From 3af3610c625d57db3fa75af4f4b24ae72a76595f Mon Sep 17 00:00:00 2001
From: Ali Saidi <saidi@eecs.umich.edu>
Date: Sun, 21 Jan 2007 18:04:40 -0500
Subject: add dumb time of day device

--HG--
extra : convert_revision : 52e51ff49f7ed73065f04707ded06dc7254292c4
---
 src/dev/sparc/dtod.cc | 115 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 src/dev/sparc/dtod.cc

(limited to 'src/dev/sparc/dtod.cc')

diff --git a/src/dev/sparc/dtod.cc b/src/dev/sparc/dtod.cc
new file mode 100644
index 000000000..30c7baaf5
--- /dev/null
+++ b/src/dev/sparc/dtod.cc
@@ -0,0 +1,115 @@
+/*
+ * Copyright (c) 2004-2006 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: Ali Saidi
+ */
+
+/** @file
+ * Time of date device implementation
+ */
+#include <sys/time.h>
+
+#include <deque>
+#include <string>
+#include <vector>
+
+#include "base/trace.hh"
+#include "dev/sparc/dtod.hh"
+#include "dev/platform.hh"
+#include "mem/packet_access.hh"
+#include "mem/port.hh"
+#include "sim/builder.hh"
+#include "sim/system.hh"
+
+using namespace std;
+using namespace TheISA;
+
+DumbTOD::DumbTOD(Params *p)
+    : BasicPioDevice(p), todTime(p->init_time)
+{
+    pioSize = 0x08;
+
+    struct tm tm;
+    gmtime_r((time_t*)&todTime, &tm);
+    DPRINTFN("Real-time clock set to %s\n", asctime(&tm));
+    DPRINTFN("Real-time clock set to %d\n", todTime);
+}
+
+Tick
+DumbTOD::read(PacketPtr pkt)
+{
+    assert(pkt->result == Packet::Unknown);
+    assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
+    assert(pkt->getSize() == 8);
+
+    pkt->allocate();
+    pkt->set(todTime);
+    todTime += 1000;
+
+    pkt->result = Packet::Success;
+    return pioDelay;
+}
+
+Tick
+DumbTOD::write(PacketPtr pkt)
+{
+    panic("Dumb tod device doesn't support writes\n");
+}
+
+BEGIN_DECLARE_SIM_OBJECT_PARAMS(DumbTOD)
+
+    Param<Addr> pio_addr;
+    Param<Tick> pio_latency;
+    SimObjectParam<Platform *> platform;
+    SimObjectParam<System *> system;
+    Param<time_t> time;
+
+END_DECLARE_SIM_OBJECT_PARAMS(DumbTOD)
+
+BEGIN_INIT_SIM_OBJECT_PARAMS(DumbTOD)
+
+    INIT_PARAM(pio_addr, "Device Address"),
+    INIT_PARAM(pio_latency, "Programmed IO latency"),
+    INIT_PARAM(platform, "platform"),
+    INIT_PARAM(system, "system object"),
+    INIT_PARAM(time, "System time to use (0 for actual time")
+
+END_INIT_SIM_OBJECT_PARAMS(DumbTOD)
+
+CREATE_SIM_OBJECT(DumbTOD)
+{
+    DumbTOD::Params *p = new DumbTOD::Params;
+    p->name =getInstanceName();
+    p->pio_addr = pio_addr;
+    p->pio_delay = pio_latency;
+    p->platform = platform;
+    p->system = system;
+    p->init_time = time;
+    return new DumbTOD(p);
+}
+
+REGISTER_SIM_OBJECT("DumbTOD", DumbTOD)
-- 
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