1 /** @file 2 Implementation of starting a network adapter. 3 4 Copyright (c) 2004 - 2007, Intel Corporation. All rights reserved.<BR> 5 This program and the accompanying materials are licensed 6 and made available under the terms and conditions of the BSD License which 7 accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 15 #include "Snp.h" 16 17 18 /** 19 Call UNDI to start the interface and changes the snp state. 20 21 @param Snp pointer to snp driver structure. 22 23 @retval EFI_SUCCESS UNDI is started successfully. 24 @retval EFI_DEVICE_ERROR UNDI could not be started. 25 26 **/ 27 EFI_STATUS PxeStart(IN SNP_DRIVER * Snp)28PxeStart ( 29 IN SNP_DRIVER *Snp 30 ) 31 { 32 PXE_CPB_START_31 *Cpb31; 33 34 Cpb31 = Snp->Cpb; 35 // 36 // Initialize UNDI Start CDB for H/W UNDI 37 // 38 Snp->Cdb.OpCode = PXE_OPCODE_START; 39 Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED; 40 Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED; 41 Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED; 42 Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED; 43 Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED; 44 Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE; 45 Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE; 46 Snp->Cdb.IFnum = Snp->IfNum; 47 Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST; 48 49 // 50 // Make changes to H/W UNDI Start CDB if this is 51 // a S/W UNDI. 52 // 53 if (Snp->IsSwUndi) { 54 Snp->Cdb.CPBsize = (UINT16) sizeof (PXE_CPB_START_31); 55 Snp->Cdb.CPBaddr = (UINT64)(UINTN) Cpb31; 56 57 Cpb31->Delay = (UINT64)(UINTN) &SnpUndi32CallbackDelay; 58 Cpb31->Block = (UINT64)(UINTN) &SnpUndi32CallbackBlock; 59 60 // 61 // Virtual == Physical. This can be set to zero. 62 // 63 Cpb31->Virt2Phys = (UINT64)(UINTN) 0; 64 Cpb31->Mem_IO = (UINT64)(UINTN) &SnpUndi32CallbackMemio; 65 66 Cpb31->Map_Mem = (UINT64)(UINTN) &SnpUndi32CallbackMap; 67 Cpb31->UnMap_Mem = (UINT64)(UINTN) &SnpUndi32CallbackUnmap; 68 Cpb31->Sync_Mem = (UINT64)(UINTN) &SnpUndi32CallbackSync; 69 70 Cpb31->Unique_ID = (UINT64)(UINTN) Snp; 71 } 72 // 73 // Issue UNDI command and check result. 74 // 75 DEBUG ((EFI_D_NET, "\nsnp->undi.start() ")); 76 77 (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb); 78 79 if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) { 80 // 81 // UNDI could not be started. Return UNDI error. 82 // 83 DEBUG ( 84 (EFI_D_ERROR, 85 "\nsnp->undi.start() %xh:%xh\n", 86 Snp->Cdb.StatCode, 87 Snp->Cdb.StatFlags) 88 ); 89 90 return EFI_DEVICE_ERROR; 91 } 92 // 93 // Set simple network state to Started and return success. 94 // 95 Snp->Mode.State = EfiSimpleNetworkStarted; 96 97 return EFI_SUCCESS; 98 } 99 100 101 /** 102 Change the state of a network interface from "stopped" to "started." 103 104 This function starts a network interface. If the network interface successfully 105 starts, then EFI_SUCCESS will be returned. 106 107 @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance. 108 109 @retval EFI_SUCCESS The network interface was started. 110 @retval EFI_ALREADY_STARTED The network interface is already in the started state. 111 @retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid 112 EFI_SIMPLE_NETWORK_PROTOCOL structure. 113 @retval EFI_DEVICE_ERROR The command could not be sent to the network interface. 114 @retval EFI_UNSUPPORTED This function is not supported by the network interface. 115 116 **/ 117 EFI_STATUS 118 EFIAPI SnpUndi32Start(IN EFI_SIMPLE_NETWORK_PROTOCOL * This)119SnpUndi32Start ( 120 IN EFI_SIMPLE_NETWORK_PROTOCOL *This 121 ) 122 { 123 SNP_DRIVER *Snp; 124 EFI_STATUS Status; 125 UINTN Index; 126 EFI_TPL OldTpl; 127 128 if (This == NULL) { 129 return EFI_INVALID_PARAMETER; 130 } 131 132 Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This); 133 134 OldTpl = gBS->RaiseTPL (TPL_CALLBACK); 135 136 switch (Snp->Mode.State) { 137 case EfiSimpleNetworkStopped: 138 break; 139 140 case EfiSimpleNetworkStarted: 141 case EfiSimpleNetworkInitialized: 142 Status = EFI_ALREADY_STARTED; 143 goto ON_EXIT; 144 145 default: 146 Status = EFI_DEVICE_ERROR; 147 goto ON_EXIT; 148 } 149 150 Status = PxeStart (Snp); 151 if (EFI_ERROR (Status)) { 152 goto ON_EXIT; 153 } 154 // 155 // clear the map_list in SNP structure 156 // 157 for (Index = 0; Index < MAX_MAP_LENGTH; Index++) { 158 Snp->MapList[Index].VirtualAddress = 0; 159 Snp->MapList[Index].MapCookie = 0; 160 } 161 162 Snp->Mode.MCastFilterCount = 0; 163 164 ON_EXIT: 165 gBS->RestoreTPL (OldTpl); 166 167 return Status; 168 } 169