FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/vgareg.h

     /* $NetBSD: vgareg.h,v 1.9 2005/12/11 12:21:29 christos Exp $ */
     
     /*
      * Copyright (c) 1998
      *      Matthias Drochner.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     */
    
    struct reg_vgaattr { /* indexed via port 0x3c0 */
            u_int8_t palette[16];
            u_int8_t mode, overscan, colplen, horpixpan;
            u_int8_t colreset, misc;
    };
    #define VGA_ATC_NREGS   21
    #define VGA_ATC_INDEX   0x0
    #define VGA_ATC_DATAW   0x0
    #define VGA_ATC_DATAR   0x1
    #define VGA_ATC_OVERSCAN        0x11
    
    struct reg_vgats { /* indexed via port 0x3c4 */
            u_int8_t syncreset, mode, wrplmask, fontsel, memmode;
    };
    #define VGA_TS_MODE_BLANK       0x20
    
    #define VGA_TS_NREGS    5
    #define VGA_TS_INDEX    0x4
    #define VGA_TS_DATA     0x5
    
    struct reg_vgagdc { /* indexed via port 0x3ce */
            u_int8_t setres, ensetres, colorcomp, rotfunc;
            u_int8_t rdplanesel, mode, misc, colorcare;
            u_int8_t bitmask;
    };
    #define VGA_GDC_NREGS   9
    #define VGA_GDC_INDEX   0xe
    #define VGA_GDC_DATA    0xf
    
    /*
     * CRTC registers are defined in sys/dev/ic/mc6845reg.h
     */
    
    /* video DAC palette registers */
    #define VGA_DAC_PELMASK 0x6
    #define VGA_DAC_STATE   0x7
    #define VGA_DAC_ADDRR   0x7
    #define VGA_DAC_ADDRW   0x8
    #define VGA_DAC_PALETTE 0x9
    
    /* misc output register */
    #define VGA_MISC_DATAR  0xc
    #define VGA_MISC_DATAW  0x2

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