1#ifndef _ASM_POWERPC_TOPOLOGY_H
2#define _ASM_POWERPC_TOPOLOGY_H
3#ifdef __KERNEL__
4
5
6struct sys_device;
7struct device_node;
8
9#ifdef CONFIG_NUMA
10
11#include <asm/mmzone.h>
12
13static inline int cpu_to_node(int cpu)
14{
15	return numa_cpu_lookup_table[cpu];
16}
17
18#define parent_node(node)	(node)
19
20static inline cpumask_t node_to_cpumask(int node)
21{
22	return numa_cpumask_lookup_table[node];
23}
24
25static inline int node_to_first_cpu(int node)
26{
27	cpumask_t tmp;
28	tmp = node_to_cpumask(node);
29	return first_cpu(tmp);
30}
31
32int of_node_to_nid(struct device_node *device);
33
34struct pci_bus;
35#ifdef CONFIG_PCI
36extern int pcibus_to_node(struct pci_bus *bus);
37#else
38static inline int pcibus_to_node(struct pci_bus *bus)
39{
40	return -1;
41}
42#endif
43
44#define pcibus_to_cpumask(bus)	(pcibus_to_node(bus) == -1 ? \
45					CPU_MASK_ALL : \
46					node_to_cpumask(pcibus_to_node(bus)) \
47				)
48
49/* sched_domains SD_NODE_INIT for PPC64 machines */
50#define SD_NODE_INIT (struct sched_domain) {		\
51	.span			= CPU_MASK_NONE,	\
52	.parent			= NULL,			\
53	.child			= NULL,			\
54	.groups			= NULL,			\
55	.min_interval		= 8,			\
56	.max_interval		= 32,			\
57	.busy_factor		= 32,			\
58	.imbalance_pct		= 125,			\
59	.cache_nice_tries	= 1,			\
60	.busy_idx		= 3,			\
61	.idle_idx		= 1,			\
62	.newidle_idx		= 2,			\
63	.wake_idx		= 1,			\
64	.flags			= SD_LOAD_BALANCE	\
65				| SD_BALANCE_EXEC	\
66				| SD_BALANCE_NEWIDLE	\
67				| SD_WAKE_IDLE		\
68				| SD_SERIALIZE		\
69				| SD_WAKE_BALANCE,	\
70	.last_balance		= jiffies,		\
71	.balance_interval	= 1,			\
72	.nr_balance_failed	= 0,			\
73}
74
75extern void __init dump_numa_cpu_topology(void);
76
77extern int sysfs_add_device_to_node(struct sys_device *dev, int nid);
78extern void sysfs_remove_device_from_node(struct sys_device *dev, int nid);
79
80#else
81
82static inline int of_node_to_nid(struct device_node *device)
83{
84	return 0;
85}
86
87static inline void dump_numa_cpu_topology(void) {}
88
89static inline int sysfs_add_device_to_node(struct sys_device *dev, int nid)
90{
91	return 0;
92}
93
94static inline void sysfs_remove_device_from_node(struct sys_device *dev,
95						int nid)
96{
97}
98
99
100#include <asm-generic/topology.h>
101
102#endif /* CONFIG_NUMA */
103
104#ifdef CONFIG_SMP
105#include <asm/cputable.h>
106#define smt_capable()		(cpu_has_feature(CPU_FTR_SMT))
107
108#ifdef CONFIG_PPC64
109#include <asm/smp.h>
110
111#define topology_thread_siblings(cpu)	(cpu_sibling_map[cpu])
112#endif
113#endif
114
115#endif /* __KERNEL__ */
116#endif	/* _ASM_POWERPC_TOPOLOGY_H */
117