1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_S390_TOPOLOGY_H
3#define _ASM_S390_TOPOLOGY_H
4
5#include <linux/cpumask.h>
6#include <asm/numa.h>
7
8struct sysinfo_15_1_x;
9struct cpu;
10
11#ifdef CONFIG_SCHED_TOPOLOGY
12
13struct cpu_topology_s390 {
14	unsigned short thread_id;
15	unsigned short core_id;
16	unsigned short socket_id;
17	unsigned short book_id;
18	unsigned short drawer_id;
19	unsigned short dedicated : 1;
20	int booted_cores;
21	cpumask_t thread_mask;
22	cpumask_t core_mask;
23	cpumask_t book_mask;
24	cpumask_t drawer_mask;
25};
26
27extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
28
29#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
30#define topology_thread_id(cpu)		  (cpu_topology[cpu].thread_id)
31#define topology_sibling_cpumask(cpu)	  (&cpu_topology[cpu].thread_mask)
32#define topology_core_id(cpu)		  (cpu_topology[cpu].core_id)
33#define topology_core_cpumask(cpu)	  (&cpu_topology[cpu].core_mask)
34#define topology_book_id(cpu)		  (cpu_topology[cpu].book_id)
35#define topology_book_cpumask(cpu)	  (&cpu_topology[cpu].book_mask)
36#define topology_drawer_id(cpu)		  (cpu_topology[cpu].drawer_id)
37#define topology_drawer_cpumask(cpu)	  (&cpu_topology[cpu].drawer_mask)
38#define topology_cpu_dedicated(cpu)	  (cpu_topology[cpu].dedicated)
39#define topology_booted_cores(cpu)	  (cpu_topology[cpu].booted_cores)
40
41#define mc_capable() 1
42
43void topology_init_early(void);
44int topology_cpu_init(struct cpu *);
45int topology_set_cpu_management(int fc);
46void topology_schedule_update(void);
47void store_topology(struct sysinfo_15_1_x *info);
48void update_cpu_masks(void);
49void topology_expect_change(void);
50const struct cpumask *cpu_coregroup_mask(int cpu);
51
52#else /* CONFIG_SCHED_TOPOLOGY */
53
54static inline void topology_init_early(void) { }
55static inline void topology_schedule_update(void) { }
56static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
57static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
58static inline int topology_booted_cores(int cpu_nr) { return 1; }
59static inline void update_cpu_masks(void) { }
60static inline void topology_expect_change(void) { }
61
62#endif /* CONFIG_SCHED_TOPOLOGY */
63
64#define POLARIZATION_UNKNOWN	(-1)
65#define POLARIZATION_HRZ	(0)
66#define POLARIZATION_VL		(1)
67#define POLARIZATION_VM		(2)
68#define POLARIZATION_VH		(3)
69
70#define SD_BOOK_INIT	SD_CPU_INIT
71
72#ifdef CONFIG_NUMA
73
74#define cpu_to_node cpu_to_node
75static inline int cpu_to_node(int cpu)
76{
77	return 0;
78}
79
80/* Returns a pointer to the cpumask of CPUs on node 'node'. */
81#define cpumask_of_node cpumask_of_node
82static inline const struct cpumask *cpumask_of_node(int node)
83{
84	return cpu_possible_mask;
85}
86
87#define pcibus_to_node(bus) __pcibus_to_node(bus)
88
89#else /* !CONFIG_NUMA */
90
91#define numa_node_id numa_node_id
92static inline int numa_node_id(void)
93{
94	return 0;
95}
96
97#endif /* CONFIG_NUMA */
98
99#include <asm-generic/topology.h>
100
101#endif /* _ASM_S390_TOPOLOGY_H */
102