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author | James Smart <jsmart2021@gmail.com> | 2017-02-12 13:52:34 -0800 |
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committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-02-22 18:41:43 -0500 |
commit | f358dd0ca26c152a5e0922e269996268dcb98a9d (patch) | |
tree | 08b27cb9d428fa1fee89c68194b4529a21b53712 /drivers/scsi/lpfc/lpfc_sli.c | |
parent | bd2cdd5e400f5914bc30d5cfb0a0185cf51e4424 (diff) | |
download | linux-f358dd0ca26c152a5e0922e269996268dcb98a9d.tar.gz linux-f358dd0ca26c152a5e0922e269996268dcb98a9d.tar.bz2 linux-f358dd0ca26c152a5e0922e269996268dcb98a9d.zip |
scsi: lpfc: NVME Target: Base modifications
NVME Target: Base modifications
This set of patches adds the base modifications for NVME target support
The base modifications consist of:
- Additional module parameters or configuration tuning
- Enablement of configuration mode for NVME target. Ties into the
queueing model put into place by the initiator basemods patches.
- Target-specific buffer pools, dma pools, sgl pools
[mkp: fixed space at end of file]
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.c')
-rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 107 |
1 files changed, 104 insertions, 3 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 5f6ad67d5a73..f2cd0f37e03f 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -45,6 +45,7 @@ #include "lpfc.h" #include "lpfc_scsi.h" #include "lpfc_nvme.h" +#include "lpfc_nvmet.h" #include "lpfc_crtn.h" #include "lpfc_logmsg.h" #include "lpfc_compat.h" @@ -976,6 +977,34 @@ __lpfc_sli_get_els_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq) } /** + * __lpfc_sli_get_nvmet_sglq - Allocates an iocb object from sgl pool + * @phba: Pointer to HBA context object. + * @piocb: Pointer to the iocbq. + * + * This function is called with the sgl_list lock held. This function + * gets a new driver sglq object from the sglq list. If the + * list is not empty then it is successful, it returns pointer to the newly + * allocated sglq object else it returns NULL. + **/ +struct lpfc_sglq * +__lpfc_sli_get_nvmet_sglq(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq) +{ + struct list_head *lpfc_nvmet_sgl_list; + struct lpfc_sglq *sglq = NULL; + + lpfc_nvmet_sgl_list = &phba->sli4_hba.lpfc_nvmet_sgl_list; + + lockdep_assert_held(&phba->sli4_hba.sgl_list_lock); + + list_remove_head(lpfc_nvmet_sgl_list, sglq, struct lpfc_sglq, list); + if (!sglq) + return NULL; + phba->sli4_hba.lpfc_sglq_active_list[sglq->sli4_lxritag] = sglq; + sglq->state = SGL_ALLOCATED; + return sglq; +} + +/** * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool * @phba: Pointer to HBA context object. * @@ -1031,6 +1060,18 @@ __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) if (sglq) { + if (iocbq->iocb_flag & LPFC_IO_NVMET) { + spin_lock_irqsave(&phba->sli4_hba.sgl_list_lock, + iflag); + sglq->state = SGL_FREED; + sglq->ndlp = NULL; + list_add_tail(&sglq->list, + &phba->sli4_hba.lpfc_nvmet_sgl_list); + spin_unlock_irqrestore( + &phba->sli4_hba.sgl_list_lock, iflag); + goto out; + } + pring = phba->sli4_hba.els_wq->pring; if ((iocbq->iocb_flag & LPFC_EXCHANGE_BUSY) && (sglq->state != SGL_XRI_ABORTED)) { @@ -1056,13 +1097,15 @@ __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) } } +out: /* * Clean all volatile data fields, preserve iotag and node struct. */ memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean); iocbq->sli4_lxritag = NO_XRI; iocbq->sli4_xritag = NO_XRI; - iocbq->iocb_flag &= ~(LPFC_IO_NVME | LPFC_IO_NVME_LS); + iocbq->iocb_flag &= ~(LPFC_IO_NVME | LPFC_IO_NVMET | + LPFC_IO_NVME_LS); list_add_tail(&iocbq->list, &phba->lpfc_iocb_list); } @@ -2450,6 +2493,14 @@ lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, { int i; + switch (fch_type) { + case FC_TYPE_NVME: + /* todo: tgt: forward NVME LS to transport */ + return 1; + default: + break; + } + /* unSolicited Responses */ if (pring->prt[0].profile) { if (pring->prt[0].lpfc_sli_rcv_unsol_event) @@ -6761,7 +6812,31 @@ lpfc_sli4_hba_setup(struct lpfc_hba *phba) } phba->sli4_hba.els_xri_cnt = rc; - if (phba->nvmet_support == 0) { + if (phba->nvmet_support) { + /* update host nvmet xri-sgl sizes and mappings */ + rc = lpfc_sli4_nvmet_sgl_update(phba); + if (unlikely(rc)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "6308 Failed to update nvmet-sgl size " + "and mapping: %d\n", rc); + goto out_destroy_queue; + } + + /* register the nvmet sgl pool to the port */ + rc = lpfc_sli4_repost_sgl_list( + phba, + &phba->sli4_hba.lpfc_nvmet_sgl_list, + phba->sli4_hba.nvmet_xri_cnt); + if (unlikely(rc < 0)) { + lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, + "3117 Error %d during nvmet " + "sgl post\n", rc); + rc = -ENODEV; + goto out_destroy_queue; + } + phba->sli4_hba.nvmet_xri_cnt = rc; + /* todo: tgt: create targetport */ + } else { /* update host scsi xri-sgl sizes and mappings */ rc = lpfc_sli4_scsi_sgl_update(phba); if (unlikely(rc)) { @@ -13006,7 +13081,7 @@ lpfc_sli4_hba_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe, if (phba->sli4_hba.nvme_cq_map && (cqid == phba->sli4_hba.nvme_cq_map[qidx])) { - /* Process NVME command completion */ + /* Process NVME / NVMET command completion */ cq = phba->sli4_hba.nvme_cq[qidx]; goto process_cq; } @@ -17912,6 +17987,7 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, uint32_t ring_number, struct lpfc_iocbq *pwqe) { union lpfc_wqe *wqe = &pwqe->wqe; + struct lpfc_nvmet_rcv_ctx *ctxp; struct lpfc_queue *wq; struct lpfc_sglq *sglq; struct lpfc_sli_ring *pring; @@ -17961,5 +18037,30 @@ lpfc_sli4_issue_wqe(struct lpfc_hba *phba, uint32_t ring_number, return 0; } + /* NVMET requests */ + if (pwqe->iocb_flag & LPFC_IO_NVMET) { + /* Get the IO distribution (hba_wqidx) for WQ assignment. */ + pring = phba->sli4_hba.nvme_wq[pwqe->hba_wqidx]->pring; + + spin_lock_irqsave(&pring->ring_lock, iflags); + ctxp = pwqe->context2; + sglq = ctxp->rqb_buffer->sglq; + if (pwqe->sli4_xritag == NO_XRI) { + pwqe->sli4_lxritag = sglq->sli4_lxritag; + pwqe->sli4_xritag = sglq->sli4_xritag; + } + bf_set(wqe_xri_tag, &pwqe->wqe.xmit_bls_rsp.wqe_com, + pwqe->sli4_xritag); + wq = phba->sli4_hba.nvme_wq[pwqe->hba_wqidx]; + bf_set(wqe_cqid, &wqe->generic.wqe_com, + phba->sli4_hba.nvme_cq[pwqe->hba_wqidx]->queue_id); + if (lpfc_sli4_wq_put(wq, wqe)) { + spin_unlock_irqrestore(&pring->ring_lock, iflags); + return WQE_ERROR; + } + lpfc_sli_ringtxcmpl_put(phba, pring, pwqe); + spin_unlock_irqrestore(&pring->ring_lock, iflags); + return 0; + } return WQE_ERROR; } |