target/linux/coldfire/files-2.6.31/arch/m68k/include/asm/cf_io.h

   1 /*
   2  * linux/include/asm-m68k/cf_io.h
   3  *
   4  * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved.
   5  * 9/30/08 JKM - Separated Coldfire pieces out from m68k.
   6  */
   7
   8 #ifndef __CF_IO__
   9 #define __CF_IO__
  10
  11 #ifdef __KERNEL__
  12
  13 #include <linux/compiler.h>
  14 #include <asm/raw_io.h>
  15 #include <asm/virtconvert.h>
  16
  17 #include <asm-generic/iomap.h>
  18
  19 /*
  20  * These should be valid on any ioremap()ed region
  21  */
  22 #define readb(addr)      in_8(addr)
  23 #define writeb(val,addr) out_8((addr),(val))
  24 #define readw(addr)      in_le16(addr)
  25 #define writew(val,addr) out_le16((addr),(val))
  26 #define readl(addr)      in_le32(addr)
  27 #define writel(val,addr) out_le32((addr),(val))
  28
  29 #define readb_relaxed(addr) readb(addr)
  30 #define readw_relaxed(addr) readw(addr)
  31 #define readl_relaxed(addr) readl(addr)
  32
  33 #ifdef CONFIG_PCI
  34
  35 /*
  36  * IO space in Coldfire
  37  */
  38 /*#define HAVE_ARCH_PIO_SIZE    1
  39 #define PIO_OFFSET              0x00000000UL
  40 #define PIO_RESERVED            0x100000000UL
  41 #define PIO_MASK                (PIO_RESERVED - 1)
  42 */
  43 #define inb_p   inb
  44 #define inw_p   inw
  45 #define inl_p   inl
  46 #define outb_p  outb
  47 #define outw_p  outw
  48 #define outl_p  outl
  49
  50 #ifndef CONFIG_COLDFIRE
  51 #define inb(port)      in_8(port)
  52 #define outb(val,port) out_8((port),(val))
  53 #define inw(port)      in_le16(port)
  54 #define outw(val,port) out_le16((port),(val))
  55 #define inl(port)      in_le32(port)
  56 #define outl(val,port) out_le32((port),(val))
  57 #define insb(port, buf, nr)     \
  58                 raw_insb((u8 *)(port), (u8 *)(buf), (nr))
  59 #define outsb(port, buf, nr)    \
  60                 raw_outsb((u8 *)(port), (u8 *)(buf), (nr))
  61 #define insw(port, buf, nr)     \
  62                 raw_insw_swapw((u16 *)(port), (u16 *)(buf), (nr))
  63 #define outsw(port, buf, nr)    \
  64                 raw_outsw_swapw((u16 *)(port), (u16 *)(buf), (nr))
  65 #define insl(port, buf, nr)     \
  66                 raw_insw_swapw((u16 *)(port), (u16 *)(buf), (nr)<<1)
  67 #define outsl(port, buf, nr)    \
  68                 raw_outsw_swapw((u16 *)(port), (u16 *)(buf), (nr)<<1)
  69 #else
  70 #define inb(port)      pci_inb(port)
  71 #define outb(val, port) pci_outb((val), (port))
  72 #define inw(port)      pci_inw(port)
  73 #define outw(val, port) pci_outw((val), (port))
  74 #define insb(a, b, c)  \
  75         pci_insb((volatile unsigned char *)a, (unsigned char *)b, c)
  76 #define insw(a, b, c)  \
  77         pci_insw((volatile unsigned short *)a, (const unsigned short *)b, c)
  78 #define insl(a, b, c)  \
  79         pci_insl((volatile unsigned long *)a, (const unsigned long *)b, c)
  80 #define outsb(a, b, c) \
  81         pci_outsb((volatile unsigned char *)a, (const unsigned char *)b, c)
  82 #define outsw(a, b, c) \
  83         pci_outsw((volatile unsigned short *)a, (const unsigned short *)b, c)
  84 #define outsl(a, b, c) \
  85         pci_outsl((volatile unsigned long *)a, (const unsigned long *)b, c)
  86 #define inl(port)        pci_inl(port)
  87 #define outl(val, port)   pci_outl((val), (port))
  88 #endif
  89
  90 #else
  91 /* no pci */
  92
  93 #define inb(port)      in_8(port)
  94 #define outb(val, port) out_8((port), (val))
  95 #define inw(port)      in_le16(port)
  96 #define outw(val, port) out_le16((port), (val))
  97 #define inl(port)      in_le32(port)
  98 #define outl(val, port) out_le32((port), (val))
  99 #define insb(port, buf, nr)     \
 100                 raw_insb((u8 *)(port), (u8 *)(buf), (nr))
 101 #define outsb(port, buf, nr)    \
 102                 raw_outsb((u8 *)(port), (u8 *)(buf), (nr))
 103 #define insw(port, buf, nr)     \
 104                 raw_insw_swapw((u16 *)(port), (u16 *)(buf), (nr))
 105 #define outsw(port, buf, nr)    \
 106                 raw_outsw_swapw((u16 *)(port), (u16 *)(buf), (nr))
 107 #define insl(port, buf, nr)     \
 108                 raw_insw_swapw((u16 *)(port), (u16 *)(buf), (nr)<<1)
 109 #define outsl(port, buf, nr)    \
 110                 raw_outsw_swapw((u16 *)(port), (u16 *)(buf), (nr)<<1)
 111
 112 #endif /* CONFIG_PCI */
 113
 114 #define mmiowb()
 115
 116 static inline void __iomem *ioremap(unsigned long physaddr, unsigned long size)
 117 {
 118         return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
 119 }
 120 static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned long size)
 121 {
 122         return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
 123 }
 124 static inline void __iomem *ioremap_writethrough(unsigned long physaddr,
 125                                          unsigned long size)
 126 {
 127         return __ioremap(physaddr, size, IOMAP_WRITETHROUGH);
 128 }
 129 static inline void __iomem *ioremap_fullcache(unsigned long physaddr,
 130                                       unsigned long size)
 131 {
 132         return __ioremap(physaddr, size, IOMAP_FULL_CACHING);
 133 }
 134
 135 static inline void memset_io(volatile void __iomem *addr, unsigned char val, int count)
 136 {
 137         __builtin_memset((void __force *) addr, val, count);
 138 }
 139 static inline void memcpy_fromio(void *dst, const volatile void __iomem *src, int count)
 140 {
 141         __builtin_memcpy(dst, (void __force *) src, count);
 142 }
 143 static inline void memcpy_toio(volatile void __iomem *dst, const void *src, int count)
 144 {
 145         __builtin_memcpy((void __force *) dst, src, count);
 146 }
 147
 148 #define IO_SPACE_LIMIT 0xffffffff
 149
 150 #endif /* __KERNEL__ */
 151
 152 #define __ARCH_HAS_NO_PAGE_ZERO_MAPPED          1
 153
 154 /*
 155  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
 156  * access
 157  */
 158 #define xlate_dev_mem_ptr(p)    __va(p)
 159
 160 /*
 161  * Convert a virtual cached pointer to an uncached pointer
 162  */
 163 #define xlate_dev_kmem_ptr(p)   p
 164
 165 #define __raw_readb(addr) \
 166     ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
 167 #define __raw_readw(addr) \
 168     ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
 169 #define __raw_readl(addr) \
 170     ({ unsigned long __v = (*(volatile unsigned long *) (addr)); __v; })
 171 #define __raw_writeb(b,addr) (void)((*(volatile unsigned char *) (addr)) = (b))
 172 #define __raw_writew(b,addr) (void)((*(volatile unsigned short *) (addr)) = (b))
 173 #define __raw_writel(b,addr) (void)((*(volatile unsigned int *) (addr)) = (b))
 174
 175 #define memset_io(a, b, c) memset((void *)(a), (b), (c))
 176 #define memcpy_fromio(a, b, c) memcpy((a), (void *)(b), (c))
 177 #define memcpy_toio(a, b, c) memcpy((void *)(a), (b), (c))
 178
 179 #if !defined(readb)
 180 #define readb(addr) \
 181     ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
 182 #define readw(addr) \
 183     ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
 184 #define readl(addr) \
 185     ({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
 186 #define writeb(b, addr) (void)((*(volatile unsigned char *) (addr)) = (b))
 187 #define writew(b, addr) (void)((*(volatile unsigned short *) (addr)) = (b))
 188 #define writel(b, addr) (void)((*(volatile unsigned int *) (addr)) = (b))
 189 #endif /* readb */
 190
 191 #endif /* _IO_H */