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author | Joerg Roedel <jroedel@suse.de> | 2014-09-03 16:47:25 (GMT) |
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committer | Joerg Roedel <jroedel@suse.de> | 2014-09-25 13:44:49 (GMT) |
commit | 3c0e0ca0a4e757159d868c4870556515d66b6c97 (patch) | |
tree | 2edcb98cf5ab39daa4423054870030c81dd399ec /drivers/iommu | |
parent | 1aed074869a9cbe0a846ea7b254d8fd9a4a4d31f (diff) | |
download | linux-3c0e0ca0a4e757159d868c4870556515d66b6c97.tar.xz |
iommu: Introduce iommu_capable API function
This function will replace the current iommu_domain_has_cap
function and clean up the interface while at it.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r-- | drivers/iommu/iommu.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index bc45478..aeb243f 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -817,6 +817,15 @@ bool iommu_present(struct bus_type *bus) } EXPORT_SYMBOL_GPL(iommu_present); +bool iommu_capable(struct bus_type *bus, enum iommu_cap cap) +{ + if (!bus->iommu_ops || !bus->iommu_ops->capable) + return false; + + return bus->iommu_ops->capable(cap); +} +EXPORT_SYMBOL_GPL(iommu_capable); + /** * iommu_set_fault_handler() - set a fault handler for an iommu domain * @domain: iommu domain @@ -950,10 +959,13 @@ EXPORT_SYMBOL_GPL(iommu_iova_to_phys); int iommu_domain_has_cap(struct iommu_domain *domain, enum iommu_cap cap) { - if (unlikely(domain->ops->domain_has_cap == NULL)) - return 0; + if (domain->ops->domain_has_cap != NULL) + return domain->ops->domain_has_cap(domain, cap); + + if (domain->ops->capable != NULL) + return domain->ops->capable(cap); - return domain->ops->domain_has_cap(domain, cap); + return 0; } EXPORT_SYMBOL_GPL(iommu_domain_has_cap); |