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
print_warning(void)18 void print_warning(void)
19 {
20 printk(KERN_WARNING "ins?/outs? not implemented on this architecture\n");
21 }
22
insl(unsigned int port,void * to,int len)23 void insl(unsigned int port, void *to, int len)
24 {
25 print_warning();
26 }
27
insb(unsigned int port,void * to,int len)28 void insb(unsigned int port, void *to, int len)
29 {
30 print_warning();
31 }
32
outsl(unsigned int port,const void * from,int len)33 void outsl(unsigned int port, const void *from, int len)
34 {
35 print_warning();
36 }
37
outsb(unsigned int port,const void * from,int len)38 void 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
insw(unsigned int port,void * to,int len)52 void 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
inswb(unsigned int port,void * to,int len)60 void 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
outsw(unsigned int port,const void * from,int len)72 void 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
outswb(unsigned int port,const void * from,int len)80 void outswb(unsigned int port, const void *from, int len)
81 {
82 outsw(port, from, len >> 2);
83 }
84