/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* xtalk.h -- platform-independent crosstalk interface, derived from
* IRIX <sys/PCI/bridge.h>, revision 1.38.
*
* Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
* Copyright (C) 1999 Ralf Baechle ([email protected])
*/
#ifndef _ASM_XTALK_XTALK_H
#define _ASM_XTALK_XTALK_H

#ifndef __ASSEMBLY__
/*
* User-level device driver visible types
*/
typedef char xwidgetnum_t; /* xtalk widget number (0..15) */

#define XWIDGET_NONE -1

typedef int xwidget_part_num_t; /* xtalk widget part number */

#define XWIDGET_PART_NUM_NONE -1

typedef int xwidget_rev_num_t; /* xtalk widget revision number */

#define XWIDGET_REV_NUM_NONE -1

typedef int xwidget_mfg_num_t; /* xtalk widget manufacturing ID */

#define XWIDGET_MFG_NUM_NONE -1

typedef struct xtalk_piomap_s *xtalk_piomap_t;

/* It is often convenient to fold the XIO target port
* number into the XIO address.
*/
#define XIO_NOWHERE (0xFFFFFFFFFFFFFFFFull)
#define XIO_ADDR_BITS (0x0000FFFFFFFFFFFFull)
#define XIO_PORT_BITS (0xF000000000000000ull)
#define XIO_PORT_SHIFT (60)

#define XIO_PACKED(x) (((x)&XIO_PORT_BITS) != 0)
#define XIO_ADDR(x) ((x)&XIO_ADDR_BITS)
#define XIO_PORT(x) ((xwidgetnum_t)(((x)&XIO_PORT_BITS) >> XIO_PORT_SHIFT))
#define XIO_PACK(p, o) ((((uint64_t)(p))<<XIO_PORT_SHIFT) | ((o)&XIO_ADDR_BITS))

#ifdef CONFIG_PCI
extern int bridge_probe(nasid_t nasid, int widget, int masterwid);
#else
static inline int bridge_probe(nasid_t nasid, int widget, int masterwid)
{
return 0;
}
#endif

#endif /* !__ASSEMBLY__ */

#endif /* _ASM_XTALK_XTALK_H */