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 * $Id: smp.h,v 1.29 1997/08/24 20:33:24 fsmp Exp $ 10 * 11 */ 12 13 #ifndef _MACHINE_SMP_H_ 14 #define _MACHINE_SMP_H_ 15 16 #ifdef KERNEL 17 18 #if defined(SMP) && !defined(APIC_IO) 19 # error APIC_IO required for SMP, add "options APIC_IO" to your config file. 20 #endif /* SMP && !APIC_IO */ 21 22 /* Number of CPUs. */ 23 #if defined(SMP) && !defined(NCPU) 24 # define NCPU 2 25 #endif /* SMP && NCPU */ 26 27 /* Number of IO APICs. */ 28 #if defined(APIC_IO) && !defined(NAPIC) 29 # define NAPIC 1 30 #endif /* SMP && NAPIC */ 31 32 33 #if defined(SMP) || defined(APIC_IO) 34 35 #ifndef LOCORE 36 37 /* 38 * For sending values to POST displays. 39 * XXX FIXME: where does this really belong, isa.h/isa.c perhaps? 40 */ 41 extern int current_postcode; /** XXX currently in mp_machdep.c */ 42 #define POSTCODE(X) current_postcode = (X), \ 43 outb(0x80, current_postcode) 44 #define POSTCODE_LO(X) current_postcode &= 0xf0, \ 45 current_postcode |= ((X) & 0x0f), \ 46 outb(0x80, current_postcode) 47 #define POSTCODE_HI(X) current_postcode &= 0x0f, \ 48 current_postcode |= (((X) << 4) & 0xf0), \ 49 outb(0x80, current_postcode) 50 51 52 #include <machine/apic.h> 53 54 /* global data in mpboot.s */ 55 extern int bootMP_size; 56 57 /* functions in mpboot.s */ 58 void bootMP __P((void)); 59 60 /* global data in mplock.s */ 61 extern u_int mp_lock; 62 extern u_int isr_lock; 63 64 /* functions in mplock.s */ 65 void get_mplock __P((void)); 66 void rel_mplock __P((void)); 67 void try_mplock __P((void)); 68 69 /* global data in apic_vector.s */ 70 extern u_int ivectors[]; 71 extern volatile u_int stopped_cpus; 72 extern volatile u_int started_cpus; 73 74 /* global data in apic_ipl.s */ 75 extern u_int vec[]; 76 extern u_int Xintr8254; 77 extern u_int mask8254; 78 79 /* functions in apic_ipl.s */ 80 void vec8254 __P((void)); 81 void INTREN __P((u_int)); 82 void INTRDIS __P((u_int)); 83 void apic_eoi __P((void)); 84 u_int io_apic_read __P((int, int)); 85 void io_apic_write __P((int, int, u_int)); 86 87 /* global data in mp_machdep.c */ 88 extern int bsp_apic_ready; 89 extern int mp_ncpus; 90 extern int mp_naps; 91 extern int mp_nbusses; 92 extern int mp_napics; 93 extern int mp_picmode; 94 extern int boot_cpu_id; 95 extern vm_offset_t cpu_apic_address; 96 extern vm_offset_t io_apic_address[]; 97 extern u_int32_t cpu_apic_versions[]; 98 extern u_int32_t io_apic_versions[]; 99 extern int cpu_num_to_apic_id[]; 100 extern int io_num_to_apic_id[]; 101 extern int apic_id_to_logical[]; 102 extern u_int all_cpus; 103 extern u_char SMP_ioapic[]; 104 105 /* functions in mp_machdep.c */ 106 u_int mp_bootaddress __P((u_int)); 107 int mp_probe __P((void)); 108 void mp_start __P((void)); 109 void mp_announce __P((void)); 110 u_int isa_apic_mask __P((u_int)); 111 int isa_apic_pin __P((int)); 112 int pci_apic_pin __P((int, int, int)); 113 int undirect_isa_irq __P((int)); 114 int undirect_pci_irq __P((int)); 115 int apic_bus_type __P((int)); 116 int apic_src_bus_id __P((int, int)); 117 int apic_src_bus_irq __P((int, int)); 118 int apic_int_type __P((int, int)); 119 int apic_trigger __P((int, int)); 120 int apic_polarity __P((int, int)); 121 void bsp_apic_configure __P((void)); 122 void init_secondary __P((void)); 123 void smp_invltlb __P((void)); 124 int stop_cpus __P((u_int)); 125 int restart_cpus __P((u_int)); 126 127 /* global data in mpapic.c */ 128 extern volatile lapic_t lapic; 129 130 #if defined(MULTIPLE_IOAPICS) 131 #error MULTIPLE_IOAPICSXXX 132 #else 133 extern volatile ioapic_t *ioapic[]; 134 #endif /* MULTIPLE_IOAPICS */ 135 136 /* functions in mpapic.c */ 137 void apic_dump __P((char*)); 138 void apic_initialize __P((void)); 139 void imen_dump __P((void)); 140 int apic_ipi __P((int, int, int)); 141 int selected_apic_ipi __P((u_int, int, int)); 142 int io_apic_setup __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)); 153 154 /* global data in init_smp.c */ 155 extern int invltlb_ok; 156 extern int smp_active; 157 extern volatile int smp_idle_loops; 158 159 /* 'private' global data in locore.s */ 160 extern volatile u_int cpuid; 161 extern volatile u_int cpu_lockid; 162 extern volatile u_int other_cpus; 163 164 #endif /* !LOCORE */ 165 #endif /* SMP || APIC_IO */ 166 #endif /* KERNEL */ 167 #endif /* _MACHINE_SMP_H_ */ 168