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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 428FEC49EA5 for ; Mon, 30 May 2022 14:21:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241159AbiE3OVH (ORCPT ); Mon, 30 May 2022 10:21:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240913AbiE3OQg (ORCPT ); Mon, 30 May 2022 10:16:36 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0ADBD106543; Mon, 30 May 2022 06:44:18 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 3FBFB60F47; Mon, 30 May 2022 13:44:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7E098C3411A; Mon, 30 May 2022 13:44:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1653918249; bh=fsc6IIIk1awweZ+LPL499ZV/HHQ210t5VuqTymzmdZw=; h=From:To:Cc:Subject:Date:From; b=CoAnx3Z6+FkEB0I2L3tZgc1H0suyzS5p7ZZZOFwvifmWZl8ZbdZX5dZwfkg+dgFKN 85bKyyTEVTMCzZN41iMLUJ+MLrLuHF/rWeWZVnFfmbh8OoJSw44Twb1F2AJm5oOiXA MOVGH/6jgclhy3nJS/KahzMyNLosiHCmFpgX9rcm3GbyJvHv5vx3eOhfIXHd+7DjU4 89QBhRVSMoGZGeao+lml9+zUfElgwU1i/fOePT3tIkSI+xATlJkl9vo+0FX3Eh07fi T0BAAlsZV7mXmonEUK2XpFej4EZz4RInfwaPjLbtpqQsFmodKRloayULAInE6MvGaM EpAdyL6PbW0nw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tejas Upadhyay , Raviteja Goud Talla , Rodrigo Vivi , Lu Baolu , Sasha Levin , dwmw2@infradead.org, joro@8bytes.org, will@kernel.org, iommu@lists.linux-foundation.org Subject: [PATCH AUTOSEL 5.10 01/76] iommu/vt-d: Add RPLS to quirk list to skip TE disabling Date: Mon, 30 May 2022 09:42:51 -0400 Message-Id: <20220530134406.1934928-1-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tejas Upadhyay [ Upstream commit 0a967f5bfd9134b89681cae58deb222e20840e76 ] The VT-d spec requires (10.4.4 Global Command Register, TE field) that: Hardware implementations supporting DMA draining must drain any in-flight DMA read/write requests queued within the Root-Complex before completing the translation enable command and reflecting the status of the command through the TES field in the Global Status register. Unfortunately, some integrated graphic devices fail to do so after some kind of power state transition. As the result, the system might stuck in iommu_disable_translati on(), waiting for the completion of TE transition. This adds RPLS to a quirk list for those devices and skips TE disabling if the qurik hits. Link: https://gitlab.freedesktop.org/drm/intel/-/issues/4898 Tested-by: Raviteja Goud Talla Cc: Rodrigo Vivi Acked-by: Lu Baolu Signed-off-by: Tejas Upadhyay Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20220302043256.191529-1-tejaskumarx.surendrakumar.upadhyay@intel.com Signed-off-by: Sasha Levin --- drivers/iommu/intel/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 21749859ad45..477dde39823c 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -6296,7 +6296,7 @@ static void quirk_igfx_skip_te_disable(struct pci_dev *dev) ver = (dev->device >> 8) & 0xff; if (ver != 0x45 && ver != 0x46 && ver != 0x4c && ver != 0x4e && ver != 0x8a && ver != 0x98 && - ver != 0x9a) + ver != 0x9a && ver != 0xa7) return; if (risky_device(dev)) -- 2.35.1