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- /*
- * 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.
- *
- * This file contains NUMA specific prototypes and definitions.
- *
- * 2002/08/05 Erich Focht <efocht@ess.nec.de>
- *
- */
- #ifndef _ASM_IA64_NUMA_H
- #define _ASM_IA64_NUMA_H
- #ifdef CONFIG_NUMA
- #include <linux/cache.h>
- #include <linux/cpumask.h>
- #include <linux/numa.h>
- #include <linux/smp.h>
- #include <linux/threads.h>
- #include <asm/mmzone.h>
- extern u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned;
- extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned;
- extern pg_data_t *pgdat_list[MAX_NUMNODES];
- /* Stuff below this line could be architecture independent */
- extern int num_node_memblks; /* total number of memory chunks */
- /*
- * List of node memory chunks. Filled when parsing SRAT table to
- * obtain information about memory nodes.
- */
- struct node_memblk_s {
- unsigned long start_paddr;
- unsigned long size;
- int nid; /* which logical node contains this chunk? */
- int bank; /* which mem bank on this node */
- };
- struct node_cpuid_s {
- u16 phys_id; /* id << 8 | eid */
- int nid; /* logical node containing this CPU */
- };
- extern struct node_memblk_s node_memblk[NR_NODE_MEMBLKS];
- extern struct node_cpuid_s node_cpuid[NR_CPUS];
- /*
- * ACPI 2.0 SLIT (System Locality Information Table)
- * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf
- *
- * This is a matrix with "distances" between nodes, they should be
- * proportional to the memory access latency ratios.
- */
- extern u8 numa_slit[MAX_NUMNODES * MAX_NUMNODES];
- #define node_distance(from,to) (numa_slit[(from) * MAX_NUMNODES + (to)])
- extern int paddr_to_nid(unsigned long paddr);
- #define local_nodeid (cpu_to_node_map[smp_processor_id()])
- extern void map_cpu_to_node(int cpu, int nid);
- extern void unmap_cpu_from_node(int cpu, int nid);
- extern void numa_clear_node(int cpu);
- #else /* !CONFIG_NUMA */
- #define map_cpu_to_node(cpu, nid) do{}while(0)
- #define unmap_cpu_from_node(cpu, nid) do{}while(0)
- #define paddr_to_nid(addr) 0
- #define numa_clear_node(cpu) do { } while (0)
- #endif /* CONFIG_NUMA */
- #endif /* _ASM_IA64_NUMA_H */
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