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 1.42 1998/04/01 21:07:36 tegge 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 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 extern u_int all_cpus; 107 extern u_char SMP_ioapic[]; 108 extern struct pcb stoppcbs[]; 109 110 /* functions in mp_machdep.c */ 111 u_int mp_bootaddress __P((u_int)); 112 int mp_probe __P((void)); 113 void mp_start __P((void)); 114 void mp_announce __P((void)); 115 u_int isa_apic_mask __P((u_int)); 116 int isa_apic_pin __P((int)); 117 int pci_apic_pin __P((int, int, int)); 118 int next_apic_pin __P((int)); 119 int undirect_isa_irq __P((int)); 120 int undirect_pci_irq __P((int)); 121 int apic_bus_type __P((int)); 122 int apic_src_bus_id __P((int, int)); 123 int apic_src_bus_irq __P((int, int)); 124 int apic_int_type __P((int, int)); 125 int apic_trigger __P((int, int)); 126 int apic_polarity __P((int, int)); 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 */ 141 142 /* global data in mpapic.c */ 143 extern volatile lapic_t lapic; 144 145 #if defined(MULTIPLE_IOAPICS) 146 #error MULTIPLE_IOAPICSXXX 147 #else 148 extern volatile ioapic_t *ioapic[]; 149 #endif /* MULTIPLE_IOAPICS */ 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 int ext_int_setup __P((int, int)); 159 160 #if defined(READY) 161 void clr_io_apic_mask24 __P((int, u_int32_t)); 162 void set_io_apic_mask24 __P((int, u_int32_t)); 163 #endif /* READY */ 164 165 void set_apic_timer __P((int)); 166 int read_apic_timer __P((void)); 167 void u_sleep __P((int)); 168 169 /* global data in init_smp.c */ 170 extern int invltlb_ok; 171 extern int smp_active; 172 extern volatile int smp_idle_loops; 173 174 /* 'private' global data in locore.s */ 175 extern volatile u_int cpuid; 176 extern volatile u_int cpu_lockid; 177 extern int inside_intr; 178 extern volatile u_int other_cpus; 179 180 #endif /* !LOCORE */ 181 #endif /* SMP || APIC_IO */ 182 #endif /* KERNEL */ 183 #endif /* _MACHINE_SMP_H_ */ 184