1 /** @file 2 PciHostBridge driver module, part of QNC module. 3 4 Provides the basic interfaces to abstract a PCI Host Bridge Resource Allocation. 5 6 Copyright (c) 2013-2015 Intel Corporation. 7 8 This program and the accompanying materials 9 are licensed and made available under the terms and conditions of the BSD License 10 which accompanies this distribution. The full text of the license may be found at 11 http://opensource.org/licenses/bsd-license.php 12 13 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 14 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 15 16 **/ 17 #include "CommonHeader.h" 18 #include "QNCInit.h" 19 20 UINT32 mS3ParameterRootPortDownstream = 0; 21 EFI_QNC_S3_DISPATCH_ITEM mS3DispatchItem = { 22 QncS3ItemTypeInitPcieRootPortDownstream, 23 &mS3ParameterRootPortDownstream 24 }; 25 26 EFI_STATUS 27 QncInitRootPorts ( 28 ) 29 /*++ 30 31 Routine Description: 32 33 Perform Initialization of the Downstream Root Ports 34 35 Arguments: 36 37 Returns: 38 39 EFI_SUCCESS The function completed successfully 40 41 --*/ 42 { 43 EFI_STATUS Status; 44 EFI_QNC_S3_SUPPORT_PROTOCOL *QncS3Support; 45 VOID *Context; 46 VOID *S3DispatchEntryPoint; 47 48 Status = PciExpressInit (); 49 ASSERT_EFI_ERROR (Status); 50 51 // 52 // Get the QNC S3 Support Protocol 53 // 54 Status = gBS->LocateProtocol ( 55 &gEfiQncS3SupportProtocolGuid, 56 NULL, 57 (VOID **) &QncS3Support 58 ); 59 ASSERT_EFI_ERROR (Status); 60 if (EFI_ERROR (Status)) { 61 return Status; 62 } 63 64 // 65 // Get the QNC S3 Support Protocol 66 // 67 Status = QncS3Support->SetDispatchItem ( 68 QncS3Support, 69 &mS3DispatchItem, 70 &S3DispatchEntryPoint, 71 &Context 72 ); 73 ASSERT_EFI_ERROR (Status); 74 75 // 76 // Save the script dispatch item in the Boot Script 77 // 78 Status = S3BootScriptSaveDispatch2 (S3DispatchEntryPoint, Context); 79 ASSERT_EFI_ERROR (Status); 80 81 return Status; 82 } 83
