diff options
Diffstat (limited to 'drivers/scsi/mpi3mr/mpi3mr_fw.c')
| -rw-r--r-- | drivers/scsi/mpi3mr/mpi3mr_fw.c | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/drivers/scsi/mpi3mr/mpi3mr_fw.c b/drivers/scsi/mpi3mr/mpi3mr_fw.c index 5ed31fe57474..656108dd2ee3 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_fw.c +++ b/drivers/scsi/mpi3mr/mpi3mr_fw.c @@ -2104,15 +2104,22 @@ static int mpi3mr_create_op_reply_q(struct mpi3mr_ioc *mrioc, u16 qidx) } reply_qid = qidx + 1; - op_reply_q->num_replies = MPI3MR_OP_REP_Q_QD; - if ((mrioc->pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) && - !mrioc->pdev->revision) - op_reply_q->num_replies = MPI3MR_OP_REP_Q_QD4K; + + if (mrioc->pdev->device == MPI3_MFGPAGE_DEVID_SAS4116) { + if (mrioc->pdev->revision) + op_reply_q->num_replies = MPI3MR_OP_REP_Q_QD; + else + op_reply_q->num_replies = MPI3MR_OP_REP_Q_QD4K; + } else + op_reply_q->num_replies = MPI3MR_OP_REP_Q_QD2K; + op_reply_q->ci = 0; op_reply_q->ephase = 1; atomic_set(&op_reply_q->pend_ios, 0); atomic_set(&op_reply_q->in_use, 0); op_reply_q->enable_irq_poll = false; + op_reply_q->qfull_watermark = + op_reply_q->num_replies - (MPI3MR_THRESHOLD_REPLY_COUNT * 2); if (!op_reply_q->q_segments) { retval = mpi3mr_alloc_op_reply_q_segments(mrioc, qidx); @@ -2416,8 +2423,10 @@ int mpi3mr_op_request_post(struct mpi3mr_ioc *mrioc, void *segment_base_addr; u16 req_sz = mrioc->facts.op_req_sz; struct segments *segments = op_req_q->q_segments; + struct op_reply_qinfo *op_reply_q = NULL; reply_qidx = op_req_q->reply_qid - 1; + op_reply_q = mrioc->op_reply_qinfo + reply_qidx; if (mrioc->unrecoverable) return -EFAULT; @@ -2448,6 +2457,15 @@ int mpi3mr_op_request_post(struct mpi3mr_ioc *mrioc, goto out; } + /* Reply queue is nearing to get full, push back IOs to SML */ + if ((mrioc->prevent_reply_qfull == true) && + (atomic_read(&op_reply_q->pend_ios) > + (op_reply_q->qfull_watermark))) { + atomic_inc(&mrioc->reply_qfull_count); + retval = -EAGAIN; + goto out; + } + segment_base_addr = segments[pi / op_req_q->segment_qd].segment; req_entry = (u8 *)segment_base_addr + ((pi % op_req_q->segment_qd) * req_sz); @@ -3091,6 +3109,9 @@ static void mpi3mr_process_factsdata(struct mpi3mr_ioc *mrioc, mrioc->facts.dma_mask = (facts_flags & MPI3_IOCFACTS_FLAGS_DMA_ADDRESS_WIDTH_MASK) >> MPI3_IOCFACTS_FLAGS_DMA_ADDRESS_WIDTH_SHIFT; + mrioc->facts.dma_mask = (facts_flags & + MPI3_IOCFACTS_FLAGS_DMA_ADDRESS_WIDTH_MASK) >> + MPI3_IOCFACTS_FLAGS_DMA_ADDRESS_WIDTH_SHIFT; mrioc->facts.protocol_flags = facts_data->protocol_flags; mrioc->facts.mpi_version = le32_to_cpu(facts_data->mpi_version.word); mrioc->facts.max_reqs = le16_to_cpu(facts_data->max_outstanding_requests); @@ -4214,6 +4235,9 @@ retry_init: mrioc->shost->transportt = mpi3mr_transport_template; } + if (mrioc->facts.max_req_limit) + mrioc->prevent_reply_qfull = true; + mrioc->reply_sz = mrioc->facts.reply_sz; retval = mpi3mr_check_reset_dma_mask(mrioc); |