src/glx/mini/xf86drm.h

   1 /* xf86drm.h -- OS-independent header for DRM user-level library interface
   2  * Created: Tue Jan  5 08:17:23 1999 by faith@precisioninsight.com
   3  *
   4  * Copyright 1999, 2000 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  * PRECISION INSIGHT 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 OTHER
  25  * DEALINGS IN THE SOFTWARE.
  26  *
  27  * Author: Rickard E. (Rik) Faith <faith@valinux.com>
  28  *
  29  * $XFree86: xc/programs/Xserver/hw/xfree86/os-support/xf86drm.h,v 1.22 2003/06/12 14:12:35 eich Exp $
  30  *
  31  */
  32
  33 #ifndef _XF86DRM_H_
  34 #define _XF86DRM_H_
  35
  36                                 /* Defaults, if nothing set in xf86config */
  37 #define DRM_DEV_UID      0
  38 #define DRM_DEV_GID      0
  39 /* Default /dev/dri directory permissions 0755 */
  40 #define DRM_DEV_DIRMODE         \
  41         (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
  42 #define DRM_DEV_MODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
  43
  44 #define DRM_DIR_NAME  "/dev/dri"
  45 #define DRM_DEV_NAME  "%s/card%d"
  46 #define DRM_PROC_NAME "/proc/dri/" /* For backware Linux compatibility */
  47
  48 #define DRM_ERR_NO_DEVICE  (-1001)
  49 #define DRM_ERR_NO_ACCESS  (-1002)
  50 #define DRM_ERR_NOT_ROOT   (-1003)
  51 #define DRM_ERR_INVALID    (-1004)
  52 #define DRM_ERR_NO_FD      (-1005)
  53
  54 #define DRM_AGP_NO_HANDLE 0
  55
  56 typedef unsigned long drmHandle,   *drmHandlePtr;   /* To mapped regions    */
  57 typedef unsigned int  drmSize,     *drmSizePtr;     /* For mapped regions   */
  58 typedef void          *drmAddress, **drmAddressPtr; /* For mapped regions   */
  59 typedef unsigned int  drmContext,  *drmContextPtr;  /* GLXContext handle    */
  60 typedef unsigned int  drmDrawable, *drmDrawablePtr; /* Unused               */
  61 typedef unsigned int  drmMagic,    *drmMagicPtr;    /* Magic for auth       */
  62
  63 typedef struct _drmVersion {
  64     int     version_major;        /* Major version                          */
  65     int     version_minor;        /* Minor version                          */
  66     int     version_patchlevel;   /* Patch level                            */
  67     int     name_len;             /* Length of name buffer                  */
  68     char    *name;                /* Name of driver                         */
  69     int     date_len;             /* Length of date buffer                  */
  70     char    *date;                /* User-space buffer to hold date         */
  71     int     desc_len;             /* Length of desc buffer                  */
  72     char    *desc;                /* User-space buffer to hold desc         */
  73 } drmVersion, *drmVersionPtr;
  74
  75 typedef struct _drmStats {
  76     unsigned long count;             /* Number of data                      */
  77     struct {
  78         unsigned long value;         /* Value from kernel                   */
  79         const char    *long_format;  /* Suggested format for long_name      */
  80         const char    *long_name;    /* Long name for value                 */
  81         const char    *rate_format;  /* Suggested format for rate_name      */
  82         const char    *rate_name;    /* Short name for value per second     */
  83         int           isvalue;       /* True if value (vs. counter)         */
  84         const char    *mult_names;   /* Multiplier names (e.g., "KGM")      */
  85         int           mult;          /* Multiplier value (e.g., 1024)       */
  86         int           verbose;       /* Suggest only in verbose output      */
  87     } data[15];
  88 } drmStatsT;
  89
  90
  91                                 /* All of these enums *MUST* match with the
  92                                    kernel implementation -- so do *NOT*
  93                                    change them!  (The drmlib implementation
  94                                    will just copy the flags instead of
  95                                    translating them.) */
  96 typedef enum {
  97     DRM_FRAME_BUFFER    = 0,      /* WC, no caching, no core dump           */
  98     DRM_REGISTERS       = 1,      /* no caching, no core dump               */
  99     DRM_SHM             = 2,      /* shared, cached                         */
 100     DRM_AGP             = 3,      /* AGP/GART                               */
 101     DRM_SCATTER_GATHER  = 4       /* PCI scatter/gather                     */
 102 } drmMapType;
 103
 104 typedef enum {
 105     DRM_RESTRICTED      = 0x0001, /* Cannot be mapped to client-virtual     */
 106     DRM_READ_ONLY       = 0x0002, /* Read-only in client-virtual            */
 107     DRM_LOCKED          = 0x0004, /* Physical pages locked                  */
 108     DRM_KERNEL          = 0x0008, /* Kernel requires access                 */
 109     DRM_WRITE_COMBINING = 0x0010, /* Use write-combining, if available      */
 110     DRM_CONTAINS_LOCK   = 0x0020, /* SHM page that contains lock            */
 111     DRM_REMOVABLE       = 0x0040  /* Removable mapping                      */
 112 } drmMapFlags;
 113
 114 typedef enum {                   /* These values *MUST* match drm.h         */
 115                                  /* Flags for DMA buffer dispatch           */
 116     DRM_DMA_BLOCK        = 0x01, /* Block until buffer dispatched.  Note,
 117                                      the buffer may not yet have been
 118                                      processed by the hardware -- getting a
 119                                      hardware lock with the hardware
 120                                      quiescent will ensure that the buffer
 121                                      has been processed.                    */
 122     DRM_DMA_WHILE_LOCKED = 0x02, /* Dispatch while lock held                */
 123     DRM_DMA_PRIORITY     = 0x04, /* High priority dispatch                  */
 124
 125                                  /* Flags for DMA buffer request            */
 126     DRM_DMA_WAIT         = 0x10, /* Wait for free buffers                   */
 127     DRM_DMA_SMALLER_OK   = 0x20, /* Smaller-than-requested buffers ok       */
 128     DRM_DMA_LARGER_OK    = 0x40  /* Larger-than-requested buffers ok        */
 129 } drmDMAFlags;
 130
 131 typedef enum {
 132     DRM_PAGE_ALIGN       = 0x01,
 133     DRM_AGP_BUFFER       = 0x02,
 134     DRM_SG_BUFFER        = 0x04
 135 } drmBufDescFlags;
 136
 137 typedef enum {
 138     DRM_LOCK_READY      = 0x01, /* Wait until hardware is ready for DMA */
 139     DRM_LOCK_QUIESCENT  = 0x02, /* Wait until hardware quiescent        */
 140     DRM_LOCK_FLUSH      = 0x04, /* Flush this context's DMA queue first */
 141     DRM_LOCK_FLUSH_ALL  = 0x08, /* Flush all DMA queues first           */
 142                                 /* These *HALT* flags aren't supported yet
 143                                    -- they will be used to support the
 144                                    full-screen DGA-like mode. */
 145     DRM_HALT_ALL_QUEUES = 0x10, /* Halt all current and future queues   */
 146     DRM_HALT_CUR_QUEUES = 0x20  /* Halt all current queues              */
 147 } drmLockFlags;
 148
 149 typedef enum {
 150     DRM_CONTEXT_PRESERVED = 0x01, /* This context is preserved and
 151                                      never swapped. */
 152     DRM_CONTEXT_2DONLY    = 0x02  /* This context is for 2D rendering only. */
 153 } drmContextFlags, *drmContextFlagsPtr;
 154
 155 typedef struct _drmBufDesc {
 156     int              count;       /* Number of buffers of this size         */
 157     int              size;        /* Size in bytes                          */
 158     int              low_mark;    /* Low water mark                         */
 159     int              high_mark;   /* High water mark                        */
 160 } drmBufDesc, *drmBufDescPtr;
 161
 162 typedef struct _drmBufInfo {
 163     int              count;       /* Number of buffers described in list    */
 164     drmBufDescPtr    list;        /* List of buffer descriptions            */
 165 } drmBufInfo, *drmBufInfoPtr;
 166
 167 typedef struct _drmBuf {
 168     int              idx;         /* Index into master buflist              */
 169     int              total;       /* Buffer size                            */
 170     int              used;        /* Amount of buffer in use (for DMA)      */
 171     drmAddress       address;     /* Address                                */
 172 } drmBuf, *drmBufPtr;
 173
 174 typedef struct _drmBufMap {
 175     int              count;       /* Number of buffers mapped               */
 176     drmBufPtr        list;        /* Buffers                                */
 177 } drmBufMap, *drmBufMapPtr;
 178
 179 typedef struct _drmLock {
 180     volatile unsigned int lock;
 181     char                      padding[60];
 182     /* This is big enough for most current (and future?) architectures:
 183        DEC Alpha:              32 bytes
 184        Intel Merced:           ?
 185        Intel P5/PPro/PII/PIII: 32 bytes
 186        Intel StrongARM:        32 bytes
 187        Intel i386/i486:        16 bytes
 188        MIPS:                   32 bytes (?)
 189        Motorola 68k:           16 bytes
 190        Motorola PowerPC:       32 bytes
 191        Sun SPARC:              32 bytes
 192     */
 193 } drmLock, *drmLockPtr;
 194
 195 typedef struct _drmDMAReq {
 196                                   /* Indices here refer to the offset into
 197                                      list in drmBufInfo                     */
 198     drmContext    context;        /* Context handle                         */
 199     int           send_count;     /* Number of buffers to send              */
 200     int           *send_list;     /* List of handles to buffers             */
 201     int           *send_sizes;    /* Lengths of data to send, in bytes      */
 202     drmDMAFlags   flags;          /* Flags                                  */
 203     int           request_count;  /* Number of buffers requested            */
 204     int           request_size;   /* Desired size of buffers requested      */
 205     int           *request_list;  /* Buffer information                     */
 206     int           *request_sizes; /* Minimum acceptable sizes               */
 207     int           granted_count;  /* Number of buffers granted at this size */
 208 } drmDMAReq, *drmDMAReqPtr;
 209
 210 typedef struct _drmRegion {
 211     drmHandle     handle;
 212     unsigned int  offset;
 213     drmSize       size;
 214     drmAddress    map;
 215 } drmRegion, *drmRegionPtr;
 216
 217 typedef struct _drmTextureRegion {
 218     unsigned char next;
 219     unsigned char prev;
 220     unsigned char in_use;
 221     unsigned char padding;      /* Explicitly pad this out                 */
 222     unsigned int  age;
 223 } drmTextureRegion, *drmTextureRegionPtr;
 224
 225
 226 typedef struct _drmClipRect {
 227     unsigned short      x1; /* Upper left: inclusive */
 228     unsigned short      y1;
 229     unsigned short      x2; /* Lower right: exclusive */
 230     unsigned short      y2;
 231 } drmClipRect, *drmClipRectPtr;
 232
 233
 234 typedef enum {
 235     DRM_VBLANK_ABSOLUTE = 0x0,          /* Wait for specific vblank sequence number */
 236     DRM_VBLANK_RELATIVE = 0x1,          /* Wait for given number of vblanks */
 237     DRM_VBLANK_SIGNAL   = 0x40000000    /* Send signal instead of blocking */
 238 } drmVBlankSeqType;
 239
 240 typedef struct _drmVBlankReq {
 241         drmVBlankSeqType type;
 242         unsigned int sequence;
 243         unsigned long signal;
 244 } drmVBlankReq, *drmVBlankReqPtr;
 245
 246 typedef struct _drmVBlankReply {
 247         drmVBlankSeqType type;
 248         unsigned int sequence;
 249         long tval_sec;
 250         long tval_usec;
 251 } drmVBlankReply, *drmVBlankReplyPtr;
 252
 253 typedef union _drmVBlank {
 254         drmVBlankReq request;
 255         drmVBlankReply reply;
 256 } drmVBlank, *drmVBlankPtr;
 257
 258
 259
 260 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
 261
 262 #define DRM_LOCK_HELD  0x80000000 /* Hardware lock is held                 */
 263 #define DRM_LOCK_CONT  0x40000000 /* Hardware lock is contended            */
 264
 265 #if defined(__GNUC__) && (__GNUC__ >= 2)
 266 # if defined(__i386) || defined(__AMD64__)
 267                                 /* Reflect changes here to drmP.h */
 268 #define DRM_CAS(lock,old,new,__ret)                                    \
 269         do {                                                           \
 270                 int __dummy;    /* Can't mark eax as clobbered */      \
 271                 __asm__ __volatile__(                                  \
 272                         "lock ; cmpxchg %4,%1\n\t"                     \
 273                         "setnz %0"                                     \
 274                         : "=d" (__ret),                                \
 275                           "=m" (__drm_dummy_lock(lock)),               \
 276                           "=a" (__dummy)                               \
 277                         : "2" (old),                                   \
 278                           "r" (new));                                  \
 279         } while (0)
 280
 281 #elif defined(__alpha__)
 282
 283 #define DRM_CAS(lock, old, new, ret)            \
 284         do {                                    \
 285                 int old32;                      \
 286                 int cur32;                      \
 287                 __asm__ __volatile__(           \
 288                 "       mb\n"                   \
 289                 "       zap   %4, 0xF0, %0\n"   \
 290                 "       ldl_l %1, %2\n"         \
 291                 "       zap   %1, 0xF0, %1\n"   \
 292                 "       cmpeq %0, %1, %1\n"     \
 293                 "       beq   %1, 1f\n"         \
 294                 "       bis   %5, %5, %1\n"     \
 295                 "       stl_c %1, %2\n"         \
 296                 "1:     xor   %1, 1, %1\n"      \
 297                 "       stl   %1, %3"           \
 298                 : "+r" (old32),                 \
 299                   "+&r" (cur32),                \
 300                    "=m" (__drm_dummy_lock(lock)),\
 301                    "=m" (ret)                   \
 302                 : "r" (old),                    \
 303                   "r" (new));                   \
 304         } while(0)
 305
 306 #elif defined(__sparc__)
 307
 308 #define DRM_CAS(lock,old,new,__ret)                             \
 309 do {    register unsigned int __old __asm("o0");                \
 310         register unsigned int __new __asm("o1");                \
 311         register volatile unsigned int *__lock __asm("o2");     \
 312         __old = old;                                            \
 313         __new = new;                                            \
 314         __lock = (volatile unsigned int *)lock;                 \
 315         __asm__ __volatile__(                                   \
 316                 /*"cas [%2], %3, %0"*/                          \
 317                 ".word 0xd3e29008\n\t"                          \
 318                 /*"membar #StoreStore | #StoreLoad"*/           \
 319                 ".word 0x8143e00a"                              \
 320                 : "=&r" (__new)                                 \
 321                 : "0" (__new),                                  \
 322                   "r" (__lock),                                 \
 323                   "r" (__old)                                   \
 324                 : "memory");                                    \
 325         __ret = (__new != __old);                               \
 326 } while(0)
 327
 328 #elif defined(__ia64__)
 329
 330 #if 0
 331 /* this currently generates bad code (missing stop bits)... */
 332 #include <ia64intrin.h>
 333
 334 #define DRM_CAS(lock,old,new,__ret)                                           \
 335         do {                                                                  \
 336                 __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
 337                                                      (old), (new))            \
 338                          != (old));                                           \
 339         } while (0)
 340
 341 #else
 342 #define DRM_CAS(lock,old,new,__ret)                                       \
 343         do {                                                              \
 344                 unsigned int __result, __old = (old);                     \
 345                 __asm__ __volatile__(                                     \
 346                         "mf\n"                                            \
 347                         "mov ar.ccv=%2\n"                                 \
 348                         ";;\n"                                            \
 349                         "cmpxchg4.acq %0=%1,%3,ar.ccv"                    \
 350                         : "=r" (__result), "=m" (__drm_dummy_lock(lock))  \
 351                         : "r" (__old), "r" (new)                          \
 352                         : "memory");                                      \
 353                 __ret = (__result) != (__old);                            \
 354         } while (0)
 355
 356 #endif
 357
 358 #elif defined(__powerpc__)
 359
 360 #define DRM_CAS(lock,old,new,__ret)                     \
 361         do {                                            \
 362                 __asm__ __volatile__(                   \
 363                         "sync;"                         \
 364                         "0:    lwarx %0,0,%1;"          \
 365                         "      xor. %0,%3,%0;"          \
 366                         "      bne 1f;"                 \
 367                         "      stwcx. %2,0,%1;"         \
 368                         "      bne- 0b;"                \
 369                         "1:    "                        \
 370                         "sync;"                         \
 371                 : "=&r"(__ret)                          \
 372                 : "r"(lock), "r"(new), "r"(old)         \
 373                 : "cr0", "memory");                     \
 374         } while (0)
 375
 376 #endif /* architecture */
 377 #endif /* __GNUC__ >= 2 */
 378
 379 #ifndef DRM_CAS
 380 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
 381 #endif
 382
 383 #if defined(__alpha__) || defined(__powerpc__)
 384 #define DRM_CAS_RESULT(_result)         int _result
 385 #else
 386 #define DRM_CAS_RESULT(_result)         char _result
 387 #endif
 388
 389 #define DRM_LIGHT_LOCK(fd,lock,context)                                \
 390         do {                                                           \
 391                 DRM_CAS_RESULT(__ret);                                 \
 392                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 393                 if (__ret) drmGetLock(fd,context,0);                   \
 394         } while(0)
 395
 396                                 /* This one counts fast locks -- for
 397                                    benchmarking only. */
 398 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count)                    \
 399         do {                                                           \
 400                 DRM_CAS_RESULT(__ret);                                 \
 401                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 402                 if (__ret) drmGetLock(fd,context,0);                   \
 403                 else       ++count;                                    \
 404         } while(0)
 405
 406 #define DRM_LOCK(fd,lock,context,flags)                                \
 407         do {                                                           \
 408                 if (flags) drmGetLock(fd,context,flags);               \
 409                 else       DRM_LIGHT_LOCK(fd,lock,context);            \
 410         } while(0)
 411
 412 #define DRM_UNLOCK(fd,lock,context)                                    \
 413         do {                                                           \
 414                 DRM_CAS_RESULT(__ret);                                 \
 415                 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret);     \
 416                 if (__ret) drmUnlock(fd,context);                      \
 417         } while(0)
 418
 419                                 /* Simple spin locks */
 420 #define DRM_SPINLOCK(spin,val)                                         \
 421         do {                                                           \
 422             DRM_CAS_RESULT(__ret);                                     \
 423             do {                                                       \
 424                 DRM_CAS(spin,0,val,__ret);                             \
 425                 if (__ret) while ((spin)->lock);                       \
 426             } while (__ret);                                           \
 427         } while(0)
 428
 429 #define DRM_SPINLOCK_TAKE(spin,val)                                    \
 430         do {                                                           \
 431             DRM_CAS_RESULT(__ret);                                     \
 432             int  cur;                                                  \
 433             do {                                                       \
 434                 cur = (*spin).lock;                                    \
 435                 DRM_CAS(spin,cur,val,__ret);                           \
 436             } while (__ret);                                           \
 437         } while(0)
 438
 439 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret)                       \
 440         do {                                                           \
 441             int  __i;                                                  \
 442             __ret = 1;                                                 \
 443             for (__i = 0; __ret && __i < count; __i++) {               \
 444                 DRM_CAS(spin,0,val,__ret);                             \
 445                 if (__ret) for (;__i < count && (spin)->lock; __i++);  \
 446             }                                                          \
 447         } while(0)
 448
 449 #define DRM_SPINUNLOCK(spin,val)                                       \
 450         do {                                                           \
 451             DRM_CAS_RESULT(__ret);                                     \
 452             if ((*spin).lock == val) { /* else server stole lock */    \
 453                 do {                                                   \
 454                     DRM_CAS(spin,val,0,__ret);                         \
 455                 } while (__ret);                                       \
 456             }                                                          \
 457         } while(0)
 458
 459 /* General user-level programmer's API: unprivileged */
 460 extern int           drmAvailable(void);
 461 extern int           drmOpen(const char *name, const char *busid);
 462 extern int           drmClose(int fd);
 463 extern drmVersionPtr drmGetVersion(int fd);
 464 extern drmVersionPtr drmGetLibVersion(int fd);
 465 extern void          drmFreeVersion(drmVersionPtr);
 466 extern int           drmGetMagic(int fd, drmMagicPtr magic);
 467 extern char          *drmGetBusid(int fd);
 468 extern int           drmGetInterruptFromBusID(int fd, int busnum, int devnum,
 469                                               int funcnum);
 470 extern int           drmGetMap(int fd, int idx, drmHandle *offset,
 471                                drmSize *size, drmMapType *type,
 472                                drmMapFlags *flags, drmHandle *handle,
 473                                int *mtrr);
 474 extern int           drmGetClient(int fd, int idx, int *auth, int *pid,
 475                                   int *uid, unsigned long *magic,
 476                                   unsigned long *iocs);
 477 extern int           drmGetStats(int fd, drmStatsT *stats);
 478 extern int           drmCommandNone(int fd, unsigned long drmCommandIndex);
 479 extern int           drmCommandRead(int fd, unsigned long drmCommandIndex,
 480                                     void *data, unsigned long size);
 481 extern int           drmCommandWrite(int fd, unsigned long drmCommandIndex,
 482                                      void *data, unsigned long size);
 483 extern int           drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
 484                                          void *data, unsigned long size);
 485
 486 /* General user-level programmer's API: X server (root) only  */
 487 extern void          drmFreeBusid(const char *busid);
 488 extern int           drmSetBusid(int fd, const char *busid);
 489 extern int           drmAuthMagic(int fd, drmMagic magic);
 490 extern int           drmAddMap(int fd,
 491                                drmHandle offset,
 492                                drmSize size,
 493                                drmMapType type,
 494                                drmMapFlags flags,
 495                                drmHandlePtr handle);
 496 extern int           drmRmMap(int fd, drmHandle handle);
 497 extern int           drmAddContextPrivateMapping(int fd, drmContext ctx_id,
 498                                                  drmHandle handle);
 499
 500 extern int           drmAddBufs(int fd, int count, int size,
 501                                 drmBufDescFlags flags,
 502                                 int agp_offset);
 503 extern int           drmMarkBufs(int fd, double low, double high);
 504 extern int           drmCreateContext(int fd, drmContextPtr handle);
 505 extern int           drmSetContextFlags(int fd, drmContext context,
 506                                         drmContextFlags flags);
 507 extern int           drmGetContextFlags(int fd, drmContext context,
 508                                         drmContextFlagsPtr flags);
 509 extern int           drmAddContextTag(int fd, drmContext context, void *tag);
 510 extern int           drmDelContextTag(int fd, drmContext context);
 511 extern void          *drmGetContextTag(int fd, drmContext context);
 512 extern drmContextPtr drmGetReservedContextList(int fd, int *count);
 513 extern void          drmFreeReservedContextList(drmContextPtr);
 514 extern int           drmSwitchToContext(int fd, drmContext context);
 515 extern int           drmDestroyContext(int fd, drmContext handle);
 516 extern int           drmCreateDrawable(int fd, drmDrawablePtr handle);
 517 extern int           drmDestroyDrawable(int fd, drmDrawable handle);
 518 extern int           drmCtlInstHandler(int fd, int irq);
 519 extern int           drmCtlUninstHandler(int fd);
 520 extern int           drmInstallSIGIOHandler(int fd,
 521                                             void (*f)(int fd,
 522                                                       void *oldctx,
 523                                                       void *newctx));
 524 extern int           drmRemoveSIGIOHandler(int fd);
 525
 526 /* General user-level programmer's API: authenticated client and/or X */
 527 extern int           drmMap(int fd,
 528                             drmHandle handle,
 529                             drmSize size,
 530                             drmAddressPtr address);
 531 extern int           drmUnmap(drmAddress address, drmSize size);
 532 extern drmBufInfoPtr drmGetBufInfo(int fd);
 533 extern drmBufMapPtr  drmMapBufs(int fd);
 534 extern int           drmUnmapBufs(drmBufMapPtr bufs);
 535 extern int           drmDMA(int fd, drmDMAReqPtr request);
 536 extern int           drmFreeBufs(int fd, int count, int *list);
 537 extern int           drmGetLock(int fd,
 538                                 drmContext context,
 539                                 drmLockFlags flags);
 540 extern int           drmUnlock(int fd, drmContext context);
 541 extern int           drmFinish(int fd, int context, drmLockFlags flags);
 542 extern int           drmGetContextPrivateMapping(int fd, drmContext ctx_id,
 543                                                  drmHandlePtr handle);
 544
 545 /* AGP/GART support: X server (root) only */
 546 extern int           drmAgpAcquire(int fd);
 547 extern int           drmAgpRelease(int fd);
 548 extern int           drmAgpEnable(int fd, unsigned long mode);
 549 extern int           drmAgpAlloc(int fd, unsigned long size,
 550                                  unsigned long type, unsigned long *address,
 551                                  unsigned long *handle);
 552 extern int           drmAgpFree(int fd, unsigned long handle);
 553 extern int           drmAgpBind(int fd, unsigned long handle,
 554                                 unsigned long offset);
 555 extern int           drmAgpUnbind(int fd, unsigned long handle);
 556
 557 /* AGP/GART info: authenticated client and/or X */
 558 extern int           drmAgpVersionMajor(int fd);
 559 extern int           drmAgpVersionMinor(int fd);
 560 extern unsigned long drmAgpGetMode(int fd);
 561 extern unsigned long drmAgpBase(int fd); /* Physical location */
 562 extern unsigned long drmAgpSize(int fd); /* Bytes */
 563 extern unsigned long drmAgpMemoryUsed(int fd);
 564 extern unsigned long drmAgpMemoryAvail(int fd);
 565 extern unsigned int  drmAgpVendorId(int fd);
 566 extern unsigned int  drmAgpDeviceId(int fd);
 567
 568 /* PCI scatter/gather support: X server (root) only */
 569 extern int           drmScatterGatherAlloc(int fd, unsigned long size,
 570                                            unsigned long *handle);
 571 extern int           drmScatterGatherFree(int fd, unsigned long handle);
 572
 573 extern int           drmWaitVBlank(int fd, drmVBlankPtr vbl);
 574
 575 /* Support routines */
 576 extern int           drmError(int err, const char *label);
 577 extern void          *drmMalloc(int size);
 578 extern void          drmFree(void *pt);
 579
 580 /* Hash table routines */
 581 extern void *drmHashCreate(void);
 582 extern int  drmHashDestroy(void *t);
 583 extern int  drmHashLookup(void *t, unsigned long key, void **value);
 584 extern int  drmHashInsert(void *t, unsigned long key, void *value);
 585 extern int  drmHashDelete(void *t, unsigned long key);
 586 extern int  drmHashFirst(void *t, unsigned long *key, void **value);
 587 extern int  drmHashNext(void *t, unsigned long *key, void **value);
 588
 589 /* PRNG routines */
 590 extern void          *drmRandomCreate(unsigned long seed);
 591 extern int           drmRandomDestroy(void *state);
 592 extern unsigned long drmRandom(void *state);
 593 extern double        drmRandomDouble(void *state);
 594
 595 /* Skip list routines */
 596
 597 extern void *drmSLCreate(void);
 598 extern int  drmSLDestroy(void *l);
 599 extern int  drmSLLookup(void *l, unsigned long key, void **value);
 600 extern int  drmSLInsert(void *l, unsigned long key, void *value);
 601 extern int  drmSLDelete(void *l, unsigned long key);
 602 extern int  drmSLNext(void *l, unsigned long *key, void **value);
 603 extern int  drmSLFirst(void *l, unsigned long *key, void **value);
 604 extern void drmSLDump(void *l);
 605 extern int  drmSLLookupNeighbors(void *l, unsigned long key,
 606                                  unsigned long *prev_key, void **prev_value,
 607                                  unsigned long *next_key, void **next_value);
 608
 609 #endif