46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
/*
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* some sbus structures and macros to make usage of sbus drivers possible
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*/
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#ifndef __M68K_SBUS_H
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#define __M68K_SBUS_H
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struct sbus_dev {
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struct {
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unsigned int which_io;
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unsigned int phys_addr;
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} reg_addrs[1];
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};
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/* sbus IO functions stolen from include/asm-sparc/io.h for the serial driver */
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/* No SBUS on the Sun3, kludge -- sam */
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static inline void _sbus_writeb(unsigned char val, unsigned long addr)
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{
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*(volatile unsigned char *)addr = val;
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}
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static inline unsigned char _sbus_readb(unsigned long addr)
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{
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return *(volatile unsigned char *)addr;
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}
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static inline void _sbus_writel(unsigned long val, unsigned long addr)
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{
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*(volatile unsigned long *)addr = val;
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}
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extern inline unsigned long _sbus_readl(unsigned long addr)
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{
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return *(volatile unsigned long *)addr;
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}
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#define sbus_readb(a) _sbus_readb((unsigned long)a)
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#define sbus_writeb(v, a) _sbus_writeb(v, (unsigned long)a)
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#define sbus_readl(a) _sbus_readl((unsigned long)a)
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#define sbus_writel(v, a) _sbus_writel(v, (unsigned long)a)
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#endif
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