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 04/11] iommu/vt-d: Add SVA domain support
Date: Sun, 20 Mar 2022 14:40:23 +0800 [thread overview]
Message-ID: <20220320064030.2936936-5-baolu.lu@linux.intel.com> (raw)
In-Reply-To: <20220320064030.2936936-1-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 | 12 ++++++++++++
drivers/iommu/intel/svm.c | 34 ++++++++++++++++++++++++++++++++++
3 files changed, 47 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..d55dca3eacf8 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -4318,6 +4318,18 @@ 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) {
+ pr_err("Can't allocate sva domain\n");
+ 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..b9f4dd7057d1 100644
--- a/drivers/iommu/intel/svm.c
+++ b/drivers/iommu/intel/svm.c
@@ -932,3 +932,37 @@ 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 = domain->sva_cookie;
+ struct intel_iommu *iommu = info->iommu;
+ struct iommu_sva *sva;
+
+ mutex_lock(&pasid_mutex);
+ sva = intel_svm_bind_mm(iommu, dev, mm);
+ mutex_unlock(&pasid_mutex);
+
+ return IS_ERR_OR_NULL(sva);
+}
+
+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:[~2022-03-20 6:42 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-20 6:40 [PATCH RFC 00/11] iommu: SVA and IOPF refactoring Lu Baolu
2022-03-20 6:40 ` [PATCH RFC 01/11] iommu: Add pasid_bits field in struct dev_iommu Lu Baolu
2022-03-21 7:01 ` Tian, Kevin
2022-03-21 10:22 ` Lu Baolu
2022-03-22 0:26 ` Tian, Kevin
2022-03-22 0:48 ` Lu Baolu
2022-03-21 11:22 ` Jean-Philippe Brucker
2022-03-22 0:45 ` Lu Baolu
2022-03-20 6:40 ` [PATCH RFC 02/11] iommu: Add iommu_domain type for SVA Lu Baolu
2022-03-21 7:06 ` Tian, Kevin
2022-03-21 10:23 ` Lu Baolu
2022-03-21 11:47 ` Jason Gunthorpe via iommu
2022-03-22 0:54 ` Lu Baolu
2022-03-20 6:40 ` [PATCH RFC 03/11] iommu: Add attach/detach_dev_pasid domain ops Lu Baolu
2022-03-21 7:13 ` Tian, Kevin
2022-03-21 10:27 ` Lu Baolu
2022-03-21 11:53 ` Jason Gunthorpe via iommu
2022-03-20 6:40 ` Lu Baolu [this message]
2022-03-21 7:45 ` [PATCH RFC 04/11] iommu/vt-d: Add SVA domain support Tian, Kevin
2022-03-21 10:37 ` Lu Baolu
2022-03-21 11:56 ` Jason Gunthorpe via iommu
2022-03-22 4:25 ` Lu Baolu
2022-03-20 6:40 ` [PATCH RFC 05/11] arm-smmu-v3/sva: " Lu Baolu
2022-03-21 11:31 ` Jean-Philippe Brucker
2022-03-21 11:58 ` Jason Gunthorpe via iommu
2022-03-20 6:40 ` [PATCH RFC 06/11] iommu/sva: Use attach/detach_pasid_dev in SVA interfaces Lu Baolu
2022-03-21 8:04 ` Tian, Kevin
2022-03-21 11:01 ` Lu Baolu
2022-03-21 12:03 ` Jason Gunthorpe via iommu
2022-03-21 11:33 ` Jean-Philippe Brucker
2022-03-22 4:29 ` Lu Baolu
2022-03-21 12:05 ` Jason Gunthorpe via iommu
2022-03-22 4:31 ` Lu Baolu
2022-03-20 6:40 ` [PATCH RFC 07/11] iommu: Remove SVA related callbacks from iommu ops Lu Baolu
2022-03-20 6:40 ` [PATCH RFC 08/11] iommu: Handle IO page faults directly Lu Baolu
2022-03-21 11:35 ` Jean-Philippe Brucker
2022-03-22 0:39 ` Tian, Kevin
2022-03-20 6:40 ` [PATCH RFC 09/11] iommu: Add iommu_get_domain_for_dev_pasid() Lu Baolu
2022-03-21 12:40 ` Jason Gunthorpe via iommu
2022-03-22 4:50 ` Lu Baolu
2022-03-20 6:40 ` [PATCH RFC 10/11] iommu: Make IOPF handling framework generic Lu Baolu
2022-03-21 8:09 ` Tian, Kevin
2022-03-21 11:42 ` Jean-Philippe Brucker
2022-03-21 12:43 ` Jason Gunthorpe via iommu
2022-03-22 5:03 ` Lu Baolu
2022-03-22 10:02 ` Jean-Philippe Brucker
2022-03-22 12:15 ` Jason Gunthorpe via iommu
2022-03-22 1:00 ` Tian, Kevin
2022-03-22 10:06 ` Jean-Philippe Brucker
2022-03-22 10:24 ` Tian, Kevin
2022-03-22 10:50 ` Jean-Philippe Brucker
2022-03-21 11:39 ` Jean-Philippe Brucker
2022-03-22 5:28 ` Lu Baolu
2022-03-21 12:50 ` Jason Gunthorpe via iommu
2022-03-22 5:48 ` Lu Baolu
2022-03-20 6:40 ` [PATCH RFC 11/11] iommu: Rename iommu-sva-lib.{c,h} Lu Baolu
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