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| author | Christoph Hellwig <hch@lst.de> | 2020-09-01 13:34:33 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-09-25 06:20:47 +0200 |
| commit | efa70f2fdc842e63a0a13223e0e83cedcc2117f1 (patch) | |
| tree | ef21550627a0a50be9edf10c53542f9c59a61896 /arch/alpha | |
| parent | 5a84292271402cffe0717bc58e2ad9a0c7977272 (diff) | |
| download | linux-efa70f2fdc842e63a0a13223e0e83cedcc2117f1.tar.bz2 | |
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')
| -rw-r--r-- | arch/alpha/kernel/pci_iommu.c | 2 |
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); |