drm/amdgpu: add a new set of rlc function pointers

Different asics tend to have different ways to interact
with the RLC.  This just covers enter/exit of safe mode
for updating CG and PG state, but could be extended to
cover other RLC operations in the future if necessary.

Acked-by: Tom St Denis <tom.stdenis@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index a7a53ac5f413..4a2b9a37271d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -1037,6 +1037,11 @@ void amdgpu_bo_list_free(struct amdgpu_bo_list *list);
  */
 #include "clearstate_defs.h"
 
+struct amdgpu_rlc_funcs {
+        void (*enter_safe_mode)(struct amdgpu_device *adev);
+        void (*exit_safe_mode)(struct amdgpu_device *adev);
+};
+
 struct amdgpu_rlc {
         /* for power gating */
         struct amdgpu_bo        *save_restore_obj;
@@ -1055,6 +1060,10 @@ struct amdgpu_rlc {
         uint64_t                cp_table_gpu_addr;
         volatile uint32_t       *cp_table_ptr;
         u32                     cp_table_size;
+
+        /* safe mode for updating CG/PG state */
+        bool in_safe_mode;
+        const struct amdgpu_rlc_funcs *funcs;
 };
 
 struct amdgpu_mec {