From patchwork Wed Jan 15 12:52:38 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: 205678 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=-9.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 0A5F8C35248 for ; Wed, 15 Jan 2020 12:53:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BE09124685 for ; Wed, 15 Jan 2020 12:53:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="dHOXOKHo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729074AbgAOMxq (ORCPT ); Wed, 15 Jan 2020 07:53:46 -0500 Received: from mail-wm1-f67.google.com ([209.85.128.67]:34066 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726100AbgAOMxn (ORCPT ); Wed, 15 Jan 2020 07:53:43 -0500 Received: by mail-wm1-f67.google.com with SMTP id w5so4685038wmi.1 for ; Wed, 15 Jan 2020 04:53:41 -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=k0PTgEa8Z2EtxKNp+bXlU3gMIeIQMMd4dvAJJmx7ucE=; b=dHOXOKHoTxItty8Q5696Mr+qbLuMsFa+MTSqKPLipIvl2oTCGz6ML1mpeZ/hKlDF/w 0zv4zm331wgT2+KoHIxNr0EbnRGGQsLvPJyytnYPhCnUUDZJbkaemFEkNnu+UetF8/hv V63rc3osvZrEsMSG1CYkzOLHHYC2msMAlTjspE9QoVjnwGTB+KftSreLBNSx3XxcNWWz 7qWRy0hn5i3tRV6yEIj4f9s5mv4xFHEO4sLGFIYhAVyLWiQK84QoCPspbr09hIqHacJb keyJbpDsHaUOhTQQceVDxe4Do+EaZFZskEG7KV/7urpQlMM39SamhpMjxm3wKwlF46iZ BDDA== 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=k0PTgEa8Z2EtxKNp+bXlU3gMIeIQMMd4dvAJJmx7ucE=; b=ijqK8nzkJFFy3pLPWYdwFONTBD3H6d7EzJN4ckLVHRcXO5qP4XfwXX0l8Ze7uO1Me0 wC8XiMYiPZs3WQhrmVhnE6MCzsBKALP5HoGXiiLTH0h674GxE2HB0buUANKVDXgUOlin A84xJtDUMBcoEs71KRE8skLoNseZPJ7fUe0V8Z89M+G7XS38HQhuQ5nzLzFyNQde+46+ ba5Oi5YuKFckwSw3pkgAdYhAik0QAg8PysBaTXfyhv2gWZRms/qgDVILB5Y6/A7u9dQM B0Q7iHupu7KWMctPN//s9Z4JlkbB4/KO8TkpR32Hy9AgW271VD7rN++6nmd9cSHkz6wL JqJQ== X-Gm-Message-State: APjAAAV3avXDA2xzu3WDmEP9De7ej6fjgkTsA2mnbRhmBjw6KWE7rA3W VDDOqRG8zPGbRynf14etFKYXQg== X-Google-Smtp-Source: APXvYqw9Mt6OhEbO1QMqXTowh5t7SCfN3PgnBvH6KOJ1spMG2hboA0nCSsAfuEDMtgnKjfCtqj0iOg== X-Received: by 2002:a7b:c3d7:: with SMTP id t23mr34564949wmj.33.1579092821258; Wed, 15 Jan 2020 04:53:41 -0800 (PST) Received: from localhost.localdomain ([2001:171b:2266:ba60:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id d12sm25196171wrp.62.2020.01.15.04.53.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Jan 2020 04:53:40 -0800 (PST) From: Jean-Philippe Brucker To: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, devicetree@vger.kernel.org, iommu@lists.linux-foundation.org, will@kernel.org Cc: joro@8bytes.org, robh+dt@kernel.org, mark.rutland@arm.com, lorenzo.pieralisi@arm.com, guohanjun@huawei.com, sudeep.holla@arm.com, rjw@rjwysocki.net, lenb@kernel.org, robin.murphy@arm.com, bhelgaas@google.com, eric.auger@redhat.com, jonathan.cameron@huawei.com, zhangfei.gao@linaro.org Subject: [PATCH v5 12/13] PCI/ATS: Add PASID stubs Date: Wed, 15 Jan 2020 13:52:38 +0100 Message-Id: <20200115125239.136759-13-jean-philippe@linaro.org> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200115125239.136759-1-jean-philippe@linaro.org> References: <20200115125239.136759-1-jean-philippe@linaro.org> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The SMMUv3 driver, which may be built without CONFIG_PCI, will soon gain PASID support. Partially revert commit c6e9aefbf9db ("PCI/ATS: Remove unused PRI and PASID stubs") to re-introduce the PASID stubs, and avoid adding more #ifdefs to the SMMU driver. Acked-by: Bjorn Helgaas Reviewed-by: Eric Auger Reviewed-by: Jonathan Cameron Signed-off-by: Jean-Philippe Brucker --- include/linux/pci-ats.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/linux/pci-ats.h b/include/linux/pci-ats.h index 5d62e78946a3..d08f0869f121 100644 --- a/include/linux/pci-ats.h +++ b/include/linux/pci-ats.h @@ -33,6 +33,9 @@ void pci_disable_pasid(struct pci_dev *pdev); int pci_pasid_features(struct pci_dev *pdev); int pci_max_pasids(struct pci_dev *pdev); #else /* CONFIG_PCI_PASID */ +static inline int pci_enable_pasid(struct pci_dev *pdev, int features) +{ return -EINVAL; } +static inline void pci_disable_pasid(struct pci_dev *pdev) { } static inline int pci_pasid_features(struct pci_dev *pdev) { return -EINVAL; } static inline int pci_max_pasids(struct pci_dev *pdev)