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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2011 NetApp, Inc.
* Copyright (C) 2015 Mihai Carabas <mihai.carabas@gmail.com>
* All rights reserved.
*/
#ifndef _DEV_VMM_DEV_H_
#define _DEV_VMM_DEV_H_
#include <sys/types.h>
#include <sys/ioccom.h>
#include <machine/vmm_dev.h>
#include <dev/vmm/vmm_param.h>
#ifdef _KERNEL
struct thread;
struct vm;
struct vcpu;
int vmm_modinit(void);
int vmm_modcleanup(void);
int vmmdev_machdep_ioctl(struct vm *vm, struct vcpu *vcpu, u_long cmd,
caddr_t data, int fflag, struct thread *td);
/*
* Entry in an ioctl handler table. A number of generic ioctls are defined,
* plus a table of machine-dependent ioctls. The flags indicate the
* required preconditions for a given ioctl.
*
* Some ioctls encode a vcpuid as the first member of their ioctl structure.
* These ioctls must specify one of the following flags:
* - ALLOC_VCPU: create the vCPU if it does not already exist
* - LOCK_ONE_VCPU: create the vCPU if it does not already exist
* and lock the vCPU for the duration of the ioctl
* - MAYBE_ALLOC_VCPU: if the vcpuid is -1, do nothing, otherwise
* create the vCPU if it does not already exist
*/
struct vmmdev_ioctl {
unsigned long cmd;
#define VMMDEV_IOCTL_SLOCK_MEMSEGS 0x01
#define VMMDEV_IOCTL_XLOCK_MEMSEGS 0x02
#define VMMDEV_IOCTL_LOCK_ONE_VCPU 0x04
#define VMMDEV_IOCTL_LOCK_ALL_VCPUS 0x08
#define VMMDEV_IOCTL_ALLOC_VCPU 0x10
#define VMMDEV_IOCTL_MAYBE_ALLOC_VCPU 0x20
#define VMMDEV_IOCTL_PRIV_CHECK_DRIVER 0x40
int flags;
};
#define VMMDEV_IOCTL(_cmd, _flags) { .cmd = (_cmd), .flags = (_flags) }
extern const struct vmmdev_ioctl vmmdev_machdep_ioctls[];
extern const size_t vmmdev_machdep_ioctl_count;
/*
* Upper limit on vm_maxcpu. Limited by use of uint16_t types for CPU counts as
* well as range of vpid values for VT-x on amd64 and by the capacity of
* cpuset_t masks. The call to new_unrhdr() in vpid_init() in vmx.c requires
* 'vm_maxcpu + 1 <= 0xffff', hence the '- 1' below.
*/
#define VM_MAXCPU MIN(0xffff - 1, CPU_SETSIZE)
/* Maximum number of vCPUs in a single VM. */
extern u_int vm_maxcpu;
#endif /* _KERNEL */
#define VMMCTL_CREATE_DESTROY_ON_CLOSE 0x1
#define VMMCTL_FLAGS_MASK (VMMCTL_CREATE_DESTROY_ON_CLOSE)
struct vmmctl_vm_create {
char name[VM_MAX_NAMELEN + 1];
uint32_t flags;
int reserved[15];
};
struct vmmctl_vm_destroy {
char name[VM_MAX_NAMELEN + 1];
int reserved[16];
};
#define VMMCTL_VM_CREATE _IOWR('V', 0, struct vmmctl_vm_create)
#define VMMCTL_VM_DESTROY _IOWR('V', 1, struct vmmctl_vm_destroy)
#endif /* _DEV_VMM_DEV_H_ */
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