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/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_CDEV_H_
#define _LINUX_CDEV_H_
#include <linux/kobject.h>
#include <linux/sysfs.h>
#include <linux/kdev_t.h>
#include <linux/list.h>
struct file_operations;
struct inode;
struct module;
extern struct cdevsw linuxcdevsw;
extern const struct kobj_type linux_cdev_ktype;
extern const struct kobj_type linux_cdev_static_ktype;
struct linux_cdev {
struct kobject kobj;
struct module *owner;
struct cdev *cdev;
dev_t dev;
const struct file_operations *ops;
};
static inline void
cdev_init(struct linux_cdev *cdev, const struct file_operations *ops)
{
kobject_init(&cdev->kobj, &linux_cdev_static_ktype);
cdev->ops = ops;
}
static inline struct linux_cdev *
cdev_alloc(void)
{
struct linux_cdev *cdev;
cdev = kzalloc(sizeof(struct linux_cdev), M_WAITOK);
if (cdev)
kobject_init(&cdev->kobj, &linux_cdev_ktype);
return (cdev);
}
static inline void
cdev_put(struct linux_cdev *p)
{
kobject_put(&p->kobj);
}
static inline int
cdev_add(struct linux_cdev *cdev, dev_t dev, unsigned count)
{
if (count != 1)
panic("cdev_add: Unsupported count: %d", count);
cdev->cdev = make_dev(&linuxcdevsw, MINOR(dev), 0, 0, 0700,
"%s", kobject_name(&cdev->kobj));
cdev->dev = dev;
cdev->cdev->si_drv1 = cdev;
kobject_get(cdev->kobj.parent);
return (0);
}
static inline void
cdev_del(struct linux_cdev *cdev)
{
if (cdev->cdev) {
destroy_dev(cdev->cdev);
cdev->cdev = NULL;
}
kobject_put(&cdev->kobj);
}
#define cdev linux_cdev
#endif /* _LINUX_CDEV_H_ */
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