1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99 4 * Adapted for the alpha wildfire architecture Jan 2001. 5 */ 6 #ifndef _ASM_MMZONE_H_ 7 #define _ASM_MMZONE_H_ 8 9 #include <asm/smp.h> 10 11 /* 12 * Following are macros that are specific to this numa platform. 13 */ 14 15 extern pg_data_t node_data[]; 16 17 #define alpha_pa_to_nid(pa) \ 18 (alpha_mv.pa_to_nid \ 19 ? alpha_mv.pa_to_nid(pa) \ 20 : (0)) 21 #define node_mem_start(nid) \ 22 (alpha_mv.node_mem_start \ 23 ? alpha_mv.node_mem_start(nid) \ 24 : (0UL)) 25 #define node_mem_size(nid) \ 26 (alpha_mv.node_mem_size \ 27 ? alpha_mv.node_mem_size(nid) \ 28 : ((nid) ? (0UL) : (~0UL))) 29 30 #define pa_to_nid(pa) alpha_pa_to_nid(pa) 31 #define NODE_DATA(nid) (&node_data[(nid)]) 32 33 #define node_localnr(pfn, nid) ((pfn) - NODE_DATA(nid)->node_start_pfn) 34 35 #if 1 36 #define PLAT_NODE_DATA_LOCALNR(p, n) \ 37 (((p) >> PAGE_SHIFT) - PLAT_NODE_DATA(n)->gendata.node_start_pfn) 38 #else 39 static inline unsigned long PLAT_NODE_DATA_LOCALNR(unsigned long p,int n)40PLAT_NODE_DATA_LOCALNR(unsigned long p, int n) 41 { 42 unsigned long temp; 43 temp = p >> PAGE_SHIFT; 44 return temp - PLAT_NODE_DATA(n)->gendata.node_start_pfn; 45 } 46 #endif 47 48 #ifdef CONFIG_DISCONTIGMEM 49 50 /* 51 * Following are macros that each numa implementation must define. 52 */ 53 54 /* 55 * Given a kernel address, find the home node of the underlying memory. 56 */ 57 #define kvaddr_to_nid(kaddr) pa_to_nid(__pa(kaddr)) 58 59 /* 60 * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory 61 * and returns the kaddr corresponding to first physical page in the 62 * node's mem_map. 63 */ 64 #define LOCAL_BASE_ADDR(kaddr) \ 65 ((unsigned long)__va(NODE_DATA(kvaddr_to_nid(kaddr))->node_start_pfn \ 66 << PAGE_SHIFT)) 67 68 /* XXX: FIXME -- nyc */ 69 #define kern_addr_valid(kaddr) (0) 70 71 #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) 72 73 #define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> 32)) 74 #define pte_pfn(pte) (pte_val(pte) >> 32) 75 76 #define mk_pte(page, pgprot) \ 77 ({ \ 78 pte_t pte; \ 79 unsigned long pfn; \ 80 \ 81 pfn = page_to_pfn(page) << 32; \ 82 pte_val(pte) = pfn | pgprot_val(pgprot); \ 83 \ 84 pte; \ 85 }) 86 87 #define pte_page(x) \ 88 ({ \ 89 unsigned long kvirt; \ 90 struct page * __xx; \ 91 \ 92 kvirt = (unsigned long)__va(pte_val(x) >> (32-PAGE_SHIFT)); \ 93 __xx = virt_to_page(kvirt); \ 94 \ 95 __xx; \ 96 }) 97 98 #define page_to_pa(page) \ 99 (page_to_pfn(page) << PAGE_SHIFT) 100 101 #define pfn_to_nid(pfn) pa_to_nid(((u64)(pfn) << PAGE_SHIFT)) 102 #define pfn_valid(pfn) \ 103 (((pfn) - node_start_pfn(pfn_to_nid(pfn))) < \ 104 node_spanned_pages(pfn_to_nid(pfn))) \ 105 106 #define virt_addr_valid(kaddr) pfn_valid((__pa(kaddr) >> PAGE_SHIFT)) 107 108 #endif /* CONFIG_DISCONTIGMEM */ 109 110 #endif /* _ASM_MMZONE_H_ */ 111