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/************************************************************************//* *//* QUERY_CX.H *//* *//* Oct 19 1993 (c) 1993, ATI Technologies Incorporated. *//************************************************************************/
/********************** PolyTron RCS Utilities
$Revision: 1.14 $ $Date: 01 May 1996 14:11:26 $ $Author: RWolff $ $Log: S:/source/wnt/ms11/miniport/archive/query_cx.h_v $ * * Rev 1.14 01 May 1996 14:11:26 RWolff * Added prototype for new routine DenseOnAlpha(). * * Rev 1.13 23 Apr 1996 17:24:00 RWolff * Split mapping of memory types reported by BIOS into our enumeration * of memory types according to ASIC type, since ?T and ?X use the same * memory type code to refer to different memory types. * * Rev 1.12 15 Apr 1996 16:58:22 RWolff * Added prototype for routine which identifies which flavour of the * Mach 64 is in use. * * Rev 1.11 20 Mar 1996 13:45:38 RWolff * Increased size of buffer where screen is stored prior to video memory * being used to hold query information. * * Rev 1.10 01 Mar 1996 12:16:02 RWolff * Added definitions used for Alpha "blue screen" preservation. * * Rev 1.9 11 Jan 1996 19:43:32 RWolff * New definitions and structures to support use of AX=A?07 BIOS call rather * than special cases to restrict refresh rates. * * Rev 1.8 24 Feb 1995 12:29:18 RWOLFF * Prototype for TextBanding_cx() * * Rev 1.7 18 Nov 1994 11:54:14 RWOLFF * Split structures and internal variables so that they can be included * separately, as needed for no-BIOS support. * * Rev 1.6 14 Sep 1994 15:20:26 RWOLFF * Added definitions for all 32BPP colour orderings. * * Rev 1.5 31 Aug 1994 16:28:18 RWOLFF * Added support for 1152x864. * * Rev 1.4 30 Jun 1994 18:12:56 RWOLFF * Removed prototype for IsApertureConflict_cx() and definitions used * only by this function. Function moved to SETUP_CX.C because the * new method of checking for conflict requires access to definitions * and data structures which are only available in this module. * * Rev 1.3 12 May 1994 11:21:02 RWOLFF * Updated comment. * * Rev 1.2 27 Apr 1994 14:11:22 RWOLFF * Removed unused lookup table. * * Rev 1.1 07 Feb 1994 14:13:02 RWOLFF * Removed prototype for GetMemoryNeeded_cx(). * * Rev 1.0 31 Jan 1994 11:43:00 RWOLFF * Initial revision. * * Rev 1.2 14 Jan 1994 15:24:32 RWOLFF * Updated CX query structure to match BIOS version 0.13, added 1600x1200 * support, prototype for BlockWriteAvail_cx() * * Rev 1.1 30 Nov 1993 18:27:38 RWOLFF * Prototypes for new routines, fields of cx_query structure now match * fields in structure returned by BIOS query call. * * Rev 1.0 05 Nov 1993 13:36:52 RWOLFF * Initial revision.
End of PolyTron RCS section *****************/
#ifdef DOC
QUERY_CX.H - Header file for QUERY_CX.C
#endif
/*
* Definitions for deep colour and RAMDAC special features support, * stored in q_shadow_1 field (Mach 64 does not use shadow sets) * of query_structure. */#define S1_SYNC_ON_GREEN 0x8000
#define S1_GAMMA_CORRECT 0x4000
#define S1_GREYSCALE_256 0x2000
#define S1_SLEEPMODE 0x1000
#define S1_32BPP 0x00F0
#define S1_32BPP_xRGB 0x0080
#define S1_32BPP_BGRx 0x0040
#define S1_32BPP_RGBx 0x0020
#define S1_32BPP_xBGR 0x0010
#define S1_24BPP 0x000C
#define S1_24BPP_BGR 0x0008
#define S1_24BPP_RGB 0x0004
#define S1_16BPP 0x0003
#define S1_16BPP_555 0x0002
#define S1_16BPP_565 0x0001
/*
* Prototypes for functions provided by QUERY_CX.C */extern int DetectMach64(void);extern VP_STATUS QueryMach64(struct query_structure *Query);extern BOOL BlockWriteAvail_cx(struct query_structure *Query);extern BOOL TextBanding_cx(struct query_structure *Query);extern PWSTR IdentifyMach64Asic(struct query_structure *Query, PULONG AsicStringLength);#if defined(ALPHA)
extern BOOL DenseOnAlpha(struct query_structure *Query);#endif
/*
* Structures used in QUERY_CX.C and (on non-x86 machines with no * emulation, so VideoPortInt10() is not available) modules which * emulate the query functions of the BIOS. */#ifdef STRUCTS_QUERY_CX
/*
* Hardware capability structure returned by BIOS call AX=0xA?07. */#pragma pack(1)
struct cx_hw_cap{ BYTE cx_HorRes; /* Horizontal resolution in units of 8 pixels */ BYTE cx_RamOrDacType; /* RAM type or bitmask of DAC types */ BYTE cx_MemReq; /* Minimum memory to support the mode in question */ BYTE cx_MaxDotClock; /* Maximum dot clock, in megahertz */ BYTE cx_MaxPixDepth; /* Code for maximum pixel depth for the mode in question */};
/*
* Query structure returned by CX BIOS call AX=0xA?09. This structure * is NOT interchangeable with query_structure from AMACH1.H. * * The alignment of fields within the BIOS query and mode table * structures does not match the default structure alignment of the * Windows NT C compiler, so we must force byte alignment. */struct cx_query{ WORD cx_sizeof_struct; /* Size of the structure in bytes */ BYTE cx_structure_rev; /* Structure revision number */ BYTE cx_number_modes; /* Number of mode tables */ WORD cx_mode_offset; /* Offset in bytes to first mode table */ BYTE cx_mode_size; /* Size of each mode table */ BYTE cx_vga_type; /* VGA enabled/disabled status */ WORD cx_asic_rev; /* ASIC revision */ BYTE cx_vga_boundary; /* VGA boundary */ BYTE cx_memory_size; /* Amount of memory installed */ BYTE cx_dac_type; /* DAC type */ BYTE cx_memory_type; /* Type of memory chips installed */ BYTE cx_bus_type; /* Bus type */ BYTE cx_special_sync; /* Flags for composite sync and sync on green */ WORD cx_aperture_addr; /* Aperture address in megabytes (0-4095) */ BYTE cx_aperture_cfg; /* Aperture configuration */ BYTE cx_deep_colour; /* Deep colour support information */ BYTE cx_ramdac_info; /* Special features available from DAC */ BYTE cx_reserved_1; /* Reserved */ WORD cx_current_mode; /* Offset of current mode table */ WORD cx_io_base; /* I/O base address */ BYTE cx_reserved_2[6]; /* Reserved */};
/*
* Mode table structure returned by CX BIOS call AX=0xA?09. This structure * is NOT interchangeable with st_mode_table from AMACH1.H. */struct cx_mode_table{ WORD cx_x_size; /* Horizontal resolution in pixels */ WORD cx_y_size; /* Vertical resolution in pixels */ BYTE cx_pixel_depth; /* Maximum pixel depth */ BYTE cx_reserved_1; /* Reserved */ WORD cx_eeprom_offset; /* Offset of table into EEPROM */ WORD cx_reserved_2; /* Reserved */ WORD cx_reserved_3; /* Reserved */ WORD cx_crtc_gen_cntl; /* Interlace and double scan status */ BYTE cx_crtc_h_total; /* CRTC_H_TOTAL value */ BYTE cx_crtc_h_disp; /* CRTC_H_DISP value */ BYTE cx_crtc_h_sync_strt; /* CRTC_H_SYNC_STRT value */ BYTE cx_crtc_h_sync_wid; /* CRTC_H_SYNC_WID value */ WORD cx_crtc_v_total; /* CRTC_V_TOTAL value */ WORD cx_crtc_v_disp; /* CRTC_V_DISP value */ WORD cx_crtc_v_sync_strt; /* CRTC_V_SYNC_STRT value */ BYTE cx_crtc_v_sync_wid; /* CRTC_V_SYNC_WID value */ BYTE cx_clock_cntl; /* Clock selector and divider */ WORD cx_dot_clock; /* Dot clock for programmable clock chip */ WORD cx_h_overscan; /* Horizontal overscan information */ WORD cx_v_overscan; /* Vertical overscan information */ WORD cx_overscan_8b; /* 8BPP and blue overscan colour */ WORD cx_overscan_gr; /* Green and red overscan colour */};#pragma pack()
#endif /* defined STRUCTS_QUERY_CX */
#ifdef INCLUDE_QUERY_CX
/*
* Private definitions used in QUERY_CX.C */
#define FORMAT_DACMASK 0 /* cx_hw_cap.cx_RamOrDacType is mask of DAC types */
#define FORMAT_RAMMASK 1 /* cx_hw_cap.cx_RamOrDacType is mask of RAM types */
#define FORMAT_DACTYPE 2 /* cx_hw_cap.cx_RamOrDacType is DAC type */
#define FORMAT_RAMTYPE 3 /* cx_hw_cap.cx_RamOrDacType is RAM type */
/*
* The following definitions are used in creating a buffer where the * contents of an existing VGA graphics screen and specific VGA registers * are stored in preparation for using the screen as a buffer below * 1M physical in order to store the BIOS query information. It is * assumed that the temporary buffer used to store this information * is an array of unsigned characters. * * According to Arthur Lai, older BIOSes determined the required size * of the query buffer at runtime by examining the installed modes, * while newer BIOSes take a buffer large enough to handle the worst * case scenario in order to reduce code size. This should never be * larger than 1 kilobyte. In the unlikely event that this is exceeded, * we will save the first kilobyte and allow the remainder to be * overwritten by query data, rather than overflowing our save buffer. */#define VGA_SAVE_SIZE 1024 /* Array location where size of buffer is stored */
#define VGA_SAVE_SIZE_H 1025
#define VGA_SAVE_SEQ02 1026 /* Array location where sequencer register 2 value stored */
#define VGA_SAVE_GRA08 1027 /* Array location where graphics register 8 value stored */
#define VGA_SAVE_GRA01 1028 /* Array location where graphics register 1 value stored */
#define VGA_TOTAL_SIZE 1029 /* Size of screen/register save buffer */
/*
* Pixel depths for use as an array index. Two columns will be wasted * since there is no depth code equal to zero and we don't use 15BPP, * but this allows direct indexing using the pixel width field of the * hardware capabilities structure returned by BIOS call AX=0xA?07. */enum { DEPTH_NOTHING = 0, DEPTH_4BPP, DEPTH_8BPP, DEPTH_15BPP, DEPTH_16BPP, DEPTH_24BPP, DEPTH_32BPP, HOW_MANY_DEPTHS };
/*
* Mappings of Mach 64 query values to enumerations from AMACH1.H */UCHAR CXMapMemSize[8] = { VRAM_512k, VRAM_1mb, VRAM_2mb, VRAM_4mb, VRAM_6mb, VRAM_8mb };
UCHAR CXMapRamType[7] = { VMEM_DRAM_256Kx16, VMEM_VRAM_256Kx4_SER512, VMEM_VRAM_256Kx16_SER256, VMEM_DRAM_256Kx4, VMEM_DRAM_256Kx4_GRAP, /* Space filler - type 4 not documented */ VMEM_VRAM_256Kx4_SPLIT512, VMEM_VRAM_256Kx16_SPLIT256 };
UCHAR CTMapRamType[7] = { VMEM_GENERIC_DRAM, /* Space filler - type 0 not documented */ VMEM_GENERIC_DRAM, VMEM_EDO_DRAM, VMEM_BRRAM, VMEM_SDRAM, VMEM_GENERIC_DRAM, /* Space filler - type 5 not documented */ VMEM_GENERIC_DRAM /* Space filler - type 6 not documented */ };
UCHAR CXMapBus[8] = { BUS_ISA_16, /* ISA bus */ BUS_EISA, BUS_ISA_8, /* Use "weakest" bus for types marked as reserved */ BUS_ISA_8, /* Reserved */ BUS_ISA_8, /* Reserved */ BUS_ISA_8, /* Reserved */ BUS_LB_486, /* Mach 64 lumps all VLB types together */ BUS_PCI };
/*
* Lookup table to translate the code for maximum colour depth returned * in the BIOS mode tables into bits per pixel. */USHORT CXPixelDepth[7] = { 0, /* Undefined */ 4, 8, 16, /* xRRR RRGG GGGB BBBB */ 16, /* RRRR RGGG GGGB BBBB */ 24, 32 };
/*
* Used in searching mode tables for desired resolution. */USHORT CXHorRes[6] = { 640, 800, 1024, 1152, 1280, 1600 };
/*
* Flags to show that a given resolution is supported. */UCHAR CXStatusFlags[6] = { VRES_640x480, VRES_800x600, VRES_1024x768, VRES_1152x864, VRES_1280x1024, VRES_1600x1200 };
#endif /* defined INCLUDE_QUERY_CX */
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