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-rw-r--r--sys/compat/linuxkpi/common/include/linux/cdev.h131
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 000000000000..9d5b3fb0f240
--- /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_ */