/*      $NetBSD: pfourreg.h,v 1.4 2008/04/28 20:23:58 martin Exp $      */

/*-
* Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe.
*
* 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/

/*
* Copyright (c) 1995 Theo de Raadt
* 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.
*/

/*
* pfour framebuffer registers.
*/

/* Offset of bwtwo framebuffer from pfour register */
#define PFOUR_BW_OFF            0x00100000

/* Offsets for color framebuffers */
#define PFOUR_COLOR_OFF_OVERLAY 0x00100000
#define PFOUR_COLOR_OFF_ENABLE  0x00300000
#define PFOUR_COLOR_OFF_COLOR   0x00500000
#define PFOUR_COLOR_OFF_END     0x00700000
#define PFOUR_COLOR_OFF_CMAP    0xfff00000      /* (-0x00100000) */

#define PFOUR_REG_DIAG          0x80
#define PFOUR_REG_READBACKCLR   0x40
#define PFOUR_REG_VIDEO         0x20
#define PFOUR_REG_SYNC          0x10
#define PFOUR_REG_VTRACE        0x08
#define PFOUR_REG_INT           0x04
#define PFOUR_REG_INTCLR        0x04
#define PFOUR_REG_INTEN         0x02
#define PFOUR_REG_FIRSTHALF     0x01
#define PFOUR_REG_RESET         0x01

#define PFOUR_FBTYPE_MASK       0x7f000000
#define PFOUR_FBTYPE(x)         ((x) >> 24)

#define PFOUR_ID_MASK           0xf0
#define PFOUR_ID(x)             (PFOUR_FBTYPE((x)) == PFOUR_ID_COLOR24 ? \
                                   PFOUR_ID_COLOR24 : \
                                   PFOUR_FBTYPE((x)) & PFOUR_ID_MASK)
#define PFOUR_ID_BW             0x00    /* monochrome */
#define PFOUR_ID_FASTCOLOR      0x60    /* accelerated 8-bit color */
#define PFOUR_ID_COLOR8P1       0x40    /* 8-bit color + overlay */
#define PFOUR_ID_COLOR24        0x45    /* 24-bit color + overlay */

#define PFOUR_SIZE_MASK         0x0f
#define PFOUR_SIZE(x)           (PFOUR_FBTYPE((x)) & PFOUR_SIZE_MASK)
#define PFOUR_SIZE_1152X900     0x01
#define PFOUR_SIZE_1024X1024    0x02
#define PFOUR_SIZE_1280X1024    0x03
#define PFOUR_SIZE_1600X1280    0x00
#define PFOUR_SIZE_1440X1440    0x04
#define PFOUR_SIZE_640X480      0x05

#define PFOUR_NOTPFOUR          -1

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