xref: /illumos-gate/usr/src/uts/intel/io/vmm/vmm_lapic.h (revision 32640292339b07090f10ce34d455f98711077343)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2011 NetApp, Inc.
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 /*
29  * This file and its contents are supplied under the terms of the
30  * Common Development and Distribution License ("CDDL"), version 1.0.
31  * You may only use this file in accordance with the terms of version
32  * 1.0 of the CDDL.
33  *
34  * A full copy of the text of the CDDL should have accompanied this
35  * source.  A copy of the CDDL is also available via the Internet at
36  * http://www.illumos.org/license/CDDL.
37  *
38  * Copyright 2014 Pluribus Networks Inc.
39  */
40 
41 #ifndef _VMM_LAPIC_H_
42 #define	_VMM_LAPIC_H_
43 
44 struct vm;
45 
46 bool lapic_msr(uint_t num);
47 int lapic_rdmsr(struct vm *vm, int cpu, uint_t msr, uint64_t *rval);
48 int lapic_wrmsr(struct vm *vm, int cpu, uint_t msr, uint64_t wval);
49 
50 int lapic_mmio_read(struct vm *vm, int cpu, uint64_t gpa, uint64_t *rval,
51     int size);
52 int lapic_mmio_write(struct vm *vm, int cpu, uint64_t gpa, uint64_t wval,
53     int size);
54 
55 /*
56  * Signals to the LAPIC that an interrupt at 'vector' needs to be generated
57  * to the 'cpu', the state is recorded in IRR.
58  */
59 int lapic_set_intr(struct vm *vm, int cpu, int vector, bool trig);
60 
61 #define	LAPIC_TRIG_LEVEL	true
62 #define	LAPIC_TRIG_EDGE		false
63 static __inline int
lapic_intr_level(struct vm * vm,int cpu,int vector)64 lapic_intr_level(struct vm *vm, int cpu, int vector)
65 {
66 
67 	return (lapic_set_intr(vm, cpu, vector, LAPIC_TRIG_LEVEL));
68 }
69 
70 static __inline int
lapic_intr_edge(struct vm * vm,int cpu,int vector)71 lapic_intr_edge(struct vm *vm, int cpu, int vector)
72 {
73 
74 	return (lapic_set_intr(vm, cpu, vector, LAPIC_TRIG_EDGE));
75 }
76 
77 /*
78  * Triggers the LAPIC local interrupt (LVT) 'vector' on 'cpu'.  'cpu' can
79  * be set to -1 to trigger the interrupt on all CPUs.
80  */
81 int lapic_set_local_intr(struct vm *vm, int cpu, int vector);
82 
83 int lapic_intr_msi(struct vm *vm, uint64_t addr, uint64_t msg);
84 
85 #endif
86