Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: evrgnini- ACPI address_space (op_region) init |
| 4 | * |
| 5 | *****************************************************************************/ |
| 6 | |
| 7 | /* |
Bob Moore | 6c9deb7 | 2007-02-02 19:48:24 +0300 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2007, 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/acevents.h> |
| 46 | #include <acpi/acnamesp.h> |
| 47 | |
| 48 | #define _COMPONENT ACPI_EVENTS |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 49 | ACPI_MODULE_NAME("evrgnini") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 51 | /* Local prototypes */ |
| 52 | static u8 acpi_ev_match_pci_root_bridge(char *id); |
| 53 | |
| 54 | static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node); |
| 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | /******************************************************************************* |
| 57 | * |
| 58 | * FUNCTION: acpi_ev_system_memory_region_setup |
| 59 | * |
| 60 | * PARAMETERS: Handle - Region we are interested in |
| 61 | * Function - Start or stop |
| 62 | * handler_context - Address space handler context |
| 63 | * region_context - Region specific context |
| 64 | * |
| 65 | * RETURN: Status |
| 66 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 67 | * DESCRIPTION: Setup a system_memory operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | * |
| 69 | ******************************************************************************/ |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 70 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 72 | acpi_ev_system_memory_region_setup(acpi_handle handle, |
| 73 | u32 function, |
| 74 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 76 | union acpi_operand_object *region_desc = |
| 77 | (union acpi_operand_object *)handle; |
| 78 | struct acpi_mem_space_context *local_region_context; |
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(ev_system_memory_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | if (function == ACPI_REGION_DEACTIVATE) { |
| 83 | if (*region_context) { |
Bob Moore | 793c238 | 2006-03-31 00:00:00 -0500 | [diff] [blame] | 84 | local_region_context = |
| 85 | (struct acpi_mem_space_context *)*region_context; |
| 86 | |
| 87 | /* Delete a cached mapping if present */ |
| 88 | |
| 89 | if (local_region_context->mapped_length) { |
| 90 | acpi_os_unmap_memory(local_region_context-> |
| 91 | mapped_logical_address, |
| 92 | local_region_context-> |
| 93 | mapped_length); |
| 94 | } |
| 95 | ACPI_FREE(local_region_context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | *region_context = NULL; |
| 97 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 98 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | /* Create a new context */ |
| 102 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 103 | local_region_context = |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 104 | ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_mem_space_context)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | if (!(local_region_context)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 106 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | /* Save the region length and address for use in the handler */ |
| 110 | |
| 111 | local_region_context->length = region_desc->region.length; |
| 112 | local_region_context->address = region_desc->region.address; |
| 113 | |
| 114 | *region_context = local_region_context; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 115 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | } |
| 117 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | /******************************************************************************* |
| 119 | * |
| 120 | * FUNCTION: acpi_ev_io_space_region_setup |
| 121 | * |
| 122 | * PARAMETERS: Handle - Region we are interested in |
| 123 | * Function - Start or stop |
| 124 | * handler_context - Address space handler context |
| 125 | * region_context - Region specific context |
| 126 | * |
| 127 | * RETURN: Status |
| 128 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 129 | * DESCRIPTION: Setup a IO operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | * |
| 131 | ******************************************************************************/ |
| 132 | |
| 133 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 134 | acpi_ev_io_space_region_setup(acpi_handle handle, |
| 135 | u32 function, |
| 136 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | { |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 138 | ACPI_FUNCTION_TRACE(ev_io_space_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | |
| 140 | if (function == ACPI_REGION_DEACTIVATE) { |
| 141 | *region_context = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 142 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | *region_context = handler_context; |
| 144 | } |
| 145 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 146 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | } |
| 148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | /******************************************************************************* |
| 150 | * |
| 151 | * FUNCTION: acpi_ev_pci_config_region_setup |
| 152 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 153 | * PARAMETERS: Handle - Region we are interested in |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | * Function - Start or stop |
| 155 | * handler_context - Address space handler context |
| 156 | * region_context - Region specific context |
| 157 | * |
| 158 | * RETURN: Status |
| 159 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 160 | * DESCRIPTION: Setup a PCI_Config operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | * |
| 162 | * MUTEX: Assumes namespace is not locked |
| 163 | * |
| 164 | ******************************************************************************/ |
| 165 | |
| 166 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 167 | acpi_ev_pci_config_region_setup(acpi_handle handle, |
| 168 | u32 function, |
| 169 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 171 | acpi_status status = AE_OK; |
| 172 | acpi_integer pci_value; |
| 173 | struct acpi_pci_id *pci_id = *region_context; |
| 174 | union acpi_operand_object *handler_obj; |
| 175 | struct acpi_namespace_node *parent_node; |
| 176 | struct acpi_namespace_node *pci_root_node; |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 177 | struct acpi_namespace_node *pci_device_node; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 178 | union acpi_operand_object *region_obj = |
| 179 | (union acpi_operand_object *)handle; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 181 | ACPI_FUNCTION_TRACE(ev_pci_config_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | handler_obj = region_obj->region.handler; |
| 184 | if (!handler_obj) { |
| 185 | /* |
| 186 | * No installed handler. This shouldn't happen because the dispatch |
| 187 | * routine checks before we get here, but we check again just in case. |
| 188 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 189 | ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, |
| 190 | "Attempting to init a region %p, with no handler\n", |
| 191 | region_obj)); |
| 192 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | } |
| 194 | |
| 195 | *region_context = NULL; |
| 196 | if (function == ACPI_REGION_DEACTIVATE) { |
| 197 | if (pci_id) { |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 198 | ACPI_FREE(pci_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 200 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | } |
| 202 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 203 | parent_node = acpi_ns_get_parent_node(region_obj->region.node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | |
| 205 | /* |
| 206 | * Get the _SEG and _BBN values from the device upon which the handler |
| 207 | * is installed. |
| 208 | * |
| 209 | * We need to get the _SEG and _BBN objects relative to the PCI BUS device. |
| 210 | * This is the device the handler has been registered to handle. |
| 211 | */ |
| 212 | |
| 213 | /* |
| 214 | * If the address_space.Node is still pointing to the root, we need |
| 215 | * to scan upward for a PCI Root bridge and re-associate the op_region |
| 216 | * handlers with that device. |
| 217 | */ |
| 218 | if (handler_obj->address_space.node == acpi_gbl_root_node) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | /* Start search from the parent object */ |
| 221 | |
| 222 | pci_root_node = parent_node; |
| 223 | while (pci_root_node != acpi_gbl_root_node) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 224 | |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 225 | /* Get the _HID/_CID in order to detect a root_bridge */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 227 | if (acpi_ev_is_pci_root_bridge(pci_root_node)) { |
| 228 | |
| 229 | /* Install a handler for this PCI root bridge */ |
| 230 | |
Len Brown | fd35094 | 2007-05-09 23:34:35 -0400 | [diff] [blame] | 231 | status = |
| 232 | acpi_install_address_space_handler((acpi_handle) pci_root_node, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 233 | if (ACPI_FAILURE(status)) { |
| 234 | if (status == AE_SAME_HANDLER) { |
| 235 | /* |
| 236 | * It is OK if the handler is already installed on the root |
| 237 | * bridge. Still need to return a context object for the |
| 238 | * new PCI_Config operation region, however. |
| 239 | */ |
| 240 | status = AE_OK; |
| 241 | } else { |
| 242 | ACPI_EXCEPTION((AE_INFO, status, |
| 243 | "Could not install PciConfig handler for Root Bridge %4.4s", |
| 244 | acpi_ut_get_node_name |
| 245 | (pci_root_node))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | } |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 248 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | } |
| 250 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 251 | pci_root_node = acpi_ns_get_parent_node(pci_root_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | /* PCI root bridge not found, use namespace root node */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 255 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | pci_root_node = handler_obj->address_space.node; |
| 257 | } |
| 258 | |
| 259 | /* |
| 260 | * If this region is now initialized, we are done. |
| 261 | * (install_address_space_handler could have initialized it) |
| 262 | */ |
| 263 | if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 264 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | } |
| 266 | |
| 267 | /* Region is still not initialized. Create a new context */ |
| 268 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 269 | pci_id = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pci_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | if (!pci_id) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 271 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | } |
| 273 | |
| 274 | /* |
| 275 | * For PCI_Config space access, we need the segment, bus, |
| 276 | * device and function numbers. Acquire them here. |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 277 | * |
| 278 | * Find the parent device object. (This allows the operation region to be |
| 279 | * within a subscope under the device, such as a control method.) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | */ |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 281 | pci_device_node = region_obj->region.node; |
| 282 | while (pci_device_node && (pci_device_node->type != ACPI_TYPE_DEVICE)) { |
| 283 | pci_device_node = acpi_ns_get_parent_node(pci_device_node); |
| 284 | } |
| 285 | |
| 286 | if (!pci_device_node) { |
| 287 | return_ACPI_STATUS(AE_AML_OPERAND_TYPE); |
| 288 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
| 290 | /* |
| 291 | * Get the PCI device and function numbers from the _ADR object |
| 292 | * contained in the parent's scope. |
| 293 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 294 | status = |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 295 | acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, pci_device_node, |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 296 | &pci_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | |
| 298 | /* |
| 299 | * The default is zero, and since the allocation above zeroed |
| 300 | * the data, just do nothing on failure. |
| 301 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 302 | if (ACPI_SUCCESS(status)) { |
| 303 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(pci_value)); |
| 304 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(pci_value)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | /* The PCI segment number comes from the _SEG method */ |
| 308 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 309 | status = |
| 310 | acpi_ut_evaluate_numeric_object(METHOD_NAME__SEG, pci_root_node, |
| 311 | &pci_value); |
| 312 | if (ACPI_SUCCESS(status)) { |
| 313 | pci_id->segment = ACPI_LOWORD(pci_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | /* The PCI bus number comes from the _BBN method */ |
| 317 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 318 | status = |
| 319 | acpi_ut_evaluate_numeric_object(METHOD_NAME__BBN, pci_root_node, |
| 320 | &pci_value); |
| 321 | if (ACPI_SUCCESS(status)) { |
| 322 | pci_id->bus = ACPI_LOWORD(pci_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | /* Complete this device's pci_id */ |
| 326 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 327 | acpi_os_derive_pci_id(pci_root_node, region_obj->region.node, &pci_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
| 329 | *region_context = pci_id; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 330 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | } |
| 332 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | /******************************************************************************* |
| 334 | * |
Bob Moore | b7a6980 | 2007-02-02 19:48:21 +0300 | [diff] [blame] | 335 | * FUNCTION: acpi_ev_match_pci_root_bridge |
| 336 | * |
| 337 | * PARAMETERS: Id - The HID/CID in string format |
| 338 | * |
| 339 | * RETURN: TRUE if the Id is a match for a PCI/PCI-Express Root Bridge |
| 340 | * |
| 341 | * DESCRIPTION: Determine if the input ID is a PCI Root Bridge ID. |
| 342 | * |
| 343 | ******************************************************************************/ |
| 344 | |
| 345 | static u8 acpi_ev_match_pci_root_bridge(char *id) |
| 346 | { |
| 347 | |
| 348 | /* |
| 349 | * Check if this is a PCI root. |
| 350 | * ACPI 3.0+: check for a PCI Express root also. |
| 351 | */ |
| 352 | if (!(ACPI_STRNCMP(id, |
| 353 | PCI_ROOT_HID_STRING, |
| 354 | sizeof(PCI_ROOT_HID_STRING))) || |
| 355 | !(ACPI_STRNCMP(id, |
| 356 | PCI_EXPRESS_ROOT_HID_STRING, |
| 357 | sizeof(PCI_EXPRESS_ROOT_HID_STRING)))) { |
| 358 | return (TRUE); |
| 359 | } |
| 360 | |
| 361 | return (FALSE); |
| 362 | } |
| 363 | |
| 364 | /******************************************************************************* |
| 365 | * |
| 366 | * FUNCTION: acpi_ev_is_pci_root_bridge |
| 367 | * |
| 368 | * PARAMETERS: Node - Device node being examined |
| 369 | * |
| 370 | * RETURN: TRUE if device is a PCI/PCI-Express Root Bridge |
| 371 | * |
| 372 | * DESCRIPTION: Determine if the input device represents a PCI Root Bridge by |
| 373 | * examining the _HID and _CID for the device. |
| 374 | * |
| 375 | ******************************************************************************/ |
| 376 | |
| 377 | static u8 acpi_ev_is_pci_root_bridge(struct acpi_namespace_node *node) |
| 378 | { |
| 379 | acpi_status status; |
| 380 | struct acpi_device_id hid; |
| 381 | struct acpi_compatible_id_list *cid; |
| 382 | acpi_native_uint i; |
| 383 | |
| 384 | /* |
| 385 | * Get the _HID and check for a PCI Root Bridge |
| 386 | */ |
| 387 | status = acpi_ut_execute_HID(node, &hid); |
| 388 | if (ACPI_FAILURE(status)) { |
| 389 | return (FALSE); |
| 390 | } |
| 391 | |
| 392 | if (acpi_ev_match_pci_root_bridge(hid.value)) { |
| 393 | return (TRUE); |
| 394 | } |
| 395 | |
| 396 | /* |
| 397 | * The _HID did not match. |
| 398 | * Get the _CID and check for a PCI Root Bridge |
| 399 | */ |
| 400 | status = acpi_ut_execute_CID(node, &cid); |
| 401 | if (ACPI_FAILURE(status)) { |
| 402 | return (FALSE); |
| 403 | } |
| 404 | |
| 405 | /* Check all _CIDs in the returned list */ |
| 406 | |
| 407 | for (i = 0; i < cid->count; i++) { |
| 408 | if (acpi_ev_match_pci_root_bridge(cid->id[i].value)) { |
| 409 | ACPI_FREE(cid); |
| 410 | return (TRUE); |
| 411 | } |
| 412 | } |
| 413 | |
| 414 | ACPI_FREE(cid); |
| 415 | return (FALSE); |
| 416 | } |
| 417 | |
| 418 | /******************************************************************************* |
| 419 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | * FUNCTION: acpi_ev_pci_bar_region_setup |
| 421 | * |
| 422 | * PARAMETERS: Handle - Region we are interested in |
| 423 | * Function - Start or stop |
| 424 | * handler_context - Address space handler context |
| 425 | * region_context - Region specific context |
| 426 | * |
| 427 | * RETURN: Status |
| 428 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 429 | * DESCRIPTION: Setup a pci_bAR operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | * |
| 431 | * MUTEX: Assumes namespace is not locked |
| 432 | * |
| 433 | ******************************************************************************/ |
| 434 | |
| 435 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 436 | acpi_ev_pci_bar_region_setup(acpi_handle handle, |
| 437 | u32 function, |
| 438 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | { |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 440 | ACPI_FUNCTION_TRACE(ev_pci_bar_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 442 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | } |
| 444 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | /******************************************************************************* |
| 446 | * |
| 447 | * FUNCTION: acpi_ev_cmos_region_setup |
| 448 | * |
| 449 | * PARAMETERS: Handle - Region we are interested in |
| 450 | * Function - Start or stop |
| 451 | * handler_context - Address space handler context |
| 452 | * region_context - Region specific context |
| 453 | * |
| 454 | * RETURN: Status |
| 455 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 456 | * DESCRIPTION: Setup a CMOS operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | * |
| 458 | * MUTEX: Assumes namespace is not locked |
| 459 | * |
| 460 | ******************************************************************************/ |
| 461 | |
| 462 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 463 | acpi_ev_cmos_region_setup(acpi_handle handle, |
| 464 | u32 function, |
| 465 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | { |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 467 | ACPI_FUNCTION_TRACE(ev_cmos_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 469 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | } |
| 471 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | /******************************************************************************* |
| 473 | * |
| 474 | * FUNCTION: acpi_ev_default_region_setup |
| 475 | * |
| 476 | * PARAMETERS: Handle - Region we are interested in |
| 477 | * Function - Start or stop |
| 478 | * handler_context - Address space handler context |
| 479 | * region_context - Region specific context |
| 480 | * |
| 481 | * RETURN: Status |
| 482 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 483 | * DESCRIPTION: Default region initialization |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | * |
| 485 | ******************************************************************************/ |
| 486 | |
| 487 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 488 | acpi_ev_default_region_setup(acpi_handle handle, |
| 489 | u32 function, |
| 490 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | { |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 492 | ACPI_FUNCTION_TRACE(ev_default_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
| 494 | if (function == ACPI_REGION_DEACTIVATE) { |
| 495 | *region_context = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 496 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | *region_context = handler_context; |
| 498 | } |
| 499 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 500 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | } |
| 502 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | /******************************************************************************* |
| 504 | * |
| 505 | * FUNCTION: acpi_ev_initialize_region |
| 506 | * |
| 507 | * PARAMETERS: region_obj - Region we are initializing |
| 508 | * acpi_ns_locked - Is namespace locked? |
| 509 | * |
| 510 | * RETURN: Status |
| 511 | * |
| 512 | * DESCRIPTION: Initializes the region, finds any _REG methods and saves them |
| 513 | * for execution at a later time |
| 514 | * |
| 515 | * Get the appropriate address space handler for a newly |
| 516 | * created region. |
| 517 | * |
| 518 | * This also performs address space specific initialization. For |
| 519 | * example, PCI regions must have an _ADR object that contains |
| 520 | * a PCI address in the scope of the definition. This address is |
| 521 | * required to perform an access to PCI config space. |
| 522 | * |
Bob Moore | c9e3ba2 | 2007-02-02 19:48:18 +0300 | [diff] [blame] | 523 | * MUTEX: Interpreter should be unlocked, because we may run the _REG |
| 524 | * method for this region. |
| 525 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | ******************************************************************************/ |
| 527 | |
| 528 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 529 | acpi_ev_initialize_region(union acpi_operand_object *region_obj, |
| 530 | u8 acpi_ns_locked) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 532 | union acpi_operand_object *handler_obj; |
| 533 | union acpi_operand_object *obj_desc; |
| 534 | acpi_adr_space_type space_id; |
| 535 | struct acpi_namespace_node *node; |
| 536 | acpi_status status; |
| 537 | struct acpi_namespace_node *method_node; |
| 538 | acpi_name *reg_name_ptr = (acpi_name *) METHOD_NAME__REG; |
| 539 | union acpi_operand_object *region_obj2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 541 | ACPI_FUNCTION_TRACE_U32(ev_initialize_region, acpi_ns_locked); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | |
| 543 | if (!region_obj) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 544 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | if (region_obj->common.flags & AOPOBJ_OBJECT_INITIALIZED) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 548 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | } |
| 550 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 551 | region_obj2 = acpi_ns_get_secondary_object(region_obj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | if (!region_obj2) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 553 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | } |
| 555 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 556 | node = acpi_ns_get_parent_node(region_obj->region.node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | space_id = region_obj->region.space_id; |
| 558 | |
| 559 | /* Setup defaults */ |
| 560 | |
| 561 | region_obj->region.handler = NULL; |
| 562 | region_obj2->extra.method_REG = NULL; |
| 563 | region_obj->common.flags &= ~(AOPOBJ_SETUP_COMPLETE); |
| 564 | region_obj->common.flags |= AOPOBJ_OBJECT_INITIALIZED; |
| 565 | |
| 566 | /* Find any "_REG" method associated with this region definition */ |
| 567 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame] | 568 | status = |
| 569 | acpi_ns_search_one_scope(*reg_name_ptr, node, ACPI_TYPE_METHOD, |
| 570 | &method_node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 571 | if (ACPI_SUCCESS(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | /* |
| 573 | * The _REG method is optional and there can be only one per region |
| 574 | * definition. This will be executed when the handler is attached |
| 575 | * or removed |
| 576 | */ |
| 577 | region_obj2->extra.method_REG = method_node; |
| 578 | } |
| 579 | |
| 580 | /* |
| 581 | * The following loop depends upon the root Node having no parent |
| 582 | * ie: acpi_gbl_root_node->parent_entry being set to NULL |
| 583 | */ |
| 584 | while (node) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 585 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | /* Check to see if a handler exists */ |
| 587 | |
| 588 | handler_obj = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 589 | obj_desc = acpi_ns_get_attached_object(node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | if (obj_desc) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 591 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | /* Can only be a handler if the object exists */ |
| 593 | |
| 594 | switch (node->type) { |
| 595 | case ACPI_TYPE_DEVICE: |
| 596 | |
| 597 | handler_obj = obj_desc->device.handler; |
| 598 | break; |
| 599 | |
| 600 | case ACPI_TYPE_PROCESSOR: |
| 601 | |
| 602 | handler_obj = obj_desc->processor.handler; |
| 603 | break; |
| 604 | |
| 605 | case ACPI_TYPE_THERMAL: |
| 606 | |
| 607 | handler_obj = obj_desc->thermal_zone.handler; |
| 608 | break; |
| 609 | |
| 610 | default: |
| 611 | /* Ignore other objects */ |
| 612 | break; |
| 613 | } |
| 614 | |
| 615 | while (handler_obj) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 616 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | /* Is this handler of the correct type? */ |
| 618 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 619 | if (handler_obj->address_space.space_id == |
| 620 | space_id) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 621 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | /* Found correct handler */ |
| 623 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 624 | ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, |
| 625 | "Found handler %p for region %p in obj %p\n", |
| 626 | handler_obj, |
| 627 | region_obj, |
| 628 | obj_desc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 630 | status = |
| 631 | acpi_ev_attach_region(handler_obj, |
| 632 | region_obj, |
| 633 | acpi_ns_locked); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | |
| 635 | /* |
| 636 | * Tell all users that this region is usable by running the _REG |
| 637 | * method |
| 638 | */ |
| 639 | if (acpi_ns_locked) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 640 | status = |
| 641 | acpi_ut_release_mutex |
| 642 | (ACPI_MTX_NAMESPACE); |
| 643 | if (ACPI_FAILURE(status)) { |
| 644 | return_ACPI_STATUS |
| 645 | (status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | } |
| 647 | } |
| 648 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 649 | status = |
| 650 | acpi_ev_execute_reg_method |
| 651 | (region_obj, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | |
| 653 | if (acpi_ns_locked) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 654 | status = |
| 655 | acpi_ut_acquire_mutex |
| 656 | (ACPI_MTX_NAMESPACE); |
| 657 | if (ACPI_FAILURE(status)) { |
| 658 | return_ACPI_STATUS |
| 659 | (status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | } |
| 661 | } |
| 662 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 663 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | } |
| 665 | |
| 666 | /* Try next handler in the list */ |
| 667 | |
| 668 | handler_obj = handler_obj->address_space.next; |
| 669 | } |
| 670 | } |
| 671 | |
| 672 | /* |
| 673 | * This node does not have the handler we need; |
| 674 | * Pop up one level |
| 675 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 676 | node = acpi_ns_get_parent_node(node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | } |
| 678 | |
| 679 | /* If we get here, there is no handler for this region */ |
| 680 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 681 | ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 682 | "No handler for RegionType %s(%X) (RegionObj %p)\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 683 | acpi_ut_get_region_name(space_id), space_id, |
| 684 | region_obj)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 685 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 686 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 687 | } |