+++ /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
- PciBus.c\r
-\r
-Abstract:\r
-\r
- PCI Bus Driver\r
-\r
-Revision History\r
-\r
---*/\r
-\r
-#include "pcibus.h"\r
-\r
-//\r
-// PCI Bus Driver Global Variables\r
-//\r
-\r
-EFI_DRIVER_BINDING_PROTOCOL gPciBusDriverBinding = {\r
- PciBusDriverBindingSupported,\r
- PciBusDriverBindingStart,\r
- PciBusDriverBindingStop,\r
- 0xa,\r
- NULL,\r
- NULL\r
-};\r
-\r
-EFI_HANDLE gPciHostBrigeHandles[PCI_MAX_HOST_BRIDGE_NUM];\r
-UINTN gPciHostBridgeNumber;\r
-BOOLEAN gFullEnumeration;\r
-UINT64 gAllOne = 0xFFFFFFFFFFFFFFFFULL;\r
-UINT64 gAllZero = 0;\r
-\r
-EFI_PCI_PLATFORM_PROTOCOL *gPciPlatformProtocol;\r
-\r
-//\r
-// PCI Bus Driver Support Functions\r
-//\r
-EFI_STATUS\r
-EFIAPI\r
-PciBusEntryPoint (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Initialize the global variables\r
- publish the driver binding protocol\r
-\r
-Arguments:\r
-\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS\r
- EFI_DEVICE_ERROR\r
-\r
---*/\r
-// TODO: ImageHandle - add argument and description to function comment\r
-// TODO: SystemTable - add argument and description to function comment\r
-{\r
- EFI_STATUS Status;\r
-\r
- InitializePciDevicePool ();\r
-\r
- gFullEnumeration = TRUE;\r
-\r
- gPciHostBridgeNumber = 0;\r
- \r
- //\r
- // Install driver model protocol(s).\r
- //\r
- Status = EfiLibInstallAllDriverProtocols (\r
- ImageHandle,\r
- SystemTable,\r
- &gPciBusDriverBinding,\r
- ImageHandle,\r
- &gPciBusComponentName,\r
- NULL,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- InstallHotPlugRequestProtocol (&Status);\r
- \r
- return Status;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-PciBusDriverBindingSupported (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Controller,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Check to see if pci bus driver supports the given controller\r
-\r
-Arguments:\r
-\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Controller,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
-\r
-Returns:\r
-\r
- EFI_SUCCESS\r
-\r
---*/\r
-// TODO: This - add argument and description to function comment\r
-// TODO: Controller - add argument and description to function comment\r
-// TODO: RemainingDevicePath - add argument and description to function comment\r
-// TODO: EFI_UNSUPPORTED - add return value to function comment\r
-{\r
- EFI_STATUS Status;\r
- EFI_DEVICE_PATH_PROTOCOL *ParentDevicePath;\r
- EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;\r
- EFI_DEV_PATH_PTR Node;\r
-\r
- if (RemainingDevicePath != NULL) {\r
- Node.DevPath = RemainingDevicePath;\r
- if (Node.DevPath->Type != HARDWARE_DEVICE_PATH ||\r
- Node.DevPath->SubType != HW_PCI_DP ||\r
- DevicePathNodeLength(Node.DevPath) != sizeof(PCI_DEVICE_PATH)) {\r
- return EFI_UNSUPPORTED;\r
- }\r
- }\r
- //\r
- // Open the IO Abstraction(s) needed to perform the supported test\r
- //\r
- Status = gBS->OpenProtocol (\r
- Controller,\r
- &gEfiDevicePathProtocolGuid,\r
- (VOID **) &ParentDevicePath,\r
- This->DriverBindingHandle,\r
- Controller,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- if (Status == EFI_ALREADY_STARTED) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- gBS->CloseProtocol (\r
- Controller,\r
- &gEfiDevicePathProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
-\r
- Status = gBS->OpenProtocol (\r
- Controller,\r
- &gEfiPciRootBridgeIoProtocolGuid,\r
- (VOID **) &PciRootBridgeIo,\r
- This->DriverBindingHandle,\r
- Controller,\r
- EFI_OPEN_PROTOCOL_BY_DRIVER\r
- );\r
- if (Status == EFI_ALREADY_STARTED) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- gBS->CloseProtocol (\r
- Controller,\r
- &gEfiPciRootBridgeIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-PciBusDriverBindingStart (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Controller,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Start to management the controller passed in\r
-\r
-Arguments:\r
-\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Controller,\r
- IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r
-\r
-Returns:\r
-\r
-\r
---*/\r
-// TODO: This - add argument and description to function comment\r
-// TODO: Controller - add argument and description to function comment\r
-// TODO: RemainingDevicePath - add argument and description to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // If PCI Platform protocol is available, get it now.\r
- // If the platform implements this, it must be installed before BDS phase\r
- //\r
- gPciPlatformProtocol = NULL;\r
- gBS->LocateProtocol (\r
- &gEfiPciPlatformProtocolGuid,\r
- NULL,\r
- (VOID **) &gPciPlatformProtocol\r
- );\r
-\r
- gFullEnumeration = (BOOLEAN) ((SearchHostBridgeHandle (Controller) ? FALSE : TRUE));\r
-\r
- //\r
- // Enumerate the entire host bridge\r
- // After enumeration, a database that records all the device information will be created\r
- //\r
- //\r
- Status = PciEnumerator (Controller);\r
-\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Enable PCI device specified by remaining device path. BDS or other driver can call the\r
- // start more than once.\r
- //\r
-\r
- StartPciDevices (Controller, RemainingDevicePath);\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-EFI_STATUS\r
-EFIAPI\r
-PciBusDriverBindingStop (\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Controller,\r
- IN UINTN NumberOfChildren,\r
- IN EFI_HANDLE *ChildHandleBuffer\r
- )\r
-/*++\r
-\r
-Routine Description:\r
-\r
- Stop one or more children created at start of pci bus driver\r
- if all the the children get closed, close the protocol\r
-\r
-Arguments:\r
-\r
- IN EFI_DRIVER_BINDING_PROTOCOL *This,\r
- IN EFI_HANDLE Controller,\r
- IN UINTN NumberOfChildren,\r
- IN EFI_HANDLE *ChildHandleBuffer\r
-\r
-Returns:\r
-\r
-\r
---*/\r
-// TODO: This - add argument and description to function comment\r
-// TODO: Controller - add argument and description to function comment\r
-// TODO: NumberOfChildren - add argument and description to function comment\r
-// TODO: ChildHandleBuffer - add argument and description to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-// TODO: EFI_DEVICE_ERROR - add return value to function comment\r
-// TODO: EFI_SUCCESS - add return value to function comment\r
-{\r
- EFI_STATUS Status;\r
- UINTN Index;\r
- BOOLEAN AllChildrenStopped;\r
-\r
- if (NumberOfChildren == 0) {\r
- //\r
- // Close the bus driver\r
- //\r
- gBS->CloseProtocol (\r
- Controller,\r
- &gEfiDevicePathProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
- gBS->CloseProtocol (\r
- Controller,\r
- &gEfiPciRootBridgeIoProtocolGuid,\r
- This->DriverBindingHandle,\r
- Controller\r
- );\r
-\r
- DestroyRootBridgeByHandle (\r
- Controller\r
- );\r
-\r
- return EFI_SUCCESS;\r
- }\r
-\r
- //\r
- // Stop all the children\r
- //\r
-\r
- AllChildrenStopped = TRUE;\r
-\r
- for (Index = 0; Index < NumberOfChildren; Index++) {\r
-\r
- //\r
- // De register all the pci device\r
- //\r
- Status = DeRegisterPciDevice (Controller, ChildHandleBuffer[Index]);\r
-\r
- if (EFI_ERROR (Status)) {\r
- AllChildrenStopped = FALSE;\r
- }\r
- }\r
-\r
- if (!AllChildrenStopped) {\r
- return EFI_DEVICE_ERROR;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
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