drm/radeon/kms: add support for new fault callback V7
This add the support for the new fault callback and also the
infrastructure for supporting unmappable VRAM.
V2 validate BO with no_wait = true
V3 don't derefence bo->mem.mm_node as it's not NULL only for
VRAM or GTT
V4 update to splitted no_wait ttm change
V5 update to new balanced io_mem_reserve/free change
V6 callback is responsible for iomapping memory
V7 move back iomapping to ttm
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c
index 4b441f8..57b3f95 100644
--- a/drivers/gpu/drm/radeon/radeon_object.c
+++ b/drivers/gpu/drm/radeon/radeon_object.c
@@ -498,11 +498,33 @@
radeon_bo_check_tiling(rbo, 0, 1);
}
-void radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
+int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
{
+ struct radeon_device *rdev;
struct radeon_bo *rbo;
+ unsigned long offset, size;
+ int r;
+
if (!radeon_ttm_bo_is_radeon_bo(bo))
- return;
+ return 0;
rbo = container_of(bo, struct radeon_bo, tbo);
radeon_bo_check_tiling(rbo, 0, 0);
+ rdev = rbo->rdev;
+ if (bo->mem.mem_type == TTM_PL_VRAM) {
+ size = bo->mem.num_pages << PAGE_SHIFT;
+ offset = bo->mem.mm_node->start << PAGE_SHIFT;
+ if ((offset + size) > rdev->mc.visible_vram_size) {
+ /* hurrah the memory is not visible ! */
+ radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM);
+ rbo->placement.lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT;
+ r = ttm_bo_validate(bo, &rbo->placement, false, true, false);
+ if (unlikely(r != 0))
+ return r;
+ offset = bo->mem.mm_node->start << PAGE_SHIFT;
+ /* this should not happen */
+ if ((offset + size) > rdev->mc.visible_vram_size)
+ return -EINVAL;
+ }
+ }
+ return 0;
}
