patch-2.1.80 linux/include/asm-arm/io.h

• Lines: 204
• Date: Tue Jan 20 16:39:42 1998
• Orig file: v2.1.79/linux/include/asm-arm/io.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.79/linux/include/asm-arm/io.h linux/include/asm-arm/io.h
@@ -0,0 +1,203 @@
+/*
+ * linux/include/asm-arm/io.h
+ *
+ * Copyright (C) 1996 Russell King
+ *
+ * Modifications:
+ *  16-Sep-1996	RMK	Inlined the inx/outx functions & optimised for both
+ *			constant addresses and variable addresses.
+ *  04-Dec-1997	RMK	Moved a lot of this stuff to the new architecture
+ *			specific IO header files.
+ */
+#ifndef __ASM_ARM_IO_H
+#define __ASM_ARM_IO_H
+
+#include <asm/hardware.h>
+#include <asm/arch/mmu.h>
+#include <asm/arch/io.h>
+
+/* unsigned long virt_to_phys(void *x) */
+#define virt_to_phys(x)		__virt_to_phys((unsigned long)(x))
+
+/* void *phys_to_virt(unsigned long x) */
+#define phys_to_virt(x)		((void *)(__phys_to_virt((unsigned long)(x))))
+
+/*
+ * These macros actually build the multi-value IO function prototypes
+ */
+#define __OUTS(s,i,x)	extern void outs##s(unsigned int port, const void *from, int len);
+#define __INS(s,i,x)	extern void ins##s(unsigned int port, void *to, int len);
+
+#define __IO(s,i,x) \
+  __OUTS(s,i,x) \
+  __INS(s,i,x)
+
+__IO(b,"b",char)
+__IO(w,"h",short)
+__IO(l,"",long)
+
+/*
+ * Note that due to the way __builtin_constant_t() works, you
+ *  - can't use it inside an inline function (it will never be true)
+ *  - you don't have to worry about side effects withing the __builtin..
+ */
+#ifdef __outbc
+#define outb(val,port)	\
+  (__builtin_constant_p((port)) ? __outbc((val),(port)) : __outb((val),(port)))
+#else
+#define outb(val,port) __outb((val),(port))
+#endif
+
+#ifdef __outwc
+#define outw(val,port)	\
+  (__builtin_constant_p((port)) ? __outwc((val),(port)) : __outw((val),(port)))
+#else
+#define outw(val,port) __outw((val),(port))
+#endif
+
+#ifdef __outlc
+#define outl(val,port)	\
+  (__builtin_constant_p((port)) ? __outlc((val),(port)) : __outl((val),(port)))
+#else
+#define outl(val,port) __outl((val),(port))
+#endif
+
+#ifdef __inbc
+#define inb(port)	\
+  (__builtin_constant_p((port)) ? __inbc((port)) : __inb((port)))
+#else
+#define inb(port) __inb((port))
+#endif
+
+#ifdef __inwc
+#define inw(port)	\
+  (__builtin_constant_p((port)) ? __inwc((port)) : __inw((port)))
+#else
+#define inw(port) __inw((port))
+#endif
+
+#ifdef __inlc
+#define inl(port)	\
+  (__builtin_constant_p((port)) ? __inlc((port)) : __inl((port)))
+#else
+#define inl(port) __inl((port))
+#endif
+
+/*
+ * This macro will give you the translated IO address for this particular
+ * architecture, which can be used with the out_t... functions.
+ */
+#define ioaddr(port)	\
+  (__builtin_constant_p((port)) ? __ioaddrc((port)) : __ioaddr((port)))
+
+#ifndef ARCH_IO_DELAY
+/*
+ * This architecture does not require any delayed IO.
+ * It is handled in the hardware.
+ */
+#define outb_p(val,port)	outb((val),(port))
+#define outw_p(val,port)	outw((val),(port))
+#define outl_p(val,port)	outl((val),(port))
+#define inb_p(port)		inb((port))
+#define inw_p(port)		inw((port))
+#define inl_p(port)		inl((port))
+#define outsb_p(port,from,len)	outsb(port,from,len)
+#define outsw_p(port,from,len)	outsw(port,from,len)
+#define outsl_p(port,from,len)	outsl(port,from,len)
+#define insb_p(port,to,len)	insb(port,to,len)
+#define insw_p(port,to,len)	insw(port,to,len)
+#define insl_p(port,to,len)	insl(port,to,len)
+
+#else
+
+/*
+ * We have to delay the IO...
+ */
+#ifdef __outbc_p
+#define outb_p(val,port)	\
+  (__builtin_constant_p((port)) ? __outbc_p((val),(port)) : __outb_p((val),(port)))
+#else
+#define outb_p(val,port) __outb_p((val),(port))
+#endif
+
+#ifdef __outwc_p
+#define outw_p(val,port)	\
+  (__builtin_constant_p((port)) ? __outwc_p((val),(port)) : __outw_p((val),(port)))
+#else
+#define outw_p(val,port) __outw_p((val),(port))
+#endif
+
+#ifdef __outlc_p
+#define outl_p(val,port)	\
+  (__builtin_constant_p((port)) ? __outlc_p((val),(port)) : __outl_p((val),(port)))
+#else
+#define outl_p(val,port) __outl_p((val),(port))
+#endif
+
+#ifdef __inbc_p
+#define inb_p(port)	\
+  (__builtin_constant_p((port)) ? __inbc_p((port)) : __inb_p((port)))
+#else
+#define inb_p(port) __inb_p((port))
+#endif
+
+#ifdef __inwc_p
+#define inw_p(port)	\
+  (__builtin_constant_p((port)) ? __inwc_p((port)) : __inw_p((port)))
+#else
+#define inw_p(port) __inw_p((port))
+#endif
+
+#ifdef __inlc_p
+#define inl_p(port)	\
+  (__builtin_constant_p((port)) ? __inlc_p((port)) : __inl_p((port)))
+#else
+#define inl_p(port) __inl_p((port))
+#endif
+
+#endif
+
+#undef ARCH_IO_DELAY
+#undef ARCH_IO_CONSTANT
+
+/*
+ * Leftovers...
+ */
+#if 0
+#define __outwc(value,port)						\
+({									\
+	if (port < 256)							\
+		__asm__ __volatile__(					\
+		"strh	%0, [%1, %2]"					\
+		: : "r" (value), "r" (PCIO_BASE), "J" (port << 2));	\
+	else if (__PORT_PCIO(port))					\
+		__asm__ __volatile__(					\
+		"strh	%0, [%1, %2]"					\
+		: : "r" (value), "r" (PCIO_BASE), "r" (port << 2));	\
+	else								\
+		__asm__ __volatile__(					\
+		"strh	%0, [%1, %2]"					\
+		: : "r" (value), "r" (IO_BASE), "r" (port << 2));	\
+})
+
+#define __inwc(port)							\
+({									\
+	unsigned short result;						\
+	if (port < 256)							\
+		__asm__ __volatile__(					\
+		"ldrh	%0, [%1, %2]"					\
+		: "=r" (result) : "r" (PCIO_BASE), "J" (port << 2));	\
+	else								\
+	if (__PORT_PCIO(port))						\
+		__asm__ __volatile__(					\
+		"ldrh	%0, [%1, %2]"					\
+		: "=r" (result) : "r" (PCIO_BASE), "r" (port << 2));	\
+	else								\
+		__asm__ __volatile__(					\
+		"ldrh	%0, [%1, %2]"					\
+		: "=r" (result) : "r" (IO_BASE), "r" (port << 2));	\
+	result;								\
+})
+#endif
+#endif
+