Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * |
| 3 | * Module Name: rscreate - Create resource lists/tables |
| 4 | * |
| 5 | ******************************************************************************/ |
| 6 | |
| 7 | /* |
Bob Moore | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <acpi/acpi.h> |
| 45 | #include <acpi/acresrc.h> |
| 46 | #include <acpi/amlcode.h> |
| 47 | #include <acpi/acnamesp.h> |
| 48 | |
| 49 | #define _COMPONENT ACPI_RESOURCES |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 50 | ACPI_MODULE_NAME("rscreate") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | /******************************************************************************* |
| 53 | * |
| 54 | * FUNCTION: acpi_rs_create_resource_list |
| 55 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 56 | * PARAMETERS: aml_buffer - Pointer to the resource byte stream |
| 57 | * output_buffer - Pointer to the user's buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 59 | * RETURN: Status: AE_OK if okay, else a valid acpi_status code |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | * If output_buffer is not large enough, output_buffer_length |
| 61 | * indicates how large output_buffer should be, else it |
| 62 | * indicates how may u8 elements of output_buffer are valid. |
| 63 | * |
| 64 | * DESCRIPTION: Takes the byte stream returned from a _CRS, _PRS control method |
| 65 | * execution and parses the stream to create a linked list |
| 66 | * of device resources. |
| 67 | * |
| 68 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | acpi_status |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 70 | acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 71 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | { |
| 73 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 74 | acpi_status status; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 75 | u8 *aml_start; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 76 | acpi_size list_size_needed = 0; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 77 | u32 aml_buffer_length; |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 78 | void *resource; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 80 | ACPI_FUNCTION_TRACE(rs_create_resource_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 82 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlBuffer = %p\n", aml_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 84 | /* Params already validated, so we don't re-validate here */ |
| 85 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 86 | aml_buffer_length = aml_buffer->buffer.length; |
| 87 | aml_start = aml_buffer->buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
| 89 | /* |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 90 | * Pass the aml_buffer into a module that can calculate |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | * the buffer size needed for the linked list |
| 92 | */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 93 | status = acpi_rs_get_list_length(aml_start, aml_buffer_length, |
| 94 | &list_size_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 96 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 97 | status, (u32) list_size_needed)); |
| 98 | if (ACPI_FAILURE(status)) { |
| 99 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | /* Validate/Allocate/Clear caller buffer */ |
| 103 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 104 | status = acpi_ut_initialize_buffer(output_buffer, list_size_needed); |
| 105 | if (ACPI_FAILURE(status)) { |
| 106 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | /* Do the conversion */ |
| 110 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 111 | resource = output_buffer->pointer; |
| 112 | status = acpi_ut_walk_aml_resources(aml_start, aml_buffer_length, |
| 113 | acpi_rs_convert_aml_to_resources, |
| 114 | &resource); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 115 | if (ACPI_FAILURE(status)) { |
| 116 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | } |
| 118 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 119 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 120 | output_buffer->pointer, (u32) output_buffer->length)); |
| 121 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | } |
| 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | /******************************************************************************* |
| 125 | * |
| 126 | * FUNCTION: acpi_rs_create_pci_routing_table |
| 127 | * |
| 128 | * PARAMETERS: package_object - Pointer to an union acpi_operand_object |
| 129 | * package |
| 130 | * output_buffer - Pointer to the user's buffer |
| 131 | * |
| 132 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. |
| 133 | * If the output_buffer is too small, the error will be |
| 134 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point |
| 135 | * to the size buffer needed. |
| 136 | * |
| 137 | * DESCRIPTION: Takes the union acpi_operand_object package and creates a |
| 138 | * linked list of PCI interrupt descriptions |
| 139 | * |
| 140 | * NOTE: It is the caller's responsibility to ensure that the start of the |
| 141 | * output buffer is aligned properly (if necessary). |
| 142 | * |
| 143 | ******************************************************************************/ |
| 144 | |
| 145 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 146 | acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, |
| 147 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 149 | u8 *buffer; |
| 150 | union acpi_operand_object **top_object_list; |
| 151 | union acpi_operand_object **sub_object_list; |
| 152 | union acpi_operand_object *obj_desc; |
| 153 | acpi_size buffer_size_needed = 0; |
| 154 | u32 number_of_elements; |
| 155 | u32 index; |
| 156 | struct acpi_pci_routing_table *user_prt; |
| 157 | struct acpi_namespace_node *node; |
| 158 | acpi_status status; |
| 159 | struct acpi_buffer path_buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 161 | ACPI_FUNCTION_TRACE(rs_create_pci_routing_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
| 163 | /* Params already validated, so we don't re-validate here */ |
| 164 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 165 | /* Get the required buffer length */ |
| 166 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 167 | status = acpi_rs_get_pci_routing_table_length(package_object, |
| 168 | &buffer_size_needed); |
| 169 | if (ACPI_FAILURE(status)) { |
| 170 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | } |
| 172 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 173 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "BufferSizeNeeded = %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 174 | (u32) buffer_size_needed)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | |
| 176 | /* Validate/Allocate/Clear caller buffer */ |
| 177 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 178 | status = acpi_ut_initialize_buffer(output_buffer, buffer_size_needed); |
| 179 | if (ACPI_FAILURE(status)) { |
| 180 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | /* |
| 184 | * Loop through the ACPI_INTERNAL_OBJECTS - Each object |
| 185 | * should be a package that in turn contains an |
| 186 | * acpi_integer Address, a u8 Pin, a Name and a u8 source_index. |
| 187 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 188 | top_object_list = package_object->package.elements; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | number_of_elements = package_object->package.count; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 190 | buffer = output_buffer->pointer; |
| 191 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | |
| 193 | for (index = 0; index < number_of_elements; index++) { |
| 194 | /* |
| 195 | * Point user_prt past this current structure |
| 196 | * |
| 197 | * NOTE: On the first iteration, user_prt->Length will |
| 198 | * be zero because we cleared the return buffer earlier |
| 199 | */ |
| 200 | buffer += user_prt->length; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 201 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | |
| 203 | /* |
| 204 | * Fill in the Length field with the information we have at this point. |
| 205 | * The minus four is to subtract the size of the u8 Source[4] member |
| 206 | * because it is added below. |
| 207 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 208 | user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 210 | /* Each element of the top-level package must also be a package */ |
| 211 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 212 | if (ACPI_GET_OBJECT_TYPE(*top_object_list) != ACPI_TYPE_PACKAGE) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 213 | ACPI_ERROR((AE_INFO, |
| 214 | "(PRT[%X]) Need sub-package, found %s", |
| 215 | index, |
| 216 | acpi_ut_get_object_type_name |
| 217 | (*top_object_list))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 218 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | } |
| 220 | |
| 221 | /* Each sub-package must be of length 4 */ |
| 222 | |
| 223 | if ((*top_object_list)->package.count != 4) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 224 | ACPI_ERROR((AE_INFO, |
| 225 | "(PRT[%X]) Need package of length 4, found length %d", |
| 226 | index, (*top_object_list)->package.count)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 227 | return_ACPI_STATUS(AE_AML_PACKAGE_LIMIT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | } |
| 229 | |
| 230 | /* |
| 231 | * Dereference the sub-package. |
| 232 | * The sub_object_list will now point to an array of the four IRQ |
| 233 | * elements: [Address, Pin, Source, source_index] |
| 234 | */ |
| 235 | sub_object_list = (*top_object_list)->package.elements; |
| 236 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 237 | /* 1) First subobject: Dereference the PRT.Address */ |
| 238 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | obj_desc = sub_object_list[0]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 240 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | user_prt->address = obj_desc->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 242 | } else { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 243 | ACPI_ERROR((AE_INFO, |
| 244 | "(PRT[%X].Address) Need Integer, found %s", |
| 245 | index, |
| 246 | acpi_ut_get_object_type_name(obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 247 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | } |
| 249 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 250 | /* 2) Second subobject: Dereference the PRT.Pin */ |
| 251 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | obj_desc = sub_object_list[1]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 253 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | user_prt->pin = (u32) obj_desc->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 255 | } else { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 256 | ACPI_ERROR((AE_INFO, |
| 257 | "(PRT[%X].Pin) Need Integer, found %s", |
| 258 | index, |
| 259 | acpi_ut_get_object_type_name(obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 260 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | } |
| 262 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 263 | /* |
| 264 | * 3) Third subobject: Dereference the PRT.source_name |
| 265 | * The name may be unresolved (slack mode), so allow a null object |
| 266 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | obj_desc = sub_object_list[2]; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 268 | if (obj_desc) { |
| 269 | switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { |
| 270 | case ACPI_TYPE_LOCAL_REFERENCE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 272 | if (obj_desc->reference.opcode != |
| 273 | AML_INT_NAMEPATH_OP) { |
| 274 | ACPI_ERROR((AE_INFO, |
| 275 | "(PRT[%X].Source) Need name, found reference op %X", |
| 276 | index, |
| 277 | obj_desc->reference. |
| 278 | opcode)); |
| 279 | return_ACPI_STATUS(AE_BAD_DATA); |
| 280 | } |
| 281 | |
| 282 | node = obj_desc->reference.node; |
| 283 | |
| 284 | /* Use *remaining* length of the buffer as max for pathname */ |
| 285 | |
| 286 | path_buffer.length = output_buffer->length - |
| 287 | (u32) ((u8 *) user_prt->source - |
| 288 | (u8 *) output_buffer->pointer); |
| 289 | path_buffer.pointer = user_prt->source; |
| 290 | |
| 291 | status = |
| 292 | acpi_ns_handle_to_pathname((acpi_handle) |
| 293 | node, |
| 294 | &path_buffer); |
| 295 | |
| 296 | /* +1 to include null terminator */ |
| 297 | |
| 298 | user_prt->length += |
| 299 | (u32) ACPI_STRLEN(user_prt->source) + 1; |
| 300 | break; |
| 301 | |
| 302 | case ACPI_TYPE_STRING: |
| 303 | |
| 304 | ACPI_STRCPY(user_prt->source, |
| 305 | obj_desc->string.pointer); |
| 306 | |
| 307 | /* |
| 308 | * Add to the Length field the length of the string |
| 309 | * (add 1 for terminator) |
| 310 | */ |
| 311 | user_prt->length += obj_desc->string.length + 1; |
| 312 | break; |
| 313 | |
| 314 | case ACPI_TYPE_INTEGER: |
| 315 | /* |
| 316 | * If this is a number, then the Source Name is NULL, since the |
| 317 | * entire buffer was zeroed out, we can leave this alone. |
| 318 | * |
| 319 | * Add to the Length field the length of the u32 NULL |
| 320 | */ |
| 321 | user_prt->length += sizeof(u32); |
| 322 | break; |
| 323 | |
| 324 | default: |
| 325 | |
| 326 | ACPI_ERROR((AE_INFO, |
| 327 | "(PRT[%X].Source) Need Ref/String/Integer, found %s", |
| 328 | index, |
| 329 | acpi_ut_get_object_type_name |
| 330 | (obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 331 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | } |
| 334 | |
| 335 | /* Now align the current length */ |
| 336 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 337 | user_prt->length = |
Bob Moore | ea936b7 | 2006-02-17 00:00:00 -0500 | [diff] [blame] | 338 | (u32) ACPI_ROUND_UP_to_64_bIT(user_prt->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 340 | /* 4) Fourth subobject: Dereference the PRT.source_index */ |
| 341 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | obj_desc = sub_object_list[3]; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 343 | if (ACPI_GET_OBJECT_TYPE(obj_desc) == ACPI_TYPE_INTEGER) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | user_prt->source_index = (u32) obj_desc->integer.value; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 345 | } else { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 346 | ACPI_ERROR((AE_INFO, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 347 | "(PRT[%X].SourceIndex) Need Integer, found %s", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 348 | index, |
| 349 | acpi_ut_get_object_type_name(obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 350 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | /* Point to the next union acpi_operand_object in the top level package */ |
| 354 | |
| 355 | top_object_list++; |
| 356 | } |
| 357 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 358 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 359 | output_buffer->pointer, (u32) output_buffer->length)); |
| 360 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } |
| 362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | /******************************************************************************* |
| 364 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 365 | * FUNCTION: acpi_rs_create_aml_resources |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | * |
| 367 | * PARAMETERS: linked_list_buffer - Pointer to the resource linked list |
| 368 | * output_buffer - Pointer to the user's buffer |
| 369 | * |
| 370 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. |
| 371 | * If the output_buffer is too small, the error will be |
| 372 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point |
| 373 | * to the size buffer needed. |
| 374 | * |
| 375 | * DESCRIPTION: Takes the linked list of device resources and |
| 376 | * creates a bytestream to be used as input for the |
| 377 | * _SRS control method. |
| 378 | * |
| 379 | ******************************************************************************/ |
| 380 | |
| 381 | acpi_status |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 382 | acpi_rs_create_aml_resources(struct acpi_resource *linked_list_buffer, |
| 383 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 385 | acpi_status status; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 386 | acpi_size aml_size_needed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 388 | ACPI_FUNCTION_TRACE(rs_create_aml_resources); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 390 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "LinkedListBuffer = %p\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 391 | linked_list_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
| 393 | /* |
| 394 | * Params already validated, so we don't re-validate here |
| 395 | * |
| 396 | * Pass the linked_list_buffer into a module that calculates |
| 397 | * the buffer size needed for the byte stream. |
| 398 | */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 399 | status = acpi_rs_get_aml_length(linked_list_buffer, &aml_size_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 401 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 402 | (u32) aml_size_needed, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 403 | acpi_format_exception(status))); |
| 404 | if (ACPI_FAILURE(status)) { |
| 405 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } |
| 407 | |
| 408 | /* Validate/Allocate/Clear caller buffer */ |
| 409 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 410 | status = acpi_ut_initialize_buffer(output_buffer, aml_size_needed); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 411 | if (ACPI_FAILURE(status)) { |
| 412 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | } |
| 414 | |
| 415 | /* Do the conversion */ |
| 416 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 417 | status = |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 418 | acpi_rs_convert_resources_to_aml(linked_list_buffer, |
| 419 | aml_size_needed, |
| 420 | output_buffer->pointer); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 421 | if (ACPI_FAILURE(status)) { |
| 422 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | } |
| 424 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame^] | 425 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 426 | output_buffer->pointer, (u32) output_buffer->length)); |
| 427 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | } |