2 * arch/sh/lib/io.c - SH32 optimized I/O routines
4 * Copyright (C) 2000 Stuart Menefy
5 * Copyright (C) 2005 Paul Mundt
7 * Provide real functions which expand to whatever the header file defined.
8 * Also definitions of machine independent IO functions.
10 * This file is subject to the terms and conditions of the GNU General Public
11 * License. See the file "COPYING" in the main directory of this archive
14 #include <linux/module.h>
17 void __raw_readsl(const void __iomem *addr, void *datap, int len)
21 for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--)
22 *data++ = __raw_readl(addr);
24 if (likely(len >= (0x20 >> 2))) {
25 int tmp2, tmp3, tmp4, tmp5, tmp6;
32 "movca.l r0, @%0 \n\t"
42 "mov.l %2, @(0x04,%0) \n\t"
43 "mov #0x20>>2, %2 \n\t"
44 "mov.l %3, @(0x08,%0) \n\t"
46 "mov.l %4, @(0x0c,%0) \n\t"
47 "cmp/hi %1, %2 ! T if 32 > len \n\t"
48 "mov.l %5, @(0x10,%0) \n\t"
49 "mov.l %6, @(0x14,%0) \n\t"
50 "mov.l r7, @(0x18,%0) \n\t"
51 "mov.l r0, @(0x1c,%0) \n\t"
54 : "=&r" (data), "=&r" (len),
55 "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4),
56 "=&r" (tmp5), "=&r" (tmp6)
57 : "r"(addr), "0" (data), "1" (len)
58 : "r0", "r7", "t", "memory");
61 for (; len != 0; len--)
62 *data++ = __raw_readl(addr);
64 EXPORT_SYMBOL(__raw_readsl);
66 void __raw_writesl(void __iomem *addr, const void *data, int len)
68 if (likely(len != 0)) {
71 __asm__ __volatile__ (
77 : "=&r" (data), "=&r" (tmp1)
78 : "0" (data), "r" (len), "r"(addr)
82 EXPORT_SYMBOL(__raw_writesl);