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audk/MdeModulePkg/Bus/Ata/AtaBusDxe/AtaBus.c

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/** @file
This file implements protocol interfaces for ATA bus driver.
This file implements protocol interfaces: Driver Binding protocol,
Block IO protocol and DiskInfo protocol.
Copyright (c) 2009, Intel Corporation
All rights reserved. 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 "AtaBus.h"
//
// ATA Bus Driver Binding Protocol Instance
//
EFI_DRIVER_BINDING_PROTOCOL gAtaBusDriverBinding = {
AtaBusDriverBindingSupported,
AtaBusDriverBindingStart,
AtaBusDriverBindingStop,
0x10,
NULL,
NULL
};
//
// Template for ATA Child Device.
//
ATA_DEVICE gAtaDeviceTemplate = {
ATA_DEVICE_SIGNATURE, // Signature;
NULL, // Handle;
{ // BlockIo
EFI_BLOCK_IO_PROTOCOL_REVISION,
NULL,
AtaBlockIoReset,
AtaBlockIoReadBlocks,
AtaBlockIoWriteBlocks,
AtaBlockIoFlushBlocks
},
{ // BlockMedia
0, // MediaId
FALSE, // RemovableMedia
TRUE, // MediaPresent
FALSE, // LogicPartition
FALSE, // ReadOnly
FALSE, // WritingCache
0x200, // BlockSize
4, // IoAlign
0, // LastBlock
0, // LowestAlignedLba
1 // LogicalBlocksPerPhysicalBlock
},
{ // DiskInfo
EFI_DISK_INFO_IDE_INTERFACE_GUID,
AtaDiskInfoInquiry,
AtaDiskInfoIdentify,
AtaDiskInfoSenseData,
AtaDiskInfoWhichIde
},
NULL, // DevicePath;
NULL, // AtaBusDriverData;
0, // Port,
0, // PortMultiplierPort;
{ 0, }, // Packet
{{ 0}, }, // Acb
NULL, // Asb
FALSE, // UdmaValid
FALSE, // Lba48Bit
NULL, // IdentifyData
NULL, // ControllerNameTable
{L'\0', } // ModelName
};
/**
Allocates an aligned buffer for ATA device.
This function allocates an aligned buffer for the ATA device to perform
ATA pass through operations. The alignment requirement is from ATA pass
through interface.
@param AtaDevice The ATA child device involved for the operation.
@param BufferSize The request buffer size.
@return A pointer to the aligned buffer or NULL if the allocation fails.
**/
VOID *
AllocateAlignedBuffer (
IN ATA_DEVICE *AtaDevice,
IN UINTN BufferSize
)
{
return AllocateAlignedPages (EFI_SIZE_TO_PAGES (BufferSize), AtaDevice->AtaBusDriverData->AtaPassThru->Mode->IoAlign);
}
/**
Frees an aligned buffer for ATA device.
This function frees an aligned buffer for the ATA device to perform
ATA pass through operations.
@param AtaDevice The ATA child device involved for the operation.
@param BufferSize The request buffer size.
**/
VOID
FreeAlignedBuffer (
IN VOID *Buffer,
IN UINTN BufferSize
)
{
if (Buffer != NULL) {
FreePages (Buffer, EFI_SIZE_TO_PAGES (BufferSize));
}
}
/**
Release all the resources allocated for the ATA device.
This function releases all the resources allocated for the ATA device.
@param AtaDevice The ATA child device involved for the operation.
**/
VOID
ReleaseAtaResources (
IN ATA_DEVICE *AtaDevice
)
{
FreeUnicodeStringTable (AtaDevice->ControllerNameTable);
FreeAlignedBuffer (AtaDevice->Asb, sizeof (*AtaDevice->Asb));
FreeAlignedBuffer (AtaDevice->IdentifyData, sizeof (*AtaDevice->IdentifyData));
if (AtaDevice->DevicePath != NULL) {
FreePool (AtaDevice->DevicePath);
}
FreePool (AtaDevice);
}
/**
Registers an ATA device.
This function allocates an ATA device structure for the ATA device specified by
Port and PortMultiplierPort if the ATA device is identified as a valid one.
Then it will create child handle and install Block IO and Disk Info protocol on
it.
@param AtaDevice The ATA child device involved for the operation.
@param Port The port number of the ATA device.
@param PortMultiplierPort The port multiplier port number of the ATA device.
@retval EFI_SUCCESS The ATA device is successfully registered.
@retval EFI_OUT_OF_RESOURCES There is not enough memory to allocate the ATA device
and related data structures.
@return Others Some error occurs when registering the ATA device.
**/
EFI_STATUS
RegisterAtaDevice (
IN OUT ATA_BUS_DRIVER_DATA *AtaBusDriverData,
IN UINT16 Port,
IN UINT16 PortMultiplierPort
)
{
EFI_STATUS Status;
ATA_DEVICE *AtaDevice;
EFI_ATA_PASS_THRU_PROTOCOL *AtaPassThru;
EFI_DEVICE_PATH_PROTOCOL *NewDevicePathNode;
NewDevicePathNode = NULL;
//
// Allocate ATA device from the template.
//
AtaDevice = AllocateCopyPool (sizeof (gAtaDeviceTemplate), &gAtaDeviceTemplate);
if (AtaDevice == NULL) {
return EFI_OUT_OF_RESOURCES;
}
//
// Initializes ATA device structures and allocates the required buffer.
//
AtaDevice->BlockIo.Media = &AtaDevice->BlockMedia;
AtaDevice->AtaBusDriverData = AtaBusDriverData;
AtaDevice->Port = Port;
AtaDevice->PortMultiplierPort = PortMultiplierPort;
AtaDevice->Asb = AllocateAlignedBuffer (AtaDevice, sizeof (*AtaDevice->Asb));
if (AtaDevice->Asb == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
AtaDevice->IdentifyData = AllocateAlignedBuffer (AtaDevice, sizeof (*AtaDevice->IdentifyData));
if (AtaDevice->IdentifyData == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto Done;
}
//
// Try to identify the ATA device via the ATA pass through command.
//
Status = DiscoverAtaDevice (AtaDevice);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Build controller name for Component Name (2) protocol.
//
Status = AddUnicodeString2 (
"eng",
gAtaBusComponentName.SupportedLanguages,
&AtaDevice->ControllerNameTable,
AtaDevice->ModelName,
TRUE
);
if (EFI_ERROR (Status)) {
goto Done;
}
Status = AddUnicodeString2 (
"en",
gAtaBusComponentName2.SupportedLanguages,
&AtaDevice->ControllerNameTable,
AtaDevice->ModelName,
FALSE
);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Build device path
//
AtaPassThru = AtaBusDriverData->AtaPassThru;
Status = AtaPassThru->BuildDevicePath (AtaPassThru, Port, PortMultiplierPort, &NewDevicePathNode);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Update to AHCI interface GUID based on device path node. The default one
// is IDE interface GUID copied from template.
//
if (NewDevicePathNode->SubType == MSG_SATA_DP) {
CopyGuid (&AtaDevice->DiskInfo.Interface, &gEfiDiskInfoAhciInterfaceGuid);
}
AtaDevice->DevicePath = AppendDevicePathNode (AtaBusDriverData->ParentDevicePath, NewDevicePathNode);
if (AtaDevice->DevicePath == NULL) {
goto Done;
}
Status = gBS->InstallMultipleProtocolInterfaces (
&AtaDevice->Handle,
&gEfiDevicePathProtocolGuid,
AtaDevice->DevicePath,
&gEfiBlockIoProtocolGuid,
&AtaDevice->BlockIo,
&gEfiDiskInfoProtocolGuid,
&AtaDevice->DiskInfo,
NULL
);
if (EFI_ERROR (Status)) {
goto Done;
}
gBS->OpenProtocol (
AtaBusDriverData->Controller,
&gEfiAtaPassThruProtocolGuid,
(VOID **) &AtaPassThru,
AtaBusDriverData->DriverBindingHandle,
AtaDevice->Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
Done:
if (NewDevicePathNode != NULL) {
FreePool (NewDevicePathNode);
}
if (EFI_ERROR (Status)) {
ReleaseAtaResources (AtaDevice);
DEBUG ((DEBUG_ERROR | DEBUG_INIT, "Failed to initialize Port %x PortMultiplierPort %x, status = %r\n", Port, PortMultiplierPort, Status));
}
return Status;
}
/**
Unregisters an ATA device.
This function removes the protocols installed on the controller handle and
frees the resources allocated for the ATA device.
@param AtaDevice The ATA child device involved for the operation.
@param Controller The controller handle of the ATA device.
@param Handle The child handle.
@retval EFI_SUCCESS The ATA device is successfully unregistered.
@return Others Some error occurs when unregistering the ATA device.
**/
EFI_STATUS
UnregisterAtaDevice (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_HANDLE Handle
)
{
EFI_STATUS Status;
EFI_BLOCK_IO_PROTOCOL *BlockIo;
ATA_DEVICE *AtaDevice;
EFI_ATA_PASS_THRU_PROTOCOL *AtaPassThru;
Status = gBS->OpenProtocol (
Handle,
&gEfiBlockIoProtocolGuid,
(VOID **) &BlockIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
}
AtaDevice = ATA_DEVICE_FROM_BLOCK_IO (BlockIo);
//
// Close the child handle
//
gBS->CloseProtocol (
Controller,
&gEfiAtaPassThruProtocolGuid,
This->DriverBindingHandle,
Handle
);
Status = gBS->UninstallMultipleProtocolInterfaces (
Handle,
&gEfiDevicePathProtocolGuid,
AtaDevice->DevicePath,
&gEfiBlockIoProtocolGuid,
&AtaDevice->BlockIo,
&gEfiDiskInfoProtocolGuid,
&AtaDevice->DiskInfo,
NULL
);
if (EFI_ERROR (Status)) {
gBS->OpenProtocol (
Controller,
&gEfiAtaPassThruProtocolGuid,
(VOID **) &AtaPassThru,
This->DriverBindingHandle,
Handle,
EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER
);
return Status;
}
ReleaseAtaResources (AtaDevice);
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
AtaBusDriverBindingSupported (
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_ATA_PASS_THRU_PROTOCOL *AtaPassThru;
UINT16 Port;
UINT16 PortMultiplierPort;
//
// Test EFI_ATA_PASS_THRU_PROTOCOL on controller handle.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiAtaPassThruProtocolGuid,
(VOID **) &AtaPassThru,
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 = AtaPassThru->GetDevice (AtaPassThru, RemainingDevicePath, &Port, &PortMultiplierPort);
if (EFI_ERROR (Status)) {
return Status;
}
}
//
// Close the I/O Abstraction(s) used to perform the supported test
//
gBS->CloseProtocol (
Controller,
&gEfiAtaPassThruProtocolGuid,
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;
}
/**
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
AtaBusDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_ATA_PASS_THRU_PROTOCOL *AtaPassThru;
EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;
ATA_BUS_DRIVER_DATA *AtaBusDriverData;
UINT16 Port;
UINT16 PortMultiplierPort;
AtaBusDriverData = NULL;
Status = gBS->OpenProtocol (
Controller,
&gEfiDevicePathProtocolGuid,
(VOID **) &ParentDevicePath,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->OpenProtocol (
Controller,
&gEfiAtaPassThruProtocolGuid,
(VOID **) &AtaPassThru,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if ((EFI_ERROR (Status)) && (Status != EFI_ALREADY_STARTED)) {
goto ErrorExit;
}
//
// Check EFI_ALREADY_STARTED to reuse the original ATA_BUS_DRIVER_DATA.
//
if (Status != EFI_ALREADY_STARTED) {
AtaBusDriverData = AllocateZeroPool (sizeof (ATA_BUS_DRIVER_DATA));
if (AtaBusDriverData == NULL) {
Status = EFI_OUT_OF_RESOURCES;
goto ErrorExit;
}
AtaBusDriverData->AtaPassThru = AtaPassThru;
AtaBusDriverData->Controller = Controller;
AtaBusDriverData->ParentDevicePath = ParentDevicePath;
AtaBusDriverData->DriverBindingHandle = This->DriverBindingHandle;
Status = gBS->InstallMultipleProtocolInterfaces (
&Controller,
&gEfiCallerIdGuid,
AtaBusDriverData,
NULL
);
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
} else {
Status = gBS->OpenProtocol (
Controller,
&gEfiCallerIdGuid,
(VOID **) &AtaBusDriverData,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
AtaBusDriverData = NULL;
goto ErrorExit;
}
}
if (RemainingDevicePath == NULL) {
Port = 0xFFFF;
while (TRUE) {
Status = AtaPassThru->GetNextPort (AtaPassThru, &Port);
if (EFI_ERROR (Status)) {
//
// We cannot find more legal port then we are done.
//
break;
}
PortMultiplierPort = 0xFFFF;
while (TRUE) {
Status = AtaPassThru->GetNextDevice (AtaPassThru, Port, &PortMultiplierPort);
if (EFI_ERROR (Status)) {
//
// We cannot find more legal port multiplier port number for ATA device
// on the port, then we are done.
//
break;
}
RegisterAtaDevice (AtaBusDriverData, Port, PortMultiplierPort);
}
}
Status = EFI_SUCCESS;
} else if (!IsDevicePathEnd (RemainingDevicePath)) {
Status = AtaPassThru->GetDevice (AtaPassThru, RemainingDevicePath, &Port, &PortMultiplierPort);
if (!EFI_ERROR (Status)) {
Status = RegisterAtaDevice (AtaBusDriverData,Port, PortMultiplierPort);
}
}
return Status;
ErrorExit:
if (AtaBusDriverData != NULL) {
gBS->UninstallMultipleProtocolInterfaces (
Controller,
&gEfiCallerIdGuid,
AtaBusDriverData,
NULL
);
FreePool (AtaBusDriverData);
}
gBS->CloseProtocol (
Controller,
&gEfiAtaPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
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
AtaBusDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_STATUS Status;
BOOLEAN AllChildrenStopped;
UINTN Index;
ATA_BUS_DRIVER_DATA *AtaBusDriverData;
if (NumberOfChildren == 0) {
Status = gBS->OpenProtocol (
Controller,
&gEfiCallerIdGuid,
(VOID **) &AtaBusDriverData,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (!EFI_ERROR (Status)) {
gBS->UninstallMultipleProtocolInterfaces (
Controller,
&gEfiCallerIdGuid,
AtaBusDriverData,
NULL
);
FreePool (AtaBusDriverData);
}
gBS->CloseProtocol (
Controller,
&gEfiAtaPassThruProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_SUCCESS;
}
AllChildrenStopped = TRUE;
for (Index = 0; Index < NumberOfChildren; Index++) {
Status = UnregisterAtaDevice (This, Controller, ChildHandleBuffer[Index]);
if (EFI_ERROR (Status)) {
AllChildrenStopped = FALSE;
}
}
if (!AllChildrenStopped) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
Reset the Block Device.
@param This Indicates a pointer to the calling context.
@param ExtendedVerification Driver may perform diagnostics on reset.
@retval EFI_SUCCESS The device was reset.
@retval EFI_DEVICE_ERROR The device is not functioning properly and could
not be reset.
**/
EFI_STATUS
EFIAPI
AtaBlockIoReset (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
{
EFI_STATUS Status;
ATA_DEVICE *AtaDevice;
EFI_TPL OldTpl;
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
AtaDevice = ATA_DEVICE_FROM_BLOCK_IO (This);
Status = ResetAtaDevice (AtaDevice);
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Read/Write BufferSize bytes from Lba from/into Buffer.
@param This Indicates a pointer to the calling context.
@param MediaId The media ID that the read/write request is for.
@param Lba The starting logical block address to be read/written. The caller is
responsible for reading/writing to only legitimate locations.
@param BufferSize Size of Buffer, must be a multiple of device block size.
@param Buffer A pointer to the destination/source buffer for the data.
@retval EFI_SUCCESS The data was read/written correctly to the device.
@retval EFI_WRITE_PROTECTED The device can not be read/written to.
@retval EFI_DEVICE_ERROR The device reported an error while performing the read/write.
@retval EFI_NO_MEDIA There is no media in the device.
@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
@retval EFI_INVALID_PARAMETER The read/write request contains LBAs that are not valid,
or the buffer is not on proper alignment.
**/
EFI_STATUS
BlockIoReadWrite (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA Lba,
IN UINTN BufferSize,
OUT VOID *Buffer,
IN BOOLEAN IsWrite
)
{
ATA_DEVICE *AtaDevice;
EFI_STATUS Status;
EFI_TPL OldTpl;
EFI_BLOCK_IO_MEDIA *Media;
UINTN BlockSize;
UINTN NumberOfBlocks;
UINTN IoAlign;
//
// Check parameters.
//
if (Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}
if (BufferSize == 0) {
return EFI_SUCCESS;
}
Media = This->Media;
if (MediaId != Media->MediaId) {
return EFI_MEDIA_CHANGED;
}
BlockSize = Media->BlockSize;
if ((BufferSize % BlockSize) != 0) {
return EFI_BAD_BUFFER_SIZE;
}
NumberOfBlocks = BufferSize / BlockSize;
if ((Lba + NumberOfBlocks - 1) > Media->LastBlock) {
return EFI_INVALID_PARAMETER;
}
IoAlign = Media->IoAlign;
if (IoAlign > 0 && (((UINTN) Buffer & (IoAlign - 1)) != 0)) {
return EFI_INVALID_PARAMETER;
}
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
AtaDevice = ATA_DEVICE_FROM_BLOCK_IO (This);
//
// Invoke low level AtaDevice Access Routine.
//
Status = AccessAtaDevice (AtaDevice, Buffer, Lba, NumberOfBlocks, IsWrite);
gBS->RestoreTPL (OldTpl);
return Status;
}
/**
Read BufferSize bytes from Lba into Buffer.
@param This Indicates a pointer to the calling context.
@param MediaId Id of the media, changes every time the media is replaced.
@param Lba The starting Logical Block Address to read from
@param BufferSize Size of Buffer, must be a multiple of device block size.
@param Buffer A pointer to the destination buffer for the data. The caller is
responsible for either having implicit or explicit ownership of the buffer.
@retval EFI_SUCCESS The data was read correctly from the device.
@retval EFI_DEVICE_ERROR The device reported an error while performing the read.
@retval EFI_NO_MEDIA There is no media in the device.
@retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
@retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,
or the buffer is not on proper alignment.
**/
EFI_STATUS
EFIAPI
AtaBlockIoReadBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA Lba,
IN UINTN BufferSize,
OUT VOID *Buffer
)
{
return BlockIoReadWrite (This, MediaId, Lba, BufferSize, Buffer, FALSE);
}
/**
Write BufferSize bytes from Lba into Buffer.
@param This Indicates a pointer to the calling context.
@param MediaId The media ID that the write request is for.
@param Lba The starting logical block address to be written. The caller is
responsible for writing to only legitimate locations.
@param BufferSize Size of Buffer, must be a multiple of device block size.
@param Buffer A pointer to the source buffer for the data.
@retval EFI_SUCCESS The data was written correctly to the device.
@retval EFI_WRITE_PROTECTED The device can not be written to.
@retval EFI_DEVICE_ERROR The device reported an error while performing the write.
@retval EFI_NO_MEDIA There is no media in the device.
@retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.
@retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the block size of the device.
@retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,
or the buffer is not on proper alignment.
**/
EFI_STATUS
EFIAPI
AtaBlockIoWriteBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA Lba,
IN UINTN BufferSize,
IN VOID *Buffer
)
{
return BlockIoReadWrite (This, MediaId, Lba, BufferSize, Buffer, TRUE);
}
/**
Flush the Block Device.
@param This Indicates a pointer to the calling context.
@retval EFI_SUCCESS All outstanding data was written to the device
@retval EFI_DEVICE_ERROR The device reported an error while writing back the data
@retval EFI_NO_MEDIA There is no media in the device.
**/
EFI_STATUS
EFIAPI
AtaBlockIoFlushBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This
)
{
//
// return directly
//
return EFI_SUCCESS;
}
/**
Provides inquiry information for the controller type.
This function is used by the IDE bus driver to get inquiry data. Data format
of Identify data is defined by the Interface GUID.
@param[in] This Pointer to the EFI_DISK_INFO_PROTOCOL instance.
@param[in,out] InquiryData Pointer to a buffer for the inquiry data.
@param[in,out] InquiryDataSize Pointer to the value for the inquiry data size.
@retval EFI_SUCCESS The command was accepted without any errors.
@retval EFI_NOT_FOUND Device does not support this data class
@retval EFI_DEVICE_ERROR Error reading InquiryData from device
@retval EFI_BUFFER_TOO_SMALL InquiryDataSize not big enough
**/
EFI_STATUS
EFIAPI
AtaDiskInfoInquiry (
IN EFI_DISK_INFO_PROTOCOL *This,
IN OUT VOID *InquiryData,
IN OUT UINT32 *InquiryDataSize
)
{
return EFI_NOT_FOUND;
}
/**
Provides identify information for the controller type.
This function is used by the IDE bus driver to get identify data. Data format
of Identify data is defined by the Interface GUID.
@param[in] This Pointer to the EFI_DISK_INFO_PROTOCOL
instance.
@param[in,out] IdentifyData Pointer to a buffer for the identify data.
@param[in,out] IdentifyDataSize Pointer to the value for the identify data
size.
@retval EFI_SUCCESS The command was accepted without any errors.
@retval EFI_NOT_FOUND Device does not support this data class
@retval EFI_DEVICE_ERROR Error reading IdentifyData from device
@retval EFI_BUFFER_TOO_SMALL IdentifyDataSize not big enough
**/
EFI_STATUS
EFIAPI
AtaDiskInfoIdentify (
IN EFI_DISK_INFO_PROTOCOL *This,
IN OUT VOID *IdentifyData,
IN OUT UINT32 *IdentifyDataSize
)
{
EFI_STATUS Status;
ATA_DEVICE *AtaDevice;
AtaDevice = ATA_DEVICE_FROM_DISK_INFO (This);
Status = EFI_BUFFER_TOO_SMALL;
if (*IdentifyDataSize >= sizeof (*AtaDevice->IdentifyData)) {
Status = EFI_SUCCESS;
CopyMem (IdentifyData, AtaDevice->IdentifyData, sizeof (*AtaDevice->IdentifyData));
}
*IdentifyDataSize = sizeof (*AtaDevice->IdentifyData);
return Status;
}
/**
Provides sense data information for the controller type.
This function is used by the IDE bus driver to get sense data.
Data format of Sense data is defined by the Interface GUID.
@param[in] This Pointer to the EFI_DISK_INFO_PROTOCOL instance.
@param[in,out] SenseData Pointer to the SenseData.
@param[in,out] SenseDataSize Size of SenseData in bytes.
@param[out] SenseDataNumber Pointer to the value for the sense data size.
@retval EFI_SUCCESS The command was accepted without any errors.
@retval EFI_NOT_FOUND Device does not support this data class.
@retval EFI_DEVICE_ERROR Error reading SenseData from device.
@retval EFI_BUFFER_TOO_SMALL SenseDataSize not big enough.
**/
EFI_STATUS
EFIAPI
AtaDiskInfoSenseData (
IN EFI_DISK_INFO_PROTOCOL *This,
IN OUT VOID *SenseData,
IN OUT UINT32 *SenseDataSize,
OUT UINT8 *SenseDataNumber
)
{
return EFI_NOT_FOUND;
}
/**
This function is used by the IDE bus driver to get controller information.
@param[in] This Pointer to the EFI_DISK_INFO_PROTOCOL instance.
@param[out] IdeChannel Pointer to the Ide Channel number. Primary or secondary.
@param[out] IdeDevice Pointer to the Ide Device number. Master or slave.
@retval EFI_SUCCESS IdeChannel and IdeDevice are valid.
@retval EFI_UNSUPPORTED This is not an IDE device.
**/
EFI_STATUS
EFIAPI
AtaDiskInfoWhichIde (
IN EFI_DISK_INFO_PROTOCOL *This,
OUT UINT32 *IdeChannel,
OUT UINT32 *IdeDevice
)
{
ATA_DEVICE *AtaDevice;
AtaDevice = ATA_DEVICE_FROM_DISK_INFO (This);
*IdeChannel = AtaDevice->Port;
*IdeDevice = AtaDevice->PortMultiplierPort;
return EFI_SUCCESS;
}
/**
The user Entry Point for module AtaBus. The user code starts with this function.
@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
InitializeAtaBus(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Install driver model protocol(s).
//
Status = EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gAtaBusDriverBinding,
ImageHandle,
&gAtaBusComponentName,
&gAtaBusComponentName2
);
ASSERT_EFI_ERROR (Status);
return Status;
}
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