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(void __iomem *addr) 12 { 13 return readb(addr); 14 } 15 EXPORT_SYMBOL(ioread8); 16 17 unsigned int ioread16(void __iomem *addr) 18 { 19 return readw(addr); 20 } 21 EXPORT_SYMBOL(ioread16); 22 23 unsigned int ioread16be(void __iomem *addr) 24 { 25 return be16_to_cpu(__raw_readw(addr)); 26 } 27 EXPORT_SYMBOL(ioread16be); 28 29 unsigned int ioread32(void __iomem *addr) 30 { 31 return readl(addr); 32 } 33 EXPORT_SYMBOL(ioread32); 34 35 unsigned int ioread32be(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(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(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(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(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(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(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