717 lines
17 KiB
C
717 lines
17 KiB
C
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/*++
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Copyright (c) 1996-2000 Microsoft Corporation
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Module Name:
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hookhal.c
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Abstract:
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The module overrides the Hal functions that are now controlled by the
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PCI driver.
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Author:
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Andrew Thornton (andrewth) 11-Sept-1998
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Revision History:
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--*/
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#include "pcip.h"
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pHalAssignSlotResources PcipSavedAssignSlotResources = NULL;
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pHalTranslateBusAddress PcipSavedTranslateBusAddress = NULL;
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BOOLEAN
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PciTranslateBusAddress(
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IN INTERFACE_TYPE InterfaceType,
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IN ULONG BusNumber,
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IN PHYSICAL_ADDRESS BusAddress,
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IN OUT PULONG AddressSpace,
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OUT PPHYSICAL_ADDRESS TranslatedAddress
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);
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VOID
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PciHookHal(
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VOID
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)
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/*++
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Routine Description:
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This is called when the PCI driver is loaded and it takes over the functions
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that have traditionally been in the HAL.
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Arguments:
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None
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Return Value:
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None
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--*/
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{
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ASSERT(PcipSavedAssignSlotResources == NULL);
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ASSERT(PcipSavedTranslateBusAddress == NULL);
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//
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// Override the handlers for AssignSlotResources and
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// TranslateBusAddress. (But only modify the HAL dispatch
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// table once.)
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//
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PcipSavedAssignSlotResources = HALPDISPATCH->HalPciAssignSlotResources;
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HALPDISPATCH->HalPciAssignSlotResources = PciAssignSlotResources;
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PcipSavedTranslateBusAddress = HALPDISPATCH->HalPciTranslateBusAddress;
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HALPDISPATCH->HalPciTranslateBusAddress = PciTranslateBusAddress;
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}
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VOID
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PciUnhookHal(
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VOID
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)
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/*++
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Routine Description:
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This reverses the changed made by PciHookHal. It is called as part of
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unloading the PCI driver which seems like a really bad idea...
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Arguments:
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None
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Return Value:
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None
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--*/
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{
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ASSERT(PcipSavedAssignSlotResources != NULL);
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ASSERT(PcipSavedTranslateBusAddress != NULL);
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//
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// Override the handlers for AssignSlotResources and
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// TranslateBusAddress. (But only modify the HAL dispatch
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// table once.)
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//
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HALPDISPATCH->HalPciAssignSlotResources = PcipSavedAssignSlotResources;
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HALPDISPATCH->HalPciTranslateBusAddress = PcipSavedTranslateBusAddress;
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PcipSavedAssignSlotResources = NULL;
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PcipSavedTranslateBusAddress = NULL;
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}
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PPCI_PDO_EXTENSION
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PciFindPdoByLocation(
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IN ULONG BusNumber,
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IN PCI_SLOT_NUMBER Slot
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)
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/*++
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Routine Description:
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Arguments:
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BusNumber - the bus number of the bus the device is on
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Slot - the device/function of the device
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Return Value:
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The PDO or NULL if one can not be found
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--*/
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{
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PSINGLE_LIST_ENTRY nextEntry;
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PPCI_FDO_EXTENSION fdoExtension;
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PPCI_PDO_EXTENSION pdoExtension = NULL;
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ExAcquireFastMutex(&PciGlobalLock);
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//
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// Find the bus FDO.
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//
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for ( nextEntry = PciFdoExtensionListHead.Next;
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nextEntry != NULL;
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nextEntry = nextEntry->Next ) {
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fdoExtension = CONTAINING_RECORD(nextEntry,
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PCI_FDO_EXTENSION,
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List);
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if (fdoExtension->BaseBus == BusNumber) {
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break;
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}
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}
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ExReleaseFastMutex(&PciGlobalLock);
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if (nextEntry == NULL) {
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//
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// This is bad.
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//
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PciDebugPrint(PciDbgAlways, "Pci: Could not find PCI bus FDO. Bus Number = 0x%x\n", BusNumber);
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goto cleanup;
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}
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//
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// Now find the pdo for the device in this slot
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//
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ExAcquireFastMutex(&fdoExtension->ChildListMutex);
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for (pdoExtension = fdoExtension->ChildPdoList;
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pdoExtension;
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pdoExtension = pdoExtension->Next) {
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//
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// People probably don't clear the unused bits in a PCI_SLOT_NUMBER so
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// ignore them in the main build but assert checked so we can get this
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// fixed
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//
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if (pdoExtension->Slot.u.bits.DeviceNumber == Slot.u.bits.DeviceNumber
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&& pdoExtension->Slot.u.bits.FunctionNumber == Slot.u.bits.FunctionNumber) {
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ASSERT(pdoExtension->Slot.u.AsULONG == Slot.u.AsULONG);
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//
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// This is our guy!
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//
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break;
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}
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}
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ExReleaseFastMutex(&fdoExtension->ChildListMutex);
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if (pdoExtension == NULL) {
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//
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// This is bad.
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//
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PciDebugPrint(PciDbgAlways,
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"Pci: Could not find PDO for device @ %x.%x.%x\n",
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BusNumber,
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Slot.u.bits.DeviceNumber,
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Slot.u.bits.FunctionNumber
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);
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goto cleanup;
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}
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return pdoExtension;
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cleanup:
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return NULL;
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}
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NTSTATUS
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PciAssignSlotResources (
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IN PUNICODE_STRING RegistryPath,
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IN PUNICODE_STRING DriverClassName OPTIONAL,
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IN PDRIVER_OBJECT DriverObject,
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IN PDEVICE_OBJECT DeviceObject OPTIONAL,
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IN INTERFACE_TYPE BusType,
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IN ULONG BusNumber,
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IN ULONG Slot,
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IN OUT PCM_RESOURCE_LIST *AllocatedResources
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)
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/*++
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Routine Description:
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This subsumes the the functinality of HalAssignSlotResources for PCI devices.
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This function builds some bookkeeping information about legacy
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PCI device so that we know how to route interrupts for these
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PCI devices. We build this here because this is the only place
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we see the legacy device object associated with proper bus, slot,
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function information.
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Arguments:
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As HalAssignSlotResources
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Return Value:
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STATUS_SUCCESS or error
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--*/
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{
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NTSTATUS status;
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PPCI_PDO_EXTENSION pdoExtension;
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PPCI_SLOT_NUMBER slotNumber = (PPCI_SLOT_NUMBER) &Slot;
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PCI_COMMON_HEADER buffer;
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PPCI_COMMON_CONFIG commonConfig = (PPCI_COMMON_CONFIG) &buffer;
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PIO_RESOURCE_REQUIREMENTS_LIST requirements = NULL;
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PCM_RESOURCE_LIST resources = NULL;
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ULONG readIndex, writeIndex;
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PCM_PARTIAL_RESOURCE_LIST partialList;
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PCM_PARTIAL_RESOURCE_DESCRIPTOR descriptors;
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ULONG descriptorCount;
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PDEVICE_OBJECT oldDO;
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PAGED_CODE();
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ASSERT(PcipSavedAssignSlotResources);
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ASSERT(BusType == PCIBus);
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*AllocatedResources = NULL;
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pdoExtension = PciFindPdoByLocation(BusNumber, *slotNumber);
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if (!pdoExtension) {
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return STATUS_DEVICE_DOES_NOT_EXIST;
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}
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//
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// Grab the PciGlobalLock since we will modify the legacy cache.
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//
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ExAcquireFastMutex(&PciGlobalLock);
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//
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// Make sure that they didn't pass us in our PDO
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//
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ASSERT(DeviceObject != pdoExtension->PhysicalDeviceObject);
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PciReadDeviceConfig(
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pdoExtension,
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commonConfig,
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0,
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PCI_COMMON_HDR_LENGTH
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);
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//
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// Cache everything we have now learned about this
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// device object provided that they gave us one so that we can regurgitate
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// it when the IRQ arbiter needs to know.
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//
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//
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// NTRAID #62644 - 4/20/2000 - andrewth
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//
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// This should go away when we return the real PCI pdo
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// from IoReportDetectedDevice
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//
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status = PciCacheLegacyDeviceRouting(
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DeviceObject,
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BusNumber,
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Slot,
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commonConfig->u.type0.InterruptLine,
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commonConfig->u.type0.InterruptPin,
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commonConfig->BaseClass,
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commonConfig->SubClass,
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PCI_PARENT_FDOX(pdoExtension)->PhysicalDeviceObject,
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pdoExtension,
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&oldDO
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);
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if (!NT_SUCCESS(status)) {
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//
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// We failed to allocate memory while trying to cache this legacy DO.
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//
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goto ExitWithoutUpdatingCache;
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}
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//
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// Build a requirements list for this device
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//
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status = PciBuildRequirementsList(pdoExtension,
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commonConfig,
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&requirements
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);
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pdoExtension->LegacyDriver = TRUE;
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if (!NT_SUCCESS(status)) {
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goto ExitWithCacheRestoreOnFailure;
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}
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//
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// Call the legacy API to get the resources
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//
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status = IoAssignResources(RegistryPath,
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DriverClassName,
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DriverObject,
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DeviceObject,
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requirements,
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&resources
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);
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if (!NT_SUCCESS(status)) {
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ASSERT(resources == NULL);
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goto ExitWithCacheRestoreOnFailure;
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}
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//
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// Enable the decodes
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//
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pdoExtension->CommandEnables |= (PCI_ENABLE_IO_SPACE
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| PCI_ENABLE_MEMORY_SPACE
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| PCI_ENABLE_BUS_MASTER);
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//
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// Set up the extension
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//
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PciComputeNewCurrentSettings(pdoExtension,
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resources
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);
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//
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// Program the hardware
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//
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status = PciSetResources(pdoExtension,
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TRUE, // power on
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TRUE // pretend its from a start irp
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);
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if (!NT_SUCCESS(status)) {
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goto ExitWithCacheRestoreOnFailure;
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}
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//
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// Remove the device privates from the list - yes this means that we will
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// have allocated a little more pool than required.
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//
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ASSERT(resources->Count == 1);
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partialList = &resources->List[0].PartialResourceList;
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descriptorCount = resources->List[0].PartialResourceList.Count;
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descriptors = &resources->List[0].PartialResourceList.PartialDescriptors[0];
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readIndex = 0;
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writeIndex = 0;
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while (readIndex < descriptorCount) {
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if (descriptors[readIndex].Type != CmResourceTypeDevicePrivate) {
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if (writeIndex < readIndex) {
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//
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// Shuffle the descriptor up
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//
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RtlCopyMemory(&descriptors[writeIndex],
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&descriptors[readIndex],
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sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR)
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);
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}
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writeIndex++;
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} else {
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//
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// Skip the device private, don't increment writeCount so we will
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// overwrite it
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//
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ASSERT(partialList->Count > 0);
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partialList->Count--;
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}
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readIndex++;
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}
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ASSERT(partialList->Count > 0);
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*AllocatedResources = resources;
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|
|
resources = NULL;
|
||
|
|
status = STATUS_SUCCESS;
|
||
|
|
|
||
|
|
ExitWithCacheRestoreOnFailure:
|
||
|
|
//
|
||
|
|
// On failure, restore the old legacy DO in our cache.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (!NT_SUCCESS(status)) {
|
||
|
|
|
||
|
|
PciCacheLegacyDeviceRouting(
|
||
|
|
oldDO,
|
||
|
|
BusNumber,
|
||
|
|
Slot,
|
||
|
|
commonConfig->u.type0.InterruptLine,
|
||
|
|
commonConfig->u.type0.InterruptPin,
|
||
|
|
commonConfig->BaseClass,
|
||
|
|
commonConfig->SubClass,
|
||
|
|
PCI_PARENT_FDOX(pdoExtension)->PhysicalDeviceObject,
|
||
|
|
pdoExtension,
|
||
|
|
NULL
|
||
|
|
);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
ExitWithoutUpdatingCache:
|
||
|
|
ExReleaseFastMutex(&PciGlobalLock);
|
||
|
|
|
||
|
|
if (requirements) {
|
||
|
|
ExFreePool(requirements);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (resources) {
|
||
|
|
ExFreePool(resources);
|
||
|
|
}
|
||
|
|
return status;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
BOOLEAN
|
||
|
|
PciTranslateBusAddress(
|
||
|
|
IN INTERFACE_TYPE InterfaceType,
|
||
|
|
IN ULONG BusNumber,
|
||
|
|
IN PHYSICAL_ADDRESS BusAddress,
|
||
|
|
IN OUT PULONG AddressSpace,
|
||
|
|
OUT PPHYSICAL_ADDRESS TranslatedAddress
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
This subsumes the the functinality of HalTranslateBusAddress for PCI devices.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
As HalTranslateBusAddress
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
TRUE if translation succeeded, FALSE otherwise.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
|
||
|
|
{
|
||
|
|
PPCI_FDO_EXTENSION fdoExtension;
|
||
|
|
PSINGLE_LIST_ENTRY nextEntry;
|
||
|
|
ULONG savedAddressSpace;
|
||
|
|
PPCI_PDO_EXTENSION pdoExtension = NULL;
|
||
|
|
BOOLEAN subtractive = FALSE, translatesOk = TRUE;
|
||
|
|
PPCI_ARBITER_INSTANCE pciArbiter;
|
||
|
|
PCI_SIGNATURE arbiterType;
|
||
|
|
PARBITER_INSTANCE arbiter;
|
||
|
|
RTL_RANGE_LIST_ITERATOR iterator;
|
||
|
|
PRTL_RANGE current;
|
||
|
|
ULONGLONG address = (ULONGLONG) BusAddress.QuadPart;
|
||
|
|
|
||
|
|
//
|
||
|
|
// HalTranslateBusAddress can be called at high IRQL (the DDK says
|
||
|
|
// <= DISPATCH_LEVEL) but crash dump seems to be at HIGH_LEVEL. Either way
|
||
|
|
// touching pageable data and code is a no no. If we are calling at high
|
||
|
|
// IRQL then just skip the validation that the range is on the bus as we are
|
||
|
|
// crashing/hibernating at the time anyway... We still need to call the
|
||
|
|
// original hal function to perform the translation magic.
|
||
|
|
//
|
||
|
|
|
||
|
|
if (KeGetCurrentIrql() < DISPATCH_LEVEL) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// Find the FDO for this bus
|
||
|
|
//
|
||
|
|
|
||
|
|
ExAcquireFastMutex(&PciGlobalLock);
|
||
|
|
|
||
|
|
for ( nextEntry = PciFdoExtensionListHead.Next;
|
||
|
|
nextEntry != NULL;
|
||
|
|
nextEntry = nextEntry->Next ) {
|
||
|
|
|
||
|
|
fdoExtension = CONTAINING_RECORD(nextEntry,
|
||
|
|
PCI_FDO_EXTENSION,
|
||
|
|
List);
|
||
|
|
|
||
|
|
if (fdoExtension->BaseBus == BusNumber) {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (nextEntry == NULL) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// This is bad.
|
||
|
|
//
|
||
|
|
|
||
|
|
PciDebugPrint(PciDbgAlways, "Pci: Could not find PCI bus FDO. Bus Number = 0x%x\n", BusNumber);
|
||
|
|
ExReleaseFastMutex(&PciGlobalLock);
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
for (;;) {
|
||
|
|
|
||
|
|
if (!PCI_IS_ROOT_FDO(fdoExtension)) {
|
||
|
|
|
||
|
|
pdoExtension = PCI_BRIDGE_PDO(fdoExtension);
|
||
|
|
|
||
|
|
if (pdoExtension->Dependent.type1.SubtractiveDecode) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// It is subtractive go up a level, rinse and repeat
|
||
|
|
//
|
||
|
|
|
||
|
|
fdoExtension = PCI_PARENT_FDOX(pdoExtension);
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
ExReleaseFastMutex(&PciGlobalLock);
|
||
|
|
|
||
|
|
ASSERT(fdoExtension);
|
||
|
|
|
||
|
|
//
|
||
|
|
// Find the appropriate arbiter
|
||
|
|
//
|
||
|
|
|
||
|
|
switch (*AddressSpace) {
|
||
|
|
case 0: // Memory space
|
||
|
|
case 2: // UserMode view of memory space (Alpha)
|
||
|
|
case 4: // Dense memory space (Alpha)
|
||
|
|
case 6: // UserMode view of dense memory space (Alpha)
|
||
|
|
arbiterType = PciArb_Memory;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 1: // Port space
|
||
|
|
case 3: // UserMode view of port space (Alpha)
|
||
|
|
arbiterType = PciArb_Io;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
|
||
|
|
ASSERT(FALSE);
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
pciArbiter = PciFindSecondaryExtension(fdoExtension,arbiterType);
|
||
|
|
|
||
|
|
if (!pciArbiter) {
|
||
|
|
ASSERT(FALSE);
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
arbiter = &pciArbiter->CommonInstance;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Lock it
|
||
|
|
//
|
||
|
|
|
||
|
|
ArbAcquireArbiterLock(arbiter);
|
||
|
|
|
||
|
|
//
|
||
|
|
// If the range is not owned by NULL then it should translate
|
||
|
|
//
|
||
|
|
|
||
|
|
FOR_ALL_RANGES(arbiter->Allocation, &iterator, current) {
|
||
|
|
|
||
|
|
if (address < current->Start) {
|
||
|
|
//
|
||
|
|
// We have passed all possible intersections
|
||
|
|
//
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (INTERSECT(current->Start, current->End, address, address)
|
||
|
|
&& current->Owner == NULL) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// This guy is not on our bus so he doesn't translate!
|
||
|
|
//
|
||
|
|
translatesOk = FALSE;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
ArbReleaseArbiterLock(arbiter);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Call the original HAL function to perform the translation magic
|
||
|
|
//
|
||
|
|
|
||
|
|
if (translatesOk) {
|
||
|
|
|
||
|
|
savedAddressSpace = *AddressSpace;
|
||
|
|
|
||
|
|
translatesOk = PcipSavedTranslateBusAddress(
|
||
|
|
InterfaceType,
|
||
|
|
BusNumber,
|
||
|
|
BusAddress,
|
||
|
|
AddressSpace,
|
||
|
|
TranslatedAddress
|
||
|
|
);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(_X86_) && defined(PCI_NT50_BETA1_HACKS)
|
||
|
|
|
||
|
|
if (!translatesOk) {
|
||
|
|
|
||
|
|
//
|
||
|
|
// HalTranslateBusAddress failed, figure out if we want to
|
||
|
|
// pretend it succeeded.
|
||
|
|
//
|
||
|
|
|
||
|
|
//
|
||
|
|
// GROSS HACK: If we failed to translate in the range 0xa0000
|
||
|
|
// thru 0xbffff on an X86 machine, just go ahead and allow it.
|
||
|
|
// It is probably because the BIOS is buggy.
|
||
|
|
//
|
||
|
|
// Same for 0x400 thru 0x4ff
|
||
|
|
//
|
||
|
|
|
||
|
|
if (BusAddress.HighPart == 0) {
|
||
|
|
|
||
|
|
ULONG lowPart = BusAddress.LowPart; // improve code generation
|
||
|
|
|
||
|
|
if (((savedAddressSpace == ADDRESS_SPACE_MEMORY) &&
|
||
|
|
(((lowPart >= 0xa0000) && // HACK broken MPS BIOS
|
||
|
|
(lowPart <= 0xbffff)) || //
|
||
|
|
((lowPart >= 0x400) && // HACK MGA
|
||
|
|
(lowPart <= 0x4ff)) || //
|
||
|
|
(lowPart == 0x70) )) || // HACK Trident
|
||
|
|
((savedAddressSpace == ADDRESS_SPACE_PORT) &&
|
||
|
|
((lowPart >= 0xcf8) && // HACK MGA
|
||
|
|
(lowPart <= 0xcff)))) {
|
||
|
|
|
||
|
|
translatesOk = TRUE;
|
||
|
|
*TranslatedAddress = BusAddress;
|
||
|
|
*AddressSpace = savedAddressSpace;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return translatesOk;
|
||
|
|
|
||
|
|
}
|
||
|
|
|