tty_activate_vt(ec->tty, key - KEY_F1 + 1);
}
+/*
+ * Find primary GPU
+ * Some systems may have multiple DRM devices attached to a single seat. This
+ * function loops over all devices and tries to find a PCI device with the
+ * boot_vga sysfs attribute set to 1.
+ * If no such device is found, the first DRM device reported by udev is used.
+ */
+static struct udev_device*
+find_primary_gpu(struct drm_compositor *ec, const char *seat)
+{
+ struct udev_enumerate *e;
+ struct udev_list_entry *entry;
+ const char *path, *device_seat, *id;
+ struct udev_device *device, *drm_device, *pci;
+
+ e = udev_enumerate_new(ec->udev);
+ udev_enumerate_add_match_subsystem(e, "drm");
+ udev_enumerate_add_match_sysname(e, "card[0-9]*");
+
+ udev_enumerate_scan_devices(e);
+ drm_device = NULL;
+ udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
+ path = udev_list_entry_get_name(entry);
+ device = udev_device_new_from_syspath(ec->udev, path);
+ if (!device)
+ continue;
+ device_seat = udev_device_get_property_value(device, "ID_SEAT");
+ if (!device_seat)
+ device_seat = default_seat;
+ if (strcmp(device_seat, seat)) {
+ udev_device_unref(device);
+ continue;
+ }
+
+ pci = udev_device_get_parent_with_subsystem_devtype(device,
+ "pci", NULL);
+ if (pci) {
+ id = udev_device_get_sysattr_value(pci, "boot_vga");
+ if (id && !strcmp(id, "1")) {
+ if (drm_device)
+ udev_device_unref(drm_device);
+ drm_device = device;
+ break;
+ }
+ }
+
+ if (!drm_device)
+ drm_device = device;
+ else
+ udev_device_unref(device);
+ }
+
+ udev_enumerate_unref(e);
+ return drm_device;
+}
+
static struct weston_compositor *
drm_compositor_create(struct wl_display *display,
int connector, const char *seat, int tty,
int argc, char *argv[], const char *config_file)
{
struct drm_compositor *ec;
- struct udev_enumerate *e;
- struct udev_list_entry *entry;
- struct udev_device *device, *drm_device;
- const char *path, *device_seat;
+ struct udev_device *drm_device;
struct wl_event_loop *loop;
struct weston_seat *weston_seat, *next;
+ const char *path;
uint32_t key;
weston_log("initializing drm backend\n");
goto err_udev;
}
- e = udev_enumerate_new(ec->udev);
- udev_enumerate_add_match_subsystem(e, "drm");
- udev_enumerate_add_match_sysname(e, "card[0-9]*");
-
- udev_enumerate_scan_devices(e);
- drm_device = NULL;
- udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
- path = udev_list_entry_get_name(entry);
- device = udev_device_new_from_syspath(ec->udev, path);
- device_seat =
- udev_device_get_property_value(device, "ID_SEAT");
- if (!device_seat)
- device_seat = default_seat;
- if (strcmp(device_seat, seat) == 0) {
- drm_device = device;
- break;
- }
- udev_device_unref(device);
- }
-
+ drm_device = find_primary_gpu(ec, seat);
if (drm_device == NULL) {
weston_log("no drm device found\n");
- goto err_udev_enum;
+ goto err_tty;
}
+ path = udev_device_get_syspath(drm_device);
if (init_egl(ec, drm_device) < 0) {
weston_log("failed to initialize egl\n");
}
udev_device_unref(drm_device);
- udev_enumerate_unref(e);
return &ec->base;
destroy_sprites(ec);
err_udev_dev:
udev_device_unref(drm_device);
-err_udev_enum:
- udev_enumerate_unref(e);
+err_tty:
tty_destroy(ec->tty);
err_udev:
udev_unref(ec->udev);