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SDMA traps are used in the driver as a DMA fence. To pass a fence, the SDMA sends the driver the interrupt context from a trap packet and the ring ID which specifies which queue in the SDMA engine is passing a fence. Currently the interrupt context is using the wrong value in the packet and the ring ID is hard-coded to always be the gfx queue. This changeset uses the correct interrupt context from the SDMA packet and sets the ring ID to either 0 if the gfx queue is currently being processed or 3 if the page queue is being processed. The relevant interrupt service routine in the driver can be found at: https://github.com/RadeonOpenCompute/ROCK-Kernel-Driver/blob/roc-4.3.x/ drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c#L2129 Change-Id: Ie4a4a9d6ab1d3bf83bf76bb57a02a91100217b51 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/65093 Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com> Maintainer: Matt Sinclair <mattdsinclair@gmail.com> Tested-by: kokoro <noreply+kokoro@google.com>
This is the gem5 simulator. The main website can be found at http://www.gem5.org A good starting point is http://www.gem5.org/about, and for more information about building the simulator and getting started please see http://www.gem5.org/documentation and http://www.gem5.org/documentation/learning_gem5/introduction. To build gem5, you will need the following software: g++ or clang, Python (gem5 links in the Python interpreter), SCons, zlib, m4, and lastly protobuf if you want trace capture and playback support. Please see http://www.gem5.org/documentation/general_docs/building for more details concerning the minimum versions of these tools. Once you have all dependencies resolved, type 'scons build/<CONFIG>/gem5.opt' where CONFIG is one of the options in build_opts like ARM, NULL, MIPS, POWER, SPARC, X86, Garnet_standalone, etc. This will build an optimized version of the gem5 binary (gem5.opt) with the the specified configuration. See http://www.gem5.org/documentation/general_docs/building for more details and options. The main source tree includes these subdirectories: - build_opts: pre-made default configurations for gem5 - build_tools: tools used internally by gem5's build process. - configs: example simulation configuration scripts - ext: less-common external packages needed to build gem5 - include: include files for use in other programs - site_scons: modular components of the build system - src: source code of the gem5 simulator - system: source for some optional system software for simulated systems - tests: regression tests - util: useful utility programs and files To run full-system simulations, you may need compiled system firmware, kernel binaries and one or more disk images, depending on gem5's configuration and what type of workload you're trying to run. Many of those resources can be downloaded from http://resources.gem5.org, and/or from the git repository here: https://gem5.googlesource.com/public/gem5-resources/ If you have questions, please send mail to gem5-users@gem5.org Enjoy using gem5 and please share your modifications and extensions.