smp.h revision 28352 
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 1.25 1997/08/15 02:34:32 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/* 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 */
41extern 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 */
55extern int			bootMP_size;
56
57/* functions in mpboot.s */
58void	bootMP			__P((void));
59
60/* global data in mplock.s */
61extern u_int			mp_lock;
62
63/* functions in mplock.s */
64void	get_mplock		__P((void));
65void	rel_mplock		__P((void));
66void	try_mplock		__P((void));
67
68/* global data in apic_vector.s */
69extern u_int			ivectors[];
70extern volatile u_int		stopped_cpus;
71extern volatile u_int		started_cpus;
72
73/* global data in apic_ipl.s */
74extern u_int			vec[];
75extern u_int			Xintr8254;
76extern u_int			mask8254;
77extern volatile struct simplelock	imen_lock;
78
79/* functions in apic_ipl.s */
80void	vec8254			__P((void));
81void	INTREN			__P((u_int));
82void	INTRDIS			__P((u_int));
83void	apic_eoi		__P((void));
84u_int	io_apic_read		__P((int, int));
85void	io_apic_write		__P((int, int, u_int));
86
87/* functions in simplelock.s */
88#include <machine/param.h>
89void	s_lock_init		__P((struct simplelock *));
90void	s_lock			__P((struct simplelock *));
91int	s_lock_try		__P((struct simplelock *));
92void	s_unlock		__P((struct simplelock *));
93
94/* global data in mp_machdep.c */
95extern int			mp_ncpus;
96extern int			mp_naps;
97extern int			mp_nbusses;
98extern int			mp_napics;
99extern int			mp_picmode;
100extern int			boot_cpu_id;
101extern vm_offset_t		cpu_apic_address;
102extern vm_offset_t		io_apic_address[];
103extern u_int32_t		cpu_apic_versions[];
104extern u_int32_t		io_apic_versions[];
105extern int			cpu_num_to_apic_id[];
106extern int			io_num_to_apic_id[];
107extern int			apic_id_to_logical[];
108extern u_int			all_cpus;
109extern u_int			SMP_prvpt[];
110extern u_char			SMP_ioapic[];
111
112/* functions in mp_machdep.c */
113u_int	mp_bootaddress		__P((u_int));
114int	mp_probe		__P((void));
115void	mp_start		__P((void));
116void	mp_announce		__P((void));
117u_int	isa_apic_mask		__P((u_int));
118int	isa_apic_pin		__P((int));
119int	pci_apic_pin		__P((int, int, int));
120int	undirect_isa_irq	__P((int));
121int	undirect_pci_irq	__P((int));
122int	apic_bus_type		__P((int));
123int	apic_src_bus_id		__P((int, int));
124int	apic_src_bus_irq	__P((int, int));
125int	apic_int_type		__P((int, int));
126int	apic_trigger		__P((int, int));
127int	apic_polarity		__P((int, int));
128void	bsp_apic_configure	__P((void));
129void	init_secondary		__P((void));
130void	smp_invltlb		__P((void));
131int	stop_cpus		__P((u_int));
132int	restart_cpus		__P((u_int));
133
134/* global data in mpapic.c */
135extern volatile lapic_t		lapic;
136
137#if defined(MULTIPLE_IOAPICS)
138#error MULTIPLE_IOAPICSXXX
139#else
140extern volatile ioapic_t	*ioapic[];
141#endif /* MULTIPLE_IOAPICS */
142
143/* functions in mpapic.c */
144void	apic_dump		__P((char*));
145void	apic_initialize		__P((void));
146void	imen_dump		__P((void));
147int	apic_ipi		__P((int, int, int));
148int	selected_apic_ipi	__P((u_int, int, int));
149int	io_apic_setup		__P((int));
150int	ext_int_setup		__P((int, int));
151
152#if defined(READY)
153void	clr_io_apic_mask24	__P((int, u_int32_t));
154void	set_io_apic_mask24	__P((int, u_int32_t));
155#endif /* READY */
156
157void	set_apic_timer		__P((int));
158int	read_apic_timer		__P((void));
159void	u_sleep			__P((int));
160
161/* global data in init_smp.c */
162extern int			invltlb_ok;
163extern int			smp_active;
164extern volatile int		smp_idle_loops;
165
166/* 'private' global data in locore.s */
167extern volatile u_int		cpuid;
168extern volatile u_int		cpu_lockid;
169extern volatile u_int		other_cpus;
170
171#endif /* !LOCORE */
172#endif /* SMP || APIC_IO */
173#endif /* KERNEL */
174#endif /* _MACHINE_SMP_H_ */
175