diff options
| author | Christoph Hellwig <hch@lst.de> | 2019-02-13 08:01:05 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-02-18 22:41:02 +1100 |
| commit | 8617a5c5bc001e52c40d6b2ece78e8f332039217 (patch) | |
| tree | 79af57e1b85923c38b42c490fcc7b9c21cb32728 /arch/powerpc/include/asm/device.h | |
| parent | a20f507f577b04f286c88a4885ac528e69f6f308 (diff) | |
| download | linux-8617a5c5bc001e52c40d6b2ece78e8f332039217.tar.bz2 | |
powerpc/dma: handle iommu bypass in dma_iommu_ops
Add a new iommu_bypass flag to struct dev_archdata so that the dma_iommu
implementation can handle the direct mapping transparently instead of
switiching ops around. Setting of this flag is controlled by new
pci_controller_ops method.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/device.h')
| -rw-r--r-- | arch/powerpc/include/asm/device.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/device.h b/arch/powerpc/include/asm/device.h index 0245bfcaac32..1aa53318b4bc 100644 --- a/arch/powerpc/include/asm/device.h +++ b/arch/powerpc/include/asm/device.h @@ -20,6 +20,11 @@ struct iommu_table; */ struct dev_archdata { /* + * Set to %true if the dma_iommu_ops are requested to use a direct + * window instead of dynamically mapping memory. + */ + bool iommu_bypass : 1; + /* * These two used to be a union. However, with the hybrid ops we need * both so here we store both a DMA offset for direct mappings and * an iommu_table for remapped DMA. |