| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |