asm/xtalk/xtalk.h

0001 /*
0002  * This file is subject to the terms and conditions of the GNU General Public
0003  * License.  See the file "COPYING" in the main directory of this archive
0004  * for more details.
0005  *
0006  * xtalk.h -- platform-independent crosstalk interface, derived from
0007  * IRIX <sys/PCI/bridge.h>, revision 1.38.
0008  *
0009  * Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
0010  * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
0011  */
0012 #ifndef _ASM_XTALK_XTALK_H
0013 #define _ASM_XTALK_XTALK_H
0014
0015 #ifndef __ASSEMBLY__
0016 /*
0017  * User-level device driver visible types
0018  */
0019 typedef char        xwidgetnum_t;   /* xtalk widget number  (0..15) */
0020
0021 #define XWIDGET_NONE        -1
0022
0023 typedef int xwidget_part_num_t; /* xtalk widget part number */
0024
0025 #define XWIDGET_PART_NUM_NONE   -1
0026
0027 typedef int     xwidget_rev_num_t;  /* xtalk widget revision number */
0028
0029 #define XWIDGET_REV_NUM_NONE    -1
0030
0031 typedef int xwidget_mfg_num_t;  /* xtalk widget manufacturing ID */
0032
0033 #define XWIDGET_MFG_NUM_NONE    -1
0034
0035 typedef struct xtalk_piomap_s *xtalk_piomap_t;
0036
0037 /* It is often convenient to fold the XIO target port
0038  * number into the XIO address.
0039  */
0040 #define XIO_NOWHERE (0xFFFFFFFFFFFFFFFFull)
0041 #define XIO_ADDR_BITS   (0x0000FFFFFFFFFFFFull)
0042 #define XIO_PORT_BITS   (0xF000000000000000ull)
0043 #define XIO_PORT_SHIFT  (60)
0044
0045 #define XIO_PACKED(x)   (((x)&XIO_PORT_BITS) != 0)
0046 #define XIO_ADDR(x) ((x)&XIO_ADDR_BITS)
0047 #define XIO_PORT(x) ((xwidgetnum_t)(((x)&XIO_PORT_BITS) >> XIO_PORT_SHIFT))
0048 #define XIO_PACK(p, o)  ((((uint64_t)(p))<<XIO_PORT_SHIFT) | ((o)&XIO_ADDR_BITS))
0049
0050 #endif /* !__ASSEMBLY__ */
0051
0052 #endif /* _ASM_XTALK_XTALK_H */