From patchwork Mon Apr 12 08:40:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 420139 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 ED881C433ED for ; Mon, 12 Apr 2021 08:45:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BEB5C60241 for ; Mon, 12 Apr 2021 08:45:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237636AbhDLIqB (ORCPT ); Mon, 12 Apr 2021 04:46:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:37682 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237721AbhDLIpQ (ORCPT ); Mon, 12 Apr 2021 04:45:16 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3DBBD611F0; Mon, 12 Apr 2021 08:44:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1618217098; bh=e1abmRRKQrNRlJ15b7+d8+mBQEDWGtuiizmhp4eKoIY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MPyHG45phKN5snUWYPfstCQ4//6Fn0IuqSU6n2YSJUHRXBssDQbVo5UuUN+EHxy/P I7UN+RLYHxWMqZX/asqNWLLJyvKlX+FMF9+bhE8RJkuMP5wbkElDWYA6HMy06Lg7Xy BH5eMy0n8B4rZix4IDkmxqwMx/LtS0UTb6kMIYcs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Shyam Sundar S K , Tom Lendacky , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 35/66] amd-xgbe: Update DMA coherency values Date: Mon, 12 Apr 2021 10:40:41 +0200 Message-Id: <20210412083959.257091759@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210412083958.129944265@linuxfoundation.org> References: <20210412083958.129944265@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Shyam Sundar S K [ Upstream commit d75135082698140a26a56defe1bbc1b06f26a41f ] Based on the IOMMU configuration, the current cache control settings can result in possible coherency issues. The hardware team has recommended new settings for the PCI device path to eliminate the issue. Fixes: 6f595959c095 ("amd-xgbe: Adjust register settings to improve performance") Signed-off-by: Shyam Sundar S K Acked-by: Tom Lendacky Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/amd/xgbe/xgbe.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index 47bcbcf58048..0c93a552b921 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -181,9 +181,9 @@ #define XGBE_DMA_SYS_AWCR 0x30303030 /* DMA cache settings - PCI device */ -#define XGBE_DMA_PCI_ARCR 0x00000003 -#define XGBE_DMA_PCI_AWCR 0x13131313 -#define XGBE_DMA_PCI_AWARCR 0x00000313 +#define XGBE_DMA_PCI_ARCR 0x000f0f0f +#define XGBE_DMA_PCI_AWCR 0x0f0f0f0f +#define XGBE_DMA_PCI_AWARCR 0x00000f0f /* DMA channel interrupt modes */ #define XGBE_IRQ_MODE_EDGE 0