2 * arch/sh/kernel/iomap.c
4 * Copyright (C) 2000 Niibe Yutaka
5 * Copyright (C) 2005 - 2007 Paul Mundt
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file "COPYING" in the main directory of this archive
11 #include <linux/module.h>
14 unsigned int ioread8(void __iomem *addr)
18 EXPORT_SYMBOL(ioread8);
20 unsigned int ioread16(void __iomem *addr)
24 EXPORT_SYMBOL(ioread16);
26 unsigned int ioread16be(void __iomem *addr)
28 return be16_to_cpu(__raw_readw(addr));
30 EXPORT_SYMBOL(ioread16be);
32 unsigned int ioread32(void __iomem *addr)
36 EXPORT_SYMBOL(ioread32);
38 unsigned int ioread32be(void __iomem *addr)
40 return be32_to_cpu(__raw_readl(addr));
42 EXPORT_SYMBOL(ioread32be);
44 void iowrite8(u8 val, void __iomem *addr)
48 EXPORT_SYMBOL(iowrite8);
50 void iowrite16(u16 val, void __iomem *addr)
54 EXPORT_SYMBOL(iowrite16);
56 void iowrite16be(u16 val, void __iomem *addr)
58 __raw_writew(cpu_to_be16(val), addr);
60 EXPORT_SYMBOL(iowrite16be);
62 void iowrite32(u32 val, void __iomem *addr)
66 EXPORT_SYMBOL(iowrite32);
68 void iowrite32be(u32 val, void __iomem *addr)
70 __raw_writel(cpu_to_be32(val), addr);
72 EXPORT_SYMBOL(iowrite32be);
75 * These are the "repeat MMIO read/write" functions.
76 * Note the "__raw" accesses, since we don't want to
77 * convert to CPU byte order. We write in "IO byte
78 * order" (we also don't have IO barriers).
80 static inline void mmio_insb(void __iomem *addr, u8 *dst, int count)
82 while (--count >= 0) {
83 u8 data = __raw_readb(addr);
89 static inline void mmio_insw(void __iomem *addr, u16 *dst, int count)
91 while (--count >= 0) {
92 u16 data = __raw_readw(addr);
98 static inline void mmio_insl(void __iomem *addr, u32 *dst, int count)
100 while (--count >= 0) {
101 u32 data = __raw_readl(addr);
107 static inline void mmio_outsb(void __iomem *addr, const u8 *src, int count)
109 while (--count >= 0) {
110 __raw_writeb(*src, addr);
115 static inline void mmio_outsw(void __iomem *addr, const u16 *src, int count)
117 while (--count >= 0) {
118 __raw_writew(*src, addr);
123 static inline void mmio_outsl(void __iomem *addr, const u32 *src, int count)
125 while (--count >= 0) {
126 __raw_writel(*src, addr);
131 void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
133 mmio_insb(addr, dst, count);
135 EXPORT_SYMBOL(ioread8_rep);
137 void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
139 mmio_insw(addr, dst, count);
141 EXPORT_SYMBOL(ioread16_rep);
143 void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
145 mmio_insl(addr, dst, count);
147 EXPORT_SYMBOL(ioread32_rep);
149 void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
151 mmio_outsb(addr, src, count);
153 EXPORT_SYMBOL(iowrite8_rep);
155 void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
157 mmio_outsw(addr, src, count);
159 EXPORT_SYMBOL(iowrite16_rep);
161 void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
163 mmio_outsl(addr, src, count);
165 EXPORT_SYMBOL(iowrite32_rep);