455 lines
14 KiB
C
455 lines
14 KiB
C
|
/******************************************************************************
|
||
|
|
*
|
||
|
|
* Name: hwxfsleep.c - ACPI Hardware Sleep/Wake External Interfaces
|
||
|
|
*
|
||
|
|
*****************************************************************************/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2000 - 2017, Intel Corp.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions, and the following disclaimer,
|
||
|
|
* without modification.
|
||
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
||
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
||
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
||
|
|
* including a substantially similar Disclaimer requirement for further
|
||
|
|
* binary redistribution.
|
||
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
||
|
|
* of any contributors may be used to endorse or promote products derived
|
||
|
|
* from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* Alternatively, this software may be distributed under the terms of the
|
||
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
||
|
|
* Software Foundation.
|
||
|
|
*
|
||
|
|
* NO WARRANTY
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
||
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
||
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define EXPORT_ACPI_INTERFACES
|
||
|
|
|
||
|
|
#include <acpi/acpi.h>
|
||
|
|
#include "accommon.h"
|
||
|
|
|
||
|
|
#define _COMPONENT ACPI_HARDWARE
|
||
|
|
ACPI_MODULE_NAME("hwxfsleep")
|
||
|
|
|
||
|
|
/* Local prototypes */
|
||
|
|
#if (!ACPI_REDUCED_HARDWARE)
|
||
|
|
static acpi_status
|
||
|
|
acpi_hw_set_firmware_waking_vector(struct acpi_table_facs *facs,
|
||
|
|
acpi_physical_address physical_address,
|
||
|
|
acpi_physical_address physical_address64);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Dispatch table used to efficiently branch to the various sleep
|
||
|
|
* functions.
|
||
|
|
*/
|
||
|
|
#define ACPI_SLEEP_FUNCTION_ID 0
|
||
|
|
#define ACPI_WAKE_PREP_FUNCTION_ID 1
|
||
|
|
#define ACPI_WAKE_FUNCTION_ID 2
|
||
|
|
|
||
|
|
/* Legacy functions are optional, based upon ACPI_REDUCED_HARDWARE */
|
||
|
|
|
||
|
|
static struct acpi_sleep_functions acpi_sleep_dispatch[] = {
|
||
|
|
{ACPI_STRUCT_INIT(legacy_function,
|
||
|
|
ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_sleep)),
|
||
|
|
ACPI_STRUCT_INIT(extended_function,
|
||
|
|
acpi_hw_extended_sleep)},
|
||
|
|
{ACPI_STRUCT_INIT(legacy_function,
|
||
|
|
ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake_prep)),
|
||
|
|
ACPI_STRUCT_INIT(extended_function,
|
||
|
|
acpi_hw_extended_wake_prep)},
|
||
|
|
{ACPI_STRUCT_INIT(legacy_function,
|
||
|
|
ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake)),
|
||
|
|
ACPI_STRUCT_INIT(extended_function,
|
||
|
|
acpi_hw_extended_wake)}
|
||
|
|
};
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These functions are removed for the ACPI_REDUCED_HARDWARE case:
|
||
|
|
* acpi_set_firmware_waking_vector
|
||
|
|
* acpi_enter_sleep_state_s4bios
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if (!ACPI_REDUCED_HARDWARE)
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_hw_set_firmware_waking_vector
|
||
|
|
*
|
||
|
|
* PARAMETERS: facs - Pointer to FACS table
|
||
|
|
* physical_address - 32-bit physical address of ACPI real mode
|
||
|
|
* entry point
|
||
|
|
* physical_address64 - 64-bit physical address of ACPI protected
|
||
|
|
* mode entry point
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Sets the firmware_waking_vector fields of the FACS
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
static acpi_status
|
||
|
|
acpi_hw_set_firmware_waking_vector(struct acpi_table_facs *facs,
|
||
|
|
acpi_physical_address physical_address,
|
||
|
|
acpi_physical_address physical_address64)
|
||
|
|
{
|
||
|
|
ACPI_FUNCTION_TRACE(acpi_hw_set_firmware_waking_vector);
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* According to the ACPI specification 2.0c and later, the 64-bit
|
||
|
|
* waking vector should be cleared and the 32-bit waking vector should
|
||
|
|
* be used, unless we want the wake-up code to be called by the BIOS in
|
||
|
|
* Protected Mode. Some systems (for example HP dv5-1004nr) are known
|
||
|
|
* to fail to resume if the 64-bit vector is used.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Set the 32-bit vector */
|
||
|
|
|
||
|
|
facs->firmware_waking_vector = (u32)physical_address;
|
||
|
|
|
||
|
|
if (facs->length > 32) {
|
||
|
|
if (facs->version >= 1) {
|
||
|
|
|
||
|
|
/* Set the 64-bit vector */
|
||
|
|
|
||
|
|
facs->xfirmware_waking_vector = physical_address64;
|
||
|
|
} else {
|
||
|
|
/* Clear the 64-bit vector if it exists */
|
||
|
|
|
||
|
|
facs->xfirmware_waking_vector = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_set_firmware_waking_vector
|
||
|
|
*
|
||
|
|
* PARAMETERS: physical_address - 32-bit physical address of ACPI real mode
|
||
|
|
* entry point
|
||
|
|
* physical_address64 - 64-bit physical address of ACPI protected
|
||
|
|
* mode entry point
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Sets the firmware_waking_vector fields of the FACS
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status
|
||
|
|
acpi_set_firmware_waking_vector(acpi_physical_address physical_address,
|
||
|
|
acpi_physical_address physical_address64)
|
||
|
|
{
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector);
|
||
|
|
|
||
|
|
if (acpi_gbl_FACS) {
|
||
|
|
(void)acpi_hw_set_firmware_waking_vector(acpi_gbl_FACS,
|
||
|
|
physical_address,
|
||
|
|
physical_address64);
|
||
|
|
}
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector)
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_enter_sleep_state_s4bios
|
||
|
|
*
|
||
|
|
* PARAMETERS: None
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Perform a S4 bios request.
|
||
|
|
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
acpi_status acpi_enter_sleep_state_s4bios(void)
|
||
|
|
{
|
||
|
|
u32 in_value;
|
||
|
|
acpi_status status;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_s4bios);
|
||
|
|
|
||
|
|
/* 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);
|
||
|
|
}
|
||
|
|
|
||
|
|
status = acpi_hw_clear_acpi_status();
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 1) Disable/Clear all GPEs
|
||
|
|
* 2) Enable all wakeup GPEs
|
||
|
|
*/
|
||
|
|
status = acpi_hw_disable_all_gpes();
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
acpi_gbl_system_awake_and_running = FALSE;
|
||
|
|
|
||
|
|
status = acpi_hw_enable_all_wakeup_gpes();
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_FLUSH_CPU_CACHE();
|
||
|
|
|
||
|
|
status = acpi_hw_write_port(acpi_gbl_FADT.smi_command,
|
||
|
|
(u32)acpi_gbl_FADT.s4_bios_request, 8);
|
||
|
|
|
||
|
|
do {
|
||
|
|
acpi_os_stall(ACPI_USEC_PER_MSEC);
|
||
|
|
status =
|
||
|
|
acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
} while (!in_value);
|
||
|
|
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios)
|
||
|
|
#endif /* !ACPI_REDUCED_HARDWARE */
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_hw_sleep_dispatch
|
||
|
|
*
|
||
|
|
* PARAMETERS: sleep_state - Which sleep state to enter/exit
|
||
|
|
* function_id - Sleep, wake_prep, or Wake
|
||
|
|
*
|
||
|
|
* RETURN: Status from the invoked sleep handling function.
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Dispatch a sleep/wake request to the appropriate handling
|
||
|
|
* function.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
struct acpi_sleep_functions *sleep_functions =
|
||
|
|
&acpi_sleep_dispatch[function_id];
|
||
|
|
|
||
|
|
#if (!ACPI_REDUCED_HARDWARE)
|
||
|
|
/*
|
||
|
|
* If the Hardware Reduced flag is set (from the FADT), we must
|
||
|
|
* use the extended sleep registers (FADT). Note: As per the ACPI
|
||
|
|
* specification, these extended registers are to be used for HW-reduced
|
||
|
|
* platforms only. They are not general-purpose replacements for the
|
||
|
|
* legacy PM register sleep support.
|
||
|
|
*/
|
||
|
|
if (acpi_gbl_reduced_hardware) {
|
||
|
|
status = sleep_functions->extended_function(sleep_state);
|
||
|
|
} else {
|
||
|
|
/* Legacy sleep */
|
||
|
|
|
||
|
|
status = sleep_functions->legacy_function(sleep_state);
|
||
|
|
}
|
||
|
|
|
||
|
|
return (status);
|
||
|
|
|
||
|
|
#else
|
||
|
|
/*
|
||
|
|
* For the case where reduced-hardware-only code is being generated,
|
||
|
|
* we know that only the extended sleep registers are available
|
||
|
|
*/
|
||
|
|
status = sleep_functions->extended_function(sleep_state);
|
||
|
|
return (status);
|
||
|
|
|
||
|
|
#endif /* !ACPI_REDUCED_HARDWARE */
|
||
|
|
}
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_enter_sleep_state_prep
|
||
|
|
*
|
||
|
|
* PARAMETERS: sleep_state - Which sleep state to enter
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Prepare to enter a system sleep state.
|
||
|
|
* This function must execute with interrupts enabled.
|
||
|
|
* We break sleeping into 2 stages so that OSPM can handle
|
||
|
|
* various OS-specific tasks between the two steps.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
|
||
|
|
acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
struct acpi_object_list arg_list;
|
||
|
|
union acpi_object arg;
|
||
|
|
u32 sst_value;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep);
|
||
|
|
|
||
|
|
status = acpi_get_sleep_type_data(sleep_state,
|
||
|
|
&acpi_gbl_sleep_type_a,
|
||
|
|
&acpi_gbl_sleep_type_b);
|
||
|
|
if (ACPI_FAILURE(status)) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Execute the _PTS method (Prepare To Sleep) */
|
||
|
|
|
||
|
|
arg_list.count = 1;
|
||
|
|
arg_list.pointer = &arg;
|
||
|
|
arg.type = ACPI_TYPE_INTEGER;
|
||
|
|
arg.integer.value = sleep_state;
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_evaluate_object(NULL, METHOD_PATHNAME__PTS, &arg_list, NULL);
|
||
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Setup the argument to the _SST method (System STatus) */
|
||
|
|
|
||
|
|
switch (sleep_state) {
|
||
|
|
case ACPI_STATE_S0:
|
||
|
|
|
||
|
|
sst_value = ACPI_SST_WORKING;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_STATE_S1:
|
||
|
|
case ACPI_STATE_S2:
|
||
|
|
case ACPI_STATE_S3:
|
||
|
|
|
||
|
|
sst_value = ACPI_SST_SLEEPING;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case ACPI_STATE_S4:
|
||
|
|
|
||
|
|
sst_value = ACPI_SST_SLEEP_CONTEXT;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
|
||
|
|
sst_value = ACPI_SST_INDICATOR_OFF; /* Default is off */
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Set the system indicators to show the desired sleep state.
|
||
|
|
* _SST is an optional method (return no error if not found)
|
||
|
|
*/
|
||
|
|
acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, sst_value);
|
||
|
|
return_ACPI_STATUS(AE_OK);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep)
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_enter_sleep_state
|
||
|
|
*
|
||
|
|
* PARAMETERS: sleep_state - Which sleep state to enter
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Enter a system sleep state
|
||
|
|
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
acpi_status acpi_enter_sleep_state(u8 sleep_state)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(acpi_enter_sleep_state);
|
||
|
|
|
||
|
|
if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) ||
|
||
|
|
(acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) {
|
||
|
|
ACPI_ERROR((AE_INFO, "Sleep values out of range: A=0x%X B=0x%X",
|
||
|
|
acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b));
|
||
|
|
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
status = acpi_hw_sleep_dispatch(sleep_state, ACPI_SLEEP_FUNCTION_ID);
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state)
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_leave_sleep_state_prep
|
||
|
|
*
|
||
|
|
* PARAMETERS: sleep_state - Which sleep state we are exiting
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
|
||
|
|
* sleep. Called with interrupts DISABLED.
|
||
|
|
* We break wake/resume into 2 stages so that OSPM can handle
|
||
|
|
* various OS-specific tasks between the two steps.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep);
|
||
|
|
|
||
|
|
status =
|
||
|
|
acpi_hw_sleep_dispatch(sleep_state, ACPI_WAKE_PREP_FUNCTION_ID);
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state_prep)
|
||
|
|
|
||
|
|
/*******************************************************************************
|
||
|
|
*
|
||
|
|
* FUNCTION: acpi_leave_sleep_state
|
||
|
|
*
|
||
|
|
* PARAMETERS: sleep_state - Which sleep state we are exiting
|
||
|
|
*
|
||
|
|
* RETURN: Status
|
||
|
|
*
|
||
|
|
* DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
|
||
|
|
* Called with interrupts ENABLED.
|
||
|
|
*
|
||
|
|
******************************************************************************/
|
||
|
|
acpi_status acpi_leave_sleep_state(u8 sleep_state)
|
||
|
|
{
|
||
|
|
acpi_status status;
|
||
|
|
|
||
|
|
ACPI_FUNCTION_TRACE(acpi_leave_sleep_state);
|
||
|
|
|
||
|
|
status = acpi_hw_sleep_dispatch(sleep_state, ACPI_WAKE_FUNCTION_ID);
|
||
|
|
return_ACPI_STATUS(status);
|
||
|
|
}
|
||
|
|
|
||
|
|
ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state)
|