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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
View File

@ -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;
}

2
drivers/infiniband/hw/mlx5/cmd.h
View File

@ -61,4 +61,6 @@ int mlx5_cmd_detach_mcg(struct mlx5_core_dev *dev, union ib_gid *mgid,
u32 qpn, u16 uid);
int mlx5_cmd_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn, u16 uid);
int mlx5_cmd_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn, u16 uid);
int mlx5_cmd_alloc_q_counter(struct mlx5_core_dev *dev, u16 *counter_id,
u16 uid);
#endif /* MLX5_IB_CMD_H */

9
drivers/infiniband/hw/mlx5/main.c
View File

@ -5115,6 +5115,9 @@ static int mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev)
{
int err = 0;
int i;
bool is_shared;
is_shared = MLX5_CAP_GEN(dev->mdev, log_max_uctx) != 0;
for (i = 0; i < dev->num_ports; i++) {
err = __mlx5_ib_alloc_counters(dev, &dev->port[i].cnts);
@ -5124,8 +5127,10 @@ static int mlx5_ib_alloc_counters(struct mlx5_ib_dev *dev)
mlx5_ib_fill_counters(dev, dev->port[i].cnts.names,
dev->port[i].cnts.offsets);
err = mlx5_core_alloc_q_counter(dev->mdev,
&dev->port[i].cnts.set_id);
err = mlx5_cmd_alloc_q_counter(dev->mdev,
&dev->port[i].cnts.set_id,
is_shared ?
MLX5_SHARED_RESOURCE_UID : 0);
if (err) {
mlx5_ib_warn(dev,
"couldn't allocate queue counter for port %d, err %d\n",