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