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 | 4a90c7e | 2006-01-13 16:22:00 -0500 | [diff] [blame] | 8 | * Copyright (C) 2000 - 2006, R. Byron Moore |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions, and the following disclaimer, |
| 16 | * without modification. |
| 17 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer |
| 18 | * substantially similar to the "NO WARRANTY" disclaimer below |
| 19 | * ("Disclaimer") and any redistribution must be conditioned upon |
| 20 | * including a substantially similar Disclaimer requirement for further |
| 21 | * binary redistribution. |
| 22 | * 3. Neither the names of the above-listed copyright holders nor the names |
| 23 | * of any contributors may be used to endorse or promote products derived |
| 24 | * from this software without specific prior written permission. |
| 25 | * |
| 26 | * Alternatively, this software may be distributed under the terms of the |
| 27 | * GNU General Public License ("GPL") version 2 as published by the Free |
| 28 | * Software Foundation. |
| 29 | * |
| 30 | * NO WARRANTY |
| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR |
| 34 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 35 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 36 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 37 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 38 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 39 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 40 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 41 | * POSSIBILITY OF SUCH DAMAGES. |
| 42 | */ |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <acpi/acpi.h> |
| 45 | #include <acpi/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 | |
| 51 | /******************************************************************************* |
| 52 | * |
| 53 | * FUNCTION: acpi_ev_system_memory_region_setup |
| 54 | * |
| 55 | * PARAMETERS: Handle - Region we are interested in |
| 56 | * Function - Start or stop |
| 57 | * handler_context - Address space handler context |
| 58 | * region_context - Region specific context |
| 59 | * |
| 60 | * RETURN: Status |
| 61 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 62 | * DESCRIPTION: Setup a system_memory operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | * |
| 64 | ******************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 66 | acpi_ev_system_memory_region_setup(acpi_handle handle, |
| 67 | u32 function, |
| 68 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 70 | union acpi_operand_object *region_desc = |
| 71 | (union acpi_operand_object *)handle; |
| 72 | struct acpi_mem_space_context *local_region_context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 74 | ACPI_FUNCTION_TRACE(ev_system_memory_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
| 76 | if (function == ACPI_REGION_DEACTIVATE) { |
| 77 | if (*region_context) { |
Bob Moore | 793c238 | 2006-03-31 00:00:00 -0500 | [diff] [blame] | 78 | local_region_context = |
| 79 | (struct acpi_mem_space_context *)*region_context; |
| 80 | |
| 81 | /* Delete a cached mapping if present */ |
| 82 | |
| 83 | if (local_region_context->mapped_length) { |
| 84 | acpi_os_unmap_memory(local_region_context-> |
| 85 | mapped_logical_address, |
| 86 | local_region_context-> |
| 87 | mapped_length); |
| 88 | } |
| 89 | ACPI_FREE(local_region_context); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | *region_context = NULL; |
| 91 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 92 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | } |
| 94 | |
| 95 | /* Create a new context */ |
| 96 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 97 | local_region_context = |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 98 | ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_mem_space_context)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | if (!(local_region_context)) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 100 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | } |
| 102 | |
| 103 | /* Save the region length and address for use in the handler */ |
| 104 | |
| 105 | local_region_context->length = region_desc->region.length; |
| 106 | local_region_context->address = region_desc->region.address; |
| 107 | |
| 108 | *region_context = local_region_context; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 109 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | } |
| 111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | /******************************************************************************* |
| 113 | * |
| 114 | * FUNCTION: acpi_ev_io_space_region_setup |
| 115 | * |
| 116 | * PARAMETERS: Handle - Region we are interested in |
| 117 | * Function - Start or stop |
| 118 | * handler_context - Address space handler context |
| 119 | * region_context - Region specific context |
| 120 | * |
| 121 | * RETURN: Status |
| 122 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 123 | * DESCRIPTION: Setup a IO operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | * |
| 125 | ******************************************************************************/ |
| 126 | |
| 127 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 128 | acpi_ev_io_space_region_setup(acpi_handle handle, |
| 129 | u32 function, |
| 130 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | { |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 132 | ACPI_FUNCTION_TRACE(ev_io_space_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
| 134 | if (function == ACPI_REGION_DEACTIVATE) { |
| 135 | *region_context = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 136 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | *region_context = handler_context; |
| 138 | } |
| 139 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 140 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | } |
| 142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | /******************************************************************************* |
| 144 | * |
| 145 | * FUNCTION: acpi_ev_pci_config_region_setup |
| 146 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 147 | * PARAMETERS: Handle - Region we are interested in |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | * Function - Start or stop |
| 149 | * handler_context - Address space handler context |
| 150 | * region_context - Region specific context |
| 151 | * |
| 152 | * RETURN: Status |
| 153 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 154 | * DESCRIPTION: Setup a PCI_Config operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | * |
| 156 | * MUTEX: Assumes namespace is not locked |
| 157 | * |
| 158 | ******************************************************************************/ |
| 159 | |
| 160 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 161 | acpi_ev_pci_config_region_setup(acpi_handle handle, |
| 162 | u32 function, |
| 163 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 164 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 165 | acpi_status status = AE_OK; |
| 166 | acpi_integer pci_value; |
| 167 | struct acpi_pci_id *pci_id = *region_context; |
| 168 | union acpi_operand_object *handler_obj; |
| 169 | struct acpi_namespace_node *parent_node; |
| 170 | struct acpi_namespace_node *pci_root_node; |
| 171 | union acpi_operand_object *region_obj = |
| 172 | (union acpi_operand_object *)handle; |
| 173 | struct acpi_device_id object_hID; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 175 | ACPI_FUNCTION_TRACE(ev_pci_config_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | handler_obj = region_obj->region.handler; |
| 178 | if (!handler_obj) { |
| 179 | /* |
| 180 | * No installed handler. This shouldn't happen because the dispatch |
| 181 | * routine checks before we get here, but we check again just in case. |
| 182 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 183 | ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, |
| 184 | "Attempting to init a region %p, with no handler\n", |
| 185 | region_obj)); |
| 186 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | *region_context = NULL; |
| 190 | if (function == ACPI_REGION_DEACTIVATE) { |
| 191 | if (pci_id) { |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 192 | ACPI_FREE(pci_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | } |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 194 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | } |
| 196 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 197 | parent_node = acpi_ns_get_parent_node(region_obj->region.node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | |
| 199 | /* |
| 200 | * Get the _SEG and _BBN values from the device upon which the handler |
| 201 | * is installed. |
| 202 | * |
| 203 | * We need to get the _SEG and _BBN objects relative to the PCI BUS device. |
| 204 | * This is the device the handler has been registered to handle. |
| 205 | */ |
| 206 | |
| 207 | /* |
| 208 | * If the address_space.Node is still pointing to the root, we need |
| 209 | * to scan upward for a PCI Root bridge and re-associate the op_region |
| 210 | * handlers with that device. |
| 211 | */ |
| 212 | if (handler_obj->address_space.node == acpi_gbl_root_node) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | /* Start search from the parent object */ |
| 215 | |
| 216 | pci_root_node = parent_node; |
| 217 | while (pci_root_node != acpi_gbl_root_node) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 218 | status = |
| 219 | acpi_ut_execute_HID(pci_root_node, &object_hID); |
| 220 | if (ACPI_SUCCESS(status)) { |
Robert Moore | 6f42ccf | 2005-05-13 00:00:00 -0400 | [diff] [blame] | 221 | /* |
| 222 | * Got a valid _HID string, check if this is a PCI root. |
| 223 | * New for ACPI 3.0: check for a PCI Express root also. |
| 224 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 225 | if (! |
| 226 | (ACPI_STRNCMP |
| 227 | (object_hID.value, PCI_ROOT_HID_STRING, |
| 228 | sizeof(PCI_ROOT_HID_STRING)) |
| 229 | || |
| 230 | !(ACPI_STRNCMP |
| 231 | (object_hID.value, |
| 232 | PCI_EXPRESS_ROOT_HID_STRING, |
| 233 | sizeof(PCI_EXPRESS_ROOT_HID_STRING))))) |
| 234 | { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 235 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | /* Install a handler for this PCI root bridge */ |
| 237 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 238 | status = |
| 239 | acpi_install_address_space_handler((acpi_handle) pci_root_node, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL); |
| 240 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | if (status == AE_SAME_HANDLER) { |
| 242 | /* |
| 243 | * It is OK if the handler is already installed on the root |
| 244 | * bridge. Still need to return a context object for the |
| 245 | * new PCI_Config operation region, however. |
| 246 | */ |
| 247 | status = AE_OK; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 248 | } else { |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 249 | ACPI_EXCEPTION((AE_INFO, |
| 250 | status, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 251 | "Could not install PciConfig handler for Root Bridge %4.4s", |
Bob Moore | b8e4d89 | 2006-01-27 16:43:00 -0500 | [diff] [blame] | 252 | acpi_ut_get_node_name |
| 253 | (pci_root_node))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | } |
| 255 | } |
| 256 | break; |
| 257 | } |
| 258 | } |
| 259 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 260 | pci_root_node = acpi_ns_get_parent_node(pci_root_node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | /* PCI root bridge not found, use namespace root node */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 264 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | pci_root_node = handler_obj->address_space.node; |
| 266 | } |
| 267 | |
| 268 | /* |
| 269 | * If this region is now initialized, we are done. |
| 270 | * (install_address_space_handler could have initialized it) |
| 271 | */ |
| 272 | if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 273 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | } |
| 275 | |
| 276 | /* Region is still not initialized. Create a new context */ |
| 277 | |
Bob Moore | 8313524 | 2006-10-03 00:00:00 -0400 | [diff] [blame] | 278 | pci_id = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pci_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | if (!pci_id) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 280 | return_ACPI_STATUS(AE_NO_MEMORY); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | /* |
| 284 | * For PCI_Config space access, we need the segment, bus, |
| 285 | * device and function numbers. Acquire them here. |
| 286 | */ |
| 287 | |
| 288 | /* |
| 289 | * Get the PCI device and function numbers from the _ADR object |
| 290 | * contained in the parent's scope. |
| 291 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 292 | status = |
| 293 | acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, parent_node, |
| 294 | &pci_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | |
| 296 | /* |
| 297 | * The default is zero, and since the allocation above zeroed |
| 298 | * the data, just do nothing on failure. |
| 299 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 300 | if (ACPI_SUCCESS(status)) { |
| 301 | pci_id->device = ACPI_HIWORD(ACPI_LODWORD(pci_value)); |
| 302 | pci_id->function = ACPI_LOWORD(ACPI_LODWORD(pci_value)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | /* The PCI segment number comes from the _SEG method */ |
| 306 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 307 | status = |
| 308 | acpi_ut_evaluate_numeric_object(METHOD_NAME__SEG, pci_root_node, |
| 309 | &pci_value); |
| 310 | if (ACPI_SUCCESS(status)) { |
| 311 | pci_id->segment = ACPI_LOWORD(pci_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | /* The PCI bus number comes from the _BBN method */ |
| 315 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 316 | status = |
| 317 | acpi_ut_evaluate_numeric_object(METHOD_NAME__BBN, pci_root_node, |
| 318 | &pci_value); |
| 319 | if (ACPI_SUCCESS(status)) { |
| 320 | pci_id->bus = ACPI_LOWORD(pci_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | /* Complete this device's pci_id */ |
| 324 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 325 | 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] | 326 | |
| 327 | *region_context = pci_id; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 328 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | } |
| 330 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | /******************************************************************************* |
| 332 | * |
| 333 | * FUNCTION: acpi_ev_pci_bar_region_setup |
| 334 | * |
| 335 | * PARAMETERS: Handle - Region we are interested in |
| 336 | * Function - Start or stop |
| 337 | * handler_context - Address space handler context |
| 338 | * region_context - Region specific context |
| 339 | * |
| 340 | * RETURN: Status |
| 341 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 342 | * DESCRIPTION: Setup a pci_bAR operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | * |
| 344 | * MUTEX: Assumes namespace is not locked |
| 345 | * |
| 346 | ******************************************************************************/ |
| 347 | |
| 348 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 349 | acpi_ev_pci_bar_region_setup(acpi_handle handle, |
| 350 | u32 function, |
| 351 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | { |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 353 | ACPI_FUNCTION_TRACE(ev_pci_bar_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 355 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | } |
| 357 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | /******************************************************************************* |
| 359 | * |
| 360 | * FUNCTION: acpi_ev_cmos_region_setup |
| 361 | * |
| 362 | * PARAMETERS: Handle - Region we are interested in |
| 363 | * Function - Start or stop |
| 364 | * handler_context - Address space handler context |
| 365 | * region_context - Region specific context |
| 366 | * |
| 367 | * RETURN: Status |
| 368 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 369 | * DESCRIPTION: Setup a CMOS operation region |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | * |
| 371 | * MUTEX: Assumes namespace is not locked |
| 372 | * |
| 373 | ******************************************************************************/ |
| 374 | |
| 375 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 376 | acpi_ev_cmos_region_setup(acpi_handle handle, |
| 377 | u32 function, |
| 378 | void *handler_context, void **region_context) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | { |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 380 | ACPI_FUNCTION_TRACE(ev_cmos_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 382 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | } |
| 384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | /******************************************************************************* |
| 386 | * |
| 387 | * FUNCTION: acpi_ev_default_region_setup |
| 388 | * |
| 389 | * PARAMETERS: Handle - Region we are interested in |
| 390 | * Function - Start or stop |
| 391 | * handler_context - Address space handler context |
| 392 | * region_context - Region specific context |
| 393 | * |
| 394 | * RETURN: Status |
| 395 | * |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 396 | * DESCRIPTION: Default region initialization |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | * |
| 398 | ******************************************************************************/ |
| 399 | |
| 400 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 401 | acpi_ev_default_region_setup(acpi_handle handle, |
| 402 | u32 function, |
| 403 | void *handler_context, void **region_context) |
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(ev_default_region_setup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | |
| 407 | if (function == ACPI_REGION_DEACTIVATE) { |
| 408 | *region_context = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 409 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | *region_context = handler_context; |
| 411 | } |
| 412 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 413 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | } |
| 415 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | /******************************************************************************* |
| 417 | * |
| 418 | * FUNCTION: acpi_ev_initialize_region |
| 419 | * |
| 420 | * PARAMETERS: region_obj - Region we are initializing |
| 421 | * acpi_ns_locked - Is namespace locked? |
| 422 | * |
| 423 | * RETURN: Status |
| 424 | * |
| 425 | * DESCRIPTION: Initializes the region, finds any _REG methods and saves them |
| 426 | * for execution at a later time |
| 427 | * |
| 428 | * Get the appropriate address space handler for a newly |
| 429 | * created region. |
| 430 | * |
| 431 | * This also performs address space specific initialization. For |
| 432 | * example, PCI regions must have an _ADR object that contains |
| 433 | * a PCI address in the scope of the definition. This address is |
| 434 | * required to perform an access to PCI config space. |
| 435 | * |
| 436 | ******************************************************************************/ |
| 437 | |
| 438 | acpi_status |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 439 | acpi_ev_initialize_region(union acpi_operand_object *region_obj, |
| 440 | u8 acpi_ns_locked) |
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 | union acpi_operand_object *handler_obj; |
| 443 | union acpi_operand_object *obj_desc; |
| 444 | acpi_adr_space_type space_id; |
| 445 | struct acpi_namespace_node *node; |
| 446 | acpi_status status; |
| 447 | struct acpi_namespace_node *method_node; |
| 448 | acpi_name *reg_name_ptr = (acpi_name *) METHOD_NAME__REG; |
| 449 | union acpi_operand_object *region_obj2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 451 | ACPI_FUNCTION_TRACE_U32(ev_initialize_region, acpi_ns_locked); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | |
| 453 | if (!region_obj) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 454 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | if (region_obj->common.flags & AOPOBJ_OBJECT_INITIALIZED) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 458 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | } |
| 460 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 461 | region_obj2 = acpi_ns_get_secondary_object(region_obj); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | if (!region_obj2) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 463 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | } |
| 465 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 466 | node = acpi_ns_get_parent_node(region_obj->region.node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | space_id = region_obj->region.space_id; |
| 468 | |
| 469 | /* Setup defaults */ |
| 470 | |
| 471 | region_obj->region.handler = NULL; |
| 472 | region_obj2->extra.method_REG = NULL; |
| 473 | region_obj->common.flags &= ~(AOPOBJ_SETUP_COMPLETE); |
| 474 | region_obj->common.flags |= AOPOBJ_OBJECT_INITIALIZED; |
| 475 | |
| 476 | /* Find any "_REG" method associated with this region definition */ |
| 477 | |
Bob Moore | 4119532 | 2006-05-26 16:36:00 -0400 | [diff] [blame^] | 478 | status = |
| 479 | acpi_ns_search_one_scope(*reg_name_ptr, node, ACPI_TYPE_METHOD, |
| 480 | &method_node); |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 481 | if (ACPI_SUCCESS(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | /* |
| 483 | * The _REG method is optional and there can be only one per region |
| 484 | * definition. This will be executed when the handler is attached |
| 485 | * or removed |
| 486 | */ |
| 487 | region_obj2->extra.method_REG = method_node; |
| 488 | } |
| 489 | |
| 490 | /* |
| 491 | * The following loop depends upon the root Node having no parent |
| 492 | * ie: acpi_gbl_root_node->parent_entry being set to NULL |
| 493 | */ |
| 494 | while (node) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | /* Check to see if a handler exists */ |
| 497 | |
| 498 | handler_obj = NULL; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 499 | obj_desc = acpi_ns_get_attached_object(node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | if (obj_desc) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 501 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | /* Can only be a handler if the object exists */ |
| 503 | |
| 504 | switch (node->type) { |
| 505 | case ACPI_TYPE_DEVICE: |
| 506 | |
| 507 | handler_obj = obj_desc->device.handler; |
| 508 | break; |
| 509 | |
| 510 | case ACPI_TYPE_PROCESSOR: |
| 511 | |
| 512 | handler_obj = obj_desc->processor.handler; |
| 513 | break; |
| 514 | |
| 515 | case ACPI_TYPE_THERMAL: |
| 516 | |
| 517 | handler_obj = obj_desc->thermal_zone.handler; |
| 518 | break; |
| 519 | |
| 520 | default: |
| 521 | /* Ignore other objects */ |
| 522 | break; |
| 523 | } |
| 524 | |
| 525 | while (handler_obj) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 526 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | /* Is this handler of the correct type? */ |
| 528 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 529 | if (handler_obj->address_space.space_id == |
| 530 | space_id) { |
Bob Moore | 52fc0b0 | 2006-10-02 00:00:00 -0400 | [diff] [blame] | 531 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | /* Found correct handler */ |
| 533 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 534 | ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, |
| 535 | "Found handler %p for region %p in obj %p\n", |
| 536 | handler_obj, |
| 537 | region_obj, |
| 538 | obj_desc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 540 | status = |
| 541 | acpi_ev_attach_region(handler_obj, |
| 542 | region_obj, |
| 543 | acpi_ns_locked); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | |
| 545 | /* |
| 546 | * Tell all users that this region is usable by running the _REG |
| 547 | * method |
| 548 | */ |
| 549 | if (acpi_ns_locked) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 550 | status = |
| 551 | acpi_ut_release_mutex |
| 552 | (ACPI_MTX_NAMESPACE); |
| 553 | if (ACPI_FAILURE(status)) { |
| 554 | return_ACPI_STATUS |
| 555 | (status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | } |
| 557 | } |
| 558 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 559 | status = |
| 560 | acpi_ev_execute_reg_method |
| 561 | (region_obj, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
| 563 | if (acpi_ns_locked) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 564 | status = |
| 565 | acpi_ut_acquire_mutex |
| 566 | (ACPI_MTX_NAMESPACE); |
| 567 | if (ACPI_FAILURE(status)) { |
| 568 | return_ACPI_STATUS |
| 569 | (status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 570 | } |
| 571 | } |
| 572 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 573 | return_ACPI_STATUS(AE_OK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | } |
| 575 | |
| 576 | /* Try next handler in the list */ |
| 577 | |
| 578 | handler_obj = handler_obj->address_space.next; |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | /* |
| 583 | * This node does not have the handler we need; |
| 584 | * Pop up one level |
| 585 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 586 | node = acpi_ns_get_parent_node(node); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | } |
| 588 | |
| 589 | /* If we get here, there is no handler for this region */ |
| 590 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 591 | ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, |
Bob Moore | b229cf9 | 2006-04-21 17:15:00 -0400 | [diff] [blame] | 592 | "No handler for RegionType %s(%X) (RegionObj %p)\n", |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 593 | acpi_ut_get_region_name(space_id), space_id, |
| 594 | region_obj)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 596 | return_ACPI_STATUS(AE_NOT_EXIST); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | } |