Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
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 | ||
8 | struct sbus_dev { | |
9 | struct { | |
10 | unsigned int which_io; | |
11 | unsigned int phys_addr; | |
12 | } reg_addrs[1]; | |
13 | }; | |
14 | ||
1da177e4 LT |
15 | /* sbus IO functions stolen from include/asm-sparc/io.h for the serial driver */ |
16 | /* No SBUS on the Sun3, kludge -- sam */ | |
17 | ||
18 | static inline void _sbus_writeb(unsigned char val, unsigned long addr) | |
19 | { | |
20 | *(volatile unsigned char *)addr = val; | |
21 | } | |
22 | ||
23 | static inline unsigned char _sbus_readb(unsigned long addr) | |
24 | { | |
25 | return *(volatile unsigned char *)addr; | |
26 | } | |
27 | ||
28 | static inline void _sbus_writel(unsigned long val, unsigned long addr) | |
29 | { | |
30 | *(volatile unsigned long *)addr = val; | |
31 | ||
32 | } | |
33 | ||
34 | extern inline unsigned long _sbus_readl(unsigned long addr) | |
35 | { | |
36 | return *(volatile unsigned long *)addr; | |
37 | } | |
38 | ||
39 | ||
40 | #define sbus_readb(a) _sbus_readb((unsigned long)a) | |
41 | #define sbus_writeb(v, a) _sbus_writeb(v, (unsigned long)a) | |
42 | #define sbus_readl(a) _sbus_readl((unsigned long)a) | |
43 | #define sbus_writel(v, a) _sbus_writel(v, (unsigned long)a) | |
44 | ||
45 | #endif |