1 #ifndef _ASM_X8664_NUMA_H
2 #define _ASM_X8664_NUMA_H 1
3
4 #include <xen/cpumask.h>
5
6 #define NODES_SHIFT 6
7
8 typedef u8 nodeid_t;
9
10 extern int srat_rev;
11
12 extern nodeid_t cpu_to_node[NR_CPUS];
13 extern cpumask_t node_to_cpumask[];
14
15 #define cpu_to_node(cpu) (cpu_to_node[cpu])
16 #define parent_node(node) (node)
17 #define node_to_first_cpu(node) (__ffs(node_to_cpumask[node]))
18 #define node_to_cpumask(node) (node_to_cpumask[node])
19
20 struct node {
21 u64 start,end;
22 };
23
24 extern int compute_hash_shift(struct node *nodes, int numnodes,
25 nodeid_t *nodeids);
26 extern nodeid_t pxm_to_node(unsigned int pxm);
27
28 #define ZONE_ALIGN (1UL << (MAX_ORDER+PAGE_SHIFT))
29 #define VIRTUAL_BUG_ON(x)
30
31 extern void numa_add_cpu(int cpu);
32 extern void numa_init_array(void);
33 extern bool numa_off;
34
35
36 extern int srat_disabled(void);
37 extern void numa_set_node(int cpu, nodeid_t node);
38 extern nodeid_t setup_node(unsigned int pxm);
39 extern void srat_detect_node(int cpu);
40
41 extern void setup_node_bootmem(nodeid_t nodeid, u64 start, u64 end);
42 extern nodeid_t apicid_to_node[];
43 extern void init_cpu_to_node(void);
44
clear_node_cpumask(int cpu)45 static inline void clear_node_cpumask(int cpu)
46 {
47 cpumask_clear_cpu(cpu, &node_to_cpumask[cpu_to_node(cpu)]);
48 }
49
50 /* Simple perfect hash to map pdx to node numbers */
51 extern int memnode_shift;
52 extern unsigned long memnodemapsize;
53 extern u8 *memnodemap;
54
55 struct node_data {
56 unsigned long node_start_pfn;
57 unsigned long node_spanned_pages;
58 };
59
60 extern struct node_data node_data[];
61
phys_to_nid(paddr_t addr)62 static inline __attribute__((pure)) nodeid_t phys_to_nid(paddr_t addr)
63 {
64 nodeid_t nid;
65 VIRTUAL_BUG_ON((paddr_to_pdx(addr) >> memnode_shift) >= memnodemapsize);
66 nid = memnodemap[paddr_to_pdx(addr) >> memnode_shift];
67 VIRTUAL_BUG_ON(nid >= MAX_NUMNODES || !node_data[nid]);
68 return nid;
69 }
70
71 #define NODE_DATA(nid) (&(node_data[nid]))
72
73 #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
74 #define node_spanned_pages(nid) (NODE_DATA(nid)->node_spanned_pages)
75 #define node_end_pfn(nid) (NODE_DATA(nid)->node_start_pfn + \
76 NODE_DATA(nid)->node_spanned_pages)
77
78 extern int valid_numa_range(u64 start, u64 end, nodeid_t node);
79
80 void srat_parse_regions(u64 addr);
81 extern u8 __node_distance(nodeid_t a, nodeid_t b);
82 unsigned int arch_get_dma_bitsize(void);
83
84 #endif
85