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 8FFAEC4332F for ; Thu, 14 Apr 2022 19:20:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345761AbiDNTWl (ORCPT ); Thu, 14 Apr 2022 15:22:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52350 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345202AbiDNTWO (ORCPT ); Thu, 14 Apr 2022 15:22:14 -0400 Received: from mail-lf1-x134.google.com (mail-lf1-x134.google.com [IPv6:2a00:1450:4864:20::134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 018E1AACA8 for ; Thu, 14 Apr 2022 12:19:46 -0700 (PDT) Received: by mail-lf1-x134.google.com with SMTP id bq30so10789309lfb.3 for ; Thu, 14 Apr 2022 12:19:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=lMGcVfKV8sctWGleZvUOf73V/MSGq5S+Npr1qVNtBaA=; b=HouaAb9VHQFNGxR9MIu6VzU91fVp9m4H9MFuGHWemt2O82W51Jf7w0svknXQnp9eoL Goijg/CjOJm12gw7O79o4tOKKi3VWVpFlGcCExQrgrgWjTLybck87oaBE8839ZFvqsgt PHA9UIv4u9ZIJ0KRv79B8BNi7Ma48plv0i8Ikw6DPDjZOba9itZELQd6iL42ER4Do5KC KnGW1lDf5sUT5lSWC5BOctu4TM3VkGzNie7bvNS2Bn7x53eayd0Dgb1qqP6phAjj3tzd uRuUa2wtuEaXrTf/kpJoJpqL9whQiLU0m+UmApeEsmIl/mWjegT0468noSCexcMl91FI NpKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=lMGcVfKV8sctWGleZvUOf73V/MSGq5S+Npr1qVNtBaA=; b=BzOzaN+7mZwwNnoOcqI2foOZ7pOn2VrRonRtqp/KwfIWE183VTB0OS9Zb5IGUeRhFP 6GrGJvcp3iPTlL5lZsU9fcbZrysBtc9HcKVY1+/21//LOKA2uOQjbot6QziaJ7vL1H2a PbP2fU4eFkj/Y4H2A1nrhnyXU5xJ1rY/YTwn3EVnOzP+OBU+fPNS/GI+Kkya2HCjmx3t DP6pb25ez8wnYxxYg7zUGn2B+papjkPQX08IK7xRLQBAYDO4/BJXRAbbEUiE+34ks0a4 x4sCW52r58fkkys7OQACUJcztQ74UP5nWicIiF3NMjgXyYlfx5snEz6wfwMRMmbm1Sol BoHA== X-Gm-Message-State: AOAM531iRHypQfmtdSkFqOHQbwSdGg2y9XxujsJl1hjo0jU6pCBsLM84 qdARtqLGqMGJ75Z2K9cJi5k= X-Google-Smtp-Source: ABdhPJyqpKzQq/8peqyhT0SdO2Fz0WkprUG2NmtNhK+vB9NhUMwVEFgX8mPVozIXpha113okS20X4g== X-Received: by 2002:a05:6512:3f97:b0:44a:f67d:7d8 with SMTP id x23-20020a0565123f9700b0044af67d07d8mr2755017lfa.81.1649963984241; Thu, 14 Apr 2022 12:19:44 -0700 (PDT) Received: from otyshchenko.router ([212.22.223.21]) by smtp.gmail.com with ESMTPSA id l3-20020a194943000000b0046b928d2795sm85001lfj.67.2022.04.14.12.19.43 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 14 Apr 2022 12:19:43 -0700 (PDT) From: Oleksandr Tyshchenko To: xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Oleksandr Tyshchenko , Stefano Stabellini , Russell King , Catalin Marinas , Will Deacon , Boris Ostrovsky , Juergen Gross , Logan Gunthorpe , David Hildenbrand , Martin Oliveira , Kees Cook , Jean-Philippe Brucker , Julien Grall Subject: [RFC PATCH 5/6] arm/xen: Introduce xen_setup_dma_ops() Date: Thu, 14 Apr 2022 22:19:32 +0300 Message-Id: <1649963973-22879-6-git-send-email-olekstysh@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1649963973-22879-1-git-send-email-olekstysh@gmail.com> References: <1649963973-22879-1-git-send-email-olekstysh@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Oleksandr Tyshchenko This patch introduces new helper and places it in new header. The helper's purpose is to assign any Xen specific DMA ops in a single place. For now, we deal with xen-swiotlb DMA ops only. The subsequent patch will add xen-virtio DMA ops case. Also re-use the xen_swiotlb_detect() check on Arm32. Signed-off-by: Oleksandr Tyshchenko --- arch/arm/include/asm/xen/xen-ops.h | 1 + arch/arm/mm/dma-mapping.c | 5 ++--- arch/arm64/include/asm/xen/xen-ops.h | 1 + arch/arm64/mm/dma-mapping.c | 5 ++--- include/xen/arm/xen-ops.h | 13 +++++++++++++ 5 files changed, 19 insertions(+), 6 deletions(-) create mode 100644 arch/arm/include/asm/xen/xen-ops.h create mode 100644 arch/arm64/include/asm/xen/xen-ops.h create mode 100644 include/xen/arm/xen-ops.h diff --git a/arch/arm/include/asm/xen/xen-ops.h b/arch/arm/include/asm/xen/xen-ops.h new file mode 100644 index 00000000..8d2fa24 --- /dev/null +++ b/arch/arm/include/asm/xen/xen-ops.h @@ -0,0 +1 @@ +#include diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 82ffac6..a1bf9dd 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -33,7 +33,7 @@ #include #include #include -#include +#include #include "dma.h" #include "mm.h" @@ -2288,8 +2288,7 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, set_dma_ops(dev, dma_ops); #ifdef CONFIG_XEN - if (xen_initial_domain()) - dev->dma_ops = &xen_swiotlb_dma_ops; + xen_setup_dma_ops(dev); #endif dev->archdata.dma_ops_setup = true; } diff --git a/arch/arm64/include/asm/xen/xen-ops.h b/arch/arm64/include/asm/xen/xen-ops.h new file mode 100644 index 00000000..8d2fa24 --- /dev/null +++ b/arch/arm64/include/asm/xen/xen-ops.h @@ -0,0 +1 @@ +#include diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 6719f9e..831e673 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -9,9 +9,9 @@ #include #include #include -#include #include +#include void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, enum dma_data_direction dir) @@ -53,7 +53,6 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, iommu_setup_dma_ops(dev, dma_base, dma_base + size - 1); #ifdef CONFIG_XEN - if (xen_swiotlb_detect()) - dev->dma_ops = &xen_swiotlb_dma_ops; + xen_setup_dma_ops(dev); #endif } diff --git a/include/xen/arm/xen-ops.h b/include/xen/arm/xen-ops.h new file mode 100644 index 00000000..621da05 --- /dev/null +++ b/include/xen/arm/xen-ops.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_ARM_XEN_OPS_H +#define _ASM_ARM_XEN_OPS_H + +#include + +static inline void xen_setup_dma_ops(struct device *dev) +{ + if (xen_swiotlb_detect()) + dev->dma_ops = &xen_swiotlb_dma_ops; +} + +#endif /* _ASM_ARM_XEN_OPS_H */ -- 2.7.4