1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_X86_MPSPEC_H
3#define _ASM_X86_MPSPEC_H
4
5
6#include <asm/mpspec_def.h>
7#include <asm/x86_init.h>
8#include <asm/apicdef.h>
9
10extern int pic_mode;
11
12#ifdef CONFIG_X86_32
13
14/*
15 * Summit or generic (i.e. installer) kernels need lots of bus entries.
16 * Maximum 256 PCI busses, plus 1 ISA bus in each of 4 cabinets.
17 */
18#if CONFIG_BASE_SMALL == 0
19# define MAX_MP_BUSSES		260
20#else
21# define MAX_MP_BUSSES		32
22#endif
23
24#define MAX_IRQ_SOURCES		256
25
26#else /* CONFIG_X86_64: */
27
28#define MAX_MP_BUSSES		256
29/* Each PCI slot may be a combo card with its own bus.  4 IRQ pins per slot. */
30#define MAX_IRQ_SOURCES		(MAX_MP_BUSSES * 4)
31
32#endif /* CONFIG_X86_64 */
33
34#ifdef CONFIG_EISA
35extern int mp_bus_id_to_type[MAX_MP_BUSSES];
36#endif
37
38extern DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
39
40extern unsigned int boot_cpu_physical_apicid;
41extern u8 boot_cpu_apic_version;
42
43#ifdef CONFIG_X86_LOCAL_APIC
44extern int smp_found_config;
45#else
46# define smp_found_config 0
47#endif
48
49static inline void get_smp_config(void)
50{
51	x86_init.mpparse.get_smp_config(0);
52}
53
54static inline void early_get_smp_config(void)
55{
56	x86_init.mpparse.get_smp_config(1);
57}
58
59static inline void find_smp_config(void)
60{
61	x86_init.mpparse.find_smp_config();
62}
63
64#ifdef CONFIG_X86_MPPARSE
65extern void e820__memblock_alloc_reserved_mpc_new(void);
66extern int enable_update_mptable;
67extern void default_find_smp_config(void);
68extern void default_get_smp_config(unsigned int early);
69#else
70static inline void e820__memblock_alloc_reserved_mpc_new(void) { }
71#define enable_update_mptable 0
72#define default_find_smp_config x86_init_noop
73#define default_get_smp_config x86_init_uint_noop
74#endif
75
76int generic_processor_info(int apicid);
77
78#define PHYSID_ARRAY_SIZE	BITS_TO_LONGS(MAX_LOCAL_APIC)
79
80struct physid_mask {
81	unsigned long mask[PHYSID_ARRAY_SIZE];
82};
83
84typedef struct physid_mask physid_mask_t;
85
86#define physid_set(physid, map)			set_bit(physid, (map).mask)
87#define physid_isset(physid, map)		test_bit(physid, (map).mask)
88
89#define physids_or(dst, src1, src2)					\
90	bitmap_or((dst).mask, (src1).mask, (src2).mask, MAX_LOCAL_APIC)
91
92#define physids_clear(map)					\
93	bitmap_zero((map).mask, MAX_LOCAL_APIC)
94
95#define physids_empty(map)					\
96	bitmap_empty((map).mask, MAX_LOCAL_APIC)
97
98static inline void physids_promote(unsigned long physids, physid_mask_t *map)
99{
100	physids_clear(*map);
101	map->mask[0] = physids;
102}
103
104static inline void physid_set_mask_of_physid(int physid, physid_mask_t *map)
105{
106	physids_clear(*map);
107	physid_set(physid, *map);
108}
109
110#define PHYSID_MASK_ALL		{ {[0 ... PHYSID_ARRAY_SIZE-1] = ~0UL} }
111#define PHYSID_MASK_NONE	{ {[0 ... PHYSID_ARRAY_SIZE-1] = 0UL} }
112
113extern physid_mask_t phys_cpu_present_map;
114
115#endif /* _ASM_X86_MPSPEC_H */
116