Commit | Line | Data |
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1da177e4 LT |
1 | /****************************************************************************** |
2 | * | |
3 | * Module Name: exregion - ACPI default op_region (address space) handlers | |
4 | * | |
5 | *****************************************************************************/ | |
6 | ||
7 | /* | |
25f044e6 | 8 | * Copyright (C) 2000 - 2013, Intel Corp. |
1da177e4 LT |
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 | ||
1da177e4 | 44 | #include <acpi/acpi.h> |
e2f7a777 LB |
45 | #include "accommon.h" |
46 | #include "acinterp.h" | |
1da177e4 | 47 | |
1da177e4 | 48 | #define _COMPONENT ACPI_EXECUTER |
4be44fcd | 49 | ACPI_MODULE_NAME("exregion") |
1da177e4 LT |
50 | |
51 | /******************************************************************************* | |
52 | * | |
53 | * FUNCTION: acpi_ex_system_memory_space_handler | |
54 | * | |
ba494bee BM |
55 | * PARAMETERS: function - Read or Write operation |
56 | * address - Where in the space to read or write | |
1da177e4 | 57 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 58 | * value - Pointer to in or out value |
1da177e4 LT |
59 | * handler_context - Pointer to Handler's context |
60 | * region_context - Pointer to context specific to the | |
61 | * accessed region | |
62 | * | |
63 | * RETURN: Status | |
64 | * | |
65 | * DESCRIPTION: Handler for the System Memory address space (Op Region) | |
66 | * | |
67 | ******************************************************************************/ | |
1da177e4 | 68 | acpi_status |
4be44fcd LB |
69 | acpi_ex_system_memory_space_handler(u32 function, |
70 | acpi_physical_address address, | |
71 | u32 bit_width, | |
5df7e6cb | 72 | u64 *value, |
4be44fcd | 73 | void *handler_context, void *region_context) |
1da177e4 | 74 | { |
4be44fcd LB |
75 | acpi_status status = AE_OK; |
76 | void *logical_addr_ptr = NULL; | |
77 | struct acpi_mem_space_context *mem_info = region_context; | |
78 | u32 length; | |
d410ee51 BM |
79 | acpi_size map_length; |
80 | acpi_size page_boundary_map_length; | |
0897831b | 81 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
4be44fcd | 82 | u32 remainder; |
1da177e4 LT |
83 | #endif |
84 | ||
b229cf92 | 85 | ACPI_FUNCTION_TRACE(ex_system_memory_space_handler); |
1da177e4 LT |
86 | |
87 | /* Validate and translate the bit width */ | |
88 | ||
89 | switch (bit_width) { | |
90 | case 8: | |
91 | length = 1; | |
92 | break; | |
93 | ||
94 | case 16: | |
95 | length = 2; | |
96 | break; | |
97 | ||
98 | case 32: | |
99 | length = 4; | |
100 | break; | |
101 | ||
102 | case 64: | |
103 | length = 8; | |
104 | break; | |
105 | ||
106 | default: | |
f6a22b0b | 107 | ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %u", |
b8e4d893 | 108 | bit_width)); |
4be44fcd | 109 | return_ACPI_STATUS(AE_AML_OPERAND_VALUE); |
1da177e4 LT |
110 | } |
111 | ||
0897831b | 112 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
1da177e4 LT |
113 | /* |
114 | * Hardware does not support non-aligned data transfers, we must verify | |
115 | * the request. | |
116 | */ | |
5df7e6cb | 117 | (void)acpi_ut_short_divide((u64) address, length, NULL, &remainder); |
1da177e4 | 118 | if (remainder != 0) { |
4be44fcd | 119 | return_ACPI_STATUS(AE_AML_ALIGNMENT); |
1da177e4 LT |
120 | } |
121 | #endif | |
122 | ||
123 | /* | |
124 | * Does the request fit into the cached memory mapping? | |
125 | * Is 1) Address below the current mapping? OR | |
126 | * 2) Address beyond the current mapping? | |
127 | */ | |
128 | if ((address < mem_info->mapped_physical_address) || | |
5df7e6cb BM |
129 | (((u64) address + length) > ((u64) |
130 | mem_info->mapped_physical_address + | |
131 | mem_info->mapped_length))) { | |
1da177e4 LT |
132 | /* |
133 | * The request cannot be resolved by the current memory mapping; | |
134 | * Delete the existing mapping and create a new one. | |
135 | */ | |
136 | if (mem_info->mapped_length) { | |
52fc0b02 | 137 | |
1da177e4 LT |
138 | /* Valid mapping, delete it */ |
139 | ||
4be44fcd LB |
140 | acpi_os_unmap_memory(mem_info->mapped_logical_address, |
141 | mem_info->mapped_length); | |
1da177e4 LT |
142 | } |
143 | ||
144 | /* | |
75c8044f LZ |
145 | * October 2009: Attempt to map from the requested address to the |
146 | * end of the region. However, we will never map more than one | |
147 | * page, nor will we cross a page boundary. | |
1da177e4 | 148 | */ |
d410ee51 | 149 | map_length = (acpi_size) |
4be44fcd | 150 | ((mem_info->address + mem_info->length) - address); |
44f6c012 | 151 | |
d410ee51 BM |
152 | /* |
153 | * If mapping the entire remaining portion of the region will cross | |
154 | * a page boundary, just map up to the page boundary, do not cross. | |
155 | * On some systems, crossing a page boundary while mapping regions | |
156 | * can cause warnings if the pages have different attributes | |
75c8044f LZ |
157 | * due to resource management. |
158 | * | |
159 | * This has the added benefit of constraining a single mapping to | |
160 | * one page, which is similar to the original code that used a 4k | |
161 | * maximum window. | |
d410ee51 BM |
162 | */ |
163 | page_boundary_map_length = | |
164 | ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address; | |
739dcbb9 | 165 | if (page_boundary_map_length == 0) { |
d410ee51 BM |
166 | page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE; |
167 | } | |
168 | ||
169 | if (map_length > page_boundary_map_length) { | |
170 | map_length = page_boundary_map_length; | |
1da177e4 LT |
171 | } |
172 | ||
173 | /* Create a new mapping starting at the address given */ | |
174 | ||
d410ee51 | 175 | mem_info->mapped_logical_address = acpi_os_map_memory((acpi_physical_address) address, map_length); |
f3d2e786 | 176 | if (!mem_info->mapped_logical_address) { |
b8e4d893 | 177 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 178 | "Could not map memory at 0x%8.8X%8.8X, size %u", |
b7f9f042 | 179 | ACPI_FORMAT_NATIVE_UINT(address), |
d410ee51 | 180 | (u32) map_length)); |
1da177e4 | 181 | mem_info->mapped_length = 0; |
f3d2e786 | 182 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
183 | } |
184 | ||
185 | /* Save the physical address and mapping size */ | |
186 | ||
187 | mem_info->mapped_physical_address = address; | |
d410ee51 | 188 | mem_info->mapped_length = map_length; |
1da177e4 LT |
189 | } |
190 | ||
191 | /* | |
192 | * Generate a logical pointer corresponding to the address we want to | |
193 | * access | |
194 | */ | |
195 | logical_addr_ptr = mem_info->mapped_logical_address + | |
5df7e6cb | 196 | ((u64) address - (u64) mem_info->mapped_physical_address); |
4be44fcd LB |
197 | |
198 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
b27d6597 | 199 | "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n", |
b7f9f042 BM |
200 | bit_width, function, |
201 | ACPI_FORMAT_NATIVE_UINT(address))); | |
4be44fcd LB |
202 | |
203 | /* | |
204 | * Perform the memory read or write | |
205 | * | |
206 | * Note: For machines that do not support non-aligned transfers, the target | |
73a3090a | 207 | * address was checked for alignment above. We do not attempt to break the |
4be44fcd LB |
208 | * transfer up into smaller (byte-size) chunks because the AML specifically |
209 | * asked for a transfer width that the hardware may require. | |
210 | */ | |
1da177e4 LT |
211 | switch (function) { |
212 | case ACPI_READ: | |
213 | ||
214 | *value = 0; | |
215 | switch (bit_width) { | |
216 | case 8: | |
5df7e6cb | 217 | *value = (u64) ACPI_GET8(logical_addr_ptr); |
1da177e4 LT |
218 | break; |
219 | ||
220 | case 16: | |
5df7e6cb | 221 | *value = (u64) ACPI_GET16(logical_addr_ptr); |
1da177e4 LT |
222 | break; |
223 | ||
224 | case 32: | |
5df7e6cb | 225 | *value = (u64) ACPI_GET32(logical_addr_ptr); |
1da177e4 LT |
226 | break; |
227 | ||
1da177e4 | 228 | case 64: |
5df7e6cb | 229 | *value = (u64) ACPI_GET64(logical_addr_ptr); |
1da177e4 | 230 | break; |
59fa8505 | 231 | |
1da177e4 LT |
232 | default: |
233 | /* bit_width was already validated */ | |
234 | break; | |
235 | } | |
236 | break; | |
237 | ||
238 | case ACPI_WRITE: | |
239 | ||
240 | switch (bit_width) { | |
241 | case 8: | |
57bf6aef | 242 | ACPI_SET8(logical_addr_ptr, *value); |
1da177e4 LT |
243 | break; |
244 | ||
245 | case 16: | |
57bf6aef | 246 | ACPI_SET16(logical_addr_ptr, *value); |
1da177e4 LT |
247 | break; |
248 | ||
249 | case 32: | |
57bf6aef | 250 | ACPI_SET32(logical_addr_ptr, *value); |
1da177e4 LT |
251 | break; |
252 | ||
1da177e4 | 253 | case 64: |
57bf6aef | 254 | ACPI_SET64(logical_addr_ptr, *value); |
1da177e4 | 255 | break; |
1da177e4 LT |
256 | |
257 | default: | |
258 | /* bit_width was already validated */ | |
259 | break; | |
260 | } | |
261 | break; | |
262 | ||
263 | default: | |
264 | status = AE_BAD_PARAMETER; | |
265 | break; | |
266 | } | |
267 | ||
4be44fcd | 268 | return_ACPI_STATUS(status); |
1da177e4 LT |
269 | } |
270 | ||
1da177e4 LT |
271 | /******************************************************************************* |
272 | * | |
273 | * FUNCTION: acpi_ex_system_io_space_handler | |
274 | * | |
ba494bee BM |
275 | * PARAMETERS: function - Read or Write operation |
276 | * address - Where in the space to read or write | |
1da177e4 | 277 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 278 | * value - Pointer to in or out value |
1da177e4 LT |
279 | * handler_context - Pointer to Handler's context |
280 | * region_context - Pointer to context specific to the | |
281 | * accessed region | |
282 | * | |
283 | * RETURN: Status | |
284 | * | |
285 | * DESCRIPTION: Handler for the System IO address space (Op Region) | |
286 | * | |
287 | ******************************************************************************/ | |
288 | ||
289 | acpi_status | |
4be44fcd LB |
290 | acpi_ex_system_io_space_handler(u32 function, |
291 | acpi_physical_address address, | |
292 | u32 bit_width, | |
5df7e6cb | 293 | u64 *value, |
4be44fcd | 294 | void *handler_context, void *region_context) |
1da177e4 | 295 | { |
4be44fcd LB |
296 | acpi_status status = AE_OK; |
297 | u32 value32; | |
1da177e4 | 298 | |
b229cf92 | 299 | ACPI_FUNCTION_TRACE(ex_system_io_space_handler); |
1da177e4 | 300 | |
4be44fcd | 301 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
b27d6597 | 302 | "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n", |
b7f9f042 BM |
303 | bit_width, function, |
304 | ACPI_FORMAT_NATIVE_UINT(address))); | |
1da177e4 LT |
305 | |
306 | /* Decode the function parameter */ | |
307 | ||
308 | switch (function) { | |
309 | case ACPI_READ: | |
310 | ||
7f071903 | 311 | status = acpi_hw_read_port((acpi_io_address) address, |
4be44fcd | 312 | &value32, bit_width); |
1da177e4 LT |
313 | *value = value32; |
314 | break; | |
315 | ||
316 | case ACPI_WRITE: | |
317 | ||
7f071903 | 318 | status = acpi_hw_write_port((acpi_io_address) address, |
4be44fcd | 319 | (u32) * value, bit_width); |
1da177e4 LT |
320 | break; |
321 | ||
322 | default: | |
323 | status = AE_BAD_PARAMETER; | |
324 | break; | |
325 | } | |
326 | ||
4be44fcd | 327 | return_ACPI_STATUS(status); |
1da177e4 LT |
328 | } |
329 | ||
1da177e4 LT |
330 | /******************************************************************************* |
331 | * | |
332 | * FUNCTION: acpi_ex_pci_config_space_handler | |
333 | * | |
ba494bee BM |
334 | * PARAMETERS: function - Read or Write operation |
335 | * address - Where in the space to read or write | |
1da177e4 | 336 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 337 | * value - Pointer to in or out value |
1da177e4 LT |
338 | * handler_context - Pointer to Handler's context |
339 | * region_context - Pointer to context specific to the | |
340 | * accessed region | |
341 | * | |
342 | * RETURN: Status | |
343 | * | |
344 | * DESCRIPTION: Handler for the PCI Config address space (Op Region) | |
345 | * | |
346 | ******************************************************************************/ | |
347 | ||
348 | acpi_status | |
4be44fcd LB |
349 | acpi_ex_pci_config_space_handler(u32 function, |
350 | acpi_physical_address address, | |
351 | u32 bit_width, | |
5df7e6cb | 352 | u64 *value, |
4be44fcd | 353 | void *handler_context, void *region_context) |
1da177e4 | 354 | { |
4be44fcd LB |
355 | acpi_status status = AE_OK; |
356 | struct acpi_pci_id *pci_id; | |
357 | u16 pci_register; | |
1da177e4 | 358 | |
b229cf92 | 359 | ACPI_FUNCTION_TRACE(ex_pci_config_space_handler); |
1da177e4 LT |
360 | |
361 | /* | |
362 | * The arguments to acpi_os(Read|Write)pci_configuration are: | |
363 | * | |
364 | * pci_segment is the PCI bus segment range 0-31 | |
365 | * pci_bus is the PCI bus number range 0-255 | |
366 | * pci_device is the PCI device number range 0-31 | |
367 | * pci_function is the PCI device function number | |
368 | * pci_register is the Config space register range 0-255 bytes | |
369 | * | |
ba494bee | 370 | * value - input value for write, output address for read |
1da177e4 LT |
371 | * |
372 | */ | |
4be44fcd | 373 | pci_id = (struct acpi_pci_id *)region_context; |
1da177e4 LT |
374 | pci_register = (u16) (u32) address; |
375 | ||
4be44fcd | 376 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
b27d6597 | 377 | "Pci-Config %u (%u) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", |
4be44fcd LB |
378 | function, bit_width, pci_id->segment, pci_id->bus, |
379 | pci_id->device, pci_id->function, pci_register)); | |
1da177e4 LT |
380 | |
381 | switch (function) { | |
382 | case ACPI_READ: | |
383 | ||
4be44fcd | 384 | status = acpi_os_read_pci_configuration(pci_id, pci_register, |
c5f0231e | 385 | value, bit_width); |
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 | * | |
ba494bee BM |
407 | * PARAMETERS: function - Read or Write operation |
408 | * address - Where in the space to read or write | |
1da177e4 | 409 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 410 | * value - Pointer to in or out value |
1da177e4 LT |
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 | * | |
ba494bee BM |
439 | * PARAMETERS: function - Read or Write operation |
440 | * address - Where in the space to read or write | |
1da177e4 | 441 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 442 | * value - Pointer to in or out value |
1da177e4 LT |
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 | * | |
ba494bee BM |
471 | * PARAMETERS: function - Read or Write operation |
472 | * address - Where in the space to read or write | |
1da177e4 | 473 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 474 | * value - Pointer to in or out value |
1da177e4 LT |
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 | } |