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 */
18 void __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 }
30 EXPORT_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 */
38 void __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 }
51 EXPORT_SYMBOL(__raw_writesw);
52
53 /* Pretty sure len is pre-adjusted for the length of the access already */
54 void __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 }
67 EXPORT_SYMBOL(__raw_readsl);
68
69 void __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 }
82 EXPORT_SYMBOL(__raw_writesl);
83
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