1 /*
2 * Copyright © 2012 Red Hat.
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 shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20 * DEALINGS IN THE SOFTWARE.
21 *
22 * Author: Dave Airlie <airlied@redhat.com>
23 */
24 #ifndef XF86_PLATFORM_BUS_H
25 #define XF86_PLATFORM_BUS_H
26
27 #include "hotplug.h"
28 #include "xf86MatchDrivers.h"
29
30 struct xf86_platform_device {
31 struct OdevAttributes *attribs;
32 /* for PCI devices */
33 struct pci_device *pdev;
34 int flags;
35 };
36
37 /* xf86_platform_device flags */
38 #define XF86_PDEV_UNOWNED 0x01
39 #define XF86_PDEV_SERVER_FD 0x02
40 #define XF86_PDEV_PAUSED 0x04
41
42 #ifdef XSERVER_PLATFORM_BUS
43 int xf86platformProbe(void);
44 int xf86platformProbeDev(DriverPtr drvp);
45 int xf86platformAddGPUDevices(DriverPtr drvp);
46 void xf86MergeOutputClassOptions(int entityIndex, void **options);
47
48 extern int xf86_num_platform_devices;
49 extern struct xf86_platform_device *xf86_platform_devices;
50
51 extern int
52 xf86_add_platform_device(struct OdevAttributes *attribs, Bool unowned);
53 extern int
54 xf86_remove_platform_device(int dev_index);
55 extern Bool
56 xf86_get_platform_device_unowned(int index);
57
58 extern int
59 xf86platformAddDevice(int index);
60 extern void
61 xf86platformRemoveDevice(int index);
62
63 static inline struct OdevAttributes *
xf86_platform_device_odev_attributes(struct xf86_platform_device * device)64 xf86_platform_device_odev_attributes(struct xf86_platform_device *device)
65 {
66 return device->attribs;
67 }
68
69 static inline struct OdevAttributes *
xf86_platform_odev_attributes(int index)70 xf86_platform_odev_attributes(int index)
71 {
72 struct xf86_platform_device *device = &xf86_platform_devices[index];
73
74 return device->attribs;
75 }
76
77 #ifndef _XORG_CONFIG_H_
78 /*
79 * Define the legacy API only for external builds
80 */
81
82 /* path to kernel device node - Linux e.g. /dev/dri/card0 */
83 #define ODEV_ATTRIB_PATH 1
84 /* system device path - Linux e.g. /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1 */
85 #define ODEV_ATTRIB_SYSPATH 2
86 /* DRI-style bus id */
87 #define ODEV_ATTRIB_BUSID 3
88 /* Server managed FD */
89 #define ODEV_ATTRIB_FD 4
90 /* Major number of the device node pointed to by ODEV_ATTRIB_PATH */
91 #define ODEV_ATTRIB_MAJOR 5
92 /* Minor number of the device node pointed to by ODEV_ATTRIB_PATH */
93 #define ODEV_ATTRIB_MINOR 6
94 /* kernel driver name */
95 #define ODEV_ATTRIB_DRIVER 7
96
97 /* Protect against a mismatch attribute type by generating a compiler
98 * error using a negative array size when an incorrect attribute is
99 * passed
100 */
101
102 #define _ODEV_ATTRIB_IS_STRING(x) ((x) == ODEV_ATTRIB_PATH || \
103 (x) == ODEV_ATTRIB_SYSPATH || \
104 (x) == ODEV_ATTRIB_BUSID || \
105 (x) == ODEV_ATTRIB_DRIVER)
106
107 #define _ODEV_ATTRIB_STRING_CHECK(x) ((int (*)[_ODEV_ATTRIB_IS_STRING(x)-1]) 0)
108
109 static inline char *
_xf86_get_platform_device_attrib(struct xf86_platform_device * device,int attrib,int (* fake)[0])110 _xf86_get_platform_device_attrib(struct xf86_platform_device *device, int attrib, int (*fake)[0])
111 {
112 switch (attrib) {
113 case ODEV_ATTRIB_PATH:
114 return xf86_platform_device_odev_attributes(device)->path;
115 case ODEV_ATTRIB_SYSPATH:
116 return xf86_platform_device_odev_attributes(device)->syspath;
117 case ODEV_ATTRIB_BUSID:
118 return xf86_platform_device_odev_attributes(device)->busid;
119 case ODEV_ATTRIB_DRIVER:
120 return xf86_platform_device_odev_attributes(device)->driver;
121 default:
122 assert(FALSE);
123 return NULL;
124 }
125 }
126
127 #define xf86_get_platform_device_attrib(device, attrib) _xf86_get_platform_device_attrib(device,attrib,_ODEV_ATTRIB_STRING_CHECK(attrib))
128
129 #define _ODEV_ATTRIB_IS_INT(x) ((x) == ODEV_ATTRIB_FD || (x) == ODEV_ATTRIB_MAJOR || (x) == ODEV_ATTRIB_MINOR)
130 #define _ODEV_ATTRIB_INT_DEFAULT(x) ((x) == ODEV_ATTRIB_FD ? -1 : 0)
131 #define _ODEV_ATTRIB_DEFAULT_CHECK(x,def) (_ODEV_ATTRIB_INT_DEFAULT(x) == (def))
132 #define _ODEV_ATTRIB_INT_CHECK(x,def) ((int (*)[_ODEV_ATTRIB_IS_INT(x)*_ODEV_ATTRIB_DEFAULT_CHECK(x,def)-1]) 0)
133
134 static inline int
_xf86_get_platform_device_int_attrib(struct xf86_platform_device * device,int attrib,int (* fake)[0])135 _xf86_get_platform_device_int_attrib(struct xf86_platform_device *device, int attrib, int (*fake)[0])
136 {
137 switch (attrib) {
138 case ODEV_ATTRIB_FD:
139 return xf86_platform_device_odev_attributes(device)->fd;
140 case ODEV_ATTRIB_MAJOR:
141 return xf86_platform_device_odev_attributes(device)->major;
142 case ODEV_ATTRIB_MINOR:
143 return xf86_platform_device_odev_attributes(device)->minor;
144 default:
145 assert(FALSE);
146 return 0;
147 }
148 }
149
150 #define xf86_get_platform_device_int_attrib(device, attrib, def) _xf86_get_platform_device_int_attrib(device,attrib,_ODEV_ATTRIB_INT_CHECK(attrib,def))
151
152 #endif
153
154 extern _X_EXPORT Bool
155 xf86PlatformDeviceCheckBusID(struct xf86_platform_device *device, const char *busid);
156
157 extern _X_EXPORT void
158 xf86PlatformMatchDriver(XF86MatchedDrivers *);
159
160 extern void xf86platformVTProbe(void);
161 extern void xf86platformPrimary(void);
162
163 #else
164
xf86platformAddGPUDevices(DriverPtr drvp)165 static inline int xf86platformAddGPUDevices(DriverPtr drvp) { return FALSE; }
xf86MergeOutputClassOptions(int index,void ** options)166 static inline void xf86MergeOutputClassOptions(int index, void **options) {}
167
168 #endif
169
170 #endif
171