diff options
Diffstat (limited to 'arch/powerpc/include/asm/device.h')
| -rw-r--r-- | arch/powerpc/include/asm/device.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/device.h b/arch/powerpc/include/asm/device.h index 9dade15d1ab4..6d94d27ed850 100644 --- a/arch/powerpc/include/asm/device.h +++ b/arch/powerpc/include/asm/device.h @@ -15,7 +15,16 @@ struct dev_archdata { /* DMA operations on that device */ struct dma_map_ops *dma_ops; - void *dma_data; + + /* + * When an iommu is in use, dma_data is used as a ptr to the base of the + * iommu_table. Otherwise, it is a simple numerical offset. + */ + union { + dma_addr_t dma_offset; + void *iommu_table_base; + } dma_data; + #ifdef CONFIG_SWIOTLB dma_addr_t max_direct_dma_addr; #endif |