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authorChristoph Hellwig <hch@lst.de>2020-09-01 14:34:33 +0300
committerChristoph Hellwig <hch@lst.de>2020-09-25 07:20:47 +0300
commitefa70f2fdc842e63a0a13223e0e83cedcc2117f1 (patch)
treeef21550627a0a50be9edf10c53542f9c59a61896 /drivers/parisc
parent5a84292271402cffe0717bc58e2ad9a0c7977272 (diff)
downloadlinux-efa70f2fdc842e63a0a13223e0e83cedcc2117f1.tar.xz
dma-mapping: add a new dma_alloc_pages API
This API is the equivalent of alloc_pages, except that the returned memory is guaranteed to be DMA addressable by the passed in device. The implementation will also be used to provide a more sensible replacement for DMA_ATTR_NON_CONSISTENT flag. Additionally dma_alloc_noncoherent is switched over to use dma_alloc_pages as its backend. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> (MIPS part)
Diffstat (limited to 'drivers/parisc')
-rw-r--r--drivers/parisc/ccio-dma.c2
-rw-r--r--drivers/parisc/sba_iommu.c2
2 files changed, 4 insertions, 0 deletions
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index ba16b7f8f806..8cf0b9c8bdf7 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -1024,6 +1024,8 @@ static const struct dma_map_ops ccio_ops = {
.map_sg = ccio_map_sg,
.unmap_sg = ccio_unmap_sg,
.get_sgtable = dma_common_get_sgtable,
+ .alloc_pages = dma_common_alloc_pages,
+ .free_pages = dma_common_free_pages,
};
#ifdef CONFIG_PROC_FS
diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c
index 959bda193b96..6fcde7980358 100644
--- a/drivers/parisc/sba_iommu.c
+++ b/drivers/parisc/sba_iommu.c
@@ -1076,6 +1076,8 @@ static const struct dma_map_ops sba_ops = {
.map_sg = sba_map_sg,
.unmap_sg = sba_unmap_sg,
.get_sgtable = dma_common_get_sgtable,
+ .alloc_pages = dma_common_alloc_pages,
+ .free_pages = dma_common_free_pages,
};