+++ /dev/null
-/*
- * PROJECT: ReactOS PCI Bus Driver
- * LICENSE: BSD - See COPYING.ARM in the top level directory
- * FILE: drivers/bus/pci/arb/arb_comn.c
- * PURPOSE: Common Arbitration Code
- * PROGRAMMERS: ReactOS Portable Systems Group
- */
-
-/* INCLUDES *******************************************************************/
-
-#include <pci.h>
-
-#define NDEBUG
-#include <debug.h>
-
-/* GLOBALS ********************************************************************/
-
-PCHAR PciArbiterNames[] =
-{
- "I/O Port",
- "Memory",
- "Interrupt",
- "Bus Number"
-};
-
-/* FUNCTIONS ******************************************************************/
-
-VOID
-NTAPI
-PciArbiterDestructor(IN PPCI_ARBITER_INSTANCE Arbiter)
-{
- UNREFERENCED_PARAMETER(Arbiter);
- /* This function is not yet implemented */
- UNIMPLEMENTED;
- while (TRUE);
-}
-
-NTSTATUS
-NTAPI
-PciInitializeArbiters(IN PPCI_FDO_EXTENSION FdoExtension)
-{
- PPCI_INTERFACE CurrentInterface, *Interfaces;
- PPCI_PDO_EXTENSION PdoExtension;
- PPCI_ARBITER_INSTANCE ArbiterInterface;
- NTSTATUS Status;
- PCI_SIGNATURE ArbiterType;
- ASSERT_FDO(FdoExtension);
-
- /* Loop all the arbiters */
- for (ArbiterType = PciArb_Io; ArbiterType <= PciArb_BusNumber; ArbiterType++)
- {
- /* Check if this is the extension for the Root PCI Bus */
- if (!PCI_IS_ROOT_FDO(FdoExtension))
- {
- /* Get the PDO extension */
- PdoExtension = FdoExtension->PhysicalDeviceObject->DeviceExtension;
- ASSERT_PDO(PdoExtension);
-
- /* Skip this bus if it does subtractive decode */
- if (PdoExtension->Dependent.type1.SubtractiveDecode)
- {
- DPRINT1("PCI Not creating arbiters for subtractive bus %u\n",
- PdoExtension->Dependent.type1.SubtractiveDecode);
- continue;
- }
- }
-
- /* Query all the registered arbiter interfaces */
- Interfaces = PciInterfaces;
- while (*Interfaces)
- {
- /* Find the one that matches the arbiter currently being setup */
- CurrentInterface = *Interfaces;
- if (CurrentInterface->Signature == ArbiterType) break;
- Interfaces++;
- }
-
- /* Check if the required arbiter was not found in the list */
- if (!*Interfaces)
- {
- /* Skip this arbiter and try the next one */
- DPRINT1("PCI - FDO ext 0x%p no %s arbiter.\n",
- FdoExtension,
- PciArbiterNames[ArbiterType - PciArb_Io]);
- continue;
- }
-
- /* An arbiter was found, allocate an instance for it */
- Status = STATUS_INSUFFICIENT_RESOURCES;
- ArbiterInterface = ExAllocatePoolWithTag(PagedPool,
- sizeof(PCI_ARBITER_INSTANCE),
- PCI_POOL_TAG);
- if (!ArbiterInterface) break;
-
- /* Setup the instance */
- ArbiterInterface->BusFdoExtension = FdoExtension;
- ArbiterInterface->Interface = CurrentInterface;
- swprintf(ArbiterInterface->InstanceName,
- L"PCI %S (b=%02x)",
- PciArbiterNames[ArbiterType - PciArb_Io],
- FdoExtension->BaseBus);
-
- /* Call the interface initializer for it */
- Status = CurrentInterface->Initializer(ArbiterInterface);
- if (!NT_SUCCESS(Status)) break;
-
- /* Link it with this FDO */
- PcipLinkSecondaryExtension(&FdoExtension->SecondaryExtension,
- &FdoExtension->SecondaryExtLock,
- &ArbiterInterface->Header,
- ArbiterType,
- PciArbiterDestructor);
-
- /* This arbiter is now initialized, move to the next one */
- DPRINT1("PCI - FDO ext 0x%p %S arbiter initialized (context 0x%p).\n",
- FdoExtension,
- L"ARBITER HEADER MISSING", //ArbiterInterface->CommonInstance.Name,
- ArbiterInterface);
- Status = STATUS_SUCCESS;
- }
-
- /* Return to caller */
- return Status;
-}
-
-NTSTATUS
-NTAPI
-PciInitializeArbiterRanges(IN PPCI_FDO_EXTENSION DeviceExtension,
- IN PCM_RESOURCE_LIST Resources)
-{
- PPCI_PDO_EXTENSION PdoExtension;
- //CM_RESOURCE_TYPE DesiredType;
- PVOID Instance;
- PCI_SIGNATURE ArbiterType;
-
- UNREFERENCED_PARAMETER(Resources);
-
- /* Arbiters should not already be initialized */
- if (DeviceExtension->ArbitersInitialized)
- {
- /* Duplicated start request, fail initialization */
- DPRINT1("PCI Warning hot start FDOx %p, resource ranges not checked.\n", DeviceExtension);
- return STATUS_INVALID_DEVICE_REQUEST;
- }
-
- /* Check for non-root FDO */
- if (!PCI_IS_ROOT_FDO(DeviceExtension))
- {
- /* Grab the PDO */
- PdoExtension = (PPCI_PDO_EXTENSION)DeviceExtension->PhysicalDeviceObject->DeviceExtension;
- ASSERT_PDO(PdoExtension);
-
- /* Check if this is a subtractive bus */
- if (PdoExtension->Dependent.type1.SubtractiveDecode)
- {
- /* There is nothing to do regarding arbitration of resources */
- DPRINT1("PCI Skipping arbiter initialization for subtractive bridge FDOX %p\n", DeviceExtension);
- return STATUS_SUCCESS;
- }
- }
-
- /* Loop all arbiters */
- for (ArbiterType = PciArb_Io; ArbiterType <= PciArb_Memory; ArbiterType++)
- {
- /* Pick correct resource type for each arbiter */
- if (ArbiterType == PciArb_Io)
- {
- /* I/O Port */
- //DesiredType = CmResourceTypePort;
- }
- else if (ArbiterType == PciArb_Memory)
- {
- /* Device RAM */
- //DesiredType = CmResourceTypeMemory;
- }
- else
- {
- /* Ignore anything else */
- continue;
- }
-
- /* Find an arbiter of this type */
- Instance = PciFindNextSecondaryExtension(&DeviceExtension->SecondaryExtension,
- ArbiterType);
- if (Instance)
- {
- /*
- * Now we should initialize it, not yet implemented because Arb
- * library isn't yet implemented, not even the headers.
- */
- UNIMPLEMENTED;
- //while (TRUE);
- }
- else
- {
- /* The arbiter was not found, this is an error! */
- DPRINT1("PCI - FDO ext 0x%p %s arbiter (REQUIRED) is missing.\n",
- DeviceExtension,
- PciArbiterNames[ArbiterType - PciArb_Io]);
- }
- }
-
- /* Arbiters are now initialized */
- DeviceExtension->ArbitersInitialized = TRUE;
- return STATUS_SUCCESS;
-}
-
-/* EOF */
projects / reactos.git / blobdiff