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audk/IntelFrameworkModulePkg/Bus/Pci/IdeBusDxe/Ide.c

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/** @file
Copyright (c) 2006 - 2008, 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 "IdeBus.h"
BOOLEAN ChannelDeviceDetected = FALSE;
BOOLEAN SlaveDeviceExist = FALSE;
UINT8 SlaveDeviceType = INVALID_DEVICE_TYPE;
BOOLEAN MasterDeviceExist = FALSE;
UINT8 MasterDeviceType = INVALID_DEVICE_TYPE;
/**
TODO: Add function description
@param PciIo TODO: add argument description
@param Port TODO: add argument description
TODO: add return values
**/
UINT8
IDEReadPortB (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port
)
{
UINT8 Data;
Data = 0;
//
// perform 1-byte data read from register
//
PciIo->Io.Read (
PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
return Data;
}
/**
Reads multiple words of data from the IDE data port.
Call the IO abstraction once to do the complete read,
not one word at a time
@param PciIo Pointer to the EFI_PCI_IO instance
@param Port IO port to read
@param Count No. of UINT16's to read
@param Buffer Pointer to the data buffer for read
**/
VOID
IDEReadPortWMultiple (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINTN Count,
IN VOID *Buffer
)
{
UINT16 *AlignedBuffer;
UINT16 *WorkingBuffer;
UINTN Size;
//
// Prepare an 16-bit alligned working buffer. CpuIo will return failure and
// not perform actual I/O operations if buffer pointer passed in is not at
// natural boundary. The "Buffer" argument is passed in by user and may not
// at 16-bit natural boundary.
//
Size = sizeof (UINT16) * Count;
gBS->AllocatePool (
EfiBootServicesData,
Size + 1,
(VOID**)&WorkingBuffer
);
AlignedBuffer = (UINT16 *) ((UINTN)(((UINTN) WorkingBuffer + 0x1) & (~0x1)));
//
// Perform UINT16 data read from FIFO
//
PciIo->Io.Read (
PciIo,
EfiPciIoWidthFifoUint16,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
Count,
(UINT16*)AlignedBuffer
);
//
// Copy data to user buffer
//
CopyMem (Buffer, (UINT16*)AlignedBuffer, Size);
gBS->FreePool (WorkingBuffer);
}
/**
TODO: Add function description
@param PciIo TODO: add argument description
@param Port TODO: add argument description
@param Data TODO: add argument description
TODO: add return values
**/
VOID
IDEWritePortB (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINT8 Data
)
{
//
// perform 1-byte data write to register
//
PciIo->Io.Write (
PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
}
/**
TODO: Add function description
@param PciIo TODO: add argument description
@param Port TODO: add argument description
@param Data TODO: add argument description
TODO: add return values
**/
VOID
IDEWritePortW (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINT16 Data
)
{
//
// perform 1-word data write to register
//
PciIo->Io.Write (
PciIo,
EfiPciIoWidthUint16,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
}
/**
Write multiple words of data to the IDE data port.
Call the IO abstraction once to do the complete read,
not one word at a time
@param PciIo Pointer to the EFI_PCI_IO instance
@param Port IO port to read
@param Count No. of UINT16's to read
@param Buffer Pointer to the data buffer for read
**/
VOID
IDEWritePortWMultiple (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINTN Count,
IN VOID *Buffer
)
{
UINT16 *AlignedBuffer;
UINT32 *WorkingBuffer;
UINTN Size;
//
// Prepare an 16-bit alligned working buffer. CpuIo will return failure and
// not perform actual I/O operations if buffer pointer passed in is not at
// natural boundary. The "Buffer" argument is passed in by user and may not
// at 16-bit natural boundary.
//
Size = sizeof (UINT16) * Count;
gBS->AllocatePool (
EfiBootServicesData,
Size + 1,
(VOID **) &WorkingBuffer
);
AlignedBuffer = (UINT16 *) ((UINTN)(((UINTN) WorkingBuffer + 0x1) & (~0x1)));
//
// Copy data from user buffer to working buffer
//
CopyMem ((UINT16 *) AlignedBuffer, Buffer, Size);
//
// perform UINT16 data write to the FIFO
//
PciIo->Io.Write (
PciIo,
EfiPciIoWidthFifoUint16,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
Count,
(UINT16 *) AlignedBuffer
);
gBS->FreePool (WorkingBuffer);
}
//
// GetIdeRegistersBaseAddr
//
/**
Get IDE IO port registers' base addresses by mode. In 'Compatibility' mode,
use fixed addresses. In Native-PCI mode, get base addresses from BARs in
the PCI IDE controller's Configuration Space.
The steps to get IDE IO port registers' base addresses for each channel
as follows:
1. Examine the Programming Interface byte of the Class Code fields in PCI IDE
controller's Configuration Space to determine the operating mode.
2. a) In 'Compatibility' mode, use fixed addresses shown in the Table 1 below.
<pre>
___________________________________________
| | Command Block | Control Block |
| Channel | Registers | Registers |
|___________|_______________|_______________|
| Primary | 1F0h - 1F7h | 3F6h - 3F7h |
|___________|_______________|_______________|
| Secondary | 170h - 177h | 376h - 377h |
|___________|_______________|_______________|
Table 1. Compatibility resource mappings
</pre>
b) In Native-PCI mode, IDE registers are mapped into IO space using the BARs
in IDE controller's PCI Configuration Space, shown in the Table 2 below.
<pre>
___________________________________________________
| | Command Block | Control Block |
| Channel | Registers | Registers |
|___________|___________________|___________________|
| Primary | BAR at offset 0x10| BAR at offset 0x14|
|___________|___________________|___________________|
| Secondary | BAR at offset 0x18| BAR at offset 0x1C|
|___________|___________________|___________________|
Table 2. BARs for Register Mapping
</pre>
@note Refer to Intel ICH4 datasheet, Control Block Offset: 03F4h for
primary, 0374h for secondary. So 2 bytes extra offset should be
added to the base addresses read from BARs.
For more details, please refer to PCI IDE Controller Specification and Intel
ICH4 Datasheet.
@param PciIo Pointer to the EFI_PCI_IO_PROTOCOL instance
@param IdeRegsBaseAddr Pointer to IDE_REGISTERS_BASE_ADDR to
receive IDE IO port registers' base addresses
**/
EFI_STATUS
GetIdeRegistersBaseAddr (
IN EFI_PCI_IO_PROTOCOL *PciIo,
OUT IDE_REGISTERS_BASE_ADDR *IdeRegsBaseAddr
)
// TODO: EFI_UNSUPPORTED - 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 Status;
PCI_TYPE00 PciData;
Status = PciIo->Pci.Read (
PciIo,
EfiPciIoWidthUint8,
0,
sizeof (PciData),
&PciData
);
if (EFI_ERROR (Status)) {
return Status;
}
if ((PciData.Hdr.ClassCode[0] & IDE_PRIMARY_OPERATING_MODE) == 0) {
IdeRegsBaseAddr[IdePrimary].CommandBlockBaseAddr = 0x1f0;
IdeRegsBaseAddr[IdePrimary].ControlBlockBaseAddr = 0x3f6;
IdeRegsBaseAddr[IdePrimary].BusMasterBaseAddr =
(UINT16)((PciData.Device.Bar[4] & 0x0000fff0));
} else {
//
// The BARs should be of IO type
//
if ((PciData.Device.Bar[0] & BIT0) == 0 ||
(PciData.Device.Bar[1] & BIT0) == 0) {
return EFI_UNSUPPORTED;
}
IdeRegsBaseAddr[IdePrimary].CommandBlockBaseAddr =
(UINT16) (PciData.Device.Bar[0] & 0x0000fff8);
IdeRegsBaseAddr[IdePrimary].ControlBlockBaseAddr =
(UINT16) ((PciData.Device.Bar[1] & 0x0000fffc) + 2);
IdeRegsBaseAddr[IdePrimary].BusMasterBaseAddr =
(UINT16) ((PciData.Device.Bar[4] & 0x0000fff0));
}
if ((PciData.Hdr.ClassCode[0] & IDE_SECONDARY_OPERATING_MODE) == 0) {
IdeRegsBaseAddr[IdeSecondary].CommandBlockBaseAddr = 0x170;
IdeRegsBaseAddr[IdeSecondary].ControlBlockBaseAddr = 0x376;
IdeRegsBaseAddr[IdeSecondary].BusMasterBaseAddr =
(UINT16) ((PciData.Device.Bar[4] & 0x0000fff0));
} else {
//
// The BARs should be of IO type
//
if ((PciData.Device.Bar[2] & BIT0) == 0 ||
(PciData.Device.Bar[3] & BIT0) == 0) {
return EFI_UNSUPPORTED;
}
IdeRegsBaseAddr[IdeSecondary].CommandBlockBaseAddr =
(UINT16) (PciData.Device.Bar[2] & 0x0000fff8);
IdeRegsBaseAddr[IdeSecondary].ControlBlockBaseAddr =
(UINT16) ((PciData.Device.Bar[3] & 0x0000fffc) + 2);
IdeRegsBaseAddr[IdeSecondary].BusMasterBaseAddr =
(UINT16) ((PciData.Device.Bar[4] & 0x0000fff0));
}
return EFI_SUCCESS;
}
/**
This function is used to requery IDE resources. The IDE controller will
probably switch between native and legacy modes during the EFI->CSM->OS
transfer. We do this everytime before an BlkIo operation to ensure its
succeess.
@param IdeDev The BLK_IO private data which specifies the IDE device
**/
EFI_STATUS
ReassignIdeResources (
IN IDE_BLK_IO_DEV *IdeDev
)
// TODO: EFI_SUCCESS - add return value to function comment
{
EFI_STATUS Status;
IDE_REGISTERS_BASE_ADDR IdeRegsBaseAddr[IdeMaxChannel];
UINT16 CommandBlockBaseAddr;
UINT16 ControlBlockBaseAddr;
//
// Requery IDE IO port registers' base addresses in case of the switch of
// native and legacy modes
//
Status = GetIdeRegistersBaseAddr (IdeDev->PciIo, IdeRegsBaseAddr);
if (EFI_ERROR (Status)) {
return Status;
}
ZeroMem (IdeDev->IoPort, sizeof (IDE_BASE_REGISTERS));
CommandBlockBaseAddr = IdeRegsBaseAddr[IdeDev->Channel].CommandBlockBaseAddr;
ControlBlockBaseAddr = IdeRegsBaseAddr[IdeDev->Channel].ControlBlockBaseAddr;
IdeDev->IoPort->Data = CommandBlockBaseAddr;
(*(UINT16 *) &IdeDev->IoPort->Reg1) = (UINT16) (CommandBlockBaseAddr + 0x01);
IdeDev->IoPort->SectorCount = (UINT16) (CommandBlockBaseAddr + 0x02);
IdeDev->IoPort->SectorNumber = (UINT16) (CommandBlockBaseAddr + 0x03);
IdeDev->IoPort->CylinderLsb = (UINT16) (CommandBlockBaseAddr + 0x04);
IdeDev->IoPort->CylinderMsb = (UINT16) (CommandBlockBaseAddr + 0x05);
IdeDev->IoPort->Head = (UINT16) (CommandBlockBaseAddr + 0x06);
(*(UINT16 *) &IdeDev->IoPort->Reg) = (UINT16) (CommandBlockBaseAddr + 0x07);
(*(UINT16 *) &IdeDev->IoPort->Alt) = ControlBlockBaseAddr;
IdeDev->IoPort->DriveAddress = (UINT16) (ControlBlockBaseAddr + 0x01);
IdeDev->IoPort->MasterSlave = (UINT16) ((IdeDev->Device == IdeMaster) ? 1 : 0);
IdeDev->IoPort->BusMasterBaseAddr = IdeRegsBaseAddr[IdeDev->Channel].BusMasterBaseAddr;
return EFI_SUCCESS;
}
//
// DiscoverIdeDevice
//
/**
Detect if there is disk connected to this port
@param IdeDev The BLK_IO private data which specifies the IDE device
**/
EFI_STATUS
DiscoverIdeDevice (
IN IDE_BLK_IO_DEV *IdeDev
)
// TODO: EFI_NOT_FOUND - add return value to function comment
// TODO: EFI_NOT_FOUND - add return value to function comment
// TODO: EFI_SUCCESS - add return value to function comment
{
EFI_STATUS Status;
//
// If a channel has not been checked, check it now. Then set it to "checked" state
// After this step, all devices in this channel have been checked.
//
if (ChannelDeviceDetected == FALSE) {
Status = DetectIDEController (IdeDev);
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
}
Status = EFI_NOT_FOUND;
//
// Device exists. test if it is an ATA device.
// Prefer the result from DetectIDEController,
// if failed, try another device type to handle
// devices that not follow the spec.
//
if ((IdeDev->Device == IdeMaster) && (MasterDeviceExist)) {
if (MasterDeviceType == ATA_DEVICE_TYPE) {
Status = ATAIdentify (IdeDev);
if (EFI_ERROR (Status)) {
Status = ATAPIIdentify (IdeDev);
if (!EFI_ERROR (Status)) {
MasterDeviceType = ATAPI_DEVICE_TYPE;
}
}
} else {
Status = ATAPIIdentify (IdeDev);
if (EFI_ERROR (Status)) {
Status = ATAIdentify (IdeDev);
if (!EFI_ERROR (Status)) {
MasterDeviceType = ATA_DEVICE_TYPE;
}
}
}
}
if ((IdeDev->Device == IdeSlave) && (SlaveDeviceExist)) {
if (SlaveDeviceType == ATA_DEVICE_TYPE) {
Status = ATAIdentify (IdeDev);
if (EFI_ERROR (Status)) {
Status = ATAPIIdentify (IdeDev);
if (!EFI_ERROR (Status)) {
SlaveDeviceType = ATAPI_DEVICE_TYPE;
}
}
} else {
Status = ATAPIIdentify (IdeDev);
if (EFI_ERROR (Status)) {
Status = ATAIdentify (IdeDev);
if (!EFI_ERROR (Status)) {
SlaveDeviceType = ATA_DEVICE_TYPE;
}
}
}
}
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
//
// Init Block I/O interface
//
IdeDev->BlkIo.Revision = EFI_BLOCK_IO_PROTOCOL_REVISION;
IdeDev->BlkIo.Reset = IDEBlkIoReset;
IdeDev->BlkIo.ReadBlocks = IDEBlkIoReadBlocks;
IdeDev->BlkIo.WriteBlocks = IDEBlkIoWriteBlocks;
IdeDev->BlkIo.FlushBlocks = IDEBlkIoFlushBlocks;
IdeDev->BlkMedia.LogicalPartition = FALSE;
IdeDev->BlkMedia.WriteCaching = FALSE;
//
// Init Disk Info interface
//
gBS->CopyMem (&IdeDev->DiskInfo.Interface, &gEfiDiskInfoIdeInterfaceGuid, sizeof (EFI_GUID));
IdeDev->DiskInfo.Inquiry = IDEDiskInfoInquiry;
IdeDev->DiskInfo.Identify = IDEDiskInfoIdentify;
IdeDev->DiskInfo.SenseData = IDEDiskInfoSenseData;
IdeDev->DiskInfo.WhichIde = IDEDiskInfoWhichIde;
return EFI_SUCCESS;
}
/**
This interface is used to initialize all state data related to the detection of one
channel.
@retval EFI_SUCCESS Completed Successfully.
**/
EFI_STATUS
InitializeIDEChannelData (
VOID
)
{
ChannelDeviceDetected = FALSE;
MasterDeviceExist = FALSE;
MasterDeviceType = 0xff;
SlaveDeviceExist = FALSE;
SlaveDeviceType = 0xff;
return EFI_SUCCESS;
}
/**
This function is called by DiscoverIdeDevice(). It is used for detect
whether the IDE device exists in the specified Channel as the specified
Device Number.
There is two IDE channels: one is Primary Channel, the other is
Secondary Channel.(Channel is the logical name for the physical "Cable".)
Different channel has different register group.
On each IDE channel, at most two IDE devices attach,
one is called Device 0 (Master device), the other is called Device 1
(Slave device). The devices on the same channel co-use the same register
group, so before sending out a command for a specified device via command
register, it is a must to select the current device to accept the command
by set the device number in the Head/Device Register.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@retval TRUE
successfully detects device.
@retval FALSE
any failure during detection process will return this
value.
@note
TODO: EFI_SUCCESS - add return value to function comment
TODO: EFI_NOT_FOUND - add return value to function comment
**/
EFI_STATUS
DetectIDEController (
IN IDE_BLK_IO_DEV *IdeDev
)
{
EFI_STATUS Status;
UINT8 SectorCountReg;
UINT8 LBALowReg;
UINT8 LBAMidReg;
UINT8 LBAHighReg;
UINT8 InitStatusReg;
UINT8 StatusReg;
//
// Select slave device
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((1 << 4) | 0xe0)
);
gBS->Stall (100);
//
// Save the init slave status register
//
InitStatusReg = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
//
// Select Master back
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((0 << 4) | 0xe0)
);
gBS->Stall (100);
//
// Send ATA Device Execut Diagnostic command.
// This command should work no matter DRDY is ready or not
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, 0x90);
Status = WaitForBSYClear (IdeDev, 3500);
if (EFI_ERROR (Status)) {
DEBUG((EFI_D_ERROR, "New detecting method: Send Execute Diagnostic Command: WaitForBSYClear: Status: %d\n", Status));
return Status;
}
//
// Read device signature
//
//
// Select Master
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((0 << 4) | 0xe0)
);
gBS->Stall (100);
SectorCountReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->SectorCount
);
LBALowReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->SectorNumber
);
LBAMidReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->CylinderLsb
);
LBAHighReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->CylinderMsb
);
if ((SectorCountReg == 0x1) &&
(LBALowReg == 0x1) &&
(LBAMidReg == 0x0) &&
(LBAHighReg == 0x0)) {
MasterDeviceExist = TRUE;
MasterDeviceType = ATA_DEVICE_TYPE;
} else {
if ((LBAMidReg == 0x14) &&
(LBAHighReg == 0xeb)) {
MasterDeviceExist = TRUE;
MasterDeviceType = ATAPI_DEVICE_TYPE;
}
}
//
// For some Hard Drive, it takes some time to get
// the right signature when operating in single slave mode.
// We stall 20ms to work around this.
//
if (!MasterDeviceExist) {
gBS->Stall (20000);
}
//
// Select Slave
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((1 << 4) | 0xe0)
);
gBS->Stall (100);
SectorCountReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->SectorCount
);
LBALowReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->SectorNumber
);
LBAMidReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->CylinderLsb
);
LBAHighReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->CylinderMsb
);
StatusReg = IDEReadPortB (
IdeDev->PciIo,
IdeDev->IoPort->Reg.Status
);
if ((SectorCountReg == 0x1) &&
(LBALowReg == 0x1) &&
(LBAMidReg == 0x0) &&
(LBAHighReg == 0x0)) {
SlaveDeviceExist = TRUE;
SlaveDeviceType = ATA_DEVICE_TYPE;
} else {
if ((LBAMidReg == 0x14) &&
(LBAHighReg == 0xeb)) {
SlaveDeviceExist = TRUE;
SlaveDeviceType = ATAPI_DEVICE_TYPE;
}
}
//
// When single master is plugged, slave device
// will be wrongly detected. Here's the workaround
// for ATA devices by detecting DRY bit in status
// register.
// NOTE: This workaround doesn't apply to ATAPI.
//
if (MasterDeviceExist && SlaveDeviceExist &&
(StatusReg & ATA_STSREG_DRDY) == 0 &&
(InitStatusReg & ATA_STSREG_DRDY) == 0 &&
MasterDeviceType == SlaveDeviceType &&
SlaveDeviceType != ATAPI_DEVICE_TYPE) {
SlaveDeviceExist = FALSE;
}
//
// Indicate this channel has been detected
//
ChannelDeviceDetected = TRUE;
return EFI_SUCCESS;
}
/**
This function is used to poll for the DRQ bit clear in the Status
Register. DRQ is cleared when the device is finished transferring data.
So this function is called after data transfer is finished.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] TimeoutInMilliSeconds
used to designate the timeout for the DRQ clear.
@retval EFI_SUCCESS
DRQ bit clear within the time out.
@retval EFI_TIMEOUT
DRQ bit not clear within the time out.
@note
Read Status Register will clear interrupt status.
**/
EFI_STATUS
DRQClear (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: TimeoutInMilliSeconds - add argument and description to function comment
// TODO: EFI_ABORTED - add return value to function comment
{
UINT32 Delay;
UINT8 StatusRegister;
UINT8 ErrorRegister;
Delay = (UINT32) (((TimeoutInMilliSeconds * STALL_1_MILLI_SECOND) / 30) + 1);
do {
StatusRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
//
// wait for BSY == 0 and DRQ == 0
//
if ((StatusRegister & (ATA_STSREG_DRQ | ATA_STSREG_BSY)) == 0) {
break;
}
if ((StatusRegister & (ATA_STSREG_BSY | ATA_STSREG_ERR)) == ATA_STSREG_ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ATA_ERRREG_ABRT) == ATA_ERRREG_ABRT) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
This function is used to poll for the DRQ bit clear in the Alternate
Status Register. DRQ is cleared when the device is finished
transferring data. So this function is called after data transfer
is finished.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] TimeoutInMilliSeconds
used to designate the timeout for the DRQ clear.
@retval EFI_SUCCESS
DRQ bit clear within the time out.
@retval EFI_TIMEOUT
DRQ bit not clear within the time out.
@note
Read Alternate Status Register will not clear interrupt status.
**/
EFI_STATUS
DRQClear2 (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: TimeoutInMilliSeconds - add argument and description to function comment
// TODO: EFI_ABORTED - add return value to function comment
{
UINT32 Delay;
UINT8 AltRegister;
UINT8 ErrorRegister;
Delay = (UINT32) (((TimeoutInMilliSeconds * STALL_1_MILLI_SECOND) / 30) + 1);
do {
AltRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Alt.AltStatus);
//
// wait for BSY == 0 and DRQ == 0
//
if ((AltRegister & (ATA_STSREG_DRQ | ATA_STSREG_BSY)) == 0) {
break;
}
if ((AltRegister & (ATA_STSREG_BSY | ATA_STSREG_ERR)) == ATA_STSREG_ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ATA_ERRREG_ABRT) == ATA_ERRREG_ABRT) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
This function is used to poll for the DRQ bit set in the
Status Register.
DRQ is set when the device is ready to transfer data. So this function
is called after the command is sent to the device and before required
data is transferred.
@param[in] IDE_BLK_IO_DEV IN *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure,used
to record all the information of the IDE device.
@param[in] UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
@retval EFI_SUCCESS
DRQ bit set within the time out.
@retval EFI_TIMEOUT
DRQ bit not set within the time out.
@retval EFI_ABORTED
DRQ bit not set caused by the command abort.
@note
Read Status Register will clear interrupt status.
**/
EFI_STATUS
DRQReady (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: TimeoutInMilliSeconds - add argument and description to function comment
{
UINT32 Delay;
UINT8 StatusRegister;
UINT8 ErrorRegister;
Delay = (UINT32) (((TimeoutInMilliSeconds * STALL_1_MILLI_SECOND) / 30) + 1);
do {
//
// read Status Register will clear interrupt
//
StatusRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
//
// BSY==0,DRQ==1
//
if ((StatusRegister & (ATA_STSREG_BSY | ATA_STSREG_DRQ)) == ATA_STSREG_DRQ) {
break;
}
if ((StatusRegister & (ATA_STSREG_BSY | ATA_STSREG_ERR)) == ATA_STSREG_ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ATA_ERRREG_ABRT) == ATA_ERRREG_ABRT) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
This function is used to poll for the DRQ bit set in the
Alternate Status Register. DRQ is set when the device is ready to
transfer data. So this function is called after the command
is sent to the device and before required data is transferred.
@param[in] IDE_BLK_IO_DEV IN *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
@retval EFI_SUCCESS
DRQ bit set within the time out.
@retval EFI_TIMEOUT
DRQ bit not set within the time out.
@retval EFI_ABORTED
DRQ bit not set caused by the command abort.
@note
Read Alternate Status Register will not clear interrupt status.
**/
EFI_STATUS
DRQReady2 (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: TimeoutInMilliSeconds - add argument and description to function comment
{
UINT32 Delay;
UINT8 AltRegister;
UINT8 ErrorRegister;
Delay = (UINT32) (((TimeoutInMilliSeconds * STALL_1_MILLI_SECOND) / 30) + 1);
do {
//
// Read Alternate Status Register will not clear interrupt status
//
AltRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Alt.AltStatus);
//
// BSY == 0 , DRQ == 1
//
if ((AltRegister & (ATA_STSREG_BSY | ATA_STSREG_DRQ)) == ATA_STSREG_DRQ) {
break;
}
if ((AltRegister & (ATA_STSREG_BSY | ATA_STSREG_ERR)) == ATA_STSREG_ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ATA_ERRREG_ABRT) == ATA_ERRREG_ABRT) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
/**
This function is used to poll for the BSY bit clear in the
Status Register. BSY is clear when the device is not busy.
Every command must be sent after device is not busy.
@param[in] IDE_BLK_IO_DEV IN *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
@retval EFI_SUCCESS
BSY bit clear within the time out.
@retval EFI_TIMEOUT
BSY bit not clear within the time out.
@note
Read Status Register will clear interrupt status.
**/
EFI_STATUS
WaitForBSYClear (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: TimeoutInMilliSeconds - add argument and description to function comment
{
UINT32 Delay;
UINT8 StatusRegister;
Delay = (UINT32) (((TimeoutInMilliSeconds * STALL_1_MILLI_SECOND) / 30) + 1);
do {
StatusRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
if ((StatusRegister & ATA_STSREG_BSY) == 0x00) {
break;
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// WaitForBSYClear2
//
/**
This function is used to poll for the BSY bit clear in the
Alternate Status Register. BSY is clear when the device is not busy.
Every command must be sent after device is not busy.
@param[in] IDE_BLK_IO_DEV IN *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
@retval EFI_SUCCESS
BSY bit clear within the time out.
@retval EFI_TIMEOUT
BSY bit not clear within the time out.
@note
Read Alternate Status Register will not clear interrupt status.
**/
EFI_STATUS
WaitForBSYClear2 (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: TimeoutInMilliSeconds - add argument and description to function comment
{
UINT32 Delay;
UINT8 AltRegister;
Delay = (UINT32) (((TimeoutInMilliSeconds * STALL_1_MILLI_SECOND) / 30) + 1);
do {
AltRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Alt.AltStatus);
if ((AltRegister & ATA_STSREG_BSY) == 0x00) {
break;
}
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// DRDYReady
//
/**
This function is used to poll for the DRDY bit set in the
Status Register. DRDY bit is set when the device is ready
to accept command. Most ATA commands must be sent after
DRDY set except the ATAPI Packet Command.
@param[in] IDE_BLK_IO_DEV IN *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
@retval EFI_SUCCESS
DRDY bit set within the time out.
@retval EFI_TIMEOUT
DRDY bit not set within the time out.
@note
Read Status Register will clear interrupt status.
**/
EFI_STATUS
DRDYReady (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN DelayInMilliSeconds
)
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: DelayInMilliSeconds - add argument and description to function comment
// TODO: EFI_ABORTED - add return value to function comment
{
UINT32 Delay;
UINT8 StatusRegister;
UINT8 ErrorRegister;
Delay = (UINT32) (((DelayInMilliSeconds * STALL_1_MILLI_SECOND) / 30) + 1);
do {
StatusRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
//
// BSY == 0 , DRDY == 1
//
if ((StatusRegister & (ATA_STSREG_DRDY | ATA_STSREG_BSY)) == ATA_STSREG_DRDY) {
break;
}
if ((StatusRegister & (ATA_STSREG_BSY | ATA_STSREG_ERR)) == ATA_STSREG_ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ATA_ERRREG_ABRT) == ATA_ERRREG_ABRT) {
return EFI_ABORTED;
}
}
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// DRDYReady2
//
/**
This function is used to poll for the DRDY bit set in the
Alternate Status Register. DRDY bit is set when the device is ready
to accept command. Most ATA commands must be sent after
DRDY set except the ATAPI Packet Command.
@param[in] IDE_BLK_IO_DEV IN *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
@retval EFI_SUCCESS
DRDY bit set within the time out.
@retval EFI_TIMEOUT
DRDY bit not set within the time out.
@note
Read Alternate Status Register will clear interrupt status.
**/
EFI_STATUS
DRDYReady2 (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN DelayInMilliSeconds
)
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: DelayInMilliSeconds - add argument and description to function comment
// TODO: EFI_ABORTED - add return value to function comment
{
UINT32 Delay;
UINT8 AltRegister;
UINT8 ErrorRegister;
Delay = (UINT32) (((DelayInMilliSeconds * STALL_1_MILLI_SECOND) / 30) + 1);
do {
AltRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Alt.AltStatus);
//
// BSY == 0 , DRDY == 1
//
if ((AltRegister & (ATA_STSREG_DRDY | ATA_STSREG_BSY)) == ATA_STSREG_DRDY) {
break;
}
if ((AltRegister & (ATA_STSREG_BSY | ATA_STSREG_ERR)) == ATA_STSREG_ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ATA_ERRREG_ABRT) == ATA_ERRREG_ABRT) {
return EFI_ABORTED;
}
}
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// SwapStringChars
//
/**
This function is a helper function used to change the char order in a
string. It is designed specially for the PrintAtaModuleName() function.
After the IDE device is detected, the IDE driver gets the device module
name by sending ATA command called ATA Identify Command or ATAPI
Identify Command to the specified IDE device. The module name returned
is a string of ASCII characters: the first character is bit8--bit15
of the first word, the second character is BIT0--bit7 of the first word
and so on. Thus the string can not be print directly before it is
preprocessed by this func to change the order of characters in
each word in the string.
@param[in] CHAR8 IN *Destination
Indicates the destination string.
@param[in] CHAR8 IN *Source
Indicates the source string.
@param[in] UINT8 IN Size
the length of the string
**/
VOID
SwapStringChars (
IN CHAR8 *Destination,
IN CHAR8 *Source,
IN UINT32 Size
)
{
UINT32 Index;
CHAR8 Temp;
for (Index = 0; Index < Size; Index += 2) {
Temp = Source[Index + 1];
Destination[Index + 1] = Source[Index];
Destination[Index] = Temp;
}
}
//
// ReleaseIdeResources
//
/**
Release resources of an IDE device before stopping it.
@param[in] *IdeBlkIoDevice Standard IDE device private data structure
**/
VOID
ReleaseIdeResources (
IN IDE_BLK_IO_DEV *IdeBlkIoDevice
)
{
if (IdeBlkIoDevice == NULL) {
return ;
}
//
// Release all the resourses occupied by the IDE_BLK_IO_DEV
//
if (IdeBlkIoDevice->SenseData != NULL) {
gBS->FreePool (IdeBlkIoDevice->SenseData);
IdeBlkIoDevice->SenseData = NULL;
}
if (IdeBlkIoDevice->Cache != NULL) {
gBS->FreePool (IdeBlkIoDevice->Cache);
IdeBlkIoDevice->Cache = NULL;
}
if (IdeBlkIoDevice->pIdData != NULL) {
gBS->FreePool (IdeBlkIoDevice->pIdData);
IdeBlkIoDevice->pIdData = NULL;
}
if (IdeBlkIoDevice->pInquiryData != NULL) {
gBS->FreePool (IdeBlkIoDevice->pInquiryData);
IdeBlkIoDevice->pInquiryData = NULL;
}
if (IdeBlkIoDevice->ControllerNameTable != NULL) {
FreeUnicodeStringTable (IdeBlkIoDevice->ControllerNameTable);
IdeBlkIoDevice->ControllerNameTable = NULL;
}
if (IdeBlkIoDevice->IoPort != NULL) {
gBS->FreePool (IdeBlkIoDevice->IoPort);
}
if (IdeBlkIoDevice->DevicePath != NULL) {
gBS->FreePool (IdeBlkIoDevice->DevicePath);
}
if (IdeBlkIoDevice->ExitBootServiceEvent != NULL) {
gBS->CloseEvent (IdeBlkIoDevice->ExitBootServiceEvent);
IdeBlkIoDevice->ExitBootServiceEvent = NULL;
}
gBS->FreePool (IdeBlkIoDevice);
IdeBlkIoDevice = NULL;
return ;
}
//
// SetDeviceTransferMode
//
/**
Set the calculated Best transfer mode to a detected device
@param[in] *IdeDev Standard IDE device private data structure
@param[in] *TransferMode The device transfer mode to be set
@return Set transfer mode Command execute status
**/
EFI_STATUS
SetDeviceTransferMode (
IN IDE_BLK_IO_DEV *IdeDev,
IN ATA_TRANSFER_MODE *TransferMode
)
// TODO: function comment is missing 'Routine Description:'
{
EFI_STATUS Status;
UINT8 DeviceSelect;
UINT8 SectorCount;
DeviceSelect = 0;
DeviceSelect = (UINT8) ((IdeDev->Device) << 4);
SectorCount = *((UINT8 *) TransferMode);
//
// Send SET FEATURE command (sub command 0x03) to set pio mode.
//
Status = AtaNonDataCommandIn (
IdeDev,
ATA_CMD_SET_FEATURES,
DeviceSelect,
0x03,
SectorCount,
0,
0,
0
);
return Status;
}
/**
Send ATA command into device with NON_DATA protocol
@param IdeDev Standard IDE device private data structure
@param AtaCommand The ATA command to be sent
@param Device The value in Device register
@param Feature The value in Feature register
@param SectorCount The value in SectorCount register
@param LbaLow The value in LBA_LOW register
@param LbaMiddle The value in LBA_MIDDLE register
@param LbaHigh The value in LBA_HIGH register
@retval EFI_SUCCESS Reading succeed
@retval EFI_ABORTED Command failed
@retval EFI_DEVICE_ERROR Device status error
**/
EFI_STATUS
AtaNonDataCommandIn (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINT8 AtaCommand,
IN UINT8 Device,
IN UINT8 Feature,
IN UINT8 SectorCount,
IN UINT8 LbaLow,
IN UINT8 LbaMiddle,
IN UINT8 LbaHigh
)
{
EFI_STATUS Status;
UINT8 StatusRegister;
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Select device (bit4), set LBA mode(bit6) (use 0xe0 for compatibility)
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((IdeDev->Device << 4) | 0xe0)
);
//
// ATA commands for ATA device must be issued when DRDY is set
//
Status = DRDYReady (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Pass parameter into device register block
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Head, Device);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Feature, Feature);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorCount, SectorCount);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, LbaLow);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, LbaMiddle);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, LbaHigh);
//
// Send command via Command Register
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, AtaCommand);
//
// Wait for command completion
// For ATAPI_SMART_CMD, we may need more timeout to let device
// adjust internal states.
//
if (AtaCommand == ATA_CMD_SMART) {
Status = WaitForBSYClear (IdeDev, ATASMARTTIMEOUT);
} else {
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
}
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
StatusRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
if ((StatusRegister & ATA_STSREG_ERR) == ATA_STSREG_ERR) {
//
// Failed to execute command, abort operation
//
return EFI_ABORTED;
}
return EFI_SUCCESS;
}
/**
Send ATA Ext command into device with NON_DATA protocol
@param IdeDev Standard IDE device private data structure
@param AtaCommand The ATA command to be sent
@param Device The value in Device register
@param Feature The value in Feature register
@param SectorCount The value in SectorCount register
@param LbaAddress The LBA address in 48-bit mode
@retval EFI_SUCCESS Reading succeed
@retval EFI_ABORTED Command failed
@retval EFI_DEVICE_ERROR Device status error
**/
EFI_STATUS
AtaNonDataCommandInExt (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINT8 AtaCommand,
IN UINT8 Device,
IN UINT16 Feature,
IN UINT16 SectorCount,
IN EFI_LBA LbaAddress
)
{
EFI_STATUS Status;
UINT8 StatusRegister;
UINT8 SectorCount8;
UINT8 Feature8;
UINT8 LbaLow;
UINT8 LbaMid;
UINT8 LbaHigh;
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Select device (bit4), set LBA mode(bit6) (use 0xe0 for compatibility)
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((IdeDev->Device << 4) | 0xe0)
);
//
// ATA commands for ATA device must be issued when DRDY is set
//
Status = DRDYReady (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Pass parameter into device register block
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Head, Device);
//
// Fill the feature register, which is a two-byte FIFO. Need write twice.
//
Feature8 = (UINT8) (Feature >> 8);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Feature, Feature8);
Feature8 = (UINT8) Feature;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Feature, Feature8);
//
// Fill the sector count register, which is a two-byte FIFO. Need write twice.
//
SectorCount8 = (UINT8) (SectorCount >> 8);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorCount, SectorCount8);
SectorCount8 = (UINT8) SectorCount;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorCount, SectorCount8);
//
// Fill the start LBA registers, which are also two-byte FIFO
//
LbaLow = (UINT8) RShiftU64 (LbaAddress, 24);
LbaMid = (UINT8) RShiftU64 (LbaAddress, 32);
LbaHigh = (UINT8) RShiftU64 (LbaAddress, 40);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, LbaLow);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, LbaMid);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, LbaHigh);
LbaLow = (UINT8) LbaAddress;
LbaMid = (UINT8) RShiftU64 (LbaAddress, 8);
LbaHigh = (UINT8) RShiftU64 (LbaAddress, 16);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, LbaLow);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, LbaMid);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, LbaHigh);
//
// Send command via Command Register
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, AtaCommand);
//
// Wait for command completion
//
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
StatusRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
if ((StatusRegister & ATA_STSREG_ERR) == ATA_STSREG_ERR) {
//
// Failed to execute command, abort operation
//
return EFI_ABORTED;
}
return EFI_SUCCESS;
}
//
// SetDriveParameters
//
/**
Set drive parameters for devices not support PACKETS command
@param[in] IdeDev Standard IDE device private data structure
@param[in] DriveParameters The device parameters to be set into the disk
@return SetParameters Command execute status
**/
EFI_STATUS
SetDriveParameters (
IN IDE_BLK_IO_DEV *IdeDev,
IN ATA_DRIVE_PARMS *DriveParameters
)
{
EFI_STATUS Status;
UINT8 DeviceSelect;
DeviceSelect = 0;
DeviceSelect = (UINT8) ((IdeDev->Device) << 4);
//
// Send Init drive parameters
//
Status = AtaNonDataCommandIn (
IdeDev,
ATA_CMD_INIT_DRIVE_PARAM,
(UINT8) (DeviceSelect + DriveParameters->Heads),
0,
DriveParameters->Sector,
0,
0,
0
);
//
// Send Set Multiple parameters
//
Status = AtaNonDataCommandIn (
IdeDev,
ATA_CMD_SET_MULTIPLE_MODE,
DeviceSelect,
0,
DriveParameters->MultipleSector,
0,
0,
0
);
return Status;
}
/**
TODO: Add function description
@param IdeDev TODO: add argument description
@retval EFI_SUCCESS TODO: Add description for return value
**/
EFI_STATUS
EnableInterrupt (
IN IDE_BLK_IO_DEV *IdeDev
)
{
UINT8 DeviceControl;
//
// Enable interrupt for DMA operation
//
DeviceControl = 0;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Alt.DeviceControl, DeviceControl);
return EFI_SUCCESS;
}
/**
Clear pending IDE interrupt before OS loader/kernel take control of the IDE device.
@param[in] Event Pointer to this event
@param[in] Context Event hanlder private data
**/
VOID
EFIAPI
ClearInterrupt (
IN EFI_EVENT Event,
IN VOID *Context
)
{
EFI_STATUS Status;
UINT64 IoPortForBmis;
UINT8 RegisterValue;
IDE_BLK_IO_DEV *IdeDev;
//
// Get our context
//
IdeDev = (IDE_BLK_IO_DEV *) Context;
//
// Obtain IDE IO port registers' base addresses
//
Status = ReassignIdeResources (IdeDev);
if (EFI_ERROR (Status)) {
return;
}
//
// Check whether interrupt is pending
//
//
// Reset IDE device to force it de-assert interrupt pin
// Note: this will reset all devices on this IDE channel
//
AtaSoftReset (IdeDev);
if (EFI_ERROR (Status)) {
return;
}
//
// Get base address of IDE Bus Master Status Regsiter
//
if (IdePrimary == IdeDev->Channel) {
IoPortForBmis = IdeDev->IoPort->BusMasterBaseAddr + BMISP_OFFSET;
} else {
if (IdeSecondary == IdeDev->Channel) {
IoPortForBmis = IdeDev->IoPort->BusMasterBaseAddr + BMISS_OFFSET;
} else {
return;
}
}
//
// Read BMIS register and clear ERROR and INTR bit
//
IdeDev->PciIo->Io.Read (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmis,
1,
&RegisterValue
);
RegisterValue |= (BMIS_INTERRUPT | BMIS_ERROR);
IdeDev->PciIo->Io.Write (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmis,
1,
&RegisterValue
);
//
// Select the other device on this channel to ensure this device to release the interrupt pin
//
if (IdeDev->Device == 0) {
RegisterValue = (1 << 4) | 0xe0;
} else {
RegisterValue = (0 << 4) | 0xe0;
}
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
RegisterValue
);
}
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