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audk/MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.c

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add native ide/ahci driver git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10901 6f19259b-4bc3-4df7-8a09-765794883524
2010-09-29 07:50:45 +02:00
/** @file
This file implements ATA_PASSTHRU_PROCTOCOL and EXT_SCSI_PASSTHRU_PROTOCOL interfaces
for managed ATA controllers.
Copyright (c) 2010, 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 "AtaAtapiPassThru.h"
//
// EFI_DRIVER_BINDING_PROTOCOL instance
//
EFI_DRIVER_BINDING_PROTOCOL gAtaAtapiPassThruDriverBinding = {
AtaAtapiPassThruSupported,
AtaAtapiPassThruStart,
AtaAtapiPassThruStop,
0x10,
NULL,
NULL
};
ATA_ATAPI_PASS_THRU_INSTANCE gAtaAtapiPassThruInstanceTemplate = {
ATA_ATAPI_PASS_THRU_SIGNATURE,
0, // Controller Handle
NULL, // PciIo Protocol
NULL, // IdeControllerInit Protocol
{ // AtaPassThruMode
//
// According to UEFI2.3 spec Section 12.10, Drivers for non-RAID ATA controllers should set
// both EFI_ATA_PASS_THRU_ATTRIBUTES_PHYSICAL and EFI_ATA_PASS_THRU_ATTRIBUTES_LOGICAL
// bits.
// Note that the driver doesn't support AtaPassThru non blocking I/O.
//
EFI_ATA_PASS_THRU_ATTRIBUTES_PHYSICAL | EFI_ATA_PASS_THRU_ATTRIBUTES_LOGICAL,
//
// IoAlign
//
sizeof (UINTN)
},
{ // AtaPassThru
NULL,
AtaPassThruPassThru,
AtaPassThruGetNextPort,
AtaPassThruGetNextDevice,
AtaPassThruBuildDevicePath,
AtaPassThruGetDevice,
AtaPassThruResetPort,
AtaPassThruResetDevice
},
{ // ExtScsiPassThruMode
//
// AdapterId
//
0,
//
// According to UEFI2.3 spec Section 14.7, Drivers for non-RAID SCSI controllers should set
// both EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL and EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL
// bits.
// Note that the driver doesn't support ExtScsiPassThru non blocking I/O.
//
EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL | EFI_EXT_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL,
//
// IoAlign
//
sizeof (UINTN)
},
{ // ExtScsiPassThru
NULL,
ExtScsiPassThruPassThru,
ExtScsiPassThruGetNextTargetLun,
ExtScsiPassThruBuildDevicePath,
ExtScsiPassThruGetTargetLun,
ExtScsiPassThruResetChannel,
ExtScsiPassThruResetTargetLun,
ExtScsiPassThruGetNextTarget
},
EfiAtaUnknownMode, // Work Mode
{ // IdeRegisters
{0},
{0}
},
{ // AhciRegisters
0
},
{ // DeviceList
NULL,
NULL
},
0, // OriginalAttributes
0, // PreviousPort
0, // PreviousPortMultiplier
0, // PreviousTargetId
0 // PreviousLun
};
ATAPI_DEVICE_PATH mAtapiDevicePathTemplate = {
{
MESSAGING_DEVICE_PATH,
MSG_ATAPI_DP,
(UINT8) (sizeof (ATAPI_DEVICE_PATH)),
(UINT8) ((sizeof (ATAPI_DEVICE_PATH)) >> 8),
},
0,
0,
0
};
SATA_DEVICE_PATH mSataDevicePathTemplate = {
{
MESSAGING_DEVICE_PATH,
MSG_SATA_DP,
(UINT8) (sizeof (SATA_DEVICE_PATH)),
(UINT8) ((sizeof (SATA_DEVICE_PATH)) >> 8),
},
0,
0,
0
};
UINT8 mScsiId[TARGET_MAX_BYTES] = {
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF
};
/**
The Entry Point of module.
@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
InitializeAtaAtapiPassThru (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Install driver model protocol(s).
//
Status = EfiLibInstallDriverBindingComponentName2 (
ImageHandle,
SystemTable,
&gAtaAtapiPassThruDriverBinding,
ImageHandle,
&gAtaAtapiPassThruComponentName,
&gAtaAtapiPassThruComponentName2
);
ASSERT_EFI_ERROR (Status);
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().
Because 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
AtaAtapiPassThruSupported (
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_PCI_IO_PROTOCOL *PciIo;
PCI_TYPE00 PciData;
EFI_IDE_CONTROLLER_INIT_PROTOCOL *IdeControllerInit;
//
// SATA Controller is a device driver, and should ingore the
// "RemainingDevicePath" according to UEFI 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
);
Status = gBS->OpenProtocol (
Controller,
&gEfiIdeControllerInitProtocolGuid,
(VOID **) &IdeControllerInit,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
//
// EFI_ALREADY_STARTED is also an error
//
return Status;
}
//
// Close the I/O Abstraction(s) used to perform the supported test
//
gBS->CloseProtocol (
Controller,
&gEfiIdeControllerInitProtocolGuid,
This->DriverBindingHandle,
Controller
);
//
// Now test the EfiPciIoProtocol
//
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
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 ATA controller
//
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint8,
PCI_CLASSCODE_OFFSET,
sizeof (PciData.Hdr.ClassCode),
PciData.Hdr.ClassCode
);
if (EFI_ERROR (Status)) {
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_UNSUPPORTED;
}
//
// Close PciIo protocol as we have gotten the PciData.
//
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (IS_PCI_IDE (&PciData) || IS_PCI_SATADPA (&PciData)) {
return EFI_SUCCESS;
}
return EFI_UNSUPPORTED;
}
/**
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
AtaAtapiPassThruStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_IDE_CONTROLLER_INIT_PROTOCOL *IdeControllerInit;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
EFI_PCI_IO_PROTOCOL *PciIo;
UINT64 Supports;
BOOLEAN PciAttributesSaved;
UINT64 OriginalPciAttributes;
Status = EFI_SUCCESS;
IdeControllerInit = NULL;
Instance = NULL;
PciAttributesSaved = FALSE;
OriginalPciAttributes = 0;
DEBUG ((EFI_D_INFO, "==AtaAtapiPassThru Start== Controller = %x\n", Controller));
Status = gBS->OpenProtocol (
Controller,
&gEfiIdeControllerInitProtocolGuid,
(VOID **) &IdeControllerInit,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Open Ide_Controller_Init Error, Status=%r", Status));
goto ErrorExit;
}
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Get Pci_Io Protocol Error, Status=%r", Status));
goto ErrorExit;
}
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationGet,
0,
&OriginalPciAttributes
);
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
PciAttributesSaved = TRUE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSupported,
0,
&Supports
);
if (!EFI_ERROR (Status)) {
Supports &= EFI_PCI_DEVICE_ENABLE;
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
Supports,
NULL
);
}
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
//
// Allocate a buffer to store the ATA_ATAPI_PASS_THRU_INSTANCE data structure
//
Instance = AllocateCopyPool (sizeof (ATA_ATAPI_PASS_THRU_INSTANCE), &gAtaAtapiPassThruInstanceTemplate);
if (Instance == NULL) {
goto ErrorExit;
}
Instance->ControllerHandle = Controller;
Instance->IdeControllerInit = IdeControllerInit;
Instance->PciIo = PciIo;
Instance->OriginalPciAttributes = OriginalPciAttributes;
Instance->AtaPassThru.Mode = &Instance->AtaPassThruMode;
Instance->ExtScsiPassThru.Mode = &Instance->ExtScsiPassThruMode;
InitializeListHead(&Instance->DeviceList);
//
// Enumerate all inserted ATA devices.
//
Status = EnumerateAttachedDevice (Instance);
if (EFI_ERROR (Status)) {
goto ErrorExit;
}
Status = gBS->InstallMultipleProtocolInterfaces (
&Controller,
&gEfiAtaPassThruProtocolGuid, &(Instance->AtaPassThru),
&gEfiExtScsiPassThruProtocolGuid, &(Instance->ExtScsiPassThru),
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
ErrorExit:
if (IdeControllerInit != NULL) {
gBS->CloseProtocol (
Controller,
&gEfiIdeControllerInitProtocolGuid,
This->DriverBindingHandle,
Controller
);
}
//
// Remove all inserted ATA devices.
//
DestroyDeviceInfoList(Instance);
if (Instance != NULL) {
FreePool (Instance);
}
return EFI_UNSUPPORTED;
}
/**
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
AtaAtapiPassThruStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_STATUS Status;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
EFI_ATA_PASS_THRU_PROTOCOL *AtaPassThru;
EFI_PCI_IO_PROTOCOL *PciIo;
EFI_AHCI_REGISTERS *AhciRegisters;
UINT64 Supports;
DEBUG ((EFI_D_INFO, "==AtaAtapiPassThru Stop== Controller = %x\n", Controller));
Status = gBS->OpenProtocol (
Controller,
&gEfiAtaPassThruProtocolGuid,
(VOID **) &AtaPassThru,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS(AtaPassThru);
PciIo = Instance->PciIo;
//
// Disable this ATA host controller.
//
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSupported,
0,
&Supports
);
if (!EFI_ERROR (Status)) {
Supports &= EFI_PCI_DEVICE_ENABLE;
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationDisable,
Supports,
NULL
);
}
//
// Restore original PCI attributes
//
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationSet,
Instance->OriginalPciAttributes,
NULL
);
ASSERT_EFI_ERROR (Status);
gBS->UninstallMultipleProtocolInterfaces (
Controller,
&gEfiAtaPassThruProtocolGuid, &(Instance->AtaPassThru),
&gEfiExtScsiPassThruProtocolGuid, &(Instance->ExtScsiPassThru),
NULL
);
//
// Close protocols opened by AtaAtapiPassThru controller driver
//
gBS->CloseProtocol (
Controller,
&gEfiIdeControllerInitProtocolGuid,
This->DriverBindingHandle,
Controller
);
//
// Free allocated resource
//
DestroyDeviceInfoList(Instance);
//
// If the current working mode is AHCI mode, then pre-allocated resource
// for AHCI initialization should be released.
//
if (Instance->Mode == EfiAtaAhciMode) {
AhciRegisters = &Instance->AhciRegisters;
PciIo->Unmap (
PciIo,
AhciRegisters->MapCommandTable
);
PciIo->FreeBuffer (
PciIo,
EFI_SIZE_TO_PAGES (AhciRegisters->MaxCommandTableSize),
AhciRegisters->AhciCommandTable
);
PciIo->Unmap (
PciIo,
AhciRegisters->MapCmdList
);
PciIo->FreeBuffer (
PciIo,
EFI_SIZE_TO_PAGES (AhciRegisters->MaxCommandListSize),
AhciRegisters->AhciCmdList
);
PciIo->Unmap (
PciIo,
AhciRegisters->MapRFis
);
PciIo->FreeBuffer (
PciIo,
EFI_SIZE_TO_PAGES (AhciRegisters->MaxReceiveFisSize),
AhciRegisters->AhciRFis
);
}
FreePool (Instance);
return Status;
}
/**
Traverse the attached ATA devices list to find out the device to access.
@param[in] Instance A pointer to the ATA_ATAPI_PASS_THRU_INSTANCE instance.
@param[in] Port The port number of the ATA device to send the command.
@param[in] PortMultiplierPort The port multiplier port number of the ATA device to send the command.
If there is no port multiplier, then specify 0.
@param[in] DeviceType The device type of the ATA device.
@retval The pointer to the data structure of the device info to access.
**/
LIST_ENTRY *
EFIAPI
SearchDeviceInfoList (
IN ATA_ATAPI_PASS_THRU_INSTANCE *Instance,
IN UINT16 Port,
IN UINT16 PortMultiplier,
IN EFI_ATA_DEVICE_TYPE DeviceType
)
{
EFI_ATA_DEVICE_INFO *DeviceInfo;
LIST_ENTRY *Node;
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if ((DeviceInfo->Type == DeviceType) &&
(Port == DeviceInfo->Port) &&
(PortMultiplier == DeviceInfo->PortMultiplier)) {
return Node;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return NULL;
}
/**
Allocate device info data structure to contain device info.
And insert the data structure to the tail of device list for tracing.
@param[in] Instance A pointer to the ATA_ATAPI_PASS_THRU_INSTANCE instance.
@param[in] Port The port number of the ATA device to send the command.
@param[in] PortMultiplierPort The port multiplier port number of the ATA device to send the command.
If there is no port multiplier, then specify 0.
@param[in] DeviceType The device type of the ATA device.
@param[in] IdentifyData The data buffer to store the output of the IDENTIFY cmd.
@retval EFI_SUCCESS Successfully insert the ata device to the tail of device list.
@retval EFI_OUT_OF_RESOURCES Can not allocate enough resource for use.
**/
EFI_STATUS
EFIAPI
CreateNewDeviceInfo (
IN ATA_ATAPI_PASS_THRU_INSTANCE *Instance,
IN UINT16 Port,
IN UINT16 PortMultiplier,
IN EFI_ATA_DEVICE_TYPE DeviceType,
IN EFI_IDENTIFY_DATA *IdentifyData
)
{
EFI_ATA_DEVICE_INFO *DeviceInfo;
DeviceInfo = AllocateZeroPool (sizeof (EFI_ATA_DEVICE_INFO));
if (DeviceInfo == NULL) {
return EFI_OUT_OF_RESOURCES;
}
DeviceInfo->Signature = ATA_ATAPI_DEVICE_SIGNATURE;
DeviceInfo->Port = Port;
DeviceInfo->PortMultiplier = PortMultiplier;
DeviceInfo->Type = DeviceType;
if (IdentifyData != NULL) {
DeviceInfo->IdentifyData = AllocateCopyPool (sizeof (EFI_IDENTIFY_DATA), IdentifyData);
if (DeviceInfo->IdentifyData == NULL) {
FreePool (DeviceInfo);
return EFI_OUT_OF_RESOURCES;
}
}
InsertTailList (&Instance->DeviceList, &DeviceInfo->Link);
return EFI_SUCCESS;
}
/**
Destroy all attached ATA devices info.
@param[in] Instance A pointer to the ATA_ATAPI_PASS_THRU_INSTANCE instance.
**/
VOID
EFIAPI
DestroyDeviceInfoList (
IN ATA_ATAPI_PASS_THRU_INSTANCE *Instance
)
{
EFI_ATA_DEVICE_INFO *DeviceInfo;
LIST_ENTRY *Node;
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
Node = GetNextNode (&Instance->DeviceList, Node);
RemoveEntryList (&DeviceInfo->Link);
if (DeviceInfo->IdentifyData != NULL) {
FreePool (DeviceInfo->IdentifyData);
}
FreePool (DeviceInfo);
}
}
/**
Enumerate all attached ATA devices at IDE mode or AHCI mode separately.
The function is designed to enumerate all attached ATA devices.
@param[in] Instance A pointer to the ATA_ATAPI_PASS_THRU_INSTANCE instance.
@retval EFI_SUCCESS Successfully enumerate attached ATA devices.
@retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.
**/
EFI_STATUS
EFIAPI
EnumerateAttachedDevice (
IN ATA_ATAPI_PASS_THRU_INSTANCE *Instance
)
{
EFI_STATUS Status;
PCI_TYPE00 PciData;
UINT8 ClassCode;
Status = EFI_SUCCESS;
Status = Instance->PciIo->Pci.Read (
Instance->PciIo,
EfiPciIoWidthUint8,
PCI_CLASSCODE_OFFSET,
sizeof (PciData.Hdr.ClassCode),
PciData.Hdr.ClassCode
);
ASSERT_EFI_ERROR (Status);
ClassCode = PciData.Hdr.ClassCode[1];
switch (ClassCode) {
case PCI_CLASS_MASS_STORAGE_IDE :
//
// The ATA controller is working at IDE mode
//
Instance->Mode = EfiAtaIdeMode;
Status = IdeModeInitialization (Instance);
if (EFI_ERROR (Status)) {
Status = EFI_DEVICE_ERROR;
goto Done;
}
break;
case PCI_CLASS_MASS_STORAGE_SATADPA :
//
// The ATA controller is working at AHCI mode
//
Instance->Mode = EfiAtaAhciMode;
Status = AhciModeInitialization (Instance);
if (EFI_ERROR (Status)) {
Status = EFI_DEVICE_ERROR;
goto Done;
}
break;
default :
Status = EFI_UNSUPPORTED;
}
Done:
return Status;
}
/**
Sends an ATA command to an ATA device that is attached to the ATA controller. This function
supports both blocking I/O and non-blocking I/O. The blocking I/O functionality is required,
and the non-blocking I/O functionality is optional.
@param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.
@param[in] Port The port number of the ATA device to send the command.
@param[in] PortMultiplierPort The port multiplier port number of the ATA device to send the command.
If there is no port multiplier, then specify 0.
@param[in, out] Packet A pointer to the ATA command to send to the ATA device specified by Port
and PortMultiplierPort.
@param[in] Event If non-blocking I/O is not supported then Event is ignored, and blocking
I/O is performed. If Event is NULL, then blocking I/O is performed. If
Event is not NULL and non blocking I/O is supported, then non-blocking
I/O is performed, and Event will be signaled when the ATA command completes.
@retval EFI_SUCCESS The ATA command was sent by the host. For bi-directional commands,
InTransferLength bytes were transferred from InDataBuffer. For write and
bi-directional commands, OutTransferLength bytes were transferred by OutDataBuffer.
@retval EFI_BAD_BUFFER_SIZE The ATA command was not executed. The number of bytes that could be transferred
is returned in InTransferLength. For write and bi-directional commands,
OutTransferLength bytes were transferred by OutDataBuffer.
@retval EFI_NOT_READY The ATA command could not be sent because there are too many ATA commands
already queued. The caller may retry again later.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to send the ATA command.
@retval EFI_INVALID_PARAMETER Port, PortMultiplierPort, or the contents of Acb are invalid. The ATA
command was not sent, so no additional status information is available.
**/
EFI_STATUS
EFIAPI
AtaPassThruPassThru (
IN EFI_ATA_PASS_THRU_PROTOCOL *This,
IN UINT16 Port,
IN UINT16 PortMultiplierPort,
IN OUT EFI_ATA_PASS_THRU_COMMAND_PACKET *Packet,
IN EFI_EVENT Event OPTIONAL
)
{
EFI_STATUS Status;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
EFI_ATA_PASS_THRU_CMD_PROTOCOL Protocol;
EFI_ATA_HC_WORK_MODE Mode;
LIST_ENTRY *Node;
EFI_ATA_DEVICE_INFO *DeviceInfo;
EFI_IDENTIFY_DATA *IdentifyData;
UINT64 Capacity;
UINT32 MaxSectorCount;
Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer, This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->OutDataBuffer, This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->Asb, This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
//
// convert the transfer length from sector count to byte.
//
if (((Packet->Length & EFI_ATA_PASS_THRU_LENGTH_BYTES) == 0) &&
(Packet->InTransferLength != 0)) {
Packet->InTransferLength = Packet->InTransferLength * 0x200;
}
//
// convert the transfer length from sector count to byte.
//
if (((Packet->Length & EFI_ATA_PASS_THRU_LENGTH_BYTES) == 0) &&
(Packet->OutTransferLength != 0)) {
Packet->OutTransferLength = Packet->OutTransferLength * 0x200;
}
Node = SearchDeviceInfoList (Instance, Port, PortMultiplierPort, EfiIdeHarddisk);
if (Node == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Check whether this device needs 48-bit addressing (ATAPI-6 ata device).
// Per ATA-6 spec, word83: bit15 is zero and bit14 is one.
// If bit10 is one, it means the ata device support 48-bit addressing.
//
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
IdentifyData = DeviceInfo->IdentifyData;
MaxSectorCount = 0x100;
if ((IdentifyData->AtaData.command_set_supported_83 & (BIT10 | BIT15 | BIT14)) == 0x4400) {
Capacity = *((UINT64 *)IdentifyData->AtaData.maximum_lba_for_48bit_addressing);
if (Capacity > 0xFFFFFFF) {
//
// Capacity exceeds 120GB. 48-bit addressing is really needed
// In this case, the max sector count is 0x10000
//
MaxSectorCount = 0x10000;
}
}
//
// If the data buffer described by InDataBuffer/OutDataBuffer and InTransferLength/OutTransferLength
// is too big to be transferred in a single command, then no data is transferred and EFI_BAD_BUFFER_SIZE
// is returned.
//
if (((Packet->InTransferLength != 0) && (Packet->InTransferLength > MaxSectorCount * 0x200)) ||
((Packet->OutTransferLength != 0) && (Packet->OutTransferLength > MaxSectorCount * 0x200))) {
return EFI_BAD_BUFFER_SIZE;
}
Status = EFI_UNSUPPORTED;
Protocol = Packet->Protocol;
Mode = Instance->Mode;
switch (Mode) {
case EfiAtaIdeMode:
//
// Reassign IDE mode io port registers' base addresses
//
Status = GetIdeRegisterIoAddr (Instance->PciIo, Instance->IdeRegisters);
if (EFI_ERROR (Status)) {
return Status;
}
switch (Protocol) {
case EFI_ATA_PASS_THRU_PROTOCOL_ATA_NON_DATA:
Status = AtaNonDataCommandIn(
Instance->PciIo,
&Instance->IdeRegisters[Port],
Packet->Acb,
Packet->Asb,
Packet->Timeout
);
break;
case EFI_ATA_PASS_THRU_PROTOCOL_PIO_DATA_IN:
Status = AtaPioDataInOut(
Instance->PciIo,
&Instance->IdeRegisters[Port],
Packet->InDataBuffer,
Packet->InTransferLength,
TRUE,
Packet->Acb,
Packet->Asb,
Packet->Timeout
);
break;
case EFI_ATA_PASS_THRU_PROTOCOL_PIO_DATA_OUT:
Status = AtaPioDataInOut(
Instance->PciIo,
&Instance->IdeRegisters[Port],
Packet->OutDataBuffer,
Packet->OutTransferLength,
FALSE,
Packet->Acb,
Packet->Asb,
Packet->Timeout
);
break;
case EFI_ATA_PASS_THRU_PROTOCOL_UDMA_DATA_IN:
Status = AtaUdmaInOut(
Instance->PciIo,
&Instance->IdeRegisters[Port],
TRUE,
Packet->InDataBuffer,
Packet->InTransferLength,
Packet->Acb,
Packet->Asb,
Packet->Timeout
);
break;
case EFI_ATA_PASS_THRU_PROTOCOL_UDMA_DATA_OUT:
Status = AtaUdmaInOut(
Instance->PciIo,
&Instance->IdeRegisters[Port],
FALSE,
Packet->OutDataBuffer,
Packet->OutTransferLength,
Packet->Acb,
Packet->Asb,
Packet->Timeout
);
break;
default :
return EFI_UNSUPPORTED;
}
break;
case EfiAtaAhciMode :
switch (Protocol) {
case EFI_ATA_PASS_THRU_PROTOCOL_ATA_NON_DATA:
Status = AhciNonDataTransfer(
Instance->PciIo,
&Instance->AhciRegisters,
(UINT8)Port,
(UINT8)PortMultiplierPort,
NULL,
0,
Packet->Acb,
Packet->Asb,
Packet->Timeout
);
break;
case EFI_ATA_PASS_THRU_PROTOCOL_PIO_DATA_IN:
Status = AhciPioTransfer(
Instance->PciIo,
&Instance->AhciRegisters,
(UINT8)Port,
(UINT8)PortMultiplierPort,
NULL,
0,
TRUE,
Packet->Acb,
Packet->Asb,
Packet->InDataBuffer,
Packet->InTransferLength,
Packet->Timeout
);
break;
case EFI_ATA_PASS_THRU_PROTOCOL_PIO_DATA_OUT:
Status = AhciPioTransfer(
Instance->PciIo,
&Instance->AhciRegisters,
(UINT8)Port,
(UINT8)PortMultiplierPort,
NULL,
0,
FALSE,
Packet->Acb,
Packet->Asb,
Packet->OutDataBuffer,
Packet->OutTransferLength,
Packet->Timeout
);
break;
case EFI_ATA_PASS_THRU_PROTOCOL_UDMA_DATA_IN:
Status = AhciDmaTransfer(
Instance->PciIo,
&Instance->AhciRegisters,
(UINT8)Port,
(UINT8)PortMultiplierPort,
NULL,
0,
TRUE,
Packet->Acb,
Packet->Asb,
Packet->InDataBuffer,
Packet->InTransferLength,
Packet->Timeout
);
break;
case EFI_ATA_PASS_THRU_PROTOCOL_UDMA_DATA_OUT:
Status = AhciDmaTransfer(
Instance->PciIo,
&Instance->AhciRegisters,
(UINT8)Port,
(UINT8)PortMultiplierPort,
NULL,
0,
FALSE,
Packet->Acb,
Packet->Asb,
Packet->OutDataBuffer,
Packet->OutTransferLength,
Packet->Timeout
);
break;
default :
return EFI_UNSUPPORTED;
}
break;
default:
Status = EFI_DEVICE_ERROR;
break;
}
return Status;
}
/**
Used to retrieve the list of legal port numbers for ATA devices on an ATA controller.
These can either be the list of ports where ATA devices are actually present or the
list of legal port numbers for the ATA controller. Regardless, the caller of this
function must probe the port number returned to see if an ATA device is actually
present at that location on the ATA controller.
The GetNextPort() function retrieves the port number on an ATA controller. If on input
Port is 0xFFFF, then the port number of the first port on the ATA controller is returned
in Port and EFI_SUCCESS is returned.
If Port is a port number that was returned on a previous call to GetNextPort(), then the
port number of the next port on the ATA controller is returned in Port, and EFI_SUCCESS
is returned. If Port is not 0xFFFF and Port was not returned on a previous call to
GetNextPort(), then EFI_INVALID_PARAMETER is returned.
If Port is the port number of the last port on the ATA controller, then EFI_NOT_FOUND is
returned.
@param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.
@param[in, out] Port On input, a pointer to the port number on the ATA controller.
On output, a pointer to the next port number on the ATA
controller. An input value of 0xFFFF retrieves the first port
number on the ATA controller.
@retval EFI_SUCCESS The next port number on the ATA controller was returned in Port.
@retval EFI_NOT_FOUND There are no more ports on this ATA controller.
@retval EFI_INVALID_PARAMETER Port is not 0xFFFF and Port was not returned on a previous call
to GetNextPort().
**/
EFI_STATUS
EFIAPI
AtaPassThruGetNextPort (
IN EFI_ATA_PASS_THRU_PROTOCOL *This,
IN OUT UINT16 *Port
)
{
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
LIST_ENTRY *Node;
EFI_ATA_DEVICE_INFO *DeviceInfo;
Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
if (Port == NULL) {
return EFI_INVALID_PARAMETER;
}
if (*Port == 0xFFFF) {
//
// If the Port is all 0xFF's, start to traverse the device list from the beginning
//
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if (DeviceInfo->Type == EfiIdeHarddisk) {
*Port = DeviceInfo->Port;
goto Exit;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return EFI_NOT_FOUND;
} else if (*Port == Instance->PreviousPort) {
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if ((DeviceInfo->Type == EfiIdeHarddisk) &&
(DeviceInfo->Port > *Port)){
*Port = DeviceInfo->Port;
goto Exit;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return EFI_NOT_FOUND;
} else {
//
// Port is not equal to 0xFFFF and also not equal to previous return value
//
return EFI_INVALID_PARAMETER;
}
Exit:
//
// Update the PreviousPort and PreviousPortMultiplier.
//
Instance->PreviousPort = *Port;
return EFI_SUCCESS;
}
/**
Used to retrieve the list of legal port multiplier port numbers for ATA devices on a port of an ATA
controller. These can either be the list of port multiplier ports where ATA devices are actually
present on port or the list of legal port multiplier ports on that port. Regardless, the caller of this
function must probe the port number and port multiplier port number returned to see if an ATA
device is actually present.
The GetNextDevice() function retrieves the port multiplier port number of an ATA device
present on a port of an ATA controller.
If PortMultiplierPort points to a port multiplier port number value that was returned on a
previous call to GetNextDevice(), then the port multiplier port number of the next ATA device
on the port of the ATA controller is returned in PortMultiplierPort, and EFI_SUCCESS is
returned.
If PortMultiplierPort points to 0xFFFF, then the port multiplier port number of the first
ATA device on port of the ATA controller is returned in PortMultiplierPort and
EFI_SUCCESS is returned.
If PortMultiplierPort is not 0xFFFF and the value pointed to by PortMultiplierPort
was not returned on a previous call to GetNextDevice(), then EFI_INVALID_PARAMETER
is returned.
If PortMultiplierPort is the port multiplier port number of the last ATA device on the port of
the ATA controller, then EFI_NOT_FOUND is returned.
@param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.
@param[in] Port The port number present on the ATA controller.
@param[in, out] PortMultiplierPort On input, a pointer to the port multiplier port number of an
ATA device present on the ATA controller.
If on input a PortMultiplierPort of 0xFFFF is specified,
then the port multiplier port number of the first ATA device
is returned. On output, a pointer to the port multiplier port
number of the next ATA device present on an ATA controller.
@retval EFI_SUCCESS The port multiplier port number of the next ATA device on the port
of the ATA controller was returned in PortMultiplierPort.
@retval EFI_NOT_FOUND There are no more ATA devices on this port of the ATA controller.
@retval EFI_INVALID_PARAMETER PortMultiplierPort is not 0xFFFF, and PortMultiplierPort was not
returned on a previous call to GetNextDevice().
**/
EFI_STATUS
EFIAPI
AtaPassThruGetNextDevice (
IN EFI_ATA_PASS_THRU_PROTOCOL *This,
IN UINT16 Port,
IN OUT UINT16 *PortMultiplierPort
)
{
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
LIST_ENTRY *Node;
EFI_ATA_DEVICE_INFO *DeviceInfo;
Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
if (PortMultiplierPort == NULL) {
return EFI_INVALID_PARAMETER;
}
if (*PortMultiplierPort == 0xFFFF) {
//
// If the PortMultiplierPort is all 0xFF's, start to traverse the device list from the beginning
//
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if ((DeviceInfo->Type == EfiIdeHarddisk) &&
(DeviceInfo->Port == Port)){
*PortMultiplierPort = DeviceInfo->PortMultiplier;
goto Exit;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return EFI_NOT_FOUND;
} else if (*PortMultiplierPort == Instance->PreviousPortMultiplier) {
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if ((DeviceInfo->Type == EfiIdeHarddisk) &&
(DeviceInfo->Port == Port) &&
(DeviceInfo->PortMultiplier > *PortMultiplierPort)){
*PortMultiplierPort = DeviceInfo->PortMultiplier;
goto Exit;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return EFI_NOT_FOUND;
} else {
//
// PortMultiplierPort is not equal to 0xFFFF and also not equal to previous return value
//
return EFI_INVALID_PARAMETER;
}
Exit:
//
// Update the PreviousPort and PreviousPortMultiplier.
//
Instance->PreviousPortMultiplier = *PortMultiplierPort;
return EFI_SUCCESS;
}
/**
Used to allocate and build a device path node for an ATA device on an ATA controller.
The BuildDevicePath() function allocates and builds a single device node for the ATA
device specified by Port and PortMultiplierPort. If the ATA device specified by Port and
PortMultiplierPort is not present on the ATA controller, then EFI_NOT_FOUND is returned.
If DevicePath is NULL, then EFI_INVALID_PARAMETER is returned. If there are not enough
resources to allocate the device path node, then EFI_OUT_OF_RESOURCES is returned.
Otherwise, DevicePath is allocated with the boot service AllocatePool(), the contents of
DevicePath are initialized to describe the ATA device specified by Port and PortMultiplierPort,
and EFI_SUCCESS is returned.
@param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.
@param[in] Port Port specifies the port number of the ATA device for which a
device path node is to be allocated and built.
@param[in] PortMultiplierPort The port multiplier port number of the ATA device for which a
device path node is to be allocated and built. If there is no
port multiplier, then specify 0.
@param[in, out] DevicePath A pointer to a single device path node that describes the ATA
device specified by Port and PortMultiplierPort. This function
is responsible for allocating the buffer DevicePath with the
boot service AllocatePool(). It is the caller's responsibility
to free DevicePath when the caller is finished with DevicePath.
@retval EFI_SUCCESS The device path node that describes the ATA device specified by
Port and PortMultiplierPort was allocated and returned in DevicePath.
@retval EFI_NOT_FOUND The ATA device specified by Port and PortMultiplierPort does not
exist on the ATA controller.
@retval EFI_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate DevicePath.
**/
EFI_STATUS
EFIAPI
AtaPassThruBuildDevicePath (
IN EFI_ATA_PASS_THRU_PROTOCOL *This,
IN UINT16 Port,
IN UINT16 PortMultiplierPort,
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
)
{
EFI_DEV_PATH *DevicePathNode;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
LIST_ENTRY *Node;
Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
//
// Validate parameters passed in.
//
if (DevicePath == NULL) {
return EFI_INVALID_PARAMETER;
}
Node = SearchDeviceInfoList(Instance, Port, PortMultiplierPort, EfiIdeHarddisk);
if (Node == NULL) {
return EFI_NOT_FOUND;
}
if (Instance->Mode == EfiAtaIdeMode) {
DevicePathNode = AllocateCopyPool (sizeof (ATAPI_DEVICE_PATH), &mAtapiDevicePathTemplate);
if (DevicePathNode == NULL) {
return EFI_OUT_OF_RESOURCES;
}
DevicePathNode->Atapi.PrimarySecondary = (UINT8) Port;
DevicePathNode->Atapi.SlaveMaster = (UINT8) PortMultiplierPort;
DevicePathNode->Atapi.Lun = 0;
} else {
DevicePathNode = AllocateCopyPool (sizeof (SATA_DEVICE_PATH), &mSataDevicePathTemplate);
if (DevicePathNode == NULL) {
return EFI_OUT_OF_RESOURCES;
}
DevicePathNode->Sata.HBAPortNumber = Port;
DevicePathNode->Sata.PortMultiplierPortNumber = PortMultiplierPort;
DevicePathNode->Sata.Lun = 0;
}
*DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) DevicePathNode;
return EFI_SUCCESS;
}
/**
Used to translate a device path node to a port number and port multiplier port number.
The GetDevice() function determines the port and port multiplier port number associated with
the ATA device described by DevicePath. If DevicePath is a device path node type that the
ATA Pass Thru driver supports, then the ATA Pass Thru driver will attempt to translate the contents
DevicePath into a port number and port multiplier port number.
If this translation is successful, then that port number and port multiplier port number are returned
in Port and PortMultiplierPort, and EFI_SUCCESS is returned.
If DevicePath, Port, or PortMultiplierPort are NULL, then EFI_INVALID_PARAMETER is returned.
If DevicePath is not a device path node type that the ATA Pass Thru driver supports, then
EFI_UNSUPPORTED is returned.
If DevicePath is a device path node type that the ATA Pass Thru driver supports, but there is not
a valid translation from DevicePath to a port number and port multiplier port number, then
EFI_NOT_FOUND is returned.
@param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.
@param[in] DevicePath A pointer to the device path node that describes an ATA device on the
ATA controller.
@param[out] Port On return, points to the port number of an ATA device on the ATA controller.
@param[out] PortMultiplierPort On return, points to the port multiplier port number of an ATA device
on the ATA controller.
@retval EFI_SUCCESS DevicePath was successfully translated to a port number and port multiplier
port number, and they were returned in Port and PortMultiplierPort.
@retval EFI_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_INVALID_PARAMETER Port is NULL.
@retval EFI_INVALID_PARAMETER PortMultiplierPort is NULL.
@retval EFI_UNSUPPORTED This driver does not support the device path node type in DevicePath.
@retval EFI_NOT_FOUND A valid translation from DevicePath to a port number and port multiplier
port number does not exist.
**/
EFI_STATUS
EFIAPI
AtaPassThruGetDevice (
IN EFI_ATA_PASS_THRU_PROTOCOL *This,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
OUT UINT16 *Port,
OUT UINT16 *PortMultiplierPort
)
{
EFI_DEV_PATH *DevicePathNode;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
LIST_ENTRY *Node;
Instance = ATA_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
//
// Validate parameters passed in.
//
if (DevicePath == NULL || Port == NULL || PortMultiplierPort == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Check whether the DevicePath belongs to SCSI_DEVICE_PATH or ATAPI_DEVICE_PATH
//
if ((DevicePath->Type != MESSAGING_DEVICE_PATH) ||
((DevicePath->SubType != MSG_SATA_DP) &&
(DevicePath->SubType != MSG_ATAPI_DP)) ||
((DevicePathNodeLength(DevicePath) != sizeof(ATAPI_DEVICE_PATH)) &&
(DevicePathNodeLength(DevicePath) != sizeof(SATA_DEVICE_PATH)))) {
return EFI_UNSUPPORTED;
}
DevicePathNode = (EFI_DEV_PATH *) DevicePath;
if (Instance->Mode == EfiAtaIdeMode) {
*Port = DevicePathNode->Atapi.PrimarySecondary;
*PortMultiplierPort = DevicePathNode->Atapi.SlaveMaster;
} else {
*Port = DevicePathNode->Sata.HBAPortNumber;
*PortMultiplierPort = DevicePathNode->Sata.PortMultiplierPortNumber;
}
Node = SearchDeviceInfoList(Instance, *Port, *PortMultiplierPort, EfiIdeHarddisk);
if (Node == NULL) {
return EFI_NOT_FOUND;
}
return EFI_SUCCESS;
}
/**
Resets a specific port on the ATA controller. This operation also resets all the ATA devices
connected to the port.
The ResetChannel() function resets an a specific port on an ATA controller. This operation
resets all the ATA devices connected to that port. If this ATA controller does not support
a reset port operation, then EFI_UNSUPPORTED is returned.
If a device error occurs while executing that port reset operation, then EFI_DEVICE_ERROR is
returned.
If a timeout occurs during the execution of the port reset operation, then EFI_TIMEOUT is returned.
If the port reset operation is completed, then EFI_SUCCESS is returned.
@param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.
@param[in] Port The port number on the ATA controller.
@retval EFI_SUCCESS The ATA controller port was reset.
@retval EFI_UNSUPPORTED The ATA controller does not support a port reset operation.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the ATA port.
@retval EFI_TIMEOUT A timeout occurred while attempting to reset the ATA port.
**/
EFI_STATUS
EFIAPI
AtaPassThruResetPort (
IN EFI_ATA_PASS_THRU_PROTOCOL *This,
IN UINT16 Port
)
{
return EFI_UNSUPPORTED;
}
/**
Resets an ATA device that is connected to an ATA controller.
The ResetDevice() function resets the ATA device specified by Port and PortMultiplierPort.
If this ATA controller does not support a device reset operation, then EFI_UNSUPPORTED is
returned.
If Port or PortMultiplierPort are not in a valid range for this ATA controller, then
EFI_INVALID_PARAMETER is returned.
If a device error occurs while executing that device reset operation, then EFI_DEVICE_ERROR
is returned.
If a timeout occurs during the execution of the device reset operation, then EFI_TIMEOUT is
returned.
If the device reset operation is completed, then EFI_SUCCESS is returned.
@param[in] This A pointer to the EFI_ATA_PASS_THRU_PROTOCOL instance.
@param[in] Port Port represents the port number of the ATA device to be reset.
@param[in] PortMultiplierPort The port multiplier port number of the ATA device to reset.
If there is no port multiplier, then specify 0.
@retval EFI_SUCCESS The ATA device specified by Port and PortMultiplierPort was reset.
@retval EFI_UNSUPPORTED The ATA controller does not support a device reset operation.
@retval EFI_INVALID_PARAMETER Port or PortMultiplierPort are invalid.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the ATA device
specified by Port and PortMultiplierPort.
@retval EFI_TIMEOUT A timeout occurred while attempting to reset the ATA device
specified by Port and PortMultiplierPort.
**/
EFI_STATUS
EFIAPI
AtaPassThruResetDevice (
IN EFI_ATA_PASS_THRU_PROTOCOL *This,
IN UINT16 Port,
IN UINT16 PortMultiplierPort
)
{
return EFI_UNSUPPORTED;
}
/**
Sends a SCSI Request Packet to a SCSI device that is attached to the SCSI channel. This function
supports both blocking I/O and nonblocking I/O. The blocking I/O functionality is required, and the
nonblocking I/O functionality is optional.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param Target The Target is an array of size TARGET_MAX_BYTES and it represents
the id of the SCSI device to send the SCSI Request Packet. Each
transport driver may choose to utilize a subset of this size to suit the needs
of transport target representation. For example, a Fibre Channel driver
may use only 8 bytes (WWN) to represent an FC target.
@param Lun The LUN of the SCSI device to send the SCSI Request Packet.
@param Packet A pointer to the SCSI Request Packet to send to the SCSI device
specified by Target and Lun.
@param Event If nonblocking I/O is not supported then Event is ignored, and blocking
I/O is performed. If Event is NULL, then blocking I/O is performed. If
Event is not NULL and non blocking I/O is supported, then
nonblocking I/O is performed, and Event will be signaled when the
SCSI Request Packet completes.
@retval EFI_SUCCESS The SCSI Request Packet was sent by the host. For bi-directional
commands, InTransferLength bytes were transferred from
InDataBuffer. For write and bi-directional commands,
OutTransferLength bytes were transferred by
OutDataBuffer.
@retval EFI_BAD_BUFFER_SIZE The SCSI Request Packet was not executed. The number of bytes that
could be transferred is returned in InTransferLength. For write
and bi-directional commands, OutTransferLength bytes were
transferred by OutDataBuffer.
@retval EFI_NOT_READY The SCSI Request Packet could not be sent because there are too many
SCSI Request Packets already queued. The caller may retry again later.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to send the SCSI Request
Packet.
@retval EFI_INVALID_PARAMETER Target, Lun, or the contents of ScsiRequestPacket are invalid.
@retval EFI_UNSUPPORTED The command described by the SCSI Request Packet is not supported
by the host adapter. This includes the case of Bi-directional SCSI
commands not supported by the implementation. The SCSI Request
Packet was not sent, so no additional status information is available.
@retval EFI_TIMEOUT A timeout occurred while waiting for the SCSI Request Packet to execute.
**/
EFI_STATUS
EFIAPI
ExtScsiPassThruPassThru (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun,
IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,
IN EFI_EVENT Event OPTIONAL
)
{
EFI_STATUS Status;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
UINT8 Port;
UINT8 PortMultiplier;
EFI_ATA_HC_WORK_MODE Mode;
LIST_ENTRY *Node;
EFI_ATA_DEVICE_INFO *DeviceInfo;
Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
if ((Packet == NULL) || (Packet->Cdb == NULL)) {
return EFI_INVALID_PARAMETER;
}
//
// Don't support variable length CDB
//
if ((Packet->CdbLength != 6) && (Packet->CdbLength != 10) &&
(Packet->CdbLength != 12) && (Packet->CdbLength != 16)) {
return EFI_INVALID_PARAMETER;
}
if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->InDataBuffer, This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->OutDataBuffer, This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
if ((This->Mode->IoAlign > 1) && !IS_ALIGNED(Packet->SenseData, This->Mode->IoAlign)) {
return EFI_INVALID_PARAMETER;
}
//
// For ATAPI device, doesn't support multiple LUN device.
//
if (Lun != 0) {
return EFI_INVALID_PARAMETER;
}
//
// The layout of Target array:
// ________________________________________________________________________
// | Byte 0 | Byte 1 | ... | TARGET_MAX_BYTES - 1 |
// |_____________________|_____________________|_____|______________________|
// | | The port multiplier | | |
// | The port number | port number | N/A | N/A |
// |_____________________|_____________________|_____|______________________|
//
// For ATAPI device, 2 bytes is enough to represent the location of SCSI device.
//
Port = Target[0];
PortMultiplier = Target[1];
Node = SearchDeviceInfoList(Instance, Port, PortMultiplier, EfiIdeCdrom);
if (Node == NULL) {
return EFI_INVALID_PARAMETER;
}
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
//
// ATA_CMD_IDENTIFY_DEVICE cmd is a ATA cmd but not a SCSI cmd.
// Normally it should NOT be passed down through ExtScsiPassThru protocol interface.
// But to response EFI_DISK_INFO.Identify() request from ScsiDisk, we should handle this command.
//
if (*((UINT8*)Packet->Cdb) == ATA_CMD_IDENTIFY_DEVICE) {
CopyMem (Packet->InDataBuffer, DeviceInfo->IdentifyData, sizeof (EFI_IDENTIFY_DATA));
return EFI_SUCCESS;
}
Mode = Instance->Mode;
switch (Mode) {
case EfiAtaIdeMode:
//
// Reassign IDE mode io port registers' base addresses
//
Status = GetIdeRegisterIoAddr (Instance->PciIo, Instance->IdeRegisters);
if (EFI_ERROR (Status)) {
return Status;
}
Status = AtaPacketCommandExecute (Instance->PciIo, &Instance->IdeRegisters[Port], Port, PortMultiplier, Packet);
break;
case EfiAtaAhciMode:
Status = AhciPacketCommandExecute (Instance->PciIo, &Instance->AhciRegisters, Port, PortMultiplier, Packet);
break;
default :
Status = EFI_DEVICE_ERROR;
break;
}
return Status;
}
/**
Used to retrieve the list of legal Target IDs and LUNs for SCSI devices on a SCSI channel. These
can either be the list SCSI devices that are actually present on the SCSI channel, or the list of legal
Target Ids and LUNs for the SCSI channel. Regardless, the caller of this function must probe the
Target ID and LUN returned to see if a SCSI device is actually present at that location on the SCSI
channel.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param Target On input, a pointer to the Target ID (an array of size
TARGET_MAX_BYTES) of a SCSI device present on the SCSI channel.
On output, a pointer to the Target ID (an array of
TARGET_MAX_BYTES) of the next SCSI device present on a SCSI
channel. An input value of 0xF(all bytes in the array are 0xF) in the
Target array retrieves the Target ID of the first SCSI device present on a
SCSI channel.
@param Lun On input, a pointer to the LUN of a SCSI device present on the SCSI
channel. On output, a pointer to the LUN of the next SCSI device present
on a SCSI channel.
@retval EFI_SUCCESS The Target ID and LUN of the next SCSI device on the SCSI
channel was returned in Target and Lun.
@retval EFI_INVALID_PARAMETER Target array is not all 0xF, and Target and Lun were
not returned on a previous call to GetNextTargetLun().
@retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel.
**/
EFI_STATUS
EFIAPI
ExtScsiPassThruGetNextTargetLun (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN OUT UINT8 **Target,
IN OUT UINT64 *Lun
)
{
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
LIST_ENTRY *Node;
EFI_ATA_DEVICE_INFO *DeviceInfo;
UINT8 *Target8;
UINT16 *Target16;
Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
if (Target == NULL || Lun == NULL) {
return EFI_INVALID_PARAMETER;
}
if (*Target == NULL) {
return EFI_INVALID_PARAMETER;
}
Target8 = *Target;
Target16 = (UINT16 *)*Target;
if (CompareMem(Target8, mScsiId, TARGET_MAX_BYTES) != 0) {
//
// For ATAPI device, we use 2 least significant bytes to represent the location of SCSI device.
// So the higher bytes in Target array should be 0xFF.
//
if (CompareMem (&Target8[2], &mScsiId[2], TARGET_MAX_BYTES - 2) != 0) {
return EFI_INVALID_PARAMETER;
}
//
// When Target is not all 0xFF's, compare 2 least significant bytes with
// previous target id to see if it is returned by previous call.
//
if ((*Target16 != Instance->PreviousTargetId) ||
(*Lun != Instance->PreviousLun)) {
return EFI_INVALID_PARAMETER;
}
//
// Traverse the whole device list to find the next cdrom closed to
// the device signified by Target[0] and Target[1].
//
// Note that we here use a tricky way to find the next cdrom :
// All ata devices are detected and inserted into the device list
// sequentially.
//
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if ((DeviceInfo->Type == EfiIdeCdrom) &&
((Target8[0] < DeviceInfo->Port) ||
(Target8[1] < DeviceInfo->PortMultiplier))) {
Target8[0] = (UINT8)DeviceInfo->Port;
Target8[1] = (UINT8)DeviceInfo->PortMultiplier;
goto Exit;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return EFI_NOT_FOUND;
} else {
//
// If the array is all 0xFF's, start to traverse the device list from the beginning
//
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if (DeviceInfo->Type == EfiIdeCdrom) {
Target8[0] = (UINT8)DeviceInfo->Port;
Target8[1] = (UINT8)DeviceInfo->PortMultiplier;
goto Exit;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return EFI_NOT_FOUND;
}
Exit:
*Lun = 0;
//
// Update the PreviousTargetId.
//
Instance->PreviousTargetId = *Target16;
Instance->PreviousLun = *Lun;
return EFI_SUCCESS;
}
/**
Used to allocate and build a device path node for a SCSI device on a SCSI channel.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param Target The Target is an array of size TARGET_MAX_BYTES and it specifies the
Target ID of the SCSI device for which a device path node is to be
allocated and built. Transport drivers may chose to utilize a subset of
this size to suit the representation of targets. For example, a Fibre
Channel driver may use only 8 bytes (WWN) in the array to represent a
FC target.
@param Lun The LUN of the SCSI device for which a device path node is to be
allocated and built.
@param DevicePath A pointer to a single device path node that describes the SCSI device
specified by Target and Lun. This function is responsible for
allocating the buffer DevicePath with the boot service
AllocatePool(). It is the caller's responsibility to free
DevicePath when the caller is finished with DevicePath.
@retval EFI_SUCCESS The device path node that describes the SCSI device specified by
Target and Lun was allocated and returned in
DevicePath.
@retval EFI_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_NOT_FOUND The SCSI devices specified by Target and Lun does not exist
on the SCSI channel.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate DevicePath.
**/
EFI_STATUS
EFIAPI
ExtScsiPassThruBuildDevicePath (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun,
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
)
{
EFI_DEV_PATH *DevicePathNode;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
UINT8 Port;
UINT8 PortMultiplier;
Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
Port = Target[0];
PortMultiplier = Target[1];
//
// Validate parameters passed in.
//
if (DevicePath == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// can not build device path for the SCSI Host Controller.
//
if (Lun != 0) {
return EFI_NOT_FOUND;
}
if (SearchDeviceInfoList(Instance, Port, PortMultiplier, EfiIdeCdrom) == NULL) {
return EFI_NOT_FOUND;
}
if (Instance->Mode == EfiAtaIdeMode) {
DevicePathNode = AllocateCopyPool (sizeof (ATAPI_DEVICE_PATH), &mAtapiDevicePathTemplate);
if (DevicePathNode == NULL) {
return EFI_OUT_OF_RESOURCES;
}
DevicePathNode->Atapi.PrimarySecondary = Port;
DevicePathNode->Atapi.SlaveMaster = PortMultiplier;
DevicePathNode->Atapi.Lun = (UINT16) Lun;
} else {
DevicePathNode = AllocateCopyPool (sizeof (SATA_DEVICE_PATH), &mSataDevicePathTemplate);
if (DevicePathNode == NULL) {
return EFI_OUT_OF_RESOURCES;
}
DevicePathNode->Sata.HBAPortNumber = Port;
DevicePathNode->Sata.PortMultiplierPortNumber = PortMultiplier;
DevicePathNode->Sata.Lun = (UINT16) Lun;
}
*DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) DevicePathNode;
return EFI_SUCCESS;
}
/**
Used to translate a device path node to a Target ID and LUN.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param DevicePath A pointer to a single device path node that describes the SCSI device
on the SCSI channel.
@param Target A pointer to the Target Array which represents the ID of a SCSI device
on the SCSI channel.
@param Lun A pointer to the LUN of a SCSI device on the SCSI channel.
@retval EFI_SUCCESS DevicePath was successfully translated to a Target ID and
LUN, and they were returned in Target and Lun.
@retval EFI_INVALID_PARAMETER DevicePath or Target or Lun is NULL.
@retval EFI_NOT_FOUND A valid translation from DevicePath to a Target ID and LUN
does not exist.
@retval EFI_UNSUPPORTED This driver does not support the device path node type in
DevicePath.
**/
EFI_STATUS
EFIAPI
ExtScsiPassThruGetTargetLun (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
OUT UINT8 **Target,
OUT UINT64 *Lun
)
{
EFI_DEV_PATH *DevicePathNode;
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
LIST_ENTRY *Node;
Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
//
// Validate parameters passed in.
//
if (DevicePath == NULL || Target == NULL || Lun == NULL) {
return EFI_INVALID_PARAMETER;
}
if (*Target == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Check whether the DevicePath belongs to SCSI_DEVICE_PATH
//
if ((DevicePath->Type != MESSAGING_DEVICE_PATH) ||
((DevicePath->SubType != MSG_ATAPI_DP) &&
(DevicePath->SubType != MSG_SATA_DP)) ||
((DevicePathNodeLength(DevicePath) != sizeof(ATAPI_DEVICE_PATH)) &&
(DevicePathNodeLength(DevicePath) != sizeof(SATA_DEVICE_PATH)))) {
return EFI_UNSUPPORTED;
}
SetMem (*Target, TARGET_MAX_BYTES, 0xFF);
DevicePathNode = (EFI_DEV_PATH *) DevicePath;
if (Instance->Mode == EfiAtaIdeMode) {
(*Target)[0] = (UINT8) DevicePathNode->Atapi.PrimarySecondary;
(*Target)[1] = (UINT8) DevicePathNode->Atapi.SlaveMaster;
*Lun = (UINT8) DevicePathNode->Atapi.Lun;
} else {
(*Target)[0] = (UINT8) DevicePathNode->Sata.HBAPortNumber;
(*Target)[1] = (UINT8) DevicePathNode->Sata.PortMultiplierPortNumber;
*Lun = (UINT8) DevicePathNode->Sata.Lun;
}
Node = SearchDeviceInfoList(Instance, (*Target)[0], (*Target)[1], EfiIdeCdrom);
if (Node == NULL) {
return EFI_NOT_FOUND;
}
if (*Lun != 0) {
return EFI_NOT_FOUND;
}
return EFI_SUCCESS;
}
/**
Resets a SCSI channel. This operation resets all the SCSI devices connected to the SCSI channel.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@retval EFI_SUCCESS The SCSI channel was reset.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI channel.
@retval EFI_TIMEOUT A timeout occurred while attempting to reset the SCSI channel.
@retval EFI_UNSUPPORTED The SCSI channel does not support a channel reset operation.
**/
EFI_STATUS
EFIAPI
ExtScsiPassThruResetChannel (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This
)
{
return EFI_UNSUPPORTED;
}
/**
Resets a SCSI logical unit that is connected to a SCSI channel.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param Target The Target is an array of size TARGET_MAX_BYTE and it represents the
target port ID of the SCSI device containing the SCSI logical unit to
reset. Transport drivers may chose to utilize a subset of this array to suit
the representation of their targets.
@param Lun The LUN of the SCSI device to reset.
@retval EFI_SUCCESS The SCSI device specified by Target and Lun was reset.
@retval EFI_INVALID_PARAMETER Target or Lun is NULL.
@retval EFI_TIMEOUT A timeout occurred while attempting to reset the SCSI device
specified by Target and Lun.
@retval EFI_UNSUPPORTED The SCSI channel does not support a target reset operation.
@retval EFI_DEVICE_ERROR A device error occurred while attempting to reset the SCSI device
specified by Target and Lun.
**/
EFI_STATUS
EFIAPI
ExtScsiPassThruResetTargetLun (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT8 *Target,
IN UINT64 Lun
)
{
return EFI_UNSUPPORTED;
}
/**
Used to retrieve the list of legal Target IDs for SCSI devices on a SCSI channel. These can either
be the list SCSI devices that are actually present on the SCSI channel, or the list of legal Target IDs
for the SCSI channel. Regardless, the caller of this function must probe the Target ID returned to
see if a SCSI device is actually present at that location on the SCSI channel.
@param This A pointer to the EFI_EXT_SCSI_PASS_THRU_PROTOCOL instance.
@param Target (TARGET_MAX_BYTES) of a SCSI device present on the SCSI channel.
On output, a pointer to the Target ID (an array of
TARGET_MAX_BYTES) of the next SCSI device present on a SCSI
channel. An input value of 0xF(all bytes in the array are 0xF) in the
Target array retrieves the Target ID of the first SCSI device present on a
SCSI channel.
@retval EFI_SUCCESS The Target ID of the next SCSI device on the SCSI
channel was returned in Target.
@retval EFI_INVALID_PARAMETER Target or Lun is NULL.
@retval EFI_TIMEOUT Target array is not all 0xF, and Target was not
returned on a previous call to GetNextTarget().
@retval EFI_NOT_FOUND There are no more SCSI devices on this SCSI channel.
**/
EFI_STATUS
EFIAPI
ExtScsiPassThruGetNextTarget (
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *This,
IN OUT UINT8 **Target
)
{
ATA_ATAPI_PASS_THRU_INSTANCE *Instance;
LIST_ENTRY *Node;
EFI_ATA_DEVICE_INFO *DeviceInfo;
UINT8 *Target8;
UINT16 *Target16;
Instance = EXT_SCSI_PASS_THRU_PRIVATE_DATA_FROM_THIS (This);
if (Target == NULL || *Target == NULL) {
return EFI_INVALID_PARAMETER;
}
Target8 = *Target;
Target16 = (UINT16 *)*Target;
if (CompareMem(Target8, mScsiId, TARGET_MAX_BYTES) != 0) {
//
// For ATAPI device, we use 2 least significant bytes to represent the location of SCSI device.
// So the higher bytes in Target array should be 0xFF.
//
if (CompareMem (&Target8[2], &mScsiId[2], TARGET_MAX_BYTES - 2) != 0) {
return EFI_INVALID_PARAMETER;
}
//
// When Target is not all 0xFF's, compare 2 least significant bytes with
// previous target id to see if it is returned by previous call.
//
if (*Target16 != Instance->PreviousTargetId) {
return EFI_INVALID_PARAMETER;
}
//
// Traverse the whole device list to find the next cdrom closed to
// the device signified by Target[0] and Target[1].
//
// Note that we here use a tricky way to find the next cdrom :
// All ata devices are detected and inserted into the device list
// sequentially.
//
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if ((DeviceInfo->Type == EfiIdeCdrom) &&
((Target8[0] < DeviceInfo->Port) ||
(Target8[1] < DeviceInfo->PortMultiplier))) {
Target8[0] = (UINT8)DeviceInfo->Port;
Target8[1] = (UINT8)DeviceInfo->PortMultiplier;
goto Exit;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return EFI_NOT_FOUND;
} else {
//
// If the array is all 0xFF's, start to traverse the device list from the beginning
//
Node = GetFirstNode (&Instance->DeviceList);
while (!IsNull (&Instance->DeviceList, Node)) {
DeviceInfo = ATA_ATAPI_DEVICE_INFO_FROM_THIS (Node);
if (DeviceInfo->Type == EfiIdeCdrom) {
Target8[0] = (UINT8)DeviceInfo->Port;
Target8[1] = (UINT8)DeviceInfo->PortMultiplier;
goto Exit;
}
Node = GetNextNode (&Instance->DeviceList, Node);
}
return EFI_NOT_FOUND;
}
Exit:
//
// Update the PreviousTargetId.
//
Instance->PreviousTargetId = *Target16;
return EFI_SUCCESS;
}