sys/i386/include/smp.h

   1 /*
   2  * ----------------------------------------------------------------------------
   3  * "THE BEER-WARE LICENSE" (Revision 42):
   4  * <phk@FreeBSD.org> wrote this file.  As long as you retain this notice you
   5  * can do whatever you want with this stuff. If we meet some day, and you think
   6  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
   7  * ----------------------------------------------------------------------------
   8  *
   9  * $FreeBSD: src/sys/i386/include/smp.h,v 1.50.2.5 2001/02/13 22:32:45 tegge Exp $
  10  * $DragonFly: src/sys/i386/include/Attic/smp.h,v 1.4 2003/07/08 06:27:27 dillon Exp $
  11  *
  12  */
  13
  14 #ifndef _MACHINE_SMP_H_
  15 #define _MACHINE_SMP_H_
  16
  17 #ifdef _KERNEL
  18
  19 #if defined(SMP) && !defined(APIC_IO)
  20 # error APIC_IO required for SMP, add "options APIC_IO" to your config file.
  21 #endif /* SMP && !APIC_IO */
  22
  23 #if defined(SMP) || defined(APIC_IO)
  24
  25 #ifndef LOCORE
  26
  27 /*
  28  * For sending values to POST displays.
  29  * XXX FIXME: where does this really belong, isa.h/isa.c perhaps?
  30  */
  31 extern int current_postcode;  /** XXX currently in mp_machdep.c */
  32 #define POSTCODE(X)     current_postcode = (X), \
  33                         outb(0x80, current_postcode)
  34 #define POSTCODE_LO(X)  current_postcode &= 0xf0, \
  35                         current_postcode |= ((X) & 0x0f), \
  36                         outb(0x80, current_postcode)
  37 #define POSTCODE_HI(X)  current_postcode &= 0x0f, \
  38                         current_postcode |= (((X) << 4) & 0xf0), \
  39                         outb(0x80, current_postcode)
  40
  41
  42 #include <machine/apic.h>
  43
  44 /* global data in mpboot.s */
  45 extern int                      bootMP_size;
  46
  47 /* functions in mpboot.s */
  48 void    bootMP                  __P((void));
  49
  50 /* global data in apic_vector.s */
  51 extern volatile u_int           stopped_cpus;
  52 extern volatile u_int           started_cpus;
  53
  54 extern volatile u_int           checkstate_probed_cpus;
  55 extern volatile u_int           checkstate_need_ast;
  56 extern volatile u_int           resched_cpus;
  57 extern void (*cpustop_restartfunc) __P((void));
  58
  59 /* functions in apic_ipl.s */
  60 void    apic_eoi                __P((void));
  61 u_int   io_apic_read            __P((int, int));
  62 void    io_apic_write           __P((int, int, u_int));
  63
  64 /* global data in mp_machdep.c */
  65 extern int                      bsp_apic_ready;
  66 extern int                      mp_naps;
  67 extern int                      mp_nbusses;
  68 extern int                      mp_napics;
  69 extern int                      mp_picmode;
  70 extern int                      boot_cpu_id;
  71 extern vm_offset_t              cpu_apic_address;
  72 extern vm_offset_t              io_apic_address[];
  73 extern u_int32_t                cpu_apic_versions[];
  74 extern u_int32_t                *io_apic_versions;
  75 extern int                      cpu_num_to_apic_id[];
  76 extern int                      io_num_to_apic_id[];
  77 extern int                      apic_id_to_logical[];
  78 #define APIC_INTMAPSIZE 24
  79 struct apic_intmapinfo {
  80         int ioapic;
  81         int int_pin;
  82         volatile void *apic_address;
  83         int redirindex;
  84 };
  85 extern struct apic_intmapinfo   int_to_apicintpin[];
  86 extern u_int                    all_cpus;
  87 extern struct pcb               stoppcbs[];
  88
  89 /* functions in mp_machdep.c */
  90 u_int   mp_bootaddress          __P((u_int));
  91 int     mp_probe                __P((void));
  92 void    mp_start                __P((void));
  93 void    mp_announce             __P((void));
  94 u_int   isa_apic_mask           __P((u_int));
  95 int     isa_apic_irq            __P((int));
  96 int     pci_apic_irq            __P((int, int, int));
  97 int     apic_irq                __P((int, int));
  98 int     next_apic_irq           __P((int));
  99 int     undirect_isa_irq        __P((int));
 100 int     undirect_pci_irq        __P((int));
 101 int     apic_bus_type           __P((int));
 102 int     apic_src_bus_id         __P((int, int));
 103 int     apic_src_bus_irq        __P((int, int));
 104 int     apic_int_type           __P((int, int));
 105 int     apic_trigger            __P((int, int));
 106 int     apic_polarity           __P((int, int));
 107 void    assign_apic_irq         __P((int apic, int intpin, int irq));
 108 void    revoke_apic_irq         __P((int irq));
 109 void    bsp_apic_configure      __P((void));
 110 void    init_secondary          __P((void));
 111 int     stop_cpus               __P((u_int));
 112 void    ap_init                 __P((void));
 113 int     restart_cpus            __P((u_int));
 114 #ifdef BETTER_CLOCK
 115 void    forward_statclock       __P((int pscnt));
 116 void    forward_hardclock       __P((int pscnt));
 117 #endif /* BETTER_CLOCK */
 118 void    forward_signal          __P((struct proc *));
 119 void    forward_roundrobin      __P((void));
 120 #ifdef  APIC_INTR_REORDER
 121 void    set_lapic_isrloc        __P((int, int));
 122 #endif /* APIC_INTR_REORDER */
 123 void    smp_rendezvous_action   __P((void));
 124 void    smp_rendezvous          __P((void (*)(void *),
 125                                      void (*)(void *),
 126                                      void (*)(void *),
 127                                      void *arg));
 128
 129 /* global data in mpapic.c */
 130 extern volatile lapic_t         lapic;
 131 extern volatile ioapic_t        **ioapic;
 132
 133 /* functions in mpapic.c */
 134 void    apic_dump               __P((char*));
 135 void    apic_initialize         __P((void));
 136 void    imen_dump               __P((void));
 137 int     apic_ipi                __P((int, int, int));
 138 int     selected_apic_ipi       __P((u_int, int, int));
 139 int     io_apic_setup           __P((int));
 140 void    io_apic_setup_intpin    __P((int, int));
 141 void    io_apic_set_id          __P((int, int));
 142 int     io_apic_get_id          __P((int));
 143 int     ext_int_setup           __P((int, int));
 144
 145 #if defined(READY)
 146 void    clr_io_apic_mask24      __P((int, u_int32_t));
 147 void    set_io_apic_mask24      __P((int, u_int32_t));
 148 #endif /* READY */
 149
 150 void    set_apic_timer          __P((int));
 151 int     read_apic_timer         __P((void));
 152 void    u_sleep                 __P((int));
 153 void    cpu_send_ipiq           __P((int));
 154
 155 /* global data in init_smp.c */
 156 extern int                      invltlb_ok;
 157 extern int                      smp_active;
 158 extern int                      smp_started;
 159 extern volatile int             smp_idle_loops;
 160
 161 #endif /* !LOCORE */
 162 #else   /* !SMP && !APIC_IO */
 163
 164 #endif
 165
 166 #endif /* _KERNEL */
 167 #endif /* _MACHINE_SMP_H_ */