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

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/** @file
Copyright (c) 2006 - 2007 Intel Corporation. <BR>
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.
@par Revision Reference:
2002-6: Add Atapi6 enhancement, support >120GB hard disk, including
update - ATAIdentity() func
update - AtaBlockIoReadBlocks() func
update - AtaBlockIoWriteBlocks() func
add - AtaAtapi6Identify() func
add - AtaReadSectorsExt() func
add - AtaWriteSectorsExt() func
add - AtaPioDataInExt() func
add - AtaPioDataOutExt() func
**/
#include "idebus.h"
/**
Sends out an ATA Identify Command to the specified device.
This function is called by DiscoverIdeDevice() during its device
identification. It sends out the ATA Identify Command to the
specified device. Only ATA device responses to this command. If
the command succeeds, it returns the Identify data structure which
contains information about the device. This function extracts the
information it needs to fill the IDE_BLK_IO_DEV data structure,
including device type, media block size, media capacity, and etc.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure,used
to record all the information of the IDE device.
@retval EFI_SUCCESS Identify ATA device successfully.
@retval EFI_DEVICE_ERROR ATA Identify Device Command failed or
device is not ATA device.
@note
parameter IdeDev will be updated in this function.
**/
EFI_STATUS
ATAIdentify (
IN IDE_BLK_IO_DEV *IdeDev
)
{
EFI_STATUS Status;
EFI_IDENTIFY_DATA *AtaIdentifyPointer;
UINT32 Capacity;
UINT8 DeviceSelect;
UINTN Retry;
//
// AtaIdentifyPointer is used for accommodating returned IDENTIFY data of
// the ATA Identify command
//
AtaIdentifyPointer = (EFI_IDENTIFY_DATA *) AllocateZeroPool (sizeof (EFI_IDENTIFY_DATA));
//
// use ATA PIO Data In protocol to send ATA Identify command
// and receive data from device
//
DeviceSelect = (UINT8) ((IdeDev->Device) << 4);
Retry = 3;
while (Retry > 0) {
Status = AtaPioDataIn (
IdeDev,
(VOID *) AtaIdentifyPointer,
sizeof (EFI_IDENTIFY_DATA),
ATA_CMD_IDENTIFY_DRIVE,
DeviceSelect,
0,
0,
0,
0
);
//
// If ATA Identify command succeeds, then according to the received
// IDENTIFY data,
// identify the device type ( ATA or not ).
// If ATA device, fill the information in IdeDev.
// If not ATA device, return IDE_DEVICE_ERROR
//
if (!EFI_ERROR (Status)) {
IdeDev->pIdData = AtaIdentifyPointer;
//
// Print ATA Module Name
//
PrintAtaModuleName (IdeDev);
//
// bit 15 of pAtaIdentify->config is used to identify whether device is
// ATA device or ATAPI device.
// if 0, means ATA device; if 1, means ATAPI device.
//
if ((AtaIdentifyPointer->AtaData.config & 0x8000) == 0x00) {
//
// Detect if support S.M.A.R.T. If yes, enable it as default
//
AtaSMARTSupport (IdeDev);
//
// Check whether this device needs 48-bit addressing (ATAPI-6 ata device)
//
Status = AtaAtapi6Identify (IdeDev);
if (!EFI_ERROR (Status)) {
//
// It's a disk with >120GB capacity, initialized in AtaAtapi6Identify()
//
return EFI_SUCCESS;
} else if (Status == EFI_DEVICE_ERROR) {
//
// Some disk with big capacity (>200GB) is slow when being identified
// and will return all zero for word83.
// We try twice at first. If it fails, we do a SoftRest and try again.
//
Retry--;
if (Retry == 1) {
//
// Do a SoftRest before the third attempt.
//
AtaSoftReset (IdeDev);
}
continue;
}
//
// This is a hard disk <= 120GB capacity, treat it as normal hard disk
//
IdeDev->Type = IdeHardDisk;
//
// Block Media Information:
// Media->LogicalPartition , Media->WriteCaching will be filled
// in the DiscoverIdeDevcie() function.
//
IdeDev->BlkIo.Media->IoAlign = 4;
IdeDev->BlkIo.Media->MediaId = 1;
IdeDev->BlkIo.Media->RemovableMedia = FALSE;
IdeDev->BlkIo.Media->MediaPresent = TRUE;
IdeDev->BlkIo.Media->ReadOnly = FALSE;
IdeDev->BlkIo.Media->BlockSize = 0x200;
//
// Calculate device capacity
//
Capacity = ((UINT32)AtaIdentifyPointer->AtaData.user_addressable_sectors_hi << 16) |
AtaIdentifyPointer->AtaData.user_addressable_sectors_lo ;
IdeDev->BlkIo.Media->LastBlock = Capacity - 1;
return EFI_SUCCESS;
}
}
break;
}
gBS->FreePool (AtaIdentifyPointer);
//
// Make sure the pIdData will not be freed again.
//
IdeDev->pIdData = NULL;
return EFI_DEVICE_ERROR;
}
/**
This function is called by ATAIdentify() to identity whether this disk
supports ATA/ATAPI6 48bit addressing, ie support >120G capacity
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@retval EFI_SUCCESS The disk specified by IdeDev is a Atapi6 supported one
and 48-bit addressing must be used
@retval EFI_UNSUPPORTED The disk dosn't not support Atapi6 or it supports but
the capacity is below 120G, 48bit addressing is not needed
@retval EFI_DEVICE_ERROR The identify data in IdeDev is incorrect
@retval EFI_INVALID_PARAMETER The identify data in IdeDev is NULL.
@note
This function must be called after DEVICE_IDENTITY command has been
successfully returned
**/
EFI_STATUS
AtaAtapi6Identify (
IN IDE_BLK_IO_DEV *IdeDev
)
{
UINT8 Index;
EFI_LBA TmpLba;
EFI_LBA Capacity;
EFI_IDENTIFY_DATA *Atapi6IdentifyStruct;
if (IdeDev->pIdData == NULL) {
return EFI_INVALID_PARAMETER;
}
Atapi6IdentifyStruct = IdeDev->pIdData;
if ((Atapi6IdentifyStruct->AtapiData.cmd_set_support_83 & (BIT15 | BIT14)) != 0x4000) {
//
// Per ATA-6 spec, word83: bit15 is zero and bit14 is one
//
return EFI_DEVICE_ERROR;
}
if ((Atapi6IdentifyStruct->AtapiData.cmd_set_support_83 & BIT10) == 0) {
//
// The device dosn't support 48 bit addressing
//
return EFI_UNSUPPORTED;
}
//
// 48 bit address feature set is supported, get maximum capacity
//
Capacity = Atapi6IdentifyStruct->AtapiData.max_user_lba_for_48bit_addr[0];
for (Index = 1; Index < 4; Index++) {
//
// Lower byte goes first: word[100] is the lowest word, word[103] is highest
//
TmpLba = Atapi6IdentifyStruct->AtapiData.max_user_lba_for_48bit_addr[Index];
Capacity |= LShiftU64 (TmpLba, 16 * Index);
}
if (Capacity > MAX_28BIT_ADDRESSING_CAPACITY) {
//
// Capacity exceeds 120GB. 48-bit addressing is really needed
//
IdeDev->Type = Ide48bitAddressingHardDisk;
//
// Fill block media information:Media->LogicalPartition ,
// Media->WriteCaching will be filledin the DiscoverIdeDevcie() function.
//
IdeDev->BlkIo.Media->IoAlign = 4;
IdeDev->BlkIo.Media->MediaId = 1;
IdeDev->BlkIo.Media->RemovableMedia = FALSE;
IdeDev->BlkIo.Media->MediaPresent = TRUE;
IdeDev->BlkIo.Media->ReadOnly = FALSE;
IdeDev->BlkIo.Media->BlockSize = 0x200;
IdeDev->BlkIo.Media->LastBlock = Capacity - 1;
return EFI_SUCCESS;
}
return EFI_UNSUPPORTED;
}
/**
This function is called by ATAIdentify() or ATAPIIdentify()
to print device's module name.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
**/
VOID
PrintAtaModuleName (
IN IDE_BLK_IO_DEV *IdeDev
)
{
if (IdeDev->pIdData == NULL) {
return ;
}
SwapStringChars (IdeDev->ModelName, IdeDev->pIdData->AtaData.ModelName, 40);
IdeDev->ModelName[40] = 0x00;
}
/**
This function is used to send out ATA commands conforms to the
PIO Data In Protocol.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *Buffer
buffer contained data transferred from device to host.
@param[in] ByteCount
data size in byte unit of the buffer.
@param[in] AtaCommand
value of the Command Register
@param[in] Head
value of the Head/Device Register
@param[in] SectorCount
value of the Sector Count Register
@param[in] SectorNumber
value of the Sector Number Register
@param[in] CylinderLsb
value of the low byte of the Cylinder Register
@param[in] CylinderMsb
value of the high byte of the Cylinder Register
@retval EFI_SUCCESS send out the ATA command and device send required
data successfully.
@retval EFI_DEVICE_ERROR command sent failed.
**/
EFI_STATUS
AtaPioDataIn (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *Buffer,
IN UINT32 ByteCount,
IN UINT8 AtaCommand,
IN UINT8 Head,
IN UINT8 SectorCount,
IN UINT8 SectorNumber,
IN UINT8 CylinderLsb,
IN UINT8 CylinderMsb
)
{
UINTN WordCount;
UINTN Increment;
UINT16 *Buffer16;
EFI_STATUS Status;
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// e0:1110,0000-- bit7 and bit5 are reserved bits.
// bit6 set means LBA mode
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((IdeDev->Device << 4) | 0xe0 | Head)
);
//
// All ATAPI device's ATA commands can be issued regardless of the
// state of the DRDY
//
if (IdeDev->Type == IdeHardDisk) {
Status = DRDYReady (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
}
//
// set all the command parameters
// Before write to all the following registers, BSY and DRQ must be 0.
//
Status = DRQClear2 (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
if (AtaCommand == ATA_CMD_SET_FEATURES) {
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Feature, 0x03);
}
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorCount, SectorCount);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, SectorNumber);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, CylinderLsb);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, CylinderMsb);
//
// send command via Command Register
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, AtaCommand);
Buffer16 = (UINT16 *) Buffer;
//
// According to PIO data in protocol, host can perform a series of reads to
// the data register after each time device set DRQ ready;
// The data size of "a series of read" is command specific.
// For most ATA command, data size received from device will not exceed
// 1 sector, hence the data size for "a series of read" can be the whole data
// size of one command request.
// For ATA command such as Read Sector command, the data size of one ATA
// command request is often larger than 1 sector, according to the
// Read Sector command, the data size of "a series of read" is exactly 1
// sector.
// Here for simplification reason, we specify the data size for
// "a series of read" to 1 sector (256 words) if data size of one ATA command
// request is larger than 256 words.
//
Increment = 256;
//
// used to record bytes of currently transfered data
//
WordCount = 0;
while (WordCount < ByteCount / 2) {
//
// Poll DRQ bit set, data transfer can be performed only when DRQ is ready.
//
Status = DRQReady2 (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
Status = CheckErrorStatus (IdeDev);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Get the byte count for one series of read
//
if ((WordCount + Increment) > ByteCount / 2) {
Increment = ByteCount / 2 - WordCount;
}
IDEReadPortWMultiple (
IdeDev->PciIo,
IdeDev->IoPort->Data,
Increment,
Buffer16
);
WordCount += Increment;
Buffer16 += Increment;
}
DRQClear (IdeDev, ATATIMEOUT);
return CheckErrorStatus (IdeDev);
}
/**
This function is used to send out ATA commands conforms to the
PIO Data Out Protocol.
@param *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param *Buffer buffer contained data transferred from host to device.
@param ByteCount data size in byte unit of the buffer.
@param AtaCommand value of the Command Register
@param Head value of the Head/Device Register
@param SectorCount value of the Sector Count Register
@param SectorNumber value of the Sector Number Register
@param CylinderLsb value of the low byte of the Cylinder Register
@param CylinderMsb value of the high byte of the Cylinder Register
@retval EFI_SUCCESS send out the ATA command and device received required
data successfully.
@retval EFI_DEVICE_ERROR command sent failed.
**/
EFI_STATUS
AtaPioDataOut (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *Buffer,
IN UINT32 ByteCount,
IN UINT8 AtaCommand,
IN UINT8 Head,
IN UINT8 SectorCount,
IN UINT8 SectorNumber,
IN UINT8 CylinderLsb,
IN UINT8 CylinderMsb
)
{
UINTN WordCount;
UINTN Increment;
UINT16 *Buffer16;
EFI_STATUS Status;
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// select device via Head/Device register.
// Before write Head/Device register, BSY and DRQ must be 0.
//
Status = DRQClear2 (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// e0:1110,0000-- bit7 and bit5 are reserved bits.
// bit6 set means LBA mode
//
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
(UINT8) ((IdeDev->Device << 4) | 0xe0 | Head)
);
Status = DRDYReady (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// set all the command parameters
// Before write to all the following registers, BSY and DRQ must be 0.
//
Status = DRQClear2 (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorCount, SectorCount);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, SectorNumber);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, CylinderLsb);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, CylinderMsb);
//
// send command via Command Register
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, AtaCommand);
Buffer16 = (UINT16 *) Buffer;
//
// According to PIO data out protocol, host can perform a series of
// writes to the data register after each time device set DRQ ready;
// The data size of "a series of read" is command specific.
// For most ATA command, data size written to device will not exceed 1 sector,
// hence the data size for "a series of write" can be the data size of one
// command request.
// For ATA command such as Write Sector command, the data size of one
// ATA command request is often larger than 1 sector, according to the
// Write Sector command, the data size of "a series of read" is exactly
// 1 sector.
// Here for simplification reason, we specify the data size for
// "a series of write" to 1 sector (256 words) if data size of one ATA command
// request is larger than 256 words.
//
Increment = 256;
WordCount = 0;
while (WordCount < ByteCount / 2) {
//
// DRQReady2-- read Alternate Status Register to determine the DRQ bit
// data transfer can be performed only when DRQ is ready.
//
Status = DRQReady2 (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
Status = CheckErrorStatus (IdeDev);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Check the remaining byte count is less than 512 bytes
//
if ((WordCount + Increment) > ByteCount / 2) {
Increment = ByteCount / 2 - WordCount;
}
//
// perform a series of write without check DRQ ready
//
IDEWritePortWMultiple (
IdeDev->PciIo,
IdeDev->IoPort->Data,
Increment,
Buffer16
);
WordCount += Increment;
Buffer16 += Increment;
}
DRQClear (IdeDev, ATATIMEOUT);
return CheckErrorStatus (IdeDev);
}
/**
This function is used to analyze the Status Register and print out
some debug information and if there is ERR bit set in the Status
Register, the Error Register's value is also be parsed and print out.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@retval EFI_SUCCESS No err information in the Status Register.
@retval EFI_DEVICE_ERROR Any err information in the Status Register.
**/
EFI_STATUS
CheckErrorStatus (
IN IDE_BLK_IO_DEV *IdeDev
)
{
UINT8 StatusRegister;
UINT8 ErrorRegister;
StatusRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Status);
DEBUG_CODE_BEGIN ();
if (StatusRegister & ATA_STSREG_DWF) {
DEBUG (
(EFI_D_BLKIO,
"CheckErrorStatus()-- %02x : Error : Write Fault\n",
StatusRegister)
);
}
if (StatusRegister & ATA_STSREG_CORR) {
DEBUG (
(EFI_D_BLKIO,
"CheckErrorStatus()-- %02x : Error : Corrected Data\n",
StatusRegister)
);
}
if (StatusRegister & ATA_STSREG_ERR) {
ErrorRegister = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Error);
if (ErrorRegister & ATA_ERRREG_BBK) {
DEBUG (
(EFI_D_BLKIO,
"CheckErrorStatus()-- %02x : Error : Bad Block Detected\n",
ErrorRegister)
);
}
if (ErrorRegister & ATA_ERRREG_UNC) {
DEBUG (
(EFI_D_BLKIO,
"CheckErrorStatus()-- %02x : Error : Uncorrectable Data\n",
ErrorRegister)
);
}
if (ErrorRegister & ATA_ERRREG_MC) {
DEBUG (
(EFI_D_BLKIO,
"CheckErrorStatus()-- %02x : Error : Media Change\n",
ErrorRegister)
);
}
if (ErrorRegister & ATA_ERRREG_ABRT) {
DEBUG (
(EFI_D_BLKIO,
"CheckErrorStatus()-- %02x : Error : Abort\n",
ErrorRegister)
);
}
if (ErrorRegister & ATA_ERRREG_TK0NF) {
DEBUG (
(EFI_D_BLKIO,
"CheckErrorStatus()-- %02x : Error : Track 0 Not Found\n",
ErrorRegister)
);
}
if (ErrorRegister & ATA_ERRREG_AMNF) {
DEBUG (
(EFI_D_BLKIO,
"CheckErrorStatus()-- %02x : Error : Address Mark Not Found\n",
ErrorRegister)
);
}
}
DEBUG_CODE_END ();
if ((StatusRegister & (ATA_STSREG_ERR | ATA_STSREG_DWF | ATA_STSREG_CORR)) == 0) {
return EFI_SUCCESS;
}
return EFI_DEVICE_ERROR;
}
/**
This function is called by the AtaBlkIoReadBlocks() to perform
reading from media in block unit.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *DataBuffer
A pointer to the destination buffer for the data.
@param[in] Lba
The starting logical block address to read from
on the device media.
@param[in] NumberOfBlocks
The number of transfer data blocks.
@return return status is fully dependent on the return status
of AtaPioDataIn() function.
**/
EFI_STATUS
AtaReadSectors (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *DataBuffer,
IN EFI_LBA Lba,
IN UINTN NumberOfBlocks
)
{
EFI_STATUS Status;
UINTN BlocksRemaining;
UINT32 Lba32;
UINT8 Lba0;
UINT8 Lba1;
UINT8 Lba2;
UINT8 Lba3;
UINT8 AtaCommand;
UINT8 SectorCount8;
UINT16 SectorCount;
UINTN ByteCount;
VOID *Buffer;
Buffer = DataBuffer;
//
// Using ATA Read Sector(s) command (opcode=0x20) with PIO DATA IN protocol
//
AtaCommand = ATA_CMD_READ_SECTORS;
BlocksRemaining = NumberOfBlocks;
Lba32 = (UINT32) Lba;
Status = EFI_SUCCESS;
while (BlocksRemaining > 0) {
//
// in ATA-3 spec, LBA is in 28 bit width
//
Lba0 = (UINT8) Lba32;
Lba1 = (UINT8) (Lba32 >> 8);
Lba2 = (UINT8) (Lba32 >> 16);
//
// low 4 bit of Lba3 stands for LBA bit24~bit27.
//
Lba3 = (UINT8) ((Lba32 >> 24) & 0x0f);
if (BlocksRemaining >= 0x100) {
//
// SectorCount8 is sent to Sector Count register, 0x00 means 256
// sectors to be read
//
SectorCount8 = 0x00;
//
// SectorCount is used to record the number of sectors to be read
//
SectorCount = 256;
} else {
SectorCount8 = (UINT8) BlocksRemaining;
SectorCount = (UINT16) BlocksRemaining;
}
//
// ByteCount is the number of bytes that will be read
//
ByteCount = SectorCount * (IdeDev->BlkIo.Media->BlockSize);
//
// call AtaPioDataIn() to send Read Sector Command and receive data read
//
Status = AtaPioDataIn (
IdeDev,
Buffer,
(UINT32) ByteCount,
AtaCommand,
Lba3,
SectorCount8,
Lba0,
Lba1,
Lba2
);
if (EFI_ERROR (Status)) {
return Status;
}
Lba32 += SectorCount;
Buffer = ((UINT8 *) Buffer + ByteCount);
BlocksRemaining -= SectorCount;
}
return Status;
}
/**
This function is called by the AtaBlkIoWriteBlocks() to perform
writing onto media in block unit.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure,used
to record all the information of the IDE device.
@param[in] *BufferData
A pointer to the source buffer for the data.
@param[in] Lba
The starting logical block address to write onto
the device media.
@param[in] NumberOfBlocks
The number of transfer data blocks.
@return return status is fully dependent on the return status
of AtaPioDataOut() function.
**/
EFI_STATUS
AtaWriteSectors (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *BufferData,
IN EFI_LBA Lba,
IN UINTN NumberOfBlocks
)
{
EFI_STATUS Status;
UINTN BlocksRemaining;
UINT32 Lba32;
UINT8 Lba0;
UINT8 Lba1;
UINT8 Lba2;
UINT8 Lba3;
UINT8 AtaCommand;
UINT8 SectorCount8;
UINT16 SectorCount;
UINTN ByteCount;
VOID *Buffer;
Buffer = BufferData;
//
// Using Write Sector(s) command (opcode=0x30) with PIO DATA OUT protocol
//
AtaCommand = ATA_CMD_WRITE_SECTORS;
BlocksRemaining = NumberOfBlocks;
Lba32 = (UINT32) Lba;
Status = EFI_SUCCESS;
while (BlocksRemaining > 0) {
Lba0 = (UINT8) Lba32;
Lba1 = (UINT8) (Lba32 >> 8);
Lba2 = (UINT8) (Lba32 >> 16);
Lba3 = (UINT8) ((Lba32 >> 24) & 0x0f);
if (BlocksRemaining >= 0x100) {
//
// SectorCount8 is sent to Sector Count register, 0x00 means 256 sectors
// to be written
//
SectorCount8 = 0x00;
//
// SectorCount is used to record the number of sectors to be written
//
SectorCount = 256;
} else {
SectorCount8 = (UINT8) BlocksRemaining;
SectorCount = (UINT16) BlocksRemaining;
}
ByteCount = SectorCount * (IdeDev->BlkIo.Media->BlockSize);
Status = AtaPioDataOut (
IdeDev,
Buffer,
(UINT32) ByteCount,
AtaCommand,
Lba3,
SectorCount8,
Lba0,
Lba1,
Lba2
);
if (EFI_ERROR (Status)) {
return Status;
}
Lba32 += SectorCount;
Buffer = ((UINT8 *) Buffer + ByteCount);
BlocksRemaining -= SectorCount;
}
return Status;
}
/**
This function is used to implement the Soft Reset on the specified
device. But, the ATA Soft Reset mechanism is so strong a reset method
that it will force resetting on both devices connected to the
same cable.
It is called by IdeBlkIoReset(), a interface function of Block
I/O protocol.
This function can also be used by the ATAPI device to perform reset when
ATAPI Reset command is failed.
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@retval EFI_SUCCESS Soft reset completes successfully.
@retval EFI_DEVICE_ERROR Any step during the reset process is failed.
@note
The registers initial values after ATA soft reset are different
to the ATA device and ATAPI device.
**/
EFI_STATUS
AtaSoftReset (
IN IDE_BLK_IO_DEV *IdeDev
)
{
UINT8 DeviceControl;
DeviceControl = 0;
//
// set SRST bit to initiate soft reset
//
DeviceControl |= ATA_CTLREG_SRST;
//
// disable Interrupt
//
DeviceControl |= BIT1;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Alt.DeviceControl, DeviceControl);
//
// SRST should assert for at least 5 us, we use 10 us for
// better compatibility
//
gBS->Stall (10);
//
// Enable interrupt to support UDMA, and clear SRST bit
//
DeviceControl = 0;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Alt.DeviceControl, DeviceControl);
//
// Wait for at least 2 ms to check BSY status, we use 10 ms
// for better compatibility
//
gBS->Stall(10000);
//
// slave device needs at most 31s to clear BSY
//
if (WaitForBSYClear (IdeDev, 31000) == EFI_TIMEOUT) {
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
This function is the ATA implementation for ReadBlocks in the
Block I/O Protocol interface.
@param[in] *IdeBlkIoDevice
Indicates the calling context.
@param[in] MediaId
The media id that the read request is for.
@param[in] LBA
The starting logical block address to read from
on the device.
@param[in] BufferSize
The size of the Buffer in bytes. This must be a
multiple of the intrinsic block size of the device.
@param[out] *Buffer
A pointer to the destination buffer for the data.
The caller is responsible for either having implicit
or explicit ownership of the memory that data is read into.
@retval EFI_SUCCESS Read Blocks successfully.
@retval EFI_DEVICE_ERROR Read Blocks failed.
@retval EFI_NO_MEDIA There is no media in the device.
@retval EFI_MEDIA_CHANGE The MediaId is not for the current media.
@retval EFI_BAD_BUFFER_SIZE
The BufferSize parameter is not a multiple of the
intrinsic block size of the device.
@retval EFI_INVALID_PARAMETER
The read request contains LBAs that are not valid,
or the data buffer is not valid.
@note
If Read Block error because of device error, this function will call
AtaSoftReset() function to reset device.
**/
EFI_STATUS
AtaBlkIoReadBlocks (
IN IDE_BLK_IO_DEV *IdeBlkIoDevice,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
OUT VOID *Buffer
)
{
EFI_BLOCK_IO_MEDIA *Media;
UINTN BlockSize;
UINTN NumberOfBlocks;
EFI_STATUS Status;
if (Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}
if (BufferSize == 0) {
return EFI_SUCCESS;
}
Status = EFI_SUCCESS;
//
// Get the intrinsic block size
//
Media = IdeBlkIoDevice->BlkIo.Media;
BlockSize = Media->BlockSize;
NumberOfBlocks = BufferSize / BlockSize;
if (MediaId != Media->MediaId) {
return EFI_MEDIA_CHANGED;
}
if (BufferSize % BlockSize != 0) {
return EFI_BAD_BUFFER_SIZE;
}
if (!(Media->MediaPresent)) {
return EFI_NO_MEDIA;
}
if (LBA > Media->LastBlock) {
return EFI_INVALID_PARAMETER;
}
if ((LBA + NumberOfBlocks - 1) > Media->LastBlock) {
return EFI_INVALID_PARAMETER;
}
if ((Media->IoAlign > 1) && (((UINTN) Buffer & (Media->IoAlign - 1)) != 0)) {
return EFI_INVALID_PARAMETER;
}
Status = EFI_SUCCESS;
if (IdeBlkIoDevice->Type == Ide48bitAddressingHardDisk) {
//
// For ATA/ATAPI-6 device(capcity > 120GB), use ATA-6 read block mechanism
//
if (IdeBlkIoDevice->UdmaMode.Valid) {
Status = AtaUdmaReadExt (IdeBlkIoDevice, Buffer, LBA, NumberOfBlocks);
} else {
Status = AtaReadSectorsExt (IdeBlkIoDevice, Buffer, LBA, NumberOfBlocks);
}
} else {
//
// For ATA-3 compatible device, use ATA-3 read block mechanism
//
if (IdeBlkIoDevice->UdmaMode.Valid) {
Status = AtaUdmaRead (IdeBlkIoDevice, Buffer, LBA, NumberOfBlocks);
} else {
Status = AtaReadSectors (IdeBlkIoDevice, Buffer, LBA, NumberOfBlocks);
}
}
if (EFI_ERROR (Status)) {
AtaSoftReset (IdeBlkIoDevice);
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
This function is the ATA implementation for WriteBlocks in the
Block I/O Protocol interface.
@param[in] *IdeBlkIoDevice
Indicates the calling context.
@param[in] MediaId
The media id that the write request is for.
@param[in] LBA
The starting logical block address to write onto
the device.
@param[in] BufferSize
The size of the Buffer in bytes. This must be a
multiple of the intrinsic block size of the device.
@param[out] *Buffer
A pointer to the source buffer for the data.
The caller is responsible for either having implicit
or explicit ownership of the memory that data is
written from.
@retval EFI_SUCCESS Write Blocks successfully.
@retval EFI_DEVICE_ERROR Write Blocks failed.
@retval EFI_NO_MEDIA There is no media in the device.
@retval EFI_MEDIA_CHANGE The MediaId is not for the current media.
@retval EFI_BAD_BUFFER_SIZE
The BufferSize parameter is not a multiple of the
intrinsic block size of the device.
@retval EFI_INVALID_PARAMETER
The write request contains LBAs that are not valid,
or the data buffer is not valid.
@note
If Write Block error because of device error, this function will call
AtaSoftReset() function to reset device.
**/
EFI_STATUS
AtaBlkIoWriteBlocks (
IN IDE_BLK_IO_DEV *IdeBlkIoDevice,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
OUT VOID *Buffer
)
{
EFI_BLOCK_IO_MEDIA *Media;
UINTN BlockSize;
UINTN NumberOfBlocks;
EFI_STATUS Status;
if (Buffer == NULL) {
return EFI_INVALID_PARAMETER;
}
if (BufferSize == 0) {
return EFI_SUCCESS;
}
Status = EFI_SUCCESS;
//
// Get the intrinsic block size
//
Media = IdeBlkIoDevice->BlkIo.Media;
BlockSize = Media->BlockSize;
NumberOfBlocks = BufferSize / BlockSize;
if (MediaId != Media->MediaId) {
return EFI_MEDIA_CHANGED;
}
if (BufferSize % BlockSize != 0) {
return EFI_BAD_BUFFER_SIZE;
}
if (LBA > Media->LastBlock) {
return EFI_INVALID_PARAMETER;
}
if ((LBA + NumberOfBlocks - 1) > Media->LastBlock) {
return EFI_INVALID_PARAMETER;
}
if ((Media->IoAlign > 1) && (((UINTN) Buffer & (Media->IoAlign - 1)) != 0)) {
return EFI_INVALID_PARAMETER;
}
Status = EFI_SUCCESS;
if (IdeBlkIoDevice->Type == Ide48bitAddressingHardDisk) {
//
// For ATA/ATAPI-6 device(capcity > 120GB), use ATA-6 write block mechanism
//
if (IdeBlkIoDevice->UdmaMode.Valid) {
Status = AtaUdmaWriteExt (IdeBlkIoDevice, Buffer, LBA, NumberOfBlocks);
} else {
Status = AtaWriteSectorsExt (IdeBlkIoDevice, Buffer, LBA, NumberOfBlocks);
}
} else {
//
// For ATA-3 compatible device, use ATA-3 write block mechanism
//
if (IdeBlkIoDevice->UdmaMode.Valid) {
Status = AtaUdmaWrite (IdeBlkIoDevice, Buffer, LBA, NumberOfBlocks);
} else {
Status = AtaWriteSectors (IdeBlkIoDevice, Buffer, LBA, NumberOfBlocks);
}
}
if (EFI_ERROR (Status)) {
AtaSoftReset (IdeBlkIoDevice);
return EFI_DEVICE_ERROR;
}
return EFI_SUCCESS;
}
/**
This function is called by the AtaBlkIoReadBlocks() to perform
reading from media in block unit. The function has been enhanced to
support >120GB access and transfer at most 65536 blocks per command
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *DataBuffer A pointer to the destination buffer for the data.
@param[in] StartLba The starting logical block address to read from
on the device media.
@param[in] NumberOfBlocks The number of transfer data blocks.
@return return status is fully dependent on the return status
of AtaPioDataInExt() function.
**/
EFI_STATUS
AtaReadSectorsExt (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *DataBuffer,
IN EFI_LBA StartLba,
IN UINTN NumberOfBlocks
)
{
EFI_STATUS Status;
UINTN BlocksRemaining;
EFI_LBA Lba64;
UINT8 AtaCommand;
UINT16 SectorCount;
UINT32 ByteCount;
VOID *Buffer;
//
// Using ATA "Read Sectors Ext" command(opcode=0x24) with PIO DATA IN protocol
//
AtaCommand = ATA_CMD_READ_SECTORS_EXT;
Buffer = DataBuffer;
BlocksRemaining = NumberOfBlocks;
Lba64 = StartLba;
Status = EFI_SUCCESS;
while (BlocksRemaining > 0) {
if (BlocksRemaining >= 0x10000) {
//
// SectorCount is used to record the number of sectors to be read
// Max 65536 sectors can be transfered at a time.
//
SectorCount = 0xffff;
} else {
SectorCount = (UINT16) BlocksRemaining;
}
//
// ByteCount is the number of bytes that will be read
//
ByteCount = SectorCount * (IdeDev->BlkIo.Media->BlockSize);
//
// call AtaPioDataInExt() to send Read Sector Command and receive data read
//
Status = AtaPioDataInExt (
IdeDev,
Buffer,
ByteCount,
AtaCommand,
Lba64,
SectorCount
);
if (EFI_ERROR (Status)) {
return Status;
}
Lba64 += SectorCount;
Buffer = ((UINT8 *) Buffer + ByteCount);
BlocksRemaining -= SectorCount;
}
return Status;
}
/**
This function is called by the AtaBlkIoWriteBlocks() to perform
writing onto media in block unit. The function has been enhanced to
support >120GB access and transfer at most 65536 blocks per command
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure,used
to record all the information of the IDE device.
@param[in] *DataBuffer
A pointer to the source buffer for the data.
@param[in] Lba
The starting logical block address to write onto
the device media.
@param[in] NumberOfBlocks
The number of transfer data blocks.
@return status is fully dependent on the return status
of AtaPioDataOutExt() function.
**/
EFI_STATUS
AtaWriteSectorsExt (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *DataBuffer,
IN EFI_LBA StartLba,
IN UINTN NumberOfBlocks
)
{
EFI_STATUS Status;
EFI_LBA Lba64;
UINTN BlocksRemaining;
UINT8 AtaCommand;
UINT16 SectorCount;
UINT32 ByteCount;
VOID *Buffer;
//
// Using ATA "Write Sectors Ext" cmd(opcode=0x24) with PIO DATA OUT protocol
//
AtaCommand = ATA_CMD_WRITE_SECTORS_EXT;
Lba64 = StartLba;
Buffer = DataBuffer;
BlocksRemaining = NumberOfBlocks;
Status = EFI_SUCCESS;
while (BlocksRemaining > 0) {
if (BlocksRemaining >= 0x10000) {
//
// SectorCount is used to record the number of sectors to be written.
// Max 65536 sectors can be transfered at a time.
//
SectorCount = 0xffff;
} else {
SectorCount = (UINT16) BlocksRemaining;
}
//
// ByteCount is the number of bytes that will be written
//
ByteCount = SectorCount * (IdeDev->BlkIo.Media->BlockSize);
//
// Call AtaPioDataOutExt() to send "Write Sectors Ext" Command
//
Status = AtaPioDataOutExt (
IdeDev,
Buffer,
ByteCount,
AtaCommand,
Lba64,
SectorCount
);
if (EFI_ERROR (Status)) {
return Status;
}
Lba64 += SectorCount;
Buffer = ((UINT8 *) Buffer + ByteCount);
BlocksRemaining -= SectorCount;
}
return Status;
}
/**
This function is used to send out ATA commands conforms to the
PIO Data In Protocol, supporting ATA/ATAPI-6 standard
Comparing with ATA-3 data in protocol, we have two differents here:<BR>
1. Do NOT wait for DRQ clear before sending command into IDE device.(the
wait will frequently fail... cause writing function return error)
2. Do NOT wait for DRQ clear after all data readed.(the wait greatly
slow down writing performance by 100 times!)
@param[in] *IdeDev pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in,out] *Buffer buffer contained data transferred from device to host.
@param[in] ByteCount data size in byte unit of the buffer.
@param[in] AtaCommand value of the Command Register
@param[in] StartLba the start LBA of this transaction
@param[in] SectorCount the count of sectors to be transfered
@retval EFI_SUCCESS send out the ATA command and device send required
data successfully.
@retval EFI_DEVICE_ERROR command sent failed.
**/
EFI_STATUS
AtaPioDataInExt (
IN IDE_BLK_IO_DEV *IdeDev,
IN OUT VOID *Buffer,
IN UINT32 ByteCount,
IN UINT8 AtaCommand,
IN EFI_LBA StartLba,
IN UINT16 SectorCount
)
{
UINT8 DevSel;
UINT8 SectorCount8;
UINT8 LbaLow;
UINT8 LbaMid;
UINT8 LbaHigh;
UINTN WordCount;
UINTN Increment;
UINT16 *Buffer16;
EFI_STATUS Status;
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Select device, set bit6 as 1 to indicate LBA mode is used
//
DevSel = (UINT8) (IdeDev->Device << 4);
DevSel |= 0x40;
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
DevSel
);
//
// Wait for DRDY singnal asserting. ATAPI device needn't wait
//
if ( (IdeDev->Type == IdeHardDisk) ||
(IdeDev->Type == Ide48bitAddressingHardDisk)) {
Status = DRDYReady (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
}
//
// Fill feature register if needed
//
if (AtaCommand == ATA_CMD_SET_FEATURES) {
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Feature, 0x03);
}
//
// 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 (StartLba, 24);
LbaMid = (UINT8) RShiftU64 (StartLba, 32);
LbaHigh = (UINT8) RShiftU64 (StartLba, 40);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, LbaLow);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, LbaMid);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, LbaHigh);
LbaLow = (UINT8) StartLba;
LbaMid = (UINT8) RShiftU64 (StartLba, 8);
LbaHigh = (UINT8) RShiftU64 (StartLba, 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, invoking the processing of this command
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, AtaCommand);
Buffer16 = (UINT16 *) Buffer;
//
// According to PIO data in protocol, host can perform a series of reads to
// the data register after each time device set DRQ ready;
//
//
// 256 words
//
Increment = 256;
//
// used to record bytes of currently transfered data
//
WordCount = 0;
while (WordCount < ByteCount / 2) {
//
// Poll DRQ bit set, data transfer can be performed only when DRQ is ready.
//
Status = DRQReady2 (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
Status = CheckErrorStatus (IdeDev);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Get the byte count for one series of read
//
if ((WordCount + Increment) > ByteCount / 2) {
Increment = ByteCount / 2 - WordCount;
}
IDEReadPortWMultiple (
IdeDev->PciIo,
IdeDev->IoPort->Data,
Increment,
Buffer16
);
WordCount += Increment;
Buffer16 += Increment;
}
return CheckErrorStatus (IdeDev);
}
/**
This function is used to send out ATA commands conforms to the
PIO Data Out Protocol, supporting ATA/ATAPI-6 standard
Comparing with ATA-3 data out protocol, we have two differents here:<BR>
1. Do NOT wait for DRQ clear before sending command into IDE device.(the
wait will frequently fail... cause writing function return error)
2. Do NOT wait for DRQ clear after all data readed.(the wait greatly
slow down writing performance by 100 times!)
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *Buffer buffer contained data transferred from host to device.
@param[in] ByteCount data size in byte unit of the buffer.
@param[in] AtaCommand value of the Command Register
@param[in] StartLba the start LBA of this transaction
@param[in] SectorCount the count of sectors to be transfered
@retval EFI_SUCCESS send out the ATA command and device receive required
data successfully.
@retval EFI_DEVICE_ERROR command sent failed.
**/
EFI_STATUS
AtaPioDataOutExt (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *Buffer,
IN UINT32 ByteCount,
IN UINT8 AtaCommand,
IN EFI_LBA StartLba,
IN UINT16 SectorCount
)
{
UINT8 DevSel;
UINT8 SectorCount8;
UINT8 LbaLow;
UINT8 LbaMid;
UINT8 LbaHigh;
UINTN WordCount;
UINTN Increment;
UINT16 *Buffer16;
EFI_STATUS Status;
Status = WaitForBSYClear (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Select device. Set bit6 as 1 to indicate LBA mode is used
//
DevSel = (UINT8) (IdeDev->Device << 4);
DevSel |= 0x40;
IDEWritePortB (
IdeDev->PciIo,
IdeDev->IoPort->Head,
DevSel
);
//
// Wait for DRDY singnal asserting.
//
Status = DRDYReady (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Fill feature register if needed
//
if (AtaCommand == ATA_CMD_SET_FEATURES) {
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg1.Feature, 0x03);
}
//
// 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 (StartLba, 24);
LbaMid = (UINT8) RShiftU64 (StartLba, 32);
LbaHigh = (UINT8) RShiftU64 (StartLba, 40);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, LbaLow);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, LbaMid);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, LbaHigh);
LbaLow = (UINT8) StartLba;
LbaMid = (UINT8) RShiftU64 (StartLba, 8);
LbaHigh = (UINT8) RShiftU64 (StartLba, 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, invoking the processing of this command
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, AtaCommand);
Buffer16 = (UINT16 *) Buffer;
//
// According to PIO Data Out protocol, host can perform a series of writes to
// the data register after each time device set DRQ ready;
//
Increment = 256;
//
// used to record bytes of currently transfered data
//
WordCount = 0;
while (WordCount < ByteCount / 2) {
//
// Poll DRQ bit set, data transfer can be performed only when DRQ is ready.
//
Status = DRQReady2 (IdeDev, ATATIMEOUT);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
Status = CheckErrorStatus (IdeDev);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Write data into device by one series of writing to data register
//
if ((WordCount + Increment) > ByteCount / 2) {
Increment = ByteCount / 2 - WordCount;
}
IDEWritePortWMultiple (
IdeDev->PciIo,
IdeDev->IoPort->Data,
Increment,
Buffer16
);
WordCount += Increment;
Buffer16 += Increment;
}
//
// while
//
return CheckErrorStatus (IdeDev);
}
/**
Enable SMART of the disk if supported
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure,used
to record all the information of the IDE device.
**/
VOID
AtaSMARTSupport (
IN IDE_BLK_IO_DEV *IdeDev
)
{
EFI_STATUS Status;
BOOLEAN SMARTSupported;
UINT8 Device;
EFI_IDENTIFY_DATA *TmpAtaIdentifyPointer;
UINT8 DeviceSelect;
UINT8 LBAMid;
UINT8 LBAHigh;
//
// Detect if the device supports S.M.A.R.T.
//
if ((IdeDev->pIdData->AtaData.command_set_supported_83 & 0xc000) != 0x4000) {
//
// Data in word 82 is not valid (bit15 shall be zero and bit14 shall be to one)
//
return ;
} else {
if ((IdeDev->pIdData->AtaData.command_set_supported_82 & 0x0001) != 0x0001) {
//
// S.M.A.R.T is not supported by the device
//
SMARTSupported = FALSE;
} else {
SMARTSupported = TRUE;
}
}
if (!SMARTSupported) {
//
// Report nonsupport status code
//
REPORT_STATUS_CODE (
EFI_ERROR_CODE | EFI_ERROR_MINOR,
(EFI_IO_BUS_ATA_ATAPI | EFI_IOB_ATA_BUS_SMART_NOTSUPPORTED)
);
} else {
//
// Enable this feature
//
REPORT_STATUS_CODE (
EFI_PROGRESS_CODE,
(EFI_IO_BUS_ATA_ATAPI | EFI_IOB_ATA_BUS_SMART_ENABLE)
);
Device = (UINT8) ((IdeDev->Device << 4) | 0xe0);
Status = AtaNonDataCommandIn (
IdeDev,
ATA_CMD_SMART,
Device,
ATA_SMART_ENABLE_OPERATION,
0,
0,
ATA_CONSTANT_4F,
ATA_CONSTANT_C2
);
//
// Detect if this feature is enabled
//
TmpAtaIdentifyPointer = (EFI_IDENTIFY_DATA *) AllocateZeroPool (sizeof (EFI_IDENTIFY_DATA));
DeviceSelect = (UINT8) ((IdeDev->Device) << 4);
Status = AtaPioDataIn (
IdeDev,
(VOID *) TmpAtaIdentifyPointer,
sizeof (EFI_IDENTIFY_DATA),
ATA_CMD_IDENTIFY_DRIVE,
DeviceSelect,
0,
0,
0,
0
);
if (EFI_ERROR (Status)) {
gBS->FreePool (TmpAtaIdentifyPointer);
return ;
}
//
// Check if the feature is enabled
//
if ((TmpAtaIdentifyPointer->AtaData.command_set_feature_enb_85 & 0x0001) == 0x0001) {
//
// Read status data
//
AtaNonDataCommandIn (
IdeDev,
ATA_CMD_SMART,
Device,
ATA_SMART_RETURN_STATUS,
0,
0,
ATA_CONSTANT_4F,
ATA_CONSTANT_C2
);
LBAMid = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb);
LBAHigh = IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb);
if ((LBAMid == 0x4f) && (LBAHigh == 0xc2)) {
//
// The threshold exceeded condition is not detected by the device
//
REPORT_STATUS_CODE (
EFI_PROGRESS_CODE,
(EFI_IO_BUS_ATA_ATAPI | EFI_IOB_ATA_BUS_SMART_UNDERTHRESHOLD)
);
} else if ((LBAMid == 0xf4) && (LBAHigh == 0x2c)) {
//
// The threshold exceeded condition is detected by the device
//
REPORT_STATUS_CODE (
EFI_PROGRESS_CODE,
(EFI_IO_BUS_ATA_ATAPI | EFI_IOB_ATA_BUS_SMART_OVERTHRESHOLD)
);
}
} else {
//
// Report disabled status code
//
REPORT_STATUS_CODE (
EFI_ERROR_CODE | EFI_ERROR_MINOR,
(EFI_IO_BUS_ATA_ATAPI | EFI_IOB_ATA_BUS_SMART_DISABLED)
);
}
gBS->FreePool (TmpAtaIdentifyPointer);
}
return ;
}
/**
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_DEVICE_ERROR Error executing commands on this device
**/
EFI_STATUS
AtaCommandIssueExt (
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 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);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, LbaLow);
LbaLow = (UINT8) LbaAddress;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, LbaLow);
LbaMid = (UINT8) RShiftU64 (LbaAddress, 32);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, LbaMid);
LbaMid = (UINT8) RShiftU64 (LbaAddress, 8);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, LbaMid);
LbaHigh = (UINT8) RShiftU64 (LbaAddress, 40);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, LbaHigh);
LbaHigh = (UINT8) RShiftU64 (LbaAddress, 16);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, LbaHigh);
//
// Work around for Segate 160G disk writing
//
gBS->Stall (1800);
//
// Send command via Command Register
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, AtaCommand);
//
// Stall at least 400ns
//
gBS->Stall (100);
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_DEVICE_ERROR Error executing commands on this device
**/
EFI_STATUS
AtaCommandIssue (
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 SectorCount8;
UINT8 Feature8;
UINT8 Lba0;
UINT8 Lba1;
UINT8 Lba2;
UINT8 Lba3;
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;
}
Lba0 = (UINT8) LbaAddress;
Lba1 = (UINT8) RShiftU64 (LbaAddress, 8);
Lba2 = (UINT8) RShiftU64 (LbaAddress, 16);
Lba3 = (UINT8) RShiftU64 (LbaAddress, 24);
Device = (UINT8) (Device | Lba3);
//
// 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;
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;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorCount, SectorCount8);
//
// Fill the start LBA registers, which are also two-byte FIFO
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->SectorNumber, Lba0);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderLsb, Lba1);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->CylinderMsb, Lba2);
//
// Send command via Command Register
//
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Reg.Command, AtaCommand);
//
// Stall at least 400ns
//
gBS->Stall (100);
return EFI_SUCCESS;
}
/**
This function is called by the AtaBlkIoReadBlocks() to perform
reading from media in block unit. The function has been enhanced to
support >120GB access and transfer at most 65536 blocks per command
@param[in] *IdeDev pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *DataBuffer A pointer to the destination buffer for the data.
@param[in] StartLba The starting logical block address to read from
on the device media.
@param[in] NumberOfBlocks The number of transfer data blocks.
@return The device status of UDMA operation. If the operation is
successful, return EFI_SUCCESS.
TODO: EFI_UNSUPPORTED - add return value 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_DEVICE_ERROR - add return value to function comment
**/
EFI_STATUS
AtaUdmaReadExt (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *DataBuffer,
IN EFI_LBA StartLba,
IN UINTN NumberOfBlocks
)
{
return DoAtaUdma (IdeDev, DataBuffer, StartLba, NumberOfBlocks, AtaUdmaReadExtOp);
}
/**
This function is called by the AtaBlkIoReadBlocks() to perform
reading from media in block unit. The function has been enhanced to
support >120GB access and transfer at most 65536 blocks per command
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *DataBuffer A pointer to the destination buffer for the data.
@param[in] StartLba The starting logical block address to read from
on the device media.
@param[in] NumberOfBlocks The number of transfer data blocks.
@return The device status of UDMA operation. If the operation is
successful, return EFI_SUCCESS.
TODO: EFI_UNSUPPORTED - add return value 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_DEVICE_ERROR - add return value to function comment
**/
EFI_STATUS
AtaUdmaRead (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *DataBuffer,
IN EFI_LBA StartLba,
IN UINTN NumberOfBlocks
)
{
return DoAtaUdma (IdeDev, DataBuffer, StartLba, NumberOfBlocks, AtaUdmaReadOp);
}
/**
This function is called by the AtaBlkIoWriteBlocks() to perform
writing to media in block unit. The function has been enhanced to
support >120GB access and transfer at most 65536 blocks per command
@param[in] *IdeDev pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *DataBuffer A pointer to the source buffer for the data.
@param[in] StartLba The starting logical block address to write to
on the device media.
@param[in] NumberOfBlocks The number of transfer data blocks.
@return The device status of UDMA operation. If the operation is
successful, return EFI_SUCCESS.
TODO: EFI_UNSUPPORTED - add return value to function comment
TODO: EFI_DEVICE_ERROR - add return value to function comment
TODO: EFI_DEVICE_ERROR - add return value to function comment
**/
EFI_STATUS
AtaUdmaWriteExt (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *DataBuffer,
IN EFI_LBA StartLba,
IN UINTN NumberOfBlocks
)
{
return DoAtaUdma (IdeDev, DataBuffer, StartLba, NumberOfBlocks, AtaUdmaWriteExtOp);
}
/**
This function is called by the AtaBlkIoWriteBlocks() to perform
writing to media in block unit. The function has been enhanced to
support >120GB access and transfer at most 65536 blocks per command
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *DataBuffer
A pointer to the source buffer for the data.
@param[in] StartLba
The starting logical block address to write to
on the device media.
@param[in] NumberOfBlocks
The number of transfer data blocks.
@return The device status of UDMA operation. If the operation is
successful, return EFI_SUCCESS.
TODO: EFI_UNSUPPORTED - add return value to function comment
TODO: EFI_DEVICE_ERROR - add return value to function comment
TODO: EFI_DEVICE_ERROR - add return value to function comment
**/
EFI_STATUS
AtaUdmaWrite (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *DataBuffer,
IN EFI_LBA StartLba,
IN UINTN NumberOfBlocks
)
{
return DoAtaUdma (IdeDev, DataBuffer, StartLba, NumberOfBlocks, AtaUdmaWriteOp);
}
/**
Perform an ATA Udma operation (Read, ReadExt, Write, WriteExt).
@param[in] *IdeDev
pointer pointing to IDE_BLK_IO_DEV data structure, used
to record all the information of the IDE device.
@param[in] *DataBuffer
A pointer to the source buffer for the data.
@param[in] StartLba
The starting logical block address to write to
on the device media.
@param[in] NumberOfBlocks
The number of transfer data blocks.
@param[in] UdmaOp
The perform operations could be AtaUdmaReadOp, AtaUdmaReadExOp,
AtaUdmaWriteOp, AtaUdmaWriteExOp
@return The device status of UDMA operation. If the operation is
successful, return EFI_SUCCESS.
**/
EFI_STATUS
DoAtaUdma (
IN IDE_BLK_IO_DEV *IdeDev,
IN VOID *DataBuffer,
IN EFI_LBA StartLba,
IN UINTN NumberOfBlocks,
IN ATA_UDMA_OPERATION UdmaOp
)
{
IDE_DMA_PRD *PrdAddr;
IDE_DMA_PRD *UsedPrdAddr;
IDE_DMA_PRD *TempPrdAddr;
UINT8 RegisterValue;
UINT8 Device;
UINT64 IoPortForBmic;
UINT64 IoPortForBmis;
UINT64 IoPortForBmid;
EFI_STATUS Status;
UINTN PrdTableNum;
UINTN ByteCount;
UINTN ByteAvailable;
UINT8 *PrdBuffer;
UINTN RemainBlockNum;
UINT8 DeviceControl;
UINT32 Count;
UINTN PageCount;
VOID *Map;
VOID *MemPage;
EFI_PHYSICAL_ADDRESS DeviceAddress;
UINTN MaxDmaCommandSectors;
EFI_PCI_IO_PROTOCOL_OPERATION PciIoProtocolOp;
UINT8 AtaCommand;
switch (UdmaOp) {
case AtaUdmaReadOp:
MaxDmaCommandSectors = ATAPI_MAX_DMA_CMD_SECTORS;
PciIoProtocolOp = EfiPciIoOperationBusMasterWrite;
AtaCommand = ATA_CMD_READ_DMA;
break;
case AtaUdmaReadExtOp:
MaxDmaCommandSectors = ATAPI_MAX_DMA_EXT_CMD_SECTORS;
PciIoProtocolOp = EfiPciIoOperationBusMasterWrite;
AtaCommand = ATA_CMD_READ_DMA_EXT;
break;
case AtaUdmaWriteOp:
MaxDmaCommandSectors = ATAPI_MAX_DMA_CMD_SECTORS;
PciIoProtocolOp = EfiPciIoOperationBusMasterRead;
AtaCommand = ATA_CMD_WRITE_DMA;
break;
case AtaUdmaWriteExtOp:
MaxDmaCommandSectors = ATAPI_MAX_DMA_EXT_CMD_SECTORS;
PciIoProtocolOp = EfiPciIoOperationBusMasterRead;
AtaCommand = ATA_CMD_WRITE_DMA_EXT;
break;
default:
return EFI_UNSUPPORTED;
break;
}
//
// Select device
//
Device = (UINT8) ((IdeDev->Device << 4) | 0xe0);
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Head, Device);
//
// Enable interrupt to support UDMA
//
DeviceControl = 0;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Alt.DeviceControl, DeviceControl);
if (IdePrimary == IdeDev->Channel) {
IoPortForBmic = IdeDev->IoPort->BusMasterBaseAddr + BMICP_OFFSET;
IoPortForBmis = IdeDev->IoPort->BusMasterBaseAddr + BMISP_OFFSET;
IoPortForBmid = IdeDev->IoPort->BusMasterBaseAddr + BMIDP_OFFSET;
} else {
if (IdeSecondary == IdeDev->Channel) {
IoPortForBmic = IdeDev->IoPort->BusMasterBaseAddr + BMICS_OFFSET;
IoPortForBmis = IdeDev->IoPort->BusMasterBaseAddr + BMISS_OFFSET;
IoPortForBmid = IdeDev->IoPort->BusMasterBaseAddr + BMIDS_OFFSET;
} else {
return EFI_UNSUPPORTED;
}
}
//
// 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
);
Status = EFI_SUCCESS;
RemainBlockNum = NumberOfBlocks;
while (RemainBlockNum > 0) {
if (RemainBlockNum >= MaxDmaCommandSectors) {
//
// SectorCount is used to record the number of sectors to be read
// Max 65536 sectors can be transfered at a time.
//
NumberOfBlocks = MaxDmaCommandSectors;
RemainBlockNum -= MaxDmaCommandSectors;
} else {
NumberOfBlocks = (UINT16) RemainBlockNum;
RemainBlockNum = 0;
}
//
// Calculate the number of PRD table to make sure the memory region
// not cross 64K boundary
//
ByteCount = NumberOfBlocks * IdeDev->BlkIo.Media->BlockSize;
PrdTableNum = ((ByteCount >> 16) + 1) + 1;
//
// Build PRD table
//
PageCount = EFI_SIZE_TO_PAGES (2 * PrdTableNum * sizeof (IDE_DMA_PRD));
Status = IdeDev->PciIo->AllocateBuffer (
IdeDev->PciIo,
AllocateAnyPages,
EfiBootServicesData,
PageCount,
&MemPage,
0
);
if (EFI_ERROR (Status)) {
return EFI_OUT_OF_RESOURCES;
}
ZeroMem ((VOID *) ((UINTN) MemPage), EFI_PAGES_TO_SIZE (PageCount));
PrdAddr = (IDE_DMA_PRD *) ((UINTN) MemPage);
//
// To make sure PRD is allocated in one 64K page
//
if (((UINTN) PrdAddr & 0x0FFFF) > (((UINTN) PrdAddr + PrdTableNum * sizeof (IDE_DMA_PRD) - 1) & 0x0FFFF)) {
UsedPrdAddr = (IDE_DMA_PRD *) ((UINTN) ((UINT8 *) PrdAddr + 0x10000) & 0xFFFF0000);
} else {
if ((UINTN) PrdAddr & 0x03) {
UsedPrdAddr = (IDE_DMA_PRD *) ((UINTN) ((UINT8 *) PrdAddr + 0x04) & 0xFFFFFFFC);
} else {
UsedPrdAddr = PrdAddr;
}
}
//
// Build the PRD table
//
Status = IdeDev->PciIo->Map (
IdeDev->PciIo,
PciIoProtocolOp,
DataBuffer,
&ByteCount,
&DeviceAddress,
&Map
);
if (EFI_ERROR (Status)) {
IdeDev->PciIo->FreeBuffer (IdeDev->PciIo, PageCount, MemPage);
return EFI_OUT_OF_RESOURCES;
}
PrdBuffer = (VOID *) ((UINTN) DeviceAddress);
TempPrdAddr = UsedPrdAddr;
while (TRUE) {
ByteAvailable = 0x10000 - ((UINTN) PrdBuffer & 0xFFFF);
if (ByteCount <= ByteAvailable) {
TempPrdAddr->RegionBaseAddr = (UINT32) ((UINTN) PrdBuffer);
TempPrdAddr->ByteCount = (UINT16) ByteCount;
TempPrdAddr->EndOfTable = 0x8000;
break;
}
TempPrdAddr->RegionBaseAddr = (UINT32) ((UINTN) PrdBuffer);
TempPrdAddr->ByteCount = (UINT16) ByteAvailable;
ByteCount -= ByteAvailable;
PrdBuffer += ByteAvailable;
TempPrdAddr++;
}
//
// Set the base address to BMID register
//
IdeDev->PciIo->Io.Write (
IdeDev->PciIo,
EfiPciIoWidthUint32,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmid,
1,
&UsedPrdAddr
);
//
// Set BMIC register to identify the operation direction
//
IdeDev->PciIo->Io.Read (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmic,
1,
&RegisterValue
);
if (UdmaOp == AtaUdmaReadExtOp || UdmaOp == AtaUdmaReadOp) {
RegisterValue |= BMIC_nREAD;
} else {
RegisterValue &= ~((UINT8) BMIC_nREAD);
}
IdeDev->PciIo->Io.Write (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmic,
1,
&RegisterValue
);
if (UdmaOp == AtaUdmaWriteExtOp || UdmaOp == AtaUdmaReadExtOp) {
Status = AtaCommandIssueExt (
IdeDev,
AtaCommand,
Device,
0,
(UINT16) NumberOfBlocks,
StartLba
);
} else {
Status = AtaCommandIssue (
IdeDev,
AtaCommand,
Device,
0,
(UINT16) NumberOfBlocks,
StartLba
);
}
if (EFI_ERROR (Status)) {
IdeDev->PciIo->FreeBuffer (IdeDev->PciIo, PageCount, MemPage);
IdeDev->PciIo->Unmap (IdeDev->PciIo, Map);
return EFI_DEVICE_ERROR;
}
//
// Set START bit of BMIC register
//
IdeDev->PciIo->Io.Read (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmic,
1,
&RegisterValue
);
RegisterValue |= BMIC_START;
IdeDev->PciIo->Io.Write (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmic,
1,
&RegisterValue
);
//
// Check the INTERRUPT and ERROR bit of BMIS
// Max transfer number of sectors for one command is 65536(32Mbyte),
// it will cost 1 second to transfer these data in UDMA mode 2(33.3MBps).
// So set the variable Count to 2000, for about 2 second timeout time.
//
Status = EFI_SUCCESS;
Count = 2000;
while (TRUE) {
IdeDev->PciIo->Io.Read (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmis,
1,
&RegisterValue
);
if ((RegisterValue & (BMIS_INTERRUPT | BMIS_ERROR)) || (Count == 0)) {
if ((RegisterValue & BMIS_ERROR) || (Count == 0)) {
Status = EFI_DEVICE_ERROR;
break;
}
break;
}
gBS->Stall (1000);
Count --;
}
IdeDev->PciIo->FreeBuffer (IdeDev->PciIo, PageCount, MemPage);
IdeDev->PciIo->Unmap (IdeDev->PciIo, Map);
//
// 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
);
//
// Read Status Register of IDE device to clear interrupt
//
RegisterValue = IDEReadPortB(IdeDev->PciIo,IdeDev->IoPort->Reg.Status);
//
// Clear START bit of BMIC register
//
IdeDev->PciIo->Io.Read (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmic,
1,
&RegisterValue
);
RegisterValue &= ~((UINT8) BMIC_START);
IdeDev->PciIo->Io.Write (
IdeDev->PciIo,
EfiPciIoWidthUint8,
EFI_PCI_IO_PASS_THROUGH_BAR,
IoPortForBmic,
1,
&RegisterValue
);
if (RegisterValue & BMIS_ERROR) {
return EFI_DEVICE_ERROR;
}
if (EFI_ERROR (Status)) {
break;
}
DataBuffer = (UINT8 *) DataBuffer + NumberOfBlocks * IdeDev->BlkIo.Media->BlockSize;
StartLba += NumberOfBlocks;
}
//
// Disable interrupt of Select device
//
IDEReadPortB (IdeDev->PciIo, IdeDev->IoPort->Alt.DeviceControl);
DeviceControl |= ATA_CTLREG_IEN_L;
IDEWritePortB (IdeDev->PciIo, IdeDev->IoPort->Alt.DeviceControl, DeviceControl);
return Status;
}
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