diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/dm/device.h | 4 | ||||
| -rw-r--r-- | include/iommu.h | 24 |
2 files changed, 28 insertions, 0 deletions
diff --git a/include/dm/device.h b/include/dm/device.h index f3f953c9afc..e9460386ca9 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -165,6 +165,7 @@ enum { * automatically when the device is removed / unbound * @dma_offset: Offset between the physical address space (CPU's) and the * device's bus address space + * @iommu: IOMMU device associated with this device */ struct udevice { const struct driver *driver; @@ -194,6 +195,9 @@ struct udevice { #if CONFIG_IS_ENABLED(DM_DMA) ulong dma_offset; #endif +#if CONFIG_IS_ENABLED(IOMMU) + struct udevice *iommu; +#endif }; static inline int dm_udevice_size(void) diff --git a/include/iommu.h b/include/iommu.h index 6c46adf449e..cf9719c5e91 100644 --- a/include/iommu.h +++ b/include/iommu.h @@ -3,6 +3,27 @@ struct udevice; +struct iommu_ops { + /** + * map() - map DMA memory + * + * @dev: device for which to map DMA memory + * @addr: CPU address of the memory + * @size: size of the memory + * @return DMA address for the device + */ + dma_addr_t (*map)(struct udevice *dev, void *addr, size_t size); + + /** + * unmap() - unmap DMA memory + * + * @dev: device for which to unmap DMA memory + * @addr: DMA address of the memory + * @size: size of the memory + */ + void (*unmap)(struct udevice *dev, dma_addr_t addr, size_t size); +}; + #if (CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)) && \ CONFIG_IS_ENABLED(IOMMU) int dev_iommu_enable(struct udevice *dev); @@ -13,4 +34,7 @@ static inline int dev_iommu_enable(struct udevice *dev) } #endif +dma_addr_t dev_iommu_dma_map(struct udevice *dev, void *addr, size_t size); +void dev_iommu_dma_unmap(struct udevice *dev, dma_addr_t addr, size_t size); + #endif |