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 
25 #define LEVELS_PER_SLICE 128
26 
27 struct slice_data {
28 	unsigned long irq_enable_mask[2];
29 	int level_to_irq[LEVELS_PER_SLICE];
30 };
31 
32 struct hub_data {
33 	cpumask_t	h_cpus;
34 	unsigned long slice_map;
35 	unsigned long irq_alloc_mask[2];
36 	struct slice_data slice[2];
37 };
38 
39 struct node_data {
40 	struct pglist_data pglist;
41 	struct hub_data hub;
42 	cpumask_t cpumask;
43 };
44 
45 extern struct node_data *__node_data[];
46 
47 #define NODE_DATA(n)		(&__node_data[(n)]->pglist)
48 #define hub_data(n)		(&__node_data[(n)]->hub)
49 
50 extern void setup_zero_pages(void);
51 extern void __init prom_init_numa_memory(void);
52 
53 #endif /* _ASM_MACH_MMZONE_H */
54