Commit Graph

462 Commits

Author SHA1 Message Date
Bobby R. Bruce
0b54ad277f python: Add Components Library [Alpha Release]
The purpose of the gem5 components library is to provide gem5 users a
standard set of common and useful gem5 components pre-built to add to
their experiments. The gem5 components library adopts a modular
architecture design with the goal of components being easy to add and
remove from designs, and extendable as needed. E.g., any Memory system
should be interchangable with any other, and if not a helpful error
messages should be raised.

Examples of using the gem5 components library can be found in
`configs/example/components-library`.

Important Disclaimer:

This is a pre-alpha release of the gem5 components library. The purpose
of this release is to get some community feedback on this new component
of gem5. Though some testing has been done, we expect regular fixes and
improvements until this is in a stable state.

The components library has been formatted with Python Black; typing has
been checked with MyPy; and the library has been tested with the scripts
in `configs/example/components-libary`. More rigorous tests are to be
added in future revisions.

More detailed documentation will appear in future revisions.

Jira Ticket outlining TODOs and known bugs can be found here:
https://gem5.atlassian.net/browse/GEM5-648

Change-Id: I3492ec4a6d8c59ffbae899ce8e87ab4ffb92b976
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47466
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-07-10 21:07:44 +00:00
Kyle Roarty
e2e18d41e1 configs,gpu-compute: Add support for gfx902/Raven
This patch adds support for a gfx902 Vega APU, ripping the
appropriate values for device_id from the ROCm Thunk
(src/topology.c).

Note: gfx902 isn't officially supported by ROCm. This
means that it may not work for all programs. In particular,
rocBLAS is incompatible with gfx902, so anything that uses
rocBLAS won't be able to run with gfx902.

Change-Id: I48893e7cc9c7e52275fdfd22314f371a9db8e90a
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47530
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-07-10 03:42:03 +00:00
Kyle Roarty
29372c8bff configs: Set valid heap_type values
The variables that were used to set heap_type don't exist.
Explicitly set them to the proper values.

Also add pointer to what heap value means in the ROCm stack.

Change-Id: I8df7fca7442f6640be1154ef147c4e302ea491bb
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47528
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-07-09 16:11:20 +00:00
Kyle Roarty
ab9e28ddb8 configs,gpu-compute: Set proper dGPUPoolID defaults
In GPU.py, dGPUPoolID is defined as an int, but was defaulted
to False. Explicitly set it to 0, instead.

In apu_se.py, dGPUPoolID was being set to 1, but that was
resulting in crashes. Setting it to 0 avoids those crashes.

Change-Id: I0f1161588279a335bbd0d8ae7acda97fc23201b5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47527
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-07-09 16:11:20 +00:00
Kyle Roarty
c7a69187dd configs: Don't report CPU cores on Fiji properties
ROCm determines if a device is a dGPU in two ways. The first
is by looking at the device ID. The second is through a flag that
gets set only if the reported cpu_cores_count is 0.

If these don't agree, ROCm breaks when doing memory operations.

Previously, cpu_cores_count was non-zero on the Fiji config.
This patch sets it to 0 to appease ROCm

Change-Id: I0fd0ce724f491ed6a4598188b3799468668585f4
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47525
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
2021-07-09 16:11:20 +00:00
Kyle Roarty
a71801b9a0 configs,gpu-compute: Add render driver needed for ROCm 4
ROCm 4 utilizes the render driver located at /dev/dri/renderDXXX. This
patch implements a very simple driver that just returns a file
descriptor when opened, as testing has shown that's all that's needed

Change-Id: I65602346cbf17b2dc80e114046ebf5c9830a1507
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46244
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
2021-06-30 16:47:43 +00:00
Kyle Roarty
466e2018a2 configs: Add mem_banks to Carrizo topology
ROCm 4 iterates through the mem_banks to find an appropriate place to
allocate memory. Previously, Carrizo didn't have any mem_banks, which
resulted in the ROCm 4 runtime erroring out, as it didn't know where to
allocate memory.

The implementation is fairly similar to the implementation used for the
Fiji or Vega configs

Change-Id: I5bb4e89657d44c6cb690fd224ee1bf1d4d6cf2a5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46240
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Matthew Poremba <matthew.poremba@amd.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
2021-06-30 16:47:43 +00:00
Sandipan Das
bc52e3d6c9 configs: Fix waiting on remote debugger
Commit 2c75e58cac ("sim,cpu: Move the remote GDB stub
into the workload.") moved "wait_for_remote_gdb" to the
Workload class. That breaks se.py since it continues to
rely on that being a property of BaseCPU. This ensures
that the property is now set via the current Workload
instance instead.

Also, owing to its boolean nature, the argument should
ideally not expect any additional values. Hence, it is
associated with the "store_true" action.

Change-Id: I4a00b29d283df36ebf833c9125651cd6deb52a4f
Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/47360
Reviewed-by: Boris Shingarov <shingarov@labware.com>
Maintainer: Boris Shingarov <shingarov@labware.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-06-30 16:30:59 +00:00
Matthew Poremba
e9bac9df87 dev-amdgpu,configs: checkpoint before MMIOs
The flow for Full System amdgpu is the use KVM to boot linux and begin
loading the driver module. However, the amdgpu module requires reading
the VGA ROM located at 0xc0000 in X86. KVM does not support having a
small 128KiB hole at this location, therefore we take a checkpoint and
switch to a timing CPU to continue loading the drivers before the VGA
ROM is read.

This creates a checkpoint just before the first MMIOs. This is indicated
by three interrupts being sent to the PCI device. After three interrupts
in a row are counted a checkpoint exit event occurs. The interrupt
counter is reset if a non-interrupt PCI read is seen.

Change-Id: I23b320abe81ff6e766cb3f604eca2979339938e5
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46161
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-06-11 17:10:32 +00:00
Matthew Poremba
ca12a8997d mem-ruby,sim: Add support for VGA ROM memory region
Checks if the address is in a shadowed region, and sends the request
to pio to be serviced by the device backing up that range.

Based on: https://gem5-review.googlesource.com/c/amd/gem5/+/23484

Change-Id: I4d5b46cccd6203523008b2e9545d55eb62130964
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46159
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-06-11 17:10:32 +00:00
Hoa Nguyen
b04bf8f729 configs: fix se.py error when using "--redirects"
Currently, the workload is initialized before host filesystem
redirections take place (i.e. before --redirects is taken into
account).

This change moves the initialization of the workload to the place
where the redirections have taken place.

JIRA: https://gem5.atlassian.net/browse/GEM5-1001

Change-Id: Id8f4c8486b4e0adb19ccc25d02d0c28cbf671063
Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/46099
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-06-02 19:50:10 +00:00
Peter Yuen
794f9c2a26 arch-riscv: Added flexibility to RISC-V FS config
Made some small changes to add flexibility to linux boot options.
Also briefly explained the usage in comments.

Change-Id: I4f02e7ffeca3e104a4d640db4cc900a208b74a5a
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43625
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-30 03:58:35 +00:00
Matthew Poremba
a9f2e21e08 configs: Initial configuration for full-system GPU
This is an initial configuration capable of booting Linux and
registering a PCI device which registers as an AMD Vega 10 (Frontier
Edition) GPU. It it loosely based on the the example/fs.py and gem5 book
full system example scripts. The top-level file is meant to be modular
such that convenience scripts can be created to set arguments
automatically and then call the main run function.

This will evolve over time as more full-system GPU components are added
and the network topology needed for disjoint address spaces is created
for the VIPER protocol.

Change-Id: I7002213ca8de5eb73919e49fb11840a688744012
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/44907
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-29 17:13:12 +00:00
Kevin Loughlin
306ed368c5 configs: Updates for SMP X86KvmCPU boot
The prior example config for FS fails SMP boot on the KVMX86CPU.
These updates incorporate logic x86-boot-tests/system/
[system.py|run_exit.py] as well as configs/example/arm/
fs_bigLITTLE.py to enable both single processor and SMP boot.
Each KVM VM now uses its own eventq and a non-zero sim_quantum.

Change-Id: I9c73a2f6f2ca604aecd31f45570423c58f85020f
Signed-off-by: Kevin Loughlin <kevlough@umich.edu>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/41602
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-28 22:32:00 +00:00
Matthew Poremba
fd9addede1 configs: apu_se.py hotfix
Missed two optparse -> argparse changes. Square runs.

Change-Id: I3a652380e4c4202a376413602fa3698a28ff9206
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/44825
Maintainer: Matthew Poremba <matthew.poremba@amd.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-24 21:43:20 +00:00
Kyle Roarty
eb09361eef configs, gpu-compute: Add option to specify gfx version
Currently uses gfx801, gfx803, gfx900 for Carrizo, Fiji,
and Vega respectively

Change-Id: I62758914b6a60f16dd4f2141a23c0a9141a4e1a0
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/42217
Maintainer: Matthew Poremba <matthew.poremba@amd.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-24 15:54:15 +00:00
Michael LeBeane
ad43083bb3 gpu-compute: Implement per-request MTYPEs
GPU MTYPE is currently set using a global config passed to the
PACoalescer.  This patch enables MTYPE to be set by the shader on a
per-request bases.  In real hardware, the MTYPE is extracted from a
GPUVM PTE during address translation.  However, our current simulator
only models x86 page tables which do not have the appropriate bits for
GPU MTYPES.  Rather than hacking non-x86 bits into our x86 page table
models, this patch instead keeps an interval tree of all pages that
request custom MTYPES in the driver itself.  This is currently
only used to map host pages to the GPU as uncacheable, but is easily
extensible to other MTYPES.

Change-Id: I7daab0ffae42084b9131a67c85cd0aa4bbbfc8d6
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/42216
Maintainer: Matthew Poremba <matthew.poremba@amd.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-24 15:54:15 +00:00
Matthew Poremba
4f7d15a70b configs: Update apu_se.py argparse support
There was a merge error caused by new options being added to this script
while all scripts were being converted from optparse. This fixes the
error.

This also removes the mostly unused setOption / getOption as you can
directly assign a value to an argument after parsing

Change-Id: Ic8aaa0728a43936cd4c6e1ed590e01ba5f0fbf5b
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/44785
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-23 20:52:03 +00:00
Giacomo Travaglini
a2c9213a31 configs, tests: Replace optparse with argparse
JIRA: https://gem5.atlassian.net/browse/GEM5-543

Change-Id: I997d6a4e45319a74e21bd0d61d4af6118474c849
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/44513
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-21 20:42:37 +00:00
Hoa Nguyen
503b60ed56 configs: Fix stats name in arm/fs_power.py
In the config, there are stats having name changed:
- overall_misses -> overallMisses
- sim_seconds -> simSeconds
- overall_accesses -> overallAccesses

JIRA: https://gem5.atlassian.net/browse/GEM5-957

Signed-off-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Change-Id: I35faa72b12320e6b41833f601eb23604358b3d42
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/44626
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-21 09:36:07 +00:00
Michael LeBeane
a5f55e0be1 gpu-compute: Topology and driver changes for dGPU
New topology ripped from Fiji to support dGPU.  A dGPU flag is added to
the config which is propogated to the driver.  The emulated driver is
now able to properly deal with dGPU ioctls and mmaps.  For now, dGPU
physical memory is allocated from the host, but this is easy to change
once we get a GPU memory controller up and running.

Change-Id: I594418482b12ec8fb2e4018d8d0371d56f4f51c8
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/42214
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-15 16:41:11 +00:00
Giacomo Travaglini
e30378e2d2 configs: Add --kvm-userspace-gic to fs_bigLITTLE.py
This will allow a user to select gem5 simulation of the GIC via
command line; Necessary option when the simulated GIC != than the
host GIC

Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Change-Id: I30e151b774ddfa7f4e91054a375254e15007af3f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/44006
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-07 08:21:28 +00:00
Giacomo Travaglini
5e24869079 configs: Do not assume single mem range in RealView
The SimpleSystem was assuming a single memory range for RealView
platforms by selecting the first element of the list only:

mem_range = self.realview._mem_regions[0]

This patch is fixing this by evaluating the entire list of platform
ranges.

Change-Id: I453fff7857966076c1419b95ddb9177e51d9f8d5
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39636
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-04-06 08:48:50 +00:00
Gabe Black
5f95d7a89a dev,cpu,configs: Get rid of the IntrControl device.
This vestigial device provides a thin layer of indirection between
devices and the CPUs in a system. It's basically a collection of helper
functions, but since it's a SimObject it needs to be instantiated in
python and added to configurations.

Change-Id: I029d2314ae0bb890678e1e68dafcdab4bfe49beb
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43347
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-03-29 20:54:16 +00:00
Bobby R. Bruce
502ad193ae misc: Merge branch v21.0.0.0 into develop
This incorporates the last of the v21.0 staging branch changes into the
develop branch.

Change-Id: I89349ac5c52fd454eb87d6199ea5ccde0d50dda3
2021-03-25 14:42:27 -07:00
Giacomo Travaglini
47a278c0ad configs: RubySimpleSystem and simple ruby_fs.py script
This patch is providing a minimal ruby powered script
for Arm simulations

Change-Id: Ifb2d827362e2d5de5d15c70b200598f9f714f7f8
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43288
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
2021-03-25 09:37:13 +00:00
Giacomo Travaglini
918a01f42e configs, tests: Ruby.create_system cpus option
This patch is adding an extra parameter to the Ruby.create_system
function. The idea is to remove any assumption about cpu configuration
in the ruby scripts.

At the moment the scripts are assuming a flat list of cpu assigned
to the system object. Unfortunately this is not standardized, as
some systems might empoloy a different layout of cpus, like grouping
them in cluster objects.

With this patch we are allowing client scripts to provide the cpu list
as an extra argument

This has the extra benefit of removing the indexing hack

if len(system.cpu) == 1:

which was present in most scripts

Change-Id: Ibc06b920273cde4f7c394d61c0ca664a7143cd27
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43287
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
2021-03-25 09:37:13 +00:00
Giacomo Travaglini
51c17ac398 configs: Add a BaseSimpleSystem
This is a preparing patch, disentangling common platform
configurations from the memory setup (which is classic
oriented)

Change-Id: I395bfcfb15e666efdbf2f010bea7973f1658b6a3
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43286
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
2021-03-25 09:37:13 +00:00
Peter Yuen
39108150ab arch-riscv: Added DTB Generation Functionality to RISC-V FS
Changes:
1. RiscvBareMetal
The RiscvBareMetal class and API are preserved for backwards
compatibility, but the base class RiscvFSWorkload is removed
as it inherits from the Workload class. However, most needed
functionalities are already implemented in the KernelWorkload
class

2. RiscvLinux
The RiscvLinux class is added. A dtb filename can be specified
to be loaded to the corresponding memory address.

3. HiFive, Clint, Plic, Uart8250, VirtIOMMIO
Devicetree node generation function is added.

4. tlb, faults
Unnecessary includes of arch/riscv/fs_workload are removed.

Change-Id: Ia239b5614bd93d8e794330ead266f6121a4d13cb
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/42053
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ayaz Akram <yazakram@ucdavis.edu>
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
2021-03-24 02:47:30 +00:00
Giacomo Travaglini
0296e308ac configs: Remove simpleSystem factory function
The function had been introduced in the past when we needed to
instantiate either an ArmSystem or a LinuxArmSystem depending on the
workload. Now that the workload object has been introduced in gem5, we
always instantiate an ArmSystem in FS mode, hence we don't need a
function to generate the System object

Change-Id: I79ccf31087b84521cce32da71bc835ff202dc432
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43285
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-03-19 21:24:20 +00:00
Tiago Mück
21dfaa49ca configs: changed CHI --noc-config format
Changed format from yaml to plain python. The new py configuration
file, when provided, must specialize the CHI node types defined in
configs/ruby/CHI_config.py (moved from configs/ruby/CHI.py). This
is required in order to setup the node->router bindings when the
CustomMesh topology is used.

See configs/example/noc_config/2x4.py (replaces
configs/example/noc_config/2x4.yaml) for an example.

--noc-config was also renamed to --chi-config, since the CHI node types
can be fully specialized in the configuration file.

Change-Id: Ic0c5407dba3d2483d5c30634c115b5410a5228fd
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/43123
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-03-18 19:02:21 +00:00
Bobby R. Bruce
68064d8043 misc: Merge branch 'release-staging-v21-0' into develop
Change-Id: I0ad043ded56fb848e045057a1e7a56ea39797906
2021-03-18 11:13:14 -07:00
Tiago Mück
b13b485095 configs,mem-ruby: CHI-based Ruby protocol
This patch add a new Ruby cache coherence protocol based on Arm' AMBA5
CHI specification. The CHI protocol defines and implements two state
machine types:

- Cache_Controller: generic cache controller that can be configured as:
    - Top-level L1 I/D cache
    - A intermediate level (L2, L3, ...) private or shared cache
    - A CHI home node (i.e. the point of coherence of the system and
        has the global directory)
    - A DMA requester

- Memory_Controller: implements a CHI slave node and interfaces with
    gem5 memory controller. This controller has the functionality of a
    Directory_Controller on the other Ruby protocols, except it doesn't
    have a directory.

The Cache_Controller has multiple cache allocation/deallocation
parameters to control the clusivity with respect to upstream caches.
Allocation can be completely disabled to use Cache_Controller as a
DMA requester or as a home node without a shared LLC.

The standard configuration file configs/ruby/CHI.py provides a
'create_system' compatible with configs/example/fs.py and
configs/example/se.py and creates a system with private L1/L2 caches
per core and a shared LLC at the home nodes. Different cache topologies
can be defined by modifying 'create_system' or by creating custom
scripts using the structures defined in configs/ruby/CHI.py.

This patch also includes the 'CustomMesh' topology script to be used
with CHI. CustomMesh generates a 2D mesh topology with the placement
of components manually defined in a separate configuration file using
the --noc-config parameter.
The example in configs/example/noc_config/2x4.yaml creates a simple 2x4
mesh. For example, to run a SE mode simulation, with 4 cores,
4 mem ctnrls, and 4 home nodes (L3 caches):

build/ARM/gem5.opt configs/example/se.py \
--cmd 'tests/test-progs/hello/bin/arm/linux/hello' \
--ruby --num-cpus=4 --num-dirs=4 --num-l3caches=4 \
--topology=CustomMesh --noc-config=configs/example/noc_config/2x4.yaml

If one doesn't care about the component placement on the interconnect,
the 'Crossbar' and 'Pt2Pt' may be used and they do not require the
--noc-config option.

Additional authors:
    Joshua Randall <joshua.randall@arm.com>
    Pedro Benedicte <pedro.benedicteillescas@arm.com>
    Tuan Ta <tuan.ta2@arm.com>

JIRA: https://gem5.atlassian.net/browse/GEM5-908

Change-Id: I856524b0afd30842194190f5bd69e7e6ded906b0
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/42563
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-03-16 15:28:44 +00:00
Giacomo Travaglini
f20d5070b1 configs: Unnecessary iteration on baremetal.py and starter_fs.py
The code is actually wrong and at the moment it works simply because
those scripts are instantiating a single cluster only

Change-Id: Ie756320707f6fdb2039567afd53b966a9386715b
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/42863
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-03-16 10:26:13 +00:00
Peter Yuen
b5962abb3d arch-riscv: FS Linux config file for RISC-V
This file is added to provide a clean starter for RISC-V FS Linux
configuration.

Change-Id: Ifd401761be86758340f26edd00a5ab1ca51e6938
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/41033
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Ayaz Akram <yazakram@ucdavis.edu>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
2021-02-23 03:43:47 +00:00
Matthew Poremba
391322ff9b cpu,configs: Add DMA thread to Ruby GPU tester
Add a DMA thread tester to the Ruby GPU tester to test the DMA state
machine in the protocol. Currently creates a dummy DMA device to pass
through Ruby.py and scans for the DMA sequencers due to opaqueness of
Ruby.py.

DMA atomics not yet supported as there is no protocol that implements
atomic transitions in the DMA state machine file.

Example run command:
build/GCN3_X86/gem5.opt configs/example/ruby_gpu_random_test.py \
    --test-length=1000

Change-Id: I63d83e00fd0dcbb1e34c6704d1c2d49ed4e77722
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39936
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-02-16 16:48:57 +00:00
Sooraj Puthoor
965ad12b9a dev-hsa: enable interruptible hsa signal support
Event creation and management support from emulated drivers is required
to support interruptible signals in HSA and this support was not
available. This changeset adds the event creation and management support
in the emulated driver.  With this patch, each interruptible signal
created by the HSA runtime is associated with a signal event. The HSA
runtime can then put a thread waiting on a signal condition to sleep
asking the driver to monitor the event associated with that signal. If
the signal is modified by the GPU, the dispatcher notifies the driver
about signal value change.  If the modifier is a CPU thread, the thread
will have to make HSA API calls to modify the signal and these API calls
will notify the driver about signal value change. Once the driver is
notified about a change in the signal value, the driver checks to see if
any thread is sleeping on that signal and wake up the sleeping thread
associated with that event. The driver has also implemented the time_out
wakeup that can wake up the thread after a certain time period has
expired. This is also true for barrier packets.

Each signal has an event address in a kernel managed and allocated
event page that can be used as a mailbox pointer to notify an event.
However, this feature used by non-CPU agents to communicate with the
driver is not implemented by this changeset because the non-CPU HSA
agents in our model can directly communicate with driver in our
implementation. Having said that, adding that feature should be trivial
because the event address and event pages are correctly setup by this
changeset and just adding the event page's virtual address to our PIO
doorbell interface in the page tables and registering that pio address
to the driver should be sufficient. Managing mailbox pointer for an
event is based on event ID and using this event ID as an index into
event page, this changeset already provides a unique mailbox pointer for
each event.

Change-Id: Ic62794076ddd47526b1f952fdb4c1bad632bdd2e
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/38335
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-01-31 03:25:05 +00:00
Giacomo Travaglini
85c1fdac29 configs: Use MmioVirtIO for disk image in baremetal.py
The baremetal platform is the platform we use for running
user supplied binaries on baremetal hardware.
(simply put, it runs provided binaries without adding
a gem5 bootloader)

Some layers of this software stack might not have a pci driver.
This might be the case for firmware images like edkII
which needs to use a block device to extract the bootloader
and/or the kernel image. Those can use the memory mapped
(in host domain) virtio block device which is already
part of the VExpress_GEM5 platforms

Change-Id: I9c6ba7e1b4566a3999fd9ba20a2bebe191dc3ef8
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39995
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-01-29 22:41:24 +00:00
Andreas Sandberg
40c581be44 configs: Remove Python 2.7 glue code
Remove uses of six and from __future__ imports as they are no longer
needed.

Change-Id: I6e2f270557d7343bbad30c8e6d743e363c43715a
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39755
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-01-26 17:34:08 +00:00
Andreas Sandberg
4d1a6fffd9 configs: Weed out old port terminology in Arm examples
Stop using the deprecated port names in Arm example scripts.

Change-Id: I11fea3e0df945ac64075b647766570604b70cad8
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39582
Reviewed-by: Gabe Black <gabe.black@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-01-22 11:05:01 +00:00
Andreas Sandberg
206038912c configs: Remove Python 2 compatibility code in Arm configs
Remove uses of six and imports from __future__ and use native Python 3
functionality instead.

Change-Id: If37718ba99def2d6f176604e20d4ebeda75474ad
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39581
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Richard Cooper <richard.cooper@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-01-22 11:05:01 +00:00
gauravjain14
c29523665e gpu-compute: Support for dynamic register alloc
SimplePoolManager doesn't allow mapping of two WGs
simultaneously on the same Compute Unit (provided
the previous WG has been mapped to all the SIMDs)
even if there is sufficient VRF and SRF space
available.

DynPoolManager takes care of that by dynamically
allocating and deallocating register file space
to wavefronts

Change-Id: I2255c68d4b421615d7b231edc05d3ebb27cbd66c
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32034
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Reviewed-by: Alexandru Duțu <alexandru.dutu@amd.com>
2021-01-14 17:04:27 +00:00
Ciro Santilli
6ecf110b06 arch-arm: inform bootloader of kernel position with a register
Before the commit, the bootloader had a hardcoded entry point that it
would jump to.

However, the Linux kernel arm64 v5.8 forced us to change the kernel
entry point because the required memory alignment has changed at:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/
commit/?h=v5.8&id=cfa7ede20f133cc81cef01dc3a516dda3a9721ee

Therefore the only way to have a single bootloader that boots both
pre-v5.8 and post-v5.8 kernels is to pass that information from gem5
to the bootloader, which we do in this patch via registers.

This approach was already used by the 32-bit bootloader, which passed
that value via r3, and we try to use the same register x3 in 64-bit.

Since we are now passing this information, the this patch also removes
the hardcoding of DTB and cpu-release-addr, and also passes those
values via registers.

We store the cpu-release-addr in x5 as that value appears to have a
function similar to flags_addr, which is used only in 32-bit arm and
gets stored in r5.

This commit renames atags_addr to dtb_addr, since both are mutually
exclusive, and serve a similar purpose, DTB being the newer recommended
approach.

Similarly, flags_addr is renamed to cpu_release_addr, and it is moved
from ArmSystem into ArmFsWorkload, since it is not an intrinsic system
property, and should be together with dtb_addr instead.

Before this commit, flags_addr was being set from FSConfig.py and
configs/example/arm/devices.py to self.realview.realview_io.pio_addr
+ 0x30. This commit moves that logic into RealView.py instead, and
sets the flags address 8 bytes before the start of the DTB address.

JIRA: https://gem5.atlassian.net/browse/GEM5-787
Change-Id: If70bea9690be04b84e6040e256a9b03e46710e10
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/35076
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-01-13 11:32:19 +00:00
Giacomo Travaglini
3c0769bd25 configs: Remove default bootscript option for fs_bigLITTLE.py
Since the beginning fs_bigLITTLE has been pointing to a default

default_rcs = 'bootscript.rcS'

as a System.readfile parameter. That script is not present in
the gem5 repo and all the other fs scripts (starter_fs.py, fs.py
through Options.py) are using an emptry string as default
readfile param value.

We are hence aligning to the other scripts by removing this
default value

Change-Id: I20dc7714deae890d61706459c8d13bd8f5aac7a0
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/38815
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-01-07 09:37:40 +00:00
Tiago Mück
ca29eef37e configs,tests: use Sequencer port connect methods
This patch updates Ruby configuration scripts to use the functions
defined in the RubySequencer python object to connect to cpu ports.

Only the protocol-agnostic scripts were updated. Scripts that assume
a specific protocol (e.g. configs/example/apu_se.py, gpu tests, etc)
and scripts in which the obj connected to the RubySequencer is not a
BaseCPU (e.g. the tests scripts) were not changed as they require a
non-standard port wireup.

Change-Id: I1e931ff0fc93f393cb36fbb8769ea4b48e1a1e86
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/31418
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-12-07 19:52:22 +00:00
Brad Beckmann
80221d7e1d configs,mem-ruby: Remove old GPU ptls
These protocols are no longer supported, either
because they are not representative of GPU
protocols, or because the have not been updated
to work with GCN3.

Change-Id: I989eeb6826c69225766aaab209302fe638b22719
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34197
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-11-04 21:09:26 +00:00
Matthew Poremba
f36817c367 tests,configs,mem-ruby: Adding Ruby tester for GPU_VIPER
This patch adds the GPU protocol tester that uses data-race-free
operation to discover bugs in GPU protocols including GPU_VIPER. For
more information please see the following paper and the README:

T. Ta, X. Zhang, A. Gutierrez and B. M. Beckmann, "Autonomous
Data-Race-Free GPU Testing," 2019 IEEE International Symposium on
Workload Characterization (IISWC), Orlando, FL, USA, 2019, pp. 81-92,
doi: 10.1109/IISWC47752.2019.9042019.

Change-Id: Ic9939d131a930d1e7014ed0290601140bdd1499f
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/32855
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-11-04 21:09:26 +00:00
Yu-hsin Wang
3d20460c22 configs: Add dtb-gen to fs_bigLITTLE.py
Change-Id: I1956e98d0fa507cc342e926b61d69fb967a64556
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/36955
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-11-04 01:02:22 +00:00
Yu-hsin Wang
c70b4e28c4 configs: Fix FastmodelCluster cpu initialization
We should create the thread and the interrupt controller of fastmodel by
calling the create function explicitly.

Change-Id: I269440e144e83fa0a31d8cdf285fed31642f4f73
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/36380
Reviewed-by: Earl Ou <shunhsingou@google.com>
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Gabe Black <gabeblack@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-10-22 00:49:06 +00:00
Giacomo Travaglini
330a5f7bad misc: BaseCPU using ArchMMU instead of ArchDTB/ArchITB
With this commit we replace every TLB pointer stored in the
cpu model with a BaseMMU pointer.

JIRA: https://gem5.atlassian.net/browse/GEM5-790

Change-Id: I4932a32f68582b25cd252b5420b54d6a40ee15b8
Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/34976
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-10-21 09:33:39 +00:00