Merge zizzer.eecs.umich.edu:/bk/newmem/

into  zeep.eecs.umich.edu:/home/gblack/m5/newmemmemops

src/SConscript:
    SCCS merged

--HG--
extra : convert_revision : f130c8a2d33f58d857e5d5a02bb9698c1bceb23b

2 files changed, 60 insertions, 109 deletions

diff --git a/src/dev/isa_fake.cc b/src/dev/isa_fake.cc
index ccc9a1f7c..103fdd8ce 100644
--- a/src/dev/isa_fake.cc
+++ b/src/dev/isa_fake.cc
@@ -25,18 +25,13 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * Authors: Miguel Serrano
- *          Ali Saidi
+ * Authors: Ali Saidi
  */
 
 /** @file
  * Isa Fake Device implementation
  */
 
-#include <deque>
-#include <string>
-#include <vector>
-
 #include "base/trace.hh"
 #include "dev/isa_fake.hh"
 #include "mem/packet.hh"
@@ -49,74 +44,67 @@ using namespace std;
 IsaFake::IsaFake(Params *p)
     : BasicPioDevice(p)
 {
-    pioSize = p->pio_size;
-}
-
-Tick
-IsaFake::read(PacketPtr pkt)
-{
-    assert(pkt->result == Packet::Unknown);
-    assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
-
-    DPRINTF(Tsunami, "read  va=%#x size=%d\n", pkt->getAddr(), pkt->getSize());
-
-    switch (pkt->getSize()) {
-      case sizeof(uint64_t):
-         pkt->set(0xFFFFFFFFFFFFFFFFULL);
-         break;
-      case sizeof(uint32_t):
-         pkt->set((uint32_t)0xFFFFFFFF);
-         break;
-      case sizeof(uint16_t):
-         pkt->set((uint16_t)0xFFFF);
-         break;
-      case sizeof(uint8_t):
-         pkt->set((uint8_t)0xFF);
-         break;
-      default:
-        panic("invalid access size(?) for PCI configspace!\n");
-    }
-    pkt->result = Packet::Success;
-    return pioDelay;
-}
-
-Tick
-IsaFake::write(PacketPtr pkt)
-{
-    DPRINTF(Tsunami, "write - va=%#x size=%d \n", pkt->getAddr(), pkt->getSize());
-    pkt->result = Packet::Success;
-    return pioDelay;
-}
+    if (!params()->retBadAddr)
+        pioSize = p->pio_size;
 
-BadAddr::BadAddr(Params *p)
-    : BasicPioDevice(p)
-{
+    memset(&retData, p->retData, sizeof(retData));
 }
 
 void
-BadAddr::init()
+IsaFake::init()
 {
     // Only init this device if it's connected to anything.
     if (pioPort)
         PioDevice::init();
 }
 
+
 Tick
-BadAddr::read(PacketPtr pkt)
+IsaFake::read(PacketPtr pkt)
 {
     assert(pkt->result == Packet::Unknown);
-    DPRINTF(Tsunami, "read to bad address va=%#x size=%d\n",
-            pkt->getAddr(), pkt->getSize());
-    pkt->result = Packet::BadAddress;
+
+    if (params()->retBadAddr) {
+        DPRINTF(Tsunami, "read to bad address va=%#x size=%d\n",
+                pkt->getAddr(), pkt->getSize());
+        pkt->result = Packet::BadAddress;
+    } else {
+        assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
+        DPRINTF(Tsunami, "read  va=%#x size=%d\n",
+                pkt->getAddr(), pkt->getSize());
+        switch (pkt->getSize()) {
+          case sizeof(uint64_t):
+             pkt->set(retData);
+             break;
+          case sizeof(uint32_t):
+             pkt->set((uint32_t)retData);
+             break;
+          case sizeof(uint16_t):
+             pkt->set((uint16_t)retData);
+             break;
+          case sizeof(uint8_t):
+             pkt->set((uint8_t)retData);
+             break;
+          default:
+            panic("invalid access size!\n");
+        }
+        pkt->result = Packet::Success;
+    }
     return pioDelay;
 }
 
 Tick
-BadAddr::write(PacketPtr pkt)
+IsaFake::write(PacketPtr pkt)
 {
-    DPRINTF(Tsunami, "write to bad address va=%#x size=%d \n",
-            pkt->getAddr(), pkt->getSize());
-    pkt->result = Packet::BadAddress;
+    if (params()->retBadAddr) {
+        DPRINTF(Tsunami, "write to bad address va=%#x size=%d \n",
+                pkt->getAddr(), pkt->getSize());
+        pkt->result = Packet::BadAddress;
+    } else {
+        DPRINTF(Tsunami, "write - va=%#x size=%d \n",
+                pkt->getAddr(), pkt->getSize());
+        pkt->result = Packet::Success;
+    }
     return pioDelay;
 }
 
@@ -125,6 +113,8 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake)
     Param<Addr> pio_addr;
     Param<Tick> pio_latency;
     Param<Addr> pio_size;
+    Param<bool> ret_bad_addr;
+    Param<uint8_t> ret_data;
     SimObjectParam<Platform *> platform;
     SimObjectParam<System *> system;
 
@@ -135,6 +125,8 @@ BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake)
     INIT_PARAM(pio_addr, "Device Address"),
     INIT_PARAM(pio_latency, "Programmed IO latency"),
     INIT_PARAM(pio_size, "Size of address range"),
+    INIT_PARAM(ret_bad_addr, "Return pkt status BadAddr"),
+    INIT_PARAM(ret_data, "Data to return if not bad addr"),
     INIT_PARAM(platform, "platform"),
     INIT_PARAM(system, "system object")
 
@@ -147,40 +139,11 @@ CREATE_SIM_OBJECT(IsaFake)
     p->pio_addr = pio_addr;
     p->pio_delay = pio_latency;
     p->pio_size = pio_size;
+    p->retBadAddr = ret_bad_addr;
+    p->retData = ret_data;
     p->platform = platform;
     p->system = system;
     return new IsaFake(p);
 }
 
 REGISTER_SIM_OBJECT("IsaFake", IsaFake)
-
-BEGIN_DECLARE_SIM_OBJECT_PARAMS(BadAddr)
-
-    Param<Addr> pio_addr;
-    Param<Tick> pio_latency;
-    SimObjectParam<Platform *> platform;
-    SimObjectParam<System *> system;
-
-END_DECLARE_SIM_OBJECT_PARAMS(BadAddr)
-
-BEGIN_INIT_SIM_OBJECT_PARAMS(BadAddr)
-
-    INIT_PARAM(pio_addr, "Device Address"),
-    INIT_PARAM(pio_latency, "Programmed IO latency"),
-    INIT_PARAM(platform, "platform"),
-    INIT_PARAM(system, "system object")
-
-END_INIT_SIM_OBJECT_PARAMS(BadAddr)
-
-CREATE_SIM_OBJECT(BadAddr)
-{
-    BadAddr::Params *p = new BadAddr::Params;
-    p->name = getInstanceName();
-    p->pio_addr = pio_addr;
-    p->pio_delay = pio_latency;
-    p->platform = platform;
-    p->system = system;
-    return new BadAddr(p);
-}
-
-REGISTER_SIM_OBJECT("BadAddr", BadAddr)
diff --git a/src/dev/isa_fake.hh b/src/dev/isa_fake.hh
index c781d1ba6..4c195a97f 100644
--- a/src/dev/isa_fake.hh
+++ b/src/dev/isa_fake.hh
@@ -25,8 +25,7 @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
- * Authors: Miguel Serrano
- *          Ali Saidi
+ * Authors: Ali Saidi
  */
 
 /** @file
@@ -42,10 +41,11 @@
 #include "mem/packet.hh"
 
 /**
- * IsaFake is a device that returns -1 on all reads and
- * accepts all writes. It is meant to be placed at an address range
+ * IsaFake is a device that returns, BadAddr, 1 or 0 on all reads and
+ *  rites. 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).
+ * that doesn't exist (e.g. UARTs1-3), or catch requests in the memory system
+ * that have no responders..
  */
 class IsaFake : public BasicPioDevice
 {
@@ -53,9 +53,12 @@ class IsaFake : public BasicPioDevice
     struct Params : public BasicPioDevice::Params
     {
         Addr pio_size;
+        bool retBadAddr;
+        uint8_t retData;
     };
   protected:
     const Params *params() const { return (const Params*)_params; }
+    uint64_t retData;
 
   public:
     /**
@@ -77,23 +80,8 @@ class IsaFake : public BasicPioDevice
      * @param data the data to not write.
      */
     virtual Tick write(PacketPtr pkt);
-};
 
-/**
- * BadAddr is a device that fills the packet's result field with "BadAddress".
- * @todo: Consider consolidating with IsaFake and similar classes.
- */
-class BadAddr : public BasicPioDevice
-{
-  public:
-    struct Params : public BasicPioDevice::Params
-    {
-    };
-
-    BadAddr(Params *p);
-    virtual void init();
-    virtual Tick read(PacketPtr pkt);
-    virtual Tick write(PacketPtr pkt);
+    void init();
 };
 
-#endif // __TSUNAMI_FAKE_HH__
+#endif // __ISA_FAKE_HH__