/*      $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 */
}