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audk/IntelFrameworkModulePkg/Bus/Isa/IsaFloppyDxe/IsaFloppy.h

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/**@file
Include for ISA Floppy Driver
Define the data structure and so on
Copyright (c) 2006 - 2007, Intel Corporation.<BR>
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.
**/
#ifndef _ISA_FLOPPY_H
#define _ISA_FLOPPY_H
#include <PiDxe.h>
#include <FrameworkPei.h>
#include <Protocol/BlockIo.h>
#include <Protocol/IsaIo.h>
#include <Protocol/DevicePath.h>
#include <Library/TimerLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiDriverEntryPoint.h>
#include <Library/BaseLib.h>
#include <Library/UefiLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/ReportStatusCodeLib.h>
//
// Driver Binding Externs
//
extern EFI_DRIVER_BINDING_PROTOCOL gFdcControllerDriver;
extern EFI_COMPONENT_NAME_PROTOCOL gIsaFloppyComponentName;
extern EFI_COMPONENT_NAME2_PROTOCOL gIsaFloppyComponentName2;
//
// define some value
//
#define STALL_1_SECOND 1000000
#define STALL_1_MSECOND 1000
#define DATA_IN 1
#define DATA_OUT 0
#define READ 0
#define WRITE 1
//
// Internal Data Structures
//
#define FDC_BLK_IO_DEV_SIGNATURE EFI_SIGNATURE_32 ('F', 'B', 'I', 'O')
#define FLOPPY_CONTROLLER_CONTEXT_SIGNATURE EFI_SIGNATURE_32 ('F', 'D', 'C', 'C')
typedef enum {
FDC_DISK0 = 0,
FDC_DISK1 = 1,
FDC_MAX_DISK= 2
} EFI_FDC_DISK;
typedef struct {
UINT32 Signature;
LIST_ENTRY Link;
BOOLEAN FddResetPerformed;
EFI_STATUS FddResetStatus;
BOOLEAN NeedRecalibrate;
UINT8 NumberOfDrive;
UINT16 BaseAddress;
} FLOPPY_CONTROLLER_CONTEXT;
typedef struct {
UINTN Signature;
EFI_HANDLE Handle;
EFI_BLOCK_IO_PROTOCOL BlkIo;
EFI_BLOCK_IO_MEDIA BlkMedia;
EFI_ISA_IO_PROTOCOL *IsaIo;
UINT16 BaseAddress;
EFI_FDC_DISK Disk;
UINT8 PresentCylinderNumber;
UINT8 *Cache;
EFI_EVENT Event;
EFI_UNICODE_STRING_TABLE *ControllerNameTable;
FLOPPY_CONTROLLER_CONTEXT *ControllerState;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
} FDC_BLK_IO_DEV;
#include "ComponentName.h"
#define FDD_BLK_IO_FROM_THIS(a) CR (a, FDC_BLK_IO_DEV, BlkIo, FDC_BLK_IO_DEV_SIGNATURE)
#define FLOPPY_CONTROLLER_FROM_LIST_ENTRY(a) \
CR (a, \
FLOPPY_CONTROLLER_CONTEXT, \
Link, \
FLOPPY_CONTROLLER_CONTEXT_SIGNATURE \
)
#define DISK_1440K_EOT 0x12
#define DISK_1440K_GPL 0x1b
#define DISK_1440K_DTL 0xff
#define DISK_1440K_NUMBER 0x02
#define DISK_1440K_MAXTRACKNUM 0x4f
#define DISK_1440K_BYTEPERSECTOR 512
typedef struct {
UINT8 CommandCode;
UINT8 DiskHeadSel;
UINT8 Cylinder;
UINT8 Head;
UINT8 Sector;
UINT8 Number;
UINT8 EndOfTrack;
UINT8 GapLength;
UINT8 DataLength;
} FDD_COMMAND_PACKET1;
typedef struct {
UINT8 CommandCode;
UINT8 DiskHeadSel;
} FDD_COMMAND_PACKET2;
typedef struct {
UINT8 CommandCode;
UINT8 SrtHut;
UINT8 HltNd;
} FDD_SPECIFY_CMD;
typedef struct {
UINT8 CommandCode;
UINT8 DiskHeadSel;
UINT8 NewCylinder;
} FDD_SEEK_CMD;
typedef struct {
UINT8 CommandCode;
UINT8 DiskHeadSel;
UINT8 Cylinder;
UINT8 Head;
UINT8 Sector;
UINT8 EndOfTrack;
UINT8 GapLength;
UINT8 ScanTestPause;
} FDD_SCAN_CMD;
typedef struct {
UINT8 Status0;
UINT8 Status1;
UINT8 Status2;
UINT8 C;
UINT8 H;
UINT8 S;
UINT8 Number;
} FDD_RESULT_PACKET;
//
// FDC Registers
//
//
// 0x3F2 Digital Output Register
//
#define FDC_REGISTER_DOR 2
//
// 0x3F4 Main Status Register
//
#define FDC_REGISTER_MSR 4
//
// 0x3F5 Data Register
//
#define FDC_REGISTER_DTR 5
//
// 0x3F7 Configuration Control Register(data rate select)
//
#define FDC_REGISTER_CCR 7
//
// 0x3F7 Digital Input Register(diskchange)
//
#define FDC_REGISTER_DIR 7
//
// FDC Register Bit Definitions
//
//
// Digital Out Register(WO)
//
//
// Select Drive: 0=A 1=B
//
#define SELECT_DRV BIT0
//
// Reset FDC
//
#define RESET_FDC BIT2
//
// Enable Int & DMA
//
#define INT_DMA_ENABLE BIT3
//
// Turn On Drive A Motor
//
#define DRVA_MOTOR_ON BIT4
//
// Turn On Drive B Motor
//
#define DRVB_MOTOR_ON BIT5
//
// Main Status Register(RO)
//
//
// Drive A Busy
//
#define MSR_DAB BIT0
//
// Drive B Busy
//
#define MSR_DBB BIT1
//
// FDC Busy
//
#define MSR_CB BIT4
//
// Non-DMA Mode
//
#define MSR_NDM BIT5
//
// Data Input/Output
//
#define MSR_DIO BIT6
//
// Request For Master
//
#define MSR_RQM BIT7
//
// Configuration Control Register(WO)
//
//
// Data Rate select
//
#define CCR_DRC (BIT0 | BIT1)
//
// Digital Input Register(RO)
//
//
// Disk change line
//
#define DIR_DCL BIT7
//
// #define CCR_DCL BIT7 // Diskette change
//
// 500K
//
#define DRC_500KBS 0x0
//
// 300K
//
#define DRC_300KBS 0x01
//
// 250K
//
#define DRC_250KBS 0x02
//
// FDC Command Code
//
#define READ_DATA_CMD 0x06
#define WRITE_DATA_CMD 0x05
#define WRITE_DEL_DATA_CMD 0x09
#define READ_DEL_DATA_CMD 0x0C
#define READ_TRACK_CMD 0x02
#define READ_ID_CMD 0x0A
#define FORMAT_TRACK_CMD 0x0D
#define SCAN_EQU_CMD 0x11
#define SCAN_LOW_EQU_CMD 0x19
#define SCAN_HIGH_EQU_CMD 0x1D
#define SEEK_CMD 0x0F
#define RECALIBRATE_CMD 0x07
#define SENSE_INT_STATUS_CMD 0x08
#define SPECIFY_CMD 0x03
#define SENSE_DRV_STATUS_CMD 0x04
//
// CMD_MT: Multi_Track Selector
// when set , this flag selects the multi-track operating mode.
// In this mode, the FDC treats a complete cylinder under head0 and 1
// as a single track
//
#define CMD_MT BIT7
//
// CMD_MFM: MFM/FM Mode Selector
// A one selects the double density(MFM) mode
// A zero selects single density (FM) mode
//
#define CMD_MFM BIT6
//
// CMD_SK: Skip Flag
// When set to 1, sectors containing a deleted data address mark will
// automatically be skipped during the execution of Read Data.
// When set to 0, the sector is read or written the same as the read and
// write commands.
//
#define CMD_SK BIT5
//
// FDC Status Register Bit Definitions
//
//
// Status Register 0
//
//
// Interrupt Code
//
#define STS0_IC (BIT7 | BIT6)
//
// Seek End: the FDC completed a seek or recalibrate command
//
#define STS0_SE BIT5
//
// Equipment Check
//
#define STS0_EC BIT4
//
// Not Ready(unused), this bit is always 0
//
#define STS0_NR BIT3
//
// Head Address: the current head address
//
#define STS0_HA BIT2
//
// STS0_US1 & STS0_US0: Drive Select(the current selected drive)
//
//
// Unit Select1
//
#define STS0_US1 BIT1
//
// Unit Select0
//
#define STS0_US0 BIT0
//
// Status Register 1
//
//
// End of Cylinder
//
#define STS1_EN BIT7
//
// BIT6 is unused
//
//
// Data Error: The FDC detected a CRC error in either the ID field or
// data field of a sector
//
#define STS1_DE BIT5
//
// Overrun/Underrun: Becomes set if FDC does not receive CPU or DMA service
// within the required time interval
//
#define STS1_OR BIT4
//
// BIT3 is unused
//
//
// No data
//
#define STS1_ND BIT2
//
// Not Writable
//
#define STS1_NW BIT1
//
// Missing Address Mark
//
#define STS1_MA BIT0
//
// Control Mark
//
#define STS2_CM BIT6
//
// Data Error in Data Field: The FDC detected a CRC error in the data field
//
#define STS2_DD BIT5
//
// Wrong Cylinder: The track address from sector ID field is different from
// the track address maintained inside FDC
//
#define STS2_WC BIT4
//
// Bad Cylinder
//
#define STS2_BC BIT1
//
// Missing Address Mark in Data Field
//
#define STS2_MD BIT0
//
// Write Protected
//
#define STS3_WP BIT6
//
// Track 0
//
#define STS3_T0 BIT4
//
// Head Address
//
#define STS3_HD BIT2
//
// STS3_US1 & STS3_US0 : Drive Select
//
#define STS3_US1 BIT1
#define STS3_US0 BIT0
//
// Status Register 0 Interrupt Code Description
//
//
// Normal Termination of Command
//
#define IC_NT 0x0
//
// Abnormal Termination of Command
//
#define IC_AT 0x40
//
// Invalid Command
//
#define IC_IC 0x80
//
// Abnormal Termination caused by Polling
//
#define IC_ATRC 0xC0
//
// Global Variables
//
extern EFI_DRIVER_BINDING_PROTOCOL gFdcControllerDriver;
//
// EFI Driver Binding Protocol Functions
//
/**
Test controller is a Floppy Disk Controller
@param This Pointer of EFI_DRIVER_BINDING_PROTOCOL
@param Controller driver's controller
@param RemainingDevicePath children device path
@retval EFI_UNSUPPORTED controller is not floppy disk
@retval EFI_SUCCESS controller is floppy disk
**/
EFI_STATUS
EFIAPI
FdcControllerDriverSupported (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
/**
Create floppy control instance on controller.
@param This Pointer of EFI_DRIVER_BINDING_PROTOCOL
@param Controller driver controller handle
@param RemainingDevicePath Children's device path
@retval whether success to create floppy control instance.
**/
EFI_STATUS
EFIAPI
FdcControllerDriverStart (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath
);
/**
Stop this driver on ControllerHandle. Support stoping any child handles
created by this driver.
@param This Protocol instance pointer.
@param Controller Handle of device to stop driver on
@param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of
children is zero stop the entire bus driver.
@param ChildHandleBuffer List of Child Handles to Stop.
@retval EFI_SUCCESS This driver is removed ControllerHandle
@retval other This driver was not removed from this device
**/
EFI_STATUS
EFIAPI
FdcControllerDriverStop (
IN EFI_DRIVER_BINDING_PROTOCOL *This,
IN EFI_HANDLE Controller,
IN UINTN NumberOfChildren,
IN EFI_HANDLE *ChildHandleBuffer
);
//
// EFI Block I/O Protocol Functions
//
/**
Reset the Floppy Logic Drive, call the FddReset function
@param This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface
@param ExtendedVerification BOOLEAN: Indicate that the driver may perform a more
exhaustive verification operation of the device during
reset, now this par is ignored in this driver
@retval EFI_SUCCESS: The Floppy Logic Drive is reset
@retval EFI_DEVICE_ERROR: The Floppy Logic Drive is not functioning correctly
and can not be reset
**/
EFI_STATUS
EFIAPI
FdcReset (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
);
/**
Flush block via fdd controller
@param This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface
@return EFI_SUCCESS
**/
EFI_STATUS
EFIAPI
FddFlushBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This
);
/**
Read the requested number of blocks from the device
@param This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface
@param MediaId UINT32: The media id that the read request is for
@param LBA EFI_LBA: The starting logic block address to read from on the device
@param BufferSize UINTN: The size of the Buffer in bytes
@param Buffer VOID *: A pointer to the destination buffer for the data
@retval EFI_SUCCESS: The data was read correctly from the device
@retval EFI_DEVICE_ERROR:The device reported an error while attempting to perform
the read operation
@retval EFI_NO_MEDIA: There is no media in the device
@retval EFI_MEDIA_CHANGED: The MediaId is not for the current media
@retval EFI_BAD_BUFFER_SIZE: The BufferSize parameter is not a multiple of the
intrinsic block size of the device
@retval EFI_INVALID_PARAMETER:The read request contains LBAs that are not valid,
or the buffer is not on proper alignment
**/
EFI_STATUS
EFIAPI
FddReadBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
OUT VOID *Buffer
);
/**
Write a specified number of blocks to the device
@param This EFI_BLOCK_IO *: A pointer to the Block I/O protocol interface
@param MediaId UINT32: The media id that the write request is for
@param LBA EFI_LBA: The starting logic block address to be written
@param BufferSize UINTN: The size in bytes in Buffer
@param Buffer VOID *: A pointer to the source buffer for the data
@retval EFI_SUCCESS: The data were written correctly to the device
@retval EFI_WRITE_PROTECTED: The device can not be written to
@retval EFI_NO_MEDIA: There is no media in the device
@retval EFI_MEDIA_CHANGED: The MediaId is not for the current media
@retval EFI_DEVICE_ERROR: The device reported an error while attempting to perform
the write operation
@retval EFI_BAD_BUFFER_SIZE: The BufferSize parameter is not a multiple of the
intrinsic block size of the device
@retval EFI_INVALID_PARAMETER:The write request contains LBAs that are not valid,
or the buffer is not on proper alignment
**/
EFI_STATUS
EFIAPI
FddWriteBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
IN VOID *Buffer
);
//
// Prototypes of internal functions
//
/**
Detect the floppy drive is presented or not
@param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV
@retval EFI_SUCCESS Drive is presented
@retval EFI_NOT_FOUND Drive is not presented
**/
EFI_STATUS
DiscoverFddDevice (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Do recalibrate and see the drive is presented or not
Set the media parameters
@param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV
@return the drive is presented or not
**/
EFI_STATUS
FddIdentify (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Reset the Floppy Logic Drive
@param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV
@retval EFI_SUCCESS: The Floppy Logic Drive is reset
@retval EFI_DEVICE_ERROR: The Floppy Logic Drive is not functioning correctly and
can not be reset
**/
EFI_STATUS
FddReset (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Turn the drive's motor on
The drive's motor must be on before any command can be executed
@param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV
@retval EFI_SUCCESS: Turn the drive's motor on successfully
@retval EFI_DEVICE_ERROR: The drive is busy, so can not turn motor on
@retval EFI_INVALID_PARAMETER: Fail to Set timer(Cancel timer)
**/
EFI_STATUS
MotorOn (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Set a Timer and when Timer goes off, turn the motor off
@param FdcDev FDC_BLK_IO_DEV * : A pointer to the Data Structure FDC_BLK_IO_DEV
@retval EFI_SUCCESS: Set the Timer successfully
@retval EFI_INVALID_PARAMETER: Fail to Set the timer
**/
EFI_STATUS
MotorOff (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Detect the disk in the drive is changed or not
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@retval EFI_SUCCESS: No disk media change
@retval EFI_DEVICE_ERROR: Fail to do the recalibrate or seek operation
@retval EFI_NO_MEDIA: No disk in the drive
@retval EFI_MEDIA_CHANGED: There is a new disk in the drive
**/
EFI_STATUS
DisketChanged (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Do the Specify command, this command sets DMA operation
and the initial values for each of the three internal
times: HUT, SRT and HLT
@param FdcDev Pointer to instance of FDC_BLK_IO_DEV
@retval EFI_SUCCESS: Execute the Specify command successfully
@retval EFI_DEVICE_ERROR: Fail to execute the command
**/
EFI_STATUS
Specify (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Set the head of floppy drive to track 0
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@retval EFI_SUCCESS: Execute the Recalibrate operation successfully
@retval EFI_DEVICE_ERROR: Fail to execute the Recalibrate operation
**/
EFI_STATUS
Recalibrate (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Set the head of floppy drive to the new cylinder
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@param Lba EFI_LBA : The logic block address want to seek
@retval EFI_SUCCESS: Execute the Seek operation successfully
@retval EFI_DEVICE_ERROR: Fail to execute the Seek operation
**/
EFI_STATUS
Seek (
IN FDC_BLK_IO_DEV *FdcDev,
IN EFI_LBA Lba
);
/**
Do the Sense Interrupt Status command, this command
resets the interrupt signal
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@param StatusRegister0 UINT8 *: Be used to save Status Register 0 read from FDC
@param PresentCylinderNumber UINT8 *: Be used to save present cylinder number
read from FDC
@retval EFI_SUCCESS: Execute the Sense Interrupt Status command successfully
@retval EFI_DEVICE_ERROR: Fail to execute the command
**/
EFI_STATUS
SenseIntStatus (
IN FDC_BLK_IO_DEV *FdcDev,
IN OUT UINT8 *StatusRegister0,
IN OUT UINT8 *PresentCylinderNumber
);
/**
Do the Sense Drive Status command
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@param Lba EFI_LBA : Logic block address
@retval EFI_SUCCESS: Execute the Sense Drive Status command successfully
@retval EFI_DEVICE_ERROR: Fail to execute the command
@retval EFI_WRITE_PROTECTED:The disk is write protected
**/
EFI_STATUS
SenseDrvStatus (
IN FDC_BLK_IO_DEV *FdcDev,
IN EFI_LBA Lba
);
/**
Update the disk media properties and if necessary
reinstall Block I/O interface
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@retval EFI_SUCCESS: Do the operation successfully
@retval EFI_DEVICE_ERROR: Fail to the operation
**/
EFI_STATUS
DetectMedia (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Set the data rate and so on
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@retval EFI_SUCCESS success to set the data rate
**/
EFI_STATUS
Setup (
IN FDC_BLK_IO_DEV *FdcDev
);
/**
Read or Write a number of blocks in the same cylinder
@param FdcDev A pointer to Data Structure FDC_BLK_IO_DEV
@param HostAddress device address
@param Lba The starting logic block address to read from on the device
@param NumberOfBlocks The number of block wanted to be read or write
@param Read Operation type: read or write
@retval EFI_SUCCESS Success operate
**/
EFI_STATUS
ReadWriteDataSector (
IN FDC_BLK_IO_DEV *FdcDev,
IN VOID *HostAddress,
IN EFI_LBA Lba,
IN UINTN NumberOfBlocks,
IN BOOLEAN Read
);
/**
Fill in FDD command's parameter
@param FdcDev Pointer to instance of FDC_BLK_IO_DEV
@param Lba The starting logic block address to read from on the device
@param Command FDD command
**/
VOID
FillPara (
IN FDC_BLK_IO_DEV *FdcDev,
IN EFI_LBA Lba,
IN FDD_COMMAND_PACKET1 *Command
);
/**
Read result byte from Data Register of FDC
@param FdcDev Pointer to instance of FDC_BLK_IO_DEV
@param Pointer UINT8 *: Be used to save result byte read from FDC
@retval EFI_SUCCESS: Read result byte from FDC successfully
@retval EFI_DEVICE_ERROR: The FDC is not ready to be read
**/
EFI_STATUS
DataInByte (
IN FDC_BLK_IO_DEV *FdcDev,
IN UINT8 *Pointer
);
/**
Write command byte to Data Register of FDC
@param FdcDev Pointer to instance of FDC_BLK_IO_DEV
@param Pointer Be used to save command byte written to FDC
@retval EFI_SUCCESS: Write command byte to FDC successfully
@retval EFI_DEVICE_ERROR: The FDC is not ready to be written
**/
EFI_STATUS
DataOutByte (
IN FDC_BLK_IO_DEV *FdcDev,
IN UINT8 *Pointer
);
/**
Detect the specified floppy logic drive is busy or
not within a period of time
@param FdcDev Indicate it is drive A or drive B
@param TimeoutInSeconds the time period for waiting
@retval EFI_SUCCESS: The drive and command are not busy
@retval EFI_TIMEOUT: The drive or command is still busy after a period time that
set by TimeoutInSeconds
**/
EFI_STATUS
FddWaitForBSYClear (
IN FDC_BLK_IO_DEV *FdcDev,
IN UINTN TimeoutInSeconds
);
/**
Routine Description: Determine whether FDC is ready to write or read
@param FdcDev Pointer to instance of FDC_BLK_IO_DEV
@param Dio BOOLEAN: Indicate the FDC is waiting to write or read
@param TimeoutInSeconds UINTN: The time period for waiting
@retval EFI_SUCCESS: FDC is ready to write or read
@retval EFI_NOT_READY: FDC is not ready within the specified time period
**/
EFI_STATUS
FddDRQReady (
IN FDC_BLK_IO_DEV *FdcDev,
IN BOOLEAN Dio,
IN UINTN TimeoutInSeconds
);
/**
Set FDC control structure's attribute according to
result
@param Result Point to result structure
@param FdcDev FDC control structure
@retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value
@retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value
@retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value
@retval EFI_SUCCESS - GC_TODO: Add description for return value
**/
EFI_STATUS
CheckResult (
IN FDD_RESULT_PACKET *Result,
IN OUT FDC_BLK_IO_DEV *FdcDev
);
/**
Check the drive status information
@param StatusRegister3 the value of Status Register 3
@retval EFI_SUCCESS The disk is not write protected
@retval EFI_WRITE_PROTECTED: The disk is write protected
**/
EFI_STATUS
CheckStatus3 (
IN UINT8 StatusRegister3
);
/**
Calculate the number of block in the same cylinder
according to LBA
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@param LBA EFI_LBA: The starting logic block address
@param NumberOfBlocks UINTN: The number of blocks
@return The number of blocks in the same cylinder which the starting
logic block address is LBA
**/
UINTN
GetTransferBlockCount (
IN FDC_BLK_IO_DEV *FdcDev,
IN EFI_LBA LBA,
IN UINTN NumberOfBlocks
);
/**
When the Timer(2s) off, turn the drive's motor off
@param Event EFI_EVENT: Event(the timer) whose notification function is being
invoked
@param Context VOID *: Pointer to the notification function's context
**/
VOID
EFIAPI
FddTimerProc (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
Read I/O port for FDC
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@param Offset The offset address of port
**/
UINT8
FdcReadPort (
IN FDC_BLK_IO_DEV *FdcDev,
IN UINT32 Offset
);
/**
Write I/O port for FDC
@param FdcDev FDC_BLK_IO_DEV *: A pointer to Data Structure FDC_BLK_IO_DEV
@param Offset The offset address of port
@param Data Value written to port
**/
VOID
FdcWritePort (
IN FDC_BLK_IO_DEV *FdcDev,
IN UINT32 Offset,
IN UINT8 Data
);
/**
Read or Write a number of blocks to floppy device
@param This Pointer to instance of EFI_BLOCK_IO_PROTOCOL
@param MediaId The media id of read/write request
@param LBA The starting logic block address to read from on the device
@param BufferSize The size of the Buffer in bytes
@param Operation - GC_TODO: add argument description
@param Buffer - GC_TODO: add argument description
@retval EFI_INVALID_PARAMETER - GC_TODO: Add description for return value
@retval EFI_SUCCESS - GC_TODO: Add description for return value
@retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value
@retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value
@retval EFI_NO_MEDIA - GC_TODO: Add description for return value
@retval EFI_MEDIA_CHANGED - GC_TODO: Add description for return value
@retval EFI_WRITE_PROTECTED - GC_TODO: Add description for return value
@retval EFI_BAD_BUFFER_SIZE - GC_TODO: Add description for return value
@retval EFI_INVALID_PARAMETER - GC_TODO: Add description for return value
@retval EFI_INVALID_PARAMETER - GC_TODO: Add description for return value
@retval EFI_SUCCESS - GC_TODO: Add description for return value
@retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value
@retval EFI_DEVICE_ERROR - GC_TODO: Add description for return value
@retval EFI_SUCCESS - GC_TODO: Add description for return value
**/
EFI_STATUS
FddReadWriteBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA LBA,
IN UINTN BufferSize,
IN BOOLEAN Operation,
OUT VOID *Buffer
);
/**
Common interface for free cache
@param FdcDev Pointer of FDC_BLK_IO_DEV instance
**/
VOID
FdcFreeCache (
IN FDC_BLK_IO_DEV *FdcDev
);
#endif
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