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(__linux__)
44 #define DRM_IOCTL_NR(n) _IOC_NR(n)
45 #define DRM_IOC_VOID _IOC_NONE
46 #define DRM_IOC_READ _IOC_READ
47 #define DRM_IOC_WRITE _IOC_WRITE
48 #define DRM_IOC_READWRITE _IOC_READ|_IOC_WRITE
49 #define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
52 #else /* One of the *BSDs */
54 #include <sys/ioccom.h>
55 #define DRM_IOCTL_NR(n) ((n) & 0xff)
56 #define DRM_IOC_VOID IOC_VOID
57 #define DRM_IOC_READ IOC_OUT
58 #define DRM_IOC_WRITE IOC_IN
59 #define DRM_IOC_READWRITE IOC_INOUT
60 #define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
64 /* Defaults, if nothing set in xf86config */
67 /* Default /dev/dri directory permissions 0755 */
68 #define DRM_DEV_DIRMODE \
69 (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
70 #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
72 #define DRM_DIR_NAME "/dev/dri"
73 #define DRM_DEV_NAME "%s/card%d"
74 #define DRM_CONTROL_DEV_NAME "%s/controlD%d"
75 #define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */
77 #define DRM_ERR_NO_DEVICE (-1001)
78 #define DRM_ERR_NO_ACCESS (-1002)
79 #define DRM_ERR_NOT_ROOT (-1003)
80 #define DRM_ERR_INVALID (-1004)
81 #define DRM_ERR_NO_FD (-1005)
83 #define DRM_AGP_NO_HANDLE 0
85 typedef unsigned int drmSize, *drmSizePtr; /**< For mapped regions */
86 typedef void *drmAddress, **drmAddressPtr; /**< For mapped regions */
88 typedef struct _drmServerInfo {
89 int (*debug_print)(const char *format, va_list ap);
90 int (*load_module)(const char *name);
91 void (*get_perms)(gid_t *, mode_t *);
92 } drmServerInfo, *drmServerInfoPtr;
94 typedef struct drmHashEntry {
96 void (*f)(int, void *, void *);
100 extern int drmIoctl(int fd, unsigned long request, void *arg);
101 extern void *drmGetHashTable(void);
102 extern drmHashEntry *drmGetEntry(int fd);
105 * Driver version information.
107 * \sa drmGetVersion() and drmSetVersion().
109 typedef struct _drmVersion {
110 int version_major; /**< Major version */
111 int version_minor; /**< Minor version */
112 int version_patchlevel; /**< Patch level */
113 int name_len; /**< Length of name buffer */
114 char *name; /**< Name of driver */
115 int date_len; /**< Length of date buffer */
116 char *date; /**< User-space buffer to hold date */
117 int desc_len; /**< Length of desc buffer */
118 char *desc; /**< User-space buffer to hold desc */
119 } drmVersion, *drmVersionPtr;
121 typedef struct _drmStats {
122 unsigned long count; /**< Number of data */
124 unsigned long value; /**< Value from kernel */
125 const char *long_format; /**< Suggested format for long_name */
126 const char *long_name; /**< Long name for value */
127 const char *rate_format; /**< Suggested format for rate_name */
128 const char *rate_name; /**< Short name for value per second */
129 int isvalue; /**< True if value (vs. counter) */
130 const char *mult_names; /**< Multiplier names (e.g., "KGM") */
131 int mult; /**< Multiplier value (e.g., 1024) */
132 int verbose; /**< Suggest only in verbose output */
137 /* All of these enums *MUST* match with the
138 kernel implementation -- so do *NOT*
139 change them! (The drmlib implementation
140 will just copy the flags instead of
141 translating them.) */
143 DRM_FRAME_BUFFER = 0, /**< WC, no caching, no core dump */
144 DRM_REGISTERS = 1, /**< no caching, no core dump */
145 DRM_SHM = 2, /**< shared, cached */
146 DRM_AGP = 3, /**< AGP/GART */
147 DRM_SCATTER_GATHER = 4, /**< PCI scatter/gather */
148 DRM_CONSISTENT = 5 /**< PCI consistent */
152 DRM_RESTRICTED = 0x0001, /**< Cannot be mapped to client-virtual */
153 DRM_READ_ONLY = 0x0002, /**< Read-only in client-virtual */
154 DRM_LOCKED = 0x0004, /**< Physical pages locked */
155 DRM_KERNEL = 0x0008, /**< Kernel requires access */
156 DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
157 DRM_CONTAINS_LOCK = 0x0020, /**< SHM page that contains lock */
158 DRM_REMOVABLE = 0x0040 /**< Removable mapping */
162 * \warning These values *MUST* match drm.h
165 /** \name Flags for DMA buffer dispatch */
167 DRM_DMA_BLOCK = 0x01, /**<
168 * Block until buffer dispatched.
170 * \note the buffer may not yet have been
171 * processed by the hardware -- getting a
172 * hardware lock with the hardware quiescent
173 * will ensure that the buffer has been
176 DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
177 DRM_DMA_PRIORITY = 0x04, /**< High priority dispatch */
180 /** \name Flags for DMA buffer request */
182 DRM_DMA_WAIT = 0x10, /**< Wait for free buffers */
183 DRM_DMA_SMALLER_OK = 0x20, /**< Smaller-than-requested buffers OK */
184 DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers OK */
189 DRM_PAGE_ALIGN = 0x01,
190 DRM_AGP_BUFFER = 0x02,
191 DRM_SG_BUFFER = 0x04,
192 DRM_FB_BUFFER = 0x08,
193 DRM_PCI_BUFFER_RO = 0x10
197 DRM_LOCK_READY = 0x01, /**< Wait until hardware is ready for DMA */
198 DRM_LOCK_QUIESCENT = 0x02, /**< Wait until hardware quiescent */
199 DRM_LOCK_FLUSH = 0x04, /**< Flush this context's DMA queue first */
200 DRM_LOCK_FLUSH_ALL = 0x08, /**< Flush all DMA queues first */
201 /* These *HALT* flags aren't supported yet
202 -- they will be used to support the
203 full-screen DGA-like mode. */
204 DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
205 DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */
209 DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
211 DRM_CONTEXT_2DONLY = 0x02 /**< This context is for 2D rendering only. */
212 } drm_context_tFlags, *drm_context_tFlagsPtr;
214 typedef struct _drmBufDesc {
215 int count; /**< Number of buffers of this size */
216 int size; /**< Size in bytes */
217 int low_mark; /**< Low water mark */
218 int high_mark; /**< High water mark */
219 } drmBufDesc, *drmBufDescPtr;
221 typedef struct _drmBufInfo {
222 int count; /**< Number of buffers described in list */
223 drmBufDescPtr list; /**< List of buffer descriptions */
224 } drmBufInfo, *drmBufInfoPtr;
226 typedef struct _drmBuf {
227 int idx; /**< Index into the master buffer list */
228 int total; /**< Buffer size */
229 int used; /**< Amount of buffer in use (for DMA) */
230 drmAddress address; /**< Address */
231 } drmBuf, *drmBufPtr;
234 * Buffer mapping information.
236 * Used by drmMapBufs() and drmUnmapBufs() to store information about the
239 typedef struct _drmBufMap {
240 int count; /**< Number of buffers mapped */
241 drmBufPtr list; /**< Buffers */
242 } drmBufMap, *drmBufMapPtr;
244 typedef struct _drmLock {
245 volatile unsigned int lock;
247 /* This is big enough for most current (and future?) architectures:
250 Intel P5/PPro/PII/PIII: 32 bytes
251 Intel StrongARM: 32 bytes
252 Intel i386/i486: 16 bytes
254 Motorola 68k: 16 bytes
255 Motorola PowerPC: 32 bytes
258 } drmLock, *drmLockPtr;
261 * Indices here refer to the offset into
264 typedef struct _drmDMAReq {
265 drm_context_t context; /**< Context handle */
266 int send_count; /**< Number of buffers to send */
267 int *send_list; /**< List of handles to buffers */
268 int *send_sizes; /**< Lengths of data to send, in bytes */
269 drmDMAFlags flags; /**< Flags */
270 int request_count; /**< Number of buffers requested */
271 int request_size; /**< Desired size of buffers requested */
272 int *request_list; /**< Buffer information */
273 int *request_sizes; /**< Minimum acceptable sizes */
274 int granted_count; /**< Number of buffers granted at this size */
275 } drmDMAReq, *drmDMAReqPtr;
277 typedef struct _drmRegion {
282 } drmRegion, *drmRegionPtr;
284 typedef struct _drmTextureRegion {
287 unsigned char in_use;
288 unsigned char padding; /**< Explicitly pad this out */
290 } drmTextureRegion, *drmTextureRegionPtr;
294 DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
295 DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */
296 DRM_VBLANK_EVENT = 0x4000000, /**< Send event instead of blocking */
297 DRM_VBLANK_FLIP = 0x8000000, /**< Scheduled buffer swap should flip */
298 DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
299 DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
300 DRM_VBLANK_SIGNAL = 0x40000000 /* Send signal instead of blocking */
303 typedef struct _drmVBlankReq {
304 drmVBlankSeqType type;
305 unsigned int sequence;
306 unsigned long signal;
307 } drmVBlankReq, *drmVBlankReqPtr;
309 typedef struct _drmVBlankReply {
310 drmVBlankSeqType type;
311 unsigned int sequence;
314 } drmVBlankReply, *drmVBlankReplyPtr;
316 typedef union _drmVBlank {
317 drmVBlankReq request;
318 drmVBlankReply reply;
319 } drmVBlank, *drmVBlankPtr;
321 typedef struct _drmSetVersion {
326 } drmSetVersion, *drmSetVersionPtr;
328 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
330 #define DRM_LOCK_HELD 0x80000000U /**< Hardware lock is held */
331 #define DRM_LOCK_CONT 0x40000000U /**< Hardware lock is contended */
333 #if defined(__GNUC__) && (__GNUC__ >= 2)
334 # if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
335 /* Reflect changes here to drmP.h */
336 #define DRM_CAS(lock,old,new,__ret) \
338 int __dummy; /* Can't mark eax as clobbered */ \
339 __asm__ __volatile__( \
340 "lock ; cmpxchg %4,%1\n\t" \
343 "=m" (__drm_dummy_lock(lock)), \
349 #elif defined(__alpha__)
351 #define DRM_CAS(lock, old, new, ret) \
354 __asm__ __volatile__( \
355 " addl $31, %5, %3\n" \
356 "1: ldl_l %0, %2\n" \
357 " cmpeq %0, %3, %1\n" \
363 "2: cmpeq %1, 0, %1\n" \
367 : "=&r"(tmp), "=&r"(ret), \
368 "=m"(__drm_dummy_lock(lock)), \
370 : "r"(new), "r"(old) \
374 #elif defined(__sparc__)
376 #define DRM_CAS(lock,old,new,__ret) \
377 do { register unsigned int __old __asm("o0"); \
378 register unsigned int __new __asm("o1"); \
379 register volatile unsigned int *__lock __asm("o2"); \
382 __lock = (volatile unsigned int *)lock; \
383 __asm__ __volatile__( \
384 /*"cas [%2], %3, %0"*/ \
385 ".word 0xd3e29008\n\t" \
386 /*"membar #StoreStore | #StoreLoad"*/ \
393 __ret = (__new != __old); \
396 #elif defined(__ia64__)
398 #ifdef __INTEL_COMPILER
399 /* this currently generates bad code (missing stop bits)... */
400 #include <ia64intrin.h>
402 #define DRM_CAS(lock,old,new,__ret) \
404 unsigned long __result, __old = (old) & 0xffffffff; \
406 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
407 __ret = (__result) != (__old); \
408 /* __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
414 #define DRM_CAS(lock,old,new,__ret) \
416 unsigned int __result, __old = (old); \
417 __asm__ __volatile__( \
421 "cmpxchg4.acq %0=%1,%3,ar.ccv" \
422 : "=r" (__result), "=m" (__drm_dummy_lock(lock)) \
423 : "r" ((unsigned long)__old), "r" (new) \
425 __ret = (__result) != (__old); \
430 #elif defined(__powerpc__)
432 #define DRM_CAS(lock,old,new,__ret) \
434 __asm__ __volatile__( \
436 "0: lwarx %0,0,%1;" \
444 : "r"(lock), "r"(new), "r"(old) \
445 : "cr0", "memory"); \
448 #endif /* architecture */
449 #endif /* __GNUC__ >= 2 */
452 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
455 #if defined(__alpha__)
456 #define DRM_CAS_RESULT(_result) long _result
457 #elif defined(__powerpc__)
458 #define DRM_CAS_RESULT(_result) int _result
460 #define DRM_CAS_RESULT(_result) char _result
463 #define DRM_LIGHT_LOCK(fd,lock,context) \
465 DRM_CAS_RESULT(__ret); \
466 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
467 if (__ret) drmGetLock(fd,context,0); \
470 /* This one counts fast locks -- for
471 benchmarking only. */
472 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \
474 DRM_CAS_RESULT(__ret); \
475 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
476 if (__ret) drmGetLock(fd,context,0); \
480 #define DRM_LOCK(fd,lock,context,flags) \
482 if (flags) drmGetLock(fd,context,flags); \
483 else DRM_LIGHT_LOCK(fd,lock,context); \
486 #define DRM_UNLOCK(fd,lock,context) \
488 DRM_CAS_RESULT(__ret); \
489 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \
490 if (__ret) drmUnlock(fd,context); \
493 /* Simple spin locks */
494 #define DRM_SPINLOCK(spin,val) \
496 DRM_CAS_RESULT(__ret); \
498 DRM_CAS(spin,0,val,__ret); \
499 if (__ret) while ((spin)->lock); \
503 #define DRM_SPINLOCK_TAKE(spin,val) \
505 DRM_CAS_RESULT(__ret); \
508 cur = (*spin).lock; \
509 DRM_CAS(spin,cur,val,__ret); \
513 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \
517 for (__i = 0; __ret && __i < count; __i++) { \
518 DRM_CAS(spin,0,val,__ret); \
519 if (__ret) for (;__i < count && (spin)->lock; __i++); \
523 #define DRM_SPINUNLOCK(spin,val) \
525 DRM_CAS_RESULT(__ret); \
526 if ((*spin).lock == val) { /* else server stole lock */ \
528 DRM_CAS(spin,val,0,__ret); \
535 /* General user-level programmer's API: unprivileged */
536 extern int drmAvailable(void);
537 extern int drmOpen(const char *name, const char *busid);
538 extern int drmOpenControl(int minor);
539 extern int drmClose(int fd);
540 extern drmVersionPtr drmGetVersion(int fd);
541 extern drmVersionPtr drmGetLibVersion(int fd);
542 extern void drmFreeVersion(drmVersionPtr);
543 extern int drmGetMagic(int fd, drm_magic_t * magic);
544 extern char *drmGetBusid(int fd);
545 extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum,
547 extern int drmGetMap(int fd, int idx, drm_handle_t *offset,
548 drmSize *size, drmMapType *type,
549 drmMapFlags *flags, drm_handle_t *handle,
551 extern int drmGetClient(int fd, int idx, int *auth, int *pid,
552 int *uid, unsigned long *magic,
553 unsigned long *iocs);
554 extern int drmGetStats(int fd, drmStatsT *stats);
555 extern int drmSetInterfaceVersion(int fd, drmSetVersion *version);
556 extern int drmCommandNone(int fd, unsigned long drmCommandIndex);
557 extern int drmCommandRead(int fd, unsigned long drmCommandIndex,
558 void *data, unsigned long size);
559 extern int drmCommandWrite(int fd, unsigned long drmCommandIndex,
560 void *data, unsigned long size);
561 extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
562 void *data, unsigned long size);
564 /* General user-level programmer's API: X server (root) only */
565 extern void drmFreeBusid(const char *busid);
566 extern int drmSetBusid(int fd, const char *busid);
567 extern int drmAuthMagic(int fd, drm_magic_t magic);
568 extern int drmAddMap(int fd,
573 drm_handle_t * handle);
574 extern int drmRmMap(int fd, drm_handle_t handle);
575 extern int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
576 drm_handle_t handle);
578 extern int drmAddBufs(int fd, int count, int size,
579 drmBufDescFlags flags,
581 extern int drmMarkBufs(int fd, double low, double high);
582 extern int drmCreateContext(int fd, drm_context_t * handle);
583 extern int drmSetContextFlags(int fd, drm_context_t context,
584 drm_context_tFlags flags);
585 extern int drmGetContextFlags(int fd, drm_context_t context,
586 drm_context_tFlagsPtr flags);
587 extern int drmAddContextTag(int fd, drm_context_t context, void *tag);
588 extern int drmDelContextTag(int fd, drm_context_t context);
589 extern void *drmGetContextTag(int fd, drm_context_t context);
590 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
591 extern void drmFreeReservedContextList(drm_context_t *);
592 extern int drmSwitchToContext(int fd, drm_context_t context);
593 extern int drmDestroyContext(int fd, drm_context_t handle);
594 extern int drmCreateDrawable(int fd, drm_drawable_t * handle);
595 extern int drmDestroyDrawable(int fd, drm_drawable_t handle);
596 extern int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
597 drm_drawable_info_type_t type,
598 unsigned int num, void *data);
599 extern int drmCtlInstHandler(int fd, int irq);
600 extern int drmCtlUninstHandler(int fd);
602 /* General user-level programmer's API: authenticated client and/or X */
603 extern int drmMap(int fd,
606 drmAddressPtr address);
607 extern int drmUnmap(drmAddress address, drmSize size);
608 extern drmBufInfoPtr drmGetBufInfo(int fd);
609 extern drmBufMapPtr drmMapBufs(int fd);
610 extern int drmUnmapBufs(drmBufMapPtr bufs);
611 extern int drmDMA(int fd, drmDMAReqPtr request);
612 extern int drmFreeBufs(int fd, int count, int *list);
613 extern int drmGetLock(int fd,
614 drm_context_t context,
616 extern int drmUnlock(int fd, drm_context_t context);
617 extern int drmFinish(int fd, int context, drmLockFlags flags);
618 extern int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
619 drm_handle_t * handle);
621 /* AGP/GART support: X server (root) only */
622 extern int drmAgpAcquire(int fd);
623 extern int drmAgpRelease(int fd);
624 extern int drmAgpEnable(int fd, unsigned long mode);
625 extern int drmAgpAlloc(int fd, unsigned long size,
626 unsigned long type, unsigned long *address,
627 drm_handle_t *handle);
628 extern int drmAgpFree(int fd, drm_handle_t handle);
629 extern int drmAgpBind(int fd, drm_handle_t handle,
630 unsigned long offset);
631 extern int drmAgpUnbind(int fd, drm_handle_t handle);
633 /* AGP/GART info: authenticated client and/or X */
634 extern int drmAgpVersionMajor(int fd);
635 extern int drmAgpVersionMinor(int fd);
636 extern unsigned long drmAgpGetMode(int fd);
637 extern unsigned long drmAgpBase(int fd); /* Physical location */
638 extern unsigned long drmAgpSize(int fd); /* Bytes */
639 extern unsigned long drmAgpMemoryUsed(int fd);
640 extern unsigned long drmAgpMemoryAvail(int fd);
641 extern unsigned int drmAgpVendorId(int fd);
642 extern unsigned int drmAgpDeviceId(int fd);
644 /* PCI scatter/gather support: X server (root) only */
645 extern int drmScatterGatherAlloc(int fd, unsigned long size,
646 drm_handle_t *handle);
647 extern int drmScatterGatherFree(int fd, drm_handle_t handle);
649 extern int drmWaitVBlank(int fd, drmVBlankPtr vbl);
651 /* Support routines */
652 extern void drmSetServerInfo(drmServerInfoPtr info);
653 extern int drmError(int err, const char *label);
654 extern void *drmMalloc(int size);
655 extern void drmFree(void *pt);
657 /* Hash table routines */
658 extern void *drmHashCreate(void);
659 extern int drmHashDestroy(void *t);
660 extern int drmHashLookup(void *t, unsigned long key, void **value);
661 extern int drmHashInsert(void *t, unsigned long key, void *value);
662 extern int drmHashDelete(void *t, unsigned long key);
663 extern int drmHashFirst(void *t, unsigned long *key, void **value);
664 extern int drmHashNext(void *t, unsigned long *key, void **value);
667 extern void *drmRandomCreate(unsigned long seed);
668 extern int drmRandomDestroy(void *state);
669 extern unsigned long drmRandom(void *state);
670 extern double drmRandomDouble(void *state);
672 /* Skip list routines */
674 extern void *drmSLCreate(void);
675 extern int drmSLDestroy(void *l);
676 extern int drmSLLookup(void *l, unsigned long key, void **value);
677 extern int drmSLInsert(void *l, unsigned long key, void *value);
678 extern int drmSLDelete(void *l, unsigned long key);
679 extern int drmSLNext(void *l, unsigned long *key, void **value);
680 extern int drmSLFirst(void *l, unsigned long *key, void **value);
681 extern void drmSLDump(void *l);
682 extern int drmSLLookupNeighbors(void *l, unsigned long key,
683 unsigned long *prev_key, void **prev_value,
684 unsigned long *next_key, void **next_value);
686 extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
687 extern void drmCloseOnce(int fd);
688 extern void drmMsg(const char *format, ...);
690 extern int drmSetMaster(int fd);
691 extern int drmDropMaster(int fd);
693 #define DRM_EVENT_CONTEXT_VERSION 1
695 typedef struct _drmEventContext {
697 /* This struct is versioned so we can add more pointers if we
698 * add more events. */
701 void (*vblank_handler)(int fd,
702 unsigned int sequence,
704 unsigned int tv_usec,
707 } drmEventContext, *drmEventContextPtr;
709 extern int drmHandleEvent(int fd, drmEventContextPtr evctx);
711 extern char *drmGetDeviceNameFromFd(int fd);