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/************************************************************************//* *//* SERVICES.H *//* *//* Aug 26 1993 (c) 1993, ATI Technologies Incorporated. *//************************************************************************/
/********************** PolyTron RCS Utilities
$Revision: 1.9 $ $Date: 02 Feb 1996 17:22:20 $ $Author: RWolff $ $Log: S:/source/wnt/ms11/miniport/archive/services.h_v $ * * Rev 1.9 02 Feb 1996 17:22:20 RWolff * Added prototype for new routine GetVgaBuffer(). * * Rev 1.8 11 Jan 1996 19:45:02 RWolff * SetFixedModes() now restricts modes based on pixel clock frequency. * * Rev 1.7 20 Jul 1995 18:01:16 mgrubac * Added support for VDIF files. * * Rev 1.6 02 Jun 1995 14:34:06 RWOLFF * Added prototype for UpperCase(). * * Rev 1.5 23 Dec 1994 10:48:14 ASHANMUG * ALPHA/Chrontel-DAC * * Rev 1.4 19 Aug 1994 17:14:34 RWOLFF * Added support for non-standard pixel clock generators. * * Rev 1.3 20 Jul 1994 13:01:36 RWOLFF * Added prototype for new routine FillInRegistry(). * * Rev 1.2 12 May 1994 11:05:06 RWOLFF * Prototype and definitions for new function SetFixedModes() * * Rev 1.1 26 Apr 1994 12:35:44 RWOLFF * Added prototype for ISAPitchAdjust() * * Rev 1.0 31 Jan 1994 11:49:22 RWOLFF * Initial revision. * * Rev 1.3 24 Jan 1994 18:10:24 RWOLFF * Added prototype for new routine TripleClock(). * * Rev 1.2 15 Dec 1993 15:32:16 RWOLFF * Added prototype for new clock multiplier routine. * * Rev 1.1 05 Nov 1993 13:27:50 RWOLFF * Headers for new routines in SERVICES.C, added array of pixel clock * frequencies (initialized for 18811-1 clock chip, may be changed by other * routines for other clock chips). * * Rev 1.0 03 Sep 1993 14:29:06 RWOLFF * Initial revision.
End of PolyTron RCS section *****************/
#ifdef DOC
SERVICES.H - Header file for SERVICES.C
#endif
/*
* Global definitions used in detecting card capabilities. */#define VIDEO_ROM_ID 0x0AA55 /* Found at start of any BIOS block */
/*
* Permitted values for clock multiplication at high pixel depths. */enum { CLOCK_SINGLE = 1, CLOCK_THREE_HALVES, CLOCK_DOUBLE, CLOCK_TRIPLE };
/*
* Prototypes for functions supplied by SERVICES.C */extern void short_delay (void);extern void delay(int);extern BOOL IsBufferBacked(PUCHAR StartAddress, ULONG Size);extern UCHAR DoubleClock(UCHAR ClockSelector);extern UCHAR ThreeHalvesClock(UCHAR ClockSelector);extern UCHAR TripleClock(UCHAR ClockSelector);extern ULONG GetFrequency(UCHAR ClockSelector);extern UCHAR GetSelector(ULONG *Frequency);extern UCHAR GetShiftedSelector(ULONG Frequency);extern void ISAPitchAdjust(struct query_structure *QueryPtr);extern WORD SetFixedModes(WORD StartIndex, WORD EndIndex, WORD Multiplier, WORD PixelDepth, WORD Pitch, short FreeTables, ULONG MaxDotClock, struct st_mode_table **ppmode);extern void FillInRegistry(struct query_structure *QueryPtr);
extern PVOID MapFramebuffer(ULONG StartAddress, long Size);
extern unsigned short *Get_BIOS_Seg(void);extern void UpperCase(PUCHAR TxtString);extern PUCHAR GetVgaBuffer(ULONG Size, ULONG Offset, PULONG Segment, PUCHAR SaveBuffer);
extern UCHAR LioInp(int Port, int Offset);extern USHORT LioInpw(int Port, int Offset);extern ULONG LioInpd(int Port);extern VOID LioOutp(int Port, UCHAR Data, int Offset);extern VOID LioOutpw(int Port, USHORT Data, int Offset);extern VOID LioOutpd(int Port, ULONG Data);
#ifdef INCLUDE_SERVICES
/*
* Definitions and variables used in SERVICES.C */
/*
* The following definitions are used in finding the video BIOS segment. */#define ISA_ROM_BASE 0xC0000 /* Lowest address where BIOS can be found */
#define ROM_LOOK_SIZE 0x40000 /* Size of block where BIOS can be found */
#define ROM_GRANULARITY 0x00800 /* BIOS starts on a 2k boundary */
/*
* Offset from ISA_ROM_BASE of highest possible start of video BIOS segment */#define MAX_BIOS_START ROM_LOOK_SIZE - ROM_GRANULARITY
/*
* The ATI signature string will start at an offset into the video BIOS * segment no less than SIG_AREA_START and no greater than SIG_AREA_END. */#define SIG_AREA_START 0x30
#define SIG_AREA_END 0x80
/*
* ROM block containing ATI Graphics product signature, * extended base address, and ASIC chip revision */VIDEO_ACCESS_RANGE RawRomBaseRange = { ISA_ROM_BASE, 0, ROM_LOOK_SIZE, FALSE, FALSE, FALSE };
/*
* Clock selector and divisor as used by DoubleClock(). These do not * match the divisor ans selector masks in the CLOCK_SEL register. */#define SELECTOR_MASK 0x0F
#define DIVISOR_MASK 0x10
#define DIVISOR_SHIFT 4 /* Bits to shift divisor before ORing with selector */
/*
* Frequencies (in hertz) produced by the clock generator for * each select value. External clock values should be set to 0 * (won't match anything). */ULONG ClockGenerator[16] ={ 100000000L, 126000000L, 92400000L, 36000000L, 50350000L, 56640000L, 0L, 44900000L, 135000000L, 32000000L, 110000000L, 80000000L, 39910000L, 44900000L, 75000000L, 65000000L};
/*
* Frequency tolerance (in hertz) used by GetSelector(). * Any selector/divisor pair which produces a frequency * within FREQ_TOLERANCE of the input is considered a match. */#define FREQ_TOLERANCE 100000L
#else /* Not defined INCLUDE_SERVICES */
extern ULONG ClockGenerator[16];
#endif /* defined INCLUDE_SERVICES */
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