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Linux/arch/m32r/platforms/m32700ut/io.c

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  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 }
396 

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