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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 | /****************************************************************************** * * Module Name: exregion - ACPI default Op_region (address space) handlers * $Revision: 61 $ * *****************************************************************************/ /* * Copyright (C) 2000, 2001 R. Byron Moore * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "acpi.h" #include "acinterp.h" #include "amlcode.h" #include "acnamesp.h" #include "achware.h" #include "acevents.h" #define _COMPONENT ACPI_EXECUTER MODULE_NAME ("exregion") /******************************************************************************* * * FUNCTION: Acpi_ex_system_memory_space_handler * * PARAMETERS: Function - Read or Write operation * Address - Where in the space to read or write * Bit_width - Field width in bits (8, 16, or 32) * Value - Pointer to in or out value * Handler_context - Pointer to Handler's context * Region_context - Pointer to context specific to the * accessed region * * RETURN: Status * * DESCRIPTION: Handler for the System Memory address space (Op Region) * ******************************************************************************/ acpi_status acpi_ex_system_memory_space_handler ( u32 function, ACPI_PHYSICAL_ADDRESS address, u32 bit_width, u32 *value, void *handler_context, void *region_context) { acpi_status status = AE_OK; void *logical_addr_ptr = NULL; acpi_mem_space_context *mem_info = region_context; u32 length; FUNCTION_TRACE ("Ex_system_memory_space_handler"); /* Validate and translate the bit width */ switch (bit_width) { case 8: length = 1; break; case 16: length = 2; break; case 32: length = 4; break; default: ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Invalid System_memory width %d\n", bit_width)); return_ACPI_STATUS (AE_AML_OPERAND_VALUE); break; } /* * Does the request fit into the cached memory mapping? * Is 1) Address below the current mapping? OR * 2) Address beyond the current mapping? */ if ((address < mem_info->mapped_physical_address) || (((acpi_integer) address + length) > ((acpi_integer) mem_info->mapped_physical_address + mem_info->mapped_length))) { /* * The request cannot be resolved by the current memory mapping; * Delete the existing mapping and create a new one. */ if (mem_info->mapped_length) { /* Valid mapping, delete it */ acpi_os_unmap_memory (mem_info->mapped_logical_address, mem_info->mapped_length); } mem_info->mapped_length = 0; /* In case of failure below */ /* Create a new mapping starting at the address given */ status = acpi_os_map_memory (address, SYSMEM_REGION_WINDOW_SIZE, (void **) &mem_info->mapped_logical_address); if (ACPI_FAILURE (status)) { return_ACPI_STATUS (status); } /* Save the physical address and mapping size */ mem_info->mapped_physical_address = address; mem_info->mapped_length = SYSMEM_REGION_WINDOW_SIZE; } /* * Generate a logical pointer corresponding to the address we want to * access */ /* TBD: should these pointers go to 64-bit in all cases ? */ logical_addr_ptr = mem_info->mapped_logical_address + ((acpi_integer) address - (acpi_integer) mem_info->mapped_physical_address); ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "System_memory %d (%d width) Address=%8.8X%8.8X\n", function, bit_width, HIDWORD (address), LODWORD (address))); /* Perform the memory read or write */ switch (function) { case ACPI_READ_ADR_SPACE: switch (bit_width) { case 8: *value = (u32)* (u8 *) logical_addr_ptr; break; case 16: MOVE_UNALIGNED16_TO_32 (value, logical_addr_ptr); break; case 32: MOVE_UNALIGNED32_TO_32 (value, logical_addr_ptr); break; } break; case ACPI_WRITE_ADR_SPACE: switch (bit_width) { case 8: *(u8 *) logical_addr_ptr = (u8) *value; break; case 16: MOVE_UNALIGNED16_TO_16 (logical_addr_ptr, value); break; case 32: MOVE_UNALIGNED32_TO_32 (logical_addr_ptr, value); break; } break; default: status = AE_BAD_PARAMETER; break; } return_ACPI_STATUS (status); } /******************************************************************************* * * FUNCTION: Acpi_ex_system_io_space_handler * * PARAMETERS: Function - Read or Write operation * Address - Where in the space to read or write * Bit_width - Field width in bits (8, 16, or 32) * Value - Pointer to in or out value * Handler_context - Pointer to Handler's context * Region_context - Pointer to context specific to the * accessed region * * RETURN: Status * * DESCRIPTION: Handler for the System IO address space (Op Region) * ******************************************************************************/ acpi_status acpi_ex_system_io_space_handler ( u32 function, ACPI_PHYSICAL_ADDRESS address, u32 bit_width, u32 *value, void *handler_context, void *region_context) { acpi_status status = AE_OK; FUNCTION_TRACE ("Ex_system_io_space_handler"); ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "System_iO %d (%d width) Address=%8.8X%8.8X\n", function, bit_width, HIDWORD (address), LODWORD (address))); /* Decode the function parameter */ switch (function) { case ACPI_READ_ADR_SPACE: *value = 0; status = acpi_os_read_port ((ACPI_IO_ADDRESS) address, value, bit_width); break; case ACPI_WRITE_ADR_SPACE: status = acpi_os_write_port ((ACPI_IO_ADDRESS) address, *value, bit_width); break; default: status = AE_BAD_PARAMETER; break; } return_ACPI_STATUS (status); } /******************************************************************************* * * FUNCTION: Acpi_ex_pci_config_space_handler * * PARAMETERS: Function - Read or Write operation * Address - Where in the space to read or write * Bit_width - Field width in bits (8, 16, or 32) * Value - Pointer to in or out value * Handler_context - Pointer to Handler's context * Region_context - Pointer to context specific to the * accessed region * * RETURN: Status * * DESCRIPTION: Handler for the PCI Config address space (Op Region) * ******************************************************************************/ acpi_status acpi_ex_pci_config_space_handler ( u32 function, ACPI_PHYSICAL_ADDRESS address, u32 bit_width, u32 *value, void *handler_context, void *region_context) { acpi_status status = AE_OK; acpi_pci_id *pci_id; u16 pci_register; FUNCTION_TRACE ("Ex_pci_config_space_handler"); /* * The arguments to Acpi_os(Read|Write)Pci_cfg(Byte|Word|Dword) are: * * Pci_segment is the PCI bus segment range 0-31 * Pci_bus is the PCI bus number range 0-255 * Pci_device is the PCI device number range 0-31 * Pci_function is the PCI device function number * Pci_register is the Config space register range 0-255 bytes * * Value - input value for write, output address for read * */ pci_id = (acpi_pci_id *) region_context; pci_register = (u16) address; ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Pci_config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", function, bit_width, pci_id->segment, pci_id->bus, pci_id->device, pci_id->function, pci_register)); switch (function) { case ACPI_READ_ADR_SPACE: *value = 0; status = acpi_os_read_pci_configuration (pci_id, pci_register, value, bit_width); break; case ACPI_WRITE_ADR_SPACE: status = acpi_os_write_pci_configuration (pci_id, pci_register, *value, bit_width); break; default: status = AE_BAD_PARAMETER; break; } return_ACPI_STATUS (status); } /******************************************************************************* * * FUNCTION: Acpi_ex_cmos_space_handler * * PARAMETERS: Function - Read or Write operation * Address - Where in the space to read or write * Bit_width - Field width in bits (8, 16, or 32) * Value - Pointer to in or out value * Handler_context - Pointer to Handler's context * Region_context - Pointer to context specific to the * accessed region * * RETURN: Status * * DESCRIPTION: Handler for the CMOS address space (Op Region) * ******************************************************************************/ acpi_status acpi_ex_cmos_space_handler ( u32 function, ACPI_PHYSICAL_ADDRESS address, u32 bit_width, u32 *value, void *handler_context, void *region_context) { acpi_status status = AE_OK; FUNCTION_TRACE ("Ex_cmos_space_handler"); return_ACPI_STATUS (status); } /******************************************************************************* * * FUNCTION: Acpi_ex_pci_bar_space_handler * * PARAMETERS: Function - Read or Write operation * Address - Where in the space to read or write * Bit_width - Field width in bits (8, 16, or 32) * Value - Pointer to in or out value * Handler_context - Pointer to Handler's context * Region_context - Pointer to context specific to the * accessed region * * RETURN: Status * * DESCRIPTION: Handler for the PCI Bar_target address space (Op Region) * ******************************************************************************/ acpi_status acpi_ex_pci_bar_space_handler ( u32 function, ACPI_PHYSICAL_ADDRESS address, u32 bit_width, u32 *value, void *handler_context, void *region_context) { acpi_status status = AE_OK; FUNCTION_TRACE ("Ex_pci_bar_space_handler"); return_ACPI_STATUS (status); } |