1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * arch/sh/kernel/iomap.c
4 *
5 * Copyright (C) 2000 Niibe Yutaka
6 * Copyright (C) 2005 - 2007 Paul Mundt
7 */
8 #include <linux/module.h>
9 #include <linux/io.h>
10
11 unsigned int ioread8(const void __iomem *addr)
12 {
13 return readb(addr);
14 }
15 EXPORT_SYMBOL(ioread8);
16
17 unsigned int ioread16(const void __iomem *addr)
18 {
19 return readw(addr);
20 }
21 EXPORT_SYMBOL(ioread16);
22
23 unsigned int ioread16be(const void __iomem *addr)
24 {
25 return be16_to_cpu(__raw_readw(addr));
26 }
27 EXPORT_SYMBOL(ioread16be);
28
29 unsigned int ioread32(const void __iomem *addr)
30 {
31 return readl(addr);
32 }
33 EXPORT_SYMBOL(ioread32);
34
35 unsigned int ioread32be(const void __iomem *addr)
36 {
37 return be32_to_cpu(__raw_readl(addr));
38 }
39 EXPORT_SYMBOL(ioread32be);
40
41 void iowrite8(u8 val, void __iomem *addr)
42 {
43 writeb(val, addr);
44 }
45 EXPORT_SYMBOL(iowrite8);
46
47 void iowrite16(u16 val, void __iomem *addr)
48 {
49 writew(val, addr);
50 }
51 EXPORT_SYMBOL(iowrite16);
52
53 void iowrite16be(u16 val, void __iomem *addr)
54 {
55 __raw_writew(cpu_to_be16(val), addr);
56 }
57 EXPORT_SYMBOL(iowrite16be);
58
59 void iowrite32(u32 val, void __iomem *addr)
60 {
61 writel(val, addr);
62 }
63 EXPORT_SYMBOL(iowrite32);
64
65 void iowrite32be(u32 val, void __iomem *addr)
66 {
67 __raw_writel(cpu_to_be32(val), addr);
68 }
69 EXPORT_SYMBOL(iowrite32be);
70
71 /*
72 * These are the "repeat MMIO read/write" functions.
73 * Note the "__raw" accesses, since we don't want to
74 * convert to CPU byte order. We write in "IO byte
75 * order" (we also don't have IO barriers).
76 */
77 static inline void mmio_insb(const void __iomem *addr, u8 *dst, int count)
78 {
79 while (--count >= 0) {
80 u8 data = __raw_readb(addr);
81 *dst = data;
82 dst++;
83 }
84 }
85
86 static inline void mmio_insw(const void __iomem *addr, u16 *dst, int count)
87 {
88 while (--count >= 0) {
89 u16 data = __raw_readw(addr);
90 *dst = data;
91 dst++;
92 }
93 }
94
95 static inline void mmio_insl(const void __iomem *addr, u32 *dst, int count)
96 {
97 while (--count >= 0) {
98 u32 data = __raw_readl(addr);
99 *dst = data;
100 dst++;
101 }
102 }
103
104 static inline void mmio_outsb(void __iomem *addr, const u8 *src, int count)
105 {
106 while (--count >= 0) {
107 __raw_writeb(*src, addr);
108 src++;
109 }
110 }
111
112 static inline void mmio_outsw(void __iomem *addr, const u16 *src, int count)
113 {
114 while (--count >= 0) {
115 __raw_writew(*src, addr);
116 src++;
117 }
118 }
119
120 static inline void mmio_outsl(void __iomem *addr, const u32 *src, int count)
121 {
122 while (--count >= 0) {
123 __raw_writel(*src, addr);
124 src++;
125 }
126 }
127
128 void ioread8_rep(const void __iomem *addr, void *dst, unsigned long count)
129 {
130 mmio_insb(addr, dst, count);
131 }
132 EXPORT_SYMBOL(ioread8_rep);
133
134 void ioread16_rep(const void __iomem *addr, void *dst, unsigned long count)
135 {
136 mmio_insw(addr, dst, count);
137 }
138 EXPORT_SYMBOL(ioread16_rep);
139
140 void ioread32_rep(const void __iomem *addr, void *dst, unsigned long count)
141 {
142 mmio_insl(addr, dst, count);
143 }
144 EXPORT_SYMBOL(ioread32_rep);
145
146 void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
147 {
148 mmio_outsb(addr, src, count);
149 }
150 EXPORT_SYMBOL(iowrite8_rep);
151
152 void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
153 {
154 mmio_outsw(addr, src, count);
155 }
156 EXPORT_SYMBOL(iowrite16_rep);
157
158 void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
159 {
160 mmio_outsl(addr, src, count);
161 }
162 EXPORT_SYMBOL(iowrite32_rep);
163
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