1 // SPDX-License-Identifier: GPL-2.0
3 * arch/sh/lib/io.c - SH32 optimized I/O routines
5 * Copyright (C) 2000 Stuart Menefy
6 * Copyright (C) 2005 Paul Mundt
8 * Provide real functions which expand to whatever the header file defined.
9 * Also definitions of machine independent IO functions.
11 #include <linux/module.h>
14 void __raw_readsl(const void __iomem *addr, void *datap, int len)
18 for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--)
19 *data++ = __raw_readl(addr);
21 if (likely(len >= (0x20 >> 2))) {
22 int tmp2, tmp3, tmp4, tmp5, tmp6;
29 "movca.l r0, @%0 \n\t"
39 "mov.l %2, @(0x04,%0) \n\t"
40 "mov #0x20>>2, %2 \n\t"
41 "mov.l %3, @(0x08,%0) \n\t"
43 "mov.l %4, @(0x0c,%0) \n\t"
44 "cmp/hi %1, %2 ! T if 32 > len \n\t"
45 "mov.l %5, @(0x10,%0) \n\t"
46 "mov.l %6, @(0x14,%0) \n\t"
47 "mov.l r7, @(0x18,%0) \n\t"
48 "mov.l r0, @(0x1c,%0) \n\t"
51 : "=&r" (data), "=&r" (len),
52 "=&r" (tmp2), "=&r" (tmp3), "=&r" (tmp4),
53 "=&r" (tmp5), "=&r" (tmp6)
54 : "r"(addr), "0" (data), "1" (len)
55 : "r0", "r7", "t", "memory");
58 for (; len != 0; len--)
59 *data++ = __raw_readl(addr);
61 EXPORT_SYMBOL(__raw_readsl);
63 void __raw_writesl(void __iomem *addr, const void *data, int len)
65 if (likely(len != 0)) {
68 __asm__ __volatile__ (
74 : "=&r" (data), "=&r" (tmp1)
75 : "0" (data), "r" (len), "r"(addr)
79 EXPORT_SYMBOL(__raw_writesl);