diff options
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_sli.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_sli.c | 267 |
1 files changed, 247 insertions, 20 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 8d884d8..e8d3e47 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -59,7 +59,8 @@ static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *, uint32_t); static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *, uint8_t *, uint32_t *); - +static void lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *, + struct hbq_dmabuf *); static IOCB_t * lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq) { @@ -572,9 +573,9 @@ __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq) sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_xritag); if (sglq) { if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED - || ((iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT) + && ((iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT) && (iocbq->iocb.un.ulpWord[4] - == IOERR_SLI_ABORTED))) { + == IOERR_ABORT_REQUESTED))) { spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock, iflag); list_add(&sglq->list, @@ -767,6 +768,7 @@ lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd) case CMD_CLOSE_XRI_CX: case CMD_XRI_ABORTED_CX: case CMD_ABORT_MXRI64_CN: + case CMD_XMIT_BLS_RSP64_CX: type = LPFC_ABORT_IOCB; break; case CMD_RCV_SEQUENCE_CX: @@ -6081,6 +6083,23 @@ lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq, command_type = OTHER_COMMAND; xritag = 0; break; + case CMD_XMIT_BLS_RSP64_CX: + /* As BLS ABTS-ACC WQE is very different from other WQEs, + * we re-construct this WQE here based on information in + * iocbq from scratch. + */ + memset(wqe, 0, sizeof(union lpfc_wqe)); + bf_set(xmit_bls_rsp64_oxid, &wqe->xmit_bls_rsp, + iocbq->iocb.un.ulpWord[3]); + bf_set(xmit_bls_rsp64_rxid, &wqe->xmit_bls_rsp, + iocbq->sli4_xritag); + bf_set(xmit_bls_rsp64_seqcnthi, &wqe->xmit_bls_rsp, 0xffff); + bf_set(wqe_xmit_bls_pt, &wqe->xmit_bls_rsp.wqe_dest, 0x1); + bf_set(wqe_ctxt_tag, &wqe->xmit_bls_rsp.wqe_com, + iocbq->iocb.ulpContext); + /* Overwrite the pre-set comnd type with OTHER_COMMAND */ + command_type = OTHER_COMMAND; + break; case CMD_XRI_ABORTED_CX: case CMD_CREATE_XRI_CR: /* Do we expect to use this? */ /* words0-2 are all 0's no bde */ @@ -6139,7 +6158,7 @@ __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number, if (piocb->sli4_xritag == NO_XRI) { if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN || - piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) + piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN) sglq = NULL; else { sglq = __lpfc_sli_get_sglq(phba); @@ -6464,7 +6483,7 @@ lpfc_sli_setup(struct lpfc_hba *phba) pring->iotag_max = 4096; pring->lpfc_sli_rcv_async_status = lpfc_sli_async_event_handler; - pring->num_mask = 4; + pring->num_mask = LPFC_MAX_RING_MASK; pring->prt[0].profile = 0; /* Mask 0 */ pring->prt[0].rctl = FC_ELS_REQ; pring->prt[0].type = FC_ELS_DATA; @@ -6489,6 +6508,12 @@ lpfc_sli_setup(struct lpfc_hba *phba) pring->prt[3].type = FC_COMMON_TRANSPORT_ULP; pring->prt[3].lpfc_sli_rcv_unsol_event = lpfc_ct_unsol_event; + /* abort unsolicited sequence */ + pring->prt[4].profile = 0; /* Mask 4 */ + pring->prt[4].rctl = FC_RCTL_BA_ABTS; + pring->prt[4].type = FC_TYPE_BLS; + pring->prt[4].lpfc_sli_rcv_unsol_event = + lpfc_sli4_ct_abort_unsol_event; break; } totiocbsize += (pring->numCiocb * pring->sizeCiocb) + @@ -10870,6 +10895,177 @@ lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf) } /** + * lpfc_sli4_abort_partial_seq - Abort partially assembled unsol sequence + * @vport: pointer to a vitural port + * @dmabuf: pointer to a dmabuf that describes the FC sequence + * + * This function tries to abort from the partially assembed sequence, described + * by the information from basic abbort @dmabuf. It checks to see whether such + * partially assembled sequence held by the driver. If so, it shall free up all + * the frames from the partially assembled sequence. + * + * Return + * true -- if there is matching partially assembled sequence present and all + * the frames freed with the sequence; + * false -- if there is no matching partially assembled sequence present so + * nothing got aborted in the lower layer driver + **/ +static bool +lpfc_sli4_abort_partial_seq(struct lpfc_vport *vport, + struct hbq_dmabuf *dmabuf) +{ + struct fc_frame_header *new_hdr; + struct fc_frame_header *temp_hdr; + struct lpfc_dmabuf *d_buf, *n_buf, *h_buf; + struct hbq_dmabuf *seq_dmabuf = NULL; + + /* Use the hdr_buf to find the sequence that matches this frame */ + INIT_LIST_HEAD(&dmabuf->dbuf.list); + INIT_LIST_HEAD(&dmabuf->hbuf.list); + new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt; + list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) { + temp_hdr = (struct fc_frame_header *)h_buf->virt; + if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) || + (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) || + (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3))) + continue; + /* found a pending sequence that matches this frame */ + seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf); + break; + } + + /* Free up all the frames from the partially assembled sequence */ + if (seq_dmabuf) { + list_for_each_entry_safe(d_buf, n_buf, + &seq_dmabuf->dbuf.list, list) { + list_del_init(&d_buf->list); + lpfc_in_buf_free(vport->phba, d_buf); + } + return true; + } + return false; +} + +/** + * lpfc_sli4_seq_abort_acc_cmpl - Accept seq abort iocb complete handler + * @phba: Pointer to HBA context object. + * @cmd_iocbq: pointer to the command iocbq structure. + * @rsp_iocbq: pointer to the response iocbq structure. + * + * This function handles the sequence abort accept iocb command complete + * event. It properly releases the memory allocated to the sequence abort + * accept iocb. + **/ +static void +lpfc_sli4_seq_abort_acc_cmpl(struct lpfc_hba *phba, + struct lpfc_iocbq *cmd_iocbq, + struct lpfc_iocbq *rsp_iocbq) +{ + if (cmd_iocbq) + lpfc_sli_release_iocbq(phba, cmd_iocbq); +} + +/** + * lpfc_sli4_seq_abort_acc - Accept sequence abort + * @phba: Pointer to HBA context object. + * @fc_hdr: pointer to a FC frame header. + * + * This function sends a basic accept to a previous unsol sequence abort + * event after aborting the sequence handling. + **/ +static void +lpfc_sli4_seq_abort_acc(struct lpfc_hba *phba, + struct fc_frame_header *fc_hdr) +{ + struct lpfc_iocbq *ctiocb = NULL; + struct lpfc_nodelist *ndlp; + uint16_t oxid; + uint32_t sid; + IOCB_t *icmd; + + if (!lpfc_is_link_up(phba)) + return; + + sid = sli4_sid_from_fc_hdr(fc_hdr); + oxid = be16_to_cpu(fc_hdr->fh_ox_id); + + ndlp = lpfc_findnode_did(phba->pport, sid); + if (!ndlp) { + lpfc_printf_log(phba, KERN_WARNING, LOG_ELS, + "1268 Find ndlp returned NULL for oxid:x%x " + "SID:x%x\n", oxid, sid); + return; + } + + /* Allocate buffer for acc iocb */ + ctiocb = lpfc_sli_get_iocbq(phba); + if (!ctiocb) + return; + + icmd = &ctiocb->iocb; + icmd->un.xseq64.bdl.ulpIoTag32 = 0; + icmd->un.xseq64.bdl.bdeSize = 0; + icmd->un.xseq64.w5.hcsw.Dfctl = 0; + icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_BA_ACC; + icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_BLS; + + /* Fill in the rest of iocb fields */ + icmd->ulpCommand = CMD_XMIT_BLS_RSP64_CX; + icmd->ulpBdeCount = 0; + icmd->ulpLe = 1; + icmd->ulpClass = CLASS3; + icmd->ulpContext = ndlp->nlp_rpi; + icmd->un.ulpWord[3] = oxid; + + ctiocb->sli4_xritag = NO_XRI; + ctiocb->iocb_cmpl = NULL; + ctiocb->vport = phba->pport; + ctiocb->iocb_cmpl = lpfc_sli4_seq_abort_acc_cmpl; + + /* Xmit CT abts accept on exchange <xid> */ + lpfc_printf_log(phba, KERN_INFO, LOG_ELS, + "1200 Xmit CT ABTS ACC on exchange x%x Data: x%x\n", + CMD_XMIT_BLS_RSP64_CX, phba->link_state); + lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0); +} + +/** + * lpfc_sli4_handle_unsol_abort - Handle sli-4 unsolicited abort event + * @vport: Pointer to the vport on which this sequence was received + * @dmabuf: pointer to a dmabuf that describes the FC sequence + * + * This function handles an SLI-4 unsolicited abort event. If the unsolicited + * receive sequence is only partially assembed by the driver, it shall abort + * the partially assembled frames for the sequence. Otherwise, if the + * unsolicited receive sequence has been completely assembled and passed to + * the Upper Layer Protocol (UPL), it then mark the per oxid status for the + * unsolicited sequence has been aborted. After that, it will issue a basic + * accept to accept the abort. + **/ +void +lpfc_sli4_handle_unsol_abort(struct lpfc_vport *vport, + struct hbq_dmabuf *dmabuf) +{ + struct lpfc_hba *phba = vport->phba; + struct fc_frame_header fc_hdr; + bool abts_par; + + /* Try to abort partially assembled seq */ + abts_par = lpfc_sli4_abort_partial_seq(vport, dmabuf); + + /* Make a copy of fc_hdr before the dmabuf being released */ + memcpy(&fc_hdr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header)); + + /* Send abort to ULP if partially seq abort failed */ + if (abts_par == false) + lpfc_sli4_send_seq_to_ulp(vport, dmabuf); + else + lpfc_in_buf_free(phba, &dmabuf->dbuf); + /* Send basic accept (BA_ACC) to the abort requester */ + lpfc_sli4_seq_abort_acc(phba, &fc_hdr); +} + +/** * lpfc_seq_complete - Indicates if a sequence is complete * @dmabuf: pointer to a dmabuf that describes the FC sequence * @@ -10941,9 +11137,7 @@ lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) /* remove from receive buffer list */ list_del_init(&seq_dmabuf->hbuf.list); /* get the Remote Port's SID */ - sid = (fc_hdr->fh_s_id[0] << 16 | - fc_hdr->fh_s_id[1] << 8 | - fc_hdr->fh_s_id[2]); + sid = sli4_sid_from_fc_hdr(fc_hdr); /* Get an iocbq struct to fill in. */ first_iocbq = lpfc_sli_get_iocbq(vport->phba); if (first_iocbq) { @@ -11010,6 +11204,43 @@ lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf) return first_iocbq; } +static void +lpfc_sli4_send_seq_to_ulp(struct lpfc_vport *vport, + struct hbq_dmabuf *seq_dmabuf) +{ + struct fc_frame_header *fc_hdr; + struct lpfc_iocbq *iocbq, *curr_iocb, *next_iocb; + struct lpfc_hba *phba = vport->phba; + + fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; + iocbq = lpfc_prep_seq(vport, seq_dmabuf); + if (!iocbq) { + lpfc_printf_log(phba, KERN_ERR, LOG_SLI, + "2707 Ring %d handler: Failed to allocate " + "iocb Rctl x%x Type x%x received\n", + LPFC_ELS_RING, + fc_hdr->fh_r_ctl, fc_hdr->fh_type); + return; + } + if (!lpfc_complete_unsol_iocb(phba, + &phba->sli.ring[LPFC_ELS_RING], + iocbq, fc_hdr->fh_r_ctl, + fc_hdr->fh_type)) + lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, + "2540 Ring %d handler: unexpected Rctl " + "x%x Type x%x received\n", + LPFC_ELS_RING, + fc_hdr->fh_r_ctl, fc_hdr->fh_type); + + /* Free iocb created in lpfc_prep_seq */ + list_for_each_entry_safe(curr_iocb, next_iocb, + &iocbq->list, list) { + list_del_init(&curr_iocb->list); + lpfc_sli_release_iocbq(phba, curr_iocb); + } + lpfc_sli_release_iocbq(phba, iocbq); +} + /** * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware * @phba: Pointer to HBA context object. @@ -11030,7 +11261,6 @@ lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr; struct lpfc_vport *vport; uint32_t fcfi; - struct lpfc_iocbq *iocbq; /* Clear hba flag and get all received buffers into the cmplq */ spin_lock_irq(&phba->hbalock); @@ -11051,6 +11281,12 @@ lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba, lpfc_in_buf_free(phba, &dmabuf->dbuf); return; } + /* Handle the basic abort sequence (BA_ABTS) event */ + if (fc_hdr->fh_r_ctl == FC_RCTL_BA_ABTS) { + lpfc_sli4_handle_unsol_abort(vport, dmabuf); + return; + } + /* Link this frame */ seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf); if (!seq_dmabuf) { @@ -11068,17 +11304,8 @@ lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba, dmabuf->tag = -1; return; } - fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt; - iocbq = lpfc_prep_seq(vport, seq_dmabuf); - if (!lpfc_complete_unsol_iocb(phba, - &phba->sli.ring[LPFC_ELS_RING], - iocbq, fc_hdr->fh_r_ctl, - fc_hdr->fh_type)) - lpfc_printf_log(phba, KERN_WARNING, LOG_SLI, - "2540 Ring %d handler: unexpected Rctl " - "x%x Type x%x received\n", - LPFC_ELS_RING, - fc_hdr->fh_r_ctl, fc_hdr->fh_type); + /* Send the complete sequence to the upper layer protocol */ + lpfc_sli4_send_seq_to_ulp(vport, seq_dmabuf); } /** |