diff options
| author | Yishai Hadas <yishaih@mellanox.com> | 2018-12-09 12:52:36 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-12-21 12:15:07 -0700 |
| commit | aa74be6eeade1caf3ef945ff1812059f3d7dc947 (patch) | |
| tree | a929d5ffb6e8a325c82ca603772da96502346022 /drivers/infiniband/hw/mlx5/cmd.c | |
| parent | 75bf8a2a2f6b0def50009a631ea2f22f0143ba6c (diff) | |
IB/mlx5: Allocate the per-port Q counter shared when DEVX is supported
The per-port Q counter is some kernel resource and as such may be used by
few UID(s) upon DEVX usage.
To enable using it for QP/RQ when DEVX context is used need to allocate it
with a sharing mode indication to let firmware allows its usage.
The UID = 0xffff was chosen to mark it.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/cmd.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/cmd.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/cmd.c b/drivers/infiniband/hw/mlx5/cmd.c index 59d569c6a13a..356bccc715ee 100644 --- a/drivers/infiniband/hw/mlx5/cmd.c +++ b/drivers/infiniband/hw/mlx5/cmd.c @@ -328,3 +328,20 @@ int mlx5_cmd_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn, u16 uid) MLX5_SET(dealloc_xrcd_in, in, uid, uid); return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); } + +int mlx5_cmd_alloc_q_counter(struct mlx5_core_dev *dev, u16 *counter_id, + u16 uid) +{ + u32 in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {0}; + u32 out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {0}; + int err; + + MLX5_SET(alloc_q_counter_in, in, opcode, MLX5_CMD_OP_ALLOC_Q_COUNTER); + MLX5_SET(alloc_q_counter_in, in, uid, uid); + + err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out)); + if (!err) + *counter_id = MLX5_GET(alloc_q_counter_out, out, + counter_set_id); + return err; +} |