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audk/MdeModulePkg/Bus/Usb/UsbMassStorageDxe/UsbMassBoot.c

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/** @file
Copyright (c) 2007 - 2008, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
UsbMassBoot.c
Abstract:
This file implement the command set of "USB Mass Storage Specification
for Bootability".
Revision History
**/
#include "UsbMassImpl.h"
EFI_TPL
UsbGetCurrentTpl (
VOID
)
/*++
Routine Description:
return the current TPL, copied from the EDKII glue lib.
Arguments:
VOID
Returns:
Current TPL
--*/
{
EFI_TPL Tpl;
Tpl = gBS->RaiseTPL (TPL_HIGH_LEVEL);
gBS->RestoreTPL (Tpl);
return Tpl;
}
/**
Read an UINT32 from the buffer to avoid byte alignment problems, then
convert that to the little endia. The USB mass storage bootability spec
use big endia
@param Buf The buffer contains the first byte of the UINT32
in big endia.
@return The UINT32 value read from the buffer in little endia.
**/
STATIC
UINT32
UsbBootGetUint32 (
IN UINT8 *Buf
)
{
UINT32 Value;
CopyMem (&Value, Buf, sizeof (UINT32));
return USB_BOOT_SWAP32 (Value);
}
/**
Put an UINT32 in little endia to the buffer. The data is converted to
big endia before writing.
@param Buf The buffer to write data to
@param Data32 The data to write.
@return None
**/
STATIC
VOID
UsbBootPutUint32 (
IN UINT8 *Buf,
IN UINT32 Data32
)
{
Data32 = USB_BOOT_SWAP32 (Data32);
CopyMem (Buf, &Data32, sizeof (UINT32));
}
/**
Put an UINT16 in little endia to the buffer. The data is converted to
big endia before writing.
@param Buf The buffer to write data to
@param Data16 The data to write
@return None
**/
STATIC
VOID
UsbBootPutUint16 (
IN UINT8 *Buf,
IN UINT16 Data16
)
{
Data16 = (UINT16) (USB_BOOT_SWAP16 (Data16));
CopyMem (Buf, &Data16, sizeof (UINT16));
}
/**
Request sense information via sending Request Sense
Packet Command.
@param UsbMass The device to be requested sense data
@retval EFI_DEVICE_ERROR Hardware error
@retval EFI_SUCCESS Success
**/
EFI_STATUS
UsbBootRequestSense (
IN USB_MASS_DEVICE *UsbMass
)
{
USB_BOOT_REQUEST_SENSE_CMD SenseCmd;
USB_BOOT_REQUEST_SENSE_DATA SenseData;
EFI_BLOCK_IO_MEDIA *Media;
USB_MASS_TRANSPORT *Transport;
EFI_STATUS Status;
UINT32 CmdResult;
Transport = UsbMass->Transport;
//
// Request the sense data from the device if command failed
//
ZeroMem (&SenseCmd, sizeof (USB_BOOT_REQUEST_SENSE_CMD));
ZeroMem (&SenseData, sizeof (USB_BOOT_REQUEST_SENSE_DATA));
SenseCmd.OpCode = USB_BOOT_REQUEST_SENSE_OPCODE;
SenseCmd.Lun = (UINT8) (USB_BOOT_LUN (UsbMass->Lun));
SenseCmd.AllocLen = sizeof (USB_BOOT_REQUEST_SENSE_DATA);
Status = Transport->ExecCommand (
UsbMass->Context,
&SenseCmd,
sizeof (USB_BOOT_REQUEST_SENSE_CMD),
EfiUsbDataIn,
&SenseData,
sizeof (USB_BOOT_REQUEST_SENSE_DATA),
UsbMass->Lun,
USB_BOOT_GENERAL_CMD_TIMEOUT,
&CmdResult
);
if (EFI_ERROR (Status) || CmdResult != USB_MASS_CMD_SUCCESS) {
DEBUG ((EFI_D_ERROR, "UsbBootRequestSense: (%r) CmdResult=0x%x\n", Status, CmdResult));
return Status;
}
//
// Interpret the sense data and update the media status if necessary.
//
Media = &UsbMass->BlockIoMedia;
switch (USB_BOOT_SENSE_KEY (SenseData.SenseKey)) {
case USB_BOOT_SENSE_NO_SENSE:
Status = EFI_NO_RESPONSE;
break;
case USB_BOOT_SENSE_RECOVERED:
//
// Suppose hardware can handle this case, and recover later by itself
//
Status = EFI_NOT_READY;
break;
case USB_BOOT_SENSE_NOT_READY:
Status = EFI_DEVICE_ERROR;
if (SenseData.ASC == USB_BOOT_ASC_NO_MEDIA) {
Media->MediaPresent = FALSE;
Status = EFI_NO_MEDIA;
} else if (SenseData.ASC == USB_BOOT_ASC_NOT_READY) {
Status = EFI_NOT_READY;
}
break;
case USB_BOOT_SENSE_ILLEGAL_REQUEST:
Status = EFI_INVALID_PARAMETER;
break;
case USB_BOOT_SENSE_UNIT_ATTENTION:
Status = EFI_DEVICE_ERROR;
if (SenseData.ASC == USB_BOOT_ASC_MEDIA_CHANGE) {
//
// If MediaChange, reset ReadOnly and new MediId
//
Status = EFI_MEDIA_CHANGED;
Media->ReadOnly = FALSE;
Media->MediaId++;
}
break;
case USB_BOOT_SNESE_DATA_PROTECT:
Status = EFI_WRITE_PROTECTED;
Media->ReadOnly = TRUE;
break;
default:
Status = EFI_DEVICE_ERROR;
break;
}
DEBUG ((EFI_D_INFO, "UsbBootRequestSense: (%r) with sense key %x/%x/%x\n",
Status,
USB_BOOT_SENSE_KEY (SenseData.SenseKey),
SenseData.ASC,
SenseData.ASCQ
));
return Status;
}
/**
Execute the USB mass storage bootability commands. If execution
failed, retrieve the error by REQUEST_SENSE then update the device's
status, such as ReadyOnly.
@param UsbMass The device to issue commands to
@param Cmd The command to execute
@param CmdLen The length of the command
@param DataDir The direction of data transfer
@param Data The buffer to hold the data
@param DataLen The length of expected data
@param Timeout The timeout used to transfer
@retval EFI_SUCCESS The command is excuted OK
@retval EFI_DEVICE_ERROR Failed to request sense
@retval EFI_INVALID_PARAMETER The command has some invalid parameters
@retval EFI_WRITE_PROTECTED The device is write protected
@retval EFI_MEDIA_CHANGED The device media has been changed
**/
STATIC
EFI_STATUS
UsbBootExecCmd (
IN USB_MASS_DEVICE *UsbMass,
IN VOID *Cmd,
IN UINT8 CmdLen,
IN EFI_USB_DATA_DIRECTION DataDir,
IN VOID *Data,
IN UINT32 DataLen,
IN UINT32 Timeout
)
{
USB_MASS_TRANSPORT *Transport;
EFI_STATUS Status;
UINT32 CmdResult;
Transport = UsbMass->Transport;
Status = Transport->ExecCommand (
UsbMass->Context,
Cmd,
CmdLen,
DataDir,
Data,
DataLen,
UsbMass->Lun,
Timeout,
&CmdResult
);
//
// ExecCommand return success and get the right CmdResult means
// the commnad transfer is OK.
//
if ((CmdResult == USB_MASS_CMD_SUCCESS) && !EFI_ERROR(Status)) {
return EFI_SUCCESS;
}
DEBUG ((EFI_D_INFO, "UsbBootExecCmd: Fail to Exec 0x%x Cmd /w %r\n",
*(UINT8 *)Cmd ,Status));
return UsbBootRequestSense (UsbMass);
}
/**
Execute the USB mass storage bootability commands. If execution
failed, retrieve the error by REQUEST_SENSE then update the device's
status, such as ReadyOnly.
@param UsbMass The device to issue commands to
@param Cmd The command to execute
@param CmdLen The length of the command
@param DataDir The direction of data transfer
@param Data The buffer to hold the data
@param DataLen The length of expected data
@retval EFI_SUCCESS The command is excuted OK
@retval EFI_DEVICE_ERROR Failed to request sense
@retval EFI_INVALID_PARAMETER The command has some invalid parameters
@retval EFI_WRITE_PROTECTED The device is write protected
@retval EFI_MEDIA_CHANGED The device media has been changed
**/
STATIC
EFI_STATUS
UsbBootExecCmdWithRetry (
IN USB_MASS_DEVICE *UsbMass,
IN VOID *Cmd,
IN UINT8 CmdLen,
IN EFI_USB_DATA_DIRECTION DataDir,
IN VOID *Data,
IN UINT32 DataLen,
IN UINT32 Timeout
)
{
EFI_STATUS Status;
INT16 Index;
//
// If the device isn't ready, wait some time. If the device is ready,
// retry the command again.
//
Status = EFI_SUCCESS;
for (Index = 0; Index < USB_BOOT_COMMAND_RETRY; Index++) {
//
// Execute the command with an increasingly larger timeout value.
//
Status = UsbBootExecCmd (
UsbMass,
Cmd,
CmdLen,
DataDir,
Data,
DataLen,
Timeout
);
if (Status == EFI_SUCCESS ||
Status == EFI_MEDIA_CHANGED) {
break;
}
//
// Need retry once more, so reset index
//
if (Status == EFI_NOT_READY) {
Index = 0;
}
}
return Status;
}
/**
Use the TEST UNIT READY command to check whether it is ready.
If it is ready, update the parameters.
@param UsbMass The device to test
@retval EFI_SUCCESS The device is ready and parameters are updated.
@retval Others Device not ready.
**/
EFI_STATUS
UsbBootIsUnitReady (
IN USB_MASS_DEVICE *UsbMass
)
{
USB_BOOT_TEST_UNIT_READY_CMD TestCmd;
ZeroMem (&TestCmd, sizeof (USB_BOOT_TEST_UNIT_READY_CMD));
TestCmd.OpCode = USB_BOOT_TEST_UNIT_READY_OPCODE;
TestCmd.Lun = (UINT8) (USB_BOOT_LUN (UsbMass->Lun));
return UsbBootExecCmdWithRetry (
UsbMass,
&TestCmd,
sizeof (USB_BOOT_TEST_UNIT_READY_CMD),
EfiUsbNoData,
NULL,
0,
USB_BOOT_GENERAL_CMD_TIMEOUT
);
}
/**
Inquiry Command requests that information regrarding parameters of
the Device be sent to the Host.
@param UsbMass The device to inquiry.
@retval EFI_SUCCESS The device is ready and parameters are updated.
@retval Others Device not ready.
**/
EFI_STATUS
UsbBootInquiry (
IN USB_MASS_DEVICE *UsbMass
)
{
USB_BOOT_INQUIRY_CMD InquiryCmd;
USB_BOOT_INQUIRY_DATA InquiryData;
EFI_BLOCK_IO_MEDIA *Media;
EFI_STATUS Status;
Media = &(UsbMass->BlockIoMedia);
//
// Use the Inquiry command to get the RemovableMedia setting.
//
ZeroMem (&InquiryCmd, sizeof (USB_BOOT_INQUIRY_CMD));
ZeroMem (&InquiryData, sizeof (USB_BOOT_INQUIRY_DATA));
InquiryCmd.OpCode = USB_BOOT_INQUIRY_OPCODE;
InquiryCmd.Lun = (UINT8) (USB_BOOT_LUN (UsbMass->Lun));
InquiryCmd.AllocLen = sizeof (InquiryData);
Status = UsbBootExecCmdWithRetry (
UsbMass,
&InquiryCmd,
sizeof (USB_BOOT_INQUIRY_CMD),
EfiUsbDataIn,
&InquiryData,
sizeof (USB_BOOT_INQUIRY_DATA),
USB_BOOT_GENERAL_CMD_TIMEOUT
);
if (EFI_ERROR (Status)) {
return Status;
}
UsbMass->Pdt = (UINT8) (USB_BOOT_PDT (InquiryData.Pdt));
Media->RemovableMedia = (BOOLEAN) (USB_BOOT_REMOVABLE (InquiryData.Removable));
//
// Default value 512 Bytes, in case no media present at first time
//
Media->BlockSize = 0x0200;
return Status;
}
/**
Get the capacity of the USB mass storage media, including
the presentation, block size, and last block number. This
function is used to get the disk parameters at the start if
it is a non-removable media or to detect the media if it is
removable.
@param UsbMass The device to retireve disk gemotric.
@retval EFI_SUCCESS The disk gemotric is successfully retrieved.
@retval EFI_DEVICE_ERROR Something is inconsistent with the disk gemotric.
**/
EFI_STATUS
UsbBootReadCapacity (
IN USB_MASS_DEVICE *UsbMass
)
{
USB_BOOT_READ_CAPACITY_CMD CapacityCmd;
USB_BOOT_READ_CAPACITY_DATA CapacityData;
EFI_BLOCK_IO_MEDIA *Media;
EFI_STATUS Status;
Media = &UsbMass->BlockIoMedia;
//
// Use the READ CAPACITY command to get the block length and last blockno
//
ZeroMem (&CapacityCmd, sizeof (USB_BOOT_READ_CAPACITY_CMD));
ZeroMem (&CapacityData, sizeof (USB_BOOT_READ_CAPACITY_DATA));
CapacityCmd.OpCode = USB_BOOT_READ_CAPACITY_OPCODE;
CapacityCmd.Lun = (UINT8) (USB_BOOT_LUN (UsbMass->Lun));
Status = UsbBootExecCmdWithRetry (
UsbMass,
&CapacityCmd,
sizeof (USB_BOOT_READ_CAPACITY_CMD),
EfiUsbDataIn,
&CapacityData,
sizeof (USB_BOOT_READ_CAPACITY_DATA),
USB_BOOT_GENERAL_CMD_TIMEOUT
);
if (EFI_ERROR (Status)) {
return Status;
}
Media->MediaPresent = TRUE;
Media->LastBlock = UsbBootGetUint32 (CapacityData.LastLba);
Media->BlockSize = UsbBootGetUint32 (CapacityData.BlockLen);
if (Media->BlockSize == 0) {
return EFI_NOT_READY;
}
DEBUG ((EFI_D_INFO, "UsbBootReadCapacity Success LBA=%ld BlockSize=%d\n",
Media->LastBlock, Media->BlockSize));
return EFI_SUCCESS;
}
/**
Retrieves mode sense information via sending Mode Sense
Packet Command.
@param UsbMass The USB_FLOPPY_DEV instance.
@retval EFI_DEVICE_ERROR Hardware error
@retval EFI_SUCCESS Success
**/
EFI_STATUS
UsbScsiModeSense (
IN USB_MASS_DEVICE *UsbMass
)
{
EFI_STATUS Status;
USB_SCSI_MODE_SENSE6_CMD ModeSenseCmd;
USB_SCSI_MODE_SENSE6_PARA_HEADER ModeParaHeader;
EFI_BLOCK_IO_MEDIA *Media;
Media = &UsbMass->BlockIoMedia;
ZeroMem (&ModeSenseCmd, sizeof (USB_SCSI_MODE_SENSE6_CMD));
ZeroMem (&ModeParaHeader, sizeof (USB_SCSI_MODE_SENSE6_PARA_HEADER));
//
// ModeSense6 command is defined in [SCSI2Spec-Page151]
//
ModeSenseCmd.OpCode = USB_SCSI_MODE_SENSE6_OPCODE;
ModeSenseCmd.Lun = (UINT8) USB_BOOT_LUN (UsbMass->Lun);
ModeSenseCmd.PageCode = 0x3F;
ModeSenseCmd.AllocateLen = (UINT8) sizeof (USB_SCSI_MODE_SENSE6_PARA_HEADER);
Status = UsbBootExecCmdWithRetry (
UsbMass,
&ModeSenseCmd,
sizeof (USB_SCSI_MODE_SENSE6_CMD),
EfiUsbDataIn,
&ModeParaHeader,
sizeof (USB_SCSI_MODE_SENSE6_PARA_HEADER),
USB_BOOT_GENERAL_CMD_TIMEOUT
);
//
// ModeSense(6) is used to get the information of WriteProtected. While only some of
// devices support this command, so have a try here.
//
if (!EFI_ERROR (Status)) {
Media->ReadOnly = (BOOLEAN) ((ModeParaHeader.DevicePara & 0x80) ? TRUE : FALSE);
}
return Status;
}
/**
Get the parameters for the USB mass storage media, including
the RemovableMedia, block size, and last block number. This
function is used both to initialize the media during the
DriverBindingStart and to re-initialize it when the media is
changed. Althought the RemoveableMedia is unlikely to change,
I include it here.
@param UsbMass The device to retireve disk gemotric.
@retval EFI_SUCCESS The disk gemotric is successfully retrieved.
@retval EFI_DEVICE_ERROR Something is inconsistent with the disk gemotric.
**/
EFI_STATUS
UsbBootGetParams (
IN USB_MASS_DEVICE *UsbMass
)
{
EFI_BLOCK_IO_MEDIA *Media;
EFI_STATUS Status;
UINT8 CmdSet;
Media = &(UsbMass->BlockIoMedia);
CmdSet = ((EFI_USB_INTERFACE_DESCRIPTOR *) (UsbMass->Context))->InterfaceSubClass;
Status = UsbBootInquiry (UsbMass);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "UsbBootGetParams: UsbBootInquiry (%r)\n", Status));
return Status;
}
//
// Don't use the Removable bit in inquirydata to test whether the media
// is removable because many flash disks wrongly set this bit.
//
if ((UsbMass->Pdt == USB_PDT_CDROM) || (UsbMass->Pdt == USB_PDT_OPTICAL)) {
//
// CD-Rom device and Non-CD optical device
//
UsbMass->OpticalStorage = TRUE;
//
// Default value 2048 Bytes, in case no media present at first time
//
Media->BlockSize = 0x0800;
}
if ((UsbMass->Pdt != USB_PDT_CDROM) && (CmdSet == USB_MASS_STORE_SCSI)) {
//
// ModeSense is required for the device with PDT of 0x00/0x07/0x0E,
// which is from [MassStorageBootabilitySpec-Page7].
// ModeSense(10) is useless here, while ModeSense(6) defined in SCSI
// could get the information of WriteProtected.
// Since not all device support this command, so skip if fail.
//
UsbScsiModeSense (UsbMass);
}
return UsbBootReadCapacity (UsbMass);
}
/**
Detect whether the removable media is present and whether it has changed.
The Non-removable media doesn't need it.
@param UsbMass The device to retireve disk gemotric.
@retval EFI_SUCCESS The disk gemotric is successfully retrieved.
@retval EFI_DEVICE_ERROR Something is inconsistent with the disk gemotric.
**/
EFI_STATUS
UsbBootDetectMedia (
IN USB_MASS_DEVICE *UsbMass
)
{
EFI_BLOCK_IO_MEDIA OldMedia;
EFI_BLOCK_IO_MEDIA *Media;
UINT8 CmdSet;
EFI_TPL OldTpl;
EFI_STATUS Status;
Media = &UsbMass->BlockIoMedia;
CopyMem (
&OldMedia,
&(UsbMass->BlockIoMedia),
sizeof (EFI_BLOCK_IO_MEDIA)
);
CmdSet = ((EFI_USB_INTERFACE_DESCRIPTOR *) (UsbMass->Context))->InterfaceSubClass;
Status = UsbBootIsUnitReady (UsbMass);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "UsbBootDetectMedia: UsbBootIsUnitReady (%r)\n", Status));
goto ON_ERROR;
}
if ((UsbMass->Pdt != USB_PDT_CDROM) && (CmdSet == USB_MASS_STORE_SCSI)) {
//
// ModeSense is required for the device with PDT of 0x00/0x07/0x0E,
// which is from [MassStorageBootabilitySpec-Page7].
// ModeSense(10) is useless here, while ModeSense(6) defined in SCSI
// could get the information of WriteProtected.
// Since not all device support this command, so skip if fail.
//
UsbScsiModeSense (UsbMass);
}
Status = UsbBootReadCapacity (UsbMass);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "UsbBootDetectMedia: UsbBootReadCapacity (%r)\n", Status));
goto ON_ERROR;
}
return EFI_SUCCESS;
ON_ERROR:
//
// Detect whether it is necessary to reinstall the BlockIO
//
// MediaId may change in RequestSense for MediaChanged
// MediaPresent may change in RequestSense for NoMedia
// MediaReadOnly may change in RequestSense for WriteProtected or MediaChanged
// MediaPresent/BlockSize/LastBlock may change in ReadCapacity
//
if ((Media->MediaId != OldMedia.MediaId) ||
(Media->MediaPresent != OldMedia.MediaPresent) ||
(Media->ReadOnly != OldMedia.ReadOnly) ||
(Media->BlockSize != OldMedia.BlockSize) ||
(Media->LastBlock != OldMedia.LastBlock)) {
OldTpl = UsbGetCurrentTpl ();
DEBUG ((EFI_D_ERROR, "UsbBootDetectMedia: TPL before reinstall BlockIoProtocol is %d\n", OldTpl));
gBS->RestoreTPL (TPL_CALLBACK);
gBS->ReinstallProtocolInterface (
UsbMass->Controller,
&gEfiBlockIoProtocolGuid,
&UsbMass->BlockIo,
&UsbMass->BlockIo
);
DEBUG ((EFI_D_ERROR, "UsbBootDetectMedia: TPL after reinstall is %d\n", UsbGetCurrentTpl()));
ASSERT (UsbGetCurrentTpl () == TPL_CALLBACK);
gBS->RaiseTPL (OldTpl);
//
// Update MediaId after reinstall BLOCK_IO_PROTOCOL
//
if (Media->MediaPresent != OldMedia.MediaPresent) {
if (Media->MediaPresent == TRUE) {
Media->MediaId = 1;
} else {
Media->MediaId = 0;
}
}
if ((Media->ReadOnly != OldMedia.ReadOnly) ||
(Media->BlockSize != OldMedia.BlockSize) ||
(Media->LastBlock != OldMedia.LastBlock)) {
Media->MediaId++;
}
}
return Status;
}
/**
Read some blocks from the device.
@param UsbMass The USB mass storage device to read from
@param Lba The start block number
@param TotalBlock Total block number to read
@param Buffer The buffer to read to
@retval EFI_SUCCESS Data are read into the buffer
@retval Others Failed to read all the data
**/
EFI_STATUS
UsbBootReadBlocks (
IN USB_MASS_DEVICE *UsbMass,
IN UINT32 Lba,
IN UINTN TotalBlock,
OUT UINT8 *Buffer
)
{
USB_BOOT_READ10_CMD ReadCmd;
EFI_STATUS Status;
UINT16 Count;
UINT32 BlockSize;
UINT32 ByteSize;
UINT32 Timeout;
BlockSize = UsbMass->BlockIoMedia.BlockSize;
Status = EFI_SUCCESS;
while (TotalBlock > 0) {
//
// Split the total blocks into smaller pieces to ease the pressure
// on the device. We must split the total block because the READ10
// command only has 16 bit transfer length (in the unit of block).
//
Count = (UINT16)((TotalBlock < USB_BOOT_IO_BLOCKS) ? TotalBlock : USB_BOOT_IO_BLOCKS);
ByteSize = (UINT32)Count * BlockSize;
//
// USB command's upper limit timeout is 5s. [USB2.0-9.2.6.1]
//
Timeout = (UINT32) USB_BOOT_GENERAL_CMD_TIMEOUT;
//
// Fill in the command then execute
//
ZeroMem (&ReadCmd, sizeof (USB_BOOT_READ10_CMD));
ReadCmd.OpCode = USB_BOOT_READ10_OPCODE;
ReadCmd.Lun = (UINT8) (USB_BOOT_LUN (UsbMass->Lun));
UsbBootPutUint32 (ReadCmd.Lba, Lba);
UsbBootPutUint16 (ReadCmd.TransferLen, Count);
Status = UsbBootExecCmdWithRetry (
UsbMass,
&ReadCmd,
sizeof (USB_BOOT_READ10_CMD),
EfiUsbDataIn,
Buffer,
ByteSize,
Timeout
);
if (EFI_ERROR (Status)) {
return Status;
}
Lba += Count;
Buffer += Count * BlockSize;
TotalBlock -= Count;
}
return Status;
}
/**
Write some blocks to the device.
@param UsbMass The USB mass storage device to write to
@param Lba The start block number
@param TotalBlock Total block number to write
@param Buffer The buffer to write to
@retval EFI_SUCCESS Data are written into the buffer
@retval Others Failed to write all the data
**/
EFI_STATUS
UsbBootWriteBlocks (
IN USB_MASS_DEVICE *UsbMass,
IN UINT32 Lba,
IN UINTN TotalBlock,
OUT UINT8 *Buffer
)
{
USB_BOOT_WRITE10_CMD WriteCmd;
EFI_STATUS Status;
UINT16 Count;
UINT32 BlockSize;
UINT32 ByteSize;
UINT32 Timeout;
BlockSize = UsbMass->BlockIoMedia.BlockSize;
Status = EFI_SUCCESS;
while (TotalBlock > 0) {
//
// Split the total blocks into smaller pieces to ease the pressure
// on the device. We must split the total block because the WRITE10
// command only has 16 bit transfer length (in the unit of block).
//
Count = (UINT16)((TotalBlock < USB_BOOT_IO_BLOCKS) ? TotalBlock : USB_BOOT_IO_BLOCKS);
ByteSize = (UINT32)Count * BlockSize;
//
// USB command's upper limit timeout is 5s. [USB2.0-9.2.6.1]
//
Timeout = (UINT32) USB_BOOT_GENERAL_CMD_TIMEOUT;
//
// Fill in the write10 command block
//
ZeroMem (&WriteCmd, sizeof (USB_BOOT_WRITE10_CMD));
WriteCmd.OpCode = USB_BOOT_WRITE10_OPCODE;
WriteCmd.Lun = (UINT8) (USB_BOOT_LUN (UsbMass->Lun));
UsbBootPutUint32 (WriteCmd.Lba, Lba);
UsbBootPutUint16 (WriteCmd.TransferLen, Count);
Status = UsbBootExecCmdWithRetry (
UsbMass,
&WriteCmd,
sizeof (USB_BOOT_WRITE10_CMD),
EfiUsbDataOut,
Buffer,
ByteSize,
Timeout
);
if (EFI_ERROR (Status)) {
return Status;
}
Lba += Count;
Buffer += Count * BlockSize;
TotalBlock -= Count;
}
return Status;
}
/**
Use the USB clear feature control transfer to clear the endpoint
stall condition.
@param UsbIo The USB IO protocol to use
@param EndpointAddr The endpoint to clear stall for
@retval EFI_SUCCESS The endpoint stall condtion is clear
@retval Others Failed to clear the endpoint stall condtion
**/
EFI_STATUS
UsbClearEndpointStall (
IN EFI_USB_IO_PROTOCOL *UsbIo,
IN UINT8 EndpointAddr
)
{
EFI_USB_DEVICE_REQUEST Request;
EFI_STATUS Status;
UINT32 CmdResult;
UINT32 Timeout;
Request.RequestType = 0x02;
Request.Request = USB_REQ_CLEAR_FEATURE;
Request.Value = USB_FEATURE_ENDPOINT_HALT;
Request.Index = EndpointAddr;
Request.Length = 0;
Timeout = USB_BOOT_GENERAL_CMD_TIMEOUT / USB_MASS_1_MILLISECOND;
Status = UsbIo->UsbControlTransfer (
UsbIo,
&Request,
EfiUsbNoData,
Timeout,
NULL,
0,
&CmdResult
);
return Status;
}
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