freebsd-skq/sys/i386/include/smp.h
John Baldwin 147ad8d5ad New i386 SMP code:
- The MP code no longer knows anything specific about an MP Table.
  Instead, the local APIC code adds CPUs via the cpu_add() function when
  a local APIC is enumerated by an APIC enumerator.
- Don't divide the argument to mp_bootaddress() by 1024 just so that we
  can turn around and mulitply it by 1024 again.
- We no longer panic if SMP is enabled but we are booted on a UP machine.
- init_secondary(), the asm code between init_secondary() and ap_init()
  in mpboot.s and ap_init() have all been merged together in C into
  init_secondary().
- We now use the cpuid feature bits to determine if we should enable
  PSE, PGE, or VME on each AP.
- Due to the change in the implementation of critical sections, acquire
  the SMP TLB mutex around a slightly larger chunk of code for TLB
  shootdowns.
- Remove some of the debug code from the original SMP implementation
  that is no longer used or no longer applies to the new APIC code.
- Use a temporary hack to disable the ACPI module until the SMP code has
  been further reorganized to allow ACPI to work as a module again.
- Add a DDB command to dump the interesting contents of the IDT.
2003-11-03 22:32:04 +00:00

91 lines
2.7 KiB
C

/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*
*/
#ifndef _MACHINE_SMP_H_
#define _MACHINE_SMP_H_
#ifdef _KERNEL
#ifdef SMP
#ifndef LOCORE
/*
* For sending values to POST displays.
* XXX FIXME: where does this really belong, isa.h/isa.c perhaps?
*/
extern int current_postcode; /** XXX currently in mp_machdep.c */
#define POSTCODE(X) current_postcode = (X), \
outb(0x80, current_postcode)
#define POSTCODE_LO(X) current_postcode &= 0xf0, \
current_postcode |= ((X) & 0x0f), \
outb(0x80, current_postcode)
#define POSTCODE_HI(X) current_postcode &= 0x0f, \
current_postcode |= (((X) << 4) & 0xf0), \
outb(0x80, current_postcode)
#include <sys/bus.h>
#include <machine/frame.h>
#include <machine/intr_machdep.h>
#include <machine/apicvar.h>
/* global data in mpboot.s */
extern int bootMP_size;
/* functions in mpboot.s */
void bootMP(void);
/* global data in mp_machdep.c */
extern int mp_naps;
extern int boot_cpu_id;
extern struct pcb stoppcbs[];
extern struct mtx smp_tlb_mtx;
/* IPI handlers */
inthand_t
IDTVEC(invltlb), /* TLB shootdowns - global */
IDTVEC(invlpg), /* TLB shootdowns - 1 page */
IDTVEC(invlrng), /* TLB shootdowns - page range */
IDTVEC(hardclock), /* Forward hardclock() */
IDTVEC(statclock), /* Forward statclock() */
IDTVEC(cpuast), /* Additional software trap on other cpu */
IDTVEC(cpustop), /* CPU stops & waits to be restarted */
IDTVEC(rendezvous), /* handle CPU rendezvous */
IDTVEC(lazypmap); /* handle lazy pmap release */
/* functions in mp_machdep.c */
void cpu_add(u_int apic_id, char boot_cpu);
void init_secondary(void);
void ipi_selected(u_int cpus, u_int ipi);
void ipi_all(u_int ipi);
void ipi_all_but_self(u_int ipi);
void ipi_self(u_int ipi);
void forward_statclock(void);
void forwarded_statclock(struct clockframe frame);
void forward_hardclock(void);
void forwarded_hardclock(struct clockframe frame);
u_int mp_bootaddress(u_int);
int mp_grab_cpu_hlt(void);
void smp_invlpg(vm_offset_t addr);
void smp_masked_invlpg(u_int mask, vm_offset_t addr);
void smp_invlpg_range(vm_offset_t startva, vm_offset_t endva);
void smp_masked_invlpg_range(u_int mask, vm_offset_t startva,
vm_offset_t endva);
void smp_invltlb(void);
void smp_masked_invltlb(u_int mask);
#endif /* !LOCORE */
#endif /* SMP */
#endif /* _KERNEL */
#endif /* _MACHINE_SMP_H_ */