diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/iommufd/iommufd_test.h | 1 | ||||
| -rw-r--r-- | drivers/iommu/iommufd/selftest.c | 15 |
2 files changed, 14 insertions, 2 deletions
diff --git a/drivers/iommu/iommufd/iommufd_test.h b/drivers/iommu/iommufd/iommufd_test.h index 482d4059f5db..e854d3f67205 100644 --- a/drivers/iommu/iommufd/iommufd_test.h +++ b/drivers/iommu/iommufd/iommufd_test.h @@ -45,6 +45,7 @@ enum { enum { MOCK_FLAGS_DEVICE_NO_DIRTY = 1 << 0, + MOCK_FLAGS_DEVICE_HUGE_IOVA = 1 << 1, }; enum { diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selftest.c index 796e7e3ec0cf..8abf9747773e 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -41,6 +41,7 @@ static atomic_t mock_dev_num; enum { MOCK_DIRTY_TRACK = 1, MOCK_IO_PAGE_SIZE = PAGE_SIZE / 2, + MOCK_HUGE_PAGE_SIZE = 512 * MOCK_IO_PAGE_SIZE, /* * Like a real page table alignment requires the low bits of the address @@ -53,6 +54,7 @@ enum { MOCK_PFN_START_IOVA = _MOCK_PFN_START, MOCK_PFN_LAST_IOVA = _MOCK_PFN_START, MOCK_PFN_DIRTY_IOVA = _MOCK_PFN_START << 1, + MOCK_PFN_HUGE_IOVA = _MOCK_PFN_START << 2, }; /* @@ -242,6 +244,8 @@ static int mock_domain_read_and_clear_dirty(struct iommu_domain *domain, continue; } + if (xa_to_value(ent) & MOCK_PFN_HUGE_IOVA) + pgsize = MOCK_HUGE_PAGE_SIZE; head = iova & ~(pgsize - 1); /* Clear dirty */ @@ -260,6 +264,7 @@ const struct iommu_dirty_ops dirty_ops = { static struct iommu_domain *mock_domain_alloc_paging(struct device *dev) { + struct mock_dev *mdev = container_of(dev, struct mock_dev, dev); struct mock_iommu_domain *mock; mock = kzalloc(sizeof(*mock), GFP_KERNEL); @@ -268,6 +273,8 @@ static struct iommu_domain *mock_domain_alloc_paging(struct device *dev) mock->domain.geometry.aperture_start = MOCK_APERTURE_START; mock->domain.geometry.aperture_end = MOCK_APERTURE_LAST; mock->domain.pgsize_bitmap = MOCK_IO_PAGE_SIZE; + if (dev && mdev->flags & MOCK_FLAGS_DEVICE_HUGE_IOVA) + mock->domain.pgsize_bitmap |= MOCK_HUGE_PAGE_SIZE; mock->domain.ops = mock_ops.default_domain_ops; mock->domain.type = IOMMU_DOMAIN_UNMANAGED; xa_init(&mock->pfns); @@ -313,7 +320,7 @@ mock_domain_alloc_user(struct device *dev, u32 flags, return ERR_PTR(-EOPNOTSUPP); if (user_data || (has_dirty_flag && no_dirty_ops)) return ERR_PTR(-EOPNOTSUPP); - domain = mock_domain_alloc_paging(NULL); + domain = mock_domain_alloc_paging(dev); if (!domain) return ERR_PTR(-ENOMEM); if (has_dirty_flag) @@ -376,6 +383,9 @@ static int mock_domain_map_pages(struct iommu_domain *domain, if (pgcount == 1 && cur + MOCK_IO_PAGE_SIZE == pgsize) flags = MOCK_PFN_LAST_IOVA; + if (pgsize != MOCK_IO_PAGE_SIZE) { + flags |= MOCK_PFN_HUGE_IOVA; + } old = xa_store(&mock->pfns, iova / MOCK_IO_PAGE_SIZE, xa_mk_value((paddr / MOCK_IO_PAGE_SIZE) | flags), @@ -630,7 +640,8 @@ static struct mock_dev *mock_dev_create(unsigned long dev_flags) struct mock_dev *mdev; int rc; - if (dev_flags & ~(MOCK_FLAGS_DEVICE_NO_DIRTY)) + if (dev_flags & + ~(MOCK_FLAGS_DEVICE_NO_DIRTY | MOCK_FLAGS_DEVICE_HUGE_IOVA)) return ERR_PTR(-EINVAL); mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); |