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authorLen Brown <len.brown@intel.com>2009-01-09 00:13:17 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:30:47 -0500
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/acpica/exregion.c
parent6620e0c49f577454b772fb381543d60ae53eb885 (diff)
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/exregion.c')
-rw-r--r--drivers/acpi/acpica/exregion.c499
1 files changed, 499 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
new file mode 100644
index 000000000000..ceb269e45aba
--- /dev/null
+++ b/drivers/acpi/acpica/exregion.c
@@ -0,0 +1,499 @@
1
2/******************************************************************************
3 *
4 * Module Name: exregion - ACPI default op_region (address space) handlers
5 *
6 *****************************************************************************/
7
8/*
9 * Copyright (C) 2000 - 2008, Intel Corp.
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
45#include <acpi/acpi.h>
46#include <acpi/accommon.h>
47#include <acpi/acinterp.h>
48
49#define _COMPONENT ACPI_EXECUTER
50ACPI_MODULE_NAME("exregion")
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 ******************************************************************************/
69acpi_status
70acpi_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)
75{
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;
81#ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
82 u32 remainder;
83#endif
84
85 ACPI_FUNCTION_TRACE(ex_system_memory_space_handler);
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:
107 ACPI_ERROR((AE_INFO, "Invalid SystemMemory width %d",
108 bit_width));
109 return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
110 }
111
112#ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
113 /*
114 * Hardware does not support non-aligned data transfers, we must verify
115 * the request.
116 */
117 (void)acpi_ut_short_divide((acpi_integer) address, length, NULL,
118 &remainder);
119 if (remainder != 0) {
120 return_ACPI_STATUS(AE_AML_ALIGNMENT);
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) ||
130 (((acpi_integer) address + length) > ((acpi_integer)
131 mem_info->
132 mapped_physical_address +
133 mem_info->mapped_length))) {
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) {
139
140 /* Valid mapping, delete it */
141
142 acpi_os_unmap_memory(mem_info->mapped_logical_address,
143 mem_info->mapped_length);
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 */
150 window_size = (acpi_size)
151 ((mem_info->address + mem_info->length) - address);
152
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
159 mem_info->mapped_logical_address =
160 acpi_os_map_memory((acpi_physical_address) address, window_size);
161 if (!mem_info->mapped_logical_address) {
162 ACPI_ERROR((AE_INFO,
163 "Could not map memory at %8.8X%8.8X, size %X",
164 ACPI_FORMAT_NATIVE_UINT(address),
165 (u32) window_size));
166 mem_info->mapped_length = 0;
167 return_ACPI_STATUS(AE_NO_MEMORY);
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 +
181 ((acpi_integer) address -
182 (acpi_integer) mem_info->mapped_physical_address);
183
184 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
185 "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n",
186 bit_width, function,
187 ACPI_FORMAT_NATIVE_UINT(address)));
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 */
197 switch (function) {
198 case ACPI_READ:
199
200 *value = 0;
201 switch (bit_width) {
202 case 8:
203 *value = (acpi_integer) ACPI_GET8(logical_addr_ptr);
204 break;
205
206 case 16:
207 *value = (acpi_integer) ACPI_GET16(logical_addr_ptr);
208 break;
209
210 case 32:
211 *value = (acpi_integer) ACPI_GET32(logical_addr_ptr);
212 break;
213
214 case 64:
215 *value = (acpi_integer) ACPI_GET64(logical_addr_ptr);
216 break;
217
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:
228 ACPI_SET8(logical_addr_ptr) = (u8) * value;
229 break;
230
231 case 16:
232 ACPI_SET16(logical_addr_ptr) = (u16) * value;
233 break;
234
235 case 32:
236 ACPI_SET32(logical_addr_ptr) = (u32) * value;
237 break;
238
239 case 64:
240 ACPI_SET64(logical_addr_ptr) = (u64) * value;
241 break;
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
254 return_ACPI_STATUS(status);
255}
256
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
275acpi_status
276acpi_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)
281{
282 acpi_status status = AE_OK;
283 u32 value32;
284
285 ACPI_FUNCTION_TRACE(ex_system_io_space_handler);
286
287 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
288 "System-IO (width %d) R/W %d Address=%8.8X%8.8X\n",
289 bit_width, function,
290 ACPI_FORMAT_NATIVE_UINT(address)));
291
292 /* Decode the function parameter */
293
294 switch (function) {
295 case ACPI_READ:
296
297 status = acpi_os_read_port((acpi_io_address) address,
298 &value32, bit_width);
299 *value = value32;
300 break;
301
302 case ACPI_WRITE:
303
304 status = acpi_os_write_port((acpi_io_address) address,
305 (u32) * value, bit_width);
306 break;
307
308 default:
309 status = AE_BAD_PARAMETER;
310 break;
311 }
312
313 return_ACPI_STATUS(status);
314}
315
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
334acpi_status
335acpi_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)
340{
341 acpi_status status = AE_OK;
342 struct acpi_pci_id *pci_id;
343 u16 pci_register;
344 u32 value32;
345
346 ACPI_FUNCTION_TRACE(ex_pci_config_space_handler);
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 */
360 pci_id = (struct acpi_pci_id *)region_context;
361 pci_register = (u16) (u32) address;
362
363 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
364 "Pci-Config %d (%d) Seg(%04x) Bus(%04x) Dev(%04x) Func(%04x) Reg(%04x)\n",
365 function, bit_width, pci_id->segment, pci_id->bus,
366 pci_id->device, pci_id->function, pci_register));
367
368 switch (function) {
369 case ACPI_READ:
370
371 status = acpi_os_read_pci_configuration(pci_id, pci_register,
372 &value32, bit_width);
373 *value = value32;
374 break;
375
376 case ACPI_WRITE:
377
378 status = acpi_os_write_pci_configuration(pci_id, pci_register,
379 *value, bit_width);
380 break;
381
382 default:
383
384 status = AE_BAD_PARAMETER;
385 break;
386 }
387
388 return_ACPI_STATUS(status);
389}
390
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
409acpi_status
410acpi_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)
415{
416 acpi_status status = AE_OK;
417
418 ACPI_FUNCTION_TRACE(ex_cmos_space_handler);
419
420 return_ACPI_STATUS(status);
421}
422
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
441acpi_status
442acpi_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)
447{
448 acpi_status status = AE_OK;
449
450 ACPI_FUNCTION_TRACE(ex_pci_bar_space_handler);
451
452 return_ACPI_STATUS(status);
453}
454
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
473acpi_status
474acpi_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)
479{
480 ACPI_FUNCTION_TRACE(ex_data_table_space_handler);
481
482 /* Perform the memory read or write */
483
484 switch (function) {
485 case ACPI_READ:
486
487 ACPI_MEMCPY(ACPI_CAST_PTR(char, value),
488 ACPI_PHYSADDR_TO_PTR(address),
489 ACPI_DIV_8(bit_width));
490 break;
491
492 case ACPI_WRITE:
493 default:
494
495 return_ACPI_STATUS(AE_SUPPORT);
496 }
497
498 return_ACPI_STATUS(AE_OK);
499}