diff options
Diffstat (limited to 'MdeModulePkg/Bus/Isa/IsaBusDxe/IsaBusDxe.c')
| -rw-r--r-- | MdeModulePkg/Bus/Isa/IsaBusDxe/IsaBusDxe.c | 461 |
1 files changed, 461 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Isa/IsaBusDxe/IsaBusDxe.c b/MdeModulePkg/Bus/Isa/IsaBusDxe/IsaBusDxe.c new file mode 100644 index 0000000000..7067c6e6f0 --- /dev/null +++ b/MdeModulePkg/Bus/Isa/IsaBusDxe/IsaBusDxe.c @@ -0,0 +1,461 @@ +/** @file
+ This file consumes the ISA Host Controller protocol produced by the ISA Host
+ Controller and installs the ISA Host Controller Service Binding protocol
+ on the ISA Host Controller's handle.
+
+ Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+
+**/
+
+#include "IsaBusDxe.h"
+#include "ComponentName.h"
+
+/**
+ Tests to see if this driver supports a given controller. 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. For bus drivers, if this parameter is not NULL, then
+ the bus driver must determine if the bus controller specified
+ by ControllerHandle and the child controller specified
+ by RemainingDevicePath are both supported by this
+ bus driver.
+
+ @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 access.
+ Currently not implemented.
+ @retval EFI_UNSUPPORTED The device specified by ControllerHandle and
+ RemainingDevicePath is not supported by the driver specified by This.
+**/
+EFI_STATUS
+EFIAPI
+IsaBusDriverBindingSupported (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ VOID *Instance;
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiIsaHcProtocolGuid,
+ &Instance,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (!EFI_ERROR (Status)) {
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiIsaHcProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ }
+
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ &Instance,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (!EFI_ERROR (Status)) {
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ }
+
+ return Status;
+}
+
+ISA_BUS_CHILD_PRIVATE_DATA mIsaBusChildPrivateTemplate = {
+ ISA_BUS_CHILD_PRIVATE_DATA_SIGNATURE,
+ FALSE
+};
+
+/**
+ 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
+EFIAPI
+IsaBusCreateChild (
+ IN EFI_SERVICE_BINDING_PROTOCOL *This,
+ IN OUT EFI_HANDLE *ChildHandle
+ )
+{
+ EFI_STATUS Status;
+ ISA_BUS_PRIVATE_DATA *Private;
+ EFI_ISA_HC_PROTOCOL *IsaHc;
+ ISA_BUS_CHILD_PRIVATE_DATA *Child;
+
+ Private = ISA_BUS_PRIVATE_DATA_FROM_THIS (This);
+
+ Child = AllocateCopyPool (sizeof (mIsaBusChildPrivateTemplate), &mIsaBusChildPrivateTemplate);
+ if (Child == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ ChildHandle,
+ &gEfiIsaHcProtocolGuid, Private->IsaHc,
+ &gEfiCallerIdGuid, Child,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (Child);
+ return Status;
+ }
+
+ return gBS->OpenProtocol (
+ Private->IsaHcHandle,
+ &gEfiIsaHcProtocolGuid,
+ (VOID **) &IsaHc,
+ gIsaBusDriverBinding.DriverBindingHandle,
+ *ChildHandle,
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+ );
+}
+
+/**
+ 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 This Pointer to the EFI_SERVICE_BINDING_PROTOCOL instance.
+ @param ChildHandle Handle of the child to destroy
+
+ @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 NULL.
+ @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
+EFIAPI
+IsaBusDestroyChild (
+ IN EFI_SERVICE_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE ChildHandle
+ )
+{
+ EFI_STATUS Status;
+ ISA_BUS_PRIVATE_DATA *Private;
+ EFI_ISA_HC_PROTOCOL *IsaHc;
+ ISA_BUS_CHILD_PRIVATE_DATA *Child;
+
+ Private = ISA_BUS_PRIVATE_DATA_FROM_THIS (This);
+
+ Status = gBS->OpenProtocol (
+ ChildHandle,
+ &gEfiCallerIdGuid,
+ (VOID **) &Child,
+ gIsaBusDriverBinding.DriverBindingHandle,
+ ChildHandle,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ ASSERT (Child->Signature == ISA_BUS_CHILD_PRIVATE_DATA_SIGNATURE);
+
+ if (Child->InDestroying) {
+ return EFI_SUCCESS;
+ }
+
+ Child->InDestroying = TRUE;
+ Status = gBS->CloseProtocol (
+ Private->IsaHcHandle,
+ &gEfiIsaHcProtocolGuid,
+ gIsaBusDriverBinding.DriverBindingHandle,
+ ChildHandle
+ );
+ ASSERT_EFI_ERROR (Status);
+ if (!EFI_ERROR (Status)) {
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ ChildHandle,
+ &gEfiIsaHcProtocolGuid, Private->IsaHc,
+ &gEfiCallerIdGuid, Child,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ gBS->OpenProtocol (
+ Private->IsaHcHandle,
+ &gEfiIsaHcProtocolGuid,
+ (VOID **) &IsaHc,
+ gIsaBusDriverBinding.DriverBindingHandle,
+ ChildHandle,
+ EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
+ );
+ }
+ }
+
+ if (EFI_ERROR (Status)) {
+ Child->InDestroying = FALSE;
+ } else {
+ FreePool (Child);
+ }
+
+ return Status;
+}
+
+ISA_BUS_PRIVATE_DATA mIsaBusPrivateTemplate = {
+ ISA_BUS_PRIVATE_DATA_SIGNATURE,
+ {
+ IsaBusCreateChild,
+ IsaBusDestroyChild
+ }
+};
+
+/**
+ Starts a device controller or a bus controller.
+
+ @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. For a bus driver, if this parameter is NULL, then handles
+ for all the children of Controller are created by this driver.
+ If this parameter is not NULL and the first Device Path Node is
+ not the End of Device Path Node, then only the handle for the
+ child device specified by the first Device Path Node of
+ RemainingDevicePath is created by this driver.
+ If the first Device Path Node of RemainingDevicePath is
+ the End of Device Path Node, no child handle is created by this
+ driver.
+
+ @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
+EFIAPI
+IsaBusDriverBindingStart (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
+ )
+{
+ EFI_STATUS Status;
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ ISA_BUS_PRIVATE_DATA *Private;
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiIsaHcProtocolGuid,
+ (VOID **) &mIsaBusPrivateTemplate.IsaHc,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ (VOID **) &DevicePath,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_BY_DRIVER
+ );
+ if (EFI_ERROR (Status)) {
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiIsaHcProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ return Status;
+ }
+
+ Private = AllocateCopyPool (sizeof (mIsaBusPrivateTemplate), &mIsaBusPrivateTemplate);
+ ASSERT (Private != NULL);
+
+ Private->IsaHcHandle = Controller;
+
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &Controller,
+ &gEfiIsaHcServiceBindingProtocolGuid, &Private->ServiceBinding,
+ NULL
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return Status;
+}
+
+/**
+ Stops a device controller or a bus controller.
+
+ @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.
+ @param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
+ if NumberOfChildren is 0.
+
+ @retval EFI_SUCCESS The device was stopped.
+ @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
+
+**/
+EFI_STATUS
+EFIAPI
+IsaBusDriverBindingStop (
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,
+ IN EFI_HANDLE Controller,
+ IN UINTN NumberOfChildren,
+ IN EFI_HANDLE *ChildHandleBuffer
+ )
+{
+ EFI_STATUS Status;
+ EFI_SERVICE_BINDING_PROTOCOL *ServiceBinding;
+ ISA_BUS_PRIVATE_DATA *Private;
+ UINTN Index;
+ BOOLEAN AllChildrenStopped;
+
+ Status = gBS->OpenProtocol (
+ Controller,
+ &gEfiIsaHcServiceBindingProtocolGuid,
+ (VOID **) &ServiceBinding,
+ This->DriverBindingHandle,
+ Controller,
+ EFI_OPEN_PROTOCOL_GET_PROTOCOL
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Private = ISA_BUS_PRIVATE_DATA_FROM_THIS (ServiceBinding);
+
+ if (NumberOfChildren == 0) {
+ Status = gBS->UninstallMultipleProtocolInterfaces (
+ Controller,
+ &gEfiIsaHcServiceBindingProtocolGuid, &Private->ServiceBinding,
+ NULL
+ );
+ if (!EFI_ERROR (Status)) {
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiDevicePathProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ gBS->CloseProtocol (
+ Controller,
+ &gEfiIsaHcProtocolGuid,
+ This->DriverBindingHandle,
+ Controller
+ );
+ FreePool (Private);
+ }
+
+ return Status;
+ }
+
+ AllChildrenStopped = TRUE;
+ for (Index = 0; Index < NumberOfChildren; Index++) {
+ Status = ServiceBinding->DestroyChild (ServiceBinding, ChildHandleBuffer[Index]);
+ if (EFI_ERROR (Status)) {
+ AllChildrenStopped = FALSE;
+ }
+ }
+
+ return AllChildrenStopped ? EFI_SUCCESS : EFI_DEVICE_ERROR;
+}
+
+//
+// ISA Bus Driver Binding Protocol Instance
+//
+EFI_DRIVER_BINDING_PROTOCOL gIsaBusDriverBinding = {
+ IsaBusDriverBindingSupported,
+ IsaBusDriverBindingStart,
+ IsaBusDriverBindingStop,
+ 0x10,
+ NULL,
+ NULL
+};
+
+/**
+ Entry point of the IsaBusDxe driver.
+
+ @param[in] ImageHandle The firmware allocated handle for the EFI image.
+ @param[in] SystemTable A pointer to the EFI System Table.
+
+ @retval EFI_SUCCESS The entry point is executed successfully.
+ @retval other Some error occurs when executing this entry point.
+**/
+EFI_STATUS
+EFIAPI
+InitializeIsaBus (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+
+ Status = EfiLibInstallDriverBindingComponentName2 (
+ ImageHandle,
+ SystemTable,
+ &gIsaBusDriverBinding,
+ ImageHandle,
+ &gIsaBusComponentName,
+ &gIsaBusComponentName2
+ );
+ ASSERT_EFI_ERROR (Status);
+ return Status;
+}
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