include/asm-v850/io.h

   1 /*
   2  * include/asm-v850/io.h -- Misc I/O operations
   3  *
   4  *  Copyright (C) 2001,02,03,04,05  NEC Electronics Corporation
   5  *  Copyright (C) 2001,02,03,04,05  Miles Bader <miles@gnu.org>
   6  *
   7  * This file is subject to the terms and conditions of the GNU General
   8  * Public License.  See the file COPYING in the main directory of this
   9  * archive for more details.
  10  *
  11  * Written by Miles Bader <miles@gnu.org>
  12  */
  13
  14 #ifndef __V850_IO_H__
  15 #define __V850_IO_H__
  16
  17 #define IO_SPACE_LIMIT 0xFFFFFFFF
  18
  19 #define readb(addr) \
  20   ({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
  21 #define readw(addr) \
  22   ({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
  23 #define readl(addr) \
  24   ({ unsigned long __v = (*(volatile unsigned long *) (addr)); __v; })
  25
  26 #define readb_relaxed(a) readb(a)
  27 #define readw_relaxed(a) readw(a)
  28 #define readl_relaxed(a) readl(a)
  29
  30 #define writeb(val, addr) \
  31   (void)((*(volatile unsigned char *) (addr)) = (val))
  32 #define writew(val, addr) \
  33   (void)((*(volatile unsigned short *) (addr)) = (val))
  34 #define writel(val, addr) \
  35   (void)((*(volatile unsigned int *) (addr)) = (val))
  36
  37 #define __raw_readb readb
  38 #define __raw_readw readw
  39 #define __raw_readl readl
  40 #define __raw_writeb writeb
  41 #define __raw_writew writew
  42 #define __raw_writel writel
  43
  44 #define inb(addr)       readb (addr)
  45 #define inw(addr)       readw (addr)
  46 #define inl(addr)       readl (addr)
  47 #define outb(x, addr)   ((void) writeb (x, addr))
  48 #define outw(x, addr)   ((void) writew (x, addr))
  49 #define outl(x, addr)   ((void) writel (x, addr))
  50
  51 #define inb_p(port)             inb((port))
  52 #define outb_p(val, port)       outb((val), (port))
  53 #define inw_p(port)             inw((port))
  54 #define outw_p(val, port)       outw((val), (port))
  55 #define inl_p(port)             inl((port))
  56 #define outl_p(val, port)       outl((val), (port))
  57
  58 static inline void insb (unsigned long port, void *dst, unsigned long count)
  59 {
  60         unsigned char *p = dst;
  61         while (count--)
  62                 *p++ = inb (port);
  63 }
  64 static inline void insw (unsigned long port, void *dst, unsigned long count)
  65 {
  66         unsigned short *p = dst;
  67         while (count--)
  68                 *p++ = inw (port);
  69 }
  70 static inline void insl (unsigned long port, void *dst, unsigned long count)
  71 {
  72         unsigned long *p = dst;
  73         while (count--)
  74                 *p++ = inl (port);
  75 }
  76
  77 static inline void
  78 outsb (unsigned long port, const void *src, unsigned long count)
  79 {
  80         const unsigned char *p = src;
  81         while (count--)
  82                 outb (*p++, port);
  83 }
  84 static inline void
  85 outsw (unsigned long port, const void *src, unsigned long count)
  86 {
  87         const unsigned short *p = src;
  88         while (count--)
  89                 outw (*p++, port);
  90 }
  91 static inline void
  92 outsl (unsigned long port, const void *src, unsigned long count)
  93 {
  94         const unsigned long *p = src;
  95         while (count--)
  96                 outl (*p++, port);
  97 }
  98
  99
 100 /* Some places try to pass in an loff_t for PHYSADDR (?!), so we cast it to
 101    long before casting it to a pointer to avoid compiler warnings.  */
 102 #define ioremap(physaddr, size) ((void __iomem *)(unsigned long)(physaddr))
 103 #define iounmap(addr)           ((void)0)
 104
 105 #define ioremap_nocache(physaddr, size)         ioremap (physaddr, size)
 106 #define ioremap_writethrough(physaddr, size)    ioremap (physaddr, size)
 107 #define ioremap_fullcache(physaddr, size)       ioremap (physaddr, size)
 108
 109 #define ioread8(addr)           readb (addr)
 110 #define ioread16(addr)          readw (addr)
 111 #define ioread32(addr)          readl (addr)
 112 #define iowrite8(val, addr)     writeb (val, addr)
 113 #define iowrite16(val, addr)    writew (val, addr)
 114 #define iowrite32(val, addr)    writel (val, addr)
 115
 116 #define mmiowb()
 117
 118 #define page_to_phys(page)      ((page - mem_map) << PAGE_SHIFT)
 119 #if 0
 120 /* This is really stupid; don't define it.  */
 121 #define page_to_bus(page)       page_to_phys (page)
 122 #endif
 123
 124 /* Conversion between virtual and physical mappings.  */
 125 #define mm_ptov(addr)           ((void *)__phys_to_virt (addr))
 126 #define mm_vtop(addr)           ((unsigned long)__virt_to_phys (addr))
 127 #define phys_to_virt(addr)      ((void *)__phys_to_virt (addr))
 128 #define virt_to_phys(addr)      ((unsigned long)__virt_to_phys (addr))
 129
 130 #define memcpy_fromio(dst, src, len) memcpy (dst, (void *)src, len)
 131 #define memcpy_toio(dst, src, len) memcpy ((void *)dst, src, len)
 132
 133 /*
 134  * Convert a physical pointer to a virtual kernel pointer for /dev/mem
 135  * access
 136  */
 137 #define xlate_dev_mem_ptr(p)    __va(p)
 138
 139 /*
 140  * Convert a virtual cached pointer to an uncached pointer
 141  */
 142 #define xlate_dev_kmem_ptr(p)   p
 143
 144 #endif /* __V850_IO_H__ */