RDMA/ocrdma: Return proper value for max_mr_size

Update the max_mr_size with proper value. Corrected the response
structure of query config mailbox command.
Signed-off-by: Mitesh Ahuja <mitesh.ahuja@emulex.Com>
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

drivers/infiniband/hw/ocrdma/ocrdma_hw.c

@@ -1088,7 +1088,8 @@ static void ocrdma_get_attr(struct ocrdma_dev *dev,
 	    OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_SHIFT;
 	attr->max_mw = rsp->max_mw;
 	attr->max_mr = rsp->max_mr;
-	attr->max_mr_size = ~0ull;
+	attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) |
+			      rsp->max_mr_size_lo;
 	attr->max_fmr = 0;
 	attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
 	attr->max_num_mr_pbl = rsp->max_num_mr_pbl;

drivers/infiniband/hw/ocrdma/ocrdma_sli.h

@@ -530,8 +530,8 @@ struct ocrdma_mbx_query_config {
 	u32 max_ird_ord_per_qp;
 	u32 max_shared_ird_ord;
 	u32 max_mr;
-	u32 max_mr_size_lo;
 	u32 max_mr_size_hi;
+	u32 max_mr_size_lo;
 	u32 max_num_mr_pbl;
 	u32 max_mw;
 	u32 max_fmr;

drivers/infiniband/hw/ocrdma/ocrdma_verbs.c

@@ -69,7 +69,7 @@ int ocrdma_query_device(struct ib_device *ibdev, struct ib_device_attr *attr)
 	memcpy(&attr->fw_ver, &dev->attr.fw_ver[0],
 	       min(sizeof(dev->attr.fw_ver), sizeof(attr->fw_ver)));
 	ocrdma_get_guid(dev, (u8 *)&attr->sys_image_guid);
-	attr->max_mr_size = ~0ull;
+	attr->max_mr_size = dev->attr.max_mr_size;
 	attr->page_size_cap = 0xffff000;
 	attr->vendor_id = dev->nic_info.pdev->vendor;
 	attr->vendor_part_id = dev->nic_info.pdev->device;