xref: /dflybsd-src/sys/platform/pc64/apic/lapic.h (revision efbd013239d66d591bfbc71ed58d36141e70b76c)
1 /*
2  * Copyright (c) 1996, by Steve Passe
3  * Copyright (c) 2008 The DragonFly Project.
4  * All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. The name of the developer may NOT be used to endorse or promote products
12  *    derived from this software without specific prior written permission.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $FreeBSD: src/sys/i386/include/mpapic.h,v 1.14.2.2 2000/09/30 02:49:34 ps Exp $
27  */
28 
29 #ifndef _ARCH_APIC_LAPIC_H_
30 #define _ARCH_APIC_LAPIC_H_
31 
32 #include <machine_base/apic/apicreg.h>
33 
34 /*
35  * APIC ID <-> CPU ID mapping macros
36  */
37 #define CPUID_TO_APICID(cpu_id)		(cpu_id_to_apic_id[(cpu_id)])
38 #define APICID_TO_CPUID(apic_id)	(apic_id_to_cpu_id[(apic_id)])
39 
40 #ifndef _SYS_QUEUE_H_
41 #include <sys/queue.h>
42 #endif
43 
44 struct lapic_enumerator {
45 	int	lapic_prio;
46 	TAILQ_ENTRY(lapic_enumerator) lapic_link;
47 	int	(*lapic_probe)(struct lapic_enumerator *);
48 	int	(*lapic_enumerate)(struct lapic_enumerator *);
49 };
50 
51 #define LAPIC_ENUM_PRIO_MPTABLE		20
52 #define LAPIC_ENUM_PRIO_MADT		40
53 
54 extern volatile lapic_t		*lapic_mem;
55 extern int			cpu_id_to_apic_id[];
56 extern int			apic_id_to_cpu_id[];
57 extern int			lapic_enable;
58 extern int			lapic_usable;
59 extern void			(*lapic_eoi)(void);
60 extern int			(*apic_ipi)(int, int, int);
61 extern void			(*single_apic_ipi)(int, int, int);
62 
63 void	apic_dump(char*);
64 void	lapic_init(boolean_t);
65 void	lapic_set_cpuid(int, int);
66 int	lapic_config(void);
67 void	lapic_enumerator_register(struct lapic_enumerator *);
68 void	set_apic_timer(int);
69 int	read_apic_timer(void);
70 void	u_sleep(int);
71 
72 void	lapic_map(vm_paddr_t);
73 int	lapic_unused_apic_id(int);
74 void	lapic_fixup_noioapic(void);
75 void	lapic_seticr_sync(uint32_t, uint32_t);
76 
77 #ifndef _MACHINE_SMP_H_
78 #include <machine/smp.h>
79 #endif
80 
81 void	selected_apic_ipi(cpumask_t, int, int);
82 
83 /*
84  * Send an IPI INTerrupt containing 'vector' to all CPUs EXCEPT myself
85  */
86 #ifndef _CPU_CPUMASK_H_
87 #include <machine/cpumask.h>
88 #endif
89 
90 static __inline int
91 all_but_self_ipi(int vector)
92 {
93 	if (CPUMASK_ISUP(smp_active_mask))
94 		return 0;
95 	return apic_ipi(APIC_DEST_ALLESELF, vector, APIC_DELMODE_FIXED);
96 }
97 
98 #define LAPIC_MEM_READ(field)		(lapic_mem->field)
99 #define LAPIC_MEM_WRITE(field, val)	\
100 do {					\
101 	lapic_mem->field = (val);	\
102 } while (0)
103 
104 /* TODO: x2apic */
105 #define LAPIC_READ(field)		LAPIC_MEM_READ(field)
106 #define LAPIC_WRITE(field, val)		LAPIC_MEM_WRITE(field, (val))
107 
108 /* TODO: x2apic */
109 #define LAPIC_READID			APIC_ID(LAPIC_MEM_READ(id))
110 
111 #endif /* _ARCH_APIC_LAPIC_H_ */
112