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 #if defined(SMP) 27 28 #ifndef LOCORE 29 30 /* 31 * For sending values to POST displays. 32 * XXX FIXME: where does this really belong, isa.h/isa.c perhaps? 33 */ 34 extern int current_postcode; /** XXX currently in mp_machdep.c */ 35 #define POSTCODE(X) current_postcode = (X), \ 36 outb(0x80, current_postcode) 37 #define POSTCODE_LO(X) current_postcode &= 0xf0, \ 38 current_postcode |= ((X) & 0x0f), \ 39 outb(0x80, current_postcode) 40 #define POSTCODE_HI(X) current_postcode &= 0x0f, \ 41 current_postcode |= (((X) << 4) & 0xf0), \ 42 outb(0x80, current_postcode) 43 44 45 #include <machine_base/apic/apicreg.h> 46 #include <machine/pcb.h> 47 48 /* global symbols in mpboot.S */ 49 extern char mptramp_start[]; 50 extern char mptramp_end[]; 51 extern u_int32_t mptramp_pagetables; 52 53 /* functions in mpboot.s */ 54 void bootMP (void); 55 56 /* global data in apic_vector.s */ 57 extern volatile cpumask_t stopped_cpus; 58 extern volatile cpumask_t started_cpus; 59 60 extern volatile u_int checkstate_probed_cpus; 61 extern void (*cpustop_restartfunc) (void); 62 63 extern struct pcb stoppcbs[]; 64 65 /* functions in mp_machdep.c */ 66 u_int mp_bootaddress (u_int); 67 void mp_start (void); 68 void mp_announce (void); 69 void init_secondary (void); 70 int stop_cpus (cpumask_t); 71 void ap_init (void); 72 int restart_cpus (cpumask_t); 73 void forward_signal (struct proc *); 74 75 #if defined(READY) 76 void clr_io_apic_mask24 (int, u_int32_t); 77 void set_io_apic_mask24 (int, u_int32_t); 78 #endif /* READY */ 79 80 void cpu_send_ipiq (int); 81 int cpu_send_ipiq_passive (int); 82 83 /* global data in init_smp.c */ 84 extern cpumask_t smp_active_mask; 85 86 #endif /* !LOCORE */ 87 #else /* !SMP */ 88 89 #define smp_active_mask 1 /* smp_active_mask always 1 on UP machines */ 90 91 #endif 92 93 #endif /* _KERNEL */ 94 #endif /* _MACHINE_SMP_H_ */ 95