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
 11unsigned int ioread8(void __iomem *addr)
 12{
 13	return readb(addr);
 14}
 15EXPORT_SYMBOL(ioread8);
 16
 17unsigned int ioread16(void __iomem *addr)
 18{
 19	return readw(addr);
 20}
 21EXPORT_SYMBOL(ioread16);
 22
 23unsigned int ioread16be(void __iomem *addr)
 24{
 25	return be16_to_cpu(__raw_readw(addr));
 26}
 27EXPORT_SYMBOL(ioread16be);
 28
 29unsigned int ioread32(void __iomem *addr)
 30{
 31	return readl(addr);
 32}
 33EXPORT_SYMBOL(ioread32);
 34
 35unsigned int ioread32be(void __iomem *addr)
 36{
 37	return be32_to_cpu(__raw_readl(addr));
 38}
 39EXPORT_SYMBOL(ioread32be);
 40
 41void iowrite8(u8 val, void __iomem *addr)
 42{
 43	writeb(val, addr);
 44}
 45EXPORT_SYMBOL(iowrite8);
 46
 47void iowrite16(u16 val, void __iomem *addr)
 48{
 49	writew(val, addr);
 50}
 51EXPORT_SYMBOL(iowrite16);
 52
 53void iowrite16be(u16 val, void __iomem *addr)
 54{
 55	__raw_writew(cpu_to_be16(val), addr);
 56}
 57EXPORT_SYMBOL(iowrite16be);
 58
 59void iowrite32(u32 val, void __iomem *addr)
 60{
 61	writel(val, addr);
 62}
 63EXPORT_SYMBOL(iowrite32);
 64
 65void iowrite32be(u32 val, void __iomem *addr)
 66{
 67	__raw_writel(cpu_to_be32(val), addr);
 68}
 69EXPORT_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 */
 77static inline void mmio_insb(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
 86static inline void mmio_insw(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
 95static inline void mmio_insl(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
104static 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
112static 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
120static 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
128void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
129{
130	mmio_insb(addr, dst, count);
131}
132EXPORT_SYMBOL(ioread8_rep);
133
134void ioread16_rep(void __iomem *addr, void *dst, unsigned long count)
135{
136	mmio_insw(addr, dst, count);
137}
138EXPORT_SYMBOL(ioread16_rep);
139
140void ioread32_rep(void __iomem *addr, void *dst, unsigned long count)
141{
142	mmio_insl(addr, dst, count);
143}
144EXPORT_SYMBOL(ioread32_rep);
145
146void iowrite8_rep(void __iomem *addr, const void *src, unsigned long count)
147{
148	mmio_outsb(addr, src, count);
149}
150EXPORT_SYMBOL(iowrite8_rep);
151
152void iowrite16_rep(void __iomem *addr, const void *src, unsigned long count)
153{
154	mmio_outsw(addr, src, count);
155}
156EXPORT_SYMBOL(iowrite16_rep);
157
158void iowrite32_rep(void __iomem *addr, const void *src, unsigned long count)
159{
160	mmio_outsl(addr, src, count);
161}
162EXPORT_SYMBOL(iowrite32_rep);