2 * linux/arch/m32r/kernel/io_usrv.c
4 * Typical I/O routines for uServer board.
6 * Copyright (c) 2001-2005 Hiroyuki Kondo, Hirokazu Takata,
7 * Hitoshi Yamamoto, Takeo Takahashi
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.
15 #include <linux/config.h>
20 #include <linux/types.h>
21 #include "../drivers/m32r_cfc.h"
23 extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
24 extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
25 extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
26 extern void pcc_iowrite_word(int, unsigned long, void *, size_t, size_t, int);
27 #define CFC_IOSTART CFC_IOPORT_BASE
28 #define CFC_IOEND (CFC_IOSTART + (M32R_PCC_MAPSIZE * M32R_MAX_PCC) - 1)
30 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
31 #define UART0_REGSTART 0x04c20000
32 #define UART1_REGSTART 0x04c20100
33 #define UART_IOMAP_SIZE 8
34 #define UART0_IOSTART 0x3f8
35 #define UART0_IOEND (UART0_IOSTART + UART_IOMAP_SIZE - 1)
36 #define UART1_IOSTART 0x2f8
37 #define UART1_IOEND (UART1_IOSTART + UART_IOMAP_SIZE - 1)
38 #endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
40 #define PORT2ADDR(port) _port2addr(port)
42 static inline void *_port2addr(unsigned long port)
44 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
45 if (port >= UART0_IOSTART && port <= UART0_IOEND)
46 port = ((port - UART0_IOSTART) << 1) + UART0_REGSTART;
47 else if (port >= UART1_IOSTART && port <= UART1_IOEND)
48 port = ((port - UART1_IOSTART) << 1) + UART1_REGSTART;
49 #endif /* CONFIG_SERIAL_8250 || CONFIG_SERIAL_8250_MODULE */
50 return (void *)(port + NONCACHE_OFFSET);
53 static inline void delay(void)
55 __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
58 unsigned char _inb(unsigned long port)
60 if (port >= CFC_IOSTART && port <= CFC_IOEND) {
62 pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0);
65 return *(volatile unsigned char *)PORT2ADDR(port);
68 unsigned short _inw(unsigned long port)
70 if (port >= CFC_IOSTART && port <= CFC_IOEND) {
72 pcc_ioread_word(0, port, &w, sizeof(w), 1, 0);
75 return *(volatile unsigned short *)PORT2ADDR(port);
78 unsigned long _inl(unsigned long port)
80 if (port >= CFC_IOSTART && port <= CFC_IOEND) {
82 pcc_ioread_word(0, port, &l, sizeof(l), 1, 0);
85 return *(volatile unsigned long *)PORT2ADDR(port);
88 unsigned char _inb_p(unsigned long port)
90 unsigned char v = _inb(port);
95 unsigned short _inw_p(unsigned long port)
97 unsigned short v = _inw(port);
102 unsigned long _inl_p(unsigned long port)
104 unsigned long v = _inl(port);
109 void _outb(unsigned char b, unsigned long port)
111 if (port >= CFC_IOSTART && port <= CFC_IOEND)
112 pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0);
114 *(volatile unsigned char *)PORT2ADDR(port) = b;
117 void _outw(unsigned short w, unsigned long port)
119 if (port >= CFC_IOSTART && port <= CFC_IOEND)
120 pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0);
122 *(volatile unsigned short *)PORT2ADDR(port) = w;
125 void _outl(unsigned long l, unsigned long port)
127 if (port >= CFC_IOSTART && port <= CFC_IOEND)
128 pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0);
130 *(volatile unsigned long *)PORT2ADDR(port) = l;
133 void _outb_p(unsigned char b, unsigned long port)
139 void _outw_p(unsigned short w, unsigned long port)
145 void _outl_p(unsigned long l, unsigned long port)
151 void _insb(unsigned int port, void * addr, unsigned long count)
153 if (port >= CFC_IOSTART && port <= CFC_IOEND)
154 pcc_ioread_byte(0, port, addr, sizeof(unsigned char), count, 1);
156 unsigned char *buf = addr;
157 unsigned char *portp = PORT2ADDR(port);
159 *buf++ = *(volatile unsigned char *)portp;
163 void _insw(unsigned int port, void * addr, unsigned long count)
165 unsigned short *buf = addr;
166 unsigned short *portp;
168 if (port >= CFC_IOSTART && port <= CFC_IOEND)
169 pcc_ioread_word(0, port, addr, sizeof(unsigned short), count,
172 portp = PORT2ADDR(port);
174 *buf++ = *(volatile unsigned short *)portp;
178 void _insl(unsigned int port, void * addr, unsigned long count)
180 unsigned long *buf = addr;
181 unsigned long *portp;
183 portp = PORT2ADDR(port);
185 *buf++ = *(volatile unsigned long *)portp;
188 void _outsb(unsigned int port, const void * addr, unsigned long count)
190 const unsigned char *buf = addr;
191 unsigned char *portp;
193 if (port >= CFC_IOSTART && port <= CFC_IOEND)
194 pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char),
197 portp = PORT2ADDR(port);
199 *(volatile unsigned char *)portp = *buf++;
203 void _outsw(unsigned int port, const void * addr, unsigned long count)
205 const unsigned short *buf = addr;
206 unsigned short *portp;
208 if (port >= CFC_IOSTART && port <= CFC_IOEND)
209 pcc_iowrite_word(0, port, (void *)addr, sizeof(unsigned short),
212 portp = PORT2ADDR(port);
214 *(volatile unsigned short *)portp = *buf++;
218 void _outsl(unsigned int port, const void * addr, unsigned long count)
220 const unsigned long *buf = addr;
221 unsigned char *portp;
223 portp = PORT2ADDR(port);
225 *(volatile unsigned long *)portp = *buf++;