C++ ACPI_FORMAT_NATIVE_UINT函数代码示例

ACPI_STATUS
AcpiExSystemIoSpaceHandler (
    UINT32                  Function,
    ACPI_PHYSICAL_ADDRESS   Address,
    UINT32                  BitWidth,
    UINT64                  *Value,
    void                    *HandlerContext,
    void                    *RegionContext)
{
    ACPI_STATUS             Status = AE_OK;
    UINT32                  Value32;


    ACPI_FUNCTION_TRACE (ExSystemIoSpaceHandler);


    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
        "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n",
        BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));

    /* Decode the function parameter */

    switch (Function)
    {
    case ACPI_READ:

        Status = AcpiHwReadPort ((ACPI_IO_ADDRESS) Address,
                    &Value32, BitWidth);
        *Value = Value32;
        break;

    case ACPI_WRITE:

        Status = AcpiHwWritePort ((ACPI_IO_ADDRESS) Address,
                    (UINT32) *Value, BitWidth);
        break;

    default:

        Status = AE_BAD_PARAMETER;
        break;
    }

    return_ACPI_STATUS (Status);
}

acpi_status
acpi_ex_system_io_space_handler(u32 function,
				acpi_physical_address address,
				u32 bit_width,
				u64 *value,
				void *handler_context, void *region_context)
{
	acpi_status status = AE_OK;
	u32 value32;

	ACPI_FUNCTION_TRACE(ex_system_io_space_handler);

	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
			  "System-IO (width %u) R/W %u Address=%8.8X%8.8X\n",
			  bit_width, function,
			  ACPI_FORMAT_NATIVE_UINT(address)));

	/* Decode the function parameter */

	switch (function) {
	case ACPI_READ:

		status = acpi_hw_read_port((acpi_io_address) address,
					   &value32, bit_width);
		*value = value32;
		break;

	case ACPI_WRITE:

		status = acpi_hw_write_port((acpi_io_address) address,
					    (u32) * value, bit_width);
		break;

	default:

		status = AE_BAD_PARAMETER;
		break;
	}

	return_ACPI_STATUS(status);
}

ACPI_STATUS
AcpiDsEvalRegionOperands (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_STATUS             Status;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     *OperandDesc;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_PARSE_OBJECT       *NextOp;


    ACPI_FUNCTION_TRACE_PTR (DsEvalRegionOperands, Op);


    /*
     * This is where we evaluate the address and length fields of the
     * OpRegion declaration
     */
    Node =  Op->Common.Node;

    /* NextOp points to the op that holds the SpaceID */

    NextOp = Op->Common.Value.Arg;

    /* NextOp points to address op */

    NextOp = NextOp->Common.Next;

    /* Evaluate/create the address and length operands */

    Status = AcpiDsCreateOperands (WalkState, NextOp);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /* Resolve the length and address operands to numbers */

    Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
                                    ACPI_WALK_OPERANDS, WalkState);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    ObjDesc = AcpiNsGetAttachedObject (Node);
    if (!ObjDesc)
    {
        return_ACPI_STATUS (AE_NOT_EXIST);
    }

    /*
     * Get the length operand and save it
     * (at Top of stack)
     */
    OperandDesc = WalkState->Operands[WalkState->NumOperands - 1];

    ObjDesc->Region.Length = (UINT32) OperandDesc->Integer.Value;
    AcpiUtRemoveReference (OperandDesc);

    /*
     * Get the address and save it
     * (at top of stack - 1)
     */
    OperandDesc = WalkState->Operands[WalkState->NumOperands - 2];

    ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS)
                              OperandDesc->Integer.Value;
    AcpiUtRemoveReference (OperandDesc);

    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
                       ObjDesc,
                       ACPI_FORMAT_NATIVE_UINT (ObjDesc->Region.Address),
                       ObjDesc->Region.Length));

    /* Now the address and length are valid for this opregion */

    ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;

    return_ACPI_STATUS (Status);
}

//.........这里部分代码省略.........

				/* Dump some of the buffer */

				if (obj_desc->buffer.length > 0) {
					acpi_os_printf(" =");
					for (i = 0;
					     (i < obj_desc->buffer.length
					      && i < 12); i++) {
						acpi_os_printf(" %.2hX",
							       obj_desc->buffer.
							       pointer[i]);
					}
				}
				acpi_os_printf("\n");
			} else {
				acpi_os_printf("[Length not yet evaluated]\n");
			}
			break;

		case ACPI_TYPE_STRING:

			acpi_os_printf("Len %.2X ", obj_desc->string.length);
			acpi_ut_print_string(obj_desc->string.pointer, 32);
			acpi_os_printf("\n");
			break;

		case ACPI_TYPE_REGION:

			acpi_os_printf("[%s]",
				       acpi_ut_get_region_name(obj_desc->region.
							       space_id));
			if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
				acpi_os_printf(" Addr %8.8X%8.8X Len %.4X\n",
					       ACPI_FORMAT_NATIVE_UINT
					       (obj_desc->region.address),
					       obj_desc->region.length);
			} else {
				acpi_os_printf
				    (" [Address/Length not yet evaluated]\n");
			}
			break;

		case ACPI_TYPE_LOCAL_REFERENCE:

			acpi_os_printf("[%s]\n",
				       acpi_ps_get_opcode_name(obj_desc->
							       reference.
							       opcode));
			break;

		case ACPI_TYPE_BUFFER_FIELD:

			if (obj_desc->buffer_field.buffer_obj &&
			    obj_desc->buffer_field.buffer_obj->buffer.node) {
				acpi_os_printf("Buf [%4.4s]",
					       acpi_ut_get_node_name(obj_desc->
								     buffer_field.
								     buffer_obj->
								     buffer.
								     node));
			}
			break;

		case ACPI_TYPE_LOCAL_REGION_FIELD:

			acpi_os_printf("Rgn [%4.4s]",

//.........这里部分代码省略.........

        Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE,
                    Context, &RegionContext);

        /* Re-enter the interpreter */

        AcpiExEnterInterpreter ();

        /* Check for failure of the Region Setup */

        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status,
                "During region initialization: [%s]",
                AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
            return_ACPI_STATUS (Status);
        }

        /* Region initialization may have been completed by RegionSetup */

        if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE))
        {
            RegionObj->Region.Flags |= AOPOBJ_SETUP_COMPLETE;

            /*
             * Save the returned context for use in all accesses to
             * the handler for this particular region
             */
            if (!(RegionObj2->Extra.RegionContext))
            {
                RegionObj2->Extra.RegionContext = RegionContext;
            }
        }
    }

    /* We have everything we need, we can invoke the address space handler */

    Handler = HandlerDesc->AddressSpace.Handler;

    ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
        "Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
        &RegionObj->Region.Handler->AddressSpace, Handler,
        ACPI_FORMAT_NATIVE_UINT (RegionObj->Region.Address + RegionOffset),
        AcpiUtGetRegionName (RegionObj->Region.SpaceId)));

    /*
     * Special handling for GenericSerialBus and GeneralPurposeIo:
     * There are three extra parameters that must be passed to the
     * handler via the context:
     *   1) Connection buffer, a resource template from Connection() op.
     *   2) Length of the above buffer.
     *   3) Actual access length from the AccessAs() op.
     */
    if (((RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS) ||
            (RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO)) &&
        Context &&
        FieldObj)
    {
        /* Get the Connection (ResourceTemplate) buffer */

        Context->Connection = FieldObj->Field.ResourceBuffer;
        Context->Length = FieldObj->Field.ResourceLength;
        Context->AccessLength = FieldObj->Field.AccessLength;
    }

    if (!(HandlerDesc->AddressSpace.HandlerFlags &
            ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
    {
        /*
         * For handlers other than the default (supplied) handlers, we must
         * exit the interpreter because the handler *might* block -- we don't
         * know what it will do, so we can't hold the lock on the intepreter.
         */
        AcpiExExitInterpreter();
    }

    /* Call the handler */

    Status = Handler (Function,
        (RegionObj->Region.Address + RegionOffset), BitWidth, Value,
        Context, RegionObj2->Extra.RegionContext);

    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "Returned by Handler for [%s]",
            AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
    }

    if (!(HandlerDesc->AddressSpace.HandlerFlags &
            ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
    {
        /*
         * We just returned from a non-default handler, we must re-enter the
         * interpreter
         */
       AcpiExEnterInterpreter ();
    }

    return_ACPI_STATUS (Status);
}

//.........这里部分代码省略.........

		/*
		 * Attempt to map from the requested address to the end of the region.
		 * However, we will never map more than one page, nor will we cross
		 * a page boundary.
		 */
		map_length = (acpi_size)
		    ((mem_info->address + mem_info->length) - address);

		/*
		 * If mapping the entire remaining portion of the region will cross
		 * a page boundary, just map up to the page boundary, do not cross.
		 * On some systems, crossing a page boundary while mapping regions
		 * can cause warnings if the pages have different attributes
		 * due to resource management
		 */
		page_boundary_map_length =
		    ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address;

		if (!page_boundary_map_length) {
			page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE;
		}

		if (map_length > page_boundary_map_length) {
			map_length = page_boundary_map_length;
		}

		/* Create a new mapping starting at the address given */

		mem_info->mapped_logical_address = acpi_os_map_memory((acpi_physical_address) address, map_length);
		if (!mem_info->mapped_logical_address) {
			ACPI_ERROR((AE_INFO,
				    "Could not map memory at 0x%8.8X%8.8X, size %u",
				    ACPI_FORMAT_NATIVE_UINT(address),
				    (u32) map_length));
			mem_info->mapped_length = 0;
			return_ACPI_STATUS(AE_NO_MEMORY);
		}

		/* Save the physical address and mapping size */

		mem_info->mapped_physical_address = address;
		mem_info->mapped_length = map_length;
	}

	/*
	 * Generate a logical pointer corresponding to the address we want to
	 * access
	 */
	logical_addr_ptr = mem_info->mapped_logical_address +
	    ((u64) address - (u64) mem_info->mapped_physical_address);

	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
			  "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
			  bit_width, function,
			  ACPI_FORMAT_NATIVE_UINT(address)));

	/*
	 * Perform the memory read or write
	 *
	 * Note: For machines that do not support non-aligned transfers, the target
	 * address was checked for alignment above.  We do not attempt to break the
	 * transfer up into smaller (byte-size) chunks because the AML specifically
	 * asked for a transfer width that the hardware may require.
	 */
	switch (function) {

//.........这里部分代码省略.........
				    "No init routine for region(%p) [%s]",
				    region_obj,
				    acpi_ut_get_region_name(region_obj->region.
							    space_id)));
			return_ACPI_STATUS(AE_NOT_EXIST);
		}

		/*
		 * We must exit the interpreter because the region setup will
		 * potentially execute control methods (for example, the _REG method
		 * for this region)
		 */
		acpi_ex_exit_interpreter();

		status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
				      handler_desc->address_space.context,
				      &region_context);

		/* Re-enter the interpreter */

		acpi_ex_enter_interpreter();

		/* Check for failure of the Region Setup */

		if (ACPI_FAILURE(status)) {
			ACPI_EXCEPTION((AE_INFO, status,
					"During region initialization: [%s]",
					acpi_ut_get_region_name(region_obj->
								region.
								space_id)));
			return_ACPI_STATUS(status);
		}

		/* Region initialization may have been completed by region_setup */

		if (!(region_obj->region.flags & AOPOBJ_SETUP_COMPLETE)) {
			region_obj->region.flags |= AOPOBJ_SETUP_COMPLETE;

			if (region_obj2->extra.region_context) {

				/* The handler for this region was already installed */

				ACPI_FREE(region_context);
			} else {
				/*
				 * Save the returned context for use in all accesses to
				 * this particular region
				 */
				region_obj2->extra.region_context =
				    region_context;
			}
		}
	}

	/* We have everything we need, we can invoke the address space handler */

	handler = handler_desc->address_space.handler;

	ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
			  "Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
			  &region_obj->region.handler->address_space, handler,
			  ACPI_FORMAT_NATIVE_UINT(region_obj->region.address +
						  region_offset),
			  acpi_ut_get_region_name(region_obj->region.
						  space_id)));

	if (!(handler_desc->address_space.handler_flags &
	      ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
		/*
		 * For handlers other than the default (supplied) handlers, we must
		 * exit the interpreter because the handler *might* block -- we don't
		 * know what it will do, so we can't hold the lock on the intepreter.
		 */
		acpi_ex_exit_interpreter();
	}

	/* Call the handler */

	status = handler(function,
			 (region_obj->region.address + region_offset),
			 bit_width, value, handler_desc->address_space.context,
			 region_obj2->extra.region_context);

	if (ACPI_FAILURE(status)) {
		ACPI_EXCEPTION((AE_INFO, status, "Returned by Handler for [%s]",
				acpi_ut_get_region_name(region_obj->region.
							space_id)));
	}

	if (!(handler_desc->address_space.handler_flags &
	      ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) {
		/*
		 * We just returned from a non-default handler, we must re-enter the
		 * interpreter
		 */
		acpi_ex_enter_interpreter();
	}

	return_ACPI_STATUS(status);
}

//.........这里部分代码省略.........
            ((MemInfo->Address + MemInfo->Length) - Address);

        /*
         * If mapping the entire remaining portion of the region will cross
         * a page boundary, just map up to the page boundary, do not cross.
         * On some systems, crossing a page boundary while mapping regions
         * can cause warnings if the pages have different attributes
         * due to resource management.
         *
         * This has the added benefit of constraining a single mapping to
         * one page, which is similar to the original code that used a 4k
         * maximum window.
         */
        PageBoundaryMapLength =
            ACPI_ROUND_UP (Address, ACPI_DEFAULT_PAGE_SIZE) - Address;
        if (PageBoundaryMapLength == 0)
        {
            PageBoundaryMapLength = ACPI_DEFAULT_PAGE_SIZE;
        }

        if (MapLength > PageBoundaryMapLength)
        {
            MapLength = PageBoundaryMapLength;
        }

        /* Create a new mapping starting at the address given */

        MemInfo->MappedLogicalAddress = AcpiOsMapMemory (
            (ACPI_PHYSICAL_ADDRESS) Address, MapLength);
        if (!MemInfo->MappedLogicalAddress)
        {
            ACPI_ERROR ((AE_INFO,
                "Could not map memory at 0x%8.8X%8.8X, size %u",
                ACPI_FORMAT_NATIVE_UINT (Address), (UINT32) MapLength));
            MemInfo->MappedLength = 0;
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        /* Save the physical address and mapping size */

        MemInfo->MappedPhysicalAddress = Address;
        MemInfo->MappedLength = MapLength;
    }

    /*
     * Generate a logical pointer corresponding to the address we want to
     * access
     */
    LogicalAddrPtr = MemInfo->MappedLogicalAddress +
        ((UINT64) Address - (UINT64) MemInfo->MappedPhysicalAddress);

    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
        "System-Memory (width %u) R/W %u Address=%8.8X%8.8X\n",
        BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));

    /*
     * Perform the memory read or write
     *
     * Note: For machines that do not support non-aligned transfers, the target
     * address was checked for alignment above. We do not attempt to break the
     * transfer up into smaller (byte-size) chunks because the AML specifically
     * asked for a transfer width that the hardware may require.
     */
    switch (Function)
    {
    case ACPI_READ:

//.........这里部分代码省略.........
            /* No initialization routine, exit with error */

            ACPI_ERROR ((AE_INFO,
                "No init routine for region(%p) [%s]",
                RegionObj, AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
            return_ACPI_STATUS (AE_NOT_EXIST);
        }

        /*
         * We must exit the interpreter because the region setup will
         * potentially execute control methods (for example, the _REG method
         * for this region)
         */
        AcpiExExitInterpreter ();

        Status = RegionSetup (RegionObj, ACPI_REGION_ACTIVATE,
                    HandlerDesc->AddressSpace.Context, &RegionContext);

        /* Re-enter the interpreter */

        AcpiExEnterInterpreter ();

        /* Check for failure of the Region Setup */

        if (ACPI_FAILURE (Status))
        {
            ACPI_EXCEPTION ((AE_INFO, Status,
                "During region initialization: [%s]",
                AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
            return_ACPI_STATUS (Status);
        }

        /* Region initialization may have been completed by RegionSetup */

        if (!(RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE))
        {
            RegionObj->Region.Flags |= AOPOBJ_SETUP_COMPLETE;

            if (RegionObj2->Extra.RegionContext)
            {
                /* The handler for this region was already installed */

                ACPI_FREE (RegionContext);
            }
            else
            {
                /*
                 * Save the returned context for use in all accesses to
                 * this particular region
                 */
                RegionObj2->Extra.RegionContext = RegionContext;
            }
        }
    }

    /* We have everything we need, we can invoke the address space handler */

    Handler = HandlerDesc->AddressSpace.Handler;

    ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
        "Handler %p (@%p) Address %8.8X%8.8X [%s]\n",
        &RegionObj->Region.Handler->AddressSpace, Handler,
        ACPI_FORMAT_NATIVE_UINT (RegionObj->Region.Address + RegionOffset),
        AcpiUtGetRegionName (RegionObj->Region.SpaceId)));

    if (!(HandlerDesc->AddressSpace.HandlerFlags &
            ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
    {
        /*
         * For handlers other than the default (supplied) handlers, we must
         * exit the interpreter because the handler *might* block -- we don't
         * know what it will do, so we can't hold the lock on the intepreter.
         */
        AcpiExExitInterpreter();
    }

    /* Call the handler */

    Status = Handler (Function,
        (RegionObj->Region.Address + RegionOffset), BitWidth, Value,
        HandlerDesc->AddressSpace.Context, RegionObj2->Extra.RegionContext);

    if (ACPI_FAILURE (Status))
    {
        ACPI_EXCEPTION ((AE_INFO, Status, "Returned by Handler for [%s]",
            AcpiUtGetRegionName (RegionObj->Region.SpaceId)));
    }

    if (!(HandlerDesc->AddressSpace.HandlerFlags &
            ACPI_ADDR_HANDLER_DEFAULT_INSTALLED))
    {
        /*
         * We just returned from a non-default handler, we must re-enter the
         * interpreter
         */
       AcpiExEnterInterpreter ();
    }

    return_ACPI_STATUS (Status);
}

//.........这里部分代码省略.........

				

				if (obj_desc->buffer.length > 0) {
					acpi_os_printf(" =");
					for (i = 0;
					     (i < obj_desc->buffer.length
					      && i < 12); i++) {
						acpi_os_printf(" %.2hX",
							       obj_desc->buffer.
							       pointer[i]);
					}
				}
				acpi_os_printf("\n");
			} else {
				acpi_os_printf("[Length not yet evaluated]\n");
			}
			break;

		case ACPI_TYPE_STRING:

			acpi_os_printf("Len %.2X ", obj_desc->string.length);
			acpi_ut_print_string(obj_desc->string.pointer, 32);
			acpi_os_printf("\n");
			break;

		case ACPI_TYPE_REGION:

			acpi_os_printf("[%s]",
				       acpi_ut_get_region_name(obj_desc->region.
							       space_id));
			if (obj_desc->region.flags & AOPOBJ_DATA_VALID) {
				acpi_os_printf(" Addr %8.8X%8.8X Len %.4X\n",
					       ACPI_FORMAT_NATIVE_UINT
					       (obj_desc->region.address),
					       obj_desc->region.length);
			} else {
				acpi_os_printf
				    (" [Address/Length not yet evaluated]\n");
			}
			break;

		case ACPI_TYPE_LOCAL_REFERENCE:

			acpi_os_printf("[%s]\n",
				       acpi_ut_get_reference_name(obj_desc));
			break;

		case ACPI_TYPE_BUFFER_FIELD:

			if (obj_desc->buffer_field.buffer_obj &&
			    obj_desc->buffer_field.buffer_obj->buffer.node) {
				acpi_os_printf("Buf [%4.4s]",
					       acpi_ut_get_node_name(obj_desc->
								     buffer_field.
								     buffer_obj->
								     buffer.
								     node));
			}
			break;

		case ACPI_TYPE_LOCAL_REGION_FIELD:

			acpi_os_printf("Rgn [%4.4s]",
				       acpi_ut_get_node_name(obj_desc->
							     common_field.

acpi_status
acpi_ds_eval_table_region_operands(struct acpi_walk_state *walk_state,
				   union acpi_parse_object *op)
{
	acpi_status status;
	union acpi_operand_object *obj_desc;
	union acpi_operand_object **operand;
	struct acpi_namespace_node *node;
	union acpi_parse_object *next_op;
	u32 table_index;
	struct acpi_table_header *table;

	ACPI_FUNCTION_TRACE_PTR(ds_eval_table_region_operands, op);

	/*
	 * This is where we evaluate the signature_string and oem_iDString
	 * and oem_table_iDString of the data_table_region declaration
	 */
	node = op->common.node;

	/* next_op points to signature_string op */

	next_op = op->common.value.arg;

	/*
	 * Evaluate/create the signature_string and oem_iDString
	 * and oem_table_iDString operands
	 */
	status = acpi_ds_create_operands(walk_state, next_op);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/*
	 * Resolve the signature_string and oem_iDString
	 * and oem_table_iDString operands
	 */
	status = acpi_ex_resolve_operands(op->common.aml_opcode,
					  ACPI_WALK_OPERANDS, walk_state);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	operand = &walk_state->operands[0];

	/* Find the ACPI table */

	status = acpi_tb_find_table(operand[0]->string.pointer,
				    operand[1]->string.pointer,
				    operand[2]->string.pointer, &table_index);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	acpi_ut_remove_reference(operand[0]);
	acpi_ut_remove_reference(operand[1]);
	acpi_ut_remove_reference(operand[2]);

	status = acpi_get_table_by_index(table_index, &table);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	obj_desc = acpi_ns_get_attached_object(node);
	if (!obj_desc) {
		return_ACPI_STATUS(AE_NOT_EXIST);
	}

	obj_desc->region.address =
	    (acpi_physical_address) ACPI_TO_INTEGER(table);
	obj_desc->region.length = table->length;

	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
			  obj_desc,
			  ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address),
			  obj_desc->region.length));

	/* Now the address and length are valid for this opregion */

	obj_desc->region.flags |= AOPOBJ_DATA_VALID;

	return_ACPI_STATUS(status);
}

acpi_status
acpi_ds_eval_region_operands(struct acpi_walk_state *walk_state,
			     union acpi_parse_object *op)
{
	acpi_status status;
	union acpi_operand_object *obj_desc;
	union acpi_operand_object *operand_desc;
	struct acpi_namespace_node *node;
	union acpi_parse_object *next_op;

	ACPI_FUNCTION_TRACE_PTR(ds_eval_region_operands, op);

	/*
	 * This is where we evaluate the address and length fields of the
	 * op_region declaration
	 */
	node = op->common.node;

	/* next_op points to the op that holds the space_ID */

	next_op = op->common.value.arg;

	/* next_op points to address op */

	next_op = next_op->common.next;

	/* Evaluate/create the address and length operands */

	status = acpi_ds_create_operands(walk_state, next_op);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	/* Resolve the length and address operands to numbers */

	status = acpi_ex_resolve_operands(op->common.aml_opcode,
					  ACPI_WALK_OPERANDS, walk_state);
	if (ACPI_FAILURE(status)) {
		return_ACPI_STATUS(status);
	}

	obj_desc = acpi_ns_get_attached_object(node);
	if (!obj_desc) {
		return_ACPI_STATUS(AE_NOT_EXIST);
	}

	/*
	 * Get the length operand and save it
	 * (at Top of stack)
	 */
	operand_desc = walk_state->operands[walk_state->num_operands - 1];

	obj_desc->region.length = (u32) operand_desc->integer.value;
	acpi_ut_remove_reference(operand_desc);

	/*
	 * Get the address and save it
	 * (at top of stack - 1)
	 */
	operand_desc = walk_state->operands[walk_state->num_operands - 2];

	obj_desc->region.address = (acpi_physical_address)
	    operand_desc->integer.value;
	acpi_ut_remove_reference(operand_desc);

	ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
			  obj_desc,
			  ACPI_FORMAT_NATIVE_UINT(obj_desc->region.address),
			  obj_desc->region.length));

	/* Now the address and length are valid for this opregion */

	obj_desc->region.flags |= AOPOBJ_DATA_VALID;

	return_ACPI_STATUS(status);
}

//.........这里部分代码省略.........
    {
        /*
         * The request cannot be resolved by the current memory mapping;
         * Delete the existing mapping and create a new one.
         */
        if (MemInfo->MappedLength)
        {
            /* Valid mapping, delete it */

            AcpiOsUnmapMemory (MemInfo->MappedLogicalAddress,
                MemInfo->MappedLength);
        }

        /*
         * Don't attempt to map memory beyond the end of the region, and
         * constrain the maximum mapping size to something reasonable.
         */
        WindowSize = (ACPI_SIZE)
            ((MemInfo->Address + MemInfo->Length) - Address);

        if (WindowSize > ACPI_SYSMEM_REGION_WINDOW_SIZE)
        {
            WindowSize = ACPI_SYSMEM_REGION_WINDOW_SIZE;
        }

        /* Create a new mapping starting at the address given */

        MemInfo->MappedLogicalAddress = AcpiOsMapMemory (
            (ACPI_PHYSICAL_ADDRESS) Address, WindowSize);
        if (!MemInfo->MappedLogicalAddress)
        {
            ACPI_ERROR ((AE_INFO,
                "Could not map memory at %8.8X%8.8X, size %X",
                ACPI_FORMAT_NATIVE_UINT (Address), (UINT32) WindowSize));
            MemInfo->MappedLength = 0;
            return_ACPI_STATUS (AE_NO_MEMORY);
        }

        /* Save the physical address and mapping size */

        MemInfo->MappedPhysicalAddress = Address;
        MemInfo->MappedLength = WindowSize;
    }

    /*
     * Generate a logical pointer corresponding to the address we want to
     * access
     */
    LogicalAddrPtr = MemInfo->MappedLogicalAddress +
        ((ACPI_INTEGER) Address - (ACPI_INTEGER) MemInfo->MappedPhysicalAddress);

    ACPI_DEBUG_PRINT ((ACPI_DB_INFO,
        "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n",
        BitWidth, Function, ACPI_FORMAT_NATIVE_UINT (Address)));

    /*
     * Perform the memory read or write
     *
     * Note: For machines that do not support non-aligned transfers, the target
     * address was checked for alignment above.  We do not attempt to break the
     * transfer up into smaller (byte-size) chunks because the AML specifically
     * asked for a transfer width that the hardware may require.
     */
    switch (Function)
    {
    case ACPI_READ:

//.........这里部分代码省略.........
						  mem_info->
						  mapped_physical_address +
						  mem_info->mapped_length))) {
		/*
		 * The request cannot be resolved by the current memory mapping;
		 * Delete the existing mapping and create a new one.
		 */
		if (mem_info->mapped_length) {

			/* Valid mapping, delete it */

			acpi_os_unmap_memory(mem_info->mapped_logical_address,
					     mem_info->mapped_length);
		}

		/*
		 * Don't attempt to map memory beyond the end of the region, and
		 * constrain the maximum mapping size to something reasonable.
		 */
		window_size = (acpi_size)
		    ((mem_info->address + mem_info->length) - address);

		if (window_size > ACPI_SYSMEM_REGION_WINDOW_SIZE) {
			window_size = ACPI_SYSMEM_REGION_WINDOW_SIZE;
		}

		/* Create a new mapping starting at the address given */

		mem_info->mapped_logical_address =
			acpi_os_map_memory((acpi_physical_address) address, window_size);
		if (!mem_info->mapped_logical_address) {
			ACPI_ERROR((AE_INFO,
				    "Could not map memory at %8.8X%8.8X, size %X",
				    ACPI_FORMAT_NATIVE_UINT(address),
				    (u32) window_size));
			mem_info->mapped_length = 0;
			return_ACPI_STATUS(AE_NO_MEMORY);
		}

		/* Save the physical address and mapping size */

		mem_info->mapped_physical_address = address;
		mem_info->mapped_length = window_size;
	}

	/*
	 * Generate a logical pointer corresponding to the address we want to
	 * access
	 */
	logical_addr_ptr = mem_info->mapped_logical_address +
	    ((acpi_integer) address -
	     (acpi_integer) mem_info->mapped_physical_address);

	ACPI_DEBUG_PRINT((ACPI_DB_INFO,
			  "System-Memory (width %d) R/W %d Address=%8.8X%8.8X\n",
			  bit_width, function,
			  ACPI_FORMAT_NATIVE_UINT(address)));

	/*
	 * Perform the memory read or write
	 *
	 * Note: For machines that do not support non-aligned transfers, the target
	 * address was checked for alignment above.  We do not attempt to break the
	 * transfer up into smaller (byte-size) chunks because the AML specifically
	 * asked for a transfer width that the hardware may require.
	 */

ACPI_STATUS
AcpiDsEvalTableRegionOperands (
    ACPI_WALK_STATE         *WalkState,
    ACPI_PARSE_OBJECT       *Op)
{
    ACPI_STATUS             Status;
    ACPI_OPERAND_OBJECT     *ObjDesc;
    ACPI_OPERAND_OBJECT     **Operand;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_PARSE_OBJECT       *NextOp;
    UINT32                  TableIndex;
    ACPI_TABLE_HEADER       *Table;


    ACPI_FUNCTION_TRACE_PTR (DsEvalTableRegionOperands, Op);


    /*
     * This is where we evaluate the Signature string, OemId string,
     * and OemTableId string of the Data Table Region declaration
     */
    Node =  Op->Common.Node;

    /* NextOp points to Signature string op */

    NextOp = Op->Common.Value.Arg;

    /*
     * Evaluate/create the Signature string, OemId string,
     * and OemTableId string operands
     */
    Status = AcpiDsCreateOperands (WalkState, NextOp);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    /*
     * Resolve the Signature string, OemId string,
     * and OemTableId string operands
     */
    Status = AcpiExResolveOperands (Op->Common.AmlOpcode,
                                    ACPI_WALK_OPERANDS, WalkState);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    Operand = &WalkState->Operands[0];

    /* Find the ACPI table */

    Status = AcpiTbFindTable (Operand[0]->String.Pointer,
                              Operand[1]->String.Pointer, Operand[2]->String.Pointer,
                              &TableIndex);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    AcpiUtRemoveReference (Operand[0]);
    AcpiUtRemoveReference (Operand[1]);
    AcpiUtRemoveReference (Operand[2]);

    Status = AcpiGetTableByIndex (TableIndex, &Table);
    if (ACPI_FAILURE (Status))
    {
        return_ACPI_STATUS (Status);
    }

    ObjDesc = AcpiNsGetAttachedObject (Node);
    if (!ObjDesc)
    {
        return_ACPI_STATUS (AE_NOT_EXIST);
    }

    ObjDesc->Region.Address = (ACPI_PHYSICAL_ADDRESS) ACPI_TO_INTEGER (Table);
    ObjDesc->Region.Length = Table->Length;

    ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "RgnObj %p Addr %8.8X%8.8X Len %X\n",
                       ObjDesc,
                       ACPI_FORMAT_NATIVE_UINT (ObjDesc->Region.Address),
                       ObjDesc->Region.Length));

    /* Now the address and length are valid for this opregion */

    ObjDesc->Region.Flags |= AOPOBJ_DATA_VALID;

    return_ACPI_STATUS (Status);
}