patch-2.3.99-pre9 linux/include/asm-arm/arch-l7200/io.h

• Lines: 211
• Date: Mon May 15 12:00:33 2000
• Orig file: v2.3.99-pre8/linux/include/asm-arm/arch-l7200/io.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre8/linux/include/asm-arm/arch-l7200/io.h linux/include/asm-arm/arch-l7200/io.h
@@ -0,0 +1,210 @@
+/*
+ * linux/include/asm-arm/arch-l7200/io.h
+ *
+ * Copyright (C) 2000 Steven Hill (sjhill@cotw.com)
+ *
+ * Modifications:
+ *  21-03-2000	SJH	Created from linux/include/asm-arm/arch-nexuspci/io.h
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#include <asm/arch/hardware.h>
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+/*
+ * We use two different types of addressing - PC style addresses, and ARM
+ * addresses.  PC style accesses the PC hardware with the normal PC IO
+ * addresses, eg 0x3f8 for serial#1.  ARM addresses are 0x80000000+
+ * and are translated to the start of IO.  Note that all addresses are
+ * shifted left!
+ */
+#define __PORT_PCIO(x)	(!((x) & 0x80000000))
+
+/*
+ * Dynamic IO functions.
+ */
+
+extern __inline__ void __outb (unsigned int value, unsigned int port)
+{
+	unsigned long temp;
+	__asm__ __volatile__(
+	"tst	%2, #0x80000000\n\t"
+	"mov	%0, %4\n\t"
+	"addeq	%0, %0, %3\n\t"
+	"strb	%1, [%0, %2, lsl #2]	@ outb"
+	: "=&r" (temp)
+	: "r" (value), "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE)
+	: "cc");
+}
+
+extern __inline__ void __outw (unsigned int value, unsigned int port)
+{
+	unsigned long temp;
+	__asm__ __volatile__(
+	"tst	%2, #0x80000000\n\t"
+	"mov	%0, %4\n\t"
+	"addeq	%0, %0, %3\n\t"
+	"str	%1, [%0, %2, lsl #2]	@ outw"
+	: "=&r" (temp)
+	: "r" (value|value<<16), "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE)
+	: "cc");
+}
+
+extern __inline__ void __outl (unsigned int value, unsigned int port)
+{
+	unsigned long temp;
+	__asm__ __volatile__(
+	"tst	%2, #0x80000000\n\t"
+	"mov	%0, %4\n\t"
+	"addeq	%0, %0, %3\n\t"
+	"str	%1, [%0, %2, lsl #2]	@ outl"
+	: "=&r" (temp)
+	: "r" (value), "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE)
+	: "cc");
+}
+
+#define DECLARE_DYN_IN(sz,fnsuffix,instr)					\
+extern __inline__ unsigned sz __in##fnsuffix (unsigned int port)		\
+{										\
+	unsigned long temp, value;						\
+	__asm__ __volatile__(							\
+	"tst	%2, #0x80000000\n\t"						\
+	"mov	%0, %4\n\t"							\
+	"addeq	%0, %0, %3\n\t"							\
+	"ldr" ##instr## "	%1, [%0, %2, lsl #2]	@ in"###fnsuffix	\
+	: "=&r" (temp), "=r" (value)						\
+	: "r" (port), "Ir" (PCIO_BASE - IO_BASE), "Ir" (IO_BASE)		\
+	: "cc");								\
+	return (unsigned sz)value;						\
+}
+
+extern __inline__ unsigned int __ioaddr (unsigned int port)			\
+{										\
+	if (__PORT_PCIO(port))							\
+		return (unsigned int)(PCIO_BASE + (port << 2));			\
+	else									\
+		return (unsigned int)(IO_BASE + (port << 2));			\
+}
+
+#define DECLARE_IO(sz,fnsuffix,instr)	\
+	DECLARE_DYN_IN(sz,fnsuffix,instr)
+
+DECLARE_IO(char,b,"b")
+DECLARE_IO(short,w,"")
+DECLARE_IO(int,l,"")
+
+#undef DECLARE_IO
+#undef DECLARE_DYN_IN
+
+/*
+ * Constant address IO functions
+ *
+ * These have to be macros for the 'J' constraint to work -
+ * +/-4096 immediate operand.
+ */
+#define __outbc(value,port)							\
+({										\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"strb	%0, [%1, %2]	@ outbc"				\
+		: : "r" (value), "r" (PCIO_BASE), "Jr" ((port) << 2));		\
+	else									\
+		__asm__ __volatile__(						\
+		"strb	%0, [%1, %2]	@ outbc"				\
+		: : "r" (value), "r" (IO_BASE), "r" ((port) << 2));		\
+})
+
+#define __inbc(port)								\
+({										\
+	unsigned char result;							\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"ldrb	%0, [%1, %2]	@ inbc"					\
+		: "=r" (result) : "r" (PCIO_BASE), "Jr" ((port) << 2));		\
+	else									\
+		__asm__ __volatile__(						\
+		"ldrb	%0, [%1, %2]	@ inbc"					\
+		: "=r" (result) : "r" (IO_BASE), "r" ((port) << 2));		\
+	result;									\
+})
+
+#define __outwc(value,port)							\
+({										\
+	unsigned long v = value;						\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"str	%0, [%1, %2]	@ outwc"				\
+		: : "r" (v|v<<16), "r" (PCIO_BASE), "Jr" ((port) << 2));	\
+	else									\
+		__asm__ __volatile__(						\
+		"str	%0, [%1, %2]	@ outwc"				\
+		: : "r" (v|v<<16), "r" (IO_BASE), "r" ((port) << 2));		\
+})
+
+#define __inwc(port)								\
+({										\
+	unsigned short result;							\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"ldr	%0, [%1, %2]	@ inwc"					\
+		: "=r" (result) : "r" (PCIO_BASE), "Jr" ((port) << 2));		\
+	else									\
+		__asm__ __volatile__(						\
+		"ldr	%0, [%1, %2]	@ inwc"					\
+		: "=r" (result) : "r" (IO_BASE), "r" ((port) << 2));		\
+	result & 0xffff;							\
+})
+
+#define __outlc(value,port)							\
+({										\
+	unsigned long v = value;						\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"str	%0, [%1, %2]	@ outlc"				\
+		: : "r" (v), "r" (PCIO_BASE), "Jr" ((port) << 2));		\
+	else									\
+		__asm__ __volatile__(						\
+		"str	%0, [%1, %2]	@ outlc"				\
+		: : "r" (v), "r" (IO_BASE), "r" ((port) << 2));			\
+})
+
+#define __inlc(port)								\
+({										\
+	unsigned long result;							\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"ldr	%0, [%1, %2]	@ inlc"					\
+		: "=r" (result) : "r" (PCIO_BASE), "Jr" ((port) << 2));		\
+	else									\
+		__asm__ __volatile__(						\
+		"ldr	%0, [%1, %2]	@ inlc"					\
+		: "=r" (result) : "r" (IO_BASE), "r" ((port) << 2));		\
+	result;									\
+})
+
+#define __ioaddrc(port)								\
+	(__PORT_PCIO((port)) ? PCIO_BASE + ((port) << 2) : IO_BASE + ((port) << 2))
+
+#define inb(p)	 	(__builtin_constant_p((p)) ? __inbc(p)    : __inb(p))
+#define inw(p)	 	(__builtin_constant_p((p)) ? __inwc(p)    : __inw(p))
+#define inl(p)	 	(__builtin_constant_p((p)) ? __inlc(p)    : __inl(p))
+#define outb(v,p)	(__builtin_constant_p((p)) ? __outbc(v,p) : __outb(v,p))
+#define outw(v,p)	(__builtin_constant_p((p)) ? __outwc(v,p) : __outw(v,p))
+#define outl(v,p)	(__builtin_constant_p((p)) ? __outlc(v,p) : __outl(v,p))
+#define __ioaddr(p)	(__builtin_constant_p((p)) ? __ioaddr(p)  : __ioaddrc(p))
+
+/*
+ * Translated address IO functions
+ *
+ * IO address has already been translated to a virtual address
+ */
+#define outb_t(v,p)	(*(volatile unsigned char *)(p) = (v))
+#define inb_t(p)	(*(volatile unsigned char *)(p))
+#define outw_t(v,p)	(*(volatile unsigned int *)(p) = (v))
+#define inw_t(p)	(*(volatile unsigned int *)(p))
+#define outl_t(v,p)	(*(volatile unsigned long *)(p) = (v))
+#define inl_t(p)	(*(volatile unsigned long *)(p))
+
+#endif