arch/m32r/platforms/mappi2/io.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  linux/arch/m32r/platforms/mappi2/io.c
   4  *
   5  *  Typical I/O routines for Mappi2 board.
   6  *
   7  *  Copyright (c) 2001-2005  Hiroyuki Kondo, Hirokazu Takata,
   8  *                           Hitoshi Yamamoto, Mamoru Sakugawa
   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 #define PORT2ADDR_NE(port)   _port2addr_ne(port)
  32 #define PORT2ADDR_USB(port)  _port2addr_usb(port)
  33
  34 static inline void *_port2addr(unsigned long port)
  35 {
  36         return (void *)(port | NONCACHE_OFFSET);
  37 }
  38
  39 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
  40 static inline void *__port2addr_ata(unsigned long port)
  41 {
  42         static int      dummy_reg;
  43
  44         switch (port) {
  45         case 0x1f0:     return (void *)(0x0c002000 | NONCACHE_OFFSET);
  46         case 0x1f1:     return (void *)(0x0c012800 | NONCACHE_OFFSET);
  47         case 0x1f2:     return (void *)(0x0c012002 | NONCACHE_OFFSET);
  48         case 0x1f3:     return (void *)(0x0c012802 | NONCACHE_OFFSET);
  49         case 0x1f4:     return (void *)(0x0c012004 | NONCACHE_OFFSET);
  50         case 0x1f5:     return (void *)(0x0c012804 | NONCACHE_OFFSET);
  51         case 0x1f6:     return (void *)(0x0c012006 | NONCACHE_OFFSET);
  52         case 0x1f7:     return (void *)(0x0c012806 | NONCACHE_OFFSET);
  53         case 0x3f6:     return (void *)(0x0c01200e | NONCACHE_OFFSET);
  54         default:        return (void *)&dummy_reg;
  55         }
  56 }
  57 #endif
  58
  59 #define LAN_IOSTART     (0x300 | NONCACHE_OFFSET)
  60 #define LAN_IOEND       (0x320 | NONCACHE_OFFSET)
  61 #ifdef CONFIG_CHIP_OPSP
  62 static inline void *_port2addr_ne(unsigned long port)
  63 {
  64         return (void *)(port + 0x10000000);
  65 }
  66 #else
  67 static inline void *_port2addr_ne(unsigned long port)
  68 {
  69         return (void *)(port + 0x04000000);
  70 }
  71 #endif
  72 static inline void *_port2addr_usb(unsigned long port)
  73 {
  74         return (void *)(port + NONCACHE_OFFSET + 0x14000000);
  75 }
  76 static inline void delay(void)
  77 {
  78         __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
  79 }
  80
  81 /*
  82  * NIC I/O function
  83  */
  84
  85 static inline unsigned char _ne_inb(void *portp)
  86 {
  87         return (unsigned char) *(volatile unsigned char *)portp;
  88 }
  89
  90 static inline unsigned short _ne_inw(void *portp)
  91 {
  92         return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
  93 }
  94
  95 static inline void _ne_insb(void *portp, void * addr, unsigned long count)
  96 {
  97         unsigned char *buf = addr;
  98
  99         while (count--)
 100                 *buf++ = *(volatile unsigned char *)portp;
 101 }
 102
 103 static inline void _ne_outb(unsigned char b, void *portp)
 104 {
 105         *(volatile unsigned char *)portp = (unsigned char)b;
 106 }
 107
 108 static inline void _ne_outw(unsigned short w, void *portp)
 109 {
 110         *(volatile unsigned short *)portp = cpu_to_le16(w);
 111 }
 112
 113 unsigned char _inb(unsigned long port)
 114 {
 115         if (port >= LAN_IOSTART && port < LAN_IOEND)
 116                 return _ne_inb(PORT2ADDR_NE(port));
 117 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 118         else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 119                 return *(volatile unsigned char *)__port2addr_ata(port);
 120         }
 121 #endif
 122 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 123         else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 124                 unsigned char b;
 125                 pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
 126                 return b;
 127         } else
 128 #endif
 129
 130         return *(volatile unsigned char *)PORT2ADDR(port);
 131 }
 132
 133 unsigned short _inw(unsigned long port)
 134 {
 135         if (port >= LAN_IOSTART && port < LAN_IOEND)
 136                 return _ne_inw(PORT2ADDR_NE(port));
 137 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 138         else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 139                 return *(volatile unsigned short *)__port2addr_ata(port);
 140         }
 141 #endif
 142 #if defined(CONFIG_USB)
 143         else if (port >= 0x340 && port < 0x3a0)
 144                 return *(volatile unsigned short *)PORT2ADDR_USB(port);
 145 #endif
 146
 147 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 148         else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 149                 unsigned short w;
 150                 pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
 151                 return w;
 152         } else
 153 #endif
 154         return *(volatile unsigned short *)PORT2ADDR(port);
 155 }
 156
 157 unsigned long _inl(unsigned long port)
 158 {
 159 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 160         if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 161                 unsigned long l;
 162                 pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
 163                 return l;
 164         } else
 165 #endif
 166         return *(volatile unsigned long *)PORT2ADDR(port);
 167 }
 168
 169 unsigned char _inb_p(unsigned long port)
 170 {
 171         unsigned char v = _inb(port);
 172         delay();
 173         return (v);
 174 }
 175
 176 unsigned short _inw_p(unsigned long port)
 177 {
 178         unsigned short v = _inw(port);
 179         delay();
 180         return (v);
 181 }
 182
 183 unsigned long _inl_p(unsigned long port)
 184 {
 185         unsigned long v = _inl(port);
 186         delay();
 187         return (v);
 188 }
 189
 190 void _outb(unsigned char b, unsigned long port)
 191 {
 192         if (port >= LAN_IOSTART && port < LAN_IOEND)
 193                 _ne_outb(b, PORT2ADDR_NE(port));
 194         else
 195 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 196         if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 197                 *(volatile unsigned char *)__port2addr_ata(port) = b;
 198         } else
 199 #endif
 200 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 201         if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 202                 pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
 203         } else
 204 #endif
 205                 *(volatile unsigned char *)PORT2ADDR(port) = b;
 206 }
 207
 208 void _outw(unsigned short w, unsigned long port)
 209 {
 210         if (port >= LAN_IOSTART && port < LAN_IOEND)
 211                 _ne_outw(w, PORT2ADDR_NE(port));
 212         else
 213 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 214         if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 215                 *(volatile unsigned short *)__port2addr_ata(port) = w;
 216         } else
 217 #endif
 218 #if defined(CONFIG_USB)
 219         if (port >= 0x340 && port < 0x3a0)
 220                 *(volatile unsigned short *)PORT2ADDR_USB(port) = w;
 221         else
 222 #endif
 223 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 224         if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 225                 pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
 226         } else
 227 #endif
 228                 *(volatile unsigned short *)PORT2ADDR(port) = w;
 229 }
 230
 231 void _outl(unsigned long l, unsigned long port)
 232 {
 233 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 234         if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 235                 pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
 236         } else
 237 #endif
 238         *(volatile unsigned long *)PORT2ADDR(port) = l;
 239 }
 240
 241 void _outb_p(unsigned char b, unsigned long port)
 242 {
 243         _outb(b, port);
 244         delay();
 245 }
 246
 247 void _outw_p(unsigned short w, unsigned long port)
 248 {
 249         _outw(w, port);
 250         delay();
 251 }
 252
 253 void _outl_p(unsigned long l, unsigned long port)
 254 {
 255         _outl(l, port);
 256         delay();
 257 }
 258
 259 void _insb(unsigned int port, void * addr, unsigned long count)
 260 {
 261         if (port >= LAN_IOSTART && port < LAN_IOEND)
 262                 _ne_insb(PORT2ADDR_NE(port), addr, count);
 263 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 264         else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 265                 unsigned char *buf = addr;
 266                 unsigned char *portp = __port2addr_ata(port);
 267                 while (count--)
 268                         *buf++ = *(volatile unsigned char *)portp;
 269         }
 270 #endif
 271 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 272         else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 273                 pcc_ioread_byte(0, port, (void *)addr, sizeof(unsigned char),
 274                                 count, 1);
 275         }
 276 #endif
 277         else {
 278                 unsigned char *buf = addr;
 279                 unsigned char *portp = PORT2ADDR(port);
 280                 while (count--)
 281                         *buf++ = *(volatile unsigned char *)portp;
 282         }
 283 }
 284
 285 void _insw(unsigned int port, void * addr, unsigned long count)
 286 {
 287         unsigned short *buf = addr;
 288         unsigned short *portp;
 289
 290         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 291                 portp = PORT2ADDR_NE(port);
 292                 while (count--)
 293                         *buf++ = *(volatile unsigned short *)portp;
 294 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 295         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 296                 pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
 297                                 count, 1);
 298 #endif
 299 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 300         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 301                 portp = __port2addr_ata(port);
 302                 while (count--)
 303                         *buf++ = *(volatile unsigned short *)portp;
 304 #endif
 305         } else {
 306                 portp = PORT2ADDR(port);
 307                 while (count--)
 308                         *buf++ = *(volatile unsigned short *)portp;
 309         }
 310 }
 311
 312 void _insl(unsigned int port, void * addr, unsigned long count)
 313 {
 314         unsigned long *buf = addr;
 315         unsigned long *portp;
 316
 317         portp = PORT2ADDR(port);
 318         while (count--)
 319                 *buf++ = *(volatile unsigned long *)portp;
 320 }
 321
 322 void _outsb(unsigned int port, const void * addr, unsigned long count)
 323 {
 324         const unsigned char *buf = addr;
 325         unsigned char *portp;
 326
 327         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 328                 portp = PORT2ADDR_NE(port);
 329                 while (count--)
 330                         _ne_outb(*buf++, portp);
 331 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 332         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 333                 portp = __port2addr_ata(port);
 334                 while (count--)
 335                         *(volatile unsigned char *)portp = *buf++;
 336 #endif
 337 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 338         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 339                 pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
 340                                  count, 1);
 341 #endif
 342         } else {
 343                 portp = PORT2ADDR(port);
 344                 while (count--)
 345                         *(volatile unsigned char *)portp = *buf++;
 346         }
 347 }
 348
 349 void _outsw(unsigned int port, const void * addr, unsigned long count)
 350 {
 351         const unsigned short *buf = addr;
 352         unsigned short *portp;
 353
 354         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 355                 portp = PORT2ADDR_NE(port);
 356                 while (count--)
 357                         *(volatile unsigned short *)portp = *buf++;
 358 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 359         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 360                 portp = __port2addr_ata(port);
 361                 while (count--)
 362                         *(volatile unsigned short *)portp = *buf++;
 363 #endif
 364 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 365         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 366                 pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
 367                                  count, 1);
 368 #endif
 369         } else {
 370                 portp = PORT2ADDR(port);
 371                 while (count--)
 372                         *(volatile unsigned short *)portp = *buf++;
 373         }
 374 }
 375
 376 void _outsl(unsigned int port, const void * addr, unsigned long count)
 377 {
 378         const unsigned long *buf = addr;
 379         unsigned char *portp;
 380
 381         portp = PORT2ADDR(port);
 382         while (count--)
 383                 *(volatile unsigned long *)portp = *buf++;
 384 }