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authorParav Pandit <parav.pandit@emulex.com>2012-05-23 21:02:07 +0530
committerRoland Dreier <roland@purestorage.com>2012-05-29 12:49:36 -0700
commitcd4fedf9cfe2d453148dce0f105a41725e5107a3 (patch)
tree4564eb25bb7870a1cc00317b030edae84143ed65 /drivers
parentc23ddf7857bdb2e8001b0a058603497c765a580d (diff)
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RDMA/ocrdma: Correct queue free count math
Correct queue free count math for SQ, RQ for all hardware type. Update user-kernel ABI interface. Signed-off-by: Parav Pandit <parav.pandit@emulex.com> Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma.h1
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_abi.h5
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_hw.c7
-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_verbs.c5
4 files changed, 1 insertions, 17 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h
index 85a69c958559..037f5cea85bd 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma.h
@@ -231,7 +231,6 @@ struct ocrdma_qp_hwq_info {
u32 entry_size;
u32 max_cnt;
u32 max_wqe_idx;
- u32 free_delta;
u16 dbid; /* qid, where to ring the doorbell. */
u32 len;
dma_addr_t pa;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_abi.h b/drivers/infiniband/hw/ocrdma/ocrdma_abi.h
index a411a4e3193d..517ab20b727c 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_abi.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_abi.h
@@ -101,8 +101,6 @@ struct ocrdma_create_qp_uresp {
u32 rsvd1;
u32 num_wqe_allocated;
u32 num_rqe_allocated;
- u32 free_wqe_delta;
- u32 free_rqe_delta;
u32 db_sq_offset;
u32 db_rq_offset;
u32 db_shift;
@@ -126,8 +124,7 @@ struct ocrdma_create_srq_uresp {
u32 db_rq_offset;
u32 db_shift;
- u32 free_rqe_delta;
- u32 rsvd2;
+ u64 rsvd2;
u64 rsvd3;
} __packed;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index 9b204b1ba336..f26314fd5f6e 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -1990,19 +1990,12 @@ static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp,
max_wqe_allocated = 1 << max_wqe_allocated;
max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
- if (qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
- qp->sq.free_delta = 0;
- qp->rq.free_delta = 1;
- } else
- qp->sq.free_delta = 1;
-
qp->sq.max_cnt = max_wqe_allocated;
qp->sq.max_wqe_idx = max_wqe_allocated - 1;
if (!attrs->srq) {
qp->rq.max_cnt = max_rqe_allocated;
qp->rq.max_wqe_idx = max_rqe_allocated - 1;
- qp->rq.free_delta = 1;
}
}
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index e9f74d1b48f6..d16d172b6b6b 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -940,8 +940,6 @@ static int ocrdma_copy_qp_uresp(struct ocrdma_qp *qp,
uresp.db_rq_offset = OCRDMA_DB_RQ_OFFSET;
uresp.db_shift = 16;
}
- uresp.free_wqe_delta = qp->sq.free_delta;
- uresp.free_rqe_delta = qp->rq.free_delta;
if (qp->dpp_enabled) {
uresp.dpp_credit = dpp_credit_lmt;
@@ -1307,8 +1305,6 @@ static int ocrdma_hwq_free_cnt(struct ocrdma_qp_hwq_info *q)
free_cnt = (q->max_cnt - q->head) + q->tail;
else
free_cnt = q->tail - q->head;
- if (q->free_delta)
- free_cnt -= q->free_delta;
return free_cnt;
}
@@ -1501,7 +1497,6 @@ static int ocrdma_copy_srq_uresp(struct ocrdma_srq *srq, struct ib_udata *udata)
(srq->pd->id * srq->dev->nic_info.db_page_size);
uresp.db_page_size = srq->dev->nic_info.db_page_size;
uresp.num_rqe_allocated = srq->rq.max_cnt;
- uresp.free_rqe_delta = 1;
if (srq->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
uresp.db_rq_offset = OCRDMA_DB_GEN2_RQ1_OFFSET;
uresp.db_shift = 24;