0384fff8c5
include: * Mutual exclusion is used instead of spl*(). See mutex(9). (Note: The alpha port is still in transition and currently uses both.) * Per-CPU idle processes. * Interrupts are run in their own separate kernel threads and can be preempted (i386 only). Partially contributed by: BSDi (BSD/OS) Submissions by (at least): cp, dfr, dillon, grog, jake, jhb, sheldonh
178 lines
4.9 KiB
C
178 lines
4.9 KiB
C
/*
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*
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* $FreeBSD$
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*
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*/
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#ifndef _MACHINE_SMP_H_
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#define _MACHINE_SMP_H_
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#ifdef _KERNEL
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#ifdef I386_CPU
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#error SMP not supported with I386_CPU
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#endif
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#if defined(SMP) && !defined(APIC_IO)
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# error APIC_IO required for SMP, add "options APIC_IO" to your config file.
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#endif /* SMP && !APIC_IO */
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/* Number of CPUs. */
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#if defined(SMP) && !defined(NCPU)
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# define NCPU 2
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#endif /* SMP && NCPU */
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/* Number of IO APICs. */
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#if defined(APIC_IO) && !defined(NAPIC)
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# define NAPIC 2
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#endif /* SMP && NAPIC */
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#if defined(SMP) || defined(APIC_IO)
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#ifndef LOCORE
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/*
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* For sending values to POST displays.
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* XXX FIXME: where does this really belong, isa.h/isa.c perhaps?
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*/
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extern int current_postcode; /** XXX currently in mp_machdep.c */
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#define POSTCODE(X) current_postcode = (X), \
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outb(0x80, current_postcode)
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#define POSTCODE_LO(X) current_postcode &= 0xf0, \
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current_postcode |= ((X) & 0x0f), \
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outb(0x80, current_postcode)
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#define POSTCODE_HI(X) current_postcode &= 0x0f, \
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current_postcode |= (((X) << 4) & 0xf0), \
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outb(0x80, current_postcode)
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#include <machine/apic.h>
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/* global data in mpboot.s */
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extern int bootMP_size;
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/* functions in mpboot.s */
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void bootMP __P((void));
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/* global data in apic_vector.s */
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extern volatile u_int stopped_cpus;
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extern volatile u_int started_cpus;
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extern volatile u_int checkstate_probed_cpus;
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extern volatile u_int checkstate_need_ast;
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extern volatile u_int resched_cpus;
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extern void (*cpustop_restartfunc) __P((void));
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/* functions in apic_ipl.s */
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void apic_eoi __P((void));
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u_int io_apic_read __P((int, int));
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void io_apic_write __P((int, int, u_int));
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/* global data in mp_machdep.c */
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extern int bsp_apic_ready;
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extern int mp_ncpus;
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extern int mp_naps;
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extern int mp_nbusses;
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extern int mp_napics;
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extern int mp_picmode;
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extern int boot_cpu_id;
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extern vm_offset_t cpu_apic_address;
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extern vm_offset_t io_apic_address[];
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extern u_int32_t cpu_apic_versions[];
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extern u_int32_t io_apic_versions[];
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extern int cpu_num_to_apic_id[];
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extern int io_num_to_apic_id[];
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extern int apic_id_to_logical[];
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#define APIC_INTMAPSIZE 24
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struct apic_intmapinfo {
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int ioapic;
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int int_pin;
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volatile void *apic_address;
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int redirindex;
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};
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extern struct apic_intmapinfo int_to_apicintpin[];
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extern u_int all_cpus;
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extern struct pcb stoppcbs[];
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/* functions in mp_machdep.c */
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u_int mp_bootaddress __P((u_int));
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int mp_probe __P((void));
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void mp_start __P((void));
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void mp_announce __P((void));
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u_int isa_apic_mask __P((u_int));
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int isa_apic_irq __P((int));
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int pci_apic_irq __P((int, int, int));
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int apic_irq __P((int, int));
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int next_apic_irq __P((int));
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int undirect_isa_irq __P((int));
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int undirect_pci_irq __P((int));
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int apic_bus_type __P((int));
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int apic_src_bus_id __P((int, int));
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int apic_src_bus_irq __P((int, int));
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int apic_int_type __P((int, int));
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int apic_trigger __P((int, int));
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int apic_polarity __P((int, int));
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void assign_apic_irq __P((int apic, int intpin, int irq));
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void revoke_apic_irq __P((int irq));
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void bsp_apic_configure __P((void));
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void init_secondary __P((void));
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void smp_invltlb __P((void));
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int stop_cpus __P((u_int));
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int restart_cpus __P((u_int));
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#ifdef BETTER_CLOCK
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void forward_statclock __P((int pscnt));
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void forward_hardclock __P((int pscnt));
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#endif /* BETTER_CLOCK */
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void forward_signal __P((struct proc *));
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void forward_roundrobin __P((void));
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#ifdef APIC_INTR_REORDER
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void set_lapic_isrloc __P((int, int));
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#endif /* APIC_INTR_REORDER */
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void smp_rendezvous_action __P((void));
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void smp_rendezvous __P((void (*)(void *),
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void (*)(void *),
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void (*)(void *),
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void *arg));
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/* global data in mpapic.c */
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extern volatile lapic_t lapic;
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extern volatile ioapic_t *ioapic[];
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/* functions in mpapic.c */
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void apic_dump __P((char*));
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void apic_initialize __P((void));
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void imen_dump __P((void));
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int apic_ipi __P((int, int, int));
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int selected_apic_ipi __P((u_int, int, int));
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int io_apic_setup __P((int));
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void io_apic_set_id __P((int, int));
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int io_apic_get_id __P((int));
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int ext_int_setup __P((int, int));
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#if defined(READY)
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void clr_io_apic_mask24 __P((int, u_int32_t));
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void set_io_apic_mask24 __P((int, u_int32_t));
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#endif /* READY */
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void set_apic_timer __P((int));
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int read_apic_timer __P((void));
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void u_sleep __P((int));
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/* global data in init_smp.c */
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extern int invltlb_ok;
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extern int smp_active;
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extern int smp_started;
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extern volatile int smp_idle_loops;
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#endif /* !LOCORE */
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#endif /* SMP && !APIC_IO */
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#endif /* _KERNEL */
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#endif /* _MACHINE_SMP_H_ */
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