native_drm.c revision b89bca6d8b84e7922f44258c41e37997775f98c9 
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->fd)
75      close(drmdpy->fd);
76   if (drmdpy->wl_drm)
77      wl_drm_destroy(drmdpy->wl_drm);
78   if (drmdpy->device_name)
79      FREE(drmdpy->device_name);
80   if (drmdpy->base.config)
81      FREE(drmdpy->base.config);
82   if (drmdpy->base.own_dpy)
83      wl_display_destroy(drmdpy->base.dpy);
84
85   ndpy_uninit(ndpy);
86
87   FREE(drmdpy);
88}
89
90static struct wl_buffer *
91wayland_create_drm_buffer(struct wayland_display *display,
92                          struct wayland_surface *surface,
93                          enum native_attachment attachment)
94{
95   struct wayland_drm_display *drmdpy = (struct wayland_drm_display *) display;
96   struct pipe_screen *screen = drmdpy->base.base.screen;
97   struct pipe_resource *resource;
98   struct winsys_handle wsh;
99   uint width, height;
100   struct wl_visual *visual;
101
102   resource = resource_surface_get_single_resource(surface->rsurf, attachment);
103   resource_surface_get_size(surface->rsurf, &width, &height);
104
105   wsh.type = DRM_API_HANDLE_TYPE_SHARED;
106   screen->resource_get_handle(screen, resource, &wsh);
107
108   pipe_resource_reference(&resource, NULL);
109
110   switch (surface->type) {
111   case WL_WINDOW_SURFACE:
112      visual = surface->win->visual;
113      break;
114   case WL_PIXMAP_SURFACE:
115      visual = surface->pix->visual;
116      break;
117   default:
118      return NULL;
119   }
120
121   return wl_drm_create_buffer(drmdpy->wl_drm, wsh.handle,
122                               width, height, wsh.stride, visual);
123}
124
125static void
126drm_handle_device(void *data, struct wl_drm *drm, const char *device)
127{
128   struct wayland_drm_display *drmdpy = data;
129   drm_magic_t magic;
130
131   drmdpy->device_name = strdup(device);
132   if (!drmdpy->device_name)
133      return;
134
135   drmdpy->fd = open(drmdpy->device_name, O_RDWR);
136   if (drmdpy->fd == -1) {
137      _eglLog(_EGL_WARNING, "wayland-egl: could not open %s (%s)",
138              drmdpy->device_name, strerror(errno));
139      return;
140   }
141
142   drmGetMagic(drmdpy->fd, &magic);
143   wl_drm_authenticate(drmdpy->wl_drm, magic);
144}
145
146static void
147drm_handle_authenticated(void *data, struct wl_drm *drm)
148{
149   struct wayland_drm_display *drmdpy = data;
150
151   drmdpy->authenticated = true;
152}
153
154static const struct wl_drm_listener drm_listener = {
155   drm_handle_device,
156   drm_handle_authenticated
157};
158
159static boolean
160wayland_drm_display_init_screen(struct native_display *ndpy)
161{
162   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
163   uint32_t id;
164
165   id = wl_display_get_global(drmdpy->base.dpy, "wl_drm", 1);
166   if (id == 0)
167      wl_display_roundtrip(drmdpy->base.dpy);
168   id = wl_display_get_global(drmdpy->base.dpy, "wl_drm", 1);
169   if (id == 0)
170      return FALSE;
171
172   drmdpy->wl_drm = wl_display_bind(drmdpy->base.dpy, id, &wl_drm_interface);
173   if (!drmdpy->wl_drm)
174      return FALSE;
175
176   wl_drm_add_listener(drmdpy->wl_drm, &drm_listener, drmdpy);
177   wl_display_roundtrip(drmdpy->base.dpy);
178   if (drmdpy->fd == -1)
179      return FALSE;
180
181   wl_display_roundtrip(drmdpy->base.dpy);
182   if (!drmdpy->authenticated)
183      return FALSE;
184
185   drmdpy->base.base.screen =
186      drmdpy->event_handler->new_drm_screen(&drmdpy->base.base,
187                                            NULL, drmdpy->fd);
188   if (!drmdpy->base.base.screen) {
189      _eglLog(_EGL_WARNING, "failed to create DRM screen");
190      return FALSE;
191   }
192
193   return TRUE;
194}
195
196static struct native_display_buffer wayland_drm_display_buffer = {
197   /* use the helpers */
198   drm_display_import_native_buffer,
199   drm_display_export_native_buffer
200};
201
202static int
203wayland_drm_display_authenticate(void *user_data, uint32_t magic)
204{
205   struct native_display *ndpy = user_data;
206   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
207   boolean current_authenticate, authenticated;
208
209   current_authenticate = drmdpy->authenticated;
210
211   wl_drm_authenticate(drmdpy->wl_drm, magic);
212   wl_display_roundtrip(drmdpy->base.dpy);
213   authenticated = drmdpy->authenticated;
214
215   drmdpy->authenticated = current_authenticate;
216
217   return authenticated ? 0 : -1;
218}
219
220static struct wayland_drm_callbacks wl_drm_callbacks = {
221   wayland_drm_display_authenticate,
222   egl_g3d_wl_drm_helper_reference_buffer,
223   egl_g3d_wl_drm_helper_unreference_buffer
224};
225
226static boolean
227wayland_drm_display_bind_wayland_display(struct native_display *ndpy,
228                                         struct wl_display *wl_dpy)
229{
230   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
231
232   if (drmdpy->wl_server_drm)
233      return FALSE;
234
235   drmdpy->wl_server_drm =
236      wayland_drm_init(wl_dpy, drmdpy->device_name,
237                       &wl_drm_callbacks, ndpy);
238
239   if (!drmdpy->wl_server_drm)
240      return FALSE;
241
242   return TRUE;
243}
244
245static boolean
246wayland_drm_display_unbind_wayland_display(struct native_display *ndpy,
247                                           struct wl_display *wl_dpy)
248{
249   struct wayland_drm_display *drmdpy = wayland_drm_display(ndpy);
250
251   if (!drmdpy->wl_server_drm)
252      return FALSE;
253
254   wayland_drm_uninit(drmdpy->wl_server_drm);
255   drmdpy->wl_server_drm = NULL;
256
257   return TRUE;
258}
259
260static struct native_display_wayland_bufmgr wayland_drm_display_wayland_bufmgr = {
261   wayland_drm_display_bind_wayland_display,
262   wayland_drm_display_unbind_wayland_display,
263   egl_g3d_wl_drm_common_wl_buffer_get_resource
264};
265
266
267struct wayland_display *
268wayland_create_drm_display(struct wl_display *dpy,
269                           const struct native_event_handler *event_handler)
270{
271   struct wayland_drm_display *drmdpy;
272
273   drmdpy = CALLOC_STRUCT(wayland_drm_display);
274   if (!drmdpy)
275      return NULL;
276
277   drmdpy->event_handler = event_handler;
278
279   drmdpy->base.dpy = dpy;
280   if (!drmdpy->base.dpy) {
281      wayland_drm_display_destroy(&drmdpy->base.base);
282      return NULL;
283   }
284
285   drmdpy->base.base.init_screen = wayland_drm_display_init_screen;
286   drmdpy->base.base.destroy = wayland_drm_display_destroy;
287   drmdpy->base.base.buffer = &wayland_drm_display_buffer;
288   drmdpy->base.base.wayland_bufmgr = &wayland_drm_display_wayland_bufmgr;
289
290   drmdpy->base.create_buffer = wayland_create_drm_buffer;
291
292   return &drmdpy->base;
293}
294
295/* vim: set sw=3 ts=8 sts=3 expandtab: */
296