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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, | |
73 | acpi_integer * value, | |
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: | |
b229cf92 | 108 | ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %d", |
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 | */ | |
4be44fcd LB |
118 | (void)acpi_ut_short_divide((acpi_integer) address, length, NULL, |
119 | &remainder); | |
1da177e4 | 120 | if (remainder != 0) { |
4be44fcd | 121 | return_ACPI_STATUS(AE_AML_ALIGNMENT); |
1da177e4 LT |
122 | } |
123 | #endif | |
124 | ||
125 | /* | |
126 | * Does the request fit into the cached memory mapping? | |
127 | * Is 1) Address below the current mapping? OR | |
128 | * 2) Address beyond the current mapping? | |
129 | */ | |
130 | if ((address < mem_info->mapped_physical_address) || | |
4be44fcd LB |
131 | (((acpi_integer) address + length) > ((acpi_integer) |
132 | mem_info-> | |
133 | mapped_physical_address + | |
134 | mem_info->mapped_length))) { | |
1da177e4 LT |
135 | /* |
136 | * The request cannot be resolved by the current memory mapping; | |
137 | * Delete the existing mapping and create a new one. | |
138 | */ | |
139 | if (mem_info->mapped_length) { | |
52fc0b02 | 140 | |
1da177e4 LT |
141 | /* Valid mapping, delete it */ |
142 | ||
4be44fcd LB |
143 | acpi_os_unmap_memory(mem_info->mapped_logical_address, |
144 | mem_info->mapped_length); | |
1da177e4 LT |
145 | } |
146 | ||
147 | /* | |
d410ee51 BM |
148 | * Attempt to map from the requested address to the end of the region. |
149 | * However, we will never map more than one page, nor will we cross | |
150 | * a page boundary. | |
1da177e4 | 151 | */ |
d410ee51 | 152 | map_length = (acpi_size) |
4be44fcd | 153 | ((mem_info->address + mem_info->length) - address); |
44f6c012 | 154 | |
d410ee51 BM |
155 | /* |
156 | * If mapping the entire remaining portion of the region will cross | |
157 | * a page boundary, just map up to the page boundary, do not cross. | |
158 | * On some systems, crossing a page boundary while mapping regions | |
159 | * can cause warnings if the pages have different attributes | |
160 | * due to resource management | |
161 | */ | |
162 | page_boundary_map_length = | |
163 | ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address; | |
164 | ||
165 | if (!page_boundary_map_length) { | |
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 BM |
177 | ACPI_ERROR((AE_INFO, |
178 | "Could not map memory at %8.8X%8.8X, size %X", | |
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 + | |
4be44fcd LB |
196 | ((acpi_integer) address - |
197 | (acpi_integer) mem_info->mapped_physical_address); | |
198 | ||
199 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
8313524a | 200 | "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n", |
b7f9f042 BM |
201 | bit_width, function, |
202 | ACPI_FORMAT_NATIVE_UINT(address))); | |
4be44fcd LB |
203 | |
204 | /* | |
205 | * Perform the memory read or write | |
206 | * | |
207 | * Note: For machines that do not support non-aligned transfers, the target | |
208 | * address was checked for alignment above. We do not attempt to break the | |
209 | * transfer up into smaller (byte-size) chunks because the AML specifically | |
210 | * asked for a transfer width that the hardware may require. | |
211 | */ | |
1da177e4 LT |
212 | switch (function) { |
213 | case ACPI_READ: | |
214 | ||
215 | *value = 0; | |
216 | switch (bit_width) { | |
217 | case 8: | |
c51a4de8 | 218 | *value = (acpi_integer) ACPI_GET8(logical_addr_ptr); |
1da177e4 LT |
219 | break; |
220 | ||
221 | case 16: | |
c51a4de8 | 222 | *value = (acpi_integer) ACPI_GET16(logical_addr_ptr); |
1da177e4 LT |
223 | break; |
224 | ||
225 | case 32: | |
c51a4de8 | 226 | *value = (acpi_integer) ACPI_GET32(logical_addr_ptr); |
1da177e4 LT |
227 | break; |
228 | ||
1da177e4 | 229 | case 64: |
c51a4de8 | 230 | *value = (acpi_integer) ACPI_GET64(logical_addr_ptr); |
1da177e4 | 231 | break; |
59fa8505 | 232 | |
1da177e4 LT |
233 | default: |
234 | /* bit_width was already validated */ | |
235 | break; | |
236 | } | |
237 | break; | |
238 | ||
239 | case ACPI_WRITE: | |
240 | ||
241 | switch (bit_width) { | |
242 | case 8: | |
c51a4de8 | 243 | ACPI_SET8(logical_addr_ptr) = (u8) * value; |
1da177e4 LT |
244 | break; |
245 | ||
246 | case 16: | |
c51a4de8 | 247 | ACPI_SET16(logical_addr_ptr) = (u16) * value; |
1da177e4 LT |
248 | break; |
249 | ||
250 | case 32: | |
c51a4de8 | 251 | ACPI_SET32(logical_addr_ptr) = (u32) * value; |
1da177e4 LT |
252 | break; |
253 | ||
1da177e4 | 254 | case 64: |
c51a4de8 | 255 | ACPI_SET64(logical_addr_ptr) = (u64) * value; |
1da177e4 | 256 | break; |
1da177e4 LT |
257 | |
258 | default: | |
259 | /* bit_width was already validated */ | |
260 | break; | |
261 | } | |
262 | break; | |
263 | ||
264 | default: | |
265 | status = AE_BAD_PARAMETER; | |
266 | break; | |
267 | } | |
268 | ||
4be44fcd | 269 | return_ACPI_STATUS(status); |
1da177e4 LT |
270 | } |
271 | ||
1da177e4 LT |
272 | /******************************************************************************* |
273 | * | |
274 | * FUNCTION: acpi_ex_system_io_space_handler | |
275 | * | |
276 | * PARAMETERS: Function - Read or Write operation | |
277 | * Address - Where in the space to read or write | |
278 | * bit_width - Field width in bits (8, 16, or 32) | |
279 | * Value - Pointer to in or out value | |
280 | * handler_context - Pointer to Handler's context | |
281 | * region_context - Pointer to context specific to the | |
282 | * accessed region | |
283 | * | |
284 | * RETURN: Status | |
285 | * | |
286 | * DESCRIPTION: Handler for the System IO address space (Op Region) | |
287 | * | |
288 | ******************************************************************************/ | |
289 | ||
290 | acpi_status | |
4be44fcd LB |
291 | acpi_ex_system_io_space_handler(u32 function, |
292 | acpi_physical_address address, | |
293 | u32 bit_width, | |
294 | acpi_integer * value, | |
295 | void *handler_context, void *region_context) | |
1da177e4 | 296 | { |
4be44fcd LB |
297 | acpi_status status = AE_OK; |
298 | u32 value32; | |
1da177e4 | 299 | |
b229cf92 | 300 | ACPI_FUNCTION_TRACE(ex_system_io_space_handler); |
1da177e4 | 301 | |
4be44fcd | 302 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
8313524a | 303 | "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n", |
b7f9f042 BM |
304 | bit_width, function, |
305 | ACPI_FORMAT_NATIVE_UINT(address))); | |
1da177e4 LT |
306 | |
307 | /* Decode the function parameter */ | |
308 | ||
309 | switch (function) { | |
310 | case ACPI_READ: | |
311 | ||
7f071903 | 312 | status = acpi_hw_read_port((acpi_io_address) address, |
4be44fcd | 313 | &value32, bit_width); |
1da177e4 LT |
314 | *value = value32; |
315 | break; | |
316 | ||
317 | case ACPI_WRITE: | |
318 | ||
7f071903 | 319 | status = acpi_hw_write_port((acpi_io_address) address, |
4be44fcd | 320 | (u32) * value, bit_width); |
1da177e4 LT |
321 | break; |
322 | ||
323 | default: | |
324 | status = AE_BAD_PARAMETER; | |
325 | break; | |
326 | } | |
327 | ||
4be44fcd | 328 | return_ACPI_STATUS(status); |
1da177e4 LT |
329 | } |
330 | ||
1da177e4 LT |
331 | /******************************************************************************* |
332 | * | |
333 | * FUNCTION: acpi_ex_pci_config_space_handler | |
334 | * | |
335 | * PARAMETERS: Function - Read or Write operation | |
336 | * Address - Where in the space to read or write | |
337 | * bit_width - Field width in bits (8, 16, or 32) | |
338 | * Value - Pointer to in or out value | |
339 | * handler_context - Pointer to Handler's context | |
340 | * region_context - Pointer to context specific to the | |
341 | * accessed region | |
342 | * | |
343 | * RETURN: Status | |
344 | * | |
345 | * DESCRIPTION: Handler for the PCI Config address space (Op Region) | |
346 | * | |
347 | ******************************************************************************/ | |
348 | ||
349 | acpi_status | |
4be44fcd LB |
350 | acpi_ex_pci_config_space_handler(u32 function, |
351 | acpi_physical_address address, | |
352 | u32 bit_width, | |
353 | acpi_integer * value, | |
354 | void *handler_context, void *region_context) | |
1da177e4 | 355 | { |
4be44fcd LB |
356 | acpi_status status = AE_OK; |
357 | struct acpi_pci_id *pci_id; | |
358 | u16 pci_register; | |
1186974f | 359 | u32 value32; |
1da177e4 | 360 | |
b229cf92 | 361 | ACPI_FUNCTION_TRACE(ex_pci_config_space_handler); |
1da177e4 LT |
362 | |
363 | /* | |
364 | * The arguments to acpi_os(Read|Write)pci_configuration are: | |
365 | * | |
366 | * pci_segment is the PCI bus segment range 0-31 | |
367 | * pci_bus is the PCI bus number range 0-255 | |
368 | * pci_device is the PCI device number range 0-31 | |
369 | * pci_function is the PCI device function number | |
370 | * pci_register is the Config space register range 0-255 bytes | |
371 | * | |
372 | * Value - input value for write, output address for read | |
373 | * | |
374 | */ | |
4be44fcd | 375 | pci_id = (struct acpi_pci_id *)region_context; |
1da177e4 LT |
376 | pci_register = (u16) (u32) address; |
377 | ||
4be44fcd | 378 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
8313524a | 379 | "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", |
4be44fcd LB |
380 | function, bit_width, pci_id->segment, pci_id->bus, |
381 | pci_id->device, pci_id->function, pci_register)); | |
1da177e4 LT |
382 | |
383 | switch (function) { | |
384 | case ACPI_READ: | |
385 | ||
4be44fcd | 386 | status = acpi_os_read_pci_configuration(pci_id, pci_register, |
1186974f ML |
387 | &value32, bit_width); |
388 | *value = value32; | |
1da177e4 LT |
389 | break; |
390 | ||
391 | case ACPI_WRITE: | |
392 | ||
4be44fcd LB |
393 | status = acpi_os_write_pci_configuration(pci_id, pci_register, |
394 | *value, bit_width); | |
1da177e4 LT |
395 | break; |
396 | ||
397 | default: | |
398 | ||
399 | status = AE_BAD_PARAMETER; | |
400 | break; | |
401 | } | |
402 | ||
4be44fcd | 403 | return_ACPI_STATUS(status); |
1da177e4 LT |
404 | } |
405 | ||
1da177e4 LT |
406 | /******************************************************************************* |
407 | * | |
408 | * FUNCTION: acpi_ex_cmos_space_handler | |
409 | * | |
410 | * PARAMETERS: Function - Read or Write operation | |
411 | * Address - Where in the space to read or write | |
412 | * bit_width - Field width in bits (8, 16, or 32) | |
413 | * Value - Pointer to in or out value | |
414 | * handler_context - Pointer to Handler's context | |
415 | * region_context - Pointer to context specific to the | |
416 | * accessed region | |
417 | * | |
418 | * RETURN: Status | |
419 | * | |
420 | * DESCRIPTION: Handler for the CMOS address space (Op Region) | |
421 | * | |
422 | ******************************************************************************/ | |
423 | ||
424 | acpi_status | |
4be44fcd LB |
425 | acpi_ex_cmos_space_handler(u32 function, |
426 | acpi_physical_address address, | |
427 | u32 bit_width, | |
428 | acpi_integer * value, | |
429 | void *handler_context, void *region_context) | |
1da177e4 | 430 | { |
4be44fcd | 431 | acpi_status status = AE_OK; |
1da177e4 | 432 | |
b229cf92 | 433 | ACPI_FUNCTION_TRACE(ex_cmos_space_handler); |
1da177e4 | 434 | |
4be44fcd | 435 | return_ACPI_STATUS(status); |
1da177e4 LT |
436 | } |
437 | ||
1da177e4 LT |
438 | /******************************************************************************* |
439 | * | |
440 | * FUNCTION: acpi_ex_pci_bar_space_handler | |
441 | * | |
442 | * PARAMETERS: Function - Read or Write operation | |
443 | * Address - Where in the space to read or write | |
444 | * bit_width - Field width in bits (8, 16, or 32) | |
445 | * Value - Pointer to in or out value | |
446 | * handler_context - Pointer to Handler's context | |
447 | * region_context - Pointer to context specific to the | |
448 | * accessed region | |
449 | * | |
450 | * RETURN: Status | |
451 | * | |
452 | * DESCRIPTION: Handler for the PCI bar_target address space (Op Region) | |
453 | * | |
454 | ******************************************************************************/ | |
455 | ||
456 | acpi_status | |
4be44fcd LB |
457 | acpi_ex_pci_bar_space_handler(u32 function, |
458 | acpi_physical_address address, | |
459 | u32 bit_width, | |
460 | acpi_integer * value, | |
461 | void *handler_context, void *region_context) | |
1da177e4 | 462 | { |
4be44fcd | 463 | acpi_status status = AE_OK; |
1da177e4 | 464 | |
b229cf92 | 465 | ACPI_FUNCTION_TRACE(ex_pci_bar_space_handler); |
1da177e4 | 466 | |
4be44fcd | 467 | return_ACPI_STATUS(status); |
1da177e4 LT |
468 | } |
469 | ||
1da177e4 LT |
470 | /******************************************************************************* |
471 | * | |
472 | * FUNCTION: acpi_ex_data_table_space_handler | |
473 | * | |
474 | * PARAMETERS: Function - Read or Write operation | |
475 | * Address - Where in the space to read or write | |
476 | * bit_width - Field width in bits (8, 16, or 32) | |
477 | * Value - Pointer to in or out value | |
478 | * handler_context - Pointer to Handler's context | |
479 | * region_context - Pointer to context specific to the | |
480 | * accessed region | |
481 | * | |
482 | * RETURN: Status | |
483 | * | |
484 | * DESCRIPTION: Handler for the Data Table address space (Op Region) | |
485 | * | |
486 | ******************************************************************************/ | |
487 | ||
488 | acpi_status | |
4be44fcd LB |
489 | acpi_ex_data_table_space_handler(u32 function, |
490 | acpi_physical_address address, | |
491 | u32 bit_width, | |
492 | acpi_integer * value, | |
493 | void *handler_context, void *region_context) | |
1da177e4 | 494 | { |
b229cf92 | 495 | ACPI_FUNCTION_TRACE(ex_data_table_space_handler); |
1da177e4 | 496 | |
44f6c012 | 497 | /* Perform the memory read or write */ |
1da177e4 LT |
498 | |
499 | switch (function) { | |
500 | case ACPI_READ: | |
501 | ||
4119532c BM |
502 | ACPI_MEMCPY(ACPI_CAST_PTR(char, value), |
503 | ACPI_PHYSADDR_TO_PTR(address), | |
504 | ACPI_DIV_8(bit_width)); | |
1da177e4 LT |
505 | break; |
506 | ||
507 | case ACPI_WRITE: | |
508 | default: | |
509 | ||
4be44fcd | 510 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
511 | } |
512 | ||
4119532c | 513 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 514 | } |