1/*
2 * Copyright (C) 2001  Ian da Silva, Jeremy Siegel
3 * Based largely on io_se.c.
4 *
5 * I/O routine for Hitachi 7751 SolutionEngine.
6 *
7 * Initial version only to support LAN access; some
8 * placeholder code from io_se.c left in with the
9 * expectation of later SuperIO and PCMCIA access.
10 */
11#include <linux/kernel.h>
12#include <linux/types.h>
13#include <linux/pci.h>
14#include <asm/io.h>
15#include <asm/se7751.h>
16#include <asm/addrspace.h>
17
18static inline volatile u16 *port2adr(unsigned int port)
19{
20	if (port >= 0x2000)
21		return (volatile __u16 *) (PA_MRSHPC + (port - 0x2000));
22	maybebadio((unsigned long)port);
23	return (volatile __u16*)port;
24}
25
26/*
27 * General outline: remap really low stuff [eventually] to SuperIO,
28 * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO)
29 * is mapped through the PCI IO window.  Stuff with high bits (PXSEG)
30 * should be way beyond the window, and is used  w/o translation for
31 * compatibility.
32 */
33unsigned char sh7751se_inb(unsigned long port)
34{
35	if (PXSEG(port))
36		return *(volatile unsigned char *)port;
37	else if (is_pci_ioaddr(port))
38		return *(volatile unsigned char *)pci_ioaddr(port);
39	else
40		return (*port2adr(port)) & 0xff;
41}
42
43unsigned char sh7751se_inb_p(unsigned long port)
44{
45	unsigned char v;
46
47        if (PXSEG(port))
48                v = *(volatile unsigned char *)port;
49	else if (is_pci_ioaddr(port))
50                v = *(volatile unsigned char *)pci_ioaddr(port);
51	else
52		v = (*port2adr(port)) & 0xff;
53	ctrl_delay();
54	return v;
55}
56
57unsigned short sh7751se_inw(unsigned long port)
58{
59        if (PXSEG(port))
60                return *(volatile unsigned short *)port;
61	else if (is_pci_ioaddr(port))
62                return *(volatile unsigned short *)pci_ioaddr(port);
63	else if (port >= 0x2000)
64		return *port2adr(port);
65	else
66		maybebadio(port);
67	return 0;
68}
69
70unsigned int sh7751se_inl(unsigned long port)
71{
72        if (PXSEG(port))
73                return *(volatile unsigned long *)port;
74	else if (is_pci_ioaddr(port))
75                return *(volatile unsigned int *)pci_ioaddr(port);
76	else if (port >= 0x2000)
77		return *port2adr(port);
78	else
79		maybebadio(port);
80	return 0;
81}
82
83void sh7751se_outb(unsigned char value, unsigned long port)
84{
85
86        if (PXSEG(port))
87                *(volatile unsigned char *)port = value;
88	else if (is_pci_ioaddr(port))
89		*((unsigned char*)pci_ioaddr(port)) = value;
90	else
91		*(port2adr(port)) = value;
92}
93
94void sh7751se_outb_p(unsigned char value, unsigned long port)
95{
96        if (PXSEG(port))
97                *(volatile unsigned char *)port = value;
98	else if (is_pci_ioaddr(port))
99		*((unsigned char*)pci_ioaddr(port)) = value;
100	else
101		*(port2adr(port)) = value;
102	ctrl_delay();
103}
104
105void sh7751se_outw(unsigned short value, unsigned long port)
106{
107        if (PXSEG(port))
108                *(volatile unsigned short *)port = value;
109	else if (is_pci_ioaddr(port))
110		*((unsigned short *)pci_ioaddr(port)) = value;
111	else if (port >= 0x2000)
112		*port2adr(port) = value;
113	else
114		maybebadio(port);
115}
116
117void sh7751se_outl(unsigned int value, unsigned long port)
118{
119        if (PXSEG(port))
120                *(volatile unsigned long *)port = value;
121	else if (is_pci_ioaddr(port))
122		*((unsigned long*)pci_ioaddr(port)) = value;
123	else
124		maybebadio(port);
125}
126
127void sh7751se_insl(unsigned long port, void *addr, unsigned long count)
128{
129	maybebadio(port);
130}
131
132void sh7751se_outsl(unsigned long port, const void *addr, unsigned long count)
133{
134	maybebadio(port);
135}
136