tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
15/* sbus IO functions stolen from include/asm-sparc/io.h for the serial driver */
16/* No SBUS on the Sun3, kludge -- sam */
17
18static inline void _sbus_writeb(unsigned char val, unsigned long addr)
19{
20 *(volatile unsigned char *)addr = val;
21}
22
23static inline unsigned char _sbus_readb(unsigned long addr)
24{
25 return *(volatile unsigned char *)addr;
26}
27
28static inline void _sbus_writel(unsigned long val, unsigned long addr)
29{
30 *(volatile unsigned long *)addr = val;
31
32}
33
34extern 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