diff options
Diffstat (limited to 'include/linux/swiotlb.h')
| -rw-r--r-- | include/linux/swiotlb.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 183f37c8a5e1..4ee479f2f355 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -9,7 +9,13 @@ struct device; struct page; struct scatterlist; -extern int swiotlb_force; +enum swiotlb_force { + SWIOTLB_NORMAL, /* Default - depending on HW DMA mask etc. */ + SWIOTLB_FORCE, /* swiotlb=force */ + SWIOTLB_NO_FORCE, /* swiotlb=noforce */ +}; + +extern enum swiotlb_force swiotlb_force; /* * Maximum allowable number of contiguous slabs to map, @@ -108,11 +114,14 @@ swiotlb_dma_supported(struct device *hwdev, u64 mask); #ifdef CONFIG_SWIOTLB extern void __init swiotlb_free(void); +unsigned int swiotlb_max_segment(void); #else static inline void swiotlb_free(void) { } +static inline unsigned int swiotlb_max_segment(void) { return 0; } #endif extern void swiotlb_print_info(void); extern int is_swiotlb_buffer(phys_addr_t paddr); +extern void swiotlb_set_max_segment(unsigned int); #endif /* __LINUX_SWIOTLB_H */ |