From 62f5d7dd3ffbbb33e8371af589eaa69280bd017a Mon Sep 17 00:00:00 2001
From: Ali Saidi <saidi@eecs.umich.edu>
Date: Wed, 29 Mar 2006 17:37:25 -0500
Subject: move stuff around so PageShift is defined before it is needed don't
 ever include a file while in a namespace start of making alpha console new
 memsystem happy Make a BasePioDevice which is what all the simple Pio devices
 will inherit from add a description of when the data pointer will have memory

arch/alpha/isa_traits.hh:
    don't ever include a file while in a namespace
dev/alpha_console.cc:
dev/alpha_console.hh:
    start of making alpha console new memsystem happy
dev/io_device.cc:
dev/io_device.hh:
    Make a BasePioDevice which is what all the simple Pio devices will inherit from
mem/packet.hh:
    add a description of when the data pointer will have memory

--HG--
extra : convert_revision : 495c0915541f9cad3eb42891e60b4ecbee7952bf
---
 dev/io_device.hh | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 50 insertions(+), 3 deletions(-)

(limited to 'dev/io_device.hh')

diff --git a/dev/io_device.hh b/dev/io_device.hh
index ba16372cc..e2565cfdc 100644
--- a/dev/io_device.hh
+++ b/dev/io_device.hh
@@ -192,20 +192,40 @@ class PioDevice : public SimObject
 
     /** Pure virtual function that the device must implement. Called when a read
      * command is recieved by the port. */
-    virtual bool read(Packet &pkt) = 0;
+    virtual Tick read(Packet &pkt) = 0;
 
     /** Pure virtual function that the device must implement. Called when a
      * write command is recieved by the port. */
-    virtual bool write(Packet &pkt) = 0;
+    virtual Tick write(Packet &pkt) = 0;
 
   public:
-    PioDevice(const std::string &name, Platform *p);
+    /** Params struct which is extended through each device based on the
+     * parameters it needs. Since we are re-writing everything, we might as well
+     * start from the bottom this time. */
+
+    struct Params
+    {
+        std::string name;
+        Platform *platform;
+    };
+  protected:
+    Params *_params;
+
+  public:
+    const Params *params() const { return _params; }
+
+    PioDevice(Params *params)
+              : SimObject(params()->name), platform(params()->platform)
+              {}
 
     virtual ~PioDevice();
 
     virtual Port *getPort(const std::string &if_name)
     {
         if (if_name == "pio")
+            if (pioPort != NULL)
+                panic("pio port already connected to.");
+            pioPort = new PioPort(this, params()->platform);
             return pioPort;
         else
             return NULL;
@@ -214,6 +234,33 @@ class PioDevice : public SimObject
 
 };
 
+class BasicPioDevice : public PioDevice
+{
+  public:
+    struct Params
+    {
+        Addr pio_addr;
+        Tick pio_delay;
+    };
+
+  protected:
+    /** Address that the device listens to. */
+    Addr pioAddr;
+
+    /** Size that the device's address range. */
+    Addr pioSize = 0;
+
+    /** Delay that the device experinces on an access. */
+    Tick pioDelay;
+
+  public:
+    BasePioDevice(Params *p)
+        : PioDevice(p), pioAddr(p->pio_addr), pioDelay(p->pioDelay)
+    {}
+
+    virtual void addressRanges(AddrRangeList &range_list, bool &owner);
+};
+
 class DmaDevice : public PioDevice
 {
   protected:
-- 
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