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Linux/arch/m32r/platforms/oaks32r/io.c

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  1 /*
  2  *  linux/arch/m32r/platforms/oaks32r/io.c
  3  *
  4  *  Typical I/O routines for OAKS32R 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 
 14 #define PORT2ADDR(port)  _port2addr(port)
 15 
 16 static inline void *_port2addr(unsigned long port)
 17 {
 18         return (void *)(port | NONCACHE_OFFSET);
 19 }
 20 
 21 static inline  void *_port2addr_ne(unsigned long port)
 22 {
 23         return (void *)((port<<1) + NONCACHE_OFFSET + 0x02000000);
 24 }
 25 
 26 static inline void delay(void)
 27 {
 28         __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
 29 }
 30 
 31 /*
 32  * NIC I/O function
 33  */
 34 
 35 #define PORT2ADDR_NE(port)  _port2addr_ne(port)
 36 
 37 static inline unsigned char _ne_inb(void *portp)
 38 {
 39         return *(volatile unsigned char *)(portp+1);
 40 }
 41 
 42 static inline unsigned short _ne_inw(void *portp)
 43 {
 44         unsigned short tmp;
 45 
 46         tmp = *(unsigned short *)(portp) & 0xff;
 47         tmp |= *(unsigned short *)(portp+2) << 8;
 48         return tmp;
 49 }
 50 
 51 static inline  void _ne_insb(void *portp, void *addr, unsigned long count)
 52 {
 53         unsigned char *buf = addr;
 54         while (count--)
 55                 *buf++ = *(volatile unsigned char *)(portp+1);
 56 }
 57 
 58 static inline void _ne_outb(unsigned char b, void *portp)
 59 {
 60         *(volatile unsigned char *)(portp+1) = b;
 61 }
 62 
 63 static inline void _ne_outw(unsigned short w, void *portp)
 64 {
 65         *(volatile unsigned short *)portp =  (w >> 8);
 66         *(volatile unsigned short *)(portp+2) =  (w & 0xff);
 67 }
 68 
 69 unsigned char _inb(unsigned long port)
 70 {
 71         if (port >= 0x300 && port < 0x320)
 72                 return _ne_inb(PORT2ADDR_NE(port));
 73 
 74         return *(volatile unsigned char *)PORT2ADDR(port);
 75 }
 76 
 77 unsigned short _inw(unsigned long port)
 78 {
 79         if (port >= 0x300 && port < 0x320)
 80                 return _ne_inw(PORT2ADDR_NE(port));
 81 
 82         return *(volatile unsigned short *)PORT2ADDR(port);
 83 }
 84 
 85 unsigned long _inl(unsigned long port)
 86 {
 87         return *(volatile unsigned long *)PORT2ADDR(port);
 88 }
 89 
 90 unsigned char _inb_p(unsigned long port)
 91 {
 92         unsigned char v = _inb(port);
 93         delay();
 94         return (v);
 95 }
 96 
 97 unsigned short _inw_p(unsigned long port)
 98 {
 99         unsigned short v = _inw(port);
100         delay();
101         return (v);
102 }
103 
104 unsigned long _inl_p(unsigned long port)
105 {
106         unsigned long v = _inl(port);
107         delay();
108         return (v);
109 }
110 
111 void _outb(unsigned char b, unsigned long port)
112 {
113         if (port >= 0x300 && port < 0x320)
114                 _ne_outb(b, PORT2ADDR_NE(port));
115         else
116                 *(volatile unsigned char *)PORT2ADDR(port) = b;
117 }
118 
119 void _outw(unsigned short w, unsigned long port)
120 {
121         if (port >= 0x300 && port < 0x320)
122                 _ne_outw(w, PORT2ADDR_NE(port));
123         else
124                 *(volatile unsigned short *)PORT2ADDR(port) = w;
125 }
126 
127 void _outl(unsigned long l, unsigned long port)
128 {
129         *(volatile unsigned long *)PORT2ADDR(port) = l;
130 }
131 
132 void _outb_p(unsigned char b, unsigned long port)
133 {
134         _outb(b, port);
135         delay();
136 }
137 
138 void _outw_p(unsigned short w, unsigned long port)
139 {
140         _outw(w, port);
141         delay();
142 }
143 
144 void _outl_p(unsigned long l, unsigned long port)
145 {
146         _outl(l, port);
147         delay();
148 }
149 
150 void _insb(unsigned int port, void *addr, unsigned long count)
151 {
152         if (port >= 0x300 && port < 0x320)
153                 _ne_insb(PORT2ADDR_NE(port), addr, count);
154         else {
155                 unsigned char *buf = addr;
156                 unsigned char *portp = PORT2ADDR(port);
157                 while (count--)
158                         *buf++ = *(volatile unsigned char *)portp;
159         }
160 }
161 
162 void _insw(unsigned int port, void *addr, unsigned long count)
163 {
164         unsigned short *buf = addr;
165         unsigned short *portp;
166 
167         if (port >= 0x300 && port < 0x320) {
168                 portp = PORT2ADDR_NE(port);
169                 while (count--)
170                         *buf++ = _ne_inw(portp);
171         } else {
172                 portp = PORT2ADDR(port);
173                 while (count--)
174                         *buf++ = *(volatile unsigned short *)portp;
175         }
176 }
177 
178 void _insl(unsigned int port, void *addr, unsigned long count)
179 {
180         unsigned long *buf = addr;
181         unsigned long *portp;
182 
183         portp = PORT2ADDR(port);
184         while (count--)
185                 *buf++ = *(volatile unsigned long *)portp;
186 }
187 
188 void _outsb(unsigned int port, const void *addr, unsigned long count)
189 {
190         const unsigned char *buf = addr;
191         unsigned char *portp;
192 
193         if (port >= 0x300 && port < 0x320) {
194                 portp = PORT2ADDR_NE(port);
195                 while (count--)
196                         _ne_outb(*buf++, portp);
197         } else {
198                 portp = PORT2ADDR(port);
199                 while (count--)
200                         *(volatile unsigned char *)portp = *buf++;
201         }
202 }
203 
204 void _outsw(unsigned int port, const void *addr, unsigned long count)
205 {
206         const unsigned short *buf = addr;
207         unsigned short *portp;
208 
209         if (port >= 0x300 && port < 0x320) {
210                 portp = PORT2ADDR_NE(port);
211                 while (count--)
212                         _ne_outw(*buf++, portp);
213         } else {
214                 portp = PORT2ADDR(port);
215                 while (count--)
216                         *(volatile unsigned short *)portp = *buf++;
217         }
218 }
219 
220 void _outsl(unsigned int port, const void *addr, unsigned long count)
221 {
222         const unsigned long *buf = addr;
223         unsigned char *portp;
224 
225         portp = PORT2ADDR(port);
226         while (count--)
227                 *(volatile unsigned long *)portp = *buf++;
228 }
229 

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