diff options
Diffstat (limited to 'MdeModulePkg/Universal/Network/ArpDxe/ArpDriver.c')
| -rw-r--r-- | MdeModulePkg/Universal/Network/ArpDxe/ArpDriver.c | 195 |
1 files changed, 119 insertions, 76 deletions
diff --git a/MdeModulePkg/Universal/Network/ArpDxe/ArpDriver.c b/MdeModulePkg/Universal/Network/ArpDxe/ArpDriver.c index e946549..63c7639 100644 --- a/MdeModulePkg/Universal/Network/ArpDxe/ArpDriver.c +++ b/MdeModulePkg/Universal/Network/ArpDxe/ArpDriver.c @@ -1,5 +1,5 @@ /** @file
- Abstract:
+ ARP driver functions.
Copyright (c) 2006 - 2008, Intel Corporation.<BR>
All rights reserved. This program and the accompanying materials
@@ -28,13 +28,16 @@ EFI_DRIVER_BINDING_PROTOCOL gArpDriverBinding = { /**
Create and initialize the arp service context data.
- @param[in] ImageHandle The image handle representing the loaded driver
+ @param[in] ImageHandle The image handle representing the loaded driver
image.
- @param[in] ControllerHandle The controller handle the driver binds to.
- @param[in] ArpService Pointer to the buffer containing the arp service
+ @param[in] ControllerHandle The controller handle the driver binds to.
+ @param[in, out] ArpService Pointer to the buffer containing the arp service
context data.
@retval EFI_SUCCESS The arp service context is initialized.
+
+ @retval EFI_UNSUPPORTED The underlayer Snp mode type is not ethernet.
+ Failed to initialize the service context.
@retval other Failed to initialize the arp service context.
**/
@@ -42,7 +45,7 @@ EFI_STATUS ArpCreateService (
IN EFI_HANDLE ImageHandle,
IN EFI_HANDLE ControllerHandle,
- IN ARP_SERVICE_DATA *ArpService
+ IN OUT ARP_SERVICE_DATA *ArpService
)
{
EFI_STATUS Status;
@@ -186,7 +189,7 @@ ERROR_EXIT: /**
Clean the arp service context data.
- @param[in] ArpService Pointer to the buffer containing the arp service
+ @param[in, out] ArpService Pointer to the buffer containing the arp service
context data.
@return None.
@@ -194,7 +197,7 @@ ERROR_EXIT: **/
VOID
ArpCleanService (
- IN ARP_SERVICE_DATA *ArpService
+ IN OUT ARP_SERVICE_DATA *ArpService
)
{
NET_CHECK_SIGNATURE (ArpService, ARP_SERVICE_DATA_SIGNATURE);
@@ -242,22 +245,32 @@ ArpCleanService ( }
/**
- Test to see if this driver supports ControllerHandle.
-
- This service is called by the EFI boot service ConnectController(). In
- order to make drivers as small as possible, there are a few calling
- restrictions for this service. ConnectController() must
- follow these calling restrictions. If any other agent wishes to call
- Supported() it must also follow these calling restrictions.
+ Tests to see if this driver supports a given controller.
- @param[in] This Protocol instance pointer.
- @param[in] ControllerHandle Handle of device to test.
- @param[in] RemainingDevicePath Optional parameter use to pick a specific child
- device to start.
-
- @retval EFI_SUCCES This driver supports this device
- @retval EFI_ALREADY_STARTED This driver is already running on this device.
- @retval other This driver does not support this device.
+ If a child device is provided, it further tests to see if this driver supports
+ creating a handle for the specified child device.
+
+ @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
+ @param[in] ControllerHandle The handle of the controller to test. This handle
+ must support a protocol interface that supplies
+ an I/O abstraction to the driver.
+ @param[in] RemainingDevicePath A pointer to the remaining portion of a device path.
+ This parameter is ignored by device drivers,
+ and is optional for bus drivers.
+
+ @retval EFI_SUCCESS The device specified by ControllerHandle and
+ RemainingDevicePath is supported by the driver
+ specified by This.
+ @retval EFI_ALREADY_STARTED The device specified by ControllerHandle and
+ RemainingDevicePath is already being managed
+ by the driver specified by This.
+ @retval EFI_ACCESS_DENIED The device specified by ControllerHandle and
+ RemainingDevicePath is already being managed by
+ a different driver or an application that
+ requires exclusive acces. Currently not implemented.
+ @retval EFI_UNSUPPORTED The device specified by ControllerHandle and
+ RemainingDevicePath is not supported by the
+ driver specified by This.
**/
EFI_STATUS
@@ -302,22 +315,34 @@ ArpDriverBindingSupported ( /**
- Start this driver on ControllerHandle.
+ Start this driver on ControllerHandle.
- This service is called by the EFI boot service ConnectController(). In order to make
- drivers as small as possible, there are a few calling restrictions for
- this service. ConnectController() must follow these
- calling restrictions. If any other agent wishes to call Start() it
- must also follow these calling restrictions.
-
- @param[in] This Protocol instance pointer.
- @param[in] ControllerHandle Handle of device to bind driver to.
- @param[in] RemainingDevicePath Optional parameter use to pick a specific child
- device to start.
-
- @retval EFI_SUCCES This driver is added to ControllerHandle.
- @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle.
- @retval other This driver does not support this device.
+ The Start() function is designed to be invoked from the EFI boot service ConnectController().
+ As a result, much of the error checking on the parameters to Start() has been
+ moved into this common boot service. It is legal to call Start() from other locations,
+ but the following calling restrictions must be followed or the system behavior
+ will not be deterministic.
+ 1. ControllerHandle must be a valid EFI_HANDLE.
+ 2. If RemainingDevicePath is not NULL, then it must be a pointer to a naturally
+ aligned EFI_DEVICE_PATH_PROTOCOL.
+ 3. Prior to calling Start(), the Supported() function for the driver specified
+ by This must have been called with the same calling parameters, and Supported()
+ must have returned EFI_SUCCESS.
+
+ @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
+ @param[in] ControllerHandle The handle of the controller to start. This handle
+ must support a protocol interface that supplies
+ an I/O abstraction to the driver.
+ @param[in] RemainingDevicePath A pointer to the remaining portion of a device path.
+ This parameter is ignored by device drivers,
+ and is optional for bus drivers.
+
+ @retval EFI_SUCCESS The device was started.
+ @retval EFI_DEVICE_ERROR The device could not be started due to a device error.
+ Currently not implemented.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of
+ resources.
+ @retval Others The driver failded to start the device.
**/
EFI_STATUS
@@ -383,22 +408,32 @@ ERROR: /**
- Stop this driver on ControllerHandle.
+ Stop this driver on ControllerHandle.
- This service is called by the EFI boot service DisconnectController(). In order to
- make drivers as small as possible, there are a few calling
- restrictions for this service. DisconnectController()
- must follow these calling restrictions. If any other agent wishes
- to call Stop() it must also follow these calling restrictions.
+ Release the control of this controller and remove the IScsi functions. The Stop()
+ function is designed to be invoked from the EFI boot service DisconnectController().
+ As a result, much of the error checking on the parameters to Stop() has been moved
+ into this common boot service. It is legal to call Stop() from other locations,
+ but the following calling restrictions must be followed or the system behavior
+ will not be deterministic.
+ 1. ControllerHandle must be a valid EFI_HANDLE that was used on a previous call to this
+ same driver's Start() function.
+ 2. The first NumberOfChildren handles of ChildHandleBuffer must all be a valid
+ EFI_HANDLE. In addition, all of these handles must have been created in this driver's
+ Start() function, and the Start() function must have called OpenProtocol() on
+ ControllerHandle with an Attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.
- @param[in] This Protocol instance pointer.
- @param[in] ControllerHandle Handle of device to stop driver on
- @param[in] NumberOfChildren Number of Handles in ChildHandleBuffer. If number
- of children is zero stop the entire bus driver.
- @param[in] ChildHandleBuffer List of Child Handles to Stop.
-
- @retval EFI_SUCCES This driver is removed ControllerHandle
- @retval other This driver was not removed from this device
+ @param[in] This A pointer to the EFI_DRIVER_BINDING_PROTOCOL instance.
+ @param[in] ControllerHandle A handle to the device being stopped. The handle must
+ support a bus specific I/O protocol for the driver
+ to use to stop the device.
+ @param[in] NumberOfChildren The number of child device handles in ChildHandleBuffer.
+ Not used.
+ @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
+ if NumberOfChildren is 0.Not used.
+
+ @retval EFI_SUCCESS The device was stopped.
+ @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
**/
EFI_STATUS
@@ -476,19 +511,23 @@ ArpDriverBindingStop ( }
/**
- Creates a child handle with a set of I/O services.
-
- @param[in] This Protocol instance pointer.
- @param[in] ChildHandle Pointer to the handle of the child to create. If
- it is NULL, then a new handle is created. If it is
- not NULL, then the I/O services are added to the
- existing child handle.
-
- @retval EFI_SUCCES The child handle was created with the I/O
- services.
- @retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create
- the child.
- @retval other The child handle was not created.
+ Creates a child handle and installs a protocol.
+
+ The CreateChild() function installs a protocol on ChildHandle.
+ If ChildHandle is a pointer to NULL, then a new handle is created and returned
+ in ChildHandle. If ChildHandle is not a pointer to NULL, then the protocol
+ installs on the existing ChildHandle.
+
+ @param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
+ @param ChildHandle Pointer to the handle of the child to create. If it is NULL,
+ then a new handle is created. If it is a pointer to an existing
+ UEFI handle, then the protocol is added to the existing UEFI handle.
+
+ @retval EFI_SUCCES The protocol was added to ChildHandle.
+ @retval EFI_INVALID_PARAMETER ChildHandle is NULL.
+ @retval EFI_OUT_OF_RESOURCES There are not enough resources availabe to create
+ the child
+ @retval other The child handle was not created
**/
EFI_STATUS
@@ -600,19 +639,22 @@ ERROR: /**
- Destroys a child handle with a set of I/O services.
+ Destroys a child handle with a protocol installed on it.
+
+ The DestroyChild() function does the opposite of CreateChild(). It removes a protocol
+ that was installed by CreateChild() from ChildHandle. If the removed protocol is the
+ last protocol on ChildHandle, then ChildHandle is destroyed.
- @param[in] This Protocol instance pointer.
- @param[in] ChildHandle Handle of the child to destroy.
+ @param This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
+ @param ChildHandle Handle of the child to destroy
- @retval EFI_SUCCES The I/O services were removed from the child
- handle.
- @retval EFI_UNSUPPORTED The child handle does not support the I/O services
- that are being removed.
- @retval EFI_INVALID_PARAMETER Child handle is not a valid EFI Handle.
- @retval EFI_ACCESS_DENIED The child handle could not be destroyed because
- its I/O services are being used.
- @retval other The child handle was not destroyed.
+ @retval EFI_SUCCES The protocol was removed from ChildHandle.
+ @retval EFI_UNSUPPORTED ChildHandle does not support the protocol that is
+ being removed.
+ @retval EFI_INVALID_PARAMETER Child handle is not a valid UEFI Handle.
+ @retval EFI_ACCESS_DENIED The protocol could not be removed from the ChildHandle
+ because its services are being used.
+ @retval other The child handle was not destroyed
**/
EFI_STATUS
@@ -721,7 +763,8 @@ ArpServiceBindingDestroyChild ( @param[in] ImageHandle The image handle of the driver.
@param[in] SystemTable The system table.
- @retval EFI_SUCCES if the driver binding and component name protocols are successfully
+ @retval EFI_SUCCESS if the driver binding and component name protocols
+ are successfully
@retval Others Failed to install the protocols.
**/
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