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/* $NetBSD: nvmm.h,v 1.16 2021/03/26 15:59:53 reinoud Exp $ */
/*
* Copyright (c) 2018-2020 Maxime Villard, m00nbsd.net
* All rights reserved.
*
* This code is part of the NVMM hypervisor.
*
* 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, 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.
*/
#ifndef _NVMM_H_
#define _NVMM_H_
#include <sys/types.h>
#ifndef _KERNEL
#include <stdbool.h>
#endif
typedef uint64_t gpaddr_t;
typedef uint64_t gvaddr_t;
typedef uint32_t nvmm_machid_t;
typedef uint32_t nvmm_cpuid_t;
#if defined(__x86_64__)
#include <dev/nvmm/x86/nvmm_x86.h>
#endif
#define NVMM_KERN_VERSION 2
/*
* Version 1 - Initial release in NetBSD 9.0.
* Version 2 - Added nvmm_vcpu::stop.
*/
struct nvmm_capability {
uint32_t version;
uint32_t state_size;
uint32_t max_machines;
uint32_t max_vcpus;
uint64_t max_ram;
struct nvmm_cap_md arch;
};
/* Machine configuration slots. */
#define NVMM_MACH_CONF_LIBNVMM_BEGIN 0
#define NVMM_MACH_CONF_MI_BEGIN 100
#define NVMM_MACH_CONF_MD_BEGIN 200
#define NVMM_MACH_CONF_MD(op) (op - NVMM_MACH_CONF_MD_BEGIN)
/* VCPU configuration slots. */
#define NVMM_VCPU_CONF_LIBNVMM_BEGIN 0
#define NVMM_VCPU_CONF_MI_BEGIN 100
#define NVMM_VCPU_CONF_MD_BEGIN 200
#define NVMM_VCPU_CONF_MD(op) (op - NVMM_VCPU_CONF_MD_BEGIN)
struct nvmm_comm_page {
/* State. */
uint64_t state_wanted;
uint64_t state_cached;
uint64_t state_commit;
struct nvmm_vcpu_state state;
/* Event. */
bool event_commit;
struct nvmm_vcpu_event event;
/* Race-free exit from nvmm_vcpu_run() without signals. */
volatile int stop;
};
/*
* Bits 20:27 -> machid
* Bits 12:19 -> cpuid
*/
#define NVMM_COMM_OFF(machid, cpuid) \
((((uint64_t)machid & 0xFFULL) << 20) | (((uint64_t)cpuid & 0xFFULL) << 12))
#define NVMM_COMM_MACHID(off) \
((off >> 20) & 0xFF)
#define NVMM_COMM_CPUID(off) \
((off >> 12) & 0xFF)
#ifdef _KERNEL
/* At most one page, for the NVMM_COMM_* macros. */
CTASSERT(sizeof(struct nvmm_comm_page) <= PAGE_SIZE);
#endif
#endif
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