1/*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice unmodified, this list of conditions, and the following 13 * disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29#ifndef _LINUXKPI_LINUX_KOBJECT_H_ 30#define _LINUXKPI_LINUX_KOBJECT_H_ 31 32#include <machine/stdarg.h> 33 34#include <linux/kernel.h> 35#include <linux/kref.h> 36#include <linux/list.h> 37#include <linux/slab.h> 38#include <linux/spinlock.h> 39#include <linux/wait.h> 40#include <linux/workqueue.h> 41 42struct kobject; 43struct kset; 44struct sysctl_oid; 45 46#define KOBJ_CHANGE 0x01 47 48struct kobj_type { 49 void (*release)(struct kobject *kobj); 50 const struct sysfs_ops *sysfs_ops; 51 struct attribute **default_attrs; 52 const struct attribute_group **default_groups; 53}; 54 55extern const struct kobj_type linux_kfree_type; 56 57struct kobject { 58 struct kobject *parent; 59 char *name; 60 struct kref kref; 61 const struct kobj_type *ktype; 62 struct list_head entry; 63 struct sysctl_oid *oidp; 64 struct kset *kset; 65}; 66 67extern struct kobject *mm_kobj; 68 69struct attribute { 70 const char *name; 71 struct module *owner; 72 mode_t mode; 73}; 74 75extern const struct sysfs_ops kobj_sysfs_ops; 76 77struct kobj_attribute { 78 struct attribute attr; 79 ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, 80 char *buf); 81 ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, 82 const char *buf, size_t count); 83}; 84 85struct kset_uevent_ops { 86 /* TODO */ 87}; 88 89struct kset { 90 struct list_head list; 91 spinlock_t list_lock; 92 struct kobject kobj; 93 const struct kset_uevent_ops *uevent_ops; 94}; 95 96static inline void 97kobject_init(struct kobject *kobj, const struct kobj_type *ktype) 98{ 99 100 kref_init(&kobj->kref); 101 INIT_LIST_HEAD(&kobj->entry); 102 kobj->ktype = ktype; 103 kobj->oidp = NULL; 104} 105 106void linux_kobject_release(struct kref *kref); 107 108static inline void 109kobject_put(struct kobject *kobj) 110{ 111 112 if (kobj) 113 kref_put(&kobj->kref, linux_kobject_release); 114} 115 116static inline struct kobject * 117kobject_get(struct kobject *kobj) 118{ 119 120 if (kobj) 121 kref_get(&kobj->kref); 122 return kobj; 123} 124 125struct kobject *kobject_create(void); 126int kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list); 127int kobject_add(struct kobject *kobj, struct kobject *parent, 128 const char *fmt, ...); 129 130static inline struct kobject * 131kobject_create_and_add(const char *name, struct kobject *parent) 132{ 133 struct kobject *kobj; 134 135 kobj = kobject_create(); 136 if (kobj == NULL) 137 return (NULL); 138 if (kobject_add(kobj, parent, "%s", name) == 0) 139 return (kobj); 140 kobject_put(kobj); 141 142 return (NULL); 143} 144 145static inline void 146kobject_del(struct kobject *kobj __unused) 147{ 148} 149 150static inline char * 151kobject_name(const struct kobject *kobj) 152{ 153 154 return kobj->name; 155} 156 157int kobject_set_name(struct kobject *kobj, const char *fmt, ...); 158int kobject_init_and_add(struct kobject *kobj, const struct kobj_type *ktype, 159 struct kobject *parent, const char *fmt, ...); 160 161static __inline void 162kobject_uevent_env(struct kobject *kobj, int action, char *envp[]) 163{ 164 165 /* 166 * iwlwifi(4) sends an INACCESSIBLE event when it detects that the card 167 * (pice endpoint) is gone and it attempts a removal cleanup. 168 * Not sure if we do anything related to udev/sysfs at the moment or 169 * need a shortcut or simply ignore it (for now). 170 */ 171} 172 173void kset_init(struct kset *kset); 174int kset_register(struct kset *kset); 175void kset_unregister(struct kset *kset); 176struct kset * kset_create_and_add(const char *name, 177 const struct kset_uevent_ops *u, struct kobject *parent_kobj); 178 179static inline struct kset * 180to_kset(struct kobject *kobj) 181{ 182 if (kobj != NULL) 183 return container_of(kobj, struct kset, kobj); 184 else 185 return NULL; 186} 187 188static inline struct kset * 189kset_get(struct kset *kset) 190{ 191 if (kset != NULL) { 192 struct kobject *kobj; 193 194 kobj = kobject_get(&kset->kobj); 195 return to_kset(kobj); 196 } else { 197 return NULL; 198 } 199} 200 201static inline void 202kset_put(struct kset *kset) 203{ 204 if (kset != NULL) 205 kobject_put(&kset->kobj); 206} 207 208void linux_kobject_kfree_name(struct kobject *kobj); 209 210#endif /* _LINUXKPI_LINUX_KOBJECT_H_ */ 211