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
7 * Copyright (C) 1992 - 1997, 2000-2001 Silicon Graphics, Inc. All rights reserved.
9 #ifndef _ASM_IA64_SN_SN1_ARCH_H
10 #define _ASM_IA64_SN_SN1_ARCH_H
13 #error "ERROR constants defined only for M-mode"
16 #include <linux/threads.h>
17 #include <asm/types.h>
19 #define CPUS_PER_NODE 4 /* CPUs on a single hub */
20 #define CPUS_PER_SUBNODE 2 /* CPUs on a single hub PI */
23 * This is the maximum number of NASIDS that can be present in a system.
24 * This include ALL nodes in ALL partitions connected via NUMALINK.
25 * (Highest NASID plus one.)
27 #define MAX_NASIDS 128
30 * This is the maximum number of nodes that can be part of a kernel.
31 * Effectively, it's the maximum number of compact node ids (cnodeid_t).
32 * This is not necessarily the same as MAX_NASIDS.
34 #define MAX_COMPACT_NODES 128
37 * MAX_REGIONS refers to the maximum number of hardware partitioned regions.
39 #define MAX_REGIONS 64
40 #define MAX_NONPREMIUM_REGIONS 16
41 #define MAX_PREMIUM_REGIONS MAX_REGIONS
44 * Slot constants for IP35
47 #define MAX_MEM_SLOTS 8 /* max slots per node */
50 #error "N-mode not supported"
53 #define SLOT_SHIFT (30)
54 #define SLOT_MIN_MEM_SIZE (64*1024*1024)
58 * MAX_PARITIONS refers to the maximum number of logically defined
59 * partitions the system can support.
61 #define MAX_PARTITIONS MAX_REGIONS
64 #define NASID_MASK_BYTES ((MAX_NASIDS + 7) / 8)
67 * New stuff in here from Irix sys/pfdat.h.
69 #define SLOT_PFNSHIFT (SLOT_SHIFT - PAGE_SHIFT)
70 #define PFN_NASIDSHFT (NASID_SHFT - PAGE_SHIFT)
71 #define slot_getbasepfn(node,slot) (mkpfn(COMPACT_TO_NASID_NODEID(node), slot<<SLOT_PFNSHIFT))
72 #define mkpfn(nasid, off) (((pfn_t)(nasid) << PFN_NASIDSHFT) | (off))
77 * two PIs per bedrock, two CPUs per PI
79 #define NUM_SUBNODES 2
80 #define SUBNODE_SHFT 1
81 #define SUBNODE_MASK (0x1 << SUBNODE_SHFT)
82 #define LOCALCPU_SHFT 0
83 #define LOCALCPU_MASK (0x1 << LOCALCPU_SHFT)
84 #define SUBNODE(slice) (((slice) & SUBNODE_MASK) >> SUBNODE_SHFT)
85 #define LOCALCPU(slice) (((slice) & LOCALCPU_MASK) >> LOCALCPU_SHFT)
86 #define TO_SLICE(subn, local) (((subn) << SUBNODE_SHFT) | \
87 ((local) << LOCALCPU_SHFT))
89 #endif /* _ASM_IA64_SN_SN1_ARCH_H */