aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/extras/drm/bsd-core/drmP.h
blob: 0adfef9347fa416d3394a37c2ecdd344344d8c6d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
/* drmP.h -- Private header for Direct Rendering Manager -*- linux-c -*-
 * Created: Mon Jan  4 10:05:05 1999 by faith@precisioninsight.com
 */
/*-
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors:
 *    Rickard E. (Rik) Faith <faith@valinux.com>
 *    Gareth Hughes <gareth@valinux.com>
 *
 */

#ifndef _DRM_P_H_
#define _DRM_P_H_

#if defined(_KERNEL) || defined(__KERNEL__)

typedef struct drm_device drm_device_t;
typedef struct drm_file drm_file_t;

#include <sys/param.h>
#include <sys/queue.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/stat.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/fcntl.h>
#include <sys/uio.h>
#include <sys/filio.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <sys/signalvar.h>
#include <sys/poll.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <vm/vm_map.h>
#include <vm/vm_param.h>
#include <machine/param.h>
#include <machine/pmap.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <machine/sysarch.h>
#include <sys/endian.h>
#include <sys/mman.h>
#if defined(__FreeBSD__)
#include <sys/rman.h>
#include <sys/memrange.h>
#include <pci/agpvar.h>
#include <sys/agpio.h>
#if __FreeBSD_version >= 500000
#include <sys/mutex.h>
#include <dev/pci/pcivar.h>
#include <sys/selinfo.h>
#else /* __FreeBSD_version >= 500000 */
#include <pci/pcivar.h>
#include <sys/select.h>
#endif /* __FreeBSD_version < 500000 */
#elif defined(__NetBSD__)
#include <machine/mtrr.h>
#include <sys/vnode.h>
#include <sys/select.h>
#include <sys/device.h>
#include <sys/resourcevar.h>
#include <sys/lkm.h>
#include <sys/agpio.h>
#include <sys/ttycom.h>
#include <uvm/uvm.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/agpvar.h>
#elif defined(__OpenBSD__)
#include <sys/lkm.h>
#include <uvm/uvm.h>
#endif
#include <sys/bus.h>

#include "drm.h"
#include "drm_linux_list.h"
#include "drm_atomic.h"

#ifdef __FreeBSD__
#include <opt_drm.h>
#ifdef DRM_DEBUG
#undef DRM_DEBUG
#define DRM_DEBUG_DEFAULT_ON 1
#endif /* DRM_DEBUG */
#endif

#if defined(DRM_LINUX) && DRM_LINUX && !defined(__amd64__)
#include <sys/file.h>
#include <sys/proc.h>
#include <machine/../linux/linux.h>
#include <machine/../linux/linux_proto.h>
#else
/* Either it was defined when it shouldn't be (FreeBSD amd64) or it isn't
 * supported on this OS yet.
 */
#undef DRM_LINUX
#define DRM_LINUX 0
#endif

#define DRM_HASH_SIZE	      16 /* Size of key hash table		  */
#define DRM_KERNEL_CONTEXT    0	 /* Change drm_resctx if changed	  */
#define DRM_RESERVED_CONTEXTS 1	 /* Change drm_resctx if changed	  */

#define DRM_MEM_DMA	   0
#define DRM_MEM_SAREA	   1
#define DRM_MEM_DRIVER	   2
#define DRM_MEM_MAGIC	   3
#define DRM_MEM_IOCTLS	   4
#define DRM_MEM_MAPS	   5
#define DRM_MEM_BUFS	   6
#define DRM_MEM_SEGS	   7
#define DRM_MEM_PAGES	   8
#define DRM_MEM_FILES	  9
#define DRM_MEM_QUEUES	  10
#define DRM_MEM_CMDS	  11
#define DRM_MEM_MAPPINGS  12
#define DRM_MEM_BUFLISTS  13
#define DRM_MEM_AGPLISTS  14
#define DRM_MEM_TOTALAGP  15
#define DRM_MEM_BOUNDAGP  16
#define DRM_MEM_CTXBITMAP 17
#define DRM_MEM_STUB	  18
#define DRM_MEM_SGLISTS	  19

#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)

				/* Internal types and structures */
#define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
#define DRM_MIN(a,b) ((a)<(b)?(a):(b))
#define DRM_MAX(a,b) ((a)>(b)?(a):(b))

#define DRM_IF_VERSION(maj, min) (maj << 16 | min)

MALLOC_DECLARE(M_DRM);

#define __OS_HAS_AGP	1

#define DRM_DEV_MODE	(S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
#define DRM_DEV_UID	0
#define DRM_DEV_GID	0

#define wait_queue_head_t	atomic_t
#define DRM_WAKEUP(w)		wakeup((void *)w)
#define DRM_WAKEUP_INT(w)	wakeup(w)
#define DRM_INIT_WAITQUEUE(queue) do {} while (0)

#if defined(__FreeBSD__) && __FreeBSD_version < 502109
#define bus_alloc_resource_any(dev, type, rid, flags) \
	bus_alloc_resource(dev, type, rid, 0ul, ~0ul, 1, flags)
#endif

#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
#define DRM_CURPROC		curthread
#define DRM_STRUCTPROC		struct thread
#define DRM_SPINTYPE		struct mtx
#define DRM_SPININIT(l,name)	mtx_init(&l, name, NULL, MTX_DEF)
#define DRM_SPINUNINIT(l)	mtx_destroy(&l)
#define DRM_SPINLOCK(l)		mtx_lock(l)
#define DRM_SPINUNLOCK(u)	mtx_unlock(u);
#define DRM_SPINLOCK_ASSERT(l)	mtx_assert(l, MA_OWNED)
#define DRM_CURRENTPID		curthread->td_proc->p_pid
#define DRM_LOCK()		mtx_lock(&dev->dev_lock)
#define DRM_UNLOCK() 		mtx_unlock(&dev->dev_lock)
#define DRM_SYSCTL_HANDLER_ARGS	(SYSCTL_HANDLER_ARGS)
#else /* __FreeBSD__ && __FreeBSD_version >= 500000 */
#define DRM_CURPROC		curproc
#define DRM_STRUCTPROC		struct proc
#define DRM_SPINTYPE		struct simplelock
#define DRM_SPININIT(l,name)
#define DRM_SPINUNINIT(l)
#define DRM_SPINLOCK(l)	
#define DRM_SPINUNLOCK(u)
#define DRM_SPINLOCK_ASSERT(l)
#define DRM_CURRENTPID		curproc->p_pid
#define DRM_LOCK()
#define DRM_UNLOCK()
#define DRM_SYSCTL_HANDLER_ARGS	SYSCTL_HANDLER_ARGS
#define spldrm()		spltty()
#endif /* __NetBSD__ || __OpenBSD__ */

/* Currently our DRMFILE (filp) is a void * which is actually the pid
 * of the current process.  It should be a per-open unique pointer, but
 * code for that is not yet written */
#define DRMFILE			void *
#define DRM_IRQ_ARGS		void *arg
typedef void			irqreturn_t;
#define IRQ_HANDLED		/* nothing */
#define IRQ_NONE		/* nothing */

enum {
	DRM_IS_NOT_AGP,
	DRM_MIGHT_BE_AGP,
	DRM_IS_AGP
};
#define DRM_AGP_MEM		struct agp_memory_info

#if defined(__FreeBSD__)
#define DRM_DEVICE							\
	drm_device_t *dev = kdev->si_drv1
#define DRM_IOCTL_ARGS		struct cdev *kdev, u_long cmd, caddr_t data, \
				int flags, DRM_STRUCTPROC *p, DRMFILE filp

#define PAGE_ALIGN(addr) round_page(addr)
/* DRM_SUSER returns true if the user is superuser */
#define DRM_SUSER(p)		(suser(p) == 0)
#define DRM_AGP_FIND_DEVICE()	agp_find_device()
#define DRM_MTRR_WC		MDF_WRITECOMBINE
#define jiffies			ticks

#else /* __FreeBSD__ */

#if defined(__NetBSD__)
#define DRM_DEVICE							\
	drm_device_t *dev = device_lookup(&drm_cd, minor(kdev))
#elif defined(__OpenBSD__)
#define DRM_DEVICE							\
	drm_device_t *dev = (device_lookup(&drm_cd,			\
	    minor(kdev)))->dv_cfdata->cf_driver->cd_devs[minor(kdev)]
#endif /* __OpenBSD__ */
#define DRM_IOCTL_ARGS		dev_t kdev, u_long cmd, caddr_t data, \
				int flags, DRM_STRUCTPROC *p, DRMFILE filp

#define CDEV_MAJOR		34
#define PAGE_ALIGN(addr)	(((addr) + PAGE_SIZE - 1) & PAGE_MASK)
/* DRM_SUSER returns true if the user is superuser */
#define DRM_SUSER(p)		(suser(p->p_ucred, &p->p_acflag) == 0)
#define DRM_AGP_FIND_DEVICE()	agp_find_device(0)
#define DRM_MTRR_WC		MTRR_TYPE_WC
#define jiffies			hardclock_ticks

typedef drm_device_t *device_t;
extern struct cfdriver drm_cd;
#endif /* !__FreeBSD__ */

/* Capabilities taken from src/sys/dev/pci/pcireg.h. */
#ifndef PCIY_AGP
#define PCIY_AGP	0x02
#endif

#ifndef PCIY_EXPRESS
#define PCIY_EXPRESS	0x10
#endif

typedef unsigned long dma_addr_t;
typedef u_int32_t u32;
typedef u_int16_t u16;
typedef u_int8_t u8;

/* DRM_READMEMORYBARRIER() prevents reordering of reads.
 * DRM_WRITEMEMORYBARRIER() prevents reordering of writes.
 * DRM_MEMORYBARRIER() prevents reordering of reads and writes.
 */
#if defined(__i386__)
#define DRM_READMEMORYBARRIER()		__asm __volatile( \
					"lock; addl $0,0(%%esp)" : : : "memory");
#define DRM_WRITEMEMORYBARRIER()	__asm __volatile("" : : : "memory");
#define DRM_MEMORYBARRIER()		__asm __volatile( \
					"lock; addl $0,0(%%esp)" : : : "memory");
#elif defined(__alpha__)
#define DRM_READMEMORYBARRIER()		alpha_mb();
#define DRM_WRITEMEMORYBARRIER()	alpha_wmb();
#define DRM_MEMORYBARRIER()		alpha_mb();
#elif defined(__amd64__)
#define DRM_READMEMORYBARRIER()		__asm __volatile( \
					"lock; addl $0,0(%%rsp)" : : : "memory");
#define DRM_WRITEMEMORYBARRIER()	__asm __volatile("" : : : "memory");
#define DRM_MEMORYBARRIER()		__asm __volatile( \
					"lock; addl $0,0(%%rsp)" : : : "memory");
#endif

#ifdef __FreeBSD__
#define DRM_READ8(map, offset)						\
	*(volatile u_int8_t *) (((unsigned long)(map)->handle) + (offset))
#define DRM_READ16(map, offset)						\
	*(volatile u_int16_t *) (((unsigned long)(map)->handle) + (offset))
#define DRM_READ32(map, offset)						\
	*(volatile u_int32_t *)(((unsigned long)(map)->handle) + (offset))
#define DRM_WRITE8(map, offset, val)					\
	*(volatile u_int8_t *) (((unsigned long)(map)->handle) + (offset)) = val
#define DRM_WRITE16(map, offset, val)					\
	*(volatile u_int16_t *) (((unsigned long)(map)->handle) + (offset)) = val
#define DRM_WRITE32(map, offset, val)					\
	*(volatile u_int32_t *)(((unsigned long)(map)->handle) + (offset)) = val

#define DRM_VERIFYAREA_READ( uaddr, size )		\
	(!useracc(__DECONST(caddr_t, uaddr), size, VM_PROT_READ))

#else /* __FreeBSD__ */

typedef vaddr_t vm_offset_t;

#define DRM_READ8(map, offset)		\
	bus_space_read_1( (map)->bst, (map)->bsh, (offset))
#define DRM_READ16(map, offset)		\
	bus_space_read_2( (map)->bst, (map)->bsh, (offset))
#define DRM_READ32(map, offset)		\
	bus_space_read_4( (map)->bst, (map)->bsh, (offset))
#define DRM_WRITE8(map, offset, val)	\
	bus_space_write_1((map)->bst, (map)->bsh, (offset), (val))
#define DRM_WRITE16(map, offset, val)	\
	bus_space_write_2((map)->bst, (map)->bsh, (offset), (val))
#define DRM_WRITE32(map, offset, val)	\
	bus_space_write_4((map)->bst, (map)->bsh, (offset), (val))

#define DRM_VERIFYAREA_READ( uaddr, size )		\
	(!uvm_useracc((caddr_t)uaddr, size, VM_PROT_READ))
#endif /* !__FreeBSD__ */

#define DRM_COPY_TO_USER_IOCTL(user, kern, size)	\
	if ( IOCPARM_LEN(cmd) != size)			\
		return EINVAL;				\
	*user = kern;
#define DRM_COPY_FROM_USER_IOCTL(kern, user, size) \
	if ( IOCPARM_LEN(cmd) != size)			\
		return EINVAL;				\
	kern = *user;
#define DRM_COPY_TO_USER(user, kern, size) \
	copyout(kern, user, size)
#define DRM_COPY_FROM_USER(kern, user, size) \
	copyin(user, kern, size)
#define DRM_COPY_FROM_USER_UNCHECKED(arg1, arg2, arg3) 	\
	copyin(arg2, arg1, arg3)
#define DRM_COPY_TO_USER_UNCHECKED(arg1, arg2, arg3)	\
	copyout(arg2, arg1, arg3)
#if __FreeBSD_version > 500000
#define DRM_GET_USER_UNCHECKED(val, uaddr)		\
	((val) = fuword32(uaddr), 0)
#else
#define DRM_GET_USER_UNCHECKED(val, uaddr)		\
	((val) = fuword(uaddr), 0)
#endif

#define cpu_to_le32(x) htole32(x)
#define le32_to_cpu(x) le32toh(x)

#define DRM_ERR(v)		v
#define DRM_HZ			hz
#define DRM_UDELAY(udelay)	DELAY(udelay)
#define DRM_TIME_SLICE		(hz/20)  /* Time slice for GLXContexts	  */

#define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {	\
	(_map) = (_dev)->context_sareas[_ctx];		\
} while(0)

#define DRM_GET_PRIV_WITH_RETURN(_priv, _filp)			\
do {								\
	if (_filp != (DRMFILE)(intptr_t)DRM_CURRENTPID) {	\
		DRM_ERROR("filp doesn't match curproc\n");	\
		return EINVAL;					\
	}							\
	_priv = drm_find_file_by_proc(dev, DRM_CURPROC);	\
	if (_priv == NULL) {					\
		DRM_ERROR("can't find authenticator\n");	\
		return EINVAL;					\
	}							\
} while (0)

#define LOCK_TEST_WITH_RETURN(dev, filp)				\
do {									\
	if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ||		\
	     dev->lock.filp != filp) {					\
		DRM_ERROR("%s called without lock held\n",		\
			   __FUNCTION__);				\
		return EINVAL;						\
	}								\
} while (0)

#define DRM_GETSAREA()					\
do {								\
	drm_local_map_t *map;					\
	DRM_SPINLOCK_ASSERT(&dev->dev_lock);			\
	TAILQ_FOREACH(map, &dev->maplist, link) {		\
		if (map->type == _DRM_SHM &&			\
			map->flags & _DRM_CONTAINS_LOCK) {	\
			dev_priv->sarea = map;			\
			break;					\
		}						\
	}							\
} while (0)

#if defined(__FreeBSD__) && __FreeBSD_version > 500000
#define DRM_WAIT_ON( ret, queue, timeout, condition )		\
for ( ret = 0 ; !ret && !(condition) ; ) {			\
	DRM_UNLOCK();						\
	mtx_lock(&dev->irq_lock);				\
	if (!(condition))					\
	   ret = msleep(&(queue), &dev->irq_lock, 		\
			 PZERO | PCATCH, "drmwtq", (timeout));	\
	mtx_unlock(&dev->irq_lock);				\
	DRM_LOCK();						\
}
#else
#define DRM_WAIT_ON( ret, queue, timeout, condition )	\
for ( ret = 0 ; !ret && !(condition) ; ) {		\
        int s = spldrm();				\
	if (!(condition))				\
	   ret = tsleep( &(queue), PZERO | PCATCH, 	\
			 "drmwtq", (timeout) );		\
	splx(s);					\
}
#endif

#define DRM_ERROR(fmt, arg...) \
	printf("error: [" DRM_NAME ":pid%d:%s] *ERROR* " fmt,		\
	    DRM_CURRENTPID, __func__ , ## arg)

#define DRM_INFO(fmt, arg...)  printf("info: [" DRM_NAME "] " fmt , ## arg)

#define DRM_DEBUG(fmt, arg...) do {					\
	if (drm_debug_flag)						\
		printf("[" DRM_NAME ":pid%d:%s] " fmt, DRM_CURRENTPID,	\
			__func__ , ## arg);				\
} while (0)

typedef struct drm_pci_id_list
{
	int vendor;
	int device;
	long driver_private;
	char *name;
} drm_pci_id_list_t;

#define DRM_AUTH	0x1
#define DRM_MASTER	0x2
#define DRM_ROOT_ONLY	0x4
typedef struct drm_ioctl_desc {
	int		     (*func)(DRM_IOCTL_ARGS);
	int flags;
} drm_ioctl_desc_t;

typedef struct drm_magic_entry {
	drm_magic_t	       magic;
	struct drm_file	       *priv;
	struct drm_magic_entry *next;
} drm_magic_entry_t;

typedef struct drm_magic_head {
	struct drm_magic_entry *head;
	struct drm_magic_entry *tail;
} drm_magic_head_t;

typedef struct drm_buf {
	int		  idx;	       /* Index into master buflist	     */
	int		  total;       /* Buffer size			     */
	int		  order;       /* log-base-2(total)		     */
	int		  used;	       /* Amount of buffer in use (for DMA)  */
	unsigned long	  offset;      /* Byte offset (used internally)	     */
	void		  *address;    /* Address of buffer		     */
	unsigned long	  bus_address; /* Bus address of buffer		     */
	struct drm_buf	  *next;       /* Kernel-only: used for free list    */
	__volatile__ int  pending;     /* On hardware DMA queue		     */
	DRMFILE		  filp;	       /* Unique identifier of holding process */
	int		  context;     /* Kernel queue for this buffer	     */
	enum {
		DRM_LIST_NONE	 = 0,
		DRM_LIST_FREE	 = 1,
		DRM_LIST_WAIT	 = 2,
		DRM_LIST_PEND	 = 3,
		DRM_LIST_PRIO	 = 4,
		DRM_LIST_RECLAIM = 5
	}		  list;	       /* Which list we're on		     */

	int		  dev_priv_size; /* Size of buffer private stoarge   */
	void		  *dev_private;  /* Per-buffer private storage       */
} drm_buf_t;

typedef struct drm_freelist {
	int		  initialized; /* Freelist in use		   */
	atomic_t	  count;       /* Number of free buffers	   */
	drm_buf_t	  *next;       /* End pointer			   */

	int		  low_mark;    /* Low water mark		   */
	int		  high_mark;   /* High water mark		   */
} drm_freelist_t;

typedef struct drm_dma_handle {
	void *vaddr;
	bus_addr_t busaddr;
#if defined(__FreeBSD__)
	bus_dma_tag_t tag;
	bus_dmamap_t map;
#elif defined(__NetBSD__)
	bus_dma_segment_t seg;
#endif
} drm_dma_handle_t;

typedef struct drm_buf_entry {
	int		  buf_size;
	int		  buf_count;
	drm_buf_t	  *buflist;
	int		  seg_count;
	drm_dma_handle_t  **seglist;
	int		  page_order;

	drm_freelist_t	  freelist;
} drm_buf_entry_t;

typedef TAILQ_HEAD(drm_file_list, drm_file) drm_file_list_t;
struct drm_file {
	TAILQ_ENTRY(drm_file) link;
	int		  authenticated;
	int		  master;
	int		  minor;
	pid_t		  pid;
	uid_t		  uid;
	int		  refs;
	drm_magic_t	  magic;
	unsigned long	  ioctl_count;
	void		 *driver_priv;
};

typedef struct drm_lock_data {
	drm_hw_lock_t	  *hw_lock;	/* Hardware lock		   */
	DRMFILE		  filp;	        /* Unique identifier of holding process (NULL is kernel)*/
	int		  lock_queue;	/* Queue of blocked processes	   */
	unsigned long	  lock_time;	/* Time of last lock in jiffies	   */
} drm_lock_data_t;

/* This structure, in the drm_device_t, is always initialized while the device
 * is open.  dev->dma_lock protects the incrementing of dev->buf_use, which
 * when set marks that no further bufs may be allocated until device teardown
 * occurs (when the last open of the device has closed).  The high/low
 * watermarks of bufs are only touched by the X Server, and thus not
 * concurrently accessed, so no locking is needed.
 */
typedef struct drm_device_dma {
	drm_buf_entry_t	  bufs[DRM_MAX_ORDER+1];
	int		  buf_count;
	drm_buf_t	  **buflist;	/* Vector of pointers info bufs	   */
	int		  seg_count;
	int		  page_count;
	unsigned long	  *pagelist;
	unsigned long	  byte_count;
	enum {
		_DRM_DMA_USE_AGP = 0x01,
		_DRM_DMA_USE_SG  = 0x02
	} flags;
} drm_device_dma_t;

typedef struct drm_agp_mem {
	void               *handle;
	unsigned long      bound; /* address */
	int                pages;
	struct drm_agp_mem *prev;
	struct drm_agp_mem *next;
} drm_agp_mem_t;

typedef struct drm_agp_head {
	device_t	   agpdev;
	struct agp_info    info;
	const char         *chipset;
	drm_agp_mem_t      *memory;
	unsigned long      mode;
	int                enabled;
	int                acquired;
	unsigned long      base;
   	int 		   mtrr;
	int		   cant_use_aperture;
	unsigned long	   page_mask;
} drm_agp_head_t;

typedef struct drm_sg_mem {
	unsigned long   handle;
	void            *virtual;
	int             pages;
	dma_addr_t	*busaddr;
	drm_dma_handle_t *dmah;	/* Handle to PCI memory for ATI PCIGART table */
} drm_sg_mem_t;

typedef TAILQ_HEAD(drm_map_list, drm_local_map) drm_map_list_t;

typedef struct drm_local_map {
	unsigned long	offset;	 /* Physical address (0 for SAREA)*/
	unsigned long	size;	 /* Physical size (bytes)	    */
	drm_map_type_t	type;	 /* Type of memory mapped		    */
	drm_map_flags_t flags;	 /* Flags				    */
	void		*handle; /* User-space: "Handle" to pass to mmap    */
				 /* Kernel-space: kernel-virtual address    */
	int		mtrr;	 /* Boolean: MTRR used */
				 /* Private data			    */
	int		rid;	 /* PCI resource ID for bus_space */
	struct resource *bsr;
	bus_space_tag_t bst;
	bus_space_handle_t bsh;
	drm_dma_handle_t *dmah;
	TAILQ_ENTRY(drm_local_map) link;
} drm_local_map_t;

TAILQ_HEAD(drm_vbl_sig_list, drm_vbl_sig);
typedef struct drm_vbl_sig {
	TAILQ_ENTRY(drm_vbl_sig) link;
	unsigned int	sequence;
	int		signo;
	int		pid;
} drm_vbl_sig_t;

/* location of GART table */
#define DRM_ATI_GART_MAIN 1
#define DRM_ATI_GART_FB   2

typedef struct ati_pcigart_info {
	int gart_table_location;
	int is_pcie;
	void *addr;
	dma_addr_t bus_addr;
	drm_local_map_t mapping;
} drm_ati_pcigart_info;

struct drm_driver_info {
	int	(*load)(struct drm_device *, unsigned long flags);
	int	(*firstopen)(struct drm_device *);
	int	(*open)(struct drm_device *, drm_file_t *);
	void	(*preclose)(struct drm_device *, void *filp);
	void	(*postclose)(struct drm_device *, drm_file_t *);
	void	(*lastclose)(struct drm_device *);
	int	(*unload)(struct drm_device *);
	void	(*reclaim_buffers_locked)(struct drm_device *, void *filp);
	int	(*dma_ioctl)(DRM_IOCTL_ARGS);
	void	(*dma_ready)(struct drm_device *);
	int	(*dma_quiescent)(struct drm_device *);
	int	(*dma_flush_block_and_flush)(struct drm_device *, int context,
					     drm_lock_flags_t flags);
	int	(*dma_flush_unblock)(struct drm_device *, int context,
				     drm_lock_flags_t flags);
	int	(*context_ctor)(struct drm_device *dev, int context);
	int	(*context_dtor)(struct drm_device *dev, int context);
	int	(*kernel_context_switch)(struct drm_device *dev, int old,
					 int new);
	int	(*kernel_context_switch_unlock)(struct drm_device *dev);
	void	(*irq_preinstall)(drm_device_t *dev);
	void	(*irq_postinstall)(drm_device_t *dev);
	void	(*irq_uninstall)(drm_device_t *dev);
	void	(*irq_handler)(DRM_IRQ_ARGS);
	int	(*vblank_wait)(drm_device_t *dev, unsigned int *sequence);

	drm_pci_id_list_t *id_entry;	/* PCI ID, name, and chipset private */

	/**
	 * Called by \c drm_device_is_agp.  Typically used to determine if a
	 * card is really attached to AGP or not.
	 *
	 * \param dev  DRM device handle
	 *
	 * \returns 
	 * One of three values is returned depending on whether or not the
	 * card is absolutely \b not AGP (return of 0), absolutely \b is AGP
	 * (return of 1), or may or may not be AGP (return of 2).
	 */
	int	(*device_is_agp) (struct drm_device * dev);

	drm_ioctl_desc_t *ioctls;
	int	max_ioctl;

	int	buf_priv_size;

	int	major;
	int	minor;
	int	patchlevel;
	const char *name;		/* Simple driver name		   */
	const char *desc;		/* Longer driver name		   */
	const char *date;		/* Date of last major changes.	   */

	unsigned use_agp :1;
	unsigned require_agp :1;
	unsigned use_sg :1;
	unsigned use_dma :1;
	unsigned use_pci_dma :1;
	unsigned use_dma_queue :1;
	unsigned use_irq :1;
	unsigned use_vbl_irq :1;
	unsigned use_mtrr :1;
};

/* Length for the array of resource pointers for drm_get_resource_*. */
#define DRM_MAX_PCI_RESOURCE	3

/** 
 * DRM device functions structure
 */
struct drm_device {
#if defined(__NetBSD__) || defined(__OpenBSD__)
	struct device	  device; /* softc is an extension of struct device */
#endif

	struct drm_driver_info driver;
	drm_pci_id_list_t *id_entry;	/* PCI ID, name, and chipset private */

	char		  *unique;	/* Unique identifier: e.g., busid  */
	int		  unique_len;	/* Length of unique field	   */
#ifdef __FreeBSD__
	device_t	  device;	/* Device instance from newbus     */
#endif
	struct cdev	  *devnode;	/* Device number for mknod	   */
	int		  if_version;	/* Highest interface version set */

	int		  flags;	/* Flags to open(2)		   */

				/* Locks */
#if defined(__FreeBSD__) && __FreeBSD_version > 500000
	struct mtx	  dma_lock;	/* protects dev->dma */
	struct mtx	  irq_lock;	/* protects irq condition checks */
	struct mtx	  dev_lock;	/* protects everything else */
#endif
				/* Usage Counters */
	int		  open_count;	/* Outstanding files open	   */
	int		  buf_use;	/* Buffers in use -- cannot alloc  */

				/* Performance counters */
	unsigned long     counters;
	drm_stat_type_t   types[15];
	atomic_t          counts[15];

				/* Authentication */
	drm_file_list_t   files;
	drm_magic_head_t  magiclist[DRM_HASH_SIZE];

	/* Linked list of mappable regions. Protected by dev_lock */
	drm_map_list_t	  maplist;

	drm_local_map_t	  **context_sareas;
	int		  max_context;

	drm_lock_data_t	  lock;		/* Information on hardware lock	   */

				/* DMA queues (contexts) */
	drm_device_dma_t  *dma;		/* Optional pointer for DMA support */

				/* Context support */
	int		  irq;		/* Interrupt used by board	   */
	int		  irq_enabled;	/* True if the irq handler is enabled */
#ifdef __FreeBSD__
	int		  irqrid;	/* Interrupt used by board */
	struct resource   *irqr;	/* Resource for interrupt used by board	   */
#elif defined(__NetBSD__) || defined(__OpenBSD__)
	struct pci_attach_args  pa;
#endif
	void		  *irqh;	/* Handle from bus_setup_intr      */

	/* Storage of resource pointers for drm_get_resource_* */
	struct resource   *pcir[DRM_MAX_PCI_RESOURCE];
	int		  pcirid[DRM_MAX_PCI_RESOURCE];

	int		  pci_domain;
	int		  pci_bus;
	int		  pci_slot;
	int		  pci_func;

	atomic_t	  context_flag;	/* Context swapping flag	   */
	int		  last_context;	/* Last current context		   */
   	int		  vbl_queue;	/* vbl wait channel */
   	atomic_t          vbl_received;

#ifdef __FreeBSD__
	struct sigio      *buf_sigio;	/* Processes waiting for SIGIO     */
#elif defined(__NetBSD__)
	pid_t		  buf_pgid;
#endif

				/* Sysctl support */
	struct drm_sysctl_info *sysctl;

	drm_agp_head_t    *agp;
	drm_sg_mem_t      *sg;  /* Scatter gather memory */
	atomic_t          *ctx_bitmap;
	void		  *dev_private;
	unsigned int	  agp_buffer_token;
	drm_local_map_t   *agp_buffer_map;
};

extern int	drm_debug_flag;

/* Device setup support (drm_drv.c) */
#ifdef __FreeBSD__
int	drm_probe(device_t nbdev, drm_pci_id_list_t *idlist);
int	drm_attach(device_t nbdev, drm_pci_id_list_t *idlist);
int	drm_detach(device_t nbdev);
d_ioctl_t drm_ioctl;
d_open_t drm_open;
d_close_t drm_close;
d_read_t drm_read;
d_poll_t drm_poll;
d_mmap_t drm_mmap;
#elif defined(__NetBSD__) || defined(__OpenBSD__)
int	drm_probe(struct pci_attach_args *pa, drm_pci_id_list_t *idlist);
int	drm_attach(struct pci_attach_args *pa, dev_t kdev, drm_pci_id_list_t *idlist);
dev_type_ioctl(drm_ioctl);
dev_type_open(drm_open);
dev_type_close(drm_close);
dev_type_read(drm_read);
dev_type_poll(drm_poll);
dev_type_mmap(drm_mmap);
#endif

/* File operations helpers (drm_fops.c) */
#ifdef __FreeBSD__
extern int		drm_open_helper(struct cdev *kdev, int flags, int fmt, 
					 DRM_STRUCTPROC *p, drm_device_t *dev);
extern drm_file_t	*drm_find_file_by_proc(drm_device_t *dev, 
					 DRM_STRUCTPROC *p);
#elif defined(__NetBSD__) || defined(__OpenBSD__)
extern int		drm_open_helper(dev_t kdev, int flags, int fmt, 
					DRM_STRUCTPROC *p, drm_device_t *dev);
extern drm_file_t	*drm_find_file_by_proc(drm_device_t *dev, 
					       DRM_STRUCTPROC *p);
#endif /* __NetBSD__ || __OpenBSD__ */

/* Memory management support (drm_memory.c) */
void	drm_mem_init(void);
void	drm_mem_uninit(void);
void	*drm_alloc(size_t size, int area);
void	*drm_calloc(size_t nmemb, size_t size, int area);
void	*drm_realloc(void *oldpt, size_t oldsize, size_t size,
				   int area);
void	drm_free(void *pt, size_t size, int area);
void	*drm_ioremap(drm_device_t *dev, drm_local_map_t *map);
void	drm_ioremapfree(drm_local_map_t *map);
int	drm_mtrr_add(unsigned long offset, size_t size, int flags);
int	drm_mtrr_del(unsigned long offset, size_t size, int flags);

int	drm_context_switch(drm_device_t *dev, int old, int new);
int	drm_context_switch_complete(drm_device_t *dev, int new);

int	drm_ctxbitmap_init(drm_device_t *dev);
void	drm_ctxbitmap_cleanup(drm_device_t *dev);
void	drm_ctxbitmap_free(drm_device_t *dev, int ctx_handle);
int	drm_ctxbitmap_next(drm_device_t *dev);

/* Locking IOCTL support (drm_lock.c) */
int	drm_lock_take(__volatile__ unsigned int *lock,
				    unsigned int context);
int	drm_lock_transfer(drm_device_t *dev,
					__volatile__ unsigned int *lock,
					unsigned int context);
int	drm_lock_free(drm_device_t *dev,
				    __volatile__ unsigned int *lock,
				    unsigned int context);

/* Buffer management support (drm_bufs.c) */
unsigned long drm_get_resource_start(drm_device_t *dev, unsigned int resource);
unsigned long drm_get_resource_len(drm_device_t *dev, unsigned int resource);
void	drm_rmmap(drm_device_t *dev, drm_local_map_t *map);
int	drm_order(unsigned long size);
int	drm_addmap(drm_device_t * dev, unsigned long offset, unsigned long size,
		   drm_map_type_t type, drm_map_flags_t flags,
		   drm_local_map_t **map_ptr);
int	drm_addbufs_pci(drm_device_t *dev, drm_buf_desc_t *request);
int	drm_addbufs_sg(drm_device_t *dev, drm_buf_desc_t *request);
int	drm_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request);

/* DMA support (drm_dma.c) */
int	drm_dma_setup(drm_device_t *dev);
void	drm_dma_takedown(drm_device_t *dev);
void	drm_free_buffer(drm_device_t *dev, drm_buf_t *buf);
void	drm_reclaim_buffers(drm_device_t *dev, DRMFILE filp);

/* IRQ support (drm_irq.c) */
int	drm_irq_install(drm_device_t *dev);
int	drm_irq_uninstall(drm_device_t *dev);
irqreturn_t drm_irq_handler(DRM_IRQ_ARGS);
void	drm_driver_irq_preinstall(drm_device_t *dev);
void	drm_driver_irq_postinstall(drm_device_t *dev);
void	drm_driver_irq_uninstall(drm_device_t *dev);
int	drm_vblank_wait(drm_device_t *dev, unsigned int *vbl_seq);
void	drm_vbl_send_signals(drm_device_t *dev);

/* AGP/PCI Express/GART support (drm_agpsupport.c) */
int	drm_device_is_agp(drm_device_t *dev);
int	drm_device_is_pcie(drm_device_t *dev);
drm_agp_head_t *drm_agp_init(void);
int	drm_agp_acquire(drm_device_t *dev);
int	drm_agp_release(drm_device_t *dev);
int	drm_agp_info(drm_device_t * dev, drm_agp_info_t *info);
int	drm_agp_enable(drm_device_t *dev, drm_agp_mode_t mode);
void	*drm_agp_allocate_memory(size_t pages, u32 type);
int	drm_agp_free_memory(void *handle);
int	drm_agp_bind_memory(void *handle, off_t start);
int	drm_agp_unbind_memory(void *handle);
int	drm_agp_alloc(drm_device_t *dev, drm_agp_buffer_t *request);
int	drm_agp_free(drm_device_t *dev, drm_agp_buffer_t *request);
int	drm_agp_bind(drm_device_t *dev, drm_agp_binding_t *request);
int	drm_agp_unbind(drm_device_t *dev, drm_agp_binding_t *request);

/* Scatter Gather Support (drm_scatter.c) */
void	drm_sg_cleanup(drm_sg_mem_t *entry);

#ifdef __FreeBSD__
/* sysctl support (drm_sysctl.h) */
extern int		drm_sysctl_init(drm_device_t *dev);
extern int		drm_sysctl_cleanup(drm_device_t *dev);
#endif /* __FreeBSD__ */

/* ATI PCIGART support (ati_pcigart.c) */
int	drm_ati_pcigart_init(drm_device_t *dev,
			     drm_ati_pcigart_info *gart_info);
int	drm_ati_pcigart_cleanup(drm_device_t *dev,
				drm_ati_pcigart_info *gart_info);

/* Locking IOCTL support (drm_drv.c) */
int	drm_lock(DRM_IOCTL_ARGS);
int	drm_unlock(DRM_IOCTL_ARGS);
int	drm_version(DRM_IOCTL_ARGS);
int	drm_setversion(DRM_IOCTL_ARGS);

/* Misc. IOCTL support (drm_ioctl.c) */
int	drm_irq_by_busid(DRM_IOCTL_ARGS);
int	drm_getunique(DRM_IOCTL_ARGS);
int	drm_setunique(DRM_IOCTL_ARGS);
int	drm_getmap(DRM_IOCTL_ARGS);
int	drm_getclient(DRM_IOCTL_ARGS);
int	drm_getstats(DRM_IOCTL_ARGS);
int	drm_noop(DRM_IOCTL_ARGS);

/* Context IOCTL support (drm_context.c) */
int	drm_resctx(DRM_IOCTL_ARGS);
int	drm_addctx(DRM_IOCTL_ARGS);
int	drm_modctx(DRM_IOCTL_ARGS);
int	drm_getctx(DRM_IOCTL_ARGS);
int	drm_switchctx(DRM_IOCTL_ARGS);
int	drm_newctx(DRM_IOCTL_ARGS);
int	drm_rmctx(DRM_IOCTL_ARGS);
int	drm_setsareactx(DRM_IOCTL_ARGS);
int	drm_getsareactx(DRM_IOCTL_ARGS);

/* Drawable IOCTL support (drm_drawable.c) */
int	drm_adddraw(DRM_IOCTL_ARGS);
int	drm_rmdraw(DRM_IOCTL_ARGS);

/* Authentication IOCTL support (drm_auth.c) */
int	drm_getmagic(DRM_IOCTL_ARGS);
int	drm_authmagic(DRM_IOCTL_ARGS);

/* Buffer management support (drm_bufs.c) */
int	drm_addmap_ioctl(DRM_IOCTL_ARGS);
int	drm_rmmap_ioctl(DRM_IOCTL_ARGS);
int	drm_addbufs_ioctl(DRM_IOCTL_ARGS);
int	drm_infobufs(DRM_IOCTL_ARGS);
int	drm_markbufs(DRM_IOCTL_ARGS);
int	drm_freebufs(DRM_IOCTL_ARGS);
int	drm_mapbufs(DRM_IOCTL_ARGS);

/* DMA support (drm_dma.c) */
int	drm_dma(DRM_IOCTL_ARGS);

/* IRQ support (drm_irq.c) */
int	drm_control(DRM_IOCTL_ARGS);
int	drm_wait_vblank(DRM_IOCTL_ARGS);

/* AGP/GART support (drm_agpsupport.c) */
int	drm_agp_acquire_ioctl(DRM_IOCTL_ARGS);
int	drm_agp_release_ioctl(DRM_IOCTL_ARGS);
int	drm_agp_enable_ioctl(DRM_IOCTL_ARGS);
int	drm_agp_info_ioctl(DRM_IOCTL_ARGS);
int	drm_agp_alloc_ioctl(DRM_IOCTL_ARGS);
int	drm_agp_free_ioctl(DRM_IOCTL_ARGS);
int	drm_agp_unbind_ioctl(DRM_IOCTL_ARGS);
int	drm_agp_bind_ioctl(DRM_IOCTL_ARGS);

/* Scatter Gather Support (drm_scatter.c) */
int	drm_sg_alloc(DRM_IOCTL_ARGS);
int	drm_sg_free(DRM_IOCTL_ARGS);

/* consistent PCI memory functions (drm_pci.c) */
drm_dma_handle_t *drm_pci_alloc(drm_device_t *dev, size_t size, size_t align,
				dma_addr_t maxaddr);
void	drm_pci_free(drm_device_t *dev, drm_dma_handle_t *dmah);

/* Inline replacements for DRM_IOREMAP macros */
static __inline__ void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev)
{
	map->handle = drm_ioremap(dev, map);
}
static __inline__ void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev)
{
	if ( map->handle && map->size )
		drm_ioremapfree(map);
}

static __inline__ struct drm_local_map *drm_core_findmap(struct drm_device *dev, unsigned long offset)
{
	drm_local_map_t *map;

	DRM_SPINLOCK_ASSERT(&dev->dev_lock);
	TAILQ_FOREACH(map, &dev->maplist, link) {
		if (map->offset == offset)
			return map;
	}
	return NULL;
}

static __inline__ void drm_core_dropmap(struct drm_map *map)
{
}

#endif /* __KERNEL__ */
#endif /* _DRM_P_H_ */