Loading...
1/*
2 * arch/sh/lib/io.c - SH32 optimized I/O routines
3 *
4 * Copyright (C) 2000 Stuart Menefy
5 * Copyright (C) 2005 Paul Mundt
6 *
7 * Provide real functions which expand to whatever the header file defined.
8 * Also definitions of machine independent IO functions.
9 *
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
12 * for more details.
13 */
14#include <linux/module.h>
15#include <linux/io.h>
16
17void __raw_readsl(const void __iomem *addr, void *datap, int len)
18{
19 u32 *data;
20
21 for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--)
22 *data++ = __raw_readl(addr);
23
24 if (likely(len >= (0x20 >> 2))) {
25 int tmp2, tmp3, tmp4, tmp5, tmp6;
26
27 __asm__ __volatile__(
28 "1: \n\t"
29 "mov.l @%7, r0 \n\t"
30 "mov.l @%7, %2 \n\t"
31#ifdef CONFIG_CPU_SH4
32 "movca.l r0, @%0 \n\t"
33#else
34 "mov.l r0, @%0 \n\t"
35#endif
36 "mov.l @%7, %3 \n\t"
37 "mov.l @%7, %4 \n\t"
38 "mov.l @%7, %5 \n\t"
39 "mov.l @%7, %6 \n\t"
40 "mov.l @%7, r7 \n\t"
41 "mov.l @%7, r0 \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"
45 "sub %2, %1 \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"
52 "bf.s 1b \n\t"
53 " add #0x20, %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");
59 }
60
61 for (; len != 0; len--)
62 *data++ = __raw_readl(addr);
63}
64EXPORT_SYMBOL(__raw_readsl);
65
66void __raw_writesl(void __iomem *addr, const void *data, int len)
67{
68 if (likely(len != 0)) {
69 int tmp1;
70
71 __asm__ __volatile__ (
72 "1: \n\t"
73 "mov.l @%0+, %1 \n\t"
74 "dt %3 \n\t"
75 "bf.s 1b \n\t"
76 " mov.l %1, @%4 \n\t"
77 : "=&r" (data), "=&r" (tmp1)
78 : "0" (data), "r" (len), "r"(addr)
79 : "t", "memory");
80 }
81}
82EXPORT_SYMBOL(__raw_writesl);
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * arch/sh/lib/io.c - SH32 optimized I/O routines
4 *
5 * Copyright (C) 2000 Stuart Menefy
6 * Copyright (C) 2005 Paul Mundt
7 *
8 * Provide real functions which expand to whatever the header file defined.
9 * Also definitions of machine independent IO functions.
10 */
11#include <linux/module.h>
12#include <linux/io.h>
13
14void __raw_readsl(const void __iomem *addr, void *datap, int len)
15{
16 u32 *data;
17
18 for (data = datap; (len != 0) && (((u32)data & 0x1f) != 0); len--)
19 *data++ = __raw_readl(addr);
20
21 if (likely(len >= (0x20 >> 2))) {
22 int tmp2, tmp3, tmp4, tmp5, tmp6;
23
24 __asm__ __volatile__(
25 "1: \n\t"
26 "mov.l @%7, r0 \n\t"
27 "mov.l @%7, %2 \n\t"
28#ifdef CONFIG_CPU_SH4
29 "movca.l r0, @%0 \n\t"
30#else
31 "mov.l r0, @%0 \n\t"
32#endif
33 "mov.l @%7, %3 \n\t"
34 "mov.l @%7, %4 \n\t"
35 "mov.l @%7, %5 \n\t"
36 "mov.l @%7, %6 \n\t"
37 "mov.l @%7, r7 \n\t"
38 "mov.l @%7, r0 \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"
42 "sub %2, %1 \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"
49 "bf.s 1b \n\t"
50 " add #0x20, %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");
56 }
57
58 for (; len != 0; len--)
59 *data++ = __raw_readl(addr);
60}
61EXPORT_SYMBOL(__raw_readsl);
62
63void __raw_writesl(void __iomem *addr, const void *data, int len)
64{
65 if (likely(len != 0)) {
66 int tmp1;
67
68 __asm__ __volatile__ (
69 "1: \n\t"
70 "mov.l @%0+, %1 \n\t"
71 "dt %3 \n\t"
72 "bf.s 1b \n\t"
73 " mov.l %1, @%4 \n\t"
74 : "=&r" (data), "=&r" (tmp1)
75 : "0" (data), "r" (len), "r"(addr)
76 : "t", "memory");
77 }
78}
79EXPORT_SYMBOL(__raw_writesl);