drm-shim: return device platform as specified
[mesa.git] / src / drm-shim / drm_shim.h
1 /*
2 * Copyright © 2018 Broadcom
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
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 */
23
24 #include "util/macros.h"
25 #include "util/hash_table.h"
26
27 #include <xf86drm.h>
28
29 #ifdef __linux__
30 #define DRM_MAJOR 226
31 #endif
32
33 typedef int (*ioctl_fn_t)(int fd, unsigned long request, void *arg);
34
35 struct shim_bo;
36
37 struct shim_device {
38 /* Mapping from int fd to struct shim_fd *. */
39 struct hash_table *fd_map;
40
41 int (**driver_ioctls)(int fd, unsigned long request, void *arg);
42 int driver_ioctl_count;
43
44 void (*driver_bo_free)(struct shim_bo *bo);
45
46 /* Returned by drmGetVersion(). */
47 const char *driver_name;
48 int version_major, version_minor, version_patchlevel;
49 int bus_type;
50 };
51
52 extern struct shim_device shim_device;
53
54 struct shim_fd {
55 int fd;
56 /* mapping from int gem handle to struct shim_bo *. */
57 struct hash_table *handles;
58 };
59
60 struct shim_bo {
61 int fd;
62 void *map;
63 int refcount;
64 uint32_t size;
65 };
66
67 /* Core support. */
68 extern int render_node_minor;
69 void drm_shim_device_init(void);
70 void drm_shim_override_file(const char *contents,
71 const char *path_format, ...) PRINTFLIKE(2, 3);
72 void drm_shim_fd_register(int fd, struct shim_fd *shim_fd);
73 struct shim_fd *drm_shim_fd_lookup(int fd);
74 int drm_shim_ioctl(int fd, unsigned long request, void *arg);
75 void *drm_shim_mmap(struct shim_fd *shim_fd, size_t length, int prot, int flags,
76 int fd, off_t offset);
77
78 void drm_shim_bo_init(struct shim_bo *bo, size_t size);
79 void drm_shim_bo_get(struct shim_bo *bo);
80 void drm_shim_bo_put(struct shim_bo *bo);
81 struct shim_bo *drm_shim_bo_lookup(struct shim_fd *shim_fd, int handle);
82 int drm_shim_bo_get_handle(struct shim_fd *shim_fd, struct shim_bo *bo);
83 uint64_t drm_shim_bo_get_mmap_offset(struct shim_fd *shim_fd,
84 struct shim_bo *bo);
85
86 /* driver-specific hooks. */
87 void drm_shim_driver_init(void);