Add Iob and remove the fake device

configs/common/FSConfig.py:
    add an attachOnChipIO to force people to think about where "onchip" i/o should be connected in their hierarchy

--HG--
extra : convert_revision : cf79a9a00760b7daf28063f407a04bd38b956843

1 files changed, 366 insertions, 0 deletions

diff --git a/src/dev/sparc/iob.cc b/src/dev/sparc/iob.cc
new file mode 100644
index 000000000..b8caff7e9
--- /dev/null
+++ b/src/dev/sparc/iob.cc
@@ -0,0 +1,366 @@
+/*
+ * Copyright (c) 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
+ * This device implemetns the niagara I/O bridge chip. It manages incomming
+ * interrupts and posts them to the CPU when needed. It holds mask registers and
+ * various status registers for CPUs to check what interrupts are pending as
+ * well as facilities to send IPIs to other cpus.
+ */
+
+#include <cstring>
+
+#include "arch/sparc/isa_traits.hh"
+#include "base/trace.hh"
+#include "cpu/intr_control.hh"
+#include "dev/sparc/iob.hh"
+#include "dev/platform.hh"
+#include "mem/port.hh"
+#include "mem/packet_access.hh"
+#include "sim/builder.hh"
+#include "sim/system.hh"
+
+Iob::Iob(Params *p)
+    : PioDevice(p), ic(p->platform->intrctrl)
+{
+    iobManAddr = ULL(0x9800000000);
+    iobManSize = ULL(0x0100000000);
+    iobJBusAddr = ULL(0x9F00000000);
+    iobJBusSize = ULL(0x0100000000);
+    assert (params()->system->threadContexts.size() <= MaxNiagaraProcs);
+    // Get the interrupt controller from the platform
+    ic = platform->intrctrl;
+
+    for (int x = 0; x < NumDeviceIds; ++x) {
+        intMan[x].cpu = 0;
+        intMan[x].vector = 0;
+        intCtl[x].mask = true;
+        intCtl[x].pend = false;
+    }
+
+}
+
+Tick
+Iob::read(PacketPtr pkt)
+{
+    assert(pkt->result == Packet::Unknown);
+
+    if (pkt->getAddr() >= iobManAddr && pkt->getAddr() < iobManAddr + iobManSize)
+        readIob(pkt);
+    else if (pkt->getAddr() >= iobJBusAddr && pkt->getAddr() < iobJBusAddr+iobJBusSize)
+        readJBus(pkt);
+    else
+        panic("Invalid address reached Iob\n");
+
+    pkt->result = Packet::Success;
+    return pioDelay;
+}
+
+void
+Iob::readIob(PacketPtr pkt)
+{
+        Addr accessAddr = pkt->getAddr() - iobManAddr;
+        int index;
+        uint64_t data;
+
+        if (accessAddr >= IntManAddr && accessAddr < IntManAddr + IntManSize) {
+            index = (accessAddr - IntManAddr) >> 3;
+            data = intMan[index].cpu << 8 | intMan[index].vector << 0;
+            pkt->set(data);
+            return;
+        }
+
+        if (accessAddr >= IntCtlAddr && accessAddr < IntCtlAddr + IntCtlSize) {
+            index = (accessAddr - IntManAddr) >> 3;
+            data = intCtl[index].mask  ? 1 << 2 : 0 |
+                   intCtl[index].pend  ? 1 << 0 : 0;
+            pkt->set(data);
+            return;
+        }
+
+        if (accessAddr == JIntVecAddr) {
+            pkt->set(jIntVec);
+            return;
+        }
+
+        panic("Read to unknown IOB offset 0x%x\n", accessAddr);
+}
+
+void
+Iob::readJBus(PacketPtr pkt)
+{
+        Addr accessAddr = pkt->getAddr() - iobJBusAddr;
+        int cpuid = pkt->req->getCpuNum();
+        int index;
+        uint64_t data;
+
+
+
+
+        if (accessAddr >= JIntData0Addr && accessAddr < JIntData1Addr) {
+            index = (accessAddr - JIntData0Addr) >> 3;
+            pkt->set(jBusData0[index]);
+            return;
+        }
+
+        if (accessAddr >= JIntData1Addr && accessAddr < JIntDataA0Addr) {
+            index = (accessAddr - JIntData1Addr) >> 3;
+            pkt->set(jBusData1[index]);
+            return;
+        }
+
+        if (accessAddr == JIntDataA0Addr) {
+            pkt->set(jBusData0[cpuid]);
+            return;
+        }
+
+        if (accessAddr == JIntDataA1Addr) {
+            pkt->set(jBusData1[cpuid]);
+            return;
+        }
+
+        if (accessAddr >= JIntBusyAddr && accessAddr < JIntBusyAddr + JIntBusySize) {
+            index = (accessAddr - JIntBusyAddr) >> 3;
+            data = jIntBusy[index].busy ? 1 << 5 : 0 |
+                   jIntBusy[index].source;
+            pkt->set(data);
+            return;
+        }
+        if (accessAddr == JIntABusyAddr) {
+            data = jIntBusy[cpuid].busy ? 1 << 5 : 0 |
+                   jIntBusy[cpuid].source;
+            pkt->set(data);
+            return;
+        };
+
+        panic("Read to unknown JBus offset 0x%x\n", accessAddr);
+}
+
+Tick
+Iob::write(PacketPtr pkt)
+{
+    if (pkt->getAddr() >= iobManAddr && pkt->getAddr() < iobManAddr + iobManSize)
+        writeIob(pkt);
+    else if (pkt->getAddr() >= iobJBusAddr && pkt->getAddr() < iobJBusAddr+iobJBusSize)
+        writeJBus(pkt);
+    else
+        panic("Invalid address reached Iob\n");
+
+
+    pkt->result = Packet::Success;
+    return pioDelay;
+}
+
+void
+Iob::writeIob(PacketPtr pkt)
+{
+        Addr accessAddr = pkt->getAddr() - iobManAddr;
+        int index;
+        uint64_t data;
+
+        if (accessAddr >= IntManAddr && accessAddr < IntManAddr + IntManSize) {
+            index = (accessAddr - IntManAddr) >> 3;
+            data = pkt->get<uint64_t>();
+            intMan[index].cpu = bits(data,12,8);
+            intMan[index].vector = bits(data,5,0);
+            return;
+        }
+
+        if (accessAddr >= IntCtlAddr && accessAddr < IntCtlAddr + IntCtlSize) {
+            index = (accessAddr - IntManAddr) >> 3;
+            data = pkt->get<uint64_t>();
+            intCtl[index].mask = bits(data,2,2);
+            if (bits(data,1,1))
+                intCtl[index].pend = false;
+            return;
+        }
+
+        if (accessAddr == JIntVecAddr) {
+            jIntVec = bits(pkt->get<uint64_t>(), 5,0);
+            return;
+        }
+
+        if (accessAddr >= IntVecDisAddr && accessAddr < IntVecDisAddr + IntVecDisSize) {
+            Type type;
+            int cpu_id;
+            int vector;
+            index = (accessAddr - IntManAddr) >> 3;
+            data = pkt->get<uint64_t>();
+            type = (Type)bits(data,17,16);
+            cpu_id = bits(data, 12,8);
+            vector = bits(data,5,0);
+            generateIpi(type,cpu_id, vector);
+            return;
+        }
+
+        panic("Write to unknown IOB offset 0x%x\n", accessAddr);
+}
+
+void
+Iob::writeJBus(PacketPtr pkt)
+{
+        Addr accessAddr = pkt->getAddr() - iobJBusAddr;
+        int cpuid = pkt->req->getCpuNum();
+        int index;
+        uint64_t data;
+
+        if (accessAddr >= JIntBusyAddr && accessAddr < JIntBusyAddr + JIntBusySize) {
+            index = (accessAddr - JIntBusyAddr) >> 3;
+            data = pkt->get<uint64_t>();
+            jIntBusy[index].busy = bits(data,5,5);
+            return;
+        }
+        if (accessAddr == JIntABusyAddr) {
+            data = pkt->get<uint64_t>();
+            jIntBusy[cpuid].busy = bits(data,5,5);
+            return;
+        };
+
+        panic("Write to unknown JBus offset 0x%x\n", accessAddr);
+}
+
+void
+Iob::receiveDeviceInterrupt(DeviceId devid)
+{
+    assert(devid < NumDeviceIds);
+    if (intCtl[devid].mask)
+        return;
+    intCtl[devid].mask = true;
+    intCtl[devid].pend = true;
+    ic->post(intMan[devid].cpu, SparcISA::IT_INT_VEC, intMan[devid].vector);
+}
+
+
+void
+Iob::generateIpi(Type type, int cpu_id, int vector)
+{
+    // Only handle interrupts for the moment... Cpu Idle/reset/resume will be
+    // later
+    if (type != 0) {
+        warn("Ignoring IntVecDis write\n");
+        return;
+    }
+    assert(type == 0);
+    ic->post(cpu_id, SparcISA::IT_INT_VEC, vector);
+}
+
+bool
+Iob::receiveJBusInterrupt(int cpu_id, int source, uint64_t d0, uint64_t d1)
+{
+    // If we are already dealing with an interrupt for that cpu we can't deal
+    // with another one right now... come back later
+    if (jIntBusy[cpu_id].busy)
+        return false;
+
+    jIntBusy[cpu_id].busy = true;
+    jIntBusy[cpu_id].source = source;
+    jBusData0[cpu_id] = d0;
+    jBusData1[cpu_id] = d1;
+
+    ic->post(cpu_id, SparcISA::IT_INT_VEC, jIntVec);
+    return true;
+}
+
+void
+Iob::addressRanges(AddrRangeList &range_list)
+{
+    range_list.clear();
+    range_list.push_back(RangeSize(iobManAddr, iobManSize));
+    range_list.push_back(RangeSize(iobJBusAddr, iobJBusSize));
+}
+
+
+void
+Iob::serialize(std::ostream &os)
+{
+
+    SERIALIZE_SCALAR(jIntVec);
+    SERIALIZE_ARRAY(jBusData0, MaxNiagaraProcs);
+    SERIALIZE_ARRAY(jBusData1, MaxNiagaraProcs);
+    for (int x = 0; x < NumDeviceIds; x++) {
+        nameOut(os, csprintf("%s.Int%d", name(), x));
+        paramOut(os, "cpu", intMan[x].cpu);
+        paramOut(os, "vector", intMan[x].vector);
+        paramOut(os, "mask", intCtl[x].mask);
+        paramOut(os, "pend", intCtl[x].pend);
+    };
+    for (int x = 0; x < MaxNiagaraProcs; x++) {
+        nameOut(os, csprintf("%s.jIntBusy%d", name(), x));
+        paramOut(os, "busy", jIntBusy[x].busy);
+        paramOut(os, "source", jIntBusy[x].source);
+    };
+}
+
+void
+Iob::unserialize(Checkpoint *cp, const std::string &section)
+{
+    UNSERIALIZE_SCALAR(jIntVec);
+    UNSERIALIZE_ARRAY(jBusData0, MaxNiagaraProcs);
+    UNSERIALIZE_ARRAY(jBusData1, MaxNiagaraProcs);
+    for (int x = 0; x < NumDeviceIds; x++) {
+        paramIn(cp, csprintf("%s.Int%d", name(), x), "cpu", intMan[x].cpu);
+        paramIn(cp, csprintf("%s.Int%d", name(), x), "vector", intMan[x].vector);
+        paramIn(cp, csprintf("%s.Int%d", name(), x), "mask", intCtl[x].mask);
+        paramIn(cp, csprintf("%s.Int%d", name(), x), "pend", intCtl[x].pend);
+    };
+    for (int x = 0; x < MaxNiagaraProcs; x++) {
+        paramIn(cp, csprintf("%s.jIntBusy%d", name(), x), "busy", jIntBusy[x].busy);
+        paramIn(cp, csprintf("%s.jIntBusy%d", name(), x), "source", jIntBusy[x].source);
+    };
+}
+
+
+
+
+BEGIN_DECLARE_SIM_OBJECT_PARAMS(Iob)
+    Param<Tick> pio_latency;
+    SimObjectParam<Platform *> platform;
+    SimObjectParam<System *> system;
+END_DECLARE_SIM_OBJECT_PARAMS(Iob)
+
+BEGIN_INIT_SIM_OBJECT_PARAMS(Iob)
+
+    INIT_PARAM(pio_latency, "Programmed IO latency"),
+    INIT_PARAM(platform, "platform"),
+    INIT_PARAM(system, "system object")
+
+END_INIT_SIM_OBJECT_PARAMS(Iob)
+
+CREATE_SIM_OBJECT(Iob)
+{
+    Iob::Params *p = new Iob::Params;
+    p->name = getInstanceName();
+    p->pio_delay = pio_latency;
+    p->platform = platform;
+    p->system = system;
+    return new Iob(p);
+}
+
+REGISTER_SIM_OBJECT("Iob", Iob)