/* $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