libdrm/xf86drm.h

   1 /**
   2  * \file xf86drm.h
   3  * OS-independent header for DRM user-level library interface.
   4  *
   5  * \author Rickard E. (Rik) Faith <faith@valinux.com>
   6  */
   7
   8 /*
   9  * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
  10  * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
  11  * All Rights Reserved.
  12  *
  13  * Permission is hereby granted, free of charge, to any person obtaining a
  14  * copy of this software and associated documentation files (the "Software"),
  15  * to deal in the Software without restriction, including without limitation
  16  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  17  * and/or sell copies of the Software, and to permit persons to whom the
  18  * Software is furnished to do so, subject to the following conditions:
  19  *
  20  * The above copyright notice and this permission notice (including the next
  21  * paragraph) shall be included in all copies or substantial portions of the
  22  * Software.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  25  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  26  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  27  * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  28  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  29  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  30  * DEALINGS IN THE SOFTWARE.
  31  *
  32  */
  33
  34 /* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/xf86drm.h,v 1.26 2003/08/16 19:26:37 dawes Exp $ */
  35
  36 #ifndef _XF86DRM_H_
  37 #define _XF86DRM_H_
  38
  39 #include <drm.h>
  40
  41                                 /* Defaults, if nothing set in xf86config */
  42 #define DRM_DEV_UID      0
  43 #define DRM_DEV_GID      0
  44 /* Default /dev/dri directory permissions 0755 */
  45 #define DRM_DEV_DIRMODE         \
  46         (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
  47 #define DRM_DEV_MODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
  48
  49 #define DRM_DIR_NAME  "/dev/dri"
  50 #define DRM_DEV_NAME  "%s/card%d"
  51 #define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */
  52
  53 #define DRM_ERR_NO_DEVICE  (-1001)
  54 #define DRM_ERR_NO_ACCESS  (-1002)
  55 #define DRM_ERR_NOT_ROOT   (-1003)
  56 #define DRM_ERR_INVALID    (-1004)
  57 #define DRM_ERR_NO_FD      (-1005)
  58
  59 #define DRM_AGP_NO_HANDLE 0
  60
  61 typedef unsigned int  drmSize,     *drmSizePtr;     /**< For mapped regions */
  62 typedef void          *drmAddress, **drmAddressPtr; /**< For mapped regions */
  63
  64 /**
  65  * Driver version information.
  66  *
  67  * \sa drmGetVersion() and drmSetVersion().
  68  */
  69 typedef struct _drmVersion {
  70     int     version_major;        /**< Major version */
  71     int     version_minor;        /**< Minor version */
  72     int     version_patchlevel;   /**< Patch level */
  73     int     name_len;             /**< Length of name buffer */
  74     char    *name;                /**< Name of driver */
  75     int     date_len;             /**< Length of date buffer */
  76     char    *date;                /**< User-space buffer to hold date */
  77     int     desc_len;             /**< Length of desc buffer */
  78     char    *desc;                /**< User-space buffer to hold desc */
  79 } drmVersion, *drmVersionPtr;
  80
  81 typedef struct _drmStats {
  82     unsigned long count;             /**< Number of data */
  83     struct {
  84         unsigned long value;         /**< Value from kernel */
  85         const char    *long_format;  /**< Suggested format for long_name */
  86         const char    *long_name;    /**< Long name for value */
  87         const char    *rate_format;  /**< Suggested format for rate_name */
  88         const char    *rate_name;    /**< Short name for value per second */
  89         int           isvalue;       /**< True if value (vs. counter) */
  90         const char    *mult_names;   /**< Multiplier names (e.g., "KGM") */
  91         int           mult;          /**< Multiplier value (e.g., 1024) */
  92         int           verbose;       /**< Suggest only in verbose output */
  93     } data[15];
  94 } drmStatsT;
  95
  96
  97                                 /* All of these enums *MUST* match with the
  98                                    kernel implementation -- so do *NOT*
  99                                    change them!  (The drmlib implementation
 100                                    will just copy the flags instead of
 101                                    translating them.) */
 102 typedef enum {
 103     DRM_FRAME_BUFFER    = 0,      /**< WC, no caching, no core dump */
 104     DRM_REGISTERS       = 1,      /**< no caching, no core dump */
 105     DRM_SHM             = 2,      /**< shared, cached */
 106     DRM_AGP             = 3,      /**< AGP/GART */
 107     DRM_SCATTER_GATHER  = 4,      /**< PCI scatter/gather */
 108     DRM_CONSISTENT      = 5       /**< PCI consistent */
 109 } drmMapType;
 110
 111 typedef enum {
 112     DRM_RESTRICTED      = 0x0001, /**< Cannot be mapped to client-virtual */
 113     DRM_READ_ONLY       = 0x0002, /**< Read-only in client-virtual */
 114     DRM_LOCKED          = 0x0004, /**< Physical pages locked */
 115     DRM_KERNEL          = 0x0008, /**< Kernel requires access */
 116     DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
 117     DRM_CONTAINS_LOCK   = 0x0020, /**< SHM page that contains lock */
 118     DRM_REMOVABLE       = 0x0040  /**< Removable mapping */
 119 } drmMapFlags;
 120
 121 /**
 122  * \warning These values *MUST* match drm.h
 123  */
 124 typedef enum {
 125     /** \name Flags for DMA buffer dispatch */
 126     /*@{*/
 127     DRM_DMA_BLOCK        = 0x01, /**<
 128                                   * Block until buffer dispatched.
 129                                   *
 130                                   * \note the buffer may not yet have been
 131                                   * processed by the hardware -- getting a
 132                                   * hardware lock with the hardware quiescent
 133                                   * will ensure that the buffer has been
 134                                   * processed.
 135                                   */
 136     DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
 137     DRM_DMA_PRIORITY     = 0x04, /**< High priority dispatch */
 138     /*@}*/
 139
 140     /** \name Flags for DMA buffer request */
 141     /*@{*/
 142     DRM_DMA_WAIT         = 0x10, /**< Wait for free buffers */
 143     DRM_DMA_SMALLER_OK   = 0x20, /**< Smaller-than-requested buffers OK */
 144     DRM_DMA_LARGER_OK    = 0x40  /**< Larger-than-requested buffers OK */
 145     /*@}*/
 146 } drmDMAFlags;
 147
 148 typedef enum {
 149     DRM_PAGE_ALIGN       = 0x01,
 150     DRM_AGP_BUFFER       = 0x02,
 151     DRM_SG_BUFFER        = 0x04
 152 } drmBufDescFlags;
 153
 154 typedef enum {
 155     DRM_LOCK_READY      = 0x01, /**< Wait until hardware is ready for DMA */
 156     DRM_LOCK_QUIESCENT  = 0x02, /**< Wait until hardware quiescent */
 157     DRM_LOCK_FLUSH      = 0x04, /**< Flush this context's DMA queue first */
 158     DRM_LOCK_FLUSH_ALL  = 0x08, /**< Flush all DMA queues first */
 159                                 /* These *HALT* flags aren't supported yet
 160                                    -- they will be used to support the
 161                                    full-screen DGA-like mode. */
 162     DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
 163     DRM_HALT_CUR_QUEUES = 0x20  /**< Halt all current queues */
 164 } drmLockFlags;
 165
 166 typedef enum {
 167     DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
 168                                      never swapped. */
 169     DRM_CONTEXT_2DONLY    = 0x02  /**< This context is for 2D rendering only. */
 170 } drm_context_tFlags, *drm_context_tFlagsPtr;
 171
 172 typedef struct _drmBufDesc {
 173     int              count;       /**< Number of buffers of this size */
 174     int              size;        /**< Size in bytes */
 175     int              low_mark;    /**< Low water mark */
 176     int              high_mark;   /**< High water mark */
 177 } drmBufDesc, *drmBufDescPtr;
 178
 179 typedef struct _drmBufInfo {
 180     int              count;       /**< Number of buffers described in list */
 181     drmBufDescPtr    list;        /**< List of buffer descriptions */
 182 } drmBufInfo, *drmBufInfoPtr;
 183
 184 typedef struct _drmBuf {
 185     int              idx;         /**< Index into the master buffer list */
 186     int              total;       /**< Buffer size */
 187     int              used;        /**< Amount of buffer in use (for DMA) */
 188     drmAddress       address;     /**< Address */
 189 } drmBuf, *drmBufPtr;
 190
 191 /**
 192  * Buffer mapping information.
 193  *
 194  * Used by drmMapBufs() and drmUnmapBufs() to store information about the
 195  * mapped buffers.
 196  */
 197 typedef struct _drmBufMap {
 198     int              count;       /**< Number of buffers mapped */
 199     drmBufPtr        list;        /**< Buffers */
 200 } drmBufMap, *drmBufMapPtr;
 201
 202 typedef struct _drmLock {
 203     volatile unsigned int lock;
 204     char                      padding[60];
 205     /* This is big enough for most current (and future?) architectures:
 206        DEC Alpha:              32 bytes
 207        Intel Merced:           ?
 208        Intel P5/PPro/PII/PIII: 32 bytes
 209        Intel StrongARM:        32 bytes
 210        Intel i386/i486:        16 bytes
 211        MIPS:                   32 bytes (?)
 212        Motorola 68k:           16 bytes
 213        Motorola PowerPC:       32 bytes
 214        Sun SPARC:              32 bytes
 215     */
 216 } drmLock, *drmLockPtr;
 217
 218 /**
 219  * Indices here refer to the offset into
 220  * list in drmBufInfo
 221  */
 222 typedef struct _drmDMAReq {
 223     drm_context_t    context;     /**< Context handle */
 224     int           send_count;     /**< Number of buffers to send */
 225     int           *send_list;     /**< List of handles to buffers */
 226     int           *send_sizes;    /**< Lengths of data to send, in bytes */
 227     drmDMAFlags   flags;          /**< Flags */
 228     int           request_count;  /**< Number of buffers requested */
 229     int           request_size;   /**< Desired size of buffers requested */
 230     int           *request_list;  /**< Buffer information */
 231     int           *request_sizes; /**< Minimum acceptable sizes */
 232     int           granted_count;  /**< Number of buffers granted at this size */
 233 } drmDMAReq, *drmDMAReqPtr;
 234
 235 typedef struct _drmRegion {
 236     drm_handle_t     handle;
 237     unsigned int  offset;
 238     drmSize       size;
 239     drmAddress    map;
 240 } drmRegion, *drmRegionPtr;
 241
 242 typedef struct _drmTextureRegion {
 243     unsigned char next;
 244     unsigned char prev;
 245     unsigned char in_use;
 246     unsigned char padding;      /**< Explicitly pad this out */
 247     unsigned int  age;
 248 } drmTextureRegion, *drmTextureRegionPtr;
 249
 250
 251 typedef enum {
 252     DRM_VBLANK_ABSOLUTE = 0x0,  /**< Wait for specific vblank sequence number */
 253     DRM_VBLANK_RELATIVE = 0x1,  /**< Wait for given number of vblanks */
 254     DRM_VBLANK_SIGNAL   = 0x40000000    /* Send signal instead of blocking */
 255 } drmVBlankSeqType;
 256
 257 typedef struct _drmVBlankReq {
 258         drmVBlankSeqType type;
 259         unsigned int sequence;
 260         unsigned long signal;
 261 } drmVBlankReq, *drmVBlankReqPtr;
 262
 263 typedef struct _drmVBlankReply {
 264         drmVBlankSeqType type;
 265         unsigned int sequence;
 266         long tval_sec;
 267         long tval_usec;
 268 } drmVBlankReply, *drmVBlankReplyPtr;
 269
 270 typedef union _drmVBlank {
 271         drmVBlankReq request;
 272         drmVBlankReply reply;
 273 } drmVBlank, *drmVBlankPtr;
 274
 275 typedef struct _drmSetVersion {
 276         int drm_di_major;
 277         int drm_di_minor;
 278         int drm_dd_major;
 279         int drm_dd_minor;
 280 } drmSetVersion, *drmSetVersionPtr;
 281
 282
 283 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
 284
 285 #define DRM_LOCK_HELD  0x80000000U /**< Hardware lock is held */
 286 #define DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */
 287
 288 #if defined(__GNUC__) && (__GNUC__ >= 2)
 289 # if defined(__i386) || defined(__AMD64__)
 290                                 /* Reflect changes here to drmP.h */
 291 #define DRM_CAS(lock,old,new,__ret)                                    \
 292         do {                                                           \
 293                 int __dummy;    /* Can't mark eax as clobbered */      \
 294                 __asm__ __volatile__(                                  \
 295                         "lock ; cmpxchg %4,%1\n\t"                     \
 296                         "setnz %0"                                     \
 297                         : "=d" (__ret),                                \
 298                           "=m" (__drm_dummy_lock(lock)),               \
 299                           "=a" (__dummy)                               \
 300                         : "2" (old),                                   \
 301                           "r" (new));                                  \
 302         } while (0)
 303
 304 #elif defined(__alpha__)
 305
 306 #define DRM_CAS(lock, old, new, ret)            \
 307         do {                                    \
 308                 int old32;                      \
 309                 int cur32;                      \
 310                 __asm__ __volatile__(           \
 311                 "       mb\n"                   \
 312                 "       zap   %4, 0xF0, %0\n"   \
 313                 "       ldl_l %1, %2\n"         \
 314                 "       zap   %1, 0xF0, %1\n"   \
 315                 "       cmpeq %0, %1, %1\n"     \
 316                 "       beq   %1, 1f\n"         \
 317                 "       bis   %5, %5, %1\n"     \
 318                 "       stl_c %1, %2\n"         \
 319                 "1:     xor   %1, 1, %1\n"      \
 320                 "       stl   %1, %3"           \
 321                 : "+r" (old32),                 \
 322                   "+&r" (cur32),                \
 323                    "=m" (__drm_dummy_lock(lock)),\
 324                    "=m" (ret)                   \
 325                 : "r" (old),                    \
 326                   "r" (new));                   \
 327         } while(0)
 328
 329 #elif defined(__sparc__)
 330
 331 #define DRM_CAS(lock,old,new,__ret)                             \
 332 do {    register unsigned int __old __asm("o0");                \
 333         register unsigned int __new __asm("o1");                \
 334         register volatile unsigned int *__lock __asm("o2");     \
 335         __old = old;                                            \
 336         __new = new;                                            \
 337         __lock = (volatile unsigned int *)lock;                 \
 338         __asm__ __volatile__(                                   \
 339                 /*"cas [%2], %3, %0"*/                          \
 340                 ".word 0xd3e29008\n\t"                          \
 341                 /*"membar #StoreStore | #StoreLoad"*/           \
 342                 ".word 0x8143e00a"                              \
 343                 : "=&r" (__new)                                 \
 344                 : "0" (__new),                                  \
 345                   "r" (__lock),                                 \
 346                   "r" (__old)                                   \
 347                 : "memory");                                    \
 348         __ret = (__new != __old);                               \
 349 } while(0)
 350
 351 #elif defined(__ia64__)
 352
 353 #ifdef __INTEL_COMPILER
 354 /* this currently generates bad code (missing stop bits)... */
 355 #include <ia64intrin.h>
 356
 357 #define DRM_CAS(lock,old,new,__ret)                                           \
 358         do {                                                                  \
 359                 unsigned long __result, __old = (old) & 0xffffffff;             \
 360                 __mf();                                                         \
 361                 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
 362                 __ret = (__result) != (__old);                                  \
 363 /*              __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
 364                                                      (old), (new))            \
 365                          != (old));                                           */\
 366         } while (0)
 367
 368 #else
 369 #define DRM_CAS(lock,old,new,__ret)                                       \
 370         do {                                                              \
 371                 unsigned int __result, __old = (old);                     \
 372                 __asm__ __volatile__(                                     \
 373                         "mf\n"                                            \
 374                         "mov ar.ccv=%2\n"                                 \
 375                         ";;\n"                                            \
 376                         "cmpxchg4.acq %0=%1,%3,ar.ccv"                    \
 377                         : "=r" (__result), "=m" (__drm_dummy_lock(lock))  \
 378                         : "r" ((unsigned long)__old), "r" (new)                   \
 379                         : "memory");                                      \
 380                 __ret = (__result) != (__old);                            \
 381         } while (0)
 382
 383 #endif
 384
 385 #elif defined(__powerpc__)
 386
 387 #define DRM_CAS(lock,old,new,__ret)                     \
 388         do {                                            \
 389                 __asm__ __volatile__(                   \
 390                         "sync;"                         \
 391                         "0:    lwarx %0,0,%1;"          \
 392                         "      xor. %0,%3,%0;"          \
 393                         "      bne 1f;"                 \
 394                         "      stwcx. %2,0,%1;"         \
 395                         "      bne- 0b;"                \
 396                         "1:    "                        \
 397                         "sync;"                         \
 398                 : "=&r"(__ret)                          \
 399                 : "r"(lock), "r"(new), "r"(old)         \
 400                 : "cr0", "memory");                     \
 401         } while (0)
 402
 403 #endif /* architecture */
 404 #endif /* __GNUC__ >= 2 */
 405
 406 #ifndef DRM_CAS
 407 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
 408 #endif
 409
 410 #if defined(__alpha__) || defined(__powerpc__)
 411 #define DRM_CAS_RESULT(_result)         int _result
 412 #else
 413 #define DRM_CAS_RESULT(_result)         char _result
 414 #endif
 415
 416 #define DRM_LIGHT_LOCK(fd,lock,context)                                \
 417         do {                                                           \
 418                 DRM_CAS_RESULT(__ret);                                 \
 419                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 420                 if (__ret) drmGetLock(fd,context,0);                   \
 421         } while(0)
 422
 423                                 /* This one counts fast locks -- for
 424                                    benchmarking only. */
 425 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count)                    \
 426         do {                                                           \
 427                 DRM_CAS_RESULT(__ret);                                 \
 428                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 429                 if (__ret) drmGetLock(fd,context,0);                   \
 430                 else       ++count;                                    \
 431         } while(0)
 432
 433 #define DRM_LOCK(fd,lock,context,flags)                                \
 434         do {                                                           \
 435                 if (flags) drmGetLock(fd,context,flags);               \
 436                 else       DRM_LIGHT_LOCK(fd,lock,context);            \
 437         } while(0)
 438
 439 #define DRM_UNLOCK(fd,lock,context)                                    \
 440         do {                                                           \
 441                 DRM_CAS_RESULT(__ret);                                 \
 442                 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret);     \
 443                 if (__ret) drmUnlock(fd,context);                      \
 444         } while(0)
 445
 446                                 /* Simple spin locks */
 447 #define DRM_SPINLOCK(spin,val)                                         \
 448         do {                                                           \
 449             DRM_CAS_RESULT(__ret);                                     \
 450             do {                                                       \
 451                 DRM_CAS(spin,0,val,__ret);                             \
 452                 if (__ret) while ((spin)->lock);                       \
 453             } while (__ret);                                           \
 454         } while(0)
 455
 456 #define DRM_SPINLOCK_TAKE(spin,val)                                    \
 457         do {                                                           \
 458             DRM_CAS_RESULT(__ret);                                     \
 459             int  cur;                                                  \
 460             do {                                                       \
 461                 cur = (*spin).lock;                                    \
 462                 DRM_CAS(spin,cur,val,__ret);                           \
 463             } while (__ret);                                           \
 464         } while(0)
 465
 466 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret)                       \
 467         do {                                                           \
 468             int  __i;                                                  \
 469             __ret = 1;                                                 \
 470             for (__i = 0; __ret && __i < count; __i++) {               \
 471                 DRM_CAS(spin,0,val,__ret);                             \
 472                 if (__ret) for (;__i < count && (spin)->lock; __i++);  \
 473             }                                                          \
 474         } while(0)
 475
 476 #define DRM_SPINUNLOCK(spin,val)                                       \
 477         do {                                                           \
 478             DRM_CAS_RESULT(__ret);                                     \
 479             if ((*spin).lock == val) { /* else server stole lock */    \
 480                 do {                                                   \
 481                     DRM_CAS(spin,val,0,__ret);                         \
 482                 } while (__ret);                                       \
 483             }                                                          \
 484         } while(0)
 485
 486 /* General user-level programmer's API: unprivileged */
 487 extern int           drmAvailable(void);
 488 extern int           drmOpen(const char *name, const char *busid);
 489 extern int           drmClose(int fd);
 490 extern drmVersionPtr drmGetVersion(int fd);
 491 extern drmVersionPtr drmGetLibVersion(int fd);
 492 extern void          drmFreeVersion(drmVersionPtr);
 493 extern int           drmGetMagic(int fd, drm_magic_t * magic);
 494 extern char          *drmGetBusid(int fd);
 495 extern int           drmGetInterruptFromBusID(int fd, int busnum, int devnum,
 496                                               int funcnum);
 497 extern int           drmGetMap(int fd, int idx, drm_handle_t *offset,
 498                                drmSize *size, drmMapType *type,
 499                                drmMapFlags *flags, drm_handle_t *handle,
 500                                int *mtrr);
 501 extern int           drmGetClient(int fd, int idx, int *auth, int *pid,
 502                                   int *uid, unsigned long *magic,
 503                                   unsigned long *iocs);
 504 extern int           drmGetStats(int fd, drmStatsT *stats);
 505 extern int           drmSetInterfaceVersion(int fd, drmSetVersion *version);
 506 extern int           drmCommandNone(int fd, unsigned long drmCommandIndex);
 507 extern int           drmCommandRead(int fd, unsigned long drmCommandIndex,
 508                                     void *data, unsigned long size);
 509 extern int           drmCommandWrite(int fd, unsigned long drmCommandIndex,
 510                                      void *data, unsigned long size);
 511 extern int           drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
 512                                          void *data, unsigned long size);
 513
 514 /* General user-level programmer's API: X server (root) only  */
 515 extern void          drmFreeBusid(const char *busid);
 516 extern int           drmSetBusid(int fd, const char *busid);
 517 extern int           drmAuthMagic(int fd, drm_magic_t magic);
 518 extern int           drmAddMap(int fd,
 519                                drm_handle_t offset,
 520                                drmSize size,
 521                                drmMapType type,
 522                                drmMapFlags flags,
 523                                drm_handle_t * handle);
 524 extern int           drmRmMap(int fd, drm_handle_t handle);
 525 extern int           drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
 526                                                  drm_handle_t handle);
 527
 528 extern int           drmAddBufs(int fd, int count, int size,
 529                                 drmBufDescFlags flags,
 530                                 int agp_offset);
 531 extern int           drmMarkBufs(int fd, double low, double high);
 532 extern int           drmCreateContext(int fd, drm_context_t * handle);
 533 extern int           drmSetContextFlags(int fd, drm_context_t context,
 534                                         drm_context_tFlags flags);
 535 extern int           drmGetContextFlags(int fd, drm_context_t context,
 536                                         drm_context_tFlagsPtr flags);
 537 extern int           drmAddContextTag(int fd, drm_context_t context, void *tag);
 538 extern int           drmDelContextTag(int fd, drm_context_t context);
 539 extern void          *drmGetContextTag(int fd, drm_context_t context);
 540 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
 541 extern void          drmFreeReservedContextList(drm_context_t *);
 542 extern int           drmSwitchToContext(int fd, drm_context_t context);
 543 extern int           drmDestroyContext(int fd, drm_context_t handle);
 544 extern int           drmCreateDrawable(int fd, drm_drawable_t * handle);
 545 extern int           drmDestroyDrawable(int fd, drm_drawable_t handle);
 546 extern int           drmCtlInstHandler(int fd, int irq);
 547 extern int           drmCtlUninstHandler(int fd);
 548 extern int           drmInstallSIGIOHandler(int fd,
 549                                             void (*f)(int fd,
 550                                                       void *oldctx,
 551                                                       void *newctx));
 552 extern int           drmRemoveSIGIOHandler(int fd);
 553
 554 /* General user-level programmer's API: authenticated client and/or X */
 555 extern int           drmMap(int fd,
 556                             drm_handle_t handle,
 557                             drmSize size,
 558                             drmAddressPtr address);
 559 extern int           drmUnmap(drmAddress address, drmSize size);
 560 extern drmBufInfoPtr drmGetBufInfo(int fd);
 561 extern drmBufMapPtr  drmMapBufs(int fd);
 562 extern int           drmUnmapBufs(drmBufMapPtr bufs);
 563 extern int           drmDMA(int fd, drmDMAReqPtr request);
 564 extern int           drmFreeBufs(int fd, int count, int *list);
 565 extern int           drmGetLock(int fd,
 566                                 drm_context_t context,
 567                                 drmLockFlags flags);
 568 extern int           drmUnlock(int fd, drm_context_t context);
 569 extern int           drmFinish(int fd, int context, drmLockFlags flags);
 570 extern int           drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
 571                                                  drm_handle_t * handle);
 572
 573 /* AGP/GART support: X server (root) only */
 574 extern int           drmAgpAcquire(int fd);
 575 extern int           drmAgpRelease(int fd);
 576 extern int           drmAgpEnable(int fd, unsigned long mode);
 577 extern int           drmAgpAlloc(int fd, unsigned long size,
 578                                  unsigned long type, unsigned long *address,
 579                                  unsigned long *handle);
 580 extern int           drmAgpFree(int fd, unsigned long handle);
 581 extern int           drmAgpBind(int fd, unsigned long handle,
 582                                 unsigned long offset);
 583 extern int           drmAgpUnbind(int fd, unsigned long handle);
 584
 585 /* AGP/GART info: authenticated client and/or X */
 586 extern int           drmAgpVersionMajor(int fd);
 587 extern int           drmAgpVersionMinor(int fd);
 588 extern unsigned long drmAgpGetMode(int fd);
 589 extern unsigned long drmAgpBase(int fd); /* Physical location */
 590 extern unsigned long drmAgpSize(int fd); /* Bytes */
 591 extern unsigned long drmAgpMemoryUsed(int fd);
 592 extern unsigned long drmAgpMemoryAvail(int fd);
 593 extern unsigned int  drmAgpVendorId(int fd);
 594 extern unsigned int  drmAgpDeviceId(int fd);
 595
 596 /* PCI scatter/gather support: X server (root) only */
 597 extern int           drmScatterGatherAlloc(int fd, unsigned long size,
 598                                            unsigned long *handle);
 599 extern int           drmScatterGatherFree(int fd, unsigned long handle);
 600
 601 extern int           drmWaitVBlank(int fd, drmVBlankPtr vbl);
 602
 603 /* Support routines */
 604 extern int           drmError(int err, const char *label);
 605 extern void          *drmMalloc(int size);
 606 extern void          drmFree(void *pt);
 607
 608 /* Hash table routines */
 609 extern void *drmHashCreate(void);
 610 extern int  drmHashDestroy(void *t);
 611 extern int  drmHashLookup(void *t, unsigned long key, void **value);
 612 extern int  drmHashInsert(void *t, unsigned long key, void *value);
 613 extern int  drmHashDelete(void *t, unsigned long key);
 614 extern int  drmHashFirst(void *t, unsigned long *key, void **value);
 615 extern int  drmHashNext(void *t, unsigned long *key, void **value);
 616
 617 /* PRNG routines */
 618 extern void          *drmRandomCreate(unsigned long seed);
 619 extern int           drmRandomDestroy(void *state);
 620 extern unsigned long drmRandom(void *state);
 621 extern double        drmRandomDouble(void *state);
 622
 623 /* Skip list routines */
 624
 625 extern void *drmSLCreate(void);
 626 extern int  drmSLDestroy(void *l);
 627 extern int  drmSLLookup(void *l, unsigned long key, void **value);
 628 extern int  drmSLInsert(void *l, unsigned long key, void *value);
 629 extern int  drmSLDelete(void *l, unsigned long key);
 630 extern int  drmSLNext(void *l, unsigned long *key, void **value);
 631 extern int  drmSLFirst(void *l, unsigned long *key, void **value);
 632 extern void drmSLDump(void *l);
 633 extern int  drmSLLookupNeighbors(void *l, unsigned long key,
 634                                  unsigned long *prev_key, void **prev_value,
 635                                  unsigned long *next_key, void **next_value);
 636
 637 #endif