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 <stdarg.h>
  40 #include <sys/types.h>
  41 #include <drm.h>
  42
  43                                 /* Defaults, if nothing set in xf86config */
  44 #define DRM_DEV_UID      0
  45 #define DRM_DEV_GID      0
  46 /* Default /dev/dri directory permissions 0755 */
  47 #define DRM_DEV_DIRMODE         \
  48         (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
  49 #define DRM_DEV_MODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
  50
  51 #define DRM_DIR_NAME  "/dev/dri"
  52 #define DRM_DEV_NAME  "%s/card%d"
  53 #define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */
  54
  55 #define DRM_ERR_NO_DEVICE  (-1001)
  56 #define DRM_ERR_NO_ACCESS  (-1002)
  57 #define DRM_ERR_NOT_ROOT   (-1003)
  58 #define DRM_ERR_INVALID    (-1004)
  59 #define DRM_ERR_NO_FD      (-1005)
  60
  61 #define DRM_AGP_NO_HANDLE 0
  62
  63 typedef unsigned int  drmSize,     *drmSizePtr;     /**< For mapped regions */
  64 typedef void          *drmAddress, **drmAddressPtr; /**< For mapped regions */
  65
  66 typedef struct _drmServerInfo {
  67   int (*debug_print)(const char *format, va_list ap);
  68   int (*load_module)(const char *name);
  69   void (*get_perms)(gid_t *, mode_t *);
  70 } drmServerInfo, *drmServerInfoPtr;
  71
  72 typedef struct drmHashEntry {
  73     int      fd;
  74     void     (*f)(int, void *, void *);
  75     void     *tagTable;
  76 } drmHashEntry;
  77
  78 extern void *drmGetHashTable(void);
  79 extern drmHashEntry *drmGetEntry(int fd);
  80
  81 /**
  82  * Driver version information.
  83  *
  84  * \sa drmGetVersion() and drmSetVersion().
  85  */
  86 typedef struct _drmVersion {
  87     int     version_major;        /**< Major version */
  88     int     version_minor;        /**< Minor version */
  89     int     version_patchlevel;   /**< Patch level */
  90     int     name_len;             /**< Length of name buffer */
  91     char    *name;                /**< Name of driver */
  92     int     date_len;             /**< Length of date buffer */
  93     char    *date;                /**< User-space buffer to hold date */
  94     int     desc_len;             /**< Length of desc buffer */
  95     char    *desc;                /**< User-space buffer to hold desc */
  96 } drmVersion, *drmVersionPtr;
  97
  98 typedef struct _drmStats {
  99     unsigned long count;             /**< Number of data */
 100     struct {
 101         unsigned long value;         /**< Value from kernel */
 102         const char    *long_format;  /**< Suggested format for long_name */
 103         const char    *long_name;    /**< Long name for value */
 104         const char    *rate_format;  /**< Suggested format for rate_name */
 105         const char    *rate_name;    /**< Short name for value per second */
 106         int           isvalue;       /**< True if value (vs. counter) */
 107         const char    *mult_names;   /**< Multiplier names (e.g., "KGM") */
 108         int           mult;          /**< Multiplier value (e.g., 1024) */
 109         int           verbose;       /**< Suggest only in verbose output */
 110     } data[15];
 111 } drmStatsT;
 112
 113
 114                                 /* All of these enums *MUST* match with the
 115                                    kernel implementation -- so do *NOT*
 116                                    change them!  (The drmlib implementation
 117                                    will just copy the flags instead of
 118                                    translating them.) */
 119 typedef enum {
 120     DRM_FRAME_BUFFER    = 0,      /**< WC, no caching, no core dump */
 121     DRM_REGISTERS       = 1,      /**< no caching, no core dump */
 122     DRM_SHM             = 2,      /**< shared, cached */
 123     DRM_AGP             = 3,      /**< AGP/GART */
 124     DRM_SCATTER_GATHER  = 4,      /**< PCI scatter/gather */
 125     DRM_CONSISTENT      = 5       /**< PCI consistent */
 126 } drmMapType;
 127
 128 typedef enum {
 129     DRM_RESTRICTED      = 0x0001, /**< Cannot be mapped to client-virtual */
 130     DRM_READ_ONLY       = 0x0002, /**< Read-only in client-virtual */
 131     DRM_LOCKED          = 0x0004, /**< Physical pages locked */
 132     DRM_KERNEL          = 0x0008, /**< Kernel requires access */
 133     DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
 134     DRM_CONTAINS_LOCK   = 0x0020, /**< SHM page that contains lock */
 135     DRM_REMOVABLE       = 0x0040  /**< Removable mapping */
 136 } drmMapFlags;
 137
 138 /**
 139  * \warning These values *MUST* match drm.h
 140  */
 141 typedef enum {
 142     /** \name Flags for DMA buffer dispatch */
 143     /*@{*/
 144     DRM_DMA_BLOCK        = 0x01, /**<
 145                                   * Block until buffer dispatched.
 146                                   *
 147                                   * \note the buffer may not yet have been
 148                                   * processed by the hardware -- getting a
 149                                   * hardware lock with the hardware quiescent
 150                                   * will ensure that the buffer has been
 151                                   * processed.
 152                                   */
 153     DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
 154     DRM_DMA_PRIORITY     = 0x04, /**< High priority dispatch */
 155     /*@}*/
 156
 157     /** \name Flags for DMA buffer request */
 158     /*@{*/
 159     DRM_DMA_WAIT         = 0x10, /**< Wait for free buffers */
 160     DRM_DMA_SMALLER_OK   = 0x20, /**< Smaller-than-requested buffers OK */
 161     DRM_DMA_LARGER_OK    = 0x40  /**< Larger-than-requested buffers OK */
 162     /*@}*/
 163 } drmDMAFlags;
 164
 165 typedef enum {
 166     DRM_PAGE_ALIGN       = 0x01,
 167     DRM_AGP_BUFFER       = 0x02,
 168     DRM_SG_BUFFER        = 0x04,
 169     DRM_FB_BUFFER        = 0x08,
 170     DRM_PCI_BUFFER_RO    = 0x10
 171 } drmBufDescFlags;
 172
 173 typedef enum {
 174     DRM_LOCK_READY      = 0x01, /**< Wait until hardware is ready for DMA */
 175     DRM_LOCK_QUIESCENT  = 0x02, /**< Wait until hardware quiescent */
 176     DRM_LOCK_FLUSH      = 0x04, /**< Flush this context's DMA queue first */
 177     DRM_LOCK_FLUSH_ALL  = 0x08, /**< Flush all DMA queues first */
 178                                 /* These *HALT* flags aren't supported yet
 179                                    -- they will be used to support the
 180                                    full-screen DGA-like mode. */
 181     DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
 182     DRM_HALT_CUR_QUEUES = 0x20  /**< Halt all current queues */
 183 } drmLockFlags;
 184
 185 typedef enum {
 186     DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
 187                                      never swapped. */
 188     DRM_CONTEXT_2DONLY    = 0x02  /**< This context is for 2D rendering only. */
 189 } drm_context_tFlags, *drm_context_tFlagsPtr;
 190
 191 typedef struct _drmBufDesc {
 192     int              count;       /**< Number of buffers of this size */
 193     int              size;        /**< Size in bytes */
 194     int              low_mark;    /**< Low water mark */
 195     int              high_mark;   /**< High water mark */
 196 } drmBufDesc, *drmBufDescPtr;
 197
 198 typedef struct _drmBufInfo {
 199     int              count;       /**< Number of buffers described in list */
 200     drmBufDescPtr    list;        /**< List of buffer descriptions */
 201 } drmBufInfo, *drmBufInfoPtr;
 202
 203 typedef struct _drmBuf {
 204     int              idx;         /**< Index into the master buffer list */
 205     int              total;       /**< Buffer size */
 206     int              used;        /**< Amount of buffer in use (for DMA) */
 207     drmAddress       address;     /**< Address */
 208 } drmBuf, *drmBufPtr;
 209
 210 /**
 211  * Buffer mapping information.
 212  *
 213  * Used by drmMapBufs() and drmUnmapBufs() to store information about the
 214  * mapped buffers.
 215  */
 216 typedef struct _drmBufMap {
 217     int              count;       /**< Number of buffers mapped */
 218     drmBufPtr        list;        /**< Buffers */
 219 } drmBufMap, *drmBufMapPtr;
 220
 221 typedef struct _drmLock {
 222     volatile unsigned int lock;
 223     char                      padding[60];
 224     /* This is big enough for most current (and future?) architectures:
 225        DEC Alpha:              32 bytes
 226        Intel Merced:           ?
 227        Intel P5/PPro/PII/PIII: 32 bytes
 228        Intel StrongARM:        32 bytes
 229        Intel i386/i486:        16 bytes
 230        MIPS:                   32 bytes (?)
 231        Motorola 68k:           16 bytes
 232        Motorola PowerPC:       32 bytes
 233        Sun SPARC:              32 bytes
 234     */
 235 } drmLock, *drmLockPtr;
 236
 237 /**
 238  * Indices here refer to the offset into
 239  * list in drmBufInfo
 240  */
 241 typedef struct _drmDMAReq {
 242     drm_context_t    context;     /**< Context handle */
 243     int           send_count;     /**< Number of buffers to send */
 244     int           *send_list;     /**< List of handles to buffers */
 245     int           *send_sizes;    /**< Lengths of data to send, in bytes */
 246     drmDMAFlags   flags;          /**< Flags */
 247     int           request_count;  /**< Number of buffers requested */
 248     int           request_size;   /**< Desired size of buffers requested */
 249     int           *request_list;  /**< Buffer information */
 250     int           *request_sizes; /**< Minimum acceptable sizes */
 251     int           granted_count;  /**< Number of buffers granted at this size */
 252 } drmDMAReq, *drmDMAReqPtr;
 253
 254 typedef struct _drmRegion {
 255     drm_handle_t     handle;
 256     unsigned int  offset;
 257     drmSize       size;
 258     drmAddress    map;
 259 } drmRegion, *drmRegionPtr;
 260
 261 typedef struct _drmTextureRegion {
 262     unsigned char next;
 263     unsigned char prev;
 264     unsigned char in_use;
 265     unsigned char padding;      /**< Explicitly pad this out */
 266     unsigned int  age;
 267 } drmTextureRegion, *drmTextureRegionPtr;
 268
 269
 270 typedef enum {
 271     DRM_VBLANK_ABSOLUTE = 0x0,  /**< Wait for specific vblank sequence number */
 272     DRM_VBLANK_RELATIVE = 0x1,  /**< Wait for given number of vblanks */
 273     DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
 274     DRM_VBLANK_SECONDARY = 0x20000000,  /**< Secondary display controller */
 275     DRM_VBLANK_SIGNAL   = 0x40000000    /* Send signal instead of blocking */
 276 } drmVBlankSeqType;
 277
 278 typedef struct _drmVBlankReq {
 279         drmVBlankSeqType type;
 280         unsigned int sequence;
 281         unsigned long signal;
 282 } drmVBlankReq, *drmVBlankReqPtr;
 283
 284 typedef struct _drmVBlankReply {
 285         drmVBlankSeqType type;
 286         unsigned int sequence;
 287         long tval_sec;
 288         long tval_usec;
 289 } drmVBlankReply, *drmVBlankReplyPtr;
 290
 291 typedef union _drmVBlank {
 292         drmVBlankReq request;
 293         drmVBlankReply reply;
 294 } drmVBlank, *drmVBlankPtr;
 295
 296 typedef struct _drmSetVersion {
 297         int drm_di_major;
 298         int drm_di_minor;
 299         int drm_dd_major;
 300         int drm_dd_minor;
 301 } drmSetVersion, *drmSetVersionPtr;
 302
 303 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
 304
 305 #define DRM_LOCK_HELD  0x80000000U /**< Hardware lock is held */
 306 #define DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */
 307
 308 #if defined(__GNUC__) && (__GNUC__ >= 2)
 309 # if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
 310                                 /* Reflect changes here to drmP.h */
 311 #define DRM_CAS(lock,old,new,__ret)                                    \
 312         do {                                                           \
 313                 int __dummy;    /* Can't mark eax as clobbered */      \
 314                 __asm__ __volatile__(                                  \
 315                         "lock ; cmpxchg %4,%1\n\t"                     \
 316                         "setnz %0"                                     \
 317                         : "=d" (__ret),                                \
 318                           "=m" (__drm_dummy_lock(lock)),               \
 319                           "=a" (__dummy)                               \
 320                         : "2" (old),                                   \
 321                           "r" (new));                                  \
 322         } while (0)
 323
 324 #elif defined(__alpha__)
 325
 326 #define DRM_CAS(lock, old, new, ret)            \
 327         do {                                    \
 328                 int old32;                      \
 329                 int cur32;                      \
 330                 __asm__ __volatile__(           \
 331                 "       mb\n"                   \
 332                 "       zap   %4, 0xF0, %0\n"   \
 333                 "       ldl_l %1, %2\n"         \
 334                 "       zap   %1, 0xF0, %1\n"   \
 335                 "       cmpeq %0, %1, %1\n"     \
 336                 "       beq   %1, 1f\n"         \
 337                 "       bis   %5, %5, %1\n"     \
 338                 "       stl_c %1, %2\n"         \
 339                 "1:     xor   %1, 1, %1\n"      \
 340                 "       stl   %1, %3"           \
 341                 : "=r" (old32),                 \
 342                   "=&r" (cur32),                \
 343                    "=m" (__drm_dummy_lock(lock)),\
 344                    "=m" (ret)                   \
 345                 : "r" (old),                    \
 346                   "r" (new));                   \
 347         } while(0)
 348
 349 #elif defined(__sparc__)
 350
 351 #define DRM_CAS(lock,old,new,__ret)                             \
 352 do {    register unsigned int __old __asm("o0");                \
 353         register unsigned int __new __asm("o1");                \
 354         register volatile unsigned int *__lock __asm("o2");     \
 355         __old = old;                                            \
 356         __new = new;                                            \
 357         __lock = (volatile unsigned int *)lock;                 \
 358         __asm__ __volatile__(                                   \
 359                 /*"cas [%2], %3, %0"*/                          \
 360                 ".word 0xd3e29008\n\t"                          \
 361                 /*"membar #StoreStore | #StoreLoad"*/           \
 362                 ".word 0x8143e00a"                              \
 363                 : "=&r" (__new)                                 \
 364                 : "0" (__new),                                  \
 365                   "r" (__lock),                                 \
 366                   "r" (__old)                                   \
 367                 : "memory");                                    \
 368         __ret = (__new != __old);                               \
 369 } while(0)
 370
 371 #elif defined(__ia64__)
 372
 373 #ifdef __INTEL_COMPILER
 374 /* this currently generates bad code (missing stop bits)... */
 375 #include <ia64intrin.h>
 376
 377 #define DRM_CAS(lock,old,new,__ret)                                           \
 378         do {                                                                  \
 379                 unsigned long __result, __old = (old) & 0xffffffff;             \
 380                 __mf();                                                         \
 381                 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
 382                 __ret = (__result) != (__old);                                  \
 383 /*              __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
 384                                                      (old), (new))            \
 385                          != (old));                                           */\
 386         } while (0)
 387
 388 #else
 389 #define DRM_CAS(lock,old,new,__ret)                                       \
 390         do {                                                              \
 391                 unsigned int __result, __old = (old);                     \
 392                 __asm__ __volatile__(                                     \
 393                         "mf\n"                                            \
 394                         "mov ar.ccv=%2\n"                                 \
 395                         ";;\n"                                            \
 396                         "cmpxchg4.acq %0=%1,%3,ar.ccv"                    \
 397                         : "=r" (__result), "=m" (__drm_dummy_lock(lock))  \
 398                         : "r" ((unsigned long)__old), "r" (new)                   \
 399                         : "memory");                                      \
 400                 __ret = (__result) != (__old);                            \
 401         } while (0)
 402
 403 #endif
 404
 405 #elif defined(__powerpc__)
 406
 407 #define DRM_CAS(lock,old,new,__ret)                     \
 408         do {                                            \
 409                 __asm__ __volatile__(                   \
 410                         "sync;"                         \
 411                         "0:    lwarx %0,0,%1;"          \
 412                         "      xor. %0,%3,%0;"          \
 413                         "      bne 1f;"                 \
 414                         "      stwcx. %2,0,%1;"         \
 415                         "      bne- 0b;"                \
 416                         "1:    "                        \
 417                         "sync;"                         \
 418                 : "=&r"(__ret)                          \
 419                 : "r"(lock), "r"(new), "r"(old)         \
 420                 : "cr0", "memory");                     \
 421         } while (0)
 422
 423 #endif /* architecture */
 424 #endif /* __GNUC__ >= 2 */
 425
 426 #ifndef DRM_CAS
 427 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
 428 #endif
 429
 430 #if defined(__alpha__) || defined(__powerpc__)
 431 #define DRM_CAS_RESULT(_result)         int _result
 432 #else
 433 #define DRM_CAS_RESULT(_result)         char _result
 434 #endif
 435
 436 #define DRM_LIGHT_LOCK(fd,lock,context)                                \
 437         do {                                                           \
 438                 DRM_CAS_RESULT(__ret);                                 \
 439                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 440                 if (__ret) drmGetLock(fd,context,0);                   \
 441         } while(0)
 442
 443                                 /* This one counts fast locks -- for
 444                                    benchmarking only. */
 445 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count)                    \
 446         do {                                                           \
 447                 DRM_CAS_RESULT(__ret);                                 \
 448                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 449                 if (__ret) drmGetLock(fd,context,0);                   \
 450                 else       ++count;                                    \
 451         } while(0)
 452
 453 #define DRM_LOCK(fd,lock,context,flags)                                \
 454         do {                                                           \
 455                 if (flags) drmGetLock(fd,context,flags);               \
 456                 else       DRM_LIGHT_LOCK(fd,lock,context);            \
 457         } while(0)
 458
 459 #define DRM_UNLOCK(fd,lock,context)                                    \
 460         do {                                                           \
 461                 DRM_CAS_RESULT(__ret);                                 \
 462                 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret);     \
 463                 if (__ret) drmUnlock(fd,context);                      \
 464         } while(0)
 465
 466                                 /* Simple spin locks */
 467 #define DRM_SPINLOCK(spin,val)                                         \
 468         do {                                                           \
 469             DRM_CAS_RESULT(__ret);                                     \
 470             do {                                                       \
 471                 DRM_CAS(spin,0,val,__ret);                             \
 472                 if (__ret) while ((spin)->lock);                       \
 473             } while (__ret);                                           \
 474         } while(0)
 475
 476 #define DRM_SPINLOCK_TAKE(spin,val)                                    \
 477         do {                                                           \
 478             DRM_CAS_RESULT(__ret);                                     \
 479             int  cur;                                                  \
 480             do {                                                       \
 481                 cur = (*spin).lock;                                    \
 482                 DRM_CAS(spin,cur,val,__ret);                           \
 483             } while (__ret);                                           \
 484         } while(0)
 485
 486 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret)                       \
 487         do {                                                           \
 488             int  __i;                                                  \
 489             __ret = 1;                                                 \
 490             for (__i = 0; __ret && __i < count; __i++) {               \
 491                 DRM_CAS(spin,0,val,__ret);                             \
 492                 if (__ret) for (;__i < count && (spin)->lock; __i++);  \
 493             }                                                          \
 494         } while(0)
 495
 496 #define DRM_SPINUNLOCK(spin,val)                                       \
 497         do {                                                           \
 498             DRM_CAS_RESULT(__ret);                                     \
 499             if ((*spin).lock == val) { /* else server stole lock */    \
 500                 do {                                                   \
 501                     DRM_CAS(spin,val,0,__ret);                         \
 502                 } while (__ret);                                       \
 503             }                                                          \
 504         } while(0)
 505
 506
 507
 508 /* General user-level programmer's API: unprivileged */
 509 extern int           drmAvailable(void);
 510 extern int           drmOpen(const char *name, const char *busid);
 511 extern int           drmClose(int fd);
 512 extern drmVersionPtr drmGetVersion(int fd);
 513 extern drmVersionPtr drmGetLibVersion(int fd);
 514 extern void          drmFreeVersion(drmVersionPtr);
 515 extern int           drmGetMagic(int fd, drm_magic_t * magic);
 516 extern char          *drmGetBusid(int fd);
 517 extern int           drmGetInterruptFromBusID(int fd, int busnum, int devnum,
 518                                               int funcnum);
 519 extern int           drmGetMap(int fd, int idx, drm_handle_t *offset,
 520                                drmSize *size, drmMapType *type,
 521                                drmMapFlags *flags, drm_handle_t *handle,
 522                                int *mtrr);
 523 extern int           drmGetClient(int fd, int idx, int *auth, int *pid,
 524                                   int *uid, unsigned long *magic,
 525                                   unsigned long *iocs);
 526 extern int           drmGetStats(int fd, drmStatsT *stats);
 527 extern int           drmSetInterfaceVersion(int fd, drmSetVersion *version);
 528 extern int           drmCommandNone(int fd, unsigned long drmCommandIndex);
 529 extern int           drmCommandRead(int fd, unsigned long drmCommandIndex,
 530                                     void *data, unsigned long size);
 531 extern int           drmCommandWrite(int fd, unsigned long drmCommandIndex,
 532                                      void *data, unsigned long size);
 533 extern int           drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
 534                                          void *data, unsigned long size);
 535
 536 /* General user-level programmer's API: X server (root) only  */
 537 extern void          drmFreeBusid(const char *busid);
 538 extern int           drmSetBusid(int fd, const char *busid);
 539 extern int           drmAuthMagic(int fd, drm_magic_t magic);
 540 extern int           drmAddMap(int fd,
 541                                drm_handle_t offset,
 542                                drmSize size,
 543                                drmMapType type,
 544                                drmMapFlags flags,
 545                                drm_handle_t * handle);
 546 extern int           drmRmMap(int fd, drm_handle_t handle);
 547 extern int           drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
 548                                                  drm_handle_t handle);
 549
 550 extern int           drmAddBufs(int fd, int count, int size,
 551                                 drmBufDescFlags flags,
 552                                 int agp_offset);
 553 extern int           drmMarkBufs(int fd, double low, double high);
 554 extern int           drmCreateContext(int fd, drm_context_t * handle);
 555 extern int           drmSetContextFlags(int fd, drm_context_t context,
 556                                         drm_context_tFlags flags);
 557 extern int           drmGetContextFlags(int fd, drm_context_t context,
 558                                         drm_context_tFlagsPtr flags);
 559 extern int           drmAddContextTag(int fd, drm_context_t context, void *tag);
 560 extern int           drmDelContextTag(int fd, drm_context_t context);
 561 extern void          *drmGetContextTag(int fd, drm_context_t context);
 562 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
 563 extern void          drmFreeReservedContextList(drm_context_t *);
 564 extern int           drmSwitchToContext(int fd, drm_context_t context);
 565 extern int           drmDestroyContext(int fd, drm_context_t handle);
 566 extern int           drmCreateDrawable(int fd, drm_drawable_t * handle);
 567 extern int           drmDestroyDrawable(int fd, drm_drawable_t handle);
 568 extern int           drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
 569                                            drm_drawable_info_type_t type,
 570                                            unsigned int num, void *data);
 571 extern int           drmCtlInstHandler(int fd, int irq);
 572 extern int           drmCtlUninstHandler(int fd);
 573
 574 /* General user-level programmer's API: authenticated client and/or X */
 575 extern int           drmMap(int fd,
 576                             drm_handle_t handle,
 577                             drmSize size,
 578                             drmAddressPtr address);
 579 extern int           drmUnmap(drmAddress address, drmSize size);
 580 extern drmBufInfoPtr drmGetBufInfo(int fd);
 581 extern drmBufMapPtr  drmMapBufs(int fd);
 582 extern int           drmUnmapBufs(drmBufMapPtr bufs);
 583 extern int           drmDMA(int fd, drmDMAReqPtr request);
 584 extern int           drmFreeBufs(int fd, int count, int *list);
 585 extern int           drmGetLock(int fd,
 586                                 drm_context_t context,
 587                                 drmLockFlags flags);
 588 extern int           drmUnlock(int fd, drm_context_t context);
 589 extern int           drmFinish(int fd, int context, drmLockFlags flags);
 590 extern int           drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
 591                                                  drm_handle_t * handle);
 592
 593 /* AGP/GART support: X server (root) only */
 594 extern int           drmAgpAcquire(int fd);
 595 extern int           drmAgpRelease(int fd);
 596 extern int           drmAgpEnable(int fd, unsigned long mode);
 597 extern int           drmAgpAlloc(int fd, unsigned long size,
 598                                  unsigned long type, unsigned long *address,
 599                                  drm_handle_t *handle);
 600 extern int           drmAgpFree(int fd, drm_handle_t handle);
 601 extern int           drmAgpBind(int fd, drm_handle_t handle,
 602                                 unsigned long offset);
 603 extern int           drmAgpUnbind(int fd, drm_handle_t handle);
 604
 605 /* AGP/GART info: authenticated client and/or X */
 606 extern int           drmAgpVersionMajor(int fd);
 607 extern int           drmAgpVersionMinor(int fd);
 608 extern unsigned long drmAgpGetMode(int fd);
 609 extern unsigned long drmAgpBase(int fd); /* Physical location */
 610 extern unsigned long drmAgpSize(int fd); /* Bytes */
 611 extern unsigned long drmAgpMemoryUsed(int fd);
 612 extern unsigned long drmAgpMemoryAvail(int fd);
 613 extern unsigned int  drmAgpVendorId(int fd);
 614 extern unsigned int  drmAgpDeviceId(int fd);
 615
 616 /* PCI scatter/gather support: X server (root) only */
 617 extern int           drmScatterGatherAlloc(int fd, unsigned long size,
 618                                            drm_handle_t *handle);
 619 extern int           drmScatterGatherFree(int fd, drm_handle_t handle);
 620
 621 extern int           drmWaitVBlank(int fd, drmVBlankPtr vbl);
 622
 623 /* Support routines */
 624 extern void          drmSetServerInfo(drmServerInfoPtr info);
 625 extern int           drmError(int err, const char *label);
 626 extern void          *drmMalloc(int size);
 627 extern void          drmFree(void *pt);
 628
 629 /* Hash table routines */
 630 extern void *drmHashCreate(void);
 631 extern int  drmHashDestroy(void *t);
 632 extern int  drmHashLookup(void *t, unsigned long key, void **value);
 633 extern int  drmHashInsert(void *t, unsigned long key, void *value);
 634 extern int  drmHashDelete(void *t, unsigned long key);
 635 extern int  drmHashFirst(void *t, unsigned long *key, void **value);
 636 extern int  drmHashNext(void *t, unsigned long *key, void **value);
 637
 638 /* PRNG routines */
 639 extern void          *drmRandomCreate(unsigned long seed);
 640 extern int           drmRandomDestroy(void *state);
 641 extern unsigned long drmRandom(void *state);
 642 extern double        drmRandomDouble(void *state);
 643
 644 /* Skip list routines */
 645
 646 extern void *drmSLCreate(void);
 647 extern int  drmSLDestroy(void *l);
 648 extern int  drmSLLookup(void *l, unsigned long key, void **value);
 649 extern int  drmSLInsert(void *l, unsigned long key, void *value);
 650 extern int  drmSLDelete(void *l, unsigned long key);
 651 extern int  drmSLNext(void *l, unsigned long *key, void **value);
 652 extern int  drmSLFirst(void *l, unsigned long *key, void **value);
 653 extern void drmSLDump(void *l);
 654 extern int  drmSLLookupNeighbors(void *l, unsigned long key,
 655                                  unsigned long *prev_key, void **prev_value,
 656                                  unsigned long *next_key, void **next_value);
 657
 658 extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
 659 extern void drmCloseOnce(int fd);
 660
 661 #include "xf86mm.h"
 662
 663 #endif