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Commit 82047fdd authored by Isaac J. Manjarres's avatar Isaac J. Manjarres
Browse files

FROMLIST: iommu: Export core IOMMU functions to kernel modules 



IOMMU drivers that can be compiled as modules need to use
some of the IOMMU core functions, so expose them.

Change-Id: I84004fdcd7eee3f56d08db76c3b0421990179810
Signed-off-by: default avatarIsaac J. Manjarres <isaacm@codeaurora.org>
Bug: 140290589
Link: https://patchwork.kernel.org/patch/10948413/
parent c32fef39

drivers/iommu/iommu-sysfs.c

+3 −0
Original line number Diff line number Diff line
@@ -87,6 +87,7 @@ int iommu_device_sysfs_add(struct iommu_device *iommu, 
	put_device(iommu->dev);

	return ret;

}

EXPORT_SYMBOL_GPL(iommu_device_sysfs_add);



void iommu_device_sysfs_remove(struct iommu_device *iommu)

{
@@ -119,6 +120,7 @@ int iommu_device_link(struct iommu_device *iommu, struct device *link) 


	return ret;

}

EXPORT_SYMBOL_GPL(iommu_device_link);



void iommu_device_unlink(struct iommu_device *iommu, struct device *link)

{
@@ -128,3 +130,4 @@ void iommu_device_unlink(struct iommu_device *iommu, struct device *link) 
	sysfs_remove_link(&link->kobj, "iommu");

	sysfs_remove_link_from_group(&iommu->dev->kobj, "devices", dev_name(link));

}

EXPORT_SYMBOL_GPL(iommu_device_unlink);

drivers/iommu/iommu.c

+6 −0
Original line number Diff line number Diff line
@@ -141,6 +141,7 @@ int iommu_device_register(struct iommu_device *iommu) 
	spin_unlock(&iommu_device_lock);

	return 0;

}

EXPORT_SYMBOL_GPL(iommu_device_register);



void iommu_device_unregister(struct iommu_device *iommu)

{
@@ -886,6 +887,7 @@ struct iommu_group *iommu_group_ref_get(struct iommu_group *group) 
	kobject_get(group->devices_kobj);

	return group;

}

EXPORT_SYMBOL_GPL(iommu_group_ref_get);



/**

 * iommu_group_put - Decrement group reference
@@ -1259,6 +1261,7 @@ struct iommu_group *generic_device_group(struct device *dev) 
{

	return iommu_group_alloc();

}

EXPORT_SYMBOL_GPL(generic_device_group);



/*

 * Use standard PCI bus topology, isolation features, and DMA alias quirks
@@ -1326,6 +1329,7 @@ struct iommu_group *pci_device_group(struct device *dev) 
	/* No shared group found, allocate new */

	return iommu_group_alloc();

}

EXPORT_SYMBOL_GPL(pci_device_group);



/* Get the IOMMU group for device on fsl-mc bus */

struct iommu_group *fsl_mc_device_group(struct device *dev)
@@ -1406,6 +1410,7 @@ struct iommu_group *iommu_group_get_for_dev(struct device *dev) 


	return group;

}

EXPORT_SYMBOL_GPL(iommu_group_get_for_dev);



struct iommu_domain *iommu_group_default_domain(struct iommu_group *group)

{
@@ -2185,6 +2190,7 @@ struct iommu_resv_region *iommu_alloc_resv_region(phys_addr_t start, 
	region->type = type;

	return region;

}

EXPORT_SYMBOL_GPL(iommu_alloc_resv_region);



static int

request_default_domain_for_dev(struct device *dev, unsigned long type)