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path: root/drivers/infiniband/hw/mthca/mthca_srq.c
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Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_srq.c')
-rw-r--r--drivers/infiniband/hw/mthca/mthca_srq.c43
1 files changed, 41 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c
index e7e153d9c4c..47a6a754a59 100644
--- a/drivers/infiniband/hw/mthca/mthca_srq.c
+++ b/drivers/infiniband/hw/mthca/mthca_srq.c
@@ -49,7 +49,8 @@ struct mthca_tavor_srq_context {
__be32 state_pd;
__be32 lkey;
__be32 uar;
- __be32 wqe_cnt;
+ __be16 limit_watermark;
+ __be16 wqe_cnt;
u32 reserved[2];
};
@@ -271,6 +272,9 @@ int mthca_alloc_srq(struct mthca_dev *dev, struct mthca_pd *pd,
srq->first_free = 0;
srq->last_free = srq->max - 1;
+ attr->max_wr = (mthca_is_memfree(dev)) ? srq->max - 1 : srq->max;
+ attr->max_sge = srq->max_gs;
+
return 0;
err_out_free_srq:
@@ -339,7 +343,7 @@ void mthca_free_srq(struct mthca_dev *dev, struct mthca_srq *srq)
int mthca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
enum ib_srq_attr_mask attr_mask)
-{
+{
struct mthca_dev *dev = to_mdev(ibsrq->device);
struct mthca_srq *srq = to_msrq(ibsrq);
int ret;
@@ -360,6 +364,41 @@ int mthca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
return 0;
}
+int mthca_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
+{
+ struct mthca_dev *dev = to_mdev(ibsrq->device);
+ struct mthca_srq *srq = to_msrq(ibsrq);
+ struct mthca_mailbox *mailbox;
+ struct mthca_arbel_srq_context *arbel_ctx;
+ struct mthca_tavor_srq_context *tavor_ctx;
+ u8 status;
+ int err;
+
+ mailbox = mthca_alloc_mailbox(dev, GFP_KERNEL);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ err = mthca_QUERY_SRQ(dev, srq->srqn, mailbox, &status);
+ if (err)
+ goto out;
+
+ if (mthca_is_memfree(dev)) {
+ arbel_ctx = mailbox->buf;
+ srq_attr->srq_limit = be16_to_cpu(arbel_ctx->limit_watermark);
+ } else {
+ tavor_ctx = mailbox->buf;
+ srq_attr->srq_limit = be16_to_cpu(tavor_ctx->limit_watermark);
+ }
+
+ srq_attr->max_wr = (mthca_is_memfree(dev)) ? srq->max - 1 : srq->max;
+ srq_attr->max_sge = srq->max_gs;
+
+out:
+ mthca_free_mailbox(dev, mailbox);
+
+ return err;
+}
+
void mthca_srq_event(struct mthca_dev *dev, u32 srqn,
enum ib_event_type event_type)
{