2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
16 #ifndef __KVM_IODEV_H__
17 #define __KVM_IODEV_H__
19 #include <linux/kvm_types.h>
24 * kvm_io_device_ops are called under kvm slots_lock.
26 struct kvm_io_device_ops {
27 void (*read)(struct kvm_io_device *this,
31 void (*write)(struct kvm_io_device *this,
35 int (*in_range)(struct kvm_io_device *this, gpa_t addr, int len,
37 void (*destructor)(struct kvm_io_device *this);
41 struct kvm_io_device {
42 const struct kvm_io_device_ops *ops;
45 static inline void kvm_iodevice_init(struct kvm_io_device *dev,
46 const struct kvm_io_device_ops *ops)
51 static inline void kvm_iodevice_read(struct kvm_io_device *dev,
56 dev->ops->read(dev, addr, len, val);
59 static inline void kvm_iodevice_write(struct kvm_io_device *dev,
64 dev->ops->write(dev, addr, len, val);
67 static inline int kvm_iodevice_in_range(struct kvm_io_device *dev,
68 gpa_t addr, int len, int is_write)
70 return dev->ops->in_range(dev, addr, len, is_write);
73 static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
75 if (dev->ops->destructor)
76 dev->ops->destructor(dev);
79 #endif /* __KVM_IODEV_H__ */