Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | |
2 | /****************************************************************************** | |
3 | * | |
4 | * Module Name: exregion - ACPI default op_region (address space) handlers | |
5 | * | |
6 | *****************************************************************************/ | |
7 | ||
8 | /* | |
4a90c7e8 | 9 | * Copyright (C) 2000 - 2006, R. Byron Moore |
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 LT |
45 | #include <acpi/acpi.h> |
46 | #include <acpi/acinterp.h> | |
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 | * | |
55 | * PARAMETERS: Function - Read or Write operation | |
56 | * Address - Where in the space to read or write | |
57 | * bit_width - Field width in bits (8, 16, or 32) | |
58 | * Value - Pointer to in or out value | |
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, | |
72 | acpi_integer * value, | |
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; | |
79 | acpi_size window_size; | |
0897831b | 80 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
4be44fcd | 81 | u32 remainder; |
1da177e4 LT |
82 | #endif |
83 | ||
b229cf92 | 84 | ACPI_FUNCTION_TRACE(ex_system_memory_space_handler); |
1da177e4 LT |
85 | |
86 | /* Validate and translate the bit width */ | |
87 | ||
88 | switch (bit_width) { | |
89 | case 8: | |
90 | length = 1; | |
91 | break; | |
92 | ||
93 | case 16: | |
94 | length = 2; | |
95 | break; | |
96 | ||
97 | case 32: | |
98 | length = 4; | |
99 | break; | |
100 | ||
101 | case 64: | |
102 | length = 8; | |
103 | break; | |
104 | ||
105 | default: | |
b229cf92 | 106 | ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %d", |
b8e4d893 | 107 | bit_width)); |
4be44fcd | 108 | return_ACPI_STATUS(AE_AML_OPERAND_VALUE); |
1da177e4 LT |
109 | } |
110 | ||
0897831b | 111 | #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED |
1da177e4 LT |
112 | /* |
113 | * Hardware does not support non-aligned data transfers, we must verify | |
114 | * the request. | |
115 | */ | |
4be44fcd LB |
116 | (void)acpi_ut_short_divide((acpi_integer) address, length, NULL, |
117 | &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) || | |
4be44fcd LB |
129 | (((acpi_integer) address + length) > ((acpi_integer) |
130 | mem_info-> | |
131 | mapped_physical_address + | |
132 | mem_info->mapped_length))) { | |
1da177e4 LT |
133 | /* |
134 | * The request cannot be resolved by the current memory mapping; | |
135 | * Delete the existing mapping and create a new one. | |
136 | */ | |
137 | if (mem_info->mapped_length) { | |
52fc0b02 | 138 | |
1da177e4 LT |
139 | /* Valid mapping, delete it */ |
140 | ||
4be44fcd LB |
141 | acpi_os_unmap_memory(mem_info->mapped_logical_address, |
142 | mem_info->mapped_length); | |
1da177e4 LT |
143 | } |
144 | ||
145 | /* | |
146 | * Don't attempt to map memory beyond the end of the region, and | |
147 | * constrain the maximum mapping size to something reasonable. | |
148 | */ | |
44f6c012 | 149 | window_size = (acpi_size) |
4be44fcd | 150 | ((mem_info->address + mem_info->length) - address); |
44f6c012 | 151 | |
1da177e4 LT |
152 | if (window_size > ACPI_SYSMEM_REGION_WINDOW_SIZE) { |
153 | window_size = ACPI_SYSMEM_REGION_WINDOW_SIZE; | |
154 | } | |
155 | ||
156 | /* Create a new mapping starting at the address given */ | |
157 | ||
4be44fcd LB |
158 | status = acpi_os_map_memory(address, window_size, |
159 | (void **)&mem_info-> | |
160 | mapped_logical_address); | |
161 | if (ACPI_FAILURE(status)) { | |
b8e4d893 BM |
162 | ACPI_ERROR((AE_INFO, |
163 | "Could not map memory at %8.8X%8.8X, size %X", | |
164 | ACPI_FORMAT_UINT64(address), | |
165 | (u32) window_size)); | |
1da177e4 | 166 | mem_info->mapped_length = 0; |
4be44fcd | 167 | return_ACPI_STATUS(status); |
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 BM |
185 | "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n", |
186 | bit_width, function, ACPI_FORMAT_UINT64(address))); | |
4be44fcd LB |
187 | |
188 | /* | |
189 | * Perform the memory read or write | |
190 | * | |
191 | * Note: For machines that do not support non-aligned transfers, the target | |
192 | * address was checked for alignment above. We do not attempt to break the | |
193 | * transfer up into smaller (byte-size) chunks because the AML specifically | |
194 | * asked for a transfer width that the hardware may require. | |
195 | */ | |
1da177e4 LT |
196 | switch (function) { |
197 | case ACPI_READ: | |
198 | ||
199 | *value = 0; | |
200 | switch (bit_width) { | |
201 | case 8: | |
c51a4de8 | 202 | *value = (acpi_integer) ACPI_GET8(logical_addr_ptr); |
1da177e4 LT |
203 | break; |
204 | ||
205 | case 16: | |
c51a4de8 | 206 | *value = (acpi_integer) ACPI_GET16(logical_addr_ptr); |
1da177e4 LT |
207 | break; |
208 | ||
209 | case 32: | |
c51a4de8 | 210 | *value = (acpi_integer) ACPI_GET32(logical_addr_ptr); |
1da177e4 LT |
211 | break; |
212 | ||
213 | #if ACPI_MACHINE_WIDTH != 16 | |
214 | case 64: | |
c51a4de8 | 215 | *value = (acpi_integer) ACPI_GET64(logical_addr_ptr); |
1da177e4 LT |
216 | break; |
217 | #endif | |
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 | ||
239 | #if ACPI_MACHINE_WIDTH != 16 | |
240 | case 64: | |
c51a4de8 | 241 | ACPI_SET64(logical_addr_ptr) = (u64) * value; |
1da177e4 LT |
242 | break; |
243 | #endif | |
244 | ||
245 | default: | |
246 | /* bit_width was already validated */ | |
247 | break; | |
248 | } | |
249 | break; | |
250 | ||
251 | default: | |
252 | status = AE_BAD_PARAMETER; | |
253 | break; | |
254 | } | |
255 | ||
4be44fcd | 256 | return_ACPI_STATUS(status); |
1da177e4 LT |
257 | } |
258 | ||
1da177e4 LT |
259 | /******************************************************************************* |
260 | * | |
261 | * FUNCTION: acpi_ex_system_io_space_handler | |
262 | * | |
263 | * PARAMETERS: Function - Read or Write operation | |
264 | * Address - Where in the space to read or write | |
265 | * bit_width - Field width in bits (8, 16, or 32) | |
266 | * Value - Pointer to in or out value | |
267 | * handler_context - Pointer to Handler's context | |
268 | * region_context - Pointer to context specific to the | |
269 | * accessed region | |
270 | * | |
271 | * RETURN: Status | |
272 | * | |
273 | * DESCRIPTION: Handler for the System IO address space (Op Region) | |
274 | * | |
275 | ******************************************************************************/ | |
276 | ||
277 | acpi_status | |
4be44fcd LB |
278 | acpi_ex_system_io_space_handler(u32 function, |
279 | acpi_physical_address address, | |
280 | u32 bit_width, | |
281 | acpi_integer * value, | |
282 | void *handler_context, void *region_context) | |
1da177e4 | 283 | { |
4be44fcd LB |
284 | acpi_status status = AE_OK; |
285 | u32 value32; | |
1da177e4 | 286 | |
b229cf92 | 287 | ACPI_FUNCTION_TRACE(ex_system_io_space_handler); |
1da177e4 | 288 | |
4be44fcd | 289 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
8313524a BM |
290 | "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n", |
291 | bit_width, function, ACPI_FORMAT_UINT64(address))); | |
1da177e4 LT |
292 | |
293 | /* Decode the function parameter */ | |
294 | ||
295 | switch (function) { | |
296 | case ACPI_READ: | |
297 | ||
4be44fcd LB |
298 | status = acpi_os_read_port((acpi_io_address) address, |
299 | &value32, bit_width); | |
1da177e4 LT |
300 | *value = value32; |
301 | break; | |
302 | ||
303 | case ACPI_WRITE: | |
304 | ||
4be44fcd LB |
305 | status = acpi_os_write_port((acpi_io_address) address, |
306 | (u32) * value, bit_width); | |
1da177e4 LT |
307 | break; |
308 | ||
309 | default: | |
310 | status = AE_BAD_PARAMETER; | |
311 | break; | |
312 | } | |
313 | ||
4be44fcd | 314 | return_ACPI_STATUS(status); |
1da177e4 LT |
315 | } |
316 | ||
1da177e4 LT |
317 | /******************************************************************************* |
318 | * | |
319 | * FUNCTION: acpi_ex_pci_config_space_handler | |
320 | * | |
321 | * PARAMETERS: Function - Read or Write operation | |
322 | * Address - Where in the space to read or write | |
323 | * bit_width - Field width in bits (8, 16, or 32) | |
324 | * Value - Pointer to in or out value | |
325 | * handler_context - Pointer to Handler's context | |
326 | * region_context - Pointer to context specific to the | |
327 | * accessed region | |
328 | * | |
329 | * RETURN: Status | |
330 | * | |
331 | * DESCRIPTION: Handler for the PCI Config address space (Op Region) | |
332 | * | |
333 | ******************************************************************************/ | |
334 | ||
335 | acpi_status | |
4be44fcd LB |
336 | acpi_ex_pci_config_space_handler(u32 function, |
337 | acpi_physical_address address, | |
338 | u32 bit_width, | |
339 | acpi_integer * value, | |
340 | void *handler_context, void *region_context) | |
1da177e4 | 341 | { |
4be44fcd LB |
342 | acpi_status status = AE_OK; |
343 | struct acpi_pci_id *pci_id; | |
344 | u16 pci_register; | |
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 | ||
371 | *value = 0; | |
4be44fcd LB |
372 | status = acpi_os_read_pci_configuration(pci_id, pci_register, |
373 | value, bit_width); | |
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 | { |
4be44fcd LB |
480 | acpi_status status = AE_OK; |
481 | u32 byte_width = ACPI_DIV_8(bit_width); | |
482 | u32 i; | |
483 | char *logical_addr_ptr; | |
1da177e4 | 484 | |
b229cf92 | 485 | ACPI_FUNCTION_TRACE(ex_data_table_space_handler); |
1da177e4 | 486 | |
4be44fcd | 487 | logical_addr_ptr = ACPI_PHYSADDR_TO_PTR(address); |
1da177e4 | 488 | |
44f6c012 | 489 | /* Perform the memory read or write */ |
1da177e4 LT |
490 | |
491 | switch (function) { | |
492 | case ACPI_READ: | |
493 | ||
494 | for (i = 0; i < byte_width; i++) { | |
4be44fcd | 495 | ((char *)value)[i] = logical_addr_ptr[i]; |
1da177e4 LT |
496 | } |
497 | break; | |
498 | ||
499 | case ACPI_WRITE: | |
500 | default: | |
501 | ||
4be44fcd | 502 | return_ACPI_STATUS(AE_SUPPORT); |
1da177e4 LT |
503 | } |
504 | ||
4be44fcd | 505 | return_ACPI_STATUS(status); |
1da177e4 | 506 | } |