/* * 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 <linux/config.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) #else static inline unsigned long PLAT_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) #define local_mapnr(kvaddr) \ ((__pa(kvaddr) >> PAGE_SHIFT) - node_start_pfn(kvaddr_to_nid(kvaddr))) /* * 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 = ((unsigned long)((page)-page_zone(page)->zone_mem_map)) << 32; \ pfn += page_zone(page)->zone_start_pfn << 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 pfn_to_page(pfn) \ ({ \ unsigned long kaddr = (unsigned long)__va((pfn) << PAGE_SHIFT); \ (NODE_DATA(kvaddr_to_nid(kaddr))->node_mem_map + local_mapnr(kaddr)); \ }) #define page_to_pfn(page) \ ((page) - page_zone(page)->zone_mem_map + \ (page_zone(page)->zone_start_pfn)) #define page_to_pa(page) \ ((( (page) - page_zone(page)->zone_mem_map ) \ + page_zone(page)->zone_start_pfn) << 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_ */