| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |