blob: 544b30060eca192c8712b4065c2651da0a2ff465 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
/*
* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
*
* PowerPC64 port:
* Copyright (C) 2002 Anton Blanchard, IBM Corp.
*/
#ifndef _ASM_MMZONE_H_
#define _ASM_MMZONE_H_
#include <linux/config.h>
typedef struct plat_pglist_data {
pg_data_t gendata;
} plat_pg_data_t;
/*
* Following are macros that are specific to this numa platform.
*/
extern plat_pg_data_t plat_node_data[];
#define MAX_NUMNODES 4
/* XXX grab this from the device tree - Anton */
#define PHYSADDR_TO_NID(pa) ((pa) >> 36)
#define PLAT_NODE_DATA(n) (&plat_node_data[(n)])
#define PLAT_NODE_DATA_STARTNR(n) \
(PLAT_NODE_DATA(n)->gendata.node_start_mapnr)
#define PLAT_NODE_DATA_SIZE(n) (PLAT_NODE_DATA(n)->gendata.node_size)
#define PLAT_NODE_DATA_LOCALNR(p, n) \
(((p) - PLAT_NODE_DATA(n)->gendata.node_start_paddr) >> PAGE_SHIFT)
#ifdef CONFIG_DISCONTIGMEM
/*
* Following are macros that each numa implmentation must define.
*/
/*
* Given a kernel address, find the home node of the underlying memory.
*/
#define KVADDR_TO_NID(kaddr) PHYSADDR_TO_NID(__pa(kaddr))
/*
* Return a pointer to the node data for node n.
*/
#define NODE_DATA(n) (&((PLAT_NODE_DATA(n))->gendata))
/*
* NODE_MEM_MAP gives the kaddr for the mem_map of the node.
*/
#define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map)
/*
* Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
* and returns the mem_map of that node.
*/
#define ADDR_TO_MAPBASE(kaddr) \
NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
/*
* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
* and returns the kaddr corresponding to first physical page in the
* node's mem_map.
*/
#define LOCAL_BASE_ADDR(kaddr) \
((unsigned long)__va(NODE_DATA(KVADDR_TO_NID(kaddr))->node_start_paddr))
#define LOCAL_MAP_NR(kvaddr) \
(((unsigned long)(kvaddr)-LOCAL_BASE_ADDR(kvaddr)) >> PAGE_SHIFT)
#if 0
/* XXX fix - Anton */
#define kern_addr_valid(kaddr) test_bit(LOCAL_MAP_NR(kaddr), \
NODE_DATA(KVADDR_TO_NID(kaddr))->valid_addr_bitmap)
#endif
#define discontigmem_pfn_to_page(pfn) \
({ \
unsigned long kaddr = (unsigned long)__va(pfn << PAGE_SHIFT); \
(ADDR_TO_MAPBASE(kaddr) + LOCAL_MAP_NR(kaddr)); \
})
#ifdef CONFIG_NUMA
/* XXX grab this from the device tree - Anton */
#define cputonode(cpu) ((cpu) >> 3)
#define numa_node_id() cputonode(smp_processor_id())
#endif /* CONFIG_NUMA */
#endif /* CONFIG_DISCONTIGMEM */
#endif /* _ASM_MMZONE_H_ */
|
