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2016-08-12mem: Add a FromCache packet attributeAndreas Hansson
This patch adds a FromCache attribute to the packet, and updates a number of the existing request commands to reflect that the request originates from a cache. The attribute simplifies checking if a requests came from a cache or not, and this is used by both the cache and snoop filter in follow-on patches. Change-Id: Ib0a7a080bbe4d6036ddd84b46fd45bc7eb41cd8f Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com> Reviewed-by: Steve Reinhardt <stever@gmail.com>
2016-08-10arm, config: Exit with fatal error if using RubyAndreas Sandberg
Ruby on ARM is currently very experimental. Fail with a fatal error that explains this to make sure users are aware of the limitations (it doesn't actually work yet!). Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
2016-08-10arm, config: Add initial support for RubyAndreas Sandberg
Add initial support for creating an ARM system with a Ruby-based memory system. This support is currently experimental and limited to the new VExpress_GEM5_V1 platform. Change-Id: I36baeb68b0d891e34ea46aafe17b5e55217b4bfa Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Brad Beckmann <brad.beckmann@amd.com>
2016-08-10arm, dev: Add support for listing DMA ports in new platformsAndreas Sandberg
When using a Ruby memory system, the Ruby configuration scripts expect to get a list of DMA ports to create the necessary DMA sequencers. Add support in the utility functions that wire up devices to append DMA ports to a list instead of connecting them to the IO bus. These functions are currently only used by the VExpress_GEM5_V1 platform. Change-Id: I46059e46b0f69e7be5f267e396811bd3caa3ed63 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com> Reviewed-by: Brad Beckmann <brad.beckmann@amd.com>
2016-08-10ruby: Implement support for functional accesses to PIO rangesAndreas Sandberg
There are cases where we want to put boot ROMs on the PIO bus. Ruby currently doesn't support functional accesses to such memories since functional accesses are always assumed to go to physical memory. Add the required support for routing functional accesses to the PIO bus. Change-Id: Ia5b0fcbe87b9642bfd6ff98a55f71909d1a804e3 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Brad Beckmann <brad.beckmann@amd.com> Reviewed-by: Michael LeBeane <michael.lebeane@amd.com>
2016-08-10arm: Don't report the boot ROM as a memory in config tablesAndreas Sandberg
The boot ROM shouldn't be used as a memory by the kernel. Memories have a flag to indicate this which is set for some platforms. Update all platforms to consistently set this flag to indicate that the boot ROM shouldn't be reported as normal memory. Change-Id: I2bf0273e99d2a668e4e8d59f535c1910c745aa7b Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com> Reviewed-by: Brad Beckmann <brad.beckmann@amd.com> --HG-- extra : amend_source : c2cbda38636ea37cbe9ae6977a06b923eab5ba56
2016-08-05sim: fix issues with pwrite(); don't enable fstatfsTony Gutierrez
this patch fixes issues with changeset 11593 use the host's pwrite() syscall for pwrite64Func(), as opposed to pwrite64(), because pwrite64() does not work well on all distros. undo the enabling of fstatfs, as we will add this in a separate pate.
2016-08-04x86, sim: add some syscalls to X86Tony Gutierrez
this patch adds an implementation for the pwrite64 syscall and enables it for x86_64, and enables fstatfs for x86_64.
2016-08-03style: Make the style fixers safeJason Lowe-Power
Adds a wrapper to the fix functions of the verifiers. This wrapper first copies the original file to a backup file, then performs the fix. If an error occurs, the backup file is used to restore the original file. Also fixed a line-length error in verifiers.py
2016-08-02arm: s/ctx_id/ctx/ the GICCurtis Dunham
Factored out of the larger banked register change. Change-Id: I947dbdb9c00b4678bea9d4f77b913b7014208690 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
2016-08-02arm: bank GIC registers per CPUCurtis Dunham
Updated according to GICv2 documentation. Change-Id: I5d926d1abf665eecc43ff0f7d6e561e1ee1c390a Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
2016-08-02stats: update referencesCurtis Dunham
2016-08-02arm: refactor page table walkingCurtis Dunham
Introduce and use a lookup table. Using fetchDescriptor() rather than DMA cleanly handles nested paging. Change-Id: I69ec762f176bd752ba1040890e731826b58d15a6
2016-08-02arm: warn not fail on use of missing miscreg CNTHCTL_EL2Dylan Johnson
During host bootup, KVM reads/writes to CNTHCTL_EL2. Because this miscreg has not been implemented, the simulation would end there. This patch causes the simulation to warn about the read/write instead of fail. Change-Id: If034bfd0818a9a5e50c5fe86609e945258c96fa3
2016-08-02arm: Check TLB stage 2 permissions in AArch64Dylan Johnson
This fixes a bug where stage 2 lookups used the AArch32 permissions rules even if we were executing in AArch64 mode. Change-Id: Ia40758f0599667ca7ca15268bd3bf051342c24c1
2016-08-02arm: correctly assign faulting IPA's to HPFAR_EL2Dylan Johnson
This patch corrects IPA reporting if the translation faults in a stage 2 lookup. Change-Id: I0b914527f8a9f98a5e980a131cf9d03e5584b4e9
2016-08-02arm: Add TLBI instruction for stage 2 IPA'sDylan Johnson
This patch adds support for stage 2 TLBI instructions such as TLBI IPAS2E1_Xt. Change-Id: I0cd5e8055b0c1003e03439aa5183252f50ea0a88
2016-08-02arm: Fix stage 2 memory attribute checking in AArch64Dylan Johnson
Change-Id: I14c93a5460550051a12129e792a9a9bd522a145c
2016-08-02arm: Fix trapping to Hypervisor during MSR/MRS read/writeDylan Johnson
This patch restricts trapping to hypervisor only if we are in the correct exception level for the trap to happen. Change-Id: I0a382b6a572ef835ea36d2702b8a81b633bd3df0
2016-08-02arm: Fix secure state checking in various placesDylan Johnson
Faults that could potentially be routed to the hypervisor checked whether or not they were in a secure state without checking if security was enabled or not. This caused faults not to be routed correctly. This patch causes secure state checking to first ask if security is enabled. Change-Id: I179e9b181b27f552734c9bab2b18d05ac579a119
2016-08-02arm: Fix stage 2 determination in table walkerDylan Johnson
We recompute if we are doing a stage 2 walk inside of the table walker but we have already figured it out in the tlb. Pass the information in to the walk instead of recomputing it. Change-Id: I39637ce99309b2ddbc30344d45ac9ebf6a203401
2016-08-02arm: Refactor aarch64 table walk logic to remove redundancyDylan Johnson
The functional case is already handled within the fetchDescriptor() function. We can thus use that function for both atomic and functional mode when we start the table walk. Change-Id: Iacaed28cd9024d259fd37a58150efd00ff94d86e
2016-08-02arm: Add check to fault routing for hypervisor/virtualizationDylan Johnson
This patch adds the option for faults to be routed to the hypervisor using the pre-existing routeToHyp() functions that are present in each fault type. Change-Id: I9735512c094457636b9870456a5be5432288e004
2016-08-02arm: Fix EL perceived at TLB for address translation instructionsDylan Johnson
During address translation instructions (such as AT S1E1R_Xt) the exception level can be different than the current exception level. This patch fixes how the TLB determines what EL to use during these instructions. Change-Id: Ia9ce229404de9e284bc1f7479fd2c580efd55f8f
2016-08-02arm: Add AArch64 hypervisor call instruction 'hvc'Dylan Johnson
This patch adds the AArch64 instruction hvc which raises an exception from EL1 into EL2. The host OS uses this instruction to world switch into the guest. Change-Id: I930ee43f4f0abd4b35a68eb2a72e44e3ea6570be
2016-08-02arm: add stage2 translation supportDylan Johnson
Change-Id: I8f7c09c7ec3a97149ebebf4b21471b244e6cecc1
2016-08-02arm: enable EL2 supportCurtis Dunham
Change-Id: I59fa4fae98c33d9e5c2185382e1411911d27d341
2016-08-02arm: invalidate TLB miscreg cache on modification of HSCTLRDylan Johnson
Change-Id: I5212c91c56435fe008950ed99feacc6921609226
2016-08-02arm: change instruction classes to catch hyp trapsDylan Johnson
Change-Id: I122918d0e3dfd01ae1a4ca4f19240a069115c8b7
2016-07-22tests: Add regex-based ignore rules for ref filesAndreas Sandberg
There are cases where we need to ignore files with specific extensions (e.g., when Mercurial litters the file system with patch rejects). Implement this functionality using a helper class (FileIgnoreList) that supports both regular expressions and basic string comparisons. Change-Id: I34549754bd2e10ed230ffb2dc057403349f8fa78 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
2016-07-21stats: update referencesCurtis Dunham
2016-07-21arm, config: Add an example ARM big.LITTLE(tm) configuration scriptGabor Dozsa
An ARM big.LITTLE system consists of two cpu clusters: the big CPUs are typically complex out-of-order cores and the little CPUs are simpler in-order ones. The fs_bigLITTLE.py script can run a full system simulation with various number of big and little cores and cache hierarchy. The commit also includes two example device tree files for booting Linux on the bigLITTLE system. Change-Id: I6396fb3b2d8f27049ccae49d8666d643b66c088b Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
2016-07-21cpu: Fix Minor SMT WFI/drain interaction issuesMitch Hayenga
The behavior of WFI is to cause minor to cease evaluating pipeline logic until an interrupt is observed, however a user may wish to drain the system while a core is sleeping due to a WFI. This patch makes WFI drain. If an actual drain occurs during a WFI, the CPU is already drained and will immediately be ready for swapping, checkpointing, etc. This should not negatively impact performance as WFI instructions are 'stream-changing' (treated like unpredicted branches), so all remaining instructions are wrong-path and will be squashed rapidly. Change-Id: I63833d5acb53d8dde78f9f0c9611de0ece385e45
2016-07-21cpu: Add SMT support to MinorCPUMitch Hayenga
This patch adds SMT support to the MinorCPU. Currently RoundRobin or Random thread scheduling are supported. Change-Id: I91faf39ff881af5918cca05051829fc6261f20e3
2016-07-21isa: Modify get/check interrupt routinesMitch Hayenga
Make it so that getInterrupt *always* returns an interrupt if checkInterrupts() returns true. This fixes/simplifies handling of interrupts on the SMT FS CPUs (currently minor).
2016-07-21base: Add total() to Vector2D statDavid Guillen Fandos
This patch adds a total() function to the Vector2D stat type. Similar to other stats such as Scalar or Vector it is useful to be able to read the total for a given stat.
2016-07-21mem: Add snoop traffic statisticDavid Guillen Fandos
2016-07-19config: Allow SPARC FS image to be specified on the command lineJakub Jermar
At the moment the SPARC FS machine configuration comes with a hardcoded value for using the Solaris 10 disk image from the OpenSPARC tarball. The --disk-image option is completely ignored for SPARC. This simple patch modifies the behavior so that --disk-image option is both taken into account and also required. This makes it possible to easily change SPARC FS images without having to modify the configuration files.
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.
2016-07-11base: Fix inverted check in ELF .text size warningAndreas Sandberg
2016-07-11arm: Don't consult the TLB test iface for functional translationsAndreas Sandberg
Don't consult the TLB test interface for PA's returned by functional translations by the AT instruction. We implement this by chaning the ISA code to synthesize 0-length functional reads for the TLB lookup. The TLB then bypasses the final PA check in the tester if the size is zero. Change-Id: I2487b7f829cea88c37e229e9fc7a4543aced961b Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
2016-07-11base: Convert ELF .text size check assertion to a warningAndreas Sandberg
The ELF loader currently has an assertion that checks if the size of a loaded .text secion is non-zero. This is useful in the general case as an empty text section normally indicates that there is something strange with the ELF file. However, asserting isn't very useful. This changeset converts the assert into a warning that tells the user that something strange is happening. Change-Id: I313e17847b50a0eca00f6bd00a54c610d626c0f0 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
2016-07-11mem: Remove stale argument from a DPRINTF in the cache codeNikos Nikoleris
Change-Id: I70dd11c23b45dfc606ef08233d2e50fcc0817505 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
2016-07-01misc: merge with sytle checker fixJason Lowe-Power
Oops.
2016-07-01ruby: Fix double statistic registration in garnetMatthew Poremba
Currently garnet will not run due to double statistic registration of new stats in ClockedObject. This occurs because a temporary array named 'cls' is being added as a child to garnet internal and external link SimObjects. This patch simply renames the temporary array which prevents it from being added as a child object and avoids the assertion that a statistic was already registered. Committed by Jason Lowe-Power <jason@lowepower.com>
2016-07-01ext: Update DRAMPowerMatthias Jung
Sync DRAMPower to external tool This patch syncs the DRAMPower library of gem5 to the external one on github (https://github.com/ravenrd/DRAMPower) of which I am a maintainer. The version used is the commit: 902a00a1797c48a9df97ec88868f20e847680ae6 from 07. May. 2016. Committed by Jason Lowe-Power <jason@lowepower.com>
2016-07-01misc: SystemC Elastic Trace Player Example.Matthias Jung
This patch adds an example configuration for elastic trace playing into the SystemC world, similar to the already existing traffic generator example in /util/tlm. Committed by Jason Lowe-Power <jason@lowepower.com>
2016-07-01misc: fix a compile error due to incompability with SystemC 2.3.1Christian Menard
This patch fixes an ambigous call compile error Committed by Jason Lowe-Power <jason@lowepower.com>
2016-07-01mem: tester for new HMC configurationAbdul Mutaal Ahmad
This patch provides the example test script to configure different HMC architecture and run traffic through traffic generator. Committed by Jason Lowe-Power <jason@lowepower.com>
2016-07-01mem: different HMC configurationAbdul Mutaal Ahmad
In this new hmc configuration we have used the existing components in gem5 mainly [SerialLink] [NoncoherentXbar]& [DRAMCtrl] to define 3 different architecture for HMC. Highlights 1- It explores 3 different HMC architectures 2- It creates 4-HMC crossbars and attaches 16 vault controllers with it. This will connect vaults to serial links 3- From the previous version, HMCController with round robin funtionality is being removed and all the serial links are being accessible directly from user ports 4- Latency incorporated by HMCController (in previous version) is being added to SerialLink Committed by Jason Lowe-Power <jason@lowepower.com>
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