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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 0C0BEC43603 for ; Tue, 17 Dec 2019 15:21:35 +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 D6E2921582 for ; Tue, 17 Dec 2019 15:21:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="lQdbld/X"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="zYpxZTb+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D6E2921582 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+infradead-linux-arm-kernel=archiver.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:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=HQCr9nDocPtL0X3B1KlFuKKOeEYxFkgEL9Yjl4gSrCs=; b=lQdbld/XGoM1dJ QbdK47Wr0SJvgUO8JaKCefTNe5dlnqxIUEsnuEA6pPuA2EZXw1AXGZNmDBDc48/0FkC6GavOKe0tX vue5yWpJ4fIhTajebP01nyY7MnHs/HDKu7FXrJcbTnpN5G142wU8FrQQKdT/08PWCyjbodbmhCAiE lCw3uMBOdElT/0gLCI67slpoiAMgvmzqFCRgvRnN0KbI+7fPgqOgJr+mkO4nZLRHMK/61d0oivivF 3tad63oMEZ/EUlL23VtqxG84crAgkBH31I4khV/uCLy716zE5eJupzh720l2uk/E7vUQCnUe6WH9j 3AggxD8Vim3FJLu6XMJg==; 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 1ihEfF-0004Dz-CM; Tue, 17 Dec 2019 15:21:33 +0000 Received: from mail-wr1-x444.google.com ([2a00:1450:4864:20::444]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ihEfC-0004CS-Hk for linux-arm-kernel@lists.infradead.org; Tue, 17 Dec 2019 15:21:31 +0000 Received: by mail-wr1-x444.google.com with SMTP id y17so11737829wrh.5 for ; Tue, 17 Dec 2019 07:21:29 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=/U6kIWQCRrt5t46RzQq83Cexhdp96mlj0bDDsvo61J0=; b=zYpxZTb+W4CafynX/GjHKf3cPY+ZcFMKhPepfPIsR2ENTx1vIn6Qcj+OWPPMn78rvn 8ndC9NFyie5drvYpo3BgXxap1zVlvHUw7Tp3zeqOCom9nhTtk8XnZ9PVVeWp59fjML+q md0iB6uixCMDeJAQvm1Dy741/FBYwIxlVuhB4OvmccJdlNQ5C5VG1/1pEAyRS8Rui4Cz Q8V633DYjfwnqDBdCv2Jzz/Bum12yws5o8/xTlLHVliu03pI/CGDZc0wgx/5bhQYaVhX JKeGrk+H7oFKNRtKza+FurEMK4Rh4OJWVScTuxx5EVgA/01UT5CgEcldpppYf1h/nVID rKhQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=/U6kIWQCRrt5t46RzQq83Cexhdp96mlj0bDDsvo61J0=; b=QG0rG5h/gLSk47jJrMTGtBnynJtU+GiUdjbs0snUEvWVuNC24xBMhVB4LSd/XDcR8G wovSCc8wzYjMbxOZgTdYjOU+zLn1bzekbancxSQSCgFZrEoo5kpf5UbUPQwOVqRSOIJL LTG9PGaiMlMeqSaVTclxDl+HmMZZkxAKtalAdP27NxmKa8mej4/gBHUf1AaE81oWe88p k4K+NNLeFEm326BFnZPtMuaIbgrN0+1M6nKt5eaReD1sq5jwk0prK3TvcMPLzy+Q6ehp U5NFoHsb/fLqSqfMGfdaeHiidtfJYPmYiHbMvJ5e73wCGp/9gshH6rtstlDsv3PRsBcw OoXg== X-Gm-Message-State: APjAAAUpeLMuj0nGtlQmyTv3ia8C1KzYxiC2mhE2PHDyCy580E/uGUI5 HOZcu6d9qzrO90f9T9RzIZpdmQ== X-Google-Smtp-Source: APXvYqxGZpcrEU2hF1yXvjy3TQGwn9Ed0+ek9wFSXQ/mi7LzOCYo9KI6i5ueC9DEOAbG9y2v+MiMeg== X-Received: by 2002:adf:de84:: with SMTP id w4mr35905632wrl.97.1576596087819; Tue, 17 Dec 2019 07:21:27 -0800 (PST) Received: from myrica (adsl-84-227-176-239.adslplus.ch. [84.227.176.239]) by smtp.gmail.com with ESMTPSA id s16sm25985278wrn.78.2019.12.17.07.21.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Dec 2019 07:21:27 -0800 (PST) Date: Tue, 17 Dec 2019 16:21:08 +0100 From: Jean-Philippe Brucker To: Auger Eric Subject: Re: [PATCH v3 03/13] iommu/arm-smmu-v3: Support platform SSID Message-ID: <20191217152108.GB2305883@myrica> References: <20191209180514.272727-1-jean-philippe@linaro.org> <20191209180514.272727-4-jean-philippe@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191217_072130_596600_80D2E2A6 X-CRM114-Status: UNSURE ( 9.58 ) X-CRM114-Notice: Please train this message. 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: mark.rutland@arm.com, devicetree@vger.kernel.org, lorenzo.pieralisi@arm.com, linux-pci@vger.kernel.org, joro@8bytes.org, sudeep.holla@arm.com, rjw@rjwysocki.net, robin.murphy@arm.com, linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org, robh+dt@kernel.org, jonathan.cameron@huawei.com, guohanjun@huawei.com, bhelgaas@google.com, zhangfei.gao@linaro.org, will@kernel.org, linux-arm-kernel@lists.infradead.org, lenb@kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Eric, On Tue, Dec 17, 2019 at 12:05:18PM +0100, Auger Eric wrote: > > + fwspec = dev_iommu_fwspec_get(dev); > > + if (!err && fwspec) > > + of_property_read_u32(master_np, "pasid-num-bits", > > + &fwspec->num_pasid_bits); > > + } > This patch dedicates to platform devices however I fail to understand, > at that stage, how/when do you retrieve/store the same max capability > for PCI devices? For PCI devices, the max capability is only described by the PCIe PASID capability, not by firmware. Patch 13 deals with PCI by setting masted->ssid_bits from the PASID capability directly, ignoring fwspec->num_pasid_bits. > Besides, > > Reviewed-by: Eric Auger Thanks! Jean _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel