/arch/m32r/kernel/io_oaks32r.c

  1/*
  2 *  linux/arch/m32r/kernel/io_oaks32r.c
  3 *
  4 *  Typical I/O routines for OAKS32R board.
  5 *
  6 *  Copyright (c) 2001-2004  Hiroyuki Kondo, Hirokazu Takata,
  7 *                           Hitoshi Yamamoto, Mamoru Sakugawa
  8 */
  9
 10#include <linux/config.h>
 11#include <asm/m32r.h>
 12#include <asm/page.h>
 13#include <asm/io.h>
 14
 15#define PORT2ADDR(port)  _port2addr(port)
 16
 17static inline void *_port2addr(unsigned long port)
 18{
 19	return (void *)(port + NONCACHE_OFFSET);
 20}
 21
 22static inline  void *_port2addr_ne(unsigned long port)
 23{
 24	return (void *)((port<<1) + NONCACHE_OFFSET + 0x02000000);
 25}
 26
 27static inline void delay(void)
 28{
 29	__asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
 30}
 31
 32/*
 33 * NIC I/O function
 34 */
 35
 36#define PORT2ADDR_NE(port)  _port2addr_ne(port)
 37
 38static inline unsigned char _ne_inb(void *portp)
 39{
 40	return *(volatile unsigned char *)(portp+1);
 41}
 42
 43static inline unsigned short _ne_inw(void *portp)
 44{
 45	unsigned short tmp;
 46
 47	tmp = *(unsigned short *)(portp) & 0xff;
 48	tmp |= *(unsigned short *)(portp+2) << 8;
 49	return tmp;
 50}
 51
 52static inline  void _ne_insb(void *portp, void *addr, unsigned long count)
 53{
 54	unsigned char *buf = addr;
 55	while (count--)
 56		*buf++ = *(volatile unsigned char *)(portp+1);
 57}
 58
 59static inline void _ne_outb(unsigned char b, void *portp)
 60{
 61	*(volatile unsigned char *)(portp+1) = b;
 62}
 63
 64static inline void _ne_outw(unsigned short w, void *portp)
 65{
 66	*(volatile unsigned short *)portp =  (w >> 8);
 67	*(volatile unsigned short *)(portp+2) =  (w & 0xff);
 68}
 69
 70unsigned char _inb(unsigned long port)
 71{
 72	if (port >= 0x300 && port < 0x320)
 73		return _ne_inb(PORT2ADDR_NE(port));
 74
 75	return *(volatile unsigned char *)PORT2ADDR(port);
 76}
 77
 78unsigned short _inw(unsigned long port)
 79{
 80	if (port >= 0x300 && port < 0x320)
 81		return _ne_inw(PORT2ADDR_NE(port));
 82
 83	return *(volatile unsigned short *)PORT2ADDR(port);
 84}
 85
 86unsigned long _inl(unsigned long port)
 87{
 88	return *(volatile unsigned long *)PORT2ADDR(port);
 89}
 90
 91unsigned char _inb_p(unsigned long port)
 92{
 93	unsigned char  v;
 94
 95	if (port >= 0x300 && port < 0x320)
 96		v = _ne_inb(PORT2ADDR_NE(port));
 97	else
 98		v = *(volatile unsigned char *)PORT2ADDR(port);
 99
100	delay();
101	return (v);
102}
103
104unsigned short _inw_p(unsigned long port)
105{
106	unsigned short  v;
107
108	if (port >= 0x300 && port < 0x320)
109		v = _ne_inw(PORT2ADDR_NE(port));
110	else
111		v = *(volatile unsigned short *)PORT2ADDR(port);
112
113	delay();
114	return (v);
115}
116
117unsigned long _inl_p(unsigned long port)
118{
119	unsigned long  v;
120
121	v = *(volatile unsigned long *)PORT2ADDR(port);
122	delay();
123	return (v);
124}
125
126void _outb(unsigned char b, unsigned long port)
127{
128	if (port >= 0x300 && port < 0x320)
129		_ne_outb(b, PORT2ADDR_NE(port));
130	else
131		*(volatile unsigned char *)PORT2ADDR(port) = b;
132}
133
134void _outw(unsigned short w, unsigned long port)
135{
136	if (port >= 0x300 && port < 0x320)
137		_ne_outw(w, PORT2ADDR_NE(port));
138	else
139		*(volatile unsigned short *)PORT2ADDR(port) = w;
140}
141
142void _outl(unsigned long l, unsigned long port)
143{
144	*(volatile unsigned long *)PORT2ADDR(port) = l;
145}
146
147void _outb_p(unsigned char b, unsigned long port)
148{
149	if (port >= 0x300 && port < 0x320)
150		_ne_outb(b, PORT2ADDR_NE(port));
151	else
152		*(volatile unsigned char *)PORT2ADDR(port) = b;
153
154	delay();
155}
156
157void _outw_p(unsigned short w, unsigned long port)
158{
159	if (port >= 0x300 && port < 0x320)
160		_ne_outw(w, PORT2ADDR_NE(port));
161	else
162		*(volatile unsigned short *)PORT2ADDR(port) = w;
163
164	delay();
165}
166
167void _outl_p(unsigned long l, unsigned long port)
168{
169	*(volatile unsigned long *)PORT2ADDR(port) = l;
170	delay();
171}
172
173void _insb(unsigned int port, void *addr, unsigned long count)
174{
175	if (port >= 0x300 && port < 0x320)
176		_ne_insb(PORT2ADDR_NE(port), addr, count);
177	else {
178		unsigned char *buf = addr;
179		unsigned char *portp = PORT2ADDR(port);
180		while (count--)
181			*buf++ = *(volatile unsigned char *)portp;
182	}
183}
184
185void _insw(unsigned int port, void *addr, unsigned long count)
186{
187	unsigned short *buf = addr;
188	unsigned short *portp;
189
190	if (port >= 0x300 && port < 0x320) {
191		portp = PORT2ADDR_NE(port);
192		while (count--)
193			*buf++ = _ne_inw(portp);
194	} else {
195		portp = PORT2ADDR(port);
196		while (count--)
197			*buf++ = *(volatile unsigned short *)portp;
198	}
199}
200
201void _insl(unsigned int port, void *addr, unsigned long count)
202{
203	unsigned long *buf = addr;
204	unsigned long *portp;
205
206	portp = PORT2ADDR(port);
207	while (count--)
208		*buf++ = *(volatile unsigned long *)portp;
209}
210
211void _outsb(unsigned int port, const void *addr, unsigned long count)
212{
213	const unsigned char *buf = addr;
214	unsigned char *portp;
215
216	if (port >= 0x300 && port < 0x320) {
217		portp = PORT2ADDR_NE(port);
218		while (count--)
219			_ne_outb(*buf++, portp);
220	} else {
221		portp = PORT2ADDR(port);
222		while (count--)
223			*(volatile unsigned char *)portp = *buf++;
224	}
225}
226
227void _outsw(unsigned int port, const void *addr, unsigned long count)
228{
229	const unsigned short *buf = addr;
230	unsigned short *portp;
231
232	if (port >= 0x300 && port < 0x320) {
233		portp = PORT2ADDR_NE(port);
234		while (count--)
235			_ne_outw(*buf++, portp);
236	} else {
237		portp = PORT2ADDR(port);
238		while (count--)
239			*(volatile unsigned short *)portp = *buf++;
240	}
241}
242
243void _outsl(unsigned int port, const void *addr, unsigned long count)
244{
245	const unsigned long *buf = addr;
246	unsigned char *portp;
247
248	portp = PORT2ADDR(port);
249	while (count--)
250		*(volatile unsigned long *)portp = *buf++;
251}