222afabb3b
signals. This introduces a new kernel and userland NVMM version indicating this support. Patch by Kamil Rytarowski <kamil@netbsd.org> and committed on his request.
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/* $NetBSD: nvmm.h,v 1.16 2021/03/26 15:59:53 reinoud Exp $ */
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/*
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* Copyright (c) 2018-2020 Maxime Villard, m00nbsd.net
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* All rights reserved.
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*
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* This code is part of the NVMM hypervisor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NVMM_H_
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#define _NVMM_H_
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#include <sys/types.h>
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#ifndef _KERNEL
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#include <stdbool.h>
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#endif
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typedef uint64_t gpaddr_t;
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typedef uint64_t gvaddr_t;
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typedef uint32_t nvmm_machid_t;
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typedef uint32_t nvmm_cpuid_t;
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#if defined(__x86_64__)
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#include <dev/nvmm/x86/nvmm_x86.h>
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#endif
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#define NVMM_KERN_VERSION 2
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/*
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* Version 1 - Initial release in NetBSD 9.0.
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* Version 2 - Added nvmm_vcpu::stop.
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*/
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struct nvmm_capability {
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uint32_t version;
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uint32_t state_size;
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uint32_t max_machines;
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uint32_t max_vcpus;
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uint64_t max_ram;
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struct nvmm_cap_md arch;
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};
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/* Machine configuration slots. */
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#define NVMM_MACH_CONF_LIBNVMM_BEGIN 0
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#define NVMM_MACH_CONF_MI_BEGIN 100
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#define NVMM_MACH_CONF_MD_BEGIN 200
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#define NVMM_MACH_CONF_MD(op) (op - NVMM_MACH_CONF_MD_BEGIN)
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/* VCPU configuration slots. */
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#define NVMM_VCPU_CONF_LIBNVMM_BEGIN 0
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#define NVMM_VCPU_CONF_MI_BEGIN 100
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#define NVMM_VCPU_CONF_MD_BEGIN 200
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#define NVMM_VCPU_CONF_MD(op) (op - NVMM_VCPU_CONF_MD_BEGIN)
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struct nvmm_comm_page {
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/* State. */
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uint64_t state_wanted;
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uint64_t state_cached;
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uint64_t state_commit;
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struct nvmm_vcpu_state state;
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/* Event. */
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bool event_commit;
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struct nvmm_vcpu_event event;
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/* Race-free exit from nvmm_vcpu_run() without signals. */
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volatile int stop;
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};
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/*
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* Bits 20:27 -> machid
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* Bits 12:19 -> cpuid
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*/
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#define NVMM_COMM_OFF(machid, cpuid) \
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((((uint64_t)machid & 0xFFULL) << 20) | (((uint64_t)cpuid & 0xFFULL) << 12))
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#define NVMM_COMM_MACHID(off) \
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((off >> 20) & 0xFF)
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#define NVMM_COMM_CPUID(off) \
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((off >> 12) & 0xFF)
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#ifdef _KERNEL
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/* At most one page, for the NVMM_COMM_* macros. */
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CTASSERT(sizeof(struct nvmm_comm_page) <= PAGE_SIZE);
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#endif
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#endif
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