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From: Lu Baolu <baolu.lu@linux.intel.com>
To: Joerg Roedel <joro@8bytes.org>,
	Alex Williamson <alex.williamson@redhat.com>
Cc: Jean-Philippe Brucker <jean-philippe@linaro.org>,
	Kevin Tian <kevin.tian@intel.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Ashok Raj <ashok.raj@intel.com>,
	kvm@vger.kernel.org, Cornelia Huck <cohuck@redhat.com>,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	Robin Murphy <robin.murphy@arm.com>
Subject: [PATCH v3 4/4] vfio/type1: Use iommu_aux_at(de)tach_group() APIs
Date: Tue, 14 Jul 2020 13:57:03 +0800
Message-ID: <20200714055703.5510-5-baolu.lu@linux.intel.com> (raw)
In-Reply-To: <20200714055703.5510-1-baolu.lu@linux.intel.com>

Replace iommu_aux_at(de)tach_device() with iommu_aux_at(de)tach_group().
It also saves the IOMMU_DEV_FEAT_AUX-capable physcail device in the
vfio_group data structure so that it could be reused in other places.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
---
 drivers/vfio/vfio_iommu_type1.c | 44 ++++++---------------------------
 1 file changed, 7 insertions(+), 37 deletions(-)

diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c
index 5e556ac9102a..f8812e68de77 100644
--- a/drivers/vfio/vfio_iommu_type1.c
+++ b/drivers/vfio/vfio_iommu_type1.c
@@ -100,6 +100,7 @@ struct vfio_dma {
 struct vfio_group {
 	struct iommu_group	*iommu_group;
 	struct list_head	next;
+	struct device		*iommu_device;
 	bool			mdev_group;	/* An mdev group */
 	bool			pinned_page_dirty_scope;
 };
@@ -1627,45 +1628,13 @@ static struct device *vfio_mdev_get_iommu_device(struct device *dev)
 	return NULL;
 }
 
-static int vfio_mdev_attach_domain(struct device *dev, void *data)
-{
-	struct iommu_domain *domain = data;
-	struct device *iommu_device;
-
-	iommu_device = vfio_mdev_get_iommu_device(dev);
-	if (iommu_device) {
-		if (iommu_dev_feature_enabled(iommu_device, IOMMU_DEV_FEAT_AUX))
-			return iommu_aux_attach_device(domain, iommu_device);
-		else
-			return iommu_attach_device(domain, iommu_device);
-	}
-
-	return -EINVAL;
-}
-
-static int vfio_mdev_detach_domain(struct device *dev, void *data)
-{
-	struct iommu_domain *domain = data;
-	struct device *iommu_device;
-
-	iommu_device = vfio_mdev_get_iommu_device(dev);
-	if (iommu_device) {
-		if (iommu_dev_feature_enabled(iommu_device, IOMMU_DEV_FEAT_AUX))
-			iommu_aux_detach_device(domain, iommu_device);
-		else
-			iommu_detach_device(domain, iommu_device);
-	}
-
-	return 0;
-}
-
 static int vfio_iommu_attach_group(struct vfio_domain *domain,
 				   struct vfio_group *group)
 {
 	if (group->mdev_group)
-		return iommu_group_for_each_dev(group->iommu_group,
-						domain->domain,
-						vfio_mdev_attach_domain);
+		return iommu_aux_attach_group(domain->domain,
+					      group->iommu_group,
+					      group->iommu_device);
 	else
 		return iommu_attach_group(domain->domain, group->iommu_group);
 }
@@ -1674,8 +1643,8 @@ static void vfio_iommu_detach_group(struct vfio_domain *domain,
 				    struct vfio_group *group)
 {
 	if (group->mdev_group)
-		iommu_group_for_each_dev(group->iommu_group, domain->domain,
-					 vfio_mdev_detach_domain);
+		iommu_aux_detach_group(domain->domain, group->iommu_group,
+				       group->iommu_device);
 	else
 		iommu_detach_group(domain->domain, group->iommu_group);
 }
@@ -2007,6 +1976,7 @@ static int vfio_iommu_type1_attach_group(void *iommu_data,
 			return 0;
 		}
 
+		group->iommu_device = iommu_device;
 		bus = iommu_device->bus;
 	}
 
-- 
2.17.1

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  parent reply index

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-14  5:56 [PATCH v3 0/4] iommu aux-domain APIs extensions Lu Baolu
2020-07-14  5:57 ` [PATCH v3 1/4] iommu: Check IOMMU_DEV_FEAT_AUX feature in aux api's Lu Baolu
2020-07-29 20:03   ` Alex Williamson
2020-07-30  1:46     ` Lu Baolu
2020-07-14  5:57 ` [PATCH v3 2/4] iommu: Add iommu_aux_at(de)tach_group() Lu Baolu
2020-07-14 16:39   ` Jacob Pan
2020-07-15  0:47     ` Lu Baolu
2020-07-15 16:01       ` Jacob Pan
2020-07-16  1:07         ` Lu Baolu
2020-07-29 20:03           ` Alex Williamson
2020-07-29 23:34             ` Tian, Kevin
2020-07-30 19:46               ` Alex Williamson
2020-07-31  5:47                 ` Lu Baolu
2020-07-31 18:05                   ` Alex Williamson
2020-08-03  1:57                     ` Lu Baolu
2020-07-14  5:57 ` [PATCH v3 3/4] iommu: Add iommu_aux_get_domain_for_dev() Lu Baolu
2020-07-29 20:25   ` Alex Williamson
2020-07-29 23:49     ` Tian, Kevin
2020-07-30 20:17       ` Alex Williamson
2020-07-31  0:26         ` Tian, Kevin
2020-07-31  2:17         ` Tian, Kevin
2020-07-31  6:30     ` Lu Baolu
2020-07-31 18:14       ` Alex Williamson
2020-08-03  2:15         ` Lu Baolu
2020-07-14  5:57 ` Lu Baolu [this message]
2020-07-14  8:25   ` [PATCH v3 4/4] vfio/type1: Use iommu_aux_at(de)tach_group() APIs Christoph Hellwig
2020-07-14 16:29     ` Jacob Pan
2020-07-15  1:00       ` Lu Baolu
2020-07-15  1:23         ` Tian, Kevin
2020-07-29 20:32   ` Alex Williamson
2020-07-30  2:41     ` Lu Baolu
2020-07-30 21:17       ` Alex Williamson
2020-07-31  1:37         ` Lu Baolu
2020-07-30  9:36   ` Liu, Yi L
2020-07-31  1:39     ` Lu Baolu
2020-07-23 13:55 ` [PATCH v3 0/4] iommu aux-domain APIs extensions Lu Baolu

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