diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c | 1644 |
1 files changed, 0 insertions, 1644 deletions
diff --git a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c b/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c deleted file mode 100644 index b3d91a8d30..0000000000 --- a/MdeModulePkg/Bus/Pci/PciBusDxe/PciLib.c +++ /dev/null @@ -1,1644 +0,0 @@ -/** @file
- Internal library implementation for PCI Bus module.
-
-Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
-This program and the accompanying materials
-are licensed and made available under the terms and conditions of the BSD License
-which accompanies this distribution. The full text of the license may be found at
-http://opensource.org/licenses/bsd-license.php
-
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include "PciBus.h"
-
-GLOBAL_REMOVE_IF_UNREFERENCED
-CHAR16 *mBarTypeStr[] = {
- L"Unknow",
- L" Io16",
- L" Io32",
- L" Mem32",
- L"PMem32",
- L" Mem64",
- L"PMem64",
- L" Io",
- L" Mem",
- L"Unknow"
- };
-
-/**
- Retrieve the PCI Card device BAR information via PciIo interface.
-
- @param PciIoDevice PCI Card device instance.
-
-**/
-VOID
-GetBackPcCardBar (
- IN PCI_IO_DEVICE *PciIoDevice
- )
-{
- UINT32 Address;
-
- if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- return;
- }
-
- //
- // Read PciBar information from the bar register
- //
- if (!gFullEnumeration) {
- Address = 0;
- PciIoDevice->PciIo.Pci.Read (
- &(PciIoDevice->PciIo),
- EfiPciIoWidthUint32,
- PCI_CARD_MEMORY_BASE_0,
- 1,
- &Address
- );
-
- (PciIoDevice->PciBar)[P2C_MEM_1].BaseAddress = (UINT64) (Address);
- (PciIoDevice->PciBar)[P2C_MEM_1].Length = 0x2000000;
- (PciIoDevice->PciBar)[P2C_MEM_1].BarType = PciBarTypeMem32;
-
- Address = 0;
- PciIoDevice->PciIo.Pci.Read (
- &(PciIoDevice->PciIo),
- EfiPciIoWidthUint32,
- PCI_CARD_MEMORY_BASE_1,
- 1,
- &Address
- );
- (PciIoDevice->PciBar)[P2C_MEM_2].BaseAddress = (UINT64) (Address);
- (PciIoDevice->PciBar)[P2C_MEM_2].Length = 0x2000000;
- (PciIoDevice->PciBar)[P2C_MEM_2].BarType = PciBarTypePMem32;
-
- Address = 0;
- PciIoDevice->PciIo.Pci.Read (
- &(PciIoDevice->PciIo),
- EfiPciIoWidthUint32,
- PCI_CARD_IO_BASE_0_LOWER,
- 1,
- &Address
- );
- (PciIoDevice->PciBar)[P2C_IO_1].BaseAddress = (UINT64) (Address);
- (PciIoDevice->PciBar)[P2C_IO_1].Length = 0x100;
- (PciIoDevice->PciBar)[P2C_IO_1].BarType = PciBarTypeIo16;
-
- Address = 0;
- PciIoDevice->PciIo.Pci.Read (
- &(PciIoDevice->PciIo),
- EfiPciIoWidthUint32,
- PCI_CARD_IO_BASE_1_LOWER,
- 1,
- &Address
- );
- (PciIoDevice->PciBar)[P2C_IO_2].BaseAddress = (UINT64) (Address);
- (PciIoDevice->PciBar)[P2C_IO_2].Length = 0x100;
- (PciIoDevice->PciBar)[P2C_IO_2].BarType = PciBarTypeIo16;
-
- }
-
- if (gPciHotPlugInit != NULL && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- GetResourcePaddingForHpb (PciIoDevice);
- }
-}
-
-/**
- Remove rejected pci device from specific root bridge
- handle.
-
- @param RootBridgeHandle Specific parent root bridge handle.
- @param Bridge Bridge device instance.
-
-**/
-VOID
-RemoveRejectedPciDevices (
- IN EFI_HANDLE RootBridgeHandle,
- IN PCI_IO_DEVICE *Bridge
- )
-{
- PCI_IO_DEVICE *Temp;
- LIST_ENTRY *CurrentLink;
- LIST_ENTRY *LastLink;
-
- if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- return;
- }
-
- CurrentLink = Bridge->ChildList.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {
-
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- if (IS_PCI_BRIDGE (&Temp->Pci)) {
- //
- // Remove rejected devices recusively
- //
- RemoveRejectedPciDevices (RootBridgeHandle, Temp);
- } else {
- //
- // Skip rejection for all PPBs, while detect rejection for others
- //
- if (IsPciDeviceRejected (Temp)) {
-
- //
- // For P2C, remove all devices on it
- //
- if (!IsListEmpty (&Temp->ChildList)) {
- RemoveAllPciDeviceOnBridge (RootBridgeHandle, Temp);
- }
-
- //
- // Finally remove itself
- //
- LastLink = CurrentLink->BackLink;
- RemoveEntryList (CurrentLink);
- FreePciDevice (Temp);
-
- CurrentLink = LastLink;
- }
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-}
-
-/**
- Dump the resourc map of the bridge device.
-
- @param[in] BridgeResource Resource descriptor of the bridge device.
-**/
-VOID
-DumpBridgeResource (
- IN PCI_RESOURCE_NODE *BridgeResource
- )
-{
- LIST_ENTRY *Link;
- PCI_RESOURCE_NODE *Resource;
- PCI_BAR *Bar;
-
- if ((BridgeResource != NULL) && (BridgeResource->Length != 0)) {
- DEBUG ((
- EFI_D_INFO, "Type = %s; Base = 0x%lx;\tLength = 0x%lx;\tAlignment = 0x%lx\n",
- mBarTypeStr[MIN (BridgeResource->ResType, PciBarTypeMaxType)],
- BridgeResource->PciDev->PciBar[BridgeResource->Bar].BaseAddress,
- BridgeResource->Length, BridgeResource->Alignment
- ));
- for ( Link = BridgeResource->ChildList.ForwardLink
- ; Link != &BridgeResource->ChildList
- ; Link = Link->ForwardLink
- ) {
- Resource = RESOURCE_NODE_FROM_LINK (Link);
- if (Resource->ResourceUsage == PciResUsageTypical) {
- Bar = Resource->Virtual ? Resource->PciDev->VfPciBar : Resource->PciDev->PciBar;
- DEBUG ((
- EFI_D_INFO, " Base = 0x%lx;\tLength = 0x%lx;\tAlignment = 0x%lx;\tOwner = %s ",
- Bar[Resource->Bar].BaseAddress, Resource->Length, Resource->Alignment,
- IS_PCI_BRIDGE (&Resource->PciDev->Pci) ? L"PPB" :
- IS_CARDBUS_BRIDGE (&Resource->PciDev->Pci) ? L"P2C" :
- L"PCI"
- ));
-
- if ((!IS_PCI_BRIDGE (&Resource->PciDev->Pci) && !IS_CARDBUS_BRIDGE (&Resource->PciDev->Pci)) ||
- (IS_PCI_BRIDGE (&Resource->PciDev->Pci) && (Resource->Bar < PPB_IO_RANGE)) ||
- (IS_CARDBUS_BRIDGE (&Resource->PciDev->Pci) && (Resource->Bar < P2C_MEM_1))
- ) {
- //
- // The resource requirement comes from the device itself.
- //
- DEBUG ((
- EFI_D_INFO, " [%02x|%02x|%02x:%02x]\n",
- Resource->PciDev->BusNumber, Resource->PciDev->DeviceNumber,
- Resource->PciDev->FunctionNumber, Bar[Resource->Bar].Offset
- ));
- } else {
- //
- // The resource requirement comes from the subordinate devices.
- //
- DEBUG ((
- EFI_D_INFO, " [%02x|%02x|%02x:**]\n",
- Resource->PciDev->BusNumber, Resource->PciDev->DeviceNumber,
- Resource->PciDev->FunctionNumber
- ));
- }
- } else {
- DEBUG ((EFI_D_INFO, " Padding:Length = 0x%lx;\tAlignment = 0x%lx\n", Resource->Length, Resource->Alignment));
- }
- }
- }
-}
-
-/**
- Find the corresponding resource node for the Device in child list of BridgeResource.
-
- @param[in] Device Pointer to PCI_IO_DEVICE.
- @param[in] BridgeResource Pointer to PCI_RESOURCE_NODE.
-
- @return !NULL The corresponding resource node for the Device.
- @return NULL No corresponding resource node for the Device.
-**/
-PCI_RESOURCE_NODE *
-FindResourceNode (
- IN PCI_IO_DEVICE *Device,
- IN PCI_RESOURCE_NODE *BridgeResource
- )
-{
- LIST_ENTRY *Link;
- PCI_RESOURCE_NODE *Resource;
-
- for ( Link = BridgeResource->ChildList.ForwardLink
- ; Link != &BridgeResource->ChildList
- ; Link = Link->ForwardLink
- ) {
- Resource = RESOURCE_NODE_FROM_LINK (Link);
- if (Resource->PciDev == Device) {
- return Resource;
- }
- }
-
- return NULL;
-}
-
-/**
- Dump the resource map of all the devices under Bridge.
-
- @param[in] Bridge Bridge device instance.
- @param[in] IoNode IO resource descriptor for the bridge device.
- @param[in] Mem32Node Mem32 resource descriptor for the bridge device.
- @param[in] PMem32Node PMem32 resource descriptor for the bridge device.
- @param[in] Mem64Node Mem64 resource descriptor for the bridge device.
- @param[in] PMem64Node PMem64 resource descriptor for the bridge device.
-**/
-VOID
-DumpResourceMap (
- IN PCI_IO_DEVICE *Bridge,
- IN PCI_RESOURCE_NODE *IoNode,
- IN PCI_RESOURCE_NODE *Mem32Node,
- IN PCI_RESOURCE_NODE *PMem32Node,
- IN PCI_RESOURCE_NODE *Mem64Node,
- IN PCI_RESOURCE_NODE *PMem64Node
- )
-{
- EFI_STATUS Status;
- LIST_ENTRY *Link;
- PCI_IO_DEVICE *Device;
- PCI_RESOURCE_NODE *ChildIoNode;
- PCI_RESOURCE_NODE *ChildMem32Node;
- PCI_RESOURCE_NODE *ChildPMem32Node;
- PCI_RESOURCE_NODE *ChildMem64Node;
- PCI_RESOURCE_NODE *ChildPMem64Node;
- CHAR16 *Str;
-
- DEBUG ((EFI_D_INFO, "PciBus: Resource Map for "));
-
- Status = gBS->OpenProtocol (
- Bridge->Handle,
- &gEfiPciRootBridgeIoProtocolGuid,
- NULL,
- NULL,
- NULL,
- EFI_OPEN_PROTOCOL_TEST_PROTOCOL
- );
- if (EFI_ERROR (Status)) {
- DEBUG ((
- EFI_D_INFO, "Bridge [%02x|%02x|%02x]\n",
- Bridge->BusNumber, Bridge->DeviceNumber, Bridge->FunctionNumber
- ));
- } else {
- Str = ConvertDevicePathToText (
- DevicePathFromHandle (Bridge->Handle),
- FALSE,
- FALSE
- );
- DEBUG ((EFI_D_INFO, "Root Bridge %s\n", Str != NULL ? Str : L""));
- if (Str != NULL) {
- FreePool (Str);
- }
- }
-
- DumpBridgeResource (IoNode);
- DumpBridgeResource (Mem32Node);
- DumpBridgeResource (PMem32Node);
- DumpBridgeResource (Mem64Node);
- DumpBridgeResource (PMem64Node);
- DEBUG ((EFI_D_INFO, "\n"));
-
- for ( Link = Bridge->ChildList.ForwardLink
- ; Link != &Bridge->ChildList
- ; Link = Link->ForwardLink
- ) {
- Device = PCI_IO_DEVICE_FROM_LINK (Link);
- if (IS_PCI_BRIDGE (&Device->Pci)) {
-
- ChildIoNode = (IoNode == NULL ? NULL : FindResourceNode (Device, IoNode));
- ChildMem32Node = (Mem32Node == NULL ? NULL : FindResourceNode (Device, Mem32Node));
- ChildPMem32Node = (PMem32Node == NULL ? NULL : FindResourceNode (Device, PMem32Node));
- ChildMem64Node = (Mem64Node == NULL ? NULL : FindResourceNode (Device, Mem64Node));
- ChildPMem64Node = (PMem64Node == NULL ? NULL : FindResourceNode (Device, PMem64Node));
-
- DumpResourceMap (
- Device,
- ChildIoNode,
- ChildMem32Node,
- ChildPMem32Node,
- ChildMem64Node,
- ChildPMem64Node
- );
- }
- }
-}
-
-/**
- Submits the I/O and memory resource requirements for the specified PCI Host Bridge.
-
- @param PciResAlloc Point to protocol instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
-
- @retval EFI_SUCCESS Successfully finished resource allocation.
- @retval EFI_NOT_FOUND Cannot get root bridge instance.
- @retval EFI_OUT_OF_RESOURCES Platform failed to program the resources if no hot plug supported.
- @retval other Some error occurred when allocating resources for the PCI Host Bridge.
-
- @note Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
-
-**/
-EFI_STATUS
-PciHostBridgeResourceAllocator (
- IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
- )
-{
- PCI_IO_DEVICE *RootBridgeDev;
- EFI_HANDLE RootBridgeHandle;
- VOID *AcpiConfig;
- EFI_STATUS Status;
- UINT64 IoBase;
- UINT64 Mem32Base;
- UINT64 PMem32Base;
- UINT64 Mem64Base;
- UINT64 PMem64Base;
- UINT64 IoResStatus;
- UINT64 Mem32ResStatus;
- UINT64 PMem32ResStatus;
- UINT64 Mem64ResStatus;
- UINT64 PMem64ResStatus;
- UINT64 MaxOptionRomSize;
- PCI_RESOURCE_NODE *IoBridge;
- PCI_RESOURCE_NODE *Mem32Bridge;
- PCI_RESOURCE_NODE *PMem32Bridge;
- PCI_RESOURCE_NODE *Mem64Bridge;
- PCI_RESOURCE_NODE *PMem64Bridge;
- PCI_RESOURCE_NODE IoPool;
- PCI_RESOURCE_NODE Mem32Pool;
- PCI_RESOURCE_NODE PMem32Pool;
- PCI_RESOURCE_NODE Mem64Pool;
- PCI_RESOURCE_NODE PMem64Pool;
- BOOLEAN ReAllocate;
- EFI_DEVICE_HANDLE_EXTENDED_DATA_PAYLOAD HandleExtendedData;
- EFI_RESOURCE_ALLOC_FAILURE_ERROR_DATA_PAYLOAD AllocFailExtendedData;
-
- //
- // Reallocate flag
- //
- ReAllocate = FALSE;
-
- //
- // It may try several times if the resource allocation fails
- //
- while (TRUE) {
- //
- // Initialize resource pool
- //
- InitializeResourcePool (&IoPool, PciBarTypeIo16);
- InitializeResourcePool (&Mem32Pool, PciBarTypeMem32);
- InitializeResourcePool (&PMem32Pool, PciBarTypePMem32);
- InitializeResourcePool (&Mem64Pool, PciBarTypeMem64);
- InitializeResourcePool (&PMem64Pool, PciBarTypePMem64);
-
- RootBridgeDev = NULL;
- RootBridgeHandle = 0;
-
- while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
- //
- // Get Root Bridge Device by handle
- //
- RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);
-
- if (RootBridgeDev == NULL) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Create the entire system resource map from the information collected by
- // enumerator. Several resource tree was created
- //
-
- //
- // If non-stardard PCI Bridge I/O window alignment is supported,
- // set I/O aligment to minimum possible alignment for root bridge.
- //
- IoBridge = CreateResourceNode (
- RootBridgeDev,
- 0,
- FeaturePcdGet (PcdPciBridgeIoAlignmentProbe) ? 0x1FF: 0xFFF,
- RB_IO_RANGE,
- PciBarTypeIo16,
- PciResUsageTypical
- );
-
- Mem32Bridge = CreateResourceNode (
- RootBridgeDev,
- 0,
- 0xFFFFF,
- RB_MEM32_RANGE,
- PciBarTypeMem32,
- PciResUsageTypical
- );
-
- PMem32Bridge = CreateResourceNode (
- RootBridgeDev,
- 0,
- 0xFFFFF,
- RB_PMEM32_RANGE,
- PciBarTypePMem32,
- PciResUsageTypical
- );
-
- Mem64Bridge = CreateResourceNode (
- RootBridgeDev,
- 0,
- 0xFFFFF,
- RB_MEM64_RANGE,
- PciBarTypeMem64,
- PciResUsageTypical
- );
-
- PMem64Bridge = CreateResourceNode (
- RootBridgeDev,
- 0,
- 0xFFFFF,
- RB_PMEM64_RANGE,
- PciBarTypePMem64,
- PciResUsageTypical
- );
-
- //
- // Create resourcemap by going through all the devices subject to this root bridge
- //
- CreateResourceMap (
- RootBridgeDev,
- IoBridge,
- Mem32Bridge,
- PMem32Bridge,
- Mem64Bridge,
- PMem64Bridge
- );
-
- //
- // Get the max ROM size that the root bridge can process
- //
- RootBridgeDev->RomSize = Mem32Bridge->Length;
-
- //
- // Skip to enlarge the resource request during realloction
- //
- if (!ReAllocate) {
- //
- // Get Max Option Rom size for current root bridge
- //
- MaxOptionRomSize = GetMaxOptionRomSize (RootBridgeDev);
-
- //
- // Enlarger the mem32 resource to accomdate the option rom
- // if the mem32 resource is not enough to hold the rom
- //
- if (MaxOptionRomSize > Mem32Bridge->Length) {
-
- Mem32Bridge->Length = MaxOptionRomSize;
- RootBridgeDev->RomSize = MaxOptionRomSize;
-
- //
- // Alignment should be adjusted as well
- //
- if (Mem32Bridge->Alignment < MaxOptionRomSize - 1) {
- Mem32Bridge->Alignment = MaxOptionRomSize - 1;
- }
- }
- }
-
- //
- // Based on the all the resource tree, contruct ACPI resource node to
- // submit the resource aperture to pci host bridge protocol
- //
- Status = ConstructAcpiResourceRequestor (
- RootBridgeDev,
- IoBridge,
- Mem32Bridge,
- PMem32Bridge,
- Mem64Bridge,
- PMem64Bridge,
- &AcpiConfig
- );
-
- //
- // Insert these resource nodes into the database
- //
- InsertResourceNode (&IoPool, IoBridge);
- InsertResourceNode (&Mem32Pool, Mem32Bridge);
- InsertResourceNode (&PMem32Pool, PMem32Bridge);
- InsertResourceNode (&Mem64Pool, Mem64Bridge);
- InsertResourceNode (&PMem64Pool, PMem64Bridge);
-
- if (Status == EFI_SUCCESS) {
- //
- // Submit the resource requirement
- //
- Status = PciResAlloc->SubmitResources (
- PciResAlloc,
- RootBridgeDev->Handle,
- AcpiConfig
- );
- //
- // If SubmitResources returns error, PciBus isn't able to start.
- // It's a fatal error so assertion is added.
- //
- DEBUG ((EFI_D_INFO, "PciBus: HostBridge->SubmitResources() - %r\n", Status));
- ASSERT_EFI_ERROR (Status);
- }
-
- //
- // Free acpi resource node
- //
- if (AcpiConfig != NULL) {
- FreePool (AcpiConfig);
- }
-
- if (EFI_ERROR (Status)) {
- //
- // Destroy all the resource tree
- //
- DestroyResourceTree (&IoPool);
- DestroyResourceTree (&Mem32Pool);
- DestroyResourceTree (&PMem32Pool);
- DestroyResourceTree (&Mem64Pool);
- DestroyResourceTree (&PMem64Pool);
- return Status;
- }
- }
- //
- // End while, at least one Root Bridge should be found.
- //
- ASSERT (RootBridgeDev != NULL);
-
- //
- // Notify platform to start to program the resource
- //
- Status = NotifyPhase (PciResAlloc, EfiPciHostBridgeAllocateResources);
- DEBUG ((EFI_D_INFO, "PciBus: HostBridge->NotifyPhase(AllocateResources) - %r\n", Status));
- if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- //
- // If Hot Plug is not supported
- //
- if (EFI_ERROR (Status)) {
- //
- // Allocation failed, then return
- //
- return EFI_OUT_OF_RESOURCES;
- }
- //
- // Allocation succeed.
- // Get host bridge handle for status report, and then skip the main while
- //
- HandleExtendedData.Handle = RootBridgeDev->PciRootBridgeIo->ParentHandle;
-
- break;
-
- } else {
- //
- // If Hot Plug is supported
- //
- if (!EFI_ERROR (Status)) {
- //
- // Allocation succeed, then continue the following
- //
- break;
- }
-
- //
- // If the resource allocation is unsuccessful, free resources on bridge
- //
-
- RootBridgeDev = NULL;
- RootBridgeHandle = 0;
-
- IoResStatus = EFI_RESOURCE_SATISFIED;
- Mem32ResStatus = EFI_RESOURCE_SATISFIED;
- PMem32ResStatus = EFI_RESOURCE_SATISFIED;
- Mem64ResStatus = EFI_RESOURCE_SATISFIED;
- PMem64ResStatus = EFI_RESOURCE_SATISFIED;
-
- while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
- //
- // Get RootBridg Device by handle
- //
- RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);
- if (RootBridgeDev == NULL) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Get host bridge handle for status report
- //
- HandleExtendedData.Handle = RootBridgeDev->PciRootBridgeIo->ParentHandle;
-
- //
- // Get acpi resource node for all the resource types
- //
- AcpiConfig = NULL;
-
- Status = PciResAlloc->GetProposedResources (
- PciResAlloc,
- RootBridgeDev->Handle,
- &AcpiConfig
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- if (AcpiConfig != NULL) {
- //
- // Adjust resource allocation policy for each RB
- //
- GetResourceAllocationStatus (
- AcpiConfig,
- &IoResStatus,
- &Mem32ResStatus,
- &PMem32ResStatus,
- &Mem64ResStatus,
- &PMem64ResStatus
- );
- FreePool (AcpiConfig);
- }
- }
- //
- // End while
- //
-
- //
- // Raise the EFI_IOB_EC_RESOURCE_CONFLICT status code
- //
- //
- // It is very difficult to follow the spec here
- // Device path , Bar index can not be get here
- //
- ZeroMem (&AllocFailExtendedData, sizeof (AllocFailExtendedData));
-
- REPORT_STATUS_CODE_WITH_EXTENDED_DATA (
- EFI_PROGRESS_CODE,
- EFI_IO_BUS_PCI | EFI_IOB_EC_RESOURCE_CONFLICT,
- (VOID *) &AllocFailExtendedData,
- sizeof (AllocFailExtendedData)
- );
-
- Status = PciHostBridgeAdjustAllocation (
- &IoPool,
- &Mem32Pool,
- &PMem32Pool,
- &Mem64Pool,
- &PMem64Pool,
- IoResStatus,
- Mem32ResStatus,
- PMem32ResStatus,
- Mem64ResStatus,
- PMem64ResStatus
- );
-
- //
- // Destroy all the resource tree
- //
- DestroyResourceTree (&IoPool);
- DestroyResourceTree (&Mem32Pool);
- DestroyResourceTree (&PMem32Pool);
- DestroyResourceTree (&Mem64Pool);
- DestroyResourceTree (&PMem64Pool);
-
- NotifyPhase (PciResAlloc, EfiPciHostBridgeFreeResources);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- ReAllocate = TRUE;
- }
- }
- //
- // End main while
- //
-
- //
- // Raise the EFI_IOB_PCI_RES_ALLOC status code
- //
- REPORT_STATUS_CODE_WITH_EXTENDED_DATA (
- EFI_PROGRESS_CODE,
- EFI_IO_BUS_PCI | EFI_IOB_PCI_RES_ALLOC,
- (VOID *) &HandleExtendedData,
- sizeof (HandleExtendedData)
- );
-
- //
- // Notify pci bus driver starts to program the resource
- //
- Status = NotifyPhase (PciResAlloc, EfiPciHostBridgeSetResources);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- RootBridgeDev = NULL;
-
- RootBridgeHandle = 0;
-
- while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
- //
- // Get RootBridg Device by handle
- //
- RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);
-
- if (RootBridgeDev == NULL) {
- return EFI_NOT_FOUND;
- }
-
- //
- // Get acpi resource node for all the resource types
- //
- AcpiConfig = NULL;
- Status = PciResAlloc->GetProposedResources (
- PciResAlloc,
- RootBridgeDev->Handle,
- &AcpiConfig
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Get the resource base by interpreting acpi resource node
- //
- //
- GetResourceBase (
- AcpiConfig,
- &IoBase,
- &Mem32Base,
- &PMem32Base,
- &Mem64Base,
- &PMem64Base
- );
-
- //
- // Process option rom for this root bridge
- //
- ProcessOptionRom (RootBridgeDev, Mem32Base, RootBridgeDev->RomSize);
-
- //
- // Create the entire system resource map from the information collected by
- // enumerator. Several resource tree was created
- //
- IoBridge = FindResourceNode (RootBridgeDev, &IoPool);
- Mem32Bridge = FindResourceNode (RootBridgeDev, &Mem32Pool);
- PMem32Bridge = FindResourceNode (RootBridgeDev, &PMem32Pool);
- Mem64Bridge = FindResourceNode (RootBridgeDev, &Mem64Pool);
- PMem64Bridge = FindResourceNode (RootBridgeDev, &PMem64Pool);
-
- ASSERT (IoBridge != NULL);
- ASSERT (Mem32Bridge != NULL);
- ASSERT (PMem32Bridge != NULL);
- ASSERT (Mem64Bridge != NULL);
- ASSERT (PMem64Bridge != NULL);
-
- //
- // Program IO resources
- //
- ProgramResource (
- IoBase,
- IoBridge
- );
-
- //
- // Program Mem32 resources
- //
- ProgramResource (
- Mem32Base,
- Mem32Bridge
- );
-
- //
- // Program PMem32 resources
- //
- ProgramResource (
- PMem32Base,
- PMem32Bridge
- );
-
- //
- // Program Mem64 resources
- //
- ProgramResource (
- Mem64Base,
- Mem64Bridge
- );
-
- //
- // Program PMem64 resources
- //
- ProgramResource (
- PMem64Base,
- PMem64Bridge
- );
-
- IoBridge ->PciDev->PciBar[IoBridge ->Bar].BaseAddress = IoBase;
- Mem32Bridge ->PciDev->PciBar[Mem32Bridge ->Bar].BaseAddress = Mem32Base;
- PMem32Bridge->PciDev->PciBar[PMem32Bridge->Bar].BaseAddress = PMem32Base;
- Mem64Bridge ->PciDev->PciBar[Mem64Bridge ->Bar].BaseAddress = Mem64Base;
- PMem64Bridge->PciDev->PciBar[PMem64Bridge->Bar].BaseAddress = PMem64Base;
-
- //
- // Dump the resource map for current root bridge
- //
- DEBUG_CODE (
- DumpResourceMap (
- RootBridgeDev,
- IoBridge,
- Mem32Bridge,
- PMem32Bridge,
- Mem64Bridge,
- PMem64Bridge
- );
- );
-
- FreePool (AcpiConfig);
- }
-
- //
- // Destroy all the resource tree
- //
- DestroyResourceTree (&IoPool);
- DestroyResourceTree (&Mem32Pool);
- DestroyResourceTree (&PMem32Pool);
- DestroyResourceTree (&Mem64Pool);
- DestroyResourceTree (&PMem64Pool);
-
- //
- // Notify the resource allocation phase is to end
- //
- Status = NotifyPhase (PciResAlloc, EfiPciHostBridgeEndResourceAllocation);
-
- return Status;
-}
-
-/**
- Allocate NumberOfBuses buses and return the next available PCI bus number.
-
- @param Bridge Bridge device instance.
- @param StartBusNumber Current available PCI bus number.
- @param NumberOfBuses Number of buses enumerated below the StartBusNumber.
- @param NextBusNumber Next available PCI bus number.
-
- @retval EFI_SUCCESS Available bus number resource is enough. Next available PCI bus number
- is returned in NextBusNumber.
- @retval EFI_OUT_OF_RESOURCES Available bus number resource is not enough for allocation.
-
-**/
-EFI_STATUS
-PciAllocateBusNumber (
- IN PCI_IO_DEVICE *Bridge,
- IN UINT8 StartBusNumber,
- IN UINT8 NumberOfBuses,
- OUT UINT8 *NextBusNumber
- )
-{
- PCI_IO_DEVICE *RootBridge;
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BusNumberRanges;
- UINT8 NextNumber;
- UINT64 MaxNumberInRange;
-
- //
- // Get PCI Root Bridge device
- //
- RootBridge = Bridge;
- while (RootBridge->Parent != NULL) {
- RootBridge = RootBridge->Parent;
- }
-
- //
- // Get next available PCI bus number
- //
- BusNumberRanges = RootBridge->BusNumberRanges;
- while (BusNumberRanges->Desc != ACPI_END_TAG_DESCRIPTOR) {
- MaxNumberInRange = BusNumberRanges->AddrRangeMin + BusNumberRanges->AddrLen - 1;
- if (StartBusNumber >= BusNumberRanges->AddrRangeMin && StartBusNumber <= MaxNumberInRange) {
- NextNumber = (UINT8)(StartBusNumber + NumberOfBuses);
- while (NextNumber > MaxNumberInRange) {
- ++BusNumberRanges;
- if (BusNumberRanges->Desc == ACPI_END_TAG_DESCRIPTOR) {
- return EFI_OUT_OF_RESOURCES;
- }
- NextNumber = (UINT8)(NextNumber + (BusNumberRanges->AddrRangeMin - (MaxNumberInRange + 1)));
- MaxNumberInRange = BusNumberRanges->AddrRangeMin + BusNumberRanges->AddrLen - 1;
- }
- *NextBusNumber = NextNumber;
- return EFI_SUCCESS;
- }
- BusNumberRanges++;
- }
- return EFI_OUT_OF_RESOURCES;
-}
-
-/**
- Scan pci bus and assign bus number to the given PCI bus system.
-
- @param Bridge Bridge device instance.
- @param StartBusNumber start point.
- @param SubBusNumber Point to sub bus number.
- @param PaddedBusRange Customized bus number.
-
- @retval EFI_SUCCESS Successfully scanned and assigned bus number.
- @retval other Some error occurred when scanning pci bus.
-
- @note Feature flag PcdPciBusHotplugDeviceSupport determine whether need support hotplug.
-
-**/
-EFI_STATUS
-PciScanBus (
- IN PCI_IO_DEVICE *Bridge,
- IN UINT8 StartBusNumber,
- OUT UINT8 *SubBusNumber,
- OUT UINT8 *PaddedBusRange
- )
-{
- EFI_STATUS Status;
- PCI_TYPE00 Pci;
- UINT8 Device;
- UINT8 Func;
- UINT64 Address;
- UINTN SecondBus;
- UINT16 Register;
- UINTN HpIndex;
- PCI_IO_DEVICE *PciDevice;
- EFI_EVENT Event;
- EFI_HPC_STATE State;
- UINT64 PciAddress;
- EFI_HPC_PADDING_ATTRIBUTES Attributes;
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptors;
- UINT16 BusRange;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
- BOOLEAN BusPadding;
- UINT32 TempReservedBusNum;
-
- PciRootBridgeIo = Bridge->PciRootBridgeIo;
- SecondBus = 0;
- Register = 0;
- State = 0;
- Attributes = (EFI_HPC_PADDING_ATTRIBUTES) 0;
- BusRange = 0;
- BusPadding = FALSE;
- PciDevice = NULL;
- PciAddress = 0;
-
- for (Device = 0; Device <= PCI_MAX_DEVICE; Device++) {
- TempReservedBusNum = 0;
- for (Func = 0; Func <= PCI_MAX_FUNC; Func++) {
-
- //
- // Check to see whether a pci device is present
- //
- Status = PciDevicePresent (
- PciRootBridgeIo,
- &Pci,
- StartBusNumber,
- Device,
- Func
- );
-
- if (EFI_ERROR (Status)) {
- continue;
- }
-
- //
- // Get the PCI device information
- //
- Status = PciSearchDevice (
- Bridge,
- &Pci,
- StartBusNumber,
- Device,
- Func,
- &PciDevice
- );
-
- ASSERT (!EFI_ERROR (Status));
-
- PciAddress = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, 0);
-
- if (!IS_PCI_BRIDGE (&Pci)) {
- //
- // PCI bridges will be called later
- // Here just need for PCI device or PCI to cardbus controller
- // EfiPciBeforeChildBusEnumeration for PCI Device Node
- //
- PreprocessController (
- PciDevice,
- PciDevice->BusNumber,
- PciDevice->DeviceNumber,
- PciDevice->FunctionNumber,
- EfiPciBeforeChildBusEnumeration
- );
- }
-
- if (FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- //
- // For Pci Hotplug controller devcie only
- //
- if (gPciHotPlugInit != NULL) {
- //
- // Check if it is a Hotplug PCI controller
- //
- if (IsRootPciHotPlugController (PciDevice->DevicePath, &HpIndex)) {
- gPciRootHpcData[HpIndex].Found = TRUE;
-
- if (!gPciRootHpcData[HpIndex].Initialized) {
-
- Status = CreateEventForHpc (HpIndex, &Event);
-
- ASSERT (!EFI_ERROR (Status));
-
- Status = gPciHotPlugInit->InitializeRootHpc (
- gPciHotPlugInit,
- gPciRootHpcPool[HpIndex].HpcDevicePath,
- PciAddress,
- Event,
- &State
- );
-
- PreprocessController (
- PciDevice,
- PciDevice->BusNumber,
- PciDevice->DeviceNumber,
- PciDevice->FunctionNumber,
- EfiPciBeforeChildBusEnumeration
- );
- }
- }
- }
- }
-
- if (IS_PCI_BRIDGE (&Pci) || IS_CARDBUS_BRIDGE (&Pci)) {
- //
- // For PPB
- //
- if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- //
- // If Hot Plug is not supported,
- // get the bridge information
- //
- Status = PciSearchDevice (
- Bridge,
- &Pci,
- StartBusNumber,
- Device,
- Func,
- &PciDevice
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
- } else {
- //
- // If Hot Plug is supported,
- // Get the bridge information
- //
- BusPadding = FALSE;
- if (gPciHotPlugInit != NULL) {
-
- if (IsRootPciHotPlugBus (PciDevice->DevicePath, &HpIndex)) {
-
- //
- // If it is initialized, get the padded bus range
- //
- Status = gPciHotPlugInit->GetResourcePadding (
- gPciHotPlugInit,
- gPciRootHpcPool[HpIndex].HpbDevicePath,
- PciAddress,
- &State,
- (VOID **) &Descriptors,
- &Attributes
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- BusRange = 0;
- Status = PciGetBusRange (
- &Descriptors,
- NULL,
- NULL,
- &BusRange
- );
-
- FreePool (Descriptors);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- BusPadding = TRUE;
- }
- }
- }
-
- Status = PciAllocateBusNumber (Bridge, *SubBusNumber, 1, SubBusNumber);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- SecondBus = *SubBusNumber;
-
- Register = (UINT16) ((SecondBus << 8) | (UINT16) StartBusNumber);
- Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, PCI_BRIDGE_PRIMARY_BUS_REGISTER_OFFSET);
-
- Status = PciRootBridgeIo->Pci.Write (
- PciRootBridgeIo,
- EfiPciWidthUint16,
- Address,
- 1,
- &Register
- );
-
-
- //
- // If it is PPB, resursively search down this bridge
- //
- if (IS_PCI_BRIDGE (&Pci)) {
-
- //
- // Temporarily initialize SubBusNumber to maximum bus number to ensure the
- // PCI configuration transaction to go through any PPB
- //
- Register = 0xFF;
- Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, PCI_BRIDGE_SUBORDINATE_BUS_REGISTER_OFFSET);
- Status = PciRootBridgeIo->Pci.Write (
- PciRootBridgeIo,
- EfiPciWidthUint8,
- Address,
- 1,
- &Register
- );
-
- //
- // Nofify EfiPciBeforeChildBusEnumeration for PCI Brige
- //
- PreprocessController (
- PciDevice,
- PciDevice->BusNumber,
- PciDevice->DeviceNumber,
- PciDevice->FunctionNumber,
- EfiPciBeforeChildBusEnumeration
- );
-
- Status = PciScanBus (
- PciDevice,
- (UINT8) (SecondBus),
- SubBusNumber,
- PaddedBusRange
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- if (FeaturePcdGet (PcdPciBusHotplugDeviceSupport) && BusPadding) {
- //
- // Ensure the device is enabled and initialized
- //
- if ((Attributes == EfiPaddingPciRootBridge) &&
- (State & EFI_HPC_STATE_ENABLED) != 0 &&
- (State & EFI_HPC_STATE_INITIALIZED) != 0) {
- *PaddedBusRange = (UINT8) ((UINT8) (BusRange) +*PaddedBusRange);
- } else {
- Status = PciAllocateBusNumber (PciDevice, *SubBusNumber, (UINT8) (BusRange), SubBusNumber);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
- }
-
- //
- // Set the current maximum bus number under the PPB
- //
- Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, PCI_BRIDGE_SUBORDINATE_BUS_REGISTER_OFFSET);
-
- Status = PciRootBridgeIo->Pci.Write (
- PciRootBridgeIo,
- EfiPciWidthUint8,
- Address,
- 1,
- SubBusNumber
- );
- } else {
- //
- // It is device. Check PCI IOV for Bus reservation
- // Go through each function, just reserve the MAX ReservedBusNum for one device
- //
- if (PcdGetBool (PcdSrIovSupport) && PciDevice->SrIovCapabilityOffset != 0) {
- if (TempReservedBusNum < PciDevice->ReservedBusNum) {
-
- Status = PciAllocateBusNumber (PciDevice, *SubBusNumber, (UINT8) (PciDevice->ReservedBusNum - TempReservedBusNum), SubBusNumber);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- TempReservedBusNum = PciDevice->ReservedBusNum;
-
- if (Func == 0) {
- DEBUG ((EFI_D_INFO, "PCI-IOV ScanBus - SubBusNumber - 0x%x\n", *SubBusNumber));
- } else {
- DEBUG ((EFI_D_INFO, "PCI-IOV ScanBus - SubBusNumber - 0x%x (Update)\n", *SubBusNumber));
- }
- }
- }
- }
-
- if (Func == 0 && !IS_PCI_MULTI_FUNC (&Pci)) {
-
- //
- // Skip sub functions, this is not a multi function device
- //
-
- Func = PCI_MAX_FUNC;
- }
- }
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Process Option Rom on the specified root bridge.
-
- @param Bridge Pci root bridge device instance.
-
- @retval EFI_SUCCESS Success process.
- @retval other Some error occurred when processing Option Rom on the root bridge.
-
-**/
-EFI_STATUS
-PciRootBridgeP2CProcess (
- IN PCI_IO_DEVICE *Bridge
- )
-{
- LIST_ENTRY *CurrentLink;
- PCI_IO_DEVICE *Temp;
- EFI_HPC_STATE State;
- UINT64 PciAddress;
- EFI_STATUS Status;
-
- CurrentLink = Bridge->ChildList.ForwardLink;
-
- while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {
-
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
-
- if (IS_CARDBUS_BRIDGE (&Temp->Pci)) {
-
- if (gPciHotPlugInit != NULL && Temp->Allocated && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
-
- //
- // Raise the EFI_IOB_PCI_HPC_INIT status code
- //
- REPORT_STATUS_CODE_WITH_DEVICE_PATH (
- EFI_PROGRESS_CODE,
- EFI_IO_BUS_PCI | EFI_IOB_PCI_HPC_INIT,
- Temp->DevicePath
- );
-
- PciAddress = EFI_PCI_ADDRESS (Temp->BusNumber, Temp->DeviceNumber, Temp->FunctionNumber, 0);
- Status = gPciHotPlugInit->InitializeRootHpc (
- gPciHotPlugInit,
- Temp->DevicePath,
- PciAddress,
- NULL,
- &State
- );
-
- if (!EFI_ERROR (Status)) {
- Status = PciBridgeEnumerator (Temp);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- continue;
-
- }
- }
-
- if (!IsListEmpty (&Temp->ChildList)) {
- Status = PciRootBridgeP2CProcess (Temp);
- }
-
- CurrentLink = CurrentLink->ForwardLink;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Process Option Rom on the specified host bridge.
-
- @param PciResAlloc Pointer to instance of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
-
- @retval EFI_SUCCESS Success process.
- @retval EFI_NOT_FOUND Can not find the root bridge instance.
- @retval other Some error occurred when processing Option Rom on the host bridge.
-
-**/
-EFI_STATUS
-PciHostBridgeP2CProcess (
- IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
- )
-{
- EFI_HANDLE RootBridgeHandle;
- PCI_IO_DEVICE *RootBridgeDev;
- EFI_STATUS Status;
-
- if (!FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- return EFI_SUCCESS;
- }
-
- RootBridgeHandle = NULL;
-
- while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
-
- //
- // Get RootBridg Device by handle
- //
- RootBridgeDev = GetRootBridgeByHandle (RootBridgeHandle);
-
- if (RootBridgeDev == NULL) {
- return EFI_NOT_FOUND;
- }
-
- Status = PciRootBridgeP2CProcess (RootBridgeDev);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- This function is used to enumerate the entire host bridge
- in a given platform.
-
- @param PciResAlloc A pointer to the PCI Host Resource Allocation protocol.
-
- @retval EFI_SUCCESS Successfully enumerated the host bridge.
- @retval EFI_OUT_OF_RESOURCES No enough memory available.
- @retval other Some error occurred when enumerating the host bridge.
-
-**/
-EFI_STATUS
-PciHostBridgeEnumerator (
- IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *PciResAlloc
- )
-{
- EFI_HANDLE RootBridgeHandle;
- PCI_IO_DEVICE *RootBridgeDev;
- EFI_STATUS Status;
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
- UINT16 MinBus;
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptors;
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Configuration;
- UINT8 StartBusNumber;
- LIST_ENTRY RootBridgeList;
- LIST_ENTRY *Link;
-
- if (FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- InitializeHotPlugSupport ();
- }
-
- InitializeListHead (&RootBridgeList);
-
- //
- // Notify the bus allocation phase is about to start
- //
- Status = NotifyPhase (PciResAlloc, EfiPciHostBridgeBeginBusAllocation);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- DEBUG((EFI_D_INFO, "PCI Bus First Scanning\n"));
- RootBridgeHandle = NULL;
- while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
-
- //
- // if a root bridge instance is found, create root bridge device for it
- //
-
- RootBridgeDev = CreateRootBridge (RootBridgeHandle);
-
- if (RootBridgeDev == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- //
- // Enumerate all the buses under this root bridge
- //
- Status = PciRootBridgeEnumerator (
- PciResAlloc,
- RootBridgeDev
- );
-
- if (gPciHotPlugInit != NULL && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- InsertTailList (&RootBridgeList, &(RootBridgeDev->Link));
- } else {
- DestroyRootBridge (RootBridgeDev);
- }
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- //
- // Notify the bus allocation phase is finished for the first time
- //
- NotifyPhase (PciResAlloc, EfiPciHostBridgeEndBusAllocation);
-
- if (gPciHotPlugInit != NULL && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
- //
- // Reset all assigned PCI bus number in all PPB
- //
- RootBridgeHandle = NULL;
- Link = GetFirstNode (&RootBridgeList);
- while ((PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) &&
- (!IsNull (&RootBridgeList, Link))) {
- RootBridgeDev = PCI_IO_DEVICE_FROM_LINK (Link);
- //
- // Get the Bus information
- //
- Status = PciResAlloc->StartBusEnumeration (
- PciResAlloc,
- RootBridgeHandle,
- (VOID **) &Configuration
- );
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Get the bus number to start with
- //
- StartBusNumber = (UINT8) (Configuration->AddrRangeMin);
-
- ResetAllPpbBusNumber (
- RootBridgeDev,
- StartBusNumber
- );
-
- FreePool (Configuration);
- Link = RemoveEntryList (Link);
- DestroyRootBridge (RootBridgeDev);
- }
-
- //
- // Wait for all HPC initialized
- //
- Status = AllRootHPCInitialized (STALL_1_SECOND * 15);
-
- if (EFI_ERROR (Status)) {
- DEBUG ((EFI_D_ERROR, "Some root HPC failed to initialize\n"));
- return Status;
- }
-
- //
- // Notify the bus allocation phase is about to start for the 2nd time
- //
- Status = NotifyPhase (PciResAlloc, EfiPciHostBridgeBeginBusAllocation);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- DEBUG((EFI_D_INFO, "PCI Bus Second Scanning\n"));
- RootBridgeHandle = NULL;
- while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
-
- //
- // if a root bridge instance is found, create root bridge device for it
- //
- RootBridgeDev = CreateRootBridge (RootBridgeHandle);
-
- if (RootBridgeDev == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- //
- // Enumerate all the buses under this root bridge
- //
- Status = PciRootBridgeEnumerator (
- PciResAlloc,
- RootBridgeDev
- );
-
- DestroyRootBridge (RootBridgeDev);
- if (EFI_ERROR (Status)) {
- return Status;
- }
- }
-
- //
- // Notify the bus allocation phase is to end for the 2nd time
- //
- NotifyPhase (PciResAlloc, EfiPciHostBridgeEndBusAllocation);
- }
-
- //
- // Notify the resource allocation phase is to start
- //
- Status = NotifyPhase (PciResAlloc, EfiPciHostBridgeBeginResourceAllocation);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- RootBridgeHandle = NULL;
- while (PciResAlloc->GetNextRootBridge (PciResAlloc, &RootBridgeHandle) == EFI_SUCCESS) {
-
- //
- // if a root bridge instance is found, create root bridge device for it
- //
- RootBridgeDev = CreateRootBridge (RootBridgeHandle);
-
- if (RootBridgeDev == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- Status = StartManagingRootBridge (RootBridgeDev);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- PciRootBridgeIo = RootBridgeDev->PciRootBridgeIo;
- Status = PciRootBridgeIo->Configuration (PciRootBridgeIo, (VOID **) &Descriptors);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = PciGetBusRange (&Descriptors, &MinBus, NULL, NULL);
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Determine root bridge attribute by calling interface of Pcihostbridge
- // protocol
- //
- DetermineRootBridgeAttributes (
- PciResAlloc,
- RootBridgeDev
- );
-
- //
- // Collect all the resource information under this root bridge
- // A database that records all the information about pci device subject to this
- // root bridge will then be created
- //
- Status = PciPciDeviceInfoCollector (
- RootBridgeDev,
- (UINT8) MinBus
- );
-
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- InsertRootBridge (RootBridgeDev);
-
- //
- // Record the hostbridge handle
- //
- AddHostBridgeEnumerator (RootBridgeDev->PciRootBridgeIo->ParentHandle);
- }
-
- return EFI_SUCCESS;
-}
|