1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Author: Jianmin Lv <lvjianmin@loongson.cn> 4 * Huacai Chen <chenhuacai@loongson.cn> 5 * 6 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited 7 */ 8 9 #ifndef _ASM_LOONGARCH_NUMA_H 10 #define _ASM_LOONGARCH_NUMA_H 11 12 #include <linux/nodemask.h> 13 14 #define NODE_ADDRSPACE_SHIFT 44 15 16 #define pa_to_nid(addr) (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT) 17 #define nid_to_addrbase(nid) (_ULCAST_(nid) << NODE_ADDRSPACE_SHIFT) 18 19 #ifdef CONFIG_NUMA 20 21 extern int numa_off; 22 extern s16 __cpuid_to_node[CONFIG_NR_CPUS]; 23 extern nodemask_t numa_nodes_parsed __initdata; 24 25 struct numa_memblk { 26 u64 start; 27 u64 end; 28 int nid; 29 }; 30 31 #define NR_NODE_MEMBLKS (MAX_NUMNODES*2) 32 struct numa_meminfo { 33 int nr_blks; 34 struct numa_memblk blk[NR_NODE_MEMBLKS]; 35 }; 36 37 extern int __init numa_add_memblk(int nodeid, u64 start, u64 end); 38 39 extern void __init early_numa_add_cpu(int cpuid, s16 node); 40 extern void numa_add_cpu(unsigned int cpu); 41 extern void numa_remove_cpu(unsigned int cpu); 42 43 static inline void numa_clear_node(int cpu) 44 { 45 } 46 47 static inline void set_cpuid_to_node(int cpuid, s16 node) 48 { 49 __cpuid_to_node[cpuid] = node; 50 } 51 52 extern int early_cpu_to_node(int cpu); 53 54 #else 55 56 static inline void early_numa_add_cpu(int cpuid, s16 node) { } 57 static inline void numa_add_cpu(unsigned int cpu) { } 58 static inline void numa_remove_cpu(unsigned int cpu) { } 59 static inline void set_cpuid_to_node(int cpuid, s16 node) { } 60 61 static inline int early_cpu_to_node(int cpu) 62 { 63 return 0; 64 } 65 66 #endif /* CONFIG_NUMA */ 67 68 #endif /* _ASM_LOONGARCH_NUMA_H */ 69