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 extern void __init early_numa_add_cpu(int cpuid, s16 node); 26 extern void numa_add_cpu(unsigned int cpu); 27 extern void numa_remove_cpu(unsigned int cpu); 28 numa_clear_node(int cpu)29static inline void numa_clear_node(int cpu) 30 { 31 } 32 set_cpuid_to_node(int cpuid,s16 node)33static inline void set_cpuid_to_node(int cpuid, s16 node) 34 { 35 __cpuid_to_node[cpuid] = node; 36 } 37 38 extern int early_cpu_to_node(int cpu); 39 40 #else 41 early_numa_add_cpu(int cpuid,s16 node)42static inline void early_numa_add_cpu(int cpuid, s16 node) { } numa_add_cpu(unsigned int cpu)43static inline void numa_add_cpu(unsigned int cpu) { } numa_remove_cpu(unsigned int cpu)44static inline void numa_remove_cpu(unsigned int cpu) { } set_cpuid_to_node(int cpuid,s16 node)45static inline void set_cpuid_to_node(int cpuid, s16 node) { } 46 early_cpu_to_node(int cpu)47static inline int early_cpu_to_node(int cpu) 48 { 49 return 0; 50 } 51 52 #endif /* CONFIG_NUMA */ 53 54 #endif /* _ASM_LOONGARCH_NUMA_H */ 55