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audk/EdkModulePkg/Bus/Pci/IdeBus/Dxe/ide.c

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/*++
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.
Module Name:
ide.c
Abstract:
Revision History
--*/
#include "idebus.h"
BOOLEAN SlaveDeviceExist = FALSE;
BOOLEAN MasterDeviceExist = FALSE;
UINT8
IDEReadPortB (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port
)
/*++
Routine Description:
TODO: Add function description
Arguments:
PciIo - TODO: add argument description
Port - TODO: add argument description
Returns:
TODO: add return values
--*/
{
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;
}
VOID
IDEReadPortWMultiple (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINTN Count,
IN VOID *Buffer
)
/*++
Routine Description:
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
Arguments:
PciIo - Pointer to the EFI_PCI_IO instance
Port - IO port to read
Count - No. of UINT16's to read
Buffer - Pointer to the data buffer for read
++*/
// TODO: function comment should end with '--*/'
// TODO: function comment is missing 'Returns:'
{
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);
}
VOID
IDEWritePortB (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINT8 Data
)
/*++
Routine Description:
TODO: Add function description
Arguments:
PciIo - TODO: add argument description
Port - TODO: add argument description
Data - TODO: add argument description
Returns:
TODO: add return values
--*/
{
//
// perform 1-byte data write to register
//
PciIo->Io.Write (
PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
}
VOID
IDEWritePortW (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINT16 Data
)
/*++
Routine Description:
TODO: Add function description
Arguments:
PciIo - TODO: add argument description
Port - TODO: add argument description
Data - TODO: add argument description
Returns:
TODO: add return values
--*/
{
//
// perform 1-word data write to register
//
PciIo->Io.Write (
PciIo,
EfiPciIoWidthUint16,
EFI_PCI_IO_PASS_THROUGH_BAR,
(UINT64) Port,
1,
&Data
);
}
VOID
IDEWritePortWMultiple (
IN EFI_PCI_IO_PROTOCOL *PciIo,
IN UINT16 Port,
IN UINTN Count,
IN VOID *Buffer
)
/*++
Routine Description:
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
Arguments:
PciIo - Pointer to the EFI_PCI_IO instance
Port - IO port to read
Count - No. of UINT16's to read
Buffer - Pointer to the data buffer for read
++*/
// TODO: function comment should end with '--*/'
// TODO: function comment is missing 'Returns:'
{
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);
}
BOOLEAN
BadIdeDeviceCheck (
IN IDE_BLK_IO_DEV *IdeDev
)
/*++
Routine Description:
TODO: Add function description
Arguments:
IdeDev - TODO: add argument description
Returns:
TODO: add return values
--*/
{
//
// check whether all registers return 0xff,
// if so, deem the channel is disabled.
//
#ifdef EFI_DEBUG
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Data) != 0xff) {
return FALSE;
}
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Feature) != 0xff) {
return FALSE;
}
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->SectorCount) != 0xff) {
return FALSE;
}
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber) != 0xff) {
return FALSE;
}
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb) != 0xff) {
return FALSE;
}
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb) != 0xff) {
return FALSE;
}
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Head) != 0xff) {
return FALSE;
}
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command) != 0xff) {
return FALSE;
}
if (IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Alt.AltStatus) != 0xff) {
return FALSE;
}
return TRUE;
#else
return FALSE;
#endif
}
//
// GetIdeRegistersBaseAddr
//
EFI_STATUS
GetIdeRegistersBaseAddr (
IN EFI_PCI_IO_PROTOCOL *PciIo,
OUT IDE_REGISTERS_BASE_ADDR *IdeRegsBaseAddr
)
/*++
Routine Description:
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.
___________________________________________
| | Command Block | Control Block |
| Channel | Registers | Registers |
|___________|_______________|_______________|
| Primary | 1F0h - 1F7h | 3F6h - 3F7h |
|___________|_______________|_______________|
| Secondary | 170h - 177h | 376h - 377h |
|___________|_______________|_______________|
Table 1. Compatibility resource mappings
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.
___________________________________________________
| | 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
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.
Arguments:
PciIo - Pointer to the EFI_PCI_IO_PROTOCOL instance
IdeRegsBaseAddr - Pointer to IDE_REGISTERS_BASE_ADDR to
receive IDE IO port registers' base addresses
Returns:
--*/
// 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;
}
EFI_STATUS
ReassignIdeResources (
IN IDE_BLK_IO_DEV *IdeDev
)
/*++
Routine Description:
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.
Arguments:
IdeDev - The BLK_IO private data which specifies the IDE device
++*/
// TODO: function comment should end with '--*/'
// TODO: function comment is missing 'Returns:'
// 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;
}
EFI_STATUS
CheckPowerMode (
IDE_BLK_IO_DEV *IdeDev
)
/*++
Routine Description:
Read SATA registers to detect SATA disks
Arguments:
IdeDev - The BLK_IO private data which specifies the IDE device
++*/
// TODO: function comment should end with '--*/'
// TODO: function comment is missing 'Returns:'
// TODO: EFI_NOT_FOUND - add return value to function comment
// TODO: EFI_SUCCESS - add return value to function comment
// TODO: EFI_NOT_FOUND - add return value to function comment
{
UINT8 ErrorRegister;
EFI_STATUS Status;
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((IdeDev->Device << 4) | 0xe0)
);
//
// Wait 31 seconds for BSY clear. BSY should be in clear state if there exists
// a device (initial state). Normally, BSY is also in clear state if there is
// no device
//
Status = WaitForBSYClear (IdeDev, 31000);
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
//
// select device, read error register
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((IdeDev->Device << 4) | 0xe0)
);
Status = DRDYReady (IdeDev, 200);
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister == 0x01) || (ErrorRegister == 0x81)) {
return EFI_SUCCESS;
} else {
return EFI_NOT_FOUND;
}
}
//
// DiscoverIdeDevice
//
EFI_STATUS
DiscoverIdeDevice (
IN IDE_BLK_IO_DEV *IdeDev
)
/*++
Routine Description:
Detect if there is disk connected to this port
Arguments:
IdeDev - The BLK_IO private data which specifies the IDE device
++*/
// TODO: function comment should end with '--*/'
// TODO: function comment is missing 'Returns:'
// 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;
BOOLEAN SataFlag;
SataFlag = FALSE;
//
// This extra detection is for SATA disks
//
Status = CheckPowerMode (IdeDev);
if (Status == EFI_SUCCESS) {
SataFlag = TRUE;
}
//
// 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.
//
Status = DetectIDEController (IdeDev);
if ((EFI_ERROR (Status)) && !SataFlag) {
return EFI_NOT_FOUND;
}
//
// Device exists. test if it is an ATA device
//
Status = ATAIdentify (IdeDev);
if (EFI_ERROR (Status)) {
//
// if not ATA device, test if it is an ATAPI device
//
Status = ATAPIIdentify (IdeDev);
if (EFI_ERROR (Status)) {
//
// if not ATAPI device either, return error.
//
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;
}
EFI_STATUS
DetectIDEController (
IN IDE_BLK_IO_DEV *IdeDev
)
/*++
Name: DetectIDEController
Purpose:
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.
Parameters:
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.
Returns:
TRUE
successfully detects device.
FALSE
any failure during detection process will return this
value.
Notes:
--*/
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: IdeDev - add argument and description to function comment
// TODO: EFI_SUCCESS - add return value to function comment
// TODO: EFI_NOT_FOUND - add return value to function comment
{
EFI_STATUS Status;
UINT8 ErrorReg;
UINT8 StatusReg;
UINT8 InitStatusReg;
EFI_STATUS DeviceStatus;
//
// Slave device has been detected with master device.
//
if ((IdeDev->Device) == 1) {
if (SlaveDeviceExist) {
//
// If master not exists but slave exists, slave have to wait a while
//
if (!MasterDeviceExist) {
//
// if single slave can't be detected, add delay 4s here.
//
gBS->Stall (4000000);
}
return EFI_SUCCESS;
} else {
return EFI_NOT_FOUND;
}
}
//
// 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);
ErrorReg = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
//
// Master Error register is 0x01. D0 passed, D1 passed or not present.
// Master Error register is 0x81. D0 passed, D1 failed. Return.
// Master Error register is other value. D0 failed, D1 passed or not present..
//
if (ErrorReg == 0x01) {
MasterDeviceExist = TRUE;
DeviceStatus = EFI_SUCCESS;
} else if (ErrorReg == 0x81) {
MasterDeviceExist = TRUE;
DeviceStatus = EFI_SUCCESS;
SlaveDeviceExist = FALSE;
return DeviceStatus;
} else {
MasterDeviceExist = FALSE;
DeviceStatus = EFI_NOT_FOUND;
}
//
// Master Error register is not 0x81, Go on check Slave
//
//
// select slave
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((1 << 4) | 0xe0)
);
gBS->Stall (300);
ErrorReg = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
//
// Slave Error register is not 0x01, D1 failed. Return.
//
if (ErrorReg != 0x01) {
SlaveDeviceExist = FALSE;
return DeviceStatus;
}
StatusReg = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
//
// Most ATAPI devices don't set DRDY bit, so test with a slow but accurate
// "ATAPI TEST UNIT READY" command
//
if (((StatusReg & DRDY) == 0) && ((InitStatusReg & DRDY) == 0)) {
Status = AtapiTestUnitReady (IdeDev);
//
// Still fail, Slave doesn't exist.
//
if (EFI_ERROR (Status)) {
SlaveDeviceExist = FALSE;
return DeviceStatus;
}
}
//
// Error reg is 0x01 and DRDY is ready,
// or ATAPI test unit ready success,
// or init Slave status DRDY is ready
// Slave exists.
//
SlaveDeviceExist = TRUE;
return DeviceStatus;
}
EFI_STATUS
DRQClear (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
/*++
Name: DRQClear
Purpose:
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.
Parameters:
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.
UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ clear.
Returns:
EFI_SUCCESS
DRQ bit clear within the time out.
EFI_TIMEOUT
DRQ bit not clear within the time out.
Notes:
Read Status Register will clear interrupt status.
--*/
// 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 & (DRQ | BSY)) == 0) {
break;
}
if ((StatusRegister & (BSY | ERR)) == ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
EFI_STATUS
DRQClear2 (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
/*++
Name: DRQClear2
Purpose:
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.
Parameters:
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.
UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ clear.
Returns:
EFI_SUCCESS
DRQ bit clear within the time out.
EFI_TIMEOUT
DRQ bit not clear within the time out.
Notes:
Read Alternate Status Register will not clear interrupt status.
--*/
// 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 & (DRQ | BSY)) == 0) {
break;
}
if ((AltRegister & (BSY | ERR)) == ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
EFI_STATUS
DRQReady (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
/*++
Name: DRQReady
Purpose:
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.
Parameters:
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.
UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
Returns:
EFI_SUCCESS
DRQ bit set within the time out.
EFI_TIMEOUT
DRQ bit not set within the time out.
EFI_ABORTED
DRQ bit not set caused by the command abort.
Notes:
Read Status Register will clear interrupt status.
--*/
// 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 & (BSY | DRQ)) == DRQ) {
break;
}
if ((StatusRegister & (BSY | ERR)) == ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
EFI_STATUS
DRQReady2 (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
/*++
Name: DRQReady2
Purpose:
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.
Parameters:
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.
UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
Returns:
EFI_SUCCESS
DRQ bit set within the time out.
EFI_TIMEOUT
DRQ bit not set within the time out.
EFI_ABORTED
DRQ bit not set caused by the command abort.
Notes:
Read Alternate Status Register will not clear interrupt status.
--*/
// 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 & (BSY | DRQ)) == DRQ) {
break;
}
if ((AltRegister & (BSY | ERR)) == ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
EFI_STATUS
WaitForBSYClear (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
/*++
Name:
WaitForBSYClear
Purpose:
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.
Parameters:
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.
UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
Returns:
EFI_SUCCESS
BSY bit clear within the time out.
EFI_TIMEOUT
BSY bit not clear within the time out.
Notes:
Read Status Register will clear interrupt status.
--*/
// 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 & BSY) == 0x00) {
break;
}
//
// Stall for 30 us
//
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// WaitForBSYClear2
//
EFI_STATUS
WaitForBSYClear2 (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN TimeoutInMilliSeconds
)
/*++
Name:
WaitForBSYClear2
Purpose:
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.
Parameters:
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.
UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
Returns:
EFI_SUCCESS
BSY bit clear within the time out.
EFI_TIMEOUT
BSY bit not clear within the time out.
Notes:
Read Alternate Status Register will not clear interrupt status.
--*/
// 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 & BSY) == 0x00) {
break;
}
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// DRDYReady
//
EFI_STATUS
DRDYReady (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN DelayInMilliSeconds
)
/*++
Name:
DRDYReady
Purpose:
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.
Parameters:
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.
UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
Returns:
EFI_SUCCESS
DRDY bit set within the time out.
EFI_TIMEOUT
DRDY bit not set within the time out.
Notes:
Read Status Register will clear interrupt status.
--*/
// 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 & (DRDY | BSY)) == DRDY) {
break;
}
if ((StatusRegister & (BSY | ERR)) == ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
gBS->Stall (15);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// DRDYReady2
//
EFI_STATUS
DRDYReady2 (
IN IDE_BLK_IO_DEV *IdeDev,
IN UINTN DelayInMilliSeconds
)
/*++
Name:
DRDYReady2
Purpose:
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.
Parameters:
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.
UINTN IN TimeoutInMilliSeconds
used to designate the timeout for the DRQ ready.
Returns:
EFI_SUCCESS
DRDY bit set within the time out.
EFI_TIMEOUT
DRDY bit not set within the time out.
Notes:
Read Alternate Status Register will clear interrupt status.
--*/
// 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 & (DRDY | BSY)) == DRDY) {
break;
}
if ((AltRegister & (BSY | ERR)) == ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if ((ErrorRegister & ABRT_ERR) == ABRT_ERR) {
return EFI_ABORTED;
}
}
gBS->Stall (30);
Delay--;
} while (Delay);
if (Delay == 0) {
return EFI_TIMEOUT;
}
return EFI_SUCCESS;
}
//
// SwapStringChars
//
VOID
SwapStringChars (
IN CHAR8 *Destination,
IN CHAR8 *Source,
IN UINT32 Size
)
/*++
Name:
SwapStringChars
Purpose:
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.
Parameters:
CHAR8 IN *Destination
Indicates the destination string.
CHAR8 IN *Source
Indicates the source string.
UINT8 IN Size
the length of the string
Returns:
none
Notes:
--*/
// TODO: function comment is missing 'Routine Description:'
// TODO: function comment is missing 'Arguments:'
// TODO: Destination - add argument and description to function comment
// TODO: Source - add argument and description to function comment
// TODO: Size - add argument and description to function comment
{
UINT32 Index;
CHAR8 Temp;
for (Index = 0; Index < Size; Index += 2) {
Temp = Source[Index + 1];
Destination[Index + 1] = Source[Index];
Destination[Index] = Temp;
}
}
//
// ReleaseIdeResources
//
VOID
ReleaseIdeResources (
IN IDE_BLK_IO_DEV *IdeBlkIoDevice
)
/*++
Routing Description:
Release resources of an IDE device before stopping it.
Arguments:
IdeBlkIoDevice -- Standard IDE device private data structure
Returns:
NONE
---*/
// TODO: function comment is missing 'Routine Description:'
{
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);
}
gBS->FreePool (IdeBlkIoDevice);
IdeBlkIoDevice = NULL;
return ;
}
//
// SetDeviceTransferMode
//
EFI_STATUS
SetDeviceTransferMode (
IN IDE_BLK_IO_DEV *IdeDev,
IN ATA_TRANSFER_MODE *TransferMode
)
/*++
Routing Description:
Set the calculated Best transfer mode to a detected device
Arguments:
IdeDev -- Standard IDE device private data structure
TransferMode -- The device transfer mode to be set
Returns:
Set transfer mode Command execute status
---*/
// 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,
SET_FEATURES_CMD,
DeviceSelect,
0x03,
SectorCount,
0,
0,
0
);
return Status;
}
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
)
/*++
Routine Description:
Send ATA command into device with NON_DATA protocol
Arguments:
IdeDev - Standard IDE device private data structure
AtaCommand - The ATA command to be sent
Device - The value in Device register
Feature - The value in Feature register
SectorCount - The value in SectorCount register
LbaLow - The value in LBA_LOW register
LbaMiddle - The value in LBA_MIDDLE register
LbaHigh - The value in LBA_HIGH register
Returns:
EFI_SUCCESS - Reading succeed
EFI_ABORTED - Command failed
EFI_DEVICE_ERROR - Device status error
--*/
{
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
//
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
StatusRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
if ((StatusRegister & ERR) == ERR) {
//
// Failed to execute command, abort operation
//
return EFI_ABORTED;
}
return EFI_SUCCESS;
}
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
)
/*++
Routine Description:
Send ATA Ext command into device with NON_DATA protocol
Arguments:
IdeDev - Standard IDE device private data structure
AtaCommand - The ATA command to be sent
Device - The value in Device register
Feature - The value in Feature register
SectorCount - The value in SectorCount register
LbaAddress - The LBA address in 48-bit mode
Returns:
EFI_SUCCESS - Reading succeed
EFI_ABORTED - Command failed
EFI_DEVICE_ERROR - Device status error
--*/
{
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 & ERR) == ERR) {
//
// Failed to execute command, abort operation
//
return EFI_ABORTED;
}
return EFI_SUCCESS;
}
//
// SetDriveParameters
//
EFI_STATUS
SetDriveParameters (
IN IDE_BLK_IO_DEV *IdeDev,
IN ATA_DRIVE_PARMS *DriveParameters
)
/*++
Routine Description:
Set drive parameters for devices not support PACKETS command
Arguments:
IdeDev -- Standard IDE device private data structure
DriveParameters -- The device parameters to be set into the disk
Returns:
SetParameters Command execute status
--*/
{
EFI_STATUS Status;
UINT8 DeviceSelect;
DeviceSelect = 0;
DeviceSelect = (UINT8) ((IdeDev->Device) << 4);
//
// Send Init drive parameters
//
Status = AtaPioDataIn (
IdeDev,
NULL,
0,
INIT_DRIVE_PARAM_CMD,
(UINT8) (DeviceSelect + DriveParameters->Heads),
DriveParameters->Sector,
0,
0,
0
);
//
// Send Set Multiple parameters
//
Status = AtaPioDataIn (
IdeDev,
NULL,
0,
SET_MULTIPLE_MODE_CMD,
DeviceSelect,
DriveParameters->MultipleSector,
0,
0,
0
);
return Status;
}
EFI_STATUS
EnableInterrupt (
IN IDE_BLK_IO_DEV *IdeDev
)
/*++
Routine Description:
TODO: Add function description
Arguments:
IdeDev - TODO: add argument description
Returns:
EFI_SUCCESS - TODO: Add description for return value
--*/
{
UINT8 DeviceControl;
//
// Enable interrupt for DMA operation
//
DeviceControl = 0;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Alt.DeviceControl, DeviceControl);
return EFI_SUCCESS;
}
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