1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * I/O access functions for Hexagon
4 *
5 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
6 */
7
8#include <asm/io.h>
9
10/*  These are all FIFO routines!  */
11
12/*
13 * __raw_readsw - read words a short at a time
14 * @addr:  source address
15 * @data:  data address
16 * @len: number of shorts to read
17 */
18void __raw_readsw(const void __iomem *addr, void *data, int len)
19{
20	const volatile short int *src = (short int *) addr;
21	short int *dst = (short int *) data;
22
23	if ((u32)data & 0x1)
24		panic("unaligned pointer to readsw");
25
26	while (len-- > 0)
27		*dst++ = *src;
28
29}
30EXPORT_SYMBOL(__raw_readsw);
31
32/*
33 * __raw_writesw - read words a short at a time
34 * @addr:  source address
35 * @data:  data address
36 * @len: number of shorts to read
37 */
38void __raw_writesw(void __iomem *addr, const void *data, int len)
39{
40	const short int *src = (short int *)data;
41	volatile short int *dst = (short int *)addr;
42
43	if ((u32)data & 0x1)
44		panic("unaligned pointer to writesw");
45
46	while (len-- > 0)
47		*dst = *src++;
48
49
50}
51EXPORT_SYMBOL(__raw_writesw);
52
53/*  Pretty sure len is pre-adjusted for the length of the access already */
54void __raw_readsl(const void __iomem *addr, void *data, int len)
55{
56	const volatile long *src = (long *) addr;
57	long *dst = (long *) data;
58
59	if ((u32)data & 0x3)
60		panic("unaligned pointer to readsl");
61
62	while (len-- > 0)
63		*dst++ = *src;
64
65
66}
67EXPORT_SYMBOL(__raw_readsl);
68
69void __raw_writesl(void __iomem *addr, const void *data, int len)
70{
71	const long *src = (long *)data;
72	volatile long *dst = (long *)addr;
73
74	if ((u32)data & 0x3)
75		panic("unaligned pointer to writesl");
76
77	while (len-- > 0)
78		*dst = *src++;
79
80
81}
82EXPORT_SYMBOL(__raw_writesl);
83