windows-nt-4.0/private/ntos/video/avga/avgadata.h

/*++

Copyright (c) 1992-1993  Microsoft Corporation

Module Name:

    avgadata.h

Abstract:

    This module contains all the global data used by the VGA driver.

Environment:

    Kernel mode

Revision History:


--*/

//
// This structure describes to which ports access is required.
//

#define NUM_VGA_ACCESS_RANGES  3

VIDEO_ACCESS_RANGE VgaAccessRange[] = {
{
    VGA_BASE_IO_PORT, 0x00000000,                // 64-bit linear base address
                                                 // of range
    VGA_START_BREAK_PORT - VGA_BASE_IO_PORT + 1, // # of ports
    1,                                           // range is in I/O space
    1,                                           // range should be visible
    0                                            // range should NOT be shareable
},
{
    VGA_END_BREAK_PORT, 0x00000000,
    VGA_MAX_IO_PORT - VGA_END_BREAK_PORT + 1,
    1,
    1,
    0
},
{
    0x000A0000, 0x00000000,
    0x00020000,
    0,
    1,
    0
}
};


//
// Validator Port list.
// This structure describes all the ports that must be hooked out of the V86
// emulator when a DOS app goes to full-screen mode.
// The structure determines to which routine the data read or written to a
// specific port should be sent.
//

#define VGA_NUM_EMULATOR_ACCESS_ENTRIES     6

EMULATOR_ACCESS_ENTRY VgaEmulatorAccessEntries[] = {

    //
    // Traps for byte OUTs.
    //

    {
        0x000003b0,                   // range start I/O address
        0xC,                         // range length
        Uchar,                        // access size to trap
        EMULATOR_READ_ACCESS | EMULATOR_WRITE_ACCESS, // types of access to trap
        FALSE,                        // does not support string accesses
        (PVOID)VgaValidatorUcharEntry // routine to which to trap
    },

    {
        0x000003c0,                   // range start I/O address
        0x20,                         // range length
        Uchar,                        // access size to trap
        EMULATOR_READ_ACCESS | EMULATOR_WRITE_ACCESS, // types of access to trap
        FALSE,                        // does not support string accesses
        (PVOID)VgaValidatorUcharEntry // routine to which to trap
    },

    //
    // Traps for word OUTs.
    //

    {
        0x000003b0,
        0x06,
        Ushort,
        EMULATOR_READ_ACCESS | EMULATOR_WRITE_ACCESS,
        FALSE,
        (PVOID)VgaValidatorUshortEntry
    },

    {
        0x000003c0,
        0x10,
        Ushort,
        EMULATOR_READ_ACCESS | EMULATOR_WRITE_ACCESS,
        FALSE,
        (PVOID)VgaValidatorUshortEntry
    },

    //
    // Traps for dword OUTs.
    //

    {
        0x000003b0,
        0x03,
        Ulong,
        EMULATOR_READ_ACCESS | EMULATOR_WRITE_ACCESS,
        FALSE,
        (PVOID)VgaValidatorUlongEntry
    },

    {
        0x000003c0,
        0x08,
        Ulong,
        EMULATOR_READ_ACCESS | EMULATOR_WRITE_ACCESS,
        FALSE,
        (PVOID)VgaValidatorUlongEntry
    }

};


//
// Used to trap only the sequncer and the misc output registers
//

#define NUM_MINIMAL_VGA_VALIDATOR_ACCESS_RANGE 4

VIDEO_ACCESS_RANGE MinimalVgaValidatorAccessRange[] = {
{
    VGA_BASE_IO_PORT, 0x00000000,
    VGA_START_BREAK_PORT - VGA_BASE_IO_PORT + 1,
    1,
    1,        // <- enable range IOPM so that it is not trapped.
    1
},
{
    VGA_END_BREAK_PORT, 0x00000000,
    VGA_MAX_IO_PORT - VGA_END_BREAK_PORT + 1,
    1,
    1,
    1
},
{
    VGA_BASE_IO_PORT + MISC_OUTPUT_REG_WRITE_PORT, 0x00000000,
    0x00000001,
    1,
    0,
    1
},
{
    VGA_BASE_IO_PORT + SEQ_ADDRESS_PORT, 0x00000000,
    0x00000002,
    1,
    0,
    1
}
};

//
// Used to trap all registers
//

#define NUM_FULL_VGA_VALIDATOR_ACCESS_RANGE 2

VIDEO_ACCESS_RANGE FullVgaValidatorAccessRange[] = {
{
    VGA_BASE_IO_PORT, 0x00000000,
    VGA_START_BREAK_PORT - VGA_BASE_IO_PORT + 1,
    1,
    0,        // <- disable range in the IOPM so that it is trapped.
    1
},
{
    VGA_END_BREAK_PORT, 0x00000000,
    VGA_MAX_IO_PORT - VGA_END_BREAK_PORT + 1,
    1,
    0,
    1
}
};