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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Author: Jianmin Lv <lvjianmin@loongson.cn>
* Huacai Chen <chenhuacai@loongson.cn>
*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#ifndef _ASM_LOONGARCH_NUMA_H
#define _ASM_LOONGARCH_NUMA_H
#include <linux/nodemask.h>
#define NODE_ADDRSPACE_SHIFT 44
#define pa_to_nid(addr) (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT)
#define nid_to_addrbase(nid) (_ULCAST_(nid) << NODE_ADDRSPACE_SHIFT)
#ifdef CONFIG_NUMA
extern int numa_off;
extern s16 __cpuid_to_node[CONFIG_NR_CPUS];
extern nodemask_t numa_nodes_parsed __initdata;
struct numa_memblk {
u64 start;
u64 end;
int nid;
};
#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
struct numa_meminfo {
int nr_blks;
struct numa_memblk blk[NR_NODE_MEMBLKS];
};
extern int __init numa_add_memblk(int nodeid, u64 start, u64 end);
extern void __init early_numa_add_cpu(int cpuid, s16 node);
extern void numa_add_cpu(unsigned int cpu);
extern void numa_remove_cpu(unsigned int cpu);
static inline void numa_clear_node(int cpu)
{
}
static inline void set_cpuid_to_node(int cpuid, s16 node)
{
__cpuid_to_node[cpuid] = node;
}
extern int early_cpu_to_node(int cpu);
#else
static inline void early_numa_add_cpu(int cpuid, s16 node) { }
static inline void numa_add_cpu(unsigned int cpu) { }
static inline void numa_remove_cpu(unsigned int cpu) { }
static inline void set_cpuid_to_node(int cpuid, s16 node) { }
static inline int early_cpu_to_node(int cpu)
{
return 0;
}
#endif /* CONFIG_NUMA */
#endif /* _ASM_LOONGARCH_NUMA_H */