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 * ----------------------------------------------------------------------------
9 * $FreeBSD: src/sys/i386/include/smp.h,v 1.50.2.5 2001/02/13 22:32:45 tegge Exp $
10 * $DragonFly: src/sys/platform/pc32/include/smp.h,v 1.8 2003/11/03 02:08:33 dillon Exp $
14 #ifndef _MACHINE_SMP_H_
15 #define _MACHINE_SMP_H_
19 #if defined(SMP) && !defined(APIC_IO)
20 # error APIC_IO required for SMP, add "options APIC_IO" to your config file.
21 #endif /* SMP && !APIC_IO */
23 #if defined(SMP) || defined(APIC_IO)
28 * For sending values to POST displays.
29 * XXX FIXME: where does this really belong, isa.h/isa.c perhaps?
31 extern int current_postcode; /** XXX currently in mp_machdep.c */
32 #define POSTCODE(X) current_postcode = (X), \
33 outb(0x80, current_postcode)
34 #define POSTCODE_LO(X) current_postcode &= 0xf0, \
35 current_postcode |= ((X) & 0x0f), \
36 outb(0x80, current_postcode)
37 #define POSTCODE_HI(X) current_postcode &= 0x0f, \
38 current_postcode |= (((X) << 4) & 0xf0), \
39 outb(0x80, current_postcode)
44 /* global data in mpboot.s */
45 extern int bootMP_size;
47 /* functions in mpboot.s */
50 /* global data in apic_vector.s */
51 extern volatile u_int stopped_cpus;
52 extern volatile u_int started_cpus;
54 extern volatile u_int checkstate_probed_cpus;
55 extern void (*cpustop_restartfunc) (void);
57 /* functions in apic_ipl.s */
59 u_int io_apic_read (int, int);
60 void io_apic_write (int, int, u_int);
62 /* global data in mp_machdep.c */
63 extern int bsp_apic_ready;
65 extern int mp_nbusses;
67 extern int mp_picmode;
68 extern int boot_cpu_id;
69 extern vm_offset_t cpu_apic_address;
70 extern vm_offset_t io_apic_address[];
71 extern u_int32_t cpu_apic_versions[];
72 extern u_int32_t *io_apic_versions;
73 extern int cpu_num_to_apic_id[];
74 extern int io_num_to_apic_id[];
75 extern int apic_id_to_logical[];
76 #define APIC_INTMAPSIZE 24
77 struct apic_intmapinfo {
80 volatile void *apic_address;
83 extern struct apic_intmapinfo int_to_apicintpin[];
84 extern u_int all_cpus;
85 extern struct pcb stoppcbs[];
87 /* functions in mp_machdep.c */
88 u_int mp_bootaddress (u_int);
91 void mp_announce (void);
92 u_int isa_apic_mask (u_int);
93 int isa_apic_irq (int);
94 int pci_apic_irq (int, int, int);
95 int apic_irq (int, int);
96 int next_apic_irq (int);
97 int undirect_isa_irq (int);
98 int undirect_pci_irq (int);
99 int apic_bus_type (int);
100 int apic_src_bus_id (int, int);
101 int apic_src_bus_irq (int, int);
102 int apic_int_type (int, int);
103 int apic_trigger (int, int);
104 int apic_polarity (int, int);
105 void assign_apic_irq (int apic, int intpin, int irq);
106 void revoke_apic_irq (int irq);
107 void bsp_apic_configure (void);
108 void init_secondary (void);
109 int stop_cpus (u_int);
111 int restart_cpus (u_int);
113 void forward_statclock (int pscnt);
114 void forward_hardclock (int pscnt);
115 #endif /* BETTER_CLOCK */
116 void forward_signal (struct proc *);
117 void forward_roundrobin (void);
118 #ifdef APIC_INTR_REORDER
119 void set_lapic_isrloc (int, int);
120 #endif /* APIC_INTR_REORDER */
121 void smp_rendezvous_action (void);
122 void smp_rendezvous (void (*)(void *),
127 /* global data in mpapic.c */
128 extern volatile lapic_t lapic;
129 extern volatile ioapic_t **ioapic;
131 /* functions in mpapic.c */
132 void apic_dump (char*);
133 void apic_initialize (void);
134 void imen_dump (void);
135 int apic_ipi (int, int, int);
136 int selected_apic_ipi (u_int, int, int);
137 int io_apic_setup (int);
138 void io_apic_setup_intpin (int, int);
139 void io_apic_set_id (int, int);
140 int io_apic_get_id (int);
141 int ext_int_setup (int, int);
144 void clr_io_apic_mask24 (int, u_int32_t);
145 void set_io_apic_mask24 (int, u_int32_t);
148 void set_apic_timer (int);
149 int read_apic_timer (void);
151 void cpu_send_ipiq (int);
153 /* global data in init_smp.c */
154 extern int invltlb_ok;
155 extern int smp_active;
156 extern int smp_started;
157 extern volatile int smp_idle_loops;
160 #else /* !SMP && !APIC_IO */
162 #define smp_active 0 /* smp_active always 0 on UP machines */
167 #endif /* _MACHINE_SMP_H_ */