RDMA/ocrdma: Correct queue SGE calculation

Fix max sge calculation for sq, rq, srq for all hardware types.

Signed-off-by: Mahesh Vardhamanaiah <mahesh.vardhamanaiah@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

4 files changed, 10 insertions, 3 deletions

diff --git a/drivers/infiniband/hw/ocrdma/ocrdma.h b/drivers/infiniband/hw/ocrdma/ocrdma.h
index 037f5cea85bd..48970af23679 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma.h
@@ -61,6 +61,7 @@ struct ocrdma_dev_attr {
         u32 max_inline_data;
         int max_send_sge;
         int max_recv_sge;
+        int max_srq_sge;
         int max_mr;
         u64 max_mr_size;
         u32 max_num_mr_pbl;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
index 7507968deb2c..71942af4fce9 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -1002,6 +1002,9 @@ static void ocrdma_get_attr(struct ocrdma_dev *dev,
         attr->max_recv_sge = (rsp->max_write_send_sge &
                               OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
             OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT;
+        attr->max_srq_sge = (rsp->max_srq_rqe_sge &
+                              OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >>
+            OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET;
         attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp &
                                 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >>
             OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT;
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
index 84114416ce7c..c75cbdfa87e7 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_sli.h
@@ -418,6 +418,9 @@ enum {
 
         OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT         = 0,
         OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK          = 0xFFFF,
+        OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_SHIFT        = 16,
+        OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_MASK         = 0xFFFF <<
+                                OCRDMA_MBX_QUERY_CFG_MAX_WRITE_SGE_SHIFT,
 
         OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT       = 0,
         OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK        = 0xFFFF,
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
index d16d172b6b6b..0e88088545ac 100644
--- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
@@ -83,8 +83,8 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr)
                                         IB_DEVICE_SHUTDOWN_PORT |
                                         IB_DEVICE_SYS_IMAGE_GUID |
                                         IB_DEVICE_LOCAL_DMA_LKEY;
-        attr->max_sge = dev->attr.max_send_sge;
-        attr->max_sge_rd = dev->attr.max_send_sge;
+        attr->max_sge = min(dev->attr.max_send_sge, dev->attr.max_srq_sge);
+        attr->max_sge_rd = 0;
         attr->max_cq = dev->attr.max_cq;
         attr->max_cqe = dev->attr.max_cqe;
         attr->max_mr = dev->attr.max_mr;
@@ -97,7 +97,7 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr)
             min(dev->attr.max_ord_per_qp, dev->attr.max_ird_per_qp);
         attr->max_qp_init_rd_atom = dev->attr.max_ord_per_qp;
         attr->max_srq = (dev->attr.max_qp - 1);
-        attr->max_srq_sge = attr->max_sge;
+        attr->max_srq_sge = attr->max_srq_sge;
         attr->max_srq_wr = dev->attr.max_rqe;
         attr->local_ca_ack_delay = dev->attr.local_ca_ack_delay;
         attr->max_fast_reg_page_list_len = 0;