From dc50eab76b709d68175a358d6e23a5a3890764d3 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 19:39:57 +0200 Subject: Merging upstream version 6.7.7. Signed-off-by: Daniel Baumann --- tools/testing/selftests/iommu/iommufd.c | 379 ++++++++++++++++++++++++++++++-- 1 file changed, 362 insertions(+), 17 deletions(-) (limited to 'tools/testing/selftests/iommu/iommufd.c') diff --git a/tools/testing/selftests/iommu/iommufd.c b/tools/testing/selftests/iommu/iommufd.c index 33d08600be..6ed328c863 100644 --- a/tools/testing/selftests/iommu/iommufd.c +++ b/tools/testing/selftests/iommu/iommufd.c @@ -86,12 +86,13 @@ TEST_F(iommufd, cmd_fail) TEST_F(iommufd, cmd_length) { -#define TEST_LENGTH(_struct, _ioctl) \ +#define TEST_LENGTH(_struct, _ioctl, _last) \ { \ + size_t min_size = offsetofend(struct _struct, _last); \ struct { \ struct _struct cmd; \ uint8_t extra; \ - } cmd = { .cmd = { .size = sizeof(struct _struct) - 1 }, \ + } cmd = { .cmd = { .size = min_size - 1 }, \ .extra = UINT8_MAX }; \ int old_errno; \ int rc; \ @@ -112,16 +113,19 @@ TEST_F(iommufd, cmd_length) } \ } - TEST_LENGTH(iommu_destroy, IOMMU_DESTROY); - TEST_LENGTH(iommu_hw_info, IOMMU_GET_HW_INFO); - TEST_LENGTH(iommu_ioas_alloc, IOMMU_IOAS_ALLOC); - TEST_LENGTH(iommu_ioas_iova_ranges, IOMMU_IOAS_IOVA_RANGES); - TEST_LENGTH(iommu_ioas_allow_iovas, IOMMU_IOAS_ALLOW_IOVAS); - TEST_LENGTH(iommu_ioas_map, IOMMU_IOAS_MAP); - TEST_LENGTH(iommu_ioas_copy, IOMMU_IOAS_COPY); - TEST_LENGTH(iommu_ioas_unmap, IOMMU_IOAS_UNMAP); - TEST_LENGTH(iommu_option, IOMMU_OPTION); - TEST_LENGTH(iommu_vfio_ioas, IOMMU_VFIO_IOAS); + TEST_LENGTH(iommu_destroy, IOMMU_DESTROY, id); + TEST_LENGTH(iommu_hw_info, IOMMU_GET_HW_INFO, __reserved); + TEST_LENGTH(iommu_hwpt_alloc, IOMMU_HWPT_ALLOC, __reserved); + TEST_LENGTH(iommu_ioas_alloc, IOMMU_IOAS_ALLOC, out_ioas_id); + TEST_LENGTH(iommu_ioas_iova_ranges, IOMMU_IOAS_IOVA_RANGES, + out_iova_alignment); + TEST_LENGTH(iommu_ioas_allow_iovas, IOMMU_IOAS_ALLOW_IOVAS, + allowed_iovas); + TEST_LENGTH(iommu_ioas_map, IOMMU_IOAS_MAP, iova); + TEST_LENGTH(iommu_ioas_copy, IOMMU_IOAS_COPY, src_iova); + TEST_LENGTH(iommu_ioas_unmap, IOMMU_IOAS_UNMAP, length); + TEST_LENGTH(iommu_option, IOMMU_OPTION, val64); + TEST_LENGTH(iommu_vfio_ioas, IOMMU_VFIO_IOAS, __reserved); #undef TEST_LENGTH } @@ -260,6 +264,121 @@ TEST_F(iommufd_ioas, ioas_destroy) } } +TEST_F(iommufd_ioas, alloc_hwpt_nested) +{ + const uint32_t min_data_len = + offsetofend(struct iommu_hwpt_selftest, iotlb); + struct iommu_hwpt_selftest data = { + .iotlb = IOMMU_TEST_IOTLB_DEFAULT, + }; + uint32_t nested_hwpt_id[2] = {}; + uint32_t parent_hwpt_id = 0; + uint32_t parent_hwpt_id_not_work = 0; + uint32_t test_hwpt_id = 0; + + if (self->device_id) { + /* Negative tests */ + test_err_hwpt_alloc(ENOENT, self->ioas_id, self->device_id, 0, + &test_hwpt_id); + test_err_hwpt_alloc(EINVAL, self->device_id, self->device_id, 0, + &test_hwpt_id); + + test_cmd_hwpt_alloc(self->device_id, self->ioas_id, + IOMMU_HWPT_ALLOC_NEST_PARENT, + &parent_hwpt_id); + + test_cmd_hwpt_alloc(self->device_id, self->ioas_id, 0, + &parent_hwpt_id_not_work); + + /* Negative nested tests */ + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_NONE, &data, + sizeof(data)); + test_err_hwpt_alloc_nested(EOPNOTSUPP, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST + 1, &data, + sizeof(data)); + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, + min_data_len - 1); + test_err_hwpt_alloc_nested(EFAULT, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, NULL, + sizeof(data)); + test_err_hwpt_alloc_nested( + EOPNOTSUPP, self->device_id, parent_hwpt_id, + IOMMU_HWPT_ALLOC_NEST_PARENT, &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, sizeof(data)); + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + parent_hwpt_id_not_work, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + + /* Allocate two nested hwpts sharing one common parent hwpt */ + test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + test_cmd_hwpt_alloc_nested(self->device_id, parent_hwpt_id, 0, + &nested_hwpt_id[1], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + + /* Negative test: a nested hwpt on top of a nested hwpt */ + test_err_hwpt_alloc_nested(EINVAL, self->device_id, + nested_hwpt_id[0], 0, &test_hwpt_id, + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + /* Negative test: parent hwpt now cannot be freed */ + EXPECT_ERRNO(EBUSY, + _test_ioctl_destroy(self->fd, parent_hwpt_id)); + + /* Attach device to nested_hwpt_id[0] that then will be busy */ + test_cmd_mock_domain_replace(self->stdev_id, nested_hwpt_id[0]); + EXPECT_ERRNO(EBUSY, + _test_ioctl_destroy(self->fd, nested_hwpt_id[0])); + + /* Switch from nested_hwpt_id[0] to nested_hwpt_id[1] */ + test_cmd_mock_domain_replace(self->stdev_id, nested_hwpt_id[1]); + EXPECT_ERRNO(EBUSY, + _test_ioctl_destroy(self->fd, nested_hwpt_id[1])); + test_ioctl_destroy(nested_hwpt_id[0]); + + /* Detach from nested_hwpt_id[1] and destroy it */ + test_cmd_mock_domain_replace(self->stdev_id, parent_hwpt_id); + test_ioctl_destroy(nested_hwpt_id[1]); + + /* Detach from the parent hw_pagetable and destroy it */ + test_cmd_mock_domain_replace(self->stdev_id, self->ioas_id); + test_ioctl_destroy(parent_hwpt_id); + test_ioctl_destroy(parent_hwpt_id_not_work); + } else { + test_err_hwpt_alloc(ENOENT, self->device_id, self->ioas_id, 0, + &parent_hwpt_id); + test_err_hwpt_alloc_nested(ENOENT, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[0], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + test_err_hwpt_alloc_nested(ENOENT, self->device_id, + parent_hwpt_id, 0, + &nested_hwpt_id[1], + IOMMU_HWPT_DATA_SELFTEST, &data, + sizeof(data)); + test_err_mock_domain_replace(ENOENT, self->stdev_id, + nested_hwpt_id[0]); + test_err_mock_domain_replace(ENOENT, self->stdev_id, + nested_hwpt_id[1]); + } +} + TEST_F(iommufd_ioas, hwpt_attach) { /* Create a device attached directly to a hwpt */ @@ -1404,16 +1523,242 @@ TEST_F(iommufd_mock_domain, alloc_hwpt) int i; for (i = 0; i != variant->mock_domains; i++) { + uint32_t hwpt_id[2]; uint32_t stddev_id; - uint32_t hwpt_id; - test_cmd_hwpt_alloc(self->idev_ids[0], self->ioas_id, &hwpt_id); - test_cmd_mock_domain(hwpt_id, &stddev_id, NULL, NULL); + test_err_hwpt_alloc(EOPNOTSUPP, + self->idev_ids[i], self->ioas_id, + ~IOMMU_HWPT_ALLOC_NEST_PARENT, &hwpt_id[0]); + test_cmd_hwpt_alloc(self->idev_ids[i], self->ioas_id, + 0, &hwpt_id[0]); + test_cmd_hwpt_alloc(self->idev_ids[i], self->ioas_id, + IOMMU_HWPT_ALLOC_NEST_PARENT, &hwpt_id[1]); + + /* Do a hw_pagetable rotation test */ + test_cmd_mock_domain_replace(self->stdev_ids[i], hwpt_id[0]); + EXPECT_ERRNO(EBUSY, _test_ioctl_destroy(self->fd, hwpt_id[0])); + test_cmd_mock_domain_replace(self->stdev_ids[i], hwpt_id[1]); + EXPECT_ERRNO(EBUSY, _test_ioctl_destroy(self->fd, hwpt_id[1])); + test_cmd_mock_domain_replace(self->stdev_ids[i], self->ioas_id); + test_ioctl_destroy(hwpt_id[1]); + + test_cmd_mock_domain(hwpt_id[0], &stddev_id, NULL, NULL); test_ioctl_destroy(stddev_id); - test_ioctl_destroy(hwpt_id); + test_ioctl_destroy(hwpt_id[0]); } } +FIXTURE(iommufd_dirty_tracking) +{ + int fd; + uint32_t ioas_id; + uint32_t hwpt_id; + uint32_t stdev_id; + uint32_t idev_id; + unsigned long page_size; + unsigned long bitmap_size; + void *bitmap; + void *buffer; +}; + +FIXTURE_VARIANT(iommufd_dirty_tracking) +{ + unsigned long buffer_size; +}; + +FIXTURE_SETUP(iommufd_dirty_tracking) +{ + void *vrc; + int rc; + + self->fd = open("/dev/iommu", O_RDWR); + ASSERT_NE(-1, self->fd); + + rc = posix_memalign(&self->buffer, HUGEPAGE_SIZE, variant->buffer_size); + if (rc || !self->buffer) { + SKIP(return, "Skipping buffer_size=%lu due to errno=%d", + variant->buffer_size, rc); + } + + assert((uintptr_t)self->buffer % HUGEPAGE_SIZE == 0); + vrc = mmap(self->buffer, variant->buffer_size, PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0); + assert(vrc == self->buffer); + + self->page_size = MOCK_PAGE_SIZE; + self->bitmap_size = + variant->buffer_size / self->page_size / BITS_PER_BYTE; + + /* Provision with an extra (MOCK_PAGE_SIZE) for the unaligned case */ + rc = posix_memalign(&self->bitmap, PAGE_SIZE, + self->bitmap_size + MOCK_PAGE_SIZE); + assert(!rc); + assert(self->bitmap); + assert((uintptr_t)self->bitmap % PAGE_SIZE == 0); + + test_ioctl_ioas_alloc(&self->ioas_id); + test_cmd_mock_domain(self->ioas_id, &self->stdev_id, &self->hwpt_id, + &self->idev_id); +} + +FIXTURE_TEARDOWN(iommufd_dirty_tracking) +{ + munmap(self->buffer, variant->buffer_size); + munmap(self->bitmap, self->bitmap_size); + teardown_iommufd(self->fd, _metadata); +} + +FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty128k) +{ + /* one u32 index bitmap */ + .buffer_size = 128UL * 1024UL, +}; + +FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty256k) +{ + /* one u64 index bitmap */ + .buffer_size = 256UL * 1024UL, +}; + +FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty640k) +{ + /* two u64 index and trailing end bitmap */ + .buffer_size = 640UL * 1024UL, +}; + +FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty128M) +{ + /* 4K bitmap (128M IOVA range) */ + .buffer_size = 128UL * 1024UL * 1024UL, +}; + +FIXTURE_VARIANT_ADD(iommufd_dirty_tracking, domain_dirty256M) +{ + /* 8K bitmap (256M IOVA range) */ + .buffer_size = 256UL * 1024UL * 1024UL, +}; + +TEST_F(iommufd_dirty_tracking, enforce_dirty) +{ + uint32_t ioas_id, stddev_id, idev_id; + uint32_t hwpt_id, _hwpt_id; + uint32_t dev_flags; + + /* Regular case */ + dev_flags = MOCK_FLAGS_DEVICE_NO_DIRTY; + test_cmd_hwpt_alloc(self->idev_id, self->ioas_id, + IOMMU_HWPT_ALLOC_DIRTY_TRACKING, &hwpt_id); + test_cmd_mock_domain(hwpt_id, &stddev_id, NULL, NULL); + test_err_mock_domain_flags(EINVAL, hwpt_id, dev_flags, &stddev_id, + NULL); + test_ioctl_destroy(stddev_id); + test_ioctl_destroy(hwpt_id); + + /* IOMMU device does not support dirty tracking */ + test_ioctl_ioas_alloc(&ioas_id); + test_cmd_mock_domain_flags(ioas_id, dev_flags, &stddev_id, &_hwpt_id, + &idev_id); + test_err_hwpt_alloc(EOPNOTSUPP, idev_id, ioas_id, + IOMMU_HWPT_ALLOC_DIRTY_TRACKING, &hwpt_id); + test_ioctl_destroy(stddev_id); +} + +TEST_F(iommufd_dirty_tracking, set_dirty_tracking) +{ + uint32_t stddev_id; + uint32_t hwpt_id; + + test_cmd_hwpt_alloc(self->idev_id, self->ioas_id, + IOMMU_HWPT_ALLOC_DIRTY_TRACKING, &hwpt_id); + test_cmd_mock_domain(hwpt_id, &stddev_id, NULL, NULL); + test_cmd_set_dirty_tracking(hwpt_id, true); + test_cmd_set_dirty_tracking(hwpt_id, false); + + test_ioctl_destroy(stddev_id); + test_ioctl_destroy(hwpt_id); +} + +TEST_F(iommufd_dirty_tracking, device_dirty_capability) +{ + uint32_t caps = 0; + uint32_t stddev_id; + uint32_t hwpt_id; + + test_cmd_hwpt_alloc(self->idev_id, self->ioas_id, 0, &hwpt_id); + test_cmd_mock_domain(hwpt_id, &stddev_id, NULL, NULL); + test_cmd_get_hw_capabilities(self->idev_id, caps, + IOMMU_HW_CAP_DIRTY_TRACKING); + ASSERT_EQ(IOMMU_HW_CAP_DIRTY_TRACKING, + caps & IOMMU_HW_CAP_DIRTY_TRACKING); + + test_ioctl_destroy(stddev_id); + test_ioctl_destroy(hwpt_id); +} + +TEST_F(iommufd_dirty_tracking, get_dirty_bitmap) +{ + uint32_t stddev_id; + uint32_t hwpt_id; + uint32_t ioas_id; + + test_ioctl_ioas_alloc(&ioas_id); + test_ioctl_ioas_map_fixed_id(ioas_id, self->buffer, + variant->buffer_size, MOCK_APERTURE_START); + + test_cmd_hwpt_alloc(self->idev_id, ioas_id, + IOMMU_HWPT_ALLOC_DIRTY_TRACKING, &hwpt_id); + test_cmd_mock_domain(hwpt_id, &stddev_id, NULL, NULL); + + test_cmd_set_dirty_tracking(hwpt_id, true); + + test_mock_dirty_bitmaps(hwpt_id, variant->buffer_size, + MOCK_APERTURE_START, self->page_size, + self->bitmap, self->bitmap_size, 0, _metadata); + + /* PAGE_SIZE unaligned bitmap */ + test_mock_dirty_bitmaps(hwpt_id, variant->buffer_size, + MOCK_APERTURE_START, self->page_size, + self->bitmap + MOCK_PAGE_SIZE, + self->bitmap_size, 0, _metadata); + + test_ioctl_destroy(stddev_id); + test_ioctl_destroy(hwpt_id); +} + +TEST_F(iommufd_dirty_tracking, get_dirty_bitmap_no_clear) +{ + uint32_t stddev_id; + uint32_t hwpt_id; + uint32_t ioas_id; + + test_ioctl_ioas_alloc(&ioas_id); + test_ioctl_ioas_map_fixed_id(ioas_id, self->buffer, + variant->buffer_size, MOCK_APERTURE_START); + + test_cmd_hwpt_alloc(self->idev_id, ioas_id, + IOMMU_HWPT_ALLOC_DIRTY_TRACKING, &hwpt_id); + test_cmd_mock_domain(hwpt_id, &stddev_id, NULL, NULL); + + test_cmd_set_dirty_tracking(hwpt_id, true); + + test_mock_dirty_bitmaps(hwpt_id, variant->buffer_size, + MOCK_APERTURE_START, self->page_size, + self->bitmap, self->bitmap_size, + IOMMU_HWPT_GET_DIRTY_BITMAP_NO_CLEAR, + _metadata); + + /* Unaligned bitmap */ + test_mock_dirty_bitmaps(hwpt_id, variant->buffer_size, + MOCK_APERTURE_START, self->page_size, + self->bitmap + MOCK_PAGE_SIZE, + self->bitmap_size, + IOMMU_HWPT_GET_DIRTY_BITMAP_NO_CLEAR, + _metadata); + + test_ioctl_destroy(stddev_id); + test_ioctl_destroy(hwpt_id); +} + /* VFIO compatibility IOCTLs */ TEST_F(iommufd, simple_ioctls) @@ -1729,7 +2074,7 @@ TEST_F(vfio_compat_mock_domain, map) ASSERT_EQ(0, ioctl(self->fd, VFIO_IOMMU_UNMAP_DMA, &unmap_cmd)); ASSERT_EQ(BUFFER_SIZE, unmap_cmd.size); - /* UNMAP_FLAG_ALL requres 0 iova/size */ + /* UNMAP_FLAG_ALL requires 0 iova/size */ ASSERT_EQ(0, ioctl(self->fd, VFIO_IOMMU_MAP_DMA, &map_cmd)); unmap_cmd.flags = VFIO_DMA_UNMAP_FLAG_ALL; EXPECT_ERRNO(EINVAL, ioctl(self->fd, VFIO_IOMMU_UNMAP_DMA, &unmap_cmd)); 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