[PATCH 13/14] drm/amdgpu: Check memory ranges for valid xcp mode

[Alex Deucher]

From: Lijo Lazar <lijo.la...@amd.com>

Check the memory ranges available to the device also for deciding a
valid partition mode. Only select combinations are valid for a
particular mode.

Signed-off-by: Lijo Lazar <lijo.la...@amd.com>
Reviewed-by: Le Ma <le...@amd.com>
Reviewed-by: Philip Yang <philip.y...@amd.com>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
---
 .../drm/amd/amdgpu/aqua_vanjaram_reg_init.c   | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c 
b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
index 004400fb89b0..7469de3fd6fe 100644
--- a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
+++ b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram_reg_init.c
@@ -238,21 +238,28 @@ int __aqua_vanjaram_get_xcp_ip_info(struct amdgpu_xcp_mgr 
*xcp_mgr, int xcp_id,
 static bool __aqua_vanjaram_is_valid_mode(struct amdgpu_xcp_mgr *xcp_mgr,
                                          enum amdgpu_gfx_partition mode)
 {
+       struct amdgpu_device *adev = xcp_mgr->adev;
        int num_xcc, num_xccs_per_xcp;
 
-       num_xcc = NUM_XCC(xcp_mgr->adev->gfx.xcc_mask);
+       num_xcc = NUM_XCC(adev->gfx.xcc_mask);
        switch (mode) {
        case AMDGPU_SPX_PARTITION_MODE:
-               return num_xcc > 0;
+               return adev->gmc.num_mem_partitions == 1 && num_xcc > 0;
        case AMDGPU_DPX_PARTITION_MODE:
-               return (num_xcc % 4) == 0;
+               return adev->gmc.num_mem_partitions != 8 && (num_xcc % 4) == 0;
        case AMDGPU_TPX_PARTITION_MODE:
-               return (num_xcc % 3) == 0;
+               return (adev->gmc.num_mem_partitions == 1 ||
+                       adev->gmc.num_mem_partitions == 3) &&
+                      ((num_xcc % 3) == 0);
        case AMDGPU_QPX_PARTITION_MODE:
                num_xccs_per_xcp = num_xcc / 4;
-               return (num_xccs_per_xcp >= 2);
+               return (adev->gmc.num_mem_partitions == 1 ||
+                       adev->gmc.num_mem_partitions == 4) &&
+                      (num_xccs_per_xcp >= 2);
        case AMDGPU_CPX_PARTITION_MODE:
-               return (num_xcc > 1);
+               return (num_xcc > 1) &&
+                      (adev->gmc.num_mem_partitions == 1 ||
+                       adev->gmc.num_mem_partitions == num_xcc);
        default:
                return false;
        }
-- 
2.40.1