io.c 4.6 KB
Newer Older
L
Linus Torvalds 已提交
1
/*
2
 * linux/arch/sh/boards/renesas/systemh/io.c
L
Linus Torvalds 已提交
3 4 5 6 7 8 9 10
 *
 * 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>
11 12
#include <linux/pci.h>
#include <asm/systemh7751.h>
L
Linus Torvalds 已提交
13 14 15 16 17 18 19 20 21 22
#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));
23
	maybebadio((unsigned long)port);
L
Linus Torvalds 已提交
24 25 26 27 28 29 30 31 32 33 34 35 36 37
	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;
38 39
	else if (is_pci_ioaddr(port))
		return *(volatile unsigned char *)pci_ioaddr(port);
L
Linus Torvalds 已提交
40 41 42 43 44 45 46 47 48 49 50 51
	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;
52 53
	else if (is_pci_ioaddr(port))
                v = *(volatile unsigned char *)pci_ioaddr(port);
L
Linus Torvalds 已提交
54 55 56 57
	else if (port <= 0x3F1)
		v = *(volatile unsigned char *)ETHER_IOMAP(port);
	else
		v = (*port2adr(port))&0xff;
58
	ctrl_delay();
L
Linus Torvalds 已提交
59 60 61 62 63 64 65
	return v;
}

unsigned short sh7751systemh_inw(unsigned long port)
{
        if (PXSEG(port))
                return *(volatile unsigned short *)port;
66 67
	else if (is_pci_ioaddr(port))
                return *(volatile unsigned short *)pci_ioaddr(port);
L
Linus Torvalds 已提交
68 69 70 71 72
	else if (port >= 0x2000)
		return *port2adr(port);
	else if (port <= 0x3F1)
		return *(volatile unsigned int *)ETHER_IOMAP(port);
	else
73
		maybebadio(port);
L
Linus Torvalds 已提交
74 75 76 77 78 79 80
	return 0;
}

unsigned int sh7751systemh_inl(unsigned long port)
{
        if (PXSEG(port))
                return *(volatile unsigned long *)port;
81 82
	else if (is_pci_ioaddr(port))
                return *(volatile unsigned int *)pci_ioaddr(port);
L
Linus Torvalds 已提交
83 84 85 86 87
	else if (port >= 0x2000)
		return *port2adr(port);
	else if (port <= 0x3F1)
		return *(volatile unsigned int *)ETHER_IOMAP(port);
	else
88
		maybebadio(port);
L
Linus Torvalds 已提交
89 90 91 92 93 94 95 96
	return 0;
}

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

        if (PXSEG(port))
                *(volatile unsigned char *)port = value;
97 98
	else if (is_pci_ioaddr(port))
		*((unsigned char*)pci_ioaddr(port)) = value;
L
Linus Torvalds 已提交
99 100 101 102 103 104 105 106 107 108
	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;
109 110
	else if (is_pci_ioaddr(port))
		*((unsigned char*)pci_ioaddr(port)) = value;
L
Linus Torvalds 已提交
111 112 113 114
	else if (port <= 0x3F1)
		*(volatile unsigned char *)ETHER_IOMAP(port) = value;
	else
		*(port2adr(port)) = value;
115
	ctrl_delay();
L
Linus Torvalds 已提交
116 117 118 119 120 121
}

void sh7751systemh_outw(unsigned short value, unsigned long port)
{
        if (PXSEG(port))
                *(volatile unsigned short *)port = value;
122 123
	else if (is_pci_ioaddr(port))
		*((unsigned short *)pci_ioaddr(port)) = value;
L
Linus Torvalds 已提交
124 125 126 127 128
	else if (port >= 0x2000)
		*port2adr(port) = value;
	else if (port <= 0x3F1)
		*(volatile unsigned short *)ETHER_IOMAP(port) = value;
	else
129
		maybebadio(port);
L
Linus Torvalds 已提交
130 131 132 133 134 135
}

void sh7751systemh_outl(unsigned int value, unsigned long port)
{
        if (PXSEG(port))
                *(volatile unsigned long *)port = value;
136 137
	else if (is_pci_ioaddr(port))
		*((unsigned long*)pci_ioaddr(port)) = value;
L
Linus Torvalds 已提交
138
	else
139
		maybebadio(port);
L
Linus Torvalds 已提交
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
}

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)
{
156
	maybebadio(port);
L
Linus Torvalds 已提交
157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172
}

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)
{
173
	maybebadio(port);
L
Linus Torvalds 已提交
174
}