1 /**************************************************************************
2 *
3 * Copyright 2009 Younes Manton.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28 /* directly referenced from target Makefile, because of X dependencies */
29
30 #include <sys/types.h>
31 #include <sys/stat.h>
32
33 #include <X11/Xlib-xcb.h>
34 #include <X11/extensions/dri2tokens.h>
35 #include <xcb/dri2.h>
36 #include <xf86drm.h>
37 #include <errno.h>
38
39 #include "loader.h"
40
41 #include "pipe/p_screen.h"
42 #include "pipe/p_context.h"
43 #include "pipe/p_state.h"
44 #include "pipe-loader/pipe_loader.h"
45 #include "frontend/drm_driver.h"
46
47 #include "util/u_memory.h"
48 #include "util/crc32.h"
49 #include "util/u_hash_table.h"
50 #include "util/u_inlines.h"
51
52 #include "vl/vl_compositor.h"
53 #include "vl/vl_winsys.h"
54
55 struct vl_dri_screen
56 {
57 struct vl_screen base;
58 xcb_connection_t *conn;
59 xcb_drawable_t drawable;
60
61 unsigned width, height;
62
63 bool current_buffer;
64 uint32_t buffer_names[2];
65 struct u_rect dirty_areas[2];
66
67 bool flushed;
68 xcb_dri2_swap_buffers_cookie_t swap_cookie;
69 xcb_dri2_wait_sbc_cookie_t wait_cookie;
70 xcb_dri2_get_buffers_cookie_t buffers_cookie;
71
72 int64_t last_ust, ns_frame, last_msc, next_msc;
73 };
74
75 static const unsigned attachments[1] = { XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT };
76
77 static void vl_dri2_screen_destroy(struct vl_screen *vscreen);
78
79 static void
vl_dri2_handle_stamps(struct vl_dri_screen * scrn,uint32_t ust_hi,uint32_t ust_lo,uint32_t msc_hi,uint32_t msc_lo)80 vl_dri2_handle_stamps(struct vl_dri_screen *scrn,
81 uint32_t ust_hi, uint32_t ust_lo,
82 uint32_t msc_hi, uint32_t msc_lo)
83 {
84 int64_t ust = ((((uint64_t)ust_hi) << 32) | ust_lo) * 1000;
85 int64_t msc = (((uint64_t)msc_hi) << 32) | msc_lo;
86
87 if (scrn->last_ust && (ust > scrn->last_ust) &&
88 scrn->last_msc && (msc > scrn->last_msc))
89 scrn->ns_frame = (ust - scrn->last_ust) / (msc - scrn->last_msc);
90
91 scrn->last_ust = ust;
92 scrn->last_msc = msc;
93 }
94
95 static xcb_dri2_get_buffers_reply_t *
vl_dri2_get_flush_reply(struct vl_dri_screen * scrn)96 vl_dri2_get_flush_reply(struct vl_dri_screen *scrn)
97 {
98 xcb_dri2_wait_sbc_reply_t *wait_sbc_reply;
99
100 assert(scrn);
101
102 if (!scrn->flushed)
103 return NULL;
104
105 scrn->flushed = false;
106
107 free(xcb_dri2_swap_buffers_reply(scrn->conn, scrn->swap_cookie, NULL));
108
109 wait_sbc_reply = xcb_dri2_wait_sbc_reply(scrn->conn, scrn->wait_cookie, NULL);
110 if (!wait_sbc_reply)
111 return NULL;
112 vl_dri2_handle_stamps(scrn, wait_sbc_reply->ust_hi, wait_sbc_reply->ust_lo,
113 wait_sbc_reply->msc_hi, wait_sbc_reply->msc_lo);
114 free(wait_sbc_reply);
115
116 return xcb_dri2_get_buffers_reply(scrn->conn, scrn->buffers_cookie, NULL);
117 }
118
119 static void
vl_dri2_flush_frontbuffer(struct pipe_screen * screen,struct pipe_resource * resource,unsigned level,unsigned layer,void * context_private,struct pipe_box * sub_box)120 vl_dri2_flush_frontbuffer(struct pipe_screen *screen,
121 struct pipe_resource *resource,
122 unsigned level, unsigned layer,
123 void *context_private, struct pipe_box *sub_box)
124 {
125 struct vl_dri_screen *scrn = (struct vl_dri_screen *)context_private;
126 uint32_t msc_hi, msc_lo;
127
128 assert(screen);
129 assert(resource);
130 assert(context_private);
131
132 free(vl_dri2_get_flush_reply(scrn));
133
134 msc_hi = scrn->next_msc >> 32;
135 msc_lo = scrn->next_msc & 0xFFFFFFFF;
136
137 scrn->swap_cookie = xcb_dri2_swap_buffers_unchecked(scrn->conn, scrn->drawable,
138 msc_hi, msc_lo, 0, 0, 0, 0);
139 scrn->wait_cookie = xcb_dri2_wait_sbc_unchecked(scrn->conn, scrn->drawable, 0, 0);
140 scrn->buffers_cookie = xcb_dri2_get_buffers_unchecked(scrn->conn, scrn->drawable,
141 1, 1, attachments);
142
143 scrn->flushed = true;
144 scrn->current_buffer = !scrn->current_buffer;
145 }
146
147 static void
vl_dri2_destroy_drawable(struct vl_dri_screen * scrn)148 vl_dri2_destroy_drawable(struct vl_dri_screen *scrn)
149 {
150 xcb_void_cookie_t destroy_cookie;
151 if (scrn->drawable) {
152 free(vl_dri2_get_flush_reply(scrn));
153 destroy_cookie = xcb_dri2_destroy_drawable_checked(scrn->conn, scrn->drawable);
154 /* ignore any error here, since the drawable can be destroyed long ago */
155 free(xcb_request_check(scrn->conn, destroy_cookie));
156 }
157 }
158
159 static void
vl_dri2_set_drawable(struct vl_dri_screen * scrn,Drawable drawable)160 vl_dri2_set_drawable(struct vl_dri_screen *scrn, Drawable drawable)
161 {
162 assert(scrn);
163 assert(drawable);
164
165 if (scrn->drawable == drawable)
166 return;
167
168 vl_dri2_destroy_drawable(scrn);
169
170 xcb_dri2_create_drawable(scrn->conn, drawable);
171 scrn->current_buffer = false;
172 vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
173 vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
174 scrn->drawable = drawable;
175 }
176
177 static struct pipe_resource *
vl_dri2_screen_texture_from_drawable(struct vl_screen * vscreen,void * drawable)178 vl_dri2_screen_texture_from_drawable(struct vl_screen *vscreen, void *drawable)
179 {
180 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
181
182 struct winsys_handle dri2_handle;
183 struct pipe_resource templ, *tex;
184
185 xcb_dri2_get_buffers_reply_t *reply;
186 xcb_dri2_dri2_buffer_t *buffers, *back_left;
187
188 unsigned depth = ((xcb_screen_t *)(vscreen->xcb_screen))->root_depth;
189 unsigned i;
190
191 assert(scrn);
192
193 vl_dri2_set_drawable(scrn, (Drawable)drawable);
194 reply = vl_dri2_get_flush_reply(scrn);
195 if (!reply) {
196 xcb_dri2_get_buffers_cookie_t cookie;
197 cookie = xcb_dri2_get_buffers_unchecked(scrn->conn, (Drawable)drawable,
198 1, 1, attachments);
199 reply = xcb_dri2_get_buffers_reply(scrn->conn, cookie, NULL);
200 }
201 if (!reply)
202 return NULL;
203
204 buffers = xcb_dri2_get_buffers_buffers(reply);
205 if (!buffers) {
206 free(reply);
207 return NULL;
208 }
209
210 for (i = 0; i < reply->count; ++i) {
211 if (buffers[i].attachment == XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT) {
212 back_left = &buffers[i];
213 break;
214 }
215 }
216
217 if (i == reply->count) {
218 free(reply);
219 return NULL;
220 }
221
222 if (reply->width != scrn->width || reply->height != scrn->height) {
223 vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
224 vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
225 scrn->width = reply->width;
226 scrn->height = reply->height;
227
228 } else if (back_left->name != scrn->buffer_names[scrn->current_buffer]) {
229 vl_compositor_reset_dirty_area(&scrn->dirty_areas[scrn->current_buffer]);
230 scrn->buffer_names[scrn->current_buffer] = back_left->name;
231 }
232
233 memset(&dri2_handle, 0, sizeof(dri2_handle));
234 dri2_handle.type = WINSYS_HANDLE_TYPE_SHARED;
235 dri2_handle.handle = back_left->name;
236 dri2_handle.stride = back_left->pitch;
237
238 memset(&templ, 0, sizeof(templ));
239 templ.target = PIPE_TEXTURE_2D;
240 templ.format = vl_dri2_format_for_depth(vscreen, depth);
241 templ.last_level = 0;
242 templ.width0 = reply->width;
243 templ.height0 = reply->height;
244 templ.depth0 = 1;
245 templ.array_size = 1;
246 templ.usage = PIPE_USAGE_DEFAULT;
247 templ.bind = PIPE_BIND_RENDER_TARGET;
248 templ.flags = 0;
249
250 tex = scrn->base.pscreen->resource_from_handle(scrn->base.pscreen, &templ,
251 &dri2_handle,
252 PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
253 free(reply);
254
255 return tex;
256 }
257
258 static struct u_rect *
vl_dri2_screen_get_dirty_area(struct vl_screen * vscreen)259 vl_dri2_screen_get_dirty_area(struct vl_screen *vscreen)
260 {
261 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
262 assert(scrn);
263 return &scrn->dirty_areas[scrn->current_buffer];
264 }
265
266 static uint64_t
vl_dri2_screen_get_timestamp(struct vl_screen * vscreen,void * drawable)267 vl_dri2_screen_get_timestamp(struct vl_screen *vscreen, void *drawable)
268 {
269 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
270 xcb_dri2_get_msc_cookie_t cookie;
271 xcb_dri2_get_msc_reply_t *reply;
272
273 assert(scrn);
274
275 vl_dri2_set_drawable(scrn, (Drawable)drawable);
276 if (!scrn->last_ust) {
277 cookie = xcb_dri2_get_msc_unchecked(scrn->conn, (Drawable)drawable);
278 reply = xcb_dri2_get_msc_reply(scrn->conn, cookie, NULL);
279
280 if (reply) {
281 vl_dri2_handle_stamps(scrn, reply->ust_hi, reply->ust_lo,
282 reply->msc_hi, reply->msc_lo);
283 free(reply);
284 }
285 }
286 return scrn->last_ust;
287 }
288
289 static void
vl_dri2_screen_set_next_timestamp(struct vl_screen * vscreen,uint64_t stamp)290 vl_dri2_screen_set_next_timestamp(struct vl_screen *vscreen, uint64_t stamp)
291 {
292 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
293 assert(scrn);
294 if (stamp && scrn->last_ust && scrn->ns_frame && scrn->last_msc)
295 scrn->next_msc = ((int64_t)stamp - scrn->last_ust + scrn->ns_frame/2) /
296 scrn->ns_frame + scrn->last_msc;
297 else
298 scrn->next_msc = 0;
299 }
300
301 static void *
vl_dri2_screen_get_private(struct vl_screen * vscreen)302 vl_dri2_screen_get_private(struct vl_screen *vscreen)
303 {
304 return vscreen;
305 }
306
307 static xcb_screen_t *
get_xcb_screen(xcb_screen_iterator_t iter,int screen)308 get_xcb_screen(xcb_screen_iterator_t iter, int screen)
309 {
310 for (; iter.rem; --screen, xcb_screen_next(&iter))
311 if (screen == 0)
312 return iter.data;
313
314 return NULL;
315 }
316
317 static xcb_visualtype_t *
get_xcb_visualtype_for_depth(struct vl_screen * vscreen,int depth)318 get_xcb_visualtype_for_depth(struct vl_screen *vscreen, int depth)
319 {
320 xcb_visualtype_iterator_t visual_iter;
321 xcb_screen_t *screen = vscreen->xcb_screen;
322 xcb_depth_iterator_t depth_iter;
323
324 if (!screen)
325 return NULL;
326
327 depth_iter = xcb_screen_allowed_depths_iterator(screen);
328 for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
329 if (depth_iter.data->depth != depth)
330 continue;
331
332 visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
333 if (visual_iter.rem)
334 return visual_iter.data;
335 }
336
337 return NULL;
338 }
339
340 static uint32_t
get_red_mask_for_depth(struct vl_screen * vscreen,int depth)341 get_red_mask_for_depth(struct vl_screen *vscreen, int depth)
342 {
343 xcb_visualtype_t *visual = get_xcb_visualtype_for_depth(vscreen, depth);
344
345 if (visual) {
346 return visual->red_mask;
347 }
348
349 return 0;
350 }
351
352 uint32_t
vl_dri2_format_for_depth(struct vl_screen * vscreen,int depth)353 vl_dri2_format_for_depth(struct vl_screen *vscreen, int depth)
354 {
355 switch (depth) {
356 case 24:
357 return PIPE_FORMAT_B8G8R8X8_UNORM;
358 case 30:
359 /* Different preferred formats for different hw */
360 if (get_red_mask_for_depth(vscreen, 30) == 0x3ff)
361 return PIPE_FORMAT_R10G10B10X2_UNORM;
362 else
363 return PIPE_FORMAT_B10G10R10X2_UNORM;
364 default:
365 return PIPE_FORMAT_NONE;
366 }
367 }
368
369 struct vl_screen *
vl_dri2_screen_create(Display * display,int screen)370 vl_dri2_screen_create(Display *display, int screen)
371 {
372 struct vl_dri_screen *scrn;
373 const xcb_query_extension_reply_t *extension;
374 xcb_dri2_query_version_cookie_t dri2_query_cookie;
375 xcb_dri2_query_version_reply_t *dri2_query = NULL;
376 xcb_dri2_connect_cookie_t connect_cookie;
377 xcb_dri2_connect_reply_t *connect = NULL;
378 xcb_dri2_authenticate_cookie_t authenticate_cookie;
379 xcb_dri2_authenticate_reply_t *authenticate = NULL;
380 xcb_screen_iterator_t s;
381 xcb_generic_error_t *error = NULL;
382 char *device_name;
383 int fd, device_name_length;
384 unsigned driverType;
385
386 drm_magic_t magic;
387
388 assert(display);
389
390 scrn = CALLOC_STRUCT(vl_dri_screen);
391 if (!scrn)
392 return NULL;
393
394 scrn->conn = XGetXCBConnection(display);
395 if (!scrn->conn)
396 goto free_screen;
397
398 xcb_prefetch_extension_data(scrn->conn, &xcb_dri2_id);
399
400 extension = xcb_get_extension_data(scrn->conn, &xcb_dri2_id);
401 if (!(extension && extension->present))
402 goto free_screen;
403
404 dri2_query_cookie = xcb_dri2_query_version (scrn->conn,
405 XCB_DRI2_MAJOR_VERSION,
406 XCB_DRI2_MINOR_VERSION);
407 dri2_query = xcb_dri2_query_version_reply (scrn->conn, dri2_query_cookie, &error);
408 if (dri2_query == NULL || error != NULL || dri2_query->minor_version < 2)
409 goto free_query;
410
411 s = xcb_setup_roots_iterator(xcb_get_setup(scrn->conn));
412 scrn->base.xcb_screen = get_xcb_screen(s, screen);
413 if (!scrn->base.xcb_screen)
414 goto free_query;
415
416 driverType = XCB_DRI2_DRIVER_TYPE_DRI;
417 {
418 char *prime = getenv("DRI_PRIME");
419 if (prime) {
420 unsigned primeid;
421 errno = 0;
422 primeid = strtoul(prime, NULL, 0);
423 if (errno == 0)
424 driverType |=
425 ((primeid & DRI2DriverPrimeMask) << DRI2DriverPrimeShift);
426 }
427 }
428
429 connect_cookie = xcb_dri2_connect_unchecked(
430 scrn->conn, ((xcb_screen_t *)(scrn->base.xcb_screen))->root, driverType);
431 connect = xcb_dri2_connect_reply(scrn->conn, connect_cookie, NULL);
432 if (connect == NULL ||
433 connect->driver_name_length + connect->device_name_length == 0)
434 goto free_connect;
435
436 device_name_length = xcb_dri2_connect_device_name_length(connect);
437 device_name = CALLOC(1, device_name_length + 1);
438 if (!device_name)
439 goto free_connect;
440 memcpy(device_name, xcb_dri2_connect_device_name(connect), device_name_length);
441 fd = loader_open_device(device_name);
442 free(device_name);
443
444 if (fd < 0)
445 goto free_connect;
446
447 if (drmGetMagic(fd, &magic))
448 goto close_fd;
449
450 authenticate_cookie = xcb_dri2_authenticate_unchecked(
451 scrn->conn, ((xcb_screen_t *)(scrn->base.xcb_screen))->root, magic);
452 authenticate = xcb_dri2_authenticate_reply(scrn->conn, authenticate_cookie, NULL);
453
454 if (authenticate == NULL || !authenticate->authenticated)
455 goto free_authenticate;
456
457 if (pipe_loader_drm_probe_fd(&scrn->base.dev, fd))
458 scrn->base.pscreen = pipe_loader_create_screen(scrn->base.dev);
459
460 if (!scrn->base.pscreen)
461 goto release_pipe;
462
463 scrn->base.destroy = vl_dri2_screen_destroy;
464 scrn->base.texture_from_drawable = vl_dri2_screen_texture_from_drawable;
465 scrn->base.get_dirty_area = vl_dri2_screen_get_dirty_area;
466 scrn->base.get_timestamp = vl_dri2_screen_get_timestamp;
467 scrn->base.set_next_timestamp = vl_dri2_screen_set_next_timestamp;
468 scrn->base.get_private = vl_dri2_screen_get_private;
469 scrn->base.pscreen->flush_frontbuffer = vl_dri2_flush_frontbuffer;
470 vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
471 vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
472
473 /* The pipe loader duplicates the fd */
474 close(fd);
475 free(authenticate);
476 free(connect);
477 free(dri2_query);
478 free(error);
479
480 return &scrn->base;
481
482 release_pipe:
483 if (scrn->base.dev)
484 pipe_loader_release(&scrn->base.dev, 1);
485 free_authenticate:
486 free(authenticate);
487 close_fd:
488 close(fd);
489 free_connect:
490 free(connect);
491 free_query:
492 free(dri2_query);
493 free(error);
494
495 free_screen:
496 FREE(scrn);
497 return NULL;
498 }
499
500 static void
vl_dri2_screen_destroy(struct vl_screen * vscreen)501 vl_dri2_screen_destroy(struct vl_screen *vscreen)
502 {
503 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
504
505 assert(vscreen);
506
507 if (scrn->flushed) {
508 free(xcb_dri2_swap_buffers_reply(scrn->conn, scrn->swap_cookie, NULL));
509 free(xcb_dri2_wait_sbc_reply(scrn->conn, scrn->wait_cookie, NULL));
510 free(xcb_dri2_get_buffers_reply(scrn->conn, scrn->buffers_cookie, NULL));
511 }
512
513 vl_dri2_destroy_drawable(scrn);
514 scrn->base.pscreen->destroy(scrn->base.pscreen);
515 pipe_loader_release(&scrn->base.dev, 1);
516 /* There is no user provided fd */
517 FREE(scrn);
518 }
519