FreeCalypso > hg > fc-selenite
annotate src/cs/drivers/drv_core/dma/sys_dma_it.c @ 163:a911ac771094
board preprocessor conditionals: prep for more FC hw in the future
Please see the corresponding change in fc-magnetite for the explanation.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 01 Apr 2019 01:20:03 +0000 |
parents | b6a5e36de839 |
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rev | line source |
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1 /* @(#) nom : sys_dma_it.c SID: 1.2 date : 05/23/03 */ |
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2 /* Filename: sys_dma_it.c */ |
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3 /* Version: 1.2 */ |
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4 /****************************************************************************** |
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5 * WIRELESS COMMUNICATION SYSTEM DEVELOPMENT |
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6 * |
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7 * (C) 2002 Texas Instruments France. All rights reserved |
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8 * |
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9 * Author : Guillaume Leterrier |
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10 * Francois Amand |
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11 * |
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12 * |
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13 * Important Note |
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14 * -------------- |
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15 * |
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16 * This S/W is a preliminary version. It contains information on a product |
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17 * under development and is issued for evaluation purposes only. Features |
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18 * characteristics, data and other information are subject to change. |
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19 * |
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20 * The S/W is furnished under Non Disclosure Agreement and may be used or |
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21 * copied only in accordance with the terms of the agreement. It is an offence |
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22 * to copy the software in any way except as specifically set out in the |
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23 * agreement. No part of this document may be reproduced or transmitted in any |
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24 * form or by any means, electronic or mechanical, including photocopying and |
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25 * recording, for any purpose without the express written permission of Texas |
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26 * Instruments Inc. |
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27 * |
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28 ****************************************************************************** |
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29 * |
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30 * FILE NAME: sys_dma_it.c |
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31 * |
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32 * |
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33 * PURPOSE: Interruption DMA drivers for CALYPSO PLUS. |
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34 * |
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35 * |
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36 * |
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37 * FILE REFERENCES: |
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38 * |
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39 * Name IO Description |
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40 * ------------- -- --------------------------------------------- |
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41 * |
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42 * |
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43 * |
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44 * EXTERNAL VARIABLES: |
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45 * |
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46 * Source: |
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47 * |
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48 * Name Type IO Description |
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49 * ------------- --------------- -- ------------------------------ |
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50 * |
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51 * |
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52 * |
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53 * EXTERNAL REFERENCES: |
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54 * |
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55 * Name Description |
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56 * ------------------ ------------------------------------------------------- |
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57 * |
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58 * |
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59 * |
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60 * ABNORMAL TERMINATION CONDITIONS, ERROR AND WARNING MESSAGES: |
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61 * |
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62 * |
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63 * |
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64 * ASSUMPTION, CONSTRAINTS, RESTRICTIONS: |
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65 * |
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66 * |
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67 * |
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68 * NOTES: |
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69 * |
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70 * |
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71 * |
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72 * REQUIREMENTS/FUNCTIONAL SPECIFICATION REFERENCES: |
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73 * |
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74 * |
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75 * |
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76 * |
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77 * DEVELOPMENT HISTORY: |
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78 * |
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79 * Date Name(s) Version Description |
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80 * ----------- -------------- ------- ------------------------------------- |
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81 * 23-Oct-2002 G.Leterrier 0.0.1 First implementation |
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82 * |
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83 * ALGORITHM: |
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84 * |
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85 * |
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86 *****************************************************************************/ |
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87 |
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88 #include "chipset.cfg" |
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89 |
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90 #if (CHIPSET == 12) |
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91 |
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92 #include "sys_dma.h" |
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93 |
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94 |
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95 /*****************************************************************************/ |
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96 /* global variable definition */ |
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97 /***************************************************************************/ |
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98 |
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99 |
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100 /* Array of pointer on call back function with argument SYS_UWORD16. */ |
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101 /* This argument is the value of the status IT register of the channel which has generated the IT event. */ |
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102 /* The size of the array is defined by the number of DMA channel available on the device */ |
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103 |
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104 |
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105 |
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106 T_DMA_CALL_BACK pf_dma_call_back_address[C_DMA_NUMBER_OF_CHANNEL]= |
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107 {f_dma_default_call_back_it, |
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108 f_dma_default_call_back_it, |
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109 f_dma_default_call_back_it, |
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110 f_dma_default_call_back_it, |
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111 f_dma_default_call_back_it, |
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112 f_dma_default_call_back_it, |
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113 }; |
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114 |
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115 |
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116 |
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117 /****************************************************************************** |
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118 * |
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119 * FUNCTION NAME:f_dma_interrupt_manager |
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120 * The function is called when a DMA interrupt event occurs on the ARM interrupt handler. |
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121 * |
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122 * ARGUMENT LIST: |
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123 * |
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124 * Argument Type IO Description |
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125 * ---------- ---------- -- ------------------------------------------- |
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126 * none |
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127 * |
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128 * |
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129 * RETURN VALUE: none |
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130 * |
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131 *****************************************************************************/ |
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132 void f_dma_interrupt_manager(void) |
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133 { |
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134 |
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135 SYS_UWORD16 d_dma_isr; |
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136 SYS_UWORD8 d_dma_index=0; |
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137 /* MASK to eliminate interruption from channel allocation to DSP and secure channel allocated to ARM */ |
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138 d_dma_isr=C_DMA_ISR_REG & (~C_DMA_CAR_REG) & (~C_DMA_SCR_REG); |
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139 |
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140 |
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141 |
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142 /* shift ISR register from channel 0 to channel n in order to determine the channel with interrrupt active*/ |
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143 |
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144 for (d_dma_index;d_dma_index<C_DMA_NUMBER_OF_CHANNEL;d_dma_index++) /* end condition need to be checked */ |
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145 { |
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146 if ((d_dma_isr & 0x0001)==1) |
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147 { |
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148 pf_dma_call_back_address[d_dma_index](F_DMA_GET_CHANNEL_IT_STATUS(d_dma_index)); |
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149 } /* JUMP to the call back function with the status register in argument */ |
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150 d_dma_isr >>=1; |
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151 } |
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152 |
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153 } |
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154 |
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155 |
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156 /****************************************************************************** |
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157 * |
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158 * FUNCTION NAME:f_dma_secure_interrupt_manager |
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159 * The function is called when a secure DMA interrupt event occurs on the ARM interrupt handler. |
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160 * |
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161 * ARGUMENT LIST: |
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162 * |
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163 * Argument Type IO Description |
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164 * ---------- ---------- -- ------------------------------------------- |
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165 * none |
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166 * |
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167 * |
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168 * RETURN VALUE: none |
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169 * |
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170 *****************************************************************************/ |
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171 void f_dma_secure_interrupt_manager(void) |
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172 { |
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173 |
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174 SYS_UWORD16 d_dma_isr; |
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175 SYS_UWORD8 d_dma_index=0; |
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176 /* MASK to eliminate interruption from channel allocation to DSP and non-secure channel allocated to ARM */ |
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177 d_dma_isr=C_DMA_ISR_REG & (~C_DMA_CAR_REG) & (C_DMA_SCR_REG); |
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178 |
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179 /* shift ISR register from channel 0 to channel n in order to determine the channel with interrrupt active*/ |
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180 |
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181 for (d_dma_index;d_dma_index<C_DMA_NUMBER_OF_CHANNEL;d_dma_index++) /* end condition need to be checked */ |
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182 { |
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183 if ((d_dma_isr & 0x0001)==1) |
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184 { |
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185 pf_dma_call_back_address[d_dma_index](F_DMA_GET_CHANNEL_IT_STATUS(d_dma_index)); |
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186 } /* JUMP to the call back function with the status register in argument */ |
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187 d_dma_isr >>=1; |
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188 } |
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189 |
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190 } |
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191 |
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192 |
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193 /****************************************************************************** |
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194 * |
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195 * FUNCTION NAME:f_dma_default_call_back_it |
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196 * The address of that function will be called by default |
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197 * by the DMA interrupt handler, if no call-back function has been defined yet on this channel |
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198 * |
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199 * ARGUMENT LIST: |
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200 * |
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201 * Argument Type IO Description |
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202 * ---------- ---------- -- ------------------------------------------- |
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203 * d_dma_channel_status_it SYS_UWORD16 I contains a default IT status of the channel from which the event occurs. |
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204 * |
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205 * |
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206 * RETURN VALUE: none |
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207 * |
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208 *****************************************************************************/ |
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209 void f_dma_default_call_back_it(SYS_UWORD16 d_dma_channel_it_status) |
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210 { |
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211 } |
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212 |
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213 |
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214 |
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215 |
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216 |
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217 |
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218 #endif /* (CHIPSET == 12) */ |
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219 |