gpu: nvgpu: gk20a: cde: Add base_post_divide param

This patch adds a parameter to communicate the compression bit
backing store address we write to the hardware.

Change-Id: Ibc0e3d8304e893ddf15b4e03b405c7d85a73e95b
Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Reviewed-on: http://git-master/r/454510
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index df64d2ca..da19f83e 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -172,6 +172,10 @@ struct compbit_store_desc {
         struct sg_table *sgt;
         size_t size;
         u64 base_iova;
+
+        /* The value that is written to the hardware. This depends on
+         * on the number of ltcs and is not an address. */
+        u64 base_hw;
 };
 
 struct gk20a_buffer_state {