1 /******************************************************************************
3 * Module Name: tbconvrt - ACPI Table conversion utilities
6 *****************************************************************************/
9 * Copyright (C) 2000, 2001 R. Byron Moore
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
33 #define _COMPONENT ACPI_TABLES
34 MODULE_NAME ("tbconvrt")
38 * Build a GAS structure from earlier ACPI table entries (V1.0 and 0.71 extensions)
41 * 2) Length in bytes -- convert to length in bits
42 * 3) Bit offset is zero
43 * 4) Reserved field is zero
44 * 5) Expand address to 64 bits
46 #define ASL_BUILD_GAS_FROM_ENTRY(a,b,c,d) {a.address_space_id = (u8) d;\
47 a.register_bit_width = (u8) MUL_8 (b);\
48 a.register_bit_offset = 0;\
50 ACPI_STORE_ADDRESS (a.address,c);}
53 /* ACPI V1.0 entries -- address space is always I/O */
55 #define ASL_BUILD_GAS_FROM_V1_ENTRY(a,b,c) ASL_BUILD_GAS_FROM_ENTRY(a,b,c,ADDRESS_SPACE_SYSTEM_IO)
58 /*******************************************************************************
60 * FUNCTION: Acpi_tb_convert_to_xsdt
68 ******************************************************************************/
71 acpi_tb_convert_to_xsdt (
72 ACPI_TABLE_DESC *table_info,
73 u32 *number_of_tables) {
77 XSDT_DESCRIPTOR *new_table;
82 if (acpi_gbl_RSDP->revision < 2) {
83 pointer_size = sizeof (u32);
89 pointer_size = sizeof (UINT64);
93 * Determine the number of tables pointed to by the RSDT/XSDT.
94 * This is defined by the ACPI Specification to be the number of
95 * pointers contained within the RSDT/XSDT. The size of the pointers
96 * is architecture-dependent.
99 table_size = table_info->pointer->length;
100 *number_of_tables = (table_size -
101 sizeof (ACPI_TABLE_HEADER)) / pointer_size;
103 /* Compute size of the converted XSDT */
105 table_size = (*number_of_tables * sizeof (UINT64)) + sizeof (ACPI_TABLE_HEADER);
108 /* Allocate an XSDT */
110 new_table = acpi_cm_callocate (table_size);
112 return (AE_NO_MEMORY);
115 /* Copy the header and set the length */
117 MEMCPY (new_table, table_info->pointer, sizeof (ACPI_TABLE_HEADER));
118 new_table->header.length = table_size;
120 /* Copy the table pointers */
122 for (i = 0; i < *number_of_tables; i++) {
123 if (acpi_gbl_RSDP->revision < 2) {
125 new_table->table_offset_entry[i] =
126 ((RSDT_DESCRIPTOR_REV071 *) table_info->pointer)->table_offset_entry[i];
128 ACPI_STORE_ADDRESS (new_table->table_offset_entry[i],
129 ((RSDT_DESCRIPTOR_REV1 *) table_info->pointer)->table_offset_entry[i]);
133 new_table->table_offset_entry[i] =
134 ((XSDT_DESCRIPTOR *) table_info->pointer)->table_offset_entry[i];
139 /* Delete the original table (either mapped or in a buffer) */
141 acpi_tb_delete_single_table (table_info);
144 /* Point the table descriptor to the new table */
146 table_info->pointer = (ACPI_TABLE_HEADER *) new_table;
147 table_info->base_pointer = (ACPI_TABLE_HEADER *) new_table;
148 table_info->length = table_size;
149 table_info->allocation = ACPI_MEM_ALLOCATED;
155 /*******************************************************************************
157 * FUNCTION: Acpi_tb_convert_table_fadt
164 * Converts BIOS supplied 1.0 and 0.71 ACPI FADT to an intermediate
165 * ACPI 2.0 FADT. If the BIOS supplied a 2.0 FADT then it is simply
166 * copied to the intermediate FADT. The ACPI CA software uses this
167 * intermediate FADT. Thus a significant amount of special #ifdef
168 * type codeing is saved. This intermediate FADT will need to be
169 * freed at some point.
171 ******************************************************************************/
174 acpi_tb_convert_table_fadt (void)
178 FADT_DESCRIPTOR_REV071 *FADT71;
179 u8 pm1_address_space;
180 u8 pm2_address_space;
181 u8 pm_timer_address_space;
182 u8 gpe0address_space;
183 u8 gpe1_address_space;
185 FADT_DESCRIPTOR_REV1 *FADT1;
188 FADT_DESCRIPTOR_REV2 *FADT2;
189 ACPI_TABLE_DESC *table_desc;
192 /* Acpi_gbl_FADT is valid */
193 /* Allocate and zero the 2.0 buffer */
195 FADT2 = acpi_cm_callocate (sizeof (FADT_DESCRIPTOR_REV2));
197 return (AE_NO_MEMORY);
201 /* The ACPI FADT revision number is FADT2_REVISION_ID=3 */
202 /* So, if the current table revision is less than 3 it is type 1.0 or 0.71 */
204 if (acpi_gbl_FADT->header.revision >= FADT2_REVISION_ID) {
205 /* We have an ACPI 2.0 FADT but we must copy it to our local buffer */
207 *FADT2 = *((FADT_DESCRIPTOR_REV2*) acpi_gbl_FADT);
215 * For the 64-bit case only, a revision ID less than V2.0 means the
216 * tables are the 0.71 extensions
219 /* The BIOS stored FADT should agree with Revision 0.71 */
221 FADT71 = (FADT_DESCRIPTOR_REV071 *) acpi_gbl_FADT;
223 /* Copy the table header*/
225 FADT2->header = FADT71->header;
227 /* Copy the common fields */
229 FADT2->sci_int = FADT71->sci_int;
230 FADT2->acpi_enable = FADT71->acpi_enable;
231 FADT2->acpi_disable = FADT71->acpi_disable;
232 FADT2->S4_bios_req = FADT71->S4_bios_req;
233 FADT2->plvl2_lat = FADT71->plvl2_lat;
234 FADT2->plvl3_lat = FADT71->plvl3_lat;
235 FADT2->day_alrm = FADT71->day_alrm;
236 FADT2->mon_alrm = FADT71->mon_alrm;
237 FADT2->century = FADT71->century;
238 FADT2->gpe1_base = FADT71->gpe1_base;
241 * We still use the block length registers even though
242 * the GAS structure should obsolete them. This is because
243 * these registers are byte lengths versus the GAS which
244 * contains a bit width
246 FADT2->pm1_evt_len = FADT71->pm1_evt_len;
247 FADT2->pm1_cnt_len = FADT71->pm1_cnt_len;
248 FADT2->pm2_cnt_len = FADT71->pm2_cnt_len;
249 FADT2->pm_tm_len = FADT71->pm_tm_len;
250 FADT2->gpe0blk_len = FADT71->gpe0blk_len;
251 FADT2->gpe1_blk_len = FADT71->gpe1_blk_len;
252 FADT2->gpe1_base = FADT71->gpe1_base;
254 /* Copy the existing 0.71 flags to 2.0. The other bits are zero.*/
256 FADT2->wb_invd = FADT71->flush_cash;
257 FADT2->proc_c1 = FADT71->proc_c1;
258 FADT2->plvl2_up = FADT71->plvl2_up;
259 FADT2->pwr_button = FADT71->pwr_button;
260 FADT2->sleep_button = FADT71->sleep_button;
261 FADT2->fixed_rTC = FADT71->fixed_rTC;
262 FADT2->rtcs4 = FADT71->rtcs4;
263 FADT2->tmr_val_ext = FADT71->tmr_val_ext;
264 FADT2->dock_cap = FADT71->dock_cap;
267 /* We should not use these next two addresses */
268 /* Since our buffer is pre-zeroed nothing to do for */
269 /* the next three data items in the structure */
270 /* FADT2->Firmware_ctrl = 0; */
271 /* FADT2->Dsdt = 0; */
273 /* System Interrupt Model isn't used in ACPI 2.0*/
274 /* FADT2->Reserved1 = 0; */
276 /* This field is set by the OEM to convey the preferred */
277 /* power management profile to OSPM. It doesn't have any*/
278 /* 0.71 equivalence. Since we don't know what kind of */
279 /* 64-bit system this is, we will pick unspecified. */
281 FADT2->prefer_PM_profile = PM_UNSPECIFIED;
284 /* Port address of SMI command port */
285 /* We shouldn't use this port because IA64 doesn't */
286 /* have or use SMI. It has PMI. */
288 FADT2->smi_cmd = (u32)(FADT71->smi_cmd & 0xFFFFFFFF);
291 /* processor performance state control*/
292 /* The value OSPM writes to the SMI_CMD register to assume */
293 /* processor performance state control responsibility. */
294 /* There isn't any equivalence in 0.71 */
295 /* Again this should be meaningless for IA64 */
296 /* FADT2->Pstate_cnt = 0; */
298 /* The 32-bit Power management and GPE registers are */
299 /* not valid in IA-64 and we are not going to use them */
300 /* so leaving them pre-zeroed. */
302 /* Support for the _CST object and C States change notification.*/
303 /* This data item hasn't any 0.71 equivalence so leaving it zero.*/
304 /* FADT2->Cst_cnt = 0; */
306 /* number of flush strides that need to be read */
307 /* No 0.71 equivalence. Leave pre-zeroed. */
308 /* FADT2->Flush_size = 0; */
310 /* Processor's memory cache line width, in bytes */
311 /* No 0.71 equivalence. Leave pre-zeroed. */
312 /* FADT2->Flush_stride = 0; */
314 /* Processor's duty cycle index in processor's P_CNT reg*/
315 /* No 0.71 equivalence. Leave pre-zeroed. */
316 /* FADT2->Duty_offset = 0; */
318 /* Processor's duty cycle value bit width in P_CNT register.*/
319 /* No 0.71 equivalence. Leave pre-zeroed. */
320 /* FADT2->Duty_width = 0; */
323 /* Since there isn't any equivalence in 0.71 */
324 /* and since Big_sur had to support legacy */
326 FADT2->iapc_boot_arch = BAF_LEGACY_DEVICES;
328 /* Copy to ACPI 2.0 64-BIT Extended Addresses */
330 FADT2->Xfirmware_ctrl = FADT71->firmware_ctrl;
331 FADT2->Xdsdt = FADT71->dsdt;
334 /* Extract the address space IDs */
336 pm1_address_space = (u8)((FADT71->address_space & PM1_BLK_ADDRESS_SPACE) >> 1);
337 pm2_address_space = (u8)((FADT71->address_space & PM2_CNT_BLK_ADDRESS_SPACE) >> 2);
338 pm_timer_address_space = (u8)((FADT71->address_space & PM_TMR_BLK_ADDRESS_SPACE) >> 3);
339 gpe0address_space = (u8)((FADT71->address_space & GPE0_BLK_ADDRESS_SPACE) >> 4);
340 gpe1_address_space = (u8)((FADT71->address_space & GPE1_BLK_ADDRESS_SPACE) >> 5);
343 * Convert the 0.71 (non-GAS style) Block addresses to V2.0 GAS structures,
356 ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm1a_evt_blk, FADT71->pm1_evt_len, FADT71->pm1a_evt_blk, pm1_address_space);
357 ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm1b_evt_blk, FADT71->pm1_evt_len, FADT71->pm1b_evt_blk, pm1_address_space);
358 ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm1a_cnt_blk, FADT71->pm1_cnt_len, FADT71->pm1a_cnt_blk, pm1_address_space);
359 ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm1b_cnt_blk, FADT71->pm1_cnt_len, FADT71->pm1b_cnt_blk, pm1_address_space);
360 ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm2_cnt_blk, FADT71->pm2_cnt_len, FADT71->pm2_cnt_blk, pm2_address_space);
361 ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xpm_tmr_blk, FADT71->pm_tm_len, FADT71->pm_tmr_blk, pm_timer_address_space);
362 ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xgpe0blk, FADT71->gpe0blk_len, FADT71->gpe0blk, gpe0address_space);
363 ASL_BUILD_GAS_FROM_ENTRY (FADT2->Xgpe1_blk, FADT71->gpe1_blk_len, FADT71->gpe1_blk, gpe1_address_space);
370 /* The BIOS stored FADT should agree with Revision 1.0 */
372 FADT1 = (FADT_DESCRIPTOR_REV1*) acpi_gbl_FADT;
375 * Copy the table header and the common part of the tables
376 * The 2.0 table is an extension of the 1.0 table, so the
377 * entire 1.0 table can be copied first, then expand some
381 MEMCPY (FADT2, FADT1, sizeof (FADT_DESCRIPTOR_REV1));
384 /* Convert table pointers to 64-bit fields */
386 ACPI_STORE_ADDRESS (FADT2->Xfirmware_ctrl, FADT1->firmware_ctrl);
387 ACPI_STORE_ADDRESS (FADT2->Xdsdt, FADT1->dsdt);
389 /* System Interrupt Model isn't used in ACPI 2.0*/
390 /* FADT2->Reserved1 = 0; */
392 /* This field is set by the OEM to convey the preferred */
393 /* power management profile to OSPM. It doesn't have any*/
394 /* 1.0 equivalence. Since we don't know what kind of */
395 /* 32-bit system this is, we will pick unspecified. */
397 FADT2->prefer_PM_profile = PM_UNSPECIFIED;
400 /* Processor Performance State Control. This is the value */
401 /* OSPM writes to the SMI_CMD register to assume processor */
402 /* performance state control responsibility. There isn't */
403 /* any equivalence in 1.0. So leave it zeroed. */
405 FADT2->pstate_cnt = 0;
408 /* Support for the _CST object and C States change notification.*/
409 /* This data item hasn't any 1.0 equivalence so leaving it zero.*/
414 /* Since there isn't any equivalence in 1.0 and since it */
415 /* is highly likely that a 1.0 system has legacy support. */
417 FADT2->iapc_boot_arch = BAF_LEGACY_DEVICES;
421 * Convert the V1.0 Block addresses to V2.0 GAS structures
434 ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm1a_evt_blk, FADT1->pm1_evt_len, FADT1->pm1a_evt_blk);
435 ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm1b_evt_blk, FADT1->pm1_evt_len, FADT1->pm1b_evt_blk);
436 ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm1a_cnt_blk, FADT1->pm1_cnt_len, FADT1->pm1a_cnt_blk);
437 ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm1b_cnt_blk, FADT1->pm1_cnt_len, FADT1->pm1b_cnt_blk);
438 ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm2_cnt_blk, FADT1->pm2_cnt_len, FADT1->pm2_cnt_blk);
439 ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xpm_tmr_blk, FADT1->pm_tm_len, FADT1->pm_tmr_blk);
440 ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xgpe0blk, FADT1->gpe0blk_len, FADT1->gpe0blk);
441 ASL_BUILD_GAS_FROM_V1_ENTRY (FADT2->Xgpe1_blk, FADT1->gpe1_blk_len, FADT1->gpe1_blk);
447 * Global FADT pointer will point to the common V2.0 FADT
449 acpi_gbl_FADT = FADT2;
450 acpi_gbl_FADT->header.length = sizeof (FADT_DESCRIPTOR);
453 /* Free the original table */
455 table_desc = &acpi_gbl_acpi_tables[ACPI_TABLE_FADT];
456 acpi_tb_delete_single_table (table_desc);
459 /* Install the new table */
461 table_desc->pointer = (ACPI_TABLE_HEADER *) acpi_gbl_FADT;
462 table_desc->base_pointer = acpi_gbl_FADT;
463 table_desc->allocation = ACPI_MEM_ALLOCATED;
464 table_desc->length = sizeof (FADT_DESCRIPTOR_REV2);
467 /* Dump the entire FADT */
474 /*******************************************************************************
476 * FUNCTION: Acpi_tb_convert_table_facs
484 ******************************************************************************/
487 acpi_tb_build_common_facs (
488 ACPI_TABLE_DESC *table_info)
490 ACPI_COMMON_FACS *common_facs;
493 FACS_DESCRIPTOR_REV071 *FACS71;
495 FACS_DESCRIPTOR_REV1 *FACS1;
498 FACS_DESCRIPTOR_REV2 *FACS2;
501 /* Allocate a common FACS */
503 common_facs = acpi_cm_callocate (sizeof (ACPI_COMMON_FACS));
505 return (AE_NO_MEMORY);
509 /* Copy fields to the new FACS */
511 if (acpi_gbl_RSDP->revision < 2) {
515 FACS71 = (FACS_DESCRIPTOR_REV071 *) acpi_gbl_FACS;
517 common_facs->global_lock = (u32 *) &(FACS71->global_lock);
518 common_facs->firmware_waking_vector = &FACS71->firmware_waking_vector;
519 common_facs->vector_width = 64;
523 FACS1 = (FACS_DESCRIPTOR_REV1 *) acpi_gbl_FACS;
525 common_facs->global_lock = &(FACS1->global_lock);
526 common_facs->firmware_waking_vector = (UINT64 *) &FACS1->firmware_waking_vector;
527 common_facs->vector_width = 32;
535 FACS2 = (FACS_DESCRIPTOR_REV2 *) acpi_gbl_FACS;
537 common_facs->global_lock = &(FACS2->global_lock);
538 common_facs->firmware_waking_vector = &FACS2->Xfirmware_waking_vector;
539 common_facs->vector_width = 64;
543 /* Set the global FACS pointer to point to the common FACS */
546 acpi_gbl_FACS = common_facs;