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+
+/**************************************************************************
+
+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 1.7 2003/01/28 22:47:09 dawes Exp $ */
+
+/*
+ * Authors:
+ *   Keith Whitwell <keith@tungstengraphics.com>
+ *   David Dawes <dawes@tungstengraphics.com>
+ *
+ */
+
+#if 0
+#define I830DEBUG
+#endif
+
+#ifndef REMAP_RESERVED
+#define REMAP_RESERVED 0
+#endif
+
+#ifndef _I830_H_
+#define _I830_H_
+
+#include "xf86_ansic.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"
+
+#ifdef XF86DRI
+#include "xf86drm.h"
+#include "sarea.h"
+#define _XF86DRI_SERVER_
+#include "xf86dri.h"
+#include "dri.h"
+#include "GL/glxint.h"
+#include "i830_dri.h"
+#endif
+
+#include "common.h"
+
+/* I830 Video BIOS support */
+
+/*
+ * The mode handling is based upon the VESA driver written by
+ * Paulo César Pereira de Andrade <pcpa@conectiva.com.br>.
+ */
+
+typedef struct _VESARec {
+   /* SVGA state */
+   pointer state, pstate;
+   int statePage, stateSize, stateMode;
+   CARD32 *savedPal;
+   int savedScanlinePitch;
+   xf86MonPtr monitor;
+   /* Don't try to set the refresh rate for any modes. */
+   Bool useDefaultRefresh;
+} VESARec, *VESAPtr;
+
+
+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);
+
+/* Linear region allocated in framebuffer. */
+typedef struct _I830MemPool *I830MemPoolPtr;
+typedef struct _I830MemRange *I830MemRangePtr;
+typedef struct _I830MemRange {
+   long Start;
+   long End;
+   long Size;
+   unsigned long Physical;
+   unsigned long Offset;		/* Offset of AGP-allocated portion */
+   unsigned long Alignment;
+   int Key;
+   I830MemPoolPtr Pool;
+} I830MemRange;
+
+typedef struct _I830MemPool {
+   I830MemRange Total;
+   I830MemRange Free;
+   I830MemRange Fixed;
+   I830MemRange Allocated;
+} I830MemPool;
+
+typedef struct {
+   int tail_mask;
+   I830MemRange mem;
+   unsigned char *virtual_start;
+   int head;
+   int tail;
+   int space;
+} I830RingBuffer;
+
+typedef struct {
+   unsigned int Fence[8];
+} I830RegRec, *I830RegPtr;
+
+typedef struct _I830Rec {
+   unsigned char *MMIOBase;
+   unsigned char *FbBase;
+   int cpp;
+
+   unsigned int bufferOffset;		/* for I830SelectBuffer */
+   BoxRec FbMemBox;
+   int CacheLines;
+
+   /* These are set in PreInit and never changed. */
+   unsigned long FbMapSize;
+   unsigned long TotalVideoRam;
+   I830MemRange StolenMemory;		/* pre-allocated memory */
+   unsigned long BIOSMemorySize;	/* min stolen pool size */
+
+   /* These change according to what has been allocated. */
+   long FreeMemory;
+   I830MemRange MemoryAperture;
+   I830MemPool StolenPool;
+   unsigned long allocatedMemory;
+
+   /* Regions allocated either from the above pools, or from agpgart. */
+   I830MemRange FrontBuffer;
+   I830MemRange	CursorMem;
+   I830RingBuffer LpRing;
+   I830MemRange Scratch;
+
+#if REMAP_RESERVED
+   I830MemRange Dummy;
+#endif
+
+#ifdef I830_XV
+   /* For Xvideo */
+   I830MemRange OverlayMem;
+#endif
+
+#ifdef XF86DRI
+   I830MemRange BackBuffer;
+   I830MemRange DepthBuffer;
+   I830MemRange TexMem;
+   I830MemRange BufferMem;
+   I830MemRange ContextMem;
+   int TexGranularity;
+   int drmMinor;
+   Bool have3DWindows;
+#endif
+
+   Bool NeedRingBufferLow;
+   Bool allowPageFlip;
+
+   int auxPitch;
+   int auxPitchBits;
+
+   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];
+
+   int GttBound;
+
+   unsigned char **ScanlineColorExpandBuffers;
+   int NumScanlineColorExpandBuffers;
+   int nextColorExpandBuf;
+
+   I830RegRec SavedReg;
+   I830RegRec ModeReg;
+
+   Bool noAccel;
+   Bool SWCursor;
+   Bool cursorOn;
+   XAAInfoRecPtr AccelInfoRec;
+   xf86CursorInfoPtr CursorInfoRec;
+   CloseScreenProcPtr CloseScreen;
+   ScreenBlockHandlerProcPtr BlockHandler;
+
+   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;
+   Bool overlayOn;
+#endif
+
+   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;
+   drmHandle buffer_map;
+   drmHandle ring_map;
+#endif
+
+   OptionInfoPtr Options;
+
+   /* Stolen memory support */
+   Bool StolenOnly;
+
+   /* Video BIOS support. */
+   vbeInfoPtr pVbe;
+   VbeInfoBlock *vbeInfo;
+   VESAPtr vesa;
+
+   Bool overrideBIOSMemSize;
+   int saveBIOSMemSize;
+   int newBIOSMemSize;
+   Bool useSWF1;
+   int saveSWF1;
+
+   Bool swfSaved;
+   CARD32 saveSWF0;
+   CARD32 saveSWF4;
+
+   /* Use BIOS call 0x5f64 to explicitly enable displays. */
+   Bool enableDisplays;
+   /* Use BIOS call 0x5f05 to set the refresh rate. */
+   Bool useExtendedRefresh;
+
+   int configuredDevices;
+
+   /* These are indexed by the display types */
+   Bool displayAttached[NumDisplayTypes];
+   Bool displayPresent[NumDisplayTypes];
+   BoxRec displaySize[NumDisplayTypes];
+
+   /* [0] is Pipe A, [1] is Pipe B. */
+   int availablePipes;
+   int pipeDevices[MAX_DISPLAY_PIPES];
+   /* [0] is display plane A, [1] is display plane B. */
+   Bool pipeEnabled[MAX_DISPLAY_PIPES];
+   BoxRec pipeDisplaySize[MAX_DISPLAY_PIPES];
+   int planeEnabled[MAX_DISPLAY_PIPES];
+
+   /* Driver phase/state information */
+   Bool starting;
+   Bool closing;
+   Bool suspended;
+
+} I830Rec;
+
+#define I830PTR(p) ((I830Ptr)((p)->driverPrivate))
+#define I830REGPTR(p) (&(I830PTR(p)->ModeReg))
+
+#define I830_SELECT_FRONT	0
+#define I830_SELECT_BACK	1
+#define I830_SELECT_DEPTH	2
+
+/* 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 I830PrintErrorState(ScrnInfoPtr pScrn);
+extern void I830Sync(ScrnInfoPtr pScrn);
+extern void I830InitHWCursor(ScrnInfoPtr pScrn);
+extern Bool I830CursorInit(ScreenPtr pScreen);
+extern void I830EmitInvarientState(ScrnInfoPtr pScrn);
+extern void I830SelectBuffer(ScrnInfoPtr pScrn, int buffer);
+
+extern void I830RefreshRing(ScrnInfoPtr pScrn);
+extern void I830EmitFlush(ScrnInfoPtr pScrn);
+
+extern Bool I830DGAInit(ScreenPtr pScreen);
+
+#ifdef I830_XV
+extern void I830InitVideo(ScreenPtr pScreen);
+extern void I830VideoSwitchModeBefore(ScrnInfoPtr pScrn, DisplayModePtr mode);
+extern void I830VideoSwitchModeAfter(ScrnInfoPtr pScrn, DisplayModePtr mode);
+#endif
+
+#ifdef XF86DRI
+extern Bool I830Allocate3DMemory(ScrnInfoPtr pScrn, const int flags);
+extern void I830SetupMemoryTiling(ScrnInfoPtr pScrn);
+extern Bool I830DRIScreenInit(ScreenPtr pScreen);
+extern Bool I830DRIDoMappings(ScreenPtr pScreen);
+extern void I830DRICloseScreen(ScreenPtr pScreen);
+extern Bool I830DRIFinishScreenInit(ScreenPtr pScreen);
+#endif
+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);
+
+extern void I830ResetAllocations(ScrnInfoPtr pScrn, const int flags);
+extern long I830CheckAvailableMemory(ScrnInfoPtr pScrn);
+extern long I830GetExcessMemoryAllocations(ScrnInfoPtr pScrn);
+extern Bool I830Allocate2DMemory(ScrnInfoPtr pScrn, const int flags);
+extern Bool I830DoPoolAllocation(ScrnInfoPtr pScrn, I830MemPool *pool);
+extern Bool I830FixupOffsets(ScrnInfoPtr pScrn);
+extern Bool I830BindGARTMemory(ScrnInfoPtr pScrn);
+extern Bool I830UnbindGARTMemory(ScrnInfoPtr pScrn);
+extern unsigned long I830AllocVidMem(ScrnInfoPtr pScrn, I830MemRange *result,
+				     I830MemPool *pool, unsigned long size,
+				     unsigned long alignment, int flags);
+
+extern void I830PrintAllRegisters(I830RegPtr i830Reg);
+extern void I830ReadAllRegisters(I830Ptr pI830, I830RegPtr i830Reg);
+
+extern void I830ChangeFrontbuffer(ScrnInfoPtr pScrn,int buffer);
+
+/*
+ * 12288 is set as the maximum, chosen because it is enough for
+ * 1920x1440@32bpp with a 2048 pixel line pitch with some to spare.
+ */
+#define I830_MAXIMUM_VBIOS_MEM		12288
+#define I830_DEFAULT_VIDEOMEM_2D	(MB(8) / 1024)
+#define I830_DEFAULT_VIDEOMEM_3D	(MB(32) / 1024)
+
+/* Flags for memory allocation function */
+#define FROM_ANYWHERE			0x00000000
+#define FROM_POOL_ONLY			0x00000001
+#define FROM_NEW_ONLY			0x00000002
+#define FROM_MASK			0x0000000f
+
+#define ALLOCATE_AT_TOP			0x00000010
+#define ALLOCATE_AT_BOTTOM		0x00000020
+#define FORCE_GAPS			0x00000040
+
+#define NEED_PHYSICAL_ADDR		0x00000100
+#define ALIGN_BOTH_ENDS			0x00000200
+#define FORCE_LOW			0x00000400
+
+#define ALLOC_NO_TILING			0x00001000
+#define ALLOC_INITIAL			0x00002000
+
+#define ALLOCATE_DRY_RUN		0x80000000
+
+
+#endif /* _I830_H_ */