1 /*
2 * \file xf86drmMode.c
3 * Header for DRM modesetting interface.
4 *
5 * \author Jakob Bornecrantz <wallbraker@gmail.com>
6 *
7 * \par Acknowledgements:
8 * Feb 2007, Dave Airlie <airlied@linux.ie>
9 */
10
11 /*
12 * Copyright (c) 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
13 * Copyright (c) 2007-2008 Dave Airlie <airlied@linux.ie>
14 * Copyright (c) 2007-2008 Jakob Bornecrantz <wallbraker@gmail.com>
15 *
16 * Permission is hereby granted, free of charge, to any person obtaining a
17 * copy of this software and associated documentation files (the "Software"),
18 * to deal in the Software without restriction, including without limitation
19 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
20 * and/or sell copies of the Software, and to permit persons to whom the
21 * Software is furnished to do so, subject to the following conditions:
22 *
23 * The above copyright notice and this permission notice shall be included in
24 * all copies or substantial portions of the Software.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
27 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
28 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
29 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
30 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
31 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
32 * IN THE SOFTWARE.
33 *
34 */
35
36 /*
37 * TODO the types we are after are defined in different headers on different
38 * platforms find which headers to include to get uint32_t
39 */
40
41 #include <limits.h>
42 #include <stdint.h>
43 #include <stdlib.h>
44 #include <sys/ioctl.h>
45 #ifdef HAVE_SYS_SYSCTL_H
46 #include <sys/sysctl.h>
47 #endif
48 #include <stdio.h>
49 #include <stdbool.h>
50
51 #include "xf86drmMode.h"
52 #include "xf86drm.h"
53 #include <drm.h>
54 #include <string.h>
55 #include <dirent.h>
56 #include <unistd.h>
57 #include <errno.h>
58
59 #define memclear(s) memset(&s, 0, sizeof(s))
60
61 #define U642VOID(x) ((void *)(unsigned long)(x))
62 #define VOID2U64(x) ((uint64_t)(unsigned long)(x))
63
DRM_IOCTL(int fd,unsigned long cmd,void * arg)64 static inline int DRM_IOCTL(int fd, unsigned long cmd, void *arg)
65 {
66 int ret = drmIoctl(fd, cmd, arg);
67 return ret < 0 ? -errno : ret;
68 }
69
70 /*
71 * Util functions
72 */
73
drmAllocCpy(char * array,int count,int entry_size)74 static void* drmAllocCpy(char *array, int count, int entry_size)
75 {
76 char *r;
77 int i;
78
79 if (!count || !array || !entry_size)
80 return 0;
81
82 if (!(r = drmMalloc(count*entry_size)))
83 return 0;
84
85 for (i = 0; i < count; i++)
86 memcpy(r+(entry_size*i), array+(entry_size*i), entry_size);
87
88 return r;
89 }
90
91 /*
92 * A couple of free functions.
93 */
94
drmModeFreeModeInfo(drmModeModeInfoPtr ptr)95 void drmModeFreeModeInfo(drmModeModeInfoPtr ptr)
96 {
97 if (!ptr)
98 return;
99
100 drmFree(ptr);
101 }
102
drmModeFreeResources(drmModeResPtr ptr)103 void drmModeFreeResources(drmModeResPtr ptr)
104 {
105 if (!ptr)
106 return;
107
108 drmFree(ptr->fbs);
109 drmFree(ptr->crtcs);
110 drmFree(ptr->connectors);
111 drmFree(ptr->encoders);
112 drmFree(ptr);
113 }
114
drmModeFreeFB(drmModeFBPtr ptr)115 void drmModeFreeFB(drmModeFBPtr ptr)
116 {
117 if (!ptr)
118 return;
119
120 /* we might add more frees later. */
121 drmFree(ptr);
122 }
123
drmModeFreeCrtc(drmModeCrtcPtr ptr)124 void drmModeFreeCrtc(drmModeCrtcPtr ptr)
125 {
126 if (!ptr)
127 return;
128
129 drmFree(ptr);
130 }
131
drmModeFreeConnector(drmModeConnectorPtr ptr)132 void drmModeFreeConnector(drmModeConnectorPtr ptr)
133 {
134 if (!ptr)
135 return;
136
137 drmFree(ptr->encoders);
138 drmFree(ptr->prop_values);
139 drmFree(ptr->props);
140 drmFree(ptr->modes);
141 drmFree(ptr);
142 }
143
drmModeFreeEncoder(drmModeEncoderPtr ptr)144 void drmModeFreeEncoder(drmModeEncoderPtr ptr)
145 {
146 drmFree(ptr);
147 }
148
149 /*
150 * ModeSetting functions.
151 */
152
drmModeGetResources(int fd)153 drmModeResPtr drmModeGetResources(int fd)
154 {
155 struct drm_mode_card_res res, counts;
156 drmModeResPtr r = 0;
157
158 retry:
159 memclear(res);
160 if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
161 return 0;
162
163 counts = res;
164
165 if (res.count_fbs) {
166 res.fb_id_ptr = VOID2U64(drmMalloc(res.count_fbs*sizeof(uint32_t)));
167 if (!res.fb_id_ptr)
168 goto err_allocs;
169 }
170 if (res.count_crtcs) {
171 res.crtc_id_ptr = VOID2U64(drmMalloc(res.count_crtcs*sizeof(uint32_t)));
172 if (!res.crtc_id_ptr)
173 goto err_allocs;
174 }
175 if (res.count_connectors) {
176 res.connector_id_ptr = VOID2U64(drmMalloc(res.count_connectors*sizeof(uint32_t)));
177 if (!res.connector_id_ptr)
178 goto err_allocs;
179 }
180 if (res.count_encoders) {
181 res.encoder_id_ptr = VOID2U64(drmMalloc(res.count_encoders*sizeof(uint32_t)));
182 if (!res.encoder_id_ptr)
183 goto err_allocs;
184 }
185
186 if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
187 goto err_allocs;
188
189 /* The number of available connectors and etc may have changed with a
190 * hotplug event in between the ioctls, in which case the field is
191 * silently ignored by the kernel.
192 */
193 if (counts.count_fbs < res.count_fbs ||
194 counts.count_crtcs < res.count_crtcs ||
195 counts.count_connectors < res.count_connectors ||
196 counts.count_encoders < res.count_encoders)
197 {
198 drmFree(U642VOID(res.fb_id_ptr));
199 drmFree(U642VOID(res.crtc_id_ptr));
200 drmFree(U642VOID(res.connector_id_ptr));
201 drmFree(U642VOID(res.encoder_id_ptr));
202
203 goto retry;
204 }
205
206 /*
207 * return
208 */
209 if (!(r = drmMalloc(sizeof(*r))))
210 goto err_allocs;
211
212 r->min_width = res.min_width;
213 r->max_width = res.max_width;
214 r->min_height = res.min_height;
215 r->max_height = res.max_height;
216 r->count_fbs = res.count_fbs;
217 r->count_crtcs = res.count_crtcs;
218 r->count_connectors = res.count_connectors;
219 r->count_encoders = res.count_encoders;
220
221 r->fbs = drmAllocCpy(U642VOID(res.fb_id_ptr), res.count_fbs, sizeof(uint32_t));
222 r->crtcs = drmAllocCpy(U642VOID(res.crtc_id_ptr), res.count_crtcs, sizeof(uint32_t));
223 r->connectors = drmAllocCpy(U642VOID(res.connector_id_ptr), res.count_connectors, sizeof(uint32_t));
224 r->encoders = drmAllocCpy(U642VOID(res.encoder_id_ptr), res.count_encoders, sizeof(uint32_t));
225 if ((res.count_fbs && !r->fbs) ||
226 (res.count_crtcs && !r->crtcs) ||
227 (res.count_connectors && !r->connectors) ||
228 (res.count_encoders && !r->encoders))
229 {
230 drmFree(r->fbs);
231 drmFree(r->crtcs);
232 drmFree(r->connectors);
233 drmFree(r->encoders);
234 drmFree(r);
235 r = 0;
236 }
237
238 err_allocs:
239 drmFree(U642VOID(res.fb_id_ptr));
240 drmFree(U642VOID(res.crtc_id_ptr));
241 drmFree(U642VOID(res.connector_id_ptr));
242 drmFree(U642VOID(res.encoder_id_ptr));
243
244 return r;
245 }
246
drmModeAddFB(int fd,uint32_t width,uint32_t height,uint8_t depth,uint8_t bpp,uint32_t pitch,uint32_t bo_handle,uint32_t * buf_id)247 int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
248 uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
249 uint32_t *buf_id)
250 {
251 struct drm_mode_fb_cmd f;
252 int ret;
253
254 memclear(f);
255 f.width = width;
256 f.height = height;
257 f.pitch = pitch;
258 f.bpp = bpp;
259 f.depth = depth;
260 f.handle = bo_handle;
261
262 if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB, &f)))
263 return ret;
264
265 *buf_id = f.fb_id;
266 return 0;
267 }
268
drmModeAddFB2WithModifiers(int fd,uint32_t width,uint32_t height,uint32_t pixel_format,const uint32_t bo_handles[4],const uint32_t pitches[4],const uint32_t offsets[4],const uint64_t modifier[4],uint32_t * buf_id,uint32_t flags)269 int drmModeAddFB2WithModifiers(int fd, uint32_t width, uint32_t height,
270 uint32_t pixel_format, const uint32_t bo_handles[4],
271 const uint32_t pitches[4], const uint32_t offsets[4],
272 const uint64_t modifier[4], uint32_t *buf_id, uint32_t flags)
273 {
274 struct drm_mode_fb_cmd2 f;
275 int ret;
276
277 memclear(f);
278 f.width = width;
279 f.height = height;
280 f.pixel_format = pixel_format;
281 f.flags = flags;
282 memcpy(f.handles, bo_handles, 4 * sizeof(bo_handles[0]));
283 memcpy(f.pitches, pitches, 4 * sizeof(pitches[0]));
284 memcpy(f.offsets, offsets, 4 * sizeof(offsets[0]));
285 if (modifier)
286 memcpy(f.modifier, modifier, 4 * sizeof(modifier[0]));
287
288 if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB2, &f)))
289 return ret;
290
291 *buf_id = f.fb_id;
292 return 0;
293 }
294
drmModeAddFB2(int fd,uint32_t width,uint32_t height,uint32_t pixel_format,const uint32_t bo_handles[4],const uint32_t pitches[4],const uint32_t offsets[4],uint32_t * buf_id,uint32_t flags)295 int drmModeAddFB2(int fd, uint32_t width, uint32_t height,
296 uint32_t pixel_format, const uint32_t bo_handles[4],
297 const uint32_t pitches[4], const uint32_t offsets[4],
298 uint32_t *buf_id, uint32_t flags)
299 {
300 return drmModeAddFB2WithModifiers(fd, width, height,
301 pixel_format, bo_handles,
302 pitches, offsets, NULL,
303 buf_id, flags);
304 }
305
drmModeRmFB(int fd,uint32_t bufferId)306 int drmModeRmFB(int fd, uint32_t bufferId)
307 {
308 return DRM_IOCTL(fd, DRM_IOCTL_MODE_RMFB, &bufferId);
309 }
310
drmModeGetFB(int fd,uint32_t buf)311 drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
312 {
313 struct drm_mode_fb_cmd info;
314 drmModeFBPtr r;
315
316 memclear(info);
317 info.fb_id = buf;
318
319 if (drmIoctl(fd, DRM_IOCTL_MODE_GETFB, &info))
320 return NULL;
321
322 if (!(r = drmMalloc(sizeof(*r))))
323 return NULL;
324
325 r->fb_id = info.fb_id;
326 r->width = info.width;
327 r->height = info.height;
328 r->pitch = info.pitch;
329 r->bpp = info.bpp;
330 r->handle = info.handle;
331 r->depth = info.depth;
332
333 return r;
334 }
335
drmModeDirtyFB(int fd,uint32_t bufferId,drmModeClipPtr clips,uint32_t num_clips)336 int drmModeDirtyFB(int fd, uint32_t bufferId,
337 drmModeClipPtr clips, uint32_t num_clips)
338 {
339 struct drm_mode_fb_dirty_cmd dirty;
340
341 memclear(dirty);
342 dirty.fb_id = bufferId;
343 dirty.clips_ptr = VOID2U64(clips);
344 dirty.num_clips = num_clips;
345
346 return DRM_IOCTL(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty);
347 }
348
349 /*
350 * Crtc functions
351 */
352
drmModeGetCrtc(int fd,uint32_t crtcId)353 drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
354 {
355 struct drm_mode_crtc crtc;
356 drmModeCrtcPtr r;
357
358 memclear(crtc);
359 crtc.crtc_id = crtcId;
360
361 if (drmIoctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
362 return 0;
363
364 /*
365 * return
366 */
367
368 if (!(r = drmMalloc(sizeof(*r))))
369 return 0;
370
371 r->crtc_id = crtc.crtc_id;
372 r->x = crtc.x;
373 r->y = crtc.y;
374 r->mode_valid = crtc.mode_valid;
375 if (r->mode_valid) {
376 memcpy(&r->mode, &crtc.mode, sizeof(struct drm_mode_modeinfo));
377 r->width = crtc.mode.hdisplay;
378 r->height = crtc.mode.vdisplay;
379 }
380 r->buffer_id = crtc.fb_id;
381 r->gamma_size = crtc.gamma_size;
382 return r;
383 }
384
drmModeSetCrtc(int fd,uint32_t crtcId,uint32_t bufferId,uint32_t x,uint32_t y,uint32_t * connectors,int count,drmModeModeInfoPtr mode)385 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
386 uint32_t x, uint32_t y, uint32_t *connectors, int count,
387 drmModeModeInfoPtr mode)
388 {
389 struct drm_mode_crtc crtc;
390
391 memclear(crtc);
392 crtc.x = x;
393 crtc.y = y;
394 crtc.crtc_id = crtcId;
395 crtc.fb_id = bufferId;
396 crtc.set_connectors_ptr = VOID2U64(connectors);
397 crtc.count_connectors = count;
398 if (mode) {
399 memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
400 crtc.mode_valid = 1;
401 }
402
403 return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
404 }
405
406 /*
407 * Cursor manipulation
408 */
409
drmModeSetCursor(int fd,uint32_t crtcId,uint32_t bo_handle,uint32_t width,uint32_t height)410 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height)
411 {
412 struct drm_mode_cursor arg;
413
414 memclear(arg);
415 arg.flags = DRM_MODE_CURSOR_BO;
416 arg.crtc_id = crtcId;
417 arg.width = width;
418 arg.height = height;
419 arg.handle = bo_handle;
420
421 return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
422 }
423
drmModeSetCursor2(int fd,uint32_t crtcId,uint32_t bo_handle,uint32_t width,uint32_t height,int32_t hot_x,int32_t hot_y)424 int drmModeSetCursor2(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height, int32_t hot_x, int32_t hot_y)
425 {
426 struct drm_mode_cursor2 arg;
427
428 memclear(arg);
429 arg.flags = DRM_MODE_CURSOR_BO;
430 arg.crtc_id = crtcId;
431 arg.width = width;
432 arg.height = height;
433 arg.handle = bo_handle;
434 arg.hot_x = hot_x;
435 arg.hot_y = hot_y;
436
437 return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR2, &arg);
438 }
439
drmModeMoveCursor(int fd,uint32_t crtcId,int x,int y)440 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
441 {
442 struct drm_mode_cursor arg;
443
444 memclear(arg);
445 arg.flags = DRM_MODE_CURSOR_MOVE;
446 arg.crtc_id = crtcId;
447 arg.x = x;
448 arg.y = y;
449
450 return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
451 }
452
453 /*
454 * Encoder get
455 */
drmModeGetEncoder(int fd,uint32_t encoder_id)456 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
457 {
458 struct drm_mode_get_encoder enc;
459 drmModeEncoderPtr r = NULL;
460
461 memclear(enc);
462 enc.encoder_id = encoder_id;
463
464 if (drmIoctl(fd, DRM_IOCTL_MODE_GETENCODER, &enc))
465 return 0;
466
467 if (!(r = drmMalloc(sizeof(*r))))
468 return 0;
469
470 r->encoder_id = enc.encoder_id;
471 r->crtc_id = enc.crtc_id;
472 r->encoder_type = enc.encoder_type;
473 r->possible_crtcs = enc.possible_crtcs;
474 r->possible_clones = enc.possible_clones;
475
476 return r;
477 }
478
479 /*
480 * Connector manipulation
481 */
482 static drmModeConnectorPtr
_drmModeGetConnector(int fd,uint32_t connector_id,int probe)483 _drmModeGetConnector(int fd, uint32_t connector_id, int probe)
484 {
485 struct drm_mode_get_connector conn, counts;
486 drmModeConnectorPtr r = NULL;
487 struct drm_mode_modeinfo stack_mode;
488
489 memclear(conn);
490 conn.connector_id = connector_id;
491 if (!probe) {
492 conn.count_modes = 1;
493 conn.modes_ptr = VOID2U64(&stack_mode);
494 }
495
496 if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
497 return 0;
498
499 retry:
500 counts = conn;
501
502 if (conn.count_props) {
503 conn.props_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint32_t)));
504 if (!conn.props_ptr)
505 goto err_allocs;
506 conn.prop_values_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint64_t)));
507 if (!conn.prop_values_ptr)
508 goto err_allocs;
509 }
510
511 if (conn.count_modes) {
512 conn.modes_ptr = VOID2U64(drmMalloc(conn.count_modes*sizeof(struct drm_mode_modeinfo)));
513 if (!conn.modes_ptr)
514 goto err_allocs;
515 } else {
516 conn.count_modes = 1;
517 conn.modes_ptr = VOID2U64(&stack_mode);
518 }
519
520 if (conn.count_encoders) {
521 conn.encoders_ptr = VOID2U64(drmMalloc(conn.count_encoders*sizeof(uint32_t)));
522 if (!conn.encoders_ptr)
523 goto err_allocs;
524 }
525
526 if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
527 goto err_allocs;
528
529 /* The number of available connectors and etc may have changed with a
530 * hotplug event in between the ioctls, in which case the field is
531 * silently ignored by the kernel.
532 */
533 if (counts.count_props < conn.count_props ||
534 counts.count_modes < conn.count_modes ||
535 counts.count_encoders < conn.count_encoders) {
536 drmFree(U642VOID(conn.props_ptr));
537 drmFree(U642VOID(conn.prop_values_ptr));
538 if (U642VOID(conn.modes_ptr) != &stack_mode)
539 drmFree(U642VOID(conn.modes_ptr));
540 drmFree(U642VOID(conn.encoders_ptr));
541
542 goto retry;
543 }
544
545 if(!(r = drmMalloc(sizeof(*r)))) {
546 goto err_allocs;
547 }
548
549 r->connector_id = conn.connector_id;
550 r->encoder_id = conn.encoder_id;
551 r->connection = conn.connection;
552 r->mmWidth = conn.mm_width;
553 r->mmHeight = conn.mm_height;
554 /* convert subpixel from kernel to userspace */
555 r->subpixel = conn.subpixel + 1;
556 r->count_modes = conn.count_modes;
557 r->count_props = conn.count_props;
558 r->props = drmAllocCpy(U642VOID(conn.props_ptr), conn.count_props, sizeof(uint32_t));
559 r->prop_values = drmAllocCpy(U642VOID(conn.prop_values_ptr), conn.count_props, sizeof(uint64_t));
560 r->modes = drmAllocCpy(U642VOID(conn.modes_ptr), conn.count_modes, sizeof(struct drm_mode_modeinfo));
561 r->count_encoders = conn.count_encoders;
562 r->encoders = drmAllocCpy(U642VOID(conn.encoders_ptr), conn.count_encoders, sizeof(uint32_t));
563 r->connector_type = conn.connector_type;
564 r->connector_type_id = conn.connector_type_id;
565
566 if ((r->count_props && !r->props) ||
567 (r->count_props && !r->prop_values) ||
568 (r->count_modes && !r->modes) ||
569 (r->count_encoders && !r->encoders)) {
570 drmFree(r->props);
571 drmFree(r->prop_values);
572 drmFree(r->modes);
573 drmFree(r->encoders);
574 drmFree(r);
575 r = 0;
576 }
577
578 err_allocs:
579 drmFree(U642VOID(conn.prop_values_ptr));
580 drmFree(U642VOID(conn.props_ptr));
581 if (U642VOID(conn.modes_ptr) != &stack_mode)
582 drmFree(U642VOID(conn.modes_ptr));
583 drmFree(U642VOID(conn.encoders_ptr));
584
585 return r;
586 }
587
drmModeGetConnector(int fd,uint32_t connector_id)588 drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connector_id)
589 {
590 return _drmModeGetConnector(fd, connector_id, 1);
591 }
592
drmModeGetConnectorCurrent(int fd,uint32_t connector_id)593 drmModeConnectorPtr drmModeGetConnectorCurrent(int fd, uint32_t connector_id)
594 {
595 return _drmModeGetConnector(fd, connector_id, 0);
596 }
597
drmModeAttachMode(int fd,uint32_t connector_id,drmModeModeInfoPtr mode_info)598 int drmModeAttachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
599 {
600 struct drm_mode_mode_cmd res;
601
602 memclear(res);
603 memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
604 res.connector_id = connector_id;
605
606 return DRM_IOCTL(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
607 }
608
drmModeDetachMode(int fd,uint32_t connector_id,drmModeModeInfoPtr mode_info)609 int drmModeDetachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
610 {
611 struct drm_mode_mode_cmd res;
612
613 memclear(res);
614 memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
615 res.connector_id = connector_id;
616
617 return DRM_IOCTL(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
618 }
619
drmModeGetProperty(int fd,uint32_t property_id)620 drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
621 {
622 struct drm_mode_get_property prop;
623 drmModePropertyPtr r;
624
625 memclear(prop);
626 prop.prop_id = property_id;
627
628 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
629 return 0;
630
631 if (prop.count_values)
632 prop.values_ptr = VOID2U64(drmMalloc(prop.count_values * sizeof(uint64_t)));
633
634 if (prop.count_enum_blobs && (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
635 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(struct drm_mode_property_enum)));
636
637 if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_BLOB)) {
638 prop.values_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
639 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
640 }
641
642 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
643 r = NULL;
644 goto err_allocs;
645 }
646
647 if (!(r = drmMalloc(sizeof(*r))))
648 return NULL;
649
650 r->prop_id = prop.prop_id;
651 r->count_values = prop.count_values;
652
653 r->flags = prop.flags;
654 if (prop.count_values)
655 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_values, sizeof(uint64_t));
656 if (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
657 r->count_enums = prop.count_enum_blobs;
658 r->enums = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(struct drm_mode_property_enum));
659 } else if (prop.flags & DRM_MODE_PROP_BLOB) {
660 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_enum_blobs, sizeof(uint32_t));
661 r->blob_ids = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(uint32_t));
662 r->count_blobs = prop.count_enum_blobs;
663 }
664 strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
665 r->name[DRM_PROP_NAME_LEN-1] = 0;
666
667 err_allocs:
668 drmFree(U642VOID(prop.values_ptr));
669 drmFree(U642VOID(prop.enum_blob_ptr));
670
671 return r;
672 }
673
drmModeFreeProperty(drmModePropertyPtr ptr)674 void drmModeFreeProperty(drmModePropertyPtr ptr)
675 {
676 if (!ptr)
677 return;
678
679 drmFree(ptr->values);
680 drmFree(ptr->enums);
681 drmFree(ptr);
682 }
683
drmModeGetPropertyBlob(int fd,uint32_t blob_id)684 drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id)
685 {
686 struct drm_mode_get_blob blob;
687 drmModePropertyBlobPtr r;
688
689 memclear(blob);
690 blob.blob_id = blob_id;
691
692 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob))
693 return NULL;
694
695 if (blob.length)
696 blob.data = VOID2U64(drmMalloc(blob.length));
697
698 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob)) {
699 r = NULL;
700 goto err_allocs;
701 }
702
703 if (!(r = drmMalloc(sizeof(*r))))
704 goto err_allocs;
705
706 r->id = blob.blob_id;
707 r->length = blob.length;
708 r->data = drmAllocCpy(U642VOID(blob.data), 1, blob.length);
709
710 err_allocs:
711 drmFree(U642VOID(blob.data));
712 return r;
713 }
714
drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)715 void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
716 {
717 if (!ptr)
718 return;
719
720 drmFree(ptr->data);
721 drmFree(ptr);
722 }
723
drmModeConnectorSetProperty(int fd,uint32_t connector_id,uint32_t property_id,uint64_t value)724 int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
725 uint64_t value)
726 {
727 struct drm_mode_connector_set_property osp;
728
729 memclear(osp);
730 osp.connector_id = connector_id;
731 osp.prop_id = property_id;
732 osp.value = value;
733
734 return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPROPERTY, &osp);
735 }
736
737 /*
738 * checks if a modesetting capable driver has attached to the pci id
739 * returns 0 if modesetting supported.
740 * -EINVAL or invalid bus id
741 * -ENOSYS if no modesetting support
742 */
drmCheckModesettingSupported(const char * busid)743 int drmCheckModesettingSupported(const char *busid)
744 {
745 #if defined (__linux__)
746 char pci_dev_dir[1024];
747 int domain, bus, dev, func;
748 DIR *sysdir;
749 struct dirent *dent;
750 int found = 0, ret;
751
752 ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev, &func);
753 if (ret != 4)
754 return -EINVAL;
755
756 sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
757 domain, bus, dev, func);
758
759 sysdir = opendir(pci_dev_dir);
760 if (sysdir) {
761 dent = readdir(sysdir);
762 while (dent) {
763 if (!strncmp(dent->d_name, "controlD", 8)) {
764 found = 1;
765 break;
766 }
767
768 dent = readdir(sysdir);
769 }
770 closedir(sysdir);
771 if (found)
772 return 0;
773 }
774
775 sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
776 domain, bus, dev, func);
777
778 sysdir = opendir(pci_dev_dir);
779 if (!sysdir)
780 return -EINVAL;
781
782 dent = readdir(sysdir);
783 while (dent) {
784 if (!strncmp(dent->d_name, "drm:controlD", 12)) {
785 found = 1;
786 break;
787 }
788
789 dent = readdir(sysdir);
790 }
791
792 closedir(sysdir);
793 if (found)
794 return 0;
795 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
796 char kbusid[1024], sbusid[1024];
797 char oid[128];
798 int domain, bus, dev, func;
799 int i, modesetting, ret;
800 size_t len;
801
802 ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev,
803 &func);
804 if (ret != 4)
805 return -EINVAL;
806 snprintf(kbusid, sizeof(kbusid), "pci:%04x:%02x:%02x.%d", domain, bus,
807 dev, func);
808
809 /* How many GPUs do we expect in the machine ? */
810 for (i = 0; i < 16; i++) {
811 snprintf(oid, sizeof(oid), "hw.dri.%d.busid", i);
812 len = sizeof(sbusid);
813 ret = sysctlbyname(oid, sbusid, &len, NULL, 0);
814 if (ret == -1) {
815 if (errno == ENOENT)
816 continue;
817 return -EINVAL;
818 }
819 if (strcmp(sbusid, kbusid) != 0)
820 continue;
821 snprintf(oid, sizeof(oid), "hw.dri.%d.modesetting", i);
822 len = sizeof(modesetting);
823 ret = sysctlbyname(oid, &modesetting, &len, NULL, 0);
824 if (ret == -1 || len != sizeof(modesetting))
825 return -EINVAL;
826 return (modesetting ? 0 : -ENOSYS);
827 }
828 #elif defined(__DragonFly__)
829 return 0;
830 #elif defined(__OpenBSD__)
831 int fd;
832 struct drm_mode_card_res res;
833 drmModeResPtr r = 0;
834
835 if ((fd = drmOpen(NULL, busid)) < 0)
836 return -EINVAL;
837
838 memset(&res, 0, sizeof(struct drm_mode_card_res));
839
840 if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res)) {
841 drmClose(fd);
842 return -errno;
843 }
844
845 drmClose(fd);
846 return 0;
847 #endif
848 return -ENOSYS;
849 }
850
drmModeCrtcGetGamma(int fd,uint32_t crtc_id,uint32_t size,uint16_t * red,uint16_t * green,uint16_t * blue)851 int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
852 uint16_t *red, uint16_t *green, uint16_t *blue)
853 {
854 struct drm_mode_crtc_lut l;
855
856 memclear(l);
857 l.crtc_id = crtc_id;
858 l.gamma_size = size;
859 l.red = VOID2U64(red);
860 l.green = VOID2U64(green);
861 l.blue = VOID2U64(blue);
862
863 return DRM_IOCTL(fd, DRM_IOCTL_MODE_GETGAMMA, &l);
864 }
865
drmModeCrtcSetGamma(int fd,uint32_t crtc_id,uint32_t size,uint16_t * red,uint16_t * green,uint16_t * blue)866 int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
867 uint16_t *red, uint16_t *green, uint16_t *blue)
868 {
869 struct drm_mode_crtc_lut l;
870
871 memclear(l);
872 l.crtc_id = crtc_id;
873 l.gamma_size = size;
874 l.red = VOID2U64(red);
875 l.green = VOID2U64(green);
876 l.blue = VOID2U64(blue);
877
878 return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETGAMMA, &l);
879 }
880
drmHandleEvent(int fd,drmEventContextPtr evctx)881 int drmHandleEvent(int fd, drmEventContextPtr evctx)
882 {
883 char buffer[1024];
884 int len, i;
885 struct drm_event *e;
886 struct drm_event_vblank *vblank;
887 struct drm_event_crtc_sequence *seq;
888 void *user_data;
889
890 /* The DRM read semantics guarantees that we always get only
891 * complete events. */
892
893 len = read(fd, buffer, sizeof buffer);
894 if (len == 0)
895 return 0;
896 if (len < (int)sizeof *e)
897 return -1;
898
899 i = 0;
900 while (i < len) {
901 e = (struct drm_event *)(buffer + i);
902 switch (e->type) {
903 case DRM_EVENT_VBLANK:
904 if (evctx->version < 1 ||
905 evctx->vblank_handler == NULL)
906 break;
907 vblank = (struct drm_event_vblank *) e;
908 evctx->vblank_handler(fd,
909 vblank->sequence,
910 vblank->tv_sec,
911 vblank->tv_usec,
912 U642VOID (vblank->user_data));
913 break;
914 case DRM_EVENT_FLIP_COMPLETE:
915 vblank = (struct drm_event_vblank *) e;
916 user_data = U642VOID (vblank->user_data);
917
918 if (evctx->version >= 3 && evctx->page_flip_handler2)
919 evctx->page_flip_handler2(fd,
920 vblank->sequence,
921 vblank->tv_sec,
922 vblank->tv_usec,
923 vblank->crtc_id,
924 user_data);
925 else if (evctx->version >= 2 && evctx->page_flip_handler)
926 evctx->page_flip_handler(fd,
927 vblank->sequence,
928 vblank->tv_sec,
929 vblank->tv_usec,
930 user_data);
931 break;
932 case DRM_EVENT_CRTC_SEQUENCE:
933 seq = (struct drm_event_crtc_sequence *) e;
934 if (evctx->version >= 4 && evctx->sequence_handler)
935 evctx->sequence_handler(fd,
936 seq->sequence,
937 seq->time_ns,
938 seq->user_data);
939 break;
940 default:
941 break;
942 }
943 i += e->length;
944 }
945
946 return 0;
947 }
948
drmModePageFlip(int fd,uint32_t crtc_id,uint32_t fb_id,uint32_t flags,void * user_data)949 int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
950 uint32_t flags, void *user_data)
951 {
952 struct drm_mode_crtc_page_flip flip;
953
954 memclear(flip);
955 flip.fb_id = fb_id;
956 flip.crtc_id = crtc_id;
957 flip.user_data = VOID2U64(user_data);
958 flip.flags = flags;
959
960 return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);
961 }
962
drmModePageFlipTarget(int fd,uint32_t crtc_id,uint32_t fb_id,uint32_t flags,void * user_data,uint32_t target_vblank)963 int drmModePageFlipTarget(int fd, uint32_t crtc_id, uint32_t fb_id,
964 uint32_t flags, void *user_data,
965 uint32_t target_vblank)
966 {
967 struct drm_mode_crtc_page_flip_target flip_target;
968
969 memclear(flip_target);
970 flip_target.fb_id = fb_id;
971 flip_target.crtc_id = crtc_id;
972 flip_target.user_data = VOID2U64(user_data);
973 flip_target.flags = flags;
974 flip_target.sequence = target_vblank;
975
976 return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip_target);
977 }
978
drmModeSetPlane(int fd,uint32_t plane_id,uint32_t crtc_id,uint32_t fb_id,uint32_t flags,int32_t crtc_x,int32_t crtc_y,uint32_t crtc_w,uint32_t crtc_h,uint32_t src_x,uint32_t src_y,uint32_t src_w,uint32_t src_h)979 int drmModeSetPlane(int fd, uint32_t plane_id, uint32_t crtc_id,
980 uint32_t fb_id, uint32_t flags,
981 int32_t crtc_x, int32_t crtc_y,
982 uint32_t crtc_w, uint32_t crtc_h,
983 uint32_t src_x, uint32_t src_y,
984 uint32_t src_w, uint32_t src_h)
985 {
986 struct drm_mode_set_plane s;
987
988 memclear(s);
989 s.plane_id = plane_id;
990 s.crtc_id = crtc_id;
991 s.fb_id = fb_id;
992 s.flags = flags;
993 s.crtc_x = crtc_x;
994 s.crtc_y = crtc_y;
995 s.crtc_w = crtc_w;
996 s.crtc_h = crtc_h;
997 s.src_x = src_x;
998 s.src_y = src_y;
999 s.src_w = src_w;
1000 s.src_h = src_h;
1001
1002 return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPLANE, &s);
1003 }
1004
drmModeGetPlane(int fd,uint32_t plane_id)1005 drmModePlanePtr drmModeGetPlane(int fd, uint32_t plane_id)
1006 {
1007 struct drm_mode_get_plane ovr, counts;
1008 drmModePlanePtr r = 0;
1009
1010 retry:
1011 memclear(ovr);
1012 ovr.plane_id = plane_id;
1013 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
1014 return 0;
1015
1016 counts = ovr;
1017
1018 if (ovr.count_format_types) {
1019 ovr.format_type_ptr = VOID2U64(drmMalloc(ovr.count_format_types *
1020 sizeof(uint32_t)));
1021 if (!ovr.format_type_ptr)
1022 goto err_allocs;
1023 }
1024
1025 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
1026 goto err_allocs;
1027
1028 if (counts.count_format_types < ovr.count_format_types) {
1029 drmFree(U642VOID(ovr.format_type_ptr));
1030 goto retry;
1031 }
1032
1033 if (!(r = drmMalloc(sizeof(*r))))
1034 goto err_allocs;
1035
1036 r->count_formats = ovr.count_format_types;
1037 r->plane_id = ovr.plane_id;
1038 r->crtc_id = ovr.crtc_id;
1039 r->fb_id = ovr.fb_id;
1040 r->possible_crtcs = ovr.possible_crtcs;
1041 r->gamma_size = ovr.gamma_size;
1042 r->formats = drmAllocCpy(U642VOID(ovr.format_type_ptr),
1043 ovr.count_format_types, sizeof(uint32_t));
1044 if (ovr.count_format_types && !r->formats) {
1045 drmFree(r->formats);
1046 drmFree(r);
1047 r = 0;
1048 }
1049
1050 err_allocs:
1051 drmFree(U642VOID(ovr.format_type_ptr));
1052
1053 return r;
1054 }
1055
drmModeFreePlane(drmModePlanePtr ptr)1056 void drmModeFreePlane(drmModePlanePtr ptr)
1057 {
1058 if (!ptr)
1059 return;
1060
1061 drmFree(ptr->formats);
1062 drmFree(ptr);
1063 }
1064
drmModeGetPlaneResources(int fd)1065 drmModePlaneResPtr drmModeGetPlaneResources(int fd)
1066 {
1067 struct drm_mode_get_plane_res res, counts;
1068 drmModePlaneResPtr r = 0;
1069
1070 retry:
1071 memclear(res);
1072 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1073 return 0;
1074
1075 counts = res;
1076
1077 if (res.count_planes) {
1078 res.plane_id_ptr = VOID2U64(drmMalloc(res.count_planes *
1079 sizeof(uint32_t)));
1080 if (!res.plane_id_ptr)
1081 goto err_allocs;
1082 }
1083
1084 if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1085 goto err_allocs;
1086
1087 if (counts.count_planes < res.count_planes) {
1088 drmFree(U642VOID(res.plane_id_ptr));
1089 goto retry;
1090 }
1091
1092 if (!(r = drmMalloc(sizeof(*r))))
1093 goto err_allocs;
1094
1095 r->count_planes = res.count_planes;
1096 r->planes = drmAllocCpy(U642VOID(res.plane_id_ptr),
1097 res.count_planes, sizeof(uint32_t));
1098 if (res.count_planes && !r->planes) {
1099 drmFree(r->planes);
1100 drmFree(r);
1101 r = 0;
1102 }
1103
1104 err_allocs:
1105 drmFree(U642VOID(res.plane_id_ptr));
1106
1107 return r;
1108 }
1109
drmModeFreePlaneResources(drmModePlaneResPtr ptr)1110 void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
1111 {
1112 if (!ptr)
1113 return;
1114
1115 drmFree(ptr->planes);
1116 drmFree(ptr);
1117 }
1118
drmModeObjectGetProperties(int fd,uint32_t object_id,uint32_t object_type)1119 drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd,
1120 uint32_t object_id,
1121 uint32_t object_type)
1122 {
1123 struct drm_mode_obj_get_properties properties;
1124 drmModeObjectPropertiesPtr ret = NULL;
1125 uint32_t count;
1126
1127 retry:
1128 memclear(properties);
1129 properties.obj_id = object_id;
1130 properties.obj_type = object_type;
1131
1132 if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1133 return 0;
1134
1135 count = properties.count_props;
1136
1137 if (count) {
1138 properties.props_ptr = VOID2U64(drmMalloc(count *
1139 sizeof(uint32_t)));
1140 if (!properties.props_ptr)
1141 goto err_allocs;
1142 properties.prop_values_ptr = VOID2U64(drmMalloc(count *
1143 sizeof(uint64_t)));
1144 if (!properties.prop_values_ptr)
1145 goto err_allocs;
1146 }
1147
1148 if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1149 goto err_allocs;
1150
1151 if (count < properties.count_props) {
1152 drmFree(U642VOID(properties.props_ptr));
1153 drmFree(U642VOID(properties.prop_values_ptr));
1154 goto retry;
1155 }
1156 count = properties.count_props;
1157
1158 ret = drmMalloc(sizeof(*ret));
1159 if (!ret)
1160 goto err_allocs;
1161
1162 ret->count_props = count;
1163 ret->props = drmAllocCpy(U642VOID(properties.props_ptr),
1164 count, sizeof(uint32_t));
1165 ret->prop_values = drmAllocCpy(U642VOID(properties.prop_values_ptr),
1166 count, sizeof(uint64_t));
1167 if (ret->count_props && (!ret->props || !ret->prop_values)) {
1168 drmFree(ret->props);
1169 drmFree(ret->prop_values);
1170 drmFree(ret);
1171 ret = NULL;
1172 }
1173
1174 err_allocs:
1175 drmFree(U642VOID(properties.props_ptr));
1176 drmFree(U642VOID(properties.prop_values_ptr));
1177 return ret;
1178 }
1179
drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)1180 void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)
1181 {
1182 if (!ptr)
1183 return;
1184 drmFree(ptr->props);
1185 drmFree(ptr->prop_values);
1186 drmFree(ptr);
1187 }
1188
drmModeObjectSetProperty(int fd,uint32_t object_id,uint32_t object_type,uint32_t property_id,uint64_t value)1189 int drmModeObjectSetProperty(int fd, uint32_t object_id, uint32_t object_type,
1190 uint32_t property_id, uint64_t value)
1191 {
1192 struct drm_mode_obj_set_property prop;
1193
1194 memclear(prop);
1195 prop.value = value;
1196 prop.prop_id = property_id;
1197 prop.obj_id = object_id;
1198 prop.obj_type = object_type;
1199
1200 return DRM_IOCTL(fd, DRM_IOCTL_MODE_OBJ_SETPROPERTY, &prop);
1201 }
1202
1203 typedef struct _drmModeAtomicReqItem drmModeAtomicReqItem, *drmModeAtomicReqItemPtr;
1204
1205 struct _drmModeAtomicReqItem {
1206 uint32_t object_id;
1207 uint32_t property_id;
1208 uint64_t value;
1209 };
1210
1211 struct _drmModeAtomicReq {
1212 uint32_t cursor;
1213 uint32_t size_items;
1214 drmModeAtomicReqItemPtr items;
1215 };
1216
drmModeAtomicAlloc(void)1217 drmModeAtomicReqPtr drmModeAtomicAlloc(void)
1218 {
1219 drmModeAtomicReqPtr req;
1220
1221 req = drmMalloc(sizeof *req);
1222 if (!req)
1223 return NULL;
1224
1225 req->items = NULL;
1226 req->cursor = 0;
1227 req->size_items = 0;
1228
1229 return req;
1230 }
1231
drmModeAtomicDuplicate(drmModeAtomicReqPtr old)1232 drmModeAtomicReqPtr drmModeAtomicDuplicate(drmModeAtomicReqPtr old)
1233 {
1234 drmModeAtomicReqPtr new;
1235
1236 if (!old)
1237 return NULL;
1238
1239 new = drmMalloc(sizeof *new);
1240 if (!new)
1241 return NULL;
1242
1243 new->cursor = old->cursor;
1244 new->size_items = old->size_items;
1245
1246 if (old->size_items) {
1247 new->items = drmMalloc(old->size_items * sizeof(*new->items));
1248 if (!new->items) {
1249 free(new);
1250 return NULL;
1251 }
1252 memcpy(new->items, old->items,
1253 old->cursor * sizeof(*new->items));
1254 } else {
1255 new->items = NULL;
1256 }
1257
1258 return new;
1259 }
1260
drmModeAtomicMerge(drmModeAtomicReqPtr base,drmModeAtomicReqPtr augment)1261 int drmModeAtomicMerge(drmModeAtomicReqPtr base, drmModeAtomicReqPtr augment)
1262 {
1263 if (!base)
1264 return -EINVAL;
1265
1266 if (!augment || augment->cursor == 0)
1267 return 0;
1268
1269 if (base->cursor + augment->cursor >= base->size_items) {
1270 drmModeAtomicReqItemPtr new;
1271 int saved_size = base->size_items;
1272
1273 base->size_items = base->cursor + augment->cursor;
1274 new = realloc(base->items,
1275 base->size_items * sizeof(*base->items));
1276 if (!new) {
1277 base->size_items = saved_size;
1278 return -ENOMEM;
1279 }
1280 base->items = new;
1281 }
1282
1283 memcpy(&base->items[base->cursor], augment->items,
1284 augment->cursor * sizeof(*augment->items));
1285 base->cursor += augment->cursor;
1286
1287 return 0;
1288 }
1289
drmModeAtomicGetCursor(drmModeAtomicReqPtr req)1290 int drmModeAtomicGetCursor(drmModeAtomicReqPtr req)
1291 {
1292 if (!req)
1293 return -EINVAL;
1294 return req->cursor;
1295 }
1296
drmModeAtomicSetCursor(drmModeAtomicReqPtr req,int cursor)1297 void drmModeAtomicSetCursor(drmModeAtomicReqPtr req, int cursor)
1298 {
1299 if (req)
1300 req->cursor = cursor;
1301 }
1302
drmModeAtomicAddProperty(drmModeAtomicReqPtr req,uint32_t object_id,uint32_t property_id,uint64_t value)1303 int drmModeAtomicAddProperty(drmModeAtomicReqPtr req,
1304 uint32_t object_id,
1305 uint32_t property_id,
1306 uint64_t value)
1307 {
1308 if (!req)
1309 return -EINVAL;
1310
1311 if (object_id == 0 || property_id == 0)
1312 return -EINVAL;
1313
1314 if (req->cursor >= req->size_items) {
1315 const uint32_t item_size_inc = getpagesize() / sizeof(*req->items);
1316 drmModeAtomicReqItemPtr new;
1317
1318 req->size_items += item_size_inc;
1319 new = realloc(req->items, req->size_items * sizeof(*req->items));
1320 if (!new) {
1321 req->size_items -= item_size_inc;
1322 return -ENOMEM;
1323 }
1324 req->items = new;
1325 }
1326
1327 req->items[req->cursor].object_id = object_id;
1328 req->items[req->cursor].property_id = property_id;
1329 req->items[req->cursor].value = value;
1330 req->cursor++;
1331
1332 return req->cursor;
1333 }
1334
drmModeAtomicFree(drmModeAtomicReqPtr req)1335 void drmModeAtomicFree(drmModeAtomicReqPtr req)
1336 {
1337 if (!req)
1338 return;
1339
1340 if (req->items)
1341 drmFree(req->items);
1342 drmFree(req);
1343 }
1344
sort_req_list(const void * misc,const void * other)1345 static int sort_req_list(const void *misc, const void *other)
1346 {
1347 const drmModeAtomicReqItem *first = misc;
1348 const drmModeAtomicReqItem *second = other;
1349
1350 if (first->object_id < second->object_id)
1351 return -1;
1352 else if (first->object_id > second->object_id)
1353 return 1;
1354 else
1355 return second->property_id - first->property_id;
1356 }
1357
drmModeAtomicCommit(int fd,drmModeAtomicReqPtr req,uint32_t flags,void * user_data)1358 int drmModeAtomicCommit(int fd, drmModeAtomicReqPtr req, uint32_t flags,
1359 void *user_data)
1360 {
1361 drmModeAtomicReqPtr sorted;
1362 struct drm_mode_atomic atomic;
1363 uint32_t *objs_ptr = NULL;
1364 uint32_t *count_props_ptr = NULL;
1365 uint32_t *props_ptr = NULL;
1366 uint64_t *prop_values_ptr = NULL;
1367 uint32_t last_obj_id = 0;
1368 uint32_t i;
1369 int obj_idx = -1;
1370 int ret = -1;
1371
1372 if (!req)
1373 return -EINVAL;
1374
1375 if (req->cursor == 0)
1376 return 0;
1377
1378 sorted = drmModeAtomicDuplicate(req);
1379 if (sorted == NULL)
1380 return -ENOMEM;
1381
1382 memclear(atomic);
1383
1384 /* Sort the list by object ID, then by property ID. */
1385 qsort(sorted->items, sorted->cursor, sizeof(*sorted->items),
1386 sort_req_list);
1387
1388 /* Now the list is sorted, eliminate duplicate property sets. */
1389 for (i = 0; i < sorted->cursor; i++) {
1390 if (sorted->items[i].object_id != last_obj_id) {
1391 atomic.count_objs++;
1392 last_obj_id = sorted->items[i].object_id;
1393 }
1394
1395 if (i == sorted->cursor - 1)
1396 continue;
1397
1398 if (sorted->items[i].object_id != sorted->items[i + 1].object_id ||
1399 sorted->items[i].property_id != sorted->items[i + 1].property_id)
1400 continue;
1401
1402 memmove(&sorted->items[i], &sorted->items[i + 1],
1403 (sorted->cursor - i - 1) * sizeof(*sorted->items));
1404 sorted->cursor--;
1405 }
1406
1407 objs_ptr = drmMalloc(atomic.count_objs * sizeof objs_ptr[0]);
1408 if (!objs_ptr) {
1409 errno = ENOMEM;
1410 goto out;
1411 }
1412
1413 count_props_ptr = drmMalloc(atomic.count_objs * sizeof count_props_ptr[0]);
1414 if (!count_props_ptr) {
1415 errno = ENOMEM;
1416 goto out;
1417 }
1418
1419 props_ptr = drmMalloc(sorted->cursor * sizeof props_ptr[0]);
1420 if (!props_ptr) {
1421 errno = ENOMEM;
1422 goto out;
1423 }
1424
1425 prop_values_ptr = drmMalloc(sorted->cursor * sizeof prop_values_ptr[0]);
1426 if (!prop_values_ptr) {
1427 errno = ENOMEM;
1428 goto out;
1429 }
1430
1431 for (i = 0, last_obj_id = 0; i < sorted->cursor; i++) {
1432 if (sorted->items[i].object_id != last_obj_id) {
1433 obj_idx++;
1434 objs_ptr[obj_idx] = sorted->items[i].object_id;
1435 last_obj_id = objs_ptr[obj_idx];
1436 }
1437
1438 count_props_ptr[obj_idx]++;
1439 props_ptr[i] = sorted->items[i].property_id;
1440 prop_values_ptr[i] = sorted->items[i].value;
1441
1442 }
1443
1444 atomic.flags = flags;
1445 atomic.objs_ptr = VOID2U64(objs_ptr);
1446 atomic.count_props_ptr = VOID2U64(count_props_ptr);
1447 atomic.props_ptr = VOID2U64(props_ptr);
1448 atomic.prop_values_ptr = VOID2U64(prop_values_ptr);
1449 atomic.user_data = VOID2U64(user_data);
1450
1451 ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ATOMIC, &atomic);
1452
1453 out:
1454 drmFree(objs_ptr);
1455 drmFree(count_props_ptr);
1456 drmFree(props_ptr);
1457 drmFree(prop_values_ptr);
1458 drmModeAtomicFree(sorted);
1459
1460 return ret;
1461 }
1462
1463 int
drmModeCreatePropertyBlob(int fd,const void * data,size_t length,uint32_t * id)1464 drmModeCreatePropertyBlob(int fd, const void *data, size_t length, uint32_t *id)
1465 {
1466 struct drm_mode_create_blob create;
1467 int ret;
1468
1469 if (length >= 0xffffffff)
1470 return -ERANGE;
1471
1472 memclear(create);
1473
1474 create.length = length;
1475 create.data = (uintptr_t) data;
1476 create.blob_id = 0;
1477 *id = 0;
1478
1479 ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATEPROPBLOB, &create);
1480 if (ret != 0)
1481 return ret;
1482
1483 *id = create.blob_id;
1484 return 0;
1485 }
1486
1487 int
drmModeDestroyPropertyBlob(int fd,uint32_t id)1488 drmModeDestroyPropertyBlob(int fd, uint32_t id)
1489 {
1490 struct drm_mode_destroy_blob destroy;
1491
1492 memclear(destroy);
1493 destroy.blob_id = id;
1494 return DRM_IOCTL(fd, DRM_IOCTL_MODE_DESTROYPROPBLOB, &destroy);
1495 }
1496
1497 int
drmModeCreateLease(int fd,const uint32_t * objects,int num_objects,int flags,uint32_t * lessee_id)1498 drmModeCreateLease(int fd, const uint32_t *objects, int num_objects, int flags, uint32_t *lessee_id)
1499 {
1500 struct drm_mode_create_lease create;
1501 int ret;
1502
1503 memclear(create);
1504 create.object_ids = (uintptr_t) objects;
1505 create.object_count = num_objects;
1506 create.flags = flags;
1507
1508 ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_CREATE_LEASE, &create);
1509 if (ret == 0) {
1510 *lessee_id = create.lessee_id;
1511 return create.fd;
1512 }
1513 return -errno;
1514 }
1515
1516 drmModeLesseeListPtr
drmModeListLessees(int fd)1517 drmModeListLessees(int fd)
1518 {
1519 struct drm_mode_list_lessees list;
1520 uint32_t count;
1521 drmModeLesseeListPtr ret;
1522
1523 memclear(list);
1524
1525 if (DRM_IOCTL(fd, DRM_IOCTL_MODE_LIST_LESSEES, &list))
1526 return NULL;
1527
1528 count = list.count_lessees;
1529 ret = drmMalloc(sizeof (drmModeLesseeListRes) + count * sizeof (ret->lessees[0]));
1530 if (!ret)
1531 return NULL;
1532
1533 list.lessees_ptr = VOID2U64(&ret->lessees[0]);
1534 if (DRM_IOCTL(fd, DRM_IOCTL_MODE_LIST_LESSEES, &list)) {
1535 drmFree(ret);
1536 return NULL;
1537 }
1538
1539 ret->count = count;
1540 return ret;
1541 }
1542
1543 drmModeObjectListPtr
drmModeGetLease(int fd)1544 drmModeGetLease(int fd)
1545 {
1546 struct drm_mode_get_lease get;
1547 uint32_t count;
1548 drmModeObjectListPtr ret;
1549
1550 memclear(get);
1551
1552 if (DRM_IOCTL(fd, DRM_IOCTL_MODE_GET_LEASE, &get))
1553 return NULL;
1554
1555 count = get.count_objects;
1556 ret = drmMalloc(sizeof (drmModeObjectListRes) + count * sizeof (ret->objects[0]));
1557 if (!ret)
1558 return NULL;
1559
1560 get.objects_ptr = VOID2U64(&ret->objects[0]);
1561 if (DRM_IOCTL(fd, DRM_IOCTL_MODE_GET_LEASE, &get)) {
1562 drmFree(ret);
1563 return NULL;
1564 }
1565
1566 ret->count = count;
1567 return ret;
1568 }
1569
1570 int
drmModeRevokeLease(int fd,uint32_t lessee_id)1571 drmModeRevokeLease(int fd, uint32_t lessee_id)
1572 {
1573 struct drm_mode_revoke_lease revoke;
1574 int ret;
1575
1576 memclear(revoke);
1577
1578 revoke.lessee_id = lessee_id;
1579
1580 ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_REVOKE_LEASE, &revoke);
1581 if (ret == 0)
1582 return 0;
1583 return -errno;
1584 }
1585