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io.c
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1 /*
2  * linux/arch/m32r/platforms/mappi2/io.c
3  *
4  * Typical I/O routines for Mappi2 board.
5  *
6  * Copyright (c) 2001-2005 Hiroyuki Kondo, Hirokazu Takata,
7  * Hitoshi Yamamoto, Mamoru Sakugawa
8  */
9 
10 #include <asm/m32r.h>
11 #include <asm/page.h>
12 #include <asm/io.h>
13 #include <asm/byteorder.h>
14 
15 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
16 #include <linux/types.h>
17 
18 #define M32R_PCC_IOMAP_SIZE 0x1000
19 
20 #define M32R_PCC_IOSTART0 0x1000
21 #define M32R_PCC_IOEND0 (M32R_PCC_IOSTART0 + M32R_PCC_IOMAP_SIZE - 1)
22 
23 extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
24 extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
25 extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
26 extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
27 #endif /* CONFIG_PCMCIA && CONFIG_M32R_CFC */
28 
29 #define PORT2ADDR(port) _port2addr(port)
30 #define PORT2ADDR_NE(port) _port2addr_ne(port)
31 #define PORT2ADDR_USB(port) _port2addr_usb(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 #define LAN_IOSTART (0x300 | NONCACHE_OFFSET)
59 #define LAN_IOEND (0x320 | NONCACHE_OFFSET)
60 #ifdef CONFIG_CHIP_OPSP
61 static inline void *_port2addr_ne(unsigned long port)
62 {
63  return (void *)(port + 0x10000000);
64 }
65 #else
66 static inline void *_port2addr_ne(unsigned long port)
67 {
68  return (void *)(port + 0x04000000);
69 }
70 #endif
71 static inline void *_port2addr_usb(unsigned long port)
72 {
73  return (void *)(port + NONCACHE_OFFSET + 0x14000000);
74 }
75 static inline void delay(void)
76 {
77  __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
78 }
79 
80 /*
81  * NIC I/O function
82  */
83 
84 static inline unsigned char _ne_inb(void *portp)
85 {
86  return (unsigned char) *(volatile unsigned char *)portp;
87 }
88 
89 static inline unsigned short _ne_inw(void *portp)
90 {
91  return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
92 }
93 
94 static inline void _ne_insb(void *portp, void * addr, unsigned long count)
95 {
96  unsigned char *buf = addr;
97 
98  while (count--)
99  *buf++ = *(volatile unsigned char *)portp;
100 }
101 
102 static inline void _ne_outb(unsigned char b, void *portp)
103 {
104  *(volatile unsigned char *)portp = (unsigned char)b;
105 }
106 
107 static inline void _ne_outw(unsigned short w, void *portp)
108 {
109  *(volatile unsigned short *)portp = cpu_to_le16(w);
110 }
111 
112 unsigned char _inb(unsigned long port)
113 {
114  if (port >= LAN_IOSTART && port < LAN_IOEND)
115  return _ne_inb(PORT2ADDR_NE(port));
116 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
117  else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
118  return *(volatile unsigned char *)__port2addr_ata(port);
119  }
120 #endif
121 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
122  else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
123  unsigned char b;
124  pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
125  return b;
126  } else
127 #endif
128 
129  return *(volatile unsigned char *)PORT2ADDR(port);
130 }
131 
132 unsigned short _inw(unsigned long port)
133 {
134  if (port >= LAN_IOSTART && port < LAN_IOEND)
135  return _ne_inw(PORT2ADDR_NE(port));
136 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
137  else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
138  return *(volatile unsigned short *)__port2addr_ata(port);
139  }
140 #endif
141 #if defined(CONFIG_USB)
142  else if (port >= 0x340 && port < 0x3a0)
143  return *(volatile unsigned short *)PORT2ADDR_USB(port);
144 #endif
145 
146 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
147  else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
148  unsigned short w;
149  pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
150  return w;
151  } else
152 #endif
153  return *(volatile unsigned short *)PORT2ADDR(port);
154 }
155 
156 unsigned long _inl(unsigned long port)
157 {
158 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
159  if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
160  unsigned long l;
161  pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
162  return l;
163  } else
164 #endif
165  return *(volatile unsigned long *)PORT2ADDR(port);
166 }
167 
168 unsigned char _inb_p(unsigned long port)
169 {
170  unsigned char v = _inb(port);
171  delay();
172  return (v);
173 }
174 
175 unsigned short _inw_p(unsigned long port)
176 {
177  unsigned short v = _inw(port);
178  delay();
179  return (v);
180 }
181 
182 unsigned long _inl_p(unsigned long port)
183 {
184  unsigned long v = _inl(port);
185  delay();
186  return (v);
187 }
188 
189 void _outb(unsigned char b, unsigned long port)
190 {
191  if (port >= LAN_IOSTART && port < LAN_IOEND)
192  _ne_outb(b, PORT2ADDR_NE(port));
193  else
194 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
195  if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
196  *(volatile unsigned char *)__port2addr_ata(port) = b;
197  } else
198 #endif
199 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
200  if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
201  pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
202  } else
203 #endif
204  *(volatile unsigned char *)PORT2ADDR(port) = b;
205 }
206 
207 void _outw(unsigned short w, unsigned long port)
208 {
209  if (port >= LAN_IOSTART && port < LAN_IOEND)
210  _ne_outw(w, PORT2ADDR_NE(port));
211  else
212 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
213  if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
214  *(volatile unsigned short *)__port2addr_ata(port) = w;
215  } else
216 #endif
217 #if defined(CONFIG_USB)
218  if (port >= 0x340 && port < 0x3a0)
219  *(volatile unsigned short *)PORT2ADDR_USB(port) = w;
220  else
221 #endif
222 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
223  if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
224  pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
225  } else
226 #endif
227  *(volatile unsigned short *)PORT2ADDR(port) = w;
228 }
229 
230 void _outl(unsigned long l, unsigned long port)
231 {
232 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
233  if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
234  pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
235  } else
236 #endif
237  *(volatile unsigned long *)PORT2ADDR(port) = l;
238 }
239 
240 void _outb_p(unsigned char b, unsigned long port)
241 {
242  _outb(b, port);
243  delay();
244 }
245 
246 void _outw_p(unsigned short w, unsigned long port)
247 {
248  _outw(w, port);
249  delay();
250 }
251 
252 void _outl_p(unsigned long l, unsigned long port)
253 {
254  _outl(l, port);
255  delay();
256 }
257 
258 void _insb(unsigned int port, void * addr, unsigned long count)
259 {
260  if (port >= LAN_IOSTART && port < LAN_IOEND)
261  _ne_insb(PORT2ADDR_NE(port), addr, count);
262 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
263  else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
264  unsigned char *buf = addr;
265  unsigned char *portp = __port2addr_ata(port);
266  while (count--)
267  *buf++ = *(volatile unsigned char *)portp;
268  }
269 #endif
270 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
271  else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
272  pcc_ioread_byte(0, port, (void *)addr, sizeof(unsigned char),
273  count, 1);
274  }
275 #endif
276  else {
277  unsigned char *buf = addr;
278  unsigned char *portp = PORT2ADDR(port);
279  while (count--)
280  *buf++ = *(volatile unsigned char *)portp;
281  }
282 }
283 
284 void _insw(unsigned int port, void * addr, unsigned long count)
285 {
286  unsigned short *buf = addr;
287  unsigned short *portp;
288 
289  if (port >= LAN_IOSTART && port < LAN_IOEND) {
290  portp = PORT2ADDR_NE(port);
291  while (count--)
292  *buf++ = *(volatile unsigned short *)portp;
293 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
294  } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
295  pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
296  count, 1);
297 #endif
298 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
299  } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
300  portp = __port2addr_ata(port);
301  while (count--)
302  *buf++ = *(volatile unsigned short *)portp;
303 #endif
304  } else {
305  portp = PORT2ADDR(port);
306  while (count--)
307  *buf++ = *(volatile unsigned short *)portp;
308  }
309 }
310 
311 void _insl(unsigned int port, void * addr, unsigned long count)
312 {
313  unsigned long *buf = addr;
314  unsigned long *portp;
315 
316  portp = PORT2ADDR(port);
317  while (count--)
318  *buf++ = *(volatile unsigned long *)portp;
319 }
320 
321 void _outsb(unsigned int port, const void * addr, unsigned long count)
322 {
323  const unsigned char *buf = addr;
324  unsigned char *portp;
325 
326  if (port >= LAN_IOSTART && port < LAN_IOEND) {
327  portp = PORT2ADDR_NE(port);
328  while (count--)
329  _ne_outb(*buf++, portp);
330 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
331  } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
332  portp = __port2addr_ata(port);
333  while (count--)
334  *(volatile unsigned char *)portp = *buf++;
335 #endif
336 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
337  } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
338  pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
339  count, 1);
340 #endif
341  } else {
342  portp = PORT2ADDR(port);
343  while (count--)
344  *(volatile unsigned char *)portp = *buf++;
345  }
346 }
347 
348 void _outsw(unsigned int port, const void * addr, unsigned long count)
349 {
350  const unsigned short *buf = addr;
351  unsigned short *portp;
352 
353  if (port >= LAN_IOSTART && port < LAN_IOEND) {
354  portp = PORT2ADDR_NE(port);
355  while (count--)
356  *(volatile unsigned short *)portp = *buf++;
357 #if defined(CONFIG_IDE) && !defined(CONFIG_M32R_CFC)
358  } else if ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) {
359  portp = __port2addr_ata(port);
360  while (count--)
361  *(volatile unsigned short *)portp = *buf++;
362 #endif
363 #if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
364  } else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
365  pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
366  count, 1);
367 #endif
368  } else {
369  portp = PORT2ADDR(port);
370  while (count--)
371  *(volatile unsigned short *)portp = *buf++;
372  }
373 }
374 
375 void _outsl(unsigned int port, const void * addr, unsigned long count)
376 {
377  const unsigned long *buf = addr;
378  unsigned char *portp;
379 
380  portp = PORT2ADDR(port);
381  while (count--)
382  *(volatile unsigned long *)portp = *buf++;
383 }
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