cregit-Linux how code gets into the kernel

Release 4.12 include/kvm/iodev.h

Directory: include/kvm
/*
 * 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, see <http://www.gnu.org/licenses/>.
 */

#ifndef __KVM_IODEV_H__

#define __KVM_IODEV_H__

#include <linux/kvm_types.h>
#include <linux/errno.h>

struct kvm_io_device;
struct kvm_vcpu;

/**
 * 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.
 **/

struct kvm_io_device_ops {
	
int (*read)(struct kvm_vcpu *vcpu,
		    struct kvm_io_device *this,
		    gpa_t addr,
		    int len,
		    void *val);
	
int (*write)(struct kvm_vcpu *vcpu,
		     struct kvm_io_device *this,
		     gpa_t addr,
		     int len,
		     const void *val);
	
void (*destructor)(struct kvm_io_device *this);
};



struct kvm_io_device {
	
const struct kvm_io_device_ops *ops;
};


static inline void kvm_iodevice_init(struct kvm_io_device *dev, const struct kvm_io_device_ops *ops) { dev->ops = ops; }

Contributors

PersonTokensPropCommitsCommitProp
Gregory Haskins24100.00%1100.00%
Total24100.00%1100.00%


static inline int kvm_iodevice_read(struct kvm_vcpu *vcpu, struct kvm_io_device *dev, gpa_t addr, int l, void *v) { return dev->ops->read ? dev->ops->read(vcpu, dev, addr, l, v) : -EOPNOTSUPP; }

Contributors

PersonTokensPropCommitsCommitProp
Hollis Blanchard2953.70%125.00%
Michael S. Tsirkin1629.63%125.00%
Nikolay Nikolaev712.96%125.00%
Gregory Haskins23.70%125.00%
Total54100.00%4100.00%


static inline int kvm_iodevice_write(struct kvm_vcpu *vcpu, struct kvm_io_device *dev, gpa_t addr, int l, const void *v) { return dev->ops->write ? dev->ops->write(vcpu, dev, addr, l, v) : -EOPNOTSUPP; }

Contributors

PersonTokensPropCommitsCommitProp
Hollis Blanchard3156.36%120.00%
Michael S. Tsirkin1120.00%120.00%
Nikolay Nikolaev712.73%120.00%
Gregory Haskins47.27%120.00%
Laurent Vivier23.64%120.00%
Total55100.00%5100.00%


static inline void kvm_iodevice_destructor(struct kvm_io_device *dev) { if (dev->ops->destructor) dev->ops->destructor(dev); }

Contributors

PersonTokensPropCommitsCommitProp
Hollis Blanchard2586.21%150.00%
Gregory Haskins413.79%150.00%
Total29100.00%2100.00%

#endif /* __KVM_IODEV_H__ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Hollis Blanchard15758.58%114.29%
Gregory Haskins4717.54%114.29%
Michael S. Tsirkin3211.94%114.29%
Nikolay Nikolaev2710.07%114.29%
Andre Przywara20.75%114.29%
Laurent Vivier20.75%114.29%
Avi Kivity10.37%114.29%
Total268100.00%7100.00%
Directory: include/kvm
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