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b24c2a925a
linux-next/arch/x86/include/asm/mpspec.h
Yinghai Lu b24c2a925a x86: Move find_smp_config() earlier and avoid bootmem usage 
Move the find_smp_config() call to before bootmem is initialized.
Use reserve_early() instead of reserve_bootmem() in it.

This simplifies the code, we only need to call find_smp_config()
once and can remove the now unneeded reserve parameter from
x86_init_mpparse::find_smp_config.

We thus also reduce x86's dependency on bootmem allocations.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <4B0BB9F2.70907@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-11-24 12:10:51 +01:00

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#ifndef _ASM_X86_MPSPEC_H
#define _ASM_X86_MPSPEC_H
#include <linux/init.h>
#include <asm/mpspec_def.h>
#include <asm/x86_init.h>
extern int apic_version[MAX_APICS];
extern int pic_mode;
#ifdef CONFIG_X86_32
/*
* Summit or generic (i.e. installer) kernels need lots of bus entries.
* Maximum 256 PCI busses, plus 1 ISA bus in each of 4 cabinets.
*/
#if CONFIG_BASE_SMALL == 0
# define MAX_MP_BUSSES 260
#else
# define MAX_MP_BUSSES 32
#endif
#define MAX_IRQ_SOURCES 256
extern unsigned int def_to_bigsmp;
extern u8 apicid_2_node[];
#ifdef CONFIG_X86_NUMAQ
extern int mp_bus_id_to_node[MAX_MP_BUSSES];
extern int mp_bus_id_to_local[MAX_MP_BUSSES];
extern int quad_local_to_mp_bus_id [NR_CPUS/4][4];
#endif
#define MAX_APICID 256
#else /* CONFIG_X86_64: */
#define MAX_MP_BUSSES 256
/* Each PCI slot may be a combo card with its own bus. 4 IRQ pins per slot. */
#define MAX_IRQ_SOURCES (MAX_MP_BUSSES * 4)
#endif /* CONFIG_X86_64 */
#if defined(CONFIG_MCA) || defined(CONFIG_EISA)
extern int mp_bus_id_to_type[MAX_MP_BUSSES];
#endif
extern DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
extern unsigned int boot_cpu_physical_apicid;
extern unsigned int max_physical_apicid;
extern int mpc_default_type;
extern unsigned long mp_lapic_addr;
#ifdef CONFIG_X86_LOCAL_APIC
extern int smp_found_config;
#else
# define smp_found_config 0
#endif
static inline void get_smp_config(void)
{
x86_init.mpparse.get_smp_config(0);
}
static inline void early_get_smp_config(void)
{
x86_init.mpparse.get_smp_config(1);
}
static inline void find_smp_config(void)
{
x86_init.mpparse.find_smp_config();
}
#ifdef CONFIG_X86_MPPARSE
extern void early_reserve_e820_mpc_new(void);
extern int enable_update_mptable;
extern int default_mpc_apic_id(struct mpc_cpu *m);
extern void default_smp_read_mpc_oem(struct mpc_table *mpc);
# ifdef CONFIG_X86_IO_APIC
extern void default_mpc_oem_bus_info(struct mpc_bus *m, char *str);
# else
# define default_mpc_oem_bus_info NULL
# endif
extern void default_find_smp_config(void);
extern void default_get_smp_config(unsigned int early);
#else
static inline void early_reserve_e820_mpc_new(void) { }
#define enable_update_mptable 0
#define default_mpc_apic_id NULL
#define default_smp_read_mpc_oem NULL
#define default_mpc_oem_bus_info NULL
#define default_find_smp_config x86_init_noop
#define default_get_smp_config x86_init_uint_noop
#endif
void __cpuinit generic_processor_info(int apicid, int version);
#ifdef CONFIG_ACPI
extern void mp_register_ioapic(int id, u32 address, u32 gsi_base);
extern void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
u32 gsi);
extern void mp_config_acpi_legacy_irqs(void);
struct device;
extern int mp_register_gsi(struct device *dev, u32 gsi, int edge_level,
int active_high_low);
extern int acpi_probe_gsi(void);
#ifdef CONFIG_X86_IO_APIC
extern int mp_find_ioapic(int gsi);
extern int mp_find_ioapic_pin(int ioapic, int gsi);
#endif
#else /* !CONFIG_ACPI: */
static inline int acpi_probe_gsi(void)
{
return 0;
}
#endif /* CONFIG_ACPI */
#define PHYSID_ARRAY_SIZE BITS_TO_LONGS(MAX_APICS)
struct physid_mask {
unsigned long mask[PHYSID_ARRAY_SIZE];
};
typedef struct physid_mask physid_mask_t;
#define physid_set(physid, map) set_bit(physid, (map).mask)
#define physid_clear(physid, map) clear_bit(physid, (map).mask)
#define physid_isset(physid, map) test_bit(physid, (map).mask)
#define physid_test_and_set(physid, map) \
test_and_set_bit(physid, (map).mask)
#define physids_and(dst, src1, src2) \
bitmap_and((dst).mask, (src1).mask, (src2).mask, MAX_APICS)
#define physids_or(dst, src1, src2) \
bitmap_or((dst).mask, (src1).mask, (src2).mask, MAX_APICS)
#define physids_clear(map) \
bitmap_zero((map).mask, MAX_APICS)
#define physids_complement(dst, src) \
bitmap_complement((dst).mask, (src).mask, MAX_APICS)
#define physids_empty(map) \
bitmap_empty((map).mask, MAX_APICS)
#define physids_equal(map1, map2) \
bitmap_equal((map1).mask, (map2).mask, MAX_APICS)
#define physids_weight(map) \
bitmap_weight((map).mask, MAX_APICS)
#define physids_shift_right(d, s, n) \
bitmap_shift_right((d).mask, (s).mask, n, MAX_APICS)
#define physids_shift_left(d, s, n) \
bitmap_shift_left((d).mask, (s).mask, n, MAX_APICS)
#define physids_coerce(map) ((map).mask[0])
#define physids_promote(physids) \
({ \
physid_mask_t __physid_mask = PHYSID_MASK_NONE; \
__physid_mask.mask[0] = physids; \
__physid_mask; \
})
/* Note: will create very large stack frames if physid_mask_t is big */
#define physid_mask_of_physid(physid) \
({ \
physid_mask_t __physid_mask = PHYSID_MASK_NONE; \
physid_set(physid, __physid_mask); \
__physid_mask; \
})
static inline void physid_set_mask_of_physid(int physid, physid_mask_t *map)
{
physids_clear(*map);
physid_set(physid, *map);
}
#define PHYSID_MASK_ALL { {[0 ... PHYSID_ARRAY_SIZE-1] = ~0UL} }
#define PHYSID_MASK_NONE { {[0 ... PHYSID_ARRAY_SIZE-1] = 0UL} }
extern physid_mask_t phys_cpu_present_map;
extern int generic_mps_oem_check(struct mpc_table *, char *, char *);
extern int default_acpi_madt_oem_check(char *, char *);
#endif /* _ASM_X86_MPSPEC_H */
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