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Message-Id: <1702692255-23640-3-git-send-email-longli@linuxonhyperv.com>
Date: Fri, 15 Dec 2023 18:04:14 -0800
From: longli@...uxonhyperv.com
To: Jason Gunthorpe <jgg@...pe.ca>,
Leon Romanovsky <leon@...nel.org>,
Ajay Sharma <sharmaajay@...rosoft.com>,
Dexuan Cui <decui@...rosoft.com>,
"K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Wei Liu <wei.liu@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: linux-rdma@...r.kernel.org,
linux-hyperv@...r.kernel.org,
netdev@...r.kernel.org,
linux-kernel@...r.kernel.org,
Long Li <longli@...rosoft.com>
Subject: [Patch v4 2/3] RDMA/mana_ib: query device capabilities
From: Long Li <longli@...rosoft.com>
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@...rosoft.com>
---
Change in v4:
On query device failure, goto deregister_device, not ib_free_device
Change function name mana_ib_query_adapter_caps() to mana_ib_gd_query_adapter_caps() to better reflect this is a HWC request
drivers/infiniband/hw/mana/cq.c | 2 +-
drivers/infiniband/hw/mana/device.c | 7 +++
drivers/infiniband/hw/mana/main.c | 65 ++++++++++++++++++++++------
drivers/infiniband/hw/mana/mana_ib.h | 50 +++++++++++++++++++++
drivers/infiniband/hw/mana/qp.c | 4 +-
include/net/mana/gdma.h | 1 +
6 files changed, 113 insertions(+), 16 deletions(-)
diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c
index d141cab8a1e6..09a2c263e39b 100644
--- a/drivers/infiniband/hw/mana/cq.c
+++ b/drivers/infiniband/hw/mana/cq.c
@@ -26,7 +26,7 @@ int mana_ib_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
return err;
}
- if (attr->cqe > MAX_SEND_BUFFERS_PER_QUEUE) {
+ if (attr->cqe > mdev->adapter_caps.max_qp_wr) {
ibdev_dbg(ibdev, "CQE %d exceeding limit\n", attr->cqe);
return -EINVAL;
}
diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index fe025e13a45c..6fa902ee80a6 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -85,6 +85,13 @@ static int mana_ib_probe(struct auxiliary_device *adev,
}
dev->gdma_dev = &mdev->gdma_context->mana_ib;
+ ret = mana_ib_gd_query_adapter_caps(dev);
+ if (ret) {
+ ibdev_err(&dev->ib_dev, "Failed to query device caps, ret %d",
+ ret);
+ goto deregister_device;
+ }
+
ret = ib_register_device(&dev->ib_dev, "mana_%d",
mdev->gdma_context->dev);
if (ret)
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;
+}
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
diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c
index ae45d28eef5e..4667b18ec1dd 100644
--- a/drivers/infiniband/hw/mana/qp.c
+++ b/drivers/infiniband/hw/mana/qp.c
@@ -130,7 +130,7 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd,
return ret;
}
- if (attr->cap.max_recv_wr > MAX_SEND_BUFFERS_PER_QUEUE) {
+ if (attr->cap.max_recv_wr > mdev->adapter_caps.max_qp_wr) {
ibdev_dbg(&mdev->ib_dev,
"Requested max_recv_wr %d exceeding limit\n",
attr->cap.max_recv_wr);
@@ -296,7 +296,7 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd,
if (port < 1 || port > mc->num_ports)
return -EINVAL;
- if (attr->cap.max_send_wr > MAX_SEND_BUFFERS_PER_QUEUE) {
+ if (attr->cap.max_send_wr > mdev->adapter_caps.max_qp_wr) {
ibdev_dbg(&mdev->ib_dev,
"Requested max_send_wr %d exceeding limit\n",
attr->cap.max_send_wr);
diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h
index 000f0d7670f7..797971e2d5a5 100644
--- a/include/net/mana/gdma.h
+++ b/include/net/mana/gdma.h
@@ -150,6 +150,7 @@ struct gdma_general_req {
#define GDMA_MESSAGE_V1 1
#define GDMA_MESSAGE_V2 2
+#define GDMA_MESSAGE_V3 3
struct gdma_general_resp {
struct gdma_resp_hdr hdr;
--
2.25.1
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