diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/cdev.h')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/cdev.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/cdev.h b/sys/compat/linuxkpi/common/include/linux/cdev.h new file mode 100644 index 0000000..9d5b3fb --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/cdev.h @@ -0,0 +1,131 @@ +/*- + * 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/kdev_t.h> +#include <linux/list.h> + +struct file_operations; +struct inode; +struct module; + +extern struct cdevsw linuxcdevsw; + +struct linux_cdev { + struct kobject kobj; + struct module *owner; + struct cdev *cdev; + dev_t dev; + const struct file_operations *ops; +}; + +static inline void +cdev_release(struct kobject *kobj) +{ + struct linux_cdev *cdev; + + cdev = container_of(kobj, struct linux_cdev, kobj); + if (cdev->cdev) + destroy_dev(cdev->cdev); + kfree(cdev); +} + +static inline void +cdev_static_release(struct kobject *kobj) +{ + struct linux_cdev *cdev; + + cdev = container_of(kobj, struct linux_cdev, kobj); + if (cdev->cdev) + destroy_dev(cdev->cdev); +} + +static struct kobj_type cdev_ktype = { + .release = cdev_release, +}; + +static struct kobj_type cdev_static_ktype = { + .release = cdev_static_release, +}; + +static inline void +cdev_init(struct linux_cdev *cdev, const struct file_operations *ops) +{ + + kobject_init(&cdev->kobj, &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, &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; + + 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_ */ |
