📄 hardware.h
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/*
* ReactOS Floppy Driver
* Copyright (C) 2004, Vizzini (vizzini@plasmic.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* PROJECT: ReactOS Floppy Driver
* FILE: hardware.h
* PURPOSE: Header for FDC control routines
* PROGRAMMER: Vizzini (vizzini@plasmic.com)
* REVISIONS:
* 15-Feb-2004 vizzini - Created
*
* NOTES:
* - Baesd on http://www.nondot.org/sabre/os/files/Disk/FLOPPY.TXT
* - Some information taken from Intel 82077AA data sheet (order #290166-007)
* - Some definitions are PS/2-Specific; others include the original NEC PD765
* - Other information gathered from the comments in the NT 3.5 floppy driver
*
* TODO:
* - Convert these numbers to 100% absolute values; eliminate bit positions
* in favor of shifts or bitfields
*/
#define FLOPPY_DEFAULT_IRQ 0x6
#define FDC_PORT_BYTES 0x8
/* Register offsets from base address (usually 0x3f8) */
#define STATUS_REGISTER_A 0x0 /* Read; PS/2 Only */
#define STATUS_REGISTER_B 0x1 /* Read; PS/2 Only */
#define DIGITAL_OUTPUT_REGISTER 0x2 /* Read/Write */
#define TAPE_DRIVE_REGISTER 0x3 /* Read/Write */
#define MAIN_STATUS_REGISTER 0x4 /* Read */
#define DATA_RATE_SELECT_REGISTER 0x4 /* Write */
#define FIFO 0x5 /* Read/Write */
#define RESERVED_REGISTER 0x6 /* Reserved */
#define DIGITAL_INPUT_REGISTER 0x7 /* Read; PS/2 Only */
#define CONFIGURATION_CONTROL_REGISTER 0x7 /* Write; PS/2 Only */
/* STATUS_REGISTER_A */
#define DSRA_DIRECTION 0x1
#define DSRA_WRITE_PROTECT 0x2
#define DSRA_INDEX 0x4
#define DSRA_HEAD_1_SELECT 0x8
#define DSRA_TRACK_0 0x10
#define DSRA_STEP 0x20
#define DSRA_SECOND_DRIVE_INSTALLED 0x40
#define DSRA_INTERRUPT_PENDING 0x80
/* STATUS_REGISTER_B */
#define DSRB_MOTOR_ENABLE_0 0x1
#define DSRB_MOTOR_ENABLE_1 0x2
#define DSRB_WRITE_ENABLE 0x4
#define DSRB_READ_DATA 0x8
#define DSRB_WRTITE_DATA 0x10
#define DSRB_DRIVE_SELECT 0x20
/* DIGITAL_OUTPUT_REGISTER */
#define DOR_FLOPPY_DRIVE_SELECT 0x3 /* Covers 2 bits, defined below */
#define DOR_FDC_ENABLE 0x4 /* from the website */
#define DOR_RESET 0x4 /* from the Intel guide; 0 = resetting, 1 = enabled */
#define DOR_DMA_IO_INTERFACE_ENABLE 0x8 /* Reserved on PS/2 */
#define DOR_FLOPPY_MOTOR_ON_A 0x10
#define DOR_FLOPPY_MOTOR_ON_B 0x20
#define DOR_FLOPPY_MOTOR_ON_C 0x40 /* Reserved on PS/2 */
#define DOR_FLOPPY_MOTOR_ON_D 0x80 /* Reserved on PS/2 */
/* DOR_FLOPPY_DRIVE_SELECT */
#define DOR_FLOPPY_DRIVE_SELECT_A 0x0
#define DOR_FLOPPY_DRIVE_SELECT_B 0x1
#define DOR_FLOPPY_DRIVE_SELECT_C 0x2 /* Reserved on PS/2 */
#define DOR_FLOPPY_DRIVE_SELECT_D 0x3 /* Reserved on PS/2 */
/* MAIN_STATUS_REGISTER */
#define MSR_FLOPPY_BUSY_0 0x1
#define MSR_FLOPPY_BUSY_1 0x2
#define MSR_FLOPPY_BUSY_2 0x4 /* Reserved on PS/2 */
#define MSR_FLOPPY_BUSY_3 0x8 /* Reserved on PS/2 */
#define MSR_READ_WRITE_IN_PROGRESS 0x10
#define MSR_NON_DMA_MODE 0x20
#define MSR_IO_DIRECTION 0x40 /* Determines meaning of Command Status Registers */
#define MSR_DATA_REG_READY_FOR_IO 0x80
/* DATA_RATE_SELECT_REGISTER */
#define DRSR_DSEL 0x3 /* covers two bits as defined below */
#define DRSR_PRECOMP 0x1c /* covers three bits as defined below */
#define DRSR_MBZ 0x20
#define DRSR_POWER_DOWN 0x40
#define DRSR_SW_RESET 0x80
/* DRSR_DSEL */
#define DRSR_DSEL_500KBPS 0x0
#define DRSR_DSEL_300KBPS 0x1
#define DRSR_DSEL_250KBPS 0x2
#define DRSR_DSEL_1MBPS 0x3
/* STATUS_REGISTER_0 */
#define SR0_UNIT_SELECTED_AT_INTERRUPT 0x3 /* Covers two bits as defined below */
#define SR0_HEAD_NUMBER_AT_INTERRUPT 0x4 /* Values defined below */
#define SR0_NOT_READY_ON_READ_WRITE 0x8 /* Unused in PS/2 */
#define SR0_SS_ACCESS_TO_HEAD_1 0x8 /* Unused in PS/2 */
#define SR0_EQUIPMENT_CHECK 0x10
#define SR0_SEEK_COMPLETE 0x20
#define SR0_LAST_COMMAND_STATUS 0xC0 /* Covers two bits as defined below */
/* SR0_UNIT_SELECTED_AT_INTERRUPT */
#define SR0_UNIT_SELECTED_A 0x0
#define SR0_UNIT_SELECTED_B 0x1
#define SR0_UNIT_SELECTED_C 0x2
#define SR0_UNIT_SELECTED_D 0x3
#define SR0_PS2_UNIT_SELECTED_A 0x1 /* PS/2 uses only two drives: A = 01b B = 10b */
#define SR0_PST_UNIT_SELECTED_B 0x2
/* SR0_HEAD_NUMBER_AT_INTERRUPT */
#define SR0_HEAD_0 0x0
#define SR0_HEAD_1 0x1
/* SR0_LAST_COMMAND_STATUS */
#define SR0_LCS_SUCCESS 0x0
#define SR0_LCS_TERMINATED_ABNORMALLY 0x40
#define SR0_LCS_INVALID_COMMAND_ISSUED 0x80
#define SR0_LCS_READY_SIGNAL_CHANGED 0xc0 /* Reserved on PS/2; a/k/a abnormal termination due to polling */
/* STATUS_REGISTER_1 */
#define SR1_CANNOT_FIND_ID_ADDRESS 0x1 /* Mimics SR2_WRONG_CYLINDER_DETECTED */
#define SR1_WRITE_PROTECT_DETECTED 0x2
#define SR1_CANNOT_FIND_SECTOR_ID 0x4
#define SR1_OVERRUN 0x10
#define SR1_CRC_ERROR 0x20
#define SR1_END_OF_CYLINDER 0x80
/* STATUS_REGISTER_2 */
#define SR2_MISSING_ADDRESS_MARK 0x1
#define SR2_BAD_CYLINDER 0x2
#define SR2_SCAN_COMMAND_FAILED 0x4
#define SR2_SCAN_COMMAND_EQUAL 0x8
#define SR2_WRONG_CYLINDER_DETECTED 0x10 /* Mimics SR1_CANNOT_FIND_ID_ADDRESS */
#define SR2_CRC_ERROR_IN_SECTOR_DATA 0x20
#define SR2_SECTOR_WITH_DELETED_DATA 0x40
/* STATUS_REGISTER_3 */
#define SR3_UNIT_SELECTED 0x3 /* Covers two bits; defined below */
#define SR3_SIDE_HEAD_SELECT_STATUS 0x4 /* Values defined below */
#define SR3_TWO_SIDED_STATUS_SIGNAL 0x8
#define SR3_TRACK_ZERO_STATUS_SIGNAL 0x10
#define SR3_READY_STATUS_SIGNAL 0x20
#define SR3_WRITE_PROTECT_STATUS_SIGNAL 0x40
#define SR3_FAULT_STATUS_SIGNAL 0x80
/* SR3_UNIT_SELECTED */
#define SR3_UNIT_SELECTED_A 0x0
#define SR3_UNIT_SELECTED_B 0x1
#define SR3_UNIT_SELECTED_C 0x2
#define SR3_UNIT_SELECTED_D 0x3
/* SR3_SIDE_HEAD_SELECT_STATUS */
#define SR3_SHSS_HEAD_0 0x0
#define SR3_SHSS_HEAD_1 0x1
/* DIGITAL_INPUT_REGISTER */
#define DIR_HIGH_DENSITY_SELECT 0x1
#define DIR_DISKETTE_CHANGE 0x80
/* CONFIGURATION_CONTROL_REGISTER */
#define CCR_DRC 0x3 /* Covers two bits, defined below */
#define CCR_DRC_0 0x1
#define CCR_DRC_1 0x2
/* CCR_DRC */
#define CCR_DRC_500000 0x0
#define CCR_DRC_250000 0x2
/* Commands */
#define COMMAND_READ_TRACK 0x2
#define COMMAND_SPECIFY 0x3
#define COMMAND_SENSE_DRIVE_STATUS 0x4
#define COMMAND_WRITE_DATA 0x5
#define COMMAND_READ_DATA 0x6
#define COMMAND_RECALIBRATE 0x7
#define COMMAND_SENSE_INTERRUPT_STATUS 0x8
#define COMMAND_WRITE_DELETED_DATA 0x9
#define COMMAND_READ_ID 0xA
#define COMMAND_READ_DELETED_DATA 0xC
#define COMMAND_FORMAT_TRACK 0xD
#define COMMAND_SEEK 0xF
#define COMMAND_VERSION 0x10
#define COMMAND_SCAN_EQUAL 0x11
#define COMMAND_CONFIGURE 0x13
#define COMMAND_SCAN_LOW_OR_EQUAL 0x19
#define COMMAND_SCAN_HIGH_OR_EQUAL 0x1D
/* COMMAND_READ_DATA constants */
#define READ_DATA_DS0 0x1
#define READ_DATA_DS1 0x2
#define READ_DATA_HDS 0x4
#define READ_DATA_SK 0x20
#define READ_DATA_MFM 0x40
#define READ_DATA_MT 0x80
/* COMMAND_READ_ID constants */
#define READ_ID_MFM 0x40
/* COMMAND_SPECIFY constants */
#define SPECIFY_HLT_1M 0x10 /* 16ms; based on intel data sheet */
#define SPECIFY_HLT_500K 0x8 /* 16ms; based on intel data sheet */
#define SPECIFY_HLT_300K 0x6 /* 16ms; based on intel data sheet */
#define SPECIFY_HLT_250K 0x4 /* 16ms; based on intel data sheet */
#define SPECIFY_HUT_1M 0x0 /* Need to figure out these eight values; 0 is max */
#define SPECIFY_HUT_500K 0x0
#define SPECIFY_HUT_300K 0x0
#define SPECIFY_HUT_250K 0x0
#define SPECIFY_SRT_1M 0x0
#define SPECIFY_SRT_500K 0x0
#define SPECIFY_SRT_300K 0x0
#define SPECIFY_SRT_250K 0x0
/* Command byte 1 constants */
#define COMMAND_UNIT_SELECT 0x3 /* Covers two bits; defined below */
#define COMMAND_UNIT_SELECT_0 0x1
#define COMMAND_UNIT_SELECT_1 0x2
#define COMMAND_HEAD_NUMBER 0x4
#define COMMAND_HEAD_NUMBER_SHIFT 0x2
/* COMMAND_VERSION */
#define VERSION_ENHANCED 0x90
/* COMMAND_UNIT_SELECT */
#define CUS_UNIT_0 0x0
#define CUS_UNIT_1 0x1
/* COMMAND_CONFIGURE constants */
#define CONFIGURE_FIFOTHR 0xf
#define CONFIGURE_POLL 0x10
#define CONFIGURE_EFIFO 0x20
#define CONFIGURE_EIS 0x40
#define CONFIGURE_PRETRK 0xff
/* Command Head Number Constants */
#define COMMAND_HEAD_0 0x0
#define COMMAND_HEAD_1 0x1
/* Bytes per sector constants */
#define HW_128_BYTES_PER_SECTOR 0x0
#define HW_256_BYTES_PER_SECTOR 0x1
#define HW_512_BYTES_PER_SECTOR 0x2
#define HW_1024_BYTES_PER_SECTOR 0x3
/*
* FUNCTIONS
*/
NTSTATUS NTAPI HwTurnOnMotor(PDRIVE_INFO DriveInfo);
NTSTATUS NTAPI HwSenseDriveStatus(PDRIVE_INFO DriveInfo);
NTSTATUS NTAPI HwReadWriteData(PCONTROLLER_INFO ControllerInfo,
BOOLEAN Read,
UCHAR Unit,
UCHAR Cylinder,
UCHAR Head,
UCHAR Sector,
UCHAR BytesPerSector,
UCHAR EndOfTrack,
UCHAR Gap3Length,
UCHAR DataLength);
NTSTATUS NTAPI HwRecalibrate(PDRIVE_INFO DriveInfo);
NTSTATUS NTAPI HwSenseInterruptStatus(PCONTROLLER_INFO ControllerInfo);
NTSTATUS NTAPI HwReadId(PDRIVE_INFO DriveInfo,
UCHAR Head);
NTSTATUS NTAPI HwFormatTrack(PCONTROLLER_INFO ControllerInfo,
UCHAR Unit,
UCHAR Head,
UCHAR BytesPerSector,
UCHAR SectorsPerTrack,
UCHAR Gap3Length,
UCHAR FillerPattern);
NTSTATUS NTAPI HwSeek(PDRIVE_INFO DriveInfo,
UCHAR Cylinder);
NTSTATUS NTAPI HwReadWriteResult(PCONTROLLER_INFO ControllerInfo);
NTSTATUS NTAPI HwGetVersion(PCONTROLLER_INFO ControllerInfo);
NTSTATUS NTAPI HwConfigure(PCONTROLLER_INFO ControllerInfo,
BOOLEAN EIS,
BOOLEAN EFIFO,
BOOLEAN POLL,
UCHAR FIFOTHR,
UCHAR PRETRK) ;
NTSTATUS NTAPI HwRecalibrateResult(PCONTROLLER_INFO ControllerInfo);
NTSTATUS NTAPI HwDiskChanged(PDRIVE_INFO DriveInfo,
PBOOLEAN DiskChanged);
NTSTATUS NTAPI HwSenseDriveStatusResult(PCONTROLLER_INFO ControllerInfo,
PUCHAR Status);
NTSTATUS NTAPI HwSpecify(PCONTROLLER_INFO ControllerInfo,
UCHAR HeadLoadTime,
UCHAR HeadUnloadTime,
UCHAR StepRateTime,
BOOLEAN NonDma);
NTSTATUS NTAPI HwReadIdResult(PCONTROLLER_INFO ControllerInfo,
PUCHAR CurCylinder,
PUCHAR CurHead);
NTSTATUS NTAPI HwSetDataRate(PCONTROLLER_INFO ControllerInfo,
UCHAR DataRate);
NTSTATUS NTAPI HwReset(PCONTROLLER_INFO Controller);
NTSTATUS NTAPI HwPowerOff(PCONTROLLER_INFO ControllerInfo);
VOID NTAPI HwDumpRegisters(PCONTROLLER_INFO ControllerInfo);
NTSTATUS NTAPI HwTurnOffMotor(PCONTROLLER_INFO ControllerInfo);
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