/* * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99 * Adapted for the alpha wildfire architecture Jan 2001. */#ifndef _ASM_MMZONE_H_#define _ASM_MMZONE_H_ #include <asm/smp.h> struct bootmem_data_t; /* stupid forward decl. */ /* * Following are macros that are specific to this numa platform. */ extern pg_data_t node_data[]; #define alpha_pa_to_nid(pa)		\        (alpha_mv.pa_to_nid 		\	 ? alpha_mv.pa_to_nid(pa)	\	 : (0))#define node_mem_start(nid)		\        (alpha_mv.node_mem_start 	\	 ? alpha_mv.node_mem_start(nid) \	 : (0UL))#define node_mem_size(nid)		\        (alpha_mv.node_mem_size 	\	 ? alpha_mv.node_mem_size(nid) 	\	 : ((nid) ? (0UL) : (~0UL))) #define pa_to_nid(pa)		alpha_pa_to_nid(pa)#define NODE_DATA(nid)		(&node_data[(nid)]) #define node_localnr(pfn, nid)	((pfn) - NODE_DATA(nid)->node_start_pfn) #if 1#define PLAT_NODE_DATA_LOCALNR(p, n)	\	(((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn)#elsestatic inline unsigned longPLAT_NODE_DATA_LOCALNR(unsigned long p, int n){	unsigned long temp;	temp = p >> PAGE_SHIFT;	return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn;}#endif #ifdef CONFIG_DISCONTIGMEM /* * Following are macros that each numa implementation must define. */ /* * Given a kernel address, find the home node of the underlying memory. */#define kvaddr_to_nid(kaddr)	pa_to_nid(__pa(kaddr))#define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn) /* * 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)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn  \			 << PAGE_SHIFT)) /* XXX: FIXME -- wli */#define kern_addr_valid(kaddr)	(0) #define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define VALID_PAGE(page)	(((page) - mem_map) < max_mapnr) #define pmd_page(pmd)		(pfn_to_page(pmd_val(pmd) >> 32))#define pte_pfn(pte)		(pte_val(pte) >> 32) #define mk_pte(page, pgprot)						     \({								 	     \	pte_t pte;                                                           \	unsigned long pfn;                                                   \									     \	pfn = page_to_pfn(page) << 32; \	pte_val(pte) = pfn | pgprot_val(pgprot);			     \									     \	pte;								     \}) #define pte_page(x)							\({									\       	unsigned long kvirt;						\	struct page * __xx;						\									\	kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT));	\	__xx = virt_to_page(kvirt);					\									\	__xx;                                                           \}) #define page_to_pa(page)						\	(page_to_pfn(page) << PAGE_SHIFT) #define pfn_to_nid(pfn)		pa_to_nid(((u64)(pfn) << PAGE_SHIFT))#define pfn_valid(pfn)							\	(((pfn) - node_start_pfn(pfn_to_nid(pfn))) <			\	 node_spanned_pages(pfn_to_nid(pfn)))					\ #define virt_addr_valid(kaddr)	pfn_valid((__pa(kaddr) >> PAGE_SHIFT)) #endif /* CONFIG_DISCONTIGMEM */ #endif /* _ASM_MMZONE_H_ */