x86_smp.h revision 69578 
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: head/sys/i386/include/smp.h 69578 2000-12-04 21:15:14Z peter $
10 *
11 */
12
13#ifndef _MACHINE_SMP_H_
14#define _MACHINE_SMP_H_
15
16#ifdef _KERNEL
17
18#if defined(SMP) && defined(I386_CPU) && !defined(COMPILING_LINT)
19#error SMP not supported with I386_CPU
20#endif
21#if defined(SMP) && !defined(APIC_IO)
22# error APIC_IO required for SMP, add "options APIC_IO" to your config file.
23#endif /* SMP && !APIC_IO */
24
25#if defined(SMP) || defined(APIC_IO)
26
27#ifndef LOCORE
28
29/*
30 * For sending values to POST displays.
31 * XXX FIXME: where does this really belong, isa.h/isa.c perhaps?
32 */
33extern int current_postcode;  /** XXX currently in mp_machdep.c */
34#define POSTCODE(X)	current_postcode = (X), \
35			outb(0x80, current_postcode)
36#define POSTCODE_LO(X)	current_postcode &= 0xf0, \
37			current_postcode |= ((X) & 0x0f), \
38			outb(0x80, current_postcode)
39#define POSTCODE_HI(X)	current_postcode &= 0x0f, \
40			current_postcode |= (((X) << 4) & 0xf0), \
41			outb(0x80, current_postcode)
42
43
44#include <machine/apic.h>
45
46/* global data in mpboot.s */
47extern int			bootMP_size;
48
49/* functions in mpboot.s */
50void	bootMP			__P((void));
51
52/* global data in apic_vector.s */
53extern volatile u_int		stopped_cpus;
54extern volatile u_int		started_cpus;
55
56extern volatile u_int		checkstate_probed_cpus;
57extern volatile u_int		checkstate_need_ast;
58extern volatile u_int		resched_cpus;
59extern void (*cpustop_restartfunc) __P((void));
60
61/* functions in apic_ipl.s */
62void	apic_eoi		__P((void));
63u_int	io_apic_read		__P((int, int));
64void	io_apic_write		__P((int, int, u_int));
65
66/* global data in mp_machdep.c */
67extern int			bsp_apic_ready;
68extern int			mp_ncpus;
69extern int			mp_naps;
70extern int			mp_nbusses;
71extern int			mp_napics;
72extern int			mp_picmode;
73extern int			boot_cpu_id;
74extern vm_offset_t		cpu_apic_address;
75extern vm_offset_t		io_apic_address[];
76extern u_int32_t		cpu_apic_versions[];
77extern u_int32_t		*io_apic_versions;
78extern int			cpu_num_to_apic_id[];
79extern int			io_num_to_apic_id[];
80extern int			apic_id_to_logical[];
81#define APIC_INTMAPSIZE 32
82struct apic_intmapinfo {
83  	int ioapic;
84	int int_pin;
85	volatile void *apic_address;
86	int redirindex;
87};
88extern struct apic_intmapinfo	int_to_apicintpin[];
89extern u_int			all_cpus;
90extern struct pcb		stoppcbs[];
91
92/* functions in mp_machdep.c */
93u_int	mp_bootaddress		__P((u_int));
94int	mp_probe		__P((void));
95void	mp_start		__P((void));
96void	mp_announce		__P((void));
97u_int	isa_apic_mask		__P((u_int));
98int	isa_apic_irq		__P((int));
99int	pci_apic_irq		__P((int, int, int));
100int	apic_irq		__P((int, int));
101int	next_apic_irq		__P((int));
102int	undirect_isa_irq	__P((int));
103int	undirect_pci_irq	__P((int));
104int	apic_bus_type		__P((int));
105int	apic_src_bus_id		__P((int, int));
106int	apic_src_bus_irq	__P((int, int));
107int	apic_int_type		__P((int, int));
108int	apic_trigger		__P((int, int));
109int	apic_polarity		__P((int, int));
110void	assign_apic_irq		__P((int apic, int intpin, int irq));
111void	revoke_apic_irq		__P((int irq));
112void	bsp_apic_configure	__P((void));
113void	init_secondary		__P((void));
114void	smp_invltlb		__P((void));
115int	stop_cpus		__P((u_int));
116int	restart_cpus		__P((u_int));
117#ifdef BETTER_CLOCK
118void	forward_statclock	__P((int pscnt));
119void	forward_hardclock	__P((int pscnt));
120#endif /* BETTER_CLOCK */
121void	forward_signal		__P((struct proc *));
122void	forward_roundrobin	__P((void));
123#ifdef	APIC_INTR_REORDER
124void	set_lapic_isrloc	__P((int, int));
125#endif /* APIC_INTR_REORDER */
126void	smp_rendezvous_action	__P((void));
127void	smp_rendezvous		__P((void (*)(void *),
128				     void (*)(void *),
129				     void (*)(void *),
130				     void *arg));
131
132/* global data in mpapic.c */
133extern volatile lapic_t		lapic;
134extern volatile ioapic_t	**ioapic;
135
136/* functions in mpapic.c */
137void	apic_dump		__P((char*));
138void	apic_initialize		__P((void));
139void	imen_dump		__P((void));
140int	apic_ipi		__P((int, int, int));
141int	selected_apic_ipi	__P((u_int, int, int));
142int	io_apic_setup		__P((int));
143void	io_apic_set_id		__P((int, int));
144int	io_apic_get_id		__P((int));
145int	ext_int_setup		__P((int, int));
146
147void	set_apic_timer		__P((int));
148int	read_apic_timer		__P((void));
149void	u_sleep			__P((int));
150
151/* global data in init_smp.c */
152extern int			invltlb_ok;
153extern int			smp_active;
154extern int			smp_started;
155extern volatile int		smp_idle_loops;
156
157#endif /* !LOCORE */
158#endif /* SMP && !APIC_IO */
159
160#endif /* _KERNEL */
161#endif /* _MACHINE_SMP_H_ */
162