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Refactor udev and drm initialization

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master
Drew DeVault 9 years ago
parent 62d612a01e
commit 40b85d992a
8 changed files with 69 additions and 44 deletions
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2
backend/CMakeLists.txt
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@ -11,7 +11,7 @@ add_library(wlr-backend
#wayland/wl_output.c
drm/backend.c
drm/drm.c
drm/udev.c
udev.c
backend.c
egl.c
)

23
backend/backend.c
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@ -1,4 +1,5 @@
#include <wayland-server.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
@ -39,7 +40,27 @@ void wlr_backend_destroy(struct wlr_backend *backend) {
struct wlr_backend *wlr_backend_autocreate(struct wl_display *display,
struct wlr_session *session) {
// TODO: Choose the most appropriate backend for the situation
// Attempt DRM+libinput
struct wlr_udev *udev;
if (!(udev = wlr_udev_create(display))) {
wlr_log(L_ERROR, "Failed to start udev");
goto error;
}
int gpu = wlr_udev_find_gpu(udev, session);
if (gpu == -1) {
wlr_log(L_ERROR, "Failed to open DRM device");
goto error_udev;
}
struct wlr_backend *wlr;
wlr = wlr_drm_backend_create(display, session);
wlr = wlr_drm_backend_create(display, session, udev, gpu);
if (!wlr) {
goto error_gpu;
}
return wlr;
error_gpu:
close(gpu);
error_udev:
wlr_udev_destroy(udev);
error:
return NULL;
}

31
backend/drm/backend.c
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@ -3,17 +3,16 @@
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <wayland-server.h>
#include <sys/stat.h>
#include <wlr/session.h>
#include <wlr/types.h>
#include <wlr/common/list.h>
#include "backend.h"
#include "backend/udev.h"
#include "backend/drm/backend.h"
#include "backend/drm/drm.h"
#include "backend/drm/udev.h"
#include "common/log.h"
static bool wlr_drm_backend_init(struct wlr_backend_state *state) {
@ -30,7 +29,6 @@ static void wlr_drm_backend_destroy(struct wlr_backend_state *state) {
wlr_output_destroy(output->wlr_output);
}
wlr_drm_renderer_free(&state->renderer);
wlr_udev_free(&state->udev);
wlr_session_close_file(state->session, state->fd);
wlr_session_finish(state->session);
wl_event_source_remove(state->drm_event);
@ -75,8 +73,14 @@ static void device_resumed(struct wl_listener *listener, void *data) {
}
}
static void drm_invalidated(struct wl_listener *listener, void *state) {
struct wlr_backend_state *drm = wl_container_of(listener, drm, drm_invalidated);
wlr_drm_scan_connectors(drm);
}
struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
struct wlr_session *session) {
struct wlr_session *session, struct wlr_udev *udev, int gpu_fd) {
assert(display && session && gpu_fd > 0);
struct wlr_backend_state *state = calloc(1, sizeof(struct wlr_backend_state));
if (!state) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
@ -97,16 +101,10 @@ struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
goto error_backend;
}
if (!wlr_udev_init(display, &state->udev)) {
wlr_log(L_ERROR, "Failed to start udev");
goto error_list;
}
state->fd = wlr_udev_find_gpu(&state->udev, state->session);
if (state->fd == -1) {
wlr_log(L_ERROR, "Failed to open DRM device");
goto error_udev;
}
state->fd = gpu_fd;
wl_list_init(&state->drm_invalidated.link);
state->drm_invalidated.notify = drm_invalidated;
wl_signal_add(&udev->invalidate_drm, &state->drm_invalidated);
struct stat st;
if (fstat(state->fd, &st) < 0) {
@ -145,9 +143,6 @@ error_event:
wl_event_source_remove(state->drm_event);
error_fd:
wlr_session_close_file(state->session, state->fd);
error_udev:
wlr_udev_free(&state->udev);
error_list:
list_free(state->outputs);
error_backend:
free(state);

27
backend/drm/udev.c → backend/udev.c
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@ -1,5 +1,4 @@
#define _POSIX_C_SOURCE 200809L
#include <libudev.h>
#include <stdbool.h>
#include <stdlib.h>
@ -8,13 +7,10 @@
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <wayland-server.h>
#include <wlr/session.h>
#include "backend.h"
#include "backend/drm/backend.h"
#include "backend/drm/udev.h"
#include "backend/drm/drm.h"
#include "backend/udev.h"
#include "common/log.h"
/* Tests if 'path' is KMS compatible by trying to open it.
@ -140,7 +136,6 @@ int wlr_udev_find_gpu(struct wlr_udev *udev, struct wlr_session *session) {
static int udev_event(int fd, uint32_t mask, void *data) {
struct wlr_udev *udev = data;
struct wlr_backend_state *state = wl_container_of(udev, state, udev);
struct udev_device *dev = udev_monitor_receive_device(udev->mon);
if (!dev) {
@ -161,19 +156,25 @@ static int udev_event(int fd, uint32_t mask, void *data) {
goto out;
}
wlr_drm_scan_connectors(state);
// TODO: Specify the GPU that's being invalidated
wl_signal_emit(&udev->invalidate_drm, udev);
out:
udev_device_unref(dev);
return 1;
}
bool wlr_udev_init(struct wl_display *display, struct wlr_udev *udev) {
struct wlr_udev *wlr_udev_create(struct wl_display *display) {
struct wlr_udev *udev = calloc(sizeof(struct wlr_udev), 1);
if (!udev) {
return NULL;
}
udev->udev = udev_new();
if (!udev->udev) {
wlr_log(L_ERROR, "Failed to create udev context");
return false;
goto error;
}
wl_signal_init(&udev->invalidate_drm);
udev->mon = udev_monitor_new_from_netlink(udev->udev, "udev");
if (!udev->mon) {
@ -195,16 +196,18 @@ bool wlr_udev_init(struct wl_display *display, struct wlr_udev *udev) {
}
wlr_log(L_DEBUG, "Successfully initialized udev");
return true;
return udev;
error_mon:
udev_monitor_unref(udev->mon);
error_udev:
udev_unref(udev->udev);
return false;
error:
free(udev);
return NULL;
}
void wlr_udev_free(struct wlr_udev *udev) {
void wlr_udev_destroy(struct wlr_udev *udev) {
if (!udev) {
return;
}

5
include/backend/drm/backend.h
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@ -13,7 +13,7 @@
#include <wlr/backend/drm.h>
#include "backend.h"
#include "udev.h"
#include "backend/udev.h"
#include "event.h"
#include "drm.h"
@ -26,13 +26,14 @@ struct wlr_backend_state {
struct wl_listener device_paused;
struct wl_listener device_resumed;
struct wl_listener drm_invalidated;
uint32_t taken_crtcs;
list_t *outputs;
struct wlr_drm_renderer renderer;
struct wlr_session *session;
struct wlr_udev udev;
struct wlr_udev *udev;
};
#endif

13
include/backend/drm/udev.h → include/backend/udev.h
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@ -1,24 +1,19 @@
#ifndef UDEV_H
#define UDEV_H
#ifndef _WLR_INTERNAL_UDEV_H
#define _WLR_INTERNAL_UDEV_H
#include <libudev.h>
#include <wlr/session.h>
#include <wayland-server.h>
#include <wlr/backend/udev.h>
struct wlr_udev {
struct udev *udev;
struct udev_monitor *mon;
char *drm_path;
struct wl_event_source *event;
struct wl_signal invalidate_drm;
};
struct wlr_drm_backend;
bool wlr_udev_init(struct wl_display *display, struct wlr_udev *udev);
void wlr_udev_free(struct wlr_udev *udev);
int wlr_udev_find_gpu(struct wlr_udev *udev, struct wlr_session *session);
void wlr_udev_event(struct wlr_drm_backend *backend);
#endif

3
include/wlr/backend/drm.h
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@ -4,8 +4,9 @@
#include <wayland-server.h>
#include <wlr/session.h>
#include <wlr/backend.h>
#include <wlr/backend/udev.h>
struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
struct wlr_session *session);
struct wlr_session *session, struct wlr_udev *udev, int gpu_fd);
#endif

9
include/wlr/backend/udev.h
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@ -0,0 +1,9 @@
#ifndef _WLR_BACKEND_UDEV_H
#define _WLR_BACKEND_UDEV_H
struct wlr_udev;
struct wlr_udev *wlr_udev_create(struct wl_display *display);
void wlr_udev_destroy(struct wlr_udev *udev);
#endif
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