/**
Send command SET_RELATIVE_ADDRESS to the device to set the device address.
@param[in] Device A pointer to the SD_DEVICE instance.
@param[out] Rca The relative device address to assign.
@retval EFI_SUCCESS The request is executed successfully.
@retval EFI_OUT_OF_RESOURCES The request could not be executed due to a lack of resources.
@retval Others The request could not be executed successfully.
**/
EFI_STATUS
SdSetRca (
IN SD_DEVICE *Device,
OUT UINT16 *Rca
)
{
EFI_STATUS Status;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
EFI_SD_MMC_COMMAND_BLOCK SdMmcCmdBlk;
EFI_SD_MMC_STATUS_BLOCK SdMmcStatusBlk;
EFI_SD_MMC_PASS_THRU_COMMAND_PACKET Packet;
PassThru = Device->Private->PassThru;
ZeroMem (&SdMmcCmdBlk, sizeof (SdMmcCmdBlk));
ZeroMem (&SdMmcStatusBlk, sizeof (SdMmcStatusBlk));
ZeroMem (&Packet, sizeof (Packet));
Packet.SdMmcCmdBlk = &SdMmcCmdBlk;
Packet.SdMmcStatusBlk = &SdMmcStatusBlk;
Packet.Timeout = SD_GENERIC_TIMEOUT;
SdMmcCmdBlk.CommandIndex = SD_SET_RELATIVE_ADDR;
SdMmcCmdBlk.CommandType = SdMmcCommandTypeBcr;
SdMmcCmdBlk.ResponseType = SdMmcResponseTypeR6;
Status = PassThru->PassThru (PassThru, Device->Slot, &Packet, NULL);
if (!EFI_ERROR (Status)) {
DEBUG ((EFI_D_INFO, "Set RCA succeeds with Resp0 = 0x%x\n", SdMmcStatusBlk.Resp0));
*Rca = (UINT16)(SdMmcStatusBlk.Resp0 >> 16);
}
/**
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
EmmcDxeDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EMMC_DRIVER_PRIVATE_DATA *Private;
UINT8 Slot;
Private = NULL;
PassThru = NULL;
Status = gBS->OpenProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
(VOID **) &PassThru,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if ((EFI_ERROR (Status)) && (Status != EFI_ALREADY_STARTED)) {
return Status;
}
//
// Check EFI_ALREADY_STARTED to reuse the original EMMC_DRIVER_PRIVATE_DATA.
//
if (Status != EFI_ALREADY_STARTED) {
Private = AllocateZeroPool (sizeof (EMMC_DRIVER_PRIVATE_DATA));
if (Private == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &ParentDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
ASSERT_EFI_ERROR (Status);
Private->PassThru = PassThru;
Private->Controller = Controller;
Private->ParentDevicePath = ParentDevicePath;
Private->DriverBindingHandle = This->DriverBindingHandle;
Status = gBS->InstallProtocolInterface (
&Controller,
&gEfiCallerIdGuid,
EFI_NATIVE_INTERFACE,
Private
);
if (EFI_ERROR (Status)) {
goto Error;
}
} else {
Status = gBS->OpenProtocol (
Controller,
&gEfiCallerIdGuid,
(VOID **) &Private,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
goto Error;
}
}
if (RemainingDevicePath == NULL) {
Slot = 0xFF;
while (TRUE) {
Status = PassThru->GetNextSlot (PassThru, &Slot);
if (EFI_ERROR (Status)) {
//
// Cannot find more legal slots.
//
Status = EFI_SUCCESS;
break;
}
Status = DiscoverEmmcDevice (Private, Slot, NULL);
if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
break;
}
}
} else if (!IsDevicePathEnd (RemainingDevicePath)) {
Status = PassThru->GetSlotNumber (PassThru, RemainingDevicePath, &Slot);
if (!EFI_ERROR (Status)) {
Status = DiscoverEmmcDevice (Private, Slot, NextDevicePathNode (RemainingDevicePath));
}
}
Error:
if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {
gBS->CloseProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (Private != NULL) {
gBS->UninstallMultipleProtocolInterfaces (
Controller,
&gEfiCallerIdGuid,
Private,
NULL
);
FreePool (Private);
}
}
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
EmmcDxeDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
UINT8 Slot;
//
// Test EFI_SD_MMC_PASS_THRU_PROTOCOL on the controller handle.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
(VOID**) &PassThru,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (Status == EFI_ALREADY_STARTED) {
return EFI_SUCCESS;
}
if (EFI_ERROR (Status)) {
return Status;
}
//
// Test RemainingDevicePath is valid or not.
//
if ((RemainingDevicePath != NULL) && !IsDevicePathEnd (RemainingDevicePath)) {
Status = PassThru->GetSlotNumber (PassThru, RemainingDevicePath, &Slot);
if (EFI_ERROR (Status)) {
//
// Close the I/O Abstraction(s) used to perform the supported test
//
gBS->CloseProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
}
//
// Close the I/O Abstraction(s) used to perform the supported test
//
gBS->CloseProtocol (
Controller,
&gEfiSdMmcPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
//
// Open the EFI Device Path protocol needed to perform the supported test
//
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &ParentDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
return Status;
}
/**
Scan EMMC Bus to discover the device.
@param[in] Private The EMMC driver private data structure.
@param[in] Slot The slot number to check device present.
@param[in] RemainingDevicePath The pointer to the remaining device path.
@retval EFI_SUCCESS Successfully to discover the device and attach
SdMmcIoProtocol to it.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
of resources.
@retval EFI_ALREADY_STARTED The device was discovered before.
@retval Others Fail to discover the device.
**/
EFI_STATUS
EFIAPI
DiscoverEmmcDevice (
IN EMMC_DRIVER_PRIVATE_DATA *Private,
IN UINT8 Slot,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EMMC_DEVICE *Device;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
EFI_DEVICE_PATH_PROTOCOL *RemainingEmmcDevPath;
EFI_DEV_PATH *Node;
EFI_HANDLE DeviceHandle;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
UINT8 Index;
Device = NULL;
DevicePath = NULL;
NewDevicePath = NULL;
RemainingDevicePath = NULL;
PassThru = Private->PassThru;
Device = &Private->Device[Slot];
//
// Build Device Path to check if the EMMC device present at the slot.
//
Status = PassThru->BuildDevicePath (
PassThru,
Slot,
&DevicePath
);
if (EFI_ERROR(Status)) {
return Status;
}
if (DevicePath->SubType != MSG_EMMC_DP) {
Status = EFI_UNSUPPORTED;
goto Error;
}
NewDevicePath = AppendDevicePathNode (
Private->ParentDevicePath,
DevicePath
);
if (NewDevicePath == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
DeviceHandle = NULL;
RemainingEmmcDevPath = NewDevicePath;
Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingEmmcDevPath, &DeviceHandle);
//
// The device path to the EMMC device doesn't exist. It means the corresponding device private data hasn't been initialized.
//
if (EFI_ERROR (Status) || (DeviceHandle == NULL) || !IsDevicePathEnd (RemainingEmmcDevPath)) {
Device->DevicePath = NewDevicePath;
Device->Slot = Slot;
Device->Private = Private;
//
// Expose user area in the Sd memory card to upper layer.
//
Status = DiscoverAllPartitions (Device);
if (EFI_ERROR(Status)) {
FreePool (NewDevicePath);
goto Error;
}
Status = gBS->InstallProtocolInterface (
&Device->Handle,
&gEfiDevicePathProtocolGuid,
EFI_NATIVE_INTERFACE,
Device->DevicePath
);
if (EFI_ERROR(Status)) {
FreePool (NewDevicePath);
goto Error;
}
Device->ControllerNameTable = NULL;
GetEmmcModelName (Device, &Device->Cid);
AddUnicodeString2 (
"eng",
gEmmcDxeComponentName.SupportedLanguages,
&Device->ControllerNameTable,
Device->ModelName,
TRUE
);
AddUnicodeString2 (
"en",
gEmmcDxeComponentName.SupportedLanguages,
&Device->ControllerNameTable,
Device->ModelName,
FALSE
);
}
if (RemainingDevicePath == NULL) {
//
// Expose all partitions in the Emmc device to upper layer.
//
for (Index = 0; Index < EMMC_MAX_PARTITIONS; Index++) {
InstallProtocolOnPartition (Device, Index);
}
} else if (!IsDevicePathEnd (RemainingDevicePath)) {
//
// Enumerate the specified partition
//
Node = (EFI_DEV_PATH *) RemainingDevicePath;
if ((DevicePathType (&Node->DevPath) != HARDWARE_DEVICE_PATH) ||
(DevicePathSubType (&Node->DevPath) != HW_CONTROLLER_DP) ||
(DevicePathNodeLength (&Node->DevPath) != sizeof (CONTROLLER_DEVICE_PATH))) {
Status = EFI_INVALID_PARAMETER;
goto Error;
}
Index = (UINT8)Node->Controller.ControllerNumber;
if (Index >= EMMC_MAX_PARTITIONS) {
Status = EFI_INVALID_PARAMETER;
goto Error;
}
Status = InstallProtocolOnPartition (Device, Index);
}
Error:
FreePool (DevicePath);
return Status;
}
/**
Scan SD Bus to discover the device.
@param[in] Private The SD driver private data structure.
@param[in] Slot The slot number to check device present.
@retval EFI_SUCCESS Successfully to discover the device and attach
SdMmcIoProtocol to it.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack
of resources.
@retval EFI_ALREADY_STARTED The device was discovered before.
@retval Others Fail to discover the device.
**/
EFI_STATUS
EFIAPI
DiscoverSdDevice (
IN SD_DRIVER_PRIVATE_DATA *Private,
IN UINT8 Slot
)
{
EFI_STATUS Status;
SD_DEVICE *Device;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePath;
EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath;
EFI_HANDLE DeviceHandle;
EFI_SD_MMC_PASS_THRU_PROTOCOL *PassThru;
Device = NULL;
DevicePath = NULL;
NewDevicePath = NULL;
RemainingDevicePath = NULL;
PassThru = Private->PassThru;
//
// Build Device Path
//
Status = PassThru->BuildDevicePath (
PassThru,
Slot,
&DevicePath
);
if (EFI_ERROR(Status)) {
return Status;
}
if (DevicePath->SubType != MSG_SD_DP) {
Status = EFI_UNSUPPORTED;
goto Error;
}
NewDevicePath = AppendDevicePathNode (
Private->ParentDevicePath,
DevicePath
);
if (NewDevicePath == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
DeviceHandle = NULL;
RemainingDevicePath = NewDevicePath;
Status = gBS->LocateDevicePath (&gEfiDevicePathProtocolGuid, &RemainingDevicePath, &DeviceHandle);
if (!EFI_ERROR (Status) && (DeviceHandle != NULL) && IsDevicePathEnd(RemainingDevicePath)) {
//
// The device has been started, directly return to fast boot.
//
Status = EFI_ALREADY_STARTED;
goto Error;
}
//
// Allocate buffer to store SD_DEVICE private data.
//
Device = AllocateCopyPool (sizeof (SD_DEVICE), &mSdDeviceTemplate);
if (Device == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Error;
}
Device->DevicePath = NewDevicePath;
Device->Slot = Slot;
Device->Private = Private;
InitializeListHead (&Device->Queue);
//
// Expose user area in the Sd memory card to upper layer.
//
Status = DiscoverUserArea (Device);
if (EFI_ERROR(Status)) {
goto Error;
}
Device->ControllerNameTable = NULL;
AddUnicodeString2 (
"eng",
gSdDxeComponentName.SupportedLanguages,
&Device->ControllerNameTable,
Device->ModelName,
TRUE
);
AddUnicodeString2 (
"en",
gSdDxeComponentName2.SupportedLanguages,
&Device->ControllerNameTable,
Device->ModelName,
FALSE
);
Status = gBS->InstallMultipleProtocolInterfaces (
&Device->Handle,
&gEfiDevicePathProtocolGuid,
Device->DevicePath,
&gEfiBlockIoProtocolGuid,
&Device->BlockIo,
&gEfiBlockIo2ProtocolGuid,
&Device->BlockIo2,
&gEfiEraseBlockProtocolGuid,
&Device->EraseBlock,
&gEfiDiskInfoProtocolGuid,
&Device->DiskInfo,
NULL
);
if (!EFI_ERROR (Status)) {
gBS->OpenProtocol (
Private->Controller,
&gEfiSdMmcPassThruProtocolGuid,
(VOID **) &(Private->PassThru),
Private->DriverBindingHandle,
Device->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
}
Error:
FreePool (DevicePath);
if (EFI_ERROR (Status) && (NewDevicePath != NULL)) {
FreePool (NewDevicePath);
}
if (EFI_ERROR (Status) && (Device != NULL)) {
FreePool (Device);
}
return Status;
}
