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  */
19 typedef char		xwidgetnum_t;	/* xtalk widget number	(0..15) */
20 
21 #define XWIDGET_NONE		-1
22 
23 typedef int xwidget_part_num_t; /* xtalk widget part number */
24 
25 #define XWIDGET_PART_NUM_NONE	-1
26 
27 typedef int		xwidget_rev_num_t;	/* xtalk widget revision number */
28 
29 #define XWIDGET_REV_NUM_NONE	-1
30 
31 typedef int xwidget_mfg_num_t;	/* xtalk widget manufacturing ID */
32 
33 #define XWIDGET_MFG_NUM_NONE	-1
34 
35 typedef 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