readl(), writel()

커널 모듈 소스에서 보다 발견

결론은.. 걍 포인터?

[링크 : http://lxr.free-electrons.com/source/arch/mn10300/include/asm/io.h#L38]

109 #ifndef readb 110 #define readb readb 111 static inline u8 readb(const volatile void __iomem *addr) 112 { 113         return __raw_readb(addr); 114 } 115 #endif 116  117 #ifndef readw 118 #define readw readw 119 static inline u16 readw(const volatile void __iomem *addr) 120 { 121         return __le16_to_cpu(__raw_readw(addr)); 122 } 123 #endif 124  125 #ifndef readl 126 #define readl readl 127 static inline u32 readl(const volatile void __iomem *addr) 128 { 129         return __le32_to_cpu(__raw_readl(addr)); 130 } 131 #endif 132  133 #ifdef CONFIG_64BIT 134 #ifndef readq 135 #define readq readq 136 static inline u64 readq(const volatile void __iomem *addr) 137 { 138         return __le64_to_cpu(__raw_readq(addr)); 139 } 140 #endif 141 #endif /* CONFIG_64BIT */ 142  143 #ifndef writeb 144 #define writeb writeb 145 static inline void writeb(u8 value, volatile void __iomem *addr) 146 { 147         __raw_writeb(value, addr); 148 } 149 #endif 150  151 #ifndef writew 152 #define writew writew 153 static inline void writew(u16 value, volatile void __iomem *addr) 154 { 155         __raw_writew(cpu_to_le16(value), addr); 156 } 157 #endif 158  159 #ifndef writel 160 #define writel writel 161 static inline void writel(u32 value, volatile void __iomem *addr) 162 { 163         __raw_writel(__cpu_to_le32(value), addr); 164 } 165 #endif 166  167 #ifdef CONFIG_64BIT 168 #ifndef writeq 169 #define writeq writeq 170 static inline void writeq(u64 value, volatile void __iomem *addr) 171 { 172         __raw_writeq(__cpu_to_le64(value), addr); 173 } 174 #endif 175 #endif /* CONFIG_64BIT */ [링크 : http://lxr.free-electrons.com/source/include/asm-generic/io.h#L127]