diff options
Diffstat (limited to 'drivers/acpi/acpica/hwsleep.c')
| -rw-r--r-- | drivers/acpi/acpica/hwsleep.c | 173 |
1 files changed, 88 insertions, 85 deletions
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c index a2af2a4f2f26..db307a356f08 100644 --- a/drivers/acpi/acpica/hwsleep.c +++ b/drivers/acpi/acpica/hwsleep.c @@ -90,6 +90,7 @@ acpi_set_firmware_waking_vector(u32 physical_address) ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector) +#if ACPI_MACHINE_WIDTH == 64 /******************************************************************************* * * FUNCTION: acpi_set_firmware_waking_vector64 @@ -100,7 +101,8 @@ ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector) * RETURN: Status * * DESCRIPTION: Sets the 64-bit X_firmware_waking_vector field of the FACS, if - * it exists in the table. + * it exists in the table. This function is intended for use with + * 64-bit host operating systems. * ******************************************************************************/ acpi_status @@ -124,6 +126,7 @@ acpi_set_firmware_waking_vector64(u64 physical_address) } ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector64) +#endif /******************************************************************************* * @@ -147,9 +150,8 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep); - /* - * _PSW methods could be run here to enable wake-on keyboard, LAN, etc. - */ + /* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */ + status = acpi_get_sleep_type_data(sleep_state, &acpi_gbl_sleep_type_a, &acpi_gbl_sleep_type_b); @@ -209,6 +211,12 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep) +static unsigned int gts, bfs; +module_param(gts, uint, 0644); +module_param(bfs, uint, 0644); +MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend."); +MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".); + /******************************************************************************* * * FUNCTION: acpi_enter_sleep_state @@ -223,8 +231,8 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep) ******************************************************************************/ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) { - u32 PM1Acontrol; - u32 PM1Bcontrol; + u32 pm1a_control; + u32 pm1b_control; struct acpi_bit_register_info *sleep_type_reg_info; struct acpi_bit_register_info *sleep_enable_reg_info; u32 in_value; @@ -242,13 +250,14 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) } sleep_type_reg_info = - acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE_A); + acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE); sleep_enable_reg_info = acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE); /* Clear wake status */ - status = acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1); + status = + acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } @@ -275,38 +284,41 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) return_ACPI_STATUS(status); } - /* Execute the _GTS method */ + if (gts) { + /* Execute the _GTS method */ - arg_list.count = 1; - arg_list.pointer = &arg; - arg.type = ACPI_TYPE_INTEGER; - arg.integer.value = sleep_state; + arg_list.count = 1; + arg_list.pointer = &arg; + arg.type = ACPI_TYPE_INTEGER; + arg.integer.value = sleep_state; - status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL); - if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { - return_ACPI_STATUS(status); + status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + return_ACPI_STATUS(status); + } } /* Get current value of PM1A control */ - status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol); + status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, + &pm1a_control); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } ACPI_DEBUG_PRINT((ACPI_DB_INIT, "Entering sleep state [S%d]\n", sleep_state)); - /* Clear SLP_EN and SLP_TYP fields */ + /* Clear the SLP_EN and SLP_TYP fields */ - PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | - sleep_enable_reg_info->access_bit_mask); - PM1Bcontrol = PM1Acontrol; + pm1a_control &= ~(sleep_type_reg_info->access_bit_mask | + sleep_enable_reg_info->access_bit_mask); + pm1b_control = pm1a_control; - /* Insert SLP_TYP bits */ + /* Insert the SLP_TYP bits */ - PM1Acontrol |= + pm1a_control |= (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position); - PM1Bcontrol |= + pm1b_control |= (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position); /* @@ -314,37 +326,25 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) * poorly implemented hardware. */ - /* Write #1: fill in SLP_TYP data */ + /* Write #1: write the SLP_TYP data to the PM1 Control registers */ - status = acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, - PM1Acontrol); + status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } - status = acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, - PM1Bcontrol); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Insert SLP_ENABLE bit */ + /* Insert the sleep enable (SLP_EN) bit */ - PM1Acontrol |= sleep_enable_reg_info->access_bit_mask; - PM1Bcontrol |= sleep_enable_reg_info->access_bit_mask; + pm1a_control |= sleep_enable_reg_info->access_bit_mask; + pm1b_control |= sleep_enable_reg_info->access_bit_mask; - /* Write #2: SLP_TYP + SLP_EN */ + /* Flush caches, as per ACPI specification */ ACPI_FLUSH_CPU_CACHE(); - status = acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, - PM1Acontrol); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } + /* Write #2: Write both SLP_TYP + SLP_EN */ - status = acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, - PM1Bcontrol); + status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } @@ -357,8 +357,8 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) * Wait ten seconds, then try again. This is to get S4/S5 to work on * all machines. * - * We wait so long to allow chipsets that poll this reg very slowly to - * still read the right value. Ideally, this block would go + * We wait so long to allow chipsets that poll this reg very slowly + * to still read the right value. Ideally, this block would go * away entirely. */ acpi_os_stall(10000000); @@ -374,7 +374,7 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) /* Wait until we enter sleep state */ do { - status = acpi_get_register_unlocked(ACPI_BITREG_WAKE_STATUS, + status = acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); @@ -408,7 +408,10 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void) ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_s4bios); - status = acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1); + /* Clear the wake status bit (PM1) */ + + status = + acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } @@ -435,12 +438,13 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void) ACPI_FLUSH_CPU_CACHE(); - status = acpi_os_write_port(acpi_gbl_FADT.smi_command, + status = acpi_hw_write_port(acpi_gbl_FADT.smi_command, (u32) acpi_gbl_FADT.S4bios_request, 8); do { acpi_os_stall(1000); - status = acpi_get_register(ACPI_BITREG_WAKE_STATUS, &in_value); + status = + acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } @@ -471,8 +475,8 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) acpi_status status; struct acpi_bit_register_info *sleep_type_reg_info; struct acpi_bit_register_info *sleep_enable_reg_info; - u32 PM1Acontrol; - u32 PM1Bcontrol; + u32 pm1a_control; + u32 pm1b_control; ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep); @@ -486,53 +490,50 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) &acpi_gbl_sleep_type_b); if (ACPI_SUCCESS(status)) { sleep_type_reg_info = - acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE_A); + acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE); sleep_enable_reg_info = acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE); /* Get current value of PM1A control */ status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, - &PM1Acontrol); + &pm1a_control); if (ACPI_SUCCESS(status)) { - /* Clear SLP_EN and SLP_TYP fields */ + /* Clear the SLP_EN and SLP_TYP fields */ - PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask | - sleep_enable_reg_info-> - access_bit_mask); - PM1Bcontrol = PM1Acontrol; + pm1a_control &= ~(sleep_type_reg_info->access_bit_mask | + sleep_enable_reg_info-> + access_bit_mask); + pm1b_control = pm1a_control; - /* Insert SLP_TYP bits */ + /* Insert the SLP_TYP bits */ - PM1Acontrol |= - (acpi_gbl_sleep_type_a << sleep_type_reg_info-> - bit_position); - PM1Bcontrol |= - (acpi_gbl_sleep_type_b << sleep_type_reg_info-> - bit_position); + pm1a_control |= (acpi_gbl_sleep_type_a << + sleep_type_reg_info->bit_position); + pm1b_control |= (acpi_gbl_sleep_type_b << + sleep_type_reg_info->bit_position); - /* Just ignore any errors */ + /* Write the control registers and ignore any errors */ - (void)acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, - PM1Acontrol); - (void)acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, - PM1Bcontrol); + (void)acpi_hw_write_pm1_control(pm1a_control, + pm1b_control); } } - /* Execute the _BFS method */ + if (bfs) { + /* Execute the _BFS method */ - arg_list.count = 1; - arg_list.pointer = &arg; - arg.type = ACPI_TYPE_INTEGER; - arg.integer.value = sleep_state; + arg_list.count = 1; + arg_list.pointer = &arg; + arg.type = ACPI_TYPE_INTEGER; + arg.integer.value = sleep_state; - status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL); - if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { - ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS")); + status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS")); + } } - return_ACPI_STATUS(status); } @@ -603,19 +604,21 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state) * it to determine whether the system is rebooting or resuming. Clear * it for compatibility. */ - acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1); + acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS, 1); acpi_gbl_system_awake_and_running = TRUE; /* Enable power button */ (void) - acpi_set_register(acpi_gbl_fixed_event_info - [ACPI_EVENT_POWER_BUTTON].enable_register_id, 1); + acpi_write_bit_register(acpi_gbl_fixed_event_info + [ACPI_EVENT_POWER_BUTTON]. + enable_register_id, ACPI_ENABLE_EVENT); (void) - acpi_set_register(acpi_gbl_fixed_event_info - [ACPI_EVENT_POWER_BUTTON].status_register_id, 1); + acpi_write_bit_register(acpi_gbl_fixed_event_info + [ACPI_EVENT_POWER_BUTTON]. + status_register_id, ACPI_CLEAR_STATUS); arg.integer.value = ACPI_SST_WORKING; status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL); |