/* $NetBSD: amiga_bus_simple_4.c,v 1.10 2011/10/30 08:33:43 rkujawa Exp $ */

/*-
 * Copyright (c) 1999 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Ignatios Souvatzis.
 *
 * 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(1, "$NetBSD: amiga_bus_simple_4.c,v 1.10 2011/10/30 08:33:43 rkujawa Exp $");

#define AMIGA_SIMPLE_BUS_STRIDE 4               /* 1 byte per long */
#define AMIGA_SIMPLE_BUS_WORD_METHODS
#define AMIGA_SIMPLE_BUS_LONGWORD_METHODS

#include "simple_busfuncs.c"

/*
 * Little-endian word methods.
 * Stream access does not swap, used for 16-bit and 32-bit wide transfers 
 * of byte streams. Non-stream access swaps bytes.
 * XXX Only *_multi_2 and *_multi_4 transfers currently swap bytes XXX
 */

bsrm(oabs(bsrm2_swap_), u_int16_t);
bswm(oabs(bswm2_swap_), u_int16_t);
bsrm(oabs(bsrm4_swap_), u_int32_t);
bswm(oabs(bswm4_swap_), u_int32_t);

void
oabs(bsrm2_swap_)(bus_space_handle_t handle, bus_size_t offset,
                  u_int16_t *pointer, bus_size_t count)
{
        volatile u_int16_t *p;

        p = (volatile u_int16_t *)(handle + offset * AMIGA_SIMPLE_BUS_STRIDE);

        while (count > 0) {
                *pointer++ = bswap16(*p);
                amiga_bus_reorder_protect();
                --count;
        }
}

void
oabs(bswm2_swap_)(bus_space_handle_t handle, bus_size_t offset,
                  const u_int16_t *pointer, bus_size_t count)
{
        volatile u_int16_t *p;

        p = (volatile u_int16_t *)(handle + offset * AMIGA_SIMPLE_BUS_STRIDE);

        while (count > 0) {
                *p = bswap16(*pointer);
                amiga_bus_reorder_protect();
                ++pointer;
                --count;
        }
}

void
oabs(bsrm4_swap_)(bus_space_handle_t handle, bus_size_t offset,
                  u_int32_t *pointer, bus_size_t count)
{
        volatile u_int32_t *p;

        p = (volatile u_int32_t *)(handle + offset * AMIGA_SIMPLE_BUS_STRIDE);

        while (count > 0) {
                *pointer++ = bswap32(*p);
                amiga_bus_reorder_protect();
                --count;
        }
}

void
oabs(bswm4_swap_)(bus_space_handle_t handle, bus_size_t offset,
                  const u_int32_t *pointer, bus_size_t count)
{
        volatile u_int32_t *p;

        p = (volatile u_int32_t *)(handle + offset * AMIGA_SIMPLE_BUS_STRIDE);

        while (count > 0) {
                *p = bswap32(*pointer);
                amiga_bus_reorder_protect();
                ++pointer;
                --count;
        }
}

const struct amiga_bus_space_methods amiga_bus_stride_4swap = {

        .bsm =          oabs(bsm_),
        .bsms =         oabs(bsms_),
        .bsu =          oabs(bsu_),
        .bsa =          NULL,
        .bsf =          NULL,

        .bsr1 =         oabs(bsr1_),
        .bsw1 =         oabs(bsw1_),
        .bsrm1 =        oabs(bsrm1_),
        .bswm1 =        oabs(bswm1_),
        .bsrr1 =        oabs(bsrr1_),
        .bswr1 =        oabs(bswr1_),
        .bssr1 =        oabs(bssr1_),
        .bscr1 =        oabs(bscr1_),

        .bsr2 =         oabs(bsr2_),            /* XXX swap? */
        .bsw2 =         oabs(bsw2_),            /* XXX swap? */
        .bsrs2 =        oabs(bsr2_),
        .bsws2 =        oabs(bsw2_),
        .bsrm2 =        oabs(bsrm2_swap_),
        .bswm2 =        oabs(bswm2_swap_),
        .bsrms2 =       oabs(bsrm2_),
        .bswms2 =       oabs(bswm2_),
        .bsrr2 =        oabs(bsrr2_),           /* XXX swap? */
        .bswr2 =        oabs(bswr2_),           /* XXX swap? */
        .bsrrs2 =       oabs(bsrr2_),
        .bswrs2 =       oabs(bswr2_),
        .bssr2 =        oabs(bssr2_),           /* XXX swap? */
        .bscr2 =        oabs(bscr2_),           /* XXX swap? */

        .bsr4 =         oabs(bsr4_),            /* XXX swap? */
        .bsw4 =         oabs(bsw4_),            /* XXX swap? */
        .bsrs4 =        oabs(bsr4_),
        .bsws4 =        oabs(bsw4_),
        .bsrm4 =        oabs(bsrm4_swap_),
        .bswm4 =        oabs(bswm4_swap_),
        .bsrms4 =       oabs(bsrm4_),
        .bswms4 =       oabs(bswm4_),
        .bsrr4 =        oabs(bsrr4_),           /* XXX swap? */
        .bswr4 =        oabs(bswr4_),           /* XXX swap? */
        .bsrrs4 =       oabs(bsrr4_),
        .bswrs4 =       oabs(bswr4_),
        .bssr4 =        oabs(bssr4_),           /* XXX swap? */
        .bscr4 =        oabs(bscr4_)            /* XXX swap? */
};