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 #include "drm-uapi/drm_fourcc.h"
56
57 struct vl_dri_screen
58 {
59 struct vl_screen base;
60 xcb_connection_t *conn;
61 xcb_drawable_t drawable;
62
63 unsigned width, height;
64
65 bool current_buffer;
66 uint32_t buffer_names[2];
67 struct u_rect dirty_areas[2];
68
69 bool flushed;
70 xcb_dri2_swap_buffers_cookie_t swap_cookie;
71 xcb_dri2_wait_sbc_cookie_t wait_cookie;
72 xcb_dri2_get_buffers_cookie_t buffers_cookie;
73
74 int64_t last_ust, ns_frame, last_msc, next_msc;
75 };
76
77 static const unsigned attachments[1] = { XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT };
78
79 static void vl_dri2_screen_destroy(struct vl_screen *vscreen);
80
81 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)82 vl_dri2_handle_stamps(struct vl_dri_screen *scrn,
83 uint32_t ust_hi, uint32_t ust_lo,
84 uint32_t msc_hi, uint32_t msc_lo)
85 {
86 int64_t ust = ((((uint64_t)ust_hi) << 32) | ust_lo) * 1000;
87 int64_t msc = (((uint64_t)msc_hi) << 32) | msc_lo;
88
89 if (scrn->last_ust && (ust > scrn->last_ust) &&
90 scrn->last_msc && (msc > scrn->last_msc))
91 scrn->ns_frame = (ust - scrn->last_ust) / (msc - scrn->last_msc);
92
93 scrn->last_ust = ust;
94 scrn->last_msc = msc;
95 }
96
97 static xcb_dri2_get_buffers_reply_t *
vl_dri2_get_flush_reply(struct vl_dri_screen * scrn)98 vl_dri2_get_flush_reply(struct vl_dri_screen *scrn)
99 {
100 xcb_dri2_wait_sbc_reply_t *wait_sbc_reply;
101
102 assert(scrn);
103
104 if (!scrn->flushed)
105 return NULL;
106
107 scrn->flushed = false;
108
109 free(xcb_dri2_swap_buffers_reply(scrn->conn, scrn->swap_cookie, NULL));
110
111 wait_sbc_reply = xcb_dri2_wait_sbc_reply(scrn->conn, scrn->wait_cookie, NULL);
112 if (!wait_sbc_reply)
113 return NULL;
114 vl_dri2_handle_stamps(scrn, wait_sbc_reply->ust_hi, wait_sbc_reply->ust_lo,
115 wait_sbc_reply->msc_hi, wait_sbc_reply->msc_lo);
116 free(wait_sbc_reply);
117
118 return xcb_dri2_get_buffers_reply(scrn->conn, scrn->buffers_cookie, NULL);
119 }
120
121 static void
vl_dri2_flush_frontbuffer(struct pipe_screen * screen,struct pipe_context * pipe,struct pipe_resource * resource,unsigned level,unsigned layer,void * context_private,struct pipe_box * sub_box)122 vl_dri2_flush_frontbuffer(struct pipe_screen *screen,
123 struct pipe_context *pipe,
124 struct pipe_resource *resource,
125 unsigned level, unsigned layer,
126 void *context_private, struct pipe_box *sub_box)
127 {
128 struct vl_dri_screen *scrn = (struct vl_dri_screen *)context_private;
129 uint32_t msc_hi, msc_lo;
130
131 assert(screen);
132 assert(resource);
133 assert(context_private);
134
135 free(vl_dri2_get_flush_reply(scrn));
136
137 msc_hi = scrn->next_msc >> 32;
138 msc_lo = scrn->next_msc & 0xFFFFFFFF;
139
140 scrn->swap_cookie = xcb_dri2_swap_buffers_unchecked(scrn->conn, scrn->drawable,
141 msc_hi, msc_lo, 0, 0, 0, 0);
142 scrn->wait_cookie = xcb_dri2_wait_sbc_unchecked(scrn->conn, scrn->drawable, 0, 0);
143 scrn->buffers_cookie = xcb_dri2_get_buffers_unchecked(scrn->conn, scrn->drawable,
144 1, 1, attachments);
145
146 scrn->flushed = true;
147 scrn->current_buffer = !scrn->current_buffer;
148 }
149
150 static void
vl_dri2_destroy_drawable(struct vl_dri_screen * scrn)151 vl_dri2_destroy_drawable(struct vl_dri_screen *scrn)
152 {
153 xcb_void_cookie_t destroy_cookie;
154 if (scrn->drawable) {
155 free(vl_dri2_get_flush_reply(scrn));
156 destroy_cookie = xcb_dri2_destroy_drawable_checked(scrn->conn, scrn->drawable);
157 /* ignore any error here, since the drawable can be destroyed long ago */
158 free(xcb_request_check(scrn->conn, destroy_cookie));
159 }
160 }
161
162 static void
vl_dri2_set_drawable(struct vl_dri_screen * scrn,Drawable drawable)163 vl_dri2_set_drawable(struct vl_dri_screen *scrn, Drawable drawable)
164 {
165 assert(scrn);
166 assert(drawable);
167
168 if (scrn->drawable == drawable)
169 return;
170
171 vl_dri2_destroy_drawable(scrn);
172
173 xcb_dri2_create_drawable(scrn->conn, drawable);
174 scrn->current_buffer = false;
175 vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
176 vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
177 scrn->drawable = drawable;
178 }
179
180 static struct pipe_resource *
vl_dri2_screen_texture_from_drawable(struct vl_screen * vscreen,void * drawable)181 vl_dri2_screen_texture_from_drawable(struct vl_screen *vscreen, void *drawable)
182 {
183 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
184
185 struct winsys_handle dri2_handle;
186 struct pipe_resource templ, *tex;
187
188 xcb_dri2_get_buffers_reply_t *reply;
189 xcb_dri2_dri2_buffer_t *buffers, *back_left = NULL;
190
191 unsigned depth = ((xcb_screen_t *)(vscreen->xcb_screen))->root_depth;
192 unsigned i;
193
194 assert(scrn);
195
196 vl_dri2_set_drawable(scrn, (Drawable)drawable);
197 reply = vl_dri2_get_flush_reply(scrn);
198 if (!reply) {
199 xcb_dri2_get_buffers_cookie_t cookie;
200 cookie = xcb_dri2_get_buffers_unchecked(scrn->conn, (Drawable)drawable,
201 1, 1, attachments);
202 reply = xcb_dri2_get_buffers_reply(scrn->conn, cookie, NULL);
203 }
204 if (!reply)
205 return NULL;
206
207 buffers = xcb_dri2_get_buffers_buffers(reply);
208 if (!buffers) {
209 free(reply);
210 return NULL;
211 }
212
213 for (i = 0; i < reply->count; ++i) {
214 if (buffers[i].attachment == XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT) {
215 back_left = &buffers[i];
216 break;
217 }
218 }
219
220 if (i == reply->count || !back_left) {
221 free(reply);
222 return NULL;
223 }
224
225 if (reply->width != scrn->width || reply->height != scrn->height) {
226 vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
227 vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
228 scrn->width = reply->width;
229 scrn->height = reply->height;
230
231 } else if (back_left->name != scrn->buffer_names[scrn->current_buffer]) {
232 vl_compositor_reset_dirty_area(&scrn->dirty_areas[scrn->current_buffer]);
233 scrn->buffer_names[scrn->current_buffer] = back_left->name;
234 }
235
236 memset(&dri2_handle, 0, sizeof(dri2_handle));
237 dri2_handle.type = WINSYS_HANDLE_TYPE_SHARED;
238 dri2_handle.handle = back_left->name;
239 dri2_handle.stride = back_left->pitch;
240 dri2_handle.modifier = DRM_FORMAT_MOD_INVALID;
241
242 memset(&templ, 0, sizeof(templ));
243 templ.target = PIPE_TEXTURE_2D;
244 templ.format = vl_dri2_format_for_depth(vscreen, depth);
245 templ.last_level = 0;
246 templ.width0 = reply->width;
247 templ.height0 = reply->height;
248 templ.depth0 = 1;
249 templ.array_size = 1;
250 templ.usage = PIPE_USAGE_DEFAULT;
251 templ.bind = PIPE_BIND_RENDER_TARGET;
252 templ.flags = 0;
253
254 tex = scrn->base.pscreen->resource_from_handle(scrn->base.pscreen, &templ,
255 &dri2_handle,
256 PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
257 free(reply);
258
259 return tex;
260 }
261
262 static struct u_rect *
vl_dri2_screen_get_dirty_area(struct vl_screen * vscreen)263 vl_dri2_screen_get_dirty_area(struct vl_screen *vscreen)
264 {
265 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
266 assert(scrn);
267 return &scrn->dirty_areas[scrn->current_buffer];
268 }
269
270 static uint64_t
vl_dri2_screen_get_timestamp(struct vl_screen * vscreen,void * drawable)271 vl_dri2_screen_get_timestamp(struct vl_screen *vscreen, void *drawable)
272 {
273 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
274 xcb_dri2_get_msc_cookie_t cookie;
275 xcb_dri2_get_msc_reply_t *reply;
276
277 assert(scrn);
278
279 vl_dri2_set_drawable(scrn, (Drawable)drawable);
280 if (!scrn->last_ust) {
281 cookie = xcb_dri2_get_msc_unchecked(scrn->conn, (Drawable)drawable);
282 reply = xcb_dri2_get_msc_reply(scrn->conn, cookie, NULL);
283
284 if (reply) {
285 vl_dri2_handle_stamps(scrn, reply->ust_hi, reply->ust_lo,
286 reply->msc_hi, reply->msc_lo);
287 free(reply);
288 }
289 }
290 return scrn->last_ust;
291 }
292
293 static void
vl_dri2_screen_set_next_timestamp(struct vl_screen * vscreen,uint64_t stamp)294 vl_dri2_screen_set_next_timestamp(struct vl_screen *vscreen, uint64_t stamp)
295 {
296 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
297 assert(scrn);
298 if (stamp && scrn->last_ust && scrn->ns_frame && scrn->last_msc)
299 scrn->next_msc = ((int64_t)stamp - scrn->last_ust + scrn->ns_frame/2) /
300 scrn->ns_frame + scrn->last_msc;
301 else
302 scrn->next_msc = 0;
303 }
304
305 static void *
vl_dri2_screen_get_private(struct vl_screen * vscreen)306 vl_dri2_screen_get_private(struct vl_screen *vscreen)
307 {
308 return vscreen;
309 }
310
311 static xcb_screen_t *
get_xcb_screen(xcb_screen_iterator_t iter,int screen)312 get_xcb_screen(xcb_screen_iterator_t iter, int screen)
313 {
314 for (; iter.rem; --screen, xcb_screen_next(&iter))
315 if (screen == 0)
316 return iter.data;
317
318 return NULL;
319 }
320
321 static xcb_visualtype_t *
get_xcb_visualtype_for_depth(struct vl_screen * vscreen,int depth)322 get_xcb_visualtype_for_depth(struct vl_screen *vscreen, int depth)
323 {
324 xcb_visualtype_iterator_t visual_iter;
325 xcb_screen_t *screen = vscreen->xcb_screen;
326 xcb_depth_iterator_t depth_iter;
327
328 if (!screen)
329 return NULL;
330
331 depth_iter = xcb_screen_allowed_depths_iterator(screen);
332 for (; depth_iter.rem; xcb_depth_next(&depth_iter)) {
333 if (depth_iter.data->depth != depth)
334 continue;
335
336 visual_iter = xcb_depth_visuals_iterator(depth_iter.data);
337 if (visual_iter.rem)
338 return visual_iter.data;
339 }
340
341 return NULL;
342 }
343
344 static uint32_t
get_red_mask_for_depth(struct vl_screen * vscreen,int depth)345 get_red_mask_for_depth(struct vl_screen *vscreen, int depth)
346 {
347 xcb_visualtype_t *visual = get_xcb_visualtype_for_depth(vscreen, depth);
348
349 if (visual) {
350 return visual->red_mask;
351 }
352
353 return 0;
354 }
355
356 uint32_t
vl_dri2_format_for_depth(struct vl_screen * vscreen,int depth)357 vl_dri2_format_for_depth(struct vl_screen *vscreen, int depth)
358 {
359 switch (depth) {
360 case 24:
361 return PIPE_FORMAT_B8G8R8X8_UNORM;
362 case 30:
363 /* Different preferred formats for different hw */
364 if (get_red_mask_for_depth(vscreen, 30) == 0x3ff)
365 return PIPE_FORMAT_R10G10B10X2_UNORM;
366 else
367 return PIPE_FORMAT_B10G10R10X2_UNORM;
368 default:
369 return PIPE_FORMAT_NONE;
370 }
371 }
372
373 struct vl_screen *
vl_dri2_screen_create(Display * display,int screen)374 vl_dri2_screen_create(Display *display, int screen)
375 {
376 struct vl_dri_screen *scrn;
377 const xcb_query_extension_reply_t *extension;
378 xcb_dri2_query_version_cookie_t dri2_query_cookie;
379 xcb_dri2_query_version_reply_t *dri2_query = NULL;
380 xcb_dri2_connect_cookie_t connect_cookie;
381 xcb_dri2_connect_reply_t *connect = NULL;
382 xcb_dri2_authenticate_cookie_t authenticate_cookie;
383 xcb_dri2_authenticate_reply_t *authenticate = NULL;
384 xcb_screen_iterator_t s;
385 xcb_generic_error_t *error = NULL;
386 char *device_name;
387 int fd, device_name_length;
388 unsigned driverType;
389
390 drm_magic_t magic;
391
392 assert(display);
393
394 scrn = CALLOC_STRUCT(vl_dri_screen);
395 if (!scrn)
396 return NULL;
397
398 scrn->conn = XGetXCBConnection(display);
399 if (!scrn->conn)
400 goto free_screen;
401
402 xcb_prefetch_extension_data(scrn->conn, &xcb_dri2_id);
403
404 extension = xcb_get_extension_data(scrn->conn, &xcb_dri2_id);
405 if (!(extension && extension->present))
406 goto free_screen;
407
408 dri2_query_cookie = xcb_dri2_query_version (scrn->conn,
409 XCB_DRI2_MAJOR_VERSION,
410 XCB_DRI2_MINOR_VERSION);
411 dri2_query = xcb_dri2_query_version_reply (scrn->conn, dri2_query_cookie, &error);
412 if (dri2_query == NULL || error != NULL || dri2_query->minor_version < 2)
413 goto free_query;
414
415 s = xcb_setup_roots_iterator(xcb_get_setup(scrn->conn));
416 scrn->base.xcb_screen = get_xcb_screen(s, screen);
417 if (!scrn->base.xcb_screen)
418 goto free_query;
419
420 driverType = XCB_DRI2_DRIVER_TYPE_DRI;
421 {
422 char *prime = getenv("DRI_PRIME");
423 if (prime) {
424 unsigned primeid;
425 errno = 0;
426 primeid = strtoul(prime, NULL, 0);
427 if (errno == 0)
428 driverType |=
429 ((primeid & DRI2DriverPrimeMask) << DRI2DriverPrimeShift);
430 }
431 }
432
433 connect_cookie = xcb_dri2_connect_unchecked(
434 scrn->conn, ((xcb_screen_t *)(scrn->base.xcb_screen))->root, driverType);
435 connect = xcb_dri2_connect_reply(scrn->conn, connect_cookie, NULL);
436 if (connect == NULL ||
437 connect->driver_name_length + connect->device_name_length == 0)
438 goto free_connect;
439
440 device_name_length = xcb_dri2_connect_device_name_length(connect);
441 device_name = CALLOC(1, device_name_length + 1);
442 if (!device_name)
443 goto free_connect;
444 memcpy(device_name, xcb_dri2_connect_device_name(connect), device_name_length);
445 fd = loader_open_device(device_name);
446 free(device_name);
447
448 if (fd < 0)
449 goto free_connect;
450
451 if (drmGetMagic(fd, &magic))
452 goto close_fd;
453
454 authenticate_cookie = xcb_dri2_authenticate_unchecked(
455 scrn->conn, ((xcb_screen_t *)(scrn->base.xcb_screen))->root, magic);
456 authenticate = xcb_dri2_authenticate_reply(scrn->conn, authenticate_cookie, NULL);
457
458 if (authenticate == NULL || !authenticate->authenticated)
459 goto free_authenticate;
460
461 if (pipe_loader_drm_probe_fd(&scrn->base.dev, fd))
462 scrn->base.pscreen = pipe_loader_create_screen(scrn->base.dev);
463
464 if (!scrn->base.pscreen)
465 goto release_pipe;
466
467 scrn->base.destroy = vl_dri2_screen_destroy;
468 scrn->base.texture_from_drawable = vl_dri2_screen_texture_from_drawable;
469 scrn->base.get_dirty_area = vl_dri2_screen_get_dirty_area;
470 scrn->base.get_timestamp = vl_dri2_screen_get_timestamp;
471 scrn->base.set_next_timestamp = vl_dri2_screen_set_next_timestamp;
472 scrn->base.get_private = vl_dri2_screen_get_private;
473 scrn->base.pscreen->flush_frontbuffer = vl_dri2_flush_frontbuffer;
474 vl_compositor_reset_dirty_area(&scrn->dirty_areas[0]);
475 vl_compositor_reset_dirty_area(&scrn->dirty_areas[1]);
476
477 /* The pipe loader duplicates the fd */
478 close(fd);
479 free(authenticate);
480 free(connect);
481 free(dri2_query);
482 free(error);
483
484 return &scrn->base;
485
486 release_pipe:
487 if (scrn->base.dev)
488 pipe_loader_release(&scrn->base.dev, 1);
489 free_authenticate:
490 free(authenticate);
491 close_fd:
492 close(fd);
493 free_connect:
494 free(connect);
495 free_query:
496 free(dri2_query);
497 free(error);
498
499 free_screen:
500 FREE(scrn);
501 return NULL;
502 }
503
504 static void
vl_dri2_screen_destroy(struct vl_screen * vscreen)505 vl_dri2_screen_destroy(struct vl_screen *vscreen)
506 {
507 struct vl_dri_screen *scrn = (struct vl_dri_screen *)vscreen;
508
509 assert(vscreen);
510
511 if (scrn->flushed) {
512 free(xcb_dri2_swap_buffers_reply(scrn->conn, scrn->swap_cookie, NULL));
513 free(xcb_dri2_wait_sbc_reply(scrn->conn, scrn->wait_cookie, NULL));
514 free(xcb_dri2_get_buffers_reply(scrn->conn, scrn->buffers_cookie, NULL));
515 }
516
517 vl_dri2_destroy_drawable(scrn);
518 scrn->base.pscreen->destroy(scrn->base.pscreen);
519 pipe_loader_release(&scrn->base.dev, 1);
520 /* There is no user provided fd */
521 FREE(scrn);
522 }
523