1/*
  2 *  linux/arch/m32r/platforms/usrv/io.c
  3 *
  4 *  Typical I/O routines for uServer 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
 15#include <asm/m32r.h>
 16#include <asm/page.h>
 17#include <asm/io.h>
 18
 19#include <linux/types.h>
 20#include "../../../../drivers/pcmcia/m32r_cfc.h"
 21
 22extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
 23extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
 24extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
 25extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
 26#define CFC_IOSTART	CFC_IOPORT_BASE
 27#define CFC_IOEND	(CFC_IOSTART + (M32R_PCC_MAPSIZE * M32R_MAX_PCC) - 1)
 28
 29#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
 30#define UART0_REGSTART		0x04c20000
 31#define UART1_REGSTART		0x04c20100
 32#define UART_IOMAP_SIZE		8
 33#define UART0_IOSTART		0x3f8
 34#define UART0_IOEND		(UART0_IOSTART + UART_IOMAP_SIZE - 1)
 35#define UART1_IOSTART		0x2f8
 36#define UART1_IOEND		(UART1_IOSTART + UART_IOMAP_SIZE - 1)
 37#endif	/* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
 38
 39#define PORT2ADDR(port)	_port2addr(port)
 40
 41static inline void *_port2addr(unsigned long port)
 42{
 43#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
 44	if (port >= UART0_IOSTART && port <= UART0_IOEND)
 45		port = ((port - UART0_IOSTART) << 1) + UART0_REGSTART;
 46	else if (port >= UART1_IOSTART && port <= UART1_IOEND)
 47		port = ((port - UART1_IOSTART) << 1) + UART1_REGSTART;
 48#endif	/* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
 49	return (void *)(port | (NONCACHE_OFFSET));
 50}
 51
 52static inline void delay(void)
 53{
 54	__asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
 55}
 56
 57unsigned char _inb(unsigned long port)
 58{
 59	if (port >= CFC_IOSTART && port <= CFC_IOEND) {
 60		unsigned char b;
 61		pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
 62		return b;
 63	} else
 64		return *(volatile unsigned char *)PORT2ADDR(port);
 65}
 66
 67unsigned short _inw(unsigned long port)
 68{
 69	if (port >= CFC_IOSTART && port <= CFC_IOEND) {
 70		unsigned short w;
 71		pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
 72		return w;
 73	} else
 74		return *(volatile unsigned short *)PORT2ADDR(port);
 75}
 76
 77unsigned long _inl(unsigned long port)
 78{
 79	if (port >= CFC_IOSTART && port <= CFC_IOEND) {
 80		unsigned long l;
 81		pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
 82		return l;
 83	} else
 84		return *(volatile unsigned long *)PORT2ADDR(port);
 85}
 86
 87unsigned char _inb_p(unsigned long port)
 88{
 89	unsigned char v = _inb(port);
 90	delay();
 91	return v;
 92}
 93
 94unsigned short _inw_p(unsigned long port)
 95{
 96	unsigned short v = _inw(port);
 97	delay();
 98	return v;
 99}
100
101unsigned long _inl_p(unsigned long port)
102{
103	unsigned long v = _inl(port);
104	delay();
105	return v;
106}
107
108void _outb(unsigned char b, unsigned long port)
109{
110	if (port >= CFC_IOSTART && port <= CFC_IOEND)
111		pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
112	else
113		*(volatile unsigned char *)PORT2ADDR(port) = b;
114}
115
116void _outw(unsigned short w, unsigned long port)
117{
118	if (port >= CFC_IOSTART && port <= CFC_IOEND)
119		pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
120	else
121		*(volatile unsigned short *)PORT2ADDR(port) = w;
122}
123
124void _outl(unsigned long l, unsigned long port)
125{
126	if (port >= CFC_IOSTART && port <= CFC_IOEND)
127		pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
128	else
129		*(volatile unsigned long *)PORT2ADDR(port) = l;
130}
131
132void _outb_p(unsigned char b, unsigned long port)
133{
134	_outb(b, port);
135	delay();
136}
137
138void _outw_p(unsigned short w, unsigned long port)
139{
140	_outw(w, port);
141	delay();
142}
143
144void _outl_p(unsigned long l, unsigned long port)
145{
146	_outl(l, port);
147	delay();
148}
149
150void _insb(unsigned int port, void * addr, unsigned long count)
151{
152	if (port >= CFC_IOSTART && port <= CFC_IOEND)
153		pcc_ioread_byte(0, port, addr, sizeof(unsigned char), count, 1);
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
162void _insw(unsigned int port, void * addr, unsigned long count)
163{
164	unsigned short *buf = addr;
165	unsigned short *portp;
166
167	if (port >= CFC_IOSTART && port <= CFC_IOEND)
168		pcc_ioread_word(0, port, addr, sizeof(unsigned short), count,
169			1);
170	else {
171		portp = PORT2ADDR(port);
172		while (count--)
173			*buf++ = *(volatile unsigned short *)portp;
174	}
175}
176
177void _insl(unsigned int port, void * addr, unsigned long count)
178{
179	unsigned long *buf = addr;
180	unsigned long *portp;
181
182	portp = PORT2ADDR(port);
183	while (count--)
184		*buf++ = *(volatile unsigned long *)portp;
185}
186
187void _outsb(unsigned int port, const void * addr, unsigned long count)
188{
189	const unsigned char *buf = addr;
190	unsigned char *portp;
191
192	if (port >= CFC_IOSTART && port <= CFC_IOEND)
193		pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
194			count, 1);
195	else {
196		portp = PORT2ADDR(port);
197		while (count--)
198			*(volatile unsigned char *)portp = *buf++;
199	}
200}
201
202void _outsw(unsigned int port, const void * addr, unsigned long count)
203{
204	const unsigned short *buf = addr;
205	unsigned short *portp;
206
207	if (port >= CFC_IOSTART && port <= CFC_IOEND)
208		pcc_iowrite_word(0, port, (void *)addr, sizeof(unsigned short),
209			count, 1);
210	else {
211		portp = PORT2ADDR(port);
212		while (count--)
213			*(volatile unsigned short *)portp = *buf++;
214	}
215}
216
217void _outsl(unsigned int port, const void * addr, unsigned long count)
218{
219	const unsigned long *buf = addr;
220	unsigned char *portp;
221
222	portp = PORT2ADDR(port);
223	while (count--)
224		*(volatile unsigned long *)portp = *buf++;
225}