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/* $Id: arch.h,v 1.1.1.1 2004-04-15 02:44:07 phoenix Exp $

 *

 * 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.

 *

 * Copyright (C) 1992 - 1997, 2000-2003 Silicon Graphics, Inc. All rights reserved.

 */

#ifndef _ASM_IA64_SN_SN2_ARCH_H

#define _ASM_IA64_SN_SN2_ARCH_H

#include <asm/types.h>

#define CPUS_PER_NODE           4       /* CPUs on a single hub */

#define CPUS_PER_SUBNODE        4       /* CPUs on a single hub PI */

/*

 * This is the maximum number of NASIDS that can be present in a system.

 * (Highest NASID plus one.)

 */

#define MAX_NASIDS              2048

/*

 * This is the maximum number of nodes that can be part of a kernel.

 * Effectively, it's the maximum number of compact node ids (cnodeid_t).

 * This is not necessarily the same as MAX_NASIDS.

 */

#define MAX_COMPACT_NODES       2048

/*

 * MAX_REGIONS refers to the maximum number of hardware partitioned regions.

 */

#define MAX_REGIONS             64

#define MAX_NONPREMIUM_REGIONS  16

#define MAX_PREMIUM_REGIONS     MAX_REGIONS

/*

 * MAX_PARITIONS refers to the maximum number of logically defined

 * partitions the system can support.

 */

#define MAX_PARTITIONS          MAX_REGIONS

#define NASID_MASK_BYTES        ((MAX_NASIDS + 7) / 8)

#define CNASID_MASK_BYTES       (NASID_MASK_BYTES / 2)

/*

 * 1 FSB per SHUB, with up to 4 cpus per FSB.

 */

#define NUM_SUBNODES    1

#define SUBNODE_SHFT    0

#define SUBNODE_MASK    (0x0 << SUBNODE_SHFT)

#define LOCALCPU_SHFT   0

#define LOCALCPU_MASK   (0x3 << LOCALCPU_SHFT)

#define SUBNODE(slice)  (((slice) & SUBNODE_MASK) >> SUBNODE_SHFT)

#define LOCALCPU(slice) (((slice) & LOCALCPU_MASK) >> LOCALCPU_SHFT)

#define TO_SLICE(subn, local)   (((subn) << SUBNODE_SHFT) | \

                                 ((local) << LOCALCPU_SHFT))

#endif /* _ASM_IA64_SN_SN2_ARCH_H */