aboutsummaryrefslogtreecommitdiff
path: root/sys/compat/linuxkpi/common/include/linux/device.h
diff options
context:
space:
mode:
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/device.h')
-rw-r--r--sys/compat/linuxkpi/common/include/linux/device.h424
1 files changed, 424 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/device.h b/sys/compat/linuxkpi/common/include/linux/device.h
new file mode 100644
index 000000000000..3459a5c4b68d
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/device.h
@@ -0,0 +1,424 @@
+/*-
+ * 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_DEVICE_H_
+#define _LINUX_DEVICE_H_
+
+#include <linux/types.h>
+#include <linux/kobject.h>
+#include <linux/list.h>
+#include <linux/compiler.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/workqueue.h>
+#include <linux/sysfs.h>
+#include <linux/kdev_t.h>
+#include <asm/atomic.h>
+
+#include <sys/bus.h>
+
+enum irqreturn { IRQ_NONE = 0, IRQ_HANDLED, IRQ_WAKE_THREAD, };
+typedef enum irqreturn irqreturn_t;
+
+struct class {
+ const char *name;
+ struct module *owner;
+ struct kobject kobj;
+ devclass_t bsdclass;
+ void (*class_release)(struct class *class);
+ void (*dev_release)(struct device *dev);
+ char * (*devnode)(struct device *dev, umode_t *mode);
+};
+
+struct device {
+ struct device *parent;
+ struct list_head irqents;
+ device_t bsddev;
+ dev_t devt;
+ struct class *class;
+ void (*release)(struct device *dev);
+ struct kobject kobj;
+ uint64_t *dma_mask;
+ void *driver_data;
+ unsigned int irq;
+ unsigned int msix;
+ unsigned int msix_max;
+};
+
+extern struct device linux_rootdev;
+extern struct kobject class_root;
+
+struct class_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct class *, struct class_attribute *, char *);
+ ssize_t (*store)(struct class *, struct class_attribute *, const char *, size_t);
+ const void *(*namespace)(struct class *, const struct class_attribute *);
+};
+
+#define CLASS_ATTR(_name, _mode, _show, _store) \
+ struct class_attribute class_attr_##_name = \
+ { { #_name, NULL, _mode }, _show, _store }
+
+struct device_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct device *,
+ struct device_attribute *, char *);
+ ssize_t (*store)(struct device *,
+ struct device_attribute *, const char *,
+ size_t);
+};
+
+#define DEVICE_ATTR(_name, _mode, _show, _store) \
+ struct device_attribute dev_attr_##_name = \
+ { { #_name, NULL, _mode }, _show, _store }
+
+/* Simple class attribute that is just a static string */
+struct class_attribute_string {
+ struct class_attribute attr;
+ char *str;
+};
+
+static inline ssize_t
+show_class_attr_string(struct class *class,
+ struct class_attribute *attr, char *buf)
+{
+ struct class_attribute_string *cs;
+ cs = container_of(attr, struct class_attribute_string, attr);
+ return snprintf(buf, PAGE_SIZE, "%s\n", cs->str);
+}
+
+/* Currently read-only only */
+#define _CLASS_ATTR_STRING(_name, _mode, _str) \
+ { __ATTR(_name, _mode, show_class_attr_string, NULL), _str }
+#define CLASS_ATTR_STRING(_name, _mode, _str) \
+ struct class_attribute_string class_attr_##_name = \
+ _CLASS_ATTR_STRING(_name, _mode, _str)
+
+#define dev_err(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
+#define dev_warn(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
+#define dev_info(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
+#define dev_printk(lvl, dev, fmt, ...) \
+ device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
+
+static inline void *
+dev_get_drvdata(struct device *dev)
+{
+
+ return dev->driver_data;
+}
+
+static inline void
+dev_set_drvdata(struct device *dev, void *data)
+{
+
+ dev->driver_data = data;
+}
+
+static inline struct device *
+get_device(struct device *dev)
+{
+
+ if (dev)
+ kobject_get(&dev->kobj);
+
+ return (dev);
+}
+
+static inline char *
+dev_name(const struct device *dev)
+{
+
+ return kobject_name(&dev->kobj);
+}
+
+#define dev_set_name(_dev, _fmt, ...) \
+ kobject_set_name(&(_dev)->kobj, (_fmt), ##__VA_ARGS__)
+
+static inline void
+put_device(struct device *dev)
+{
+
+ if (dev)
+ kobject_put(&dev->kobj);
+}
+
+static inline ssize_t
+class_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+ struct class_attribute *dattr;
+ ssize_t error;
+
+ dattr = container_of(attr, struct class_attribute, attr);
+ error = -EIO;
+ if (dattr->show)
+ error = dattr->show(container_of(kobj, struct class, kobj),
+ dattr, buf);
+ return (error);
+}
+
+static inline ssize_t
+class_store(struct kobject *kobj, struct attribute *attr, const char *buf,
+ size_t count)
+{
+ struct class_attribute *dattr;
+ ssize_t error;
+
+ dattr = container_of(attr, struct class_attribute, attr);
+ error = -EIO;
+ if (dattr->store)
+ error = dattr->store(container_of(kobj, struct class, kobj),
+ dattr, buf, count);
+ return (error);
+}
+
+static inline void
+class_release(struct kobject *kobj)
+{
+ struct class *class;
+
+ class = container_of(kobj, struct class, kobj);
+ if (class->class_release)
+ class->class_release(class);
+}
+
+static struct sysfs_ops class_sysfs = {
+ .show = class_show,
+ .store = class_store,
+};
+static struct kobj_type class_ktype = {
+ .release = class_release,
+ .sysfs_ops = &class_sysfs
+};
+
+static inline int
+class_register(struct class *class)
+{
+
+ class->bsdclass = devclass_create(class->name);
+ kobject_init(&class->kobj, &class_ktype);
+ kobject_set_name(&class->kobj, class->name);
+ kobject_add(&class->kobj, &class_root, class->name);
+
+ return (0);
+}
+
+static inline void
+class_unregister(struct class *class)
+{
+
+ kobject_put(&class->kobj);
+}
+
+static inline void
+device_release(struct kobject *kobj)
+{
+ struct device *dev;
+
+ dev = container_of(kobj, struct device, kobj);
+ /* This is the precedence defined by linux. */
+ if (dev->release)
+ dev->release(dev);
+ else if (dev->class && dev->class->dev_release)
+ dev->class->dev_release(dev);
+}
+
+static inline ssize_t
+dev_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+ struct device_attribute *dattr;
+ ssize_t error;
+
+ dattr = container_of(attr, struct device_attribute, attr);
+ error = -EIO;
+ if (dattr->show)
+ error = dattr->show(container_of(kobj, struct device, kobj),
+ dattr, buf);
+ return (error);
+}
+
+static inline ssize_t
+dev_store(struct kobject *kobj, struct attribute *attr, const char *buf,
+ size_t count)
+{
+ struct device_attribute *dattr;
+ ssize_t error;
+
+ dattr = container_of(attr, struct device_attribute, attr);
+ error = -EIO;
+ if (dattr->store)
+ error = dattr->store(container_of(kobj, struct device, kobj),
+ dattr, buf, count);
+ return (error);
+}
+
+static struct sysfs_ops dev_sysfs = { .show = dev_show, .store = dev_store, };
+static struct kobj_type dev_ktype = {
+ .release = device_release,
+ .sysfs_ops = &dev_sysfs
+};
+
+/*
+ * Devices are registered and created for exporting to sysfs. create
+ * implies register and register assumes the device fields have been
+ * setup appropriately before being called.
+ */
+static inline int
+device_register(struct device *dev)
+{
+ device_t bsddev;
+ int unit;
+
+ bsddev = NULL;
+ if (dev->devt) {
+ unit = MINOR(dev->devt);
+ bsddev = devclass_get_device(dev->class->bsdclass, unit);
+ } else
+ unit = -1;
+ if (bsddev == NULL)
+ bsddev = device_add_child(dev->parent->bsddev,
+ dev->class->kobj.name, unit);
+ if (bsddev) {
+ if (dev->devt == 0)
+ dev->devt = makedev(0, device_get_unit(bsddev));
+ device_set_softc(bsddev, dev);
+ }
+ dev->bsddev = bsddev;
+ kobject_init(&dev->kobj, &dev_ktype);
+ kobject_add(&dev->kobj, &dev->class->kobj, dev_name(dev));
+
+ return (0);
+}
+
+static inline void
+device_unregister(struct device *dev)
+{
+ device_t bsddev;
+
+ bsddev = dev->bsddev;
+ mtx_lock(&Giant);
+ if (bsddev)
+ device_delete_child(device_get_parent(bsddev), bsddev);
+ mtx_unlock(&Giant);
+ put_device(dev);
+}
+
+struct device *device_create(struct class *class, struct device *parent,
+ dev_t devt, void *drvdata, const char *fmt, ...);
+
+static inline void
+device_destroy(struct class *class, dev_t devt)
+{
+ device_t bsddev;
+ int unit;
+
+ unit = MINOR(devt);
+ bsddev = devclass_get_device(class->bsdclass, unit);
+ if (bsddev)
+ device_unregister(device_get_softc(bsddev));
+}
+
+static inline void
+class_kfree(struct class *class)
+{
+
+ kfree(class);
+}
+
+static inline struct class *
+class_create(struct module *owner, const char *name)
+{
+ struct class *class;
+ int error;
+
+ class = kzalloc(sizeof(*class), M_WAITOK);
+ class->owner = owner;
+ class->name= name;
+ class->class_release = class_kfree;
+ error = class_register(class);
+ if (error) {
+ kfree(class);
+ return (NULL);
+ }
+
+ return (class);
+}
+
+static inline void
+class_destroy(struct class *class)
+{
+
+ if (class == NULL)
+ return;
+ class_unregister(class);
+}
+
+static inline int
+device_create_file(struct device *dev, const struct device_attribute *attr)
+{
+
+ if (dev)
+ return sysfs_create_file(&dev->kobj, &attr->attr);
+ return -EINVAL;
+}
+
+static inline void
+device_remove_file(struct device *dev, const struct device_attribute *attr)
+{
+
+ if (dev)
+ sysfs_remove_file(&dev->kobj, &attr->attr);
+}
+
+static inline int
+class_create_file(struct class *class, const struct class_attribute *attr)
+{
+
+ if (class)
+ return sysfs_create_file(&class->kobj, &attr->attr);
+ return -EINVAL;
+}
+
+static inline void
+class_remove_file(struct class *class, const struct class_attribute *attr)
+{
+
+ if (class)
+ sysfs_remove_file(&class->kobj, &attr->attr);
+}
+
+static inline int dev_to_node(struct device *dev)
+{
+ return -1;
+}
+
+char *kvasprintf(gfp_t, const char *, va_list);
+char *kasprintf(gfp_t, const char *, ...);
+
+#endif /* _LINUX_DEVICE_H_ */