RDMA/mana_ib: query device capabilities

With RDMA device registered, use it to query on hardware capabilities and
cache this information for future query requests to the driver.

Signed-off-by: Long Li <longli@microsoft.com>
Link: https://lore.kernel.org/r/1702692255-23640-3-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

1 files changed, 52 insertions, 13 deletions

diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 53730306ed9b..faca092456fa 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -486,20 +486,17 @@ int mana_ib_get_port_immutable(struct ib_device *ibdev, u32 port_num,
 int mana_ib_query_device(struct ib_device *ibdev, struct ib_device_attr *props,
 			 struct ib_udata *uhw)
 {
-	props->max_qp = MANA_MAX_NUM_QUEUES;
-	props->max_qp_wr = MAX_SEND_BUFFERS_PER_QUEUE;
-
-	/*
-	 * max_cqe could be potentially much bigger.
-	 * As this version of driver only support RAW QP, set it to the same
-	 * value as max_qp_wr
-	 */
-	props->max_cqe = MAX_SEND_BUFFERS_PER_QUEUE;
-
+	struct mana_ib_dev *dev = container_of(ibdev,
+			struct mana_ib_dev, ib_dev);
+
+	props->max_qp = dev->adapter_caps.max_qp_count;
+	props->max_qp_wr = dev->adapter_caps.max_qp_wr;
+	props->max_cq = dev->adapter_caps.max_cq_count;
+	props->max_cqe = dev->adapter_caps.max_qp_wr;
+	props->max_mr = dev->adapter_caps.max_mr_count;
 	props->max_mr_size = MANA_IB_MAX_MR_SIZE;
-	props->max_mr = MANA_IB_MAX_MR;
-	props->max_send_sge = MAX_TX_WQE_SGL_ENTRIES;
-	props->max_recv_sge = MAX_RX_WQE_SGL_ENTRIES;
+	props->max_send_sge = dev->adapter_caps.max_send_sge_count;
+	props->max_recv_sge = dev->adapter_caps.max_recv_sge_count;
 
 	return 0;
 }
@@ -521,3 +518,45 @@ int mana_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
 void mana_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
 {
 }
+
+int mana_ib_gd_query_adapter_caps(struct mana_ib_dev *dev)
+{
+	struct mana_ib_adapter_caps *caps = &dev->adapter_caps;
+	struct mana_ib_query_adapter_caps_resp resp = {};
+	struct mana_ib_query_adapter_caps_req req = {};
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_IB_GET_ADAPTER_CAP, sizeof(req),
+			     sizeof(resp));
+	req.hdr.resp.msg_version = GDMA_MESSAGE_V3;
+	req.hdr.dev_id = dev->gdma_dev->dev_id;
+
+	err = mana_gd_send_request(dev->gdma_dev->gdma_context, sizeof(req),
+				   &req, sizeof(resp), &resp);
+
+	if (err) {
+		ibdev_err(&dev->ib_dev,
+			  "Failed to query adapter caps err %d", err);
+		return err;
+	}
+
+	caps->max_sq_id = resp.max_sq_id;
+	caps->max_rq_id = resp.max_rq_id;
+	caps->max_cq_id = resp.max_cq_id;
+	caps->max_qp_count = resp.max_qp_count;
+	caps->max_cq_count = resp.max_cq_count;
+	caps->max_mr_count = resp.max_mr_count;
+	caps->max_pd_count = resp.max_pd_count;
+	caps->max_inbound_read_limit = resp.max_inbound_read_limit;
+	caps->max_outbound_read_limit = resp.max_outbound_read_limit;
+	caps->mw_count = resp.mw_count;
+	caps->max_srq_count = resp.max_srq_count;
+	caps->max_qp_wr = min_t(u32,
+				resp.max_requester_sq_size / GDMA_MAX_SQE_SIZE,
+				resp.max_requester_rq_size / GDMA_MAX_RQE_SIZE);
+	caps->max_inline_data_size = resp.max_inline_data_size;
+	caps->max_send_sge_count = resp.max_send_sge_count;
+	caps->max_recv_sge_count = resp.max_recv_sge_count;
+
+	return 0;
+}