1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/*
|
|
* linux/include/asm-sh/mmzone.h
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#ifndef __ASM_SH_MMZONE_H
|
|
#define __ASM_SH_MMZONE_H
|
|
|
|
#include <linux/config.h>
|
|
|
|
#ifdef CONFIG_DISCONTIGMEM
|
|
|
|
/* Currently, just for HP690 */
|
|
#define PHYSADDR_TO_NID(phys) ((((phys) - __MEMORY_START) >= 0x01000000)?1:0)
|
|
|
|
extern pg_data_t discontig_page_data[MAX_NUMNODES];
|
|
extern bootmem_data_t discontig_node_bdata[MAX_NUMNODES];
|
|
|
|
/*
|
|
* 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(nid) (&discontig_page_data[nid])
|
|
|
|
/*
|
|
* NODE_MEM_MAP gives the kaddr for the mem_map of the node.
|
|
*/
|
|
#define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map)
|
|
|
|
#define phys_to_page(phys) \
|
|
({ unsigned int node = PHYSADDR_TO_NID(phys); \
|
|
NODE_MEM_MAP(node) \
|
|
+ (((phys) - NODE_DATA(node)->node_start_paddr) >> PAGE_SHIFT); })
|
|
|
|
static inline int is_valid_page(struct page *page)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < MAX_NUMNODES; i++) {
|
|
if (page >= NODE_MEM_MAP(i) &&
|
|
page < NODE_MEM_MAP(i) + NODE_DATA(i)->node_size)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#define VALID_PAGE(page) is_valid_page(page)
|
|
#define page_to_phys(page) PHYSADDR(page_address(page))
|
|
|
|
#endif /* CONFIG_DISCONTIGMEM */
|
|
#endif
|