diff options
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index a71df92be992..54d6d690073c 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -38,16 +38,28 @@ struct iommu_domain; typedef int (*iommu_fault_handler_t)(struct iommu_domain *, struct device *, unsigned long, int, void *); +struct iommu_domain_geometry { + dma_addr_t aperture_start; /* First address that can be mapped */ + dma_addr_t aperture_end; /* Last address that can be mapped */ + bool force_aperture; /* DMA only allowed in mappable range? */ +}; + struct iommu_domain { struct iommu_ops *ops; void *priv; iommu_fault_handler_t handler; void *handler_token; + struct iommu_domain_geometry geometry; }; #define IOMMU_CAP_CACHE_COHERENCY 0x1 #define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */ +enum iommu_attr { + DOMAIN_ATTR_MAX, + DOMAIN_ATTR_GEOMETRY, +}; + #ifdef CONFIG_IOMMU_API /** @@ -60,9 +72,10 @@ struct iommu_domain { * @unmap: unmap a physically contiguous memory region from an iommu domain * @iova_to_phys: translate iova to physical address * @domain_has_cap: domain capabilities query - * @commit: commit iommu domain * @add_device: add device to iommu grouping * @remove_device: remove device from iommu grouping + * @domain_get_attr: Query domain attributes + * @domain_set_attr: Change domain attributes * @pgsize_bitmap: bitmap of supported page sizes */ struct iommu_ops { @@ -80,6 +93,11 @@ struct iommu_ops { unsigned long cap); int (*add_device)(struct device *dev); void (*remove_device)(struct device *dev); + int (*device_group)(struct device *dev, unsigned int *groupid); + int (*domain_get_attr)(struct iommu_domain *domain, + enum iommu_attr attr, void *data); + int (*domain_set_attr)(struct iommu_domain *domain, + enum iommu_attr attr, void *data); unsigned long pgsize_bitmap; }; @@ -132,6 +150,11 @@ extern int iommu_group_unregister_notifier(struct iommu_group *group, struct notifier_block *nb); extern int iommu_group_id(struct iommu_group *group); +extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr, + void *data); +extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, + void *data); + /** * report_iommu_fault() - report about an IOMMU fault to the IOMMU framework * @domain: the iommu domain where the fault has happened @@ -300,6 +323,19 @@ int iommu_group_id(struct iommu_group *group) { return -ENODEV; } + +static inline int iommu_domain_get_attr(struct iommu_domain *domain, + enum iommu_attr attr, void *data) +{ + return -EINVAL; +} + +static inline int iommu_domain_set_attr(struct iommu_domain *domain, + enum iommu_attr attr, void *data) +{ + return -EINVAL; +} + #endif /* CONFIG_IOMMU_API */ #endif /* __LINUX_IOMMU_H */ |