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xserver-multidpi/hw/xfree86/vgahw/vgaHW.h
Paulo Cesar Pereira de Andrade 49f77fff14 Rework symbol visibility for easier maintenance 
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.

  This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)

  LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.

  xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
2008-12-03 05:43:34 -02:00

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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"
#define DPMS_SERVER
#include <X11/extensions/dpms.h>
extern _X_EXPORT 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);
extern _X_EXPORT void vgaHWSetStdFuncs(vgaHWPtr hwp);
extern _X_EXPORT void vgaHWSetMmioFuncs(vgaHWPtr hwp, CARD8 *base, int offset);
extern _X_EXPORT void vgaHWProtect(ScrnInfoPtr pScrn, Bool on);
extern _X_EXPORT vgaHWProtectProc *vgaHWProtectWeak(void);
extern _X_EXPORT Bool vgaHWSaveScreen(ScreenPtr pScreen, int mode);
extern _X_EXPORT void vgaHWBlankScreen(ScrnInfoPtr pScrn, Bool on);
extern _X_EXPORT vgaHWBlankScreenProc *vgaHWBlankScreenWeak(void);
extern _X_EXPORT void vgaHWSeqReset(vgaHWPtr hwp, Bool start);
extern _X_EXPORT void vgaHWRestoreFonts(ScrnInfoPtr scrninfp, vgaRegPtr restore);
extern _X_EXPORT void vgaHWRestoreMode(ScrnInfoPtr scrninfp, vgaRegPtr restore);
extern _X_EXPORT void vgaHWRestoreColormap(ScrnInfoPtr scrninfp, vgaRegPtr restore);
extern _X_EXPORT void vgaHWRestore(ScrnInfoPtr scrninfp, vgaRegPtr restore, int flags);
extern _X_EXPORT void vgaHWSaveFonts(ScrnInfoPtr scrninfp, vgaRegPtr save);
extern _X_EXPORT void vgaHWSaveMode(ScrnInfoPtr scrninfp, vgaRegPtr save);
extern _X_EXPORT void vgaHWSaveColormap(ScrnInfoPtr scrninfp, vgaRegPtr save);
extern _X_EXPORT void vgaHWSave(ScrnInfoPtr scrninfp, vgaRegPtr save, int flags);
extern _X_EXPORT Bool vgaHWInit(ScrnInfoPtr scrnp, DisplayModePtr mode);
extern _X_EXPORT Bool vgaHWSetRegCounts(ScrnInfoPtr scrp, int numCRTC, int numSequencer,
int numGraphics, int numAttribute);
extern _X_EXPORT Bool vgaHWCopyReg(vgaRegPtr dst, vgaRegPtr src);
extern _X_EXPORT Bool vgaHWGetHWRec(ScrnInfoPtr scrp);
extern _X_EXPORT void vgaHWFreeHWRec(ScrnInfoPtr scrp);
extern _X_EXPORT Bool vgaHWMapMem(ScrnInfoPtr scrp);
extern _X_EXPORT void vgaHWUnmapMem(ScrnInfoPtr scrp);
extern _X_EXPORT void vgaHWGetIOBase(vgaHWPtr hwp);
extern _X_EXPORT void vgaHWLock(vgaHWPtr hwp);
extern _X_EXPORT void vgaHWUnlock(vgaHWPtr hwp);
extern _X_EXPORT void vgaHWEnable(vgaHWPtr hwp);
extern _X_EXPORT void vgaHWDisable(vgaHWPtr hwp);
extern _X_EXPORT void vgaHWDPMSSet(ScrnInfoPtr pScrn, int PowerManagementMode, int flags);
extern _X_EXPORT Bool vgaHWHandleColormaps(ScreenPtr pScreen);
extern _X_EXPORT void vgaHWddc1SetSpeed(ScrnInfoPtr pScrn, xf86ddcSpeed speed);
extern _X_EXPORT CARD32 vgaHWHBlankKGA(DisplayModePtr mode, vgaRegPtr regp, int nBits,
unsigned int Flags);
extern _X_EXPORT CARD32 vgaHWVBlankKGA(DisplayModePtr mode, vgaRegPtr regp, int nBits,
unsigned int Flags);
extern _X_EXPORT Bool vgaHWAllocDefaultRegs(vgaRegPtr regp);
extern _X_EXPORT DDC1SetSpeedProc vgaHWddc1SetSpeedWeak(void);
extern _X_EXPORT SaveScreenProcPtr vgaHWSaveScreenWeak(void);
#endif /* _VGAHW_H */
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