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-rw-r--r--src/dev/x86/I82094AA.py41
-rw-r--r--src/dev/x86/SConscript4
-rw-r--r--src/dev/x86/SouthBridge.py5
-rw-r--r--src/dev/x86/i82094aa.cc195
-rw-r--r--src/dev/x86/i82094aa.hh106
-rw-r--r--src/dev/x86/pc.cc15
-rw-r--r--src/dev/x86/south_bridge.cc2
-rw-r--r--src/dev/x86/south_bridge.hh2
8 files changed, 369 insertions, 1 deletions
diff --git a/src/dev/x86/I82094AA.py b/src/dev/x86/I82094AA.py
new file mode 100644
index 000000000..731d831f0
--- /dev/null
+++ b/src/dev/x86/I82094AA.py
@@ -0,0 +1,41 @@
+# 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
+from X86IntPin import X86IntPin
+
+class I82094AA(BasicPioDevice):
+ type = 'I82094AA'
+ cxx_class = 'X86ISA::I82094AA'
+ pio_latency = Param.Latency('1ns', "Programmed IO latency in simticks")
+ pio_addr = Param.Addr("Device address")
+
+ def pin(self, line):
+ return X86IntPin(device=self, line=line)
diff --git a/src/dev/x86/SConscript b/src/dev/x86/SConscript
index 7e3cc6eff..3481235c6 100644
--- a/src/dev/x86/SConscript
+++ b/src/dev/x86/SConscript
@@ -53,5 +53,9 @@ if env['FULL_SYSTEM'] and env['TARGET_ISA'] == 'x86':
Source('speaker.cc')
TraceFlag('PcSpeaker')
+ SimObject('I82094AA.py')
+ Source('i82094aa.cc')
+ TraceFlag('I82094AA')
+
SimObject('X86IntPin.py')
Source('intdev.cc')
diff --git a/src/dev/x86/SouthBridge.py b/src/dev/x86/SouthBridge.py
index 2f4b8438a..15ffe153f 100644
--- a/src/dev/x86/SouthBridge.py
+++ b/src/dev/x86/SouthBridge.py
@@ -29,6 +29,7 @@
from m5.params import *
from m5.proxy import *
from Cmos import Cmos
+from I82094AA import I82094AA
from I8254 import I8254
from I8259 import I8259
from PcSpeaker import PcSpeaker
@@ -48,15 +49,18 @@ class SouthBridge(SimObject):
_cmos = Cmos(pio_addr=x86IOAddress(0x70))
_pit = I8254(pio_addr=x86IOAddress(0x40))
_speaker = PcSpeaker(pio_addr=x86IOAddress(0x61))
+ _io_apic = I82094AA(pio_addr=0xFEC00000)
pic1 = Param.I8259(_pic1, "Master PIC")
pic2 = Param.I8259(_pic2, "Slave PIC")
cmos = Param.Cmos(_cmos, "CMOS memory and real time clock device")
pit = Param.I8254(_pit, "Programmable interval timer")
speaker = Param.PcSpeaker(_speaker, "PC speaker")
+ io_apic = Param.I82094AA(_io_apic, "I/O APIC")
def attachIO(self, bus):
# Make internal connections
+ self.pic1.output = self.io_apic.pin(0)
self.pic2.output = self.pic1.pin(2)
self.cmos.int_pin = self.pic2.pin(0)
self.pit.int_pin = self.pic1.pin(0)
@@ -67,3 +71,4 @@ class SouthBridge(SimObject):
self.pic2.pio = bus.port
self.pit.pio = bus.port
self.speaker.pio = bus.port
+ self.io_apic.pio = bus.port
diff --git a/src/dev/x86/i82094aa.cc b/src/dev/x86/i82094aa.cc
new file mode 100644
index 000000000..713f59592
--- /dev/null
+++ b/src/dev/x86/i82094aa.cc
@@ -0,0 +1,195 @@
+/*
+ * 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
+ */
+
+#include "dev/x86/i82094aa.hh"
+#include "mem/packet.hh"
+#include "mem/packet_access.hh"
+#include "sim/system.hh"
+
+X86ISA::I82094AA::I82094AA(Params *p) : PioDevice(p),
+ latency(p->pio_latency), pioAddr(p->pio_addr)
+{
+ // This assumes there's only one I/O APIC in the system
+ id = sys->getNumCPUs();
+ assert(id <= 0xf);
+ arbId = id;
+ regSel = 0;
+ memset(redirTable, 0, sizeof(RedirTableEntry) * TableSize);
+}
+
+Tick
+X86ISA::I82094AA::read(PacketPtr pkt)
+{
+ assert(pkt->getSize() == 4);
+ Addr offset = pkt->getAddr() - pioAddr;
+ switch(offset) {
+ case 0:
+ pkt->set<uint32_t>(regSel);
+ break;
+ case 16:
+ pkt->set<uint32_t>(readReg(regSel));
+ break;
+ default:
+ panic("Illegal read from I/O APIC.\n");
+ }
+ return latency;
+}
+
+Tick
+X86ISA::I82094AA::write(PacketPtr pkt)
+{
+ assert(pkt->getSize() == 4);
+ Addr offset = pkt->getAddr() - pioAddr;
+ switch(offset) {
+ case 0:
+ regSel = pkt->get<uint32_t>();
+ break;
+ case 16:
+ writeReg(regSel, pkt->get<uint32_t>());
+ break;
+ default:
+ panic("Illegal write to I/O APIC.\n");
+ }
+ return latency;
+}
+
+void
+X86ISA::I82094AA::writeReg(uint8_t offset, uint32_t value)
+{
+ if (offset == 0x0) {
+ id = bits(value, 27, 24);
+ } else if (offset == 0x1) {
+ // The IOAPICVER register is read only.
+ } else if (offset == 0x2) {
+ arbId = bits(value, 27, 24);
+ } else if (offset >= 0x10 && offset <= (0x10 + TableSize * 2)) {
+ int index = (offset - 0x10) / 2;
+ if (offset % 2) {
+ redirTable[index].topDW = value;
+ redirTable[index].topReserved = 0;
+ } else {
+ redirTable[index].bottomDW = value;
+ redirTable[index].bottomReserved = 0;
+ }
+ } else {
+ warn("Access to undefined I/O APIC register %#x.\n", offset);
+ }
+ DPRINTF(I82094AA,
+ "Wrote %#x to I/O APIC register %#x .\n", value, offset);
+}
+
+uint32_t
+X86ISA::I82094AA::readReg(uint8_t offset)
+{
+ uint32_t result = 0;
+ if (offset == 0x0) {
+ result = id << 24;
+ } else if (offset == 0x1) {
+ result = ((TableSize - 1) << 16) | APICVersion;
+ } else if (offset == 0x2) {
+ result = arbId << 24;
+ } else if (offset >= 0x10 && offset <= (0x10 + TableSize * 2)) {
+ int index = (offset - 0x10) / 2;
+ if (offset % 2) {
+ result = redirTable[index].topDW;
+ } else {
+ result = redirTable[index].bottomDW;
+ }
+ } else {
+ warn("Access to undefined I/O APIC register %#x.\n", offset);
+ }
+ DPRINTF(I82094AA,
+ "Read %#x from I/O APIC register %#x.\n", result, offset);
+ return result;
+}
+
+void
+X86ISA::I82094AA::signalInterrupt(int line)
+{
+ DPRINTF(I82094AA, "Received interrupt %d.\n", line);
+ assert(line < TableSize);
+ RedirTableEntry entry = redirTable[line];
+ if (entry.mask) {
+ DPRINTF(I82094AA, "Entry was masked.\n");
+ return;
+ } else {
+ if (entry.destMode == 0) {
+ DPRINTF(I82094AA,
+ "Would send interrupt to APIC ID %d.\n", entry.dest);
+ } else {
+ DPRINTF(I82094AA, "Would send interrupts to APIC IDs:"
+ "%s%s%s%s%s%s%s%s\n",
+ bits((int)entry.dest, 0) ? " 0": "",
+ bits((int)entry.dest, 1) ? " 1": "",
+ bits((int)entry.dest, 2) ? " 2": "",
+ bits((int)entry.dest, 3) ? " 3": "",
+ bits((int)entry.dest, 4) ? " 4": "",
+ bits((int)entry.dest, 5) ? " 5": "",
+ bits((int)entry.dest, 6) ? " 6": "",
+ bits((int)entry.dest, 7) ? " 7": ""
+ );
+ }
+ switch(entry.deliveryMode) {
+ case 0:
+ DPRINTF(I82094AA, "Delivery mode is: Fixed.\n");
+ break;
+ case 1:
+ DPRINTF(I82094AA, "Delivery mode is: Lowest Priority.\n");
+ break;
+ case 2:
+ DPRINTF(I82094AA, "Delivery mode is: SMI.\n");
+ break;
+ case 3:
+ fatal("Tried to use reserved delivery mode "
+ "for IO APIC entry %d.\n", line);
+ break;
+ case 4:
+ DPRINTF(I82094AA, "Delivery mode is: NMI.\n");
+ break;
+ case 5:
+ DPRINTF(I82094AA, "Delivery mode is: INIT.\n");
+ break;
+ case 6:
+ fatal("Tried to use reserved delivery mode "
+ "for IO APIC entry %d.\n", line);
+ break;
+ case 7:
+ DPRINTF(I82094AA, "Delivery mode is: ExtINT.\n");
+ break;
+ }
+ DPRINTF(I82094AA, "Vector is %#x.\n", entry.vector);
+ }
+}
+
+X86ISA::I82094AA *
+I82094AAParams::create()
+{
+ return new X86ISA::I82094AA(this);
+}
diff --git a/src/dev/x86/i82094aa.hh b/src/dev/x86/i82094aa.hh
new file mode 100644
index 000000000..b442e3e92
--- /dev/null
+++ b/src/dev/x86/i82094aa.hh
@@ -0,0 +1,106 @@
+/*
+ * 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
+ */
+
+#ifndef __DEV_X86_I82094AA_HH__
+#define __DEV_X86_I82094AA_HH__
+
+#include "base/bitunion.hh"
+#include "base/range_map.hh"
+#include "dev/io_device.hh"
+#include "dev/x86/intdev.hh"
+#include "params/I82094AA.hh"
+
+namespace X86ISA
+{
+
+class I82094AA : public PioDevice, public IntDev
+{
+ public:
+ BitUnion64(RedirTableEntry)
+ Bitfield<63, 32> topDW;
+ Bitfield<55, 32> topReserved;
+ Bitfield<31, 0> bottomDW;
+ Bitfield<31, 17> bottomReserved;
+ Bitfield<63, 56> dest;
+ Bitfield<16> mask;
+ Bitfield<15> trigger;
+ Bitfield<14> remoteIRR;
+ Bitfield<13> polarity;
+ Bitfield<12> deliveryStatus;
+ Bitfield<11> destMode;
+ Bitfield<10, 8> deliveryMode;
+ Bitfield<7, 0> vector;
+ EndBitUnion(RedirTableEntry)
+
+ protected:
+ Tick latency;
+ Addr pioAddr;
+
+ uint8_t regSel;
+ uint8_t id;
+ uint8_t arbId;
+
+ static const uint8_t TableSize = 24;
+ // This implementation is based on version 0x11, but 0x14 avoids having
+ // to deal with the arbitration and APIC bus guck.
+ static const uint8_t APICVersion = 0x14;
+
+ RedirTableEntry redirTable[TableSize];
+
+ public:
+ typedef I82094AAParams Params;
+
+ const Params *
+ params() const
+ {
+ return dynamic_cast<const Params *>(_params);
+ }
+
+ I82094AA(Params *p);
+
+ Tick read(PacketPtr pkt);
+ Tick write(PacketPtr pkt);
+
+ void addressRanges(AddrRangeList &range_list)
+ {
+ range_list.clear();
+ range_list.push_back(RangeEx(pioAddr, pioAddr + 4));
+ range_list.push_back(RangeEx(pioAddr + 16, pioAddr + 20));
+ }
+
+ void writeReg(uint8_t offset, uint32_t value);
+ uint32_t readReg(uint8_t offset);
+
+ void signalInterrupt(int line);
+};
+
+}; // namespace X86ISA
+
+#endif //__DEV_X86_SOUTH_BRIDGE_I8254_HH__
diff --git a/src/dev/x86/pc.cc b/src/dev/x86/pc.cc
index 0dc8d6cd5..4cd81dd50 100644
--- a/src/dev/x86/pc.cc
+++ b/src/dev/x86/pc.cc
@@ -39,6 +39,7 @@
#include "arch/x86/x86_traits.hh"
#include "cpu/intr_control.hh"
#include "dev/terminal.hh"
+#include "dev/x86/i82094aa.hh"
#include "dev/x86/i8254.hh"
#include "dev/x86/pc.hh"
#include "dev/x86/south_bridge.hh"
@@ -59,6 +60,10 @@ void
Pc::init()
{
assert(southBridge);
+
+ /*
+ * Initialize the timer.
+ */
I8254 & timer = *southBridge->pit;
//Timer 0, mode 2, no bcd, 16 bit count
timer.writeControl(0x34);
@@ -67,6 +72,16 @@ Pc::init()
//Write a 16 bit count of 0
timer.writeCounter(0, 0);
timer.writeCounter(0, 0);
+
+ /*
+ * Initialize the I/O APIC.
+ */
+ I82094AA & ioApic = *southBridge->ioApic;
+ I82094AA::RedirTableEntry entry = 0;
+ entry.deliveryMode = 0x7;
+ entry.vector = 0x20;
+ ioApic.writeReg(0x10, entry.bottomDW);
+ ioApic.writeReg(0x11, entry.topDW);
}
Tick
diff --git a/src/dev/x86/south_bridge.cc b/src/dev/x86/south_bridge.cc
index d366de4ad..c456f478d 100644
--- a/src/dev/x86/south_bridge.cc
+++ b/src/dev/x86/south_bridge.cc
@@ -37,7 +37,7 @@ using namespace X86ISA;
SouthBridge::SouthBridge(const Params *p) : SimObject(p),
platform(p->platform), pit(p->pit), pic1(p->pic1), pic2(p->pic2),
- cmos(p->cmos), speaker(p->speaker)
+ cmos(p->cmos), speaker(p->speaker), ioApic(p->io_apic)
{
// Let the platform know where we are
Pc * pc = dynamic_cast<Pc *>(platform);
diff --git a/src/dev/x86/south_bridge.hh b/src/dev/x86/south_bridge.hh
index 5677aa8a0..61d6d387a 100644
--- a/src/dev/x86/south_bridge.hh
+++ b/src/dev/x86/south_bridge.hh
@@ -40,6 +40,7 @@ namespace X86ISA
class I8259;
class Cmos;
class Speaker;
+ class I82094AA;
}
class SouthBridge : public SimObject
@@ -53,6 +54,7 @@ class SouthBridge : public SimObject
X86ISA::I8259 * pic2;
X86ISA::Cmos * cmos;
X86ISA::Speaker * speaker;
+ X86ISA::I82094AA * ioApic;
public:
typedef SouthBridgeParams Params;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-23 02:50:45 +0000