arch/sh/boards/se/7343/io.c

   1 /*
   2  * arch/sh/boards/se/7343/io.c
   3  *
   4  * I/O routine for SH-Mobile3AS 7343 SolutionEngine.
   5  *
   6  */
   7 #include <linux/kernel.h>
   8 #include <asm/io.h>
   9 #include <asm/mach/se7343.h>
  10
  11 #define badio(fn, a) panic("bad i/o operation %s for %08lx.", #fn, a)
  12
  13 struct iop {
  14         unsigned long start, end;
  15         unsigned long base;
  16         struct iop *(*check) (struct iop * p, unsigned long port);
  17         unsigned char (*inb) (struct iop * p, unsigned long port);
  18         unsigned short (*inw) (struct iop * p, unsigned long port);
  19         void (*outb) (struct iop * p, unsigned char value, unsigned long port);
  20         void (*outw) (struct iop * p, unsigned short value, unsigned long port);
  21 };
  22
  23 struct iop *
  24 simple_check(struct iop *p, unsigned long port)
  25 {
  26         static int count;
  27
  28         if (count < 100)
  29                 count++;
  30
  31         port &= 0xFFFF;
  32
  33         if ((p->start <= port) && (port <= p->end))
  34                 return p;
  35         else
  36                 badio(check, port);
  37 }
  38
  39 struct iop *
  40 ide_check(struct iop *p, unsigned long port)
  41 {
  42         if (((0x1f0 <= port) && (port <= 0x1f7)) || (port == 0x3f7))
  43                 return p;
  44         return NULL;
  45 }
  46
  47 unsigned char
  48 simple_inb(struct iop *p, unsigned long port)
  49 {
  50         return *(unsigned char *) (p->base + port);
  51 }
  52
  53 unsigned short
  54 simple_inw(struct iop *p, unsigned long port)
  55 {
  56         return *(unsigned short *) (p->base + port);
  57 }
  58
  59 void
  60 simple_outb(struct iop *p, unsigned char value, unsigned long port)
  61 {
  62         *(unsigned char *) (p->base + port) = value;
  63 }
  64
  65 void
  66 simple_outw(struct iop *p, unsigned short value, unsigned long port)
  67 {
  68         *(unsigned short *) (p->base + port) = value;
  69 }
  70
  71 unsigned char
  72 pcc_inb(struct iop *p, unsigned long port)
  73 {
  74         unsigned long addr = p->base + port + 0x40000;
  75         unsigned long v;
  76
  77         if (port & 1)
  78                 addr += 0x00400000;
  79         v = *(volatile unsigned char *) addr;
  80         return v;
  81 }
  82
  83 void
  84 pcc_outb(struct iop *p, unsigned char value, unsigned long port)
  85 {
  86         unsigned long addr = p->base + port + 0x40000;
  87
  88         if (port & 1)
  89                 addr += 0x00400000;
  90         *(volatile unsigned char *) addr = value;
  91 }
  92
  93 unsigned char
  94 bad_inb(struct iop *p, unsigned long port)
  95 {
  96         badio(inb, port);
  97 }
  98
  99 void
 100 bad_outb(struct iop *p, unsigned char value, unsigned long port)
 101 {
 102         badio(inw, port);
 103 }
 104
 105 #ifdef CONFIG_SMC91X
 106 /* MSTLANEX01 LAN at 0xb400:0000 */
 107 static struct iop laniop = {
 108         .start = 0x00,
 109         .end = 0x0F,
 110         .base = 0x04000000,
 111         .check = simple_check,
 112         .inb = simple_inb,
 113         .inw = simple_inw,
 114         .outb = simple_outb,
 115         .outw = simple_outw,
 116 };
 117 #endif
 118
 119 #ifdef CONFIG_NE2000
 120 /* NE2000 pc card NIC */
 121 static struct iop neiop = {
 122         .start = 0x280,
 123         .end = 0x29f,
 124         .base = 0xb0600000 + 0x80,      /* soft 0x280 -> hard 0x300 */
 125         .check = simple_check,
 126         .inb = pcc_inb,
 127         .inw = simple_inw,
 128         .outb = pcc_outb,
 129         .outw = simple_outw,
 130 };
 131 #endif
 132
 133 #ifdef CONFIG_IDE
 134 /* CF in CF slot */
 135 static struct iop cfiop = {
 136         .base = 0xb0600000,
 137         .check = ide_check,
 138         .inb = pcc_inb,
 139         .inw = simple_inw,
 140         .outb = pcc_outb,
 141         .outw = simple_outw,
 142 };
 143 #endif
 144
 145 static __inline__ struct iop *
 146 port2iop(unsigned long port)
 147 {
 148         if (0) ;
 149 #if defined(CONFIG_SMC91X)
 150         else if (laniop.check(&laniop, port))
 151                 return &laniop;
 152 #endif
 153 #if defined(CONFIG_NE2000)
 154         else if (neiop.check(&neiop, port))
 155                 return &neiop;
 156 #endif
 157 #if defined(CONFIG_IDE)
 158         else if (cfiop.check(&cfiop, port))
 159                 return &cfiop;
 160 #endif
 161         else
 162                 return NULL;
 163 }
 164
 165 static inline void
 166 delay(void)
 167 {
 168         ctrl_inw(0xac000000);
 169         ctrl_inw(0xac000000);
 170 }
 171
 172 unsigned char
 173 sh7343se_inb(unsigned long port)
 174 {
 175         struct iop *p = port2iop(port);
 176         return (p->inb) (p, port);
 177 }
 178
 179 unsigned char
 180 sh7343se_inb_p(unsigned long port)
 181 {
 182         unsigned char v = sh7343se_inb(port);
 183         delay();
 184         return v;
 185 }
 186
 187 unsigned short
 188 sh7343se_inw(unsigned long port)
 189 {
 190         struct iop *p = port2iop(port);
 191         return (p->inw) (p, port);
 192 }
 193
 194 unsigned int
 195 sh7343se_inl(unsigned long port)
 196 {
 197         badio(inl, port);
 198 }
 199
 200 void
 201 sh7343se_outb(unsigned char value, unsigned long port)
 202 {
 203         struct iop *p = port2iop(port);
 204         (p->outb) (p, value, port);
 205 }
 206
 207 void
 208 sh7343se_outb_p(unsigned char value, unsigned long port)
 209 {
 210         sh7343se_outb(value, port);
 211         delay();
 212 }
 213
 214 void
 215 sh7343se_outw(unsigned short value, unsigned long port)
 216 {
 217         struct iop *p = port2iop(port);
 218         (p->outw) (p, value, port);
 219 }
 220
 221 void
 222 sh7343se_outl(unsigned int value, unsigned long port)
 223 {
 224         badio(outl, port);
 225 }
 226
 227 void
 228 sh7343se_insb(unsigned long port, void *addr, unsigned long count)
 229 {
 230         unsigned char *a = addr;
 231         struct iop *p = port2iop(port);
 232         while (count--)
 233                 *a++ = (p->inb) (p, port);
 234 }
 235
 236 void
 237 sh7343se_insw(unsigned long port, void *addr, unsigned long count)
 238 {
 239         unsigned short *a = addr;
 240         struct iop *p = port2iop(port);
 241         while (count--)
 242                 *a++ = (p->inw) (p, port);
 243 }
 244
 245 void
 246 sh7343se_insl(unsigned long port, void *addr, unsigned long count)
 247 {
 248         badio(insl, port);
 249 }
 250
 251 void
 252 sh7343se_outsb(unsigned long port, const void *addr, unsigned long count)
 253 {
 254         unsigned char *a = (unsigned char *) addr;
 255         struct iop *p = port2iop(port);
 256         while (count--)
 257                 (p->outb) (p, *a++, port);
 258 }
 259
 260 void
 261 sh7343se_outsw(unsigned long port, const void *addr, unsigned long count)
 262 {
 263         unsigned short *a = (unsigned short *) addr;
 264         struct iop *p = port2iop(port);
 265         while (count--)
 266                 (p->outw) (p, *a++, port);
 267 }
 268
 269 void
 270 sh7343se_outsl(unsigned long port, const void *addr, unsigned long count)
 271 {
 272         badio(outsw, port);
 273 }