diff options
Diffstat (limited to 'src/mesa/drivers/dos/vbeaf.h')
| -rw-r--r-- | src/mesa/drivers/dos/vbeaf.h | 813 |
1 files changed, 813 insertions, 0 deletions
diff --git a/src/mesa/drivers/dos/vbeaf.h b/src/mesa/drivers/dos/vbeaf.h new file mode 100644 index 0000000000..70ab669b48 --- /dev/null +++ b/src/mesa/drivers/dos/vbeaf.h @@ -0,0 +1,813 @@ +/*
+ * ______ ____ ______ _____ ______
+ * | ____| | _ \| ____| / / _ \| ____|
+ * | |__ _ __ ___ ___| |_) | |__ / / |_| | |__
+ * | __| '__/ _ \/ _ \ _ <| __| / /| _ | __|
+ * | | | | | __/ __/ |_) | |____ / / | | | | |
+ * |_| |_| \___|\___|____/|______/_/ |_| |_|_|
+ *
+ *
+ * VBE/AF structure definitions and constants.
+ *
+ * See freebe.txt for copyright information.
+ */
+
+
+#define FREEBE_VERSION "v1.2"
+
+
+#ifndef ALLEGRO_H
+
+
+#include <pc.h>
+
+
+#define NULL 0
+
+#define TRUE 1
+#define FALSE 0
+
+#define MIN(x,y) (((x) < (y)) ? (x) : (y))
+#define MAX(x,y) (((x) > (y)) ? (x) : (y))
+#define MID(x,y,z) MAX((x), MIN((y), (z)))
+
+#define ABS(x) (((x) >= 0) ? (x) : (-(x)))
+
+#define BYTES_PER_PIXEL(bpp) (((int)(bpp) + 7) / 8)
+
+typedef long fixed;
+
+
+#endif
+
+
+
+/* mode attribute flags */
+#define afHaveMultiBuffer 0x0001 /* multiple buffers */
+#define afHaveVirtualScroll 0x0002 /* virtual scrolling */
+#define afHaveBankedBuffer 0x0004 /* supports banked framebuffer */
+#define afHaveLinearBuffer 0x0008 /* supports linear framebuffer */
+#define afHaveAccel2D 0x0010 /* supports 2D acceleration */
+#define afHaveDualBuffers 0x0020 /* uses dual buffers */
+#define afHaveHWCursor 0x0040 /* supports a hardware cursor */
+#define afHave8BitDAC 0x0080 /* 8 bit palette DAC */
+#define afNonVGAMode 0x0100 /* not a VGA mode */
+#define afHaveDoubleScan 0x0200 /* supports double scanning */
+#define afHaveInterlaced 0x0400 /* supports interlacing */
+#define afHaveTripleBuffer 0x0800 /* supports triple buffering */
+#define afHaveStereo 0x1000 /* supports stereo LCD glasses */
+#define afHaveROP2 0x2000 /* supports ROP2 mix codes */
+#define afHaveHWStereoSync 0x4000 /* hardware stereo signalling */
+#define afHaveEVCStereoSync 0x8000 /* HW stereo sync via EVC connector */
+
+
+
+/* drawing modes */
+typedef enum
+{
+ AF_FORE_MIX = 0, /* background pixels use the foreground mix */
+ AF_REPLACE_MIX = 0, /* solid drawing mode */
+ AF_AND_MIX, /* bitwise AND mode */
+ AF_OR_MIX, /* bitwise OR mode */
+ AF_XOR_MIX, /* bitwise XOR mode */
+ AF_NOP_MIX, /* nothing is drawn */
+
+ /* below here need only be supported if you set the afHaveROP2 flag */
+ AF_R2_BLACK = 0x10,
+ AF_R2_NOTMERGESRC,
+ AF_R2_MASKNOTSRC,
+ AF_R2_NOTCOPYSRC,
+ AF_R2_MASKSRCNOT,
+ AF_R2_NOT,
+ AF_R2_XORSRC,
+ AF_R2_NOTMASKSRC,
+ AF_R2_MASKSRC,
+ AF_R2_NOTXORSRC,
+ AF_R2_NOP,
+ AF_R2_MERGENOTSRC,
+ AF_R2_COPYSRC,
+ AF_R2_MERGESRCNOT,
+ AF_R2_MERGESRC,
+ AF_R2_WHITE,
+} AF_mixModes;
+
+
+
+/* fixed point coordinate pair */
+typedef struct AF_FIX_POINT
+{
+ fixed x;
+ fixed y;
+} AF_FIX_POINT;
+
+
+
+/* trapezium information block */
+typedef struct AF_TRAP
+{
+ unsigned long y;
+ unsigned long count;
+ fixed x1;
+ fixed x2;
+ fixed slope1;
+ fixed slope2;
+} AF_TRAP;
+
+
+
+/* hardware cursor description */
+typedef struct AF_CURSOR
+{
+ unsigned long xorMask[32];
+ unsigned long andMask[32];
+ unsigned long hotx;
+ unsigned long hoty;
+} AF_CURSOR;
+
+
+
+/* color value */
+typedef struct AF_PALETTE
+{
+ unsigned char blue;
+ unsigned char green;
+ unsigned char red;
+ unsigned char alpha;
+} AF_PALETTE;
+
+
+
+/* CRTC information block for refresh rate control */
+typedef struct AF_CRTCInfo
+{
+ unsigned short HorizontalTotal __attribute__ ((packed)); /* horizontal total (pixels) */
+ unsigned short HorizontalSyncStart __attribute__ ((packed)); /* horizontal sync start position */
+ unsigned short HorizontalSyncEnd __attribute__ ((packed)); /* horizontal sync end position */
+ unsigned short VerticalTotal __attribute__ ((packed)); /* vertical total (lines) */
+ unsigned short VerticalSyncStart __attribute__ ((packed)); /* vertical sync start position */
+ unsigned short VerticalSyncEnd __attribute__ ((packed)); /* vertical sync end position */
+ unsigned char Flags __attribute__ ((packed)); /* initialisation flags for mode */
+ unsigned int PixelClock __attribute__ ((packed)); /* pixel clock in units of Hz */
+ unsigned short RefreshRate __attribute__ ((packed)); /* expected refresh rate in .01Hz */
+ unsigned short NumBuffers __attribute__ ((packed)); /* number of display buffers */
+} AF_CRTCInfo;
+
+
+
+/* definitions for CRTC information block flags */
+#define afDoubleScan 0x0001 /* enable double scanned mode */
+#define afInterlaced 0x0002 /* enable interlaced mode */
+#define afHSyncNeg 0x0004 /* horizontal sync is negative */
+#define afVSyncNeg 0x0008 /* vertical sync is negative */
+
+
+
+typedef unsigned char AF_PATTERN; /* pattern array elements */
+typedef unsigned AF_STIPPLE; /* 16 bit line stipple pattern */
+typedef unsigned AF_COLOR; /* packed color values */
+
+
+
+/* mode information structure */
+typedef struct AF_MODE_INFO
+{
+ unsigned short Attributes __attribute__ ((packed));
+ unsigned short XResolution __attribute__ ((packed));
+ unsigned short YResolution __attribute__ ((packed));
+ unsigned short BytesPerScanLine __attribute__ ((packed));
+ unsigned short BitsPerPixel __attribute__ ((packed));
+ unsigned short MaxBuffers __attribute__ ((packed));
+ unsigned char RedMaskSize __attribute__ ((packed));
+ unsigned char RedFieldPosition __attribute__ ((packed));
+ unsigned char GreenMaskSize __attribute__ ((packed));
+ unsigned char GreenFieldPosition __attribute__ ((packed));
+ unsigned char BlueMaskSize __attribute__ ((packed));
+ unsigned char BlueFieldPosition __attribute__ ((packed));
+ unsigned char RsvdMaskSize __attribute__ ((packed));
+ unsigned char RsvdFieldPosition __attribute__ ((packed));
+ unsigned short MaxBytesPerScanLine __attribute__ ((packed));
+ unsigned short MaxScanLineWidth __attribute__ ((packed));
+
+ /* VBE/AF 2.0 extensions */
+ unsigned short LinBytesPerScanLine __attribute__ ((packed));
+ unsigned char BnkMaxBuffers __attribute__ ((packed));
+ unsigned char LinMaxBuffers __attribute__ ((packed));
+ unsigned char LinRedMaskSize __attribute__ ((packed));
+ unsigned char LinRedFieldPosition __attribute__ ((packed));
+ unsigned char LinGreenMaskSize __attribute__ ((packed));
+ unsigned char LinGreenFieldPosition __attribute__ ((packed));
+ unsigned char LinBlueMaskSize __attribute__ ((packed));
+ unsigned char LinBlueFieldPosition __attribute__ ((packed));
+ unsigned char LinRsvdMaskSize __attribute__ ((packed));
+ unsigned char LinRsvdFieldPosition __attribute__ ((packed));
+ unsigned long MaxPixelClock __attribute__ ((packed));
+ unsigned long VideoCapabilities __attribute__ ((packed));
+ unsigned short VideoMinXScale __attribute__ ((packed));
+ unsigned short VideoMinYScale __attribute__ ((packed));
+ unsigned short VideoMaxXScale __attribute__ ((packed));
+ unsigned short VideoMaxYScale __attribute__ ((packed));
+
+ unsigned char reserved[76] __attribute__ ((packed));
+
+} AF_MODE_INFO;
+
+
+
+#define DC struct AF_DRIVER *dc
+
+
+
+/* main VBE/AF driver structure */
+typedef struct AF_DRIVER
+{
+ /* header */
+ char Signature[12] __attribute__ ((packed));
+ unsigned long Version __attribute__ ((packed));
+ unsigned long DriverRev __attribute__ ((packed));
+ char OemVendorName[80] __attribute__ ((packed));
+ char OemCopyright[80] __attribute__ ((packed));
+ short *AvailableModes __attribute__ ((packed));
+ unsigned long TotalMemory __attribute__ ((packed));
+ unsigned long Attributes __attribute__ ((packed));
+ unsigned long BankSize __attribute__ ((packed));
+ unsigned long BankedBasePtr __attribute__ ((packed));
+ unsigned long LinearSize __attribute__ ((packed));
+ unsigned long LinearBasePtr __attribute__ ((packed));
+ unsigned long LinearGranularity __attribute__ ((packed));
+ unsigned short *IOPortsTable __attribute__ ((packed));
+ unsigned long IOMemoryBase[4] __attribute__ ((packed));
+ unsigned long IOMemoryLen[4] __attribute__ ((packed));
+ unsigned long LinearStridePad __attribute__ ((packed));
+ unsigned short PCIVendorID __attribute__ ((packed));
+ unsigned short PCIDeviceID __attribute__ ((packed));
+ unsigned short PCISubSysVendorID __attribute__ ((packed));
+ unsigned short PCISubSysID __attribute__ ((packed));
+ unsigned long Checksum __attribute__ ((packed));
+ unsigned long res2[6] __attribute__ ((packed));
+
+ /* near pointers mapped by the application */
+ void *IOMemMaps[4] __attribute__ ((packed));
+ void *BankedMem __attribute__ ((packed));
+ void *LinearMem __attribute__ ((packed));
+ unsigned long res3[5] __attribute__ ((packed));
+
+ /* driver state variables */
+ unsigned long BufferEndX __attribute__ ((packed));
+ unsigned long BufferEndY __attribute__ ((packed));
+ unsigned long OriginOffset __attribute__ ((packed));
+ unsigned long OffscreenOffset __attribute__ ((packed));
+ unsigned long OffscreenStartY __attribute__ ((packed));
+ unsigned long OffscreenEndY __attribute__ ((packed));
+ unsigned long res4[10] __attribute__ ((packed));
+
+ /* relocatable 32 bit bank switch routine, for Windows (ugh!) */
+ unsigned long SetBank32Len __attribute__ ((packed));
+ void *SetBank32 __attribute__ ((packed));
+
+ /* callback functions provided by the application */
+ void *Int86 __attribute__ ((packed));
+ void *CallRealMode __attribute__ ((packed));
+
+ /* main driver setup routine */
+ void *InitDriver __attribute__ ((packed));
+
+ /* VBE/AF 1.0 asm interface (obsolete and not supported by Allegro) */
+ void *af10Funcs[40] __attribute__ ((packed));
+
+ /* VBE/AF 2.0 extensions */
+ void *PlugAndPlayInit __attribute__ ((packed));
+
+ /* extension query function, specific to FreeBE/AF */
+ void *(*OemExt)(DC, unsigned long id);
+
+ /* extension hook for implementing additional VESA interfaces */
+ void *SupplementalExt __attribute__ ((packed));
+
+ /* device driver functions */
+ long (*GetVideoModeInfo)(DC, short mode, AF_MODE_INFO *modeInfo);
+ long (*SetVideoMode)(DC, short mode, long virtualX, long virtualY, long *bytesPerLine, int numBuffers, AF_CRTCInfo *crtc);
+ void (*RestoreTextMode)(DC);
+ long (*GetClosestPixelClock)(DC, short mode, unsigned long pixelClock);
+ void (*SaveRestoreState)(DC, int subfunc, void *saveBuf);
+ void (*SetDisplayStart)(DC, long x, long y, long waitVRT);
+ void (*SetActiveBuffer)(DC, long index);
+ void (*SetVisibleBuffer)(DC, long index, long waitVRT);
+ int (*GetDisplayStartStatus)(DC);
+ void (*EnableStereoMode)(DC, int enable);
+ void (*SetPaletteData)(DC, AF_PALETTE *pal, long num, long index, long waitVRT);
+ void (*SetGammaCorrectData)(DC, AF_PALETTE *pal, long num, long index);
+ void (*SetBank)(DC, long bank);
+
+ /* hardware cursor functions */
+ void (*SetCursor)(DC, AF_CURSOR *cursor);
+ void (*SetCursorPos)(DC, long x, long y);
+ void (*SetCursorColor)(DC, unsigned char red, unsigned char green, unsigned char blue);
+ void (*ShowCursor)(DC, long visible);
+
+ /* 2D rendering functions */
+ void (*WaitTillIdle)(DC);
+ void (*EnableDirectAccess)(DC);
+ void (*DisableDirectAccess)(DC);
+ void (*SetMix)(DC, long foreMix, long backMix);
+ void (*Set8x8MonoPattern)(DC, unsigned char *pattern);
+ void (*Set8x8ColorPattern)(DC, int index, unsigned long *pattern);
+ void (*Use8x8ColorPattern)(DC, int index);
+ void (*SetLineStipple)(DC, unsigned short stipple);
+ void (*SetLineStippleCount)(DC, unsigned long count);
+ void (*SetClipRect)(DC, long minx, long miny, long maxx, long maxy);
+ void (*DrawScan)(DC, long color, long y, long x1, long x2);
+ void (*DrawPattScan)(DC, long foreColor, long backColor, long y, long x1, long x2);
+ void (*DrawColorPattScan)(DC, long y, long x1, long x2);
+ void (*DrawScanList)(DC, unsigned long color, long y, long length, short *scans);
+ void (*DrawPattScanList)(DC, unsigned long foreColor, unsigned long backColor, long y, long length, short *scans);
+ void (*DrawColorPattScanList)(DC, long y, long length, short *scans);
+ void (*DrawRect)(DC, unsigned long color, long left, long top, long width, long height);
+ void (*DrawPattRect)(DC, unsigned long foreColor, unsigned long backColor, long left, long top, long width, long height);
+ void (*DrawColorPattRect)(DC, long left, long top, long width, long height);
+ void (*DrawLine)(DC, unsigned long color, fixed x1, fixed y1, fixed x2, fixed y2);
+ void (*DrawStippleLine)(DC, unsigned long foreColor, unsigned long backColor, fixed x1, fixed y1, fixed x2, fixed y2);
+ void (*DrawTrap)(DC, unsigned long color, AF_TRAP *trap);
+ void (*DrawTri)(DC, unsigned long color, AF_FIX_POINT *v1, AF_FIX_POINT *v2, AF_FIX_POINT *v3, fixed xOffset, fixed yOffset);
+ void (*DrawQuad)(DC, unsigned long color, AF_FIX_POINT *v1, AF_FIX_POINT *v2, AF_FIX_POINT *v3, AF_FIX_POINT *v4, fixed xOffset, fixed yOffset);
+ void (*PutMonoImage)(DC, long foreColor, long backColor, long dstX, long dstY, long byteWidth, long srcX, long srcY, long width, long height, unsigned char *image);
+ void (*PutMonoImageLin)(DC, long foreColor, long backColor, long dstX, long dstY, long byteWidth, long srcX, long srcY, long width, long height, long imageOfs);
+ void (*PutMonoImageBM)(DC, long foreColor, long backColor, long dstX, long dstY, long byteWidth, long srcX, long srcY, long width, long height, long imagePhysAddr);
+ void (*BitBlt)(DC, long left, long top, long width, long height, long dstLeft, long dstTop, long op);
+ void (*BitBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op);
+ void (*BitBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op);
+ void (*BitBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op);
+ void (*SrcTransBlt)(DC, long left, long top, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);
+ void (*SrcTransBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);
+ void (*SrcTransBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);
+ void (*SrcTransBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);
+ void (*DstTransBlt)(DC, long left, long top, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);
+ void (*DstTransBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);
+ void (*DstTransBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);
+ void (*DstTransBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);
+ void (*StretchBlt)(DC, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op);
+ void (*StretchBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op);
+ void (*StretchBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op);
+ void (*StretchBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op);
+ void (*SrcTransStretchBlt)(DC, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);
+ void (*SrcTransStretchBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);
+ void (*SrcTransStretchBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);
+ void (*SrcTransStretchBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);
+ void (*DstTransStretchBlt)(DC, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);
+ void (*DstTransStretchBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);
+ void (*DstTransStretchBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);
+ void (*DstTransStretchBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);
+
+ /* hardware video functions */
+ void (*SetVideoInput)(DC, long width, long height, long format);
+ void *(*SetVideoOutput)(DC, long left, long top, long width, long height);
+ void (*StartVideoFrame)(DC);
+ void (*EndVideoFrame)(DC);
+
+} AF_DRIVER;
+
+
+
+#undef DC
+
+
+
+/* register data for calling real mode interrupts (DPMI format) */
+typedef union
+{
+ struct {
+ unsigned long edi;
+ unsigned long esi;
+ unsigned long ebp;
+ unsigned long res;
+ unsigned long ebx;
+ unsigned long edx;
+ unsigned long ecx;
+ unsigned long eax;
+ } d;
+ struct {
+ unsigned short di, di_hi;
+ unsigned short si, si_hi;
+ unsigned short bp, bp_hi;
+ unsigned short res, res_hi;
+ unsigned short bx, bx_hi;
+ unsigned short dx, dx_hi;
+ unsigned short cx, cx_hi;
+ unsigned short ax, ax_hi;
+ unsigned short flags;
+ unsigned short es;
+ unsigned short ds;
+ unsigned short fs;
+ unsigned short gs;
+ unsigned short ip;
+ unsigned short cs;
+ unsigned short sp;
+ unsigned short ss;
+ } x;
+ struct {
+ unsigned char edi[4];
+ unsigned char esi[4];
+ unsigned char ebp[4];
+ unsigned char res[4];
+ unsigned char bl, bh, ebx_b2, ebx_b3;
+ unsigned char dl, dh, edx_b2, edx_b3;
+ unsigned char cl, ch, ecx_b2, ecx_b3;
+ unsigned char al, ah, eax_b2, eax_b3;
+ } h;
+} RM_REGS;
+
+
+
+/* our API extensions use 32 bit magic numbers */
+#define FAF_ID(a,b,c,d) ((a<<24) | (b<<16) | (c<<8) | d)
+
+
+
+/* ID code and magic return value for initialising the extensions */
+#define FAFEXT_INIT FAF_ID('I','N','I','T')
+#define FAFEXT_MAGIC FAF_ID('E','X', 0, 0)
+#define FAFEXT_MAGIC1 FAF_ID('E','X','0','1')
+
+
+
+/* extension providing a hardware-specific way to access video memory */
+#define FAFEXT_HWPTR FAF_ID('H','P','T','R')
+
+
+#if (defined __i386__) && (!defined NO_HWPTR)
+
+
+/* use seg+offset far pointers on i386 */
+typedef struct FAF_HWPTR
+{
+ int sel;
+ unsigned long offset;
+} FAF_HWPTR;
+
+#include <sys/farptr.h>
+#include <sys/segments.h>
+
+#define hwptr_init(ptr, addr) \
+ if ((addr) && (!(ptr).sel)) { \
+ (ptr).sel = _my_ds(); \
+ (ptr).offset = (unsigned long)(addr); \
+ }
+
+#define hwptr_pokeb(ptr, off, val) _farpokeb((ptr).sel, (ptr).offset+(off), (val))
+#define hwptr_pokew(ptr, off, val) _farpokew((ptr).sel, (ptr).offset+(off), (val))
+#define hwptr_pokel(ptr, off, val) _farpokel((ptr).sel, (ptr).offset+(off), (val))
+
+#define hwptr_peekb(ptr, off) _farpeekb((ptr).sel, (ptr).offset+(off))
+#define hwptr_peekw(ptr, off) _farpeekw((ptr).sel, (ptr).offset+(off))
+#define hwptr_peekl(ptr, off) _farpeekl((ptr).sel, (ptr).offset+(off))
+
+#define hwptr_select(ptr) _farsetsel((ptr).sel)
+#define hwptr_unselect(ptr) (ptr).sel = _fargetsel()
+
+#define hwptr_nspokeb(ptr, off, val) _farnspokeb((ptr).offset+(off), (val))
+#define hwptr_nspokew(ptr, off, val) _farnspokew((ptr).offset+(off), (val))
+#define hwptr_nspokel(ptr, off, val) _farnspokel((ptr).offset+(off), (val))
+
+#define hwptr_nspeekb(ptr, off) _farnspeekb((ptr).offset+(off))
+#define hwptr_nspeekw(ptr, off) _farnspeekw((ptr).offset+(off))
+#define hwptr_nspeekl(ptr, off) _farnspeekl((ptr).offset+(off))
+
+
+#else
+
+
+/* use regular C pointers on other platforms or if hwptr is disabled */
+typedef void *FAF_HWPTR;
+
+#define hwptr_init(ptr, addr) ptr = (FAF_HWPTR)(addr)
+
+#define hwptr_pokeb(ptr, off, val) *((volatile unsigned char *)((ptr)+(off))) = (val)
+#define hwptr_pokew(ptr, off, val) *((volatile unsigned short *)((ptr)+(off))) = (val)
+#define hwptr_pokel(ptr, off, val) *((volatile unsigned long *)((ptr)+(off))) = (val)
+
+#define hwptr_peekb(ptr, off) (*((volatile unsigned char *)((ptr)+(off))))
+#define hwptr_peekw(ptr, off) (*((volatile unsigned short *)((ptr)+(off))))
+#define hwptr_peekl(ptr, off) (*((volatile unsigned long *)((ptr)+(off))))
+
+#define hwptr_select(ptr)
+#define hwptr_unselect(ptr) (ptr) = NULL
+
+#define hwptr_nspokeb(ptr, off, val) *((volatile unsigned char *)((ptr)+(off))) = (val)
+#define hwptr_nspokew(ptr, off, val) *((volatile unsigned short *)((ptr)+(off))) = (val)
+#define hwptr_nspokel(ptr, off, val) *((volatile unsigned long *)((ptr)+(off))) = (val)
+
+#define hwptr_nspeekb(ptr, off) (*((volatile unsigned char *)((ptr)+(off))))
+#define hwptr_nspeekw(ptr, off) (*((volatile unsigned short *)((ptr)+(off))))
+#define hwptr_nspeekl(ptr, off) (*((volatile unsigned long *)((ptr)+(off))))
+
+
+#endif /* hwptr structure definitions */
+
+
+/* interface structure containing hardware pointer data */
+typedef struct FAF_HWPTR_DATA
+{
+ FAF_HWPTR IOMemMaps[4];
+ FAF_HWPTR BankedMem;
+ FAF_HWPTR LinearMem;
+} FAF_HWPTR_DATA;
+
+
+
+/* extension providing a way for the config program to set driver variables */
+#define FAFEXT_CONFIG FAF_ID('C','O','N','F')
+
+
+
+/* config variable, so the install program can communicate with the driver */
+typedef struct FAF_CONFIG_DATA
+{
+ unsigned long id;
+ unsigned long value;
+} FAF_CONFIG_DATA;
+
+
+
+/* config variable ID used to enable/disable specific hardware functions */
+#define FAF_CFG_FEATURES FAF_ID('F','E','A','T')
+
+
+
+/* bitfield values for the FAF_CFG_FEATURES variable */
+#define fafLinear 0x00000001
+#define fafBanked 0x00000002
+#define fafHWCursor 0x00000004
+#define fafDrawScan 0x00000008
+#define fafDrawPattScan 0x00000010
+#define fafDrawColorPattScan 0x00000020
+#define fafDrawScanList 0x00000040
+#define fafDrawPattScanList 0x00000080
+#define fafDrawColorPattScanList 0x00000100
+#define fafDrawRect 0x00000200
+#define fafDrawPattRect 0x00000400
+#define fafDrawColorPattRect 0x00000800
+#define fafDrawLine 0x00001000
+#define fafDrawStippleLine 0x00002000
+#define fafDrawTrap 0x00004000
+#define fafDrawTri 0x00008000
+#define fafDrawQuad 0x00010000
+#define fafPutMonoImage 0x00020000
+#define fafPutMonoImageLin 0x00040000
+#define fafPutMonoImageBM 0x00080000
+#define fafBitBlt 0x00100000
+#define fafBitBltSys 0x00200000
+#define fafBitBltLin 0x00400000
+#define fafBitBltBM 0x00800000
+#define fafSrcTransBlt 0x01000000
+#define fafSrcTransBltSys 0x02000000
+#define fafSrcTransBltLin 0x04000000
+#define fafSrcTransBltBM 0x08000000
+
+
+
+/* helper function for enabling/disabling driver routines */
+void fixup_feature_list(AF_DRIVER *af, unsigned long flags);
+
+
+
+/* extension providing libc exports (needed for Nucleus compatibility) */
+#define FAFEXT_LIBC FAF_ID('L','I','B','C')
+
+
+typedef struct FAF_LIBC_DATA
+{
+ long size;
+ void (*abort)();
+ void *(*calloc)(unsigned long num_elements, unsigned long size);
+ void (*exit)(int status);
+ void (*free)(void *ptr);
+ char *(*getenv)(const char *name);
+ void *(*malloc)(unsigned long size);
+ void *(*realloc)(void *ptr, unsigned long size);
+ int (*system)(const char *s);
+ int (*putenv)(const char *val);
+ int (*open)(const char *file, int mode, int permissions);
+ int (*access)(const char *filename, int flags);
+ int (*close)(int fd);
+ int (*lseek)(int fd, int offset, int whence);
+ int (*read)(int fd, void *buffer, unsigned long count);
+ int (*unlink)(const char *file);
+ int (*write)(int fd, const void *buffer, unsigned long count);
+ int (*isatty)(int fd);
+ int (*remove)(const char *file);
+ int (*rename)(const char *oldname, const char *newname);
+ unsigned int (*time)(unsigned int *t);
+ void (*setfileattr)(const char *filename, unsigned attrib);
+ unsigned long (*getcurrentdate)();
+} FAF_LIBC_DATA;
+
+
+
+/* extension providing pmode exports (needed for Nucleus compatibility) */
+#define FAFEXT_PMODE FAF_ID('P','M','O','D')
+
+
+
+/* It has to be said, having this many exported functions is truly insane.
+ * How on earth can SciTech need this much crap just to write a simple
+ * video driver? Unfortunately we have to include it all in order to
+ * support their Nucleus drivers...
+ */
+
+typedef union
+{
+ struct {
+ unsigned long eax, ebx, ecx, edx, esi, edi, cflag;
+ } e;
+ struct {
+ unsigned short ax, ax_hi;
+ unsigned short bx, bx_hi;
+ unsigned short cx, cx_hi;
+ unsigned short dx, dx_hi;
+ unsigned short si, si_hi;
+ unsigned short di, di_hi;
+ unsigned short cflag, cflag_hi;
+ } x;
+ struct {
+ unsigned char al, ah; unsigned short ax_hi;
+ unsigned char bl, bh; unsigned short bx_hi;
+ unsigned char cl, ch; unsigned short cx_hi;
+ unsigned char dl, dh; unsigned short dx_hi;
+ } h;
+} SILLY_SCITECH_REGS;
+
+
+
+typedef struct
+{
+ unsigned short es, cs, ss, ds, fs, gs;
+} SILLY_SCITECH_SREGS;
+
+
+
+typedef struct FAF_PMODE_DATA
+{
+ long size;
+ int (*getModeType)();
+ void *(*getBIOSPointer)();
+ void *(*getA0000Pointer)();
+ void *(*mapPhysicalAddr)(unsigned long base, unsigned long limit);
+ void *(*mallocShared)(long size);
+ int (*mapShared)(void *ptr);
+ void (*freeShared)(void *ptr);
+ void *(*mapToProcess)(void *linear, unsigned long limit);
+ void (*loadDS)();
+ void (*saveDS)();
+ void *(*mapRealPointer)(unsigned int r_seg, unsigned int r_off);
+ void *(*allocRealSeg)(unsigned int size, unsigned int *r_seg, unsigned int *r_off);
+ void (*freeRealSeg)(void *mem);
+ void *(*allocLockedMem)(unsigned int size, unsigned long *physAddr);
+ void (*freeLockedMem)(void *p);
+ void (*callRealMode)(unsigned int seg, unsigned int off, SILLY_SCITECH_REGS *regs, SILLY_SCITECH_SREGS *sregs);
+ int (*int86)(int intno, SILLY_SCITECH_REGS *in, SILLY_SCITECH_REGS *out);
+ int (*int86x)(int intno, SILLY_SCITECH_REGS *in, SILLY_SCITECH_REGS *out, SILLY_SCITECH_SREGS *sregs);
+ void (*DPMI_int86)(int intno, RM_REGS *regs);
+ void (*segread)(SILLY_SCITECH_SREGS *sregs);
+ int (*int386)(int intno, SILLY_SCITECH_REGS *in, SILLY_SCITECH_REGS *out);
+ int (*int386x)(int intno, SILLY_SCITECH_REGS *in, SILLY_SCITECH_REGS *out, SILLY_SCITECH_SREGS *sregs);
+ void (*availableMemory)(unsigned long *physical, unsigned long *total);
+ void *(*getVESABuf)(unsigned int *len, unsigned int *rseg, unsigned int *roff);
+ long (*getOSType)();
+ void (*fatalError)(const char *msg);
+ void (*setBankA)(int bank);
+ void (*setBankAB)(int bank);
+ const char *(*getCurrentPath)();
+ const char *(*getVBEAFPath)();
+ const char *(*getNucleusPath)();
+ const char *(*getNucleusConfigPath)();
+ const char *(*getUniqueID)();
+ const char *(*getMachineName)();
+ int (*VF_available)();
+ void *(*VF_init)(unsigned long baseAddr, int bankSize, int codeLen, void *bankFunc);
+ void (*VF_exit)();
+ int (*kbhit)();
+ int (*getch)();
+ int (*openConsole)();
+ int (*getConsoleStateSize)();
+ void (*saveConsoleState)(void *stateBuf, int console_id);
+ void (*restoreConsoleState)(const void *stateBuf, int console_id);
+ void (*closeConsole)(int console_id);
+ void (*setOSCursorLocation)(int x, int y);
+ void (*setOSScreenWidth)(int width, int height);
+ int (*enableWriteCombine)(unsigned long base, unsigned long length);
+ void (*backslash)(char *filename);
+} FAF_PMODE_DATA;
+
+
+
+/* assorted helper functions */
+void trace_putc(char c);
+void trace_printf(char *msg, ...);
+
+void rm_int(int num, RM_REGS *regs);
+
+int allocate_dos_memory(int size, int *sel);
+void free_dos_memory(int sel);
+
+int allocate_selector(int addr, int size);
+void free_selector(int sel);
+
+int get_vesa_info(int *vram_size, unsigned long *linear_addr, void (*callback)(int vesa_num, int linear, int w, int h, int bpp, int bytes_per_scanline, int redsize, int redpos, int greensize, int greenpos, int bluesize, int bluepos, int rsvdsize, int rsvdpos));
+
+
+
+/* read_vga_register:
+ * Reads the contents of a VGA hardware register.
+ */
+extern inline int read_vga_register(int port, int index)
+{
+ if (port==0x3C0)
+ inportb(0x3DA);
+
+ outportb(port, index);
+ return inportb(port+1);
+}
+
+
+
+/* write_vga_register:
+ * Writes a byte to a VGA hardware register.
+ */
+extern inline void write_vga_register(int port, int index, int v)
+{
+ if (port==0x3C0) {
+ inportb(0x3DA);
+ outportb(port, index);
+ outportb(port, v);
+ }
+ else {
+ outportb(port, index);
+ outportb(port+1, v);
+ }
+}
+
+
+
+/* alter_vga_register:
+ * Alters specific bits of a VGA hardware register.
+ */
+extern inline void alter_vga_register(int port, int index, int mask, int v)
+{
+ int temp;
+ temp = read_vga_register(port, index);
+ temp &= (~mask);
+ temp |= (v & mask);
+ write_vga_register(port, index, temp);
+}
+
+
+
+/* test_vga_register:
+ * Tests whether specific bits of a VGA hardware register can be changed.
+ */
+extern inline int test_vga_register(int port, int index, int mask)
+{
+ int old, nw1, nw2;
+
+ old = read_vga_register(port, index);
+ write_vga_register(port, index, old & (~mask));
+ nw1 = read_vga_register(port, index) & mask;
+ write_vga_register(port, index, old | mask);
+ nw2 = read_vga_register(port, index) & mask;
+ write_vga_register(port, index, old);
+
+ return ((nw1==0) && (nw2==mask));
+}
+
+
+
+/* test_register:
+ * Tests whether specific bits of a hardware register can be changed.
+ */
+extern inline int test_register(int port, int mask)
+{
+ int old, nw1, nw2;
+
+ old = inportb(port);
+ outportb(port, old & (~mask));
+ nw1 = inportb(port) & mask;
+ outportb(port, old | mask);
+ nw2 = inportb(port) & mask;
+ outportb(port, old);
+
+ return ((nw1==0) && (nw2==mask));
+}
+
+
+
+/* PCI routines added by SET */
+#define PCIConfigurationAddress 0xCF8
+#define PCIConfigurationData 0xCFC
+#define PCIEnable 0x80000000
+
+extern int FindPCIDevice(int deviceID, int vendorID, int deviceIndex, int *handle);
+
+extern inline unsigned PCIReadLong(int handle, int index)
+{
+ outportl(PCIConfigurationAddress, PCIEnable | handle | index);
+ return inportl(PCIConfigurationData);
+}
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