/* $NetBSD: bus_private.h,v 1.10 2019/02/14 06:59:24 cherry Exp $ */

/* $NetBSD: bus_private.h,v 1.10 2019/02/14 06:59:24 cherry Exp $ */

/*-
* Copyright (c)2005 YAMAMOTO Takashi,
* 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.
*/

#include <uvm/uvm_extern.h>
#include "opt_xen.h"

#ifdef XENPV
#define _BUS_PHYS_TO_BUS(pa) ((bus_addr_t)xpmap_ptom(pa))
#define _BUS_BUS_TO_PHYS(ba) ((paddr_t)xpmap_mtop(ba))
#define _BUS_VIRT_TO_BUS(pm, va) _bus_virt_to_bus((pm), (va))
#define _BUS_BUS_TO_VM_PAGE(ba) (PHYS_TO_VM_PAGE(xpmap_mtop(ba)))
#define _BUS_PMAP_ENTER(pmap, va, ba, prot, flags) \
pmap_enter(pmap, va, xpmap_mtop(ba), prot, flags)

static __inline bus_addr_t _bus_virt_to_bus(struct pmap *, vaddr_t);

static __inline bus_addr_t
_bus_virt_to_bus(struct pmap *pm, vaddr_t va)
{
bus_addr_t ba;

if (!pmap_extract_ma(pm, va, &ba)) {
panic("_bus_virt_to_bus");
}

return ba;
}

/* we need our own bus_dmamem_alloc_range */
#define _BUS_DMAMEM_ALLOC_RANGE _xen_bus_dmamem_alloc_range
int _xen_bus_dmamem_alloc_range(bus_dma_tag_t, bus_size_t, bus_size_t,
bus_size_t, bus_dma_segment_t *, int, int *, int,
bus_addr_t, bus_addr_t);

/*
* The higher machine address of our allocated range isn't know and can change
* over time. Just assume it's the largest possible value.
*/
#if defined(_LP64) || defined(PAE)
#define _BUS_AVAIL_END ((bus_addr_t)0xffffffffffffffff)
#else
#define _BUS_AVAIL_END ((bus_addr_t)0xffffffff)
#endif
#endif /* XENPV */
#include <x86/bus_private.h>