Dev: Seperate the 8254 timer from tsunami and use it in that and the PC.

3 files changed, 24 insertions, 26 deletions

diff --git a/src/dev/x86/south_bridge/i8254.cc b/src/dev/x86/south_bridge/i8254.cc
index fb6723a51..7c3501c37 100644
--- a/src/dev/x86/south_bridge/i8254.cc
+++ b/src/dev/x86/south_bridge/i8254.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004-2005 The Regents of The University of Michigan
+ * Copyright (c) 2008 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -38,21 +38,21 @@ X86ISA::I8254::read(PacketPtr pkt)
     switch(pkt->getAddr() - addrRange.start)
     {
       case 0x0:
-        warn("Reading from timer 0 counter.\n");
+        pkt->set(pit.counter0.read());
         break;
       case 0x1:
-        warn("Reading from timer 1 counter.\n");
+        pkt->set(pit.counter1.read());
         break;
       case 0x2:
-        warn("Reading from timer 2 counter.\n");
+        pkt->set(pit.counter2.read());
         break;
       case 0x3:
-        fatal("Reading from timer control word which is read only.\n");
+        pkt->set(uint8_t(-1));
         break;
       default:
         panic("Read from undefined i8254 register.\n");
     }
-    return SubDevice::read(pkt);
+    return latency;
 }
 
 Tick
@@ -62,25 +62,19 @@ X86ISA::I8254::write(PacketPtr pkt)
     switch(pkt->getAddr() - addrRange.start)
     {
       case 0x0:
-        warn("Writing to timer 0 counter.\n");
+        pit.counter0.write(pkt->get<uint8_t>());
         break;
       case 0x1:
-        warn("Writing to timer 1 counter.\n");
+        pit.counter1.write(pkt->get<uint8_t>());
         break;
       case 0x2:
-        warn("Writing to timer 2 counter.\n");
+        pit.counter2.write(pkt->get<uint8_t>());
         break;
       case 0x3:
-        processControlWord(pkt->get<uint8_t>());
-        return latency;
+        pit.writeControl(pkt->get<uint8_t>());
+        break;
       default:
         panic("Write to undefined i8254 register.\n");
     }
-    return SubDevice::write(pkt);
-}
-
-void
-X86ISA::I8254::processControlWord(uint8_t word)
-{
-    warn("I8254 received control word %x.\n", word);
+    return latency;
 }
diff --git a/src/dev/x86/south_bridge/i8254.hh b/src/dev/x86/south_bridge/i8254.hh
index f246fd8e4..519049e93 100644
--- a/src/dev/x86/south_bridge/i8254.hh
+++ b/src/dev/x86/south_bridge/i8254.hh
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004-2005 The Regents of The University of Michigan
+ * Copyright (c) 2008 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -33,24 +33,28 @@
 
 #include "arch/x86/x86_traits.hh"
 #include "base/range.hh"
+#include "dev/intel_8254_timer.hh"
 #include "dev/x86/south_bridge/sub_device.hh"
 
+#include <string>
+
 namespace X86ISA
 {
 
 class I8254 : public SubDevice
 {
   protected:
-    void processControlWord(uint8_t word);
+    Intel8254Timer pit;
 
   public:
 
-    I8254()
+    I8254(const std::string &name) : pit(name)
     {}
-    I8254(Tick _latency) : SubDevice(_latency)
+    I8254(const std::string &name, Tick _latency) :
+        SubDevice(_latency), pit(name)
     {}
-    I8254(Addr start, Addr size, Tick _latency) :
-        SubDevice(start, size, _latency)
+    I8254(const std::string &name, Addr start, Addr size, Tick _latency) :
+        SubDevice(start, size, _latency), pit(name)
     {}
 
     Tick read(PacketPtr pkt);
diff --git a/src/dev/x86/south_bridge/south_bridge.cc b/src/dev/x86/south_bridge/south_bridge.cc
index f25b3b811..cc20ea09e 100644
--- a/src/dev/x86/south_bridge/south_bridge.cc
+++ b/src/dev/x86/south_bridge/south_bridge.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2004-2005 The Regents of The University of Michigan
+ * Copyright (c) 2008 The Regents of The University of Michigan
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -68,7 +68,7 @@ SouthBridge::write(PacketPtr pkt)
 SouthBridge::SouthBridge(const Params *p) : PioDevice(p),
     pic1(0x20, 2, p->pio_latency),
     pic2(0xA0, 2, p->pio_latency),
-    pit(0x40, 4, p->pio_latency),
+    pit(p->name + ".pit", 0x40, 4, p->pio_latency),
     cmos(0x70, 2, p->pio_latency),
     speaker(0x61, 1, p->pio_latency)
 {