Displaying 3 results from an estimated 3 matches for "min_mask".
2019 Feb 07
0
[PATCH v7 3/5] dma: Introduce dma_max_mapping_size()
...(struct device *dev, void *ptr,
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 355d16acee6d..6310ad01f915 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -380,3 +380,14 @@ int dma_direct_supported(struct device *dev, u64 mask)
*/
return mask >= __phys_to_dma(dev, min_mask);
}
+
+size_t dma_direct_max_mapping_size(struct device *dev)
+{
+ size_t size = SIZE_MAX;
+
+ /* If SWIOTLB is active, use its maximum mapping size */
+ if (is_swiotlb_active())
+ size = swiotlb_max_mapping_size(dev);
+
+ return size;
+}
diff --git a/kernel/dma/mapping.c b/kernel/dma/mapping.c
i...
2019 Feb 07
5
[PATCH v7 0/5] Fix virtio-blk issue with SWIOTLB
Hi,
here is the next version of this patch-set. Previous
versions can be found here:
V1: https://lore.kernel.org/lkml/20190110134433.15672-1-joro at 8bytes.org/
V2: https://lore.kernel.org/lkml/20190115132257.6426-1-joro at 8bytes.org/
V3: https://lore.kernel.org/lkml/20190123163049.24863-1-joro at 8bytes.org/
V4: https://lore.kernel.org/lkml/20190129084342.26030-1-joro at 8bytes.org/
2020 Aug 19
39
a saner API for allocating DMA addressable pages
Hi all,
this series replaced the DMA_ATTR_NON_CONSISTENT flag to dma_alloc_attrs
with a separate new dma_alloc_pages API, which is available on all
platforms. In addition to cleaning up the convoluted code path, this
ensures that other drivers that have asked for better support for
non-coherent DMA to pages with incurring bounce buffering over can finally
be properly supported.
I'm still a