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/* $NetBSD: ixp425_pci_asm.S,v 1.2 2005/12/11 12:16:51 christos Exp $ */
/*
* Copyright (c) 2003 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*
* $FreeBSD$
*
*/
#include <machine/asm.h>
/*
* Bus space functions for IXP425 PCI space access. We have to swizzle
* the address for 1 and 2 byte accesses when in big-endian mode.
*/
/*
* read single
*/
ENTRY(ixp425_pci_mem_bs_r_1)
#ifdef __ARMEB__
add r1, r1, r2
eor r1, r1, #0x3
ldrb r0, [r1]
#else
ldrb r0, [r1, r2]
#endif /* __ARMEB__ */
mov pc, lr
ENTRY(ixp425_pci_mem_bs_r_2)
#ifdef __ARMEB__
add r1, r1, r2
eor r1, r1, #0x2
ldrh r0, [r1]
#else
ldrh r0, [r1, r2]
#endif /* __ARMEB__ */
mov pc, lr
ENTRY(ixp425_pci_mem_bs_r_4)
ldr r0, [r1, r2]
mov pc, lr
/*
* write single
*/
ENTRY(ixp425_pci_mem_bs_w_1)
#ifdef __ARMEB__
add r1, r1, r2
eor r1, r1, #0x3
strb r3, [r1]
#else
strb r3, [r1, r2]
#endif /* __ARMEB__ */
mov pc, lr
ENTRY(ixp425_pci_mem_bs_w_2)
#ifdef __ARMEB__
add r1, r1, r2
eor r1, r1, #0x2
strh r3, [r1]
#else
strh r3, [r1, r2]
#endif /* __ARMEB__ */
mov pc, lr
ENTRY(ixp425_pci_mem_bs_w_4)
str r3, [r1, r2]
mov pc, lr
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