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 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 51