arch/m32r/kernel/io_oaks32r.c

   1 /*
   2  *  linux/arch/m32r/kernel/io_oaks32r.c
   3  *
   4  *  Typical I/O routines for OAKS32R board.
   5  *
   6  *  Copyright (c) 2001-2004  Hiroyuki Kondo, Hirokazu Takata,
   7  *                           Hitoshi Yamamoto, Mamoru Sakugawa
   8  */
   9
  10 #include <linux/config.h>
  11 #include <asm/m32r.h>
  12 #include <asm/page.h>
  13 #include <asm/io.h>
  14
  15 #define PORT2ADDR(port)  _port2addr(port)
  16
  17 static inline void *_port2addr(unsigned long port)
  18 {
  19         return (void *)(port + NONCACHE_OFFSET);
  20 }
  21
  22 static inline  void *_port2addr_ne(unsigned long port)
  23 {
  24         return (void *)((port<<1) + NONCACHE_OFFSET + 0x02000000);
  25 }
  26
  27 static inline void delay(void)
  28 {
  29         __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
  30 }
  31
  32 /*
  33  * NIC I/O function
  34  */
  35
  36 #define PORT2ADDR_NE(port)  _port2addr_ne(port)
  37
  38 static inline unsigned char _ne_inb(void *portp)
  39 {
  40         return *(volatile unsigned char *)(portp+1);
  41 }
  42
  43 static inline unsigned short _ne_inw(void *portp)
  44 {
  45         unsigned short tmp;
  46
  47         tmp = *(unsigned short *)(portp) & 0xff;
  48         tmp |= *(unsigned short *)(portp+2) << 8;
  49         return tmp;
  50 }
  51
  52 static inline  void _ne_insb(void *portp, void *addr, unsigned long count)
  53 {
  54         unsigned char *buf = addr;
  55         while (count--)
  56                 *buf++ = *(volatile unsigned char *)(portp+1);
  57 }
  58
  59 static inline void _ne_outb(unsigned char b, void *portp)
  60 {
  61         *(volatile unsigned char *)(portp+1) = b;
  62 }
  63
  64 static inline void _ne_outw(unsigned short w, void *portp)
  65 {
  66         *(volatile unsigned short *)portp =  (w >> 8);
  67         *(volatile unsigned short *)(portp+2) =  (w & 0xff);
  68 }
  69
  70 unsigned char _inb(unsigned long port)
  71 {
  72         if (port >= 0x300 && port < 0x320)
  73                 return _ne_inb(PORT2ADDR_NE(port));
  74
  75         return *(volatile unsigned char *)PORT2ADDR(port);
  76 }
  77
  78 unsigned short _inw(unsigned long port)
  79 {
  80         if (port >= 0x300 && port < 0x320)
  81                 return _ne_inw(PORT2ADDR_NE(port));
  82
  83         return *(volatile unsigned short *)PORT2ADDR(port);
  84 }
  85
  86 unsigned long _inl(unsigned long port)
  87 {
  88         return *(volatile unsigned long *)PORT2ADDR(port);
  89 }
  90
  91 unsigned char _inb_p(unsigned long port)
  92 {
  93         unsigned char  v;
  94
  95         if (port >= 0x300 && port < 0x320)
  96                 v = _ne_inb(PORT2ADDR_NE(port));
  97         else
  98                 v = *(volatile unsigned char *)PORT2ADDR(port);
  99
 100         delay();
 101         return (v);
 102 }
 103
 104 unsigned short _inw_p(unsigned long port)
 105 {
 106         unsigned short  v;
 107
 108         if (port >= 0x300 && port < 0x320)
 109                 v = _ne_inw(PORT2ADDR_NE(port));
 110         else
 111                 v = *(volatile unsigned short *)PORT2ADDR(port);
 112
 113         delay();
 114         return (v);
 115 }
 116
 117 unsigned long _inl_p(unsigned long port)
 118 {
 119         unsigned long  v;
 120
 121         v = *(volatile unsigned long *)PORT2ADDR(port);
 122         delay();
 123         return (v);
 124 }
 125
 126 void _outb(unsigned char b, unsigned long port)
 127 {
 128         if (port >= 0x300 && port < 0x320)
 129                 _ne_outb(b, PORT2ADDR_NE(port));
 130         else
 131                 *(volatile unsigned char *)PORT2ADDR(port) = b;
 132 }
 133
 134 void _outw(unsigned short w, unsigned long port)
 135 {
 136         if (port >= 0x300 && port < 0x320)
 137                 _ne_outw(w, PORT2ADDR_NE(port));
 138         else
 139                 *(volatile unsigned short *)PORT2ADDR(port) = w;
 140 }
 141
 142 void _outl(unsigned long l, unsigned long port)
 143 {
 144         *(volatile unsigned long *)PORT2ADDR(port) = l;
 145 }
 146
 147 void _outb_p(unsigned char b, unsigned long port)
 148 {
 149         if (port >= 0x300 && port < 0x320)
 150                 _ne_outb(b, PORT2ADDR_NE(port));
 151         else
 152                 *(volatile unsigned char *)PORT2ADDR(port) = b;
 153
 154         delay();
 155 }
 156
 157 void _outw_p(unsigned short w, unsigned long port)
 158 {
 159         if (port >= 0x300 && port < 0x320)
 160                 _ne_outw(w, PORT2ADDR_NE(port));
 161         else
 162                 *(volatile unsigned short *)PORT2ADDR(port) = w;
 163
 164         delay();
 165 }
 166
 167 void _outl_p(unsigned long l, unsigned long port)
 168 {
 169         *(volatile unsigned long *)PORT2ADDR(port) = l;
 170         delay();
 171 }
 172
 173 void _insb(unsigned int port, void *addr, unsigned long count)
 174 {
 175         if (port >= 0x300 && port < 0x320)
 176                 _ne_insb(PORT2ADDR_NE(port), addr, count);
 177         else {
 178                 unsigned char *buf = addr;
 179                 unsigned char *portp = PORT2ADDR(port);
 180                 while (count--)
 181                         *buf++ = *(volatile unsigned char *)portp;
 182         }
 183 }
 184
 185 void _insw(unsigned int port, void *addr, unsigned long count)
 186 {
 187         unsigned short *buf = addr;
 188         unsigned short *portp;
 189
 190         if (port >= 0x300 && port < 0x320) {
 191                 portp = PORT2ADDR_NE(port);
 192                 while (count--)
 193                         *buf++ = _ne_inw(portp);
 194         } else {
 195                 portp = PORT2ADDR(port);
 196                 while (count--)
 197                         *buf++ = *(volatile unsigned short *)portp;
 198         }
 199 }
 200
 201 void _insl(unsigned int port, void *addr, unsigned long count)
 202 {
 203         unsigned long *buf = addr;
 204         unsigned long *portp;
 205
 206         portp = PORT2ADDR(port);
 207         while (count--)
 208                 *buf++ = *(volatile unsigned long *)portp;
 209 }
 210
 211 void _outsb(unsigned int port, const void *addr, unsigned long count)
 212 {
 213         const unsigned char *buf = addr;
 214         unsigned char *portp;
 215
 216         if (port >= 0x300 && port < 0x320) {
 217                 portp = PORT2ADDR_NE(port);
 218                 while (count--)
 219                         _ne_outb(*buf++, portp);
 220         } else {
 221                 portp = PORT2ADDR(port);
 222                 while (count--)
 223                         *(volatile unsigned char *)portp = *buf++;
 224         }
 225 }
 226
 227 void _outsw(unsigned int port, const void *addr, unsigned long count)
 228 {
 229         const unsigned short *buf = addr;
 230         unsigned short *portp;
 231
 232         if (port >= 0x300 && port < 0x320) {
 233                 portp = PORT2ADDR_NE(port);
 234                 while (count--)
 235                         _ne_outw(*buf++, portp);
 236         } else {
 237                 portp = PORT2ADDR(port);
 238                 while (count--)
 239                         *(volatile unsigned short *)portp = *buf++;
 240         }
 241 }
 242
 243 void _outsl(unsigned int port, const void *addr, unsigned long count)
 244 {
 245         const unsigned long *buf = addr;
 246         unsigned char *portp;
 247
 248         portp = PORT2ADDR(port);
 249         while (count--)
 250                 *(volatile unsigned long *)portp = *buf++;
 251 }