arch/blackfin/include/asm/io.h

   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