diff options
Diffstat (limited to 'arch/sh/boards/mach-snapgear/io.c')
-rw-r--r-- | arch/sh/boards/mach-snapgear/io.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-snapgear/io.c b/arch/sh/boards/mach-snapgear/io.c new file mode 100644 index 000000000000..0f4824264557 --- /dev/null +++ b/arch/sh/boards/mach-snapgear/io.c | |||
@@ -0,0 +1,137 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2002 David McCullough <davidm@snapgear.com> | ||
3 | * Copyright (C) 2001 Ian da Silva, Jeremy Siegel | ||
4 | * Based largely on io_se.c. | ||
5 | * | ||
6 | * I/O routine for Hitachi 7751 SolutionEngine. | ||
7 | * | ||
8 | * Initial version only to support LAN access; some | ||
9 | * placeholder code from io_se.c left in with the | ||
10 | * expectation of later SuperIO and PCMCIA access. | ||
11 | */ | ||
12 | #include <linux/kernel.h> | ||
13 | #include <linux/types.h> | ||
14 | #include <linux/pci.h> | ||
15 | #include <asm/io.h> | ||
16 | #include <asm/addrspace.h> | ||
17 | |||
18 | #ifdef CONFIG_SH_SECUREEDGE5410 | ||
19 | unsigned short secureedge5410_ioport; | ||
20 | #endif | ||
21 | |||
22 | static inline volatile __u16 *port2adr(unsigned int port) | ||
23 | { | ||
24 | maybebadio((unsigned long)port); | ||
25 | return (volatile __u16*)port; | ||
26 | } | ||
27 | |||
28 | /* | ||
29 | * General outline: remap really low stuff [eventually] to SuperIO, | ||
30 | * stuff in PCI IO space (at or above window at pci.h:PCIBIOS_MIN_IO) | ||
31 | * is mapped through the PCI IO window. Stuff with high bits (PXSEG) | ||
32 | * should be way beyond the window, and is used w/o translation for | ||
33 | * compatibility. | ||
34 | */ | ||
35 | unsigned char snapgear_inb(unsigned long port) | ||
36 | { | ||
37 | if (PXSEG(port)) | ||
38 | return *(volatile unsigned char *)port; | ||
39 | else if (is_pci_ioaddr(port)) | ||
40 | return *(volatile unsigned char *)pci_ioaddr(port); | ||
41 | else | ||
42 | return (*port2adr(port)) & 0xff; | ||
43 | } | ||
44 | |||
45 | unsigned char snapgear_inb_p(unsigned long port) | ||
46 | { | ||
47 | unsigned char v; | ||
48 | |||
49 | if (PXSEG(port)) | ||
50 | v = *(volatile unsigned char *)port; | ||
51 | else if (is_pci_ioaddr(port)) | ||
52 | v = *(volatile unsigned char *)pci_ioaddr(port); | ||
53 | else | ||
54 | v = (*port2adr(port))&0xff; | ||
55 | ctrl_delay(); | ||
56 | return v; | ||
57 | } | ||
58 | |||
59 | unsigned short snapgear_inw(unsigned long port) | ||
60 | { | ||
61 | if (PXSEG(port)) | ||
62 | return *(volatile unsigned short *)port; | ||
63 | else if (is_pci_ioaddr(port)) | ||
64 | return *(volatile unsigned short *)pci_ioaddr(port); | ||
65 | else if (port >= 0x2000) | ||
66 | return *port2adr(port); | ||
67 | else | ||
68 | maybebadio(port); | ||
69 | return 0; | ||
70 | } | ||
71 | |||
72 | unsigned int snapgear_inl(unsigned long port) | ||
73 | { | ||
74 | if (PXSEG(port)) | ||
75 | return *(volatile unsigned long *)port; | ||
76 | else if (is_pci_ioaddr(port)) | ||
77 | return *(volatile unsigned int *)pci_ioaddr(port); | ||
78 | else if (port >= 0x2000) | ||
79 | return *port2adr(port); | ||
80 | else | ||
81 | maybebadio(port); | ||
82 | return 0; | ||
83 | } | ||
84 | |||
85 | void snapgear_outb(unsigned char value, unsigned long port) | ||
86 | { | ||
87 | |||
88 | if (PXSEG(port)) | ||
89 | *(volatile unsigned char *)port = value; | ||
90 | else if (is_pci_ioaddr(port)) | ||
91 | *((unsigned char*)pci_ioaddr(port)) = value; | ||
92 | else | ||
93 | *(port2adr(port)) = value; | ||
94 | } | ||
95 | |||
96 | void snapgear_outb_p(unsigned char value, unsigned long port) | ||
97 | { | ||
98 | if (PXSEG(port)) | ||
99 | *(volatile unsigned char *)port = value; | ||
100 | else if (is_pci_ioaddr(port)) | ||
101 | *((unsigned char*)pci_ioaddr(port)) = value; | ||
102 | else | ||
103 | *(port2adr(port)) = value; | ||
104 | ctrl_delay(); | ||
105 | } | ||
106 | |||
107 | void snapgear_outw(unsigned short value, unsigned long port) | ||
108 | { | ||
109 | if (PXSEG(port)) | ||
110 | *(volatile unsigned short *)port = value; | ||
111 | else if (is_pci_ioaddr(port)) | ||
112 | *((unsigned short *)pci_ioaddr(port)) = value; | ||
113 | else if (port >= 0x2000) | ||
114 | *port2adr(port) = value; | ||
115 | else | ||
116 | maybebadio(port); | ||
117 | } | ||
118 | |||
119 | void snapgear_outl(unsigned int value, unsigned long port) | ||
120 | { | ||
121 | if (PXSEG(port)) | ||
122 | *(volatile unsigned long *)port = value; | ||
123 | else if (is_pci_ioaddr(port)) | ||
124 | *((unsigned long*)pci_ioaddr(port)) = value; | ||
125 | else | ||
126 | maybebadio(port); | ||
127 | } | ||
128 | |||
129 | void snapgear_insl(unsigned long port, void *addr, unsigned long count) | ||
130 | { | ||
131 | maybebadio(port); | ||
132 | } | ||
133 | |||
134 | void snapgear_outsl(unsigned long port, const void *addr, unsigned long count) | ||
135 | { | ||
136 | maybebadio(port); | ||
137 | } | ||