From: Lu Baolu <baolu.lu@linux.intel.com>
To: Joerg Roedel <joro@8bytes.org>, Jason Gunthorpe <jgg@nvidia.com>,
Christoph Hellwig <hch@infradead.org>,
Kevin Tian <kevin.tian@intel.com>,
Ashok Raj <ashok.raj@intel.com>, Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Jean-Philippe Brucker <jean-philippe@linaro.com>
Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
Jacob jun Pan <jacob.jun.pan@intel.com>
Subject: [PATCH RFC v2 06/11] iommu/vt-d: Add SVA domain support
Date: Tue, 29 Mar 2022 13:37:55 +0800 [thread overview]
Message-ID: <20220329053800.3049561-7-baolu.lu@linux.intel.com> (raw)
In-Reply-To: <20220329053800.3049561-1-baolu.lu@linux.intel.com>
Add support for SVA domain allocation and provide an SVA-specific
iommu_domain_ops.
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
include/linux/intel-iommu.h | 1 +
drivers/iommu/intel/iommu.c | 10 ++++++++++
drivers/iommu/intel/svm.c | 37 +++++++++++++++++++++++++++++++++++++
3 files changed, 48 insertions(+)
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index 2f9891cb3d00..c14283137fb5 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -744,6 +744,7 @@ void intel_svm_unbind(struct iommu_sva *handle);
u32 intel_svm_get_pasid(struct iommu_sva *handle);
int intel_svm_page_response(struct device *dev, struct iommu_fault_event *evt,
struct iommu_page_response *msg);
+extern const struct iommu_domain_ops intel_svm_domain_ops;
struct intel_svm_dev {
struct list_head list;
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index c1b91bce1530..5eae7cf9bee5 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -4318,6 +4318,16 @@ static struct iommu_domain *intel_iommu_domain_alloc(unsigned type)
return domain;
case IOMMU_DOMAIN_IDENTITY:
return &si_domain->domain;
+#ifdef CONFIG_INTEL_IOMMU_SVM
+ case IOMMU_DOMAIN_SVA:
+ dmar_domain = alloc_domain(type);
+ if (!dmar_domain)
+ return NULL;
+ domain = &dmar_domain->domain;
+ domain->ops = &intel_svm_domain_ops;
+
+ return domain;
+#endif /* CONFIG_INTEL_IOMMU_SVM */
default:
return NULL;
}
diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
index ee5ecde5b318..8f59dd641b2d 100644
--- a/drivers/iommu/intel/svm.c
+++ b/drivers/iommu/intel/svm.c
@@ -932,3 +932,40 @@ int intel_svm_page_response(struct device *dev,
mutex_unlock(&pasid_mutex);
return ret;
}
+
+static int intel_svm_attach_dev_pasid(struct iommu_domain *domain,
+ struct device *dev, ioasid_t pasid)
+{
+ struct device_domain_info *info = dev_iommu_priv_get(dev);
+ struct mm_struct *mm = iommu_sva_domain_mm(domain);
+ struct intel_iommu *iommu = info->iommu;
+ struct iommu_sva *sva;
+ int ret = 0;
+
+ mutex_lock(&pasid_mutex);
+ sva = intel_svm_bind_mm(iommu, dev, mm);
+ if (IS_ERR(sva))
+ ret = PTR_ERR(sva);
+ mutex_unlock(&pasid_mutex);
+
+ return ret;
+}
+
+static void intel_svm_detach_dev_pasid(struct iommu_domain *domain,
+ struct device *dev, ioasid_t pasid)
+{
+ mutex_lock(&pasid_mutex);
+ intel_svm_unbind_mm(dev, pasid);
+ mutex_unlock(&pasid_mutex);
+}
+
+static void intel_svm_domain_free(struct iommu_domain *domain)
+{
+ kfree(domain);
+}
+
+const struct iommu_domain_ops intel_svm_domain_ops = {
+ .attach_dev_pasid = intel_svm_attach_dev_pasid,
+ .detach_dev_pasid = intel_svm_detach_dev_pasid,
+ .free = intel_svm_domain_free,
+};
--
2.25.1
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next prev parent reply other threads:[~2022-03-29 5:40 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-29 5:37 [PATCH RFC v2 00/11] iommu: SVA and IOPF refactoring Lu Baolu
2022-03-29 5:37 ` [PATCH RFC v2 01/11] iommu: Add pasid_bits field in struct dev_iommu Lu Baolu
2022-03-29 21:00 ` Jacob Pan
2022-03-30 4:30 ` Lu Baolu
2022-03-30 7:05 ` Tian, Kevin
2022-03-30 11:58 ` Lu Baolu
2022-03-29 5:37 ` [PATCH RFC v2 02/11] iommu: Add iommu_group_singleton_lockdown() Lu Baolu
2022-03-29 8:42 ` Tian, Kevin
2022-03-29 11:42 ` Jason Gunthorpe via iommu
2022-03-30 6:50 ` Tian, Kevin
2022-03-30 11:57 ` Lu Baolu
2022-03-30 11:58 ` Jason Gunthorpe via iommu
2022-03-30 14:12 ` Tian, Kevin
2022-03-30 14:30 ` Jason Gunthorpe via iommu
2022-04-02 7:12 ` Tian, Kevin
2022-04-02 23:29 ` Jason Gunthorpe via iommu
2022-04-06 10:02 ` Lu Baolu
2022-04-06 10:44 ` Tian, Kevin
2022-04-06 11:03 ` Lu Baolu
2022-04-06 23:56 ` Tian, Kevin
2022-03-30 14:18 ` Tian, Kevin
2022-03-30 15:04 ` Alex Williamson
2022-04-04 5:43 ` Lu Baolu
2022-04-04 17:24 ` Jason Gunthorpe via iommu
2022-04-05 6:12 ` Lu Baolu
2022-04-05 14:10 ` Jason Gunthorpe via iommu
2022-04-06 9:51 ` Lu Baolu
2022-04-01 6:20 ` Yi Liu
2022-04-01 11:52 ` Jason Gunthorpe via iommu
2022-03-30 4:59 ` Lu Baolu
2022-03-30 6:55 ` Tian, Kevin
2022-04-01 5:49 ` Yi Liu
2022-03-29 5:37 ` [PATCH RFC v2 03/11] iommu/sva: Add iommu_domain type for SVA Lu Baolu
2022-03-29 21:38 ` Jacob Pan
2022-03-30 4:35 ` Lu Baolu
2022-03-30 19:02 ` Jason Gunthorpe via iommu
2022-04-02 8:43 ` Tian, Kevin
2022-04-02 23:32 ` Jason Gunthorpe via iommu
2022-04-04 6:09 ` Lu Baolu
2022-04-06 1:00 ` Tian, Kevin
2022-04-06 1:23 ` Jason Gunthorpe via iommu
2022-04-06 5:58 ` Tian, Kevin
2022-04-06 12:32 ` Robin Murphy
2022-04-06 13:06 ` Jason Gunthorpe via iommu
2022-04-06 13:37 ` Robin Murphy
2022-04-06 14:01 ` Jason Gunthorpe via iommu
2022-04-07 0:11 ` Tian, Kevin
2022-03-29 5:37 ` [PATCH RFC v2 04/11] iommu: Add attach/detach_dev_pasid domain ops Lu Baolu
2022-03-30 19:08 ` Jason Gunthorpe via iommu
2022-04-04 6:47 ` Lu Baolu
2022-03-29 5:37 ` [PATCH RFC v2 05/11] iommu/vt-d: Remove SVM_FLAG_SUPERVISOR_MODE suport Lu Baolu
2022-03-29 5:37 ` Lu Baolu [this message]
2022-03-30 19:09 ` [PATCH RFC v2 06/11] iommu/vt-d: Add SVA domain support Jason Gunthorpe via iommu
2022-04-04 6:52 ` Lu Baolu
2022-03-29 5:37 ` [PATCH RFC v2 07/11] arm-smmu-v3/sva: " Lu Baolu
2022-03-29 5:37 ` [PATCH RFC v2 08/11] iommu/sva: Use attach/detach_pasid_dev in SVA interfaces Lu Baolu
2022-03-31 20:59 ` Jacob Pan
2022-03-31 22:26 ` Jason Gunthorpe via iommu
2022-04-04 5:55 ` Lu Baolu
2022-03-29 5:37 ` [PATCH RFC v2 09/11] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-03-29 5:37 ` [PATCH RFC v2 10/11] iommu: Per-domain I/O page fault handling Lu Baolu
2022-03-29 5:38 ` [PATCH RFC v2 11/11] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu
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