Commit b4ef725e authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu: Introduce wrappers around dev->iommu_fwspec 



These wrappers will be used to easily change the location of
the field later when all users are converted.

Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent c4b17afb

drivers/iommu/iommu.c

+7 −7
Original line number Diff line number Diff line
@@ -1976,7 +1976,7 @@ const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode) 
int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode,

		      const struct iommu_ops *ops)

{

	struct iommu_fwspec *fwspec = dev->iommu_fwspec;

	struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);



	if (fwspec)

		return ops == fwspec->ops ? 0 : -EINVAL;
@@ -1988,26 +1988,26 @@ int iommu_fwspec_init(struct device *dev, struct fwnode_handle *iommu_fwnode, 
	of_node_get(to_of_node(iommu_fwnode));

	fwspec->iommu_fwnode = iommu_fwnode;

	fwspec->ops = ops;

	dev->iommu_fwspec = fwspec;

	dev_iommu_fwspec_set(dev, fwspec);

	return 0;

}

EXPORT_SYMBOL_GPL(iommu_fwspec_init);



void iommu_fwspec_free(struct device *dev)

{

	struct iommu_fwspec *fwspec = dev->iommu_fwspec;

	struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);



	if (fwspec) {

		fwnode_handle_put(fwspec->iommu_fwnode);

		kfree(fwspec);

		dev->iommu_fwspec = NULL;

		dev_iommu_fwspec_set(dev, NULL);

	}

}

EXPORT_SYMBOL_GPL(iommu_fwspec_free);



int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids)

{

	struct iommu_fwspec *fwspec = dev->iommu_fwspec;

	struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);

	size_t size;

	int i;
@@ -2016,11 +2016,11 @@ int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids) 


	size = offsetof(struct iommu_fwspec, ids[fwspec->num_ids + num_ids]);

	if (size > sizeof(*fwspec)) {

		fwspec = krealloc(dev->iommu_fwspec, size, GFP_KERNEL);

		fwspec = krealloc(fwspec, size, GFP_KERNEL);

		if (!fwspec)

			return -ENOMEM;



		dev->iommu_fwspec = fwspec;

		dev_iommu_fwspec_set(dev, fwspec);

	}



	for (i = 0; i < num_ids; i++)

include/linux/iommu.h

+11 −0
Original line number Diff line number Diff line
@@ -398,6 +398,17 @@ void iommu_fwspec_free(struct device *dev); 
int iommu_fwspec_add_ids(struct device *dev, u32 *ids, int num_ids);

const struct iommu_ops *iommu_ops_from_fwnode(struct fwnode_handle *fwnode);



static inline struct iommu_fwspec *dev_iommu_fwspec_get(struct device *dev)

{

	return dev->iommu_fwspec;

}



static inline void dev_iommu_fwspec_set(struct device *dev,

					struct iommu_fwspec *fwspec)

{

	dev->iommu_fwspec = fwspec;

}



#else /* CONFIG_IOMMU_API */



struct iommu_ops {};