[PATCH 2/2] drm/amdgpu: Support query ecc cap for aqua_vanjaram

[Hawking Zhang]

Driver queries umc_info v4_0 to identify ecc cap
for aqua_vanjaram

Signed-off-by: Hawking Zhang <hawking.zh...@amd.com>
Reviewed-by: Candice Li <candice...@amd.com>
---
 .../gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c   | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
index 835980e94b9e..fb2681dd6b33 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c
@@ -217,6 +217,7 @@ union umc_info {
        struct atom_umc_info_v3_1 v31;
        struct atom_umc_info_v3_2 v32;
        struct atom_umc_info_v3_3 v33;
+       struct atom_umc_info_v4_0 v40;
 };
 
 union vram_info {
@@ -508,9 +509,8 @@ bool amdgpu_atomfirmware_mem_ecc_supported(struct 
amdgpu_device *adev)
 
        if (amdgpu_atom_parse_data_header(mode_info->atom_context,
                                index, &size, &frev, &crev, &data_offset)) {
+               umc_info = (union umc_info *)(mode_info->atom_context->bios + 
data_offset);
                if (frev == 3) {
-                       umc_info = (union umc_info *)
-                               (mode_info->atom_context->bios + data_offset);
                        switch (crev) {
                        case 1:
                                umc_config = 
le32_to_cpu(umc_info->v31.umc_config);
@@ -533,6 +533,20 @@ bool amdgpu_atomfirmware_mem_ecc_supported(struct 
amdgpu_device *adev)
                                /* unsupported crev */
                                return false;
                        }
+               } else if (frev == 4) {
+                       switch (crev) {
+                       case 0:
+                               umc_config1 = 
le32_to_cpu(umc_info->v40.umc_config1);
+                               ecc_default_enabled =
+                                       (umc_config1 & 
UMC_CONFIG1__ENABLE_ECC_CAPABLE) ? true : false;
+                               break;
+                       default:
+                               /* unsupported crev */
+                               return false;
+                       }
+               } else {
+                       /* unsupported frev */
+                       return false;
                }
        }
 
-- 
2.17.1