diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_gem.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_gem.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 05ea2f39f626..ff8849827d61 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -44,6 +44,42 @@ void radeon_gem_prime_unpin(struct drm_gem_object *obj); const struct drm_gem_object_funcs radeon_gem_object_funcs; +static vm_fault_t radeon_gem_fault(struct vm_fault *vmf) +{ + struct ttm_buffer_object *bo = vmf->vma->vm_private_data; + struct radeon_device *rdev = radeon_get_rdev(bo->bdev); + vm_fault_t ret; + + down_read(&rdev->pm.mclk_lock); + + ret = ttm_bo_vm_reserve(bo, vmf); + if (ret) + goto unlock_mclk; + + ret = radeon_bo_fault_reserve_notify(bo); + if (ret) + goto unlock_resv; + + ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot, + TTM_BO_VM_NUM_PREFAULT, 1); + if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) + goto unlock_mclk; + +unlock_resv: + dma_resv_unlock(bo->base.resv); + +unlock_mclk: + up_read(&rdev->pm.mclk_lock); + return ret; +} + +static const struct vm_operations_struct radeon_gem_vm_ops = { + .fault = radeon_gem_fault, + .open = ttm_bo_vm_open, + .close = ttm_bo_vm_close, + .access = ttm_bo_vm_access +}; + static void radeon_gem_object_free(struct drm_gem_object *gobj) { struct radeon_bo *robj = gem_to_radeon_bo(gobj); @@ -226,6 +262,17 @@ static int radeon_gem_handle_lockup(struct radeon_device *rdev, int r) return r; } +static int radeon_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) +{ + struct radeon_bo *bo = gem_to_radeon_bo(obj); + struct radeon_device *rdev = radeon_get_rdev(bo->tbo.bdev); + + if (radeon_ttm_tt_has_userptr(rdev, bo->tbo.ttm)) + return -EPERM; + + return drm_gem_ttm_mmap(obj, vma); +} + const struct drm_gem_object_funcs radeon_gem_object_funcs = { .free = radeon_gem_object_free, .open = radeon_gem_object_open, @@ -236,6 +283,8 @@ const struct drm_gem_object_funcs radeon_gem_object_funcs = { .get_sg_table = radeon_gem_prime_get_sg_table, .vmap = drm_gem_ttm_vmap, .vunmap = drm_gem_ttm_vunmap, + .mmap = radeon_gem_object_mmap, + .vm_ops = &radeon_gem_vm_ops, }; /* |