1 /* ----------------------------------------------------------------------------
2 * Copyright (c) Huawei Technologies Co., Ltd. 2021-2021. All rights reserved.
3 * Description: LiteOS USB Driver Config Data Stream HeadFile
4 * Author: Yannik Li
5 * Create: 2021-02-21
6 * Redistribution and use in source and binary forms, with or without modification,
7 * are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 * conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11 * of conditions and the following disclaimer in the documentation and/or other materials
12 * provided with the distribution.
13 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
14 * to endorse or promote products derived from this software without specific prior written
15 * permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
18 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
20 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
21 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
25 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
26 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 * --------------------------------------------------------------------------- */
28 /* ----------------------------------------------------------------------------
29 * Notice of Export Control Law
30 * ===============================================
31 * Huawei LiteOS may be subject to applicable export control laws and regulations, which might
32 * include those applicable to Huawei LiteOS of U.S. and the country in which you are located.
33 * Import, export and usage of Huawei LiteOS in any manner by you shall be in compliance with such
34 * applicable export control laws and regulations.
35 * --------------------------------------------------------------------------- */
36
37 #ifndef LITEOS_USB_OBJ_H
38 #define LITEOS_USB_OBJ_H
39
40 /************************************************************************************
41 * Included Files
42 ************************************************************************************/
43
44 #include "obj_ref.h"
45 #include <linux/spinlock.h>
46 #include <linux/list.h>
47
48 /************************************************************************************
49 * Public Functions
50 ************************************************************************************/
51
52 struct usb_obj {
53 const char *name;
54 struct list_head entry;
55 struct usb_obj *parent;
56 struct list_head children;
57 spinlock_t lock;
58 struct obj_ref ref;
59 struct list_head objres_head;
60 spinlock_t objres_lock;
61 void (*release)(struct usb_obj *obj);
62 };
63
64 typedef int (*usbobj_match_t)(struct usb_obj *obj, void *match_data);
65
66 extern int usbobj_add(struct usb_obj *obj, struct usb_obj *parent);
67 extern int usbobj_remove(struct usb_obj *obj);
68 extern struct usb_obj *usbobj_find(struct usb_obj *obj, usbobj_match_t match, void *match_data);
69 extern int usbobj_init(struct usb_obj *obj, const char *name, void (*release)(struct usb_obj *obj));
70 extern void usbobj_get(struct usb_obj *obj);
71 extern void usbobj_put(struct usb_obj *obj);
72 extern void usbobj_for_each_child(struct usb_obj *obj,
73 usbobj_match_t match, void *match_data,
74 void (*fn)(struct usb_obj *, void *),
75 void *data);
76 extern void objres_release_all(struct usb_obj *obj);
77
78 extern void *usbm_malloc(struct usb_obj *obj, size_t size);
79 extern void *usbm_zalloc(struct usb_obj *obj, size_t size);
80 extern void usbm_free(struct usb_obj *obj, void *p);
81 extern char *usbm_strdup(struct usb_obj *obj, const char *s);
82
usbobj_default_match(struct usb_obj * obj,void * match_data)83 static inline int usbobj_default_match(struct usb_obj *obj, void *match_data)
84 {
85 return !strcmp(obj->name, (char *)match_data);
86 }
87
88 /* the obj has to be the first memter */
usbobj_default_release(struct usb_obj * obj)89 static inline void usbobj_default_release(struct usb_obj *obj)
90 {
91 usbm_free(obj->parent, obj);
92 }
93
94 #endif /* LITEOS_USB_OBJ_H */
95