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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:17:27 +0000 |
commit | f215e02bf85f68d3a6106c2a1f4f7f063f819064 (patch) | |
tree | 6bb5b92c046312c4e95ac2620b10ddf482d3fa8b /src/VBox/Devices/EFI/Firmware/NetworkPkg/SnpDxe/WaitForPacket.c | |
parent | Initial commit. (diff) | |
download | virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.tar.xz virtualbox-f215e02bf85f68d3a6106c2a1f4f7f063f819064.zip |
Adding upstream version 7.0.14-dfsg.upstream/7.0.14-dfsg
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/NetworkPkg/SnpDxe/WaitForPacket.c')
-rw-r--r-- | src/VBox/Devices/EFI/Firmware/NetworkPkg/SnpDxe/WaitForPacket.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/NetworkPkg/SnpDxe/WaitForPacket.c b/src/VBox/Devices/EFI/Firmware/NetworkPkg/SnpDxe/WaitForPacket.c new file mode 100644 index 00000000..1b5add59 --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/NetworkPkg/SnpDxe/WaitForPacket.c @@ -0,0 +1,86 @@ +/** @file + Event handler to check for available packet. + +Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR> +SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include "Snp.h" + + +/** + Notification call back function for WaitForPacket event. + + @param Event EFI Event. + @param SnpPtr Pointer to SNP_DRIVER structure. + +**/ +VOID +EFIAPI +SnpWaitForPacketNotify ( + EFI_EVENT Event, + VOID *SnpPtr + ) +{ + PXE_DB_GET_STATUS PxeDbGetStatus; + + // + // Do nothing if either parameter is a NULL pointer. + // + if (Event == NULL || SnpPtr == NULL) { + return ; + } + // + // Do nothing if the SNP interface is not initialized. + // + switch (((SNP_DRIVER *) SnpPtr)->Mode.State) { + case EfiSimpleNetworkInitialized: + break; + + case EfiSimpleNetworkStopped: + case EfiSimpleNetworkStarted: + default: + return ; + } + // + // Fill in CDB for UNDI GetStatus(). + // + ((SNP_DRIVER *) SnpPtr)->Cdb.OpCode = PXE_OPCODE_GET_STATUS; + ((SNP_DRIVER *) SnpPtr)->Cdb.OpFlags = 0; + ((SNP_DRIVER *) SnpPtr)->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED; + ((SNP_DRIVER *) SnpPtr)->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED; + ((SNP_DRIVER *) SnpPtr)->Cdb.DBsize = (UINT16) (sizeof (UINT32) * 2); + ((SNP_DRIVER *) SnpPtr)->Cdb.DBaddr = (UINT64)(UINTN) (((SNP_DRIVER *) SnpPtr)->Db); + ((SNP_DRIVER *) SnpPtr)->Cdb.StatCode = PXE_STATCODE_INITIALIZE; + ((SNP_DRIVER *) SnpPtr)->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE; + ((SNP_DRIVER *) SnpPtr)->Cdb.IFnum = ((SNP_DRIVER *) SnpPtr)->IfNum; + ((SNP_DRIVER *) SnpPtr)->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST; + + // + // Clear contents of DB buffer. + // + ZeroMem (((SNP_DRIVER *) SnpPtr)->Db, sizeof (UINT32) * 2); + + // + // Issue UNDI command and check result. + // + (*((SNP_DRIVER *) SnpPtr)->IssueUndi32Command) ((UINT64)(UINTN) &((SNP_DRIVER *) SnpPtr)->Cdb); + + if (((SNP_DRIVER *) SnpPtr)->Cdb.StatCode != EFI_SUCCESS) { + return ; + } + // + // We might have a packet. Check the receive length and signal + // the event if the length is not zero. + // + CopyMem ( + &PxeDbGetStatus, + ((SNP_DRIVER *) SnpPtr)->Db, + sizeof (UINT32) * 2 + ); + + if (PxeDbGetStatus.RxFrameLen != 0) { + gBS->SignalEvent (Event); + } +} |