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/*- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
* Copyright (c) 2009-2012,2016-2017, 2022 Microsoft Corp.
* Copyright (c) 2012 NetApp Inc.
* Copyright (c) 2012 Citrix Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* Implements low-level interactions with Hyper-V/Azure
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/timetc.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_extern.h>
#include <vm/vm_kern.h>
#include <dev/hyperv/include/hyperv.h>
#include <dev/hyperv/include/hyperv_busdma.h>
#include <dev/hyperv/vmbus/aarch64/hyperv_machdep.h>
#include <dev/hyperv/vmbus/aarch64/hyperv_reg.h>
#include <dev/hyperv/vmbus/hyperv_var.h>
void hyperv_init_tc(void);
int hypercall_page_setup(vm_paddr_t);
void hypercall_disable(void);
bool hyperv_identify_features(void);
u_int hyperv_ver_major;
u_int hyperv_features;
u_int hyperv_recommends;
hyperv_tc64_t hyperv_tc64;
void
hyperv_init_tc(void)
{
hyperv_tc64 = NULL;
}
int
hypercall_page_setup(vm_paddr_t hc)
{
return (0);
}
void
hypercall_disable(void)
{
return;
}
bool
hyperv_identify_features(void)
{
struct hv_get_vp_registers_output result;
vm_guest = VM_GUEST_HV;
hv_get_vpreg_128(CPUID_LEAF_HV_FEATURES, &result);
hyperv_features = result.as32.a;
hv_get_vpreg_128(CPUID_LEAF_HV_IDENTITY, &result);
hyperv_ver_major = result.as32.b >> 16;
hv_get_vpreg_128(CPUID_LEAF_HV_RECOMMENDS, &result);
hyperv_recommends = result.as32.a;
return (true);
}
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