static void post_qp_event(struct iwch_dev *rnicp, struct iwch_cq *chp, struct respQ_msg_t *rsp_msg, enum ib_event_type ib_event, int send_term) { struct ib_event event; struct iwch_qp_attributes attrs; struct iwch_qp *qhp; spin_lock(&rnicp->lock); qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe)); if (!qhp) { printk(KERN_ERR "%s unaffiliated error 0x%x qpid 0x%x\n", __func__, CQE_STATUS(rsp_msg->cqe), CQE_QPID(rsp_msg->cqe)); spin_unlock(&rnicp->lock); return; } if ((qhp->attr.state == IWCH_QP_STATE_ERROR) || (qhp->attr.state == IWCH_QP_STATE_TERMINATE)) { PDBG("%s AE received after RTS - " "qp state %d qpid 0x%x status 0x%x\n", __func__, qhp->attr.state, qhp->wq.qpid, CQE_STATUS(rsp_msg->cqe)); spin_unlock(&rnicp->lock); return; } printk(KERN_ERR "%s - AE qpid 0x%x opcode %d status 0x%x " "type %d wrid.hi 0x%x wrid.lo 0x%x \n", __func__, CQE_QPID(rsp_msg->cqe), CQE_OPCODE(rsp_msg->cqe), CQE_STATUS(rsp_msg->cqe), CQE_TYPE(rsp_msg->cqe), CQE_WRID_HI(rsp_msg->cqe), CQE_WRID_LOW(rsp_msg->cqe)); atomic_inc(&qhp->refcnt); spin_unlock(&rnicp->lock); event.event = ib_event; event.device = chp->ibcq.device; if (ib_event == IB_EVENT_CQ_ERR) event.element.cq = &chp->ibcq; else event.element.qp = &qhp->ibqp; if (qhp->ibqp.event_handler) (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context); if (qhp->attr.state == IWCH_QP_STATE_RTS) { attrs.next_state = IWCH_QP_STATE_TERMINATE; iwch_modify_qp(qhp->rhp, qhp, IWCH_QP_ATTR_NEXT_STATE, &attrs, 1); if (send_term) iwch_post_terminate(qhp, rsp_msg); } if (atomic_dec_and_test(&qhp->refcnt)) wake_up(&qhp->wait); }
/* * Get one cq entry from c4iw and map it to openib. * * Returns: * 0 cqe returned * -ENODATA EMPTY; * -EAGAIN caller must try again * any other -errno fatal error */ static int c4iw_poll_cq_one(struct c4iw_cq *chp, struct ib_wc *wc) { struct c4iw_srq *srq = NULL; struct c4iw_qp *qhp = NULL; struct t4_cqe *rd_cqe; int ret; ret = t4_next_cqe(&chp->cq, &rd_cqe); if (ret) return ret; qhp = get_qhp(chp->rhp, CQE_QPID(rd_cqe)); if (qhp) { spin_lock(&qhp->lock); srq = qhp->srq; if (srq) spin_lock(&srq->lock); ret = __c4iw_poll_cq_one(chp, qhp, wc, srq); spin_unlock(&qhp->lock); if (srq) spin_unlock(&srq->lock); } else { ret = __c4iw_poll_cq_one(chp, NULL, wc, NULL); } return ret; }
static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp, struct c4iw_qp *qhp, struct t4_cqe *err_cqe, enum ib_event_type ib_event) { struct ib_event event; struct c4iw_qp_attributes attrs; unsigned long flag; if ((qhp->attr.state == C4IW_QP_STATE_ERROR) || (qhp->attr.state == C4IW_QP_STATE_TERMINATE)) { pr_err("%s AE after RTS - qpid 0x%x opcode %d status 0x%x "\ "type %d wrid.hi 0x%x wrid.lo 0x%x\n", __func__, CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); return; } printk(KERN_ERR MOD "AE qpid 0x%x opcode %d status 0x%x " "type %d wrid.hi 0x%x wrid.lo 0x%x\n", CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); if (qhp->attr.state == C4IW_QP_STATE_RTS) { attrs.next_state = C4IW_QP_STATE_TERMINATE; c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 0); } event.event = ib_event; event.device = chp->ibcq.device; if (ib_event == IB_EVENT_CQ_ERR) event.element.cq = &chp->ibcq; else event.element.qp = &qhp->ibqp; if (qhp->ibqp.event_handler) (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context); spin_lock_irqsave(&chp->comp_handler_lock, flag); (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); spin_unlock_irqrestore(&chp->comp_handler_lock, flag); }
static void create_read_req_cqe(struct t4_wq *wq, struct t4_cqe *hw_cqe, struct t4_cqe *read_cqe) { read_cqe->u.scqe.cidx = wq->sq.oldest_read->idx; read_cqe->len = cpu_to_be32(wq->sq.oldest_read->read_len); read_cqe->header = htonl(V_CQE_QPID(CQE_QPID(hw_cqe)) | V_CQE_SWCQE(SW_CQE(hw_cqe)) | V_CQE_OPCODE(FW_RI_READ_REQ) | V_CQE_TYPE(1)); read_cqe->bits_type_ts = hw_cqe->bits_type_ts; }
static void post_qp_event(struct iwch_dev *rnicp, struct iwch_cq *chp, struct respQ_msg_t *rsp_msg, enum ib_event_type ib_event, int send_term) { struct ib_event event; struct iwch_qp_attributes attrs; struct iwch_qp *qhp; spin_lock(&rnicp->lock); qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe)); if (!qhp) { printk(KERN_ERR "%s unaffiliated error 0x%x qpid 0x%x\n", __func__, CQE_STATUS(rsp_msg->cqe), CQE_QPID(rsp_msg->cqe)); spin_unlock(&rnicp->lock); return; } if ((qhp->attr.state == IWCH_QP_STATE_ERROR) || (qhp->attr.state == IWCH_QP_STATE_TERMINATE)) { PDBG("%s AE received after RTS - " "qp state %d qpid 0x%x status 0x%x\n", __func__, qhp->attr.state, qhp->wq.qpid, CQE_STATUS(rsp_msg->cqe)); spin_unlock(&rnicp->lock); return; } printk(KERN_ERR "%s - AE qpid 0x%x opcode %d status 0x%x " "type %d wrid.hi 0x%x wrid.lo 0x%x \n", __func__, CQE_QPID(rsp_msg->cqe), CQE_OPCODE(rsp_msg->cqe), CQE_STATUS(rsp_msg->cqe), CQE_TYPE(rsp_msg->cqe), CQE_WRID_HI(rsp_msg->cqe), CQE_WRID_LOW(rsp_msg->cqe)); atomic_inc(&qhp->refcnt); spin_unlock(&rnicp->lock); <<<<<<< HEAD
void c4iw_count_scqes(struct t4_cq *cq, struct t4_wq *wq, int *count) { struct t4_cqe *cqe; u32 ptr; *count = 0; ptr = cq->sw_cidx; while (ptr != cq->sw_pidx) { cqe = &cq->sw_queue[ptr]; if ((SQ_TYPE(cqe) || ((CQE_OPCODE(cqe) == FW_RI_READ_RESP) && wq->sq.oldest_read)) && (CQE_QPID(cqe) == wq->sq.qid)) (*count)++; if (++ptr == cq->size) ptr = 0; } PDBG("%s cq %p count %d\n", __func__, cq, *count); }
void c4iw_count_rcqes(struct t4_cq *cq, struct t4_wq *wq, int *count) { struct t4_cqe *cqe; u32 ptr; *count = 0; PDBG("%s count zero %d\n", __func__, *count); ptr = cq->sw_cidx; while (ptr != cq->sw_pidx) { cqe = &cq->sw_queue[ptr]; if (RQ_TYPE(cqe) && (CQE_OPCODE(cqe) != FW_RI_READ_RESP) && (CQE_QPID(cqe) == wq->rq.qid) && cqe_completes_wr(cqe, wq)) (*count)++; if (++ptr == cq->size) ptr = 0; } PDBG("%s cq %p count %d\n", __func__, cq, *count); }
static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp, struct c4iw_qp *qhp, struct t4_cqe *err_cqe, enum ib_event_type ib_event) { struct ib_event event; struct c4iw_qp_attributes attrs; if ((qhp->attr.state == C4IW_QP_STATE_ERROR) || (qhp->attr.state == C4IW_QP_STATE_TERMINATE)) { PDBG("%s AE received after RTS - " "qp state %d qpid 0x%x status 0x%x\n", __func__, qhp->attr.state, qhp->wq.sq.qid, CQE_STATUS(err_cqe)); return; } printk(KERN_ERR MOD "AE qpid 0x%x opcode %d status 0x%x " "type %d wrid.hi 0x%x wrid.lo 0x%x\n", CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); if (qhp->attr.state == C4IW_QP_STATE_RTS) { attrs.next_state = C4IW_QP_STATE_TERMINATE; c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE, &attrs, 1); } event.event = ib_event; event.device = chp->ibcq.device; if (ib_event == IB_EVENT_CQ_ERR) event.element.cq = &chp->ibcq; else event.element.qp = &qhp->ibqp; if (qhp->ibqp.event_handler) (*qhp->ibqp.event_handler)(&event, qhp->ibqp.qp_context); (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); }
/* * Get one cq entry from c4iw and map it to openib. * * Returns: * 0 cqe returned * -ENODATA EMPTY; * -EAGAIN caller must try again * any other -errno fatal error */ static int c4iw_poll_cq_one(struct c4iw_cq *chp, struct ib_wc *wc) { struct c4iw_qp *qhp = NULL; struct t4_cqe cqe = {0, 0}, *rd_cqe; struct t4_wq *wq; u32 credit = 0; u8 cqe_flushed; u64 cookie = 0; int ret; ret = t4_next_cqe(&chp->cq, &rd_cqe); if (ret) return ret; qhp = get_qhp(chp->rhp, CQE_QPID(rd_cqe)); if (!qhp) wq = NULL; else { spin_lock(&qhp->lock); wq = &(qhp->wq); } ret = poll_cq(wq, &(chp->cq), &cqe, &cqe_flushed, &cookie, &credit); if (ret) goto out; wc->wr_id = cookie; wc->qp = &qhp->ibqp; wc->vendor_err = CQE_STATUS(&cqe); wc->wc_flags = 0; PDBG("%s qpid 0x%x type %d opcode %d status 0x%x len %u wrid hi 0x%x " "lo 0x%x cookie 0x%llx\n", __func__, CQE_QPID(&cqe), CQE_TYPE(&cqe), CQE_OPCODE(&cqe), CQE_STATUS(&cqe), CQE_LEN(&cqe), CQE_WRID_HI(&cqe), CQE_WRID_LOW(&cqe), (unsigned long long)cookie); if (CQE_TYPE(&cqe) == 0) { if (!CQE_STATUS(&cqe)) wc->byte_len = CQE_LEN(&cqe); else wc->byte_len = 0; wc->opcode = IB_WC_RECV; if (CQE_OPCODE(&cqe) == FW_RI_SEND_WITH_INV || CQE_OPCODE(&cqe) == FW_RI_SEND_WITH_SE_INV) { wc->ex.invalidate_rkey = CQE_WRID_STAG(&cqe); wc->wc_flags |= IB_WC_WITH_INVALIDATE; } } else { switch (CQE_OPCODE(&cqe)) { case FW_RI_RDMA_WRITE: wc->opcode = IB_WC_RDMA_WRITE; break; case FW_RI_READ_REQ: wc->opcode = IB_WC_RDMA_READ; wc->byte_len = CQE_LEN(&cqe); break; case FW_RI_SEND_WITH_INV: case FW_RI_SEND_WITH_SE_INV: wc->opcode = IB_WC_SEND; wc->wc_flags |= IB_WC_WITH_INVALIDATE; break; case FW_RI_SEND: case FW_RI_SEND_WITH_SE: wc->opcode = IB_WC_SEND; break; case FW_RI_BIND_MW: wc->opcode = IB_WC_BIND_MW; break; case FW_RI_LOCAL_INV: wc->opcode = IB_WC_LOCAL_INV; break; case FW_RI_FAST_REGISTER: wc->opcode = IB_WC_FAST_REG_MR; break; default: printk(KERN_ERR MOD "Unexpected opcode %d " "in the CQE received for QPID=0x%0x\n", CQE_OPCODE(&cqe), CQE_QPID(&cqe)); ret = -EINVAL; goto out; } } if (cqe_flushed) wc->status = IB_WC_WR_FLUSH_ERR; else { switch (CQE_STATUS(&cqe)) { case T4_ERR_SUCCESS: wc->status = IB_WC_SUCCESS; break; case T4_ERR_STAG: wc->status = IB_WC_LOC_ACCESS_ERR; break; case T4_ERR_PDID: wc->status = IB_WC_LOC_PROT_ERR; break; case T4_ERR_QPID: case T4_ERR_ACCESS: wc->status = IB_WC_LOC_ACCESS_ERR; break; case T4_ERR_WRAP: wc->status = IB_WC_GENERAL_ERR; break; case T4_ERR_BOUND: wc->status = IB_WC_LOC_LEN_ERR; break; case T4_ERR_INVALIDATE_SHARED_MR: case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND: wc->status = IB_WC_MW_BIND_ERR; break; case T4_ERR_CRC: case T4_ERR_MARKER: case T4_ERR_PDU_LEN_ERR: case T4_ERR_OUT_OF_RQE: case T4_ERR_DDP_VERSION: case T4_ERR_RDMA_VERSION: case T4_ERR_DDP_QUEUE_NUM: case T4_ERR_MSN: case T4_ERR_TBIT: case T4_ERR_MO: case T4_ERR_MSN_RANGE: case T4_ERR_IRD_OVERFLOW: case T4_ERR_OPCODE: case T4_ERR_INTERNAL_ERR: wc->status = IB_WC_FATAL_ERR; break; case T4_ERR_SWFLUSH: wc->status = IB_WC_WR_FLUSH_ERR; break; default: printk(KERN_ERR MOD "Unexpected cqe_status 0x%x for QPID=0x%0x\n", CQE_STATUS(&cqe), CQE_QPID(&cqe)); ret = -EINVAL; } } out: if (wq) spin_unlock(&qhp->lock); return ret; }
/* * poll_cq * * Caller must: * check the validity of the first CQE, * supply the wq assicated with the qpid. * * credit: cq credit to return to sge. * cqe_flushed: 1 iff the CQE is flushed. * cqe: copy of the polled CQE. * * return value: * 0 CQE returned ok. * -EAGAIN CQE skipped, try again. * -EOVERFLOW CQ overflow detected. */ static int poll_cq(struct t4_wq *wq, struct t4_cq *cq, struct t4_cqe *cqe, u8 *cqe_flushed, u64 *cookie, u32 *credit) { int ret = 0; struct t4_cqe *hw_cqe, read_cqe; *cqe_flushed = 0; *credit = 0; ret = t4_next_cqe(cq, &hw_cqe); if (ret) return ret; PDBG("%s CQE OVF %u qpid 0x%0x genbit %u type %u status 0x%0x" " opcode 0x%0x len 0x%0x wrid_hi_stag 0x%x wrid_low_msn 0x%x\n", __func__, CQE_OVFBIT(hw_cqe), CQE_QPID(hw_cqe), CQE_GENBIT(hw_cqe), CQE_TYPE(hw_cqe), CQE_STATUS(hw_cqe), CQE_OPCODE(hw_cqe), CQE_LEN(hw_cqe), CQE_WRID_HI(hw_cqe), CQE_WRID_LOW(hw_cqe)); /* * skip cqe's not affiliated with a QP. */ if (wq == NULL) { ret = -EAGAIN; goto skip_cqe; } /* * Gotta tweak READ completions: * 1) the cqe doesn't contain the sq_wptr from the wr. * 2) opcode not reflected from the wr. * 3) read_len not reflected from the wr. * 4) cq_type is RQ_TYPE not SQ_TYPE. */ if (RQ_TYPE(hw_cqe) && (CQE_OPCODE(hw_cqe) == FW_RI_READ_RESP)) { /* * If this is an unsolicited read response, then the read * was generated by the kernel driver as part of peer-2-peer * connection setup. So ignore the completion. */ if (!wq->sq.oldest_read) { if (CQE_STATUS(hw_cqe)) t4_set_wq_in_error(wq); ret = -EAGAIN; goto skip_cqe; } /* * Don't write to the HWCQ, so create a new read req CQE * in local memory. */ create_read_req_cqe(wq, hw_cqe, &read_cqe); hw_cqe = &read_cqe; advance_oldest_read(wq); } if (CQE_STATUS(hw_cqe) || t4_wq_in_error(wq)) { *cqe_flushed = t4_wq_in_error(wq); t4_set_wq_in_error(wq); goto proc_cqe; } if (CQE_OPCODE(hw_cqe) == FW_RI_TERMINATE) { ret = -EAGAIN; goto skip_cqe; } /* * RECV completion. */ if (RQ_TYPE(hw_cqe)) { /* * HW only validates 4 bits of MSN. So we must validate that * the MSN in the SEND is the next expected MSN. If its not, * then we complete this with T4_ERR_MSN and mark the wq in * error. */ if (t4_rq_empty(wq)) { t4_set_wq_in_error(wq); ret = -EAGAIN; goto skip_cqe; } if (unlikely((CQE_WRID_MSN(hw_cqe) != (wq->rq.msn)))) { t4_set_wq_in_error(wq); hw_cqe->header |= htonl(V_CQE_STATUS(T4_ERR_MSN)); goto proc_cqe; } goto proc_cqe; } /* * If we get here its a send completion. * * Handle out of order completion. These get stuffed * in the SW SQ. Then the SW SQ is walked to move any * now in-order completions into the SW CQ. This handles * 2 cases: * 1) reaping unsignaled WRs when the first subsequent * signaled WR is completed. * 2) out of order read completions. */ if (!SW_CQE(hw_cqe) && (CQE_WRID_SQ_IDX(hw_cqe) != wq->sq.cidx)) { struct t4_swsqe *swsqe; PDBG("%s out of order completion going in sw_sq at idx %u\n", __func__, CQE_WRID_SQ_IDX(hw_cqe)); swsqe = &wq->sq.sw_sq[CQE_WRID_SQ_IDX(hw_cqe)]; swsqe->cqe = *hw_cqe; swsqe->complete = 1; ret = -EAGAIN; goto flush_wq; } proc_cqe: *cqe = *hw_cqe; /* * Reap the associated WR(s) that are freed up with this * completion. */ if (SQ_TYPE(hw_cqe)) { wq->sq.cidx = CQE_WRID_SQ_IDX(hw_cqe); PDBG("%s completing sq idx %u\n", __func__, wq->sq.cidx); *cookie = wq->sq.sw_sq[wq->sq.cidx].wr_id; t4_sq_consume(wq); } else { PDBG("%s completing rq idx %u\n", __func__, wq->rq.cidx); *cookie = wq->rq.sw_rq[wq->rq.cidx].wr_id; BUG_ON(t4_rq_empty(wq)); t4_rq_consume(wq); } flush_wq: /* * Flush any completed cqes that are now in-order. */ flush_completed_wrs(wq, cq); skip_cqe: if (SW_CQE(hw_cqe)) { PDBG("%s cq %p cqid 0x%x skip sw cqe cidx %u\n", __func__, cq, cq->cqid, cq->sw_cidx); t4_swcq_consume(cq); } else { PDBG("%s cq %p cqid 0x%x skip hw cqe cidx %u\n", __func__, cq, cq->cqid, cq->cidx); t4_hwcq_consume(cq); } return ret; }
void iwch_ev_dispatch(struct cxio_rdev *rdev_p, struct sk_buff *skb) { struct iwch_dev *rnicp; struct respQ_msg_t *rsp_msg = (struct respQ_msg_t *) skb->data; struct iwch_cq *chp; struct iwch_qp *qhp; u32 cqid = RSPQ_CQID(rsp_msg); rnicp = (struct iwch_dev *) rdev_p->ulp; spin_lock(&rnicp->lock); chp = get_chp(rnicp, cqid); qhp = get_qhp(rnicp, CQE_QPID(rsp_msg->cqe)); if (!chp || !qhp) { printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d " "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x \n", cqid, CQE_QPID(rsp_msg->cqe), CQE_OPCODE(rsp_msg->cqe), CQE_STATUS(rsp_msg->cqe), CQE_TYPE(rsp_msg->cqe), CQE_WRID_HI(rsp_msg->cqe), CQE_WRID_LOW(rsp_msg->cqe)); spin_unlock(&rnicp->lock); goto out; } iwch_qp_add_ref(&qhp->ibqp); atomic_inc(&chp->refcnt); spin_unlock(&rnicp->lock); /* * 1) completion of our sending a TERMINATE. * 2) incoming TERMINATE message. */ if ((CQE_OPCODE(rsp_msg->cqe) == T3_TERMINATE) && (CQE_STATUS(rsp_msg->cqe) == 0)) { if (SQ_TYPE(rsp_msg->cqe)) { PDBG("%s QPID 0x%x ep %p disconnecting\n", __func__, qhp->wq.qpid, qhp->ep); iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC); } else { PDBG("%s post REQ_ERR AE QPID 0x%x\n", __func__, qhp->wq.qpid); post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 0); iwch_ep_disconnect(qhp->ep, 0, GFP_ATOMIC); } goto done; } /* Bad incoming Read request */ if (SQ_TYPE(rsp_msg->cqe) && (CQE_OPCODE(rsp_msg->cqe) == T3_READ_RESP)) { post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1); goto done; } /* Bad incoming write */ if (RQ_TYPE(rsp_msg->cqe) && (CQE_OPCODE(rsp_msg->cqe) == T3_RDMA_WRITE)) { post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_REQ_ERR, 1); goto done; } switch (CQE_STATUS(rsp_msg->cqe)) { /* Completion Events */ case TPT_ERR_SUCCESS: /* * Confirm the destination entry if this is a RECV completion. */ if (qhp->ep && SQ_TYPE(rsp_msg->cqe)) dst_confirm(qhp->ep->dst); (*chp->ibcq.comp_handler)(&chp->ibcq, chp->ibcq.cq_context); break; case TPT_ERR_STAG: case TPT_ERR_PDID: case TPT_ERR_QPID: case TPT_ERR_ACCESS: case TPT_ERR_WRAP: case TPT_ERR_BOUND: case TPT_ERR_INVALIDATE_SHARED_MR: case TPT_ERR_INVALIDATE_MR_WITH_MW_BOUND: post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_ACCESS_ERR, 1); break; /* Device Fatal Errors */ case TPT_ERR_ECC: case TPT_ERR_ECC_PSTAG: case TPT_ERR_INTERNAL_ERR: post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_DEVICE_FATAL, 1); break; /* QP Fatal Errors */ case TPT_ERR_OUT_OF_RQE: case TPT_ERR_PBL_ADDR_BOUND: case TPT_ERR_CRC: case TPT_ERR_MARKER: case TPT_ERR_PDU_LEN_ERR: case TPT_ERR_DDP_VERSION: case TPT_ERR_RDMA_VERSION: case TPT_ERR_OPCODE: case TPT_ERR_DDP_QUEUE_NUM: case TPT_ERR_MSN: case TPT_ERR_TBIT: case TPT_ERR_MO: case TPT_ERR_MSN_GAP: case TPT_ERR_MSN_RANGE: case TPT_ERR_RQE_ADDR_BOUND: case TPT_ERR_IRD_OVERFLOW: post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1); break; default: printk(KERN_ERR MOD "Unknown T3 status 0x%x QPID 0x%x\n", CQE_STATUS(rsp_msg->cqe), qhp->wq.qpid); post_qp_event(rnicp, chp, rsp_msg, IB_EVENT_QP_FATAL, 1); break; } done: if (atomic_dec_and_test(&chp->refcnt)) wake_up(&chp->wait); iwch_qp_rem_ref(&qhp->ibqp); out: dev_kfree_skb_irq(skb); }
void c4iw_ev_dispatch(struct c4iw_dev *dev, struct t4_cqe *err_cqe) { struct c4iw_cq *chp; struct c4iw_qp *qhp; u32 cqid; spin_lock(&dev->lock); qhp = get_qhp(dev, CQE_QPID(err_cqe)); if (!qhp) { printk(KERN_ERR MOD "BAD AE qpid 0x%x opcode %d " "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n", CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); spin_unlock(&dev->lock); goto out; } if (SQ_TYPE(err_cqe)) cqid = qhp->attr.scq; else cqid = qhp->attr.rcq; chp = get_chp(dev, cqid); if (!chp) { printk(KERN_ERR MOD "BAD AE cqid 0x%x qpid 0x%x opcode %d " "status 0x%x type %d wrid.hi 0x%x wrid.lo 0x%x\n", cqid, CQE_QPID(err_cqe), CQE_OPCODE(err_cqe), CQE_STATUS(err_cqe), CQE_TYPE(err_cqe), CQE_WRID_HI(err_cqe), CQE_WRID_LOW(err_cqe)); spin_unlock(&dev->lock); goto out; } c4iw_qp_add_ref(&qhp->ibqp); atomic_inc(&chp->refcnt); spin_unlock(&dev->lock); /* Bad incoming write */ if (RQ_TYPE(err_cqe) && (CQE_OPCODE(err_cqe) == FW_RI_RDMA_WRITE)) { post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_REQ_ERR); goto done; } switch (CQE_STATUS(err_cqe)) { /* Completion Events */ case T4_ERR_SUCCESS: printk(KERN_ERR MOD "AE with status 0!\n"); break; case T4_ERR_STAG: case T4_ERR_PDID: case T4_ERR_QPID: case T4_ERR_ACCESS: case T4_ERR_WRAP: case T4_ERR_BOUND: case T4_ERR_INVALIDATE_SHARED_MR: case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND: post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_ACCESS_ERR); break; /* Device Fatal Errors */ case T4_ERR_ECC: case T4_ERR_ECC_PSTAG: case T4_ERR_INTERNAL_ERR: post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_DEVICE_FATAL); break; /* QP Fatal Errors */ case T4_ERR_OUT_OF_RQE: case T4_ERR_PBL_ADDR_BOUND: case T4_ERR_CRC: case T4_ERR_MARKER: case T4_ERR_PDU_LEN_ERR: case T4_ERR_DDP_VERSION: case T4_ERR_RDMA_VERSION: case T4_ERR_OPCODE: case T4_ERR_DDP_QUEUE_NUM: case T4_ERR_MSN: case T4_ERR_TBIT: case T4_ERR_MO: case T4_ERR_MSN_GAP: case T4_ERR_MSN_RANGE: case T4_ERR_RQE_ADDR_BOUND: case T4_ERR_IRD_OVERFLOW: post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL); break; default: printk(KERN_ERR MOD "Unknown T4 status 0x%x QPID 0x%x\n", CQE_STATUS(err_cqe), qhp->wq.sq.qid); post_qp_event(dev, chp, qhp, err_cqe, IB_EVENT_QP_FATAL); break; } done: if (atomic_dec_and_test(&chp->refcnt)) wake_up(&chp->wait); c4iw_qp_rem_ref(&qhp->ibqp); out: return; }
/* * Get one cq entry from cxio and map it to openib. * * Returns: * 0 cqe returned * -ENOBUFS EMPTY; * -EAGAIN caller must try again * any other neg errno fatal error */ static int iwch_poll_cq_one(struct iwch_dev *rhp, struct iwch_cq *chp, struct ib_wc *wc) { struct iwch_qp *qhp = NULL; struct t3_cqe cqe, *rd_cqe; struct t3_wq *wq; u32 credit = 0; u8 cqe_flushed; u64 cookie; int ret = 1; rd_cqe = cxio_next_cqe(&chp->cq); if (!rd_cqe) return 0; qhp = get_qhp(rhp, CQE_QPID(*rd_cqe)); if (!qhp) wq = NULL; else { mtx_lock(&qhp->lock); wq = &(qhp->wq); } ret = cxio_poll_cq(wq, &(chp->cq), &cqe, &cqe_flushed, &cookie, &credit); if (t3a_device(chp->rhp) && credit) { CTR3(KTR_IW_CXGB, "%s updating %d cq credits on id %d", __FUNCTION__, credit, chp->cq.cqid); cxio_hal_cq_op(&rhp->rdev, &chp->cq, CQ_CREDIT_UPDATE, credit); } if (ret) { ret = -EAGAIN; goto out; } ret = 1; wc->wr_id = cookie; wc->qp = &qhp->ibqp; wc->vendor_err = CQE_STATUS(cqe); CTR4(KTR_IW_CXGB, "iwch_poll_cq_one qpid 0x%x type %d opcode %d status 0x%x", CQE_QPID(cqe), CQE_TYPE(cqe), CQE_OPCODE(cqe), CQE_STATUS(cqe)); CTR3(KTR_IW_CXGB, "wrid hi 0x%x lo 0x%x cookie 0x%llx", CQE_WRID_HI(cqe), CQE_WRID_LOW(cqe), (unsigned long long) cookie); if (CQE_TYPE(cqe) == 0) { if (!CQE_STATUS(cqe)) wc->byte_len = CQE_LEN(cqe); else wc->byte_len = 0; wc->opcode = IB_WC_RECV; } else { switch (CQE_OPCODE(cqe)) { case T3_RDMA_WRITE: wc->opcode = IB_WC_RDMA_WRITE; break; case T3_READ_REQ: wc->opcode = IB_WC_RDMA_READ; wc->byte_len = CQE_LEN(cqe); break; case T3_SEND: case T3_SEND_WITH_SE: wc->opcode = IB_WC_SEND; break; case T3_BIND_MW: wc->opcode = IB_WC_BIND_MW; break; /* these aren't supported yet */ case T3_SEND_WITH_INV: case T3_SEND_WITH_SE_INV: case T3_LOCAL_INV: case T3_FAST_REGISTER: default: log(LOG_ERR, "Unexpected opcode %d " "in the CQE received for QPID=0x%0x\n", CQE_OPCODE(cqe), CQE_QPID(cqe)); ret = -EINVAL; goto out; } } if (cqe_flushed) wc->status = IB_WC_WR_FLUSH_ERR; else { switch (CQE_STATUS(cqe)) { case TPT_ERR_SUCCESS: wc->status = IB_WC_SUCCESS; break; case TPT_ERR_STAG: wc->status = IB_WC_LOC_ACCESS_ERR; break; case TPT_ERR_PDID: wc->status = IB_WC_LOC_PROT_ERR; break; case TPT_ERR_QPID: case TPT_ERR_ACCESS: wc->status = IB_WC_LOC_ACCESS_ERR; break; case TPT_ERR_WRAP: wc->status = IB_WC_GENERAL_ERR; break; case TPT_ERR_BOUND: wc->status = IB_WC_LOC_LEN_ERR; break; case TPT_ERR_INVALIDATE_SHARED_MR: case TPT_ERR_INVALIDATE_MR_WITH_MW_BOUND: wc->status = IB_WC_MW_BIND_ERR; break; case TPT_ERR_CRC: case TPT_ERR_MARKER: case TPT_ERR_PDU_LEN_ERR: case TPT_ERR_OUT_OF_RQE: case TPT_ERR_DDP_VERSION: case TPT_ERR_RDMA_VERSION: case TPT_ERR_DDP_QUEUE_NUM: case TPT_ERR_MSN: case TPT_ERR_TBIT: case TPT_ERR_MO: case TPT_ERR_MSN_RANGE: case TPT_ERR_IRD_OVERFLOW: case TPT_ERR_OPCODE: wc->status = IB_WC_FATAL_ERR; break; case TPT_ERR_SWFLUSH: wc->status = IB_WC_WR_FLUSH_ERR; break; default: log(LOG_ERR, "Unexpected cqe_status 0x%x for " "QPID=0x%0x\n", CQE_STATUS(cqe), CQE_QPID(cqe)); ret = -EINVAL; } } out: if (wq) mtx_unlock(&qhp->lock); return ret; }
static int poll_cq(struct t4_wq *wq, struct t4_cq *cq, struct t4_cqe *cqe, u8 *cqe_flushed, u64 *cookie, u32 *credit) { int ret = 0; struct t4_cqe *hw_cqe, read_cqe; *cqe_flushed = 0; *credit = 0; ret = t4_next_cqe(cq, &hw_cqe); if (ret) return ret; PDBG("%s CQE OVF %u qpid 0x%0x genbit %u type %u status 0x%0x" " opcode 0x%0x len 0x%0x wrid_hi_stag 0x%x wrid_low_msn 0x%x\n", __func__, CQE_OVFBIT(hw_cqe), CQE_QPID(hw_cqe), CQE_GENBIT(hw_cqe), CQE_TYPE(hw_cqe), CQE_STATUS(hw_cqe), CQE_OPCODE(hw_cqe), CQE_LEN(hw_cqe), CQE_WRID_HI(hw_cqe), CQE_WRID_LOW(hw_cqe)); /* */ if (wq == NULL) { ret = -EAGAIN; goto skip_cqe; } /* */ if (RQ_TYPE(hw_cqe) && (CQE_OPCODE(hw_cqe) == FW_RI_READ_RESP)) { /* */ if (!wq->sq.oldest_read) { if (CQE_STATUS(hw_cqe)) t4_set_wq_in_error(wq); ret = -EAGAIN; goto skip_cqe; } /* */ create_read_req_cqe(wq, hw_cqe, &read_cqe); hw_cqe = &read_cqe; advance_oldest_read(wq); } if (CQE_STATUS(hw_cqe) || t4_wq_in_error(wq)) { *cqe_flushed = t4_wq_in_error(wq); t4_set_wq_in_error(wq); goto proc_cqe; } if (CQE_OPCODE(hw_cqe) == FW_RI_TERMINATE) { ret = -EAGAIN; goto skip_cqe; } /* */ if (RQ_TYPE(hw_cqe)) { /* */ if (t4_rq_empty(wq)) { t4_set_wq_in_error(wq); ret = -EAGAIN; goto skip_cqe; } if (unlikely((CQE_WRID_MSN(hw_cqe) != (wq->rq.msn)))) { t4_set_wq_in_error(wq); hw_cqe->header |= htonl(V_CQE_STATUS(T4_ERR_MSN)); goto proc_cqe; } goto proc_cqe; } /* */ if (!SW_CQE(hw_cqe) && (CQE_WRID_SQ_IDX(hw_cqe) != wq->sq.cidx)) { struct t4_swsqe *swsqe; PDBG("%s out of order completion going in sw_sq at idx %u\n", __func__, CQE_WRID_SQ_IDX(hw_cqe)); swsqe = &wq->sq.sw_sq[CQE_WRID_SQ_IDX(hw_cqe)]; swsqe->cqe = *hw_cqe; swsqe->complete = 1; ret = -EAGAIN; goto flush_wq; } proc_cqe: *cqe = *hw_cqe; /* */ if (SQ_TYPE(hw_cqe)) { wq->sq.cidx = CQE_WRID_SQ_IDX(hw_cqe); PDBG("%s completing sq idx %u\n", __func__, wq->sq.cidx); *cookie = wq->sq.sw_sq[wq->sq.cidx].wr_id; t4_sq_consume(wq); } else { PDBG("%s completing rq idx %u\n", __func__, wq->rq.cidx); *cookie = wq->rq.sw_rq[wq->rq.cidx].wr_id; BUG_ON(t4_rq_empty(wq)); t4_rq_consume(wq); } flush_wq: /* */ flush_completed_wrs(wq, cq); skip_cqe: if (SW_CQE(hw_cqe)) { PDBG("%s cq %p cqid 0x%x skip sw cqe cidx %u\n", __func__, cq, cq->cqid, cq->sw_cidx); t4_swcq_consume(cq); } else { PDBG("%s cq %p cqid 0x%x skip hw cqe cidx %u\n", __func__, cq, cq->cqid, cq->cidx); t4_hwcq_consume(cq); } return ret; }
static int __c4iw_poll_cq_one(struct c4iw_cq *chp, struct c4iw_qp *qhp, struct ib_wc *wc, struct c4iw_srq *srq) { struct t4_cqe uninitialized_var(cqe); struct t4_wq *wq = qhp ? &qhp->wq : NULL; u32 credit = 0; u8 cqe_flushed; u64 cookie = 0; int ret; ret = poll_cq(wq, &(chp->cq), &cqe, &cqe_flushed, &cookie, &credit, srq ? &srq->wq : NULL); if (ret) goto out; wc->wr_id = cookie; wc->qp = qhp ? &qhp->ibqp : NULL; wc->vendor_err = CQE_STATUS(&cqe); wc->wc_flags = 0; /* * Simulate a SRQ_LIMIT_REACHED HW notification if required. */ if (srq && !(srq->flags & T4_SRQ_LIMIT_SUPPORT) && srq->armed && srq->wq.in_use < srq->srq_limit) c4iw_dispatch_srq_limit_reached_event(srq); pr_debug("qpid 0x%x type %d opcode %d status 0x%x len %u wrid hi 0x%x lo 0x%x cookie 0x%llx\n", CQE_QPID(&cqe), CQE_TYPE(&cqe), CQE_OPCODE(&cqe), CQE_STATUS(&cqe), CQE_LEN(&cqe), CQE_WRID_HI(&cqe), CQE_WRID_LOW(&cqe), (unsigned long long)cookie); if (CQE_TYPE(&cqe) == 0) { if (!CQE_STATUS(&cqe)) wc->byte_len = CQE_LEN(&cqe); else wc->byte_len = 0; switch (CQE_OPCODE(&cqe)) { case FW_RI_SEND: wc->opcode = IB_WC_RECV; break; case FW_RI_SEND_WITH_INV: case FW_RI_SEND_WITH_SE_INV: wc->opcode = IB_WC_RECV; wc->ex.invalidate_rkey = CQE_WRID_STAG(&cqe); wc->wc_flags |= IB_WC_WITH_INVALIDATE; c4iw_invalidate_mr(qhp->rhp, wc->ex.invalidate_rkey); break; case FW_RI_WRITE_IMMEDIATE: wc->opcode = IB_WC_RECV_RDMA_WITH_IMM; wc->ex.imm_data = CQE_IMM_DATA(&cqe); wc->wc_flags |= IB_WC_WITH_IMM; break; default: pr_err("Unexpected opcode %d in the CQE received for QPID=0x%0x\n", CQE_OPCODE(&cqe), CQE_QPID(&cqe)); ret = -EINVAL; goto out; } } else { switch (CQE_OPCODE(&cqe)) { case FW_RI_WRITE_IMMEDIATE: case FW_RI_RDMA_WRITE: wc->opcode = IB_WC_RDMA_WRITE; break; case FW_RI_READ_REQ: wc->opcode = IB_WC_RDMA_READ; wc->byte_len = CQE_LEN(&cqe); break; case FW_RI_SEND_WITH_INV: case FW_RI_SEND_WITH_SE_INV: wc->opcode = IB_WC_SEND; wc->wc_flags |= IB_WC_WITH_INVALIDATE; break; case FW_RI_SEND: case FW_RI_SEND_WITH_SE: wc->opcode = IB_WC_SEND; break; case FW_RI_LOCAL_INV: wc->opcode = IB_WC_LOCAL_INV; break; case FW_RI_FAST_REGISTER: wc->opcode = IB_WC_REG_MR; /* Invalidate the MR if the fastreg failed */ if (CQE_STATUS(&cqe) != T4_ERR_SUCCESS) c4iw_invalidate_mr(qhp->rhp, CQE_WRID_FR_STAG(&cqe)); break; default: pr_err("Unexpected opcode %d in the CQE received for QPID=0x%0x\n", CQE_OPCODE(&cqe), CQE_QPID(&cqe)); ret = -EINVAL; goto out; } } if (cqe_flushed) wc->status = IB_WC_WR_FLUSH_ERR; else { switch (CQE_STATUS(&cqe)) { case T4_ERR_SUCCESS: wc->status = IB_WC_SUCCESS; break; case T4_ERR_STAG: wc->status = IB_WC_LOC_ACCESS_ERR; break; case T4_ERR_PDID: wc->status = IB_WC_LOC_PROT_ERR; break; case T4_ERR_QPID: case T4_ERR_ACCESS: wc->status = IB_WC_LOC_ACCESS_ERR; break; case T4_ERR_WRAP: wc->status = IB_WC_GENERAL_ERR; break; case T4_ERR_BOUND: wc->status = IB_WC_LOC_LEN_ERR; break; case T4_ERR_INVALIDATE_SHARED_MR: case T4_ERR_INVALIDATE_MR_WITH_MW_BOUND: wc->status = IB_WC_MW_BIND_ERR; break; case T4_ERR_CRC: case T4_ERR_MARKER: case T4_ERR_PDU_LEN_ERR: case T4_ERR_OUT_OF_RQE: case T4_ERR_DDP_VERSION: case T4_ERR_RDMA_VERSION: case T4_ERR_DDP_QUEUE_NUM: case T4_ERR_MSN: case T4_ERR_TBIT: case T4_ERR_MO: case T4_ERR_MSN_RANGE: case T4_ERR_IRD_OVERFLOW: case T4_ERR_OPCODE: case T4_ERR_INTERNAL_ERR: wc->status = IB_WC_FATAL_ERR; break; case T4_ERR_SWFLUSH: wc->status = IB_WC_WR_FLUSH_ERR; break; default: pr_err("Unexpected cqe_status 0x%x for QPID=0x%0x\n", CQE_STATUS(&cqe), CQE_QPID(&cqe)); wc->status = IB_WC_FATAL_ERR; } } out: return ret; }
/* * poll_cq * * Caller must: * check the validity of the first CQE, * supply the wq assicated with the qpid. * * credit: cq credit to return to sge. * cqe_flushed: 1 iff the CQE is flushed. * cqe: copy of the polled CQE. * * return value: * 0 CQE returned ok. * -EAGAIN CQE skipped, try again. * -EOVERFLOW CQ overflow detected. */ static int poll_cq(struct t4_wq *wq, struct t4_cq *cq, struct t4_cqe *cqe, u8 *cqe_flushed, u64 *cookie, u32 *credit, struct t4_srq *srq) { int ret = 0; struct t4_cqe *hw_cqe, read_cqe; *cqe_flushed = 0; *credit = 0; ret = t4_next_cqe(cq, &hw_cqe); if (ret) return ret; pr_debug("CQE OVF %u qpid 0x%0x genbit %u type %u status 0x%0x opcode 0x%0x len 0x%0x wrid_hi_stag 0x%x wrid_low_msn 0x%x\n", CQE_OVFBIT(hw_cqe), CQE_QPID(hw_cqe), CQE_GENBIT(hw_cqe), CQE_TYPE(hw_cqe), CQE_STATUS(hw_cqe), CQE_OPCODE(hw_cqe), CQE_LEN(hw_cqe), CQE_WRID_HI(hw_cqe), CQE_WRID_LOW(hw_cqe)); /* * skip cqe's not affiliated with a QP. */ if (wq == NULL) { ret = -EAGAIN; goto skip_cqe; } /* * skip hw cqe's if the wq is flushed. */ if (wq->flushed && !SW_CQE(hw_cqe)) { ret = -EAGAIN; goto skip_cqe; } /* * skip TERMINATE cqes... */ if (CQE_OPCODE(hw_cqe) == FW_RI_TERMINATE) { ret = -EAGAIN; goto skip_cqe; } /* * Special cqe for drain WR completions... */ if (DRAIN_CQE(hw_cqe)) { *cookie = CQE_DRAIN_COOKIE(hw_cqe); *cqe = *hw_cqe; goto skip_cqe; } /* * Gotta tweak READ completions: * 1) the cqe doesn't contain the sq_wptr from the wr. * 2) opcode not reflected from the wr. * 3) read_len not reflected from the wr. * 4) cq_type is RQ_TYPE not SQ_TYPE. */ if (RQ_TYPE(hw_cqe) && (CQE_OPCODE(hw_cqe) == FW_RI_READ_RESP)) { /* If we have reached here because of async * event or other error, and have egress error * then drop */ if (CQE_TYPE(hw_cqe) == 1) { if (CQE_STATUS(hw_cqe)) t4_set_wq_in_error(wq, 0); ret = -EAGAIN; goto skip_cqe; } /* If this is an unsolicited read response, then the read * was generated by the kernel driver as part of peer-2-peer * connection setup. So ignore the completion. */ if (CQE_WRID_STAG(hw_cqe) == 1) { if (CQE_STATUS(hw_cqe)) t4_set_wq_in_error(wq, 0); ret = -EAGAIN; goto skip_cqe; } /* * Eat completions for unsignaled read WRs. */ if (!wq->sq.oldest_read->signaled) { advance_oldest_read(wq); ret = -EAGAIN; goto skip_cqe; } /* * Don't write to the HWCQ, so create a new read req CQE * in local memory. */ create_read_req_cqe(wq, hw_cqe, &read_cqe); hw_cqe = &read_cqe; advance_oldest_read(wq); } if (CQE_STATUS(hw_cqe) || t4_wq_in_error(wq)) { *cqe_flushed = (CQE_STATUS(hw_cqe) == T4_ERR_SWFLUSH); t4_set_wq_in_error(wq, 0); } /* * RECV completion. */ if (RQ_TYPE(hw_cqe)) { /* * HW only validates 4 bits of MSN. So we must validate that * the MSN in the SEND is the next expected MSN. If its not, * then we complete this with T4_ERR_MSN and mark the wq in * error. */ if (unlikely(!CQE_STATUS(hw_cqe) && CQE_WRID_MSN(hw_cqe) != wq->rq.msn)) { t4_set_wq_in_error(wq, 0); hw_cqe->header |= cpu_to_be32(CQE_STATUS_V(T4_ERR_MSN)); } goto proc_cqe; } /* * If we get here its a send completion. * * Handle out of order completion. These get stuffed * in the SW SQ. Then the SW SQ is walked to move any * now in-order completions into the SW CQ. This handles * 2 cases: * 1) reaping unsignaled WRs when the first subsequent * signaled WR is completed. * 2) out of order read completions. */ if (!SW_CQE(hw_cqe) && (CQE_WRID_SQ_IDX(hw_cqe) != wq->sq.cidx)) { struct t4_swsqe *swsqe; pr_debug("out of order completion going in sw_sq at idx %u\n", CQE_WRID_SQ_IDX(hw_cqe)); swsqe = &wq->sq.sw_sq[CQE_WRID_SQ_IDX(hw_cqe)]; swsqe->cqe = *hw_cqe; swsqe->complete = 1; ret = -EAGAIN; goto flush_wq; } proc_cqe: *cqe = *hw_cqe; /* * Reap the associated WR(s) that are freed up with this * completion. */ if (SQ_TYPE(hw_cqe)) { int idx = CQE_WRID_SQ_IDX(hw_cqe); /* * Account for any unsignaled completions completed by * this signaled completion. In this case, cidx points * to the first unsignaled one, and idx points to the * signaled one. So adjust in_use based on this delta. * if this is not completing any unsigned wrs, then the * delta will be 0. Handle wrapping also! */ if (idx < wq->sq.cidx) wq->sq.in_use -= wq->sq.size + idx - wq->sq.cidx; else wq->sq.in_use -= idx - wq->sq.cidx; wq->sq.cidx = (uint16_t)idx; pr_debug("completing sq idx %u\n", wq->sq.cidx); *cookie = wq->sq.sw_sq[wq->sq.cidx].wr_id; if (c4iw_wr_log) c4iw_log_wr_stats(wq, hw_cqe); t4_sq_consume(wq); } else { if (!srq) { pr_debug("completing rq idx %u\n", wq->rq.cidx); *cookie = wq->rq.sw_rq[wq->rq.cidx].wr_id; if (c4iw_wr_log) c4iw_log_wr_stats(wq, hw_cqe); t4_rq_consume(wq); } else { *cookie = reap_srq_cqe(hw_cqe, srq); } wq->rq.msn++; goto skip_cqe; } flush_wq: /* * Flush any completed cqes that are now in-order. */ flush_completed_wrs(wq, cq); skip_cqe: if (SW_CQE(hw_cqe)) { pr_debug("cq %p cqid 0x%x skip sw cqe cidx %u\n", cq, cq->cqid, cq->sw_cidx); t4_swcq_consume(cq); } else { pr_debug("cq %p cqid 0x%x skip hw cqe cidx %u\n", cq, cq->cqid, cq->cidx); t4_hwcq_consume(cq); } return ret; }
/* * Move all CQEs from the HWCQ into the SWCQ. * Deal with out-of-order and/or completions that complete * prior unsignalled WRs. */ void c4iw_flush_hw_cq(struct c4iw_cq *chp, struct c4iw_qp *flush_qhp) { struct t4_cqe *hw_cqe, *swcqe, read_cqe; struct c4iw_qp *qhp; struct t4_swsqe *swsqe; int ret; pr_debug("cqid 0x%x\n", chp->cq.cqid); ret = t4_next_hw_cqe(&chp->cq, &hw_cqe); /* * This logic is similar to poll_cq(), but not quite the same * unfortunately. Need to move pertinent HW CQEs to the SW CQ but * also do any translation magic that poll_cq() normally does. */ while (!ret) { qhp = get_qhp(chp->rhp, CQE_QPID(hw_cqe)); /* * drop CQEs with no associated QP */ if (qhp == NULL) goto next_cqe; if (flush_qhp != qhp) { spin_lock(&qhp->lock); if (qhp->wq.flushed == 1) goto next_cqe; } if (CQE_OPCODE(hw_cqe) == FW_RI_TERMINATE) goto next_cqe; if (CQE_OPCODE(hw_cqe) == FW_RI_READ_RESP) { /* If we have reached here because of async * event or other error, and have egress error * then drop */ if (CQE_TYPE(hw_cqe) == 1) goto next_cqe; /* drop peer2peer RTR reads. */ if (CQE_WRID_STAG(hw_cqe) == 1) goto next_cqe; /* * Eat completions for unsignaled read WRs. */ if (!qhp->wq.sq.oldest_read->signaled) { advance_oldest_read(&qhp->wq); goto next_cqe; } /* * Don't write to the HWCQ, create a new read req CQE * in local memory and move it into the swcq. */ create_read_req_cqe(&qhp->wq, hw_cqe, &read_cqe); hw_cqe = &read_cqe; advance_oldest_read(&qhp->wq); } /* if its a SQ completion, then do the magic to move all the * unsignaled and now in-order completions into the swcq. */ if (SQ_TYPE(hw_cqe)) { swsqe = &qhp->wq.sq.sw_sq[CQE_WRID_SQ_IDX(hw_cqe)]; swsqe->cqe = *hw_cqe; swsqe->complete = 1; flush_completed_wrs(&qhp->wq, &chp->cq); } else { swcqe = &chp->cq.sw_queue[chp->cq.sw_pidx]; *swcqe = *hw_cqe; swcqe->header |= cpu_to_be32(CQE_SWCQE_V(1)); t4_swcq_produce(&chp->cq); } next_cqe: t4_hwcq_consume(&chp->cq); ret = t4_next_hw_cqe(&chp->cq, &hw_cqe); if (qhp && flush_qhp != qhp) spin_unlock(&qhp->lock); } }