This v3 of a series which adds a VFIO selftest driver for the Intel Gigabit Ethernet controller (IGB), specifically targeting the 82576 device. IGB is fully virtualized in QEMU, making it suitable for running VFIO selftests without specialized hardware.
v2: https://lore.kernel.org/kvm/[email protected]/ No major changes for v3. Just addressing comments from Sashiko and David on v2. See changelog for more details. Testing ======= - VFIO selftests builds clean at every commit - vfio_pci_driver_test passes using IGB driver + QEMU. Use the following VNG command to run the tests: vng \ --run arch/x86/boot/bzImage \ --user root \ --disable-microvm \ --memory 32G \ --cpus 8 \ --qemu-opts="-M q35,accel=kvm,kernel-irqchip=split" \ --qemu-opts="-device intel-iommu,intremap=on,caching-mode=on,device-iotlb=on" \ --qemu-opts="-netdev user,id=net0 -device igb,netdev=net0,addr=09.0" \ --append "console=ttyS0 earlyprintk=ttyS0 intel_iommu=on iommu=pt" \ --exec "modprobe vfio-pci && \ ./tools/testing/selftests/vfio/scripts/setup.sh 0000:00:09.0 && \ ./tools/testing/selftests/vfio/scripts/run.sh ./tools/testing/selftests/vfio/vfio_pci_driver_test" -------- Changelog: v2 -> v3 - Poll reset bit and document the required wait time (David/Sashiko) - Fix the logic for enabling PCI_COMMAND_MEMORY (David/Sashiko) - Fail the test if autonegotation fails (David/Sashiko) - Handle endianness conversions (David/Sashiko) - Use real IGB headers at the start of the series (David) v1 -> v2 - Removed the chunking loop in igb_memcpy_start() (David) - Removed redundant writes to status_error and hdr_addr (David) - Include official IGB header files (David) Signed-off-by: Josh Hilke <[email protected]> --- Alex Williamson (8): vfio: selftests: igb: Use PHY internal loopback on 82576 vfio: selftests: igb: Use advanced TX and RX descriptors vfio: selftests: igb: Program MSI-X interrupt routing vfio: selftests: igb: Extend memcpy completion timeout for line-rate hardware vfio: selftests: igb: Disable PCIe completion timeout retries vfio: selftests: Add helpers to re-enable interrupts vfio: selftests: igb: Factor hardware programming into igb_hw_init() vfio: selftests: igb: Recover after DMA-read faults Josh Hilke (1): vfio: selftests: igb: Add driver for IGB QEMU device .../selftests/vfio/lib/drivers/igb/e1000_82575.h | 1 + .../selftests/vfio/lib/drivers/igb/e1000_defines.h | 1 + .../selftests/vfio/lib/drivers/igb/e1000_regs.h | 1 + tools/testing/selftests/vfio/lib/drivers/igb/igb.c | 530 +++++++++++++++++++++ .../vfio/lib/include/libvfio/vfio_pci_device.h | 14 + tools/testing/selftests/vfio/lib/libvfio.mk | 1 + tools/testing/selftests/vfio/lib/vfio_pci_device.c | 22 + tools/testing/selftests/vfio/lib/vfio_pci_driver.c | 2 + 8 files changed, 572 insertions(+) --- base-commit: de61419bb27f985cb878b19942a55b026c9c865a change-id: 20260707-igb_v3_b4-49194c14373c Best regards, -- Josh Hilke <[email protected]>
