diff options
author | Ron Dreslinski <rdreslin@umich.edu> | 2004-02-20 14:28:59 -0500 |
---|---|---|
committer | Ron Dreslinski <rdreslin@umich.edu> | 2004-02-20 14:28:59 -0500 |
commit | db940dd0b08f020326c20bc983af5d3483656491 (patch) | |
tree | 8c05a6a403b172e9d2f240a23ce085a90b84557c | |
parent | d4637757f855c14ebecfa7e4bea93c86143e5e45 (diff) | |
download | gem5-db940dd0b08f020326c20bc983af5d3483656491.tar.xz |
Add support for IPI's and extend RTC to interrupt all Processors
dev/tsunami_cchip.cc:
Add support for IPI, making changes to read/write to MISC register
Particularly the IPREQ, IPINTR, and ITINTR subfields
dev/tsunami_cchip.hh:
Make an array to keep track of the number of outstanding IPI's,
Extend RTC to interrupt all processors, not just cpu0
dev/tsunami_io.cc:
Extend RTC to interrupt all present proccessors, not just cpu0
--HG--
extra : convert_revision : 0715cbf0abb06002c0fb0b05ef369304cdf75001
-rw-r--r-- | dev/tsunami_cchip.cc | 69 | ||||
-rw-r--r-- | dev/tsunami_cchip.hh | 3 | ||||
-rw-r--r-- | dev/tsunami_io.cc | 12 |
3 files changed, 67 insertions, 17 deletions
diff --git a/dev/tsunami_cchip.cc b/dev/tsunami_cchip.cc index 2f0e6a883..abf2b1da4 100644 --- a/dev/tsunami_cchip.cc +++ b/dev/tsunami_cchip.cc @@ -31,11 +31,12 @@ TsunamiCChip::TsunamiCChip(const string &name, Tsunami *t, Addr a, dim[i] = 0; dir[i] = 0; dirInterrupting[i] = false; + ipiInterrupting[i] = false; + RTCInterrupting[i] = false; } drir = 0; misc = 0; - RTCInterrupting = false; //Put back pointer in tsunami tsunami->cchip = this; @@ -135,25 +136,67 @@ TsunamiCChip::write(MemReqPtr &req, const uint8_t *data) Addr daddr = (req->paddr - (addr & PA_IMPL_MASK)) >> 6; + bool supportedWrite = false; + + switch (req->size) { case sizeof(uint64_t): switch(daddr) { - case TSDEV_CC_CSR: + case TSDEV_CC_CSR: panic("TSDEV_CC_CSR write\n"); return No_Fault; case TSDEV_CC_MTR: panic("TSDEV_CC_MTR write not implemented\n"); return No_Fault; case TSDEV_CC_MISC: - //If it is the seventh bit, clear the RTC interrupt - if ((*(uint64_t*) data) & (1<<4)) { - RTCInterrupting = false; - tsunami->intrctrl->clear(0, TheISA::INTLEVEL_IRQ2, 0); - DPRINTF(Tsunami, "clearing rtc interrupt\n"); - misc &= ~(1<<4); - } else panic("TSDEV_CC_MISC write not implemented\n"); - return No_Fault; + //If it is the 4-7th bit, clear the RTC interrupt + uint64_t itintr; + if ((itintr = (*(uint64_t*) data) & (0xf<<4))) { + //Clear the bits in ITINTR + misc &= ~(itintr); + for (int i=0; i < 4; i++) { + if ((itintr & (1 << (i+4))) && RTCInterrupting[i]) { + tsunami->intrctrl->clear(i, TheISA::INTLEVEL_IRQ2, 0); + RTCInterrupting[i] = false; + DPRINTF(Tsunami, "clearing rtc interrupt\n"); + } + } + supportedWrite = true; + } + //If it is 12th-15th bit, IPI sent to Processor 1 + uint64_t ipreq; + if ((ipreq = (*(uint64_t*) data) & (0xf << 12))) { + //Set the bits in IPINTR + misc |= (ipreq >> 4); + for (int i=0; i < 4; i++) { + if ((ipreq & (1 << (i + 12)))) { + if (!ipiInterrupting[i]) + tsunami->intrctrl->post(i, TheISA::INTLEVEL_IRQ3, 0); + ipiInterrupting[i]++; + DPRINTF(IPI, "send cpu=%d pending=%d from=%d\n", i, + ipiInterrupting[i], req->cpu_num); + } + } + supportedWrite = true; + } + //If it is bits 8-11, then clearing IPI's + uint64_t ipintr; + if ((ipintr = (*(uint64_t*) data) & (0xf << 8))) { + //Clear the bits in IPINTR + misc &= ~(ipintr); + for (int i=0; i < 4; i++) { + if ((ipintr & (1 << (i + 8))) && ipiInterrupting[i]) { + if (!(--ipiInterrupting[i])) + tsunami->intrctrl->clear(i, TheISA::INTLEVEL_IRQ3, 0); + DPRINTF(IPI, "clearing cpu=%d pending=%d from=%d\n", i, + ipiInterrupting[i] + 1, req->cpu_num); + } + } + supportedWrite = true; + } + if(!supportedWrite) panic("TSDEV_CC_MISC write not implemented\n"); + return No_Fault; case TSDEV_CC_AAR0: case TSDEV_CC_AAR1: case TSDEV_CC_AAR2: @@ -287,9 +330,10 @@ TsunamiCChip::serialize(std::ostream &os) SERIALIZE_ARRAY(dim, Tsunami::Max_CPUs); SERIALIZE_ARRAY(dir, Tsunami::Max_CPUs); SERIALIZE_ARRAY(dirInterrupting, Tsunami::Max_CPUs); + SERIALIZE_ARRAY(ipiInterrupting, Tsunami::Max_CPUs); SERIALIZE_SCALAR(drir); SERIALIZE_SCALAR(misc); - SERIALIZE_SCALAR(RTCInterrupting); + SERIALIZE_ARRAY(RTCInterrupting, Tsunami::Max_CPUs); } void @@ -298,9 +342,10 @@ TsunamiCChip::unserialize(Checkpoint *cp, const std::string §ion) UNSERIALIZE_ARRAY(dim, Tsunami::Max_CPUs); UNSERIALIZE_ARRAY(dir, Tsunami::Max_CPUs); UNSERIALIZE_ARRAY(dirInterrupting, Tsunami::Max_CPUs); + UNSERIALIZE_ARRAY(ipiInterrupting, Tsunami::Max_CPUs); UNSERIALIZE_SCALAR(drir); UNSERIALIZE_SCALAR(misc); - UNSERIALIZE_SCALAR(RTCInterrupting); + UNSERIALIZE_ARRAY(RTCInterrupting, Tsunami::Max_CPUs); } BEGIN_DECLARE_SIM_OBJECT_PARAMS(TsunamiCChip) diff --git a/dev/tsunami_cchip.hh b/dev/tsunami_cchip.hh index 75214c527..a816e723e 100644 --- a/dev/tsunami_cchip.hh +++ b/dev/tsunami_cchip.hh @@ -71,6 +71,7 @@ class TsunamiCChip : public FunctionalMemory * that can occur. */ uint64_t drir; + uint64_t ipiInterrupting[Tsunami::Max_CPUs]; public: TsunamiCChip(const std::string &name, Tsunami *t, Addr a, @@ -86,7 +87,7 @@ class TsunamiCChip : public FunctionalMemory virtual void unserialize(Checkpoint *cp, const std::string §ion); uint64_t misc; - bool RTCInterrupting; + bool RTCInterrupting[Tsunami::Max_CPUs]; }; #endif // __TSUNAMI_CCHIP_HH__ diff --git a/dev/tsunami_io.cc b/dev/tsunami_io.cc index fa87a72c4..41acf1fae 100644 --- a/dev/tsunami_io.cc +++ b/dev/tsunami_io.cc @@ -65,10 +65,14 @@ TsunamiIO::RTCEvent::process() DPRINTF(MC146818, "RTC Timer Interrupt\n"); schedule(curTick + ticksPerSecond/RTC_RATE); //Actually interrupt the processor here - if (!tsunami->cchip->RTCInterrupting) { - tsunami->cchip->misc |= 1 << 7; - tsunami->cchip->RTCInterrupting = true; - tsunami->intrctrl->post(0, TheISA::INTLEVEL_IRQ2, 0); + int size = tsunami->intrctrl->cpu->system->execContexts.size(); + + for (int i = 0; i < size; i++) { + if (!tsunami->cchip->RTCInterrupting[i]) { + tsunami->cchip->misc |= 16 << i; + tsunami->cchip->RTCInterrupting[i] = true; + tsunami->intrctrl->post(i, TheISA::INTLEVEL_IRQ2, 0); + } } } |