arch/m32r/platforms/m32104ut/io.c

   1 /*
   2  *  linux/arch/m32r/platforms/m32104ut/io.c
   3  *
   4  *  Typical I/O routines for M32104UT board.
   5  *
   6  *  Copyright (c) 2001-2005  Hiroyuki Kondo, Hirokazu Takata,
   7  *                           Hitoshi Yamamoto, Mamoru Sakugawa,
   8  *                           Naoto Sugai, Hayato Fujiwara
   9  */
  10
  11 #include <asm/m32r.h>
  12 #include <asm/page.h>
  13 #include <asm/io.h>
  14 #include <asm/byteorder.h>
  15
  16 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
  17 #include <linux/types.h>
  18
  19 #define M32R_PCC_IOMAP_SIZE 0x1000
  20
  21 #define M32R_PCC_IOSTART0 0x1000
  22 #define M32R_PCC_IOEND0   (M32R_PCC_IOSTART0 + M32R_PCC_IOMAP_SIZE - 1)
  23
  24 extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
  25 extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
  26 extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
  27 extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
  28 #endif /* CONFIG_PCMCIA && CONFIG_M32R_CFC */
  29
  30 #define PORT2ADDR(port)  _port2addr(port)
  31
  32 static inline void *_port2addr(unsigned long port)
  33 {
  34         return (void *)(port | NONCACHE_OFFSET);
  35 }
  36
  37 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
  38 static inline void *__port2addr_ata(unsigned long port)
  39 {
  40         static int      dummy_reg;
  41
  42         switch (port) {
  43         case 0x1f0:     return (void *)(0x0c002000 | NONCACHE_OFFSET);
  44         case 0x1f1:     return (void *)(0x0c012800 | NONCACHE_OFFSET);
  45         case 0x1f2:     return (void *)(0x0c012002 | NONCACHE_OFFSET);
  46         case 0x1f3:     return (void *)(0x0c012802 | NONCACHE_OFFSET);
  47         case 0x1f4:     return (void *)(0x0c012004 | NONCACHE_OFFSET);
  48         case 0x1f5:     return (void *)(0x0c012804 | NONCACHE_OFFSET);
  49         case 0x1f6:     return (void *)(0x0c012006 | NONCACHE_OFFSET);
  50         case 0x1f7:     return (void *)(0x0c012806 | NONCACHE_OFFSET);
  51         case 0x3f6:     return (void *)(0x0c01200e | NONCACHE_OFFSET);
  52         default:        return (void *)&dummy_reg;
  53         }
  54 }
  55 #endif
  56
  57 /*
  58  * M32104T-LAN is located in the extended bus space
  59  * from 0x01000000 to 0x01ffffff on physical address.
  60  * The base address of LAN controller(LAN91C111) is 0x300.
  61  */
  62 #define LAN_IOSTART     (0x300 | NONCACHE_OFFSET)
  63 #define LAN_IOEND       (0x320 | NONCACHE_OFFSET)
  64 static inline void *_port2addr_ne(unsigned long port)
  65 {
  66         return (void *)(port + NONCACHE_OFFSET + 0x01000000);
  67 }
  68
  69 static inline void delay(void)
  70 {
  71         __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
  72 }
  73
  74 /*
  75  * NIC I/O function
  76  */
  77
  78 #define PORT2ADDR_NE(port)  _port2addr_ne(port)
  79
  80 static inline unsigned char _ne_inb(void *portp)
  81 {
  82         return *(volatile unsigned char *)portp;
  83 }
  84
  85 static inline unsigned short _ne_inw(void *portp)
  86 {
  87         return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
  88 }
  89
  90 static inline void _ne_insb(void *portp, void *addr, unsigned long count)
  91 {
  92         unsigned char *buf = (unsigned char *)addr;
  93
  94         while (count--)
  95                 *buf++ = _ne_inb(portp);
  96 }
  97
  98 static inline void _ne_outb(unsigned char b, void *portp)
  99 {
 100         *(volatile unsigned char *)portp = b;
 101 }
 102
 103 static inline void _ne_outw(unsigned short w, void *portp)
 104 {
 105         *(volatile unsigned short *)portp = cpu_to_le16(w);
 106 }
 107
 108 unsigned char _inb(unsigned long port)
 109 {
 110         if (port >= LAN_IOSTART && port < LAN_IOEND)
 111                 return _ne_inb(PORT2ADDR_NE(port));
 112
 113         return *(volatile unsigned char *)PORT2ADDR(port);
 114 }
 115
 116 unsigned short _inw(unsigned long port)
 117 {
 118         if (port >= LAN_IOSTART && port < LAN_IOEND)
 119                 return _ne_inw(PORT2ADDR_NE(port));
 120
 121         return *(volatile unsigned short *)PORT2ADDR(port);
 122 }
 123
 124 unsigned long _inl(unsigned long port)
 125 {
 126         return *(volatile unsigned long *)PORT2ADDR(port);
 127 }
 128
 129 unsigned char _inb_p(unsigned long port)
 130 {
 131         unsigned char v = _inb(port);
 132         delay();
 133         return (v);
 134 }
 135
 136 unsigned short _inw_p(unsigned long port)
 137 {
 138         unsigned short v = _inw(port);
 139         delay();
 140         return (v);
 141 }
 142
 143 unsigned long _inl_p(unsigned long port)
 144 {
 145         unsigned long v = _inl(port);
 146         delay();
 147         return (v);
 148 }
 149
 150 void _outb(unsigned char b, unsigned long port)
 151 {
 152         if (port >= LAN_IOSTART && port < LAN_IOEND)
 153                 _ne_outb(b, PORT2ADDR_NE(port));
 154         else
 155                 *(volatile unsigned char *)PORT2ADDR(port) = b;
 156 }
 157
 158 void _outw(unsigned short w, unsigned long port)
 159 {
 160         if (port >= LAN_IOSTART && port < LAN_IOEND)
 161                 _ne_outw(w, PORT2ADDR_NE(port));
 162         else
 163                 *(volatile unsigned short *)PORT2ADDR(port) = w;
 164 }
 165
 166 void _outl(unsigned long l, unsigned long port)
 167 {
 168         *(volatile unsigned long *)PORT2ADDR(port) = l;
 169 }
 170
 171 void _outb_p(unsigned char b, unsigned long port)
 172 {
 173         _outb(b, port);
 174         delay();
 175 }
 176
 177 void _outw_p(unsigned short w, unsigned long port)
 178 {
 179         _outw(w, port);
 180         delay();
 181 }
 182
 183 void _outl_p(unsigned long l, unsigned long port)
 184 {
 185         _outl(l, port);
 186         delay();
 187 }
 188
 189 void _insb(unsigned int port, void *addr, unsigned long count)
 190 {
 191         if (port >= LAN_IOSTART && port < LAN_IOEND)
 192                 _ne_insb(PORT2ADDR_NE(port), addr, count);
 193         else {
 194                 unsigned char *buf = addr;
 195                 unsigned char *portp = PORT2ADDR(port);
 196                 while (count--)
 197                         *buf++ = *(volatile unsigned char *)portp;
 198         }
 199 }
 200
 201 void _insw(unsigned int port, void *addr, unsigned long count)
 202 {
 203         unsigned short *buf = addr;
 204         unsigned short *portp;
 205
 206         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 207                 /*
 208                  * This portion is only used by smc91111.c to read data
 209                  * from the DATA_REG. Do not swap the data.
 210                  */
 211                 portp = PORT2ADDR_NE(port);
 212                 while (count--)
 213                         *buf++ = *(volatile unsigned short *)portp;
 214 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 215         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 216                 pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
 217                                 count, 1);
 218 #endif
 219 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 220         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 221                 portp = __port2addr_ata(port);
 222                 while (count--)
 223                         *buf++ = *(volatile unsigned short *)portp;
 224 #endif
 225         } else {
 226                 portp = PORT2ADDR(port);
 227                 while (count--)
 228                         *buf++ = *(volatile unsigned short *)portp;
 229         }
 230 }
 231
 232 void _insl(unsigned int port, void *addr, unsigned long count)
 233 {
 234         unsigned long *buf = addr;
 235         unsigned long *portp;
 236
 237         portp = PORT2ADDR(port);
 238         while (count--)
 239                 *buf++ = *(volatile unsigned long *)portp;
 240 }
 241
 242 void _outsb(unsigned int port, const void *addr, unsigned long count)
 243 {
 244         const unsigned char *buf = addr;
 245         unsigned char *portp;
 246
 247         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 248                 portp = PORT2ADDR_NE(port);
 249                 while (count--)
 250                         _ne_outb(*buf++, portp);
 251         } else {
 252                 portp = PORT2ADDR(port);
 253                 while (count--)
 254                         *(volatile unsigned char *)portp = *buf++;
 255         }
 256 }
 257
 258 void _outsw(unsigned int port, const void *addr, unsigned long count)
 259 {
 260         const unsigned short *buf = addr;
 261         unsigned short *portp;
 262
 263         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 264                 /*
 265                  * This portion is only used by smc91111.c to write data
 266                  * into the DATA_REG. Do not swap the data.
 267                  */
 268                 portp = PORT2ADDR_NE(port);
 269                 while (count--)
 270                         *(volatile unsigned short *)portp = *buf++;
 271 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 272         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 273                 portp = __port2addr_ata(port);
 274                 while (count--)
 275                         *(volatile unsigned short *)portp = *buf++;
 276 #endif
 277 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 278         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 279                 pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
 280                                  count, 1);
 281 #endif
 282         } else {
 283                 portp = PORT2ADDR(port);
 284                 while (count--)
 285                         *(volatile unsigned short *)portp = *buf++;
 286         }
 287 }
 288
 289 void _outsl(unsigned int port, const void *addr, unsigned long count)
 290 {
 291         const unsigned long *buf = addr;
 292         unsigned char *portp;
 293
 294         portp = PORT2ADDR(port);
 295         while (count--)
 296                 *(volatile unsigned long *)portp = *buf++;
 297 }