word 4 */ 2523 2524 /* Word 5 */ 2525 bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0); 2526 bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1); 2527 bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0); 2528 bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP); 2529 bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME); 2530 2531 /* Word 6 */ 2532 bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, 2533 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2534 bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag); 2535 2536 /* Word 7 */ 2537 bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com, 2538 CMD_XMIT_SEQUENCE64_WQE); 2539 bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI); 2540 bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3); 2541 bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0); 2542 2543 /* Word 8 */ 2544 wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag; 2545 2546 /* Word 9 */ 2547 bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag); 2548 /* Needs to be set by caller */ 2549 bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid); 2550 2551 /* Word 10 */ 2552 bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1); 2553 bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); 2554 bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com, 2555 LPFC_WQE_LENLOC_WORD12); 2556 bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0); 2557 2558 /* Word 11 */ 2559 bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com, 2560 LPFC_WQE_CQ_ID_DEFAULT); 2561 bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com, 2562 OTHER_COMMAND); 2563 2564 /* Word 12 */ 2565 wqe->xmit_sequence.xmit_len = rspsize; 2566 2567 nvmewqe->retry = 1; 2568 nvmewqe->vport = phba->pport; 2569 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; 2570 nvmewqe->iocb_flag |= LPFC_IO_NVME_LS; 2571 2572 /* Xmit NVMET response to remote NPORT <did> */ 2573 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, 2574 "6039 Xmit NVMET LS response to remote " 2575 "NPORT x%x iotag:x%x oxid:x%x size:x%x\n", 2576 ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid, 2577 rspsize); 2578 return nvmewqe; 2579 2580 nvme_wqe_free_wqeq_exit: 2581 nvmewqe->context2 = NULL; 2582 nvmewqe->context3 = NULL; 2583 lpfc_sli_release_iocbq(phba, nvmewqe); 2584 return NULL; 2585 } 2586 2587 2588 static struct lpfc_iocbq * 2589 lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba, 2590 struct lpfc_nvmet_rcv_ctx *ctxp) 2591 { 2592 struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.fcp_req; 2593 struct lpfc_nvmet_tgtport *tgtp; 2594 struct sli4_sge *sgl; 2595 struct lpfc_nodelist *ndlp; 2596 struct lpfc_iocbq *nvmewqe; 2597 struct scatterlist *sgel; 2598 union lpfc_wqe128 *wqe; 2599 struct ulp_bde64 *bde; 2600 dma_addr_t physaddr; 2601 int i, cnt; 2602 int do_pbde; 2603 int xc = 1; 2604 2605 if (!lpfc_is_link_up(phba)) { 2606 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2607 "6107 NVMET prep FCP wqe: link err:" 2608 "NPORT x%x oxid x%x ste %d\n", 2609 ctxp->sid, ctxp->oxid, ctxp->state); 2610 return NULL; 2611 } 2612 2613 ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); 2614 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 2615 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 2616 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 2617 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2618 "6108 NVMET prep FCP wqe: no ndlp: " 2619 "NPORT x%x oxid x%x ste %d\n", 2620 ctxp->sid, ctxp->oxid, ctxp->state); 2621 return NULL; 2622 } 2623 2624 if (rsp->sg_cnt > lpfc_tgttemplate.max_sgl_segments) { 2625 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2626 "6109 NVMET prep FCP wqe: seg cnt err: " 2627 "NPORT x%x oxid x%x ste %d cnt %d\n", 2628 ctxp->sid, ctxp->oxid, ctxp->state, 2629 phba->cfg_nvme_seg_cnt); 2630 return NULL; 2631 } 2632 2633 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2634 nvmewqe = ctxp->wqeq; 2635 if (nvmewqe == NULL) { 2636 /* Allocate buffer for command wqe */ 2637 nvmewqe = ctxp->ctxbuf->iocbq; 2638 if (nvmewqe == NULL) { 2639 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2640 "6110 NVMET prep FCP wqe: No " 2641 "WQE: NPORT x%x oxid x%x ste %d\n", 2642 ctxp->sid, ctxp->oxid, ctxp->state); 2643 return NULL; 2644 } 2645 ctxp->wqeq = nvmewqe; 2646 xc = 0; /* create new XRI */ 2647 nvmewqe->sli4_lxritag = NO_XRI; 2648 nvmewqe->sli4_xritag = NO_XRI; 2649 } 2650 2651 /* Sanity check */ 2652 if (((ctxp->state == LPFC_NVMET_STE_RCV) && 2653 (ctxp->entry_cnt == 1)) || 2654 (ctxp->state == LPFC_NVMET_STE_DATA)) { 2655 wqe = &nvmewqe->wqe; 2656 } else { 2657 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 2658 "6111 Wrong state NVMET FCP: %d cnt %d\n", 2659 ctxp->state, ctxp->entry_cnt); 2660 return NULL; 2661 } 2662 2663 sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl; 2664 switch (rsp->op) { 2665 case NVMET_FCOP_READDATA: 2666 case NVMET_FCOP_READDATA_RSP: 2667 /* From the tsend template, initialize words 7 - 11 */ 2668 memcpy(&wqe->words[7], 2669 &lpfc_tsend_cmd_template.words[7], 2670 sizeof(uint32_t) * 5); 2671 2672 /* Words 0 - 2 : The first sg segment */ 2673 sgel = &rsp->sg[0]; 2674 physaddr = sg_dma_address(sgel); 2675 wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2676 wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel); 2677 wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr)); 2678 wqe->fcp_tsend.bde.addrHigh = 2679 cpu_to_le32(putPaddrHigh(physaddr)); 2680 2681 /* Word 3 */ 2682 wqe->fcp_tsend.payload_offset_len = 0; 2683 2684 /* Word 4 */ 2685 wqe->fcp_tsend.relative_offset = ctxp->offset; 2686 2687 /* Word 5 */ 2688 wqe->fcp_tsend.reserved = 0; 2689 2690 /* Word 6 */ 2691 bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com, 2692 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2693 bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com, 2694 nvmewqe->sli4_xritag); 2695 2696 /* Word 7 - set ar later */ 2697 2698 /* Word 8 */ 2699 wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag; 2700 2701 /* Word 9 */ 2702 bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag); 2703 bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid); 2704 2705 /* Word 10 - set wqes later, in template xc=1 */ 2706 if (!xc) 2707 bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 0); 2708 2709 /* Word 11 - set sup, irsp, irsplen later */ 2710 do_pbde = 0; 2711 2712 /* Word 12 */ 2713 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; 2714 2715 /* Setup 2 SKIP SGEs */ 2716 sgl->addr_hi = 0; 2717 sgl->addr_lo = 0; 2718 sgl->word2 = 0; 2719 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2720 sgl->word2 = cpu_to_le32(sgl->word2); 2721 sgl->sge_len = 0; 2722 sgl++; 2723 sgl->addr_hi = 0; 2724 sgl->addr_lo = 0; 2725 sgl->word2 = 0; 2726 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2727 sgl->word2 = cpu_to_le32(sgl->word2); 2728 sgl->sge_len = 0; 2729 sgl++; 2730 if (rsp->op == NVMET_FCOP_READDATA_RSP) { 2731 atomic_inc(&tgtp->xmt_fcp_read_rsp); 2732 2733 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ 2734 2735 if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) { 2736 if (ndlp->nlp_flag & NLP_SUPPRESS_RSP) 2737 bf_set(wqe_sup, 2738 &wqe->fcp_tsend.wqe_com, 1); 2739 } else { 2740 bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1); 2741 bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1); 2742 bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 2743 ((rsp->rsplen >> 2) - 1)); 2744 memcpy(&wqe->words[16], rsp->rspaddr, 2745 rsp->rsplen); 2746 } 2747 } else { 2748 atomic_inc(&tgtp->xmt_fcp_read); 2749 2750 /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ 2751 bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0); 2752 } 2753 break; 2754 2755 case NVMET_FCOP_WRITEDATA: 2756 /* From the treceive template, initialize words 3 - 11 */ 2757 memcpy(&wqe->words[3], 2758 &lpfc_treceive_cmd_template.words[3], 2759 sizeof(uint32_t) * 9); 2760 2761 /* Words 0 - 2 : First SGE is skipped, set invalid BDE type */ 2762 wqe->fcp_treceive.bde.tus.f.bdeFlags = LPFC_SGE_TYPE_SKIP; 2763 wqe->fcp_treceive.bde.tus.f.bdeSize = 0; 2764 wqe->fcp_treceive.bde.addrLow = 0; 2765 wqe->fcp_treceive.bde.addrHigh = 0; 2766 2767 /* Word 4 */ 2768 wqe->fcp_treceive.relative_offset = ctxp->offset; 2769 2770 /* Word 6 */ 2771 bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com, 2772 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2773 bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com, 2774 nvmewqe->sli4_xritag); 2775 2776 /* Word 7 */ 2777 2778 /* Word 8 */ 2779 wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag; 2780 2781 /* Word 9 */ 2782 bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag); 2783 bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid); 2784 2785 /* Word 10 - in template xc=1 */ 2786 if (!xc) 2787 bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, 0); 2788 2789 /* Word 11 - set pbde later */ 2790 if (phba->cfg_enable_pbde) { 2791 do_pbde = 1; 2792 } else { 2793 bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 0); 2794 do_pbde = 0; 2795 } 2796 2797 /* Word 12 */ 2798 wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; 2799 2800 /* Setup 2 SKIP SGEs */ 2801 sgl->addr_hi = 0; 2802 sgl->addr_lo = 0; 2803 sgl->word2 = 0; 2804 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2805 sgl->word2 = cpu_to_le32(sgl->word2); 2806 sgl->sge_len = 0; 2807 sgl++; 2808 sgl->addr_hi = 0; 2809 sgl->addr_lo = 0; 2810 sgl->word2 = 0; 2811 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); 2812 sgl->word2 = cpu_to_le32(sgl->word2); 2813 sgl->sge_len = 0; 2814 sgl++; 2815 atomic_inc(&tgtp->xmt_fcp_write); 2816 break; 2817 2818 case NVMET_FCOP_RSP: 2819 /* From the treceive template, initialize words 4 - 11 */ 2820 memcpy(&wqe->words[4], 2821 &lpfc_trsp_cmd_template.words[4], 2822 sizeof(uint32_t) * 8); 2823 2824 /* Words 0 - 2 */ 2825 physaddr = rsp->rspdma; 2826 wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2827 wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen; 2828 wqe->fcp_trsp.bde.addrLow = 2829 cpu_to_le32(putPaddrLow(physaddr)); 2830 wqe->fcp_trsp.bde.addrHigh = 2831 cpu_to_le32(putPaddrHigh(physaddr)); 2832 2833 /* Word 3 */ 2834 wqe->fcp_trsp.response_len = rsp->rsplen; 2835 2836 /* Word 6 */ 2837 bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com, 2838 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 2839 bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com, 2840 nvmewqe->sli4_xritag); 2841 2842 /* Word 7 */ 2843 2844 /* Word 8 */ 2845 wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag; 2846 2847 /* Word 9 */ 2848 bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag); 2849 bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid); 2850 2851 /* Word 10 */ 2852 if (xc) 2853 bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 1); 2854 2855 /* Word 11 */ 2856 /* In template wqes=0 irsp=0 irsplen=0 - good response */ 2857 if (rsp->rsplen != LPFC_NVMET_SUCCESS_LEN) { 2858 /* Bad response - embed it */ 2859 bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1); 2860 bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1); 2861 bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 2862 ((rsp->rsplen >> 2) - 1)); 2863 memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen); 2864 } 2865 do_pbde = 0; 2866 2867 /* Word 12 */ 2868 wqe->fcp_trsp.rsvd_12_15[0] = 0; 2869 2870 /* Use rspbuf, NOT sg list */ 2871 rsp->sg_cnt = 0; 2872 sgl->word2 = 0; 2873 atomic_inc(&tgtp->xmt_fcp_rsp); 2874 break; 2875 2876 default: 2877 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, 2878 "6064 Unknown Rsp Op %d\n", 2879 rsp->op); 2880 return NULL; 2881 } 2882 2883 nvmewqe->retry = 1; 2884 nvmewqe->vport = phba->pport; 2885 nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; 2886 nvmewqe->context1 = ndlp; 2887 2888 for_each_sg(rsp->sg, sgel, rsp->sg_cnt, i) { 2889 physaddr = sg_dma_address(sgel); 2890 cnt = sg_dma_len(sgel); 2891 sgl->addr_hi = putPaddrHigh(physaddr); 2892 sgl->addr_lo = putPaddrLow(physaddr); 2893 sgl->word2 = 0; 2894 bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); 2895 bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset); 2896 if ((i+1) == rsp->sg_cnt) 2897 bf_set(lpfc_sli4_sge_last, sgl, 1); 2898 sgl->word2 = cpu_to_le32(sgl->word2); 2899 sgl->sge_len = cpu_to_le32(cnt); 2900 if (i == 0) { 2901 bde = (struct ulp_bde64 *)&wqe->words[13]; 2902 if (do_pbde) { 2903 /* Words 13-15 (PBDE) */ 2904 bde->addrLow = sgl->addr_lo; 2905 bde->addrHigh = sgl->addr_hi; 2906 bde->tus.f.bdeSize = 2907 le32_to_cpu(sgl->sge_len); 2908 bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; 2909 bde->tus.w = cpu_to_le32(bde->tus.w); 2910 } else { 2911 memset(bde, 0, sizeof(struct ulp_bde64)); 2912 } 2913 } 2914 sgl++; 2915 ctxp->offset += cnt; 2916 } 2917 ctxp->state = LPFC_NVMET_STE_DATA; 2918 ctxp->entry_cnt++; 2919 return nvmewqe; 2920 } 2921 2922 /** 2923 * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS 2924 * @phba: Pointer to HBA context object. 2925 * @cmdwqe: Pointer to driver command WQE object. 2926 * @wcqe: Pointer to driver response CQE object. 2927 * 2928 * The function is called from SLI ring event handler with no 2929 * lock held. This function is the completion handler for NVME ABTS for FCP cmds 2930 * The function frees memory resources used for the NVME commands. 2931 **/ 2932 static void 2933 lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 2934 struct lpfc_wcqe_complete *wcqe) 2935 { 2936 struct lpfc_nvmet_rcv_ctx *ctxp; 2937 struct lpfc_nvmet_tgtport *tgtp; 2938 uint32_t result; 2939 unsigned long flags; 2940 bool released = false; 2941 2942 ctxp = cmdwqe->context2; 2943 result = wcqe->parameter; 2944 2945 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 2946 if (ctxp->flag & LPFC_NVMET_ABORT_OP) 2947 atomic_inc(&tgtp->xmt_fcp_abort_cmpl); 2948 2949 spin_lock_irqsave(&ctxp->ctxlock, flags); 2950 ctxp->state = LPFC_NVMET_STE_DONE; 2951 2952 /* Check if we already received a free context call 2953 * and we have completed processing an abort situation. 2954 */ 2955 if ((ctxp->flag & LPFC_NVMET_CTX_RLS) && 2956 !(ctxp->flag & LPFC_NVMET_XBUSY)) { 2957 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 2958 list_del_init(&ctxp->list); 2959 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 2960 released = true; 2961 } 2962 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 2963 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 2964 atomic_inc(&tgtp->xmt_abort_rsp); 2965 2966 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 2967 "6165 ABORT cmpl: oxid x%x flg x%x (%d) " 2968 "WCQE: %08x %08x %08x %08x\n", 2969 ctxp->oxid, ctxp->flag, released, 2970 wcqe->word0, wcqe->total_data_placed, 2971 result, wcqe->word3); 2972 2973 cmdwqe->context2 = NULL; 2974 cmdwqe->context3 = NULL; 2975 /* 2976 * if transport has released ctx, then can reuse it. Otherwise, 2977 * will be recycled by transport release call. 2978 */ 2979 if (released) 2980 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 2981 2982 /* This is the iocbq for the abort, not the command */ 2983 lpfc_sli_release_iocbq(phba, cmdwqe); 2984 2985 /* Since iaab/iaar are NOT set, there is no work left. 2986 * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted 2987 * should have been called already. 2988 */ 2989 } 2990 2991 /** 2992 * lpfc_nvmet_unsol_fcp_abort_cmp - Completion handler for ABTS 2993 * @phba: Pointer to HBA context object. 2994 * @cmdwqe: Pointer to driver command WQE object. 2995 * @wcqe: Pointer to driver response CQE object. 2996 * 2997 * The function is called from SLI ring event handler with no 2998 * lock held. This function is the completion handler for NVME ABTS for FCP cmds 2999 * The function frees memory resources used for the NVME commands. 3000 **/ 3001 static void 3002 lpfc_nvmet_unsol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3003 struct lpfc_wcqe_complete *wcqe) 3004 { 3005 struct lpfc_nvmet_rcv_ctx *ctxp; 3006 struct lpfc_nvmet_tgtport *tgtp; 3007 unsigned long flags; 3008 uint32_t result; 3009 bool released = false; 3010 3011 ctxp = cmdwqe->context2; 3012 result = wcqe->parameter; 3013 3014 if (!ctxp) { 3015 /* if context is clear, related io alrady complete */ 3016 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3017 "6070 ABTS cmpl: WCQE: %08x %08x %08x %08x\n", 3018 wcqe->word0, wcqe->total_data_placed, 3019 result, wcqe->word3); 3020 return; 3021 } 3022 3023 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3024 spin_lock_irqsave(&ctxp->ctxlock, flags); 3025 if (ctxp->flag & LPFC_NVMET_ABORT_OP) 3026 atomic_inc(&tgtp->xmt_fcp_abort_cmpl); 3027 3028 /* Sanity check */ 3029 if (ctxp->state != LPFC_NVMET_STE_ABORT) { 3030 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3031 "6112 ABTS Wrong state:%d oxid x%x\n", 3032 ctxp->state, ctxp->oxid); 3033 } 3034 3035 /* Check if we already received a free context call 3036 * and we have completed processing an abort situation. 3037 */ 3038 ctxp->state = LPFC_NVMET_STE_DONE; 3039 if ((ctxp->flag & LPFC_NVMET_CTX_RLS) && 3040 !(ctxp->flag & LPFC_NVMET_XBUSY)) { 3041 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3042 list_del_init(&ctxp->list); 3043 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3044 released = true; 3045 } 3046 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3047 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3048 atomic_inc(&tgtp->xmt_abort_rsp); 3049 3050 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3051 "6316 ABTS cmpl oxid x%x flg x%x (%x) " 3052 "WCQE: %08x %08x %08x %08x\n", 3053 ctxp->oxid, ctxp->flag, released, 3054 wcqe->word0, wcqe->total_data_placed, 3055 result, wcqe->word3); 3056 3057 cmdwqe->context2 = NULL; 3058 cmdwqe->context3 = NULL; 3059 /* 3060 * if transport has released ctx, then can reuse it. Otherwise, 3061 * will be recycled by transport release call. 3062 */ 3063 if (released) 3064 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3065 3066 /* Since iaab/iaar are NOT set, there is no work left. 3067 * For LPFC_NVMET_XBUSY, lpfc_sli4_nvmet_xri_aborted 3068 * should have been called already. 3069 */ 3070 } 3071 3072 /** 3073 * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS 3074 * @phba: Pointer to HBA context object. 3075 * @cmdwqe: Pointer to driver command WQE object. 3076 * @wcqe: Pointer to driver response CQE object. 3077 * 3078 * The function is called from SLI ring event handler with no 3079 * lock held. This function is the completion handler for NVME ABTS for LS cmds 3080 * The function frees memory resources used for the NVME commands. 3081 **/ 3082 static void 3083 lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, 3084 struct lpfc_wcqe_complete *wcqe) 3085 { 3086 struct lpfc_nvmet_rcv_ctx *ctxp; 3087 struct lpfc_nvmet_tgtport *tgtp; 3088 uint32_t result; 3089 3090 ctxp = cmdwqe->context2; 3091 result = wcqe->parameter; 3092 3093 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3094 atomic_inc(&tgtp->xmt_ls_abort_cmpl); 3095 3096 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3097 "6083 Abort cmpl: ctx x%px WCQE:%08x %08x %08x %08x\n", 3098 ctxp, wcqe->word0, wcqe->total_data_placed, 3099 result, wcqe->word3); 3100 3101 if (!ctxp) { 3102 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3103 "6415 NVMET LS Abort No ctx: WCQE: " 3104 "%08x %08x %08x %08x\n", 3105 wcqe->word0, wcqe->total_data_placed, 3106 result, wcqe->word3); 3107 3108 lpfc_sli_release_iocbq(phba, cmdwqe); 3109 return; 3110 } 3111 3112 if (ctxp->state != LPFC_NVMET_STE_LS_ABORT) { 3113 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3114 "6416 NVMET LS abort cmpl state mismatch: " 3115 "oxid x%x: %d %d\n", 3116 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 3117 } 3118 3119 cmdwqe->context2 = NULL; 3120 cmdwqe->context3 = NULL; 3121 lpfc_sli_release_iocbq(phba, cmdwqe); 3122 kfree(ctxp); 3123 } 3124 3125 static int 3126 lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba, 3127 struct lpfc_nvmet_rcv_ctx *ctxp, 3128 uint32_t sid, uint16_t xri) 3129 { 3130 struct lpfc_nvmet_tgtport *tgtp; 3131 struct lpfc_iocbq *abts_wqeq; 3132 union lpfc_wqe128 *wqe_abts; 3133 struct lpfc_nodelist *ndlp; 3134 3135 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3136 "6067 ABTS: sid %x xri x%x/x%x\n", 3137 sid, xri, ctxp->wqeq->sli4_xritag); 3138 3139 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3140 3141 ndlp = lpfc_findnode_did(phba->pport, sid); 3142 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 3143 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 3144 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 3145 atomic_inc(&tgtp->xmt_abort_rsp_error); 3146 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3147 "6134 Drop ABTS - wrong NDLP state x%x.\n", 3148 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE); 3149 3150 /* No failure to an ABTS request. */ 3151 return 0; 3152 } 3153 3154 abts_wqeq = ctxp->wqeq; 3155 wqe_abts = &abts_wqeq->wqe; 3156 3157 /* 3158 * Since we zero the whole WQE, we need to ensure we set the WQE fields 3159 * that were initialized in lpfc_sli4_nvmet_alloc. 3160 */ 3161 memset(wqe_abts, 0, sizeof(union lpfc_wqe)); 3162 3163 /* Word 5 */ 3164 bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0); 3165 bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1); 3166 bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0); 3167 bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS); 3168 bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS); 3169 3170 /* Word 6 */ 3171 bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com, 3172 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); 3173 bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com, 3174 abts_wqeq->sli4_xritag); 3175 3176 /* Word 7 */ 3177 bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com, 3178 CMD_XMIT_SEQUENCE64_WQE); 3179 bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI); 3180 bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3); 3181 bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0); 3182 3183 /* Word 8 */ 3184 wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag; 3185 3186 /* Word 9 */ 3187 bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag); 3188 /* Needs to be set by caller */ 3189 bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri); 3190 3191 /* Word 10 */ 3192 bf_set(wqe_dbde, &wqe_abts->xmit_sequence.wqe_com, 1); 3193 bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); 3194 bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com, 3195 LPFC_WQE_LENLOC_WORD12); 3196 bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0); 3197 bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0); 3198 3199 /* Word 11 */ 3200 bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com, 3201 LPFC_WQE_CQ_ID_DEFAULT); 3202 bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com, 3203 OTHER_COMMAND); 3204 3205 abts_wqeq->vport = phba->pport; 3206 abts_wqeq->context1 = ndlp; 3207 abts_wqeq->context2 = ctxp; 3208 abts_wqeq->context3 = NULL; 3209 abts_wqeq->rsvd2 = 0; 3210 /* hba_wqidx should already be setup from command we are aborting */ 3211 abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR; 3212 abts_wqeq->iocb.ulpLe = 1; 3213 3214 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3215 "6069 Issue ABTS to xri x%x reqtag x%x\n", 3216 xri, abts_wqeq->iotag); 3217 return 1; 3218 } 3219 3220 static int 3221 lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba, 3222 struct lpfc_nvmet_rcv_ctx *ctxp, 3223 uint32_t sid, uint16_t xri) 3224 { 3225 struct lpfc_nvmet_tgtport *tgtp; 3226 struct lpfc_iocbq *abts_wqeq; 3227 struct lpfc_nodelist *ndlp; 3228 unsigned long flags; 3229 u8 opt; 3230 int rc; 3231 3232 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3233 if (!ctxp->wqeq) { 3234 ctxp->wqeq = ctxp->ctxbuf->iocbq; 3235 ctxp->wqeq->hba_wqidx = 0; 3236 } 3237 3238 ndlp = lpfc_findnode_did(phba->pport, sid); 3239 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || 3240 ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && 3241 (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { 3242 atomic_inc(&tgtp->xmt_abort_rsp_error); 3243 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3244 "6160 Drop ABORT - wrong NDLP state x%x.\n", 3245 (ndlp) ? ndlp->nlp_state : NLP_STE_MAX_STATE); 3246 3247 /* No failure to an ABTS request. */ 3248 spin_lock_irqsave(&ctxp->ctxlock, flags); 3249 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3250 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3251 return 0; 3252 } 3253 3254 /* Issue ABTS for this WQE based on iotag */ 3255 ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba); 3256 spin_lock_irqsave(&ctxp->ctxlock, flags); 3257 if (!ctxp->abort_wqeq) { 3258 atomic_inc(&tgtp->xmt_abort_rsp_error); 3259 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3260 "6161 ABORT failed: No wqeqs: " 3261 "xri: x%x\n", ctxp->oxid); 3262 /* No failure to an ABTS request. */ 3263 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3264 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3265 return 0; 3266 } 3267 abts_wqeq = ctxp->abort_wqeq; 3268 ctxp->state = LPFC_NVMET_STE_ABORT; 3269 opt = (ctxp->flag & LPFC_NVMET_ABTS_RCV) ? INHIBIT_ABORT : 0; 3270 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3271 3272 /* Announce entry to new IO submit field. */ 3273 lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, 3274 "6162 ABORT Request to rport DID x%06x " 3275 "for xri x%x x%x\n", 3276 ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag); 3277 3278 /* If the hba is getting reset, this flag is set. It is 3279 * cleared when the reset is complete and rings reestablished. 3280 */ 3281 spin_lock_irqsave(&phba->hbalock, flags); 3282 /* driver queued commands are in process of being flushed */ 3283 if (phba->hba_flag & HBA_IOQ_FLUSH) { 3284 spin_unlock_irqrestore(&phba->hbalock, flags); 3285 atomic_inc(&tgtp->xmt_abort_rsp_error); 3286 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 3287 "6163 Driver in reset cleanup - flushing " 3288 "NVME Req now. hba_flag x%x oxid x%x\n", 3289 phba->hba_flag, ctxp->oxid); 3290 lpfc_sli_release_iocbq(phba, abts_wqeq); 3291 spin_lock_irqsave(&ctxp->ctxlock, flags); 3292 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3293 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3294 return 0; 3295 } 3296 3297 /* Outstanding abort is in progress */ 3298 if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) { 3299 spin_unlock_irqrestore(&phba->hbalock, flags); 3300 atomic_inc(&tgtp->xmt_abort_rsp_error); 3301 lpfc_printf_log(phba, KERN_ERR, LOG_NVME, 3302 "6164 Outstanding NVME I/O Abort Request " 3303 "still pending on oxid x%x\n", 3304 ctxp->oxid); 3305 lpfc_sli_release_iocbq(phba, abts_wqeq); 3306 spin_lock_irqsave(&ctxp->ctxlock, flags); 3307 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3308 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3309 return 0; 3310 } 3311 3312 /* Ready - mark outstanding as aborted by driver. */ 3313 abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED; 3314 3315 lpfc_nvme_prep_abort_wqe(abts_wqeq, ctxp->wqeq->sli4_xritag, opt); 3316 3317 /* ABTS WQE must go to the same WQ as the WQE to be aborted */ 3318 abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx; 3319 abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp; 3320 abts_wqeq->iocb_cmpl = NULL; 3321 abts_wqeq->iocb_flag |= LPFC_IO_NVME; 3322 abts_wqeq->context2 = ctxp; 3323 abts_wqeq->vport = phba->pport; 3324 if (!ctxp->hdwq) 3325 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx]; 3326 3327 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3328 spin_unlock_irqrestore(&phba->hbalock, flags); 3329 if (rc == WQE_SUCCESS) { 3330 atomic_inc(&tgtp->xmt_abort_sol); 3331 return 0; 3332 } 3333 3334 atomic_inc(&tgtp->xmt_abort_rsp_error); 3335 spin_lock_irqsave(&ctxp->ctxlock, flags); 3336 ctxp->flag &= ~LPFC_NVMET_ABORT_OP; 3337 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3338 lpfc_sli_release_iocbq(phba, abts_wqeq); 3339 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3340 "6166 Failed ABORT issue_wqe with status x%x " 3341 "for oxid x%x.\n", 3342 rc, ctxp->oxid); 3343 return 1; 3344 } 3345 3346 static int 3347 lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba, 3348 struct lpfc_nvmet_rcv_ctx *ctxp, 3349 uint32_t sid, uint16_t xri) 3350 { 3351 struct lpfc_nvmet_tgtport *tgtp; 3352 struct lpfc_iocbq *abts_wqeq; 3353 unsigned long flags; 3354 bool released = false; 3355 int rc; 3356 3357 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3358 if (!ctxp->wqeq) { 3359 ctxp->wqeq = ctxp->ctxbuf->iocbq; 3360 ctxp->wqeq->hba_wqidx = 0; 3361 } 3362 3363 if (ctxp->state == LPFC_NVMET_STE_FREE) { 3364 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3365 "6417 NVMET ABORT ctx freed %d %d oxid x%x\n", 3366 ctxp->state, ctxp->entry_cnt, ctxp->oxid); 3367 rc = WQE_BUSY; 3368 goto aerr; 3369 } 3370 ctxp->state = LPFC_NVMET_STE_ABORT; 3371 ctxp->entry_cnt++; 3372 rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri); 3373 if (rc == 0) 3374 goto aerr; 3375 3376 spin_lock_irqsave(&phba->hbalock, flags); 3377 abts_wqeq = ctxp->wqeq; 3378 abts_wqeq->wqe_cmpl = lpfc_nvmet_unsol_fcp_abort_cmp; 3379 abts_wqeq->iocb_cmpl = NULL; 3380 abts_wqeq->iocb_flag |= LPFC_IO_NVMET; 3381 if (!ctxp->hdwq) 3382 ctxp->hdwq = &phba->sli4_hba.hdwq[abts_wqeq->hba_wqidx]; 3383 3384 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3385 spin_unlock_irqrestore(&phba->hbalock, flags); 3386 if (rc == WQE_SUCCESS) { 3387 return 0; 3388 } 3389 3390 aerr: 3391 spin_lock_irqsave(&ctxp->ctxlock, flags); 3392 if (ctxp->flag & LPFC_NVMET_CTX_RLS) { 3393 spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3394 list_del_init(&ctxp->list); 3395 spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); 3396 released = true; 3397 } 3398 ctxp->flag &= ~(LPFC_NVMET_ABORT_OP | LPFC_NVMET_CTX_RLS); 3399 spin_unlock_irqrestore(&ctxp->ctxlock, flags); 3400 3401 atomic_inc(&tgtp->xmt_abort_rsp_error); 3402 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3403 "6135 Failed to Issue ABTS for oxid x%x. Status x%x " 3404 "(%x)\n", 3405 ctxp->oxid, rc, released); 3406 if (released) 3407 lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); 3408 return 1; 3409 } 3410 3411 static int 3412 lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba, 3413 struct lpfc_nvmet_rcv_ctx *ctxp, 3414 uint32_t sid, uint16_t xri) 3415 { 3416 struct lpfc_nvmet_tgtport *tgtp; 3417 struct lpfc_iocbq *abts_wqeq; 3418 unsigned long flags; 3419 int rc; 3420 3421 if ((ctxp->state == LPFC_NVMET_STE_LS_RCV && ctxp->entry_cnt == 1) || 3422 (ctxp->state == LPFC_NVMET_STE_LS_RSP && ctxp->entry_cnt == 2)) { 3423 ctxp->state = LPFC_NVMET_STE_LS_ABORT; 3424 ctxp->entry_cnt++; 3425 } else { 3426 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR, 3427 "6418 NVMET LS abort state mismatch " 3428 "IO x%x: %d %d\n", 3429 ctxp->oxid, ctxp->state, ctxp->entry_cnt); 3430 ctxp->state = LPFC_NVMET_STE_LS_ABORT; 3431 } 3432 3433 tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; 3434 if (!ctxp->wqeq) { 3435 /* Issue ABTS for this WQE based on iotag */ 3436 ctxp->wqeq = lpfc_sli_get_iocbq(phba); 3437 if (!ctxp->wqeq) { 3438 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3439 "6068 Abort failed: No wqeqs: " 3440 "xri: x%x\n", xri); 3441 /* No failure to an ABTS request. */ 3442 kfree(ctxp); 3443 return 0; 3444 } 3445 } 3446 abts_wqeq = ctxp->wqeq; 3447 3448 if (lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri) == 0) { 3449 rc = WQE_BUSY; 3450 goto out; 3451 } 3452 3453 spin_lock_irqsave(&phba->hbalock, flags); 3454 abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp; 3455 abts_wqeq->iocb_cmpl = NULL; 3456 abts_wqeq->iocb_flag |= LPFC_IO_NVME_LS; 3457 rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, abts_wqeq); 3458 spin_unlock_irqrestore(&phba->hbalock, flags); 3459 if (rc == WQE_SUCCESS) { 3460 atomic_inc(&tgtp->xmt_abort_unsol); 3461 return 0; 3462 } 3463 out: 3464 atomic_inc(&tgtp->xmt_abort_rsp_error); 3465 abts_wqeq->context2 = NULL; 3466 abts_wqeq->context3 = NULL; 3467 lpfc_sli_release_iocbq(phba, abts_wqeq); 3468 kfree(ctxp); 3469 lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS, 3470 "6056 Failed to Issue ABTS. Status x%x\n", rc); 3471 return 0; 3472 } 3473