drm/amdgpu: add gfx shadow callback

To provide IP specific shadow sizes.  UMDs will use
this to query the kernel driver for the size of the
shadow buffers.

v2: make callback return an int (Alex)
v3: drop GDS (Alex)

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index 6c5f58a..f1a2ce7 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -233,6 +233,13 @@ struct amdgpu_gfx_ras {
                                                struct amdgpu_iv_entry *entry);
 };
 
+struct amdgpu_gfx_shadow_info {
+       u32 shadow_size;
+       u32 shadow_alignment;
+       u32 csa_size;
+       u32 csa_alignment;
+};
+
 struct amdgpu_gfx_funcs {
        /* get the gpu clock counter */
        uint64_t (*get_gpu_clock_counter)(struct amdgpu_device *adev);
@@ -250,6 +257,8 @@ struct amdgpu_gfx_funcs {
                                 u32 queue, u32 vmid);
        void (*init_spm_golden)(struct amdgpu_device *adev);
        void (*update_perfmon_mgcg)(struct amdgpu_device *adev, bool enable);
+       int (*get_gfx_shadow_info)(struct amdgpu_device *adev,
+                                  struct amdgpu_gfx_shadow_info *shadow_info);
 };
 
 struct sq_work {
@@ -391,6 +400,7 @@ struct amdgpu_gfx {
 #define amdgpu_gfx_select_se_sh(adev, se, sh, instance, xcc_id) ((adev)->gfx.funcs->select_se_sh((adev), (se), (sh), (instance), (xcc_id)))
 #define amdgpu_gfx_select_me_pipe_q(adev, me, pipe, q, vmid) (adev)->gfx.funcs->select_me_pipe_q((adev), (me), (pipe), (q), (vmid))
 #define amdgpu_gfx_init_spm_golden(adev) (adev)->gfx.funcs->init_spm_golden((adev))
+#define amdgpu_gfx_get_gfx_shadow_info(adev, si) ((adev)->gfx.funcs->get_gfx_shadow_info((adev), (si)))
 
 /**
  * amdgpu_gfx_create_bitmask - create a bitmask