ACPICA: Move all public H/W interfaces to new hwxface
Move public interfaces from hwregs.c to new file, hwxface.c - similar to the structure of the other ACPICA components. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
parent
ecfbbc7b46
commit
7db5d82d02
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@ -2,7 +2,7 @@
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# Makefile for all Linux ACPI interpreter subdirectories
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#
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obj-y := hwacpi.o hwgpe.o hwregs.o hwsleep.o
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obj-y := hwacpi.o hwgpe.o hwregs.o hwsleep.o hwxface.o
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obj-$(ACPI_FUTURE_USAGE) += hwtimer.o
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@ -56,7 +56,7 @@ ACPI_MODULE_NAME("hwregs")
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*
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* PARAMETERS: None
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*
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* RETURN: None
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* RETURN: Status
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*
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* DESCRIPTION: Clears all fixed and general purpose status bits
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* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
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@ -100,125 +100,6 @@ acpi_status acpi_hw_clear_acpi_status(void)
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return_ACPI_STATUS(status);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_sleep_type_data
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*
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* PARAMETERS: sleep_state - Numeric sleep state
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* *sleep_type_a - Where SLP_TYPa is returned
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* *sleep_type_b - Where SLP_TYPb is returned
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*
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* RETURN: Status - ACPI status
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*
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* DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested sleep
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* state.
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*
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******************************************************************************/
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acpi_status
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acpi_get_sleep_type_data(u8 sleep_state, u8 * sleep_type_a, u8 * sleep_type_b)
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{
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acpi_status status = AE_OK;
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struct acpi_evaluate_info *info;
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ACPI_FUNCTION_TRACE(acpi_get_sleep_type_data);
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/* Validate parameters */
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if ((sleep_state > ACPI_S_STATES_MAX) || !sleep_type_a || !sleep_type_b) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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/* Allocate the evaluation information block */
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info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
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if (!info) {
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return_ACPI_STATUS(AE_NO_MEMORY);
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}
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info->pathname =
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ACPI_CAST_PTR(char, acpi_gbl_sleep_state_names[sleep_state]);
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/* Evaluate the namespace object containing the values for this state */
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status = acpi_ns_evaluate(info);
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if (ACPI_FAILURE(status)) {
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"%s while evaluating SleepState [%s]\n",
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acpi_format_exception(status),
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info->pathname));
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goto cleanup;
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}
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/* Must have a return object */
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if (!info->return_object) {
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ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]",
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info->pathname));
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status = AE_NOT_EXIST;
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}
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/* It must be of type Package */
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else if (ACPI_GET_OBJECT_TYPE(info->return_object) != ACPI_TYPE_PACKAGE) {
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ACPI_ERROR((AE_INFO,
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"Sleep State return object is not a Package"));
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status = AE_AML_OPERAND_TYPE;
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}
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/*
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* The package must have at least two elements. NOTE (March 2005): This
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* goes against the current ACPI spec which defines this object as a
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* package with one encoded DWORD element. However, existing practice
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* by BIOS vendors seems to be to have 2 or more elements, at least
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* one per sleep type (A/B).
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*/
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else if (info->return_object->package.count < 2) {
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ACPI_ERROR((AE_INFO,
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"Sleep State return package does not have at least two elements"));
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status = AE_AML_NO_OPERAND;
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}
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/* The first two elements must both be of type Integer */
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else if ((ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[0])
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!= ACPI_TYPE_INTEGER) ||
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(ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[1])
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!= ACPI_TYPE_INTEGER)) {
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ACPI_ERROR((AE_INFO,
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"Sleep State return package elements are not both Integers (%s, %s)",
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acpi_ut_get_object_type_name(info->return_object->
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package.elements[0]),
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acpi_ut_get_object_type_name(info->return_object->
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package.elements[1])));
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status = AE_AML_OPERAND_TYPE;
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} else {
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/* Valid _Sx_ package size, type, and value */
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*sleep_type_a = (u8)
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(info->return_object->package.elements[0])->integer.value;
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*sleep_type_b = (u8)
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(info->return_object->package.elements[1])->integer.value;
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}
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if (ACPI_FAILURE(status)) {
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ACPI_EXCEPTION((AE_INFO, status,
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"While evaluating SleepState [%s], bad Sleep object %p type %s",
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info->pathname, info->return_object,
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acpi_ut_get_object_type_name(info->
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return_object)));
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}
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acpi_ut_remove_reference(info->return_object);
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cleanup:
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ACPI_FREE(info);
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_sleep_type_data)
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/*******************************************************************************
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*
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* FUNCTION: acpi_hw_get_register_bit_mask
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@ -230,6 +111,7 @@ ACPI_EXPORT_SYMBOL(acpi_get_sleep_type_data)
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* DESCRIPTION: Map register_id into a register bitmask.
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*
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******************************************************************************/
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struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id)
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{
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ACPI_FUNCTION_ENTRY();
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@ -243,223 +125,6 @@ struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id)
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return (&acpi_gbl_bit_register_info[register_id]);
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}
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ACPI_EXPORT_SYMBOL(acpi_get_register_unlocked)
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/*******************************************************************************
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*
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* FUNCTION: acpi_get_register
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*
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* PARAMETERS: register_id - ID of ACPI bit_register to access
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* return_value - Value that was read from the register
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*
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* RETURN: Status and the value read from specified Register. Value
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* returned is normalized to bit0 (is shifted all the way right)
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*
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* DESCRIPTION: ACPI bit_register read function.
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*
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******************************************************************************/
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acpi_status acpi_get_register_unlocked(u32 register_id, u32 * return_value)
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{
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u32 register_value = 0;
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struct acpi_bit_register_info *bit_reg_info;
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acpi_status status;
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ACPI_FUNCTION_TRACE(acpi_get_register);
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/* Get the info structure corresponding to the requested ACPI Register */
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bit_reg_info = acpi_hw_get_bit_register_info(register_id);
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if (!bit_reg_info) {
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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/* Read from the register */
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status = acpi_hw_register_read(bit_reg_info->parent_register,
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®ister_value);
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if (ACPI_SUCCESS(status)) {
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/* Normalize the value that was read */
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register_value =
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((register_value & bit_reg_info->access_bit_mask)
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>> bit_reg_info->bit_position);
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*return_value = register_value;
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ACPI_DEBUG_PRINT((ACPI_DB_IO, "Read value %8.8X register %X\n",
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register_value,
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bit_reg_info->parent_register));
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}
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return_ACPI_STATUS(status);
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}
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acpi_status acpi_get_register(u32 register_id, u32 * return_value)
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{
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acpi_status status;
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acpi_cpu_flags flags;
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flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
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status = acpi_get_register_unlocked(register_id, return_value);
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acpi_os_release_lock(acpi_gbl_hardware_lock, flags);
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return status;
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}
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ACPI_EXPORT_SYMBOL(acpi_get_register)
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/*******************************************************************************
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*
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* FUNCTION: acpi_set_register
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*
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* PARAMETERS: register_id - ID of ACPI bit_register to access
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* Value - (only used on write) value to write to the
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* Register, NOT pre-normalized to the bit pos
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*
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* RETURN: Status
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*
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* DESCRIPTION: ACPI Bit Register write function.
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*
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******************************************************************************/
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acpi_status acpi_set_register(u32 register_id, u32 value)
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{
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u32 register_value = 0;
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struct acpi_bit_register_info *bit_reg_info;
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acpi_status status;
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acpi_cpu_flags lock_flags;
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ACPI_FUNCTION_TRACE_U32(acpi_set_register, register_id);
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/* Get the info structure corresponding to the requested ACPI Register */
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bit_reg_info = acpi_hw_get_bit_register_info(register_id);
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if (!bit_reg_info) {
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ACPI_ERROR((AE_INFO, "Bad ACPI HW RegisterId: %X",
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register_id));
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return_ACPI_STATUS(AE_BAD_PARAMETER);
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}
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lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
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/* Always do a register read first so we can insert the new bits */
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status = acpi_hw_register_read(bit_reg_info->parent_register,
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®ister_value);
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if (ACPI_FAILURE(status)) {
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goto unlock_and_exit;
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}
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/*
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* Decode the Register ID
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* Register ID = [Register block ID] | [bit ID]
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*
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* Check bit ID to fine locate Register offset.
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* Check Mask to determine Register offset, and then read-write.
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*/
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switch (bit_reg_info->parent_register) {
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case ACPI_REGISTER_PM1_STATUS:
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/*
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* Status Registers are different from the rest. Clear by
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* writing 1, and writing 0 has no effect. So, the only relevant
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* information is the single bit we're interested in, all others should
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* be written as 0 so they will be left unchanged.
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*/
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value = ACPI_REGISTER_PREPARE_BITS(value,
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bit_reg_info->bit_position,
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bit_reg_info->
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access_bit_mask);
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if (value) {
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status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
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(u16) value);
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register_value = 0;
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}
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break;
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case ACPI_REGISTER_PM1_ENABLE:
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ACPI_REGISTER_INSERT_VALUE(register_value,
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bit_reg_info->bit_position,
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bit_reg_info->access_bit_mask,
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value);
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status = acpi_hw_register_write(ACPI_REGISTER_PM1_ENABLE,
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(u16) register_value);
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break;
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case ACPI_REGISTER_PM1_CONTROL:
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/*
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* Write the PM1 Control register.
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* Note that at this level, the fact that there are actually TWO
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* registers (A and B - and B may not exist) is abstracted.
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*/
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ACPI_DEBUG_PRINT((ACPI_DB_IO, "PM1 control: Read %X\n",
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register_value));
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ACPI_REGISTER_INSERT_VALUE(register_value,
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bit_reg_info->bit_position,
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bit_reg_info->access_bit_mask,
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value);
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status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
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(u16) register_value);
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break;
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case ACPI_REGISTER_PM2_CONTROL:
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status = acpi_hw_register_read(ACPI_REGISTER_PM2_CONTROL,
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®ister_value);
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if (ACPI_FAILURE(status)) {
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goto unlock_and_exit;
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}
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ACPI_DEBUG_PRINT((ACPI_DB_IO,
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"PM2 control: Read %X from %8.8X%8.8X\n",
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register_value,
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ACPI_FORMAT_UINT64(acpi_gbl_FADT.
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xpm2_control_block.
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address)));
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ACPI_REGISTER_INSERT_VALUE(register_value,
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bit_reg_info->bit_position,
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bit_reg_info->access_bit_mask,
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value);
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ACPI_DEBUG_PRINT((ACPI_DB_IO,
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"About to write %4.4X to %8.8X%8.8X\n",
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register_value,
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ACPI_FORMAT_UINT64(acpi_gbl_FADT.
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xpm2_control_block.
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address)));
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status = acpi_hw_register_write(ACPI_REGISTER_PM2_CONTROL,
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(u8) (register_value));
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break;
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default:
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break;
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}
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unlock_and_exit:
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acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
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/* Normalize the value that was read */
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ACPI_DEBUG_EXEC(register_value =
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((register_value & bit_reg_info->access_bit_mask) >>
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bit_reg_info->bit_position));
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ACPI_DEBUG_PRINT((ACPI_DB_IO,
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"Set bits: %8.8X actual %8.8X register %X\n", value,
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register_value, bit_reg_info->parent_register));
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return_ACPI_STATUS(status);
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}
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ACPI_EXPORT_SYMBOL(acpi_set_register)
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/******************************************************************************
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*
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* FUNCTION: acpi_hw_register_read
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@ -685,162 +350,3 @@ acpi_status acpi_hw_register_write(u32 register_id, u32 value)
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exit:
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return_ACPI_STATUS(status);
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}
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/******************************************************************************
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*
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* FUNCTION: acpi_read
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*
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* PARAMETERS: Value - Where the value is returned
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* Reg - GAS register structure
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*
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* RETURN: Status
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*
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* DESCRIPTION: Read from either memory or IO space.
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*
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******************************************************************************/
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acpi_status acpi_read(u32 *value, struct acpi_generic_address *reg)
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{
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u32 width;
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u64 address;
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acpi_status status;
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ACPI_FUNCTION_NAME(acpi_read);
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/*
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* Must have a valid pointer to a GAS structure, and
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* a non-zero address within. However, don't return an error
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* because the PM1A/B code must not fail if B isn't present.
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*/
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if (!reg) {
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return (AE_OK);
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}
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/* Get a local copy of the address. Handles possible alignment issues */
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ACPI_MOVE_64_TO_64(&address, ®->address);
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if (!address) {
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return (AE_OK);
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}
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/* Supported widths are 8/16/32 */
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width = reg->bit_width;
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if ((width != 8) && (width != 16) && (width != 32)) {
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return (AE_SUPPORT);
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}
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/* Initialize entire 32-bit return value to zero */
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*value = 0;
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/*
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* Two address spaces supported: Memory or IO.
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* PCI_Config is not supported here because the GAS struct is insufficient
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*/
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switch (reg->space_id) {
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case ACPI_ADR_SPACE_SYSTEM_MEMORY:
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status = acpi_os_read_memory((acpi_physical_address) address,
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value, width);
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break;
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case ACPI_ADR_SPACE_SYSTEM_IO:
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status =
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acpi_os_read_port((acpi_io_address) address, value, width);
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break;
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default:
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ACPI_ERROR((AE_INFO,
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"Unsupported address space: %X", reg->space_id));
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return (AE_BAD_PARAMETER);
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}
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ACPI_DEBUG_PRINT((ACPI_DB_IO,
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"Read: %8.8X width %2d from %8.8X%8.8X (%s)\n",
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*value, width, ACPI_FORMAT_UINT64(address),
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acpi_ut_get_region_name(reg->space_id)));
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return (status);
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}
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ACPI_EXPORT_SYMBOL(acpi_read)
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/******************************************************************************
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*
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* FUNCTION: acpi_write
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*
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* PARAMETERS: Value - To be written
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* Reg - GAS register structure
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*
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* RETURN: Status
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*
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* DESCRIPTION: Write to either memory or IO space.
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*
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******************************************************************************/
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acpi_status
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acpi_write(u32 value, struct acpi_generic_address *reg)
|
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{
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u32 width;
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u64 address;
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acpi_status status;
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ACPI_FUNCTION_NAME(acpi_write);
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/*
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* Must have a valid pointer to a GAS structure, and
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||||
* a non-zero address within. However, don't return an error
|
||||
* because the PM1A/B code must not fail if B isn't present.
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*/
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if (!reg) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/* Get a local copy of the address. Handles possible alignment issues */
|
||||
|
||||
ACPI_MOVE_64_TO_64(&address, ®->address);
|
||||
if (!address) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/* Supported widths are 8/16/32 */
|
||||
|
||||
width = reg->bit_width;
|
||||
if ((width != 8) && (width != 16) && (width != 32)) {
|
||||
return (AE_SUPPORT);
|
||||
}
|
||||
|
||||
/*
|
||||
* Two address spaces supported: Memory or IO.
|
||||
* PCI_Config is not supported here because the GAS struct is insufficient
|
||||
*/
|
||||
switch (reg->space_id) {
|
||||
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
||||
|
||||
status = acpi_os_write_memory((acpi_physical_address) address,
|
||||
value, width);
|
||||
break;
|
||||
|
||||
case ACPI_ADR_SPACE_SYSTEM_IO:
|
||||
|
||||
status = acpi_os_write_port((acpi_io_address) address, value,
|
||||
width);
|
||||
break;
|
||||
|
||||
default:
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Unsupported address space: %X", reg->space_id));
|
||||
return (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_IO,
|
||||
"Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n",
|
||||
value, width, ACPI_FORMAT_UINT64(address),
|
||||
acpi_ut_get_region_name(reg->space_id)));
|
||||
|
||||
return (status);
|
||||
}
|
||||
|
||||
ACPI_EXPORT_SYMBOL(acpi_write)
|
||||
|
|
|
@ -0,0 +1,555 @@
|
|||
|
||||
/******************************************************************************
|
||||
*
|
||||
* Module Name: hwxface - Public ACPICA hardware interfaces
|
||||
*
|
||||
*****************************************************************************/
|
||||
|
||||
/*
|
||||
* Copyright (C) 2000 - 2008, 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.
|
||||
*/
|
||||
|
||||
#include <acpi/acpi.h>
|
||||
#include <acpi/acnamesp.h>
|
||||
|
||||
#define _COMPONENT ACPI_HARDWARE
|
||||
ACPI_MODULE_NAME("hwxface")
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_read
|
||||
*
|
||||
* PARAMETERS: Value - Where the value is returned
|
||||
* Reg - GAS register structure
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Read from either memory or IO space.
|
||||
*
|
||||
******************************************************************************/
|
||||
acpi_status acpi_read(u32 *value, struct acpi_generic_address *reg)
|
||||
{
|
||||
u32 width;
|
||||
u64 address;
|
||||
acpi_status status;
|
||||
|
||||
ACPI_FUNCTION_NAME(acpi_read);
|
||||
|
||||
/*
|
||||
* Must have a valid pointer to a GAS structure, and
|
||||
* a non-zero address within. However, don't return an error
|
||||
* because the PM1A/B code must not fail if B isn't present.
|
||||
*/
|
||||
if (!reg) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/* Get a local copy of the address. Handles possible alignment issues */
|
||||
|
||||
ACPI_MOVE_64_TO_64(&address, ®->address);
|
||||
if (!address) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/* Supported widths are 8/16/32 */
|
||||
|
||||
width = reg->bit_width;
|
||||
if ((width != 8) && (width != 16) && (width != 32)) {
|
||||
return (AE_SUPPORT);
|
||||
}
|
||||
|
||||
/* Initialize entire 32-bit return value to zero */
|
||||
|
||||
*value = 0;
|
||||
|
||||
/*
|
||||
* Two address spaces supported: Memory or IO.
|
||||
* PCI_Config is not supported here because the GAS struct is insufficient
|
||||
*/
|
||||
switch (reg->space_id) {
|
||||
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
||||
|
||||
status = acpi_os_read_memory((acpi_physical_address) address,
|
||||
value, width);
|
||||
break;
|
||||
|
||||
case ACPI_ADR_SPACE_SYSTEM_IO:
|
||||
|
||||
status =
|
||||
acpi_os_read_port((acpi_io_address) address, value, width);
|
||||
break;
|
||||
|
||||
default:
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Unsupported address space: %X", reg->space_id));
|
||||
return (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_IO,
|
||||
"Read: %8.8X width %2d from %8.8X%8.8X (%s)\n",
|
||||
*value, width, ACPI_FORMAT_UINT64(address),
|
||||
acpi_ut_get_region_name(reg->space_id)));
|
||||
|
||||
return (status);
|
||||
}
|
||||
|
||||
ACPI_EXPORT_SYMBOL(acpi_read)
|
||||
|
||||
/******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_write
|
||||
*
|
||||
* PARAMETERS: Value - To be written
|
||||
* Reg - GAS register structure
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: Write to either memory or IO space.
|
||||
*
|
||||
******************************************************************************/
|
||||
acpi_status acpi_write(u32 value, struct acpi_generic_address *reg)
|
||||
{
|
||||
u32 width;
|
||||
u64 address;
|
||||
acpi_status status;
|
||||
|
||||
ACPI_FUNCTION_NAME(acpi_write);
|
||||
|
||||
/*
|
||||
* Must have a valid pointer to a GAS structure, and
|
||||
* a non-zero address within. However, don't return an error
|
||||
* because the PM1A/B code must not fail if B isn't present.
|
||||
*/
|
||||
if (!reg) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/* Get a local copy of the address. Handles possible alignment issues */
|
||||
|
||||
ACPI_MOVE_64_TO_64(&address, ®->address);
|
||||
if (!address) {
|
||||
return (AE_OK);
|
||||
}
|
||||
|
||||
/* Supported widths are 8/16/32 */
|
||||
|
||||
width = reg->bit_width;
|
||||
if ((width != 8) && (width != 16) && (width != 32)) {
|
||||
return (AE_SUPPORT);
|
||||
}
|
||||
|
||||
/*
|
||||
* Two address spaces supported: Memory or IO.
|
||||
* PCI_Config is not supported here because the GAS struct is insufficient
|
||||
*/
|
||||
switch (reg->space_id) {
|
||||
case ACPI_ADR_SPACE_SYSTEM_MEMORY:
|
||||
|
||||
status = acpi_os_write_memory((acpi_physical_address) address,
|
||||
value, width);
|
||||
break;
|
||||
|
||||
case ACPI_ADR_SPACE_SYSTEM_IO:
|
||||
|
||||
status = acpi_os_write_port((acpi_io_address) address, value,
|
||||
width);
|
||||
break;
|
||||
|
||||
default:
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Unsupported address space: %X", reg->space_id));
|
||||
return (AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_IO,
|
||||
"Wrote: %8.8X width %2d to %8.8X%8.8X (%s)\n",
|
||||
value, width, ACPI_FORMAT_UINT64(address),
|
||||
acpi_ut_get_region_name(reg->space_id)));
|
||||
|
||||
return (status);
|
||||
}
|
||||
|
||||
ACPI_EXPORT_SYMBOL(acpi_write)
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_get_register_unlocked
|
||||
*
|
||||
* PARAMETERS: register_id - ID of ACPI bit_register to access
|
||||
* return_value - Value that was read from the register
|
||||
*
|
||||
* RETURN: Status and the value read from specified Register. Value
|
||||
* returned is normalized to bit0 (is shifted all the way right)
|
||||
*
|
||||
* DESCRIPTION: ACPI bit_register read function. Does not acquire the HW lock.
|
||||
*
|
||||
******************************************************************************/
|
||||
acpi_status acpi_get_register_unlocked(u32 register_id, u32 *return_value)
|
||||
{
|
||||
u32 register_value = 0;
|
||||
struct acpi_bit_register_info *bit_reg_info;
|
||||
acpi_status status;
|
||||
|
||||
ACPI_FUNCTION_TRACE(acpi_get_register_unlocked);
|
||||
|
||||
/* 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);
|
||||
}
|
||||
|
||||
/* Read from the register */
|
||||
|
||||
status = acpi_hw_register_read(bit_reg_info->parent_register,
|
||||
®ister_value);
|
||||
|
||||
if (ACPI_SUCCESS(status)) {
|
||||
|
||||
/* Normalize the value that was read */
|
||||
|
||||
register_value =
|
||||
((register_value & bit_reg_info->access_bit_mask)
|
||||
>> bit_reg_info->bit_position);
|
||||
|
||||
*return_value = register_value;
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_IO, "Read value %8.8X register %X\n",
|
||||
register_value,
|
||||
bit_reg_info->parent_register));
|
||||
}
|
||||
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
ACPI_EXPORT_SYMBOL(acpi_get_register_unlocked)
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_get_register
|
||||
*
|
||||
* PARAMETERS: register_id - ID of ACPI bit_register to access
|
||||
* return_value - Value that was read from the register
|
||||
*
|
||||
* RETURN: Status and the value read from specified Register. Value
|
||||
* returned is normalized to bit0 (is shifted all the way right)
|
||||
*
|
||||
* DESCRIPTION: ACPI bit_register read function.
|
||||
*
|
||||
******************************************************************************/
|
||||
acpi_status acpi_get_register(u32 register_id, u32 *return_value)
|
||||
{
|
||||
acpi_status status;
|
||||
acpi_cpu_flags flags;
|
||||
|
||||
flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
|
||||
status = acpi_get_register_unlocked(register_id, return_value);
|
||||
acpi_os_release_lock(acpi_gbl_hardware_lock, flags);
|
||||
|
||||
return (status);
|
||||
}
|
||||
|
||||
ACPI_EXPORT_SYMBOL(acpi_get_register)
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* FUNCTION: acpi_set_register
|
||||
*
|
||||
* PARAMETERS: register_id - ID of ACPI bit_register to access
|
||||
* Value - (only used on write) value to write to the
|
||||
* Register, NOT pre-normalized to the bit pos
|
||||
*
|
||||
* RETURN: Status
|
||||
*
|
||||
* DESCRIPTION: ACPI Bit Register write function.
|
||||
*
|
||||
******************************************************************************/
|
||||
acpi_status acpi_set_register(u32 register_id, u32 value)
|
||||
{
|
||||
u32 register_value = 0;
|
||||
struct acpi_bit_register_info *bit_reg_info;
|
||||
acpi_status status;
|
||||
acpi_cpu_flags lock_flags;
|
||||
|
||||
ACPI_FUNCTION_TRACE_U32(acpi_set_register, register_id);
|
||||
|
||||
/* 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) {
|
||||
ACPI_ERROR((AE_INFO, "Bad ACPI HW RegisterId: %X",
|
||||
register_id));
|
||||
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
||||
}
|
||||
|
||||
lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
|
||||
|
||||
/* Always do a register read first so we can insert the new bits */
|
||||
|
||||
status = acpi_hw_register_read(bit_reg_info->parent_register,
|
||||
®ister_value);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
/*
|
||||
* Decode the Register ID
|
||||
* Register ID = [Register block ID] | [bit ID]
|
||||
*
|
||||
* Check bit ID to fine locate Register offset.
|
||||
* Check Mask to determine Register offset, and then read-write.
|
||||
*/
|
||||
switch (bit_reg_info->parent_register) {
|
||||
case ACPI_REGISTER_PM1_STATUS:
|
||||
|
||||
/*
|
||||
* Status Registers are different from the rest. Clear by
|
||||
* writing 1, and 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.
|
||||
*/
|
||||
value = ACPI_REGISTER_PREPARE_BITS(value,
|
||||
bit_reg_info->bit_position,
|
||||
bit_reg_info->
|
||||
access_bit_mask);
|
||||
if (value) {
|
||||
status =
|
||||
acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS,
|
||||
(u16) value);
|
||||
register_value = 0;
|
||||
}
|
||||
break;
|
||||
|
||||
case ACPI_REGISTER_PM1_ENABLE:
|
||||
|
||||
ACPI_REGISTER_INSERT_VALUE(register_value,
|
||||
bit_reg_info->bit_position,
|
||||
bit_reg_info->access_bit_mask,
|
||||
value);
|
||||
|
||||
status = acpi_hw_register_write(ACPI_REGISTER_PM1_ENABLE,
|
||||
(u16) register_value);
|
||||
break;
|
||||
|
||||
case ACPI_REGISTER_PM1_CONTROL:
|
||||
|
||||
/*
|
||||
* Write the PM1 Control register.
|
||||
* Note that at this level, the fact that there are actually TWO
|
||||
* registers (A and B - and B may not exist) is abstracted.
|
||||
*/
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_IO, "PM1 control: Read %X\n",
|
||||
register_value));
|
||||
|
||||
ACPI_REGISTER_INSERT_VALUE(register_value,
|
||||
bit_reg_info->bit_position,
|
||||
bit_reg_info->access_bit_mask,
|
||||
value);
|
||||
|
||||
status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
|
||||
(u16) register_value);
|
||||
break;
|
||||
|
||||
case ACPI_REGISTER_PM2_CONTROL:
|
||||
|
||||
status = acpi_hw_register_read(ACPI_REGISTER_PM2_CONTROL,
|
||||
®ister_value);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
goto unlock_and_exit;
|
||||
}
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_IO,
|
||||
"PM2 control: Read %X from %8.8X%8.8X\n",
|
||||
register_value,
|
||||
ACPI_FORMAT_UINT64(acpi_gbl_FADT.
|
||||
xpm2_control_block.
|
||||
address)));
|
||||
|
||||
ACPI_REGISTER_INSERT_VALUE(register_value,
|
||||
bit_reg_info->bit_position,
|
||||
bit_reg_info->access_bit_mask,
|
||||
value);
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_IO,
|
||||
"About to write %4.4X to %8.8X%8.8X\n",
|
||||
register_value,
|
||||
ACPI_FORMAT_UINT64(acpi_gbl_FADT.
|
||||
xpm2_control_block.
|
||||
address)));
|
||||
|
||||
status = acpi_hw_register_write(ACPI_REGISTER_PM2_CONTROL,
|
||||
(u8) (register_value));
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
unlock_and_exit:
|
||||
|
||||
acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags);
|
||||
|
||||
/* Normalize the value that was read */
|
||||
|
||||
ACPI_DEBUG_EXEC(register_value =
|
||||
((register_value & bit_reg_info->access_bit_mask) >>
|
||||
bit_reg_info->bit_position));
|
||||
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_IO,
|
||||
"Set bits: %8.8X actual %8.8X register %X\n", value,
|
||||
register_value, bit_reg_info->parent_register));
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
ACPI_EXPORT_SYMBOL(acpi_set_register)
|
||||
|
||||
/*******************************************************************************
|
||||
*
|
||||
* 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
|
||||
*
|
||||
* RETURN: Status - ACPI status
|
||||
*
|
||||
* DESCRIPTION: Obtain the SLP_TYPa and SLP_TYPb values for the requested sleep
|
||||
* state.
|
||||
*
|
||||
******************************************************************************/
|
||||
acpi_status
|
||||
acpi_get_sleep_type_data(u8 sleep_state, u8 *sleep_type_a, u8 *sleep_type_b)
|
||||
{
|
||||
acpi_status status = AE_OK;
|
||||
struct acpi_evaluate_info *info;
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
info->pathname =
|
||||
ACPI_CAST_PTR(char, acpi_gbl_sleep_state_names[sleep_state]);
|
||||
|
||||
/* Evaluate the namespace object containing the values for this state */
|
||||
|
||||
status = acpi_ns_evaluate(info);
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
|
||||
"%s while evaluating SleepState [%s]\n",
|
||||
acpi_format_exception(status),
|
||||
info->pathname));
|
||||
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
/* Must have a return object */
|
||||
|
||||
if (!info->return_object) {
|
||||
ACPI_ERROR((AE_INFO, "No Sleep State object returned from [%s]",
|
||||
info->pathname));
|
||||
status = AE_NOT_EXIST;
|
||||
}
|
||||
|
||||
/* It must be of type Package */
|
||||
|
||||
else if (ACPI_GET_OBJECT_TYPE(info->return_object) != ACPI_TYPE_PACKAGE) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Sleep State return object is not a Package"));
|
||||
status = AE_AML_OPERAND_TYPE;
|
||||
}
|
||||
|
||||
/*
|
||||
* The package must have at least two elements. NOTE (March 2005): This
|
||||
* goes against the current ACPI spec which defines this object as a
|
||||
* package with one encoded DWORD element. However, existing practice
|
||||
* by BIOS vendors seems to be to have 2 or more elements, at least
|
||||
* one per sleep type (A/B).
|
||||
*/
|
||||
else if (info->return_object->package.count < 2) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Sleep State return package does not have at least two elements"));
|
||||
status = AE_AML_NO_OPERAND;
|
||||
}
|
||||
|
||||
/* The first two elements must both be of type Integer */
|
||||
|
||||
else if ((ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[0])
|
||||
!= ACPI_TYPE_INTEGER) ||
|
||||
(ACPI_GET_OBJECT_TYPE(info->return_object->package.elements[1])
|
||||
!= ACPI_TYPE_INTEGER)) {
|
||||
ACPI_ERROR((AE_INFO,
|
||||
"Sleep State return package elements are not both Integers (%s, %s)",
|
||||
acpi_ut_get_object_type_name(info->return_object->
|
||||
package.elements[0]),
|
||||
acpi_ut_get_object_type_name(info->return_object->
|
||||
package.elements[1])));
|
||||
status = AE_AML_OPERAND_TYPE;
|
||||
} else {
|
||||
/* Valid _Sx_ package size, type, and value */
|
||||
|
||||
*sleep_type_a = (u8)
|
||||
(info->return_object->package.elements[0])->integer.value;
|
||||
*sleep_type_b = (u8)
|
||||
(info->return_object->package.elements[1])->integer.value;
|
||||
}
|
||||
|
||||
if (ACPI_FAILURE(status)) {
|
||||
ACPI_EXCEPTION((AE_INFO, status,
|
||||
"While evaluating SleepState [%s], bad Sleep object %p type %s",
|
||||
info->pathname, info->return_object,
|
||||
acpi_ut_get_object_type_name(info->
|
||||
return_object)));
|
||||
}
|
||||
|
||||
acpi_ut_remove_reference(info->return_object);
|
||||
|
||||
cleanup:
|
||||
ACPI_FREE(info);
|
||||
return_ACPI_STATUS(status);
|
||||
}
|
||||
|
||||
ACPI_EXPORT_SYMBOL(acpi_get_sleep_type_data)
|
Loading…
Reference in New Issue