Commit | Line | Data |
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1da177e4 LT |
1 | /* |
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 | ||
1da177e4 LT |
8 | #include <asm/smp.h> |
9 | ||
10 | struct bootmem_data_t; /* stupid forward decl. */ | |
11 | ||
12 | /* | |
13 | * Following are macros that are specific to this numa platform. | |
14 | */ | |
15 | ||
16 | extern pg_data_t node_data[]; | |
17 | ||
18 | #define alpha_pa_to_nid(pa) \ | |
19 | (alpha_mv.pa_to_nid \ | |
20 | ? alpha_mv.pa_to_nid(pa) \ | |
21 | : (0)) | |
22 | #define node_mem_start(nid) \ | |
23 | (alpha_mv.node_mem_start \ | |
24 | ? alpha_mv.node_mem_start(nid) \ | |
25 | : (0UL)) | |
26 | #define node_mem_size(nid) \ | |
27 | (alpha_mv.node_mem_size \ | |
28 | ? alpha_mv.node_mem_size(nid) \ | |
29 | : ((nid) ? (0UL) : (~0UL))) | |
30 | ||
31 | #define pa_to_nid(pa) alpha_pa_to_nid(pa) | |
32 | #define NODE_DATA(nid) (&node_data[(nid)]) | |
33 | ||
34 | #define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn) | |
35 | ||
36 | #if 1 | |
37 | #define PLAT_NODE_DATA_LOCALNR(p, n) \ | |
38 | (((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn) | |
39 | #else | |
40 | static inline unsigned long | |
41 | PLAT_NODE_DATA_LOCALNR(unsigned long p, int n) | |
42 | { | |
43 | unsigned long temp; | |
44 | temp = p >> PAGE_SHIFT; | |
45 | return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn; | |
46 | } | |
47 | #endif | |
48 | ||
49 | #ifdef CONFIG_DISCONTIGMEM | |
50 | ||
51 | /* | |
52 | * Following are macros that each numa implementation must define. | |
53 | */ | |
54 | ||
55 | /* | |
56 | * Given a kernel address, find the home node of the underlying memory. | |
57 | */ | |
58 | #define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr)) | |
1da177e4 LT |
59 | #define node_start_pfn(nid) (NODE_DATA(nid)->node_start_pfn) |
60 | ||
1da177e4 LT |
61 | /* |
62 | * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory | |
63 | * and returns the kaddr corresponding to first physical page in the | |
64 | * node's mem_map. | |
65 | */ | |
66 | #define LOCAL_BASE_ADDR(kaddr) \ | |
67 | ((unsigned long)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn \ | |
68 | << PAGE_SHIFT)) | |
69 | ||
70 | /* XXX: FIXME -- wli */ | |
71 | #define kern_addr_valid(kaddr) (0) | |
72 | ||
73 | #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) | |
74 | ||
75 | #define VALID_PAGE(page) (((page) - mem_map) < max_mapnr) | |
76 | ||
77 | #define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> 32)) | |
46a82b2d | 78 | #define pgd_page(pgd) (pfn_to_page(pgd_val(pgd) >> 32)) |
1da177e4 LT |
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 | \ | |
a0140c1d | 86 | pfn = page_to_pfn(page) << 32; \ |
1da177e4 LT |
87 | 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 | ||
1da177e4 | 103 | #define page_to_pa(page) \ |
1c05dda2 | 104 | (page_to_pfn(page) << PAGE_SHIFT) |
1da177e4 LT |
105 | |
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_ */ |