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annotate src/g23m-aci/gdd_dio/gdd_dio_queue.h @ 686:59f07d67eb45

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luna target split into luna1 and luna2 luna1 is FC Luna based on iWOW DSK v4.0 or v5.0 motherboard luna2 is FC Luna based on FC Caramel2 MB
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 12 Oct 2020 18:51:24 +0000
parents 53929b40109c
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | File : gdd_dio_queue.h
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4 +-----------------------------------------------------------------------------
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5 | Copyright 2002 Texas Instruments Berlin, AG
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6 | All rights reserved.
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7 |
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8 | This file is confidential and a trade secret of Texas
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9 | Instruments Berlin, AG
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10 | The receipt of or possession of this file does not convey
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11 | any rights to reproduce or disclose its contents or to
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12 | manufacture, use, or sell anything it may describe, in
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13 | whole, or in part, without the specific written consent of
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14 | Texas Instruments Berlin, AG.
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15 +-----------------------------------------------------------------------------
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16 | Purpose : Definitions for gdd_dio_queue.c
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17 +-----------------------------------------------------------------------------
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18 */
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19
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20 #ifndef GDD_DIO_QUEUE_H
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21 #define GDD_DIO_QUEUE_H
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22
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23 /*==== INCLUDES =============================================================*/
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24
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25 #include "gdd.h"
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26
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27 #include "p_dio.h"
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29
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30 /*==== DEFINITIONS ==========================================================*/
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31
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32 /**
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33 * Maximum numbers of simultaneous DIO buffers provided by PSI.
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34 * Might be increased at one stage in the future.
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35 */
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36 #define GDD_MAX_DIO_BUF 2
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37
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38 /**
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39 * Definition of buffer queue
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40 */
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41 typedef struct
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42 {
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43 T_dio_buffer * elems[GDD_MAX_DIO_BUF];
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44 U16 next_in;
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45 U16 next_out;
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46 } T_GDD_BUF_QUEUE;
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47
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48
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49 /*==== EXPORTS ===============================================================*/
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50
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51 /*
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52 +------------------------------------------------------------------------------
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53 | Function : gdd_dio_queue_clear
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54 +------------------------------------------------------------------------------
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55 | Description : Clear a queue
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56 |
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57 | Parameters : queue - pointer to queue to be cleared
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58 |
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59 +------------------------------------------------------------------------------
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60 */
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61 EXTERN void gdd_dio_queue_clear(T_GDD_BUF_QUEUE *queue);
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62
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63
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64 /*
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65 +------------------------------------------------------------------------------
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66 | Function : gdd_dio_queue_is_empty
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67 +------------------------------------------------------------------------------
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68 | Description : Check if a queue is empty
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69 |
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70 | Parameters : queue - pointer to queue to be checked
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71 |
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72 | Return : TRUE if queue is empty, FALSE otherwise
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73 +------------------------------------------------------------------------------
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74 */
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75 EXTERN BOOL gdd_dio_queue_is_empty(const T_GDD_BUF_QUEUE *queue);
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76
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77
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78 /*
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79 +------------------------------------------------------------------------------
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80 | Function : gdd_dio_queue_is_full
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81 +------------------------------------------------------------------------------
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82 | Description : Check if a queue is full
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83 |
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84 | Parameters : queue - pointer to queue to be checked
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85 |
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86 | Return : TRUE if queue is full, FALSE otherwise
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87 +------------------------------------------------------------------------------
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88 */
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89 EXTERN BOOL gdd_dio_queue_is_full(const T_GDD_BUF_QUEUE *queue);
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90
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91
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92 /*
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93 +------------------------------------------------------------------------------
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94 | Function : gdd_dio_enqueue
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95 +------------------------------------------------------------------------------
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96 | Description : Enqueue an item into the queue
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97 |
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98 | Parameters : elem - item to be enqueued
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99 | queue - pointer to queue to be modified
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100 | pos - to return the position of the enqueued item
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101 |
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102 | Return : TRUE if item is enqueued, FALSE if the queue is already full
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103 +------------------------------------------------------------------------------
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104 */
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105 EXTERN BOOL gdd_dio_enqueue(T_dio_buffer *elem, T_GDD_BUF_QUEUE *queue, /*out*/U16 *pos);
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106
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107
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108 /*
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109 +------------------------------------------------------------------------------
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110 | Function : gdd_dio_dequeue
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111 +------------------------------------------------------------------------------
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112 | Description : Dequeue an item into the queue
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113 |
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114 | Parameters : queue - pointer to queue to be modified
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115 | elem - to return the dequeued item
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116 |
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117 | Return : TRUE if item is dequeued, FALSE if the queue is empty
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118 +------------------------------------------------------------------------------
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119 */
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120 EXTERN BOOL gdd_dio_dequeue(T_GDD_BUF_QUEUE *queue, /*out*/T_dio_buffer **elem);
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121
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122 /*
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123 +------------------------------------------------------------------------------
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124 | Function : gdd_dio_queue_peek_next_for_dequeue
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125 +------------------------------------------------------------------------------
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126 | Description : Retrieves the element that is next to dequeue without actually
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127 | dequeuing it.
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128 |
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129 | Parameters : queue - pointer to queue
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130 | pos - position of element
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131 | elem - to output element value
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132 |
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133 | Return : TRUE if item is available, FALSE if the queue is empty
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134 +------------------------------------------------------------------------------
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135 */
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136 EXTERN BOOL gdd_dio_queue_peek_next_for_dequeue
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137 (const T_GDD_BUF_QUEUE *queue, T_dio_buffer **elem);
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138
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139 /*
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140 +------------------------------------------------------------------------------
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141 | Function : gdd_dio_queue_peek
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142 +------------------------------------------------------------------------------
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143 | Description : Retrieve element at specified position
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144 |
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145 | Parameters : queue - pointer to queue
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146 | pos - position of element
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147 | elem - to output element value
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148 |
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149 | Attention : This function does not do bounds checking
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150 +------------------------------------------------------------------------------
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151 */
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152 EXTERN void gdd_dio_queue_peek(const T_GDD_BUF_QUEUE *queue, U16 pos, /*out*/T_dio_buffer **elem);
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153
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154 #endif /* !GDD_DIO_QUEUE_H */
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155