diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/tables/tbfadt.c | 173 |
1 files changed, 105 insertions, 68 deletions
diff --git a/drivers/acpi/tables/tbfadt.c b/drivers/acpi/tables/tbfadt.c index b4ce2074c91..7dec0af3f26 100644 --- a/drivers/acpi/tables/tbfadt.c +++ b/drivers/acpi/tables/tbfadt.c @@ -61,9 +61,10 @@ static void acpi_tb_validate_fadt(void); typedef struct acpi_fadt_info { char *name; - u8 target; - u8 source; + u8 address64; + u8 address32; u8 length; + u8 default_length; u8 type; } acpi_fadt_info; @@ -72,37 +73,61 @@ typedef struct acpi_fadt_info { #define ACPI_FADT_SEPARATE_LENGTH 2 static struct acpi_fadt_info fadt_info_table[] = { - {"Pm1aEventBlock", ACPI_FADT_OFFSET(xpm1a_event_block), + {"Pm1aEventBlock", + ACPI_FADT_OFFSET(xpm1a_event_block), ACPI_FADT_OFFSET(pm1a_event_block), - ACPI_FADT_OFFSET(pm1_event_length), ACPI_FADT_REQUIRED}, + ACPI_FADT_OFFSET(pm1_event_length), + ACPI_PM1_REGISTER_WIDTH * 2, /* Enable + Status register */ + ACPI_FADT_REQUIRED}, - {"Pm1bEventBlock", ACPI_FADT_OFFSET(xpm1b_event_block), + {"Pm1bEventBlock", + ACPI_FADT_OFFSET(xpm1b_event_block), ACPI_FADT_OFFSET(pm1b_event_block), - ACPI_FADT_OFFSET(pm1_event_length), 0}, + ACPI_FADT_OFFSET(pm1_event_length), + ACPI_PM1_REGISTER_WIDTH * 2, /* Enable + Status register */ + 0}, - {"Pm1aControlBlock", ACPI_FADT_OFFSET(xpm1a_control_block), + {"Pm1aControlBlock", + ACPI_FADT_OFFSET(xpm1a_control_block), ACPI_FADT_OFFSET(pm1a_control_block), - ACPI_FADT_OFFSET(pm1_control_length), ACPI_FADT_REQUIRED}, + ACPI_FADT_OFFSET(pm1_control_length), + ACPI_PM1_REGISTER_WIDTH, + ACPI_FADT_REQUIRED}, - {"Pm1bControlBlock", ACPI_FADT_OFFSET(xpm1b_control_block), + {"Pm1bControlBlock", + ACPI_FADT_OFFSET(xpm1b_control_block), ACPI_FADT_OFFSET(pm1b_control_block), - ACPI_FADT_OFFSET(pm1_control_length), 0}, + ACPI_FADT_OFFSET(pm1_control_length), + ACPI_PM1_REGISTER_WIDTH, + 0}, - {"Pm2ControlBlock", ACPI_FADT_OFFSET(xpm2_control_block), + {"Pm2ControlBlock", + ACPI_FADT_OFFSET(xpm2_control_block), ACPI_FADT_OFFSET(pm2_control_block), - ACPI_FADT_OFFSET(pm2_control_length), ACPI_FADT_SEPARATE_LENGTH}, + ACPI_FADT_OFFSET(pm2_control_length), + ACPI_PM2_REGISTER_WIDTH, + ACPI_FADT_SEPARATE_LENGTH}, - {"PmTimerBlock", ACPI_FADT_OFFSET(xpm_timer_block), + {"PmTimerBlock", + ACPI_FADT_OFFSET(xpm_timer_block), ACPI_FADT_OFFSET(pm_timer_block), - ACPI_FADT_OFFSET(pm_timer_length), ACPI_FADT_REQUIRED}, + ACPI_FADT_OFFSET(pm_timer_length), + ACPI_PM_TIMER_WIDTH, + ACPI_FADT_REQUIRED}, - {"Gpe0Block", ACPI_FADT_OFFSET(xgpe0_block), + {"Gpe0Block", + ACPI_FADT_OFFSET(xgpe0_block), ACPI_FADT_OFFSET(gpe0_block), - ACPI_FADT_OFFSET(gpe0_block_length), ACPI_FADT_SEPARATE_LENGTH}, + ACPI_FADT_OFFSET(gpe0_block_length), + 0, + ACPI_FADT_SEPARATE_LENGTH}, - {"Gpe1Block", ACPI_FADT_OFFSET(xgpe1_block), + {"Gpe1Block", + ACPI_FADT_OFFSET(xgpe1_block), ACPI_FADT_OFFSET(gpe1_block), - ACPI_FADT_OFFSET(gpe1_block_length), ACPI_FADT_SEPARATE_LENGTH} + ACPI_FADT_OFFSET(gpe1_block_length), + 0, + ACPI_FADT_SEPARATE_LENGTH} }; #define ACPI_FADT_INFO_ENTRIES (sizeof (fadt_info_table) / sizeof (struct acpi_fadt_info)) @@ -279,8 +304,9 @@ void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length) static void acpi_tb_convert_fadt(void) { - u8 pm1_register_length; - struct acpi_generic_address *target; + u8 pm1_register_bit_width; + u8 pm1_register_byte_width; + struct acpi_generic_address *target64; u32 i; /* Update the local FADT table header length */ @@ -326,21 +352,22 @@ static void acpi_tb_convert_fadt(void) } /* - * Expand the ACPI 1.0 32-bit V1.0 addresses to the ACPI 2.0 64-bit "X" - * generic address structures as necessary. + * Expand the ACPI 1.0 32-bit addresses to the ACPI 2.0 64-bit "X" + * generic address structures as necessary. Later code will always use + * the 64-bit address structures. */ for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) { - target = + target64 = ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT, - fadt_info_table[i].target); + fadt_info_table[i].address64); - /* Expand only if the X target is null */ + /* Expand only if the 64-bit X target is null */ - if (!target->address) { + if (!target64->address) { - /* The space_id is always I/O for the legacy address fields */ + /* The space_id is always I/O for the 32-bit legacy address fields */ - acpi_tb_init_generic_address(target, + acpi_tb_init_generic_address(target64, ACPI_ADR_SPACE_SYSTEM_IO, *ACPI_ADD_PTR(u8, &acpi_gbl_FADT, @@ -350,7 +377,7 @@ static void acpi_tb_convert_fadt(void) &acpi_gbl_FADT, fadt_info_table [i]. - source)); + address32)); } } @@ -359,19 +386,53 @@ static void acpi_tb_convert_fadt(void) acpi_tb_validate_fadt(); /* - * Get the length of the individual PM1 registers. Each register is - * defined to be the event block length / 2. + * Optionally check all register lengths against the default values and + * update them if they are incorrect. */ - pm1_register_length = (u8)ACPI_DIV_2(acpi_gbl_FADT.pm1_event_length); + if (acpi_gbl_use_default_register_widths) { + for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) { + target64 = + ACPI_ADD_PTR(struct acpi_generic_address, + &acpi_gbl_FADT, + fadt_info_table[i].address64); + + /* + * If a valid register (Address != 0) and the (default_length > 0) + * (Not a GPE register), then check the width against the default. + */ + if ((target64->address) && + (fadt_info_table[i].default_length > 0) && + (fadt_info_table[i].default_length != + target64->bit_width)) { + ACPI_WARNING((AE_INFO, + "Invalid length for %s: %d, using default %d", + fadt_info_table[i].name, + target64->bit_width, + fadt_info_table[i]. + default_length)); + + /* Incorrect size, set width to the default */ + + target64->bit_width = + fadt_info_table[i].default_length; + } + } + } + + /* + * Get the length of the individual PM1 registers (enable and status). + * Each register is defined to be (event block length / 2). + */ + pm1_register_bit_width = + (u8)ACPI_DIV_2(acpi_gbl_FADT.xpm1a_event_block.bit_width); + pm1_register_byte_width = (u8)ACPI_DIV_8(pm1_register_bit_width); /* * Adjust the lengths of the PM1 Event Blocks so that they can be used to - * access the PM1 status register(s). + * access the PM1 status register(s). Use (width / 2) */ - acpi_gbl_FADT.xpm1a_event_block.bit_width = - (u8)ACPI_MUL_8(pm1_register_length); - acpi_gbl_FADT.xpm1b_event_block.bit_width = - (u8)ACPI_MUL_8(pm1_register_length); + acpi_gbl_FADT.xpm1a_event_block.bit_width = pm1_register_bit_width; + acpi_gbl_FADT.xpm1b_event_block.bit_width = pm1_register_bit_width; /* * Calculate separate GAS structs for the PM1 Enable registers. @@ -398,9 +459,9 @@ static void acpi_tb_convert_fadt(void) acpi_tb_init_generic_address(&acpi_gbl_xpm1a_enable, acpi_gbl_FADT.xpm1a_event_block.space_id, - pm1_register_length, + pm1_register_byte_width, (acpi_gbl_FADT.xpm1a_event_block.address + - pm1_register_length)); + pm1_register_byte_width)); /* Don't forget to copy space_id of the GAS */ acpi_gbl_xpm1a_enable.space_id = acpi_gbl_FADT.xpm1a_event_block.space_id; @@ -417,38 +478,14 @@ static void acpi_tb_convert_fadt(void) acpi_gbl_FADT.pm1_event_length); acpi_tb_init_generic_address(&acpi_gbl_xpm1b_enable, acpi_gbl_FADT.xpm1b_event_block.space_id, - pm1_register_length, + pm1_register_byte_width, (acpi_gbl_FADT.xpm1b_event_block. - address + pm1_register_length)); + address + pm1_register_byte_width)); /* Don't forget to copy space_id of the GAS */ acpi_gbl_xpm1b_enable.space_id = acpi_gbl_FADT.xpm1b_event_block.space_id; } - - if (acpi_gbl_use_default_register_widths) { - /* - * Optionally, use the default sizes for the ACPI registers. - * Some FADTs do not have the correct length(s). - * - * Note: Xpm1a_event_block and Xpm1b_event_block are used to access the PM1 - * status registers. The PM1 enable registers are created above. - */ - acpi_gbl_xpm1a_enable.bit_width = ACPI_PM1_REGISTER_WIDTH; - acpi_gbl_xpm1b_enable.bit_width = ACPI_PM1_REGISTER_WIDTH; - - acpi_gbl_FADT.xpm1a_event_block.bit_width = - ACPI_PM1_REGISTER_WIDTH; - acpi_gbl_FADT.xpm1b_event_block.bit_width = - ACPI_PM1_REGISTER_WIDTH; - acpi_gbl_FADT.xpm1a_control_block.bit_width = - ACPI_PM1_REGISTER_WIDTH; - acpi_gbl_FADT.xpm1b_control_block.bit_width = - ACPI_PM1_REGISTER_WIDTH; - acpi_gbl_FADT.xpm2_control_block.bit_width = - ACPI_PM2_REGISTER_WIDTH; - acpi_gbl_FADT.xpm_timer_block.bit_width = ACPI_PM_TIMER_WIDTH; - } } /****************************************************************************** @@ -511,10 +548,10 @@ static void acpi_tb_validate_fadt(void) */ address64 = ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT, - fadt_info_table[i].target); + fadt_info_table[i].address64); address32 = ACPI_ADD_PTR(u32, &acpi_gbl_FADT, - fadt_info_table[i].source); + fadt_info_table[i].address32); length = *ACPI_ADD_PTR(u8, &acpi_gbl_FADT, fadt_info_table[i].length); @@ -522,7 +559,7 @@ static void acpi_tb_validate_fadt(void) /* * For each extended field, check for length mismatch between the - * legacy length field and the corresonding 64-bit X length field. + * legacy length field and the corresponding 64-bit X length field. */ if (address64 && (address64->bit_width != ACPI_MUL_8(length))) { ACPI_WARNING((AE_INFO, |