From patchwork Mon Nov 23 13:44:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Will Deacon X-Patchwork-Id: 1404794 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=default header.b=Cmr9EANz; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CfpKy54H1zB3tR for ; Tue, 24 Nov 2020 00:44:38 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730077AbgKWNoR (ORCPT ); Mon, 23 Nov 2020 08:44:17 -0500 Received: from mail.kernel.org ([198.145.29.99]:35528 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729939AbgKWNoR (ORCPT ); Mon, 23 Nov 2020 08:44:17 -0500 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 813D7206F1; Mon, 23 Nov 2020 13:44:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606139056; bh=DB3QEZuy+Fe1QR9eYhfJo9ZD6woPmMFGSzD2JXS+9+Q=; h=From:To:Cc:Subject:Date:From; b=Cmr9EANzmv4bIP3wlI7Dhllj0uIjXveZ90qem2GkU4WVQzSmKOzQa17Jtu/YyEH21 6rY+XVs4S0KSTvniAUG26veNWwMmaTW6qg/+TwvFiVqkb1o2hn2yDfVJWQINFzb3AW Oeqsv8YlMpF+tsbFbkDG9c2VnTzlXdI7XCvO/z6U= From: Will Deacon To: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org, iommu@lists.linux-foundation.org, Will Deacon , Bjorn Helgaas , Alex Deucher , Edgar Merger , Joerg Roedel Subject: [PATCH] PCI: Mark AMD Raven iGPU ATS as broken Date: Mon, 23 Nov 2020 13:44:10 +0000 Message-Id: <20201123134410.10648-1-will@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Edgar Merger reports that the AMD Raven GPU does not work reliably on his system when the IOMMU is enabled: | [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx timeout, signaled seq=1, emitted seq=3 | [...] | amdgpu 0000:0b:00.0: GPU reset begin! | AMD-Vi: Completion-Wait loop timed out | iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=0b:00.0 address=0x38edc0970] This is indicative of a hardware/platform configuration issue so, since disabling ATS has been shown to resolve the problem, add a quirk to match this particular device while Edgar follows-up with AMD for more information. Cc: Bjorn Helgaas Cc: Alex Deucher Reported-by: Edgar Merger Suggested-by: Joerg Roedel Link: https://lore.kernel.org/linux-iommu/MWHPR10MB1310F042A30661D4158520B589FC0@MWHPR10MB1310.namprd10.prod.outlook.com Signed-off-by: Will Deacon --- Hi all, Since Joerg is away at the moment, I'm posting this to try to make some progress with the thread in the Link: tag. Cheers, Will drivers/pci/quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index f70692ac79c5..3911b0ec57ba 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -5176,6 +5176,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats); /* AMD Navi14 dGPU */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats); +/* AMD Raven platform iGPU */ +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats); #endif /* CONFIG_PCI_ATS */ /* Freescale PCIe doesn't support MSI in RC mode */