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| author | Liming Gao <liming.gao@intel.com> | 2019-05-15 20:02:18 +0800 |
|---|---|---|
| committer | Liming Gao <liming.gao@intel.com> | 2019-05-27 09:25:18 +0800 |
| commit | 4542f8b8135f1f1ee5654e25139be9769e139ddd (patch) | |
| tree | 6e05d7c624d89b3df27d0d3437815a2587f0640f /NetworkPkg/SnpDxe/WaitForPacket.c | |
| parent | c0fd7f734e2d33e22215899b40a47b843129541d (diff) | |
| download | edk2-4542f8b8135f1f1ee5654e25139be9769e139ddd.tar.gz edk2-4542f8b8135f1f1ee5654e25139be9769e139ddd.tar.bz2 edk2-4542f8b8135f1f1ee5654e25139be9769e139ddd.zip | |
NetworkPkg: Move Network library and drivers from MdeModulePkg to NetworkPkg
Signed-off-by: Liming Gao <liming.gao@intel.com>
Cc: Siyuan Fu <siyuan.fu@intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Siyuan Fu <siyuan.fu@intel.com>
Diffstat (limited to 'NetworkPkg/SnpDxe/WaitForPacket.c')
| -rw-r--r-- | NetworkPkg/SnpDxe/WaitForPacket.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/NetworkPkg/SnpDxe/WaitForPacket.c b/NetworkPkg/SnpDxe/WaitForPacket.c new file mode 100644 index 0000000000..866a1e8c0e --- /dev/null +++ b/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"
+
+
+/**
+ Nofication 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);
+ }
+}
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