152 lines
4.1 KiB
C
152 lines
4.1 KiB
C
#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/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 "backend/drm.h"
|
|
|
|
static bool wlr_drm_backend_init(struct wlr_backend_state *state) {
|
|
wlr_drm_scan_connectors(state);
|
|
return true;
|
|
}
|
|
|
|
static void wlr_drm_backend_destroy(struct wlr_backend_state *state) {
|
|
if (!state) {
|
|
return;
|
|
}
|
|
for (size_t i = 0; state->outputs && i < state->outputs->length; ++i) {
|
|
struct wlr_output_state *output = state->outputs->items[i];
|
|
wlr_output_destroy(output->wlr_output);
|
|
}
|
|
wlr_udev_signal_remove(state->udev, &state->drm_invalidated);
|
|
wlr_drm_renderer_free(&state->renderer);
|
|
wlr_session_close_file(state->session, state->fd);
|
|
wl_event_source_remove(state->drm_event);
|
|
free(state);
|
|
}
|
|
|
|
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);
|
|
}
|
|
} else {
|
|
wlr_log(L_INFO, "DRM fd paused");
|
|
|
|
for (size_t i = 0; i < drm->outputs->length; ++i) {
|
|
struct wlr_output_state *output = drm->outputs->items[i];
|
|
wlr_drm_output_pause_renderer(output);
|
|
}
|
|
}
|
|
}
|
|
|
|
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 *state = calloc(1, sizeof(struct wlr_backend_state));
|
|
if (!state) {
|
|
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_backend *backend = wlr_backend_create(&backend_impl, state);
|
|
if (!backend) {
|
|
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
|
|
return NULL;
|
|
}
|
|
|
|
state->backend = backend;
|
|
state->session = session;
|
|
state->udev = udev;
|
|
state->outputs = list_create();
|
|
if (!state->outputs) {
|
|
wlr_log(L_ERROR, "Failed to allocate list");
|
|
goto error_backend;
|
|
}
|
|
|
|
state->fd = gpu_fd;
|
|
|
|
struct stat st;
|
|
if (fstat(state->fd, &st) < 0) {
|
|
wlr_log(L_ERROR, "Stat failed: %s", strerror(errno));
|
|
}
|
|
state->dev = st.st_rdev;
|
|
|
|
state->drm_invalidated.notify = drm_invalidated;
|
|
wlr_udev_signal_add(udev, state->dev, &state->drm_invalidated);
|
|
|
|
struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
|
|
|
|
state->drm_event = wl_event_loop_add_fd(event_loop, state->fd,
|
|
WL_EVENT_READABLE, wlr_drm_event, NULL);
|
|
if (!state->drm_event) {
|
|
wlr_log(L_ERROR, "Failed to create DRM event source");
|
|
goto error_fd;
|
|
}
|
|
|
|
state->session_signal.notify = session_signal;
|
|
wl_signal_add(&session->session_signal, &state->session_signal);
|
|
|
|
// TODO: what is the difference between the per-output renderer and this
|
|
// one?
|
|
if (!wlr_drm_renderer_init(&state->renderer, state->fd)) {
|
|
wlr_log(L_ERROR, "Failed to initialize renderer");
|
|
goto error_event;
|
|
}
|
|
|
|
return backend;
|
|
|
|
error_event:
|
|
wl_event_source_remove(state->drm_event);
|
|
error_fd:
|
|
wlr_session_close_file(state->session, state->fd);
|
|
list_free(state->outputs);
|
|
error_backend:
|
|
free(state);
|
|
free(backend);
|
|
return NULL;
|
|
}
|