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 #ifdef CONFIG_PCI 51 extern int bridge_probe(nasid_t nasid, int widget, int masterwid); 52 #else 53 static inline int bridge_probe(nasid_t nasid, int widget, int masterwid) 54 { 55 return 0; 56 } 57 #endif 58 59 #endif /* !__ASSEMBLY__ */ 60 61 #endif /* _ASM_XTALK_XTALK_H */ 62