-/**@file\r
- ISA Floppy Driver\r
- 1. Support two types diskette drive \r
- 1.44M drive and 2.88M drive (and now only support 1.44M)\r
- 2. Support two diskette drives\r
- 3. Use DMA channel 2 to transfer data\r
- 4. Do not use interrupt\r
- 5. Support diskette change line signal and write protect\r
- \r
- Implement the Block IO interface\r
- \r
-Copyright (c) 2006 - 2007, Intel Corporation.<BR>\r
-All rights reserved. This program and the accompanying materials\r
+/** @file\r
+ Implementation of the EFI Block IO Protocol for ISA Floppy driver\r
+\r
+Copyright (c) 2006 - 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
-\r
#include "IsaFloppy.h"\r
\r
+/**\r
+ Reset the Block Device.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param ExtendedVerification Driver may perform diagnostics on reset.\r
+\r
+ @retval EFI_SUCCESS The device was reset.\r
+ @retval EFI_DEVICE_ERROR The device is not functioning properly and could\r
+ not be reset.\r
+**/\r
EFI_STATUS\r
EFIAPI\r
FdcReset (\r
IN EFI_BLOCK_IO_PROTOCOL *This,\r
IN BOOLEAN ExtendedVerification\r
)\r
-/*++\r
- \r
- Routine Description: Reset the Floppy Logic Drive, call the FddReset function \r
- Parameters:\r
- This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface\r
- ExtendedVerification BOOLEAN: Indicate that the driver may perform a more \r
- exhaustive verification operation of the device during \r
- reset, now this par is ignored in this driver \r
- Returns:\r
- EFI_SUCCESS: The Floppy Logic Drive is reset\r
- EFI_DEVICE_ERROR: The Floppy Logic Drive is not functioning correctly \r
- and can not be reset\r
-\r
---*/\r
-// GC_TODO: function comment is missing 'Arguments:'\r
-// GC_TODO: This - add argument and description to function comment\r
-// GC_TODO: ExtendedVerification - add argument and description to function comment\r
{\r
FDC_BLK_IO_DEV *FdcDev;\r
\r
return FddReset (FdcDev);\r
}\r
\r
+/**\r
+ Flush the Block Device.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+\r
+ @retval EFI_SUCCESS All outstanding data was written to the device\r
+ @retval EFI_DEVICE_ERROR The device reported an error while writting back the data\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+\r
+**/\r
EFI_STATUS\r
EFIAPI\r
FddFlushBlocks (\r
IN EFI_BLOCK_IO_PROTOCOL *This\r
)\r
-/*++\r
- \r
- Routine Description: \r
- Parameters:\r
- This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface\r
- Returns:\r
- EFI_SUCCESS: \r
-\r
---*/\r
-// GC_TODO: function comment is missing 'Arguments:'\r
-// GC_TODO: This - add argument and description to function comment\r
{\r
//\r
// Not supported yet\r
return EFI_SUCCESS;\r
}\r
\r
-STATIC\r
+/**\r
+ Common report status code interface.\r
+\r
+ @param This Pointer of FDC_BLK_IO_DEV instance\r
+ @param Read Read or write operation when error occurrs\r
+**/\r
VOID\r
FddReportStatus (\r
IN EFI_BLOCK_IO_PROTOCOL *This,\r
IN BOOLEAN Read\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- This - GC_TODO: add argument description\r
- Read - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
FDC_BLK_IO_DEV *FdcDev;\r
\r
);\r
}\r
\r
+/**\r
+ Read BufferSize bytes from Lba into Buffer.\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param MediaId Id of the media, changes every time the media is replaced.\r
+ @param Lba The starting Logical Block Address to read from\r
+ @param BufferSize Size of Buffer, must be a multiple of device block size.\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 performing the read.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+ @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r
+ @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the 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
EFIAPI\r
FddReadBlocks (\r
IN EFI_BLOCK_IO_PROTOCOL *This,\r
IN UINT32 MediaId,\r
- IN EFI_LBA LBA,\r
+ IN EFI_LBA Lba,\r
IN UINTN BufferSize,\r
OUT VOID *Buffer\r
)\r
-/*++\r
-\r
- Routine Description: Read the requested number of blocks from the device \r
- Parameters:\r
- This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface\r
- MediaId UINT32: The media id that the read request is for \r
- LBA EFI_LBA: The starting logic block address to read from on the device\r
- BufferSize UINTN: The size of the Buffer in bytes\r
- Buffer VOID *: A pointer to the destination buffer for the data\r
- Returns:\r
- EFI_SUCCESS: The data was read correctly from the device\r
- EFI_DEVICE_ERROR:The device reported an error while attempting to perform\r
- the read operation\r
- EFI_NO_MEDIA: There is no media in the device\r
- EFI_MEDIA_CHANGED: The MediaId is not for the current media\r
- EFI_BAD_BUFFER_SIZE: The BufferSize parameter is not a multiple of the \r
- intrinsic block size of the device\r
- EFI_INVALID_PARAMETER:The read request contains LBAs that are not valid, \r
- or the buffer is not on proper alignment \r
-\r
---*/\r
-// GC_TODO: function comment is missing 'Arguments:'\r
-// GC_TODO: This - add argument and description to function comment\r
-// GC_TODO: MediaId - add argument and description to function comment\r
-// GC_TODO: LBA - add argument and description to function comment\r
-// GC_TODO: BufferSize - add argument and description to function comment\r
-// GC_TODO: Buffer - add argument and description to function comment\r
{\r
EFI_STATUS Status;\r
\r
- Status = FddReadWriteBlocks (This, MediaId, LBA, BufferSize, READ, Buffer);\r
+ Status = FddReadWriteBlocks (This, MediaId, Lba, BufferSize, READ, Buffer);\r
\r
if (EFI_ERROR (Status)) {\r
FddReportStatus (This, TRUE);\r
return Status;\r
}\r
\r
+/**\r
+ Write BufferSize bytes from Lba into Buffer.\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. The caller is\r
+ responsible for writing to only legitimate locations.\r
+ @param BufferSize Size of Buffer, must be a multiple of device block size.\r
+ @param Buffer A pointer to the source buffer for the 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_BAD_BUFFER_SIZE The Buffer was not a multiple of the 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
EFIAPI\r
FddWriteBlocks (\r
IN EFI_BLOCK_IO_PROTOCOL *This,\r
IN UINT32 MediaId,\r
- IN EFI_LBA LBA,\r
+ IN EFI_LBA Lba,\r
IN UINTN BufferSize,\r
IN VOID *Buffer\r
)\r
-/*++\r
-\r
- Routine Description: Write a specified number of blocks to the device \r
- Parameters:\r
- This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface\r
- MediaId UINT32: The media id that the write request is for \r
- LBA EFI_LBA: The starting logic block address to be written\r
- BufferSize UINTN: The size in bytes in Buffer\r
- Buffer VOID *: A pointer to the source buffer for the data\r
- Returns :\r
- EFI_SUCCESS: The data were written correctly to the device\r
- EFI_WRITE_PROTECTED: The device can not be written to \r
- EFI_NO_MEDIA: There is no media in the device\r
- EFI_MEDIA_CHANGED: The MediaId is not for the current media\r
- EFI_DEVICE_ERROR: The device reported an error while attempting to perform \r
- the write operation \r
- EFI_BAD_BUFFER_SIZE: The BufferSize parameter is not a multiple of the \r
- intrinsic block size of the device\r
- EFI_INVALID_PARAMETER:The write request contains LBAs that are not valid, \r
- or the buffer is not on proper alignment \r
-\r
---*/\r
-// GC_TODO: function comment is missing 'Arguments:'\r
-// GC_TODO: function comment is missing 'Returns:'\r
-// GC_TODO: This - add argument and description to function comment\r
-// GC_TODO: MediaId - add argument and description to function comment\r
-// GC_TODO: LBA - add argument and description to function comment\r
-// GC_TODO: BufferSize - add argument and description to function comment\r
-// GC_TODO: Buffer - add argument and description to function comment\r
{\r
EFI_STATUS Status;\r
\r
- Status = FddReadWriteBlocks (This, MediaId, LBA, BufferSize, WRITE, Buffer);\r
+ Status = FddReadWriteBlocks (This, MediaId, Lba, BufferSize, WRITE, Buffer);\r
\r
if (EFI_ERROR (Status)) {\r
FddReportStatus (This, FALSE);\r
return Status;\r
}\r
\r
+/**\r
+ Read or Write a number of blocks to floppy disk\r
+\r
+ @param This Indicates a pointer to the calling context.\r
+ @param MediaId Id of the media, changes every time the media is replaced.\r
+ @param Lba The starting Logical Block Address to read from\r
+ @param BufferSize Size of Buffer, must be a multiple of device block size.\r
+ @param Operation Specifies the read or write operation.\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 performing the read.\r
+ @retval EFI_NO_MEDIA There is no media in the device.\r
+ @retval EFI_MEDIA_CHANGED The MediaId does not matched the current device.\r
+ @retval EFI_BAD_BUFFER_SIZE The Buffer was not a multiple of the 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
+ @retval EFI_WRITE_PROTECTED The device can not be written to.\r
+\r
+**/\r
EFI_STATUS\r
FddReadWriteBlocks (\r
IN EFI_BLOCK_IO_PROTOCOL *This,\r
IN UINT32 MediaId,\r
- IN EFI_LBA LBA,\r
+ IN EFI_LBA Lba,\r
IN UINTN BufferSize,\r
IN BOOLEAN Operation,\r
OUT VOID *Buffer\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- This - GC_TODO: add argument description\r
- MediaId - GC_TODO: add argument description\r
- LBA - GC_TODO: add argument description\r
- BufferSize - GC_TODO: add argument description\r
- Operation - GC_TODO: add argument description\r
- Buffer - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- EFI_INVALID_PARAMETER - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_NO_MEDIA - GC_TODO: Add description for return value\r
- EFI_MEDIA_CHANGED - GC_TODO: Add description for return value\r
- EFI_WRITE_PROTECTED - GC_TODO: Add description for return value\r
- EFI_BAD_BUFFER_SIZE - GC_TODO: Add description for return value\r
- EFI_INVALID_PARAMETER - GC_TODO: Add description for return value\r
- EFI_INVALID_PARAMETER - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_DEVICE_ERROR - GC_TODO: Add description for return value\r
- EFI_SUCCESS - GC_TODO: Add description for return value\r
-\r
---*/\r
{\r
EFI_BLOCK_IO_MEDIA *Media;\r
FDC_BLK_IO_DEV *FdcDev;\r
UINTN NumberOfBlocks;\r
UINTN BlockCount;\r
EFI_STATUS Status;\r
- //\r
- // EFI_STATUS CacheStatus;\r
- //\r
- EFI_LBA LBA0;\r
+ EFI_LBA Lba0;\r
UINT8 *Pointer;\r
\r
//\r
FdcDev = FDD_BLK_IO_FROM_THIS (This);\r
\r
if (Operation == WRITE) {\r
- if (LBA == 0) {\r
+ if (Lba == 0) {\r
FdcFreeCache (FdcDev);\r
}\r
}\r
- //\r
- // Check the Parameter is valid\r
- //\r
- if (Buffer == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
\r
- if (BufferSize == 0) {\r
- return EFI_SUCCESS;\r
- }\r
//\r
// Set the drive motor on\r
//\r
if (!(Media->MediaPresent)) {\r
MotorOff (FdcDev);\r
FdcFreeCache (FdcDev);\r
-\r
- /*\r
- if (FdcDev->Cache) {\r
- gBS->FreePool (FdcDev->Cache);\r
- FdcDev->Cache = NULL;\r
- }\r
-*/\r
return EFI_NO_MEDIA;\r
}\r
//\r
return EFI_MEDIA_CHANGED;\r
}\r
\r
+ if (BufferSize == 0) {\r
+ MotorOff (FdcDev);\r
+ return EFI_SUCCESS;\r
+ }\r
+\r
if (Operation == WRITE) {\r
if (Media->ReadOnly) {\r
MotorOff (FdcDev);\r
//\r
// Check the parameters for this read/write operation\r
//\r
+ if (Buffer == NULL) {\r
+ MotorOff (FdcDev);\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
if (BufferSize % BlockSize != 0) {\r
MotorOff (FdcDev);\r
return EFI_BAD_BUFFER_SIZE;\r
}\r
\r
- if (LBA > Media->LastBlock) {\r
+ if (Lba > Media->LastBlock) {\r
MotorOff (FdcDev);\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- if (((BufferSize / BlockSize) + LBA - 1) > Media->LastBlock) {\r
+ if (((BufferSize / BlockSize) + Lba - 1) > Media->LastBlock) {\r
MotorOff (FdcDev);\r
return EFI_INVALID_PARAMETER;\r
}\r
//\r
// See if the data that is being read is already in the cache\r
//\r
- if (FdcDev->Cache) {\r
- if (LBA == 0 && BufferSize == BlockSize) {\r
+ if (FdcDev->Cache != NULL) {\r
+ if (Lba == 0 && BufferSize == BlockSize) {\r
MotorOff (FdcDev);\r
CopyMem ((UINT8 *) Buffer, (UINT8 *) FdcDev->Cache, BlockSize);\r
return EFI_SUCCESS;\r
}\r
\r
NumberOfBlocks = BufferSize / BlockSize;\r
- LBA0 = LBA;\r
+ Lba0 = Lba;\r
Pointer = Buffer;\r
\r
//\r
// read blocks in the same cylinder.\r
// in a cylinder , there are 18 * 2 = 36 blocks\r
//\r
- BlockCount = GetTransferBlockCount (FdcDev, LBA, NumberOfBlocks);\r
+ BlockCount = GetTransferBlockCount (FdcDev, Lba, NumberOfBlocks);\r
while ((BlockCount != 0) && !EFI_ERROR (Status)) {\r
- Status = ReadWriteDataSector (FdcDev, Buffer, LBA, BlockCount, Operation);\r
+ Status = ReadWriteDataSector (FdcDev, Buffer, Lba, BlockCount, Operation);\r
if (EFI_ERROR (Status)) {\r
MotorOff (FdcDev);\r
FddReset (FdcDev);\r
return EFI_DEVICE_ERROR;\r
}\r
\r
- LBA += BlockCount;\r
+ Lba += BlockCount;\r
NumberOfBlocks -= BlockCount;\r
Buffer = (VOID *) ((UINTN) Buffer + BlockCount * BlockSize);\r
- BlockCount = GetTransferBlockCount (FdcDev, LBA, NumberOfBlocks);\r
+ BlockCount = GetTransferBlockCount (FdcDev, Lba, NumberOfBlocks);\r
}\r
\r
Buffer = Pointer;\r
//\r
// Cache the data read\r
//\r
- if (LBA0 == 0 && !FdcDev->Cache) {\r
+ if (Lba0 == 0 && FdcDev->Cache == NULL) {\r
FdcDev->Cache = AllocateCopyPool (BlockSize, Buffer);\r
}\r
}\r
\r
}\r
\r
+/**\r
+ Free cache for a floppy disk.\r
+\r
+ @param FdcDev A Pointer to FDC_BLK_IO_DEV instance\r
+\r
+**/\r
VOID\r
FdcFreeCache (\r
- IN FDC_BLK_IO_DEV *FdcDev\r
+ IN FDC_BLK_IO_DEV *FdcDev\r
)\r
-/*++\r
-\r
-Routine Description:\r
-\r
- GC_TODO: Add function description\r
-\r
-Arguments:\r
-\r
- FdcDev - GC_TODO: add argument description\r
-\r
-Returns:\r
-\r
- GC_TODO: add return values\r
-\r
---*/\r
{\r
- if (FdcDev->Cache) {\r
- gBS->FreePool (FdcDev->Cache);\r
+ if (FdcDev->Cache != NULL) {\r
+ FreePool (FdcDev->Cache);\r
FdcDev->Cache = NULL;\r
}\r
}\r
projects / mirror_edk2.git / blobdiff