xref: /third_party/mesa3d/src/loader/loader.h (revision bf215546) 
1/*
2 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 *    Rob Clark <robclark@freedesktop.org>
25 */
26
27#ifndef LOADER_H
28#define LOADER_H
29
30#include <stdbool.h>
31#include <sys/stat.h>
32
33#ifdef __cplusplus
34extern "C" {
35#endif
36
37struct __DRIextensionRec;
38
39/* Helpers to figure out driver and device name, eg. from pci-id, etc. */
40
41int
42loader_open_device(const char *device_name);
43
44int
45loader_open_render_node(const char *name);
46
47char *
48loader_get_render_node(dev_t device);
49
50bool
51loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id);
52
53char *
54loader_get_driver_for_fd(int fd);
55
56void *
57loader_open_driver_lib(const char *driver_name,
58                       const char *lib_suffix,
59                       const char **search_path_vars,
60                       const char *default_search_path,
61                       bool warn_on_fail);
62
63const struct __DRIextensionRec **
64loader_open_driver(const char *driver_name,
65                   void **out_driver_handle,
66                   const char **search_path_vars);
67
68char *
69loader_get_device_name_for_fd(int fd);
70
71/* Function to get a different device than the one we are to use by default,
72 * if the user requests so and it is possible. The initial fd will be closed
73 * if necessary. The returned fd is potentially a render-node.
74 */
75
76int
77loader_get_user_preferred_fd(int default_fd, bool *different_device);
78
79/* for logging.. keep this aligned with egllog.h so we can just use
80 * _eglLog directly.
81 */
82
83#define _LOADER_FATAL   0   /* unrecoverable error */
84#define _LOADER_WARNING 1   /* recoverable error/problem */
85#define _LOADER_INFO    2   /* just useful info */
86#define _LOADER_DEBUG   3   /* useful info for debugging */
87
88typedef void loader_logger(int level, const char *fmt, ...);
89void
90loader_set_logger(loader_logger *logger);
91
92char *
93loader_get_extensions_name(const char *driver_name);
94
95#ifdef __cplusplus
96}
97#endif
98
99#endif /* LOADER_H */
100