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

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/** @file
Copyright (c) 2007, 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:
UsbMassBot.c
Abstract:
Implementation of the USB mass storage Bulk-Only Transport protocol.
Revision History
**/
#include "UsbMass.h"
#include "UsbMassBot.h"
UINTN mUsbBotInfo = DEBUG_INFO;
UINTN mUsbBotError = DEBUG_ERROR;
STATIC
EFI_STATUS
UsbBotResetDevice (
IN VOID *Context,
IN BOOLEAN ExtendedVerification
);
/**
Initialize the USB mass storage class BOT transport protocol.
It will save its context which is a USB_BOT_PROTOCOL structure
in the Context if Context isn't NULL.
@param UsbIo The USB IO protocol to use
@param Controller The controller to init
@param Context The variable to save the context to
@retval EFI_OUT_OF_RESOURCES Failed to allocate memory
@retval EFI_UNSUPPORTED The transport protocol doesn't support the device.
@retval EFI_SUCCESS The device is supported and protocol initialized.
**/
STATIC
EFI_STATUS
UsbBotInit (
IN EFI_USB_IO_PROTOCOL * UsbIo,
IN EFI_HANDLE Controller,
OUT VOID **Context OPTIONAL
)
{
USB_BOT_PROTOCOL *UsbBot;
EFI_USB_INTERFACE_DESCRIPTOR *Interface;
EFI_USB_ENDPOINT_DESCRIPTOR EndPoint;
EFI_STATUS Status;
UINT8 Index;
//
// Allocate the BOT context, append two endpoint descriptors to it
//
UsbBot = AllocateZeroPool (
sizeof (USB_BOT_PROTOCOL) + 2 * sizeof (EFI_USB_ENDPOINT_DESCRIPTOR)
);
if (UsbBot == NULL) {
return EFI_OUT_OF_RESOURCES;
}
UsbBot->UsbIo = UsbIo;
//
// Get the interface descriptor and validate that it
// is a USB MSC BOT interface.
//
Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &UsbBot->Interface);
if (EFI_ERROR (Status)) {
DEBUG ((mUsbBotError, "UsbBotInit: Get invalid BOT interface (%r)\n", Status));
goto ON_ERROR;
}
Interface = &UsbBot->Interface;
if (Interface->InterfaceProtocol != USB_MASS_STORE_BOT) {
Status = EFI_UNSUPPORTED;
goto ON_ERROR;
}
//
// Locate and save the first bulk-in and bulk-out endpoint
//
for (Index = 0; Index < Interface->NumEndpoints; Index++) {
Status = UsbIo->UsbGetEndpointDescriptor (UsbIo, Index, &EndPoint);
if (EFI_ERROR (Status) || !USB_IS_BULK_ENDPOINT (EndPoint.Attributes)) {
continue;
}
if (USB_IS_IN_ENDPOINT (EndPoint.EndpointAddress) &&
(UsbBot->BulkInEndpoint == NULL)) {
UsbBot->BulkInEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbBot + 1);
CopyMem(UsbBot->BulkInEndpoint, &EndPoint, sizeof (EndPoint));
}
if (USB_IS_OUT_ENDPOINT (EndPoint.EndpointAddress) &&
(UsbBot->BulkOutEndpoint == NULL)) {
UsbBot->BulkOutEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbBot + 1) + 1;
CopyMem(UsbBot->BulkOutEndpoint, &EndPoint, sizeof(EndPoint));
}
}
if ((UsbBot->BulkInEndpoint == NULL) || (UsbBot->BulkOutEndpoint == NULL)) {
DEBUG ((mUsbBotError, "UsbBotInit: In/Out Endpoint invalid\n"));
Status = EFI_UNSUPPORTED;
goto ON_ERROR;
}
//
// The USB BOT protocol uses dCBWTag to match the CBW and CSW.
//
UsbBot->CbwTag = 0x01;
if (Context != NULL) {
*Context = UsbBot;
} else {
gBS->FreePool (UsbBot);
}
return EFI_SUCCESS;
ON_ERROR:
gBS->FreePool (UsbBot);
return Status;
}
/**
Send the command to the device using Bulk-Out endpoint
@param UsbBot The USB BOT device
@param Cmd The command to transfer to device
@param CmdLen the length of the command
@param DataDir The direction of the data
@param TransLen The expected length of the data
@retval EFI_NOT_READY The device return NAK to the transfer
@retval EFI_SUCCESS The command is sent to the device.
@retval Others Failed to send the command to device
**/
STATIC
EFI_STATUS
UsbBotSendCommand (
IN USB_BOT_PROTOCOL *UsbBot,
IN UINT8 *Cmd,
IN UINT8 CmdLen,
IN EFI_USB_DATA_DIRECTION DataDir,
IN UINT32 TransLen
)
{
USB_BOT_CBW Cbw;
EFI_STATUS Status;
UINT32 Result;
UINTN DataLen;
UINTN Timeout;
ASSERT ((CmdLen > 0) && (CmdLen <= USB_BOT_MAX_CMDLEN));
//
// Fill in the CSW. Only the first LUN is supported now.
//
Cbw.Signature = USB_BOT_CBW_SIGNATURE;
Cbw.Tag = UsbBot->CbwTag;
Cbw.DataLen = TransLen;
Cbw.Flag = (UINT8) ((DataDir == EfiUsbDataIn) ? 0x80 : 0);
Cbw.Lun = 0;
Cbw.CmdLen = CmdLen;
ZeroMem (Cbw.CmdBlock, USB_BOT_MAX_CMDLEN);
CopyMem (Cbw.CmdBlock, Cmd, CmdLen);
Result = 0;
DataLen = sizeof (USB_BOT_CBW);
Timeout = USB_BOT_CBW_TIMEOUT / USB_MASS_STALL_1_MS;
//
// Use the UsbIo to send the command to the device. The default
// time out is enough.
//
Status = UsbBot->UsbIo->UsbBulkTransfer (
UsbBot->UsbIo,
UsbBot->BulkOutEndpoint->EndpointAddress,
&Cbw,
&DataLen,
Timeout,
&Result
);
//
// Respond to Bulk-Out endpoint stall with a Reset Recovery,
// see the spec section 5.3.1
//
if (EFI_ERROR (Status)) {
if (USB_IS_ERROR (Result, EFI_USB_ERR_STALL) && DataDir == EfiUsbDataOut) {
UsbBotResetDevice (UsbBot, FALSE);
} else if (USB_IS_ERROR (Result, EFI_USB_ERR_NAK)) {
Status = EFI_NOT_READY;
}
}
return Status;
}
/**
Transfer the data between the device and host. BOT transfer
is composed of three phase, command, data, and status.
@param UsbBot The USB BOT device
@param DataDir The direction of the data
@param Data The buffer to hold data
@param TransLen The expected length of the data
@param Timeout The time to wait the command to complete
@retval EFI_SUCCESS The data is transferred
@retval Others Failed to transfer data
**/
STATIC
EFI_STATUS
UsbBotDataTransfer (
IN USB_BOT_PROTOCOL *UsbBot,
IN EFI_USB_DATA_DIRECTION DataDir,
IN OUT UINT8 *Data,
IN OUT UINTN *TransLen,
IN UINT32 Timeout
)
{
EFI_USB_ENDPOINT_DESCRIPTOR *Endpoint;
EFI_STATUS Status;
UINT32 Result;
//
// It's OK if no data to transfer
//
if ((DataDir == EfiUsbNoData) || (*TransLen == 0)) {
return EFI_SUCCESS;
}
//
// Select the endpoint then issue the transfer
//
if (DataDir == EfiUsbDataIn) {
Endpoint = UsbBot->BulkInEndpoint;
} else {
Endpoint = UsbBot->BulkOutEndpoint;
}
Result = 0;
Timeout = Timeout / USB_MASS_STALL_1_MS;
Status = UsbBot->UsbIo->UsbBulkTransfer (
UsbBot->UsbIo,
Endpoint->EndpointAddress,
Data,
TransLen,
Timeout,
&Result
);
if (EFI_ERROR (Status)) {
DEBUG ((mUsbBotError, "UsbBotDataTransfer: (%r)\n", Status));
if (USB_IS_ERROR (Result, EFI_USB_ERR_STALL)) {
DEBUG ((mUsbBotError, "UsbBotDataTransfer: DataIn Stall\n"));
UsbClearEndpointStall (UsbBot->UsbIo, Endpoint->EndpointAddress);
} else if (USB_IS_ERROR (Result, EFI_USB_ERR_NAK)) {
Status = EFI_NOT_READY;
}
}
return Status;
}
/**
Get the command execution status from device. BOT transfer is
composed of three phase, command, data, and status.
This function return the transfer status of the BOT's CSW status,
and return the high level command execution result in Result. So
even it returns EFI_SUCCESS, the command may still have failed.
@param UsbBot The USB BOT device
@param TransLen The expected length of the data
@param Timeout The time to wait the command to complete
@param CmdStatus The result of the command execution.
@retval EFI_DEVICE_ERROR Failed to retrieve the command execute result
@retval EFI_SUCCESS Command execute result is retrieved and in the
Result.
**/
STATIC
EFI_STATUS
UsbBotGetStatus (
IN USB_BOT_PROTOCOL *UsbBot,
IN UINT32 TransLen,
OUT UINT8 *CmdStatus
)
{
USB_BOT_CSW Csw;
UINTN Len;
UINT8 Endpoint;
EFI_STATUS Status;
UINT32 Result;
EFI_USB_IO_PROTOCOL *UsbIo;
UINT32 Index;
UINTN Timeout;
*CmdStatus = USB_BOT_COMMAND_ERROR;
Status = EFI_DEVICE_ERROR;
Endpoint = UsbBot->BulkInEndpoint->EndpointAddress;
UsbIo = UsbBot->UsbIo;
Timeout = USB_BOT_CSW_TIMEOUT / USB_MASS_STALL_1_MS;
for (Index = 0; Index < USB_BOT_GET_STATUS_RETRY; Index++) {
//
// Attemp to the read CSW from bulk in endpoint
//
ZeroMem (&Csw, sizeof (USB_BOT_CSW));
Result = 0;
Len = sizeof (USB_BOT_CSW);
Status = UsbIo->UsbBulkTransfer (
UsbIo,
Endpoint,
&Csw,
&Len,
Timeout,
&Result
);
if (EFI_ERROR(Status)) {
DEBUG ((mUsbBotError, "UsbBotGetStatus (%r)\n", Status));
if (USB_IS_ERROR (Result, EFI_USB_ERR_STALL)) {
DEBUG ((mUsbBotError, "UsbBotGetStatus: DataIn Stall\n"));
UsbClearEndpointStall (UsbIo, Endpoint);
}
continue;
}
if (Csw.Signature != USB_BOT_CSW_SIGNATURE) {
//
// Invalid Csw need perform reset recovery
//
DEBUG ((mUsbBotError, "UsbBotGetStatus: Device return a invalid signature\n"));
Status = UsbBotResetDevice (UsbBot, FALSE);
} else if (Csw.CmdStatus == USB_BOT_COMMAND_ERROR) {
//
// Respond phase error need perform reset recovery
//
DEBUG ((mUsbBotError, "UsbBotGetStatus: Device return a phase error\n"));
Status = UsbBotResetDevice (UsbBot, FALSE);
} else {
*CmdStatus = Csw.CmdStatus;
break;
}
}
//
//The tag is increased even there is an error.
//
UsbBot->CbwTag++;
return Status;
}
/**
Call the Usb mass storage class transport protocol to issue
the command/data/status circle to execute the commands
@param Context The context of the BOT protocol, that is,
USB_BOT_PROTOCOL
@param Cmd The high level command
@param CmdLen The command length
@param DataDir The direction of the data transfer
@param Data The buffer to hold data
@param DataLen The length of the data
@param Timeout The time to wait command
@param CmdStatus The result of high level command execution
@retval EFI_DEVICE_ERROR Failed to excute command
@retval EFI_SUCCESS The command is executed OK, and result in CmdStatus
**/
STATIC
EFI_STATUS
UsbBotExecCommand (
IN VOID *Context,
IN VOID *Cmd,
IN UINT8 CmdLen,
IN EFI_USB_DATA_DIRECTION DataDir,
IN VOID *Data,
IN UINT32 DataLen,
IN UINT32 Timeout,
OUT UINT32 *CmdStatus
)
{
USB_BOT_PROTOCOL *UsbBot;
EFI_STATUS Status;
UINTN TransLen;
UINT8 Result;
*CmdStatus = USB_MASS_CMD_FAIL;
UsbBot = (USB_BOT_PROTOCOL *) Context;
//
// Send the command to the device. Return immediately if device
// rejects the command.
//
Status = UsbBotSendCommand (UsbBot, Cmd, CmdLen, DataDir, DataLen);
if (EFI_ERROR (Status)) {
DEBUG ((mUsbBotError, "UsbBotExecCommand: UsbBotSendCommand (%r)\n", Status));
return Status;
}
//
// Transfer the data. Don't return immediately even data transfer
// failed. The host should attempt to receive the CSW no matter
// whether it succeeds or failed.
//
TransLen = (UINTN) DataLen;
UsbBotDataTransfer (UsbBot, DataDir, Data, &TransLen, Timeout);
//
// Get the status, if that succeeds, interpret the result
//
Status = UsbBotGetStatus (UsbBot, DataLen, &Result);
if (EFI_ERROR (Status)) {
DEBUG ((mUsbBotError, "UsbBotExecCommand: UsbBotGetStatus (%r)\n", Status));
return Status;
}
if (Result == 0) {
*CmdStatus = USB_MASS_CMD_SUCCESS;
}
return EFI_SUCCESS;
}
/**
Reset the mass storage device by BOT protocol
@param Context The context of the BOT protocol, that is,
USB_BOT_PROTOCOL
@retval EFI_SUCCESS The device is reset
@retval Others Failed to reset the device.
**/
STATIC
EFI_STATUS
UsbBotResetDevice (
IN VOID *Context,
IN BOOLEAN ExtendedVerification
)
{
USB_BOT_PROTOCOL *UsbBot;
EFI_USB_DEVICE_REQUEST Request;
EFI_STATUS Status;
UINT32 Result;
UINT32 Timeout;
UsbBot = (USB_BOT_PROTOCOL *) Context;
if (ExtendedVerification) {
//
// If we need to do strictly reset, reset its parent hub port
//
Status = UsbBot->UsbIo->UsbPortReset (UsbBot->UsbIo);
if (EFI_ERROR (Status)) {
return Status;
}
}
//
// Issue a class specific "Bulk-Only Mass Storage Reset reqest.
// See the spec section 3.1
//
Request.RequestType = 0x21;
Request.Request = USB_BOT_RESET_REQUEST;
Request.Value = 0;
Request.Index = UsbBot->Interface.InterfaceNumber;
Request.Length = 0;
Timeout = USB_BOT_RESET_TIMEOUT / USB_MASS_STALL_1_MS;
Status = UsbBot->UsbIo->UsbControlTransfer (
UsbBot->UsbIo,
&Request,
EfiUsbNoData,
Timeout,
NULL,
0,
&Result
);
if (EFI_ERROR (Status)) {
DEBUG ((mUsbBotError, "UsbBotResetDevice: (%r)\n", Status));
return Status;
}
//
// The device shall NAK the host's request until the reset is
// complete. We can use this to sync the device and host. For
// now just stall 100ms to wait the device.
//
gBS->Stall (USB_BOT_RESET_STALL);
//
// Clear the Bulk-In and Bulk-Out stall condition.
//
UsbClearEndpointStall (UsbBot->UsbIo, UsbBot->BulkInEndpoint->EndpointAddress);
UsbClearEndpointStall (UsbBot->UsbIo, UsbBot->BulkOutEndpoint->EndpointAddress);
return Status;
}
/**
Clean up the resource used by this BOT protocol
@param Context The context of the BOT protocol, that is,
USB_BOT_PROTOCOL
@retval EFI_SUCCESS The resource is cleaned up.
**/
STATIC
EFI_STATUS
UsbBotFini (
IN VOID *Context
)
{
gBS->FreePool (Context);
return EFI_SUCCESS;
}
USB_MASS_TRANSPORT
mUsbBotTransport = {
USB_MASS_STORE_BOT,
UsbBotInit,
UsbBotExecCommand,
UsbBotResetDevice,
UsbBotFini
};
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