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IB/mlx5: Allocate the per-port Q counter shared when DEVX is supported

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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>
This commit is contained in:
Yishai Hadas
2018-12-09 12:52:36 +02:00
committed by Jason Gunthorpe
parent 75bf8a2a2f
commit aa74be6eea
3 changed files with 26 additions and 2 deletions
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17
drivers/infiniband/hw/mlx5/cmd.c
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@@ -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;
}