1 files changed, 82 insertions, 0 deletions

diff --git a/arch/ia64/include/asm/sn/nodepda.h b/arch/ia64/include/asm/sn/nodepda.h
new file mode 100644
index 000000000000..ee118b901de4
--- /dev/null
+++ b/arch/ia64/include/asm/sn/nodepda.h
@@ -0,0 +1,82 @@
+/*
+ * 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              (__get_cpu_var(__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 */