1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 29 */ 30 31 #ifndef _VMM_LAPIC_H_ 32 #define _VMM_LAPIC_H_ 33 34 struct vm; 35 36 bool lapic_msr(u_int num); 37 int lapic_rdmsr(struct vm *vm, int cpu, u_int msr, uint64_t *rval, 38 bool *retu); 39 int lapic_wrmsr(struct vm *vm, int cpu, u_int msr, uint64_t wval, 40 bool *retu); 41 42 int lapic_mmio_read(void *vm, int cpu, uint64_t gpa, 43 uint64_t *rval, int size, void *arg); 44 int lapic_mmio_write(void *vm, int cpu, uint64_t gpa, 45 uint64_t wval, int size, void *arg); 46 47 /* 48 * Signals to the LAPIC that an interrupt at 'vector' needs to be generated 49 * to the 'cpu', the state is recorded in IRR. 50 */ 51 int lapic_set_intr(struct vm *vm, int cpu, int vector, bool trig); 52 53 #define LAPIC_TRIG_LEVEL true 54 #define LAPIC_TRIG_EDGE false 55 static __inline int 56 lapic_intr_level(struct vm *vm, int cpu, int vector) 57 { 58 59 return (lapic_set_intr(vm, cpu, vector, LAPIC_TRIG_LEVEL)); 60 } 61 62 static __inline int 63 lapic_intr_edge(struct vm *vm, int cpu, int vector) 64 { 65 66 return (lapic_set_intr(vm, cpu, vector, LAPIC_TRIG_EDGE)); 67 } 68 69 /* 70 * Triggers the LAPIC local interrupt (LVT) 'vector' on 'cpu'. 'cpu' can 71 * be set to -1 to trigger the interrupt on all CPUs. 72 */ 73 int lapic_set_local_intr(struct vm *vm, int cpu, int vector); 74 75 int lapic_intr_msi(struct vm *vm, uint64_t addr, uint64_t msg); 76 77 #endif 78