/arch/mips/include/asm/sn/sn0/arch.h

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