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Initial revision
svn path=/trunk/; revision=56
This commit is contained in:
Rex Jolliff
parent
3f988bd286
commit
c38258c97a
218
reactos/drivers/dd/floppy/floppy.c
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218
reactos/drivers/dd/floppy/floppy.c
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@ -0,0 +1,218 @@
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//
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// FLOPPY.C - NEC-765/8272A floppy device driver
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// written by Rex Jolliff
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// with help from various other sources, including but not limited to:
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// Art Baker's NT Device Driver Book, Linux Source, and the internet.
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//
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// Modification History:
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// 08/19/98 RJJ Created.
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//
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#include <ddk/ntddk.h>
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#include "floppy.h"
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#define VERSION "V0.0.1"
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// --------------------------------------------------- File Statics
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// ------------------------------------------------------ Functions
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// ModuleEntry
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//
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// DESCRIPTION:
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// This function initializes the driver, locates and claims
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// hardware resources, and creates various NT objects needed
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// to process I/O requests.
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//
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// RUN LEVEL:
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// PASSIVE_LEVEL
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//
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// ARGUMENTS:
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// IN PDRIVER_OBJECT DriverObject System allocated Driver Object
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// for this driver
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// IN PUNICODE_STRING RegistryPath Name of registry driver service
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// key
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//
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// RETURNS:
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// NTSTATUS
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NTSTATUS ModuleEntry(
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IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING RegistryPath
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) {
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NTSTATUS RC;
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PFLOPPY_DEVICE_EXTENSION DeviceExtension;
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// Export other driver entry points...
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DriverObject->DriverStartIo = FloppyStartIo;
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DriverObject->MajorFunction[IRP_MJ_CREATE] = FloppyDispatchOpenClose;
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DriverObject->MajorFunction[IRP_MJ_CLOSE] = FloppyDispatchOpenClose;
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DriverObject->MajorFunction[IRP_MJ_READ] = FloppyDispatchReadWrite;
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DriverObject->MajorFunction[IRP_MJ_WRITE] = FloppyDispatchReadWrite;
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DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = FloppyDispatchDeviceControl;
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// FIXME: Try to detect floppy and abort if it fails
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// Create a device object for the floppy
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RC = IoCreateDevice(DriverObject,
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sizeof(FLOPPY_DEVICE_EXTENSION),
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DeviceName,
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FILE_DEVICE_DISK,
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0,
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TRUE,
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&DeviceObject);
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if (!NT_SUCCESS(RC)) {
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DPRINT("Could not create device for floppy");
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return STATUS_NO_SUCH_DEVICE;
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}
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// Fill out Device Extension
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DeviceExtension = (PFLOPPY_DEVICE_EXTENSION)
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DeviceObject->DeviceExtension;
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DeviceExtension->Number = 0;
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DeviceExtension->PortBase = FLOPPY_PORT_BASE;
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DeviceExtension->Vector = FLOPPY_IRQ_VECTOR;
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DeviceExtension->IrqL = FLOPPY_DIRQL;
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DeviceExtension->DMASupported = FALSE;
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DeviceExtension->FloppyState = FloppyStateIdle;
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// Register an interrupt handler for this device
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RC = IoConnectInterrupt(&DeviceExtension->Interrupt,
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FloppyIsr, DeviceExtension, NULL,
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DeviceExtension->Vector, DeviceExtension->IrqL,
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DeviceExtension->IrqL, FLOPPY_IRQ_MODE,
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FALSE, FLOPPY_AFFINITY, FALSE);
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if (!NT_SUCCESS(RC)) {
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DPRINT("Could not Connect Interrupt %d\n", DeviceExtension->Vector);
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return STATUS_NO_SUCH_DEVICE;
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}
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// FIXME: register a DMA handler if needed for this controller
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return STATUS_SUCCESS;
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}
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// FloppyGetControllerVersion
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//
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// DESCRIPTION
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// Get the type/version of the floppy controller
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//
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// RUN LEVEL:
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// PASSIVE_LEVEL
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//
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// ARGUMENTS:
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// IN OUT PFLOPPY_DEVICE_EXTENSION DeviceExtension
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//
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// RETURNS:
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// BOOL success or failure
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//
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// COMMENTS:
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// This routine (get_fdc_version) was originally written by David C. Niemi
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//
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static BOOLEAN FloppyGetControllerVersion(
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IN OUT PFLOPPY_DEVICE_EXTENSION DeviceExtension
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) {
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int Result;
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FLOPPY_CMD CommandToSend;
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FLOPPY_RESULT ResultReturned
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CommandToSend.CMd[0] = FLOPPY_CMD_FD_DUMPREGS;
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FloppyWriteCommand(DeviceExtension->PortBase, &CommandToSend, &ResultReturned);
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/* 82072 and better know DUMPREGS */
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if (FDCS->reset)
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return FDC_NONE;
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if ((r = result()) <= 0x00)
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return FDC_NONE; /* No FDC present ??? */
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if ((r==1) && (reply_buffer[0] == 0x80)){
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printk(KERN_INFO "FDC %d is an 8272A\n",fdc);
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return FDC_8272A; /* 8272a/765 don't know DUMPREGS */
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}
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if (r != 10) {
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printk("FDC %d init: DUMPREGS: unexpected return of %d bytes.\n",
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fdc, r);
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return FDC_UNKNOWN;
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}
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if(!fdc_configure()) {
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printk(KERN_INFO "FDC %d is an 82072\n",fdc);
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return FDC_82072; /* 82072 doesn't know CONFIGURE */
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}
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output_byte(FD_PERPENDICULAR);
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if(need_more_output() == MORE_OUTPUT) {
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output_byte(0);
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} else {
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printk(KERN_INFO "FDC %d is an 82072A\n", fdc);
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return FDC_82072A; /* 82072A as found on Sparcs. */
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}
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output_byte(FD_UNLOCK);
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r = result();
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if ((r == 1) && (reply_buffer[0] == 0x80)){
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printk(KERN_INFO "FDC %d is a pre-1991 82077\n", fdc);
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return FDC_82077_ORIG; /* Pre-1991 82077, doesn't know
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* LOCK/UNLOCK */
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}
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if ((r != 1) || (reply_buffer[0] != 0x00)) {
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printk("FDC %d init: UNLOCK: unexpected return of %d bytes.\n",
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fdc, r);
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return FDC_UNKNOWN;
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}
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output_byte(FD_PARTID);
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r = result();
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if (r != 1) {
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printk("FDC %d init: PARTID: unexpected return of %d bytes.\n",
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fdc, r);
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return FDC_UNKNOWN;
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}
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if (reply_buffer[0] == 0x80) {
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printk(KERN_INFO "FDC %d is a post-1991 82077\n",fdc);
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return FDC_82077; /* Revised 82077AA passes all the tests */
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}
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switch (reply_buffer[0] >> 5) {
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case 0x0:
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/* Either a 82078-1 or a 82078SL running at 5Volt */
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printk(KERN_INFO "FDC %d is an 82078.\n",fdc);
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return FDC_82078;
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case 0x1:
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printk(KERN_INFO "FDC %d is a 44pin 82078\n",fdc);
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return FDC_82078;
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case 0x2:
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printk(KERN_INFO "FDC %d is a S82078B\n", fdc);
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return FDC_S82078B;
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case 0x3:
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printk(KERN_INFO "FDC %d is a National Semiconductor PC87306\n", fdc);
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return FDC_87306;
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default:
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printk(KERN_INFO "FDC %d init: 82078 variant with unknown PARTID=%d.\n",
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fdc, reply_buffer[0] >> 5);
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return FDC_82078_UNKN;
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}
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} /* get_fdc_version */
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static NTSTATUS FloppyStartIo(
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IN PDEVICE_OBJECT DeviceObject,
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IN PIRP Irp
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) {
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PIO_STACK_LOCATION IrpStack;
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PFLOPPY_DEVICE_EXTENSION DeviceExtension;
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IrpStack = IoGetCurrentIrpStackLocation(Irp);
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DeviceExtension = (PFLOPPY_DEVICE_EXTENSION) DeviceObject->DeviceExtension;
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}
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FloppyDispatchOpenClose
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FloppyDispatchReadWrite
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FloppyDispatchDeviceControl
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FloppyIsr
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75
reactos/drivers/dd/floppy/floppy.h
Normal file
75
reactos/drivers/dd/floppy/floppy.h
Normal file
@ -0,0 +1,75 @@
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#define FLOPPY_REG_DOR 0x0002
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#define FLOPPY_REG_MSTAT 0x0004
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#define FLOPPY_MS_DRV0BUSY 0x01
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#define FLOPPY_MS_DRV1BUSY 0x02
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#define FLOPPY_MS_DRV2BUSY 0x04
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#define FLOPPY_MS_DRV3BUSY 0x08
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#define FLOPPY_MS_FDCBUSY 0x10
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#define FLOPPY_MS_DMAMODE 0x20
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#define FLOPPY_MS_DATADIR 0x40
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#define FLOPPY_MS_DATARDY 0x80
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#define FLOPPY_REG_DATA 0x0005
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#define FLOPPY_REG_DIR 0x0007 /* READ ONLY */
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#define FLOPPY_DI_DSKCHNG 0x80
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#define FLOPPY_REG_CCNTL 0x0007 /* WRITE ONLY */
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#define FLOPPY_CMD_RD_TRK 0x02
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#define FLOPPY_CMD_SPEC_CHARS 0x03
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#define FLOPPY_CSC_SRT_SHIFT 4
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#define FLOPPY_CSC_HUT_MASK 0x0f
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#define FLOPPY_CSC_HLT_SHIFT 1
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#define FLOPPY_CSC_NON_DMA 0x01
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#define FLOPPY_CMD_SNS_DRV 0x04
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#define FLOPPY_CMD_WRT_DATA 0x05
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#define FLOPPY_CMD_RD_DATA 0x06
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#define FLOPPY_CMD_RECAL 0x07
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#define FLOPPY_CMD_SNS_INTR 0x08
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#define FLOPPY_CSI_IC_MASK 0xe0
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#define FLOPPY_CSI_IC_RDYCH 0x60
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#define FLOPPY_CSI_IC_SEEKGD 0x80
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#define FLOPPY_CSI_IC_SEEKBD 0xc0
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#define FLOPPY_CMD_WRT_DEL 0x09
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#define FLOPPY_CMD_RD_ID 0x0a
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#define FLOPPY_CMD_RD_DEL 0x0c
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#define FLOPPY_CMD_FMT_TRK 0x0d
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#define FLOPPY_CMD_DUMP_FDC 0x0e
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#define FLOPPY_CMD_SEEK 0x0f
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#define FLOPPY_CMD_VERSION 0x10
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#define FLOPPY_CMD_SCN_EQ 0x11
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#define FLOPPY_CMD_PPND_RW 0x12
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#define FLOPPY_CMD_CFG_FIFO 0x13
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#define FLOPPY_CMD_LCK_FIFO 0x14
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#define FLOPPY_CMD_PARTID 0x18
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#define FLOPPY_CMD_SCN_LE 0x19
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#define FLOPPY_CMD_SCN_GE 0x1d
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#define FLOPPY_CMD_CFG_PWR 0x27
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#define FLOPPY_CMD_SAVE_FDC 0x2e
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#define FLOPPY_CMD_FMT_ISO 0x33
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#define FLOPPY_CMD_DMA_READ 0x46
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#define FLOPPY_CMD_DMA_WRT 0x4a
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#define FLOPPY_CMD_REST_FDC 0x4e
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#define FLOPPY_CMD_DRV_SPEC 0x8e
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#define FLOPPY_CMD_RSEEK_OUT 0x8f
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#define FLOPPY_CMD_ULK_FIFO 0x94
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#define FLOPPY_CMD_RSEEK_IN 0xcf
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#define FLOPPY_CMD_FMT_WRT 0xef
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// Command Code modifiers
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#define FLOPPY_C0M_SK 0x20
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#define FLOPPY_C0M_MFM 0x40
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#define FLOPPY_C0M_MT 0x80
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#define FLOPPY_C1M_DRVMASK 0x03
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#define FLOPPY_C1M_HEAD1 0x04
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// Status code values and masks
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#define FLOPPY_ST0_INVALID 0x80
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// useful command defines
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#define FLOPPY_CMD_READ (FLOPPY_CMD_RD_DATA | FLOPPY_C0M_SK | FLOPPY_C0M_MFM | FLOPPY_C0M_MT)
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#define FLOPPY_CMD_WRITE (FLOPPY_CMD_WRT_DATA | FLOPPY_C0M_MFM | FLOPPY_C0M_MT)
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#define FLOPPY_CMD_FORMAT (FLOPPY_CMD_FMT_TRK | FLOPPY_C0M_MFM)
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