+++ /dev/null
-/*++\r
-\r
-Copyright (c) 2006 - 2007, Intel Corporation\r
-All rights reserved. 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
-\r
-Module Name:\r
-\r
- PciHotPlugSupport.c\r
-\r
-Abstract:\r
-\r
-\r
-\r
-Revision History\r
-\r
---*/\r
-\r
-#include "Pcibus.h"\r
-#include "PciHotPlugSupport.h"\r
-\r
-EFI_PCI_HOT_PLUG_INIT_PROTOCOL *gPciHotPlugInit;\r
-EFI_HPC_LOCATION *gPciRootHpcPool;\r
-UINTN gPciRootHpcCount;\r
-ROOT_HPC_DATA *gPciRootHpcData;\r
-\r
-VOID\r
-EFIAPI\r
-PciHPCInitialized (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: Event - add argument and description to function comment\r
-// TODO: Context - add argument and description to function comment\r
-{\r
- ROOT_HPC_DATA *HpcData;\r
-\r
- HpcData = (ROOT_HPC_DATA *) Context;\r
- HpcData->Initialized = TRUE;\r
-\r
-}\r
-\r
-BOOLEAN\r
-EfiCompareDevicePath (\r
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath1,\r
- IN EFI_DEVICE_PATH_PROTOCOL *DevicePath2\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: DevicePath1 - add argument and description to function comment\r
-// TODO: DevicePath2 - add argument and description to function comment\r
-{\r
- UINTN Size1;\r
- UINTN Size2;\r
-\r
- Size1 = GetDevicePathSize (DevicePath1);\r
- Size2 = GetDevicePathSize (DevicePath2);\r
-\r
- if (Size1 != Size2) {\r
- return FALSE;\r
- }\r
-\r
- if (CompareMem (DevicePath1, DevicePath2, Size1)) {\r
- return FALSE;\r
- }\r
-\r
- return TRUE;\r
-}\r
-\r
-EFI_STATUS\r
-InitializeHotPlugSupport (\r
- VOID\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: EFI_UNSUPPORTED - add return value to function comment\r
-// TODO: EFI_OUT_OF_RESOURCES - add return value to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-{\r
- EFI_STATUS Status;\r
- EFI_HPC_LOCATION *HpcList;\r
- UINTN HpcCount;\r
-\r
- //\r
- // Locate the PciHotPlugInit Protocol\r
- // If it doesn't exist, that means there is no\r
- // hot plug controller supported on the platform\r
- // the PCI Bus driver is running on. HotPlug Support\r
- // is an optional feature, so absence of the protocol\r
- // won't incur the penalty\r
- //\r
- gPciHotPlugInit = NULL;\r
- gPciRootHpcPool = NULL;\r
- gPciRootHpcCount = 0;\r
- gPciRootHpcData = NULL;\r
-\r
- Status = gBS->LocateProtocol (\r
- &gEfiPciHotPlugInitProtocolGuid,\r
- NULL,\r
- (VOID **) &gPciHotPlugInit\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- Status = gPciHotPlugInit->GetRootHpcList (\r
- gPciHotPlugInit,\r
- &HpcCount,\r
- &HpcList\r
- );\r
-\r
- if (!EFI_ERROR (Status)) {\r
-\r
- gPciRootHpcPool = HpcList;\r
- gPciRootHpcCount = HpcCount;\r
- gPciRootHpcData = AllocateZeroPool (sizeof (ROOT_HPC_DATA) * gPciRootHpcCount);\r
- if (gPciRootHpcData == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-BOOLEAN\r
-IsRootPciHotPlugBus (\r
- IN EFI_DEVICE_PATH_PROTOCOL *HpbDevicePath,\r
- OUT UINTN *HpIndex\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
- HpcDevicePath - A pointer to the EFI_DEVICE_PATH_PROTOCOL.\r
- HpIndex - A pointer to the Index.\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: HpbDevicePath - add argument and description to function comment\r
-{\r
- UINTN Index;\r
-\r
- for (Index = 0; Index < gPciRootHpcCount; Index++) {\r
-\r
- if (EfiCompareDevicePath (gPciRootHpcPool[Index].HpbDevicePath, HpbDevicePath)) {\r
-\r
- if (HpIndex != NULL) {\r
- *HpIndex = Index;\r
- }\r
-\r
- return TRUE;\r
- }\r
- }\r
-\r
- return FALSE;\r
-}\r
-\r
-BOOLEAN\r
-IsRootPciHotPlugController (\r
- IN EFI_DEVICE_PATH_PROTOCOL *HpcDevicePath,\r
- OUT UINTN *HpIndex\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
- HpcDevicePath - A pointer to the EFI_DEVICE_PATH_PROTOCOL.\r
- HpIndex - A pointer to the Index.\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-{\r
- UINTN Index;\r
-\r
- for (Index = 0; Index < gPciRootHpcCount; Index++) {\r
-\r
- if (EfiCompareDevicePath (gPciRootHpcPool[Index].HpcDevicePath, HpcDevicePath)) {\r
-\r
- if (HpIndex != NULL) {\r
- *HpIndex = Index;\r
- }\r
-\r
- return TRUE;\r
- }\r
- }\r
-\r
- return FALSE;\r
-}\r
-\r
-EFI_STATUS\r
-CreateEventForHpc (\r
- IN UINTN HpIndex,\r
- OUT EFI_EVENT *Event\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: HpIndex - add argument and description to function comment\r
-// TODO: Event - add argument and description to function comment\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = gBS->CreateEvent (\r
- EVT_NOTIFY_SIGNAL,\r
- TPL_CALLBACK,\r
- PciHPCInitialized,\r
- gPciRootHpcData + HpIndex,\r
- &((gPciRootHpcData + HpIndex)->Event)\r
- );\r
-\r
- if (!EFI_ERROR (Status)) {\r
- *Event = (gPciRootHpcData + HpIndex)->Event;\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-AllRootHPCInitialized (\r
- IN UINTN TimeoutInMicroSeconds\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
- TimeoutInMicroSeconds - microseconds to wait for all root hpc's initialization\r
-\r
-Returns:\r
- EFI_SUCCESS - All root hpc's initialization is finished before the timeout\r
- EFI_TIMEOUT - Time out\r
-\r
---*/\r
-// TODO: TimeoutInMilliSeconds - add argument and description to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-// TODO: EFI_TIMEOUT - add return value to function comment\r
-{\r
- UINT32 Delay;\r
- UINTN Index;\r
-\r
- Delay = (UINT32) ((TimeoutInMicroSeconds / 30) + 1);\r
- do {\r
-\r
- for (Index = 0; Index < gPciRootHpcCount; Index++) {\r
-\r
- if (!gPciRootHpcData[Index].Initialized) {\r
- break;\r
- }\r
- }\r
-\r
- if (Index == gPciRootHpcCount) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- //\r
- // Stall for 30 us\r
- //\r
- gBS->Stall (30);\r
-\r
- Delay--;\r
-\r
- } while (Delay);\r
-\r
- return EFI_TIMEOUT;\r
-}\r
-\r
-EFI_STATUS\r
-IsSHPC (\r
- PCI_IO_DEVICE *PciIoDevice\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: PciIoDevice - add argument and description to function comment\r
-// TODO: EFI_NOT_FOUND - add return value to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-// TODO: EFI_NOT_FOUND - add return value to function comment\r
-{\r
-\r
- EFI_STATUS Status;\r
- UINT8 Offset;\r
-\r
- if (!PciIoDevice) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- Offset = 0;\r
- Status = LocateCapabilityRegBlock (\r
- PciIoDevice,\r
- EFI_PCI_CAPABILITY_ID_HOTPLUG,\r
- &Offset,\r
- NULL\r
- );\r
-\r
- //\r
- // If the PPB has the hot plug controller build-in,\r
- // then return TRUE;\r
- //\r
- if (!EFI_ERROR (Status)) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-EFI_STATUS\r
-GetResourcePaddingForHpb (\r
- IN PCI_IO_DEVICE *PciIoDevice\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: PciIoDevice - add argument and description to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-// TODO: EFI_NOT_FOUND - add return value to function comment\r
-{\r
- EFI_STATUS Status;\r
- EFI_HPC_STATE State;\r
- UINT64 PciAddress;\r
- EFI_HPC_PADDING_ATTRIBUTES Attributes;\r
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptors;\r
-\r
- Status = IsPciHotPlugBus (PciIoDevice);\r
-\r
- if (!EFI_ERROR (Status)) {\r
- PciAddress = EFI_PCI_ADDRESS (PciIoDevice->BusNumber, PciIoDevice->DeviceNumber, PciIoDevice->FunctionNumber, 0);\r
- Status = gPciHotPlugInit->GetResourcePadding (\r
- gPciHotPlugInit,\r
- PciIoDevice->DevicePath,\r
- PciAddress,\r
- &State,\r
- (VOID **) &Descriptors,\r
- &Attributes\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- if ((State & EFI_HPC_STATE_ENABLED) && (State & EFI_HPC_STATE_INITIALIZED)) {\r
- PciIoDevice->ResourcePaddingDescriptors = Descriptors;\r
- PciIoDevice->PaddingAttributes = Attributes;\r
- }\r
-\r
- return EFI_SUCCESS;\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-EFI_STATUS\r
-IsPciHotPlugBus (\r
- PCI_IO_DEVICE *PciIoDevice\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
-Arguments:\r
-\r
-Returns:\r
-\r
- None\r
-\r
---*/\r
-// TODO: PciIoDevice - add argument and description to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-// TODO: EFI_NOT_FOUND - add return value to function comment\r
-{\r
- BOOLEAN Result;\r
- EFI_STATUS Status;\r
-\r
- Status = IsSHPC (PciIoDevice);\r
-\r
- //\r
- // If the PPB has the hot plug controller build-in,\r
- // then return TRUE;\r
- //\r
- if (!EFI_ERROR (Status)) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- //\r
- // Otherwise, see if it is a Root HPC\r
- //\r
- Result = IsRootPciHotPlugBus (PciIoDevice->DevicePath, NULL);\r
-\r
- if (Result) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
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