1/*
 2 * I/O access functions for Hexagon
 3 *
 4 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
 5 *
 6 * This program is free software; you can redistribute it and/or modify
 7 * it under the terms of the GNU General Public License version 2 and
 8 * only version 2 as published by the Free Software Foundation.
 9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
18 * 02110-1301, USA.
19 */
20
21#include <asm/io.h>
22
23/*  These are all FIFO routines!  */
24
25/*
26 * __raw_readsw - read words a short at a time
27 * @addr:  source address
28 * @data:  data address
29 * @len: number of shorts to read
30 */
31void __raw_readsw(const void __iomem *addr, void *data, int len)
32{
33	const volatile short int *src = (short int *) addr;
34	short int *dst = (short int *) data;
35
36	if ((u32)data & 0x1)
37		panic("unaligned pointer to readsw");
38
39	while (len-- > 0)
40		*dst++ = *src;
41
42}
 
43
44/*
45 * __raw_writesw - read words a short at a time
46 * @addr:  source address
47 * @data:  data address
48 * @len: number of shorts to read
49 */
50void __raw_writesw(void __iomem *addr, const void *data, int len)
51{
52	const short int *src = (short int *)data;
53	volatile short int *dst = (short int *)addr;
54
55	if ((u32)data & 0x1)
56		panic("unaligned pointer to writesw");
57
58	while (len-- > 0)
59		*dst = *src++;
60
61
62}
 
63
64/*  Pretty sure len is pre-adjusted for the length of the access already */
65void __raw_readsl(const void __iomem *addr, void *data, int len)
66{
67	const volatile long *src = (long *) addr;
68	long *dst = (long *) data;
69
70	if ((u32)data & 0x3)
71		panic("unaligned pointer to readsl");
72
73	while (len-- > 0)
74		*dst++ = *src;
75
76
77}
 
78
79void __raw_writesl(void __iomem *addr, const void *data, int len)
80{
81	const long *src = (long *)data;
82	volatile long *dst = (long *)addr;
83
84	if ((u32)data & 0x3)
85		panic("unaligned pointer to writesl");
86
87	while (len-- > 0)
88		*dst = *src++;
89
90
91}

 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);