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| author | Meir Lichtinger <meirl@nvidia.com> | 2021-09-22 11:28:51 +0300 |
|---|---|---|
| committer | Leon Romanovsky <leonro@nvidia.com> | 2021-09-28 18:31:21 +0300 |
| commit | d2c8a1554c10d5e0443b1f97f480d7dacd55cf55 (patch) | |
| tree | 606840f11348ca804b0da8e3e910a2bbe98e1047 /drivers/infiniband/hw/mlx5/cmd.c | |
| parent | 8de1e9b01b03d2805f58aa490ea5bf0df003bc80 (diff) | |
| download | linux-d2c8a1554c10d5e0443b1f97f480d7dacd55cf55.tar.bz2 | |
IB/mlx5: Enable UAR to have DevX UID
UID field was added to alloc_uar and dealloc_uar PRM command, to specify
DevX UID for UAR. This change enables firmware validating user access to
its own UAR resources.
For the kernel allocated UARs the UID will stay 0 as of today.
Signed-off-by: Meir Lichtinger <meirl@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/cmd.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/cmd.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/cmd.c b/drivers/infiniband/hw/mlx5/cmd.c index a8db8a051170..ff3742b0460a 100644 --- a/drivers/infiniband/hw/mlx5/cmd.c +++ b/drivers/infiniband/hw/mlx5/cmd.c @@ -206,3 +206,29 @@ out: kfree(in); return err; } + +int mlx5_cmd_uar_alloc(struct mlx5_core_dev *dev, u32 *uarn, u16 uid) +{ + u32 out[MLX5_ST_SZ_DW(alloc_uar_out)] = {}; + u32 in[MLX5_ST_SZ_DW(alloc_uar_in)] = {}; + int err; + + MLX5_SET(alloc_uar_in, in, opcode, MLX5_CMD_OP_ALLOC_UAR); + MLX5_SET(alloc_uar_in, in, uid, uid); + err = mlx5_cmd_exec_inout(dev, alloc_uar, in, out); + if (err) + return err; + + *uarn = MLX5_GET(alloc_uar_out, out, uar); + return 0; +} + +int mlx5_cmd_uar_dealloc(struct mlx5_core_dev *dev, u32 uarn, u16 uid) +{ + u32 in[MLX5_ST_SZ_DW(dealloc_uar_in)] = {}; + + MLX5_SET(dealloc_uar_in, in, opcode, MLX5_CMD_OP_DEALLOC_UAR); + MLX5_SET(dealloc_uar_in, in, uar, uarn); + MLX5_SET(dealloc_uar_in, in, uid, uid); + return mlx5_cmd_exec_in(dev, dealloc_uar, in); +} |