projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 867e359b CM |
1 | /* |
| 2 | * Copyright 2010 Tilera Corporation. All Rights Reserved. | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public License | |
| 6 | * as published by the Free Software Foundation, version 2. | |
| 7 | * | |
| 8 | * This program is distributed in the hope that it will be useful, but | |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 10 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
| 11 | * NON INFRINGEMENT. See the GNU General Public License for | |
| 12 | * more details. | |
| 13 | */ | |
| 14 | ||
| 15 | #ifndef _ASM_TILE_MMZONE_H | |
| 16 | #define _ASM_TILE_MMZONE_H | |
| 17 | ||
| 18 | extern struct pglist_data node_data[]; | |
| 19 | #define NODE_DATA(nid) (&node_data[nid]) | |
| 20 | ||
| 21 | extern void get_memcfg_numa(void); | |
| 22 | ||
| 23 | #ifdef CONFIG_DISCONTIGMEM | |
| 24 | ||
| 25 | #include <asm/page.h> | |
| 26 | ||
| 27 | /* | |
| 28 | * Generally, memory ranges are always doled out by the hypervisor in | |
| 29 | * fixed-size, power-of-two increments. That would make computing the node | |
| 30 | * very easy. We could just take a couple high bits of the PA, which | |
| 31 | * denote the memory shim, and we'd be done. However, when we're doing | |
| 32 | * memory striping, this may not be true; PAs with different high bit | |
| 33 | * values might be in the same node. Thus, we keep a lookup table to | |
| 34 | * translate the high bits of the PFN to the node number. | |
| 35 | */ | |
| 36 | extern int highbits_to_node[]; | |
| 37 | ||
| 38 | static inline int pfn_to_nid(unsigned long pfn) | |
| 39 | { | |
| 40 | return highbits_to_node[__pfn_to_highbits(pfn)]; | |
| 41 | } | |
| 42 | ||
| 867e359b CM |
43 | #define kern_addr_valid(kaddr) virt_addr_valid((void *)kaddr) |
| 44 | ||
| 6fbeee29 | 45 | static inline int pfn_valid(unsigned long pfn) |
| 867e359b CM |
46 | { |
| 47 | int nid = pfn_to_nid(pfn); | |
| 48 | ||
| 49 | if (nid >= 0) | |
| 50 | return (pfn < node_end_pfn(nid)); | |
| 51 | return 0; | |
| 52 | } | |
| 53 | ||
| 54 | /* Information on the NUMA nodes that we compute early */ | |
| 55 | extern unsigned long node_start_pfn[]; | |
| 56 | extern unsigned long node_end_pfn[]; | |
| 57 | extern unsigned long node_memmap_pfn[]; | |
| 58 | extern unsigned long node_percpu_pfn[]; | |
| 59 | extern unsigned long node_free_pfn[]; | |
| 60 | #ifdef CONFIG_HIGHMEM | |
| 61 | extern unsigned long node_lowmem_end_pfn[]; | |
| 62 | #endif | |
| 63 | #ifdef CONFIG_PCI | |
| 64 | extern unsigned long pci_reserve_start_pfn; | |
| 65 | extern unsigned long pci_reserve_end_pfn; | |
| 66 | #endif | |
| 67 | ||
| 68 | #endif /* CONFIG_DISCONTIGMEM */ | |
| 69 | ||
| 70 | #endif /* _ASM_TILE_MMZONE_H */ |