arch/m32r/platforms/m32700ut/io.c

   1 /*
   2  *  linux/arch/m32r/platforms/m32700ut/io.c
   3  *
   4  *  Typical I/O routines for M32700UT board.
   5  *
   6  *  Copyright (c) 2001-2005  Hiroyuki Kondo, Hirokazu Takata,
   7  *                           Hitoshi Yamamoto, Takeo Takahashi
   8  *
   9  *  This file is subject to the terms and conditions of the GNU General
  10  *  Public License.  See the file "COPYING" in the main directory of this
  11  *  archive for more details.
  12  */
  13
  14 #include <asm/m32r.h>
  15 #include <asm/page.h>
  16 #include <asm/io.h>
  17 #include <asm/byteorder.h>
  18
  19 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
  20 #include <linux/types.h>
  21
  22 #define M32R_PCC_IOMAP_SIZE 0x1000
  23
  24 #define M32R_PCC_IOSTART0 0x1000
  25 #define M32R_PCC_IOEND0   (M32R_PCC_IOSTART0 + M32R_PCC_IOMAP_SIZE - 1)
  26
  27 extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
  28 extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
  29 extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
  30 extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
  31 #endif /* CONFIG_PCMCIA && CONFIG_M32R_CFC */
  32
  33 #define PORT2ADDR(port)         _port2addr(port)
  34 #define PORT2ADDR_USB(port)     _port2addr_usb(port)
  35
  36 static inline void *_port2addr(unsigned long port)
  37 {
  38         return (void *)(port | NONCACHE_OFFSET);
  39 }
  40
  41 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
  42 static inline void *__port2addr_ata(unsigned long port)
  43 {
  44         static int      dummy_reg;
  45
  46         switch (port) {
  47         case 0x1f0:     return (void *)(0x0c002000 | NONCACHE_OFFSET);
  48         case 0x1f1:     return (void *)(0x0c012800 | NONCACHE_OFFSET);
  49         case 0x1f2:     return (void *)(0x0c012002 | NONCACHE_OFFSET);
  50         case 0x1f3:     return (void *)(0x0c012802 | NONCACHE_OFFSET);
  51         case 0x1f4:     return (void *)(0x0c012004 | NONCACHE_OFFSET);
  52         case 0x1f5:     return (void *)(0x0c012804 | NONCACHE_OFFSET);
  53         case 0x1f6:     return (void *)(0x0c012006 | NONCACHE_OFFSET);
  54         case 0x1f7:     return (void *)(0x0c012806 | NONCACHE_OFFSET);
  55         case 0x3f6:     return (void *)(0x0c01200e | NONCACHE_OFFSET);
  56         default:        return (void *)&dummy_reg;
  57         }
  58 }
  59 #endif
  60
  61 /*
  62  * M32700UT-LAN is located in the extended bus space
  63  * from 0x10000000 to 0x13ffffff on physical address.
  64  * The base address of LAN controller(LAN91C111) is 0x300.
  65  */
  66 #define LAN_IOSTART     (0x300 | NONCACHE_OFFSET)
  67 #define LAN_IOEND       (0x320 | NONCACHE_OFFSET)
  68 static inline void *_port2addr_ne(unsigned long port)
  69 {
  70         return (void *)(port + 0x10000000);
  71 }
  72 static inline void *_port2addr_usb(unsigned long port)
  73 {
  74         return (void *)((port & 0x0f) + NONCACHE_OFFSET + 0x10303000);
  75 }
  76
  77 static inline void delay(void)
  78 {
  79         __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
  80 }
  81
  82 /*
  83  * NIC I/O function
  84  */
  85
  86 #define PORT2ADDR_NE(port)  _port2addr_ne(port)
  87
  88 static inline unsigned char _ne_inb(void *portp)
  89 {
  90         return *(volatile unsigned char *)portp;
  91 }
  92
  93 static inline unsigned short _ne_inw(void *portp)
  94 {
  95         return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
  96 }
  97
  98 static inline void _ne_insb(void *portp, void *addr, unsigned long count)
  99 {
 100         unsigned char *buf = (unsigned char *)addr;
 101
 102         while (count--)
 103                 *buf++ = _ne_inb(portp);
 104 }
 105
 106 static inline void _ne_outb(unsigned char b, void *portp)
 107 {
 108         *(volatile unsigned char *)portp = b;
 109 }
 110
 111 static inline void _ne_outw(unsigned short w, void *portp)
 112 {
 113         *(volatile unsigned short *)portp = cpu_to_le16(w);
 114 }
 115
 116 unsigned char _inb(unsigned long port)
 117 {
 118         if (port >= LAN_IOSTART && port < LAN_IOEND)
 119                 return _ne_inb(PORT2ADDR_NE(port));
 120
 121 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 122         else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 123                 return *(volatile unsigned char *)__port2addr_ata(port);
 124         }
 125 #endif
 126 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 127         else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 128                 unsigned char b;
 129                 pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
 130                 return b;
 131         } else
 132 #endif
 133
 134         return *(volatile unsigned char *)PORT2ADDR(port);
 135 }
 136
 137 unsigned short _inw(unsigned long port)
 138 {
 139         if (port >= LAN_IOSTART && port < LAN_IOEND)
 140                 return _ne_inw(PORT2ADDR_NE(port));
 141 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 142         else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 143                 return *(volatile unsigned short *)__port2addr_ata(port);
 144         }
 145 #endif
 146 #if defined(CONFIG_USB)
 147         else if(port >= 0x340 && port < 0x3a0)
 148                 return *(volatile unsigned short *)PORT2ADDR_USB(port);
 149 #endif
 150 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 151         else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 152                 unsigned short w;
 153                 pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
 154                 return w;
 155         } else
 156 #endif
 157         return *(volatile unsigned short *)PORT2ADDR(port);
 158 }
 159
 160 unsigned long _inl(unsigned long port)
 161 {
 162 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 163         if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 164                 unsigned long l;
 165                 pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
 166                 return l;
 167         } else
 168 #endif
 169         return *(volatile unsigned long *)PORT2ADDR(port);
 170 }
 171
 172 unsigned char _inb_p(unsigned long port)
 173 {
 174         unsigned char v = _inb(port);
 175         delay();
 176         return (v);
 177 }
 178
 179 unsigned short _inw_p(unsigned long port)
 180 {
 181         unsigned short v = _inw(port);
 182         delay();
 183         return (v);
 184 }
 185
 186 unsigned long _inl_p(unsigned long port)
 187 {
 188         unsigned long v = _inl(port);
 189         delay();
 190         return (v);
 191 }
 192
 193 void _outb(unsigned char b, unsigned long port)
 194 {
 195         if (port >= LAN_IOSTART && port < LAN_IOEND)
 196                 _ne_outb(b, PORT2ADDR_NE(port));
 197         else
 198 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 199         if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 200                 *(volatile unsigned char *)__port2addr_ata(port) = b;
 201         } else
 202 #endif
 203 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 204         if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 205                 pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
 206         } else
 207 #endif
 208                 *(volatile unsigned char *)PORT2ADDR(port) = b;
 209 }
 210
 211 void _outw(unsigned short w, unsigned long port)
 212 {
 213         if (port >= LAN_IOSTART && port < LAN_IOEND)
 214                 _ne_outw(w, PORT2ADDR_NE(port));
 215         else
 216 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 217         if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 218                 *(volatile unsigned short *)__port2addr_ata(port) = w;
 219         } else
 220 #endif
 221 #if defined(CONFIG_USB)
 222         if(port >= 0x340 && port < 0x3a0)
 223                 *(volatile unsigned short *)PORT2ADDR_USB(port) = w;
 224         else
 225 #endif
 226 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 227         if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 228                 pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
 229         } else
 230 #endif
 231                 *(volatile unsigned short *)PORT2ADDR(port) = w;
 232 }
 233
 234 void _outl(unsigned long l, unsigned long port)
 235 {
 236 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 237         if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 238                 pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
 239         } else
 240 #endif
 241         *(volatile unsigned long *)PORT2ADDR(port) = l;
 242 }
 243
 244 void _outb_p(unsigned char b, unsigned long port)
 245 {
 246         _outb(b, port);
 247         delay();
 248 }
 249
 250 void _outw_p(unsigned short w, unsigned long port)
 251 {
 252         _outw(w, port);
 253         delay();
 254 }
 255
 256 void _outl_p(unsigned long l, unsigned long port)
 257 {
 258         _outl(l, port);
 259         delay();
 260 }
 261
 262 void _insb(unsigned int port, void *addr, unsigned long count)
 263 {
 264         if (port >= LAN_IOSTART && port < LAN_IOEND)
 265                 _ne_insb(PORT2ADDR_NE(port), addr, count);
 266 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 267         else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 268                 unsigned char *buf = addr;
 269                 unsigned char *portp = __port2addr_ata(port);
 270                 while (count--)
 271                         *buf++ = *(volatile unsigned char *)portp;
 272         }
 273 #endif
 274 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 275         else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 276                 pcc_ioread_byte(0, port, (void *)addr, sizeof(unsigned char),
 277                                 count, 1);
 278         }
 279 #endif
 280         else {
 281                 unsigned char *buf = addr;
 282                 unsigned char *portp = PORT2ADDR(port);
 283                 while (count--)
 284                         *buf++ = *(volatile unsigned char *)portp;
 285         }
 286 }
 287
 288 void _insw(unsigned int port, void *addr, unsigned long count)
 289 {
 290         unsigned short *buf = addr;
 291         unsigned short *portp;
 292
 293         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 294                 /*
 295                  * This portion is only used by smc91111.c to read data
 296                  * from the DATA_REG. Do not swap the data.
 297                  */
 298                 portp = PORT2ADDR_NE(port);
 299                 while (count--)
 300                         *buf++ = *(volatile unsigned short *)portp;
 301 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 302         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 303                 pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
 304                                 count, 1);
 305 #endif
 306 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 307         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 308                 portp = __port2addr_ata(port);
 309                 while (count--)
 310                         *buf++ = *(volatile unsigned short *)portp;
 311 #endif
 312         } else {
 313                 portp = PORT2ADDR(port);
 314                 while (count--)
 315                         *buf++ = *(volatile unsigned short *)portp;
 316         }
 317 }
 318
 319 void _insl(unsigned int port, void *addr, unsigned long count)
 320 {
 321         unsigned long *buf = addr;
 322         unsigned long *portp;
 323
 324         portp = PORT2ADDR(port);
 325         while (count--)
 326                 *buf++ = *(volatile unsigned long *)portp;
 327 }
 328
 329 void _outsb(unsigned int port, const void *addr, unsigned long count)
 330 {
 331         const unsigned char *buf = addr;
 332         unsigned char *portp;
 333
 334         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 335                 portp = PORT2ADDR_NE(port);
 336                 while (count--)
 337                         _ne_outb(*buf++, portp);
 338 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 339         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 340                 portp = __port2addr_ata(port);
 341                 while (count--)
 342                         *(volatile unsigned char *)portp = *buf++;
 343 #endif
 344 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 345         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 346                 pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
 347                                  count, 1);
 348 #endif
 349         } else {
 350                 portp = PORT2ADDR(port);
 351                 while (count--)
 352                         *(volatile unsigned char *)portp = *buf++;
 353         }
 354 }
 355
 356 void _outsw(unsigned int port, const void *addr, unsigned long count)
 357 {
 358         const unsigned short *buf = addr;
 359         unsigned short *portp;
 360
 361         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 362                 /*
 363                  * This portion is only used by smc91111.c to write data
 364                  * into the DATA_REG. Do not swap the data.
 365                  */
 366                 portp = PORT2ADDR_NE(port);
 367                 while (count--)
 368                         *(volatile unsigned short *)portp = *buf++;
 369 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 370         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 371                 portp = __port2addr_ata(port);
 372                 while (count--)
 373                         *(volatile unsigned short *)portp = *buf++;
 374 #endif
 375 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 376         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 377                 pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
 378                                  count, 1);
 379 #endif
 380         } else {
 381                 portp = PORT2ADDR(port);
 382                 while (count--)
 383                         *(volatile unsigned short *)portp = *buf++;
 384         }
 385 }
 386
 387 void _outsl(unsigned int port, const void *addr, unsigned long count)
 388 {
 389         const unsigned long *buf = addr;
 390         unsigned char *portp;
 391
 392         portp = PORT2ADDR(port);
 393         while (count--)
 394                 *(volatile unsigned long *)portp = *buf++;
 395 }