From: Long Li <[email protected]>
This patchset add support for registering a RDMA device handle with SoC
for support of upcoming RC queue pairs and CQ interrupts.
This patchset is partially based on Ajay Sharma's work:
https://lore.kernel.org/netdev/[email protected]
Long Li (4):
RDMA/mana_ib: register RDMA device with GDMA
RDMA/mana_ib: create and process EQ events
RDMA/mana_ib: create RDMA adapter handle
RDMA/mana_ib: query device capabilities
drivers/infiniband/hw/mana/cq.c | 2 +-
drivers/infiniband/hw/mana/device.c | 52 +++++-
drivers/infiniband/hw/mana/main.c | 166 ++++++++++++++++--
drivers/infiniband/hw/mana/mana_ib.h | 85 +++++++++
drivers/infiniband/hw/mana/qp.c | 36 +++-
.../net/ethernet/microsoft/mana/gdma_main.c | 152 +++++++++-------
drivers/net/ethernet/microsoft/mana/mana_en.c | 3 +
include/net/mana/gdma.h | 19 +-
8 files changed, 420 insertions(+), 95 deletions(-)
--
2.34.1
From: Long Li <[email protected]>
MANA hardware supports RC queue pairs over RoCE. Software needs to register
with the RDMA management interface on the SoC to access this feature.
Signed-off-by: Long Li <[email protected]>
---
drivers/infiniband/hw/mana/device.c | 25 ++++++++++++++++---
drivers/infiniband/hw/mana/main.c | 4 +--
drivers/infiniband/hw/mana/qp.c | 15 +++++------
.../net/ethernet/microsoft/mana/gdma_main.c | 5 ++++
include/net/mana/gdma.h | 4 +++
5 files changed, 41 insertions(+), 12 deletions(-)
diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index d4541b8707e4..ee29ddf36cf3 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -68,7 +68,6 @@ static int mana_ib_probe(struct auxiliary_device *adev,
ibdev_dbg(&dev->ib_dev, "mdev=%p id=%d num_ports=%d\n", mdev,
mdev->dev_id.as_uint32, dev->ib_dev.phys_port_cnt);
- dev->gdma_dev = mdev;
dev->ib_dev.node_type = RDMA_NODE_IB_CA;
/*
@@ -78,16 +77,33 @@ static int mana_ib_probe(struct auxiliary_device *adev,
dev->ib_dev.num_comp_vectors = 1;
dev->ib_dev.dev.parent = mdev->gdma_context->dev;
- ret = ib_register_device(&dev->ib_dev, "mana_%d",
- mdev->gdma_context->dev);
+ ret = mana_gd_register_device(&mdev->gdma_context->mana_ib);
+ if (ret) {
+ ibdev_err(&dev->ib_dev, "Failed to register device, ret %d",
+ ret);
+ goto free_ib_device;
+ }
+ dev->gdma_dev = &mdev->gdma_context->mana_ib;
+
if (ret) {
ib_dealloc_device(&dev->ib_dev);
return ret;
}
+ ret = ib_register_device(&dev->ib_dev, "mana_%d",
+ mdev->gdma_context->dev);
+ if (ret)
+ goto destroy_adapter;
+
dev_set_drvdata(&adev->dev, dev);
return 0;
+
+destroy_adapter:
+ mana_gd_deregister_device(dev->gdma_dev);
+free_ib_device:
+ ib_dealloc_device(&dev->ib_dev);
+ return ret;
}
static void mana_ib_remove(struct auxiliary_device *adev)
@@ -95,6 +111,9 @@ static void mana_ib_remove(struct auxiliary_device *adev)
struct mana_ib_dev *dev = dev_get_drvdata(&adev->dev);
ib_unregister_device(&dev->ib_dev);
+
+ mana_gd_deregister_device(dev->gdma_dev);
+
ib_dealloc_device(&dev->ib_dev);
}
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 7be4c3adb4e2..53730306ed9b 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -8,7 +8,7 @@
void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd,
u32 port)
{
- struct gdma_dev *gd = dev->gdma_dev;
+ struct gdma_dev *gd = &dev->gdma_dev->gdma_context->mana;
struct mana_port_context *mpc;
struct net_device *ndev;
struct mana_context *mc;
@@ -31,7 +31,7 @@ void mana_ib_uncfg_vport(struct mana_ib_dev *dev, struct mana_ib_pd *pd,
int mana_ib_cfg_vport(struct mana_ib_dev *dev, u32 port, struct mana_ib_pd *pd,
u32 doorbell_id)
{
- struct gdma_dev *mdev = dev->gdma_dev;
+ struct gdma_dev *mdev = &dev->gdma_dev->gdma_context->mana;
struct mana_port_context *mpc;
struct mana_context *mc;
struct net_device *ndev;
diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c
index 4b3b5b274e84..ae45d28eef5e 100644
--- a/drivers/infiniband/hw/mana/qp.c
+++ b/drivers/infiniband/hw/mana/qp.c
@@ -21,8 +21,8 @@ static int mana_ib_cfg_vport_steering(struct mana_ib_dev *dev,
u32 req_buf_size;
int i, err;
- mdev = dev->gdma_dev;
- gc = mdev->gdma_context;
+ gc = dev->gdma_dev->gdma_context;
+ mdev = &gc->mana;
req_buf_size =
sizeof(*req) + sizeof(mana_handle_t) * MANA_INDIRECT_TABLE_SIZE;
@@ -102,20 +102,21 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd,
struct ib_rwq_ind_table *ind_tbl = attr->rwq_ind_tbl;
struct mana_ib_create_qp_rss_resp resp = {};
struct mana_ib_create_qp_rss ucmd = {};
- struct gdma_dev *gd = mdev->gdma_dev;
mana_handle_t *mana_ind_table;
struct mana_port_context *mpc;
+ unsigned int ind_tbl_size;
struct mana_context *mc;
struct net_device *ndev;
struct mana_ib_cq *cq;
struct mana_ib_wq *wq;
- unsigned int ind_tbl_size;
+ struct gdma_dev *gd;
struct ib_cq *ibcq;
struct ib_wq *ibwq;
int i = 0;
u32 port;
int ret;
+ gd = &mdev->gdma_dev->gdma_context->mana;
mc = gd->driver_data;
if (!udata || udata->inlen < sizeof(ucmd))
@@ -266,8 +267,8 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd,
struct mana_ib_ucontext *mana_ucontext =
rdma_udata_to_drv_context(udata, struct mana_ib_ucontext,
ibucontext);
+ struct gdma_dev *gd = &mdev->gdma_dev->gdma_context->mana;
struct mana_ib_create_qp_resp resp = {};
- struct gdma_dev *gd = mdev->gdma_dev;
struct mana_ib_create_qp ucmd = {};
struct mana_obj_spec wq_spec = {};
struct mana_obj_spec cq_spec = {};
@@ -437,7 +438,7 @@ static int mana_ib_destroy_qp_rss(struct mana_ib_qp *qp,
{
struct mana_ib_dev *mdev =
container_of(qp->ibqp.device, struct mana_ib_dev, ib_dev);
- struct gdma_dev *gd = mdev->gdma_dev;
+ struct gdma_dev *gd = &mdev->gdma_dev->gdma_context->mana;
struct mana_port_context *mpc;
struct mana_context *mc;
struct net_device *ndev;
@@ -464,7 +465,7 @@ static int mana_ib_destroy_qp_raw(struct mana_ib_qp *qp, struct ib_udata *udata)
{
struct mana_ib_dev *mdev =
container_of(qp->ibqp.device, struct mana_ib_dev, ib_dev);
- struct gdma_dev *gd = mdev->gdma_dev;
+ struct gdma_dev *gd = &mdev->gdma_dev->gdma_context->mana;
struct ib_pd *ibpd = qp->ibqp.pd;
struct mana_port_context *mpc;
struct mana_context *mc;
diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index 6367de0c2c2e..02e50ed632ee 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -158,6 +158,9 @@ static int mana_gd_detect_devices(struct pci_dev *pdev)
if (dev_type == GDMA_DEVICE_MANA) {
gc->mana.gdma_context = gc;
gc->mana.dev_id = dev;
+ } else if (dev_type == GDMA_DEVICE_MANA_IB) {
+ gc->mana_ib.dev_id = dev;
+ gc->mana_ib.gdma_context = gc;
}
}
@@ -971,6 +974,7 @@ int mana_gd_register_device(struct gdma_dev *gd)
return 0;
}
+EXPORT_SYMBOL(mana_gd_register_device);
int mana_gd_deregister_device(struct gdma_dev *gd)
{
@@ -1001,6 +1005,7 @@ int mana_gd_deregister_device(struct gdma_dev *gd)
return err;
}
+EXPORT_SYMBOL(mana_gd_deregister_device);
u32 mana_gd_wq_avail_space(struct gdma_queue *wq)
{
diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h
index 88b6ef7ce1a6..000f0d7670f7 100644
--- a/include/net/mana/gdma.h
+++ b/include/net/mana/gdma.h
@@ -66,6 +66,7 @@ enum {
GDMA_DEVICE_NONE = 0,
GDMA_DEVICE_HWC = 1,
GDMA_DEVICE_MANA = 2,
+ GDMA_DEVICE_MANA_IB = 3,
};
struct gdma_resource {
@@ -387,6 +388,9 @@ struct gdma_context {
/* Azure network adapter */
struct gdma_dev mana;
+
+ /* Azure RDMA adapter */
+ struct gdma_dev mana_ib;
};
#define MAX_NUM_GDMA_DEVICES 4
--
2.34.1
From: Long Li <[email protected]>
Create the RDMA device handle with the SoC using the management EQ created
earlier.
Signed-off-by: Long Li <[email protected]>
---
drivers/infiniband/hw/mana/device.c | 10 ++++--
drivers/infiniband/hw/mana/main.c | 51 ++++++++++++++++++++++++++++
drivers/infiniband/hw/mana/mana_ib.h | 30 ++++++++++++++++
3 files changed, 88 insertions(+), 3 deletions(-)
diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index 3da4763e1a0c..5e5aa75230c2 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -93,9 +93,10 @@ static int mana_ib_probe(struct auxiliary_device *adev,
goto deregister_device;
}
+ ret = mana_ib_create_adapter(dev);
if (ret) {
- ib_dealloc_device(&dev->ib_dev);
- return ret;
+ ibdev_err(&dev->ib_dev, "Failed to create adapter");
+ goto free_error_eq;
}
ret = ib_register_device(&dev->ib_dev, "mana_%d",
@@ -108,8 +109,10 @@ static int mana_ib_probe(struct auxiliary_device *adev,
return 0;
destroy_adapter:
- mana_gd_destroy_queue(dev->gdma_dev->gdma_context, dev->fatal_err_eq);
+ mana_ib_destroy_adapter(dev);
+free_error_eq:
xa_destroy(&dev->rq_to_qp_lookup_table);
+ mana_gd_destroy_queue(dev->gdma_dev->gdma_context, dev->fatal_err_eq);
deregister_device:
mana_gd_deregister_device(dev->gdma_dev);
free_ib_device:
@@ -123,6 +126,7 @@ static void mana_ib_remove(struct auxiliary_device *adev)
ib_unregister_device(&dev->ib_dev);
+ mana_ib_destroy_adapter(dev);
mana_gd_destroy_queue(dev->gdma_dev->gdma_context, dev->fatal_err_eq);
xa_destroy(&dev->rq_to_qp_lookup_table);
mana_gd_deregister_device(dev->gdma_dev);
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 032f926bf1ab..4f4343d14041 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -522,6 +522,57 @@ void mana_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
{
}
+int mana_ib_destroy_adapter(struct mana_ib_dev *dev)
+{
+ struct mana_ib_destroy_adapter_resp resp = {};
+ struct mana_ib_destroy_adapter_req req = {};
+ struct gdma_context *gc;
+ int err;
+
+ gc = dev->gdma_dev->gdma_context;
+
+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_DESTROY_ADAPTER, sizeof(req),
+ sizeof(resp));
+ req.adapter = dev->adapter_handle;
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+
+ err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+
+ if (err) {
+ ibdev_err(&dev->ib_dev, "Failed to destroy adapter err %d", err);
+ return err;
+ }
+
+ return 0;
+}
+
+int mana_ib_create_adapter(struct mana_ib_dev *dev)
+{
+ struct mana_ib_create_adapter_resp resp = {};
+ struct mana_ib_create_adapter_req req = {};
+ struct gdma_context *gc;
+ int err;
+
+ gc = dev->gdma_dev->gdma_context;
+
+ mana_gd_init_req_hdr(&req.hdr, MANA_IB_CREATE_ADAPTER, sizeof(req),
+ sizeof(resp));
+ req.notify_eq_id = dev->fatal_err_eq->id;
+ req.hdr.dev_id = gc->mana_ib.dev_id;
+
+ err = mana_gd_send_request(gc, sizeof(req), &req, sizeof(resp), &resp);
+
+ if (err) {
+ ibdev_err(&dev->ib_dev, "Failed to create adapter err %d",
+ err);
+ return err;
+ }
+
+ dev->adapter_handle = resp.adapter;
+
+ return 0;
+}
+
static void mana_ib_critical_event_handler(void *ctx, struct gdma_queue *queue,
struct gdma_event *event)
{
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index a5577c119def..4286caf0d67c 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -31,6 +31,7 @@ struct mana_ib_dev {
struct ib_device ib_dev;
struct gdma_dev *gdma_dev;
struct gdma_queue *fatal_err_eq;
+ mana_handle_t adapter_handle;
struct xarray rq_to_qp_lookup_table;
};
@@ -94,6 +95,31 @@ struct mana_ib_rwq_ind_table {
struct ib_rwq_ind_table ib_ind_table;
};
+enum mana_ib_command_code {
+ MANA_IB_CREATE_ADAPTER = 0x30002,
+ MANA_IB_DESTROY_ADAPTER = 0x30003,
+};
+
+struct mana_ib_create_adapter_req {
+ struct gdma_req_hdr hdr;
+ u32 notify_eq_id;
+ u32 reserved;
+}; /*HW Data */
+
+struct mana_ib_create_adapter_resp {
+ struct gdma_resp_hdr hdr;
+ mana_handle_t adapter;
+}; /* HW Data */
+
+struct mana_ib_destroy_adapter_req {
+ struct gdma_req_hdr hdr;
+ mana_handle_t adapter;
+}; /*HW Data */
+
+struct mana_ib_destroy_adapter_resp {
+ struct gdma_resp_hdr hdr;
+}; /* HW Data */
+
int mana_ib_gd_create_dma_region(struct mana_ib_dev *dev, struct ib_umem *umem,
mana_handle_t *gdma_region);
@@ -163,4 +189,8 @@ void mana_ib_disassociate_ucontext(struct ib_ucontext *ibcontext);
int mana_ib_create_error_eq(struct mana_ib_dev *mdev);
+int mana_ib_create_adapter(struct mana_ib_dev *mdev);
+
+int mana_ib_destroy_adapter(struct mana_ib_dev *mdev);
+
#endif
--
2.34.1
From: Long Li <[email protected]>
With RDMA device handle created, use it to query on hardware capabilities
and cache this information for future query requests to the driver.
Signed-off-by: Long Li <[email protected]>
---
drivers/infiniband/hw/mana/cq.c | 2 +-
drivers/infiniband/hw/mana/device.c | 6 +++
drivers/infiniband/hw/mana/main.c | 59 +++++++++++++++++++++++-----
drivers/infiniband/hw/mana/mana_ib.h | 51 ++++++++++++++++++++++++
drivers/infiniband/hw/mana/qp.c | 6 ++-
include/net/mana/gdma.h | 1 +
6 files changed, 112 insertions(+), 13 deletions(-)
diff --git a/drivers/infiniband/hw/mana/cq.c b/drivers/infiniband/hw/mana/cq.c
index d141cab8a1e6..71064f17c235 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_requester_sq_size) {
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 5e5aa75230c2..06f53df072bb 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -99,6 +99,12 @@ static int mana_ib_probe(struct auxiliary_device *adev,
goto free_error_eq;
}
+ ret = mana_ib_query_adapter_caps(dev);
+ if (ret) {
+ ibdev_dbg(&dev->ib_dev, "Failed to get device caps");
+ goto destroy_adapter;
+ }
+
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 4f4343d14041..bf27fa395a67 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -486,18 +486,14 @@ 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_requester_sq_size;
+ props->max_cqe = dev->adapter_caps.max_requester_sq_size;
+ 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;
@@ -624,3 +620,46 @@ int mana_ib_create_error_eq(struct mana_ib_dev *dev)
return 0;
}
+
+int mana_ib_query_adapter_caps(struct mana_ib_dev *dev)
+{
+ struct mana_ib_query_adapter_caps_resp resp = {};
+ struct mana_ib_query_adapter_caps_req req = {};
+ struct mana_ib_adapter_caps *caps = &dev->adapter_caps;
+ 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_requester_sq_size = resp.max_requester_sq_size;
+ caps->max_responder_sq_size = resp.max_responder_sq_size;
+ caps->max_requester_rq_size = resp.max_requester_rq_size;
+ caps->max_responder_rq_size = resp.max_responder_rq_size;
+ caps->max_inline_data_size = resp.max_inline_data_size;
+ caps->max_send_wqe_size = MAX_TX_WQE_SGL_ENTRIES;
+ caps->max_recv_wqe_size = MAX_RX_WQE_SGL_ENTRIES;
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 4286caf0d67c..d7a56b075fbc 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -27,11 +27,33 @@
*/
#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_requester_sq_size;
+ u32 max_responder_sq_size;
+ u32 max_requester_rq_size;
+ u32 max_responder_rq_size;
+ u32 max_send_wqe_size;
+ u32 max_recv_wqe_size;
+ u32 max_inline_data_size;
+};
+
struct mana_ib_dev {
struct ib_device ib_dev;
struct gdma_dev *gdma_dev;
struct gdma_queue *fatal_err_eq;
mana_handle_t adapter_handle;
+ struct mana_ib_adapter_caps adapter_caps;
struct xarray rq_to_qp_lookup_table;
};
@@ -96,6 +118,7 @@ struct mana_ib_rwq_ind_table {
};
enum mana_ib_command_code {
+ MANA_IB_GET_ADAPTER_CAP = 0x30001,
MANA_IB_CREATE_ADAPTER = 0x30002,
MANA_IB_DESTROY_ADAPTER = 0x30003,
};
@@ -120,6 +143,32 @@ struct mana_ib_destroy_adapter_resp {
struct gdma_resp_hdr hdr;
}; /* HW Data */
+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_wqe_size;
+ u32 max_recv_wqe_size;
+ 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);
@@ -193,4 +242,6 @@ int mana_ib_create_adapter(struct mana_ib_dev *mdev);
int mana_ib_destroy_adapter(struct mana_ib_dev *mdev);
+int mana_ib_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 7ff9c8364551..7211e93d999c 100644
--- a/drivers/infiniband/hw/mana/qp.c
+++ b/drivers/infiniband/hw/mana/qp.c
@@ -130,7 +130,8 @@ 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_requester_sq_size) {
ibdev_dbg(&mdev->ib_dev,
"Requested max_recv_wr %d exceeding limit\n",
attr->cap.max_recv_wr);
@@ -302,7 +303,8 @@ 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_requester_sq_size) {
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 e32c75639557..c1850ec7faae 100644
--- a/include/net/mana/gdma.h
+++ b/include/net/mana/gdma.h
@@ -155,6 +155,7 @@ 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;
--
2.34.1
From: Long Li <[email protected]>
Before the software can create an RDMA adapter handle with SoC, it needs to
create EQs for processing SoC events from RDMA device. Because MSI-X
vectors are shared between MANA Ethernet device and RDMA device, this
patch adds support to share EQs on MSI-X vectors and creates management
EQ for RDMA device.
Signed-off-by: Long Li <[email protected]>
---
drivers/infiniband/hw/mana/device.c | 13 ++
drivers/infiniband/hw/mana/main.c | 52 +++++++
drivers/infiniband/hw/mana/mana_ib.h | 4 +
drivers/infiniband/hw/mana/qp.c | 15 ++
.../net/ethernet/microsoft/mana/gdma_main.c | 147 ++++++++++--------
drivers/net/ethernet/microsoft/mana/mana_en.c | 3 +
include/net/mana/gdma.h | 14 +-
7 files changed, 180 insertions(+), 68 deletions(-)
diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c
index ee29ddf36cf3..3da4763e1a0c 100644
--- a/drivers/infiniband/hw/mana/device.c
+++ b/drivers/infiniband/hw/mana/device.c
@@ -85,6 +85,14 @@ static int mana_ib_probe(struct auxiliary_device *adev,
}
dev->gdma_dev = &mdev->gdma_context->mana_ib;
+ xa_init(&dev->rq_to_qp_lookup_table);
+
+ ret = mana_ib_create_error_eq(dev);
+ if (ret) {
+ ibdev_err(&dev->ib_dev, "Failed to allocate err eq");
+ goto deregister_device;
+ }
+
if (ret) {
ib_dealloc_device(&dev->ib_dev);
return ret;
@@ -100,6 +108,9 @@ static int mana_ib_probe(struct auxiliary_device *adev,
return 0;
destroy_adapter:
+ mana_gd_destroy_queue(dev->gdma_dev->gdma_context, dev->fatal_err_eq);
+ xa_destroy(&dev->rq_to_qp_lookup_table);
+deregister_device:
mana_gd_deregister_device(dev->gdma_dev);
free_ib_device:
ib_dealloc_device(&dev->ib_dev);
@@ -112,6 +123,8 @@ static void mana_ib_remove(struct auxiliary_device *adev)
ib_unregister_device(&dev->ib_dev);
+ mana_gd_destroy_queue(dev->gdma_dev->gdma_context, dev->fatal_err_eq);
+ xa_destroy(&dev->rq_to_qp_lookup_table);
mana_gd_deregister_device(dev->gdma_dev);
ib_dealloc_device(&dev->ib_dev);
diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c
index 53730306ed9b..032f926bf1ab 100644
--- a/drivers/infiniband/hw/mana/main.c
+++ b/drivers/infiniband/hw/mana/main.c
@@ -521,3 +521,55 @@ int mana_ib_query_gid(struct ib_device *ibdev, u32 port, int index,
void mana_ib_disassociate_ucontext(struct ib_ucontext *ibcontext)
{
}
+
+static void mana_ib_critical_event_handler(void *ctx, struct gdma_queue *queue,
+ struct gdma_event *event)
+{
+ struct mana_ib_dev *dev = (struct mana_ib_dev *)ctx;
+ struct ib_event mib_event;
+ struct mana_ib_qp *qp;
+ u64 rq_id;
+
+ switch (event->type) {
+ case GDMA_EQE_SOC_EVENT_NOTIFICATION:
+ rq_id = event->details[0] & 0xFFFFFF;
+ qp = xa_load(&dev->rq_to_qp_lookup_table, rq_id);
+ mib_event.event = IB_EVENT_QP_FATAL;
+ mib_event.device = &dev->ib_dev;
+ if (qp && qp->ibqp.event_handler)
+ qp->ibqp.event_handler(&mib_event, qp->ibqp.qp_context);
+ else
+ ibdev_dbg(&dev->ib_dev, "found no qp or event handler");
+ ibdev_dbg(&dev->ib_dev, "Received critical notification");
+ break;
+ default:
+ ibdev_dbg(&dev->ib_dev, "Received unsolicited evt %d",
+ event->type);
+ }
+}
+
+int mana_ib_create_error_eq(struct mana_ib_dev *dev)
+{
+ struct gdma_queue_spec spec = {};
+ int err;
+
+ spec.type = GDMA_EQ;
+ spec.monitor_avl_buf = false;
+ spec.queue_size = EQ_SIZE;
+ spec.eq.callback = mana_ib_critical_event_handler;
+ spec.eq.context = dev;
+ spec.eq.log2_throttle_limit = LOG2_EQ_THROTTLE;
+ spec.eq.msix_allocated = true;
+ spec.eq.msix_index = 0;
+ spec.doorbell = dev->gdma_dev->doorbell;
+ spec.pdid = dev->gdma_dev->pdid;
+
+ err = mana_gd_create_mana_eq(dev->gdma_dev, &spec,
+ &dev->fatal_err_eq);
+ if (err)
+ return err;
+
+ dev->fatal_err_eq->eq.disable_needed = true;
+
+ return 0;
+}
diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h
index 502cc8672eef..a5577c119def 100644
--- a/drivers/infiniband/hw/mana/mana_ib.h
+++ b/drivers/infiniband/hw/mana/mana_ib.h
@@ -30,6 +30,8 @@
struct mana_ib_dev {
struct ib_device ib_dev;
struct gdma_dev *gdma_dev;
+ struct gdma_queue *fatal_err_eq;
+ struct xarray rq_to_qp_lookup_table;
};
struct mana_ib_wq {
@@ -159,4 +161,6 @@ 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_create_error_eq(struct mana_ib_dev *mdev);
+
#endif
diff --git a/drivers/infiniband/hw/mana/qp.c b/drivers/infiniband/hw/mana/qp.c
index ae45d28eef5e..7ff9c8364551 100644
--- a/drivers/infiniband/hw/mana/qp.c
+++ b/drivers/infiniband/hw/mana/qp.c
@@ -211,6 +211,11 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd,
wq->id = wq_spec.queue_index;
cq->id = cq_spec.queue_index;
+ ret = xa_err(xa_store(&mdev->rq_to_qp_lookup_table,
+ wq->id, qp, GFP_KERNEL));
+ if (ret)
+ goto fail;
+
ibdev_dbg(&mdev->ib_dev,
"ret %d rx_object 0x%llx wq id %llu cq id %llu\n",
ret, wq->rx_object, wq->id, cq->id);
@@ -246,6 +251,7 @@ static int mana_ib_create_qp_rss(struct ib_qp *ibqp, struct ib_pd *pd,
while (i-- > 0) {
ibwq = ind_tbl->ind_tbl[i];
wq = container_of(ibwq, struct mana_ib_wq, ibwq);
+ xa_erase(&mdev->rq_to_qp_lookup_table, wq->id);
mana_destroy_wq_obj(mpc, GDMA_RQ, wq->rx_object);
}
@@ -372,6 +378,11 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd,
qp->sq_id = wq_spec.queue_index;
send_cq->id = cq_spec.queue_index;
+ err = xa_err(xa_store(&mdev->rq_to_qp_lookup_table,
+ qp->sq_id, qp, GFP_KERNEL));
+ if (err)
+ goto err_destroy_wq_obj;
+
ibdev_dbg(&mdev->ib_dev,
"ret %d qp->tx_object 0x%llx sq id %llu cq id %llu\n", err,
qp->tx_object, qp->sq_id, send_cq->id);
@@ -388,9 +399,11 @@ static int mana_ib_create_qp_raw(struct ib_qp *ibqp, struct ib_pd *ibpd,
goto err_destroy_wq_obj;
}
+
return 0;
err_destroy_wq_obj:
+ xa_erase(&mdev->rq_to_qp_lookup_table, qp->sq_id);
mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object);
err_destroy_dma_region:
@@ -455,6 +468,7 @@ static int mana_ib_destroy_qp_rss(struct mana_ib_qp *qp,
wq = container_of(ibwq, struct mana_ib_wq, ibwq);
ibdev_dbg(&mdev->ib_dev, "destroying wq->rx_object %llu\n",
wq->rx_object);
+ xa_erase(&mdev->rq_to_qp_lookup_table, wq->id);
mana_destroy_wq_obj(mpc, GDMA_RQ, wq->rx_object);
}
@@ -477,6 +491,7 @@ static int mana_ib_destroy_qp_raw(struct mana_ib_qp *qp, struct ib_udata *udata)
mpc = netdev_priv(ndev);
pd = container_of(ibpd, struct mana_ib_pd, ibpd);
+ xa_erase(&mdev->rq_to_qp_lookup_table, qp->sq_id);
mana_destroy_wq_obj(mpc, GDMA_SQ, qp->tx_object);
if (qp->sq_umem) {
diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
index 02e50ed632ee..f368056d0b0b 100644
--- a/drivers/net/ethernet/microsoft/mana/gdma_main.c
+++ b/drivers/net/ethernet/microsoft/mana/gdma_main.c
@@ -204,7 +204,8 @@ void mana_gd_free_memory(struct gdma_mem_info *gmi)
}
static int mana_gd_create_hw_eq(struct gdma_context *gc,
- struct gdma_queue *queue)
+ struct gdma_queue *queue,
+ u32 doorbell, u32 pdid)
{
struct gdma_create_queue_resp resp = {};
struct gdma_create_queue_req req = {};
@@ -218,8 +219,8 @@ static int mana_gd_create_hw_eq(struct gdma_context *gc,
req.hdr.dev_id = queue->gdma_dev->dev_id;
req.type = queue->type;
- req.pdid = queue->gdma_dev->pdid;
- req.doolbell_id = queue->gdma_dev->doorbell;
+ req.pdid = pdid;
+ req.doolbell_id = doorbell;
req.gdma_region = queue->mem_info.dma_region_handle;
req.queue_size = queue->queue_size;
req.log2_throttle_limit = queue->eq.log2_throttle_limit;
@@ -393,53 +394,51 @@ static void mana_gd_process_eqe(struct gdma_queue *eq)
}
}
-static void mana_gd_process_eq_events(void *arg)
+static void mana_gd_process_eq_events(struct list_head *eq_list)
{
u32 owner_bits, new_bits, old_bits;
union gdma_eqe_info eqe_info;
struct gdma_eqe *eq_eqe_ptr;
- struct gdma_queue *eq = arg;
struct gdma_context *gc;
+ struct gdma_queue *eq;
struct gdma_eqe *eqe;
u32 head, num_eqe;
int i;
- gc = eq->gdma_dev->gdma_context;
-
- num_eqe = eq->queue_size / GDMA_EQE_SIZE;
- eq_eqe_ptr = eq->queue_mem_ptr;
-
- /* Process up to 5 EQEs at a time, and update the HW head. */
- for (i = 0; i < 5; i++) {
- eqe = &eq_eqe_ptr[eq->head % num_eqe];
- eqe_info.as_uint32 = eqe->eqe_info;
- owner_bits = eqe_info.owner_bits;
-
- old_bits = (eq->head / num_eqe - 1) & GDMA_EQE_OWNER_MASK;
- /* No more entries */
- if (owner_bits == old_bits)
- break;
-
- new_bits = (eq->head / num_eqe) & GDMA_EQE_OWNER_MASK;
- if (owner_bits != new_bits) {
- dev_err(gc->dev, "EQ %d: overflow detected\n", eq->id);
- break;
+ list_for_each_entry_rcu(eq, eq_list, entry) {
+ gc = eq->gdma_dev->gdma_context;
+
+ num_eqe = eq->queue_size / GDMA_EQE_SIZE;
+ eq_eqe_ptr = eq->queue_mem_ptr;
+ /* Process up to 5 EQEs at a time, and update the HW head. */
+ for (i = 0; i < 5; i++) {
+ eqe = &eq_eqe_ptr[eq->head % num_eqe];
+ eqe_info.as_uint32 = eqe->eqe_info;
+ owner_bits = eqe_info.owner_bits;
+
+ old_bits = (eq->head / num_eqe - 1) & GDMA_EQE_OWNER_MASK;
+ /* No more entries */
+ if (owner_bits == old_bits)
+ break;
+
+ new_bits = (eq->head / num_eqe) & GDMA_EQE_OWNER_MASK;
+ if (owner_bits != new_bits) {
+ dev_err(gc->dev, "EQ %d: overflow detected\n",
+ eq->id);
+ break;
+ }
+ /* Per GDMA spec, rmb is necessary after checking owner_bits, before
+ * reading eqe.
+ */
+ rmb();
+ mana_gd_process_eqe(eq);
+ eq->head++;
}
- /* Per GDMA spec, rmb is necessary after checking owner_bits, before
- * reading eqe.
- */
- rmb();
-
- mana_gd_process_eqe(eq);
-
- eq->head++;
+ head = eq->head % (num_eqe << GDMA_EQE_OWNER_BITS);
+ mana_gd_ring_doorbell(gc, eq->gdma_dev->doorbell, eq->type,
+ eq->id, head, SET_ARM_BIT);
}
-
- head = eq->head % (num_eqe << GDMA_EQE_OWNER_BITS);
-
- mana_gd_ring_doorbell(gc, eq->gdma_dev->doorbell, eq->type, eq->id,
- head, SET_ARM_BIT);
}
static int mana_gd_register_irq(struct gdma_queue *queue,
@@ -457,45 +456,48 @@ static int mana_gd_register_irq(struct gdma_queue *queue,
gc = gd->gdma_context;
r = &gc->msix_resource;
dev = gc->dev;
+ msi_index = spec->eq.msix_index;
spin_lock_irqsave(&r->lock, flags);
- msi_index = find_first_zero_bit(r->map, r->size);
- if (msi_index >= r->size || msi_index >= gc->num_msix_usable) {
- err = -ENOSPC;
- } else {
- bitmap_set(r->map, msi_index, 1);
- queue->eq.msix_index = msi_index;
- }
-
- spin_unlock_irqrestore(&r->lock, flags);
+ if (!spec->eq.msix_allocated) {
+ msi_index = find_first_zero_bit(r->map, r->size);
- if (err) {
- dev_err(dev, "Register IRQ err:%d, msi:%u rsize:%u, nMSI:%u",
- err, msi_index, r->size, gc->num_msix_usable);
+ if (msi_index >= r->size ||
+ msi_index >= gc->num_msix_usable)
+ err = -ENOSPC;
+ else
+ bitmap_set(r->map, msi_index, 1);
- return err;
+ if (err) {
+ dev_err(dev, "Register IRQ err:%d, msi:%u rsize:%u, nMSI:%u",
+ err, msi_index, r->size, gc->num_msix_usable);
+ goto out;
+ }
}
+ queue->eq.msix_index = msi_index;
gic = &gc->irq_contexts[msi_index];
- WARN_ON(gic->handler || gic->arg);
-
- gic->arg = queue;
+ list_add_rcu(&queue->entry, &gic->eq_list);
gic->handler = mana_gd_process_eq_events;
- return 0;
+out:
+ spin_unlock_irqrestore(&r->lock, flags);
+ return err;
}
-static void mana_gd_deregiser_irq(struct gdma_queue *queue)
+static void mana_gd_deregister_irq(struct gdma_queue *queue)
{
struct gdma_dev *gd = queue->gdma_dev;
struct gdma_irq_context *gic;
struct gdma_context *gc;
struct gdma_resource *r;
unsigned int msix_index;
+ struct gdma_queue *eq;
unsigned long flags;
+ struct list_head *p;
gc = gd->gdma_context;
r = &gc->msix_resource;
@@ -505,14 +507,24 @@ static void mana_gd_deregiser_irq(struct gdma_queue *queue)
if (WARN_ON(msix_index >= gc->num_msix_usable))
return;
+ spin_lock_irqsave(&r->lock, flags);
+
gic = &gc->irq_contexts[msix_index];
- gic->handler = NULL;
- gic->arg = NULL;
+ list_for_each_rcu(p, &gic->eq_list) {
+ eq = list_entry(p, struct gdma_queue, entry);
+ if (queue == eq) {
+ list_del(&eq->entry);
+ synchronize_rcu();
+ break;
+ }
+ }
- spin_lock_irqsave(&r->lock, flags);
- bitmap_clear(r->map, msix_index, 1);
- spin_unlock_irqrestore(&r->lock, flags);
+ if (list_empty(&gic->eq_list)) {
+ gic->handler = NULL;
+ bitmap_clear(r->map, msix_index, 1);
+ }
+ spin_unlock_irqrestore(&r->lock, flags);
queue->eq.msix_index = INVALID_PCI_MSIX_INDEX;
}
@@ -575,7 +587,7 @@ static void mana_gd_destroy_eq(struct gdma_context *gc, bool flush_evenets,
dev_warn(gc->dev, "Failed to flush EQ: %d\n", err);
}
- mana_gd_deregiser_irq(queue);
+ mana_gd_deregister_irq(queue);
if (queue->eq.disable_needed)
mana_gd_disable_queue(queue);
@@ -590,7 +602,7 @@ static int mana_gd_create_eq(struct gdma_dev *gd,
u32 log2_num_entries;
int err;
- queue->eq.msix_index = INVALID_PCI_MSIX_INDEX;
+ queue->eq.msix_index = spec->eq.msix_index;
log2_num_entries = ilog2(queue->queue_size / GDMA_EQE_SIZE);
@@ -612,7 +624,8 @@ static int mana_gd_create_eq(struct gdma_dev *gd,
queue->eq.log2_throttle_limit = spec->eq.log2_throttle_limit ?: 1;
if (create_hwq) {
- err = mana_gd_create_hw_eq(gc, queue);
+ err = mana_gd_create_hw_eq(gc, queue,
+ spec->doorbell, spec->pdid);
if (err)
goto out;
@@ -822,6 +835,7 @@ int mana_gd_create_mana_eq(struct gdma_dev *gd,
kfree(queue);
return err;
}
+EXPORT_SYMBOL(mana_gd_create_mana_eq);
int mana_gd_create_mana_wq_cq(struct gdma_dev *gd,
const struct gdma_queue_spec *spec,
@@ -898,6 +912,7 @@ void mana_gd_destroy_queue(struct gdma_context *gc, struct gdma_queue *queue)
mana_gd_free_memory(gmi);
kfree(queue);
}
+EXPORT_SYMBOL(mana_gd_destroy_queue);
int mana_gd_verify_vf_version(struct pci_dev *pdev)
{
@@ -1224,7 +1239,7 @@ static irqreturn_t mana_gd_intr(int irq, void *arg)
struct gdma_irq_context *gic = arg;
if (gic->handler)
- gic->handler(gic->arg);
+ gic->handler(&gic->eq_list);
return IRQ_HANDLED;
}
@@ -1277,7 +1292,7 @@ static int mana_gd_setup_irqs(struct pci_dev *pdev)
for (i = 0; i < nvec; i++) {
gic = &gc->irq_contexts[i];
gic->handler = NULL;
- gic->arg = NULL;
+ INIT_LIST_HEAD(&gic->eq_list);
if (!i)
snprintf(gic->name, MANA_IRQ_NAME_SZ, "mana_hwc@pci:%s",
diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index fc3d2903a80f..abf63f405940 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -1242,6 +1242,9 @@ static int mana_create_eq(struct mana_context *ac)
spec.eq.callback = NULL;
spec.eq.context = ac->eqs;
spec.eq.log2_throttle_limit = LOG2_EQ_THROTTLE;
+ spec.eq.msix_allocated = false;
+ spec.doorbell = gd->doorbell;
+ spec.pdid = gd->pdid;
for (i = 0; i < gc->max_num_queues; i++) {
err = mana_gd_create_mana_eq(gd, &spec, &ac->eqs[i].eq);
diff --git a/include/net/mana/gdma.h b/include/net/mana/gdma.h
index 000f0d7670f7..e32c75639557 100644
--- a/include/net/mana/gdma.h
+++ b/include/net/mana/gdma.h
@@ -60,6 +60,11 @@ enum gdma_eqe_type {
GDMA_EQE_HWC_INIT_DONE = 131,
GDMA_EQE_HWC_SOC_RECONFIG = 132,
GDMA_EQE_HWC_SOC_RECONFIG_DATA = 133,
+
+ /* RDMA SOC Events */
+ GDMA_EQE_SOC_EVENT_NOTIFICATION = 176,
+ GDMA_EQE_SOC_EVENT_TEST = 177,
+
};
enum {
@@ -294,6 +299,7 @@ struct gdma_queue {
u32 head;
u32 tail;
+ struct list_head entry;
/* Extra fields specific to EQ/CQ. */
union {
@@ -321,6 +327,8 @@ struct gdma_queue_spec {
enum gdma_queue_type type;
bool monitor_avl_buf;
unsigned int queue_size;
+ u32 doorbell;
+ u32 pdid;
/* Extra fields specific to EQ/CQ. */
union {
@@ -329,6 +337,8 @@ struct gdma_queue_spec {
void *context;
unsigned long log2_throttle_limit;
+ bool msix_allocated;
+ unsigned int msix_index;
} eq;
struct {
@@ -344,8 +354,8 @@ struct gdma_queue_spec {
#define MANA_IRQ_NAME_SZ 32
struct gdma_irq_context {
- void (*handler)(void *arg);
- void *arg;
+ void (*handler)(struct list_head *arg);
+ struct list_head eq_list;
char name[MANA_IRQ_NAME_SZ];
};
--
2.34.1
On Wed, Nov 22, 2023 at 07:10:08PM -0800, [email protected] wrote:
> From: Long Li <[email protected]>
>
> Before the software can create an RDMA adapter handle with SoC, it needs to
> create EQs for processing SoC events from RDMA device. Because MSI-X
> vectors are shared between MANA Ethernet device and RDMA device, this
> patch adds support to share EQs on MSI-X vectors and creates management
> EQ for RDMA device.
>
> Signed-off-by: Long Li <[email protected]>
...
> diff --git a/drivers/net/ethernet/microsoft/mana/gdma_main.c b/drivers/net/ethernet/microsoft/mana/gdma_main.c
...
> -static void mana_gd_deregiser_irq(struct gdma_queue *queue)
> +static void mana_gd_deregister_irq(struct gdma_queue *queue)
> {
> struct gdma_dev *gd = queue->gdma_dev;
> struct gdma_irq_context *gic;
> struct gdma_context *gc;
> struct gdma_resource *r;
> unsigned int msix_index;
> + struct gdma_queue *eq;
> unsigned long flags;
> + struct list_head *p;
>
> gc = gd->gdma_context;
> r = &gc->msix_resource;
> @@ -505,14 +507,24 @@ static void mana_gd_deregiser_irq(struct gdma_queue *queue)
> if (WARN_ON(msix_index >= gc->num_msix_usable))
> return;
>
> + spin_lock_irqsave(&r->lock, flags);
> +
> gic = &gc->irq_contexts[msix_index];
> - gic->handler = NULL;
> - gic->arg = NULL;
> + list_for_each_rcu(p, &gic->eq_list) {
> + eq = list_entry(p, struct gdma_queue, entry);
Hi Long Li,
Sparse complains a bit about this construction:
.../gdma_main.c:513:9: error: incompatible types in comparison expression (different address spaces):
.../gdma_main.c:513:9: struct list_head [noderef] __rcu *
.../gdma_main.c:513:9: struct list_head *
.../gdma_main.c:513:9: error: incompatible types in comparison expression (different address spaces):
.../gdma_main.c:513:9: struct list_head [noderef] __rcu *
.../gdma_main.c:513:9: struct list_head *
Perhaps using list_for_each_entry_rcu() is appropriate here.
> + if (queue == eq) {
> + list_del(&eq->entry);
> + synchronize_rcu();
> + break;
> + }
> + }
>
> - spin_lock_irqsave(&r->lock, flags);
> - bitmap_clear(r->map, msix_index, 1);
> - spin_unlock_irqrestore(&r->lock, flags);
> + if (list_empty(&gic->eq_list)) {
> + gic->handler = NULL;
> + bitmap_clear(r->map, msix_index, 1);
> + }
>
> + spin_unlock_irqrestore(&r->lock, flags);
> queue->eq.msix_index = INVALID_PCI_MSIX_INDEX;
> }
>
...
> > @@ -505,14 +507,24 @@ static void mana_gd_deregiser_irq(struct
> gdma_queue *queue)
> > if (WARN_ON(msix_index >= gc->num_msix_usable))
> > return;
> >
> > + spin_lock_irqsave(&r->lock, flags);
> > +
> > gic = &gc->irq_contexts[msix_index];
> > - gic->handler = NULL;
> > - gic->arg = NULL;
> > + list_for_each_rcu(p, &gic->eq_list) {
> > + eq = list_entry(p, struct gdma_queue, entry);
>
> Hi Long Li,
>
> Sparse complains a bit about this construction:
>
> .../gdma_main.c:513:9: error: incompatible types in comparison expression
> (different address spaces):
> .../gdma_main.c:513:9: struct list_head [noderef] __rcu *
> .../gdma_main.c:513:9: struct list_head *
> .../gdma_main.c:513:9: error: incompatible types in comparison expression
> (different address spaces):
> .../gdma_main.c:513:9: struct list_head [noderef] __rcu *
> .../gdma_main.c:513:9: struct list_head *
>
> Perhaps using list_for_each_entry_rcu() is appropriate here.
Thank you, I will fix this.
Long