smp.h revision 27663 
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 1.20 1997/07/23 20:42:16 fsmp 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#if defined(SMP) && !defined(NCPU)
23# define NCPU			2
24#endif /* SMP && NCPU */
25
26#if defined(SMP) || defined(APIC_IO)
27
28/*
29 * For sending values to POST displays.
30 * XXX FIXME: where does this really belong, isa.h/isa.c perhaps?
31 */
32extern int current_postcode;  /** XXX currently in mp_machdep.c */
33#define POSTCODE(X)	current_postcode = (X), \
34			outb(0x80, current_postcode)
35#define POSTCODE_LO(X)	current_postcode &= 0xf0, \
36			current_postcode |= ((X) & 0x0f), \
37			outb(0x80, current_postcode)
38#define POSTCODE_HI(X)	current_postcode &= 0x0f, \
39			current_postcode |= (((X) << 4) & 0xf0), \
40			outb(0x80, current_postcode)
41
42
43#include <machine/apic.h>
44
45/* global data in mpboot.s */
46extern int			bootMP_size;
47
48/* functions in mpboot.s */
49void	bootMP			__P((void));
50
51/* global data in mplock.s */
52extern u_int			mp_lock;
53
54/* functions in mplock.s */
55void	get_mplock		__P((void));
56void	rel_mplock		__P((void));
57void	try_mplock		__P((void));
58
59/* global data in apic_vector.s */
60extern u_int			ivectors[];
61extern volatile u_int		stopped_cpus;
62extern volatile u_int		started_cpus;
63
64/* global data in apic_ipl.s */
65extern u_int			vec[];
66extern u_int			Xintr8254;
67extern u_int			mask8254;
68extern struct simple_lock	imen_lock;
69
70/* functions in apic_ipl.s */
71void	vec8254			__P((void));
72void	INTREN			__P((u_int));
73void	INTRDIS			__P((u_int));
74void	apic_eoi		__P((void));
75u_int	io_apic_read		__P((int, int));
76void	io_apic_write		__P((int, int, u_int));
77
78/* functions in simplelock.s */
79#include <machine/param.h>
80void	s_lock_init		__P((struct simplelock *));
81void	s_lock			__P((__volatile struct simplelock *));
82int	s_lock_try		__P((__volatile struct simplelock *));
83void	s_unlock		__P((__volatile struct simplelock *));
84
85/* global data in mp_machdep.c */
86extern int			mp_ncpus;
87extern int			mp_naps;
88extern int			mp_nbusses;
89extern int			mp_napics;
90extern int			mp_picmode;
91extern int			boot_cpu_id;
92extern vm_offset_t		cpu_apic_address;
93extern vm_offset_t		io_apic_address[];
94extern u_int32_t		cpu_apic_versions[];
95extern u_int32_t		io_apic_versions[];
96extern int			cpu_num_to_apic_id[];
97extern int			io_num_to_apic_id[];
98extern int			apic_id_to_logical[];
99extern u_int			all_cpus;
100extern u_int			SMP_prvpt[];
101extern u_char			SMP_ioapic[];
102
103/* functions in mp_machdep.c */
104u_int	mp_bootaddress		__P((u_int));
105int	mp_probe		__P((void));
106void	mp_start		__P((void));
107void	mp_announce		__P((void));
108u_int	isa_apic_mask		__P((u_int));
109int	isa_apic_pin		__P((int));
110int	pci_apic_pin		__P((int, int, int));
111int	undirect_isa_irq	__P((int));
112int	undirect_pci_irq	__P((int));
113int	apic_bus_type		__P((int));
114int	apic_src_bus_id		__P((int, int));
115int	apic_src_bus_irq	__P((int, int));
116int	apic_int_type		__P((int, int));
117int	apic_trigger		__P((int, int));
118int	apic_polarity		__P((int, int));
119void	bsp_apic_configure	__P((void));
120void	init_secondary		__P((void));
121void	smp_invltlb		__P((void));
122int	stop_cpus		__P((u_int));
123int	restart_cpus		__P((u_int));
124
125/* global data in mpapic.c */
126extern volatile lapic_t		lapic;
127
128#if defined(MULTIPLE_IOAPICS)
129#error MULTIPLE_IOAPICSXXX
130#else
131extern volatile ioapic_t	*ioapic[];
132#endif /* MULTIPLE_IOAPICS */
133
134/* functions in mpapic.c */
135void	apic_dump		__P((char*));
136void	apic_initialize		__P((void));
137void	imen_dump		__P((void));
138int	apic_ipi		__P((int, int, int));
139int	selected_apic_ipi	__P((u_int, int, int));
140int	io_apic_setup		__P((int));
141int	ext_int_setup		__P((int, int));
142
143#if defined(READY)
144void	clr_io_apic_mask24	__P((int, u_int32_t));
145void	set_io_apic_mask24	__P((int, u_int32_t));
146#endif /* READY */
147
148void	set_apic_timer		__P((int));
149int	read_apic_timer		__P((void));
150void	u_sleep			__P((int));
151
152/* global data in init_smp.c */
153extern int			smp_active;
154extern int			invltlb_ok;
155
156/* 'private' global data in locore.s */
157extern volatile u_int		cpuid;
158extern volatile u_int		cpu_lockid;
159extern volatile u_int		other_cpus;
160
161#endif /* SMP || APIC_IO */
162#endif /* KERNEL */
163#endif /* _MACHINE_SMP_H_ */
164