C++ ACPI_PTR_TO_PHYSADDR函數代碼示例

void
AcpiTbUninstallTable (
    ACPI_TABLE_DESC         *TableDesc)
{

    ACPI_FUNCTION_TRACE (TbUninstallTable);


    /* Table must be installed */

    if (!TableDesc->Address)
    {
        return_VOID;
    }

    AcpiTbInvalidateTable (TableDesc);

    if ((TableDesc->Flags & ACPI_TABLE_ORIGIN_MASK) ==
        ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL)
    {
        ACPI_FREE (ACPI_PHYSADDR_TO_PTR (TableDesc->Address));
    }

    TableDesc->Address = ACPI_PTR_TO_PHYSADDR (NULL);
    return_VOID;
}

ACPI_PHYSICAL_ADDRESS
AcpiOsGetRootPointer (
    void)
{

    return (ACPI_PTR_TO_PHYSADDR (&LocalRSDP));
}

ACPI_PHYSICAL_ADDRESS
AcpiOsGetRootPointer (
    void)
{

    return (ACPI_PTR_TO_PHYSADDR (RsdpCode));
}

ACPI_STATUS
AcpiLoadTable (
    ACPI_TABLE_HEADER       *Table)
{
    ACPI_STATUS             Status;
    UINT32                  TableIndex;


    ACPI_FUNCTION_TRACE (AcpiLoadTable);


    /* Parameter validation */

    if (!Table)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Install the table and load it into the namespace */

    ACPI_INFO (("Host-directed Dynamic ACPI Table Load:"));
    Status = AcpiTbInstallAndLoadTable (ACPI_PTR_TO_PHYSADDR (Table),
        ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL, FALSE, &TableIndex);
    return_ACPI_STATUS (Status);
}

ACPI_TABLE_HEADER *
AcpiTbCopyDsdt (
    UINT32                  TableIndex)
{
    ACPI_TABLE_HEADER       *NewTable;
    ACPI_TABLE_DESC         *TableDesc;


    TableDesc = &AcpiGbl_RootTableList.Tables[TableIndex];

    NewTable = ACPI_ALLOCATE (TableDesc->Length);
    if (!NewTable)
    {
        ACPI_ERROR ((AE_INFO, "Could not copy DSDT of length 0x%X",
            TableDesc->Length));
        return (NULL);
    }

    memcpy (NewTable, TableDesc->Pointer, TableDesc->Length);
    AcpiTbUninstallTable (TableDesc);

    AcpiTbInitTableDescriptor (
        &AcpiGbl_RootTableList.Tables[AcpiGbl_DsdtIndex],
        ACPI_PTR_TO_PHYSADDR (NewTable),
        ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL, NewTable);

    ACPI_INFO ((
        "Forced DSDT copy: length 0x%05X copied locally, original unmapped",
        NewTable->Length));

    return (NewTable);
}

/*******************************************************************************
 *
 * FUNCTION:    acpi_load_table
 *
 * PARAMETERS:  table               - Pointer to a buffer containing the ACPI
 *                                    table to be loaded.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Dynamically load an ACPI table from the caller's buffer. Must
 *              be a valid ACPI table with a valid ACPI table header.
 *              Note1: Mainly intended to support hotplug addition of SSDTs.
 *              Note2: Does not copy the incoming table. User is responsible
 *              to ensure that the table is not deleted or unmapped.
 *
 ******************************************************************************/
acpi_status acpi_load_table(struct acpi_table_header *table)
{
	acpi_status status;
	u32 table_index;

	ACPI_FUNCTION_TRACE(acpi_load_table);

	/* Parameter validation */

	if (!table) {
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	/* Must acquire the interpreter lock during this operation */

	status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Install the table and load it into the namespace */

	ACPI_INFO((AE_INFO, "Host-directed Dynamic ACPI Table Load:"));
	(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);

	status = acpi_tb_install_standard_table(ACPI_PTR_TO_PHYSADDR(table),
						ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
						TRUE, FALSE, &table_index);

	(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
	if (ACPI_FAILURE(status)) {
		goto unlock_and_exit;
	}

	/*
	 * Note: Now table is "INSTALLED", it must be validated before
	 * using.
	 */
	status =
	    acpi_tb_validate_table(&acpi_gbl_root_table_list.
				   tables[table_index]);
	if (ACPI_FAILURE(status)) {
		goto unlock_and_exit;
	}

	status = acpi_ns_load_table(table_index, acpi_gbl_root_node);

	/* Invoke table handler if present */

	if (acpi_gbl_table_handler) {
		(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table,
					     acpi_gbl_table_handler_context);
	}

unlock_and_exit:
	(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
	return_ACPI_STATUS(status);
}

ACPI_STATUS
AcpiLoadTable (
    ACPI_TABLE_HEADER       *Table)
{
    ACPI_STATUS             Status;
    ACPI_TABLE_DESC         TableDesc;
    UINT32                  TableIndex;


    ACPI_FUNCTION_TRACE (AcpiLoadTable);


    /* Parameter validation */

    if (!Table)
    {
        return_ACPI_STATUS (AE_BAD_PARAMETER);
    }

    /* Init local table descriptor */

    ACPI_MEMSET (&TableDesc, 0, sizeof (ACPI_TABLE_DESC));
    TableDesc.Address = ACPI_PTR_TO_PHYSADDR (Table);
    TableDesc.Pointer = Table;
    TableDesc.Length = Table->Length;
    TableDesc.Flags = ACPI_TABLE_ORIGIN_UNKNOWN;

    /* Must acquire the interpreter lock during this operation */

    Status = AcpiUtAcquireMutex (ACPI_MTX_INTERPRETER);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Install the table and load it into the namespace */

    ACPI_INFO ((AE_INFO, "Host-directed Dynamic ACPI Table Load:"));
    Status = AcpiTbAddTable (&TableDesc, &TableIndex);
    if (ACPI_FAILURE (Status))
    {
        goto UnlockAndExit;
    }

    Status = AcpiNsLoadTable (TableIndex, AcpiGbl_RootNode);

    /* Invoke table handler if present */

    if (AcpiGbl_TableHandler)
    {
        (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, Table,
                    AcpiGbl_TableHandlerContext);
    }

UnlockAndExit:
    (void) AcpiUtReleaseMutex (ACPI_MTX_INTERPRETER);
    return_ACPI_STATUS (Status);
}

ACPI_STATUS AcpiOsGetPhysicalAddress(
		void *LogicalAddress,
		ACPI_PHYSICAL_ADDRESS *PhysicalAddress) {
	PRINTD("AcpiOsGetPhysicalAddress() called");

	if (!LogicalAddress || !PhysicalAddress) {
		return AE_BAD_PARAMETER;
	}

	*PhysicalAddress = ACPI_PTR_TO_PHYSADDR(LogicalAddress);

	return AE_OK;
}

acpi_status acpi_load_table(struct acpi_table_header *table)
{
	acpi_status status;
	struct acpi_table_desc table_desc;
	u32 table_index;

	ACPI_FUNCTION_TRACE(acpi_load_table);

	/* Parameter validation */

	if (!table) {
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	/* Init local table descriptor */

	ACPI_MEMSET(&table_desc, 0, sizeof(struct acpi_table_desc));
	table_desc.address = ACPI_PTR_TO_PHYSADDR(table);
	table_desc.pointer = table;
	table_desc.length = table->length;
	table_desc.flags = ACPI_TABLE_ORIGIN_UNKNOWN;

	/* Must acquire the interpreter lock during this operation */

	status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Install the table and load it into the namespace */

	ACPI_INFO((AE_INFO, "Host-directed Dynamic ACPI Table Load:"));
	status = acpi_tb_add_table(&table_desc, &table_index);
	if (ACPI_FAILURE(status)) {
		goto unlock_and_exit;
	}

	status = acpi_ns_load_table(table_index, acpi_gbl_root_node);

	/* Invoke table handler if present */

	if (acpi_gbl_table_handler) {
		(void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_LOAD, table,
					     acpi_gbl_table_handler_context);
	}

      unlock_and_exit:
	(void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
	return_ACPI_STATUS(status);
}

ACPI_TABLE_HEADER *
AcpiTbTableOverride (
    ACPI_TABLE_HEADER       *TableHeader,
    ACPI_TABLE_DESC         *TableDesc)
{
    ACPI_STATUS             Status;
    ACPI_TABLE_HEADER       *NewTable = NULL;
    ACPI_PHYSICAL_ADDRESS   NewAddress = 0;
    UINT32                  NewTableLength = 0;
    UINT8                   NewFlags;
    char                    *OverrideType;


    /* (1) Attempt logical override (returns a logical address) */

    Status = AcpiOsTableOverride (TableHeader, &NewTable);
    if (ACPI_SUCCESS (Status) && NewTable)
    {
        NewAddress = ACPI_PTR_TO_PHYSADDR (NewTable);
        NewTableLength = NewTable->Length;
        NewFlags = ACPI_TABLE_ORIGIN_OVERRIDE;
        OverrideType = "Logical";
        goto FinishOverride;
    }

    /* (2) Attempt physical override (returns a physical address) */

    Status = AcpiOsPhysicalTableOverride (TableHeader,
        &NewAddress, &NewTableLength);
    if (ACPI_SUCCESS (Status) && NewAddress && NewTableLength)
    {
        /* Map the entire new table */

        NewTable = AcpiOsMapMemory (NewAddress, NewTableLength);
        if (!NewTable)
        {
            ACPI_EXCEPTION ((AE_INFO, AE_NO_MEMORY,
                "%4.4s %p Attempted physical table override failed",
                TableHeader->Signature,
                ACPI_CAST_PTR (void, TableDesc->Address)));
            return (NULL);
        }

static ACPI_PHYSICAL_ADDRESS
AcpiEfiGetRsdpViaGuid (
    EFI_GUID                *Guid)
{
    ACPI_PHYSICAL_ADDRESS   Address = 0;
    int                     i;


    for (i = 0; i < ST->NumberOfTableEntries; i++)
    {
        if (AcpiEfiCompareGuid (&ST->ConfigurationTable[i].VendorGuid, Guid))
        {
            Address = ACPI_PTR_TO_PHYSADDR (
                    ST->ConfigurationTable[i].VendorTable);
            break;
        }
    }

    return (Address);
}

struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header
						 *table_header,
						 struct acpi_table_desc
						 *table_desc)
{
	acpi_status status;
	struct acpi_table_header *new_table = NULL;
	acpi_physical_address new_address = 0;
	u32 new_table_length = 0;
	u8 new_flags;
	char *override_type;

	/* (1) Attempt logical override (returns a logical address) */

	status = acpi_os_table_override(table_header, &new_table);
	if (ACPI_SUCCESS(status) && new_table) {
		new_address = ACPI_PTR_TO_PHYSADDR(new_table);
		new_table_length = new_table->length;
		new_flags = ACPI_TABLE_ORIGIN_OVERRIDE;
		override_type = "Logical";
		goto finish_override;
	}

	/* (2) Attempt physical override (returns a physical address) */

	status = acpi_os_physical_table_override(table_header,
						 &new_address,
						 &new_table_length);
	if (ACPI_SUCCESS(status) && new_address && new_table_length) {

		/* Map the entire new table */

		new_table = acpi_os_map_memory(new_address, new_table_length);
		if (!new_table) {
			ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY,
					"%4.4s %p Attempted physical table override failed",
					table_header->signature,
					ACPI_CAST_PTR(void,
						      table_desc->address)));
			return (NULL);
		}

/*******************************************************************************
 *
 * FUNCTION:    acpi_load_table
 *
 * PARAMETERS:  table               - Pointer to a buffer containing the ACPI
 *                                    table to be loaded.
 *
 * RETURN:      Status
 *
 * DESCRIPTION: Dynamically load an ACPI table from the caller's buffer. Must
 *              be a valid ACPI table with a valid ACPI table header.
 *              Note1: Mainly intended to support hotplug addition of SSDTs.
 *              Note2: Does not copy the incoming table. User is responsible
 *              to ensure that the table is not deleted or unmapped.
 *
 ******************************************************************************/
acpi_status acpi_load_table(struct acpi_table_header *table)
{
	acpi_status status;
	u32 table_index;

	ACPI_FUNCTION_TRACE(acpi_load_table);

	/* Parameter validation */

	if (!table) {
		return_ACPI_STATUS(AE_BAD_PARAMETER);
	}

	/* Install the table and load it into the namespace */

	ACPI_INFO(("Host-directed Dynamic ACPI Table Load:"));
	status = acpi_tb_install_and_load_table(ACPI_PTR_TO_PHYSADDR(table),
						ACPI_TABLE_ORIGIN_EXTERNAL_VIRTUAL,
						FALSE, &table_index);
	return_ACPI_STATUS(status);
}

static ACPI_STATUS
AdStoreTable (
    ACPI_TABLE_HEADER       *Table,
    UINT32                  *TableIndex)
{
    ACPI_STATUS             Status;
    ACPI_TABLE_DESC         *TableDesc;


    Status = AcpiTbGetNextTableDescriptor (TableIndex, &TableDesc);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /* Initialize added table */

    AcpiTbInitTableDescriptor (TableDesc, ACPI_PTR_TO_PHYSADDR (Table),
        ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL, Table);
    Status = AcpiTbValidateTable (TableDesc);
    return (Status);
}

//.........這裏部分代碼省略.........

        /* Table cannot extend beyond the buffer */

        if (Length > ObjDesc->Buffer.Length)
        {
            return_ACPI_STATUS (AE_AML_BUFFER_LIMIT);
        }
        if (Length < sizeof (ACPI_TABLE_HEADER))
        {
            return_ACPI_STATUS (AE_INVALID_TABLE_LENGTH);
        }

        /*
         * Copy the table from the buffer because the buffer could be modified
         * or even deleted in the future
         */
        Table = ACPI_ALLOCATE (Length);
        if (!Table)
        {
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        ACPI_MEMCPY (Table, TableHeader, Length);
        break;

    default:

        return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
    }

    /* Install the new table into the local data structures */

    ACPI_INFO ((AE_INFO, "Dynamic OEM Table Load:"));
    (void) AcpiUtAcquireMutex (ACPI_MTX_TABLES);

    Status = AcpiTbInstallStandardTable (ACPI_PTR_TO_PHYSADDR (Table),
                ACPI_TABLE_ORIGIN_INTERNAL_VIRTUAL, TRUE, TRUE,
                &TableIndex);

    (void) AcpiUtReleaseMutex (ACPI_MTX_TABLES);
    if (ACPI_FAILURE (Status))
    {
        /* Delete allocated table buffer */

        ACPI_FREE (Table);
        return_ACPI_STATUS (Status);
    }

    /*
     * Note: Now table is "INSTALLED", it must be validated before
     * loading.
     */
    Status = AcpiTbValidateTable (&AcpiGbl_RootTableList.Tables[TableIndex]);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /*
     * Add the table to the namespace.
     *
     * Note: Load the table objects relative to the root of the namespace.
     * This appears to go against the ACPI specification, but we do it for
     * compatibility with other ACPI implementations.
     */
    Status = AcpiExAddTable (TableIndex, AcpiGbl_RootNode, &DdbHandle);
    if (ACPI_FAILURE (Status))
    {
        /* On error, TablePtr was deallocated above */

        return_ACPI_STATUS (Status);
    }

    /* Store the DdbHandle into the Target operand */

    Status = AcpiExStore (DdbHandle, Target, WalkState);
    if (ACPI_FAILURE (Status))
    {
        (void) AcpiExUnloadTable (DdbHandle);

        /* TablePtr was deallocated above */

        AcpiUtRemoveReference (DdbHandle);
        return_ACPI_STATUS (Status);
    }

    /* Remove the reference by added by AcpiExStore above */

    AcpiUtRemoveReference (DdbHandle);

    /* Invoke table handler if present */

    if (AcpiGbl_TableHandler)
    {
        (void) AcpiGbl_TableHandler (ACPI_TABLE_EVENT_LOAD, Table,
                    AcpiGbl_TableHandlerContext);
    }

    return_ACPI_STATUS (Status);
}