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/arch/arm/lib/io-shark.c

https://bitbucket.org/evzijst/gittest
C | 83 lines | 42 code | 15 blank | 26 comment | 2 complexity | 8d1a8f64ff61d71bd8d2b0e0e5bc1784 MD5 | raw file
 1/*
 2 *  linux/arch/arm/lib/io-shark.c
 3 *
 4 *  by Alexander Schulz
 5 *
 6 * derived from:
 7 * linux/arch/arm/lib/io-ebsa.S
 8 * Copyright (C) 1995, 1996 Russell King
 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14#include <linux/kernel.h>
15
16#include <asm/io.h>
17
18void print_warning(void)
19{
20	printk(KERN_WARNING "ins?/outs? not implemented on this architecture\n");
21}
22
23void insl(unsigned int port, void *to, int len)
24{
25	print_warning();
26}
27
28void insb(unsigned int port, void *to, int len)
29{
30	print_warning();
31}
32
33void outsl(unsigned int port, const void *from, int len)
34{
35	print_warning();
36}
37
38void outsb(unsigned int port, const void *from, int len)
39{
40	print_warning();
41}
42
43/* these should be in assembler again */
44
45/*
46 * Purpose: read a block of data from a hardware register to memory.
47 * Proto  : insw(int from_port, void *to, int len_in_words);
48 * Proto  : inswb(int from_port, void *to, int len_in_bytes);
49 * Notes  : increment to
50 */
51
52void insw(unsigned int port, void *to, int len)
53{
54	int i;
55
56	for (i = 0; i < len; i++)
57		((unsigned short *) to)[i] = inw(port);
58}
59
60void inswb(unsigned int port, void *to, int len)
61{
62	insw(port, to, len >> 2);
63}
64
65/*
66 * Purpose: write a block of data from memory to a hardware register.
67 * Proto  : outsw(int to_reg, void *from, int len_in_words);
68 * Proto  : outswb(int to_reg, void *from, int len_in_bytes);
69 * Notes  : increments from
70 */
71
72void outsw(unsigned int port, const void *from, int len)
73{
74	int i;
75
76	for (i = 0; i < len; i++)
77		outw(((unsigned short *) from)[i], port);
78}
79
80void outswb(unsigned int port, const void *from, int len)
81{
82	outsw(port, from, len >> 2);
83}