Merge zeep.pool:/z/saidi/work/m5.head

into  zeep.pool:/z/saidi/work/m5.nm_m5_pull

SConscript:
    dram memory needs to be converted to newmem before we can use it
dev/ide_ctrl.cc:
    don't need this printing in newmem
dev/ide_disk.cc:
    will read stats in next commit
dev/sinic.cc:
    merge sinic from head, still needs work

--HG--
extra : convert_revision : b9aabd8c7814d07d54ce6f971aad3ec349fa24e1

9 files changed, 318 insertions, 100 deletions

diff --git a/arch/alpha/isa/decoder.isa b/arch/alpha/isa/decoder.isa
index 3d38e91f9..1adcfb948 100644
--- a/arch/alpha/isa/decoder.isa
+++ b/arch/alpha/isa/decoder.isa
@@ -810,7 +810,7 @@ decode OPCODE default Unknown::unknown() {
                 AlphaPseudo::addsymbol(xc->xcBase(), R16, R17);
             }}, IsNonSpeculative);
             0x54: m5panic({{
-                panic("M5 panic instruction called.");
+                panic("M5 panic instruction called at pc=%#x.", xc->readPC());
             }}, IsNonSpeculative);
 
         }
diff --git a/dev/ide_disk.hh b/dev/ide_disk.hh
index 3d67abece..891c462b5 100644
--- a/dev/ide_disk.hh
+++ b/dev/ide_disk.hh
@@ -33,6 +33,7 @@
 #ifndef __IDE_DISK_HH__
 #define __IDE_DISK_HH__
 
+#include "base/statistics.hh"
 #include "dev/disk_image.hh"
 #include "dev/ide_atareg.h"
 #include "dev/ide_ctrl.hh"
@@ -231,6 +232,13 @@ class IdeDisk : public SimObject
     /** Interrupt pending */
     bool intrPending;
 
+    Stats::Scalar<> dmaReadFullPages;
+    Stats::Scalar<> dmaReadBytes;
+    Stats::Scalar<> dmaReadTxs;
+    Stats::Scalar<> dmaWriteFullPages;
+    Stats::Scalar<> dmaWriteBytes;
+    Stats::Scalar<> dmaWriteTxs;
+
   public:
     /**
      * Create and initialize this Disk.
@@ -252,6 +260,12 @@ class IdeDisk : public SimObject
     void reset(int id);
 
     /**
+     * Register statistics.
+     */
+    void regStats();
+
+
+    /**
      * Set the controller for this device
      * @param c The IDE controller
      */
diff --git a/dev/sinic.cc b/dev/sinic.cc
index b5b6c6cf5..66ca88dbe 100644
--- a/dev/sinic.cc
+++ b/dev/sinic.cc
@@ -81,7 +81,8 @@ Base::Base(Params *p)
 }
 
 Device::Device(Params *p)
-    : Base(p), rxFifo(p->rx_fifo_size), txFifo(p->tx_fifo_size),
+    : Base(p), plat(p->plat), physmem(p->physmem), rxUnique(0), txUnique(0),
+      virtualRegs(p->virtual_count < 1 ? 1 : p->virtual_count),
       rxKickTick(0), txKickTick(0),
       txEvent(this), rxDmaEvent(this), txDmaEvent(this),
       dmaReadDelay(p->dma_read_delay), dmaReadFactor(p->dma_read_factor),
@@ -268,12 +269,9 @@ void
 Device::prepareIO(int cpu, int index)
 {
     int size = virtualRegs.size();
-    if (index < size)
-        return;
-
-    virtualRegs.resize(index + 1);
-    for (int i = size; i <= index; ++i)
-        virtualRegs[i].rxPacket = rxFifo.end();
+    if (index > size)
+        panic("Trying to access a vnic that doesn't exist %d > %d\n",
+              index, size);
 }
 
 void
@@ -286,7 +284,10 @@ Device::prepareRead(int cpu, int index)
 
     // update rx registers
     uint64_t rxdone = vnic.RxDone;
-    rxdone = set_RxDone_Packets(rxdone, rxFifo.packets());
+    rxdone = set_RxDone_Packets(rxdone, rxFifo.countPacketsAfter(rxFifoPtr));
+    rxdone = set_RxDone_Empty(rxdone, rxFifo.empty());
+    rxdone = set_RxDone_High(rxdone, rxFifo.size() > regs.RxFifoMark);
+    rxdone = set_RxDone_NotHigh(rxdone, rxLow);
     regs.RxData = vnic.RxData;
     regs.RxDone = rxdone;
     regs.RxWait = rxdone;
@@ -325,17 +326,18 @@ Device::read(Packet &pkt)
     pkt.allocate();
 
     if (!regValid(raddr))
-        panic("invalid register: cpu=%d, da=%#x pa=%#x size=%d",
-                cpu, daddr, pkt.addr, pkt.size);
+        panic("invalid register: cpu=%d vnic=%d da=%#x pa=%#x size=%d",
+              cpu, index, daddr, pkt.addr, pkt.size);
 
     const Regs::Info &info = regInfo(raddr);
     if (!info.read)
-        panic("reading %s (write only): cpu=%d da=%#x pa=%#x size=%d",
-                info.name, cpu, daddr, pkt.addr, pkt.size);
+        panic("read %s (write only): "
+              "cpu=%d vnic=%d da=%#x pa=%#x size=%d",
+              info.name, cpu, index, daddr, pkt.addr, pkt.size);
 
-    if (pkt.size != info.size)
-        panic("invalid size for reg %s: cpu=%d da=%#x pa=%#x size=%d",
-                info.name, cpu, daddr, pkt.addr, pkt.size);
+        panic("read %s (invalid size): "
+              "cpu=%d vnic=%d da=%#x pa=%#x size=%d",
+              info.name, cpu, index, daddr, pkt.addr, pkt.size);
 
     prepareRead(cpu, index);
 
@@ -353,8 +355,8 @@ Device::read(Packet &pkt)
     }
 
     DPRINTF(EthernetPIO,
-            "read %s cpu=%d da=%#x pa=%#x size=%d val=%#x\n",
-            info.name, cpu, daddr, pkt.addr, pkt.size, value);
+            "read %s: cpu=%d vnic=%d da=%#x pa=%#x size=%d val=%#x\n",
+            info.name, cpu, index, daddr, pkt.addr, pkt.size, value);
 
     // reading the interrupt status register has the side effect of
     // clearing it
@@ -416,18 +418,20 @@ Device::write(Packet &pkt)
 
     const Regs::Info &info = regInfo(raddr);
     if (!info.write)
-        panic("write %s (read only): cpu=%d da=%#x pa=%#x size=%d",
-                info.name, cpu, daddr, pkt.addr, pkt.size);
+        panic("write %s (read only): "
+              "cpu=%d vnic=%d da=%#x pa=%#x size=%d",
+              info.name, cpu, index, daddr, pkt.addr, pkt.size);
 
     if (pkt.size != info.size)
-        panic("invalid size for reg %s: cpu=%d da=%#x pa=%#x size=%d",
-                info.name, cpu, daddr, pkt.addr, pkt.size);
+        panic("write %s (invalid size): "
+              "cpu=%d vnic=%d da=%#x pa=%#x size=%d",
+              info.name, cpu, index, daddr, pkt.addr, pkt.size);
 
     VirtualReg &vnic = virtualRegs[index];
 
     DPRINTF(EthernetPIO,
-            "write %s: cpu=%d val=%#x da=%#x pa=%#x size=%d\n",
-            info.name, cpu, info.size == 4 ? pkt.get<uint32_t>() :
+            "write %s vnic %d: cpu=%d val=%#x da=%#x pa=%#x size=%d\n",
+            info.name, index, cpu, info.size == 4 ? pkt.get<uint32_t>() :
             pkt.get<uint64_t>(), daddr, pkt.addr, pkt.size);
 
     prepareWrite(cpu, index);
@@ -454,10 +458,32 @@ Device::write(Packet &pkt)
             panic("receive machine busy with another request! rxState=%s",
                   RxStateStrings[rxState]);
 
+        vnic.rxUnique = rxUnique++;
         vnic.RxDone = Regs::RxDone_Busy;
         vnic.RxData = pkt.get<uint64_t>();
-        rxList.push_back(index);
-        if (rxEnable && rxState == rxIdle) {
+
+        if (Regs::get_RxData_Vaddr(reg64)) {
+            Addr vaddr = Regs::get_RxData_Addr(reg64);
+            Addr paddr = vtophys(req->xc, vaddr);
+            DPRINTF(EthernetPIO, "write RxData vnic %d (rxunique %d): "
+                    "vaddr=%#x, paddr=%#x\n",
+                    index, vnic.rxUnique, vaddr, paddr);
+
+            vnic.RxData = Regs::set_RxData_Addr(vnic.RxData, paddr);
+        } else {
+            DPRINTF(EthernetPIO, "write RxData vnic %d (rxunique %d)\n",
+                    index, vnic.rxUnique);
+        }
+
+        if (vnic.rxPacket == rxFifo.end()) {
+            DPRINTF(EthernetPIO, "request new packet...appending to rxList\n");
+            rxList.push_back(index);
+        } else {
+            DPRINTF(EthernetPIO, "packet exists...appending to rxBusy\n");
+            rxBusy.push_back(index);
+        }
+
+        if (rxEnable && (rxState == rxIdle || rxState == rxFifoBlock)) {
             rxState = rxFifoBlock;
             rxKick();
         }
@@ -468,8 +494,23 @@ Device::write(Packet &pkt)
             panic("transmit machine busy with another request! txState=%s",
                   TxStateStrings[txState]);
 
+        vnic.txUnique = txUnique++;
         vnic.TxDone = Regs::TxDone_Busy;
-        vnic.TxData = pkt.get<uint64_t>();
+
+        if (Regs::get_TxData_Vaddr(pkt.get<uint64_t>())) {
+            panic("vtophys won't work here in newmem.\n");
+            /*Addr vaddr = Regs::get_TxData_Addr(reg64);
+            Addr paddr = vtophys(req->xc, vaddr);
+            DPRINTF(EthernetPIO, "write TxData vnic %d (rxunique %d): "
+                    "vaddr=%#x, paddr=%#x\n",
+                    index, vnic.txUnique, vaddr, paddr);
+
+            vnic.TxData = Regs::set_TxData_Addr(vnic.TxData, paddr);*/
+        } else {
+            DPRINTF(EthernetPIO, "write TxData vnic %d (rxunique %d)\n",
+                    index, vnic.txUnique);
+        }
+
         if (txList.empty() || txList.front() != index)
             txList.push_back(index);
         if (txEnable && txState == txIdle && txList.front() == index) {
@@ -695,10 +736,21 @@ Device::reset()
         regs.Config |= Config_TxThread;
     if (params()->rss)
         regs.Config |= Config_RSS;
+    if (params()->zero_copy)
+        regs.Config |= Config_ZeroCopy;
+    if (params()->delay_copy)
+        regs.Config |= Config_DelayCopy;
+    if (params()->virtual_addr)
+        regs.Config |= Config_Vaddr;
+
+    if (params()->delay_copy && params()->zero_copy)
+        panic("Can't delay copy and zero copy");
+
     regs.IntrMask = Intr_Soft | Intr_RxHigh | Intr_RxPacket | Intr_TxLow;
     regs.RxMaxCopy = params()->rx_max_copy;
     regs.TxMaxCopy = params()->tx_max_copy;
     regs.RxMaxIntr = params()->rx_max_intr;
+    regs.VirtualCount = params()->virtual_count;
     regs.RxFifoSize = params()->rx_fifo_size;
     regs.TxFifoSize = params()->tx_fifo_size;
     regs.RxFifoMark = params()->rx_fifo_threshold;
@@ -706,6 +758,8 @@ Device::reset()
     regs.HwAddr = params()->eaddr;
 
     rxList.clear();
+    rxBusy.clear();
+    rxActive = -1;
     txList.clear();
 
     rxState = rxIdle;
@@ -715,6 +769,7 @@ Device::reset()
     rxFifoPtr = rxFifo.end();
     txFifo.clear();
     rxEmpty = false;
+    rxLow = true;
     txFull = false;
 
     int size = virtualRegs.size();
@@ -729,7 +784,7 @@ Device::rxDmaDone()
 {
     assert(rxState == rxCopy);
     rxState = rxCopyDone;
-    DPRINTF(EthernetDMA, "rx dma write paddr=%#x len=%d\n",
+    DPRINTF(EthernetDMA, "end rx dma write paddr=%#x len=%d\n",
             rxDmaAddr, rxDmaLen);
     DDUMP(EthernetData, rxDmaData, rxDmaLen);
 
@@ -743,13 +798,13 @@ Device::rxDmaDone()
 void
 Device::rxKick()
 {
-    VirtualReg *vnic;
+    VirtualReg *vnic = NULL;
 
-    DPRINTF(EthernetSM, "receive kick rxState=%s (rxFifo.size=%d)\n",
+    DPRINTF(EthernetSM, "rxKick: rxState=%s (rxFifo.size=%d)\n",
             RxStateStrings[rxState], rxFifo.size());
 
     if (rxKickTick > curTick) {
-        DPRINTF(EthernetSM, "receive kick exiting, can't run till %d\n",
+        DPRINTF(EthernetSM, "rxKick: exiting, can't run till %d\n",
                 rxKickTick);
         return;
     }
@@ -758,16 +813,50 @@ Device::rxKick()
     if (rxState == rxIdle)
         goto exit;
 
-    assert(!rxList.empty());
-    vnic = &virtualRegs[rxList.front()];
+    if (rxActive == -1) {
+        if (rxState != rxFifoBlock)
+            panic("no active vnic while in state %s", RxStateStrings[rxState]);
 
-    DPRINTF(EthernetSM, "processing rxState=%s for virtual nic %d\n",
-            RxStateStrings[rxState], rxList.front());
+        DPRINTF(EthernetSM, "processing rxState=%s\n",
+                RxStateStrings[rxState]);
+    } else {
+        vnic = &virtualRegs[rxActive];
+        DPRINTF(EthernetSM,
+                "processing rxState=%s for vnic %d (rxunique %d)\n",
+                RxStateStrings[rxState], rxActive, vnic->rxUnique);
+    }
 
     switch (rxState) {
       case rxFifoBlock:
-        if (vnic->rxPacket != rxFifo.end()) {
+        if (DTRACE(EthernetSM)) {
+            PacketFifo::iterator end = rxFifo.end();
+            int size = virtualRegs.size();
+            for (int i = 0; i < size; ++i) {
+                VirtualReg *vn = &virtualRegs[i];
+                if (vn->rxPacket != end &&
+                    !Regs::get_RxDone_Busy(vn->RxDone)) {
+                    DPRINTF(EthernetSM,
+                            "vnic %d (rxunique %d), has outstanding packet %d\n",
+                            i, vn->rxUnique,
+                            rxFifo.countPacketsBefore(vn->rxPacket));
+                }
+            }
+        }
+
+        if (!rxBusy.empty()) {
+            rxActive = rxBusy.front();
+            rxBusy.pop_front();
+            vnic = &virtualRegs[rxActive];
+
+            if (vnic->rxPacket == rxFifo.end())
+                panic("continuing vnic without packet\n");
+
+            DPRINTF(EthernetSM,
+                    "continue processing for vnic %d (rxunique %d)\n",
+                    rxActive, vnic->rxUnique);
+
             rxState = rxBeginCopy;
+
             break;
         }
 
@@ -776,8 +865,19 @@ Device::rxKick()
             goto exit;
         }
 
+        if (rxList.empty())
+            panic("Not idle, but nothing to do!");
+
         assert(!rxFifo.empty());
 
+        rxActive = rxList.front();
+        rxList.pop_front();
+        vnic = &virtualRegs[rxActive];
+
+        DPRINTF(EthernetSM,
+                "processing new packet for vnic %d (rxunique %d)\n",
+                rxActive, vnic->rxUnique);
+
         // Grab a new packet from the fifo.
         vnic->rxPacket = rxFifoPtr++;
         vnic->rxPacketOffset = 0;
@@ -788,6 +888,7 @@ Device::rxKick()
         /* scope for variables */ {
             IpPtr ip(*vnic->rxPacket);
             if (ip) {
+                DPRINTF(Ethernet, "ID is %d\n", ip->id());
                 vnic->rxDoneData |= Regs::RxDone_IpPacket;
                 rxIpChecksums++;
                 if (cksum(ip) != 0) {
@@ -797,6 +898,10 @@ Device::rxKick()
                 TcpPtr tcp(ip);
                 UdpPtr udp(ip);
                 if (tcp) {
+                    DPRINTF(Ethernet,
+                            "Src Port=%d, Dest Port=%d, Seq=%d, Ack=%d\n",
+                            tcp->sport(), tcp->dport(), tcp->seq(),
+                            tcp->ack());
                     vnic->rxDoneData |= Regs::RxDone_TcpPacket;
                     rxTcpChecksums++;
                     if (cksum(tcp) != 0) {
@@ -826,6 +931,11 @@ Device::rxKick()
                             vnic->rxPacketBytes);
         rxDmaData = (*vnic->rxPacket)->data + vnic->rxPacketOffset;
         rxState = rxCopy;
+        if (rxDmaAddr == 1LL) {
+            rxState = rxCopyDone;
+            break;
+        }
+
 
         dmaWrite(rxDmaAddr, rxDmaLen, &rxDmaEvent, rxDmaData);
         break;
@@ -835,31 +945,44 @@ Device::rxKick()
         goto exit;
 
       case rxCopyDone:
-        vnic->RxDone = vnic->rxDoneData | rxDmaLen;
+        vnic->RxDone = vnic->rxDoneData;
         vnic->RxDone |= Regs::RxDone_Complete;
 
         if (vnic->rxPacketBytes == rxDmaLen) {
-            DPRINTF(EthernetSM, "rxKick: packet complete on vnic %d\n",
-                    rxList.front());
+            // Packet is complete.  Indicate how many bytes were copied
+            vnic->RxDone = Regs::set_RxDone_CopyLen(vnic->RxDone, rxDmaLen);
+
+            DPRINTF(EthernetSM,
+                    "rxKick: packet complete on vnic %d (rxunique %d)\n",
+                    rxActive, vnic->rxUnique);
             rxFifo.remove(vnic->rxPacket);
             vnic->rxPacket = rxFifo.end();
         } else {
-            vnic->RxDone |= Regs::RxDone_More;
             vnic->rxPacketBytes -= rxDmaLen;
             vnic->rxPacketOffset += rxDmaLen;
+            vnic->RxDone |= Regs::RxDone_More;
+            vnic->RxDone = Regs::set_RxDone_CopyLen(vnic->RxDone,
+                                                    vnic->rxPacketBytes);
             DPRINTF(EthernetSM,
-                    "rxKick: packet not complete on vnic %d: %d bytes left\n",
-                    rxList.front(), vnic->rxPacketBytes);
+                    "rxKick: packet not complete on vnic %d (rxunique %d): "
+                    "%d bytes left\n",
+                    rxActive, vnic->rxUnique, vnic->rxPacketBytes);
         }
 
-        rxList.pop_front();
-        rxState = rxList.empty() ? rxIdle : rxFifoBlock;
+        rxActive = -1;
+        rxState = rxBusy.empty() && rxList.empty() ? rxIdle : rxFifoBlock;
 
         if (rxFifo.empty()) {
             devIntrPost(Regs::Intr_RxEmpty);
             rxEmpty = true;
         }
 
+        if (rxFifo.size() < params()->rx_fifo_low_mark)
+            rxLow = true;
+
+        if (rxFifo.size() > params()->rx_fifo_threshold)
+            rxLow = false;
+
         devIntrPost(Regs::Intr_RxDMA);
         break;
 
@@ -920,8 +1043,10 @@ Device::transmit()
             DPRINTF(Ethernet, "ID is %d\n", ip->id());
             TcpPtr tcp(ip);
             if (tcp) {
-                DPRINTF(Ethernet, "Src Port=%d, Dest Port=%d\n",
-                        tcp->sport(), tcp->dport());
+                DPRINTF(Ethernet,
+                        "Src Port=%d, Dest Port=%d, Seq=%d, Ack=%d\n",
+                        tcp->sport(), tcp->dport(), tcp->seq(),
+                        tcp->ack());
             }
         }
     }
@@ -950,11 +1075,11 @@ void
 Device::txKick()
 {
     VirtualReg *vnic;
-    DPRINTF(EthernetSM, "transmit kick txState=%s (txFifo.size=%d)\n",
+    DPRINTF(EthernetSM, "txKick: txState=%s (txFifo.size=%d)\n",
             TxStateStrings[txState], txFifo.size());
 
     if (txKickTick > curTick) {
-        DPRINTF(EthernetSM, "transmit kick exiting, can't run till %d\n",
+        DPRINTF(EthernetSM, "txKick: exiting, can't run till %d\n",
                 txKickTick);
         return;
     }
@@ -968,7 +1093,7 @@ Device::txKick()
 
     switch (txState) {
       case txFifoBlock:
-        assert(Regs::get_TxDone_Busy(vnic->TxData));
+        assert(Regs::get_TxDone_Busy(vnic->TxDone));
         if (!txPacket) {
             // Grab a new packet from the fifo.
             txPacket = new EthPacketData(16384);
@@ -1213,6 +1338,8 @@ Base::unserialize(Checkpoint *cp, const std::string &section)
 void
 Device::serialize(std::ostream &os)
 {
+    int count;
+
     // Serialize the PciDev base class
     Base::serialize(os);
 
@@ -1233,6 +1360,7 @@ Device::serialize(std::ostream &os)
     SERIALIZE_SCALAR(regs.RxMaxCopy);
     SERIALIZE_SCALAR(regs.TxMaxCopy);
     SERIALIZE_SCALAR(regs.RxMaxIntr);
+    SERIALIZE_SCALAR(regs.VirtualCount);
     SERIALIZE_SCALAR(regs.RxData);
     SERIALIZE_SCALAR(regs.RxDone);
     SERIALIZE_SCALAR(regs.TxData);
@@ -1252,8 +1380,6 @@ Device::serialize(std::ostream &os)
         paramOut(os, reg + ".TxData", vnic->TxData);
         paramOut(os, reg + ".TxDone", vnic->TxDone);
 
-        PacketFifo::iterator rxFifoPtr;
-
         bool rxPacketExists = vnic->rxPacket != rxFifo.end();
         paramOut(os, reg + ".rxPacketExists", rxPacketExists);
         if (rxPacketExists) {
@@ -1272,18 +1398,26 @@ Device::serialize(std::ostream &os)
         paramOut(os, reg + ".rxDoneData", vnic->rxDoneData);
     }
 
-    VirtualList::iterator i, end;
-    int count;
+    int rxFifoPtr = rxFifo.countPacketsBefore(this->rxFifoPtr);
+    SERIALIZE_SCALAR(rxFifoPtr);
 
-    int rxListSize = rxList.size();
-    SERIALIZE_SCALAR(rxListSize);
+    SERIALIZE_SCALAR(rxActive);
+
+    VirtualList::iterator i, end;
     for (count = 0, i = rxList.begin(), end = rxList.end(); i != end; ++i)
         paramOut(os, csprintf("rxList%d", count++), *i);
+    int rxListSize = count;
+    SERIALIZE_SCALAR(rxListSize);
+
+    for (count = 0, i = rxBusy.begin(), end = rxBusy.end(); i != end; ++i)
+        paramOut(os, csprintf("rxBusy%d", count++), *i);
+    int rxBusySize = count;
+    SERIALIZE_SCALAR(rxBusySize);
 
-    int txListSize = txList.size();
-    SERIALIZE_SCALAR(txListSize);
     for (count = 0, i = txList.begin(), end = txList.end(); i != end; ++i)
         paramOut(os, csprintf("txList%d", count++), *i);
+    int txListSize = count;
+    SERIALIZE_SCALAR(txListSize);
 
     /*
      * Serialize rx state machine
@@ -1291,6 +1425,7 @@ Device::serialize(std::ostream &os)
     int rxState = this->rxState;
     SERIALIZE_SCALAR(rxState);
     SERIALIZE_SCALAR(rxEmpty);
+    SERIALIZE_SCALAR(rxLow);
     rxFifo.serialize("rxFifo", os);
 
     /*
@@ -1331,11 +1466,14 @@ Device::unserialize(Checkpoint *cp, const std::string &section)
     UNSERIALIZE_SCALAR(regs.RxMaxCopy);
     UNSERIALIZE_SCALAR(regs.TxMaxCopy);
     UNSERIALIZE_SCALAR(regs.RxMaxIntr);
+    UNSERIALIZE_SCALAR(regs.VirtualCount);
     UNSERIALIZE_SCALAR(regs.RxData);
     UNSERIALIZE_SCALAR(regs.RxDone);
     UNSERIALIZE_SCALAR(regs.TxData);
     UNSERIALIZE_SCALAR(regs.TxDone);
 
+    UNSERIALIZE_SCALAR(rxActive);
+
     int rxListSize;
     UNSERIALIZE_SCALAR(rxListSize);
     rxList.clear();
@@ -1345,6 +1483,15 @@ Device::unserialize(Checkpoint *cp, const std::string &section)
         rxList.push_back(value);
     }
 
+    int rxBusySize;
+    UNSERIALIZE_SCALAR(rxBusySize);
+    rxBusy.clear();
+    for (int i = 0; i < rxBusySize; ++i) {
+        int value;
+        paramIn(cp, section, csprintf("rxBusy%d", i), value);
+        rxBusy.push_back(value);
+    }
+
     int txListSize;
     UNSERIALIZE_SCALAR(txListSize);
     txList.clear();
@@ -1360,9 +1507,16 @@ Device::unserialize(Checkpoint *cp, const std::string &section)
     int rxState;
     UNSERIALIZE_SCALAR(rxState);
     UNSERIALIZE_SCALAR(rxEmpty);
+    UNSERIALIZE_SCALAR(rxLow);
     this->rxState = (RxState) rxState;
     rxFifo.unserialize("rxFifo", cp, section);
 
+    int rxFifoPtr;
+    UNSERIALIZE_SCALAR(rxFifoPtr);
+    this->rxFifoPtr = rxFifo.begin();
+    for (int i = 0; i < rxFifoPtr; ++i)
+        ++this->rxFifoPtr;
+
     /*
      * Unserialize tx state machine
      */
@@ -1400,6 +1554,9 @@ Device::unserialize(Checkpoint *cp, const std::string &section)
         paramIn(cp, section, reg + ".TxData", vnic->TxData);
         paramIn(cp, section, reg + ".TxDone", vnic->TxDone);
 
+        vnic->rxUnique = rxUnique++;
+        vnic->txUnique = txUnique++;
+
         bool rxPacketExists;
         paramIn(cp, section, reg + ".rxPacketExists", rxPacketExists);
         if (rxPacketExists) {
@@ -1488,6 +1645,8 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(Device)
     Param<uint32_t> rx_fifo_size;
     Param<uint32_t> tx_fifo_size;
     Param<uint32_t> rx_fifo_threshold;
+    Param<uint32_t> rx_fifo_low_mark;
+    Param<uint32_t> tx_fifo_high_mark;
     Param<uint32_t> tx_fifo_threshold;
 
     Param<bool> rx_filter;
@@ -1495,6 +1654,10 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(Device)
     Param<bool> rx_thread;
     Param<bool> tx_thread;
     Param<bool> rss;
+    Param<uint32_t> virtual_count;
+    Param<bool> zero_copy;
+    Param<bool> delay_copy;
+    Param<bool> virtual_addr;
 
 END_DECLARE_SIM_OBJECT_PARAMS(Device)
 
@@ -1525,13 +1688,19 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(Device)
     INIT_PARAM(rx_fifo_size, "max size in bytes of rxFifo"),
     INIT_PARAM(tx_fifo_size, "max size in bytes of txFifo"),
     INIT_PARAM(rx_fifo_threshold, "max size in bytes of rxFifo"),
+    INIT_PARAM(rx_fifo_low_mark, "max size in bytes of rxFifo"),
+    INIT_PARAM(tx_fifo_high_mark, "max size in bytes of txFifo"),
     INIT_PARAM(tx_fifo_threshold, "max size in bytes of txFifo"),
 
     INIT_PARAM(rx_filter, "Enable Receive Filter"),
     INIT_PARAM(hardware_address, "Ethernet Hardware Address"),
     INIT_PARAM(rx_thread, ""),
     INIT_PARAM(tx_thread, ""),
-    INIT_PARAM(rss, "")
+    INIT_PARAM(rss, ""),
+    INIT_PARAM(virtual_count, ""),
+    INIT_PARAM(zero_copy, ""),
+    INIT_PARAM(delay_copy, ""),
+    INIT_PARAM(virtual_addr, "")
 
 END_INIT_SIM_OBJECT_PARAMS(Device)
 
@@ -1564,6 +1733,8 @@ CREATE_SIM_OBJECT(Device)
     params->rx_fifo_size = rx_fifo_size;
     params->tx_fifo_size = tx_fifo_size;
     params->rx_fifo_threshold = rx_fifo_threshold;
+    params->rx_fifo_low_mark = rx_fifo_low_mark;
+    params->tx_fifo_high_mark = tx_fifo_high_mark;
     params->tx_fifo_threshold = tx_fifo_threshold;
 
     params->rx_filter = rx_filter;
@@ -1571,6 +1742,10 @@ CREATE_SIM_OBJECT(Device)
     params->rx_thread = rx_thread;
     params->tx_thread = tx_thread;
     params->rss = rss;
+    params->virtual_count = virtual_count;
+    params->zero_copy = zero_copy;
+    params->delay_copy = delay_copy;
+    params->virtual_addr = virtual_addr;
 
     return new Device(params);
 }
diff --git a/dev/sinic.hh b/dev/sinic.hh
index 63a8585dc..a786c3e44 100644
--- a/dev/sinic.hh
+++ b/dev/sinic.hh
@@ -117,7 +117,7 @@ class Device : public Base
         uint32_t RxMaxCopy;    // 0x10
         uint32_t TxMaxCopy;    // 0x14
         uint32_t RxMaxIntr;    // 0x18
-        uint32_t Reserved0;    // 0x1c
+        uint32_t VirtualCount; // 0x1c
         uint32_t RxFifoSize;   // 0x20
         uint32_t TxFifoSize;   // 0x24
         uint32_t RxFifoMark;   // 0x28
@@ -142,6 +142,9 @@ class Device : public Base
         int rxPacketBytes;
         uint64_t rxDoneData;
 
+        Counter rxUnique;
+        Counter txUnique;
+
         VirtualReg()
             : RxData(0), RxDone(0), TxData(0), TxDone(0),
               rxPacketOffset(0), rxPacketBytes(0), rxDoneData(0)
@@ -149,8 +152,12 @@ class Device : public Base
     };
     typedef std::vector<VirtualReg> VirtualRegs;
     typedef std::list<int> VirtualList;
+    Counter rxUnique;
+    Counter txUnique;
     VirtualRegs virtualRegs;
     VirtualList rxList;
+    VirtualList rxBusy;
+    int rxActive;
     VirtualList txList;
 
     uint8_t  &regData8(Addr daddr) { return *((uint8_t *)&regs + daddr); }
@@ -162,6 +169,7 @@ class Device : public Base
     PacketFifo rxFifo;
     PacketFifo::iterator rxFifoPtr;
     bool rxEmpty;
+    bool rxLow;
     Addr rxDmaAddr;
     uint8_t *rxDmaData;
     int rxDmaLen;
@@ -318,6 +326,8 @@ class Device : public Base
         uint32_t rx_fifo_size;
         uint32_t tx_fifo_size;
         uint32_t rx_fifo_threshold;
+        uint32_t rx_fifo_low_mark;
+        uint32_t tx_fifo_high_mark;
         uint32_t tx_fifo_threshold;
         Tick dma_read_delay;
         Tick dma_read_factor;
@@ -326,6 +336,10 @@ class Device : public Base
         bool rx_thread;
         bool tx_thread;
         bool rss;
+        uint32_t virtual_count;
+        bool zero_copy;
+        bool delay_copy;
+        bool virtual_addr;
     };
 
   protected:
diff --git a/dev/sinicreg.hh b/dev/sinicreg.hh
index f90432398..d41eb5b16 100644
--- a/dev/sinicreg.hh
+++ b/dev/sinicreg.hh
@@ -55,38 +55,40 @@
 namespace Sinic {
 namespace Regs {
 
-static const int VirtualMask = 0xff;
 static const int VirtualShift = 8;
+static const int VirtualMask = 0xff;
 
 // Registers
-__SINIC_REG32(Config,      0x00); // 32: configuration register
-__SINIC_REG32(Command,     0x04); // 32: command register
-__SINIC_REG32(IntrStatus,  0x08); // 32: interrupt status
-__SINIC_REG32(IntrMask,    0x0c); // 32: interrupt mask
-__SINIC_REG32(RxMaxCopy,   0x10); // 32: max bytes per rx copy
-__SINIC_REG32(TxMaxCopy,   0x14); // 32: max bytes per tx copy
-__SINIC_REG32(RxMaxIntr,   0x18); // 32: max receives per interrupt
-__SINIC_REG32(Reserved0,   0x1c); // 32: reserved
-__SINIC_REG32(RxFifoSize,  0x20); // 32: rx fifo capacity in bytes
-__SINIC_REG32(TxFifoSize,  0x24); // 32: tx fifo capacity in bytes
-__SINIC_REG32(RxFifoMark,  0x28); // 32: rx fifo high watermark
-__SINIC_REG32(TxFifoMark,  0x2c); // 32: tx fifo low watermark
-__SINIC_REG32(RxData,      0x30); // 64: receive data
-__SINIC_REG32(RxDone,      0x38); // 64: receive done
-__SINIC_REG32(RxWait,      0x40); // 64: receive done (busy wait)
-__SINIC_REG32(TxData,      0x48); // 64: transmit data
-__SINIC_REG32(TxDone,      0x50); // 64: transmit done
-__SINIC_REG32(TxWait,      0x58); // 64: transmit done (busy wait)
-__SINIC_REG32(HwAddr,      0x60); // 64: mac address
-__SINIC_REG32(Size,        0x68); // register addres space size
+__SINIC_REG32(Config,        0x00); // 32: configuration register
+__SINIC_REG32(Command,       0x04); // 32: command register
+__SINIC_REG32(IntrStatus,    0x08); // 32: interrupt status
+__SINIC_REG32(IntrMask,      0x0c); // 32: interrupt mask
+__SINIC_REG32(RxMaxCopy,     0x10); // 32: max bytes per rx copy
+__SINIC_REG32(TxMaxCopy,     0x14); // 32: max bytes per tx copy
+__SINIC_REG32(RxMaxIntr,     0x18); // 32: max receives per interrupt
+__SINIC_REG32(VirtualCount,  0x1c); // 32: number of virutal NICs
+__SINIC_REG32(RxFifoSize,    0x20); // 32: rx fifo capacity in bytes
+__SINIC_REG32(TxFifoSize,    0x24); // 32: tx fifo capacity in bytes
+__SINIC_REG32(RxFifoMark,    0x28); // 32: rx fifo high watermark
+__SINIC_REG32(TxFifoMark,    0x2c); // 32: tx fifo low watermark
+__SINIC_REG32(RxData,        0x30); // 64: receive data
+__SINIC_REG32(RxDone,        0x38); // 64: receive done
+__SINIC_REG32(RxWait,        0x40); // 64: receive done (busy wait)
+__SINIC_REG32(TxData,        0x48); // 64: transmit data
+__SINIC_REG32(TxDone,        0x50); // 64: transmit done
+__SINIC_REG32(TxWait,        0x58); // 64: transmit done (busy wait)
+__SINIC_REG32(HwAddr,        0x60); // 64: mac address
+__SINIC_REG32(Size,          0x68); // register addres space size
 
 // Config register bits
+__SINIC_VAL32(Config_ZeroCopy, 12, 1); // enable zero copy
+__SINIC_VAL32(Config_DelayCopy,11, 1); // enable delayed copy
 __SINIC_VAL32(Config_RSS,      10, 1); // enable receive side scaling
 __SINIC_VAL32(Config_RxThread,  9, 1); // enable receive threads
 __SINIC_VAL32(Config_TxThread,  8, 1); // enable transmit thread
 __SINIC_VAL32(Config_Filter,    7, 1); // enable receive filter
 __SINIC_VAL32(Config_Vlan,      6, 1); // enable vlan tagging
-__SINIC_VAL32(Config_Virtual,   5, 1); // enable virtual addressing
+__SINIC_VAL32(Config_Vaddr,     5, 1); // enable virtual addressing
 __SINIC_VAL32(Config_Desc,      4, 1); // enable tx/rx descriptors
 __SINIC_VAL32(Config_Poll,      3, 1); // enable polling
 __SINIC_VAL32(Config_IntEn,     2, 1); // enable interrupts
@@ -112,13 +114,15 @@ __SINIC_REG32(Intr_NoDelay,   0x01cc); // interrupts that aren't coalesced
 __SINIC_REG32(Intr_Res,      ~0x01ff); // reserved interrupt bits
 
 // RX Data Description
-__SINIC_VAL64(RxData_Len, 40, 20); // 0 - 1M
-__SINIC_VAL64(RxData_Addr, 0, 40); // Address 1TB
+__SINIC_VAL64(RxData_Vaddr, 60,  1); // Addr is virtual
+__SINIC_VAL64(RxData_Len,   40, 20); // 0 - 256k
+__SINIC_VAL64(RxData_Addr,   0, 40); // Address 1TB
 
 // TX Data Description
 __SINIC_VAL64(TxData_More,     63,  1); // Packet not complete (will dma more)
 __SINIC_VAL64(TxData_Checksum, 62,  1); // do checksum
-__SINIC_VAL64(TxData_Len,      40, 20); // 0 - 1M
+__SINIC_VAL64(TxData_Vaddr,    60,  1); // Addr is virtual
+__SINIC_VAL64(TxData_Len,      40, 20); // 0 - 256k
 __SINIC_VAL64(TxData_Addr,      0, 40); // Address 1TB
 
 // RX Done/Busy Information
@@ -126,9 +130,9 @@ __SINIC_VAL64(RxDone_Packets,   32, 16); // number of packets in rx fifo
 __SINIC_VAL64(RxDone_Busy,      31,  1); // receive dma busy copying
 __SINIC_VAL64(RxDone_Complete,  30,  1); // valid data (packet complete)
 __SINIC_VAL64(RxDone_More,      29,  1); // Packet has more data (dma again)
-__SINIC_VAL64(RxDone_Res0,      28,  1); // reserved
-__SINIC_VAL64(RxDone_Res1,      27,  1); // reserved
-__SINIC_VAL64(RxDone_Res2,      26,  1); // reserved
+__SINIC_VAL64(RxDone_Empty,     28,  1); // rx fifo is empty
+__SINIC_VAL64(RxDone_High,      27,  1); // rx fifo is above the watermark
+__SINIC_VAL64(RxDone_NotHigh,   26,  1); // rxfifo never hit the high watermark
 __SINIC_VAL64(RxDone_TcpError,  25,  1); // TCP packet error (bad checksum)
 __SINIC_VAL64(RxDone_UdpError,  24,  1); // UDP packet error (bad checksum)
 __SINIC_VAL64(RxDone_IpError,   23,  1); // IP packet error (bad checksum)
@@ -175,7 +179,7 @@ regInfo(Addr daddr)
         { 4, true,  false, "RxMaxCopy"  },
         { 4, true,  false, "TxMaxCopy"  },
         { 4, true,  false, "RxMaxIntr"  },
-        invalid,
+        { 4, true,  false, "VirtualCount"  },
         { 4, true,  false, "RxFifoSize" },
         { 4, true,  false, "TxFifoSize" },
         { 4, true,  false, "RxFifoMark" },
diff --git a/python/m5/objects/Ethernet.py b/python/m5/objects/Ethernet.py
index 0667fc6d7..4286c71c8 100644
--- a/python/m5/objects/Ethernet.py
+++ b/python/m5/objects/Ethernet.py
@@ -101,8 +101,14 @@ class Sinic(EtherDevBase):
     rx_max_copy = Param.MemorySize('1514B', "rx max copy")
     tx_max_copy = Param.MemorySize('16kB', "tx max copy")
     rx_max_intr = Param.UInt32(10, "max rx packets per interrupt")
-    rx_fifo_threshold = Param.MemorySize('48kB', "rx fifo high threshold")
-    tx_fifo_threshold = Param.MemorySize('16kB', "tx fifo low threshold")
+    rx_fifo_threshold = Param.MemorySize('384kB', "rx fifo high threshold")
+    rx_fifo_low_mark = Param.MemorySize('128kB', "rx fifo low threshold")
+    tx_fifo_high_mark = Param.MemorySize('384kB', "tx fifo high threshold")
+    tx_fifo_threshold = Param.MemorySize('128kB', "tx fifo low threshold")
+    virtual_count = Param.UInt32(1, "Virtualized SINIC")
+    zero_copy = Param.Bool(False, "Zero copy receive")
+    delay_copy = Param.Bool(False, "Delayed copy transmit")
+    virtual_addr = Param.Bool(False, "Virtual addressing")
 
 class SinicInt(EtherInt):
     type = 'SinicInt'
diff --git a/sim/serialize.cc b/sim/serialize.cc
index ec7241498..c4ef124bb 100644
--- a/sim/serialize.cc
+++ b/sim/serialize.cc
@@ -51,8 +51,9 @@
 
 using namespace std;
 
-int Serializable::maxCount = 0;
-int Serializable::count = 0;
+int Serializable::ckptMaxCount = 0;
+int Serializable::ckptCount = 0;
+int Serializable::ckptPrevCount = -1;
 
 void
 Serializable::nameOut(ostream &os)
@@ -241,8 +242,11 @@ Serializable::serializeAll()
     globals.serialize(outstream);
     SimObject::serializeAll(outstream);
 
-    if (maxCount && ++count >= maxCount)
+    assert(Serializable::ckptPrevCount + 1 == Serializable::ckptCount);
+    Serializable::ckptPrevCount++;
+    if (ckptMaxCount && ++ckptCount >= ckptMaxCount)
         SimExit(curTick + 1, "Maximum number of checkpoints dropped");
+
 }
 
 
@@ -352,7 +356,7 @@ SerializeParamContext::checkParams()
     if (serialize_cycle > 0)
         Checkpoint::setup(serialize_cycle, serialize_period);
 
-    Serializable::maxCount = serialize_count;
+    Serializable::ckptMaxCount = serialize_count;
 }
 
 void
diff --git a/sim/serialize.hh b/sim/serialize.hh
index bc82bf9b8..d8f5f8fc5 100644
--- a/sim/serialize.hh
+++ b/sim/serialize.hh
@@ -119,8 +119,9 @@ class Serializable
     static Serializable *create(Checkpoint *cp,
                                  const std::string &section);
 
-    static int count;
-    static int maxCount;
+    static int ckptCount;
+    static int ckptMaxCount;
+    static int ckptPrevCount;
     static void serializeAll();
     static void unserializeGlobals(Checkpoint *cp);
 };
diff --git a/util/stats/barchart.py b/util/stats/barchart.py
index 5d6dd0ab1..a477d1f3b 100644
--- a/util/stats/barchart.py
+++ b/util/stats/barchart.py
@@ -233,7 +233,7 @@ class BarChart(ChartOptions):
             inner_axes.set_yticks(ticks)
             inner_axes.set_yticklabels(self.yticks)
         elif self.ylim is not None:
-            self.inner_axes.set_ylim(self.ylim)
+            inner_axes.set_ylim(self.ylim)
 
         if self.xticks is not None:
             outer_axes.set_xticks(arange(cshape[2]) + .5)
@@ -242,9 +242,9 @@ class BarChart(ChartOptions):
         if self.xsubticks is not None:
             numticks = (cshape[0] + 1) * cshape[2]
             inner_axes.set_xticks(arange(numticks) * width + 2 * center)
-            self.xsubticks.append('')
-            inner_axes.set_xticklabels(self.xsubticks * cshape[2], fontsize=7,
-                                       rotation=90)
+            xsubticks = list(self.xsubticks) + [ '' ]
+            inner_axes.set_xticklabels(xsubticks * cshape[2], fontsize=7,
+                                       rotation=30)
 
         if self.legend is not None:
             if dim == 1: