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
34 extern "C" {
35 #endif
36 
37 struct __DRIextensionRec;
38 
39 /* Helpers to figure out driver and device name, eg. from pci-id, etc. */
40 
41 int
42 loader_open_device(const char *);
43 
44 int
45 loader_open_render_node(const char *name);
46 
47 char *
48 loader_get_render_node(dev_t device);
49 
50 bool
51 loader_get_pci_id_for_fd(int fd, int *vendor_id, int *chip_id);
52 
53 char *
54 loader_get_driver_for_fd(int fd);
55 
56 void *
57 loader_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 
63 const struct __DRIextensionRec **
64 loader_open_driver(const char *driver_name,
65                    void **out_driver_handle,
66                    const char **search_path_vars);
67 
68 char *
69 loader_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 
76 int
77 loader_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 
88 typedef void loader_logger(int level, const char *fmt, ...);
89 void
90 loader_set_logger(loader_logger *logger);
91 
92 char *
93 loader_get_extensions_name(const char *driver_name);
94 
95 #ifdef __cplusplus
96 }
97 #endif
98 
99 #endif /* LOADER_H */
100