mirror of https://github.com/acidanthera/audk.git
456 lines
16 KiB
C
456 lines
16 KiB
C
/** @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 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
|
|
**/
|
|
|
|
#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_SUCCESS The protocol was added to ChildHandle.
|
|
@retval EFI_INVALID_PARAMETER ChildHandle is NULL.
|
|
@retval EFI_OUT_OF_RESOURCES There are not enough resources available 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_SUCCESS 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 failed 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;
|
|
}
|