From patchwork Mon Apr 4 08:06:57 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Auger Eric X-Patchwork-Id: 64952 Delivered-To: patches@linaro.org Received: by 10.112.199.169 with SMTP id jl9csp1047179lbc; Mon, 4 Apr 2016 01:07:17 -0700 (PDT) X-Received: by 10.112.173.71 with SMTP id bi7mr6370743lbc.61.1459757237220; Mon, 04 Apr 2016 01:07:17 -0700 (PDT) Return-Path: Received: from mail-lf0-x22f.google.com (mail-lf0-x22f.google.com. [2a00:1450:4010:c07::22f]) by mx.google.com with ESMTPS id aq5si15229804lbc.148.2016.04.04.01.07.17 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 04 Apr 2016 01:07:17 -0700 (PDT) Received-SPF: pass (google.com: domain of eric.auger@linaro.org designates 2a00:1450:4010:c07::22f as permitted sender) client-ip=2a00:1450:4010:c07::22f; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org; spf=pass (google.com: domain of eric.auger@linaro.org designates 2a00:1450:4010:c07::22f as permitted sender) smtp.mailfrom=eric.auger@linaro.org; dmarc=pass (p=NONE dis=NONE) header.from=linaro.org Received: by mail-lf0-x22f.google.com with SMTP id p188so130071074lfd.0 for ; Mon, 04 Apr 2016 01:07:17 -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; bh=++A9qbs6Y4gWSijr4AYGFQQjM3KdLe/AI2N/emgJeyU=; b=Z/UGTisQO8z4ibJnnoCp/4B4HGyd5kvBxVi1dgUQQsEppP4+eQm9Z9EPoZ1xHoyqlt 54ud2PRr2hAxkC8U9Wy00Ql0ZZAbPJUTCsgBAKxtVURh2dg4GhOmvQxdFo/t9l8z4Knd L/Fzgi8dvPPxcKczWqk436EHG5k8pmJVos674= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=++A9qbs6Y4gWSijr4AYGFQQjM3KdLe/AI2N/emgJeyU=; b=LBz/Guz668NzuUESkcgeXE9M2R3uamQA+kUt3VKijUIQD/KB5p3DB2syVtUwvxaY0T 5yyjZGSDRxKZpLRE0lb2mfdGEbpNhAjvJ32VhzcxGfG1TMe1g5EsF8PevIfWXHKa9JyB K8AgeGCg3xwokPC+uLhE9YAeNYS2gehyFvLIoKOOHwFCg7Vj2gaLYiTURILIP/+0JSRl kJjR99iG81hOJ36e1yfKm/abHeuVQIpUdGtldphrWuYzG02WwmEyhrGti0J1qKasKxqN ImhHZ1x+wcTLhimn2+6MSDCMWEAkfEih7mxfPU1rekeuRVX86LHyPQz7AopJmKsSuBm9 90ng== X-Gm-Message-State: AD7BkJIB7XISGeyE0h3eBnhUjAHyDdnP6OdFmWgPf5gmXzOYFr2Ns1X5wKfUhiWybX3nKGuEAL8= X-Received: by 10.194.23.7 with SMTP id i7mr17100557wjf.9.1459757237035; Mon, 04 Apr 2016 01:07:17 -0700 (PDT) Return-Path: Received: from new-host-2.home (LMontsouris-657-1-37-90.w80-11.abo.wanadoo.fr. [80.11.198.90]) by smtp.gmail.com with ESMTPSA id m67sm7505239wma.3.2016.04.04.01.07.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 04 Apr 2016 01:07:15 -0700 (PDT) From: Eric Auger To: eric.auger@st.com, eric.auger@linaro.org, robin.murphy@arm.com, alex.williamson@redhat.com, will.deacon@arm.com, joro@8bytes.org, tglx@linutronix.de, jason@lakedaemon.net, marc.zyngier@arm.com, christoffer.dall@linaro.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org Cc: suravee.suthikulpanit@amd.com, patches@linaro.org, linux-kernel@vger.kernel.org, Manish.Jaggi@caviumnetworks.com, Bharat.Bhushan@freescale.com, pranav.sawargaonkar@gmail.com, p.fedin@samsung.com, iommu@lists.linux-foundation.org, Jean-Philippe.Brucker@arm.com, julien.grall@arm.com Subject: [PATCH v6 2/7] iommu/arm-smmu: advertise DOMAIN_ATTR_MSI_MAPPING attribute Date: Mon, 4 Apr 2016 08:06:57 +0000 Message-Id: <1459757222-2668-3-git-send-email-eric.auger@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1459757222-2668-1-git-send-email-eric.auger@linaro.org> References: <1459757222-2668-1-git-send-email-eric.auger@linaro.org> On ARM, MSI write transactions from device upstream to the smmu are conveyed through the iommu. Therefore target physical addresses must be mapped and DOMAIN_ATTR_MSI_MAPPING is set to advertise this requirement on arm-smmu and arm-smmu-v3. Signed-off-by: Eric Auger Signed-off-by: Bharat Bhushan --- v4 -> v5: - don't handle fsl_pamu_domain anymore - handle arm-smmu-v3 --- drivers/iommu/arm-smmu-v3.c | 2 ++ drivers/iommu/arm-smmu.c | 2 ++ 2 files changed, 4 insertions(+) -- 1.9.1 diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 4ff73ff..a077a35 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1900,6 +1900,8 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain, case DOMAIN_ATTR_NESTING: *(int *)data = (smmu_domain->stage == ARM_SMMU_DOMAIN_NESTED); return 0; + case DOMAIN_ATTR_MSI_MAPPING: + return 0; default: return -ENODEV; } diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 5158feb..6562752 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1429,6 +1429,8 @@ static int arm_smmu_domain_get_attr(struct iommu_domain *domain, case DOMAIN_ATTR_NESTING: *(int *)data = (smmu_domain->stage == ARM_SMMU_DOMAIN_NESTED); return 0; + case DOMAIN_ATTR_MSI_MAPPING: + return 0; default: return -ENODEV; }