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1da177e4 LT |
1 | /* |
2 | * linux/arch/m32r/kernel/io_usrv.c | |
3 | * | |
4 | * Typical I/O routines for uServer board. | |
5 | * | |
23680863 HT |
6 | * Copyright (c) 2001-2005 Hiroyuki Kondo, Hirokazu Takata, |
7 | * Hitoshi Yamamoto, Takeo Takahashi | |
1da177e4 LT |
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 <linux/config.h> | |
16 | #include <asm/m32r.h> | |
17 | #include <asm/page.h> | |
18 | #include <asm/io.h> | |
19 | ||
20 | #include <linux/types.h> | |
21 | #include "../drivers/m32r_cfc.h" | |
22 | ||
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) | |
29 | ||
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 */ | |
39 | ||
40 | #define PORT2ADDR(port) _port2addr(port) | |
41 | ||
23680863 | 42 | static inline void *_port2addr(unsigned long port) |
1da177e4 LT |
43 | { |
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 */ | |
1343f776 | 50 | return (void *)(port | (NONCACHE_OFFSET)); |
1da177e4 LT |
51 | } |
52 | ||
23680863 | 53 | static inline void delay(void) |
1da177e4 LT |
54 | { |
55 | __asm__ __volatile__ ("push r0; \n\t pop r0;" : : :"memory"); | |
56 | } | |
57 | ||
58 | unsigned char _inb(unsigned long port) | |
59 | { | |
60 | if (port >= CFC_IOSTART && port <= CFC_IOEND) { | |
61 | unsigned char b; | |
62 | pcc_ioread_byte(0, port, &b, sizeof(b), 1, 0); | |
63 | return b; | |
64 | } else | |
65 | return *(volatile unsigned char *)PORT2ADDR(port); | |
66 | } | |
67 | ||
68 | unsigned short _inw(unsigned long port) | |
69 | { | |
70 | if (port >= CFC_IOSTART && port <= CFC_IOEND) { | |
71 | unsigned short w; | |
72 | pcc_ioread_word(0, port, &w, sizeof(w), 1, 0); | |
73 | return w; | |
74 | } else | |
75 | return *(volatile unsigned short *)PORT2ADDR(port); | |
76 | } | |
77 | ||
78 | unsigned long _inl(unsigned long port) | |
79 | { | |
80 | if (port >= CFC_IOSTART && port <= CFC_IOEND) { | |
81 | unsigned long l; | |
82 | pcc_ioread_word(0, port, &l, sizeof(l), 1, 0); | |
83 | return l; | |
84 | } else | |
85 | return *(volatile unsigned long *)PORT2ADDR(port); | |
86 | } | |
87 | ||
88 | unsigned char _inb_p(unsigned long port) | |
89 | { | |
23680863 HT |
90 | unsigned char v = _inb(port); |
91 | delay(); | |
92 | return v; | |
1da177e4 LT |
93 | } |
94 | ||
95 | unsigned short _inw_p(unsigned long port) | |
96 | { | |
23680863 HT |
97 | unsigned short v = _inw(port); |
98 | delay(); | |
99 | return v; | |
1da177e4 LT |
100 | } |
101 | ||
102 | unsigned long _inl_p(unsigned long port) | |
103 | { | |
23680863 | 104 | unsigned long v = _inl(port); |
1da177e4 | 105 | delay(); |
1da177e4 LT |
106 | return v; |
107 | } | |
108 | ||
109 | void _outb(unsigned char b, unsigned long port) | |
110 | { | |
111 | if (port >= CFC_IOSTART && port <= CFC_IOEND) | |
112 | pcc_iowrite_byte(0, port, &b, sizeof(b), 1, 0); | |
113 | else | |
114 | *(volatile unsigned char *)PORT2ADDR(port) = b; | |
115 | } | |
116 | ||
117 | void _outw(unsigned short w, unsigned long port) | |
118 | { | |
119 | if (port >= CFC_IOSTART && port <= CFC_IOEND) | |
120 | pcc_iowrite_word(0, port, &w, sizeof(w), 1, 0); | |
121 | else | |
122 | *(volatile unsigned short *)PORT2ADDR(port) = w; | |
123 | } | |
124 | ||
125 | void _outl(unsigned long l, unsigned long port) | |
126 | { | |
127 | if (port >= CFC_IOSTART && port <= CFC_IOEND) | |
128 | pcc_iowrite_word(0, port, &l, sizeof(l), 1, 0); | |
129 | else | |
130 | *(volatile unsigned long *)PORT2ADDR(port) = l; | |
131 | } | |
132 | ||
133 | void _outb_p(unsigned char b, unsigned long port) | |
134 | { | |
23680863 | 135 | _outb(b, port); |
1da177e4 LT |
136 | delay(); |
137 | } | |
138 | ||
139 | void _outw_p(unsigned short w, unsigned long port) | |
140 | { | |
23680863 | 141 | _outw(w, port); |
1da177e4 LT |
142 | delay(); |
143 | } | |
144 | ||
145 | void _outl_p(unsigned long l, unsigned long port) | |
146 | { | |
23680863 | 147 | _outl(l, port); |
1da177e4 LT |
148 | delay(); |
149 | } | |
150 | ||
151 | void _insb(unsigned int port, void * addr, unsigned long count) | |
152 | { | |
153 | if (port >= CFC_IOSTART && port <= CFC_IOEND) | |
154 | pcc_ioread_byte(0, port, addr, sizeof(unsigned char), count, 1); | |
155 | else { | |
156 | unsigned char *buf = addr; | |
157 | unsigned char *portp = PORT2ADDR(port); | |
158 | while (count--) | |
159 | *buf++ = *(volatile unsigned char *)portp; | |
160 | } | |
161 | } | |
162 | ||
163 | void _insw(unsigned int port, void * addr, unsigned long count) | |
164 | { | |
165 | unsigned short *buf = addr; | |
166 | unsigned short *portp; | |
167 | ||
168 | if (port >= CFC_IOSTART && port <= CFC_IOEND) | |
169 | pcc_ioread_word(0, port, addr, sizeof(unsigned short), count, | |
170 | 1); | |
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 >= CFC_IOSTART && port <= CFC_IOEND) | |
194 | pcc_iowrite_byte(0, port, (void *)addr, sizeof(unsigned char), | |
195 | count, 1); | |
196 | else { | |
197 | portp = PORT2ADDR(port); | |
198 | while (count--) | |
199 | *(volatile unsigned char *)portp = *buf++; | |
200 | } | |
201 | } | |
202 | ||
203 | void _outsw(unsigned int port, const void * addr, unsigned long count) | |
204 | { | |
205 | const unsigned short *buf = addr; | |
206 | unsigned short *portp; | |
207 | ||
208 | if (port >= CFC_IOSTART && port <= CFC_IOEND) | |
209 | pcc_iowrite_word(0, port, (void *)addr, sizeof(unsigned short), | |
210 | count, 1); | |
211 | else { | |
212 | portp = PORT2ADDR(port); | |
213 | while (count--) | |
214 | *(volatile unsigned short *)portp = *buf++; | |
215 | } | |
216 | } | |
217 | ||
218 | void _outsl(unsigned int port, const void * addr, unsigned long count) | |
219 | { | |
220 | const unsigned long *buf = addr; | |
221 | unsigned char *portp; | |
222 | ||
223 | portp = PORT2ADDR(port); | |
224 | while (count--) | |
225 | *(volatile unsigned long *)portp = *buf++; | |
226 | } |