RDMA/mana_ib: Create and destroy RC QP

Implement HW requests to create and destroy an RC QP.
An RC QP may have 5 queues.

Signed-off-by: Konstantin Taranov <kotaranov@microsoft.com>
Link: https://lore.kernel.org/r/1716366242-558-2-git-send-email-kotaranov@linux.microsoft.com
Reviewed-by: Long Li <longli@microsoft.com>
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>

1 files changed, 59 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 2a411357640e..6bd60729ea32 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -888,3 +888,62 @@ int mana_ib_gd_destroy_cq(struct mana_ib_dev *mdev, struct mana_ib_cq *cq)
 
 	return 0;
 }
+
+int mana_ib_gd_create_rc_qp(struct mana_ib_dev *mdev, struct mana_ib_qp *qp,
+			    struct ib_qp_init_attr *attr, u32 doorbell, u64 flags)
+{
+	struct mana_ib_cq *send_cq = container_of(qp->ibqp.send_cq, struct mana_ib_cq, ibcq);
+	struct mana_ib_cq *recv_cq = container_of(qp->ibqp.recv_cq, struct mana_ib_cq, ibcq);
+	struct mana_ib_pd *pd = container_of(qp->ibqp.pd, struct mana_ib_pd, ibpd);
+	struct gdma_context *gc = mdev_to_gc(mdev);
+	struct mana_rnic_create_qp_resp resp = {};
+	struct mana_rnic_create_qp_req req = {};
+	int err, i;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_IB_CREATE_RC_QP, sizeof(req), sizeof(resp));
+	req.hdr.dev_id = gc->mana_ib.dev_id;
+	req.adapter = mdev->adapter_handle;
+	req.pd_handle = pd->pd_handle;
+	req.send_cq_handle = send_cq->cq_handle;
+	req.recv_cq_handle = recv_cq->cq_handle;
+	for (i = 0; i < MANA_RC_QUEUE_TYPE_MAX; i++)
+		req.dma_region[i] = qp->rc_qp.queues[i].gdma_region;
+	req.doorbell_page = doorbell;
+	req.max_send_wr = attr->cap.max_send_wr;
+	req.max_recv_wr = attr->cap.max_recv_wr;
+	req.max_send_sge = attr->cap.max_send_sge;
+	req.max_recv_sge = attr->cap.max_recv_sge;
+	req.flags = flags;
+
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err) {
+		ibdev_err(&mdev->ib_dev, "Failed to create rc qp err %d", err);
+		return err;
+	}
+	qp->qp_handle = resp.rc_qp_handle;
+	for (i = 0; i < MANA_RC_QUEUE_TYPE_MAX; i++) {
+		qp->rc_qp.queues[i].id = resp.queue_ids[i];
+		/* The GDMA regions are now owned by the RNIC QP handle */
+		qp->rc_qp.queues[i].gdma_region = GDMA_INVALID_DMA_REGION;
+	}
+	return 0;
+}
+
+int mana_ib_gd_destroy_rc_qp(struct mana_ib_dev *mdev, struct mana_ib_qp *qp)
+{
+	struct mana_rnic_destroy_rc_qp_resp resp = {0};
+	struct mana_rnic_destroy_rc_qp_req req = {0};
+	struct gdma_context *gc = mdev_to_gc(mdev);
+	int err;
+
+	mana_gd_init_req_hdr(&req.hdr, MANA_IB_DESTROY_RC_QP, sizeof(req), sizeof(resp));
+	req.hdr.dev_id = gc->mana_ib.dev_id;
+	req.adapter = mdev->adapter_handle;
+	req.rc_qp_handle = qp->qp_handle;
+	err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+	if (err) {
+		ibdev_err(&mdev->ib_dev, "Failed to destroy rc qp err %d", err);
+		return err;
+	}
+	return 0;
+}