/*      $NetBSD: bus_space.c,v 1.2 2019/12/15 16:48:26 tsutsui Exp $    */

/*-
 * Copyright (c) 1996, 1997, 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace
 * Simulation Facility, NASA Ames Research Center.
 *
 * 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(0, "$NetBSD: bus_space.c,v 1.2 2019/12/15 16:48:26 tsutsui Exp $");

#include <sys/param.h>
#include <sys/systm.h>

#include <machine/bus.h>


int
ia64_bus_space_map(bus_space_tag_t t, bus_addr_t addr,
    bus_size_t size, int flags, bus_space_handle_t *bshp)
{
        if (t == IA64_BUS_SPACE_IO) {
                if (addr > 0xffff)
                        return 1;
                *bshp = addr;
        } else {
                /* t == IA64_BUS_SPACE_MEM */

                if (flags & BUS_SPACE_MAP_CACHEABLE)
                        *bshp = addr + IA64_RR_BASE(7);
                else
                        *bshp = addr + IA64_RR_BASE(6);
        }

        return 0;
}

void
ia64_bus_space_unmap(bus_space_tag_t t, bus_space_handle_t bsh,
    bus_size_t size)
{
        /* nop */
}

int
ia64_bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
    bus_size_t offset, bus_size_t size, bus_space_handle_t *bshp)
{
        *bshp = bsh + offset;
        return 0;
}

paddr_t
ia64_bus_space_mmap(bus_space_tag_t t, bus_addr_t addr, off_t offset,
    int prot, int flags)
{
        /* Can't mmap I/O space */
        if (t == IA64_BUS_SPACE_IO)
                return -1;

        return addr + offset;
}

int
ia64_bus_space_alloc(bus_space_tag_t t, bus_addr_t reg_start,
    bus_addr_t reg_end, bus_size_t size, bus_size_t alignment,
    bus_size_t boundary, int flags, bus_addr_t *addrp, bus_space_handle_t *bshp)
{
        bus_addr_t addr;

        addr = (reg_start + PAGE_SIZE - 1) & ~PAGE_MASK;

        if ((addr % alignment) == 0) {
                *addrp = addr;
                *bshp = (bus_space_handle_t)addr;
                return 0;
        } else {
                return 1;
        }
}

void
ia64_bus_space_free(bus_space_tag_t t, bus_space_handle_t handle,
    bus_size_t size)
{
        /* nop */
}