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_RENDER_DEV_NAME "%s/renderD%d"
83 #define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */
85 #define DRM_ERR_NO_DEVICE (-1001)
86 #define DRM_ERR_NO_ACCESS (-1002)
87 #define DRM_ERR_NOT_ROOT (-1003)
88 #define DRM_ERR_INVALID (-1004)
89 #define DRM_ERR_NO_FD (-1005)
91 #define DRM_AGP_NO_HANDLE 0
93 typedef unsigned int drmSize, *drmSizePtr; /**< For mapped regions */
94 typedef void *drmAddress, **drmAddressPtr; /**< For mapped regions */
97 #define DRM_PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
99 #define DRM_PRINTFLIKE(f, a)
102 typedef struct _drmServerInfo {
103 int (*debug_print)(const char *format, va_list ap) DRM_PRINTFLIKE(1,0);
104 int (*load_module)(const char *name);
105 void (*get_perms)(gid_t *, mode_t *);
106 } drmServerInfo, *drmServerInfoPtr;
108 typedef struct drmHashEntry {
110 void (*f)(int, void *, void *);
114 extern int drmIoctl(int fd, unsigned long request, void *arg);
115 extern void *drmGetHashTable(void);
116 extern drmHashEntry *drmGetEntry(int fd);
119 * Driver version information.
121 * \sa drmGetVersion() and drmSetVersion().
123 typedef struct _drmVersion {
124 int version_major; /**< Major version */
125 int version_minor; /**< Minor version */
126 int version_patchlevel; /**< Patch level */
127 int name_len; /**< Length of name buffer */
128 char *name; /**< Name of driver */
129 int date_len; /**< Length of date buffer */
130 char *date; /**< User-space buffer to hold date */
131 int desc_len; /**< Length of desc buffer */
132 char *desc; /**< User-space buffer to hold desc */
133 } drmVersion, *drmVersionPtr;
135 typedef struct _drmStats {
136 unsigned long count; /**< Number of data */
138 unsigned long value; /**< Value from kernel */
139 const char *long_format; /**< Suggested format for long_name */
140 const char *long_name; /**< Long name for value */
141 const char *rate_format; /**< Suggested format for rate_name */
142 const char *rate_name; /**< Short name for value per second */
143 int isvalue; /**< True if value (vs. counter) */
144 const char *mult_names; /**< Multiplier names (e.g., "KGM") */
145 int mult; /**< Multiplier value (e.g., 1024) */
146 int verbose; /**< Suggest only in verbose output */
151 /* All of these enums *MUST* match with the
152 kernel implementation -- so do *NOT*
153 change them! (The drmlib implementation
154 will just copy the flags instead of
155 translating them.) */
157 DRM_FRAME_BUFFER = 0, /**< WC, no caching, no core dump */
158 DRM_REGISTERS = 1, /**< no caching, no core dump */
159 DRM_SHM = 2, /**< shared, cached */
160 DRM_AGP = 3, /**< AGP/GART */
161 DRM_SCATTER_GATHER = 4, /**< PCI scatter/gather */
162 DRM_CONSISTENT = 5 /**< PCI consistent */
166 DRM_RESTRICTED = 0x0001, /**< Cannot be mapped to client-virtual */
167 DRM_READ_ONLY = 0x0002, /**< Read-only in client-virtual */
168 DRM_LOCKED = 0x0004, /**< Physical pages locked */
169 DRM_KERNEL = 0x0008, /**< Kernel requires access */
170 DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
171 DRM_CONTAINS_LOCK = 0x0020, /**< SHM page that contains lock */
172 DRM_REMOVABLE = 0x0040 /**< Removable mapping */
176 * \warning These values *MUST* match drm.h
179 /** \name Flags for DMA buffer dispatch */
181 DRM_DMA_BLOCK = 0x01, /**<
182 * Block until buffer dispatched.
184 * \note the buffer may not yet have been
185 * processed by the hardware -- getting a
186 * hardware lock with the hardware quiescent
187 * will ensure that the buffer has been
190 DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
191 DRM_DMA_PRIORITY = 0x04, /**< High priority dispatch */
194 /** \name Flags for DMA buffer request */
196 DRM_DMA_WAIT = 0x10, /**< Wait for free buffers */
197 DRM_DMA_SMALLER_OK = 0x20, /**< Smaller-than-requested buffers OK */
198 DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers OK */
203 DRM_PAGE_ALIGN = 0x01,
204 DRM_AGP_BUFFER = 0x02,
205 DRM_SG_BUFFER = 0x04,
206 DRM_FB_BUFFER = 0x08,
207 DRM_PCI_BUFFER_RO = 0x10
211 DRM_LOCK_READY = 0x01, /**< Wait until hardware is ready for DMA */
212 DRM_LOCK_QUIESCENT = 0x02, /**< Wait until hardware quiescent */
213 DRM_LOCK_FLUSH = 0x04, /**< Flush this context's DMA queue first */
214 DRM_LOCK_FLUSH_ALL = 0x08, /**< Flush all DMA queues first */
215 /* These *HALT* flags aren't supported yet
216 -- they will be used to support the
217 full-screen DGA-like mode. */
218 DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
219 DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */
223 DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
225 DRM_CONTEXT_2DONLY = 0x02 /**< This context is for 2D rendering only. */
226 } drm_context_tFlags, *drm_context_tFlagsPtr;
228 typedef struct _drmBufDesc {
229 int count; /**< Number of buffers of this size */
230 int size; /**< Size in bytes */
231 int low_mark; /**< Low water mark */
232 int high_mark; /**< High water mark */
233 } drmBufDesc, *drmBufDescPtr;
235 typedef struct _drmBufInfo {
236 int count; /**< Number of buffers described in list */
237 drmBufDescPtr list; /**< List of buffer descriptions */
238 } drmBufInfo, *drmBufInfoPtr;
240 typedef struct _drmBuf {
241 int idx; /**< Index into the master buffer list */
242 int total; /**< Buffer size */
243 int used; /**< Amount of buffer in use (for DMA) */
244 drmAddress address; /**< Address */
245 } drmBuf, *drmBufPtr;
248 * Buffer mapping information.
250 * Used by drmMapBufs() and drmUnmapBufs() to store information about the
253 typedef struct _drmBufMap {
254 int count; /**< Number of buffers mapped */
255 drmBufPtr list; /**< Buffers */
256 } drmBufMap, *drmBufMapPtr;
258 typedef struct _drmLock {
259 volatile unsigned int lock;
261 /* This is big enough for most current (and future?) architectures:
264 Intel P5/PPro/PII/PIII: 32 bytes
265 Intel StrongARM: 32 bytes
266 Intel i386/i486: 16 bytes
268 Motorola 68k: 16 bytes
269 Motorola PowerPC: 32 bytes
272 } drmLock, *drmLockPtr;
275 * Indices here refer to the offset into
278 typedef struct _drmDMAReq {
279 drm_context_t context; /**< Context handle */
280 int send_count; /**< Number of buffers to send */
281 int *send_list; /**< List of handles to buffers */
282 int *send_sizes; /**< Lengths of data to send, in bytes */
283 drmDMAFlags flags; /**< Flags */
284 int request_count; /**< Number of buffers requested */
285 int request_size; /**< Desired size of buffers requested */
286 int *request_list; /**< Buffer information */
287 int *request_sizes; /**< Minimum acceptable sizes */
288 int granted_count; /**< Number of buffers granted at this size */
289 } drmDMAReq, *drmDMAReqPtr;
291 typedef struct _drmRegion {
296 } drmRegion, *drmRegionPtr;
298 typedef struct _drmTextureRegion {
301 unsigned char in_use;
302 unsigned char padding; /**< Explicitly pad this out */
304 } drmTextureRegion, *drmTextureRegionPtr;
308 DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
309 DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */
310 /* bits 1-6 are reserved for high crtcs */
311 DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
312 DRM_VBLANK_EVENT = 0x4000000, /**< Send event instead of blocking */
313 DRM_VBLANK_FLIP = 0x8000000, /**< Scheduled buffer swap should flip */
314 DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
315 DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
316 DRM_VBLANK_SIGNAL = 0x40000000 /* Send signal instead of blocking */
318 #define DRM_VBLANK_HIGH_CRTC_SHIFT 1
320 typedef struct _drmVBlankReq {
321 drmVBlankSeqType type;
322 unsigned int sequence;
323 unsigned long signal;
324 } drmVBlankReq, *drmVBlankReqPtr;
326 typedef struct _drmVBlankReply {
327 drmVBlankSeqType type;
328 unsigned int sequence;
331 } drmVBlankReply, *drmVBlankReplyPtr;
333 typedef union _drmVBlank {
334 drmVBlankReq request;
335 drmVBlankReply reply;
336 } drmVBlank, *drmVBlankPtr;
338 typedef struct _drmSetVersion {
343 } drmSetVersion, *drmSetVersionPtr;
345 #define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
347 #define DRM_LOCK_HELD 0x80000000U /**< Hardware lock is held */
348 #define DRM_LOCK_CONT 0x40000000U /**< Hardware lock is contended */
350 #if defined(__GNUC__) && (__GNUC__ >= 2)
351 # if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
352 /* Reflect changes here to drmP.h */
353 #define DRM_CAS(lock,old,new,__ret) \
355 int __dummy; /* Can't mark eax as clobbered */ \
356 __asm__ __volatile__( \
357 "lock ; cmpxchg %4,%1\n\t" \
360 "=m" (__drm_dummy_lock(lock)), \
366 #elif defined(__alpha__)
368 #define DRM_CAS(lock, old, new, ret) \
371 __asm__ __volatile__( \
372 " addl $31, %5, %3\n" \
373 "1: ldl_l %0, %2\n" \
374 " cmpeq %0, %3, %1\n" \
380 "2: cmpeq %1, 0, %1\n" \
384 : "=&r"(tmp), "=&r"(ret), \
385 "=m"(__drm_dummy_lock(lock)), \
387 : "r"(new), "r"(old) \
391 #elif defined(__sparc__)
393 #define DRM_CAS(lock,old,new,__ret) \
394 do { register unsigned int __old __asm("o0"); \
395 register unsigned int __new __asm("o1"); \
396 register volatile unsigned int *__lock __asm("o2"); \
399 __lock = (volatile unsigned int *)lock; \
400 __asm__ __volatile__( \
401 /*"cas [%2], %3, %0"*/ \
402 ".word 0xd3e29008\n\t" \
403 /*"membar #StoreStore | #StoreLoad"*/ \
410 __ret = (__new != __old); \
413 #elif defined(__ia64__)
415 #ifdef __INTEL_COMPILER
416 /* this currently generates bad code (missing stop bits)... */
417 #include <ia64intrin.h>
419 #define DRM_CAS(lock,old,new,__ret) \
421 unsigned long __result, __old = (old) & 0xffffffff; \
423 __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
424 __ret = (__result) != (__old); \
425 /* __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
431 #define DRM_CAS(lock,old,new,__ret) \
433 unsigned int __result, __old = (old); \
434 __asm__ __volatile__( \
438 "cmpxchg4.acq %0=%1,%3,ar.ccv" \
439 : "=r" (__result), "=m" (__drm_dummy_lock(lock)) \
440 : "r" ((unsigned long)__old), "r" (new) \
442 __ret = (__result) != (__old); \
447 #elif defined(__powerpc__)
449 #define DRM_CAS(lock,old,new,__ret) \
451 __asm__ __volatile__( \
453 "0: lwarx %0,0,%1;" \
461 : "r"(lock), "r"(new), "r"(old) \
462 : "cr0", "memory"); \
465 #endif /* architecture */
466 #endif /* __GNUC__ >= 2 */
469 #define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
472 #if defined(__alpha__)
473 #define DRM_CAS_RESULT(_result) long _result
474 #elif defined(__powerpc__)
475 #define DRM_CAS_RESULT(_result) int _result
477 #define DRM_CAS_RESULT(_result) char _result
480 #define DRM_LIGHT_LOCK(fd,lock,context) \
482 DRM_CAS_RESULT(__ret); \
483 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
484 if (__ret) drmGetLock(fd,context,0); \
487 /* This one counts fast locks -- for
488 benchmarking only. */
489 #define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \
491 DRM_CAS_RESULT(__ret); \
492 DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
493 if (__ret) drmGetLock(fd,context,0); \
497 #define DRM_LOCK(fd,lock,context,flags) \
499 if (flags) drmGetLock(fd,context,flags); \
500 else DRM_LIGHT_LOCK(fd,lock,context); \
503 #define DRM_UNLOCK(fd,lock,context) \
505 DRM_CAS_RESULT(__ret); \
506 DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \
507 if (__ret) drmUnlock(fd,context); \
510 /* Simple spin locks */
511 #define DRM_SPINLOCK(spin,val) \
513 DRM_CAS_RESULT(__ret); \
515 DRM_CAS(spin,0,val,__ret); \
516 if (__ret) while ((spin)->lock); \
520 #define DRM_SPINLOCK_TAKE(spin,val) \
522 DRM_CAS_RESULT(__ret); \
525 cur = (*spin).lock; \
526 DRM_CAS(spin,cur,val,__ret); \
530 #define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \
534 for (__i = 0; __ret && __i < count; __i++) { \
535 DRM_CAS(spin,0,val,__ret); \
536 if (__ret) for (;__i < count && (spin)->lock; __i++); \
540 #define DRM_SPINUNLOCK(spin,val) \
542 DRM_CAS_RESULT(__ret); \
543 if ((*spin).lock == val) { /* else server stole lock */ \
545 DRM_CAS(spin,val,0,__ret); \
552 /* General user-level programmer's API: unprivileged */
553 extern int drmAvailable(void);
554 extern int drmOpen(const char *name, const char *busid);
556 #define DRM_NODE_PRIMARY 0
557 #define DRM_NODE_CONTROL 1
558 #define DRM_NODE_RENDER 2
559 extern int drmOpenWithType(const char *name, const char *busid,
562 extern int drmOpenControl(int minor);
563 extern int drmOpenRender(int minor);
564 extern int drmClose(int fd);
565 extern drmVersionPtr drmGetVersion(int fd);
566 extern drmVersionPtr drmGetLibVersion(int fd);
567 extern int drmGetCap(int fd, uint64_t capability, uint64_t *value);
568 extern void drmFreeVersion(drmVersionPtr);
569 extern int drmGetMagic(int fd, drm_magic_t * magic);
570 extern char *drmGetBusid(int fd);
571 extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum,
573 extern int drmGetMap(int fd, int idx, drm_handle_t *offset,
574 drmSize *size, drmMapType *type,
575 drmMapFlags *flags, drm_handle_t *handle,
577 extern int drmGetClient(int fd, int idx, int *auth, int *pid,
578 int *uid, unsigned long *magic,
579 unsigned long *iocs);
580 extern int drmGetStats(int fd, drmStatsT *stats);
581 extern int drmSetInterfaceVersion(int fd, drmSetVersion *version);
582 extern int drmCommandNone(int fd, unsigned long drmCommandIndex);
583 extern int drmCommandRead(int fd, unsigned long drmCommandIndex,
584 void *data, unsigned long size);
585 extern int drmCommandWrite(int fd, unsigned long drmCommandIndex,
586 void *data, unsigned long size);
587 extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
588 void *data, unsigned long size);
590 /* General user-level programmer's API: X server (root) only */
591 extern void drmFreeBusid(const char *busid);
592 extern int drmSetBusid(int fd, const char *busid);
593 extern int drmAuthMagic(int fd, drm_magic_t magic);
594 extern int drmAddMap(int fd,
599 drm_handle_t * handle);
600 extern int drmRmMap(int fd, drm_handle_t handle);
601 extern int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
602 drm_handle_t handle);
604 extern int drmAddBufs(int fd, int count, int size,
605 drmBufDescFlags flags,
607 extern int drmMarkBufs(int fd, double low, double high);
608 extern int drmCreateContext(int fd, drm_context_t * handle);
609 extern int drmSetContextFlags(int fd, drm_context_t context,
610 drm_context_tFlags flags);
611 extern int drmGetContextFlags(int fd, drm_context_t context,
612 drm_context_tFlagsPtr flags);
613 extern int drmAddContextTag(int fd, drm_context_t context, void *tag);
614 extern int drmDelContextTag(int fd, drm_context_t context);
615 extern void *drmGetContextTag(int fd, drm_context_t context);
616 extern drm_context_t * drmGetReservedContextList(int fd, int *count);
617 extern void drmFreeReservedContextList(drm_context_t *);
618 extern int drmSwitchToContext(int fd, drm_context_t context);
619 extern int drmDestroyContext(int fd, drm_context_t handle);
620 extern int drmCreateDrawable(int fd, drm_drawable_t * handle);
621 extern int drmDestroyDrawable(int fd, drm_drawable_t handle);
622 extern int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
623 drm_drawable_info_type_t type,
624 unsigned int num, void *data);
625 extern int drmCtlInstHandler(int fd, int irq);
626 extern int drmCtlUninstHandler(int fd);
627 extern int drmSetClientCap(int fd, uint64_t capability,
630 /* General user-level programmer's API: authenticated client and/or X */
631 extern int drmMap(int fd,
634 drmAddressPtr address);
635 extern int drmUnmap(drmAddress address, drmSize size);
636 extern drmBufInfoPtr drmGetBufInfo(int fd);
637 extern drmBufMapPtr drmMapBufs(int fd);
638 extern int drmUnmapBufs(drmBufMapPtr bufs);
639 extern int drmDMA(int fd, drmDMAReqPtr request);
640 extern int drmFreeBufs(int fd, int count, int *list);
641 extern int drmGetLock(int fd,
642 drm_context_t context,
644 extern int drmUnlock(int fd, drm_context_t context);
645 extern int drmFinish(int fd, int context, drmLockFlags flags);
646 extern int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
647 drm_handle_t * handle);
649 /* AGP/GART support: X server (root) only */
650 extern int drmAgpAcquire(int fd);
651 extern int drmAgpRelease(int fd);
652 extern int drmAgpEnable(int fd, unsigned long mode);
653 extern int drmAgpAlloc(int fd, unsigned long size,
654 unsigned long type, unsigned long *address,
655 drm_handle_t *handle);
656 extern int drmAgpFree(int fd, drm_handle_t handle);
657 extern int drmAgpBind(int fd, drm_handle_t handle,
658 unsigned long offset);
659 extern int drmAgpUnbind(int fd, drm_handle_t handle);
661 /* AGP/GART info: authenticated client and/or X */
662 extern int drmAgpVersionMajor(int fd);
663 extern int drmAgpVersionMinor(int fd);
664 extern unsigned long drmAgpGetMode(int fd);
665 extern unsigned long drmAgpBase(int fd); /* Physical location */
666 extern unsigned long drmAgpSize(int fd); /* Bytes */
667 extern unsigned long drmAgpMemoryUsed(int fd);
668 extern unsigned long drmAgpMemoryAvail(int fd);
669 extern unsigned int drmAgpVendorId(int fd);
670 extern unsigned int drmAgpDeviceId(int fd);
672 /* PCI scatter/gather support: X server (root) only */
673 extern int drmScatterGatherAlloc(int fd, unsigned long size,
674 drm_handle_t *handle);
675 extern int drmScatterGatherFree(int fd, drm_handle_t handle);
677 extern int drmWaitVBlank(int fd, drmVBlankPtr vbl);
679 /* Support routines */
680 extern void drmSetServerInfo(drmServerInfoPtr info);
681 extern int drmError(int err, const char *label);
682 extern void *drmMalloc(int size);
683 extern void drmFree(void *pt);
685 /* Hash table routines */
686 extern void *drmHashCreate(void);
687 extern int drmHashDestroy(void *t);
688 extern int drmHashLookup(void *t, unsigned long key, void **value);
689 extern int drmHashInsert(void *t, unsigned long key, void *value);
690 extern int drmHashDelete(void *t, unsigned long key);
691 extern int drmHashFirst(void *t, unsigned long *key, void **value);
692 extern int drmHashNext(void *t, unsigned long *key, void **value);
695 extern void *drmRandomCreate(unsigned long seed);
696 extern int drmRandomDestroy(void *state);
697 extern unsigned long drmRandom(void *state);
698 extern double drmRandomDouble(void *state);
700 /* Skip list routines */
702 extern void *drmSLCreate(void);
703 extern int drmSLDestroy(void *l);
704 extern int drmSLLookup(void *l, unsigned long key, void **value);
705 extern int drmSLInsert(void *l, unsigned long key, void *value);
706 extern int drmSLDelete(void *l, unsigned long key);
707 extern int drmSLNext(void *l, unsigned long *key, void **value);
708 extern int drmSLFirst(void *l, unsigned long *key, void **value);
709 extern void drmSLDump(void *l);
710 extern int drmSLLookupNeighbors(void *l, unsigned long key,
711 unsigned long *prev_key, void **prev_value,
712 unsigned long *next_key, void **next_value);
714 extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
715 extern int drmOpenOnceWithType(const char *BusID, int *newlyopened, int type);
716 extern void drmCloseOnce(int fd);
717 extern void drmMsg(const char *format, ...) DRM_PRINTFLIKE(1, 2);
719 extern int drmSetMaster(int fd);
720 extern int drmDropMaster(int fd);
722 #define DRM_EVENT_CONTEXT_VERSION 2
724 typedef struct _drmEventContext {
726 /* This struct is versioned so we can add more pointers if we
727 * add more events. */
730 void (*vblank_handler)(int fd,
731 unsigned int sequence,
733 unsigned int tv_usec,
736 void (*page_flip_handler)(int fd,
737 unsigned int sequence,
739 unsigned int tv_usec,
742 } drmEventContext, *drmEventContextPtr;
744 extern int drmHandleEvent(int fd, drmEventContextPtr evctx);
746 extern char *drmGetDeviceNameFromFd(int fd);
747 extern int drmGetNodeTypeFromFd(int fd);
749 extern int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd);
750 extern int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle);
752 extern char *drmGetPrimaryDeviceNameFromFd(int fd);
753 extern char *drmGetRenderDeviceNameFromFd(int fd);
755 #if defined(__cplusplus) || defined(c_plusplus)