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+/**
+ * \file xf86drm.h
+ * OS-independent header for DRM user-level library interface.
+ *
+ * \author Rickard E. (Rik) Faith <faith@valinux.com>
+ */
+
+/*
+ * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _XF86DRM_H_
+#define _XF86DRM_H_
+
+#include <stdarg.h>
+#include <sys/types.h>
+#include <stdint.h>
+#include <drm.h>
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+#ifndef DRM_MAX_MINOR
+#define DRM_MAX_MINOR 64 /* deprecated */
+#endif
+
+#if defined(__linux__)
+
+#define DRM_IOCTL_NR(n) _IOC_NR(n)
+#define DRM_IOC_VOID _IOC_NONE
+#define DRM_IOC_READ _IOC_READ
+#define DRM_IOC_WRITE _IOC_WRITE
+#define DRM_IOC_READWRITE _IOC_READ|_IOC_WRITE
+#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
+
+#else /* One of the *BSDs */
+
+#include <sys/ioccom.h>
+#define DRM_IOCTL_NR(n) ((n) & 0xff)
+#define DRM_IOC_VOID IOC_VOID
+#define DRM_IOC_READ IOC_OUT
+#define DRM_IOC_WRITE IOC_IN
+#define DRM_IOC_READWRITE IOC_INOUT
+#define DRM_IOC(dir, group, nr, size) _IOC(dir, group, nr, size)
+
+#endif
+
+ /* Defaults, if nothing set in xf86config */
+#define DRM_DEV_UID 0
+#define DRM_DEV_GID 0
+/* Default /dev/dri directory permissions 0755 */
+#define DRM_DEV_DIRMODE \
+ (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
+#define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP)
+
+#ifdef __OpenBSD__
+#define DRM_DIR_NAME "/dev"
+#define DRM_PRIMARY_MINOR_NAME "drm"
+#define DRM_CONTROL_MINOR_NAME "drmC" /* deprecated */
+#define DRM_RENDER_MINOR_NAME "drmR"
+#else
+#define DRM_DIR_NAME "/dev/dri"
+#define DRM_PRIMARY_MINOR_NAME "card"
+#define DRM_CONTROL_MINOR_NAME "controlD" /* deprecated */
+#define DRM_RENDER_MINOR_NAME "renderD"
+#define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */
+#endif
+
+#define DRM_DEV_NAME "%s/" DRM_PRIMARY_MINOR_NAME "%d"
+#define DRM_CONTROL_DEV_NAME "%s/" DRM_CONTROL_MINOR_NAME "%d" /* deprecated */
+#define DRM_RENDER_DEV_NAME "%s/" DRM_RENDER_MINOR_NAME "%d"
+
+#define DRM_NODE_NAME_MAX \
+ (sizeof(DRM_DIR_NAME) + 1 /* slash */ \
+ + MAX3(sizeof(DRM_PRIMARY_MINOR_NAME), \
+ sizeof(DRM_CONTROL_MINOR_NAME), \
+ sizeof(DRM_RENDER_MINOR_NAME)) \
+ + sizeof("1048575") /* highest possible node number 2^MINORBITS - 1 */ \
+ + 1) /* NULL-terminator */
+
+#define DRM_ERR_NO_DEVICE (-1001)
+#define DRM_ERR_NO_ACCESS (-1002)
+#define DRM_ERR_NOT_ROOT (-1003)
+#define DRM_ERR_INVALID (-1004)
+#define DRM_ERR_NO_FD (-1005)
+
+#define DRM_AGP_NO_HANDLE 0
+
+typedef unsigned int drmSize, *drmSizePtr; /**< For mapped regions */
+typedef void *drmAddress, **drmAddressPtr; /**< For mapped regions */
+
+#if (__GNUC__ >= 3)
+#define DRM_PRINTFLIKE(f, a) __attribute__ ((format(__printf__, f, a)))
+#else
+#define DRM_PRINTFLIKE(f, a)
+#endif
+
+typedef struct _drmServerInfo {
+ int (*debug_print)(const char *format, va_list ap) DRM_PRINTFLIKE(1,0);
+ int (*load_module)(const char *name);
+ void (*get_perms)(gid_t *, mode_t *);
+} drmServerInfo, *drmServerInfoPtr;
+
+typedef struct drmHashEntry {
+ int fd;
+ void (*f)(int, void *, void *);
+ void *tagTable;
+} drmHashEntry;
+
+extern int drmIoctl(int fd, unsigned long request, void *arg);
+extern void *drmGetHashTable(void);
+extern drmHashEntry *drmGetEntry(int fd);
+
+/**
+ * Driver version information.
+ *
+ * \sa drmGetVersion() and drmSetVersion().
+ */
+typedef struct _drmVersion {
+ int version_major; /**< Major version */
+ int version_minor; /**< Minor version */
+ int version_patchlevel; /**< Patch level */
+ int name_len; /**< Length of name buffer */
+ char *name; /**< Name of driver */
+ int date_len; /**< Length of date buffer */
+ char *date; /**< User-space buffer to hold date */
+ int desc_len; /**< Length of desc buffer */
+ char *desc; /**< User-space buffer to hold desc */
+} drmVersion, *drmVersionPtr;
+
+typedef struct _drmStats {
+ unsigned long count; /**< Number of data */
+ struct {
+ unsigned long value; /**< Value from kernel */
+ const char *long_format; /**< Suggested format for long_name */
+ const char *long_name; /**< Long name for value */
+ const char *rate_format; /**< Suggested format for rate_name */
+ const char *rate_name; /**< Short name for value per second */
+ int isvalue; /**< True if value (vs. counter) */
+ const char *mult_names; /**< Multiplier names (e.g., "KGM") */
+ int mult; /**< Multiplier value (e.g., 1024) */
+ int verbose; /**< Suggest only in verbose output */
+ } data[15];
+} drmStatsT;
+
+
+ /* All of these enums *MUST* match with the
+ kernel implementation -- so do *NOT*
+ change them! (The drmlib implementation
+ will just copy the flags instead of
+ translating them.) */
+typedef enum {
+ DRM_FRAME_BUFFER = 0, /**< WC, no caching, no core dump */
+ DRM_REGISTERS = 1, /**< no caching, no core dump */
+ DRM_SHM = 2, /**< shared, cached */
+ DRM_AGP = 3, /**< AGP/GART */
+ DRM_SCATTER_GATHER = 4, /**< PCI scatter/gather */
+ DRM_CONSISTENT = 5 /**< PCI consistent */
+} drmMapType;
+
+typedef enum {
+ DRM_RESTRICTED = 0x0001, /**< Cannot be mapped to client-virtual */
+ DRM_READ_ONLY = 0x0002, /**< Read-only in client-virtual */
+ DRM_LOCKED = 0x0004, /**< Physical pages locked */
+ DRM_KERNEL = 0x0008, /**< Kernel requires access */
+ DRM_WRITE_COMBINING = 0x0010, /**< Use write-combining, if available */
+ DRM_CONTAINS_LOCK = 0x0020, /**< SHM page that contains lock */
+ DRM_REMOVABLE = 0x0040 /**< Removable mapping */
+} drmMapFlags;
+
+/**
+ * \warning These values *MUST* match drm.h
+ */
+typedef enum {
+ /** \name Flags for DMA buffer dispatch */
+ /*@{*/
+ DRM_DMA_BLOCK = 0x01, /**<
+ * Block until buffer dispatched.
+ *
+ * \note the buffer may not yet have been
+ * processed by the hardware -- getting a
+ * hardware lock with the hardware quiescent
+ * will ensure that the buffer has been
+ * processed.
+ */
+ DRM_DMA_WHILE_LOCKED = 0x02, /**< Dispatch while lock held */
+ DRM_DMA_PRIORITY = 0x04, /**< High priority dispatch */
+ /*@}*/
+
+ /** \name Flags for DMA buffer request */
+ /*@{*/
+ DRM_DMA_WAIT = 0x10, /**< Wait for free buffers */
+ DRM_DMA_SMALLER_OK = 0x20, /**< Smaller-than-requested buffers OK */
+ DRM_DMA_LARGER_OK = 0x40 /**< Larger-than-requested buffers OK */
+ /*@}*/
+} drmDMAFlags;
+
+typedef enum {
+ DRM_PAGE_ALIGN = 0x01,
+ DRM_AGP_BUFFER = 0x02,
+ DRM_SG_BUFFER = 0x04,
+ DRM_FB_BUFFER = 0x08,
+ DRM_PCI_BUFFER_RO = 0x10
+} drmBufDescFlags;
+
+typedef enum {
+ DRM_LOCK_READY = 0x01, /**< Wait until hardware is ready for DMA */
+ DRM_LOCK_QUIESCENT = 0x02, /**< Wait until hardware quiescent */
+ DRM_LOCK_FLUSH = 0x04, /**< Flush this context's DMA queue first */
+ DRM_LOCK_FLUSH_ALL = 0x08, /**< Flush all DMA queues first */
+ /* These *HALT* flags aren't supported yet
+ -- they will be used to support the
+ full-screen DGA-like mode. */
+ DRM_HALT_ALL_QUEUES = 0x10, /**< Halt all current and future queues */
+ DRM_HALT_CUR_QUEUES = 0x20 /**< Halt all current queues */
+} drmLockFlags;
+
+typedef enum {
+ DRM_CONTEXT_PRESERVED = 0x01, /**< This context is preserved and
+ never swapped. */
+ DRM_CONTEXT_2DONLY = 0x02 /**< This context is for 2D rendering only. */
+} drm_context_tFlags, *drm_context_tFlagsPtr;
+
+typedef struct _drmBufDesc {
+ int count; /**< Number of buffers of this size */
+ int size; /**< Size in bytes */
+ int low_mark; /**< Low water mark */
+ int high_mark; /**< High water mark */
+} drmBufDesc, *drmBufDescPtr;
+
+typedef struct _drmBufInfo {
+ int count; /**< Number of buffers described in list */
+ drmBufDescPtr list; /**< List of buffer descriptions */
+} drmBufInfo, *drmBufInfoPtr;
+
+typedef struct _drmBuf {
+ int idx; /**< Index into the master buffer list */
+ int total; /**< Buffer size */
+ int used; /**< Amount of buffer in use (for DMA) */
+ drmAddress address; /**< Address */
+} drmBuf, *drmBufPtr;
+
+/**
+ * Buffer mapping information.
+ *
+ * Used by drmMapBufs() and drmUnmapBufs() to store information about the
+ * mapped buffers.
+ */
+typedef struct _drmBufMap {
+ int count; /**< Number of buffers mapped */
+ drmBufPtr list; /**< Buffers */
+} drmBufMap, *drmBufMapPtr;
+
+typedef struct _drmLock {
+ volatile unsigned int lock;
+ char padding[60];
+ /* This is big enough for most current (and future?) architectures:
+ DEC Alpha: 32 bytes
+ Intel Merced: ?
+ Intel P5/PPro/PII/PIII: 32 bytes
+ Intel StrongARM: 32 bytes
+ Intel i386/i486: 16 bytes
+ MIPS: 32 bytes (?)
+ Motorola 68k: 16 bytes
+ Motorola PowerPC: 32 bytes
+ Sun SPARC: 32 bytes
+ */
+} drmLock, *drmLockPtr;
+
+/**
+ * Indices here refer to the offset into
+ * list in drmBufInfo
+ */
+typedef struct _drmDMAReq {
+ drm_context_t context; /**< Context handle */
+ int send_count; /**< Number of buffers to send */
+ int *send_list; /**< List of handles to buffers */
+ int *send_sizes; /**< Lengths of data to send, in bytes */
+ drmDMAFlags flags; /**< Flags */
+ int request_count; /**< Number of buffers requested */
+ int request_size; /**< Desired size of buffers requested */
+ int *request_list; /**< Buffer information */
+ int *request_sizes; /**< Minimum acceptable sizes */
+ int granted_count; /**< Number of buffers granted at this size */
+} drmDMAReq, *drmDMAReqPtr;
+
+typedef struct _drmRegion {
+ drm_handle_t handle;
+ unsigned int offset;
+ drmSize size;
+ drmAddress map;
+} drmRegion, *drmRegionPtr;
+
+typedef struct _drmTextureRegion {
+ unsigned char next;
+ unsigned char prev;
+ unsigned char in_use;
+ unsigned char padding; /**< Explicitly pad this out */
+ unsigned int age;
+} drmTextureRegion, *drmTextureRegionPtr;
+
+
+typedef enum {
+ DRM_VBLANK_ABSOLUTE = 0x0, /**< Wait for specific vblank sequence number */
+ DRM_VBLANK_RELATIVE = 0x1, /**< Wait for given number of vblanks */
+ /* bits 1-6 are reserved for high crtcs */
+ DRM_VBLANK_HIGH_CRTC_MASK = 0x0000003e,
+ DRM_VBLANK_EVENT = 0x4000000, /**< Send event instead of blocking */
+ DRM_VBLANK_FLIP = 0x8000000, /**< Scheduled buffer swap should flip */
+ DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */
+ DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */
+ DRM_VBLANK_SIGNAL = 0x40000000 /* Send signal instead of blocking */
+} drmVBlankSeqType;
+#define DRM_VBLANK_HIGH_CRTC_SHIFT 1
+
+typedef struct _drmVBlankReq {
+ drmVBlankSeqType type;
+ unsigned int sequence;
+ unsigned long signal;
+} drmVBlankReq, *drmVBlankReqPtr;
+
+typedef struct _drmVBlankReply {
+ drmVBlankSeqType type;
+ unsigned int sequence;
+ long tval_sec;
+ long tval_usec;
+} drmVBlankReply, *drmVBlankReplyPtr;
+
+typedef union _drmVBlank {
+ drmVBlankReq request;
+ drmVBlankReply reply;
+} drmVBlank, *drmVBlankPtr;
+
+typedef struct _drmSetVersion {
+ int drm_di_major;
+ int drm_di_minor;
+ int drm_dd_major;
+ int drm_dd_minor;
+} drmSetVersion, *drmSetVersionPtr;
+
+#define __drm_dummy_lock(lock) (*(__volatile__ unsigned int *)lock)
+
+#define DRM_LOCK_HELD 0x80000000U /**< Hardware lock is held */
+#define DRM_LOCK_CONT 0x40000000U /**< Hardware lock is contended */
+
+#if defined(__GNUC__) && (__GNUC__ >= 2)
+# if defined(__i386) || defined(__AMD64__) || defined(__x86_64__) || defined(__amd64__)
+ /* Reflect changes here to drmP.h */
+#define DRM_CAS(lock,old,new,__ret) \
+ do { \
+ int __dummy; /* Can't mark eax as clobbered */ \
+ __asm__ __volatile__( \
+ "lock ; cmpxchg %4,%1\n\t" \
+ "setnz %0" \
+ : "=d" (__ret), \
+ "=m" (__drm_dummy_lock(lock)), \
+ "=a" (__dummy) \
+ : "2" (old), \
+ "r" (new)); \
+ } while (0)
+
+#elif defined(__alpha__)
+
+#define DRM_CAS(lock, old, new, ret) \
+ do { \
+ int tmp, old32; \
+ __asm__ __volatile__( \
+ " addl $31, %5, %3\n" \
+ "1: ldl_l %0, %2\n" \
+ " cmpeq %0, %3, %1\n" \
+ " beq %1, 2f\n" \
+ " mov %4, %0\n" \
+ " stl_c %0, %2\n" \
+ " beq %0, 3f\n" \
+ " mb\n" \
+ "2: cmpeq %1, 0, %1\n" \
+ ".subsection 2\n" \
+ "3: br 1b\n" \
+ ".previous" \
+ : "=&r"(tmp), "=&r"(ret), \
+ "=m"(__drm_dummy_lock(lock)), \
+ "=&r"(old32) \
+ : "r"(new), "r"(old) \
+ : "memory"); \
+ } while (0)
+
+#elif defined(__sparc__)
+
+#define DRM_CAS(lock,old,new,__ret) \
+do { register unsigned int __old __asm("o0"); \
+ register unsigned int __new __asm("o1"); \
+ register volatile unsigned int *__lock __asm("o2"); \
+ __old = old; \
+ __new = new; \
+ __lock = (volatile unsigned int *)lock; \
+ __asm__ __volatile__( \
+ /*"cas [%2], %3, %0"*/ \
+ ".word 0xd3e29008\n\t" \
+ /*"membar #StoreStore | #StoreLoad"*/ \
+ ".word 0x8143e00a" \
+ : "=&r" (__new) \
+ : "0" (__new), \
+ "r" (__lock), \
+ "r" (__old) \
+ : "memory"); \
+ __ret = (__new != __old); \
+} while(0)
+
+#elif defined(__ia64__)
+
+#ifdef __INTEL_COMPILER
+/* this currently generates bad code (missing stop bits)... */
+#include <ia64intrin.h>
+
+#define DRM_CAS(lock,old,new,__ret) \
+ do { \
+ unsigned long __result, __old = (old) & 0xffffffff; \
+ __mf(); \
+ __result = _InterlockedCompareExchange_acq(&__drm_dummy_lock(lock), (new), __old);\
+ __ret = (__result) != (__old); \
+/* __ret = (__sync_val_compare_and_swap(&__drm_dummy_lock(lock), \
+ (old), (new)) \
+ != (old)); */\
+ } while (0)
+
+#else
+#define DRM_CAS(lock,old,new,__ret) \
+ do { \
+ unsigned int __result, __old = (old); \
+ __asm__ __volatile__( \
+ "mf\n" \
+ "mov ar.ccv=%2\n" \
+ ";;\n" \
+ "cmpxchg4.acq %0=%1,%3,ar.ccv" \
+ : "=r" (__result), "=m" (__drm_dummy_lock(lock)) \
+ : "r" ((unsigned long)__old), "r" (new) \
+ : "memory"); \
+ __ret = (__result) != (__old); \
+ } while (0)
+
+#endif
+
+#elif defined(__powerpc__)
+
+#define DRM_CAS(lock,old,new,__ret) \
+ do { \
+ __asm__ __volatile__( \
+ "sync;" \
+ "0: lwarx %0,0,%1;" \
+ " xor. %0,%3,%0;" \
+ " bne 1f;" \
+ " stwcx. %2,0,%1;" \
+ " bne- 0b;" \
+ "1: " \
+ "sync;" \
+ : "=&r"(__ret) \
+ : "r"(lock), "r"(new), "r"(old) \
+ : "cr0", "memory"); \
+ } while (0)
+
+# elif defined (__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) \
+ || defined (__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) \
+ || defined (__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__) \
+ || defined (__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) \
+ || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) \
+ || defined(__ARM_ARCH_7EM__)
+ /* excluding ARMv4/ARMv5 and lower (lacking ldrex/strex support) */
+ #undef DRM_DEV_MODE
+ #define DRM_DEV_MODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+
+ #define DRM_CAS(lock,old,new,__ret) \
+ do { \
+ __asm__ __volatile__ ( \
+ "1: ldrex %0, [%1]\n" \
+ " teq %0, %2\n" \
+ " ite eq\n" \
+ " strexeq %0, %3, [%1]\n" \
+ " movne %0, #1\n" \
+ : "=&r" (__ret) \
+ : "r" (lock), "r" (old), "r" (new) \
+ : "cc","memory"); \
+ } while (0)
+
+#endif /* architecture */
+#endif /* __GNUC__ >= 2 */
+
+#ifndef DRM_CAS
+#define DRM_CAS(lock,old,new,ret) do { ret=1; } while (0) /* FAST LOCK FAILS */
+#endif
+
+#if defined(__alpha__)
+#define DRM_CAS_RESULT(_result) long _result
+#elif defined(__powerpc__)
+#define DRM_CAS_RESULT(_result) int _result
+#else
+#define DRM_CAS_RESULT(_result) char _result
+#endif
+
+#define DRM_LIGHT_LOCK(fd,lock,context) \
+ do { \
+ DRM_CAS_RESULT(__ret); \
+ DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
+ if (__ret) drmGetLock(fd,context,0); \
+ } while(0)
+
+ /* This one counts fast locks -- for
+ benchmarking only. */
+#define DRM_LIGHT_LOCK_COUNT(fd,lock,context,count) \
+ do { \
+ DRM_CAS_RESULT(__ret); \
+ DRM_CAS(lock,context,DRM_LOCK_HELD|context,__ret); \
+ if (__ret) drmGetLock(fd,context,0); \
+ else ++count; \
+ } while(0)
+
+#define DRM_LOCK(fd,lock,context,flags) \
+ do { \
+ if (flags) drmGetLock(fd,context,flags); \
+ else DRM_LIGHT_LOCK(fd,lock,context); \
+ } while(0)
+
+#define DRM_UNLOCK(fd,lock,context) \
+ do { \
+ DRM_CAS_RESULT(__ret); \
+ DRM_CAS(lock,DRM_LOCK_HELD|context,context,__ret); \
+ if (__ret) drmUnlock(fd,context); \
+ } while(0)
+
+ /* Simple spin locks */
+#define DRM_SPINLOCK(spin,val) \
+ do { \
+ DRM_CAS_RESULT(__ret); \
+ do { \
+ DRM_CAS(spin,0,val,__ret); \
+ if (__ret) while ((spin)->lock); \
+ } while (__ret); \
+ } while(0)
+
+#define DRM_SPINLOCK_TAKE(spin,val) \
+ do { \
+ DRM_CAS_RESULT(__ret); \
+ int cur; \
+ do { \
+ cur = (*spin).lock; \
+ DRM_CAS(spin,cur,val,__ret); \
+ } while (__ret); \
+ } while(0)
+
+#define DRM_SPINLOCK_COUNT(spin,val,count,__ret) \
+ do { \
+ int __i; \
+ __ret = 1; \
+ for (__i = 0; __ret && __i < count; __i++) { \
+ DRM_CAS(spin,0,val,__ret); \
+ if (__ret) for (;__i < count && (spin)->lock; __i++); \
+ } \
+ } while(0)
+
+#define DRM_SPINUNLOCK(spin,val) \
+ do { \
+ DRM_CAS_RESULT(__ret); \
+ if ((*spin).lock == val) { /* else server stole lock */ \
+ do { \
+ DRM_CAS(spin,val,0,__ret); \
+ } while (__ret); \
+ } \
+ } while(0)
+
+
+
+/* General user-level programmer's API: unprivileged */
+extern int drmAvailable(void);
+extern int drmOpen(const char *name, const char *busid);
+
+#define DRM_NODE_PRIMARY 0
+#define DRM_NODE_CONTROL 1 /* deprecated: never returned */
+#define DRM_NODE_RENDER 2
+#define DRM_NODE_MAX 3
+
+extern int drmOpenWithType(const char *name, const char *busid,
+ int type);
+
+extern int drmOpenControl(int minor); /* deprecated: always fails */
+extern int drmOpenRender(int minor);
+extern int drmClose(int fd);
+extern drmVersionPtr drmGetVersion(int fd);
+extern drmVersionPtr drmGetLibVersion(int fd);
+extern int drmGetCap(int fd, uint64_t capability, uint64_t *value);
+extern void drmFreeVersion(drmVersionPtr);
+extern int drmGetMagic(int fd, drm_magic_t * magic);
+extern char *drmGetBusid(int fd);
+extern int drmGetInterruptFromBusID(int fd, int busnum, int devnum,
+ int funcnum);
+extern int drmGetMap(int fd, int idx, drm_handle_t *offset,
+ drmSize *size, drmMapType *type,
+ drmMapFlags *flags, drm_handle_t *handle,
+ int *mtrr);
+extern int drmGetClient(int fd, int idx, int *auth, int *pid,
+ int *uid, unsigned long *magic,
+ unsigned long *iocs);
+extern int drmGetStats(int fd, drmStatsT *stats);
+extern int drmSetInterfaceVersion(int fd, drmSetVersion *version);
+extern int drmCommandNone(int fd, unsigned long drmCommandIndex);
+extern int drmCommandRead(int fd, unsigned long drmCommandIndex,
+ void *data, unsigned long size);
+extern int drmCommandWrite(int fd, unsigned long drmCommandIndex,
+ void *data, unsigned long size);
+extern int drmCommandWriteRead(int fd, unsigned long drmCommandIndex,
+ void *data, unsigned long size);
+
+/* General user-level programmer's API: X server (root) only */
+extern void drmFreeBusid(const char *busid);
+extern int drmSetBusid(int fd, const char *busid);
+extern int drmAuthMagic(int fd, drm_magic_t magic);
+extern int drmAddMap(int fd,
+ drm_handle_t offset,
+ drmSize size,
+ drmMapType type,
+ drmMapFlags flags,
+ drm_handle_t * handle);
+extern int drmRmMap(int fd, drm_handle_t handle);
+extern int drmAddContextPrivateMapping(int fd, drm_context_t ctx_id,
+ drm_handle_t handle);
+
+extern int drmAddBufs(int fd, int count, int size,
+ drmBufDescFlags flags,
+ int agp_offset);
+extern int drmMarkBufs(int fd, double low, double high);
+extern int drmCreateContext(int fd, drm_context_t * handle);
+extern int drmSetContextFlags(int fd, drm_context_t context,
+ drm_context_tFlags flags);
+extern int drmGetContextFlags(int fd, drm_context_t context,
+ drm_context_tFlagsPtr flags);
+extern int drmAddContextTag(int fd, drm_context_t context, void *tag);
+extern int drmDelContextTag(int fd, drm_context_t context);
+extern void *drmGetContextTag(int fd, drm_context_t context);
+extern drm_context_t * drmGetReservedContextList(int fd, int *count);
+extern void drmFreeReservedContextList(drm_context_t *);
+extern int drmSwitchToContext(int fd, drm_context_t context);
+extern int drmDestroyContext(int fd, drm_context_t handle);
+extern int drmCreateDrawable(int fd, drm_drawable_t * handle);
+extern int drmDestroyDrawable(int fd, drm_drawable_t handle);
+extern int drmUpdateDrawableInfo(int fd, drm_drawable_t handle,
+ drm_drawable_info_type_t type,
+ unsigned int num, void *data);
+extern int drmCtlInstHandler(int fd, int irq);
+extern int drmCtlUninstHandler(int fd);
+extern int drmSetClientCap(int fd, uint64_t capability,
+ uint64_t value);
+
+extern int drmCrtcGetSequence(int fd, uint32_t crtcId,
+ uint64_t *sequence, uint64_t *ns);
+extern int drmCrtcQueueSequence(int fd, uint32_t crtcId,
+ uint32_t flags, uint64_t sequence,
+ uint64_t *sequence_queued,
+ uint64_t user_data);
+/* General user-level programmer's API: authenticated client and/or X */
+extern int drmMap(int fd,
+ drm_handle_t handle,
+ drmSize size,
+ drmAddressPtr address);
+extern int drmUnmap(drmAddress address, drmSize size);
+extern drmBufInfoPtr drmGetBufInfo(int fd);
+extern drmBufMapPtr drmMapBufs(int fd);
+extern int drmUnmapBufs(drmBufMapPtr bufs);
+extern int drmDMA(int fd, drmDMAReqPtr request);
+extern int drmFreeBufs(int fd, int count, int *list);
+extern int drmGetLock(int fd,
+ drm_context_t context,
+ drmLockFlags flags);
+extern int drmUnlock(int fd, drm_context_t context);
+extern int drmFinish(int fd, int context, drmLockFlags flags);
+extern int drmGetContextPrivateMapping(int fd, drm_context_t ctx_id,
+ drm_handle_t * handle);
+
+/* AGP/GART support: X server (root) only */
+extern int drmAgpAcquire(int fd);
+extern int drmAgpRelease(int fd);
+extern int drmAgpEnable(int fd, unsigned long mode);
+extern int drmAgpAlloc(int fd, unsigned long size,
+ unsigned long type, unsigned long *address,
+ drm_handle_t *handle);
+extern int drmAgpFree(int fd, drm_handle_t handle);
+extern int drmAgpBind(int fd, drm_handle_t handle,
+ unsigned long offset);
+extern int drmAgpUnbind(int fd, drm_handle_t handle);
+
+/* AGP/GART info: authenticated client and/or X */
+extern int drmAgpVersionMajor(int fd);
+extern int drmAgpVersionMinor(int fd);
+extern unsigned long drmAgpGetMode(int fd);
+extern unsigned long drmAgpBase(int fd); /* Physical location */
+extern unsigned long drmAgpSize(int fd); /* Bytes */
+extern unsigned long drmAgpMemoryUsed(int fd);
+extern unsigned long drmAgpMemoryAvail(int fd);
+extern unsigned int drmAgpVendorId(int fd);
+extern unsigned int drmAgpDeviceId(int fd);
+
+/* PCI scatter/gather support: X server (root) only */
+extern int drmScatterGatherAlloc(int fd, unsigned long size,
+ drm_handle_t *handle);
+extern int drmScatterGatherFree(int fd, drm_handle_t handle);
+
+extern int drmWaitVBlank(int fd, drmVBlankPtr vbl);
+
+/* Support routines */
+extern void drmSetServerInfo(drmServerInfoPtr info);
+extern int drmError(int err, const char *label);
+extern void *drmMalloc(int size);
+extern void drmFree(void *pt);
+
+/* Hash table routines */
+extern void *drmHashCreate(void);
+extern int drmHashDestroy(void *t);
+extern int drmHashLookup(void *t, unsigned long key, void **value);
+extern int drmHashInsert(void *t, unsigned long key, void *value);
+extern int drmHashDelete(void *t, unsigned long key);
+extern int drmHashFirst(void *t, unsigned long *key, void **value);
+extern int drmHashNext(void *t, unsigned long *key, void **value);
+
+/* PRNG routines */
+extern void *drmRandomCreate(unsigned long seed);
+extern int drmRandomDestroy(void *state);
+extern unsigned long drmRandom(void *state);
+extern double drmRandomDouble(void *state);
+
+/* Skip list routines */
+
+extern void *drmSLCreate(void);
+extern int drmSLDestroy(void *l);
+extern int drmSLLookup(void *l, unsigned long key, void **value);
+extern int drmSLInsert(void *l, unsigned long key, void *value);
+extern int drmSLDelete(void *l, unsigned long key);
+extern int drmSLNext(void *l, unsigned long *key, void **value);
+extern int drmSLFirst(void *l, unsigned long *key, void **value);
+extern void drmSLDump(void *l);
+extern int drmSLLookupNeighbors(void *l, unsigned long key,
+ unsigned long *prev_key, void **prev_value,
+ unsigned long *next_key, void **next_value);
+
+extern int drmOpenOnce(void *unused, const char *BusID, int *newlyopened);
+extern int drmOpenOnceWithType(const char *BusID, int *newlyopened, int type);
+extern void drmCloseOnce(int fd);
+extern void drmMsg(const char *format, ...) DRM_PRINTFLIKE(1, 2);
+
+extern int drmSetMaster(int fd);
+extern int drmDropMaster(int fd);
+extern int drmIsMaster(int fd);
+
+#define DRM_EVENT_CONTEXT_VERSION 4
+
+typedef struct _drmEventContext {
+
+ /* This struct is versioned so we can add more pointers if we
+ * add more events. */
+ int version;
+
+ void (*vblank_handler)(int fd,
+ unsigned int sequence,
+ unsigned int tv_sec,
+ unsigned int tv_usec,
+ void *user_data);
+
+ void (*page_flip_handler)(int fd,
+ unsigned int sequence,
+ unsigned int tv_sec,
+ unsigned int tv_usec,
+ void *user_data);
+
+ void (*page_flip_handler2)(int fd,
+ unsigned int sequence,
+ unsigned int tv_sec,
+ unsigned int tv_usec,
+ unsigned int crtc_id,
+ void *user_data);
+
+ void (*sequence_handler)(int fd,
+ uint64_t sequence,
+ uint64_t ns,
+ uint64_t user_data);
+} drmEventContext, *drmEventContextPtr;
+
+extern int drmHandleEvent(int fd, drmEventContextPtr evctx);
+
+extern char *drmGetDeviceNameFromFd(int fd);
+
+/* Improved version of drmGetDeviceNameFromFd which attributes for any type of
+ * device/node - card or renderD.
+ */
+extern char *drmGetDeviceNameFromFd2(int fd);
+extern int drmGetNodeTypeFromFd(int fd);
+
+/* Convert between GEM handles and DMA-BUF file descriptors.
+ *
+ * Warning: since GEM handles are not reference-counted and are unique per
+ * DRM file description, the caller is expected to perform its own reference
+ * counting. drmPrimeFDToHandle is guaranteed to return the same handle for
+ * different FDs if they reference the same underlying buffer object. This
+ * could even be a buffer object originally created on the same DRM FD.
+ *
+ * When sharing a DRM FD with an API such as EGL or GBM, the caller must not
+ * use drmPrimeHandleToFD nor drmPrimeFDToHandle. A single user-space
+ * reference-counting implementation is necessary to avoid double-closing GEM
+ * handles.
+ *
+ * Two processes can't share the same DRM FD and both use it to create or
+ * import GEM handles, even when using a single user-space reference-counting
+ * implementation like GBM, because GBM doesn't share its state between
+ * processes.
+ */
+extern int drmPrimeHandleToFD(int fd, uint32_t handle, uint32_t flags, int *prime_fd);
+extern int drmPrimeFDToHandle(int fd, int prime_fd, uint32_t *handle);
+
+extern int drmCloseBufferHandle(int fd, uint32_t handle);
+
+extern char *drmGetPrimaryDeviceNameFromFd(int fd);
+extern char *drmGetRenderDeviceNameFromFd(int fd);
+
+#define DRM_BUS_PCI 0
+#define DRM_BUS_USB 1
+#define DRM_BUS_PLATFORM 2
+#define DRM_BUS_HOST1X 3
+
+typedef struct _drmPciBusInfo {
+ uint16_t domain;
+ uint8_t bus;
+ uint8_t dev;
+ uint8_t func;
+} drmPciBusInfo, *drmPciBusInfoPtr;
+
+typedef struct _drmPciDeviceInfo {
+ uint16_t vendor_id;
+ uint16_t device_id;
+ uint16_t subvendor_id;
+ uint16_t subdevice_id;
+ uint8_t revision_id;
+} drmPciDeviceInfo, *drmPciDeviceInfoPtr;
+
+typedef struct _drmUsbBusInfo {
+ uint8_t bus;
+ uint8_t dev;
+} drmUsbBusInfo, *drmUsbBusInfoPtr;
+
+typedef struct _drmUsbDeviceInfo {
+ uint16_t vendor;
+ uint16_t product;
+} drmUsbDeviceInfo, *drmUsbDeviceInfoPtr;
+
+#define DRM_PLATFORM_DEVICE_NAME_LEN 512
+
+typedef struct _drmPlatformBusInfo {
+ char fullname[DRM_PLATFORM_DEVICE_NAME_LEN];
+} drmPlatformBusInfo, *drmPlatformBusInfoPtr;
+
+typedef struct _drmPlatformDeviceInfo {
+ char **compatible; /* NULL terminated list of compatible strings */
+} drmPlatformDeviceInfo, *drmPlatformDeviceInfoPtr;
+
+#define DRM_HOST1X_DEVICE_NAME_LEN 512
+
+typedef struct _drmHost1xBusInfo {
+ char fullname[DRM_HOST1X_DEVICE_NAME_LEN];
+} drmHost1xBusInfo, *drmHost1xBusInfoPtr;
+
+typedef struct _drmHost1xDeviceInfo {
+ char **compatible; /* NULL terminated list of compatible strings */
+} drmHost1xDeviceInfo, *drmHost1xDeviceInfoPtr;
+
+typedef struct _drmDevice {
+ char **nodes; /* DRM_NODE_MAX sized array */
+ int available_nodes; /* DRM_NODE_* bitmask */
+ int bustype;
+ union {
+ drmPciBusInfoPtr pci;
+ drmUsbBusInfoPtr usb;
+ drmPlatformBusInfoPtr platform;
+ drmHost1xBusInfoPtr host1x;
+ } businfo;
+ union {
+ drmPciDeviceInfoPtr pci;
+ drmUsbDeviceInfoPtr usb;
+ drmPlatformDeviceInfoPtr platform;
+ drmHost1xDeviceInfoPtr host1x;
+ } deviceinfo;
+} drmDevice, *drmDevicePtr;
+
+extern int drmGetDevice(int fd, drmDevicePtr *device);
+extern void drmFreeDevice(drmDevicePtr *device);
+
+extern int drmGetDevices(drmDevicePtr devices[], int max_devices);
+extern void drmFreeDevices(drmDevicePtr devices[], int count);
+
+#define DRM_DEVICE_GET_PCI_REVISION (1 << 0)
+extern int drmGetDevice2(int fd, uint32_t flags, drmDevicePtr *device);
+extern int drmGetDevices2(uint32_t flags, drmDevicePtr devices[], int max_devices);
+
+extern int drmGetDeviceFromDevId(dev_t dev_id, uint32_t flags, drmDevicePtr *device);
+
+/**
+ * Get the node type (DRM_NODE_PRIMARY or DRM_NODE_RENDER) from a device ID.
+ *
+ * Returns negative errno on error.
+ */
+extern int drmGetNodeTypeFromDevId(dev_t devid);
+
+extern int drmDevicesEqual(drmDevicePtr a, drmDevicePtr b);
+
+extern int drmSyncobjCreate(int fd, uint32_t flags, uint32_t *handle);
+extern int drmSyncobjDestroy(int fd, uint32_t handle);
+extern int drmSyncobjHandleToFD(int fd, uint32_t handle, int *obj_fd);
+extern int drmSyncobjFDToHandle(int fd, int obj_fd, uint32_t *handle);
+
+extern int drmSyncobjImportSyncFile(int fd, uint32_t handle, int sync_file_fd);
+extern int drmSyncobjExportSyncFile(int fd, uint32_t handle, int *sync_file_fd);
+extern int drmSyncobjWait(int fd, uint32_t *handles, unsigned num_handles,
+ int64_t timeout_nsec, unsigned flags,
+ uint32_t *first_signaled);
+extern int drmSyncobjReset(int fd, const uint32_t *handles, uint32_t handle_count);
+extern int drmSyncobjSignal(int fd, const uint32_t *handles, uint32_t handle_count);
+extern int drmSyncobjTimelineSignal(int fd, const uint32_t *handles,
+ uint64_t *points, uint32_t handle_count);
+extern int drmSyncobjTimelineWait(int fd, uint32_t *handles, uint64_t *points,
+ unsigned num_handles,
+ int64_t timeout_nsec, unsigned flags,
+ uint32_t *first_signaled);
+extern int drmSyncobjQuery(int fd, uint32_t *handles, uint64_t *points,
+ uint32_t handle_count);
+extern int drmSyncobjQuery2(int fd, uint32_t *handles, uint64_t *points,
+ uint32_t handle_count, uint32_t flags);
+extern int drmSyncobjTransfer(int fd,
+ uint32_t dst_handle, uint64_t dst_point,
+ uint32_t src_handle, uint64_t src_point,
+ uint32_t flags);
+extern int drmSyncobjEventfd(int fd, uint32_t handle, uint64_t point, int ev_fd,
+ uint32_t flags);
+
+extern char *
+drmGetFormatModifierVendor(uint64_t modifier);
+
+extern char *
+drmGetFormatModifierName(uint64_t modifier);
+
+extern char *
+drmGetFormatName(uint32_t format);
+
+#ifndef fourcc_mod_get_vendor
+#define fourcc_mod_get_vendor(modifier) \
+ (((modifier) >> 56) & 0xff)
+#endif
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif