The following series add VFIO support for AMBA devices. It introduces multiple compatible string support to deal with arm,primecell compatible string. The VFIOPlatformDevice now checks for this string and performs amba specific operations if it is present (change path of the device, add clock in the fd). This patch applies on top of http://git.linaro.org/people/eric.auger/qemu.git on branch vfio_integ_v9_rc6_official_dynsysbus_v6 for irqfd support. TODO: - The IRQ forwarding doesn't work. - VFIO_GET_DEVTREE_INFO integration. The series has been tested using PL330 device, irq forwarding doesn't work. (The test hangs on the first IRQ). The test performed relies on a special guest kernel, which can be found here http://github.com/virtualopensystems/linux-kvm-arm.git on branch vfio-platform-v6-guide, with CONFIG_KVM, CONFIG_ARM_SMMU, CONFIG_PL330_DMA and CONFIG_VOSYS_DMATEST enabled. Run qemu using this command: ./qemu-system-arm -M virt -m 512M -enable-kvm \ -device vfio-pl330,host="2c0a0000.dma",id=dma,x-irqfd=false,x-forward=false \ -append "earlyprintk console=ttyAMA0" \ -kernel zImage -nographic Then run DMA test: mount -t debugfs none /sys/kernel/debug echo 1 > /sys/kernel/debug/vosys_dmatest/start Results can be checked using dmesg. Changes since v1: - Remove add_generic_fdt_node - Refactor add_calxeda_midway_xgmac_fdt_node for code reuse - Add add_arm_pl330_fdt_node Baptiste Reynal (3): hw/vfio/sysbus-fdt: refactoring hw/vfio: amba device support hw/vfio: add pl330 device support hw/arm/sysbus-fdt.c | 180 ++++++++++++++++++++++++++++++++++++------ hw/vfio/Makefile.objs | 1 + hw/vfio/pl330.c | 41 ++++++++++ hw/vfio/platform.c | 15 +++- include/hw/vfio/vfio-common.h | 1 + include/hw/vfio/vfio-pl330.h | 26 ++++++ 6 files changed, 235 insertions(+), 29 deletions(-) create mode 100644 hw/vfio/pl330.c create mode 100644 include/hw/vfio/vfio-pl330.h -- 2.2.1 _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
