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TOMOYO Linux Cross Reference
Linux/arch/blackfin/include/asm/io.h

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  1 /*
  2  * Copyright 2004-2010 Analog Devices Inc.
  3  *
  4  * Licensed under the GPL-2 or later.
  5  */
  6 
  7 #ifndef _BFIN_IO_H
  8 #define _BFIN_IO_H
  9 
 10 #include <linux/compiler.h>
 11 #include <linux/types.h>
 12 #include <asm/byteorder.h>
 13 
 14 #define DECLARE_BFIN_RAW_READX(size, type, asm, asm_sign) \
 15 static inline type __raw_read##size(const volatile void __iomem *addr) \
 16 { \
 17         unsigned int val; \
 18         int tmp; \
 19         __asm__ __volatile__ ( \
 20                 "cli %1;" \
 21                 "NOP; NOP; SSYNC;" \
 22                 "%0 = "#asm" [%2] "#asm_sign";" \
 23                 "sti %1;" \
 24                 : "=d"(val), "=d"(tmp) \
 25                 : "a"(addr) \
 26         ); \
 27         return (type) val; \
 28 }
 29 DECLARE_BFIN_RAW_READX(b, u8, b, (z))
 30 #define __raw_readb __raw_readb
 31 DECLARE_BFIN_RAW_READX(w, u16, w, (z))
 32 #define __raw_readw __raw_readw
 33 DECLARE_BFIN_RAW_READX(l, u32, , )
 34 #define __raw_readl __raw_readl
 35 
 36 extern void outsb(unsigned long port, const void *addr, unsigned long count);
 37 extern void outsw(unsigned long port, const void *addr, unsigned long count);
 38 extern void outsw_8(unsigned long port, const void *addr, unsigned long count);
 39 extern void outsl(unsigned long port, const void *addr, unsigned long count);
 40 #define outsb outsb
 41 #define outsw outsw
 42 #define outsl outsl
 43 
 44 extern void insb(unsigned long port, void *addr, unsigned long count);
 45 extern void insw(unsigned long port, void *addr, unsigned long count);
 46 extern void insw_8(unsigned long port, void *addr, unsigned long count);
 47 extern void insl(unsigned long port, void *addr, unsigned long count);
 48 extern void insl_16(unsigned long port, void *addr, unsigned long count);
 49 #define insb insb
 50 #define insw insw
 51 #define insl insl
 52 
 53 extern void dma_outsb(unsigned long port, const void *addr, unsigned short count);
 54 extern void dma_outsw(unsigned long port, const void *addr, unsigned short count);
 55 extern void dma_outsl(unsigned long port, const void *addr, unsigned short count);
 56 
 57 extern void dma_insb(unsigned long port, void *addr, unsigned short count);
 58 extern void dma_insw(unsigned long port, void *addr, unsigned short count);
 59 extern void dma_insl(unsigned long port, void *addr, unsigned short count);
 60 
 61 /**
 62  * I/O write barrier
 63  *
 64  * Ensure ordering of I/O space writes. This will make sure that writes
 65  * following the barrier will arrive after all previous writes.
 66  */
 67 #define mmiowb() do { SSYNC(); wmb(); } while (0)
 68 
 69 #include <asm-generic/io.h>
 70 
 71 #endif
 72 

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