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/*-
* Copyright (c) 2013 Ian Lepore <ian@freebsd.org>
* 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 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_DEVMAP_H_
#define _MACHINE_DEVMAP_H_
/*
* Routines to translate between virtual and physical addresses within a region
* that is static-mapped by the devmap code. If the given address range isn't
* static-mapped, then ptov returns NULL and vtop returns DEVMAP_PADDR_NOTFOUND.
* The latter implies that you can't vtop just the last byte of physical address
* space. This is not as limiting as it might sound, because even if a device
* occupies the end of the physical address space, you're only prevented from
* doing vtop for that single byte. If you vtop a size bigger than 1 it works.
*/
#define DEVMAP_PADDR_NOTFOUND ((vm_paddr_t)(-1))
void * arm_devmap_ptov(vm_paddr_t _pa, vm_size_t _sz);
vm_paddr_t arm_devmap_vtop(void * _va, vm_size_t _sz);
#endif
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