smp.h revision 28808 
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 1.29 1997/08/24 20:33:24 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;
62extern u_int			isr_lock;
63
64/* functions in mplock.s */
65void	get_mplock		__P((void));
66void	rel_mplock		__P((void));
67void	try_mplock		__P((void));
68
69/* global data in apic_vector.s */
70extern u_int			ivectors[];
71extern volatile u_int		stopped_cpus;
72extern volatile u_int		started_cpus;
73
74/* global data in apic_ipl.s */
75extern u_int			vec[];
76extern u_int			Xintr8254;
77extern u_int			mask8254;
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/* global data in mp_machdep.c */
88extern int			bsp_apic_ready;
89extern int			mp_ncpus;
90extern int			mp_naps;
91extern int			mp_nbusses;
92extern int			mp_napics;
93extern int			mp_picmode;
94extern int			boot_cpu_id;
95extern vm_offset_t		cpu_apic_address;
96extern vm_offset_t		io_apic_address[];
97extern u_int32_t		cpu_apic_versions[];
98extern u_int32_t		io_apic_versions[];
99extern int			cpu_num_to_apic_id[];
100extern int			io_num_to_apic_id[];
101extern int			apic_id_to_logical[];
102extern u_int			all_cpus;
103extern u_char			SMP_ioapic[];
104
105/* functions in mp_machdep.c */
106u_int	mp_bootaddress		__P((u_int));
107int	mp_probe		__P((void));
108void	mp_start		__P((void));
109void	mp_announce		__P((void));
110u_int	isa_apic_mask		__P((u_int));
111int	isa_apic_pin		__P((int));
112int	pci_apic_pin		__P((int, int, int));
113int	undirect_isa_irq	__P((int));
114int	undirect_pci_irq	__P((int));
115int	apic_bus_type		__P((int));
116int	apic_src_bus_id		__P((int, int));
117int	apic_src_bus_irq	__P((int, int));
118int	apic_int_type		__P((int, int));
119int	apic_trigger		__P((int, int));
120int	apic_polarity		__P((int, int));
121void	bsp_apic_configure	__P((void));
122void	init_secondary		__P((void));
123void	smp_invltlb		__P((void));
124int	stop_cpus		__P((u_int));
125int	restart_cpus		__P((u_int));
126
127/* global data in mpapic.c */
128extern volatile lapic_t		lapic;
129
130#if defined(MULTIPLE_IOAPICS)
131#error MULTIPLE_IOAPICSXXX
132#else
133extern volatile ioapic_t	*ioapic[];
134#endif /* MULTIPLE_IOAPICS */
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));
143int	ext_int_setup		__P((int, int));
144
145#if defined(READY)
146void	clr_io_apic_mask24	__P((int, u_int32_t));
147void	set_io_apic_mask24	__P((int, u_int32_t));
148#endif /* READY */
149
150void	set_apic_timer		__P((int));
151int	read_apic_timer		__P((void));
152void	u_sleep			__P((int));
153
154/* global data in init_smp.c */
155extern int			invltlb_ok;
156extern int			smp_active;
157extern volatile int		smp_idle_loops;
158
159/* 'private' global data in locore.s */
160extern volatile u_int		cpuid;
161extern volatile u_int		cpu_lockid;
162extern volatile u_int		other_cpus;
163
164#endif /* !LOCORE */
165#endif /* SMP || APIC_IO */
166#endif /* KERNEL */
167#endif /* _MACHINE_SMP_H_ */
168