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/*
Copyright (C) 2023 Intel Corporation.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include "udev.h"
#ifdef HAVE_UDEV
#include <libudev.h>
#include <stdbool.h>
#include <stdlib.h>
GpuVendor spice_udev_detect_gpu(int gpu_vendor)
{
struct udev *udev;
struct udev_device *drm_dev, *pci_dev;
struct udev_enumerate *udev_enum;
struct udev_list_entry *entry, *devices;
const char *path, *vendor_id;
GpuVendor vendor = VENDOR_GPU_NOTDETECTED;
udev = udev_new();
if (!udev) {
return VENDOR_GPU_UNKNOWN;
}
udev_enum = udev_enumerate_new(udev);
if (udev_enum) {
udev_enumerate_add_match_subsystem(udev_enum, "drm");
udev_enumerate_add_match_sysname(udev_enum, "card[0-9]");
udev_enumerate_scan_devices(udev_enum);
devices = udev_enumerate_get_list_entry(udev_enum);
udev_list_entry_foreach(entry, devices) {
path = udev_list_entry_get_name(entry);
drm_dev = udev_device_new_from_syspath(udev, path);
if (!drm_dev) {
continue;
}
pci_dev = udev_device_get_parent_with_subsystem_devtype(drm_dev,
"pci", NULL);
if (pci_dev) {
vendor_id = udev_device_get_sysattr_value(pci_dev, "vendor");
if (vendor_id && strtol(vendor_id, NULL, 16) == gpu_vendor) {
vendor = VENDOR_GPU_DETECTED;
udev_device_unref(drm_dev);
break;
}
}
udev_device_unref(drm_dev);
}
udev_enumerate_unref(udev_enum);
}
udev_unref(udev);
return vendor;
}
#else
GpuVendor spice_udev_detect_gpu(int gpu_vendor)
{
return VENDOR_GPU_UNKNOWN;
}
#endif
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