diff options
| author | Thomas Zimmermann <tzimmermann@suse.de> | 2021-05-25 17:10:52 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2021-05-26 20:56:33 +0200 |
| commit | 265ec0dd1a0d18f4114f62c0d4a794bb4e729bc1 (patch) | |
| tree | f9cd820d7d534a054546fad5c4afd9e2fabd8c2e /drivers/gpu/drm/nouveau/nouveau_ttm.c | |
| parent | 645e954137f0a522e970ccff72547f57f93c2f72 (diff) | |
drm/nouveau: Implement mmap as GEM object function
Moving the driver-specific mmap code into a GEM object function allows
for using DRM helpers for various mmap callbacks.
The GEM object function is provided by GEM TTM helpers. Nouveau's
implementation of verify_access is unused and has been removed. Access
permissions are validated by the DRM helpers.
As a side effect, nouveau_ttm_vm_ops and nouveau_ttm_fault() are now
implemented in nouveau's GEM code.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210525151055.8174-5-tzimmermann@suse.de
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_ttm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_ttm.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c index 468eacb41f05..65430912ff72 100644 --- a/drivers/gpu/drm/nouveau/nouveau_ttm.c +++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c @@ -125,55 +125,6 @@ const struct ttm_resource_manager_func nv04_gart_manager = { .free = nouveau_manager_del, }; -static vm_fault_t nouveau_ttm_fault(struct vm_fault *vmf) -{ - struct vm_area_struct *vma = vmf->vma; - struct ttm_buffer_object *bo = vma->vm_private_data; - pgprot_t prot; - vm_fault_t ret; - - ret = ttm_bo_vm_reserve(bo, vmf); - if (ret) - return ret; - - ret = nouveau_ttm_fault_reserve_notify(bo); - if (ret) - goto error_unlock; - - nouveau_bo_del_io_reserve_lru(bo); - prot = vm_get_page_prot(vma->vm_flags); - ret = ttm_bo_vm_fault_reserved(vmf, prot, TTM_BO_VM_NUM_PREFAULT, 1); - nouveau_bo_add_io_reserve_lru(bo); - if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) - return ret; - -error_unlock: - dma_resv_unlock(bo->base.resv); - return ret; -} - -static const struct vm_operations_struct nouveau_ttm_vm_ops = { - .fault = nouveau_ttm_fault, - .open = ttm_bo_vm_open, - .close = ttm_bo_vm_close, - .access = ttm_bo_vm_access -}; - -int -nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma) -{ - struct drm_file *file_priv = filp->private_data; - struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev); - int ret; - - ret = ttm_bo_mmap(filp, vma, &drm->ttm.bdev); - if (ret) - return ret; - - vma->vm_ops = &nouveau_ttm_vm_ops; - return 0; -} - static int nouveau_ttm_init_host(struct nouveau_drm *drm, u8 kind) { |