From patchwork Thu Apr 1 15:47:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 12178269 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=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 61255C433B4 for ; Thu, 1 Apr 2021 15:53:03 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 7DBB261221 for ; Thu, 1 Apr 2021 15:53:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7DBB261221 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+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=desiato.20200630; 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=eiIurwa75fOyxH9RTsk1XztHT+fo+sTQmEq0I2vLpmg=; b=XCU0eI9AlGVPcazlNBKIiH51n 9Lmc9oPyEU+0/ULwdm+2p/6tk5RzlOdaT8OdhMrmrUtSdHniOh+8yqEgKZL2rRunKKD1kjueCi9GZ V1RR6s6qVW627W5/F7QroADCLhaj0M2J0SujtGcOHiV6YHIXkXgF5aFsgXxulEVB/2sad/TyADkhy fgyi8XT823TCUf+loBXXWNCU43+be7IEH/ZelKTqVQn8fN5lvkdlw2bg6rqtQKsJGE7B582m4sZGB ukmu7z9fEGIlFNSm9TjMeclG6kMMLSxnqcOtxIelTJhraq5UPg75eE1z/foIdDyPRNmWT3W/ctvKD Zi1FwqSow==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lRzb1-00A5S0-1Z; Thu, 01 Apr 2021 15:51:00 +0000 Received: from mail-wr1-x42e.google.com ([2a00:1450:4864:20::42e]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lRzYP-00A4eS-Bz for linux-arm-kernel@lists.infradead.org; Thu, 01 Apr 2021 15:48:26 +0000 Received: by mail-wr1-x42e.google.com with SMTP id k8so2303811wrc.3 for ; Thu, 01 Apr 2021 08:48:16 -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=eQXI58zAvM15zhWnJhtaneb3Z5TB5viNxz6ThN07yYo=; b=qa6RtSxJehdNDHEbtRQDoG4EjnNvOV+ZM3UIaISDIGaRWAvE0zgsBdS4zmi/EHd+7d vI1+IG+eKz3jFoYzdABhdk1UQJ3v0kYL7my4xBC6Ew0NzGfcDAq1gHJOp/gNfS0A0cOc 0nfxHbHzpZ3E3Z1puZpD8a81zWNDrJknkp5TcRFikilIV4KAWo2PzdaD829hl1i0b27S dpeLZA6sLK22L/cdQg646NJpv/pOjmCMMGY9IAabcxPBIKMd+o3CvmqOUybrGArngNiN 6nRmFjJ9Bp1J0f0iZOiYm/qyXM3gAC7ME2d5CWoLxl4G3hSU9rU8piaWw2rFDj90/PNJ VQrw== 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=eQXI58zAvM15zhWnJhtaneb3Z5TB5viNxz6ThN07yYo=; b=h9w0dMY/rM0UVYQU4bTmJn68kuYaf1/nPtfonDJ0v1fBn9D5JELQLEiX3BQqw1JGQm vKohl/31t2cLbPV0Dwc0FnKzEoA2QeOxRSmRpeKuqyiOaADvPJgwCtHVdt3yc9XgITZt vnvXY+4Kf3bhPA1EnGZ69YYx/X0eQRH8ML81zn4dSa/VB6A8sfZUxeTRiIRQlB1XG8US xQAqa7pz7buZ6DoqB97Msonz4sB+gNjzHj18xv6DpogisawLY8yTv+5Lb7tbsuvo1E9o QsopHPL4aW9UXwmdWd3I1OVkjS3TeRpfgvjRYsJ0Ch+DkKsWG+Ejyl4uYbfoO1dIavXM sBcQ== X-Gm-Message-State: AOAM532U5opdY2n0KFJ5R1gA6biXWYSKuzzyv9UTM4KTtBLthhQ62dFt QSfAMUtfn+D63nThpMO4qiVG/A== X-Google-Smtp-Source: ABdhPJwaZfUexbQcEF/4acyTvCXSYeM92XQ1EEDNpmG5V7T4wXNFsmzkO4N4IY6aRHJTe4JNVNkWtA== X-Received: by 2002:adf:8151:: with SMTP id 75mr10543223wrm.152.1617292095498; Thu, 01 Apr 2021 08:48:15 -0700 (PDT) Received: from localhost.localdomain ([2001:1715:4e26:a7e0:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id y8sm8722505wmi.46.2021.04.01.08.48.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Apr 2021 08:48:14 -0700 (PDT) From: Jean-Philippe Brucker To: joro@8bytes.org, will@kernel.org Subject: [PATCH v14 02/10] iommu/arm-smmu-v3: Use device properties for pasid-num-bits Date: Thu, 1 Apr 2021 17:47:11 +0200 Message-Id: <20210401154718.307519-3-jean-philippe@linaro.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210401154718.307519-1-jean-philippe@linaro.org> References: <20210401154718.307519-1-jean-philippe@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210401_164817_876362_8AA7D612 X-CRM114-Status: GOOD ( 15.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vivek.gautam@arm.com, guohanjun@huawei.com, zhukeqian1@huawei.com, Jean-Philippe Brucker , lorenzo.pieralisi@arm.com, wangzhou1@hisilicon.com, linux-acpi@vger.kernel.org, zhangfei.gao@linaro.org, lenb@kernel.org, devicetree@vger.kernel.org, kevin.tian@intel.com, jacob.jun.pan@linux.intel.com, eric.auger@redhat.com, robh+dt@kernel.org, Jonathan.Cameron@huawei.com, linux-arm-kernel@lists.infradead.org, rjw@rjwysocki.net, shameerali.kolothum.thodi@huawei.com, iommu@lists.linux-foundation.org, sudeep.holla@arm.com, robin.murphy@arm.com, linux-accelerators@lists.ozlabs.org, baolu.lu@linux.intel.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The pasid-num-bits property shouldn't need a dedicated fwspec field, it's a job for device properties. Add properties for IORT, and access the number of PASID bits using device_property_read_u32(). Suggested-by: Robin Murphy Acked-by: Jonathan Cameron Acked-by: Will Deacon Reviewed-by: Eric Auger Signed-off-by: Jean-Philippe Brucker Acked-by: Hanjun Guo --- include/linux/iommu.h | 2 -- drivers/acpi/arm64/iort.c | 13 +++++++------ drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 3 ++- drivers/iommu/of_iommu.c | 5 ----- 4 files changed, 9 insertions(+), 14 deletions(-) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index 1d422bf722a1..16ce75693d83 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -572,7 +572,6 @@ struct iommu_group *fsl_mc_device_group(struct device *dev); * @ops: ops for this device's IOMMU * @iommu_fwnode: firmware handle for this device's IOMMU * @flags: IOMMU_FWSPEC_* flags - * @num_pasid_bits: number of PASID bits supported by this device * @num_ids: number of associated device IDs * @ids: IDs which this device may present to the IOMMU */ @@ -580,7 +579,6 @@ struct iommu_fwspec { const struct iommu_ops *ops; struct fwnode_handle *iommu_fwnode; u32 flags; - u32 num_pasid_bits; unsigned int num_ids; u32 ids[]; }; diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 2494138a6905..3912a1f6058e 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -968,15 +968,16 @@ static int iort_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data) static void iort_named_component_init(struct device *dev, struct acpi_iort_node *node) { + struct property_entry props[2] = {}; struct acpi_iort_named_component *nc; - struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev); - - if (!fwspec) - return; nc = (struct acpi_iort_named_component *)node->node_data; - fwspec->num_pasid_bits = FIELD_GET(ACPI_IORT_NC_PASID_BITS, - nc->node_flags); + props[0] = PROPERTY_ENTRY_U32("pasid-num-bits", + FIELD_GET(ACPI_IORT_NC_PASID_BITS, + nc->node_flags)); + + if (device_add_properties(dev, props)) + dev_warn(dev, "Could not add device properties\n"); } static int iort_nc_iommu_map(struct device *dev, struct acpi_iort_node *node) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 941ba5484731..bd77495023c8 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2395,7 +2395,8 @@ static struct iommu_device *arm_smmu_probe_device(struct device *dev) } } - master->ssid_bits = min(smmu->ssid_bits, fwspec->num_pasid_bits); + device_property_read_u32(dev, "pasid-num-bits", &master->ssid_bits); + master->ssid_bits = min(smmu->ssid_bits, master->ssid_bits); /* * Note that PASID must be enabled before, and disabled after ATS: diff --git a/drivers/iommu/of_iommu.c b/drivers/iommu/of_iommu.c index e505b9130a1c..a9d2df001149 100644 --- a/drivers/iommu/of_iommu.c +++ b/drivers/iommu/of_iommu.c @@ -210,11 +210,6 @@ const struct iommu_ops *of_iommu_configure(struct device *dev, of_pci_iommu_init, &info); } else { err = of_iommu_configure_device(master_np, dev, id); - - fwspec = dev_iommu_fwspec_get(dev); - if (!err && fwspec) - of_property_read_u32(master_np, "pasid-num-bits", - &fwspec->num_pasid_bits); } /*