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authorEli Cohen <eli@mellanox.co.il>2006-03-13 14:33:01 +0200
committerRoland Dreier <rolandd@cisco.com>2006-03-20 10:08:26 -0800
commitfd02e8038eb943755e8727a0ea193c037a51714f (patch)
tree597dc0e67899c445ac85fc5b7ae8a151ca4491ee
parentbfef73fa78ca1e56175dcbd33aa11de4764f85a5 (diff)
IB/mthca: Query SRQ srq_limit fixes
Fix endianness handling of srq_limit: it is big-endian in the context structure, so we need to swab it before returning it. Also add support for srq_limit query for Tavor (non-MemFree) HCAs. Signed-off-by: Eli Cohen <eli@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
-rw-r--r--drivers/infiniband/hw/mthca/mthca_srq.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c
index 96fcc64c61c..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];
};
@@ -369,6 +370,7 @@ int mthca_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
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;
@@ -382,9 +384,11 @@ int mthca_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
if (mthca_is_memfree(dev)) {
arbel_ctx = mailbox->buf;
- srq_attr->srq_limit = arbel_ctx->limit_watermark;
- } else
- srq_attr->srq_limit = 0;
+ 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;