83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
/*
|
|
* arch/sh/lib/io.c - SH32 optimized I/O routines
|
|
*
|
|
* 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 <linux/io.h>
|
|
|
|
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);
|