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, 50 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 502cc8672eef..3329eaacc94e 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -27,9 +27,28 @@
  */
 #define MANA_IB_MAX_MR		0xFFFFFFu
 
+struct mana_ib_adapter_caps {
+	u32 max_sq_id;
+	u32 max_rq_id;
+	u32 max_cq_id;
+	u32 max_qp_count;
+	u32 max_cq_count;
+	u32 max_mr_count;
+	u32 max_pd_count;
+	u32 max_inbound_read_limit;
+	u32 max_outbound_read_limit;
+	u32 mw_count;
+	u32 max_srq_count;
+	u32 max_qp_wr;
+	u32 max_send_sge_count;
+	u32 max_recv_sge_count;
+	u32 max_inline_data_size;
+};
+
 struct mana_ib_dev {
 	struct ib_device ib_dev;
 	struct gdma_dev *gdma_dev;
+	struct mana_ib_adapter_caps adapter_caps;
 };
 
 struct mana_ib_wq {
@@ -92,6 +111,36 @@ struct mana_ib_rwq_ind_table {
 	struct ib_rwq_ind_table ib_ind_table;
 };
 
+enum mana_ib_command_code {
+	MANA_IB_GET_ADAPTER_CAP = 0x30001,
+};
+
+struct mana_ib_query_adapter_caps_req {
+	struct gdma_req_hdr hdr;
+}; /*HW Data */
+
+struct mana_ib_query_adapter_caps_resp {
+	struct gdma_resp_hdr hdr;
+	u32 max_sq_id;
+	u32 max_rq_id;
+	u32 max_cq_id;
+	u32 max_qp_count;
+	u32 max_cq_count;
+	u32 max_mr_count;
+	u32 max_pd_count;
+	u32 max_inbound_read_limit;
+	u32 max_outbound_read_limit;
+	u32 mw_count;
+	u32 max_srq_count;
+	u32 max_requester_sq_size;
+	u32 max_responder_sq_size;
+	u32 max_requester_rq_size;
+	u32 max_responder_rq_size;
+	u32 max_send_sge_count;
+	u32 max_recv_sge_count;
+	u32 max_inline_data_size;
+}; /* HW Data */
+
 int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem,
 				 mana_handle_t *gdma_region);
 
@@ -159,4 +208,5 @@ 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 *mdev);
 #endif