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Commit | Line | Data |
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1da177e4 LT |
1 | |
2 | /****************************************************************************** | |
3 | * | |
4 | * Module Name: exregion - ACPI default op_region (address space) handlers | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
a8357b0c | 9 | * Copyright (C) 2000 - 2010, Intel Corp. |
1da177e4 LT |
10 | * All rights reserved. |
11 | * | |
12 | * Redistribution and use in source and binary forms, with or without | |
13 | * modification, are permitted provided that the following conditions | |
14 | * are met: | |
15 | * 1. Redistributions of source code must retain the above copyright | |
16 | * notice, this list of conditions, and the following disclaimer, | |
17 | * without modification. | |
18 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
19 | * substantially similar to the "NO WARRANTY" disclaimer below | |
20 | * ("Disclaimer") and any redistribution must be conditioned upon | |
21 | * including a substantially similar Disclaimer requirement for further | |
22 | * binary redistribution. | |
23 | * 3. Neither the names of the above-listed copyright holders nor the names | |
24 | * of any contributors may be used to endorse or promote products derived | |
25 | * from this software without specific prior written permission. | |
26 | * | |
27 | * Alternatively, this software may be distributed under the terms of the | |
28 | * GNU General Public License ("GPL") version 2 as published by the Free | |
29 | * Software Foundation. | |
30 | * | |
31 | * NO WARRANTY | |
32 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
33 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
34 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
35 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
36 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
37 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
38 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
39 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
40 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
41 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
42 | * POSSIBILITY OF SUCH DAMAGES. | |
43 | */ | |
44 | ||
1da177e4 | 45 | #include <acpi/acpi.h> |
e2f7a777 LB |
46 | #include "accommon.h" |
47 | #include "acinterp.h" | |
1da177e4 | 48 | |
1da177e4 | 49 | #define _COMPONENT ACPI_EXECUTER |
4be44fcd | 50 | ACPI_MODULE_NAME("exregion") |
1da177e4 LT |
51 | |
52 | /******************************************************************************* | |
53 | * | |
54 | * FUNCTION: acpi_ex_system_memory_space_handler | |
55 | * | |
56 | * PARAMETERS: Function - Read or Write operation | |
57 | * Address - Where in the space to read or write | |
58 | * bit_width - Field width in bits (8, 16, or 32) | |
59 | * Value - Pointer to in or out value | |
60 | * handler_context - Pointer to Handler's context | |
61 | * region_context - Pointer to context specific to the | |
62 | * accessed region | |
63 | * | |
64 | * RETURN: Status | |
65 | * | |
66 | * DESCRIPTION: Handler for the System Memory address space (Op Region) | |
67 | * | |
68 | ******************************************************************************/ | |
1da177e4 | 69 | acpi_status |
4be44fcd LB |
70 | acpi_ex_system_memory_space_handler(u32 function, |
71 | acpi_physical_address address, | |
72 | u32 bit_width, | |
5df7e6cb | 73 | u64 *value, |
4be44fcd | 74 | void *handler_context, void *region_context) |
1da177e4 | 75 | { |
4be44fcd LB |
76 | acpi_status status = AE_OK; |
77 | void *logical_addr_ptr = NULL; | |
78 | struct acpi_mem_space_context *mem_info = region_context; | |
79 | u32 length; | |
d410ee51 BM |
80 | acpi_size map_length; |
81 | acpi_size page_boundary_map_length; | |
0897831b | 82 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
4be44fcd | 83 | u32 remainder; |
1da177e4 LT |
84 | #endif |
85 | ||
b229cf92 | 86 | ACPI_FUNCTION_TRACE(ex_system_memory_space_handler); |
1da177e4 LT |
87 | |
88 | /* Validate and translate the bit width */ | |
89 | ||
90 | switch (bit_width) { | |
91 | case 8: | |
92 | length = 1; | |
93 | break; | |
94 | ||
95 | case 16: | |
96 | length = 2; | |
97 | break; | |
98 | ||
99 | case 32: | |
100 | length = 4; | |
101 | break; | |
102 | ||
103 | case 64: | |
104 | length = 8; | |
105 | break; | |
106 | ||
107 | default: | |
f6a22b0b | 108 | ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %u", |
b8e4d893 | 109 | bit_width)); |
4be44fcd | 110 | return_ACPI_STATUS(AE_AML_OPERAND_VALUE); |
1da177e4 LT |
111 | } |
112 | ||
0897831b | 113 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
1da177e4 LT |
114 | /* |
115 | * Hardware does not support non-aligned data transfers, we must verify | |
116 | * the request. | |
117 | */ | |
5df7e6cb | 118 | (void)acpi_ut_short_divide((u64) address, length, NULL, &remainder); |
1da177e4 | 119 | if (remainder != 0) { |
4be44fcd | 120 | return_ACPI_STATUS(AE_AML_ALIGNMENT); |
1da177e4 LT |
121 | } |
122 | #endif | |
123 | ||
124 | /* | |
125 | * Does the request fit into the cached memory mapping? | |
126 | * Is 1) Address below the current mapping? OR | |
127 | * 2) Address beyond the current mapping? | |
128 | */ | |
129 | if ((address < mem_info->mapped_physical_address) || | |
5df7e6cb BM |
130 | (((u64) address + length) > ((u64) |
131 | mem_info->mapped_physical_address + | |
132 | mem_info->mapped_length))) { | |
1da177e4 LT |
133 | /* |
134 | * The request cannot be resolved by the current memory mapping; | |
135 | * Delete the existing mapping and create a new one. | |
136 | */ | |
137 | if (mem_info->mapped_length) { | |
52fc0b02 | 138 | |
1da177e4 LT |
139 | /* Valid mapping, delete it */ |
140 | ||
4be44fcd LB |
141 | acpi_os_unmap_memory(mem_info->mapped_logical_address, |
142 | mem_info->mapped_length); | |
1da177e4 LT |
143 | } |
144 | ||
145 | /* | |
d410ee51 BM |
146 | * Attempt to map from the requested address to the end of the region. |
147 | * However, we will never map more than one page, nor will we cross | |
148 | * a page boundary. | |
1da177e4 | 149 | */ |
d410ee51 | 150 | map_length = (acpi_size) |
4be44fcd | 151 | ((mem_info->address + mem_info->length) - address); |
44f6c012 | 152 | |
d410ee51 BM |
153 | /* |
154 | * If mapping the entire remaining portion of the region will cross | |
155 | * a page boundary, just map up to the page boundary, do not cross. | |
156 | * On some systems, crossing a page boundary while mapping regions | |
157 | * can cause warnings if the pages have different attributes | |
158 | * due to resource management | |
159 | */ | |
160 | page_boundary_map_length = | |
161 | ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address; | |
162 | ||
163 | if (!page_boundary_map_length) { | |
164 | page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE; | |
165 | } | |
166 | ||
167 | if (map_length > page_boundary_map_length) { | |
168 | map_length = page_boundary_map_length; | |
1da177e4 LT |
169 | } |
170 | ||
171 | /* Create a new mapping starting at the address given */ | |
172 | ||
d410ee51 | 173 | mem_info->mapped_logical_address = acpi_os_map_memory((acpi_physical_address) address, map_length); |
f3d2e786 | 174 | if (!mem_info->mapped_logical_address) { |
b8e4d893 | 175 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 176 | "Could not map memory at 0x%8.8X%8.8X, size %u", |
b7f9f042 | 177 | ACPI_FORMAT_NATIVE_UINT(address), |
d410ee51 | 178 | (u32) map_length)); |
1da177e4 | 179 | mem_info->mapped_length = 0; |
f3d2e786 | 180 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
181 | } |
182 | ||
183 | /* Save the physical address and mapping size */ | |
184 | ||
185 | mem_info->mapped_physical_address = address; | |
d410ee51 | 186 | mem_info->mapped_length = map_length; |
1da177e4 LT |
187 | } |
188 | ||
189 | /* | |
190 | * Generate a logical pointer corresponding to the address we want to | |
191 | * access | |
192 | */ | |
193 | logical_addr_ptr = mem_info->mapped_logical_address + | |
5df7e6cb | 194 | ((u64) address - (u64) mem_info->mapped_physical_address); |
4be44fcd LB |
195 | |
196 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
b27d6597 | 197 | "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n", |
b7f9f042 BM |
198 | bit_width, function, |
199 | ACPI_FORMAT_NATIVE_UINT(address))); | |
4be44fcd LB |
200 | |
201 | /* | |
202 | * Perform the memory read or write | |
203 | * | |
204 | * Note: For machines that do not support non-aligned transfers, the target | |
205 | * address was checked for alignment above. We do not attempt to break the | |
206 | * transfer up into smaller (byte-size) chunks because the AML specifically | |
207 | * asked for a transfer width that the hardware may require. | |
208 | */ | |
1da177e4 LT |
209 | switch (function) { |
210 | case ACPI_READ: | |
211 | ||
212 | *value = 0; | |
213 | switch (bit_width) { | |
214 | case 8: | |
5df7e6cb | 215 | *value = (u64) ACPI_GET8(logical_addr_ptr); |
1da177e4 LT |
216 | break; |
217 | ||
218 | case 16: | |
5df7e6cb | 219 | *value = (u64) ACPI_GET16(logical_addr_ptr); |
1da177e4 LT |
220 | break; |
221 | ||
222 | case 32: | |
5df7e6cb | 223 | *value = (u64) ACPI_GET32(logical_addr_ptr); |
1da177e4 LT |
224 | break; |
225 | ||
1da177e4 | 226 | case 64: |
5df7e6cb | 227 | *value = (u64) ACPI_GET64(logical_addr_ptr); |
1da177e4 | 228 | break; |
59fa8505 | 229 | |
1da177e4 LT |
230 | default: |
231 | /* bit_width was already validated */ | |
232 | break; | |
233 | } | |
234 | break; | |
235 | ||
236 | case ACPI_WRITE: | |
237 | ||
238 | switch (bit_width) { | |
239 | case 8: | |
c51a4de8 | 240 | ACPI_SET8(logical_addr_ptr) = (u8) * value; |
1da177e4 LT |
241 | break; |
242 | ||
243 | case 16: | |
c51a4de8 | 244 | ACPI_SET16(logical_addr_ptr) = (u16) * value; |
1da177e4 LT |
245 | break; |
246 | ||
247 | case 32: | |
c51a4de8 | 248 | ACPI_SET32(logical_addr_ptr) = (u32) * value; |
1da177e4 LT |
249 | break; |
250 | ||
1da177e4 | 251 | case 64: |
c51a4de8 | 252 | ACPI_SET64(logical_addr_ptr) = (u64) * value; |
1da177e4 | 253 | break; |
1da177e4 LT |
254 | |
255 | default: | |
256 | /* bit_width was already validated */ | |
257 | break; | |
258 | } | |
259 | break; | |
260 | ||
261 | default: | |
262 | status = AE_BAD_PARAMETER; | |
263 | break; | |
264 | } | |
265 | ||
4be44fcd | 266 | return_ACPI_STATUS(status); |
1da177e4 LT |
267 | } |
268 | ||
1da177e4 LT |
269 | /******************************************************************************* |
270 | * | |
271 | * FUNCTION: acpi_ex_system_io_space_handler | |
272 | * | |
273 | * PARAMETERS: Function - Read or Write operation | |
274 | * Address - Where in the space to read or write | |
275 | * bit_width - Field width in bits (8, 16, or 32) | |
276 | * Value - Pointer to in or out value | |
277 | * handler_context - Pointer to Handler's context | |
278 | * region_context - Pointer to context specific to the | |
279 | * accessed region | |
280 | * | |
281 | * RETURN: Status | |
282 | * | |
283 | * DESCRIPTION: Handler for the System IO address space (Op Region) | |
284 | * | |
285 | ******************************************************************************/ | |
286 | ||
287 | acpi_status | |
4be44fcd LB |
288 | acpi_ex_system_io_space_handler(u32 function, |
289 | acpi_physical_address address, | |
290 | u32 bit_width, | |
5df7e6cb | 291 | u64 *value, |
4be44fcd | 292 | void *handler_context, void *region_context) |
1da177e4 | 293 | { |
4be44fcd LB |
294 | acpi_status status = AE_OK; |
295 | u32 value32; | |
1da177e4 | 296 | |
b229cf92 | 297 | ACPI_FUNCTION_TRACE(ex_system_io_space_handler); |
1da177e4 | 298 | |
4be44fcd | 299 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
b27d6597 | 300 | "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n", |
b7f9f042 BM |
301 | bit_width, function, |
302 | ACPI_FORMAT_NATIVE_UINT(address))); | |
1da177e4 LT |
303 | |
304 | /* Decode the function parameter */ | |
305 | ||
306 | switch (function) { | |
307 | case ACPI_READ: | |
308 | ||
7f071903 | 309 | status = acpi_hw_read_port((acpi_io_address) address, |
4be44fcd | 310 | &value32, bit_width); |
1da177e4 LT |
311 | *value = value32; |
312 | break; | |
313 | ||
314 | case ACPI_WRITE: | |
315 | ||
7f071903 | 316 | status = acpi_hw_write_port((acpi_io_address) address, |
4be44fcd | 317 | (u32) * value, bit_width); |
1da177e4 LT |
318 | break; |
319 | ||
320 | default: | |
321 | status = AE_BAD_PARAMETER; | |
322 | break; | |
323 | } | |
324 | ||
4be44fcd | 325 | return_ACPI_STATUS(status); |
1da177e4 LT |
326 | } |
327 | ||
1da177e4 LT |
328 | /******************************************************************************* |
329 | * | |
330 | * FUNCTION: acpi_ex_pci_config_space_handler | |
331 | * | |
332 | * PARAMETERS: Function - Read or Write operation | |
333 | * Address - Where in the space to read or write | |
334 | * bit_width - Field width in bits (8, 16, or 32) | |
335 | * Value - Pointer to in or out value | |
336 | * handler_context - Pointer to Handler's context | |
337 | * region_context - Pointer to context specific to the | |
338 | * accessed region | |
339 | * | |
340 | * RETURN: Status | |
341 | * | |
342 | * DESCRIPTION: Handler for the PCI Config address space (Op Region) | |
343 | * | |
344 | ******************************************************************************/ | |
345 | ||
346 | acpi_status | |
4be44fcd LB |
347 | acpi_ex_pci_config_space_handler(u32 function, |
348 | acpi_physical_address address, | |
349 | u32 bit_width, | |
5df7e6cb | 350 | u64 *value, |
4be44fcd | 351 | void *handler_context, void *region_context) |
1da177e4 | 352 | { |
4be44fcd LB |
353 | acpi_status status = AE_OK; |
354 | struct acpi_pci_id *pci_id; | |
355 | u16 pci_register; | |
1186974f | 356 | u32 value32; |
1da177e4 | 357 | |
b229cf92 | 358 | ACPI_FUNCTION_TRACE(ex_pci_config_space_handler); |
1da177e4 LT |
359 | |
360 | /* | |
361 | * The arguments to acpi_os(Read|Write)pci_configuration are: | |
362 | * | |
363 | * pci_segment is the PCI bus segment range 0-31 | |
364 | * pci_bus is the PCI bus number range 0-255 | |
365 | * pci_device is the PCI device number range 0-31 | |
366 | * pci_function is the PCI device function number | |
367 | * pci_register is the Config space register range 0-255 bytes | |
368 | * | |
369 | * Value - input value for write, output address for read | |
370 | * | |
371 | */ | |
4be44fcd | 372 | pci_id = (struct acpi_pci_id *)region_context; |
1da177e4 LT |
373 | pci_register = (u16) (u32) address; |
374 | ||
4be44fcd | 375 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
b27d6597 | 376 | "Pci-Config %u (%u) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", |
4be44fcd LB |
377 | function, bit_width, pci_id->segment, pci_id->bus, |
378 | pci_id->device, pci_id->function, pci_register)); | |
1da177e4 LT |
379 | |
380 | switch (function) { | |
381 | case ACPI_READ: | |
382 | ||
4be44fcd | 383 | status = acpi_os_read_pci_configuration(pci_id, pci_register, |
1186974f ML |
384 | &value32, bit_width); |
385 | *value = value32; | |
1da177e4 LT |
386 | break; |
387 | ||
388 | case ACPI_WRITE: | |
389 | ||
4be44fcd LB |
390 | status = acpi_os_write_pci_configuration(pci_id, pci_register, |
391 | *value, bit_width); | |
1da177e4 LT |
392 | break; |
393 | ||
394 | default: | |
395 | ||
396 | status = AE_BAD_PARAMETER; | |
397 | break; | |
398 | } | |
399 | ||
4be44fcd | 400 | return_ACPI_STATUS(status); |
1da177e4 LT |
401 | } |
402 | ||
1da177e4 LT |
403 | /******************************************************************************* |
404 | * | |
405 | * FUNCTION: acpi_ex_cmos_space_handler | |
406 | * | |
407 | * PARAMETERS: Function - Read or Write operation | |
408 | * Address - Where in the space to read or write | |
409 | * bit_width - Field width in bits (8, 16, or 32) | |
410 | * Value - Pointer to in or out value | |
411 | * handler_context - Pointer to Handler's context | |
412 | * region_context - Pointer to context specific to the | |
413 | * accessed region | |
414 | * | |
415 | * RETURN: Status | |
416 | * | |
417 | * DESCRIPTION: Handler for the CMOS address space (Op Region) | |
418 | * | |
419 | ******************************************************************************/ | |
420 | ||
421 | acpi_status | |
4be44fcd LB |
422 | acpi_ex_cmos_space_handler(u32 function, |
423 | acpi_physical_address address, | |
424 | u32 bit_width, | |
5df7e6cb | 425 | u64 *value, |
4be44fcd | 426 | void *handler_context, void *region_context) |
1da177e4 | 427 | { |
4be44fcd | 428 | acpi_status status = AE_OK; |
1da177e4 | 429 | |
b229cf92 | 430 | ACPI_FUNCTION_TRACE(ex_cmos_space_handler); |
1da177e4 | 431 | |
4be44fcd | 432 | return_ACPI_STATUS(status); |
1da177e4 LT |
433 | } |
434 | ||
1da177e4 LT |
435 | /******************************************************************************* |
436 | * | |
437 | * FUNCTION: acpi_ex_pci_bar_space_handler | |
438 | * | |
439 | * PARAMETERS: Function - Read or Write operation | |
440 | * Address - Where in the space to read or write | |
441 | * bit_width - Field width in bits (8, 16, or 32) | |
442 | * Value - Pointer to in or out value | |
443 | * handler_context - Pointer to Handler's context | |
444 | * region_context - Pointer to context specific to the | |
445 | * accessed region | |
446 | * | |
447 | * RETURN: Status | |
448 | * | |
449 | * DESCRIPTION: Handler for the PCI bar_target address space (Op Region) | |
450 | * | |
451 | ******************************************************************************/ | |
452 | ||
453 | acpi_status | |
4be44fcd LB |
454 | acpi_ex_pci_bar_space_handler(u32 function, |
455 | acpi_physical_address address, | |
456 | u32 bit_width, | |
5df7e6cb | 457 | u64 *value, |
4be44fcd | 458 | void *handler_context, void *region_context) |
1da177e4 | 459 | { |
4be44fcd | 460 | acpi_status status = AE_OK; |
1da177e4 | 461 | |
b229cf92 | 462 | ACPI_FUNCTION_TRACE(ex_pci_bar_space_handler); |
1da177e4 | 463 | |
4be44fcd | 464 | return_ACPI_STATUS(status); |
1da177e4 LT |
465 | } |
466 | ||
1da177e4 LT |
467 | /******************************************************************************* |
468 | * | |
469 | * FUNCTION: acpi_ex_data_table_space_handler | |
470 | * | |
471 | * PARAMETERS: Function - Read or Write operation | |
472 | * Address - Where in the space to read or write | |
473 | * bit_width - Field width in bits (8, 16, or 32) | |
474 | * Value - Pointer to in or out value | |
475 | * handler_context - Pointer to Handler's context | |
476 | * region_context - Pointer to context specific to the | |
477 | * accessed region | |
478 | * | |
479 | * RETURN: Status | |
480 | * | |
481 | * DESCRIPTION: Handler for the Data Table address space (Op Region) | |
482 | * | |
483 | ******************************************************************************/ | |
484 | ||
485 | acpi_status | |
4be44fcd LB |
486 | acpi_ex_data_table_space_handler(u32 function, |
487 | acpi_physical_address address, | |
488 | u32 bit_width, | |
5df7e6cb | 489 | u64 *value, |
4be44fcd | 490 | void *handler_context, void *region_context) |
1da177e4 | 491 | { |
b229cf92 | 492 | ACPI_FUNCTION_TRACE(ex_data_table_space_handler); |
1da177e4 | 493 | |
c1637e9c BM |
494 | /* |
495 | * Perform the memory read or write. The bit_width was already | |
496 | * validated. | |
497 | */ | |
1da177e4 LT |
498 | switch (function) { |
499 | case ACPI_READ: | |
500 | ||
4119532c BM |
501 | ACPI_MEMCPY(ACPI_CAST_PTR(char, value), |
502 | ACPI_PHYSADDR_TO_PTR(address), | |
503 | ACPI_DIV_8(bit_width)); | |
1da177e4 LT |
504 | break; |
505 | ||
506 | case ACPI_WRITE: | |
c1637e9c BM |
507 | |
508 | ACPI_MEMCPY(ACPI_PHYSADDR_TO_PTR(address), | |
509 | ACPI_CAST_PTR(char, value), ACPI_DIV_8(bit_width)); | |
510 | break; | |
511 | ||
1da177e4 LT |
512 | default: |
513 | ||
c1637e9c | 514 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
1da177e4 LT |
515 | } |
516 | ||
4119532c | 517 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 518 | } |