diff options
| author |   Christoph Hellwig <hch@lst.de> | 2019-02-13 08:01:31 +0100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-02-18 22:41:04 +1100 |
| commit | 7610fdf5e056ad5764d19f39db49b11608334610 (patch) | |
| tree | c136aede7dbdbc55a575ff3763378ab3cdfddf49 /arch/powerpc/include | |
| parent | powerpc/dma: use the generic direct mapping bypass (diff) | |
| download | linux-dev-7610fdf5e056ad5764d19f39db49b11608334610.tar.xz linux-dev-7610fdf5e056ad5764d19f39db49b11608334610.zip | |
powerpc/dma: remove get_dma_offset
Just fold the calculation into __phys_to_dma/__dma_to_phys as those are
the only places that should know about it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Tested-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/dma-direct.h | 8 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/dma-mapping.h | 16 |
2 files changed, 6 insertions, 18 deletions
diff --git a/arch/powerpc/include/asm/dma-direct.h b/arch/powerpc/include/asm/dma-direct.h index 92d8aed86422..a2912b47102c 100644 --- a/arch/powerpc/include/asm/dma-direct.h +++ b/arch/powerpc/include/asm/dma-direct.h @@ -13,11 +13,15 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size) static inline dma_addr_t __phys_to_dma(struct device *dev, phys_addr_t paddr) { - return paddr + get_dma_offset(dev); + if (!dev) + return paddr + PCI_DRAM_OFFSET; + return paddr + dev->archdata.dma_offset; } static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t daddr) { - return daddr - get_dma_offset(dev); + if (!dev) + return daddr - PCI_DRAM_OFFSET; + return daddr - dev->archdata.dma_offset; } #endif /* ASM_POWERPC_DMA_DIRECT_H */ diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h index 93e57e28be28..c70f55d2f5e0 100644 --- a/arch/powerpc/include/asm/dma-mapping.h +++ b/arch/powerpc/include/asm/dma-mapping.h @@ -43,22 +43,6 @@ static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus) return NULL; } -/* - * get_dma_offset() - * - * Get the dma offset on configurations where the dma address can be determined - * from the physical address by looking at a simple offset. Direct dma and - * swiotlb use this function, but it is typically not used by implementations - * with an iommu. - */ -static inline dma_addr_t get_dma_offset(struct device *dev) -{ - if (dev) - return dev->archdata.dma_offset; - - return PCI_DRAM_OFFSET; -} - static inline void set_dma_offset(struct device *dev, dma_addr_t off) { if (dev) |