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If we have a PCI device, try to keep the IRQ assigned by the BIOS instead of forcing 0x9

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svn path=/trunk/; revision=17861
This commit is contained in:
Hervé Poussineau 2005-09-15 15:57:28 +00:00
parent 184ae2cb27
commit cff40b3061
1 changed files with 54 additions and 7 deletions
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61
reactos/ntoskrnl/io/pnpmgr.c
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@ -1110,14 +1110,61 @@ IopAssignDeviceResources(
}
case CmResourceTypeInterrupt:
{
INTERFACE_TYPE BusType;
ULONG SlotNumber;
ULONG ret;
UCHAR Irq;
DescriptorRaw->u.Interrupt.Level = 0;
/* FIXME: if IRQ 9 is in the possible range, use it.
* This should be a PCI device */
if (ResourceDescriptor->u.Interrupt.MinimumVector <= 9
&& ResourceDescriptor->u.Interrupt.MaximumVector >= 9)
DescriptorRaw->u.Interrupt.Vector = 9;
else
DescriptorRaw->u.Interrupt.Vector = ResourceDescriptor->u.Interrupt.MinimumVector;
DescriptorRaw->u.Interrupt.Vector = ResourceDescriptor->u.Interrupt.MinimumVector;
/* FIXME: HACK: if we have a PCI device, we try
* to keep the IRQ assigned by the BIOS */
if (NT_SUCCESS(IoGetDeviceProperty(
DeviceNode->PhysicalDeviceObject,
DevicePropertyLegacyBusType,
sizeof(INTERFACE_TYPE),
&BusType,
&ret)) && BusType == PCIBus)
{
/* We have a PCI bus */
if (NT_SUCCESS(IoGetDeviceProperty(
DeviceNode->PhysicalDeviceObject,
DevicePropertyAddress,
sizeof(ULONG),
&SlotNumber,
&ret)) && SlotNumber > 0)
{
/* We have a good slot number */
ret = HalGetBusDataByOffset(PCIConfiguration,
DeviceNode->ResourceRequirements->BusNumber,
SlotNumber,
&Irq,
0x3c /* PCI_INTERRUPT_LINE */,
sizeof(UCHAR));
if (ret != 0 && ret != 2
&& ResourceDescriptor->u.Interrupt.MinimumVector <= Irq
&& ResourceDescriptor->u.Interrupt.MaximumVector >= Irq)
{
/* The device already has an assigned IRQ */
DescriptorRaw->u.Interrupt.Vector = Irq;
}
else
{
DPRINT1("Trying to assign IRQ 0x%lx to %wZ\n",
DescriptorRaw->u.Interrupt.Vector,
&DeviceNode->InstancePath);
Irq = (UCHAR)DescriptorRaw->u.Interrupt.Vector;
ret = HalSetBusDataByOffset(PCIConfiguration,
DeviceNode->ResourceRequirements->BusNumber,
SlotNumber,
&Irq,
0x3c /* PCI_INTERRUPT_LINE */,
sizeof(UCHAR));
if (ret == 0 || ret == 2)
KEBUGCHECK(0);
}
}
}
DescriptorTranslated->u.Interrupt.Level = 0;
DescriptorTranslated->u.Interrupt.Vector = HalGetInterruptVector(