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 1.33 1997/12/08 22:56:44 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 #ifdef RECURSIVE_MPINTRLOCK 64 extern u_int mpintr_lock; 65 #endif /* RECURSIVE_MPINTRLOCK */ 66 67 /* functions in mplock.s */ 68 void get_mplock __P((void)); 69 void rel_mplock __P((void)); 70 void try_mplock __P((void)); 71 #ifdef RECURSIVE_MPINTRLOCK 72 void get_mpintrlock __P((void)); 73 void rel_mpintrlock __P((void)); 74 void try_mpintrlock __P((void)); 75 #endif /* RECURSIVE_MPINTRLOCK */ 76 77 /* global data in apic_vector.s */ 78 extern u_int ivectors[]; 79 extern volatile u_int stopped_cpus; 80 extern volatile u_int started_cpus; 81 82 #ifdef BETTER_CLOCK 83 void forward_statclock __P((int pscnt)); 84 void forward_hardclock __P((int pscnt)); 85 extern unsigned int checkstate_probed_cpus; 86 extern unsigned int checkstate_need_ast; 87 #endif 88 89 /* global data in apic_ipl.s */ 90 extern u_int vec[]; 91 extern u_int Xintr8254; 92 extern u_int mask8254; 93 94 /* functions in apic_ipl.s */ 95 void vec8254 __P((void)); 96 void apic_eoi __P((void)); 97 u_int io_apic_read __P((int, int)); 98 void io_apic_write __P((int, int, u_int)); 99 100 /* global data in mp_machdep.c */ 101 extern int bsp_apic_ready; 102 extern int mp_ncpus; 103 extern int mp_naps; 104 extern int mp_nbusses; 105 extern int mp_napics; 106 extern int mp_picmode; 107 extern int boot_cpu_id; 108 extern vm_offset_t cpu_apic_address; 109 extern vm_offset_t io_apic_address[]; 110 extern u_int32_t cpu_apic_versions[]; 111 extern u_int32_t io_apic_versions[]; 112 extern int cpu_num_to_apic_id[]; 113 extern int io_num_to_apic_id[]; 114 extern int apic_id_to_logical[]; 115 extern u_int all_cpus; 116 extern u_char SMP_ioapic[]; 117 118 /* functions in mp_machdep.c */ 119 u_int mp_bootaddress __P((u_int)); 120 int mp_probe __P((void)); 121 void mp_start __P((void)); 122 void mp_announce __P((void)); 123 u_int isa_apic_mask __P((u_int)); 124 int isa_apic_pin __P((int)); 125 int pci_apic_pin __P((int, int, int)); 126 int undirect_isa_irq __P((int)); 127 int undirect_pci_irq __P((int)); 128 int apic_bus_type __P((int)); 129 int apic_src_bus_id __P((int, int)); 130 int apic_src_bus_irq __P((int, int)); 131 int apic_int_type __P((int, int)); 132 int apic_trigger __P((int, int)); 133 int apic_polarity __P((int, int)); 134 void bsp_apic_configure __P((void)); 135 void init_secondary __P((void)); 136 void smp_invltlb __P((void)); 137 int stop_cpus __P((u_int)); 138 int restart_cpus __P((u_int)); 139 140 /* global data in mpapic.c */ 141 extern volatile lapic_t lapic; 142 143 #if defined(MULTIPLE_IOAPICS) 144 #error MULTIPLE_IOAPICSXXX 145 #else 146 extern volatile ioapic_t *ioapic[]; 147 #endif /* MULTIPLE_IOAPICS */ 148 149 /* functions in mpapic.c */ 150 void apic_dump __P((char*)); 151 void apic_initialize __P((void)); 152 void imen_dump __P((void)); 153 int apic_ipi __P((int, int, int)); 154 int selected_apic_ipi __P((u_int, int, int)); 155 int io_apic_setup __P((int)); 156 int ext_int_setup __P((int, int)); 157 158 #if defined(READY) 159 void clr_io_apic_mask24 __P((int, u_int32_t)); 160 void set_io_apic_mask24 __P((int, u_int32_t)); 161 #endif /* READY */ 162 163 void set_apic_timer __P((int)); 164 int read_apic_timer __P((void)); 165 void u_sleep __P((int)); 166 167 /* global data in init_smp.c */ 168 extern int invltlb_ok; 169 extern int smp_active; 170 extern volatile int smp_idle_loops; 171 172 /* 'private' global data in locore.s */ 173 extern volatile u_int cpuid; 174 extern volatile u_int cpu_lockid; 175 extern int inside_intr; 176 extern volatile u_int other_cpus; 177 178 #endif /* !LOCORE */ 179 #endif /* SMP || APIC_IO */ 180 #endif /* KERNEL */ 181 #endif /* _MACHINE_SMP_H_ */ 182