1/* $Id: arch.h,v 1.1.1.1 2008/10/15 03:29:03 james26_jang Exp $ 2 * 3 * This file is subject to the terms and conditions of the GNU General Public 4 * License. See the file "COPYING" in the main directory of this archive 5 * for more details. 6 * 7 * Copyright (C) 1992 - 1997, 2000-2002 Silicon Graphics, Inc. All rights reserved. 8 */ 9#ifndef _ASM_IA64_SN_SN2_ARCH_H 10#define _ASM_IA64_SN_SN2_ARCH_H 11 12#include <asm/types.h> 13 14 15#define CPUS_PER_NODE 4 /* CPUs on a single hub */ 16#define CPUS_PER_SUBNODE 4 /* CPUs on a single hub PI */ 17 18 19/* 20 * This is the maximum number of NASIDS that can be present in a system. 21 * (Highest NASID plus one.) 22 */ 23#define MAX_NASIDS 2048 24 25 26/* 27 * This is the maximum number of nodes that can be part of a kernel. 28 * Effectively, it's the maximum number of compact node ids (cnodeid_t). 29 * This is not necessarily the same as MAX_NASIDS. 30 */ 31#define MAX_COMPACT_NODES 128 32 33/* 34 * MAX_REGIONS refers to the maximum number of hardware partitioned regions. 35 */ 36#define MAX_REGIONS 64 37#define MAX_NONPREMIUM_REGIONS 16 38#define MAX_PREMIUM_REGIONS MAX_REGIONS 39 40 41/* 42 * MAX_PARITIONS refers to the maximum number of logically defined 43 * partitions the system can support. 44 */ 45#define MAX_PARTITIONS MAX_REGIONS 46 47 48#define NASID_MASK_BYTES ((MAX_NASIDS + 7) / 8) 49 50 51/* 52 * 1 FSB per SHUB, with up to 4 cpus per FSB. 53 */ 54#define NUM_SUBNODES 1 55#define SUBNODE_SHFT 0 56#define SUBNODE_MASK (0x0 << SUBNODE_SHFT) 57#define LOCALCPU_SHFT 0 58#define LOCALCPU_MASK (0x3 << LOCALCPU_SHFT) 59#define SUBNODE(slice) (((slice) & SUBNODE_MASK) >> SUBNODE_SHFT) 60#define LOCALCPU(slice) (((slice) & LOCALCPU_MASK) >> LOCALCPU_SHFT) 61#define TO_SLICE(subn, local) (((subn) << SUBNODE_SHFT) | \ 62 ((local) << LOCALCPU_SHFT)) 63 64typedef u64 mmr_t; 65 66#endif /* _ASM_IA64_SN_SN2_ARCH_H */ 67