sta2x11 is the only x86 device that depends custom DMA direct functions. It turns out it can be made standard by carefully setting the device's DMA masks and offset.
Originally only patch #2 was sent but I realised patch #1 is also needed, which is a good addition as it's also a prerequisite to get proper DMA support on the Raspberry Pi 4[1]. [1] https://lkml.org/lkml/2019/10/15/523 --- Changes since v2: - cleanup dma-direct.h Changes since v1: - Small cleanups in sta2x11-fixup.x - add patch checking DMA addresses lower bounds Nicolas Saenz Julienne (2): dma-direct: check for overflows on 32 bit DMA addresses x86/PCI: sta2x11: use default DMA address translation arch/x86/Kconfig | 1 - arch/x86/include/asm/device.h | 3 - arch/x86/include/asm/dma-direct.h | 9 -- arch/x86/pci/sta2x11-fixup.c | 135 ++++++------------------------ include/linux/dma-direct.h | 12 ++- 5 files changed, 36 insertions(+), 124 deletions(-) delete mode 100644 arch/x86/include/asm/dma-direct.h -- 2.23.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
