From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: LKML <linux-kernel@vger.kernel.org>,
iommu@lists.linux.dev, Jason Gunthorpe <jgg@nvidia.com>,
"Lu Baolu" <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
dmaengine@vger.kernel.org, vkoul@kernel.org
Cc: "Robin Murphy" <robin.murphy@arm.com>,
"Will Deacon" <will@kernel.org>,
David Woodhouse <dwmw2@infradead.org>,
Raj Ashok <ashok.raj@intel.com>,
"Tian, Kevin" <kevin.tian@intel.com>, Yi Liu <yi.l.liu@intel.com>,
"Yu, Fenghua" <fenghua.yu@intel.com>,
Dave Jiang <dave.jiang@intel.com>,
Tony Luck <tony.luck@intel.com>,
"Zanussi, Tom" <tom.zanussi@intel.com>,
Jacob Pan <jacob.jun.pan@linux.intel.com>
Subject: [PATCH v2 6/8] iommu/vt-d: Implement set_dev_pasid domain op
Date: Mon, 27 Mar 2023 16:21:36 -0700 [thread overview]
Message-ID: <20230327232138.1490712-7-jacob.jun.pan@linux.intel.com> (raw)
In-Reply-To: <20230327232138.1490712-1-jacob.jun.pan@linux.intel.com>
Devices that use ENQCMDS to submit work on buffers mapped by DMA API
must attach a PASID to the default domain of the device. In preparation
for this use case, this patch implements set_dev_pasid() for the
default_domain_ops. Besides PASID attachment, device will also be
attached to the domain as the result of this call if the device has not
been attached before.
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
---
drivers/iommu/intel/iommu.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 0a195136bac7..652ee0ca72da 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -4782,6 +4782,26 @@ static void intel_iommu_remove_dev_pasid(struct device *dev, ioasid_t pasid)
intel_iommu_detach_device_pasid(domain, dev, pasid);
}
+static int intel_iommu_attach_device_pasid(struct iommu_domain *domain,
+ struct device *dev, ioasid_t pasid)
+{
+ struct device_domain_info *info = dev_iommu_priv_get(dev);
+ struct dmar_domain *dmar_domain = to_dmar_domain(domain);
+ struct intel_iommu *iommu = info->iommu;
+ int ret;
+
+ if (!pasid_supported(iommu))
+ return -ENODEV;
+
+ ret = prepare_domain_attach_device(domain, dev);
+ if (ret)
+ return ret;
+
+ return dmar_domain_attach_device_pasid(dmar_domain, dev, pasid);
+}
+
+
+
const struct iommu_ops intel_iommu_ops = {
.capable = intel_iommu_capable,
.domain_alloc = intel_iommu_domain_alloc,
@@ -4801,6 +4821,7 @@ const struct iommu_ops intel_iommu_ops = {
#endif
.default_domain_ops = &(const struct iommu_domain_ops) {
.attach_dev = intel_iommu_attach_device,
+ .set_dev_pasid = intel_iommu_attach_device_pasid,
.map_pages = intel_iommu_map_pages,
.unmap_pages = intel_iommu_unmap_pages,
.iotlb_sync_map = intel_iommu_iotlb_sync_map,
--
2.25.1
next prev parent reply other threads:[~2023-03-27 23:17 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-27 23:21 [PATCH v2 0/8] Re-enable IDXD kernel workqueue under DMA API Jacob Pan
2023-03-27 23:21 ` [PATCH v2 1/8] iommu/vt-d: Use non-privileged mode for all PASIDs Jacob Pan
2023-03-28 4:55 ` Baolu Lu
2023-03-27 23:21 ` [PATCH v2 2/8] iommu/vt-d: Remove PASID supervisor request support Jacob Pan
2023-03-28 4:59 ` Baolu Lu
2023-03-27 23:21 ` [PATCH v2 3/8] iommu/sva: Support reservation of global SVA PASIDs Jacob Pan
2023-03-28 5:11 ` Baolu Lu
2023-03-28 15:21 ` Jacob Pan
2023-03-28 7:35 ` Tian, Kevin
2023-03-28 15:31 ` Jacob Pan
2023-03-28 15:55 ` Jason Gunthorpe
2023-03-28 16:32 ` Jacob Pan
2023-03-27 23:21 ` [PATCH v2 4/8] iommu/vt-d: Reserve RID_PASID from global SVA PASID space Jacob Pan
2023-03-28 5:20 ` Baolu Lu
2023-03-28 16:29 ` Jacob Pan
2023-03-28 20:52 ` Jacob Pan
2023-03-29 6:13 ` Baolu Lu
2023-03-29 8:20 ` Vasant Hegde
2023-03-27 23:21 ` [PATCH v2 5/8] iommu/vt-d: Make device pasid attachment explicit Jacob Pan
2023-03-28 5:49 ` Baolu Lu
2023-03-28 7:44 ` Tian, Kevin
2023-03-28 20:39 ` Jacob Pan
2023-03-29 6:18 ` Baolu Lu
2023-03-27 23:21 ` Jacob Pan [this message]
2023-03-28 7:47 ` [PATCH v2 6/8] iommu/vt-d: Implement set_dev_pasid domain op Tian, Kevin
2023-03-28 15:40 ` Jacob Pan
2023-03-29 3:04 ` Tian, Kevin
2023-03-29 6:22 ` Baolu Lu
2023-03-27 23:21 ` [PATCH v2 7/8] iommu: Export iommu_get_dma_domain Jacob Pan
2023-03-28 6:04 ` Baolu Lu
2023-03-28 7:52 ` Tian, Kevin
2023-03-28 15:48 ` Jacob Pan
2023-03-28 16:19 ` Jason Gunthorpe
2023-03-28 17:25 ` Jacob Pan
2023-03-28 15:48 ` Jacob Pan
2023-03-29 6:28 ` Baolu Lu
2023-03-27 23:21 ` [PATCH v2 8/8] dmaengine/idxd: Re-enable kernel workqueue under DMA API Jacob Pan
2023-03-28 18:16 ` Fenghua Yu
2023-03-28 20:23 ` Jacob Pan
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