diff options
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/cmd.c')
-rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 57 |
1 files changed, 52 insertions, 5 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c index e267ff93e8a8..be48c6440251 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c @@ -316,6 +316,7 @@ static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op, case MLX5_CMD_OP_DESTROY_GENERAL_OBJECT: case MLX5_CMD_OP_DEALLOC_MEMIC: case MLX5_CMD_OP_PAGE_FAULT_RESUME: + case MLX5_CMD_OP_QUERY_HOST_PARAMS: return MLX5_CMD_STAT_OK; case MLX5_CMD_OP_QUERY_HCA_CAP: @@ -627,6 +628,7 @@ const char *mlx5_command_str(int command) MLX5_COMMAND_STR_CASE(QUERY_MODIFY_HEADER_CONTEXT); MLX5_COMMAND_STR_CASE(ALLOC_MEMIC); MLX5_COMMAND_STR_CASE(DEALLOC_MEMIC); + MLX5_COMMAND_STR_CASE(QUERY_HOST_PARAMS); default: return "unknown command opcode"; } } @@ -1729,12 +1731,57 @@ int mlx5_cmd_exec(struct mlx5_core_dev *dev, void *in, int in_size, void *out, } EXPORT_SYMBOL(mlx5_cmd_exec); -int mlx5_cmd_exec_cb(struct mlx5_core_dev *dev, void *in, int in_size, - void *out, int out_size, mlx5_cmd_cbk_t callback, - void *context) +void mlx5_cmd_init_async_ctx(struct mlx5_core_dev *dev, + struct mlx5_async_ctx *ctx) { - return cmd_exec(dev, in, in_size, out, out_size, callback, context, - false); + ctx->dev = dev; + /* Starts at 1 to avoid doing wake_up if we are not cleaning up */ + atomic_set(&ctx->num_inflight, 1); + init_waitqueue_head(&ctx->wait); +} +EXPORT_SYMBOL(mlx5_cmd_init_async_ctx); + +/** + * mlx5_cmd_cleanup_async_ctx - Clean up an async_ctx + * @ctx: The ctx to clean + * + * Upon return all callbacks given to mlx5_cmd_exec_cb() have been called. The + * caller must ensure that mlx5_cmd_exec_cb() is not called during or after + * the call mlx5_cleanup_async_ctx(). + */ +void mlx5_cmd_cleanup_async_ctx(struct mlx5_async_ctx *ctx) +{ + atomic_dec(&ctx->num_inflight); + wait_event(ctx->wait, atomic_read(&ctx->num_inflight) == 0); +} +EXPORT_SYMBOL(mlx5_cmd_cleanup_async_ctx); + +static void mlx5_cmd_exec_cb_handler(int status, void *_work) +{ + struct mlx5_async_work *work = _work; + struct mlx5_async_ctx *ctx = work->ctx; + + work->user_callback(status, work); + if (atomic_dec_and_test(&ctx->num_inflight)) + wake_up(&ctx->wait); +} + +int mlx5_cmd_exec_cb(struct mlx5_async_ctx *ctx, void *in, int in_size, + void *out, int out_size, mlx5_async_cbk_t callback, + struct mlx5_async_work *work) +{ + int ret; + + work->ctx = ctx; + work->user_callback = callback; + if (WARN_ON(!atomic_inc_not_zero(&ctx->num_inflight))) + return -EIO; + ret = cmd_exec(ctx->dev, in, in_size, out, out_size, + mlx5_cmd_exec_cb_handler, work, false); + if (ret && atomic_dec_and_test(&ctx->num_inflight)) + wake_up(&ctx->wait); + + return ret; } EXPORT_SYMBOL(mlx5_cmd_exec_cb); |