patch-2.4.0-test9 linux/include/asm-arm/arch-tbox/io.h

• Lines: 56
• Date: Mon Sep 18 15:15:23 2000
• Orig file: v2.4.0-test8/linux/include/asm-arm/arch-tbox/io.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.0-test8/linux/include/asm-arm/arch-tbox/io.h linux/include/asm-arm/arch-tbox/io.h
@@ -0,0 +1,55 @@
+/*
+ * linux/include/asm-arm/arch-tbox/io.h
+ *
+ * Copyright (C) 1996-1999 Russell King
+ * Copyright (C) 1998, 1999 Philip Blundell
+ *
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+#define __io_pc(_x)	((_x) << 2)
+
+/*
+ * Generic virtual read/write
+ */
+#define __arch_getb(a)		(*(volatile unsigned char *)(a))
+#define __arch_getl(a)		(*(volatile unsigned long *)(a))
+
+extern __inline__ unsigned int __arch_getw(unsigned long a)
+{
+	unsigned int value;
+	__asm__ __volatile__("ldr%?h	%0, [%1, #0]	@ getw"
+		: "=&r" (value)
+		: "r" (a));
+	return value;
+}
+
+
+#define __arch_putb(v,a)	(*(volatile unsigned char *)(a) = (v))
+#define __arch_putl(v,a)	(*(volatile unsigned long *)(a) = (v))
+
+extern __inline__ void __arch_putw(unsigned int value, unsigned long a)
+{
+	__asm__ __volatile__("str%?h	%0, [%1, #0]	@ putw"
+		: : "r" (value), "r" (a));
+}
+
+#define inb(p)			__arch_getb(__io_pc(p))
+#define inw(p)			__arch_getw(__io_pc(p))
+#define inl(p)			__arch_getl(__io_pc(p))
+
+#define outb(v,p)		__arch_putb(v,__io_pc(p))
+#define outw(v,p)		__arch_putw(v,__io_pc(p))
+#define outl(v,p)		__arch_putl(v,__io_pc(p))
+
+/* Idem, for devices on the upper byte lanes */
+#define inb_u(p)		__arch_getb(__io_pc(p) + 2)
+#define inw_u(p)		__arch_getw(__io_pc(p) + 2)
+
+#define outb_u(v,p)		__arch_putb(v,__io_pc(p) + 2)
+#define outw_u(v,p)		__arch_putw(v,__io_pc(p) + 2)
+
+#endif