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54 pj 1
#include <stdint.h>
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#include "ll/sys/cdefs.h"
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__BEGIN_DECLS
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#ifndef __alpha__
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#define v_readb(addr) (*(volatile uint8_t *) (MMIO_POINTER+(addr)))
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#define v_readw(addr) (*(volatile uint16_t *) (MMIO_POINTER+(addr)))
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#define v_readl(addr) (*(volatile uint32_t *) (MMIO_POINTER+(addr)))
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#define v_writeb(b,addr) (*(volatile uint8_t *) (MMIO_POINTER+(addr)) = (b))
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#define v_writew(b,addr) (*(volatile uint16_t *) (MMIO_POINTER+(addr)) = (b))
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#define v_writel(b,addr) (*(volatile uint32_t *) (MMIO_POINTER+(addr)) = (b))
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#else
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#define vip     volatile int *
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#define vuip    volatile unsigned int *
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#define vulp    volatile unsigned long *
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#define mb() \
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__asm__ __volatile__("mb": : :"memory")
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#define __kernel_extbl(val, shift)                                      \
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  ({ unsigned long __kir;                                               \
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     __asm__("extbl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val));   \
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     __kir; })
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#define __kernel_extwl(val, shift)                                      \
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  ({ unsigned long __kir;                                               \
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     __asm__("extwl %2,%1,%0" : "=r"(__kir) : "rI"(shift), "r"(val));   \
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     __kir; })
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static inline uint8_t v_readb(unsigned long addr)
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{
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        unsigned long result;
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        result = *(vip) ((addr << 5) + SPARSE_MMIO + 0x00);
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        return __kernel_extbl(result, addr & 3);
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}
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static inline uint16_t v_readw(unsigned long addr)
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{
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        unsigned long result;
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        result = *(vip) ((addr << 5) + SPARSE_MMIO + 0x08);
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        return __kernel_extwl(result, addr & 3);
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}
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static inline uint32_t v_readl(unsigned long addr)
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{
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        return *(vuip) ((addr << 5) + SPARSE_MMIO + 0x18);
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}
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static inline void v_writeb(uint8_t b, unsigned long addr)
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{
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        *(vuip) ((addr << 5) + SPARSE_MMIO + 0x00) = b * 0x01010101;
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        mb();
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}
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static inline void v_writew(uint16_t b, unsigned long addr)
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{
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        *(vuip) ((addr << 5) + SPARSE_MMIO + 0x08) = b * 0x00010001;
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        mb();
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}
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static inline void v_writel(uint32_t b, unsigned long addr)
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{
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        *(vuip) ((addr << 5) + SPARSE_MMIO + 0x18) = b;
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        mb();
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}
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__END_DECLS
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#endif /* __alpha__ */