/* * linux/arch/sh/kernel/io.c * * Copyright (C) 2000  Stuart Menefy * Copyright (C) 2005  Paul Mundt * * Provide real functions which expand to whatever the header file defined. * Also definitions of machine independent IO functions. * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. */#include <linux/module.h>#include <asm/machvec.h>#include <asm/io.h> /* * Copy data from IO memory space to "real" memory space. * This needs to be optimized. */void memcpy_fromio(void *to, volatile void __iomem *from, unsigned long count){	char *p = to;        while (count) {                count--;                *p = readb((void __iomem *)from);                p++;                from++;        }}EXPORT_SYMBOL(memcpy_fromio); /* * Copy data from "real" memory space to IO memory space. * This needs to be optimized. */void memcpy_toio(volatile void __iomem *to, const void *from, unsigned long count){	const char *p = from;        while (count) {                count--;                writeb(*p, (void __iomem *)to);                p++;                to++;        }}EXPORT_SYMBOL(memcpy_toio); /* * "memset" on IO memory space. * This needs to be optimized. */void memset_io(volatile void __iomem *dst, int c, unsigned long count){        while (count) {                count--;                writeb(c, (void __iomem *)dst);                dst++;        }}EXPORT_SYMBOL(memset_io); void __raw_readsl(unsigned long addr, void *datap, int len){	u32 *data; 	for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--)		*data++ = ctrl_inl(addr); 	if (likely(len >= (0x20 >> 2))) {		int tmp2, tmp3, tmp4, tmp5, tmp6; 		__asm__ __volatile__(			"1:			\n\t"			"mov.l	@%7, r0		\n\t"			"mov.l	@%7, %2		\n\t"#ifdef CONFIG_CPU_SH4			"movca.l r0, @%0	\n\t"#else			"mov.l	r0, @%0		\n\t"#endif			"mov.l	@%7, %3		\n\t"			"mov.l	@%7, %4		\n\t"			"mov.l	@%7, %5		\n\t"			"mov.l	@%7, %6		\n\t"			"mov.l	@%7, r7		\n\t"			"mov.l	@%7, r0		\n\t"			"mov.l	%2, @(0x04,%0)	\n\t"			"mov	#0x20>>2, %2	\n\t"			"mov.l	%3, @(0x08,%0)	\n\t"			"sub	%2, %1		\n\t"			"mov.l	%4, @(0x0c,%0)	\n\t"			"cmp/hi	%1, %2		! T if 32 > len	\n\t"			"mov.l	%5, @(0x10,%0)	\n\t"			"mov.l	%6, @(0x14,%0)	\n\t"			"mov.l	r7, @(0x18,%0)	\n\t"			"mov.l	r0, @(0x1c,%0)	\n\t"			"bf.s	1b		\n\t"			" add	#0x20, %0	\n\t"			: "=&r" (data), "=&r" (len),			  "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4),			  "=&r" (tmp5), "=&r" (tmp6)			: "r"(addr), "0" (data), "1" (len)			: "r0", "r7", "t", "memory");	} 	for (; len != 0; len--)		*data++ = ctrl_inl(addr);}EXPORT_SYMBOL(__raw_readsl); void __raw_writesl(unsigned long addr, const void *data, int len){	if (likely(len != 0)) {		int tmp1; 		__asm__ __volatile__ (			"1:				\n\t"			"mov.l	@%0+, %1	\n\t"			"dt		%3		\n\t"			"bf.s		1b		\n\t"			" mov.l	%1, @%4		\n\t"			: "=&r" (data), "=&r" (tmp1)			: "0" (data), "r" (len), "r"(addr)			: "t", "memory");	}}EXPORT_SYMBOL(__raw_writesl); void __iomem *ioport_map(unsigned long port, unsigned int nr){	return sh_mv.mv_ioport_map(port, nr);}EXPORT_SYMBOL(ioport_map); void ioport_unmap(void __iomem *addr){	sh_mv.mv_ioport_unmap(addr);}EXPORT_SYMBOL(ioport_unmap);