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aaf9128a | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 | 2 | /* |
f30c2269 | 3 | * linux/arch/sh/boards/superh/microdev/io.c |
1da177e4 LT |
4 | * |
5 | * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com) | |
6 | * Copyright (C) 2003, 2004 SuperH, Inc. | |
7 | * Copyright (C) 2004 Paul Mundt | |
8 | * | |
9 | * SuperH SH4-202 MicroDev board support. | |
1da177e4 LT |
10 | */ |
11 | ||
1da177e4 LT |
12 | #include <linux/init.h> |
13 | #include <linux/pci.h> | |
14 | #include <linux/wait.h> | |
15 | #include <asm/io.h> | |
7639a454 | 16 | #include <mach/microdev.h> |
1da177e4 LT |
17 | |
18 | /* | |
19 | * we need to have a 'safe' address to re-direct all I/O requests | |
20 | * that we do not explicitly wish to handle. This safe address | |
21 | * must have the following properies: | |
22 | * | |
23 | * * writes are ignored (no exception) | |
24 | * * reads are benign (no side-effects) | |
25 | * * accesses of width 1, 2 and 4-bytes are all valid. | |
26 | * | |
27 | * The Processor Version Register (PVR) has these properties. | |
28 | */ | |
29 | #define PVR 0xff000030 /* Processor Version Register */ | |
30 | ||
31 | ||
32 | #define IO_IDE2_BASE 0x170ul /* I/O base for SMSC FDC37C93xAPM IDE #2 */ | |
33 | #define IO_IDE1_BASE 0x1f0ul /* I/O base for SMSC FDC37C93xAPM IDE #1 */ | |
34 | #define IO_ISP1161_BASE 0x290ul /* I/O port for Philips ISP1161x USB chip */ | |
35 | #define IO_SERIAL2_BASE 0x2f8ul /* I/O base for SMSC FDC37C93xAPM Serial #2 */ | |
36 | #define IO_LAN91C111_BASE 0x300ul /* I/O base for SMSC LAN91C111 Ethernet chip */ | |
37 | #define IO_IDE2_MISC 0x376ul /* I/O misc for SMSC FDC37C93xAPM IDE #2 */ | |
38 | #define IO_SUPERIO_BASE 0x3f0ul /* I/O base for SMSC FDC37C93xAPM SuperIO chip */ | |
39 | #define IO_IDE1_MISC 0x3f6ul /* I/O misc for SMSC FDC37C93xAPM IDE #1 */ | |
40 | #define IO_SERIAL1_BASE 0x3f8ul /* I/O base for SMSC FDC37C93xAPM Serial #1 */ | |
41 | ||
42 | #define IO_ISP1161_EXTENT 0x04ul /* I/O extent for Philips ISP1161x USB chip */ | |
43 | #define IO_LAN91C111_EXTENT 0x10ul /* I/O extent for SMSC LAN91C111 Ethernet chip */ | |
44 | #define IO_SUPERIO_EXTENT 0x02ul /* I/O extent for SMSC FDC37C93xAPM SuperIO chip */ | |
45 | #define IO_IDE_EXTENT 0x08ul /* I/O extent for IDE Task Register set */ | |
46 | #define IO_SERIAL_EXTENT 0x10ul | |
47 | ||
48 | #define IO_LAN91C111_PHYS 0xa7500000ul /* Physical address of SMSC LAN91C111 Ethernet chip */ | |
49 | #define IO_ISP1161_PHYS 0xa7700000ul /* Physical address of Philips ISP1161x USB chip */ | |
50 | #define IO_SUPERIO_PHYS 0xa7800000ul /* Physical address of SMSC FDC37C93xAPM SuperIO chip */ | |
51 | ||
74017294 PM |
52 | /* |
53 | * map I/O ports to memory-mapped addresses | |
54 | */ | |
46bc8587 | 55 | void __iomem *microdev_ioport_map(unsigned long offset, unsigned int len) |
74017294 PM |
56 | { |
57 | unsigned long result; | |
58 | ||
59 | if ((offset >= IO_LAN91C111_BASE) && | |
60 | (offset < IO_LAN91C111_BASE + IO_LAN91C111_EXTENT)) { | |
61 | /* | |
62 | * SMSC LAN91C111 Ethernet chip | |
63 | */ | |
64 | result = IO_LAN91C111_PHYS + offset - IO_LAN91C111_BASE; | |
65 | } else if ((offset >= IO_SUPERIO_BASE) && | |
66 | (offset < IO_SUPERIO_BASE + IO_SUPERIO_EXTENT)) { | |
67 | /* | |
68 | * SMSC FDC37C93xAPM SuperIO chip | |
69 | * | |
70 | * Configuration Registers | |
71 | */ | |
72 | result = IO_SUPERIO_PHYS + (offset << 1); | |
74017294 PM |
73 | } else if (((offset >= IO_IDE1_BASE) && |
74 | (offset < IO_IDE1_BASE + IO_IDE_EXTENT)) || | |
75 | (offset == IO_IDE1_MISC)) { | |
76 | /* | |
77 | * SMSC FDC37C93xAPM SuperIO chip | |
78 | * | |
79 | * IDE #1 | |
80 | */ | |
81 | result = IO_SUPERIO_PHYS + (offset << 1); | |
82 | } else if (((offset >= IO_IDE2_BASE) && | |
83 | (offset < IO_IDE2_BASE + IO_IDE_EXTENT)) || | |
84 | (offset == IO_IDE2_MISC)) { | |
85 | /* | |
86 | * SMSC FDC37C93xAPM SuperIO chip | |
87 | * | |
88 | * IDE #2 | |
89 | */ | |
90 | result = IO_SUPERIO_PHYS + (offset << 1); | |
91 | } else if ((offset >= IO_SERIAL1_BASE) && | |
92 | (offset < IO_SERIAL1_BASE + IO_SERIAL_EXTENT)) { | |
93 | /* | |
94 | * SMSC FDC37C93xAPM SuperIO chip | |
95 | * | |
96 | * Serial #1 | |
97 | */ | |
98 | result = IO_SUPERIO_PHYS + (offset << 1); | |
99 | } else if ((offset >= IO_SERIAL2_BASE) && | |
100 | (offset < IO_SERIAL2_BASE + IO_SERIAL_EXTENT)) { | |
101 | /* | |
102 | * SMSC FDC37C93xAPM SuperIO chip | |
103 | * | |
104 | * Serial #2 | |
105 | */ | |
106 | result = IO_SUPERIO_PHYS + (offset << 1); | |
107 | } else if ((offset >= IO_ISP1161_BASE) && | |
108 | (offset < IO_ISP1161_BASE + IO_ISP1161_EXTENT)) { | |
109 | /* | |
110 | * Philips USB ISP1161x chip | |
111 | */ | |
112 | result = IO_ISP1161_PHYS + offset - IO_ISP1161_BASE; | |
113 | } else { | |
114 | /* | |
115 | * safe default. | |
116 | */ | |
117 | printk("Warning: unexpected port in %s( offset = 0x%lx )\n", | |
866e6b9e | 118 | __func__, offset); |
74017294 PM |
119 | result = PVR; |
120 | } | |
121 | ||
46bc8587 | 122 | return (void __iomem *)result; |
1da177e4 | 123 | } |