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authorJoerg Roedel <jroedel@suse.de>2020-04-29 16:36:45 +0300
committerJoerg Roedel <jroedel@suse.de>2020-05-05 15:36:12 +0300
commita6a4c7e2c5b8b981d1c546a393ff21f2112468c3 (patch)
tree45234a90749cf3a5a380f95973a8aede87b5344e /include/linux/iommu.h
parent57bd2c24ba1673bd47828f6ac5eaaa6292a03582 (diff)
downloadlinux-a6a4c7e2c5b8b981d1c546a393ff21f2112468c3.tar.xz
iommu: Add probe_device() and release_device() call-backs
Add call-backs to 'struct iommu_ops' as an alternative to the add_device() and remove_device() call-backs, which will be removed when all drivers are converted. The new call-backs will not setup IOMMU groups and domains anymore, so also add a probe_finalize() call-back where the IOMMU driver can do per-device setup work which require the device to be set up with a group and a domain. Signed-off-by: Joerg Roedel <jroedel@suse.de> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20200429133712.31431-8-joro@8bytes.org Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/iommu.h')
-rw-r--r--include/linux/iommu.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 1f027b07e499..30170d191e5e 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -225,6 +225,10 @@ struct iommu_iotlb_gather {
* @iova_to_phys: translate iova to physical address
* @add_device: add device to iommu grouping
* @remove_device: remove device from iommu grouping
+ * @probe_device: Add device to iommu driver handling
+ * @release_device: Remove device from iommu driver handling
+ * @probe_finalize: Do final setup work after the device is added to an IOMMU
+ * group and attached to the groups domain
* @device_group: find iommu group for a particular device
* @domain_get_attr: Query domain attributes
* @domain_set_attr: Change domain attributes
@@ -275,6 +279,9 @@ struct iommu_ops {
phys_addr_t (*iova_to_phys)(struct iommu_domain *domain, dma_addr_t iova);
int (*add_device)(struct device *dev);
void (*remove_device)(struct device *dev);
+ struct iommu_device *(*probe_device)(struct device *dev);
+ void (*release_device)(struct device *dev);
+ void (*probe_finalize)(struct device *dev);
struct iommu_group *(*device_group)(struct device *dev);
int (*domain_get_attr)(struct iommu_domain *domain,
enum iommu_attr attr, void *data);
@@ -375,6 +382,7 @@ struct iommu_fault_param {
*
* @fault_param: IOMMU detected device fault reporting data
* @fwspec: IOMMU fwspec data
+ * @iommu_dev: IOMMU device this device is linked to
* @priv: IOMMU Driver private data
*
* TODO: migrate other per device data pointers under iommu_dev_data, e.g.
@@ -384,6 +392,7 @@ struct dev_iommu {
struct mutex lock;
struct iommu_fault_param *fault_param;
struct iommu_fwspec *fwspec;
+ struct iommu_device *iommu_dev;
void *priv;
};