From patchwork Tue May 18 06:42:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claire Chang X-Patchwork-Id: 12263751 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 BEF80C43600 for ; Tue, 18 May 2021 06:43:17 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8D33D611BD for ; Tue, 18 May 2021 06:43:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8D33D611BD Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8B26589D81; Tue, 18 May 2021 06:43:16 +0000 (UTC) Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by gabe.freedesktop.org (Postfix) with ESMTPS id E5ABC89385 for ; Tue, 18 May 2021 06:43:14 +0000 (UTC) Received: by mail-pl1-x633.google.com with SMTP id z4so2335517plg.8 for ; Mon, 17 May 2021 23:43:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=um8C1f1vzKtWMFhzfAaBUmj42oNwrbNCekMrLvRdk1U=; b=Nz40zJd0pKEYV/k8IK4lTQTRDZOUiOUwbA1Arvy6QUQBlPK9z/7NLsKlNL3/1e+jPn Rvsno7nzSv10lOGgseQXJjtNssSPkX7wvn5b3le+v615CbL79fsk9Hc2gr53iJRIIsL9 joN4AoOubYBk2J2DPKHOuv42MtUoFxjdy1UIc= 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=um8C1f1vzKtWMFhzfAaBUmj42oNwrbNCekMrLvRdk1U=; b=i+g2eH1jyhOUaPPIK5peRY8mwYhYkTdJKR8ljW1WbMdYiI3IB1wQOj1eePbPYqJmFC G0vki7y1mStPqLtv+G3mshTbho/M2L+m7sEOtF2Ez9UTZXMUUpIdnh/eJC3QkucCjomu FAvbKwqVQv1NSxj/1PcMjH5bMaZVTnsfaRgeDMxmp1Qyl/ivF4XJFZPv0Cbtn1BdVcIU FFqQ4Rt1n/mtuVmYjVHgXpCpZzsulJnYprKl8AG9/M3uyH9VGVfZkmDZv7/EJBwvu5RI XuDqG5cTe0SfIq9t1SfvrZj2Kaln4Z3w6WDxp+Ttjp0JsAz+TlGRdYNvCW8A+fjo4RFF I7Tg== X-Gm-Message-State: AOAM5330ny/1FLrCsvmFOiIgF1qK9eHox/5Hx2HNVUVq6PMHdJstJJST BgO3b3+62CO7b5OvwAX+PEyELg== X-Google-Smtp-Source: ABdhPJzOUb2or4i3Atyb+wUWqF92M1zBsVH9PXp2RXUL88l16TO6O0yu3WeWl6JLm0exg/RwsGT9VA== X-Received: by 2002:a17:90a:f987:: with SMTP id cq7mr1872645pjb.30.1621320194605; Mon, 17 May 2021 23:43:14 -0700 (PDT) Received: from localhost ([2401:fa00:95:205:f284:b819:54ca:c198]) by smtp.gmail.com with UTF8SMTPSA id k10sm4407807pfu.175.2021.05.17.23.43.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 May 2021 23:43:14 -0700 (PDT) From: Claire Chang To: Rob Herring , mpe@ellerman.id.au, Joerg Roedel , Will Deacon , Frank Rowand , Konrad Rzeszutek Wilk , boris.ostrovsky@oracle.com, jgross@suse.com, Christoph Hellwig , Marek Szyprowski Subject: [PATCH v7 05/15] swiotlb: Add a new get_io_tlb_mem getter Date: Tue, 18 May 2021 14:42:05 +0800 Message-Id: <20210518064215.2856977-6-tientzu@chromium.org> X-Mailer: git-send-email 2.31.1.751.gd2f1c929bd-goog In-Reply-To: <20210518064215.2856977-1-tientzu@chromium.org> References: <20210518064215.2856977-1-tientzu@chromium.org> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: heikki.krogerus@linux.intel.com, thomas.hellstrom@linux.intel.com, peterz@infradead.org, dri-devel@lists.freedesktop.org, chris@chris-wilson.co.uk, grant.likely@arm.com, paulus@samba.org, mingo@kernel.org, jxgao@google.com, sstabellini@kernel.org, Saravana Kannan , xypron.glpk@gmx.de, "Rafael J . Wysocki" , Bartosz Golaszewski , bskeggs@redhat.com, linux-pci@vger.kernel.org, xen-devel@lists.xenproject.org, Thierry Reding , intel-gfx@lists.freedesktop.org, matthew.auld@intel.com, linux-devicetree , airlied@linux.ie, Robin Murphy , Nicolas Boichat , rodrigo.vivi@intel.com, bhelgaas@google.com, tientzu@chromium.org, Dan Williams , Andy Shevchenko , Greg KH , Randy Dunlap , lkml , tfiga@chromium.org, "list@263.net:IOMMU DRIVERS" , Jim Quinlan , linuxppc-dev@lists.ozlabs.org, bauerman@linux.ibm.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add a new getter, get_io_tlb_mem, to help select the io_tlb_mem struct. The restricted DMA pool is preferred if available. Signed-off-by: Claire Chang Reviewed-by: Florian Fainelli --- include/linux/swiotlb.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 03ad6e3b4056..b469f04cca26 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -2,6 +2,7 @@ #ifndef __LINUX_SWIOTLB_H #define __LINUX_SWIOTLB_H +#include #include #include #include @@ -102,6 +103,16 @@ struct io_tlb_mem { }; extern struct io_tlb_mem *io_tlb_default_mem; +static inline struct io_tlb_mem *get_io_tlb_mem(struct device *dev) +{ +#ifdef CONFIG_DMA_RESTRICTED_POOL + if (dev && dev->dma_io_tlb_mem) + return dev->dma_io_tlb_mem; +#endif /* CONFIG_DMA_RESTRICTED_POOL */ + + return io_tlb_default_mem; +} + static inline bool is_swiotlb_buffer(phys_addr_t paddr) { struct io_tlb_mem *mem = io_tlb_default_mem;