{"id":13649135,"url":"https://github.com/pulp-platform/axi_riscv_atomics","last_synced_at":"2026-02-07T23:36:04.892Z","repository":{"id":34216624,"uuid":"171329571","full_name":"pulp-platform/axi_riscv_atomics","owner":"pulp-platform","description":"AXI Adapter(s) for RISC-V Atomic Operations","archived":false,"fork":false,"pushed_at":"2025-08-11T17:06:16.000Z","size":366,"stargazers_count":66,"open_issues_count":3,"forks_count":20,"subscribers_count":8,"default_branch":"master","last_synced_at":"2025-08-11T18:34:58.478Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"SystemVerilog","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/pulp-platform.png","metadata":{"files":{"readme":"README.md","changelog":"CHANGELOG.md","contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2019-02-18T17:49:13.000Z","updated_at":"2025-07-31T08:48:29.000Z","dependencies_parsed_at":"2022-07-24T18:02:27.579Z","dependency_job_id":"cccc663b-6306-46fe-ac36-813beb25d8d9","html_url":"https://github.com/pulp-platform/axi_riscv_atomics","commit_stats":null,"previous_names":[],"tags_count":13,"template":false,"template_full_name":null,"purl":"pkg:github/pulp-platform/axi_riscv_atomics","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pulp-platform%2Faxi_riscv_atomics","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pulp-platform%2Faxi_riscv_atomics/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pulp-platform%2Faxi_riscv_atomics/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pulp-platform%2Faxi_riscv_atomics/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/pulp-platform","download_url":"https://codeload.github.com/pulp-platform/axi_riscv_atomics/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/pulp-platform%2Faxi_riscv_atomics/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29212754,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-02-07T23:14:30.912Z","status":"ssl_error","status_checked_at":"2026-02-07T23:14:17.253Z","response_time":63,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-08-02T01:04:47.940Z","updated_at":"2026-02-07T23:36:04.870Z","avatar_url":"https://github.com/pulp-platform.png","language":"SystemVerilog","funding_links":[],"categories":["SystemVerilog"],"sub_categories":[],"readme":"# AXI Adapter(s) for RISC-V Atomic Operations\n\n**Disclaimer**: This repository is under active development and not yet stabilized.  Use only if you\nknow what you are doing and are prepared to adapt to wide-reaching changes as the project evolves.\nLimited support is available for the latest v0.x version, but only for the latest, and we give no\nbackwards compatibility guarantees for versions before v1.0.\n\nThe modules in this repository implement atomic operations (AMOs) for RISC-V processors (\"A\"\nextension version 2.0) on the AXI protocol.  The modules adheres to the RISC-V Weak Memory Ordering\n(RVWMO) memory consistency model (version 0.1).\n\n## Usage\n\nPlace one of the following modules in your memory hierarchy between an AXI master and slave, where\nthe slave owns a particular memory location (e.g., exclusive access to a memory controller or\nadherence to a cache coherency protocol).  Choose depending on your needs:\n\n- `axi_riscv_lrsc` tracks memory reservations for LR/SC, forwards only successful SCs, and responds\n  accordingly.  This is sufficient to support LR/SC if the processor encodes them as AXI exclusive\n  memory accesses.  Downstream modules do not have to support AXI exclusive memory accesses.\n\n- `axi_riscv_atomics` implements all RISC-V AMOs in addition to LR/SC.  The processor needs to\n  encode RISC-V AMOs as AXI atomic transactions (`AtomicSwap` for `AMOSWAP`, `AtomicLoad` with the\n  corresponding opcode for all other AMOs).   This is sufficient to support the entire RISC-V \"A\"\n  extension.  Downstream modules do not have to support AXI atomic transactions or exclusive\n  memory accesses.\n\nFor each of those modules we additionally provide a wrapper (`_wrap` filename suffix) that exposes\nSystemVerilog interfaces instead of `logic` ports.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpulp-platform%2Faxi_riscv_atomics","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fpulp-platform%2Faxi_riscv_atomics","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fpulp-platform%2Faxi_riscv_atomics/lists"}