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[84.110.153.254]) by smtp.gmail.com with ESMTPSA id z22-20020a05600c0a1600b003cfd0bd8c0asm11364246wmp.30.2022.12.19.00.35.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Dec 2022 00:35:23 -0800 (PST) From: Alvaro Karsz To: virtualization@lists.linux-foundation.org, linux-pci@vger.kernel.org Subject: [RESEND PATCH 2/3] New PCI quirk for SolidRun SNET DPU. Date: Mon, 19 Dec 2022 10:35:10 +0200 Message-Id: <20221219083511.73205-3-alvaro.karsz@solid-run.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20221219083511.73205-1-alvaro.karsz@solid-run.com> References: <20221219083511.73205-1-alvaro.karsz@solid-run.com> MIME-Version: 1.0 Cc: bhelgaas@google.com X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" The DPU advertises FLR, but it may cause the device to hang. This only happens with revision 0x1. Signed-off-by: Alvaro Karsz --- drivers/pci/quirks.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 285acc4aacc..809d03272c2 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5343,6 +5343,14 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr); +/* FLR may cause the SolidRun SNET DPU (rev 0x1) to hang */ +static void quirk_no_flr_snet(struct pci_dev *dev) +{ + if (dev->revision == 0x1) + quirk_no_flr(dev); +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLIDRUN, 0x1000, quirk_no_flr_snet); + static void quirk_no_ext_tags(struct pci_dev *pdev) { struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus); -- 2.32.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization