1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Copyright (C) 2010 Loongson Inc. & Lemote Inc. &
4  *                    Institute of Computing Technology
5  * Author:  Xiang Gao, gaoxiang@ict.ac.cn
6  *          Huacai Chen, chenhc@lemote.com
7  *          Xiaofu Meng, Shuangshuang Zhang
8  */
9 #ifndef _ASM_MACH_LOONGSON64_MMZONE_H
10 #define _ASM_MACH_LOONGSON64_MMZONE_H
11 
12 #define NODE_ADDRSPACE_SHIFT 44
13 
14 #define pa_to_nid(addr)  (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT)
15 #define nid_to_addrbase(nid) ((unsigned long)(nid) << NODE_ADDRSPACE_SHIFT)
16 
17 extern struct pglist_data *__node_data[];
18 
19 #define NODE_DATA(n)		(__node_data[n])
20 
21 extern void setup_zero_pages(void);
22 extern void __init prom_init_numa_memory(void);
23 
24 #endif /* _ASM_MACH_MMZONE_H */
25