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Diffstat (limited to 'linux-core/drm_compat.c')
-rw-r--r--linux-core/drm_compat.c99
1 files changed, 0 insertions, 99 deletions
diff --git a/linux-core/drm_compat.c b/linux-core/drm_compat.c
index 0ccd2ab3..3bf9d100 100644
--- a/linux-core/drm_compat.c
+++ b/linux-core/drm_compat.c
@@ -151,102 +151,3 @@ void idr_remove_all(struct idr *idp)
EXPORT_SYMBOL(idr_remove_all);
#endif /* DRM_IDR_COMPAT_FN */
-
-
-#ifdef DRM_NO_FAULT
-unsigned long drm_bo_vm_nopfn(struct vm_area_struct *vma,
- unsigned long address)
-{
- struct drm_buffer_object *bo = (struct drm_buffer_object *) vma->vm_private_data;
- unsigned long page_offset;
- struct page *page = NULL;
- struct drm_ttm *ttm;
- struct drm_device *dev;
- unsigned long pfn;
- int err;
- unsigned long bus_base;
- unsigned long bus_offset;
- unsigned long bus_size;
- unsigned long ret = NOPFN_REFAULT;
-
- if (address > vma->vm_end)
- return NOPFN_SIGBUS;
-
- dev = bo->dev;
- err = drm_bo_read_lock(&dev->bm.bm_lock, 1);
- if (err)
- return NOPFN_REFAULT;
-
- err = mutex_lock_interruptible(&bo->mutex);
- if (err) {
- drm_bo_read_unlock(&dev->bm.bm_lock);
- return NOPFN_REFAULT;
- }
-
- err = drm_bo_wait(bo, 0, 1, 0, 1);
- if (err) {
- ret = (err != -EAGAIN) ? NOPFN_SIGBUS : NOPFN_REFAULT;
- bo->priv_flags &= ~_DRM_BO_FLAG_UNLOCKED;
- goto out_unlock;
- }
-
- bo->priv_flags &= ~_DRM_BO_FLAG_UNLOCKED;
-
- /*
- * If buffer happens to be in a non-mappable location,
- * move it to a mappable.
- */
-
- if (!(bo->mem.flags & DRM_BO_FLAG_MAPPABLE)) {
- uint32_t new_flags = bo->mem.proposed_flags |
- DRM_BO_FLAG_MAPPABLE |
- DRM_BO_FLAG_FORCE_MAPPABLE;
- err = drm_bo_move_buffer(bo, new_flags, 0, 0);
- if (err) {
- ret = (err != -EAGAIN) ? NOPFN_SIGBUS : NOPFN_REFAULT;
- goto out_unlock;
- }
- }
-
- err = drm_bo_pci_offset(dev, &bo->mem, &bus_base, &bus_offset,
- &bus_size);
-
- if (err) {
- ret = NOPFN_SIGBUS;
- goto out_unlock;
- }
-
- page_offset = (address - vma->vm_start) >> PAGE_SHIFT;
-
- if (bus_size) {
- struct drm_mem_type_manager *man = &dev->bm.man[bo->mem.mem_type];
-
- pfn = ((bus_base + bus_offset) >> PAGE_SHIFT) + page_offset;
- vma->vm_page_prot = drm_io_prot(man->drm_bus_maptype, vma);
- } else {
- ttm = bo->ttm;
-
- drm_ttm_fixup_caching(ttm);
- page = drm_ttm_get_page(ttm, page_offset);
- if (!page) {
- ret = NOPFN_OOM;
- goto out_unlock;
- }
- pfn = page_to_pfn(page);
- vma->vm_page_prot = (bo->mem.flags & DRM_BO_FLAG_CACHED) ?
- vm_get_page_prot(vma->vm_flags) :
- drm_io_prot(_DRM_TTM, vma);
- }
-
- err = vm_insert_pfn(vma, address, pfn);
- if (err) {
- ret = (err != -EAGAIN) ? NOPFN_OOM : NOPFN_REFAULT;
- goto out_unlock;
- }
-out_unlock:
- BUG_ON(bo->priv_flags & _DRM_BO_FLAG_UNLOCKED);
- mutex_unlock(&bo->mutex);
- drm_bo_read_unlock(&dev->bm.bm_lock);
- return ret;
-}
-#endif