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Commit f251e187 authored by Joerg Roedel's avatar Joerg Roedel
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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: default avatarJoerg Roedel <jroedel@suse.de>
parent 50917e26

drivers/iommu/amd_iommu.c

+6 −0
Original line number Diff line number Diff line
@@ -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);