/** @file
Implementation of the USB mass storage Control/Bulk/Interrupt transport,
according to USB Mass Storage Class Control/Bulk/Interrupt (CBI) Transport, Revision 1.1.
Notice: it is being obsoleted by the standard body in favor of the BOT
(Bulk-Only Transport).
Copyright (c) 2007 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "UsbMass.h"
//
// Definition of USB CBI0 Transport Protocol
//
USB_MASS_TRANSPORT mUsbCbi0Transport = {
USB_MASS_STORE_CBI0,
UsbCbiInit,
UsbCbiExecCommand,
UsbCbiResetDevice,
NULL,
UsbCbiCleanUp
};
//
// Definition of USB CBI1 Transport Protocol
//
USB_MASS_TRANSPORT mUsbCbi1Transport = {
USB_MASS_STORE_CBI1,
UsbCbiInit,
UsbCbiExecCommand,
UsbCbiResetDevice,
NULL,
UsbCbiCleanUp
};
/**
Initializes USB CBI protocol.
This function initializes the USB mass storage class CBI protocol.
It will save its context which is a USB_CBI_PROTOCOL structure
in the Context if Context isn't NULL.
@param UsbIo The USB I/O Protocol instance
@param Context The buffer to save the context to
@retval EFI_SUCCESS The device is successfully initialized.
@retval EFI_UNSUPPORTED The transport protocol doesn't support the device.
@retval Other The USB CBI initialization fails.
**/
EFI_STATUS
UsbCbiInit (
IN EFI_USB_IO_PROTOCOL *UsbIo,
OUT VOID **Context OPTIONAL
)
{
USB_CBI_PROTOCOL *UsbCbi;
EFI_USB_INTERFACE_DESCRIPTOR *Interface;
EFI_USB_ENDPOINT_DESCRIPTOR EndPoint;
EFI_STATUS Status;
UINT8 Index;
//
// Allocate the CBI context for USB_CBI_PROTOCOL and 3 endpoint descriptors.
//
UsbCbi = AllocateZeroPool (
sizeof (USB_CBI_PROTOCOL) + 3 * sizeof (EFI_USB_ENDPOINT_DESCRIPTOR)
);
ASSERT (UsbCbi != NULL);
UsbCbi->UsbIo = UsbIo;
//
// Get the interface descriptor and validate that it
// is a USB Mass Storage CBI interface.
//
Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &UsbCbi->Interface);
if (EFI_ERROR (Status)) {
goto ON_ERROR;
}
Interface = &UsbCbi->Interface;
if ((Interface->InterfaceProtocol != USB_MASS_STORE_CBI0)
&& (Interface->InterfaceProtocol != USB_MASS_STORE_CBI1)) {
Status = EFI_UNSUPPORTED;
goto ON_ERROR;
}
//
// Locate and save the bulk-in, bulk-out, and interrupt endpoint
//
for (Index = 0; Index < Interface->NumEndpoints; Index++) {
Status = UsbIo->UsbGetEndpointDescriptor (UsbIo, Index, &EndPoint);
if (EFI_ERROR (Status)) {
continue;
}
if (USB_IS_BULK_ENDPOINT (EndPoint.Attributes)) {
//
// Use the first Bulk-In and Bulk-Out endpoints
//
if (USB_IS_IN_ENDPOINT (EndPoint.EndpointAddress) &&
(UsbCbi->BulkInEndpoint == NULL)) {
UsbCbi->BulkInEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbCbi + 1);
CopyMem(UsbCbi->BulkInEndpoint, &EndPoint, sizeof (EndPoint));;
}
if (USB_IS_OUT_ENDPOINT (EndPoint.EndpointAddress) &&
(UsbCbi->BulkOutEndpoint == NULL)) {
UsbCbi->BulkOutEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbCbi + 1) + 1;
CopyMem(UsbCbi->BulkOutEndpoint, &EndPoint, sizeof (EndPoint));
}
} else if (USB_IS_INTERRUPT_ENDPOINT (EndPoint.Attributes)) {
//
// Use the first interrupt endpoint if it is CBI0
//
if ((Interface->InterfaceProtocol == USB_MASS_STORE_CBI0) &&
(UsbCbi->InterruptEndpoint == NULL)) {
UsbCbi->InterruptEndpoint = (EFI_USB_ENDPOINT_DESCRIPTOR *) (UsbCbi + 1) + 2;
CopyMem(UsbCbi->InterruptEndpoint, &EndPoint, sizeof (EndPoint));
}
}
}
if ((UsbCbi->BulkInEndpoint == NULL) || (UsbCbi->BulkOutEndpoint == NULL)) {
Status = EFI_UNSUPPORTED;
goto ON_ERROR;
}
if ((Interface->InterfaceProtocol == USB_MASS_STORE_CBI0) && (UsbCbi->InterruptEndpoint == NULL)) {
Status = EFI_UNSUPPORTED;
goto ON_ERROR;
}
if (Context != NULL) {
*Context = UsbCbi;
} else {
FreePool (UsbCbi);
}
return EFI_SUCCESS;
ON_ERROR:
FreePool (UsbCbi);
return Status;
}
/**
Send the command to the device using class specific control transfer.
This function sends command to the device using class specific control transfer.
The CBI contains three phases: Command, Data, and Status. This is Command phase.
@param UsbCbi The USB CBI protocol
@param Cmd The high level command to transfer to device
@param CmdLen The length of the command
@param Timeout The time to wait the command to finish
@retval EFI_SUCCESS The command is sent to the device.
@retval Others The command failed to transfer to device
**/
EFI_STATUS
UsbCbiSendCommand (
IN USB_CBI_PROTOCOL *UsbCbi,
IN UINT8 *Cmd,
IN UINT8 CmdLen,
IN UINT32 Timeout
)
{
EFI_USB_DEVICE_REQUEST Request;
EFI_STATUS Status;
UINT32 TransStatus;
UINTN DataLen;
INTN Retry;
//
// Fill in the device request, CBI use the "Accept Device-Specific
// Cmd" (ADSC) class specific request to send commands.
//
Request.RequestType = 0x21;
Request.Request = 0;
Request.Value = 0;
Request.Index = UsbCbi->Interface.InterfaceNumber;
Request.Length = CmdLen;
Status = EFI_SUCCESS;
Timeout = Timeout / USB_MASS_1_MILLISECOND;
for (Retry = 0; Retry < USB_CBI_MAX_RETRY; Retry++) {
//
// Use USB I/O Protocol to send the command to the device
//
TransStatus = 0;
DataLen = CmdLen;
Status = UsbCbi->UsbIo->UsbControlTransfer (
UsbCbi->UsbIo,
&Request,
EfiUsbDataOut,
Timeout,
Cmd,
DataLen,
&TransStatus
);
//
// The device can fail the command by STALL the control endpoint.
// It can delay the command by NAK the data or status stage, this
// is a "class-specific exemption to the USB specification". Retry
// if the command is NAKed.
//
if (EFI_ERROR (Status) && (TransStatus == EFI_USB_ERR_NAK)) {
continue;
}
break;
}
return Status;
}
/**
Transfer data between the device and host.
This function transfers data between the device and host.
The CBI contains three phases: Command, Data, and Status. This is Data phase.
@param UsbCbi The USB CBI device
@param DataDir The direction of the data transfer
@param Data The buffer to hold the data for input or output.
@param TransLen On input, the expected transfer length.
On output, the length of data actually transferred.
@param Timeout The time to wait for the command to execute
@retval EFI_SUCCESS The data transferred successfully.
@retval EFI_SUCCESS No data to transfer
@retval Others Failed to transfer all the data
**/
EFI_STATUS
UsbCbiDataTransfer (
IN USB_CBI_PROTOCOL *UsbCbi,
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 TransStatus;
UINTN Remain;
UINTN Increment;
UINT8 *Next;
UINTN Retry;
//
// If no data to transfer, just return EFI_SUCCESS.
//
if ((DataDir == EfiUsbNoData) || (*TransLen == 0)) {
return EFI_SUCCESS;
}
//
// Select the endpoint then issue the transfer
//
if (DataDir == EfiUsbDataIn) {
Endpoint = UsbCbi->BulkInEndpoint;
} else {
Endpoint = UsbCbi->BulkOutEndpoint;
}
Next = Data;
Remain = *TransLen;
Retry = 0;
Status = EFI_SUCCESS;
Timeout = Timeout / USB_MASS_1_MILLISECOND;
//
// Transfer the data with a loop. The length of data transferred once is restricted.
//
while (Remain > 0) {
TransStatus = 0;
if (Remain > (UINTN) USB_CBI_MAX_PACKET_NUM * Endpoint->MaxPacketSize) {
Increment = USB_CBI_MAX_PACKET_NUM * Endpoint->MaxPacketSize;
} else {
Increment = Remain;
}
Status = UsbCbi->UsbIo->UsbBulkTransfer (
UsbCbi->UsbIo,
Endpoint->EndpointAddress,
Next,
&Increment,
Timeout,
&TransStatus
);
if (EFI_ERROR (Status)) {
if (TransStatus == EFI_USB_ERR_NAK) {
//
// The device can NAK the host if either the data/buffer isn't
// aviable or the command is in-progress.
// If data are partially transferred, we just ignore NAK and continue.
// If all data have been transferred and status is NAK, then we retry for several times.
// If retry exceeds the USB_CBI_MAX_RETRY, then return error status.
//
if (Increment == 0) {
if (++Retry > USB_CBI_MAX_RETRY) {
goto ON_EXIT;
}
} else {
Next += Increment;
Remain -= Increment;
Retry = 0;
}
continue;
}
//
// The device can fail the command by STALL the bulk endpoint.
// Clear the stall if that is the case.
//
if (TransStatus == EFI_USB_ERR_STALL) {
UsbClearEndpointStall (UsbCbi->UsbIo, Endpoint->EndpointAddress);
}
goto ON_EXIT;
}
Next += Increment;
Remain -= Increment;
}
ON_EXIT:
*TransLen -= Remain;
return Status;
}
/**
Gets the result of high level command execution from interrupt endpoint.
This function returns the USB transfer status, and put the high level
command execution result in Result.
The CBI contains three phases: Command, Data, and Status. This is Status phase.
@param UsbCbi The USB CBI protocol
@param Timeout The time to wait for the command to execute
@param Result The result of the command execution.
@retval EFI_SUCCESS The high level command execution result is
retrieved in Result.
@retval Others Failed to retrieve the result.
**/
EFI_STATUS
UsbCbiGetStatus (
IN USB_CBI_PROTOCOL *UsbCbi,
IN UINT32 Timeout,
OUT USB_CBI_STATUS *Result
)
{
UINTN Len;
UINT8 Endpoint;
EFI_STATUS Status;
UINT32 TransStatus;
INTN Retry;
Endpoint = UsbCbi->InterruptEndpoint->EndpointAddress;
Status = EFI_SUCCESS;
Timeout = Timeout / USB_MASS_1_MILLISECOND;
//
// Attemp to the read the result from interrupt endpoint
//
for (Retry = 0; Retry < USB_CBI_MAX_RETRY; Retry++) {
TransStatus = 0;
Len = sizeof (USB_CBI_STATUS);
Status = UsbCbi->UsbIo->UsbSyncInterruptTransfer (
UsbCbi->UsbIo,
Endpoint,
Result,
&Len,
Timeout,
&TransStatus
);
//
// The CBI can NAK the interrupt endpoint if the command is in-progress.
//
if (EFI_ERROR (Status) && (TransStatus == EFI_USB_ERR_NAK)) {
continue;
}
break;
}
return Status;
}
/**
Execute USB mass storage command through the CBI0/CBI1 transport protocol.
@param Context The USB CBI Protocol.
@param Cmd The command to transfer to device
@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 the buffer
@param Lun Should be 0, this field for bot only
@param Timeout The time to wait
@param CmdStatus The result of the command execution
@retval EFI_SUCCESS The command is executed successfully.
@retval Other Failed to execute the command
**/
EFI_STATUS
UsbCbiExecCommand (
IN VOID *Context,
IN VOID *Cmd,
IN UINT8 CmdLen,
IN EFI_USB_DATA_DIRECTION DataDir,
IN VOID *Data,
IN UINT32 DataLen,
IN UINT8 Lun,
IN UINT32 Timeout,
OUT UINT32 *CmdStatus
)
{
USB_CBI_PROTOCOL *UsbCbi;
USB_CBI_STATUS Result;
EFI_STATUS Status;
UINTN TransLen;
*CmdStatus = USB_MASS_CMD_SUCCESS;
UsbCbi = (USB_CBI_PROTOCOL *) Context;
//
// Send the command to the device. Return immediately if device
// rejects the command.
//
Status = UsbCbiSendCommand (UsbCbi, Cmd, CmdLen, Timeout);
if (EFI_ERROR (Status)) {
gBS->Stall(10 * USB_MASS_1_MILLISECOND);
DEBUG ((EFI_D_ERROR, "UsbCbiExecCommand: UsbCbiSendCommand (%r)\n",Status));
return Status;
}
//
// Transfer the data. Return this status if no interrupt endpoint
// is used to report the transfer status.
//
TransLen = (UINTN) DataLen;
Status = UsbCbiDataTransfer (UsbCbi, DataDir, Data, &TransLen, Timeout);
if (UsbCbi->InterruptEndpoint == NULL) {
DEBUG ((EFI_D_ERROR, "UsbCbiExecCommand: UsbCbiDataTransfer (%r)\n",Status));
return Status;
}
//
// Get the status. If it succeeds, interpret the result.
//
Status = UsbCbiGetStatus (UsbCbi, Timeout, &Result);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "UsbCbiExecCommand: UsbCbiGetStatus (%r)\n",Status));
return Status;
}
if (UsbCbi->Interface.InterfaceSubClass == USB_MASS_STORE_UFI) {
//
// For UFI device, ASC and ASCQ are returned.
//
// Do not set the USB_MASS_CMD_FAIL for a request sense command
// as a bad result type doesn't mean a cmd failure
//
if (Result.Type != 0 && *(UINT8*)Cmd != 0x03) {
*CmdStatus = USB_MASS_CMD_FAIL;
}
} else {
//
// Check page 27, CBI spec 1.1 for vaious reture status.
//
switch (Result.Value & 0x03) {
case 0x00:
//
// Pass
//
*CmdStatus = USB_MASS_CMD_SUCCESS;
break;
case 0x02:
//
// Phase Error, response with reset.
// No break here to fall through to "Fail".
//
UsbCbiResetDevice (UsbCbi, FALSE);
case 0x01:
//
// Fail
//
*CmdStatus = USB_MASS_CMD_FAIL;
break;
case 0x03:
//
// Persistent Fail. Need to send REQUEST SENSE.
//
*CmdStatus = USB_MASS_CMD_PERSISTENT;
break;
}
}
return EFI_SUCCESS;
}
/**
Reset the USB mass storage device by CBI protocol.
This function resets the USB mass storage device by CBI protocol.
The reset is defined as a non-data command. Don't use UsbCbiExecCommand
to send the command to device because that may introduce recursive loop.
@param Context The USB CBI protocol
@param ExtendedVerification The flag controlling the rule of reset.
Not used here.
@retval EFI_SUCCESS The device is reset.
@retval Others Failed to reset the device.
**/
EFI_STATUS
UsbCbiResetDevice (
IN VOID *Context,
IN BOOLEAN ExtendedVerification
)
{
UINT8 ResetCmd[USB_CBI_RESET_CMD_LEN];
USB_CBI_PROTOCOL *UsbCbi;
USB_CBI_STATUS Result;
EFI_STATUS Status;
UINT32 Timeout;
UsbCbi = (USB_CBI_PROTOCOL *) Context;
//
// Fill in the reset command.
//
SetMem (ResetCmd, USB_CBI_RESET_CMD_LEN, 0xFF);
ResetCmd[0] = 0x1D;
ResetCmd[1] = 0x04;
Timeout = USB_CBI_RESET_DEVICE_TIMEOUT / USB_MASS_1_MILLISECOND;
//
// Send the command to the device. Don't use UsbCbiExecCommand here.
//
Status = UsbCbiSendCommand (UsbCbi, ResetCmd, USB_CBI_RESET_CMD_LEN, Timeout);
if (EFI_ERROR (Status)) {
return EFI_DEVICE_ERROR;
}
//
// Just retrieve the status and ignore that. Then stall
// 50ms to wait for it to complete.
//
UsbCbiGetStatus (UsbCbi, Timeout, &Result);
gBS->Stall (USB_CBI_RESET_DEVICE_STALL);
//
// Clear the Bulk-In and Bulk-Out stall condition and init data toggle.
//
UsbClearEndpointStall (UsbCbi->UsbIo, UsbCbi->BulkInEndpoint->EndpointAddress);
UsbClearEndpointStall (UsbCbi->UsbIo, UsbCbi->BulkOutEndpoint->EndpointAddress);
return Status;
}
/**
Clean up the CBI protocol's resource.
@param Context The instance of CBI protocol.
@retval EFI_SUCCESS The resource is cleaned up.
**/
EFI_STATUS
UsbCbiCleanUp (
IN VOID *Context
)
{
FreePool (Context);
return EFI_SUCCESS;
}