style: clean up the Packet stuff
This commit is contained in:
parent
2dd699ed3d
commit
3535d746ab
4 changed files with 606 additions and 406 deletions
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@ -42,6 +42,8 @@
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#include "base/trace.hh"
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#include "base/trace.hh"
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#include "mem/packet.hh"
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#include "mem/packet.hh"
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using namespace std;
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// The one downside to bitsets is that static initializers can get ugly.
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// The one downside to bitsets is that static initializers can get ugly.
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#define SET1(a1) (1 << (a1))
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#define SET1(a1) (1 << (a1))
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#define SET2(a1, a2) (SET1(a1) | SET1(a2))
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#define SET2(a1, a2) (SET1(a1) | SET1(a2))
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@ -133,35 +135,6 @@ MemCmd::commandInfo[] =
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{ SET2(IsRequest, IsPrint), InvalidCmd, "PrintReq" }
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{ SET2(IsRequest, IsPrint), InvalidCmd, "PrintReq" }
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};
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};
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/** delete the data pointed to in the data pointer. Ok to call to matter how
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* data was allocted. */
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void
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Packet::deleteData()
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{
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assert(staticData || dynamicData);
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if (staticData)
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return;
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if (arrayData)
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delete [] data;
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else
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delete data;
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}
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/** If there isn't data in the packet, allocate some. */
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void
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Packet::allocate()
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{
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if (data)
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return;
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assert(!staticData);
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dynamicData = true;
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arrayData = true;
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data = new uint8_t[getSize()];
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}
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bool
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bool
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Packet::checkFunctional(Printable *obj, Addr addr, int size, uint8_t *data)
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Packet::checkFunctional(Printable *obj, Addr addr, int size, uint8_t *data)
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{
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{
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@ -193,7 +166,7 @@ Packet::checkFunctional(Printable *obj, Addr addr, int size, uint8_t *data)
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if (isRead()) {
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if (isRead()) {
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if (func_start >= val_start && func_end <= val_end) {
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if (func_start >= val_start && func_end <= val_end) {
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allocate();
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allocate();
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std::memcpy(getPtr<uint8_t>(), data + offset, getSize());
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memcpy(getPtr<uint8_t>(), data + offset, getSize());
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makeResponse();
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makeResponse();
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return true;
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return true;
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} else {
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} else {
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@ -208,11 +181,12 @@ Packet::checkFunctional(Printable *obj, Addr addr, int size, uint8_t *data)
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}
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}
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} else if (isWrite()) {
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} else if (isWrite()) {
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if (offset >= 0) {
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if (offset >= 0) {
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std::memcpy(data + offset, getPtr<uint8_t>(),
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memcpy(data + offset, getPtr<uint8_t>(),
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(std::min(func_end, val_end) - func_start) + 1);
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(min(func_end, val_end) - func_start) + 1);
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} else { // val_start > func_start
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} else {
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std::memcpy(data, getPtr<uint8_t>() - offset,
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// val_start > func_start
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(std::min(func_end, val_end) - val_start) + 1);
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memcpy(data, getPtr<uint8_t>() - offset,
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(min(func_end, val_end) - val_start) + 1);
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}
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}
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} else {
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} else {
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panic("Don't know how to handle command %s\n", cmdString());
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panic("Don't know how to handle command %s\n", cmdString());
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@ -222,23 +196,19 @@ Packet::checkFunctional(Printable *obj, Addr addr, int size, uint8_t *data)
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return false;
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return false;
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}
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}
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void
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void
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Packet::print(std::ostream &o, const int verbosity,
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Packet::print(ostream &o, const int verbosity, const string &prefix) const
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const std::string &prefix) const
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{
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{
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ccprintf(o, "%s[%x:%x] %s\n", prefix,
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ccprintf(o, "%s[%x:%x] %s\n", prefix,
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getAddr(), getAddr() + getSize() - 1, cmdString());
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getAddr(), getAddr() + getSize() - 1, cmdString());
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}
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}
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Packet::PrintReqState::PrintReqState(ostream &_os, int _verbosity)
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Packet::PrintReqState::PrintReqState(std::ostream &_os, int _verbosity)
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: curPrefixPtr(new string("")), os(_os), verbosity(_verbosity)
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: curPrefixPtr(new std::string("")), os(_os), verbosity(_verbosity)
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{
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{
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labelStack.push_back(LabelStackEntry("", curPrefixPtr));
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labelStack.push_back(LabelStackEntry("", curPrefixPtr));
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}
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}
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Packet::PrintReqState::~PrintReqState()
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Packet::PrintReqState::~PrintReqState()
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{
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{
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labelStack.pop_back();
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labelStack.pop_back();
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@ -246,21 +216,17 @@ Packet::PrintReqState::~PrintReqState()
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delete curPrefixPtr;
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delete curPrefixPtr;
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}
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}
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Packet::PrintReqState::
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Packet::PrintReqState::
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LabelStackEntry::LabelStackEntry(const std::string &_label,
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LabelStackEntry::LabelStackEntry(const string &_label, string *_prefix)
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std::string *_prefix)
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: label(_label), prefix(_prefix), labelPrinted(false)
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: label(_label), prefix(_prefix), labelPrinted(false)
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{
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{
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}
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}
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void
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void
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Packet::PrintReqState::pushLabel(const std::string &lbl,
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Packet::PrintReqState::pushLabel(const string &lbl, const string &prefix)
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const std::string &prefix)
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{
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{
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labelStack.push_back(LabelStackEntry(lbl, curPrefixPtr));
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labelStack.push_back(LabelStackEntry(lbl, curPrefixPtr));
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curPrefixPtr = new std::string(*curPrefixPtr);
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curPrefixPtr = new string(*curPrefixPtr);
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*curPrefixPtr += prefix;
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*curPrefixPtr += prefix;
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}
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}
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@ -42,8 +42,10 @@
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#include <list>
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#include <list>
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#include <bitset>
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#include <bitset>
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#include "base/cast.hh"
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#include "base/compiler.hh"
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#include "base/compiler.hh"
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#include "base/fast_alloc.hh"
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#include "base/fast_alloc.hh"
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#include "base/flags.hh"
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#include "base/misc.hh"
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#include "base/misc.hh"
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#include "base/printable.hh"
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#include "base/printable.hh"
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#include "mem/request.hh"
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#include "mem/request.hh"
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@ -58,9 +60,12 @@ typedef std::list<PacketPtr> PacketList;
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class MemCmd
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class MemCmd
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{
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{
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public:
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friend class Packet;
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/** List of all commands associated with a packet. */
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public:
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/**
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* List of all commands associated with a packet.
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*/
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enum Command
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enum Command
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{
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{
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InvalidCmd,
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InvalidCmd,
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@ -100,7 +105,9 @@ class MemCmd
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};
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};
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private:
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private:
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/** List of command attributes. */
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/**
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* List of command attributes.
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*/
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enum Attribute
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enum Attribute
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{
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{
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IsRead, //!< Data flows from responder to requester
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IsRead, //!< Data flows from responder to requester
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@ -120,26 +127,31 @@ class MemCmd
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NUM_COMMAND_ATTRIBUTES
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NUM_COMMAND_ATTRIBUTES
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};
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};
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/** Structure that defines attributes and other data associated
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/**
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* with a Command. */
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* Structure that defines attributes and other data associated
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struct CommandInfo {
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* with a Command.
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/** Set of attribute flags. */
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*/
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struct CommandInfo
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{
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/// Set of attribute flags.
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const std::bitset<NUM_COMMAND_ATTRIBUTES> attributes;
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const std::bitset<NUM_COMMAND_ATTRIBUTES> attributes;
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/** Corresponding response for requests; InvalidCmd if no
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/// Corresponding response for requests; InvalidCmd if no
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* response is applicable. */
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/// response is applicable.
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const Command response;
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const Command response;
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/** String representation (for printing) */
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/// String representation (for printing)
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const std::string str;
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const std::string str;
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};
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};
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/** Array to map Command enum to associated info. */
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/// Array to map Command enum to associated info.
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static const CommandInfo commandInfo[];
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static const CommandInfo commandInfo[];
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private:
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private:
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Command cmd;
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Command cmd;
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bool testCmdAttrib(MemCmd::Attribute attrib) const {
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bool
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testCmdAttrib(MemCmd::Attribute attrib) const
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{
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return commandInfo[cmd].attributes[attrib] != 0;
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return commandInfo[cmd].attributes[attrib] != 0;
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}
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}
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@ -158,33 +170,22 @@ class MemCmd
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bool isError() const { return testCmdAttrib(IsError); }
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bool isError() const { return testCmdAttrib(IsError); }
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bool isPrint() const { return testCmdAttrib(IsPrint); }
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bool isPrint() const { return testCmdAttrib(IsPrint); }
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const Command responseCommand() const {
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const Command
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responseCommand() const
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{
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return commandInfo[cmd].response;
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return commandInfo[cmd].response;
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}
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}
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/** Return the string to a cmd given by idx. */
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/// Return the string to a cmd given by idx.
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const std::string &toString() const {
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const std::string &toString() const { return commandInfo[cmd].str; }
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return commandInfo[cmd].str;
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}
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int toInt() const { return (int)cmd; }
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int toInt() const { return (int)cmd; }
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MemCmd(Command _cmd)
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MemCmd(Command _cmd) : cmd(_cmd) { }
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: cmd(_cmd)
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MemCmd(int _cmd) : cmd((Command)_cmd) { }
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{ }
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MemCmd() : cmd(InvalidCmd) { }
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MemCmd(int _cmd)
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bool operator==(MemCmd c2) const { return (cmd == c2.cmd); }
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: cmd((Command)_cmd)
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bool operator!=(MemCmd c2) const { return (cmd != c2.cmd); }
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{ }
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MemCmd()
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: cmd(InvalidCmd)
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{ }
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bool operator==(MemCmd c2) { return (cmd == c2.cmd); }
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bool operator!=(MemCmd c2) { return (cmd != c2.cmd); }
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friend class Packet;
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};
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};
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/**
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/**
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@ -197,107 +198,118 @@ class MemCmd
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class Packet : public FastAlloc, public Printable
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class Packet : public FastAlloc, public Printable
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{
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{
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public:
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public:
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typedef uint32_t FlagsType;
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typedef ::Flags<FlagsType> Flags;
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typedef short NodeID;
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private:
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static const FlagsType PUBLIC_FLAGS = 0x00000000;
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static const FlagsType PRIVATE_FLAGS = 0x00007F0F;
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static const FlagsType COPY_FLAGS = 0x0000000F;
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static const FlagsType SHARED = 0x00000001;
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// Special control flags
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/// Special timing-mode atomic snoop for multi-level coherence.
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static const FlagsType EXPRESS_SNOOP = 0x00000002;
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/// Does supplier have exclusive copy?
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/// Useful for multi-level coherence.
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static const FlagsType SUPPLY_EXCLUSIVE = 0x00000004;
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// Snoop response flags
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static const FlagsType MEM_INHIBIT = 0x00000008;
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/// Are the 'addr' and 'size' fields valid?
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static const FlagsType VALID_ADDR = 0x00000100;
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static const FlagsType VALID_SIZE = 0x00000200;
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/// Is the 'src' field valid?
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static const FlagsType VALID_SRC = 0x00000400;
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static const FlagsType VALID_DST = 0x00000800;
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/// Is the data pointer set to a value that shouldn't be freed
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/// when the packet is destroyed?
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static const FlagsType STATIC_DATA = 0x00001000;
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/// The data pointer points to a value that should be freed when
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/// the packet is destroyed.
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static const FlagsType DYNAMIC_DATA = 0x00002000;
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/// the data pointer points to an array (thus delete []) needs to
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/// be called on it rather than simply delete.
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static const FlagsType ARRAY_DATA = 0x00004000;
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Flags flags;
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public:
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typedef MemCmd::Command Command;
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typedef MemCmd::Command Command;
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/** The command field of the packet. */
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/// The command field of the packet.
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MemCmd cmd;
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MemCmd cmd;
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/** A pointer to the original request. */
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/// A pointer to the original request.
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RequestPtr req;
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RequestPtr req;
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private:
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private:
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/** A pointer to the data being transfered. It can be differnt
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/**
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* sizes at each level of the heirarchy so it belongs in the
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* A pointer to the data being transfered. It can be differnt
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* packet, not request. This may or may not be populated when a
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* sizes at each level of the heirarchy so it belongs in the
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* responder recieves the packet. If not populated it memory
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* packet, not request. This may or may not be populated when a
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* should be allocated.
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* responder recieves the packet. If not populated it memory should
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* be allocated.
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*/
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*/
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PacketDataPtr data;
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PacketDataPtr data;
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/** Is the data pointer set to a value that shouldn't be freed
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/// The address of the request. This address could be virtual or
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* when the packet is destroyed? */
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/// physical, depending on the system configuration.
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bool staticData;
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/** The data pointer points to a value that should be freed when
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* the packet is destroyed. */
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bool dynamicData;
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/** the data pointer points to an array (thus delete [] ) needs to
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* be called on it rather than simply delete.*/
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bool arrayData;
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/** The address of the request. This address could be virtual or
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* physical, depending on the system configuration. */
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Addr addr;
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Addr addr;
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/** The size of the request or transfer. */
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/// The size of the request or transfer.
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int size;
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int size;
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/** Device address (e.g., bus ID) of the source of the
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/**
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* transaction. The source is not responsible for setting this
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* Device address (e.g., bus ID) of the source of the
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* field; it is set implicitly by the interconnect when the
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* transaction. The source is not responsible for setting this
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* packet is first sent. */
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* field; it is set implicitly by the interconnect when the packet
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short src;
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* is first sent.
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*/
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NodeID src;
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/** Device address (e.g., bus ID) of the destination of the
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/**
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* transaction. The special value Broadcast indicates that the
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* Device address (e.g., bus ID) of the destination of the
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* packet should be routed based on its address. This field is
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* transaction. The special value Broadcast indicates that the
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* initialized in the constructor and is thus always valid
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* packet should be routed based on its address. This field is
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* (unlike * addr, size, and src). */
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* initialized in the constructor and is thus always valid (unlike
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short dest;
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* addr, size, and src).
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*/
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NodeID dest;
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/** The original value of the command field. Only valid when the
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/**
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* The original value of the command field. Only valid when the
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* current command field is an error condition; in that case, the
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* current command field is an error condition; in that case, the
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* previous contents of the command field are copied here. This
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* previous contents of the command field are copied here. This
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* field is *not* set on non-error responses.
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* field is *not* set on non-error responses.
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*/
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*/
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MemCmd origCmd;
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MemCmd origCmd;
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/** Are the 'addr' and 'size' fields valid? */
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bool addrSizeValid;
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/** Is the 'src' field valid? */
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bool srcValid;
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bool destValid;
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enum Flag {
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// Snoop response flags
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MemInhibit,
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Shared,
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// Special control flags
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/// Special timing-mode atomic snoop for multi-level coherence.
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ExpressSnoop,
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/// Does supplier have exclusive copy?
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/// Useful for multi-level coherence.
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SupplyExclusive,
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NUM_PACKET_FLAGS
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};
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/** Status flags */
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std::bitset<NUM_PACKET_FLAGS> flags;
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|
||||||
public:
|
public:
|
||||||
|
/// Used to calculate latencies for each packet.
|
||||||
/** Used to calculate latencies for each packet.*/
|
|
||||||
Tick time;
|
Tick time;
|
||||||
|
|
||||||
/** The time at which the packet will be fully transmitted */
|
/// The time at which the packet will be fully transmitted
|
||||||
Tick finishTime;
|
Tick finishTime;
|
||||||
|
|
||||||
/** The time at which the first chunk of the packet will be transmitted */
|
/// The time at which the first chunk of the packet will be transmitted
|
||||||
Tick firstWordTime;
|
Tick firstWordTime;
|
||||||
|
|
||||||
/** The special destination address indicating that the packet
|
/// The special destination address indicating that the packet
|
||||||
* should be routed based on its address. */
|
/// should be routed based on its address.
|
||||||
static const short Broadcast = -1;
|
static const NodeID Broadcast = -1;
|
||||||
|
|
||||||
/** A virtual base opaque structure used to hold state associated
|
/**
|
||||||
* with the packet but specific to the sending device (e.g., an
|
* A virtual base opaque structure used to hold state associated
|
||||||
* MSHR). A pointer to this state is returned in the packet's
|
* with the packet but specific to the sending device (e.g., an
|
||||||
* response so that the sender can quickly look up the state
|
* MSHR). A pointer to this state is returned in the packet's
|
||||||
* needed to process it. A specific subclass would be derived
|
* response so that the sender can quickly look up the state
|
||||||
* from this to carry state specific to a particular sending
|
* needed to process it. A specific subclass would be derived
|
||||||
* device. */
|
* from this to carry state specific to a particular sending
|
||||||
class SenderState {
|
* device.
|
||||||
public:
|
*/
|
||||||
|
struct SenderState
|
||||||
|
{
|
||||||
virtual ~SenderState() {}
|
virtual ~SenderState() {}
|
||||||
};
|
};
|
||||||
|
|
||||||
|
@ -305,15 +317,18 @@ class Packet : public FastAlloc, public Printable
|
||||||
* Object used to maintain state of a PrintReq. The senderState
|
* Object used to maintain state of a PrintReq. The senderState
|
||||||
* field of a PrintReq should always be of this type.
|
* field of a PrintReq should always be of this type.
|
||||||
*/
|
*/
|
||||||
class PrintReqState : public SenderState, public FastAlloc {
|
class PrintReqState : public SenderState, public FastAlloc
|
||||||
/** An entry in the label stack. */
|
{
|
||||||
class LabelStackEntry {
|
private:
|
||||||
public:
|
/**
|
||||||
|
* An entry in the label stack.
|
||||||
|
*/
|
||||||
|
struct LabelStackEntry
|
||||||
|
{
|
||||||
const std::string label;
|
const std::string label;
|
||||||
std::string *prefix;
|
std::string *prefix;
|
||||||
bool labelPrinted;
|
bool labelPrinted;
|
||||||
LabelStackEntry(const std::string &_label,
|
LabelStackEntry(const std::string &_label, std::string *_prefix);
|
||||||
std::string *_prefix);
|
|
||||||
};
|
};
|
||||||
|
|
||||||
typedef std::list<LabelStackEntry> LabelStack;
|
typedef std::list<LabelStackEntry> LabelStack;
|
||||||
|
@ -328,35 +343,53 @@ class Packet : public FastAlloc, public Printable
|
||||||
PrintReqState(std::ostream &os, int verbosity = 0);
|
PrintReqState(std::ostream &os, int verbosity = 0);
|
||||||
~PrintReqState();
|
~PrintReqState();
|
||||||
|
|
||||||
/** Returns the current line prefix. */
|
/**
|
||||||
|
* Returns the current line prefix.
|
||||||
|
*/
|
||||||
const std::string &curPrefix() { return *curPrefixPtr; }
|
const std::string &curPrefix() { return *curPrefixPtr; }
|
||||||
|
|
||||||
/** Push a label onto the label stack, and prepend the given
|
/**
|
||||||
|
* Push a label onto the label stack, and prepend the given
|
||||||
* prefix string onto the current prefix. Labels will only be
|
* prefix string onto the current prefix. Labels will only be
|
||||||
* printed if an object within the label's scope is
|
* printed if an object within the label's scope is printed.
|
||||||
* printed. */
|
*/
|
||||||
void pushLabel(const std::string &lbl,
|
void pushLabel(const std::string &lbl,
|
||||||
const std::string &prefix = " ");
|
const std::string &prefix = " ");
|
||||||
/** Pop a label off the label stack. */
|
|
||||||
|
/**
|
||||||
|
* Pop a label off the label stack.
|
||||||
|
*/
|
||||||
void popLabel();
|
void popLabel();
|
||||||
/** Print all of the pending unprinted labels on the
|
|
||||||
|
/**
|
||||||
|
* Print all of the pending unprinted labels on the
|
||||||
* stack. Called by printObj(), so normally not called by
|
* stack. Called by printObj(), so normally not called by
|
||||||
* users unless bypassing printObj(). */
|
* users unless bypassing printObj().
|
||||||
|
*/
|
||||||
void printLabels();
|
void printLabels();
|
||||||
/** Print a Printable object to os, because it matched the
|
|
||||||
* address on a PrintReq. */
|
/**
|
||||||
|
* Print a Printable object to os, because it matched the
|
||||||
|
* address on a PrintReq.
|
||||||
|
*/
|
||||||
void printObj(Printable *obj);
|
void printObj(Printable *obj);
|
||||||
};
|
};
|
||||||
|
|
||||||
/** This packet's sender state. Devices should use dynamic_cast<>
|
/**
|
||||||
* to cast to the state appropriate to the sender. */
|
* This packet's sender state. Devices should use dynamic_cast<>
|
||||||
|
* to cast to the state appropriate to the sender. The intent of
|
||||||
|
* this variable is to allow a device to attach extra information
|
||||||
|
* to a request. A response packet must return the sender state
|
||||||
|
* that was attached to the original request (even if a new packet
|
||||||
|
* is created).
|
||||||
|
*/
|
||||||
SenderState *senderState;
|
SenderState *senderState;
|
||||||
|
|
||||||
/** Return the string name of the cmd field (for debugging and
|
/// Return the string name of the cmd field (for debugging and
|
||||||
* tracing). */
|
/// tracing).
|
||||||
const std::string &cmdString() const { return cmd.toString(); }
|
const std::string &cmdString() const { return cmd.toString(); }
|
||||||
|
|
||||||
/** Return the index of this command. */
|
/// Return the index of this command.
|
||||||
inline int cmdToIndex() const { return cmd.toInt(); }
|
inline int cmdToIndex() const { return cmd.toInt(); }
|
||||||
|
|
||||||
bool isRead() const { return cmd.isRead(); }
|
bool isRead() const { return cmd.isRead(); }
|
||||||
|
@ -373,88 +406,101 @@ class Packet : public FastAlloc, public Printable
|
||||||
bool isPrint() const { return cmd.isPrint(); }
|
bool isPrint() const { return cmd.isPrint(); }
|
||||||
|
|
||||||
// Snoop flags
|
// Snoop flags
|
||||||
void assertMemInhibit() { flags[MemInhibit] = true; }
|
void assertMemInhibit() { flags.set(MEM_INHIBIT); }
|
||||||
bool memInhibitAsserted() { return flags[MemInhibit]; }
|
bool memInhibitAsserted() { return flags.any(MEM_INHIBIT); }
|
||||||
void assertShared() { flags[Shared] = true; }
|
void assertShared() { flags.set(SHARED); }
|
||||||
bool sharedAsserted() { return flags[Shared]; }
|
bool sharedAsserted() { return flags.any(SHARED); }
|
||||||
|
|
||||||
// Special control flags
|
// Special control flags
|
||||||
void setExpressSnoop() { flags[ExpressSnoop] = true; }
|
void setExpressSnoop() { flags.set(EXPRESS_SNOOP); }
|
||||||
bool isExpressSnoop() { return flags[ExpressSnoop]; }
|
bool isExpressSnoop() { return flags.any(EXPRESS_SNOOP); }
|
||||||
void setSupplyExclusive() { flags[SupplyExclusive] = true; }
|
void setSupplyExclusive() { flags.set(SUPPLY_EXCLUSIVE); }
|
||||||
bool isSupplyExclusive() { return flags[SupplyExclusive]; }
|
bool isSupplyExclusive() { return flags.any(SUPPLY_EXCLUSIVE); }
|
||||||
|
|
||||||
// Network error conditions... encapsulate them as methods since
|
// Network error conditions... encapsulate them as methods since
|
||||||
// their encoding keeps changing (from result field to command
|
// their encoding keeps changing (from result field to command
|
||||||
// field, etc.)
|
// field, etc.)
|
||||||
void setNacked() { assert(isResponse()); cmd = MemCmd::NetworkNackError; }
|
void
|
||||||
void setBadAddress() { assert(isResponse()); cmd = MemCmd::BadAddressError; }
|
setNacked()
|
||||||
bool wasNacked() { return cmd == MemCmd::NetworkNackError; }
|
{
|
||||||
bool hadBadAddress() { return cmd == MemCmd::BadAddressError; }
|
assert(isResponse());
|
||||||
|
cmd = MemCmd::NetworkNackError;
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
setBadAddress()
|
||||||
|
{
|
||||||
|
assert(isResponse());
|
||||||
|
cmd = MemCmd::BadAddressError;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool wasNacked() const { return cmd == MemCmd::NetworkNackError; }
|
||||||
|
bool hadBadAddress() const { return cmd == MemCmd::BadAddressError; }
|
||||||
void copyError(Packet *pkt) { assert(pkt->isError()); cmd = pkt->cmd; }
|
void copyError(Packet *pkt) { assert(pkt->isError()); cmd = pkt->cmd; }
|
||||||
|
|
||||||
bool nic_pkt() { panic("Unimplemented"); M5_DUMMY_RETURN }
|
/// Accessor function to get the source index of the packet.
|
||||||
|
NodeID getSrc() const { assert(flags.any(VALID_SRC)); return src; }
|
||||||
|
/// Accessor function to set the source index of the packet.
|
||||||
|
void setSrc(NodeID _src) { src = _src; flags.set(VALID_SRC); }
|
||||||
|
/// Reset source field, e.g. to retransmit packet on different bus.
|
||||||
|
void clearSrc() { flags.clear(VALID_SRC); }
|
||||||
|
|
||||||
/** Accessor function that returns the source index of the packet. */
|
/// Accessor function for the destination index of the packet.
|
||||||
short getSrc() const { assert(srcValid); return src; }
|
NodeID getDest() const { assert(flags.any(VALID_DST)); return dest; }
|
||||||
void setSrc(short _src) { src = _src; srcValid = true; }
|
/// Accessor function to set the destination index of the packet.
|
||||||
/** Reset source field, e.g. to retransmit packet on different bus. */
|
void setDest(NodeID _dest) { dest = _dest; flags.set(VALID_DST); }
|
||||||
void clearSrc() { srcValid = false; }
|
|
||||||
|
|
||||||
/** Accessor function that returns the destination index of
|
Addr getAddr() const { assert(flags.all(VALID_ADDR)); return addr; }
|
||||||
the packet. */
|
int getSize() const { assert(flags.all(VALID_SIZE)); return size; }
|
||||||
short getDest() const { assert(destValid); return dest; }
|
Addr getOffset(int blkSize) const { return getAddr() & (Addr)(blkSize - 1); }
|
||||||
void setDest(short _dest) { dest = _dest; destValid = true; }
|
|
||||||
|
|
||||||
Addr getAddr() const { assert(addrSizeValid); return addr; }
|
/**
|
||||||
int getSize() const { assert(addrSizeValid); return size; }
|
* Constructor. Note that a Request object must be constructed
|
||||||
Addr getOffset(int blkSize) const { return addr & (Addr)(blkSize - 1); }
|
* first, but the Requests's physical address and size fields need
|
||||||
|
* not be valid. The command and destination addresses must be
|
||||||
/** Constructor. Note that a Request object must be constructed
|
* supplied.
|
||||||
* first, but the Requests's physical address and size fields
|
*/
|
||||||
* need not be valid. The command and destination addresses
|
Packet(Request *_req, MemCmd _cmd, NodeID _dest)
|
||||||
* must be supplied. */
|
: cmd(_cmd), req(_req), data(NULL), addr(_req->paddr),
|
||||||
Packet(Request *_req, MemCmd _cmd, short _dest)
|
size(_req->size), dest(_dest), time(curTick), senderState(NULL)
|
||||||
: cmd(_cmd), req(_req),
|
|
||||||
data(NULL), staticData(false), dynamicData(false), arrayData(false),
|
|
||||||
addr(_req->paddr), size(_req->size), dest(_dest),
|
|
||||||
addrSizeValid(_req->validPaddr), srcValid(false), destValid(true),
|
|
||||||
flags(0), time(curTick), senderState(NULL)
|
|
||||||
{
|
{
|
||||||
}
|
}
|
||||||
|
|
||||||
/** Alternate constructor if you are trying to create a packet with
|
/**
|
||||||
* a request that is for a whole block, not the address from the req.
|
* Alternate constructor if you are trying to create a packet with
|
||||||
* this allows for overriding the size/addr of the req.*/
|
* a request that is for a whole block, not the address from the
|
||||||
Packet(Request *_req, MemCmd _cmd, short _dest, int _blkSize)
|
* req. this allows for overriding the size/addr of the req.
|
||||||
: cmd(_cmd), req(_req),
|
*/
|
||||||
data(NULL), staticData(false), dynamicData(false), arrayData(false),
|
Packet(Request *_req, MemCmd _cmd, NodeID _dest, int _blkSize)
|
||||||
|
: cmd(_cmd), req(_req), data(NULL),
|
||||||
addr(_req->paddr & ~(_blkSize - 1)), size(_blkSize), dest(_dest),
|
addr(_req->paddr & ~(_blkSize - 1)), size(_blkSize), dest(_dest),
|
||||||
addrSizeValid(_req->validPaddr), srcValid(false), destValid(true),
|
time(curTick), senderState(NULL)
|
||||||
flags(0), time(curTick), senderState(NULL)
|
|
||||||
{
|
{
|
||||||
}
|
}
|
||||||
|
|
||||||
/** Alternate constructor for copying a packet. Copy all fields
|
/**
|
||||||
|
* Alternate constructor for copying a packet. Copy all fields
|
||||||
* *except* if the original packet's data was dynamic, don't copy
|
* *except* if the original packet's data was dynamic, don't copy
|
||||||
* that, as we can't guarantee that the new packet's lifetime is
|
* that, as we can't guarantee that the new packet's lifetime is
|
||||||
* less than that of the original packet. In this case the new
|
* less than that of the original packet. In this case the new
|
||||||
* packet should allocate its own data. */
|
* packet should allocate its own data.
|
||||||
Packet(Packet *origPkt, bool clearFlags = false)
|
*/
|
||||||
: cmd(origPkt->cmd), req(origPkt->req),
|
Packet(Packet *pkt, bool clearFlags = false)
|
||||||
data(origPkt->staticData ? origPkt->data : NULL),
|
: cmd(pkt->cmd), req(pkt->req),
|
||||||
staticData(origPkt->staticData),
|
data(pkt->flags.any(STATIC_DATA) ? pkt->data : NULL),
|
||||||
dynamicData(false), arrayData(false),
|
addr(pkt->addr), size(pkt->size), src(pkt->src), dest(pkt->dest),
|
||||||
addr(origPkt->addr), size(origPkt->size),
|
time(curTick), senderState(pkt->senderState)
|
||||||
src(origPkt->src), dest(origPkt->dest),
|
|
||||||
addrSizeValid(origPkt->addrSizeValid),
|
|
||||||
srcValid(origPkt->srcValid), destValid(origPkt->destValid),
|
|
||||||
flags(clearFlags ? 0 : origPkt->flags),
|
|
||||||
time(curTick), senderState(origPkt->senderState)
|
|
||||||
{
|
{
|
||||||
|
if (!clearFlags)
|
||||||
|
flags.set(pkt->flags & COPY_FLAGS);
|
||||||
|
|
||||||
|
flags.set(pkt->flags & (VALID_ADDR|VALID_SIZE|VALID_SRC|VALID_DST));
|
||||||
|
flags.set(pkt->flags & STATIC_DATA);
|
||||||
}
|
}
|
||||||
|
|
||||||
/** Destructor. */
|
/**
|
||||||
|
* clean up packet variables
|
||||||
|
*/
|
||||||
~Packet()
|
~Packet()
|
||||||
{
|
{
|
||||||
// If this is a request packet for which there's no response,
|
// If this is a request packet for which there's no response,
|
||||||
|
@ -462,27 +508,27 @@ class Packet : public FastAlloc, public Printable
|
||||||
// never get the chance.
|
// never get the chance.
|
||||||
if (req && isRequest() && !needsResponse())
|
if (req && isRequest() && !needsResponse())
|
||||||
delete req;
|
delete req;
|
||||||
if (staticData || dynamicData)
|
deleteData();
|
||||||
deleteData();
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/** Reinitialize packet address and size from the associated
|
/**
|
||||||
* Request object, and reset other fields that may have been
|
* Reinitialize packet address and size from the associated
|
||||||
* modified by a previous transaction. Typically called when a
|
* Request object, and reset other fields that may have been
|
||||||
* statically allocated Request/Packet pair is reused for
|
* modified by a previous transaction. Typically called when a
|
||||||
* multiple transactions. */
|
* statically allocated Request/Packet pair is reused for multiple
|
||||||
void reinitFromRequest() {
|
* transactions.
|
||||||
assert(req->validPaddr);
|
*/
|
||||||
|
void
|
||||||
|
reinitFromRequest()
|
||||||
|
{
|
||||||
|
assert(req->flags.any(Request::VALID_PADDR));
|
||||||
flags = 0;
|
flags = 0;
|
||||||
addr = req->paddr;
|
addr = req->paddr;
|
||||||
size = req->size;
|
size = req->size;
|
||||||
time = req->time;
|
time = req->time;
|
||||||
addrSizeValid = true;
|
|
||||||
if (dynamicData) {
|
flags.set(VALID_ADDR|VALID_SIZE);
|
||||||
deleteData();
|
deleteData();
|
||||||
dynamicData = false;
|
|
||||||
arrayData = false;
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
@ -491,23 +537,30 @@ class Packet : public FastAlloc, public Printable
|
||||||
* destination fields are *not* modified, as is appropriate for
|
* destination fields are *not* modified, as is appropriate for
|
||||||
* atomic accesses.
|
* atomic accesses.
|
||||||
*/
|
*/
|
||||||
void makeResponse()
|
void
|
||||||
|
makeResponse()
|
||||||
{
|
{
|
||||||
assert(needsResponse());
|
assert(needsResponse());
|
||||||
assert(isRequest());
|
assert(isRequest());
|
||||||
origCmd = cmd;
|
origCmd = cmd;
|
||||||
cmd = cmd.responseCommand();
|
cmd = cmd.responseCommand();
|
||||||
dest = src;
|
if (flags.any(VALID_SRC)) {
|
||||||
destValid = srcValid;
|
dest = src;
|
||||||
srcValid = false;
|
flags.set(VALID_DST);
|
||||||
|
flags.clear(VALID_SRC);
|
||||||
|
} else {
|
||||||
|
flags.clear(VALID_DST);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
void makeAtomicResponse()
|
void
|
||||||
|
makeAtomicResponse()
|
||||||
{
|
{
|
||||||
makeResponse();
|
makeResponse();
|
||||||
}
|
}
|
||||||
|
|
||||||
void makeTimingResponse()
|
void
|
||||||
|
makeTimingResponse()
|
||||||
{
|
{
|
||||||
makeResponse();
|
makeResponse();
|
||||||
}
|
}
|
||||||
|
@ -535,10 +588,9 @@ class Packet : public FastAlloc, public Printable
|
||||||
void
|
void
|
||||||
dataStatic(T *p)
|
dataStatic(T *p)
|
||||||
{
|
{
|
||||||
if(dynamicData)
|
assert(flags.none(STATIC_DATA|DYNAMIC_DATA|ARRAY_DATA));
|
||||||
dynamicData = false;
|
|
||||||
data = (PacketDataPtr)p;
|
data = (PacketDataPtr)p;
|
||||||
staticData = true;
|
flags.set(STATIC_DATA);
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
@ -549,10 +601,9 @@ class Packet : public FastAlloc, public Printable
|
||||||
void
|
void
|
||||||
dataDynamicArray(T *p)
|
dataDynamicArray(T *p)
|
||||||
{
|
{
|
||||||
assert(!staticData && !dynamicData);
|
assert(flags.none(STATIC_DATA|DYNAMIC_DATA|ARRAY_DATA));
|
||||||
data = (PacketDataPtr)p;
|
data = (PacketDataPtr)p;
|
||||||
dynamicData = true;
|
flags.set(DYNAMIC_DATA|ARRAY_DATA);
|
||||||
arrayData = true;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
|
@ -563,33 +614,39 @@ class Packet : public FastAlloc, public Printable
|
||||||
void
|
void
|
||||||
dataDynamic(T *p)
|
dataDynamic(T *p)
|
||||||
{
|
{
|
||||||
assert(!staticData && !dynamicData);
|
assert(flags.none(STATIC_DATA|DYNAMIC_DATA|ARRAY_DATA));
|
||||||
data = (PacketDataPtr)p;
|
data = (PacketDataPtr)p;
|
||||||
dynamicData = true;
|
flags.set(DYNAMIC_DATA);
|
||||||
arrayData = false;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/** get a pointer to the data ptr. */
|
/**
|
||||||
|
* get a pointer to the data ptr.
|
||||||
|
*/
|
||||||
template <typename T>
|
template <typename T>
|
||||||
T*
|
T*
|
||||||
getPtr()
|
getPtr()
|
||||||
{
|
{
|
||||||
assert(staticData || dynamicData);
|
assert(flags.any(STATIC_DATA|DYNAMIC_DATA));
|
||||||
return (T*)data;
|
return (T*)data;
|
||||||
}
|
}
|
||||||
|
|
||||||
/** return the value of what is pointed to in the packet. */
|
/**
|
||||||
|
* return the value of what is pointed to in the packet.
|
||||||
|
*/
|
||||||
template <typename T>
|
template <typename T>
|
||||||
T get();
|
T get();
|
||||||
|
|
||||||
/** set the value in the data pointer to v. */
|
/**
|
||||||
|
* set the value in the data pointer to v.
|
||||||
|
*/
|
||||||
template <typename T>
|
template <typename T>
|
||||||
void set(T v);
|
void set(T v);
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Copy data into the packet from the provided pointer.
|
* Copy data into the packet from the provided pointer.
|
||||||
*/
|
*/
|
||||||
void setData(uint8_t *p)
|
void
|
||||||
|
setData(uint8_t *p)
|
||||||
{
|
{
|
||||||
std::memcpy(getPtr<uint8_t>(), p, getSize());
|
std::memcpy(getPtr<uint8_t>(), p, getSize());
|
||||||
}
|
}
|
||||||
|
@ -598,7 +655,8 @@ class Packet : public FastAlloc, public Printable
|
||||||
* Copy data into the packet from the provided block pointer,
|
* Copy data into the packet from the provided block pointer,
|
||||||
* which is aligned to the given block size.
|
* which is aligned to the given block size.
|
||||||
*/
|
*/
|
||||||
void setDataFromBlock(uint8_t *blk_data, int blkSize)
|
void
|
||||||
|
setDataFromBlock(uint8_t *blk_data, int blkSize)
|
||||||
{
|
{
|
||||||
setData(blk_data + getOffset(blkSize));
|
setData(blk_data + getOffset(blkSize));
|
||||||
}
|
}
|
||||||
|
@ -607,7 +665,8 @@ class Packet : public FastAlloc, public Printable
|
||||||
* Copy data from the packet to the provided block pointer, which
|
* Copy data from the packet to the provided block pointer, which
|
||||||
* is aligned to the given block size.
|
* is aligned to the given block size.
|
||||||
*/
|
*/
|
||||||
void writeData(uint8_t *p)
|
void
|
||||||
|
writeData(uint8_t *p)
|
||||||
{
|
{
|
||||||
std::memcpy(p, getPtr<uint8_t>(), getSize());
|
std::memcpy(p, getPtr<uint8_t>(), getSize());
|
||||||
}
|
}
|
||||||
|
@ -615,7 +674,8 @@ class Packet : public FastAlloc, public Printable
|
||||||
/**
|
/**
|
||||||
* Copy data from the packet to the memory at the provided pointer.
|
* Copy data from the packet to the memory at the provided pointer.
|
||||||
*/
|
*/
|
||||||
void writeDataToBlock(uint8_t *blk_data, int blkSize)
|
void
|
||||||
|
writeDataToBlock(uint8_t *blk_data, int blkSize)
|
||||||
{
|
{
|
||||||
writeData(blk_data + getOffset(blkSize));
|
writeData(blk_data + getOffset(blkSize));
|
||||||
}
|
}
|
||||||
|
@ -624,10 +684,31 @@ class Packet : public FastAlloc, public Printable
|
||||||
* delete the data pointed to in the data pointer. Ok to call to
|
* delete the data pointed to in the data pointer. Ok to call to
|
||||||
* matter how data was allocted.
|
* matter how data was allocted.
|
||||||
*/
|
*/
|
||||||
void deleteData();
|
void
|
||||||
|
deleteData()
|
||||||
|
{
|
||||||
|
if (flags.any(ARRAY_DATA))
|
||||||
|
delete [] data;
|
||||||
|
else if (flags.any(DYNAMIC_DATA))
|
||||||
|
|
||||||
|
delete data;
|
||||||
|
|
||||||
|
flags.clear(STATIC_DATA|DYNAMIC_DATA|ARRAY_DATA);
|
||||||
|
data = NULL;
|
||||||
|
}
|
||||||
|
|
||||||
/** If there isn't data in the packet, allocate some. */
|
/** If there isn't data in the packet, allocate some. */
|
||||||
void allocate();
|
void
|
||||||
|
allocate()
|
||||||
|
{
|
||||||
|
if (data) {
|
||||||
|
assert(flags.none(STATIC_DATA|DYNAMIC_DATA));
|
||||||
|
} else {
|
||||||
|
flags.set(DYNAMIC_DATA|ARRAY_DATA);
|
||||||
|
data = new uint8_t[getSize()];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Check a functional request against a memory value represented
|
* Check a functional request against a memory value represented
|
||||||
|
@ -642,29 +723,32 @@ class Packet : public FastAlloc, public Printable
|
||||||
* Check a functional request against a memory value stored in
|
* Check a functional request against a memory value stored in
|
||||||
* another packet (i.e. an in-transit request or response).
|
* another packet (i.e. an in-transit request or response).
|
||||||
*/
|
*/
|
||||||
bool checkFunctional(PacketPtr otherPkt) {
|
bool
|
||||||
return checkFunctional(otherPkt,
|
checkFunctional(PacketPtr other)
|
||||||
otherPkt->getAddr(), otherPkt->getSize(),
|
{
|
||||||
otherPkt->hasData() ?
|
uint8_t *data = other->hasData() ? other->getPtr<uint8_t>() : NULL;
|
||||||
otherPkt->getPtr<uint8_t>() : NULL);
|
return checkFunctional(other, other->getAddr(), other->getSize(),
|
||||||
|
data);
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Push label for PrintReq (safe to call unconditionally).
|
* Push label for PrintReq (safe to call unconditionally).
|
||||||
*/
|
*/
|
||||||
void pushLabel(const std::string &lbl) {
|
void
|
||||||
if (isPrint()) {
|
pushLabel(const std::string &lbl)
|
||||||
dynamic_cast<PrintReqState*>(senderState)->pushLabel(lbl);
|
{
|
||||||
}
|
if (isPrint())
|
||||||
|
safe_cast<PrintReqState*>(senderState)->pushLabel(lbl);
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Pop label for PrintReq (safe to call unconditionally).
|
* Pop label for PrintReq (safe to call unconditionally).
|
||||||
*/
|
*/
|
||||||
void popLabel() {
|
void
|
||||||
if (isPrint()) {
|
popLabel()
|
||||||
dynamic_cast<PrintReqState*>(senderState)->popLabel();
|
{
|
||||||
}
|
if (isPrint())
|
||||||
|
safe_cast<PrintReqState*>(senderState)->popLabel();
|
||||||
}
|
}
|
||||||
|
|
||||||
void print(std::ostream &o, int verbosity = 0,
|
void print(std::ostream &o, int verbosity = 0,
|
||||||
|
|
|
@ -46,7 +46,7 @@ template <typename T>
|
||||||
inline T
|
inline T
|
||||||
Packet::get()
|
Packet::get()
|
||||||
{
|
{
|
||||||
assert(staticData || dynamicData);
|
assert(flags.any(STATIC_DATA|DYNAMIC_DATA));
|
||||||
assert(sizeof(T) <= size);
|
assert(sizeof(T) <= size);
|
||||||
return TheISA::gtoh(*(T*)data);
|
return TheISA::gtoh(*(T*)data);
|
||||||
}
|
}
|
||||||
|
@ -56,6 +56,7 @@ template <typename T>
|
||||||
inline void
|
inline void
|
||||||
Packet::set(T v)
|
Packet::set(T v)
|
||||||
{
|
{
|
||||||
|
assert(flags.any(STATIC_DATA|DYNAMIC_DATA));
|
||||||
assert(sizeof(T) <= size);
|
assert(sizeof(T) <= size);
|
||||||
*(T*)data = TheISA::htog(v);
|
*(T*)data = TheISA::htog(v);
|
||||||
}
|
}
|
||||||
|
|
|
@ -39,79 +39,103 @@
|
||||||
#ifndef __MEM_REQUEST_HH__
|
#ifndef __MEM_REQUEST_HH__
|
||||||
#define __MEM_REQUEST_HH__
|
#define __MEM_REQUEST_HH__
|
||||||
|
|
||||||
|
#include <cassert>
|
||||||
|
|
||||||
#include "base/fast_alloc.hh"
|
#include "base/fast_alloc.hh"
|
||||||
|
#include "base/flags.hh"
|
||||||
#include "sim/host.hh"
|
#include "sim/host.hh"
|
||||||
#include "sim/core.hh"
|
#include "sim/core.hh"
|
||||||
|
|
||||||
#include <cassert>
|
|
||||||
|
|
||||||
class Request;
|
class Request;
|
||||||
|
|
||||||
typedef Request* RequestPtr;
|
typedef Request* RequestPtr;
|
||||||
|
|
||||||
|
|
||||||
/** ASI information for this request if it exsits. */
|
|
||||||
const uint32_t ASI_BITS = 0x000FF;
|
|
||||||
/** The request is a Load locked/store conditional. */
|
|
||||||
const uint32_t LOCKED = 0x00100;
|
|
||||||
/** The virtual address is also the physical address. */
|
|
||||||
const uint32_t PHYSICAL = 0x00200;
|
|
||||||
/** The request is an ALPHA VPTE pal access (hw_ld). */
|
|
||||||
const uint32_t VPTE = 0x00400;
|
|
||||||
/** Use the alternate mode bits in ALPHA. */
|
|
||||||
const uint32_t ALTMODE = 0x00800;
|
|
||||||
/** The request is to an uncacheable address. */
|
|
||||||
const uint32_t UNCACHEABLE = 0x01000;
|
|
||||||
/** The request should not cause a page fault. */
|
|
||||||
const uint32_t NO_FAULT = 0x02000;
|
|
||||||
/** The request should be prefetched into the exclusive state. */
|
|
||||||
const uint32_t PF_EXCLUSIVE = 0x10000;
|
|
||||||
/** The request should be marked as LRU. */
|
|
||||||
const uint32_t EVICT_NEXT = 0x20000;
|
|
||||||
/** The request should ignore unaligned access faults */
|
|
||||||
const uint32_t NO_ALIGN_FAULT = 0x40000;
|
|
||||||
/** The request was an instruction read. */
|
|
||||||
const uint32_t INST_READ = 0x80000;
|
|
||||||
/** This request is for a memory swap. */
|
|
||||||
const uint32_t MEM_SWAP = 0x100000;
|
|
||||||
const uint32_t MEM_SWAP_COND = 0x200000;
|
|
||||||
/** The request should ignore unaligned access faults */
|
|
||||||
const uint32_t NO_HALF_WORD_ALIGN_FAULT = 0x400000;
|
|
||||||
|
|
||||||
|
|
||||||
class Request : public FastAlloc
|
class Request : public FastAlloc
|
||||||
{
|
{
|
||||||
|
public:
|
||||||
|
typedef uint32_t FlagsType;
|
||||||
|
typedef ::Flags<FlagsType> Flags;
|
||||||
|
|
||||||
|
/** ASI information for this request if it exists. */
|
||||||
|
static const FlagsType ASI_BITS = 0x000000FF;
|
||||||
|
/** The request is a Load locked/store conditional. */
|
||||||
|
static const FlagsType LOCKED = 0x00000100;
|
||||||
|
/** The virtual address is also the physical address. */
|
||||||
|
static const FlagsType PHYSICAL = 0x00000200;
|
||||||
|
/** The request is an ALPHA VPTE pal access (hw_ld). */
|
||||||
|
static const FlagsType VPTE = 0x00000400;
|
||||||
|
/** Use the alternate mode bits in ALPHA. */
|
||||||
|
static const FlagsType ALTMODE = 0x00000800;
|
||||||
|
/** The request is to an uncacheable address. */
|
||||||
|
static const FlagsType UNCACHEABLE = 0x00001000;
|
||||||
|
/** The request should not cause a page fault. */
|
||||||
|
static const FlagsType NO_FAULT = 0x00002000;
|
||||||
|
/** The request should be prefetched into the exclusive state. */
|
||||||
|
static const FlagsType PF_EXCLUSIVE = 0x00010000;
|
||||||
|
/** The request should be marked as LRU. */
|
||||||
|
static const FlagsType EVICT_NEXT = 0x00020000;
|
||||||
|
/** The request should ignore unaligned access faults */
|
||||||
|
static const FlagsType NO_ALIGN_FAULT = 0x00040000;
|
||||||
|
/** The request was an instruction read. */
|
||||||
|
static const FlagsType INST_READ = 0x00080000;
|
||||||
|
/** This request is for a memory swap. */
|
||||||
|
static const FlagsType MEM_SWAP = 0x00100000;
|
||||||
|
static const FlagsType MEM_SWAP_COND = 0x00200000;
|
||||||
|
/** The request should ignore unaligned access faults */
|
||||||
|
static const FlagsType NO_HALF_WORD_ALIGN_FAULT = 0x00400000;
|
||||||
|
/** This request is to a memory mapped register. */
|
||||||
|
static const FlagsType MMAPED_IPR = 0x00800000;
|
||||||
|
|
||||||
|
private:
|
||||||
|
static const FlagsType PUBLIC_FLAGS = 0x00FF3FFF;
|
||||||
|
static const FlagsType PRIVATE_FLAGS = 0xFF000000;
|
||||||
|
|
||||||
|
/** Whether or not the size is valid. */
|
||||||
|
static const FlagsType VALID_SIZE = 0x01000000;
|
||||||
|
/** Whether or not paddr is valid (has been written yet). */
|
||||||
|
static const FlagsType VALID_PADDR = 0x02000000;
|
||||||
|
/** Whether or not the vaddr & asid are valid. */
|
||||||
|
static const FlagsType VALID_VADDR = 0x04000000;
|
||||||
|
/** Whether or not the pc is valid. */
|
||||||
|
static const FlagsType VALID_PC = 0x10000000;
|
||||||
|
/** Whether or not the context ID is valid. */
|
||||||
|
static const FlagsType VALID_CONTEXT_ID = 0x20000000;
|
||||||
|
static const FlagsType VALID_THREAD_ID = 0x40000000;
|
||||||
|
/** Whether or not the sc result is valid. */
|
||||||
|
static const FlagsType VALID_EXTRA_DATA = 0x80000000;
|
||||||
|
|
||||||
private:
|
private:
|
||||||
/**
|
/**
|
||||||
* The physical address of the request. Valid only if validPaddr
|
* The physical address of the request. Valid only if validPaddr
|
||||||
* is set. */
|
* is set.
|
||||||
|
*/
|
||||||
Addr paddr;
|
Addr paddr;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* The size of the request. This field must be set when vaddr or
|
* The size of the request. This field must be set when vaddr or
|
||||||
* paddr is written via setVirt() or setPhys(), so it is always
|
* paddr is written via setVirt() or setPhys(), so it is always
|
||||||
* valid as long as one of the address fields is valid. */
|
* valid as long as one of the address fields is valid.
|
||||||
|
*/
|
||||||
int size;
|
int size;
|
||||||
|
|
||||||
/** Flag structure for the request. */
|
/** Flag structure for the request. */
|
||||||
uint32_t flags;
|
Flags flags;
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* The time this request was started. Used to calculate
|
* The time this request was started. Used to calculate
|
||||||
* latencies. This field is set to curTick any time paddr or vaddr
|
* latencies. This field is set to curTick any time paddr or vaddr
|
||||||
* is written. */
|
* is written.
|
||||||
|
*/
|
||||||
Tick time;
|
Tick time;
|
||||||
|
|
||||||
/** The address space ID. */
|
/** The address space ID. */
|
||||||
int asid;
|
int asid;
|
||||||
|
|
||||||
/** This request is to a memory mapped register. */
|
|
||||||
bool mmapedIpr;
|
|
||||||
|
|
||||||
/** The virtual address of the request. */
|
/** The virtual address of the request. */
|
||||||
Addr vaddr;
|
Addr vaddr;
|
||||||
|
|
||||||
/** Extra data for the request, such as the return value of
|
/**
|
||||||
|
* Extra data for the request, such as the return value of
|
||||||
* store conditional or the compare value for a CAS. */
|
* store conditional or the compare value for a CAS. */
|
||||||
uint64_t extraData;
|
uint64_t extraData;
|
||||||
|
|
||||||
|
@ -123,170 +147,295 @@ class Request : public FastAlloc
|
||||||
/** program counter of initiating access; for tracing/debugging */
|
/** program counter of initiating access; for tracing/debugging */
|
||||||
Addr pc;
|
Addr pc;
|
||||||
|
|
||||||
/** Whether or not paddr is valid (has been written yet). */
|
|
||||||
bool validPaddr;
|
|
||||||
/** Whether or not the asid & vaddr are valid. */
|
|
||||||
bool validAsidVaddr;
|
|
||||||
/** Whether or not the sc result is valid. */
|
|
||||||
bool validExData;
|
|
||||||
/** Whether or not the context ID is valid. */
|
|
||||||
bool validContextAndThreadIds;
|
|
||||||
/** Whether or not the pc is valid. */
|
|
||||||
bool validPC;
|
|
||||||
|
|
||||||
public:
|
public:
|
||||||
/** Minimal constructor. No fields are initialized. */
|
/** Minimal constructor. No fields are initialized. */
|
||||||
Request()
|
Request()
|
||||||
: validPaddr(false), validAsidVaddr(false),
|
|
||||||
validExData(false), validContextAndThreadIds(false), validPC(false)
|
|
||||||
{}
|
{}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Constructor for physical (e.g. device) requests. Initializes
|
* Constructor for physical (e.g. device) requests. Initializes
|
||||||
* just physical address, size, flags, and timestamp (to curTick).
|
* just physical address, size, flags, and timestamp (to curTick).
|
||||||
* These fields are adequate to perform a request. */
|
* These fields are adequate to perform a request.
|
||||||
Request(Addr _paddr, int _size, int _flags)
|
*/
|
||||||
: validContextAndThreadIds(false)
|
Request(Addr paddr, int size, Flags flags)
|
||||||
{ setPhys(_paddr, _size, _flags); }
|
|
||||||
|
|
||||||
Request(int _asid, Addr _vaddr, int _size, int _flags, Addr _pc,
|
|
||||||
int _context_id, int _thread_id)
|
|
||||||
{
|
{
|
||||||
setThreadContext(_context_id, _thread_id);
|
setPhys(paddr, size, flags);
|
||||||
setVirt(_asid, _vaddr, _size, _flags, _pc);
|
}
|
||||||
|
|
||||||
|
Request(int asid, Addr vaddr, int size, Flags flags, Addr pc,
|
||||||
|
int cid, int tid)
|
||||||
|
{
|
||||||
|
setThreadContext(cid, tid);
|
||||||
|
setVirt(asid, vaddr, size, flags, pc);
|
||||||
}
|
}
|
||||||
|
|
||||||
~Request() {} // for FastAlloc
|
~Request() {} // for FastAlloc
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Set up CPU and thread numbers. */
|
* Set up CPU and thread numbers.
|
||||||
void setThreadContext(int _context_id, int _thread_id)
|
*/
|
||||||
|
void
|
||||||
|
setThreadContext(int context_id, int thread_id)
|
||||||
{
|
{
|
||||||
_contextId = _context_id;
|
_contextId = context_id;
|
||||||
_threadId = _thread_id;
|
_threadId = thread_id;
|
||||||
validContextAndThreadIds = true;
|
flags.set(VALID_CONTEXT_ID|VALID_THREAD_ID);
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Set up a physical (e.g. device) request in a previously
|
* Set up a physical (e.g. device) request in a previously
|
||||||
* allocated Request object. */
|
* allocated Request object.
|
||||||
void setPhys(Addr _paddr, int _size, int _flags)
|
*/
|
||||||
|
void
|
||||||
|
setPhys(Addr _paddr, int _size, Flags _flags)
|
||||||
{
|
{
|
||||||
assert(_size >= 0);
|
assert(_size >= 0);
|
||||||
paddr = _paddr;
|
paddr = _paddr;
|
||||||
size = _size;
|
size = _size;
|
||||||
flags = _flags;
|
|
||||||
time = curTick;
|
time = curTick;
|
||||||
validPaddr = true;
|
|
||||||
validAsidVaddr = false;
|
flags.set(VALID_PADDR|VALID_SIZE);
|
||||||
validPC = false;
|
flags.clear(VALID_VADDR|VALID_PC|VALID_EXTRA_DATA|MMAPED_IPR);
|
||||||
validExData = false;
|
flags.update(_flags, PUBLIC_FLAGS);
|
||||||
mmapedIpr = false;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* Set up a virtual (e.g., CPU) request in a previously
|
* Set up a virtual (e.g., CPU) request in a previously
|
||||||
* allocated Request object. */
|
* allocated Request object.
|
||||||
void setVirt(int _asid, Addr _vaddr, int _size, int _flags, Addr _pc)
|
*/
|
||||||
|
void
|
||||||
|
setVirt(int _asid, Addr _vaddr, int _size, Flags _flags, Addr _pc)
|
||||||
{
|
{
|
||||||
assert(_size >= 0);
|
assert(_size >= 0);
|
||||||
asid = _asid;
|
asid = _asid;
|
||||||
vaddr = _vaddr;
|
vaddr = _vaddr;
|
||||||
size = _size;
|
size = _size;
|
||||||
flags = _flags;
|
|
||||||
pc = _pc;
|
pc = _pc;
|
||||||
time = curTick;
|
time = curTick;
|
||||||
validPaddr = false;
|
|
||||||
validAsidVaddr = true;
|
flags.set(VALID_VADDR|VALID_SIZE|VALID_PC);
|
||||||
validPC = true;
|
flags.clear(VALID_PADDR|VALID_EXTRA_DATA|MMAPED_IPR);
|
||||||
validExData = false;
|
flags.update(_flags, PUBLIC_FLAGS);
|
||||||
mmapedIpr = false;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/** Set just the physical address. This should only be used to
|
/**
|
||||||
|
* Set just the physical address. This should only be used to
|
||||||
* record the result of a translation, and thus the vaddr must be
|
* record the result of a translation, and thus the vaddr must be
|
||||||
* valid before this method is called. Otherwise, use setPhys()
|
* valid before this method is called. Otherwise, use setPhys()
|
||||||
* to guarantee that the size and flags are also set.
|
* to guarantee that the size and flags are also set.
|
||||||
*/
|
*/
|
||||||
void setPaddr(Addr _paddr)
|
void
|
||||||
|
setPaddr(Addr _paddr)
|
||||||
{
|
{
|
||||||
assert(validAsidVaddr);
|
assert(flags.any(VALID_VADDR));
|
||||||
paddr = _paddr;
|
paddr = _paddr;
|
||||||
validPaddr = true;
|
flags.set(VALID_PADDR);
|
||||||
}
|
}
|
||||||
|
|
||||||
/** Accessor for paddr. */
|
/**
|
||||||
Addr getPaddr() { assert(validPaddr); return paddr; }
|
* Accessor for paddr.
|
||||||
|
*/
|
||||||
|
Addr
|
||||||
|
getPaddr()
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PADDR));
|
||||||
|
return paddr;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Accessor for size.
|
||||||
|
*/
|
||||||
|
int
|
||||||
|
getSize()
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_SIZE));
|
||||||
|
return size;
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor for size. */
|
|
||||||
int getSize() { assert(validPaddr || validAsidVaddr); return size; }
|
|
||||||
/** Accessor for time. */
|
/** Accessor for time. */
|
||||||
Tick getTime() { assert(validPaddr || validAsidVaddr); return time; }
|
Tick
|
||||||
void resetTime() { assert(validPaddr || validAsidVaddr); time = curTick; }
|
getTime()
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PADDR|VALID_VADDR));
|
||||||
|
return time;
|
||||||
|
}
|
||||||
|
|
||||||
void
|
void
|
||||||
setTime(Tick when)
|
setTime(Tick when)
|
||||||
{
|
{
|
||||||
assert(validPaddr || validAsidVaddr);
|
assert(flags.any(VALID_PADDR|VALID_VADDR));
|
||||||
time = when;
|
time = when;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
void resetTime() { setTime(curTick); }
|
||||||
|
|
||||||
/** Accessor for flags. */
|
/** Accessor for flags. */
|
||||||
uint32_t getFlags() { assert(validPaddr || validAsidVaddr); return flags; }
|
Flags
|
||||||
/** Accessor for paddr. */
|
getFlags()
|
||||||
void setFlags(uint32_t _flags)
|
{
|
||||||
{ assert(validPaddr || validAsidVaddr); flags = _flags; }
|
assert(flags.any(VALID_PADDR|VALID_VADDR));
|
||||||
|
return flags & PUBLIC_FLAGS;
|
||||||
|
}
|
||||||
|
|
||||||
|
Flags
|
||||||
|
anyFlags(Flags _flags)
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PADDR|VALID_VADDR));
|
||||||
|
assert(_flags.none(~PUBLIC_FLAGS));
|
||||||
|
return flags.any(_flags);
|
||||||
|
}
|
||||||
|
|
||||||
|
Flags
|
||||||
|
allFlags(Flags _flags)
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PADDR|VALID_VADDR));
|
||||||
|
assert(_flags.none(~PUBLIC_FLAGS));
|
||||||
|
return flags.all(_flags);
|
||||||
|
}
|
||||||
|
|
||||||
|
/** Accessor for flags. */
|
||||||
|
void
|
||||||
|
setFlags(Flags _flags)
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PADDR|VALID_VADDR));
|
||||||
|
assert(_flags.none(~PUBLIC_FLAGS));
|
||||||
|
flags.set(_flags);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
clearFlags(Flags _flags)
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PADDR|VALID_VADDR));
|
||||||
|
assert(_flags.none(~PUBLIC_FLAGS));
|
||||||
|
flags.clear(_flags);
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
clearFlags()
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PADDR|VALID_VADDR));
|
||||||
|
flags.clear(PUBLIC_FLAGS);
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for vaddr.*/
|
/** Accessor function for vaddr.*/
|
||||||
Addr getVaddr() { assert(validAsidVaddr); return vaddr; }
|
Addr
|
||||||
|
getVaddr()
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_VADDR));
|
||||||
|
return vaddr;
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for asid.*/
|
/** Accessor function for asid.*/
|
||||||
int getAsid() { assert(validAsidVaddr); return asid; }
|
int
|
||||||
|
getAsid()
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_VADDR));
|
||||||
|
return asid;
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for asi.*/
|
/** Accessor function for asi.*/
|
||||||
uint8_t getAsi() { assert(validAsidVaddr); return flags & ASI_BITS; }
|
uint8_t
|
||||||
|
getAsi()
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_VADDR));
|
||||||
|
return flags & ASI_BITS;
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for asi.*/
|
/** Accessor function for asi.*/
|
||||||
void setAsi(uint8_t a)
|
void
|
||||||
{ assert(validAsidVaddr); flags = (flags & ~ASI_BITS) | a; }
|
setAsi(uint8_t a)
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_VADDR));
|
||||||
|
flags.update(a, ASI_BITS);
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for asi.*/
|
/** Accessor function for asi.*/
|
||||||
bool isMmapedIpr() { assert(validPaddr); return mmapedIpr; }
|
bool
|
||||||
|
isMmapedIpr()
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PADDR));
|
||||||
|
return flags.any(MMAPED_IPR);
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for asi.*/
|
/** Accessor function for asi.*/
|
||||||
void setMmapedIpr(bool r) { assert(validAsidVaddr); mmapedIpr = r; }
|
void
|
||||||
|
setMmapedIpr(bool r)
|
||||||
|
{
|
||||||
|
assert(VALID_VADDR);
|
||||||
|
flags.set(MMAPED_IPR);
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function to check if sc result is valid. */
|
/** Accessor function to check if sc result is valid. */
|
||||||
bool extraDataValid() { return validExData; }
|
bool
|
||||||
|
extraDataValid()
|
||||||
|
{
|
||||||
|
return flags.any(VALID_EXTRA_DATA);
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for store conditional return value.*/
|
/** Accessor function for store conditional return value.*/
|
||||||
uint64_t getExtraData() { assert(validExData); return extraData; }
|
uint64_t
|
||||||
|
getExtraData() const
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_EXTRA_DATA));
|
||||||
|
return extraData;
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for store conditional return value.*/
|
/** Accessor function for store conditional return value.*/
|
||||||
void setExtraData(uint64_t _extraData)
|
void
|
||||||
{ extraData = _extraData; validExData = true; }
|
setExtraData(uint64_t _extraData)
|
||||||
|
{
|
||||||
|
extraData = _extraData;
|
||||||
|
flags.set(VALID_EXTRA_DATA);
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for context ID.*/
|
/** Accessor function for context ID.*/
|
||||||
int contextId() { assert(validContextAndThreadIds); return _contextId; }
|
int
|
||||||
|
contextId() const
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_CONTEXT_ID));
|
||||||
|
return _contextId;
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for thread ID. */
|
/** Accessor function for thread ID. */
|
||||||
int threadId() { assert(validContextAndThreadIds); return _threadId; }
|
int
|
||||||
|
threadId() const
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_THREAD_ID));
|
||||||
|
return _threadId;
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor function for pc.*/
|
/** Accessor function for pc.*/
|
||||||
Addr getPC() { assert(validPC); return pc; }
|
Addr
|
||||||
|
getPC() const
|
||||||
|
{
|
||||||
|
assert(flags.any(VALID_PC));
|
||||||
|
return pc;
|
||||||
|
}
|
||||||
|
|
||||||
/** Accessor Function to Check Cacheability. */
|
/** Accessor Function to Check Cacheability. */
|
||||||
bool isUncacheable() { return (getFlags() & UNCACHEABLE) != 0; }
|
bool isUncacheable() const { return flags.any(UNCACHEABLE); }
|
||||||
|
bool isInstRead() const { return flags.any(INST_READ); }
|
||||||
|
bool isLocked() const { return flags.any(LOCKED); }
|
||||||
|
bool isSwap() const { return flags.any(MEM_SWAP|MEM_SWAP_COND); }
|
||||||
|
bool isCondSwap() const { return flags.any(MEM_SWAP_COND); }
|
||||||
|
|
||||||
bool isInstRead() { return (getFlags() & INST_READ) != 0; }
|
bool
|
||||||
|
isMisaligned() const
|
||||||
|
{
|
||||||
|
if (flags.any(NO_ALIGN_FAULT))
|
||||||
|
return false;
|
||||||
|
|
||||||
bool isLocked() { return (getFlags() & LOCKED) != 0; }
|
if ((vaddr & 0x1))
|
||||||
|
return true;
|
||||||
|
|
||||||
bool isSwap() { return (getFlags() & MEM_SWAP ||
|
if (flags.any(NO_HALF_WORD_ALIGN_FAULT))
|
||||||
getFlags() & MEM_SWAP_COND); }
|
return false;
|
||||||
|
|
||||||
bool isCondSwap() { return (getFlags() & MEM_SWAP_COND) != 0; }
|
if ((vaddr & 0x2))
|
||||||
|
return true;
|
||||||
|
|
||||||
bool inline isMisaligned() {return (!(getFlags() & NO_ALIGN_FAULT) &&
|
return false;
|
||||||
((vaddr & 1) ||
|
}
|
||||||
(!(getFlags() & NO_HALF_WORD_ALIGN_FAULT)
|
|
||||||
&& (vaddr & 0x2))));}
|
|
||||||
|
|
||||||
friend class Packet;
|
friend class Packet;
|
||||||
};
|
};
|
||||||
|
|
Loading…
Reference in a new issue