Commit a7ba5c3d authored by Will Deacon's avatar Will Deacon Committed by Joerg Roedel
Browse files

drivers/iommu: Export core IOMMU API symbols to permit modular drivers 



Building IOMMU drivers as modules requires that the core IOMMU API
symbols are exported as GPL symbols.

Signed-off-by: default avatarWill Deacon <will@kernel.org>
Tested-by: John Garry <john.garry@huawei.com> # smmu v3
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent 46cf053e

drivers/iommu/iommu-sysfs.c

+5 −0
Original line number Diff line number Diff line
@@ -87,6 +87,7 @@ error: 
	put_device(iommu->dev);

	return ret;

}

EXPORT_SYMBOL_GPL(iommu_device_sysfs_add);



void iommu_device_sysfs_remove(struct iommu_device *iommu)

{
@@ -94,6 +95,8 @@ void iommu_device_sysfs_remove(struct iommu_device *iommu) 
	device_unregister(iommu->dev);

	iommu->dev = NULL;

}

EXPORT_SYMBOL_GPL(iommu_device_sysfs_remove);



/*

 * IOMMU drivers can indicate a device is managed by a given IOMMU using

 * this interface.  A link to the device will be created in the "devices"
@@ -119,6 +122,7 @@ 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 +132,4 @@ 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

+8 −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)

{
@@ -148,6 +149,7 @@ void iommu_device_unregister(struct iommu_device *iommu) 
	list_del(&iommu->list);

	spin_unlock(&iommu_device_lock);

}

EXPORT_SYMBOL_GPL(iommu_device_unregister);



static struct iommu_param *iommu_get_dev_param(struct device *dev)

{
@@ -886,6 +888,7 @@ 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 +1262,7 @@ 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 +1330,7 @@ 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)
@@ -1338,6 +1343,7 @@ struct iommu_group *fsl_mc_device_group(struct device *dev) 
		group = iommu_group_alloc();

	return group;

}

EXPORT_SYMBOL_GPL(fsl_mc_device_group);



/**

 * iommu_group_get_for_dev - Find or create the IOMMU group for a device
@@ -1406,6 +1412,7 @@ struct iommu_group *iommu_group_get_for_dev(struct device *dev) 


	return group;

}

EXPORT_SYMBOL(iommu_group_get_for_dev);



struct iommu_domain *iommu_group_default_domain(struct iommu_group *group)

{
@@ -2246,6 +2253,7 @@ 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)

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