1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2000, 2003 Ralf Baechle
7 * Copyright (C) 2000 Silicon Graphics, Inc.
8 */
9#ifndef _ASM_SN_IO_H
10#define _ASM_SN_IO_H
11
12#if defined(CONFIG_SGI_IP27)
13#include <asm/sn/sn0/hubio.h>
14#endif
15
16
17#define IIO_ITTE_BASE		0x400160 /* base of translation table entries */
18#define IIO_ITTE(bigwin)	(IIO_ITTE_BASE + 8*(bigwin))
19
20#define IIO_ITTE_OFFSET_BITS	5	/* size of offset field */
21#define IIO_ITTE_OFFSET_MASK	((1<<IIO_ITTE_OFFSET_BITS)-1)
22#define IIO_ITTE_OFFSET_SHIFT	0
23
24#define IIO_ITTE_WIDGET_BITS	4	/* size of widget field */
25#define IIO_ITTE_WIDGET_MASK	((1<<IIO_ITTE_WIDGET_BITS)-1)
26#define IIO_ITTE_WIDGET_SHIFT	8
27
28#define IIO_ITTE_IOSP		1	/* I/O Space bit */
29#define IIO_ITTE_IOSP_MASK	1
30#define IIO_ITTE_IOSP_SHIFT	12
31#define HUB_PIO_MAP_TO_MEM	0
32#define HUB_PIO_MAP_TO_IO	1
33
34#define IIO_ITTE_INVALID_WIDGET 3	/* an invalid widget  */
35
36#define IIO_ITTE_PUT(nasid, bigwin, io_or_mem, widget, addr) \
37	REMOTE_HUB_S((nasid), IIO_ITTE(bigwin), \
38		(((((addr) >> BWIN_SIZE_BITS) & \
39		   IIO_ITTE_OFFSET_MASK) << IIO_ITTE_OFFSET_SHIFT) | \
40		(io_or_mem << IIO_ITTE_IOSP_SHIFT) | \
41		(((widget) & IIO_ITTE_WIDGET_MASK) << IIO_ITTE_WIDGET_SHIFT)))
42
43#define IIO_ITTE_DISABLE(nasid, bigwin) \
44	IIO_ITTE_PUT((nasid), HUB_PIO_MAP_TO_MEM, \
45		     (bigwin), IIO_ITTE_INVALID_WIDGET, 0)
46
47#define IIO_ITTE_GET(nasid, bigwin) REMOTE_HUB_ADDR((nasid), IIO_ITTE(bigwin))
48
49/*
50 * Macro which takes the widget number, and returns the
51 * IO PRB address of that widget.
52 * value _x is expected to be a widget number in the range
53 * 0, 8 - 0xF
54 */
55#define IIO_IOPRB(_x)	(IIO_IOPRB_0 + ( ( (_x) < HUB_WIDGET_ID_MIN ? \
56			(_x) : \
57			(_x) - (HUB_WIDGET_ID_MIN-1)) << 3) )
58
59#endif /* _ASM_SN_IO_H */
60