Commit | Line | Data |
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787a22d1 CZ |
1 | /* |
2 | * arch/xtensa/io.c | |
3 | * | |
4 | * IO primitives | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | * | |
11 | * Copied from sparc. | |
12 | * | |
13 | * Chris Zankel <chris@zankel.net> | |
14 | * | |
15 | */ | |
16 | ||
17 | #include <asm/io.h> | |
18 | #include <asm/byteorder.h> | |
19 | ||
20 | void outsb(unsigned long addr, const void *src, unsigned long count) { | |
21 | while (count) { | |
22 | count -= 1; | |
23 | writeb(*(const char *)src, addr); | |
24 | src += 1; | |
25 | addr += 1; | |
26 | } | |
27 | } | |
28 | ||
29 | void outsw(unsigned long addr, const void *src, unsigned long count) { | |
30 | while (count) { | |
31 | count -= 2; | |
32 | writew(*(const short *)src, addr); | |
33 | src += 2; | |
34 | addr += 2; | |
35 | } | |
36 | } | |
37 | ||
38 | void outsl(unsigned long addr, const void *src, unsigned long count) { | |
39 | while (count) { | |
40 | count -= 4; | |
41 | writel(*(const long *)src, addr); | |
42 | src += 4; | |
43 | addr += 4; | |
44 | } | |
45 | } | |
46 | ||
47 | void insb(unsigned long addr, void *dst, unsigned long count) { | |
48 | while (count) { | |
49 | count -= 1; | |
50 | *(unsigned char *)dst = readb(addr); | |
51 | dst += 1; | |
52 | addr += 1; | |
53 | } | |
54 | } | |
55 | ||
56 | void insw(unsigned long addr, void *dst, unsigned long count) { | |
57 | while (count) { | |
58 | count -= 2; | |
59 | *(unsigned short *)dst = readw(addr); | |
60 | dst += 2; | |
61 | addr += 2; | |
62 | } | |
63 | } | |
64 | ||
65 | void insl(unsigned long addr, void *dst, unsigned long count) { | |
66 | while (count) { | |
67 | count -= 4; | |
68 | /* | |
69 | * XXX I am sure we are in for an unaligned trap here. | |
70 | */ | |
71 | *(unsigned long *)dst = readl(addr); | |
72 | dst += 4; | |
73 | addr += 4; | |
74 | } | |
75 | } |