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https://github.com/reactos/reactos.git
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4b34e44782
This should fix some virtual machines and real hardware machine with empty floopy drive not being able to boot ReactOS (stuck while initializing floppy.sys). This fixes a regression introduced in r70746. It could be generalized to other interrupts, floppy controllers not being reliable. For more information: http://wiki.osdev.org/Floppy_Disk_Controller CORE-7935 CORE-12908 CORE-13080
128 lines
4.3 KiB
C
128 lines
4.3 KiB
C
/*
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* ReactOS Floppy Driver
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* Copyright (C) 2004, Vizzini (vizzini@plasmic.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* PROJECT: ReactOS Floppy Driver
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* FILE: floppy.h
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* PURPOSE: Header for Main floppy driver routines
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* PROGRAMMER: Vizzini (vizzini@plasmic.com)
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* REVISIONS:
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* 15-Feb-2004 vizzini - Created
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*/
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#pragma once
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#define MAX_DEVICE_NAME 255
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#define MAX_ARC_PATH_LEN 255
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#define MAX_DRIVES_PER_CONTROLLER 4
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#define MAX_CONTROLLERS 4
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/* MS doesn't prototype this but the w2k kernel exports it */
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int _cdecl swprintf(const WCHAR *, ...);
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/* need ioctls in ddk build mode */
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#include <ntdddisk.h>
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struct _CONTROLLER_INFO;
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typedef struct _DRIVE_INFO
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{
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struct _CONTROLLER_INFO *ControllerInfo;
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UCHAR UnitNumber; /* 0,1,2,3 */
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LARGE_INTEGER MotorStartTime;
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PDEVICE_OBJECT DeviceObject;
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CM_FLOPPY_DEVICE_DATA FloppyDeviceData;
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DISK_GEOMETRY DiskGeometry;
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UCHAR BytesPerSectorCode;
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WCHAR SymLinkBuffer[MAX_DEVICE_NAME];
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WCHAR ArcPathBuffer[MAX_ARC_PATH_LEN];
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ULONG DiskChangeCount;
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BOOLEAN Initialized;
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} DRIVE_INFO, *PDRIVE_INFO;
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typedef struct _CONTROLLER_INFO
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{
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BOOLEAN Populated;
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BOOLEAN Initialized;
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ULONG ControllerNumber;
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INTERFACE_TYPE InterfaceType;
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ULONG BusNumber;
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ULONG Level;
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KIRQL MappedLevel;
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ULONG Vector;
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ULONG MappedVector;
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KINTERRUPT_MODE InterruptMode;
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PUCHAR BaseAddress;
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ULONG Dma;
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ULONG MapRegisters;
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PVOID MapRegisterBase;
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BOOLEAN Master;
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KEVENT SynchEvent;
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KDPC Dpc;
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PKINTERRUPT InterruptObject;
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PADAPTER_OBJECT AdapterObject;
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UCHAR NumberOfDrives;
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BOOLEAN ImpliedSeeks;
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DRIVE_INFO DriveInfo[MAX_DRIVES_PER_CONTROLLER];
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PDRIVE_INFO CurrentDrive;
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BOOLEAN Model30;
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KEVENT MotorStoppedEvent;
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KTIMER MotorTimer;
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KDPC MotorStopDpc;
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BOOLEAN StopDpcQueued;
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} CONTROLLER_INFO, *PCONTROLLER_INFO;
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NTSTATUS NTAPI
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DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath);
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VOID NTAPI
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SignalMediaChanged(PDEVICE_OBJECT DeviceObject, PIRP Irp);
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NTSTATUS NTAPI
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WaitForControllerInterrupt(PCONTROLLER_INFO ControllerInfo, PLARGE_INTEGER Timeout);
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NTSTATUS NTAPI
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ResetChangeFlag(PDRIVE_INFO DriveInfo);
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VOID NTAPI
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StartMotor(PDRIVE_INFO DriveInfo);
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VOID NTAPI
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StopMotor(PCONTROLLER_INFO ControllerInfo);
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/*
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* MEDIA TYPES
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*
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* This table was found at http://www.nondot.org/sabre/os/files/Disk/FloppyMediaIDs.txt.
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* Thanks to raster@indirect.com for this information.
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*
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* Format Size Cyls Heads Sec/Trk FATs Sec/FAT Sec/Root Media
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* 160K 5 1/4 40 1 8 2 ? ? FE
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* 180K 5 1/4 40 1 9 2 ? 4 FC
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* 320K 5 1/4 40 2 8 2 ? ? FF
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* 360K 5 1/4 40 2 9 2 4 7 FD
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* 1.2M 5 1/4 80 2 15 2 14 14 F9
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* 720K 3 1/2 80 2 9 2 6 7 F9
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* 1.44M 3 1/2 80 2 18 2 18 14 F0
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*/
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#define GEOMETRY_144_MEDIATYPE F3_1Pt44_512
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#define GEOMETRY_144_CYLINDERS 80
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#define GEOMETRY_144_TRACKSPERCYLINDER 2
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#define GEOMETRY_144_SECTORSPERTRACK 18
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#define GEOMETRY_144_BYTESPERSECTOR 512
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