3 * OS-independent header for DRM user-level library interface.
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
9 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
10 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
11 * All Rights Reserved.
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:
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
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.
38 #include <sys/types.h>
42 #if defined(__cplusplus) || defined(c_plusplus)
47 #define DRM_MAX_MINOR 16
50 #if defined(__linux__)
52 #define DRM_IOCTL_NR(n) _IOC_NR(n)
53 #define DRM_IOC_VOID _IOC_NONE
54 #define DRM_IOC_READ _IOC_READ
55 #define DRM_IOC_WRITE _IOC_WRITE
56 #define DRM_IOC_READWRITE _IOC_READ|_IOC_WRITE
57 #define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
59 #else /* One of the *BSDs */
61 #include <sys/ioccom.h>
62 #define DRM_IOCTL_NR(n) ((n) & 0xff)
63 #define DRM_IOC_VOID IOC_VOID
64 #define DRM_IOC_READ IOC_OUT
65 #define DRM_IOC_WRITE IOC_IN
66 #define DRM_IOC_READWRITE IOC_INOUT
67 #define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
71 /* Defaults, if nothing set in xf86config */
74 /* Default /dev/dri directory permissions 0755 */
75 #define DRM_DEV_DIRMODE \
76 (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
77 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
79 #define DRM_DIR_NAME "/dev/dri"
80 #define DRM_DEV_NAME "%s/card%d"
81 #define DRM_CONTROL_DEV_NAME "%s/controlD%d"
82 #define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */
84 #define DRM_ERR_NO_DEVICE (-1001)
85 #define DRM_ERR_NO_ACCESS (-1002)
86 #define DRM_ERR_NOT_ROOT (-1003)
87 #define DRM_ERR_INVALID (-1004)
88 #define DRM_ERR_NO_FD (-1005)
90 #define DRM_AGP_NO_HANDLE 0
92 typedef unsigned int drmSize, *drmSizePtr; /**< For mapped regions */
93 typedef void *drmAddress, **drmAddressPtr; /**< For mapped regions */
95 typedef struct _drmServerInfo {
96 int (*debug_print)(const char *format, va_list ap);
97 int (*load_module)(const char *name);
98 void (*get_perms)(gid_t *, mode_t *);
99 } drmServerInfo, *drmServerInfoPtr;
101 typedef struct drmHashEntry {
103 void (*f)(int, void *, void *);
107 extern int drmIoctl(int fd, unsigned long request, void *arg);
108 extern void *drmGetHashTable(void);
109 extern drmHashEntry *drmGetEntry(int fd);
112 * Driver version information.
114 * \sa drmGetVersion() and drmSetVersion().
116 typedef struct _drmVersion {
117 int version_major; /**< Major version */
118 int version_minor; /**< Minor version */
119 int version_patchlevel; /**< Patch level */
120 int name_len; /**< Length of name buffer */
121 char *name; /**< Name of driver */
122 int date_len; /**< Length of date buffer */
123 char *date; /**< User-space buffer to hold date */
124 int desc_len; /**< Length of desc buffer */
125 char *desc; /**< User-space buffer to hold desc */
126 } drmVersion, *drmVersionPtr;
128 typedef struct _drmStats {
129 unsigned long count; /**< Number of data */
131 unsigned long value; /**< Value from kernel */
132 const char *long_format; /**< Suggested format for long_name */
133 const char *long_name; /**< Long name for value */
134 const char *rate_format; /**< Suggested format for rate_name */
135 const char *rate_name; /**< Short name for value per second */
136 int isvalue; /**< True if value (vs. counter) */
137 const char *mult_names; /**< Multiplier names (e.g., "KGM") */
138 int mult; /**< Multiplier value (e.g., 1024) */
139 int verbose; /**< Suggest only in verbose output */
144 /* All of these enums *MUST* match with the
145 kernel implementation -- so do *NOT*
146 change them! (The drmlib implementation
147 will just copy the flags instead of
148 translating them.) */
150 DRM_FRAME_BUFFER = 0, /**< WC, no caching, no core dump */
151 DRM_REGISTERS = 1, /**< no caching, no core dump */
152 DRM_SHM = 2, /**< shared, cached */
153 DRM_AGP = 3, /**< AGP/GART */
154 DRM_SCATTER_GATHER = 4, /**< PCI scatter/gather */
155 DRM_CONSISTENT = 5 /**< PCI consistent */
159 DRM_RESTRICTED = 0x0001, /**< Cannot be mapped to client-virtual */
160 DRM_READ_ONLY = 0x0002, /**< Read-only in client-virtual */
161 DRM_LOCKED = 0x0004, /**< Physical pages locked */
162 DRM_KERNEL = 0x0008, /**< Kernel requires access */
163 DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
164 DRM_CONTAINS_LOCK = 0x0020, /**< SHM page that contains lock */
165 DRM_REMOVABLE = 0x0040 /**< Removable mapping */
169 * \warning These values *MUST* match drm.h
172 /** \name Flags for DMA buffer dispatch */
174 DRM_DMA_BLOCK = 0x01, /**<
175 * Block until buffer dispatched.
177 * \note the buffer may not yet have been
178 * processed by the hardware -- getting a
179 * hardware lock with the hardware quiescent
180 * will ensure that the buffer has been
183 DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
184 DRM_DMA_PRIORITY = 0x04, /**< High priority dispatch */
187 /** \name Flags for DMA buffer request */
189 DRM_DMA_WAIT = 0x10, /**< Wait for free buffers */
190 DRM_DMA_SMALLER_OK = 0x20, /**< Smaller-than-requested buffers OK */
191 DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers OK */
196 DRM_PAGE_ALIGN = 0x01,
197 DRM_AGP_BUFFER = 0x02,
198 DRM_SG_BUFFER = 0x04,
199 DRM_FB_BUFFER = 0x08,
200 DRM_PCI_BUFFER_RO = 0x10
204 DRM_LOCK_READY = 0x01, /**< Wait until hardware is ready for DMA */
205 DRM_LOCK_QUIESCENT = 0x02, /**< Wait until hardware quiescent */
206 DRM_LOCK_FLUSH = 0x04, /**< Flush this context's DMA queue first */
207 DRM_LOCK_FLUSH_ALL = 0x08, /**< Flush all DMA queues first */
208 /* These *HALT* flags aren't supported yet
209 -- they will be used to support the
210 full-screen DGA-like mode. */
211 DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
212 DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */
216 DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
218 DRM_CONTEXT_2DONLY = 0x02 /**< This context is for 2D rendering only. */
219 } drm_context_tFlags, *drm_context_tFlagsPtr;
221 typedef struct _drmBufDesc {
222 int count; /**< Number of buffers of this size */
223 int size; /**< Size in bytes */
224 int low_mark; /**< Low water mark */
225 int high_mark; /**< High water mark */
226 } drmBufDesc, *drmBufDescPtr;
228 typedef struct _drmBufInfo {
229 int count; /**< Number of buffers described in list */
230 drmBufDescPtr list; /**< List of buffer descriptions */
231 } drmBufInfo, *drmBufInfoPtr;
233 typedef struct _drmBuf {
234 int idx; /**< Index into the master buffer list */
235 int total; /**< Buffer size */
236 int used; /**< Amount of buffer in use (for DMA) */
237 drmAddress address; /**< Address */
238 } drmBuf, *drmBufPtr;
241 * Buffer mapping information.
243 * Used by drmMapBufs() and drmUnmapBufs() to store information about the
246 typedef struct _drmBufMap {
247 int count; /**< Number of buffers mapped */
248 drmBufPtr list; /**< Buffers */
249 } drmBufMap, *drmBufMapPtr;
251 typedef struct _drmLock {
252 volatile unsigned int lock;
254 /* This is big enough for most current (and future?) architectures:
257 Intel P5/PPro/PII/PIII: 32 bytes
258 Intel StrongARM: 32 bytes
259 Intel i386/i486: 16 bytes
261 Motorola 68k: 16 bytes
262 Motorola PowerPC: 32 bytes
265 } drmLock, *drmLockPtr;
268 * Indices here refer to the offset into
271 typedef struct _drmDMAReq {
272 drm_context_t context; /**< Context handle */
273 int send_count; /**< Number of buffers to send */
274 int *send_list; /**< List of handles to buffers */
275 int *send_sizes; /**< Lengths of data to send, in bytes */
276 drmDMAFlags flags; /**< Flags */
277 int request_count; /**< Number of buffers requested */
278 int request_size; /**< Desired size of buffers requested */
279 int *request_list; /**< Buffer information */
280 int *request_sizes; /**< Minimum acceptable sizes */
281 int granted_count; /**< Number of buffers granted at this size */
282 } drmDMAReq, *drmDMAReqPtr;
284 typedef struct _drmRegion {
289 } drmRegion, *drmRegionPtr;
291 typedef struct _drmTextureRegion {
294 unsigned char in_use;
295 unsigned char padding; /**< Explicitly pad this out */
297 } drmTextureRegion, *drmTextureRegionPtr;
301 DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
302 DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */
303 /* bits 1-6 are reserved for high crtcs */
304 DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
305 DRM_VBLANK_EVENT = 0x4000000, /**< Send event instead of blocking */
306 DRM_VBLANK_FLIP = 0x8000000, /**< Scheduled buffer swap should flip */
307 DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
308 DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
309 DRM_VBLANK_SIGNAL = 0x40000000 /* Send signal instead of blocking */
311 #define DRM_VBLANK_HIGH_CRTC_SHIFT 1
313 typedef struct _drmVBlankReq {
314 drmVBlankSeqType type;
315 unsigned int sequence;
316 unsigned long signal;
317 } drmVBlankReq, *drmVBlankReqPtr;
319 typedef struct _drmVBlankReply {
320 drmVBlankSeqType type;
321 unsigned int sequence;
324 } drmVBlankReply, *drmVBlankReplyPtr;
326 typedef union _drmVBlank {
327 drmVBlankReq request;
328 drmVBlankReply reply;
329 } drmVBlank, *drmVBlankPtr;
331 typedef struct _drmSetVersion {
336 } drmSetVersion, *drmSetVersionPtr;
338 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
340 #define DRM_LOCK_HELD 0x80000000U /**< Hardware lock is held */
341 #define DRM_LOCK_CONT 0x40000000U /**< Hardware lock is contended */
343 #if defined(__GNUC__) && (__GNUC__ >= 2)
344 # if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
345 /* Reflect changes here to drmP.h */
346 #define DRM_CAS(lock,old,new,__ret) \
348 int __dummy; /* Can't mark eax as clobbered */ \
349 __asm__ __volatile__( \
350 "lock ; cmpxchg %4,%1\n\t" \
353 "=m" (__drm_dummy_lock(lock)), \
359 #elif defined(__alpha__)
361 #define DRM_CAS(lock, old, new, ret) \
364 __asm__ __volatile__( \
365 " addl $31, %5, %3\n" \
366 "1: ldl_l %0, %2\n" \
367 " cmpeq %0, %3, %1\n" \
373 "2: cmpeq %1, 0, %1\n" \
377 : "=&r"(tmp), "=&r"(ret), \
378 "=m"(__drm_dummy_lock(lock)), \
380 : "r"(new), "r"(old) \
384 #elif defined(__sparc__)
386 #define DRM_CAS(lock,old,new,__ret) \
387 do { register unsigned int __old __asm("o0"); \
388 register unsigned int __new __asm("o1"); \
389 register volatile unsigned int *__lock __asm("o2"); \
392 __lock = (volatile unsigned int *)lock; \
393 __asm__ __volatile__( \
394 /*"cas [%2], %3, %0"*/ \
395 ".word 0xd3e29008\n\t" \
396 /*"membar #StoreStore | #StoreLoad"*/ \
403 __ret = (__new != __old); \
406 #elif defined(__ia64__)
408 #ifdef __INTEL_COMPILER
409 /* this currently generates bad code (missing stop bits)... */
410 #include <ia64intrin.h>
412 #define DRM_CAS(lock,old,new,__ret) \
414 unsigned long __result, __old = (old) & 0xffffffff; \
416 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
417 __ret = (__result) != (__old); \
418 /* __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
424 #define DRM_CAS(lock,old,new,__ret) \
426 unsigned int __result, __old = (old); \
427 __asm__ __volatile__( \
431 "cmpxchg4.acq %0=%1,%3,ar.ccv" \
432 : "=r" (__result), "=m" (__drm_dummy_lock(lock)) \
433 : "r" ((unsigned long)__old), "r" (new) \
435 __ret = (__result) != (__old); \
440 #elif defined(__powerpc__)
442 #define DRM_CAS(lock,old,new,__ret) \
444 __asm__ __volatile__( \
446 "0: lwarx %0,0,%1;" \
454 : "r"(lock), "r"(new), "r"(old) \
455 : "cr0", "memory"); \
458 #endif /* architecture */
459 #endif /* __GNUC__ >= 2 */
462 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
465 #if defined(__alpha__)
466 #define DRM_CAS_RESULT(_result) long _result
467 #elif defined(__powerpc__)
468 #define DRM_CAS_RESULT(_result) int _result
470 #define DRM_CAS_RESULT(_result) char _result
473 #define DRM_LIGHT_LOCK(fd,lock,context) \
475 DRM_CAS_RESULT(__ret); \
476 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
477 if (__ret) drmGetLock(fd,context,0); \
480 /* This one counts fast locks -- for
481 benchmarking only. */
482 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \
484 DRM_CAS_RESULT(__ret); \
485 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
486 if (__ret) drmGetLock(fd,context,0); \
490 #define DRM_LOCK(fd,lock,context,flags) \
492 if (flags) drmGetLock(fd,context,flags); \
493 else DRM_LIGHT_LOCK(fd,lock,context); \
496 #define DRM_UNLOCK(fd,lock,context) \
498 DRM_CAS_RESULT(__ret); \
499 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \
500 if (__ret) drmUnlock(fd,context); \
503 /* Simple spin locks */
504 #define DRM_SPINLOCK(spin,val) \
506 DRM_CAS_RESULT(__ret); \
508 DRM_CAS(spin,0,val,__ret); \
509 if (__ret) while ((spin)->lock); \
513 #define DRM_SPINLOCK_TAKE(spin,val) \
515 DRM_CAS_RESULT(__ret); \
518 cur = (*spin).lock; \
519 DRM_CAS(spin,cur,val,__ret); \
523 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \
527 for (__i = 0; __ret && __i < count; __i++) { \
528 DRM_CAS(spin,0,val,__ret); \
529 if (__ret) for (;__i < count && (spin)->lock; __i++); \
533 #define DRM_SPINUNLOCK(spin,val) \
535 DRM_CAS_RESULT(__ret); \
536 if ((*spin).lock == val) { /* else server stole lock */ \
538 DRM_CAS(spin,val,0,__ret); \
545 /* General user-level programmer's API: unprivileged */
546 extern int drmAvailable(void);
547 extern int drmOpen(const char *name, const char *busid);
548 extern int drmOpenControl(int minor);
549 extern int drmClose(int fd);
550 extern drmVersionPtr drmGetVersion(int fd);
551 extern drmVersionPtr drmGetLibVersion(int fd);
552 extern int drmGetCap(int fd, uint64_t capability, uint64_t *value);
553 extern void drmFreeVersion(drmVersionPtr);
554 extern int drmGetMagic(int fd, drm_magic_t * magic);
555 extern char *drmGetBusid(int fd);
556 extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum,
558 extern int drmGetMap(int fd, int idx, drm_handle_t *offset,
559 drmSize *size, drmMapType *type,
560 drmMapFlags *flags, drm_handle_t *handle,
562 extern int drmGetClient(int fd, int idx, int *auth, int *pid,
563 int *uid, unsigned long *magic,
564 unsigned long *iocs);
565 extern int drmGetStats(int fd, drmStatsT *stats);
566 extern int drmSetInterfaceVersion(int fd, drmSetVersion *version);
567 extern int drmCommandNone(int fd, unsigned long drmCommandIndex);
568 extern int drmCommandRead(int fd, unsigned long drmCommandIndex,
569 void *data, unsigned long size);
570 extern int drmCommandWrite(int fd, unsigned long drmCommandIndex,
571 void *data, unsigned long size);
572 extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
573 void *data, unsigned long size);
575 /* General user-level programmer's API: X server (root) only */
576 extern void drmFreeBusid(const char *busid);
577 extern int drmSetBusid(int fd, const char *busid);
578 extern int drmAuthMagic(int fd, drm_magic_t magic);
579 extern int drmAddMap(int fd,
584 drm_handle_t * handle);
585 extern int drmRmMap(int fd, drm_handle_t handle);
586 extern int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
587 drm_handle_t handle);
589 extern int drmAddBufs(int fd, int count, int size,
590 drmBufDescFlags flags,
592 extern int drmMarkBufs(int fd, double low, double high);
593 extern int drmCreateContext(int fd, drm_context_t * handle);
594 extern int drmSetContextFlags(int fd, drm_context_t context,
595 drm_context_tFlags flags);
596 extern int drmGetContextFlags(int fd, drm_context_t context,
597 drm_context_tFlagsPtr flags);
598 extern int drmAddContextTag(int fd, drm_context_t context, void *tag);
599 extern int drmDelContextTag(int fd, drm_context_t context);
600 extern void *drmGetContextTag(int fd, drm_context_t context);
601 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
602 extern void drmFreeReservedContextList(drm_context_t *);
603 extern int drmSwitchToContext(int fd, drm_context_t context);
604 extern int drmDestroyContext(int fd, drm_context_t handle);
605 extern int drmCreateDrawable(int fd, drm_drawable_t * handle);
606 extern int drmDestroyDrawable(int fd, drm_drawable_t handle);
607 extern int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
608 drm_drawable_info_type_t type,
609 unsigned int num, void *data);
610 extern int drmCtlInstHandler(int fd, int irq);
611 extern int drmCtlUninstHandler(int fd);
613 /* General user-level programmer's API: authenticated client and/or X */
614 extern int drmMap(int fd,
617 drmAddressPtr address);
618 extern int drmUnmap(drmAddress address, drmSize size);
619 extern drmBufInfoPtr drmGetBufInfo(int fd);
620 extern drmBufMapPtr drmMapBufs(int fd);
621 extern int drmUnmapBufs(drmBufMapPtr bufs);
622 extern int drmDMA(int fd, drmDMAReqPtr request);
623 extern int drmFreeBufs(int fd, int count, int *list);
624 extern int drmGetLock(int fd,
625 drm_context_t context,
627 extern int drmUnlock(int fd, drm_context_t context);
628 extern int drmFinish(int fd, int context, drmLockFlags flags);
629 extern int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
630 drm_handle_t * handle);
632 /* AGP/GART support: X server (root) only */
633 extern int drmAgpAcquire(int fd);
634 extern int drmAgpRelease(int fd);
635 extern int drmAgpEnable(int fd, unsigned long mode);
636 extern int drmAgpAlloc(int fd, unsigned long size,
637 unsigned long type, unsigned long *address,
638 drm_handle_t *handle);
639 extern int drmAgpFree(int fd, drm_handle_t handle);
640 extern int drmAgpBind(int fd, drm_handle_t handle,
641 unsigned long offset);
642 extern int drmAgpUnbind(int fd, drm_handle_t handle);
644 /* AGP/GART info: authenticated client and/or X */
645 extern int drmAgpVersionMajor(int fd);
646 extern int drmAgpVersionMinor(int fd);
647 extern unsigned long drmAgpGetMode(int fd);
648 extern unsigned long drmAgpBase(int fd); /* Physical location */
649 extern unsigned long drmAgpSize(int fd); /* Bytes */
650 extern unsigned long drmAgpMemoryUsed(int fd);
651 extern unsigned long drmAgpMemoryAvail(int fd);
652 extern unsigned int drmAgpVendorId(int fd);
653 extern unsigned int drmAgpDeviceId(int fd);
655 /* PCI scatter/gather support: X server (root) only */
656 extern int drmScatterGatherAlloc(int fd, unsigned long size,
657 drm_handle_t *handle);
658 extern int drmScatterGatherFree(int fd, drm_handle_t handle);
660 extern int drmWaitVBlank(int fd, drmVBlankPtr vbl);
662 /* Support routines */
663 extern void drmSetServerInfo(drmServerInfoPtr info);
664 extern int drmError(int err, const char *label);
665 extern void *drmMalloc(int size);
666 extern void drmFree(void *pt);
668 /* Hash table routines */
669 extern void *drmHashCreate(void);
670 extern int drmHashDestroy(void *t);
671 extern int drmHashLookup(void *t, unsigned long key, void **value);
672 extern int drmHashInsert(void *t, unsigned long key, void *value);
673 extern int drmHashDelete(void *t, unsigned long key);
674 extern int drmHashFirst(void *t, unsigned long *key, void **value);
675 extern int drmHashNext(void *t, unsigned long *key, void **value);
678 extern void *drmRandomCreate(unsigned long seed);
679 extern int drmRandomDestroy(void *state);
680 extern unsigned long drmRandom(void *state);
681 extern double drmRandomDouble(void *state);
683 /* Skip list routines */
685 extern void *drmSLCreate(void);
686 extern int drmSLDestroy(void *l);
687 extern int drmSLLookup(void *l, unsigned long key, void **value);
688 extern int drmSLInsert(void *l, unsigned long key, void *value);
689 extern int drmSLDelete(void *l, unsigned long key);
690 extern int drmSLNext(void *l, unsigned long *key, void **value);
691 extern int drmSLFirst(void *l, unsigned long *key, void **value);
692 extern void drmSLDump(void *l);
693 extern int drmSLLookupNeighbors(void *l, unsigned long key,
694 unsigned long *prev_key, void **prev_value,
695 unsigned long *next_key, void **next_value);
697 extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
698 extern void drmCloseOnce(int fd);
699 extern void drmMsg(const char *format, ...);
701 extern int drmSetMaster(int fd);
702 extern int drmDropMaster(int fd);
704 #define DRM_EVENT_CONTEXT_VERSION 2
706 typedef struct _drmEventContext {
708 /* This struct is versioned so we can add more pointers if we
709 * add more events. */
712 void (*vblank_handler)(int fd,
713 unsigned int sequence,
715 unsigned int tv_usec,
718 void (*page_flip_handler)(int fd,
719 unsigned int sequence,
721 unsigned int tv_usec,
724 } drmEventContext, *drmEventContextPtr;
726 extern int drmHandleEvent(int fd, drmEventContextPtr evctx);
728 extern char *drmGetDeviceNameFromFd(int fd);
730 extern int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd);
731 extern int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle);
733 #if defined(__cplusplus) || defined(c_plusplus)