patch-2.3.99-pre4 linux/include/asm-arm/arch-shark/io.h

• Lines: 208
• Date: Mon Mar 27 10:46:29 2000
• Orig file: v2.3.99-pre3/linux/include/asm-arm/arch-shark/io.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.99-pre3/linux/include/asm-arm/arch-shark/io.h linux/include/asm-arm/arch-shark/io.h
@@ -0,0 +1,207 @@
+/*
+ * linux/include/asm-arm/arch-shark/io.h
+ *
+ * by Alexander.Schulz@stud.uni-karlsruhe.de
+ *
+ * derived from:
+ * linux/include/asm-arm/arch-ebsa110/io.h
+ * Copyright (C) 1997,1998 Russell King
+ */
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_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.
+ */
+#define __PORT_PCIO(x)	(!((x) & 0x80000000))
+
+/*
+ * Dynamic IO functions - let the compiler
+ * optimize the expressions
+ */
+#define DECLARE_DYN_OUT(fnsuffix,instr)						\
+extern __inline__ void __out##fnsuffix (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" ##instr## "	%1, [%0, %2]	@ out"###fnsuffix	\
+	: "=&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]	@ 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));			\
+	else									\
+		return (unsigned int)(IO_BASE + (port));			\
+}
+
+#define DECLARE_IO(sz,fnsuffix,instr)	\
+	DECLARE_DYN_OUT(fnsuffix,instr)	\
+	DECLARE_DYN_IN(sz,fnsuffix,instr)
+
+DECLARE_IO(char,b,"b")
+DECLARE_IO(short,w,"h")
+DECLARE_IO(long,l,"")
+
+#undef DECLARE_IO
+#undef DECLARE_DYN_OUT
+#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));		\
+	else									\
+		__asm__ __volatile__(						\
+		"strb	%0, [%1, %2]		@ outbc"			\
+		: : "r" (value), "r" (IO_BASE), "r" (port));		\
+})
+
+#define __inbc(port)								\
+({										\
+	unsigned char result;                                                   \
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"ldrb	%0, [%1, %2]		@ inbc"				\
+		: "=r" (result) : "r" (PCIO_BASE), "Jr" (port));		\
+	else									\
+		__asm__ __volatile__(						\
+		"ldrb	%0, [%1, %2]		@ inbc"				\
+		: "=r" (result) : "r" (IO_BASE), "r" (port));		\
+	result;									\
+})
+
+#define __outwc(value,port)							\
+({										\
+	unsigned long v = value;						\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"strh	%0, [%1, %2]		@ outwc"			\
+		: : "r" (v|v<<16), "r" (PCIO_BASE), "Jr" (port));	\
+	else									\
+		__asm__ __volatile__(						\
+		"strh	%0, [%1, %2]		@ outwc"			\
+		: : "r" (v|v<<16), "r" (IO_BASE), "r" (port));		\
+})
+
+#define __inwc(port)								\
+({										\
+	unsigned short result;							\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"ldrh	%0, [%1, %2]		@ inwc"				\
+		: "=r" (result) : "r" (PCIO_BASE), "Jr" (port));		\
+	else									\
+		__asm__ __volatile__(						\
+		"ldrh	%0, [%1, %2]		@ inwc"				\
+		: "=r" (result) : "r" (IO_BASE), "r" (port));		\
+	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));		\
+	else									\
+		__asm__ __volatile__(						\
+		"str	%0, [%1, %2]		@ outlc"			\
+		: : "r" (v), "r" (IO_BASE), "r" (port));			\
+})
+
+#define __inlc(port)								\
+({										\
+	unsigned long result;							\
+	if (__PORT_PCIO((port)))						\
+		__asm__ __volatile__(						\
+		"ldr	%0, [%1, %2]		@ inlc"				\
+		: "=r" (result) : "r" (PCIO_BASE), "Jr" (port));		\
+	else									\
+		__asm__ __volatile__(						\
+		"ldr	%0, [%1, %2]		@ inlc"				\
+		: "=r" (result) : "r" (IO_BASE), "r" (port));		\
+	result;									\
+})
+
+#define __ioaddrc(port)								\
+({										\
+	unsigned long addr;							\
+	if (__PORT_PCIO((port)))						\
+		addr = PCIO_BASE + (port);				\
+	else									\
+		addr = IO_BASE + (port);					\
+	addr;									\
+})
+
+#define __mem_pci(addr) addr
+
+#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 __arch_getb(addr)	(*(volatile unsigned char *)(addr))
+#define __arch_getw(addr)	(*(volatile unsigned short *)(addr))
+#define __arch_getl(addr)	(*(volatile unsigned long *)(addr))
+
+#define __arch_putb(b,addr)	(*(volatile unsigned char *)(addr) = (b))
+#define __arch_putw(b,addr)	(*(volatile unsigned short *)(addr) = (b))
+#define __arch_putl(b,addr)	(*(volatile unsigned long *)(addr) = (b))
+
+/*
+ * 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 outl_t(v,p)								\
+	(*(volatile unsigned long *)(p) = (v))
+
+#define inl_t(p)								\
+	(*(volatile unsigned long *)(p))
+
+#endif