1 /*
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.
5 *
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.
10 *
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.
14 */
15
16 #ifndef __KVM_IODEV_H__
17 #define __KVM_IODEV_H__
18
19 #include <linux/kvm_types.h>
20
21 struct kvm_io_device {
22 void (*read)(struct kvm_io_device *this,
23 gpa_t addr,
24 int len,
25 void *val);
26 void (*write)(struct kvm_io_device *this,
27 gpa_t addr,
28 int len,
29 const void *val);
30 int (*in_range)(struct kvm_io_device *this, gpa_t addr, int len,
31 int is_write);
32 void (*destructor)(struct kvm_io_device *this);
33
34 void *private;
35 };
36
kvm_iodevice_read(struct kvm_io_device * dev,gpa_t addr,int len,void * val)37 static inline void kvm_iodevice_read(struct kvm_io_device *dev,
38 gpa_t addr,
39 int len,
40 void *val)
41 {
42 dev->read(dev, addr, len, val);
43 }
44
kvm_iodevice_write(struct kvm_io_device * dev,gpa_t addr,int len,const void * val)45 static inline void kvm_iodevice_write(struct kvm_io_device *dev,
46 gpa_t addr,
47 int len,
48 const void *val)
49 {
50 dev->write(dev, addr, len, val);
51 }
52
kvm_iodevice_inrange(struct kvm_io_device * dev,gpa_t addr,int len,int is_write)53 static inline int kvm_iodevice_inrange(struct kvm_io_device *dev,
54 gpa_t addr, int len, int is_write)
55 {
56 return dev->in_range(dev, addr, len, is_write);
57 }
58
kvm_iodevice_destructor(struct kvm_io_device * dev)59 static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
60 {
61 if (dev->destructor)
62 dev->destructor(dev);
63 }
64
65 #endif /* __KVM_IODEV_H__ */
66