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authorJoerg Roedel <jroedel@suse.de>2014-08-05 18:48:10 +0400
committerJoerg Roedel <jroedel@suse.de>2014-08-26 13:37:42 +0400
commitf251e187f2949c690fc13a91df7b873a6b5be671 (patch)
tree66f9b0e5f7cb1633791cef7426bc505c6e50d1a2 /drivers/iommu
parent50917e265ebd2ea33bc34b22b3981f1e88415eae (diff)
downloadlinux-f251e187f2949c690fc13a91df7b873a6b5be671.tar.xz
iommu/amd: Keep a list of devices in an alias group
Some broken devices might use any request-id from the alias group, so we need to set a DTE entry for every device in there. This patch adds creation of those lists. Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index fe6d7cc715f7..8a152564a098 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -93,6 +93,7 @@ static struct dma_map_ops amd_iommu_dma_ops;
struct iommu_dev_data {
struct list_head list; /* For domain->dev_list */
struct list_head dev_data_list; /* For global dev_data_list */
+ struct list_head alias_list; /* Link alias-groups together */
struct iommu_dev_data *alias_data;/* The alias dev_data */
struct protection_domain *domain; /* Domain the device is bound to */
atomic_t bind; /* Domain attach reference count */
@@ -135,6 +136,8 @@ static struct iommu_dev_data *alloc_dev_data(u16 devid)
if (!dev_data)
return NULL;
+ INIT_LIST_HEAD(&dev_data->alias_list);
+
dev_data->devid = devid;
atomic_set(&dev_data->bind, 0);
@@ -383,6 +386,9 @@ static int iommu_init_device(struct device *dev)
return -ENOTSUPP;
}
dev_data->alias_data = alias_data;
+
+ /* Add device to the alias_list */
+ list_add(&dev_data->alias_list, &alias_data->alias_list);
}
ret = init_iommu_group(dev);