1*8d59ecb2SHans Petter Selasky /*- 2*8d59ecb2SHans Petter Selasky * Copyright (c) 2010 Isilon Systems, Inc. 3*8d59ecb2SHans Petter Selasky * Copyright (c) 2010 iX Systems, Inc. 4*8d59ecb2SHans Petter Selasky * Copyright (c) 2010 Panasas, Inc. 5*8d59ecb2SHans Petter Selasky * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6*8d59ecb2SHans Petter Selasky * All rights reserved. 7*8d59ecb2SHans Petter Selasky * 8*8d59ecb2SHans Petter Selasky * Redistribution and use in source and binary forms, with or without 9*8d59ecb2SHans Petter Selasky * modification, are permitted provided that the following conditions 10*8d59ecb2SHans Petter Selasky * are met: 11*8d59ecb2SHans Petter Selasky * 1. Redistributions of source code must retain the above copyright 12*8d59ecb2SHans Petter Selasky * notice unmodified, this list of conditions, and the following 13*8d59ecb2SHans Petter Selasky * disclaimer. 14*8d59ecb2SHans Petter Selasky * 2. Redistributions in binary form must reproduce the above copyright 15*8d59ecb2SHans Petter Selasky * notice, this list of conditions and the following disclaimer in the 16*8d59ecb2SHans Petter Selasky * documentation and/or other materials provided with the distribution. 17*8d59ecb2SHans Petter Selasky * 18*8d59ecb2SHans Petter Selasky * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19*8d59ecb2SHans Petter Selasky * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20*8d59ecb2SHans Petter Selasky * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21*8d59ecb2SHans Petter Selasky * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22*8d59ecb2SHans Petter Selasky * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23*8d59ecb2SHans Petter Selasky * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24*8d59ecb2SHans Petter Selasky * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25*8d59ecb2SHans Petter Selasky * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26*8d59ecb2SHans Petter Selasky * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27*8d59ecb2SHans Petter Selasky * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28*8d59ecb2SHans Petter Selasky * 29*8d59ecb2SHans Petter Selasky * $FreeBSD$ 30*8d59ecb2SHans Petter Selasky */ 31*8d59ecb2SHans Petter Selasky #ifndef _LINUX_MISCDEVICE_H_ 32*8d59ecb2SHans Petter Selasky #define _LINUX_MISCDEVICE_H_ 33*8d59ecb2SHans Petter Selasky 34*8d59ecb2SHans Petter Selasky #define MISC_DYNAMIC_MINOR -1 35*8d59ecb2SHans Petter Selasky 36*8d59ecb2SHans Petter Selasky #include <linux/device.h> 37*8d59ecb2SHans Petter Selasky #include <linux/cdev.h> 38*8d59ecb2SHans Petter Selasky 39*8d59ecb2SHans Petter Selasky struct miscdevice { 40*8d59ecb2SHans Petter Selasky const char *name; 41*8d59ecb2SHans Petter Selasky struct device *this_device; 42*8d59ecb2SHans Petter Selasky const struct file_operations *fops; 43*8d59ecb2SHans Petter Selasky struct cdev *cdev; 44*8d59ecb2SHans Petter Selasky int minor; 45*8d59ecb2SHans Petter Selasky const char *nodename; 46*8d59ecb2SHans Petter Selasky umode_t mode; 47*8d59ecb2SHans Petter Selasky }; 48*8d59ecb2SHans Petter Selasky 49*8d59ecb2SHans Petter Selasky extern struct class miscclass; 50*8d59ecb2SHans Petter Selasky 51*8d59ecb2SHans Petter Selasky static inline int 52*8d59ecb2SHans Petter Selasky misc_register(struct miscdevice *misc) 53*8d59ecb2SHans Petter Selasky { 54*8d59ecb2SHans Petter Selasky misc->this_device = device_create(&miscclass, &linux_rootdev, 0, misc, 55*8d59ecb2SHans Petter Selasky misc->name); 56*8d59ecb2SHans Petter Selasky misc->cdev = cdev_alloc(); 57*8d59ecb2SHans Petter Selasky if (misc->cdev == NULL) 58*8d59ecb2SHans Petter Selasky return -ENOMEM; 59*8d59ecb2SHans Petter Selasky misc->cdev->owner = THIS_MODULE; 60*8d59ecb2SHans Petter Selasky misc->cdev->ops = misc->fops; 61*8d59ecb2SHans Petter Selasky kobject_set_name(&misc->cdev->kobj, misc->name); 62*8d59ecb2SHans Petter Selasky if (cdev_add(misc->cdev, misc->this_device->devt, 1)) 63*8d59ecb2SHans Petter Selasky return -EINVAL; 64*8d59ecb2SHans Petter Selasky return (0); 65*8d59ecb2SHans Petter Selasky } 66*8d59ecb2SHans Petter Selasky 67*8d59ecb2SHans Petter Selasky static inline int 68*8d59ecb2SHans Petter Selasky misc_deregister(struct miscdevice *misc) 69*8d59ecb2SHans Petter Selasky { 70*8d59ecb2SHans Petter Selasky device_destroy(&miscclass, misc->this_device->devt); 71*8d59ecb2SHans Petter Selasky cdev_del(misc->cdev); 72*8d59ecb2SHans Petter Selasky 73*8d59ecb2SHans Petter Selasky return (0); 74*8d59ecb2SHans Petter Selasky } 75*8d59ecb2SHans Petter Selasky 76*8d59ecb2SHans Petter Selasky #endif /* _LINUX_MISCDEVICE_H_ */ 77