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 <stdint.h>
  40 #include <drm.h>
  41
  42                                 /* Defaults, if nothing set in xf86config */
  43 #define DRM_DEV_UID      0
  44 #define DRM_DEV_GID      0
  45 /* Default /dev/dri directory permissions 0755 */
  46 #define DRM_DEV_DIRMODE         \
  47         (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
  48 #define DRM_DEV_MODE     (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
  49
  50 #define DRM_DIR_NAME  "/dev/dri"
  51 #define DRM_DEV_NAME  "%s/card%d"
  52 #define DRM_CONTROL_DEV_NAME  "%s/controlD%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 int drmIoctl(int fd, unsigned long request, void *arg);
  79 extern void *drmGetHashTable(void);
  80 extern drmHashEntry *drmGetEntry(int fd);
  81
  82 /**
  83  * Driver version information.
  84  *
  85  * \sa drmGetVersion() and drmSetVersion().
  86  */
  87 typedef struct _drmVersion {
  88     int     version_major;        /**< Major version */
  89     int     version_minor;        /**< Minor version */
  90     int     version_patchlevel;   /**< Patch level */
  91     int     name_len;             /**< Length of name buffer */
  92     char    *name;                /**< Name of driver */
  93     int     date_len;             /**< Length of date buffer */
  94     char    *date;                /**< User-space buffer to hold date */
  95     int     desc_len;             /**< Length of desc buffer */
  96     char    *desc;                /**< User-space buffer to hold desc */
  97 } drmVersion, *drmVersionPtr;
  98
  99 typedef struct _drmStats {
 100     unsigned long count;             /**< Number of data */
 101     struct {
 102         unsigned long value;         /**< Value from kernel */
 103         const char    *long_format;  /**< Suggested format for long_name */
 104         const char    *long_name;    /**< Long name for value */
 105         const char    *rate_format;  /**< Suggested format for rate_name */
 106         const char    *rate_name;    /**< Short name for value per second */
 107         int           isvalue;       /**< True if value (vs. counter) */
 108         const char    *mult_names;   /**< Multiplier names (e.g., "KGM") */
 109         int           mult;          /**< Multiplier value (e.g., 1024) */
 110         int           verbose;       /**< Suggest only in verbose output */
 111     } data[15];
 112 } drmStatsT;
 113
 114
 115                                 /* All of these enums *MUST* match with the
 116                                    kernel implementation -- so do *NOT*
 117                                    change them!  (The drmlib implementation
 118                                    will just copy the flags instead of
 119                                    translating them.) */
 120 typedef enum {
 121     DRM_FRAME_BUFFER    = 0,      /**< WC, no caching, no core dump */
 122     DRM_REGISTERS       = 1,      /**< no caching, no core dump */
 123     DRM_SHM             = 2,      /**< shared, cached */
 124     DRM_AGP             = 3,      /**< AGP/GART */
 125     DRM_SCATTER_GATHER  = 4,      /**< PCI scatter/gather */
 126     DRM_CONSISTENT      = 5       /**< PCI consistent */
 127 } drmMapType;
 128
 129 typedef enum {
 130     DRM_RESTRICTED      = 0x0001, /**< Cannot be mapped to client-virtual */
 131     DRM_READ_ONLY       = 0x0002, /**< Read-only in client-virtual */
 132     DRM_LOCKED          = 0x0004, /**< Physical pages locked */
 133     DRM_KERNEL          = 0x0008, /**< Kernel requires access */
 134     DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
 135     DRM_CONTAINS_LOCK   = 0x0020, /**< SHM page that contains lock */
 136     DRM_REMOVABLE       = 0x0040  /**< Removable mapping */
 137 } drmMapFlags;
 138
 139 /**
 140  * \warning These values *MUST* match drm.h
 141  */
 142 typedef enum {
 143     /** \name Flags for DMA buffer dispatch */
 144     /*@{*/
 145     DRM_DMA_BLOCK        = 0x01, /**<
 146                                   * Block until buffer dispatched.
 147                                   *
 148                                   * \note the buffer may not yet have been
 149                                   * processed by the hardware -- getting a
 150                                   * hardware lock with the hardware quiescent
 151                                   * will ensure that the buffer has been
 152                                   * processed.
 153                                   */
 154     DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
 155     DRM_DMA_PRIORITY     = 0x04, /**< High priority dispatch */
 156     /*@}*/
 157
 158     /** \name Flags for DMA buffer request */
 159     /*@{*/
 160     DRM_DMA_WAIT         = 0x10, /**< Wait for free buffers */
 161     DRM_DMA_SMALLER_OK   = 0x20, /**< Smaller-than-requested buffers OK */
 162     DRM_DMA_LARGER_OK    = 0x40  /**< Larger-than-requested buffers OK */
 163     /*@}*/
 164 } drmDMAFlags;
 165
 166 typedef enum {
 167     DRM_PAGE_ALIGN       = 0x01,
 168     DRM_AGP_BUFFER       = 0x02,
 169     DRM_SG_BUFFER        = 0x04,
 170     DRM_FB_BUFFER        = 0x08,
 171     DRM_PCI_BUFFER_RO    = 0x10
 172 } drmBufDescFlags;
 173
 174 typedef enum {
 175     DRM_LOCK_READY      = 0x01, /**< Wait until hardware is ready for DMA */
 176     DRM_LOCK_QUIESCENT  = 0x02, /**< Wait until hardware quiescent */
 177     DRM_LOCK_FLUSH      = 0x04, /**< Flush this context's DMA queue first */
 178     DRM_LOCK_FLUSH_ALL  = 0x08, /**< Flush all DMA queues first */
 179                                 /* These *HALT* flags aren't supported yet
 180                                    -- they will be used to support the
 181                                    full-screen DGA-like mode. */
 182     DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
 183     DRM_HALT_CUR_QUEUES = 0x20  /**< Halt all current queues */
 184 } drmLockFlags;
 185
 186 typedef enum {
 187     DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
 188                                      never swapped. */
 189     DRM_CONTEXT_2DONLY    = 0x02  /**< This context is for 2D rendering only. */
 190 } drm_context_tFlags, *drm_context_tFlagsPtr;
 191
 192 typedef struct _drmBufDesc {
 193     int              count;       /**< Number of buffers of this size */
 194     int              size;        /**< Size in bytes */
 195     int              low_mark;    /**< Low water mark */
 196     int              high_mark;   /**< High water mark */
 197 } drmBufDesc, *drmBufDescPtr;
 198
 199 typedef struct _drmBufInfo {
 200     int              count;       /**< Number of buffers described in list */
 201     drmBufDescPtr    list;        /**< List of buffer descriptions */
 202 } drmBufInfo, *drmBufInfoPtr;
 203
 204 typedef struct _drmBuf {
 205     int              idx;         /**< Index into the master buffer list */
 206     int              total;       /**< Buffer size */
 207     int              used;        /**< Amount of buffer in use (for DMA) */
 208     drmAddress       address;     /**< Address */
 209 } drmBuf, *drmBufPtr;
 210
 211 /**
 212  * Buffer mapping information.
 213  *
 214  * Used by drmMapBufs() and drmUnmapBufs() to store information about the
 215  * mapped buffers.
 216  */
 217 typedef struct _drmBufMap {
 218     int              count;       /**< Number of buffers mapped */
 219     drmBufPtr        list;        /**< Buffers */
 220 } drmBufMap, *drmBufMapPtr;
 221
 222 typedef struct _drmLock {
 223     volatile unsigned int lock;
 224     char                      padding[60];
 225     /* This is big enough for most current (and future?) architectures:
 226        DEC Alpha:              32 bytes
 227        Intel Merced:           ?
 228        Intel P5/PPro/PII/PIII: 32 bytes
 229        Intel StrongARM:        32 bytes
 230        Intel i386/i486:        16 bytes
 231        MIPS:                   32 bytes (?)
 232        Motorola 68k:           16 bytes
 233        Motorola PowerPC:       32 bytes
 234        Sun SPARC:              32 bytes
 235     */
 236 } drmLock, *drmLockPtr;
 237
 238 /**
 239  * Indices here refer to the offset into
 240  * list in drmBufInfo
 241  */
 242 typedef struct _drmDMAReq {
 243     drm_context_t    context;     /**< Context handle */
 244     int           send_count;     /**< Number of buffers to send */
 245     int           *send_list;     /**< List of handles to buffers */
 246     int           *send_sizes;    /**< Lengths of data to send, in bytes */
 247     drmDMAFlags   flags;          /**< Flags */
 248     int           request_count;  /**< Number of buffers requested */
 249     int           request_size;   /**< Desired size of buffers requested */
 250     int           *request_list;  /**< Buffer information */
 251     int           *request_sizes; /**< Minimum acceptable sizes */
 252     int           granted_count;  /**< Number of buffers granted at this size */
 253 } drmDMAReq, *drmDMAReqPtr;
 254
 255 typedef struct _drmRegion {
 256     drm_handle_t     handle;
 257     unsigned int  offset;
 258     drmSize       size;
 259     drmAddress    map;
 260 } drmRegion, *drmRegionPtr;
 261
 262 typedef struct _drmTextureRegion {
 263     unsigned char next;
 264     unsigned char prev;
 265     unsigned char in_use;
 266     unsigned char padding;      /**< Explicitly pad this out */
 267     unsigned int  age;
 268 } drmTextureRegion, *drmTextureRegionPtr;
 269
 270
 271 typedef enum {
 272     DRM_VBLANK_ABSOLUTE = 0x0,  /**< Wait for specific vblank sequence number */
 273     DRM_VBLANK_RELATIVE = 0x1,  /**< Wait for given number of vblanks */
 274     DRM_VBLANK_EVENT = 0x4000000,       /**< Send event instead of blocking */
 275     DRM_VBLANK_FLIP = 0x8000000,        /**< Scheduled buffer swap should flip */
 276     DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
 277     DRM_VBLANK_SECONDARY = 0x20000000,  /**< Secondary display controller */
 278     DRM_VBLANK_SIGNAL   = 0x40000000    /* Send signal instead of blocking */
 279 } drmVBlankSeqType;
 280
 281 typedef struct _drmVBlankReq {
 282         drmVBlankSeqType type;
 283         unsigned int sequence;
 284         unsigned long signal;
 285 } drmVBlankReq, *drmVBlankReqPtr;
 286
 287 typedef struct _drmVBlankReply {
 288         drmVBlankSeqType type;
 289         unsigned int sequence;
 290         long tval_sec;
 291         long tval_usec;
 292 } drmVBlankReply, *drmVBlankReplyPtr;
 293
 294 typedef union _drmVBlank {
 295         drmVBlankReq request;
 296         drmVBlankReply reply;
 297 } drmVBlank, *drmVBlankPtr;
 298
 299 typedef struct _drmSetVersion {
 300         int drm_di_major;
 301         int drm_di_minor;
 302         int drm_dd_major;
 303         int drm_dd_minor;
 304 } drmSetVersion, *drmSetVersionPtr;
 305
 306 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
 307
 308 #define DRM_LOCK_HELD  0x80000000U /**< Hardware lock is held */
 309 #define DRM_LOCK_CONT  0x40000000U /**< Hardware lock is contended */
 310
 311 #if defined(__GNUC__) && (__GNUC__ >= 2)
 312 # if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
 313                                 /* Reflect changes here to drmP.h */
 314 #define DRM_CAS(lock,old,new,__ret)                                    \
 315         do {                                                           \
 316                 int __dummy;    /* Can't mark eax as clobbered */      \
 317                 __asm__ __volatile__(                                  \
 318                         "lock ; cmpxchg %4,%1\n\t"                     \
 319                         "setnz %0"                                     \
 320                         : "=d" (__ret),                                \
 321                           "=m" (__drm_dummy_lock(lock)),               \
 322                           "=a" (__dummy)                               \
 323                         : "2" (old),                                   \
 324                           "r" (new));                                  \
 325         } while (0)
 326
 327 #elif defined(__alpha__)
 328
 329 #define DRM_CAS(lock, old, new, ret)            \
 330         do {                                    \
 331                 int tmp, old32;                 \
 332                 __asm__ __volatile__(           \
 333                 "       addl    $31, %5, %3\n"  \
 334                 "1:     ldl_l   %0, %2\n"       \
 335                 "       cmpeq   %0, %3, %1\n"   \
 336                 "       beq     %1, 2f\n"       \
 337                 "       mov     %4, %0\n"       \
 338                 "       stl_c   %0, %2\n"       \
 339                 "       beq     %0, 3f\n"       \
 340                 "       mb\n"                   \
 341                 "2:     cmpeq   %1, 0, %1\n"    \
 342                 ".subsection 2\n"               \
 343                 "3:     br      1b\n"           \
 344                 ".previous"                     \
 345                 : "=&r"(tmp), "=&r"(ret),       \
 346                   "=m"(__drm_dummy_lock(lock)), \
 347                   "=&r"(old32)                  \
 348                 : "r"(new), "r"(old)            \
 349                 : "memory");                    \
 350         } while (0)
 351
 352 #elif defined(__sparc__)
 353
 354 #define DRM_CAS(lock,old,new,__ret)                             \
 355 do {    register unsigned int __old __asm("o0");                \
 356         register unsigned int __new __asm("o1");                \
 357         register volatile unsigned int *__lock __asm("o2");     \
 358         __old = old;                                            \
 359         __new = new;                                            \
 360         __lock = (volatile unsigned int *)lock;                 \
 361         __asm__ __volatile__(                                   \
 362                 /*"cas [%2], %3, %0"*/                          \
 363                 ".word 0xd3e29008\n\t"                          \
 364                 /*"membar #StoreStore | #StoreLoad"*/           \
 365                 ".word 0x8143e00a"                              \
 366                 : "=&r" (__new)                                 \
 367                 : "0" (__new),                                  \
 368                   "r" (__lock),                                 \
 369                   "r" (__old)                                   \
 370                 : "memory");                                    \
 371         __ret = (__new != __old);                               \
 372 } while(0)
 373
 374 #elif defined(__ia64__)
 375
 376 #ifdef __INTEL_COMPILER
 377 /* this currently generates bad code (missing stop bits)... */
 378 #include <ia64intrin.h>
 379
 380 #define DRM_CAS(lock,old,new,__ret)                                           \
 381         do {                                                                  \
 382                 unsigned long __result, __old = (old) & 0xffffffff;             \
 383                 __mf();                                                         \
 384                 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
 385                 __ret = (__result) != (__old);                                  \
 386 /*              __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
 387                                                      (old), (new))            \
 388                          != (old));                                           */\
 389         } while (0)
 390
 391 #else
 392 #define DRM_CAS(lock,old,new,__ret)                                       \
 393         do {                                                              \
 394                 unsigned int __result, __old = (old);                     \
 395                 __asm__ __volatile__(                                     \
 396                         "mf\n"                                            \
 397                         "mov ar.ccv=%2\n"                                 \
 398                         ";;\n"                                            \
 399                         "cmpxchg4.acq %0=%1,%3,ar.ccv"                    \
 400                         : "=r" (__result), "=m" (__drm_dummy_lock(lock))  \
 401                         : "r" ((unsigned long)__old), "r" (new)                   \
 402                         : "memory");                                      \
 403                 __ret = (__result) != (__old);                            \
 404         } while (0)
 405
 406 #endif
 407
 408 #elif defined(__powerpc__)
 409
 410 #define DRM_CAS(lock,old,new,__ret)                     \
 411         do {                                            \
 412                 __asm__ __volatile__(                   \
 413                         "sync;"                         \
 414                         "0:    lwarx %0,0,%1;"          \
 415                         "      xor. %0,%3,%0;"          \
 416                         "      bne 1f;"                 \
 417                         "      stwcx. %2,0,%1;"         \
 418                         "      bne- 0b;"                \
 419                         "1:    "                        \
 420                         "sync;"                         \
 421                 : "=&r"(__ret)                          \
 422                 : "r"(lock), "r"(new), "r"(old)         \
 423                 : "cr0", "memory");                     \
 424         } while (0)
 425
 426 #endif /* architecture */
 427 #endif /* __GNUC__ >= 2 */
 428
 429 #ifndef DRM_CAS
 430 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
 431 #endif
 432
 433 #if defined(__alpha__)
 434 #define DRM_CAS_RESULT(_result)         long _result
 435 #elif defined(__powerpc__)
 436 #define DRM_CAS_RESULT(_result)         int _result
 437 #else
 438 #define DRM_CAS_RESULT(_result)         char _result
 439 #endif
 440
 441 #define DRM_LIGHT_LOCK(fd,lock,context)                                \
 442         do {                                                           \
 443                 DRM_CAS_RESULT(__ret);                                 \
 444                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 445                 if (__ret) drmGetLock(fd,context,0);                   \
 446         } while(0)
 447
 448                                 /* This one counts fast locks -- for
 449                                    benchmarking only. */
 450 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count)                    \
 451         do {                                                           \
 452                 DRM_CAS_RESULT(__ret);                                 \
 453                 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret);     \
 454                 if (__ret) drmGetLock(fd,context,0);                   \
 455                 else       ++count;                                    \
 456         } while(0)
 457
 458 #define DRM_LOCK(fd,lock,context,flags)                                \
 459         do {                                                           \
 460                 if (flags) drmGetLock(fd,context,flags);               \
 461                 else       DRM_LIGHT_LOCK(fd,lock,context);            \
 462         } while(0)
 463
 464 #define DRM_UNLOCK(fd,lock,context)                                    \
 465         do {                                                           \
 466                 DRM_CAS_RESULT(__ret);                                 \
 467                 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret);     \
 468                 if (__ret) drmUnlock(fd,context);                      \
 469         } while(0)
 470
 471                                 /* Simple spin locks */
 472 #define DRM_SPINLOCK(spin,val)                                         \
 473         do {                                                           \
 474             DRM_CAS_RESULT(__ret);                                     \
 475             do {                                                       \
 476                 DRM_CAS(spin,0,val,__ret);                             \
 477                 if (__ret) while ((spin)->lock);                       \
 478             } while (__ret);                                           \
 479         } while(0)
 480
 481 #define DRM_SPINLOCK_TAKE(spin,val)                                    \
 482         do {                                                           \
 483             DRM_CAS_RESULT(__ret);                                     \
 484             int  cur;                                                  \
 485             do {                                                       \
 486                 cur = (*spin).lock;                                    \
 487                 DRM_CAS(spin,cur,val,__ret);                           \
 488             } while (__ret);                                           \
 489         } while(0)
 490
 491 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret)                       \
 492         do {                                                           \
 493             int  __i;                                                  \
 494             __ret = 1;                                                 \
 495             for (__i = 0; __ret && __i < count; __i++) {               \
 496                 DRM_CAS(spin,0,val,__ret);                             \
 497                 if (__ret) for (;__i < count && (spin)->lock; __i++);  \
 498             }                                                          \
 499         } while(0)
 500
 501 #define DRM_SPINUNLOCK(spin,val)                                       \
 502         do {                                                           \
 503             DRM_CAS_RESULT(__ret);                                     \
 504             if ((*spin).lock == val) { /* else server stole lock */    \
 505                 do {                                                   \
 506                     DRM_CAS(spin,val,0,__ret);                         \
 507                 } while (__ret);                                       \
 508             }                                                          \
 509         } while(0)
 510
 511
 512
 513 /* General user-level programmer's API: unprivileged */
 514 extern int           drmAvailable(void);
 515 extern int           drmOpen(const char *name, const char *busid);
 516 extern int drmOpenControl(int minor);
 517 extern int           drmClose(int fd);
 518 extern drmVersionPtr drmGetVersion(int fd);
 519 extern drmVersionPtr drmGetLibVersion(int fd);
 520 extern void          drmFreeVersion(drmVersionPtr);
 521 extern int           drmGetMagic(int fd, drm_magic_t * magic);
 522 extern char          *drmGetBusid(int fd);
 523 extern int           drmGetInterruptFromBusID(int fd, int busnum, int devnum,
 524                                               int funcnum);
 525 extern int           drmGetMap(int fd, int idx, drm_handle_t *offset,
 526                                drmSize *size, drmMapType *type,
 527                                drmMapFlags *flags, drm_handle_t *handle,
 528                                int *mtrr);
 529 extern int           drmGetClient(int fd, int idx, int *auth, int *pid,
 530                                   int *uid, unsigned long *magic,
 531                                   unsigned long *iocs);
 532 extern int           drmGetStats(int fd, drmStatsT *stats);
 533 extern int           drmSetInterfaceVersion(int fd, drmSetVersion *version);
 534 extern int           drmCommandNone(int fd, unsigned long drmCommandIndex);
 535 extern int           drmCommandRead(int fd, unsigned long drmCommandIndex,
 536                                     void *data, unsigned long size);
 537 extern int           drmCommandWrite(int fd, unsigned long drmCommandIndex,
 538                                      void *data, unsigned long size);
 539 extern int           drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
 540                                          void *data, unsigned long size);
 541
 542 /* General user-level programmer's API: X server (root) only  */
 543 extern void          drmFreeBusid(const char *busid);
 544 extern int           drmSetBusid(int fd, const char *busid);
 545 extern int           drmAuthMagic(int fd, drm_magic_t magic);
 546 extern int           drmAddMap(int fd,
 547                                drm_handle_t offset,
 548                                drmSize size,
 549                                drmMapType type,
 550                                drmMapFlags flags,
 551                                drm_handle_t * handle);
 552 extern int           drmRmMap(int fd, drm_handle_t handle);
 553 extern int           drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
 554                                                  drm_handle_t handle);
 555
 556 extern int           drmAddBufs(int fd, int count, int size,
 557                                 drmBufDescFlags flags,
 558                                 int agp_offset);
 559 extern int           drmMarkBufs(int fd, double low, double high);
 560 extern int           drmCreateContext(int fd, drm_context_t * handle);
 561 extern int           drmSetContextFlags(int fd, drm_context_t context,
 562                                         drm_context_tFlags flags);
 563 extern int           drmGetContextFlags(int fd, drm_context_t context,
 564                                         drm_context_tFlagsPtr flags);
 565 extern int           drmAddContextTag(int fd, drm_context_t context, void *tag);
 566 extern int           drmDelContextTag(int fd, drm_context_t context);
 567 extern void          *drmGetContextTag(int fd, drm_context_t context);
 568 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
 569 extern void          drmFreeReservedContextList(drm_context_t *);
 570 extern int           drmSwitchToContext(int fd, drm_context_t context);
 571 extern int           drmDestroyContext(int fd, drm_context_t handle);
 572 extern int           drmCreateDrawable(int fd, drm_drawable_t * handle);
 573 extern int           drmDestroyDrawable(int fd, drm_drawable_t handle);
 574 extern int           drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
 575                                            drm_drawable_info_type_t type,
 576                                            unsigned int num, void *data);
 577 extern int           drmCtlInstHandler(int fd, int irq);
 578 extern int           drmCtlUninstHandler(int fd);
 579
 580 /* General user-level programmer's API: authenticated client and/or X */
 581 extern int           drmMap(int fd,
 582                             drm_handle_t handle,
 583                             drmSize size,
 584                             drmAddressPtr address);
 585 extern int           drmUnmap(drmAddress address, drmSize size);
 586 extern drmBufInfoPtr drmGetBufInfo(int fd);
 587 extern drmBufMapPtr  drmMapBufs(int fd);
 588 extern int           drmUnmapBufs(drmBufMapPtr bufs);
 589 extern int           drmDMA(int fd, drmDMAReqPtr request);
 590 extern int           drmFreeBufs(int fd, int count, int *list);
 591 extern int           drmGetLock(int fd,
 592                                 drm_context_t context,
 593                                 drmLockFlags flags);
 594 extern int           drmUnlock(int fd, drm_context_t context);
 595 extern int           drmFinish(int fd, int context, drmLockFlags flags);
 596 extern int           drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
 597                                                  drm_handle_t * handle);
 598
 599 /* AGP/GART support: X server (root) only */
 600 extern int           drmAgpAcquire(int fd);
 601 extern int           drmAgpRelease(int fd);
 602 extern int           drmAgpEnable(int fd, unsigned long mode);
 603 extern int           drmAgpAlloc(int fd, unsigned long size,
 604                                  unsigned long type, unsigned long *address,
 605                                  drm_handle_t *handle);
 606 extern int           drmAgpFree(int fd, drm_handle_t handle);
 607 extern int           drmAgpBind(int fd, drm_handle_t handle,
 608                                 unsigned long offset);
 609 extern int           drmAgpUnbind(int fd, drm_handle_t handle);
 610
 611 /* AGP/GART info: authenticated client and/or X */
 612 extern int           drmAgpVersionMajor(int fd);
 613 extern int           drmAgpVersionMinor(int fd);
 614 extern unsigned long drmAgpGetMode(int fd);
 615 extern unsigned long drmAgpBase(int fd); /* Physical location */
 616 extern unsigned long drmAgpSize(int fd); /* Bytes */
 617 extern unsigned long drmAgpMemoryUsed(int fd);
 618 extern unsigned long drmAgpMemoryAvail(int fd);
 619 extern unsigned int  drmAgpVendorId(int fd);
 620 extern unsigned int  drmAgpDeviceId(int fd);
 621
 622 /* PCI scatter/gather support: X server (root) only */
 623 extern int           drmScatterGatherAlloc(int fd, unsigned long size,
 624                                            drm_handle_t *handle);
 625 extern int           drmScatterGatherFree(int fd, drm_handle_t handle);
 626
 627 extern int           drmWaitVBlank(int fd, drmVBlankPtr vbl);
 628
 629 /* Support routines */
 630 extern void          drmSetServerInfo(drmServerInfoPtr info);
 631 extern int           drmError(int err, const char *label);
 632 extern void          *drmMalloc(int size);
 633 extern void          drmFree(void *pt);
 634
 635 /* Hash table routines */
 636 extern void *drmHashCreate(void);
 637 extern int  drmHashDestroy(void *t);
 638 extern int  drmHashLookup(void *t, unsigned long key, void **value);
 639 extern int  drmHashInsert(void *t, unsigned long key, void *value);
 640 extern int  drmHashDelete(void *t, unsigned long key);
 641 extern int  drmHashFirst(void *t, unsigned long *key, void **value);
 642 extern int  drmHashNext(void *t, unsigned long *key, void **value);
 643
 644 /* PRNG routines */
 645 extern void          *drmRandomCreate(unsigned long seed);
 646 extern int           drmRandomDestroy(void *state);
 647 extern unsigned long drmRandom(void *state);
 648 extern double        drmRandomDouble(void *state);
 649
 650 /* Skip list routines */
 651
 652 extern void *drmSLCreate(void);
 653 extern int  drmSLDestroy(void *l);
 654 extern int  drmSLLookup(void *l, unsigned long key, void **value);
 655 extern int  drmSLInsert(void *l, unsigned long key, void *value);
 656 extern int  drmSLDelete(void *l, unsigned long key);
 657 extern int  drmSLNext(void *l, unsigned long *key, void **value);
 658 extern int  drmSLFirst(void *l, unsigned long *key, void **value);
 659 extern void drmSLDump(void *l);
 660 extern int  drmSLLookupNeighbors(void *l, unsigned long key,
 661                                  unsigned long *prev_key, void **prev_value,
 662                                  unsigned long *next_key, void **next_value);
 663
 664 extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
 665 extern void drmCloseOnce(int fd);
 666 extern void drmMsg(const char *format, ...);
 667
 668 extern int drmSetMaster(int fd);
 669 extern int drmDropMaster(int fd);
 670
 671 #define DRM_EVENT_CONTEXT_VERSION 1
 672
 673 typedef struct _drmEventContext {
 674
 675         /* This struct is versioned so we can add more pointers if we
 676          * add more events. */
 677         int version;
 678
 679         void (*vblank_handler)(int fd,
 680                                unsigned int sequence,
 681                                unsigned int tv_sec,
 682                                unsigned int tv_usec,
 683                                void *user_data);
 684
 685 } drmEventContext, *drmEventContextPtr;
 686
 687 extern int drmHandleEvent(int fd, drmEventContextPtr evctx);
 688
 689 #endif