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2017-02-09dev: net/i8254xGBe add two more wakeup registers to ignoreBjoern A. Zeeb
There are drivers writing to WUFC uncondtionally of anything. In order to not panic gem5 in these cases, ignore writes to WUFC and WUS as we do for WUC. Similarly return 0 (default reset value) on reads. Testing Done: Booted in FS with such a driver revision which would previously panic and now boots fine. Reviewed at http://reviews.gem5.org/r/3791/ Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
2016-11-09style: [patch 3/22] reduce include dependencies in some headersBrandon Potter
Used cppclean to help identify useless includes and removed them. This involved erroneously included headers, but also cases where forward declarations could have been used rather than a full include.
2016-12-06dev: Fix race conditions at terminating dist-gem5 simulationsGabor Dozsa
Two problems may arise when a distributed gem5 simulation terminates: (i) simulation thread(s) may get stuck in an incomplete synchronisation event which prohibits processing the simulation exit event; and (ii) a stale receiver thread may try to access objects that have already been deleted while exiting gem5. This patch terminates receive threads properly and aborts the processing of any incomplete synchronisation event. Change-Id: I72337aa12c7926cece00309640d478b61e55a429 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
2016-11-29dev: Fix buffer length when unserializing an eth pktMichael LeBeane
Changeset 11701 only serialized the useful portion of of an ethernet packets' payload. However, the device models expect each ethernet packet to contain a 16KB buffer, even if there is no data in it. This patch adds a 'bufLength' field to EthPacketData so the original size of the packet buffer can always be unserialized. Reported-by: Gabor Dozsa <Gabor.Dozsa@arm.com>
2016-10-26dev: Add m5 op to toggle synchronization for dist-gem5.Michael LeBeane
This patch adds the ability for an application to request dist-gem5 to begin/ end synchronization using an m5 op. When toggling on sync, all nodes agree on the next sync point based on the maximum of all nodes' ticks. CPUs are suspended until the sync point to avoid sending network messages until sync has been enabled. Toggling off sync acts like a global execution barrier, where all CPUs are disabled until every node reaches the toggle off point. This avoids tricky situations such as one node hitting a toggle off followed by a toggle on before the other nodes hit the first toggle off.
2016-10-26dev: Add 'simLength' parameter in EthPacketDatamlebeane
Currently, all the network devices create a 16K buffer for the 'data' field in EthPacketData, and use 'length' to keep track of the size of the packet in the buffer. This patch introduces the 'simLength' parameter to EthPacketData, which is used to hold the effective length of the packet used for all timing calulations in the simulator. Serialization is performed using only the useful data in the packet ('length') and not necessarily the entire original buffer.
2016-09-13dev: Exit correctly in dist-gem5Michael LeBeane
The receiver thread in dist_iface is allowed to directly exit the simulation. This can cause exit to be called twice if the main thread simultaneously wants to exit the simulation. Therefore, have the receiver thread enqueue a request to exit on the primary event queue for the main simulation thread to handle.
2016-07-19dev, dist: Fixed a scheduling bug in the etherswitchMohammad Alian
This patch fixes a bug in etherswitch. When a packet gets inserted in the output fifo, the txEvent has to always be reschedule, not only when an event is already scheduled. This can raise the assertion in the reschedule function.
2016-06-08dist, dev: Fixed the packet ordering in etherswitchMohammad Alian
This patch fixes the order that packets gets pushed into the output fifo of etherswitch. If two packets arrive at the same tick to the etherswitch, we sort and push them based on their source port id. In dist-gem5 simulations, if there is no ordering inforced while two packets arrive at the same tick, it can lead to non-deterministic simulations Committed by Jason Lowe-Power <power.jg@gmail.com>
2016-06-06sim: Call regStats of base-class as wellStephan Diestelhorst
We want to extend the stats of objects hierarchically and thus it is necessary to register the statistics of the base-class(es), as well. For now, these are empty, but generic stats will be added there. Patch originally provided by Akash Bagdia at ARM Ltd.
2015-11-27base: Add support for changing output directoriesAndreas Sandberg
This changeset adds support for changing the simulator output directory. This can be useful when the simulation goes through several stages (e.g., a warming phase, a simulation phase, and a verification phase) since it allows the output from each stage to be located in a different directory. Relocation is done by calling core.setOutputDir() from Python or simout.setOutputDirectory() from C++. This change affects several parts of the design of the gem5's output subsystem. First, files returned by an OutputDirectory instance (e.g., simout) are of the type OutputStream instead of a std::ostream. This allows us to do some more book keeping and control re-opening of files when the output directory is changed. Second, new subdirectories are OutputDirectory instances, which should be used to create files in that sub-directory. Signed-off-by: Andreas Sandberg <andreas@sandberg.pp.se> [sascha.bischoff@arm.com: Rebased patches onto a newer gem5 version] Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com> Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
2016-02-15misc: Add missing overrides to appease clangAndreas Hansson
Since the last round of fixes a few new issues have snuck in. We should consider switching the regression runs to clang.
2016-02-06style: eliminate explicit boolean comparisonsSteve Reinhardt
Result of running 'hg m5style --skip-all --fix-control -a' to get rid of '== true' comparisons, plus trivial manual edits to get rid of '== false'/'== False' comparisons. Left a couple of explicit comparisons in where they didn't seem unreasonable: invalid boolean comparison in src/arch/mips/interrupts.cc:155 >> DPRINTF(Interrupt, "Interrupts OnCpuTimerINterrupt(tc) == true\n");<< invalid boolean comparison in src/unittest/unittest.hh:110 >> "EXPECT_FALSE(" #expr ")", (expr) == false)<<
2016-02-06style: remove trailing whitespaceSteve Reinhardt
Result of running 'hg m5style --skip-all --fix-white -a'.
2016-02-06dist, dev: add an ethernet switch modelMohammad Alian
2016-01-17sim: don't ignore SIG_TRAPSteve Reinhardt
By ignoring SIG_TRAP, using --debug-break <N> when not connected to a debugger becomes a no-op. Apparently this was intended to be a feature, though the rationale is not clear. If we don't ignore SIG_TRAP, then using --debug-break <N> when not connected to a debugger causes the simulation process to terminate at tick N. This is occasionally useful, e.g., if you just want to collect a trace for a specific window of execution then you can combine this with --debug-start to do exactly that. In addition to not ignoring the signal, this patch also updates the --debug-break help message and deletes a handful of unprotected calls to Debug::breakpoint() that relied on the prior behavior.
2016-01-11scons: Enable -Wextra by defaultAndreas Hansson
Make best use of the compiler, and enable -Wextra as well as -Wall. There are a few issues that had to be resolved, but they are all trivial.
2016-01-07dev: Distributed Ethernet link for distributed gem5 simulationsGabor Dozsa
Distributed gem5 (abbreviated dist-gem5) is the result of the convergence effort between multi-gem5 and pd-gem5 (from Univ. of Wisconsin). It relies on the base multi-gem5 infrastructure for packet forwarding, synchronisation and checkpointing but combines those with the elaborated network switch model from pd-gem5. --HG-- rename : src/dev/net/multi_etherlink.cc => src/dev/net/dist_etherlink.cc rename : src/dev/net/multi_etherlink.hh => src/dev/net/dist_etherlink.hh rename : src/dev/net/multi_iface.cc => src/dev/net/dist_iface.cc rename : src/dev/net/multi_iface.hh => src/dev/net/dist_iface.hh rename : src/dev/net/multi_packet.hh => src/dev/net/dist_packet.hh
2015-12-10dev: Move network devices to src/dev/net/Andreas Sandberg
--HG-- rename : src/dev/Ethernet.py => src/dev/net/Ethernet.py rename : src/dev/etherbus.cc => src/dev/net/etherbus.cc rename : src/dev/etherbus.hh => src/dev/net/etherbus.hh rename : src/dev/etherdevice.cc => src/dev/net/etherdevice.cc rename : src/dev/etherdevice.hh => src/dev/net/etherdevice.hh rename : src/dev/etherdump.cc => src/dev/net/etherdump.cc rename : src/dev/etherdump.hh => src/dev/net/etherdump.hh rename : src/dev/etherint.cc => src/dev/net/etherint.cc rename : src/dev/etherint.hh => src/dev/net/etherint.hh rename : src/dev/etherlink.cc => src/dev/net/etherlink.cc rename : src/dev/etherlink.hh => src/dev/net/etherlink.hh rename : src/dev/etherobject.hh => src/dev/net/etherobject.hh rename : src/dev/etherpkt.cc => src/dev/net/etherpkt.cc rename : src/dev/etherpkt.hh => src/dev/net/etherpkt.hh rename : src/dev/ethertap.cc => src/dev/net/ethertap.cc rename : src/dev/ethertap.hh => src/dev/net/ethertap.hh rename : src/dev/i8254xGBe.cc => src/dev/net/i8254xGBe.cc rename : src/dev/i8254xGBe.hh => src/dev/net/i8254xGBe.hh rename : src/dev/i8254xGBe_defs.hh => src/dev/net/i8254xGBe_defs.hh rename : src/dev/multi_etherlink.cc => src/dev/net/multi_etherlink.cc rename : src/dev/multi_etherlink.hh => src/dev/net/multi_etherlink.hh rename : src/dev/multi_iface.cc => src/dev/net/multi_iface.cc rename : src/dev/multi_iface.hh => src/dev/net/multi_iface.hh rename : src/dev/multi_packet.cc => src/dev/net/multi_packet.cc rename : src/dev/multi_packet.hh => src/dev/net/multi_packet.hh rename : src/dev/ns_gige.cc => src/dev/net/ns_gige.cc rename : src/dev/ns_gige.hh => src/dev/net/ns_gige.hh rename : src/dev/ns_gige_reg.h => src/dev/net/ns_gige_reg.h rename : src/dev/pktfifo.cc => src/dev/net/pktfifo.cc rename : src/dev/pktfifo.hh => src/dev/net/pktfifo.hh rename : src/dev/sinic.cc => src/dev/net/sinic.cc rename : src/dev/sinic.hh => src/dev/net/sinic.hh rename : src/dev/sinicreg.hh => src/dev/net/sinicreg.hh rename : src/dev/tcp_iface.cc => src/dev/net/tcp_iface.cc rename : src/dev/tcp_iface.hh => src/dev/net/tcp_iface.hh