xref: /freebsd/sys/i386/include/smp.h (revision 7f3dea244c40159a41ab22da77a434d7c5b5e85a)
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 1.45 1999/04/28 01:04:07 luoqi 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  */
41 extern 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 */
55 extern int			bootMP_size;
56 
57 /* functions in mpboot.s */
58 void	bootMP			__P((void));
59 
60 /* global data in mplock.s */
61 extern u_int			mp_lock;
62 extern u_int			isr_lock;
63 #ifdef RECURSIVE_MPINTRLOCK
64 extern u_int			mpintr_lock;
65 #endif /*  RECURSIVE_MPINTRLOCK */
66 
67 /* functions in mplock.s */
68 void	get_mplock		__P((void));
69 void	rel_mplock		__P((void));
70 int		try_mplock		__P((void));
71 #ifdef RECURSIVE_MPINTRLOCK
72 void	get_mpintrlock		__P((void));
73 void	rel_mpintrlock		__P((void));
74 int		try_mpintrlock		__P((void));
75 #endif /*  RECURSIVE_MPINTRLOCK */
76 
77 /* global data in apic_vector.s */
78 extern volatile u_int		stopped_cpus;
79 extern volatile u_int		started_cpus;
80 
81 extern volatile u_int		checkstate_probed_cpus;
82 extern volatile u_int		checkstate_need_ast;
83 extern volatile u_int		resched_cpus;
84 extern void (*cpustop_restartfunc) __P((void));
85 
86 /* functions in apic_ipl.s */
87 void	apic_eoi		__P((void));
88 u_int	io_apic_read		__P((int, int));
89 void	io_apic_write		__P((int, int, u_int));
90 
91 /* global data in mp_machdep.c */
92 extern int			bsp_apic_ready;
93 extern int			mp_ncpus;
94 extern int			mp_naps;
95 extern int			mp_nbusses;
96 extern int			mp_napics;
97 extern int			mp_picmode;
98 extern int			boot_cpu_id;
99 extern vm_offset_t		cpu_apic_address;
100 extern vm_offset_t		io_apic_address[];
101 extern u_int32_t		cpu_apic_versions[];
102 extern u_int32_t		io_apic_versions[];
103 extern int			cpu_num_to_apic_id[];
104 extern int			io_num_to_apic_id[];
105 extern int			apic_id_to_logical[];
106 #define APIC_INTMAPSIZE 24
107 struct apic_intmapinfo {
108   	int ioapic;
109 	int int_pin;
110 	volatile void *apic_address;
111 	int redirindex;
112 };
113 extern struct apic_intmapinfo	int_to_apicintpin[];
114 extern u_int			all_cpus;
115 extern struct pcb		stoppcbs[];
116 
117 /* functions in mp_machdep.c */
118 u_int	mp_bootaddress		__P((u_int));
119 int	mp_probe		__P((void));
120 void	mp_start		__P((void));
121 void	mp_announce		__P((void));
122 u_int	isa_apic_mask		__P((u_int));
123 int	isa_apic_irq		__P((int));
124 int	pci_apic_irq		__P((int, int, int));
125 int	apic_irq		__P((int, int));
126 int	next_apic_irq		__P((int));
127 int	undirect_isa_irq	__P((int));
128 int	undirect_pci_irq	__P((int));
129 int	apic_bus_type		__P((int));
130 int	apic_src_bus_id		__P((int, int));
131 int	apic_src_bus_irq	__P((int, int));
132 int	apic_int_type		__P((int, int));
133 int	apic_trigger		__P((int, int));
134 int	apic_polarity		__P((int, int));
135 void	bsp_apic_configure	__P((void));
136 void	init_secondary		__P((void));
137 void	smp_invltlb		__P((void));
138 int	stop_cpus		__P((u_int));
139 int	restart_cpus		__P((u_int));
140 #ifdef BETTER_CLOCK
141 void	forward_statclock	__P((int pscnt));
142 void	forward_hardclock	__P((int pscnt));
143 #endif /* BETTER_CLOCK */
144 void	forward_signal		__P((struct proc *));
145 void	forward_roundrobin	__P((void));
146 #ifdef	APIC_INTR_REORDER
147 void	set_lapic_isrloc	__P((int, int));
148 #endif /* APIC_INTR_REORDER */
149 void	smp_rendezvous_action	__P((void));
150 void	smp_rendezvous		__P((void (*)(void *),
151 				     void (*)(void *),
152 				     void (*)(void *),
153 				     void *arg));
154 
155 /* global data in mpapic.c */
156 extern volatile lapic_t		lapic;
157 extern volatile ioapic_t	*ioapic[];
158 
159 /* functions in mpapic.c */
160 void	apic_dump		__P((char*));
161 void	apic_initialize		__P((void));
162 void	imen_dump		__P((void));
163 int	apic_ipi		__P((int, int, int));
164 int	selected_apic_ipi	__P((u_int, int, int));
165 int	io_apic_setup		__P((int));
166 int	ext_int_setup		__P((int, int));
167 
168 #if defined(READY)
169 void	clr_io_apic_mask24	__P((int, u_int32_t));
170 void	set_io_apic_mask24	__P((int, u_int32_t));
171 #endif /* READY */
172 
173 void	set_apic_timer		__P((int));
174 int	read_apic_timer		__P((void));
175 void	u_sleep			__P((int));
176 
177 /* global data in init_smp.c */
178 extern int			invltlb_ok;
179 extern int			smp_active;
180 extern volatile int		smp_idle_loops;
181 
182 #endif /* !LOCORE */
183 #endif /* SMP || APIC_IO */
184 #endif /* KERNEL */
185 #endif /* _MACHINE_SMP_H_ */
186