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scsi: qla2xxx: Add FC-NVMe command handling
This patch adds logic to handle the completion of FC-NVMe commands and creates a sub-command in the SRB command structure to manage NVMe commands. Signed-off-by: Darren Trapp <darren.trapp@cavium.com> Signed-off-by: Duane Grigsby <duane.grigsby@cavium.com> Signed-off-by: Anil Gurumurthy <anil.gurumurhty@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Duane Grigsby
Martin K. Petersen
parent
a5d42f4cff
commit
7401bc18d1
@ -412,6 +412,20 @@ struct srb_iocb {
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struct {
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struct imm_ntfy_from_isp *ntfy;
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} nack;
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struct {
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__le16 comp_status;
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uint16_t rsp_pyld_len;
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uint8_t aen_op;
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void *desc;
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/* These are only used with ls4 requests */
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int cmd_len;
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int rsp_len;
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dma_addr_t cmd_dma;
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dma_addr_t rsp_dma;
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uint32_t dl;
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uint32_t timeout_sec;
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} nvme;
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} u;
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struct timer_list timer;
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@ -437,6 +451,7 @@ struct srb_iocb {
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#define SRB_NACK_PLOGI 16
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#define SRB_NACK_PRLI 17
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#define SRB_NACK_LOGO 18
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#define SRB_NVME_CMD 19
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#define SRB_PRLI_CMD 21
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enum {
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@ -4110,6 +4125,8 @@ typedef struct scsi_qla_host {
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struct nvme_fc_local_port *nvme_local_port;
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atomic_t nvme_ref_count;
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struct list_head nvme_rport_list;
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atomic_t nvme_active_aen_cnt;
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uint16_t nvme_last_rptd_aen;
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uint16_t fcoe_vlan_id;
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uint16_t fcoe_fcf_idx;
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@ -7,6 +7,9 @@
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#ifndef __QLA_FW_H
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#define __QLA_FW_H
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#include <linux/nvme.h>
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#include <linux/nvme-fc.h>
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#define MBS_CHECKSUM_ERROR 0x4010
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#define MBS_INVALID_PRODUCT_KEY 0x4020
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@ -603,9 +606,14 @@ struct sts_entry_24xx {
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uint32_t residual_len; /* FW calc residual transfer length. */
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uint16_t reserved_1;
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union {
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uint16_t reserved_1;
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uint16_t nvme_rsp_pyld_len;
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};
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uint16_t state_flags; /* State flags. */
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#define SF_TRANSFERRED_DATA BIT_11
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#define SF_NVME_ERSP BIT_6
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#define SF_FCP_RSP_DMA BIT_0
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uint16_t retry_delay;
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@ -615,8 +623,16 @@ struct sts_entry_24xx {
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uint32_t rsp_residual_count; /* FCP RSP residual count. */
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uint32_t sense_len; /* FCP SENSE length. */
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uint32_t rsp_data_len; /* FCP response data length. */
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uint8_t data[28]; /* FCP response/sense information. */
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union {
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struct {
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uint32_t rsp_data_len; /* FCP response data length */
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uint8_t data[28]; /* FCP rsp/sense information */
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};
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struct nvme_fc_ersp_iu nvme_ersp;
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uint8_t nvme_ersp_data[32];
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};
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/*
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* If DIF Error is set in comp_status, these additional fields are
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* defined:
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@ -1799,6 +1799,79 @@ qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
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sp->done(sp, 0);
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}
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static void
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qla24xx_nvme_iocb_entry(scsi_qla_host_t *vha, struct req_que *req, void *tsk)
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{
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const char func[] = "NVME-IOCB";
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fc_port_t *fcport;
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srb_t *sp;
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struct srb_iocb *iocb;
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struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
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uint16_t state_flags;
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struct nvmefc_fcp_req *fd;
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uint16_t ret = 0;
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struct srb_iocb *nvme;
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sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
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if (!sp)
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return;
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iocb = &sp->u.iocb_cmd;
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fcport = sp->fcport;
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iocb->u.nvme.comp_status = le16_to_cpu(sts->comp_status);
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state_flags = le16_to_cpu(sts->state_flags);
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fd = iocb->u.nvme.desc;
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nvme = &sp->u.iocb_cmd;
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if (unlikely(nvme->u.nvme.aen_op))
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atomic_dec(&sp->vha->nvme_active_aen_cnt);
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/*
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* State flags: Bit 6 and 0.
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* If 0 is set, we don't care about 6.
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* both cases resp was dma'd to host buffer
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* if both are 0, that is good path case.
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* if six is set and 0 is clear, we need to
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* copy resp data from status iocb to resp buffer.
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*/
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if (!(state_flags & (SF_FCP_RSP_DMA | SF_NVME_ERSP))) {
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iocb->u.nvme.rsp_pyld_len = 0;
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} else if ((state_flags & SF_FCP_RSP_DMA)) {
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iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
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} else if (state_flags & SF_NVME_ERSP) {
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uint32_t *inbuf, *outbuf;
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uint16_t iter;
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inbuf = (uint32_t *)&sts->nvme_ersp_data;
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outbuf = (uint32_t *)fd->rspaddr;
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iocb->u.nvme.rsp_pyld_len = le16_to_cpu(sts->nvme_rsp_pyld_len);
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iter = iocb->u.nvme.rsp_pyld_len >> 2;
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for (; iter; iter--)
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*outbuf++ = swab32(*inbuf++);
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} else { /* unhandled case */
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ql_log(ql_log_warn, fcport->vha, 0x503a,
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"NVME-%s error. Unhandled state_flags of %x\n",
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sp->name, state_flags);
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}
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fd->transferred_length = fd->payload_length -
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le32_to_cpu(sts->residual_len);
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if (sts->entry_status) {
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ql_log(ql_log_warn, fcport->vha, 0x5038,
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"NVME-%s error - hdl=%x entry-status(%x).\n",
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sp->name, sp->handle, sts->entry_status);
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ret = QLA_FUNCTION_FAILED;
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} else if (sts->comp_status != cpu_to_le16(CS_COMPLETE)) {
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ql_log(ql_log_warn, fcport->vha, 0x5039,
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"NVME-%s error - hdl=%x completion status(%x) resid=%x ox_id=%x\n",
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sp->name, sp->handle, sts->comp_status,
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le32_to_cpu(sts->residual_len), sts->ox_id);
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ret = QLA_FUNCTION_FAILED;
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}
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sp->done(sp, ret);
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}
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/**
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* qla2x00_process_response_queue() - Process response queue entries.
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* @ha: SCSI driver HA context
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@ -2289,6 +2362,12 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
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return;
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}
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/* NVME completion. */
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if (sp->type == SRB_NVME_CMD) {
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qla24xx_nvme_iocb_entry(vha, req, pkt);
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return;
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}
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if (unlikely((state_flags & BIT_1) && (sp->type == SRB_BIDI_CMD))) {
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qla25xx_process_bidir_status_iocb(vha, pkt, req, handle);
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return;
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@ -695,8 +695,10 @@ qla2x00_sp_free_dma(void *ptr)
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}
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end:
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CMD_SP(cmd) = NULL;
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qla2x00_rel_sp(sp);
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if (sp->type != SRB_NVME_CMD) {
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CMD_SP(cmd) = NULL;
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qla2x00_rel_sp(sp);
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}
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}
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void
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@ -5993,6 +5995,18 @@ qla2x00_timer(scsi_qla_host_t *vha)
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if (!list_empty(&vha->work_list))
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start_dpc++;
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/*
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* FC-NVME
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* see if the active AEN count has changed from what was last reported.
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*/
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if (atomic_read(&vha->nvme_active_aen_cnt) != vha->nvme_last_rptd_aen) {
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vha->nvme_last_rptd_aen =
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atomic_read(&vha->nvme_active_aen_cnt);
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ql_log(ql_log_info, vha, 0x3002,
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"reporting new aen count of %d to the fw\n",
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vha->nvme_last_rptd_aen);
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}
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/* Schedule the DPC routine if needed */
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if ((test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
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test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) ||
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