diff options
author | Ali Saidi <saidi@eecs.umich.edu> | 2006-05-30 18:57:42 -0400 |
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committer | Ali Saidi <saidi@eecs.umich.edu> | 2006-05-30 18:57:42 -0400 |
commit | 09d8a1e1252eba582fd8450ee31e784b54910f7d (patch) | |
tree | 90790e6ea9e1575eb2a81715a33eddccb091bd82 /src/dev/io_device.hh | |
parent | e60dc5195ce36bc055e9ea6899df9968bccafe9f (diff) | |
download | gem5-09d8a1e1252eba582fd8450ee31e784b54910f7d.tar.xz |
Add a very poor implementation of dealing with retries on timing requests. It is especially slow with tracing on since
it ends up being O(N^2). But it's probably going to have to change for the real bus anyway, so it should be rewritten then
Change recvRetry() to not accept a packet. Sendtiming should be called again (and can respond with false or true)
Removed Port Blocked/Unblocked and replaced with sendRetry().
Remove possibility of packet mangling if packet is going to be refused anyway in bridge
src/cpu/simple/atomic.cc:
src/cpu/simple/atomic.hh:
src/cpu/simple/timing.cc:
src/cpu/simple/timing.hh:
Change recvRetry() to not accept a packet. Sendtiming should be called again (and can respond with false or true)
src/dev/io_device.cc:
src/dev/io_device.hh:
Make DMA Timing requests/responses work.
Change recvRetry() to not accept a packet. Sendtiming should be called again (and can respond with false or true)
src/mem/bridge.cc:
src/mem/bridge.hh:
Change recvRetry() to not accept a packet. Sendtiming should be called again (and can respond with false or true)
Removed Port Blocked/Unblocked and replaced with sendRetry().
Remove posibility of packet mangling if packet is going to be refused anyway.
src/mem/bus.cc:
src/mem/bus.hh:
Add a very poor implementation of dealing with retries on timing requests. It is especially slow with tracing on since
it ends up being O(N^2). But it's probably going to have to change for the real bus anyway, so it should be rewritten then
src/mem/port.hh:
Change recvRetry() to not accept a packet. Sendtiming should be called again (and can respond with false or true)
Removed Blocked/Unblocked port status, their functionality is really duplicated in the recvRetry() method
--HG--
extra : convert_revision : fab613404be54bfa7a4c67572bae7b559169e573
Diffstat (limited to 'src/dev/io_device.hh')
-rw-r--r-- | src/dev/io_device.hh | 26 |
1 files changed, 4 insertions, 22 deletions
diff --git a/src/dev/io_device.hh b/src/dev/io_device.hh index 74730ad92..5836da3c9 100644 --- a/src/dev/io_device.hh +++ b/src/dev/io_device.hh @@ -105,8 +105,9 @@ class PioPort : public Port void sendTiming(Packet *pkt, Tick time) { new PioPort::SendEvent(this, pkt, time); } - /** This function pops the last element off the transmit list and sends it.*/ - virtual Packet *recvRetry(); + /** This function is notification that the device should attempt to send a + * packet again. */ + virtual void recvRetry(); public: PioPort(PioDevice *dev, Platform *p); @@ -146,28 +147,11 @@ class DmaPort : public Port virtual void recvStatusChange(Status status) { ; } - virtual Packet *recvRetry() ; + virtual void recvRetry() ; virtual void getDeviceAddressRanges(AddrRangeList &resp, AddrRangeList &snoop) { resp.clear(); snoop.clear(); } - class SendEvent : public Event - { - DmaPort *port; - Packet *packet; - - SendEvent(PioPort *p, Packet *pkt, Tick t) - : Event(&mainEventQueue), packet(pkt) - { schedule(curTick + t); } - - virtual void process(); - - virtual const char *description() - { return "Future scheduled sendTiming event"; } - - friend class DmaPort; - }; - void sendDma(Packet *pkt); public: @@ -178,8 +162,6 @@ class DmaPort : public Port bool dmaPending() { return pendingCount > 0; } - friend class DmaPort::SendEvent; - }; /** |