xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/dma: handle iommu bypass in dma_iommu_ops

Browse Source 
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>
This commit is contained in:
Christoph Hellwig
2019-02-13 08:01:05 +01:00
committed by Michael Ellerman
parent a20f507f57
commit 8617a5c5bc
5 changed files with 87 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/include/asm/pci-bridge.h
View File

@@ -19,6 +19,8 @@ struct device_node;
struct pci_controller_ops {
void (*dma_dev_setup)(struct pci_dev *pdev);
void (*dma_bus_setup)(struct pci_bus *bus);
bool (*iommu_bypass_supported)(struct pci_dev *pdev,
u64 mask);
int (*probe_mode)(struct pci_bus *bus);