From patchwork Mon Feb 24 18:23:59 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: 11401343 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 9131E92A for ; Mon, 24 Feb 2020 18:25:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 5EC3D21744 for ; Mon, 24 Feb 2020 18:25:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="OnFOZtrZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5EC3D21744 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B4EA86B00A2; Mon, 24 Feb 2020 13:24:58 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id AAEBD6B00A4; Mon, 24 Feb 2020 13:24:58 -0500 (EST) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 954566B00A5; Mon, 24 Feb 2020 13:24:58 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0028.hostedemail.com [216.40.44.28]) by kanga.kvack.org (Postfix) with ESMTP id 7293F6B00A2 for ; Mon, 24 Feb 2020 13:24:58 -0500 (EST) Received: from smtpin13.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 1B290181AC9CC for ; Mon, 24 Feb 2020 18:24:58 +0000 (UTC) X-FDA: 76525847076.13.color59_657a906b2e243 X-Spam-Summary: 2,0,0,89e1cb059ba96d1e,d41d8cd98f00b204,jean-philippe@linaro.org,,RULES_HIT:41:355:379:541:800:960:968:973:988:989:1260:1311:1314:1345:1359:1437:1515:1534:1541:1711:1730:1747:1777:1792:2393:2559:2562:2693:3138:3139:3140:3141:3142:3352:3865:3867:3868:4037:4250:4321:5007:6261:6653:6742:10004:11026:11473:11658:11914:12043:12048:12296:12297:12438:12517:12519:12555:12895:13069:13161:13229:13311:13357:13894:14096:14181:14384:14394:14721:21080:21444:21451:21627:21990:30054,0,RBL:209.85.221.67:@linaro.org:.lbl8.mailshell.net-62.2.0.100 66.100.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:ft,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:24,LUA_SUMMARY:none X-HE-Tag: color59_657a906b2e243 X-Filterd-Recvd-Size: 4589 Received: from mail-wr1-f67.google.com (mail-wr1-f67.google.com [209.85.221.67]) by imf12.hostedemail.com (Postfix) with ESMTP for ; Mon, 24 Feb 2020 18:24:57 +0000 (UTC) Received: by mail-wr1-f67.google.com with SMTP id m16so11545099wrx.11 for ; Mon, 24 Feb 2020 10:24:57 -0800 (PST) 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=oVPY2SNV/SUayab6VGyitFWrI9RILHKqjSrcDOg3sBg=; b=OnFOZtrZEFufL7rTBOmlZ40Hq224mutQ/5o0VAFHjr/9ZW5PBMJ0Y7/GDS3/xR/dnD TEsPyQ+iLNysIg1dKsUqwcdOSjQuqzH7iLV5knh5wCpz5/PmbdVT8KcjMEYbg24is9zH t6ACUI7hhk9FGQPHZTGMTb2NY4PcnI9R5MLG1z3wtZTl3ODyonISTbNRfmBpEMohHa92 CKN1L7n6QuxpTjQJxuOJ4Ho23RxS2Njg7SP7AcfdcAfbOXg6vAiEfIa4WG7H9/SStdt+ Gm1dU1ozzhGu8153BnWCyrRxnsfeTzwGIutPWQZPh3v8U2NHd1wgZo4SDlNKF9ic1rWv Y4DA== 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=oVPY2SNV/SUayab6VGyitFWrI9RILHKqjSrcDOg3sBg=; b=kVn3L5tlM+rf/yI/S9mBhesxbUbc+5y8N/jNz77A+wpHgWOyFK7sCOTdWItGzvVgkc PyOcZ1YOg6ptsC7LZ+insHxplFXqV/R6ecWwJ4CoxsfMo6f8PUPYn2209fkFkGthlQ7y cp9N+XygZxwzTbF/Xfl8sA8FNJV5Z26NJTpxOkmSf/nplpl1sg2alVylLjZllE3KzB8z CIITlrKZmGKbnSelX+DeWPp/pMCrEBYH7ATxW8Ag+1ySq7tLZVPBzw4eIIfuwjQ9y/w9 ns3Izbp/gLsrOSc6C8+oPpTkHOeXTGAP7kiFOl0mHBnvJH338MOTGd4Tl677Aq0D9uG3 Wraw== X-Gm-Message-State: APjAAAXDHxjvd4KRctDxn44VT0fLZ40bJhPEyc0D0/4erTFbVAy0pmuv kLsXfqOfRivvRD8OnVNYc/nZ7g== X-Google-Smtp-Source: APXvYqxjjLnHOC5PFDeOpyj527vO7u0PGvC49hWOgOh7ytPa88sYjcO6Bg19gqIDQUy51J2OFlu0Ew== X-Received: by 2002:a5d:4c52:: with SMTP id n18mr2796517wrt.403.1582568696322; Mon, 24 Feb 2020 10:24:56 -0800 (PST) Received: from localhost.localdomain ([2001:171b:c9a8:fbc0:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id n3sm304255wmc.27.2020.02.24.10.24.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Feb 2020 10:24:55 -0800 (PST) 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 Cc: joro@8bytes.org, robh+dt@kernel.org, mark.rutland@arm.com, catalin.marinas@arm.com, will@kernel.org, robin.murphy@arm.com, kevin.tian@intel.com, baolu.lu@linux.intel.com, Jonathan.Cameron@huawei.com, jacob.jun.pan@linux.intel.com, christian.koenig@amd.com, yi.l.liu@intel.com, zhangfei.gao@linaro.org, Bjorn Helgaas Subject: [PATCH v4 24/26] PCI/ATS: Add PRI stubs Date: Mon, 24 Feb 2020 19:23:59 +0100 Message-Id: <20200224182401.353359-25-jean-philippe@linaro.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200224182401.353359-1-jean-philippe@linaro.org> References: <20200224182401.353359-1-jean-philippe@linaro.org> MIME-Version: 1.0 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000022, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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. Cc: Bjorn Helgaas Signed-off-by: Jean-Philippe Brucker Acked-by: Bjorn Helgaas --- 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