1*4882a593Smuzhiyun /* 2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public 3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive 4*4882a593Smuzhiyun * for more details. 5*4882a593Smuzhiyun * 6*4882a593Smuzhiyun * SGI IP27 specific setup. 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc. 9*4882a593Smuzhiyun * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org) 10*4882a593Smuzhiyun */ 11*4882a593Smuzhiyun #ifndef _ASM_SN_SN0_ARCH_H 12*4882a593Smuzhiyun #define _ASM_SN_SN0_ARCH_H 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun /* 16*4882a593Smuzhiyun * MAXCPUS refers to the maximum number of CPUs in a single kernel. 17*4882a593Smuzhiyun * This is not necessarily the same as MAXNODES * CPUS_PER_NODE 18*4882a593Smuzhiyun */ 19*4882a593Smuzhiyun #define MAXCPUS (MAX_NUMNODES * CPUS_PER_NODE) 20*4882a593Smuzhiyun 21*4882a593Smuzhiyun /* 22*4882a593Smuzhiyun * This is the maximum number of NASIDS that can be present in a system. 23*4882a593Smuzhiyun * (Highest NASID plus one.) 24*4882a593Smuzhiyun */ 25*4882a593Smuzhiyun #define MAX_NASIDS 256 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun /* 28*4882a593Smuzhiyun * MAX_REGIONS refers to the maximum number of hardware partitioned regions. 29*4882a593Smuzhiyun */ 30*4882a593Smuzhiyun #define MAX_REGIONS 64 31*4882a593Smuzhiyun #define MAX_NONPREMIUM_REGIONS 16 32*4882a593Smuzhiyun #define MAX_PREMIUM_REGIONS MAX_REGIONS 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun /* 35*4882a593Smuzhiyun * MAX_PARITIONS refers to the maximum number of logically defined 36*4882a593Smuzhiyun * partitions the system can support. 37*4882a593Smuzhiyun */ 38*4882a593Smuzhiyun #define MAX_PARTITIONS MAX_REGIONS 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun #define NASID_MASK_BYTES ((MAX_NASIDS + 7) / 8) 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun /* 43*4882a593Smuzhiyun * Slot constants for SN0 44*4882a593Smuzhiyun */ 45*4882a593Smuzhiyun #ifdef CONFIG_SGI_SN_N_MODE 46*4882a593Smuzhiyun #define MAX_MEM_SLOTS 16 /* max slots per node */ 47*4882a593Smuzhiyun #else /* !CONFIG_SGI_SN_N_MODE, assume CONFIG_SGI_SN_M_MODE */ 48*4882a593Smuzhiyun #define MAX_MEM_SLOTS 32 /* max slots per node */ 49*4882a593Smuzhiyun #endif /* CONFIG_SGI_SN_M_MODE */ 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun #define SLOT_SHIFT (27) 52*4882a593Smuzhiyun #define SLOT_MIN_MEM_SIZE (32*1024*1024) 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun #define CPUS_PER_NODE 2 /* CPUs on a single hub */ 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun #endif /* _ASM_SN_SN0_ARCH_H */ 57