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

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

Signed-off-by: Will Deacon <will@kernel.org>
Tested-by: John Garry <john.garry@huawei.com> # smmu v3
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Will Deacon 2019-12-19 12:03:37 +00:00 committed by Joerg Roedel
parent 46cf053efe
commit a7ba5c3d00
2 changed files with 13 additions and 0 deletions
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5
drivers/iommu/iommu-sysfs.c
View File

@ -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)
{
@ -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);

8
drivers/iommu/iommu.c
View File

@ -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)