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{ "id": 2221128, "url": "http://patchwork.ozlabs.org/api/1.1/covers/2221128/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260408085941.3837334-1-zhangjian.3032@bytedance.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/1.1/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20260408085941.3837334-1-zhangjian.3032@bytedance.com>", "date": "2026-04-08T08:59:39", "name": "[v1,0/2] hw: introduce a lightweight MCTP-over-I2C responder", "submitter": { "id": 83966, "url": "http://patchwork.ozlabs.org/api/1.1/people/83966/?format=api", "name": "Jian Zhang", "email": "zhangjian.3032@bytedance.com" }, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/cover/20260408085941.3837334-1-zhangjian.3032@bytedance.com/mbox/", "series": [ { "id": 499193, "url": "http://patchwork.ozlabs.org/api/1.1/series/499193/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499193", "date": "2026-04-08T08:59:40", "name": "hw: introduce a lightweight MCTP-over-I2C responder", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/499193/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2221128/comments/", "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=bytedance.com header.i=@bytedance.com\n header.a=rsa-sha256 header.s=2212171451 header.b=gMGKB+v0;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Wed, 08 Apr 2026 05:00:19 -0400" ], "DKIM-Signature": "v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n s=2212171451; d=bytedance.com; t=1775638799; h=from:subject:\n mime-version:from:date:message-id:subject:to:cc:reply-to:content-type:\n mime-version:in-reply-to:message-id;\n bh=g+AMW+AIqcrmYYHnTNq7KzVlFfTEGsoPYwILFkuet58=;\n b=gMGKB+v01Vw6KhsFVjgeDhRZ5F+hfB4Uh48SapBq6Ba0VuSWY5NE733Zs0+Sc8jHulkjnC\n 4JUQ6CEcWKvzTpIp6HA20290Ng2Rt/5w/Uy95x8l3CTMskdnUFRJGb23zAzL2BR/8WU8Tg\n rN4Lp45Su6ikx2s0OJhR0cBBQKiqOLIWyqB2fPJPOQq7IX0IeGUZN6VCaVZaU5QhMQxd3U\n OPQ3VWkoaY1Efk+chfdhISn7ikBUGudohT8GwotCmYQj1zultH+BeM8A2K00u0yMC/1NQV\n RCJ3CPrskerg3mTo0tevJi8/IKZeEOGB3qq188yT0+h5p8huWi8ZKGYPa/re4g==", "Date": "Wed, 8 Apr 2026 16:59:39 +0800", "Content-Type": "text/plain; charset=UTF-8", "To": "=?utf-8?q?C=C3=A9dric_Le_Goater?= <clg@kaod.org>,\n \"Peter Maydell\" <peter.maydell@linaro.org>,\n \"Steven Lee\" <steven_lee@aspeedtech.com>, \"Troy Lee\" <leetroy@gmail.com>,\n \"Jamin Lin\" <jamin_lin@aspeedtech.com>,\n \"Andrew Jeffery\" <andrew@codeconstruct.com.au>,\n \"Joel Stanley\" <joel@jms.id.au>, \"Paolo Bonzini\" <pbonzini@redhat.com>,\n <qemu-devel@nongnu.org>, <qemu-arm@nongnu.org>,\n \"Jeremy Kerr\" <jk@codeconstruct.com.au>,\n \"Matt Johnston\" <matt@codeconstruct.com.au>", "X-Mailer": "git-send-email 2.20.1", "X-Lms-Return-Path": "\n <lba+269d6190d+50a160+nongnu.org+zhangjian.3032@bytedance.com>", "From": "\"Jian Zhang\" <zhangjian.3032@bytedance.com>", "Subject": "[PATCH v1 0/2] hw: introduce a lightweight MCTP-over-I2C responder", "Message-Id": "<20260408085941.3837334-1-zhangjian.3032@bytedance.com>", "Mime-Version": "1.0", "X-Original-From": "Jian Zhang <zhangjian.3032@bytedance.com>", "Content-Transfer-Encoding": "7bit", "Received-SPF": "pass client-ip=209.127.231.114;\n envelope-from=zhangjian.3032@bytedance.com; helo=va-2-114.ptr.blmpb.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Hi,\n\nMCTP (Management Component Transport Protocol) is a DMTF-defined\nmanagement transport protocol commonly used between BMCs and managed\ncomponents.\n\nThis series adds a lightweight MCTP implementation to QEMU. To keep the\nscope small and make the first step easier to review, the current series\nfocuses only on the SMBus/I2C transport layer.\n\nPatch 1 introduces a minimal MCTP-over-I2C responder core together with\na simple NCSI-related extension built on top of it. Patch 2 wires the\ndevice into the ASPEED AST2600 EVB machine for initial testing.\n\nThe goal of this series is not to implement a full MCTP stack, but to\nprovide a small and practical foundation for simple emulation use cases.\n\nThis is my first submission to the QEMU upstream community, so any\ncomments, suggestions, or corrections would be valuable.\n\nmctp spec[0]: https://www.dmtf.org/sites/default/files/standards/documents/DSP0236_1.3.1.pdf\nmctp i2c binding[1]: https://www.dmtf.org/sites/default/files/standards/documents/DSP0237_1.2.0.pdf\nncsi spec[2]: https://www.dmtf.org/sites/default/files/standards/documents/DSP0222_1.2.0.pdf\n\nJian Zhang (2):\n hw/misc: introduce mctp I2C responder and NCSI support\n hw/arm/aspeed: add mctp responder device for test\n\n MAINTAINERS | 2 +\n hw/arm/aspeed_ast2600_evb.c | 14 +\n hw/misc/Kconfig | 5 +\n hw/misc/mctp-i2c-responder-ncsi.c | 777 +++++++++++++++++++++++++++\n hw/misc/mctp-i2c-responder.c | 694 ++++++++++++++++++++++++\n hw/misc/meson.build | 5 +\n include/hw/misc/mctp-i2c-responder.h | 116 ++++\n 7 files changed, 1613 insertions(+)\n create mode 100644 hw/misc/mctp-i2c-responder-ncsi.c\n create mode 100644 hw/misc/mctp-i2c-responder.c\n create mode 100644 include/hw/misc/mctp-i2c-responder.h" }