1/*
2 * linux/arch/sh/boards/superh/microdev/io.c
3 *
4 * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com)
5 * Copyright (C) 2003, 2004 SuperH, Inc.
6 * Copyright (C) 2004 Paul Mundt
7 *
8 * SuperH SH4-202 MicroDev board support.
9 *
10 * May be copied or modified under the terms of the GNU General Public
11 * License.  See linux/COPYING for more information.
12 */
13
14#include <linux/init.h>
15#include <linux/pci.h>
16#include <linux/wait.h>
17#include <asm/io.h>
18#include <mach/microdev.h>
19
20	/*
21	 *	we need to have a 'safe' address to re-direct all I/O requests
22	 *	that we do not explicitly wish to handle. This safe address
23	 *	must have the following properies:
24	 *
25	 *		* writes are ignored (no exception)
26	 *		* reads are benign (no side-effects)
27	 *		* accesses of width 1, 2 and 4-bytes are all valid.
28	 *
29	 *	The Processor Version Register (PVR) has these properties.
30	 */
31#define	PVR	0xff000030	/* Processor Version Register */
32
33
34#define	IO_IDE2_BASE		0x170ul	/* I/O base for SMSC FDC37C93xAPM IDE #2 */
35#define	IO_IDE1_BASE		0x1f0ul	/* I/O base for SMSC FDC37C93xAPM IDE #1 */
36#define IO_ISP1161_BASE		0x290ul /* I/O port for Philips ISP1161x USB chip */
37#define IO_SERIAL2_BASE		0x2f8ul /* I/O base for SMSC FDC37C93xAPM Serial #2 */
38#define	IO_LAN91C111_BASE	0x300ul	/* I/O base for SMSC LAN91C111 Ethernet chip */
39#define	IO_IDE2_MISC		0x376ul	/* I/O misc for SMSC FDC37C93xAPM IDE #2 */
40#define IO_SUPERIO_BASE		0x3f0ul /* I/O base for SMSC FDC37C93xAPM SuperIO chip */
41#define	IO_IDE1_MISC		0x3f6ul	/* I/O misc for SMSC FDC37C93xAPM IDE #1 */
42#define IO_SERIAL1_BASE		0x3f8ul /* I/O base for SMSC FDC37C93xAPM Serial #1 */
43
44#define	IO_ISP1161_EXTENT	0x04ul	/* I/O extent for Philips ISP1161x USB chip */
45#define	IO_LAN91C111_EXTENT	0x10ul	/* I/O extent for SMSC LAN91C111 Ethernet chip */
46#define	IO_SUPERIO_EXTENT	0x02ul	/* I/O extent for SMSC FDC37C93xAPM SuperIO chip */
47#define	IO_IDE_EXTENT		0x08ul	/* I/O extent for IDE Task Register set */
48#define IO_SERIAL_EXTENT	0x10ul
49
50#define	IO_LAN91C111_PHYS	0xa7500000ul	/* Physical address of SMSC LAN91C111 Ethernet chip */
51#define	IO_ISP1161_PHYS		0xa7700000ul	/* Physical address of Philips ISP1161x USB chip */
52#define	IO_SUPERIO_PHYS		0xa7800000ul	/* Physical address of SMSC FDC37C93xAPM SuperIO chip */
53
54/*
55 * map I/O ports to memory-mapped addresses
56 */
57void __iomem *microdev_ioport_map(unsigned long offset, unsigned int len)
58{
59	unsigned long result;
60
61	if ((offset >= IO_LAN91C111_BASE) &&
62	    (offset <  IO_LAN91C111_BASE + IO_LAN91C111_EXTENT)) {
63			/*
64			 *	SMSC LAN91C111 Ethernet chip
65			 */
66		result = IO_LAN91C111_PHYS + offset - IO_LAN91C111_BASE;
67	} else if ((offset >= IO_SUPERIO_BASE) &&
68		   (offset <  IO_SUPERIO_BASE + IO_SUPERIO_EXTENT)) {
69			/*
70			 *	SMSC FDC37C93xAPM SuperIO chip
71			 *
72			 *	Configuration Registers
73			 */
74		result = IO_SUPERIO_PHYS + (offset << 1);
75	} else if (((offset >= IO_IDE1_BASE) &&
76		    (offset <  IO_IDE1_BASE + IO_IDE_EXTENT)) ||
77		    (offset == IO_IDE1_MISC)) {
78			/*
79			 *	SMSC FDC37C93xAPM SuperIO chip
80			 *
81			 *	IDE #1
82			 */
83	        result = IO_SUPERIO_PHYS + (offset << 1);
84	} else if (((offset >= IO_IDE2_BASE) &&
85		    (offset <  IO_IDE2_BASE + IO_IDE_EXTENT)) ||
86		    (offset == IO_IDE2_MISC)) {
87			/*
88			 *	SMSC FDC37C93xAPM SuperIO chip
89			 *
90			 *	IDE #2
91			 */
92	        result = IO_SUPERIO_PHYS + (offset << 1);
93	} else if ((offset >= IO_SERIAL1_BASE) &&
94		   (offset <  IO_SERIAL1_BASE + IO_SERIAL_EXTENT)) {
95			/*
96			 *	SMSC FDC37C93xAPM SuperIO chip
97			 *
98			 *	Serial #1
99			 */
100		result = IO_SUPERIO_PHYS + (offset << 1);
101	} else if ((offset >= IO_SERIAL2_BASE) &&
102		   (offset <  IO_SERIAL2_BASE + IO_SERIAL_EXTENT)) {
103			/*
104			 *	SMSC FDC37C93xAPM SuperIO chip
105			 *
106			 *	Serial #2
107			 */
108		result = IO_SUPERIO_PHYS + (offset << 1);
109	} else if ((offset >= IO_ISP1161_BASE) &&
110		   (offset < IO_ISP1161_BASE + IO_ISP1161_EXTENT)) {
111			/*
112			 *	Philips USB ISP1161x chip
113			 */
114		result = IO_ISP1161_PHYS + offset - IO_ISP1161_BASE;
115	} else {
116			/*
117			 *	safe default.
118			 */
119		printk("Warning: unexpected port in %s( offset = 0x%lx )\n",
120		       __func__, offset);
121		result = PVR;
122	}
123
124	return (void __iomem *)result;
125}
126