aboutsummaryrefslogtreecommitdiff
path: root/arch/sh/boards/mach-systemh/io.c
blob: 15577ff1f7153b68a0b3432183266a194625c381 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
/*
 * linux/arch/sh/boards/renesas/systemh/io.c
 *
 * Copyright (C) 2001  Ian da Silva, Jeremy Siegel
 * Based largely on io_se.c.
 *
 * I/O routine for Hitachi 7751 Systemh.
 */
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <mach/systemh7751.h>
#include <asm/addrspace.h>
#include <asm/io.h>

#define ETHER_IOMAP(adr) (0xB3000000 + (adr)) /*map to 16bits access area
                                                of smc lan chip*/
static inline volatile __u16 *
port2adr(unsigned int port)
{
	if (port >= 0x2000)
		return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
	maybebadio((unsigned long)port);
	return (volatile __u16*)port;
}

/*
 * General outline: remap really low stuff [eventually] to SuperIO,
 * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO)
 * is mapped through the PCI IO window.  Stuff with high bits (PXSEG)
 * should be way beyond the window, and is used  w/o translation for
 * compatibility.
 */
unsigned char sh7751systemh_inb(unsigned long port)
{
	if (PXSEG(port))
		return *(volatile unsigned char *)port;
	else if (port <= 0x3F1)
		return *(volatile unsigned char *)ETHER_IOMAP(port);
	else
		return (*port2adr(port))&0xff;
}

unsigned char sh7751systemh_inb_p(unsigned long port)
{
	unsigned char v;

        if (PXSEG(port))
                v = *(volatile unsigned char *)port;
	else if (port <= 0x3F1)
		v = *(volatile unsigned char *)ETHER_IOMAP(port);
	else
		v = (*port2adr(port))&0xff;
	ctrl_delay();
	return v;
}

unsigned short sh7751systemh_inw(unsigned long port)
{
        if (PXSEG(port))
                return *(volatile unsigned short *)port;
	else if (port >= 0x2000)
		return *port2adr(port);
	else if (port <= 0x3F1)
		return *(volatile unsigned int *)ETHER_IOMAP(port);
	else
		maybebadio(port);
	return 0;
}

unsigned int sh7751systemh_inl(unsigned long port)
{
        if (PXSEG(port))
                return *(volatile unsigned long *)port;
	else if (port >= 0x2000)
		return *port2adr(port);
	else if (port <= 0x3F1)
		return *(volatile unsigned int *)ETHER_IOMAP(port);
	else
		maybebadio(port);
	return 0;
}

void sh7751systemh_outb(unsigned char value, unsigned long port)
{

        if (PXSEG(port))
                *(volatile unsigned char *)port = value;
	else if (port <= 0x3F1)
		*(volatile unsigned char *)ETHER_IOMAP(port) = value;
	else
		*(port2adr(port)) = value;
}

void sh7751systemh_outb_p(unsigned char value, unsigned long port)
{
        if (PXSEG(port))
                *(volatile unsigned char *)port = value;
	else if (port <= 0x3F1)
		*(volatile unsigned char *)ETHER_IOMAP(port) = value;
	else
		*(port2adr(port)) = value;
	ctrl_delay();
}

void sh7751systemh_outw(unsigned short value, unsigned long port)
{
        if (PXSEG(port))
                *(volatile unsigned short *)port = value;
	else if (port >= 0x2000)
		*port2adr(port) = value;
	else if (port <= 0x3F1)
		*(volatile unsigned short *)ETHER_IOMAP(port) = value;
	else
		maybebadio(port);
}

void sh7751systemh_outl(unsigned int value, unsigned long port)
{
        if (PXSEG(port))
                *(volatile unsigned long *)port = value;
	else
		maybebadio(port);
}

void sh7751systemh_insb(unsigned long port, void *addr, unsigned long count)
{
	unsigned char *p = addr;
	while (count--) *p++ = sh7751systemh_inb(port);
}

void sh7751systemh_insw(unsigned long port, void *addr, unsigned long count)
{
	unsigned short *p = addr;
	while (count--) *p++ = sh7751systemh_inw(port);
}

void sh7751systemh_insl(unsigned long port, void *addr, unsigned long count)
{
	maybebadio(port);
}

void sh7751systemh_outsb(unsigned long port, const void *addr, unsigned long count)
{
	unsigned char *p = (unsigned char*)addr;
	while (count--) sh7751systemh_outb(*p++, port);
}

void sh7751systemh_outsw(unsigned long port, const void *addr, unsigned long count)
{
	unsigned short *p = (unsigned short*)addr;
	while (count--) sh7751systemh_outw(*p++, port);
}

void sh7751systemh_outsl(unsigned long port, const void *addr, unsigned long count)
{
	maybebadio(port);
}