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 int x2apic_enable;
60 extern void (*lapic_eoi)(void);
61 extern int (*apic_ipi)(int, int, int);
62 extern void (*single_apic_ipi)(int, int, int);
63
64 void apic_dump(char*);
65 void lapic_init(boolean_t);
66 void lapic_set_cpuid(int, int);
67 int lapic_config(void);
68 void lapic_enumerator_register(struct lapic_enumerator *);
69 void set_apic_timer(int);
70 int read_apic_timer(void);
71 void u_sleep(int);
72
73 void lapic_map(vm_paddr_t);
74 int lapic_unused_apic_id(int);
75 void lapic_fixup_noioapic(void);
76 void lapic_seticr_sync(uint32_t, uint32_t);
77 void lapic_x2apic_enter(boolean_t);
78
79 #ifndef _MACHINE_SMP_H_
80 #include <machine/smp.h>
81 #endif
82
83 #ifndef _SYS_CPUMASK_H_
84 #include <sys/cpumask.h>
85 #endif
86
87 void selected_apic_ipi(cpumask_t, int, int);
88
89 /*
90 * Send an IPI INTerrupt containing 'vector' to all CPUs EXCEPT myself
91 */
92 static __inline int
all_but_self_ipi(int vector)93 all_but_self_ipi(int vector)
94 {
95 if (CPUMASK_ISUP(smp_active_mask))
96 return 0;
97 return apic_ipi(APIC_DEST_ALLESELF, vector, APIC_DELMODE_FIXED);
98 }
99
100 #define LAPIC_MEM_READ(field) (lapic_mem->field)
101 #define LAPIC_MEM_WRITE(field, val) \
102 do { \
103 lapic_mem->field = (val); \
104 } while (0)
105
106 #define LAPIC_MSR_READ(msr) rdmsr((msr))
107 #define LAPIC_MSR_WRITE(msr, val) wrmsr((msr), (val))
108
109 #define LAPIC_READ(field) \
110 (x2apic_enable ? (uint32_t)LAPIC_MSR_READ(LAPIC2MSR(field)) \
111 : LAPIC_MEM_READ(field))
112
113 #define LAPIC_WRITE(field, val) \
114 do { \
115 if (x2apic_enable) \
116 LAPIC_MSR_WRITE(LAPIC2MSR(field), (val)); \
117 else \
118 LAPIC_MEM_WRITE(field, (val)); \
119 } while (0)
120
121 #define LAPIC_READID \
122 (x2apic_enable ? (uint32_t)LAPIC_MSR_READ(MSR_X2APIC_ID) \
123 : APIC_ID(LAPIC_MEM_READ(id)))
124
125 #endif /* _ARCH_APIC_LAPIC_H_ */
126