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Diffstat (limited to 'include/linux/swiotlb.h')
-rw-r--r--include/linux/swiotlb.h14
1 files changed, 11 insertions, 3 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 7c007ed7505f..361f62bb4a8e 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -60,9 +60,6 @@ extern void swiotlb_tbl_sync_single(struct device *hwdev,
size_t size, enum dma_data_direction dir,
enum dma_sync_target target);
-extern int
-swiotlb_dma_supported(struct device *hwdev, u64 mask);
-
#ifdef CONFIG_SWIOTLB
extern enum swiotlb_force swiotlb_force;
extern phys_addr_t io_tlb_start, io_tlb_end;
@@ -76,6 +73,8 @@ bool swiotlb_map(struct device *dev, phys_addr_t *phys, dma_addr_t *dma_addr,
size_t size, enum dma_data_direction dir, unsigned long attrs);
void __init swiotlb_exit(void);
unsigned int swiotlb_max_segment(void);
+size_t swiotlb_max_mapping_size(struct device *dev);
+bool is_swiotlb_active(void);
#else
#define swiotlb_force SWIOTLB_NO_FORCE
static inline bool is_swiotlb_buffer(phys_addr_t paddr)
@@ -95,6 +94,15 @@ static inline unsigned int swiotlb_max_segment(void)
{
return 0;
}
+static inline size_t swiotlb_max_mapping_size(struct device *dev)
+{
+ return SIZE_MAX;
+}
+
+static inline bool is_swiotlb_active(void)
+{
+ return false;
+}
#endif /* CONFIG_SWIOTLB */
extern void swiotlb_print_info(void);