/** @file
Copyright (c) 2006, 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 "AtapiPassThru.h"
///
/// IDE registers' fixed address
///
static IDE_BASE_REGISTERS gAtapiIoPortRegisters[2] = {
{ 0x1f0, { 0x1f1 }, 0x1f2, 0x1f3, 0x1f4, 0x1f5, 0x1f6, { 0x1f7 }, { 0x3f6 }, 0x3f7, 0 },
{ 0x170, { 0x171 }, 0x172, 0x173, 0x174, 0x175, 0x176, { 0x177 }, { 0x376 }, 0x377, 0 }
};
static SCSI_COMMAND_SET gEndTable = { 0xff, (DATA_DIRECTION) 0xff };
///
/// This table contains all the supported ATAPI commands.
///
static SCSI_COMMAND_SET gSupportedATAPICommands[] = {
{ OP_INQUIRY, DataIn },
{ OP_LOAD_UNLOAD_CD, NoData },
{ OP_MECHANISM_STATUS, DataIn },
{ OP_MODE_SELECT_10, DataOut },
{ OP_MODE_SENSE_10, DataIn },
{ OP_PAUSE_RESUME, NoData },
{ OP_PLAY_AUDIO_10, DataIn },
{ OP_PLAY_AUDIO_MSF, DataIn },
{ OP_PLAY_CD, DataIn },
{ OP_PLAY_CD_MSF, DataIn },
{ OP_PREVENT_ALLOW_MEDIUM_REMOVAL,NoData },
{ OP_READ_10, DataIn },
{ OP_READ_12, DataIn },
{ OP_READ_CAPACITY, DataIn },
{ OP_READ_CD, DataIn },
{ OP_READ_CD_MSF, DataIn },
{ OP_READ_HEADER, DataIn },
{ OP_READ_SUB_CHANNEL, DataIn },
{ OP_READ_TOC, DataIn },
{ OP_REQUEST_SENSE, DataIn },
{ OP_SCAN, NoData },
{ OP_SEEK_10, NoData },
{ OP_SET_CD_SPEED, DataOut },
{ OP_STOPPLAY_SCAN, NoData },
{ OP_START_STOP_UNIT, NoData },
{ OP_TEST_UNIT_READY, NoData },
{ OP_FORMAT_UNIT, DataOut },
{ OP_READ_FORMAT_CAPACITIES, DataIn },
{ OP_VERIFY, DataOut },
{ OP_WRITE_10, DataOut },
{ OP_WRITE_12, DataOut },
{ OP_WRITE_AND_VERIFY, DataOut },
{ 0xff, (DATA_DIRECTION) 0xff }
};
static CHAR16 *gControllerNameString = (CHAR16 *) L"ATAPI Controller";
static CHAR16 *gAtapiChannelString = (CHAR16 *) L"ATAPI Channel";
EFI_DRIVER_BINDING_PROTOCOL gAtapiScsiPassThruDriverBinding = {
AtapiScsiPassThruDriverBindingSupported,
AtapiScsiPassThruDriverBindingStart,
AtapiScsiPassThruDriverBindingStop,
0xa,
NULL,
NULL
};
/**
Supported.
(Standard DriverBinding Protocol Supported() function)
@return EFI_STATUS
@todo This - add argument and description to function comment
@todo Controller - add argument and description to function comment
@todo RemainingDevicePath - add argument and description to function comment
@todo EFI_UNSUPPORTED - add return value to function comment
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
PCI_TYPE00 Pci;
//
// Open the IO Abstraction(s) needed to perform the supported test
//
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Use the PCI I/O Protocol to see if Controller is a IDE Controller that
// can be managed by this driver. Read the PCI Configuration Header
// for this device.
//
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint32,
0,
sizeof (Pci) / sizeof (UINT32),
&Pci
);
if (EFI_ERROR (Status)) {
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_UNSUPPORTED;
}
if (Pci.Hdr.ClassCode[2] != PCI_CLASS_MASS_STORAGE || Pci.Hdr.ClassCode[1] != PCI_CLASS_IDE) {
Status = EFI_UNSUPPORTED;
}
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
/**
Create handles for IDE channels specified by RemainingDevicePath.
Install SCSI Pass Thru Protocol onto each created handle.
(Standard DriverBinding Protocol Start() function)
@return EFI_STATUS
@todo This - add argument and description to function comment
@todo Controller - add argument and description to function comment
@todo RemainingDevicePath - add argument and description to function comment
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
{
EFI_STATUS Status;
EFI_PCI_IO_PROTOCOL *PciIo;
PciIo = NULL;
Status = gBS->OpenProtocol (
Controller,
&gEfiPciIoProtocolGuid,
(VOID **) &PciIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationEnable,
EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO | EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO | EFI_PCI_DEVICE_ENABLE,
NULL
);
if (EFI_ERROR (Status)) {
goto Done;
}
//
// Create SCSI Pass Thru instance for the IDE channel.
//
Status = RegisterAtapiScsiPassThru (This, Controller, PciIo);
Done:
if (EFI_ERROR (Status)) {
if (PciIo) {
PciIo->Attributes (
PciIo,
EfiPciIoAttributeOperationDisable,
EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO | EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO | EFI_PCI_DEVICE_ENABLE,
NULL
);
}
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
}
return Status;
}
/**
Stop.
(Standard DriverBinding Protocol Stop() function)
@return EFI_STATUS
@todo This - add argument and description to function comment
@todo Controller - add argument and description to function comment
@todo NumberOfChildren - add argument and description to function comment
@todo ChildHandleBuffer - add argument and description to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
{
EFI_STATUS Status;
EFI_SCSI_PASS_THRU_PROTOCOL *ScsiPassThru;
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate;
Status = gBS->OpenProtocol (
Controller,
&gEfiScsiPassThruProtocolGuid,
(VOID **) &ScsiPassThru,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
return Status;
}
AtapiScsiPrivate = ATAPI_SCSI_PASS_THRU_DEV_FROM_THIS (ScsiPassThru);
Status = gBS->UninstallProtocolInterface (
Controller,
&gEfiScsiPassThruProtocolGuid,
&AtapiScsiPrivate->ScsiPassThru
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Release Pci Io protocol on the controller handle.
//
AtapiScsiPrivate->PciIo->Attributes (
AtapiScsiPrivate->PciIo,
EfiPciIoAttributeOperationDisable,
EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO | EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO | EFI_PCI_DEVICE_ENABLE,
NULL
);
gBS->CloseProtocol (
Controller,
&gEfiPciIoProtocolGuid,
This->DriverBindingHandle,
Controller
);
gBS->FreePool (AtapiScsiPrivate);
return EFI_SUCCESS;
}
/**
Attaches SCSI Pass Thru Protocol for specified IDE channel.
@param Controller: Parent device handle to the IDE channel.
@param PciIo: PCI I/O protocol attached on the "Controller".
@return EFI_SUCCESS Always returned unless installing SCSI Pass Thru Protocol failed.
@todo This - add argument and description to function comment
@todo Controller - add argument and description to function comment
@todo PciIo - add argument and description to function comment
@todo EFI_OUT_OF_RESOURCES - add return value to function comment
**/
EFI_STATUS
RegisterAtapiScsiPassThru (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_PCI_IO_PROTOCOL *PciIo
)
{
EFI_STATUS Status;
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate;
UINT64 Attributes;
AtapiScsiPrivate = AllocateZeroPool (sizeof (ATAPI_SCSI_PASS_THRU_DEV));
if (AtapiScsiPrivate == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Attributes = EFI_PCI_IO_ATTRIBUTE_IDE_PRIMARY_IO | EFI_PCI_IO_ATTRIBUTE_IDE_SECONDARY_IO | EFI_PCI_DEVICE_ENABLE;
CopyMem (AtapiScsiPrivate->ChannelName, gAtapiChannelString, sizeof (gAtapiChannelString));
//
// Enable channel
//
PciIo->Attributes (PciIo, EfiPciIoAttributeOperationSet, Attributes, NULL);
AtapiScsiPrivate->Signature = ATAPI_SCSI_PASS_THRU_DEV_SIGNATURE;
AtapiScsiPrivate->Handle = Controller;
//
// will reset the IoPort inside each API function.
//
AtapiScsiPrivate->IoPort = gAtapiIoPortRegisters;
AtapiScsiPrivate->PciIo = PciIo;
//
// initialize SCSI Pass Thru Protocol interface
//
AtapiScsiPrivate->ScsiPassThru.Mode = &AtapiScsiPrivate->ScsiPassThruMode;
AtapiScsiPrivate->ScsiPassThru.PassThru = AtapiScsiPassThruFunction;
AtapiScsiPrivate->ScsiPassThru.GetNextDevice = AtapiScsiPassThruGetNextDevice;
AtapiScsiPrivate->ScsiPassThru.BuildDevicePath = AtapiScsiPassThruBuildDevicePath;
AtapiScsiPrivate->ScsiPassThru.GetTargetLun = AtapiScsiPassThruGetTargetLun;
AtapiScsiPrivate->ScsiPassThru.ResetChannel = AtapiScsiPassThruResetChannel;
AtapiScsiPrivate->ScsiPassThru.ResetTarget = AtapiScsiPassThruResetTarget;
//
// Set Mode
//
CopyMem (AtapiScsiPrivate->ControllerName, gControllerNameString, sizeof (gControllerNameString));
AtapiScsiPrivate->ScsiPassThruMode.ControllerName = AtapiScsiPrivate->ControllerName;
AtapiScsiPrivate->ScsiPassThruMode.ChannelName = AtapiScsiPrivate->ChannelName;
AtapiScsiPrivate->ScsiPassThruMode.AdapterId = 4;
//
// non-RAID SCSI controllers should set both physical and logical attributes
//
AtapiScsiPrivate->ScsiPassThruMode.Attributes = EFI_SCSI_PASS_THRU_ATTRIBUTES_PHYSICAL |
EFI_SCSI_PASS_THRU_ATTRIBUTES_LOGICAL;
AtapiScsiPrivate->ScsiPassThruMode.IoAlign = 0;
//
// Initialize the LatestTargetId to 0xFFFFFFFF (for the GetNextDevice() call).
//
AtapiScsiPrivate->LatestTargetId = 0xFFFFFFFF;
AtapiScsiPrivate->LatestLun = 0;
Status = gBS->InstallProtocolInterface (
&Controller,
&gEfiScsiPassThruProtocolGuid,
EFI_NATIVE_INTERFACE,
&AtapiScsiPrivate->ScsiPassThru
);
return Status;
}
/**
Implements EFI_SCSI_PASS_THRU_PROTOCOL.PassThru() function.
@param This The EFI_SCSI_PASS_THRU_PROTOCOL instance.
@param Target The Target ID of the ATAPI device to send the SCSI
Request Packet. To ATAPI devices attached on an IDE
Channel, Target ID 0 indicates Master device;Target
ID 1 indicates Slave device.
@param Lun The LUN of the ATAPI device to send the SCSI Request
Packet. To the ATAPI device, Lun is always 0.
@param Packet The SCSI Request Packet to send to the ATAPI device
specified by Target and Lun.
@param 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 SCSI Request Packet completes.
@todo This - add argument and description to function comment
@todo EFI_INVALID_PARAMETER - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruFunction (
IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT32 Target,
IN UINT64 Lun,
IN OUT EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet,
IN EFI_EVENT Event OPTIONAL
)
{
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate;
EFI_STATUS Status;
AtapiScsiPrivate = ATAPI_SCSI_PASS_THRU_DEV_FROM_THIS (This);
//
// Target is not allowed beyond MAX_TARGET_ID
//
if (Target > MAX_TARGET_ID) {
return EFI_INVALID_PARAMETER;
}
//
// check the data fields in Packet parameter.
//
Status = CheckSCSIRequestPacket (Packet);
if (EFI_ERROR (Status)) {
return Status;
}
//
// If Request Packet targets at the IDE channel itself,
// do nothing.
//
if (Target == This->Mode->AdapterId) {
Packet->TransferLength = 0;
return EFI_SUCCESS;
}
//
// According to Target ID, reset the Atapi I/O Register mapping
// (Target Id in [0,1] area, using gAtapiIoPortRegisters[0],
// Target Id in [2,3] area, using gAtapiIoPortRegisters[1]
//
if ((Target / 2) == 0) {
AtapiScsiPrivate->IoPort = &gAtapiIoPortRegisters[0];
} else {
AtapiScsiPrivate->IoPort = &gAtapiIoPortRegisters[1];
}
//
// the ATAPI SCSI interface does not support non-blocking I/O
// ignore the Event parameter
//
// Performs blocking I/O.
//
Status = SubmitBlockingIoCommand (AtapiScsiPrivate, Target, Packet);
return Status;
}
/**
Used to retrieve the list of legal Target IDs for SCSI devices
on a SCSI channel.
@param This Protocol instance pointer.
@param Target On input, a pointer to the Target ID of a SCSI
device present on the SCSI channel. On output,
a pointer to the Target ID of the next SCSI device
present on a SCSI channel. An input value of
0xFFFFFFFF 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_NOT_FOUND There are no more SCSI devices on this SCSI channel.
@retval EFI_INVALID_PARAMETER Target is not 0xFFFFFFFF,and Target and Lun were not
returned on a previous call to GetNextDevice().
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruGetNextDevice (
IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
IN OUT UINT32 *Target,
IN OUT UINT64 *Lun
)
{
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate;
//
// Retrieve Device Private Data Structure.
//
AtapiScsiPrivate = ATAPI_SCSI_PASS_THRU_DEV_FROM_THIS (This);
//
// Check whether Target is valid.
//
if (Target == NULL || Lun == NULL) {
return EFI_INVALID_PARAMETER;
}
if ((*Target != 0xFFFFFFFF) &&
((*Target != AtapiScsiPrivate->LatestTargetId) ||
(*Lun != AtapiScsiPrivate->LatestLun))) {
return EFI_INVALID_PARAMETER;
}
if (*Target == MAX_TARGET_ID) {
return EFI_NOT_FOUND;
}
if (*Target == 0xFFFFFFFF) {
*Target = 0;
} else {
*Target = AtapiScsiPrivate->LatestTargetId + 1;
}
*Lun = 0;
//
// Update the LatestTargetId.
//
AtapiScsiPrivate->LatestTargetId = *Target;
AtapiScsiPrivate->LatestLun = *Lun;
return EFI_SUCCESS;
}
/**
Used to allocate and build a device path node for a SCSI device
on a SCSI channel. Would not build device path for a SCSI Host Controller.
@param This Protocol instance pointer.
@param Target The Target ID of the SCSI device for which
a device path node is to be allocated and built.
@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_NOT_FOUND The SCSI devices specified by Target and Lun does
not exist on the SCSI channel.
@retval EFI_INVALID_PARAMETER DevicePath is NULL.
@retval EFI_OUT_OF_RESOURCES There are not enough resources to allocate
DevicePath.
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruBuildDevicePath (
IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT32 Target,
IN UINT64 Lun,
IN OUT EFI_DEVICE_PATH_PROTOCOL **DevicePath
)
{
EFI_DEV_PATH *Node;
//
// Validate parameters passed in.
//
if (DevicePath == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// can not build device path for the SCSI Host Controller.
//
if ((Target > (MAX_TARGET_ID - 1)) || (Lun != 0)) {
return EFI_NOT_FOUND;
}
Node = AllocateZeroPool (sizeof (EFI_DEV_PATH));
if (Node == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Node->DevPath.Type = MESSAGING_DEVICE_PATH;
Node->DevPath.SubType = MSG_ATAPI_DP;
SetDevicePathNodeLength (&Node->DevPath, sizeof (ATAPI_DEVICE_PATH));
Node->Atapi.PrimarySecondary = (UINT8) (Target / 2);
Node->Atapi.SlaveMaster = (UINT8) (Target % 2);
Node->Atapi.Lun = (UINT16) Lun;
*DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) Node;
return EFI_SUCCESS;
}
/**
Used to translate a device path node to a Target ID and LUN.
@param This Protocol instance pointer.
@param DevicePath A pointer to the device path node that
describes a SCSI device on the SCSI channel.
@param Target A pointer to the Target 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 is NULL.
@retval EFI_INVALID_PARAMETER Target is NULL.
@retval EFI_INVALID_PARAMETER Lun 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
Target ID and LUN does not exist.
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruGetTargetLun (
IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
OUT UINT32 *Target,
OUT UINT64 *Lun
)
{
EFI_DEV_PATH *Node;
//
// Validate parameters passed in.
//
if (DevicePath == NULL || Target == NULL || Lun == 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) ||
(DevicePathNodeLength(DevicePath) != sizeof(ATAPI_DEVICE_PATH))) {
return EFI_UNSUPPORTED;
}
Node = (EFI_DEV_PATH *) DevicePath;
*Target = Node->Atapi.PrimarySecondary * 2 + Node->Atapi.SlaveMaster;
*Lun = Node->Atapi.Lun;
if (*Target > (MAX_TARGET_ID - 1) || *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 Protocol instance pointer.
@retval EFI_SUCCESS The SCSI channel was reset.
@retval EFI_UNSUPPORTED The SCSI channel does not support
a channel reset operation.
@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.
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruResetChannel (
IN EFI_SCSI_PASS_THRU_PROTOCOL *This
)
{
UINT8 DeviceControlValue;
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate;
UINT8 Index;
AtapiScsiPrivate = ATAPI_SCSI_PASS_THRU_DEV_FROM_THIS (This);
//
// Reset both Primary channel and Secondary channel.
// so, the IoPort pointer must point to the right I/O Register group
//
for (Index = 0; Index < 2; Index++) {
//
// Reset
//
AtapiScsiPrivate->IoPort = &gAtapiIoPortRegisters[Index];
DeviceControlValue = 0;
//
// set SRST bit to initiate soft reset
//
DeviceControlValue |= SRST;
//
// disable Interrupt
//
DeviceControlValue |= bit (1);
WritePortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Alt.DeviceControl,
DeviceControlValue
);
//
// Wait 10us
//
gBS->Stall (10);
//
// Clear SRST bit
// 0xfb:1111,1011
//
DeviceControlValue &= 0xfb;
WritePortB (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->Alt.DeviceControl, DeviceControlValue);
//
// slave device needs at most 31s to clear BSY
//
if (StatusWaitForBSYClear (AtapiScsiPrivate, 31000) == EFI_TIMEOUT) {
return EFI_DEVICE_ERROR;
}
}
return EFI_SUCCESS;
}
/**
Resets a SCSI device that is connected to a SCSI channel.
@param This Protocol instance pointer.
@param Target The Target ID of the SCSI device to reset.
@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_UNSUPPORTED The SCSI channel does not support a target
reset operation.
@retval EFI_INVALID_PARAMETER Target or Lun are invalid.
@retval EFI_DEVICE_ERROR A device error occurred while attempting
to reset the SCSI device specified by Target
and Lun.
@retval EFI_TIMEOUT A timeout occurred while attempting to reset
the SCSI device specified by Target and Lun.
**/
EFI_STATUS
EFIAPI
AtapiScsiPassThruResetTarget (
IN EFI_SCSI_PASS_THRU_PROTOCOL *This,
IN UINT32 Target,
IN UINT64 Lun
)
{
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate;
UINT8 Command;
UINT8 DeviceSelect;
AtapiScsiPrivate = ATAPI_SCSI_PASS_THRU_DEV_FROM_THIS (This);
if (Target > MAX_TARGET_ID) {
return EFI_INVALID_PARAMETER;
}
//
// Directly return EFI_SUCCESS if want to reset the host controller
//
if (Target == This->Mode->AdapterId) {
return EFI_SUCCESS;
}
//
// According to Target ID, reset the Atapi I/O Register mapping
// (Target Id in [0,1] area, using gAtapiIoPortRegisters[0],
// Target Id in [2,3] area, using gAtapiIoPortRegisters[1]
//
if ((Target / 2) == 0) {
AtapiScsiPrivate->IoPort = &gAtapiIoPortRegisters[0];
} else {
AtapiScsiPrivate->IoPort = &gAtapiIoPortRegisters[1];
}
//
// for ATAPI device, no need to wait DRDY ready after device selecting.
//
// bit7 and bit5 are both set to 1 for backward compatibility
//
DeviceSelect = (UINT8) (((bit (7) | bit (5)) | (Target << 4)));
WritePortB (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->Head, DeviceSelect);
Command = ATAPI_SOFT_RESET_CMD;
WritePortB (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->Reg.Command, Command);
//
// BSY clear is the only status return to the host by the device
// when reset is complete.
// slave device needs at most 31s to clear BSY
//
if (EFI_ERROR (StatusWaitForBSYClear (AtapiScsiPrivate, 31000))) {
return EFI_DEVICE_ERROR;
}
//
// stall 5 seconds to make the device status stable
//
gBS->Stall (5000000);
return EFI_SUCCESS;
}
/**
Checks the parameters in the SCSI Request Packet to make sure
they are valid for a SCSI Pass Thru request.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo Packet - add argument and description to function comment
@todo EFI_INVALID_PARAMETER - add return value to function comment
@todo EFI_INVALID_PARAMETER - add return value to function comment
@todo EFI_INVALID_PARAMETER - add return value to function comment
@todo EFI_UNSUPPORTED - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
CheckSCSIRequestPacket (
EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet
)
{
if (Packet == NULL) {
return EFI_INVALID_PARAMETER;
}
if (!ValidCdbLength (Packet->CdbLength)) {
return EFI_INVALID_PARAMETER;
}
if (Packet->Cdb == NULL) {
return EFI_INVALID_PARAMETER;
}
//
// Checks whether the request command is supported.
//
if (!IsCommandValid (Packet)) {
return EFI_UNSUPPORTED;
}
return EFI_SUCCESS;
}
/**
Checks the requested SCSI command:
Is it supported by this driver?
Is the Data transfer direction reasonable?
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo Packet - add argument and description to function comment
**/
BOOLEAN
IsCommandValid (
EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet
)
{
UINT8 Index;
UINT8 *OpCode;
OpCode = (UINT8 *) (Packet->Cdb);
for (Index = 0; CompareMem (&gSupportedATAPICommands[Index], &gEndTable, sizeof (SCSI_COMMAND_SET)); Index++) {
if (*OpCode == gSupportedATAPICommands[Index].OpCode) {
//
// Check whether the requested Command is supported by this driver
//
if (Packet->DataDirection == DataIn) {
//
// Check whether the requested data direction conforms to
// what it should be.
//
if (gSupportedATAPICommands[Index].Direction == DataOut) {
return FALSE;
}
}
if (Packet->DataDirection == DataOut) {
//
// Check whether the requested data direction conforms to
// what it should be.
//
if (gSupportedATAPICommands[Index].Direction == DataIn) {
return FALSE;
}
}
return TRUE;
}
}
return FALSE;
}
/**
Performs blocking I/O request.
@param AtapiScsiPrivate Private data structure for the specified channel.
@param Target The Target ID of the ATAPI device to send the SCSI
Request Packet. To ATAPI devices attached on an IDE
Channel, Target ID 0 indicates Master device;Target
ID 1 indicates Slave device.
@param Packet The SCSI Request Packet to send to the ATAPI device
specified by Target.
@todo AtapiScsiPrivate - add argument and description to function comment
**/
EFI_STATUS
SubmitBlockingIoCommand (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT32 Target,
EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet
)
{
UINT8 PacketCommand[12];
UINT64 TimeoutInMicroSeconds;
EFI_STATUS PacketCommandStatus;
//
// Fill ATAPI Command Packet according to CDB
//
ZeroMem (&PacketCommand, 12);
CopyMem (&PacketCommand, Packet->Cdb, Packet->CdbLength);
//
// Timeout is 100ns unit, convert it to 1000ns (1us) unit.
//
TimeoutInMicroSeconds = DivU64x32 (Packet->Timeout, (UINT32) 10);
//
// Submit ATAPI Command Packet
//
PacketCommandStatus = AtapiPacketCommand (
AtapiScsiPrivate,
Target,
PacketCommand,
Packet->DataBuffer,
&(Packet->TransferLength),
(DATA_DIRECTION) Packet->DataDirection,
TimeoutInMicroSeconds
);
if (!EFI_ERROR (PacketCommandStatus) || (Packet->SenseData == NULL)) {
Packet->SenseDataLength = 0;
return PacketCommandStatus;
}
//
// Return SenseData if PacketCommandStatus matches
// the following return codes.
//
if ((PacketCommandStatus == EFI_WARN_BUFFER_TOO_SMALL) ||
(PacketCommandStatus == EFI_DEVICE_ERROR) ||
(PacketCommandStatus == EFI_TIMEOUT)) {
//
// avoid submit request sense command continuously.
//
if (PacketCommand[0] == OP_REQUEST_SENSE) {
Packet->SenseDataLength = 0;
return PacketCommandStatus;
}
RequestSenseCommand (
AtapiScsiPrivate,
Target,
Packet->Timeout,
Packet->SenseData,
&Packet->SenseDataLength
);
}
return PacketCommandStatus;
}
/**
RequestSenseCommand
@param AtapiScsiPrivate
@param Target
@param Timeout
@param SenseData
@param SenseDataLength
@todo Add function description
@todo AtapiScsiPrivate TODO: add argument description
@todo Target TODO: add argument description
@todo Timeout TODO: add argument description
@todo SenseData TODO: add argument description
@todo SenseDataLength TODO: add argument description
@todo add return values
**/
EFI_STATUS
RequestSenseCommand (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT32 Target,
UINT64 Timeout,
VOID *SenseData,
UINT8 *SenseDataLength
)
{
EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET Packet;
UINT8 Cdb[12];
EFI_STATUS Status;
ZeroMem (&Packet, sizeof (EFI_SCSI_PASS_THRU_SCSI_REQUEST_PACKET));
ZeroMem (Cdb, 12);
Cdb[0] = OP_REQUEST_SENSE;
Cdb[4] = (UINT8) (*SenseDataLength);
Packet.Timeout = Timeout;
Packet.DataBuffer = SenseData;
Packet.SenseData = NULL;
Packet.Cdb = Cdb;
Packet.TransferLength = *SenseDataLength;
Packet.CdbLength = 12;
Packet.DataDirection = DataIn;
Status = SubmitBlockingIoCommand (AtapiScsiPrivate, Target, &Packet);
*SenseDataLength = (UINT8) (Packet.TransferLength);
return Status;
}
/**
Submits ATAPI command packet to the specified ATAPI device.
@param AtapiScsiPrivate: Private data structure for the specified channel.
@param Target: The Target ID of the ATAPI device to send the SCSI
Request Packet. To ATAPI devices attached on an IDE
Channel, Target ID 0 indicates Master device;Target
ID 1 indicates Slave device.
@param PacketCommand: Points to the ATAPI command packet.
@param Buffer: Points to the transferred data.
@param ByteCount: When input,indicates the buffer size; when output,
indicates the actually transferred data size.
@param Direction: Indicates the data transfer direction.
@param TimeoutInMicroSeconds: The timeout, in micro second units,
to use for the execution of this ATAPI command.
A TimeoutInMicroSeconds value of 0 means that
this function will wait indefinitely for the ATAPI
command to execute.
If TimeoutInMicroSeconds is greater than zero, then
this function will return EFI_TIMEOUT if the time
required to execute the ATAPI command is greater
than TimeoutInMicroSeconds.
@todo AtapiScsiPrivate - add argument and description to function comment
@todo PacketCommand - add argument and description to function comment
@todo Buffer - add argument and description to function comment
@todo ByteCount - add argument and description to function comment
@todo Direction - add argument and description to function comment
**/
EFI_STATUS
AtapiPacketCommand (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT32 Target,
UINT8 *PacketCommand,
VOID *Buffer,
UINT32 *ByteCount,
DATA_DIRECTION Direction,
UINT64 TimeoutInMicroSeconds
)
{
UINT16 *CommandIndex;
UINT8 Count;
EFI_STATUS Status;
//
// Set all the command parameters by fill related registers.
// Before write to all the following registers, BSY and DRQ must be 0.
//
Status = StatusDRQClear (AtapiScsiPrivate, TimeoutInMicroSeconds);
if (EFI_ERROR (Status)) {
if (Status == EFI_ABORTED) {
Status = EFI_DEVICE_ERROR;
}
*ByteCount = 0;
return Status;
}
//
// Select device via Device/Head Register.
// "Target = 0" indicates device 0; "Target = 1" indicates device 1
//
WritePortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Head,
(UINT8) ((Target << 4) | DEFAULT_CMD) // DEFAULT_CMD: 0xa0 (1010,0000)
);
//
// No OVL; No DMA (by setting feature register)
//
WritePortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg1.Feature,
0x00
);
//
// set the transfersize to MAX_ATAPI_BYTE_COUNT to let the device
// determine how much data should be transfered.
//
WritePortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->CylinderLsb,
(UINT8) (MAX_ATAPI_BYTE_COUNT & 0x00ff)
);
WritePortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->CylinderMsb,
(UINT8) (MAX_ATAPI_BYTE_COUNT >> 8)
);
//
// DEFAULT_CTL:0x0a (0000,1010)
// Disable interrupt
//
WritePortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Alt.DeviceControl,
DEFAULT_CTL
);
//
// Send Packet command to inform device
// that the following data bytes are command packet.
//
WritePortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg.Command,
PACKET_CMD
);
//
// Before data transfer, BSY should be 0 and DRQ should be 1.
// if they are not in specified time frame,
// retrieve Sense Key from Error Register before return.
//
Status = StatusDRQReady (AtapiScsiPrivate, TimeoutInMicroSeconds);
if (EFI_ERROR (Status)) {
if (Status == EFI_ABORTED) {
Status = EFI_DEVICE_ERROR;
}
*ByteCount = 0;
return Status;
}
//
// Send out command packet
//
CommandIndex = (UINT16 *) PacketCommand;
for (Count = 0; Count < 6; Count++, CommandIndex++) {
WritePortW (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->Data, *CommandIndex);
}
//
// call AtapiPassThruPioReadWriteData() function to get
// requested transfer data form device.
//
return AtapiPassThruPioReadWriteData (
AtapiScsiPrivate,
Buffer,
ByteCount,
Direction,
TimeoutInMicroSeconds
);
}
/**
Performs data transfer between ATAPI device and host after the
ATAPI command packet is sent.
@param AtapiScsiPrivate: Private data structure for the specified channel.
@param Buffer: Points to the transferred data.
@param ByteCount: When input,indicates the buffer size; when output,
indicates the actually transferred data size.
@param Direction: Indicates the data transfer direction.
@param TimeoutInMicroSeconds: The timeout, in micro second units,
to use for the execution of this ATAPI command.
A TimeoutInMicroSeconds value of 0 means that
this function will wait indefinitely for the ATAPI
command to execute.
If TimeoutInMicroSeconds is greater than zero, then
this function will return EFI_TIMEOUT if the time
required to execute the ATAPI command is greater
than TimeoutInMicroSeconds.
@todo AtapiScsiPrivate - add argument and description to function comment
@todo Buffer - add argument and description to function comment
@todo ByteCount - add argument and description to function comment
@todo Direction - add argument and description to function comment
@todo EFI_DEVICE_ERROR - add return value to function comment
@todo EFI_DEVICE_ERROR - add return value to function comment
@todo EFI_WARN_BUFFER_TOO_SMALL - add return value to function comment
**/
EFI_STATUS
AtapiPassThruPioReadWriteData (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT16 *Buffer,
UINT32 *ByteCount,
DATA_DIRECTION Direction,
UINT64 TimeoutInMicroSeconds
)
{
UINT32 Index;
UINT32 RequiredWordCount;
UINT32 ActualWordCount;
UINT32 WordCount;
EFI_STATUS Status;
UINT16 *ptrBuffer;
Status = EFI_SUCCESS;
//
// Non Data transfer request is also supported.
//
if (*ByteCount == 0 || Buffer == NULL) {
*ByteCount = 0;
if (EFI_ERROR (StatusWaitForBSYClear (AtapiScsiPrivate, TimeoutInMicroSeconds))) {
return EFI_DEVICE_ERROR;
}
}
ptrBuffer = Buffer;
RequiredWordCount = *ByteCount / 2;
//
// ActuralWordCount means the word count of data really transfered.
//
ActualWordCount = 0;
while (ActualWordCount < RequiredWordCount) {
//
// before each data transfer stream, the host should poll DRQ bit ready,
// which indicates device's ready for data transfer .
//
Status = StatusDRQReady (AtapiScsiPrivate, TimeoutInMicroSeconds);
if (EFI_ERROR (Status)) {
*ByteCount = ActualWordCount * 2;
AtapiPassThruCheckErrorStatus (AtapiScsiPrivate);
if (ActualWordCount == 0) {
return EFI_DEVICE_ERROR;
}
//
// ActualWordCount > 0
//
if (ActualWordCount < RequiredWordCount) {
return EFI_WARN_BUFFER_TOO_SMALL;
}
}
//
// get current data transfer size from Cylinder Registers.
//
WordCount = ReadPortB (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->CylinderMsb) << 8;
WordCount = WordCount | ReadPortB (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->CylinderLsb);
WordCount = WordCount & 0xffff;
WordCount /= 2;
//
// perform a series data In/Out.
//
for (Index = 0; (Index < WordCount) && (ActualWordCount < RequiredWordCount); Index++, ActualWordCount++) {
if (Direction == DataIn) {
*ptrBuffer = ReadPortW (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->Data);
} else {
WritePortW (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->Data, *ptrBuffer);
}
ptrBuffer++;
}
}
//
// After data transfer is completed, normally, DRQ bit should clear.
//
StatusDRQClear (AtapiScsiPrivate, TimeoutInMicroSeconds);
//
// read status register to check whether error happens.
//
Status = AtapiPassThruCheckErrorStatus (AtapiScsiPrivate);
*ByteCount = ActualWordCount * 2;
return Status;
}
/**
Read one byte from a specified I/O port.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo PciIo - add argument and description to function comment
@todo Port - add argument and description to function comment
**/
UINT8
ReadPortB (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port
)
{
UINT8 Data;
Data = 0;
PciIo->Io.Read (
PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
return Data;
}
/**
Read one word from a specified I/O port.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo PciIo - add argument and description to function comment
@todo Port - add argument and description to function comment
**/
UINT16
ReadPortW (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port
)
{
UINT16 Data;
Data = 0;
PciIo->Io.Read (
PciIo,
EfiPciIoWidthUint16,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
return Data;
}
/**
Write one byte to a specified I/O port.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo PciIo - add argument and description to function comment
@todo Port - add argument and description to function comment
@todo Data - add argument and description to function comment
**/
VOID
WritePortB (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINT8 Data
)
{
PciIo->Io.Write (
PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
}
/**
Write one word to a specified I/O port.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo PciIo - add argument and description to function comment
@todo Port - add argument and description to function comment
@todo Data - add argument and description to function comment
**/
VOID
WritePortW (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINT16 Data
)
{
PciIo->Io.Write (
PciIo,
EfiPciIoWidthUint16,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
}
/**
Check whether DRQ is clear in the Status Register. (BSY must also be cleared)
If TimeoutInMicroSeconds is zero, this routine should wait infinitely for
DRQ clear. Otherwise, it will return EFI_TIMEOUT when specified time is
elapsed.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo TimeoutInMicroSeconds - add argument and description to function comment
@todo EFI_ABORTED - add return value to function comment
@todo EFI_TIMEOUT - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
StatusDRQClear (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT64 TimeoutInMicroSeconds
)
{
UINT64 Delay;
UINT8 StatusRegister;
UINT8 ErrRegister;
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
} else {
Delay = DivU64x32 (TimeoutInMicroSeconds, (UINT32) 30) + 1;
}
do {
StatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg.Status
);
//
// wait for BSY == 0 and DRQ == 0
//
if ((StatusRegister & (DRQ | BSY)) == 0) {
break;
}
//
// check whether the command is aborted by the device
//
if ((StatusRegister & (BSY | ERR)) == ERR) {
ErrRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg1.Error
);
if ((ErrRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
//
// Loop infinitely if not meeting expected condition
//
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
}
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Check whether DRQ is clear in the Alternate Status Register.
(BSY must also be cleared).
If TimeoutInMicroSeconds is zero, this routine should wait infinitely for
DRQ clear. Otherwise, it will return EFI_TIMEOUT when specified time is
elapsed.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo TimeoutInMicroSeconds - add argument and description to function comment
@todo EFI_ABORTED - add return value to function comment
@todo EFI_TIMEOUT - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
AltStatusDRQClear (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT64 TimeoutInMicroSeconds
)
{
UINT64 Delay;
UINT8 AltStatusRegister;
UINT8 ErrRegister;
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
} else {
Delay = DivU64x32 (TimeoutInMicroSeconds, (UINT32) 30) + 1;
}
do {
AltStatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Alt.AltStatus
);
//
// wait for BSY == 0 and DRQ == 0
//
if ((AltStatusRegister & (DRQ | BSY)) == 0) {
break;
}
if ((AltStatusRegister & (BSY | ERR)) == ERR) {
ErrRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg1.Error
);
if ((ErrRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
//
// Loop infinitely if not meeting expected condition
//
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
}
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Check whether DRQ is ready in the Status Register. (BSY must also be cleared)
If TimeoutInMicroSeconds is zero, this routine should wait infinitely for
DRQ ready. Otherwise, it will return EFI_TIMEOUT when specified time is
elapsed.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo TimeoutInMicroSeconds - add argument and description to function comment
@todo EFI_ABORTED - add return value to function comment
@todo EFI_TIMEOUT - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
StatusDRQReady (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT64 TimeoutInMicroSeconds
)
{
UINT64 Delay;
UINT8 StatusRegister;
UINT8 ErrRegister;
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
} else {
Delay = DivU64x32 (TimeoutInMicroSeconds, (UINT32) 30) + 1;
}
do {
//
// read Status Register will clear interrupt
//
StatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg.Status
);
//
// BSY==0,DRQ==1
//
if ((StatusRegister & (BSY | DRQ)) == DRQ) {
break;
}
if ((StatusRegister & (BSY | ERR)) == ERR) {
ErrRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg1.Error
);
if ((ErrRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
//
// Loop infinitely if not meeting expected condition
//
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
}
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Check whether DRQ is ready in the Alternate Status Register.
(BSY must also be cleared)
If TimeoutInMicroSeconds is zero, this routine should wait infinitely for
DRQ ready. Otherwise, it will return EFI_TIMEOUT when specified time is
elapsed.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo TimeoutInMicroSeconds - add argument and description to function comment
@todo EFI_ABORTED - add return value to function comment
@todo EFI_TIMEOUT - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
AltStatusDRQReady (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT64 TimeoutInMicroSeconds
)
{
UINT64 Delay;
UINT8 AltStatusRegister;
UINT8 ErrRegister;
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
} else {
Delay = DivU64x32 (TimeoutInMicroSeconds, (UINT32) 30) + 1;
}
do {
//
// read Status Register will clear interrupt
//
AltStatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Alt.AltStatus
);
//
// BSY==0,DRQ==1
//
if ((AltStatusRegister & (BSY | DRQ)) == DRQ) {
break;
}
if ((AltStatusRegister & (BSY | ERR)) == ERR) {
ErrRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg1.Error
);
if ((ErrRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
//
// Loop infinitely if not meeting expected condition
//
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
}
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Check whether BSY is clear in the Status Register.
If TimeoutInMicroSeconds is zero, this routine should wait infinitely for
BSY clear. Otherwise, it will return EFI_TIMEOUT when specified time is
elapsed.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo TimeoutInMicroSeconds - add argument and description to function comment
@todo EFI_TIMEOUT - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
StatusWaitForBSYClear (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT64 TimeoutInMicroSeconds
)
{
UINT64 Delay;
UINT8 StatusRegister;
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
} else {
Delay = DivU64x32 (TimeoutInMicroSeconds, (UINT32) 30) + 1;
}
do {
StatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg.Status
);
if ((StatusRegister & BSY) == 0x00) {
break;
}
//
// Stall for 30 us
//
gBS->Stall (30);
//
// Loop infinitely if not meeting expected condition
//
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
}
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Check whether BSY is clear in the Alternate Status Register.
If TimeoutInMicroSeconds is zero, this routine should wait infinitely for
BSY clear. Otherwise, it will return EFI_TIMEOUT when specified time is
elapsed.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo TimeoutInMicroSeconds - add argument and description to function comment
@todo EFI_TIMEOUT - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
AltStatusWaitForBSYClear (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT64 TimeoutInMicroSeconds
)
{
UINT64 Delay;
UINT8 AltStatusRegister;
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
} else {
Delay = DivU64x32 (TimeoutInMicroSeconds, (UINT32) 30) + 1;
}
do {
AltStatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Alt.AltStatus
);
if ((AltStatusRegister & BSY) == 0x00) {
break;
}
//
// Stall for 30 us
//
gBS->Stall (30);
//
// Loop infinitely if not meeting expected condition
//
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
}
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Check whether DRDY is ready in the Status Register.
(BSY must also be cleared)
If TimeoutInMicroSeconds is zero, this routine should wait infinitely for
DRDY ready. Otherwise, it will return EFI_TIMEOUT when specified time is
elapsed.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo TimeoutInMicroSeconds - add argument and description to function comment
@todo EFI_ABORTED - add return value to function comment
@todo EFI_TIMEOUT - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
StatusDRDYReady (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT64 TimeoutInMicroSeconds
)
{
UINT64 Delay;
UINT8 StatusRegister;
UINT8 ErrRegister;
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
} else {
Delay = DivU64x32 (TimeoutInMicroSeconds, (UINT32) 30) + 1;
}
do {
StatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg.Status
);
//
// BSY == 0 , DRDY == 1
//
if ((StatusRegister & (DRDY | BSY)) == DRDY) {
break;
}
if ((StatusRegister & (BSY | ERR)) == ERR) {
ErrRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg1.Error
);
if ((ErrRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
//
// Loop infinitely if not meeting expected condition
//
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
}
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Check whether DRDY is ready in the Alternate Status Register.
(BSY must also be cleared)
If TimeoutInMicroSeconds is zero, this routine should wait infinitely for
DRDY ready. Otherwise, it will return EFI_TIMEOUT when specified time is
elapsed.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo TimeoutInMicroSeconds - add argument and description to function comment
@todo EFI_ABORTED - add return value to function comment
@todo EFI_TIMEOUT - add return value to function comment
@todo EFI_SUCCESS - add return value to function comment
**/
EFI_STATUS
AltStatusDRDYReady (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate,
UINT64 TimeoutInMicroSeconds
)
{
UINT64 Delay;
UINT8 AltStatusRegister;
UINT8 ErrRegister;
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
} else {
Delay = DivU64x32 (TimeoutInMicroSeconds, (UINT32) 30) + 1;
}
do {
AltStatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Alt.AltStatus
);
//
// BSY == 0 , DRDY == 1
//
if ((AltStatusRegister & (DRDY | BSY)) == DRDY) {
break;
}
if ((AltStatusRegister & (BSY | ERR)) == ERR) {
ErrRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg1.Error
);
if ((ErrRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
//
// Loop infinitely if not meeting expected condition
//
if (TimeoutInMicroSeconds == 0) {
Delay = 2;
}
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
Check Error Register for Error Information.
@todo function comment is missing 'Routine Description:'
@todo function comment is missing 'Arguments:'
@todo function comment is missing 'Returns:'
@todo AtapiScsiPrivate - add argument and description to function comment
@todo EFI_SUCCESS - add return value to function comment
@todo EFI_DEVICE_ERROR - add return value to function comment
**/
EFI_STATUS
AtapiPassThruCheckErrorStatus (
ATAPI_SCSI_PASS_THRU_DEV *AtapiScsiPrivate
)
{
UINT8 StatusRegister;
UINT8 ErrorRegister;
StatusRegister = ReadPortB (
AtapiScsiPrivate->PciIo,
AtapiScsiPrivate->IoPort->Reg.Status
);
DEBUG_CODE_BEGIN ();
if (StatusRegister & DWF) {
DEBUG (
(EFI_D_BLKIO,
"AtapiPassThruCheckErrorStatus()-- %02x : Error : Write Fault\n",
StatusRegister)
);
}
if (StatusRegister & CORR) {
DEBUG (
(EFI_D_BLKIO,
"AtapiPassThruCheckErrorStatus()-- %02x : Error : Corrected Data\n",
StatusRegister)
);
}
if (StatusRegister & ERR) {
ErrorRegister = ReadPortB (AtapiScsiPrivate->PciIo, AtapiScsiPrivate->IoPort->Reg1.Error);
if (ErrorRegister & BBK_ERR) {
DEBUG (
(EFI_D_BLKIO,
"AtapiPassThruCheckErrorStatus()-- %02x : Error : Bad Block Detected\n",
ErrorRegister)
);
}
if (ErrorRegister & UNC_ERR) {
DEBUG (
(EFI_D_BLKIO,
"AtapiPassThruCheckErrorStatus()-- %02x : Error : Uncorrectable Data\n",
ErrorRegister)
);
}
if (ErrorRegister & MC_ERR) {
DEBUG (
(EFI_D_BLKIO,
"AtapiPassThruCheckErrorStatus()-- %02x : Error : Media Change\n",
ErrorRegister)
);
}
if (ErrorRegister & ABRT_ERR) {
DEBUG (
(EFI_D_BLKIO,
"AtapiPassThruCheckErrorStatus()-- %02x : Error : Abort\n",
ErrorRegister)
);
}
if (ErrorRegister & TK0NF_ERR) {
DEBUG (
(EFI_D_BLKIO,
"AtapiPassThruCheckErrorStatus()-- %02x : Error : Track 0 Not Found\n",
ErrorRegister)
);
}
if (ErrorRegister & AMNF_ERR) {
DEBUG (
(EFI_D_BLKIO,
"AtapiPassThruCheckErrorStatus()-- %02x : Error : Address Mark Not Found\n",
ErrorRegister)
);
}
}
DEBUG_CODE_END ();
if ((StatusRegister & (ERR | DWF | CORR)) == 0) {
return EFI_SUCCESS;
}
return EFI_DEVICE_ERROR;
}
/**
The user Entry Point for module AtapiPassThru. 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
InitializeAtapiPassThru(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
//
// Install driver model protocol(s).
//
Status = EfiLibInstallAllDriverProtocols (
ImageHandle,
SystemTable,
&gAtapiScsiPassThruDriverBinding,
ImageHandle,
&gAtapiScsiPassThruComponentName,
NULL,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}