From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3503FC433B4 for ; Wed, 19 May 2021 23:56:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 14CD561007 for ; Wed, 19 May 2021 23:56:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229808AbhESX5f (ORCPT ); Wed, 19 May 2021 19:57:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57722 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230088AbhESX5e (ORCPT ); Wed, 19 May 2021 19:57:34 -0400 Received: from mail-pg1-x534.google.com (mail-pg1-x534.google.com [IPv6:2607:f8b0:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FE41C061574; Wed, 19 May 2021 16:56:12 -0700 (PDT) Received: by mail-pg1-x534.google.com with SMTP id q15so10569909pgg.12; Wed, 19 May 2021 16:56:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=JNMQiBUZJXJ3UxQ2xkL0KPsN3/Hv3HAfTP43B6QlmJU=; b=DqHxukMa5VU3tYERMgbbJuvKGXE07lSus/5TqPuBWlszSptPZs13grMg70c47berPu 7Fl0s/OMldkxDA0bRdymTTAA+npmKYYIGCRfSfPAjvfKtKW2Sl2hii41oep87ZU/Up/S ZQKqcjwxDFOYXda+UprCLyyfv7IVT95/IBDIDRxc0174nF7MAvUc/oYfNaXeW3QGeknN ACYTO3wqBhympTZ8ygIHDpzk6kFfAeaGhh6cpaVdAXp0OmGiKHx1oIRdXr+NXrqifJJ/ x4EQ9VT1z4+hXehnx82w4zxqi1a7Bzj4ztjbENar+5ObIBJWrl3h7Ofiq/xPaWgzmCWI U+Pw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=JNMQiBUZJXJ3UxQ2xkL0KPsN3/Hv3HAfTP43B6QlmJU=; b=sAOAjgvupJtBkGLoa+bF2iOIaXQzrIuuN7zBZAxove07VA2aqZDsoUPN/uwb2FyKvA HLXpihRXctbbMKF6JqA6MGE8I/heXa8vw7IsqAhlXIcCpxIJdmt6OKzucgdEU2uoYsWP i0FoYo4irPOIbAmHhuEr+Uwu4vte9KmAtrviu1f+pQ5OtYx5ARbuFr3ljW2BDiQ+Q9ms wWuhpcmTJHL7nn/YIQS+CRIJrm4KuBdOik6poiUzttToNkBB6MO8nGJxrw4CM6ZFJV8t paMnaFMwHvBaujVlxw67kbcxO5duslaucpye0JaVRsKQtuVCSMv9TBWrDriv3AOr4lHW tYYA== X-Gm-Message-State: AOAM531/9RDKqY8ZnRMiZUyl9+Gi6U7pv89b1vRfdOF/xm2jcyFqobo0 QyDyn5ec4u0m7d35R9yt4Gw= X-Google-Smtp-Source: ABdhPJwN0cRMlSFzgP6WkzbRtqX6a6E7f8eUcAFNhAfjm5HJfya2n6REMjACn4roKy9Ne+kBxShXng== X-Received: by 2002:a63:36c1:: with SMTP id d184mr1672616pga.47.1621468572051; Wed, 19 May 2021 16:56:12 -0700 (PDT) Received: from localhost.localdomain ([94.140.8.39]) by smtp.googlemail.com with ESMTPSA id z12sm397670pfk.45.2021.05.19.16.56.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 May 2021 16:56:11 -0700 (PDT) From: Amey Narkhede To: Bjorn Helgaas Cc: alex.williamson@redhat.com, raphael.norwitz@nutanix.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, kw@linux.com, sdonthineni@nvidia.com Subject: [PATCH RESEND v2 7/7] PCI: Enable NO_BUS_RESET quirk for Nvidia GPUs Date: Thu, 20 May 2021 05:24:26 +0530 Message-Id: <20210519235426.99728-8-ameynarkhede03@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210519235426.99728-1-ameynarkhede03@gmail.com> References: <20210519235426.99728-1-ameynarkhede03@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Shanker Donthineni On select platforms, some Nvidia GPU devices do not work with SBR. Triggering SBR would leave the device inoperable for the current system boot. It requires a system hard-reboot to get the GPU device back to normal operating condition post-SBR. For the affected devices, enable NO_BUS_RESET quirk to fix the issue. This issue will be fixed in the next generation of hardware. Signed-off-by: Shanker Donthineni --- drivers/pci/quirks.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 8f47d139c..ceec67342 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3558,6 +3558,18 @@ static void quirk_no_bus_reset(struct pci_dev *dev) dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET; } +/* + * Some Nvidia GPU devices do not work with bus reset, SBR needs to be + * prevented for those affected devices. + */ +static void quirk_nvidia_no_bus_reset(struct pci_dev *dev) +{ + if ((dev->device & 0xffc0) == 0x2340) + quirk_no_bus_reset(dev); +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, + quirk_nvidia_no_bus_reset); + /* * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset. * The device will throw a Link Down error on AER-capable systems and -- 2.31.1