automake: pick up all files for distribution.
[platform/upstream/libdrm.git] / xf86drmMode.c
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 diffrent headers on diffrent
38  * platforms find which headers to include to get uint32_t
39  */
40 #include <stdint.h>
41 #include <sys/ioctl.h>
42 #include <stdio.h>
43
44 #ifdef HAVE_CONFIG_H
45 #include "config.h"
46 #endif
47
48 #include "xf86drmMode.h"
49 #include "xf86drm.h"
50 #include <drm.h>
51 #include <string.h>
52 #include <dirent.h>
53 #include <unistd.h>
54 #include <errno.h>
55
56 #ifdef HAVE_VALGRIND
57 #include <valgrind.h>
58 #include <memcheck.h>
59 #define VG(x) x
60 #else
61 #define VG(x)
62 #endif
63
64 #define VG_CLEAR(s) VG(memset(&s, 0, sizeof(s)))
65
66 #define U642VOID(x) ((void *)(unsigned long)(x))
67 #define VOID2U64(x) ((uint64_t)(unsigned long)(x))
68
69 static inline int DRM_IOCTL(int fd, unsigned long cmd, void *arg)
70 {
71         int ret = drmIoctl(fd, cmd, arg);
72         return ret < 0 ? -errno : ret;
73 }
74
75 /*
76  * Util functions
77  */
78
79 void* drmAllocCpy(void *array, int count, int entry_size)
80 {
81         char *r;
82         int i;
83
84         if (!count || !array || !entry_size)
85                 return 0;
86
87         if (!(r = drmMalloc(count*entry_size)))
88                 return 0;
89
90         for (i = 0; i < count; i++)
91                 memcpy(r+(entry_size*i), array+(entry_size*i), entry_size);
92
93         return r;
94 }
95
96 /*
97  * A couple of free functions.
98  */
99
100 void drmModeFreeModeInfo(drmModeModeInfoPtr ptr)
101 {
102         if (!ptr)
103                 return;
104
105         drmFree(ptr);
106 }
107
108 void drmModeFreeResources(drmModeResPtr ptr)
109 {
110         if (!ptr)
111                 return;
112
113         drmFree(ptr->fbs);
114         drmFree(ptr->crtcs);
115         drmFree(ptr->connectors);
116         drmFree(ptr->encoders);
117         drmFree(ptr);
118
119 }
120
121 void drmModeFreeFB(drmModeFBPtr ptr)
122 {
123         if (!ptr)
124                 return;
125
126         /* we might add more frees later. */
127         drmFree(ptr);
128 }
129
130 void drmModeFreeCrtc(drmModeCrtcPtr ptr)
131 {
132         if (!ptr)
133                 return;
134
135         drmFree(ptr);
136
137 }
138
139 void drmModeFreeConnector(drmModeConnectorPtr ptr)
140 {
141         if (!ptr)
142                 return;
143
144         drmFree(ptr->encoders);
145         drmFree(ptr->prop_values);
146         drmFree(ptr->props);
147         drmFree(ptr->modes);
148         drmFree(ptr);
149
150 }
151
152 void drmModeFreeEncoder(drmModeEncoderPtr ptr)
153 {
154         drmFree(ptr);
155 }
156
157 /*
158  * ModeSetting functions.
159  */
160
161 drmModeResPtr drmModeGetResources(int fd)
162 {
163         struct drm_mode_card_res res, counts;
164         drmModeResPtr r = 0;
165
166 retry:
167         memset(&res, 0, sizeof(struct drm_mode_card_res));
168         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
169                 return 0;
170
171         counts = res;
172
173         if (res.count_fbs) {
174                 res.fb_id_ptr = VOID2U64(drmMalloc(res.count_fbs*sizeof(uint32_t)));
175                 if (!res.fb_id_ptr)
176                         goto err_allocs;
177         }
178         if (res.count_crtcs) {
179                 res.crtc_id_ptr = VOID2U64(drmMalloc(res.count_crtcs*sizeof(uint32_t)));
180                 if (!res.crtc_id_ptr)
181                         goto err_allocs;
182         }
183         if (res.count_connectors) {
184                 res.connector_id_ptr = VOID2U64(drmMalloc(res.count_connectors*sizeof(uint32_t)));
185                 if (!res.connector_id_ptr)
186                         goto err_allocs;
187         }
188         if (res.count_encoders) {
189                 res.encoder_id_ptr = VOID2U64(drmMalloc(res.count_encoders*sizeof(uint32_t)));
190                 if (!res.encoder_id_ptr)
191                         goto err_allocs;
192         }
193
194         if (drmIoctl(fd, DRM_IOCTL_MODE_GETRESOURCES, &res))
195                 goto err_allocs;
196
197         /* The number of available connectors and etc may have changed with a
198          * hotplug event in between the ioctls, in which case the field is
199          * silently ignored by the kernel.
200          */
201         if (counts.count_fbs < res.count_fbs ||
202             counts.count_crtcs < res.count_crtcs ||
203             counts.count_connectors < res.count_connectors ||
204             counts.count_encoders < res.count_encoders)
205         {
206                 drmFree(U642VOID(res.fb_id_ptr));
207                 drmFree(U642VOID(res.crtc_id_ptr));
208                 drmFree(U642VOID(res.connector_id_ptr));
209                 drmFree(U642VOID(res.encoder_id_ptr));
210
211                 goto retry;
212         }
213
214         /*
215          * return
216          */
217         if (!(r = drmMalloc(sizeof(*r))))
218                 goto err_allocs;
219
220         r->min_width     = res.min_width;
221         r->max_width     = res.max_width;
222         r->min_height    = res.min_height;
223         r->max_height    = res.max_height;
224         r->count_fbs     = res.count_fbs;
225         r->count_crtcs   = res.count_crtcs;
226         r->count_connectors = res.count_connectors;
227         r->count_encoders = res.count_encoders;
228
229         r->fbs        = drmAllocCpy(U642VOID(res.fb_id_ptr), res.count_fbs, sizeof(uint32_t));
230         r->crtcs      = drmAllocCpy(U642VOID(res.crtc_id_ptr), res.count_crtcs, sizeof(uint32_t));
231         r->connectors = drmAllocCpy(U642VOID(res.connector_id_ptr), res.count_connectors, sizeof(uint32_t));
232         r->encoders   = drmAllocCpy(U642VOID(res.encoder_id_ptr), res.count_encoders, sizeof(uint32_t));
233         if ((res.count_fbs && !r->fbs) ||
234             (res.count_crtcs && !r->crtcs) ||
235             (res.count_connectors && !r->connectors) ||
236             (res.count_encoders && !r->encoders))
237         {
238                 drmFree(r->fbs);
239                 drmFree(r->crtcs);
240                 drmFree(r->connectors);
241                 drmFree(r->encoders);
242                 drmFree(r);
243                 r = 0;
244         }
245
246 err_allocs:
247         drmFree(U642VOID(res.fb_id_ptr));
248         drmFree(U642VOID(res.crtc_id_ptr));
249         drmFree(U642VOID(res.connector_id_ptr));
250         drmFree(U642VOID(res.encoder_id_ptr));
251
252         return r;
253 }
254
255 int drmModeAddFB(int fd, uint32_t width, uint32_t height, uint8_t depth,
256                  uint8_t bpp, uint32_t pitch, uint32_t bo_handle,
257                  uint32_t *buf_id)
258 {
259         struct drm_mode_fb_cmd f;
260         int ret;
261
262         VG_CLEAR(f);
263         f.width  = width;
264         f.height = height;
265         f.pitch  = pitch;
266         f.bpp    = bpp;
267         f.depth  = depth;
268         f.handle = bo_handle;
269
270         if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB, &f)))
271                 return ret;
272
273         *buf_id = f.fb_id;
274         return 0;
275 }
276
277 int drmModeAddFB2(int fd, uint32_t width, uint32_t height,
278                   uint32_t pixel_format, uint32_t bo_handles[4],
279                   uint32_t pitches[4], uint32_t offsets[4],
280                   uint32_t *buf_id, uint32_t flags)
281 {
282         struct drm_mode_fb_cmd2 f;
283         int ret;
284
285         f.width  = width;
286         f.height = height;
287         f.pixel_format = pixel_format;
288         f.flags = flags;
289         memcpy(f.handles, bo_handles, 4 * sizeof(bo_handles[0]));
290         memcpy(f.pitches, pitches, 4 * sizeof(pitches[0]));
291         memcpy(f.offsets, offsets, 4 * sizeof(offsets[0]));
292
293         if ((ret = DRM_IOCTL(fd, DRM_IOCTL_MODE_ADDFB2, &f)))
294                 return ret;
295
296         *buf_id = f.fb_id;
297         return 0;
298 }
299
300 int drmModeRmFB(int fd, uint32_t bufferId)
301 {
302         return DRM_IOCTL(fd, DRM_IOCTL_MODE_RMFB, &bufferId);
303
304
305 }
306
307 drmModeFBPtr drmModeGetFB(int fd, uint32_t buf)
308 {
309         struct drm_mode_fb_cmd info;
310         drmModeFBPtr r;
311
312         info.fb_id = buf;
313
314         if (drmIoctl(fd, DRM_IOCTL_MODE_GETFB, &info))
315                 return NULL;
316
317         if (!(r = drmMalloc(sizeof(*r))))
318                 return NULL;
319
320         r->fb_id = info.fb_id;
321         r->width = info.width;
322         r->height = info.height;
323         r->pitch = info.pitch;
324         r->bpp = info.bpp;
325         r->handle = info.handle;
326         r->depth = info.depth;
327
328         return r;
329 }
330
331 int drmModeDirtyFB(int fd, uint32_t bufferId,
332                    drmModeClipPtr clips, uint32_t num_clips)
333 {
334         struct drm_mode_fb_dirty_cmd dirty = { 0 };
335
336         dirty.fb_id = bufferId;
337         dirty.clips_ptr = VOID2U64(clips);
338         dirty.num_clips = num_clips;
339
340         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DIRTYFB, &dirty);
341 }
342
343
344 /*
345  * Crtc functions
346  */
347
348 drmModeCrtcPtr drmModeGetCrtc(int fd, uint32_t crtcId)
349 {
350         struct drm_mode_crtc crtc;
351         drmModeCrtcPtr r;
352
353         VG_CLEAR(crtc);
354         crtc.crtc_id = crtcId;
355
356         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCRTC, &crtc))
357                 return 0;
358
359         /*
360          * return
361          */
362
363         if (!(r = drmMalloc(sizeof(*r))))
364                 return 0;
365
366         r->crtc_id         = crtc.crtc_id;
367         r->x               = crtc.x;
368         r->y               = crtc.y;
369         r->mode_valid      = crtc.mode_valid;
370         if (r->mode_valid) {
371                 memcpy(&r->mode, &crtc.mode, sizeof(struct drm_mode_modeinfo));
372                 r->width = crtc.mode.hdisplay;
373                 r->height = crtc.mode.vdisplay;
374         }
375         r->buffer_id       = crtc.fb_id;
376         r->gamma_size      = crtc.gamma_size;
377         return r;
378 }
379
380
381 int drmModeSetCrtc(int fd, uint32_t crtcId, uint32_t bufferId,
382                    uint32_t x, uint32_t y, uint32_t *connectors, int count,
383                    drmModeModeInfoPtr mode)
384 {
385         struct drm_mode_crtc crtc;
386
387         VG_CLEAR(crtc);
388         crtc.x             = x;
389         crtc.y             = y;
390         crtc.crtc_id       = crtcId;
391         crtc.fb_id         = bufferId;
392         crtc.set_connectors_ptr = VOID2U64(connectors);
393         crtc.count_connectors = count;
394         if (mode) {
395           memcpy(&crtc.mode, mode, sizeof(struct drm_mode_modeinfo));
396           crtc.mode_valid = 1;
397         } else
398           crtc.mode_valid = 0;
399
400         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETCRTC, &crtc);
401 }
402
403 /*
404  * Cursor manipulation
405  */
406
407 int drmModeSetCursor(int fd, uint32_t crtcId, uint32_t bo_handle, uint32_t width, uint32_t height)
408 {
409         struct drm_mode_cursor arg;
410
411         arg.flags = DRM_MODE_CURSOR_BO;
412         arg.crtc_id = crtcId;
413         arg.width = width;
414         arg.height = height;
415         arg.handle = bo_handle;
416
417         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
418 }
419
420 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)
421 {
422         struct drm_mode_cursor2 arg;
423
424         arg.flags = DRM_MODE_CURSOR_BO;
425         arg.crtc_id = crtcId;
426         arg.width = width;
427         arg.height = height;
428         arg.handle = bo_handle;
429         arg.hot_x = hot_x;
430         arg.hot_y = hot_y;
431
432         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR2, &arg);
433 }
434
435 int drmModeMoveCursor(int fd, uint32_t crtcId, int x, int y)
436 {
437         struct drm_mode_cursor arg;
438
439         arg.flags = DRM_MODE_CURSOR_MOVE;
440         arg.crtc_id = crtcId;
441         arg.x = x;
442         arg.y = y;
443
444         return DRM_IOCTL(fd, DRM_IOCTL_MODE_CURSOR, &arg);
445 }
446
447 /*
448  * Encoder get
449  */
450 drmModeEncoderPtr drmModeGetEncoder(int fd, uint32_t encoder_id)
451 {
452         struct drm_mode_get_encoder enc;
453         drmModeEncoderPtr r = NULL;
454
455         enc.encoder_id = encoder_id;
456         enc.crtc_id = 0;
457         enc.encoder_type = 0;
458         enc.possible_crtcs = 0;
459         enc.possible_clones = 0;
460
461         if (drmIoctl(fd, DRM_IOCTL_MODE_GETENCODER, &enc))
462                 return 0;
463
464         if (!(r = drmMalloc(sizeof(*r))))
465                 return 0;
466
467         r->encoder_id = enc.encoder_id;
468         r->crtc_id = enc.crtc_id;
469         r->encoder_type = enc.encoder_type;
470         r->possible_crtcs = enc.possible_crtcs;
471         r->possible_clones = enc.possible_clones;
472
473         return r;
474 }
475
476 /*
477  * Connector manipulation
478  */
479
480 drmModeConnectorPtr drmModeGetConnector(int fd, uint32_t connector_id)
481 {
482         struct drm_mode_get_connector conn, counts;
483         drmModeConnectorPtr r = NULL;
484
485 retry:
486         memset(&conn, 0, sizeof(struct drm_mode_get_connector));
487         conn.connector_id = connector_id;
488
489         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
490                 return 0;
491
492         counts = conn;
493
494         if (conn.count_props) {
495                 conn.props_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint32_t)));
496                 if (!conn.props_ptr)
497                         goto err_allocs;
498                 conn.prop_values_ptr = VOID2U64(drmMalloc(conn.count_props*sizeof(uint64_t)));
499                 if (!conn.prop_values_ptr)
500                         goto err_allocs;
501         }
502
503         if (conn.count_modes) {
504                 conn.modes_ptr = VOID2U64(drmMalloc(conn.count_modes*sizeof(struct drm_mode_modeinfo)));
505                 if (!conn.modes_ptr)
506                         goto err_allocs;
507         }
508
509         if (conn.count_encoders) {
510                 conn.encoders_ptr = VOID2U64(drmMalloc(conn.count_encoders*sizeof(uint32_t)));
511                 if (!conn.encoders_ptr)
512                         goto err_allocs;
513         }
514
515         if (drmIoctl(fd, DRM_IOCTL_MODE_GETCONNECTOR, &conn))
516                 goto err_allocs;
517
518         /* The number of available connectors and etc may have changed with a
519          * hotplug event in between the ioctls, in which case the field is
520          * silently ignored by the kernel.
521          */
522         if (counts.count_props < conn.count_props ||
523             counts.count_modes < conn.count_modes ||
524             counts.count_encoders < conn.count_encoders) {
525                 drmFree(U642VOID(conn.props_ptr));
526                 drmFree(U642VOID(conn.prop_values_ptr));
527                 drmFree(U642VOID(conn.modes_ptr));
528                 drmFree(U642VOID(conn.encoders_ptr));
529
530                 goto retry;
531         }
532
533         if(!(r = drmMalloc(sizeof(*r)))) {
534                 goto err_allocs;
535         }
536
537         r->connector_id = conn.connector_id;
538         r->encoder_id = conn.encoder_id;
539         r->connection   = conn.connection;
540         r->mmWidth      = conn.mm_width;
541         r->mmHeight     = conn.mm_height;
542         /* convert subpixel from kernel to userspace */
543         r->subpixel     = conn.subpixel + 1;
544         r->count_modes  = conn.count_modes;
545         r->count_props  = conn.count_props;
546         r->props        = drmAllocCpy(U642VOID(conn.props_ptr), conn.count_props, sizeof(uint32_t));
547         r->prop_values  = drmAllocCpy(U642VOID(conn.prop_values_ptr), conn.count_props, sizeof(uint64_t));
548         r->modes        = drmAllocCpy(U642VOID(conn.modes_ptr), conn.count_modes, sizeof(struct drm_mode_modeinfo));
549         r->count_encoders = conn.count_encoders;
550         r->encoders     = drmAllocCpy(U642VOID(conn.encoders_ptr), conn.count_encoders, sizeof(uint32_t));
551         r->connector_type  = conn.connector_type;
552         r->connector_type_id = conn.connector_type_id;
553
554         if ((r->count_props && !r->props) ||
555             (r->count_props && !r->prop_values) ||
556             (r->count_modes && !r->modes) ||
557             (r->count_encoders && !r->encoders)) {
558                 drmFree(r->props);
559                 drmFree(r->prop_values);
560                 drmFree(r->modes);
561                 drmFree(r->encoders);
562                 drmFree(r);
563                 r = 0;
564         }
565
566 err_allocs:
567         drmFree(U642VOID(conn.prop_values_ptr));
568         drmFree(U642VOID(conn.props_ptr));
569         drmFree(U642VOID(conn.modes_ptr));
570         drmFree(U642VOID(conn.encoders_ptr));
571
572         return r;
573 }
574
575 int drmModeAttachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
576 {
577         struct drm_mode_mode_cmd res;
578
579         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
580         res.connector_id = connector_id;
581
582         return DRM_IOCTL(fd, DRM_IOCTL_MODE_ATTACHMODE, &res);
583 }
584
585 int drmModeDetachMode(int fd, uint32_t connector_id, drmModeModeInfoPtr mode_info)
586 {
587         struct drm_mode_mode_cmd res;
588
589         memcpy(&res.mode, mode_info, sizeof(struct drm_mode_modeinfo));
590         res.connector_id = connector_id;
591
592         return DRM_IOCTL(fd, DRM_IOCTL_MODE_DETACHMODE, &res);
593 }
594
595
596 drmModePropertyPtr drmModeGetProperty(int fd, uint32_t property_id)
597 {
598         struct drm_mode_get_property prop;
599         drmModePropertyPtr r;
600
601         VG_CLEAR(prop);
602         prop.prop_id = property_id;
603         prop.count_enum_blobs = 0;
604         prop.count_values = 0;
605         prop.flags = 0;
606         prop.enum_blob_ptr = 0;
607         prop.values_ptr = 0;
608
609         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop))
610                 return 0;
611
612         if (prop.count_values)
613                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_values * sizeof(uint64_t)));
614
615         if (prop.count_enum_blobs && (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)))
616                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(struct drm_mode_property_enum)));
617
618         if (prop.count_enum_blobs && (prop.flags & DRM_MODE_PROP_BLOB)) {
619                 prop.values_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
620                 prop.enum_blob_ptr = VOID2U64(drmMalloc(prop.count_enum_blobs * sizeof(uint32_t)));
621         }
622
623         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPERTY, &prop)) {
624                 r = NULL;
625                 goto err_allocs;
626         }
627
628         if (!(r = drmMalloc(sizeof(*r))))
629                 return NULL;
630
631         r->prop_id = prop.prop_id;
632         r->count_values = prop.count_values;
633
634         r->flags = prop.flags;
635         if (prop.count_values)
636                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_values, sizeof(uint64_t));
637         if (prop.flags & (DRM_MODE_PROP_ENUM | DRM_MODE_PROP_BITMASK)) {
638                 r->count_enums = prop.count_enum_blobs;
639                 r->enums = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(struct drm_mode_property_enum));
640         } else if (prop.flags & DRM_MODE_PROP_BLOB) {
641                 r->values = drmAllocCpy(U642VOID(prop.values_ptr), prop.count_enum_blobs, sizeof(uint32_t));
642                 r->blob_ids = drmAllocCpy(U642VOID(prop.enum_blob_ptr), prop.count_enum_blobs, sizeof(uint32_t));
643                 r->count_blobs = prop.count_enum_blobs;
644         }
645         strncpy(r->name, prop.name, DRM_PROP_NAME_LEN);
646         r->name[DRM_PROP_NAME_LEN-1] = 0;
647
648 err_allocs:
649         drmFree(U642VOID(prop.values_ptr));
650         drmFree(U642VOID(prop.enum_blob_ptr));
651
652         return r;
653 }
654
655 void drmModeFreeProperty(drmModePropertyPtr ptr)
656 {
657         if (!ptr)
658                 return;
659
660         drmFree(ptr->values);
661         drmFree(ptr->enums);
662         drmFree(ptr);
663 }
664
665 drmModePropertyBlobPtr drmModeGetPropertyBlob(int fd, uint32_t blob_id)
666 {
667         struct drm_mode_get_blob blob;
668         drmModePropertyBlobPtr r;
669
670         blob.length = 0;
671         blob.data = 0;
672         blob.blob_id = blob_id;
673
674         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob))
675                 return NULL;
676
677         if (blob.length)
678                 blob.data = VOID2U64(drmMalloc(blob.length));
679
680         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPROPBLOB, &blob)) {
681                 r = NULL;
682                 goto err_allocs;
683         }
684
685         if (!(r = drmMalloc(sizeof(*r))))
686                 goto err_allocs;
687
688         r->id = blob.blob_id;
689         r->length = blob.length;
690         r->data = drmAllocCpy(U642VOID(blob.data), 1, blob.length);
691
692 err_allocs:
693         drmFree(U642VOID(blob.data));
694         return r;
695 }
696
697 void drmModeFreePropertyBlob(drmModePropertyBlobPtr ptr)
698 {
699         if (!ptr)
700                 return;
701
702         drmFree(ptr->data);
703         drmFree(ptr);
704 }
705
706 int drmModeConnectorSetProperty(int fd, uint32_t connector_id, uint32_t property_id,
707                              uint64_t value)
708 {
709         struct drm_mode_connector_set_property osp;
710
711         osp.connector_id = connector_id;
712         osp.prop_id = property_id;
713         osp.value = value;
714
715         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPROPERTY, &osp);
716 }
717
718 /*
719  * checks if a modesetting capable driver has attached to the pci id
720  * returns 0 if modesetting supported.
721  *  -EINVAL or invalid bus id
722  *  -ENOSYS if no modesetting support
723 */
724 int drmCheckModesettingSupported(const char *busid)
725 {
726 #if defined (__linux__)
727         char pci_dev_dir[1024];
728         int domain, bus, dev, func;
729         DIR *sysdir;
730         struct dirent *dent;
731         int found = 0, ret;
732
733         ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev, &func);
734         if (ret != 4)
735                 return -EINVAL;
736
737         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/drm",
738                 domain, bus, dev, func);
739
740         sysdir = opendir(pci_dev_dir);
741         if (sysdir) {
742                 dent = readdir(sysdir);
743                 while (dent) {
744                         if (!strncmp(dent->d_name, "controlD", 8)) {
745                                 found = 1;
746                                 break;
747                         }
748
749                         dent = readdir(sysdir);
750                 }
751                 closedir(sysdir);
752                 if (found)
753                         return 0;
754         }
755
756         sprintf(pci_dev_dir, "/sys/bus/pci/devices/%04x:%02x:%02x.%d/",
757                 domain, bus, dev, func);
758
759         sysdir = opendir(pci_dev_dir);
760         if (!sysdir)
761                 return -EINVAL;
762
763         dent = readdir(sysdir);
764         while (dent) {
765                 if (!strncmp(dent->d_name, "drm:controlD", 12)) {
766                         found = 1;
767                         break;
768                 }
769
770                 dent = readdir(sysdir);
771         }
772
773         closedir(sysdir);
774         if (found)
775                 return 0;
776 #elif defined (__FreeBSD__) || defined (__FreeBSD_kernel__)
777         char kbusid[1024], sbusid[1024];
778         char oid[128];
779         int domain, bus, dev, func;
780         int i, modesetting, ret;
781         size_t len;
782
783         ret = sscanf(busid, "pci:%04x:%02x:%02x.%d", &domain, &bus, &dev,
784             &func);
785         if (ret != 4)
786                 return -EINVAL;
787         snprintf(kbusid, sizeof(kbusid), "pci:%04x:%02x:%02x.%d", domain, bus,
788             dev, func);
789
790         /* How many GPUs do we expect in the machine ? */
791         for (i = 0; i < 16; i++) {
792                 snprintf(oid, sizeof(oid), "hw.dri.%d.busid", i);
793                 len = sizeof(sbusid);
794                 ret = sysctlbyname(oid, sbusid, &len, NULL, 0);
795                 if (ret == -1) {
796                         if (errno == ENOENT)
797                                 continue;
798                         return -EINVAL;
799                 }
800                 if (strcmp(sbusid, kbusid) != 0)
801                         continue;
802                 snprintf(oid, sizeof(oid), "hw.dri.%d.modesetting", i);
803                 len = sizeof(modesetting);
804                 ret = sysctlbyname(oid, &modesetting, &len, NULL, 0);
805                 if (ret == -1 || len != sizeof(modesetting))
806                         return -EINVAL;
807                 return (modesetting ? 0 : -ENOSYS);
808         }
809 #elif defined(__DragonFly__)
810         return 0;
811 #endif
812         return -ENOSYS;
813
814 }
815
816 int drmModeCrtcGetGamma(int fd, uint32_t crtc_id, uint32_t size,
817                         uint16_t *red, uint16_t *green, uint16_t *blue)
818 {
819         struct drm_mode_crtc_lut l;
820
821         l.crtc_id = crtc_id;
822         l.gamma_size = size;
823         l.red = VOID2U64(red);
824         l.green = VOID2U64(green);
825         l.blue = VOID2U64(blue);
826
827         return DRM_IOCTL(fd, DRM_IOCTL_MODE_GETGAMMA, &l);
828 }
829
830 int drmModeCrtcSetGamma(int fd, uint32_t crtc_id, uint32_t size,
831                         uint16_t *red, uint16_t *green, uint16_t *blue)
832 {
833         struct drm_mode_crtc_lut l;
834
835         l.crtc_id = crtc_id;
836         l.gamma_size = size;
837         l.red = VOID2U64(red);
838         l.green = VOID2U64(green);
839         l.blue = VOID2U64(blue);
840
841         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETGAMMA, &l);
842 }
843
844 int drmHandleEvent(int fd, drmEventContextPtr evctx)
845 {
846         char buffer[1024];
847         int len, i;
848         struct drm_event *e;
849         struct drm_event_vblank *vblank;
850         
851         /* The DRM read semantics guarantees that we always get only
852          * complete events. */
853
854         len = read(fd, buffer, sizeof buffer);
855         if (len == 0)
856                 return 0;
857         if (len < sizeof *e)
858                 return -1;
859
860         i = 0;
861         while (i < len) {
862                 e = (struct drm_event *) &buffer[i];
863                 switch (e->type) {
864                 case DRM_EVENT_VBLANK:
865                         if (evctx->version < 1 ||
866                             evctx->vblank_handler == NULL)
867                                 break;
868                         vblank = (struct drm_event_vblank *) e;
869                         evctx->vblank_handler(fd,
870                                               vblank->sequence, 
871                                               vblank->tv_sec,
872                                               vblank->tv_usec,
873                                               U642VOID (vblank->user_data));
874                         break;
875                 case DRM_EVENT_FLIP_COMPLETE:
876                         if (evctx->version < 2 ||
877                             evctx->page_flip_handler == NULL)
878                                 break;
879                         vblank = (struct drm_event_vblank *) e;
880                         evctx->page_flip_handler(fd,
881                                                  vblank->sequence,
882                                                  vblank->tv_sec,
883                                                  vblank->tv_usec,
884                                                  U642VOID (vblank->user_data));
885                         break;
886                 default:
887                         break;
888                 }
889                 i += e->length;
890         }
891
892         return 0;
893 }
894
895 int drmModePageFlip(int fd, uint32_t crtc_id, uint32_t fb_id,
896                     uint32_t flags, void *user_data)
897 {
898         struct drm_mode_crtc_page_flip flip;
899
900         flip.fb_id = fb_id;
901         flip.crtc_id = crtc_id;
902         flip.user_data = VOID2U64(user_data);
903         flip.flags = flags;
904         flip.reserved = 0;
905
906         return DRM_IOCTL(fd, DRM_IOCTL_MODE_PAGE_FLIP, &flip);
907 }
908
909 int drmModeSetPlane(int fd, uint32_t plane_id, uint32_t crtc_id,
910                     uint32_t fb_id, uint32_t flags,
911                     int32_t crtc_x, int32_t crtc_y,
912                     uint32_t crtc_w, uint32_t crtc_h,
913                     uint32_t src_x, uint32_t src_y,
914                     uint32_t src_w, uint32_t src_h)
915
916 {
917         struct drm_mode_set_plane s;
918
919         s.plane_id = plane_id;
920         s.crtc_id = crtc_id;
921         s.fb_id = fb_id;
922         s.flags = flags;
923         s.crtc_x = crtc_x;
924         s.crtc_y = crtc_y;
925         s.crtc_w = crtc_w;
926         s.crtc_h = crtc_h;
927         s.src_x = src_x;
928         s.src_y = src_y;
929         s.src_w = src_w;
930         s.src_h = src_h;
931
932         return DRM_IOCTL(fd, DRM_IOCTL_MODE_SETPLANE, &s);
933 }
934
935
936 drmModePlanePtr drmModeGetPlane(int fd, uint32_t plane_id)
937 {
938         struct drm_mode_get_plane ovr, counts;
939         drmModePlanePtr r = 0;
940
941 retry:
942         memset(&ovr, 0, sizeof(struct drm_mode_get_plane));
943         ovr.plane_id = plane_id;
944         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
945                 return 0;
946
947         counts = ovr;
948
949         if (ovr.count_format_types) {
950                 ovr.format_type_ptr = VOID2U64(drmMalloc(ovr.count_format_types *
951                                                          sizeof(uint32_t)));
952                 if (!ovr.format_type_ptr)
953                         goto err_allocs;
954         }
955
956         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANE, &ovr))
957                 goto err_allocs;
958
959         if (counts.count_format_types < ovr.count_format_types) {
960                 drmFree(U642VOID(ovr.format_type_ptr));
961                 goto retry;
962         }
963
964         if (!(r = drmMalloc(sizeof(*r))))
965                 goto err_allocs;
966
967         r->count_formats = ovr.count_format_types;
968         r->plane_id = ovr.plane_id;
969         r->crtc_id = ovr.crtc_id;
970         r->fb_id = ovr.fb_id;
971         r->possible_crtcs = ovr.possible_crtcs;
972         r->gamma_size = ovr.gamma_size;
973         r->formats = drmAllocCpy(U642VOID(ovr.format_type_ptr),
974                                  ovr.count_format_types, sizeof(uint32_t));
975         if (ovr.count_format_types && !r->formats) {
976                 drmFree(r->formats);
977                 drmFree(r);
978                 r = 0;
979         }
980
981 err_allocs:
982         drmFree(U642VOID(ovr.format_type_ptr));
983
984         return r;
985 }
986
987 void drmModeFreePlane(drmModePlanePtr ptr)
988 {
989         if (!ptr)
990                 return;
991
992         drmFree(ptr->formats);
993         drmFree(ptr);
994 }
995
996 drmModePlaneResPtr drmModeGetPlaneResources(int fd)
997 {
998         struct drm_mode_get_plane_res res, counts;
999         drmModePlaneResPtr r = 0;
1000
1001 retry:
1002         memset(&res, 0, sizeof(struct drm_mode_get_plane_res));
1003         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1004                 return 0;
1005
1006         counts = res;
1007
1008         if (res.count_planes) {
1009                 res.plane_id_ptr = VOID2U64(drmMalloc(res.count_planes *
1010                                                         sizeof(uint32_t)));
1011                 if (!res.plane_id_ptr)
1012                         goto err_allocs;
1013         }
1014
1015         if (drmIoctl(fd, DRM_IOCTL_MODE_GETPLANERESOURCES, &res))
1016                 goto err_allocs;
1017
1018         if (counts.count_planes < res.count_planes) {
1019                 drmFree(U642VOID(res.plane_id_ptr));
1020                 goto retry;
1021         }
1022
1023         if (!(r = drmMalloc(sizeof(*r))))
1024                 goto err_allocs;
1025
1026         r->count_planes = res.count_planes;
1027         r->planes = drmAllocCpy(U642VOID(res.plane_id_ptr),
1028                                   res.count_planes, sizeof(uint32_t));
1029         if (res.count_planes && !r->planes) {
1030                 drmFree(r->planes);
1031                 drmFree(r);
1032                 r = 0;
1033         }
1034
1035 err_allocs:
1036         drmFree(U642VOID(res.plane_id_ptr));
1037
1038         return r;
1039 }
1040
1041 void drmModeFreePlaneResources(drmModePlaneResPtr ptr)
1042 {
1043         if (!ptr)
1044                 return;
1045
1046         drmFree(ptr->planes);
1047         drmFree(ptr);
1048 }
1049
1050 drmModeObjectPropertiesPtr drmModeObjectGetProperties(int fd,
1051                                                       uint32_t object_id,
1052                                                       uint32_t object_type)
1053 {
1054         struct drm_mode_obj_get_properties properties;
1055         drmModeObjectPropertiesPtr ret = NULL;
1056         uint32_t count;
1057
1058 retry:
1059         memset(&properties, 0, sizeof(struct drm_mode_obj_get_properties));
1060         properties.obj_id = object_id;
1061         properties.obj_type = object_type;
1062
1063         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1064                 return 0;
1065
1066         count = properties.count_props;
1067
1068         if (count) {
1069                 properties.props_ptr = VOID2U64(drmMalloc(count *
1070                                                           sizeof(uint32_t)));
1071                 if (!properties.props_ptr)
1072                         goto err_allocs;
1073                 properties.prop_values_ptr = VOID2U64(drmMalloc(count *
1074                                                       sizeof(uint64_t)));
1075                 if (!properties.prop_values_ptr)
1076                         goto err_allocs;
1077         }
1078
1079         if (drmIoctl(fd, DRM_IOCTL_MODE_OBJ_GETPROPERTIES, &properties))
1080                 goto err_allocs;
1081
1082         if (count < properties.count_props) {
1083                 drmFree(U642VOID(properties.props_ptr));
1084                 drmFree(U642VOID(properties.prop_values_ptr));
1085                 goto retry;
1086         }
1087         count = properties.count_props;
1088
1089         ret = drmMalloc(sizeof(*ret));
1090         if (!ret)
1091                 goto err_allocs;
1092
1093         ret->count_props = count;
1094         ret->props = drmAllocCpy(U642VOID(properties.props_ptr),
1095                                  count, sizeof(uint32_t));
1096         ret->prop_values = drmAllocCpy(U642VOID(properties.prop_values_ptr),
1097                                        count, sizeof(uint64_t));
1098         if (ret->count_props && (!ret->props || !ret->prop_values)) {
1099                 drmFree(ret->props);
1100                 drmFree(ret->prop_values);
1101                 drmFree(ret);
1102                 ret = NULL;
1103         }
1104
1105 err_allocs:
1106         drmFree(U642VOID(properties.props_ptr));
1107         drmFree(U642VOID(properties.prop_values_ptr));
1108         return ret;
1109 }
1110
1111 void drmModeFreeObjectProperties(drmModeObjectPropertiesPtr ptr)
1112 {
1113         if (!ptr)
1114                 return;
1115         drmFree(ptr->props);
1116         drmFree(ptr->prop_values);
1117         drmFree(ptr);
1118 }
1119
1120 int drmModeObjectSetProperty(int fd, uint32_t object_id, uint32_t object_type,
1121                              uint32_t property_id, uint64_t value)
1122 {
1123         struct drm_mode_obj_set_property prop;
1124
1125         prop.value = value;
1126         prop.prop_id = property_id;
1127         prop.obj_id = object_id;
1128         prop.obj_type = object_type;
1129
1130         return DRM_IOCTL(fd, DRM_IOCTL_MODE_OBJ_SETPROPERTY, &prop);
1131 }