blob: 192d80c875b06479ff4670693914b9e591600c5c [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
3 * Adapted for the alpha wildfire architecture Jan 2001.
4 */
5#ifndef _ASM_MMZONE_H_
6#define _ASM_MMZONE_H_
7
8#include <linux/config.h>
9#include <asm/smp.h>
10
11struct bootmem_data_t; /* stupid forward decl. */
12
13/*
14 * Following are macros that are specific to this numa platform.
15 */
16
17extern pg_data_t node_data[];
18
19#define alpha_pa_to_nid(pa) \
20 (alpha_mv.pa_to_nid \
21 ? alpha_mv.pa_to_nid(pa) \
22 : (0))
23#define node_mem_start(nid) \
24 (alpha_mv.node_mem_start \
25 ? alpha_mv.node_mem_start(nid) \
26 : (0UL))
27#define node_mem_size(nid) \
28 (alpha_mv.node_mem_size \
29 ? alpha_mv.node_mem_size(nid) \
30 : ((nid) ? (0UL) : (~0UL)))
31
32#define pa_to_nid(pa) alpha_pa_to_nid(pa)
33#define NODE_DATA(nid) (&node_data[(nid)])
34
35#define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn)
36
37#if 1
38#define PLAT_NODE_DATA_LOCALNR(p, n) \
39 (((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn)
40#else
41static inline unsigned long
42PLAT_NODE_DATA_LOCALNR(unsigned long p, int n)
43{
44 unsigned long temp;
45 temp = p >> PAGE_SHIFT;
46 return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn;
47}
48#endif
49
50#ifdef CONFIG_DISCONTIGMEM
51
52/*
53 * Following are macros that each numa implementation must define.
54 */
55
56/*
57 * Given a kernel address, find the home node of the underlying memory.
58 */
59#define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr))
Linus Torvalds1da177e2005-04-16 15:20:36 -070060#define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn)
61
Linus Torvalds1da177e2005-04-16 15:20:36 -070062/*
63 * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
64 * and returns the kaddr corresponding to first physical page in the
65 * node's mem_map.
66 */
67#define LOCAL_BASE_ADDR(kaddr) \
68 ((unsigned long)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn \
69 << PAGE_SHIFT))
70
71/* XXX: FIXME -- wli */
72#define kern_addr_valid(kaddr) (0)
73
74#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
75
76#define VALID_PAGE(page) (((page) - mem_map) < max_mapnr)
77
78#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> 32))
79#define pte_pfn(pte) (pte_val(pte) >> 32)
80
81#define mk_pte(page, pgprot) \
82({ \
83 pte_t pte; \
84 unsigned long pfn; \
85 \
KAMEZAWA Hiroyukia0140c12006-03-27 01:15:55 -080086 pfn = page_to_pfn(page) << 32; \
Linus Torvalds1da177e2005-04-16 15:20:36 -070087 pte_val(pte) = pfn | pgprot_val(pgprot); \
88 \
89 pte; \
90})
91
92#define pte_page(x) \
93({ \
94 unsigned long kvirt; \
95 struct page * __xx; \
96 \
97 kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT)); \
98 __xx = virt_to_page(kvirt); \
99 \
100 __xx; \
101})
102
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103#define page_to_pa(page) \
KAMEZAWA Hiroyuki1c05dda2006-03-27 01:15:36 -0800104 (page_to_pfn(page) << PAGE_SHIFT)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
106#define pfn_to_nid(pfn) pa_to_nid(((u64)(pfn) << PAGE_SHIFT))
107#define pfn_valid(pfn) \
108 (((pfn) - node_start_pfn(pfn_to_nid(pfn))) < \
109 node_spanned_pages(pfn_to_nid(pfn))) \
110
111#define virt_addr_valid(kaddr) pfn_valid((__pa(kaddr) >> PAGE_SHIFT))
112
113#endif /* CONFIG_DISCONTIGMEM */
114
115#endif /* _ASM_MMZONE_H_ */