1 | /* part.inl |
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2 | * |
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3 | * This file contains the macro implementation of all inlined routines |
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4 | * in the Partition Manager. |
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5 | * |
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6 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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7 | * On-Line Applications Research Corporation (OAR). |
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8 | * All rights assigned to U.S. Government, 1994. |
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9 | * |
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10 | * This material may be reproduced by or for the U.S. Government pursuant |
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11 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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12 | * notice must appear in all copies of this file and its derivatives. |
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13 | * |
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14 | * $Id$ |
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15 | */ |
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16 | |
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17 | #ifndef __PARTITION_inl |
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18 | #define __PARTITION_inl |
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19 | |
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20 | /*PAGE |
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21 | * |
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22 | * _Partition_Allocate_buffer |
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23 | * |
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24 | * DESCRIPTION: |
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25 | * |
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26 | * This function attempts to allocate a buffer from the_partition. |
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27 | * If successful, it returns the address of the allocated buffer. |
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28 | * Otherwise, it returns NULL. |
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29 | */ |
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30 | |
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31 | RTEMS_INLINE_ROUTINE void *_Partition_Allocate_buffer ( |
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32 | Partition_Control *the_partition |
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33 | ) |
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34 | { |
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35 | return _Chain_Get( &the_partition->Memory ); |
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36 | } |
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37 | |
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38 | /*PAGE |
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39 | * |
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40 | * _Partition_Free_buffer |
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41 | * |
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42 | * DESCRIPTION: |
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43 | * |
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44 | * This routine frees the_buffer to the_partition. |
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45 | */ |
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46 | |
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47 | RTEMS_INLINE_ROUTINE void _Partition_Free_buffer ( |
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48 | Partition_Control *the_partition, |
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49 | Chain_Node *the_buffer |
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50 | ) |
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51 | { |
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52 | _Chain_Append( &the_partition->Memory, the_buffer ); |
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53 | } |
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54 | |
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55 | /*PAGE |
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56 | * |
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57 | * _Partition_Is_buffer_on_boundary |
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58 | * |
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59 | * DESCRIPTION: |
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60 | * |
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61 | * This function returns TRUE if the_buffer is on a valid buffer |
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62 | * boundary for the_partition, and FALSE otherwise. |
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63 | */ |
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64 | |
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65 | RTEMS_INLINE_ROUTINE boolean _Partition_Is_buffer_on_boundary ( |
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66 | void *the_buffer, |
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67 | Partition_Control *the_partition |
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68 | ) |
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69 | { |
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70 | unsigned32 offset; |
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71 | |
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72 | offset = (unsigned32) _Addresses_Subtract( |
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73 | the_buffer, |
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74 | the_partition->starting_address |
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75 | ); |
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76 | |
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77 | return ((offset % the_partition->buffer_size) == 0); |
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78 | } |
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79 | |
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80 | /*PAGE |
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81 | * |
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82 | * _Partition_Is_buffer_valid |
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83 | * |
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84 | * DESCRIPTION: |
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85 | * |
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86 | * This function returns TRUE if the_buffer is a valid buffer from |
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87 | * the_partition, otherwise FALSE is returned. |
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88 | */ |
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89 | |
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90 | RTEMS_INLINE_ROUTINE boolean _Partition_Is_buffer_valid ( |
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91 | Chain_Node *the_buffer, |
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92 | Partition_Control *the_partition |
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93 | ) |
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94 | { |
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95 | void *starting; |
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96 | void *ending; |
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97 | |
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98 | starting = the_partition->starting_address; |
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99 | ending = _Addresses_Add_offset( starting, the_partition->length ); |
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100 | |
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101 | return ( |
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102 | _Addresses_Is_in_range( the_buffer, starting, ending ) && |
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103 | _Partition_Is_buffer_on_boundary( the_buffer, the_partition ) |
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104 | ); |
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105 | } |
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106 | |
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107 | /*PAGE |
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108 | * |
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109 | * _Partition_Is_buffer_size_aligned |
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110 | * |
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111 | * DESCRIPTION: |
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112 | * |
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113 | * This function returns TRUE if the use of the specified buffer_size |
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114 | * will result in the allocation of buffers whose first byte is |
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115 | * properly aligned, and FALSE otherwise. |
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116 | */ |
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117 | |
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118 | RTEMS_INLINE_ROUTINE boolean _Partition_Is_buffer_size_aligned ( |
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119 | unsigned32 buffer_size |
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120 | ) |
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121 | { |
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122 | return ((buffer_size % CPU_PARTITION_ALIGNMENT) == 0); |
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123 | } |
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124 | |
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125 | /*PAGE |
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126 | * |
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127 | * _Partition_Allocate |
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128 | * |
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129 | * DESCRIPTION: |
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130 | * |
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131 | * This function allocates a partition control block from |
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132 | * the inactive chain of free partition control blocks. |
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133 | */ |
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134 | |
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135 | RTEMS_INLINE_ROUTINE Partition_Control *_Partition_Allocate ( void ) |
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136 | { |
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137 | return (Partition_Control *) _Objects_Allocate( &_Partition_Information ); |
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138 | } |
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139 | |
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140 | /*PAGE |
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141 | * |
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142 | * _Partition_Free |
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143 | * |
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144 | * DESCRIPTION: |
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145 | * |
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146 | * This routine frees a partition control block to the |
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147 | * inactive chain of free partition control blocks. |
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148 | */ |
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149 | |
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150 | RTEMS_INLINE_ROUTINE void _Partition_Free ( |
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151 | Partition_Control *the_partition |
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152 | ) |
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153 | { |
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154 | _Objects_Free( &_Partition_Information, &the_partition->Object ); |
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155 | } |
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156 | |
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157 | /*PAGE |
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158 | * |
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159 | * _Partition_Get |
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160 | * |
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161 | * DESCRIPTION: |
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162 | * |
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163 | * This function maps partition IDs to partition control blocks. |
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164 | * If ID corresponds to a local partition, then it returns |
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165 | * the_partition control pointer which maps to ID and location |
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166 | * is set to OBJECTS_LOCAL. If the partition ID is global and |
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167 | * resides on a remote node, then location is set to OBJECTS_REMOTE, |
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168 | * and the_partition is undefined. Otherwise, location is set |
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169 | * to OBJECTS_ERROR and the_partition is undefined. |
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170 | */ |
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171 | |
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172 | RTEMS_INLINE_ROUTINE Partition_Control *_Partition_Get ( |
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173 | Objects_Id id, |
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174 | Objects_Locations *location |
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175 | ) |
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176 | { |
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177 | return (Partition_Control *) |
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178 | _Objects_Get( &_Partition_Information, id, location ); |
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179 | } |
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180 | |
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181 | /*PAGE |
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182 | * |
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183 | * _Partition_Is_null |
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184 | * |
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185 | * DESCRIPTION: |
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186 | * |
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187 | * This function returns TRUE if the_partition is NULL |
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188 | * and FALSE otherwise. |
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189 | */ |
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190 | |
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191 | RTEMS_INLINE_ROUTINE boolean _Partition_Is_null ( |
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192 | Partition_Control *the_partition |
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193 | ) |
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194 | { |
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195 | return ( the_partition == NULL ); |
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196 | } |
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197 | |
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198 | #endif |
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199 | /* end of include file */ |
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