From patchwork Tue May 19 17:55:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 11558421 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BFFEF90 for ; Tue, 19 May 2020 18:08:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 95C14204EA for ; Tue, 19 May 2020 18:08:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="iV8+3wvk"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="T73/hci8" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 95C14204EA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=l+mvs20vuzUkhFK3lILILHKjJpY+bRjgiwZkxgaSLJ0=; b=iV8+3wvk9S/FbQ /6huafiI1khlume3f9k3/IYItvf15lH2k/9dMZkdHMYrpdxGUCWVnUxJod2MNxk6DgrXjCJFDUih2 1Rf9qHhAKAg1J7ClsX0lklH56EAtLwTAB11HnLjk2/l1w6Bh99uF7wXZ0ExRpqSQ1bg73g90kQbC/ Kogo4g947ZUL6mMWR0YO3mYj09F0ZebfPfAPjjoLOXWOuRKmtT6wLOCTQqW3741xauGKwuEAugr1P ZyhBA2yu4AEYtf07vgAH20LVi+nXkKd/v79Jt25EqI096Ybs2XSSRjTQjo/FDD3+4yYrnELbhHaCU 3n94H5mfIHoyilG74gdA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jb6fb-0006YV-27; Tue, 19 May 2020 18:08:51 +0000 Received: from mail-wm1-x344.google.com ([2a00:1450:4864:20::344]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jb6Z6-0006fA-Kk for linux-arm-kernel@lists.infradead.org; Tue, 19 May 2020 18:02:12 +0000 Received: by mail-wm1-x344.google.com with SMTP id u188so221291wmu.1 for ; Tue, 19 May 2020 11:02:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ItT+TOPL7iHYDvWhuBPZ37dZIwufOCW7iBxWcHWr4y4=; b=T73/hci8m0xaQEonuG+UITtUtGVzOJkMhIY/g1SohiFjmbfVK6w59f+mvqGudusgqn KgSK+DNf5H/EQw1G/d66b7N0XokxEarYo8OFVIa3yO4z8ZUf4rBHRzAX2fY5L09vHu1Y QQzBlmR3/6FRKXAEejV9+0bzWiW/ndlxSsX7EpdL73Qs3tIfuU7JiQ1JABcUgfVkg84v /5x6oY+5isr6RrxYXgLgn/rKf2OVXKo+2aaq/oVwR31vmGqGarJEDUl11onJW/3JsSu6 L760pJcDstfBWOr3+KHNzLdSHCFEX02NpH3IIwq+RgLPlc9O62wk3XBFgwtfUBP2m/Pl pXnQ== 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=ItT+TOPL7iHYDvWhuBPZ37dZIwufOCW7iBxWcHWr4y4=; b=nQ39GE5DQpE/DHTrpLw9o9DYIXPymOtkfP8oAOUx7d3CjDjNuUEvKcPlpXpqNpTPOz 6zMQf6z27pGoFexj+5ReIjBSjzLepJ3k8DUpFz1CZB5cCBaD35i8gNDu9l+n89yzo6I3 flm8ykUpc8dBeKXWYMe7joB5vpNmT4S5E1jwaddVaf0NRpsHwscvxqvf0MZbFzoXfy6h KCQVkpxB0cIi6b0uWnETYsTk3GoupnKGBPO9LQzj8OsCwIjoxrYkTIqWK3hqk+YxoYEE CFfTlEvkdMpryzzUB0V/LW8fXIJugzD+4NKf/U6LT9DOQ6A15CPWAKyh7Hg5gKqZ4qtd kX2g== X-Gm-Message-State: AOAM531/Ue/6VDnI9WoreNbM9WfBHcUAoU2IKKhjiAiCzVEevzlJ4EBx WEm5RMgdNBtrPaxauK6SsUqSpA== X-Google-Smtp-Source: ABdhPJyqmxnjyw5ql53tgyxYBbcNmlPhWAlfjLm7SZrRDqOvDmRTlTWmj7mIiYK7YZi2FXhxDTCLEQ== X-Received: by 2002:a7b:cb96:: with SMTP id m22mr582720wmi.164.1589911327419; Tue, 19 May 2020 11:02:07 -0700 (PDT) Received: from localhost.localdomain ([2001:171b:226e:c200:c43b:ef78:d083:b355]) by smtp.gmail.com with ESMTPSA id 1sm510496wmz.13.2020.05.19.11.02.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 May 2020 11:02:07 -0700 (PDT) From: Jean-Philippe Brucker To: iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH v7 22/24] PCI/ATS: Add PRI stubs Date: Tue, 19 May 2020 19:55:00 +0200 Message-Id: <20200519175502.2504091-23-jean-philippe@linaro.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200519175502.2504091-1-jean-philippe@linaro.org> References: <20200519175502.2504091-1-jean-philippe@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200519_110208_756880_CF0841B8 X-CRM114-Status: UNSURE ( 9.74 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:344 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: fenghua.yu@intel.com, kevin.tian@intel.com, jacob.jun.pan@linux.intel.com, jgg@ziepe.ca, catalin.marinas@arm.com, joro@8bytes.org, Kuppuswamy Sathyanarayanan , robin.murphy@arm.com, hch@infradead.org, zhangfei.gao@linaro.org, Jean-Philippe Brucker , Jonathan.Cameron@huawei.com, Bjorn Helgaas , felix.kuehling@amd.com, xuzaibo@huawei.com, will@kernel.org, christian.koenig@amd.com, baolu.lu@linux.intel.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The SMMUv3 driver, which can be built without CONFIG_PCI, will soon gain support for PRI. Partially revert commit c6e9aefbf9db ("PCI/ATS: Remove unused PRI and PASID stubs") to re-introduce the PRI stubs, and avoid adding more #ifdefs to the SMMU driver. Acked-by: Bjorn Helgaas Reviewed-by: Kuppuswamy Sathyanarayanan Signed-off-by: Jean-Philippe Brucker --- include/linux/pci-ats.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h index f75c307f346d..e9e266df9b37 100644 --- a/include/linux/pci-ats.h +++ b/include/linux/pci-ats.h @@ -28,6 +28,14 @@ int pci_enable_pri(struct pci_dev *pdev, u32 reqs); void pci_disable_pri(struct pci_dev *pdev); int pci_reset_pri(struct pci_dev *pdev); int pci_prg_resp_pasid_required(struct pci_dev *pdev); +#else /* CONFIG_PCI_PRI */ +static inline int pci_enable_pri(struct pci_dev *pdev, u32 reqs) +{ return -ENODEV; } +static inline void pci_disable_pri(struct pci_dev *pdev) { } +static inline int pci_reset_pri(struct pci_dev *pdev) +{ return -ENODEV; } +static inline int pci_prg_resp_pasid_required(struct pci_dev *pdev) +{ return 0; } #endif /* CONFIG_PCI_PRI */ #ifdef CONFIG_PCI_PASID