arch/m32r/platforms/m32104ut/io.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  linux/arch/m32r/platforms/m32104ut/io.c
   4  *
   5  *  Typical I/O routines for M32104UT board.
   6  *
   7  *  Copyright (c) 2001-2005  Hiroyuki Kondo, Hirokazu Takata,
   8  *                           Hitoshi Yamamoto, Mamoru Sakugawa,
   9  *                           Naoto Sugai, Hayato Fujiwara
  10  */
  11
  12 #include <asm/m32r.h>
  13 #include <asm/page.h>
  14 #include <asm/io.h>
  15 #include <asm/byteorder.h>
  16
  17 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
  18 #include <linux/types.h>
  19
  20 #define M32R_PCC_IOMAP_SIZE 0x1000
  21
  22 #define M32R_PCC_IOSTART0 0x1000
  23 #define M32R_PCC_IOEND0   (M32R_PCC_IOSTART0 + M32R_PCC_IOMAP_SIZE - 1)
  24
  25 extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
  26 extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
  27 extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
  28 extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
  29 #endif /* CONFIG_PCMCIA && CONFIG_M32R_CFC */
  30
  31 #define PORT2ADDR(port)  _port2addr(port)
  32
  33 static inline void *_port2addr(unsigned long port)
  34 {
  35         return (void *)(port | NONCACHE_OFFSET);
  36 }
  37
  38 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
  39 static inline void *__port2addr_ata(unsigned long port)
  40 {
  41         static int      dummy_reg;
  42
  43         switch (port) {
  44         case 0x1f0:     return (void *)(0x0c002000 | NONCACHE_OFFSET);
  45         case 0x1f1:     return (void *)(0x0c012800 | NONCACHE_OFFSET);
  46         case 0x1f2:     return (void *)(0x0c012002 | NONCACHE_OFFSET);
  47         case 0x1f3:     return (void *)(0x0c012802 | NONCACHE_OFFSET);
  48         case 0x1f4:     return (void *)(0x0c012004 | NONCACHE_OFFSET);
  49         case 0x1f5:     return (void *)(0x0c012804 | NONCACHE_OFFSET);
  50         case 0x1f6:     return (void *)(0x0c012006 | NONCACHE_OFFSET);
  51         case 0x1f7:     return (void *)(0x0c012806 | NONCACHE_OFFSET);
  52         case 0x3f6:     return (void *)(0x0c01200e | NONCACHE_OFFSET);
  53         default:        return (void *)&dummy_reg;
  54         }
  55 }
  56 #endif
  57
  58 /*
  59  * M32104T-LAN is located in the extended bus space
  60  * from 0x01000000 to 0x01ffffff on physical address.
  61  * The base address of LAN controller(LAN91C111) is 0x300.
  62  */
  63 #define LAN_IOSTART     (0x300 | NONCACHE_OFFSET)
  64 #define LAN_IOEND       (0x320 | NONCACHE_OFFSET)
  65 static inline void *_port2addr_ne(unsigned long port)
  66 {
  67         return (void *)(port + NONCACHE_OFFSET + 0x01000000);
  68 }
  69
  70 static inline void delay(void)
  71 {
  72         __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
  73 }
  74
  75 /*
  76  * NIC I/O function
  77  */
  78
  79 #define PORT2ADDR_NE(port)  _port2addr_ne(port)
  80
  81 static inline unsigned char _ne_inb(void *portp)
  82 {
  83         return *(volatile unsigned char *)portp;
  84 }
  85
  86 static inline unsigned short _ne_inw(void *portp)
  87 {
  88         return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
  89 }
  90
  91 static inline void _ne_insb(void *portp, void *addr, unsigned long count)
  92 {
  93         unsigned char *buf = (unsigned char *)addr;
  94
  95         while (count--)
  96                 *buf++ = _ne_inb(portp);
  97 }
  98
  99 static inline void _ne_outb(unsigned char b, void *portp)
 100 {
 101         *(volatile unsigned char *)portp = b;
 102 }
 103
 104 static inline void _ne_outw(unsigned short w, void *portp)
 105 {
 106         *(volatile unsigned short *)portp = cpu_to_le16(w);
 107 }
 108
 109 unsigned char _inb(unsigned long port)
 110 {
 111         if (port >= LAN_IOSTART && port < LAN_IOEND)
 112                 return _ne_inb(PORT2ADDR_NE(port));
 113
 114         return *(volatile unsigned char *)PORT2ADDR(port);
 115 }
 116
 117 unsigned short _inw(unsigned long port)
 118 {
 119         if (port >= LAN_IOSTART && port < LAN_IOEND)
 120                 return _ne_inw(PORT2ADDR_NE(port));
 121
 122         return *(volatile unsigned short *)PORT2ADDR(port);
 123 }
 124
 125 unsigned long _inl(unsigned long port)
 126 {
 127         return *(volatile unsigned long *)PORT2ADDR(port);
 128 }
 129
 130 unsigned char _inb_p(unsigned long port)
 131 {
 132         unsigned char v = _inb(port);
 133         delay();
 134         return (v);
 135 }
 136
 137 unsigned short _inw_p(unsigned long port)
 138 {
 139         unsigned short v = _inw(port);
 140         delay();
 141         return (v);
 142 }
 143
 144 unsigned long _inl_p(unsigned long port)
 145 {
 146         unsigned long v = _inl(port);
 147         delay();
 148         return (v);
 149 }
 150
 151 void _outb(unsigned char b, unsigned long port)
 152 {
 153         if (port >= LAN_IOSTART && port < LAN_IOEND)
 154                 _ne_outb(b, PORT2ADDR_NE(port));
 155         else
 156                 *(volatile unsigned char *)PORT2ADDR(port) = b;
 157 }
 158
 159 void _outw(unsigned short w, unsigned long port)
 160 {
 161         if (port >= LAN_IOSTART && port < LAN_IOEND)
 162                 _ne_outw(w, PORT2ADDR_NE(port));
 163         else
 164                 *(volatile unsigned short *)PORT2ADDR(port) = w;
 165 }
 166
 167 void _outl(unsigned long l, unsigned long port)
 168 {
 169         *(volatile unsigned long *)PORT2ADDR(port) = l;
 170 }
 171
 172 void _outb_p(unsigned char b, unsigned long port)
 173 {
 174         _outb(b, port);
 175         delay();
 176 }
 177
 178 void _outw_p(unsigned short w, unsigned long port)
 179 {
 180         _outw(w, port);
 181         delay();
 182 }
 183
 184 void _outl_p(unsigned long l, unsigned long port)
 185 {
 186         _outl(l, port);
 187         delay();
 188 }
 189
 190 void _insb(unsigned int port, void *addr, unsigned long count)
 191 {
 192         if (port >= LAN_IOSTART && port < LAN_IOEND)
 193                 _ne_insb(PORT2ADDR_NE(port), addr, count);
 194         else {
 195                 unsigned char *buf = addr;
 196                 unsigned char *portp = PORT2ADDR(port);
 197                 while (count--)
 198                         *buf++ = *(volatile unsigned char *)portp;
 199         }
 200 }
 201
 202 void _insw(unsigned int port, void *addr, unsigned long count)
 203 {
 204         unsigned short *buf = addr;
 205         unsigned short *portp;
 206
 207         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 208                 /*
 209                  * This portion is only used by smc91111.c to read data
 210                  * from the DATA_REG. Do not swap the data.
 211                  */
 212                 portp = PORT2ADDR_NE(port);
 213                 while (count--)
 214                         *buf++ = *(volatile unsigned short *)portp;
 215 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 216         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 217                 pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
 218                                 count, 1);
 219 #endif
 220 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 221         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 222                 portp = __port2addr_ata(port);
 223                 while (count--)
 224                         *buf++ = *(volatile unsigned short *)portp;
 225 #endif
 226         } else {
 227                 portp = PORT2ADDR(port);
 228                 while (count--)
 229                         *buf++ = *(volatile unsigned short *)portp;
 230         }
 231 }
 232
 233 void _insl(unsigned int port, void *addr, unsigned long count)
 234 {
 235         unsigned long *buf = addr;
 236         unsigned long *portp;
 237
 238         portp = PORT2ADDR(port);
 239         while (count--)
 240                 *buf++ = *(volatile unsigned long *)portp;
 241 }
 242
 243 void _outsb(unsigned int port, const void *addr, unsigned long count)
 244 {
 245         const unsigned char *buf = addr;
 246         unsigned char *portp;
 247
 248         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 249                 portp = PORT2ADDR_NE(port);
 250                 while (count--)
 251                         _ne_outb(*buf++, portp);
 252         } else {
 253                 portp = PORT2ADDR(port);
 254                 while (count--)
 255                         *(volatile unsigned char *)portp = *buf++;
 256         }
 257 }
 258
 259 void _outsw(unsigned int port, const void *addr, unsigned long count)
 260 {
 261         const unsigned short *buf = addr;
 262         unsigned short *portp;
 263
 264         if (port >= LAN_IOSTART && port < LAN_IOEND) {
 265                 /*
 266                  * This portion is only used by smc91111.c to write data
 267                  * into the DATA_REG. Do not swap the data.
 268                  */
 269                 portp = PORT2ADDR_NE(port);
 270                 while (count--)
 271                         *(volatile unsigned short *)portp = *buf++;
 272 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
 273         } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
 274                 portp = __port2addr_ata(port);
 275                 while (count--)
 276                         *(volatile unsigned short *)portp = *buf++;
 277 #endif
 278 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
 279         } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
 280                 pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
 281                                  count, 1);
 282 #endif
 283         } else {
 284                 portp = PORT2ADDR(port);
 285                 while (count--)
 286                         *(volatile unsigned short *)portp = *buf++;
 287         }
 288 }
 289
 290 void _outsl(unsigned int port, const void *addr, unsigned long count)
 291 {
 292         const unsigned long *buf = addr;
 293         unsigned char *portp;
 294
 295         portp = PORT2ADDR(port);
 296         while (count--)
 297                 *(volatile unsigned long *)portp = *buf++;
 298 }