/*
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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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* Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
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*/
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#ifndef _ASM_IA64_SN_NODEPDA_H
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#define _ASM_IA64_SN_NODEPDA_H
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#include <asm/irq.h>
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#include <asm/sn/arch.h>
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#include <asm/sn/intr.h>
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#include <asm/sn/bte.h>
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/*
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* NUMA Node-Specific Data structures are defined in this file.
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* In particular, this is the location of the node PDA.
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* A pointer to the right node PDA is saved in each CPU PDA.
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*/
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/*
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* Node-specific data structure.
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*
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* One of these structures is allocated on each node of a NUMA system.
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*
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* This structure provides a convenient way of keeping together
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* all per-node data structures.
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*/
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struct phys_cpuid {
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short nasid;
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char subnode;
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char slice;
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};
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struct nodepda_s {
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void *pdinfo; /* Platform-dependent per-node info */
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/*
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* The BTEs on this node are shared by the local cpus
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*/
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struct bteinfo_s bte_if[MAX_BTES_PER_NODE]; /* Virtual Interface */
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struct timer_list bte_recovery_timer;
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spinlock_t bte_recovery_lock;
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/*
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* Array of pointers to the nodepdas for each node.
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*/
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struct nodepda_s *pernode_pdaindr[MAX_COMPACT_NODES];
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/*
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* Array of physical cpu identifiers. Indexed by cpuid.
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*/
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struct phys_cpuid phys_cpuid[NR_CPUS];
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spinlock_t ptc_lock ____cacheline_aligned_in_smp;
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};
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typedef struct nodepda_s nodepda_t;
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/*
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* Access Functions for node PDA.
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* Since there is one nodepda for each node, we need a convenient mechanism
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* to access these nodepdas without cluttering code with #ifdefs.
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* The next set of definitions provides this.
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* Routines are expected to use
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*
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* sn_nodepda - to access node PDA for the node on which code is running
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* NODEPDA(cnodeid) - to access node PDA for cnodeid
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*/
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DECLARE_PER_CPU(struct nodepda_s *, __sn_nodepda);
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#define sn_nodepda __this_cpu_read(__sn_nodepda)
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#define NODEPDA(cnodeid) (sn_nodepda->pernode_pdaindr[cnodeid])
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/*
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* Check if given a compact node id the corresponding node has all the
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* cpus disabled.
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*/
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#define is_headless_node(cnodeid) (nr_cpus_node(cnodeid) == 0)
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#endif /* _ASM_IA64_SN_NODEPDA_H */
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