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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wayland-server.h>
#include <wlr/backend/interface.h>
#include <wlr/backend/session.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/render/egl.h>
#include <wlr/types/wlr_list.h>
#include <wlr/util/log.h>
#include <xf86drm.h>
#include "backend/drm/drm.h"
#include "util/signal.h"
static bool wlr_drm_backend_start(struct wlr_backend *backend) {
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)backend;
wlr_drm_scan_connectors(drm);
return true;
}
static void wlr_drm_backend_destroy(struct wlr_backend *backend) {
if (!backend) {
return;
}
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)backend;
wlr_drm_restore_outputs(drm);
struct wlr_drm_connector *conn, *next;
wl_list_for_each_safe(conn, next, &drm->outputs, link) {
wlr_output_destroy(&conn->output);
}
wlr_signal_emit_safe(&backend->events.destroy, backend);
wl_list_remove(&drm->display_destroy.link);
wl_list_remove(&drm->session_signal.link);
wl_list_remove(&drm->drm_invalidated.link);
wlr_drm_resources_free(drm);
wlr_drm_renderer_finish(&drm->renderer);
wlr_session_close_file(drm->session, drm->fd);
wl_event_source_remove(drm->drm_event);
free(drm);
}
static struct wlr_egl *wlr_drm_backend_get_egl(struct wlr_backend *backend) {
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)backend;
return &drm->renderer.egl;
}
static struct wlr_renderer *wlr_drm_backend_get_renderer(
struct wlr_backend *backend) {
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)backend;
return drm->renderer.wlr_rend;
}
static struct wlr_backend_impl backend_impl = {
.start = wlr_drm_backend_start,
.destroy = wlr_drm_backend_destroy,
.get_egl = wlr_drm_backend_get_egl,
.get_renderer = wlr_drm_backend_get_renderer,
};
bool wlr_backend_is_drm(struct wlr_backend *b) {
return b->impl == &backend_impl;
}
static void session_signal(struct wl_listener *listener, void *data) {
struct wlr_drm_backend *drm =
wl_container_of(listener, drm, session_signal);
struct wlr_session *session = data;
if (session->active) {
wlr_log(L_INFO, "DRM fd resumed");
wlr_drm_scan_connectors(drm);
struct wlr_drm_connector *conn;
wl_list_for_each(conn, &drm->outputs, link){
if (conn->output.enabled) {
wlr_output_set_mode(&conn->output, conn->output.current_mode);
} else {
wlr_drm_connector_enable(&conn->output, false);
}
if (!conn->crtc) {
continue;
}
struct wlr_drm_plane *plane = conn->crtc->cursor;
drm->iface->crtc_set_cursor(drm, conn->crtc,
(plane && plane->cursor_enabled) ? plane->cursor_bo : NULL);
drm->iface->crtc_move_cursor(drm, conn->crtc, conn->cursor_x,
conn->cursor_y);
}
} else {
wlr_log(L_INFO, "DRM fd paused");
}
}
static void drm_invalidated(struct wl_listener *listener, void *data) {
struct wlr_drm_backend *drm =
wl_container_of(listener, drm, drm_invalidated);
char *name = drmGetDeviceNameFromFd2(drm->fd);
wlr_log(L_DEBUG, "%s invalidated", name);
free(name);
wlr_drm_scan_connectors(drm);
}
static void handle_display_destroy(struct wl_listener *listener, void *data) {
struct wlr_drm_backend *drm =
wl_container_of(listener, drm, display_destroy);
wlr_drm_backend_destroy(&drm->backend);
}
struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
struct wlr_session *session, int gpu_fd, struct wlr_backend *parent) {
assert(display && session && gpu_fd >= 0);
assert(!parent || wlr_backend_is_drm(parent));
char *name = drmGetDeviceNameFromFd2(gpu_fd);
drmVersion *version = drmGetVersion(gpu_fd);
wlr_log(L_INFO, "Initializing DRM backend for %s (%s)", name, version->name);
free(name);
drmFreeVersion(version);
struct wlr_drm_backend *drm = calloc(1, sizeof(struct wlr_drm_backend));
if (!drm) {
wlr_log_errno(L_ERROR, "Allocation failed");
return NULL;
}
wlr_backend_init(&drm->backend, &backend_impl);
drm->session = session;
wl_list_init(&drm->outputs);
drm->fd = gpu_fd;
drm->parent = (struct wlr_drm_backend *)parent;
drm->drm_invalidated.notify = drm_invalidated;
wlr_session_signal_add(session, gpu_fd, &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, &drm->renderer)) {
wlr_log(L_ERROR, "Failed to initialize renderer");
goto error_event;
}
if (!wlr_egl_bind_display(&drm->renderer.egl, display)) {
wlr_log(L_INFO, "Failed to bind egl/wl display");
}
drm->display_destroy.notify = handle_display_destroy;
wl_display_add_destroy_listener(display, &drm->display_destroy);
return &drm->backend;
error_event:
wl_list_remove(&drm->session_signal.link);
wl_event_source_remove(drm->drm_event);
error_fd:
wlr_session_close_file(drm->session, drm->fd);
free(drm);
return NULL;
}
struct wlr_session *wlr_drm_backend_get_session(struct wlr_backend *backend) {
struct wlr_drm_backend *drm = (struct wlr_drm_backend *)backend;
return drm->session;
}
|
