769 lines
24 KiB
C
769 lines
24 KiB
C
/*
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************************************************************************
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*
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* NSCFIR.C
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*
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*
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* Portions Copyright (C) 1996-2001 National Semiconductor Corp.
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* All rights reserved.
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* Copyright (C) 1996-2001 Microsoft Corporation. All Rights Reserved.
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*
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*
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*
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*************************************************************************
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*/
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#include "nsc.h"
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#include "nsctypes.h"
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//#include "dma.h"
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VOID NSC_FIR_ISR(IrDevice *thisDev, BOOLEAN *claimingInterrupt,
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BOOLEAN *requireDeferredCallback)
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{
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LOG("==> NSC_FIR_ISR", 0);
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DEBUGFIR(DBG_ISR|DBG_OUT, ("NSC: ==> NSC_FIR_ISR(0x%x)\n", thisDev));
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thisDev->InterruptMask = NSC_ReadBankReg(thisDev->portInfo.ioBase, 0, 1);
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thisDev->InterruptStatus = NSC_ReadBankReg(thisDev->portInfo.ioBase, 0, 2) & thisDev->FirIntMask;
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thisDev->AuxStatus = NSC_ReadBankReg(thisDev->portInfo.ioBase, 0, 7);
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thisDev->LineStatus = NSC_ReadBankReg(thisDev->portInfo.ioBase, 0, 5);
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LOG("InterruptMask: ", thisDev->InterruptMask);
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LOG("InterruptStatus: ", thisDev->InterruptStatus);
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LOG("AuxStatus: ", thisDev->AuxStatus);
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LOG("LineStatus: ", thisDev->LineStatus);
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DEBUGFIR(DBG_ISR|DBG_OUT, ("NSC: InterruptMask = 0x%x\n", thisDev->InterruptMask));
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DEBUGFIR(DBG_ISR|DBG_OUT, ("NSC: InterruptStatus = 0x%x\n", thisDev->InterruptStatus));
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DEBUGFIR(DBG_ISR|DBG_OUT, ("NSC: AuxStatus = 0x%x\n", thisDev->AuxStatus));
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DEBUGFIR(DBG_ISR|DBG_OUT, ("NSC: LineStatus = 0x%x\n", thisDev->LineStatus));
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if (thisDev->InterruptStatus) {
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//
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// After seeing the first packet switch the interrupt
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// to timer and use the DMA counter to decide if receptions
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// have stopped.
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//
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if (thisDev->InterruptStatus & LS_EV) {
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//
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// Got a link status interrupt
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//
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if (thisDev->LineStatus & LSR_FR_END) {
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//
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// The frame end status is set
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//
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if (!thisDev->FirTransmitPending) {
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//
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// we weren't tansmitting
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//
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// thisDev->IntMask = 0x90;
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//
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// Enable the Timer
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//
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// NSC_WriteBankReg(thisDev->portInfo.ioBase, 4, 2, 0x01);
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// thisDev->LastReadDMACount = thisDev->rcvDmaOffset;
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}
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}
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if (thisDev->LineStatus & LSR_OE) {
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DBGERR(("rx ov"));
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// DbgBreakPoint();
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}
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}
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if (thisDev->InterruptStatus & TMR_EV){
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//
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// Disable Timer during call to DPC bit.
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//
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NSC_WriteBankReg(thisDev->portInfo.ioBase, 4, 2, 0x00);
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NSC_WriteBankReg(thisDev->portInfo.ioBase, 0, 7, 0x80);
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}
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*claimingInterrupt = TRUE;
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*requireDeferredCallback = TRUE;
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SetCOMInterrupts(thisDev, FALSE);
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if (thisDev->UIR_ModuleId >= 0x16 )
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{
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// This is for the Frame stop mode when the ISR is interrupted
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// after every Frame Tx
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//
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if ((thisDev->AuxStatus & 0x08)
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&& (thisDev->InterruptStatus & 0x04)
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&& (thisDev->FirTransmitPending == TRUE))
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{
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if (thisDev->LineStatus&0x40)
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{
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NSC_WriteBankReg(thisDev->portInfo.ioBase, 0, 7, 0x40);
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DBGERR(("FIR: Transmit underrun\n"));
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}
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}
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}
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}
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else {
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*claimingInterrupt = FALSE;
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*requireDeferredCallback = FALSE;
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}
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LOG("claimingInterrupt = ", *claimingInterrupt);
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LOG("requireDeferredCallback = ", *requireDeferredCallback);
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DEBUGFIR(DBG_ISR|DBG_OUT, ("NSC: <== NSC_FIR_ISR\n"));
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}
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typedef struct {
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IrDevice *thisDev;
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ULONG_PTR Offset;
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ULONG_PTR Length;
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} DMASPACE;
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void SkipNonDmaBuffers(PLIST_ENTRY Head, PLIST_ENTRY *Entry)
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{
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while (Head!=*Entry)
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{
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rcvBuffer *rcvBuf = CONTAINING_RECORD(*Entry,
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rcvBuffer,
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listEntry);
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if (rcvBuf->isDmaBuf)
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{
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break;
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}
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else
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{
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*Entry = (*Entry)->Flink;
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}
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}
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}
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//
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// We have two lists of buffers which occupy our DMA space. We
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// want to walk this list and find the largest space for putting
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// new packets.
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//
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rcvBuffer *GetNextPacket(DMASPACE *Space,
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PLIST_ENTRY *CurrFull,
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PLIST_ENTRY *CurrPend)
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{
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rcvBuffer *Result = NULL;
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SkipNonDmaBuffers(&Space->thisDev->rcvBufFull, CurrFull);
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SkipNonDmaBuffers(&Space->thisDev->rcvBufPend, CurrPend);
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if (*CurrFull==&Space->thisDev->rcvBufFull)
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{
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// Full list is finished.
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if (*CurrPend!=&Space->thisDev->rcvBufPend)
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{
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// Any entry on the pend list is valid. Take the
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// next one and advance the pointer.
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Result = CONTAINING_RECORD(*CurrPend,
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rcvBuffer,
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listEntry);
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*CurrPend = (*CurrPend)->Flink;
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}
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else
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{
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// Both lists are finished. We will return NULL.
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}
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}
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else
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{
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if (*CurrPend==&Space->thisDev->rcvBufPend)
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{
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// Pend list is finished. Take anything from the
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// Full list, advance the pointer.
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Result = CONTAINING_RECORD(*CurrFull,
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rcvBuffer,
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listEntry);
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*CurrFull = (*CurrFull)->Flink;
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}
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else
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{
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// Both list have valid entries. Compare the two and take the
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// one that appears in the buffer first.
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rcvBuffer *Full, *Pend;
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Full = CONTAINING_RECORD(*CurrFull,
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rcvBuffer,
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listEntry);
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Pend = CONTAINING_RECORD(*CurrPend,
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rcvBuffer,
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listEntry);
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if (Full->dataBuf < Pend->dataBuf)
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{
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// Full is the winner. Take it.
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Result = Full;
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*CurrFull = (*CurrFull)->Flink;
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}
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else
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{
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// Pend is the winner. Take it.
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Result = Pend;
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*CurrPend = (*CurrPend)->Flink;
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}
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}
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}
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if (Result)
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{
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ASSERT(Result->isDmaBuf);
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}
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return Result;
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}
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BOOLEAN SynchronizedFindLargestSpace(IN PVOID Context)
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{
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DMASPACE *Space = Context;
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IrDevice *thisDev = Space->thisDev;
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BOOLEAN Result;
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PLIST_ENTRY Full, Pend;
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rcvBuffer *Current = NULL;
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ASSERT(sizeof(ULONG)==sizeof(PVOID));
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if (IsListEmpty(&thisDev->rcvBufFull) && IsListEmpty(&thisDev->rcvBufPend))
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{
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Space->Offset = (ULONG_PTR)thisDev->portInfo.dmaReadBuf;
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Space->Length = RCV_DMA_SIZE;
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}
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else
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{
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ULONG_PTR EndOfLast;
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ULONG_PTR ThisSpace;
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Full = thisDev->rcvBufFull.Flink;
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Pend = thisDev->rcvBufPend.Flink;
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Space->Length = 0;
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EndOfLast = Space->Offset = (ULONG_PTR)thisDev->portInfo.dmaReadBuf;
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Current = GetNextPacket(Space, &Full, &Pend);
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while (Current)
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{
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// It's possible to get a packet that is from SIR. If so, skip it.
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if (Current->isDmaBuf)
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{
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ASSERT((ULONG_PTR)Current->dataBuf >= EndOfLast);
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ThisSpace = (ULONG_PTR)Current->dataBuf - EndOfLast;
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// ASSERT the pointer is actually in our DMA buffer.
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ASSERT(Current->dataBuf >= thisDev->portInfo.dmaReadBuf ||
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Current->dataBuf < thisDev->portInfo.dmaReadBuf+RCV_DMA_SIZE);
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if (ThisSpace > Space->Length)
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{
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Space->Offset = EndOfLast;
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Space->Length = ThisSpace;
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}
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EndOfLast = (ULONG_PTR)Current->dataBuf + Current->dataLen;
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}
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Current = GetNextPacket(Space, &Full, &Pend);
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}
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// Now we do one more calculation for the space after the end of the list.
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ThisSpace = (ULONG_PTR)thisDev->portInfo.dmaReadBuf + RCV_DMA_SIZE - (ULONG_PTR)EndOfLast;
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if (ThisSpace > Space->Length)
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{
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Space->Offset = EndOfLast;
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Space->Length = ThisSpace;
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}
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// Round off to start DMA on 4 byte boundary
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Space->Length -= 4 - (Space->Offset & 3);
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Space->Offset = (Space->Offset+3) & (~3);
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}
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// We want space relative to start of buffer.
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Space->Offset -= (ULONG_PTR)thisDev->portInfo.dmaReadBuf;
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Result = (Space->Length >= MAX_RCV_DATA_SIZE + FAST_IR_FCS_SIZE);
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if (!Result)
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{
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DEBUGFIR(DBG_ERR, ("NSC: ERROR: Not enough space to DMA full packet %x\n", thisDev));
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}
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return Result;
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}
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BOOLEAN FindLargestSpace(IN IrDevice *thisDev,
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OUT PULONG_PTR pOffset,
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OUT PULONG_PTR pLength)
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{
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DMASPACE Space;
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BOOLEAN Result;
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Space.Offset = 0;
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Space.Length = 0;
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Space.thisDev = thisDev;
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// NdisAcquireSpinLock(&thisDev->QueueLock);
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Result = NdisMSynchronizeWithInterrupt(
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&thisDev->interruptObj,
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SynchronizedFindLargestSpace,
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&Space
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);
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// NdisReleaseSpinLock(&thisDev->QueueLock);
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*pOffset = Space.Offset;
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*pLength = Space.Length;
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return Result;
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}
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void FIR_DeliverFrames(IrDevice *thisDev)
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{
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UCHAR frameStat;
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NDIS_STATUS stat;
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ULONG rcvFrameSize;
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PUCHAR NewFrame;
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ULONG_PTR LastReadDMACount, EndOfData;
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BOOLEAN resetDma = FALSE, OverflowOccurred = FALSE;
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BOOLEAN Discarding = thisDev->DiscardNextPacketSet;
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const UINT fcsSize = ( thisDev->currentSpeed >= MIN_FIR_SPEED) ?
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FAST_IR_FCS_SIZE : MEDIUM_IR_FCS_SIZE;
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LOG("==> FIR_DeliverFrames", 0);
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DEBUGFIR(DBG_RX|DBG_OUT, ("NSC: ==> FIR_DeliverFrames(0x%x)\n", thisDev));
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LastReadDMACount = NdisMReadDmaCounter(thisDev->DmaHandle);
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// Check for data received since the last time we were here.
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// We also check for data in fifo. If there is some, we wait, as long
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// as the DMA still has room to capture data.
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if ((LastReadDMACount > 0)
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&&
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((LastReadDMACount < thisDev->LastReadDMACount) || (SyncReadBankReg(&thisDev->interruptObj,thisDev->portInfo.ioBase, 2, 7) & 0x3f))) {
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//
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// if there are still bytes remaining in out transfer and we transfered something since
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// the last interrupt or there are still bytes in the fifo, then set a timer
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//
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thisDev->LastReadDMACount = LastReadDMACount;
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//
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// Set Timer Enable bit for another Timeout.
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//
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thisDev->FirIntMask = 0x90;
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SyncWriteBankReg(&thisDev->interruptObj,thisDev->portInfo.ioBase, 4, 2, 0x01);
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LOG("<== FIR_DeliverFrames-Early Return", 1);
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DEBUGFIR(DBG_RX|DBG_OUT, ("NSC: <== FIR_DeliverFrames\n"));
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return;
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}
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RegStats.RxDPC_Window++;
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stat=CompleteDmaTransferFromDevice(&thisDev->DmaUtil);
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if (stat != NDIS_STATUS_SUCCESS) {
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DBGERR(("NdisMCompleteDmaTransfer failed: %d\n", stat));
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ASSERT(0);
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}
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thisDev->FirReceiveDmaActive=FALSE;
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thisDev->DiscardNextPacketSet = FALSE;
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// Get the exact count.
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LastReadDMACount = NdisMReadDmaCounter(thisDev->DmaHandle);
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EndOfData = thisDev->rcvDmaOffset + thisDev->rcvDmaSize - LastReadDMACount;
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SyncGetFifoStatus(
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&thisDev->interruptObj,
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thisDev->portInfo.ioBase,
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&frameStat,
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&rcvFrameSize
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);
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if (frameStat == 0) DBGERR(("fdf no frames in fifo"));
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LOG("frameStat: ", (UINT) frameStat);
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DEBUGFIR(DBG_RX|DBG_OUT, ("NSC: frameStat = %xh\n", (UINT) frameStat));
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while ((frameStat & 0x80) && thisDev->rcvPktOffset < EndOfData) {
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/*
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* This status byte is valid; see what else it says...
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* Also mask off indeterminate bit.
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*/
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frameStat &= ~0xA0;
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/*
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* Whether the frame is good or bad, we must read the counter
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* FIFO to synchronize it with the frame status FIFO.
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*/
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if (Discarding)
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{
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DbgPrint("nsc: disc stat=%02x, lost=%d\n",frameStat,rcvFrameSize);
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// Do nothing
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}
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else if (frameStat) {
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/*
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* Some rcv error occurred. Reset DMA.
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*/
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LOG("*** RCV ERR: framStat in FIR_DeliverFrames:",
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frameStat);
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// DbgPrint("nsc: stat=%02x, lost=%d\n",frameStat,rcvFrameSize);
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DEBUGFIR(DBG_RX|DBG_ERR, ("NSC: RCV ERR: frameStat=%xh FrameSize=%d \n",
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(UINT)frameStat,rcvFrameSize));
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if (frameStat & 0x40) {
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if (frameStat & 0x01) {
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RegStats.StatusFIFOOverflows++;
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}
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if (frameStat & 0x02) {
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RegStats.ReceiveFIFOOverflows++;
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}
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RegStats.MissedPackets += rcvFrameSize;
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}
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else{
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if (frameStat & 0x01) {
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RegStats.StatusFIFOOverflows++;
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}
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if (frameStat & 0x02) {
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RegStats.ReceiveFIFOOverflows++;
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}
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if (frameStat & 0x04) {
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RegStats.ReceiveCRCErrors++;
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}
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if (frameStat & 0x08) {
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}
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if (frameStat & 0x10) {
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}
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LOG("Bytes Lost:",rcvFrameSize);
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ASSERT((thisDev->rcvPktOffset + rcvFrameSize)<= RCV_DMA_SIZE);
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/* Advance pointer past bad packet. */
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thisDev->rcvPktOffset += rcvFrameSize;
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}
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}
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else if (thisDev->rcvPktOffset + rcvFrameSize > EndOfData && !(frameStat&0x40))
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{
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DBGERR(("Packet won't fit in received data!\n"));
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DBGERR(("rcvPktOffset:%x rcvFrameSize:%x LastReadDmaCount:%x\n",
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thisDev->rcvPktOffset,
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rcvFrameSize,
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LastReadDMACount));
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DBGERR(("rcvDmaOffset:%x rcvDmaSize:%x EndOfData:%x\n",
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thisDev->rcvDmaOffset, thisDev->rcvDmaSize, EndOfData));
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// This packet will actually show up at the beginning of the
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// *next* DMA. We have inadvertently read the status early.
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// Save it for next time and get out.
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break;
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}
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else {
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DEBUGFIR(DBG_RX|DBG_OUT, ("NSC: *** >>> FIR_DeliverFrames DMA offset 0x%x:\n",
|
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thisDev->rcvDmaOffset));
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NewFrame = thisDev->portInfo.dmaReadBuf +
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thisDev->rcvPktOffset;
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/* Step offset for next buffer. */
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thisDev->rcvPktOffset += rcvFrameSize;
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ASSERT(thisDev->rcvPktOffset < RCV_DMA_SIZE);
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|
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/* Chop off FCS */
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rcvFrameSize -= fcsSize;
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if (rcvFrameSize <= MAX_NDIS_DATA_SIZE &&
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rcvFrameSize >= IR_ADDR_SIZE + IR_CONTROL_SIZE)
|
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{
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//
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// Queue this rcv packet. Move Newframe pointer
|
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// into RxDMA buffer.
|
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//
|
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RegStats.ReceivedPackets++;
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RegStats.RxWindow++;
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QueueReceivePacket(thisDev, NewFrame, rcvFrameSize, TRUE);
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}
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else {
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LOG("Error: invalid packet size "
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"in FIR_DeliverFrames", rcvFrameSize);
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DEBUGFIR(DBG_RX|DBG_ERR, ("NSC: invalid packet size in FIR_DeliverFrames; %xh > %xh\n", rcvFrameSize, MAX_RCV_DATA_SIZE));
|
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//
|
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// Discard the rest of the packets.
|
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//
|
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while (SyncReadBankReg(&thisDev->interruptObj,thisDev->portInfo.ioBase, 5, 5)&0x80)
|
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{
|
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SyncReadBankReg(&thisDev->interruptObj,thisDev->portInfo.ioBase, 5, 6);
|
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SyncReadBankReg(&thisDev->interruptObj,thisDev->portInfo.ioBase, 5, 7);
|
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}
|
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thisDev->DiscardNextPacketSet = TRUE;
|
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}
|
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}
|
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|
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SyncGetFifoStatus(
|
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&thisDev->interruptObj,
|
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thisDev->portInfo.ioBase,
|
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&frameStat,
|
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&rcvFrameSize
|
|
);
|
|
|
|
LOG("frameStat: ", (UINT) frameStat);
|
|
DEBUGFIR(DBG_RX|DBG_OUT, ("NSC: frameStat = %xh\n", (UINT) frameStat));
|
|
|
|
// Clear the line status register, of any past events.
|
|
thisDev->LineStatus =
|
|
SyncReadBankReg(&thisDev->interruptObj,thisDev->portInfo.ioBase, 0, 5);
|
|
}
|
|
|
|
thisDev->FirIntMask = 0x04;
|
|
|
|
SetupRecv(thisDev);
|
|
|
|
LOG("<== FIR_DeliverFrames", 1);
|
|
DEBUGFIR(DBG_RX|DBG_OUT, ("NSC: <== FIR_DeliverFrames\n"));
|
|
}
|
|
|
|
BOOLEAN NSC_Setup(IrDevice *thisDev)
|
|
{
|
|
NDIS_DMA_DESCRIPTION DMAChannelDcr;
|
|
NDIS_STATUS stat;
|
|
|
|
thisDev->rcvDmaOffset = 0;
|
|
|
|
/*
|
|
* Because we enable rcv DMA while SIR receives may still be
|
|
* going on, we need to keep a separate receive buffer for DMA.
|
|
* This buffer gets swapped with the rcvBuffer data pointer
|
|
* and must be the same size.
|
|
*/
|
|
thisDev->portInfo.dmaReadBuf = MyMemAlloc(RCV_DMA_SIZE, TRUE);
|
|
if (!thisDev->portInfo.dmaReadBuf){
|
|
return FALSE;
|
|
}
|
|
|
|
NdisAllocateBufferPool(&stat, &thisDev->dmaBufferPoolHandle, 2);
|
|
if (stat != NDIS_STATUS_SUCCESS){
|
|
LOG("Error: NdisAllocateBufferPool failed in NSC_Setup", 0);
|
|
DEBUGFIR(DBG_ERR, ("NSC: NdisAllocateBufferPool failed in NSC_Setup\n"));
|
|
return FALSE;
|
|
}
|
|
|
|
NdisAllocateBuffer(&stat, &thisDev->rcvDmaBuffer,
|
|
thisDev->dmaBufferPoolHandle,
|
|
thisDev->portInfo.dmaReadBuf,
|
|
RCV_DMA_SIZE);
|
|
if (stat != NDIS_STATUS_SUCCESS) {
|
|
LOG("Error: NdisAllocateBuffer failed (rcv) in NSC_Setup", 0);
|
|
DEBUGFIR(DBG_ERR, ("NSC: NdisAllocateBuffer failed (rcv) in NSC_Setup\n"));
|
|
return FALSE;
|
|
}
|
|
|
|
NdisAllocateBuffer(&stat, &thisDev->xmitDmaBuffer,
|
|
thisDev->dmaBufferPoolHandle,
|
|
thisDev->portInfo.writeBuf,
|
|
MAX_IRDA_DATA_SIZE);
|
|
if (stat != NDIS_STATUS_SUCCESS) {
|
|
LOG("NdisAllocateBuffer failed (xmit) in NSC_Setup", 0);
|
|
DEBUGFIR(DBG_ERR, ("NSC: NdisAllocateBuffer failed (xmit) in NSC_Setup\n"));
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Initialize rcv DMA channel
|
|
*/
|
|
DMAChannelDcr.DemandMode = TRUE;
|
|
DMAChannelDcr.AutoInitialize = FALSE;
|
|
DMAChannelDcr.DmaChannelSpecified = FALSE;
|
|
DMAChannelDcr.DmaWidth = Width8Bits;
|
|
DMAChannelDcr.DmaSpeed = Compatible;
|
|
DMAChannelDcr.DmaPort = 0;
|
|
DMAChannelDcr.DmaChannel = thisDev->portInfo.DMAChannel; // 0;
|
|
|
|
stat = NdisMRegisterDmaChannel(&thisDev->DmaHandle,
|
|
thisDev->ndisAdapterHandle,
|
|
thisDev->portInfo.DMAChannel,
|
|
FALSE, &DMAChannelDcr, RCV_DMA_SIZE);
|
|
|
|
if (stat != NDIS_STATUS_SUCCESS) {
|
|
DEBUGFIR(DBG_ERR, ("NSC: NdisMRegisterDmaChannel failed\n"));
|
|
DbgBreakPoint();
|
|
return FALSE;
|
|
}
|
|
|
|
InitializeDmaUtil(
|
|
&thisDev->DmaUtil,
|
|
thisDev->DmaHandle
|
|
);
|
|
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
void NSC_Shutdown(IrDevice *thisDev)
|
|
{
|
|
if (thisDev->DmaHandle){
|
|
NdisMDeregisterDmaChannel(thisDev->DmaHandle);
|
|
thisDev->DmaHandle = NULL;
|
|
}
|
|
|
|
if (thisDev->xmitDmaBuffer){
|
|
NdisFreeBuffer( thisDev->xmitDmaBuffer);
|
|
thisDev->xmitDmaBuffer = NULL;
|
|
}
|
|
|
|
if (thisDev->rcvDmaBuffer){
|
|
NdisFreeBuffer(thisDev->rcvDmaBuffer);
|
|
thisDev->rcvDmaBuffer = NULL;
|
|
}
|
|
|
|
if (thisDev->dmaBufferPoolHandle){
|
|
NdisFreeBufferPool(thisDev->dmaBufferPoolHandle);
|
|
thisDev->dmaBufferPoolHandle = NULL;
|
|
}
|
|
if (thisDev->portInfo.dmaReadBuf){
|
|
MyMemFree(thisDev->portInfo.dmaReadBuf, RCV_DMA_SIZE, TRUE);
|
|
thisDev->portInfo.dmaReadBuf = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
BOOLEAN NdisToFirPacket(IrDevice *thisDev, PNDIS_PACKET Packet,
|
|
UCHAR *irPacketBuf, UINT irPacketBufLen, UINT *irPacketLen)
|
|
{
|
|
PNDIS_BUFFER ndisBuf;
|
|
UINT ndisPacketBytes = 0;
|
|
UINT ndisPacketLen;
|
|
|
|
LOG("==> NdisToFirPacket", 0);
|
|
DEBUGFIR(DBG_OUT, ("NSC: ==> NdisToFirPacket(0x%x)\n", thisDev));
|
|
|
|
/*
|
|
* Get the packet's entire length and its first NDIS buffer
|
|
*/
|
|
NdisQueryPacket(Packet, NULL, NULL, &ndisBuf, &ndisPacketLen);
|
|
|
|
LOG("NdisToFirPacket, number of bytes:", ndisPacketLen);
|
|
DEBUGFIR(DBG_OUT, ("NSC: NdisToFirPacket, number of bytes: %d\n", ndisPacketLen));
|
|
|
|
/*
|
|
* Make sure that the packet is big enough to be legal.
|
|
* It consists of an A, C, and variable-length I field.
|
|
*/
|
|
if (ndisPacketLen < IR_ADDR_SIZE + IR_CONTROL_SIZE){
|
|
LOG("Error: packet too short in ", ndisPacketLen);
|
|
DEBUGFIR(DBG_ERR, ("NSC: packet too short in NdisToFirPacket (%d bytes)\n", ndisPacketLen));
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* Make sure that we won't overwrite our contiguous buffer.
|
|
*/
|
|
if (ndisPacketLen > irPacketBufLen){
|
|
/*
|
|
* The packet is too large
|
|
* Tell the caller to retry with a packet size large
|
|
* enough to get past this stage next time.
|
|
*/
|
|
LOG("Error: packet too large in ", ndisPacketLen);
|
|
DEBUGFIR(DBG_ERR, ("NSC: Packet too large in NdisToIrPacket (%d=%xh bytes), MAX_IRDA_DATA_SIZE=%d, irPacketBufLen=%d.\n",
|
|
ndisPacketLen, ndisPacketLen, MAX_IRDA_DATA_SIZE, irPacketBufLen));
|
|
*irPacketLen = ndisPacketLen;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Read the NDIS packet into a contiguous buffer.
|
|
* We have to do this in two steps so that we can compute the
|
|
* FCS BEFORE applying escape-byte transparency.
|
|
*/
|
|
while (ndisBuf) {
|
|
UCHAR *bufData;
|
|
UINT bufLen;
|
|
|
|
NdisQueryBuffer(ndisBuf, (PVOID *)&bufData, &bufLen);
|
|
|
|
if (bufData==NULL || (ndisPacketBytes + bufLen > ndisPacketLen)){
|
|
/*
|
|
* Packet was corrupt -- it misreported its size.
|
|
*/
|
|
*irPacketLen = 0;
|
|
ASSERT(0);
|
|
return FALSE;
|
|
}
|
|
|
|
NdisMoveMemory((PVOID)(irPacketBuf+ndisPacketBytes),
|
|
(PVOID)bufData, (ULONG)bufLen);
|
|
ndisPacketBytes += bufLen;
|
|
|
|
NdisGetNextBuffer(ndisBuf, &ndisBuf);
|
|
}
|
|
|
|
LOG("Ir Command byte ", (UINT)*(irPacketBuf+1));
|
|
|
|
/*
|
|
* Do a sanity check on the length of the packet.
|
|
*/
|
|
if (ndisPacketBytes != ndisPacketLen){
|
|
/*
|
|
* Packet was corrupt -- it misreported its size.
|
|
*/
|
|
LOG("Error: Packet corrupt in NdisToIrPacket "
|
|
"(buffer lengths don't add up to packet length)", 0);
|
|
DEBUGFIR(DBG_ERR, ("NSC: Packet corrupt in NdisToIrPacket (buffer lengths don't add up to packet length).\n"));
|
|
*irPacketLen = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
#ifdef DBG_ADD_PKT_ID
|
|
if (addPktIdOn){
|
|
static USHORT uniqueId = 0;
|
|
DEBUGFIR(DBG_OUT, ("NSC: *** --> SEND PKT ID: %xh\n", (UINT)uniqueId));
|
|
LOG("ID: Send (FIR) Pkt id:", uniqueId);
|
|
*(USHORT *)(irPacketBuf+ndisPacketBytes) = uniqueId++;
|
|
ndisPacketBytes += sizeof(USHORT);
|
|
}
|
|
#endif
|
|
|
|
*irPacketLen = ndisPacketBytes;
|
|
|
|
LOG("<== NdisToFirPacket", 0);
|
|
DEBUGFIR(DBG_OUT, ("NSC: <== NdisToFirPacket\n"));
|
|
|
|
return TRUE;
|
|
}
|