diff options
Diffstat (limited to 'drivers/acpi/acpica/tbfadt.c')
| -rw-r--r-- | drivers/acpi/acpica/tbfadt.c | 136 |
1 files changed, 69 insertions, 67 deletions
diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c index 620806965243..046c4d0394ee 100644 --- a/drivers/acpi/acpica/tbfadt.c +++ b/drivers/acpi/acpica/tbfadt.c @@ -344,23 +344,27 @@ void acpi_tb_parse_fadt(void) /* Obtain the DSDT and FACS tables via their addresses within the FADT */ - acpi_tb_install_fixed_table((acpi_physical_address)acpi_gbl_FADT.Xdsdt, - ACPI_SIG_DSDT, &acpi_gbl_dsdt_index); + acpi_tb_install_standard_table((acpi_physical_address)acpi_gbl_FADT. + Xdsdt, + ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL, + FALSE, TRUE, &acpi_gbl_dsdt_index); /* If Hardware Reduced flag is set, there is no FACS */ if (!acpi_gbl_reduced_hardware) { if (acpi_gbl_FADT.facs) { - acpi_tb_install_fixed_table((acpi_physical_address) - acpi_gbl_FADT.facs, - ACPI_SIG_FACS, - &acpi_gbl_facs_index); + acpi_tb_install_standard_table((acpi_physical_address) + acpi_gbl_FADT.facs, + ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL, + FALSE, TRUE, + &acpi_gbl_facs_index); } if (acpi_gbl_FADT.Xfacs) { - acpi_tb_install_fixed_table((acpi_physical_address) - acpi_gbl_FADT.Xfacs, - ACPI_SIG_FACS, - &acpi_gbl_xfacs_index); + acpi_tb_install_standard_table((acpi_physical_address) + acpi_gbl_FADT.Xfacs, + ACPI_TABLE_ORIGIN_INTERNAL_PHYSICAL, + FALSE, TRUE, + &acpi_gbl_xfacs_index); } } } @@ -476,17 +480,19 @@ static void acpi_tb_convert_fadt(void) u32 i; /* - * For ACPI 1.0 FADTs (revision 1 or 2), ensure that reserved fields which + * For ACPI 1.0 FADTs (revision 1), ensure that reserved fields which * should be zero are indeed zero. This will workaround BIOSs that * inadvertently place values in these fields. * * The ACPI 1.0 reserved fields that will be zeroed are the bytes located * at offset 45, 55, 95, and the word located at offset 109, 110. * - * Note: The FADT revision value is unreliable. Only the length can be - * trusted. + * Note: The FADT revision value is unreliable because of BIOS errors. + * The table length is instead used as the final word on the version. + * + * Note: FADT revision 3 is the ACPI 2.0 version of the FADT. */ - if (acpi_gbl_FADT.header.length <= ACPI_FADT_V2_SIZE) { + if (acpi_gbl_FADT.header.length <= ACPI_FADT_V3_SIZE) { acpi_gbl_FADT.preferred_profile = 0; acpi_gbl_FADT.pstate_control = 0; acpi_gbl_FADT.cst_control = 0; @@ -552,78 +558,74 @@ static void acpi_tb_convert_fadt(void) * * Address32 zero, Address64 [don't care] - Use Address64 * + * No override: if acpi_gbl_use32_bit_fadt_addresses is FALSE, and: * Address32 non-zero, Address64 zero - Copy/use Address32 * Address32 non-zero == Address64 non-zero - Use Address64 * Address32 non-zero != Address64 non-zero - Warning, use Address64 * * Override: if acpi_gbl_use32_bit_fadt_addresses is TRUE, and: + * Address32 non-zero, Address64 zero - Copy/use Address32 + * Address32 non-zero == Address64 non-zero - Copy/use Address32 * Address32 non-zero != Address64 non-zero - Warning, copy/use Address32 * * Note: space_id is always I/O for 32-bit legacy address fields */ if (address32) { - if (!address64->address) { + if (address64->address) { + if (address64->address != (u64)address32) { + + /* Address mismatch */ + + ACPI_BIOS_WARNING((AE_INFO, + "32/64X address mismatch in FADT/%s: " + "0x%8.8X/0x%8.8X%8.8X, using %u-bit address", + name, address32, + ACPI_FORMAT_UINT64 + (address64->address), + acpi_gbl_use32_bit_fadt_addresses + ? 32 : 64)); + } - /* 64-bit address is zero, use 32-bit address */ + /* + * For each extended field, check for length mismatch + * between the legacy length field and the corresponding + * 64-bit X length field. + * Note: If the legacy length field is > 0xFF bits, ignore + * this check. (GPE registers can be larger than the + * 64-bit GAS structure can accomodate, 0xFF bits). + */ + if ((ACPI_MUL_8(length) <= ACPI_UINT8_MAX) && + (address64->bit_width != + ACPI_MUL_8(length))) { + ACPI_BIOS_WARNING((AE_INFO, + "32/64X length mismatch in FADT/%s: %u/%u", + name, + ACPI_MUL_8(length), + address64-> + bit_width)); + } + } + /* + * Hardware register access code always uses the 64-bit fields. + * So if the 64-bit field is zero or is to be overridden, + * initialize it with the 32-bit fields. + * Note that when the 32-bit address favor is specified, the + * 64-bit fields are always re-initialized so that + * access_size/bit_width/bit_offset fields can be correctly + * configured to the values to trigger a 32-bit compatible + * access mode in the hardware register access code. + */ + if (!address64->address + || acpi_gbl_use32_bit_fadt_addresses) { acpi_tb_init_generic_address(address64, ACPI_ADR_SPACE_SYSTEM_IO, - *ACPI_ADD_PTR(u8, - &acpi_gbl_FADT, - fadt_info_table - [i]. - length), + length, (u64)address32, name, flags); - } else if (address64->address != (u64)address32) { - - /* Address mismatch */ - - ACPI_BIOS_WARNING((AE_INFO, - "32/64X address mismatch in FADT/%s: " - "0x%8.8X/0x%8.8X%8.8X, using %u-bit address", - name, address32, - ACPI_FORMAT_UINT64 - (address64->address), - acpi_gbl_use32_bit_fadt_addresses - ? 32 : 64)); - - if (acpi_gbl_use32_bit_fadt_addresses) { - - /* 32-bit address override */ - - acpi_tb_init_generic_address(address64, - ACPI_ADR_SPACE_SYSTEM_IO, - *ACPI_ADD_PTR - (u8, - &acpi_gbl_FADT, - fadt_info_table - [i]. - length), - (u64) - address32, - name, - flags); - } } } - /* - * For each extended field, check for length mismatch between the - * legacy length field and the corresponding 64-bit X length field. - * Note: If the legacy length field is > 0xFF bits, ignore this - * check. (GPE registers can be larger than the 64-bit GAS structure - * can accomodate, 0xFF bits). - */ - if (address64->address && - (ACPI_MUL_8(length) <= ACPI_UINT8_MAX) && - (address64->bit_width != ACPI_MUL_8(length))) { - ACPI_BIOS_WARNING((AE_INFO, - "32/64X length mismatch in FADT/%s: %u/%u", - name, ACPI_MUL_8(length), - address64->bit_width)); - } - if (fadt_info_table[i].flags & ACPI_FADT_REQUIRED) { /* * Field is required (Pm1a_event, Pm1a_control). |