1 /* $NetBSD: hypervvar.h,v 1.5 2021/12/23 04:06:51 yamaguchi 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 */ 51 struct 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) 62 63 int hyperv_hypercall_enabled(void); 64 int hyperv_synic_supported(void); 65 int hyperv_is_gen1(void); 66 void hyperv_send_eom(void); 67 void hyperv_intr(void); 68 uint32_t hyperv_get_vcpuid(cpuid_t); 69 70 struct vmbus_softc; 71 void vmbus_init_interrupts_md(struct vmbus_softc *, cpuid_t); 72 void vmbus_deinit_interrupts_md(struct vmbus_softc *, cpuid_t); 73 void vmbus_init_synic_md(struct vmbus_softc *, cpuid_t); 74 void vmbus_deinit_synic_md(struct vmbus_softc *, cpuid_t); 75 76 #define HYPERV_GUID_STRLEN 40 77 struct hyperv_guid; 78 int hyperv_guid2str(const struct hyperv_guid *, char *, size_t); 79 80 /* 81 * hyperv_tc64 could be NULL, if there were no suitable Hyper-V 82 * specific timecounter. 83 */ 84 typedef uint64_t (*hyperv_tc64_t)(void); 85 extern hyperv_tc64_t hyperv_tc64; 86 87 uint64_t hyperv_hypercall(uint64_t, paddr_t, paddr_t); 88 uint64_t hyperv_hypercall_post_message(paddr_t); 89 uint64_t hyperv_hypercall_signal_event(paddr_t); 90 91 typedef void (*hyperv_proc_t)(void *, struct cpu_info *); 92 void hyperv_set_event_proc(hyperv_proc_t, void *); 93 void hyperv_set_message_proc(hyperv_proc_t, void *); 94 95 /* 96 * Hyper-V bus_dma utilities. 97 */ 98 struct hyperv_dma { 99 bus_dmamap_t map; 100 bus_dma_segment_t *segs; 101 void *addr; 102 int nsegs; 103 }; 104 105 static __inline bus_addr_t 106 hyperv_dma_get_paddr(struct hyperv_dma *dma) 107 { 108 return dma->map->dm_segs[0].ds_addr; 109 } 110 111 #define HYPERV_DMA_SLEEPOK 0 112 #define HYPERV_DMA_NOSLEEP __BIT(0) 113 void *hyperv_dma_alloc(bus_dma_tag_t, struct hyperv_dma *, bus_size_t, 114 bus_size_t, bus_size_t, int, int); 115 void hyperv_dma_free(bus_dma_tag_t, struct hyperv_dma *); 116 117 #endif /* _KERNEL */ 118 119 #endif /* _HYPERVVAR_H_ */ 120