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

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Message-Id: <1713459125-14914-3-git-send-email-kotaranov@linux.microsoft.com>
Date: Thu, 18 Apr 2024 09:52:01 -0700
From: Konstantin Taranov <kotaranov@...ux.microsoft.com>
To: kotaranov@...rosoft.com,
	sharmaajay@...rosoft.com,
	longli@...rosoft.com,
	jgg@...pe.ca,
	leon@...nel.org
Cc: linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH rdma-next 2/6] RDMA/mana_ib: create and destroy RNIC cqs

From: Konstantin Taranov <kotaranov@...rosoft.com>

Implement RNIC requests for creation and destruction of RNIC CQs.

Signed-off-by: Konstantin Taranov <kotaranov@...rosoft.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