2024-09-09 08:52:07 +00:00
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* SGI specific setup.
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*
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* Copyright (C) 1995 - 1997, 1999 Silcon Graphics, Inc.
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* Copyright (C) 1999 Ralf Baechle (ralf@gnu.org)
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*/
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#ifndef _ASM_SN_ARCH_H
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#define _ASM_SN_ARCH_H
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#include <linux/types.h>
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#include <asm/sn/types.h>
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#ifdef CONFIG_SGI_IP27
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#include <asm/sn/sn0/arch.h>
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#endif
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typedef u64 hubreg_t;
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#define cputonasid(cpu) (sn_cpu_info[(cpu)].p_nasid)
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#define cputoslice(cpu) (sn_cpu_info[(cpu)].p_slice)
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#define makespnum(_nasid, _slice) \
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(((_nasid) << CPUS_PER_NODE_SHFT) | (_slice))
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#define INVALID_NASID (nasid_t)-1
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#define INVALID_CNODEID (cnodeid_t)-1
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#define INVALID_PNODEID (pnodeid_t)-1
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#define INVALID_MODULE (moduleid_t)-1
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2024-09-09 08:57:42 +00:00
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#define INVALID_PARTID (partid_t)-1
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2024-09-09 08:52:07 +00:00
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extern nasid_t get_nasid(void);
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extern cnodeid_t get_cpu_cnode(cpuid_t);
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extern int get_cpu_slice(cpuid_t);
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/*
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2024-09-09 08:57:42 +00:00
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* NO ONE should access these arrays directly. The only reason we refer to
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2024-09-09 08:52:07 +00:00
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* them here is to avoid the procedure call that would be required in the
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* macros below. (Really want private data members here :-)
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*/
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extern cnodeid_t nasid_to_compact_node[MAX_NASIDS];
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extern nasid_t compact_to_nasid_node[MAX_COMPACT_NODES];
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/*
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* These macros are used by various parts of the kernel to convert
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2024-09-09 08:57:42 +00:00
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* between the three different kinds of node numbering. At least some
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2024-09-09 08:52:07 +00:00
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* of them may change to procedure calls in the future, but the macros
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* will continue to work. Don't use the arrays above directly.
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*/
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2024-09-09 08:57:42 +00:00
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#define NASID_TO_REGION(nnode) \
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2024-09-09 08:52:07 +00:00
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((nnode) >> \
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(is_fine_dirmode() ? NASID_TO_FINEREG_SHFT : NASID_TO_COARSEREG_SHFT))
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extern cnodeid_t nasid_to_compact_node[MAX_NASIDS];
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extern nasid_t compact_to_nasid_node[MAX_COMPACT_NODES];
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extern cnodeid_t cpuid_to_compact_node[MAXCPUS];
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#define NASID_TO_COMPACT_NODEID(nnode) (nasid_to_compact_node[nnode])
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#define COMPACT_TO_NASID_NODEID(cnode) (compact_to_nasid_node[cnode])
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#define CPUID_TO_COMPACT_NODEID(cpu) (cpuid_to_compact_node[(cpu)])
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#endif /* _ASM_SN_ARCH_H */
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