File: /usr/src/linux/arch/sh/kernel/io_hd64461.c
1 /*
2 * $Id: io_hd64461.c,v 1.1 2000/06/10 21:45:18 yaegashi Exp $
3 * Copyright (C) 2000 YAEGASHI Takeshi
4 * Typical I/O routines for HD64461 system.
5 */
6
7 #include <linux/config.h>
8 #include <asm/io.h>
9 #include <asm/hd64461.h>
10
11 static __inline__ unsigned long PORT2ADDR(unsigned long port)
12 {
13 /* 16550A: HD64461 internal */
14 if (0x3f8<=port && port<=0x3ff)
15 return CONFIG_HD64461_IOBASE + 0x8000 + ((port-0x3f8)<<1);
16 if (0x2f8<=port && port<=0x2ff)
17 return CONFIG_HD64461_IOBASE + 0x7000 + ((port-0x2f8)<<1);
18
19 #ifdef CONFIG_HD64461_ENABLER
20 /* NE2000: HD64461 PCMCIA channel 0 (I/O) */
21 if (0x300<=port && port<=0x31f)
22 return 0xba000000 + port;
23
24 /* ide0: HD64461 PCMCIA channel 1 (memory) */
25 /* On HP690, CF in slot 1 is configured as a memory card
26 device. See CF+ and CompactFlash Specification for the
27 detail of CF's memory mapped addressing. */
28 if (0x1f0<=port && port<=0x1f7) return 0xb5000000 + port;
29 if (port == 0x3f6) return 0xb50001fe;
30 if (port == 0x3f7) return 0xb50001ff;
31
32 /* ide1 */
33 if (0x170<=port && port<=0x177) return 0xba000000 + port;
34 if (port == 0x376) return 0xba000376;
35 if (port == 0x377) return 0xba000377;
36 #endif
37
38 /* ??? */
39 if (port < 0x10000) return 0xa0000000 + port;
40
41 /* HD64461 internal devices (0xb0000000) */
42 if (port < 0x20000) return CONFIG_HD64461_IOBASE + port - 0x10000;
43
44 /* PCMCIA channel 0, I/O (0xba000000) */
45 if (port < 0x30000) return 0xba000000 + port - 0x20000;
46
47 /* PCMCIA channel 1, memory (0xb5000000) */
48 if (port < 0x40000) return 0xb5000000 + port - 0x30000;
49
50 /* Whole physical address space (0xa0000000) */
51 return 0xa0000000 + (port & 0x1fffffff);
52 }
53
54 static inline void delay(void)
55 {
56 ctrl_inw(0xa0000000);
57 }
58
59 unsigned char hd64461_inb(unsigned long port)
60 {
61 return *(volatile unsigned char*)PORT2ADDR(port);
62 }
63
64 unsigned char hd64461_inb_p(unsigned long port)
65 {
66 unsigned long v = *(volatile unsigned char*)PORT2ADDR(port);
67 delay();
68 return v;
69 }
70
71 unsigned short hd64461_inw(unsigned long port)
72 {
73 return *(volatile unsigned short*)PORT2ADDR(port);
74 }
75
76 unsigned int hd64461_inl(unsigned long port)
77 {
78 return *(volatile unsigned long*)PORT2ADDR(port);
79 }
80
81 void hd64461_insb(unsigned long port, void *buffer, unsigned long count)
82 {
83 unsigned char *buf=buffer;
84 while(count--) *buf++=inb(port);
85 }
86
87 void hd64461_insw(unsigned long port, void *buffer, unsigned long count)
88 {
89 unsigned short *buf=buffer;
90 while(count--) *buf++=inw(port);
91 }
92
93 void hd64461_insl(unsigned long port, void *buffer, unsigned long count)
94 {
95 unsigned long *buf=buffer;
96 while(count--) *buf++=inl(port);
97 }
98
99 void hd64461_outb(unsigned char b, unsigned long port)
100 {
101 *(volatile unsigned char*)PORT2ADDR(port) = b;
102 }
103
104 void hd64461_outb_p(unsigned char b, unsigned long port)
105 {
106 *(volatile unsigned char*)PORT2ADDR(port) = b;
107 delay();
108 }
109
110 void hd64461_outw(unsigned short b, unsigned long port)
111 {
112 *(volatile unsigned short*)PORT2ADDR(port) = b;
113 }
114
115 void hd64461_outl(unsigned int b, unsigned long port)
116 {
117 *(volatile unsigned long*)PORT2ADDR(port) = b;
118 }
119
120 void hd64461_outsb(unsigned long port, const void *buffer, unsigned long count)
121 {
122 const unsigned char *buf=buffer;
123 while(count--) outb(*buf++, port);
124 }
125
126 void hd64461_outsw(unsigned long port, const void *buffer, unsigned long count)
127 {
128 const unsigned short *buf=buffer;
129 while(count--) outw(*buf++, port);
130 }
131
132 void hd64461_outsl(unsigned long port, const void *buffer, unsigned long count)
133 {
134 const unsigned long *buf=buffer;
135 while(count--) outl(*buf++, port);
136 }
137