summaryrefslogtreecommitdiff
path: root/bsd-core/drmP.h
blob: eec3faed4a55fbe508a065a686bb1803bed971bc (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
/* 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__)

/* DRM template customization defaults
 */
#ifndef __HAVE_AGP
#define __HAVE_AGP		0
#endif
#ifndef __HAVE_MTRR
#define __HAVE_MTRR		0
#endif
#ifndef __HAVE_CTX_BITMAP
#define __HAVE_CTX_BITMAP	0
#endif
#ifndef __HAVE_DMA
#define __HAVE_DMA		0
#endif
#ifndef __HAVE_IRQ
#define __HAVE_IRQ		0
#endif

#define DRM_DEBUG_CODE 0	  /* Include debugging code (if > 1, then
				     also include looping detection. */

typedef struct drm_device drm_device_t;
typedef struct drm_file drm_file_t;

/* There's undoubtably more of this file to go into these OS dependent ones. */

#ifdef __FreeBSD__
#include "drm_os_freebsd.h"
#elif defined __NetBSD__
#include "drm_os_netbsd.h"
#endif

#include "drm.h"

/* Begin the DRM... */

#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_FLAG_DEBUG	  0x01

#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)

				/* Mapping helper macros */
#define DRM_IOREMAP(map, dev)						\
	(map)->handle = DRM(ioremap)( dev, map )

#define DRM_IOREMAP_NOCACHE(map, dev)					\
	(map)->handle = DRM(ioremap_nocache)( dev, map )

#define DRM_IOREMAPFREE(map, dev)						\
	do {								\
		if ( (map)->handle && (map)->size )			\
			DRM(ioremapfree)( map );			\
	} while (0)

				/* 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_GET_PRIV_SAREA(_dev, _ctx, _map) do {	\
	(_map) = (_dev)->context_sareas[_ctx];		\
} while(0)


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

typedef struct drm_ioctl_desc {
	int		     (*func)(DRM_IOCTL_ARGS);
	int		     auth_needed;
	int		     root_only;
} 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_buf_entry {
	int		  buf_size;
	int		  buf_count;
	drm_buf_t	  *buflist;
	int		  seg_count;
	int		  page_order;
	vm_offset_t	  *seglist;
	dma_addr_t	  *seglist_bus;

	drm_freelist_t	  freelist;
} drm_buf_entry_t;

typedef struct drm_hw_lock {
	__volatile__ unsigned int lock;
	char			  padding[60]; /* Pad to cache line */
} drm_hw_lock_t;

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

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;

				/* DMA support */
	drm_buf_t	  *this_buffer;	/* Buffer being sent		   */
	drm_buf_t	  *next_buffer; /* Selected buffer to send	   */
} drm_device_dma_t;

#if __REALLY_HAVE_AGP
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 		   agp_mtrr;
	int		   cant_use_aperture;
	unsigned long	   page_mask;
} drm_agp_head_t;
#endif

typedef struct drm_sg_mem {
	unsigned long   handle;
	void            *virtual;
	int             pages;
	dma_addr_t	*busaddr;
} drm_sg_mem_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;	 /* MTRR slot used			    */
				 /* Private data			    */
	bus_space_tag_t iot;
	bus_space_handle_t ioh;
} drm_local_map_t;

typedef TAILQ_HEAD(drm_map_list, drm_map_list_entry) drm_map_list_t;
typedef struct drm_map_list_entry {
	TAILQ_ENTRY(drm_map_list_entry) link;
	drm_local_map_t	*map;
} drm_map_list_entry_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;

struct drm_device {
#ifdef __NetBSD__
	struct device	  device;	/* NetBSD's softc is an extension of struct device */
#endif
	const char	  *name;	/* Simple driver name		   */
	char		  *unique;	/* Unique identifier: e.g., busid  */
	int		  unique_len;	/* Length of unique field	   */
#ifdef __FreeBSD__
	device_t	  device;	/* Device instance from newbus     */
#endif
	dev_t		  devnode;	/* Device number for mknod	   */

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

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

				/* 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		  irqrid;		/* Interrupt used by board	   */
#ifdef __FreeBSD__
	struct resource   *irqr;	/* Resource for interrupt used by board	   */
#elif defined(__NetBSD__)
	struct pci_attach_args  pa;
	pci_intr_handle_t	ih;
#endif
	void		  *irqh;	/* Handle from bus_setup_intr      */
	atomic_t	  context_flag;	/* Context swapping flag	   */
	int		  last_context;	/* Last current context		   */
#if __FreeBSD_version >= 400005
	struct task       task;
#endif
#if __HAVE_VBL_IRQ
   	int		  vbl_queue;	/* vbl wait channel */
   	atomic_t          vbl_received;
#endif

#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;

#if __REALLY_HAVE_AGP
	drm_agp_head_t    *agp;
#endif
	drm_sg_mem_t      *sg;  /* Scatter gather memory */
	atomic_t          *ctx_bitmap;
	void		  *dev_private;
};

extern int	     DRM(flags);

				/* Memory management support (drm_memory.h) */
extern void	     DRM(mem_init)(void);
extern void	     DRM(mem_uninit)(void);
extern void	     *DRM(alloc)(size_t size, int area);
extern void	     *DRM(calloc)(size_t nmemb, size_t size, int area);
extern void	     *DRM(realloc)(void *oldpt, size_t oldsize, size_t size,
				   int area);
extern void	     DRM(free)(void *pt, size_t size, int area);
extern void	     *DRM(ioremap)(drm_device_t *dev, drm_local_map_t *map);
extern void	     DRM(ioremapfree)(drm_local_map_t *map);
extern int	 DRM(mtrr_add)(unsigned long offset, size_t size, int flags);
extern int	 DRM(mtrr_del)(unsigned long offset, size_t size, int flags);

#if __REALLY_HAVE_AGP
extern agp_memory    *DRM(alloc_agp)(int pages, u32 type);
extern int           DRM(free_agp)(agp_memory *handle, int pages);
extern int           DRM(bind_agp)(agp_memory *handle, unsigned int start);
extern int           DRM(unbind_agp)(agp_memory *handle);
#endif

extern int	     DRM(context_switch)(drm_device_t *dev, int old, int new);
extern int	     DRM(context_switch_complete)(drm_device_t *dev, int new);

#if __HAVE_CTX_BITMAP
extern int	     DRM(ctxbitmap_init)( drm_device_t *dev );
extern void	     DRM(ctxbitmap_cleanup)( drm_device_t *dev );
extern void          DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle );
extern int           DRM(ctxbitmap_next)( drm_device_t *dev );
#endif

				/* Locking IOCTL support (drm_lock.h) */
extern int	     DRM(lock_take)(__volatile__ unsigned int *lock,
				    unsigned int context);
extern int	     DRM(lock_transfer)(drm_device_t *dev,
					__volatile__ unsigned int *lock,
					unsigned int context);
extern int	     DRM(lock_free)(drm_device_t *dev,
				    __volatile__ unsigned int *lock,
				    unsigned int context);

				/* Buffer management support (drm_bufs.h) */
extern int	     DRM(order)( unsigned long size );

#if __HAVE_DMA
				/* DMA support (drm_dma.h) */
extern int	     DRM(dma_setup)(drm_device_t *dev);
extern void	     DRM(dma_takedown)(drm_device_t *dev);
extern void	     DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf);
extern void	     DRM(reclaim_buffers)(drm_device_t *dev, DRMFILE filp);
#endif

#if __HAVE_IRQ
				/* IRQ support (drm_irq.h) */
extern int           DRM(irq_install)( drm_device_t *dev, int irq );
extern int           DRM(irq_uninstall)( drm_device_t *dev );
extern irqreturn_t   DRM(irq_handler)( DRM_IRQ_ARGS );
extern void          DRM(driver_irq_preinstall)( drm_device_t *dev );
extern void          DRM(driver_irq_postinstall)( drm_device_t *dev );
extern void          DRM(driver_irq_uninstall)( drm_device_t *dev );
#if __HAVE_IRQ_BH
extern void          DRM(irq_immediate_bh)( DRM_TASKQUEUE_ARGS );
#endif
#endif

#if __HAVE_VBL_IRQ
extern int           DRM(vblank_wait)(drm_device_t *dev, unsigned int *vbl_seq);
extern void          DRM(vbl_send_signals)( drm_device_t *dev );
#endif

#if __REALLY_HAVE_AGP
				/* AGP/GART support (drm_agpsupport.h) */
extern drm_agp_head_t *DRM(agp_init)(void);
extern void           DRM(agp_uninit)(void);
extern void           DRM(agp_do_release)(void);
extern agp_memory     *DRM(agp_allocate_memory)(size_t pages, u32 type);
extern int            DRM(agp_free_memory)(agp_memory *handle);
extern int            DRM(agp_bind_memory)(agp_memory *handle, off_t start);
extern int            DRM(agp_unbind_memory)(agp_memory *handle);
#endif

#if __HAVE_SG
				/* Scatter Gather Support (drm_scatter.h) */
extern void           DRM(sg_cleanup)(drm_sg_mem_t *entry);
#endif

#if __REALLY_HAVE_SG
                               /* ATI PCIGART support (ati_pcigart.h) */
extern int            DRM(ati_pcigart_init)(drm_device_t *dev,
					    unsigned long *addr,
					    dma_addr_t *bus_addr);
extern int            DRM(ati_pcigart_cleanup)(drm_device_t *dev,
					       unsigned long addr,
					       dma_addr_t bus_addr);
#endif

/* Locking IOCTL support (drm_drv.h) */
extern int		DRM(lock)(DRM_IOCTL_ARGS);
extern int		DRM(unlock)(DRM_IOCTL_ARGS);
extern int		DRM(version)( DRM_IOCTL_ARGS );
extern int		DRM(setversion)( DRM_IOCTL_ARGS );

/* Misc. IOCTL support (drm_ioctl.h) */
extern int		DRM(irq_busid)(DRM_IOCTL_ARGS);
extern int		DRM(getunique)(DRM_IOCTL_ARGS);
extern int		DRM(setunique)(DRM_IOCTL_ARGS);
extern int		DRM(getmap)(DRM_IOCTL_ARGS);
extern int		DRM(getclient)(DRM_IOCTL_ARGS);
extern int		DRM(getstats)(DRM_IOCTL_ARGS);
extern int		DRM(noop)(DRM_IOCTL_ARGS);

/* Context IOCTL support (drm_context.h) */
extern int		DRM(resctx)(DRM_IOCTL_ARGS);
extern int		DRM(addctx)(DRM_IOCTL_ARGS);
extern int		DRM(modctx)(DRM_IOCTL_ARGS);
extern int		DRM(getctx)(DRM_IOCTL_ARGS);
extern int		DRM(switchctx)(DRM_IOCTL_ARGS);
extern int		DRM(newctx)(DRM_IOCTL_ARGS);
extern int		DRM(rmctx)(DRM_IOCTL_ARGS);
extern int		DRM(setsareactx)(DRM_IOCTL_ARGS);
extern int		DRM(getsareactx)(DRM_IOCTL_ARGS);

/* Drawable IOCTL support (drm_drawable.h) */
extern int		DRM(adddraw)(DRM_IOCTL_ARGS);
extern int		DRM(rmdraw)(DRM_IOCTL_ARGS);

/* Authentication IOCTL support (drm_auth.h) */
extern int		DRM(getmagic)(DRM_IOCTL_ARGS);
extern int		DRM(authmagic)(DRM_IOCTL_ARGS);

/* Buffer management support (drm_bufs.h) */
extern int		DRM(addmap)(DRM_IOCTL_ARGS);
extern int		DRM(rmmap)(DRM_IOCTL_ARGS);
#if __HAVE_DMA
extern int		DRM(addbufs)(DRM_IOCTL_ARGS);
extern int		DRM(infobufs)(DRM_IOCTL_ARGS);
extern int		DRM(markbufs)(DRM_IOCTL_ARGS);
extern int		DRM(freebufs)(DRM_IOCTL_ARGS);
extern int		DRM(mapbufs)(DRM_IOCTL_ARGS);
#endif

/* IRQ support (drm_irq.h) */
#if __HAVE_IRQ || __HAVE_DMA
extern int		DRM(control)(DRM_IOCTL_ARGS);
#endif
#if __HAVE_VBL_IRQ
extern int		DRM(wait_vblank)(DRM_IOCTL_ARGS);
#endif

/* AGP/GART support (drm_agpsupport.h) */
#if __REALLY_HAVE_AGP
extern int		DRM(agp_acquire)(DRM_IOCTL_ARGS);
extern int		DRM(agp_release)(DRM_IOCTL_ARGS);
extern int		DRM(agp_enable)(DRM_IOCTL_ARGS);
extern int		DRM(agp_info)(DRM_IOCTL_ARGS);
extern int		DRM(agp_alloc)(DRM_IOCTL_ARGS);
extern int		DRM(agp_free)(DRM_IOCTL_ARGS);
extern int		DRM(agp_unbind)(DRM_IOCTL_ARGS);
extern int		DRM(agp_bind)(DRM_IOCTL_ARGS);
#endif

/* Scatter Gather Support (drm_scatter.h) */
#if __HAVE_SG
extern int		DRM(sg_alloc)(DRM_IOCTL_ARGS);
extern int		DRM(sg_free)(DRM_IOCTL_ARGS);
#endif

/* consistent PCI memory functions (drm_pci.h) */
extern void		*DRM(pci_alloc)(drm_device_t *dev, size_t size, 
					size_t align, dma_addr_t maxaddr,
					dma_addr_t *busaddr);
extern void		DRM(pci_free)(drm_device_t *dev, size_t size, 
				      void *vaddr, dma_addr_t busaddr);

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