/** @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
+ Implementation of reading the current interrupt status and recycled transmit\r
+ buffer status from a network interface.\r
+\r
+Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials are licensed\r
+and made available under the terms and conditions of the BSD License which\r
+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
- get_status.c\r
-\r
-Abstract:\r
-\r
-Revision history:\r
- 2000-Feb-03 M(f)J Genesis.\r
-\r
**/\r
\r
#include "Snp.h"\r
\r
/**\r
- this routine calls undi to get the status of the interrupts, get the list of\r
- transmit buffers that completed transmitting!\r
+ Call undi to get the status of the interrupts, get the list of recycled transmit\r
+ buffers that completed transmitting. The recycled transmit buffer address will\r
+ be saved into Snp->RecycledTxBuf.\r
\r
- @param snp pointer to snp driver structure\r
- @param InterruptStatusPtr a non null pointer gets the interrupt status\r
- @param TransmitBufferListPtrs a non null ointer gets the list of pointers of\r
- previously transmitted buffers whose\r
- transmission was completed asynchrnously.\r
+ @param Snp Pointer to snp driver structure.\r
+ @param InterruptStatusPtr A non null pointer to contain the interrupt\r
+ status.\r
+ @param GetTransmittedBuf Set to TRUE to retrieve the recycled transmit\r
+ buffer address.\r
\r
+ @retval EFI_SUCCESS The status of the network interface was retrieved.\r
+ @retval EFI_DEVICE_ERROR The command could not be sent to the network\r
+ interface.\r
\r
**/\r
EFI_STATUS\r
-pxe_getstatus (\r
- SNP_DRIVER *snp,\r
+PxeGetStatus (\r
+ SNP_DRIVER *Snp,\r
UINT32 *InterruptStatusPtr,\r
- VOID **TransmitBufferListPtr\r
+ BOOLEAN GetTransmittedBuf\r
)\r
{\r
- PXE_DB_GET_STATUS *db;\r
+ PXE_DB_GET_STATUS *Db;\r
UINT16 InterruptFlags;\r
+ UINT32 Index;\r
+ UINT64 *Tmp;\r
\r
- db = snp->db;\r
- snp->cdb.OpCode = PXE_OPCODE_GET_STATUS;\r
+ Tmp = NULL;\r
+ Db = Snp->Db;\r
+ Snp->Cdb.OpCode = PXE_OPCODE_GET_STATUS;\r
\r
- snp->cdb.OpFlags = 0;\r
+ Snp->Cdb.OpFlags = 0;\r
\r
- if (TransmitBufferListPtr != NULL) {\r
- snp->cdb.OpFlags |= PXE_OPFLAGS_GET_TRANSMITTED_BUFFERS;\r
+ if (GetTransmittedBuf) {\r
+ Snp->Cdb.OpFlags |= PXE_OPFLAGS_GET_TRANSMITTED_BUFFERS;\r
+ ZeroMem (Db->TxBuffer, sizeof (Db->TxBuffer));\r
}\r
\r
if (InterruptStatusPtr != NULL) {\r
- snp->cdb.OpFlags |= PXE_OPFLAGS_GET_INTERRUPT_STATUS;\r
+ Snp->Cdb.OpFlags |= PXE_OPFLAGS_GET_INTERRUPT_STATUS;\r
}\r
\r
- snp->cdb.CPBsize = PXE_CPBSIZE_NOT_USED;\r
- snp->cdb.CPBaddr = PXE_CPBADDR_NOT_USED;\r
+ if (Snp->MediaStatusSupported) {\r
+ Snp->Cdb.OpFlags |= PXE_OPFLAGS_GET_MEDIA_STATUS;\r
+ }\r
\r
- //\r
- // size DB for return of one buffer\r
- //\r
- snp->cdb.DBsize = (UINT16) (((UINT16) (sizeof (PXE_DB_GET_STATUS)) - (UINT16) (sizeof db->TxBuffer)) + (UINT16) (sizeof db->TxBuffer[0]));\r
+ Snp->Cdb.CPBsize = PXE_CPBSIZE_NOT_USED;\r
+ Snp->Cdb.CPBaddr = PXE_CPBADDR_NOT_USED;\r
\r
- snp->cdb.DBaddr = (UINT64)(UINTN) db;\r
+ Snp->Cdb.DBsize = (UINT16) sizeof (PXE_DB_GET_STATUS);\r
+ Snp->Cdb.DBaddr = (UINT64)(UINTN) Db;\r
\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
+ Snp->Cdb.StatCode = PXE_STATCODE_INITIALIZE;\r
+ Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;\r
+ Snp->Cdb.IFnum = Snp->IfNum;\r
+ Snp->Cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;\r
\r
//\r
// Issue UNDI command and check result.\r
//\r
- DEBUG ((EFI_D_NET, "\nsnp->undi.get_status() "));\r
+ DEBUG ((EFI_D_NET, "\nSnp->undi.get_status() "));\r
\r
- (*snp->issue_undi32_command) ((UINT64)(UINTN) &snp->cdb);\r
+ (*Snp->IssueUndi32Command) ((UINT64)(UINTN) &Snp->Cdb);\r
\r
- if (snp->cdb.StatCode != EFI_SUCCESS) {\r
+ if (Snp->Cdb.StatCode != PXE_STATCODE_SUCCESS) {\r
DEBUG (\r
(EFI_D_NET,\r
- "\nsnp->undi.get_status() %xh:%xh\n",\r
- snp->cdb.StatFlags,\r
- snp->cdb.StatFlags)\r
+ "\nSnp->undi.get_status() %xh:%xh\n",\r
+ Snp->Cdb.StatFlags,\r
+ Snp->Cdb.StatCode)\r
);\r
\r
return EFI_DEVICE_ERROR;\r
// report the values back..\r
//\r
if (InterruptStatusPtr != NULL) {\r
- InterruptFlags = (UINT16) (snp->cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_INTERRUPT_MASK);\r
+ InterruptFlags = (UINT16) (Snp->Cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_INTERRUPT_MASK);\r
\r
*InterruptStatusPtr = 0;\r
\r
- if (InterruptFlags & PXE_STATFLAGS_GET_STATUS_RECEIVE) {\r
+ if ((InterruptFlags & PXE_STATFLAGS_GET_STATUS_RECEIVE) == PXE_STATFLAGS_GET_STATUS_RECEIVE) {\r
*InterruptStatusPtr |= EFI_SIMPLE_NETWORK_RECEIVE_INTERRUPT;\r
}\r
\r
- if (InterruptFlags & PXE_STATFLAGS_GET_STATUS_TRANSMIT) {\r
+ if ((InterruptFlags & PXE_STATFLAGS_GET_STATUS_TRANSMIT) == PXE_STATFLAGS_GET_STATUS_TRANSMIT) {\r
*InterruptStatusPtr |= EFI_SIMPLE_NETWORK_TRANSMIT_INTERRUPT;\r
}\r
\r
- if (InterruptFlags & PXE_STATFLAGS_GET_STATUS_COMMAND) {\r
+ if ((InterruptFlags & PXE_STATFLAGS_GET_STATUS_COMMAND) == PXE_STATFLAGS_GET_STATUS_COMMAND) {\r
*InterruptStatusPtr |= EFI_SIMPLE_NETWORK_COMMAND_INTERRUPT;\r
}\r
\r
- if (InterruptFlags & PXE_STATFLAGS_GET_STATUS_SOFTWARE) {\r
+ if ((InterruptFlags & PXE_STATFLAGS_GET_STATUS_SOFTWARE) == PXE_STATFLAGS_GET_STATUS_SOFTWARE) {\r
*InterruptStatusPtr |= EFI_SIMPLE_NETWORK_COMMAND_INTERRUPT;\r
}\r
\r
}\r
\r
- if (TransmitBufferListPtr != NULL) {\r
- *TransmitBufferListPtr =\r
- (\r
- (snp->cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_NO_TXBUFS_WRITTEN) ||\r
- (snp->cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_TXBUF_QUEUE_EMPTY)\r
- ) ? 0 : (VOID *) (UINTN) db->TxBuffer[0];\r
+ if (GetTransmittedBuf) {\r
+ if ((Snp->Cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_NO_TXBUFS_WRITTEN) == 0) {\r
+ //\r
+ // UNDI has written some transmitted buffer addresses into the DB. Store them into Snp->RecycledTxBuf.\r
+ //\r
+ for (Index = 0; Index < MAX_XMIT_BUFFERS; Index++) {\r
+ if (Db->TxBuffer[Index] != 0) {\r
+ if (Snp->RecycledTxBufCount == Snp->MaxRecycledTxBuf) {\r
+ //\r
+ // Snp->RecycledTxBuf is full, reallocate a new one.\r
+ //\r
+ if ((Snp->MaxRecycledTxBuf + SNP_TX_BUFFER_INCREASEMENT) >= SNP_MAX_TX_BUFFER_NUM) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+ Tmp = AllocatePool (sizeof (UINT64) * (Snp->MaxRecycledTxBuf + SNP_TX_BUFFER_INCREASEMENT));\r
+ if (Tmp == NULL) {\r
+ return EFI_DEVICE_ERROR;\r
+ }\r
+ CopyMem (Tmp, Snp->RecycledTxBuf, sizeof (UINT64) * Snp->RecycledTxBufCount);\r
+ FreePool (Snp->RecycledTxBuf);\r
+ Snp->RecycledTxBuf = Tmp;\r
+ Snp->MaxRecycledTxBuf += SNP_TX_BUFFER_INCREASEMENT;\r
+ }\r
+ Snp->RecycledTxBuf[Snp->RecycledTxBufCount] = Db->TxBuffer[Index];\r
+ Snp->RecycledTxBufCount++;\r
+ }\r
+ }\r
+ }\r
+ }\r
\r
+ //\r
+ // Update MediaPresent field of EFI_SIMPLE_NETWORK_MODE if the UNDI support\r
+ // returning media status from GET_STATUS command\r
+ //\r
+ if (Snp->MediaStatusSupported) {\r
+ Snp->Snp.Mode->MediaPresent =\r
+ (BOOLEAN) (((Snp->Cdb.StatFlags & PXE_STATFLAGS_GET_STATUS_NO_MEDIA) != 0) ? FALSE : TRUE);\r
}\r
\r
return EFI_SUCCESS;\r
}\r
\r
-\r
/**\r
- This is the SNP interface routine for getting the status\r
- This routine basically retrieves snp structure, checks the SNP state and\r
- calls the pxe_getstatus routine to actually get the undi status\r
-\r
- @param this context pointer\r
- @param InterruptStatusPtr a non null pointer gets the interrupt status\r
- @param TransmitBufferListPtrs a non null ointer gets the list of pointers of\r
- previously transmitted buffers whose\r
- transmission was completed asynchrnously.\r
-\r
+ Reads the current interrupt status and recycled transmit buffer status from a\r
+ network interface.\r
+\r
+ This function gets the current interrupt and recycled transmit buffer status\r
+ from the network interface. The interrupt status is returned as a bit mask in\r
+ InterruptStatus. If InterruptStatus is NULL, the interrupt status will not be\r
+ read. If TxBuf is not NULL, a recycled transmit buffer address will be retrieved.\r
+ If a recycled transmit buffer address is returned in TxBuf, then the buffer has\r
+ been successfully transmitted, and the status for that buffer is cleared. If\r
+ the status of the network interface is successfully collected, EFI_SUCCESS\r
+ will be returned. If the driver has not been initialized, EFI_DEVICE_ERROR will\r
+ be returned.\r
+\r
+ @param This A pointer to the EFI_SIMPLE_NETWORK_PROTOCOL instance.\r
+ @param InterruptStatus A pointer to the bit mask of the currently active\r
+ interrupts (see "Related Definitions"). If this is NULL,\r
+ the interrupt status will not be read from the device.\r
+ If this is not NULL, the interrupt status will be read\r
+ from the device. When the interrupt status is read, it\r
+ will also be cleared. Clearing the transmit interrupt does\r
+ not empty the recycled transmit buffer array.\r
+ @param TxBuf Recycled transmit buffer address. The network interface\r
+ will not transmit if its internal recycled transmit\r
+ buffer array is full. Reading the transmit buffer does\r
+ not clear the transmit interrupt. If this is NULL, then\r
+ the transmit buffer status will not be read. If there\r
+ are no transmit buffers to recycle and TxBuf is not NULL,\r
+ TxBuf will be set to NULL.\r
+\r
+ @retval EFI_SUCCESS The status of the network interface was retrieved.\r
+ @retval EFI_NOT_STARTED The network interface has not been started.\r
+ @retval EFI_INVALID_PARAMETER This parameter was NULL or did not point to a valid\r
+ EFI_SIMPLE_NETWORK_PROTOCOL structure.\r
+ @retval EFI_DEVICE_ERROR The command could not be sent to the network\r
+ interface.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
-snp_undi32_get_status (\r
- IN EFI_SIMPLE_NETWORK_PROTOCOL * this,\r
- OUT UINT32 *InterruptStatusPtr OPTIONAL,\r
- OUT VOID **TransmitBufferListPtr OPTIONAL\r
+SnpUndi32GetStatus (\r
+ IN EFI_SIMPLE_NETWORK_PROTOCOL *This,\r
+ OUT UINT32 *InterruptStatus, OPTIONAL\r
+ OUT VOID **TxBuf OPTIONAL\r
)\r
{\r
- SNP_DRIVER *snp;\r
+ SNP_DRIVER *Snp;\r
EFI_TPL OldTpl;\r
EFI_STATUS Status;\r
\r
- if (this == NULL) {\r
+ if (This == NULL) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- if (InterruptStatusPtr == NULL && TransmitBufferListPtr == NULL) {\r
+ if (InterruptStatus == NULL && TxBuf == NULL) {\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
- snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);\r
+ Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);\r
\r
OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r
\r
- if (snp == NULL) {\r
+ if (Snp == NULL) {\r
return EFI_DEVICE_ERROR;\r
}\r
\r
- switch (snp->mode.State) {\r
+ switch (Snp->Mode.State) {\r
case EfiSimpleNetworkInitialized:\r
break;\r
\r
goto ON_EXIT;\r
}\r
\r
- Status = pxe_getstatus (snp, InterruptStatusPtr, TransmitBufferListPtr);\r
+ if (Snp->RecycledTxBufCount == 0 && TxBuf != NULL) {\r
+ Status = PxeGetStatus (Snp, InterruptStatus, TRUE);\r
+ } else {\r
+ Status = PxeGetStatus (Snp, InterruptStatus, FALSE);\r
+ }\r
+\r
+ if (TxBuf != NULL) {\r
+ //\r
+ // Get a recycled buf from Snp->RecycledTxBuf\r
+ //\r
+ if (Snp->RecycledTxBufCount == 0) {\r
+ *TxBuf = NULL;\r
+ } else {\r
+ Snp->RecycledTxBufCount--;\r
+ *TxBuf = (VOID *) (UINTN) Snp->RecycledTxBuf[Snp->RecycledTxBufCount];\r
+ }\r
+ }\r
\r
ON_EXIT:\r
gBS->RestoreTPL (OldTpl);\r
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