path: root/src/i830.h

/**************************************************************************

Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
Copyright © 2002 David Dawes

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, sub license, 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 NON-INFRINGEMENT.
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.

**************************************************************************/
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/i810/i830.h,v 1.12 2004/01/07 03:43:19 dawes Exp $ */

/*
 * Authors:
 *   Keith Whitwell <keith@tungstengraphics.com>
 *   David Dawes <dawes@xfree86.org>
 *
 */

#if 0
#define I830DEBUG
#endif

#ifndef REMAP_RESERVED
#define REMAP_RESERVED 0
#endif

#ifndef _I830_H_
#define _I830_H_

#include "xf86_OSproc.h"
#include "compiler.h"
#include "xf86PciInfo.h"
#include "xf86Pci.h"
#include "i810_reg.h"
#include "xaa.h"
#include "xf86Cursor.h"
#include "xf86xv.h"
#include "xf86int10.h"
#include "vbe.h"
#include "vgaHW.h"
#include "xf86Crtc.h"
#include "xf86RandR12.h"

#ifdef XF86DRI
#include "xf86drm.h"
#include "sarea.h"
#define _XF86DRI_SERVER_
#include "dri.h"
#include "GL/glxint.h"
#include "i830_dri.h"
#ifdef DAMAGE
#include "damage.h"
#endif
#endif

#ifdef I830_USE_EXA
#include "exa.h"
Bool I830EXAInit(ScreenPtr pScreen);
#define EXA_LINEAR_EXTRA	(64*1024)
unsigned long long I830TexOffsetStart(PixmapPtr pPix);
#endif

#ifdef I830_USE_XAA
Bool I830XAAInit(ScreenPtr pScreen);
#endif

typedef struct _I830OutputRec I830OutputRec, *I830OutputPtr;

#include "common.h"
#include "i830_sdvo.h"
#include "i2c_vid.h"

/* I830 Video support */
#define NEED_REPLIES				/* ? */
#define EXTENSION_PROC_ARGS void *
#include "extnsionst.h" 			/* required */
#include <X11/extensions/panoramiXproto.h> 	/* required */

/*
 * The mode handling is based upon the VESA driver written by
 * Paulo César Pereira de Andrade <pcpa@conectiva.com.br>.
 */

#ifdef XF86DRI
#define I830_MM_MINPAGES 512
#define I830_MM_MAXSIZE  (32*1024)
#define I830_KERNEL_MM  (1 << 0) /* Initialize the kernel memory manager*/
#define I830_KERNEL_TEX (1 << 1) /* Allocate texture memory pool */
#endif

typedef struct _I830Rec *I830Ptr;

typedef void (*I830WriteIndexedByteFunc)(I830Ptr pI830, IOADDRESS addr,
                                         CARD8 index, CARD8 value);
typedef CARD8(*I830ReadIndexedByteFunc)(I830Ptr pI830, IOADDRESS addr,
                                        CARD8 index);
typedef void (*I830WriteByteFunc)(I830Ptr pI830, IOADDRESS addr, CARD8 value);
typedef CARD8(*I830ReadByteFunc)(I830Ptr pI830, IOADDRESS addr);

/** Record of a linear allocation in the aperture. */
typedef struct _i830_memory i830_memory;
struct _i830_memory {
    /** Offset of the allocation in card VM */
    unsigned long offset;
    /** End of the allocation in card VM */
    unsigned long end;
    /**
     * Requested size of the allocation: doesn't count padding.
     *
     * Any bound memory will cover offset to (offset + size).
     */
    unsigned long size;
    /**
     * Physical (or more properly, bus) address of the allocation.
     * Only set if requested during allocation.
     */
    unsigned long bus_addr;
    /** AGP memory handle */
    int key;
    /**
     * Whether or not the AGP memory (if any) is currently bound.
     */
    Bool bound;
    /**
     * Offset that the AGP-allocated memory (if any) is to be bound to.
     *
     * This is either @offset or pI830->stolen_size
     */
    unsigned long agp_offset;

    /** Description of the allocation, for logging */
    char *name;

    /** @{
     * Memory allocator linked list pointers
     */
    i830_memory *next;
    i830_memory *prev;
    /** @} */

};

typedef struct {
   int tail_mask;
   i830_memory *mem;
   unsigned char *virtual_start;
   int head;
   int tail;
   int space;
} I830RingBuffer;

typedef struct {
   int            lastInstance;
   int            refCount;
   ScrnInfoPtr    pScrn_1;
   ScrnInfoPtr    pScrn_2;
   int            RingRunning;
#ifdef I830_XV
   int            XvInUse;
#endif
} I830EntRec, *I830EntPtr;

/* store information about an Ixxx DVO */
/* The i830->i865 use multiple DVOs with multiple i2cs */
/* the i915, i945 have a single sDVO i2c bus - which is different */
#define MAX_OUTPUTS 6

#define I830_I2C_BUS_DVO 1
#define I830_I2C_BUS_SDVO 2

/* these are outputs from the chip - integrated only 
   external chips are via DVO or SDVO output */
#define I830_OUTPUT_UNUSED 0
#define I830_OUTPUT_ANALOG 1
#define I830_OUTPUT_DVO_TMDS 2
#define I830_OUTPUT_DVO_LVDS 3
#define I830_OUTPUT_DVO_TVOUT 4
#define I830_OUTPUT_SDVO 5
#define I830_OUTPUT_LVDS 6
#define I830_OUTPUT_TVOUT 7

struct _I830DVODriver {
   int type;
   char *modulename;
   char *fntablename;
   unsigned int dvo_reg;
   int address;
   const char **symbols;
   I830I2CVidOutputRec *vid_rec;
   void *dev_priv;
   pointer modhandle;
   DisplayModePtr panel_fixed_mode;
   Bool panel_wants_dither;
};

extern const char *i830_output_type_names[];

typedef struct _I830CrtcPrivateRec {
    int			    pipe;

    Bool    		    enabled;
    
    /* Lookup table values to be set when the CRTC is enabled */
    CARD8 lut_r[256], lut_g[256], lut_b[256];

#ifdef I830_USE_XAA
    FBLinearPtr rotate_mem_xaa;
#endif
#ifdef I830_USE_EXA
    ExaOffscreenArea *rotate_mem_exa;
#endif
    /* Card virtual address of the cursor */
    unsigned long cursor_offset;
    unsigned long cursor_argb_offset;
    /* Physical or virtual addresses of the cursor for setting in the cursor
     * registers.
     */
    unsigned long cursor_addr;
    unsigned long cursor_argb_addr;
    Bool	cursor_is_argb;
} I830CrtcPrivateRec, *I830CrtcPrivatePtr;

#define I830CrtcPrivate(c) ((I830CrtcPrivatePtr) (c)->driver_private)

typedef struct _I830OutputPrivateRec {
   int			    type;
   I2CBusPtr		    pI2CBus;
   I2CBusPtr		    pDDCBus;
   struct _I830DVODriver    *i2c_drv;
   Bool			    load_detect_temp;
   int                      pipe_mask;
   int			    clone_mask;
   /** Output-private structure.  Should replace i2c_drv */
   void			    *dev_priv;
} I830OutputPrivateRec, *I830OutputPrivatePtr;

#define I830OutputPrivate(o) ((I830OutputPrivatePtr) (o)->driver_private)

/** enumeration of 3d consumers so some can maintain invariant state. */
enum last_3d {
    LAST_3D_OTHER,
    LAST_3D_VIDEO,
    LAST_3D_RENDER,
    LAST_3D_ROTATION
};

typedef struct _I830Rec {
   unsigned char *MMIOBase;
   unsigned char *GTTBase;
   unsigned char *FbBase;
   int cpp;

   I830EntPtr entityPrivate;	
   int init;

   unsigned int bufferOffset;		/* for I830SelectBuffer */
   BoxRec FbMemBox;
   BoxRec FbMemBox2;
   int CacheLines;

   /* These are set in PreInit and never changed. */
   long FbMapSize;

   i830_memory *memory_list;	/**< Linked list of video memory allocations */
   long stolen_size;		/**< bytes of pre-bound stolen memory */
   int gtt_acquired;		/**< whether we currently own the AGP */

   i830_memory *front_buffer;
   i830_memory *front_buffer_2;
   i830_memory *compressed_front_buffer;
   i830_memory *compressed_ll_buffer;
   /* One big buffer for all cursors for kernels that support this */
   i830_memory *cursor_mem;
   /* separate small buffers for kernels that support this */
   i830_memory *cursor_mem_classic[2];
   i830_memory *cursor_mem_argb[2];
   i830_memory *xaa_scratch;
   i830_memory *xaa_scratch_2;
#ifdef I830_USE_EXA
   i830_memory *exa_offscreen;
   i830_memory *exa_965_state;
#endif
   /* Regions allocated either from the above pools, or from agpgart. */
   I830RingBuffer *LpRing;

#ifdef I830_XV
   /* For Xvideo */
   i830_memory *overlay_regs;
#endif
   XF86ModReqInfo shadowReq; /* to test for later libshadow */
   Rotation rotation;
   void (*PointerMoved)(int, int, int);
   CreateScreenResourcesProcPtr    CreateScreenResources;

   i830_memory *logical_context;

   unsigned int front_tiled;

#ifdef XF86DRI
   i830_memory *back_buffer;
   i830_memory *third_buffer;
   i830_memory *depth_buffer;
   i830_memory *textures;		/**< Compatibility texture memory */
   i830_memory *memory_manager;		/**< DRI memory manager aperture */
   i830_memory *hw_status;		/* for G33 hw status page alloc */

   int TexGranularity;
   int drmMinor;
   int mmModeFlags;
   int mmSize;

   unsigned int back_tiled;
   unsigned int third_tiled;
   unsigned int depth_tiled;

   Bool want_vblank_interrupts;
#ifdef DAMAGE
   DamagePtr pDamage;
   RegionRec driRegion;
#endif
#endif

   Bool NeedRingBufferLow;
   Bool allowPageFlip;
   Bool TripleBuffer;
   Bool tiling;
   Bool fb_compression;

   int backPitch;

   Bool CursorNeedsPhysical;
 
   DGAModePtr DGAModes;
   int numDGAModes;
   Bool DGAactive;
   int DGAViewportStatus;

   int Chipset;
   unsigned long LinearAddr;
   unsigned long MMIOAddr;
   IOADDRESS ioBase;
   EntityInfoPtr pEnt;
   pciVideoPtr PciInfo;
   PCITAG PciTag;
   CARD8 variant;

   unsigned int BR[20];

   unsigned char **ScanlineColorExpandBuffers;
   int NumScanlineColorExpandBuffers;
   int nextColorExpandBuf;

    /**
     * Values to be programmed into the fence registers.
     *
     * Pre-965, this is a list of FENCE_NR (8) CARD32 registers that
     * contain their start, size, and pitch.  On the 965, it is a list of
     * FENCE_NEW_NR CARD32s for the start and pitch fields (low 32 bits) of
     * the fence registers followed by FENCE_NEW_NR CARD32s for the end fields
     * (high 32 bits) of the fence registers.
     */
   unsigned int fence[FENCE_NEW_NR * 2];
   unsigned int next_fence;

   Bool useEXA;
   Bool noAccel;
   Bool SWCursor;
#ifdef I830_USE_XAA
   XAAInfoRecPtr AccelInfoRec;

   /* additional XAA accelerated Composite support */
   CompositeProcPtr saved_composite;
   Bool (*xaa_check_composite)(int op, PicturePtr pSrc, PicturePtr pMask,
			       PicturePtr pDst);
   Bool (*xaa_prepare_composite)(int op, PicturePtr pSrc, PicturePtr pMask,
				 PicturePtr pDst, PixmapPtr pSrcPixmap,
				 PixmapPtr pMaskPixmap, PixmapPtr pDstPixmap);
   void (*xaa_composite)(PixmapPtr pDst, int xSrc, int ySrc,
			 int xMask, int yMask, int xDst, int yDst,
			 int w, int h);
   void (*xaa_done_composite)(PixmapPtr pDst);
#endif
   CloseScreenProcPtr CloseScreen;

#ifdef I830_USE_EXA
   unsigned int copy_src_pitch;
   unsigned int copy_src_off;
   ExaDriverPtr	EXADriverPtr;
#endif

   I830WriteIndexedByteFunc writeControl;
   I830ReadIndexedByteFunc readControl;
   I830WriteByteFunc writeStandard;
   I830ReadByteFunc readStandard;

   Bool XvDisabled;			/* Xv disabled in PreInit. */
   Bool XvEnabled;			/* Xv enabled for this generation. */

#ifdef I830_XV
   int colorKey;
   XF86VideoAdaptorPtr adaptor;
   ScreenBlockHandlerProcPtr BlockHandler;
   Bool *overlayOn;
#endif

   /* EXA render state */
   float scale_units[2][2];
  /** Transform pointers for src/mask, or NULL if identity */
   PictTransform *transform[2];
   /* i915 EXA render state */
   CARD32 mapstate[6];
   CARD32 samplerstate[6];

   Bool directRenderingDisabled;	/* DRI disabled in PreInit. */
   Bool directRenderingEnabled;		/* DRI enabled this generation. */

#ifdef XF86DRI
   Bool directRenderingOpen;
   int LockHeld;
   DRIInfoPtr pDRIInfo;
   int drmSubFD;
   int numVisualConfigs;
   __GLXvisualConfig *pVisualConfigs;
   I830ConfigPrivPtr pVisualConfigsPriv;
   drm_handle_t buffer_map;
   drm_handle_t ring_map;
#endif

   /* Broken-out options. */
   OptionInfoPtr Options;

   Bool StolenOnly;

   Bool swfSaved;
   CARD32 saveSWF0;
   CARD32 saveSWF4;

   Bool checkDevices;

   /* Driver phase/state information */
   Bool preinit;
   Bool starting;
   Bool closing;
   Bool suspended;
   Bool leaving;

   /* fbOffset converted to (x, y). */
   int xoffset;
   int yoffset;

   unsigned int SaveGeneration;

   OsTimerPtr devicesTimer;

   int ddc2;

   CARD32 saveDSPACNTR;
   CARD32 saveDSPBCNTR;
   CARD32 savePIPEACONF;
   CARD32 savePIPEBCONF;
   CARD32 savePIPEASRC;
   CARD32 savePIPEBSRC;
   CARD32 saveFPA0;
   CARD32 saveFPA1;
   CARD32 saveDPLL_A;
   CARD32 saveDPLL_A_MD;
   CARD32 saveHTOTAL_A;
   CARD32 saveHBLANK_A;
   CARD32 saveHSYNC_A;
   CARD32 saveVTOTAL_A;
   CARD32 saveVBLANK_A;
   CARD32 saveVSYNC_A;
   CARD32 saveBCLRPAT_A;
   CARD32 saveDSPASTRIDE;
   CARD32 saveDSPASIZE;
   CARD32 saveDSPAPOS;
   CARD32 saveDSPABASE;
   CARD32 saveDSPASURF;
   CARD32 saveFPB0;
   CARD32 saveFPB1;
   CARD32 saveDPLL_B;
   CARD32 saveDPLL_B_MD;
   CARD32 saveHTOTAL_B;
   CARD32 saveHBLANK_B;
   CARD32 saveHSYNC_B;
   CARD32 saveVTOTAL_B;
   CARD32 saveVBLANK_B;
   CARD32 saveVSYNC_B;
   CARD32 saveBCLRPAT_B;
   CARD32 saveDSPBSTRIDE;
   CARD32 saveDSPBSIZE;
   CARD32 saveDSPBPOS;
   CARD32 saveDSPBBASE;
   CARD32 saveDSPBSURF;
   CARD32 saveVCLK_DIVISOR_VGA0;
   CARD32 saveVCLK_DIVISOR_VGA1;
   CARD32 saveVCLK_POST_DIV;
   CARD32 saveVGACNTRL;
   CARD32 saveADPA;
   CARD32 saveLVDS;
   CARD32 saveDVOA;
   CARD32 saveDVOB;
   CARD32 saveDVOC;
   CARD32 savePP_ON;
   CARD32 savePP_OFF;
   CARD32 savePP_CONTROL;
   CARD32 savePP_CYCLE;
   CARD32 savePFIT_CONTROL;
   CARD32 savePaletteA[256];
   CARD32 savePaletteB[256];
   CARD32 saveSWF[17];
   CARD32 saveBLC_PWM_CTL;
   CARD32 saveFBC_CFB_BASE;
   CARD32 saveFBC_LL_BASE;
   CARD32 saveFBC_CONTROL2;
   CARD32 saveFBC_CONTROL;

   enum last_3d *last_3d;

   /** Enables logging of debug output related to mode switching. */
   Bool debug_modes;
} I830Rec;

#define I830PTR(p) ((I830Ptr)((p)->driverPrivate))

#define I830_SELECT_FRONT	0
#define I830_SELECT_BACK	1
#define I830_SELECT_DEPTH	2
#define I830_SELECT_THIRD	3

/* I830 specific functions */
extern int I830WaitLpRing(ScrnInfoPtr pScrn, int n, int timeout_millis);
extern void I830SetPIOAccess(I830Ptr pI830);
extern void I830SetMMIOAccess(I830Ptr pI830);
extern void I830Sync(ScrnInfoPtr pScrn);
extern void I830InitHWCursor(ScrnInfoPtr pScrn);
extern void I830SetPipeCursor (xf86CrtcPtr crtc, Bool force);
extern Bool I830CursorInit(ScreenPtr pScreen);
extern void IntelEmitInvarientState(ScrnInfoPtr pScrn);
extern void I830EmitInvarientState(ScrnInfoPtr pScrn);
extern void I915EmitInvarientState(ScrnInfoPtr pScrn);
extern void I830SelectBuffer(ScrnInfoPtr pScrn, int buffer);

/* CRTC-based cursor functions */
void
i830_crtc_load_cursor_image (xf86CrtcPtr crtc, unsigned char *src);

#ifdef ARGB_CURSOR
void
i830_crtc_load_cursor_argb (xf86CrtcPtr crtc, CARD32 *image);
#endif

void
i830_crtc_set_cursor_position (xf86CrtcPtr crtc, int x, int y);

void
i830_crtc_show_cursor (xf86CrtcPtr crtc);

void
i830_crtc_hide_cursor (xf86CrtcPtr crtc);

void
i830_crtc_set_cursor_colors (xf86CrtcPtr crtc, int bg, int fg);

extern void I830RefreshRing(ScrnInfoPtr pScrn);
extern void I830EmitFlush(ScrnInfoPtr pScrn);

#ifdef I830_XV
extern void I830InitVideo(ScreenPtr pScreen);
extern void i830_crtc_dpms_video(xf86CrtcPtr crtc, Bool on);
#endif

int
i830_crtc_pipe (xf86CrtcPtr crtc);

Bool
i830_pipe_a_require_activate (ScrnInfoPtr scrn);

void
i830_pipe_a_require_deactivate (ScrnInfoPtr scrn);

#ifdef XF86DRI
extern Bool I830Allocate3DMemory(ScrnInfoPtr pScrn, const int flags);
extern void I830SetupMemoryTiling(ScrnInfoPtr pScrn);
extern Bool I830DRIScreenInit(ScreenPtr pScreen);
extern Bool I830CheckDRIAvailable(ScrnInfoPtr pScrn);
extern Bool I830DRIDoMappings(ScreenPtr pScreen);
extern Bool I830DRIResume(ScreenPtr pScreen);
extern void I830DRICloseScreen(ScreenPtr pScreen);
extern Bool I830DRIFinishScreenInit(ScreenPtr pScreen);
extern Bool I830UpdateDRIBuffers(ScrnInfoPtr pScrn, drmI830Sarea *sarea);
extern void I830DRIUnmapScreenRegions(ScrnInfoPtr pScrn, drmI830Sarea *sarea);
extern Bool I830DRIMapScreenRegions(ScrnInfoPtr pScrn, drmI830Sarea *sarea);
extern void I830DRIUnlock(ScrnInfoPtr pScrn);
extern Bool I830DRILock(ScrnInfoPtr pScrn);
extern Bool I830DRISetVBlankInterrupt (ScrnInfoPtr pScrn, Bool on);
#endif

unsigned long intel_get_pixmap_offset(PixmapPtr pPix);
unsigned long intel_get_pixmap_pitch(PixmapPtr pPix);
extern Bool I830AccelInit(ScreenPtr pScreen);
extern void I830SetupForScreenToScreenCopy(ScrnInfoPtr pScrn, int xdir,
					   int ydir, int rop,
					   unsigned int planemask,
					   int trans_color);
extern void I830SubsequentScreenToScreenCopy(ScrnInfoPtr pScrn, int srcX,
					     int srcY, int dstX, int dstY,
					     int w, int h);
extern void I830SetupForSolidFill(ScrnInfoPtr pScrn, int color, int rop,
				  unsigned int planemask);
extern void I830SubsequentSolidFillRect(ScrnInfoPtr pScrn, int x, int y,
					int w, int h);

Bool i830_allocator_init(ScrnInfoPtr pScrn, unsigned long offset,
			 unsigned long size);
void i830_describe_allocations(ScrnInfoPtr pScrn, int verbosity,
			       const char *prefix);
void i830_reset_allocations(ScrnInfoPtr pScrn);
void i830_free_3d_memory(ScrnInfoPtr pScrn);
void i830_free_memory(ScrnInfoPtr pScrn, i830_memory *mem);
extern long I830CheckAvailableMemory(ScrnInfoPtr pScrn);
Bool i830_allocate_2d_memory(ScrnInfoPtr pScrn);
Bool i830_allocate_texture_memory(ScrnInfoPtr pScrn);
Bool i830_allocate_3d_memory(ScrnInfoPtr pScrn);

extern Bool I830IsPrimary(ScrnInfoPtr pScrn);

extern Bool I830I2CInit(ScrnInfoPtr pScrn, I2CBusPtr *bus_ptr, int i2c_reg,
			char *name);

/* return a mask of output indices matching outputs against type_mask */
int i830_output_clones (ScrnInfoPtr pScrn, int type_mask);

/* i830_display.c */
Bool
i830PipeHasType (xf86CrtcPtr crtc, int type);

/* i830_crt.c */
void i830_crt_init(ScrnInfoPtr pScrn);

/* i830_dvo.c */
void i830_dvo_init(ScrnInfoPtr pScrn);

/* i830_lvds.c */
void i830_lvds_init(ScrnInfoPtr pScrn);

extern void i830MarkSync(ScrnInfoPtr pScrn);
extern void i830WaitSync(ScrnInfoPtr pScrn);

/* i830_memory.c */
Bool i830_bind_all_memory(ScrnInfoPtr pScrn);
Bool i830_unbind_all_memory(ScrnInfoPtr pScrn);

Bool I830BindAGPMemory(ScrnInfoPtr pScrn);
Bool I830UnbindAGPMemory(ScrnInfoPtr pScrn);
#ifdef I830_USE_XAA
FBLinearPtr
i830_xf86AllocateOffscreenLinear(ScreenPtr pScreen, int length,
				 int granularity,
				 MoveLinearCallbackProcPtr moveCB,
				 RemoveLinearCallbackProcPtr removeCB,
				 pointer privData);
#endif /* I830_USE_EXA */

/* i830_modes.c */
DisplayModePtr i830_ddc_get_modes(xf86OutputPtr output);

/* i830_tv.c */
void i830_tv_init(ScrnInfoPtr pScrn);

/* i830_render.c */
Bool i830_check_composite(int op, PicturePtr pSrc, PicturePtr pMask,
			  PicturePtr pDst);
Bool i830_prepare_composite(int op, PicturePtr pSrc, PicturePtr pMask,
			    PicturePtr pDst, PixmapPtr pSrcPixmap,
			    PixmapPtr pMaskPixmap, PixmapPtr pDstPixmap);
void i830_composite(PixmapPtr pDst, int srcX, int srcY,
		    int maskX, int maskY, int dstX, int dstY, int w, int h);
void i830_done_composite(PixmapPtr pDst);
/* i915_render.c */
Bool i915_check_composite(int op, PicturePtr pSrc, PicturePtr pMask,
			  PicturePtr pDst);
Bool i915_prepare_composite(int op, PicturePtr pSrc, PicturePtr pMask,
			    PicturePtr pDst, PixmapPtr pSrcPixmap,
			    PixmapPtr pMaskPixmap, PixmapPtr pDstPixmap);
/* i965_render.c */
Bool i965_check_composite(int op, PicturePtr pSrc, PicturePtr pMask,
			  PicturePtr pDst);
Bool i965_prepare_composite(int op, PicturePtr pSrc, PicturePtr pMask,
			    PicturePtr pDst, PixmapPtr pSrcPixmap,
			    PixmapPtr pMaskPixmap, PixmapPtr pDstPixmap);
void i965_composite(PixmapPtr pDst, int srcX, int srcY,
		    int maskX, int maskY, int dstX, int dstY, int w, int h);

void
i830_get_transformed_coordinates(int x, int y, PictTransformPtr transform,
				 float *x_out, float *y_out);

void i830_enter_render(ScrnInfoPtr);

static inline int i830_tiling_supported(I830Ptr pI830)
{
    if (IS_I965G(pI830))
	return FALSE;
    return TRUE;
}

static inline int i830_fb_compression_supported(I830Ptr pI830)
{
    if (!IS_MOBILE(pI830))
	return FALSE;
    if (IS_I810(pI830) || IS_I815(pI830) || IS_I830(pI830))
	return FALSE;
    return TRUE;
}

extern const int I830PatternROP[16];
extern const int I830CopyROP[16];

/* Flags for memory allocation function */
#define NEED_PHYSICAL_ADDR		0x00000001
#define ALIGN_BOTH_ENDS			0x00000002

/* Chipset registers for VIDEO BIOS memory RW access */
#define _855_DRAM_RW_CONTROL 0x58
#define _845_DRAM_RW_CONTROL 0x90
#define DRAM_WRITE    0x33330000

/* 
 * Xserver MM compatibility. Remove code guarded by this when the
 * XServer contains the libdrm mm code
 */
#undef XSERVER_LIBDRM_MM

#endif /* _I830_H_ */