1 /***************************************************************************/ /**
2 * @file
3 * @brief
4 *******************************************************************************
5 * # License
6 * <b>Copyright 2019 Silicon Laboratories Inc. www.silabs.com</b>
7 *******************************************************************************
8 *
9 * SPDX-License-Identifier: Zlib
10 *
11 * The licensor of this software is Silicon Laboratories Inc.
12 *
13 * This software is provided 'as-is', without any express or implied
14 * warranty. In no event will the authors be held liable for any damages
15 * arising from the use of this software.
16 *
17 * Permission is granted to anyone to use this software for any purpose,
18 * including commercial applications, and to alter it and redistribute it
19 * freely, subject to the following restrictions:
20 *
21 * 1. The origin of this software must not be misrepresented; you must not
22 * claim that you wrote the original software. If you use this software
23 * in a product, an acknowledgment in the product documentation would be
24 * appreciated but is not required.
25 * 2. Altered source versions must be plainly marked as such, and must not be
26 * misrepresented as being the original software.
27 * 3. This notice may not be removed or altered from any source distribution.
28 *
29 ******************************************************************************/
30 #include "sl_si91x_host_interface.h"
31 #include <stdlib.h>
32 #include <stddef.h>
33 #include <string.h>
34 #include "cmsis_os2.h"
35 #include <string.h>
36 extern osMutexId_t malloc_free_mutex;
37 sl_status_t sl_si91x_host_init_buffer_manager(void);
38 sl_status_t sl_si91x_host_deinit_buffer_manager(void);
39 sl_status_t sl_si91x_host_allocate_buffer(sl_wifi_buffer_t **buffer,
40 sl_wifi_buffer_type_t type,
41 uint32_t buffer_size,
42 uint32_t wait_duration_ms);
43 void *sl_si91x_host_get_buffer_data(sl_wifi_buffer_t *buffer, uint16_t offset, uint16_t *data_length);
44 void sl_si91x_host_free_buffer(sl_wifi_buffer_t *buffer);
45
sl_si91x_host_init_buffer_manager(void)46 sl_status_t sl_si91x_host_init_buffer_manager(void)
47 {
48 if (malloc_free_mutex == NULL) {
49 malloc_free_mutex = osMutexNew(NULL);
50 }
51 return SL_STATUS_OK;
52 }
53
sl_si91x_host_deinit_buffer_manager(void)54 sl_status_t sl_si91x_host_deinit_buffer_manager(void)
55 {
56 if (malloc_free_mutex != NULL) {
57 osMutexDelete(malloc_free_mutex);
58 malloc_free_mutex = NULL;
59 }
60 return SL_STATUS_OK;
61 }
62
sl_si91x_host_allocate_buffer(sl_wifi_buffer_t ** buffer,sl_wifi_buffer_type_t type,uint32_t buffer_size,uint32_t wait_duration_ms)63 sl_status_t sl_si91x_host_allocate_buffer(sl_wifi_buffer_t **buffer,
64 sl_wifi_buffer_type_t type,
65 uint32_t buffer_size,
66 uint32_t wait_duration_ms)
67 {
68 (void)type;
69 osMutexAcquire(malloc_free_mutex, 0xFFFFFFFFUL);
70 uint32_t start = osKernelGetTickCount();
71 sl_wifi_buffer_t *temp = NULL;
72 do {
73 temp = (sl_wifi_buffer_t *)malloc(buffer_size + sizeof(*temp));
74 if (temp != NULL) {
75 break;
76 } else {
77 osDelay(1);
78 }
79 } while ((osKernelGetTickCount() - start) < wait_duration_ms);
80
81 osMutexRelease(malloc_free_mutex);
82 if (temp == NULL) {
83 return SL_STATUS_ALLOCATION_FAILED;
84 }
85 temp->length = buffer_size;
86 temp->node.node = NULL;
87 *buffer = temp;
88 return SL_STATUS_OK;
89 }
90
sl_si91x_host_get_buffer_data(sl_wifi_buffer_t * buffer,uint16_t offset,uint16_t * data_length)91 void *sl_si91x_host_get_buffer_data(sl_wifi_buffer_t *buffer, uint16_t offset, uint16_t *data_length)
92 {
93 if (offset >= buffer->length) {
94 return NULL;
95 }
96 if (data_length) {
97 *data_length = (uint16_t)(buffer->length) - offset;
98 }
99 return (void *)&buffer->data[offset];
100 }
101
sl_si91x_host_free_buffer(sl_wifi_buffer_t * buffer)102 void sl_si91x_host_free_buffer(sl_wifi_buffer_t *buffer)
103 {
104 if (buffer == NULL) {
105 return;
106 }
107 osMutexAcquire(malloc_free_mutex, 0xFFFFFFFFUL);
108 free((void *)buffer);
109 osMutexRelease(malloc_free_mutex);
110 }
111
