xref: /OK3568_Linux_fs/external/xserver/include/hotplug.h (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1 /*
2  * Copyright © 2006-2007 Daniel Stone
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  * Author: Daniel Stone <daniel@fooishbar.org>
24  */
25 
26 #ifndef HOTPLUG_H
27 #define HOTPLUG_H
28 
29 #include "list.h"
30 
31 extern _X_EXPORT void config_pre_init(void);
32 extern _X_EXPORT void config_init(void);
33 extern _X_EXPORT void config_fini(void);
34 
35 /* Bump this each time you add something to the struct
36  * so that drivers can easily tell what is available
37  */
38 #define ODEV_ATTRIBUTES_VERSION         1
39 
40 struct OdevAttributes {
41     /* path to kernel device node - Linux e.g. /dev/dri/card0 */
42     char        *path;
43 
44     /* system device path - Linux e.g. /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1 */
45     char        *syspath;
46 
47     /* DRI-style bus id */
48     char        *busid;
49 
50     /* Server managed FD */
51     int         fd;
52 
53     /* Major number of the device node pointed to by ODEV_ATTRIB_PATH */
54     int         major;
55 
56     /* Minor number of the device node pointed to by ODEV_ATTRIB_PATH */
57     int         minor;
58 
59     /* kernel driver name */
60     char        *driver;
61 };
62 
63 /* Note starting with xserver 1.16 this function never fails */
64 struct OdevAttributes *
65 config_odev_allocate_attributes(void);
66 
67 void
68 config_odev_free_attributes(struct OdevAttributes *attribs);
69 
70 typedef void (*config_odev_probe_proc_ptr)(struct OdevAttributes *attribs);
71 void config_odev_probe(config_odev_probe_proc_ptr probe_callback);
72 
73 #ifdef CONFIG_UDEV_KMS
74 void NewGPUDeviceRequest(struct OdevAttributes *attribs);
75 void DeleteGPUDeviceRequest(struct OdevAttributes *attribs);
76 #endif
77 
78 #define ServerIsNotSeat0() (SeatId && strcmp(SeatId, "seat0"))
79 
80 struct xf86_platform_device *
81 xf86_find_platform_device_by_devnum(int major, int minor);
82 
83 #endif                          /* HOTPLUG_H */
84