1/** @file 2 Implementation of resetting a network adapter. 3 4Copyright (c) 2004 - 2007, Intel Corporation. All rights reserved.<BR> 5This program and the accompanying materials are licensed and made available under the 6terms and conditions of the BSD License which accompanies this distribution. The 7full text of the license may be found at 8http://opensource.org/licenses/bsd-license.php 9 10THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13**/ 14 15#include "Snp.h" 16 17 18/** 19 Call UNDI to reset the NIC. 20 21 @param Snp Pointer to the snp driver structure. 22 23 @return EFI_SUCCESSFUL The NIC was reset. 24 @retval EFI_DEVICE_ERROR The NIC cannot be reset. 25 26**/ 27EFI_STATUS 28PxeReset ( 29 SNP_DRIVER *Snp 30 ) 31{ 32 Snp->Cdb.OpCode = PXE_OPCODE_RESET; 33 Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED; 34 Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED; 35 Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED; 36 Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED; 37 Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED; 38 Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE; 39 Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE; 40 Snp->Cdb.IFnum = Snp->IfNum; 41 Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST; 42 43 // 44 // Issue UNDI command and check result. 45 // 46 DEBUG ((EFI_D_NET, "\nsnp->undi.reset() ")); 47 48 (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb); 49 50 if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) { 51 DEBUG ( 52 (EFI_D_WARN, 53 "\nsnp->undi32.reset() %xh:%xh\n", 54 Snp->Cdb.StatFlags, 55 Snp->Cdb.StatCode) 56 ); 57 58 // 59 // UNDI could not be reset. Return UNDI error. 60 // 61 return EFI_DEVICE_ERROR; 62 } 63 64 return EFI_SUCCESS; 65} 66 67 68/** 69 Resets a network adapter and reinitializes it with the parameters that were 70 provided in the previous call to Initialize(). 71 72 This function resets a network adapter and reinitializes it with the parameters 73 that were provided in the previous call to Initialize(). The transmit and 74 receive queues are emptied and all pending interrupts are cleared. 75 Receive filters, the station address, the statistics, and the multicast-IP-to-HW 76 MAC addresses are not reset by this call. If the network interface was 77 successfully reset, then EFI_SUCCESS will be returned. If the driver has not 78 been initialized, EFI_DEVICE_ERROR will be returned. 79 80 @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance. 81 @param ExtendedVerification Indicates that the driver may perform a more 82 exhaustive verification operation of the device 83 during reset. 84 85 @retval EFI_SUCCESS The network interface was reset. 86 @retval EFI_NOT_STARTED The network interface has not been started. 87 @retval EFI_INVALID_PARAMETER One or more of the parameters has an unsupported value. 88 @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. 89 @retval EFI_UNSUPPORTED This function is not supported by the network interface. 90 91**/ 92EFI_STATUS 93EFIAPI 94SnpUndi32Reset ( 95 IN EFI_SIMPLE_NETWORK_PROTOCOL *This, 96 IN BOOLEAN ExtendedVerification 97 ) 98{ 99 SNP_DRIVER *Snp; 100 EFI_TPL OldTpl; 101 EFI_STATUS Status; 102 103 // 104 // Resolve Warning 4 unreferenced parameter problem 105 // 106 ExtendedVerification = 0; 107 DEBUG ((EFI_D_WARN, "ExtendedVerification = %d is not implemented!\n", ExtendedVerification)); 108 109 if (This == NULL) { 110 return EFI_INVALID_PARAMETER; 111 } 112 113 Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This); 114 115 OldTpl = gBS->RaiseTPL (TPL_CALLBACK); 116 117 switch (Snp->Mode.State) { 118 case EfiSimpleNetworkInitialized: 119 break; 120 121 case EfiSimpleNetworkStopped: 122 Status = EFI_NOT_STARTED; 123 goto ON_EXIT; 124 125 default: 126 Status = EFI_DEVICE_ERROR; 127 goto ON_EXIT; 128 } 129 130 Status = PxeReset (Snp); 131 132ON_EXIT: 133 gBS->RestoreTPL (OldTpl); 134 135 return Status; 136} 137