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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: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2014-08-05 16:48:10 +02:00
parent 50917e265e
commit f251e187f2
1 changed files with 6 additions and 0 deletions
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6
drivers/iommu/amd_iommu.c
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@ -93,6 +93,7 @@ static struct dma_map_ops amd_iommu_dma_ops;
struct iommu_dev_data { struct iommu_dev_data {
struct list_head list; /* For domain->dev_list */ struct list_head list; /* For domain->dev_list */
struct list_head dev_data_list; /* For global dev_data_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 iommu_dev_data *alias_data;/* The alias dev_data */
struct protection_domain *domain; /* Domain the device is bound to */ struct protection_domain *domain; /* Domain the device is bound to */
atomic_t bind; /* Domain attach reference count */ atomic_t bind; /* Domain attach reference count */
@ -135,6 +136,8 @@ static struct iommu_dev_data *alloc_dev_data(u16 devid)
if (!dev_data) if (!dev_data)
return NULL; return NULL;
INIT_LIST_HEAD(&dev_data->alias_list);
dev_data->devid = devid; dev_data->devid = devid;
atomic_set(&dev_data->bind, 0); atomic_set(&dev_data->bind, 0);
@ -383,6 +386,9 @@ static int iommu_init_device(struct device *dev)
return -ENOTSUPP; return -ENOTSUPP;
} }
dev_data->alias_data = alias_data; 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); ret = init_iommu_group(dev);