The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/x86/include/x86_smp.h

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    1 /*-
    2  * SPDX-License-Identifier: Beerware
    3  *
    4  * ----------------------------------------------------------------------------
    5  * "THE BEER-WARE LICENSE" (Revision 42):
    6  * <phk@FreeBSD.org> wrote this file.  As long as you retain this notice you
    7  * can do whatever you want with this stuff. If we meet some day, and you think
    8  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
    9  * ----------------------------------------------------------------------------
   10  *
   11  * $FreeBSD: releng/12.0/sys/x86/include/x86_smp.h 332073 2018-04-05 14:39:51Z royger $
   12  *
   13  */
   14 
   15 #ifndef _X86_X86_SMP_H_
   16 #define _X86_X86_SMP_H_
   17 
   18 #include <sys/bus.h>
   19 #include <machine/frame.h>
   20 #include <machine/intr_machdep.h>
   21 #include <x86/apicvar.h>
   22 #include <machine/pcb.h>
   23 
   24 struct pmap;
   25 
   26 /* global data in mp_x86.c */
   27 extern int mp_naps;
   28 extern int boot_cpu_id;
   29 extern struct pcb stoppcbs[];
   30 extern int cpu_apic_ids[];
   31 extern int bootAP;
   32 extern void *dpcpu;
   33 extern char *bootSTK;
   34 extern void *bootstacks[];
   35 extern unsigned int boot_address;
   36 extern unsigned int bootMP_size;
   37 extern volatile u_int cpu_ipi_pending[];
   38 extern volatile int aps_ready;
   39 extern struct mtx ap_boot_mtx;
   40 extern int cpu_logical;
   41 extern int cpu_cores;
   42 extern volatile uint32_t smp_tlb_generation;
   43 extern struct pmap *smp_tlb_pmap;
   44 extern vm_offset_t smp_tlb_addr1, smp_tlb_addr2;
   45 extern u_int xhits_gbl[];
   46 extern u_int xhits_pg[];
   47 extern u_int xhits_rng[];
   48 extern u_int ipi_global;
   49 extern u_int ipi_page;
   50 extern u_int ipi_range;
   51 extern u_int ipi_range_size;
   52 
   53 extern int nmi_kdb_lock;
   54 extern int nmi_is_broadcast;
   55 
   56 struct cpu_info {
   57         int     cpu_present:1;
   58         int     cpu_bsp:1;
   59         int     cpu_disabled:1;
   60         int     cpu_hyperthread:1;
   61 };
   62 extern struct cpu_info *cpu_info;
   63 
   64 #ifdef COUNT_IPIS
   65 extern u_long *ipi_invltlb_counts[MAXCPU];
   66 extern u_long *ipi_invlrng_counts[MAXCPU];
   67 extern u_long *ipi_invlpg_counts[MAXCPU];
   68 extern u_long *ipi_invlcache_counts[MAXCPU];
   69 extern u_long *ipi_rendezvous_counts[MAXCPU];
   70 #endif
   71 
   72 /* IPI handlers */
   73 inthand_t
   74         IDTVEC(invltlb),        /* TLB shootdowns - global */
   75         IDTVEC(invlpg),         /* TLB shootdowns - 1 page */
   76         IDTVEC(invlrng),        /* TLB shootdowns - page range */
   77         IDTVEC(invlcache),      /* Write back and invalidate cache */
   78         IDTVEC(ipi_intr_bitmap_handler), /* Bitmap based IPIs */ 
   79         IDTVEC(cpustop),        /* CPU stops & waits to be restarted */
   80         IDTVEC(cpususpend),     /* CPU suspends & waits to be resumed */
   81         IDTVEC(rendezvous);     /* handle CPU rendezvous */
   82 
   83 /* functions in x86_mp.c */
   84 void    assign_cpu_ids(void);
   85 void    cpu_add(u_int apic_id, char boot_cpu);
   86 void    cpustop_handler(void);
   87 void    cpususpend_handler(void);
   88 void    alloc_ap_trampoline(vm_paddr_t *physmap, unsigned int *physmap_idx);
   89 void    init_secondary_tail(void);
   90 void    invltlb_handler(void);
   91 void    invlpg_handler(void);
   92 void    invlrng_handler(void);
   93 void    invlcache_handler(void);
   94 void    init_secondary(void);
   95 void    ipi_startup(int apic_id, int vector);
   96 void    ipi_all_but_self(u_int ipi);
   97 void    ipi_bitmap_handler(struct trapframe frame);
   98 void    ipi_cpu(int cpu, u_int ipi);
   99 int     ipi_nmi_handler(void);
  100 void    ipi_selected(cpuset_t cpus, u_int ipi);
  101 void    set_interrupt_apic_ids(void);
  102 void    smp_cache_flush(void);
  103 void    smp_masked_invlpg(cpuset_t mask, vm_offset_t addr, struct pmap *pmap);
  104 void    smp_masked_invlpg_range(cpuset_t mask, vm_offset_t startva,
  105             vm_offset_t endva, struct pmap *pmap);
  106 void    smp_masked_invltlb(cpuset_t mask, struct pmap *pmap);
  107 void    mem_range_AP_init(void);
  108 void    topo_probe(void);
  109 void    ipi_send_cpu(int cpu, u_int ipi);
  110 
  111 #endif

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