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| author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-24 08:06:37 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-07-24 08:06:37 +0000 |
| commit | 8a67d61da4d5a8f08a656cbeea2d902d0ad9042a (patch) | |
| tree | 6618049196a9f4a206b8d6e42fb8b67a71558503 /MdeModulePkg/Universal/Network/SnpDxe/WaitForPacket.c | |
| parent | f9bef4b3ac2bf3bd5f79313f772519800761f104 (diff) | |
| download | edk2-8a67d61da4d5a8f08a656cbeea2d902d0ad9042a.zip edk2-8a67d61da4d5a8f08a656cbeea2d902d0ad9042a.tar.gz edk2-8a67d61da4d5a8f08a656cbeea2d902d0ad9042a.tar.bz2 | |
Import SnpDxe, Tcp4Dxe, Udp4Dxe and MnpDxe.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3416 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdeModulePkg/Universal/Network/SnpDxe/WaitForPacket.c')
| -rw-r--r-- | MdeModulePkg/Universal/Network/SnpDxe/WaitForPacket.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/MdeModulePkg/Universal/Network/SnpDxe/WaitForPacket.c b/MdeModulePkg/Universal/Network/SnpDxe/WaitForPacket.c new file mode 100644 index 0000000..57d82ea --- /dev/null +++ b/MdeModulePkg/Universal/Network/SnpDxe/WaitForPacket.c @@ -0,0 +1,97 @@ +/** @file
+Copyright (c) 2004, Intel Corporation
+All rights reserved. This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module name:
+ WaitForPacket.c
+
+Abstract:
+ Event handler to check for available packet.
+
+
+**/
+
+#include "Snp.h"
+
+
+/**
+
+
+
+**/
+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 = 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)->if_num;
+ ((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)->issue_undi32_command) ((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);
+ }
+}
+
+/* eof - WaitForPacket.c */
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