udev: Add helpers to list DRM devices
Will be used to move out some udev related logic when adding GPUs. https://gitlab.gnome.org/GNOME/mutter/issues/548 https://gitlab.gnome.org/GNOME/mutter/merge_requests/525
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src/backends/native/meta-backend-native-types.h
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src/backends/native/meta-backend-native-types.h
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/*
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* Copyright (C) 2019 Red Hat
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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*/
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#ifndef META_BACKEND_NATIVE_TYPES_H
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#define META_BACKEND_NATIVE_TYPES_H
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typedef struct _MetaBackendNative MetaBackendNative;
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#endif /* META_BACKEND_NATIVE_TYPES_H */
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@ -531,7 +531,7 @@ meta_backend_native_initable_init (GInitable *initable,
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if (!native->launcher)
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if (!native->launcher)
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return FALSE;
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return FALSE;
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native->udev = meta_udev_new ();
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native->udev = meta_udev_new (native);
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native->barrier_manager = meta_barrier_manager_native_new ();
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native->barrier_manager = meta_barrier_manager_native_new ();
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return initable_parent_iface->init (initable, cancellable, error);
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return initable_parent_iface->init (initable, cancellable, error);
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@ -22,6 +22,11 @@
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#include "backends/native/meta-udev.h"
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#include "backends/native/meta-udev.h"
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#include "backends/native/meta-backend-native.h"
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#include "backends/native/meta-launcher.h"
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#define DRM_CARD_UDEV_DEVICE_TYPE "drm_minor"
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enum
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enum
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{
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{
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DEVICE_ADDED,
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DEVICE_ADDED,
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@ -35,6 +40,8 @@ struct _MetaUdev
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{
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{
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GObject parent;
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GObject parent;
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MetaBackendNative *backend_native;
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GUdevClient *gudev_client;
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GUdevClient *gudev_client;
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guint uevent_handler_id;
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guint uevent_handler_id;
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@ -42,6 +49,106 @@ struct _MetaUdev
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G_DEFINE_TYPE (MetaUdev, meta_udev, G_TYPE_OBJECT)
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G_DEFINE_TYPE (MetaUdev, meta_udev, G_TYPE_OBJECT)
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gboolean
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meta_is_udev_device_platform_device (GUdevDevice *device)
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{
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g_autoptr (GUdevDevice) platform_device = NULL;
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platform_device = g_udev_device_get_parent_with_subsystem (device,
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"platform",
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NULL);
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return !!platform_device;
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}
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gboolean
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meta_is_udev_device_boot_vga (GUdevDevice *device)
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{
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g_autoptr (GUdevDevice) pci_device = NULL;
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pci_device = g_udev_device_get_parent_with_subsystem (device, "pci", NULL);
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if (!pci_device)
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return FALSE;
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return g_udev_device_get_sysfs_attr_as_int (pci_device, "boot_vga") == 1;
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}
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static gboolean
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meta_udev_is_drm_device (MetaUdev *udev,
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GUdevDevice *device)
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{
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MetaLauncher *launcher =
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meta_backend_native_get_launcher (udev->backend_native);
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const char *seat_id;
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const char *device_type;
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const char *device_seat;
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/* Filter out devices that are not character device, like card0-VGA-1. */
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if (g_udev_device_get_device_type (device) != G_UDEV_DEVICE_TYPE_CHAR)
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return FALSE;
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device_type = g_udev_device_get_property (device, "DEVTYPE");
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if (g_strcmp0 (device_type, DRM_CARD_UDEV_DEVICE_TYPE) != 0)
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return FALSE;
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device_seat = g_udev_device_get_property (device, "ID_SEAT");
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if (!device_seat)
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{
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/* When ID_SEAT is not set, it means seat0. */
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device_seat = "seat0";
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}
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/* Skip devices that do not belong to our seat. */
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seat_id = meta_launcher_get_seat_id (launcher);
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if (g_strcmp0 (seat_id, device_seat))
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return FALSE;
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return TRUE;
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}
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GList *
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meta_udev_list_drm_devices (MetaUdev *udev,
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GError **error)
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{
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g_autoptr (GUdevEnumerator) enumerator = NULL;
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GList *devices;
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GList *l;
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enumerator = g_udev_enumerator_new (udev->gudev_client);
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g_udev_enumerator_add_match_name (enumerator, "card*");
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g_udev_enumerator_add_match_tag (enumerator, "seat");
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/*
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* We need to explicitly match the subsystem for now.
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* https://bugzilla.gnome.org/show_bug.cgi?id=773224
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*/
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g_udev_enumerator_add_match_subsystem (enumerator, "drm");
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devices = g_udev_enumerator_execute (enumerator);
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if (!devices)
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{
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g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
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"No drm devices found");
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return FALSE;
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}
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for (l = devices; l;)
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{
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GUdevDevice *device = l->data;
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GList *l_next = l->next;
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if (!meta_udev_is_drm_device (udev, device))
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{
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g_object_unref (device);
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devices = g_list_delete_link (devices, l);
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}
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l = l_next;
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}
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return devices;
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}
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static void
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static void
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on_uevent (GUdevClient *client,
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on_uevent (GUdevClient *client,
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const char *action,
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const char *action,
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}
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}
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MetaUdev *
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MetaUdev *
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meta_udev_new (void)
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meta_udev_new (MetaBackendNative *backend_native)
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{
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{
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return g_object_new (META_TYPE_UDEV, NULL);
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MetaUdev *udev;
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udev = g_object_new (META_TYPE_UDEV, NULL);
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udev->backend_native = backend_native;
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return udev;
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}
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}
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static void
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static void
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#include <gudev/gudev.h>
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#include <gudev/gudev.h>
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#include "backends/native/meta-backend-native-types.h"
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#define META_TYPE_UDEV (meta_udev_get_type ())
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#define META_TYPE_UDEV (meta_udev_get_type ())
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G_DECLARE_FINAL_TYPE (MetaUdev, meta_udev, META, UDEV, GObject)
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G_DECLARE_FINAL_TYPE (MetaUdev, meta_udev, META, UDEV, GObject)
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GUdevClient * meta_udev_get_gudev_client (MetaUdev *udev);
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GUdevClient * meta_udev_get_gudev_client (MetaUdev *udev);
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MetaUdev * meta_udev_new (void);
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gboolean meta_is_udev_device_platform_device (GUdevDevice *device);
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gboolean meta_is_udev_device_boot_vga (GUdevDevice *device);
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GList * meta_udev_list_drm_devices (MetaUdev *udev,
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GError **error);
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MetaUdev * meta_udev_new (MetaBackendNative *backend_native);
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#endif /* META_UDEV_H */
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#endif /* META_UDEV_H */
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@ -569,6 +569,7 @@ if have_native_backend
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'backends/native/meta-backend-native.c',
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'backends/native/meta-backend-native.c',
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'backends/native/meta-backend-native.h',
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'backends/native/meta-backend-native.h',
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'backends/native/meta-backend-native-private.h',
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'backends/native/meta-backend-native-private.h',
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'backends/native/meta-backend-native-types.h',
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'backends/native/meta-barrier-native.c',
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'backends/native/meta-barrier-native.c',
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'backends/native/meta-barrier-native.h',
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'backends/native/meta-barrier-native.h',
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'backends/native/meta-clutter-backend-native.c',
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'backends/native/meta-clutter-backend-native.c',
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