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/*
* Written by Kanoj Sarcar (kanoj@sgi.com) Jan 2000
* Copyright, 2000, Silicon Graphics, sprasad@engr.sgi.com
*/
#ifndef _LINUX_ASM_SN_MMZONE_H
#define _LINUX_ASM_SN_MMZONE_H
#include <linux/config.h>
#include <asm/sn/mmzone_sn1.h>
#include <asm/sn/sn_cpuid.h>
/*
* Memory is conceptually divided into chunks. A chunk is either
* completely present, or else the kernel assumes it is completely
* absent. Each node consists of a number of contiguous chunks.
*/
#define CHUNKMASK (~(CHUNKSZ - 1))
#define CHUNKNUM(vaddr) (__pa(vaddr) >> CHUNKSHIFT)
#define PCHUNKNUM(paddr) ((paddr) >> CHUNKSHIFT)
#define MAXCHUNKS (MAXNODES * MAX_CHUNKS_PER_NODE)
extern int chunktonid[];
#define CHUNKTONID(cnum) (chunktonid[cnum])
typedef struct plat_pglist_data {
pg_data_t gendata; /* try to keep this first. */
unsigned long virtstart;
unsigned long size;
} plat_pg_data_t;
extern plat_pg_data_t plat_node_data[];
extern int numa_debug(void);
/*
* The foll two will move into linux/mmzone.h RSN.
*/
#define NODE_START(n) plat_node_data[(n)].virtstart
#define NODE_SIZE(n) plat_node_data[(n)].size
#define KVADDR_TO_NID(kaddr) \
((CHUNKTONID(CHUNKNUM((kaddr))) != -1) ? (CHUNKTONID(CHUNKNUM((kaddr)))) : \
(printk("DISCONTIGBUG: %s line %d addr 0x%lx", __FILE__, __LINE__, \
(unsigned long)(kaddr)), numa_debug()))
#if 0
#define KVADDR_TO_NID(kaddr) CHUNKTONID(CHUNKNUM((kaddr)))
#endif
/* These 2 macros should never be used if KVADDR_TO_NID(kaddr) is -1 */
/*
* 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) NODE_START(KVADDR_TO_NID(kaddr))
#ifdef CONFIG_DISCONTIGMEM
/*
* Return a pointer to the node data for node n.
* Assume that n is the compact node id.
*/
#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)
/* This macro should never be used if KVADDR_TO_NID(kaddr) is -1 */
#define LOCAL_MAP_NR(kvaddr) \
(((unsigned long)(kvaddr)-LOCAL_BASE_ADDR((kvaddr))) >> PAGE_SHIFT)
#define MAP_NR_SN1(kaddr) (LOCAL_MAP_NR((kaddr)) + \
(((unsigned long)ADDR_TO_MAPBASE((kaddr)) - PAGE_OFFSET) / \
sizeof(mem_map_t)))
#if 0
#define MAP_NR_VALID(kaddr) (LOCAL_MAP_NR((kaddr)) + \
(((unsigned long)ADDR_TO_MAPBASE((kaddr)) - PAGE_OFFSET) / \
sizeof(mem_map_t)))
#define MAP_NR_SN1(kaddr) ((KVADDR_TO_NID(kaddr) == -1) ? (max_mapnr + 1) :\
MAP_NR_VALID(kaddr))
#endif
/* FIXME */
#define sn1_pte_pagenr(x) MAP_NR_SN1(PAGE_OFFSET + (unsigned long)((pte_val(x)&_PFN_MASK) & PAGE_MASK))
#define pte_page(pte) (mem_map + sn1_pte_pagenr(pte))
/* FIXME */
#define kern_addr_valid(addr) ((KVADDR_TO_NID((unsigned long)addr) >= \
numnodes) ? 0 : (test_bit(LOCAL_MAP_NR((addr)), \
NODE_DATA(KVADDR_TO_NID((unsigned long)addr))->valid_addr_bitmap)))
#define virt_to_page(kaddr) (mem_map + MAP_NR_SN1(kaddr))
#else /* CONFIG_DISCONTIGMEM */
#define MAP_NR_SN1(addr) (((unsigned long) (addr) - PAGE_OFFSET) >> PAGE_SHIFT)
#endif /* CONFIG_DISCONTIGMEM */
#define numa_node_id() cpuid_to_cnodeid(smp_processor_id())
#endif /* !_LINUX_ASM_SN_MMZONE_H */
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