1 /******************************************************************************
3 * Module Name: tbgetall - Get all required ACPI tables
5 *****************************************************************************/
8 * Copyright (C) 2000 - 2005, R. Byron Moore
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
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
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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.
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.
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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45 #include <acpi/acpi.h>
46 #include <acpi/actables.h>
49 #define _COMPONENT ACPI_TABLES
50 ACPI_MODULE_NAME ("tbgetall")
52 /* Local prototypes */
55 acpi_tb_get_primary_table (
56 struct acpi_pointer *address,
57 struct acpi_table_desc *table_info);
60 acpi_tb_get_secondary_table (
61 struct acpi_pointer *address,
62 acpi_string signature,
63 struct acpi_table_desc *table_info);
66 /*******************************************************************************
68 * FUNCTION: acpi_tb_get_primary_table
70 * PARAMETERS: Address - Physical address of table to retrieve
71 * *table_info - Where the table info is returned
75 * DESCRIPTION: Maps the physical address of table into a logical address
77 ******************************************************************************/
80 acpi_tb_get_primary_table (
81 struct acpi_pointer *address,
82 struct acpi_table_desc *table_info)
85 struct acpi_table_header header;
88 ACPI_FUNCTION_TRACE ("tb_get_primary_table");
91 /* Ignore a NULL address in the RSDT */
93 if (!address->pointer.value) {
94 return_ACPI_STATUS (AE_OK);
97 /* Get the header in order to get signature and table size */
99 status = acpi_tb_get_table_header (address, &header);
100 if (ACPI_FAILURE (status)) {
101 return_ACPI_STATUS (status);
104 /* Clear the table_info */
106 ACPI_MEMSET (table_info, 0, sizeof (struct acpi_table_desc));
109 * Check the table signature and make sure it is recognized.
110 * Also checks the header checksum
112 table_info->pointer = &header;
113 status = acpi_tb_recognize_table (table_info, ACPI_TABLE_PRIMARY);
114 if (ACPI_FAILURE (status)) {
115 return_ACPI_STATUS (status);
118 /* Get the entire table */
120 status = acpi_tb_get_table_body (address, &header, table_info);
121 if (ACPI_FAILURE (status)) {
122 return_ACPI_STATUS (status);
125 /* Install the table */
127 status = acpi_tb_install_table (table_info);
128 return_ACPI_STATUS (status);
132 /*******************************************************************************
134 * FUNCTION: acpi_tb_get_secondary_table
136 * PARAMETERS: Address - Physical address of table to retrieve
137 * *table_info - Where the table info is returned
141 * DESCRIPTION: Maps the physical address of table into a logical address
143 ******************************************************************************/
146 acpi_tb_get_secondary_table (
147 struct acpi_pointer *address,
148 acpi_string signature,
149 struct acpi_table_desc *table_info)
152 struct acpi_table_header header;
155 ACPI_FUNCTION_TRACE_STR ("tb_get_secondary_table", signature);
158 /* Get the header in order to match the signature */
160 status = acpi_tb_get_table_header (address, &header);
161 if (ACPI_FAILURE (status)) {
162 return_ACPI_STATUS (status);
165 /* Signature must match request */
167 if (ACPI_STRNCMP (header.signature, signature, ACPI_NAME_SIZE)) {
169 "Incorrect table signature - wanted [%s] found [%4.4s]\n",
170 signature, header.signature));
171 return_ACPI_STATUS (AE_BAD_SIGNATURE);
175 * Check the table signature and make sure it is recognized.
176 * Also checks the header checksum
178 table_info->pointer = &header;
179 status = acpi_tb_recognize_table (table_info, ACPI_TABLE_SECONDARY);
180 if (ACPI_FAILURE (status)) {
181 return_ACPI_STATUS (status);
184 /* Get the entire table */
186 status = acpi_tb_get_table_body (address, &header, table_info);
187 if (ACPI_FAILURE (status)) {
188 return_ACPI_STATUS (status);
191 /* Install the table */
193 status = acpi_tb_install_table (table_info);
194 return_ACPI_STATUS (status);
198 /*******************************************************************************
200 * FUNCTION: acpi_tb_get_required_tables
206 * DESCRIPTION: Load and validate tables other than the RSDT. The RSDT must
207 * already be loaded and validated.
209 * Get the minimum set of ACPI tables, namely:
211 * 1) FADT (via RSDT in loop below)
215 ******************************************************************************/
218 acpi_tb_get_required_tables (
221 acpi_status status = AE_OK;
223 struct acpi_table_desc table_info;
224 struct acpi_pointer address;
227 ACPI_FUNCTION_TRACE ("tb_get_required_tables");
229 ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%d ACPI tables in RSDT\n",
230 acpi_gbl_rsdt_table_count));
233 address.pointer_type = acpi_gbl_table_flags | ACPI_LOGICAL_ADDRESSING;
236 * Loop through all table pointers found in RSDT.
237 * This will NOT include the FACS and DSDT - we must get
238 * them after the loop.
240 * The only tables we are interested in getting here is the FADT and
243 for (i = 0; i < acpi_gbl_rsdt_table_count; i++) {
244 /* Get the table address from the common internal XSDT */
246 address.pointer.value =
247 acpi_gbl_XSDT->table_offset_entry[i];
250 * Get the tables needed by this subsystem (FADT and any SSDTs).
251 * NOTE: All other tables are completely ignored at this time.
253 status = acpi_tb_get_primary_table (&address, &table_info);
254 if ((status != AE_OK) && (status != AE_TABLE_NOT_SUPPORTED)) {
255 ACPI_REPORT_WARNING (("%s, while getting table at %8.8X%8.8X\n",
256 acpi_format_exception (status),
257 ACPI_FORMAT_UINT64 (address.pointer.value)));
261 /* We must have a FADT to continue */
263 if (!acpi_gbl_FADT) {
264 ACPI_REPORT_ERROR (("No FADT present in RSDT/XSDT\n"));
265 return_ACPI_STATUS (AE_NO_ACPI_TABLES);
269 * Convert the FADT to a common format. This allows earlier revisions of
270 * the table to coexist with newer versions, using common access code.
272 status = acpi_tb_convert_table_fadt ();
273 if (ACPI_FAILURE (status)) {
275 "Could not convert FADT to internal common format\n"));
276 return_ACPI_STATUS (status);
279 /* Get the FACS (Pointed to by the FADT) */
281 address.pointer.value = acpi_gbl_FADT->xfirmware_ctrl;
283 status = acpi_tb_get_secondary_table (&address, FACS_SIG, &table_info);
284 if (ACPI_FAILURE (status)) {
285 ACPI_REPORT_ERROR (("Could not get/install the FACS, %s\n",
286 acpi_format_exception (status)));
287 return_ACPI_STATUS (status);
291 * Create the common FACS pointer table
292 * (Contains pointers to the original table)
294 status = acpi_tb_build_common_facs (&table_info);
295 if (ACPI_FAILURE (status)) {
296 return_ACPI_STATUS (status);
299 /* Get/install the DSDT (Pointed to by the FADT) */
301 address.pointer.value = acpi_gbl_FADT->Xdsdt;
303 status = acpi_tb_get_secondary_table (&address, DSDT_SIG, &table_info);
304 if (ACPI_FAILURE (status)) {
305 ACPI_REPORT_ERROR (("Could not get/install the DSDT\n"));
306 return_ACPI_STATUS (status);
309 /* Set Integer Width (32/64) based upon DSDT revision */
311 acpi_ut_set_integer_width (acpi_gbl_DSDT->revision);
313 /* Dump the entire DSDT */
315 ACPI_DEBUG_PRINT ((ACPI_DB_TABLES,
316 "Hex dump of entire DSDT, size %d (0x%X), Integer width = %d\n",
317 acpi_gbl_DSDT->length, acpi_gbl_DSDT->length, acpi_gbl_integer_bit_width));
318 ACPI_DUMP_BUFFER ((u8 *) acpi_gbl_DSDT, acpi_gbl_DSDT->length);
320 /* Always delete the RSDP mapping, we are done with it */
322 acpi_tb_delete_tables_by_type (ACPI_TABLE_RSDP);
323 return_ACPI_STATUS (status);