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