Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * |
| 3 | * Module Name: rsxface - Public interfaces to the resource manager |
| 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 | |
Paul Gortmaker | 214f2c9 | 2011-10-26 16:22:14 -0400 | [diff] [blame] | 44 | #include <linux/export.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #include <acpi/acpi.h> |
Len Brown | e2f7a77 | 2009-01-09 00:30:03 -0500 | [diff] [blame] | 46 | #include "accommon.h" |
| 47 | #include "acresrc.h" |
| 48 | #include "acnamesp.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | #define _COMPONENT ACPI_RESOURCES |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 51 | ACPI_MODULE_NAME("rsxface") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 53 | /* Local macros for 16,32-bit to 64-bit conversion */ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 54 | #define ACPI_COPY_FIELD(out, in, field) ((out)->field = (in)->field) |
| 55 | #define ACPI_COPY_ADDRESS(out, in) \ |
| 56 | ACPI_COPY_FIELD(out, in, resource_type); \ |
| 57 | ACPI_COPY_FIELD(out, in, producer_consumer); \ |
| 58 | ACPI_COPY_FIELD(out, in, decode); \ |
| 59 | ACPI_COPY_FIELD(out, in, min_address_fixed); \ |
| 60 | ACPI_COPY_FIELD(out, in, max_address_fixed); \ |
Bob Moore | 0897831 | 2005-10-21 00:00:00 -0400 | [diff] [blame] | 61 | ACPI_COPY_FIELD(out, in, info); \ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 62 | ACPI_COPY_FIELD(out, in, granularity); \ |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 63 | ACPI_COPY_FIELD(out, in, minimum); \ |
| 64 | ACPI_COPY_FIELD(out, in, maximum); \ |
| 65 | ACPI_COPY_FIELD(out, in, translation_offset); \ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 66 | ACPI_COPY_FIELD(out, in, address_length); \ |
| 67 | ACPI_COPY_FIELD(out, in, resource_source); |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 68 | /* Local prototypes */ |
| 69 | static acpi_status |
| 70 | acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context); |
| 71 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 72 | static acpi_status |
| 73 | acpi_rs_validate_parameters(acpi_handle device_handle, |
| 74 | struct acpi_buffer *buffer, |
| 75 | struct acpi_namespace_node **return_node); |
| 76 | |
| 77 | /******************************************************************************* |
| 78 | * |
| 79 | * FUNCTION: acpi_rs_validate_parameters |
| 80 | * |
| 81 | * PARAMETERS: device_handle - Handle to a device |
| 82 | * Buffer - Pointer to a data buffer |
| 83 | * return_node - Pointer to where the device node is returned |
| 84 | * |
| 85 | * RETURN: Status |
| 86 | * |
| 87 | * DESCRIPTION: Common parameter validation for resource interfaces |
| 88 | * |
| 89 | ******************************************************************************/ |
| 90 | |
| 91 | static acpi_status |
| 92 | acpi_rs_validate_parameters(acpi_handle device_handle, |
| 93 | struct acpi_buffer *buffer, |
| 94 | struct acpi_namespace_node **return_node) |
| 95 | { |
| 96 | acpi_status status; |
| 97 | struct acpi_namespace_node *node; |
| 98 | |
| 99 | ACPI_FUNCTION_TRACE(rs_validate_parameters); |
| 100 | |
| 101 | /* |
| 102 | * Must have a valid handle to an ACPI device |
| 103 | */ |
| 104 | if (!device_handle) { |
| 105 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
| 106 | } |
| 107 | |
Bob Moore | f24b664 | 2009-12-11 14:57:00 +0800 | [diff] [blame] | 108 | node = acpi_ns_validate_handle(device_handle); |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 109 | if (!node) { |
| 110 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
| 111 | } |
| 112 | |
| 113 | if (node->type != ACPI_TYPE_DEVICE) { |
| 114 | return_ACPI_STATUS(AE_TYPE); |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Validate the user buffer object |
| 119 | * |
| 120 | * if there is a non-zero buffer length we also need a valid pointer in |
| 121 | * the buffer. If it's a zero buffer length, we'll be returning the |
| 122 | * needed buffer size (later), so keep going. |
| 123 | */ |
| 124 | status = acpi_ut_validate_buffer(buffer); |
| 125 | if (ACPI_FAILURE(status)) { |
| 126 | return_ACPI_STATUS(status); |
| 127 | } |
| 128 | |
| 129 | *return_node = node; |
| 130 | return_ACPI_STATUS(AE_OK); |
| 131 | } |
| 132 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | /******************************************************************************* |
| 134 | * |
| 135 | * FUNCTION: acpi_get_irq_routing_table |
| 136 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 137 | * PARAMETERS: device_handle - Handle to the Bus device we are querying |
| 138 | * ret_buffer - Pointer to a buffer to receive the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | * current resources for the device |
| 140 | * |
| 141 | * RETURN: Status |
| 142 | * |
| 143 | * DESCRIPTION: This function is called to get the IRQ routing table for a |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 144 | * specific bus. The caller must first acquire a handle for the |
| 145 | * desired bus. The routine table is placed in the buffer pointed |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | * to by the ret_buffer variable parameter. |
| 147 | * |
| 148 | * If the function fails an appropriate status will be returned |
| 149 | * and the value of ret_buffer is undefined. |
| 150 | * |
| 151 | * This function attempts to execute the _PRT method contained in |
| 152 | * the object indicated by the passed device_handle. |
| 153 | * |
| 154 | ******************************************************************************/ |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 157 | acpi_get_irq_routing_table(acpi_handle device_handle, |
| 158 | struct acpi_buffer *ret_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 160 | acpi_status status; |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 161 | struct acpi_namespace_node *node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 163 | ACPI_FUNCTION_TRACE(acpi_get_irq_routing_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 165 | /* Validate parameters then dispatch to internal routine */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 167 | status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 168 | if (ACPI_FAILURE(status)) { |
| 169 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | } |
| 171 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 172 | status = acpi_rs_get_prt_method_data(node, ret_buffer); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 173 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | } |
| 175 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 176 | ACPI_EXPORT_SYMBOL(acpi_get_irq_routing_table) |
| 177 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | /******************************************************************************* |
| 179 | * |
| 180 | * FUNCTION: acpi_get_current_resources |
| 181 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 182 | * PARAMETERS: device_handle - Handle to the device object for the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | * device we are querying |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 184 | * ret_buffer - Pointer to a buffer to receive the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | * current resources for the device |
| 186 | * |
| 187 | * RETURN: Status |
| 188 | * |
| 189 | * DESCRIPTION: This function is called to get the current resources for a |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 190 | * specific device. The caller must first acquire a handle for |
| 191 | * the desired device. The resource data is placed in the buffer |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | * pointed to by the ret_buffer variable parameter. |
| 193 | * |
| 194 | * If the function fails an appropriate status will be returned |
| 195 | * and the value of ret_buffer is undefined. |
| 196 | * |
| 197 | * This function attempts to execute the _CRS method contained in |
| 198 | * the object indicated by the passed device_handle. |
| 199 | * |
| 200 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 202 | acpi_get_current_resources(acpi_handle device_handle, |
| 203 | struct acpi_buffer *ret_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 205 | acpi_status status; |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 206 | struct acpi_namespace_node *node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 208 | ACPI_FUNCTION_TRACE(acpi_get_current_resources); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 210 | /* Validate parameters then dispatch to internal routine */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 212 | status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 213 | if (ACPI_FAILURE(status)) { |
| 214 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | } |
| 216 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 217 | status = acpi_rs_get_crs_method_data(node, ret_buffer); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 218 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 221 | ACPI_EXPORT_SYMBOL(acpi_get_current_resources) |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 222 | #ifdef ACPI_FUTURE_USAGE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | /******************************************************************************* |
| 224 | * |
| 225 | * FUNCTION: acpi_get_possible_resources |
| 226 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 227 | * PARAMETERS: device_handle - Handle to the device object for the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 228 | * device we are querying |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 229 | * ret_buffer - Pointer to a buffer to receive the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | * resources for the device |
| 231 | * |
| 232 | * RETURN: Status |
| 233 | * |
| 234 | * DESCRIPTION: This function is called to get a list of the possible resources |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 235 | * for a specific device. The caller must first acquire a handle |
| 236 | * for the desired device. The resource data is placed in the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | * buffer pointed to by the ret_buffer variable. |
| 238 | * |
| 239 | * If the function fails an appropriate status will be returned |
| 240 | * and the value of ret_buffer is undefined. |
| 241 | * |
| 242 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 244 | acpi_get_possible_resources(acpi_handle device_handle, |
| 245 | struct acpi_buffer *ret_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 247 | acpi_status status; |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 248 | struct acpi_namespace_node *node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 250 | ACPI_FUNCTION_TRACE(acpi_get_possible_resources); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 252 | /* Validate parameters then dispatch to internal routine */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 254 | status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 255 | if (ACPI_FAILURE(status)) { |
| 256 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | } |
| 258 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 259 | status = acpi_rs_get_prs_method_data(node, ret_buffer); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 260 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 263 | ACPI_EXPORT_SYMBOL(acpi_get_possible_resources) |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 264 | #endif /* ACPI_FUTURE_USAGE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | /******************************************************************************* |
| 266 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | * FUNCTION: acpi_set_current_resources |
| 268 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 269 | * PARAMETERS: device_handle - Handle to the device object for the |
| 270 | * device we are setting resources |
| 271 | * in_buffer - Pointer to a buffer containing the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | * resources to be set for the device |
| 273 | * |
| 274 | * RETURN: Status |
| 275 | * |
| 276 | * DESCRIPTION: This function is called to set the current resources for a |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 277 | * specific device. The caller must first acquire a handle for |
| 278 | * the desired device. The resource data is passed to the routine |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | * the buffer pointed to by the in_buffer variable. |
| 280 | * |
| 281 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 283 | acpi_set_current_resources(acpi_handle device_handle, |
| 284 | struct acpi_buffer *in_buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 286 | acpi_status status; |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 287 | struct acpi_namespace_node *node; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 289 | ACPI_FUNCTION_TRACE(acpi_set_current_resources); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 291 | /* Validate the buffer, don't allow zero length */ |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 292 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 293 | if ((!in_buffer) || (!in_buffer->pointer) || (!in_buffer->length)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 294 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | } |
| 296 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 297 | /* Validate parameters then dispatch to internal routine */ |
| 298 | |
| 299 | status = acpi_rs_validate_parameters(device_handle, in_buffer, &node); |
| 300 | if (ACPI_FAILURE(status)) { |
| 301 | return_ACPI_STATUS(status); |
| 302 | } |
| 303 | |
| 304 | status = acpi_rs_set_srs_method_data(node, in_buffer); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 305 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 308 | ACPI_EXPORT_SYMBOL(acpi_set_current_resources) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | |
Bob Moore | a91cdde | 2011-11-16 14:46:57 +0800 | [diff] [blame^] | 310 | /******************************************************************************* |
| 311 | * |
| 312 | * FUNCTION: acpi_get_event_resources |
| 313 | * |
| 314 | * PARAMETERS: device_handle - Handle to the device object for the |
| 315 | * device we are getting resources |
| 316 | * in_buffer - Pointer to a buffer containing the |
| 317 | * resources to be set for the device |
| 318 | * |
| 319 | * RETURN: Status |
| 320 | * |
| 321 | * DESCRIPTION: This function is called to get the event resources for a |
| 322 | * specific device. The caller must first acquire a handle for |
| 323 | * the desired device. The resource data is passed to the routine |
| 324 | * the buffer pointed to by the in_buffer variable. Uses the |
| 325 | * _AEI method. |
| 326 | * |
| 327 | ******************************************************************************/ |
| 328 | acpi_status |
| 329 | acpi_get_event_resources(acpi_handle device_handle, |
| 330 | struct acpi_buffer *ret_buffer) |
| 331 | { |
| 332 | acpi_status status; |
| 333 | struct acpi_namespace_node *node; |
| 334 | |
| 335 | ACPI_FUNCTION_TRACE(acpi_get_event_resources); |
| 336 | |
| 337 | /* Validate parameters then dispatch to internal routine */ |
| 338 | |
| 339 | status = acpi_rs_validate_parameters(device_handle, ret_buffer, &node); |
| 340 | if (ACPI_FAILURE(status)) { |
| 341 | return_ACPI_STATUS(status); |
| 342 | } |
| 343 | |
| 344 | status = acpi_rs_get_aei_method_data(node, ret_buffer); |
| 345 | return_ACPI_STATUS(status); |
| 346 | } |
| 347 | |
| 348 | ACPI_EXPORT_SYMBOL(acpi_get_event_resources) |
| 349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | /****************************************************************************** |
| 351 | * |
| 352 | * FUNCTION: acpi_resource_to_address64 |
| 353 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 354 | * PARAMETERS: Resource - Pointer to a resource |
| 355 | * Out - Pointer to the users's return buffer |
| 356 | * (a struct acpi_resource_address64) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | * |
| 358 | * RETURN: Status |
| 359 | * |
| 360 | * DESCRIPTION: If the resource is an address16, address32, or address64, |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 361 | * copy it to the address64 return buffer. This saves the |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | * caller from having to duplicate code for different-sized |
| 363 | * addresses. |
| 364 | * |
| 365 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 367 | acpi_resource_to_address64(struct acpi_resource *resource, |
| 368 | struct acpi_resource_address64 *out) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 370 | struct acpi_resource_address16 *address16; |
| 371 | struct acpi_resource_address32 *address32; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 373 | if (!resource || !out) { |
| 374 | return (AE_BAD_PARAMETER); |
| 375 | } |
| 376 | |
| 377 | /* Convert 16 or 32 address descriptor to 64 */ |
| 378 | |
Robert Moore | bda663d | 2005-09-16 16:51:15 -0400 | [diff] [blame] | 379 | switch (resource->type) { |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 380 | case ACPI_RESOURCE_TYPE_ADDRESS16: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | |
Bob Moore | ba9c3f5 | 2009-04-22 13:13:48 +0800 | [diff] [blame] | 382 | address16 = |
| 383 | ACPI_CAST_PTR(struct acpi_resource_address16, |
| 384 | &resource->data); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 385 | ACPI_COPY_ADDRESS(out, address16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | break; |
| 387 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 388 | case ACPI_RESOURCE_TYPE_ADDRESS32: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Bob Moore | ba9c3f5 | 2009-04-22 13:13:48 +0800 | [diff] [blame] | 390 | address32 = |
| 391 | ACPI_CAST_PTR(struct acpi_resource_address32, |
| 392 | &resource->data); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 393 | ACPI_COPY_ADDRESS(out, address32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | break; |
| 395 | |
Bob Moore | 50eca3e | 2005-09-30 19:03:00 -0400 | [diff] [blame] | 396 | case ACPI_RESOURCE_TYPE_ADDRESS64: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
| 398 | /* Simple copy for 64 bit source */ |
| 399 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 400 | ACPI_MEMCPY(out, &resource->data, |
| 401 | sizeof(struct acpi_resource_address64)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | break; |
| 403 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | default: |
| 405 | return (AE_BAD_PARAMETER); |
| 406 | } |
| 407 | |
| 408 | return (AE_OK); |
| 409 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 410 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 411 | ACPI_EXPORT_SYMBOL(acpi_resource_to_address64) |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 412 | |
| 413 | /******************************************************************************* |
| 414 | * |
| 415 | * FUNCTION: acpi_get_vendor_resource |
| 416 | * |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 417 | * PARAMETERS: device_handle - Handle for the parent device object |
| 418 | * Name - Method name for the parent resource |
| 419 | * (METHOD_NAME__CRS or METHOD_NAME__PRS) |
| 420 | * Uuid - Pointer to the UUID to be matched. |
| 421 | * includes both subtype and 16-byte UUID |
| 422 | * ret_buffer - Where the vendor resource is returned |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 423 | * |
| 424 | * RETURN: Status |
| 425 | * |
| 426 | * DESCRIPTION: Walk a resource template for the specified evice to find a |
| 427 | * vendor-defined resource that matches the supplied UUID and |
| 428 | * UUID subtype. Returns a struct acpi_resource of type Vendor. |
| 429 | * |
| 430 | ******************************************************************************/ |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 431 | acpi_status |
| 432 | acpi_get_vendor_resource(acpi_handle device_handle, |
| 433 | char *name, |
| 434 | struct acpi_vendor_uuid * uuid, |
| 435 | struct acpi_buffer * ret_buffer) |
| 436 | { |
| 437 | struct acpi_vendor_walk_info info; |
| 438 | acpi_status status; |
| 439 | |
| 440 | /* Other parameters are validated by acpi_walk_resources */ |
| 441 | |
| 442 | if (!uuid || !ret_buffer) { |
| 443 | return (AE_BAD_PARAMETER); |
| 444 | } |
| 445 | |
| 446 | info.uuid = uuid; |
| 447 | info.buffer = ret_buffer; |
| 448 | info.status = AE_NOT_EXIST; |
| 449 | |
| 450 | /* Walk the _CRS or _PRS resource list for this device */ |
| 451 | |
| 452 | status = |
| 453 | acpi_walk_resources(device_handle, name, |
| 454 | acpi_rs_match_vendor_resource, &info); |
| 455 | if (ACPI_FAILURE(status)) { |
| 456 | return (status); |
| 457 | } |
| 458 | |
| 459 | return (info.status); |
| 460 | } |
| 461 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 462 | ACPI_EXPORT_SYMBOL(acpi_get_vendor_resource) |
| 463 | |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 464 | /******************************************************************************* |
| 465 | * |
| 466 | * FUNCTION: acpi_rs_match_vendor_resource |
| 467 | * |
Bob Moore | 61686124 | 2006-03-17 16:44:00 -0500 | [diff] [blame] | 468 | * PARAMETERS: acpi_walk_resource_callback |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 469 | * |
| 470 | * RETURN: Status |
| 471 | * |
| 472 | * DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID |
| 473 | * |
| 474 | ******************************************************************************/ |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame] | 475 | static acpi_status |
| 476 | acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context) |
| 477 | { |
| 478 | struct acpi_vendor_walk_info *info = context; |
| 479 | struct acpi_resource_vendor_typed *vendor; |
| 480 | struct acpi_buffer *buffer; |
| 481 | acpi_status status; |
| 482 | |
| 483 | /* Ignore all descriptors except Vendor */ |
| 484 | |
| 485 | if (resource->type != ACPI_RESOURCE_TYPE_VENDOR) { |
| 486 | return (AE_OK); |
| 487 | } |
| 488 | |
| 489 | vendor = &resource->data.vendor_typed; |
| 490 | |
| 491 | /* |
| 492 | * For a valid match, these conditions must hold: |
| 493 | * |
| 494 | * 1) Length of descriptor data must be at least as long as a UUID struct |
| 495 | * 2) The UUID subtypes must match |
| 496 | * 3) The UUID data must match |
| 497 | */ |
| 498 | if ((vendor->byte_length < (ACPI_UUID_LENGTH + 1)) || |
| 499 | (vendor->uuid_subtype != info->uuid->subtype) || |
| 500 | (ACPI_MEMCMP(vendor->uuid, info->uuid->data, ACPI_UUID_LENGTH))) { |
| 501 | return (AE_OK); |
| 502 | } |
| 503 | |
| 504 | /* Validate/Allocate/Clear caller buffer */ |
| 505 | |
| 506 | buffer = info->buffer; |
| 507 | status = acpi_ut_initialize_buffer(buffer, resource->length); |
| 508 | if (ACPI_FAILURE(status)) { |
| 509 | return (status); |
| 510 | } |
| 511 | |
| 512 | /* Found the correct resource, copy and return it */ |
| 513 | |
| 514 | ACPI_MEMCPY(buffer->pointer, resource, resource->length); |
| 515 | buffer->length = resource->length; |
| 516 | |
| 517 | /* Found the desired descriptor, terminate resource walk */ |
| 518 | |
| 519 | info->status = AE_OK; |
| 520 | return (AE_CTRL_TERMINATE); |
| 521 | } |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 522 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 523 | /******************************************************************************* |
| 524 | * |
| 525 | * FUNCTION: acpi_walk_resources |
| 526 | * |
| 527 | * PARAMETERS: device_handle - Handle to the device object for the |
| 528 | * device we are querying |
| 529 | * Name - Method name of the resources we want |
| 530 | * (METHOD_NAME__CRS or METHOD_NAME__PRS) |
| 531 | * user_function - Called for each resource |
| 532 | * Context - Passed to user_function |
| 533 | * |
| 534 | * RETURN: Status |
| 535 | * |
| 536 | * DESCRIPTION: Retrieves the current or possible resource list for the |
| 537 | * specified device. The user_function is called once for |
| 538 | * each resource in the list. |
| 539 | * |
| 540 | ******************************************************************************/ |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 541 | acpi_status |
| 542 | acpi_walk_resources(acpi_handle device_handle, |
| 543 | char *name, |
| 544 | acpi_walk_resource_callback user_function, void *context) |
| 545 | { |
| 546 | acpi_status status; |
| 547 | struct acpi_buffer buffer; |
| 548 | struct acpi_resource *resource; |
| 549 | struct acpi_resource *resource_end; |
| 550 | |
| 551 | ACPI_FUNCTION_TRACE(acpi_walk_resources); |
| 552 | |
| 553 | /* Parameter validation */ |
| 554 | |
| 555 | if (!device_handle || !user_function || !name || |
| 556 | (!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) && |
| 557 | !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS))) { |
| 558 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
| 559 | } |
| 560 | |
| 561 | /* Get the _CRS or _PRS resource list */ |
| 562 | |
| 563 | buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; |
| 564 | status = acpi_rs_get_method_data(device_handle, name, &buffer); |
| 565 | if (ACPI_FAILURE(status)) { |
| 566 | return_ACPI_STATUS(status); |
| 567 | } |
| 568 | |
| 569 | /* Buffer now contains the resource list */ |
| 570 | |
| 571 | resource = ACPI_CAST_PTR(struct acpi_resource, buffer.pointer); |
| 572 | resource_end = |
| 573 | ACPI_ADD_PTR(struct acpi_resource, buffer.pointer, buffer.length); |
| 574 | |
| 575 | /* Walk the resource list until the end_tag is found (or buffer end) */ |
| 576 | |
| 577 | while (resource < resource_end) { |
| 578 | |
| 579 | /* Sanity check the resource */ |
| 580 | |
| 581 | if (resource->type > ACPI_RESOURCE_TYPE_MAX) { |
| 582 | status = AE_AML_INVALID_RESOURCE_TYPE; |
| 583 | break; |
| 584 | } |
| 585 | |
| 586 | /* Invoke the user function, abort on any error returned */ |
| 587 | |
| 588 | status = user_function(resource, context); |
| 589 | if (ACPI_FAILURE(status)) { |
| 590 | if (status == AE_CTRL_TERMINATE) { |
| 591 | |
| 592 | /* This is an OK termination by the user function */ |
| 593 | |
| 594 | status = AE_OK; |
| 595 | } |
| 596 | break; |
| 597 | } |
| 598 | |
| 599 | /* end_tag indicates end-of-list */ |
| 600 | |
| 601 | if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) { |
| 602 | break; |
| 603 | } |
| 604 | |
| 605 | /* Get the next resource descriptor */ |
| 606 | |
| 607 | resource = |
| 608 | ACPI_ADD_PTR(struct acpi_resource, resource, |
| 609 | resource->length); |
| 610 | } |
| 611 | |
| 612 | ACPI_FREE(buffer.pointer); |
| 613 | return_ACPI_STATUS(status); |
| 614 | } |
| 615 | |
| 616 | ACPI_EXPORT_SYMBOL(acpi_walk_resources) |