winsys/radeon: add buffer_get_reloc_offset

Really fix the bug that was supposed to be fixed by commits 3e7cced4b and
a48bf02d: even when virtual addresses are used, the legacy relocation-based
method with offsets relative to the kernel's buffer object are used for
video submissions.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97969
Reviewed-by: Christian König <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
index 5818006cc2a..a15d559b015 100644
--- a/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
+++ b/src/gallium/winsys/radeon/drm/radeon_drm_bo.c
@@ -1339,6 +1339,16 @@ static uint64_t radeon_winsys_bo_va(struct pb_buffer *buf)
     return ((struct radeon_bo*)buf)->va;
 }
 
+static unsigned radeon_winsys_bo_get_reloc_offset(struct pb_buffer *buf)
+{
+    struct radeon_bo *bo = radeon_bo(buf);
+
+    if (bo->handle)
+        return 0;
+
+    return bo->va - bo->u.slab.real->va;
+}
+
 void radeon_drm_bo_init_functions(struct radeon_drm_winsys *ws)
 {
     ws->base.buffer_set_metadata = radeon_bo_set_metadata;
@@ -1352,5 +1362,6 @@ void radeon_drm_bo_init_functions(struct radeon_drm_winsys *ws)
     ws->base.buffer_is_user_ptr = radeon_winsys_bo_is_user_ptr;
     ws->base.buffer_get_handle = radeon_winsys_bo_get_handle;
     ws->base.buffer_get_virtual_address = radeon_winsys_bo_va;
+    ws->base.buffer_get_reloc_offset = radeon_winsys_bo_get_reloc_offset;
     ws->base.buffer_get_initial_domain = radeon_bo_get_initial_domain;
 }