| /* |
| * Copyright 2010 Tilera Corporation. All Rights Reserved. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation, version 2. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| * NON INFRINGEMENT. See the GNU General Public License for |
| * more details. |
| */ |
| |
| #ifndef _ASM_TILE_MMZONE_H |
| #define _ASM_TILE_MMZONE_H |
| |
| extern struct pglist_data node_data[]; |
| #define NODE_DATA(nid) (&node_data[nid]) |
| |
| extern void get_memcfg_numa(void); |
| |
| #ifdef CONFIG_DISCONTIGMEM |
| |
| #include <asm/page.h> |
| |
| /* |
| * Generally, memory ranges are always doled out by the hypervisor in |
| * fixed-size, power-of-two increments. That would make computing the node |
| * very easy. We could just take a couple high bits of the PA, which |
| * denote the memory shim, and we'd be done. However, when we're doing |
| * memory striping, this may not be true; PAs with different high bit |
| * values might be in the same node. Thus, we keep a lookup table to |
| * translate the high bits of the PFN to the node number. |
| */ |
| extern int highbits_to_node[]; |
| |
| static inline int pfn_to_nid(unsigned long pfn) |
| { |
| return highbits_to_node[__pfn_to_highbits(pfn)]; |
| } |
| |
| #define kern_addr_valid(kaddr) virt_addr_valid((void *)kaddr) |
| |
| static inline int pfn_valid(unsigned long pfn) |
| { |
| int nid = pfn_to_nid(pfn); |
| |
| if (nid >= 0) |
| return (pfn < node_end_pfn(nid)); |
| return 0; |
| } |
| |
| /* Information on the NUMA nodes that we compute early */ |
| extern unsigned long node_start_pfn[]; |
| extern unsigned long node_end_pfn[]; |
| extern unsigned long node_memmap_pfn[]; |
| extern unsigned long node_percpu_pfn[]; |
| extern unsigned long node_free_pfn[]; |
| #ifdef CONFIG_HIGHMEM |
| extern unsigned long node_lowmem_end_pfn[]; |
| #endif |
| #ifdef CONFIG_PCI |
| extern unsigned long pci_reserve_start_pfn; |
| extern unsigned long pci_reserve_end_pfn; |
| #endif |
| |
| #endif /* CONFIG_DISCONTIGMEM */ |
| |
| #endif /* _ASM_TILE_MMZONE_H */ |
