/*
 * 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 (ralf@gnu.org)
 */
#ifndef _ASM_XTALK_XTALK_H
#define _ASM_XTALK_XTALK_H

#ifndef __ASSEMBLER__
/*
 * 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))

#endif /* !__ASSEMBLER__ */

#endif /* _ASM_XTALK_XTALK_H */