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/*
* Copyright © 2019 Red Hat
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "util/macros.h"
#include <wayland-client.h>
#include "wayland-drm-client-protocol.h"
#include "device_select.h"
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <xf86drm.h>
struct device_select_wayland_info {
struct wl_drm *wl_drm;
drmDevicePtr dev_info;
bool info_is_set;
};
static void
device_select_drm_handle_device(void *data, struct wl_drm *drm, const char *device)
{
struct device_select_wayland_info *info = data;
int fd = open(device, O_RDWR | O_CLOEXEC);
if (fd == -1)
return;
int ret = drmGetDevice2(fd, 0, &info->dev_info);
if (ret >= 0)
info->info_is_set = true;
close(fd);
return;
}
static void
device_select_drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
{
}
static void
device_select_drm_handle_authenticated(void *data, struct wl_drm *drm)
{
}
static void
device_select_drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
{
}
static const struct wl_drm_listener ds_drm_listener = {
.device = device_select_drm_handle_device,
.format = device_select_drm_handle_format,
.authenticated = device_select_drm_handle_authenticated,
.capabilities = device_select_drm_handle_capabilities
};
static void
device_select_registry_global(void *data, struct wl_registry *registry, uint32_t name,
const char *interface, uint32_t version)
{
struct device_select_wayland_info *info = data;
if (strcmp(interface, wl_drm_interface.name) == 0) {
info->wl_drm = wl_registry_bind(registry, name, &wl_drm_interface, MIN2(version, 2));
wl_drm_add_listener(info->wl_drm, &ds_drm_listener, data);
}
}
static void
device_select_registry_global_remove_cb(void *data, struct wl_registry *registry,
uint32_t name)
{
}
int device_select_find_wayland_pci_default(struct device_pci_info *devices, uint32_t device_count)
{
struct wl_display *display;
struct wl_registry *registry = NULL;
unsigned default_idx = -1;
struct device_select_wayland_info info = {};
display = wl_display_connect(NULL);
if (!display)
goto out;
registry = wl_display_get_registry(display);
if (!registry) {
wl_display_disconnect(display);
goto out;
}
static const struct wl_registry_listener registry_listener =
{ device_select_registry_global, device_select_registry_global_remove_cb };
wl_registry_add_listener(registry, ®istry_listener, &info);
wl_display_dispatch(display);
wl_display_roundtrip(display);
if (info.info_is_set) {
for (unsigned i = 0; i < device_count; i++) {
if (devices[i].has_bus_info) {
if (info.dev_info->businfo.pci->domain == devices[i].bus_info.domain &&
info.dev_info->businfo.pci->bus == devices[i].bus_info.bus &&
info.dev_info->businfo.pci->dev == devices[i].bus_info.dev &&
info.dev_info->businfo.pci->func == devices[i].bus_info.func)
default_idx = i;
} else {
if (info.dev_info->deviceinfo.pci->vendor_id == devices[i].dev_info.vendor_id &&
info.dev_info->deviceinfo.pci->device_id == devices[i].dev_info.device_id)
default_idx = i;
}
if (default_idx != -1)
break;
}
drmFreeDevice(&info.dev_info);
}
if (info.wl_drm)
wl_drm_destroy(info.wl_drm);
wl_registry_destroy(registry);
wl_display_disconnect(display);
out:
return default_idx;
}
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