/**

 * \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   16

#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|S_IROTH|S_IWOTH)

#ifdef __OpenBSD__

#define DRM_DIR_NAME  "/dev"

#define DRM_PRIMARY_MINOR_NAME  "drm"

#define DRM_CONTROL_MINOR_NAME  "drmC"

#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"

#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"

#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("144") /* highest possible node number */ \

     + 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

#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);

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, control or renderD.

 */

extern char *drmGetDeviceNameFromFd2(int fd);

extern int drmGetNodeTypeFromFd(int fd);

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 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;