diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/miscdevice.h')
-rw-r--r-- | sys/compat/linuxkpi/common/include/linux/miscdevice.h | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/miscdevice.h b/sys/compat/linuxkpi/common/include/linux/miscdevice.h new file mode 100644 index 0000000..96d8fe7 --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/miscdevice.h @@ -0,0 +1,76 @@ +/*- + * 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_MISCDEVICE_H_ +#define _LINUX_MISCDEVICE_H_ + +#define MISC_DYNAMIC_MINOR -1 + +#include <linux/device.h> +#include <linux/cdev.h> + +struct miscdevice { + const char *name; + struct device *this_device; + const struct file_operations *fops; + struct cdev *cdev; + int minor; + const char *nodename; + umode_t mode; +}; + +extern struct class miscclass; + +static inline int +misc_register(struct miscdevice *misc) +{ + misc->this_device = device_create(&miscclass, &linux_rootdev, 0, misc, + misc->name); + misc->cdev = cdev_alloc(); + if (misc->cdev == NULL) + return -ENOMEM; + misc->cdev->owner = THIS_MODULE; + misc->cdev->ops = misc->fops; + kobject_set_name(&misc->cdev->kobj, misc->name); + if (cdev_add(misc->cdev, misc->this_device->devt, 1)) + return -EINVAL; + return (0); +} + +static inline int +misc_deregister(struct miscdevice *misc) +{ + device_destroy(&miscclass, misc->this_device->devt); + cdev_del(misc->cdev); + + return (0); +} + +#endif /* _LINUX_MISCDEVICE_H_ */ |