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authorChristoph Hellwig <hch@lst.de>2020-09-01 13:34:33 +0200
committerChristoph Hellwig <hch@lst.de>2020-09-25 06:20:47 +0200
commitefa70f2fdc842e63a0a13223e0e83cedcc2117f1 (patch)
treeef21550627a0a50be9edf10c53542f9c59a61896 /arch/alpha/kernel
parent5a84292271402cffe0717bc58e2ad9a0c7977272 (diff)
downloadlinux-stericsson-efa70f2fdc842e63a0a13223e0e83cedcc2117f1.tar.gz
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 'arch/alpha/kernel')
-rw-r--r--arch/alpha/kernel/pci_iommu.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index 6f7de4f4e191..447e0fd0ed38 100644
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -952,5 +952,7 @@ const struct dma_map_ops alpha_pci_ops = {
.dma_supported = alpha_pci_supported,
.mmap = dma_common_mmap,
.get_sgtable = dma_common_get_sgtable,
+ .alloc_pages = dma_common_alloc_pages,
+ .free_pages = dma_common_free_pages,
};
EXPORT_SYMBOL(alpha_pci_ops);