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 | b4e104e | 2011-01-17 11:05:40 +0800 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2011, Intel Corp. |
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> |
Len Brown | e2f7a77 | 2009-01-09 00:30:03 -0500 | [diff] [blame] | 45 | #include "accommon.h" |
| 46 | #include "acresrc.h" |
| 47 | #include "acnamesp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | ******************************************************************************/ |
Lin Ming | e0fe0a8 | 2011-11-16 14:38:13 +0800 | [diff] [blame^] | 69 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | acpi_status |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 71 | acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer, |
Lin Ming | e0fe0a8 | 2011-11-16 14:38:13 +0800 | [diff] [blame^] | 72 | struct acpi_buffer * output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | { |
| 74 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 75 | acpi_status status; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 76 | u8 *aml_start; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 77 | acpi_size list_size_needed = 0; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 78 | u32 aml_buffer_length; |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 79 | void *resource; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 81 | ACPI_FUNCTION_TRACE(rs_create_resource_list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 83 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlBuffer = %p\n", aml_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 85 | /* Params already validated, so we don't re-validate here */ |
| 86 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 87 | aml_buffer_length = aml_buffer->buffer.length; |
| 88 | aml_start = aml_buffer->buffer.pointer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
| 90 | /* |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 91 | * Pass the aml_buffer into a module that can calculate |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | * the buffer size needed for the linked list |
| 93 | */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 94 | status = acpi_rs_get_list_length(aml_start, aml_buffer_length, |
| 95 | &list_size_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 97 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 98 | status, (u32) list_size_needed)); |
| 99 | if (ACPI_FAILURE(status)) { |
| 100 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | /* Validate/Allocate/Clear caller buffer */ |
| 104 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 105 | status = acpi_ut_initialize_buffer(output_buffer, list_size_needed); |
| 106 | if (ACPI_FAILURE(status)) { |
| 107 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | } |
| 109 | |
| 110 | /* Do the conversion */ |
| 111 | |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 112 | resource = output_buffer->pointer; |
| 113 | status = acpi_ut_walk_aml_resources(aml_start, aml_buffer_length, |
| 114 | acpi_rs_convert_aml_to_resources, |
| 115 | &resource); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 116 | if (ACPI_FAILURE(status)) { |
| 117 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | } |
| 119 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 120 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 121 | output_buffer->pointer, (u32) output_buffer->length)); |
| 122 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | } |
| 124 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | /******************************************************************************* |
| 126 | * |
| 127 | * FUNCTION: acpi_rs_create_pci_routing_table |
| 128 | * |
Frederik Schwarzer | 0211a9c | 2008-12-29 22:14:56 +0100 | [diff] [blame] | 129 | * PARAMETERS: package_object - Pointer to a union acpi_operand_object |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | * package |
| 131 | * output_buffer - Pointer to the user's buffer |
| 132 | * |
| 133 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. |
| 134 | * If the output_buffer is too small, the error will be |
| 135 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point |
| 136 | * to the size buffer needed. |
| 137 | * |
| 138 | * DESCRIPTION: Takes the union acpi_operand_object package and creates a |
| 139 | * linked list of PCI interrupt descriptions |
| 140 | * |
| 141 | * NOTE: It is the caller's responsibility to ensure that the start of the |
| 142 | * output buffer is aligned properly (if necessary). |
| 143 | * |
| 144 | ******************************************************************************/ |
| 145 | |
| 146 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 147 | acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, |
| 148 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 150 | u8 *buffer; |
| 151 | union acpi_operand_object **top_object_list; |
| 152 | union acpi_operand_object **sub_object_list; |
| 153 | union acpi_operand_object *obj_desc; |
| 154 | acpi_size buffer_size_needed = 0; |
| 155 | u32 number_of_elements; |
| 156 | u32 index; |
| 157 | struct acpi_pci_routing_table *user_prt; |
| 158 | struct acpi_namespace_node *node; |
| 159 | acpi_status status; |
| 160 | struct acpi_buffer path_buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 162 | ACPI_FUNCTION_TRACE(rs_create_pci_routing_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | |
| 164 | /* Params already validated, so we don't re-validate here */ |
| 165 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 166 | /* Get the required buffer length */ |
| 167 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 168 | status = acpi_rs_get_pci_routing_table_length(package_object, |
| 169 | &buffer_size_needed); |
| 170 | if (ACPI_FAILURE(status)) { |
| 171 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | } |
| 173 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 174 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "BufferSizeNeeded = %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 175 | (u32) buffer_size_needed)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | /* Validate/Allocate/Clear caller buffer */ |
| 178 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 179 | status = acpi_ut_initialize_buffer(output_buffer, buffer_size_needed); |
| 180 | if (ACPI_FAILURE(status)) { |
| 181 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | /* |
Bob Moore | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 185 | * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a |
Bob Moore | 5df7e6c | 2010-01-21 10:06:32 +0800 | [diff] [blame] | 186 | * package that in turn contains an u64 Address, a u8 Pin, |
Bob Moore | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 187 | * a Name, and a u8 source_index. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 189 | top_object_list = package_object->package.elements; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | number_of_elements = package_object->package.count; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 191 | buffer = output_buffer->pointer; |
| 192 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | |
| 194 | for (index = 0; index < number_of_elements; index++) { |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 195 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | /* |
| 197 | * Point user_prt past this current structure |
| 198 | * |
| 199 | * NOTE: On the first iteration, user_prt->Length will |
| 200 | * be zero because we cleared the return buffer earlier |
| 201 | */ |
| 202 | buffer += user_prt->length; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 203 | user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | /* |
| 206 | * Fill in the Length field with the information we have at this point. |
| 207 | * The minus four is to subtract the size of the u8 Source[4] member |
| 208 | * because it is added below. |
| 209 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 210 | user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 212 | /* Each element of the top-level package must also be a package */ |
| 213 | |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame] | 214 | if ((*top_object_list)->common.type != ACPI_TYPE_PACKAGE) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 215 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 216 | "(PRT[%u]) Need sub-package, found %s", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 217 | index, |
| 218 | acpi_ut_get_object_type_name |
| 219 | (*top_object_list))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 220 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | } |
| 222 | |
| 223 | /* Each sub-package must be of length 4 */ |
| 224 | |
| 225 | if ((*top_object_list)->package.count != 4) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 226 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 227 | "(PRT[%u]) Need package of length 4, found length %u", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 228 | index, (*top_object_list)->package.count)); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 229 | return_ACPI_STATUS(AE_AML_PACKAGE_LIMIT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | /* |
| 233 | * Dereference the sub-package. |
| 234 | * The sub_object_list will now point to an array of the four IRQ |
| 235 | * elements: [Address, Pin, Source, source_index] |
| 236 | */ |
| 237 | sub_object_list = (*top_object_list)->package.elements; |
| 238 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 239 | /* 1) First subobject: Dereference the PRT.Address */ |
| 240 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | obj_desc = sub_object_list[0]; |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame] | 242 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 243 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 244 | "(PRT[%u].Address) Need Integer, found %s", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 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 | |
Bob Moore | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 250 | user_prt->address = obj_desc->integer.value; |
| 251 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 252 | /* 2) Second subobject: Dereference the PRT.Pin */ |
| 253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | obj_desc = sub_object_list[1]; |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame] | 255 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 256 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 257 | "(PRT[%u].Pin) Need Integer, found %s", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 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 | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 263 | user_prt->pin = (u32) obj_desc->integer.value; |
| 264 | |
Shaohua Li | 2f894ef | 2007-03-08 03:42:42 -0500 | [diff] [blame] | 265 | /* |
Bob Moore | d0e184a | 2008-06-10 14:16:47 +0800 | [diff] [blame] | 266 | * If the BIOS has erroneously reversed the _PRT source_name (index 2) |
| 267 | * and the source_index (index 3), fix it. _PRT is important enough to |
| 268 | * workaround this BIOS error. This also provides compatibility with |
| 269 | * other ACPI implementations. |
| 270 | */ |
| 271 | obj_desc = sub_object_list[3]; |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame] | 272 | if (!obj_desc || (obj_desc->common.type != ACPI_TYPE_INTEGER)) { |
Bob Moore | d0e184a | 2008-06-10 14:16:47 +0800 | [diff] [blame] | 273 | sub_object_list[3] = sub_object_list[2]; |
| 274 | sub_object_list[2] = obj_desc; |
| 275 | |
| 276 | ACPI_WARNING((AE_INFO, |
| 277 | "(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed", |
| 278 | index)); |
| 279 | } |
| 280 | |
| 281 | /* |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 282 | * 3) Third subobject: Dereference the PRT.source_name |
| 283 | * The name may be unresolved (slack mode), so allow a null object |
| 284 | */ |
Zhang Rui | 82babbb38 | 2009-04-08 09:44:29 +0800 | [diff] [blame] | 285 | obj_desc = sub_object_list[2]; |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 286 | if (obj_desc) { |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame] | 287 | switch (obj_desc->common.type) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 288 | case ACPI_TYPE_LOCAL_REFERENCE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
Bob Moore | 1044f1f | 2008-09-27 11:08:41 +0800 | [diff] [blame] | 290 | if (obj_desc->reference.class != |
| 291 | ACPI_REFCLASS_NAME) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 292 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 293 | "(PRT[%u].Source) Need name, found Reference Class 0x%X", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 294 | index, |
Bob Moore | 1044f1f | 2008-09-27 11:08:41 +0800 | [diff] [blame] | 295 | obj_desc->reference.class)); |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 296 | return_ACPI_STATUS(AE_BAD_DATA); |
| 297 | } |
| 298 | |
| 299 | node = obj_desc->reference.node; |
| 300 | |
| 301 | /* Use *remaining* length of the buffer as max for pathname */ |
| 302 | |
| 303 | path_buffer.length = output_buffer->length - |
| 304 | (u32) ((u8 *) user_prt->source - |
| 305 | (u8 *) output_buffer->pointer); |
| 306 | path_buffer.pointer = user_prt->source; |
| 307 | |
| 308 | status = |
| 309 | acpi_ns_handle_to_pathname((acpi_handle) |
| 310 | node, |
| 311 | &path_buffer); |
| 312 | |
| 313 | /* +1 to include null terminator */ |
| 314 | |
| 315 | user_prt->length += |
| 316 | (u32) ACPI_STRLEN(user_prt->source) + 1; |
| 317 | break; |
| 318 | |
| 319 | case ACPI_TYPE_STRING: |
| 320 | |
| 321 | ACPI_STRCPY(user_prt->source, |
| 322 | obj_desc->string.pointer); |
| 323 | |
| 324 | /* |
| 325 | * Add to the Length field the length of the string |
| 326 | * (add 1 for terminator) |
| 327 | */ |
| 328 | user_prt->length += obj_desc->string.length + 1; |
| 329 | break; |
| 330 | |
| 331 | case ACPI_TYPE_INTEGER: |
| 332 | /* |
| 333 | * If this is a number, then the Source Name is NULL, since the |
| 334 | * entire buffer was zeroed out, we can leave this alone. |
| 335 | * |
| 336 | * Add to the Length field the length of the u32 NULL |
| 337 | */ |
| 338 | user_prt->length += sizeof(u32); |
| 339 | break; |
| 340 | |
| 341 | default: |
| 342 | |
| 343 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 344 | "(PRT[%u].Source) Need Ref/String/Integer, found %s", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 345 | index, |
| 346 | acpi_ut_get_object_type_name |
| 347 | (obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 348 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | } |
| 351 | |
| 352 | /* Now align the current length */ |
| 353 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 354 | user_prt->length = |
Bob Moore | 958dd24 | 2006-05-12 17:12:00 -0400 | [diff] [blame] | 355 | (u32) ACPI_ROUND_UP_TO_64BIT(user_prt->length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 357 | /* 4) Fourth subobject: Dereference the PRT.source_index */ |
| 358 | |
Zhang Rui | 82babbb38 | 2009-04-08 09:44:29 +0800 | [diff] [blame] | 359 | obj_desc = sub_object_list[3]; |
Bob Moore | 3371c19 | 2009-02-18 14:44:03 +0800 | [diff] [blame] | 360 | if (obj_desc->common.type != ACPI_TYPE_INTEGER) { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 361 | ACPI_ERROR((AE_INFO, |
Bob Moore | f6a22b0 | 2010-03-05 17:56:40 +0800 | [diff] [blame] | 362 | "(PRT[%u].SourceIndex) Need Integer, found %s", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 363 | index, |
| 364 | acpi_ut_get_object_type_name(obj_desc))); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 365 | return_ACPI_STATUS(AE_BAD_DATA); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | } |
| 367 | |
Bob Moore | fd0a432 | 2008-06-10 14:27:55 +0800 | [diff] [blame] | 368 | user_prt->source_index = (u32) obj_desc->integer.value; |
| 369 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | /* Point to the next union acpi_operand_object in the top level package */ |
| 371 | |
| 372 | top_object_list++; |
| 373 | } |
| 374 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 375 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 376 | output_buffer->pointer, (u32) output_buffer->length)); |
| 377 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | } |
| 379 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | /******************************************************************************* |
| 381 | * |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 382 | * FUNCTION: acpi_rs_create_aml_resources |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | * |
| 384 | * PARAMETERS: linked_list_buffer - Pointer to the resource linked list |
| 385 | * output_buffer - Pointer to the user's buffer |
| 386 | * |
| 387 | * RETURN: Status AE_OK if okay, else a valid acpi_status code. |
| 388 | * If the output_buffer is too small, the error will be |
| 389 | * AE_BUFFER_OVERFLOW and output_buffer->Length will point |
| 390 | * to the size buffer needed. |
| 391 | * |
| 392 | * DESCRIPTION: Takes the linked list of device resources and |
| 393 | * creates a bytestream to be used as input for the |
| 394 | * _SRS control method. |
| 395 | * |
| 396 | ******************************************************************************/ |
| 397 | |
| 398 | acpi_status |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 399 | acpi_rs_create_aml_resources(struct acpi_resource *linked_list_buffer, |
| 400 | struct acpi_buffer *output_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 402 | acpi_status status; |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 403 | acpi_size aml_size_needed = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 405 | ACPI_FUNCTION_TRACE(rs_create_aml_resources); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 407 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "LinkedListBuffer = %p\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 408 | linked_list_buffer)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | |
| 410 | /* |
| 411 | * Params already validated, so we don't re-validate here |
| 412 | * |
| 413 | * Pass the linked_list_buffer into a module that calculates |
| 414 | * the buffer size needed for the byte stream. |
| 415 | */ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 416 | status = acpi_rs_get_aml_length(linked_list_buffer, &aml_size_needed); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 418 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 419 | (u32) aml_size_needed, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 420 | acpi_format_exception(status))); |
| 421 | if (ACPI_FAILURE(status)) { |
| 422 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | /* Validate/Allocate/Clear caller buffer */ |
| 426 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 427 | status = acpi_ut_initialize_buffer(output_buffer, aml_size_needed); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 428 | if (ACPI_FAILURE(status)) { |
| 429 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | } |
| 431 | |
| 432 | /* Do the conversion */ |
| 433 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 434 | status = |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 435 | acpi_rs_convert_resources_to_aml(linked_list_buffer, |
| 436 | aml_size_needed, |
| 437 | output_buffer->pointer); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 438 | if (ACPI_FAILURE(status)) { |
| 439 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | } |
| 441 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 442 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 443 | output_buffer->pointer, (u32) output_buffer->length)); |
| 444 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | } |