I have problem with IoConnectInterrupt function. It doesn’t return
STATUS_SUCCESS. I presume the problem is in data that are previously gotten
from functions HalTranslateBusAddress and HalGetInterruptVector. I need
variables that would describe Isa bus, and COM2 port. I’m not sure for
values of bus number, and bus address. There is a code down that describes
things I’m doing. Can someone tell me, how can I get those values from
system or registry. (for i386, NT4)
addressSpace=0x0; // I/O space !!! check to HalTranslateBusAddress
devExt->InterfaceType = SERIAL_INTERFACE_TYPE; // Isa
devExt->InterruptMode = SERIAL_INTERRUPT_MODE; // Latched
devExt->OriginalVector = // can that be the
same?
devExt->OriginalLevel = SERIAL_COM2_INTERRUPT; // = 0x3h
devExt->BusNumber = SERIAL_BUS_NUMBER; // = 0
devExt->Port.LowPart=devExt->PortList[0].u.Port.Start.LowPart =
SERIAL_COM2_PHYSICAL_BASE; // =
0x2F8
if
alTranslateBusAddress(
devExt->InterfaceType,
devExt->BusNumber,
devExt->PortList[0].u.Port.Start,
&addressSpace,
&cardAddress
)) {
LogError(DriverObject,NULL,L"HalTranslateBusAddress = FALSE.",2);
addressSpace = 1;
cardAddress.QuadPart = 0;
}
if (!addressSpace) {
devExt->UnmapRegistersRequired = TRUE;
//
// configuring port address port=DeviceRegisters[0]
// in memory !!!
// devExt->PortList[1].u.Port.Length = ???
// I don’t know how many bytes I need
// for serial port???
devExt->DeviceRegisters[0] =
MmMapIoSpace(
cardAddress,
devExt->PortList[1].u.Port.Length,
FALSE
);
} else {
devExt->UnmapRegistersRequired = FALSE;
devExt->DeviceRegisters[0
] = (PVOID)cardAddress.LowPart;
}
devExt->InterruptVector = 0;
devExt->InterruptVector = HalGetInterruptVector(
devExt->InterfaceType, // Isa
devExt->BusNumber, //
Serial_bus_Number
devExt->OriginalLevel, // ?bus_int_level
devExt->OriginalVector, // ?bus_int_vect
<- br. int.
&devExt->InterruptLevel, // OUT
&devExt->InterruptAffinity // OUT
);
if (devExt->InterruptVector == 0)
{
LogError(devExt->deviceObject,NULL,L"HalGetInterruptVector failed with
error!!!",2);
Status = STATUS_INSUFFICIENT_RESOURCES;
MyUnload(DriverObject);
goto InitializeExit;
}
//
// Connect to interrupt from the device. After this call,
// interrupts from the device will result in calls to our
MyHandleInterrupt
// function.
//
Status = IoConnectInterrupt(&devExt->InterruptObject,
MyHandleInterrupt,
devExt, // ISR Context
NULL,
devExt->InterruptVector,
devExt->InterruptLevel, // Irql
devExt->InterruptLevel,
devExt->InterruptMode,
TRUE,
devExt->InterruptAffinity,
FALSE);
…