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", |
a2dac7a1 | 179 | ACPI_FORMAT_UINT64(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", |
a2dac7a1 | 200 | bit_width, function, ACPI_FORMAT_UINT64(address))); |
4be44fcd LB |
201 | |
202 | /* | |
203 | * Perform the memory read or write | |
204 | * | |
205 | * Note: For machines that do not support non-aligned transfers, the target | |
73a3090a | 206 | * address was checked for alignment above. We do not attempt to break the |
4be44fcd LB |
207 | * transfer up into smaller (byte-size) chunks because the AML specifically |
208 | * asked for a transfer width that the hardware may require. | |
209 | */ | |
1da177e4 LT |
210 | switch (function) { |
211 | case ACPI_READ: | |
212 | ||
213 | *value = 0; | |
214 | switch (bit_width) { | |
215 | case 8: | |
5df7e6cb | 216 | *value = (u64) ACPI_GET8(logical_addr_ptr); |
1da177e4 LT |
217 | break; |
218 | ||
219 | case 16: | |
5df7e6cb | 220 | *value = (u64) ACPI_GET16(logical_addr_ptr); |
1da177e4 LT |
221 | break; |
222 | ||
223 | case 32: | |
5df7e6cb | 224 | *value = (u64) ACPI_GET32(logical_addr_ptr); |
1da177e4 LT |
225 | break; |
226 | ||
1da177e4 | 227 | case 64: |
5df7e6cb | 228 | *value = (u64) ACPI_GET64(logical_addr_ptr); |
1da177e4 | 229 | break; |
59fa8505 | 230 | |
1da177e4 LT |
231 | default: |
232 | /* bit_width was already validated */ | |
233 | break; | |
234 | } | |
235 | break; | |
236 | ||
237 | case ACPI_WRITE: | |
238 | ||
239 | switch (bit_width) { | |
240 | case 8: | |
57bf6aef | 241 | ACPI_SET8(logical_addr_ptr, *value); |
1da177e4 LT |
242 | break; |
243 | ||
244 | case 16: | |
57bf6aef | 245 | ACPI_SET16(logical_addr_ptr, *value); |
1da177e4 LT |
246 | break; |
247 | ||
248 | case 32: | |
57bf6aef | 249 | ACPI_SET32(logical_addr_ptr, *value); |
1da177e4 LT |
250 | break; |
251 | ||
1da177e4 | 252 | case 64: |
57bf6aef | 253 | ACPI_SET64(logical_addr_ptr, *value); |
1da177e4 | 254 | break; |
1da177e4 LT |
255 | |
256 | default: | |
257 | /* bit_width was already validated */ | |
258 | break; | |
259 | } | |
260 | break; | |
261 | ||
262 | default: | |
263 | status = AE_BAD_PARAMETER; | |
264 | break; | |
265 | } | |
266 | ||
4be44fcd | 267 | return_ACPI_STATUS(status); |
1da177e4 LT |
268 | } |
269 | ||
1da177e4 LT |
270 | /******************************************************************************* |
271 | * | |
272 | * FUNCTION: acpi_ex_system_io_space_handler | |
273 | * | |
ba494bee BM |
274 | * PARAMETERS: function - Read or Write operation |
275 | * address - Where in the space to read or write | |
1da177e4 | 276 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 277 | * value - Pointer to in or out value |
1da177e4 LT |
278 | * handler_context - Pointer to Handler's context |
279 | * region_context - Pointer to context specific to the | |
280 | * accessed region | |
281 | * | |
282 | * RETURN: Status | |
283 | * | |
284 | * DESCRIPTION: Handler for the System IO address space (Op Region) | |
285 | * | |
286 | ******************************************************************************/ | |
287 | ||
288 | acpi_status | |
4be44fcd LB |
289 | acpi_ex_system_io_space_handler(u32 function, |
290 | acpi_physical_address address, | |
291 | u32 bit_width, | |
5df7e6cb | 292 | u64 *value, |
4be44fcd | 293 | void *handler_context, void *region_context) |
1da177e4 | 294 | { |
4be44fcd LB |
295 | acpi_status status = AE_OK; |
296 | u32 value32; | |
1da177e4 | 297 | |
b229cf92 | 298 | ACPI_FUNCTION_TRACE(ex_system_io_space_handler); |
1da177e4 | 299 | |
4be44fcd | 300 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
b27d6597 | 301 | "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n", |
a2dac7a1 | 302 | bit_width, function, ACPI_FORMAT_UINT64(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 | * | |
ba494bee BM |
332 | * PARAMETERS: function - Read or Write operation |
333 | * address - Where in the space to read or write | |
1da177e4 | 334 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 335 | * value - Pointer to in or out value |
1da177e4 LT |
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; | |
1da177e4 | 356 | |
b229cf92 | 357 | ACPI_FUNCTION_TRACE(ex_pci_config_space_handler); |
1da177e4 LT |
358 | |
359 | /* | |
360 | * The arguments to acpi_os(Read|Write)pci_configuration are: | |
361 | * | |
362 | * pci_segment is the PCI bus segment range 0-31 | |
363 | * pci_bus is the PCI bus number range 0-255 | |
364 | * pci_device is the PCI device number range 0-31 | |
365 | * pci_function is the PCI device function number | |
366 | * pci_register is the Config space register range 0-255 bytes | |
367 | * | |
ba494bee | 368 | * value - input value for write, output address for read |
1da177e4 LT |
369 | * |
370 | */ | |
4be44fcd | 371 | pci_id = (struct acpi_pci_id *)region_context; |
1da177e4 LT |
372 | pci_register = (u16) (u32) address; |
373 | ||
4be44fcd | 374 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
b27d6597 | 375 | "Pci-Config %u (%u) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", |
4be44fcd LB |
376 | function, bit_width, pci_id->segment, pci_id->bus, |
377 | pci_id->device, pci_id->function, pci_register)); | |
1da177e4 LT |
378 | |
379 | switch (function) { | |
380 | case ACPI_READ: | |
381 | ||
4be44fcd | 382 | status = acpi_os_read_pci_configuration(pci_id, pci_register, |
c5f0231e | 383 | value, bit_width); |
1da177e4 LT |
384 | break; |
385 | ||
386 | case ACPI_WRITE: | |
387 | ||
4be44fcd LB |
388 | status = acpi_os_write_pci_configuration(pci_id, pci_register, |
389 | *value, bit_width); | |
1da177e4 LT |
390 | break; |
391 | ||
392 | default: | |
393 | ||
394 | status = AE_BAD_PARAMETER; | |
395 | break; | |
396 | } | |
397 | ||
4be44fcd | 398 | return_ACPI_STATUS(status); |
1da177e4 LT |
399 | } |
400 | ||
1da177e4 LT |
401 | /******************************************************************************* |
402 | * | |
403 | * FUNCTION: acpi_ex_cmos_space_handler | |
404 | * | |
ba494bee BM |
405 | * PARAMETERS: function - Read or Write operation |
406 | * address - Where in the space to read or write | |
1da177e4 | 407 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 408 | * value - Pointer to in or out value |
1da177e4 LT |
409 | * handler_context - Pointer to Handler's context |
410 | * region_context - Pointer to context specific to the | |
411 | * accessed region | |
412 | * | |
413 | * RETURN: Status | |
414 | * | |
415 | * DESCRIPTION: Handler for the CMOS address space (Op Region) | |
416 | * | |
417 | ******************************************************************************/ | |
418 | ||
419 | acpi_status | |
4be44fcd LB |
420 | acpi_ex_cmos_space_handler(u32 function, |
421 | acpi_physical_address address, | |
422 | u32 bit_width, | |
5df7e6cb | 423 | u64 *value, |
4be44fcd | 424 | void *handler_context, void *region_context) |
1da177e4 | 425 | { |
4be44fcd | 426 | acpi_status status = AE_OK; |
1da177e4 | 427 | |
b229cf92 | 428 | ACPI_FUNCTION_TRACE(ex_cmos_space_handler); |
1da177e4 | 429 | |
4be44fcd | 430 | return_ACPI_STATUS(status); |
1da177e4 LT |
431 | } |
432 | ||
1da177e4 LT |
433 | /******************************************************************************* |
434 | * | |
435 | * FUNCTION: acpi_ex_pci_bar_space_handler | |
436 | * | |
ba494bee BM |
437 | * PARAMETERS: function - Read or Write operation |
438 | * address - Where in the space to read or write | |
1da177e4 | 439 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 440 | * value - Pointer to in or out value |
1da177e4 LT |
441 | * handler_context - Pointer to Handler's context |
442 | * region_context - Pointer to context specific to the | |
443 | * accessed region | |
444 | * | |
445 | * RETURN: Status | |
446 | * | |
447 | * DESCRIPTION: Handler for the PCI bar_target address space (Op Region) | |
448 | * | |
449 | ******************************************************************************/ | |
450 | ||
451 | acpi_status | |
4be44fcd LB |
452 | acpi_ex_pci_bar_space_handler(u32 function, |
453 | acpi_physical_address address, | |
454 | u32 bit_width, | |
5df7e6cb | 455 | u64 *value, |
4be44fcd | 456 | void *handler_context, void *region_context) |
1da177e4 | 457 | { |
4be44fcd | 458 | acpi_status status = AE_OK; |
1da177e4 | 459 | |
b229cf92 | 460 | ACPI_FUNCTION_TRACE(ex_pci_bar_space_handler); |
1da177e4 | 461 | |
4be44fcd | 462 | return_ACPI_STATUS(status); |
1da177e4 LT |
463 | } |
464 | ||
1da177e4 LT |
465 | /******************************************************************************* |
466 | * | |
467 | * FUNCTION: acpi_ex_data_table_space_handler | |
468 | * | |
ba494bee BM |
469 | * PARAMETERS: function - Read or Write operation |
470 | * address - Where in the space to read or write | |
1da177e4 | 471 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 472 | * value - Pointer to in or out value |
1da177e4 LT |
473 | * handler_context - Pointer to Handler's context |
474 | * region_context - Pointer to context specific to the | |
475 | * accessed region | |
476 | * | |
477 | * RETURN: Status | |
478 | * | |
479 | * DESCRIPTION: Handler for the Data Table address space (Op Region) | |
480 | * | |
481 | ******************************************************************************/ | |
482 | ||
483 | acpi_status | |
4be44fcd LB |
484 | acpi_ex_data_table_space_handler(u32 function, |
485 | acpi_physical_address address, | |
486 | u32 bit_width, | |
5df7e6cb | 487 | u64 *value, |
4be44fcd | 488 | void *handler_context, void *region_context) |
1da177e4 | 489 | { |
b229cf92 | 490 | ACPI_FUNCTION_TRACE(ex_data_table_space_handler); |
1da177e4 | 491 | |
c1637e9c BM |
492 | /* |
493 | * Perform the memory read or write. The bit_width was already | |
494 | * validated. | |
495 | */ | |
1da177e4 LT |
496 | switch (function) { |
497 | case ACPI_READ: | |
498 | ||
4119532c BM |
499 | ACPI_MEMCPY(ACPI_CAST_PTR(char, value), |
500 | ACPI_PHYSADDR_TO_PTR(address), | |
501 | ACPI_DIV_8(bit_width)); | |
1da177e4 LT |
502 | break; |
503 | ||
504 | case ACPI_WRITE: | |
c1637e9c BM |
505 | |
506 | ACPI_MEMCPY(ACPI_PHYSADDR_TO_PTR(address), | |
507 | ACPI_CAST_PTR(char, value), ACPI_DIV_8(bit_width)); | |
508 | break; | |
509 | ||
1da177e4 LT |
510 | default: |
511 | ||
c1637e9c | 512 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
1da177e4 LT |
513 | } |
514 | ||
4119532c | 515 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 516 | } |