1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
|
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <wayland-server.h>
#include <xf86drm.h>
#include <sys/stat.h>
#include <wlr/backend/session.h>
#include <wlr/backend/interface.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/util/list.h>
#include <wlr/util/log.h>
#include <backend/udev.h>
#include "drm.h"
static bool wlr_drm_backend_init(struct wlr_backend_state *drm) {
wlr_drm_scan_connectors(drm);
return true;
}
static void wlr_drm_backend_destroy(struct wlr_backend_state *drm) {
if (!drm) {
return;
}
for (size_t i = 0; drm->outputs && i < drm->outputs->length; ++i) {
struct wlr_output_state *output = drm->outputs->items[i];
wlr_output_destroy(output->base);
}
wlr_udev_signal_remove(drm->udev, &drm->drm_invalidated);
wlr_drm_renderer_free(&drm->renderer);
wlr_drm_resources_free(drm);
wlr_session_close_file(drm->session, drm->fd);
wl_event_source_remove(drm->drm_event);
free(drm);
}
static struct wlr_backend_impl backend_impl = {
.init = wlr_drm_backend_init,
.destroy = wlr_drm_backend_destroy
};
static void session_signal(struct wl_listener *listener, void *data) {
struct wlr_backend_state *drm = wl_container_of(listener, drm, session_signal);
struct wlr_session *session = data;
if (session->active) {
wlr_log(L_INFO, "DRM fd resumed");
for (size_t i = 0; i < drm->outputs->length; ++i) {
struct wlr_output_state *output = drm->outputs->items[i];
wlr_drm_output_start_renderer(output);
wlr_drm_crtc_set_cursor(drm, output->crtc);
}
} else {
wlr_log(L_INFO, "DRM fd paused");
}
}
static void drm_invalidated(struct wl_listener *listener, void *data) {
struct wlr_backend_state *drm = wl_container_of(listener, drm, drm_invalidated);
struct wlr_udev *udev = data;
(void)udev;
char *name = drmGetDeviceNameFromFd2(drm->fd);
wlr_log(L_DEBUG, "%s invalidated", name);
free(name);
wlr_drm_scan_connectors(drm);
}
struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
struct wlr_session *session, struct wlr_udev *udev, int gpu_fd) {
assert(display && session && gpu_fd >= 0);
char *name = drmGetDeviceNameFromFd2(gpu_fd);
drmVersion *version = drmGetVersion(gpu_fd);
wlr_log(L_INFO, "Initalizing DRM backend for %s (%s)", name, version->name);
free(name);
drmFreeVersion(version);
struct wlr_backend_state *drm = calloc(1, sizeof(*drm));
if (!drm) {
wlr_log_errno(L_ERROR, "Allocation failed");
return NULL;
}
struct wlr_backend *backend = wlr_backend_create(&backend_impl, drm);
if (!backend) {
wlr_log_errno(L_ERROR, "Allocation failed");
return NULL;
}
drm->base = backend;
drm->session = session;
drm->udev = udev;
drm->outputs = list_create();
if (!drm->outputs) {
wlr_log(L_ERROR, "Failed to allocate list");
goto error_backend;
}
drm->fd = gpu_fd;
struct stat st;
if (fstat(drm->fd, &st) < 0) {
wlr_log_errno(L_ERROR, "Stat failed");
}
drm->dev = st.st_rdev;
drm->drm_invalidated.notify = drm_invalidated;
wlr_udev_signal_add(udev, drm->dev, &drm->drm_invalidated);
drm->display = display;
struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
drm->drm_event = wl_event_loop_add_fd(event_loop, drm->fd,
WL_EVENT_READABLE, wlr_drm_event, NULL);
if (!drm->drm_event) {
wlr_log(L_ERROR, "Failed to create DRM event source");
goto error_fd;
}
drm->session_signal.notify = session_signal;
wl_signal_add(&session->session_signal, &drm->session_signal);
if (!wlr_drm_check_features(drm)) {
goto error_event;
}
if (!wlr_drm_resources_init(drm)) {
goto error_event;
}
if (!wlr_drm_renderer_init(&drm->renderer, drm->fd)) {
wlr_log(L_ERROR, "Failed to initialize renderer");
goto error_event;
}
return backend;
error_event:
wl_event_source_remove(drm->drm_event);
error_fd:
wlr_session_close_file(drm->session, drm->fd);
list_free(drm->outputs);
error_backend:
free(drm);
free(backend);
return NULL;
}
|
