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: releng/9.1/sys/arm/xscale/ixp425/ixp425_pci_asm.S 164426 2006-11-19 23:55:23Z sam $
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
52 ENTRY(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
61
62 ENTRY(ixp425_pci_mem_bs_r_2)
63 #ifdef __ARMEB__
64 add r1, r1, r2
65 eor r1, r1, #0x2
66 ldrh r0, [r1]
67 #else
68 ldrh r0, [r1, r2]
69 #endif /* __ARMEB__ */
70 mov pc, lr
71
72 ENTRY(ixp425_pci_mem_bs_r_4)
73 ldr r0, [r1, r2]
74 mov pc, lr
75
76 /*
77 * write single
78 */
79
80 ENTRY(ixp425_pci_mem_bs_w_1)
81 #ifdef __ARMEB__
82 add r1, r1, r2
83 eor r1, r1, #0x3
84 strb r3, [r1]
85 #else
86 strb r3, [r1, r2]
87 #endif /* __ARMEB__ */
88 mov pc, lr
89
90 ENTRY(ixp425_pci_mem_bs_w_2)
91 #ifdef __ARMEB__
92 add r1, r1, r2
93 eor r1, r1, #0x2
94 strh r3, [r1]
95 #else
96 strh r3, [r1, r2]
97 #endif /* __ARMEB__ */
98 mov pc, lr
99
100 ENTRY(ixp425_pci_mem_bs_w_4)
101 str r3, [r1, r2]
102 mov pc, lr
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