--- /dev/null
+/** @file\r
+Copyright (c) 2004 - 2007, Intel Corporation\r
+All rights reserved. This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution. The full text of the license may be found at\r
+http://opensource.org/licenses/bsd-license.php\r
+\r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+Module name:\r
+ statistics.c\r
+\r
+Abstract:\r
+\r
+Revision history:\r
+ 2000-Feb-17 M(f)J Genesis.\r
+\r
+**/\r
+\r
+\r
+#include "Snp.h"\r
+\r
+\r
+/**\r
+ This is the SNP interface routine for getting the NIC's statistics.\r
+ This routine basically retrieves snp structure, checks the SNP state and\r
+ calls the pxe_ routine to actually do the\r
+\r
+ @param this context pointer\r
+ @param ResetFlag true to reset the NIC's statistics counters to zero.\r
+ @param StatTableSizePtr pointer to the statistics table size\r
+ @param StatTablePtr pointer to the statistics table\r
+\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+snp_undi32_statistics (\r
+ IN EFI_SIMPLE_NETWORK_PROTOCOL * this,\r
+ IN BOOLEAN ResetFlag,\r
+ IN OUT UINTN *StatTableSizePtr OPTIONAL,\r
+ IN OUT EFI_NETWORK_STATISTICS * StatTablePtr OPTIONAL\r
+ )\r
+{\r
+ SNP_DRIVER *snp;\r
+ PXE_DB_STATISTICS *db;\r
+ UINT64 *stp;\r
+ UINT64 mask;\r
+ UINTN size;\r
+ UINTN n;\r
+ EFI_TPL OldTpl;\r
+ EFI_STATUS Status;\r
+\r
+ //\r
+ // Get pointer to SNP driver instance for *this.\r
+ //\r
+ if (this == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+\r
+ snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);\r
+\r
+ OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
+\r
+ //\r
+ // Return error if the SNP is not initialized.\r
+ //\r
+ switch (snp->mode.State) {\r
+ case EfiSimpleNetworkInitialized:\r
+ break;\r
+\r
+ case EfiSimpleNetworkStopped:\r
+ Status = EFI_NOT_STARTED;\r
+ goto ON_EXIT;\r
+\r
+ default:\r
+ Status = EFI_DEVICE_ERROR;\r
+ goto ON_EXIT;\r
+ }\r
+ //\r
+ // if we are not resetting the counters, we have to have a valid stat table\r
+ // with >0 size. if no reset, no table and no size, return success.\r
+ //\r
+ if (!ResetFlag && StatTableSizePtr == NULL) {\r
+ Status = StatTablePtr ? EFI_INVALID_PARAMETER : EFI_SUCCESS;\r
+ goto ON_EXIT;\r
+ }\r
+ //\r
+ // Initialize UNDI Statistics CDB\r
+ //\r
+ snp->cdb.OpCode = PXE_OPCODE_STATISTICS;\r
+ snp->cdb.CPBsize = PXE_CPBSIZE_NOT_USED;\r
+ snp->cdb.CPBaddr = PXE_CPBADDR_NOT_USED;\r
+ snp->cdb.StatCode = PXE_STATCODE_INITIALIZE;\r
+ snp->cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;\r
+ snp->cdb.IFnum = snp->if_num;\r
+ snp->cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;\r
+\r
+ if (ResetFlag) {\r
+ snp->cdb.OpFlags = PXE_OPFLAGS_STATISTICS_RESET;\r
+ snp->cdb.DBsize = PXE_DBSIZE_NOT_USED;\r
+ snp->cdb.DBaddr = PXE_DBADDR_NOT_USED;\r
+ db = snp->db;\r
+ } else {\r
+ snp->cdb.OpFlags = PXE_OPFLAGS_STATISTICS_READ;\r
+ snp->cdb.DBsize = sizeof (PXE_DB_STATISTICS);\r
+ snp->cdb.DBaddr = (UINT64)(UINTN) (db = snp->db);\r
+ }\r
+ //\r
+ // Issue UNDI command and check result.\r
+ //\r
+ DEBUG ((EFI_D_NET, "\nsnp->undi.statistics() "));\r
+\r
+ (*snp->issue_undi32_command) ((UINT64)(UINTN) &snp->cdb);\r
+\r
+ switch (snp->cdb.StatCode) {\r
+ case PXE_STATCODE_SUCCESS:\r
+ break;\r
+\r
+ case PXE_STATCODE_UNSUPPORTED:\r
+ DEBUG (\r
+ (EFI_D_ERROR,\r
+ "\nsnp->undi.statistics() %xh:%xh\n",\r
+ snp->cdb.StatFlags,\r
+ snp->cdb.StatCode)\r
+ );\r
+\r
+ Status = EFI_UNSUPPORTED;\r
+ goto ON_EXIT;\r
+\r
+ default:\r
+ DEBUG (\r
+ (EFI_D_ERROR,\r
+ "\nsnp->undi.statistics() %xh:%xh\n",\r
+ snp->cdb.StatFlags,\r
+ snp->cdb.StatCode)\r
+ );\r
+\r
+ Status = EFI_DEVICE_ERROR;\r
+ goto ON_EXIT;\r
+ }\r
+\r
+ if (ResetFlag) {\r
+ Status = EFI_SUCCESS;\r
+ goto ON_EXIT;\r
+ }\r
+\r
+ if (StatTablePtr == NULL) {\r
+ *StatTableSizePtr = sizeof (EFI_NETWORK_STATISTICS);\r
+ Status = EFI_BUFFER_TOO_SMALL;\r
+ goto ON_EXIT;\r
+ }\r
+ //\r
+ // Convert the UNDI statistics information to SNP statistics\r
+ // information.\r
+ //\r
+ ZeroMem (StatTablePtr, *StatTableSizePtr);\r
+ stp = (UINT64 *) StatTablePtr;\r
+ size = 0;\r
+\r
+ for (n = 0, mask = 1; n < 64; n++, mask = LShiftU64 (mask, 1), stp++) {\r
+ //\r
+ // There must be room for a full UINT64. Partial\r
+ // numbers will not be stored.\r
+ //\r
+ if ((n + 1) * sizeof (UINT64) > *StatTableSizePtr) {\r
+ break;\r
+ }\r
+\r
+ if (db->Supported & mask) {\r
+ *stp = db->Data[n];\r
+ size = n + 1;\r
+ } else {\r
+ SetMem (stp, sizeof (UINT64), 0xFF);\r
+ }\r
+ }\r
+ //\r
+ // Compute size up to last supported statistic.\r
+ //\r
+ while (++n < 64) {\r
+ if (db->Supported & (mask = LShiftU64 (mask, 1))) {\r
+ size = n;\r
+ }\r
+ }\r
+\r
+ size *= sizeof (UINT64);\r
+\r
+ if (*StatTableSizePtr >= size) {\r
+ *StatTableSizePtr = size;\r
+ Status = EFI_SUCCESS;\r
+ } else {\r
+ *StatTableSizePtr = size;\r
+ Status = EFI_BUFFER_TOO_SMALL;\r
+ }\r
+\r
+ON_EXIT:\r
+ gBS->RestoreTPL (OldTpl);\r
+\r
+ return Status;\r
+}\r
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