Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | |
2 | /****************************************************************************** | |
3 | * | |
4 | * Module Name: exregion - ACPI default op_region (address space) handlers | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
75a44ce0 | 9 | * Copyright (C) 2000 - 2008, 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> |
50df4d8b | 46 | #include <acpi/accommon.h> |
1da177e4 LT |
47 | #include <acpi/acinterp.h> |
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; | |
80 | acpi_size window_size; | |
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: | |
b229cf92 | 107 | ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %d", |
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 | */ | |
4be44fcd LB |
117 | (void)acpi_ut_short_divide((acpi_integer) address, length, NULL, |
118 | &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) || | |
4be44fcd LB |
130 | (((acpi_integer) address + length) > ((acpi_integer) |
131 | mem_info-> | |
132 | mapped_physical_address + | |
133 | mem_info->mapped_length))) { | |
1da177e4 LT |
134 | /* |
135 | * The request cannot be resolved by the current memory mapping; | |
136 | * Delete the existing mapping and create a new one. | |
137 | */ | |
138 | if (mem_info->mapped_length) { | |
52fc0b02 | 139 | |
1da177e4 LT |
140 | /* Valid mapping, delete it */ |
141 | ||
4be44fcd LB |
142 | acpi_os_unmap_memory(mem_info->mapped_logical_address, |
143 | mem_info->mapped_length); | |
1da177e4 LT |
144 | } |
145 | ||
146 | /* | |
147 | * Don't attempt to map memory beyond the end of the region, and | |
148 | * constrain the maximum mapping size to something reasonable. | |
149 | */ | |
44f6c012 | 150 | window_size = (acpi_size) |
4be44fcd | 151 | ((mem_info->address + mem_info->length) - address); |
44f6c012 | 152 | |
1da177e4 LT |
153 | if (window_size > ACPI_SYSMEM_REGION_WINDOW_SIZE) { |
154 | window_size = ACPI_SYSMEM_REGION_WINDOW_SIZE; | |
155 | } | |
156 | ||
157 | /* Create a new mapping starting at the address given */ | |
158 | ||
f3d2e786 | 159 | mem_info->mapped_logical_address = |
67a119f9 | 160 | acpi_os_map_memory((acpi_physical_address) address, window_size); |
f3d2e786 | 161 | if (!mem_info->mapped_logical_address) { |
b8e4d893 BM |
162 | ACPI_ERROR((AE_INFO, |
163 | "Could not map memory at %8.8X%8.8X, size %X", | |
b7f9f042 | 164 | ACPI_FORMAT_NATIVE_UINT(address), |
b8e4d893 | 165 | (u32) window_size)); |
1da177e4 | 166 | mem_info->mapped_length = 0; |
f3d2e786 | 167 | return_ACPI_STATUS(AE_NO_MEMORY); |
1da177e4 LT |
168 | } |
169 | ||
170 | /* Save the physical address and mapping size */ | |
171 | ||
172 | mem_info->mapped_physical_address = address; | |
173 | mem_info->mapped_length = window_size; | |
174 | } | |
175 | ||
176 | /* | |
177 | * Generate a logical pointer corresponding to the address we want to | |
178 | * access | |
179 | */ | |
180 | logical_addr_ptr = mem_info->mapped_logical_address + | |
4be44fcd LB |
181 | ((acpi_integer) address - |
182 | (acpi_integer) mem_info->mapped_physical_address); | |
183 | ||
184 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, | |
8313524a | 185 | "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n", |
b7f9f042 BM |
186 | bit_width, function, |
187 | ACPI_FORMAT_NATIVE_UINT(address))); | |
4be44fcd LB |
188 | |
189 | /* | |
190 | * Perform the memory read or write | |
191 | * | |
192 | * Note: For machines that do not support non-aligned transfers, the target | |
193 | * address was checked for alignment above. We do not attempt to break the | |
194 | * transfer up into smaller (byte-size) chunks because the AML specifically | |
195 | * asked for a transfer width that the hardware may require. | |
196 | */ | |
1da177e4 LT |
197 | switch (function) { |
198 | case ACPI_READ: | |
199 | ||
200 | *value = 0; | |
201 | switch (bit_width) { | |
202 | case 8: | |
c51a4de8 | 203 | *value = (acpi_integer) ACPI_GET8(logical_addr_ptr); |
1da177e4 LT |
204 | break; |
205 | ||
206 | case 16: | |
c51a4de8 | 207 | *value = (acpi_integer) ACPI_GET16(logical_addr_ptr); |
1da177e4 LT |
208 | break; |
209 | ||
210 | case 32: | |
c51a4de8 | 211 | *value = (acpi_integer) ACPI_GET32(logical_addr_ptr); |
1da177e4 LT |
212 | break; |
213 | ||
1da177e4 | 214 | case 64: |
c51a4de8 | 215 | *value = (acpi_integer) ACPI_GET64(logical_addr_ptr); |
1da177e4 | 216 | break; |
59fa8505 | 217 | |
1da177e4 LT |
218 | default: |
219 | /* bit_width was already validated */ | |
220 | break; | |
221 | } | |
222 | break; | |
223 | ||
224 | case ACPI_WRITE: | |
225 | ||
226 | switch (bit_width) { | |
227 | case 8: | |
c51a4de8 | 228 | ACPI_SET8(logical_addr_ptr) = (u8) * value; |
1da177e4 LT |
229 | break; |
230 | ||
231 | case 16: | |
c51a4de8 | 232 | ACPI_SET16(logical_addr_ptr) = (u16) * value; |
1da177e4 LT |
233 | break; |
234 | ||
235 | case 32: | |
c51a4de8 | 236 | ACPI_SET32(logical_addr_ptr) = (u32) * value; |
1da177e4 LT |
237 | break; |
238 | ||
1da177e4 | 239 | case 64: |
c51a4de8 | 240 | ACPI_SET64(logical_addr_ptr) = (u64) * value; |
1da177e4 | 241 | break; |
1da177e4 LT |
242 | |
243 | default: | |
244 | /* bit_width was already validated */ | |
245 | break; | |
246 | } | |
247 | break; | |
248 | ||
249 | default: | |
250 | status = AE_BAD_PARAMETER; | |
251 | break; | |
252 | } | |
253 | ||
4be44fcd | 254 | return_ACPI_STATUS(status); |
1da177e4 LT |
255 | } |
256 | ||
1da177e4 LT |
257 | /******************************************************************************* |
258 | * | |
259 | * FUNCTION: acpi_ex_system_io_space_handler | |
260 | * | |
261 | * PARAMETERS: Function - Read or Write operation | |
262 | * Address - Where in the space to read or write | |
263 | * bit_width - Field width in bits (8, 16, or 32) | |
264 | * Value - Pointer to in or out value | |
265 | * handler_context - Pointer to Handler's context | |
266 | * region_context - Pointer to context specific to the | |
267 | * accessed region | |
268 | * | |
269 | * RETURN: Status | |
270 | * | |
271 | * DESCRIPTION: Handler for the System IO address space (Op Region) | |
272 | * | |
273 | ******************************************************************************/ | |
274 | ||
275 | acpi_status | |
4be44fcd LB |
276 | acpi_ex_system_io_space_handler(u32 function, |
277 | acpi_physical_address address, | |
278 | u32 bit_width, | |
279 | acpi_integer * value, | |
280 | void *handler_context, void *region_context) | |
1da177e4 | 281 | { |
4be44fcd LB |
282 | acpi_status status = AE_OK; |
283 | u32 value32; | |
1da177e4 | 284 | |
b229cf92 | 285 | ACPI_FUNCTION_TRACE(ex_system_io_space_handler); |
1da177e4 | 286 | |
4be44fcd | 287 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
8313524a | 288 | "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n", |
b7f9f042 BM |
289 | bit_width, function, |
290 | ACPI_FORMAT_NATIVE_UINT(address))); | |
1da177e4 LT |
291 | |
292 | /* Decode the function parameter */ | |
293 | ||
294 | switch (function) { | |
295 | case ACPI_READ: | |
296 | ||
4be44fcd LB |
297 | status = acpi_os_read_port((acpi_io_address) address, |
298 | &value32, bit_width); | |
1da177e4 LT |
299 | *value = value32; |
300 | break; | |
301 | ||
302 | case ACPI_WRITE: | |
303 | ||
4be44fcd LB |
304 | status = acpi_os_write_port((acpi_io_address) address, |
305 | (u32) * value, bit_width); | |
1da177e4 LT |
306 | break; |
307 | ||
308 | default: | |
309 | status = AE_BAD_PARAMETER; | |
310 | break; | |
311 | } | |
312 | ||
4be44fcd | 313 | return_ACPI_STATUS(status); |
1da177e4 LT |
314 | } |
315 | ||
1da177e4 LT |
316 | /******************************************************************************* |
317 | * | |
318 | * FUNCTION: acpi_ex_pci_config_space_handler | |
319 | * | |
320 | * PARAMETERS: Function - Read or Write operation | |
321 | * Address - Where in the space to read or write | |
322 | * bit_width - Field width in bits (8, 16, or 32) | |
323 | * Value - Pointer to in or out value | |
324 | * handler_context - Pointer to Handler's context | |
325 | * region_context - Pointer to context specific to the | |
326 | * accessed region | |
327 | * | |
328 | * RETURN: Status | |
329 | * | |
330 | * DESCRIPTION: Handler for the PCI Config address space (Op Region) | |
331 | * | |
332 | ******************************************************************************/ | |
333 | ||
334 | acpi_status | |
4be44fcd LB |
335 | acpi_ex_pci_config_space_handler(u32 function, |
336 | acpi_physical_address address, | |
337 | u32 bit_width, | |
338 | acpi_integer * value, | |
339 | void *handler_context, void *region_context) | |
1da177e4 | 340 | { |
4be44fcd LB |
341 | acpi_status status = AE_OK; |
342 | struct acpi_pci_id *pci_id; | |
343 | u16 pci_register; | |
1186974f | 344 | u32 value32; |
1da177e4 | 345 | |
b229cf92 | 346 | ACPI_FUNCTION_TRACE(ex_pci_config_space_handler); |
1da177e4 LT |
347 | |
348 | /* | |
349 | * The arguments to acpi_os(Read|Write)pci_configuration are: | |
350 | * | |
351 | * pci_segment is the PCI bus segment range 0-31 | |
352 | * pci_bus is the PCI bus number range 0-255 | |
353 | * pci_device is the PCI device number range 0-31 | |
354 | * pci_function is the PCI device function number | |
355 | * pci_register is the Config space register range 0-255 bytes | |
356 | * | |
357 | * Value - input value for write, output address for read | |
358 | * | |
359 | */ | |
4be44fcd | 360 | pci_id = (struct acpi_pci_id *)region_context; |
1da177e4 LT |
361 | pci_register = (u16) (u32) address; |
362 | ||
4be44fcd | 363 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
8313524a | 364 | "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n", |
4be44fcd LB |
365 | function, bit_width, pci_id->segment, pci_id->bus, |
366 | pci_id->device, pci_id->function, pci_register)); | |
1da177e4 LT |
367 | |
368 | switch (function) { | |
369 | case ACPI_READ: | |
370 | ||
4be44fcd | 371 | status = acpi_os_read_pci_configuration(pci_id, pci_register, |
1186974f ML |
372 | &value32, bit_width); |
373 | *value = value32; | |
1da177e4 LT |
374 | break; |
375 | ||
376 | case ACPI_WRITE: | |
377 | ||
4be44fcd LB |
378 | status = acpi_os_write_pci_configuration(pci_id, pci_register, |
379 | *value, bit_width); | |
1da177e4 LT |
380 | break; |
381 | ||
382 | default: | |
383 | ||
384 | status = AE_BAD_PARAMETER; | |
385 | break; | |
386 | } | |
387 | ||
4be44fcd | 388 | return_ACPI_STATUS(status); |
1da177e4 LT |
389 | } |
390 | ||
1da177e4 LT |
391 | /******************************************************************************* |
392 | * | |
393 | * FUNCTION: acpi_ex_cmos_space_handler | |
394 | * | |
395 | * PARAMETERS: Function - Read or Write operation | |
396 | * Address - Where in the space to read or write | |
397 | * bit_width - Field width in bits (8, 16, or 32) | |
398 | * Value - Pointer to in or out value | |
399 | * handler_context - Pointer to Handler's context | |
400 | * region_context - Pointer to context specific to the | |
401 | * accessed region | |
402 | * | |
403 | * RETURN: Status | |
404 | * | |
405 | * DESCRIPTION: Handler for the CMOS address space (Op Region) | |
406 | * | |
407 | ******************************************************************************/ | |
408 | ||
409 | acpi_status | |
4be44fcd LB |
410 | acpi_ex_cmos_space_handler(u32 function, |
411 | acpi_physical_address address, | |
412 | u32 bit_width, | |
413 | acpi_integer * value, | |
414 | void *handler_context, void *region_context) | |
1da177e4 | 415 | { |
4be44fcd | 416 | acpi_status status = AE_OK; |
1da177e4 | 417 | |
b229cf92 | 418 | ACPI_FUNCTION_TRACE(ex_cmos_space_handler); |
1da177e4 | 419 | |
4be44fcd | 420 | return_ACPI_STATUS(status); |
1da177e4 LT |
421 | } |
422 | ||
1da177e4 LT |
423 | /******************************************************************************* |
424 | * | |
425 | * FUNCTION: acpi_ex_pci_bar_space_handler | |
426 | * | |
427 | * PARAMETERS: Function - Read or Write operation | |
428 | * Address - Where in the space to read or write | |
429 | * bit_width - Field width in bits (8, 16, or 32) | |
430 | * Value - Pointer to in or out value | |
431 | * handler_context - Pointer to Handler's context | |
432 | * region_context - Pointer to context specific to the | |
433 | * accessed region | |
434 | * | |
435 | * RETURN: Status | |
436 | * | |
437 | * DESCRIPTION: Handler for the PCI bar_target address space (Op Region) | |
438 | * | |
439 | ******************************************************************************/ | |
440 | ||
441 | acpi_status | |
4be44fcd LB |
442 | acpi_ex_pci_bar_space_handler(u32 function, |
443 | acpi_physical_address address, | |
444 | u32 bit_width, | |
445 | acpi_integer * value, | |
446 | void *handler_context, void *region_context) | |
1da177e4 | 447 | { |
4be44fcd | 448 | acpi_status status = AE_OK; |
1da177e4 | 449 | |
b229cf92 | 450 | ACPI_FUNCTION_TRACE(ex_pci_bar_space_handler); |
1da177e4 | 451 | |
4be44fcd | 452 | return_ACPI_STATUS(status); |
1da177e4 LT |
453 | } |
454 | ||
1da177e4 LT |
455 | /******************************************************************************* |
456 | * | |
457 | * FUNCTION: acpi_ex_data_table_space_handler | |
458 | * | |
459 | * PARAMETERS: Function - Read or Write operation | |
460 | * Address - Where in the space to read or write | |
461 | * bit_width - Field width in bits (8, 16, or 32) | |
462 | * Value - Pointer to in or out value | |
463 | * handler_context - Pointer to Handler's context | |
464 | * region_context - Pointer to context specific to the | |
465 | * accessed region | |
466 | * | |
467 | * RETURN: Status | |
468 | * | |
469 | * DESCRIPTION: Handler for the Data Table address space (Op Region) | |
470 | * | |
471 | ******************************************************************************/ | |
472 | ||
473 | acpi_status | |
4be44fcd LB |
474 | acpi_ex_data_table_space_handler(u32 function, |
475 | acpi_physical_address address, | |
476 | u32 bit_width, | |
477 | acpi_integer * value, | |
478 | void *handler_context, void *region_context) | |
1da177e4 | 479 | { |
b229cf92 | 480 | ACPI_FUNCTION_TRACE(ex_data_table_space_handler); |
1da177e4 | 481 | |
44f6c012 | 482 | /* Perform the memory read or write */ |
1da177e4 LT |
483 | |
484 | switch (function) { | |
485 | case ACPI_READ: | |
486 | ||
4119532c BM |
487 | ACPI_MEMCPY(ACPI_CAST_PTR(char, value), |
488 | ACPI_PHYSADDR_TO_PTR(address), | |
489 | ACPI_DIV_8(bit_width)); | |
1da177e4 LT |
490 | break; |
491 | ||
492 | case ACPI_WRITE: | |
493 | default: | |
494 | ||
4be44fcd | 495 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
496 | } |
497 | ||
4119532c | 498 | return_ACPI_STATUS(AE_OK); |
1da177e4 | 499 | } |