Devices: Separate out the MC146818 RTC so both Alpha and X86 can use it.

--HG--
extra : convert_revision : 1e7f5185654ed0845678c2169c702d3b977159ed

1 files changed, 14 insertions, 83 deletions

diff --git a/src/dev/alpha/tsunami_io.hh b/src/dev/alpha/tsunami_io.hh
index 05c4ee910..3972efa48 100644
--- a/src/dev/alpha/tsunami_io.hh
+++ b/src/dev/alpha/tsunami_io.hh
@@ -39,6 +39,7 @@
 
 #include "base/range.hh"
 #include "dev/alpha/tsunami.hh"
+#include "dev/mc146818.hh"
 #include "dev/io_device.hh"
 #include "params/TsunamiIO.hh"
 #include "sim/eventq.hh"
@@ -53,91 +54,19 @@ class TsunamiIO : public BasicPioDevice
     struct tm tm;
 
   protected:
-    /** Real-Time Clock (MC146818) */
-    class RTC
-    {
-      private:
-        /** Event for RTC periodic interrupt */
-        struct RTCEvent : public Event
-        {
-            /** A pointer back to tsunami to create interrupt the processor. */
-            Tsunami* tsunami;
-            Tick interval;
-
-            RTCEvent(Tsunami* t, Tick i);
-
-            /** Schedule the RTC periodic interrupt */
-            void scheduleIntr();
-
-            /** Event process to occur at interrupt*/
-            virtual void process();
-
-            /** Event description */
-            virtual const char *description() const;
-        };
-
-      private:
-        std::string _name;
-        const std::string &name() const { return _name; }
-
-        /** RTC periodic interrupt event */
-        RTCEvent event;
-
-        /** Current RTC register address/index */
-        int addr;
-
-        /** Data for real-time clock function */
-        union {
-            uint8_t clock_data[10];
-
-            struct {
-                uint8_t sec;
-                uint8_t sec_alrm;
-                uint8_t min;
-                uint8_t min_alrm;
-                uint8_t hour;
-                uint8_t hour_alrm;
-                uint8_t wday;
-                uint8_t mday;
-                uint8_t mon;
-                uint8_t year;
-            };
-        };
-
-        /** RTC status register A */
-        uint8_t stat_regA;
-
-        /** RTC status register B */
-        uint8_t stat_regB;
 
+    class TsunamiRTC : public MC146818
+    {
       public:
-        RTC(const std::string &name, Tsunami* tsunami,
-            const TsunamiIOParams *params);
-
-        /** RTC address port: write address of RTC RAM data to access */
-        void writeAddr(const uint8_t data);
-
-        /** RTC write data */
-        void writeData(const uint8_t data);
-
-        /** RTC read data */
-        uint8_t readData();
+        Tsunami * tsunami;
+        TsunamiRTC(const std::string &n, const TsunamiIOParams *p);
 
-        /**
-          * Serialize this object to the given output stream.
-          * @param base The base name of the counter object.
-          * @param os The stream to serialize to.
-          */
-        void serialize(const std::string &base, std::ostream &os);
-
-        /**
-         * Reconstruct the state of this object from a checkpoint.
-          * @param base The base name of the counter object.
-         * @param cp The checkpoint use.
-         * @param section The section name of this object
-         */
-        void unserialize(const std::string &base, Checkpoint *cp,
-                         const std::string &section);
+      protected:
+        void handleEvent()
+        {
+            //Actually interrupt the processor here
+            tsunami->cchip->postRTC();
+        }
     };
 
     /** Programmable Interval Timer (Intel 8254) */
@@ -296,7 +225,9 @@ class TsunamiIO : public BasicPioDevice
     /** Intel 8253 Periodic Interval Timer */
     PITimer pitimer;
 
-    RTC rtc;
+    TsunamiRTC rtc;
+
+    uint8_t rtcAddr;
 
     /** The interval is set via two writes to the PIT.
      * This variable contains a flag as to how many writes have happened, and