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/platform/pc32/include/smp.h,v 1.20 2006/11/07 06:43:24 dillon Exp $ 11 * 12 */ 13 14 #ifndef _MACHINE_SMP_H_ 15 #define _MACHINE_SMP_H_ 16 17 #ifdef _KERNEL 18 19 #ifndef LOCORE 20 21 /* XXX wrong header */ 22 void initializecpu(void); 23 24 #endif /* LOCORE */ 25 26 /* 27 * Size of APIC ID list. 28 * Also used a MAX size of various other arrays. 29 */ 30 #define NAPICID 256 31 32 #if defined(SMP) 33 34 #ifndef LOCORE 35 36 /* 37 * For sending values to POST displays. 38 * XXX FIXME: where does this really belong, isa.h/isa.c perhaps? 39 */ 40 extern int current_postcode; /** XXX currently in mp_machdep.c */ 41 #define POSTCODE(X) current_postcode = (X), \ 42 outb(0x80, current_postcode) 43 #define POSTCODE_LO(X) current_postcode &= 0xf0, \ 44 current_postcode |= ((X) & 0x0f), \ 45 outb(0x80, current_postcode) 46 #define POSTCODE_HI(X) current_postcode &= 0x0f, \ 47 current_postcode |= (((X) << 4) & 0xf0), \ 48 outb(0x80, current_postcode) 49 50 51 #include <machine_base/apic/apicreg.h> 52 #include <machine/pcb.h> 53 54 /* global symbols in mpboot.S */ 55 extern char mptramp_start[]; 56 extern char mptramp_end[]; 57 extern u_int32_t mptramp_pagetables; 58 59 /* functions in mpboot.s */ 60 void bootMP (void); 61 62 /* global data in apic_vector.s */ 63 extern volatile cpumask_t stopped_cpus; 64 extern volatile cpumask_t started_cpus; 65 66 extern volatile u_int checkstate_probed_cpus; 67 extern void (*cpustop_restartfunc) (void); 68 69 #define APIC_INTMAPSIZE 192 70 /* 71 * NOTE: 72 * - Keep size of apic_intmapinfo power of 2 73 * - Update IOAPIC_IM_SZSHIFT after changing apic_intmapinfo size 74 */ 75 struct apic_intmapinfo { 76 int ioapic; 77 int int_pin; 78 volatile void *apic_address; 79 int redirindex; 80 uint32_t flags; /* IOAPIC_IM_FLAG_ */ 81 uint32_t pad[2]; 82 }; 83 #define IOAPIC_IM_SZSHIFT 5 84 85 #define IOAPIC_IM_FLAG_LEVEL 0x1 /* default to edge trigger */ 86 #define IOAPIC_IM_FLAG_MASKED 0x2 87 88 extern struct apic_intmapinfo int_to_apicintpin[]; 89 extern struct pcb stoppcbs[]; 90 91 /* functions in mp_machdep.c */ 92 u_int mp_bootaddress (u_int); 93 void mp_start (void); 94 void mp_announce (void); 95 void init_secondary (void); 96 int stop_cpus (cpumask_t); 97 void ap_init (void); 98 int restart_cpus (cpumask_t); 99 void forward_signal (struct proc *); 100 101 #if defined(READY) 102 void clr_io_apic_mask24 (int, u_int32_t); 103 void set_io_apic_mask24 (int, u_int32_t); 104 #endif /* READY */ 105 106 void cpu_send_ipiq (int); 107 int cpu_send_ipiq_passive (int); 108 109 /* global data in init_smp.c */ 110 extern cpumask_t smp_active_mask; 111 112 #endif /* !LOCORE */ 113 #else /* !SMP */ 114 115 #define smp_active_mask 1 /* smp_active_mask always 1 on UP machines */ 116 117 #endif 118 119 #endif /* _KERNEL */ 120 #endif /* _MACHINE_SMP_H_ */ 121