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2001-11-27Put back i810 major version number (same reasons as for r128)Keith Whitwell
2001-11-26Put drm version back from 3.0 to 2.2; XFree86 4.1 is the baseline forKeith Whitwell
versioning information.
2001-11-02wrap the MODULE_LICENSE definition.Alan Hourihane
2001-10-22merge kernel 2.4.13-pre6.Alan Hourihane
2001-10-08commit Abraham vd Merwe fix.Alan Hourihane
2001-09-25merge with 2.4.10 kernelAlan Hourihane
2001-09-18remove Linux 2.3.x cruft.Alan Hourihane
2001-09-17bumped the DRM versions (already done in ddx and client side drivers).Alan Hourihane
2001-09-17Use CCE for 2D acceleration (Gerd Knorr)Alan Hourihane
2001-08-22Import of XFree86 4.1.99.1David Dawes
2001-08-19No one's maintaining 2.2.x support - so remove all the cruft.Alan Hourihane
2001-08-14A few warning fixes when actually building under 2.4.9-pre2 + someJeff Hartmann
reformating
2001-08-13Sync with Linus 2.4.9-pre2 + make all nopage routines more alikeJeff Hartmann
2001-08-11new multihead code was missing Voodoo3 2000 and Voodoo4 support.Alan Hourihane
2001-08-10Commit Keith Owens kernel Makefile changes, merge and commit alpha patchJeff Hartmann
set from Jay Estabrook (sans some mga modifications which broke other arch's.)
2001-08-08Update to the code I sent Linus and Alan this morning. Added some missingJeff Hartmann
agp chipsets to drm_agpsupport.h, redid the card detection common code to use a structure (avoids endian porting issues), changed the tdfx driver to use the kernel pci id '#defines'
2001-08-07Avoid compiler warning about r_list being used uninitialized.Jeff Hartmann
2001-08-07Lots of DRM fixes: added new pieces of template code so the ffb driver canJeff Hartmann
be ported, rolled back r128 and i810 version bumps so 4.1.0 works with cvs kernel modules, added Config.in and updated Makefile.kernel, incorporated lots of drm fixes inspired by patches sent by Redhat, made DRM(realloc) usage check for NULL allocations, restructure driver init routines to export dev_priv only when initialized and to check for all error conditions.
2001-07-30Merge the multihead-1-0-0 branch into the trunk, with the exception of theDavid Dawes
glide header files. The changes include: - Brian Paul's changes to the tdfx client-side 3D driver to make it dlopen() the correct glide library (Voodoo3 or Voodoo5). This allows both types of the glide library to co-exist, and allows Voodoo3/Voodoo5 cards to be mixed in multi-head configs. - DRM kernel driver changes to allow a driver to set up multiple instances (minor numbers), one for each card present that the driver supports. This is currently implemented and tested only for the tdfx DRM driver. - Add some missing missing <stdarg.h> includes. - Some log message cleanups. - Change the 2D tdfx driver to access VGA legacy registers via their PCI I/O space access points rather than their legacy addresses, and fix some problems with the way the VGA-related bits are initialised. Status: - With these changes, multi-head direct rendering works with multiple Voodoo3 and/or Voodoo5 cards. This has been tested with two PCI Voodoo3 cards and an AGP Voodoo5 card, and all permutations of those. Caveats: - Xinerama is not supported. If Xinerama is enabled, then direct rendering gets disabled. - The text mode on secondary screens will show junk after the X server exits. - On some hardware, starting the X server on multiple 3dfx cards will result in a hard lockup. One workaround is to enable APIC support in a uni-processor kernel, or use an SMP kernel.
2001-07-23Fixes that allow the modules to be built into the kernelJeff Hartmann
2001-07-20Merge checker fixes from Alan Cox made to the drm in the ac kernel tree.Jeff Hartmann
These aren't really security problems, but Alan has made some arguments that have convinced me that the code should be fixed anyway.
2001-07-20Remove module name hacks because we aren't going to implement this anymoreJeff Hartmann
because of Linus' comments
2001-07-18Add module version name at a lower layer of the code, allows things to beJeff Hartmann
more flexible and allow older module versions to still work. Might not be final code if we move over to DRI kernel module version, but will be if we use XFree86 version. + Only build tdfx.o instead of tdfx-4_1_0.o since tdfx.o has never changed its API.
2001-07-17Someone forgot to bump the r128 and i810 drivers properly before the 4.1.0Jeff Hartmann
release. Better late than never.
2001-07-16Added version string to the end of the kernel module name. This allowsJeff Hartmann
multiple versions of the kernel module to co-exist on one machine.
2001-07-16i810 drm security fixJeff Hartmann
2001-07-13Fix typo in XFREE86_VERSION().Gareth Hughes
2001-06-18Fix 5 security bugs found by the Stanford toolsJeff Hartmann
2001-06-18Forgot to bump date stamp.Gareth Hughes
2001-06-18Enable shared IRQs in DMA template, use in i810 driver.Gareth Hughes
2001-06-14First pass of 4.1.0 merge.David Dawes
2001-06-14Import of XFree86 4.1.0David Dawes
2001-05-23Only authenticated clients can mmap() (Jeff Hartmann).Gareth Hughes
2001-05-17Make the SiS module work again. At least glxinfo reports it's working, yetAlan Hourihane
trying to run the simple apps return 'out of video memory'
2001-05-14finish struct stat type cleanup Fix a build dependencies for the tdfx drmDavid Dawes
module
2001-05-03add new fileAlan Hourihane
2001-05-03Make SiS driver compile with the new templated format. Not tested. minorAlan Hourihane
cleanups
2001-05-03remove deprecated fileAlan Hourihane
2001-05-01Import of XFree86 4.0.99.3David Dawes
2001-04-30fix build of i810 kernel driver for 2.4.3 or greater kernelsAlan Hourihane
2001-04-30- PCIGART patches for Alpha from CompaqKevin E Martin
2001-04-21include linux/sisfb.h, per David GaarenstroomBrian Paul
2001-04-16- Fix typo and remove magic numbersKevin E Martin
2001-04-09Import -f XFree86 4.0.99.2David Dawes
2001-04-06- Fix typoKevin E Martin
- Clean up some macros
2001-04-06search /lib/modules/<version>/build/include first, then the others....Alan Hourihane
2001-04-06Handle drivers that don't have __HAVE_SG defined.Alan Hourihane
2001-04-05Merged ati-pcigart-1-0-0Kevin E Martin
2001-04-03include 2.4.2Alan Hourihane
2001-04-03make 2.4.2 -> 2.4.3 change conditional. works with older than 2.4.3 kernelsAlan Hourihane
again.
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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>

				/* 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)

#define DRM_DIR_NAME  "/dev/dri"
#define DRM_DEV_NAME  "%s/card%d"
#define DRM_PROC_NAME "/proc/dri/" /* For backward Linux compatibility */

#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 */

typedef struct _drmServerInfo {
  int (*debug_print)(const char *format, va_list ap);
  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 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 */
    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;

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 old32;                      \
 		int cur32;			\
 		__asm__ __volatile__(		\
 		"       mb\n"			\
 		"       zap   %4, 0xF0, %0\n"   \
 		"       ldl_l %1, %2\n"		\
 		"       zap   %1, 0xF0, %1\n"   \
                "       cmpeq %0, %1, %1\n"	\
                "       beq   %1, 1f\n"		\
 		"       bis   %5, %5, %1\n"	\
                "       stl_c %1, %2\n"		\
                "1:     xor   %1, 1, %1\n"	\
                "       stl   %1, %3"		\
                : "=r" (old32),                 \
		  "=&r" (cur32),		\
                   "=m" (__drm_dummy_lock(lock)),\
                   "=m" (ret)			\
 		: "r" (old),			\
 		  "r" (new));			\
 	} 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)

#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__) || 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);
extern int           drmClose(int fd);
extern drmVersionPtr drmGetVersion(int fd);
extern drmVersionPtr drmGetLibVersion(int fd);
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);

/* 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 void drmCloseOnce(int fd);

#include "xf86mm.h"

#endif
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