62 lines
1.7 KiB
C
62 lines
1.7 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* xtalk.h -- platform-independent crosstalk interface, derived from
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* IRIX <sys/PCI/bridge.h>, revision 1.38.
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*
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* Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
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* Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
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*/
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#ifndef _ASM_XTALK_XTALK_H
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#define _ASM_XTALK_XTALK_H
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#ifndef __ASSEMBLY__
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/*
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* User-level device driver visible types
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*/
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typedef char xwidgetnum_t; /* xtalk widget number (0..15) */
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#define XWIDGET_NONE -1
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typedef int xwidget_part_num_t; /* xtalk widget part number */
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#define XWIDGET_PART_NUM_NONE -1
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typedef int xwidget_rev_num_t; /* xtalk widget revision number */
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#define XWIDGET_REV_NUM_NONE -1
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typedef int xwidget_mfg_num_t; /* xtalk widget manufacturing ID */
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#define XWIDGET_MFG_NUM_NONE -1
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typedef struct xtalk_piomap_s *xtalk_piomap_t;
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/* It is often convenient to fold the XIO target port
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* number into the XIO address.
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*/
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#define XIO_NOWHERE (0xFFFFFFFFFFFFFFFFull)
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#define XIO_ADDR_BITS (0x0000FFFFFFFFFFFFull)
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#define XIO_PORT_BITS (0xF000000000000000ull)
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#define XIO_PORT_SHIFT (60)
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#define XIO_PACKED(x) (((x)&XIO_PORT_BITS) != 0)
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#define XIO_ADDR(x) ((x)&XIO_ADDR_BITS)
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#define XIO_PORT(x) ((xwidgetnum_t)(((x)&XIO_PORT_BITS) >> XIO_PORT_SHIFT))
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#define XIO_PACK(p, o) ((((uint64_t)(p))<<XIO_PORT_SHIFT) | ((o)&XIO_ADDR_BITS))
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#ifdef CONFIG_PCI
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extern int bridge_probe(nasid_t nasid, int widget, int masterwid);
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#else
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static inline int bridge_probe(nasid_t nasid, int widget, int masterwid)
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{
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return 0;
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}
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#endif
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#endif /* !__ASSEMBLY__ */
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#endif /* _ASM_XTALK_XTALK_H */
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