1*c2ac0d61Snonaka /* $NetBSD: hypervvar.h,v 1.6 2022/05/20 13:55:17 nonaka Exp $ */
2afdb7e40Snonaka
3afdb7e40Snonaka /*-
4afdb7e40Snonaka * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
5afdb7e40Snonaka *
6afdb7e40Snonaka * Copyright (c) 2009-2012,2016-2017 Microsoft Corp.
7afdb7e40Snonaka * Copyright (c) 2012 NetApp Inc.
8afdb7e40Snonaka * Copyright (c) 2012 Citrix Inc.
9afdb7e40Snonaka * All rights reserved.
10afdb7e40Snonaka *
11afdb7e40Snonaka * Redistribution and use in source and binary forms, with or without
12afdb7e40Snonaka * modification, are permitted provided that the following conditions
13afdb7e40Snonaka * are met:
14afdb7e40Snonaka * 1. Redistributions of source code must retain the above copyright
15afdb7e40Snonaka * notice unmodified, this list of conditions, and the following
16afdb7e40Snonaka * disclaimer.
17afdb7e40Snonaka * 2. Redistributions in binary form must reproduce the above copyright
18afdb7e40Snonaka * notice, this list of conditions and the following disclaimer in the
19afdb7e40Snonaka * documentation and/or other materials provided with the distribution.
20afdb7e40Snonaka *
21afdb7e40Snonaka * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22afdb7e40Snonaka * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23afdb7e40Snonaka * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24afdb7e40Snonaka * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25afdb7e40Snonaka * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26afdb7e40Snonaka * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27afdb7e40Snonaka * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28afdb7e40Snonaka * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29afdb7e40Snonaka * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30afdb7e40Snonaka * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31afdb7e40Snonaka *
32afdb7e40Snonaka * $FreeBSD: head/sys/dev/hyperv/include/hyperv.h 326255 2017-11-27 14:52:40Z pfg $
33afdb7e40Snonaka */
34afdb7e40Snonaka
35afdb7e40Snonaka #ifndef _HYPERVVAR_H_
36afdb7e40Snonaka #define _HYPERVVAR_H_
37afdb7e40Snonaka
38afdb7e40Snonaka #if defined(_KERNEL)
39afdb7e40Snonaka
40afdb7e40Snonaka #include <sys/bus.h>
41afdb7e40Snonaka #include <sys/timex.h>
42afdb7e40Snonaka
43afdb7e40Snonaka #define HYPERV_TIMER_NS_FACTOR 100ULL
44afdb7e40Snonaka #define HYPERV_TIMER_FREQ (NANOSECOND / HYPERV_TIMER_NS_FACTOR)
45afdb7e40Snonaka
46afdb7e40Snonaka #endif /* _KERNEL */
47afdb7e40Snonaka
48afdb7e40Snonaka /*
49afdb7e40Snonaka * Hyper-V Reference TSC
50afdb7e40Snonaka */
51afdb7e40Snonaka struct hyperv_reftsc {
52afdb7e40Snonaka volatile uint32_t tsc_seq;
53afdb7e40Snonaka volatile uint32_t tsc_rsvd1;
54afdb7e40Snonaka volatile uint64_t tsc_scale;
55afdb7e40Snonaka volatile int64_t tsc_ofs;
56afdb7e40Snonaka } __packed __aligned(PAGE_SIZE);
57afdb7e40Snonaka #ifdef __CTASSERT
58afdb7e40Snonaka __CTASSERT(sizeof(struct hyperv_reftsc) == PAGE_SIZE);
59afdb7e40Snonaka #endif
60afdb7e40Snonaka
61afdb7e40Snonaka #if defined(_KERNEL)
62*c2ac0d61Snonaka extern u_int hyperv_ver_major;
63afdb7e40Snonaka
64afdb7e40Snonaka int hyperv_hypercall_enabled(void);
65afdb7e40Snonaka int hyperv_synic_supported(void);
66c270bf03Snonaka int hyperv_is_gen1(void);
67afdb7e40Snonaka void hyperv_send_eom(void);
68afdb7e40Snonaka void hyperv_intr(void);
69c8f38739Snonaka uint32_t hyperv_get_vcpuid(cpuid_t);
70afdb7e40Snonaka
71afdb7e40Snonaka struct vmbus_softc;
72e166e806Syamaguchi void vmbus_init_interrupts_md(struct vmbus_softc *, cpuid_t);
73e166e806Syamaguchi void vmbus_deinit_interrupts_md(struct vmbus_softc *, cpuid_t);
74afdb7e40Snonaka void vmbus_init_synic_md(struct vmbus_softc *, cpuid_t);
75afdb7e40Snonaka void vmbus_deinit_synic_md(struct vmbus_softc *, cpuid_t);
76afdb7e40Snonaka
77afdb7e40Snonaka #define HYPERV_GUID_STRLEN 40
78afdb7e40Snonaka struct hyperv_guid;
79afdb7e40Snonaka int hyperv_guid2str(const struct hyperv_guid *, char *, size_t);
80afdb7e40Snonaka
81afdb7e40Snonaka /*
82afdb7e40Snonaka * hyperv_tc64 could be NULL, if there were no suitable Hyper-V
83afdb7e40Snonaka * specific timecounter.
84afdb7e40Snonaka */
85afdb7e40Snonaka typedef uint64_t (*hyperv_tc64_t)(void);
86afdb7e40Snonaka extern hyperv_tc64_t hyperv_tc64;
87afdb7e40Snonaka
88afdb7e40Snonaka uint64_t hyperv_hypercall(uint64_t, paddr_t, paddr_t);
89afdb7e40Snonaka uint64_t hyperv_hypercall_post_message(paddr_t);
90afdb7e40Snonaka uint64_t hyperv_hypercall_signal_event(paddr_t);
91afdb7e40Snonaka
92afdb7e40Snonaka typedef void (*hyperv_proc_t)(void *, struct cpu_info *);
93afdb7e40Snonaka void hyperv_set_event_proc(hyperv_proc_t, void *);
94afdb7e40Snonaka void hyperv_set_message_proc(hyperv_proc_t, void *);
95afdb7e40Snonaka
96afdb7e40Snonaka /*
97afdb7e40Snonaka * Hyper-V bus_dma utilities.
98afdb7e40Snonaka */
99afdb7e40Snonaka struct hyperv_dma {
100afdb7e40Snonaka bus_dmamap_t map;
101afdb7e40Snonaka bus_dma_segment_t *segs;
102afdb7e40Snonaka void *addr;
103afdb7e40Snonaka int nsegs;
104afdb7e40Snonaka };
105afdb7e40Snonaka
106afdb7e40Snonaka static __inline bus_addr_t
hyperv_dma_get_paddr(struct hyperv_dma * dma)107afdb7e40Snonaka hyperv_dma_get_paddr(struct hyperv_dma *dma)
108afdb7e40Snonaka {
109afdb7e40Snonaka return dma->map->dm_segs[0].ds_addr;
110afdb7e40Snonaka }
111afdb7e40Snonaka
112afdb7e40Snonaka void *hyperv_dma_alloc(bus_dma_tag_t, struct hyperv_dma *, bus_size_t,
113*c2ac0d61Snonaka bus_size_t, bus_size_t, int);
114afdb7e40Snonaka void hyperv_dma_free(bus_dma_tag_t, struct hyperv_dma *);
115afdb7e40Snonaka
116afdb7e40Snonaka #endif /* _KERNEL */
117afdb7e40Snonaka
118afdb7e40Snonaka #endif /* _HYPERVVAR_H_ */
119