1/* ----------------------------------------------------------------------------
2 * Copyright (c) Huawei Technologies Co., Ltd. 2017-2019. All rights reserved.
3 * Description: LiteOS USB Driver Composite Devices
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#include "f_common.h"
38
39#ifdef __cplusplus
40#if __cplusplus
41//extern "C" {
42#endif /* __cplusplus */
43#endif /* __cplusplus */
44
45struct obj_res {
46  struct list_head entry;
47  uint8_t data[0];
48};
49
50void *objres_alloc(size_t size)
51{
52  size_t total_size;
53  struct obj_res *res;
54
55  total_size = sizeof(struct obj_res) + size;
56  res = malloc(total_size);
57  if (res == NULL)
58    {
59      return NULL;
60    }
61
62  INIT_LIST_HEAD(&res->entry);
63  return res->data;
64}
65
66void objres_free(void *res)
67{
68  if (res)
69    {
70      struct obj_res *objRes = container_of(res, struct obj_res, data);
71      free(objRes);
72    }
73}
74
75void objres_add(struct usb_obj *obj, void *res)
76{
77  struct obj_res *objRes = container_of(res, struct obj_res, data);
78  uint32_t flags;
79
80  spin_lock_irqsave(&obj->objres_lock, flags);
81  list_add_tail(&objRes->entry, &obj->objres_head);
82  spin_unlock_irqrestore(&obj->objres_lock, flags);
83}
84
85static struct obj_res *objres_find(struct usb_obj *obj, void *res)
86{
87  struct obj_res *rc;
88
89  list_for_each_entry_reverse(rc, &obj->objres_head, entry)
90    {
91      if (rc->data != res)
92        {
93          continue;
94        }
95      return rc;
96    }
97
98  return NULL;
99}
100
101int objres_remove(struct usb_obj *obj, void *res)
102{
103  struct obj_res *rc;
104  uint32_t flags;
105
106  spin_lock_irqsave(&obj->objres_lock, flags);
107  rc = objres_find(obj, res);
108  if (rc)
109    {
110      list_del_init(&rc->entry);
111    }
112  spin_unlock_irqrestore(&obj->objres_lock, flags);
113
114  return rc ? 0 : -1;
115}
116
117void objres_release_all(struct usb_obj *obj)
118{
119  struct obj_res *res, *tmp;
120  uint32_t flags;
121
122  spin_lock_irqsave(&obj->objres_lock, flags);
123  list_for_each_entry_safe_reverse(res, tmp, &obj->objres_head, entry)
124    {
125      list_del(&res->entry);
126      free(res);
127    }
128  spin_unlock_irqrestore(&obj->objres_lock, flags);
129}
130
131void *usbm_malloc(struct usb_obj *obj, size_t size)
132{
133  void *res;
134
135  if (!size)
136    {
137      return NULL;
138    }
139
140  res = objres_alloc(size);
141  if (res == NULL)
142    {
143      return NULL;
144    }
145
146  objres_add(obj, res);
147  return res;
148}
149
150void *usbm_zalloc(struct usb_obj *obj, size_t size)
151{
152  void *data;
153
154  data = usbm_malloc(obj, size);
155  if (data)
156    {
157      (void)memset_s(data, size, 0, size);
158    }
159  return data;
160}
161
162void usbm_free(struct usb_obj *obj, void *p)
163{
164  int ret;
165
166  if (p == NULL)
167    {
168      return;
169    }
170
171  ret = objres_remove(obj, p);
172  if (!ret)
173    {
174      objres_free(p);
175    }
176}
177
178char *usbm_strdup(struct usb_obj *obj, const char *s)
179{
180  size_t size;
181  char *buf;
182
183  if (s == NULL)
184    {
185      return NULL;
186    }
187
188  size = strlen(s) + 1;
189  buf = usbm_malloc(obj, size);
190  if (buf)
191    {
192      (void)memcpy_s(buf, size, s, size);
193    }
194  return buf;
195}
196
197#ifdef __cplusplus
198#if __cplusplus
199//}
200#endif /* __cplusplus */
201#endif /* __cplusplus */
202