diff options
Diffstat (limited to 'include/linux/iommu.h')
| -rw-r--r-- | include/linux/iommu.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index f3b99e1c1042..ba3b8a98a049 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -58,8 +58,10 @@ struct iommu_domain { #define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */ enum iommu_attr { - DOMAIN_ATTR_MAX, DOMAIN_ATTR_GEOMETRY, + DOMAIN_ATTR_PAGING, + DOMAIN_ATTR_WINDOWS, + DOMAIN_ATTR_MAX, }; #ifdef CONFIG_IOMMU_API @@ -100,6 +102,16 @@ struct iommu_ops { enum iommu_attr attr, void *data); int (*domain_set_attr)(struct iommu_domain *domain, enum iommu_attr attr, void *data); + + /* Window handling functions */ + int (*domain_window_enable)(struct iommu_domain *domain, u32 wnd_nr, + phys_addr_t paddr, u64 size); + void (*domain_window_disable)(struct iommu_domain *domain, u32 wnd_nr); + /* Set the numer of window per domain */ + int (*domain_set_windows)(struct iommu_domain *domain, u32 w_count); + /* Get the numer of window per domain */ + u32 (*domain_get_windows)(struct iommu_domain *domain); + unsigned long pgsize_bitmap; }; @@ -157,6 +169,10 @@ extern int iommu_domain_get_attr(struct iommu_domain *domain, enum iommu_attr, extern int iommu_domain_set_attr(struct iommu_domain *domain, enum iommu_attr, void *data); +/* Window handling function prototypes */ +extern int iommu_domain_window_enable(struct iommu_domain *domain, u32 wnd_nr, + phys_addr_t offset, u64 size); +extern void iommu_domain_window_disable(struct iommu_domain *domain, u32 wnd_nr); /** * report_iommu_fault() - report about an IOMMU fault to the IOMMU framework * @domain: the iommu domain where the fault has happened @@ -239,6 +255,18 @@ static inline int iommu_unmap(struct iommu_domain *domain, unsigned long iova, return -ENODEV; } +static inline int iommu_domain_window_enable(struct iommu_domain *domain, + u32 wnd_nr, phys_addr_t paddr, + u64 size) +{ + return -ENODEV; +} + +static inline void iommu_domain_window_disable(struct iommu_domain *domain, + u32 wnd_nr) +{ +} + static inline phys_addr_t iommu_iova_to_phys(struct iommu_domain *domain, unsigned long iova) { |