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     DRM_FB_BUFFER        = 0x08
 153 } drmBufDescFlags;
 154
 155 typedef enum {
 156     DRM_LOCK_READY      = 0x01, /**< Wait until hardware is ready for DMA */
 157     DRM_LOCK_QUIESCENT  = 0x02, /**< Wait until hardware quiescent */
 158     DRM_LOCK_FLUSH      = 0x04, /**< Flush this context's DMA queue first */
 159     DRM_LOCK_FLUSH_ALL  = 0x08, /**< Flush all DMA queues first */
 160                                 /* These *HALT* flags aren't supported yet
 161                                    -- they will be used to support the
 162                                    full-screen DGA-like mode. */
 163     DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
 164     DRM_HALT_CUR_QUEUES = 0x20  /**< Halt all current queues */
 165 } drmLockFlags;
 166
 167 typedef enum {
 168     DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
 169                                      never swapped. */
 170     DRM_CONTEXT_2DONLY    = 0x02  /**< This context is for 2D rendering only. */
 171 } drm_context_tFlags, *drm_context_tFlagsPtr;
 172
 173 typedef struct _drmBufDesc {
 174     int              count;       /**< Number of buffers of this size */
 175     int              size;        /**< Size in bytes */
 176     int              low_mark;    /**< Low water mark */
 177     int              high_mark;   /**< High water mark */
 178 } drmBufDesc, *drmBufDescPtr;
 179
 180 typedef struct _drmBufInfo {
 181     int              count;       /**< Number of buffers described in list */
 182     drmBufDescPtr    list;        /**< List of buffer descriptions */
 183 } drmBufInfo, *drmBufInfoPtr;
 184
 185 typedef struct _drmBuf {
 186     int              idx;         /**< Index into the master buffer list */
 187     int              total;       /**< Buffer size */
 188     int              used;        /**< Amount of buffer in use (for DMA) */
 189     drmAddress       address;     /**< Address */
 190 } drmBuf, *drmBufPtr;
 191
 192 /**
 193  * Buffer mapping information.
 194  *
 195  * Used by drmMapBufs() and drmUnmapBufs() to store information about the
 196  * mapped buffers.
 197  */
 198 typedef struct _drmBufMap {
 199     int              count;       /**< Number of buffers mapped */
 200     drmBufPtr        list;        /**< Buffers */
 201 } drmBufMap, *drmBufMapPtr;
 202
 203 typedef struct _drmLock {
 204     volatile unsigned int lock;
 205     char                      padding[60];
 206     /* This is big enough for most current (and future?) architectures:
 207        DEC Alpha:              32 bytes
 208        Intel Merced:           ?
 209        Intel P5/PPro/PII/PIII: 32 bytes
 210        Intel StrongARM:        32 bytes
 211        Intel i386/i486:        16 bytes
 212        MIPS:                   32 bytes (?)
 213        Motorola 68k:           16 bytes
 214        Motorola PowerPC:       32 bytes
 215        Sun SPARC:              32 bytes
 216     */
 217 } drmLock, *drmLockPtr;
 218
 219 /**
 220  * Indices here refer to the offset into
 221  * list in drmBufInfo
 222  */
 223 typedef struct _drmDMAReq {
 224     drm_context_t    context;     /**< Context handle */
 225     int           send_count;     /**< Number of buffers to send */
 226     int           *send_list;     /**< List of handles to buffers */
 227     int           *send_sizes;    /**< Lengths of data to send, in bytes */
 228     drmDMAFlags   flags;          /**< Flags */
 229     int           request_count;  /**< Number of buffers requested */
 230     int           request_size;   /**< Desired size of buffers requested */
 231     int           *request_list;  /**< Buffer information */
 232     int           *request_sizes; /**< Minimum acceptable sizes */
 233     int           granted_count;  /**< Number of buffers granted at this size */
 234 } drmDMAReq, *drmDMAReqPtr;
 235
 236 typedef struct _drmRegion {
 237     drm_handle_t     handle;
 238     unsigned int  offset;
 239     drmSize       size;
 240     drmAddress    map;
 241 } drmRegion, *drmRegionPtr;
 242
 243 typedef struct _drmTextureRegion {
 244     unsigned char next;
 245     unsigned char prev;
 246     unsigned char in_use;
 247     unsigned char padding;      /**< Explicitly pad this out */
 248     unsigned int  age;
 249 } drmTextureRegion, *drmTextureRegionPtr;
 250
 251
 252 typedef enum {
 253     DRM_VBLANK_ABSOLUTE = 0x0,  /**< Wait for specific vblank sequence number */
 254     DRM_VBLANK_RELATIVE = 0x1,  /**< Wait for given number of vblanks */
 255     DRM_VBLANK_SIGNAL   = 0x40000000    /* Send signal instead of blocking */
 256 } drmVBlankSeqType;
 257
 258 typedef struct _drmVBlankReq {
 259         drmVBlankSeqType type;
 260         unsigned int sequence;
 261         unsigned long signal;
 262 } drmVBlankReq, *drmVBlankReqPtr;
 263
 264 typedef struct _drmVBlankReply {
 265         drmVBlankSeqType type;
 266         unsigned int sequence;
 267         long tval_sec;
 268         long tval_usec;
 269 } drmVBlankReply, *drmVBlankReplyPtr;
 270
 271 typedef union _drmVBlank {
 272         drmVBlankReq request;
 273         drmVBlankReply reply;
 274 } drmVBlank, *drmVBlankPtr;
 275
 276 typedef struct _drmSetVersion {
 277         int drm_di_major;
 278         int drm_di_minor;
 279         int drm_dd_major;
 280         int drm_dd_minor;
 281 } drmSetVersion, *drmSetVersionPtr;
 282
 283 typedef struct _drmFence{
 284         unsigned handle;
 285         int class;
 286         unsigned type;
 287         unsigned signaled;
 288 } drmFence;
 289
 290 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
 291
 292 #define DRM_LOCK_HELD  0x80000000U /**< Hardware lock is held */
 293 #define DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */
 294
 295 #if defined(__GNUC__) && (__GNUC__ >= 2)
 296 # if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
 297                                 /* Reflect changes here to drmP.h */
 298 #define DRM_CAS(lock,old,new,__ret)                                    \
 299         do {                                                           \
 300                 int __dummy;    /* Can't mark eax as clobbered */      \
 301                 __asm__ __volatile__(                                  \
 302                         "lock ; cmpxchg %4,%1\n\t"                     \
 303                         "setnz %0"                                     \
 304                         : "=d" (__ret),                                \
 305                           "=m" (__drm_dummy_lock(lock)),               \
 306                           "=a" (__dummy)                               \
 307                         : "2" (old),                                   \
 308                           "r" (new));                                  \
 309         } while (0)
 310
 311 #elif defined(__alpha__)
 312
 313 #define DRM_CAS(lock, old, new, ret)            \
 314         do {                                    \
 315                 int old32;                      \
 316                 int cur32;                      \
 317                 __asm__ __volatile__(           \
 318                 "       mb\n"                   \
 319                 "       zap   %4, 0xF0, %0\n"   \
 320                 "       ldl_l %1, %2\n"         \
 321                 "       zap   %1, 0xF0, %1\n"   \
 322                 "       cmpeq %0, %1, %1\n"     \
 323                 "       beq   %1, 1f\n"         \
 324                 "       bis   %5, %5, %1\n"     \
 325                 "       stl_c %1, %2\n"         \
 326                 "1:     xor   %1, 1, %1\n"      \
 327                 "       stl   %1, %3"           \
 328                 : "=r" (old32),                 \
 329                   "=&r" (cur32),                \
 330                    "=m" (__drm_dummy_lock(lock)),\
 331                    "=m" (ret)                   \
 332                 : "r" (old),                    \
 333                   "r" (new));                   \
 334         } while(0)
 335
 336 #elif defined(__sparc__)
 337
 338 #define DRM_CAS(lock,old,new,__ret)                             \
 339 do {    register unsigned int __old __asm("o0");                \
 340         register unsigned int __new __asm("o1");                \
 341         register volatile unsigned int *__lock __asm("o2");     \
 342         __old = old;                                            \
 343         __new = new;                                            \
 344         __lock = (volatile unsigned int *)lock;                 \
 345         __asm__ __volatile__(                                   \
 346                 /*"cas [%2], %3, %0"*/                          \
 347                 ".word 0xd3e29008\n\t"                          \
 348                 /*"membar #StoreStore | #StoreLoad"*/           \
 349                 ".word 0x8143e00a"                              \
 350                 : "=&r" (__new)                                 \
 351                 : "0" (__new),                                  \
 352                   "r" (__lock),                                 \
 353                   "r" (__old)                                   \
 354                 : "memory");                                    \
 355         __ret = (__new != __old);                               \
 356 } while(0)
 357
 358 #elif defined(__ia64__)
 359
 360 #ifdef __INTEL_COMPILER
 361 /* this currently generates bad code (missing stop bits)... */
 362 #include <ia64intrin.h>
 363
 364 #define DRM_CAS(lock,old,new,__ret)                                           \
 365         do {                                                                  \
 366                 unsigned long __result, __old = (old) & 0xffffffff;             \
 367                 __mf();                                                         \
 368                 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
 369                 __ret = (__result) != (__old);                                  \
 370 /*              __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
 371                                                      (old), (new))            \
 372                          != (old));                                           */\
 373         } while (0)
 374
 375 #else
 376 #define DRM_CAS(lock,old,new,__ret)                                       \
 377         do {                                                              \
 378                 unsigned int __result, __old = (old);                     \
 379                 __asm__ __volatile__(                                     \
 380                         "mf\n"                                            \
 381                         "mov ar.ccv=%2\n"                                 \
 382                         ";;\n"                                            \
 383                         "cmpxchg4.acq %0=%1,%3,ar.ccv"                    \
 384                         : "=r" (__result), "=m" (__drm_dummy_lock(lock))  \
 385                         : "r" ((unsigned long)__old), "r" (new)                   \
 386                         : "memory");                                      \
 387                 __ret = (__result) != (__old);                            \
 388         } while (0)
 389
 390 #endif
 391
 392 #elif defined(__powerpc__)
 393
 394 #define DRM_CAS(lock,old,new,__ret)                     \
 395         do {                                            \
 396                 __asm__ __volatile__(                   \
 397                         "sync;"                         \
 398                         "0:    lwarx %0,0,%1;"          \
 399                         "      xor. %0,%3,%0;"          \
 400                         "      bne 1f;"                 \
 401                         "      stwcx. %2,0,%1;"         \
 402                         "      bne- 0b;"                \
 403                         "1:    "                        \
 404                         "sync;"                         \
 405                 : "=&r"(__ret)                          \
 406                 : "r"(lock), "r"(new), "r"(old)         \
 407                 : "cr0", "memory");                     \
 408         } while (0)
 409
 410 #endif /* architecture */
 411 #endif /* __GNUC__ >= 2 */
 412
 413 #ifndef DRM_CAS
 414 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
 415 #endif
 416
 417 #if defined(__alpha__) || defined(__powerpc__)
 418 #define DRM_CAS_RESULT(_result)         int _result
 419 #else
 420 #define DRM_CAS_RESULT(_result)         char _result
 421 #endif
 422
 423 #define DRM_LIGHT_LOCK(fd,lock,context)                                \
 424         do {                                                           \
 425                 DRM_CAS_RESULT(__ret);                                 \
 426                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 427                 if (__ret) drmGetLock(fd,context,0);                   \
 428         } while(0)
 429
 430                                 /* This one counts fast locks -- for
 431                                    benchmarking only. */
 432 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count)                    \
 433         do {                                                           \
 434                 DRM_CAS_RESULT(__ret);                                 \
 435                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 436                 if (__ret) drmGetLock(fd,context,0);                   \
 437                 else       ++count;                                    \
 438         } while(0)
 439
 440 #define DRM_LOCK(fd,lock,context,flags)                                \
 441         do {                                                           \
 442                 if (flags) drmGetLock(fd,context,flags);               \
 443                 else       DRM_LIGHT_LOCK(fd,lock,context);            \
 444         } while(0)
 445
 446 #define DRM_UNLOCK(fd,lock,context)                                    \
 447         do {                                                           \
 448                 DRM_CAS_RESULT(__ret);                                 \
 449                 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret);     \
 450                 if (__ret) drmUnlock(fd,context);                      \
 451         } while(0)
 452
 453                                 /* Simple spin locks */
 454 #define DRM_SPINLOCK(spin,val)                                         \
 455         do {                                                           \
 456             DRM_CAS_RESULT(__ret);                                     \
 457             do {                                                       \
 458                 DRM_CAS(spin,0,val,__ret);                             \
 459                 if (__ret) while ((spin)->lock);                       \
 460             } while (__ret);                                           \
 461         } while(0)
 462
 463 #define DRM_SPINLOCK_TAKE(spin,val)                                    \
 464         do {                                                           \
 465             DRM_CAS_RESULT(__ret);                                     \
 466             int  cur;                                                  \
 467             do {                                                       \
 468                 cur = (*spin).lock;                                    \
 469                 DRM_CAS(spin,cur,val,__ret);                           \
 470             } while (__ret);                                           \
 471         } while(0)
 472
 473 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret)                       \
 474         do {                                                           \
 475             int  __i;                                                  \
 476             __ret = 1;                                                 \
 477             for (__i = 0; __ret && __i < count; __i++) {               \
 478                 DRM_CAS(spin,0,val,__ret);                             \
 479                 if (__ret) for (;__i < count && (spin)->lock; __i++);  \
 480             }                                                          \
 481         } while(0)
 482
 483 #define DRM_SPINUNLOCK(spin,val)                                       \
 484         do {                                                           \
 485             DRM_CAS_RESULT(__ret);                                     \
 486             if ((*spin).lock == val) { /* else server stole lock */    \
 487                 do {                                                   \
 488                     DRM_CAS(spin,val,0,__ret);                         \
 489                 } while (__ret);                                       \
 490             }                                                          \
 491         } while(0)
 492
 493 /* General user-level programmer's API: unprivileged */
 494 extern int           drmAvailable(void);
 495 extern int           drmOpen(const char *name, const char *busid);
 496 extern int           drmClose(int fd);
 497 extern drmVersionPtr drmGetVersion(int fd);
 498 extern drmVersionPtr drmGetLibVersion(int fd);
 499 extern void          drmFreeVersion(drmVersionPtr);
 500 extern int           drmGetMagic(int fd, drm_magic_t * magic);
 501 extern char          *drmGetBusid(int fd);
 502 extern int           drmGetInterruptFromBusID(int fd, int busnum, int devnum,
 503                                               int funcnum);
 504 extern int           drmGetMap(int fd, int idx, drm_handle_t *offset,
 505                                drmSize *size, drmMapType *type,
 506                                drmMapFlags *flags, drm_handle_t *handle,
 507                                int *mtrr);
 508 extern int           drmGetClient(int fd, int idx, int *auth, int *pid,
 509                                   int *uid, unsigned long *magic,
 510                                   unsigned long *iocs);
 511 extern int           drmGetStats(int fd, drmStatsT *stats);
 512 extern int           drmSetInterfaceVersion(int fd, drmSetVersion *version);
 513 extern int           drmCommandNone(int fd, unsigned long drmCommandIndex);
 514 extern int           drmCommandRead(int fd, unsigned long drmCommandIndex,
 515                                     void *data, unsigned long size);
 516 extern int           drmCommandWrite(int fd, unsigned long drmCommandIndex,
 517                                      void *data, unsigned long size);
 518 extern int           drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
 519                                          void *data, unsigned long size);
 520
 521 /* General user-level programmer's API: X server (root) only  */
 522 extern void          drmFreeBusid(const char *busid);
 523 extern int           drmSetBusid(int fd, const char *busid);
 524 extern int           drmAuthMagic(int fd, drm_magic_t magic);
 525 extern int           drmAddMap(int fd,
 526                                drm_handle_t offset,
 527                                drmSize size,
 528                                drmMapType type,
 529                                drmMapFlags flags,
 530                                drm_handle_t * handle);
 531 extern int           drmRmMap(int fd, drm_handle_t handle);
 532 extern int           drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
 533                                                  drm_handle_t handle);
 534
 535 extern int           drmAddBufs(int fd, int count, int size,
 536                                 drmBufDescFlags flags,
 537                                 int agp_offset);
 538 extern int           drmMarkBufs(int fd, double low, double high);
 539 extern int           drmCreateContext(int fd, drm_context_t * handle);
 540 extern int           drmSetContextFlags(int fd, drm_context_t context,
 541                                         drm_context_tFlags flags);
 542 extern int           drmGetContextFlags(int fd, drm_context_t context,
 543                                         drm_context_tFlagsPtr flags);
 544 extern int           drmAddContextTag(int fd, drm_context_t context, void *tag);
 545 extern int           drmDelContextTag(int fd, drm_context_t context);
 546 extern void          *drmGetContextTag(int fd, drm_context_t context);
 547 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
 548 extern void          drmFreeReservedContextList(drm_context_t *);
 549 extern int           drmSwitchToContext(int fd, drm_context_t context);
 550 extern int           drmDestroyContext(int fd, drm_context_t handle);
 551 extern int           drmCreateDrawable(int fd, drm_drawable_t * handle);
 552 extern int           drmDestroyDrawable(int fd, drm_drawable_t handle);
 553 extern int           drmCtlInstHandler(int fd, int irq);
 554 extern int           drmCtlUninstHandler(int fd);
 555
 556 /* General user-level programmer's API: authenticated client and/or X */
 557 extern int           drmMap(int fd,
 558                             drm_handle_t handle,
 559                             drmSize size,
 560                             drmAddressPtr address);
 561 extern int           drmUnmap(drmAddress address, drmSize size);
 562 extern drmBufInfoPtr drmGetBufInfo(int fd);
 563 extern drmBufMapPtr  drmMapBufs(int fd);
 564 extern int           drmUnmapBufs(drmBufMapPtr bufs);
 565 extern int           drmDMA(int fd, drmDMAReqPtr request);
 566 extern int           drmFreeBufs(int fd, int count, int *list);
 567 extern int           drmGetLock(int fd,
 568                                 drm_context_t context,
 569                                 drmLockFlags flags);
 570 extern int           drmUnlock(int fd, drm_context_t context);
 571 extern int           drmFinish(int fd, int context, drmLockFlags flags);
 572 extern int           drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
 573                                                  drm_handle_t * handle);
 574
 575 /* AGP/GART support: X server (root) only */
 576 extern int           drmAgpAcquire(int fd);
 577 extern int           drmAgpRelease(int fd);
 578 extern int           drmAgpEnable(int fd, unsigned long mode);
 579 extern int           drmAgpAlloc(int fd, unsigned long size,
 580                                  unsigned long type, unsigned long *address,
 581                                  drm_handle_t *handle);
 582 extern int           drmAgpFree(int fd, drm_handle_t handle);
 583 extern int           drmAgpBind(int fd, drm_handle_t handle,
 584                                 unsigned long offset);
 585 extern int           drmAgpUnbind(int fd, drm_handle_t handle);
 586
 587 /* AGP/GART info: authenticated client and/or X */
 588 extern int           drmAgpVersionMajor(int fd);
 589 extern int           drmAgpVersionMinor(int fd);
 590 extern unsigned long drmAgpGetMode(int fd);
 591 extern unsigned long drmAgpBase(int fd); /* Physical location */
 592 extern unsigned long drmAgpSize(int fd); /* Bytes */
 593 extern unsigned long drmAgpMemoryUsed(int fd);
 594 extern unsigned long drmAgpMemoryAvail(int fd);
 595 extern unsigned int  drmAgpVendorId(int fd);
 596 extern unsigned int  drmAgpDeviceId(int fd);
 597
 598 /* PCI scatter/gather support: X server (root) only */
 599 extern int           drmScatterGatherAlloc(int fd, unsigned long size,
 600                                            drm_handle_t *handle);
 601 extern int           drmScatterGatherFree(int fd, drm_handle_t handle);
 602
 603 extern int           drmWaitVBlank(int fd, drmVBlankPtr vbl);
 604
 605 /* Fencing */
 606
 607 extern int           drmFenceCreate(int fd, int shareable, int class,
 608                                     unsigned type, int emit,
 609                                     drmFence *fence);
 610 extern int           drmFenceDestroy(int fd, const drmFence *fence);
 611 extern int           drmFenceReference(int fd, unsigned handle, drmFence *fence);
 612 extern int           drmFenceUnreference(int fd, const drmFence *fence);
 613 extern int           drmFenceFlush(int fd, drmFence *fence, unsigned flush_type);
 614 extern int           drmFenceSignaled(int fd, drmFence *fence);
 615 extern int           drmFenceWait(int fd, drmFence *fence, unsigned flush_type,
 616                                   int lazy, int ignore_signals);
 617 extern int           drmFenceEmit(int fd, drmFence *fence, unsigned emit_type);
 618
 619
 620
 621 /* Support routines */
 622 extern int           drmError(int err, const char *label);
 623 extern void          *drmMalloc(int size);
 624 extern void          drmFree(void *pt);
 625
 626 /* Hash table routines */
 627 extern void *drmHashCreate(void);
 628 extern int  drmHashDestroy(void *t);
 629 extern int  drmHashLookup(void *t, unsigned long key, void **value);
 630 extern int  drmHashInsert(void *t, unsigned long key, void *value);
 631 extern int  drmHashDelete(void *t, unsigned long key);
 632 extern int  drmHashFirst(void *t, unsigned long *key, void **value);
 633 extern int  drmHashNext(void *t, unsigned long *key, void **value);
 634
 635 /* PRNG routines */
 636 extern void          *drmRandomCreate(unsigned long seed);
 637 extern int           drmRandomDestroy(void *state);
 638 extern unsigned long drmRandom(void *state);
 639 extern double        drmRandomDouble(void *state);
 640
 641 /* Skip list routines */
 642
 643 extern void *drmSLCreate(void);
 644 extern int  drmSLDestroy(void *l);
 645 extern int  drmSLLookup(void *l, unsigned long key, void **value);
 646 extern int  drmSLInsert(void *l, unsigned long key, void *value);
 647 extern int  drmSLDelete(void *l, unsigned long key);
 648 extern int  drmSLNext(void *l, unsigned long *key, void **value);
 649 extern int  drmSLFirst(void *l, unsigned long *key, void **value);
 650 extern void drmSLDump(void *l);
 651 extern int  drmSLLookupNeighbors(void *l, unsigned long key,
 652                                  unsigned long *prev_key, void **prev_value,
 653                                  unsigned long *next_key, void **next_value);
 654
 655 #endif