X86: Change the I8259 from a subdevice into a real SimObject.

--HG--
rename : src/dev/x86/south_bridge/i8259.cc => src/dev/x86/i8259.cc
rename : src/dev/x86/south_bridge/i8259.hh => src/dev/x86/i8259.hh

src/dev/x86/I8259.py

@@ -0,0 +1,37 @@
+# Copyright (c) 2008 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (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: Gabe Black
+
+from m5.params import *
+from m5.proxy import *
+from Device import BasicPioDevice
+
+class I8259(BasicPioDevice):
+    type = 'I8259'
+    cxx_class='X86ISA::I8259'
+    pio_latency = Param.Latency('1ns', "Programmed IO latency in simticks")
+    master = Param.Bool(True, 'If this PIC is the master or slave')

src/dev/x86/PC.py

@@ -32,6 +32,7 @@ from m5.proxy import *
 from Cmos import Cmos
 from Device import IsaFake
 from Pci import PciConfigAll
+from I8259 import I8259
 from Platform import Platform
 from SouthBridge import SouthBridge
 from Terminal import Terminal
@@ -49,6 +50,8 @@ class PC(Platform):
 
     south_bridge = SouthBridge()
     cmos = Cmos(pio_addr=x86IOAddress(0x70))
+    pic1 = I8259(pio_addr=x86IOAddress(0x20), master=True)
+    pic2 = I8259(pio_addr=x86IOAddress(0xA0), master=False)
 
     # "Non-existant" port used for timing purposes by the linux kernel
     i_dont_exist = IsaFake(pio_addr=x86IOAddress(0x80), pio_size=1)
@@ -66,6 +69,8 @@ class PC(Platform):
     def attachIO(self, bus):
         self.south_bridge.pio = bus.port
 	self.cmos.pio = bus.port
+	self.pic1.pio = bus.port
+	self.pic2.pio = bus.port
         self.i_dont_exist.pio = bus.port
         self.behind_pci.pio = bus.port
         self.com_1.pio = bus.port

src/dev/x86/SConscript

@@ -37,3 +37,7 @@ if env['FULL_SYSTEM'] and env['TARGET_ISA'] == 'x86':
     SimObject('Cmos.py')
     Source('cmos.cc')
     TraceFlag('CMOS', 'Accesses to CMOS devices')
+
+    SimObject('I8259.py')
+    Source('i8259.cc')
+    TraceFlag('I8259', 'Accesses to the I8259 PIC devices')

src/dev/x86/i8259.cc

@@ -28,18 +28,24 @@
  * Authors: Gabe Black
  */
 
-#include "dev/x86/south_bridge/i8259.hh"
+#include "dev/x86/i8259.hh"
 
 Tick
 X86ISA::I8259::read(PacketPtr pkt)
 {
-    warn("Reading from PIC device.\n");
-    return SubDevice::read(pkt);
+    DPRINTF(I8259, "Reading from PIC device.\n");
+    return latency;
 }
 
 Tick
 X86ISA::I8259::write(PacketPtr pkt)
 {
-    warn("Writing to PIC device.\n");
-    return SubDevice::write(pkt);
+    DPRINTF(I8259, "Writing to PIC device.\n");
+    return latency;
+}
+
+X86ISA::I8259 *
+I8259Params::create()
+{
+    return new X86ISA::I8259(this);
 }

src/dev/x86/i8259.hh

@@ -28,27 +28,36 @@
  * Authors: Gabe Black
  */
 
-#ifndef __DEV_X86_SOUTH_BRIDGE_I8259_HH__
-#define __DEV_X86_SOUTH_BRIDGE_I8259_HH__
+#ifndef __DEV_X86_I8259_HH__
+#define __DEV_X86_I8259_HH__
 
-#include "arch/x86/x86_traits.hh"
-#include "base/range.hh"
-#include "dev/x86/south_bridge/sub_device.hh"
+#include "dev/io_device.hh"
+#include "params/I8259.hh"
 
 namespace X86ISA
 {
 
-class I8259 : public SubDevice
+class I8259 : public BasicPioDevice
 {
-  public:
+  protected:
+    Tick latency;
+    bool master;
 
-    I8259()
-    {}
-    I8259(Tick _latency) : SubDevice(_latency)
-    {}
-    I8259(Addr start, Addr size, Tick _latency) :
-        SubDevice(start, size, _latency)
-    {}
+  public:
+    typedef I8259Params Params;
+
+    const Params *
+    params() const
+    {
+        return dynamic_cast<const Params *>(_params);
+    }
+
+    I8259(Params * p) : BasicPioDevice(p)
+    {
+        pioSize = 2;
+        latency = p->pio_latency;
+        master = p->master;
+    }
 
     Tick read(PacketPtr pkt);
 
@@ -57,4 +66,4 @@ class I8259 : public SubDevice
 
 }; // namespace X86ISA
 
-#endif //__DEV_X86_SOUTH_BRIDGE_I8259_HH__
+#endif //__DEV_X86_I8259_HH__

src/dev/x86/south_bridge/SConscript

@@ -37,7 +37,6 @@ if env['FULL_SYSTEM'] and env['TARGET_ISA'] == 'x86':
 
     # Sub devices
     Source('i8254.cc')
-    Source('i8259.cc')
     Source('speaker.cc')
 
     TraceFlag('PCSpeaker')

src/dev/x86/south_bridge/south_bridge.cc

@@ -67,13 +67,9 @@ SouthBridge::write(PacketPtr pkt)
 }
 
 SouthBridge::SouthBridge(const Params *p) : PioDevice(p),
-    pic1(0x20, 2, p->pio_latency),
-    pic2(0xA0, 2, p->pio_latency),
     pit(this, p->name + ".pit", 0x40, 4, p->pio_latency),
     speaker(&pit, 0x61, 1, p->pio_latency)
 {
-    addDevice(pic1);
-    addDevice(pic2);
     addDevice(pit);
     addDevice(speaker);
 

src/dev/x86/south_bridge/south_bridge.hh

@@ -34,7 +34,6 @@
 #include "base/range_map.hh"
 #include "dev/io_device.hh"
 #include "dev/x86/south_bridge/i8254.hh"
-#include "dev/x86/south_bridge/i8259.hh"
 #include "dev/x86/south_bridge/speaker.hh"
 #include "dev/x86/south_bridge/sub_device.hh"
 #include "params/SouthBridge.hh"
@@ -52,10 +51,6 @@ class SouthBridge : public PioDevice
     void addDevice(X86ISA::SubDevice &);
 
   public:
-    // PICs
-    X86ISA::I8259 pic1;
-    X86ISA::I8259 pic2;
-
     // I8254 Programmable Interval Timer
     X86ISA::I8254 pit;