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6595 | serge | 1 | /****************************************************************************** |
2 | * |
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3 | * Module Name: dsargs - Support for execution of dynamic arguments for static |
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4 | * objects (regions, fields, buffer fields, etc.) |
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5 | * |
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6 | *****************************************************************************/ |
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7 | |||
8 | /* |
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9 | * Copyright (C) 2000 - 2015, Intel Corp. |
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10 | * All rights reserved. |
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11 | * |
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12 | * Redistribution and use in source and binary forms, with or without |
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13 | * modification, are permitted provided that the following conditions |
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14 | * are met: |
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15 | * 1. Redistributions of source code must retain the above copyright |
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16 | * notice, this list of conditions, and the following disclaimer, |
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17 | * without modification. |
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18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
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19 | * substantially similar to the "NO WARRANTY" disclaimer below |
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20 | * ("Disclaimer") and any redistribution must be conditioned upon |
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21 | * including a substantially similar Disclaimer requirement for further |
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22 | * binary redistribution. |
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23 | * 3. Neither the names of the above-listed copyright holders nor the names |
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24 | * of any contributors may be used to endorse or promote products derived |
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25 | * from this software without specific prior written permission. |
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26 | * |
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27 | * Alternatively, this software may be distributed under the terms of the |
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28 | * GNU General Public License ("GPL") version 2 as published by the Free |
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29 | * Software Foundation. |
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30 | * |
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31 | * NO WARRANTY |
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32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
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35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
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41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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42 | * POSSIBILITY OF SUCH DAMAGES. |
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43 | */ |
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44 | |||
45 | #include |
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46 | #include "accommon.h" |
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47 | #include "acparser.h" |
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48 | #include "amlcode.h" |
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49 | #include "acdispat.h" |
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50 | #include "acnamesp.h" |
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51 | |||
52 | #define _COMPONENT ACPI_DISPATCHER |
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53 | ACPI_MODULE_NAME("dsargs") |
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54 | |||
55 | /* Local prototypes */ |
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56 | static acpi_status |
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57 | acpi_ds_execute_arguments(struct acpi_namespace_node *node, |
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58 | struct acpi_namespace_node *scope_node, |
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59 | u32 aml_length, u8 *aml_start); |
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60 | |||
61 | /******************************************************************************* |
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62 | * |
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63 | * FUNCTION: acpi_ds_execute_arguments |
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64 | * |
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65 | * PARAMETERS: node - Object NS node |
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66 | * scope_node - Parent NS node |
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67 | * aml_length - Length of executable AML |
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68 | * aml_start - Pointer to the AML |
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69 | * |
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70 | * RETURN: Status. |
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71 | * |
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72 | * DESCRIPTION: Late (deferred) execution of region or field arguments |
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73 | * |
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74 | ******************************************************************************/ |
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75 | |||
76 | static acpi_status |
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77 | acpi_ds_execute_arguments(struct acpi_namespace_node *node, |
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78 | struct acpi_namespace_node *scope_node, |
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79 | u32 aml_length, u8 *aml_start) |
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80 | { |
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81 | acpi_status status; |
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82 | union acpi_parse_object *op; |
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83 | struct acpi_walk_state *walk_state; |
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84 | |||
85 | ACPI_FUNCTION_TRACE(ds_execute_arguments); |
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86 | |||
87 | /* Allocate a new parser op to be the root of the parsed tree */ |
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88 | |||
89 | op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start); |
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90 | if (!op) { |
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91 | return_ACPI_STATUS(AE_NO_MEMORY); |
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92 | } |
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93 | |||
94 | /* Save the Node for use in acpi_ps_parse_aml */ |
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95 | |||
96 | op->common.node = scope_node; |
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97 | |||
98 | /* Create and initialize a new parser state */ |
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99 | |||
100 | walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); |
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101 | if (!walk_state) { |
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102 | status = AE_NO_MEMORY; |
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103 | goto cleanup; |
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104 | } |
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105 | |||
106 | status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, |
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107 | aml_length, NULL, ACPI_IMODE_LOAD_PASS1); |
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108 | if (ACPI_FAILURE(status)) { |
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109 | acpi_ds_delete_walk_state(walk_state); |
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110 | goto cleanup; |
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111 | } |
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112 | |||
113 | /* Mark this parse as a deferred opcode */ |
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114 | |||
115 | walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP; |
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116 | walk_state->deferred_node = node; |
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117 | |||
118 | /* Pass1: Parse the entire declaration */ |
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119 | |||
120 | status = acpi_ps_parse_aml(walk_state); |
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121 | if (ACPI_FAILURE(status)) { |
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122 | goto cleanup; |
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123 | } |
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124 | |||
125 | /* Get and init the Op created above */ |
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126 | |||
127 | op->common.node = node; |
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128 | acpi_ps_delete_parse_tree(op); |
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129 | |||
130 | /* Evaluate the deferred arguments */ |
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131 | |||
132 | op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP, aml_start); |
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133 | if (!op) { |
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134 | return_ACPI_STATUS(AE_NO_MEMORY); |
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135 | } |
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136 | |||
137 | op->common.node = scope_node; |
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138 | |||
139 | /* Create and initialize a new parser state */ |
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140 | |||
141 | walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); |
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142 | if (!walk_state) { |
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143 | status = AE_NO_MEMORY; |
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144 | goto cleanup; |
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145 | } |
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146 | |||
147 | /* Execute the opcode and arguments */ |
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148 | |||
149 | status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, |
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150 | aml_length, NULL, ACPI_IMODE_EXECUTE); |
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151 | if (ACPI_FAILURE(status)) { |
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152 | acpi_ds_delete_walk_state(walk_state); |
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153 | goto cleanup; |
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154 | } |
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155 | |||
156 | /* Mark this execution as a deferred opcode */ |
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157 | |||
158 | walk_state->deferred_node = node; |
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159 | status = acpi_ps_parse_aml(walk_state); |
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160 | |||
161 | cleanup: |
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162 | acpi_ps_delete_parse_tree(op); |
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163 | return_ACPI_STATUS(status); |
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164 | } |
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165 | |||
166 | /******************************************************************************* |
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167 | * |
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168 | * FUNCTION: acpi_ds_get_buffer_field_arguments |
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169 | * |
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170 | * PARAMETERS: obj_desc - A valid buffer_field object |
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171 | * |
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172 | * RETURN: Status. |
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173 | * |
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174 | * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late |
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175 | * evaluation of these field attributes. |
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176 | * |
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177 | ******************************************************************************/ |
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178 | |||
179 | acpi_status |
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180 | acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc) |
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181 | { |
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182 | union acpi_operand_object *extra_desc; |
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183 | struct acpi_namespace_node *node; |
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184 | acpi_status status; |
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185 | |||
186 | ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc); |
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187 | |||
188 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { |
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189 | return_ACPI_STATUS(AE_OK); |
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190 | } |
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191 | |||
192 | /* Get the AML pointer (method object) and buffer_field node */ |
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193 | |||
194 | extra_desc = acpi_ns_get_secondary_object(obj_desc); |
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195 | node = obj_desc->buffer_field.node; |
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196 | |||
197 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_BUFFER_FIELD, |
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198 | node, NULL)); |
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199 | |||
200 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", |
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201 | acpi_ut_get_node_name(node))); |
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202 | |||
203 | /* Execute the AML code for the term_arg arguments */ |
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204 | |||
205 | status = acpi_ds_execute_arguments(node, node->parent, |
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206 | extra_desc->extra.aml_length, |
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207 | extra_desc->extra.aml_start); |
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208 | return_ACPI_STATUS(status); |
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209 | } |
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210 | |||
211 | /******************************************************************************* |
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212 | * |
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213 | * FUNCTION: acpi_ds_get_bank_field_arguments |
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214 | * |
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215 | * PARAMETERS: obj_desc - A valid bank_field object |
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216 | * |
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217 | * RETURN: Status. |
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218 | * |
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219 | * DESCRIPTION: Get bank_field bank_value. This implements the late |
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220 | * evaluation of these field attributes. |
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221 | * |
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222 | ******************************************************************************/ |
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223 | |||
224 | acpi_status |
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225 | acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc) |
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226 | { |
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227 | union acpi_operand_object *extra_desc; |
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228 | struct acpi_namespace_node *node; |
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229 | acpi_status status; |
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230 | |||
231 | ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc); |
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232 | |||
233 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { |
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234 | return_ACPI_STATUS(AE_OK); |
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235 | } |
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236 | |||
237 | /* Get the AML pointer (method object) and bank_field node */ |
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238 | |||
239 | extra_desc = acpi_ns_get_secondary_object(obj_desc); |
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240 | node = obj_desc->bank_field.node; |
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241 | |||
242 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname |
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243 | (ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL)); |
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244 | |||
245 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", |
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246 | acpi_ut_get_node_name(node))); |
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247 | |||
248 | /* Execute the AML code for the term_arg arguments */ |
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249 | |||
250 | status = acpi_ds_execute_arguments(node, node->parent, |
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251 | extra_desc->extra.aml_length, |
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252 | extra_desc->extra.aml_start); |
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253 | if (ACPI_FAILURE(status)) { |
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254 | return_ACPI_STATUS(status); |
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255 | } |
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256 | |||
257 | status = acpi_ut_add_address_range(obj_desc->region.space_id, |
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258 | obj_desc->region.address, |
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259 | obj_desc->region.length, node); |
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260 | return_ACPI_STATUS(status); |
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261 | } |
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262 | |||
263 | /******************************************************************************* |
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264 | * |
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265 | * FUNCTION: acpi_ds_get_buffer_arguments |
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266 | * |
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267 | * PARAMETERS: obj_desc - A valid Buffer object |
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268 | * |
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269 | * RETURN: Status. |
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270 | * |
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271 | * DESCRIPTION: Get Buffer length and initializer byte list. This implements |
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272 | * the late evaluation of these attributes. |
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273 | * |
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274 | ******************************************************************************/ |
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275 | |||
276 | acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc) |
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277 | { |
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278 | struct acpi_namespace_node *node; |
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279 | acpi_status status; |
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280 | |||
281 | ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc); |
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282 | |||
283 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { |
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284 | return_ACPI_STATUS(AE_OK); |
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285 | } |
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286 | |||
287 | /* Get the Buffer node */ |
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288 | |||
289 | node = obj_desc->buffer.node; |
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290 | if (!node) { |
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291 | ACPI_ERROR((AE_INFO, |
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292 | "No pointer back to namespace node in buffer object %p", |
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293 | obj_desc)); |
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294 | return_ACPI_STATUS(AE_AML_INTERNAL); |
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295 | } |
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296 | |||
297 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n")); |
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298 | |||
299 | /* Execute the AML code for the term_arg arguments */ |
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300 | |||
301 | status = acpi_ds_execute_arguments(node, node, |
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302 | obj_desc->buffer.aml_length, |
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303 | obj_desc->buffer.aml_start); |
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304 | return_ACPI_STATUS(status); |
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305 | } |
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306 | |||
307 | /******************************************************************************* |
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308 | * |
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309 | * FUNCTION: acpi_ds_get_package_arguments |
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310 | * |
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311 | * PARAMETERS: obj_desc - A valid Package object |
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312 | * |
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313 | * RETURN: Status. |
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314 | * |
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315 | * DESCRIPTION: Get Package length and initializer byte list. This implements |
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316 | * the late evaluation of these attributes. |
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317 | * |
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318 | ******************************************************************************/ |
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319 | |||
320 | acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc) |
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321 | { |
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322 | struct acpi_namespace_node *node; |
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323 | acpi_status status; |
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324 | |||
325 | ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc); |
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326 | |||
327 | if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { |
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328 | return_ACPI_STATUS(AE_OK); |
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329 | } |
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330 | |||
331 | /* Get the Package node */ |
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332 | |||
333 | node = obj_desc->package.node; |
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334 | if (!node) { |
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335 | ACPI_ERROR((AE_INFO, |
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336 | "No pointer back to namespace node in package %p", |
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337 | obj_desc)); |
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338 | return_ACPI_STATUS(AE_AML_INTERNAL); |
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339 | } |
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340 | |||
341 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Arg Init\n")); |
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342 | |||
343 | /* Execute the AML code for the term_arg arguments */ |
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344 | |||
345 | status = acpi_ds_execute_arguments(node, node, |
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346 | obj_desc->package.aml_length, |
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347 | obj_desc->package.aml_start); |
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348 | return_ACPI_STATUS(status); |
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349 | } |
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350 | |||
351 | /******************************************************************************* |
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352 | * |
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353 | * FUNCTION: acpi_ds_get_region_arguments |
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354 | * |
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355 | * PARAMETERS: obj_desc - A valid region object |
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356 | * |
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357 | * RETURN: Status. |
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358 | * |
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359 | * DESCRIPTION: Get region address and length. This implements the late |
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360 | * evaluation of these region attributes. |
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361 | * |
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362 | ******************************************************************************/ |
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363 | |||
364 | acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc) |
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365 | { |
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366 | struct acpi_namespace_node *node; |
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367 | acpi_status status; |
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368 | union acpi_operand_object *extra_desc; |
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369 | |||
370 | ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc); |
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371 | |||
372 | if (obj_desc->region.flags & AOPOBJ_DATA_VALID) { |
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373 | return_ACPI_STATUS(AE_OK); |
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374 | } |
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375 | |||
376 | extra_desc = acpi_ns_get_secondary_object(obj_desc); |
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377 | if (!extra_desc) { |
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378 | return_ACPI_STATUS(AE_NOT_EXIST); |
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379 | } |
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380 | |||
381 | /* Get the Region node */ |
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382 | |||
383 | node = obj_desc->region.node; |
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384 | |||
385 | ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname |
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386 | (ACPI_TYPE_REGION, node, NULL)); |
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387 | |||
388 | ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", |
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389 | acpi_ut_get_node_name(node), |
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390 | extra_desc->extra.aml_start)); |
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391 | |||
392 | /* Execute the argument AML */ |
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393 | |||
394 | status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node, |
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395 | extra_desc->extra.aml_length, |
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396 | extra_desc->extra.aml_start); |
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397 | if (ACPI_FAILURE(status)) { |
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398 | return_ACPI_STATUS(status); |
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399 | } |
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400 | |||
401 | status = acpi_ut_add_address_range(obj_desc->region.space_id, |
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402 | obj_desc->region.address, |
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403 | obj_desc->region.length, node); |
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404 | return_ACPI_STATUS(status); |
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405 | } |