Exemplo n.º 1
0
/* TODO: Change code to take advantage of driver model more */
static void acpi_os_derive_pci_id_2(acpi_handle rhandle,	/* upper bound  */
				    acpi_handle chandle,	/* current node */
				    struct acpi_pci_id **id,
				    int *is_bridge, u8 * bus_number)
{
	acpi_handle handle;
	struct acpi_pci_id *pci_id = *id;
	acpi_status status;
	unsigned long temp;
	acpi_object_type type;
	u8 tu8;

	acpi_get_parent(chandle, &handle);
	if (handle != rhandle) {
		acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge,
					bus_number);

		status = acpi_get_type(handle, &type);
		if ((ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE))
			return;

		status =
		    acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL,
					  &temp);
		if (ACPI_SUCCESS(status)) {
			pci_id->device = ACPI_HIWORD(ACPI_LODWORD(temp));
			pci_id->function = ACPI_LOWORD(ACPI_LODWORD(temp));

			if (*is_bridge)
				pci_id->bus = *bus_number;

			/* any nicer way to get bus number of bridge ? */
			status =
			    acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8,
							   8);
			if (ACPI_SUCCESS(status)
			    && ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) {
				status =
				    acpi_os_read_pci_configuration(pci_id, 0x18,
								   &tu8, 8);
				if (!ACPI_SUCCESS(status)) {
					/* Certainly broken...  FIX ME */
					return;
				}
				*is_bridge = 1;
				pci_id->bus = tu8;
				status =
				    acpi_os_read_pci_configuration(pci_id, 0x19,
								   &tu8, 8);
				if (ACPI_SUCCESS(status)) {
					*bus_number = tu8;
				}
			} else
				*is_bridge = 0;
		}
	}
}
Exemplo n.º 2
0
acpi_status
acpi_ev_pci_config_region_setup(acpi_handle handle,
				u32 function,
				void *handler_context, void **region_context)
{
	acpi_status status = AE_OK;
	acpi_integer pci_value;
	struct acpi_pci_id *pci_id = *region_context;
	union acpi_operand_object *handler_obj;
	struct acpi_namespace_node *parent_node;
	struct acpi_namespace_node *pci_root_node;
	union acpi_operand_object *region_obj =
	    (union acpi_operand_object *)handle;
	struct acpi_device_id object_hID;

	ACPI_FUNCTION_TRACE(ev_pci_config_region_setup);

	handler_obj = region_obj->region.handler;
	if (!handler_obj) {
		/*
		 * No installed handler. This shouldn't happen because the dispatch
		 * routine checks before we get here, but we check again just in case.
		 */
		ACPI_DEBUG_PRINT((ACPI_DB_OPREGION,
				  "Attempting to init a region %p, with no handler\n",
				  region_obj));
		return_ACPI_STATUS(AE_NOT_EXIST);
	}

	*region_context = NULL;
	if (function == ACPI_REGION_DEACTIVATE) {
		if (pci_id) {
			ACPI_FREE(pci_id);
		}
		return_ACPI_STATUS(status);
	}

	parent_node = acpi_ns_get_parent_node(region_obj->region.node);

	/*
	 * Get the _SEG and _BBN values from the device upon which the handler
	 * is installed.
	 *
	 * We need to get the _SEG and _BBN objects relative to the PCI BUS device.
	 * This is the device the handler has been registered to handle.
	 */

	/*
	 * If the address_space.Node is still pointing to the root, we need
	 * to scan upward for a PCI Root bridge and re-associate the op_region
	 * handlers with that device.
	 */
	if (handler_obj->address_space.node == acpi_gbl_root_node) {

		/* Start search from the parent object */

		pci_root_node = parent_node;
		while (pci_root_node != acpi_gbl_root_node) {
			status =
			    acpi_ut_execute_HID(pci_root_node, &object_hID);
			if (ACPI_SUCCESS(status)) {
				/*
				 * Got a valid _HID string, check if this is a PCI root.
				 * New for ACPI 3.0: check for a PCI Express root also.
				 */
				if (!
				    (ACPI_STRNCMP
				     (object_hID.value, PCI_ROOT_HID_STRING,
				      sizeof(PCI_ROOT_HID_STRING))
				     ||
				     !(ACPI_STRNCMP
				       (object_hID.value,
					PCI_EXPRESS_ROOT_HID_STRING,
					sizeof(PCI_EXPRESS_ROOT_HID_STRING)))))
				{

					/* Install a handler for this PCI root bridge */

					status =
					    acpi_install_address_space_handler((acpi_handle) pci_root_node, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
					if (ACPI_FAILURE(status)) {
						if (status == AE_SAME_HANDLER) {
							/*
							 * It is OK if the handler is already installed on the root
							 * bridge.  Still need to return a context object for the
							 * new PCI_Config operation region, however.
							 */
							status = AE_OK;
						} else {
							ACPI_EXCEPTION((AE_INFO,
									status,
									"Could not install PciConfig handler for Root Bridge %4.4s",
									acpi_ut_get_node_name
									(pci_root_node)));
						}
					}
					break;
				}
			}

			pci_root_node = acpi_ns_get_parent_node(pci_root_node);
		}

		/* PCI root bridge not found, use namespace root node */
	} else {
		pci_root_node = handler_obj->address_space.node;
	}

	/*
	 * If this region is now initialized, we are done.
	 * (install_address_space_handler could have initialized it)
	 */
	if (region_obj->region.flags & AOPOBJ_SETUP_COMPLETE) {
		return_ACPI_STATUS(AE_OK);
	}

	/* Region is still not initialized. Create a new context */

	pci_id = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_pci_id));
	if (!pci_id) {
		return_ACPI_STATUS(AE_NO_MEMORY);
	}

	/*
	 * For PCI_Config space access, we need the segment, bus,
	 * device and function numbers.  Acquire them here.
	 */

	/*
	 * Get the PCI device and function numbers from the _ADR object
	 * contained in the parent's scope.
	 */
	status =
	    acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, parent_node,
					    &pci_value);

	/*
	 * The default is zero, and since the allocation above zeroed
	 * the data, just do nothing on failure.
	 */
	if (ACPI_SUCCESS(status)) {
		pci_id->device = ACPI_HIWORD(ACPI_LODWORD(pci_value));
		pci_id->function = ACPI_LOWORD(ACPI_LODWORD(pci_value));
	}

	/* The PCI segment number comes from the _SEG method */

	status =
	    acpi_ut_evaluate_numeric_object(METHOD_NAME__SEG, pci_root_node,
					    &pci_value);
	if (ACPI_SUCCESS(status)) {
		pci_id->segment = ACPI_LOWORD(pci_value);
	}

	/* The PCI bus number comes from the _BBN method */

	status =
	    acpi_ut_evaluate_numeric_object(METHOD_NAME__BBN, pci_root_node,
					    &pci_value);
	if (ACPI_SUCCESS(status)) {
		pci_id->bus = ACPI_LOWORD(pci_value);
	}

	/* Complete this device's pci_id */

	acpi_os_derive_pci_id(pci_root_node, region_obj->region.node, &pci_id);

	*region_context = pci_id;
	return_ACPI_STATUS(AE_OK);
}
Exemplo n.º 3
0
static ACPI_STATUS
AcpiHwGetPciDeviceInfo (
    ACPI_PCI_ID             *PciId,
    ACPI_HANDLE             PciDevice,
    UINT16                  *BusNumber,
    BOOLEAN                 *IsBridge)
{
    ACPI_STATUS             Status;
    ACPI_OBJECT_TYPE        ObjectType;
    UINT64                  ReturnValue;
    UINT64                  PciValue;


    /* We only care about objects of type Device */

    Status = AcpiGetType (PciDevice, &ObjectType);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    if (ObjectType != ACPI_TYPE_DEVICE)
    {
        return (AE_OK);
    }

    /* We need an _ADR. Ignore device if not present */

    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR,
        PciDevice, &ReturnValue);
    if (ACPI_FAILURE (Status))
    {
        return (AE_OK);
    }

    /*
     * From _ADR, get the PCI Device and Function and
     * update the PCI ID.
     */
    PciId->Device = ACPI_HIWORD (ACPI_LODWORD (ReturnValue));
    PciId->Function = ACPI_LOWORD (ACPI_LODWORD (ReturnValue));

    /*
     * If the previous device was a bridge, use the previous
     * device bus number
     */
    if (*IsBridge)
    {
        PciId->Bus = *BusNumber;
    }

    /*
     * Get the bus numbers from PCI Config space:
     *
     * First, get the PCI HeaderType
     */
    *IsBridge = FALSE;
    Status = AcpiOsReadPciConfiguration (PciId,
        PCI_CFG_HEADER_TYPE_REG, &PciValue, 8);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    /* We only care about bridges (1=PciBridge, 2=CardBusBridge) */

    PciValue &= PCI_HEADER_TYPE_MASK;

    if ((PciValue != PCI_TYPE_BRIDGE) &&
        (PciValue != PCI_TYPE_CARDBUS_BRIDGE))
    {
        return (AE_OK);
    }

    /* Bridge: Get the Primary BusNumber */

    Status = AcpiOsReadPciConfiguration (PciId,
        PCI_CFG_PRIMARY_BUS_NUMBER_REG, &PciValue, 8);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    *IsBridge = TRUE;
    PciId->Bus = (UINT16) PciValue;

    /* Bridge: Get the Secondary BusNumber */

    Status = AcpiOsReadPciConfiguration (PciId,
        PCI_CFG_SECONDARY_BUS_NUMBER_REG, &PciValue, 8);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }

    *BusNumber = (UINT16) PciValue;
    return (AE_OK);
}
Exemplo n.º 4
0
ACPI_STATUS
AcpiEvPciConfigRegionSetup (
    ACPI_HANDLE             Handle,
    UINT32                  Function,
    void                    *HandlerContext,
    void                    **RegionContext)
{
    ACPI_STATUS             Status = AE_OK;
    UINT64                  PciValue;
    ACPI_PCI_ID             *PciId = *RegionContext;
    ACPI_OPERAND_OBJECT     *HandlerObj;
    ACPI_NAMESPACE_NODE     *ParentNode;
    ACPI_NAMESPACE_NODE     *PciRootNode;
    ACPI_NAMESPACE_NODE     *PciDeviceNode;
    ACPI_OPERAND_OBJECT     *RegionObj = (ACPI_OPERAND_OBJECT  *) Handle;


    ACPI_FUNCTION_TRACE (EvPciConfigRegionSetup);


    HandlerObj = RegionObj->Region.Handler;
    if (!HandlerObj)
    {
        /*
         * No installed handler. This shouldn't happen because the dispatch
         * routine checks before we get here, but we check again just in case.
         */
        ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
            "Attempting to init a region %p, with no handler\n", RegionObj));
        return_ACPI_STATUS (AE_NOT_EXIST);
    }

    *RegionContext = NULL;
    if (Function == ACPI_REGION_DEACTIVATE)
    {
        if (PciId)
        {
            ACPI_FREE (PciId);
        }
        return_ACPI_STATUS (Status);
    }

    ParentNode = RegionObj->Region.Node->Parent;

    /*
     * Get the _SEG and _BBN values from the device upon which the handler
     * is installed.
     *
     * We need to get the _SEG and _BBN objects relative to the PCI BUS device.
     * This is the device the handler has been registered to handle.
     */

    /*
     * If the AddressSpace.Node is still pointing to the root, we need
     * to scan upward for a PCI Root bridge and re-associate the OpRegion
     * handlers with that device.
     */
    if (HandlerObj->AddressSpace.Node == AcpiGbl_RootNode)
    {
        /* Start search from the parent object */

        PciRootNode = ParentNode;
        while (PciRootNode != AcpiGbl_RootNode)
        {
            /* Get the _HID/_CID in order to detect a RootBridge */

            if (AcpiEvIsPciRootBridge (PciRootNode))
            {
                /* Install a handler for this PCI root bridge */

                Status = AcpiInstallAddressSpaceHandler (
                    (ACPI_HANDLE) PciRootNode,
                    ACPI_ADR_SPACE_PCI_CONFIG,
                    ACPI_DEFAULT_HANDLER, NULL, NULL);
                if (ACPI_FAILURE (Status))
                {
                    if (Status == AE_SAME_HANDLER)
                    {
                        /*
                         * It is OK if the handler is already installed on the
                         * root bridge. Still need to return a context object
                         * for the new PCI_Config operation region, however.
                         */
                        Status = AE_OK;
                    }
                    else
                    {
                        ACPI_EXCEPTION ((AE_INFO, Status,
                            "Could not install PciConfig handler "
                            "for Root Bridge %4.4s",
                            AcpiUtGetNodeName (PciRootNode)));
                    }
                }
                break;
            }

            PciRootNode = PciRootNode->Parent;
        }

        /* PCI root bridge not found, use namespace root node */
    }
    else
    {
        PciRootNode = HandlerObj->AddressSpace.Node;
    }

    /*
     * If this region is now initialized, we are done.
     * (InstallAddressSpaceHandler could have initialized it)
     */
    if (RegionObj->Region.Flags & AOPOBJ_SETUP_COMPLETE)
    {
        return_ACPI_STATUS (AE_OK);
    }

    /* Region is still not initialized. Create a new context */

    PciId = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_PCI_ID));
    if (!PciId)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /*
     * For PCI_Config space access, we need the segment, bus, device and
     * function numbers. Acquire them here.
     *
     * Find the parent device object. (This allows the operation region to be
     * within a subscope under the device, such as a control method.)
     */
    PciDeviceNode = RegionObj->Region.Node;
    while (PciDeviceNode && (PciDeviceNode->Type != ACPI_TYPE_DEVICE))
    {
        PciDeviceNode = PciDeviceNode->Parent;
    }

    if (!PciDeviceNode)
    {
        ACPI_FREE (PciId);
        return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
    }

    /*
     * Get the PCI device and function numbers from the _ADR object
     * contained in the parent's scope.
     */
    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR,
        PciDeviceNode, &PciValue);

    /*
     * The default is zero, and since the allocation above zeroed the data,
     * just do nothing on failure.
     */
    if (ACPI_SUCCESS (Status))
    {
        PciId->Device   = ACPI_HIWORD (ACPI_LODWORD (PciValue));
        PciId->Function = ACPI_LOWORD (ACPI_LODWORD (PciValue));
    }

    /* The PCI segment number comes from the _SEG method */

    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG,
        PciRootNode, &PciValue);
    if (ACPI_SUCCESS (Status))
    {
        PciId->Segment = ACPI_LOWORD (PciValue);
    }

    /* The PCI bus number comes from the _BBN method */

    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN,
        PciRootNode, &PciValue);
    if (ACPI_SUCCESS (Status))
    {
        PciId->Bus = ACPI_LOWORD (PciValue);
    }

    /* Complete/update the PCI ID for this device */

    Status = AcpiHwDerivePciId (PciId, PciRootNode, RegionObj->Region.Node);
    if (ACPI_FAILURE (Status))
    {
        ACPI_FREE (PciId);
        return_ACPI_STATUS (Status);
    }

    *RegionContext = PciId;
    return_ACPI_STATUS (AE_OK);
}
Exemplo n.º 5
0
static acpi_status
acpi_hw_get_pci_device_info(struct acpi_pci_id *pci_id,
			    acpi_handle pci_device,
			    u16 *bus_number, u8 *is_bridge)
{
	acpi_status status;
	acpi_object_type object_type;
	u64 return_value;
	u64 pci_value;

	/* We only care about objects of type Device */

	status = acpi_get_type(pci_device, &object_type);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	if (object_type != ACPI_TYPE_DEVICE) {
		return (AE_OK);
	}

	/* We need an _ADR. Ignore device if not present */

	status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR,
						 pci_device, &return_value);
	if (ACPI_FAILURE(status)) {
		return (AE_OK);
	}

	/*
	 * From _ADR, get the PCI Device and Function and
	 * update the PCI ID.
	 */
	pci_id->device = ACPI_HIWORD(ACPI_LODWORD(return_value));
	pci_id->function = ACPI_LOWORD(ACPI_LODWORD(return_value));

	/*
	 * If the previous device was a bridge, use the previous
	 * device bus number
	 */
	if (*is_bridge) {
		pci_id->bus = *bus_number;
	}

	/*
	 * Get the bus numbers from PCI Config space:
	 *
	 * First, get the PCI header_type
	 */
	*is_bridge = FALSE;
	status = acpi_os_read_pci_configuration(pci_id,
						PCI_CFG_HEADER_TYPE_REG,
						&pci_value, 8);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	/* We only care about bridges (1=pci_bridge, 2=card_bus_bridge) */

	pci_value &= PCI_HEADER_TYPE_MASK;

	if ((pci_value != PCI_TYPE_BRIDGE) &&
	    (pci_value != PCI_TYPE_CARDBUS_BRIDGE)) {
		return (AE_OK);
	}

	/* Bridge: Get the Primary bus_number */

	status = acpi_os_read_pci_configuration(pci_id,
						PCI_CFG_PRIMARY_BUS_NUMBER_REG,
						&pci_value, 8);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	*is_bridge = TRUE;
	pci_id->bus = (u16)pci_value;

	/* Bridge: Get the Secondary bus_number */

	status = acpi_os_read_pci_configuration(pci_id,
						PCI_CFG_SECONDARY_BUS_NUMBER_REG,
						&pci_value, 8);
	if (ACPI_FAILURE(status)) {
		return (status);
	}

	*bus_number = (u16)pci_value;
	return (AE_OK);
}
Exemplo n.º 6
0
ACPI_STATUS
AcpiEvPciConfigRegionSetup (
    ACPI_HANDLE             Handle,
    UINT32                  Function,
    void                    *HandlerContext,
    void                    **RegionContext)
{
    ACPI_STATUS             Status = AE_OK;
    ACPI_INTEGER            Temp;
    ACPI_PCI_ID             *PciId = *RegionContext;
    ACPI_OPERAND_OBJECT     *HandlerObj;
    ACPI_NAMESPACE_NODE     *Node;
    ACPI_OPERAND_OBJECT     *RegionObj = (ACPI_OPERAND_OBJECT  *) Handle;
    ACPI_DEVICE_ID          ObjectHID;


    ACPI_FUNCTION_TRACE ("EvPciConfigRegionSetup");


    HandlerObj = RegionObj->Region.AddrHandler;
    if (!HandlerObj)
    {
        /*
         * No installed handler. This shouldn't happen because the dispatch
         * routine checks before we get here, but we check again just in case.
         */
        ACPI_DEBUG_PRINT ((ACPI_DB_OPREGION,
            "Attempting to init a region %p, with no handler\n", RegionObj));
        return_ACPI_STATUS (AE_NOT_EXIST);
    }

    if (Function == ACPI_REGION_DEACTIVATE)
    {
        if (PciId)
        {
            ACPI_MEM_FREE (PciId);
            *RegionContext = NULL;
        }

        return_ACPI_STATUS (Status);
    }

    /* Create a new context */

    PciId = ACPI_MEM_CALLOCATE (sizeof (ACPI_PCI_ID));
    if (!PciId)
    {
        return_ACPI_STATUS (AE_NO_MEMORY);
    }

    /*
     * For PCI Config space access, we have to pass the segment, bus,
     * device and function numbers.  This routine must acquire those.
     */

    /*
     * First get device and function numbers from the _ADR object
     * in the parent's scope.
     */
    Node = AcpiNsGetParentNode (RegionObj->Region.Node);

    /* Evaluate the _ADR object */

    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__ADR, Node, &Temp);

    /*
     * The default is zero, and since the allocation above zeroed
     * the data, just do nothing on failure.
     */
    if (ACPI_SUCCESS (Status))
    {
        PciId->Device   = ACPI_HIWORD (ACPI_LODWORD (Temp));
        PciId->Function = ACPI_LOWORD (ACPI_LODWORD (Temp));
    }

    /*
     * Get the _SEG and _BBN values from the device upon which the handler
     * is installed.
     *
     * We need to get the _SEG and _BBN objects relative to the PCI BUS device.
     * This is the device the handler has been registered to handle.
     */

    /*
     * If the AddrHandler.Node is still pointing to the root, we need
     * to scan upward for a PCI Root bridge and re-associate the OpRegion
     * handlers with that device.
     */
    if (HandlerObj->AddrHandler.Node == AcpiGbl_RootNode)
    {
        /*
         * Node is currently the parent object
         */
        while (Node != AcpiGbl_RootNode)
        {
            Status = AcpiUtExecute_HID (Node, &ObjectHID);
            if (ACPI_SUCCESS (Status))
            {
                /* Got a valid _HID, check if this is a PCI root */

                if (!(ACPI_STRNCMP (ObjectHID.Buffer, PCI_ROOT_HID_STRING,
                                    sizeof (PCI_ROOT_HID_STRING))))
                {
                    /* Install a handler for this PCI root bridge */

                    Status = AcpiInstallAddressSpaceHandler ((ACPI_HANDLE) Node,
                                        ACPI_ADR_SPACE_PCI_CONFIG,
                                        ACPI_DEFAULT_HANDLER, NULL, NULL);
                    if (ACPI_FAILURE (Status))
                    {
                        ACPI_REPORT_ERROR (("Could not install PciConfig handler for %4.4s, %s\n",
                            Node->Name.Ascii, AcpiFormatException (Status)));
                    }
                    break;
                }
            }

            Node = AcpiNsGetParentNode (Node);
        }
    }
    else
    {
        Node = HandlerObj->AddrHandler.Node;
    }

    /*
     * The PCI segment number comes from the _SEG method
     */
    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__SEG, Node, &Temp);
    if (ACPI_SUCCESS (Status))
    {
        PciId->Segment = ACPI_LOWORD (Temp);
    }

    /*
     * The PCI bus number comes from the _BBN method
     */
    Status = AcpiUtEvaluateNumericObject (METHOD_NAME__BBN, Node, &Temp);
    if (ACPI_SUCCESS (Status))
    {
        PciId->Bus = ACPI_LOWORD (Temp);
    }

    /*
     * Complete this device's PciId
     */
    AcpiOsDerivePciId (Node, RegionObj->Region.Node, &PciId);

    *RegionContext = PciId;
    return_ACPI_STATUS (AE_OK);
}