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 * $FreeBSD$ 30 */ 31 #ifndef _LINUXKPI_LINUX_KOBJECT_H_ 32 #define _LINUXKPI_LINUX_KOBJECT_H_ 33 34 #include <machine/stdarg.h> 35 36 #include <linux/kernel.h> 37 #include <linux/kref.h> 38 #include <linux/list.h> 39 #include <linux/slab.h> 40 41 struct kobject; 42 struct sysctl_oid; 43 44 #define KOBJ_CHANGE 0x01 45 46 struct kobj_type { 47 void (*release)(struct kobject *kobj); 48 const struct sysfs_ops *sysfs_ops; 49 struct attribute **default_attrs; 50 const struct attribute_group **default_groups; 51 }; 52 53 extern const struct kobj_type linux_kfree_type; 54 55 struct kobject { 56 struct kobject *parent; 57 char *name; 58 struct kref kref; 59 const struct kobj_type *ktype; 60 struct list_head entry; 61 struct sysctl_oid *oidp; 62 }; 63 64 extern struct kobject *mm_kobj; 65 66 struct attribute { 67 const char *name; 68 struct module *owner; 69 mode_t mode; 70 }; 71 72 extern const struct sysfs_ops kobj_sysfs_ops; 73 74 struct kobj_attribute { 75 struct attribute attr; 76 ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr, 77 char *buf); 78 ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr, 79 const char *buf, size_t count); 80 }; 81 82 static inline void 83 kobject_init(struct kobject *kobj, const struct kobj_type *ktype) 84 { 85 86 kref_init(&kobj->kref); 87 INIT_LIST_HEAD(&kobj->entry); 88 kobj->ktype = ktype; 89 kobj->oidp = NULL; 90 } 91 92 void linux_kobject_release(struct kref *kref); 93 94 static inline void 95 kobject_put(struct kobject *kobj) 96 { 97 98 if (kobj) 99 kref_put(&kobj->kref, linux_kobject_release); 100 } 101 102 static inline struct kobject * 103 kobject_get(struct kobject *kobj) 104 { 105 106 if (kobj) 107 kref_get(&kobj->kref); 108 return kobj; 109 } 110 111 struct kobject *kobject_create(void); 112 int kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list); 113 int kobject_add(struct kobject *kobj, struct kobject *parent, 114 const char *fmt, ...); 115 116 static inline struct kobject * 117 kobject_create_and_add(const char *name, struct kobject *parent) 118 { 119 struct kobject *kobj; 120 121 kobj = kobject_create(); 122 if (kobj == NULL) 123 return (NULL); 124 if (kobject_add(kobj, parent, "%s", name) == 0) 125 return (kobj); 126 kobject_put(kobj); 127 128 return (NULL); 129 } 130 131 static inline void 132 kobject_del(struct kobject *kobj __unused) 133 { 134 } 135 136 static inline char * 137 kobject_name(const struct kobject *kobj) 138 { 139 140 return kobj->name; 141 } 142 143 int kobject_set_name(struct kobject *kobj, const char *fmt, ...); 144 int kobject_init_and_add(struct kobject *kobj, const struct kobj_type *ktype, 145 struct kobject *parent, const char *fmt, ...); 146 147 static __inline void 148 kobject_uevent_env(struct kobject *kobj, int action, char *envp[]) 149 { 150 151 /* 152 * iwlwifi(4) sends an INACCESSIBLE event when it detects that the card 153 * (pice endpoint) is gone and it attempts a removal cleanup. 154 * Not sure if we do anything related to udev/sysfs at the moment or 155 * need a shortcut or simply ignore it (for now). 156 */ 157 } 158 159 #endif /* _LINUXKPI_LINUX_KOBJECT_H_ */ 160