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Diffstat (limited to 'drivers/acpi/acpica/hwsleep.c')
-rw-r--r--drivers/acpi/acpica/hwsleep.c173
1 files changed, 88 insertions, 85 deletions
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index a2af2a4f2f2..db307a356f0 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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-03 08:52:57 +0000