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audk/EdkModulePkg/Bus/Usb/UsbMassStorage/Dxe/UsbMassStorage.c

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/*++
Copyright (c) 2006, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Module Name:
UsbMassStorage.c
Abstract:
USB Mass Storage Driver
Revision History
--*/
#include "UsbMassStorage.h"
#include "UsbMassStorageHelper.h"
//
// Block I/O Protocol Interface
//
STATIC
EFI_STATUS
EFIAPI
USBFloppyReset (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
);
STATIC
EFI_STATUS
EFIAPI
USBFloppyReadBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
OUT VOID *Buffer
);
STATIC
EFI_STATUS
EFIAPI
USBFloppyWriteBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
IN VOID *Buffer
);
STATIC
EFI_STATUS
EFIAPI
USBFloppyFlushBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This
);
//
// USB Floppy Driver Global Variables
//
EFI_DRIVER_BINDING_PROTOCOL gUSBFloppyDriverBinding = {
USBFloppyDriverBindingSupported,
USBFloppyDriverBindingStart,
USBFloppyDriverBindingStop,
0xa,
NULL,
NULL
};
EFI_STATUS
EFIAPI
USBFloppyDriverBindingSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
/*++
Routine Description:
Test to see if this driver supports ControllerHandle. Any ControllerHandle
that has UsbHcProtocol installed will be supported.
Arguments:
This - Protocol instance pointer.
Controller - Handle of device to test
RemainingDevicePath - Not used
Returns:
EFI_SUCCESS - This driver supports this device.
EFI_UNSUPPORTED - This driver does not support this device.
--*/
{
EFI_STATUS OpenStatus;
EFI_USB_ATAPI_PROTOCOL *AtapiProtocol;
//
// check whether EFI_USB_ATAPI_PROTOCOL exists, if it does,
// then the controller must be a USB Mass Storage Controller
//
OpenStatus = gBS->OpenProtocol (
Controller,
&gEfiUsbAtapiProtocolGuid,
(VOID **) &AtapiProtocol,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (OpenStatus)) {
return OpenStatus;
}
gBS->CloseProtocol (
Controller,
&gEfiUsbAtapiProtocolGuid,
This->DriverBindingHandle,
Controller
);
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
USBFloppyDriverBindingStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
)
/*++
Routine Description:
Starting the Usb Bus Driver
Arguments:
This - Protocol instance pointer.
Controller - Handle of device to test
RemainingDevicePath - Not used
Returns:
EFI_SUCCESS - This driver supports this device.
EFI_UNSUPPORTED - This driver does not support this device.
EFI_DEVICE_ERROR - This driver cannot be started due to device
Error
EFI_OUT_OF_RESOURCES- Can't allocate memory resources
EFI_ALREADY_STARTED - Thios driver has been started
--*/
{
EFI_STATUS Status;
EFI_USB_ATAPI_PROTOCOL *AtapiProtocol;
USB_FLOPPY_DEV *UsbFloppyDevice;
UsbFloppyDevice = NULL;
//
// Check whether Usb Atapi Protocol attached on the controller handle.
//
Status = gBS->OpenProtocol (
Controller,
&gEfiUsbAtapiProtocolGuid,
(VOID **) &AtapiProtocol,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_BY_DRIVER
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = gBS->AllocatePool (
EfiBootServicesData,
sizeof (USB_FLOPPY_DEV),
(VOID **) &UsbFloppyDevice
);
if (EFI_ERROR (Status)) {
gBS->CloseProtocol (
Controller,
&gEfiUsbAtapiProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
ZeroMem (UsbFloppyDevice, sizeof (USB_FLOPPY_DEV));
UsbFloppyDevice->Handle = Controller;
UsbFloppyDevice->BlkIo.Media = &UsbFloppyDevice->BlkMedia;
UsbFloppyDevice->Signature = USB_FLOPPY_DEV_SIGNATURE;
UsbFloppyDevice->BlkIo.Reset = USBFloppyReset;
UsbFloppyDevice->BlkIo.ReadBlocks = USBFloppyReadBlocks;
UsbFloppyDevice->BlkIo.WriteBlocks = USBFloppyWriteBlocks;
UsbFloppyDevice->BlkIo.FlushBlocks = USBFloppyFlushBlocks;
UsbFloppyDevice->AtapiProtocol = AtapiProtocol;
//
// Identify drive type and retrieve media information.
//
Status = USBFloppyIdentify (UsbFloppyDevice);
if (EFI_ERROR (Status)) {
if (UsbFloppyDevice->SenseData != NULL) {
gBS->FreePool (UsbFloppyDevice->SenseData);
}
gBS->FreePool (UsbFloppyDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbAtapiProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
//
// Install Block I/O protocol for the usb floppy device.
//
Status = gBS->InstallProtocolInterface (
&Controller,
&gEfiBlockIoProtocolGuid,
EFI_NATIVE_INTERFACE,
&UsbFloppyDevice->BlkIo
);
if (EFI_ERROR (Status)) {
if (UsbFloppyDevice->SenseData != NULL) {
gBS->FreePool (UsbFloppyDevice->SenseData);
}
gBS->FreePool (UsbFloppyDevice);
gBS->CloseProtocol (
Controller,
&gEfiUsbAtapiProtocolGuid,
This->DriverBindingHandle,
Controller
);
return Status;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
USBFloppyDriverBindingStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
)
/*++
Routine Description:
Stop this driver on ControllerHandle. Support stoping any child handles
created by this driver.
Arguments:
This - Protocol instance pointer.
Controller - Handle of device to stop driver on
NumberOfChildren - Number of Children in the ChildHandleBuffer
ChildHandleBuffer - List of handles for the children we need to stop.
Returns:
EFI_SUCCESS
EFI_DEVICE_ERROR
others
--*/
{
EFI_STATUS Status;
USB_FLOPPY_DEV *UsbFloppyDevice;
EFI_BLOCK_IO_PROTOCOL *BlkIo;
//
// First find USB_FLOPPY_DEV
//
gBS->OpenProtocol (
Controller,
&gEfiBlockIoProtocolGuid,
(VOID **) &BlkIo,
This->DriverBindingHandle,
Controller,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
UsbFloppyDevice = USB_FLOPPY_DEV_FROM_THIS (BlkIo);
//
// Uninstall Block I/O protocol from the device handle
//
Status = gBS->UninstallProtocolInterface (
Controller,
&gEfiBlockIoProtocolGuid,
&UsbFloppyDevice->BlkIo
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Stop using EFI_USB_ATAPI_PROTOCOL
//
gBS->CloseProtocol (
Controller,
&gEfiUsbAtapiProtocolGuid,
This->DriverBindingHandle,
Controller
);
if (UsbFloppyDevice->SenseData != NULL) {
gBS->FreePool (UsbFloppyDevice->SenseData);
}
gBS->FreePool (UsbFloppyDevice);
return EFI_SUCCESS;
}
STATIC
EFI_STATUS
EFIAPI
USBFloppyReset (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
/*++
Routine Description:
Implements EFI_BLOCK_IO_PROTOCOL.Reset() function.
Arguments:
This The EFI_BLOCK_IO_PROTOCOL instance.
ExtendedVerification
Indicates that the driver may perform a more exhaustive
verification operation of the device during reset.
(This parameter is ingored in this driver.)
Returns:
EFI_SUCCESS - Success
--*/
{
USB_FLOPPY_DEV *UsbFloppyDevice;
EFI_USB_ATAPI_PROTOCOL *UsbAtapiInterface;
EFI_STATUS Status;
UsbFloppyDevice = USB_FLOPPY_DEV_FROM_THIS (This);
UsbAtapiInterface = UsbFloppyDevice->AtapiProtocol;
//
// directly calling EFI_USB_ATAPI_PROTOCOL.Reset() to implement reset.
//
Status = UsbAtapiInterface->UsbAtapiReset (UsbAtapiInterface, ExtendedVerification);
return Status;
}
STATIC
EFI_STATUS
EFIAPI
USBFloppyReadBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
OUT VOID *Buffer
)
/*++
Routine Description:
Implements EFI_BLOCK_IO_PROTOCOL.ReadBlocks() function.
Arguments:
This The EFI_BLOCK_IO_PROTOCOL instance.
MediaId The media id that the read request is for.
LBA The starting logical block address to read from on the device.
BufferSize
The size of the Buffer in bytes. This must be a multiple of
the intrinsic block size of the device.
Buffer A pointer to the destination buffer for the data. The caller
is responsible for either having implicit or explicit ownership
of the buffer.
Returns:
EFI_INVALID_PARAMETER - Parameter is error
EFI_SUCCESS - Success
EFI_DEVICE_ERROR - Hardware Error
EFI_NO_MEDIA - No media
EFI_MEDIA_CHANGED - Media Change
EFI_BAD_BUFFER_SIZE - Buffer size is bad
--*/
{
USB_FLOPPY_DEV *UsbFloppyDevice;
EFI_STATUS Status;
EFI_BLOCK_IO_MEDIA *Media;
UINTN BlockSize;
UINTN NumberOfBlocks;
BOOLEAN MediaChange;
Status = EFI_SUCCESS;
MediaChange = FALSE;
UsbFloppyDevice = USB_FLOPPY_DEV_FROM_THIS (This);
//
// Check parameters
//
if (!Buffer) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
if (BufferSize == 0) {
Status = EFI_SUCCESS;
goto Done;
}
UsbFloppyTestUnitReady (UsbFloppyDevice);
Status = UsbFloppyDetectMedia (UsbFloppyDevice, &MediaChange);
if (EFI_ERROR (Status)) {
Status = EFI_DEVICE_ERROR;
goto Done;
}
if (MediaChange) {
gBS->ReinstallProtocolInterface (
UsbFloppyDevice->Handle,
&gEfiBlockIoProtocolGuid,
&UsbFloppyDevice->BlkIo,
&UsbFloppyDevice->BlkIo
);
}
Media = UsbFloppyDevice->BlkIo.Media;
BlockSize = Media->BlockSize;
NumberOfBlocks = BufferSize / BlockSize;
if (!(Media->MediaPresent)) {
Status = EFI_NO_MEDIA;
goto Done;
}
if (MediaId != Media->MediaId) {
Status = EFI_MEDIA_CHANGED;
goto Done;
}
if (BufferSize % BlockSize != 0) {
Status = EFI_BAD_BUFFER_SIZE;
goto Done;
}
if (LBA > Media->LastBlock) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
if ((LBA + NumberOfBlocks - 1) > Media->LastBlock) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
if ((Media->IoAlign > 1) && (((UINTN) Buffer & (Media->IoAlign - 1)) != 0)) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
while (NumberOfBlocks > 0) {
if (NumberOfBlocks > BLOCK_UNIT) {
Status = USBFloppyRead10 (UsbFloppyDevice, Buffer, LBA, BLOCK_UNIT);
} else {
Status = USBFloppyRead10 (UsbFloppyDevice, Buffer, LBA, NumberOfBlocks);
}
if (EFI_ERROR (Status)) {
This->Reset (This, TRUE);
Status = EFI_DEVICE_ERROR;
}
if (NumberOfBlocks > BLOCK_UNIT) {
NumberOfBlocks -= BLOCK_UNIT;
LBA += BLOCK_UNIT;
Buffer = (UINT8 *) Buffer + This->Media->BlockSize * BLOCK_UNIT;
} else {
NumberOfBlocks -= NumberOfBlocks;
LBA += NumberOfBlocks;
Buffer = (UINT8 *) Buffer + This->Media->BlockSize * NumberOfBlocks;
}
}
Done:
return Status;
}
STATIC
EFI_STATUS
EFIAPI
USBFloppyWriteBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
IN VOID *Buffer
)
/*++
Routine Description:
Implements EFI_BLOCK_IO_PROTOCOL.WriteBlocks() function.
Arguments:
This The EFI_BLOCK_IO_PROTOCOL instance.
MediaId The media id that the write request is for.
LBA The starting logical block address to be written.
The caller is responsible for writing to only
legitimate locations.
BufferSize
The size of the Buffer in bytes. This must be a multiple of
the intrinsic block size of the device.
Buffer A pointer to the source buffer for the data. The caller
is responsible for either having implicit or explicit ownership
of the buffer.
Returns:
EFI_INVALID_PARAMETER - Parameter is error
EFI_SUCCESS - Success
EFI_DEVICE_ERROR - Hardware Error
EFI_NO_MEDIA - No media
EFI_MEDIA_CHANGED - Media Change
EFI_BAD_BUFFER_SIZE - Buffer size is bad
--*/
{
USB_FLOPPY_DEV *UsbFloppyDevice;
EFI_STATUS Status;
EFI_BLOCK_IO_MEDIA *Media;
UINTN BlockSize;
UINTN NumberOfBlocks;
BOOLEAN MediaChange;
Status = EFI_SUCCESS;
MediaChange = FALSE;
UsbFloppyDevice = USB_FLOPPY_DEV_FROM_THIS (This);
//
// Check parameters
//
if (!Buffer) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
if (BufferSize == 0) {
Status = EFI_SUCCESS;
goto Done;
}
UsbFloppyTestUnitReady (UsbFloppyDevice);
Status = UsbFloppyDetectMedia (UsbFloppyDevice, &MediaChange);
if (EFI_ERROR (Status)) {
Status = EFI_DEVICE_ERROR;
goto Done;
}
if (MediaChange) {
gBS->ReinstallProtocolInterface (
UsbFloppyDevice->Handle,
&gEfiBlockIoProtocolGuid,
&UsbFloppyDevice->BlkIo,
&UsbFloppyDevice->BlkIo
);
}
Media = UsbFloppyDevice->BlkIo.Media;
BlockSize = Media->BlockSize;
NumberOfBlocks = BufferSize / BlockSize;
if (!(Media->MediaPresent)) {
Status = EFI_NO_MEDIA;
goto Done;
}
if (MediaId != Media->MediaId) {
Status = EFI_MEDIA_CHANGED;
goto Done;
}
if (BufferSize % BlockSize != 0) {
Status = EFI_BAD_BUFFER_SIZE;
goto Done;
}
if (LBA > Media->LastBlock) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
if ((LBA + NumberOfBlocks - 1) > Media->LastBlock) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
if ((Media->IoAlign > 1) && (((UINTN) Buffer & (Media->IoAlign - 1)) != 0)) {
Status = EFI_INVALID_PARAMETER;
goto Done;
}
if (UsbFloppyDevice->BlkMedia.ReadOnly) {
Status = EFI_WRITE_PROTECTED;
goto Done;
}
while (NumberOfBlocks > 0) {
if (NumberOfBlocks > BLOCK_UNIT) {
Status = USBFloppyWrite10 (UsbFloppyDevice, Buffer, LBA, BLOCK_UNIT);
} else {
Status = USBFloppyWrite10 (UsbFloppyDevice, Buffer, LBA, NumberOfBlocks);
}
if (EFI_ERROR (Status)) {
This->Reset (This, TRUE);
Status = EFI_DEVICE_ERROR;
}
if (NumberOfBlocks > BLOCK_UNIT) {
NumberOfBlocks -= BLOCK_UNIT;
LBA += BLOCK_UNIT;
Buffer = (UINT8 *) Buffer + This->Media->BlockSize * BLOCK_UNIT;
} else {
NumberOfBlocks -= NumberOfBlocks;
LBA += NumberOfBlocks;
Buffer = (UINT8 *) Buffer + This->Media->BlockSize * NumberOfBlocks;
}
}
Done:
return Status;
}
STATIC
EFI_STATUS
EFIAPI
USBFloppyFlushBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This
)
/*++
Routine Description:
Implements EFI_BLOCK_IO_PROTOCOL.FlushBlocks() function.
(In this driver, this function just returns EFI_SUCCESS.)
Arguments:
This The EFI_BLOCK_IO_PROTOCOL instance.
Returns:
EFI_SUCCESS - Success
--*/
{
return EFI_SUCCESS;
}
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