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