drmP.h revision 112015 
1/* drmP.h -- Private header for Direct Rendering Manager -*- linux-c -*-
2 * Created: Mon Jan  4 10:05:05 1999 by faith@precisioninsight.com
3 *
4 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
5 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6 * All rights reserved.
7 *
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
17 * Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
22 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
23 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
24 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
25 * OTHER DEALINGS IN THE SOFTWARE.
26 *
27 * Authors:
28 *    Rickard E. (Rik) Faith <faith@valinux.com>
29 *    Gareth Hughes <gareth@valinux.com>
30 * $FreeBSD: head/sys/dev/drm/drmP.h 112015 2003-03-09 02:08:30Z anholt $
31 */
32
33#ifndef _DRM_P_H_
34#define _DRM_P_H_
35
36#if defined(_KERNEL) || defined(__KERNEL__)
37
38/* DRM template customization defaults
39 */
40#ifndef __HAVE_AGP
41#define __HAVE_AGP		0
42#endif
43#ifndef __HAVE_MTRR
44#define __HAVE_MTRR		0
45#endif
46#ifndef __HAVE_CTX_BITMAP
47#define __HAVE_CTX_BITMAP	0
48#endif
49#ifndef __HAVE_DMA
50#define __HAVE_DMA		0
51#endif
52#ifndef __HAVE_DMA_IRQ
53#define __HAVE_DMA_IRQ		0
54#endif
55#ifndef __HAVE_DMA_WAITLIST
56#define __HAVE_DMA_WAITLIST	0
57#endif
58#ifndef __HAVE_DMA_FREELIST
59#define __HAVE_DMA_FREELIST	0
60#endif
61#ifndef __HAVE_DMA_HISTOGRAM
62#define __HAVE_DMA_HISTOGRAM	0
63#endif
64
65#define DRM_DEBUG_CODE 0	  /* Include debugging code (if > 1, then
66				     also include looping detection. */
67
68typedef struct drm_device drm_device_t;
69typedef struct drm_file drm_file_t;
70
71/* There's undoubtably more of this file to go into these OS dependent ones. */
72
73#ifdef __FreeBSD__
74#include "dev/drm/drm_os_freebsd.h"
75#elif defined __NetBSD__
76#include "dev/drm/drm_os_netbsd.h"
77#endif
78
79#include "dev/drm/drm.h"
80
81/* Begin the DRM... */
82
83#define DRM_HASH_SIZE	      16 /* Size of key hash table		  */
84#define DRM_KERNEL_CONTEXT    0	 /* Change drm_resctx if changed	  */
85#define DRM_RESERVED_CONTEXTS 1	 /* Change drm_resctx if changed	  */
86#define DRM_LOOPING_LIMIT     5000000
87#define DRM_BSZ		      1024 /* Buffer size for /dev/drm? output	  */
88#define DRM_LOCK_SLICE	      1	/* Time slice for lock, in jiffies	  */
89
90#define DRM_FLAG_DEBUG	  0x01
91#define DRM_FLAG_NOCTX	  0x02
92
93#define DRM_MEM_DMA	   0
94#define DRM_MEM_SAREA	   1
95#define DRM_MEM_DRIVER	   2
96#define DRM_MEM_MAGIC	   3
97#define DRM_MEM_IOCTLS	   4
98#define DRM_MEM_MAPS	   5
99#define DRM_MEM_VMAS	   6
100#define DRM_MEM_BUFS	   7
101#define DRM_MEM_SEGS	   8
102#define DRM_MEM_PAGES	   9
103#define DRM_MEM_FILES	  10
104#define DRM_MEM_QUEUES	  11
105#define DRM_MEM_CMDS	  12
106#define DRM_MEM_MAPPINGS  13
107#define DRM_MEM_BUFLISTS  14
108#define DRM_MEM_AGPLISTS  15
109#define DRM_MEM_TOTALAGP  16
110#define DRM_MEM_BOUNDAGP  17
111#define DRM_MEM_CTXBITMAP 18
112#define DRM_MEM_STUB      19
113#define DRM_MEM_SGLISTS   20
114
115#define DRM_MAX_CTXBITMAP (PAGE_SIZE * 8)
116
117				/* Backward compatibility section */
118				/* _PAGE_WT changed to _PAGE_PWT in 2.2.6 */
119#ifndef _PAGE_PWT
120#define _PAGE_PWT _PAGE_WT
121#endif
122
123				/* Mapping helper macros */
124#define DRM_IOREMAP(map)						\
125	(map)->handle = DRM(ioremap)( dev, map )
126
127#define DRM_IOREMAP_NOCACHE(map)					\
128	(map)->handle = DRM(ioremap_nocache)( dev, map )
129
130#define DRM_IOREMAPFREE(map)						\
131	do {								\
132		if ( (map)->handle && (map)->size )			\
133			DRM(ioremapfree)( map );			\
134	} while (0)
135
136				/* Internal types and structures */
137#define DRM_ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
138#define DRM_MIN(a,b) ((a)<(b)?(a):(b))
139#define DRM_MAX(a,b) ((a)>(b)?(a):(b))
140
141#define DRM_LEFTCOUNT(x) (((x)->rp + (x)->count - (x)->wp) % ((x)->count + 1))
142#define DRM_BUFCOUNT(x) ((x)->count - DRM_LEFTCOUNT(x))
143#define DRM_WAITCOUNT(dev,idx) DRM_BUFCOUNT(&dev->queuelist[idx]->waitlist)
144
145#define DRM_GET_PRIV_SAREA(_dev, _ctx, _map) do {	\
146	(_map) = (_dev)->context_sareas[_ctx];		\
147} while(0)
148
149
150typedef struct drm_pci_list {
151	u16 vendor;
152	u16 device;
153} drm_pci_list_t;
154
155typedef struct drm_ioctl_desc {
156	d_ioctl_t            *func;
157	int		     auth_needed;
158	int		     root_only;
159} drm_ioctl_desc_t;
160
161typedef struct drm_devstate {
162	pid_t		  owner;	/* X server pid holding x_lock */
163
164} drm_devstate_t;
165
166typedef struct drm_magic_entry {
167	drm_magic_t	       magic;
168	struct drm_file	       *priv;
169	struct drm_magic_entry *next;
170} drm_magic_entry_t;
171
172typedef struct drm_magic_head {
173	struct drm_magic_entry *head;
174	struct drm_magic_entry *tail;
175} drm_magic_head_t;
176
177typedef struct drm_vma_entry {
178	struct vm_area_struct *vma;
179	struct drm_vma_entry  *next;
180	pid_t		      pid;
181} drm_vma_entry_t;
182
183typedef struct drm_buf {
184	int		  idx;	       /* Index into master buflist	     */
185	int		  total;       /* Buffer size			     */
186	int		  order;       /* log-base-2(total)		     */
187	int		  used;	       /* Amount of buffer in use (for DMA)  */
188	unsigned long	  offset;      /* Byte offset (used internally)	     */
189	void		  *address;    /* Address of buffer		     */
190	unsigned long	  bus_address; /* Bus address of buffer		     */
191	struct drm_buf	  *next;       /* Kernel-only: used for free list    */
192	__volatile__ int  waiting;     /* On kernel DMA queue		     */
193	__volatile__ int  pending;     /* On hardware DMA queue		     */
194	wait_queue_head_t dma_wait;    /* Processes waiting		     */
195	pid_t		  pid;	       /* PID of holding process	     */
196	int		  context;     /* Kernel queue for this buffer	     */
197	int		  while_locked;/* Dispatch this buffer while locked  */
198	enum {
199		DRM_LIST_NONE	 = 0,
200		DRM_LIST_FREE	 = 1,
201		DRM_LIST_WAIT	 = 2,
202		DRM_LIST_PEND	 = 3,
203		DRM_LIST_PRIO	 = 4,
204		DRM_LIST_RECLAIM = 5
205	}		  list;	       /* Which list we're on		     */
206
207#if DRM_DMA_HISTOGRAM
208	cycles_t	  time_queued;	   /* Queued to kernel DMA queue     */
209	cycles_t	  time_dispatched; /* Dispatched to hardware	     */
210	cycles_t	  time_completed;  /* Completed by hardware	     */
211	cycles_t	  time_freed;	   /* Back on freelist		     */
212#endif
213
214	int		  dev_priv_size; /* Size of buffer private stoarge   */
215	void		  *dev_private;  /* Per-buffer private storage       */
216} drm_buf_t;
217
218#if DRM_DMA_HISTOGRAM
219#define DRM_DMA_HISTOGRAM_SLOTS		  9
220#define DRM_DMA_HISTOGRAM_INITIAL	 10
221#define DRM_DMA_HISTOGRAM_NEXT(current)	 ((current)*10)
222typedef struct drm_histogram {
223	atomic_t	  total;
224
225	atomic_t	  queued_to_dispatched[DRM_DMA_HISTOGRAM_SLOTS];
226	atomic_t	  dispatched_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
227	atomic_t	  completed_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
228
229	atomic_t	  queued_to_completed[DRM_DMA_HISTOGRAM_SLOTS];
230	atomic_t	  queued_to_freed[DRM_DMA_HISTOGRAM_SLOTS];
231
232	atomic_t	  dma[DRM_DMA_HISTOGRAM_SLOTS];
233	atomic_t	  schedule[DRM_DMA_HISTOGRAM_SLOTS];
234	atomic_t	  ctx[DRM_DMA_HISTOGRAM_SLOTS];
235	atomic_t	  lacq[DRM_DMA_HISTOGRAM_SLOTS];
236	atomic_t	  lhld[DRM_DMA_HISTOGRAM_SLOTS];
237} drm_histogram_t;
238#endif
239
240				/* bufs is one longer than it has to be */
241typedef struct drm_waitlist {
242	int		  count;	/* Number of possible buffers	   */
243	drm_buf_t	  **bufs;	/* List of pointers to buffers	   */
244	drm_buf_t	  **rp;		/* Read pointer			   */
245	drm_buf_t	  **wp;		/* Write pointer		   */
246	drm_buf_t	  **end;	/* End pointer			   */
247	DRM_SPINTYPE	  read_lock;
248	DRM_SPINTYPE	  write_lock;
249} drm_waitlist_t;
250
251typedef struct drm_freelist {
252	int		  initialized; /* Freelist in use		   */
253	atomic_t	  count;       /* Number of free buffers	   */
254	drm_buf_t	  *next;       /* End pointer			   */
255
256	wait_queue_head_t waiting;     /* Processes waiting on free bufs   */
257	int		  low_mark;    /* Low water mark		   */
258	int		  high_mark;   /* High water mark		   */
259	atomic_t	  wfh;	       /* If waiting for high mark	   */
260	DRM_SPINTYPE   lock;
261} drm_freelist_t;
262
263typedef struct drm_buf_entry {
264	int		  buf_size;
265	int		  buf_count;
266	drm_buf_t	  *buflist;
267	int		  seg_count;
268	int		  page_order;
269	unsigned long	  *seglist;
270
271	drm_freelist_t	  freelist;
272} drm_buf_entry_t;
273
274typedef struct drm_hw_lock {
275	__volatile__ unsigned int lock;
276	char			  padding[60]; /* Pad to cache line */
277} drm_hw_lock_t;
278
279typedef TAILQ_HEAD(drm_file_list, drm_file) drm_file_list_t;
280struct drm_file {
281	TAILQ_ENTRY(drm_file) link;
282	int		  authenticated;
283	int		  minor;
284	pid_t		  pid;
285	uid_t		  uid;
286	int		  refs;
287	drm_magic_t	  magic;
288	unsigned long	  ioctl_count;
289	struct drm_device *devXX;
290};
291
292typedef struct drm_queue {
293	atomic_t	  use_count;	/* Outstanding uses (+1)	    */
294	atomic_t	  finalization;	/* Finalization in progress	    */
295	atomic_t	  block_count;	/* Count of processes waiting	    */
296	atomic_t	  block_read;	/* Queue blocked for reads	    */
297	wait_queue_head_t read_queue;	/* Processes waiting on block_read  */
298	atomic_t	  block_write;	/* Queue blocked for writes	    */
299	wait_queue_head_t write_queue;	/* Processes waiting on block_write */
300#if 1
301	atomic_t	  total_queued;	/* Total queued statistic	    */
302	atomic_t	  total_flushed;/* Total flushes statistic	    */
303	atomic_t	  total_locks;	/* Total locks statistics	    */
304#endif
305	drm_ctx_flags_t	  flags;	/* Context preserving and 2D-only   */
306	drm_waitlist_t	  waitlist;	/* Pending buffers		    */
307	wait_queue_head_t flush_queue;	/* Processes waiting until flush    */
308} drm_queue_t;
309
310typedef struct drm_lock_data {
311	drm_hw_lock_t	  *hw_lock;	/* Hardware lock		   */
312	pid_t		  pid;		/* PID of lock holder (0=kernel)   */
313	wait_queue_head_t lock_queue;	/* Queue of blocked processes	   */
314	unsigned long	  lock_time;	/* Time of last lock in jiffies	   */
315} drm_lock_data_t;
316
317typedef struct drm_device_dma {
318#if 0
319				/* Performance Counters */
320	atomic_t	  total_prio;	/* Total DRM_DMA_PRIORITY	   */
321	atomic_t	  total_bytes;	/* Total bytes DMA'd		   */
322	atomic_t	  total_dmas;	/* Total DMA buffers dispatched	   */
323
324	atomic_t	  total_missed_dma;  /* Missed drm_do_dma	    */
325	atomic_t	  total_missed_lock; /* Missed lock in drm_do_dma   */
326	atomic_t	  total_missed_free; /* Missed drm_free_this_buffer */
327	atomic_t	  total_missed_sched;/* Missed drm_dma_schedule	    */
328
329	atomic_t	  total_tried;	/* Tried next_buffer		    */
330	atomic_t	  total_hit;	/* Sent next_buffer		    */
331	atomic_t	  total_lost;	/* Lost interrupt		    */
332#endif
333
334	drm_buf_entry_t	  bufs[DRM_MAX_ORDER+1];
335	int		  buf_count;
336	drm_buf_t	  **buflist;	/* Vector of pointers info bufs	   */
337	int		  seg_count;
338	int		  page_count;
339	unsigned long	  *pagelist;
340	unsigned long	  byte_count;
341	enum {
342		_DRM_DMA_USE_AGP = 0x01,
343		_DRM_DMA_USE_SG  = 0x02
344	} flags;
345
346				/* DMA support */
347	drm_buf_t	  *this_buffer;	/* Buffer being sent		   */
348	drm_buf_t	  *next_buffer; /* Selected buffer to send	   */
349	drm_queue_t	  *next_queue;	/* Queue from which buffer selected*/
350	wait_queue_head_t waiting;	/* Processes waiting on free bufs  */
351} drm_device_dma_t;
352
353#if __REALLY_HAVE_AGP
354typedef struct drm_agp_mem {
355	void               *handle;
356	unsigned long      bound; /* address */
357	int                pages;
358	struct drm_agp_mem *prev;
359	struct drm_agp_mem *next;
360} drm_agp_mem_t;
361
362typedef struct drm_agp_head {
363	device_t	   agpdev;
364	struct agp_info    info;
365	const char         *chipset;
366	drm_agp_mem_t      *memory;
367	unsigned long      mode;
368	int                enabled;
369	int                acquired;
370	unsigned long      base;
371   	int 		   agp_mtrr;
372	int		   cant_use_aperture;
373	unsigned long	   page_mask;
374} drm_agp_head_t;
375#endif
376
377typedef struct drm_sg_mem {
378	unsigned long   handle;
379	void            *virtual;
380	int             pages;
381	dma_addr_t	*busaddr;
382} drm_sg_mem_t;
383
384typedef struct drm_sigdata {
385	int           context;
386	drm_hw_lock_t *lock;
387} drm_sigdata_t;
388
389typedef struct drm_local_map {
390	unsigned long	offset;	 /* Physical address (0 for SAREA)*/
391	unsigned long	size;	 /* Physical size (bytes)	    */
392	drm_map_type_t	type;	 /* Type of memory mapped		    */
393	drm_map_flags_t flags;	 /* Flags				    */
394	void		*handle; /* User-space: "Handle" to pass to mmap    */
395				 /* Kernel-space: kernel-virtual address    */
396	int		mtrr;	 /* MTRR slot used			    */
397				 /* Private data			    */
398	bus_space_tag_t iot;
399	bus_space_handle_t ioh;
400} drm_local_map_t;
401
402typedef TAILQ_HEAD(drm_map_list, drm_map_list_entry) drm_map_list_t;
403typedef struct drm_map_list_entry {
404	TAILQ_ENTRY(drm_map_list_entry) link;
405	drm_local_map_t	*map;
406} drm_map_list_entry_t;
407
408TAILQ_HEAD(drm_vbl_sig_list, drm_vbl_sig);
409typedef struct drm_vbl_sig {
410	TAILQ_ENTRY(drm_vbl_sig) link;
411	unsigned int	sequence;
412	int		signo;
413	int		pid;
414} drm_vbl_sig_t;
415
416struct drm_device {
417#ifdef __NetBSD__
418	struct device	  device;	/* NetBSD's softc is an extension of struct device */
419#endif
420	const char	  *name;	/* Simple driver name		   */
421	char		  *unique;	/* Unique identifier: e.g., busid  */
422	int		  unique_len;	/* Length of unique field	   */
423#ifdef __FreeBSD__
424	device_t	  device;	/* Device instance from newbus     */
425#endif
426	dev_t		  devnode;	/* Device number for mknod	   */
427	char		  *devname;	/* For /proc/interrupts		   */
428
429	int		  blocked;	/* Blocked due to VC switch?	   */
430	int		  flags;	/* Flags to open(2)		   */
431	int		  writable;	/* Opened with FWRITE		   */
432
433				/* Locks */
434	DRM_SPINTYPE	  count_lock;	/* For inuse, open_count, buf_use  */
435	struct lock       dev_lock;	/* For others			   */
436				/* Usage Counters */
437	int		  open_count;	/* Outstanding files open	   */
438	atomic_t	  ioctl_count;	/* Outstanding IOCTLs pending	   */
439	atomic_t	  vma_count;	/* Outstanding vma areas open	   */
440	int		  buf_use;	/* Buffers in use -- cannot alloc  */
441	atomic_t	  buf_alloc;	/* Buffer allocation in progress   */
442
443				/* Performance counters */
444	unsigned long     counters;
445	drm_stat_type_t   types[15];
446	atomic_t          counts[15];
447
448				/* Authentication */
449	drm_file_list_t   files;
450	drm_magic_head_t  magiclist[DRM_HASH_SIZE];
451
452				/* Memory management */
453	drm_map_list_t	  *maplist;	/* Linked list of regions	   */
454	int		  map_count;	/* Number of mappable regions	   */
455
456	drm_local_map_t	  **context_sareas;
457	int		  max_context;
458
459	drm_vma_entry_t	  *vmalist;	/* List of vmas (for debugging)	   */
460	drm_lock_data_t	  lock;		/* Information on hardware lock	   */
461
462				/* DMA queues (contexts) */
463	int		  queue_count;	/* Number of active DMA queues	   */
464	int		  queue_reserved; /* Number of reserved DMA queues */
465	int		  queue_slots;	/* Actual length of queuelist	   */
466	drm_queue_t	  **queuelist;	/* Vector of pointers to DMA queues */
467	drm_device_dma_t  *dma;		/* Optional pointer for DMA support */
468
469				/* Context support */
470	int		  irq;		/* Interrupt used by board	   */
471	int		  irqrid;		/* Interrupt used by board	   */
472#ifdef __FreeBSD__
473	struct resource   *irqr;	/* Resource for interrupt used by board	   */
474#elif defined(__NetBSD__)
475	struct pci_attach_args  pa;
476	pci_intr_handle_t	ih;
477#endif
478	void		  *irqh;	/* Handle from bus_setup_intr      */
479	atomic_t	  context_flag;	/* Context swapping flag	   */
480	atomic_t	  interrupt_flag; /* Interruption handler flag	   */
481	atomic_t	  dma_flag;	/* DMA dispatch flag		   */
482	struct callout    timer;	/* Timer for delaying ctx switch   */
483	wait_queue_head_t context_wait; /* Processes waiting on ctx switch */
484	int		  last_checked;	/* Last context checked for DMA	   */
485	int		  last_context;	/* Last current context		   */
486	unsigned long	  last_switch;	/* jiffies at last context switch  */
487#if __FreeBSD_version >= 400005
488	struct task       task;
489#endif
490#if __HAVE_VBL_IRQ
491   	wait_queue_head_t vbl_queue;	/* vbl wait channel */
492   	atomic_t          vbl_received;
493#if 0 /* vbl signals are untested, ntested */
494	struct drm_vbl_sig_list vbl_sig_list;
495	DRM_SPINTYPE      vbl_lock;
496#endif
497#endif
498	cycles_t	  ctx_start;
499	cycles_t	  lck_start;
500#if __HAVE_DMA_HISTOGRAM
501	drm_histogram_t	  histo;
502#endif
503
504				/* Callback to X server for context switch
505				   and for heavy-handed reset. */
506	char		  buf[DRM_BSZ]; /* Output buffer		   */
507	char		  *buf_rp;	/* Read pointer			   */
508	char		  *buf_wp;	/* Write pointer		   */
509	char		  *buf_end;	/* End pointer			   */
510#ifdef __FreeBSD__
511	struct sigio      *buf_sigio;	/* Processes waiting for SIGIO     */
512#elif defined(__NetBSD__)
513	pid_t		  buf_pgid;
514#endif
515	struct selinfo    buf_sel;	/* Workspace for select/poll       */
516	int               buf_selecting;/* True if poll sleeper            */
517	wait_queue_head_t buf_readers;	/* Processes waiting to read	   */
518	wait_queue_head_t buf_writers;	/* Processes waiting to ctx switch */
519
520				/* Sysctl support */
521	struct drm_sysctl_info *sysctl;
522
523#if __REALLY_HAVE_AGP
524	drm_agp_head_t    *agp;
525#endif
526	drm_sg_mem_t      *sg;  /* Scatter gather memory */
527	atomic_t          *ctx_bitmap;
528	void		  *dev_private;
529	drm_sigdata_t     sigdata; /* For block_all_signals */
530	sigset_t          sigmask;
531};
532
533extern int	     DRM(flags);
534extern void	     DRM(parse_options)( char *s );
535extern int           DRM(cpu_valid)( void );
536
537				/* Authentication (drm_auth.h) */
538extern int           DRM(add_magic)(drm_device_t *dev, drm_file_t *priv,
539				    drm_magic_t magic);
540extern int           DRM(remove_magic)(drm_device_t *dev, drm_magic_t magic);
541
542				/* Driver support (drm_drv.h) */
543extern int           DRM(version)( DRM_IOCTL_ARGS );
544extern int	     DRM(write_string)(drm_device_t *dev, const char *s);
545
546				/* Memory management support (drm_memory.h) */
547extern void	     DRM(mem_init)(void);
548extern void	     DRM(mem_uninit)(void);
549extern void	     *DRM(alloc)(size_t size, int area);
550extern void	     *DRM(realloc)(void *oldpt, size_t oldsize, size_t size,
551				   int area);
552extern char	     *DRM(strdup)(const char *s, int area);
553extern void	     DRM(strfree)(char *s, int area);
554extern void	     DRM(free)(void *pt, size_t size, int area);
555extern void	     *DRM(ioremap)(drm_device_t *dev, drm_local_map_t *map);
556extern void	     *DRM(ioremap_nocache)(drm_device_t *dev, drm_local_map_t *map);
557extern void	     DRM(ioremapfree)(drm_local_map_t *map);
558
559#if __REALLY_HAVE_AGP
560extern agp_memory    *DRM(alloc_agp)(int pages, u32 type);
561extern int           DRM(free_agp)(agp_memory *handle, int pages);
562extern int           DRM(bind_agp)(agp_memory *handle, unsigned int start);
563extern int           DRM(unbind_agp)(agp_memory *handle);
564#endif
565
566extern int	     DRM(context_switch)(drm_device_t *dev, int old, int new);
567extern int	     DRM(context_switch_complete)(drm_device_t *dev, int new);
568
569#if __HAVE_CTX_BITMAP
570extern int	     DRM(ctxbitmap_init)( drm_device_t *dev );
571extern void	     DRM(ctxbitmap_cleanup)( drm_device_t *dev );
572extern void          DRM(ctxbitmap_free)( drm_device_t *dev, int ctx_handle );
573extern int           DRM(ctxbitmap_next)( drm_device_t *dev );
574#endif
575
576				/* Locking IOCTL support (drm_lock.h) */
577extern int	     DRM(lock_take)(__volatile__ unsigned int *lock,
578				    unsigned int context);
579extern int	     DRM(lock_transfer)(drm_device_t *dev,
580					__volatile__ unsigned int *lock,
581					unsigned int context);
582extern int	     DRM(lock_free)(drm_device_t *dev,
583				    __volatile__ unsigned int *lock,
584				    unsigned int context);
585extern int	     DRM(flush_unblock)(drm_device_t *dev, int context,
586					drm_lock_flags_t flags);
587extern int	     DRM(flush_block_and_flush)(drm_device_t *dev, int context,
588						drm_lock_flags_t flags);
589extern int           DRM(notifier)(void *priv);
590
591				/* Buffer management support (drm_bufs.h) */
592extern int	     DRM(order)( unsigned long size );
593
594#if __HAVE_DMA
595				/* DMA support (drm_dma.h) */
596extern int	     DRM(dma_setup)(drm_device_t *dev);
597extern void	     DRM(dma_takedown)(drm_device_t *dev);
598extern void	     DRM(free_buffer)(drm_device_t *dev, drm_buf_t *buf);
599extern void	     DRM(reclaim_buffers)(drm_device_t *dev, pid_t pid);
600#if __HAVE_OLD_DMA
601/* GH: This is a dirty hack for now...
602 */
603extern void	     DRM(clear_next_buffer)(drm_device_t *dev);
604extern int	     DRM(select_queue)(drm_device_t *dev,
605				       void (*wrapper)(unsigned long));
606extern int	     DRM(dma_enqueue)(drm_device_t *dev, drm_dma_t *dma);
607extern int	     DRM(dma_get_buffers)(drm_device_t *dev, drm_dma_t *dma);
608#endif
609#if __HAVE_DMA_IRQ
610extern int           DRM(irq_install)( drm_device_t *dev, int irq );
611extern int           DRM(irq_uninstall)( drm_device_t *dev );
612extern void          DRM(dma_service)( DRM_IRQ_ARGS );
613extern void          DRM(driver_irq_preinstall)( drm_device_t *dev );
614extern void          DRM(driver_irq_postinstall)( drm_device_t *dev );
615extern void          DRM(driver_irq_uninstall)( drm_device_t *dev );
616#if __HAVE_DMA_IRQ_BH
617extern void          DRM(dma_immediate_bh)( DRM_TASKQUEUE_ARGS );
618#endif
619#endif
620#if DRM_DMA_HISTOGRAM
621extern int	     DRM(histogram_slot)(unsigned long count);
622extern void	     DRM(histogram_compute)(drm_device_t *dev, drm_buf_t *buf);
623#endif
624
625				/* Buffer list support (drm_lists.h) */
626#if __HAVE_DMA_WAITLIST
627extern int	     DRM(waitlist_create)(drm_waitlist_t *bl, int count);
628extern int	     DRM(waitlist_destroy)(drm_waitlist_t *bl);
629extern int	     DRM(waitlist_put)(drm_waitlist_t *bl, drm_buf_t *buf);
630extern drm_buf_t     *DRM(waitlist_get)(drm_waitlist_t *bl);
631#endif
632#if __HAVE_DMA_FREELIST
633extern int	     DRM(freelist_create)(drm_freelist_t *bl, int count);
634extern int	     DRM(freelist_destroy)(drm_freelist_t *bl);
635extern int	     DRM(freelist_put)(drm_device_t *dev, drm_freelist_t *bl,
636				       drm_buf_t *buf);
637extern drm_buf_t     *DRM(freelist_get)(drm_freelist_t *bl, int block);
638#endif
639#endif /* __HAVE_DMA */
640#if __HAVE_VBL_IRQ
641extern int           DRM(vblank_wait)(drm_device_t *dev, unsigned int *vbl_seq);
642extern void          DRM(vbl_send_signals)( drm_device_t *dev );
643#endif
644
645#if __REALLY_HAVE_AGP
646				/* AGP/GART support (drm_agpsupport.h) */
647extern drm_agp_head_t *DRM(agp_init)(void);
648extern void           DRM(agp_uninit)(void);
649extern void           DRM(agp_do_release)(void);
650extern agp_memory     *DRM(agp_allocate_memory)(size_t pages, u32 type);
651extern int            DRM(agp_free_memory)(agp_memory *handle);
652extern int            DRM(agp_bind_memory)(agp_memory *handle, off_t start);
653extern int            DRM(agp_unbind_memory)(agp_memory *handle);
654#endif
655
656#if __HAVE_SG
657				/* Scatter Gather Support (drm_scatter.h) */
658extern void           DRM(sg_cleanup)(drm_sg_mem_t *entry);
659#endif
660
661#if __REALLY_HAVE_SG
662                               /* ATI PCIGART support (ati_pcigart.h) */
663extern int            DRM(ati_pcigart_init)(drm_device_t *dev,
664					    unsigned long *addr,
665					    dma_addr_t *bus_addr);
666extern int            DRM(ati_pcigart_cleanup)(drm_device_t *dev,
667					       unsigned long addr,
668					       dma_addr_t bus_addr);
669#endif
670
671#endif /* __KERNEL__ */
672#endif /* _DRM_P_H_ */
673