/** @file\r
- Supporting functions implementaion for PCI devices management.\r
+ Supporting functions implementation for PCI devices management.\r
\r
-Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r
+(C) Copyright 2018 Hewlett Packard Enterprise Development LP<BR>\r
+SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
//\r
LIST_ENTRY mPciDevicePool;\r
\r
-/**\r
- Disable Bus Master Enable bit in all devices in the list.\r
-\r
- @param Devices A device list.\r
-**/\r
-VOID\r
-DisableBmeOnTree (\r
- IN LIST_ENTRY *Devices\r
- )\r
-{\r
- LIST_ENTRY *Link;\r
- PCI_IO_DEVICE *PciIoDevice;\r
- UINT16 Command;\r
-\r
- for ( Link = GetFirstNode (Devices)\r
- ; !IsNull (Devices, Link)\r
- ; Link = GetNextNode (Devices, Link)\r
- ) {\r
- PciIoDevice = PCI_IO_DEVICE_FROM_LINK (Link);\r
- //\r
- // Turn off all children's Bus Master, if any\r
- //\r
- DisableBmeOnTree (&PciIoDevice->ChildList);\r
-\r
- //\r
- // If this is a device that supports BME, disable BME on this device.\r
- //\r
- if ((PciIoDevice->Supports & EFI_PCI_IO_ATTRIBUTE_BUS_MASTER) != 0) {\r
- PCI_READ_COMMAND_REGISTER(PciIoDevice, &Command);\r
- if ((Command & EFI_PCI_COMMAND_BUS_MASTER) != 0) {\r
- Command &= ~EFI_PCI_COMMAND_BUS_MASTER;\r
- PCI_SET_COMMAND_REGISTER (PciIoDevice, Command);\r
- DEBUG ((\r
- DEBUG_INFO," %02x %02x %02x %04x\n",\r
- PciIoDevice->BusNumber, PciIoDevice->DeviceNumber, PciIoDevice->FunctionNumber,\r
- Command\r
- ));\r
- }\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Exit Boot Services Event notification handler.\r
-\r
- Disable Bus Master on any that were enabled during BDS.\r
-\r
- @param[in] Event Event whose notification function is being invoked.\r
- @param[in] Context Pointer to the notification function's context.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-OnExitBootServices (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- DEBUG ((\r
- DEBUG_INFO,\r
- "PciBus: Disable Bus Master of all devices...\n"\r
- " Bus# Device# Function# NewCommand\n"\r
- ));\r
- DisableBmeOnTree(&mPciDevicePool);\r
-}\r
-\r
/**\r
Initialize the PCI devices pool.\r
\r
VOID\r
)\r
{\r
- EFI_EVENT ExitBootServicesEvent;\r
- EFI_STATUS Status;\r
-\r
InitializeListHead (&mPciDevicePool);\r
-\r
- //\r
- // DisableBME on ExitBootServices should be synchonized with any IOMMU ExitBootServices routine.\r
- // DisableBME should be run before the IOMMU protections are disabled.\r
- // One way to do this is to ensure that the IOMMU ExitBootServices callback runs at TPL_CALLBACK.\r
- //\r
- Status = gBS->CreateEventEx (\r
- EVT_NOTIFY_SIGNAL,\r
- TPL_NOTIFY,\r
- OnExitBootServices,\r
- NULL,\r
- &gEfiEventExitBootServicesGuid,\r
- &ExitBootServicesEvent\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_ERROR, "PciBus: Unable to hook ExitBootServices event - %r\n", Status));\r
- }\r
}\r
\r
/**\r
}\r
\r
/**\r
- Destroy root bridge and remove it from deivce tree.\r
+ Destroy root bridge and remove it from device tree.\r
\r
@param RootBridge The bridge want to be removed.\r
\r
\r
All direct or indirect allocated resource for this node will be freed.\r
\r
- @param PciIoDevice A pointer to the PCI_IO_DEVICE to be destoried.\r
+ @param PciIoDevice A pointer to the PCI_IO_DEVICE to be destroyed.\r
\r
**/\r
VOID\r
FreePool (PciIoDevice->DevicePath);\r
}\r
\r
+ if (PciIoDevice->BusNumberRanges != NULL) {\r
+ FreePool (PciIoDevice->BusNumberRanges);\r
+ }\r
+\r
FreePool (PciIoDevice);\r
}\r
\r
\r
@param Controller Root bridge handle.\r
\r
- @retval EFI_SUCCESS Destory all devcie nodes successfully.\r
+ @retval EFI_SUCCESS Destroy all device nodes successfully.\r
@retval EFI_NOT_FOUND Cannot find any PCI device under specified\r
root bridge.\r
\r
EFI_STATUS Status;\r
VOID *PlatformOpRomBuffer;\r
UINTN PlatformOpRomSize;\r
- UINT8 PciExpressCapRegOffset;\r
EFI_PCI_IO_PROTOCOL *PciIo;\r
UINT8 Data8;\r
BOOLEAN HasEfiImage;\r
return Status;\r
}\r
\r
- //\r
- // Detect if PCI Express Device\r
- //\r
- PciExpressCapRegOffset = 0;\r
- Status = LocateCapabilityRegBlock (\r
- PciIoDevice,\r
- EFI_PCI_CAPABILITY_ID_PCIEXP,\r
- &PciExpressCapRegOffset,\r
- NULL\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- PciIoDevice->IsPciExp = TRUE;\r
- }\r
-\r
//\r
// Force Interrupt line to "Unknown" or "No Connection"\r
//\r
PciIo = &(PciIoDevice->PciIo);\r
Data8 = PCI_INT_LINE_UNKNOWN;\r
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint8, 0x3C, 1, &Data8);\r
- \r
+\r
//\r
// Process OpRom\r
//\r
);\r
if (!EFI_ERROR (Status)) {\r
PciIoDevice->EmbeddedRom = FALSE;\r
- PciIoDevice->RomSize = PlatformOpRomSize;\r
+ PciIoDevice->RomSize = (UINT32) PlatformOpRomSize;\r
PciIoDevice->PciIo.RomSize = PlatformOpRomSize;\r
PciIoDevice->PciIo.RomImage = PlatformOpRomBuffer;\r
//\r
);\r
if (!EFI_ERROR (Status)) {\r
PciIoDevice->EmbeddedRom = FALSE;\r
- PciIoDevice->RomSize = PlatformOpRomSize;\r
+ PciIoDevice->RomSize = (UINT32) PlatformOpRomSize;\r
PciIoDevice->PciIo.RomSize = PlatformOpRomSize;\r
PciIoDevice->PciIo.RomImage = PlatformOpRomBuffer;\r
//\r
PciIoDevice->PciIo.RomImage,\r
PciIoDevice->PciIo.RomSize\r
);\r
- } \r
+ }\r
}\r
}\r
\r
0,\r
&Supports\r
);\r
- //\r
- // By default every bridge's IO and MMIO spaces are enabled.\r
- // Bridge's Bus Master will be enabled when any device behind it requests\r
- // to enable Bus Master.\r
- //\r
- Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_IO | EFI_PCI_IO_ATTRIBUTE_MEMORY);\r
+ Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;\r
PciIoDevice->PciIo.Attributes (\r
&(PciIoDevice->PciIo),\r
EfiPciIoAttributeOperationEnable,\r
0,\r
&Supports\r
);\r
- //\r
- // By default every bridge's IO and MMIO spaces are enabled.\r
- // Bridge's Bus Master will be enabled when any device behind it requests\r
- // to enable Bus Master.\r
- //\r
- Supports &= (UINT64) (EFI_PCI_IO_ATTRIBUTE_IO | EFI_PCI_IO_ATTRIBUTE_MEMORY);\r
+ Supports &= (UINT64)EFI_PCI_DEVICE_ENABLE;\r
PciIoDevice->PciIo.Attributes (\r
&(PciIoDevice->PciIo),\r
EfiPciIoAttributeOperationEnable,\r
/**\r
Create root bridge device.\r
\r
- @param RootBridgeHandle Specified root bridge hanle.\r
+ @param RootBridgeHandle Specified root bridge handle.\r
\r
@return The crated root bridge device instance, NULL means no\r
root bridge device instance created.\r
}\r
\r
/**\r
- Judege whether Pci device existed.\r
+ Judge whether Pci device existed.\r
\r
- @param Bridge Parent bridege instance.\r
+ @param Bridge Parent bridge instance.\r
@param PciIoDevice Device instance.\r
\r
@retval TRUE Pci device existed.\r
}\r
\r
/**\r
- Get the active VGA device on the same segment.\r
+ Get the active VGA device on the specified Host Bridge.\r
\r
- @param VgaDevice PCI IO instance for the VGA device.\r
+ @param HostBridgeHandle Host Bridge handle.\r
\r
- @return The active VGA device on the same segment.\r
+ @return The active VGA device on the specified Host Bridge.\r
\r
**/\r
PCI_IO_DEVICE *\r
-ActiveVGADeviceOnTheSameSegment (\r
- IN PCI_IO_DEVICE *VgaDevice\r
+LocateVgaDeviceOnHostBridge (\r
+ IN EFI_HANDLE HostBridgeHandle\r
)\r
{\r
LIST_ENTRY *CurrentLink;\r
- PCI_IO_DEVICE *Temp;\r
+ PCI_IO_DEVICE *PciIoDevice;\r
\r
CurrentLink = mPciDevicePool.ForwardLink;\r
\r
while (CurrentLink != NULL && CurrentLink != &mPciDevicePool) {\r
\r
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r
+ PciIoDevice = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r
\r
- if (Temp->PciRootBridgeIo->SegmentNumber == VgaDevice->PciRootBridgeIo->SegmentNumber) {\r
+ if (PciIoDevice->PciRootBridgeIo->ParentHandle== HostBridgeHandle) {\r
\r
- Temp = ActiveVGADeviceOnTheRootBridge (Temp);\r
+ PciIoDevice = LocateVgaDevice (PciIoDevice);\r
\r
- if (Temp != NULL) {\r
- return Temp;\r
+ if (PciIoDevice != NULL) {\r
+ return PciIoDevice;\r
}\r
}\r
\r
}\r
\r
/**\r
- Get the active VGA device on the root bridge.\r
+ Locate the active VGA device under the bridge.\r
\r
- @param RootBridge PCI IO instance for the root bridge.\r
+ @param Bridge PCI IO instance for the bridge.\r
\r
@return The active VGA device.\r
\r
**/\r
PCI_IO_DEVICE *\r
-ActiveVGADeviceOnTheRootBridge (\r
- IN PCI_IO_DEVICE *RootBridge\r
+LocateVgaDevice (\r
+ IN PCI_IO_DEVICE *Bridge\r
)\r
{\r
LIST_ENTRY *CurrentLink;\r
- PCI_IO_DEVICE *Temp;\r
+ PCI_IO_DEVICE *PciIoDevice;\r
\r
- CurrentLink = RootBridge->ChildList.ForwardLink;\r
+ CurrentLink = Bridge->ChildList.ForwardLink;\r
\r
- while (CurrentLink != NULL && CurrentLink != &RootBridge->ChildList) {\r
+ while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {\r
\r
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r
+ PciIoDevice = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r
\r
- if (IS_PCI_VGA(&Temp->Pci) &&\r
- (Temp->Attributes &\r
+ if (IS_PCI_VGA(&PciIoDevice->Pci) &&\r
+ (PciIoDevice->Attributes &\r
(EFI_PCI_IO_ATTRIBUTE_VGA_MEMORY |\r
EFI_PCI_IO_ATTRIBUTE_VGA_IO |\r
EFI_PCI_IO_ATTRIBUTE_VGA_IO_16)) != 0) {\r
- return Temp;\r
+ return PciIoDevice;\r
}\r
\r
- if (IS_PCI_BRIDGE (&Temp->Pci)) {\r
+ if (IS_PCI_BRIDGE (&PciIoDevice->Pci)) {\r
\r
- Temp = ActiveVGADeviceOnTheRootBridge (Temp);\r
+ PciIoDevice = LocateVgaDevice (PciIoDevice);\r
\r
- if (Temp != NULL) {\r
- return Temp;\r
+ if (PciIoDevice != NULL) {\r
+ return PciIoDevice;\r
}\r
}\r
\r
return NULL;\r
}\r
\r
-\r
-/**\r
- Get HPC PCI address according to its device path.\r
-\r
- @param RootBridge Root bridege Io instance.\r
- @param RemainingDevicePath Given searching device path.\r
- @param PciAddress Buffer holding searched result.\r
-\r
- @retval EFI_SUCCESS PCI address was stored in PciAddress\r
- @retval EFI_NOT_FOUND Can not find the specific device path.\r
-\r
-**/\r
-EFI_STATUS\r
-GetHpcPciAddressFromRootBridge (\r
- IN PCI_IO_DEVICE *RootBridge,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath,\r
- OUT UINT64 *PciAddress\r
- )\r
-{\r
- EFI_DEV_PATH_PTR Node;\r
- PCI_IO_DEVICE *Temp;\r
- EFI_DEVICE_PATH_PROTOCOL *CurrentDevicePath;\r
- LIST_ENTRY *CurrentLink;\r
- BOOLEAN MisMatch;\r
-\r
- MisMatch = FALSE;\r
-\r
- CurrentDevicePath = RemainingDevicePath;\r
- Node.DevPath = CurrentDevicePath;\r
- Temp = NULL;\r
-\r
- while (!IsDevicePathEnd (CurrentDevicePath)) {\r
-\r
- CurrentLink = RootBridge->ChildList.ForwardLink;\r
- Node.DevPath = CurrentDevicePath;\r
-\r
- while (CurrentLink != NULL && CurrentLink != &RootBridge->ChildList) {\r
- Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);\r
-\r
- if (Node.Pci->Device == Temp->DeviceNumber &&\r
- Node.Pci->Function == Temp->FunctionNumber) {\r
- RootBridge = Temp;\r
- break;\r
- }\r
-\r
- CurrentLink = CurrentLink->ForwardLink;\r
- }\r
-\r
- //\r
- // Check if we find the bridge\r
- //\r
- if (CurrentLink == &RootBridge->ChildList) {\r
-\r
- MisMatch = TRUE;\r
- break;\r
-\r
- }\r
-\r
- CurrentDevicePath = NextDevicePathNode (CurrentDevicePath);\r
- }\r
-\r
- if (MisMatch) {\r
-\r
- CurrentDevicePath = NextDevicePathNode (CurrentDevicePath);\r
-\r
- if (IsDevicePathEnd (CurrentDevicePath)) {\r
- *PciAddress = EFI_PCI_ADDRESS (RootBridge->BusNumber, Node.Pci->Device, Node.Pci->Function, 0);\r
- return EFI_SUCCESS;\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- if (Temp != NULL) {\r
- *PciAddress = EFI_PCI_ADDRESS (Temp->BusNumber, Temp->DeviceNumber, Temp->FunctionNumber, 0);\r
- } else {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-\r
-}\r
-\r
projects / mirror_edk2.git / blobdiff