blob: 3b25c0040aa69a80f05dcc2fc0a9422b64cc3fba [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * some sbus structures and macros to make usage of sbus drivers possible
3 */
4
5#ifndef __M68K_SBUS_H
6#define __M68K_SBUS_H
7
8struct sbus_dev {
9 struct {
10 unsigned int which_io;
11 unsigned int phys_addr;
12 } reg_addrs[1];
13};
14
15extern void *sparc_alloc_io (u32, void *, int, char *, u32, int);
16#define sparc_alloc_io(a,b,c,d,e,f) (a)
17
18#define ARCH_SUN4 0
19
20/* sbus IO functions stolen from include/asm-sparc/io.h for the serial driver */
21/* No SBUS on the Sun3, kludge -- sam */
22
23static inline void _sbus_writeb(unsigned char val, unsigned long addr)
24{
25 *(volatile unsigned char *)addr = val;
26}
27
28static inline unsigned char _sbus_readb(unsigned long addr)
29{
30 return *(volatile unsigned char *)addr;
31}
32
33static inline void _sbus_writel(unsigned long val, unsigned long addr)
34{
35 *(volatile unsigned long *)addr = val;
36
37}
38
39extern inline unsigned long _sbus_readl(unsigned long addr)
40{
41 return *(volatile unsigned long *)addr;
42}
43
44
45#define sbus_readb(a) _sbus_readb((unsigned long)a)
46#define sbus_writeb(v, a) _sbus_writeb(v, (unsigned long)a)
47#define sbus_readl(a) _sbus_readl((unsigned long)a)
48#define sbus_writel(v, a) _sbus_writel(v, (unsigned long)a)
49
50#endif