xorg-server-1.4/hw/xfree86/vgahw/vgaHW.h

   1
   2
   3 /*
   4  * Copyright (c) 1997,1998 The XFree86 Project, Inc.
   5  *
   6  * Loosely based on code bearing the following copyright:
   7  *
   8  *   Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
   9  *
  10  * Author: Dirk Hohndel
  11  */
  12
  13 #ifndef _VGAHW_H
  14 #define _VGAHW_H
  15
  16 #include <X11/X.h>
  17 #include "misc.h"
  18 #include "input.h"
  19 #include "scrnintstr.h"
  20 #include "colormapst.h"
  21
  22 #include "xf86str.h"
  23 #include "xf86Pci.h"
  24
  25 #include "xf86DDC.h"
  26
  27 #include "globals.h"
  28 #define DPMS_SERVER
  29 #include <X11/extensions/dpms.h>
  30
  31 extern int vgaHWGetIndex(void);
  32
  33 /*
  34  * access macro
  35  */
  36 #define VGAHWPTR(p) ((vgaHWPtr)((p)->privates[vgaHWGetIndex()].ptr))
  37
  38 /* Standard VGA registers */
  39 #define VGA_ATTR_INDEX          0x3C0
  40 #define VGA_ATTR_DATA_W         0x3C0
  41 #define VGA_ATTR_DATA_R         0x3C1
  42 #define VGA_IN_STAT_0           0x3C2           /* read */
  43 #define VGA_MISC_OUT_W          0x3C2           /* write */
  44 #define VGA_ENABLE              0x3C3
  45 #define VGA_SEQ_INDEX           0x3C4
  46 #define VGA_SEQ_DATA            0x3C5
  47 #define VGA_DAC_MASK            0x3C6
  48 #define VGA_DAC_READ_ADDR       0x3C7
  49 #define VGA_DAC_WRITE_ADDR      0x3C8
  50 #define VGA_DAC_DATA            0x3C9
  51 #define VGA_FEATURE_R           0x3CA           /* read */
  52 #define VGA_MISC_OUT_R          0x3CC           /* read */
  53 #define VGA_GRAPH_INDEX         0x3CE
  54 #define VGA_GRAPH_DATA          0x3CF
  55
  56 #define VGA_IOBASE_MONO         0x3B0
  57 #define VGA_IOBASE_COLOR        0x3D0
  58
  59 #define VGA_CRTC_INDEX_OFFSET   0x04
  60 #define VGA_CRTC_DATA_OFFSET    0x05
  61 #define VGA_IN_STAT_1_OFFSET    0x0A            /* read */
  62 #define VGA_FEATURE_W_OFFSET    0x0A            /* write */
  63
  64 /* default number of VGA registers stored internally */
  65 #define VGA_NUM_CRTC 25
  66 #define VGA_NUM_SEQ 5
  67 #define VGA_NUM_GFX 9
  68 #define VGA_NUM_ATTR 21
  69
  70 /* Flags for vgaHWSave() and vgaHWRestore() */
  71 #define VGA_SR_MODE             0x01
  72 #define VGA_SR_FONTS            0x02
  73 #define VGA_SR_CMAP             0x04
  74 #define VGA_SR_ALL              (VGA_SR_MODE | VGA_SR_FONTS | VGA_SR_CMAP)
  75
  76 /* Defaults for the VGA memory window */
  77 #define VGA_DEFAULT_PHYS_ADDR   0xA0000
  78 #define VGA_DEFAULT_MEM_SIZE    (64 * 1024)
  79
  80 /*
  81  * vgaRegRec contains settings of standard VGA registers.
  82  */
  83 typedef struct {
  84     unsigned char MiscOutReg;     /* */
  85     unsigned char *CRTC;       /* Crtc Controller */
  86     unsigned char *Sequencer;   /* Video Sequencer */
  87     unsigned char *Graphics;    /* Video Graphics */
  88     unsigned char *Attribute;  /* Video Atribute */
  89     unsigned char DAC[768];       /* Internal Colorlookuptable */
  90     unsigned char numCRTC;      /* number of CRTC registers, def=VGA_NUM_CRTC */
  91     unsigned char numSequencer; /* number of seq registers, def=VGA_NUM_SEQ */
  92     unsigned char numGraphics;  /* number of gfx registers, def=VGA_NUM_GFX */
  93     unsigned char numAttribute; /* number of attr registers, def=VGA_NUM_ATTR */
  94 } vgaRegRec, *vgaRegPtr;
  95
  96 typedef struct _vgaHWRec *vgaHWPtr;
  97
  98 typedef void (*vgaHWWriteIndexProcPtr)(vgaHWPtr hwp, CARD8 indx, CARD8 value);
  99 typedef CARD8 (*vgaHWReadIndexProcPtr)(vgaHWPtr hwp, CARD8 indx);
 100 typedef void (*vgaHWWriteProcPtr)(vgaHWPtr hwp, CARD8 value);
 101 typedef CARD8 (*vgaHWReadProcPtr)(vgaHWPtr hwp);
 102 typedef void (*vgaHWMiscProcPtr)(vgaHWPtr hwp);
 103
 104
 105 /*
 106  * vgaHWRec contains per-screen information required by the vgahw module.
 107  *
 108  * Note, the palette referred to by the paletteEnabled, enablePalette and
 109  * disablePalette is the 16-entry (+overscan) EGA-compatible palette accessed
 110  * via the first 17 attribute registers and not the main 8-bit palette.
 111  */
 112 typedef struct _vgaHWRec {
 113     pointer                     Base;           /* Address of "VGA" memory */
 114     int                         MapSize;        /* Size of "VGA" memory */
 115     unsigned long               MapPhys;        /* phys location of VGA mem */
 116     int                         IOBase;         /* I/O Base address */
 117     CARD8 *                     MMIOBase;       /* Pointer to MMIO start */
 118     int                         MMIOOffset;     /* base + offset + vgareg
 119                                                    = mmioreg */
 120     pointer                     FontInfo1;      /* save area for fonts in
 121                                                         plane 2 */
 122     pointer                     FontInfo2;      /* save area for fonts in
 123                                                         plane 3 */
 124     pointer                     TextInfo;       /* save area for text */
 125     vgaRegRec                   SavedReg;       /* saved registers */
 126     vgaRegRec                   ModeReg;        /* register settings for
 127                                                         current mode */
 128     Bool                        ShowOverscan;
 129     Bool                        paletteEnabled;
 130     Bool                        cmapSaved;
 131     ScrnInfoPtr                 pScrn;
 132     vgaHWWriteIndexProcPtr      writeCrtc;
 133     vgaHWReadIndexProcPtr       readCrtc;
 134     vgaHWWriteIndexProcPtr      writeGr;
 135     vgaHWReadIndexProcPtr       readGr;
 136     vgaHWReadProcPtr            readST00;
 137     vgaHWReadProcPtr            readST01;
 138     vgaHWReadProcPtr            readFCR;
 139     vgaHWWriteProcPtr           writeFCR;
 140     vgaHWWriteIndexProcPtr      writeAttr;
 141     vgaHWReadIndexProcPtr       readAttr;
 142     vgaHWWriteIndexProcPtr      writeSeq;
 143     vgaHWReadIndexProcPtr       readSeq;
 144     vgaHWWriteProcPtr           writeMiscOut;
 145     vgaHWReadProcPtr            readMiscOut;
 146     vgaHWMiscProcPtr            enablePalette;
 147     vgaHWMiscProcPtr            disablePalette;
 148     vgaHWWriteProcPtr           writeDacMask;
 149     vgaHWReadProcPtr            readDacMask;
 150     vgaHWWriteProcPtr           writeDacWriteAddr;
 151     vgaHWWriteProcPtr           writeDacReadAddr;
 152     vgaHWWriteProcPtr           writeDacData;
 153     vgaHWReadProcPtr            readDacData;
 154     pointer                     ddc;
 155     IOADDRESS                   PIOOffset;      /* offset + vgareg
 156                                                    = pioreg */
 157     vgaHWReadProcPtr            readEnable;
 158     vgaHWWriteProcPtr           writeEnable;
 159     PCITAG                      Tag;
 160 } vgaHWRec;
 161
 162 /* Some macros that VGA drivers can use in their ChipProbe() function */
 163 #define VGAHW_GET_IOBASE()      ((inb(VGA_MISC_OUT_R) & 0x01) ?               \
 164                                          VGA_IOBASE_COLOR : VGA_IOBASE_MONO)
 165
 166 #define OVERSCAN 0x11           /* Index of OverScan register */
 167
 168 /* Flags that define how overscan correction should take place */
 169 #define KGA_FIX_OVERSCAN  1   /* overcan correction required */
 170 #define KGA_ENABLE_ON_ZERO 2  /* if possible enable display at beginning */
 171                               /* of next scanline/frame                  */
 172 #define KGA_BE_TOT_DEC 4      /* always fix problem by setting blank end */
 173                               /* to total - 1                            */
 174 #define BIT_PLANE 3             /* Which plane we write to in mono mode */
 175 #define BITS_PER_GUN 6
 176 #define COLORMAP_SIZE 256
 177
 178 #if defined(__powerpc__) || defined(__arm__) || defined(__s390__)
 179 #define DACDelay(hw) /* No legacy VGA support */
 180 #else
 181 #define DACDelay(hw)                                                          \
 182         do {                                                                  \
 183             (void)inb((hw)->PIOOffset + (hw)->IOBase + VGA_IN_STAT_1_OFFSET); \
 184             (void)inb((hw)->PIOOffset + (hw)->IOBase + VGA_IN_STAT_1_OFFSET); \
 185         } while (0)
 186 #endif
 187
 188 /* Function Prototypes */
 189
 190 /* vgaHW.c */
 191
 192 typedef void vgaHWProtectProc(ScrnInfoPtr, Bool);
 193 typedef void vgaHWBlankScreenProc(ScrnInfoPtr, Bool);
 194
 195 void vgaHWSetStdFuncs(vgaHWPtr hwp);
 196 void vgaHWSetMmioFuncs(vgaHWPtr hwp, CARD8 *base, int offset);
 197 void vgaHWProtect(ScrnInfoPtr pScrn, Bool on);
 198 vgaHWProtectProc *vgaHWProtectWeak(void);
 199 Bool vgaHWSaveScreen(ScreenPtr pScreen, int mode);
 200 void vgaHWBlankScreen(ScrnInfoPtr pScrn, Bool on);
 201 vgaHWBlankScreenProc *vgaHWBlankScreenWeak(void);
 202 void vgaHWSeqReset(vgaHWPtr hwp, Bool start);
 203 void vgaHWRestoreFonts(ScrnInfoPtr scrninfp, vgaRegPtr restore);
 204 void vgaHWRestoreMode(ScrnInfoPtr scrninfp, vgaRegPtr restore);
 205 void vgaHWRestoreColormap(ScrnInfoPtr scrninfp, vgaRegPtr restore);
 206 void vgaHWRestore(ScrnInfoPtr scrninfp, vgaRegPtr restore, int flags);
 207 void vgaHWSaveFonts(ScrnInfoPtr scrninfp, vgaRegPtr save);
 208 void vgaHWSaveMode(ScrnInfoPtr scrninfp, vgaRegPtr save);
 209 void vgaHWSaveColormap(ScrnInfoPtr scrninfp, vgaRegPtr save);
 210 void vgaHWSave(ScrnInfoPtr scrninfp, vgaRegPtr save, int flags);
 211 Bool vgaHWInit(ScrnInfoPtr scrnp, DisplayModePtr mode);
 212 Bool vgaHWSetRegCounts(ScrnInfoPtr scrp, int numCRTC, int numSequencer,
 213                         int numGraphics, int numAttribute);
 214 Bool vgaHWCopyReg(vgaRegPtr dst, vgaRegPtr src);
 215 Bool vgaHWGetHWRec(ScrnInfoPtr scrp);
 216 void vgaHWFreeHWRec(ScrnInfoPtr scrp);
 217 Bool vgaHWMapMem(ScrnInfoPtr scrp);
 218 void vgaHWUnmapMem(ScrnInfoPtr scrp);
 219 void vgaHWGetIOBase(vgaHWPtr hwp);
 220 void vgaHWLock(vgaHWPtr hwp);
 221 void vgaHWUnlock(vgaHWPtr hwp);
 222 void vgaHWEnable(vgaHWPtr hwp);
 223 void vgaHWDisable(vgaHWPtr hwp);
 224 void vgaHWDPMSSet(ScrnInfoPtr pScrn, int PowerManagementMode, int flags);
 225 Bool vgaHWHandleColormaps(ScreenPtr pScreen);
 226 void vgaHWddc1SetSpeed(ScrnInfoPtr pScrn, xf86ddcSpeed speed);
 227 CARD32 vgaHWHBlankKGA(DisplayModePtr mode, vgaRegPtr regp, int nBits,
 228                unsigned int Flags);
 229 CARD32 vgaHWVBlankKGA(DisplayModePtr mode, vgaRegPtr regp, int nBits,
 230                unsigned int Flags);
 231 Bool vgaHWAllocDefaultRegs(vgaRegPtr regp);
 232
 233 DDC1SetSpeedProc vgaHWddc1SetSpeedWeak(void);
 234 SaveScreenProcPtr vgaHWSaveScreenWeak(void);
 235
 236 #endif /* _VGAHW_H */