- Merge in OFED 1.5.3 from projects/ofed/head

1 files changed, 129 insertions, 0 deletions

diff --git a/sys/ofed/include/linux/cdev.h b/sys/ofed/include/linux/cdev.h
new file mode 100644
index 0000000..cc77495
--- /dev/null
+++ b/sys/ofed/include/linux/cdev.h
@@ -0,0 +1,129 @@
+/*-
+ * Copyright (c) 2010 Isilon Systems, Inc.
+ * Copyright (c) 2010 iX Systems, Inc.
+ * Copyright (c) 2010 Panasas, Inc.
+ * 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.
+ */
+
+#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, 
+	    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_ */