diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index ea0378c8b049..e67785191032 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -609,6 +609,7 @@ struct amdgpu_ttm_tt { spinlock_t guptasklock; struct list_head guptasks; atomic_t mmu_invalidations; + uint32_t last_set_pages; struct list_head list; }; @@ -672,8 +673,10 @@ release_pages: void amdgpu_ttm_tt_set_user_pages(struct ttm_tt *ttm, struct page **pages) { + struct amdgpu_ttm_tt *gtt = (void *)ttm; unsigned i; + gtt->last_set_pages = atomic_read(>t->mmu_invalidations); for (i = 0; i < ttm->num_pages; ++i) { if (ttm->pages[i]) put_page(ttm->pages[i]); @@ -1025,6 +1028,7 @@ int amdgpu_ttm_tt_set_userptr(struct ttm_tt *ttm, uint64_t addr, spin_lock_init(>t->guptasklock); INIT_LIST_HEAD(>t->guptasks); atomic_set(>t->mmu_invalidations, 0); + gtt->last_set_pages = 0; return 0; } @@ -1077,6 +1081,16 @@ bool amdgpu_ttm_tt_userptr_invalidated(struct ttm_tt *ttm, return prev_invalidated != *last_invalidated; } +bool amdgpu_ttm_tt_userptr_needs_pages(struct ttm_tt *ttm) +{ + struct amdgpu_ttm_tt *gtt = (void *)ttm; + + if (gtt == NULL || !gtt->userptr) + return false; + + return atomic_read(>t->mmu_invalidations) != gtt->last_set_pages; +} + bool amdgpu_ttm_tt_is_readonly(struct ttm_tt *ttm) { struct amdgpu_ttm_tt *gtt = (void *)ttm; |