/** @file\r
+ USB Mass Storage Driver that manages USB Mass Storage Device and produces Block I/O Protocol.\r
\r
- The implementation of USB mass storage class device driver.\r
- The command set supported is "USB Mass Storage Specification\r
- for Bootability".\r
-\r
-Copyright (c) 2007 - 2008, Intel Corporation\r
-All rights reserved. This program and the accompanying materials\r
+Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
**/\r
\r
-#include "UsbMassImpl.h"\r
+#include "UsbMass.h"\r
\r
-USB_MASS_TRANSPORT *mUsbMassTransport[] = {\r
+#define USB_MASS_TRANSPORT_COUNT 3\r
+//\r
+// Array of USB transport interfaces.\r
+//\r
+USB_MASS_TRANSPORT *mUsbMassTransport[USB_MASS_TRANSPORT_COUNT] = {\r
&mUsbCbi0Transport,\r
&mUsbCbi1Transport,\r
&mUsbBotTransport,\r
+};\r
+\r
+EFI_DRIVER_BINDING_PROTOCOL gUSBMassDriverBinding = {\r
+ USBMassDriverBindingSupported,\r
+ USBMassDriverBindingStart,\r
+ USBMassDriverBindingStop,\r
+ 0x11,\r
+ NULL,\r
NULL\r
};\r
\r
/**\r
- Reset the block device. ExtendedVerification is ignored for this.\r
+ Reset the block device.\r
+\r
+ This function implements EFI_BLOCK_IO_PROTOCOL.Reset().\r
+ It resets the block device hardware.\r
+ ExtendedVerification is ignored in this implementation.\r
\r
- @param This The BLOCK IO protocol\r
- @param ExtendedVerification Whether to execute extended verification.\r
+ @param This Indicates a pointer to the calling context.\r
+ @param ExtendedVerification Indicates that the driver may perform a more exhaustive\r
+ verification operation of the device during reset.\r
\r
- @retval EFI_SUCCESS The device is successfully reseted.\r
- @retval Others Failed to reset the device.\r
+ @retval EFI_SUCCESS The block device was reset.\r
+ @retval EFI_DEVICE_ERROR The block device is not functioning correctly and could not be reset.\r
\r
**/\r
EFI_STATUS\r
EFI_TPL OldTpl;\r
EFI_STATUS Status;\r
\r
- OldTpl = gBS->RaiseTPL (USB_MASS_TPL);\r
+ //\r
+ // Raise TPL to TPL_CALLBACK to serialize all its operations\r
+ // to protect shared data structures.\r
+ //\r
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
\r
- UsbMass = USB_MASS_DEVICE_FROM_BLOCKIO (This);\r
+ UsbMass = USB_MASS_DEVICE_FROM_BLOCK_IO (This);\r
Status = UsbMass->Transport->Reset (UsbMass->Context, ExtendedVerification);\r
\r
gBS->RestoreTPL (OldTpl);\r
}\r
\r
/**\r
- Read some blocks of data from the block device.\r
-\r
- @param This The Block IO protocol\r
- @param MediaId The media's ID of the device for current request\r
- @param Lba The start block number\r
- @param BufferSize The size of buffer to read data in\r
- @param Buffer The buffer to read data to\r
-\r
- @retval EFI_SUCCESS The data is successfully read\r
- @retval EFI_NO_MEDIA Media isn't present\r
- @retval EFI_MEDIA_CHANGED The device media has been changed, that is,\r
- MediaId changed\r
- @retval EFI_INVALID_PARAMETER Some parameters are invalid, such as Buffer is\r
- NULL.\r
- @retval EFI_BAD_BUFFER_SIZE The buffer size isn't a multiple of media's block\r
- size, or overflow the last block number.\r
+ Reads the requested number of blocks from the device.\r
+\r
+ This function implements EFI_BLOCK_IO_PROTOCOL.ReadBlocks().\r
+ It reads the requested number of blocks from the device.\r
+ All the blocks are read, or an error is returned.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param MediaId The media ID that the read request is for.\r
+ @param Lba The starting logical block address to read from on the device.\r
+ @param BufferSize The size of the Buffer in bytes.\r
+ This must be a multiple of the intrinsic block size of the device.\r
+ @param Buffer A pointer to the destination buffer for the data. The caller is\r
+ responsible for either having implicit or explicit ownership of the buffer.\r
+\r
+ @retval EFI_SUCCESS The data was read correctly from the device.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while attempting to perform the read operation.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+ @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r
+ @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the intrinsic block size of the device.\r
+ @retval EFI_INVALID_PARAMETER The read request contains LBAs that are not valid,\r
+ or the buffer is not on proper alignment.\r
\r
**/\r
EFI_STATUS\r
EFI_TPL OldTpl;\r
UINTN TotalBlock;\r
\r
- OldTpl = gBS->RaiseTPL (USB_MASS_TPL);\r
- UsbMass = USB_MASS_DEVICE_FROM_BLOCKIO (This);\r
- Media = &UsbMass->BlockIoMedia;\r
-\r
//\r
- // First, validate the parameters\r
+ // Raise TPL to TPL_CALLBACK to serialize all its operations\r
+ // to protect shared data structures.\r
//\r
- if ((Buffer == NULL) || (BufferSize == 0)) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto ON_EXIT;\r
- }\r
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
+ UsbMass = USB_MASS_DEVICE_FROM_BLOCK_IO (This);\r
+ Media = &UsbMass->BlockIoMedia;\r
\r
//\r
// If it is a removable media, such as CD-Rom or Usb-Floppy,\r
- // need to detect the media before each rw. While some of\r
+ // need to detect the media before each read/write. While some of\r
// Usb-Flash is marked as removable media.\r
//\r
- //\r
- if (Media->RemovableMedia == TRUE) {\r
+ if (Media->RemovableMedia) {\r
Status = UsbBootDetectMedia (UsbMass);\r
if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "UsbMassReadBlocks: UsbBootDetectMedia (%r)\n", Status));\r
goto ON_EXIT;\r
}\r
}\r
\r
+ if (!(Media->MediaPresent)) {\r
+ Status = EFI_NO_MEDIA;\r
+ goto ON_EXIT;\r
+ }\r
+\r
+ if (MediaId != Media->MediaId) {\r
+ Status = EFI_MEDIA_CHANGED;\r
+ goto ON_EXIT;\r
+ }\r
+\r
+ if (BufferSize == 0) {\r
+ Status = EFI_SUCCESS;\r
+ goto ON_EXIT;\r
+ }\r
+\r
+ if (Buffer == NULL) {\r
+ Status = EFI_INVALID_PARAMETER;\r
+ goto ON_EXIT;\r
+ }\r
+\r
//\r
- // Make sure BlockSize and LBA is consistent with BufferSize\r
+ // BufferSize must be a multiple of the intrinsic block size of the device.\r
//\r
if ((BufferSize % Media->BlockSize) != 0) {\r
Status = EFI_BAD_BUFFER_SIZE;\r
\r
TotalBlock = BufferSize / Media->BlockSize;\r
\r
+ //\r
+ // Make sure the range to read is valid.\r
+ //\r
if (Lba + TotalBlock - 1 > Media->LastBlock) {\r
Status = EFI_INVALID_PARAMETER;\r
goto ON_EXIT;\r
}\r
\r
- if (!(Media->MediaPresent)) {\r
- Status = EFI_NO_MEDIA;\r
- goto ON_EXIT;\r
- }\r
-\r
- if (MediaId != Media->MediaId) {\r
- Status = EFI_MEDIA_CHANGED;\r
- goto ON_EXIT;\r
+ if (UsbMass->Cdb16Byte) {\r
+ Status = UsbBootReadBlocks16 (UsbMass, Lba, TotalBlock, Buffer);\r
+ } else {\r
+ Status = UsbBootReadBlocks (UsbMass, (UINT32) Lba, TotalBlock, Buffer);\r
}\r
\r
- Status = UsbBootReadBlocks (UsbMass, (UINT32) Lba, TotalBlock, Buffer);\r
if (EFI_ERROR (Status)) {\r
DEBUG ((EFI_D_ERROR, "UsbMassReadBlocks: UsbBootReadBlocks (%r) -> Reset\n", Status));\r
UsbMassReset (This, TRUE);\r
\r
\r
/**\r
- Write some blocks of data to the block device.\r
-\r
- @param This The Block IO protocol\r
- @param MediaId The media's ID of the device for current request\r
- @param Lba The start block number\r
- @param BufferSize The size of buffer to write data to\r
- @param Buffer The buffer to write data to\r
-\r
- @retval EFI_SUCCESS The data is successfully written\r
- @retval EFI_NO_MEDIA Media isn't present\r
- @retval EFI_MEDIA_CHANGED The device media has been changed, that is,\r
- MediaId changed\r
- @retval EFI_INVALID_PARAMETER Some parameters are invalid, such as Buffer is\r
- NULL.\r
- @retval EFI_BAD_BUFFER_SIZE The buffer size isn't a multiple of media's block\r
- size,\r
+ Writes a specified number of blocks to the device.\r
+\r
+ This function implements EFI_BLOCK_IO_PROTOCOL.WriteBlocks().\r
+ It writes a specified number of blocks to the device.\r
+ All blocks are written, or an error is returned.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param MediaId The media ID that the write request is for.\r
+ @param Lba The starting logical block address to be written.\r
+ @param BufferSize The size of the Buffer in bytes.\r
+ This must be a multiple of the intrinsic block size of the device.\r
+ @param Buffer Pointer to the source buffer for the data.\r
+\r
+ @retval EFI_SUCCESS The data were written correctly to the device.\r
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+ @retval EFI_MEDIA_CHANGED The MediaId is not for the current media.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while attempting to perform the write operation.\r
+ @retval EFI_BAD_BUFFER_SIZE The BufferSize parameter is not a multiple of the intrinsic\r
+ block size of the device.\r
+ @retval EFI_INVALID_PARAMETER The write request contains LBAs that are not valid,\r
+ or the buffer is not on proper alignment.\r
\r
**/\r
EFI_STATUS\r
EFI_TPL OldTpl;\r
UINTN TotalBlock;\r
\r
- OldTpl = gBS->RaiseTPL (USB_MASS_TPL);\r
- UsbMass = USB_MASS_DEVICE_FROM_BLOCKIO (This);\r
- Media = &UsbMass->BlockIoMedia;\r
-\r
//\r
- // First, validate the parameters\r
+ // Raise TPL to TPL_CALLBACK to serialize all its operations\r
+ // to protect shared data structures.\r
//\r
- if ((Buffer == NULL) || (BufferSize == 0)) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto ON_EXIT;\r
- }\r
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
+ UsbMass = USB_MASS_DEVICE_FROM_BLOCK_IO (This);\r
+ Media = &UsbMass->BlockIoMedia;\r
\r
//\r
// If it is a removable media, such as CD-Rom or Usb-Floppy,\r
- // need to detect the media before each rw. While some of\r
- // Usb-Flash is marked as removable media.\r
+ // need to detect the media before each read/write. Some of\r
+ // USB Flash is marked as removable media.\r
//\r
- //\r
- if (Media->RemovableMedia == TRUE) {\r
+ if (Media->RemovableMedia) {\r
Status = UsbBootDetectMedia (UsbMass);\r
if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "UsbMassWriteBlocks: UsbBootDetectMedia (%r)\n", Status));\r
goto ON_EXIT;\r
}\r
}\r
\r
- //\r
- // Make sure BlockSize and LBA is consistent with BufferSize\r
- //\r
- if ((BufferSize % Media->BlockSize) != 0) {\r
- Status = EFI_BAD_BUFFER_SIZE;\r
+ if (!(Media->MediaPresent)) {\r
+ Status = EFI_NO_MEDIA;\r
goto ON_EXIT;\r
}\r
\r
- TotalBlock = BufferSize / Media->BlockSize;\r
+ if (MediaId != Media->MediaId) {\r
+ Status = EFI_MEDIA_CHANGED;\r
+ goto ON_EXIT;\r
+ }\r
\r
- if (Lba + TotalBlock - 1 > Media->LastBlock) {\r
+ if (BufferSize == 0) {\r
+ Status = EFI_SUCCESS;\r
+ goto ON_EXIT;\r
+ }\r
+\r
+ if (Buffer == NULL) {\r
Status = EFI_INVALID_PARAMETER;\r
goto ON_EXIT;\r
}\r
\r
- if (!(Media->MediaPresent)) {\r
- Status = EFI_NO_MEDIA;\r
+ //\r
+ // BufferSize must be a multiple of the intrinsic block size of the device.\r
+ //\r
+ if ((BufferSize % Media->BlockSize) != 0) {\r
+ Status = EFI_BAD_BUFFER_SIZE;\r
goto ON_EXIT;\r
}\r
\r
- if (MediaId != Media->MediaId) {\r
- Status = EFI_MEDIA_CHANGED;\r
+ TotalBlock = BufferSize / Media->BlockSize;\r
+\r
+ //\r
+ // Make sure the range to write is valid.\r
+ //\r
+ if (Lba + TotalBlock - 1 > Media->LastBlock) {\r
+ Status = EFI_INVALID_PARAMETER;\r
goto ON_EXIT;\r
}\r
\r
// Try to write the data even the device is marked as ReadOnly,\r
// and clear the status should the write succeed.\r
//\r
- Status = UsbBootWriteBlocks (UsbMass, (UINT32) Lba, TotalBlock, Buffer);\r
+ if (UsbMass->Cdb16Byte) {\r
+ Status = UsbBootWriteBlocks16 (UsbMass, Lba, TotalBlock, Buffer);\r
+ } else {\r
+ Status = UsbBootWriteBlocks (UsbMass, (UINT32) Lba, TotalBlock, Buffer);\r
+ }\r
+\r
if (EFI_ERROR (Status)) {\r
DEBUG ((EFI_D_ERROR, "UsbMassWriteBlocks: UsbBootWriteBlocks (%r) -> Reset\n", Status));\r
UsbMassReset (This, TRUE);\r
}\r
\r
/**\r
- Flush the cached writes to disks. USB mass storage device doesn't\r
- support write cache, so return EFI_SUCCESS directly.\r
+ Flushes all modified data to a physical block device.\r
+\r
+ This function implements EFI_BLOCK_IO_PROTOCOL.FlushBlocks().\r
+ USB mass storage device doesn't support write cache,\r
+ so return EFI_SUCCESS directly.\r
\r
- @param This The BLOCK IO protocol\r
+ @param This Indicates a pointer to the calling context.\r
\r
- @retval EFI_SUCCESS Always returns success\r
+ @retval EFI_SUCCESS All outstanding data were written correctly to the device.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while attempting to write data.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
\r
**/\r
EFI_STATUS\r
}\r
\r
/**\r
- Retrieve the media parameters such as disk geometric for the\r
- device's BLOCK IO protocol.\r
+ Initialize the media parameter data for EFI_BLOCK_IO_MEDIA of Block I/O Protocol.\r
\r
@param UsbMass The USB mass storage device\r
\r
- @retval EFI_SUCCESS The media parameters is updated successfully.\r
+ @retval EFI_SUCCESS The media parameters are updated successfully.\r
@retval Others Failed to get the media parameters.\r
\r
**/\r
{\r
EFI_BLOCK_IO_MEDIA *Media;\r
EFI_STATUS Status;\r
- UINTN Index;\r
\r
Media = &UsbMass->BlockIoMedia;\r
\r
//\r
- // Initialize the MediaPrsent/ReadOnly and others to the default.\r
- // We are not forced to get it right at this time, check UEFI2.0\r
- // spec for more information:\r
- //\r
- // MediaPresent: This field shows the media present status as\r
- // of the most recent ReadBlocks or WriteBlocks call.\r
- //\r
- // ReadOnly : This field shows the read-only status as of the\r
- // recent WriteBlocks call.\r
- //\r
- // but remember to update MediaId/MediaPresent/ReadOnly status\r
- // after ReadBlocks and WriteBlocks\r
+ // Fields of EFI_BLOCK_IO_MEDIA are defined in UEFI 2.0 spec,\r
+ // section for Block I/O Protocol.\r
//\r
Media->MediaPresent = FALSE;\r
Media->LogicalPartition = FALSE;\r
Media->IoAlign = 0;\r
Media->MediaId = 1;\r
\r
- //\r
- // Some device may spend several seconds before it is ready.\r
- // Try several times before giving up. Wait 5s at most.\r
- //\r
- Status = EFI_SUCCESS;\r
-\r
- for (Index = 0; Index < USB_BOOT_INIT_MEDIA_RETRY; Index++) {\r
-\r
- Status = UsbBootGetParams (UsbMass);\r
- if ((Status != EFI_MEDIA_CHANGED)\r
- && (Status != EFI_NOT_READY)\r
- && (Status != EFI_TIMEOUT)) {\r
- break;\r
- }\r
-\r
- Status = UsbBootIsUnitReady (UsbMass);\r
- if (EFI_ERROR (Status)) {\r
- gBS->Stall (USB_BOOT_RETRY_UNIT_READY_STALL * (Index + 1));\r
- }\r
-\r
+ Status = UsbBootGetParams (UsbMass);\r
+ DEBUG ((DEBUG_INFO, "UsbMassInitMedia: UsbBootGetParams (%r)\n", Status));\r
+ if (Status == EFI_MEDIA_CHANGED) {\r
+ //\r
+ // Some USB storage devices may report MEDIA_CHANGED sense key when hot-plugged.\r
+ // Treat it as SUCCESS\r
+ //\r
+ Status = EFI_SUCCESS;\r
}\r
-\r
return Status;\r
}\r
\r
/**\r
- Initilize the transport.\r
+ Initilize the USB Mass Storage transport.\r
+\r
+ This function tries to find the matching USB Mass Storage transport\r
+ protocol for USB device. If found, initializes the matching transport.\r
\r
@param This The USB mass driver's driver binding.\r
@param Controller The device to test.\r
@param Transport The pointer to pointer to USB_MASS_TRANSPORT.\r
- @param Context The passing parameter.\r
+ @param Context The parameter for USB_MASS_DEVICE.Context.\r
@param MaxLun Get the MaxLun if is BOT dev.\r
\r
@retval EFI_SUCCESS The initialization is successful.\r
+ @retval EFI_UNSUPPORTED No matching transport protocol is found.\r
@retval Others Failed to initialize dev.\r
\r
**/\r
EFI_USB_INTERFACE_DESCRIPTOR Interface;\r
UINT8 Index;\r
EFI_STATUS Status;\r
- \r
+\r
Status = gBS->OpenProtocol (\r
Controller,\r
&gEfiUsbIoProtocolGuid,\r
);\r
\r
if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "UsbMassInitTransport: OpenUsbIoProtocol By Driver (%r)\n", Status));\r
return Status;\r
}\r
- \r
+\r
Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &Interface);\r
if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "UsbMassInitTransport: UsbIo->UsbGetInterfaceDescriptor (%r)\n", Status));\r
goto ON_EXIT;\r
}\r
- \r
+\r
Status = EFI_UNSUPPORTED;\r
\r
- for (Index = 0; mUsbMassTransport[Index] != NULL; Index++) {\r
+ //\r
+ // Traverse the USB_MASS_TRANSPORT arrary and try to find the\r
+ // matching transport protocol.\r
+ // If not found, return EFI_UNSUPPORTED.\r
+ // If found, execute USB_MASS_TRANSPORT.Init() to initialize the transport context.\r
+ //\r
+ for (Index = 0; Index < USB_MASS_TRANSPORT_COUNT; Index++) {\r
*Transport = mUsbMassTransport[Index];\r
\r
if (Interface.InterfaceProtocol == (*Transport)->Protocol) {\r
}\r
\r
if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "UsbMassInitTransport: Transport->Init (%r)\n", Status));\r
goto ON_EXIT;\r
}\r
\r
//\r
- // For bot device, try to get max lun. \r
- // If maxlun=0, then non-lun device, else multi-lun device.\r
+ // For BOT device, try to get its max LUN.\r
+ // If max LUN is 0, then it is a non-lun device.\r
+ // Otherwise, it is a multi-lun device.\r
//\r
if ((*Transport)->Protocol == USB_MASS_STORE_BOT) {\r
(*Transport)->GetMaxLun (*Context, MaxLun);\r
- DEBUG ((EFI_D_INFO, "UsbMassInitTransport: GetMaxLun = %d\n", *MaxLun));\r
}\r
\r
ON_EXIT:\r
This->DriverBindingHandle,\r
Controller\r
);\r
- return Status; \r
+ return Status;\r
}\r
\r
/**\r
- Usb mass storage driver initializes multi lun.\r
+ Initialize data for device that supports multiple LUNSs.\r
\r
- @param This The USB mass driver's driver binding.\r
- @param Controller The device to test.\r
- @param Transport The pointer to USB_MASS_TRANSPORT.\r
- @param Context The passing parameter.\r
- @param DevicePath The remaining device path\r
- @param MaxLun The MaxLun number passed.\r
+ @param This The Driver Binding Protocol instance.\r
+ @param Controller The device to initialize.\r
+ @param Transport Pointer to USB_MASS_TRANSPORT.\r
+ @param Context Parameter for USB_MASS_DEVICE.Context.\r
+ @param DevicePath The remaining device path.\r
+ @param MaxLun The max LUN number.\r
\r
- @retval EFI_SUCCESS Initialization is success.\r
- @retval Other Initialization fails.\r
+ @retval EFI_SUCCESS At least one LUN is initialized successfully.\r
+ @retval EFI_NOT_FOUND Fail to initialize any of multiple LUNs.\r
\r
**/\r
EFI_STATUS\r
UsbMassInitMultiLun (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
IN EFI_HANDLE Controller,\r
IN USB_MASS_TRANSPORT *Transport,\r
IN VOID *Context,\r
DEVICE_LOGICAL_UNIT_DEVICE_PATH LunNode;\r
UINT8 Index;\r
EFI_STATUS Status;\r
+ EFI_STATUS ReturnStatus;\r
\r
ASSERT (MaxLun > 0);\r
+ ReturnStatus = EFI_NOT_FOUND;\r
\r
- for (Index = 0; Index <= MaxLun; Index++) { \r
+ for (Index = 0; Index <= MaxLun; Index++) {\r
\r
DEBUG ((EFI_D_INFO, "UsbMassInitMultiLun: Start to initialize No.%d logic unit\n", Index));\r
- \r
+\r
UsbIo = NULL;\r
UsbMass = AllocateZeroPool (sizeof (USB_MASS_DEVICE));\r
- if (UsbMass == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto ON_ERROR;\r
- }\r
- \r
+ ASSERT (UsbMass != NULL);\r
+\r
UsbMass->Signature = USB_MASS_SIGNATURE;\r
UsbMass->UsbIo = UsbIo;\r
UsbMass->BlockIo.Media = &UsbMass->BlockIoMedia;\r
UsbMass->Transport = Transport;\r
UsbMass->Context = Context;\r
UsbMass->Lun = Index;\r
- \r
+\r
//\r
- // Get the storage's parameters, such as last block number.\r
- // then install the BLOCK_IO\r
+ // Initialize the media parameter data for EFI_BLOCK_IO_MEDIA of Block I/O Protocol.\r
//\r
Status = UsbMassInitMedia (UsbMass);\r
- if (!EFI_ERROR (Status)) {\r
- if ((UsbMass->Pdt != USB_PDT_DIRECT_ACCESS) && \r
- (UsbMass->Pdt != USB_PDT_CDROM) &&\r
- (UsbMass->Pdt != USB_PDT_OPTICAL) && \r
- (UsbMass->Pdt != USB_PDT_SIMPLE_DIRECT)) {\r
- DEBUG ((EFI_D_ERROR, "UsbMassInitMultiLun: Found an unsupported peripheral type[%d]\n", UsbMass->Pdt));\r
- goto ON_ERROR;\r
- }\r
- } else if (Status != EFI_NO_MEDIA){\r
+ if ((EFI_ERROR (Status)) && (Status != EFI_NO_MEDIA)) {\r
DEBUG ((EFI_D_ERROR, "UsbMassInitMultiLun: UsbMassInitMedia (%r)\n", Status));\r
- goto ON_ERROR;\r
+ FreePool (UsbMass);\r
+ continue;\r
}\r
\r
//\r
- // Create a device path node of device logic unit, and append it \r
+ // Create a device path node for device logic unit, and append it.\r
//\r
LunNode.Header.Type = MESSAGING_DEVICE_PATH;\r
LunNode.Header.SubType = MSG_DEVICE_LOGICAL_UNIT_DP;\r
LunNode.Lun = UsbMass->Lun;\r
- \r
+\r
SetDevicePathNodeLength (&LunNode.Header, sizeof (LunNode));\r
- \r
+\r
UsbMass->DevicePath = AppendDevicePathNode (DevicePath, &LunNode.Header);\r
- \r
+\r
if (UsbMass->DevicePath == NULL) {\r
DEBUG ((EFI_D_ERROR, "UsbMassInitMultiLun: failed to create device logic unit device path\n"));\r
- \r
Status = EFI_OUT_OF_RESOURCES;\r
- goto ON_ERROR;\r
+ FreePool (UsbMass);\r
+ continue;\r
}\r
\r
+ InitializeDiskInfo (UsbMass);\r
+\r
//\r
- // Create a UsbMass handle for each lun, and install blockio and devicepath protocols.\r
+ // Create a new handle for each LUN, and install Block I/O Protocol and Device Path Protocol.\r
//\r
Status = gBS->InstallMultipleProtocolInterfaces (\r
&UsbMass->Controller,\r
UsbMass->DevicePath,\r
&gEfiBlockIoProtocolGuid,\r
&UsbMass->BlockIo,\r
+ &gEfiDiskInfoProtocolGuid,\r
+ &UsbMass->DiskInfo,\r
NULL\r
);\r
- \r
+\r
if (EFI_ERROR (Status)) {\r
DEBUG ((EFI_D_ERROR, "UsbMassInitMultiLun: InstallMultipleProtocolInterfaces (%r)\n", Status));\r
- goto ON_ERROR;\r
+ FreePool (UsbMass->DevicePath);\r
+ FreePool (UsbMass);\r
+ continue;\r
}\r
\r
//\r
- // Open UsbIo protocol by child to setup a parent-child relationship.\r
+ // Open USB I/O Protocol by child to setup a parent-child relationship.\r
//\r
Status = gBS->OpenProtocol (\r
Controller,\r
UsbMass->DevicePath,\r
&gEfiBlockIoProtocolGuid,\r
&UsbMass->BlockIo,\r
+ &gEfiDiskInfoProtocolGuid,\r
+ &UsbMass->DiskInfo,\r
NULL\r
);\r
- goto ON_ERROR;\r
+ FreePool (UsbMass->DevicePath);\r
+ FreePool (UsbMass);\r
+ continue;\r
}\r
- \r
+ ReturnStatus = EFI_SUCCESS;\r
DEBUG ((EFI_D_INFO, "UsbMassInitMultiLun: Success to initialize No.%d logic unit\n", Index));\r
}\r
- \r
- return EFI_SUCCESS;\r
-\r
-ON_ERROR:\r
- if (UsbMass->DevicePath != NULL) {\r
- gBS->FreePool (UsbMass->DevicePath);\r
- }\r
- if (UsbMass != NULL) {\r
- gBS->FreePool (UsbMass);\r
- }\r
- if (UsbIo != NULL) {\r
- gBS->CloseProtocol (\r
- Controller,\r
- &gEfiUsbIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- UsbMass->Controller\r
- );\r
- }\r
\r
- //\r
- // If only success to initialize one lun, return success, or else return error\r
- //\r
- if (Index > 0) {\r
- return EFI_SUCCESS; \r
- } else {\r
- return Status;\r
- } \r
+ return ReturnStatus;\r
}\r
\r
/**\r
- Initialize No/Unsupported LUN device.\r
+ Initialize data for device that does not support multiple LUNSs.\r
\r
- @param This The USB mass driver's driver binding.\r
- @param Controller The device to test.\r
- @param Transport The pointer to USB_MASS_TRANSPORT.\r
- @param Context The passing parameter.\r
+ @param This The Driver Binding Protocol instance.\r
+ @param Controller The device to initialize.\r
+ @param Transport Pointer to USB_MASS_TRANSPORT.\r
+ @param Context Parameter for USB_MASS_DEVICE.Context.\r
\r
- @retval EFI_SUCCESS Initialization is success.\r
+ @retval EFI_SUCCESS Initialization succeeds.\r
@retval Other Initialization fails.\r
\r
**/\r
\r
UsbIo = NULL;\r
UsbMass = AllocateZeroPool (sizeof (USB_MASS_DEVICE));\r
- if (UsbMass == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
+ ASSERT (UsbMass != NULL);\r
+\r
Status = gBS->OpenProtocol (\r
Controller,\r
&gEfiUsbIoProtocolGuid,\r
DEBUG ((EFI_D_ERROR, "UsbMassInitNonLun: OpenUsbIoProtocol By Driver (%r)\n", Status));\r
goto ON_ERROR;\r
}\r
- \r
+\r
UsbMass->Signature = USB_MASS_SIGNATURE;\r
UsbMass->Controller = Controller;\r
UsbMass->UsbIo = UsbIo;\r
UsbMass->OpticalStorage = FALSE;\r
UsbMass->Transport = Transport;\r
UsbMass->Context = Context;\r
- \r
+\r
//\r
- // Get the storage's parameters, such as last block number.\r
- // then install the BLOCK_IO\r
+ // Initialize the media parameter data for EFI_BLOCK_IO_MEDIA of Block I/O Protocol.\r
//\r
Status = UsbMassInitMedia (UsbMass);\r
- if (!EFI_ERROR (Status)) {\r
- if ((UsbMass->Pdt != USB_PDT_DIRECT_ACCESS) && \r
- (UsbMass->Pdt != USB_PDT_CDROM) &&\r
- (UsbMass->Pdt != USB_PDT_OPTICAL) && \r
- (UsbMass->Pdt != USB_PDT_SIMPLE_DIRECT)) {\r
- DEBUG ((EFI_D_ERROR, "UsbMassInitNonLun: Found an unsupported peripheral type[%d]\n", UsbMass->Pdt));\r
- goto ON_ERROR;\r
- }\r
- } else if (Status != EFI_NO_MEDIA){\r
+ if ((EFI_ERROR (Status)) && (Status != EFI_NO_MEDIA)) {\r
DEBUG ((EFI_D_ERROR, "UsbMassInitNonLun: UsbMassInitMedia (%r)\n", Status));\r
goto ON_ERROR;\r
}\r
- \r
- Status = gBS->InstallProtocolInterface (\r
+\r
+ InitializeDiskInfo (UsbMass);\r
+\r
+ Status = gBS->InstallMultipleProtocolInterfaces (\r
&Controller,\r
&gEfiBlockIoProtocolGuid,\r
- EFI_NATIVE_INTERFACE,\r
- &UsbMass->BlockIo\r
+ &UsbMass->BlockIo,\r
+ &gEfiDiskInfoProtocolGuid,\r
+ &UsbMass->DiskInfo,\r
+ NULL\r
);\r
if (EFI_ERROR (Status)) {\r
goto ON_ERROR;\r
\r
ON_ERROR:\r
if (UsbMass != NULL) {\r
- gBS->FreePool (UsbMass);\r
+ FreePool (UsbMass);\r
}\r
- gBS->CloseProtocol (\r
- Controller,\r
- &gEfiUsbIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
- return Status; \r
+ if (UsbIo != NULL) {\r
+ gBS->CloseProtocol (\r
+ Controller,\r
+ &gEfiUsbIoProtocolGuid,\r
+ This->DriverBindingHandle,\r
+ Controller\r
+ );\r
+ }\r
+ return Status;\r
}\r
\r
\r
/**\r
Check whether the controller is a supported USB mass storage.\r
\r
- @param This The USB mass driver's driver binding.\r
- @param Controller The device to test against.\r
- @param RemainingDevicePath The remaining device path\r
+ @param This The USB mass storage driver binding protocol.\r
+ @param Controller The controller handle to check.\r
+ @param RemainingDevicePath The remaining device path.\r
\r
- @retval EFI_SUCCESS This device is a supported USB mass storage.\r
- @retval EFI_UNSUPPORTED The device isn't supported\r
- @retval Others Some error happened.\r
+ @retval EFI_SUCCESS The driver supports this controller.\r
+ @retval other This device isn't supported.\r
\r
**/\r
EFI_STATUS\r
EFI_USB_INTERFACE_DESCRIPTOR Interface;\r
USB_MASS_TRANSPORT *Transport;\r
EFI_STATUS Status;\r
- INTN Index;\r
+ UINTN Index;\r
\r
- //\r
- // Check whether the controller support USB_IO\r
- //\r
Status = gBS->OpenProtocol (\r
Controller,\r
&gEfiUsbIoProtocolGuid,\r
}\r
\r
//\r
- // Get the interface to check the USB class and find a transport\r
+ // Get the interface descriptor to check the USB class and find a transport\r
// protocol handler.\r
//\r
Status = UsbIo->UsbGetInterfaceDescriptor (UsbIo, &Interface);\r
goto ON_EXIT;\r
}\r
\r
- for (Index = 0; mUsbMassTransport[Index] != NULL; Index++) {\r
+ //\r
+ // Traverse the USB_MASS_TRANSPORT arrary and try to find the\r
+ // matching transport method.\r
+ // If not found, return EFI_UNSUPPORTED.\r
+ // If found, execute USB_MASS_TRANSPORT.Init() to initialize the transport context.\r
+ //\r
+ for (Index = 0; Index < USB_MASS_TRANSPORT_COUNT; Index++) {\r
Transport = mUsbMassTransport[Index];\r
if (Interface.InterfaceProtocol == Transport->Protocol) {\r
Status = Transport->Init (UsbIo, NULL);\r
}\r
}\r
\r
- DEBUG ((EFI_D_INFO, "Found a USB mass store device %r\n", Status));\r
-\r
ON_EXIT:\r
gBS->CloseProtocol (\r
- Controller,\r
- &gEfiUsbIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
+ Controller,\r
+ &gEfiUsbIoProtocolGuid,\r
+ This->DriverBindingHandle,\r
+ Controller\r
+ );\r
\r
return Status;\r
}\r
\r
-\r
/**\r
- Start the USB mass storage device on the controller. It will\r
- install a BLOCK_IO protocol on the device if everything is OK.\r
+ Starts the USB mass storage device with this driver.\r
\r
- @param This The USB mass storage driver binding.\r
- @param Controller The USB mass storage device to start on\r
- @param RemainingDevicePath The remaining device path.\r
+ This function consumes USB I/O Portocol, intializes USB mass storage device,\r
+ installs Block I/O Protocol, and submits Asynchronous Interrupt\r
+ Transfer to manage the USB mass storage device.\r
\r
- @retval EFI_SUCCESS The driver has started on the device.\r
- @retval EFI_OUT_OF_RESOURCES Failed to allocate memory\r
- @retval Others Failed to start the driver on the device.\r
+ @param This The USB mass storage driver binding protocol.\r
+ @param Controller The USB mass storage device to start on\r
+ @param RemainingDevicePath The remaining device path.\r
+\r
+ @retval EFI_SUCCESS This driver supports this device.\r
+ @retval EFI_UNSUPPORTED This driver does not support this device.\r
+ @retval EFI_DEVICE_ERROR This driver cannot be started due to device Error.\r
+ @retval EFI_OUT_OF_RESOURCES Can't allocate memory resources.\r
+ @retval EFI_ALREADY_STARTED This driver has been started.\r
\r
**/\r
EFI_STATUS\r
VOID *Context;\r
UINT8 MaxLun;\r
EFI_STATUS Status;\r
- \r
+ EFI_USB_IO_PROTOCOL *UsbIo;\r
+ EFI_TPL OldTpl;\r
+\r
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
+\r
Transport = NULL;\r
Context = NULL;\r
MaxLun = 0;\r
\r
- //\r
- // Get interface and protocols, initialize transport\r
- //\r
Status = UsbMassInitTransport (This, Controller, &Transport, &Context, &MaxLun);\r
\r
if (EFI_ERROR (Status)) {\r
DEBUG ((EFI_D_ERROR, "USBMassDriverBindingStart: UsbMassInitTransport (%r)\n", Status));\r
- return Status;\r
+ goto Exit;\r
}\r
if (MaxLun == 0) {\r
//\r
- // Initialize No/Unsupported LUN device\r
+ // Initialize data for device that does not support multiple LUNSs.\r
//\r
- Status = UsbMassInitNonLun(This, Controller, Transport, Context);\r
- if (EFI_ERROR (Status)) { \r
+ Status = UsbMassInitNonLun (This, Controller, Transport, Context);\r
+ if (EFI_ERROR (Status)) {\r
DEBUG ((EFI_D_ERROR, "USBMassDriverBindingStart: UsbMassInitNonLun (%r)\n", Status));\r
}\r
} else {\r
//\r
- // Open device path to prepare append Device Logic Unit node.\r
+ // Open device path to prepare for appending Device Logic Unit node.\r
//\r
Status = gBS->OpenProtocol (\r
Controller,\r
Controller,\r
EFI_OPEN_PROTOCOL_BY_DRIVER\r
);\r
- \r
+\r
if (EFI_ERROR (Status)) {\r
DEBUG ((EFI_D_ERROR, "USBMassDriverBindingStart: OpenDevicePathProtocol By Driver (%r)\n", Status));\r
- return Status;\r
+ goto Exit;\r
+ }\r
+\r
+ Status = gBS->OpenProtocol (\r
+ Controller,\r
+ &gEfiUsbIoProtocolGuid,\r
+ (VOID **) &UsbIo,\r
+ This->DriverBindingHandle,\r
+ Controller,\r
+ EFI_OPEN_PROTOCOL_BY_DRIVER\r
+ );\r
+\r
+ if (EFI_ERROR (Status)) {\r
+ DEBUG ((EFI_D_ERROR, "USBMassDriverBindingStart: OpenUsbIoProtocol By Driver (%r)\n", Status));\r
+ gBS->CloseProtocol (\r
+ Controller,\r
+ &gEfiDevicePathProtocolGuid,\r
+ This->DriverBindingHandle,\r
+ Controller\r
+ );\r
+ goto Exit;\r
}\r
\r
//\r
- // Try best to initialize all LUNs, and return success only if one of LUNs successed to initialized.\r
+ // Initialize data for device that supports multiple LUNs.\r
+ // EFI_SUCCESS is returned if at least 1 LUN is initialized successfully.\r
//\r
- Status = UsbMassInitMultiLun(This, Controller, Transport, Context, DevicePath, MaxLun);\r
+ Status = UsbMassInitMultiLun (This, Controller, Transport, Context, DevicePath, MaxLun);\r
if (EFI_ERROR (Status)) {\r
- gBS->CloseProtocol (\r
- Controller,\r
- &gEfiDevicePathProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
+ gBS->CloseProtocol (\r
+ Controller,\r
+ &gEfiDevicePathProtocolGuid,\r
+ This->DriverBindingHandle,\r
+ Controller\r
+ );\r
+ gBS->CloseProtocol (\r
+ Controller,\r
+ &gEfiUsbIoProtocolGuid,\r
+ This->DriverBindingHandle,\r
+ Controller\r
+ );\r
DEBUG ((EFI_D_ERROR, "USBMassDriverBindingStart: UsbMassInitMultiLun (%r) with Maxlun=%d\n", Status, MaxLun));\r
}\r
}\r
+Exit:\r
+ gBS->RestoreTPL (OldTpl);\r
return Status;\r
}\r
\r
@param ChildHandleBuffer The buffer of children handle.\r
\r
@retval EFI_SUCCESS The driver stopped from controlling the device.\r
+ @retval EFI_DEVICE_ERROR The device could not be stopped due to a device error.\r
+ @retval EFI_UNSUPPORTED Block I/O Protocol is not installed on Controller.\r
@retval Others Failed to stop the driver\r
\r
**/\r
{\r
EFI_STATUS Status;\r
USB_MASS_DEVICE *UsbMass;\r
- EFI_USB_IO_PROTOCOL *UsbIo;\r
+ EFI_USB_IO_PROTOCOL *UsbIo;\r
EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
- UINTN Index;\r
- BOOLEAN AllChildrenStopped;\r
+ UINTN Index;\r
+ BOOLEAN AllChildrenStopped;\r
\r
//\r
- // This a bus driver stop function since multi-lun supported. There are three \r
- // kinds of device handle might be passed, 1st is a handle with devicepath/\r
- // usbio/blockio installed(non-multi-lun), 2nd is a handle with devicepath/\r
- // usbio installed(multi-lun root), 3rd is a handle with devicepath/blockio\r
- // installed(multi-lun).\r
+ // This is a bus driver stop function since multi-lun is supported.\r
+ // There are three kinds of device handles that might be passed:\r
+ // 1st is a handle with USB I/O & Block I/O installed (non-multi-lun)\r
+ // 2nd is a handle with Device Path & USB I/O installed (multi-lun root)\r
+ // 3rd is a handle with Device Path & USB I/O & Block I/O installed (multi-lun).\r
//\r
if (NumberOfChildren == 0) {\r
//\r
Controller,\r
EFI_OPEN_PROTOCOL_GET_PROTOCOL\r
);\r
- \r
+\r
if (EFI_ERROR(Status)) {\r
//\r
- // This is a 2nd type handle(multi-lun root), which only needs close \r
- // devicepath protocol.\r
+ // This is a 2nd type handle(multi-lun root), it needs to close devicepath\r
+ // and usbio protocol.\r
//\r
gBS->CloseProtocol (\r
Controller,\r
This->DriverBindingHandle,\r
Controller\r
);\r
+ gBS->CloseProtocol (\r
+ Controller,\r
+ &gEfiUsbIoProtocolGuid,\r
+ This->DriverBindingHandle,\r
+ Controller\r
+ );\r
DEBUG ((EFI_D_INFO, "Success to stop multi-lun root handle\n"));\r
return EFI_SUCCESS;\r
}\r
- \r
+\r
//\r
- // This is a 1st type handle(non-multi-lun), which only needs uninstall\r
- // blockio protocol, close usbio protocol and free mass device.\r
+ // This is a 1st type handle(non-multi-lun), which only needs to uninstall\r
+ // Block I/O Protocol, close USB I/O Protocol and free mass device.\r
//\r
- UsbMass = USB_MASS_DEVICE_FROM_BLOCKIO (BlockIo);\r
- \r
+ UsbMass = USB_MASS_DEVICE_FROM_BLOCK_IO (BlockIo);\r
+\r
//\r
// Uninstall Block I/O protocol from the device handle,\r
// then call the transport protocol to stop itself.\r
//\r
- Status = gBS->UninstallProtocolInterface (\r
+ Status = gBS->UninstallMultipleProtocolInterfaces (\r
Controller,\r
&gEfiBlockIoProtocolGuid,\r
- &UsbMass->BlockIo\r
+ &UsbMass->BlockIo,\r
+ &gEfiDiskInfoProtocolGuid,\r
+ &UsbMass->DiskInfo,\r
+ NULL\r
);\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
- \r
+\r
gBS->CloseProtocol (\r
Controller,\r
&gEfiUsbIoProtocolGuid,\r
This->DriverBindingHandle,\r
Controller\r
);\r
- \r
- UsbMass->Transport->Fini (UsbMass->Context);\r
- gBS->FreePool (UsbMass);\r
- \r
+\r
+ UsbMass->Transport->CleanUp (UsbMass->Context);\r
+ FreePool (UsbMass);\r
+\r
DEBUG ((EFI_D_INFO, "Success to stop non-multi-lun root handle\n"));\r
return EFI_SUCCESS;\r
- } \r
+ }\r
\r
//\r
// This is a 3rd type handle(multi-lun), which needs uninstall\r
- // blockio and devicepath protocol, close usbio protocol and \r
- // free mass device.\r
+ // Block I/O Protocol and Device Path Protocol, close USB I/O Protocol and\r
+ // free mass device for all children.\r
//\r
AllChildrenStopped = TRUE;\r
\r
);\r
if (EFI_ERROR (Status)) {\r
AllChildrenStopped = FALSE;\r
- DEBUG ((EFI_D_ERROR, "Fail to stop No.%d multi-lun child handle when opening blockio\n", Index));\r
+ DEBUG ((EFI_D_ERROR, "Fail to stop No.%d multi-lun child handle when opening blockio\n", (UINT32)Index));\r
continue;\r
}\r
\r
- UsbMass = USB_MASS_DEVICE_FROM_BLOCKIO (BlockIo);\r
+ UsbMass = USB_MASS_DEVICE_FROM_BLOCK_IO (BlockIo);\r
\r
gBS->CloseProtocol (\r
- Controller,\r
- &gEfiUsbIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- ChildHandleBuffer[Index]\r
- );\r
- \r
+ Controller,\r
+ &gEfiUsbIoProtocolGuid,\r
+ This->DriverBindingHandle,\r
+ ChildHandleBuffer[Index]\r
+ );\r
+\r
Status = gBS->UninstallMultipleProtocolInterfaces (\r
ChildHandleBuffer[Index],\r
&gEfiDevicePathProtocolGuid,\r
UsbMass->DevicePath,\r
&gEfiBlockIoProtocolGuid,\r
&UsbMass->BlockIo,\r
+ &gEfiDiskInfoProtocolGuid,\r
+ &UsbMass->DiskInfo,\r
NULL\r
);\r
- \r
+\r
if (EFI_ERROR (Status)) {\r
//\r
- // Fail to uninstall blockio and devicepath protocol, so re-open usbio by child.\r
+ // Fail to uninstall Block I/O Protocol and Device Path Protocol, so re-open USB I/O Protocol by child.\r
//\r
AllChildrenStopped = FALSE;\r
- DEBUG ((EFI_D_ERROR, "Fail to stop No.%d multi-lun child handle when uninstalling blockio and devicepath\n", Index));\r
- \r
+ DEBUG ((EFI_D_ERROR, "Fail to stop No.%d multi-lun child handle when uninstalling blockio and devicepath\n", (UINT32)Index));\r
+\r
gBS->OpenProtocol (\r
Controller,\r
&gEfiUsbIoProtocolGuid,\r
);\r
} else {\r
//\r
- // Success to stop this multi-lun handle, so go on next child.\r
+ // Succeed to stop this multi-lun handle, so go on with next child.\r
//\r
if (((Index + 1) == NumberOfChildren) && AllChildrenStopped) {\r
- UsbMass->Transport->Fini (UsbMass->Context);\r
+ UsbMass->Transport->CleanUp (UsbMass->Context);\r
}\r
- gBS->FreePool (UsbMass);\r
+ FreePool (UsbMass);\r
}\r
}\r
\r
if (!AllChildrenStopped) {\r
return EFI_DEVICE_ERROR;\r
}\r
- \r
- DEBUG ((EFI_D_INFO, "Success to stop all %d multi-lun children handles\n", NumberOfChildren));\r
+\r
+ DEBUG ((EFI_D_INFO, "Success to stop all %d multi-lun children handles\n", (UINT32) NumberOfChildren));\r
return EFI_SUCCESS;\r
}\r
\r
-EFI_DRIVER_BINDING_PROTOCOL gUSBMassDriverBinding = {\r
- USBMassDriverBindingSupported,\r
- USBMassDriverBindingStart,\r
- USBMassDriverBindingStop,\r
- 0x11,\r
- NULL,\r
- NULL\r
-};\r
-\r
/**\r
- The entry point for the driver, which will install the driver binding and\r
- component name protocol.\r
+ Entrypoint of USB Mass Storage Driver.\r
+\r
+ This function is the entrypoint of USB Mass Storage Driver. It installs Driver Binding\r
+ Protocol together with Component Name Protocols.\r
\r
- @param ImageHandle The image handle of this driver.\r
- @param SystemTable The system table.\r
+ @param ImageHandle The firmware allocated handle for the EFI image.\r
+ @param SystemTable A pointer to the EFI System Table.\r
\r
- @retval EFI_SUCCESS The protocols are installed OK.\r
- @retval Others Failed to install protocols.\r
+ @retval EFI_SUCCESS The entry point is executed successfully.\r
\r
**/\r
EFI_STATUS\r
&gUsbMassStorageComponentName,\r
&gUsbMassStorageComponentName2\r
);\r
+ ASSERT_EFI_ERROR (Status);\r
\r
- return Status;\r
+ return EFI_SUCCESS;\r
}\r
projects / mirror_edk2.git / blobdiff