diff options
| author | Gabe Black <gabeblack@google.com> | 2019-09-11 13:45:24 -0700 |
|---|---|---|
| committer | Gabe Black <gabeblack@google.com> | 2019-10-02 01:28:32 +0000 |
| commit | f89f85d255e2192fa2aab5dd168eb9372c41d09c (patch) | |
| tree | a6171c32b16ea29870035f6062b4abbae5e8d017 /src | |
| parent | 5fdaa0d719cb1d2c6847ff1ee69fa54ceae55172 (diff) | |
| download | gem5-f89f85d255e2192fa2aab5dd168eb9372c41d09c.tar.xz | |
x86: Switch from MessageReq and Resp to WriteReq and Resp.
Originally MessageReq was intended to mark a packet as a holding a
message destined for a particular recipient and which would not
interact with other packets.
This is similar to the way a WriteReq would behave if writing to a
device register which needs to be updated atomically. Also, while the
memory system *could* recognize a MessageReq and know that it didn't
need to interact with other packets, that was never implemented.
Change-Id: Ie54301d1d8820e206d6bae96e200ae8c71d2d784
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/20823
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/x86/interrupts.cc | 4 | ||||
| -rw-r--r-- | src/arch/x86/intmessage.hh | 2 | ||||
| -rw-r--r-- | src/dev/x86/intdev.hh | 2 |
3 files changed, 4 insertions, 4 deletions
diff --git a/src/arch/x86/interrupts.cc b/src/arch/x86/interrupts.cc index 402b91200..392135def 100644 --- a/src/arch/x86/interrupts.cc +++ b/src/arch/x86/interrupts.cc @@ -307,7 +307,7 @@ Tick X86ISA::Interrupts::recvMessage(PacketPtr pkt) { Addr offset = pkt->getAddr() - x86InterruptAddress(initialApicId, 0); - assert(pkt->cmd == MemCmd::MessageReq); + assert(pkt->cmd == MemCmd::WriteReq); switch(offset) { case 0: @@ -335,7 +335,7 @@ bool X86ISA::Interrupts::recvResponse(PacketPtr pkt) { assert(!pkt->isError()); - assert(pkt->cmd == MemCmd::MessageResp); + assert(pkt->cmd == MemCmd::WriteResp); if (--pendingIPIs == 0) { InterruptCommandRegLow low = regs[APIC_INTERRUPT_COMMAND_LOW]; // Record that the ICR is now idle. diff --git a/src/arch/x86/intmessage.hh b/src/arch/x86/intmessage.hh index 8ec60b2aa..429b0f9f6 100644 --- a/src/arch/x86/intmessage.hh +++ b/src/arch/x86/intmessage.hh @@ -84,7 +84,7 @@ namespace X86ISA size, Request::UNCACHEABLE, Request::intMasterId); - PacketPtr pkt = new Packet(req, MemCmd::MessageReq); + PacketPtr pkt = new Packet(req, MemCmd::WriteReq); pkt->allocate(); return pkt; } diff --git a/src/dev/x86/intdev.hh b/src/dev/x86/intdev.hh index f71c9ff9d..348ec57b8 100644 --- a/src/dev/x86/intdev.hh +++ b/src/dev/x86/intdev.hh @@ -76,7 +76,7 @@ class IntSlavePort : public SimpleTimingPort Tick recvAtomic(PacketPtr pkt) { - panic_if(pkt->cmd != MemCmd::MessageReq, + panic_if(pkt->cmd != MemCmd::WriteReq, "%s received unexpected command %s from %s.\n", name(), pkt->cmd.toString(), getPeer()); pkt->headerDelay = pkt->payloadDelay = 0; |