arch.h
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- /*
- * 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.
- *
- * SGI IP27 specific setup.
- *
- * Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
- * Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
- */
- #ifndef _ASM_SN_SN0_ARCH_H
- #define _ASM_SN_SN0_ARCH_H
- #include <linux/config.h>
- #ifndef SABLE
- #ifndef SN0XXL /* 128 cpu SMP max */
- /*
- * 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).
- */
- #define MAX_COMPACT_NODES 64
- /*
- * MAXCPUS refers to the maximum number of CPUs in a single kernel.
- * This is not necessarily the same as MAXNODES * CPUS_PER_NODE
- */
- #define MAXCPUS 128
- #else /* SN0XXL system */
- #define MAX_COMPACT_NODES 128
- #define MAXCPUS 256
- #endif /* SN0XXL */
- /*
- * This is the maximum number of NASIDS that can be present in a system.
- * (Highest NASID plus one.)
- */
- #define MAX_NASIDS 256
- /*
- * 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
- #else
- #define MAX_COMPACT_NODES 4
- #define MAX_NASIDS 4
- #define MAXCPUS 8
- #endif
- #define NASID_MASK_BYTES ((MAX_NASIDS + 7) / 8)
- /*
- * Slot constants for SN0
- */
- #ifdef CONFIG_SGI_SN0_N_MODE
- #define MAX_MEM_SLOTS 16 /* max slots per node */
- #else /* !CONFIG_SGI_SN0_N_MODE, assume M_MODE */
- #define MAX_MEM_SLOTS 32 /* max slots per node */
- #endif /* defined(N_MODE) */
- #if SABLE_RTL
- #define SLOT_SHIFT (28)
- #define SLOT_MIN_MEM_SIZE (16*1024*1024)
- #else
- #define SLOT_SHIFT (27)
- #define SLOT_MIN_MEM_SIZE (32*1024*1024)
- #endif
- #endif /* _ASM_SN_SN0_ARCH_H */