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 #if defined(SMP) || defined(APIC_IO) 23 24 #ifndef LOCORE 25 26 /* 27 * For sending values to POST displays. 28 * XXX FIXME: where does this really belong, isa.h/isa.c perhaps? 29 */ 30 extern int current_postcode; /** XXX currently in mp_machdep.c */ 31 #define POSTCODE(X) current_postcode = (X), \ 32 outb(0x80, current_postcode) 33 #define POSTCODE_LO(X) current_postcode &= 0xf0, \ 34 current_postcode |= ((X) & 0x0f), \ 35 outb(0x80, current_postcode) 36 #define POSTCODE_HI(X) current_postcode &= 0x0f, \ 37 current_postcode |= (((X) << 4) & 0xf0), \ 38 outb(0x80, current_postcode) 39 40 41 #include <machine/apic.h> 42 43 /* global data in mpboot.s */ 44 extern int bootMP_size; 45 46 /* functions in mpboot.s */ 47 void bootMP __P((void)); 48 49 /* global data in mplock.s */ 50 extern u_int mp_lock; 51 extern u_int isr_lock; 52 #ifdef RECURSIVE_MPINTRLOCK 53 extern u_int mpintr_lock; 54 #endif /* RECURSIVE_MPINTRLOCK */ 55 56 /* functions in mplock.s */ 57 void get_mplock __P((void)); 58 void rel_mplock __P((void)); 59 int try_mplock __P((void)); 60 #ifdef RECURSIVE_MPINTRLOCK 61 void get_mpintrlock __P((void)); 62 void rel_mpintrlock __P((void)); 63 int try_mpintrlock __P((void)); 64 #endif /* RECURSIVE_MPINTRLOCK */ 65 66 /* global data in apic_vector.s */ 67 extern volatile u_int stopped_cpus; 68 extern volatile u_int started_cpus; 69 70 extern volatile u_int checkstate_probed_cpus; 71 extern volatile u_int checkstate_need_ast; 72 extern volatile u_int resched_cpus; 73 extern void (*cpustop_restartfunc) __P((void)); 74 75 /* functions in apic_ipl.s */ 76 void apic_eoi __P((void)); 77 u_int io_apic_read __P((int, int)); 78 void io_apic_write __P((int, int, u_int)); 79 80 /* global data in mp_machdep.c */ 81 extern int bsp_apic_ready; 82 extern int mp_ncpus; 83 extern int mp_naps; 84 extern int mp_nbusses; 85 extern int mp_napics; 86 extern int mp_picmode; 87 extern int boot_cpu_id; 88 extern vm_offset_t cpu_apic_address; 89 extern vm_offset_t io_apic_address[]; 90 extern u_int32_t cpu_apic_versions[]; 91 extern u_int32_t *io_apic_versions; 92 extern int cpu_num_to_apic_id[]; 93 extern int io_num_to_apic_id[]; 94 extern int apic_id_to_logical[]; 95 #define APIC_INTMAPSIZE 24 96 struct apic_intmapinfo { 97 int ioapic; 98 int int_pin; 99 volatile void *apic_address; 100 int redirindex; 101 }; 102 extern struct apic_intmapinfo int_to_apicintpin[]; 103 extern u_int all_cpus; 104 extern struct pcb stoppcbs[]; 105 106 /* functions in mp_machdep.c */ 107 u_int mp_bootaddress __P((u_int)); 108 int mp_probe __P((void)); 109 void mp_start __P((void)); 110 void mp_announce __P((void)); 111 u_int isa_apic_mask __P((u_int)); 112 int isa_apic_irq __P((int)); 113 int pci_apic_irq __P((int, int, int, void *)); 114 int apic_irq __P((int, int)); 115 int next_apic_irq __P((int)); 116 int undirect_isa_irq __P((int)); 117 int undirect_pci_irq __P((int)); 118 int apic_bus_type __P((int)); 119 int apic_src_bus_id __P((int, int)); 120 int apic_src_bus_irq __P((int, int)); 121 int apic_int_type __P((int, int)); 122 int apic_trigger __P((int, int)); 123 int apic_polarity __P((int, int)); 124 int mp_grab_cpu_hlt __P((void)); 125 void assign_apic_irq __P((int apic, int intpin, int irq)); 126 void revoke_apic_irq __P((int irq)); 127 void bsp_apic_configure __P((void)); 128 void init_secondary __P((void)); 129 void smp_invltlb __P((void)); 130 int stop_cpus __P((u_int)); 131 int restart_cpus __P((u_int)); 132 #ifdef BETTER_CLOCK 133 void forward_statclock __P((int pscnt)); 134 void forward_hardclock __P((int pscnt)); 135 #endif /* BETTER_CLOCK */ 136 void forward_signal __P((struct proc *)); 137 void forward_roundrobin __P((void)); 138 #ifdef APIC_INTR_REORDER 139 void set_lapic_isrloc __P((int, int)); 140 #endif /* APIC_INTR_REORDER */ 141 void smp_rendezvous_action __P((void)); 142 void smp_rendezvous __P((void (*)(void *), 143 void (*)(void *), 144 void (*)(void *), 145 void *arg)); 146 147 /* global data in mpapic.c */ 148 extern volatile lapic_t lapic; 149 extern volatile ioapic_t **ioapic; 150 151 /* functions in mpapic.c */ 152 void apic_dump __P((char*)); 153 void apic_initialize __P((void)); 154 void imen_dump __P((void)); 155 int apic_ipi __P((int, int, int)); 156 int selected_apic_ipi __P((u_int, int, int)); 157 int io_apic_setup __P((int)); 158 void io_apic_setup_intpin __P((int, int)); 159 void io_apic_set_id __P((int, int)); 160 int io_apic_get_id __P((int)); 161 int ext_int_setup __P((int, int)); 162 163 #if defined(READY) 164 void clr_io_apic_mask24 __P((int, u_int32_t)); 165 void set_io_apic_mask24 __P((int, u_int32_t)); 166 #endif /* READY */ 167 168 void set_apic_timer __P((int)); 169 int read_apic_timer __P((void)); 170 void u_sleep __P((int)); 171 172 /* global data in init_smp.c */ 173 extern int invltlb_ok; 174 extern int smp_active; 175 extern int smp_started; 176 extern volatile int smp_idle_loops; 177 178 #endif /* !LOCORE */ 179 #else /* !SMP && !APIC_IO */ 180 181 /* 182 * Create dummy MP lock empties 183 */ 184 185 static __inline void 186 get_mplock(void) 187 { 188 } 189 190 static __inline void 191 rel_mplock(void) 192 { 193 } 194 195 #endif 196 197 #endif /* _KERNEL */ 198 #endif /* _MACHINE_SMP_H_ */
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