On Tue, 9 Jun 2026 16:28:51 -0700 Rubin Du <[email protected]> wrote:
> Patch 1: > > Add a chunking loop to vfio_pci_driver_memcpy() so that it handles > arbitrarily sized memcpy requests by breaking them into > max_memcpy_size-sized chunks. This allows tests to request any memcpy > size. Update the test to use a size of 4x max_memcpy_size to exercise > the chunking logic. > > Patch 2: > > Add vfio_pci_cmd_set()/vfio_pci_cmd_clear() macros for PCI_COMMAND > operations. > > Patch 3: > > Allow drivers that cannot trigger MSI interrupts to leave the > send_msi callback NULL. Tests check ops->send_msi directly and > gracefully skip MSI-related operations when it is absent. > > Patch 4: > > Introduce the nv_falcon plugin driver, which extracts and adapts > relevant functionality from NVIDIA's gpu-admin-tools project [1] and > integrates it into the VFIO selftest framework. As a result, any > system equipped with a PCIe slot and a supported NVIDIA GPU can now > run VFIO DMA selftests using commonly available hardware. > > Falcons are general-purpose microcontrollers present on NVIDIA GPUs > that can perform DMA operations between system memory and device > memory. > > [1] https://github.com/NVIDIA/gpu-admin-tools > > Changes for v14: > - Re-tested with vfio_pci_driver_test on K2200, M60, P100, P4000, V100, > T4, RTX 3090, RTX 4000 Ada and H100. > - Alex prepared this respin addressing David's review of v13. > - Patch 1 & 3: No change. > - Patch 2: R-b collected. > - Patch 4: address David's review - > - Include <linux/types.h> > - Factor out get_elapsed_ms() > - Rename NV_*_BOOT_COMPLETE_MASK to _SUCCESS > - Drop the redundant falcon_enable() and move the no_outside_reset > check to the top of falcon_enable() so falcon_reset() is > unconditional > - Fold dev_err() and size_to_dma_encoding() into nv_falcon_dma() > - Drop gpu->memcpy_count and the redundant GPU_ARCH_UNKNOWN assert > - Alignment fixes > > Note on version numbering: v1 through v9 were internal review iterations > that were mistakenly carried over to the upstream submission. Apologies > for the confusion, the internal changelog has been dropped. > > Rubin Du (4): > vfio: selftests: Add memcpy chunking to vfio_pci_driver_memcpy() > vfio: selftests: Add generic PCI command register helpers > vfio: selftests: Allow drivers without send_msi() support > vfio: selftests: Add NVIDIA Falcon driver for DMA testing > > .../selftests/vfio/lib/drivers/nv_falcon/hw.h | 352 ++++++++ > .../vfio/lib/drivers/nv_falcon/nv_falcon.c | 783 ++++++++++++++++++ > .../lib/include/libvfio/vfio_pci_device.h | 14 + > tools/testing/selftests/vfio/lib/libvfio.mk | 2 + > .../selftests/vfio/lib/vfio_pci_driver.c | 21 +- > .../selftests/vfio/vfio_pci_driver_test.c | 57 +- > 6 files changed, 1206 insertions(+), 23 deletions(-) > create mode 100644 tools/testing/selftests/vfio/lib/drivers/nv_falcon/hw.h > create mode 100644 > tools/testing/selftests/vfio/lib/drivers/nv_falcon/nv_falcon.c > > > base-commit: d0c3bcd5b8976159d835a897254048e078f447e6 > -- > 2.43.0 Applied to vfio next branch for v7.3. Thanks, Alex
