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#include <linux/config.h>
15
16#ifndef SABLE
17
18#ifndef SN0XXL      /* 128 cpu SMP max */
19/*
20 * This is the maximum number of nodes that can be part of a kernel.
21 * Effectively, it's the maximum number of compact node ids (cnodeid_t).
22 */
23#define MAX_COMPACT_NODES       64
24
25/*
26 * MAXCPUS refers to the maximum number of CPUs in a single kernel.
27 * This is not necessarily the same as MAXNODES * CPUS_PER_NODE
28 */
29#define MAXCPUS                 128
30
31#else /* SN0XXL system */
32
33#define MAX_COMPACT_NODES       128
34#define MAXCPUS                 256
35
36#endif /* SN0XXL */
37
38/*
39 * This is the maximum number of NASIDS that can be present in a system.
40 * (Highest NASID plus one.)
41 */
42#define MAX_NASIDS		256
43
44/*
45 * MAX_REGIONS refers to the maximum number of hardware partitioned regions.
46 */
47#define	MAX_REGIONS		64
48#define MAX_NONPREMIUM_REGIONS  16
49#define MAX_PREMIUM_REGIONS     MAX_REGIONS
50
51/*
52 * MAX_PARITIONS refers to the maximum number of logically defined
53 * partitions the system can support.
54 */
55#define MAX_PARTITIONS		MAX_REGIONS
56
57
58#else
59
60#define MAX_COMPACT_NODES	4
61#define MAX_NASIDS		4
62#define MAXCPUS			8
63
64#endif
65
66#define NASID_MASK_BYTES	((MAX_NASIDS + 7) / 8)
67
68/*
69 * Slot constants for SN0
70 */
71#ifdef CONFIG_SGI_SN0_N_MODE
72#define MAX_MEM_SLOTS   16                      /* max slots per node */
73#else /* !CONFIG_SGI_SN0_N_MODE, assume M_MODE */
74#define MAX_MEM_SLOTS   32                      /* max slots per node */
75#endif /* defined(N_MODE) */
76
77#if SABLE_RTL
78#define SLOT_SHIFT      	(28)
79#define SLOT_MIN_MEM_SIZE	(16*1024*1024)
80#else
81#define SLOT_SHIFT      	(27)
82#define SLOT_MIN_MEM_SIZE	(32*1024*1024)
83#endif
84
85#endif /* _ASM_SN_SN0_ARCH_H */
86