#include <iostream>
#include <cstring>
+#include "base/cprintf.hh"
#include "base/misc.hh"
#include "base/trace.hh"
#include "mem/packet.hh"
+using namespace std;
+
// The one downside to bitsets is that static initializers can get ugly.
#define SET1(a1) (1 << (a1))
#define SET2(a1, a2) (SET1(a1) | SET1(a2))
{ 0, InvalidCmd, "InvalidCmd" },
/* ReadReq */
{ SET3(IsRead, IsRequest, NeedsResponse), ReadResp, "ReadReq" },
- /* WriteReq */
- { SET4(IsWrite, IsRequest, NeedsResponse, HasData),
- WriteResp, "WriteReq" },
- /* WriteReqNoAck */
- { SET3(IsWrite, IsRequest, HasData), InvalidCmd, "WriteReqNoAck" },
/* ReadResp */
{ SET3(IsRead, IsResponse, HasData), InvalidCmd, "ReadResp" },
+ /* ReadRespWithInvalidate */
+ { SET4(IsRead, IsResponse, HasData, IsInvalidate),
+ InvalidCmd, "ReadRespWithInvalidate" },
+ /* WriteReq */
+ { SET5(IsWrite, NeedsExclusive, IsRequest, NeedsResponse, HasData),
+ WriteResp, "WriteReq" },
/* WriteResp */
- { SET2(IsWrite, IsResponse), InvalidCmd, "WriteResp" },
+ { SET3(IsWrite, NeedsExclusive, IsResponse), InvalidCmd, "WriteResp" },
/* Writeback */
- { SET3(IsWrite, IsRequest, HasData), InvalidCmd, "Writeback" },
+ { SET4(IsWrite, NeedsExclusive, IsRequest, HasData),
+ InvalidCmd, "Writeback" },
/* SoftPFReq */
{ SET4(IsRead, IsRequest, IsSWPrefetch, NeedsResponse),
SoftPFResp, "SoftPFReq" },
/* HardPFResp */
{ SET4(IsRead, IsResponse, IsHWPrefetch, HasData),
InvalidCmd, "HardPFResp" },
- /* InvalidateReq */
- { SET2(IsInvalidate, IsRequest), InvalidCmd, "InvalidateReq" },
/* WriteInvalidateReq */
- { SET5(IsWrite, IsInvalidate, IsRequest, HasData, NeedsResponse),
+ { SET6(IsWrite, NeedsExclusive, IsInvalidate,
+ IsRequest, HasData, NeedsResponse),
WriteInvalidateResp, "WriteInvalidateReq" },
/* WriteInvalidateResp */
- { SET5(IsWrite, IsInvalidate, IsRequest, NeedsResponse, IsResponse),
+ { SET3(IsWrite, NeedsExclusive, IsResponse),
InvalidCmd, "WriteInvalidateResp" },
/* UpgradeReq */
- { SET3(IsInvalidate, IsRequest, IsUpgrade), InvalidCmd, "UpgradeReq" },
+ { SET4(IsInvalidate, NeedsExclusive, IsRequest, NeedsResponse),
+ UpgradeResp, "UpgradeReq" },
+ /* UpgradeResp */
+ { SET2(NeedsExclusive, IsResponse),
+ InvalidCmd, "UpgradeResp" },
/* ReadExReq */
- { SET4(IsRead, IsInvalidate, IsRequest, NeedsResponse),
+ { SET5(IsRead, NeedsExclusive, IsInvalidate, IsRequest, NeedsResponse),
ReadExResp, "ReadExReq" },
/* ReadExResp */
- { SET4(IsRead, IsInvalidate, IsResponse, HasData),
+ { SET4(IsRead, NeedsExclusive, IsResponse, HasData),
InvalidCmd, "ReadExResp" },
+ /* LoadLockedReq: note that we use plain ReadResp as response, so that
+ * we can also use ReadRespWithInvalidate when needed */
+ { SET4(IsRead, IsLlsc, IsRequest, NeedsResponse),
+ ReadResp, "LoadLockedReq" },
+ /* StoreCondReq */
+ { SET6(IsWrite, NeedsExclusive, IsLlsc,
+ IsRequest, NeedsResponse, HasData),
+ StoreCondResp, "StoreCondReq" },
+ /* StoreCondResp */
+ { SET4(IsWrite, NeedsExclusive, IsLlsc, IsResponse),
+ InvalidCmd, "StoreCondResp" },
/* SwapReq -- for Swap ldstub type operations */
- { SET4(IsReadWrite, IsRequest, HasData, NeedsResponse),
+ { SET6(IsRead, IsWrite, NeedsExclusive, IsRequest, HasData, NeedsResponse),
SwapResp, "SwapReq" },
/* SwapResp -- for Swap ldstub type operations */
- { SET3(IsReadWrite, IsResponse, HasData),
- InvalidCmd, "SwapResp" }
+ { SET5(IsRead, IsWrite, NeedsExclusive, IsResponse, HasData),
+ InvalidCmd, "SwapResp" },
+ /* IntReq -- for interrupts */
+ { SET4(IsWrite, IsRequest, NeedsResponse, HasData),
+ MessageResp, "MessageReq" },
+ /* IntResp -- for interrupts */
+ { SET2(IsWrite, IsResponse), InvalidCmd, "MessageResp" },
+ /* NetworkNackError -- nacked at network layer (not by protocol) */
+ { SET2(IsResponse, IsError), InvalidCmd, "NetworkNackError" },
+ /* InvalidDestError -- packet dest field invalid */
+ { SET2(IsResponse, IsError), InvalidCmd, "InvalidDestError" },
+ /* BadAddressError -- memory address invalid */
+ { SET2(IsResponse, IsError), InvalidCmd, "BadAddressError" },
+ /* PrintReq */
+ { SET2(IsRequest, IsPrint), InvalidCmd, "PrintReq" }
};
-
-/** delete the data pointed to in the data pointer. Ok to call to matter how
- * data was allocted. */
-void
-Packet::deleteData()
+bool
+Packet::checkFunctional(Printable *obj, Addr addr, int size, uint8_t *data)
{
- assert(staticData || dynamicData);
- if (staticData)
- return;
+ Addr func_start = getAddr();
+ Addr func_end = getAddr() + getSize() - 1;
+ Addr val_start = addr;
+ Addr val_end = val_start + size - 1;
- if (arrayData)
- delete [] data;
- else
- delete data;
+ if (func_start > val_end || val_start > func_end) {
+ // no intersection
+ return false;
+ }
+
+ // check print first since it doesn't require data
+ if (isPrint()) {
+ dynamic_cast<PrintReqState*>(senderState)->printObj(obj);
+ return false;
+ }
+
+ // if there's no data, there's no need to look further
+ if (!data) {
+ return false;
+ }
+
+ // offset of functional request into supplied value (could be
+ // negative if partial overlap)
+ int offset = func_start - val_start;
+
+ if (isRead()) {
+ if (func_start >= val_start && func_end <= val_end) {
+ allocate();
+ memcpy(getPtr<uint8_t>(), data + offset, getSize());
+ makeResponse();
+ return true;
+ } else {
+ // In this case the timing packet only partially satisfies
+ // the request, so we would need more information to make
+ // this work. Like bytes valid in the packet or
+ // something, so the request could continue and get this
+ // bit of possibly newer data along with the older data
+ // not written to yet.
+ panic("Memory value only partially satisfies the functional "
+ "request. Now what?");
+ }
+ } else if (isWrite()) {
+ if (offset >= 0) {
+ memcpy(data + offset, getPtr<uint8_t>(),
+ (min(func_end, val_end) - func_start) + 1);
+ } else {
+ // val_start > func_start
+ memcpy(data, getPtr<uint8_t>() - offset,
+ (min(func_end, val_end) - val_start) + 1);
+ }
+ } else {
+ panic("Don't know how to handle command %s\n", cmdString());
+ }
+
+ // keep going with request by default
+ return false;
}
-/** If there isn't data in the packet, allocate some. */
void
-Packet::allocate()
+Packet::print(ostream &o, const int verbosity, const string &prefix) const
{
- if (data)
- return;
- assert(!staticData);
- dynamicData = true;
- arrayData = true;
- data = new uint8_t[getSize()];
+ ccprintf(o, "%s[%x:%x] %s\n", prefix,
+ getAddr(), getAddr() + getSize() - 1, cmdString());
}
-/** Do the packet modify the same addresses. */
-bool
-Packet::intersect(PacketPtr p)
+Packet::PrintReqState::PrintReqState(ostream &_os, int _verbosity)
+ : curPrefixPtr(new string("")), os(_os), verbosity(_verbosity)
{
- Addr s1 = getAddr();
- Addr e1 = getAddr() + getSize() - 1;
- Addr s2 = p->getAddr();
- Addr e2 = p->getAddr() + p->getSize() - 1;
-
- return !(s1 > e2 || e1 < s2);
+ labelStack.push_back(LabelStackEntry("", curPrefixPtr));
}
-bool
-fixDelayedResponsePacket(PacketPtr func, PacketPtr timing)
+Packet::PrintReqState::~PrintReqState()
{
- bool result;
-
- if (timing->isRead() || timing->isWrite()) {
- // Ugly hack to deal with the fact that we queue the requests
- // and don't convert them to responses until we issue them on
- // the bus. I tried to avoid this by converting packets to
- // responses right away, but this breaks during snoops where a
- // responder may do the conversion before other caches have
- // done the snoop. Would work if we copied the packet instead
- // of just hanging on to a pointer.
- MemCmd oldCmd = timing->cmd;
- timing->cmd = timing->cmd.responseCommand();
- result = fixPacket(func, timing);
- timing->cmd = oldCmd;
- }
- else {
- //Don't toggle if it isn't a read/write response
- result = fixPacket(func, timing);
- }
-
- return result;
+ labelStack.pop_back();
+ assert(labelStack.empty());
+ delete curPrefixPtr;
}
-bool
-fixPacket(PacketPtr func, PacketPtr timing)
+Packet::PrintReqState::
+LabelStackEntry::LabelStackEntry(const string &_label, string *_prefix)
+ : label(_label), prefix(_prefix), labelPrinted(false)
{
- Addr funcStart = func->getAddr();
- Addr funcEnd = func->getAddr() + func->getSize() - 1;
- Addr timingStart = timing->getAddr();
- Addr timingEnd = timing->getAddr() + timing->getSize() - 1;
+}
- assert(!(funcStart > timingEnd || timingStart > funcEnd));
+void
+Packet::PrintReqState::pushLabel(const string &lbl, const string &prefix)
+{
+ labelStack.push_back(LabelStackEntry(lbl, curPrefixPtr));
+ curPrefixPtr = new string(*curPrefixPtr);
+ *curPrefixPtr += prefix;
+}
- // this packet can't solve our problem, continue on
- if (!timing->hasData())
- return true;
+void
+Packet::PrintReqState::popLabel()
+{
+ delete curPrefixPtr;
+ curPrefixPtr = labelStack.back().prefix;
+ labelStack.pop_back();
+ assert(!labelStack.empty());
+}
- if (func->isRead()) {
- if (funcStart >= timingStart && funcEnd <= timingEnd) {
- func->allocate();
- std::memcpy(func->getPtr<uint8_t>(), timing->getPtr<uint8_t>() +
- funcStart - timingStart, func->getSize());
- func->result = Packet::Success;
- func->flags |= SATISFIED;
- return false;
- } else {
- // In this case the timing packet only partially satisfies the
- // requset, so we would need more information to make this work.
- // Like bytes valid in the packet or something, so the request could
- // continue and get this bit of possibly newer data along with the
- // older data not written to yet.
- panic("Timing packet only partially satisfies the functional"
- "request. Now what?");
- }
- } else if (func->isWrite()) {
- if (funcStart >= timingStart) {
- std::memcpy(timing->getPtr<uint8_t>() + (funcStart - timingStart),
- func->getPtr<uint8_t>(),
- (std::min(funcEnd, timingEnd) - funcStart) + 1);
- } else { // timingStart > funcStart
- std::memcpy(timing->getPtr<uint8_t>(),
- func->getPtr<uint8_t>() + (timingStart - funcStart),
- (std::min(funcEnd, timingEnd) - timingStart) + 1);
+void
+Packet::PrintReqState::printLabels()
+{
+ if (!labelStack.back().labelPrinted) {
+ LabelStack::iterator i = labelStack.begin();
+ LabelStack::iterator end = labelStack.end();
+ while (i != end) {
+ if (!i->labelPrinted) {
+ ccprintf(os, "%s%s\n", *(i->prefix), i->label);
+ i->labelPrinted = true;
+ }
+ i++;
}
- // we always want to keep going with a write
- return true;
- } else
- panic("Don't know how to handle command type %#x\n",
- func->cmdToIndex());
-
+ }
}
-std::ostream &
-operator<<(std::ostream &o, const Packet &p)
+void
+Packet::PrintReqState::printObj(Printable *obj)
{
-
- o << "[0x";
- o.setf(std::ios_base::hex, std::ios_base::showbase);
- o << p.getAddr();
- o.unsetf(std::ios_base::hex| std::ios_base::showbase);
- o << ":";
- o.setf(std::ios_base::hex, std::ios_base::showbase);
- o << p.getAddr() + p.getSize() - 1 << "] ";
- o.unsetf(std::ios_base::hex| std::ios_base::showbase);
-
- if (p.result == Packet::Success)
- o << "Successful ";
- if (p.result == Packet::BadAddress)
- o << "BadAddress ";
- if (p.result == Packet::Nacked)
- o << "Nacked ";
- if (p.result == Packet::Unknown)
- o << "Inflight ";
-
- if (p.isRead())
- o << "Read ";
- if (p.isWrite())
- o << "Write ";
- if (p.isReadWrite())
- o << "Read/Write ";
- if (p.isInvalidate())
- o << "Invalidate ";
- if (p.isRequest())
- o << "Request ";
- if (p.isResponse())
- o << "Response ";
- if (p.hasData())
- o << "w/Data ";
-
- o << std::endl;
- return o;
+ printLabels();
+ obj->print(os, verbosity, curPrefix());
}
-
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