tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#include <linux/config.h>
13#if defined (CONFIG_SGI_IP27)
14#include <asm/sn/sn0/hubio.h>
15#endif
16
17
18#define IIO_ITTE_BASE 0x400160 /* base of translation table entries */
19#define IIO_ITTE(bigwin) (IIO_ITTE_BASE + 8*(bigwin))
20
21#define IIO_ITTE_OFFSET_BITS 5 /* size of offset field */
22#define IIO_ITTE_OFFSET_MASK ((1<<IIO_ITTE_OFFSET_BITS)-1)
23#define IIO_ITTE_OFFSET_SHIFT 0
24
25#define IIO_ITTE_WIDGET_BITS 4 /* size of widget field */
26#define IIO_ITTE_WIDGET_MASK ((1<<IIO_ITTE_WIDGET_BITS)-1)
27#define IIO_ITTE_WIDGET_SHIFT 8
28
29#define IIO_ITTE_IOSP 1 /* I/O Space bit */
30#define IIO_ITTE_IOSP_MASK 1
31#define IIO_ITTE_IOSP_SHIFT 12
32#define HUB_PIO_MAP_TO_MEM 0
33#define HUB_PIO_MAP_TO_IO 1
34
35#define IIO_ITTE_INVALID_WIDGET 3 /* an invalid widget */
36
37#define IIO_ITTE_PUT(nasid, bigwin, io_or_mem, widget, addr) \
38 REMOTE_HUB_S((nasid), IIO_ITTE(bigwin), \
39 (((((addr) >> BWIN_SIZE_BITS) & \
40 IIO_ITTE_OFFSET_MASK) << IIO_ITTE_OFFSET_SHIFT) | \
41 (io_or_mem << IIO_ITTE_IOSP_SHIFT) | \
42 (((widget) & IIO_ITTE_WIDGET_MASK) << IIO_ITTE_WIDGET_SHIFT)))
43
44#define IIO_ITTE_DISABLE(nasid, bigwin) \
45 IIO_ITTE_PUT((nasid), HUB_PIO_MAP_TO_MEM, \
46 (bigwin), IIO_ITTE_INVALID_WIDGET, 0)
47
48#define IIO_ITTE_GET(nasid, bigwin) REMOTE_HUB_ADDR((nasid), IIO_ITTE(bigwin))
49
50/*
51 * Macro which takes the widget number, and returns the
52 * IO PRB address of that widget.
53 * value _x is expected to be a widget number in the range
54 * 0, 8 - 0xF
55 */
56#define IIO_IOPRB(_x) (IIO_IOPRB_0 + ( ( (_x) < HUB_WIDGET_ID_MIN ? \
57 (_x) : \
58 (_x) - (HUB_WIDGET_ID_MIN-1)) << 3) )
59
60#endif /* _ASM_SN_IO_H */