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authorBrad Beckmann <Brad.Beckmann@amd.com>2011-02-06 22:14:18 -0800
committerBrad Beckmann <Brad.Beckmann@amd.com>2011-02-06 22:14:18 -0800
commitc41fc138e78420c72d8dada805a16c96f74f631b (patch)
treed66a767288ca51f19f143c891ce2b722101bca40
parent3a2d2223e1debf932a0cec3244e4ce63e5d748af (diff)
downloadgem5-c41fc138e78420c72d8dada805a16c96f74f631b.tar.xz
dev: fixed bugs to extend interrupt capability beyond 15 cores
-rw-r--r--src/arch/x86/interrupts.cc7
-rw-r--r--src/dev/x86/i82094aa.cc22
-rw-r--r--src/dev/x86/i82094aa.hh2
-rw-r--r--src/dev/x86/intdev.cc9
-rw-r--r--src/dev/x86/intdev.hh10
5 files changed, 38 insertions, 12 deletions
diff --git a/src/arch/x86/interrupts.cc b/src/arch/x86/interrupts.cc
index 9b2d42a16..837c802ec 100644
--- a/src/arch/x86/interrupts.cc
+++ b/src/arch/x86/interrupts.cc
@@ -294,7 +294,14 @@ X86ISA::Interrupts::setCPU(BaseCPU * newCPU)
void
X86ISA::Interrupts::init()
{
+ //
+ // The local apic must register its address ranges on both its pio port
+ // via the basicpiodevice(piodevice) init() function and its int port
+ // that it inherited from IntDev. Note IntDev is not a SimObject itself.
+ //
BasicPioDevice::init();
+ IntDev::init();
+
Pc * pc = dynamic_cast<Pc *>(platform);
assert(pc);
pc->southBridge->ioApic->registerLocalApic(initialApicId, this);
diff --git a/src/dev/x86/i82094aa.cc b/src/dev/x86/i82094aa.cc
index cb9b51d58..90c6a0900 100644
--- a/src/dev/x86/i82094aa.cc
+++ b/src/dev/x86/i82094aa.cc
@@ -41,9 +41,12 @@ X86ISA::I82094AA::I82094AA(Params *p) : PioDevice(p),
latency(p->pio_latency), pioAddr(p->pio_addr),
extIntPic(p->external_int_pic), lowestPriorityOffset(0)
{
- // This assumes there's only one I/O APIC in the system
+ // This assumes there's only one I/O APIC in the system and since the apic
+ // id is stored in a 8-bit field with 0xff meaning broadcast, the id must
+ // be less than 0xff
+
+ assert(p->apic_id < 0xff);
initialApicId = id = p->apic_id;
- assert(id <= 0xf);
arbId = id;
regSel = 0;
RedirTableEntry entry = 0;
@@ -54,6 +57,17 @@ X86ISA::I82094AA::I82094AA(Params *p) : PioDevice(p),
}
}
+void
+X86ISA::I82094AA::init()
+{
+ // The io apic must register its address ranges on both its pio port
+ // via the piodevice init() function and its int port that it inherited
+ // from IntDev. Note IntDev is not a SimObject itself.
+
+ PioDevice::init();
+ IntDev::init();
+}
+
Tick
X86ISA::I82094AA::read(PacketPtr pkt)
{
@@ -96,11 +110,11 @@ void
X86ISA::I82094AA::writeReg(uint8_t offset, uint32_t value)
{
if (offset == 0x0) {
- id = bits(value, 27, 24);
+ id = bits(value, 31, 24);
} else if (offset == 0x1) {
// The IOAPICVER register is read only.
} else if (offset == 0x2) {
- arbId = bits(value, 27, 24);
+ arbId = bits(value, 31, 24);
} else if (offset >= 0x10 && offset <= (0x10 + TableSize * 2)) {
int index = (offset - 0x10) / 2;
if (offset % 2) {
diff --git a/src/dev/x86/i82094aa.hh b/src/dev/x86/i82094aa.hh
index 442163bbf..8be23d2c9 100644
--- a/src/dev/x86/i82094aa.hh
+++ b/src/dev/x86/i82094aa.hh
@@ -98,6 +98,8 @@ class I82094AA : public PioDevice, public IntDev
I82094AA(Params *p);
+ void init();
+
Tick read(PacketPtr pkt);
Tick write(PacketPtr pkt);
diff --git a/src/dev/x86/intdev.cc b/src/dev/x86/intdev.cc
index 0d392d5ee..0c0fa73cf 100644
--- a/src/dev/x86/intdev.cc
+++ b/src/dev/x86/intdev.cc
@@ -48,6 +48,15 @@ X86ISA::IntDev::IntPort::sendMessage(ApicList apics,
}
}
+void
+X86ISA::IntDev::init()
+{
+ if (!intPort) {
+ panic("Int port not connected to anything!");
+ }
+ intPort->sendStatusChange(Port::RangeChange);
+}
+
X86ISA::IntSourcePin *
X86IntSourcePinParams::create()
{
diff --git a/src/dev/x86/intdev.hh b/src/dev/x86/intdev.hh
index 61e486718..b26b081bf 100644
--- a/src/dev/x86/intdev.hh
+++ b/src/dev/x86/intdev.hh
@@ -84,14 +84,6 @@ class IntDev
// need to be moved into a subclass.
void sendMessage(ApicList apics,
TriggerIntMessage message, bool timing);
-
- void recvStatusChange(Status status)
- {
- if (status == RangeChange) {
- sendStatusChange(Port::RangeChange);
- }
- }
-
};
IntPort * intPort;
@@ -110,6 +102,8 @@ class IntDev
virtual ~IntDev()
{}
+ virtual void init();
+
virtual void
signalInterrupt(int line)
{