diff options
Diffstat (limited to 'drivers/acpi/tables/tbconvrt.c')
-rw-r--r-- | drivers/acpi/tables/tbconvrt.c | 622 |
1 files changed, 0 insertions, 622 deletions
diff --git a/drivers/acpi/tables/tbconvrt.c b/drivers/acpi/tables/tbconvrt.c deleted file mode 100644 index d697fcb35d52..000000000000 --- a/drivers/acpi/tables/tbconvrt.c +++ /dev/null | |||
@@ -1,622 +0,0 @@ | |||
1 | /****************************************************************************** | ||
2 | * | ||
3 | * Module Name: tbconvrt - ACPI Table conversion utilities | ||
4 | * | ||
5 | *****************************************************************************/ | ||
6 | |||
7 | /* | ||
8 | * Copyright (C) 2000 - 2006, R. Byron Moore | ||
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 | |||
44 | #include <acpi/acpi.h> | ||
45 | #include <acpi/actables.h> | ||
46 | |||
47 | #define _COMPONENT ACPI_TABLES | ||
48 | ACPI_MODULE_NAME("tbconvrt") | ||
49 | |||
50 | /* Local prototypes */ | ||
51 | static void | ||
52 | acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct, | ||
53 | u8 register_bit_width, | ||
54 | acpi_physical_address address); | ||
55 | |||
56 | static void | ||
57 | acpi_tb_convert_fadt1(struct fadt_descriptor *local_fadt, | ||
58 | struct fadt_descriptor_rev1 *original_fadt); | ||
59 | |||
60 | static void | ||
61 | acpi_tb_convert_fadt2(struct fadt_descriptor *local_fadt, | ||
62 | struct fadt_descriptor *original_fadt); | ||
63 | |||
64 | u8 acpi_fadt_is_v1; | ||
65 | ACPI_EXPORT_SYMBOL(acpi_fadt_is_v1) | ||
66 | |||
67 | /******************************************************************************* | ||
68 | * | ||
69 | * FUNCTION: acpi_tb_get_table_count | ||
70 | * | ||
71 | * PARAMETERS: RSDP - Pointer to the RSDP | ||
72 | * RSDT - Pointer to the RSDT/XSDT | ||
73 | * | ||
74 | * RETURN: The number of tables pointed to by the RSDT or XSDT. | ||
75 | * | ||
76 | * DESCRIPTION: Calculate the number of tables. Automatically handles either | ||
77 | * an RSDT or XSDT. | ||
78 | * | ||
79 | ******************************************************************************/ | ||
80 | |||
81 | u32 | ||
82 | acpi_tb_get_table_count(struct rsdp_descriptor *RSDP, | ||
83 | struct acpi_table_header *RSDT) | ||
84 | { | ||
85 | u32 pointer_size; | ||
86 | |||
87 | ACPI_FUNCTION_ENTRY(); | ||
88 | |||
89 | /* RSDT pointers are 32 bits, XSDT pointers are 64 bits */ | ||
90 | |||
91 | if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) { | ||
92 | pointer_size = sizeof(u32); | ||
93 | } else { | ||
94 | pointer_size = sizeof(u64); | ||
95 | } | ||
96 | |||
97 | /* | ||
98 | * Determine the number of tables pointed to by the RSDT/XSDT. | ||
99 | * This is defined by the ACPI Specification to be the number of | ||
100 | * pointers contained within the RSDT/XSDT. The size of the pointers | ||
101 | * is architecture-dependent. | ||
102 | */ | ||
103 | return ((RSDT->length - | ||
104 | sizeof(struct acpi_table_header)) / pointer_size); | ||
105 | } | ||
106 | |||
107 | /******************************************************************************* | ||
108 | * | ||
109 | * FUNCTION: acpi_tb_convert_to_xsdt | ||
110 | * | ||
111 | * PARAMETERS: table_info - Info about the RSDT | ||
112 | * | ||
113 | * RETURN: Status | ||
114 | * | ||
115 | * DESCRIPTION: Convert an RSDT to an XSDT (internal common format) | ||
116 | * | ||
117 | ******************************************************************************/ | ||
118 | |||
119 | acpi_status acpi_tb_convert_to_xsdt(struct acpi_table_desc *table_info) | ||
120 | { | ||
121 | acpi_size table_size; | ||
122 | u32 i; | ||
123 | struct xsdt_descriptor *new_table; | ||
124 | |||
125 | ACPI_FUNCTION_ENTRY(); | ||
126 | |||
127 | /* Compute size of the converted XSDT */ | ||
128 | |||
129 | table_size = ((acpi_size) acpi_gbl_rsdt_table_count * sizeof(u64)) + | ||
130 | sizeof(struct acpi_table_header); | ||
131 | |||
132 | /* Allocate an XSDT */ | ||
133 | |||
134 | new_table = ACPI_ALLOCATE_ZEROED(table_size); | ||
135 | if (!new_table) { | ||
136 | return (AE_NO_MEMORY); | ||
137 | } | ||
138 | |||
139 | /* Copy the header and set the length */ | ||
140 | |||
141 | ACPI_MEMCPY(new_table, table_info->pointer, | ||
142 | sizeof(struct acpi_table_header)); | ||
143 | new_table->length = (u32) table_size; | ||
144 | |||
145 | /* Copy the table pointers */ | ||
146 | |||
147 | for (i = 0; i < acpi_gbl_rsdt_table_count; i++) { | ||
148 | |||
149 | /* RSDT pointers are 32 bits, XSDT pointers are 64 bits */ | ||
150 | |||
151 | if (acpi_gbl_root_table_type == ACPI_TABLE_TYPE_RSDT) { | ||
152 | ACPI_STORE_ADDRESS(new_table->table_offset_entry[i], | ||
153 | (ACPI_CAST_PTR | ||
154 | (struct rsdt_descriptor, | ||
155 | table_info->pointer))-> | ||
156 | table_offset_entry[i]); | ||
157 | } else { | ||
158 | new_table->table_offset_entry[i] = | ||
159 | (ACPI_CAST_PTR(struct xsdt_descriptor, | ||
160 | table_info->pointer))-> | ||
161 | table_offset_entry[i]; | ||
162 | } | ||
163 | } | ||
164 | |||
165 | /* Delete the original table (either mapped or in a buffer) */ | ||
166 | |||
167 | acpi_tb_delete_single_table(table_info); | ||
168 | |||
169 | /* Point the table descriptor to the new table */ | ||
170 | |||
171 | table_info->pointer = | ||
172 | ACPI_CAST_PTR(struct acpi_table_header, new_table); | ||
173 | table_info->length = table_size; | ||
174 | table_info->allocation = ACPI_MEM_ALLOCATED; | ||
175 | |||
176 | return (AE_OK); | ||
177 | } | ||
178 | |||
179 | /******************************************************************************* | ||
180 | * | ||
181 | * FUNCTION: acpi_tb_init_generic_address | ||
182 | * | ||
183 | * PARAMETERS: new_gas_struct - GAS struct to be initialized | ||
184 | * register_bit_width - Width of this register | ||
185 | * Address - Address of the register | ||
186 | * | ||
187 | * RETURN: None | ||
188 | * | ||
189 | * DESCRIPTION: Initialize a GAS structure. | ||
190 | * | ||
191 | ******************************************************************************/ | ||
192 | |||
193 | static void | ||
194 | acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct, | ||
195 | u8 register_bit_width, | ||
196 | acpi_physical_address address) | ||
197 | { | ||
198 | |||
199 | ACPI_STORE_ADDRESS(new_gas_struct->address, address); | ||
200 | |||
201 | new_gas_struct->address_space_id = ACPI_ADR_SPACE_SYSTEM_IO; | ||
202 | new_gas_struct->register_bit_width = register_bit_width; | ||
203 | new_gas_struct->register_bit_offset = 0; | ||
204 | new_gas_struct->access_width = 0; | ||
205 | } | ||
206 | |||
207 | /******************************************************************************* | ||
208 | * | ||
209 | * FUNCTION: acpi_tb_convert_fadt1 | ||
210 | * | ||
211 | * PARAMETERS: local_fadt - Pointer to new FADT | ||
212 | * original_fadt - Pointer to old FADT | ||
213 | * | ||
214 | * RETURN: None, populates local_fadt | ||
215 | * | ||
216 | * DESCRIPTION: Convert an ACPI 1.0 FADT to common internal format | ||
217 | * | ||
218 | ******************************************************************************/ | ||
219 | |||
220 | static void | ||
221 | acpi_tb_convert_fadt1(struct fadt_descriptor *local_fadt, | ||
222 | struct fadt_descriptor_rev1 *original_fadt) | ||
223 | { | ||
224 | |||
225 | /* ACPI 1.0 FACS */ | ||
226 | /* The BIOS stored FADT should agree with Revision 1.0 */ | ||
227 | acpi_fadt_is_v1 = 1; | ||
228 | |||
229 | /* | ||
230 | * Copy the table header and the common part of the tables. | ||
231 | * | ||
232 | * The 2.0 table is an extension of the 1.0 table, so the entire 1.0 | ||
233 | * table can be copied first, then expand some fields to 64 bits. | ||
234 | */ | ||
235 | ACPI_MEMCPY(local_fadt, original_fadt, | ||
236 | sizeof(struct fadt_descriptor_rev1)); | ||
237 | |||
238 | /* Convert table pointers to 64-bit fields */ | ||
239 | |||
240 | ACPI_STORE_ADDRESS(local_fadt->xfirmware_ctrl, | ||
241 | local_fadt->V1_firmware_ctrl); | ||
242 | ACPI_STORE_ADDRESS(local_fadt->Xdsdt, local_fadt->V1_dsdt); | ||
243 | |||
244 | /* | ||
245 | * System Interrupt Model isn't used in ACPI 2.0 | ||
246 | * (local_fadt->Reserved1 = 0;) | ||
247 | */ | ||
248 | |||
249 | /* | ||
250 | * This field is set by the OEM to convey the preferred power management | ||
251 | * profile to OSPM. It doesn't have any 1.0 equivalence. Since we don't | ||
252 | * know what kind of 32-bit system this is, we will use "unspecified". | ||
253 | */ | ||
254 | local_fadt->prefer_PM_profile = PM_UNSPECIFIED; | ||
255 | |||
256 | /* | ||
257 | * Processor Performance State Control. This is the value OSPM writes to | ||
258 | * the SMI_CMD register to assume processor performance state control | ||
259 | * responsibility. There isn't any equivalence in 1.0, but as many 1.x | ||
260 | * ACPI tables contain _PCT and _PSS we also keep this value, unless | ||
261 | * acpi_strict is set. | ||
262 | */ | ||
263 | if (acpi_strict) | ||
264 | local_fadt->pstate_cnt = 0; | ||
265 | |||
266 | /* | ||
267 | * Support for the _CST object and C States change notification. | ||
268 | * This data item hasn't any 1.0 equivalence so leave it zero. | ||
269 | */ | ||
270 | local_fadt->cst_cnt = 0; | ||
271 | |||
272 | /* | ||
273 | * FADT Rev 2 was an interim FADT released between ACPI 1.0 and ACPI 2.0. | ||
274 | * It primarily adds the FADT reset mechanism. | ||
275 | */ | ||
276 | if ((original_fadt->revision == 2) && | ||
277 | (original_fadt->length == | ||
278 | sizeof(struct fadt_descriptor_rev2_minus))) { | ||
279 | /* | ||
280 | * Grab the entire generic address struct, plus the 1-byte reset value | ||
281 | * that immediately follows. | ||
282 | */ | ||
283 | ACPI_MEMCPY(&local_fadt->reset_register, | ||
284 | &(ACPI_CAST_PTR(struct fadt_descriptor_rev2_minus, | ||
285 | original_fadt))->reset_register, | ||
286 | sizeof(struct acpi_generic_address) + 1); | ||
287 | } else { | ||
288 | /* | ||
289 | * Since there isn't any equivalence in 1.0 and since it is highly | ||
290 | * likely that a 1.0 system has legacy support. | ||
291 | */ | ||
292 | local_fadt->iapc_boot_arch = BAF_LEGACY_DEVICES; | ||
293 | } | ||
294 | |||
295 | /* | ||
296 | * Convert the V1.0 block addresses to V2.0 GAS structures | ||
297 | */ | ||
298 | acpi_tb_init_generic_address(&local_fadt->xpm1a_evt_blk, | ||
299 | local_fadt->pm1_evt_len, | ||
300 | (acpi_physical_address) local_fadt-> | ||
301 | V1_pm1a_evt_blk); | ||
302 | acpi_tb_init_generic_address(&local_fadt->xpm1b_evt_blk, | ||
303 | local_fadt->pm1_evt_len, | ||
304 | (acpi_physical_address) local_fadt-> | ||
305 | V1_pm1b_evt_blk); | ||
306 | acpi_tb_init_generic_address(&local_fadt->xpm1a_cnt_blk, | ||
307 | local_fadt->pm1_cnt_len, | ||
308 | (acpi_physical_address) local_fadt-> | ||
309 | V1_pm1a_cnt_blk); | ||
310 | acpi_tb_init_generic_address(&local_fadt->xpm1b_cnt_blk, | ||
311 | local_fadt->pm1_cnt_len, | ||
312 | (acpi_physical_address) local_fadt-> | ||
313 | V1_pm1b_cnt_blk); | ||
314 | acpi_tb_init_generic_address(&local_fadt->xpm2_cnt_blk, | ||
315 | local_fadt->pm2_cnt_len, | ||
316 | (acpi_physical_address) local_fadt-> | ||
317 | V1_pm2_cnt_blk); | ||
318 | acpi_tb_init_generic_address(&local_fadt->xpm_tmr_blk, | ||
319 | local_fadt->pm_tm_len, | ||
320 | (acpi_physical_address) local_fadt-> | ||
321 | V1_pm_tmr_blk); | ||
322 | acpi_tb_init_generic_address(&local_fadt->xgpe0_blk, 0, | ||
323 | (acpi_physical_address) local_fadt-> | ||
324 | V1_gpe0_blk); | ||
325 | acpi_tb_init_generic_address(&local_fadt->xgpe1_blk, 0, | ||
326 | (acpi_physical_address) local_fadt-> | ||
327 | V1_gpe1_blk); | ||
328 | |||
329 | /* Create separate GAS structs for the PM1 Enable registers */ | ||
330 | |||
331 | acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable, | ||
332 | (u8) ACPI_DIV_2(acpi_gbl_FADT-> | ||
333 | pm1_evt_len), | ||
334 | (acpi_physical_address) | ||
335 | (local_fadt->xpm1a_evt_blk.address + | ||
336 | ACPI_DIV_2(acpi_gbl_FADT->pm1_evt_len))); | ||
337 | |||
338 | /* PM1B is optional; leave null if not present */ | ||
339 | |||
340 | if (local_fadt->xpm1b_evt_blk.address) { | ||
341 | acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable, | ||
342 | (u8) ACPI_DIV_2(acpi_gbl_FADT-> | ||
343 | pm1_evt_len), | ||
344 | (acpi_physical_address) | ||
345 | (local_fadt->xpm1b_evt_blk. | ||
346 | address + | ||
347 | ACPI_DIV_2(acpi_gbl_FADT-> | ||
348 | pm1_evt_len))); | ||
349 | } | ||
350 | } | ||
351 | |||
352 | /******************************************************************************* | ||
353 | * | ||
354 | * FUNCTION: acpi_tb_convert_fadt2 | ||
355 | * | ||
356 | * PARAMETERS: local_fadt - Pointer to new FADT | ||
357 | * original_fadt - Pointer to old FADT | ||
358 | * | ||
359 | * RETURN: None, populates local_fadt | ||
360 | * | ||
361 | * DESCRIPTION: Convert an ACPI 2.0 FADT to common internal format. | ||
362 | * Handles optional "X" fields. | ||
363 | * | ||
364 | ******************************************************************************/ | ||
365 | |||
366 | static void | ||
367 | acpi_tb_convert_fadt2(struct fadt_descriptor *local_fadt, | ||
368 | struct fadt_descriptor *original_fadt) | ||
369 | { | ||
370 | |||
371 | /* We have an ACPI 2.0 FADT but we must copy it to our local buffer */ | ||
372 | |||
373 | ACPI_MEMCPY(local_fadt, original_fadt, sizeof(struct fadt_descriptor)); | ||
374 | |||
375 | /* | ||
376 | * "X" fields are optional extensions to the original V1.0 fields, so | ||
377 | * we must selectively expand V1.0 fields if the corresponding X field | ||
378 | * is zero. | ||
379 | */ | ||
380 | if (!(local_fadt->xfirmware_ctrl)) { | ||
381 | ACPI_STORE_ADDRESS(local_fadt->xfirmware_ctrl, | ||
382 | local_fadt->V1_firmware_ctrl); | ||
383 | } | ||
384 | |||
385 | if (!(local_fadt->Xdsdt)) { | ||
386 | ACPI_STORE_ADDRESS(local_fadt->Xdsdt, local_fadt->V1_dsdt); | ||
387 | } | ||
388 | |||
389 | if (!(local_fadt->xpm1a_evt_blk.address)) { | ||
390 | acpi_tb_init_generic_address(&local_fadt->xpm1a_evt_blk, | ||
391 | local_fadt->pm1_evt_len, | ||
392 | (acpi_physical_address) | ||
393 | local_fadt->V1_pm1a_evt_blk); | ||
394 | } | ||
395 | |||
396 | if (!(local_fadt->xpm1b_evt_blk.address)) { | ||
397 | acpi_tb_init_generic_address(&local_fadt->xpm1b_evt_blk, | ||
398 | local_fadt->pm1_evt_len, | ||
399 | (acpi_physical_address) | ||
400 | local_fadt->V1_pm1b_evt_blk); | ||
401 | } | ||
402 | |||
403 | if (!(local_fadt->xpm1a_cnt_blk.address)) { | ||
404 | acpi_tb_init_generic_address(&local_fadt->xpm1a_cnt_blk, | ||
405 | local_fadt->pm1_cnt_len, | ||
406 | (acpi_physical_address) | ||
407 | local_fadt->V1_pm1a_cnt_blk); | ||
408 | } | ||
409 | |||
410 | if (!(local_fadt->xpm1b_cnt_blk.address)) { | ||
411 | acpi_tb_init_generic_address(&local_fadt->xpm1b_cnt_blk, | ||
412 | local_fadt->pm1_cnt_len, | ||
413 | (acpi_physical_address) | ||
414 | local_fadt->V1_pm1b_cnt_blk); | ||
415 | } | ||
416 | |||
417 | if (!(local_fadt->xpm2_cnt_blk.address)) { | ||
418 | acpi_tb_init_generic_address(&local_fadt->xpm2_cnt_blk, | ||
419 | local_fadt->pm2_cnt_len, | ||
420 | (acpi_physical_address) | ||
421 | local_fadt->V1_pm2_cnt_blk); | ||
422 | } | ||
423 | |||
424 | if (!(local_fadt->xpm_tmr_blk.address)) { | ||
425 | acpi_tb_init_generic_address(&local_fadt->xpm_tmr_blk, | ||
426 | local_fadt->pm_tm_len, | ||
427 | (acpi_physical_address) | ||
428 | local_fadt->V1_pm_tmr_blk); | ||
429 | } | ||
430 | |||
431 | if (!(local_fadt->xgpe0_blk.address)) { | ||
432 | acpi_tb_init_generic_address(&local_fadt->xgpe0_blk, | ||
433 | 0, | ||
434 | (acpi_physical_address) | ||
435 | local_fadt->V1_gpe0_blk); | ||
436 | } | ||
437 | |||
438 | if (!(local_fadt->xgpe1_blk.address)) { | ||
439 | acpi_tb_init_generic_address(&local_fadt->xgpe1_blk, | ||
440 | 0, | ||
441 | (acpi_physical_address) | ||
442 | local_fadt->V1_gpe1_blk); | ||
443 | } | ||
444 | |||
445 | /* Create separate GAS structs for the PM1 Enable registers */ | ||
446 | |||
447 | acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable, | ||
448 | (u8) ACPI_DIV_2(acpi_gbl_FADT-> | ||
449 | pm1_evt_len), | ||
450 | (acpi_physical_address) | ||
451 | (local_fadt->xpm1a_evt_blk.address + | ||
452 | ACPI_DIV_2(acpi_gbl_FADT->pm1_evt_len))); | ||
453 | |||
454 | acpi_gbl_xpm1a_enable.address_space_id = | ||
455 | local_fadt->xpm1a_evt_blk.address_space_id; | ||
456 | |||
457 | /* PM1B is optional; leave null if not present */ | ||
458 | |||
459 | if (local_fadt->xpm1b_evt_blk.address) { | ||
460 | acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable, | ||
461 | (u8) ACPI_DIV_2(acpi_gbl_FADT-> | ||
462 | pm1_evt_len), | ||
463 | (acpi_physical_address) | ||
464 | (local_fadt->xpm1b_evt_blk. | ||
465 | address + | ||
466 | ACPI_DIV_2(acpi_gbl_FADT-> | ||
467 | pm1_evt_len))); | ||
468 | |||
469 | acpi_gbl_xpm1b_enable.address_space_id = | ||
470 | local_fadt->xpm1b_evt_blk.address_space_id; | ||
471 | } | ||
472 | } | ||
473 | |||
474 | /******************************************************************************* | ||
475 | * | ||
476 | * FUNCTION: acpi_tb_convert_table_fadt | ||
477 | * | ||
478 | * PARAMETERS: None | ||
479 | * | ||
480 | * RETURN: Status | ||
481 | * | ||
482 | * DESCRIPTION: Converts a BIOS supplied ACPI 1.0 FADT to a local | ||
483 | * ACPI 2.0 FADT. If the BIOS supplied a 2.0 FADT then it is simply | ||
484 | * copied to the local FADT. The ACPI CA software uses this | ||
485 | * local FADT. Thus a significant amount of special #ifdef | ||
486 | * type codeing is saved. | ||
487 | * | ||
488 | ******************************************************************************/ | ||
489 | |||
490 | acpi_status acpi_tb_convert_table_fadt(void) | ||
491 | { | ||
492 | struct fadt_descriptor *local_fadt; | ||
493 | struct acpi_table_desc *table_desc; | ||
494 | |||
495 | ACPI_FUNCTION_TRACE(tb_convert_table_fadt); | ||
496 | |||
497 | /* | ||
498 | * acpi_gbl_FADT is valid. Validate the FADT length. The table must be | ||
499 | * at least as long as the version 1.0 FADT | ||
500 | */ | ||
501 | if (acpi_gbl_FADT->length < sizeof(struct fadt_descriptor_rev1)) { | ||
502 | ACPI_ERROR((AE_INFO, "FADT is invalid, too short: 0x%X", | ||
503 | acpi_gbl_FADT->length)); | ||
504 | return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH); | ||
505 | } | ||
506 | |||
507 | /* Allocate buffer for the ACPI 2.0(+) FADT */ | ||
508 | |||
509 | local_fadt = ACPI_ALLOCATE_ZEROED(sizeof(struct fadt_descriptor)); | ||
510 | if (!local_fadt) { | ||
511 | return_ACPI_STATUS(AE_NO_MEMORY); | ||
512 | } | ||
513 | |||
514 | if (acpi_gbl_FADT->revision >= FADT2_REVISION_ID) { | ||
515 | if (acpi_gbl_FADT->length < sizeof(struct fadt_descriptor)) { | ||
516 | |||
517 | /* Length is too short to be a V2.0 table */ | ||
518 | |||
519 | ACPI_WARNING((AE_INFO, | ||
520 | "Inconsistent FADT length (0x%X) and revision (0x%X), using FADT V1.0 portion of table", | ||
521 | acpi_gbl_FADT->length, | ||
522 | acpi_gbl_FADT->revision)); | ||
523 | |||
524 | acpi_tb_convert_fadt1(local_fadt, | ||
525 | (void *)acpi_gbl_FADT); | ||
526 | } else { | ||
527 | /* Valid V2.0 table */ | ||
528 | |||
529 | acpi_tb_convert_fadt2(local_fadt, acpi_gbl_FADT); | ||
530 | } | ||
531 | } else { | ||
532 | /* Valid V1.0 table */ | ||
533 | |||
534 | acpi_tb_convert_fadt1(local_fadt, (void *)acpi_gbl_FADT); | ||
535 | } | ||
536 | |||
537 | /* Global FADT pointer will point to the new common V2.0 FADT */ | ||
538 | |||
539 | acpi_gbl_FADT = local_fadt; | ||
540 | acpi_gbl_FADT->length = sizeof(struct fadt_descriptor); | ||
541 | |||
542 | /* Free the original table */ | ||
543 | |||
544 | table_desc = acpi_gbl_table_lists[ACPI_TABLE_ID_FADT].next; | ||
545 | acpi_tb_delete_single_table(table_desc); | ||
546 | |||
547 | /* Install the new table */ | ||
548 | |||
549 | table_desc->pointer = | ||
550 | ACPI_CAST_PTR(struct acpi_table_header, acpi_gbl_FADT); | ||
551 | table_desc->allocation = ACPI_MEM_ALLOCATED; | ||
552 | table_desc->length = sizeof(struct fadt_descriptor); | ||
553 | |||
554 | /* Dump the entire FADT */ | ||
555 | |||
556 | ACPI_DEBUG_PRINT((ACPI_DB_TABLES, | ||
557 | "Hex dump of common internal FADT, size %d (%X)\n", | ||
558 | acpi_gbl_FADT->length, acpi_gbl_FADT->length)); | ||
559 | |||
560 | ACPI_DUMP_BUFFER(ACPI_CAST_PTR(u8, acpi_gbl_FADT), | ||
561 | acpi_gbl_FADT->length); | ||
562 | |||
563 | return_ACPI_STATUS(AE_OK); | ||
564 | } | ||
565 | |||
566 | /******************************************************************************* | ||
567 | * | ||
568 | * FUNCTION: acpi_tb_build_common_facs | ||
569 | * | ||
570 | * PARAMETERS: table_info - Info for currently installed FACS | ||
571 | * | ||
572 | * RETURN: Status | ||
573 | * | ||
574 | * DESCRIPTION: Convert ACPI 1.0 and ACPI 2.0 FACS to a common internal | ||
575 | * table format. | ||
576 | * | ||
577 | ******************************************************************************/ | ||
578 | |||
579 | acpi_status acpi_tb_build_common_facs(struct acpi_table_desc *table_info) | ||
580 | { | ||
581 | |||
582 | ACPI_FUNCTION_TRACE(tb_build_common_facs); | ||
583 | |||
584 | /* Absolute minimum length is 24, but the ACPI spec says 64 */ | ||
585 | |||
586 | if (acpi_gbl_FACS->length < 24) { | ||
587 | ACPI_ERROR((AE_INFO, "Invalid FACS table length: 0x%X", | ||
588 | acpi_gbl_FACS->length)); | ||
589 | return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH); | ||
590 | } | ||
591 | |||
592 | if (acpi_gbl_FACS->length < 64) { | ||
593 | ACPI_WARNING((AE_INFO, | ||
594 | "FACS is shorter than the ACPI specification allows: 0x%X, using anyway", | ||
595 | acpi_gbl_FACS->length)); | ||
596 | } | ||
597 | |||
598 | /* Copy fields to the new FACS */ | ||
599 | |||
600 | acpi_gbl_common_fACS.global_lock = &(acpi_gbl_FACS->global_lock); | ||
601 | |||
602 | if ((acpi_gbl_RSDP->revision < 2) || | ||
603 | (acpi_gbl_FACS->length < 32) || | ||
604 | (!(acpi_gbl_FACS->xfirmware_waking_vector))) { | ||
605 | |||
606 | /* ACPI 1.0 FACS or short table or optional X_ field is zero */ | ||
607 | |||
608 | acpi_gbl_common_fACS.firmware_waking_vector = ACPI_CAST_PTR(u64, | ||
609 | & | ||
610 | (acpi_gbl_FACS-> | ||
611 | firmware_waking_vector)); | ||
612 | acpi_gbl_common_fACS.vector_width = 32; | ||
613 | } else { | ||
614 | /* ACPI 2.0 FACS with valid X_ field */ | ||
615 | |||
616 | acpi_gbl_common_fACS.firmware_waking_vector = | ||
617 | &acpi_gbl_FACS->xfirmware_waking_vector; | ||
618 | acpi_gbl_common_fACS.vector_width = 64; | ||
619 | } | ||
620 | |||
621 | return_ACPI_STATUS(AE_OK); | ||
622 | } | ||