1/* $NetBSD: hypervvar.h,v 1.6 2022/05/20 13:55:17 nonaka Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 5 * 6 * Copyright (c) 2009-2012,2016-2017 Microsoft Corp. 7 * Copyright (c) 2012 NetApp Inc. 8 * Copyright (c) 2012 Citrix Inc. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice unmodified, this list of conditions, and the following 16 * disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * $FreeBSD: head/sys/dev/hyperv/include/hyperv.h 326255 2017-11-27 14:52:40Z pfg $ 33 */ 34 35#ifndef _HYPERVVAR_H_ 36#define _HYPERVVAR_H_ 37 38#if defined(_KERNEL) 39 40#include <sys/bus.h> 41#include <sys/timex.h> 42 43#define HYPERV_TIMER_NS_FACTOR 100ULL 44#define HYPERV_TIMER_FREQ (NANOSECOND / HYPERV_TIMER_NS_FACTOR) 45 46#endif /* _KERNEL */ 47 48/* 49 * Hyper-V Reference TSC 50 */ 51struct hyperv_reftsc { 52 volatile uint32_t tsc_seq; 53 volatile uint32_t tsc_rsvd1; 54 volatile uint64_t tsc_scale; 55 volatile int64_t tsc_ofs; 56} __packed __aligned(PAGE_SIZE); 57#ifdef __CTASSERT 58__CTASSERT(sizeof(struct hyperv_reftsc) == PAGE_SIZE); 59#endif 60 61#if defined(_KERNEL) 62extern u_int hyperv_ver_major; 63 64int hyperv_hypercall_enabled(void); 65int hyperv_synic_supported(void); 66int hyperv_is_gen1(void); 67void hyperv_send_eom(void); 68void hyperv_intr(void); 69uint32_t hyperv_get_vcpuid(cpuid_t); 70 71struct vmbus_softc; 72void vmbus_init_interrupts_md(struct vmbus_softc *, cpuid_t); 73void vmbus_deinit_interrupts_md(struct vmbus_softc *, cpuid_t); 74void vmbus_init_synic_md(struct vmbus_softc *, cpuid_t); 75void vmbus_deinit_synic_md(struct vmbus_softc *, cpuid_t); 76 77#define HYPERV_GUID_STRLEN 40 78struct hyperv_guid; 79int hyperv_guid2str(const struct hyperv_guid *, char *, size_t); 80 81/* 82 * hyperv_tc64 could be NULL, if there were no suitable Hyper-V 83 * specific timecounter. 84 */ 85typedef uint64_t (*hyperv_tc64_t)(void); 86extern hyperv_tc64_t hyperv_tc64; 87 88uint64_t hyperv_hypercall(uint64_t, paddr_t, paddr_t); 89uint64_t hyperv_hypercall_post_message(paddr_t); 90uint64_t hyperv_hypercall_signal_event(paddr_t); 91 92typedef void (*hyperv_proc_t)(void *, struct cpu_info *); 93void hyperv_set_event_proc(hyperv_proc_t, void *); 94void hyperv_set_message_proc(hyperv_proc_t, void *); 95 96/* 97 * Hyper-V bus_dma utilities. 98 */ 99struct hyperv_dma { 100 bus_dmamap_t map; 101 bus_dma_segment_t *segs; 102 void *addr; 103 int nsegs; 104}; 105 106static __inline bus_addr_t 107hyperv_dma_get_paddr(struct hyperv_dma *dma) 108{ 109 return dma->map->dm_segs[0].ds_addr; 110} 111 112void *hyperv_dma_alloc(bus_dma_tag_t, struct hyperv_dma *, bus_size_t, 113 bus_size_t, bus_size_t, int); 114void hyperv_dma_free(bus_dma_tag_t, struct hyperv_dma *); 115 116#endif /* _KERNEL */ 117 118#endif /* _HYPERVVAR_H_ */ 119