1/*
2 * Mesa 3-D graphics library
3 * Version:  7.11
4 *
5 * Copyright (C) 2011 Benjamin Franzke <benjaminfranzke@googlemail.com>
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23 * DEALINGS IN THE SOFTWARE.
24 */
25
26#include "util/u_memory.h"
27#include "util/u_inlines.h"
28
29#include "pipe/p_compiler.h"
30#include "pipe/p_screen.h"
31#include "pipe/p_context.h"
32#include "pipe/p_state.h"
33#include "state_tracker/drm_driver.h"
34
35#include "egllog.h"
36#include <errno.h>
37
38#include "native_wayland.h"
39
40#include <wayland-client.h>
41#include "wayland-drm-client-protocol.h"
42#include "wayland-egl-priv.h"
43
44#include "common/native_wayland_drm_bufmgr_helper.h"
45
46#include <xf86drm.h>
47#include <sys/types.h>
48#include <sys/stat.h>
49#include <fcntl.h>
50
51struct wayland_drm_display {
52   struct wayland_display base;
53
54   const struct native_event_handler *event_handler;
55
56   struct wl_drm *wl_drm;
57   struct wl_drm *wl_server_drm; /* for EGL_WL_bind_wayland_display */
58   int fd;
59   char *device_name;
60   boolean authenticated;
61};
62
63static INLINE struct wayland_drm_display *
64wayland_drm_display(const struct native_display *ndpy)
65{
66   return (struct wayland_drm_display *) ndpy;
67}
68
69static void
70wayland_drm_display_destroy(struct native_display *ndpy)
71{
72   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
73
74   if (drmdpy->wl_drm)
75      wl_drm_destroy(drmdpy->wl_drm);
76   if (drmdpy->device_name)
77      FREE(drmdpy->device_name);
78   if (drmdpy->base.configs)
79      FREE(drmdpy->base.configs);
80   if (drmdpy->base.own_dpy)
81      wl_display_disconnect(drmdpy->base.dpy);
82
83   ndpy_uninit(ndpy);
84
85   if (drmdpy->fd)
86      close(drmdpy->fd);
87
88   FREE(drmdpy);
89}
90
91static struct wl_buffer *
92wayland_create_drm_buffer(struct wayland_display *display,
93                          struct wayland_surface *surface,
94                          enum native_attachment attachment)
95{
96   struct wayland_drm_display *drmdpy = (struct wayland_drm_display *) display;
97   struct pipe_screen *screen = drmdpy->base.base.screen;
98   struct pipe_resource *resource;
99   struct winsys_handle wsh;
100   uint width, height;
101   enum wl_drm_format format;
102
103   resource = resource_surface_get_single_resource(surface->rsurf, attachment);
104   resource_surface_get_size(surface->rsurf, &width, &height);
105
106   wsh.type = DRM_API_HANDLE_TYPE_SHARED;
107   screen->resource_get_handle(screen, resource, &wsh);
108
109   pipe_resource_reference(&resource, NULL);
110
111   switch (surface->color_format) {
112   case PIPE_FORMAT_B8G8R8A8_UNORM:
113      format = WL_DRM_FORMAT_ARGB8888;
114      break;
115   case PIPE_FORMAT_B8G8R8X8_UNORM:
116      format = WL_DRM_FORMAT_XRGB8888;
117      break;
118   default:
119      return NULL;
120      break;
121   }
122
123   return wl_drm_create_buffer(drmdpy->wl_drm, wsh.handle,
124                               width, height, wsh.stride, format);
125}
126
127static void
128drm_handle_device(void *data, struct wl_drm *drm, const char *device)
129{
130   struct wayland_drm_display *drmdpy = data;
131   drm_magic_t magic;
132
133   drmdpy->device_name = strdup(device);
134   if (!drmdpy->device_name)
135      return;
136
137#ifdef O_CLOEXEC
138   drmdpy->fd = open(drmdpy->device_name, O_RDWR | O_CLOEXEC);
139   if (drmdpy->fd == -1 && errno == EINVAL)
140#endif
141   {
142      drmdpy->fd = open(drmdpy->device_name, O_RDWR);
143      if (drmdpy->fd != -1)
144         fcntl(drmdpy->fd, F_SETFD, fcntl(drmdpy->fd, F_GETFD) | FD_CLOEXEC);
145   }
146   if (drmdpy->fd == -1) {
147      _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
148              drmdpy->device_name, strerror(errno));
149      return;
150   }
151
152   drmGetMagic(drmdpy->fd, &magic);
153   wl_drm_authenticate(drmdpy->wl_drm, magic);
154}
155
156static void
157drm_handle_format(void *data, struct wl_drm *drm, uint32_t format)
158{
159   struct wayland_drm_display *drmdpy = data;
160
161   switch (format) {
162   case WL_DRM_FORMAT_ARGB8888:
163      drmdpy->base.formats |= HAS_ARGB8888;
164      break;
165   case WL_DRM_FORMAT_XRGB8888:
166      drmdpy->base.formats |= HAS_XRGB8888;
167      break;
168   }
169}
170
171static void
172drm_handle_authenticated(void *data, struct wl_drm *drm)
173{
174   struct wayland_drm_display *drmdpy = data;
175
176   drmdpy->authenticated = true;
177}
178
179static const struct wl_drm_listener drm_listener = {
180   drm_handle_device,
181   drm_handle_format,
182   drm_handle_authenticated
183};
184
185static void
186registry_handle_global(void *data, struct wl_registry *registry, uint32_t name,
187                       const char *interface, uint32_t version)
188{
189   struct wayland_drm_display *drmdpy = data;
190
191   if (strcmp(interface, "wl_drm") == 0) {
192      drmdpy->wl_drm = wl_registry_bind(registry, name, &wl_drm_interface, 1);
193      wl_drm_add_listener(drmdpy->wl_drm, &drm_listener, drmdpy);
194   }
195}
196
197static const struct wl_registry_listener registry_listener = {
198       registry_handle_global
199};
200
201static boolean
202wayland_drm_display_init_screen(struct native_display *ndpy)
203{
204   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
205
206   drmdpy->base.queue = wl_display_create_queue(drmdpy->base.dpy);
207   drmdpy->base.registry = wl_display_get_registry(drmdpy->base.dpy);
208   wl_proxy_set_queue((struct wl_proxy *) drmdpy->base.registry,
209                      drmdpy->base.queue);
210   wl_registry_add_listener(drmdpy->base.registry, &registry_listener, drmdpy);
211   if (wayland_roundtrip(&drmdpy->base) < 0 || drmdpy->wl_drm == NULL)
212      return FALSE;
213
214   wl_drm_add_listener(drmdpy->wl_drm, &drm_listener, drmdpy);
215   if (wayland_roundtrip(&drmdpy->base) < 0 || drmdpy->fd == -1)
216      return FALSE;
217
218   if (wayland_roundtrip(&drmdpy->base) < 0 || !drmdpy->authenticated)
219      return FALSE;
220
221   if (drmdpy->base.formats == 0)
222      return FALSE;
223
224   drmdpy->base.base.screen =
225      drmdpy->event_handler->new_drm_screen(&drmdpy->base.base,
226                                            NULL, drmdpy->fd);
227   if (!drmdpy->base.base.screen) {
228      _eglLog(_EGL_WARNING, "failed to create DRM screen");
229      return FALSE;
230   }
231
232   return TRUE;
233}
234
235static struct native_display_buffer wayland_drm_display_buffer = {
236   /* use the helpers */
237   drm_display_import_native_buffer,
238   drm_display_export_native_buffer
239};
240
241static int
242wayland_drm_display_authenticate(void *user_data, uint32_t magic)
243{
244   struct native_display *ndpy = user_data;
245   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
246   boolean current_authenticate, authenticated;
247
248   current_authenticate = drmdpy->authenticated;
249
250   wl_drm_authenticate(drmdpy->wl_drm, magic);
251   wl_display_roundtrip(drmdpy->base.dpy);
252   authenticated = drmdpy->authenticated;
253
254   drmdpy->authenticated = current_authenticate;
255
256   return authenticated ? 0 : -1;
257}
258
259static struct wayland_drm_callbacks wl_drm_callbacks = {
260   wayland_drm_display_authenticate,
261   egl_g3d_wl_drm_helper_reference_buffer,
262   egl_g3d_wl_drm_helper_unreference_buffer
263};
264
265static boolean
266wayland_drm_display_bind_wayland_display(struct native_display *ndpy,
267                                         struct wl_display *wl_dpy)
268{
269   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
270
271   if (drmdpy->wl_server_drm)
272      return FALSE;
273
274   drmdpy->wl_server_drm =
275      wayland_drm_init(wl_dpy, drmdpy->device_name,
276                       &wl_drm_callbacks, ndpy);
277
278   if (!drmdpy->wl_server_drm)
279      return FALSE;
280
281   return TRUE;
282}
283
284static boolean
285wayland_drm_display_unbind_wayland_display(struct native_display *ndpy,
286                                           struct wl_display *wl_dpy)
287{
288   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
289
290   if (!drmdpy->wl_server_drm)
291      return FALSE;
292
293   wayland_drm_uninit(drmdpy->wl_server_drm);
294   drmdpy->wl_server_drm = NULL;
295
296   return TRUE;
297}
298
299static struct native_display_wayland_bufmgr wayland_drm_display_wayland_bufmgr = {
300   wayland_drm_display_bind_wayland_display,
301   wayland_drm_display_unbind_wayland_display,
302   egl_g3d_wl_drm_common_wl_buffer_get_resource,
303   egl_g3d_wl_drm_common_query_buffer
304};
305
306
307struct wayland_display *
308wayland_create_drm_display(struct wl_display *dpy,
309                           const struct native_event_handler *event_handler)
310{
311   struct wayland_drm_display *drmdpy;
312
313   drmdpy = CALLOC_STRUCT(wayland_drm_display);
314   if (!drmdpy)
315      return NULL;
316
317   drmdpy->event_handler = event_handler;
318
319   drmdpy->base.dpy = dpy;
320   if (!drmdpy->base.dpy) {
321      wayland_drm_display_destroy(&drmdpy->base.base);
322      return NULL;
323   }
324
325   drmdpy->base.base.init_screen = wayland_drm_display_init_screen;
326   drmdpy->base.base.destroy = wayland_drm_display_destroy;
327   drmdpy->base.base.buffer = &wayland_drm_display_buffer;
328   drmdpy->base.base.wayland_bufmgr = &wayland_drm_display_wayland_bufmgr;
329
330   drmdpy->base.create_buffer = wayland_create_drm_buffer;
331
332   return &drmdpy->base;
333}
334
335/* vim: set sw=3 ts=8 sts=3 expandtab: */
336