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b=UMteQfw3bNUjP8dh2k6Ao3kW72+S5+igV6RiYJWullYnmEQhKMiBBZafqyUpcMdOUrLO59 bXb5alSfantz+AOlBwYGrDg/8rAChp/oYxuyzev+OiNOm5eN7//Ft1+UEdC43yIR4jdjor EVcV/xxm7pua49rLXPa5jqptwclJdao= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-590-mUeifrzjP9-60bEOIt_qug-1; Mon, 16 Nov 2020 05:44:57 -0500 X-MC-Unique: mUeifrzjP9-60bEOIt_qug-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 012E9108E1A2; Mon, 16 Nov 2020 10:44:50 +0000 (UTC) Received: from laptop.redhat.com (ovpn-113-230.ams2.redhat.com [10.36.113.230]) by smtp.corp.redhat.com (Postfix) with ESMTP id B14AC5C5AF; Mon, 16 Nov 2020 10:44:39 +0000 (UTC) From: Eric Auger To: eric.auger.pro@gmail.com, eric.auger@redhat.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, will@kernel.org, joro@8bytes.org, maz@kernel.org, robin.murphy@arm.com Subject: [PATCH v12 12/15] iommu/smmuv3: Implement bind/unbind_guest_msi Date: Mon, 16 Nov 2020 11:43:13 +0100 Message-Id: <20201116104316.31816-13-eric.auger@redhat.com> In-Reply-To: <20201116104316.31816-1-eric.auger@redhat.com> References: <20201116104316.31816-1-eric.auger@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Cc: jean-philippe@linaro.org, vivek.gautam@arm.com, alex.williamson@redhat.com, zhangfei.gao@linaro.org X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" The bind/unbind_guest_msi() callbacks check the domain is NESTED and redirect to the dma-iommu implementation. Signed-off-by: Eric Auger --- v6 -> v7: - remove device handle argument --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 43 +++++++++++++++++++++ 1 file changed, 43 insertions(+) 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 0c5ab4005f76..5aa9e0e747fa 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2738,6 +2738,47 @@ static void arm_smmu_get_resv_regions(struct device *dev, iommu_dma_get_resv_regions(dev, head); } +static int +arm_smmu_bind_guest_msi(struct iommu_domain *domain, + dma_addr_t giova, phys_addr_t gpa, size_t size) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + struct arm_smmu_device *smmu; + int ret = -EINVAL; + + mutex_lock(&smmu_domain->init_mutex); + smmu = smmu_domain->smmu; + if (!smmu) + goto out; + + if (smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED) + goto out; + + ret = iommu_dma_bind_guest_msi(domain, giova, gpa, size); +out: + mutex_unlock(&smmu_domain->init_mutex); + return ret; +} + +static void +arm_smmu_unbind_guest_msi(struct iommu_domain *domain, dma_addr_t giova) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + struct arm_smmu_device *smmu; + + mutex_lock(&smmu_domain->init_mutex); + smmu = smmu_domain->smmu; + if (!smmu) + goto unlock; + + if (smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED) + goto unlock; + + iommu_dma_unbind_guest_msi(domain, giova); +unlock: + mutex_unlock(&smmu_domain->init_mutex); +} + static int arm_smmu_attach_pasid_table(struct iommu_domain *domain, struct iommu_pasid_table_config *cfg) { @@ -2970,6 +3011,8 @@ static struct iommu_ops arm_smmu_ops = { .attach_pasid_table = arm_smmu_attach_pasid_table, .detach_pasid_table = arm_smmu_detach_pasid_table, .cache_invalidate = arm_smmu_cache_invalidate, + .bind_guest_msi = arm_smmu_bind_guest_msi, + .unbind_guest_msi = arm_smmu_unbind_guest_msi, .dev_has_feat = arm_smmu_dev_has_feature, .dev_feat_enabled = arm_smmu_dev_feature_enabled, .dev_enable_feat = arm_smmu_dev_enable_feature, -- 2.21.3 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu