1 /*
2 * Copyright © 2019 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 (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 DEALINGS
21 * IN THE SOFTWARE.
22 */
23 #include "macros.h"
24 #include <wayland-client.h>
25 #include "wayland-drm-client-protocol.h"
26 #include "device_select.h"
27 #include <string.h>
28 #include <stdio.h>
29 #include <unistd.h>
30 #include <fcntl.h>
31 #include <xf86drm.h>
32 struct device_select_wayland_info {
33 struct wl_drm *wl_drm;
34 drmDevicePtr dev_info;
35 bool info_is_set;
36 };
37
38 static void
device_select_drm_handle_device(void * data,struct wl_drm * drm,const char * device)39 device_select_drm_handle_device(void *data, struct wl_drm *drm, const char *device)
40 {
41 struct device_select_wayland_info *info = data;
42
43 int fd = open(device, O_RDWR | O_CLOEXEC);
44 if (fd == -1)
45 return;
46
47 int ret = drmGetDevice2(fd, 0, &info->dev_info);
48 if (ret >= 0)
49 info->info_is_set = true;
50 close(fd);
51 return;
52 }
53
54 static void
device_select_drm_handle_format(void * data,struct wl_drm * drm,uint32_t format)55 device_select_drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
56 {
57
58 }
59
60 static void
device_select_drm_handle_authenticated(void * data,struct wl_drm * drm)61 device_select_drm_handle_authenticated(void *data, struct wl_drm *drm)
62 {
63
64 }
65
66
67 static void
device_select_drm_handle_capabilities(void * data,struct wl_drm * drm,uint32_t value)68 device_select_drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
69 {
70
71 }
72
73
74 static const struct wl_drm_listener ds_drm_listener = {
75 .device = device_select_drm_handle_device,
76 .format = device_select_drm_handle_format,
77 .authenticated = device_select_drm_handle_authenticated,
78 .capabilities = device_select_drm_handle_capabilities
79 };
80
81 static void
device_select_registry_global(void * data,struct wl_registry * registry,uint32_t name,const char * interface,uint32_t version)82 device_select_registry_global(void *data, struct wl_registry *registry, uint32_t name,
83 const char *interface, uint32_t version)
84 {
85 struct device_select_wayland_info *info = data;
86 if (strcmp(interface, "wl_drm") == 0) {
87 info->wl_drm = wl_registry_bind(registry, name, &wl_drm_interface, MIN2(version, 2));
88 wl_drm_add_listener(info->wl_drm, &ds_drm_listener, data);
89 }
90 }
91
92 static void
device_select_registry_global_remove_cb(void * data,struct wl_registry * registry,uint32_t name)93 device_select_registry_global_remove_cb(void *data, struct wl_registry *registry,
94 uint32_t name)
95 {
96
97 }
98
device_select_find_wayland_pci_default(struct device_pci_info * devices,uint32_t device_count)99 int device_select_find_wayland_pci_default(struct device_pci_info *devices, uint32_t device_count)
100 {
101 struct wl_display *display;
102 struct wl_registry *registry = NULL;
103 unsigned default_idx = -1;
104 struct device_select_wayland_info info = {};
105
106 display = wl_display_connect(NULL);
107 if (!display)
108 goto out;
109
110 registry = wl_display_get_registry(display);
111 if (!registry) {
112 wl_display_disconnect(display);
113 goto out;
114 }
115
116 static const struct wl_registry_listener registry_listener =
117 { device_select_registry_global, device_select_registry_global_remove_cb };
118
119 wl_registry_add_listener(registry, ®istry_listener, &info);
120 wl_display_dispatch(display);
121 wl_display_roundtrip(display);
122
123
124 if (info.info_is_set) {
125 for (unsigned i = 0; i < device_count; i++) {
126 if (devices[i].has_bus_info) {
127 if (info.dev_info->businfo.pci->domain == devices[i].bus_info.domain &&
128 info.dev_info->businfo.pci->bus == devices[i].bus_info.bus &&
129 info.dev_info->businfo.pci->dev == devices[i].bus_info.dev &&
130 info.dev_info->businfo.pci->func == devices[i].bus_info.func)
131 default_idx = i;
132 } else {
133 if (info.dev_info->deviceinfo.pci->vendor_id == devices[i].dev_info.vendor_id &&
134 info.dev_info->deviceinfo.pci->device_id == devices[i].dev_info.device_id)
135 default_idx = i;
136 }
137 if (default_idx != -1)
138 break;
139 }
140 }
141
142 wl_drm_destroy(info.wl_drm);
143 wl_registry_destroy(registry);
144 wl_display_disconnect(display);
145 out:
146 return default_idx;
147 }
148