17f30491cSTony Luck /* 27f30491cSTony Luck * This file is subject to the terms and conditions of the GNU General Public 37f30491cSTony Luck * License. See the file "COPYING" in the main directory of this archive 47f30491cSTony Luck * for more details. 57f30491cSTony Luck * 67f30491cSTony Luck * This file contains NUMA specific prototypes and definitions. 77f30491cSTony Luck * 87f30491cSTony Luck * 2002/08/05 Erich Focht <efocht@ess.nec.de> 97f30491cSTony Luck * 107f30491cSTony Luck */ 117f30491cSTony Luck #ifndef _ASM_IA64_NUMA_H 127f30491cSTony Luck #define _ASM_IA64_NUMA_H 137f30491cSTony Luck 147f30491cSTony Luck 157f30491cSTony Luck #ifdef CONFIG_NUMA 167f30491cSTony Luck 177f30491cSTony Luck #include <linux/cache.h> 187f30491cSTony Luck #include <linux/cpumask.h> 197f30491cSTony Luck #include <linux/numa.h> 207f30491cSTony Luck #include <linux/smp.h> 217f30491cSTony Luck #include <linux/threads.h> 227f30491cSTony Luck 237f30491cSTony Luck #include <asm/mmzone.h> 247f30491cSTony Luck 257f30491cSTony Luck extern u16 cpu_to_node_map[NR_CPUS] __cacheline_aligned; 267f30491cSTony Luck extern cpumask_t node_to_cpu_mask[MAX_NUMNODES] __cacheline_aligned; 277f30491cSTony Luck extern pg_data_t *pgdat_list[MAX_NUMNODES]; 287f30491cSTony Luck 297f30491cSTony Luck /* Stuff below this line could be architecture independent */ 307f30491cSTony Luck 317f30491cSTony Luck extern int num_node_memblks; /* total number of memory chunks */ 327f30491cSTony Luck 337f30491cSTony Luck /* 347f30491cSTony Luck * List of node memory chunks. Filled when parsing SRAT table to 357f30491cSTony Luck * obtain information about memory nodes. 367f30491cSTony Luck */ 377f30491cSTony Luck 387f30491cSTony Luck struct node_memblk_s { 397f30491cSTony Luck unsigned long start_paddr; 407f30491cSTony Luck unsigned long size; 417f30491cSTony Luck int nid; /* which logical node contains this chunk? */ 427f30491cSTony Luck int bank; /* which mem bank on this node */ 437f30491cSTony Luck }; 447f30491cSTony Luck 457f30491cSTony Luck struct node_cpuid_s { 467f30491cSTony Luck u16 phys_id; /* id << 8 | eid */ 477f30491cSTony Luck int nid; /* logical node containing this CPU */ 487f30491cSTony Luck }; 497f30491cSTony Luck 507f30491cSTony Luck extern struct node_memblk_s node_memblk[NR_NODE_MEMBLKS]; 517f30491cSTony Luck extern struct node_cpuid_s node_cpuid[NR_CPUS]; 527f30491cSTony Luck 537f30491cSTony Luck /* 547f30491cSTony Luck * ACPI 2.0 SLIT (System Locality Information Table) 557f30491cSTony Luck * http://devresource.hp.com/devresource/Docs/TechPapers/IA64/slit.pdf 567f30491cSTony Luck * 577f30491cSTony Luck * This is a matrix with "distances" between nodes, they should be 587f30491cSTony Luck * proportional to the memory access latency ratios. 597f30491cSTony Luck */ 607f30491cSTony Luck 617f30491cSTony Luck extern u8 numa_slit[MAX_NUMNODES * MAX_NUMNODES]; 62*ef78e5ecSMatias Bjørling #define slit_distance(from,to) (numa_slit[(from) * MAX_NUMNODES + (to)]) 63*ef78e5ecSMatias Bjørling extern int __node_distance(int from, int to); 64*ef78e5ecSMatias Bjørling #define node_distance(from,to) __node_distance(from, to) 657f30491cSTony Luck 667f30491cSTony Luck extern int paddr_to_nid(unsigned long paddr); 677f30491cSTony Luck 687f30491cSTony Luck #define local_nodeid (cpu_to_node_map[smp_processor_id()]) 697f30491cSTony Luck 70aec03f89SBoris Ostrovsky #define numa_off 0 71aec03f89SBoris Ostrovsky 727f30491cSTony Luck extern void map_cpu_to_node(int cpu, int nid); 737f30491cSTony Luck extern void unmap_cpu_from_node(int cpu, int nid); 74eee46b3dSYijing Wang extern void numa_clear_node(int cpu); 757f30491cSTony Luck 767f30491cSTony Luck #else /* !CONFIG_NUMA */ 777f30491cSTony Luck #define map_cpu_to_node(cpu, nid) do{}while(0) 787f30491cSTony Luck #define unmap_cpu_from_node(cpu, nid) do{}while(0) 797f30491cSTony Luck #define paddr_to_nid(addr) 0 80eee46b3dSYijing Wang #define numa_clear_node(cpu) do { } while (0) 817f30491cSTony Luck #endif /* CONFIG_NUMA */ 827f30491cSTony Luck 837f30491cSTony Luck #endif /* _ASM_IA64_NUMA_H */ 84