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 * xtalk.h -- platform-independent crosstalk interface, derived from
7 * IRIX <sys/PCI/bridge.h>, revision 1.38.
8 *
9 * Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
10 * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
11 */
12#ifndef _ASM_XTALK_XTALK_H
13#define _ASM_XTALK_XTALK_H
14
15#ifndef __ASSEMBLY__
16/*
17 * User-level device driver visible types
18 */
19typedef char            xwidgetnum_t;	/* xtalk widget number  (0..15) */
20
21#define XWIDGET_NONE		-1
22
23typedef int xwidget_part_num_t;	/* xtalk widget part number */
24
25#define XWIDGET_PART_NUM_NONE	-1
26
27typedef int             xwidget_rev_num_t;	/* xtalk widget revision number */
28
29#define XWIDGET_REV_NUM_NONE	-1
30
31typedef int xwidget_mfg_num_t;	/* xtalk widget manufacturing ID */
32
33#define XWIDGET_MFG_NUM_NONE	-1
34
35typedef struct xtalk_piomap_s *xtalk_piomap_t;
36
37/* It is often convenient to fold the XIO target port
38 * number into the XIO address.
39 */
40#define	XIO_NOWHERE	(0xFFFFFFFFFFFFFFFFull)
41#define	XIO_ADDR_BITS	(0x0000FFFFFFFFFFFFull)
42#define	XIO_PORT_BITS	(0xF000000000000000ull)
43#define	XIO_PORT_SHIFT	(60)
44
45#define	XIO_PACKED(x)	(((x)&XIO_PORT_BITS) != 0)
46#define	XIO_ADDR(x)	((x)&XIO_ADDR_BITS)
47#define	XIO_PORT(x)	((xwidgetnum_t)(((x)&XIO_PORT_BITS) >> XIO_PORT_SHIFT))
48#define	XIO_PACK(p,o)	((((uint64_t)(p))<<XIO_PORT_SHIFT) | ((o)&XIO_ADDR_BITS))
49
50#endif /* !__ASSEMBLY__ */
51
52#endif /* _ASM_XTALK_XTALK_H */
53