diff options
| author | Josh Hilke <jrhilke@google.com> | 2025-08-22 21:24:52 +0000 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2025-08-27 12:14:02 -0600 |
| commit | b477e7bcd25ecb4da91bb52d5f980611cc77d543 (patch) | |
| tree | 180ec2948ebed6b5068626f5abf9d5f7eb242960 /tools/testing | |
| parent | 790588f06e9ce58c281faeada453f47361bc06b6 (diff) | |
vfio: selftests: Move vfio dma mapping test to their own file
Move the dma_map_unmap test from vfio_pci_device_test to a new test:
vfio_dma_mapping_test. We are going to add more complex dma mapping
tests, so it makes sense to separate this from the vfio pci device
test which is more of a sanity check for vfio pci functionality.
Signed-off-by: Josh Hilke <jrhilke@google.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David Matlack <dmatlack@google.com>
Link: https://lore.kernel.org/r/20250822212518.4156428-6-dmatlack@google.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/vfio/Makefile | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/vfio/vfio_dma_mapping_test.c | 51 | ||||
| -rw-r--r-- | tools/testing/selftests/vfio/vfio_pci_device_test.c | 18 |
3 files changed, 52 insertions, 18 deletions
diff --git a/tools/testing/selftests/vfio/Makefile b/tools/testing/selftests/vfio/Makefile index e4a5d6eadff3..05c5a585cca6 100644 --- a/tools/testing/selftests/vfio/Makefile +++ b/tools/testing/selftests/vfio/Makefile @@ -1,4 +1,5 @@ CFLAGS = $(KHDR_INCLUDES) +TEST_GEN_PROGS += vfio_dma_mapping_test TEST_GEN_PROGS += vfio_iommufd_setup_test TEST_GEN_PROGS += vfio_pci_device_test include ../lib.mk diff --git a/tools/testing/selftests/vfio/vfio_dma_mapping_test.c b/tools/testing/selftests/vfio/vfio_dma_mapping_test.c new file mode 100644 index 000000000000..b56cebbf97eb --- /dev/null +++ b/tools/testing/selftests/vfio/vfio_dma_mapping_test.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include <fcntl.h> + +#include <sys/mman.h> + +#include <linux/sizes.h> +#include <linux/vfio.h> + +#include <vfio_util.h> + +#include "../kselftest_harness.h" + +static const char *device_bdf; + +FIXTURE(vfio_dma_mapping_test) { + struct vfio_pci_device *device; +}; + +FIXTURE_SETUP(vfio_dma_mapping_test) +{ + self->device = vfio_pci_device_init(device_bdf, VFIO_TYPE1_IOMMU); +} + +FIXTURE_TEARDOWN(vfio_dma_mapping_test) +{ + vfio_pci_device_cleanup(self->device); +} + +TEST_F(vfio_dma_mapping_test, dma_map_unmap) +{ + const u64 size = SZ_2M; + void *mem; + u64 iova; + + mem = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); + ASSERT_NE(mem, MAP_FAILED); + + iova = (u64)mem; + + vfio_pci_dma_map(self->device, iova, size, mem); + printf("Mapped HVA %p (size 0x%lx) at IOVA 0x%lx\n", mem, size, iova); + vfio_pci_dma_unmap(self->device, iova, size); + + ASSERT_TRUE(!munmap(mem, size)); +} + +int main(int argc, char *argv[]) +{ + device_bdf = vfio_selftests_get_bdf(&argc, argv); + return test_harness_run(argc, argv); +} diff --git a/tools/testing/selftests/vfio/vfio_pci_device_test.c b/tools/testing/selftests/vfio/vfio_pci_device_test.c index 3e7049b9c8f6..a2e41398d184 100644 --- a/tools/testing/selftests/vfio/vfio_pci_device_test.c +++ b/tools/testing/selftests/vfio/vfio_pci_device_test.c @@ -36,24 +36,6 @@ FIXTURE_TEARDOWN(vfio_pci_device_test) vfio_pci_device_cleanup(self->device); } -TEST_F(vfio_pci_device_test, dma_map_unmap) -{ - const u64 size = SZ_2M; - void *mem; - u64 iova; - - mem = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); - ASSERT_NE(mem, MAP_FAILED); - - iova = (u64)mem; - - vfio_pci_dma_map(self->device, iova, size, mem); - printf("Mapped HVA %p (size 0x%lx) at IOVA 0x%lx\n", mem, size, iova); - vfio_pci_dma_unmap(self->device, iova, size); - - ASSERT_TRUE(!munmap(mem, SZ_2M)); -} - #define read_pci_id_from_sysfs(_file) ({ \ char __sysfs_path[PATH_MAX]; \ char __buf[32]; \ |