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
|
/* xf86drm.h -- OS-independent header for DRM user-level library interface
* Created: Tue Jan 5 08:17:23 1999 by faith@precisioninsight.com
*
* Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
* 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
* PRECISION INSIGHT 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.
*
* Author: Rickard E. (Rik) Faith <faith@precisioninsight.com>
*
* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/xf86drm.h,v 1.7 2000/02/23 04:47:21 martin Exp $
*
*/
#ifndef _XF86DRM_H_
#define _XF86DRM_H_
#define DRM_ERR_NO_DEVICE (-1001)
#define DRM_ERR_NO_ACCESS (-1002)
#define DRM_ERR_NOT_ROOT (-1003)
#define DRM_ERR_INVALID (-1004)
#define DRM_ERR_NO_FD (-1005)
typedef unsigned long drmHandle, *drmHandlePtr; /* To mapped regions */
typedef unsigned int drmSize, *drmSizePtr; /* For mapped regions */
typedef void *drmAddress, **drmAddressPtr; /* For mapped regions */
typedef unsigned int drmContext, *drmContextPtr; /* GLXContext handle */
typedef unsigned int drmDrawable, *drmDrawablePtr; /* Unused */
typedef unsigned int drmMagic, *drmMagicPtr; /* Magic for auth */
typedef struct _drmVersion {
int version_major; /* Major version */
int version_minor; /* Minor version */
int version_patchlevel; /* Patch level */
int name_len; /* Length of name buffer */
char *name; /* Name of driver */
int date_len; /* Length of date buffer */
char *date; /* User-space buffer to hold date */
int desc_len; /* Length of desc buffer */
char *desc; /* User-space buffer to hold desc */
} drmVersion, *drmVersionPtr;
/* All of these enums *MUST* match with the
kernel implementation -- so do *NOT*
change them! (The drmlib implementation
will just copy the flags instead of
translating them.) */
typedef enum {
DRM_FRAME_BUFFER = 0, /* WC, no caching, no core dump */
DRM_REGISTERS = 1, /* no caching, no core dump */
DRM_SHM = 2, /* shared, cached */
DRM_AGP = 3 /* AGP/GART */
} drmMapType;
typedef enum {
DRM_RESTRICTED = 0x0001, /* Cannot be mapped to client-virtual */
DRM_READ_ONLY = 0x0002, /* Read-only in client-virtual */
DRM_LOCKED = 0x0004, /* Physical pages locked */
DRM_KERNEL = 0x0008, /* Kernel requires access */
DRM_WRITE_COMBINING = 0x0010, /* Use write-combining, if available */
DRM_CONTAINS_LOCK = 0x0020 /* SHM page that contains lock */
} drmMapFlags;
typedef enum { /* These values *MUST* match drm.h */
/* Flags for DMA buffer dispatch */
DRM_DMA_BLOCK = 0x01, /* Block until buffer dispatched. Note,
the buffer may not yet have been
processed by the hardware -- getting a
hardware lock with the hardware
quiescent will ensure that the buffer
has been processed. */
DRM_DMA_WHILE_LOCKED = 0x02, /* Dispatch while lock held */
DRM_DMA_PRIORITY = 0x04, /* High priority dispatch */
/* Flags for DMA buffer request */
DRM_DMA_WAIT = 0x10, /* Wait for free buffers */
DRM_DMA_SMALLER_OK = 0x20, /* Smaller-than-requested buffers ok */
DRM_DMA_LARGER_OK = 0x40 /* Larger-than-requested buffers ok */
} drmDMAFlags;
typedef enum {
DRM_PAGE_ALIGN = 0x01,
DRM_AGP_BUFFER = 0x02
} drmBufDescFlags;
typedef enum {
DRM_LOCK_READY = 0x01, /* Wait until hardware is ready for DMA */
DRM_LOCK_QUIESCENT = 0x02, /* Wait until hardware quiescent */
DRM_LOCK_FLUSH = 0x04, /* Flush this context's DMA queue first */
DRM_LOCK_FLUSH_ALL = 0x08, /* Flush all DMA queues first */
/* These *HALT* flags aren't supported yet
-- they will be used to support the
full-screen DGA-like mode. */
DRM_HALT_ALL_QUEUES = 0x10, /* Halt all current and future queues */
DRM_HALT_CUR_QUEUES = 0x20 /* Halt all current queues */
} drmLockFlags;
typedef enum {
DRM_CONTEXT_PRESERVED = 0x01, /* This context is preserved and
never swapped. */
DRM_CONTEXT_2DONLY = 0x02 /* This context is for 2D rendering only. */
} drmContextFlags, *drmContextFlagsPtr;
typedef struct _drmBufDesc {
int count; /* Number of buffers of this size */
int size; /* Size in bytes */
int low_mark; /* Low water mark */
int high_mark; /* High water mark */
} drmBufDesc, *drmBufDescPtr;
typedef struct _drmBufInfo {
int count; /* Number of buffers described in list */
drmBufDescPtr list; /* List of buffer descriptions */
} drmBufInfo, *drmBufInfoPtr;
typedef struct _drmBuf {
int idx; /* Index into master buflist */
int total; /* Buffer size */
int used; /* Amount of buffer in use (for DMA) */
drmAddress address; /* Address */
} drmBuf, *drmBufPtr;
typedef struct _drmBufMap {
int count; /* Number of buffers mapped */
drmBufPtr list; /* Buffers */
} drmBufMap, *drmBufMapPtr;
typedef struct _drmLock {
volatile unsigned int lock;
char padding[60];
/* This is big enough for most current (and future?) architectures:
DEC Alpha: 32 bytes
Intel Merced: ?
Intel P5/PPro/PII/PIII: 32 bytes
Intel StrongARM: 32 bytes
Intel i386/i486: 16 bytes
MIPS: 32 bytes (?)
Motorola 68k: 16 bytes
Motorola PowerPC: 32 bytes
Sun SPARC: 32 bytes
*/
} drmLock, *drmLockPtr;
typedef struct _drmDMAReq {
/* Indices here refer to the offset into
list in drmBufInfo */
drmContext context; /* Context handle */
int send_count; /* Number of buffers to send */
int *send_list; /* List of handles to buffers */
int *send_sizes; /* Lengths of data to send, in bytes */
drmDMAFlags flags; /* Flags */
int request_count; /* Number of buffers requested */
int request_size; /* Desired size of buffers requested */
int *request_list; /* Buffer information */
int *request_sizes; /* Minimum acceptable sizes */
int granted_count; /* Number of buffers granted at this size */
} drmDMAReq, *drmDMAReqPtr;
#if 0
/* The kernel does this, but it doesn't
seem necessary with recent gcc's. */
typedef struct { unsigned int a[100]; } __drm_dummy_lock_t;
#define __drm_dummy_lock(lock) (*(__volatile__ __drm_dummy_lock_t *)lock)
#else
#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
#endif
#define DRM_LOCK_HELD 0x80000000 /* Hardware lock is held */
#define DRM_LOCK_CONT 0x40000000 /* Hardware lock is contended */
#if __GNUC__ >= 2 && defined(__i386)
/* Reflect changes here to drmP.h */
#define DRM_CAS(lock,old,new,__ret) \
do { \
int __dummy; /* Can't mark eax as clobbered */ \
__asm__ __volatile__( \
"lock ; cmpxchg %4,%1\n\t" \
"setnz %0" \
: "=d" (__ret), \
"=m" (__drm_dummy_lock(lock)), \
"=a" (__dummy) \
: "2" (old), \
"r" (new)); \
} while (0)
#endif
#ifndef DRM_CAS
#define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
#endif
#define DRM_LIGHT_LOCK(fd,lock,context) \
do { \
char __ret; \
DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
if (__ret) drmGetLock(fd,context,0); \
} while(0)
/* This one counts fast locks -- for
benchmarking only. */
#define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \
do { \
char __ret; \
DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
if (__ret) drmGetLock(fd,context,0); \
else ++count; \
} while(0)
#define DRM_LOCK(fd,lock,context,flags) \
do { \
if (flags) drmGetLock(fd,context,flags); \
else DRM_LIGHT_LOCK(fd,lock,context); \
} while(0)
#define DRM_UNLOCK(fd,lock,context) \
do { \
char __ret; \
DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \
if (__ret) drmUnlock(fd,context); \
} while(0)
/* Simple spin locks */
#define DRM_SPINLOCK(spin,val) \
do { \
char __ret; \
do { \
DRM_CAS(spin,0,val,__ret); \
if (__ret) while ((spin)->lock); \
} while (__ret); \
} while(0)
#define DRM_SPINLOCK_TAKE(spin,val) \
do { \
char __ret; \
int cur; \
do { \
cur = (*spin).lock; \
DRM_CAS(spin,cur,val,__ret); \
} while (__ret); \
} while(0)
#define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \
do { \
int __i; \
__ret = 1; \
for (__i = 0; __ret && __i < count; __i++) { \
DRM_CAS(spin,0,val,__ret); \
if (__ret) for (;__i < count && (spin)->lock; __i++); \
} \
} while(0)
#define DRM_SPINUNLOCK(spin,val) \
do { \
char __ret; \
if ((*spin).lock == val) { /* else server stole lock */ \
do { \
DRM_CAS(spin,val,0,__ret); \
} while (__ret); \
} \
} while(0)
/* General user-level programmer's API: unprivileged */
extern int drmAvailable(void);
extern int drmOpen(const char *name, const char *busid);
extern int drmClose(int fd);
extern drmVersionPtr drmGetVersion(int fd);
extern void drmFreeVersion(drmVersionPtr);
extern int drmGetMagic(int fd, drmMagicPtr magic);
extern char *drmGetBusid(int fd);
extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum,
int funcnum);
/* General user-level programmer's API: X server (root) only */
extern void drmFreeBusid(const char *busid);
extern int drmSetBusid(int fd, const char *busid);
extern int drmAuthMagic(int fd, drmMagic magic);
extern int drmAddMap(int fd,
drmHandle offset,
drmSize size,
drmMapType type,
drmMapFlags flags,
drmHandlePtr handle);
extern int drmAddBufs(int fd, int count, int size,
drmBufDescFlags flags,
int agp_offset);
extern int drmMarkBufs(int fd, double low, double high);
extern int drmCreateContext(int fd, drmContextPtr handle);
extern int drmSetContextFlags(int fd, drmContext context,
drmContextFlags flags);
extern int drmGetContextFlags(int fd, drmContext context,
drmContextFlagsPtr flags);
extern int drmAddContextTag(int fd, drmContext context, void *tag);
extern int drmDelContextTag(int fd, drmContext context);
extern void *drmGetContextTag(int fd, drmContext context);
extern drmContextPtr drmGetReservedContextList(int fd, int *count);
extern void drmFreeReservedContextList(drmContextPtr);
extern int drmSwitchToContext(int fd, drmContext context);
extern int drmDestroyContext(int fd, drmContext handle);
extern int drmCreateDrawable(int fd, drmDrawablePtr handle);
extern int drmDestroyDrawable(int fd, drmDrawable handle);
extern int drmCtlInstHandler(int fd, int irq);
extern int drmCtlUninstHandler(int fd);
extern int drmInstallSIGIOHandler(int fd,
void (*f)(int fd,
void *oldctx,
void *newctx));
extern int drmRemoveSIGIOHandler(int fd);
/* General user-level programmer's API: authenticated client and/or X */
extern int drmMap(int fd,
drmHandle handle,
drmSize size,
drmAddressPtr address);
extern int drmUnmap(drmAddress address, drmSize size);
extern drmBufInfoPtr drmGetBufInfo(int fd);
extern drmBufMapPtr drmMapBufs(int fd);
extern int drmUnmapBufs(drmBufMapPtr bufs);
extern int drmDMA(int fd, drmDMAReqPtr request);
extern int drmFreeBufs(int fd, int count, int *list);
extern int drmGetLock(int fd,
drmContext context,
drmLockFlags flags);
extern int drmUnlock(int fd, drmContext context);
extern int drmFinish(int fd, int context, drmLockFlags flags);
/* AGP/GART support: X server (root) only */
extern int drmAgpAcquire(int fd);
extern int drmAgpRelease(int fd);
extern int drmAgpEnable(int fd, unsigned long mode);
extern int drmAgpAlloc(int fd, unsigned long size,
unsigned long type, unsigned long *address,
unsigned long *handle);
extern int drmAgpFree(int fd, unsigned long handle);
extern int drmAgpBind(int fd, unsigned long handle,
unsigned long offset);
extern int drmAgpUnbind(int fd, unsigned long handle);
/* AGP/GART info: authenticated client and/or X */
extern int drmAgpVersionMajor(int fd);
extern int drmAgpVersionMinor(int fd);
extern unsigned long drmAgpGetMode(int fd);
extern unsigned long drmAgpBase(int fd); /* Physical location */
extern unsigned long drmAgpSize(int fd); /* Bytes */
extern unsigned long drmAgpMemoryUsed(int fd);
extern unsigned long drmAgpMemoryAvail(int fd);
extern unsigned int drmAgpVendorId(int fd);
extern unsigned int drmAgpDeviceId(int fd);
/* Support routines */
extern int drmError(int err, const char *label);
extern void *drmMalloc(int size);
extern void drmFree(void *pt);
/* Hash table routines */
extern void *drmHashCreate(void);
extern int drmHashDestroy(void *t);
extern int drmHashLookup(void *t, unsigned long key, void **value);
extern int drmHashInsert(void *t, unsigned long key, void *value);
extern int drmHashDelete(void *t, unsigned long key);
extern int drmHashFirst(void *t, unsigned long *key, void **value);
extern int drmHashNext(void *t, unsigned long *key, void **value);
/* PRNG routines */
extern void *drmRandomCreate(unsigned long seed);
extern int drmRandomDestroy(void *state);
extern unsigned long drmRandom(void *state);
extern double drmRandomDouble(void *state);
/* Skip list routines */
extern void *drmSLCreate(void);
extern int drmSLDestroy(void *l);
extern int drmSLLookup(void *l, unsigned long key, void **value);
extern int drmSLInsert(void *l, unsigned long key, void *value);
extern int drmSLDelete(void *l, unsigned long key);
extern int drmSLNext(void *l, unsigned long *key, void **value);
extern int drmSLFirst(void *l, unsigned long *key, void **value);
extern void drmSLDump(void *l);
extern int drmSLLookupNeighbors(void *l, unsigned long key,
unsigned long *prev_key, void **prev_value,
unsigned long *next_key, void **next_value);
#endif
|
