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[144.49.247.25]) by smtp-relay.gmail.com with ESMTPS id 71dfb90a1353d-5c7ec232ce8sm5518342e0c.5.2026.09.07.13.21.18 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Sep 2026 13:21:18 -0700 (PDT) X-Relaying-Domain: broadcom.com X-CFilter-Loop: Reflected Received: by mail-qt1-f197.google.com with SMTP id d75a77b69052e-5308a3825deso14254281cf.2 for ; Mon, 07 Sep 2026 13:21:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1788812477; x=1789417277; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=iMNzlSvlaMkiP/A6FBG1e+Aok0NB3tA8jnJAebpaqaw=; b=GO49zmrBh1rPwPmT98bOao46u+UKCwiNpHqdcmYPhCOif6ADT8cVmNbUeZkkRS4lYJ IeUXNQpIXupb/RsH2eqv16XxijoOtQmyVZPM0yiGfGgeYGZthjc18sCI73z4QQWXGmCf HfsSOZvPaBDoIwKJ8+MOzthFTbR/XX1bHFn1c= X-Forwarded-Encrypted: i=1; AKwUvBzFFX2irzJ2nDL/FoqnlmS2fzZ2SchV41xDOxo8wJxIcEAgKXjabBTosXtPOL56f06mems7AC2qqwA=@vger.kernel.org X-Received: by 2002:a05:622a:4a89:b0:52d:8743:bc83 with SMTP id d75a77b69052e-530549f8267mr27752951cf.34.1788812477582; Mon, 07 Sep 2026 13:21:17 -0700 (PDT) X-Received: by 2002:a05:622a:4a89:b0:52d:8743:bc83 with SMTP id d75a77b69052e-530549f8267mr27752461cf.34.1788812477145; Mon, 07 Sep 2026 13:21:17 -0700 (PDT) Received: from lvnvda3289.lvn.broadcom.net ([192.19.161.250]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-530541992e4sm94946891cf.21.2026.09.07.13.21.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Sep 2026 13:21:15 -0700 (PDT) From: Michael Chan To: bhelgaas@google.com, linux-pci@vger.kernel.org Cc: netdev@vger.kernel.org, Shantiprasad Shettar Subject: [PATCH] PCI: Add ACS quirks for Broadcom BCM57412/57416 NICs Date: Mon, 7 Sep 2026 13:20:20 -0700 Message-ID: <20260907202020.2525301-1-michael.chan@broadcom.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e From: Shantiprasad Shettar The older Broadcom BCM57412/57416 NICs may be multi-function devices. While they don't advertise ACS capabilities, peer-to-peer transactions are not possible between the individual functions. So it is ok to treat them as fully isolated. Add ACS quirks for these 2 devices so the functions can be in independent IOMMU groups and attached individually to userspace applications using VFIO. Signed-off-by: Shantiprasad Shettar Signed-off-by: Michael Chan --- drivers/pci/quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index de9bbccda21f..191dbe87a09b 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5182,7 +5182,9 @@ static const struct pci_dev_acs_enabled { { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs }, /* Broadcom multi-function device */ + { PCI_VENDOR_ID_BROADCOM, 0x16D6, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs }, + { PCI_VENDOR_ID_BROADCOM, 0x16D8, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs }, -- 2.51.0