497 lines
14 KiB
C
497 lines
14 KiB
C
/*****************************************************************************
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** **
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** COPYRIGHT (C) 2000, 2001 MKNET CORPORATION **
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** DEVELOPED FOR THE MK7100-BASED VFIR PCI CONTROLLER. **
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** **
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*****************************************************************************/
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/**********************************************************************
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Module Name:
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SEND.C
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Routines:
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MKMiniportMultiSend
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SendPkt
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PrepareForTransmit
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CopyFromPacketToBuffer
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MinTurnaroundTxTimeout
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[TestDataToTXBuff]
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Comments:
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Transmits in the NDIS env.
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**********************************************************************/
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#include "precomp.h"
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#include "protot.h"
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#pragma hdrstop
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#if DBG
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// for debug/test
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extern VOID TestDataToTXBuff(PCHAR, UINT, PUINT);
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#define TEST_PATTERN_SIZE 16
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CHAR TestPattern[] = {0,1,2,3,4,5,6,7,8,9,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F};
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#endif
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//-----------------------------------------------------------------------------
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// Procedure: [MKMiniportMultiSend]
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//
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// Description: This routine simply takes the pkt(s) passed down and queues
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// it to the trasmit queue (FirstTxQueue) for later processing. Each
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// pkt is marked NDIS_STATUS_PENDING) before returning.
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//
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// Arguments:
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// MiniportAdapterContext (Adapter Structure pointer)
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// PacketArray - an array of pointers to NDIS_PACKET structs
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// PacketCount - number of packets in PacketArray
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//
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// Returns: (none)
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//
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//-----------------------------------------------------------------------------
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VOID
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MKMiniportMultiSend(NDIS_HANDLE MiniportAdapterContext,
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PPNDIS_PACKET PacketArray,
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UINT NumberOfPackets)
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{
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PMK7_ADAPTER Adapter;
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NDIS_STATUS Status;
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UINT PacketCount;
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UINT i;
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PNDIS_PACKET QueuePacket;
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DBGFUNC("=> MKMiniportMultiSend");
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DBGLOG("=> MKMiniportMultiSend", 0);
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Adapter = PMK7_ADAPTER_FROM_CONTEXT_HANDLE(MiniportAdapterContext);
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NdisAcquireSpinLock(&Adapter->Lock);
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#if DBG
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Adapter->DbgSendCallCnt++;
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GDbgStat.txSndCnt++;
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Adapter->DbgSentCnt++;
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Adapter->DbgSentPktsCnt += NumberOfPackets;
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#endif
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// Q 'em up 1st
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for(PacketCount=0; PacketCount < NumberOfPackets; PacketCount++) {
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Adapter->NumPacketsQueued++;
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EnqueuePacket( Adapter->FirstTxQueue,
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Adapter->LastTxQueue,
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PacketArray[PacketCount] );
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NDIS_SET_PACKET_STATUS(PacketArray[PacketCount], NDIS_STATUS_PENDING);
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}
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if (Adapter->writePending || (Adapter->IOMode == TX_MODE)) {
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// In TX mode: Meaning TX outstanding. We wait for the TX comp to kick
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// off the next TX.
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// Or we have writePending, which means a pkt is on q waiting for
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// MinTurnaroundTimeout.
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DBGLOG("<= MKMiniportMultiSend: TX_MODE", 0);
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NdisReleaseSpinLock(&Adapter->Lock);
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return;
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}
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ASSERT(Adapter->tcbUsed == 0);
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QueuePacket = Adapter->FirstTxQueue;
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Status = SendPkt(Adapter, QueuePacket);
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DBGLOG("<= MKMiniportMultiSend", 0);
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NdisReleaseSpinLock(&Adapter->Lock);
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MK7EnableInterrupt(Adapter);
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}
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//-----------------------------------------------------------------------------
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// Procedure: [SendPkt]
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//
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// Description: This sets up (copies) the pkt to the TX ring data buffer in
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// preparation for TX. The caller then needs to Enable Int & Prompt to
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// initiate the actual tx at hw level.
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//
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// Arguments:
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// Adapter - ptr to Adapter object instance
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// Packet - A pointer to a descriptor for the packet that is to be
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// transmitted.
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// Returns:
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// NDIS_STATUS_SUCCESS - We copied the entire packet into a TRD data buff,
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// so we can immediately return the packet/buffer
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// back to the upper layers.
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// NDIS_STATUS_RESOURCE - No resource. NDIS should re-send this to us
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// at a later time. (Caller should re-Q the pkt.)
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//----------------------------------------------------------------------
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NDIS_STATUS
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SendPkt( PMK7_ADAPTER Adapter,
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PNDIS_PACKET Packet)
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{
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PTCB tcb;
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UINT bytestosend, sndcnt, nextavail;
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MK7REG mk7reg;
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BOOLEAN timeout;
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PNDIS_IRDA_PACKET_INFO packetInfo;
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PNDIS_PACKET QueuePacket;
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//****************************************
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// To send a pkt we do the following:
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// 1. Check Min Turnaround Time.
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// 2. Check if there's avail TX resource. It not we return "resource".
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// (We assume that there's outstanding TXs to trigger subseuqent TX
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// completion interrupts, which will keep the ball rolling.)
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// (RYM-IRDA-5+ Need to talk to Wayne about missed interrupts.)
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// 3. Copy the NDIS pkt into the contiguous TX buffer.
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// 4. The copied pkt could have been marked as the last pkt to go out
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// at the old speed after which we change speed. We check for this.
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//****************************************
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DBGFUNC("=> SendPkt");
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DBGLOG("=> SendPkt", 0);
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packetInfo = GetPacketInfo(Packet);
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if (packetInfo->MinTurnAroundTime) {
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UINT usecToWait = packetInfo->MinTurnAroundTime;
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UINT msecToWait;
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packetInfo->MinTurnAroundTime = 0;
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DBGLOG("<= SendPkt: Delay TX", 0);
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// Need to set IOMode = TX so if a multisend comes down before
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// the delayed TX timer goes off we just q.
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// Ndis timer has a 1ms granularity (in theory). Let's round off.
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msecToWait = (usecToWait<1000) ? 1 : (usecToWait+500)/1000;
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NdisMSetTimer(&Adapter->MinTurnaroundTxTimer, msecToWait);
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// 4.0.1 BOC
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MK7SwitchToTXMode(Adapter);
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// 4.0.1 EOC
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Adapter->writePending = TRUE;
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return (NDIS_STATUS_PENDING); // Say we're successful. We'll come back here.
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}
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// Avail TX resource
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if (Adapter->tcbUsed >= Adapter->NumTcb) {
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#if DBG
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GDbgStat.txNoTcb++;
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#endif
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DBGSTR(("STATUS (SendPkt): No avail TCB\n"));
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return (NDIS_STATUS_RESOURCES);
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}
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tcb = Adapter->pTcbArray[Adapter->nextAvailTcbIdx];
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bytestosend = PrepareForTransmit(Adapter, Packet, tcb);
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if (Adapter->changeSpeedAfterThisPkt == Packet) {
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Adapter->changeSpeedAfterThisPkt = NULL;
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Adapter->changeSpeedPending = CHANGESPEED_ON_DONE;
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}
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#if DBG
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if (bytestosend > GDbgStat.txLargestPkt) {
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GDbgStat.txLargestPkt = bytestosend;
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}
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#endif
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// 1.0.0
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if (bytestosend == 0) {
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#if DBG
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DbgPrint ("==> OB \n\r");
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#endif
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// Simplified change speed
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if (Adapter->changeSpeedPending == CHANGESPEED_ON_DONE) {
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// Note: We're changing speed in TX mode.
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MK7ChangeSpeedNow(Adapter);
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Adapter->changeSpeedPending = 0;
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}
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// For each completing TX there's a corresponding q'd pkt.
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// We release it here.
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QueuePacket = Adapter->FirstTxQueue;
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DequeuePacket(Adapter->FirstTxQueue, Adapter->LastTxQueue);
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Adapter->NumPacketsQueued--;
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NDIS_SET_PACKET_STATUS(QueuePacket, NDIS_STATUS_RESOURCES);
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NdisMSendComplete( Adapter->MK7AdapterHandle,
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QueuePacket,
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NDIS_STATUS_RESOURCES);
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return(NDIS_STATUS_RESOURCES);
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}
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// Take care of ring wrap when incrementing.
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Adapter->nextAvailTcbIdx++;
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Adapter->nextAvailTcbIdx %= Adapter->NumTcb;
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Adapter->tcbUsed++;
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tcb->trd->count = bytestosend;
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GrantTrdToHw(tcb->trd);
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MK7SwitchToTXMode(Adapter);
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#if DBG
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NdisGetCurrentSystemTime((PLARGE_INTEGER)&GDbgTACmdTime[GDbgTATimeIdx]);
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#endif
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DBGLOG("<= SendPkt", 0);
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return (NDIS_STATUS_SUCCESS);
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}
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//-----------------------------------------------------------------------------
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// Procedure: [PrepareForTransmit]
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//
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// Description: When we come here we know there's an available TCB for the next
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// TX. We move the Packet data into the tx buff associated w/ the TCB.
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//
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// Arguments:
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// Adapter - ptr to Adapter object instance
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// Packet - A pointer to a descriptor for the packet that is to be
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// transmitted.
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// SwTcb - Pointer to a software structure that represents a hardware TCB.
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//
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// Returns:
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// TRUE If we were able to acquire the necessary TRD's or Coalesce buffer
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// for the packet in we are attempting to prepare for transmission.
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// FALSE If we needed a coalesce buffer, and we didn't have any available.
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//-----------------------------------------------------------------------------
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UINT PrepareForTransmit(PMK7_ADAPTER Adapter,
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PNDIS_PACKET Packet,
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PTCB tcb)
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{
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UINT BytesCopied;
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if (Adapter->CurrentSpeed <= MAX_SIR_SPEED) {
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// SIR needs additional software process
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if ( NdisToSirPacket(Adapter,
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Packet,
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(UCHAR *)tcb->buff,
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MK7_MAXIMUM_PACKET_SIZE,
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&BytesCopied) ) {
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return(BytesCopied);
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}
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return(0);
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}
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#if DBG
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if (Adapter->DbgTestDataCnt > 0) {
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TestDataToTXBuff(tcb->buff, Adapter->DbgTestDataCnt, &BytesCopied);
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return(BytesCopied);
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}
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#endif
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tcb->Packet = Packet;
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NdisQueryPacket(tcb->Packet,
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&tcb->NumPhysDesc,
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&tcb->BufferCount,
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&tcb->FirstBuffer,
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&tcb->PacketLength);
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// Alignment??
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//
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// Copy from packet to TCB data buffer
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CopyFromPacketToBuffer( Adapter,
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tcb->Packet,
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tcb->PacketLength,
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tcb->buff,
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tcb->FirstBuffer,
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&BytesCopied );
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// ASSERT(BytesCopied == tcb->PacketLength);
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if (BytesCopied != tcb->PacketLength) {
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#if DBG
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DbgPrint (" ==> BytesCopied Unmatched\n\r");
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#endif
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return(0);
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}
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else
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return(BytesCopied);
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}
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//-----------------------------------------------------------------------------
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// Procedure: [CopyFromPacketToBuffer]
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//
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// Description: This routine will copy a packet to a the passed buffer (which
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// in this case will be a coalesce buffer).
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//
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// Arguments:
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// Adapter - ptr to Adapter object instance
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// Packet - The packet to copy from.
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// BytesToCopy - The number of bytes to copy from the packet.
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// DestBuffer - The destination of the copy.
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// FirstBuffer - The first buffer of the packet that we are copying from.
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//
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// Result:
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// BytesCopied - The number of bytes actually copied
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//
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// Returns: (none)
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//-----------------------------------------------------------------------------
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VOID
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CopyFromPacketToBuffer( PMK7_ADAPTER Adapter,
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PNDIS_PACKET Packet,
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UINT BytesToCopy,
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PCHAR DestBuffer,
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PNDIS_BUFFER FirstBuffer,
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PUINT BytesCopied)
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{
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PNDIS_BUFFER CurrentBuffer, NextBuffer;
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PVOID VirtualAddress;
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UINT CurrentLength;
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UINT AmountToMove;
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*BytesCopied = 0;
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if (!BytesToCopy)
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return;
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if (FirstBuffer == NULL)
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return;
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CurrentBuffer = FirstBuffer;
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while (CurrentBuffer != NULL) {
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NdisQueryBufferSafe(CurrentBuffer, &VirtualAddress, &CurrentLength, 16);
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if (!VirtualAddress) {
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#if DBG
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DbgPrint("==> Throw Away Failed Packet\n\r");
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#endif
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return;
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}
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NdisGetNextBuffer(CurrentBuffer, &NextBuffer);
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CurrentBuffer = NextBuffer;
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}
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CurrentBuffer = FirstBuffer;
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// NDIS requirement
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// NdisQueryBuffer(CurrentBuffer,&VirtualAddress,&CurrentLength);
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NdisQueryBufferSafe(CurrentBuffer, &VirtualAddress, &CurrentLength, 16);
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while (BytesToCopy) {
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while (!CurrentLength) {
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NdisGetNextBuffer(CurrentBuffer, &CurrentBuffer);
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// If we've reached the end of the packet. We return with what
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// we've done so far (which must be shorter than requested).
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if (!CurrentBuffer)
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return;
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// NDIS requirement
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// NdisQueryBuffer(CurrentBuffer,&VirtualAddress,&CurrentLength);
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NdisQueryBufferSafe(CurrentBuffer, &VirtualAddress, &CurrentLength, 16);
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}
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// Compute how much data to move from this fragment
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if (CurrentLength > BytesToCopy)
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AmountToMove = BytesToCopy;
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else
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AmountToMove = CurrentLength;
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// Copy the data.
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NdisMoveMemory(DestBuffer, VirtualAddress, AmountToMove);
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// Update destination pointer
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DestBuffer = (PCHAR) DestBuffer + AmountToMove;
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// Update counters
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*BytesCopied +=AmountToMove;
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BytesToCopy -=AmountToMove;
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CurrentLength = 0;
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}
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DBGLOG(" CopyFromPacketToBuffer: Bytes to Copy = ", BytesToCopy);
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DBGLOG(" CopyFromPacketToBuffer: Bytes Copied = ", *BytesCopied);
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}
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//-----------------------------------------------------------------------------
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// Procedure: [MinTurnaroundTxTimeout] RYM-2K-1TX
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//
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// Description: Delayed write because of Min Turnaround requirement. Just
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// do send.
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//-----------------------------------------------------------------------------
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VOID MinTurnaroundTxTimeout(PVOID sysspiff1,
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NDIS_HANDLE MiniportAdapterContext,
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PVOID sysspiff2,
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PVOID sysspiff3)
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{
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PMK7_ADAPTER Adapter;
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PNDIS_PACKET QueuePacket;
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NDIS_STATUS Status;
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Adapter = PMK7_ADAPTER_FROM_CONTEXT_HANDLE(MiniportAdapterContext);
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DBGLOG("=> MinTurnaroundTxTimeout", 0);
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NdisAcquireSpinLock(&Adapter->Lock);
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QueuePacket = Adapter->FirstTxQueue;
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if (!QueuePacket) {
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NdisReleaseSpinLock(&Adapter->Lock);
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return;
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}
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Status = SendPkt(Adapter, QueuePacket);
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// Note: We set false here because we just processed a q'd TX pkt
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// that was waiting for MinTurnaround. However, we may still stay
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// in TX mode based on other pkts on the q. This is determined in
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// TX comp. Either writePending or IOMode will prevent new pkts
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// from above to get thru out of sequence.
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Adapter->writePending = FALSE;
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NdisReleaseSpinLock(&Adapter->Lock);
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MK7EnableInterrupt(Adapter);
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}
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#if DBG
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//--------------------------------------------------------------------------------
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// Procedure: [TestDataToTXBuff]
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//
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// Description: Put test data in tx buff instead of data that came down.
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//--------------------------------------------------------------------------------
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VOID TestDataToTXBuff( PCHAR DestBuffer,
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UINT BytesToCopy,
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PUINT BytesCopied)
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{
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UINT i, j;
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for(i=0,j=0; j<BytesToCopy; j++) {
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DestBuffer[j] = TestPattern[i];
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i++;
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i %= TEST_PATTERN_SIZE;
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}
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*BytesCopied = BytesToCopy;
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}
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#endif
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