LXR linux/arch/x86/include/asm/mpspec.h

   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
  26extern unsigned int def_to_bigsmp;
  27
  28#else /* CONFIG_X86_64: */
  29
  30#define MAX_MP_BUSSES           256
  31/* Each PCI slot may be a combo card with its own bus.  4 IRQ pins per slot. */
  32#define MAX_IRQ_SOURCES         (MAX_MP_BUSSES * 4)
  33
  34#endif /* CONFIG_X86_64 */
  35
  36#ifdef CONFIG_EISA
  37extern int mp_bus_id_to_type[MAX_MP_BUSSES];
  38#endif
  39
  40extern DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
  41
  42extern unsigned int boot_cpu_physical_apicid;
  43extern u8 boot_cpu_apic_version;
  44extern unsigned long mp_lapic_addr;
  45
  46#ifdef CONFIG_X86_LOCAL_APIC
  47extern int smp_found_config;
  48#else
  49# define smp_found_config 0
  50#endif
  51
  52static inline void get_smp_config(void)
  53{
  54        x86_init.mpparse.get_smp_config(0);
  55}
  56
  57static inline void early_get_smp_config(void)
  58{
  59        x86_init.mpparse.get_smp_config(1);
  60}
  61
  62static inline void find_smp_config(void)
  63{
  64        x86_init.mpparse.find_smp_config();
  65}
  66
  67#ifdef CONFIG_X86_MPPARSE
  68extern void e820__memblock_alloc_reserved_mpc_new(void);
  69extern int enable_update_mptable;
  70extern int default_mpc_apic_id(struct mpc_cpu *m);
  71extern void default_smp_read_mpc_oem(struct mpc_table *mpc);
  72# ifdef CONFIG_X86_IO_APIC
  73extern void default_mpc_oem_bus_info(struct mpc_bus *m, char *str);
  74# else
  75#  define default_mpc_oem_bus_info NULL
  76# endif
  77extern void default_find_smp_config(void);
  78extern void default_get_smp_config(unsigned int early);
  79#else
  80static inline void e820__memblock_alloc_reserved_mpc_new(void) { }
  81#define enable_update_mptable 0
  82#define default_mpc_apic_id NULL
  83#define default_smp_read_mpc_oem NULL
  84#define default_mpc_oem_bus_info NULL
  85#define default_find_smp_config x86_init_noop
  86#define default_get_smp_config x86_init_uint_noop
  87#endif
  88
  89int generic_processor_info(int apicid, int version);
  90
  91#define PHYSID_ARRAY_SIZE       BITS_TO_LONGS(MAX_LOCAL_APIC)
  92
  93struct physid_mask {
  94        unsigned long mask[PHYSID_ARRAY_SIZE];
  95};
  96
  97typedef struct physid_mask physid_mask_t;
  98
  99#define physid_set(physid, map)                 set_bit(physid, (map).mask)
 100#define physid_clear(physid, map)               clear_bit(physid, (map).mask)
 101#define physid_isset(physid, map)               test_bit(physid, (map).mask)
 102#define physid_test_and_set(physid, map)                        \
 103        test_and_set_bit(physid, (map).mask)
 104
 105#define physids_and(dst, src1, src2)                                    \
 106        bitmap_and((dst).mask, (src1).mask, (src2).mask, MAX_LOCAL_APIC)
 107
 108#define physids_or(dst, src1, src2)                                     \
 109        bitmap_or((dst).mask, (src1).mask, (src2).mask, MAX_LOCAL_APIC)
 110
 111#define physids_clear(map)                                      \
 112        bitmap_zero((map).mask, MAX_LOCAL_APIC)
 113
 114#define physids_complement(dst, src)                            \
 115        bitmap_complement((dst).mask, (src).mask, MAX_LOCAL_APIC)
 116
 117#define physids_empty(map)                                      \
 118        bitmap_empty((map).mask, MAX_LOCAL_APIC)
 119
 120#define physids_equal(map1, map2)                               \
 121        bitmap_equal((map1).mask, (map2).mask, MAX_LOCAL_APIC)
 122
 123#define physids_weight(map)                                     \
 124        bitmap_weight((map).mask, MAX_LOCAL_APIC)
 125
 126#define physids_shift_right(d, s, n)                            \
 127        bitmap_shift_right((d).mask, (s).mask, n, MAX_LOCAL_APIC)
 128
 129#define physids_shift_left(d, s, n)                             \
 130        bitmap_shift_left((d).mask, (s).mask, n, MAX_LOCAL_APIC)
 131
 132static inline unsigned long physids_coerce(physid_mask_t *map)
 133{
 134        return map->mask[0];
 135}
 136
 137static inline void physids_promote(unsigned long physids, physid_mask_t *map)
 138{
 139        physids_clear(*map);
 140        map->mask[0] = physids;
 141}
 142
 143static inline void physid_set_mask_of_physid(int physid, physid_mask_t *map)
 144{
 145        physids_clear(*map);
 146        physid_set(physid, *map);
 147}
 148
 149#define PHYSID_MASK_ALL         { {[0 ... PHYSID_ARRAY_SIZE-1] = ~0UL} }
 150#define PHYSID_MASK_NONE        { {[0 ... PHYSID_ARRAY_SIZE-1] = 0UL} }
 151
 152extern physid_mask_t phys_cpu_present_map;
 153
 154#endif /* _ASM_X86_MPSPEC_H */
 155