git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| e2174021 HB |
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 | ||
| edf88417 | 19 | #include <linux/kvm_types.h> |
| e2174021 | 20 | |
| d76685c4 GH |
21 | struct kvm_io_device; |
| 22 | ||
| 69fa2d78 MT |
23 | /** |
| 24 | * kvm_io_device_ops are called under kvm slots_lock. | |
| 25 | **/ | |
| d76685c4 | 26 | struct kvm_io_device_ops { |
| e2174021 HB |
27 | void (*read)(struct kvm_io_device *this, |
| 28 | gpa_t addr, | |
| 29 | int len, | |
| 30 | void *val); | |
| 31 | void (*write)(struct kvm_io_device *this, | |
| 32 | gpa_t addr, | |
| 33 | int len, | |
| 34 | const void *val); | |
| 92760499 LV |
35 | int (*in_range)(struct kvm_io_device *this, gpa_t addr, int len, |
| 36 | int is_write); | |
| e2174021 | 37 | void (*destructor)(struct kvm_io_device *this); |
| d76685c4 GH |
38 | }; |
| 39 | ||
| e2174021 | 40 | |
| d76685c4 GH |
41 | struct kvm_io_device { |
| 42 | const struct kvm_io_device_ops *ops; | |
| e2174021 HB |
43 | }; |
| 44 | ||
| d76685c4 GH |
45 | static inline void kvm_iodevice_init(struct kvm_io_device *dev, |
| 46 | const struct kvm_io_device_ops *ops) | |
| 47 | { | |
| 48 | dev->ops = ops; | |
| 49 | } | |
| 50 | ||
| e2174021 HB |
51 | static inline void kvm_iodevice_read(struct kvm_io_device *dev, |
| 52 | gpa_t addr, | |
| 53 | int len, | |
| 54 | void *val) | |
| 55 | { | |
| d76685c4 | 56 | dev->ops->read(dev, addr, len, val); |
| e2174021 HB |
57 | } |
| 58 | ||
| 59 | static inline void kvm_iodevice_write(struct kvm_io_device *dev, | |
| 60 | gpa_t addr, | |
| 61 | int len, | |
| 62 | const void *val) | |
| 63 | { | |
| d76685c4 | 64 | dev->ops->write(dev, addr, len, val); |
| e2174021 HB |
65 | } |
| 66 | ||
| d76685c4 GH |
67 | static inline int kvm_iodevice_in_range(struct kvm_io_device *dev, |
| 68 | gpa_t addr, int len, int is_write) | |
| e2174021 | 69 | { |
| d76685c4 | 70 | return dev->ops->in_range(dev, addr, len, is_write); |
| e2174021 HB |
71 | } |
| 72 | ||
| 73 | static inline void kvm_iodevice_destructor(struct kvm_io_device *dev) | |
| 74 | { | |
| d76685c4 GH |
75 | if (dev->ops->destructor) |
| 76 | dev->ops->destructor(dev); | |
| e2174021 HB |
77 | } |
| 78 | ||
| 79 | #endif /* __KVM_IODEV_H__ */ |