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
22 extern void pcc_ioread_byte(int, unsigned long, void *, size_t, size_t, int);
23 extern void pcc_ioread_word(int, unsigned long, void *, size_t, size_t, int);
24 extern void pcc_iowrite_byte(int, unsigned long, void *, size_t, size_t, int);
25 extern 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
_port2addr(unsigned long port)41 static 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
delay(void)52 static inline void delay(void)
53 {
54 __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory");
55 }
56
_inb(unsigned long port)57 unsigned 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
_inw(unsigned long port)67 unsigned 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
_inl(unsigned long port)77 unsigned 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
_inb_p(unsigned long port)87 unsigned char _inb_p(unsigned long port)
88 {
89 unsigned char v = _inb(port);
90 delay();
91 return v;
92 }
93
_inw_p(unsigned long port)94 unsigned short _inw_p(unsigned long port)
95 {
96 unsigned short v = _inw(port);
97 delay();
98 return v;
99 }
100
_inl_p(unsigned long port)101 unsigned long _inl_p(unsigned long port)
102 {
103 unsigned long v = _inl(port);
104 delay();
105 return v;
106 }
107
_outb(unsigned char b,unsigned long port)108 void _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
_outw(unsigned short w,unsigned long port)116 void _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
_outl(unsigned long l,unsigned long port)124 void _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
_outb_p(unsigned char b,unsigned long port)132 void _outb_p(unsigned char b, unsigned long port)
133 {
134 _outb(b, port);
135 delay();
136 }
137
_outw_p(unsigned short w,unsigned long port)138 void _outw_p(unsigned short w, unsigned long port)
139 {
140 _outw(w, port);
141 delay();
142 }
143
_outl_p(unsigned long l,unsigned long port)144 void _outl_p(unsigned long l, unsigned long port)
145 {
146 _outl(l, port);
147 delay();
148 }
149
_insb(unsigned int port,void * addr,unsigned long count)150 void _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
_insw(unsigned int port,void * addr,unsigned long count)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 >= 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
_insl(unsigned int port,void * addr,unsigned long count)177 void _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
_outsb(unsigned int port,const void * addr,unsigned long count)187 void _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
_outsw(unsigned int port,const void * addr,unsigned long count)202 void _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
_outsl(unsigned int port,const void * addr,unsigned long count)217 void _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 }
226