diff options
Diffstat (limited to 'dev/ns_gige.cc')
| -rw-r--r-- | dev/ns_gige.cc | 70 |
1 files changed, 49 insertions, 21 deletions
diff --git a/dev/ns_gige.cc b/dev/ns_gige.cc index 108f2616c..4e7deba90 100644 --- a/dev/ns_gige.cc +++ b/dev/ns_gige.cc @@ -102,7 +102,7 @@ NSGigE::NSGigE(Params *p) txDmaReadEvent(this), txDmaWriteEvent(this), dmaDescFree(p->dma_desc_free), dmaDataFree(p->dma_data_free), txDelay(p->tx_delay), rxDelay(p->rx_delay), - rxKickTick(0), txKickTick(0), + rxKickTick(0), rxKickEvent(this), txKickTick(0), txKickEvent(this), txEvent(this), rxFilterEnable(p->rx_filter), acceptBroadcast(false), acceptMulticast(false), acceptUnicast(false), acceptPerfect(false), acceptArp(false), @@ -841,7 +841,8 @@ NSGigE::write(MemReqPtr &req, const uint8_t *data) panic("writing to read-only or reserved CFGR bits!\n"); regs.config |= reg & ~(CFGR_LNKSTS | CFGR_SPDSTS | CFGR_DUPSTS | - CFGR_RESERVED | CFGR_T64ADDR | CFGR_PCI64_DET); + CFGR_RESERVED | CFGR_T64ADDR | + CFGR_PCI64_DET); // all these #if 0's are because i don't THINK the kernel needs to // have these implemented. if there is a problem relating to one of @@ -1487,13 +1488,19 @@ NSGigE::rxKick() DPRINTF(EthernetSM, "receive kick rxState=%s (rxBuf.size=%d)\n", NsRxStateStrings[rxState], rxFifo.size()); - if (rxKickTick > curTick) { - DPRINTF(EthernetSM, "receive kick exiting, can't run till %d\n", - rxKickTick); - return; + next: + if (clock) { + if (rxKickTick > curTick) { + DPRINTF(EthernetSM, "receive kick exiting, can't run till %d\n", + rxKickTick); + + goto exit; + } + + // Go to the next state machine clock tick. + rxKickTick = curTick + cycles(1); } - next: switch(rxDmaState) { case dmaReadWaiting: if (doRxDmaRead()) @@ -1561,8 +1568,7 @@ NSGigE::rxKick() if (rxDmaState != dmaIdle) goto exit; - DPRINTF(EthernetDesc, - "rxDescCache: addr=%08x read descriptor\n", + DPRINTF(EthernetDesc, "rxDescCache: addr=%08x read descriptor\n", regs.rxdp & 0x3fffffff); DPRINTF(EthernetDesc, "rxDescCache: link=%08x bufptr=%08x cmdsts=%08x extsts=%08x\n", @@ -1783,7 +1789,6 @@ NSGigE::rxKick() DPRINTF(EthernetSM, "entering next rxState=%s\n", NsRxStateStrings[rxState]); - goto next; exit: @@ -1792,6 +1797,9 @@ NSGigE::rxKick() */ DPRINTF(EthernetSM, "rx state machine exited rxState=%s\n", NsRxStateStrings[rxState]); + + if (clock && !rxKickEvent.scheduled()) + rxKickEvent.schedule(rxKickTick); } void @@ -1954,13 +1962,18 @@ NSGigE::txKick() DPRINTF(EthernetSM, "transmit kick txState=%s\n", NsTxStateStrings[txState]); - if (txKickTick > curTick) { - DPRINTF(EthernetSM, "transmit kick exiting, can't run till %d\n", - txKickTick); - return; + next: + if (clock) { + if (txKickTick > curTick) { + DPRINTF(EthernetSM, "transmit kick exiting, can't run till %d\n", + txKickTick); + goto exit; + } + + // Go to the next state machine clock tick. + txKickTick = curTick + cycles(1); } - next: switch(txDmaState) { case dmaReadWaiting: if (doTxDmaRead()) @@ -2022,6 +2035,8 @@ NSGigE::txKick() if (txDmaState != dmaIdle) goto exit; + DPRINTF(EthernetDesc, "txDescCache: addr=%08x read descriptor\n", + regs.txdp & 0x3fffffff); DPRINTF(EthernetDesc, "txDescCache: link=%08x bufptr=%08x cmdsts=%08x extsts=%08x\n", txDescCache.link, txDescCache.bufptr, txDescCache.cmdsts, @@ -2186,7 +2201,12 @@ NSGigE::txKick() if (txDescCache.cmdsts & CMDSTS_INTR) devIntrPost(ISR_TXDESC); - txState = txAdvance; + if (!txEnable) { + DPRINTF(EthernetSM, "halting TX state machine\n"); + txState = txIdle; + goto exit; + } else + txState = txAdvance; break; case txAdvance: @@ -2215,7 +2235,6 @@ NSGigE::txKick() DPRINTF(EthernetSM, "entering next txState=%s\n", NsTxStateStrings[txState]); - goto next; exit: @@ -2224,6 +2243,9 @@ NSGigE::txKick() */ DPRINTF(EthernetSM, "tx state machine exited txState=%s\n", NsTxStateStrings[txState]); + + if (clock && !txKickEvent.scheduled()) + txKickEvent.schedule(txKickTick); } void @@ -2429,6 +2451,7 @@ NSGigE::serialize(ostream &os) SERIALIZE_SCALAR(rxDescCache.bufptr); SERIALIZE_SCALAR(rxDescCache.cmdsts); SERIALIZE_SCALAR(rxDescCache.extsts); + SERIALIZE_SCALAR(extstsEnable); /* * Serialize tx state machine @@ -2441,6 +2464,7 @@ NSGigE::serialize(ostream &os) SERIALIZE_SCALAR(txDescCnt); int txDmaState = this->txDmaState; SERIALIZE_SCALAR(txDmaState); + SERIALIZE_SCALAR(txKickTick); /* * Serialize rx state machine @@ -2454,8 +2478,7 @@ NSGigE::serialize(ostream &os) SERIALIZE_SCALAR(rxDescCnt); int rxDmaState = this->rxDmaState; SERIALIZE_SCALAR(rxDmaState); - - SERIALIZE_SCALAR(extstsEnable); + SERIALIZE_SCALAR(rxKickTick); /* * If there's a pending transmit, store the time so we can @@ -2575,6 +2598,7 @@ NSGigE::unserialize(Checkpoint *cp, const std::string §ion) UNSERIALIZE_SCALAR(rxDescCache.bufptr); UNSERIALIZE_SCALAR(rxDescCache.cmdsts); UNSERIALIZE_SCALAR(rxDescCache.extsts); + UNSERIALIZE_SCALAR(extstsEnable); /* * unserialize tx state machine @@ -2589,6 +2613,9 @@ NSGigE::unserialize(Checkpoint *cp, const std::string §ion) int txDmaState; UNSERIALIZE_SCALAR(txDmaState); this->txDmaState = (DmaState) txDmaState; + UNSERIALIZE_SCALAR(txKickTick); + if (txKickTick) + txKickEvent.schedule(txKickTick); /* * unserialize rx state machine @@ -2604,8 +2631,9 @@ NSGigE::unserialize(Checkpoint *cp, const std::string §ion) int rxDmaState; UNSERIALIZE_SCALAR(rxDmaState); this->rxDmaState = (DmaState) rxDmaState; - - UNSERIALIZE_SCALAR(extstsEnable); + UNSERIALIZE_SCALAR(rxKickTick); + if (rxKickTick) + rxKickEvent.schedule(rxKickTick); /* * If there's a pending transmit, reschedule it now |