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 <mach-se/mach/se7751.h>
16 #include <asm/addrspace.h>
17
port2adr(unsigned int port)18 static 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 */
sh7751se_inb(unsigned long port)33 unsigned 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
sh7751se_inb_p(unsigned long port)43 unsigned 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
sh7751se_inw(unsigned long port)57 unsigned 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
sh7751se_inl(unsigned long port)70 unsigned 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
sh7751se_outb(unsigned char value,unsigned long port)83 void 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
sh7751se_outb_p(unsigned char value,unsigned long port)94 void 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
sh7751se_outw(unsigned short value,unsigned long port)105 void 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
sh7751se_outl(unsigned int value,unsigned long port)117 void 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
sh7751se_insl(unsigned long port,void * addr,unsigned long count)127 void sh7751se_insl(unsigned long port, void *addr, unsigned long count)
128 {
129 maybebadio(port);
130 }
131
sh7751se_outsl(unsigned long port,const void * addr,unsigned long count)132 void sh7751se_outsl(unsigned long port, const void *addr, unsigned long count)
133 {
134 maybebadio(port);
135 }
136