/** @file\r
Internal library implementation for PCI Bus module.\r
\r
-Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r
(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
L"Unknow"\r
};\r
\r
+/**\r
+ Retrieve the max bus number that is assigned to the Root Bridge hierarchy.\r
+ It can support the case that there are multiple bus ranges.\r
+\r
+ @param Bridge Bridge device instance.\r
+\r
+ @retval The max bus number that is assigned to this Root Bridge hierarchy.\r
+\r
+**/\r
+UINT16\r
+PciGetMaxBusNumber (\r
+ IN PCI_IO_DEVICE *Bridge\r
+ )\r
+{\r
+ PCI_IO_DEVICE *RootBridge;\r
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BusNumberRanges;\r
+ UINT64 MaxNumberInRange;\r
+\r
+ //\r
+ // Get PCI Root Bridge device\r
+ //\r
+ RootBridge = Bridge;\r
+ while (RootBridge->Parent != NULL) {\r
+ RootBridge = RootBridge->Parent;\r
+ }\r
+ MaxNumberInRange = 0;\r
+ //\r
+ // Iterate the bus number ranges to get max PCI bus number\r
+ //\r
+ BusNumberRanges = RootBridge->BusNumberRanges;\r
+ while (BusNumberRanges->Desc != ACPI_END_TAG_DESCRIPTOR) {\r
+ MaxNumberInRange = BusNumberRanges->AddrRangeMin + BusNumberRanges->AddrLen - 1;\r
+ BusNumberRanges++;\r
+ }\r
+ return (UINT16) MaxNumberInRange;\r
+}\r
+\r
/**\r
Retrieve the PCI Card device BAR information via PciIo interface.\r
\r
BridgeResource->PciDev->PciBar[BridgeResource->Bar].BaseAddress,\r
BridgeResource->Length, BridgeResource->Alignment\r
));\r
- for ( Link = BridgeResource->ChildList.ForwardLink\r
- ; Link != &BridgeResource->ChildList\r
- ; Link = Link->ForwardLink\r
+ for ( Link = GetFirstNode (&BridgeResource->ChildList)\r
+ ; !IsNull (&BridgeResource->ChildList, Link)\r
+ ; Link = GetNextNode (&BridgeResource->ChildList, Link)\r
) {\r
Resource = RESOURCE_NODE_FROM_LINK (Link);\r
if (Resource->ResourceUsage == PciResUsageTypical) {\r
Bar = Resource->Virtual ? Resource->PciDev->VfPciBar : Resource->PciDev->PciBar;\r
DEBUG ((\r
- EFI_D_INFO, " Base = 0x%lx;\tLength = 0x%lx;\tAlignment = 0x%lx;\tOwner = %s ",\r
+ EFI_D_INFO, " Base = 0x%lx;\tLength = 0x%lx;\tAlignment = 0x%lx;\tOwner = %s [%02x|%02x|%02x:",\r
Bar[Resource->Bar].BaseAddress, Resource->Length, Resource->Alignment,\r
IS_PCI_BRIDGE (&Resource->PciDev->Pci) ? L"PPB" :\r
IS_CARDBUS_BRIDGE (&Resource->PciDev->Pci) ? L"P2C" :\r
- L"PCI"\r
+ L"PCI",\r
+ Resource->PciDev->BusNumber, Resource->PciDev->DeviceNumber,\r
+ Resource->PciDev->FunctionNumber\r
));\r
\r
if ((!IS_PCI_BRIDGE (&Resource->PciDev->Pci) && !IS_CARDBUS_BRIDGE (&Resource->PciDev->Pci)) ||\r
//\r
// The resource requirement comes from the device itself.\r
//\r
- DEBUG ((\r
- EFI_D_INFO, " [%02x|%02x|%02x:%02x]\n",\r
- Resource->PciDev->BusNumber, Resource->PciDev->DeviceNumber,\r
- Resource->PciDev->FunctionNumber, Bar[Resource->Bar].Offset\r
- ));\r
+ DEBUG ((EFI_D_INFO, "%02x]", Bar[Resource->Bar].Offset));\r
} else {\r
//\r
// The resource requirement comes from the subordinate devices.\r
//\r
- DEBUG ((\r
- EFI_D_INFO, " [%02x|%02x|%02x:**]\n",\r
- Resource->PciDev->BusNumber, Resource->PciDev->DeviceNumber,\r
- Resource->PciDev->FunctionNumber\r
- ));\r
+ DEBUG ((EFI_D_INFO, "**]"));\r
}\r
} else {\r
- DEBUG ((EFI_D_INFO, " Padding:Length = 0x%lx;\tAlignment = 0x%lx\n", Resource->Length, Resource->Alignment));\r
+ DEBUG ((EFI_D_INFO, " Base = Padding;\tLength = 0x%lx;\tAlignment = 0x%lx", Resource->Length, Resource->Alignment));\r
+ }\r
+ if (BridgeResource->ResType != Resource->ResType) {\r
+ DEBUG ((EFI_D_INFO, "; Type = %s", mBarTypeStr[MIN (Resource->ResType, PciBarTypeMaxType)]));\r
}\r
+ DEBUG ((EFI_D_INFO, "\n"));\r
}\r
}\r
}\r
\r
/**\r
Find the corresponding resource node for the Device in child list of BridgeResource.\r
- \r
- @param[in] Device Pointer to PCI_IO_DEVICE.\r
- @param[in] BridgeResource Pointer to PCI_RESOURCE_NODE.\r
- \r
- @return !NULL The corresponding resource node for the Device.\r
- @return NULL No corresponding resource node for the Device.\r
+\r
+ @param[in] Device Pointer to PCI_IO_DEVICE.\r
+ @param[in] BridgeResource Pointer to PCI_RESOURCE_NODE.\r
+ @param[out] DeviceResources Pointer to a buffer to receive resources for the Device.\r
+\r
+ @return Count of the resource descriptors returned.\r
**/\r
-PCI_RESOURCE_NODE *\r
+UINTN\r
FindResourceNode (\r
- IN PCI_IO_DEVICE *Device,\r
- IN PCI_RESOURCE_NODE *BridgeResource\r
+ IN PCI_IO_DEVICE *Device,\r
+ IN PCI_RESOURCE_NODE *BridgeResource,\r
+ OUT PCI_RESOURCE_NODE **DeviceResources OPTIONAL\r
)\r
{\r
LIST_ENTRY *Link;\r
PCI_RESOURCE_NODE *Resource;\r
+ UINTN Count;\r
\r
+ Count = 0;\r
for ( Link = BridgeResource->ChildList.ForwardLink\r
; Link != &BridgeResource->ChildList\r
; Link = Link->ForwardLink\r
) {\r
Resource = RESOURCE_NODE_FROM_LINK (Link);\r
if (Resource->PciDev == Device) {\r
- return Resource;\r
+ if (DeviceResources != NULL) {\r
+ DeviceResources[Count] = Resource;\r
+ }\r
+ Count++;\r
}\r
}\r
\r
- return NULL;\r
+ return Count;\r
}\r
\r
/**\r
Dump the resource map of all the devices under Bridge.\r
- \r
- @param[in] Bridge Bridge device instance.\r
- @param[in] IoNode IO resource descriptor for the bridge device.\r
- @param[in] Mem32Node Mem32 resource descriptor for the bridge device.\r
- @param[in] PMem32Node PMem32 resource descriptor for the bridge device.\r
- @param[in] Mem64Node Mem64 resource descriptor for the bridge device.\r
- @param[in] PMem64Node PMem64 resource descriptor for the bridge device.\r
+\r
+ @param[in] Bridge Bridge device instance.\r
+ @param[in] Resources Resource descriptors for the bridge device.\r
+ @param[in] ResourceCount Count of resource descriptors.\r
**/\r
VOID\r
DumpResourceMap (\r
IN PCI_IO_DEVICE *Bridge,\r
- IN PCI_RESOURCE_NODE *IoNode,\r
- IN PCI_RESOURCE_NODE *Mem32Node,\r
- IN PCI_RESOURCE_NODE *PMem32Node,\r
- IN PCI_RESOURCE_NODE *Mem64Node,\r
- IN PCI_RESOURCE_NODE *PMem64Node\r
+ IN PCI_RESOURCE_NODE **Resources,\r
+ IN UINTN ResourceCount\r
)\r
{\r
- EFI_STATUS Status;\r
- LIST_ENTRY *Link;\r
- PCI_IO_DEVICE *Device;\r
- PCI_RESOURCE_NODE *ChildIoNode;\r
- PCI_RESOURCE_NODE *ChildMem32Node;\r
- PCI_RESOURCE_NODE *ChildPMem32Node;\r
- PCI_RESOURCE_NODE *ChildMem64Node;\r
- PCI_RESOURCE_NODE *ChildPMem64Node;\r
- CHAR16 *Str;\r
+ EFI_STATUS Status;\r
+ LIST_ENTRY *Link;\r
+ PCI_IO_DEVICE *Device;\r
+ UINTN Index;\r
+ CHAR16 *Str;\r
+ PCI_RESOURCE_NODE **ChildResources;\r
+ UINTN ChildResourceCount;\r
\r
DEBUG ((EFI_D_INFO, "PciBus: Resource Map for "));\r
\r
}\r
}\r
\r
- DumpBridgeResource (IoNode);\r
- DumpBridgeResource (Mem32Node);\r
- DumpBridgeResource (PMem32Node);\r
- DumpBridgeResource (Mem64Node);\r
- DumpBridgeResource (PMem64Node);\r
+ for (Index = 0; Index < ResourceCount; Index++) {\r
+ DumpBridgeResource (Resources[Index]);\r
+ }\r
DEBUG ((EFI_D_INFO, "\n"));\r
\r
for ( Link = Bridge->ChildList.ForwardLink\r
Device = PCI_IO_DEVICE_FROM_LINK (Link);\r
if (IS_PCI_BRIDGE (&Device->Pci)) {\r
\r
- ChildIoNode = (IoNode == NULL ? NULL : FindResourceNode (Device, IoNode));\r
- ChildMem32Node = (Mem32Node == NULL ? NULL : FindResourceNode (Device, Mem32Node));\r
- ChildPMem32Node = (PMem32Node == NULL ? NULL : FindResourceNode (Device, PMem32Node));\r
- ChildMem64Node = (Mem64Node == NULL ? NULL : FindResourceNode (Device, Mem64Node));\r
- ChildPMem64Node = (PMem64Node == NULL ? NULL : FindResourceNode (Device, PMem64Node));\r
-\r
- DumpResourceMap (\r
- Device,\r
- ChildIoNode,\r
- ChildMem32Node,\r
- ChildPMem32Node,\r
- ChildMem64Node,\r
- ChildPMem64Node\r
- );\r
+ ChildResourceCount = 0;\r
+ for (Index = 0; Index < ResourceCount; Index++) {\r
+ ChildResourceCount += FindResourceNode (Device, Resources[Index], NULL);\r
+ }\r
+ ChildResources = AllocatePool (sizeof (PCI_RESOURCE_NODE *) * ChildResourceCount);\r
+ ASSERT (ChildResources != NULL);\r
+ ChildResourceCount = 0;\r
+ for (Index = 0; Index < ResourceCount; Index++) {\r
+ ChildResourceCount += FindResourceNode (Device, Resources[Index], &ChildResources[ChildResourceCount]);\r
+ }\r
+\r
+ DumpResourceMap (Device, ChildResources, ChildResourceCount);\r
+ FreePool (ChildResources);\r
}\r
}\r
}\r
//\r
\r
//\r
- // If non-stardard PCI Bridge I/O window alignment is supported,\r
+ // If non-standard PCI Bridge I/O window alignment is supported,\r
// set I/O aligment to minimum possible alignment for root bridge.\r
//\r
IoBridge = CreateResourceNode (\r
}\r
\r
//\r
- // Based on the all the resource tree, contruct ACPI resource node to\r
+ // Based on the all the resource tree, construct ACPI resource node to\r
// submit the resource aperture to pci host bridge protocol\r
//\r
Status = ConstructAcpiResourceRequestor (\r
// Create the entire system resource map from the information collected by\r
// enumerator. Several resource tree was created\r
//\r
- IoBridge = FindResourceNode (RootBridgeDev, &IoPool);\r
- Mem32Bridge = FindResourceNode (RootBridgeDev, &Mem32Pool);\r
- PMem32Bridge = FindResourceNode (RootBridgeDev, &PMem32Pool);\r
- Mem64Bridge = FindResourceNode (RootBridgeDev, &Mem64Pool);\r
- PMem64Bridge = FindResourceNode (RootBridgeDev, &PMem64Pool);\r
+ FindResourceNode (RootBridgeDev, &IoPool, &IoBridge);\r
+ FindResourceNode (RootBridgeDev, &Mem32Pool, &Mem32Bridge);\r
+ FindResourceNode (RootBridgeDev, &PMem32Pool, &PMem32Bridge);\r
+ FindResourceNode (RootBridgeDev, &Mem64Pool, &Mem64Bridge);\r
+ FindResourceNode (RootBridgeDev, &PMem64Pool, &PMem64Bridge);\r
\r
ASSERT (IoBridge != NULL);\r
ASSERT (Mem32Bridge != NULL);\r
// Dump the resource map for current root bridge\r
//\r
DEBUG_CODE (\r
- DumpResourceMap (\r
- RootBridgeDev,\r
- IoBridge,\r
- Mem32Bridge,\r
- PMem32Bridge,\r
- Mem64Bridge,\r
- PMem64Bridge\r
- );\r
+ PCI_RESOURCE_NODE *Resources[5];\r
+ Resources[0] = IoBridge;\r
+ Resources[1] = Mem32Bridge;\r
+ Resources[2] = PMem32Bridge;\r
+ Resources[3] = Mem64Bridge;\r
+ Resources[4] = PMem64Bridge;\r
+ DumpResourceMap (RootBridgeDev, Resources, ARRAY_SIZE (Resources));\r
);\r
\r
FreePool (AcpiConfig);\r
UINT8 Device;\r
UINT8 Func;\r
UINT64 Address;\r
- UINTN SecondBus;\r
+ UINT8 SecondBus;\r
+ UINT8 PaddedSubBus;\r
UINT16 Register;\r
UINTN HpIndex;\r
PCI_IO_DEVICE *PciDevice;\r
UINT64 PciAddress;\r
EFI_HPC_PADDING_ATTRIBUTES Attributes;\r
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptors;\r
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *NextDescriptors;\r
UINT16 BusRange;\r
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r
BOOLEAN BusPadding;\r
BusPadding = FALSE;\r
if (gPciHotPlugInit != NULL) {\r
\r
- if (IsRootPciHotPlugBus (PciDevice->DevicePath, &HpIndex)) {\r
+ if (IsPciHotPlugBus (PciDevice)) {\r
\r
//\r
// If it is initialized, get the padded bus range\r
//\r
Status = gPciHotPlugInit->GetResourcePadding (\r
gPciHotPlugInit,\r
- gPciRootHpcPool[HpIndex].HpbDevicePath,\r
+ PciDevice->DevicePath,\r
PciAddress,\r
&State,\r
(VOID **) &Descriptors,\r
}\r
\r
BusRange = 0;\r
+ NextDescriptors = Descriptors;\r
Status = PciGetBusRange (\r
- &Descriptors,\r
+ &NextDescriptors,\r
NULL,\r
NULL,\r
&BusRange\r
\r
FreePool (Descriptors);\r
\r
- if (EFI_ERROR (Status)) {\r
+ if (!EFI_ERROR (Status)) {\r
+ BusPadding = TRUE;\r
+ } else if (Status != EFI_NOT_FOUND) {\r
+ //\r
+ // EFI_NOT_FOUND is not a real error. It indicates no bus number padding requested.\r
+ //\r
return Status;\r
}\r
-\r
- BusPadding = TRUE;\r
}\r
}\r
}\r
// Temporarily initialize SubBusNumber to maximum bus number to ensure the\r
// PCI configuration transaction to go through any PPB\r
//\r
- Register = 0xFF;\r
+ Register = PciGetMaxBusNumber (Bridge);\r
Address = EFI_PCI_ADDRESS (StartBusNumber, Device, Func, PCI_BRIDGE_SUBORDINATE_BUS_REGISTER_OFFSET);\r
Status = PciRootBridgeIo->Pci.Write (\r
PciRootBridgeIo,\r
\r
Status = PciScanBus (\r
PciDevice,\r
- (UINT8) (SecondBus),\r
+ SecondBus,\r
SubBusNumber,\r
PaddedBusRange\r
);\r
if ((Attributes == EfiPaddingPciRootBridge) &&\r
(State & EFI_HPC_STATE_ENABLED) != 0 &&\r
(State & EFI_HPC_STATE_INITIALIZED) != 0) {\r
- *PaddedBusRange = (UINT8) ((UINT8) (BusRange) +*PaddedBusRange);\r
+ *PaddedBusRange = (UINT8) ((UINT8) (BusRange) + *PaddedBusRange);\r
} else {\r
- Status = PciAllocateBusNumber (PciDevice, *SubBusNumber, (UINT8) (BusRange), SubBusNumber);\r
+ //\r
+ // Reserve the larger one between the actual occupied bus number and padded bus number\r
+ //\r
+ Status = PciAllocateBusNumber (PciDevice, SecondBus, (UINT8) (BusRange), &PaddedSubBus);\r
if (EFI_ERROR (Status)) {\r
return Status;\r
}\r
+ *SubBusNumber = MAX (PaddedSubBus, *SubBusNumber);\r
}\r
}\r
\r
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