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 #include <boot_param.h>
13 #define NODE_ADDRSPACE_SHIFT 44
14 #define NODE0_ADDRSPACE_OFFSET 0x000000000000UL
15 #define NODE1_ADDRSPACE_OFFSET 0x100000000000UL
16 #define NODE2_ADDRSPACE_OFFSET 0x200000000000UL
17 #define NODE3_ADDRSPACE_OFFSET 0x300000000000UL
18 
19 #define pa_to_nid(addr)  (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT)
20 #define nid_to_addrbase(nid) ((nid) << NODE_ADDRSPACE_SHIFT)
21 
22 extern struct pglist_data *__node_data[];
23 
24 #define NODE_DATA(n)		(__node_data[n])
25 
26 extern void setup_zero_pages(void);
27 extern void __init prom_init_numa_memory(void);
28 
29 #endif /* _ASM_MACH_MMZONE_H */
30