gpu: nvgpu: Implement compbits padding for mapping

Implement NVGPU_AS_MAP_BUFFER_FLAGS_MAPPABLE_COMPBITS, which adds
extra alignment to compbits allocation for safe compbits mapping.

Bug 200077571

Change-Id: I3a74ebb81412e4e1e69501debeb9ef4e2056ef1a
Signed-off-by: Sami Kiminki <skiminki@nvidia.com>
Reviewed-on: http://git-master/r/730763
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/740693
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index 895e52ff..8d1dba66 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -140,6 +140,8 @@ enum gmmu_pgsz_gk20a {
 struct gk20a_comptags {
         u32 offset;
         u32 lines;
+        u32 allocated_lines;
+        bool user_mappable;
 };
 
 struct gk20a_mm_entry {
@@ -190,6 +192,9 @@ struct mapped_buffer_node {
         u32 pgsz_idx;
         u32 ctag_offset;
         u32 ctag_lines;
+        u32 ctag_allocated_lines;
+        bool ctags_mappable;
+
         u32 flags;
         u32 kind;
         bool va_allocated;