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net/mlx5: introduce shared UAR resource

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This is preparation step before moving the Tx queue creation
to the DevX approach. Some features require the shared UAR
for Tx queues and scheduling completion queues, the patch
manages the shared UAR.

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
Acked-by: Matan Azrad <matan@mellanox.com>
This commit is contained in:
Viacheslav Ovsiienko 2020-07-16 08:23:07 +00:00 committed by Ferruh Yigit
parent 24feb04596
commit fc4d4f732b
2 changed files with 15 additions and 0 deletions
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14
drivers/net/mlx5/mlx5.c
View File

@ -709,6 +709,12 @@ mlx5_alloc_shared_dev_ctx(const struct mlx5_dev_spawn_data *spawn,
err = ENOMEM;
goto error;
}
sh->tx_uar = mlx5_glue->devx_alloc_uar(sh->ctx, 0);
if (!sh->tx_uar) {
DRV_LOG(ERR, "Failed to allocate DevX UAR.");
err = ENOMEM;
goto error;
}
}
sh->flow_id_pool = mlx5_flow_id_pool_alloc
((1 << HAIRPIN_FLOW_ID_BITS) - 1);
@ -767,6 +773,10 @@ mlx5_alloc_shared_dev_ctx(const struct mlx5_dev_spawn_data *spawn,
mlx5_l3t_destroy(sh->cnt_id_tbl);
sh->cnt_id_tbl = NULL;
}
if (sh->tx_uar) {
mlx5_glue->devx_free_uar(sh->tx_uar);
sh->tx_uar = NULL;
}
if (sh->tis)
claim_zero(mlx5_devx_cmd_destroy(sh->tis));
if (sh->td)
@ -832,6 +842,10 @@ mlx5_free_shared_dev_ctx(struct mlx5_dev_ctx_shared *sh)
mlx5_l3t_destroy(sh->cnt_id_tbl);
sh->cnt_id_tbl = NULL;
}
if (sh->tx_uar) {
mlx5_glue->devx_free_uar(sh->tx_uar);
sh->tx_uar = NULL;
}
if (sh->pd)
claim_zero(mlx5_glue->dealloc_pd(sh->pd));
if (sh->tis)

1
drivers/net/mlx5/mlx5.h
View File

@ -586,6 +586,7 @@ struct mlx5_dev_ctx_shared {
struct mlx5_devx_obj *tis; /* TIS object. */
struct mlx5_devx_obj *td; /* Transport domain. */
struct mlx5_flow_id_pool *flow_id_pool; /* Flow ID pool. */
struct mlx5dv_devx_uar *tx_uar; /* Tx/packer pacing shared UAR. */
struct mlx5_dev_shared_port port[]; /* per device port data array. */
};