[PATCH rdma-next 2/6] RDMA/mana_ib: create and destroy RNIC cqs

Konstantin Taranov
2024-04-18T16:52:11Z

From: Konstantin Taranov <kotaranov@microsoft.com>

Implement RNIC requests for creation and destruction of RNIC CQs.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
---
drivers/infiniband/hw/mana/main.c | 54 ++++++++++++++++++++++++++++
drivers/infiniband/hw/mana/mana_ib.h | 32 +++++++++++++++++
2 files changed, 86 insertions(+)

diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 546d059..2a41135 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -834,3 +834,57 @@ int mana_ib_gd_config_mac(struct mana_ib_dev *mdev, enum mana_ib_addr_op op, u8

return 0;
}
+
+int mana_ib_gd_create_cq(struct mana_ib_dev *mdev, struct mana_ib_cq *cq, u32 doorbell)
+{
+ struct gdma_context *gc = mdev_to_gc(mdev);
+ struct mana_rnic_create_cq_resp resp = {};
+ struct mana_rnic_create_cq_req req = {};
+ int err;
+
+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_CREATE_CQ, sizeof(req), sizeof(resp));
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+ req.adapter = mdev->adapter_handle;
+ req.gdma_region = cq->queue.gdma_region;
+ req.eq_id = mdev->eqs[cq->comp_vector]->id;
+ req.doorbell_page = doorbell;
+
+ err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+
+ if (err) {
+ ibdev_err(&mdev->ib_dev, "Failed to create cq err %d", err);
+ return err;
+ }
+
+ cq->queue.id = resp.cq_id;
+ cq->cq_handle = resp.cq_handle;
+ /* The GDMA region is now owned by the CQ handle */
+ cq->queue.gdma_region = GDMA_INVALID_DMA_REGION;
+
+ return 0;
+}
+
+int mana_ib_gd_destroy_cq(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
+{
+ struct gdma_context *gc = mdev_to_gc(mdev);
+ struct mana_rnic_destroy_cq_resp resp = {};
+ struct mana_rnic_destroy_cq_req req = {};
+ int err;
+
+ if (cq->cq_handle == INVALID_MANA_HANDLE)
+ return 0;
+
+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_DESTROY_CQ, sizeof(req), sizeof(resp));
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+ req.adapter = mdev->adapter_handle;
+ req.cq_handle = cq->cq_handle;
+
+ err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+
+ if (err) {
+ ibdev_err(&mdev->ib_dev, "Failed to destroy cq err %d", err);
+ return err;
+ }
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index bfcf6df..9162f29 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -92,6 +92,7 @@ struct mana_ib_cq {
struct mana_ib_queue queue;
int cqe;
u32 comp_vector;
+ mana_handle_t cq_handle;
};

struct mana_ib_qp {
@@ -119,6 +120,8 @@ enum mana_ib_command_code {
MANA_IB_DESTROY_ADAPTER = 0x30003,
MANA_IB_CONFIG_IP_ADDR = 0x30004,
MANA_IB_CONFIG_MAC_ADDR = 0x30005,
+ MANA_IB_CREATE_CQ = 0x30008,
+ MANA_IB_DESTROY_CQ = 0x30009,
};

struct mana_ib_query_adapter_caps_req {
@@ -202,6 +205,31 @@ struct mana_rnic_config_mac_addr_resp {
struct gdma_resp_hdr hdr;
}; /* HW Data */

+struct mana_rnic_create_cq_req {
+ struct gdma_req_hdr hdr;
+ mana_handle_t adapter;
+ u64 gdma_region;
+ u32 eq_id;
+ u32 doorbell_page;
+}; /* HW Data */
+
+struct mana_rnic_create_cq_resp {
+ struct gdma_resp_hdr hdr;
+ mana_handle_t cq_handle;
+ u32 cq_id;
+ u32 reserved;
+}; /* HW Data */
+
+struct mana_rnic_destroy_cq_req {
+ struct gdma_req_hdr hdr;
+ mana_handle_t adapter;
+ mana_handle_t cq_handle;
+}; /* HW Data */
+
+struct mana_rnic_destroy_cq_resp {
+ struct gdma_resp_hdr hdr;
+}; /* HW Data */
+
static inline struct gdma_context *mdev_to_gc(struct mana_ib_dev *mdev)
{
return mdev->gdma_dev->gdma_context;
@@ -321,4 +349,8 @@ int mana_ib_gd_add_gid(const struct ib_gid_attr *attr, void **context);
int mana_ib_gd_del_gid(const struct ib_gid_attr *attr, void **context);

int mana_ib_gd_config_mac(struct mana_ib_dev *mdev, enum mana_ib_addr_op op, u8 *mac);
+
+int mana_ib_gd_create_cq(struct mana_ib_dev *mdev, struct mana_ib_cq *cq, u32 doorbell);
+
+int mana_ib_gd_destroy_cq(struct mana_ib_dev *mdev, struct mana_ib_cq *cq);
#endif
--
2.43.0