itycodes
/
wlseeds
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #6 from ascent12/multi-gpu

Browse Source 
Udev event device matching
master
Drew DeVault 8 years ago committed by GitHub
parent 40b85d992a 5df56653ab
commit 7051d0e79d
4 changed files with 84 additions and 23 deletions
Show Stats Download Patch File Download Diff File

29
backend/drm/backend.c
Unescape View File

@ -5,6 +5,7 @@
#include <errno.h>
#include <assert.h>
#include <wayland-server.h>
#include <xf86drm.h>
#include <sys/stat.h>
#include <wlr/session.h>
#include <wlr/types.h>
@ -28,9 +29,9 @@ static void wlr_drm_backend_destroy(struct wlr_backend_state *state) {
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);
wlr_session_finish(state->session);
wl_event_source_remove(state->drm_event);
free(state);
}
@ -73,14 +74,31 @@ static void device_resumed(struct wl_listener *listener, void *data) {
}
}
static void drm_invalidated(struct wl_listener *listener, void *state) {
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));
@ -95,6 +113,7 @@ struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
state->backend = backend;
state->session = session;
state->udev = udev;
state->outputs = list_create();
if (!state->outputs) {
wlr_log(L_ERROR, "Failed to allocate list");
@ -102,9 +121,6 @@ struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
}
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) {
@ -112,6 +128,9 @@ struct wlr_backend *wlr_drm_backend_create(struct wl_display *display,
}
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,

1
backend/drm/drm.c
Unescape View File

@ -276,7 +276,6 @@ static void wlr_drm_output_enable(struct wlr_output_state *output, bool enable)
static void wlr_drm_output_destroy(struct wlr_output_state *output) {
wlr_drm_output_cleanup(output, true);
wlr_drm_renderer_free(output->renderer);
free(output);
}

63
backend/udev.c
Unescape View File

@ -4,6 +4,7 @@
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <wayland-server.h>
@ -73,7 +74,6 @@ int wlr_udev_find_gpu(struct wlr_udev *udev, struct wlr_session *session) {
struct udev_list_entry *entry;
int fd = -1;
char *drm_path = NULL;
udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(en)) {
bool is_boot_vga = false;
@ -117,9 +117,6 @@ int wlr_udev_find_gpu(struct wlr_udev *udev, struct wlr_session *session) {
continue;
}
free(drm_path);
drm_path = strdup(path);
udev_device_unref(dev);
// We've found the primary GPU
@ -130,7 +127,6 @@ int wlr_udev_find_gpu(struct wlr_udev *udev, struct wlr_session *session) {
udev_enumerate_unref(en);
udev->drm_path = drm_path;
return fd;
}
@ -143,21 +139,23 @@ static int udev_event(int fd, uint32_t mask, void *data) {
}
const char *action = udev_device_get_action(dev);
const char *path = udev_device_get_devnode(dev);
wlr_log(L_DEBUG, "udev event for %s (%s)",
udev_device_get_sysname(dev), action);
if (!path || strcmp(path, udev->drm_path) != 0) {
goto out;
}
if (!action || strcmp(action, "change") != 0) {
goto out;
}
// TODO: Specify the GPU that's being invalidated
wl_signal_emit(&udev->invalidate_drm, udev);
dev_t devnum = udev_device_get_devnum(dev);
struct wlr_udev_dev *signal;
wl_list_for_each(signal, &udev->devices, link) {
if (signal->dev == devnum) {
wl_signal_emit(&signal->invalidate, udev);
break;
}
}
out:
udev_device_unref(dev);
@ -174,7 +172,6 @@ struct wlr_udev *wlr_udev_create(struct wl_display *display) {
wlr_log(L_ERROR, "Failed to create udev context");
goto error;
}
wl_signal_init(&udev->invalidate_drm);
udev->mon = udev_monitor_new_from_netlink(udev->udev, "udev");
if (!udev->mon) {
@ -195,6 +192,8 @@ struct wlr_udev *wlr_udev_create(struct wl_display *display) {
goto error_mon;
}
wl_list_init(&udev->devices);
wlr_log(L_DEBUG, "Successfully initialized udev");
return udev;
@ -212,9 +211,43 @@ void wlr_udev_destroy(struct wlr_udev *udev) {
return;
}
wl_event_source_remove(udev->event);
struct wlr_udev_dev *dev, *tmp;
wl_list_for_each_safe(dev, tmp, &udev->devices, link) {
free(dev);
}
wl_event_source_remove(udev->event);
udev_monitor_unref(udev->mon);
udev_unref(udev->udev);
free(udev->drm_path);
}
bool wlr_udev_signal_add(struct wlr_udev *udev, dev_t dev, struct wl_listener *listener) {
struct wlr_udev_dev *device = malloc(sizeof(*device));
if (!device) {
wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
return false;
}
device->dev = dev;
wl_signal_init(&device->invalidate);
wl_signal_add(&device->invalidate, listener);
wl_list_insert(&udev->devices, &device->link);
return true;
}
void wlr_udev_signal_remove(struct wlr_udev *udev, struct wl_listener *listener) {
if (!udev || !listener) {
return;
}
struct wlr_udev_dev *dev, *tmp;
wl_list_for_each_safe(dev, tmp, &udev->devices, link) {
// The signal should only have a single listener
if (wl_signal_get(&dev->invalidate, listener->notify) != NULL) {
wl_list_remove(&dev->link);
free(dev);
return;
}
}
}

14
include/backend/udev.h
Unescape View File

@ -1,19 +1,29 @@
#ifndef _WLR_INTERNAL_UDEV_H
#define _WLR_INTERNAL_UDEV_H
#include <sys/types.h>
#include <libudev.h>
#include <wlr/session.h>
#include <wayland-server.h>
#include <wlr/backend/udev.h>
struct wlr_udev_dev {
dev_t dev;
struct wl_signal invalidate;
struct wl_list link;
};
struct wlr_udev {
struct udev *udev;
struct udev_monitor *mon;
char *drm_path;
struct wl_event_source *event;
struct wl_signal invalidate_drm;
struct wl_list devices;
};
int wlr_udev_find_gpu(struct wlr_udev *udev, struct wlr_session *session);
bool wlr_udev_signal_add(struct wlr_udev *udev, dev_t dev, struct wl_listener *listener);
void wlr_udev_signal_remove(struct wlr_udev *udev, struct wl_listener *listener);
#endif

Write Preview
Loading…
Cancel
Save