102 lines
3.8 KiB
C
102 lines
3.8 KiB
C
//---------------------------------------------------------------------------
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//
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// file: CLIOCTL.H
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//
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// (c) Copyright 1993, Cirrus Logic, Inc.
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// Copyright (c) 1996-1997 Microsoft Corporation
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// Copyright (c) 1996-1997 Cirrus Logic, Inc.,
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// All rights reserved.
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//
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// date: 1 July 1993
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//---------------------------------------------------------------------------
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// The maximum GDI ESCAPE value defined in WINGDI.H is 4110(decimal). So here
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// we pick an arbitrary value of...
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//
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// chu01 : 12-16-96 Enable color correction
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// myf17 : 10-29-96 supported special Escape call
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// myf28 : 01-23-96 supported 755x gamma correction
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// jl01 : 02-24-97 Implement Feature Connector's functions
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//---------------------------------------------------------------------------
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//
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// The following macro(CTL_CODE) is defined in WINIOCTL.H. That file states
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// that functions 2048-4095 are reserved for "customers". So I picked an
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// arbitrary value of 0x900=2304.
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//
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#define IOCTL_CIRRUS_GET_CAPABILITIES \
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CTL_CODE(FILE_DEVICE_VIDEO, 0x901, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_CIRRUS_SET_DISPLAY_PITCH \
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CTL_CODE(FILE_DEVICE_VIDEO, 0x902, METHOD_BUFFERED, FILE_ANY_ACCESS)
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//
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// chu01 : GAMMACORRECT
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//
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#define IOCTL_CIRRUS_GET_GAMMA_FACTOR \
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CTL_CODE(FILE_DEVICE_VIDEO, 0x908, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_CIRRUS_GET_CONTRAST_FACTOR \
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CTL_CODE(FILE_DEVICE_VIDEO, 0x909, METHOD_BUFFERED, FILE_ANY_ACCESS)
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//myf28
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#define IOCTL_CIRRUS_GET_755x_GAMMA_FACTOR \
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CTL_CODE(FILE_DEVICE_VIDEO, 0x90A, METHOD_BUFFERED, FILE_ANY_ACCESS)
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//---------------------------------------------------------------------------
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// Structure for miniport to indicate to display driver the capabilities
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// of the chip. The flag currently indicates HW Cursor and BLT Engine
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// support.
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//
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// Also included is the size of memory, and the top of available offscreen
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// memory. (Actually it's top+1).
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//
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typedef struct {
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ULONG size; // size of this structure
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ULONG fl; // see bit description below
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ULONG ulChipId; // Chip ID read from CR27[7:2] - e.g CL5434 = 0x2A
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ULONG ulMemSize; // Size of memory in bytes=end of HW cursor buffers
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ULONG ulOffscreenMemTop; // Offset of 1st byte of unusable video memory
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// [1st byte of cursor buffers on all but 754x]
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// [1st byte of split screen buffer on 754x]
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} CIRRUS_CAPABILITIES, *PCIRRUS_CAPABILITIES;
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//#define CL_ALLOW_HW_CURSOR 0x01 // Flag to enable HW Cursor in
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//capabilities
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//#define CL_BLT_SUPPORT 0x02 // Flag set if chip has BLT Engine
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//support
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//#define CL_ALLOW_OPAQUE_TEXT 0x04 // Flag to enable HW Cursor in
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//capabilities
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//#define CL_LINEAR_MODE 0x08 // Flag set if addressing mode is linear
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//#define CL_CURSOR_VERT_EXP 0x10 // Flag set if 8x6 panel, 6x4 resolution
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//#define CL_DSTN_PANEL 0x20 // Flag set if DSTN panel connect
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//---------------------------------------------------------------------------
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//
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// this is the structure used to pass arguments to the CIRRUS_PRIVATE_ESCAPE
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// call done in DrvEscape(). The size of this struct limits the size of the
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// returned arguments also. See the DrvEscape() function in enable.c (in the
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// display driver DLL) for more information.
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//
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// NOTE: to enable the definition of these parameters, the following sequence
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// is recommended!
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//
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// #define ENABLE_BIOS_ARGUMENTS // put this before the include
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// #include "clioctl.h"
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#ifdef ENABLE_BIOS_ARGUMENTS
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typedef struct _VIDEO_X86_BIOS_ARGUMENTS {
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ULONG Eax;
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ULONG Ebx;
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ULONG Ecx;
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ULONG Edx;
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ULONG Esi;
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ULONG Edi;
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ULONG Ebp;
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} VIDEO_X86_BIOS_ARGUMENTS, *PVIDEO_X86_BIOS_ARGUMENTS;
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#endif
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//---------------------------------------------------------------------------
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