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 | /* | |
77848130 | 8 | * Copyright (C) 2000 - 2012, 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 | /* | |
d410ee51 BM |
145 | * Attempt to map from the requested address to the end of the region. |
146 | * However, we will never map more than one page, nor will we cross | |
147 | * 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 | |
157 | * due to resource management | |
158 | */ | |
159 | page_boundary_map_length = | |
160 | ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address; | |
161 | ||
162 | if (!page_boundary_map_length) { | |
163 | page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE; | |
164 | } | |
165 | ||
166 | if (map_length > page_boundary_map_length) { | |
167 | map_length = page_boundary_map_length; | |
1da177e4 LT |
168 | } |
169 | ||
170 | /* Create a new mapping starting at the address given */ | |
171 | ||
d410ee51 | 172 | mem_info->mapped_logical_address = acpi_os_map_memory((acpi_physical_address) address, map_length); |
f3d2e786 | 173 | if (!mem_info->mapped_logical_address) { |
b8e4d893 | 174 | ACPI_ERROR((AE_INFO, |
f6a22b0b | 175 | "Could not map memory at 0x%8.8X%8.8X, size %u", |
b7f9f042 | 176 | ACPI_FORMAT_NATIVE_UINT(address), |
d410ee51 | 177 | (u32) map_length)); |
1da177e4 | 178 | mem_info->mapped_length = 0; |
f3d2e786 | 179 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
180 | } |
181 | ||
182 | /* Save the physical address and mapping size */ | |
183 | ||
184 | mem_info->mapped_physical_address = address; | |
d410ee51 | 185 | mem_info->mapped_length = map_length; |
1da177e4 LT |
186 | } |
187 | ||
188 | /* | |
189 | * Generate a logical pointer corresponding to the address we want to | |
190 | * access | |
191 | */ | |
192 | logical_addr_ptr = mem_info->mapped_logical_address + | |
5df7e6cb | 193 | ((u64) address - (u64) mem_info->mapped_physical_address); |
4be44fcd LB |
194 | |
195 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
b27d6597 | 196 | "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n", |
b7f9f042 BM |
197 | bit_width, function, |
198 | ACPI_FORMAT_NATIVE_UINT(address))); | |
4be44fcd LB |
199 | |
200 | /* | |
201 | * Perform the memory read or write | |
202 | * | |
203 | * Note: For machines that do not support non-aligned transfers, the target | |
73a3090a | 204 | * address was checked for alignment above. We do not attempt to break the |
4be44fcd LB |
205 | * transfer up into smaller (byte-size) chunks because the AML specifically |
206 | * asked for a transfer width that the hardware may require. | |
207 | */ | |
1da177e4 LT |
208 | switch (function) { |
209 | case ACPI_READ: | |
210 | ||
211 | *value = 0; | |
212 | switch (bit_width) { | |
213 | case 8: | |
5df7e6cb | 214 | *value = (u64) ACPI_GET8(logical_addr_ptr); |
1da177e4 LT |
215 | break; |
216 | ||
217 | case 16: | |
5df7e6cb | 218 | *value = (u64) ACPI_GET16(logical_addr_ptr); |
1da177e4 LT |
219 | break; |
220 | ||
221 | case 32: | |
5df7e6cb | 222 | *value = (u64) ACPI_GET32(logical_addr_ptr); |
1da177e4 LT |
223 | break; |
224 | ||
1da177e4 | 225 | case 64: |
5df7e6cb | 226 | *value = (u64) ACPI_GET64(logical_addr_ptr); |
1da177e4 | 227 | break; |
59fa8505 | 228 | |
1da177e4 LT |
229 | default: |
230 | /* bit_width was already validated */ | |
231 | break; | |
232 | } | |
233 | break; | |
234 | ||
235 | case ACPI_WRITE: | |
236 | ||
237 | switch (bit_width) { | |
238 | case 8: | |
c51a4de8 | 239 | ACPI_SET8(logical_addr_ptr) = (u8) * value; |
1da177e4 LT |
240 | break; |
241 | ||
242 | case 16: | |
c51a4de8 | 243 | ACPI_SET16(logical_addr_ptr) = (u16) * value; |
1da177e4 LT |
244 | break; |
245 | ||
246 | case 32: | |
c51a4de8 | 247 | ACPI_SET32(logical_addr_ptr) = (u32) * value; |
1da177e4 LT |
248 | break; |
249 | ||
1da177e4 | 250 | case 64: |
c51a4de8 | 251 | ACPI_SET64(logical_addr_ptr) = (u64) * value; |
1da177e4 | 252 | break; |
1da177e4 LT |
253 | |
254 | default: | |
255 | /* bit_width was already validated */ | |
256 | break; | |
257 | } | |
258 | break; | |
259 | ||
260 | default: | |
261 | status = AE_BAD_PARAMETER; | |
262 | break; | |
263 | } | |
264 | ||
4be44fcd | 265 | return_ACPI_STATUS(status); |
1da177e4 LT |
266 | } |
267 | ||
1da177e4 LT |
268 | /******************************************************************************* |
269 | * | |
270 | * FUNCTION: acpi_ex_system_io_space_handler | |
271 | * | |
ba494bee BM |
272 | * PARAMETERS: function - Read or Write operation |
273 | * address - Where in the space to read or write | |
1da177e4 | 274 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 275 | * value - Pointer to in or out value |
1da177e4 LT |
276 | * handler_context - Pointer to Handler's context |
277 | * region_context - Pointer to context specific to the | |
278 | * accessed region | |
279 | * | |
280 | * RETURN: Status | |
281 | * | |
282 | * DESCRIPTION: Handler for the System IO address space (Op Region) | |
283 | * | |
284 | ******************************************************************************/ | |
285 | ||
286 | acpi_status | |
4be44fcd LB |
287 | acpi_ex_system_io_space_handler(u32 function, |
288 | acpi_physical_address address, | |
289 | u32 bit_width, | |
5df7e6cb | 290 | u64 *value, |
4be44fcd | 291 | void *handler_context, void *region_context) |
1da177e4 | 292 | { |
4be44fcd LB |
293 | acpi_status status = AE_OK; |
294 | u32 value32; | |
1da177e4 | 295 | |
b229cf92 | 296 | ACPI_FUNCTION_TRACE(ex_system_io_space_handler); |
1da177e4 | 297 | |
4be44fcd | 298 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
b27d6597 | 299 | "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n", |
b7f9f042 BM |
300 | bit_width, function, |
301 | ACPI_FORMAT_NATIVE_UINT(address))); | |
1da177e4 LT |
302 | |
303 | /* Decode the function parameter */ | |
304 | ||
305 | switch (function) { | |
306 | case ACPI_READ: | |
307 | ||
7f071903 | 308 | status = acpi_hw_read_port((acpi_io_address) address, |
4be44fcd | 309 | &value32, bit_width); |
1da177e4 LT |
310 | *value = value32; |
311 | break; | |
312 | ||
313 | case ACPI_WRITE: | |
314 | ||
7f071903 | 315 | status = acpi_hw_write_port((acpi_io_address) address, |
4be44fcd | 316 | (u32) * value, bit_width); |
1da177e4 LT |
317 | break; |
318 | ||
319 | default: | |
320 | status = AE_BAD_PARAMETER; | |
321 | break; | |
322 | } | |
323 | ||
4be44fcd | 324 | return_ACPI_STATUS(status); |
1da177e4 LT |
325 | } |
326 | ||
1da177e4 LT |
327 | /******************************************************************************* |
328 | * | |
329 | * FUNCTION: acpi_ex_pci_config_space_handler | |
330 | * | |
ba494bee BM |
331 | * PARAMETERS: function - Read or Write operation |
332 | * address - Where in the space to read or write | |
1da177e4 | 333 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 334 | * value - Pointer to in or out value |
1da177e4 LT |
335 | * handler_context - Pointer to Handler's context |
336 | * region_context - Pointer to context specific to the | |
337 | * accessed region | |
338 | * | |
339 | * RETURN: Status | |
340 | * | |
341 | * DESCRIPTION: Handler for the PCI Config address space (Op Region) | |
342 | * | |
343 | ******************************************************************************/ | |
344 | ||
345 | acpi_status | |
4be44fcd LB |
346 | acpi_ex_pci_config_space_handler(u32 function, |
347 | acpi_physical_address address, | |
348 | u32 bit_width, | |
5df7e6cb | 349 | u64 *value, |
4be44fcd | 350 | void *handler_context, void *region_context) |
1da177e4 | 351 | { |
4be44fcd LB |
352 | acpi_status status = AE_OK; |
353 | struct acpi_pci_id *pci_id; | |
354 | u16 pci_register; | |
1da177e4 | 355 | |
b229cf92 | 356 | ACPI_FUNCTION_TRACE(ex_pci_config_space_handler); |
1da177e4 LT |
357 | |
358 | /* | |
359 | * The arguments to acpi_os(Read|Write)pci_configuration are: | |
360 | * | |
361 | * pci_segment is the PCI bus segment range 0-31 | |
362 | * pci_bus is the PCI bus number range 0-255 | |
363 | * pci_device is the PCI device number range 0-31 | |
364 | * pci_function is the PCI device function number | |
365 | * pci_register is the Config space register range 0-255 bytes | |
366 | * | |
ba494bee | 367 | * value - input value for write, output address for read |
1da177e4 LT |
368 | * |
369 | */ | |
4be44fcd | 370 | pci_id = (struct acpi_pci_id *)region_context; |
1da177e4 LT |
371 | pci_register = (u16) (u32) address; |
372 | ||
4be44fcd | 373 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
b27d6597 | 374 | "Pci-Config %u (%u) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", |
4be44fcd LB |
375 | function, bit_width, pci_id->segment, pci_id->bus, |
376 | pci_id->device, pci_id->function, pci_register)); | |
1da177e4 LT |
377 | |
378 | switch (function) { | |
379 | case ACPI_READ: | |
380 | ||
4be44fcd | 381 | status = acpi_os_read_pci_configuration(pci_id, pci_register, |
c5f0231e | 382 | value, bit_width); |
1da177e4 LT |
383 | break; |
384 | ||
385 | case ACPI_WRITE: | |
386 | ||
4be44fcd LB |
387 | status = acpi_os_write_pci_configuration(pci_id, pci_register, |
388 | *value, bit_width); | |
1da177e4 LT |
389 | break; |
390 | ||
391 | default: | |
392 | ||
393 | status = AE_BAD_PARAMETER; | |
394 | break; | |
395 | } | |
396 | ||
4be44fcd | 397 | return_ACPI_STATUS(status); |
1da177e4 LT |
398 | } |
399 | ||
1da177e4 LT |
400 | /******************************************************************************* |
401 | * | |
402 | * FUNCTION: acpi_ex_cmos_space_handler | |
403 | * | |
ba494bee BM |
404 | * PARAMETERS: function - Read or Write operation |
405 | * address - Where in the space to read or write | |
1da177e4 | 406 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 407 | * value - Pointer to in or out value |
1da177e4 LT |
408 | * handler_context - Pointer to Handler's context |
409 | * region_context - Pointer to context specific to the | |
410 | * accessed region | |
411 | * | |
412 | * RETURN: Status | |
413 | * | |
414 | * DESCRIPTION: Handler for the CMOS address space (Op Region) | |
415 | * | |
416 | ******************************************************************************/ | |
417 | ||
418 | acpi_status | |
4be44fcd LB |
419 | acpi_ex_cmos_space_handler(u32 function, |
420 | acpi_physical_address address, | |
421 | u32 bit_width, | |
5df7e6cb | 422 | u64 *value, |
4be44fcd | 423 | void *handler_context, void *region_context) |
1da177e4 | 424 | { |
4be44fcd | 425 | acpi_status status = AE_OK; |
1da177e4 | 426 | |
b229cf92 | 427 | ACPI_FUNCTION_TRACE(ex_cmos_space_handler); |
1da177e4 | 428 | |
4be44fcd | 429 | return_ACPI_STATUS(status); |
1da177e4 LT |
430 | } |
431 | ||
1da177e4 LT |
432 | /******************************************************************************* |
433 | * | |
434 | * FUNCTION: acpi_ex_pci_bar_space_handler | |
435 | * | |
ba494bee BM |
436 | * PARAMETERS: function - Read or Write operation |
437 | * address - Where in the space to read or write | |
1da177e4 | 438 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 439 | * value - Pointer to in or out value |
1da177e4 LT |
440 | * handler_context - Pointer to Handler's context |
441 | * region_context - Pointer to context specific to the | |
442 | * accessed region | |
443 | * | |
444 | * RETURN: Status | |
445 | * | |
446 | * DESCRIPTION: Handler for the PCI bar_target address space (Op Region) | |
447 | * | |
448 | ******************************************************************************/ | |
449 | ||
450 | acpi_status | |
4be44fcd LB |
451 | acpi_ex_pci_bar_space_handler(u32 function, |
452 | acpi_physical_address address, | |
453 | u32 bit_width, | |
5df7e6cb | 454 | u64 *value, |
4be44fcd | 455 | void *handler_context, void *region_context) |
1da177e4 | 456 | { |
4be44fcd | 457 | acpi_status status = AE_OK; |
1da177e4 | 458 | |
b229cf92 | 459 | ACPI_FUNCTION_TRACE(ex_pci_bar_space_handler); |
1da177e4 | 460 | |
4be44fcd | 461 | return_ACPI_STATUS(status); |
1da177e4 LT |
462 | } |
463 | ||
1da177e4 LT |
464 | /******************************************************************************* |
465 | * | |
466 | * FUNCTION: acpi_ex_data_table_space_handler | |
467 | * | |
ba494bee BM |
468 | * PARAMETERS: function - Read or Write operation |
469 | * address - Where in the space to read or write | |
1da177e4 | 470 | * bit_width - Field width in bits (8, 16, or 32) |
ba494bee | 471 | * value - Pointer to in or out value |
1da177e4 LT |
472 | * handler_context - Pointer to Handler's context |
473 | * region_context - Pointer to context specific to the | |
474 | * accessed region | |
475 | * | |
476 | * RETURN: Status | |
477 | * | |
478 | * DESCRIPTION: Handler for the Data Table address space (Op Region) | |
479 | * | |
480 | ******************************************************************************/ | |
481 | ||
482 | acpi_status | |
4be44fcd LB |
483 | acpi_ex_data_table_space_handler(u32 function, |
484 | acpi_physical_address address, | |
485 | u32 bit_width, | |
5df7e6cb | 486 | u64 *value, |
4be44fcd | 487 | void *handler_context, void *region_context) |
1da177e4 | 488 | { |
b229cf92 | 489 | ACPI_FUNCTION_TRACE(ex_data_table_space_handler); |
1da177e4 | 490 | |
c1637e9c BM |
491 | /* |
492 | * Perform the memory read or write. The bit_width was already | |
493 | * validated. | |
494 | */ | |
1da177e4 LT |
495 | switch (function) { |
496 | case ACPI_READ: | |
497 | ||
4119532c BM |
498 | ACPI_MEMCPY(ACPI_CAST_PTR(char, value), |
499 | ACPI_PHYSADDR_TO_PTR(address), | |
500 | ACPI_DIV_8(bit_width)); | |
1da177e4 LT |
501 | break; |
502 | ||
503 | case ACPI_WRITE: | |
c1637e9c BM |
504 | |
505 | ACPI_MEMCPY(ACPI_PHYSADDR_TO_PTR(address), | |
506 | ACPI_CAST_PTR(char, value), ACPI_DIV_8(bit_width)); | |
507 | break; | |
508 | ||
1da177e4 LT |
509 | default: |
510 | ||
c1637e9c | 511 | return_ACPI_STATUS(AE_BAD_PARAMETER); |
1da177e4 LT |
512 | } |
513 | ||
4119532c | 514 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 515 | } |