1/*
2 *  linux/arch/m32r/platforms/mappi3/io.c
3 *
4 *  Typical I/O routines for Mappi3 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
23extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
24extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
25extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
26extern 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
33static inline void *_port2addr(unsigned long port)
34{
35	return (void *)(port | NONCACHE_OFFSET);
36}
37
38#if defined(CONFIG_IDE)
39static inline void *__port2addr_ata(unsigned long port)
40{
41	static int	dummy_reg;
42
43	switch (port) {
44	  /* IDE0 CF */
45	case 0x1f0:	return (void *)(0x14002000 | NONCACHE_OFFSET);
46	case 0x1f1:	return (void *)(0x14012800 | NONCACHE_OFFSET);
47	case 0x1f2:	return (void *)(0x14012002 | NONCACHE_OFFSET);
48	case 0x1f3:	return (void *)(0x14012802 | NONCACHE_OFFSET);
49	case 0x1f4:	return (void *)(0x14012004 | NONCACHE_OFFSET);
50	case 0x1f5:	return (void *)(0x14012804 | NONCACHE_OFFSET);
51	case 0x1f6:	return (void *)(0x14012006 | NONCACHE_OFFSET);
52	case 0x1f7:	return (void *)(0x14012806 | NONCACHE_OFFSET);
53	case 0x3f6:	return (void *)(0x1401200e | NONCACHE_OFFSET);
54	  /* IDE1 IDE */
55	case 0x170:	/* Data 16bit */
56			return (void *)(0x14810000 | NONCACHE_OFFSET);
57	case 0x171:	/* Features / Error */
58			return (void *)(0x14810002 | NONCACHE_OFFSET);
59	case 0x172:	/* Sector count */
60			return (void *)(0x14810004 | NONCACHE_OFFSET);
61	case 0x173:	/* Sector number */
62			return (void *)(0x14810006 | NONCACHE_OFFSET);
63	case 0x174:	/* Cylinder low */
64			return (void *)(0x14810008 | NONCACHE_OFFSET);
65	case 0x175:	/* Cylinder high */
66			return (void *)(0x1481000a | NONCACHE_OFFSET);
67	case 0x176:	/* Device head */
68			return (void *)(0x1481000c | NONCACHE_OFFSET);
69	case 0x177:	/* Command     */
70			return (void *)(0x1481000e | NONCACHE_OFFSET);
71	case 0x376:	/* Device control / Alt status */
72			return (void *)(0x1480800c | NONCACHE_OFFSET);
73
74	default: 	return (void *)&dummy_reg;
75	}
76}
77#endif
78
79#define LAN_IOSTART	(0x300 | NONCACHE_OFFSET)
80#define LAN_IOEND	(0x320 | NONCACHE_OFFSET)
81static inline void *_port2addr_ne(unsigned long port)
82{
83	return (void *)(port + 0x10000000);
84}
85
86static inline void *_port2addr_usb(unsigned long port)
87{
88	return (void *)(port + NONCACHE_OFFSET + 0x12000000);
89}
90static inline void delay(void)
91{
92	__asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
93}
94
95/*
96 * NIC I/O function
97 */
98
99static inline unsigned char _ne_inb(void *portp)
100{
101	return (unsigned char) *(volatile unsigned char *)portp;
102}
103
104static inline unsigned short _ne_inw(void *portp)
105{
106	return (unsigned short)le16_to_cpu(*(volatile unsigned short *)portp);
107}
108
109static inline void _ne_insb(void *portp, void * addr, unsigned long count)
110{
111	unsigned char *buf = addr;
112
113	while (count--)
114		*buf++ = *(volatile unsigned char *)portp;
115}
116
117static inline void _ne_outb(unsigned char b, void *portp)
118{
119	*(volatile unsigned char *)portp = (unsigned char)b;
120}
121
122static inline void _ne_outw(unsigned short w, void *portp)
123{
124	*(volatile unsigned short *)portp = cpu_to_le16(w);
125}
126
127unsigned char _inb(unsigned long port)
128{
129	if (port >= LAN_IOSTART && port < LAN_IOEND)
130		return _ne_inb(PORT2ADDR_NE(port));
131#if defined(CONFIG_IDE)
132	else if ( ((port >= 0x170 && port <=0x177) || port == 0x376) ||
133		  ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) ){
134		return *(volatile unsigned char *)__port2addr_ata(port);
135	}
136#endif
137#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
138	else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
139		unsigned char b;
140		pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
141		return b;
142	} else
143#endif
144	return *(volatile unsigned char *)PORT2ADDR(port);
145}
146
147unsigned short _inw(unsigned long port)
148{
149	if (port >= LAN_IOSTART && port < LAN_IOEND)
150		return _ne_inw(PORT2ADDR_NE(port));
151#if defined(CONFIG_IDE)
152	else if ( ((port >= 0x170 && port <=0x177) || port == 0x376) ||
153		  ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) ){
154		return *(volatile unsigned short *)__port2addr_ata(port);
155	}
156#endif
157#if defined(CONFIG_USB)
158	else if (port >= 0x340 && port < 0x3a0)
159		return *(volatile unsigned short *)PORT2ADDR_USB(port);
160#endif
161
162#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
163	else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
164		unsigned short w;
165		pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
166		return w;
167	} else
168#endif
169	return *(volatile unsigned short *)PORT2ADDR(port);
170}
171
172unsigned long _inl(unsigned long port)
173{
174#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
175	if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
176		unsigned long l;
177		pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
178		return l;
179	} else
180#endif
181	return *(volatile unsigned long *)PORT2ADDR(port);
182}
183
184unsigned char _inb_p(unsigned long port)
185{
186	unsigned char v = _inb(port);
187	delay();
188	return (v);
189}
190
191unsigned short _inw_p(unsigned long port)
192{
193	unsigned short v = _inw(port);
194	delay();
195	return (v);
196}
197
198unsigned long _inl_p(unsigned long port)
199{
200	unsigned long v = _inl(port);
201	delay();
202	return (v);
203}
204
205void _outb(unsigned char b, unsigned long port)
206{
207	if (port >= LAN_IOSTART && port < LAN_IOEND)
208		_ne_outb(b, PORT2ADDR_NE(port));
209	else
210#if defined(CONFIG_IDE)
211	if ( ((port >= 0x170 && port <=0x177) || port == 0x376) ||
212		  ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) ){
213		*(volatile unsigned char *)__port2addr_ata(port) = b;
214	} else
215#endif
216#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
217	if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
218		pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
219	} else
220#endif
221		*(volatile unsigned char *)PORT2ADDR(port) = b;
222}
223
224void _outw(unsigned short w, unsigned long port)
225{
226	if (port >= LAN_IOSTART && port < LAN_IOEND)
227		_ne_outw(w, PORT2ADDR_NE(port));
228	else
229#if defined(CONFIG_IDE)
230	if ( ((port >= 0x170 && port <=0x177) || port == 0x376) ||
231		  ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) ){
232		*(volatile unsigned short *)__port2addr_ata(port) = w;
233	} else
234#endif
235#if defined(CONFIG_USB)
236	if (port >= 0x340 && port < 0x3a0)
237		*(volatile unsigned short *)PORT2ADDR_USB(port) = w;
238	else
239#endif
240#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
241	if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
242		pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
243	} else
244#endif
245		*(volatile unsigned short *)PORT2ADDR(port) = w;
246}
247
248void _outl(unsigned long l, unsigned long port)
249{
250#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
251	if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
252		pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
253	} else
254#endif
255	*(volatile unsigned long *)PORT2ADDR(port) = l;
256}
257
258void _outb_p(unsigned char b, unsigned long port)
259{
260	_outb(b, port);
261	delay();
262}
263
264void _outw_p(unsigned short w, unsigned long port)
265{
266	_outw(w, port);
267	delay();
268}
269
270void _outl_p(unsigned long l, unsigned long port)
271{
272	_outl(l, port);
273	delay();
274}
275
276void _insb(unsigned int port, void * addr, unsigned long count)
277{
278	if (port >= LAN_IOSTART && port < LAN_IOEND)
279		_ne_insb(PORT2ADDR_NE(port), addr, count);
280#if defined(CONFIG_IDE)
281	else if ( ((port >= 0x170 && port <=0x177) || port == 0x376) ||
282		  ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) ){
283		unsigned char *buf = addr;
284		unsigned char *portp = __port2addr_ata(port);
285		while (count--)
286			*buf++ = *(volatile unsigned char *)portp;
287	}
288#endif
289#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
290	else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
291		pcc_ioread_byte(0, port, (void *)addr, sizeof(unsigned char),
292				count, 1);
293	}
294#endif
295	else {
296		unsigned char *buf = addr;
297		unsigned char *portp = PORT2ADDR(port);
298		while (count--)
299			*buf++ = *(volatile unsigned char *)portp;
300	}
301}
302
303void _insw(unsigned int port, void * addr, unsigned long count)
304{
305	unsigned short *buf = addr;
306	unsigned short *portp;
307
308	if (port >= LAN_IOSTART && port < LAN_IOEND) {
309		portp = PORT2ADDR_NE(port);
310		while (count--)
311			*buf++ = *(volatile unsigned short *)portp;
312#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
313	} else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
314		pcc_ioread_word(9, port, (void *)addr, sizeof(unsigned short),
315				count, 1);
316#endif
317#if defined(CONFIG_IDE)
318	} else if ( ((port >= 0x170 && port <=0x177) || port == 0x376) ||
319		  ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) ){
320		portp = __port2addr_ata(port);
321		while (count--)
322			*buf++ = *(volatile unsigned short *)portp;
323#endif
324	} else {
325		portp = PORT2ADDR(port);
326		while (count--)
327			*buf++ = *(volatile unsigned short *)portp;
328	}
329}
330
331void _insl(unsigned int port, void * addr, unsigned long count)
332{
333	unsigned long *buf = addr;
334	unsigned long *portp;
335
336	portp = PORT2ADDR(port);
337	while (count--)
338		*buf++ = *(volatile unsigned long *)portp;
339}
340
341void _outsb(unsigned int port, const void * addr, unsigned long count)
342{
343	const unsigned char *buf = addr;
344	unsigned char *portp;
345
346	if (port >= LAN_IOSTART && port < LAN_IOEND) {
347		portp = PORT2ADDR_NE(port);
348		while (count--)
349			_ne_outb(*buf++, portp);
350#if defined(CONFIG_IDE)
351	} else if ( ((port >= 0x170 && port <=0x177) || port == 0x376) ||
352		  ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) ){
353		portp = __port2addr_ata(port);
354		while (count--)
355			*(volatile unsigned char *)portp = *buf++;
356#endif
357#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
358	} else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
359		pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
360				 count, 1);
361#endif
362	} else {
363		portp = PORT2ADDR(port);
364		while (count--)
365			*(volatile unsigned char *)portp = *buf++;
366	}
367}
368
369void _outsw(unsigned int port, const void * addr, unsigned long count)
370{
371	const unsigned short *buf = addr;
372	unsigned short *portp;
373
374	if (port >= LAN_IOSTART && port < LAN_IOEND) {
375		portp = PORT2ADDR_NE(port);
376		while (count--)
377			*(volatile unsigned short *)portp = *buf++;
378#if defined(CONFIG_IDE)
379	} else if ( ((port >= 0x170 && port <=0x177) || port == 0x376) ||
380		  ((port >= 0x1f0 && port <=0x1f7) || port == 0x3f6) ){
381		portp = __port2addr_ata(port);
382		while (count--)
383			*(volatile unsigned short *)portp = *buf++;
384#endif
385#if defined(CONFIG_PCMCIA) && defined(CONFIG_M32R_CFC)
386	} else if (port >= M32R_PCC_IOSTART0 && port <= M32R_PCC_IOEND0) {
387		pcc_iowrite_word(9, port, (void *)addr, sizeof(unsigned short),
388				 count, 1);
389#endif
390	} else {
391		portp = PORT2ADDR(port);
392		while (count--)
393			*(volatile unsigned short *)portp = *buf++;
394	}
395}
396
397void _outsl(unsigned int port, const void * addr, unsigned long count)
398{
399	const unsigned long *buf = addr;
400	unsigned char *portp;
401
402	portp = PORT2ADDR(port);
403	while (count--)
404		*(volatile unsigned long *)portp = *buf++;
405}
406