diff options
Diffstat (limited to 'NetworkPkg/SnpDxe/Start.c')
| -rw-r--r-- | NetworkPkg/SnpDxe/Start.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/NetworkPkg/SnpDxe/Start.c b/NetworkPkg/SnpDxe/Start.c new file mode 100644 index 0000000000..033ca22f66 --- /dev/null +++ b/NetworkPkg/SnpDxe/Start.c @@ -0,0 +1,162 @@ +/** @file
+ Implementation of starting a network adapter.
+
+Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
+SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "Snp.h"
+
+
+/**
+ Call UNDI to start the interface and changes the snp state.
+
+ @param Snp pointer to snp driver structure.
+
+ @retval EFI_SUCCESS UNDI is started successfully.
+ @retval EFI_DEVICE_ERROR UNDI could not be started.
+
+**/
+EFI_STATUS
+PxeStart (
+ IN SNP_DRIVER *Snp
+ )
+{
+ PXE_CPB_START_31 *Cpb31;
+
+ Cpb31 = Snp->Cpb;
+ //
+ // Initialize UNDI Start CDB for H/W UNDI
+ //
+ Snp->Cdb.OpCode = PXE_OPCODE_START;
+ Snp->Cdb.OpFlags = PXE_OPFLAGS_NOT_USED;
+ Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;
+ Snp->Cdb.DBsize = PXE_DBSIZE_NOT_USED;
+ Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;
+ Snp->Cdb.DBaddr = PXE_DBADDR_NOT_USED;
+ Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;
+ Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
+ Snp->Cdb.IFnum = Snp->IfNum;
+ Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
+
+ //
+ // Make changes to H/W UNDI Start CDB if this is
+ // a S/W UNDI.
+ //
+ if (Snp->IsSwUndi) {
+ Snp->Cdb.CPBsize = (UINT16) sizeof (PXE_CPB_START_31);
+ Snp->Cdb.CPBaddr = (UINT64)(UINTN) Cpb31;
+
+ Cpb31->Delay = (UINT64)(UINTN) &SnpUndi32CallbackDelay;
+ Cpb31->Block = (UINT64)(UINTN) &SnpUndi32CallbackBlock;
+
+ //
+ // Virtual == Physical. This can be set to zero.
+ //
+ Cpb31->Virt2Phys = (UINT64)(UINTN) 0;
+ Cpb31->Mem_IO = (UINT64)(UINTN) &SnpUndi32CallbackMemio;
+
+ Cpb31->Map_Mem = (UINT64)(UINTN) &SnpUndi32CallbackMap;
+ Cpb31->UnMap_Mem = (UINT64)(UINTN) &SnpUndi32CallbackUnmap;
+ Cpb31->Sync_Mem = (UINT64)(UINTN) &SnpUndi32CallbackSync;
+
+ Cpb31->Unique_ID = (UINT64)(UINTN) Snp;
+ }
+ //
+ // Issue UNDI command and check result.
+ //
+ DEBUG ((EFI_D_NET, "\nsnp->undi.start() "));
+
+ (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);
+
+ if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {
+ //
+ // UNDI could not be started. Return UNDI error.
+ //
+ DEBUG (
+ (EFI_D_ERROR,
+ "\nsnp->undi.start() %xh:%xh\n",
+ Snp->Cdb.StatCode,
+ Snp->Cdb.StatFlags)
+ );
+
+ return EFI_DEVICE_ERROR;
+ }
+ //
+ // Set simple network state to Started and return success.
+ //
+ Snp->Mode.State = EfiSimpleNetworkStarted;
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Change the state of a network interface from "stopped" to "started."
+
+ This function starts a network interface. If the network interface successfully
+ starts, then EFI_SUCCESS will be returned.
+
+ @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.
+
+ @retval EFI_SUCCESS The network interface was started.
+ @retval EFI_ALREADY_STARTED The network interface is already in the started state.
+ @retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid
+ EFI_SIMPLE_NETWORK_PROTOCOL structure.
+ @retval EFI_DEVICE_ERROR The command could not be sent to the network interface.
+ @retval EFI_UNSUPPORTED This function is not supported by the network interface.
+
+**/
+EFI_STATUS
+EFIAPI
+SnpUndi32Start (
+ IN EFI_SIMPLE_NETWORK_PROTOCOL *This
+ )
+{
+ SNP_DRIVER *Snp;
+ EFI_STATUS Status;
+ UINTN Index;
+ EFI_TPL OldTpl;
+
+ if (This == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
+
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
+
+ switch (Snp->Mode.State) {
+ case EfiSimpleNetworkStopped:
+ break;
+
+ case EfiSimpleNetworkStarted:
+ case EfiSimpleNetworkInitialized:
+ Status = EFI_ALREADY_STARTED;
+ goto ON_EXIT;
+
+ default:
+ Status = EFI_DEVICE_ERROR;
+ goto ON_EXIT;
+ }
+
+ Status = PxeStart (Snp);
+ if (EFI_ERROR (Status)) {
+ goto ON_EXIT;
+ }
+ //
+ // clear the map_list in SNP structure
+ //
+ for (Index = 0; Index < MAX_MAP_LENGTH; Index++) {
+ Snp->MapList[Index].VirtualAddress = 0;
+ Snp->MapList[Index].MapCookie = 0;
+ }
+
+ Snp->Mode.MCastFilterCount = 0;
+
+ON_EXIT:
+ gBS->RestoreTPL (OldTpl);
+
+ return Status;
+}
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