49557d2481
kmalloc() call. Make function global instead of static inline to fix compiler warnings about passing variable argument lists to inline functions. MFC after: 1 week Sponsored by: Mellanox Technologies
423 lines
10 KiB
C
423 lines
10 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _LINUX_DEVICE_H_
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#define _LINUX_DEVICE_H_
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#include <linux/types.h>
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#include <linux/kobject.h>
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#include <linux/list.h>
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#include <linux/compiler.h>
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#include <linux/types.h>
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#include <linux/module.h>
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#include <linux/workqueue.h>
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#include <linux/sysfs.h>
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#include <linux/kdev_t.h>
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#include <asm/atomic.h>
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#include <sys/bus.h>
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enum irqreturn { IRQ_NONE = 0, IRQ_HANDLED, IRQ_WAKE_THREAD, };
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typedef enum irqreturn irqreturn_t;
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struct class {
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const char *name;
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struct module *owner;
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struct kobject kobj;
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devclass_t bsdclass;
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void (*class_release)(struct class *class);
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void (*dev_release)(struct device *dev);
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char * (*devnode)(struct device *dev, umode_t *mode);
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};
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struct device {
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struct device *parent;
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struct list_head irqents;
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device_t bsddev;
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dev_t devt;
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struct class *class;
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void (*release)(struct device *dev);
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struct kobject kobj;
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uint64_t *dma_mask;
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void *driver_data;
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unsigned int irq;
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unsigned int msix;
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unsigned int msix_max;
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};
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extern struct device linux_rootdev;
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extern struct kobject class_root;
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struct class_attribute {
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struct attribute attr;
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ssize_t (*show)(struct class *, struct class_attribute *, char *);
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ssize_t (*store)(struct class *, struct class_attribute *, const char *, size_t);
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const void *(*namespace)(struct class *, const struct class_attribute *);
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};
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#define CLASS_ATTR(_name, _mode, _show, _store) \
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struct class_attribute class_attr_##_name = \
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{ { #_name, NULL, _mode }, _show, _store }
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struct device_attribute {
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struct attribute attr;
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ssize_t (*show)(struct device *,
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struct device_attribute *, char *);
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ssize_t (*store)(struct device *,
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struct device_attribute *, const char *,
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size_t);
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};
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#define DEVICE_ATTR(_name, _mode, _show, _store) \
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struct device_attribute dev_attr_##_name = \
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{ { #_name, NULL, _mode }, _show, _store }
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/* Simple class attribute that is just a static string */
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struct class_attribute_string {
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struct class_attribute attr;
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char *str;
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};
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static inline ssize_t
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show_class_attr_string(struct class *class,
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struct class_attribute *attr, char *buf)
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{
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struct class_attribute_string *cs;
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cs = container_of(attr, struct class_attribute_string, attr);
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return snprintf(buf, PAGE_SIZE, "%s\n", cs->str);
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}
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/* Currently read-only only */
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#define _CLASS_ATTR_STRING(_name, _mode, _str) \
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{ __ATTR(_name, _mode, show_class_attr_string, NULL), _str }
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#define CLASS_ATTR_STRING(_name, _mode, _str) \
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struct class_attribute_string class_attr_##_name = \
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_CLASS_ATTR_STRING(_name, _mode, _str)
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#define dev_err(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
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#define dev_warn(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
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#define dev_info(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
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#define dev_printk(lvl, dev, fmt, ...) \
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device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
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static inline void *
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dev_get_drvdata(struct device *dev)
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{
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return dev->driver_data;
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}
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static inline void
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dev_set_drvdata(struct device *dev, void *data)
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{
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dev->driver_data = data;
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}
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static inline struct device *
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get_device(struct device *dev)
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{
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if (dev)
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kobject_get(&dev->kobj);
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return (dev);
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}
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static inline char *
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dev_name(const struct device *dev)
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{
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return kobject_name(&dev->kobj);
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}
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#define dev_set_name(_dev, _fmt, ...) \
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kobject_set_name(&(_dev)->kobj, (_fmt), ##__VA_ARGS__)
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static inline void
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put_device(struct device *dev)
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{
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if (dev)
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kobject_put(&dev->kobj);
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}
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static inline ssize_t
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class_show(struct kobject *kobj, struct attribute *attr, char *buf)
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{
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struct class_attribute *dattr;
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ssize_t error;
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dattr = container_of(attr, struct class_attribute, attr);
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error = -EIO;
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if (dattr->show)
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error = dattr->show(container_of(kobj, struct class, kobj),
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dattr, buf);
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return (error);
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}
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static inline ssize_t
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class_store(struct kobject *kobj, struct attribute *attr, const char *buf,
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size_t count)
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{
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struct class_attribute *dattr;
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ssize_t error;
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dattr = container_of(attr, struct class_attribute, attr);
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error = -EIO;
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if (dattr->store)
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error = dattr->store(container_of(kobj, struct class, kobj),
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dattr, buf, count);
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return (error);
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}
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static inline void
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class_release(struct kobject *kobj)
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{
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struct class *class;
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class = container_of(kobj, struct class, kobj);
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if (class->class_release)
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class->class_release(class);
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}
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static struct sysfs_ops class_sysfs = {
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.show = class_show,
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.store = class_store,
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};
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static struct kobj_type class_ktype = {
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.release = class_release,
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.sysfs_ops = &class_sysfs
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};
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static inline int
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class_register(struct class *class)
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{
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class->bsdclass = devclass_create(class->name);
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kobject_init(&class->kobj, &class_ktype);
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kobject_set_name(&class->kobj, class->name);
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kobject_add(&class->kobj, &class_root, class->name);
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return (0);
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}
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static inline void
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class_unregister(struct class *class)
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{
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kobject_put(&class->kobj);
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}
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static inline void
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device_release(struct kobject *kobj)
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{
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struct device *dev;
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dev = container_of(kobj, struct device, kobj);
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/* This is the precedence defined by linux. */
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if (dev->release)
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dev->release(dev);
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else if (dev->class && dev->class->dev_release)
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dev->class->dev_release(dev);
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}
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static inline ssize_t
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dev_show(struct kobject *kobj, struct attribute *attr, char *buf)
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{
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struct device_attribute *dattr;
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ssize_t error;
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dattr = container_of(attr, struct device_attribute, attr);
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error = -EIO;
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if (dattr->show)
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error = dattr->show(container_of(kobj, struct device, kobj),
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dattr, buf);
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return (error);
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}
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static inline ssize_t
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dev_store(struct kobject *kobj, struct attribute *attr, const char *buf,
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size_t count)
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{
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struct device_attribute *dattr;
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ssize_t error;
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dattr = container_of(attr, struct device_attribute, attr);
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error = -EIO;
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if (dattr->store)
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error = dattr->store(container_of(kobj, struct device, kobj),
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dattr, buf, count);
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return (error);
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}
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static struct sysfs_ops dev_sysfs = { .show = dev_show, .store = dev_store, };
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static struct kobj_type dev_ktype = {
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.release = device_release,
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.sysfs_ops = &dev_sysfs
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};
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/*
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* Devices are registered and created for exporting to sysfs. create
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* implies register and register assumes the device fields have been
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* setup appropriately before being called.
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*/
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static inline int
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device_register(struct device *dev)
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{
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device_t bsddev;
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int unit;
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bsddev = NULL;
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if (dev->devt) {
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unit = MINOR(dev->devt);
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bsddev = devclass_get_device(dev->class->bsdclass, unit);
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} else
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unit = -1;
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if (bsddev == NULL)
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bsddev = device_add_child(dev->parent->bsddev,
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dev->class->kobj.name, unit);
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if (bsddev) {
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if (dev->devt == 0)
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dev->devt = makedev(0, device_get_unit(bsddev));
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device_set_softc(bsddev, dev);
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}
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dev->bsddev = bsddev;
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kobject_init(&dev->kobj, &dev_ktype);
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kobject_add(&dev->kobj, &dev->class->kobj, dev_name(dev));
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return (0);
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}
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static inline void
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device_unregister(struct device *dev)
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{
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device_t bsddev;
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bsddev = dev->bsddev;
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mtx_lock(&Giant);
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if (bsddev)
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device_delete_child(device_get_parent(bsddev), bsddev);
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mtx_unlock(&Giant);
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put_device(dev);
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}
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struct device *device_create(struct class *class, struct device *parent,
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dev_t devt, void *drvdata, const char *fmt, ...);
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static inline void
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device_destroy(struct class *class, dev_t devt)
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{
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device_t bsddev;
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int unit;
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unit = MINOR(devt);
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bsddev = devclass_get_device(class->bsdclass, unit);
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if (bsddev)
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device_unregister(device_get_softc(bsddev));
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}
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static inline void
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class_kfree(struct class *class)
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{
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kfree(class);
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}
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static inline struct class *
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class_create(struct module *owner, const char *name)
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{
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struct class *class;
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int error;
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class = kzalloc(sizeof(*class), M_WAITOK);
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class->owner = owner;
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class->name= name;
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class->class_release = class_kfree;
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error = class_register(class);
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if (error) {
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kfree(class);
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return (NULL);
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}
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return (class);
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}
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static inline void
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class_destroy(struct class *class)
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{
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if (class == NULL)
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return;
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class_unregister(class);
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}
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static inline int
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device_create_file(struct device *dev, const struct device_attribute *attr)
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{
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if (dev)
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return sysfs_create_file(&dev->kobj, &attr->attr);
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return -EINVAL;
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}
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static inline void
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device_remove_file(struct device *dev, const struct device_attribute *attr)
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{
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if (dev)
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sysfs_remove_file(&dev->kobj, &attr->attr);
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}
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static inline int
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class_create_file(struct class *class, const struct class_attribute *attr)
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{
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if (class)
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return sysfs_create_file(&class->kobj, &attr->attr);
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return -EINVAL;
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}
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static inline void
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class_remove_file(struct class *class, const struct class_attribute *attr)
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{
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if (class)
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sysfs_remove_file(&class->kobj, &attr->attr);
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}
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static inline int dev_to_node(struct device *dev)
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{
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return -1;
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}
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char *kvasprintf(gfp_t, const char *, va_list);
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char *kasprintf(gfp_t, const char *, ...);
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#endif /* _LINUX_DEVICE_H_ */
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