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 #ifndef _XF86DRM_H_
  35 #define _XF86DRM_H_
  36
  37 #include <stdarg.h>
  38 #include <sys/types.h>
  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 typedef struct _drmServerInfo {
  65   int (*debug_print)(const char *format, va_list ap);
  66   int (*load_module)(const char *name);
  67   void (*get_perms)(gid_t *, mode_t *);
  68 } drmServerInfo, *drmServerInfoPtr;
  69
  70 typedef struct drmHashEntry {
  71     int      fd;
  72     void     (*f)(int, void *, void *);
  73     void     *tagTable;
  74 } drmHashEntry;
  75
  76 extern void *drmGetHashTable(void);
  77 extern drmHashEntry *drmGetEntry(int fd);
  78
  79 /**
  80  * Driver version information.
  81  *
  82  * \sa drmGetVersion() and drmSetVersion().
  83  */
  84 typedef struct _drmVersion {
  85     int     version_major;        /**< Major version */
  86     int     version_minor;        /**< Minor version */
  87     int     version_patchlevel;   /**< Patch level */
  88     int     name_len;             /**< Length of name buffer */
  89     char    *name;                /**< Name of driver */
  90     int     date_len;             /**< Length of date buffer */
  91     char    *date;                /**< User-space buffer to hold date */
  92     int     desc_len;             /**< Length of desc buffer */
  93     char    *desc;                /**< User-space buffer to hold desc */
  94 } drmVersion, *drmVersionPtr;
  95
  96 typedef struct _drmStats {
  97     unsigned long count;             /**< Number of data */
  98     struct {
  99         unsigned long value;         /**< Value from kernel */
 100         const char    *long_format;  /**< Suggested format for long_name */
 101         const char    *long_name;    /**< Long name for value */
 102         const char    *rate_format;  /**< Suggested format for rate_name */
 103         const char    *rate_name;    /**< Short name for value per second */
 104         int           isvalue;       /**< True if value (vs. counter) */
 105         const char    *mult_names;   /**< Multiplier names (e.g., "KGM") */
 106         int           mult;          /**< Multiplier value (e.g., 1024) */
 107         int           verbose;       /**< Suggest only in verbose output */
 108     } data[15];
 109 } drmStatsT;
 110
 111
 112                                 /* All of these enums *MUST* match with the
 113                                    kernel implementation -- so do *NOT*
 114                                    change them!  (The drmlib implementation
 115                                    will just copy the flags instead of
 116                                    translating them.) */
 117 typedef enum {
 118     DRM_FRAME_BUFFER    = 0,      /**< WC, no caching, no core dump */
 119     DRM_REGISTERS       = 1,      /**< no caching, no core dump */
 120     DRM_SHM             = 2,      /**< shared, cached */
 121     DRM_AGP             = 3,      /**< AGP/GART */
 122     DRM_SCATTER_GATHER  = 4,      /**< PCI scatter/gather */
 123     DRM_CONSISTENT      = 5       /**< PCI consistent */
 124 } drmMapType;
 125
 126 typedef enum {
 127     DRM_RESTRICTED      = 0x0001, /**< Cannot be mapped to client-virtual */
 128     DRM_READ_ONLY       = 0x0002, /**< Read-only in client-virtual */
 129     DRM_LOCKED          = 0x0004, /**< Physical pages locked */
 130     DRM_KERNEL          = 0x0008, /**< Kernel requires access */
 131     DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
 132     DRM_CONTAINS_LOCK   = 0x0020, /**< SHM page that contains lock */
 133     DRM_REMOVABLE       = 0x0040  /**< Removable mapping */
 134 } drmMapFlags;
 135
 136 /**
 137  * \warning These values *MUST* match drm.h
 138  */
 139 typedef enum {
 140     /** \name Flags for DMA buffer dispatch */
 141     /*@{*/
 142     DRM_DMA_BLOCK        = 0x01, /**<
 143                                   * Block until buffer dispatched.
 144                                   *
 145                                   * \note the buffer may not yet have been
 146                                   * processed by the hardware -- getting a
 147                                   * hardware lock with the hardware quiescent
 148                                   * will ensure that the buffer has been
 149                                   * processed.
 150                                   */
 151     DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
 152     DRM_DMA_PRIORITY     = 0x04, /**< High priority dispatch */
 153     /*@}*/
 154
 155     /** \name Flags for DMA buffer request */
 156     /*@{*/
 157     DRM_DMA_WAIT         = 0x10, /**< Wait for free buffers */
 158     DRM_DMA_SMALLER_OK   = 0x20, /**< Smaller-than-requested buffers OK */
 159     DRM_DMA_LARGER_OK    = 0x40  /**< Larger-than-requested buffers OK */
 160     /*@}*/
 161 } drmDMAFlags;
 162
 163 typedef enum {
 164     DRM_PAGE_ALIGN       = 0x01,
 165     DRM_AGP_BUFFER       = 0x02,
 166     DRM_SG_BUFFER        = 0x04,
 167     DRM_FB_BUFFER        = 0x08,
 168     DRM_PCI_BUFFER_RO    = 0x10
 169 } drmBufDescFlags;
 170
 171 typedef enum {
 172     DRM_LOCK_READY      = 0x01, /**< Wait until hardware is ready for DMA */
 173     DRM_LOCK_QUIESCENT  = 0x02, /**< Wait until hardware quiescent */
 174     DRM_LOCK_FLUSH      = 0x04, /**< Flush this context's DMA queue first */
 175     DRM_LOCK_FLUSH_ALL  = 0x08, /**< Flush all DMA queues first */
 176                                 /* These *HALT* flags aren't supported yet
 177                                    -- they will be used to support the
 178                                    full-screen DGA-like mode. */
 179     DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
 180     DRM_HALT_CUR_QUEUES = 0x20  /**< Halt all current queues */
 181 } drmLockFlags;
 182
 183 typedef enum {
 184     DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
 185                                      never swapped. */
 186     DRM_CONTEXT_2DONLY    = 0x02  /**< This context is for 2D rendering only. */
 187 } drm_context_tFlags, *drm_context_tFlagsPtr;
 188
 189 typedef struct _drmBufDesc {
 190     int              count;       /**< Number of buffers of this size */
 191     int              size;        /**< Size in bytes */
 192     int              low_mark;    /**< Low water mark */
 193     int              high_mark;   /**< High water mark */
 194 } drmBufDesc, *drmBufDescPtr;
 195
 196 typedef struct _drmBufInfo {
 197     int              count;       /**< Number of buffers described in list */
 198     drmBufDescPtr    list;        /**< List of buffer descriptions */
 199 } drmBufInfo, *drmBufInfoPtr;
 200
 201 typedef struct _drmBuf {
 202     int              idx;         /**< Index into the master buffer list */
 203     int              total;       /**< Buffer size */
 204     int              used;        /**< Amount of buffer in use (for DMA) */
 205     drmAddress       address;     /**< Address */
 206 } drmBuf, *drmBufPtr;
 207
 208 /**
 209  * Buffer mapping information.
 210  *
 211  * Used by drmMapBufs() and drmUnmapBufs() to store information about the
 212  * mapped buffers.
 213  */
 214 typedef struct _drmBufMap {
 215     int              count;       /**< Number of buffers mapped */
 216     drmBufPtr        list;        /**< Buffers */
 217 } drmBufMap, *drmBufMapPtr;
 218
 219 typedef struct _drmLock {
 220     volatile unsigned int lock;
 221     char                      padding[60];
 222     /* This is big enough for most current (and future?) architectures:
 223        DEC Alpha:              32 bytes
 224        Intel Merced:           ?
 225        Intel P5/PPro/PII/PIII: 32 bytes
 226        Intel StrongARM:        32 bytes
 227        Intel i386/i486:        16 bytes
 228        MIPS:                   32 bytes (?)
 229        Motorola 68k:           16 bytes
 230        Motorola PowerPC:       32 bytes
 231        Sun SPARC:              32 bytes
 232     */
 233 } drmLock, *drmLockPtr;
 234
 235 /**
 236  * Indices here refer to the offset into
 237  * list in drmBufInfo
 238  */
 239 typedef struct _drmDMAReq {
 240     drm_context_t    context;     /**< Context handle */
 241     int           send_count;     /**< Number of buffers to send */
 242     int           *send_list;     /**< List of handles to buffers */
 243     int           *send_sizes;    /**< Lengths of data to send, in bytes */
 244     drmDMAFlags   flags;          /**< Flags */
 245     int           request_count;  /**< Number of buffers requested */
 246     int           request_size;   /**< Desired size of buffers requested */
 247     int           *request_list;  /**< Buffer information */
 248     int           *request_sizes; /**< Minimum acceptable sizes */
 249     int           granted_count;  /**< Number of buffers granted at this size */
 250 } drmDMAReq, *drmDMAReqPtr;
 251
 252 typedef struct _drmRegion {
 253     drm_handle_t     handle;
 254     unsigned int  offset;
 255     drmSize       size;
 256     drmAddress    map;
 257 } drmRegion, *drmRegionPtr;
 258
 259 typedef struct _drmTextureRegion {
 260     unsigned char next;
 261     unsigned char prev;
 262     unsigned char in_use;
 263     unsigned char padding;      /**< Explicitly pad this out */
 264     unsigned int  age;
 265 } drmTextureRegion, *drmTextureRegionPtr;
 266
 267
 268 typedef enum {
 269     DRM_VBLANK_ABSOLUTE = 0x0,  /**< Wait for specific vblank sequence number */
 270     DRM_VBLANK_RELATIVE = 0x1,  /**< Wait for given number of vblanks */
 271     DRM_VBLANK_FLIP = 0x8000000,        /**< Scheduled buffer swap should flip */
 272     DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
 273     DRM_VBLANK_SECONDARY = 0x20000000,  /**< Secondary display controller */
 274     DRM_VBLANK_SIGNAL   = 0x40000000    /* Send signal instead of blocking */
 275 } drmVBlankSeqType;
 276
 277 typedef struct _drmVBlankReq {
 278         drmVBlankSeqType type;
 279         unsigned int sequence;
 280         unsigned long signal;
 281 } drmVBlankReq, *drmVBlankReqPtr;
 282
 283 typedef struct _drmVBlankReply {
 284         drmVBlankSeqType type;
 285         unsigned int sequence;
 286         long tval_sec;
 287         long tval_usec;
 288 } drmVBlankReply, *drmVBlankReplyPtr;
 289
 290 typedef union _drmVBlank {
 291         drmVBlankReq request;
 292         drmVBlankReply reply;
 293 } drmVBlank, *drmVBlankPtr;
 294
 295 typedef struct _drmSetVersion {
 296         int drm_di_major;
 297         int drm_di_minor;
 298         int drm_dd_major;
 299         int drm_dd_minor;
 300 } drmSetVersion, *drmSetVersionPtr;
 301
 302 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
 303
 304 #define DRM_LOCK_HELD  0x80000000U /**< Hardware lock is held */
 305 #define DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */
 306
 307 #if defined(__GNUC__) && (__GNUC__ >= 2)
 308 # if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
 309                                 /* Reflect changes here to drmP.h */
 310 #define DRM_CAS(lock,old,new,__ret)                                    \
 311         do {                                                           \
 312                 int __dummy;    /* Can't mark eax as clobbered */      \
 313                 __asm__ __volatile__(                                  \
 314                         "lock ; cmpxchg %4,%1\n\t"                     \
 315                         "setnz %0"                                     \
 316                         : "=d" (__ret),                                \
 317                           "=m" (__drm_dummy_lock(lock)),               \
 318                           "=a" (__dummy)                               \
 319                         : "2" (old),                                   \
 320                           "r" (new));                                  \
 321         } while (0)
 322
 323 #elif defined(__alpha__)
 324
 325 #define DRM_CAS(lock, old, new, ret)            \
 326         do {                                    \
 327                 int old32;                      \
 328                 int cur32;                      \
 329                 __asm__ __volatile__(           \
 330                 "       mb\n"                   \
 331                 "       zap   %4, 0xF0, %0\n"   \
 332                 "       ldl_l %1, %2\n"         \
 333                 "       zap   %1, 0xF0, %1\n"   \
 334                 "       cmpeq %0, %1, %1\n"     \
 335                 "       beq   %1, 1f\n"         \
 336                 "       bis   %5, %5, %1\n"     \
 337                 "       stl_c %1, %2\n"         \
 338                 "1:     xor   %1, 1, %1\n"      \
 339                 "       stl   %1, %3"           \
 340                 : "=r" (old32),                 \
 341                   "=&r" (cur32),                \
 342                    "=m" (__drm_dummy_lock(lock)),\
 343                    "=m" (ret)                   \
 344                 : "r" (old),                    \
 345                   "r" (new));                   \
 346         } while(0)
 347
 348 #elif defined(__sparc__)
 349
 350 #define DRM_CAS(lock,old,new,__ret)                             \
 351 do {    register unsigned int __old __asm("o0");                \
 352         register unsigned int __new __asm("o1");                \
 353         register volatile unsigned int *__lock __asm("o2");     \
 354         __old = old;                                            \
 355         __new = new;                                            \
 356         __lock = (volatile unsigned int *)lock;                 \
 357         __asm__ __volatile__(                                   \
 358                 /*"cas [%2], %3, %0"*/                          \
 359                 ".word 0xd3e29008\n\t"                          \
 360                 /*"membar #StoreStore | #StoreLoad"*/           \
 361                 ".word 0x8143e00a"                              \
 362                 : "=&r" (__new)                                 \
 363                 : "0" (__new),                                  \
 364                   "r" (__lock),                                 \
 365                   "r" (__old)                                   \
 366                 : "memory");                                    \
 367         __ret = (__new != __old);                               \
 368 } while(0)
 369
 370 #elif defined(__ia64__)
 371
 372 #ifdef __INTEL_COMPILER
 373 /* this currently generates bad code (missing stop bits)... */
 374 #include <ia64intrin.h>
 375
 376 #define DRM_CAS(lock,old,new,__ret)                                           \
 377         do {                                                                  \
 378                 unsigned long __result, __old = (old) & 0xffffffff;             \
 379                 __mf();                                                         \
 380                 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
 381                 __ret = (__result) != (__old);                                  \
 382 /*              __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
 383                                                      (old), (new))            \
 384                          != (old));                                           */\
 385         } while (0)
 386
 387 #else
 388 #define DRM_CAS(lock,old,new,__ret)                                       \
 389         do {                                                              \
 390                 unsigned int __result, __old = (old);                     \
 391                 __asm__ __volatile__(                                     \
 392                         "mf\n"                                            \
 393                         "mov ar.ccv=%2\n"                                 \
 394                         ";;\n"                                            \
 395                         "cmpxchg4.acq %0=%1,%3,ar.ccv"                    \
 396                         : "=r" (__result), "=m" (__drm_dummy_lock(lock))  \
 397                         : "r" ((unsigned long)__old), "r" (new)                   \
 398                         : "memory");                                      \
 399                 __ret = (__result) != (__old);                            \
 400         } while (0)
 401
 402 #endif
 403
 404 #elif defined(__powerpc__)
 405
 406 #define DRM_CAS(lock,old,new,__ret)                     \
 407         do {                                            \
 408                 __asm__ __volatile__(                   \
 409                         "sync;"                         \
 410                         "0:    lwarx %0,0,%1;"          \
 411                         "      xor. %0,%3,%0;"          \
 412                         "      bne 1f;"                 \
 413                         "      stwcx. %2,0,%1;"         \
 414                         "      bne- 0b;"                \
 415                         "1:    "                        \
 416                         "sync;"                         \
 417                 : "=&r"(__ret)                          \
 418                 : "r"(lock), "r"(new), "r"(old)         \
 419                 : "cr0", "memory");                     \
 420         } while (0)
 421
 422 #endif /* architecture */
 423 #endif /* __GNUC__ >= 2 */
 424
 425 #ifndef DRM_CAS
 426 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
 427 #endif
 428
 429 #if defined(__alpha__) || defined(__powerpc__)
 430 #define DRM_CAS_RESULT(_result)         int _result
 431 #else
 432 #define DRM_CAS_RESULT(_result)         char _result
 433 #endif
 434
 435 #define DRM_LIGHT_LOCK(fd,lock,context)                                \
 436         do {                                                           \
 437                 DRM_CAS_RESULT(__ret);                                 \
 438                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 439                 if (__ret) drmGetLock(fd,context,0);                   \
 440         } while(0)
 441
 442                                 /* This one counts fast locks -- for
 443                                    benchmarking only. */
 444 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count)                    \
 445         do {                                                           \
 446                 DRM_CAS_RESULT(__ret);                                 \
 447                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 448                 if (__ret) drmGetLock(fd,context,0);                   \
 449                 else       ++count;                                    \
 450         } while(0)
 451
 452 #define DRM_LOCK(fd,lock,context,flags)                                \
 453         do {                                                           \
 454                 if (flags) drmGetLock(fd,context,flags);               \
 455                 else       DRM_LIGHT_LOCK(fd,lock,context);            \
 456         } while(0)
 457
 458 #define DRM_UNLOCK(fd,lock,context)                                    \
 459         do {                                                           \
 460                 DRM_CAS_RESULT(__ret);                                 \
 461                 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret);     \
 462                 if (__ret) drmUnlock(fd,context);                      \
 463         } while(0)
 464
 465                                 /* Simple spin locks */
 466 #define DRM_SPINLOCK(spin,val)                                         \
 467         do {                                                           \
 468             DRM_CAS_RESULT(__ret);                                     \
 469             do {                                                       \
 470                 DRM_CAS(spin,0,val,__ret);                             \
 471                 if (__ret) while ((spin)->lock);                       \
 472             } while (__ret);                                           \
 473         } while(0)
 474
 475 #define DRM_SPINLOCK_TAKE(spin,val)                                    \
 476         do {                                                           \
 477             DRM_CAS_RESULT(__ret);                                     \
 478             int  cur;                                                  \
 479             do {                                                       \
 480                 cur = (*spin).lock;                                    \
 481                 DRM_CAS(spin,cur,val,__ret);                           \
 482             } while (__ret);                                           \
 483         } while(0)
 484
 485 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret)                       \
 486         do {                                                           \
 487             int  __i;                                                  \
 488             __ret = 1;                                                 \
 489             for (__i = 0; __ret && __i < count; __i++) {               \
 490                 DRM_CAS(spin,0,val,__ret);                             \
 491                 if (__ret) for (;__i < count && (spin)->lock; __i++);  \
 492             }                                                          \
 493         } while(0)
 494
 495 #define DRM_SPINUNLOCK(spin,val)                                       \
 496         do {                                                           \
 497             DRM_CAS_RESULT(__ret);                                     \
 498             if ((*spin).lock == val) { /* else server stole lock */    \
 499                 do {                                                   \
 500                     DRM_CAS(spin,val,0,__ret);                         \
 501                 } while (__ret);                                       \
 502             }                                                          \
 503         } while(0)
 504
 505
 506
 507 /* General user-level programmer's API: unprivileged */
 508 extern int           drmAvailable(void);
 509 extern int           drmOpen(const char *name, const char *busid);
 510 extern int           drmClose(int fd);
 511 extern drmVersionPtr drmGetVersion(int fd);
 512 extern drmVersionPtr drmGetLibVersion(int fd);
 513 extern void          drmFreeVersion(drmVersionPtr);
 514 extern int           drmGetMagic(int fd, drm_magic_t * magic);
 515 extern char          *drmGetBusid(int fd);
 516 extern int           drmGetInterruptFromBusID(int fd, int busnum, int devnum,
 517                                               int funcnum);
 518 extern int           drmGetMap(int fd, int idx, drm_handle_t *offset,
 519                                drmSize *size, drmMapType *type,
 520                                drmMapFlags *flags, drm_handle_t *handle,
 521                                int *mtrr);
 522 extern int           drmGetClient(int fd, int idx, int *auth, int *pid,
 523                                   int *uid, unsigned long *magic,
 524                                   unsigned long *iocs);
 525 extern int           drmGetStats(int fd, drmStatsT *stats);
 526 extern int           drmSetInterfaceVersion(int fd, drmSetVersion *version);
 527 extern int           drmCommandNone(int fd, unsigned long drmCommandIndex);
 528 extern int           drmCommandRead(int fd, unsigned long drmCommandIndex,
 529                                     void *data, unsigned long size);
 530 extern int           drmCommandWrite(int fd, unsigned long drmCommandIndex,
 531                                      void *data, unsigned long size);
 532 extern int           drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
 533                                          void *data, unsigned long size);
 534
 535 /* General user-level programmer's API: X server (root) only  */
 536 extern void          drmFreeBusid(const char *busid);
 537 extern int           drmSetBusid(int fd, const char *busid);
 538 extern int           drmAuthMagic(int fd, drm_magic_t magic);
 539 extern int           drmAddMap(int fd,
 540                                drm_handle_t offset,
 541                                drmSize size,
 542                                drmMapType type,
 543                                drmMapFlags flags,
 544                                drm_handle_t * handle);
 545 extern int           drmRmMap(int fd, drm_handle_t handle);
 546 extern int           drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
 547                                                  drm_handle_t handle);
 548
 549 extern int           drmAddBufs(int fd, int count, int size,
 550                                 drmBufDescFlags flags,
 551                                 int agp_offset);
 552 extern int           drmMarkBufs(int fd, double low, double high);
 553 extern int           drmCreateContext(int fd, drm_context_t * handle);
 554 extern int           drmSetContextFlags(int fd, drm_context_t context,
 555                                         drm_context_tFlags flags);
 556 extern int           drmGetContextFlags(int fd, drm_context_t context,
 557                                         drm_context_tFlagsPtr flags);
 558 extern int           drmAddContextTag(int fd, drm_context_t context, void *tag);
 559 extern int           drmDelContextTag(int fd, drm_context_t context);
 560 extern void          *drmGetContextTag(int fd, drm_context_t context);
 561 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
 562 extern void          drmFreeReservedContextList(drm_context_t *);
 563 extern int           drmSwitchToContext(int fd, drm_context_t context);
 564 extern int           drmDestroyContext(int fd, drm_context_t handle);
 565 extern int           drmCreateDrawable(int fd, drm_drawable_t * handle);
 566 extern int           drmDestroyDrawable(int fd, drm_drawable_t handle);
 567 extern int           drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
 568                                            drm_drawable_info_type_t type,
 569                                            unsigned int num, void *data);
 570 extern int           drmCtlInstHandler(int fd, int irq);
 571 extern int           drmCtlUninstHandler(int fd);
 572
 573 /* General user-level programmer's API: authenticated client and/or X */
 574 extern int           drmMap(int fd,
 575                             drm_handle_t handle,
 576                             drmSize size,
 577                             drmAddressPtr address);
 578 extern int           drmUnmap(drmAddress address, drmSize size);
 579 extern drmBufInfoPtr drmGetBufInfo(int fd);
 580 extern drmBufMapPtr  drmMapBufs(int fd);
 581 extern int           drmUnmapBufs(drmBufMapPtr bufs);
 582 extern int           drmDMA(int fd, drmDMAReqPtr request);
 583 extern int           drmFreeBufs(int fd, int count, int *list);
 584 extern int           drmGetLock(int fd,
 585                                 drm_context_t context,
 586                                 drmLockFlags flags);
 587 extern int           drmUnlock(int fd, drm_context_t context);
 588 extern int           drmFinish(int fd, int context, drmLockFlags flags);
 589 extern int           drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
 590                                                  drm_handle_t * handle);
 591
 592 /* AGP/GART support: X server (root) only */
 593 extern int           drmAgpAcquire(int fd);
 594 extern int           drmAgpRelease(int fd);
 595 extern int           drmAgpEnable(int fd, unsigned long mode);
 596 extern int           drmAgpAlloc(int fd, unsigned long size,
 597                                  unsigned long type, unsigned long *address,
 598                                  drm_handle_t *handle);
 599 extern int           drmAgpFree(int fd, drm_handle_t handle);
 600 extern int           drmAgpBind(int fd, drm_handle_t handle,
 601                                 unsigned long offset);
 602 extern int           drmAgpUnbind(int fd, drm_handle_t handle);
 603
 604 /* AGP/GART info: authenticated client and/or X */
 605 extern int           drmAgpVersionMajor(int fd);
 606 extern int           drmAgpVersionMinor(int fd);
 607 extern unsigned long drmAgpGetMode(int fd);
 608 extern unsigned long drmAgpBase(int fd); /* Physical location */
 609 extern unsigned long drmAgpSize(int fd); /* Bytes */
 610 extern unsigned long drmAgpMemoryUsed(int fd);
 611 extern unsigned long drmAgpMemoryAvail(int fd);
 612 extern unsigned int  drmAgpVendorId(int fd);
 613 extern unsigned int  drmAgpDeviceId(int fd);
 614
 615 /* PCI scatter/gather support: X server (root) only */
 616 extern int           drmScatterGatherAlloc(int fd, unsigned long size,
 617                                            drm_handle_t *handle);
 618 extern int           drmScatterGatherFree(int fd, drm_handle_t handle);
 619
 620 extern int           drmWaitVBlank(int fd, drmVBlankPtr vbl);
 621
 622 /* Support routines */
 623 extern void          drmSetServerInfo(drmServerInfoPtr info);
 624 extern int           drmError(int err, const char *label);
 625 extern void          *drmMalloc(int size);
 626 extern void          drmFree(void *pt);
 627
 628 /* Hash table routines */
 629 extern void *drmHashCreate(void);
 630 extern int  drmHashDestroy(void *t);
 631 extern int  drmHashLookup(void *t, unsigned long key, void **value);
 632 extern int  drmHashInsert(void *t, unsigned long key, void *value);
 633 extern int  drmHashDelete(void *t, unsigned long key);
 634 extern int  drmHashFirst(void *t, unsigned long *key, void **value);
 635 extern int  drmHashNext(void *t, unsigned long *key, void **value);
 636
 637 /* PRNG routines */
 638 extern void          *drmRandomCreate(unsigned long seed);
 639 extern int           drmRandomDestroy(void *state);
 640 extern unsigned long drmRandom(void *state);
 641 extern double        drmRandomDouble(void *state);
 642
 643 /* Skip list routines */
 644
 645 extern void *drmSLCreate(void);
 646 extern int  drmSLDestroy(void *l);
 647 extern int  drmSLLookup(void *l, unsigned long key, void **value);
 648 extern int  drmSLInsert(void *l, unsigned long key, void *value);
 649 extern int  drmSLDelete(void *l, unsigned long key);
 650 extern int  drmSLNext(void *l, unsigned long *key, void **value);
 651 extern int  drmSLFirst(void *l, unsigned long *key, void **value);
 652 extern void drmSLDump(void *l);
 653 extern int  drmSLLookupNeighbors(void *l, unsigned long key,
 654                                  unsigned long *prev_key, void **prev_value,
 655                                  unsigned long *next_key, void **next_value);
 656
 657 extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
 658 extern void drmCloseOnce(int fd);
 659
 660 #include "xf86mm.h"
 661
 662 #endif