diff options
Diffstat (limited to 'drivers/acpi/tables/tbutils.c')
| -rw-r--r-- | drivers/acpi/tables/tbutils.c | 544 |
1 files changed, 343 insertions, 201 deletions
diff --git a/drivers/acpi/tables/tbutils.c b/drivers/acpi/tables/tbutils.c index 3620ac5f868..2f4ab751d77 100644 --- a/drivers/acpi/tables/tbutils.c +++ b/drivers/acpi/tables/tbutils.c @@ -48,11 +48,52 @@ ACPI_MODULE_NAME("tbutils") /* Local prototypes */ -static void acpi_tb_parse_fadt(struct acpi_table_fadt *fadt, u8 flags); +static void acpi_tb_parse_fadt(acpi_native_uint table_index, u8 flags); + +static void acpi_tb_convert_fadt(void); + +static void +acpi_tb_install_table(acpi_physical_address address, + u8 flags, char *signature, acpi_native_uint table_index); static void inline acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct, - u8 bit_width, acpi_physical_address address); + u8 bit_width, u64 address); + +/* Table used for conversion of FADT to common format */ + +typedef struct acpi_fadt_conversion { + u8 target; + u8 source; + u8 length; + +} acpi_fadt_conversion; + +static struct acpi_fadt_conversion fadt_conversion_table[] = { + {ACPI_FADT_OFFSET(xpm1a_event_block), + ACPI_FADT_OFFSET(pm1a_event_block), + ACPI_FADT_OFFSET(pm1_event_length)}, + {ACPI_FADT_OFFSET(xpm1b_event_block), + ACPI_FADT_OFFSET(pm1b_event_block), + ACPI_FADT_OFFSET(pm1_event_length)}, + {ACPI_FADT_OFFSET(xpm1a_control_block), + ACPI_FADT_OFFSET(pm1a_control_block), + ACPI_FADT_OFFSET(pm1_control_length)}, + {ACPI_FADT_OFFSET(xpm1b_control_block), + ACPI_FADT_OFFSET(pm1b_control_block), + ACPI_FADT_OFFSET(pm1_control_length)}, + {ACPI_FADT_OFFSET(xpm2_control_block), + ACPI_FADT_OFFSET(pm2_control_block), + ACPI_FADT_OFFSET(pm2_control_length)}, + {ACPI_FADT_OFFSET(xpm_timer_block), ACPI_FADT_OFFSET(pm_timer_block), + ACPI_FADT_OFFSET(pm_timer_length)}, + {ACPI_FADT_OFFSET(xgpe0_block), ACPI_FADT_OFFSET(gpe0_block), + ACPI_FADT_OFFSET(gpe0_block_length)}, + {ACPI_FADT_OFFSET(xgpe1_block), ACPI_FADT_OFFSET(gpe1_block), + ACPI_FADT_OFFSET(gpe1_block_length)} +}; + +#define ACPI_FADT_CONVERSION_ENTRIES (sizeof (fadt_conversion_table) / sizeof (struct acpi_fadt_conversion)) /******************************************************************************* * @@ -63,7 +104,7 @@ acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct, * * RETURN: None * - * DESCRIPTION: Print an ACPI table header + * DESCRIPTION: Print an ACPI table header. Special cases for FACS and RSDP. * ******************************************************************************/ @@ -72,12 +113,32 @@ acpi_tb_print_table_header(acpi_physical_address address, struct acpi_table_header *header) { - ACPI_INFO((AE_INFO, - "%4.4s @ 0x%p Length 0x%04X (v%3.3d %6.6s %8.8s 0x%08X %4.4s 0x%08X)", - header->signature, ACPI_CAST_PTR(void, address), - header->length, header->revision, header->oem_id, - header->oem_table_id, header->oem_revision, - header->asl_compiler_id, header->asl_compiler_revision)); + if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_FACS)) { + + /* FACS only has signature and length fields of common table header */ + + ACPI_INFO((AE_INFO, "%4.4s @ 0x%p/0x%04X", + header->signature, ACPI_CAST_PTR(void, address), + header->length)); + } else if (ACPI_COMPARE_NAME(header->signature, ACPI_SIG_RSDP)) { + + /* RSDP has no common fields */ + + ACPI_INFO((AE_INFO, "RSDP @ 0x%p/0x%04X (v%3.3d %6.6s)", + ACPI_CAST_PTR(void, address), + (((struct acpi_table_rsdp *)header)->revision > 0) ? + ((struct acpi_table_rsdp *)header)->length : 20, + ((struct acpi_table_rsdp *)header)->revision, + ((struct acpi_table_rsdp *)header)->oem_id)); + } else { + ACPI_INFO((AE_INFO, + "%4.4s @ 0x%p/0x%04X (v%3.3d %6.6s %8.8s 0x%08X %4.4s 0x%08X)", + header->signature, ACPI_CAST_PTR(void, address), + header->length, header->revision, header->oem_id, + header->oem_table_id, header->oem_revision, + header->asl_compiler_id, + header->asl_compiler_revision)); + } } /******************************************************************************* @@ -96,7 +157,7 @@ acpi_tb_print_table_header(acpi_physical_address address, static void inline acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct, - u8 bit_width, acpi_physical_address address) + u8 bit_width, u64 address) { ACPI_STORE_ADDRESS(new_gas_struct->address, address); @@ -108,6 +169,45 @@ acpi_tb_init_generic_address(struct acpi_generic_address *new_gas_struct, /******************************************************************************* * + * FUNCTION: acpi_tb_validate_checksum + * + * PARAMETERS: Table - ACPI table to verify + * Length - Length of entire table + * + * RETURN: Status + * + * DESCRIPTION: Verifies that the table checksums to zero. Optionally returns + * exception on bad checksum. + * + ******************************************************************************/ + +acpi_status acpi_tb_verify_checksum(struct acpi_table_header *table, u32 length) +{ + u8 checksum; + + /* Compute the checksum on the table */ + + checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length); + + /* Checksum ok? (should be zero) */ + + if (checksum) { + ACPI_WARNING((AE_INFO, + "Incorrect checksum in table [%4.4s] - %2.2X, should be %2.2X", + table->signature, table->checksum, + (u8) (table->checksum - checksum))); + +#if (ACPI_CHECKSUM_ABORT) + + return (AE_BAD_CHECKSUM); +#endif + } + + return (AE_OK); +} + +/******************************************************************************* + * * FUNCTION: acpi_tb_checksum * * PARAMETERS: Buffer - Pointer to memory region to be checked @@ -135,24 +235,38 @@ u8 acpi_tb_checksum(u8 * buffer, acpi_native_uint length) * * FUNCTION: acpi_tb_convert_fadt * - * PARAMETERS: Fadt - FADT table to be converted + * PARAMETERS: None, uses acpi_gbl_FADT * * RETURN: None * - * DESCRIPTION: Converts a BIOS supplied ACPI 1.0 FADT to a local - * ACPI 2.0 FADT. If the BIOS supplied a 2.0 FADT then it is simply - * copied to the local FADT. The ACPI CA software uses this - * local FADT. Thus a significant amount of special #ifdef - * type codeing is saved. + * DESCRIPTION: Converts all versions of the FADT to a common internal format. + * + * NOTE: acpi_gbl_FADT must be of size (struct acpi_table_fadt), and must contain + * a copy of the actual FADT. + * + * ACPICA will use the "X" fields of the FADT for all addresses. + * + * "X" fields are optional extensions to the original V1.0 fields. Even if + * they are present in the structure, they can be optionally not used by + * setting them to zero. Therefore, we must selectively expand V1.0 fields + * if the corresponding X field is zero. + * + * For ACPI 1.0 FADTs, all address fields are expanded to the corresponding + * "X" fields. + * + * For ACPI 2.0 FADTs, any "X" fields that are NULL are filled in by + * expanding the corresponding ACPI 1.0 field. * ******************************************************************************/ -void acpi_tb_convert_fadt(struct acpi_table_fadt *fadt) +static void acpi_tb_convert_fadt(void) { + u8 pm1_register_length; + struct acpi_generic_address *target; + acpi_native_uint i; + + /* Expand the FACS and DSDT addresses as necessary */ - /* - * Convert table pointers to 64-bit fields - */ if (!acpi_gbl_FADT.Xfacs) { acpi_gbl_FADT.Xfacs = (u64) acpi_gbl_FADT.facs; } @@ -162,62 +276,49 @@ void acpi_tb_convert_fadt(struct acpi_table_fadt *fadt) } /* - * Convert the V1.0 block addresses to V2.0 GAS structures + * Expand the V1.0 addresses to the "X" generic address structs, + * as necessary. */ - acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm1a_event_block, - acpi_gbl_FADT.pm1_event_length, - (acpi_physical_address) acpi_gbl_FADT. - pm1a_event_block); - acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm1b_event_block, - acpi_gbl_FADT.pm1_event_length, - (acpi_physical_address) acpi_gbl_FADT. - pm1b_event_block); - acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm1a_control_block, - acpi_gbl_FADT.pm1_control_length, - (acpi_physical_address) acpi_gbl_FADT. - pm1a_control_block); - acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm1b_control_block, - acpi_gbl_FADT.pm1_control_length, - (acpi_physical_address) acpi_gbl_FADT. - pm1b_control_block); - acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm2_control_block, - acpi_gbl_FADT.pm2_control_length, - (acpi_physical_address) acpi_gbl_FADT. - pm2_control_block); - acpi_tb_init_generic_address(&acpi_gbl_FADT.xpm_timer_block, - acpi_gbl_FADT.pm_timer_length, - (acpi_physical_address) acpi_gbl_FADT. - pm_timer_block); - acpi_tb_init_generic_address(&acpi_gbl_FADT.xgpe0_block, 0, - (acpi_physical_address) acpi_gbl_FADT. - gpe0_block); - acpi_tb_init_generic_address(&acpi_gbl_FADT.xgpe1_block, 0, - (acpi_physical_address) acpi_gbl_FADT. - gpe1_block); + for (i = 0; i < ACPI_FADT_CONVERSION_ENTRIES; i++) { + target = + ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT, + fadt_conversion_table[i].target); + + if (!target->address) { + acpi_tb_init_generic_address(target, + *ACPI_ADD_PTR(u8, + &acpi_gbl_FADT, + fadt_conversion_table + [i].length), + *ACPI_ADD_PTR(u64, + &acpi_gbl_FADT, + fadt_conversion_table + [i].source)); + } + } /* - * Create separate GAS structs for the PM1 Enable registers + * Calculate separate GAS structs for the PM1 Enable registers. + * These addresses do not appear (directly) in the FADT, so it is + * useful to calculate them once, here. */ + pm1_register_length = (u8) ACPI_DIV_2(acpi_gbl_FADT.pm1_event_length); + + /* PM1A is required */ + acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable, - (u8) ACPI_DIV_2(acpi_gbl_FADT. - pm1_event_length), - (acpi_physical_address) - (acpi_gbl_FADT.xpm1a_event_block.address + - ACPI_DIV_2(acpi_gbl_FADT. - pm1_event_length))); + pm1_register_length, + (u64) (acpi_gbl_FADT.xpm1a_event_block. + address + pm1_register_length)); + + /* PM1B is optional; leave null if not present */ - /* - * PM1B is optional; leave null if not present - */ if (acpi_gbl_FADT.xpm1b_event_block.address) { acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable, - (u8) ACPI_DIV_2(acpi_gbl_FADT. - pm1_event_length), - (acpi_physical_address) - (acpi_gbl_FADT.xpm1b_event_block. - address + - ACPI_DIV_2(acpi_gbl_FADT. - pm1_event_length))); + pm1_register_length, + (u64) (acpi_gbl_FADT. + xpm1b_event_block.address + + pm1_register_length)); } /* Global FADT is the new common V2.0 FADT */ @@ -227,84 +328,132 @@ void acpi_tb_convert_fadt(struct acpi_table_fadt *fadt) /******************************************************************************* * - * FUNCTION: acpi_tb_parse_fadt + * FUNCTION: acpi_tb_install_table * - * PARAMETERS: Fadt - Pointer to FADT table - * Flags - Flags + * PARAMETERS: Address - Physical address of DSDT or FACS + * Flags - Flags + * Signature - Table signature, NULL if no need to + * match + * table_index - Index into root table array * - * RETURN: none + * RETURN: None * - * DESCRIPTION: This function is called to initialise the FADT, DSDT and FACS - * tables (FADT contains the addresses of the DSDT and FACS) + * DESCRIPTION: Install an ACPI table into the global data structure. * ******************************************************************************/ -static void acpi_tb_parse_fadt(struct acpi_table_fadt *fadt, u8 flags) +static void +acpi_tb_install_table(acpi_physical_address address, + u8 flags, char *signature, acpi_native_uint table_index) { - acpi_physical_address dsdt_address = - (acpi_physical_address) fadt->Xdsdt; - acpi_physical_address facs_address = - (acpi_physical_address) fadt->Xfacs; struct acpi_table_header *table; - if (!dsdt_address) { - goto no_dsdt; + if (!address) { + ACPI_ERROR((AE_INFO, + "Null physical address for ACPI table [%s]", + signature)); + return; } - table = - acpi_os_map_memory(dsdt_address, sizeof(struct acpi_table_header)); + /* Map just the table header */ + + table = acpi_os_map_memory(address, sizeof(struct acpi_table_header)); if (!table) { - goto no_dsdt; + return; + } + + /* If a particular signature is expected, signature must match */ + + if (signature && !ACPI_COMPARE_NAME(table->signature, signature)) { + ACPI_ERROR((AE_INFO, + "Invalid signature 0x%X for ACPI table [%s]", + *ACPI_CAST_PTR(u32, table->signature), signature)); + goto unmap_and_exit; } - /* Initialize the DSDT table */ + /* Initialize the table entry */ + + acpi_gbl_root_table_list.tables[table_index].address = address; + acpi_gbl_root_table_list.tables[table_index].length = table->length; + acpi_gbl_root_table_list.tables[table_index].flags = flags; ACPI_MOVE_32_TO_32(& - (acpi_gbl_root_table_list. - tables[ACPI_TABLE_INDEX_DSDT].signature), - ACPI_SIG_DSDT); + (acpi_gbl_root_table_list.tables[table_index]. + signature), table->signature); - acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].address = - dsdt_address; - acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].length = - table->length; - acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_DSDT].flags = flags; + acpi_tb_print_table_header(address, table); - acpi_tb_print_table_header(dsdt_address, table); + if (table_index == ACPI_TABLE_INDEX_DSDT) { - /* Global integer width is based upon revision of the DSDT */ + /* Global integer width is based upon revision of the DSDT */ - acpi_ut_set_integer_width(table->revision); + acpi_ut_set_integer_width(table->revision); + } + + unmap_and_exit: acpi_os_unmap_memory(table, sizeof(struct acpi_table_header)); +} - no_dsdt: - if (!facs_address) { - return; - } +/******************************************************************************* + * + * FUNCTION: acpi_tb_parse_fadt + * + * PARAMETERS: table_index - Index for the FADT + * Flags - Flags + * + * RETURN: None + * + * DESCRIPTION: Initialize the FADT, DSDT and FACS tables + * (FADT contains the addresses of the DSDT and FACS) + * + ******************************************************************************/ + +static void acpi_tb_parse_fadt(acpi_native_uint table_index, u8 flags) +{ + u32 length; + struct acpi_table_header *table; + + /* + * Special case for the FADT because of multiple versions and the fact + * that it contains pointers to both the DSDT and FACS tables. + * + * Get a local copy of the FADT and convert it to a common format + * Map entire FADT, assumed to be smaller than one page. + */ + length = acpi_gbl_root_table_list.tables[table_index].length; table = - acpi_os_map_memory(facs_address, sizeof(struct acpi_table_header)); + acpi_os_map_memory(acpi_gbl_root_table_list.tables[table_index]. + address, length); if (!table) { return; } - /* Initialize the FACS table */ + /* + * Validate the FADT checksum before we copy the table. Ignore + * checksum error as we want to try to get the DSDT and FACS. + */ + (void)acpi_tb_verify_checksum(table, length); - ACPI_MOVE_32_TO_32(& - (acpi_gbl_root_table_list. - tables[ACPI_TABLE_INDEX_FACS].signature), - ACPI_SIG_FACS); + /* Copy the entire FADT locally */ - acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_FACS].address = - facs_address; - acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_FACS].length = - table->length; - acpi_gbl_root_table_list.tables[ACPI_TABLE_INDEX_FACS].flags = flags; + ACPI_MEMSET(&acpi_gbl_FADT, sizeof(struct acpi_table_fadt), 0); - ACPI_INFO((AE_INFO, "%4.4s @ 0x%p", - table->signature, ACPI_CAST_PTR(void, facs_address))); + ACPI_MEMCPY(&acpi_gbl_FADT, table, + ACPI_MIN(length, sizeof(struct acpi_table_fadt))); + acpi_os_unmap_memory(table, length); - acpi_os_unmap_memory(table, sizeof(struct acpi_table_header)); + /* Convert local FADT to the common internal format */ + + acpi_tb_convert_fadt(); + + /* Extract the DSDT and FACS tables from the FADT */ + + acpi_tb_install_table((acpi_physical_address) acpi_gbl_FADT.Xdsdt, + flags, ACPI_SIG_DSDT, ACPI_TABLE_INDEX_DSDT); + + acpi_tb_install_table((acpi_physical_address) acpi_gbl_FADT.Xfacs, + flags, ACPI_SIG_FACS, ACPI_TABLE_INDEX_FACS); } /******************************************************************************* @@ -325,20 +474,33 @@ static void acpi_tb_parse_fadt(struct acpi_table_fadt *fadt, u8 flags) * ******************************************************************************/ -acpi_status acpi_tb_parse_root_table(struct acpi_table_rsdp *rsdp, u8 flags) +acpi_status +acpi_tb_parse_root_table(acpi_physical_address rsdp_address, u8 flags) { + struct acpi_table_rsdp *rsdp; + acpi_native_uint table_entry_size; + acpi_native_uint i; + u32 table_count; struct acpi_table_header *table; acpi_physical_address address; u32 length; u8 *table_entry; - acpi_native_uint i; - acpi_native_uint pointer_size; - u32 table_count; - u8 checksum; acpi_status status; ACPI_FUNCTION_TRACE(tb_parse_root_table); + /* + * Map the entire RSDP and extract the address of the RSDT or XSDT + */ + rsdp = acpi_os_map_memory(rsdp_address, sizeof(struct acpi_table_rsdp)); + if (!rsdp) { + return_ACPI_STATUS(AE_NO_MEMORY); + } + + acpi_tb_print_table_header(rsdp_address, + ACPI_CAST_PTR(struct acpi_table_header, + rsdp)); + /* Differentiate between RSDT and XSDT root tables */ if (rsdp->revision > 1 && rsdp->xsdt_physical_address) { @@ -347,22 +509,30 @@ acpi_status acpi_tb_parse_root_table(struct acpi_table_rsdp *rsdp, u8 flags) * XSDT if the revision is > 1 and the XSDT pointer is present, as per * the ACPI specification. */ - address = (acpi_native_uint) rsdp->xsdt_physical_address; - pointer_size = sizeof(u64); + address = (acpi_physical_address) rsdp->xsdt_physical_address; + table_entry_size = sizeof(u64); } else { /* Root table is an RSDT (32-bit physical addresses) */ - address = (acpi_native_uint) rsdp->rsdt_physical_address; - pointer_size = sizeof(u32); + address = (acpi_physical_address) rsdp->rsdt_physical_address; + table_entry_size = sizeof(u32); } - /* Map the table header to get the full table length */ + /* + * It is not possible to map more than one entry in some environments, + * so unmap the RSDP here before mapping other tables + */ + acpi_os_unmap_memory(rsdp, sizeof(struct acpi_table_rsdp)); + + /* Map the RSDT/XSDT table header to get the full table length */ table = acpi_os_map_memory(address, sizeof(struct acpi_table_header)); if (!table) { - return (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } + acpi_tb_print_table_header(address, table); + /* Get the length of the full table, verify length and map entire table */ length = table->length; @@ -371,48 +541,45 @@ acpi_status acpi_tb_parse_root_table(struct acpi_table_rsdp *rsdp, u8 flags) if (length < sizeof(struct acpi_table_header)) { ACPI_ERROR((AE_INFO, "Invalid length 0x%X in RSDT/XSDT", length)); - return (AE_INVALID_TABLE_LENGTH); + return_ACPI_STATUS(AE_INVALID_TABLE_LENGTH); } table = acpi_os_map_memory(address, length); if (!table) { - return (AE_NO_MEMORY); + return_ACPI_STATUS(AE_NO_MEMORY); } /* Validate the root table checksum */ - checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, table), length); -#if (ACPI_CHECKSUM_ABORT) - - if (checksum) { + status = acpi_tb_verify_checksum(table, length); + if (ACPI_FAILURE(status)) { acpi_os_unmap_memory(table, length); - return (AE_BAD_CHECKSUM); + return_ACPI_STATUS(status); } -#endif - - acpi_tb_print_table_header(address, table); /* Calculate the number of tables described in the root table */ table_count = - (table->length - sizeof(struct acpi_table_header)) / pointer_size; - - /* Setup loop */ + (table->length - + sizeof(struct acpi_table_header)) / table_entry_size; + /* + * First two entries in the table array are reserved for the DSDT and FACS, + * which are not actually present in the RSDT/XSDT - they come from the FADT + */ table_entry = ACPI_CAST_PTR(u8, table) + sizeof(struct acpi_table_header); acpi_gbl_root_table_list.count = 2; /* - * Initialize the ACPI table entries - * First two entries in the table array are reserved for the DSDT and FACS + * Initialize the root table array from the RSDT/XSDT */ - for (i = 0; i < table_count; ++i, table_entry += pointer_size) { - - /* Ensure there is room for another table entry */ - + for (i = 0; i < table_count; i++) { if (acpi_gbl_root_table_list.count >= acpi_gbl_root_table_list.size) { + + /* There is no more room in the root table array, attempt resize */ + status = acpi_tb_resize_root_table_list(); if (ACPI_FAILURE(status)) { ACPI_WARNING((AE_INFO, @@ -425,20 +592,34 @@ acpi_status acpi_tb_parse_root_table(struct acpi_table_rsdp *rsdp, u8 flags) } } - /* Get the physical address (32-bit for RSDT, 64-bit for XSDT) */ - - if (pointer_size == sizeof(u32)) { + /* + * Get the table physical address (32-bit for RSDT, 64-bit for XSDT) + */ + if ((table_entry_size == sizeof(u32)) || + (sizeof(acpi_physical_address) == sizeof(u32))) { + /* + * 32-bit platform, RSDT: Move 32-bit to 32-bit + * 32-bit platform, XSDT: Truncate 64-bit to 32-bit + * 64-bit platform, RSDT: Expand 32-bit to 64-bit + * + * Note: Addresses are 32-bit aligned in both RSDT and XSDT + */ acpi_gbl_root_table_list. tables[acpi_gbl_root_table_list.count].address = (acpi_physical_address) (*ACPI_CAST_PTR (u32, table_entry)); } else { - acpi_gbl_root_table_list. - tables[acpi_gbl_root_table_list.count].address = - (acpi_physical_address) (*ACPI_CAST_PTR - (u64, table_entry)); + /* + * 64-bit platform, XSDT: Move 64-bit to 64-bit + * + * Note: 64-bit addresses are only 32-bit aligned in the XSDT + */ + ACPI_MOVE_64_TO_64(&acpi_gbl_root_table_list. + tables[acpi_gbl_root_table_list. + count].address, table_entry); } + table_entry += table_entry_size; acpi_gbl_root_table_list.count++; } @@ -448,59 +629,20 @@ acpi_status acpi_tb_parse_root_table(struct acpi_table_rsdp *rsdp, u8 flags) */ acpi_os_unmap_memory(table, length); - /* Initialize all tables other than the DSDT and FACS */ - + /* + * Complete the initialization of the root table array by examining + * the header of each table + */ for (i = 2; i < acpi_gbl_root_table_list.count; i++) { - address = acpi_gbl_root_table_list.tables[i].address; - length = sizeof(struct acpi_table_header); - - table = acpi_os_map_memory(address, length); - if (!table) { - continue; - } - - acpi_gbl_root_table_list.tables[i].length = table->length; - acpi_gbl_root_table_list.tables[i].flags = flags; - - ACPI_MOVE_32_TO_32(& - (acpi_gbl_root_table_list.tables[i]. - signature), table->signature); - - acpi_tb_print_table_header(address, table); - - /* - * Special case for the FADT because of multiple versions - - * get a local copy and convert to common format - */ - if (ACPI_COMPARE_NAME(table->signature, ACPI_SIG_FADT)) { - acpi_os_unmap_memory(table, length); - length = table->length; - - table = acpi_os_map_memory(address, length); - if (!table) { - continue; - } - - /* Copy the entire FADT locally */ - - ACPI_MEMCPY(&acpi_gbl_FADT, table, - ACPI_MIN(table->length, - sizeof(struct acpi_table_fadt))); + acpi_tb_install_table(acpi_gbl_root_table_list.tables[i]. + address, flags, NULL, i); - /* Small table means old revision, convert to new */ + /* Special case for FADT - get the DSDT and FACS */ - if (table->length < sizeof(struct acpi_table_fadt)) { - acpi_tb_convert_fadt(ACPI_CAST_PTR - (struct acpi_table_fadt, - table)); - } - - /* Unmap original FADT */ - - acpi_os_unmap_memory(table, length); - acpi_tb_parse_fadt(&acpi_gbl_FADT, flags); - } else { - acpi_os_unmap_memory(table, length); + if (ACPI_COMPARE_NAME + (&acpi_gbl_root_table_list.tables[i].signature, + ACPI_SIG_FADT)) { + acpi_tb_parse_fadt(i, flags); } } |