Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/i386/include/smp.h
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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 * $FreeBSD$ 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 int try_mplock __P((void)); 71 #ifdef RECURSIVE_MPINTRLOCK 72 void get_mpintrlock __P((void)); 73 void rel_mpintrlock __P((void)); 74 int try_mpintrlock __P((void)); 75 #endif /* RECURSIVE_MPINTRLOCK */ 76 77 /* global data in apic_vector.s */ 78 extern volatile u_int stopped_cpus; 79 extern volatile u_int started_cpus; 80 81 extern volatile u_int checkstate_probed_cpus; 82 extern volatile u_int checkstate_need_ast; 83 extern volatile u_int resched_cpus; 84 extern void (*cpustop_restartfunc) __P((void)); 85 86 /* functions in apic_ipl.s */ 87 void apic_eoi __P((void)); 88 u_int io_apic_read __P((int, int)); 89 void io_apic_write __P((int, int, u_int)); 90 91 /* global data in mp_machdep.c */ 92 extern int bsp_apic_ready; 93 extern int mp_ncpus; 94 extern int mp_naps; 95 extern int mp_nbusses; 96 extern int mp_napics; 97 extern int mp_picmode; 98 extern int boot_cpu_id; 99 extern vm_offset_t cpu_apic_address; 100 extern vm_offset_t io_apic_address[]; 101 extern u_int32_t cpu_apic_versions[]; 102 extern u_int32_t io_apic_versions[]; 103 extern int cpu_num_to_apic_id[]; 104 extern int io_num_to_apic_id[]; 105 extern int apic_id_to_logical[]; 106 #define APIC_INTMAPSIZE 24 107 struct apic_intmapinfo { 108 int ioapic; 109 int int_pin; 110 volatile void *apic_address; 111 int redirindex; 112 }; 113 extern struct apic_intmapinfo int_to_apicintpin[]; 114 extern u_int all_cpus; 115 extern u_char SMP_ioapic[]; 116 extern struct pcb stoppcbs[]; 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_irq __P((int)); 125 int pci_apic_irq __P((int, int, int)); 126 int apic_irq __P((int, int)); 127 int next_apic_irq __P((int)); 128 int undirect_isa_irq __P((int)); 129 int undirect_pci_irq __P((int)); 130 int apic_bus_type __P((int)); 131 int apic_src_bus_id __P((int, int)); 132 int apic_src_bus_irq __P((int, int)); 133 int apic_int_type __P((int, int)); 134 int apic_trigger __P((int, int)); 135 int apic_polarity __P((int, int)); 136 void bsp_apic_configure __P((void)); 137 void init_secondary __P((void)); 138 void smp_invltlb __P((void)); 139 int stop_cpus __P((u_int)); 140 int restart_cpus __P((u_int)); 141 #ifdef BETTER_CLOCK 142 void forward_statclock __P((int pscnt)); 143 void forward_hardclock __P((int pscnt)); 144 #endif /* BETTER_CLOCK */ 145 void forward_signal __P((struct proc *)); 146 void forward_roundrobin __P((void)); 147 #ifdef APIC_INTR_REORDER 148 void set_lapic_isrloc __P((int, int)); 149 #endif /* APIC_INTR_REORDER */ 150 void smp_rendezvous_action __P((void)); 151 void smp_rendezvous __P((void (*)(void *), 152 void (*)(void *), 153 void (*)(void *), 154 void *arg)); 155 156 /* global data in mpapic.c */ 157 extern volatile lapic_t lapic; 158 extern volatile ioapic_t *ioapic[]; 159 160 /* functions in mpapic.c */ 161 void apic_dump __P((char*)); 162 void apic_initialize __P((void)); 163 void imen_dump __P((void)); 164 int apic_ipi __P((int, int, int)); 165 int selected_apic_ipi __P((u_int, int, int)); 166 int io_apic_setup __P((int)); 167 int ext_int_setup __P((int, int)); 168 169 #if defined(READY) 170 void clr_io_apic_mask24 __P((int, u_int32_t)); 171 void set_io_apic_mask24 __P((int, u_int32_t)); 172 #endif /* READY */ 173 174 void set_apic_timer __P((int)); 175 int read_apic_timer __P((void)); 176 void u_sleep __P((int)); 177 178 /* global data in init_smp.c */ 179 extern int invltlb_ok; 180 extern int smp_active; 181 extern volatile int smp_idle_loops; 182 183 /* 'private' global data in locore.s */ 184 extern volatile u_int cpuid; 185 extern volatile u_int cpu_lockid; 186 extern int inside_intr; 187 extern volatile u_int other_cpus; 188 189 #endif /* !LOCORE */ 190 #endif /* SMP || APIC_IO */ 191 #endif /* KERNEL */ 192 #endif /* _MACHINE_SMP_H_ */
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