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2017-07-25tests: Fix path for module imports in ARM system configsNikos Nikoleris
Change-Id: I6fd660da3899de1f8c61bf012532ff0437467302 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/4220 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
2017-02-14mem: Update DRAM configuration namesWendy Elsasser
Names of DRAM configurations were updated to reflect both the channel and device data width. Previous naming format was: <DEVICE_TYPE>_<DATA_RATE>_<CHANNEL_WIDTH> The following nomenclature is now used: <DEVICE_TYPE>_<DATA_RATE>_<n>x<w> where n = The number of devices per rank on the channel x = Device width Total channel width can be calculated by n*w Example: A 64-bit DDR4, 2400 channel consisting of 4-bit devices: n = 16 w = 4 The resulting configuration name is: DDR4_2400_16x4 Updated scripts to match new naming convention. Added unique configurations for DDR4 for: 1) 16x4 2) 8x8 3) 4x16 Change-Id: Ibd7f763b7248835c624309143cb9fc29d56a69d1 Reviewed-by: Radhika Jagtap <radhika.jagtap@arm.com> Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
2016-10-14config: Make configs/common a Python packageAndreas Hansson
Continue along the same line as the recent patch that made the Ruby-related config scripts Python packages and make also the configs/common directory a package. All affected config scripts are updated (hopefully). Note that this change makes it apparent that the current organisation and naming of the config directory and its subdirectories is rather chaotic. We mix scripts that are directly invoked with scripts that merely contain convenience functions. While it is not addressed in this patch we should follow up with a re-organisation of the config structure, and renaming of some of the packages.
2014-09-03tests: Use O3_ARM_v7a config for full-system ARM regressionsAndreas Hansson
This patch changes the CPU configuration used for the full-system ARM regressions to increase the test coverage. Note that it is only the core configuration, and not the caches etc.
2013-08-19config: Move the memory instantiation outside FSConfigAndreas Hansson
This patch moves the instantiation of the memory controller outside FSConfig and instead relies on the mem_ranges to pass the information to the caller (e.g. fs.py or one of the regression scripts). The main motivation for this change is to expose the structural composition of the memory system and allow more tuning and configuration without adding a large number of options to the makeSystem functions. The patch updates the relevant example scripts to maintain the current functionality. As the order that ports are connected to the memory bus changes (in certain regresisons), some bus stats are shuffled around. For example, what used to be layer 0 is now layer 1. Going forward, options will be added to support the addition of multi-channel memory controllers.
2013-01-07tests: Create base classes to encapsulate common test configurationsAndreas Sandberg
Most of the test cases currently contain a large amount of duplicated boiler plate code. This changeset introduces a set of classes that encapsulates most of the functionality when setting up a test configuration. The following base classes are introduced: * BaseSystem - Basic system configuration that can be used for both SE and FS simulation. * BaseFSSystem - Basic FS configuration uni-processor and multi-processor configurations. * BaseFSSystemUniprocessor - Basic FS configuration for uni-processor configurations. This is provided as a way to make existing test cases backwards compatible. Architecture specific implementations are provided for ARM, Alpha, and X86.
2012-10-26config: Fix the cache class naming in regression scriptsAndreas Hansson
This patch unifies the naming of the default L1 and L2 caches in the regression configs to be in line with what is used in the se and fs scripts.
2012-10-25config: Use shared cache config for regressionsAndreas Hansson
This patch uses the common L1, L2 and IOCache configuration for the regressions that all share the same cache parameters. There are a few regressions that use a slightly different configuration (memtest, o3-timing=mp, simple-atomic-mp and simple-timing-mp), and the latter are not changed in this patch. They will be updated in a future patch. The common cache configurations are changed to match the ones used in the regressions, and are slightly changed with respect to what they were. Hopefully this means we can converge on a common base configuration, used both in the normal user configurations and regressions. As only regressions that shared the same cache configuration are updated, no regressions are affected.
2012-10-15Mem: Use cycles to express cache-related latenciesAndreas Hansson
This patch changes the cache-related latencies from an absolute time expressed in Ticks, to a number of cycles that can be scaled with the clock period of the caches. Ultimately this patch serves to enable future work that involves dynamic frequency scaling. As an immediate benefit it also makes it more convenient to specify cache performance without implicitly assuming a specific CPU core operating frequency. The stat blocked_cycles that actually counter in ticks is now updated to count in cycles. As the timing is now rounded to the clock edges of the cache, there are some regressions that change. Plenty of them have very minor changes, whereas some regressions with a short run-time are perturbed quite significantly. A follow-on patch updates all the statistics for the regressions.
2012-10-15Regression: Use addTwoLevelCacheHierarchy in configsAndreas Hansson
This patch unifies the full-system regression config scripts and uses the BaseCPU convenience method addTwoLevelCacheHierarchy to connect up the L1s and L2, and create the bus inbetween. The patch is a step on the way to use the clock period to express the cache latencies, as the CPU is now the parent of the L1, L2 and L1-L2 bus, and these modules thus use the CPU clock. The patch does not change the value of any stats, but plenty names, and a follow-up patch contains the update to the stats, chaning system.l2c to system.cpu.l2cache.
2012-09-25Cache: add a response latency to the cachesMrinmoy Ghosh
In the current caches the hit latency is paid twice on a miss. This patch lets a configurable response latency be set of the cache for the backward path.
2012-05-31Bus: Split the bus into a non-coherent and coherent busAndreas Hansson
This patch introduces a class hierarchy of buses, a non-coherent one, and a coherent one, splitting the existing bus functionality. By doing so it also enables further specialisation of the two types of buses. A non-coherent bus connects a number of non-snooping masters and slaves, and routes the request and response packets based on the address. The request packets issued by the master connected to a non-coherent bus could still snoop in caches attached to a coherent bus, as is the case with the I/O bus and memory bus in most system configurations. No snoops will, however, reach any master on the non-coherent bus itself. The non-coherent bus can be used as a template for modelling PCI, PCIe, and non-coherent AMBA and OCP buses, and is typically used for the I/O buses. A coherent bus connects a number of (potentially) snooping masters and slaves, and routes the request and response packets based on the address, and also forwards all requests to the snoopers and deals with the snoop responses. The coherent bus can be used as a template for modelling QPI, HyperTransport, ACE and coherent OCP buses, and is typically used for the L1-to-L2 buses and as the main system interconnect. The configuration scripts are updated to use a NoncoherentBus for all peripheral and I/O buses. A bit of minor tidying up has also been done. --HG-- rename : src/mem/bus.cc => src/mem/coherent_bus.cc rename : src/mem/bus.hh => src/mem/coherent_bus.hh rename : src/mem/bus.cc => src/mem/noncoherent_bus.cc rename : src/mem/bus.hh => src/mem/noncoherent_bus.hh
2012-03-09CheckerCPU: Make some basic regression tests for CheckerCPUGeoffrey Blake
Adds regression tests for the CheckerCPU. ARM ISA support only at this point.