162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Author: Jianmin Lv <lvjianmin@loongson.cn> 462306a36Sopenharmony_ci * Huacai Chen <chenhuacai@loongson.cn> 562306a36Sopenharmony_ci * 662306a36Sopenharmony_ci * Copyright (C) 2020-2022 Loongson Technology Corporation Limited 762306a36Sopenharmony_ci */ 862306a36Sopenharmony_ci 962306a36Sopenharmony_ci#ifndef _ASM_LOONGARCH_NUMA_H 1062306a36Sopenharmony_ci#define _ASM_LOONGARCH_NUMA_H 1162306a36Sopenharmony_ci 1262306a36Sopenharmony_ci#include <linux/nodemask.h> 1362306a36Sopenharmony_ci 1462306a36Sopenharmony_ci#define NODE_ADDRSPACE_SHIFT 44 1562306a36Sopenharmony_ci 1662306a36Sopenharmony_ci#define pa_to_nid(addr) (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT) 1762306a36Sopenharmony_ci#define nid_to_addrbase(nid) (_ULCAST_(nid) << NODE_ADDRSPACE_SHIFT) 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci#ifdef CONFIG_NUMA 2062306a36Sopenharmony_ci 2162306a36Sopenharmony_ciextern int numa_off; 2262306a36Sopenharmony_ciextern s16 __cpuid_to_node[CONFIG_NR_CPUS]; 2362306a36Sopenharmony_ciextern nodemask_t numa_nodes_parsed __initdata; 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_cistruct numa_memblk { 2662306a36Sopenharmony_ci u64 start; 2762306a36Sopenharmony_ci u64 end; 2862306a36Sopenharmony_ci int nid; 2962306a36Sopenharmony_ci}; 3062306a36Sopenharmony_ci 3162306a36Sopenharmony_ci#define NR_NODE_MEMBLKS (MAX_NUMNODES*2) 3262306a36Sopenharmony_cistruct numa_meminfo { 3362306a36Sopenharmony_ci int nr_blks; 3462306a36Sopenharmony_ci struct numa_memblk blk[NR_NODE_MEMBLKS]; 3562306a36Sopenharmony_ci}; 3662306a36Sopenharmony_ci 3762306a36Sopenharmony_ciextern int __init numa_add_memblk(int nodeid, u64 start, u64 end); 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ciextern void __init early_numa_add_cpu(int cpuid, s16 node); 4062306a36Sopenharmony_ciextern void numa_add_cpu(unsigned int cpu); 4162306a36Sopenharmony_ciextern void numa_remove_cpu(unsigned int cpu); 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_cistatic inline void numa_clear_node(int cpu) 4462306a36Sopenharmony_ci{ 4562306a36Sopenharmony_ci} 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_cistatic inline void set_cpuid_to_node(int cpuid, s16 node) 4862306a36Sopenharmony_ci{ 4962306a36Sopenharmony_ci __cpuid_to_node[cpuid] = node; 5062306a36Sopenharmony_ci} 5162306a36Sopenharmony_ci 5262306a36Sopenharmony_ciextern int early_cpu_to_node(int cpu); 5362306a36Sopenharmony_ci 5462306a36Sopenharmony_ci#else 5562306a36Sopenharmony_ci 5662306a36Sopenharmony_cistatic inline void early_numa_add_cpu(int cpuid, s16 node) { } 5762306a36Sopenharmony_cistatic inline void numa_add_cpu(unsigned int cpu) { } 5862306a36Sopenharmony_cistatic inline void numa_remove_cpu(unsigned int cpu) { } 5962306a36Sopenharmony_ci 6062306a36Sopenharmony_cistatic inline int early_cpu_to_node(int cpu) 6162306a36Sopenharmony_ci{ 6262306a36Sopenharmony_ci return 0; 6362306a36Sopenharmony_ci} 6462306a36Sopenharmony_ci 6562306a36Sopenharmony_ci#endif /* CONFIG_NUMA */ 6662306a36Sopenharmony_ci 6762306a36Sopenharmony_ci#endif /* _ASM_LOONGARCH_NUMA_H */ 68