92ddc1b7e78318a6d0cfa58cb22daae8846bd646
1 /**
2 * @file rm_osal.h
3 *
4 * @brief
5 * This is the sample OS Adaptation layer which is used by the RM low level
6 * driver. The OSAL layer can be ported in either of the following
7 * manners to a native OS:
8 *
9 * <b> Approach 1: </b>
10 * @n Use Prebuilt Libraries
11 * - Ensure that the provide an implementation of all
12 * Osal_XXX API for their native OS.
13 * - Link the prebuilt libraries with their application.
14 * - Refer to the "example" directory for an example of this
15 * @n <b> Pros: </b>
16 * - Customers can reuse prebuilt TI provided libraries
17 * @n <b> Cons: </b>
18 * - Level of indirection in the API to get to the actual OS call
19 *
20 * <b> Approach 2: </b>
21 * @n Rebuilt Library
22 * - Create a copy of this file and modify it to directly
23 * inline the native OS calls
24 * - Rebuild the RM low level drivver library; ensure that the Include
25 * path points to the directory where the copy of this file
26 * has been provided.
27 * - Please refer to the "test" directory for an example of this
28 * @n <b> Pros: </b>
29 * - Optimizations can be done to remove the level of indirection
30 * @n <b> Cons: </b>
31 * - RM LLD Libraries need to be rebuilt by the customer.
32 *
33 * \par
34 * NOTE:
35 * (C) Copyright 2012 Texas Instruments, Inc.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 *
41 * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 *
44 * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in the
46 * documentation and/or other materials provided with the
47 * distribution.
48 *
49 * Neither the name of Texas Instruments Incorporated nor the names of
50 * its contributors may be used to endorse or promote products derived
51 * from this software without specific prior written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
54 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
55 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
56 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
57 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
58 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
59 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
60 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
61 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
62 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
63 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *
65 * \par
66 */
67 #ifndef __RM_OSAL_H__
68 #define __RM_OSAL_H__
70 /** @addtogroup RM_LLD_OSAL
71 @{ */
73 /**********************************************************************
74 ************************* Extern Declarations ************************
75 **********************************************************************/
77 /* #include <string.h> is here because there used to be
78 * memcpy/memset prototypes here. This #include prevents warnings in
79 * other code that unintentionally worked because of these prototypes
80 */
81 #include <string.h>
83 extern void* Osal_rmMalloc (uint32_t num_bytes, bool shared);
84 extern void Osal_rmFree (void *ptr, uint32_t size, bool shared);
85 extern void* Osal_rmCsEnter (void);
86 extern void Osal_rmCsExit (void *CsHandle);
87 extern void* Osal_rmMtCsEnter (void);
88 extern void Osal_rmMtCsExit (void *CsHandle);
89 extern void Osal_rmLog (char *fmt, ... );
90 extern void Osal_rmBeginMemAccess (void *ptr, uint32_t size);
91 extern void Osal_rmEndMemAccess (void *ptr, uint32_t size);
93 /**
94 * @brief The macro is used by the RM LLD to allocate memory of specified
95 * size
96 *
97 * <b> Prototype: </b>
98 * The following is the C prototype for the expected OSAL API.
99 *
100 * @verbatim
101 void* Osal_rmMalloc (uint32_t numBytes)
102 @endverbatim
103 *
104 * <b> Parameter </b>
105 * @n Number of bytes to be allocated
106 *
107 * <b> Parameter </b>
108 * @n If true the memory should could from shared memory
109 *
110 * <b> Return Value </b>
111 * @n Pointer to the allocated block size
112 */
114 #define Rm_osalMalloc Osal_rmMalloc
116 /**
117 * @brief The macro is used by the RM LLD to free a allocated block of
118 * memory
119 *
120 * <b> Prototype: </b>
121 * The following is the C prototype for the expected OSAL API.
122 *
123 * @verbatim
124 void Osal_rmFree (void *ptr, uint32_t size)
125 @endverbatim
126 *
127 * <b> Parameter </b>
128 * @n Pointer to the block of memory to be cleaned up.
129 * @n Size of the allocated memory which is being freed.
130 *
131 * <b> Return Value </b>
132 * @n Not applicable.
133 */
135 #define Rm_osalFree Osal_rmFree
137 /**
138 * @brief The macro is used by the RM LLD to provide critical sections to
139 * protect global and shared variables from
140 *
141 * access from multiple cores
142 * and
143 * access from multiple threads on single core
144 *
145 * <b> Prototype: </b>
146 * The following is the C prototype for the expected OSAL API.
147 *
148 * @verbatim
149 void* Osal_rmCsEnter (void)
150 @endverbatim
151 *
152 * <b> Parameter </b>
153 * @n None.
154 *
155 * <b> Return Value </b>
156 * @n Handle used to lock critical section.
157 */
158 #define Rm_osalCsEnter Osal_rmCsEnter
160 /**
161 * @brief The macro is used by the RM LLD to exit a critical section
162 * protected using Osal_rmCsEnter() API.
163 *
164 * <b> Prototype: </b>
165 * The following is the C prototype for the expected OSAL API.
166 *
167 * @verbatim
168 void Osal_rmCsExit (void *CsHandle)
169 @endverbatim
170 *
171 * <b> Parameter </b>
172 * @n Handle for unlocking critical section.
173 *
174 * <b> Return Value </b>
175 * @n Not applicable.
176 */
177 #define Rm_osalCsExit Osal_rmCsExit
179 /**
180 * @brief The macro is used by the RM LLD to provide critical sections to
181 * protect global and shared variables from
182 *
183 * access from multiple threads on single core
184 *
185 * <b> Prototype: </b>
186 * The following is the C prototype for the expected OSAL API.
187 *
188 * @verbatim
189 void* Osal_rmMtCsEnter (void)
190 @endverbatim
191 *
192 * <b> Parameter </b>
193 * @n None.
194 *
195 * <b> Return Value </b>
196 * @n Handle used to lock critical section.
197 */
198 #define Rm_osalMtCsEnter Osal_rmMtCsEnter
200 /**
201 * @brief The macro is used by the RM LLD to exit a critical section
202 * protected using Osal_rmMtCsEnter() API.
203 *
204 * <b> Prototype: </b>
205 * The following is the C prototype for the expected OSAL API.
206 *
207 * @verbatim
208 void Osal_rmMtCsExit (void *CsHandle)
209 @endverbatim
210 *
211 * <b> Parameter </b>
212 * @n Handle for unlocking critical section.
213 *
214 * <b> Return Value </b>
215 * @n Not applicable.
216 */
217 #define Rm_osalMtCsExit Osal_rmMtCsExit
219 /**
220 * @brief The macro is used by the RM LLD to log various
221 * messages.
222 *
223 * <b> Prototype: </b>
224 * The following is the C prototype for the expected OSAL API.
225 *
226 * @verbatim
227 void Osal_rmLog( char *fmt, ... )
228 @endverbatim
229 *
230 * <b> Parameter </b>
231 * @n printf-style format string
232 *
233 * <b> Return Value </b>
234 * @n Not applicable.
235 */
236 #define Rm_osalLog Osal_rmLog
238 /**
239 * @brief The macro is used by the RM LLD to indicate that a block
240 * of memory is about to be accessed. If the memory block is cached then
241 * this indicates that the application would need to ensure that the cache
242 * is updated with the data from the actual memory.
243 *
244 * <b> Prototype: </b>
245 * The following is the C prototype for the expected OSAL API.
246 *
247 * @verbatim
248 void Osal_rmBeginMemAccess (void *ptr, uint32_t size)
249 @endverbatim
250 *
251 * <b> Parameter </b>
252 * @n Address of memory block.
253 * @n Size of memory block.
254 *
255 * <b> Return Value </b>
256 * @n Not applicable.
257 */
258 #define Rm_osalBeginMemAccess Osal_rmBeginMemAccess
260 /**
261 * @brief The macro is used by the RM LLD to indicate that the block of
262 * memory has finished being accessed. If the memory block is cached then the
263 * application would need to ensure that the contents of the cache are updated
264 * immediately to the actual memory.
265 *
266 * <b> Prototype: </b>
267 * The following is the C prototype for the expected OSAL API.
268 *
269 * @verbatim
270 void Osal_rmEndMemAccess (void *ptr, uint32_t size)
271 @endverbatim
272 *
273 * <b> Parameter </b>
274 * @n Address of memory block.
275 * @n Size of memory block.
276 *
277 * <b> Return Value </b>
278 * @n Not applicable.
279 */
280 #define Rm_osalEndMemAccess Osal_rmEndMemAccess
282 /**
283 @}
284 */
285 #endif /* __RM_OSAL_H__ */