diff options
Diffstat (limited to 'arch/tile/include/asm/dma-mapping.h')
| -rw-r--r-- | arch/tile/include/asm/dma-mapping.h | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/arch/tile/include/asm/dma-mapping.h b/arch/tile/include/asm/dma-mapping.h index 6f522d5..1eae359 100644 --- a/arch/tile/include/asm/dma-mapping.h +++ b/arch/tile/include/asm/dma-mapping.h @@ -92,14 +92,19 @@ dma_set_mask(struct device *dev, u64 mask) { struct dma_map_ops *dma_ops = get_dma_ops(dev); - /* Handle legacy PCI devices with limited memory addressability. */ - if ((dma_ops == gx_pci_dma_map_ops || - dma_ops == gx_hybrid_pci_dma_map_ops || - dma_ops == gx_legacy_pci_dma_map_ops) && - (mask <= DMA_BIT_MASK(32))) { - set_dma_ops(dev, gx_legacy_pci_dma_map_ops); - set_dma_offset(dev, 0); - if (mask > dev->archdata.max_direct_dma_addr) + /* + * For PCI devices with 64-bit DMA addressing capability, promote + * the dma_ops to hybrid, with the consistent memory DMA space limited + * to 32-bit. For 32-bit capable devices, limit the streaming DMA + * address range to max_direct_dma_addr. + */ + if (dma_ops == gx_pci_dma_map_ops || + dma_ops == gx_hybrid_pci_dma_map_ops || + dma_ops == gx_legacy_pci_dma_map_ops) { + if (mask == DMA_BIT_MASK(64) && + dma_ops == gx_legacy_pci_dma_map_ops) + set_dma_ops(dev, gx_hybrid_pci_dma_map_ops); + else if (mask > dev->archdata.max_direct_dma_addr) mask = dev->archdata.max_direct_dma_addr; } |
