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/*
* Copyright (c) 1997,1998 The XFree86 Project, Inc.
*
* Loosely based on code bearing the following copyright:
*
* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
*
* Author: Dirk Hohndel
*/
#ifndef _VGAHW_H
#define _VGAHW_H
#include <X11/X.h>
#include "misc.h"
#include "input.h"
#include "scrnintstr.h"
#include "colormapst.h"
#include "xf86str.h"
#include "xf86Pci.h"
#include "xf86DDC.h"
#include "globals.h"
#include <X11/extensions/dpmsconst.h>
extern int vgaHWGetIndex(void);
/*
* access macro
*/
#define VGAHWPTR(p) ((vgaHWPtr)((p)->privates[vgaHWGetIndex()].ptr))
/* Standard VGA registers */
#define VGA_ATTR_INDEX 0x3C0
#define VGA_ATTR_DATA_W 0x3C0
#define VGA_ATTR_DATA_R 0x3C1
#define VGA_IN_STAT_0 0x3C2 /* read */
#define VGA_MISC_OUT_W 0x3C2 /* write */
#define VGA_ENABLE 0x3C3
#define VGA_SEQ_INDEX 0x3C4
#define VGA_SEQ_DATA 0x3C5
#define VGA_DAC_MASK 0x3C6
#define VGA_DAC_READ_ADDR 0x3C7
#define VGA_DAC_WRITE_ADDR 0x3C8
#define VGA_DAC_DATA 0x3C9
#define VGA_FEATURE_R 0x3CA /* read */
#define VGA_MISC_OUT_R 0x3CC /* read */
#define VGA_GRAPH_INDEX 0x3CE
#define VGA_GRAPH_DATA 0x3CF
#define VGA_IOBASE_MONO 0x3B0
#define VGA_IOBASE_COLOR 0x3D0
#define VGA_CRTC_INDEX_OFFSET 0x04
#define VGA_CRTC_DATA_OFFSET 0x05
#define VGA_IN_STAT_1_OFFSET 0x0A /* read */
#define VGA_FEATURE_W_OFFSET 0x0A /* write */
/* default number of VGA registers stored internally */
#define VGA_NUM_CRTC 25
#define VGA_NUM_SEQ 5
#define VGA_NUM_GFX 9
#define VGA_NUM_ATTR 21
/* Flags for vgaHWSave() and vgaHWRestore() */
#define VGA_SR_MODE 0x01
#define VGA_SR_FONTS 0x02
#define VGA_SR_CMAP 0x04
#define VGA_SR_ALL (VGA_SR_MODE | VGA_SR_FONTS | VGA_SR_CMAP)
/* Defaults for the VGA memory window */
#define VGA_DEFAULT_PHYS_ADDR 0xA0000
#define VGA_DEFAULT_MEM_SIZE (64 * 1024)
/*
* vgaRegRec contains settings of standard VGA registers.
*/
typedef struct {
unsigned char MiscOutReg; /* */
unsigned char *CRTC; /* Crtc Controller */
unsigned char *Sequencer; /* Video Sequencer */
unsigned char *Graphics; /* Video Graphics */
unsigned char *Attribute; /* Video Atribute */
unsigned char DAC[768]; /* Internal Colorlookuptable */
unsigned char numCRTC; /* number of CRTC registers, def=VGA_NUM_CRTC */
unsigned char numSequencer; /* number of seq registers, def=VGA_NUM_SEQ */
unsigned char numGraphics; /* number of gfx registers, def=VGA_NUM_GFX */
unsigned char numAttribute; /* number of attr registers, def=VGA_NUM_ATTR */
} vgaRegRec, *vgaRegPtr;
typedef struct _vgaHWRec *vgaHWPtr;
typedef void (*vgaHWWriteIndexProcPtr)(vgaHWPtr hwp, CARD8 indx, CARD8 value);
typedef CARD8 (*vgaHWReadIndexProcPtr)(vgaHWPtr hwp, CARD8 indx);
typedef void (*vgaHWWriteProcPtr)(vgaHWPtr hwp, CARD8 value);
typedef CARD8 (*vgaHWReadProcPtr)(vgaHWPtr hwp);
typedef void (*vgaHWMiscProcPtr)(vgaHWPtr hwp);
/*
* vgaHWRec contains per-screen information required by the vgahw module.
*
* Note, the palette referred to by the paletteEnabled, enablePalette and
* disablePalette is the 16-entry (+overscan) EGA-compatible palette accessed
* via the first 17 attribute registers and not the main 8-bit palette.
*/
typedef struct _vgaHWRec {
pointer Base; /* Address of "VGA" memory */
int MapSize; /* Size of "VGA" memory */
unsigned long MapPhys; /* phys location of VGA mem */
int IOBase; /* I/O Base address */
CARD8 * MMIOBase; /* Pointer to MMIO start */
int MMIOOffset; /* base + offset + vgareg
= mmioreg */
pointer FontInfo1; /* save area for fonts in
plane 2 */
pointer FontInfo2; /* save area for fonts in
plane 3 */
pointer TextInfo; /* save area for text */
vgaRegRec SavedReg; /* saved registers */
vgaRegRec ModeReg; /* register settings for
current mode */
Bool ShowOverscan;
Bool paletteEnabled;
Bool cmapSaved;
ScrnInfoPtr pScrn;
vgaHWWriteIndexProcPtr writeCrtc;
vgaHWReadIndexProcPtr readCrtc;
vgaHWWriteIndexProcPtr writeGr;
vgaHWReadIndexProcPtr readGr;
vgaHWReadProcPtr readST00;
vgaHWReadProcPtr readST01;
vgaHWReadProcPtr readFCR;
vgaHWWriteProcPtr writeFCR;
vgaHWWriteIndexProcPtr writeAttr;
vgaHWReadIndexProcPtr readAttr;
vgaHWWriteIndexProcPtr writeSeq;
vgaHWReadIndexProcPtr readSeq;
vgaHWWriteProcPtr writeMiscOut;
vgaHWReadProcPtr readMiscOut;
vgaHWMiscProcPtr enablePalette;
vgaHWMiscProcPtr disablePalette;
vgaHWWriteProcPtr writeDacMask;
vgaHWReadProcPtr readDacMask;
vgaHWWriteProcPtr writeDacWriteAddr;
vgaHWWriteProcPtr writeDacReadAddr;
vgaHWWriteProcPtr writeDacData;
vgaHWReadProcPtr readDacData;
pointer ddc;
IOADDRESS PIOOffset; /* offset + vgareg
= pioreg */
vgaHWReadProcPtr readEnable;
vgaHWWriteProcPtr writeEnable;
struct pci_device *dev;
} vgaHWRec;
/* Some macros that VGA drivers can use in their ChipProbe() function */
#define VGAHW_GET_IOBASE() ((inb(VGA_MISC_OUT_R) & 0x01) ? \
VGA_IOBASE_COLOR : VGA_IOBASE_MONO)
#define OVERSCAN 0x11 /* Index of OverScan register */
/* Flags that define how overscan correction should take place */
#define KGA_FIX_OVERSCAN 1 /* overcan correction required */
#define KGA_ENABLE_ON_ZERO 2 /* if possible enable display at beginning */
/* of next scanline/frame */
#define KGA_BE_TOT_DEC 4 /* always fix problem by setting blank end */
/* to total - 1 */
#define BIT_PLANE 3 /* Which plane we write to in mono mode */
#define BITS_PER_GUN 6
#define COLORMAP_SIZE 256
#if defined(__powerpc__) || defined(__arm__) || defined(__s390__)
#define DACDelay(hw) /* No legacy VGA support */
#else
#define DACDelay(hw) \
do { \
(void)inb((hw)->PIOOffset + (hw)->IOBase + VGA_IN_STAT_1_OFFSET); \
(void)inb((hw)->PIOOffset + (hw)->IOBase + VGA_IN_STAT_1_OFFSET); \
} while (0)
#endif
/* Function Prototypes */
/* vgaHW.c */
typedef void vgaHWProtectProc(ScrnInfoPtr, Bool);
typedef void vgaHWBlankScreenProc(ScrnInfoPtr, Bool);
void vgaHWSetStdFuncs(vgaHWPtr hwp);
void vgaHWSetMmioFuncs(vgaHWPtr hwp, CARD8 *base, int offset);
void vgaHWProtect(ScrnInfoPtr pScrn, Bool on);
vgaHWProtectProc *vgaHWProtectWeak(void);
Bool vgaHWSaveScreen(ScreenPtr pScreen, int mode);
void vgaHWBlankScreen(ScrnInfoPtr pScrn, Bool on);
vgaHWBlankScreenProc *vgaHWBlankScreenWeak(void);
void vgaHWSeqReset(vgaHWPtr hwp, Bool start);
void vgaHWRestoreFonts(ScrnInfoPtr scrninfp, vgaRegPtr restore);
void vgaHWRestoreMode(ScrnInfoPtr scrninfp, vgaRegPtr restore);
void vgaHWRestoreColormap(ScrnInfoPtr scrninfp, vgaRegPtr restore);
void vgaHWRestore(ScrnInfoPtr scrninfp, vgaRegPtr restore, int flags);
void vgaHWSaveFonts(ScrnInfoPtr scrninfp, vgaRegPtr save);
void vgaHWSaveMode(ScrnInfoPtr scrninfp, vgaRegPtr save);
void vgaHWSaveColormap(ScrnInfoPtr scrninfp, vgaRegPtr save);
void vgaHWSave(ScrnInfoPtr scrninfp, vgaRegPtr save, int flags);
Bool vgaHWInit(ScrnInfoPtr scrnp, DisplayModePtr mode);
Bool vgaHWSetRegCounts(ScrnInfoPtr scrp, int numCRTC, int numSequencer,
int numGraphics, int numAttribute);
Bool vgaHWCopyReg(vgaRegPtr dst, vgaRegPtr src);
Bool vgaHWGetHWRec(ScrnInfoPtr scrp);
void vgaHWFreeHWRec(ScrnInfoPtr scrp);
Bool vgaHWMapMem(ScrnInfoPtr scrp);
void vgaHWUnmapMem(ScrnInfoPtr scrp);
void vgaHWGetIOBase(vgaHWPtr hwp);
void vgaHWLock(vgaHWPtr hwp);
void vgaHWUnlock(vgaHWPtr hwp);
void vgaHWEnable(vgaHWPtr hwp);
void vgaHWDisable(vgaHWPtr hwp);
void vgaHWDPMSSet(ScrnInfoPtr pScrn, int PowerManagementMode, int flags);
Bool vgaHWHandleColormaps(ScreenPtr pScreen);
void vgaHWddc1SetSpeed(ScrnInfoPtr pScrn, xf86ddcSpeed speed);
CARD32 vgaHWHBlankKGA(DisplayModePtr mode, vgaRegPtr regp, int nBits,
unsigned int Flags);
CARD32 vgaHWVBlankKGA(DisplayModePtr mode, vgaRegPtr regp, int nBits,
unsigned int Flags);
Bool vgaHWAllocDefaultRegs(vgaRegPtr regp);
DDC1SetSpeedProc vgaHWddc1SetSpeedWeak(void);
SaveScreenProcPtr vgaHWSaveScreenWeak(void);
#endif /* _VGAHW_H */
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