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1 | /******************** (C) COPYRIGHT 2006 STMicroelectronics ******************** |
1 | /******************** (C) COPYRIGHT 2008 STMicroelectronics ******************** |
2 | * File Name : 91x_dma.c |
2 | * File Name : 91x_dma.c |
3 | * Author : MCD Application Team |
3 | * Author : MCD Application Team |
- | 4 | * Version : V2.1 |
|
4 | * Date First Issued : 05/18/2006 : Version 1.0 |
5 | * Date : 12/22/2008 |
5 | * Description : This file provides all the DMA software functions |
6 | * Description : This file provides all the DMA firmware functions |
6 | * needed to access all DMA registers. |
7 | * needed to access all DMA registers. |
7 | ******************************************************************************** |
8 | ******************************************************************************** |
8 | * History:v 1.0 |
- | |
9 | * 05/22/2007 : Version 1.2 |
- | |
10 | * 05/24/2006 : Version 1.1 |
- | |
11 | * 05/18/2006 : Version 1.0 |
- | |
12 | ******************************************************************************** |
- | |
13 | * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
9 | * THE PRESENT SOFTWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
14 | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. |
10 | * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME. |
15 | * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, |
11 | * AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT, |
16 | * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE |
12 | * INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE |
17 | * CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING |
13 | * CONTENT OF SUCH SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING |
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48 | #define DMA_CacheChannel 0x40000000 |
44 | #define DMA_CacheChannel 0x40000000 |
49 | #define DMA_ChannelActive 0x00020000 |
45 | #define DMA_ChannelActive 0x00020000 |
50 | #define DMA_Enable 0x00000001 |
46 | #define DMA_Enable 0x00000001 |
51 | #define DMA_ChannelEnable 0x00000001 |
47 | #define DMA_ChannelEnable 0x00000001 |
Line -... | Line 48... | ||
- | 48 | ||
- | 49 | /*LLI Masks used for linked list's control word stucture*/ |
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- | 50 | ||
- | 51 | #define DMA_SrcIncrement_MASK 0xFBFFFFFF |
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- | 52 | #define DMA_DesIncrement_MASK 0xF7FFFFFF |
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- | 53 | #define DMA_CacheableAccess_MASK 0xEFFFFFFF |
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- | 54 | #define DMA_BufferableAccess_MASK 0xDFFFFFFF |
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- | 55 | #define DMA_PrivilegedAccess_MASK 0xBFFFFFFF |
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Line 52... | Line 56... | ||
52 | 56 | #define DMA_TCInterrupt_MASK 0x7FFFFFFF |
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53 | 57 | ||
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1121 | 1125 | ||
Line -... | Line 1126... | ||
- | 1126 | ||
- | 1127 | } |
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- | 1128 | ||
- | 1129 | ||
- | 1130 | /******************************************************************************** |
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- | 1131 | * Function Name : DMA_LLI_CCR_Init |
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- | 1132 | * Description : Return linked list's control word according to the specified |
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- | 1133 | * parameters in the LLI_CCR_InitStruct . |
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- | 1134 | * |
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- | 1135 | * Input : -LLI_CCR_InitStruct: pointer to a LLI_CCR_InitTypeDef structure |
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- | 1136 | * ( Structure Config to be load in DMA Registers). . |
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- | 1137 | * |
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- | 1138 | * Output : None. |
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- | 1139 | * |
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- | 1140 | * Return : Control word |
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- | 1141 | *******************************************************************************/ |
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- | 1142 | ||
- | 1143 | ||
- | 1144 | u32 DMA_LLI_CCR_Init(LLI_CCR_InitTypeDef * LLI_CCR_InitStruct) |
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- | 1145 | ||
- | 1146 | { |
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- | 1147 | u32 CC=0; |
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- | 1148 | /* Set The Destination width */ |
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- | 1149 | CC &= DMA_Width_DES_MASK; |
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- | 1150 | CC |= LLI_CCR_InitStruct->LLI_DesWidth; |
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- | 1151 | ||
- | 1152 | /* Set The Source width */ |
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- | 1153 | CC &= DMA_Width_SRC_MASK; |
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- | 1154 | CC |= LLI_CCR_InitStruct->LLI_SrcWidth; |
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- | 1155 | ||
- | 1156 | /* Set The Burst Size for the Destination */ |
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- | 1157 | CC &= DMA_Bst_DES_MASK; |
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- | 1158 | CC |= LLI_CCR_InitStruct->LLI_DesBstSize; |
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- | 1159 | ||
- | 1160 | /* Set The Burst Size for the Source */ |
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- | 1161 | CC &= DMA_Bst_SRC_MASK; |
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- | 1162 | CC |= LLI_CCR_InitStruct->LLI_SrcBstSize; |
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- | 1163 | ||
- | 1164 | /* Initialize The Transfer Size for the Source */ |
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- | 1165 | CC &= DMA_TrsfSisze_Mask; |
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- | 1166 | CC |= LLI_CCR_InitStruct->LLI_TrsfSize; |
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- | 1167 | ||
- | 1168 | /* Enable or disable source increment*/ |
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- | 1169 | CC &= DMA_SrcIncrement_MASK ; |
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- | 1170 | CC |= LLI_CCR_InitStruct->LLI_SrcIncrement; |
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- | 1171 | ||
- | 1172 | /* Enable or disable destination increment*/ |
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- | 1173 | CC &= DMA_DesIncrement_MASK ; |
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- | 1174 | CC |= LLI_CCR_InitStruct->LLI_DesIncrement; |
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- | 1175 | ||
- | 1176 | /* Enable or disable cacheable access*/ |
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- | 1177 | CC &= DMA_CacheableAccess_MASK; |
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- | 1178 | CC |= LLI_CCR_InitStruct->LLI_PROT0; |
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- | 1179 | ||
- | 1180 | /* Enable or disable bufferable access*/ |
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- | 1181 | CC &= DMA_BufferableAccess_MASK; |
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- | 1182 | CC |= LLI_CCR_InitStruct->LLI_PROT1; |
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- | 1183 | ||
- | 1184 | /* Enable or disablePrivileged mode*/ |
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- | 1185 | CC &= DMA_PrivilegedAccess_MASK; |
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- | 1186 | CC |= LLI_CCR_InitStruct->LLI_PROT2; |
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- | 1187 | ||
- | 1188 | /* Enable or disable Terminal count interrupt*/ |
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- | 1189 | CC &= DMA_TCInterrupt_MASK ; |
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1122 | 1190 | CC |= LLI_CCR_InitStruct->LLI_TCInterrupt; |