/*      $NetBSD: pfourreg.h,v 1.5 2026/05/25 13:47:08 christos 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 
 * The PROM gives us the offset for the pfour registers
 * which are at 0x300000 in the pfour address space
 * these offsets are reletive to that
 */
#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    (-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