/** @file\r
- DiskIo driver that layers it's self on every Block IO protocol in the system.\r
- DiskIo converts a block oriented device to a byte oriented device.\r
+ Master header file for DiskIo driver. It includes the module private defininitions.\r
\r
- Copyright (c) 2006 - 2007, Intel Corporation \r
- All rights reserved. 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
+Copyright (c) 2006 - 2013, 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
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
\r
-#ifndef _DISK_IO_H\r
-#define _DISK_IO_H\r
+#ifndef _DISK_IO_H_\r
+#define _DISK_IO_H_\r
\r
#include <Uefi.h>\r
#include <Protocol/BlockIo.h>\r
+#include <Protocol/BlockIo2.h>\r
+#include <Protocol/DiskIo2.h>\r
#include <Protocol/ComponentName.h>\r
#include <Protocol/DriverBinding.h>\r
#include <Protocol/DiskIo.h>\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/UefiBootServicesTableLib.h>\r
\r
+//\r
+// Pre-allocate an aligned buffer of 64 blocks so very large Disk I/O requests\r
+// will be broken up into 64 * BlockSize chunks to provide better performance\r
+// than allocating an aligned 1 block buffer.\r
+//\r
+#define DATA_BUFFER_BLOCK_NUM 64\r
\r
-#define DISK_IO_PRIVATE_DATA_SIGNATURE EFI_SIGNATURE_32 ('d', 's', 'k', 'I')\r
+#define DISK_IO_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('d', 's', 'k', 'I')\r
+typedef struct {\r
+ UINT32 Signature;\r
\r
-#define DATA_BUFFER_BLOCK_NUM (64)\r
+ EFI_DISK_IO_PROTOCOL DiskIo;\r
+ EFI_DISK_IO2_PROTOCOL DiskIo2;\r
+ EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
+ EFI_BLOCK_IO2_PROTOCOL *BlockIo2;\r
\r
-typedef struct {\r
- UINTN Signature;\r
- EFI_DISK_IO_PROTOCOL DiskIo;\r
- EFI_BLOCK_IO_PROTOCOL *BlockIo;\r
+ UINT8 *SharedWorkingBuffer;\r
+\r
+ EFI_LOCK TaskQueueLock;\r
+ LIST_ENTRY TaskQueue;\r
} DISK_IO_PRIVATE_DATA;\r
+#define DISK_IO_PRIVATE_DATA_FROM_DISK_IO(a) CR (a, DISK_IO_PRIVATE_DATA, DiskIo, DISK_IO_PRIVATE_DATA_SIGNATURE)\r
+#define DISK_IO_PRIVATE_DATA_FROM_DISK_IO2(a) CR (a, DISK_IO_PRIVATE_DATA, DiskIo2, DISK_IO_PRIVATE_DATA_SIGNATURE)\r
\r
-#define DISK_IO_PRIVATE_DATA_FROM_THIS(a) CR (a, DISK_IO_PRIVATE_DATA, DiskIo, DISK_IO_PRIVATE_DATA_SIGNATURE)\r
+#define DISK_IO2_TASK_SIGNATURE SIGNATURE_32 ('d', 'i', 'a', 't')\r
+typedef struct {\r
+ UINT32 Signature;\r
+ LIST_ENTRY Link; /// < link to other task\r
+ LIST_ENTRY Subtasks; /// < header of subtasks\r
+ EFI_DISK_IO2_TOKEN *Token;\r
+ DISK_IO_PRIVATE_DATA *Instance;\r
+} DISK_IO2_TASK;\r
+\r
+#define DISK_IO2_FLUSH_TASK_SIGNATURE SIGNATURE_32 ('d', 'i', 'f', 't')\r
+typedef struct {\r
+ UINT32 Signature;\r
+ EFI_BLOCK_IO2_TOKEN BlockIo2Token;\r
+ EFI_DISK_IO2_TOKEN *Token;\r
+} DISK_IO2_FLUSH_TASK;\r
+\r
+#define DISK_IO_SUBTASK_SIGNATURE SIGNATURE_32 ('d', 'i', 's', 't')\r
+typedef struct {\r
+ //\r
+ // UnderRun: Offset != 0, Length < BlockSize\r
+ // OverRun: Offset == 0, Length < BlockSize\r
+ // Middle: Offset is block aligned, Length is multiple of block size\r
+ //\r
+ UINT32 Signature;\r
+ LIST_ENTRY Link;\r
+ BOOLEAN Write;\r
+ UINT64 Lba;\r
+ UINT32 Offset;\r
+ UINTN Length;\r
+ UINT8 *WorkingBuffer; /// < NULL indicates using "Buffer" directly\r
+ UINT8 *Buffer;\r
+ BOOLEAN Blocking;\r
+\r
+ //\r
+ // Following fields are for DiskIo2\r
+ //\r
+ DISK_IO2_TASK *Task;\r
+ EFI_BLOCK_IO2_TOKEN BlockIo2Token;\r
+} DISK_IO_SUBTASK;\r
\r
//\r
// Global Variables\r
// Prototypes\r
// Driver model protocol interface\r
//\r
+/**\r
+ Test to see if this driver supports ControllerHandle. \r
+\r
+ @param This Protocol instance pointer.\r
+ @param ControllerHandle Handle of device to test\r
+ @param RemainingDevicePath Optional parameter use to pick a specific child\r
+ device to start.\r
+\r
+ @retval EFI_SUCCESS This driver supports this device\r
+ @retval EFI_ALREADY_STARTED This driver is already running on this device\r
+ @retval other This driver does not support this device\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DiskIoDriverBindingSupported (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE ControllerHandle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
+ IN EFI_HANDLE ControllerHandle,\r
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
);\r
\r
+/**\r
+ Start this driver on ControllerHandle by opening a Block IO protocol and\r
+ installing a Disk IO protocol on ControllerHandle.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param ControllerHandle Handle of device to bind driver to\r
+ @param RemainingDevicePath Optional parameter use to pick a specific child\r
+ device to start.\r
+\r
+ @retval EFI_SUCCESS This driver is added to ControllerHandle\r
+ @retval EFI_ALREADY_STARTED This driver is already running on ControllerHandle\r
+ @retval other This driver does not support this device\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DiskIoDriverBindingStart (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE ControllerHandle,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
+ IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
+ IN EFI_HANDLE ControllerHandle,\r
+ IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath OPTIONAL\r
);\r
\r
+/**\r
+ Stop this driver on ControllerHandle by removing Disk IO protocol and closing\r
+ the Block IO protocol on ControllerHandle.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param ControllerHandle Handle of device to stop driver on\r
+ @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r
+ children is zero stop the entire bus driver.\r
+ @param ChildHandleBuffer List of Child Handles to Stop.\r
+\r
+ @retval EFI_SUCCESS This driver is removed ControllerHandle\r
+ @retval other This driver was not removed from this device\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DiskIoDriverBindingStop (\r
//\r
// Disk I/O Protocol Interface\r
//\r
+/**\r
+ Read BufferSize bytes from Offset into Buffer.\r
+ Reads may support reads that are not aligned on\r
+ sector boundaries. There are three cases:\r
+ UnderRun - The first byte is not on a sector boundary or the read request is\r
+ less than a sector in length.\r
+ Aligned - A read of N contiguous sectors.\r
+ OverRun - The last byte is not on a sector boundary.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param MediaId Id of the media, changes every time the media is replaced.\r
+ @param Offset The starting byte offset to read from\r
+ @param BufferSize Size of Buffer\r
+ @param Buffer Buffer containing read data\r
+\r
+ @retval EFI_SUCCESS The data was read correctly from the device.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the read.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+ @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r
+ @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not\r
+ valid for the device.\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DiskIoReadDisk (\r
OUT VOID *Buffer\r
);\r
\r
+/**\r
+ Writes BufferSize bytes from Buffer into Offset.\r
+ Writes may require a read modify write to support writes that are not\r
+ aligned on sector boundaries. There are three cases:\r
+ UnderRun - The first byte is not on a sector boundary or the write request\r
+ is less than a sector in length. Read modify write is required.\r
+ Aligned - A write of N contiguous sectors.\r
+ OverRun - The last byte is not on a sector boundary. Read modified write\r
+ required.\r
+\r
+ @param This Protocol instance pointer.\r
+ @param MediaId Id of the media, changes every time the media is replaced.\r
+ @param Offset The starting byte offset to read from\r
+ @param BufferSize Size of Buffer\r
+ @param Buffer Buffer containing read data\r
+\r
+ @retval EFI_SUCCESS The data was written correctly to the device.\r
+ @retval EFI_WRITE_PROTECTED The device can not be written to.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+ @retval EFI_MEDIA_CHNAGED The MediaId does not matched the current device.\r
+ @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not\r
+ valid for the device.\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
DiskIoWriteDisk (\r
IN VOID *Buffer\r
);\r
\r
+\r
+/**\r
+ Terminate outstanding asynchronous requests to a device.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+\r
+ @retval EFI_SUCCESS All outstanding requests were successfully terminated.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the cancel\r
+ operation.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DiskIo2Cancel (\r
+ IN EFI_DISK_IO2_PROTOCOL *This\r
+ );\r
+\r
+/**\r
+ Reads a specified number of bytes from a device.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param MediaId ID of the medium to be read.\r
+ @param Offset The starting byte offset on the logical block I/O device to read from.\r
+ @param Token A pointer to the token associated with the transaction.\r
+ If this field is NULL, synchronous/blocking IO is performed.\r
+ @param BufferSize The size in bytes of Buffer. The number of bytes to read from the device.\r
+ @param Buffer A pointer to the destination buffer for the data.\r
+ The caller is responsible either having implicit or explicit ownership of the buffer.\r
+\r
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was read correctly from the device.\r
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.\r
+ Event will be signaled upon completion.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write.\r
+ @retval EFI_NO_MEDIA There is no medium in the device.\r
+ @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.\r
+ @retval EFI_INVALID_PARAMETER The read request contains device addresses that are not valid for the device.\r
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DiskIo2ReadDiskEx (\r
+ IN EFI_DISK_IO2_PROTOCOL *This,\r
+ IN UINT32 MediaId,\r
+ IN UINT64 Offset,\r
+ IN OUT EFI_DISK_IO2_TOKEN *Token,\r
+ IN UINTN BufferSize,\r
+ OUT VOID *Buffer\r
+ );\r
+\r
+/**\r
+ Writes a specified number of bytes to a device.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param MediaId ID of the medium to be written.\r
+ @param Offset The starting byte offset on the logical block I/O device to write to.\r
+ @param Token A pointer to the token associated with the transaction.\r
+ If this field is NULL, synchronous/blocking IO is performed.\r
+ @param BufferSize The size in bytes of Buffer. The number of bytes to write to the device.\r
+ @param Buffer A pointer to the buffer containing the data to be written.\r
+\r
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was written correctly to the device.\r
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.\r
+ Event will be signaled upon completion.\r
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write operation.\r
+ @retval EFI_NO_MEDIA There is no medium in the device.\r
+ @retval EFI_MEDIA_CHNAGED The MediaId is not for the current medium.\r
+ @retval EFI_INVALID_PARAMETER The write request contains device addresses that are not valid for the device.\r
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DiskIo2WriteDiskEx (\r
+ IN EFI_DISK_IO2_PROTOCOL *This,\r
+ IN UINT32 MediaId,\r
+ IN UINT64 Offset,\r
+ IN EFI_DISK_IO2_TOKEN *Token,\r
+ IN UINTN BufferSize,\r
+ IN VOID *Buffer\r
+ );\r
+\r
+/**\r
+ Flushes all modified data to the physical device.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param Token A pointer to the token associated with the transaction.\r
+ If this field is NULL, synchronous/blocking IO is performed.\r
+\r
+ @retval EFI_SUCCESS If Event is NULL (blocking I/O): The data was flushed successfully to the device.\r
+ If Event is not NULL (asynchronous I/O): The request was successfully queued for processing.\r
+ Event will be signaled upon completion.\r
+ @retval EFI_WRITE_PROTECTED The device cannot be written to.\r
+ @retval EFI_DEVICE_ERROR The device reported an error while performing the write operation.\r
+ @retval EFI_NO_MEDIA There is no medium in the device.\r
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+DiskIo2FlushDiskEx (\r
+ IN EFI_DISK_IO2_PROTOCOL *This,\r
+ IN OUT EFI_DISK_IO2_TOKEN *Token\r
+ );\r
+\r
//\r
// EFI Component Name Functions\r
//\r
languages specified in SupportedLanguages. The\r
number of languages supported by a driver is up\r
to the driver writer. Language is specified\r
- in RFC 3066 or ISO 639-2 language code format.\r
+ in RFC 4646 or ISO 639-2 language code format.\r
\r
@param DriverName[out] A pointer to the Unicode string to return.\r
This Unicode string is the name of the\r
languages specified in SupportedLanguages. The\r
number of languages supported by a driver is up\r
to the driver writer. Language is specified in\r
- RFC 3066 or ISO 639-2 language code format.\r
+ RFC 4646 or ISO 639-2 language code format.\r
\r
@param ControllerName[out] A pointer to the Unicode string to return.\r
This Unicode string is the name of the\r
driver specified by This was returned in\r
DriverName.\r
\r
- @retval EFI_INVALID_PARAMETER ControllerHandle is not a valid EFI_HANDLE.\r
+ @retval EFI_INVALID_PARAMETER ControllerHandle is NULL.\r
\r
@retval EFI_INVALID_PARAMETER ChildHandle is not NULL and it is not a valid\r
EFI_HANDLE.\r
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