2008-12-30 03:04:48 +00:00
|
|
|
/******************************************************************************
|
|
|
|
*
|
|
|
|
* Module Name: hwxface - Public ACPICA hardware interfaces
|
|
|
|
*
|
|
|
|
*****************************************************************************/
|
|
|
|
|
|
|
|
/*
|
2017-02-08 03:00:08 +00:00
|
|
|
* Copyright (C) 2000 - 2017, Intel Corp.
|
2008-12-30 03:04:48 +00:00
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
2013-10-29 01:29:51 +00:00
|
|
|
#define EXPORT_ACPI_INTERFACES
|
|
|
|
|
2008-12-30 03:04:48 +00:00
|
|
|
#include <acpi/acpi.h>
|
2009-01-09 05:30:03 +00:00
|
|
|
#include "accommon.h"
|
|
|
|
#include "acnamesp.h"
|
2008-12-30 03:04:48 +00:00
|
|
|
|
|
|
|
#define _COMPONENT ACPI_HARDWARE
|
|
|
|
ACPI_MODULE_NAME("hwxface")
|
|
|
|
|
2008-12-30 03:11:57 +00:00
|
|
|
/******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_reset
|
|
|
|
*
|
|
|
|
* PARAMETERS: None
|
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Set reset register in memory or IO space. Note: Does not
|
|
|
|
* support reset register in PCI config space, this must be
|
|
|
|
* handled separately.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
acpi_status acpi_reset(void)
|
|
|
|
{
|
|
|
|
struct acpi_generic_address *reset_reg;
|
|
|
|
acpi_status status;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_reset);
|
|
|
|
|
|
|
|
reset_reg = &acpi_gbl_FADT.reset_register;
|
|
|
|
|
|
|
|
/* Check if the reset register is supported */
|
|
|
|
|
2012-04-20 18:19:35 +00:00
|
|
|
if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) ||
|
|
|
|
!reset_reg->address) {
|
2008-12-30 03:11:57 +00:00
|
|
|
return_ACPI_STATUS(AE_NOT_EXIST);
|
|
|
|
}
|
|
|
|
|
2009-08-13 05:42:19 +00:00
|
|
|
if (reset_reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
|
|
|
|
/*
|
2012-12-19 05:36:49 +00:00
|
|
|
* For I/O space, write directly to the OSL. This bypasses the port
|
|
|
|
* validation mechanism, which may block a valid write to the reset
|
|
|
|
* register.
|
2013-10-29 01:29:45 +00:00
|
|
|
*
|
|
|
|
* NOTE:
|
|
|
|
* The ACPI spec requires the reset register width to be 8, so we
|
|
|
|
* hardcode it here and ignore the FADT value. This maintains
|
|
|
|
* compatibility with other ACPI implementations that have allowed
|
|
|
|
* BIOS code with bad register width values to go unnoticed.
|
2009-08-13 05:42:19 +00:00
|
|
|
*/
|
2016-05-05 04:57:53 +00:00
|
|
|
status = acpi_os_write_port((acpi_io_address)reset_reg->address,
|
|
|
|
acpi_gbl_FADT.reset_value,
|
|
|
|
ACPI_RESET_REGISTER_WIDTH);
|
2009-08-13 05:42:19 +00:00
|
|
|
} else {
|
|
|
|
/* Write the reset value to the reset register */
|
|
|
|
|
|
|
|
status = acpi_hw_write(acpi_gbl_FADT.reset_value, reset_reg);
|
|
|
|
}
|
2008-12-30 03:11:57 +00:00
|
|
|
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_reset)
|
|
|
|
|
2008-12-30 03:04:48 +00:00
|
|
|
/******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_read
|
|
|
|
*
|
2012-07-12 01:40:10 +00:00
|
|
|
* PARAMETERS: value - Where the value is returned
|
|
|
|
* reg - GAS register structure
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Read from either memory or IO space.
|
|
|
|
*
|
2009-06-24 01:44:06 +00:00
|
|
|
* LIMITATIONS: <These limitations also apply to acpi_write>
|
|
|
|
* bit_width must be exactly 8, 16, 32, or 64.
|
2012-07-12 01:40:10 +00:00
|
|
|
* space_ID must be system_memory or system_IO.
|
2009-06-24 01:44:06 +00:00
|
|
|
* bit_offset and access_width are currently ignored, as there has
|
|
|
|
* not been a need to implement these.
|
|
|
|
*
|
2008-12-30 03:04:48 +00:00
|
|
|
******************************************************************************/
|
2009-06-24 01:44:06 +00:00
|
|
|
acpi_status acpi_read(u64 *return_value, struct acpi_generic_address *reg)
|
2008-12-30 03:04:48 +00:00
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_NAME(acpi_read);
|
|
|
|
|
2017-09-20 02:00:11 +00:00
|
|
|
status = acpi_hw_read(return_value, reg);
|
|
|
|
return (status);
|
2008-12-30 03:04:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_read)
|
|
|
|
|
|
|
|
/******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_write
|
|
|
|
*
|
2012-07-12 01:40:10 +00:00
|
|
|
* PARAMETERS: value - Value to be written
|
|
|
|
* reg - GAS register structure
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Write to either memory or IO space.
|
|
|
|
*
|
|
|
|
******************************************************************************/
|
2009-06-24 01:44:06 +00:00
|
|
|
acpi_status acpi_write(u64 value, struct acpi_generic_address *reg)
|
2008-12-30 03:04:48 +00:00
|
|
|
{
|
|
|
|
acpi_status status;
|
|
|
|
|
|
|
|
ACPI_FUNCTION_NAME(acpi_write);
|
|
|
|
|
2017-09-20 02:00:11 +00:00
|
|
|
status = acpi_hw_write(value, reg);
|
2008-12-30 03:04:48 +00:00
|
|
|
return (status);
|
|
|
|
}
|
|
|
|
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_write)
|
|
|
|
|
2012-02-14 10:14:27 +00:00
|
|
|
#if (!ACPI_REDUCED_HARDWARE)
|
2008-12-30 03:04:48 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
2009-02-23 07:02:07 +00:00
|
|
|
* FUNCTION: acpi_read_bit_register
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
2009-02-18 07:10:07 +00:00
|
|
|
* PARAMETERS: register_id - ID of ACPI Bit Register to access
|
|
|
|
* return_value - Value that was read from the register,
|
|
|
|
* normalized to bit position zero.
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
2009-02-18 07:10:07 +00:00
|
|
|
* RETURN: Status and the value read from the specified Register. Value
|
2008-12-30 03:04:48 +00:00
|
|
|
* returned is normalized to bit0 (is shifted all the way right)
|
|
|
|
*
|
|
|
|
* DESCRIPTION: ACPI bit_register read function. Does not acquire the HW lock.
|
|
|
|
*
|
2009-02-18 07:10:07 +00:00
|
|
|
* SUPPORTS: Bit fields in PM1 Status, PM1 Enable, PM1 Control, and
|
|
|
|
* PM2 Control.
|
|
|
|
*
|
|
|
|
* Note: The hardware lock is not required when reading the ACPI bit registers
|
|
|
|
* since almost all of them are single bit and it does not matter that
|
|
|
|
* the parent hardware register can be split across two physical
|
|
|
|
* registers. The only multi-bit field is SLP_TYP in the PM1 control
|
|
|
|
* register, but this field does not cross an 8-bit boundary (nor does
|
|
|
|
* it make much sense to actually read this field.)
|
|
|
|
*
|
2008-12-30 03:04:48 +00:00
|
|
|
******************************************************************************/
|
2009-02-23 07:02:07 +00:00
|
|
|
acpi_status acpi_read_bit_register(u32 register_id, u32 *return_value)
|
2008-12-30 03:04:48 +00:00
|
|
|
{
|
|
|
|
struct acpi_bit_register_info *bit_reg_info;
|
2009-02-18 08:01:04 +00:00
|
|
|
u32 register_value;
|
|
|
|
u32 value;
|
2008-12-30 03:04:48 +00:00
|
|
|
acpi_status status;
|
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
ACPI_FUNCTION_TRACE_U32(acpi_read_bit_register, register_id);
|
2008-12-30 03:04:48 +00:00
|
|
|
|
|
|
|
/* Get the info structure corresponding to the requested ACPI Register */
|
|
|
|
|
|
|
|
bit_reg_info = acpi_hw_get_bit_register_info(register_id);
|
|
|
|
if (!bit_reg_info) {
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
}
|
|
|
|
|
2009-02-18 07:10:07 +00:00
|
|
|
/* Read the entire parent register */
|
2008-12-30 03:04:48 +00:00
|
|
|
|
|
|
|
status = acpi_hw_register_read(bit_reg_info->parent_register,
|
|
|
|
®ister_value);
|
2009-02-18 08:01:04 +00:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
/* Normalize the value that was read, mask off other bits */
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
value = ((register_value & bit_reg_info->access_bit_mask)
|
|
|
|
>> bit_reg_info->bit_position);
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_IO,
|
|
|
|
"BitReg %X, ParentReg %X, Actual %8.8X, ReturnValue %8.8X\n",
|
|
|
|
register_id, bit_reg_info->parent_register,
|
|
|
|
register_value, value));
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
*return_value = value;
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
2008-12-30 03:04:48 +00:00
|
|
|
}
|
|
|
|
|
2009-02-23 07:02:07 +00:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_read_bit_register)
|
2008-12-30 03:04:48 +00:00
|
|
|
|
|
|
|
/*******************************************************************************
|
|
|
|
*
|
2009-02-23 07:02:07 +00:00
|
|
|
* FUNCTION: acpi_write_bit_register
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
2009-02-18 07:10:07 +00:00
|
|
|
* PARAMETERS: register_id - ID of ACPI Bit Register to access
|
2012-12-19 05:36:49 +00:00
|
|
|
* value - Value to write to the register, in bit
|
2011-11-29 04:31:00 +00:00
|
|
|
* position zero. The bit is automatically
|
2009-02-18 07:10:07 +00:00
|
|
|
* shifted to the correct position.
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
|
|
|
* RETURN: Status
|
|
|
|
*
|
2009-02-18 07:10:07 +00:00
|
|
|
* DESCRIPTION: ACPI Bit Register write function. Acquires the hardware lock
|
|
|
|
* since most operations require a read/modify/write sequence.
|
|
|
|
*
|
|
|
|
* SUPPORTS: Bit fields in PM1 Status, PM1 Enable, PM1 Control, and
|
|
|
|
* PM2 Control.
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
2009-02-18 08:01:04 +00:00
|
|
|
* Note that at this level, the fact that there may be actually two
|
|
|
|
* hardware registers (A and B - and B may not exist) is abstracted.
|
|
|
|
*
|
2008-12-30 03:04:48 +00:00
|
|
|
******************************************************************************/
|
2009-02-23 07:02:07 +00:00
|
|
|
acpi_status acpi_write_bit_register(u32 register_id, u32 value)
|
2008-12-30 03:04:48 +00:00
|
|
|
{
|
|
|
|
struct acpi_bit_register_info *bit_reg_info;
|
|
|
|
acpi_cpu_flags lock_flags;
|
2009-02-18 08:01:04 +00:00
|
|
|
u32 register_value;
|
|
|
|
acpi_status status = AE_OK;
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-23 07:02:07 +00:00
|
|
|
ACPI_FUNCTION_TRACE_U32(acpi_write_bit_register, register_id);
|
2008-12-30 03:04:48 +00:00
|
|
|
|
|
|
|
/* Get the info structure corresponding to the requested ACPI Register */
|
|
|
|
|
|
|
|
bit_reg_info = acpi_hw_get_bit_register_info(register_id);
|
|
|
|
if (!bit_reg_info) {
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
}
|
|
|
|
|
|
|
|
lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
|
|
|
|
|
|
|
|
/*
|
2009-02-18 08:01:04 +00:00
|
|
|
* At this point, we know that the parent register is one of the
|
|
|
|
* following: PM1 Status, PM1 Enable, PM1 Control, or PM2 Control
|
2008-12-30 03:04:48 +00:00
|
|
|
*/
|
2009-02-18 08:01:04 +00:00
|
|
|
if (bit_reg_info->parent_register != ACPI_REGISTER_PM1_STATUS) {
|
2008-12-30 03:04:48 +00:00
|
|
|
/*
|
2009-02-18 08:01:04 +00:00
|
|
|
* 1) Case for PM1 Enable, PM1 Control, and PM2 Control
|
|
|
|
*
|
|
|
|
* Perform a register read to preserve the bits that we are not
|
|
|
|
* interested in
|
2008-12-30 03:04:48 +00:00
|
|
|
*/
|
2009-02-18 08:01:04 +00:00
|
|
|
status = acpi_hw_register_read(bit_reg_info->parent_register,
|
2008-12-30 03:04:48 +00:00
|
|
|
®ister_value);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
goto unlock_and_exit;
|
|
|
|
}
|
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
/*
|
|
|
|
* Insert the input bit into the value that was just read
|
|
|
|
* and write the register
|
|
|
|
*/
|
2008-12-30 03:04:48 +00:00
|
|
|
ACPI_REGISTER_INSERT_VALUE(register_value,
|
|
|
|
bit_reg_info->bit_position,
|
|
|
|
bit_reg_info->access_bit_mask,
|
|
|
|
value);
|
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
status = acpi_hw_register_write(bit_reg_info->parent_register,
|
|
|
|
register_value);
|
|
|
|
} else {
|
|
|
|
/*
|
|
|
|
* 2) Case for PM1 Status
|
|
|
|
*
|
|
|
|
* The Status register is different from the rest. Clear an event
|
|
|
|
* by writing 1, writing 0 has no effect. So, the only relevant
|
|
|
|
* information is the single bit we're interested in, all others
|
|
|
|
* should be written as 0 so they will be left unchanged.
|
|
|
|
*/
|
|
|
|
register_value = ACPI_REGISTER_PREPARE_BITS(value,
|
|
|
|
bit_reg_info->
|
|
|
|
bit_position,
|
|
|
|
bit_reg_info->
|
|
|
|
access_bit_mask);
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
/* No need to write the register if value is all zeros */
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
if (register_value) {
|
|
|
|
status =
|
|
|
|
acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
|
|
|
|
register_value);
|
|
|
|
}
|
2008-12-30 03:04:48 +00:00
|
|
|
}
|
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_IO,
|
|
|
|
"BitReg %X, ParentReg %X, Value %8.8X, Actual %8.8X\n",
|
|
|
|
register_id, bit_reg_info->parent_register, value,
|
|
|
|
register_value));
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
unlock_and_exit:
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2009-02-18 08:01:04 +00:00
|
|
|
acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
|
2008-12-30 03:04:48 +00:00
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
2009-02-23 07:02:07 +00:00
|
|
|
ACPI_EXPORT_SYMBOL(acpi_write_bit_register)
|
2012-02-14 10:14:27 +00:00
|
|
|
#endif /* !ACPI_REDUCED_HARDWARE */
|
2008-12-30 03:04:48 +00:00
|
|
|
/*******************************************************************************
|
|
|
|
*
|
|
|
|
* FUNCTION: acpi_get_sleep_type_data
|
|
|
|
*
|
|
|
|
* PARAMETERS: sleep_state - Numeric sleep state
|
|
|
|
* *sleep_type_a - Where SLP_TYPa is returned
|
|
|
|
* *sleep_type_b - Where SLP_TYPb is returned
|
|
|
|
*
|
2013-01-25 05:41:00 +00:00
|
|
|
* RETURN: Status
|
|
|
|
*
|
|
|
|
* DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested
|
|
|
|
* sleep state via the appropriate \_Sx object.
|
|
|
|
*
|
|
|
|
* The sleep state package returned from the corresponding \_Sx_ object
|
|
|
|
* must contain at least one integer.
|
|
|
|
*
|
|
|
|
* March 2005:
|
|
|
|
* Added support for a package that contains two integers. This
|
|
|
|
* goes against the ACPI specification which defines this object as a
|
|
|
|
* package with one encoded DWORD integer. However, existing practice
|
|
|
|
* by many BIOS vendors is to return a package with 2 or more integer
|
|
|
|
* elements, at least one per sleep type (A/B).
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
2013-01-25 05:41:00 +00:00
|
|
|
* January 2013:
|
|
|
|
* Therefore, we must be prepared to accept a package with either a
|
|
|
|
* single integer or multiple integers.
|
|
|
|
*
|
|
|
|
* The single integer DWORD format is as follows:
|
|
|
|
* BYTE 0 - Value for the PM1A SLP_TYP register
|
|
|
|
* BYTE 1 - Value for the PM1B SLP_TYP register
|
|
|
|
* BYTE 2-3 - Reserved
|
|
|
|
*
|
|
|
|
* The dual integer format is as follows:
|
|
|
|
* Integer 0 - Value for the PM1A SLP_TYP register
|
|
|
|
* Integer 1 - Value for the PM1A SLP_TYP register
|
2008-12-30 03:04:48 +00:00
|
|
|
*
|
|
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
|
|
acpi_get_sleep_type_data(u8 sleep_state, u8 *sleep_type_a, u8 *sleep_type_b)
|
|
|
|
{
|
2013-01-25 05:41:00 +00:00
|
|
|
acpi_status status;
|
2008-12-30 03:04:48 +00:00
|
|
|
struct acpi_evaluate_info *info;
|
2013-01-25 05:41:00 +00:00
|
|
|
union acpi_operand_object **elements;
|
2008-12-30 03:04:48 +00:00
|
|
|
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_get_sleep_type_data);
|
|
|
|
|
|
|
|
/* Validate parameters */
|
|
|
|
|
|
|
|
if ((sleep_state > ACPI_S_STATES_MAX) || !sleep_type_a || !sleep_type_b) {
|
|
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Allocate the evaluation information block */
|
|
|
|
|
|
|
|
info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
|
|
|
|
if (!info) {
|
|
|
|
return_ACPI_STATUS(AE_NO_MEMORY);
|
|
|
|
}
|
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
/*
|
|
|
|
* Evaluate the \_Sx namespace object containing the register values
|
|
|
|
* for this state
|
|
|
|
*/
|
2016-03-24 01:40:40 +00:00
|
|
|
info->relative_pathname = acpi_gbl_sleep_state_names[sleep_state];
|
2015-12-29 05:52:41 +00:00
|
|
|
|
2008-12-30 03:04:48 +00:00
|
|
|
status = acpi_ns_evaluate(info);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
2015-12-29 05:52:41 +00:00
|
|
|
if (status == AE_NOT_FOUND) {
|
|
|
|
|
|
|
|
/* The _Sx states are optional, ignore NOT_FOUND */
|
|
|
|
|
|
|
|
goto final_cleanup;
|
|
|
|
}
|
|
|
|
|
|
|
|
goto warning_cleanup;
|
2008-12-30 03:04:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Must have a return object */
|
|
|
|
|
|
|
|
if (!info->return_object) {
|
|
|
|
ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]",
|
2013-05-30 02:00:01 +00:00
|
|
|
info->relative_pathname));
|
2013-01-25 05:41:00 +00:00
|
|
|
status = AE_AML_NO_RETURN_VALUE;
|
2015-12-29 05:52:41 +00:00
|
|
|
goto warning_cleanup;
|
2008-12-30 03:04:48 +00:00
|
|
|
}
|
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
/* Return object must be of type Package */
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
if (info->return_object->common.type != ACPI_TYPE_PACKAGE) {
|
2008-12-30 03:04:48 +00:00
|
|
|
ACPI_ERROR((AE_INFO,
|
|
|
|
"Sleep State return object is not a Package"));
|
|
|
|
status = AE_AML_OPERAND_TYPE;
|
2015-12-29 05:52:41 +00:00
|
|
|
goto return_value_cleanup;
|
2008-12-30 03:04:48 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2013-01-25 05:41:00 +00:00
|
|
|
* Any warnings about the package length or the object types have
|
|
|
|
* already been issued by the predefined name module -- there is no
|
|
|
|
* need to repeat them here.
|
2008-12-30 03:04:48 +00:00
|
|
|
*/
|
2013-01-25 05:41:00 +00:00
|
|
|
elements = info->return_object->package.elements;
|
|
|
|
switch (info->return_object->package.count) {
|
|
|
|
case 0:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
status = AE_AML_PACKAGE_LIMIT;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case 1:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
if (elements[0]->common.type != ACPI_TYPE_INTEGER) {
|
|
|
|
status = AE_AML_OPERAND_TYPE;
|
|
|
|
break;
|
|
|
|
}
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
/* A valid _Sx_ package with one integer */
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
*sleep_type_a = (u8)elements[0]->integer.value;
|
|
|
|
*sleep_type_b = (u8)(elements[0]->integer.value >> 8);
|
|
|
|
break;
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
case 2:
|
|
|
|
default:
|
2013-06-08 00:58:14 +00:00
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
if ((elements[0]->common.type != ACPI_TYPE_INTEGER) ||
|
|
|
|
(elements[1]->common.type != ACPI_TYPE_INTEGER)) {
|
|
|
|
status = AE_AML_OPERAND_TYPE;
|
|
|
|
break;
|
|
|
|
}
|
2008-12-30 03:04:48 +00:00
|
|
|
|
2013-01-25 05:41:00 +00:00
|
|
|
/* A valid _Sx_ package with two integers */
|
|
|
|
|
|
|
|
*sleep_type_a = (u8)elements[0]->integer.value;
|
|
|
|
*sleep_type_b = (u8)elements[1]->integer.value;
|
|
|
|
break;
|
2008-12-30 03:04:48 +00:00
|
|
|
}
|
|
|
|
|
2015-12-29 05:52:41 +00:00
|
|
|
return_value_cleanup:
|
2008-12-30 03:04:48 +00:00
|
|
|
acpi_ut_remove_reference(info->return_object);
|
|
|
|
|
2015-12-29 05:52:41 +00:00
|
|
|
warning_cleanup:
|
2013-01-25 05:41:00 +00:00
|
|
|
if (ACPI_FAILURE(status)) {
|
|
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
|
|
"While evaluating Sleep State [%s]",
|
2013-05-30 02:00:01 +00:00
|
|
|
info->relative_pathname));
|
2013-01-25 05:41:00 +00:00
|
|
|
}
|
|
|
|
|
2015-12-29 05:52:41 +00:00
|
|
|
final_cleanup:
|
2008-12-30 03:04:48 +00:00
|
|
|
ACPI_FREE(info);
|
|
|
|
return_ACPI_STATUS(status);
|
|
|
|
}
|
|
|
|
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_sleep_type_data)
|