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authorLinus Torvalds <torvalds@linux-foundation.org>2020-02-18 15:06:38 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-02-18 15:06:38 -0800
commit0a44cac8105059eb756ed4276e932e54e1ba004d (patch)
tree5550d42487720100990fc71d324a1cd2ebd9809d /include
parentMerge tag 'tpmdd-next-20200217' of git://git.infradead.org/users/jjs/linux-tpmdd (diff)
parentdma-direct: improve DMA mask overflow reporting (diff)
downloadlinux-dev-0a44cac8105059eb756ed4276e932e54e1ba004d.tar.xz
linux-dev-0a44cac8105059eb756ed4276e932e54e1ba004d.zip
Merge tag 'dma-mapping-5.6' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig: - give command line cma= precedence over the CONFIG_ option (Nicolas Saenz Julienne) - always allow 32-bit DMA, even for weirdly placed ZONE_DMA - improve the debug printks when memory is not addressable, to help find problems with swiotlb initialization * tag 'dma-mapping-5.6' of git://git.infradead.org/users/hch/dma-mapping: dma-direct: improve DMA mask overflow reporting dma-direct: improve swiotlb error reporting dma-direct: relax addressability checks in dma_direct_supported dma-contiguous: CMA: give precedence to cmdline
Diffstat (limited to 'include')
-rw-r--r--include/linux/swiotlb.h11
1 files changed, 3 insertions, 8 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index cde3dc18e21a..046bb94bd4d6 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -64,6 +64,9 @@ extern void swiotlb_tbl_sync_single(struct device *hwdev,
size_t size, enum dma_data_direction dir,
enum dma_sync_target target);
+dma_addr_t swiotlb_map(struct device *dev, phys_addr_t phys,
+ size_t size, enum dma_data_direction dir, unsigned long attrs);
+
#ifdef CONFIG_SWIOTLB
extern enum swiotlb_force swiotlb_force;
extern phys_addr_t io_tlb_start, io_tlb_end;
@@ -73,8 +76,6 @@ static inline bool is_swiotlb_buffer(phys_addr_t paddr)
return paddr >= io_tlb_start && paddr < io_tlb_end;
}
-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);
@@ -85,12 +86,6 @@ static inline bool is_swiotlb_buffer(phys_addr_t paddr)
{
return false;
}
-static inline 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)
-{
- return false;
-}
static inline void swiotlb_exit(void)
{
}