smp.h revision 34021 
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 1.37 1998/03/03 20:55:23 tegge 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));
70int	try_mplock		__P((void));
71#ifdef RECURSIVE_MPINTRLOCK
72void	get_mpintrlock		__P((void));
73void	rel_mpintrlock		__P((void));
74int	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
82extern unsigned int		checkstate_probed_cpus;
83extern unsigned int		checkstate_need_ast;
84
85/* global data in apic_ipl.s */
86extern u_int			vec[];
87extern u_int			Xintr8254;
88extern u_int			mask8254;
89
90/* functions in apic_ipl.s */
91void	vec8254			__P((void));
92void	apic_eoi		__P((void));
93u_int	io_apic_read		__P((int, int));
94void	io_apic_write		__P((int, int, u_int));
95
96/* global data in mp_machdep.c */
97extern int			bsp_apic_ready;
98extern int			mp_ncpus;
99extern int			mp_naps;
100extern int			mp_nbusses;
101extern int			mp_napics;
102extern int			mp_picmode;
103extern int			boot_cpu_id;
104extern vm_offset_t		cpu_apic_address;
105extern vm_offset_t		io_apic_address[];
106extern u_int32_t		cpu_apic_versions[];
107extern u_int32_t		io_apic_versions[];
108extern int			cpu_num_to_apic_id[];
109extern int			io_num_to_apic_id[];
110extern int			apic_id_to_logical[];
111extern u_int			all_cpus;
112extern u_char			SMP_ioapic[];
113
114/* functions in mp_machdep.c */
115u_int	mp_bootaddress		__P((u_int));
116int	mp_probe		__P((void));
117void	mp_start		__P((void));
118void	mp_announce		__P((void));
119u_int	isa_apic_mask		__P((u_int));
120int	isa_apic_pin		__P((int));
121int	pci_apic_pin		__P((int, int, int));
122int	undirect_isa_irq	__P((int));
123int	undirect_pci_irq	__P((int));
124int	apic_bus_type		__P((int));
125int	apic_src_bus_id		__P((int, int));
126int	apic_src_bus_irq	__P((int, int));
127int	apic_int_type		__P((int, int));
128int	apic_trigger		__P((int, int));
129int	apic_polarity		__P((int, int));
130void	bsp_apic_configure	__P((void));
131void	init_secondary		__P((void));
132void	smp_invltlb		__P((void));
133int	stop_cpus		__P((u_int));
134int	restart_cpus		__P((u_int));
135#ifdef BETTER_CLOCK
136void	forward_statclock	__P((int pscnt));
137void	forward_hardclock	__P((int pscnt));
138#endif /* BETTER_CLOCK */
139void	forward_signal		__P((struct proc *));
140#ifdef	APIC_INTR_REORDER
141void	set_lapic_isrloc	__P((int, int));
142#endif /* APIC_INTR_REORDER */
143
144/* global data in mpapic.c */
145extern volatile lapic_t		lapic;
146
147#if defined(MULTIPLE_IOAPICS)
148#error MULTIPLE_IOAPICSXXX
149#else
150extern volatile ioapic_t	*ioapic[];
151#endif /* MULTIPLE_IOAPICS */
152
153/* functions in mpapic.c */
154void	apic_dump		__P((char*));
155void	apic_initialize		__P((void));
156void	imen_dump		__P((void));
157int	apic_ipi		__P((int, int, int));
158int	selected_apic_ipi	__P((u_int, int, int));
159int	io_apic_setup		__P((int));
160int	ext_int_setup		__P((int, int));
161
162#if defined(READY)
163void	clr_io_apic_mask24	__P((int, u_int32_t));
164void	set_io_apic_mask24	__P((int, u_int32_t));
165#endif /* READY */
166
167void	set_apic_timer		__P((int));
168int	read_apic_timer		__P((void));
169void	u_sleep			__P((int));
170
171/* global data in init_smp.c */
172extern int			invltlb_ok;
173extern int			smp_active;
174extern volatile int		smp_idle_loops;
175
176/* 'private' global data in locore.s */
177extern volatile u_int		cpuid;
178extern volatile u_int		cpu_lockid;
179extern int			inside_intr;
180extern volatile u_int		other_cpus;
181
182#endif /* !LOCORE */
183#endif /* SMP || APIC_IO */
184#endif /* KERNEL */
185#endif /* _MACHINE_SMP_H_ */
186