1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*-
* Copyright (c) 2011 NetApp, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _VMM_LAPIC_H_
#define _VMM_LAPIC_H_
struct vm;
struct vie;
boolean_t lapic_msr(u_int num);
int lapic_rdmsr(struct vm *vm, int cpu, u_int msr, uint64_t *rval);
int lapic_wrmsr(struct vm *vm, int cpu, u_int msr, uint64_t wval);
int lapic_mmio(struct vm *vm, int cpu, u_int offset, int rd, struct vie *);
int lapic_timer_tick(struct vm *vm, int cpu);
/*
* Returns a vector between 32 and 255 if an interrupt is pending in the
* IRR that can be delivered based on the current state of ISR and TPR.
*
* Note that the vector does not automatically transition to the ISR as a
* result of calling this function.
*
* Returns -1 if there is no eligible vector that can be delivered to the
* guest at this time.
*/
int lapic_pending_intr(struct vm *vm, int cpu);
/*
* Transition 'vector' from IRR to ISR. This function is called with the
* vector returned by 'lapic_pending_intr()' when the guest is able to
* accept this interrupt (i.e. RFLAGS.IF = 1 and no conditions exist that
* block interrupt delivery).
*/
void lapic_intr_accepted(struct vm *vm, int cpu, int vector);
/*
* Signals to the LAPIC that an interrupt at 'vector' needs to be generated
* to the 'cpu', the state is recorded in IRR.
*/
int lapic_set_intr(struct vm *vm, int cpu, int vector);
#endif
|