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1275 |
phoenix |
/*
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* Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
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*/
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#ifndef _ASM_MMZONE_H_
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#define _ASM_MMZONE_H_
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#include <linux/config.h>
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#include <asm/sn/types.h>
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#include <asm/sn/addrs.h>
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#include <asm/sn/arch.h>
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#include <asm/sn/klkernvars.h>
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typedef struct plat_pglist_data {
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pg_data_t gendata;
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kern_vars_t kern_vars;
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} plat_pg_data_t;
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/*
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* Following are macros that are specific to this numa platform.
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*/
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extern int numa_debug(void);
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extern plat_pg_data_t *plat_node_data[];
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#define PHYSADDR_TO_NID(pa) NASID_TO_COMPACT_NODEID(NASID_GET(pa))
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#define PLAT_NODE_DATA(n) (plat_node_data[n])
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#define PLAT_NODE_DATA_STARTNR(n) (PLAT_NODE_DATA(n)->gendata.node_start_mapnr)
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#define PLAT_NODE_DATA_SIZE(n) (PLAT_NODE_DATA(n)->gendata.node_size)
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#define PLAT_NODE_DATA_LOCALNR(p, n) \
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(((p) - PLAT_NODE_DATA(n)->gendata.node_start_paddr) >> PAGE_SHIFT)
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#define numa_node_id() cputocnode(current->processor)
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#ifdef CONFIG_DISCONTIGMEM
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/*
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* Following are macros that each numa implmentation must define.
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*/
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/*
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* Given a kernel address, find the home node of the underlying memory.
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*/
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#define KVADDR_TO_NID(kaddr) \
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((NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr))) != -1) ? \
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(NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr)))) : \
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(printk("NUMABUG: %s line %d addr 0x%lx", __FILE__, __LINE__, kaddr), \
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numa_debug(), -1))
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/*
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* Return a pointer to the node data for node n.
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*/
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#define NODE_DATA(n) (&((PLAT_NODE_DATA(n))->gendata))
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/*
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* NODE_MEM_MAP gives the kaddr for the mem_map of the node.
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*/
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#define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map)
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/*
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* Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
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* and returns the mem_map of that node.
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*/
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#define ADDR_TO_MAPBASE(kaddr) \
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NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
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/*
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* Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
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* and returns the kaddr corresponding to first physical page in the
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* node's mem_map.
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*/
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#define LOCAL_BASE_ADDR(kaddr) ((unsigned long)(kaddr) & ~(NODE_MAX_MEM_SIZE-1))
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#define LOCAL_MAP_NR(kvaddr) \
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(((unsigned long)(kvaddr)-LOCAL_BASE_ADDR((kvaddr))) >> PAGE_SHIFT)
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#define MIPS64_NR(kaddr) (((unsigned long)(kaddr) > (unsigned long)high_memory)\
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? (max_mapnr + 1) : (LOCAL_MAP_NR((kaddr)) + \
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(((unsigned long)ADDR_TO_MAPBASE((kaddr)) - PAGE_OFFSET) / \
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sizeof(mem_map_t))))
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#define kern_addr_valid(addr) ((KVADDR_TO_NID((unsigned long)addr) > \
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-1) ? 0 : (test_bit(LOCAL_MAP_NR((addr)), \
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NODE_DATA(KVADDR_TO_NID((unsigned long)addr))->valid_addr_bitmap)))
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#define virt_to_page(kaddr) (mem_map + MIPS64_NR(kaddr))
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#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
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#endif /* CONFIG_DISCONTIGMEM */
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#endif /* _ASM_MMZONE_H_ */
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