The XDMA engine embedded in the AST2500 SOC performs PCI DMA operations between the SOC (acting as a BMC) and a host processor in a server. This series adds a driver to control the XDMA engine in order to easily perform DMA operations to and from the host processor. Changes since v3: - Added a few comments. - Change DMA reservation/allocation/mmap to iomap operations. - Change miscdevice to "aspeed-xdma". - Change default PCI device to the BMC device, not the VGA. - Use length-limited string functions (strncpy, strncasecmp) - Added more debugfs registers Changes since v2: - Switch to one pci device config sysfs file - Add documentation for pci device config sysfs file - Add module parameter for pci device config - Switch to genalloc instead of custom allocator - Fix alignment of user structure - Cleaned up debugfs functions I previously sent this series v1 to drivers/misc, but I'm now fairly certain it belongs in drivers/soc, especially since the other Aspeed drivers have been moved to soc. Changes since v1: - Correct the XDMA command pitch - Don't use packed for the aspeed_xdma_op structure - Correct the SCU PCI config change Eddie James (8): dt-bindings: soc: Add Aspeed XDMA engine binding documentation drivers/soc: Add Aspeed XDMA Engine Driver drivers/soc: xdma: Add user interface Documentation: ABI: Add aspeed-xdma sysfs documentation drivers/soc: xdma: Add PCI device configuration sysfs drivers/soc: xdma: Add debugfs entries ARM: dts: aspeed: Add XDMA Engine ARM: dts: aspeed: witherspoon: Enable XDMA Engine .../ABI/testing/sysfs-devices-platform-aspeed-xdma | 11 + .../devicetree/bindings/soc/aspeed/xdma.txt | 23 + MAINTAINERS | 9 + arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts | 4 + arch/arm/boot/dts/aspeed-g5.dtsi | 8 + drivers/soc/aspeed/Kconfig | 8 + drivers/soc/aspeed/Makefile | 1 + drivers/soc/aspeed/aspeed-xdma.c | 953 +++++++++++++++++++++ include/uapi/linux/aspeed-xdma.h | 26 + 9 files changed, 1043 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-devices-platform-aspeed-xdma create mode 100644 Documentation/devicetree/bindings/soc/aspeed/xdma.txt create mode 100644 drivers/soc/aspeed/aspeed-xdma.c create mode 100644 include/uapi/linux/aspeed-xdma.h -- 1.8.3.1
