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