vlapic.h revision 272461
1/*- 2 * Copyright (c) 2011 NetApp, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``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 NETAPP, INC 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: releng/10.1/sys/amd64/vmm/io/vlapic.h 270073 2014-08-17 01:16:40Z grehan $ 27 */ 28 29#ifndef _VLAPIC_H_ 30#define _VLAPIC_H_ 31 32struct vm; 33enum x2apic_state; 34 35int vlapic_write(struct vlapic *vlapic, int mmio_access, uint64_t offset, 36 uint64_t data, bool *retu); 37int vlapic_read(struct vlapic *vlapic, int mmio_access, uint64_t offset, 38 uint64_t *data, bool *retu); 39 40/* 41 * Returns 0 if there is no eligible vector that can be delivered to the 42 * guest at this time and non-zero otherwise. 43 * 44 * If an eligible vector number is found and 'vecptr' is not NULL then it will 45 * be stored in the location pointed to by 'vecptr'. 46 * 47 * Note that the vector does not automatically transition to the ISR as a 48 * result of calling this function. 49 */ 50int vlapic_pending_intr(struct vlapic *vlapic, int *vecptr); 51 52/* 53 * Transition 'vector' from IRR to ISR. This function is called with the 54 * vector returned by 'vlapic_pending_intr()' when the guest is able to 55 * accept this interrupt (i.e. RFLAGS.IF = 1 and no conditions exist that 56 * block interrupt delivery). 57 */ 58void vlapic_intr_accepted(struct vlapic *vlapic, int vector); 59 60/* 61 * Returns 1 if the vcpu needs to be notified of the interrupt and 0 otherwise. 62 */ 63int vlapic_set_intr_ready(struct vlapic *vlapic, int vector, bool level); 64 65/* 66 * Post an interrupt to the vcpu running on 'hostcpu'. This will use a 67 * hardware assist if available (e.g. Posted Interrupt) or fall back to 68 * sending an 'ipinum' to interrupt the 'hostcpu'. 69 */ 70void vlapic_post_intr(struct vlapic *vlapic, int hostcpu, int ipinum); 71 72void vlapic_set_error(struct vlapic *vlapic, uint32_t mask); 73void vlapic_fire_cmci(struct vlapic *vlapic); 74int vlapic_trigger_lvt(struct vlapic *vlapic, int vector); 75 76uint64_t vlapic_get_apicbase(struct vlapic *vlapic); 77int vlapic_set_apicbase(struct vlapic *vlapic, uint64_t val); 78void vlapic_set_x2apic_state(struct vm *vm, int vcpuid, enum x2apic_state s); 79bool vlapic_enabled(struct vlapic *vlapic); 80 81void vlapic_deliver_intr(struct vm *vm, bool level, uint32_t dest, bool phys, 82 int delmode, int vec); 83 84/* Reset the trigger-mode bits for all vectors to be edge-triggered */ 85void vlapic_reset_tmr(struct vlapic *vlapic); 86 87/* 88 * Set the trigger-mode bit associated with 'vector' to level-triggered if 89 * the (dest,phys,delmode) tuple resolves to an interrupt being delivered to 90 * this 'vlapic'. 91 */ 92void vlapic_set_tmr_level(struct vlapic *vlapic, uint32_t dest, bool phys, 93 int delmode, int vector); 94 95void vlapic_set_cr8(struct vlapic *vlapic, uint64_t val); 96uint64_t vlapic_get_cr8(struct vlapic *vlapic); 97 98/* APIC write handlers */ 99void vlapic_id_write_handler(struct vlapic *vlapic); 100void vlapic_ldr_write_handler(struct vlapic *vlapic); 101void vlapic_dfr_write_handler(struct vlapic *vlapic); 102void vlapic_svr_write_handler(struct vlapic *vlapic); 103void vlapic_esr_write_handler(struct vlapic *vlapic); 104int vlapic_icrlo_write_handler(struct vlapic *vlapic, bool *retu); 105void vlapic_icrtmr_write_handler(struct vlapic *vlapic); 106void vlapic_dcr_write_handler(struct vlapic *vlapic); 107void vlapic_lvt_write_handler(struct vlapic *vlapic, uint32_t offset); 108void vlapic_self_ipi_handler(struct vlapic *vlapic, uint64_t val); 109#endif /* _VLAPIC_H_ */ 110