aboutsummaryrefslogtreecommitdiff
path: root/arch/m68k/include/asm/sbus.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-01-26 10:33:01 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-26 10:33:01 -0800
commitac3d266bf1bbbdd7efb6bd6760f2ee29e43bb132 (patch)
treed498e947176f4b77938034ff6c6427f9875da721 /arch/m68k/include/asm/sbus.h
parent9f4863b7dc7f545bb3a01746feafdc1208e86c89 (diff)
parent49148020bcb6910ce71417bd990a5ce7017f9bd3 (diff)
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k,m68knommu: merge header files Resolve trivial conflict in arch/m68knommu/include/asm/Kbuild
Diffstat (limited to 'arch/m68k/include/asm/sbus.h')
-rw-r--r--arch/m68k/include/asm/sbus.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/sbus.h b/arch/m68k/include/asm/sbus.h
new file mode 100644
index 00000000000..bfe3ba147f2
--- /dev/null
+++ b/arch/m68k/include/asm/sbus.h
@@ -0,0 +1,45 @@
+/*
+ * some sbus structures and macros to make usage of sbus drivers possible
+ */
+
+#ifndef __M68K_SBUS_H
+#define __M68K_SBUS_H
+
+struct sbus_dev {
+ struct {
+ unsigned int which_io;
+ unsigned int phys_addr;
+ } reg_addrs[1];
+};
+
+/* sbus IO functions stolen from include/asm-sparc/io.h for the serial driver */
+/* No SBUS on the Sun3, kludge -- sam */
+
+static inline void _sbus_writeb(unsigned char val, unsigned long addr)
+{
+ *(volatile unsigned char *)addr = val;
+}
+
+static inline unsigned char _sbus_readb(unsigned long addr)
+{
+ return *(volatile unsigned char *)addr;
+}
+
+static inline void _sbus_writel(unsigned long val, unsigned long addr)
+{
+ *(volatile unsigned long *)addr = val;
+
+}
+
+extern inline unsigned long _sbus_readl(unsigned long addr)
+{
+ return *(volatile unsigned long *)addr;
+}
+
+
+#define sbus_readb(a) _sbus_readb((unsigned long)a)
+#define sbus_writeb(v, a) _sbus_writeb(v, (unsigned long)a)
+#define sbus_readl(a) _sbus_readl((unsigned long)a)
+#define sbus_writel(v, a) _sbus_writel(v, (unsigned long)a)
+
+#endif