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/*
* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
*/
#ifndef _ASM_MMZONE_H_
#define _ASM_MMZONE_H_
#include <linux/config.h>
#include <asm/sn/types.h>
#include <asm/sn/addrs.h>
#include <asm/sn/arch.h>
#include <asm/sn/klkernvars.h>
typedef struct plat_pglist_data {
pg_data_t gendata;
kern_vars_t kern_vars;
} plat_pg_data_t;
/*
* Following are macros that are specific to this numa platform.
*/
extern int numa_debug(void);
extern plat_pg_data_t *plat_node_data[];
#define PHYSADDR_TO_NID(pa) NASID_TO_COMPACT_NODEID(NASID_GET(pa))
#define PLAT_NODE_DATA(n) (plat_node_data[n])
#define PLAT_NODE_DATA_SIZE(n) (PLAT_NODE_DATA(n)->gendata.node_spanned_pages)
#define PLAT_NODE_DATA_LOCALNR(p, n) \
(((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn)
#ifdef CONFIG_DISCONTIGMEM
/*
* 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) \
((NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr))) != -1) ? \
(NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr)))) : \
(printk("NUMABUG: %s line %d addr 0x%lx", __FILE__, __LINE__, kaddr), \
numa_debug(), -1))
/*
* Return a pointer to the node data for node n.
*/
#define NODE_DATA(n) (&((PLAT_NODE_DATA(n))->gendata))
/*
* NODE_MEM_MAP gives the kaddr for the mem_map of the node.
*/
#define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map)
/*
* Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
* and returns the mem_map of that node.
*/
#define ADDR_TO_MAPBASE(kaddr) \
NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
/*
* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
* and returns the kaddr corresponding to first physical page in the
* node's mem_map.
*/
#define LOCAL_BASE_ADDR(kaddr) ((unsigned long)(kaddr) & ~(NODE_MAX_MEM_SIZE-1))
#define LOCAL_MAP_NR(kvaddr) \
(((unsigned long)(kvaddr)-LOCAL_BASE_ADDR((kvaddr))) >> PAGE_SHIFT)
#define MIPS64_NR(kaddr) (((unsigned long)(kaddr) > (unsigned long)high_memory)\
? (max_mapnr + 1) : (LOCAL_MAP_NR((kaddr)) + \
(((unsigned long)ADDR_TO_MAPBASE((kaddr)) - PAGE_OFFSET) / \
sizeof(struct page))))
#define kern_addr_valid(addr) ((KVADDR_TO_NID((unsigned long)addr) > \
-1) ? 0 : (test_bit(LOCAL_MAP_NR((addr)), \
NODE_DATA(KVADDR_TO_NID((unsigned long)addr))->valid_addr_bitmap)))
#define pfn_to_page(pfn) (mem_map + (pfn))
#define page_to_pfn(page) \
((((page)-(page)->zone->zone_mem_map) + (page)->zone->zone_start_pfn) \
<< PAGE_SHIFT)
#define virt_to_page(kaddr) pfn_to_page(MIPS64_NR(kaddr))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
#define pte_pfn(x) ((unsigned long)((x).pte >> PAGE_SHIFT))
#define pfn_pte(pfn, prot) __pte(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
#endif /* CONFIG_DISCONTIGMEM */
#endif /* _ASM_MMZONE_H_ */
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