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1498 | serge | 1 | |
2 | * |
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3 | * Module Name: exregion - ACPI default OpRegion (address space) handlers |
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4 | * |
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5 | *****************************************************************************/ |
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6 | |||
7 | |||
8 | * |
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9 | * 1. Copyright Notice |
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10 | * |
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11 | * Some or all of this work - Copyright (c) 1999 - 2011, Intel Corp. |
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2216 | Serge | 12 | * All rights reserved. |
1498 | serge | 13 | * |
14 | * 2. License |
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15 | * |
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16 | * 2.1. This is your license from Intel Corp. under its intellectual property |
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17 | * rights. You may have additional license terms from the party that provided |
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18 | * you this software, covering your right to use that party's intellectual |
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19 | * property rights. |
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20 | * |
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21 | * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a |
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22 | * copy of the source code appearing in this file ("Covered Code") an |
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23 | * irrevocable, perpetual, worldwide license under Intel's copyrights in the |
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24 | * base code distributed originally by Intel ("Original Intel Code") to copy, |
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25 | * make derivatives, distribute, use and display any portion of the Covered |
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26 | * Code in any form, with the right to sublicense such rights; and |
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27 | * |
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28 | * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent |
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29 | * license (with the right to sublicense), under only those claims of Intel |
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30 | * patents that are infringed by the Original Intel Code, to make, use, sell, |
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31 | * offer to sell, and import the Covered Code and derivative works thereof |
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32 | * solely to the minimum extent necessary to exercise the above copyright |
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33 | * license, and in no event shall the patent license extend to any additions |
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34 | * to or modifications of the Original Intel Code. No other license or right |
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35 | * is granted directly or by implication, estoppel or otherwise; |
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36 | * |
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37 | * The above copyright and patent license is granted only if the following |
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38 | * conditions are met: |
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39 | * |
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40 | * 3. Conditions |
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41 | * |
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42 | * 3.1. Redistribution of Source with Rights to Further Distribute Source. |
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43 | * Redistribution of source code of any substantial portion of the Covered |
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44 | * Code or modification with rights to further distribute source must include |
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45 | * the above Copyright Notice, the above License, this list of Conditions, |
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46 | * and the following Disclaimer and Export Compliance provision. In addition, |
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47 | * Licensee must cause all Covered Code to which Licensee contributes to |
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48 | * contain a file documenting the changes Licensee made to create that Covered |
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49 | * Code and the date of any change. Licensee must include in that file the |
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50 | * documentation of any changes made by any predecessor Licensee. Licensee |
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51 | * must include a prominent statement that the modification is derived, |
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52 | * directly or indirectly, from Original Intel Code. |
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53 | * |
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54 | * 3.2. Redistribution of Source with no Rights to Further Distribute Source. |
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55 | * Redistribution of source code of any substantial portion of the Covered |
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56 | * Code or modification without rights to further distribute source must |
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57 | * include the following Disclaimer and Export Compliance provision in the |
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58 | * documentation and/or other materials provided with distribution. In |
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59 | * addition, Licensee may not authorize further sublicense of source of any |
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60 | * portion of the Covered Code, and must include terms to the effect that the |
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61 | * license from Licensee to its licensee is limited to the intellectual |
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62 | * property embodied in the software Licensee provides to its licensee, and |
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63 | * not to intellectual property embodied in modifications its licensee may |
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64 | * make. |
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65 | * |
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66 | * 3.3. Redistribution of Executable. Redistribution in executable form of any |
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67 | * substantial portion of the Covered Code or modification must reproduce the |
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68 | * above Copyright Notice, and the following Disclaimer and Export Compliance |
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69 | * provision in the documentation and/or other materials provided with the |
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70 | * distribution. |
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71 | * |
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72 | * 3.4. Intel retains all right, title, and interest in and to the Original |
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73 | * Intel Code. |
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74 | * |
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75 | * 3.5. Neither the name Intel nor any other trademark owned or controlled by |
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76 | * Intel shall be used in advertising or otherwise to promote the sale, use or |
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77 | * other dealings in products derived from or relating to the Covered Code |
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78 | * without prior written authorization from Intel. |
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79 | * |
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80 | * 4. Disclaimer and Export Compliance |
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81 | * |
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82 | * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED |
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83 | * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE |
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84 | * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE, |
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85 | * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY |
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86 | * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY |
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87 | * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A |
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88 | * PARTICULAR PURPOSE. |
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89 | * |
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90 | * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES |
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91 | * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR |
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92 | * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT, |
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93 | * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY |
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94 | * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL |
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95 | * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS |
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96 | * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY |
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97 | * LIMITED REMEDY. |
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98 | * |
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99 | * 4.3. Licensee shall not export, either directly or indirectly, any of this |
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100 | * software or system incorporating such software without first obtaining any |
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101 | * required license or other approval from the U. S. Department of Commerce or |
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102 | * any other agency or department of the United States Government. In the |
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103 | * event Licensee exports any such software from the United States or |
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104 | * re-exports any such software from a foreign destination, Licensee shall |
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105 | * ensure that the distribution and export/re-export of the software is in |
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106 | * compliance with all laws, regulations, orders, or other restrictions of the |
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107 | * U.S. Export Administration Regulations. Licensee agrees that neither it nor |
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108 | * any of its subsidiaries will export/re-export any technical data, process, |
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109 | * software, or service, directly or indirectly, to any country for which the |
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110 | * United States government or any agency thereof requires an export license, |
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111 | * other governmental approval, or letter of assurance, without first obtaining |
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112 | * such license, approval or letter. |
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113 | * |
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114 | *****************************************************************************/ |
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115 | |||
116 | |||
117 | |||
118 | |||
119 | |||
120 | #include "accommon.h" |
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121 | #include "acinterp.h" |
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122 | |||
123 | |||
124 | |||
125 | ACPI_MODULE_NAME ("exregion") |
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126 | |||
127 | |||
128 | |||
129 | * |
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130 | * FUNCTION: AcpiExSystemMemorySpaceHandler |
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131 | * |
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132 | * PARAMETERS: Function - Read or Write operation |
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133 | * Address - Where in the space to read or write |
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134 | * BitWidth - Field width in bits (8, 16, or 32) |
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135 | * Value - Pointer to in or out value |
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136 | * HandlerContext - Pointer to Handler's context |
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137 | * RegionContext - Pointer to context specific to the |
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138 | * accessed region |
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139 | * |
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140 | * RETURN: Status |
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141 | * |
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142 | * DESCRIPTION: Handler for the System Memory address space (Op Region) |
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143 | * |
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144 | ******************************************************************************/ |
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145 | |||
146 | |||
147 | AcpiExSystemMemorySpaceHandler ( |
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148 | UINT32 Function, |
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149 | ACPI_PHYSICAL_ADDRESS Address, |
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150 | UINT32 BitWidth, |
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151 | UINT64 *Value, |
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152 | void *HandlerContext, |
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153 | void *RegionContext) |
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154 | { |
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155 | ACPI_STATUS Status = AE_OK; |
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156 | void *LogicalAddrPtr = NULL; |
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157 | ACPI_MEM_SPACE_CONTEXT *MemInfo = RegionContext; |
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158 | UINT32 Length; |
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159 | ACPI_SIZE MapLength; |
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160 | ACPI_SIZE PageBoundaryMapLength; |
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161 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
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162 | UINT32 Remainder; |
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163 | #endif |
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164 | |||
165 | |||
166 | |||
167 | |||
168 | |||
169 | |||
170 | |||
171 | |||
172 | { |
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173 | case 8: |
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174 | Length = 1; |
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175 | break; |
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176 | |||
177 | |||
178 | Length = 2; |
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179 | break; |
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180 | |||
181 | |||
182 | Length = 4; |
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183 | break; |
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184 | |||
185 | |||
186 | Length = 8; |
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187 | break; |
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188 | |||
189 | |||
190 | ACPI_ERROR ((AE_INFO, "Invalid SystemMemory width %u", |
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191 | BitWidth)); |
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192 | return_ACPI_STATUS (AE_AML_OPERAND_VALUE); |
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193 | } |
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194 | |||
195 | |||
196 | /* |
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197 | * Hardware does not support non-aligned data transfers, we must verify |
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198 | * the request. |
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199 | */ |
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200 | (void) AcpiUtShortDivide ((UINT64) Address, Length, NULL, &Remainder); |
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201 | if (Remainder != 0) |
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202 | { |
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203 | return_ACPI_STATUS (AE_AML_ALIGNMENT); |
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204 | } |
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205 | #endif |
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206 | |||
207 | |||
208 | * Does the request fit into the cached memory mapping? |
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209 | * Is 1) Address below the current mapping? OR |
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210 | * 2) Address beyond the current mapping? |
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211 | */ |
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212 | if ((Address < MemInfo->MappedPhysicalAddress) || |
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213 | (((UINT64) Address + Length) > |
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214 | ((UINT64) |
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215 | MemInfo->MappedPhysicalAddress + MemInfo->MappedLength))) |
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216 | { |
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217 | /* |
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218 | * The request cannot be resolved by the current memory mapping; |
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219 | * Delete the existing mapping and create a new one. |
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220 | */ |
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221 | if (MemInfo->MappedLength) |
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222 | { |
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223 | /* Valid mapping, delete it */ |
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224 | |||
225 | |||
226 | MemInfo->MappedLength); |
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227 | } |
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228 | |||
229 | |||
230 | * October 2009: Attempt to map from the requested address to the |
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231 | * end of the region. However, we will never map more than one |
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232 | * page, nor will we cross a page boundary. |
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233 | */ |
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234 | MapLength = (ACPI_SIZE) |
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235 | ((MemInfo->Address + MemInfo->Length) - Address); |
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236 | |||
237 | |||
238 | * If mapping the entire remaining portion of the region will cross |
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239 | * a page boundary, just map up to the page boundary, do not cross. |
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240 | * On some systems, crossing a page boundary while mapping regions |
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241 | * can cause warnings if the pages have different attributes |
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242 | * due to resource management. |
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243 | * |
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244 | * This has the added benefit of constraining a single mapping to |
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245 | * one page, which is similar to the original code that used a 4k |
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246 | * maximum window. |
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247 | */ |
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248 | PageBoundaryMapLength = |
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249 | ACPI_ROUND_UP (Address, ACPI_DEFAULT_PAGE_SIZE) - Address; |
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250 | if (PageBoundaryMapLength == 0) |
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251 | { |
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252 | PageBoundaryMapLength = ACPI_DEFAULT_PAGE_SIZE; |
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253 | } |
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254 | |||
255 | |||
256 | { |
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257 | MapLength = PageBoundaryMapLength; |
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258 | } |
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259 | |||
260 | |||
261 | |||
262 | |||
263 | (ACPI_PHYSICAL_ADDRESS) Address, MapLength); |
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264 | if (!MemInfo->MappedLogicalAddress) |
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265 | { |
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266 | ACPI_ERROR ((AE_INFO, |
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267 | "Could not map memory at 0x%8.8X%8.8X, size %u", |
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268 | ACPI_FORMAT_NATIVE_UINT (Address), (UINT32) MapLength)); |
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269 | MemInfo->MappedLength = 0; |
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270 | return_ACPI_STATUS (AE_NO_MEMORY); |
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271 | } |
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272 | |||
273 | |||
274 | |||
275 | |||
276 | MemInfo->MappedLength = MapLength; |
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277 | } |
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278 | |||
279 | |||
280 | * Generate a logical pointer corresponding to the address we want to |
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281 | * access |
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282 | */ |
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283 | LogicalAddrPtr = MemInfo->MappedLogicalAddress + |
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284 | ((UINT64) Address - (UINT64) MemInfo->MappedPhysicalAddress); |
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285 | |||
286 | |||
287 | "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n", |
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288 | BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address))); |
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289 | |||
290 | |||
291 | * Perform the memory read or write |
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292 | * |
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293 | * Note: For machines that do not support non-aligned transfers, the target |
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294 | * address was checked for alignment above. We do not attempt to break the |
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295 | * transfer up into smaller (byte-size) chunks because the AML specifically |
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296 | * asked for a transfer width that the hardware may require. |
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297 | */ |
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298 | switch (Function) |
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299 | { |
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300 | case ACPI_READ: |
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301 | |||
302 | |||
303 | switch (BitWidth) |
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304 | { |
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305 | case 8: |
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306 | *Value = (UINT64) ACPI_GET8 (LogicalAddrPtr); |
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307 | break; |
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308 | |||
309 | |||
310 | *Value = (UINT64) ACPI_GET16 (LogicalAddrPtr); |
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311 | break; |
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312 | |||
313 | |||
314 | *Value = (UINT64) ACPI_GET32 (LogicalAddrPtr); |
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315 | break; |
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316 | |||
317 | |||
318 | *Value = (UINT64) ACPI_GET64 (LogicalAddrPtr); |
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319 | break; |
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320 | |||
321 | |||
322 | /* BitWidth was already validated */ |
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323 | break; |
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324 | } |
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325 | break; |
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326 | |||
327 | |||
328 | |||
329 | |||
330 | { |
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331 | case 8: |
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332 | ACPI_SET8 (LogicalAddrPtr) = (UINT8) *Value; |
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333 | break; |
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334 | |||
335 | |||
336 | ACPI_SET16 (LogicalAddrPtr) = (UINT16) *Value; |
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337 | break; |
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338 | |||
339 | |||
340 | ACPI_SET32 ( LogicalAddrPtr) = (UINT32) *Value; |
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341 | break; |
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342 | |||
343 | |||
344 | ACPI_SET64 (LogicalAddrPtr) = (UINT64) *Value; |
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345 | break; |
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346 | |||
347 | |||
348 | /* BitWidth was already validated */ |
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349 | break; |
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350 | } |
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351 | break; |
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352 | |||
353 | |||
354 | Status = AE_BAD_PARAMETER; |
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355 | break; |
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356 | } |
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357 | |||
358 | |||
359 | } |
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360 | |||
361 | |||
362 | |||
363 | * |
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364 | * FUNCTION: AcpiExSystemIoSpaceHandler |
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365 | * |
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366 | * PARAMETERS: Function - Read or Write operation |
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367 | * Address - Where in the space to read or write |
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368 | * BitWidth - Field width in bits (8, 16, or 32) |
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369 | * Value - Pointer to in or out value |
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370 | * HandlerContext - Pointer to Handler's context |
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371 | * RegionContext - Pointer to context specific to the |
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372 | * accessed region |
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373 | * |
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374 | * RETURN: Status |
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375 | * |
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376 | * DESCRIPTION: Handler for the System IO address space (Op Region) |
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377 | * |
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378 | ******************************************************************************/ |
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379 | |||
380 | |||
381 | AcpiExSystemIoSpaceHandler ( |
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382 | UINT32 Function, |
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383 | ACPI_PHYSICAL_ADDRESS Address, |
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384 | UINT32 BitWidth, |
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385 | UINT64 *Value, |
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386 | void *HandlerContext, |
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387 | void *RegionContext) |
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388 | { |
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389 | ACPI_STATUS Status = AE_OK; |
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390 | UINT32 Value32; |
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391 | |||
392 | |||
393 | |||
394 | |||
395 | |||
396 | |||
397 | "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n", |
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398 | BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address))); |
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399 | |||
400 | |||
401 | |||
402 | |||
403 | { |
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404 | case ACPI_READ: |
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405 | |||
406 | |||
407 | &Value32, BitWidth); |
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408 | *Value = Value32; |
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409 | break; |
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410 | |||
411 | |||
412 | |||
413 | |||
414 | (UINT32) *Value, BitWidth); |
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415 | break; |
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416 | |||
417 | |||
418 | Status = AE_BAD_PARAMETER; |
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419 | break; |
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420 | } |
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421 | |||
422 | |||
423 | } |
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424 | |||
425 | |||
426 | |||
427 | * |
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428 | * FUNCTION: AcpiExPciConfigSpaceHandler |
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429 | * |
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430 | * PARAMETERS: Function - Read or Write operation |
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431 | * Address - Where in the space to read or write |
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432 | * BitWidth - Field width in bits (8, 16, or 32) |
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433 | * Value - Pointer to in or out value |
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434 | * HandlerContext - Pointer to Handler's context |
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435 | * RegionContext - Pointer to context specific to the |
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436 | * accessed region |
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437 | * |
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438 | * RETURN: Status |
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439 | * |
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440 | * DESCRIPTION: Handler for the PCI Config address space (Op Region) |
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441 | * |
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442 | ******************************************************************************/ |
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443 | |||
444 | |||
445 | AcpiExPciConfigSpaceHandler ( |
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446 | UINT32 Function, |
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447 | ACPI_PHYSICAL_ADDRESS Address, |
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448 | UINT32 BitWidth, |
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449 | UINT64 *Value, |
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450 | void *HandlerContext, |
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451 | void *RegionContext) |
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452 | { |
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453 | ACPI_STATUS Status = AE_OK; |
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454 | ACPI_PCI_ID *PciId; |
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455 | UINT16 PciRegister; |
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456 | |||
457 | |||
458 | |||
459 | |||
460 | |||
461 | |||
462 | * The arguments to AcpiOs(Read|Write)PciConfiguration are: |
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463 | * |
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464 | * PciSegment is the PCI bus segment range 0-31 |
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465 | * PciBus is the PCI bus number range 0-255 |
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466 | * PciDevice is the PCI device number range 0-31 |
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467 | * PciFunction is the PCI device function number |
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468 | * PciRegister is the Config space register range 0-255 bytes |
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469 | * |
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470 | * Value - input value for write, output address for read |
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471 | * |
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472 | */ |
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473 | PciId = (ACPI_PCI_ID *) RegionContext; |
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474 | PciRegister = (UINT16) (UINT32) Address; |
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475 | |||
476 | |||
477 | "Pci-Config %u (%u) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", |
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478 | Function, BitWidth, PciId->Segment, PciId->Bus, PciId->Device, |
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479 | PciId->Function, PciRegister)); |
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480 | |||
481 | |||
482 | { |
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483 | case ACPI_READ: |
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484 | |||
485 | |||
486 | Status = AcpiOsReadPciConfiguration (PciId, PciRegister, |
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487 | Value, BitWidth); |
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488 | break; |
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489 | |||
490 | |||
491 | |||
492 | |||
493 | *Value, BitWidth); |
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494 | break; |
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495 | |||
496 | |||
497 | |||
498 | |||
499 | break; |
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500 | } |
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501 | |||
502 | |||
503 | } |
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504 | |||
505 | |||
506 | |||
507 | * |
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508 | * FUNCTION: AcpiExCmosSpaceHandler |
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509 | * |
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510 | * PARAMETERS: Function - Read or Write operation |
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511 | * Address - Where in the space to read or write |
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512 | * BitWidth - Field width in bits (8, 16, or 32) |
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513 | * Value - Pointer to in or out value |
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514 | * HandlerContext - Pointer to Handler's context |
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515 | * RegionContext - Pointer to context specific to the |
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516 | * accessed region |
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517 | * |
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518 | * RETURN: Status |
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519 | * |
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520 | * DESCRIPTION: Handler for the CMOS address space (Op Region) |
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521 | * |
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522 | ******************************************************************************/ |
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523 | |||
524 | |||
525 | AcpiExCmosSpaceHandler ( |
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526 | UINT32 Function, |
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527 | ACPI_PHYSICAL_ADDRESS Address, |
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528 | UINT32 BitWidth, |
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529 | UINT64 *Value, |
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530 | void *HandlerContext, |
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531 | void *RegionContext) |
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532 | { |
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533 | ACPI_STATUS Status = AE_OK; |
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534 | |||
535 | |||
536 | |||
537 | |||
538 | |||
539 | |||
540 | } |
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541 | |||
542 | |||
543 | |||
544 | * |
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545 | * FUNCTION: AcpiExPciBarSpaceHandler |
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546 | * |
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547 | * PARAMETERS: Function - Read or Write operation |
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548 | * Address - Where in the space to read or write |
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549 | * BitWidth - Field width in bits (8, 16, or 32) |
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550 | * Value - Pointer to in or out value |
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551 | * HandlerContext - Pointer to Handler's context |
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552 | * RegionContext - Pointer to context specific to the |
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553 | * accessed region |
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554 | * |
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555 | * RETURN: Status |
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556 | * |
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557 | * DESCRIPTION: Handler for the PCI BarTarget address space (Op Region) |
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558 | * |
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559 | ******************************************************************************/ |
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560 | |||
561 | |||
562 | AcpiExPciBarSpaceHandler ( |
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563 | UINT32 Function, |
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564 | ACPI_PHYSICAL_ADDRESS Address, |
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565 | UINT32 BitWidth, |
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566 | UINT64 *Value, |
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567 | void *HandlerContext, |
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568 | void *RegionContext) |
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569 | { |
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570 | ACPI_STATUS Status = AE_OK; |
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571 | |||
572 | |||
573 | |||
574 | |||
575 | |||
576 | |||
577 | } |
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578 | |||
579 | |||
580 | |||
581 | * |
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582 | * FUNCTION: AcpiExDataTableSpaceHandler |
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583 | * |
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584 | * PARAMETERS: Function - Read or Write operation |
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585 | * Address - Where in the space to read or write |
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586 | * BitWidth - Field width in bits (8, 16, or 32) |
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587 | * Value - Pointer to in or out value |
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588 | * HandlerContext - Pointer to Handler's context |
||
589 | * RegionContext - Pointer to context specific to the |
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590 | * accessed region |
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591 | * |
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592 | * RETURN: Status |
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593 | * |
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594 | * DESCRIPTION: Handler for the Data Table address space (Op Region) |
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595 | * |
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596 | ******************************************************************************/ |
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597 | |||
598 | |||
599 | AcpiExDataTableSpaceHandler ( |
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600 | UINT32 Function, |
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601 | ACPI_PHYSICAL_ADDRESS Address, |
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602 | UINT32 BitWidth, |
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603 | UINT64 *Value, |
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604 | void *HandlerContext, |
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605 | void *RegionContext) |
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606 | { |
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607 | ACPI_FUNCTION_TRACE (ExDataTableSpaceHandler); |
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608 | |||
609 | |||
610 | |||
611 | * Perform the memory read or write. The BitWidth was already |
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612 | * validated. |
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613 | */ |
||
614 | switch (Function) |
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615 | { |
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616 | case ACPI_READ: |
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617 | |||
618 | |||
619 | ACPI_DIV_8 (BitWidth)); |
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620 | break; |
||
621 | |||
622 | |||
623 | |||
624 | |||
625 | ACPI_DIV_8 (BitWidth)); |
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626 | break; |
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627 | |||
628 | |||
629 | |||
630 | |||
631 | } |
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632 | |||
633 | |||
634 | }> |
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635 |