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 */
96 #define DRM_PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
98 #define DRM_PRINTFLIKE(f, a)
101 typedef struct _drmServerInfo {
102 int (*debug_print)(const char *format, va_list ap) DRM_PRINTFLIKE(1,0);
103 int (*load_module)(const char *name);
104 void (*get_perms)(gid_t *, mode_t *);
105 } drmServerInfo, *drmServerInfoPtr;
107 typedef struct drmHashEntry {
109 void (*f)(int, void *, void *);
113 extern int drmIoctl(int fd, unsigned long request, void *arg);
114 extern void *drmGetHashTable(void);
115 extern drmHashEntry *drmGetEntry(int fd);
118 * Driver version information.
120 * \sa drmGetVersion() and drmSetVersion().
122 typedef struct _drmVersion {
123 int version_major; /**< Major version */
124 int version_minor; /**< Minor version */
125 int version_patchlevel; /**< Patch level */
126 int name_len; /**< Length of name buffer */
127 char *name; /**< Name of driver */
128 int date_len; /**< Length of date buffer */
129 char *date; /**< User-space buffer to hold date */
130 int desc_len; /**< Length of desc buffer */
131 char *desc; /**< User-space buffer to hold desc */
132 } drmVersion, *drmVersionPtr;
134 typedef struct _drmStats {
135 unsigned long count; /**< Number of data */
137 unsigned long value; /**< Value from kernel */
138 const char *long_format; /**< Suggested format for long_name */
139 const char *long_name; /**< Long name for value */
140 const char *rate_format; /**< Suggested format for rate_name */
141 const char *rate_name; /**< Short name for value per second */
142 int isvalue; /**< True if value (vs. counter) */
143 const char *mult_names; /**< Multiplier names (e.g., "KGM") */
144 int mult; /**< Multiplier value (e.g., 1024) */
145 int verbose; /**< Suggest only in verbose output */
150 /* All of these enums *MUST* match with the
151 kernel implementation -- so do *NOT*
152 change them! (The drmlib implementation
153 will just copy the flags instead of
154 translating them.) */
156 DRM_FRAME_BUFFER = 0, /**< WC, no caching, no core dump */
157 DRM_REGISTERS = 1, /**< no caching, no core dump */
158 DRM_SHM = 2, /**< shared, cached */
159 DRM_AGP = 3, /**< AGP/GART */
160 DRM_SCATTER_GATHER = 4, /**< PCI scatter/gather */
161 DRM_CONSISTENT = 5 /**< PCI consistent */
165 DRM_RESTRICTED = 0x0001, /**< Cannot be mapped to client-virtual */
166 DRM_READ_ONLY = 0x0002, /**< Read-only in client-virtual */
167 DRM_LOCKED = 0x0004, /**< Physical pages locked */
168 DRM_KERNEL = 0x0008, /**< Kernel requires access */
169 DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
170 DRM_CONTAINS_LOCK = 0x0020, /**< SHM page that contains lock */
171 DRM_REMOVABLE = 0x0040 /**< Removable mapping */
175 * \warning These values *MUST* match drm.h
178 /** \name Flags for DMA buffer dispatch */
180 DRM_DMA_BLOCK = 0x01, /**<
181 * Block until buffer dispatched.
183 * \note the buffer may not yet have been
184 * processed by the hardware -- getting a
185 * hardware lock with the hardware quiescent
186 * will ensure that the buffer has been
189 DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
190 DRM_DMA_PRIORITY = 0x04, /**< High priority dispatch */
193 /** \name Flags for DMA buffer request */
195 DRM_DMA_WAIT = 0x10, /**< Wait for free buffers */
196 DRM_DMA_SMALLER_OK = 0x20, /**< Smaller-than-requested buffers OK */
197 DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers OK */
202 DRM_PAGE_ALIGN = 0x01,
203 DRM_AGP_BUFFER = 0x02,
204 DRM_SG_BUFFER = 0x04,
205 DRM_FB_BUFFER = 0x08,
206 DRM_PCI_BUFFER_RO = 0x10
210 DRM_LOCK_READY = 0x01, /**< Wait until hardware is ready for DMA */
211 DRM_LOCK_QUIESCENT = 0x02, /**< Wait until hardware quiescent */
212 DRM_LOCK_FLUSH = 0x04, /**< Flush this context's DMA queue first */
213 DRM_LOCK_FLUSH_ALL = 0x08, /**< Flush all DMA queues first */
214 /* These *HALT* flags aren't supported yet
215 -- they will be used to support the
216 full-screen DGA-like mode. */
217 DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
218 DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */
222 DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
224 DRM_CONTEXT_2DONLY = 0x02 /**< This context is for 2D rendering only. */
225 } drm_context_tFlags, *drm_context_tFlagsPtr;
227 typedef struct _drmBufDesc {
228 int count; /**< Number of buffers of this size */
229 int size; /**< Size in bytes */
230 int low_mark; /**< Low water mark */
231 int high_mark; /**< High water mark */
232 } drmBufDesc, *drmBufDescPtr;
234 typedef struct _drmBufInfo {
235 int count; /**< Number of buffers described in list */
236 drmBufDescPtr list; /**< List of buffer descriptions */
237 } drmBufInfo, *drmBufInfoPtr;
239 typedef struct _drmBuf {
240 int idx; /**< Index into the master buffer list */
241 int total; /**< Buffer size */
242 int used; /**< Amount of buffer in use (for DMA) */
243 drmAddress address; /**< Address */
244 } drmBuf, *drmBufPtr;
247 * Buffer mapping information.
249 * Used by drmMapBufs() and drmUnmapBufs() to store information about the
252 typedef struct _drmBufMap {
253 int count; /**< Number of buffers mapped */
254 drmBufPtr list; /**< Buffers */
255 } drmBufMap, *drmBufMapPtr;
257 typedef struct _drmLock {
258 volatile unsigned int lock;
260 /* This is big enough for most current (and future?) architectures:
263 Intel P5/PPro/PII/PIII: 32 bytes
264 Intel StrongARM: 32 bytes
265 Intel i386/i486: 16 bytes
267 Motorola 68k: 16 bytes
268 Motorola PowerPC: 32 bytes
271 } drmLock, *drmLockPtr;
274 * Indices here refer to the offset into
277 typedef struct _drmDMAReq {
278 drm_context_t context; /**< Context handle */
279 int send_count; /**< Number of buffers to send */
280 int *send_list; /**< List of handles to buffers */
281 int *send_sizes; /**< Lengths of data to send, in bytes */
282 drmDMAFlags flags; /**< Flags */
283 int request_count; /**< Number of buffers requested */
284 int request_size; /**< Desired size of buffers requested */
285 int *request_list; /**< Buffer information */
286 int *request_sizes; /**< Minimum acceptable sizes */
287 int granted_count; /**< Number of buffers granted at this size */
288 } drmDMAReq, *drmDMAReqPtr;
290 typedef struct _drmRegion {
295 } drmRegion, *drmRegionPtr;
297 typedef struct _drmTextureRegion {
300 unsigned char in_use;
301 unsigned char padding; /**< Explicitly pad this out */
303 } drmTextureRegion, *drmTextureRegionPtr;
307 DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
308 DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */
309 /* bits 1-6 are reserved for high crtcs */
310 DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
311 DRM_VBLANK_EVENT = 0x4000000, /**< Send event instead of blocking */
312 DRM_VBLANK_FLIP = 0x8000000, /**< Scheduled buffer swap should flip */
313 DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
314 DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
315 DRM_VBLANK_SIGNAL = 0x40000000 /* Send signal instead of blocking */
317 #define DRM_VBLANK_HIGH_CRTC_SHIFT 1
319 typedef struct _drmVBlankReq {
320 drmVBlankSeqType type;
321 unsigned int sequence;
322 unsigned long signal;
323 } drmVBlankReq, *drmVBlankReqPtr;
325 typedef struct _drmVBlankReply {
326 drmVBlankSeqType type;
327 unsigned int sequence;
330 } drmVBlankReply, *drmVBlankReplyPtr;
332 typedef union _drmVBlank {
333 drmVBlankReq request;
334 drmVBlankReply reply;
335 } drmVBlank, *drmVBlankPtr;
337 typedef struct _drmSetVersion {
342 } drmSetVersion, *drmSetVersionPtr;
344 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
346 #define DRM_LOCK_HELD 0x80000000U /**< Hardware lock is held */
347 #define DRM_LOCK_CONT 0x40000000U /**< Hardware lock is contended */
349 #if defined(__GNUC__) && (__GNUC__ >= 2)
350 # if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
351 /* Reflect changes here to drmP.h */
352 #define DRM_CAS(lock,old,new,__ret) \
354 int __dummy; /* Can't mark eax as clobbered */ \
355 __asm__ __volatile__( \
356 "lock ; cmpxchg %4,%1\n\t" \
359 "=m" (__drm_dummy_lock(lock)), \
365 #elif defined(__alpha__)
367 #define DRM_CAS(lock, old, new, ret) \
370 __asm__ __volatile__( \
371 " addl $31, %5, %3\n" \
372 "1: ldl_l %0, %2\n" \
373 " cmpeq %0, %3, %1\n" \
379 "2: cmpeq %1, 0, %1\n" \
383 : "=&r"(tmp), "=&r"(ret), \
384 "=m"(__drm_dummy_lock(lock)), \
386 : "r"(new), "r"(old) \
390 #elif defined(__sparc__)
392 #define DRM_CAS(lock,old,new,__ret) \
393 do { register unsigned int __old __asm("o0"); \
394 register unsigned int __new __asm("o1"); \
395 register volatile unsigned int *__lock __asm("o2"); \
398 __lock = (volatile unsigned int *)lock; \
399 __asm__ __volatile__( \
400 /*"cas [%2], %3, %0"*/ \
401 ".word 0xd3e29008\n\t" \
402 /*"membar #StoreStore | #StoreLoad"*/ \
409 __ret = (__new != __old); \
412 #elif defined(__ia64__)
414 #ifdef __INTEL_COMPILER
415 /* this currently generates bad code (missing stop bits)... */
416 #include <ia64intrin.h>
418 #define DRM_CAS(lock,old,new,__ret) \
420 unsigned long __result, __old = (old) & 0xffffffff; \
422 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
423 __ret = (__result) != (__old); \
424 /* __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
430 #define DRM_CAS(lock,old,new,__ret) \
432 unsigned int __result, __old = (old); \
433 __asm__ __volatile__( \
437 "cmpxchg4.acq %0=%1,%3,ar.ccv" \
438 : "=r" (__result), "=m" (__drm_dummy_lock(lock)) \
439 : "r" ((unsigned long)__old), "r" (new) \
441 __ret = (__result) != (__old); \
446 #elif defined(__powerpc__)
448 #define DRM_CAS(lock,old,new,__ret) \
450 __asm__ __volatile__( \
452 "0: lwarx %0,0,%1;" \
460 : "r"(lock), "r"(new), "r"(old) \
461 : "cr0", "memory"); \
464 #endif /* architecture */
465 #endif /* __GNUC__ >= 2 */
468 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
471 #if defined(__alpha__)
472 #define DRM_CAS_RESULT(_result) long _result
473 #elif defined(__powerpc__)
474 #define DRM_CAS_RESULT(_result) int _result
476 #define DRM_CAS_RESULT(_result) char _result
479 #define DRM_LIGHT_LOCK(fd,lock,context) \
481 DRM_CAS_RESULT(__ret); \
482 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
483 if (__ret) drmGetLock(fd,context,0); \
486 /* This one counts fast locks -- for
487 benchmarking only. */
488 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \
490 DRM_CAS_RESULT(__ret); \
491 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
492 if (__ret) drmGetLock(fd,context,0); \
496 #define DRM_LOCK(fd,lock,context,flags) \
498 if (flags) drmGetLock(fd,context,flags); \
499 else DRM_LIGHT_LOCK(fd,lock,context); \
502 #define DRM_UNLOCK(fd,lock,context) \
504 DRM_CAS_RESULT(__ret); \
505 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \
506 if (__ret) drmUnlock(fd,context); \
509 /* Simple spin locks */
510 #define DRM_SPINLOCK(spin,val) \
512 DRM_CAS_RESULT(__ret); \
514 DRM_CAS(spin,0,val,__ret); \
515 if (__ret) while ((spin)->lock); \
519 #define DRM_SPINLOCK_TAKE(spin,val) \
521 DRM_CAS_RESULT(__ret); \
524 cur = (*spin).lock; \
525 DRM_CAS(spin,cur,val,__ret); \
529 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \
533 for (__i = 0; __ret && __i < count; __i++) { \
534 DRM_CAS(spin,0,val,__ret); \
535 if (__ret) for (;__i < count && (spin)->lock; __i++); \
539 #define DRM_SPINUNLOCK(spin,val) \
541 DRM_CAS_RESULT(__ret); \
542 if ((*spin).lock == val) { /* else server stole lock */ \
544 DRM_CAS(spin,val,0,__ret); \
551 /* General user-level programmer's API: unprivileged */
552 extern int drmAvailable(void);
553 extern int drmOpen(const char *name, const char *busid);
554 extern int drmOpenControl(int minor);
555 extern int drmClose(int fd);
556 extern drmVersionPtr drmGetVersion(int fd);
557 extern drmVersionPtr drmGetLibVersion(int fd);
558 extern int drmGetCap(int fd, uint64_t capability, uint64_t *value);
559 extern void drmFreeVersion(drmVersionPtr);
560 extern int drmGetMagic(int fd, drm_magic_t * magic);
561 extern char *drmGetBusid(int fd);
562 extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum,
564 extern int drmGetMap(int fd, int idx, drm_handle_t *offset,
565 drmSize *size, drmMapType *type,
566 drmMapFlags *flags, drm_handle_t *handle,
568 extern int drmGetClient(int fd, int idx, int *auth, int *pid,
569 int *uid, unsigned long *magic,
570 unsigned long *iocs);
571 extern int drmGetStats(int fd, drmStatsT *stats);
572 extern int drmSetInterfaceVersion(int fd, drmSetVersion *version);
573 extern int drmCommandNone(int fd, unsigned long drmCommandIndex);
574 extern int drmCommandRead(int fd, unsigned long drmCommandIndex,
575 void *data, unsigned long size);
576 extern int drmCommandWrite(int fd, unsigned long drmCommandIndex,
577 void *data, unsigned long size);
578 extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
579 void *data, unsigned long size);
581 /* General user-level programmer's API: X server (root) only */
582 extern void drmFreeBusid(const char *busid);
583 extern int drmSetBusid(int fd, const char *busid);
584 extern int drmAuthMagic(int fd, drm_magic_t magic);
585 extern int drmAddMap(int fd,
590 drm_handle_t * handle);
591 extern int drmRmMap(int fd, drm_handle_t handle);
592 extern int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
593 drm_handle_t handle);
595 extern int drmAddBufs(int fd, int count, int size,
596 drmBufDescFlags flags,
598 extern int drmMarkBufs(int fd, double low, double high);
599 extern int drmCreateContext(int fd, drm_context_t * handle);
600 extern int drmSetContextFlags(int fd, drm_context_t context,
601 drm_context_tFlags flags);
602 extern int drmGetContextFlags(int fd, drm_context_t context,
603 drm_context_tFlagsPtr flags);
604 extern int drmAddContextTag(int fd, drm_context_t context, void *tag);
605 extern int drmDelContextTag(int fd, drm_context_t context);
606 extern void *drmGetContextTag(int fd, drm_context_t context);
607 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
608 extern void drmFreeReservedContextList(drm_context_t *);
609 extern int drmSwitchToContext(int fd, drm_context_t context);
610 extern int drmDestroyContext(int fd, drm_context_t handle);
611 extern int drmCreateDrawable(int fd, drm_drawable_t * handle);
612 extern int drmDestroyDrawable(int fd, drm_drawable_t handle);
613 extern int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
614 drm_drawable_info_type_t type,
615 unsigned int num, void *data);
616 extern int drmCtlInstHandler(int fd, int irq);
617 extern int drmCtlUninstHandler(int fd);
618 extern int drmSetClientCap(int fd, uint64_t capability,
621 /* General user-level programmer's API: authenticated client and/or X */
622 extern int drmMap(int fd,
625 drmAddressPtr address);
626 extern int drmUnmap(drmAddress address, drmSize size);
627 extern drmBufInfoPtr drmGetBufInfo(int fd);
628 extern drmBufMapPtr drmMapBufs(int fd);
629 extern int drmUnmapBufs(drmBufMapPtr bufs);
630 extern int drmDMA(int fd, drmDMAReqPtr request);
631 extern int drmFreeBufs(int fd, int count, int *list);
632 extern int drmGetLock(int fd,
633 drm_context_t context,
635 extern int drmUnlock(int fd, drm_context_t context);
636 extern int drmFinish(int fd, int context, drmLockFlags flags);
637 extern int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
638 drm_handle_t * handle);
640 /* AGP/GART support: X server (root) only */
641 extern int drmAgpAcquire(int fd);
642 extern int drmAgpRelease(int fd);
643 extern int drmAgpEnable(int fd, unsigned long mode);
644 extern int drmAgpAlloc(int fd, unsigned long size,
645 unsigned long type, unsigned long *address,
646 drm_handle_t *handle);
647 extern int drmAgpFree(int fd, drm_handle_t handle);
648 extern int drmAgpBind(int fd, drm_handle_t handle,
649 unsigned long offset);
650 extern int drmAgpUnbind(int fd, drm_handle_t handle);
652 /* AGP/GART info: authenticated client and/or X */
653 extern int drmAgpVersionMajor(int fd);
654 extern int drmAgpVersionMinor(int fd);
655 extern unsigned long drmAgpGetMode(int fd);
656 extern unsigned long drmAgpBase(int fd); /* Physical location */
657 extern unsigned long drmAgpSize(int fd); /* Bytes */
658 extern unsigned long drmAgpMemoryUsed(int fd);
659 extern unsigned long drmAgpMemoryAvail(int fd);
660 extern unsigned int drmAgpVendorId(int fd);
661 extern unsigned int drmAgpDeviceId(int fd);
663 /* PCI scatter/gather support: X server (root) only */
664 extern int drmScatterGatherAlloc(int fd, unsigned long size,
665 drm_handle_t *handle);
666 extern int drmScatterGatherFree(int fd, drm_handle_t handle);
668 extern int drmWaitVBlank(int fd, drmVBlankPtr vbl);
670 /* Support routines */
671 extern void drmSetServerInfo(drmServerInfoPtr info);
672 extern int drmError(int err, const char *label);
673 extern void *drmMalloc(int size);
674 extern void drmFree(void *pt);
676 /* Hash table routines */
677 extern void *drmHashCreate(void);
678 extern int drmHashDestroy(void *t);
679 extern int drmHashLookup(void *t, unsigned long key, void **value);
680 extern int drmHashInsert(void *t, unsigned long key, void *value);
681 extern int drmHashDelete(void *t, unsigned long key);
682 extern int drmHashFirst(void *t, unsigned long *key, void **value);
683 extern int drmHashNext(void *t, unsigned long *key, void **value);
686 extern void *drmRandomCreate(unsigned long seed);
687 extern int drmRandomDestroy(void *state);
688 extern unsigned long drmRandom(void *state);
689 extern double drmRandomDouble(void *state);
691 /* Skip list routines */
693 extern void *drmSLCreate(void);
694 extern int drmSLDestroy(void *l);
695 extern int drmSLLookup(void *l, unsigned long key, void **value);
696 extern int drmSLInsert(void *l, unsigned long key, void *value);
697 extern int drmSLDelete(void *l, unsigned long key);
698 extern int drmSLNext(void *l, unsigned long *key, void **value);
699 extern int drmSLFirst(void *l, unsigned long *key, void **value);
700 extern void drmSLDump(void *l);
701 extern int drmSLLookupNeighbors(void *l, unsigned long key,
702 unsigned long *prev_key, void **prev_value,
703 unsigned long *next_key, void **next_value);
705 extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
706 extern void drmCloseOnce(int fd);
707 extern void drmMsg(const char *format, ...) DRM_PRINTFLIKE(1, 2);
709 extern int drmSetMaster(int fd);
710 extern int drmDropMaster(int fd);
712 #define DRM_EVENT_CONTEXT_VERSION 2
714 typedef struct _drmEventContext {
716 /* This struct is versioned so we can add more pointers if we
717 * add more events. */
720 void (*vblank_handler)(int fd,
721 unsigned int sequence,
723 unsigned int tv_usec,
726 void (*page_flip_handler)(int fd,
727 unsigned int sequence,
729 unsigned int tv_usec,
732 } drmEventContext, *drmEventContextPtr;
734 extern int drmHandleEvent(int fd, drmEventContextPtr evctx);
736 extern char *drmGetDeviceNameFromFd(int fd);
738 extern int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd);
739 extern int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle);
741 #if defined(__cplusplus) || defined(c_plusplus)