smp.h revision 31639 
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 1.32 1997/09/07 22:01:53 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#ifdef RECURSIVE_MPINTRLOCK
64extern u_int			mpintr_lock;
65#endif /*  RECURSIVE_MPINTRLOCK */
66
67/* functions in mplock.s */
68void	get_mplock		__P((void));
69void	rel_mplock		__P((void));
70void	try_mplock		__P((void));
71#ifdef RECURSIVE_MPINTRLOCK
72void	get_mpintrlock		__P((void));
73void	rel_mpintrlock		__P((void));
74void	try_mpintrlock		__P((void));
75#endif /*  RECURSIVE_MPINTRLOCK */
76
77/* global data in apic_vector.s */
78extern u_int			ivectors[];
79extern volatile u_int		stopped_cpus;
80extern volatile u_int		started_cpus;
81
82#ifdef BETTER_CLOCK
83void	forward_statclock	__P((int pscnt));
84void	forward_hardclock	__P((int pscnt));
85extern unsigned int		checkstate_probed_cpus;
86extern unsigned int		checkstate_need_ast;
87#endif
88
89/* global data in apic_ipl.s */
90extern u_int			vec[];
91extern u_int			Xintr8254;
92extern u_int			mask8254;
93
94/* functions in apic_ipl.s */
95void	vec8254			__P((void));
96void	INTREN			__P((u_int));
97void	INTRDIS			__P((u_int));
98void	apic_eoi		__P((void));
99u_int	io_apic_read		__P((int, int));
100void	io_apic_write		__P((int, int, u_int));
101
102/* global data in mp_machdep.c */
103extern int			bsp_apic_ready;
104extern int			mp_ncpus;
105extern int			mp_naps;
106extern int			mp_nbusses;
107extern int			mp_napics;
108extern int			mp_picmode;
109extern int			boot_cpu_id;
110extern vm_offset_t		cpu_apic_address;
111extern vm_offset_t		io_apic_address[];
112extern u_int32_t		cpu_apic_versions[];
113extern u_int32_t		io_apic_versions[];
114extern int			cpu_num_to_apic_id[];
115extern int			io_num_to_apic_id[];
116extern int			apic_id_to_logical[];
117extern u_int			all_cpus;
118extern u_char			SMP_ioapic[];
119
120/* functions in mp_machdep.c */
121u_int	mp_bootaddress		__P((u_int));
122int	mp_probe		__P((void));
123void	mp_start		__P((void));
124void	mp_announce		__P((void));
125u_int	isa_apic_mask		__P((u_int));
126int	isa_apic_pin		__P((int));
127int	pci_apic_pin		__P((int, int, int));
128int	undirect_isa_irq	__P((int));
129int	undirect_pci_irq	__P((int));
130int	apic_bus_type		__P((int));
131int	apic_src_bus_id		__P((int, int));
132int	apic_src_bus_irq	__P((int, int));
133int	apic_int_type		__P((int, int));
134int	apic_trigger		__P((int, int));
135int	apic_polarity		__P((int, int));
136void	bsp_apic_configure	__P((void));
137void	init_secondary		__P((void));
138void	smp_invltlb		__P((void));
139int	stop_cpus		__P((u_int));
140int	restart_cpus		__P((u_int));
141
142/* global data in mpapic.c */
143extern volatile lapic_t		lapic;
144
145#if defined(MULTIPLE_IOAPICS)
146#error MULTIPLE_IOAPICSXXX
147#else
148extern volatile ioapic_t	*ioapic[];
149#endif /* MULTIPLE_IOAPICS */
150
151/* functions in mpapic.c */
152void	apic_dump		__P((char*));
153void	apic_initialize		__P((void));
154void	imen_dump		__P((void));
155int	apic_ipi		__P((int, int, int));
156int	selected_apic_ipi	__P((u_int, int, int));
157int	io_apic_setup		__P((int));
158int	ext_int_setup		__P((int, int));
159
160#if defined(READY)
161void	clr_io_apic_mask24	__P((int, u_int32_t));
162void	set_io_apic_mask24	__P((int, u_int32_t));
163#endif /* READY */
164
165void	set_apic_timer		__P((int));
166int	read_apic_timer		__P((void));
167void	u_sleep			__P((int));
168
169/* global data in init_smp.c */
170extern int			invltlb_ok;
171extern int			smp_active;
172extern volatile int		smp_idle_loops;
173
174/* 'private' global data in locore.s */
175extern volatile u_int		cpuid;
176extern volatile u_int		cpu_lockid;
177extern int			inside_intr;
178extern volatile u_int		other_cpus;
179
180#endif /* !LOCORE */
181#endif /* SMP || APIC_IO */
182#endif /* KERNEL */
183#endif /* _MACHINE_SMP_H_ */
184