--- /dev/null
+/*******************************************************************
+ * This file is part of the Emulex Linux Device Driver for *
+ * Fibre Channsel Host Bus Adapters. *
+ * Copyright (C) 2004-2016 Emulex. All rights reserved. *
+ * EMULEX and SLI are trademarks of Emulex. *
+ * www.emulex.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 <../drivers/nvme/host/nvme.h>
+#include <linux/nvme-fc-driver.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_nvmet.h"
+#include "lpfc_logmsg.h"
+#include "lpfc_crtn.h"
+#include "lpfc_vport.h"
+
+static struct lpfc_iocbq *lpfc_nvmet_prep_ls_wqe(struct lpfc_hba *,
+ struct lpfc_nvmet_rcv_ctx *,
+ dma_addr_t rspbuf,
+ uint16_t rspsize);
+static struct lpfc_iocbq *lpfc_nvmet_prep_fcp_wqe(struct lpfc_hba *,
+ struct lpfc_nvmet_rcv_ctx *);
+static int lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *,
+ struct lpfc_nvmet_rcv_ctx *,
+ uint32_t, uint16_t);
+static int lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *,
+ struct lpfc_nvmet_rcv_ctx *,
+ uint32_t, uint16_t);
+static int lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *,
+ struct lpfc_nvmet_rcv_ctx *,
+ uint32_t, uint16_t);
+
+/**
+ * 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 frees memory resources used for the NVME commands.
+ **/
+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;
+ struct nvmefc_tgt_ls_req *rsp;
+ struct lpfc_nvmet_rcv_ctx *ctxp;
+ uint32_t status, result;
+
+ status = bf_get(lpfc_wcqe_c_status, wcqe);
+ result = wcqe->parameter;
+ if (!phba->targetport)
+ goto out;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+
+ if (status)
+ atomic_inc(&tgtp->xmt_ls_rsp_error);
+ else
+ atomic_inc(&tgtp->xmt_ls_rsp_cmpl);
+
+out:
+ ctxp = cmdwqe->context2;
+ rsp = &ctxp->ctx.ls_req;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+ "6038 %s: Entrypoint: ctx %p status %x/%x\n", __func__,
+ ctxp, status, result);
+
+ lpfc_nlp_put(cmdwqe->context1);
+ cmdwqe->context2 = NULL;
+ cmdwqe->context3 = NULL;
+ lpfc_sli_release_iocbq(phba, cmdwqe);
+ rsp->done(rsp);
+ kfree(ctxp);
+}
+
+/**
+ * lpfc_nvmet_rq_post - Repost a NVMET RQ DMA buffer and clean up context
+ * @phba: HBA buffer is associated with
+ * @ctxp: context to clean up
+ * @mp: Buffer to free
+ *
+ * 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_rq_post(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp,
+ struct lpfc_dmabuf *mp)
+{
+ if (ctxp) {
+ if (ctxp->txrdy) {
+ pci_pool_free(phba->txrdy_payload_pool, ctxp->txrdy,
+ ctxp->txrdy_phys);
+ ctxp->txrdy = NULL;
+ ctxp->txrdy_phys = 0;
+ }
+ ctxp->state = LPFC_NVMET_STE_FREE;
+ }
+ lpfc_rq_buf_free(phba, mp);
+}
+
+/**
+ * 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_nvmet_rcv_ctx *ctxp;
+ uint32_t status, result, op, start_clean;
+
+ ctxp = cmdwqe->context2;
+ rsp = &ctxp->ctx.fcp_req;
+ op = rsp->op;
+ ctxp->flag &= ~LPFC_NVMET_IO_INP;
+
+ status = bf_get(lpfc_wcqe_c_status, wcqe);
+ result = wcqe->parameter;
+
+ if (!phba->targetport)
+ goto out;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ if (status) {
+ rsp->fcp_error = NVME_SC_DATA_XFER_ERROR;
+ rsp->transferred_length = 0;
+ atomic_inc(&tgtp->xmt_fcp_rsp_error);
+ } else {
+ rsp->fcp_error = NVME_SC_SUCCESS;
+ if (op == NVMET_FCOP_RSP)
+ rsp->transferred_length = rsp->rsplen;
+ else
+ rsp->transferred_length = rsp->transfer_length;
+ atomic_inc(&tgtp->xmt_fcp_rsp_cmpl);
+ }
+
+out:
+ if ((op == NVMET_FCOP_READDATA_RSP) ||
+ (op == NVMET_FCOP_RSP)) {
+ /* Sanity check */
+ ctxp->state = LPFC_NVMET_STE_DONE;
+ ctxp->entry_cnt++;
+ rsp->done(rsp);
+ /* Let Abort cmpl repost the context */
+ if (!(ctxp->flag & LPFC_NVMET_ABORT_OP))
+ lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf);
+ } else {
+ ctxp->entry_cnt++;
+ start_clean = offsetof(struct lpfc_iocbq, wqe);
+ memset(((char *)cmdwqe) + start_clean, 0,
+ (sizeof(struct lpfc_iocbq) - start_clean));
+ rsp->done(rsp);
+ }
+}
+
+static int
+lpfc_nvmet_xmt_ls_rsp(struct nvmet_fc_target_port *tgtport,
+ struct nvmefc_tgt_ls_req *rsp)
+{
+ struct lpfc_nvmet_rcv_ctx *ctxp =
+ container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.ls_req);
+ struct lpfc_hba *phba = ctxp->phba;
+ struct hbq_dmabuf *nvmebuf =
+ (struct hbq_dmabuf *)ctxp->rqb_buffer;
+ struct lpfc_iocbq *nvmewqeq;
+ struct lpfc_nvmet_tgtport *nvmep = tgtport->private;
+ struct lpfc_dmabuf dmabuf;
+ struct ulp_bde64 bpl;
+ int rc;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+ "6023 %s: Entrypoint ctx %p %p\n", __func__,
+ ctxp, tgtport);
+
+ nvmewqeq = lpfc_nvmet_prep_ls_wqe(phba, ctxp, rsp->rspdma,
+ rsp->rsplen);
+ if (nvmewqeq == NULL) {
+ atomic_inc(&nvmep->xmt_ls_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6150 LS Drop IO x%x: Prep\n",
+ ctxp->oxid);
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+ lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp,
+ ctxp->sid, ctxp->oxid);
+ return -ENOMEM;
+ }
+
+ /* 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 = rsp->rsplen;
+ bpl.tus.f.bdeFlags = 0;
+ bpl.tus.w = le32_to_cpu(bpl.tus.w);
+
+ nvmewqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_rsp_cmp;
+ nvmewqeq->iocb_cmpl = NULL;
+ nvmewqeq->context2 = ctxp;
+
+ rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, nvmewqeq);
+ 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);
+ ctxp->rqb_buffer = 0;
+ atomic_inc(&nvmep->xmt_ls_rsp);
+ return 0;
+ }
+ /* Give back resources */
+ atomic_inc(&nvmep->xmt_ls_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6151 LS Drop IO x%x: Issue %d\n",
+ ctxp->oxid, rc);
+
+ lpfc_nlp_put(nvmewqeq->context1);
+
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+ lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, ctxp->sid, ctxp->oxid);
+ return -ENXIO;
+}
+
+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_nvmet_rcv_ctx *ctxp =
+ container_of(rsp, struct lpfc_nvmet_rcv_ctx, ctx.fcp_req);
+ struct lpfc_hba *phba = ctxp->phba;
+ struct lpfc_iocbq *nvmewqeq;
+ unsigned long iflags;
+ int rc;
+
+ if (rsp->op == NVMET_FCOP_ABORT) {
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6103 Abort op: oxri x%x %d cnt %d\n",
+ ctxp->oxid, ctxp->state, ctxp->entry_cnt);
+ atomic_inc(&lpfc_nvmep->xmt_fcp_abort);
+ ctxp->entry_cnt++;
+ ctxp->flag |= LPFC_NVMET_ABORT_OP;
+ if (ctxp->flag & LPFC_NVMET_IO_INP)
+ lpfc_nvmet_sol_fcp_issue_abort(phba, ctxp, ctxp->sid,
+ ctxp->oxid);
+ else
+ lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, ctxp->sid,
+ ctxp->oxid);
+ return 0;
+ }
+
+ /* Sanity check */
+ if (ctxp->state == LPFC_NVMET_STE_ABORT) {
+ atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6102 Bad state IO x%x aborted\n",
+ ctxp->oxid);
+ 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_NVME_IOERR,
+ "6152 FCP Drop IO x%x: Prep\n",
+ ctxp->oxid);
+ 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;
+
+ /* For now we take hbalock */
+ spin_lock_irqsave(&phba->hbalock, iflags);
+ rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, nvmewqeq);
+ spin_unlock_irqrestore(&phba->hbalock, iflags);
+ if (rc == WQE_SUCCESS) {
+ ctxp->flag |= LPFC_NVMET_IO_INP;
+ return 0;
+ }
+
+ /* Give back resources */
+ atomic_inc(&lpfc_nvmep->xmt_fcp_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6153 FCP Drop IO x%x: Issue: %d\n",
+ ctxp->oxid, rc);
+
+ ctxp->wqeq->hba_wqidx = 0;
+ nvmewqeq->context2 = NULL;
+ nvmewqeq->context3 = NULL;
+aerr:
+ return -ENXIO;
+}
+
+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 */
+ complete(&tport->tport_unreg_done);
+}
+
+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,
+
+ .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),
+};
+
+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 = 0;
+
+ if (phba->targetport)
+ return 0;
+
+ 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;
+
+ lpfc_tgttemplate.max_hw_queues = phba->cfg_nvme_io_channel;
+ lpfc_tgttemplate.max_sgl_segments = phba->cfg_sg_seg_cnt;
+ lpfc_tgttemplate.target_features = NVMET_FCTGTFEAT_READDATA_RSP |
+ NVMET_FCTGTFEAT_NEEDS_CMD_CPUSCHED;
+
+ error = nvmet_fc_register_targetport(&pinfo, &lpfc_tgttemplate,
+ &phba->pcidev->dev,
+ &phba->targetport);
+ if (error) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
+ "6025 Cannot register NVME targetport "
+ "x%x\n", error);
+ phba->targetport = NULL;
+ } 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: %p, private %p "
+ "portnm %llx nodenm %llx\n",
+ phba->targetport, tgtp,
+ pinfo.port_name, pinfo.node_name);
+
+ 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_rsp, 0);
+ atomic_set(&tgtp->xmt_ls_drop, 0);
+ atomic_set(&tgtp->xmt_ls_rsp_error, 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_abort, 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_rsp_cmpl, 0);
+ atomic_set(&tgtp->xmt_fcp_rsp_error, 0);
+ atomic_set(&tgtp->xmt_fcp_rsp_drop, 0);
+ atomic_set(&tgtp->xmt_abort_rsp, 0);
+ atomic_set(&tgtp->xmt_abort_rsp_error, 0);
+ atomic_set(&tgtp->xmt_abort_cmpl, 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 %p did x%x\n",
+ phba->targetport, vport->fc_myDID);
+
+ phba->targetport->port_id = vport->fc_myDID;
+ return 0;
+}
+
+void
+lpfc_nvmet_destroy_targetport(struct lpfc_hba *phba)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+
+ if (phba->nvmet_support == 0)
+ return;
+ if (phba->targetport) {
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ init_completion(&tgtp->tport_unreg_done);
+ nvmet_fc_unregister_targetport(phba->targetport);
+ wait_for_completion_timeout(&tgtp->tport_unreg_done, 5);
+ }
+ phba->targetport = NULL;
+}
+
+/**
+ * lpfc_nvmet_unsol_ls_buffer - Process an unsolicited event data buffer
+ * @phba: pointer to lpfc hba data structure.
+ * @pring: pointer to a SLI ring.
+ * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
+ *
+ * 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_ls_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct hbq_dmabuf *nvmebuf)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct fc_frame_header *fc_hdr;
+ struct lpfc_nvmet_rcv_ctx *ctxp;
+ uint32_t *payload;
+ uint32_t size, oxid, sid, rc;
+
+ if (!nvmebuf || !phba->targetport) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6154 LS Drop IO\n");
+ goto dropit;
+ }
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ payload = (uint32_t *)(nvmebuf->dbuf.virt);
+ fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
+ size = bf_get(lpfc_rcqe_length, &nvmebuf->cq_event.cqe.rcqe_cmpl);
+ oxid = be16_to_cpu(fc_hdr->fh_ox_id);
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+
+ ctxp = kzalloc(sizeof(struct lpfc_nvmet_rcv_ctx), GFP_ATOMIC);
+ if (ctxp == NULL) {
+ atomic_inc(&tgtp->rcv_ls_req_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6155 LS Drop IO x%x: Alloc\n",
+ oxid);
+dropit:
+ if (nvmebuf)
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+ return;
+ }
+ ctxp->phba = phba;
+ ctxp->size = size;
+ ctxp->oxid = oxid;
+ ctxp->sid = sid;
+ ctxp->wqeq = NULL;
+ ctxp->state = LPFC_NVMET_STE_RCV;
+ ctxp->rqb_buffer = (void *)nvmebuf;
+ /*
+ * The calling sequence should be:
+ * nvmet_fc_rcv_ls_req -> lpfc_nvmet_xmt_ls_rsp/cmp ->_req->done
+ * lpfc_nvmet_xmt_ls_rsp_cmp should free the allocated ctxp.
+ */
+ atomic_inc(&tgtp->rcv_ls_req_in);
+ rc = nvmet_fc_rcv_ls_req(phba->targetport, &ctxp->ctx.ls_req,
+ payload, size);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+ "6037 %s: ctx %p sz %d rc %d: %08x %08x %08x "
+ "%08x %08x %08x\n", __func__, ctxp, size, rc,
+ *payload, *(payload+1), *(payload+2),
+ *(payload+3), *(payload+4), *(payload+5));
+ if (rc == 0) {
+ atomic_inc(&tgtp->rcv_ls_req_out);
+ return;
+ }
+ atomic_inc(&tgtp->rcv_ls_req_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6156 LS Drop IO x%x: nvmet_fc_rcv_ls_req %d\n",
+ ctxp->oxid, rc);
+
+ /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */
+ if (nvmebuf)
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+
+ atomic_inc(&tgtp->xmt_ls_abort);
+ lpfc_nvmet_unsol_ls_issue_abort(phba, ctxp, sid, oxid);
+}
+
+/**
+ * lpfc_nvmet_unsol_fcp_buffer - Process an unsolicited event data buffer
+ * @phba: pointer to lpfc hba data structure.
+ * @pring: pointer to a SLI ring.
+ * @nvmebuf: pointer to lpfc nvme command HBQ data structure.
+ *
+ * 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,
+ struct lpfc_sli_ring *pring,
+ struct rqb_dmabuf *nvmebuf,
+ uint64_t isr_timestamp)
+{
+ struct lpfc_nvmet_rcv_ctx *ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct fc_frame_header *fc_hdr;
+ uint32_t *payload;
+ uint32_t size, oxid, sid, rc;
+
+ oxid = 0;
+ if (!nvmebuf || !phba->targetport) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6157 FCP Drop IO\n");
+ goto dropit;
+ }
+
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ payload = (uint32_t *)(nvmebuf->dbuf.virt);
+ fc_hdr = (struct fc_frame_header *)(nvmebuf->hbuf.virt);
+ size = nvmebuf->bytes_recv;
+ oxid = be16_to_cpu(fc_hdr->fh_ox_id);
+ sid = sli4_sid_from_fc_hdr(fc_hdr);
+
+ ctxp = (struct lpfc_nvmet_rcv_ctx *)nvmebuf->context;
+ if (ctxp == NULL) {
+ atomic_inc(&tgtp->rcv_fcp_cmd_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6158 FCP Drop IO x%x: Alloc\n",
+ oxid);
+ lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf);
+ /* Cannot send ABTS without context */
+ return;
+ }
+ memset(ctxp, 0, sizeof(ctxp->ctx));
+ ctxp->wqeq = NULL;
+ ctxp->txrdy = NULL;
+ ctxp->offset = 0;
+ ctxp->phba = phba;
+ ctxp->size = size;
+ ctxp->oxid = oxid;
+ ctxp->sid = sid;
+ ctxp->state = LPFC_NVMET_STE_RCV;
+ ctxp->rqb_buffer = nvmebuf;
+ ctxp->entry_cnt = 1;
+ ctxp->flag = 0;
+
+ atomic_inc(&tgtp->rcv_fcp_cmd_in);
+ /*
+ * 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.
+ */
+ rc = nvmet_fc_rcv_fcp_req(phba->targetport, &ctxp->ctx.fcp_req,
+ payload, size);
+
+ /* Process FCP command */
+ if (rc == 0) {
+ atomic_inc(&tgtp->rcv_fcp_cmd_out);
+ return;
+ }
+
+ atomic_inc(&tgtp->rcv_fcp_cmd_drop);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6159 FCP Drop IO x%x: nvmet_fc_rcv_fcp_req x%x\n",
+ ctxp->oxid, rc);
+dropit:
+ if (oxid) {
+ lpfc_nvmet_unsol_fcp_issue_abort(phba, ctxp, sid, oxid);
+ return;
+ }
+
+ if (nvmebuf) {
+ nvmebuf->iocbq->hba_wqidx = 0;
+ /* We assume a rcv'ed cmd ALWAYs fits into 1 buffer */
+ lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf);
+ }
+}
+
+/**
+ * lpfc_nvmet_unsol_ls_event - Process an unsolicited event from an nvme nport
+ * @phba: pointer to lpfc hba data structure.
+ * @pring: pointer to a SLI ring.
+ * @nvmebuf: pointer to received nvme data structure.
+ *
+ * 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_ls_buffer() after properly set up the buffer from the
+ * SLI RQ on which the unsolicited event was received.
+ **/
+void
+lpfc_nvmet_unsol_ls_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
+ struct lpfc_iocbq *piocb)
+{
+ struct lpfc_dmabuf *d_buf;
+ struct hbq_dmabuf *nvmebuf;
+
+ d_buf = piocb->context2;
+ nvmebuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
+
+ if (phba->nvmet_support == 0) {
+ lpfc_in_buf_free(phba, &nvmebuf->dbuf);
+ return;
+ }
+ lpfc_nvmet_unsol_ls_buffer(phba, pring, nvmebuf);
+}
+
+/**
+ * lpfc_nvmet_unsol_fcp_event - Process an unsolicited event from an nvme nport
+ * @phba: pointer to lpfc hba data structure.
+ * @pring: pointer to a SLI ring.
+ * @nvmebuf: pointer to received nvme data structure.
+ *
+ * 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,
+ struct lpfc_sli_ring *pring,
+ struct rqb_dmabuf *nvmebuf,
+ uint64_t isr_timestamp)
+{
+ if (phba->nvmet_support == 0) {
+ lpfc_nvmet_rq_post(phba, NULL, &nvmebuf->hbuf);
+ return;
+ }
+ lpfc_nvmet_unsol_fcp_buffer(phba, pring, nvmebuf,
+ isr_timestamp);
+}
+
+/**
+ * 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_nvmet_rcv_ctx *ctxp,
+ dma_addr_t rspbuf, uint16_t rspsize)
+{
+ struct lpfc_nodelist *ndlp;
+ struct lpfc_iocbq *nvmewqe;
+ union lpfc_wqe *wqe;
+
+ if (!lpfc_is_link_up(phba)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
+ "6104 lpfc_nvmet_prep_ls_wqe: link err: "
+ "NPORT x%x oxid:x%x\n",
+ ctxp->sid, ctxp->oxid);
+ return NULL;
+ }
+
+ /* Allocate buffer for command wqe */
+ nvmewqe = lpfc_sli_get_iocbq(phba);
+ if (nvmewqe == NULL) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
+ "6105 lpfc_nvmet_prep_ls_wqe: No WQE: "
+ "NPORT x%x oxid:x%x\n",
+ ctxp->sid, ctxp->oxid);
+ return NULL;
+ }
+
+ ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
+ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
+ ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_DISC,
+ "6106 lpfc_nvmet_prep_ls_wqe: No ndlp: "
+ "NPORT x%x oxid:x%x\n",
+ ctxp->sid, ctxp->oxid);
+ 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_DD_SOL_CTL);
+ 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 NVME response to remote NPORT <did> */
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_DISC,
+ "6039 Xmit NVME 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_nvmet_rcv_ctx *ctxp)
+{
+ struct nvmefc_tgt_fcp_req *rsp = &ctxp->ctx.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;
+ uint32_t *txrdy;
+ dma_addr_t physaddr;
+ int i, cnt;
+ int xc = 1;
+
+ if (!lpfc_is_link_up(phba)) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6107 lpfc_nvmet_prep_fcp_wqe: link err:"
+ "NPORT x%x oxid:x%x\n", ctxp->sid,
+ ctxp->oxid);
+ return NULL;
+ }
+
+ ndlp = lpfc_findnode_did(phba->pport, ctxp->sid);
+ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
+ ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6108 lpfc_nvmet_prep_fcp_wqe: no ndlp: "
+ "NPORT x%x oxid:x%x\n",
+ ctxp->sid, ctxp->oxid);
+ return NULL;
+ }
+
+ if (rsp->sg_cnt > phba->cfg_sg_seg_cnt) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6109 lpfc_nvmet_prep_fcp_wqe: seg cnt err: "
+ "NPORT x%x oxid:x%x\n",
+ ctxp->sid, ctxp->oxid);
+ return NULL;
+ }
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ nvmewqe = ctxp->wqeq;
+ if (nvmewqe == NULL) {
+ /* Allocate buffer for command wqe */
+ nvmewqe = ctxp->rqb_buffer->iocbq;
+ if (nvmewqe == NULL) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6110 lpfc_nvmet_prep_fcp_wqe: No "
+ "WQE: NPORT x%x oxid:x%x\n",
+ ctxp->sid, ctxp->oxid);
+ 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_NVMET_STE_RCV) &&
+ (ctxp->entry_cnt == 1)) ||
+ ((ctxp->state == LPFC_NVMET_STE_DATA) &&
+ (ctxp->entry_cnt > 1))) {
+ wqe = (union lpfc_wqe128 *)&nvmewqe->wqe;
+ } else {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6111 Wrong state %s: %d cnt %d\n",
+ __func__, ctxp->state, ctxp->entry_cnt);
+ return NULL;
+ }
+
+ sgl = (struct sli4_sge *)ctxp->rqb_buffer->sglq->sgl;
+ switch (rsp->op) {
+ case NVMET_FCOP_READDATA:
+ case NVMET_FCOP_READDATA_RSP:
+ /* 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 */
+
+ /* 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 */
+ bf_set(wqe_cmnd, &wqe->fcp_tsend.wqe_com, CMD_FCP_TSEND64_WQE);
+
+ /* 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 */
+ bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
+ bf_set(wqe_dbde, &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);
+ bf_set(wqe_ebde_cnt, &wqe->fcp_tsend.wqe_com, 0);
+ bf_set(wqe_xc, &wqe->fcp_tsend.wqe_com, xc);
+ bf_set(wqe_nvme, &wqe->fcp_tsend.wqe_com, 1);
+ if (phba->cfg_nvme_oas)
+ bf_set(wqe_oas, &wqe->fcp_tsend.wqe_com, 1);
+
+ /* Word 11 */
+ bf_set(wqe_cqid, &wqe->fcp_tsend.wqe_com,
+ LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_cmd_type, &wqe->fcp_tsend.wqe_com,
+ FCP_COMMAND_TSEND);
+
+ /* 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);
+ bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 1);
+ if ((ndlp->nlp_flag & NLP_SUPPRESS_RSP) &&
+ (rsp->rsplen == 12)) {
+ bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 1);
+ bf_set(wqe_wqes, &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);
+ } else {
+ bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
+ 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);
+
+ bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
+ bf_set(wqe_wqes, &wqe->fcp_tsend.wqe_com, 0);
+ bf_set(wqe_irsp, &wqe->fcp_tsend.wqe_com, 0);
+ bf_set(wqe_ar, &wqe->fcp_tsend.wqe_com, 0);
+ bf_set(wqe_irsplen, &wqe->fcp_tsend.wqe_com, 0);
+ }
+ ctxp->state = LPFC_NVMET_STE_DATA;
+ break;
+
+ case NVMET_FCOP_WRITEDATA:
+ /* Words 0 - 2 : The first sg segment */
+ txrdy = pci_pool_alloc(phba->txrdy_payload_pool,
+ GFP_KERNEL, &physaddr);
+ if (!txrdy) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_IOERR,
+ "6041 Bad txrdy buffer: oxid x%x\n",
+ ctxp->oxid);
+ return NULL;
+ }
+ ctxp->txrdy = txrdy;
+ ctxp->txrdy_phys = physaddr;
+ wqe->fcp_treceive.bde.tus.f.bdeFlags = BUFF_TYPE_BDE_64;
+ wqe->fcp_treceive.bde.tus.f.bdeSize = TXRDY_PAYLOAD_LEN;
+ wqe->fcp_treceive.bde.addrLow =
+ cpu_to_le32(putPaddrLow(physaddr));
+ wqe->fcp_treceive.bde.addrHigh =
+ cpu_to_le32(putPaddrHigh(physaddr));
+
+ /* Word 3 */
+ wqe->fcp_treceive.payload_offset_len = TXRDY_PAYLOAD_LEN;
+
+ /* Word 4 */
+ wqe->fcp_treceive.relative_offset = ctxp->offset;
+
+ /* Word 5 */
+
+ /* 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 */
+ bf_set(wqe_ar, &wqe->fcp_treceive.wqe_com, 0);
+ bf_set(wqe_cmnd, &wqe->fcp_treceive.wqe_com,
+ CMD_FCP_TRECEIVE64_WQE);
+
+ /* 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 */
+ bf_set(wqe_nvme, &wqe->fcp_treceive.wqe_com, 1);
+ bf_set(wqe_dbde, &wqe->fcp_treceive.wqe_com, 1);
+ 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_treceive.wqe_com, xc);
+ bf_set(wqe_wqes, &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_nvme, &wqe->fcp_treceive.wqe_com, 1);
+ if (phba->cfg_nvme_oas)
+ bf_set(wqe_oas, &wqe->fcp_treceive.wqe_com, 1);
+
+ /* Word 11 */
+ bf_set(wqe_cqid, &wqe->fcp_treceive.wqe_com,
+ LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_cmd_type, &wqe->fcp_treceive.wqe_com,
+ FCP_COMMAND_TRECEIVE);
+ bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
+
+ /* Word 12 */
+ wqe->fcp_tsend.fcp_data_len = rsp->transfer_length;
+
+ /* Setup 1 TXRDY and 1 SKIP SGE */
+ txrdy[0] = 0;
+ txrdy[1] = cpu_to_be32(rsp->transfer_length);
+ txrdy[2] = 0;
+
+ sgl->addr_hi = putPaddrHigh(physaddr);
+ sgl->addr_lo = putPaddrLow(physaddr);
+ sgl->word2 = 0;
+ bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA);
+ sgl->word2 = cpu_to_le32(sgl->word2);
+ sgl->sge_len = cpu_to_le32(TXRDY_PAYLOAD_LEN);
+ 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++;
+ ctxp->state = LPFC_NVMET_STE_DATA;
+ atomic_inc(&tgtp->xmt_fcp_write);
+ break;
+
+ case NVMET_FCOP_RSP:
+ /* Words 0 - 2 */
+ sgel = &rsp->sg[0];
+ 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 4 */
+ wqe->fcp_trsp.rsvd_4_5[0] = 0;
+
+
+ /* Word 5 */
+
+ /* 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 */
+ bf_set(wqe_ag, &wqe->fcp_trsp.wqe_com, 1);
+ bf_set(wqe_cmnd, &wqe->fcp_trsp.wqe_com, CMD_FCP_TRSP64_WQE);
+
+ /* 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 */
+ bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
+ bf_set(wqe_dbde, &wqe->fcp_trsp.wqe_com, 0);
+ bf_set(wqe_iod, &wqe->fcp_trsp.wqe_com, LPFC_WQE_IOD_WRITE);
+ bf_set(wqe_lenloc, &wqe->fcp_trsp.wqe_com,
+ LPFC_WQE_LENLOC_WORD3);
+ bf_set(wqe_xc, &wqe->fcp_trsp.wqe_com, xc);
+ bf_set(wqe_nvme, &wqe->fcp_trsp.wqe_com, 1);
+ if (phba->cfg_nvme_oas)
+ bf_set(wqe_oas, &wqe->fcp_trsp.wqe_com, 1);
+
+ /* Word 11 */
+ bf_set(wqe_cqid, &wqe->fcp_trsp.wqe_com,
+ LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_cmd_type, &wqe->fcp_trsp.wqe_com,
+ FCP_COMMAND_TRSP);
+ bf_set(wqe_sup, &wqe->fcp_tsend.wqe_com, 0);
+ ctxp->state = LPFC_NVMET_STE_RSP;
+
+ if (rsp->rsplen == LPFC_NVMET_SUCCESS_LEN) {
+ /* Good response - all zero's on wire */
+ bf_set(wqe_wqes, &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);
+ } else {
+ 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);
+ }
+
+ /* Use rspbuf, NOT sg list */
+ rsp->sg_cnt = 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 (i = 0; i < rsp->sg_cnt; i++) {
+ sgel = &rsp->sg[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;
+ }
+ return nvmewqe;
+}
+
+/**
+ * lpfc_nvmet_sol_fcp_abort_cmp - Completion handler for ABTS
+ * @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 ABTS for FCP cmds
+ * The function frees memory resources used for the NVME commands.
+ **/
+static void
+lpfc_nvmet_sol_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
+ struct lpfc_wcqe_complete *wcqe)
+{
+ struct lpfc_nvmet_rcv_ctx *ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ uint32_t status, result;
+
+ ctxp = cmdwqe->context2;
+ status = bf_get(lpfc_wcqe_c_status, wcqe);
+ result = wcqe->parameter;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ atomic_inc(&tgtp->xmt_abort_cmpl);
+
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
+ "6165 Abort cmpl: xri x%x WCQE: %08x %08x %08x %08x\n",
+ ctxp->oxid, wcqe->word0, wcqe->total_data_placed,
+ result, wcqe->word3);
+
+ ctxp->state = LPFC_NVMET_STE_DONE;
+ lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf);
+
+ cmdwqe->context2 = NULL;
+ cmdwqe->context3 = NULL;
+ lpfc_sli_release_iocbq(phba, cmdwqe);
+}
+
+/**
+ * lpfc_nvmet_xmt_fcp_abort_cmp - Completion handler for ABTS
+ * @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 ABTS for FCP cmds
+ * The function frees memory resources used for the NVME commands.
+ **/
+static void
+lpfc_nvmet_xmt_fcp_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
+ struct lpfc_wcqe_complete *wcqe)
+{
+ struct lpfc_nvmet_rcv_ctx *ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ uint32_t status, result;
+
+ ctxp = cmdwqe->context2;
+ status = bf_get(lpfc_wcqe_c_status, wcqe);
+ result = wcqe->parameter;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ atomic_inc(&tgtp->xmt_abort_cmpl);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6070 Abort cmpl: ctx %p WCQE: %08x %08x %08x %08x\n",
+ ctxp, wcqe->word0, wcqe->total_data_placed,
+ result, wcqe->word3);
+
+ if (ctxp) {
+ /* Sanity check */
+ if (ctxp->state != LPFC_NVMET_STE_ABORT) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
+ "6112 ABORT Wrong state:%d oxid x%x\n",
+ ctxp->state, ctxp->oxid);
+ }
+ ctxp->state = LPFC_NVMET_STE_DONE;
+ lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf);
+ cmdwqe->context2 = NULL;
+ cmdwqe->context3 = NULL;
+ }
+}
+
+/**
+ * lpfc_nvmet_xmt_ls_abort_cmp - Completion handler for ABTS
+ * @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 ABTS for LS cmds
+ * The function frees memory resources used for the NVME commands.
+ **/
+static void
+lpfc_nvmet_xmt_ls_abort_cmp(struct lpfc_hba *phba, struct lpfc_iocbq *cmdwqe,
+ struct lpfc_wcqe_complete *wcqe)
+{
+ struct lpfc_nvmet_rcv_ctx *ctxp;
+ struct lpfc_nvmet_tgtport *tgtp;
+ uint32_t status, result;
+
+ ctxp = cmdwqe->context2;
+ status = bf_get(lpfc_wcqe_c_status, wcqe);
+ result = wcqe->parameter;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ atomic_inc(&tgtp->xmt_abort_cmpl);
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6083 Abort cmpl: ctx %p WCQE: %08x %08x %08x %08x\n",
+ ctxp, wcqe->word0, wcqe->total_data_placed,
+ result, wcqe->word3);
+
+ if (ctxp) {
+ cmdwqe->context2 = NULL;
+ cmdwqe->context3 = NULL;
+ lpfc_sli_release_iocbq(phba, cmdwqe);
+ kfree(ctxp);
+ } else
+ lpfc_sli_release_iocbq(phba, cmdwqe);
+}
+
+static int
+lpfc_nvmet_unsol_issue_abort(struct lpfc_hba *phba,
+ struct lpfc_nvmet_rcv_ctx *ctxp,
+ uint32_t sid, uint16_t xri)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct lpfc_iocbq *abts_wqeq;
+ union lpfc_wqe *wqe_abts;
+ struct lpfc_nodelist *ndlp;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6067 %s: Entrypoint: sid %x xri %x\n", __func__,
+ sid, xri);
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+
+ ndlp = lpfc_findnode_did(phba->pport, sid);
+ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
+ ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
+ "6134 Drop ABTS - wrong NDLP state x%x.\n",
+ ndlp->nlp_state);
+
+ /* No failure to an ABTS request. */
+ return 0;
+ }
+
+ abts_wqeq = ctxp->wqeq;
+ wqe_abts = &abts_wqeq->wqe;
+ ctxp->state = LPFC_NVMET_STE_ABORT;
+
+ /*
+ * Since we zero the whole WQE, we need to ensure we set the WQE fields
+ * that were initialized in lpfc_sli4_nvmet_alloc.
+ */
+ memset(wqe_abts, 0, sizeof(union lpfc_wqe));
+
+ /* Word 5 */
+ bf_set(wqe_dfctl, &wqe_abts->xmit_sequence.wge_ctl, 0);
+ bf_set(wqe_ls, &wqe_abts->xmit_sequence.wge_ctl, 1);
+ bf_set(wqe_la, &wqe_abts->xmit_sequence.wge_ctl, 0);
+ bf_set(wqe_rctl, &wqe_abts->xmit_sequence.wge_ctl, FC_RCTL_BA_ABTS);
+ bf_set(wqe_type, &wqe_abts->xmit_sequence.wge_ctl, FC_TYPE_BLS);
+
+ /* Word 6 */
+ bf_set(wqe_ctxt_tag, &wqe_abts->xmit_sequence.wqe_com,
+ phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]);
+ bf_set(wqe_xri_tag, &wqe_abts->xmit_sequence.wqe_com,
+ abts_wqeq->sli4_xritag);
+
+ /* Word 7 */
+ bf_set(wqe_cmnd, &wqe_abts->xmit_sequence.wqe_com,
+ CMD_XMIT_SEQUENCE64_WQE);
+ bf_set(wqe_ct, &wqe_abts->xmit_sequence.wqe_com, SLI4_CT_RPI);
+ bf_set(wqe_class, &wqe_abts->xmit_sequence.wqe_com, CLASS3);
+ bf_set(wqe_pu, &wqe_abts->xmit_sequence.wqe_com, 0);
+
+ /* Word 8 */
+ wqe_abts->xmit_sequence.wqe_com.abort_tag = abts_wqeq->iotag;
+
+ /* Word 9 */
+ bf_set(wqe_reqtag, &wqe_abts->xmit_sequence.wqe_com, abts_wqeq->iotag);
+ /* Needs to be set by caller */
+ bf_set(wqe_rcvoxid, &wqe_abts->xmit_sequence.wqe_com, xri);
+
+ /* Word 10 */
+ bf_set(wqe_dbde, &wqe_abts->xmit_sequence.wqe_com, 1);
+ bf_set(wqe_iod, &wqe_abts->xmit_sequence.wqe_com, LPFC_WQE_IOD_WRITE);
+ bf_set(wqe_lenloc, &wqe_abts->xmit_sequence.wqe_com,
+ LPFC_WQE_LENLOC_WORD12);
+ bf_set(wqe_ebde_cnt, &wqe_abts->xmit_sequence.wqe_com, 0);
+ bf_set(wqe_qosd, &wqe_abts->xmit_sequence.wqe_com, 0);
+
+ /* Word 11 */
+ bf_set(wqe_cqid, &wqe_abts->xmit_sequence.wqe_com,
+ LPFC_WQE_CQ_ID_DEFAULT);
+ bf_set(wqe_cmd_type, &wqe_abts->xmit_sequence.wqe_com,
+ OTHER_COMMAND);
+
+ abts_wqeq->vport = phba->pport;
+ abts_wqeq->context1 = ndlp;
+ abts_wqeq->context2 = ctxp;
+ abts_wqeq->context3 = NULL;
+ abts_wqeq->rsvd2 = 0;
+ /* hba_wqidx should already be setup from command we are aborting */
+ abts_wqeq->iocb.ulpCommand = CMD_XMIT_SEQUENCE64_CR;
+ abts_wqeq->iocb.ulpLe = 1;
+
+ lpfc_printf_log(phba, KERN_INFO, LOG_NVME_ABTS,
+ "6069 Issue ABTS to xri x%x reqtag x%x\n",
+ xri, abts_wqeq->iotag);
+ return 1;
+}
+
+static int
+lpfc_nvmet_sol_fcp_issue_abort(struct lpfc_hba *phba,
+ struct lpfc_nvmet_rcv_ctx *ctxp,
+ uint32_t sid, uint16_t xri)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct lpfc_iocbq *abts_wqeq;
+ union lpfc_wqe *abts_wqe;
+ struct lpfc_nodelist *ndlp;
+ unsigned long flags;
+ int rc;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ if (!ctxp->wqeq) {
+ ctxp->wqeq = ctxp->rqb_buffer->iocbq;
+ ctxp->wqeq->hba_wqidx = 0;
+ }
+
+ ndlp = lpfc_findnode_did(phba->pport, sid);
+ if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) ||
+ ((ndlp->nlp_state != NLP_STE_UNMAPPED_NODE) &&
+ (ndlp->nlp_state != NLP_STE_MAPPED_NODE))) {
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
+ "6160 Drop ABTS - wrong NDLP state x%x.\n",
+ ndlp->nlp_state);
+
+ /* No failure to an ABTS request. */
+ return 0;
+ }
+
+ /* Issue ABTS for this WQE based on iotag */
+ ctxp->abort_wqeq = lpfc_sli_get_iocbq(phba);
+ if (!ctxp->abort_wqeq) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
+ "6161 Abort failed: No wqeqs: "
+ "xri: x%x\n", ctxp->oxid);
+ /* No failure to an ABTS request. */
+ return 0;
+ }
+ abts_wqeq = ctxp->abort_wqeq;
+ abts_wqe = &abts_wqeq->wqe;
+ ctxp->state = LPFC_NVMET_STE_ABORT;
+
+ /* Announce entry to new IO submit field. */
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME_ABTS,
+ "6162 Abort Request to rport DID x%06x "
+ "for xri x%x x%x\n",
+ ctxp->sid, ctxp->oxid, ctxp->wqeq->sli4_xritag);
+
+ /* If the hba is getting reset, this flag is set. It is
+ * cleared when the reset is complete and rings reestablished.
+ */
+ spin_lock_irqsave(&phba->hbalock, flags);
+ /* driver queued commands are in process of being flushed */
+ if (phba->hba_flag & HBA_NVME_IOQ_FLUSH) {
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
+ "6163 Driver in reset cleanup - flushing "
+ "NVME Req now. hba_flag x%x oxid x%x\n",
+ phba->hba_flag, ctxp->oxid);
+ lpfc_sli_release_iocbq(phba, abts_wqeq);
+ return 0;
+ }
+
+ /* Outstanding abort is in progress */
+ if (abts_wqeq->iocb_flag & LPFC_DRIVER_ABORTED) {
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
+ "6164 Outstanding NVME I/O Abort Request "
+ "still pending on oxid x%x\n",
+ ctxp->oxid);
+ lpfc_sli_release_iocbq(phba, abts_wqeq);
+ return 0;
+ }
+
+ /* Ready - mark outstanding as aborted by driver. */
+ abts_wqeq->iocb_flag |= LPFC_DRIVER_ABORTED;
+
+ /* WQEs are reused. Clear stale data and set key fields to
+ * zero like ia, iaab, iaar, xri_tag, and ctxt_tag.
+ */
+ memset(abts_wqe, 0, sizeof(union lpfc_wqe));
+
+ /* word 3 */
+ bf_set(abort_cmd_criteria, &abts_wqe->abort_cmd, T_XRI_TAG);
+
+ /* word 7 */
+ bf_set(wqe_ct, &abts_wqe->abort_cmd.wqe_com, 0);
+ bf_set(wqe_cmnd, &abts_wqe->abort_cmd.wqe_com, CMD_ABORT_XRI_CX);
+
+ /* word 8 - tell the FW to abort the IO associated with this
+ * outstanding exchange ID.
+ */
+ abts_wqe->abort_cmd.wqe_com.abort_tag = ctxp->wqeq->sli4_xritag;
+
+ /* word 9 - this is the iotag for the abts_wqe completion. */
+ bf_set(wqe_reqtag, &abts_wqe->abort_cmd.wqe_com,
+ abts_wqeq->iotag);
+
+ /* word 10 */
+ bf_set(wqe_qosd, &abts_wqe->abort_cmd.wqe_com, 1);
+ bf_set(wqe_lenloc, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_LENLOC_NONE);
+
+ /* word 11 */
+ bf_set(wqe_cmd_type, &abts_wqe->abort_cmd.wqe_com, OTHER_COMMAND);
+ bf_set(wqe_wqec, &abts_wqe->abort_cmd.wqe_com, 1);
+ bf_set(wqe_cqid, &abts_wqe->abort_cmd.wqe_com, LPFC_WQE_CQ_ID_DEFAULT);
+
+ /* ABTS WQE must go to the same WQ as the WQE to be aborted */
+ abts_wqeq->hba_wqidx = ctxp->wqeq->hba_wqidx;
+ abts_wqeq->wqe_cmpl = lpfc_nvmet_sol_fcp_abort_cmp;
+ abts_wqeq->iocb_cmpl = 0;
+ abts_wqeq->iocb_flag |= LPFC_IO_NVME;
+ abts_wqeq->context2 = ctxp;
+ rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ if (rc == WQE_SUCCESS)
+ return 0;
+
+ lpfc_sli_release_iocbq(phba, abts_wqeq);
+ lpfc_printf_log(phba, KERN_ERR, LOG_NVME,
+ "6166 Failed abts issue_wqe with status x%x "
+ "for oxid x%x.\n",
+ rc, ctxp->oxid);
+ return 1;
+}
+
+
+static int
+lpfc_nvmet_unsol_fcp_issue_abort(struct lpfc_hba *phba,
+ struct lpfc_nvmet_rcv_ctx *ctxp,
+ uint32_t sid, uint16_t xri)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct lpfc_iocbq *abts_wqeq;
+ unsigned long flags;
+ int rc;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ if (!ctxp->wqeq) {
+ ctxp->wqeq = ctxp->rqb_buffer->iocbq;
+ ctxp->wqeq->hba_wqidx = 0;
+ }
+
+ rc = lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
+ if (rc == 0)
+ goto aerr;
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ abts_wqeq = ctxp->wqeq;
+ abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_fcp_abort_cmp;
+ abts_wqeq->iocb_cmpl = 0;
+ abts_wqeq->iocb_flag |= LPFC_IO_NVMET;
+ rc = lpfc_sli4_issue_wqe(phba, LPFC_FCP_RING, abts_wqeq);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ if (rc == WQE_SUCCESS) {
+ atomic_inc(&tgtp->xmt_abort_rsp);
+ return 0;
+ }
+
+aerr:
+ lpfc_nvmet_rq_post(phba, ctxp, &ctxp->rqb_buffer->hbuf);
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
+ "6135 Failed to Issue ABTS for oxid x%x. Status x%x\n",
+ ctxp->oxid, rc);
+ return 1;
+}
+
+static int
+lpfc_nvmet_unsol_ls_issue_abort(struct lpfc_hba *phba,
+ struct lpfc_nvmet_rcv_ctx *ctxp,
+ uint32_t sid, uint16_t xri)
+{
+ struct lpfc_nvmet_tgtport *tgtp;
+ struct lpfc_iocbq *abts_wqeq;
+ union lpfc_wqe *wqe_abts;
+ unsigned long flags;
+ int rc;
+
+ tgtp = (struct lpfc_nvmet_tgtport *)phba->targetport->private;
+ if (!ctxp->wqeq) {
+ /* Issue ABTS for this WQE based on iotag */
+ ctxp->wqeq = lpfc_sli_get_iocbq(phba);
+ if (!ctxp->wqeq) {
+ lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
+ "6068 Abort failed: No wqeqs: "
+ "xri: x%x\n", xri);
+ /* No failure to an ABTS request. */
+ kfree(ctxp);
+ return 0;
+ }
+ }
+ abts_wqeq = ctxp->wqeq;
+ wqe_abts = &abts_wqeq->wqe;
+ lpfc_nvmet_unsol_issue_abort(phba, ctxp, sid, xri);
+
+ spin_lock_irqsave(&phba->hbalock, flags);
+ abts_wqeq->wqe_cmpl = lpfc_nvmet_xmt_ls_abort_cmp;
+ abts_wqeq->iocb_cmpl = 0;
+ abts_wqeq->iocb_flag |= LPFC_IO_NVME_LS;
+ rc = lpfc_sli4_issue_wqe(phba, LPFC_ELS_RING, abts_wqeq);
+ spin_unlock_irqrestore(&phba->hbalock, flags);
+ if (rc == WQE_SUCCESS) {
+ atomic_inc(&tgtp->xmt_abort_rsp);
+ return 0;
+ }
+
+ atomic_inc(&tgtp->xmt_abort_rsp_error);
+ abts_wqeq->context2 = NULL;
+ abts_wqeq->context3 = NULL;
+ lpfc_sli_release_iocbq(phba, abts_wqeq);
+ kfree(ctxp);
+ lpfc_printf_log(phba, KERN_WARNING, LOG_NVME_ABTS,
+ "6056 Failed to Issue ABTS. Status x%x\n", rc);
+ return 0;
+}
projects / platform / kernel / linux-rpi.git / commitdiff