smp.h revision 25362 
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 1.3 1997/04/30 19:04:26 fsmp Exp $
10 *
11 */
12
13#ifndef _MACHINE_SMP_H_
14#define _MACHINE_SMP_H_
15
16#ifdef KERNEL
17
18#include "opt_smp.h"
19
20#if defined(SMP) && !defined(NCPU)
21# define NCPU			2
22#endif /* SMP && NCPU */
23
24#if defined(SMP) || defined(APIC_IO)
25
26/* global data in mpboot.s */
27extern int			bootMP_size;
28
29/* functions in mpboot.s */
30void	bootMP			__P((void));
31
32/* global data in mplock.s */
33extern u_int			mp_lock;
34
35/* functions in mplock.s */
36void	get_mplock		__P((void));
37void	rel_mplock		__P((void));
38void	try_mplock		__P((void));
39
40/* global data in mp_machdep.c */
41extern struct proc*		SMPcurproc[NCPU];
42extern struct pcb*		SMPcurpcb[NCPU];
43extern struct timeval		SMPruntime[NCPU];
44extern int			mp_ncpus;
45extern int			mp_naps;
46extern int			mp_nbusses;
47extern int			mp_napics;
48extern int			mp_picmode;
49extern int			mpenabled;
50extern int			boot_cpu_id;
51extern vm_offset_t		cpu_apic_address;
52extern vm_offset_t		io_apic_address[];
53extern u_int32_t		cpu_apic_versions[];
54extern u_int32_t		io_apic_versions[];
55extern int			cpu_num_to_apic_id[];
56extern int			io_num_to_apic_id[];
57extern int			apic_id_to_logical[];
58
59/* functions in mp_machdep.c */
60u_int	mp_bootaddress		__P((u_int));
61void	mp_start		__P((void));
62void	mp_announce		__P((void));
63int	get_isa_apic_irq	__P((int));
64int	get_eisa_apic_irq	__P((int));
65int	get_pci_apic_irq	__P((int, int, int));
66int	undirect_pci_irq	__P((int));
67int	apic_bus_type		__P((int));
68int	apic_src_bus_id		__P((int, int));
69int	apic_src_bus_irq	__P((int, int));
70int	apic_int_type		__P((int, int));
71int	apic_trigger		__P((int, int));
72int	apic_polarity		__P((int, int));
73void	configure_local_apic	__P((void));
74void	init_secondary		__P((void));
75void	smp_invltlb		__P((void));
76
77/* global data in mpapic.c */
78extern volatile u_int*		apic_base;
79
80#if defined(MULTIPLE_IOAPICS)
81#error MULTIPLE_IOAPICSXXX
82#else
83extern volatile u_int*		io_apic_base;
84#endif /* MULTIPLE_IOAPICS */
85
86/* functions in mpapic.c */
87void	apic_initialize		__P((int));
88int	apic_ipi		__P((int, int, int));
89int	selected_apic_ipi	__P((u_int, int, int));
90int	io_apic_setup		__P((int));
91int	ext_int_setup		__P((int, int));
92void	write_io_apic_mask24	__P((int, u_int32_t));
93
94#if defined(READY)
95void	clr_io_apic_mask24	__P((int, u_int32_t));
96void	set_io_apic_mask24	__P((int, u_int32_t));
97#endif /* READY */
98
99void	set_apic_timer		__P((int));
100int	read_apic_timer		__P((void));
101void	u_sleep			__P((int));
102
103/* global data in init_smp.c */
104extern int			smp_active;
105extern int			invltlb_ok;
106
107/* in pmap.c FIXME: belongs in pmap.h??? */
108void	pmap_bootstrap_apics	__P((void));
109void	pmap_bootstrap2		__P((void));
110
111#if 0
112/* chicken and egg problem... */
113static __inline unsigned
114cpunumber(void)
115{
116	return (unsigned)ID_TO_CPU((apic_base[APIC_ID] & APIC_ID_MASK) >> 24);
117}
118#else
119/*
120 * we 'borrow' this info from apic.h
121 * this will go away soon...
122 */
123static __inline unsigned
124cpunumber(void)
125{
126	return (unsigned)(apic_id_to_logical[(apic_base[8] & 0x0f000000) >> 24]);
127}
128#endif /* 0 */
129
130#endif /* SMP || APIC_IO */
131#endif /* KERNEL */
132#endif /* _MACHINE_SMP_H_ */
133