[RFC/PATCH 3/4] iommu: Export core IOMMU functions to kernel modules

Isaac J. Manjarres
2019-05-17T18:48:30Z

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

Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>
---
drivers/iommu/iommu-sysfs.c | 3 +++
drivers/iommu/iommu.c | 6 ++++++
2 files changed, 9 insertions(+)

diff --git a/drivers/iommu/iommu-sysfs.c b/drivers/iommu/iommu-sysfs.c
index 44127d5..b3dadb8 100644
--- a/drivers/iommu/iommu-sysfs.c
+++ b/drivers/iommu/iommu-sysfs.c
@@ -90,6 +90,7 @@ 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)
{
@@ -122,6 +123,7 @@ 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)
{
@@ -131,3 +133,4 @@ 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);
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 109de67..2b92f35 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -103,6 +103,7 @@ int iommu_device_register(struct iommu_device *iommu)

return 0;
}
+EXPORT_SYMBOL_GPL(iommu_device_register);

void iommu_device_unregister(struct iommu_device *iommu)
{
@@ -813,6 +814,7 @@ 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
@@ -986,6 +988,7 @@ 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
@@ -1053,6 +1056,7 @@ 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)
@@ -1133,6 +1137,7 @@ 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)
{
@@ -1913,6 +1918,7 @@ struct iommu_resv_region *iommu_alloc_resv_region(phys_addr_t start,
region->type = type;
return region;
}
+EXPORT_SYMBOL_GPL(iommu_alloc_resv_region);

/* Request that a device is direct mapped by the IOMMU */
int iommu_request_dm_for_dev(struct device *dev)