1/*	$NetBSD: ixp425_pci_asm.S,v 1.2 2005/12/11 12:16:51 christos Exp $	*/
2
3/*
4 * Copyright (c) 2003 Wasabi Systems, Inc.
5 * All rights reserved.
6 *
7 * Written by Jason R. Thorpe for Wasabi Systems, Inc.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 *    must display the following acknowledgement:
19 *	This product includes software developed for the NetBSD Project by
20 *	Wasabi Systems, Inc.
21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
22 *    or promote products derived from this software without specific prior
23 *    written permission.
24 *
25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 *
37 * $FreeBSD$
38 *
39 */
40
41#include <machine/asm.h>
42
43/*
44 * Bus space functions for IXP425 PCI space access.  We have to swizzle
45 * the address for 1 and 2 byte accesses when in big-endian mode.
46 */
47
48/*
49 * read single
50 */
51
52ENTRY(ixp425_pci_mem_bs_r_1)
53#ifdef __ARMEB__
54	add	r1, r1, r2
55	eor	r1, r1, #0x3
56	ldrb	r0, [r1]
57#else
58	ldrb	r0, [r1, r2]
59#endif /* __ARMEB__ */
60	mov	pc, lr
61END(ixp425_pci_mem_bs_r_1)
62
63ENTRY(ixp425_pci_mem_bs_r_2)
64#ifdef __ARMEB__
65	add	r1, r1, r2
66	eor	r1, r1, #0x2
67	ldrh	r0, [r1]
68#else
69	ldrh	r0, [r1, r2]
70#endif /* __ARMEB__ */
71	mov	pc, lr
72END(ixp425_pci_mem_bs_r_2)
73
74ENTRY(ixp425_pci_mem_bs_r_4)
75	ldr	r0, [r1, r2]
76	mov	pc, lr
77END(ixp425_pci_mem_bs_r_4)
78
79/*
80 * write single
81 */
82
83ENTRY(ixp425_pci_mem_bs_w_1)
84#ifdef __ARMEB__
85	add	r1, r1, r2
86	eor	r1, r1, #0x3
87	strb	r3, [r1]
88#else
89	strb	r3, [r1, r2]
90#endif /* __ARMEB__ */
91	mov	pc, lr
92END(ixp425_pci_mem_bs_w_1)
93
94ENTRY(ixp425_pci_mem_bs_w_2)
95#ifdef __ARMEB__
96	add	r1, r1, r2
97	eor	r1, r1, #0x2
98	strh	r3, [r1]
99#else
100	strh	r3, [r1, r2]
101#endif /* __ARMEB__ */
102	mov	pc, lr
103END(ixp425_pci_mem_bs_w_2)
104
105ENTRY(ixp425_pci_mem_bs_w_4)
106	str	r3, [r1, r2]
107	mov	pc, lr
108END(ixp425_pci_mem_bs_w_4)
109