| /******************************************************************* |
| * This file is part of the Emulex Linux Device Driver for * |
| * Fibre Channel Host Bus Adapters. * |
| * Copyright (C) 2017-2021 Broadcom. All Rights Reserved. The term * |
| * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. * |
| * Copyright (C) 2004-2016 Emulex. All rights reserved. * |
| * EMULEX and SLI are trademarks of Emulex. * |
| * www.broadcom.com * |
| * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
| * * |
| * This program is free software; you can redistribute it and/or * |
| * modify it under the terms of version 2 of the GNU General * |
| * Public License as published by the Free Software Foundation. * |
| * This program is distributed in the hope that it will be useful. * |
| * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * |
| * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * |
| * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * |
| * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * |
| * TO BE LEGALLY INVALID. See the GNU General Public License for * |
| * more details, a copy of which can be found in the file COPYING * |
| * included with this package. * |
| ********************************************************************/ |
| #include <linux/pci.h> |
| #include <linux/slab.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <asm/unaligned.h> |
| #include <linux/crc-t10dif.h> |
| #include <net/checksum.h> |
| |
| #include <scsi/scsi.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_eh.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_tcq.h> |
| #include <scsi/scsi_transport_fc.h> |
| #include <scsi/fc/fc_fs.h> |
| |
| #include "lpfc_version.h" |
| #include "lpfc_hw4.h" |
| #include "lpfc_hw.h" |
| #include "lpfc_sli.h" |
| #include "lpfc_sli4.h" |
| #include "lpfc_nl.h" |
| #include "lpfc_disc.h" |
| #include "lpfc.h" |
| #include "lpfc_scsi.h" |
| #include "lpfc_nvme.h" |
| #include "lpfc_logmsg.h" |
| #include "lpfc_crtn.h" |
| #include "lpfc_vport.h" |
| #include "lpfc_debugfs.h" |
| |
| static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *, |
| struct lpfc_async_xchg_ctx *, |
| dma_addr_t rspbuf, |
| uint16_t rspsize); |
| static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *, |
| struct lpfc_async_xchg_ctx *); |
| static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *, |
| struct lpfc_async_xchg_ctx *, |
| uint32_t, uint16_t); |
| static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *, |
| struct lpfc_async_xchg_ctx *, |
| uint32_t, uint16_t); |
| static void lpfc_nvmet_wqfull_flush(struct lpfc_hba *, struct lpfc_queue *, |
| struct lpfc_async_xchg_ctx *); |
| static void lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *); |
| |
| static void lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf); |
| |
| static union lpfc_wqe128 lpfc_tsend_cmd_template; |
| static union lpfc_wqe128 lpfc_treceive_cmd_template; |
| static union lpfc_wqe128 lpfc_trsp_cmd_template; |
| |
| /* Setup WQE templates for NVME IOs */ |
| void |
| lpfc_nvmet_cmd_template(void) |
| { |
| union lpfc_wqe128 *wqe; |
| |
| /* TSEND template */ |
| wqe = &lpfc_tsend_cmd_template; |
| memset(wqe, 0, sizeof(union lpfc_wqe128)); |
| |
| /* Word 0, 1, 2 - BDE is variable */ |
| |
| /* Word 3 - payload_offset_len is zero */ |
| |
| /* Word 4 - relative_offset is variable */ |
| |
| /* Word 5 - is zero */ |
| |
| /* Word 6 - ctxt_tag, xri_tag is variable */ |
| |
| /* Word 7 - wqe_ar is variable */ |
| bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE); |
| bf_set(wqe_pu, &wqe->fcp_tsend.wqe_com, PARM_REL_OFF); |
| bf_set(wqe_class, &wqe->fcp_tsend.wqe_com, CLASS3); |
| bf_set(wqe_ct, &wqe->fcp_tsend.wqe_com, SLI4_CT_RPI); |
| bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1); |
| |
| /* Word 8 - abort_tag is variable */ |
| |
| /* Word 9 - reqtag, rcvoxid is variable */ |
| |
| /* Word 10 - wqes, xc is variable */ |
| bf_set(wqe_xchg, &wqe->fcp_tsend.wqe_com, LPFC_NVME_XCHG); |
| bf_set(wqe_dbde, &wqe->fcp_tsend.wqe_com, 1); |
| bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0); |
| bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1); |
| bf_set(wqe_iod, &wqe->fcp_tsend.wqe_com, LPFC_WQE_IOD_WRITE); |
| bf_set(wqe_lenloc, &wqe->fcp_tsend.wqe_com, LPFC_WQE_LENLOC_WORD12); |
| |
| /* Word 11 - sup, irsp, irsplen is variable */ |
| bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com, FCP_COMMAND_TSEND); |
| bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); |
| bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0); |
| bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0); |
| bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0); |
| bf_set(wqe_pbde, &wqe->fcp_tsend.wqe_com, 0); |
| |
| /* Word 12 - fcp_data_len is variable */ |
| |
| /* Word 13, 14, 15 - PBDE is zero */ |
| |
| /* TRECEIVE template */ |
| wqe = &lpfc_treceive_cmd_template; |
| memset(wqe, 0, sizeof(union lpfc_wqe128)); |
| |
| /* Word 0, 1, 2 - BDE is variable */ |
| |
| /* Word 3 */ |
| wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN; |
| |
| /* Word 4 - relative_offset is variable */ |
| |
| /* Word 5 - is zero */ |
| |
| /* Word 6 - ctxt_tag, xri_tag is variable */ |
| |
| /* Word 7 */ |
| bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com, CMD_FCP_TRECEIVE64_WQE); |
| bf_set(wqe_pu, &wqe->fcp_treceive.wqe_com, PARM_REL_OFF); |
| bf_set(wqe_class, &wqe->fcp_treceive.wqe_com, CLASS3); |
| bf_set(wqe_ct, &wqe->fcp_treceive.wqe_com, SLI4_CT_RPI); |
| bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0); |
| |
| /* Word 8 - abort_tag is variable */ |
| |
| /* Word 9 - reqtag, rcvoxid is variable */ |
| |
| /* Word 10 - xc is variable */ |
| bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1); |
| bf_set(wqe_wqes, &wqe->fcp_treceive.wqe_com, 0); |
| bf_set(wqe_xchg, &wqe->fcp_treceive.wqe_com, LPFC_NVME_XCHG); |
| bf_set(wqe_iod, &wqe->fcp_treceive.wqe_com, LPFC_WQE_IOD_READ); |
| bf_set(wqe_lenloc, &wqe->fcp_treceive.wqe_com, LPFC_WQE_LENLOC_WORD12); |
| bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 1); |
| |
| /* Word 11 - pbde is variable */ |
| bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com, FCP_COMMAND_TRECEIVE); |
| bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); |
| bf_set(wqe_sup, &wqe->fcp_treceive.wqe_com, 0); |
| bf_set(wqe_irsp, &wqe->fcp_treceive.wqe_com, 0); |
| bf_set(wqe_irsplen, &wqe->fcp_treceive.wqe_com, 0); |
| bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 1); |
| |
| /* Word 12 - fcp_data_len is variable */ |
| |
| /* Word 13, 14, 15 - PBDE is variable */ |
| |
| /* TRSP template */ |
| wqe = &lpfc_trsp_cmd_template; |
| memset(wqe, 0, sizeof(union lpfc_wqe128)); |
| |
| /* Word 0, 1, 2 - BDE is variable */ |
| |
| /* Word 3 - response_len is variable */ |
| |
| /* Word 4, 5 - is zero */ |
| |
| /* Word 6 - ctxt_tag, xri_tag is variable */ |
| |
| /* Word 7 */ |
| bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE); |
| bf_set(wqe_pu, &wqe->fcp_trsp.wqe_com, PARM_UNUSED); |
| bf_set(wqe_class, &wqe->fcp_trsp.wqe_com, CLASS3); |
| bf_set(wqe_ct, &wqe->fcp_trsp.wqe_com, SLI4_CT_RPI); |
| bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1); /* wqe_ar */ |
| |
| /* Word 8 - abort_tag is variable */ |
| |
| /* Word 9 - reqtag is variable */ |
| |
| /* Word 10 wqes, xc is variable */ |
| bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 1); |
| bf_set(wqe_xchg, &wqe->fcp_trsp.wqe_com, LPFC_NVME_XCHG); |
| bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 0); |
| bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 0); |
| bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_NONE); |
| bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com, LPFC_WQE_LENLOC_WORD3); |
| |
| /* Word 11 irsp, irsplen is variable */ |
| bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com, FCP_COMMAND_TRSP); |
| bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com, LPFC_WQE_CQ_ID_DEFAULT); |
| bf_set(wqe_sup, &wqe->fcp_trsp.wqe_com, 0); |
| bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 0); |
| bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, 0); |
| bf_set(wqe_pbde, &wqe->fcp_trsp.wqe_com, 0); |
| |
| /* Word 12, 13, 14, 15 - is zero */ |
| } |
| |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| static struct lpfc_async_xchg_ctx * |
| lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri) |
| { |
| struct lpfc_async_xchg_ctx *ctxp; |
| unsigned long iflag; |
| bool found = false; |
| |
| spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); |
| list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) { |
| if (ctxp->ctxbuf->sglq->sli4_xritag != xri) |
| continue; |
| |
| found = true; |
| break; |
| } |
| spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); |
| if (found) |
| return ctxp; |
| |
| return NULL; |
| } |
| |
| static struct lpfc_async_xchg_ctx * |
| lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid) |
| { |
| struct lpfc_async_xchg_ctx *ctxp; |
| unsigned long iflag; |
| bool found = false; |
| |
| spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); |
| list_for_each_entry(ctxp, &phba->sli4_hba.t_active_ctx_list, list) { |
| if (ctxp->oxid != oxid || ctxp->sid != sid) |
| continue; |
| |
| found = true; |
| break; |
| } |
| spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); |
| if (found) |
| return ctxp; |
| |
| return NULL; |
| } |
| #endif |
| |
| static void |
| lpfc_nvmet_defer_release(struct lpfc_hba *phba, |
| struct lpfc_async_xchg_ctx *ctxp) |
| { |
| lockdep_assert_held(&ctxp->ctxlock); |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6313 NVMET Defer ctx release oxid x%x flg x%x\n", |
| ctxp->oxid, ctxp->flag); |
| |
| if (ctxp->flag & LPFC_NVME_CTX_RLS) |
| return; |
| |
| ctxp->flag |= LPFC_NVME_CTX_RLS; |
| spin_lock(&phba->sli4_hba.t_active_list_lock); |
| list_del(&ctxp->list); |
| spin_unlock(&phba->sli4_hba.t_active_list_lock); |
| spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); |
| list_add_tail(&ctxp->list, &phba->sli4_hba.lpfc_abts_nvmet_ctx_list); |
| spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); |
| } |
| |
| /** |
| * __lpfc_nvme_xmt_ls_rsp_cmp - Generic completion handler for the |
| * transmission of an NVME LS response. |
| * @phba: Pointer to HBA context object. |
| * @cmdwqe: Pointer to driver command WQE object. |
| * @wcqe: Pointer to driver response CQE object. |
| * |
| * The function is called from SLI ring event handler with no |
| * lock held. The function frees memory resources used for the command |
| * used to send the NVME LS RSP. |
| **/ |
| void |
| __lpfc_nvme_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, |
| struct lpfc_wcqe_complete *wcqe) |
| { |
| struct lpfc_async_xchg_ctx *axchg = cmdwqe->context2; |
| struct nvmefc_ls_rsp *ls_rsp = &axchg->ls_rsp; |
| uint32_t status, result; |
| |
| status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; |
| result = wcqe->parameter; |
| |
| if (axchg->state != LPFC_NVME_STE_LS_RSP || axchg->entry_cnt != 2) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6410 NVMEx LS cmpl state mismatch IO x%x: " |
| "%d %d\n", |
| axchg->oxid, axchg->state, axchg->entry_cnt); |
| } |
| |
| lpfc_nvmeio_data(phba, "NVMEx LS CMPL: xri x%x stat x%x result x%x\n", |
| axchg->oxid, status, result); |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, |
| "6038 NVMEx LS rsp cmpl: %d %d oxid x%x\n", |
| status, result, axchg->oxid); |
| |
| lpfc_nlp_put(cmdwqe->context1); |
| cmdwqe->context2 = NULL; |
| cmdwqe->context3 = NULL; |
| lpfc_sli_release_iocbq(phba, cmdwqe); |
| ls_rsp->done(ls_rsp); |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, |
| "6200 NVMEx LS rsp cmpl done status %d oxid x%x\n", |
| status, axchg->oxid); |
| kfree(axchg); |
| } |
| |
| /** |
| * lpfc_nvmet_xmt_ls_rsp_cmp - Completion handler for LS Response |
| * @phba: Pointer to HBA context object. |
| * @cmdwqe: Pointer to driver command WQE object. |
| * @wcqe: Pointer to driver response CQE object. |
| * |
| * The function is called from SLI ring event handler with no |
| * lock held. This function is the completion handler for NVME LS commands |
| * The function updates any states and statistics, then calls the |
| * generic completion handler to free resources. |
| **/ |
| static void |
| lpfc_nvmet_xmt_ls_rsp_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, |
| struct lpfc_wcqe_complete *wcqe) |
| { |
| struct lpfc_nvmet_tgtport *tgtp; |
| uint32_t status, result; |
| |
| if (!phba->targetport) |
| goto finish; |
| |
| status = bf_get(lpfc_wcqe_c_status, wcqe) & LPFC_IOCB_STATUS_MASK; |
| result = wcqe->parameter; |
| |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| if (tgtp) { |
| if (status) { |
| atomic_inc(&tgtp->xmt_ls_rsp_error); |
| if (result == IOERR_ABORT_REQUESTED) |
| atomic_inc(&tgtp->xmt_ls_rsp_aborted); |
| if (bf_get(lpfc_wcqe_c_xb, wcqe)) |
| atomic_inc(&tgtp->xmt_ls_rsp_xb_set); |
| } else { |
| atomic_inc(&tgtp->xmt_ls_rsp_cmpl); |
| } |
| } |
| |
| finish: |
| __lpfc_nvme_xmt_ls_rsp_cmp(phba, cmdwqe, wcqe); |
| } |
| |
| /** |
| * lpfc_nvmet_ctxbuf_post - Repost a NVMET RQ DMA buffer and clean up context |
| * @phba: HBA buffer is associated with |
| * @ctx_buf: ctx buffer context |
| * |
| * Description: Frees the given DMA buffer in the appropriate way given by |
| * reposting it to its associated RQ so it can be reused. |
| * |
| * Notes: Takes phba->hbalock. Can be called with or without other locks held. |
| * |
| * Returns: None |
| **/ |
| void |
| lpfc_nvmet_ctxbuf_post(struct lpfc_hba *phba, struct lpfc_nvmet_ctxbuf *ctx_buf) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context; |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct fc_frame_header *fc_hdr; |
| struct rqb_dmabuf *nvmebuf; |
| struct lpfc_nvmet_ctx_info *infop; |
| uint32_t size, oxid, sid; |
| int cpu; |
| unsigned long iflag; |
| |
| if (ctxp->state == LPFC_NVME_STE_FREE) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6411 NVMET free, already free IO x%x: %d %d\n", |
| ctxp->oxid, ctxp->state, ctxp->entry_cnt); |
| } |
| |
| if (ctxp->rqb_buffer) { |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| nvmebuf = ctxp->rqb_buffer; |
| /* check if freed in another path whilst acquiring lock */ |
| if (nvmebuf) { |
| ctxp->rqb_buffer = NULL; |
| if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) { |
| ctxp->flag &= ~LPFC_NVME_CTX_REUSE_WQ; |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| nvmebuf->hrq->rqbp->rqb_free_buffer(phba, |
| nvmebuf); |
| } else { |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| /* repost */ |
| lpfc_rq_buf_free(phba, &nvmebuf->hbuf); |
| } |
| } else { |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| } |
| } |
| ctxp->state = LPFC_NVME_STE_FREE; |
| |
| spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); |
| if (phba->sli4_hba.nvmet_io_wait_cnt) { |
| list_remove_head(&phba->sli4_hba.lpfc_nvmet_io_wait_list, |
| nvmebuf, struct rqb_dmabuf, |
| hbuf.list); |
| phba->sli4_hba.nvmet_io_wait_cnt--; |
| spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, |
| iflag); |
| |
| fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); |
| oxid = be16_to_cpu(fc_hdr->fh_ox_id); |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| size = nvmebuf->bytes_recv; |
| sid = sli4_sid_from_fc_hdr(fc_hdr); |
| |
| ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context; |
| ctxp->wqeq = NULL; |
| ctxp->offset = 0; |
| ctxp->phba = phba; |
| ctxp->size = size; |
| ctxp->oxid = oxid; |
| ctxp->sid = sid; |
| ctxp->state = LPFC_NVME_STE_RCV; |
| ctxp->entry_cnt = 1; |
| ctxp->flag = 0; |
| ctxp->ctxbuf = ctx_buf; |
| ctxp->rqb_buffer = (void *)nvmebuf; |
| spin_lock_init(&ctxp->ctxlock); |
| |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| /* NOTE: isr time stamp is stale when context is re-assigned*/ |
| if (ctxp->ts_isr_cmd) { |
| ctxp->ts_cmd_nvme = 0; |
| ctxp->ts_nvme_data = 0; |
| ctxp->ts_data_wqput = 0; |
| ctxp->ts_isr_data = 0; |
| ctxp->ts_data_nvme = 0; |
| ctxp->ts_nvme_status = 0; |
| ctxp->ts_status_wqput = 0; |
| ctxp->ts_isr_status = 0; |
| ctxp->ts_status_nvme = 0; |
| } |
| #endif |
| atomic_inc(&tgtp->rcv_fcp_cmd_in); |
| |
| /* Indicate that a replacement buffer has been posted */ |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| ctxp->flag |= LPFC_NVME_CTX_REUSE_WQ; |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| |
| if (!queue_work(phba->wq, &ctx_buf->defer_work)) { |
| atomic_inc(&tgtp->rcv_fcp_cmd_drop); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6181 Unable to queue deferred work " |
| "for oxid x%x. " |
| "FCP Drop IO [x%x x%x x%x]\n", |
| ctxp->oxid, |
| atomic_read(&tgtp->rcv_fcp_cmd_in), |
| atomic_read(&tgtp->rcv_fcp_cmd_out), |
| atomic_read(&tgtp->xmt_fcp_release)); |
| |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| lpfc_nvmet_defer_release(phba, ctxp); |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); |
| } |
| return; |
| } |
| spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, iflag); |
| |
| /* |
| * Use the CPU context list, from the MRQ the IO was received on |
| * (ctxp->idx), to save context structure. |
| */ |
| spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); |
| list_del_init(&ctxp->list); |
| spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); |
| cpu = raw_smp_processor_id(); |
| infop = lpfc_get_ctx_list(phba, cpu, ctxp->idx); |
| spin_lock_irqsave(&infop->nvmet_ctx_list_lock, iflag); |
| list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); |
| infop->nvmet_ctx_list_cnt++; |
| spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, iflag); |
| #endif |
| } |
| |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| static void |
| lpfc_nvmet_ktime(struct lpfc_hba *phba, |
| struct lpfc_async_xchg_ctx *ctxp) |
| { |
| uint64_t seg1, seg2, seg3, seg4, seg5; |
| uint64_t seg6, seg7, seg8, seg9, seg10; |
| uint64_t segsum; |
| |
| if (!ctxp->ts_isr_cmd || !ctxp->ts_cmd_nvme || |
| !ctxp->ts_nvme_data || !ctxp->ts_data_wqput || |
| !ctxp->ts_isr_data || !ctxp->ts_data_nvme || |
| !ctxp->ts_nvme_status || !ctxp->ts_status_wqput || |
| !ctxp->ts_isr_status || !ctxp->ts_status_nvme) |
| return; |
| |
| if (ctxp->ts_status_nvme < ctxp->ts_isr_cmd) |
| return; |
| if (ctxp->ts_isr_cmd > ctxp->ts_cmd_nvme) |
| return; |
| if (ctxp->ts_cmd_nvme > ctxp->ts_nvme_data) |
| return; |
| if (ctxp->ts_nvme_data > ctxp->ts_data_wqput) |
| return; |
| if (ctxp->ts_data_wqput > ctxp->ts_isr_data) |
| return; |
| if (ctxp->ts_isr_data > ctxp->ts_data_nvme) |
| return; |
| if (ctxp->ts_data_nvme > ctxp->ts_nvme_status) |
| return; |
| if (ctxp->ts_nvme_status > ctxp->ts_status_wqput) |
| return; |
| if (ctxp->ts_status_wqput > ctxp->ts_isr_status) |
| return; |
| if (ctxp->ts_isr_status > ctxp->ts_status_nvme) |
| return; |
| /* |
| * Segment 1 - Time from FCP command received by MSI-X ISR |
| * to FCP command is passed to NVME Layer. |
| * Segment 2 - Time from FCP command payload handed |
| * off to NVME Layer to Driver receives a Command op |
| * from NVME Layer. |
| * Segment 3 - Time from Driver receives a Command op |
| * from NVME Layer to Command is put on WQ. |
| * Segment 4 - Time from Driver WQ put is done |
| * to MSI-X ISR for Command cmpl. |
| * Segment 5 - Time from MSI-X ISR for Command cmpl to |
| * Command cmpl is passed to NVME Layer. |
| * Segment 6 - Time from Command cmpl is passed to NVME |
| * Layer to Driver receives a RSP op from NVME Layer. |
| * Segment 7 - Time from Driver receives a RSP op from |
| * NVME Layer to WQ put is done on TRSP FCP Status. |
| * Segment 8 - Time from Driver WQ put is done on TRSP |
| * FCP Status to MSI-X ISR for TRSP cmpl. |
| * Segment 9 - Time from MSI-X ISR for TRSP cmpl to |
| * TRSP cmpl is passed to NVME Layer. |
| * Segment 10 - Time from FCP command received by |
| * MSI-X ISR to command is completed on wire. |
| * (Segments 1 thru 8) for READDATA / WRITEDATA |
| * (Segments 1 thru 4) for READDATA_RSP |
| */ |
| seg1 = ctxp->ts_cmd_nvme - ctxp->ts_isr_cmd; |
| segsum = seg1; |
| |
| seg2 = ctxp->ts_nvme_data - ctxp->ts_isr_cmd; |
| if (segsum > seg2) |
| return; |
| seg2 -= segsum; |
| segsum += seg2; |
| |
| seg3 = ctxp->ts_data_wqput - ctxp->ts_isr_cmd; |
| if (segsum > seg3) |
| return; |
| seg3 -= segsum; |
| segsum += seg3; |
| |
| seg4 = ctxp->ts_isr_data - ctxp->ts_isr_cmd; |
| if (segsum > seg4) |
| return; |
| seg4 -= segsum; |
| segsum += seg4; |
| |
| seg5 = ctxp->ts_data_nvme - ctxp->ts_isr_cmd; |
| if (segsum > seg5) |
| return; |
| seg5 -= segsum; |
| segsum += seg5; |
| |
| |
| /* For auto rsp commands seg6 thru seg10 will be 0 */ |
| if (ctxp->ts_nvme_status > ctxp->ts_data_nvme) { |
| seg6 = ctxp->ts_nvme_status - ctxp->ts_isr_cmd; |
| if (segsum > seg6) |
| return; |
| seg6 -= segsum; |
| segsum += seg6; |
| |
| seg7 = ctxp->ts_status_wqput - ctxp->ts_isr_cmd; |
| if (segsum > seg7) |
| return; |
| seg7 -= segsum; |
| segsum += seg7; |
| |
| seg8 = ctxp->ts_isr_status - ctxp->ts_isr_cmd; |
| if (segsum > seg8) |
| return; |
| seg8 -= segsum; |
| segsum += seg8; |
| |
| seg9 = ctxp->ts_status_nvme - ctxp->ts_isr_cmd; |
| if (segsum > seg9) |
| return; |
| seg9 -= segsum; |
| segsum += seg9; |
| |
| if (ctxp->ts_isr_status < ctxp->ts_isr_cmd) |
| return; |
| seg10 = (ctxp->ts_isr_status - |
| ctxp->ts_isr_cmd); |
| } else { |
| if (ctxp->ts_isr_data < ctxp->ts_isr_cmd) |
| return; |
| seg6 = 0; |
| seg7 = 0; |
| seg8 = 0; |
| seg9 = 0; |
| seg10 = (ctxp->ts_isr_data - ctxp->ts_isr_cmd); |
| } |
| |
| phba->ktime_seg1_total += seg1; |
| if (seg1 < phba->ktime_seg1_min) |
| phba->ktime_seg1_min = seg1; |
| else if (seg1 > phba->ktime_seg1_max) |
| phba->ktime_seg1_max = seg1; |
| |
| phba->ktime_seg2_total += seg2; |
| if (seg2 < phba->ktime_seg2_min) |
| phba->ktime_seg2_min = seg2; |
| else if (seg2 > phba->ktime_seg2_max) |
| phba->ktime_seg2_max = seg2; |
| |
| phba->ktime_seg3_total += seg3; |
| if (seg3 < phba->ktime_seg3_min) |
| phba->ktime_seg3_min = seg3; |
| else if (seg3 > phba->ktime_seg3_max) |
| phba->ktime_seg3_max = seg3; |
| |
| phba->ktime_seg4_total += seg4; |
| if (seg4 < phba->ktime_seg4_min) |
| phba->ktime_seg4_min = seg4; |
| else if (seg4 > phba->ktime_seg4_max) |
| phba->ktime_seg4_max = seg4; |
| |
| phba->ktime_seg5_total += seg5; |
| if (seg5 < phba->ktime_seg5_min) |
| phba->ktime_seg5_min = seg5; |
| else if (seg5 > phba->ktime_seg5_max) |
| phba->ktime_seg5_max = seg5; |
| |
| phba->ktime_data_samples++; |
| if (!seg6) |
| goto out; |
| |
| phba->ktime_seg6_total += seg6; |
| if (seg6 < phba->ktime_seg6_min) |
| phba->ktime_seg6_min = seg6; |
| else if (seg6 > phba->ktime_seg6_max) |
| phba->ktime_seg6_max = seg6; |
| |
| phba->ktime_seg7_total += seg7; |
| if (seg7 < phba->ktime_seg7_min) |
| phba->ktime_seg7_min = seg7; |
| else if (seg7 > phba->ktime_seg7_max) |
| phba->ktime_seg7_max = seg7; |
| |
| phba->ktime_seg8_total += seg8; |
| if (seg8 < phba->ktime_seg8_min) |
| phba->ktime_seg8_min = seg8; |
| else if (seg8 > phba->ktime_seg8_max) |
| phba->ktime_seg8_max = seg8; |
| |
| phba->ktime_seg9_total += seg9; |
| if (seg9 < phba->ktime_seg9_min) |
| phba->ktime_seg9_min = seg9; |
| else if (seg9 > phba->ktime_seg9_max) |
| phba->ktime_seg9_max = seg9; |
| out: |
| phba->ktime_seg10_total += seg10; |
| if (seg10 < phba->ktime_seg10_min) |
| phba->ktime_seg10_min = seg10; |
| else if (seg10 > phba->ktime_seg10_max) |
| phba->ktime_seg10_max = seg10; |
| phba->ktime_status_samples++; |
| } |
| #endif |
| |
| /** |
| * lpfc_nvmet_xmt_fcp_op_cmp - Completion handler for FCP Response |
| * @phba: Pointer to HBA context object. |
| * @cmdwqe: Pointer to driver command WQE object. |
| * @wcqe: Pointer to driver response CQE object. |
| * |
| * The function is called from SLI ring event handler with no |
| * lock held. This function is the completion handler for NVME FCP commands |
| * The function frees memory resources used for the NVME commands. |
| **/ |
| static void |
| lpfc_nvmet_xmt_fcp_op_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, |
| struct lpfc_wcqe_complete *wcqe) |
| { |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct nvmefc_tgt_fcp_req *rsp; |
| struct lpfc_async_xchg_ctx *ctxp; |
| uint32_t status, result, op, start_clean, logerr; |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| int id; |
| #endif |
| |
| ctxp = cmdwqe->context2; |
| ctxp->flag &= ~LPFC_NVME_IO_INP; |
| |
| rsp = &ctxp->hdlrctx.fcp_req; |
| op = rsp->op; |
| |
| status = bf_get(lpfc_wcqe_c_status, wcqe); |
| result = wcqe->parameter; |
| |
| if (phba->targetport) |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| else |
| tgtp = NULL; |
| |
| lpfc_nvmeio_data(phba, "NVMET FCP CMPL: xri x%x op x%x status x%x\n", |
| ctxp->oxid, op, status); |
| |
| if (status) { |
| rsp->fcp_error = NVME_SC_DATA_XFER_ERROR; |
| rsp->transferred_length = 0; |
| if (tgtp) { |
| atomic_inc(&tgtp->xmt_fcp_rsp_error); |
| if (result == IOERR_ABORT_REQUESTED) |
| atomic_inc(&tgtp->xmt_fcp_rsp_aborted); |
| } |
| |
| logerr = LOG_NVME_IOERR; |
| |
| /* pick up SLI4 exhange busy condition */ |
| if (bf_get(lpfc_wcqe_c_xb, wcqe)) { |
| ctxp->flag |= LPFC_NVME_XBUSY; |
| logerr |= LOG_NVME_ABTS; |
| if (tgtp) |
| atomic_inc(&tgtp->xmt_fcp_rsp_xb_set); |
| |
| } else { |
| ctxp->flag &= ~LPFC_NVME_XBUSY; |
| } |
| |
| lpfc_printf_log(phba, KERN_INFO, logerr, |
| "6315 IO Error Cmpl oxid: x%x xri: x%x %x/%x " |
| "XBUSY:x%x\n", |
| ctxp->oxid, ctxp->ctxbuf->sglq->sli4_xritag, |
| status, result, ctxp->flag); |
| |
| } else { |
| rsp->fcp_error = NVME_SC_SUCCESS; |
| if (op == NVMET_FCOP_RSP) |
| rsp->transferred_length = rsp->rsplen; |
| else |
| rsp->transferred_length = rsp->transfer_length; |
| if (tgtp) |
| atomic_inc(&tgtp->xmt_fcp_rsp_cmpl); |
| } |
| |
| if ((op == NVMET_FCOP_READDATA_RSP) || |
| (op == NVMET_FCOP_RSP)) { |
| /* Sanity check */ |
| ctxp->state = LPFC_NVME_STE_DONE; |
| ctxp->entry_cnt++; |
| |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (ctxp->ts_cmd_nvme) { |
| if (rsp->op == NVMET_FCOP_READDATA_RSP) { |
| ctxp->ts_isr_data = |
| cmdwqe->isr_timestamp; |
| ctxp->ts_data_nvme = |
| ktime_get_ns(); |
| ctxp->ts_nvme_status = |
| ctxp->ts_data_nvme; |
| ctxp->ts_status_wqput = |
| ctxp->ts_data_nvme; |
| ctxp->ts_isr_status = |
| ctxp->ts_data_nvme; |
| ctxp->ts_status_nvme = |
| ctxp->ts_data_nvme; |
| } else { |
| ctxp->ts_isr_status = |
| cmdwqe->isr_timestamp; |
| ctxp->ts_status_nvme = |
| ktime_get_ns(); |
| } |
| } |
| #endif |
| rsp->done(rsp); |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (ctxp->ts_cmd_nvme) |
| lpfc_nvmet_ktime(phba, ctxp); |
| #endif |
| /* lpfc_nvmet_xmt_fcp_release() will recycle the context */ |
| } else { |
| ctxp->entry_cnt++; |
| start_clean = offsetof(struct lpfc_iocbq, iocb_flag); |
| memset(((char *)cmdwqe) + start_clean, 0, |
| (sizeof(struct lpfc_iocbq) - start_clean)); |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (ctxp->ts_cmd_nvme) { |
| ctxp->ts_isr_data = cmdwqe->isr_timestamp; |
| ctxp->ts_data_nvme = ktime_get_ns(); |
| } |
| #endif |
| rsp->done(rsp); |
| } |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { |
| id = raw_smp_processor_id(); |
| this_cpu_inc(phba->sli4_hba.c_stat->cmpl_io); |
| if (ctxp->cpu != id) |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, |
| "6704 CPU Check cmdcmpl: " |
| "cpu %d expect %d\n", |
| id, ctxp->cpu); |
| } |
| #endif |
| } |
| |
| /** |
| * __lpfc_nvme_xmt_ls_rsp - Generic service routine to issue transmit |
| * an NVME LS rsp for a prior NVME LS request that was received. |
| * @axchg: pointer to exchange context for the NVME LS request the response |
| * is for. |
| * @ls_rsp: pointer to the transport LS RSP that is to be sent |
| * @xmt_ls_rsp_cmp: completion routine to call upon RSP transmit done |
| * |
| * This routine is used to format and send a WQE to transmit a NVME LS |
| * Response. The response is for a prior NVME LS request that was |
| * received and posted to the transport. |
| * |
| * Returns: |
| * 0 : if response successfully transmit |
| * non-zero : if response failed to transmit, of the form -Exxx. |
| **/ |
| int |
| __lpfc_nvme_xmt_ls_rsp(struct lpfc_async_xchg_ctx *axchg, |
| struct nvmefc_ls_rsp *ls_rsp, |
| void (*xmt_ls_rsp_cmp)(struct lpfc_hba *phba, |
| struct lpfc_iocbq *cmdwqe, |
| struct lpfc_wcqe_complete *wcqe)) |
| { |
| struct lpfc_hba *phba = axchg->phba; |
| struct hbq_dmabuf *nvmebuf = (struct hbq_dmabuf *)axchg->rqb_buffer; |
| struct lpfc_iocbq *nvmewqeq; |
| struct lpfc_dmabuf dmabuf; |
| struct ulp_bde64 bpl; |
| int rc; |
| |
| if (phba->pport->load_flag & FC_UNLOADING) |
| return -ENODEV; |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, |
| "6023 NVMEx LS rsp oxid x%x\n", axchg->oxid); |
| |
| if (axchg->state != LPFC_NVME_STE_LS_RCV || axchg->entry_cnt != 1) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6412 NVMEx LS rsp state mismatch " |
| "oxid x%x: %d %d\n", |
| axchg->oxid, axchg->state, axchg->entry_cnt); |
| return -EALREADY; |
| } |
| axchg->state = LPFC_NVME_STE_LS_RSP; |
| axchg->entry_cnt++; |
| |
| nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, axchg, ls_rsp->rspdma, |
| ls_rsp->rsplen); |
| if (nvmewqeq == NULL) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6150 NVMEx LS Drop Rsp x%x: Prep\n", |
| axchg->oxid); |
| rc = -ENOMEM; |
| goto out_free_buf; |
| } |
| |
| /* Save numBdes for bpl2sgl */ |
| nvmewqeq->rsvd2 = 1; |
| nvmewqeq->hba_wqidx = 0; |
| nvmewqeq->context3 = &dmabuf; |
| dmabuf.virt = &bpl; |
| bpl.addrLow = nvmewqeq->wqe.xmit_sequence.bde.addrLow; |
| bpl.addrHigh = nvmewqeq->wqe.xmit_sequence.bde.addrHigh; |
| bpl.tus.f.bdeSize = ls_rsp->rsplen; |
| bpl.tus.f.bdeFlags = 0; |
| bpl.tus.w = le32_to_cpu(bpl.tus.w); |
| /* |
| * Note: although we're using stack space for the dmabuf, the |
| * call to lpfc_sli4_issue_wqe is synchronous, so it will not |
| * be referenced after it returns back to this routine. |
| */ |
| |
| nvmewqeq->wqe_cmpl = xmt_ls_rsp_cmp; |
| nvmewqeq->iocb_cmpl = NULL; |
| nvmewqeq->context2 = axchg; |
| |
| lpfc_nvmeio_data(phba, "NVMEx LS RSP: xri x%x wqidx x%x len x%x\n", |
| axchg->oxid, nvmewqeq->hba_wqidx, ls_rsp->rsplen); |
| |
| rc = lpfc_sli4_issue_wqe(phba, axchg->hdwq, nvmewqeq); |
| |
| /* clear to be sure there's no reference */ |
| nvmewqeq->context3 = NULL; |
| |
| if (rc == WQE_SUCCESS) { |
| /* |
| * Okay to repost buffer here, but wait till cmpl |
| * before freeing ctxp and iocbq. |
| */ |
| lpfc_in_buf_free(phba, &nvmebuf->dbuf); |
| return 0; |
| } |
| |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6151 NVMEx LS RSP x%x: failed to transmit %d\n", |
| axchg->oxid, rc); |
| |
| rc = -ENXIO; |
| |
| lpfc_nlp_put(nvmewqeq->context1); |
| |
| out_free_buf: |
| /* Give back resources */ |
| lpfc_in_buf_free(phba, &nvmebuf->dbuf); |
| |
| /* |
| * As transport doesn't track completions of responses, if the rsp |
| * fails to send, the transport will effectively ignore the rsp |
| * and consider the LS done. However, the driver has an active |
| * exchange open for the LS - so be sure to abort the exchange |
| * if the response isn't sent. |
| */ |
| lpfc_nvme_unsol_ls_issue_abort(phba, axchg, axchg->sid, axchg->oxid); |
| return rc; |
| } |
| |
| /** |
| * lpfc_nvmet_xmt_ls_rsp - Transmit NVME LS response |
| * @tgtport: pointer to target port that NVME LS is to be transmit from. |
| * @ls_rsp: pointer to the transport LS RSP that is to be sent |
| * |
| * Driver registers this routine to transmit responses for received NVME |
| * LS requests. |
| * |
| * This routine is used to format and send a WQE to transmit a NVME LS |
| * Response. The ls_rsp is used to reverse-map the LS to the original |
| * NVME LS request sequence, which provides addressing information for |
| * the remote port the LS to be sent to, as well as the exchange id |
| * that is the LS is bound to. |
| * |
| * Returns: |
| * 0 : if response successfully transmit |
| * non-zero : if response failed to transmit, of the form -Exxx. |
| **/ |
| static int |
| lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport, |
| struct nvmefc_ls_rsp *ls_rsp) |
| { |
| struct lpfc_async_xchg_ctx *axchg = |
| container_of(ls_rsp, struct lpfc_async_xchg_ctx, ls_rsp); |
| struct lpfc_nvmet_tgtport *nvmep = tgtport->private; |
| int rc; |
| |
| if (axchg->phba->pport->load_flag & FC_UNLOADING) |
| return -ENODEV; |
| |
| rc = __lpfc_nvme_xmt_ls_rsp(axchg, ls_rsp, lpfc_nvmet_xmt_ls_rsp_cmp); |
| |
| if (rc) { |
| atomic_inc(&nvmep->xmt_ls_drop); |
| /* |
| * unless the failure is due to having already sent |
| * the response, an abort will be generated for the |
| * exchange if the rsp can't be sent. |
| */ |
| if (rc != -EALREADY) |
| atomic_inc(&nvmep->xmt_ls_abort); |
| return rc; |
| } |
| |
| atomic_inc(&nvmep->xmt_ls_rsp); |
| return 0; |
| } |
| |
| static int |
| lpfc_nvmet_xmt_fcp_op(struct nvmet_fc_target_port *tgtport, |
| struct nvmefc_tgt_fcp_req *rsp) |
| { |
| struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; |
| struct lpfc_async_xchg_ctx *ctxp = |
| container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req); |
| struct lpfc_hba *phba = ctxp->phba; |
| struct lpfc_queue *wq; |
| struct lpfc_iocbq *nvmewqeq; |
| struct lpfc_sli_ring *pring; |
| unsigned long iflags; |
| int rc; |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| int id; |
| #endif |
| |
| if (phba->pport->load_flag & FC_UNLOADING) { |
| rc = -ENODEV; |
| goto aerr; |
| } |
| |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (ctxp->ts_cmd_nvme) { |
| if (rsp->op == NVMET_FCOP_RSP) |
| ctxp->ts_nvme_status = ktime_get_ns(); |
| else |
| ctxp->ts_nvme_data = ktime_get_ns(); |
| } |
| |
| /* Setup the hdw queue if not already set */ |
| if (!ctxp->hdwq) |
| ctxp->hdwq = &phba->sli4_hba.hdwq[rsp->hwqid]; |
| |
| if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { |
| id = raw_smp_processor_id(); |
| this_cpu_inc(phba->sli4_hba.c_stat->xmt_io); |
| if (rsp->hwqid != id) |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, |
| "6705 CPU Check OP: " |
| "cpu %d expect %d\n", |
| id, rsp->hwqid); |
| ctxp->cpu = id; /* Setup cpu for cmpl check */ |
| } |
| #endif |
| |
| /* Sanity check */ |
| if ((ctxp->flag & LPFC_NVME_ABTS_RCV) || |
| (ctxp->state == LPFC_NVME_STE_ABORT)) { |
| atomic_inc(&lpfc_nvmep->xmt_fcp_drop); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6102 IO oxid x%x aborted\n", |
| ctxp->oxid); |
| rc = -ENXIO; |
| goto aerr; |
| } |
| |
| nvmewqeq = lpfc_nvmet_prep_fcp_wqe(phba, ctxp); |
| if (nvmewqeq == NULL) { |
| atomic_inc(&lpfc_nvmep->xmt_fcp_drop); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6152 FCP Drop IO x%x: Prep\n", |
| ctxp->oxid); |
| rc = -ENXIO; |
| goto aerr; |
| } |
| |
| nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_op_cmp; |
| nvmewqeq->iocb_cmpl = NULL; |
| nvmewqeq->context2 = ctxp; |
| nvmewqeq->iocb_flag |= LPFC_IO_NVMET; |
| ctxp->wqeq->hba_wqidx = rsp->hwqid; |
| |
| lpfc_nvmeio_data(phba, "NVMET FCP CMND: xri x%x op x%x len x%x\n", |
| ctxp->oxid, rsp->op, rsp->rsplen); |
| |
| ctxp->flag |= LPFC_NVME_IO_INP; |
| rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); |
| if (rc == WQE_SUCCESS) { |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (!ctxp->ts_cmd_nvme) |
| return 0; |
| if (rsp->op == NVMET_FCOP_RSP) |
| ctxp->ts_status_wqput = ktime_get_ns(); |
| else |
| ctxp->ts_data_wqput = ktime_get_ns(); |
| #endif |
| return 0; |
| } |
| |
| if (rc == -EBUSY) { |
| /* |
| * WQ was full, so queue nvmewqeq to be sent after |
| * WQE release CQE |
| */ |
| ctxp->flag |= LPFC_NVME_DEFER_WQFULL; |
| wq = ctxp->hdwq->io_wq; |
| pring = wq->pring; |
| spin_lock_irqsave(&pring->ring_lock, iflags); |
| list_add_tail(&nvmewqeq->list, &wq->wqfull_list); |
| wq->q_flag |= HBA_NVMET_WQFULL; |
| spin_unlock_irqrestore(&pring->ring_lock, iflags); |
| atomic_inc(&lpfc_nvmep->defer_wqfull); |
| return 0; |
| } |
| |
| /* Give back resources */ |
| atomic_inc(&lpfc_nvmep->xmt_fcp_drop); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6153 FCP Drop IO x%x: Issue: %d\n", |
| ctxp->oxid, rc); |
| |
| ctxp->wqeq->hba_wqidx = 0; |
| nvmewqeq->context2 = NULL; |
| nvmewqeq->context3 = NULL; |
| rc = -EBUSY; |
| aerr: |
| return rc; |
| } |
| |
| static void |
| lpfc_nvmet_targetport_delete(struct nvmet_fc_target_port *targetport) |
| { |
| struct lpfc_nvmet_tgtport *tport = targetport->private; |
| |
| /* release any threads waiting for the unreg to complete */ |
| if (tport->phba->targetport) |
| complete(tport->tport_unreg_cmp); |
| } |
| |
| static void |
| lpfc_nvmet_xmt_fcp_abort(struct nvmet_fc_target_port *tgtport, |
| struct nvmefc_tgt_fcp_req *req) |
| { |
| struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; |
| struct lpfc_async_xchg_ctx *ctxp = |
| container_of(req, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req); |
| struct lpfc_hba *phba = ctxp->phba; |
| struct lpfc_queue *wq; |
| unsigned long flags; |
| |
| if (phba->pport->load_flag & FC_UNLOADING) |
| return; |
| |
| if (!ctxp->hdwq) |
| ctxp->hdwq = &phba->sli4_hba.hdwq[0]; |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6103 NVMET Abort op: oxid x%x flg x%x ste %d\n", |
| ctxp->oxid, ctxp->flag, ctxp->state); |
| |
| lpfc_nvmeio_data(phba, "NVMET FCP ABRT: xri x%x flg x%x ste x%x\n", |
| ctxp->oxid, ctxp->flag, ctxp->state); |
| |
| atomic_inc(&lpfc_nvmep->xmt_fcp_abort); |
| |
| spin_lock_irqsave(&ctxp->ctxlock, flags); |
| |
| /* Since iaab/iaar are NOT set, we need to check |
| * if the firmware is in process of aborting IO |
| */ |
| if (ctxp->flag & (LPFC_NVME_XBUSY | LPFC_NVME_ABORT_OP)) { |
| spin_unlock_irqrestore(&ctxp->ctxlock, flags); |
| return; |
| } |
| ctxp->flag |= LPFC_NVME_ABORT_OP; |
| |
| if (ctxp->flag & LPFC_NVME_DEFER_WQFULL) { |
| spin_unlock_irqrestore(&ctxp->ctxlock, flags); |
| lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, |
| ctxp->oxid); |
| wq = ctxp->hdwq->io_wq; |
| lpfc_nvmet_wqfull_flush(phba, wq, ctxp); |
| return; |
| } |
| spin_unlock_irqrestore(&ctxp->ctxlock, flags); |
| |
| /* A state of LPFC_NVME_STE_RCV means we have just received |
| * the NVME command and have not started processing it. |
| * (by issuing any IO WQEs on this exchange yet) |
| */ |
| if (ctxp->state == LPFC_NVME_STE_RCV) |
| lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, |
| ctxp->oxid); |
| else |
| lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, |
| ctxp->oxid); |
| } |
| |
| static void |
| lpfc_nvmet_xmt_fcp_release(struct nvmet_fc_target_port *tgtport, |
| struct nvmefc_tgt_fcp_req *rsp) |
| { |
| struct lpfc_nvmet_tgtport *lpfc_nvmep = tgtport->private; |
| struct lpfc_async_xchg_ctx *ctxp = |
| container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req); |
| struct lpfc_hba *phba = ctxp->phba; |
| unsigned long flags; |
| bool aborting = false; |
| |
| spin_lock_irqsave(&ctxp->ctxlock, flags); |
| if (ctxp->flag & LPFC_NVME_XBUSY) |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, |
| "6027 NVMET release with XBUSY flag x%x" |
| " oxid x%x\n", |
| ctxp->flag, ctxp->oxid); |
| else if (ctxp->state != LPFC_NVME_STE_DONE && |
| ctxp->state != LPFC_NVME_STE_ABORT) |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6413 NVMET release bad state %d %d oxid x%x\n", |
| ctxp->state, ctxp->entry_cnt, ctxp->oxid); |
| |
| if ((ctxp->flag & LPFC_NVME_ABORT_OP) || |
| (ctxp->flag & LPFC_NVME_XBUSY)) { |
| aborting = true; |
| /* let the abort path do the real release */ |
| lpfc_nvmet_defer_release(phba, ctxp); |
| } |
| spin_unlock_irqrestore(&ctxp->ctxlock, flags); |
| |
| lpfc_nvmeio_data(phba, "NVMET FCP FREE: xri x%x ste %d abt %d\n", ctxp->oxid, |
| ctxp->state, aborting); |
| |
| atomic_inc(&lpfc_nvmep->xmt_fcp_release); |
| ctxp->flag &= ~LPFC_NVME_TNOTIFY; |
| |
| if (aborting) |
| return; |
| |
| lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); |
| } |
| |
| static void |
| lpfc_nvmet_defer_rcv(struct nvmet_fc_target_port *tgtport, |
| struct nvmefc_tgt_fcp_req *rsp) |
| { |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct lpfc_async_xchg_ctx *ctxp = |
| container_of(rsp, struct lpfc_async_xchg_ctx, hdlrctx.fcp_req); |
| struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; |
| struct lpfc_hba *phba = ctxp->phba; |
| unsigned long iflag; |
| |
| |
| lpfc_nvmeio_data(phba, "NVMET DEFERRCV: xri x%x sz %d CPU %02x\n", |
| ctxp->oxid, ctxp->size, raw_smp_processor_id()); |
| |
| if (!nvmebuf) { |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, |
| "6425 Defer rcv: no buffer oxid x%x: " |
| "flg %x ste %x\n", |
| ctxp->oxid, ctxp->flag, ctxp->state); |
| return; |
| } |
| |
| tgtp = phba->targetport->private; |
| if (tgtp) |
| atomic_inc(&tgtp->rcv_fcp_cmd_defer); |
| |
| /* Free the nvmebuf since a new buffer already replaced it */ |
| nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| ctxp->rqb_buffer = NULL; |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| } |
| |
| /** |
| * lpfc_nvmet_ls_req_cmp - completion handler for a nvme ls request |
| * @phba: Pointer to HBA context object |
| * @cmdwqe: Pointer to driver command WQE object. |
| * @wcqe: Pointer to driver response CQE object. |
| * |
| * This function is the completion handler for NVME LS requests. |
| * The function updates any states and statistics, then calls the |
| * generic completion handler to finish completion of the request. |
| **/ |
| static void |
| lpfc_nvmet_ls_req_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe, |
| struct lpfc_wcqe_complete *wcqe) |
| { |
| __lpfc_nvme_ls_req_cmp(phba, cmdwqe->vport, cmdwqe, wcqe); |
| } |
| |
| /** |
| * lpfc_nvmet_ls_req - Issue an Link Service request |
| * @targetport: pointer to target instance registered with nvmet transport. |
| * @hosthandle: hosthandle set by the driver in a prior ls_rqst_rcv. |
| * Driver sets this value to the ndlp pointer. |
| * @pnvme_lsreq: the transport nvme_ls_req structure for the LS |
| * |
| * Driver registers this routine to handle any link service request |
| * from the nvme_fc transport to a remote nvme-aware port. |
| * |
| * Return value : |
| * 0 - Success |
| * non-zero: various error codes, in form of -Exxx |
| **/ |
| static int |
| lpfc_nvmet_ls_req(struct nvmet_fc_target_port *targetport, |
| void *hosthandle, |
| struct nvmefc_ls_req *pnvme_lsreq) |
| { |
| struct lpfc_nvmet_tgtport *lpfc_nvmet = targetport->private; |
| struct lpfc_hba *phba; |
| struct lpfc_nodelist *ndlp; |
| int ret; |
| u32 hstate; |
| |
| if (!lpfc_nvmet) |
| return -EINVAL; |
| |
| phba = lpfc_nvmet->phba; |
| if (phba->pport->load_flag & FC_UNLOADING) |
| return -EINVAL; |
| |
| hstate = atomic_read(&lpfc_nvmet->state); |
| if (hstate == LPFC_NVMET_INV_HOST_ACTIVE) |
| return -EACCES; |
| |
| ndlp = (struct lpfc_nodelist *)hosthandle; |
| |
| ret = __lpfc_nvme_ls_req(phba->pport, ndlp, pnvme_lsreq, |
| lpfc_nvmet_ls_req_cmp); |
| |
| return ret; |
| } |
| |
| /** |
| * lpfc_nvmet_ls_abort - Abort a prior NVME LS request |
| * @targetport: Transport targetport, that LS was issued from. |
| * @hosthandle: hosthandle set by the driver in a prior ls_rqst_rcv. |
| * Driver sets this value to the ndlp pointer. |
| * @pnvme_lsreq: the transport nvme_ls_req structure for LS to be aborted |
| * |
| * Driver registers this routine to abort an NVME LS request that is |
| * in progress (from the transports perspective). |
| **/ |
| static void |
| lpfc_nvmet_ls_abort(struct nvmet_fc_target_port *targetport, |
| void *hosthandle, |
| struct nvmefc_ls_req *pnvme_lsreq) |
| { |
| struct lpfc_nvmet_tgtport *lpfc_nvmet = targetport->private; |
| struct lpfc_hba *phba; |
| struct lpfc_nodelist *ndlp; |
| int ret; |
| |
| phba = lpfc_nvmet->phba; |
| if (phba->pport->load_flag & FC_UNLOADING) |
| return; |
| |
| ndlp = (struct lpfc_nodelist *)hosthandle; |
| |
| ret = __lpfc_nvme_ls_abort(phba->pport, ndlp, pnvme_lsreq); |
| if (!ret) |
| atomic_inc(&lpfc_nvmet->xmt_ls_abort); |
| } |
| |
| static void |
| lpfc_nvmet_host_release(void *hosthandle) |
| { |
| struct lpfc_nodelist *ndlp = hosthandle; |
| struct lpfc_hba *phba = ndlp->phba; |
| struct lpfc_nvmet_tgtport *tgtp; |
| |
| if (!phba->targetport || !phba->targetport->private) |
| return; |
| |
| lpfc_printf_log(phba, KERN_ERR, LOG_NVME, |
| "6202 NVMET XPT releasing hosthandle x%px " |
| "DID x%x xflags x%x refcnt %d\n", |
| hosthandle, ndlp->nlp_DID, ndlp->fc4_xpt_flags, |
| kref_read(&ndlp->kref)); |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| spin_lock_irq(&ndlp->lock); |
| ndlp->fc4_xpt_flags &= ~NLP_XPT_HAS_HH; |
| spin_unlock_irq(&ndlp->lock); |
| lpfc_nlp_put(ndlp); |
| atomic_set(&tgtp->state, 0); |
| } |
| |
| static void |
| lpfc_nvmet_discovery_event(struct nvmet_fc_target_port *tgtport) |
| { |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct lpfc_hba *phba; |
| uint32_t rc; |
| |
| tgtp = tgtport->private; |
| phba = tgtp->phba; |
| |
| rc = lpfc_issue_els_rscn(phba->pport, 0); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6420 NVMET subsystem change: Notification %s\n", |
| (rc) ? "Failed" : "Sent"); |
| } |
| |
| static struct nvmet_fc_target_template lpfc_tgttemplate = { |
| .targetport_delete = lpfc_nvmet_targetport_delete, |
| .xmt_ls_rsp = lpfc_nvmet_xmt_ls_rsp, |
| .fcp_op = lpfc_nvmet_xmt_fcp_op, |
| .fcp_abort = lpfc_nvmet_xmt_fcp_abort, |
| .fcp_req_release = lpfc_nvmet_xmt_fcp_release, |
| .defer_rcv = lpfc_nvmet_defer_rcv, |
| .discovery_event = lpfc_nvmet_discovery_event, |
| .ls_req = lpfc_nvmet_ls_req, |
| .ls_abort = lpfc_nvmet_ls_abort, |
| .host_release = lpfc_nvmet_host_release, |
| |
| .max_hw_queues = 1, |
| .max_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, |
| .max_dif_sgl_segments = LPFC_NVMET_DEFAULT_SEGS, |
| .dma_boundary = 0xFFFFFFFF, |
| |
| /* optional features */ |
| .target_features = 0, |
| /* sizes of additional private data for data structures */ |
| .target_priv_sz = sizeof(struct lpfc_nvmet_tgtport), |
| .lsrqst_priv_sz = 0, |
| }; |
| |
| static void |
| __lpfc_nvmet_clean_io_for_cpu(struct lpfc_hba *phba, |
| struct lpfc_nvmet_ctx_info *infop) |
| { |
| struct lpfc_nvmet_ctxbuf *ctx_buf, *next_ctx_buf; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&infop->nvmet_ctx_list_lock, flags); |
| list_for_each_entry_safe(ctx_buf, next_ctx_buf, |
| &infop->nvmet_ctx_list, list) { |
| spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); |
| list_del_init(&ctx_buf->list); |
| spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); |
| |
| spin_lock(&phba->hbalock); |
| __lpfc_clear_active_sglq(phba, ctx_buf->sglq->sli4_lxritag); |
| spin_unlock(&phba->hbalock); |
| |
| ctx_buf->sglq->state = SGL_FREED; |
| ctx_buf->sglq->ndlp = NULL; |
| |
| spin_lock(&phba->sli4_hba.sgl_list_lock); |
| list_add_tail(&ctx_buf->sglq->list, |
| &phba->sli4_hba.lpfc_nvmet_sgl_list); |
| spin_unlock(&phba->sli4_hba.sgl_list_lock); |
| |
| lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); |
| kfree(ctx_buf->context); |
| } |
| spin_unlock_irqrestore(&infop->nvmet_ctx_list_lock, flags); |
| } |
| |
| static void |
| lpfc_nvmet_cleanup_io_context(struct lpfc_hba *phba) |
| { |
| struct lpfc_nvmet_ctx_info *infop; |
| int i, j; |
| |
| /* The first context list, MRQ 0 CPU 0 */ |
| infop = phba->sli4_hba.nvmet_ctx_info; |
| if (!infop) |
| return; |
| |
| /* Cycle the the entire CPU context list for every MRQ */ |
| for (i = 0; i < phba->cfg_nvmet_mrq; i++) { |
| for_each_present_cpu(j) { |
| infop = lpfc_get_ctx_list(phba, j, i); |
| __lpfc_nvmet_clean_io_for_cpu(phba, infop); |
| } |
| } |
| kfree(phba->sli4_hba.nvmet_ctx_info); |
| phba->sli4_hba.nvmet_ctx_info = NULL; |
| } |
| |
| static int |
| lpfc_nvmet_setup_io_context(struct lpfc_hba *phba) |
| { |
| struct lpfc_nvmet_ctxbuf *ctx_buf; |
| struct lpfc_iocbq *nvmewqe; |
| union lpfc_wqe128 *wqe; |
| struct lpfc_nvmet_ctx_info *last_infop; |
| struct lpfc_nvmet_ctx_info *infop; |
| int i, j, idx, cpu; |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME, |
| "6403 Allocate NVMET resources for %d XRIs\n", |
| phba->sli4_hba.nvmet_xri_cnt); |
| |
| phba->sli4_hba.nvmet_ctx_info = kcalloc( |
| phba->sli4_hba.num_possible_cpu * phba->cfg_nvmet_mrq, |
| sizeof(struct lpfc_nvmet_ctx_info), GFP_KERNEL); |
| if (!phba->sli4_hba.nvmet_ctx_info) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6419 Failed allocate memory for " |
| "nvmet context lists\n"); |
| return -ENOMEM; |
| } |
| |
| /* |
| * Assuming X CPUs in the system, and Y MRQs, allocate some |
| * lpfc_nvmet_ctx_info structures as follows: |
| * |
| * cpu0/mrq0 cpu1/mrq0 ... cpuX/mrq0 |
| * cpu0/mrq1 cpu1/mrq1 ... cpuX/mrq1 |
| * ... |
| * cpuX/mrqY cpuX/mrqY ... cpuX/mrqY |
| * |
| * Each line represents a MRQ "silo" containing an entry for |
| * every CPU. |
| * |
| * MRQ X is initially assumed to be associated with CPU X, thus |
| * contexts are initially distributed across all MRQs using |
| * the MRQ index (N) as follows cpuN/mrqN. When contexts are |
| * freed, the are freed to the MRQ silo based on the CPU number |
| * of the IO completion. Thus a context that was allocated for MRQ A |
| * whose IO completed on CPU B will be freed to cpuB/mrqA. |
| */ |
| for_each_possible_cpu(i) { |
| for (j = 0; j < phba->cfg_nvmet_mrq; j++) { |
| infop = lpfc_get_ctx_list(phba, i, j); |
| INIT_LIST_HEAD(&infop->nvmet_ctx_list); |
| spin_lock_init(&infop->nvmet_ctx_list_lock); |
| infop->nvmet_ctx_list_cnt = 0; |
| } |
| } |
| |
| /* |
| * Setup the next CPU context info ptr for each MRQ. |
| * MRQ 0 will cycle thru CPUs 0 - X separately from |
| * MRQ 1 cycling thru CPUs 0 - X, and so on. |
| */ |
| for (j = 0; j < phba->cfg_nvmet_mrq; j++) { |
| last_infop = lpfc_get_ctx_list(phba, |
| cpumask_first(cpu_present_mask), |
| j); |
| for (i = phba->sli4_hba.num_possible_cpu - 1; i >= 0; i--) { |
| infop = lpfc_get_ctx_list(phba, i, j); |
| infop->nvmet_ctx_next_cpu = last_infop; |
| last_infop = infop; |
| } |
| } |
| |
| /* For all nvmet xris, allocate resources needed to process a |
| * received command on a per xri basis. |
| */ |
| idx = 0; |
| cpu = cpumask_first(cpu_present_mask); |
| for (i = 0; i < phba->sli4_hba.nvmet_xri_cnt; i++) { |
| ctx_buf = kzalloc(sizeof(*ctx_buf), GFP_KERNEL); |
| if (!ctx_buf) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6404 Ran out of memory for NVMET\n"); |
| return -ENOMEM; |
| } |
| |
| ctx_buf->context = kzalloc(sizeof(*ctx_buf->context), |
| GFP_KERNEL); |
| if (!ctx_buf->context) { |
| kfree(ctx_buf); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6405 Ran out of NVMET " |
| "context memory\n"); |
| return -ENOMEM; |
| } |
| ctx_buf->context->ctxbuf = ctx_buf; |
| ctx_buf->context->state = LPFC_NVME_STE_FREE; |
| |
| ctx_buf->iocbq = lpfc_sli_get_iocbq(phba); |
| if (!ctx_buf->iocbq) { |
| kfree(ctx_buf->context); |
| kfree(ctx_buf); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6406 Ran out of NVMET iocb/WQEs\n"); |
| return -ENOMEM; |
| } |
| ctx_buf->iocbq->iocb_flag = LPFC_IO_NVMET; |
| nvmewqe = ctx_buf->iocbq; |
| wqe = &nvmewqe->wqe; |
| |
| /* Initialize WQE */ |
| memset(wqe, 0, sizeof(union lpfc_wqe)); |
| |
| ctx_buf->iocbq->context1 = NULL; |
| spin_lock(&phba->sli4_hba.sgl_list_lock); |
| ctx_buf->sglq = __lpfc_sli_get_nvmet_sglq(phba, ctx_buf->iocbq); |
| spin_unlock(&phba->sli4_hba.sgl_list_lock); |
| if (!ctx_buf->sglq) { |
| lpfc_sli_release_iocbq(phba, ctx_buf->iocbq); |
| kfree(ctx_buf->context); |
| kfree(ctx_buf); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6407 Ran out of NVMET XRIs\n"); |
| return -ENOMEM; |
| } |
| INIT_WORK(&ctx_buf->defer_work, lpfc_nvmet_fcp_rqst_defer_work); |
| |
| /* |
| * Add ctx to MRQidx context list. Our initial assumption |
| * is MRQidx will be associated with CPUidx. This association |
| * can change on the fly. |
| */ |
| infop = lpfc_get_ctx_list(phba, cpu, idx); |
| spin_lock(&infop->nvmet_ctx_list_lock); |
| list_add_tail(&ctx_buf->list, &infop->nvmet_ctx_list); |
| infop->nvmet_ctx_list_cnt++; |
| spin_unlock(&infop->nvmet_ctx_list_lock); |
| |
| /* Spread ctx structures evenly across all MRQs */ |
| idx++; |
| if (idx >= phba->cfg_nvmet_mrq) { |
| idx = 0; |
| cpu = cpumask_first(cpu_present_mask); |
| continue; |
| } |
| cpu = cpumask_next(cpu, cpu_present_mask); |
| if (cpu == nr_cpu_ids) |
| cpu = cpumask_first(cpu_present_mask); |
| |
| } |
| |
| for_each_present_cpu(i) { |
| for (j = 0; j < phba->cfg_nvmet_mrq; j++) { |
| infop = lpfc_get_ctx_list(phba, i, j); |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME | LOG_INIT, |
| "6408 TOTAL NVMET ctx for CPU %d " |
| "MRQ %d: cnt %d nextcpu x%px\n", |
| i, j, infop->nvmet_ctx_list_cnt, |
| infop->nvmet_ctx_next_cpu); |
| } |
| } |
| return 0; |
| } |
| |
| int |
| lpfc_nvmet_create_targetport(struct lpfc_hba *phba) |
| { |
| struct lpfc_vport *vport = phba->pport; |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct nvmet_fc_port_info pinfo; |
| int error; |
| |
| if (phba->targetport) |
| return 0; |
| |
| error = lpfc_nvmet_setup_io_context(phba); |
| if (error) |
| return error; |
| |
| memset(&pinfo, 0, sizeof(struct nvmet_fc_port_info)); |
| pinfo.node_name = wwn_to_u64(vport->fc_nodename.u.wwn); |
| pinfo.port_name = wwn_to_u64(vport->fc_portname.u.wwn); |
| pinfo.port_id = vport->fc_myDID; |
| |
| /* We need to tell the transport layer + 1 because it takes page |
| * alignment into account. When space for the SGL is allocated we |
| * allocate + 3, one for cmd, one for rsp and one for this alignment |
| */ |
| lpfc_tgttemplate.max_sgl_segments = phba->cfg_nvme_seg_cnt + 1; |
| lpfc_tgttemplate.max_hw_queues = phba->cfg_hdw_queue; |
| lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP; |
| |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate, |
| &phba->pcidev->dev, |
| &phba->targetport); |
| #else |
| error = -ENOENT; |
| #endif |
| if (error) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6025 Cannot register NVME targetport x%x: " |
| "portnm %llx nodenm %llx segs %d qs %d\n", |
| error, |
| pinfo.port_name, pinfo.node_name, |
| lpfc_tgttemplate.max_sgl_segments, |
| lpfc_tgttemplate.max_hw_queues); |
| phba->targetport = NULL; |
| phba->nvmet_support = 0; |
| |
| lpfc_nvmet_cleanup_io_context(phba); |
| |
| } else { |
| tgtp = (struct lpfc_nvmet_tgtport *) |
| phba->targetport->private; |
| tgtp->phba = phba; |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, |
| "6026 Registered NVME " |
| "targetport: x%px, private x%px " |
| "portnm %llx nodenm %llx segs %d qs %d\n", |
| phba->targetport, tgtp, |
| pinfo.port_name, pinfo.node_name, |
| lpfc_tgttemplate.max_sgl_segments, |
| lpfc_tgttemplate.max_hw_queues); |
| |
| atomic_set(&tgtp->rcv_ls_req_in, 0); |
| atomic_set(&tgtp->rcv_ls_req_out, 0); |
| atomic_set(&tgtp->rcv_ls_req_drop, 0); |
| atomic_set(&tgtp->xmt_ls_abort, 0); |
| atomic_set(&tgtp->xmt_ls_abort_cmpl, 0); |
| atomic_set(&tgtp->xmt_ls_rsp, 0); |
| atomic_set(&tgtp->xmt_ls_drop, 0); |
| atomic_set(&tgtp->xmt_ls_rsp_error, 0); |
| atomic_set(&tgtp->xmt_ls_rsp_xb_set, 0); |
| atomic_set(&tgtp->xmt_ls_rsp_aborted, 0); |
| atomic_set(&tgtp->xmt_ls_rsp_cmpl, 0); |
| atomic_set(&tgtp->rcv_fcp_cmd_in, 0); |
| atomic_set(&tgtp->rcv_fcp_cmd_out, 0); |
| atomic_set(&tgtp->rcv_fcp_cmd_drop, 0); |
| atomic_set(&tgtp->xmt_fcp_drop, 0); |
| atomic_set(&tgtp->xmt_fcp_read_rsp, 0); |
| atomic_set(&tgtp->xmt_fcp_read, 0); |
| atomic_set(&tgtp->xmt_fcp_write, 0); |
| atomic_set(&tgtp->xmt_fcp_rsp, 0); |
| atomic_set(&tgtp->xmt_fcp_release, 0); |
| atomic_set(&tgtp->xmt_fcp_rsp_cmpl, 0); |
| atomic_set(&tgtp->xmt_fcp_rsp_error, 0); |
| atomic_set(&tgtp->xmt_fcp_rsp_xb_set, 0); |
| atomic_set(&tgtp->xmt_fcp_rsp_aborted, 0); |
| atomic_set(&tgtp->xmt_fcp_rsp_drop, 0); |
| atomic_set(&tgtp->xmt_fcp_xri_abort_cqe, 0); |
| atomic_set(&tgtp->xmt_fcp_abort, 0); |
| atomic_set(&tgtp->xmt_fcp_abort_cmpl, 0); |
| atomic_set(&tgtp->xmt_abort_unsol, 0); |
| atomic_set(&tgtp->xmt_abort_sol, 0); |
| atomic_set(&tgtp->xmt_abort_rsp, 0); |
| atomic_set(&tgtp->xmt_abort_rsp_error, 0); |
| atomic_set(&tgtp->defer_ctx, 0); |
| atomic_set(&tgtp->defer_fod, 0); |
| atomic_set(&tgtp->defer_wqfull, 0); |
| } |
| return error; |
| } |
| |
| int |
| lpfc_nvmet_update_targetport(struct lpfc_hba *phba) |
| { |
| struct lpfc_vport *vport = phba->pport; |
| |
| if (!phba->targetport) |
| return 0; |
| |
| lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME, |
| "6007 Update NVMET port x%px did x%x\n", |
| phba->targetport, vport->fc_myDID); |
| |
| phba->targetport->port_id = vport->fc_myDID; |
| return 0; |
| } |
| |
| /** |
| * lpfc_sli4_nvmet_xri_aborted - Fast-path process of nvmet xri abort |
| * @phba: pointer to lpfc hba data structure. |
| * @axri: pointer to the nvmet xri abort wcqe structure. |
| * |
| * This routine is invoked by the worker thread to process a SLI4 fast-path |
| * NVMET aborted xri. |
| **/ |
| void |
| lpfc_sli4_nvmet_xri_aborted(struct lpfc_hba *phba, |
| struct sli4_wcqe_xri_aborted *axri) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); |
| uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); |
| struct lpfc_async_xchg_ctx *ctxp, *next_ctxp; |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct nvmefc_tgt_fcp_req *req = NULL; |
| struct lpfc_nodelist *ndlp; |
| unsigned long iflag = 0; |
| int rrq_empty = 0; |
| bool released = false; |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6317 XB aborted xri x%x rxid x%x\n", xri, rxid); |
| |
| if (!(phba->cfg_enable_fc4_type & LPFC_ENABLE_NVME)) |
| return; |
| |
| if (phba->targetport) { |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| atomic_inc(&tgtp->xmt_fcp_xri_abort_cqe); |
| } |
| |
| spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag); |
| list_for_each_entry_safe(ctxp, next_ctxp, |
| &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, |
| list) { |
| if (ctxp->ctxbuf->sglq->sli4_xritag != xri) |
| continue; |
| |
| spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, |
| iflag); |
| |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| /* Check if we already received a free context call |
| * and we have completed processing an abort situation. |
| */ |
| if (ctxp->flag & LPFC_NVME_CTX_RLS && |
| !(ctxp->flag & LPFC_NVME_ABORT_OP)) { |
| spin_lock(&phba->sli4_hba.abts_nvmet_buf_list_lock); |
| list_del_init(&ctxp->list); |
| spin_unlock(&phba->sli4_hba.abts_nvmet_buf_list_lock); |
| released = true; |
| } |
| ctxp->flag &= ~LPFC_NVME_XBUSY; |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| |
| rrq_empty = list_empty(&phba->active_rrq_list); |
| ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); |
| if (ndlp && |
| (ndlp->nlp_state == NLP_STE_UNMAPPED_NODE || |
| ndlp->nlp_state == NLP_STE_MAPPED_NODE)) { |
| lpfc_set_rrq_active(phba, ndlp, |
| ctxp->ctxbuf->sglq->sli4_lxritag, |
| rxid, 1); |
| lpfc_sli4_abts_err_handler(phba, ndlp, axri); |
| } |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6318 XB aborted oxid x%x flg x%x (%x)\n", |
| ctxp->oxid, ctxp->flag, released); |
| if (released) |
| lpfc_nvmet_ctxbuf_post(phba, ctxp->ctxbuf); |
| |
| if (rrq_empty) |
| lpfc_worker_wake_up(phba); |
| return; |
| } |
| spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag); |
| ctxp = lpfc_nvmet_get_ctx_for_xri(phba, xri); |
| if (ctxp) { |
| /* |
| * Abort already done by FW, so BA_ACC sent. |
| * However, the transport may be unaware. |
| */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6323 NVMET Rcv ABTS xri x%x ctxp state x%x " |
| "flag x%x oxid x%x rxid x%x\n", |
| xri, ctxp->state, ctxp->flag, ctxp->oxid, |
| rxid); |
| |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| ctxp->flag |= LPFC_NVME_ABTS_RCV; |
| ctxp->state = LPFC_NVME_STE_ABORT; |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| |
| lpfc_nvmeio_data(phba, |
| "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", |
| xri, raw_smp_processor_id(), 0); |
| |
| req = &ctxp->hdlrctx.fcp_req; |
| if (req) |
| nvmet_fc_rcv_fcp_abort(phba->targetport, req); |
| } |
| #endif |
| } |
| |
| int |
| lpfc_nvmet_rcv_unsol_abort(struct lpfc_vport *vport, |
| struct fc_frame_header *fc_hdr) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| struct lpfc_hba *phba = vport->phba; |
| struct lpfc_async_xchg_ctx *ctxp, *next_ctxp; |
| struct nvmefc_tgt_fcp_req *rsp; |
| uint32_t sid; |
| uint16_t oxid, xri; |
| unsigned long iflag = 0; |
| |
| sid = sli4_sid_from_fc_hdr(fc_hdr); |
| oxid = be16_to_cpu(fc_hdr->fh_ox_id); |
| |
| spin_lock_irqsave(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag); |
| list_for_each_entry_safe(ctxp, next_ctxp, |
| &phba->sli4_hba.lpfc_abts_nvmet_ctx_list, |
| list) { |
| if (ctxp->oxid != oxid || ctxp->sid != sid) |
| continue; |
| |
| xri = ctxp->ctxbuf->sglq->sli4_xritag; |
| |
| spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, |
| iflag); |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| ctxp->flag |= LPFC_NVME_ABTS_RCV; |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| |
| lpfc_nvmeio_data(phba, |
| "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", |
| xri, raw_smp_processor_id(), 0); |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6319 NVMET Rcv ABTS:acc xri x%x\n", xri); |
| |
| rsp = &ctxp->hdlrctx.fcp_req; |
| nvmet_fc_rcv_fcp_abort(phba->targetport, rsp); |
| |
| /* Respond with BA_ACC accordingly */ |
| lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); |
| return 0; |
| } |
| spin_unlock_irqrestore(&phba->sli4_hba.abts_nvmet_buf_list_lock, iflag); |
| /* check the wait list */ |
| if (phba->sli4_hba.nvmet_io_wait_cnt) { |
| struct rqb_dmabuf *nvmebuf; |
| struct fc_frame_header *fc_hdr_tmp; |
| u32 sid_tmp; |
| u16 oxid_tmp; |
| bool found = false; |
| |
| spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); |
| |
| /* match by oxid and s_id */ |
| list_for_each_entry(nvmebuf, |
| &phba->sli4_hba.lpfc_nvmet_io_wait_list, |
| hbuf.list) { |
| fc_hdr_tmp = (struct fc_frame_header *) |
| (nvmebuf->hbuf.virt); |
| oxid_tmp = be16_to_cpu(fc_hdr_tmp->fh_ox_id); |
| sid_tmp = sli4_sid_from_fc_hdr(fc_hdr_tmp); |
| if (oxid_tmp != oxid || sid_tmp != sid) |
| continue; |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6321 NVMET Rcv ABTS oxid x%x from x%x " |
| "is waiting for a ctxp\n", |
| oxid, sid); |
| |
| list_del_init(&nvmebuf->hbuf.list); |
| phba->sli4_hba.nvmet_io_wait_cnt--; |
| found = true; |
| break; |
| } |
| spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, |
| iflag); |
| |
| /* free buffer since already posted a new DMA buffer to RQ */ |
| if (found) { |
| nvmebuf->hrq->rqbp->rqb_free_buffer(phba, nvmebuf); |
| /* Respond with BA_ACC accordingly */ |
| lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); |
| return 0; |
| } |
| } |
| |
| /* check active list */ |
| ctxp = lpfc_nvmet_get_ctx_for_oxid(phba, oxid, sid); |
| if (ctxp) { |
| xri = ctxp->ctxbuf->sglq->sli4_xritag; |
| |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| ctxp->flag |= (LPFC_NVME_ABTS_RCV | LPFC_NVME_ABORT_OP); |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| |
| lpfc_nvmeio_data(phba, |
| "NVMET ABTS RCV: xri x%x CPU %02x rjt %d\n", |
| xri, raw_smp_processor_id(), 0); |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6322 NVMET Rcv ABTS:acc oxid x%x xri x%x " |
| "flag x%x state x%x\n", |
| ctxp->oxid, xri, ctxp->flag, ctxp->state); |
| |
| if (ctxp->flag & LPFC_NVME_TNOTIFY) { |
| /* Notify the transport */ |
| nvmet_fc_rcv_fcp_abort(phba->targetport, |
| &ctxp->hdlrctx.fcp_req); |
| } else { |
| cancel_work_sync(&ctxp->ctxbuf->defer_work); |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| lpfc_nvmet_defer_release(phba, ctxp); |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| } |
| lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid, |
| ctxp->oxid); |
| |
| lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 1); |
| return 0; |
| } |
| |
| lpfc_nvmeio_data(phba, "NVMET ABTS RCV: oxid x%x CPU %02x rjt %d\n", |
| oxid, raw_smp_processor_id(), 1); |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS, |
| "6320 NVMET Rcv ABTS:rjt oxid x%x\n", oxid); |
| |
| /* Respond with BA_RJT accordingly */ |
| lpfc_sli4_seq_abort_rsp(vport, fc_hdr, 0); |
| #endif |
| return 0; |
| } |
| |
| static void |
| lpfc_nvmet_wqfull_flush(struct lpfc_hba *phba, struct lpfc_queue *wq, |
| struct lpfc_async_xchg_ctx *ctxp) |
| { |
| struct lpfc_sli_ring *pring; |
| struct lpfc_iocbq *nvmewqeq; |
| struct lpfc_iocbq *next_nvmewqeq; |
| unsigned long iflags; |
| struct lpfc_wcqe_complete wcqe; |
| struct lpfc_wcqe_complete *wcqep; |
| |
| pring = wq->pring; |
| wcqep = &wcqe; |
| |
| /* Fake an ABORT error code back to cmpl routine */ |
| memset(wcqep, 0, sizeof(struct lpfc_wcqe_complete)); |
| bf_set(lpfc_wcqe_c_status, wcqep, IOSTAT_LOCAL_REJECT); |
| wcqep->parameter = IOERR_ABORT_REQUESTED; |
| |
| spin_lock_irqsave(&pring->ring_lock, iflags); |
| list_for_each_entry_safe(nvmewqeq, next_nvmewqeq, |
| &wq->wqfull_list, list) { |
| if (ctxp) { |
| /* Checking for a specific IO to flush */ |
| if (nvmewqeq->context2 == ctxp) { |
| list_del(&nvmewqeq->list); |
| spin_unlock_irqrestore(&pring->ring_lock, |
| iflags); |
| lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, |
| wcqep); |
| return; |
| } |
| continue; |
| } else { |
| /* Flush all IOs */ |
| list_del(&nvmewqeq->list); |
| spin_unlock_irqrestore(&pring->ring_lock, iflags); |
| lpfc_nvmet_xmt_fcp_op_cmp(phba, nvmewqeq, wcqep); |
| spin_lock_irqsave(&pring->ring_lock, iflags); |
| } |
| } |
| if (!ctxp) |
| wq->q_flag &= ~HBA_NVMET_WQFULL; |
| spin_unlock_irqrestore(&pring->ring_lock, iflags); |
| } |
| |
| void |
| lpfc_nvmet_wqfull_process(struct lpfc_hba *phba, |
| struct lpfc_queue *wq) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| struct lpfc_sli_ring *pring; |
| struct lpfc_iocbq *nvmewqeq; |
| struct lpfc_async_xchg_ctx *ctxp; |
| unsigned long iflags; |
| int rc; |
| |
| /* |
| * Some WQE slots are available, so try to re-issue anything |
| * on the WQ wqfull_list. |
| */ |
| pring = wq->pring; |
| spin_lock_irqsave(&pring->ring_lock, iflags); |
| while (!list_empty(&wq->wqfull_list)) { |
| list_remove_head(&wq->wqfull_list, nvmewqeq, struct lpfc_iocbq, |
| list); |
| spin_unlock_irqrestore(&pring->ring_lock, iflags); |
| ctxp = (struct lpfc_async_xchg_ctx *)nvmewqeq->context2; |
| rc = lpfc_sli4_issue_wqe(phba, ctxp->hdwq, nvmewqeq); |
| spin_lock_irqsave(&pring->ring_lock, iflags); |
| if (rc == -EBUSY) { |
| /* WQ was full again, so put it back on the list */ |
| list_add(&nvmewqeq->list, &wq->wqfull_list); |
| spin_unlock_irqrestore(&pring->ring_lock, iflags); |
| return; |
| } |
| if (rc == WQE_SUCCESS) { |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (ctxp->ts_cmd_nvme) { |
| if (ctxp->hdlrctx.fcp_req.op == NVMET_FCOP_RSP) |
| ctxp->ts_status_wqput = ktime_get_ns(); |
| else |
| ctxp->ts_data_wqput = ktime_get_ns(); |
| } |
| #endif |
| } else { |
| WARN_ON(rc); |
| } |
| } |
| wq->q_flag &= ~HBA_NVMET_WQFULL; |
| spin_unlock_irqrestore(&pring->ring_lock, iflags); |
| |
| #endif |
| } |
| |
| void |
| lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct lpfc_queue *wq; |
| uint32_t qidx; |
| DECLARE_COMPLETION_ONSTACK(tport_unreg_cmp); |
| |
| if (phba->nvmet_support == 0) |
| return; |
| if (phba->targetport) { |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| for (qidx = 0; qidx < phba->cfg_hdw_queue; qidx++) { |
| wq = phba->sli4_hba.hdwq[qidx].io_wq; |
| lpfc_nvmet_wqfull_flush(phba, wq, NULL); |
| } |
| tgtp->tport_unreg_cmp = &tport_unreg_cmp; |
| nvmet_fc_unregister_targetport(phba->targetport); |
| if (!wait_for_completion_timeout(&tport_unreg_cmp, |
| msecs_to_jiffies(LPFC_NVMET_WAIT_TMO))) |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6179 Unreg targetport x%px timeout " |
| "reached.\n", phba->targetport); |
| lpfc_nvmet_cleanup_io_context(phba); |
| } |
| phba->targetport = NULL; |
| #endif |
| } |
| |
| /** |
| * lpfc_nvmet_handle_lsreq - Process an NVME LS request |
| * @phba: pointer to lpfc hba data structure. |
| * @axchg: pointer to exchange context for the NVME LS request |
| * |
| * This routine is used for processing an asychronously received NVME LS |
| * request. Any remaining validation is done and the LS is then forwarded |
| * to the nvmet-fc transport via nvmet_fc_rcv_ls_req(). |
| * |
| * The calling sequence should be: nvmet_fc_rcv_ls_req() -> (processing) |
| * -> lpfc_nvmet_xmt_ls_rsp/cmp -> req->done. |
| * lpfc_nvme_xmt_ls_rsp_cmp should free the allocated axchg. |
| * |
| * Returns 0 if LS was handled and delivered to the transport |
| * Returns 1 if LS failed to be handled and should be dropped |
| */ |
| int |
| lpfc_nvmet_handle_lsreq(struct lpfc_hba *phba, |
| struct lpfc_async_xchg_ctx *axchg) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| struct lpfc_nvmet_tgtport *tgtp = phba->targetport->private; |
| uint32_t *payload = axchg->payload; |
| int rc; |
| |
| atomic_inc(&tgtp->rcv_ls_req_in); |
| |
| /* |
| * Driver passes the ndlp as the hosthandle argument allowing |
| * the transport to generate LS requests for any associateions |
| * that are created. |
| */ |
| rc = nvmet_fc_rcv_ls_req(phba->targetport, axchg->ndlp, &axchg->ls_rsp, |
| axchg->payload, axchg->size); |
| |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, |
| "6037 NVMET Unsol rcv: sz %d rc %d: %08x %08x %08x " |
| "%08x %08x %08x\n", axchg->size, rc, |
| *payload, *(payload+1), *(payload+2), |
| *(payload+3), *(payload+4), *(payload+5)); |
| |
| if (!rc) { |
| atomic_inc(&tgtp->rcv_ls_req_out); |
| return 0; |
| } |
| |
| atomic_inc(&tgtp->rcv_ls_req_drop); |
| #endif |
| return 1; |
| } |
| |
| static void |
| lpfc_nvmet_process_rcv_fcp_req(struct lpfc_nvmet_ctxbuf *ctx_buf) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| struct lpfc_async_xchg_ctx *ctxp = ctx_buf->context; |
| struct lpfc_hba *phba = ctxp->phba; |
| struct rqb_dmabuf *nvmebuf = ctxp->rqb_buffer; |
| struct lpfc_nvmet_tgtport *tgtp; |
| uint32_t *payload, qno; |
| uint32_t rc; |
| unsigned long iflags; |
| |
| if (!nvmebuf) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6159 process_rcv_fcp_req, nvmebuf is NULL, " |
| "oxid: x%x flg: x%x state: x%x\n", |
| ctxp->oxid, ctxp->flag, ctxp->state); |
| spin_lock_irqsave(&ctxp->ctxlock, iflags); |
| lpfc_nvmet_defer_release(phba, ctxp); |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflags); |
| lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, |
| ctxp->oxid); |
| return; |
| } |
| |
| if (ctxp->flag & LPFC_NVME_ABTS_RCV) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6324 IO oxid x%x aborted\n", |
| ctxp->oxid); |
| return; |
| } |
| |
| payload = (uint32_t *)(nvmebuf->dbuf.virt); |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| ctxp->flag |= LPFC_NVME_TNOTIFY; |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (ctxp->ts_isr_cmd) |
| ctxp->ts_cmd_nvme = ktime_get_ns(); |
| #endif |
| /* |
| * The calling sequence should be: |
| * nvmet_fc_rcv_fcp_req->lpfc_nvmet_xmt_fcp_op/cmp- req->done |
| * lpfc_nvmet_xmt_fcp_op_cmp should free the allocated ctxp. |
| * When we return from nvmet_fc_rcv_fcp_req, all relevant info |
| * the NVME command / FC header is stored. |
| * A buffer has already been reposted for this IO, so just free |
| * the nvmebuf. |
| */ |
| rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->hdlrctx.fcp_req, |
| payload, ctxp->size); |
| /* Process FCP command */ |
| if (rc == 0) { |
| atomic_inc(&tgtp->rcv_fcp_cmd_out); |
| spin_lock_irqsave(&ctxp->ctxlock, iflags); |
| if ((ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) || |
| (nvmebuf != ctxp->rqb_buffer)) { |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflags); |
| return; |
| } |
| ctxp->rqb_buffer = NULL; |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflags); |
| lpfc_rq_buf_free(phba, &nvmebuf->hbuf); /* repost */ |
| return; |
| } |
| |
| /* Processing of FCP command is deferred */ |
| if (rc == -EOVERFLOW) { |
| lpfc_nvmeio_data(phba, "NVMET RCV BUSY: xri x%x sz %d " |
| "from %06x\n", |
| ctxp->oxid, ctxp->size, ctxp->sid); |
| atomic_inc(&tgtp->rcv_fcp_cmd_out); |
| atomic_inc(&tgtp->defer_fod); |
| spin_lock_irqsave(&ctxp->ctxlock, iflags); |
| if (ctxp->flag & LPFC_NVME_CTX_REUSE_WQ) { |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflags); |
| return; |
| } |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflags); |
| /* |
| * Post a replacement DMA buffer to RQ and defer |
| * freeing rcv buffer till .defer_rcv callback |
| */ |
| qno = nvmebuf->idx; |
| lpfc_post_rq_buffer( |
| phba, phba->sli4_hba.nvmet_mrq_hdr[qno], |
| phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); |
| return; |
| } |
| ctxp->flag &= ~LPFC_NVME_TNOTIFY; |
| atomic_inc(&tgtp->rcv_fcp_cmd_drop); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "2582 FCP Drop IO x%x: err x%x: x%x x%x x%x\n", |
| ctxp->oxid, rc, |
| atomic_read(&tgtp->rcv_fcp_cmd_in), |
| atomic_read(&tgtp->rcv_fcp_cmd_out), |
| atomic_read(&tgtp->xmt_fcp_release)); |
| lpfc_nvmeio_data(phba, "NVMET FCP DROP: xri x%x sz %d from %06x\n", |
| ctxp->oxid, ctxp->size, ctxp->sid); |
| spin_lock_irqsave(&ctxp->ctxlock, iflags); |
| lpfc_nvmet_defer_release(phba, ctxp); |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflags); |
| lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid); |
| #endif |
| } |
| |
| static void |
| lpfc_nvmet_fcp_rqst_defer_work(struct work_struct *work) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| struct lpfc_nvmet_ctxbuf *ctx_buf = |
| container_of(work, struct lpfc_nvmet_ctxbuf, defer_work); |
| |
| lpfc_nvmet_process_rcv_fcp_req(ctx_buf); |
| #endif |
| } |
| |
| static struct lpfc_nvmet_ctxbuf * |
| lpfc_nvmet_replenish_context(struct lpfc_hba *phba, |
| struct lpfc_nvmet_ctx_info *current_infop) |
| { |
| #if (IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| struct lpfc_nvmet_ctxbuf *ctx_buf = NULL; |
| struct lpfc_nvmet_ctx_info *get_infop; |
| int i; |
| |
| /* |
| * The current_infop for the MRQ a NVME command IU was received |
| * on is empty. Our goal is to replenish this MRQs context |
| * list from a another CPUs. |
| * |
| * First we need to pick a context list to start looking on. |
| * nvmet_ctx_start_cpu has available context the last time |
| * we needed to replenish this CPU where nvmet_ctx_next_cpu |
| * is just the next sequential CPU for this MRQ. |
| */ |
| if (current_infop->nvmet_ctx_start_cpu) |
| get_infop = current_infop->nvmet_ctx_start_cpu; |
| else |
| get_infop = current_infop->nvmet_ctx_next_cpu; |
| |
| for (i = 0; i < phba->sli4_hba.num_possible_cpu; i++) { |
| if (get_infop == current_infop) { |
| get_infop = get_infop->nvmet_ctx_next_cpu; |
| continue; |
| } |
| spin_lock(&get_infop->nvmet_ctx_list_lock); |
| |
| /* Just take the entire context list, if there are any */ |
| if (get_infop->nvmet_ctx_list_cnt) { |
| list_splice_init(&get_infop->nvmet_ctx_list, |
| ¤t_infop->nvmet_ctx_list); |
| current_infop->nvmet_ctx_list_cnt = |
| get_infop->nvmet_ctx_list_cnt - 1; |
| get_infop->nvmet_ctx_list_cnt = 0; |
| spin_unlock(&get_infop->nvmet_ctx_list_lock); |
| |
| current_infop->nvmet_ctx_start_cpu = get_infop; |
| list_remove_head(¤t_infop->nvmet_ctx_list, |
| ctx_buf, struct lpfc_nvmet_ctxbuf, |
| list); |
| return ctx_buf; |
| } |
| |
| /* Otherwise, move on to the next CPU for this MRQ */ |
| spin_unlock(&get_infop->nvmet_ctx_list_lock); |
| get_infop = get_infop->nvmet_ctx_next_cpu; |
| } |
| |
| #endif |
| /* Nothing found, all contexts for the MRQ are in-flight */ |
| return NULL; |
| } |
| |
| /** |
| * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer |
| * @phba: pointer to lpfc hba data structure. |
| * @idx: relative index of MRQ vector |
| * @nvmebuf: pointer to lpfc nvme command HBQ data structure. |
| * @isr_timestamp: in jiffies. |
| * @cqflag: cq processing information regarding workload. |
| * |
| * This routine is used for processing the WQE associated with a unsolicited |
| * event. It first determines whether there is an existing ndlp that matches |
| * the DID from the unsolicited WQE. If not, it will create a new one with |
| * the DID from the unsolicited WQE. The ELS command from the unsolicited |
| * WQE is then used to invoke the proper routine and to set up proper state |
| * of the discovery state machine. |
| **/ |
| static void |
| lpfc_nvmet_unsol_fcp_buffer(struct lpfc_hba *phba, |
| uint32_t idx, |
| struct rqb_dmabuf *nvmebuf, |
| uint64_t isr_timestamp, |
| uint8_t cqflag) |
| { |
| struct lpfc_async_xchg_ctx *ctxp; |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct fc_frame_header *fc_hdr; |
| struct lpfc_nvmet_ctxbuf *ctx_buf; |
| struct lpfc_nvmet_ctx_info *current_infop; |
| uint32_t size, oxid, sid, qno; |
| unsigned long iflag; |
| int current_cpu; |
| |
| if (!IS_ENABLED(CONFIG_NVME_TARGET_FC)) |
| return; |
| |
| ctx_buf = NULL; |
| if (!nvmebuf || !phba->targetport) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6157 NVMET FCP Drop IO\n"); |
| if (nvmebuf) |
| lpfc_rq_buf_free(phba, &nvmebuf->hbuf); |
| return; |
| } |
| |
| /* |
| * Get a pointer to the context list for this MRQ based on |
| * the CPU this MRQ IRQ is associated with. If the CPU association |
| * changes from our initial assumption, the context list could |
| * be empty, thus it would need to be replenished with the |
| * context list from another CPU for this MRQ. |
| */ |
| current_cpu = raw_smp_processor_id(); |
| current_infop = lpfc_get_ctx_list(phba, current_cpu, idx); |
| spin_lock_irqsave(¤t_infop->nvmet_ctx_list_lock, iflag); |
| if (current_infop->nvmet_ctx_list_cnt) { |
| list_remove_head(¤t_infop->nvmet_ctx_list, |
| ctx_buf, struct lpfc_nvmet_ctxbuf, list); |
| current_infop->nvmet_ctx_list_cnt--; |
| } else { |
| ctx_buf = lpfc_nvmet_replenish_context(phba, current_infop); |
| } |
| spin_unlock_irqrestore(¤t_infop->nvmet_ctx_list_lock, iflag); |
| |
| fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt); |
| oxid = be16_to_cpu(fc_hdr->fh_ox_id); |
| size = nvmebuf->bytes_recv; |
| |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (phba->hdwqstat_on & LPFC_CHECK_NVMET_IO) { |
| this_cpu_inc(phba->sli4_hba.c_stat->rcv_io); |
| if (idx != current_cpu) |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, |
| "6703 CPU Check rcv: " |
| "cpu %d expect %d\n", |
| current_cpu, idx); |
| } |
| #endif |
| |
| lpfc_nvmeio_data(phba, "NVMET FCP RCV: xri x%x sz %d CPU %02x\n", |
| oxid, size, raw_smp_processor_id()); |
| |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| |
| if (!ctx_buf) { |
| /* Queue this NVME IO to process later */ |
| spin_lock_irqsave(&phba->sli4_hba.nvmet_io_wait_lock, iflag); |
| list_add_tail(&nvmebuf->hbuf.list, |
| &phba->sli4_hba.lpfc_nvmet_io_wait_list); |
| phba->sli4_hba.nvmet_io_wait_cnt++; |
| phba->sli4_hba.nvmet_io_wait_total++; |
| spin_unlock_irqrestore(&phba->sli4_hba.nvmet_io_wait_lock, |
| iflag); |
| |
| /* Post a brand new DMA buffer to RQ */ |
| qno = nvmebuf->idx; |
| lpfc_post_rq_buffer( |
| phba, phba->sli4_hba.nvmet_mrq_hdr[qno], |
| phba->sli4_hba.nvmet_mrq_data[qno], 1, qno); |
| |
| atomic_inc(&tgtp->defer_ctx); |
| return; |
| } |
| |
| sid = sli4_sid_from_fc_hdr(fc_hdr); |
| |
| ctxp = (struct lpfc_async_xchg_ctx *)ctx_buf->context; |
| spin_lock_irqsave(&phba->sli4_hba.t_active_list_lock, iflag); |
| list_add_tail(&ctxp->list, &phba->sli4_hba.t_active_ctx_list); |
| spin_unlock_irqrestore(&phba->sli4_hba.t_active_list_lock, iflag); |
| if (ctxp->state != LPFC_NVME_STE_FREE) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6414 NVMET Context corrupt %d %d oxid x%x\n", |
| ctxp->state, ctxp->entry_cnt, ctxp->oxid); |
| } |
| ctxp->wqeq = NULL; |
| ctxp->offset = 0; |
| ctxp->phba = phba; |
| ctxp->size = size; |
| ctxp->oxid = oxid; |
| ctxp->sid = sid; |
| ctxp->idx = idx; |
| ctxp->state = LPFC_NVME_STE_RCV; |
| ctxp->entry_cnt = 1; |
| ctxp->flag = 0; |
| ctxp->ctxbuf = ctx_buf; |
| ctxp->rqb_buffer = (void *)nvmebuf; |
| ctxp->hdwq = NULL; |
| spin_lock_init(&ctxp->ctxlock); |
| |
| #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
| if (isr_timestamp) |
| ctxp->ts_isr_cmd = isr_timestamp; |
| ctxp->ts_cmd_nvme = 0; |
| ctxp->ts_nvme_data = 0; |
| ctxp->ts_data_wqput = 0; |
| ctxp->ts_isr_data = 0; |
| ctxp->ts_data_nvme = 0; |
| ctxp->ts_nvme_status = 0; |
| ctxp->ts_status_wqput = 0; |
| ctxp->ts_isr_status = 0; |
| ctxp->ts_status_nvme = 0; |
| #endif |
| |
| atomic_inc(&tgtp->rcv_fcp_cmd_in); |
| /* check for cq processing load */ |
| if (!cqflag) { |
| lpfc_nvmet_process_rcv_fcp_req(ctx_buf); |
| return; |
| } |
| |
| if (!queue_work(phba->wq, &ctx_buf->defer_work)) { |
| atomic_inc(&tgtp->rcv_fcp_cmd_drop); |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6325 Unable to queue work for oxid x%x. " |
| "FCP Drop IO [x%x x%x x%x]\n", |
| ctxp->oxid, |
| atomic_read(&tgtp->rcv_fcp_cmd_in), |
| atomic_read(&tgtp->rcv_fcp_cmd_out), |
| atomic_read(&tgtp->xmt_fcp_release)); |
| |
| spin_lock_irqsave(&ctxp->ctxlock, iflag); |
| lpfc_nvmet_defer_release(phba, ctxp); |
| spin_unlock_irqrestore(&ctxp->ctxlock, iflag); |
| lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid); |
| } |
| } |
| |
| /** |
| * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport |
| * @phba: pointer to lpfc hba data structure. |
| * @idx: relative index of MRQ vector |
| * @nvmebuf: pointer to received nvme data structure. |
| * @isr_timestamp: in jiffies. |
| * @cqflag: cq processing information regarding workload. |
| * |
| * This routine is used to process an unsolicited event received from a SLI |
| * (Service Level Interface) ring. The actual processing of the data buffer |
| * associated with the unsolicited event is done by invoking the routine |
| * lpfc_nvmet_unsol_fcp_buffer() after properly set up the buffer from the |
| * SLI RQ on which the unsolicited event was received. |
| **/ |
| void |
| lpfc_nvmet_unsol_fcp_event(struct lpfc_hba *phba, |
| uint32_t idx, |
| struct rqb_dmabuf *nvmebuf, |
| uint64_t isr_timestamp, |
| uint8_t cqflag) |
| { |
| if (!nvmebuf) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "3167 NVMET FCP Drop IO\n"); |
| return; |
| } |
| if (phba->nvmet_support == 0) { |
| lpfc_rq_buf_free(phba, &nvmebuf->hbuf); |
| return; |
| } |
| lpfc_nvmet_unsol_fcp_buffer(phba, idx, nvmebuf, isr_timestamp, cqflag); |
| } |
| |
| /** |
| * lpfc_nvmet_prep_ls_wqe - Allocate and prepare a lpfc wqe data structure |
| * @phba: pointer to a host N_Port data structure. |
| * @ctxp: Context info for NVME LS Request |
| * @rspbuf: DMA buffer of NVME command. |
| * @rspsize: size of the NVME command. |
| * |
| * This routine is used for allocating a lpfc-WQE data structure from |
| * the driver lpfc-WQE free-list and prepare the WQE with the parameters |
| * passed into the routine for discovery state machine to issue an Extended |
| * Link Service (NVME) commands. It is a generic lpfc-WQE allocation |
| * and preparation routine that is used by all the discovery state machine |
| * routines and the NVME command-specific fields will be later set up by |
| * the individual discovery machine routines after calling this routine |
| * allocating and preparing a generic WQE data structure. It fills in the |
| * Buffer Descriptor Entries (BDEs), allocates buffers for both command |
| * payload and response payload (if expected). The reference count on the |
| * ndlp is incremented by 1 and the reference to the ndlp is put into |
| * context1 of the WQE data structure for this WQE to hold the ndlp |
| * reference for the command's callback function to access later. |
| * |
| * Return code |
| * Pointer to the newly allocated/prepared nvme wqe data structure |
| * NULL - when nvme wqe data structure allocation/preparation failed |
| **/ |
| static struct lpfc_iocbq * |
| lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *phba, |
| struct lpfc_async_xchg_ctx *ctxp, |
| dma_addr_t rspbuf, uint16_t rspsize) |
| { |
| struct lpfc_nodelist *ndlp; |
| struct lpfc_iocbq *nvmewqe; |
| union lpfc_wqe128 *wqe; |
| |
| if (!lpfc_is_link_up(phba)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6104 NVMET prep LS wqe: link err: " |
| "NPORT x%x oxid:x%x ste %d\n", |
| ctxp->sid, ctxp->oxid, ctxp->state); |
| return NULL; |
| } |
| |
| /* Allocate buffer for command wqe */ |
| nvmewqe = lpfc_sli_get_iocbq(phba); |
| if (nvmewqe == NULL) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6105 NVMET prep LS wqe: No WQE: " |
| "NPORT x%x oxid x%x ste %d\n", |
| ctxp->sid, ctxp->oxid, ctxp->state); |
| return NULL; |
| } |
| |
| ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); |
| if (!ndlp || |
| ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && |
| (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6106 NVMET prep LS wqe: No ndlp: " |
| "NPORT x%x oxid x%x ste %d\n", |
| ctxp->sid, ctxp->oxid, ctxp->state); |
| goto nvme_wqe_free_wqeq_exit; |
| } |
| ctxp->wqeq = nvmewqe; |
| |
| /* prevent preparing wqe with NULL ndlp reference */ |
| nvmewqe->context1 = lpfc_nlp_get(ndlp); |
| if (nvmewqe->context1 == NULL) |
| goto nvme_wqe_free_wqeq_exit; |
| nvmewqe->context2 = ctxp; |
| |
| wqe = &nvmewqe->wqe; |
| memset(wqe, 0, sizeof(union lpfc_wqe)); |
| |
| /* Words 0 - 2 */ |
| wqe->xmit_sequence.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; |
| wqe->xmit_sequence.bde.tus.f.bdeSize = rspsize; |
| wqe->xmit_sequence.bde.addrLow = le32_to_cpu(putPaddrLow(rspbuf)); |
| wqe->xmit_sequence.bde.addrHigh = le32_to_cpu(putPaddrHigh(rspbuf)); |
| |
| /* Word 3 */ |
| |
| /* Word 4 */ |
| |
| /* Word 5 */ |
| bf_set(wqe_dfctl, &wqe->xmit_sequence.wge_ctl, 0); |
| bf_set(wqe_ls, &wqe->xmit_sequence.wge_ctl, 1); |
| bf_set(wqe_la, &wqe->xmit_sequence.wge_ctl, 0); |
| bf_set(wqe_rctl, &wqe->xmit_sequence.wge_ctl, FC_RCTL_ELS4_REP); |
| bf_set(wqe_type, &wqe->xmit_sequence.wge_ctl, FC_TYPE_NVME); |
| |
| /* Word 6 */ |
| bf_set(wqe_ctxt_tag, &wqe->xmit_sequence.wqe_com, |
| phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); |
| bf_set(wqe_xri_tag, &wqe->xmit_sequence.wqe_com, nvmewqe->sli4_xritag); |
| |
| /* Word 7 */ |
| bf_set(wqe_cmnd, &wqe->xmit_sequence.wqe_com, |
| CMD_XMIT_SEQUENCE64_WQE); |
| bf_set(wqe_ct, &wqe->xmit_sequence.wqe_com, SLI4_CT_RPI); |
| bf_set(wqe_class, &wqe->xmit_sequence.wqe_com, CLASS3); |
| bf_set(wqe_pu, &wqe->xmit_sequence.wqe_com, 0); |
| |
| /* Word 8 */ |
| wqe->xmit_sequence.wqe_com.abort_tag = nvmewqe->iotag; |
| |
| /* Word 9 */ |
| bf_set(wqe_reqtag, &wqe->xmit_sequence.wqe_com, nvmewqe->iotag); |
| /* Needs to be set by caller */ |
| bf_set(wqe_rcvoxid, &wqe->xmit_sequence.wqe_com, ctxp->oxid); |
| |
| /* Word 10 */ |
| bf_set(wqe_dbde, &wqe->xmit_sequence.wqe_com, 1); |
| bf_set(wqe_iod, &wqe->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE); |
| bf_set(wqe_lenloc, &wqe->xmit_sequence.wqe_com, |
| LPFC_WQE_LENLOC_WORD12); |
| bf_set(wqe_ebde_cnt, &wqe->xmit_sequence.wqe_com, 0); |
| |
| /* Word 11 */ |
| bf_set(wqe_cqid, &wqe->xmit_sequence.wqe_com, |
| LPFC_WQE_CQ_ID_DEFAULT); |
| bf_set(wqe_cmd_type, &wqe->xmit_sequence.wqe_com, |
| OTHER_COMMAND); |
| |
| /* Word 12 */ |
| wqe->xmit_sequence.xmit_len = rspsize; |
| |
| nvmewqe->retry = 1; |
| nvmewqe->vport = phba->pport; |
| nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; |
| nvmewqe->iocb_flag |= LPFC_IO_NVME_LS; |
| |
| /* Xmit NVMET response to remote NPORT <did> */ |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC, |
| "6039 Xmit NVMET LS response to remote " |
| "NPORT x%x iotag:x%x oxid:x%x size:x%x\n", |
| ndlp->nlp_DID, nvmewqe->iotag, ctxp->oxid, |
| rspsize); |
| return nvmewqe; |
| |
| nvme_wqe_free_wqeq_exit: |
| nvmewqe->context2 = NULL; |
| nvmewqe->context3 = NULL; |
| lpfc_sli_release_iocbq(phba, nvmewqe); |
| return NULL; |
| } |
| |
| |
| static struct lpfc_iocbq * |
| lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *phba, |
| struct lpfc_async_xchg_ctx *ctxp) |
| { |
| struct nvmefc_tgt_fcp_req *rsp = &ctxp->hdlrctx.fcp_req; |
| struct lpfc_nvmet_tgtport *tgtp; |
| struct sli4_sge *sgl; |
| struct lpfc_nodelist *ndlp; |
| struct lpfc_iocbq *nvmewqe; |
| struct scatterlist *sgel; |
| union lpfc_wqe128 *wqe; |
| struct ulp_bde64 *bde; |
| dma_addr_t physaddr; |
| int i, cnt, nsegs; |
| bool use_pbde = false; |
| int xc = 1; |
| |
| if (!lpfc_is_link_up(phba)) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6107 NVMET prep FCP wqe: link err:" |
| "NPORT x%x oxid x%x ste %d\n", |
| ctxp->sid, ctxp->oxid, ctxp->state); |
| return NULL; |
| } |
| |
| ndlp = lpfc_findnode_did(phba->pport, ctxp->sid); |
| if (!ndlp || |
| ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) && |
| (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6108 NVMET prep FCP wqe: no ndlp: " |
| "NPORT x%x oxid x%x ste %d\n", |
| ctxp->sid, ctxp->oxid, ctxp->state); |
| return NULL; |
| } |
| |
| if (rsp->sg_cnt > lpfc_tgttemplate.max_sgl_segments) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6109 NVMET prep FCP wqe: seg cnt err: " |
| "NPORT x%x oxid x%x ste %d cnt %d\n", |
| ctxp->sid, ctxp->oxid, ctxp->state, |
| phba->cfg_nvme_seg_cnt); |
| return NULL; |
| } |
| nsegs = rsp->sg_cnt; |
| |
| tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private; |
| nvmewqe = ctxp->wqeq; |
| if (nvmewqe == NULL) { |
| /* Allocate buffer for command wqe */ |
| nvmewqe = ctxp->ctxbuf->iocbq; |
| if (nvmewqe == NULL) { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6110 NVMET prep FCP wqe: No " |
| "WQE: NPORT x%x oxid x%x ste %d\n", |
| ctxp->sid, ctxp->oxid, ctxp->state); |
| return NULL; |
| } |
| ctxp->wqeq = nvmewqe; |
| xc = 0; /* create new XRI */ |
| nvmewqe->sli4_lxritag = NO_XRI; |
| nvmewqe->sli4_xritag = NO_XRI; |
| } |
| |
| /* Sanity check */ |
| if (((ctxp->state == LPFC_NVME_STE_RCV) && |
| (ctxp->entry_cnt == 1)) || |
| (ctxp->state == LPFC_NVME_STE_DATA)) { |
| wqe = &nvmewqe->wqe; |
| } else { |
| lpfc_printf_log(phba, KERN_ERR, LOG_TRACE_EVENT, |
| "6111 Wrong state NVMET FCP: %d cnt %d\n", |
| ctxp->state, ctxp->entry_cnt); |
| return NULL; |
| } |
| |
| sgl = (struct sli4_sge *)ctxp->ctxbuf->sglq->sgl; |
| switch (rsp->op) { |
| case NVMET_FCOP_READDATA: |
| case NVMET_FCOP_READDATA_RSP: |
| /* From the tsend template, initialize words 7 - 11 */ |
| memcpy(&wqe->words[7], |
| &lpfc_tsend_cmd_template.words[7], |
| sizeof(uint32_t) * 5); |
| |
| /* Words 0 - 2 : The first sg segment */ |
| sgel = &rsp->sg[0]; |
| physaddr = sg_dma_address(sgel); |
| wqe->fcp_tsend.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; |
| wqe->fcp_tsend.bde.tus.f.bdeSize = sg_dma_len(sgel); |
| wqe->fcp_tsend.bde.addrLow = cpu_to_le32(putPaddrLow(physaddr)); |
| wqe->fcp_tsend.bde.addrHigh = |
| cpu_to_le32(putPaddrHigh(physaddr)); |
| |
| /* Word 3 */ |
| wqe->fcp_tsend.payload_offset_len = 0; |
| |
| /* Word 4 */ |
| wqe->fcp_tsend.relative_offset = ctxp->offset; |
| |
| /* Word 5 */ |
| wqe->fcp_tsend.reserved = 0; |
| |
| /* Word 6 */ |
| bf_set(wqe_ctxt_tag, &wqe->fcp_tsend.wqe_com, |
| phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); |
| bf_set(wqe_xri_tag, &wqe->fcp_tsend.wqe_com, |
| nvmewqe->sli4_xritag); |
| |
| /* Word 7 - set ar later */ |
| |
| /* Word 8 */ |
| wqe->fcp_tsend.wqe_com.abort_tag = nvmewqe->iotag; |
| |
| /* Word 9 */ |
| bf_set(wqe_reqtag, &wqe->fcp_tsend.wqe_com, nvmewqe->iotag); |
| bf_set(wqe_rcvoxid, &wqe->fcp_tsend.wqe_com, ctxp->oxid); |
| |
| /* Word 10 - set wqes later, in template xc=1 */ |
| if (!xc) |
| bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, 0); |
| |
| /* Word 12 */ |
| wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; |
| |
| /* Setup 2 SKIP SGEs */ |
| sgl->addr_hi = 0; |
| sgl->addr_lo = 0; |
| sgl->word2 = 0; |
| bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); |
| sgl->word2 = cpu_to_le32(sgl->word2); |
| sgl->sge_len = 0; |
| sgl++; |
| sgl->addr_hi = 0; |
| sgl->addr_lo = 0; |
| sgl->word2 = 0; |
| bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); |
| sgl->word2 = cpu_to_le32(sgl->word2); |
| sgl->sge_len = 0; |
| sgl++; |
| if (rsp->op == NVMET_FCOP_READDATA_RSP) { |
| atomic_inc(&tgtp->xmt_fcp_read_rsp); |
| |
| /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ |
| |
| if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) { |
| if (ndlp->nlp_flag & NLP_SUPPRESS_RSP) |
| bf_set(wqe_sup, |
| &wqe->fcp_tsend.wqe_com, 1); |
| } else { |
| bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 1); |
| bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 1); |
| bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, |
| ((rsp->rsplen >> 2) - 1)); |
| memcpy(&wqe->words[16], rsp->rspaddr, |
| rsp->rsplen); |
| } |
| } else { |
| atomic_inc(&tgtp->xmt_fcp_read); |
| |
| /* In template ar=1 wqes=0 sup=0 irsp=0 irsplen=0 */ |
| bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0); |
| } |
| break; |
| |
| case NVMET_FCOP_WRITEDATA: |
| /* From the treceive template, initialize words 3 - 11 */ |
| memcpy(&wqe->words[3], |
| &lpfc_treceive_cmd_template.words[3], |
| sizeof(uint32_t) * 9); |
| |
| /* Words 0 - 2 : First SGE is skipped, set invalid BDE type */ |
| wqe->fcp_treceive.bde.tus.f.bdeFlags = LPFC_SGE_TYPE_SKIP; |
| wqe->fcp_treceive.bde.tus.f.bdeSize = 0; |
| wqe->fcp_treceive.bde.addrLow = 0; |
| wqe->fcp_treceive.bde.addrHigh = 0; |
| |
| /* Word 4 */ |
| wqe->fcp_treceive.relative_offset = ctxp->offset; |
| |
| /* Word 6 */ |
| bf_set(wqe_ctxt_tag, &wqe->fcp_treceive.wqe_com, |
| phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); |
| bf_set(wqe_xri_tag, &wqe->fcp_treceive.wqe_com, |
| nvmewqe->sli4_xritag); |
| |
| /* Word 7 */ |
| |
| /* Word 8 */ |
| wqe->fcp_treceive.wqe_com.abort_tag = nvmewqe->iotag; |
| |
| /* Word 9 */ |
| bf_set(wqe_reqtag, &wqe->fcp_treceive.wqe_com, nvmewqe->iotag); |
| bf_set(wqe_rcvoxid, &wqe->fcp_treceive.wqe_com, ctxp->oxid); |
| |
| /* Word 10 - in template xc=1 */ |
| if (!xc) |
| bf_set(wqe_xc, &wqe->fcp_treceive.wqe_com, 0); |
| |
| /* Word 11 - check for pbde */ |
| if (nsegs == 1 && phba->cfg_enable_pbde) { |
| use_pbde = true; |
| /* Word 11 - PBDE bit already preset by template */ |
| } else { |
| /* Overwrite default template setting */ |
| bf_set(wqe_pbde, &wqe->fcp_treceive.wqe_com, 0); |
| } |
| |
| /* Word 12 */ |
| wqe->fcp_tsend.fcp_data_len = rsp->transfer_length; |
| |
| /* Setup 2 SKIP SGEs */ |
| sgl->addr_hi = 0; |
| sgl->addr_lo = 0; |
| sgl->word2 = 0; |
| bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); |
| sgl->word2 = cpu_to_le32(sgl->word2); |
| sgl->sge_len = 0; |
| sgl++; |
| sgl->addr_hi = 0; |
| sgl->addr_lo = 0; |
| sgl->word2 = 0; |
| bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_SKIP); |
| sgl->word2 = cpu_to_le32(sgl->word2); |
| sgl->sge_len = 0; |
| sgl++; |
| atomic_inc(&tgtp->xmt_fcp_write); |
| break; |
| |
| case NVMET_FCOP_RSP: |
| /* From the treceive template, initialize words 4 - 11 */ |
| memcpy(&wqe->words[4], |
| &lpfc_trsp_cmd_template.words[4], |
| sizeof(uint32_t) * 8); |
| |
| /* Words 0 - 2 */ |
| physaddr = rsp->rspdma; |
| wqe->fcp_trsp.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; |
| wqe->fcp_trsp.bde.tus.f.bdeSize = rsp->rsplen; |
| wqe->fcp_trsp.bde.addrLow = |
| cpu_to_le32(putPaddrLow(physaddr)); |
| wqe->fcp_trsp.bde.addrHigh = |
| cpu_to_le32(putPaddrHigh(physaddr)); |
| |
| /* Word 3 */ |
| wqe->fcp_trsp.response_len = rsp->rsplen; |
| |
| /* Word 6 */ |
| bf_set(wqe_ctxt_tag, &wqe->fcp_trsp.wqe_com, |
| phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]); |
| bf_set(wqe_xri_tag, &wqe->fcp_trsp.wqe_com, |
| nvmewqe->sli4_xritag); |
| |
| /* Word 7 */ |
| |
| /* Word 8 */ |
| wqe->fcp_trsp.wqe_com.abort_tag = nvmewqe->iotag; |
| |
| /* Word 9 */ |
| bf_set(wqe_reqtag, &wqe->fcp_trsp.wqe_com, nvmewqe->iotag); |
| bf_set(wqe_rcvoxid, &wqe->fcp_trsp.wqe_com, ctxp->oxid); |
| |
| /* Word 10 */ |
| if (xc) |
| bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, 1); |
| |
| /* Word 11 */ |
| /* In template wqes=0 irsp=0 irsplen=0 - good response */ |
| if (rsp->rsplen != LPFC_NVMET_SUCCESS_LEN) { |
| /* Bad response - embed it */ |
| bf_set(wqe_wqes, &wqe->fcp_trsp.wqe_com, 1); |
| bf_set(wqe_irsp, &wqe->fcp_trsp.wqe_com, 1); |
| bf_set(wqe_irsplen, &wqe->fcp_trsp.wqe_com, |
| ((rsp->rsplen >> 2) - 1)); |
| memcpy(&wqe->words[16], rsp->rspaddr, rsp->rsplen); |
| } |
| |
| /* Word 12 */ |
| wqe->fcp_trsp.rsvd_12_15[0] = 0; |
| |
| /* Use rspbuf, NOT sg list */ |
| nsegs = 0; |
| sgl->word2 = 0; |
| atomic_inc(&tgtp->xmt_fcp_rsp); |
| break; |
| |
| default: |
| lpfc_printf_log(phba, KERN_INFO, LOG_NVME_IOERR, |
| "6064 Unknown Rsp Op %d\n", |
| rsp->op); |
| return NULL; |
| } |
| |
| nvmewqe->retry = 1; |
| nvmewqe->vport = phba->pport; |
| nvmewqe->drvrTimeout = (phba->fc_ratov * 3) + LPFC_DRVR_TIMEOUT; |
| nvmewqe->context1 = ndlp; |
| |
| for_each_sg(rsp->sg, sgel, nsegs, i) { |
| physaddr = sg_dma_address(sgel); |
| cnt = sg_dma_len(sgel); |
| sgl->addr_hi = putPaddrHigh(physaddr); |
| sgl->addr_lo = putPaddrLow(physaddr); |
| sgl->word2 = 0; |
| bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); |
| bf_set(lpfc_sli4_sge_offset, sgl, ctxp->offset); |
| if ((i+1) == rsp->sg_cnt) |
| bf_set(lpfc_sli4_sge_last, sgl, 1); |
| sgl->word2 = cpu_to_le32(sgl->word2); |
| sgl->sge_len = cpu_to_le32(cnt); |
| sgl++; |
| ctxp->offset += cnt; |
| } |
| |
| bde = (struct ulp_bde64 *)&wqe->words[13]; |
| if (use_pbde) { |
| /* decrement sgl ptr backwards once to first data sge */ |
| sgl--; |
| |
| /* Words 13-15 (PBDE) */ |
| bde->addrLow = sgl->addr_lo; |
| bde->addrHigh = sgl->addr_hi; |
| bde->tus.f.bdeSize = le32_to_cpu(sgl->sge_len); |
| bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; |
| bde->tus.w = cpu_to_le32(bde->tus.w); |
|