/** @file | |
UfsHcDxe driver is used to provide platform-dependent info, mainly UFS host controller | |
MMIO base, to upper layer UFS drivers. | |
Copyright (c) 2014 - 2018, Intel Corporation. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include "UfsPciHcDxe.h" | |
// | |
// NVM Express Driver Binding Protocol Instance | |
// | |
EFI_DRIVER_BINDING_PROTOCOL gUfsHcDriverBinding = { | |
UfsHcDriverBindingSupported, | |
UfsHcDriverBindingStart, | |
UfsHcDriverBindingStop, | |
0x10, | |
NULL, | |
NULL | |
}; | |
// | |
// Template for Ufs host controller private data. | |
// | |
UFS_HOST_CONTROLLER_PRIVATE_DATA gUfsHcTemplate = { | |
UFS_HC_PRIVATE_DATA_SIGNATURE, // Signature | |
{ // UfsHcProtocol | |
UfsHcGetMmioBar, | |
UfsHcAllocateBuffer, | |
UfsHcFreeBuffer, | |
UfsHcMap, | |
UfsHcUnmap, | |
UfsHcFlush, | |
UfsHcMmioRead, | |
UfsHcMmioWrite | |
}, | |
NULL, // PciIo | |
0, // BarIndex | |
0 // PciAttributes | |
}; | |
/** | |
Get the MMIO base of the UFS host controller. | |
@param[in] This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance. | |
@param[out] MmioBar The MMIO base address of UFS host controller. | |
@retval EFI_SUCCESS The operation succeeds. | |
@retval others The operation fails. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcGetMmioBar ( | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This, | |
OUT UINTN *MmioBar | |
) | |
{ | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
EFI_STATUS Status; | |
UINT8 BarIndex; | |
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BarDesc; | |
if ((This == NULL) || (MmioBar == NULL)) { | |
return EFI_INVALID_PARAMETER; | |
} | |
BarDesc = NULL; | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This); | |
PciIo = Private->PciIo; | |
BarIndex = Private->BarIndex; | |
Status = PciIo->GetBarAttributes ( | |
PciIo, | |
BarIndex, | |
NULL, | |
(VOID **)&BarDesc | |
); | |
if (EFI_ERROR (Status)) { | |
return Status; | |
} | |
*MmioBar = (UINTN)BarDesc->AddrRangeMin; | |
FreePool (BarDesc); | |
return Status; | |
} | |
/** | |
Provides the UFS controller-specific addresses needed to access system memory. | |
@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance. | |
@param Operation Indicates if the bus master is going to read or write to system memory. | |
@param HostAddress The system memory address to map to the UFS controller. | |
@param NumberOfBytes On input the number of bytes to map. On output the number of bytes | |
that were mapped. | |
@param DeviceAddress The resulting map address for the bus master UFS controller to use to | |
access the hosts HostAddress. | |
@param Mapping A resulting value to pass to Unmap(). | |
@retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes. | |
@retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer. | |
@retval EFI_INVALID_PARAMETER One or more parameters are invalid. | |
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. | |
@retval EFI_DEVICE_ERROR The system hardware could not map the requested address. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcMap ( | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This, | |
IN EDKII_UFS_HOST_CONTROLLER_OPERATION Operation, | |
IN VOID *HostAddress, | |
IN OUT UINTN *NumberOfBytes, | |
OUT EFI_PHYSICAL_ADDRESS *DeviceAddress, | |
OUT VOID **Mapping | |
) | |
{ | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
EFI_STATUS Status; | |
if ((This == NULL) || (HostAddress == NULL) || (NumberOfBytes == NULL) || (DeviceAddress == NULL) || (Mapping == NULL)) { | |
return EFI_INVALID_PARAMETER; | |
} | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This); | |
PciIo = Private->PciIo; | |
Status = PciIo->Map (PciIo, (EFI_PCI_IO_PROTOCOL_OPERATION)Operation, HostAddress, NumberOfBytes, DeviceAddress, Mapping); | |
return Status; | |
} | |
/** | |
Completes the Map() operation and releases any corresponding resources. | |
@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance. | |
@param Mapping The mapping value returned from Map(). | |
@retval EFI_SUCCESS The range was unmapped. | |
@retval EFI_DEVICE_ERROR The data was not committed to the target system memory. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcUnmap ( | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This, | |
IN VOID *Mapping | |
) | |
{ | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
EFI_STATUS Status; | |
if ((This == NULL) || (Mapping == NULL)) { | |
return EFI_INVALID_PARAMETER; | |
} | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This); | |
PciIo = Private->PciIo; | |
Status = PciIo->Unmap (PciIo, Mapping); | |
return Status; | |
} | |
/** | |
Allocates pages that are suitable for an EfiUfsHcOperationBusMasterCommonBuffer | |
mapping. | |
@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance. | |
@param Type This parameter is not used and must be ignored. | |
@param MemoryType The type of memory to allocate, EfiBootServicesData or | |
EfiRuntimeServicesData. | |
@param Pages The number of pages to allocate. | |
@param HostAddress A pointer to store the base system memory address of the | |
allocated range. | |
@param Attributes The requested bit mask of attributes for the allocated range. | |
@retval EFI_SUCCESS The requested memory pages were allocated. | |
@retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are | |
MEMORY_WRITE_COMBINE and MEMORY_CACHED. | |
@retval EFI_INVALID_PARAMETER One or more parameters are invalid. | |
@retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcAllocateBuffer ( | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This, | |
IN EFI_ALLOCATE_TYPE Type, | |
IN EFI_MEMORY_TYPE MemoryType, | |
IN UINTN Pages, | |
OUT VOID **HostAddress, | |
IN UINT64 Attributes | |
) | |
{ | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
EFI_STATUS Status; | |
if ((This == NULL) || (HostAddress == NULL)) { | |
return EFI_INVALID_PARAMETER; | |
} | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This); | |
PciIo = Private->PciIo; | |
Status = PciIo->AllocateBuffer (PciIo, Type, MemoryType, Pages, HostAddress, Attributes); | |
return Status; | |
} | |
/** | |
Frees memory that was allocated with AllocateBuffer(). | |
@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance. | |
@param Pages The number of pages to free. | |
@param HostAddress The base system memory address of the allocated range. | |
@retval EFI_SUCCESS The requested memory pages were freed. | |
@retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and Pages | |
was not allocated with AllocateBuffer(). | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcFreeBuffer ( | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This, | |
IN UINTN Pages, | |
IN VOID *HostAddress | |
) | |
{ | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
EFI_STATUS Status; | |
if ((This == NULL) || (HostAddress == NULL)) { | |
return EFI_INVALID_PARAMETER; | |
} | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This); | |
PciIo = Private->PciIo; | |
Status = PciIo->FreeBuffer (PciIo, Pages, HostAddress); | |
return Status; | |
} | |
/** | |
Flushes all posted write transactions from the UFS bus to attached UFS device. | |
@param This A pointer to the EFI_UFS_HOST_CONTROLLER_PROTOCOL instance. | |
@retval EFI_SUCCESS The posted write transactions were flushed from the UFS bus | |
to attached UFS device. | |
@retval EFI_DEVICE_ERROR The posted write transactions were not flushed from the UFS | |
bus to attached UFS device due to a hardware error. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcFlush ( | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This | |
) | |
{ | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
EFI_STATUS Status; | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This); | |
PciIo = Private->PciIo; | |
Status = PciIo->Flush (PciIo); | |
return Status; | |
} | |
/** | |
Enable a UFS bus driver to access UFS MMIO registers in the UFS Host Controller memory space. | |
@param This A pointer to the EDKII_UFS_HOST_CONTROLLER_PROTOCOL instance. | |
@param Width Signifies the width of the memory operations. | |
@param Offset The offset within the UFS Host Controller MMIO space to start the | |
memory operation. | |
@param Count The number of memory operations to perform. | |
@param Buffer For read operations, the destination buffer to store the results. | |
For write operations, the source buffer to write data from. | |
@retval EFI_SUCCESS The data was read from or written to the UFS host controller. | |
@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not | |
valid for the UFS Host Controller memory space. | |
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. | |
@retval EFI_INVALID_PARAMETER One or more parameters are invalid. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcMmioRead ( | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This, | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL_WIDTH Width, | |
IN UINT64 Offset, | |
IN UINTN Count, | |
IN OUT VOID *Buffer | |
) | |
{ | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
EFI_STATUS Status; | |
UINT8 BarIndex; | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This); | |
PciIo = Private->PciIo; | |
BarIndex = Private->BarIndex; | |
Status = PciIo->Mem.Read (PciIo, (EFI_PCI_IO_PROTOCOL_WIDTH)Width, BarIndex, Offset, Count, Buffer); | |
return Status; | |
} | |
/** | |
Enable a UFS bus driver to access UFS MMIO registers in the UFS Host Controller memory space. | |
@param This A pointer to the EDKII_UFS_HOST_CONTROLLER_PROTOCOL instance. | |
@param Width Signifies the width of the memory operations. | |
@param Offset The offset within the UFS Host Controller MMIO space to start the | |
memory operation. | |
@param Count The number of memory operations to perform. | |
@param Buffer For read operations, the destination buffer to store the results. | |
For write operations, the source buffer to write data from. | |
@retval EFI_SUCCESS The data was read from or written to the UFS host controller. | |
@retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not | |
valid for the UFS Host Controller memory space. | |
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources. | |
@retval EFI_INVALID_PARAMETER One or more parameters are invalid. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcMmioWrite ( | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL *This, | |
IN EDKII_UFS_HOST_CONTROLLER_PROTOCOL_WIDTH Width, | |
IN UINT64 Offset, | |
IN UINTN Count, | |
IN OUT VOID *Buffer | |
) | |
{ | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
EFI_STATUS Status; | |
UINT8 BarIndex; | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (This); | |
PciIo = Private->PciIo; | |
BarIndex = Private->BarIndex; | |
Status = PciIo->Mem.Write (PciIo, (EFI_PCI_IO_PROTOCOL_WIDTH)Width, BarIndex, Offset, Count, Buffer); | |
return Status; | |
} | |
/** | |
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. | |
This function checks to see if the driver specified by This supports the device specified by | |
ControllerHandle. Drivers will typically use the device path attached to | |
ControllerHandle and/or the services from the bus I/O abstraction attached to | |
ControllerHandle to determine if the driver supports ControllerHandle. This function | |
may be called many times during platform initialization. In order to reduce boot times, the tests | |
performed by this function must be very small, and take as little time as possible to execute. This | |
function must not change the state of any hardware devices, and this function must be aware that the | |
device specified by ControllerHandle may already be managed by the same driver or a | |
different driver. This function must match its calls to AllocatePages() with FreePages(), | |
AllocatePool() with FreePool(), and OpenProtocol() with CloseProtocol(). | |
Since ControllerHandle may have been previously started by the same driver, if a protocol is | |
already in the opened state, then it must not be closed with CloseProtocol(). This is required | |
to guarantee the state of ControllerHandle is not modified by this function. | |
@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 | |
UfsHcDriverBindingSupported ( | |
IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
IN EFI_HANDLE Controller, | |
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath | |
) | |
{ | |
EFI_STATUS Status; | |
BOOLEAN UfsHcFound; | |
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
PCI_TYPE00 PciData; | |
PciIo = NULL; | |
ParentDevicePath = NULL; | |
UfsHcFound = FALSE; | |
// | |
// UfsHcDxe is a device driver, and should ingore the | |
// "RemainingDevicePath" according to EFI spec | |
// | |
Status = gBS->OpenProtocol ( | |
Controller, | |
&gEfiDevicePathProtocolGuid, | |
(VOID *)&ParentDevicePath, | |
This->DriverBindingHandle, | |
Controller, | |
EFI_OPEN_PROTOCOL_BY_DRIVER | |
); | |
if (EFI_ERROR (Status)) { | |
// | |
// EFI_ALREADY_STARTED is also an error | |
// | |
return Status; | |
} | |
// | |
// Close the protocol because we don't use it here | |
// | |
gBS->CloseProtocol ( | |
Controller, | |
&gEfiDevicePathProtocolGuid, | |
This->DriverBindingHandle, | |
Controller | |
); | |
// | |
// Now test the EfiPciIoProtocol | |
// | |
Status = gBS->OpenProtocol ( | |
Controller, | |
&gEfiPciIoProtocolGuid, | |
(VOID **)&PciIo, | |
This->DriverBindingHandle, | |
Controller, | |
EFI_OPEN_PROTOCOL_BY_DRIVER | |
); | |
if (EFI_ERROR (Status)) { | |
return Status; | |
} | |
// | |
// Now further check the PCI header: Base class (offset 0x0B) and | |
// Sub Class (offset 0x0A). This controller should be an UFS controller | |
// | |
Status = PciIo->Pci.Read ( | |
PciIo, | |
EfiPciIoWidthUint8, | |
0, | |
sizeof (PciData), | |
&PciData | |
); | |
if (EFI_ERROR (Status)) { | |
gBS->CloseProtocol ( | |
Controller, | |
&gEfiPciIoProtocolGuid, | |
This->DriverBindingHandle, | |
Controller | |
); | |
return EFI_UNSUPPORTED; | |
} | |
// | |
// Since we already got the PciData, we can close protocol to avoid to carry it on for multiple exit points. | |
// | |
gBS->CloseProtocol ( | |
Controller, | |
&gEfiPciIoProtocolGuid, | |
This->DriverBindingHandle, | |
Controller | |
); | |
// | |
// Examine UFS Host Controller PCI Configuration table fields | |
// | |
if (PciData.Hdr.ClassCode[2] == PCI_CLASS_MASS_STORAGE) { | |
if (PciData.Hdr.ClassCode[1] == 0x09 ) { | |
// UFS Controller Subclass | |
UfsHcFound = TRUE; | |
} | |
} | |
if (!UfsHcFound) { | |
return EFI_UNSUPPORTED; | |
} | |
return Status; | |
} | |
/** | |
Starts a device controller or a bus controller. | |
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. 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 | |
UfsHcDriverBindingStart ( | |
IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
IN EFI_HANDLE Controller, | |
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath | |
) | |
{ | |
EFI_STATUS Status; | |
EFI_PCI_IO_PROTOCOL *PciIo; | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
UINT64 Supports; | |
UINT8 BarIndex; | |
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BarDesc; | |
PciIo = NULL; | |
Private = NULL; | |
Supports = 0; | |
BarDesc = NULL; | |
// | |
// Now test and open the EfiPciIoProtocol | |
// | |
Status = gBS->OpenProtocol ( | |
Controller, | |
&gEfiPciIoProtocolGuid, | |
(VOID **)&PciIo, | |
This->DriverBindingHandle, | |
Controller, | |
EFI_OPEN_PROTOCOL_BY_DRIVER | |
); | |
// | |
// Status == 0 - A normal execution flow, SUCCESS and the program proceeds. | |
// Status == ALREADY_STARTED - A non-zero Status code returned. It indicates | |
// that the protocol has been opened and should be treated as a | |
// normal condition and the program proceeds. The Protocol will not | |
// opened 'again' by this call. | |
// Status != ALREADY_STARTED - Error status, terminate program execution | |
// | |
if (EFI_ERROR (Status)) { | |
// | |
// EFI_ALREADY_STARTED is also an error | |
// | |
return Status; | |
} | |
Private = AllocateCopyPool (sizeof (UFS_HOST_CONTROLLER_PRIVATE_DATA), &gUfsHcTemplate); | |
if (Private == NULL) { | |
Status = EFI_OUT_OF_RESOURCES; | |
goto Done; | |
} | |
Private->PciIo = PciIo; | |
for (BarIndex = 0; BarIndex < PCI_MAX_BAR; BarIndex++) { | |
Status = PciIo->GetBarAttributes ( | |
PciIo, | |
BarIndex, | |
NULL, | |
(VOID **)&BarDesc | |
); | |
if (Status == EFI_UNSUPPORTED) { | |
continue; | |
} else if (EFI_ERROR (Status)) { | |
goto Done; | |
} | |
if (BarDesc->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) { | |
Private->BarIndex = BarIndex; | |
FreePool (BarDesc); | |
break; | |
} | |
FreePool (BarDesc); | |
} | |
Status = PciIo->Attributes ( | |
PciIo, | |
EfiPciIoAttributeOperationGet, | |
0, | |
&Private->PciAttributes | |
); | |
if (EFI_ERROR (Status)) { | |
goto Done; | |
} | |
Status = PciIo->Attributes ( | |
PciIo, | |
EfiPciIoAttributeOperationSupported, | |
0, | |
&Supports | |
); | |
if (!EFI_ERROR (Status)) { | |
Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE; | |
Status = PciIo->Attributes ( | |
PciIo, | |
EfiPciIoAttributeOperationEnable, | |
Supports, | |
NULL | |
); | |
} else { | |
goto Done; | |
} | |
/// | |
/// Install UFS_HOST_CONTROLLER protocol | |
/// | |
Status = gBS->InstallProtocolInterface ( | |
&Controller, | |
&gEdkiiUfsHostControllerProtocolGuid, | |
EFI_NATIVE_INTERFACE, | |
(VOID *)&(Private->UfsHc) | |
); | |
Done: | |
if (EFI_ERROR (Status)) { | |
if ((Private != NULL) && (Private->PciAttributes != 0)) { | |
// | |
// Restore original PCI attributes | |
// | |
PciIo->Attributes ( | |
PciIo, | |
EfiPciIoAttributeOperationSet, | |
Private->PciAttributes, | |
NULL | |
); | |
} | |
gBS->CloseProtocol ( | |
Controller, | |
&gEfiPciIoProtocolGuid, | |
This->DriverBindingHandle, | |
Controller | |
); | |
if (Private != NULL) { | |
FreePool (Private); | |
} | |
} | |
return Status; | |
} | |
/** | |
Stops a device controller or a bus controller. | |
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 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 | |
UfsHcDriverBindingStop ( | |
IN EFI_DRIVER_BINDING_PROTOCOL *This, | |
IN EFI_HANDLE Controller, | |
IN UINTN NumberOfChildren, | |
IN EFI_HANDLE *ChildHandleBuffer | |
) | |
{ | |
EFI_STATUS Status; | |
UFS_HOST_CONTROLLER_PRIVATE_DATA *Private; | |
EDKII_UFS_HOST_CONTROLLER_PROTOCOL *UfsHc; | |
/// | |
/// Get private data | |
/// | |
Status = gBS->OpenProtocol ( | |
Controller, | |
&gEdkiiUfsHostControllerProtocolGuid, | |
(VOID **)&UfsHc, | |
This->DriverBindingHandle, | |
Controller, | |
EFI_OPEN_PROTOCOL_GET_PROTOCOL | |
); | |
if (EFI_ERROR (Status)) { | |
return EFI_DEVICE_ERROR; | |
} | |
Private = UFS_HOST_CONTROLLER_PRIVATE_DATA_FROM_UFSHC (UfsHc); | |
Status = gBS->UninstallProtocolInterface ( | |
Controller, | |
&gEdkiiUfsHostControllerProtocolGuid, | |
&(Private->UfsHc) | |
); | |
if (!EFI_ERROR (Status)) { | |
// | |
// Restore original PCI attributes | |
// | |
Status = Private->PciIo->Attributes ( | |
Private->PciIo, | |
EfiPciIoAttributeOperationSet, | |
Private->PciAttributes, | |
NULL | |
); | |
ASSERT_EFI_ERROR (Status); | |
// | |
// Close protocols opened by UFS host controller driver | |
// | |
gBS->CloseProtocol ( | |
Controller, | |
&gEfiPciIoProtocolGuid, | |
This->DriverBindingHandle, | |
Controller | |
); | |
FreePool (Private); | |
} | |
return Status; | |
} | |
/** | |
The entry point for UFS host controller driver, used to install this driver on the ImageHandle. | |
@param[in] ImageHandle The firmware allocated handle for this driver image. | |
@param[in] SystemTable Pointer to the EFI system table. | |
@retval EFI_SUCCESS Driver loaded. | |
@retval other Driver not loaded. | |
**/ | |
EFI_STATUS | |
EFIAPI | |
UfsHcDriverEntry ( | |
IN EFI_HANDLE ImageHandle, | |
IN EFI_SYSTEM_TABLE *SystemTable | |
) | |
{ | |
EFI_STATUS Status; | |
Status = EfiLibInstallDriverBindingComponentName2 ( | |
ImageHandle, | |
SystemTable, | |
&gUfsHcDriverBinding, | |
ImageHandle, | |
&gUfsHcComponentName, | |
&gUfsHcComponentName2 | |
); | |
ASSERT_EFI_ERROR (Status); | |
return Status; | |
} |