1 /*
2  * Copyright (C) 2010 Loongson Inc. & Lemote Inc. &
3  *                    Institute of Computing Technology
4  * Author:  Xiang Gao, gaoxiang@ict.ac.cn
5  *          Huacai Chen, chenhc@lemote.com
6  *          Xiaofu Meng, Shuangshuang Zhang
7  *
8  * This program is free software; you can redistribute  it and/or modify it
9  * under  the terms of  the GNU General  Public License as published by the
10  * Free Software Foundation;  either version 2 of the  License, or (at your
11  * option) any later version.
12  */
13 #ifndef _ASM_MACH_MMZONE_H
14 #define _ASM_MACH_MMZONE_H
15 
16 #include <boot_param.h>
17 #define NODE_ADDRSPACE_SHIFT 44
18 #define NODE0_ADDRSPACE_OFFSET 0x000000000000UL
19 #define NODE1_ADDRSPACE_OFFSET 0x100000000000UL
20 #define NODE2_ADDRSPACE_OFFSET 0x200000000000UL
21 #define NODE3_ADDRSPACE_OFFSET 0x300000000000UL
22 
23 #define pa_to_nid(addr)  (((addr) & 0xf00000000000) >> NODE_ADDRSPACE_SHIFT)
24 #define nid_to_addrbase(nid) ((nid) << NODE_ADDRSPACE_SHIFT)
25 
26 #define LEVELS_PER_SLICE 128
27 
28 struct slice_data {
29 	unsigned long irq_enable_mask[2];
30 	int level_to_irq[LEVELS_PER_SLICE];
31 };
32 
33 struct hub_data {
34 	cpumask_t	h_cpus;
35 	unsigned long slice_map;
36 	unsigned long irq_alloc_mask[2];
37 	struct slice_data slice[2];
38 };
39 
40 struct node_data {
41 	struct pglist_data pglist;
42 	struct hub_data hub;
43 	cpumask_t cpumask;
44 };
45 
46 extern struct node_data *__node_data[];
47 
48 #define NODE_DATA(n)		(&__node_data[(n)]->pglist)
49 #define hub_data(n)		(&__node_data[(n)]->hub)
50 
51 extern void setup_zero_pages(void);
52 extern void __init prom_init_numa_memory(void);
53 
54 #endif /* _ASM_MACH_MMZONE_H */
55