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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright 2011 various Linux Kernel contributors.
* Copyright 2011 Joyent, Inc. All Rights Reserved.
*/
#ifndef __KVM_IODEV_H__
#define __KVM_IODEV_H__
#include "kvm_types.h"
struct kvm_io_device;
/*
* kvm_io_device_ops are called under kvm slots_lock.
* read and write handlers return 0 if the transaction has been handled,
* or non-zero to have it passed to the next device.
*/
typedef struct kvm_io_device_ops {
int (*read)(struct kvm_io_device *, gpa_t, int, void *);
int (*write)(struct kvm_io_device *, gpa_t, int, const void *);
void (*destructor)(struct kvm_io_device *);
} kvm_io_device_ops_t;
typedef struct kvm_io_device {
struct kvm_lapic *lapic;
const struct kvm_io_device_ops *ops;
} kvm_io_device_t;
extern void kvm_iodevice_init(struct kvm_io_device *,
const struct kvm_io_device_ops *);
extern int kvm_iodevice_read(struct kvm_io_device *,
gpa_t, int, void *);
extern int kvm_iodevice_write(struct kvm_io_device *,
gpa_t, int, const void *);
extern void kvm_iodevice_destructor(struct kvm_io_device *);
#endif /* __KVM_IODEV_H__ */
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