1/*
2 * Copyright © 2019 Red Hat
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23#include "macros.h"
24#include <wayland-client.h>
25#include "wayland-drm-client-protocol.h"
26#include "device_select.h"
27#include <string.h>
28#include <stdio.h>
29#include <unistd.h>
30#include <fcntl.h>
31#include <xf86drm.h>
32struct device_select_wayland_info {
33   struct wl_drm *wl_drm;
34   drmDevicePtr dev_info;
35   bool info_is_set;
36};
37
38static void
39device_select_drm_handle_device(void *data, struct wl_drm *drm, const char *device)
40{
41   struct device_select_wayland_info *info = data;
42
43   int fd = open(device, O_RDWR | O_CLOEXEC);
44   if (fd == -1)
45      return;
46
47   int ret = drmGetDevice2(fd, 0, &info->dev_info);
48   if (ret >= 0)
49      info->info_is_set = true;
50   close(fd);
51   return;
52}
53
54static void
55device_select_drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
56{
57
58}
59
60static void
61device_select_drm_handle_authenticated(void *data, struct wl_drm *drm)
62{
63
64}
65
66
67static void
68device_select_drm_handle_capabilities(void *data, struct wl_drm *drm, uint32_t value)
69{
70
71}
72
73
74static const struct wl_drm_listener ds_drm_listener = {
75   .device = device_select_drm_handle_device,
76   .format = device_select_drm_handle_format,
77   .authenticated = device_select_drm_handle_authenticated,
78   .capabilities = device_select_drm_handle_capabilities
79};
80
81static void
82device_select_registry_global(void *data, struct wl_registry *registry, uint32_t name,
83			      const char *interface, uint32_t version)
84{
85   struct device_select_wayland_info *info = data;
86   if (strcmp(interface, "wl_drm") == 0) {
87      info->wl_drm = wl_registry_bind(registry, name, &wl_drm_interface, MIN2(version, 2));
88      wl_drm_add_listener(info->wl_drm, &ds_drm_listener, data);
89   }
90}
91
92static void
93device_select_registry_global_remove_cb(void *data, struct wl_registry *registry,
94					uint32_t name)
95{
96
97}
98
99int device_select_find_wayland_pci_default(struct device_pci_info *devices, uint32_t device_count)
100{
101   struct wl_display *display;
102   struct wl_registry *registry = NULL;
103   unsigned default_idx = -1;
104   struct device_select_wayland_info info = {};
105
106   display = wl_display_connect(NULL);
107   if (!display)
108      goto out;
109
110   registry = wl_display_get_registry(display);
111   if (!registry) {
112      wl_display_disconnect(display);
113      goto out;
114   }
115
116   static const struct wl_registry_listener registry_listener =
117      { device_select_registry_global, device_select_registry_global_remove_cb };
118
119   wl_registry_add_listener(registry, &registry_listener, &info);
120   wl_display_dispatch(display);
121   wl_display_roundtrip(display);
122
123
124   if (info.info_is_set) {
125      for (unsigned i = 0; i < device_count; i++) {
126	 if (devices[i].has_bus_info) {
127	    if (info.dev_info->businfo.pci->domain == devices[i].bus_info.domain &&
128		info.dev_info->businfo.pci->bus == devices[i].bus_info.bus &&
129		info.dev_info->businfo.pci->dev == devices[i].bus_info.dev &&
130		info.dev_info->businfo.pci->func == devices[i].bus_info.func)
131	       default_idx = i;
132	 } else {
133	    if (info.dev_info->deviceinfo.pci->vendor_id == devices[i].dev_info.vendor_id &&
134		info.dev_info->deviceinfo.pci->device_id == devices[i].dev_info.device_id)
135	       default_idx = i;
136	 }
137	 if (default_idx != -1)
138	    break;
139      }
140   }
141
142   if (info.wl_drm)
143      wl_drm_destroy(info.wl_drm);
144   wl_registry_destroy(registry);
145   wl_display_disconnect(display);
146 out:
147   return default_idx;
148}
149