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mlx5: Fix missing device local_dma_lkey 

The mlx5 driver exposes device capability IB_DEVICE_LOCAL_DMA_LKEY
but does not set the the device local_dma_lkey. This breaks
rpcrdma drivers.

Query and set this lkey when creating the device resources.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sagi Grimberg 2015-07-20 19:54:36 +03:00 committed by Doug Ledford
parent c13dcf9f2d
commit a3c874200c
4 changed files with 42 additions and 1 deletions
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9
drivers/infiniband/hw/mlx5/main.c
View File

@ -1256,10 +1256,18 @@ static int create_dev_resources(struct mlx5_ib_resources *devr)
struct ib_srq_init_attr attr;
struct mlx5_ib_dev *dev;
struct ib_cq_init_attr cq_attr = {.cqe = 1};
u32 rsvd_lkey;
int ret = 0;
dev = container_of(devr, struct mlx5_ib_dev, devr);
ret = mlx5_core_query_special_context(dev->mdev, &rsvd_lkey);
if (ret) {
pr_err("Failed to query special context %d\n", ret);
return ret;
}
dev->ib_dev.local_dma_lkey = rsvd_lkey;
devr->p0 = mlx5_ib_alloc_pd(&dev->ib_dev, NULL, NULL);
if (IS_ERR(devr->p0)) {
ret = PTR_ERR(devr->p0);
@ -1421,7 +1429,6 @@ static void *mlx5_ib_add(struct mlx5_core_dev *mdev)
strlcpy(dev->ib_dev.name, "mlx5_%d", IB_DEVICE_NAME_MAX);
dev->ib_dev.owner = THIS_MODULE;
dev->ib_dev.node_type = RDMA_NODE_IB_CA;
dev->ib_dev.local_dma_lkey = 0 /* not supported for now */;
dev->num_ports = MLX5_CAP_GEN(mdev, num_ports);
dev->ib_dev.phys_port_cnt = dev->num_ports;
dev->ib_dev.num_comp_vectors =

22
drivers/net/ethernet/mellanox/mlx5/core/fw.c
View File

@ -200,3 +200,25 @@ int mlx5_cmd_teardown_hca(struct mlx5_core_dev *dev)
return err;
}
int mlx5_core_query_special_context(struct mlx5_core_dev *dev, u32 *rsvd_lkey)
{
struct mlx5_cmd_query_special_contexts_mbox_in in;
struct mlx5_cmd_query_special_contexts_mbox_out out;
int err;
memset(&in, 0, sizeof(in));
memset(&out, 0, sizeof(out));
in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS);
err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
if (err)
return err;
if (out.hdr.status)
err = mlx5_cmd_status_to_err(&out.hdr);
*rsvd_lkey = be32_to_cpu(out.resd_lkey);
return err;
}
EXPORT_SYMBOL(mlx5_core_query_special_context);

11
include/linux/mlx5/device.h
View File

@ -402,6 +402,17 @@ struct mlx5_cmd_teardown_hca_mbox_out {
u8 rsvd[8];
};
struct mlx5_cmd_query_special_contexts_mbox_in {
struct mlx5_inbox_hdr hdr;
u8 rsvd[8];
};
struct mlx5_cmd_query_special_contexts_mbox_out {
struct mlx5_outbox_hdr hdr;
__be32 dump_fill_mkey;
__be32 resd_lkey;
};
struct mlx5_cmd_layout {
u8 type;
u8 rsvd0[3];

1
include/linux/mlx5/driver.h
View File

@ -828,6 +828,7 @@ void *mlx5_get_protocol_dev(struct mlx5_core_dev *mdev, int protocol);
int mlx5_register_interface(struct mlx5_interface *intf);
void mlx5_unregister_interface(struct mlx5_interface *intf);
int mlx5_core_query_vendor_id(struct mlx5_core_dev *mdev, u32 *vendor_id);
int mlx5_core_query_special_context(struct mlx5_core_dev *dev, u32 *rsvd_lkey);
struct mlx5_profile {
u64 mask;