Merge zizzer:/bk/newmem

into  zeep.eecs.umich.edu:/z/saidi/work/m5.newmem

--HG--
extra : convert_revision : 36da0febc30675e955a10eb8bc45586b6242a8c3

14 files changed, 714 insertions, 847 deletions

diff --git a/SConscript b/SConscript
index 5244ad1e6..3693435b6 100644
--- a/SConscript
+++ b/SConscript
@@ -184,11 +184,19 @@ full_system_sources = Split('''
         cpu/profile.cc
 
 	dev/alpha_console.cc
+	dev/baddev.cc
 	dev/disk_image.cc
 	dev/io_device.cc
+	dev/isa_fake.cc
 	dev/platform.cc
         dev/simconsole.cc
 	dev/simple_disk.cc
+	dev/tsunami.cc
+	dev/tsunami_cchip.cc
+	dev/tsunami_io.cc
+	dev/tsunami_fake.cc
+	dev/tsunami_pchip.cc
+
 	dev/uart.cc
 	dev/uart8250.cc
 
@@ -204,7 +212,6 @@ full_system_sources = Split('''
 	sim/pseudo_inst.cc
         ''')
 
-#	dev/baddev.cc
 #	dev/etherbus.cc
 #	dev/etherdump.cc
 #	dev/etherint.cc
@@ -219,11 +226,6 @@ full_system_sources = Split('''
 #	dev/pcifake.cc
 #	dev/pktfifo.cc
 #	dev/sinic.cc
-#	dev/tsunami.cc
-#	dev/tsunami_cchip.cc
-#	dev/isa_fake.cc
-#	dev/tsunami_io.cc
-#	dev/tsunami_pchip.cc
 
 if env['TARGET_ISA'] == 'alpha':
     full_system_sources += Split('''
diff --git a/dev/alpha_console.cc b/dev/alpha_console.cc
index 88219fcbc..f68f132c8 100644
--- a/dev/alpha_console.cc
+++ b/dev/alpha_console.cc
@@ -87,15 +87,6 @@ AlphaConsole::startup()
     alphaAccess->intrClockFrequency = params()->platform->intrFrequency();
 }
 
-void
-AlphaConsole::addressRanges(AddrRangeList &range_list)
-{
-    assert(pioSize != 0);
-    range_list.clear();
-    range_list.push_back(RangeSize(pioAddr, sizeof(struct AlphaAccess)));
-}
-
-
 Tick
 AlphaConsole::read(Packet &pkt)
 {
@@ -325,7 +316,7 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(AlphaConsole)
 
     SimObjectParam<SimConsole *> sim_console;
     SimObjectParam<SimpleDisk *> disk;
-    Param<Addr> addr;
+    Param<Addr> pio_addr;
     SimObjectParam<AlphaSystem *> system;
     SimObjectParam<BaseCPU *> cpu;
     SimObjectParam<Platform *> platform;
@@ -337,7 +328,7 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(AlphaConsole)
 
     INIT_PARAM(sim_console, "The Simulator Console"),
     INIT_PARAM(disk, "Simple Disk"),
-    INIT_PARAM(addr, "Device Address"),
+    INIT_PARAM(pio_addr, "Device Address"),
     INIT_PARAM(system, "system object"),
     INIT_PARAM(cpu, "Processor"),
     INIT_PARAM(platform, "platform"),
@@ -350,7 +341,7 @@ CREATE_SIM_OBJECT(AlphaConsole)
     AlphaConsole::Params *p = new AlphaConsole::Params;
     p->name = getInstanceName();
     p->platform = platform;
-    p->pio_addr = addr;
+    p->pio_addr = pio_addr;
     p->pio_delay = pio_latency;
     p->cons = sim_console;
     p->disk = disk;
diff --git a/dev/alpha_console.hh b/dev/alpha_console.hh
index 0435feb89..05aec5ec1 100644
--- a/dev/alpha_console.hh
+++ b/dev/alpha_console.hh
@@ -119,9 +119,6 @@ class AlphaConsole : public BasicPioDevice
     virtual Tick read(Packet &pkt);
     virtual Tick write(Packet &pkt);
 
-    /** Address ranges this device is sensitive to. */
-    virtual void addressRanges(AddrRangeList &range_list);
-
     /**
      * standard serialization routines for checkpointing
      */
diff --git a/dev/baddev.cc b/dev/baddev.cc
index 87d683a5d..f15c1d953 100644
--- a/dev/baddev.cc
+++ b/dev/baddev.cc
@@ -48,69 +48,54 @@
 using namespace std;
 using namespace TheISA;
 
-BadDevice::BadDevice(const string &name, Addr a, MemoryController *mmu,
-                     HierParams *hier, Bus *pio_bus, const string &devicename)
-    : PioDevice(name, NULL), addr(a), devname(devicename)
+BadDevice::BadDevice(Params *p)
+    : BasicPioDevice(p), devname(p->devic_ename)
 {
-    mmu->add_child(this, RangeSize(addr, size));
-
-    if (pio_bus) {
-        pioInterface = newPioInterface(name, hier, pio_bus, this,
-                                      &BadDevice::cacheAccess);
-        pioInterface->addAddrRange(RangeSize(addr, size));
-    }
-
+    pioSize = 0xf;
 }
 
-Fault
-BadDevice::read(MemReqPtr &req, uint8_t *data)
-{
-
-    panic("Device %s not imlpmented\n", devname);
-    return NoFault;
-}
-
-Fault
-BadDevice::write(MemReqPtr &req, const uint8_t *data)
+Tick
+BadDevice::read(Packet &pkt)
 {
     panic("Device %s not imlpmented\n", devname);
-    return NoFault;
 }
 
 Tick
-BadDevice::cacheAccess(MemReqPtr &req)
+BadDevice::write(Packet &pkt)
 {
-    return curTick;
+    panic("Device %s not imlpmented\n", devname);
 }
 
 BEGIN_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
 
+    Param<string> devicename;
+    Param<Addr> pio_addr;
+    SimObjectParam<AlphaSystem *> system;
     SimObjectParam<Platform *> platform;
-    SimObjectParam<MemoryController *> mmu;
-    Param<Addr> addr;
-    SimObjectParam<HierParams *> hier;
-    SimObjectParam<Bus*> pio_bus;
     Param<Tick> pio_latency;
-    Param<string> devicename;
 
 END_DECLARE_SIM_OBJECT_PARAMS(BadDevice)
 
 BEGIN_INIT_SIM_OBJECT_PARAMS(BadDevice)
 
-    INIT_PARAM(platform, "Platform"),
-    INIT_PARAM(mmu, "Memory Controller"),
-    INIT_PARAM(addr, "Device Address"),
-    INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams),
-    INIT_PARAM_DFLT(pio_bus, "The IO Bus to attach to", NULL),
-    INIT_PARAM_DFLT(pio_latency, "Programmed IO latency", 1000),
-    INIT_PARAM(devicename, "Name of device to error on")
+    INIT_PARAM(devicename, "Name of device to error on"),
+    INIT_PARAM(pio_addr, "Device Address"),
+    INIT_PARAM(system, "system object"),
+    INIT_PARAM(platform, "platform"),
+    INIT_PARAM_DFLT(pio_latency, "Programmed IO latency", 1000)
 
 END_INIT_SIM_OBJECT_PARAMS(BadDevice)
 
 CREATE_SIM_OBJECT(BadDevice)
 {
-    return new BadDevice(getInstanceName(), addr, mmu, hier, pio_bus,
-                         devicename);
+    BadDevice::Params *p = new BadDevice::Params;
+    p->name =getInstanceName();
+    p->platform = platform;
+    p->pio_addr = pio_addr;
+    p->pio_delay = pio_latency;
+    p->system = system;
+    p->devicename = devicename;
+    return new BadDevice(p);
 }
 
 REGISTER_SIM_OBJECT("BadDevice", BadDevice)
diff --git a/dev/baddev.hh b/dev/baddev.hh
index 189f28331..4cf0d6ba4 100644
--- a/dev/baddev.hh
+++ b/dev/baddev.hh
@@ -37,7 +37,6 @@
 #include "base/range.hh"
 #include "dev/io_device.hh"
 
-class MemoryController;
 
 /**
  * BadDevice
@@ -45,51 +44,29 @@ class MemoryController;
  * the user that the kernel they are running has unsupported
  * options (i.e. frame buffer)
  */
-class BadDevice : public PioDevice
+class BadDevice : public BasicPioDevice
 {
   private:
-    Addr addr;
-    static const Addr size = 0xf;
-
     std::string devname;
 
   public:
+    struct Params : public BasicPioDevice::Params
+    {
+        std::string device_name;
+    };
+  protected:
+    const Params *params() const { return (const Params *)_params; }
+
+  public:
      /**
       * Constructor for the Baddev Class.
-      * @param name name of the object
+      * @param p object parameters
       * @param a base address of the write
-      * @param mmu the memory controller
-      * @param hier object to store parameters universal the device hierarchy
-      * @param bus The bus that this device is attached to
-      * @param devicename device that is not implemented
-      */
-    BadDevice(const std::string &name, Addr a, MemoryController *mmu,
-              HierParams *hier, Bus *bus, const std::string &devicename);
-
-    /**
-      * On a read event we just panic aand hopefully print a
-      * meaningful error message.
-      * @param req Contains the address to read from.
-      * @param data A pointer to write the read data to.
-      * @return The fault condition of the access.
-      */
-    virtual Fault read(MemReqPtr &req, uint8_t *data);
-
-    /**
-      * On a write event we just panic aand hopefully print a
-      * meaningful error message.
-      * @param req Contains the address to write to.
-      * @param data The data to write.
-      * @return The fault condition of the access.
       */
-    virtual Fault write(MemReqPtr &req, const uint8_t *data);
+    BadDevice(Params *p);
 
-    /**
-     * Return how long this access will take.
-     * @param req the memory request to calcuate
-     * @return Tick when the request is done
-     */
-    Tick cacheAccess(MemReqPtr &req);
+    virtual Tick read(Packet &pkt);
+    virtual Tick write(Packet &pkt);
 };
 
 #endif // __DEV_BADDEV_HH__
diff --git a/dev/io_device.cc b/dev/io_device.cc
index a72944cfc..15c835ded 100644
--- a/dev/io_device.cc
+++ b/dev/io_device.cc
@@ -88,6 +88,14 @@ PioDevice::~PioDevice()
         delete pioPort;
 }
 
+void
+BasicPioDevice::addressRanges(AddrRangeList &range_list)
+{
+    assert(pioSize != 0);
+    range_list.clear();
+    range_list.push_back(RangeSize(pioAddr, pioSize));
+}
+
 
 DmaPort::DmaPort(DmaDevice *dev)
         : device(dev)
diff --git a/dev/io_device.hh b/dev/io_device.hh
index a43527b37..b787fa4fd 100644
--- a/dev/io_device.hh
+++ b/dev/io_device.hh
@@ -267,6 +267,11 @@ class BasicPioDevice : public PioDevice
         : PioDevice(p), pioAddr(p->pio_addr), pioSize(0), pioDelay(p->pio_delay)
     {}
 
+    /** return the address ranges that this device responds to.
+     * @params range_list range list to populate with ranges
+     */
+    addressRanges(AddrRangeList &range_list);
+
 };
 
 class DmaDevice : public PioDevice
diff --git a/dev/isa_fake.cc b/dev/isa_fake.cc
index 7ce43b712..7b6a01833 100644
--- a/dev/isa_fake.cc
+++ b/dev/isa_fake.cc
@@ -37,7 +37,7 @@
 #include "arch/alpha/ev5.hh"
 #include "base/trace.hh"
 #include "cpu/exec_context.hh"
-#include "dev/isa_fake.hh"
+#include "dev/tsunami_fake.hh"
 #include "mem/bus/bus.hh"
 #include "mem/bus/pio_interface.hh"
 #include "mem/bus/pio_interface_impl.hh"
@@ -46,96 +46,112 @@
 #include "sim/system.hh"
 
 using namespace std;
-using namespace TheISA;
 
-IsaFake::IsaFake(const string &name, Addr a, MemoryController *mmu,
-                         HierParams *hier, Bus *pio_bus, Addr size)
-    : PioDevice(name, NULL), addr(a)
+IsaFake::IsaFake(Params *p)
+    : BasicPioDevice(p)
 {
-    mmu->add_child(this, RangeSize(addr, size));
-
-    if (pio_bus) {
-        pioInterface = newPioInterface(name + ".pio", hier, pio_bus, this,
-                                      &IsaFake::cacheAccess);
-        pioInterface->addAddrRange(RangeSize(addr, size));
-    }
+    pioSize = p->pio_size;
 }
 
-Fault
-IsaFake::read(MemReqPtr &req, uint8_t *data)
+Tick
+IsaFake::read(Packet &pkt)
 {
-    DPRINTF(Tsunami, "read  va=%#x size=%d\n",
-            req->vaddr, req->size);
+    assert(pkt.result == Unknown);
+    assert(pkt.addr >= pioAddr && pkt.addr < pioAddr + pioSize);
 
-#if TRACING_ON
-    Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask)) >> 6;
-#endif
+    pkt.time = curTick + pioDelay;
+    Addr daddr = pkt.addr - pioAddr;
 
-    switch (req->size) {
+    DPRINTF(Tsunami, "read  va=%#x size=%d\n", pkt.addr, pkt.size);
+
+    uint8_t *data8;
+    uint16_t *data16;
+    uint32_t *data32;
+    uint64_t *data64;
 
+    switch (req->size) {
       case sizeof(uint64_t):
-         *(uint64_t*)data = 0xFFFFFFFFFFFFFFFFULL;
-         return NoFault;
+         if (!pkt.data) {
+             data64 = new uint64_t;
+             pkt.data = (uint8_t*)data64;
+         } else {
+             data64 = (uint64_t*)pkt.data;
+         }
+         *data64 = 0xFFFFFFFFFFFFFFFFULL;
+         break;
       case sizeof(uint32_t):
-         *(uint32_t*)data = 0xFFFFFFFF;
-         return NoFault;
+         if (!pkt.data) {
+             data32 = new uint32_t;
+             pkt.data = (uint8_t*)data32;
+         } else {
+             data32 = (uint64_t*)pkt.data;
+         }
+         *data32 = 0xFFFFFFFF;
+         break;
       case sizeof(uint16_t):
-         *(uint16_t*)data = 0xFFFF;
-         return NoFault;
+         if (!pkt.data) {
+             data16 = new uint16_t;
+             pkt.data = (uint8_t*)data16;
+         } else {
+             data16 = (uint64_t*)pkt.data;
+         }
+         *data16 = 0xFFFF;
+         break;
       case sizeof(uint8_t):
-         *(uint8_t*)data = 0xFF;
-         return NoFault;
-
+         if (!pkt.data) {
+             data8 = new uint8_t;
+             pkt.data = data8;
+         } else {
+             data8 = (uint8_t*)pkt.data;
+         }
+         *data8 = 0xFF;
+         break;
       default:
         panic("invalid access size(?) for PCI configspace!\n");
     }
-    DPRINTFN("Isa FakeSMC  ERROR: read  daddr=%#x size=%d\n", daddr, req->size);
-
-    return NoFault;
+    pkt.result = Success;
+    return pioDelay;
 }
 
 Fault
-IsaFake::write(MemReqPtr &req, const uint8_t *data)
-{
-    DPRINTF(Tsunami, "write - va=%#x size=%d \n",
-            req->vaddr, req->size);
-
-    //:Addr daddr = (req->paddr & addr_mask) >> 6;
-
-    return NoFault;
-}
-
-Tick
-IsaFake::cacheAccess(MemReqPtr &req)
+IsaFake::write(Packet &pkt)
 {
-    return curTick;
+    pkt.time = curTick + pioDelay;
+    DPRINTF(Tsunami, "write - va=%#x size=%d \n", pkt.addr, pkt.size);
+    pkt.result = Success;
+    return pioDelay;
 }
 
 BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
 
-    SimObjectParam<MemoryController *> mmu;
-    Param<Addr> addr;
-    SimObjectParam<Bus*> pio_bus;
+    Param<Addr> pio_addr;
     Param<Tick> pio_latency;
-    SimObjectParam<HierParams *> hier;
-    Param<Addr> size;
+    Param<Addr> pio_size;
+    SimObjectParam<Platform *> platform;
+    SimObjectParam<System *> system;
 
 END_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
 
 BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake)
 
-    INIT_PARAM(mmu, "Memory Controller"),
-    INIT_PARAM(addr, "Device Address"),
-    INIT_PARAM_DFLT(pio_bus, "The IO Bus to attach to", NULL),
-    INIT_PARAM_DFLT(pio_latency, "Programmed IO latency", 1000),
-    INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams),
-    INIT_PARAM_DFLT(size, "Size of address range", 0x8)
+    INIT_PARAM(pio_addr, "Device Address"),
+    INIT_PARAM(pio_latency, "Programmed IO latency"),
+    INIT_PARAM(pio_size, "Size of address range"),
+    INIT_PARAM(platform, "platform"),
+    INIT_PARAM(system, "system object")
 
 END_INIT_SIM_OBJECT_PARAMS(IsaFake)
 
 CREATE_SIM_OBJECT(IsaFake)
 {
-    return new IsaFake(getInstanceName(), addr, mmu, hier, pio_bus, size);
+    IsaFake::Params *p = new IsaFake::Params;
+    p->name = getInstanceName();
+    p->pio_addr = pio_addr;
+    p->pio_delay = pio_latency;
+    p->pio_size = pio_size;
+    p->platform = platform;
+    p->system = system;
+    return new IsaFake(p);
 }
 
 REGISTER_SIM_OBJECT("IsaFake", IsaFake)
diff --git a/dev/isa_fake.hh b/dev/isa_fake.hh
index 73e40c681..29050833d 100644
--- a/dev/isa_fake.hh
+++ b/dev/isa_fake.hh
@@ -37,51 +37,42 @@
 #include "base/range.hh"
 #include "dev/io_device.hh"
 
-class MemoryController;
-
 /**
  * IsaFake is a device that returns -1 on all reads and
  * accepts all writes. It is meant to be placed at an address range
  * so that an mcheck doesn't occur when an os probes a piece of hw
  * that doesn't exist (e.g. UARTs1-3).
  */
-class IsaFake : public PioDevice
+class IsaFake : public BasicPioDevice
 {
-  private:
-    /** The address in memory that we respond to */
-    Addr addr;
+  public:
+    struct Params : public BasicPioDevice::Params
+    {
+        Addr pio_size;
+    };
+  protected:
+    const Params *params() const { return (const Params*)_params; }
 
   public:
     /**
       * The constructor for Tsunmami Fake just registers itself with the MMU.
-      * @param name name of this device.
-      * @param a address to respond to.
-      * @param mmu the mmu we register with.
-      * @param size number of addresses to respond to
+      * @param p params structure
       */
-    IsaFake(const std::string &name, Addr a, MemoryController *mmu,
-                HierParams *hier, Bus *pio_bus, Addr size = 0x8);
+    IsaFake(Params *p);
 
     /**
      * This read always returns -1.
      * @param req The memory request.
      * @param data Where to put the data.
      */
-    virtual Fault read(MemReqPtr &req, uint8_t *data);
+    virtual Tick read(Packet &pkt);
 
     /**
      * All writes are simply ignored.
      * @param req The memory request.
      * @param data the data to not write.
      */
-    virtual Fault write(MemReqPtr &req, const uint8_t *data);
-
-    /**
-     * Return how long this access will take.
-     * @param req the memory request to calcuate
-     * @return Tick when the request is done
-     */
-    Tick cacheAccess(MemReqPtr &req);
+    virtual Tick write(Packet &pkt);
 };
 
-#endif // __ISA_FAKE_HH__
+#endif // __TSUNAMI_FAKE_HH__
diff --git a/dev/tsunami_cchip.cc b/dev/tsunami_cchip.cc
index f05b6b43e..645b64d14 100644
--- a/dev/tsunami_cchip.cc
+++ b/dev/tsunami_cchip.cc
@@ -195,202 +195,185 @@ TsunamiCChip::write(Packet &pkt)
 
     assert(pkt.addr >= pioAddr && pkt.addr < pioAddr + pioSize);
     Addr daddr = pkt.addr - pioAddr;
+    Addr regnum = (pkt.addr - pioAddr) >> 6 ;
+
 
     uint64_t val = *(uint64_t *)pkt.data;
     assert(pkt.size == sizeof(uint64_t));
 
-    DPRINTF(Tsunami, "write - va=%#x value=%#x size=%d \n",
-            req->vaddr, *(uint64_t*)data, req->size);
-
-    Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask));
-    Addr regnum = (req->paddr - (addr & EV5::PAddrImplMask)) >> 6;
+    DPRINTF(Tsunami, "write - addr=%#x value=%#x\n", req->addr, val);
 
     bool supportedWrite = false;
 
-    switch (req->size) {
 
-      case sizeof(uint64_t):
-          if (daddr & TSDEV_CC_BDIMS)
-          {
-              int number = (daddr >> 4) & 0x3F;
-
-              uint64_t bitvector;
-              uint64_t olddim;
-              uint64_t olddir;
-
-              olddim = dim[number];
-              olddir = dir[number];
-              dim[number] = *(uint64_t*)data;
-              dir[number] = dim[number] & drir;
-              for(int x = 0; x < Tsunami::Max_CPUs; x++)
-              {
-                  bitvector = ULL(1) << x;
-                  // Figure out which bits have changed
-                  if ((dim[number] & bitvector) != (olddim & bitvector))
-                  {
-                      // The bit is now set and it wasn't before (set)
-                      if((dim[number] & bitvector) && (dir[number] & bitvector))
-                      {
-                          tsunami->intrctrl->post(number, TheISA::INTLEVEL_IRQ1, x);
-                          DPRINTF(Tsunami, "dim write resulting in posting dir"
-                                  " interrupt to cpu %d\n", number);
-                      }
-                      else if ((olddir & bitvector) &&
-                              !(dir[number] & bitvector))
-                      {
-                          // The bit was set and now its now clear and
-                          // we were interrupting on that bit before
-                          tsunami->intrctrl->clear(number, TheISA::INTLEVEL_IRQ1, x);
-                          DPRINTF(Tsunami, "dim write resulting in clear"
-                                  " dir interrupt to cpu %d\n", number);
+    if (daddr & TSDEV_CC_BDIMS)
+    {
+        int number = (daddr >> 4) & 0x3F;
+
+        uint64_t bitvector;
+        uint64_t olddim;
+        uint64_t olddir;
+
+        olddim = dim[number];
+        olddir = dir[number];
+        dim[number] = val;
+        dir[number] = dim[number] & drir;
+        for(int x = 0; x < Tsunami::Max_CPUs; x++)
+        {
+            bitvector = ULL(1) << x;
+            // Figure out which bits have changed
+            if ((dim[number] & bitvector) != (olddim & bitvector))
+            {
+                // The bit is now set and it wasn't before (set)
+                if((dim[number] & bitvector) && (dir[number] & bitvector))
+                {
+                    tsunami->intrctrl->post(number, TheISA::INTLEVEL_IRQ1, x);
+                    DPRINTF(Tsunami, "dim write resulting in posting dir"
+                            " interrupt to cpu %d\n", number);
+                }
+                else if ((olddir & bitvector) &&
+                        !(dir[number] & bitvector))
+                {
+                    // The bit was set and now its now clear and
+                    // we were interrupting on that bit before
+                    tsunami->intrctrl->clear(number, TheISA::INTLEVEL_IRQ1, x);
+                    DPRINTF(Tsunami, "dim write resulting in clear"
+                            " dir interrupt to cpu %d\n", number);
 
-                      }
+                }
 
 
-                  }
-              }
-              return NoFault;
-          }
+            }
+        }
+    } else {
+        switch(regnum) {
+          case TSDEV_CC_CSR:
+              panic("TSDEV_CC_CSR write\n");
+          case TSDEV_CC_MTR:
+              panic("TSDEV_CC_MTR write not implemented\n");
+          case TSDEV_CC_MISC:
+            uint64_t ipreq;
+            ipreq = (val >> 12) & 0xF;
+            //If it is bit 12-15, this is an IPI post
+            if (ipreq) {
+                reqIPI(ipreq);
+                supportedWrite = true;
+            }
 
-          switch(regnum) {
-              case TSDEV_CC_CSR:
-                  panic("TSDEV_CC_CSR write\n");
-                  return NoFault;
-              case TSDEV_CC_MTR:
-                  panic("TSDEV_CC_MTR write not implemented\n");
-                   return NoFault;
-              case TSDEV_CC_MISC:
-                uint64_t ipreq;
-                ipreq = (*(uint64_t*)data >> 12) & 0xF;
-                //If it is bit 12-15, this is an IPI post
-                if (ipreq) {
-                    reqIPI(ipreq);
-                    supportedWrite = true;
-                }
+            //If it is bit 8-11, this is an IPI clear
+            uint64_t ipintr;
+            ipintr = (val >> 8) & 0xF;
+            if (ipintr) {
+                clearIPI(ipintr);
+                supportedWrite = true;
+            }
 
-                //If it is bit 8-11, this is an IPI clear
-                uint64_t ipintr;
-                ipintr = (*(uint64_t*)data >> 8) & 0xF;
-                if (ipintr) {
-                    clearIPI(ipintr);
-                    supportedWrite = true;
-                }
+            //If it is the 4-7th bit, clear the RTC interrupt
+            uint64_t itintr;
+              itintr = (val >> 4) & 0xF;
+            if (itintr) {
+                  clearITI(itintr);
+                supportedWrite = true;
+            }
 
-                //If it is the 4-7th bit, clear the RTC interrupt
-                uint64_t itintr;
-                itintr = (*(uint64_t*)data >> 4) & 0xF;
-                if (itintr) {
-                    clearITI(itintr);
-                    supportedWrite = true;
-                }
+              // ignore NXMs
+              if (val & 0x10000000)
+                  supportedWrite = true;
 
-                // ignore NXMs
-                if (*(uint64_t*)data & 0x10000000)
-                    supportedWrite = true;
+            if(!supportedWrite)
+                  panic("TSDEV_CC_MISC write not implemented\n");
 
-                if(!supportedWrite)
-                    panic("TSDEV_CC_MISC write not implemented\n");
 
+            case TSDEV_CC_AAR0:
+            case TSDEV_CC_AAR1:
+            case TSDEV_CC_AAR2:
+            case TSDEV_CC_AAR3:
+                panic("TSDEV_CC_AARx write not implemeted\n");
                 return NoFault;
-              case TSDEV_CC_AAR0:
-              case TSDEV_CC_AAR1:
-              case TSDEV_CC_AAR2:
-              case TSDEV_CC_AAR3:
-                  panic("TSDEV_CC_AARx write not implemeted\n");
-                  return NoFault;
-              case TSDEV_CC_DIM0:
-              case TSDEV_CC_DIM1:
-              case TSDEV_CC_DIM2:
-              case TSDEV_CC_DIM3:
-                  int number;
-                  if(regnum == TSDEV_CC_DIM0)
-                      number = 0;
-                  else if(regnum == TSDEV_CC_DIM1)
-                      number = 1;
-                  else if(regnum == TSDEV_CC_DIM2)
-                      number = 2;
-                  else
-                      number = 3;
-
-                  uint64_t bitvector;
-                  uint64_t olddim;
-                  uint64_t olddir;
-
-                  olddim = dim[number];
-                  olddir = dir[number];
-                  dim[number] = *(uint64_t*)data;
-                  dir[number] = dim[number] & drir;
-                  for(int x = 0; x < 64; x++)
-                  {
-                      bitvector = ULL(1) << x;
-                      // Figure out which bits have changed
-                      if ((dim[number] & bitvector) != (olddim & bitvector))
-                      {
-                          // The bit is now set and it wasn't before (set)
-                          if((dim[number] & bitvector) && (dir[number] & bitvector))
-                          {
-                              tsunami->intrctrl->post(number, TheISA::INTLEVEL_IRQ1, x);
-                              DPRINTF(Tsunami, "posting dir interrupt to cpu 0\n");
-                          }
-                          else if ((olddir & bitvector) &&
-                                  !(dir[number] & bitvector))
-                          {
-                              // The bit was set and now its now clear and
-                              // we were interrupting on that bit before
-                              tsunami->intrctrl->clear(number, TheISA::INTLEVEL_IRQ1, x);
-                              DPRINTF(Tsunami, "dim write resulting in clear"
-                                      " dir interrupt to cpu %d\n",
-                                      x);
-
-                          }
-
-
-                      }
-                  }
-                  return NoFault;
-              case TSDEV_CC_DIR0:
-              case TSDEV_CC_DIR1:
-              case TSDEV_CC_DIR2:
-              case TSDEV_CC_DIR3:
-                  panic("TSDEV_CC_DIR write not implemented\n");
-              case TSDEV_CC_DRIR:
-                  panic("TSDEV_CC_DRIR write not implemented\n");
-              case TSDEV_CC_PRBEN:
-                  panic("TSDEV_CC_PRBEN write not implemented\n");
-              case TSDEV_CC_IIC0:
-              case TSDEV_CC_IIC1:
-              case TSDEV_CC_IIC2:
-              case TSDEV_CC_IIC3:
-                  panic("TSDEV_CC_IICx write not implemented\n");
-              case TSDEV_CC_MPR0:
-              case TSDEV_CC_MPR1:
-              case TSDEV_CC_MPR2:
-              case TSDEV_CC_MPR3:
-                  panic("TSDEV_CC_MPRx write not implemented\n");
-              case TSDEV_CC_IPIR:
-                  clearIPI(*(uint64_t*)data);
-                  return NoFault;
-              case TSDEV_CC_ITIR:
-                  clearITI(*(uint64_t*)data);
-                  return NoFault;
-              case TSDEV_CC_IPIQ:
-                  reqIPI(*(uint64_t*)data);
-                  return NoFault;
-              default:
-                  panic("default in cchip read reached, accessing 0x%x\n");
-          }
+            case TSDEV_CC_DIM0:
+            case TSDEV_CC_DIM1:
+            case TSDEV_CC_DIM2:
+            case TSDEV_CC_DIM3:
+                int number;
+                if(regnum == TSDEV_CC_DIM0)
+                    number = 0;
+                else if(regnum == TSDEV_CC_DIM1)
+                    number = 1;
+                else if(regnum == TSDEV_CC_DIM2)
+                    number = 2;
+                else
+                    number = 3;
+
+                uint64_t bitvector;
+                uint64_t olddim;
+                uint64_t olddir;
+
+                olddim = dim[number];
+                olddir = dir[number];
+                dim[number] = val;
+                dir[number] = dim[number] & drir;
+                for(int x = 0; x < 64; x++)
+                {
+                    bitvector = ULL(1) << x;
+                    // Figure out which bits have changed
+                    if ((dim[number] & bitvector) != (olddim & bitvector))
+                    {
+                        // The bit is now set and it wasn't before (set)
+                        if((dim[number] & bitvector) && (dir[number] & bitvector))
+                        {
+                          tsunami->intrctrl->post(number, TheISA::INTLEVEL_IRQ1, x);
+                          DPRINTF(Tsunami, "posting dir interrupt to cpu 0\n");
+                        }
+                        else if ((olddir & bitvector) &&
+                                !(dir[number] & bitvector))
+                        {
+                            // The bit was set and now its now clear and
+                            // we were interrupting on that bit before
+                            tsunami->intrctrl->clear(number, TheISA::INTLEVEL_IRQ1, x);
+                          DPRINTF(Tsunami, "dim write resulting in clear"
+                                    " dir interrupt to cpu %d\n",
+                                    x);
 
-      break;
-      case sizeof(uint32_t):
-      case sizeof(uint16_t):
-      case sizeof(uint8_t):
-      default:
-        panic("invalid access size(?) for tsunami register!\n");
-    }
+                        }
 
-    DPRINTFN("Tsunami ERROR: write daddr=%#x size=%d\n", daddr, req->size);
 
-    return NoFault;
+                    }
+                }
+                break;
+            case TSDEV_CC_DIR0:
+            case TSDEV_CC_DIR1:
+            case TSDEV_CC_DIR2:
+            case TSDEV_CC_DIR3:
+                panic("TSDEV_CC_DIR write not implemented\n");
+            case TSDEV_CC_DRIR:
+                panic("TSDEV_CC_DRIR write not implemented\n");
+            case TSDEV_CC_PRBEN:
+                panic("TSDEV_CC_PRBEN write not implemented\n");
+            case TSDEV_CC_IIC0:
+            case TSDEV_CC_IIC1:
+            case TSDEV_CC_IIC2:
+            case TSDEV_CC_IIC3:
+                panic("TSDEV_CC_IICx write not implemented\n");
+            case TSDEV_CC_MPR0:
+            case TSDEV_CC_MPR1:
+            case TSDEV_CC_MPR2:
+            case TSDEV_CC_MPR3:
+                panic("TSDEV_CC_MPRx write not implemented\n");
+            case TSDEV_CC_IPIR:
+                clearIPI(val);
+                break;
+            case TSDEV_CC_ITIR:
+                clearITI(val);
+                break;
+            case TSDEV_CC_IPIQ:
+                reqIPI(val);
+                break;
+            default:
+              panic("default in cchip read reached, accessing 0x%x\n");
+        }  // swtich(regnum)
+    } // not BIG_TSUNAMI write
+    pkt.result = Success;
+    return pioDelay;
 }
 
 void
@@ -474,11 +457,11 @@ TsunamiCChip::postRTC()
 
     for (int i = 0; i < size; i++) {
         uint64_t cpumask = ULL(1) << i;
-        if (!(cpumask & itint)) {
-            itint |= cpumask;
-            tsunami->intrctrl->post(i, TheISA::INTLEVEL_IRQ2, 0);
-            DPRINTF(Tsunami, "Posting RTC interrupt to cpu=%d", i);
-        }
+       if (!(cpumask & itint)) {
+           itint |= cpumask;
+           tsunami->intrctrl->post(i, TheISA::INTLEVEL_IRQ2, 0);
+           DPRINTF(Tsunami, "Posting RTC interrupt to cpu=%d", i);
+       }
     }
 
 }
@@ -493,11 +476,11 @@ TsunamiCChip::postDRIR(uint32_t interrupt)
 
     for(int i=0; i < size; i++) {
         dir[i] = dim[i] & drir;
-        if (dim[i] & bitvector) {
-                tsunami->intrctrl->post(i, TheISA::INTLEVEL_IRQ1, interrupt);
-                DPRINTF(Tsunami, "posting dir interrupt to cpu %d,"
+       if (dim[i] & bitvector) {
+              tsunami->intrctrl->post(i, TheISA::INTLEVEL_IRQ1, interrupt);
+              DPRINTF(Tsunami, "posting dir interrupt to cpu %d,"
                         "interrupt %d\n",i, interrupt);
-        }
+       }
     }
 }
 
@@ -512,13 +495,13 @@ TsunamiCChip::clearDRIR(uint32_t interrupt)
     {
         drir &= ~bitvector;
         for(int i=0; i < size; i++) {
-            if (dir[i] & bitvector) {
-                tsunami->intrctrl->clear(i, TheISA::INTLEVEL_IRQ1, interrupt);
-                DPRINTF(Tsunami, "clearing dir interrupt to cpu %d,"
+           if (dir[i] & bitvector) {
+               tsunami->intrctrl->clear(i, TheISA::INTLEVEL_IRQ1, interrupt);
+               DPRINTF(Tsunami, "clearing dir interrupt to cpu %d,"
                     "interrupt %d\n",i, interrupt);
 
-            }
-            dir[i] = dim[i] & drir;
+           }
+           dir[i] = dim[i] & drir;
         }
     }
     else
@@ -554,30 +537,34 @@ TsunamiCChip::unserialize(Checkpoint *cp, const std::string &section)
 
 BEGIN_DECLARE_SIM_OBJECT_PARAMS(TsunamiCChip)
 
-    SimObjectParam<Tsunami *> tsunami;
-    SimObjectParam<MemoryController *> mmu;
-    Param<Addr> addr;
-    SimObjectParam<Bus*> pio_bus;
+    Param<Addr> pio_addr;
     Param<Tick> pio_latency;
-    SimObjectParam<HierParams *> hier;
+    SimObjectParam<Platform *> platform;
+    SimObjectParam<System *> system;
+    SimObjectParam<Tsunami *> tsunami;
 
 END_DECLARE_SIM_OBJECT_PARAMS(TsunamiCChip)
 
 BEGIN_INIT_SIM_OBJECT_PARAMS(TsunamiCChip)
 
-    INIT_PARAM(tsunami, "Tsunami"),
-    INIT_PARAM(mmu, "Memory Controller"),
-    INIT_PARAM(addr, "Device Address"),
-    INIT_PARAM_DFLT(pio_bus, "The IO Bus to attach to", NULL),
-    INIT_PARAM_DFLT(pio_latency, "Programmed IO latency in bus cycles", 1),
-    INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams)
+    INIT_PARAM(pio_addr, "Device Address"),
+    INIT_PARAM(pio_latency, "Programmed IO latency"),
+    INIT_PARAM(platform, "platform"),
+    INIT_PARAM(system, "system object"),
+    INIT_PARAM(tsunami, "Tsunami")
 
 END_INIT_SIM_OBJECT_PARAMS(TsunamiCChip)
 
 CREATE_SIM_OBJECT(TsunamiCChip)
 {
-    return new TsunamiCChip(getInstanceName(), tsunami, addr, mmu, hier,
-                            pio_bus, pio_latency);
+    TsunamiCChip::Params *p = new TsunamiCChip::Params;
+    p->name = getInstanceName();
+    p->pio_addr = pio_addr;
+    p->pio_delay = pio_latency;
+    p->platform = platform;
+    p->system = system;
+    p->tsunami = tsunami;
+    return new TsunamiCChip(p);
 }
 
 REGISTER_SIM_OBJECT("TsunamiCChip", TsunamiCChip)
diff --git a/dev/tsunami_io.cc b/dev/tsunami_io.cc
index 14fa97341..5b73230bf 100644
--- a/dev/tsunami_io.cc
+++ b/dev/tsunami_io.cc
@@ -41,14 +41,11 @@
 #include "dev/tsunami_io.hh"
 #include "dev/tsunami.hh"
 #include "dev/pitreg.h"
-#include "mem/bus/bus.hh"
-#include "mem/bus/pio_interface.hh"
-#include "mem/bus/pio_interface_impl.hh"
+#include "mem/bus/port.hh"
 #include "sim/builder.hh"
 #include "dev/tsunami_cchip.hh"
 #include "dev/tsunamireg.h"
 #include "dev/rtcreg.h"
-#include "mem/functional/memory_control.hh"
 
 using namespace std;
 //Should this be AlphaISA?
@@ -80,28 +77,28 @@ TsunamiIO::RTC::set_time(time_t t)
 }
 
 void
-TsunamiIO::RTC::writeAddr(const uint8_t *data)
+TsunamiIO::RTC::writeAddr(const uint8_t data)
 {
     if (*data <= RTC_STAT_REGD)
-        addr = *data;
+        addr = data;
     else
         panic("RTC addresses over 0xD are not implemented.\n");
 }
 
 void
-TsunamiIO::RTC::writeData(const uint8_t *data)
+TsunamiIO::RTC::writeData(const uint8_t data)
 {
     if (addr < RTC_STAT_REGA)
-        clock_data[addr] = *data;
+        clock_data[addr] = data;
     else {
         switch (addr) {
           case RTC_STAT_REGA:
-            if (*data != (RTCA_32768HZ | RTCA_1024HZ))
+            if (data != (RTCA_32768HZ | RTCA_1024HZ))
                 panic("Unimplemented RTC register A value write!\n");
             stat_regA = *data;
             break;
           case RTC_STAT_REGB:
-            if ((*data & ~(RTCB_PRDC_IE | RTCB_SQWE)) != (RTCB_BIN | RTCB_24HR))
+            if ((data & ~(RTCB_PRDC_IE | RTCB_SQWE)) != (RTCB_BIN | RTCB_24HR))
                 panic("Write to RTC reg B bits that are not implemented!\n");
 
             if (*data & RTCB_PRDC_IE) {
@@ -111,7 +108,7 @@ TsunamiIO::RTC::writeData(const uint8_t *data)
                 if (event.scheduled())
                     event.deschedule();
             }
-            stat_regB = *data;
+            stat_regB = data;
             break;
           case RTC_STAT_REGC:
           case RTC_STAT_REGD:
@@ -207,12 +204,12 @@ TsunamiIO::PITimer::PITimer(const string &name)
 }
 
 void
-TsunamiIO::PITimer::writeControl(const uint8_t *data)
+TsunamiIO::PITimer::writeControl(const uint8_t data)
 {
     int rw;
     int sel;
 
-    sel = GET_CTRL_SEL(*data);
+    sel = GET_CTRL_SEL(data);
 
     if (sel == PIT_READ_BACK)
        panic("PITimer Read-Back Command is not implemented.\n");
@@ -223,8 +220,8 @@ TsunamiIO::PITimer::writeControl(const uint8_t *data)
         counter[sel]->latchCount();
     else {
         counter[sel]->setRW(rw);
-        counter[sel]->setMode(GET_CTRL_MODE(*data));
-        counter[sel]->setBCD(GET_CTRL_BCD(*data));
+        counter[sel]->setMode(GET_CTRL_MODE(data));
+        counter[sel]->setBCD(GET_CTRL_BCD(data));
     }
 }
 
@@ -296,11 +293,11 @@ TsunamiIO::PITimer::Counter::read(uint8_t *data)
 }
 
 void
-TsunamiIO::PITimer::Counter::write(const uint8_t *data)
+TsunamiIO::PITimer::Counter::write(const uint8_t data)
 {
     switch (write_byte) {
       case LSB:
-        count = (count & 0xFF00) | *data;
+        count = (count & 0xFF00) | data;
 
         if (event.scheduled())
           event.deschedule();
@@ -309,7 +306,7 @@ TsunamiIO::PITimer::Counter::write(const uint8_t *data)
         break;
 
       case MSB:
-        count = (count & 0x00FF) | (*data << 8);
+        count = (count & 0x00FF) | (data << 8);
         period = count;
 
         if (period > 0) {
@@ -417,26 +414,17 @@ TsunamiIO::PITimer::Counter::CounterEvent::description()
     return "tsunami 8254 Interval timer";
 }
 
-TsunamiIO::TsunamiIO(const string &name, Tsunami *t, time_t init_time,
-                     Addr a, MemoryController *mmu, HierParams *hier,
-                     Bus *pio_bus, Tick pio_latency, Tick ci)
-    : PioDevice(name, t), addr(a), clockInterval(ci), tsunami(t),
-      pitimer(name + "pitimer"), rtc(name + ".rtc", t, ci)
+TsunamiIO::TsunamiIO(Params *p)
+    : BasicPioDevice(p), tsunami(p->tsunami), pitimer(p->name + "pitimer"),
+      rtc(name + ".rtc", p->tsunami, p->frequency)
 {
-    mmu->add_child(this, RangeSize(addr, size));
-
-    if (pio_bus) {
-        pioInterface = newPioInterface(name + ".pio", hier, pio_bus, this,
-                                       &TsunamiIO::cacheAccess);
-        pioInterface->addAddrRange(RangeSize(addr, size));
-        pioLatency = pio_latency * pio_bus->clockRate;
-    }
+    pioSize = 0xff;
 
     // set the back pointer from tsunami to myself
     tsunami->io = this;
 
     timerData = 0;
-    rtc.set_time(init_time == 0 ? time(NULL) : init_time);
+    rtc.set_time(p->init_time == 0 ? time(NULL) : init_time);
     picr = 0;
     picInterrupting = false;
 }
@@ -444,185 +432,175 @@ TsunamiIO::TsunamiIO(const string &name, Tsunami *t, time_t init_time,
 Tick
 TsunamiIO::frequency() const
 {
-    return Clock::Frequency / clockInterval;
+    return Clock::Frequency / params()->frequency;
 }
 
 Fault
-TsunamiIO::read(MemReqPtr &req, uint8_t *data)
+TsunamiIO::read(Packet &pkt)
 {
-    DPRINTF(Tsunami, "io read  va=%#x size=%d IOPorrt=%#x\n",
-            req->vaddr, req->size, req->vaddr & 0xfff);
+    assert(pkt.result == Unknown);
+    assert(pkt.addr >= pioAddr && pkt.addr < pioAddr + pioSize);
+
+    pkt.time = curTick + pioDelay;
+    Addr daddr = pkt.addr - pioAddr;
 
-    Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask));
+    DPRINTF(Tsunami, "io read  va=%#x size=%d IOPorrt=%#x\n", pkt.addr,
+            pkt.size, daddr);
 
 
-    switch(req->size) {
-      case sizeof(uint8_t):
+    uint8_t *data8;
+    uint64_t *data64;
+
+    if (pkt.size == sizeof(uint8_t)) {
+
+        if (!pkt.data) {
+            data8 = new uint8_t;
+            pkt.data = data8;
+        } else
+            data8 = pkt.data;
         switch(daddr) {
           // PIC1 mask read
           case TSDEV_PIC1_MASK:
-            *(uint8_t*)data = ~mask1;
-            return NoFault;
+            *data8 = ~mask1;
+            break;
           case TSDEV_PIC2_MASK:
-            *(uint8_t*)data = ~mask2;
-            return NoFault;
+            *data8 = ~mask2;
+            break;
           case TSDEV_PIC1_ISR:
               // !!! If this is modified 64bit case needs to be too
               // Pal code has to do a 64 bit physical read because there is
               // no load physical byte instruction
-              *(uint8_t*)data = picr;
-              return NoFault;
+              *data8 = picr;
+              break;
           case TSDEV_PIC2_ISR:
               // PIC2 not implemnted... just return 0
-              *(uint8_t*)data = 0x00;
-              return NoFault;
+              *data8 = 0x00;
+              break;
           case TSDEV_TMR0_DATA:
-            pitimer.counter0.read(data);
+            pitimer.counter0.read(data8);
             return NoFault;
           case TSDEV_TMR1_DATA:
-            pitimer.counter1.read(data);
+            pitimer.counter1.read(data8);
             return NoFault;
           case TSDEV_TMR2_DATA:
-            pitimer.counter2.read(data);
-            return NoFault;
+            pitimer.counter2.read(data8);
+            break;
           case TSDEV_RTC_DATA:
-            rtc.readData(data);
-            return NoFault;
+            rtc.readData(data8);
+            break;
           case TSDEV_CTRL_PORTB:
             if (pitimer.counter2.outputHigh())
-                *data = PORTB_SPKR_HIGH;
+                *data8 = PORTB_SPKR_HIGH;
             else
-                *data = 0x00;
-            return NoFault;
+                *data8 = 0x00;
+            break;
           default:
-            panic("I/O Read - va%#x size %d\n", req->vaddr, req->size);
+            panic("I/O Read - va%#x size %d\n", pkt.addr, pkt.size);
         }
-      case sizeof(uint16_t):
-      case sizeof(uint32_t):
-        panic("I/O Read - invalid size - va %#x size %d\n",
-              req->vaddr, req->size);
-
-      case sizeof(uint64_t):
-       switch(daddr) {
-          case TSDEV_PIC1_ISR:
-              // !!! If this is modified 8bit case needs to be too
-              // Pal code has to do a 64 bit physical read because there is
-              // no load physical byte instruction
-              *(uint64_t*)data = (uint64_t)picr;
-              return NoFault;
-          default:
-              panic("I/O Read - invalid size - va %#x size %d\n",
-                    req->vaddr, req->size);
-       }
-
-      default:
-        panic("I/O Read - invalid size - va %#x size %d\n",
-              req->vaddr, req->size);
+    } else if (pkt.size == sizeof(uint64_t)) {
+        if (!pkt.data) {
+            data64 = new uint64_t;
+            pkt.data = (uint8_t*)data64;
+        } else
+            data8 = (uint64_t*)pkt.data;
+
+        if (daddr == TSDEV_PIC1_ISR)
+            data64 = (uint64_t)picr;
+        else
+           panic("I/O Read - invalid addr - va %#x size %d\n",
+                   req.addr, req.size);
+    } else {
+       panic("I/O Read - invalid size - va %#x size %d\n", req.addr, req.size);
     }
-    panic("I/O Read - va%#x size %d\n", req->vaddr, req->size);
-
-    return NoFault;
+    pkt.result = Success;
+    return pioDelay;
 }
 
-Fault
-TsunamiIO::write(MemReqPtr &req, const uint8_t *data)
+Tick
+TsunamiIO::write(Packet &pkt)
 {
+    pkt.time = curTick + pioDelay;
+
+    assert(pkt.result == Unknown);
+    assert(pkt.addr >= pioAddr && pkt.addr < pioAddr + pioSize);
+    Addr daddr = pkt.addr - pioAddr;
+    uint8_t val = *pkt.data;
 
 #if TRACING_ON
-    uint8_t dt = *(uint8_t*)data;
-    uint64_t dt64 = dt;
+    uint64_t dt64 = val;
 #endif
 
     DPRINTF(Tsunami, "io write - va=%#x size=%d IOPort=%#x Data=%#x\n",
             req->vaddr, req->size, req->vaddr & 0xfff, dt64);
 
-    Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask));
+    assert(pkt.size == sizeof(uint8_t));
 
-    switch(req->size) {
-      case sizeof(uint8_t):
-        switch(daddr) {
-          case TSDEV_PIC1_MASK:
-            mask1 = ~(*(uint8_t*)data);
-            if ((picr & mask1) && !picInterrupting) {
-                picInterrupting = true;
-                tsunami->cchip->postDRIR(55);
-                DPRINTF(Tsunami, "posting pic interrupt to cchip\n");
-            }
-            if ((!(picr & mask1)) && picInterrupting) {
-                picInterrupting = false;
-                tsunami->cchip->clearDRIR(55);
-                DPRINTF(Tsunami, "clearing pic interrupt\n");
-            }
-            return NoFault;
-          case TSDEV_PIC2_MASK:
-            mask2 = *(uint8_t*)data;
-            //PIC2 Not implemented to interrupt
-            return NoFault;
-          case TSDEV_PIC1_ACK:
-            // clear the interrupt on the PIC
-            picr &= ~(1 << (*(uint8_t*)data & 0xF));
-            if (!(picr & mask1))
-                tsunami->cchip->clearDRIR(55);
-            return NoFault;
-          case TSDEV_DMA1_CMND:
-            return NoFault;
-          case TSDEV_DMA2_CMND:
-            return NoFault;
-          case TSDEV_DMA1_MMASK:
-            return NoFault;
-          case TSDEV_DMA2_MMASK:
-            return NoFault;
-          case TSDEV_PIC2_ACK:
-            return NoFault;
-          case TSDEV_DMA1_RESET:
-            return NoFault;
-          case TSDEV_DMA2_RESET:
-            return NoFault;
-          case TSDEV_DMA1_MODE:
-            mode1 = *(uint8_t*)data;
-            return NoFault;
-          case TSDEV_DMA2_MODE:
-            mode2 = *(uint8_t*)data;
-            return NoFault;
-          case TSDEV_DMA1_MASK:
-          case TSDEV_DMA2_MASK:
-            return NoFault;
-          case TSDEV_TMR0_DATA:
-            pitimer.counter0.write(data);
-            return NoFault;
-          case TSDEV_TMR1_DATA:
-            pitimer.counter1.write(data);
-            return NoFault;
-          case TSDEV_TMR2_DATA:
-            pitimer.counter2.write(data);
-            return NoFault;
-          case TSDEV_TMR_CTRL:
-            pitimer.writeControl(data);
-            return NoFault;
-          case TSDEV_RTC_ADDR:
-            rtc.writeAddr(data);
-            return NoFault;
-          case TSDEV_KBD:
-            return NoFault;
-          case TSDEV_RTC_DATA:
-            rtc.writeData(data);
-            return NoFault;
-          case TSDEV_CTRL_PORTB:
-            // System Control Port B not implemented
-            return NoFault;
-          default:
-            panic("I/O Write - va%#x size %d data %#x\n", req->vaddr, req->size, (int)*data);
+    switch(daddr) {
+      case TSDEV_PIC1_MASK:
+        mask1 = ~(val);
+        if ((picr & mask1) && !picInterrupting) {
+            picInterrupting = true;
+            tsunami->cchip->postDRIR(55);
+            DPRINTF(Tsunami, "posting pic interrupt to cchip\n");
         }
-      case sizeof(uint16_t):
-      case sizeof(uint32_t):
-      case sizeof(uint64_t):
+        if ((!(picr & mask1)) && picInterrupting) {
+            picInterrupting = false;
+            tsunami->cchip->clearDRIR(55);
+            DPRINTF(Tsunami, "clearing pic interrupt\n");
+        }
+        break;
+      case TSDEV_PIC2_MASK:
+        mask2 = val;
+        //PIC2 Not implemented to interrupt
+        break;
+      case TSDEV_PIC1_ACK:
+        // clear the interrupt on the PIC
+        picr &= ~(1 << (val & 0xF));
+        if (!(picr & mask1))
+            tsunami->cchip->clearDRIR(55);
+        break;
+      case TSDEV_DMA1_MODE:
+        mode1 = val;
+        break;
+      case TSDEV_DMA2_MODE:
+        mode2 = val;
+        break;
+      case TSDEV_TMR0_DATA:
+        pitimer.counter0.write(val);
+        break;
+      case TSDEV_TMR1_DATA:
+        pitimer.counter1.write(val);
+        break;
+      case TSDEV_TMR2_DATA:
+        pitimer.counter2.write(val);
+        break;
+      case TSDEV_TMR_CTRL:
+        pitimer.writeControl(val);
+        break;
+      case TSDEV_RTC_ADDR:
+        rtc.writeAddr(val);
+        break;
+      case TSDEV_RTC_DATA:
+        rtc.writeData(val);
+        break;
+      case TSDEV_KBD:
+      case TSDEV_DMA1_CMND:
+      case TSDEV_DMA2_CMND:
+      case TSDEV_DMA1_MMASK:
+      case TSDEV_DMA2_MMASK:
+      case TSDEV_PIC2_ACK:
+      case TSDEV_DMA1_RESET:
+      case TSDEV_DMA2_RESET:
+      case TSDEV_DMA1_MASK:
+      case TSDEV_DMA2_MASK:
+      case TSDEV_CTRL_PORTB:
+        break;
       default:
-        panic("I/O Write - invalid size - va %#x size %d\n",
-              req->vaddr, req->size);
+        panic("I/O Write - va%#x size %d data %#x\n", pkt.addr, pkt.size, val);
     }
 
-
-    return NoFault;
+    pkt.result = Success;
+    return pioDelay;
 }
 
 void
@@ -647,12 +625,6 @@ TsunamiIO::clearPIC(uint8_t bitvector)
     }
 }
 
-Tick
-TsunamiIO::cacheAccess(MemReqPtr &req)
-{
-    return curTick + pioLatency;
-}
-
 void
 TsunamiIO::serialize(ostream &os)
 {
@@ -687,34 +659,41 @@ TsunamiIO::unserialize(Checkpoint *cp, const string &section)
 
 BEGIN_DECLARE_SIM_OBJECT_PARAMS(TsunamiIO)
 
-    SimObjectParam<Tsunami *> tsunami;
-    Param<time_t> time;
-    SimObjectParam<MemoryController *> mmu;
-    Param<Addr> addr;
-    SimObjectParam<Bus*> pio_bus;
+    Param<Addr> pio_addr;
     Param<Tick> pio_latency;
-    SimObjectParam<HierParams *> hier;
     Param<Tick> frequency;
+    SimObjectParam<Platform *> platform;
+    SimObjectParam<System *> system;
+    Param<time_t> time;
+    SimObjectParam<Tsunami *> tsunami;
 
 END_DECLARE_SIM_OBJECT_PARAMS(TsunamiIO)
 
 BEGIN_INIT_SIM_OBJECT_PARAMS(TsunamiIO)
 
-    INIT_PARAM(tsunami, "Tsunami"),
+    INIT_PARAM(frequency, "clock interrupt frequency"),
+    INIT_PARAM(pio_addr, "Device Address"),
+    INIT_PARAM(pio_latency, "Programmed IO latency"),
+    INIT_PARAM(pio_size, "Size of address range"),
+    INIT_PARAM(platform, "platform"),
+    INIT_PARAM(system, "system object"),
     INIT_PARAM(time, "System time to use (0 for actual time"),
-    INIT_PARAM(mmu, "Memory Controller"),
-    INIT_PARAM(addr, "Device Address"),
-    INIT_PARAM(pio_bus, "The IO Bus to attach to"),
-    INIT_PARAM_DFLT(pio_latency, "Programmed IO latency in bus cycles", 1),
-    INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams),
-    INIT_PARAM(frequency, "clock interrupt frequency")
+    INIT_PARAM(tsunami, "Tsunami")
 
 END_INIT_SIM_OBJECT_PARAMS(TsunamiIO)
 
 CREATE_SIM_OBJECT(TsunamiIO)
 {
-    return new TsunamiIO(getInstanceName(), tsunami, time,  addr, mmu, hier,
-                         pio_bus, pio_latency, frequency);
+    TsunamiIO::Params *p = new TsunamiIO::Params;
+    p->frequency = frequency;
+    p->name = getInstanceName();
+    p->pio_addr = pio_addr;
+    p->pio_delay = pio_latency;
+    p->platform = platform;
+    p->system = system;
+    p->init_time = time;
+    p->tsunami = tsunami;
+    return new TsunamiIO(p);
 }
 
 REGISTER_SIM_OBJECT("TsunamiIO", TsunamiIO)
diff --git a/dev/tsunami_io.hh b/dev/tsunami_io.hh
index b024ecd14..defb850ce 100644
--- a/dev/tsunami_io.hh
+++ b/dev/tsunami_io.hh
@@ -38,8 +38,6 @@
 #include "dev/tsunami.hh"
 #include "sim/eventq.hh"
 
-class MemoryController;
-
 /**
  * Tsunami I/O device is a catch all for all the south bridge stuff we care
  * to implement.
@@ -47,12 +45,6 @@ class MemoryController;
 class TsunamiIO : public PioDevice
 {
   private:
-    /** The base address of this device */
-    Addr addr;
-
-    /** The size of mappad from the above address */
-    static const Addr size = 0xff;
-
     struct tm tm;
 
   protected:
@@ -120,10 +112,10 @@ class TsunamiIO : public PioDevice
         void set_time(time_t t);
 
         /** RTC address port: write address of RTC RAM data to access */
-        void writeAddr(const uint8_t *data);
+        void writeAddr(const uint8_t data);
 
         /** RTC write data */
-        void writeData(const uint8_t *data);
+        void writeData(const uint8_t data);
 
         /** RTC read data */
         void readData(uint8_t *data);
@@ -218,7 +210,7 @@ class TsunamiIO : public PioDevice
             void read(uint8_t *data);
 
             /** Write a count byte */
-            void write(const uint8_t *data);
+            void write(const uint8_t data);
 
             /** Is the output high? */
             bool outputHigh();
@@ -254,7 +246,7 @@ class TsunamiIO : public PioDevice
         PITimer(const std::string &name);
 
         /** Write control word */
-        void writeControl(const uint8_t* data);
+        void writeControl(const uint8_t data);
 
         /**
          * Serialize this object to the given output stream.
@@ -289,8 +281,6 @@ class TsunamiIO : public PioDevice
     /** Is the pic interrupting right now or not. */
     bool picInterrupting;
 
-    Tick clockInterval;
-
     /** A pointer to the Tsunami device which be belong to */
     Tsunami *tsunami;
 
@@ -312,33 +302,24 @@ class TsunamiIO : public PioDevice
      */
     Tick frequency() const;
 
+    struct Params : public BasicPioDevice::Params
+    {
+        Tick frequency;
+        Tsunami *tsunami;
+        time_t init_time;
+    };
+  protected:
+    const Params *params() const { return (const Params*)_params; }
+
+  public:
     /**
      * Initialize all the data for devices supported by Tsunami I/O.
-     * @param name name of this device.
-     * @param t pointer back to the Tsunami object that we belong to.
-     * @param init_time Time (as in seconds since 1970) to set RTC to.
-     * @param a address we are mapped at.
-     * @param mmu pointer to the memory controller that sends us events.
+     * @param p pointer to Params struct
      */
-    TsunamiIO(const std::string &name, Tsunami *t, time_t init_time,
-              Addr a, MemoryController *mmu, HierParams *hier, Bus *pio_bus,
-              Tick pio_latency, Tick ci);
+    TsunamiIO(Params *p);
 
-    /**
-      * Process a read to one of the devices we are emulating.
-      * @param req Contains the address to read from.
-      * @param data A pointer to write the read data to.
-      * @return The fault condition of the access.
-      */
-    virtual Fault read(MemReqPtr &req, uint8_t *data);
-
-    /**
-      * Process a write to one of the devices we emulate.
-      * @param req Contains the address to write to.
-      * @param data The data to write.
-      * @return The fault condition of the access.
-      */
-    virtual Fault write(MemReqPtr &req, const uint8_t *data);
+    virtual Fault read(Packet &pkt);
+    virtual Fault write(Packet &pkt);
 
     /**
      * Post an PIC interrupt to the CPU via the CChip
@@ -365,7 +346,6 @@ class TsunamiIO : public PioDevice
      */
     virtual void unserialize(Checkpoint *cp, const std::string &section);
 
-    Tick cacheAccess(MemReqPtr &req);
 };
 
 #endif // __DEV_TSUNAMI_IO_HH__
diff --git a/dev/tsunami_pchip.cc b/dev/tsunami_pchip.cc
index 202076754..239d12ee9 100644
--- a/dev/tsunami_pchip.cc
+++ b/dev/tsunami_pchip.cc
@@ -51,12 +51,10 @@ using namespace std;
 //Should this be AlphaISA?
 using namespace TheISA;
 
-TsunamiPChip::TsunamiPChip(const string &name, Tsunami *t, Addr a,
-                           MemoryController *mmu, HierParams *hier,
-                           Bus *pio_bus, Tick pio_latency)
-    : PioDevice(name, t), addr(a), tsunami(t)
+TsunamiPChip::TsunamiPChip(Params *p)
+: BasicPioDevice(p),
 {
-    mmu->add_child(this, RangeSize(addr, size));
+    pioSize = 0xfff;
 
     for (int i = 0; i < 4; i++) {
         wsba[i] = 0;
@@ -64,195 +62,180 @@ TsunamiPChip::TsunamiPChip(const string &name, Tsunami *t, Addr a,
         tba[i] = 0;
     }
 
-    if (pio_bus) {
-        pioInterface = newPioInterface(name + ".pio", hier, pio_bus, this,
-                                      &TsunamiPChip::cacheAccess);
-        pioInterface->addAddrRange(RangeSize(addr, size));
-        pioLatency = pio_latency * pio_bus->clockRate;
-    }
-
-
     // initialize pchip control register
     pctl = (ULL(0x1) << 20) | (ULL(0x1) << 32) | (ULL(0x2) << 36);
 
     //Set back pointer in tsunami
-    tsunami->pchip = this;
+    p->tsunami->pchip = this;
 }
 
-Fault
-TsunamiPChip::read(MemReqPtr &req, uint8_t *data)
+Tick
+TsunamiPChip::read(Packet &pkt)
 {
-    DPRINTF(Tsunami, "read  va=%#x size=%d\n",
-            req->vaddr, req->size);
-
-    Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask)) >> 6;
-
-    switch (req->size) {
-
-      case sizeof(uint64_t):
-          switch(daddr) {
-              case TSDEV_PC_WSBA0:
-                    *(uint64_t*)data = wsba[0];
-                    return NoFault;
-              case TSDEV_PC_WSBA1:
-                    *(uint64_t*)data = wsba[1];
-                    return NoFault;
-              case TSDEV_PC_WSBA2:
-                    *(uint64_t*)data = wsba[2];
-                    return NoFault;
-              case TSDEV_PC_WSBA3:
-                    *(uint64_t*)data = wsba[3];
-                    return NoFault;
-              case TSDEV_PC_WSM0:
-                    *(uint64_t*)data = wsm[0];
-                    return NoFault;
-              case TSDEV_PC_WSM1:
-                    *(uint64_t*)data = wsm[1];
-                    return NoFault;
-              case TSDEV_PC_WSM2:
-                    *(uint64_t*)data = wsm[2];
-                    return NoFault;
-              case TSDEV_PC_WSM3:
-                    *(uint64_t*)data = wsm[3];
-                    return NoFault;
-              case TSDEV_PC_TBA0:
-                    *(uint64_t*)data = tba[0];
-                    return NoFault;
-              case TSDEV_PC_TBA1:
-                    *(uint64_t*)data = tba[1];
-                    return NoFault;
-              case TSDEV_PC_TBA2:
-                    *(uint64_t*)data = tba[2];
-                    return NoFault;
-              case TSDEV_PC_TBA3:
-                    *(uint64_t*)data = tba[3];
-                    return NoFault;
-              case TSDEV_PC_PCTL:
-                    *(uint64_t*)data = pctl;
-                    return NoFault;
-              case TSDEV_PC_PLAT:
-                    panic("PC_PLAT not implemented\n");
-              case TSDEV_PC_RES:
-                    panic("PC_RES not implemented\n");
-              case TSDEV_PC_PERROR:
-                    *(uint64_t*)data = 0x00;
-                    return NoFault;
-              case TSDEV_PC_PERRMASK:
-                    *(uint64_t*)data = 0x00;
-                    return NoFault;
-              case TSDEV_PC_PERRSET:
-                    panic("PC_PERRSET not implemented\n");
-              case TSDEV_PC_TLBIV:
-                    panic("PC_TLBIV not implemented\n");
-              case TSDEV_PC_TLBIA:
-                    *(uint64_t*)data = 0x00; // shouldn't be readable, but linux
-                    return NoFault;
-              case TSDEV_PC_PMONCTL:
-                    panic("PC_PMONCTL not implemented\n");
-              case TSDEV_PC_PMONCNT:
-                    panic("PC_PMONCTN not implemented\n");
-              default:
-                  panic("Default in PChip Read reached reading 0x%x\n", daddr);
-
-           } // uint64_t
-
-      break;
-      case sizeof(uint32_t):
-      case sizeof(uint16_t):
-      case sizeof(uint8_t):
+    assert(pkt.result == Unknown);
+    assert(pkt.addr >= pioAddr && pkt.addr < pioAddr + pioSize);
+
+    pkt.time = curTick + pioDelay;
+    Addr daddr = pkt.addr - pioAddr;
+
+    uint64_t *data64;
+
+    if (!pkt.data) {
+        data64 = new uint64_t;
+        pkt.data = (uint8_t*)data64;
+    } else
+        data64 = (uint64_t*)pkt.data;
+
+    DPRINTF(Tsunami, "read  va=%#x size=%d\n", pkt.addr, pkt.size);
+
+    switch(daddr) {
+      case TSDEV_PC_WSBA0:
+            *data64 = wsba[0];
+            break;
+      case TSDEV_PC_WSBA1:
+            *data64 = wsba[1];
+            break;
+      case TSDEV_PC_WSBA2:
+            *data64 = wsba[2];
+            break;
+      case TSDEV_PC_WSBA3:
+            *data64 = wsba[3];
+            break;
+      case TSDEV_PC_WSM0:
+            *data64 = wsm[0];
+            break;
+      case TSDEV_PC_WSM1:
+            *data64 = wsm[1];
+            break;
+      case TSDEV_PC_WSM2:
+            *data64 = wsm[2];
+            break;
+      case TSDEV_PC_WSM3:
+            *data64 = wsm[3];
+            break;
+      case TSDEV_PC_TBA0:
+            *data64 = tba[0];
+            break;
+      case TSDEV_PC_TBA1:
+            *data64 = tba[1];
+            break;
+      case TSDEV_PC_TBA2:
+            *data64 = tba[2];
+            break;
+      case Tbreak;
+            *data64 = tba[3];
+            break;
+      case TSDEV_PC_PCTL:
+            *data64 = pctl;
+            break;
+      case TSDEV_PC_PLAT:
+            panic("PC_PLAT not implemented\n");
+      case TSDEV_PC_RES:
+            panic("PC_RES not implemented\n");
+      case TSDEV_PC_PERROR:
+            *data64 = 0x00;
+            break;
+      case TSDEV_PC_PERRMASK:
+            *data64 = 0x00;
+            break;
+      case TSDEV_PC_PERRSET:
+            panic("PC_PERRSET not implemented\n");
+      case TSDEV_PC_TLBIV:
+            panic("PC_TLBIV not implemented\n");
+      case TSDEV_PC_TLBIA:
+            *data64 = 0x00; // shouldn't be readable, but linux
+            break;
+      case TSDEV_PC_PMONCTL:
+            panic("PC_PMONCTL not implemented\n");
+      case TSDEV_PC_PMONCNT:
+            panic("PC_PMONCTN not implemented\n");
       default:
-        panic("invalid access size(?) for tsunami register!\n\n");
+          panic("Default in PChip Read reached reading 0x%x\n", daddr);
     }
-    DPRINTFN("Tsunami PChip ERROR: read  daddr=%#x size=%d\n", daddr, req->size);
+    pkt.result = Success;
+    return pioDelay;
 
-    return NoFault;
 }
 
 Fault
-TsunamiPChip::write(MemReqPtr &req, const uint8_t *data)
+TsunamiPChip::write(Packet &pkt)
 {
-    DPRINTF(Tsunami, "write - va=%#x size=%d \n",
-            req->vaddr, req->size);
-
-    Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask)) >> 6;
-
-    switch (req->size) {
-
-      case sizeof(uint64_t):
-          switch(daddr) {
-              case TSDEV_PC_WSBA0:
-                    wsba[0] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_WSBA1:
-                    wsba[1] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_WSBA2:
-                    wsba[2] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_WSBA3:
-                    wsba[3] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_WSM0:
-                    wsm[0] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_WSM1:
-                    wsm[1] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_WSM2:
-                    wsm[2] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_WSM3:
-                    wsm[3] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_TBA0:
-                    tba[0] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_TBA1:
-                    tba[1] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_TBA2:
-                    tba[2] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_TBA3:
-                    tba[3] = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_PCTL:
-                    pctl = *(uint64_t*)data;
-                    return NoFault;
-              case TSDEV_PC_PLAT:
-                    panic("PC_PLAT not implemented\n");
-              case TSDEV_PC_RES:
-                    panic("PC_RES not implemented\n");
-              case TSDEV_PC_PERROR:
-                    return NoFault;
-              case TSDEV_PC_PERRMASK:
-                    panic("PC_PERRMASK not implemented\n");
-              case TSDEV_PC_PERRSET:
-                    panic("PC_PERRSET not implemented\n");
-              case TSDEV_PC_TLBIV:
-                    panic("PC_TLBIV not implemented\n");
-              case TSDEV_PC_TLBIA:
-                    return NoFault; // value ignored, supposted to invalidate SG TLB
-              case TSDEV_PC_PMONCTL:
-                    panic("PC_PMONCTL not implemented\n");
-              case TSDEV_PC_PMONCNT:
-                    panic("PC_PMONCTN not implemented\n");
-              default:
-                  panic("Default in PChip Read reached reading 0x%x\n", daddr);
-
-           } // uint64_t
-
-      break;
-      case sizeof(uint32_t):
-      case sizeof(uint16_t):
-      case sizeof(uint8_t):
-      default:
-        panic("invalid access size(?) for tsunami register!\n\n");
-    }
-
-    DPRINTFN("Tsunami ERROR: write daddr=%#x size=%d\n", daddr, req->size);
-
-    return NoFault;
+    pkt.time = curTick + pioDelay;
+
+    assert(pkt.result == Unknown);
+    assert(pkt.addr >= pioAddr && pkt.addr < pioAddr + pioSize);
+    Addr daddr = pkt.addr - pioAddr;
+
+    uint64_t val = *(uint64_t *)pkt.data;
+    assert(pkt.size == sizeof(uint64_t));
+
+    DPRINTF(Tsunami, "write - va=%#x size=%d \n", pkt.addr, pkt.size);
+
+    switch(daddr) {
+        case TSDEV_PC_WSBA0:
+              wsba[0] = data64;
+              break;
+        case TSDEV_PC_WSBA1:
+              wsba[1] = data64;
+              break;
+        case TSDEV_PC_WSBA2:
+              wsba[2] = data64;
+              break;
+        case TSDEV_PC_WSBA3:
+              wsba[3] = data64;
+              break;
+        case TSDEV_PC_WSM0:
+              wsm[0] = data64;
+              break;
+        case TSDEV_PC_WSM1:
+              wsm[1] = data64;
+              break;
+        case TSDEV_PC_WSM2:
+              wsm[2] = data64;
+              break;
+        case TSDEV_PC_WSM3:
+              wsm[3] = data64;
+              break;
+        case TSDEV_PC_TBA0:
+              tba[0] = data64;
+              break;
+        case TSDEV_PC_TBA1:
+              tba[1] = data64;
+              break;
+        case TSDEV_PC_TBA2:
+              tba[2] = data64;
+              break;
+        case TSDEV_PC_TBA3:
+              tba[3] = data64;
+              break;
+        case TSDEV_PC_PCTL:
+              pctl = data64;
+              break;
+        case TSDEV_PC_PLAT:
+              panic("PC_PLAT not implemented\n");
+        case TSDEV_PC_RES:
+              panic("PC_RES not implemented\n");
+        case TSDEV_PC_PERROR:
+              break;
+        case TSDEV_PC_PERRMASK:
+              panic("PC_PERRMASK not implemented\n");
+        case TSDEV_PC_PERRSET:
+              panic("PC_PERRSET not implemented\n");
+        case TSDEV_PC_TLBIV:
+              panic("PC_TLBIV not implemented\n");
+        case TSDEV_PC_TLBIA:
+              break; // value ignored, supposted to invalidate SG TLB
+        case TSDEV_PC_PMONCTL:
+              panic("PC_PMONCTL not implemented\n");
+        case TSDEV_PC_PMONCNT:
+              panic("PC_PMONCTN not implemented\n");
+        default:
+            panic("Default in PChip Read reached reading 0x%x\n", daddr);
+
+    } // uint64_t
+
+    pkt.result = Success;
+    return pioDelay;
 }
 
 #define DMA_ADDR_MASK ULL(0x3ffffffff)
@@ -312,10 +295,7 @@ TsunamiPChip::translatePciToDma(Addr busAddr)
                     baMask = (wsm[i] & (ULL(0xfff) << 20)) | (ULL(0x7f) << 13);
                     pteAddr = (tba[i] & tbaMask) | ((busAddr & baMask) >> 10);
 
-                    memcpy((void *)&pteEntry,
-                           tsunami->system->
-                           physmem->dma_addr(pteAddr, sizeof(uint64_t)),
-                           sizeof(uint64_t));
+                    pioPort->readBlob(&pteEntry, pteAddr, sizeof(uint64_t));
 
                     dmaAddr = ((pteEntry & ~ULL(0x1)) << 12) | (busAddr & ULL(0x1fff));
 
@@ -360,30 +340,34 @@ TsunamiPChip::cacheAccess(MemReqPtr &req)
 
 BEGIN_DECLARE_SIM_OBJECT_PARAMS(TsunamiPChip)
 
-    SimObjectParam<Tsunami *> tsunami;
-    SimObjectParam<MemoryController *> mmu;
-    Param<Addr> addr;
-    SimObjectParam<Bus*> pio_bus;
+    Param<Addr> pio_addr;
     Param<Tick> pio_latency;
-    SimObjectParam<HierParams *> hier;
+    SimObjectParam<Platform *> platform;
+    SimObjectParam<System *> system;
+    SimObjectParam<Tsunami *> tsunami;
 
 END_DECLARE_SIM_OBJECT_PARAMS(TsunamiPChip)
 
 BEGIN_INIT_SIM_OBJECT_PARAMS(TsunamiPChip)
 
-    INIT_PARAM(tsunami, "Tsunami"),
-    INIT_PARAM(mmu, "Memory Controller"),
-    INIT_PARAM(addr, "Device Address"),
-    INIT_PARAM_DFLT(pio_bus, "The IO Bus to attach to", NULL),
-    INIT_PARAM_DFLT(pio_latency, "Programmed IO latency in bus cycles", 1),
-    INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams)
+    INIT_PARAM(pio_addr, "Device Address"),
+    INIT_PARAM(pio_latency, "Programmed IO latency"),
+    INIT_PARAM(platform, "platform"),
+    INIT_PARAM(system, "system object"),
+    INIT_PARAM(tsunami, "Tsunami")
 
 END_INIT_SIM_OBJECT_PARAMS(TsunamiPChip)
 
 CREATE_SIM_OBJECT(TsunamiPChip)
 {
-    return new TsunamiPChip(getInstanceName(), tsunami, addr, mmu, hier,
-                            pio_bus, pio_latency);
+    TsunamiPChip::Params *p = new TsunamiPChip::Params;
+    p->name = getInstanceName();
+    p->pio_addr = pio_addr;
+    p->pio_delay = pio_latency;
+    p->platform = platform;
+    p->system = system;
+    p->tsunami = tsunami;
+    return new TsunamiPChip(p);
 }
 
 REGISTER_SIM_OBJECT("TsunamiPChip", TsunamiPChip)
diff --git a/dev/tsunami_pchip.hh b/dev/tsunami_pchip.hh
index c1d95431b..796d38503 100644
--- a/dev/tsunami_pchip.hh
+++ b/dev/tsunami_pchip.hh
@@ -37,28 +37,12 @@
 #include "base/range.hh"
 #include "dev/io_device.hh"
 
-class MemoryController;
-
 /**
  * A very simple implementation of the Tsunami PCI interface chips.
  */
-class TsunamiPChip : public PioDevice
+class TsunamiPChip : public BasicPioDevice
 {
-  private:
-    /** The base address of this device */
-    Addr addr;
-
-    /** The size of mappad from the above address */
-    static const Addr size = 0xfff;
-
   protected:
-    /**
-     * pointer to the tsunami object.
-     * This is our access to all the other tsunami
-     * devices.
-     */
-    Tsunami *tsunami;
-
     /** Pchip control register */
     uint64_t pctl;
 
@@ -72,18 +56,19 @@ class TsunamiPChip : public PioDevice
     uint64_t tba[4];
 
   public:
+    struct Params : public BasicPioDevice::Params
+    {
+        Tsunami *tsunami;
+    };
+  protected:
+    const Params *params() const { return (const Params*)_params; }
+
+  public:
     /**
      * Register the PChip with the mmu and init all wsba, wsm, and tba to 0
-     * @param name the name of thes device
-     * @param t a pointer to the tsunami device
-     * @param a the address which we respond to
-     * @param mmu the mmu we are to register with
-     * @param hier object to store parameters universal the device hierarchy
-     * @param bus The bus that this device is attached to
+     * @param p pointer to the parameters struct
      */
-    TsunamiPChip(const std::string &name, Tsunami *t, Addr a,
-                 MemoryController *mmu, HierParams *hier, Bus *pio_bus,
-                 Tick pio_latency);
+    TsunamiPChip(Params *p);
 
     /**
      * Translate a PCI bus address to a memory address for DMA.
@@ -93,21 +78,8 @@ class TsunamiPChip : public PioDevice
      */
     Addr translatePciToDma(Addr busAddr);
 
-     /**
-      * Process a read to the PChip.
-      * @param req Contains the address to read from.
-      * @param data A pointer to write the read data to.
-      * @return The fault condition of the access.
-      */
-    virtual Fault read(MemReqPtr &req, uint8_t *data);
-
-    /**
-      * Process a write to the PChip.
-      * @param req Contains the address to write to.
-      * @param data The data to write.
-      * @return The fault condition of the access.
-      */
-    virtual Fault write(MemReqPtr &req, const uint8_t *data);
+    virtual Fault read(Packet &pkt);
+    virtual Fault write(Packet &pkt);
 
     /**
      * Serialize this object to the given output stream.
@@ -121,13 +93,6 @@ class TsunamiPChip : public PioDevice
      * @param section The section name of this object
      */
     virtual void unserialize(Checkpoint *cp, const std::string &section);
-
-    /**
-     * Return how long this access will take.
-     * @param req the memory request to calcuate
-     * @return Tick when the request is done
-     */
-    Tick cacheAccess(MemReqPtr &req);
 };
 
 #endif // __TSUNAMI_PCHIP_HH__