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From: Eric Auger <eric.auger@redhat.com>
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,
	joro@8bytes.org, alex.williamson@redhat.com,
	jacob.jun.pan@linux.intel.com, yi.l.liu@intel.com,
	jean-philippe.brucker@arm.com, will.deacon@arm.com,
	robin.murphy@arm.com
Cc: marc.zyngier@arm.com
Subject: [PATCH v10 12/13] iommu/smmuv3: Implement bind/unbind_guest_msi
Date: Fri, 20 Mar 2020 17:09:31 +0100	[thread overview]
Message-ID: <20200320160932.27222-13-eric.auger@redhat.com> (raw)
In-Reply-To: <20200320160932.27222-1-eric.auger@redhat.com>

The bind/unbind_guest_msi() callbacks check the domain
is NESTED and redirect to the dma-iommu implementation.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

---

v6 -> v7:
- remove device handle argument
---
 drivers/iommu/arm-smmu-v3.c | 43 +++++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 106f9c563823..c98ee8edf5cf 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -3371,6 +3371,47 @@ 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)
 {
@@ -3540,6 +3581,8 @@ 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,
 	.pgsize_bitmap		= -1UL, /* Restricted during device attach */
 };
 
-- 
2.20.1

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  parent reply	other threads:[~2020-03-20 16:11 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-20 16:09 [PATCH v10 00/13] SMMUv3 Nested Stage Setup (IOMMU part) Eric Auger
2020-03-20 16:09 ` [PATCH v10 01/13] iommu: Introduce attach/detach_pasid_table API Eric Auger
2020-03-20 16:09 ` [PATCH v10 02/13] iommu: Introduce bind/unbind_guest_msi Eric Auger
2020-03-20 16:09 ` [PATCH v10 03/13] iommu/arm-smmu-v3: Maintain a SID->device structure Eric Auger
2020-03-20 16:09 ` [PATCH v10 04/13] iommu/smmuv3: Dynamically allocate s1_cfg and s2_cfg Eric Auger
2020-03-20 16:09 ` [PATCH v10 05/13] iommu/smmuv3: Get prepared for nested stage support Eric Auger
2020-03-20 16:09 ` [PATCH v10 06/13] iommu/smmuv3: Implement attach/detach_pasid_table Eric Auger
2020-03-20 16:09 ` [PATCH v10 07/13] iommu/smmuv3: Allow stage 1 invalidation with unmanaged ASIDs Eric Auger
2020-03-20 16:09 ` [PATCH v10 08/13] iommu/smmuv3: Implement cache_invalidate Eric Auger
2020-03-20 16:09 ` [PATCH v10 09/13] dma-iommu: Implement NESTED_MSI cookie Eric Auger
2020-03-20 22:20   ` kbuild test robot
2020-03-20 16:09 ` [PATCH v10 10/13] iommu/smmuv3: Nested mode single MSI doorbell per domain enforcement Eric Auger
2020-03-20 16:09 ` [PATCH v10 11/13] iommu/smmuv3: Enforce incompatibility between nested mode and HW MSI regions Eric Auger
2020-03-20 16:09 ` Eric Auger [this message]
2020-03-20 16:09 ` [PATCH v10 13/13] iommu/smmuv3: Report non recoverable faults Eric Auger

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