drm/amdgpu/gfx8: set USER_SHADER_ARRAY_CONFIG based on disable_cu parameter

v2: do not overwrite register when bitmap is zero

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 0b8137ca1402ee49df6597a435af732db805d7ae..17b4384dfd6c1a0985259ac8a45ebd73858acf49 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -6465,6 +6465,20 @@ static void gfx_v8_0_set_gds_init(struct amdgpu_device *adev)
        }
 }
 
+static void gfx_v8_0_set_user_cu_inactive_bitmap(struct amdgpu_device *adev,
+                                                u32 bitmap)
+{
+       u32 data;
+
+       if (!bitmap)
+               return;
+
+       data = bitmap << GC_USER_SHADER_ARRAY_CONFIG__INACTIVE_CUS__SHIFT;
+       data &= GC_USER_SHADER_ARRAY_CONFIG__INACTIVE_CUS_MASK;
+
+       WREG32(mmGC_USER_SHADER_ARRAY_CONFIG, data);
+}
+
 static u32 gfx_v8_0_get_cu_active_bitmap(struct amdgpu_device *adev)
 {
        u32 data, mask;
@@ -6485,9 +6499,12 @@ static void gfx_v8_0_get_cu_info(struct amdgpu_device *adev)
        int i, j, k, counter, active_cu_number = 0;
        u32 mask, bitmap, ao_bitmap, ao_cu_mask = 0;
        struct amdgpu_cu_info *cu_info = &adev->gfx.cu_info;
+       unsigned disable_masks[4 * 2];
 
        memset(cu_info, 0, sizeof(*cu_info));
 
+       amdgpu_gfx_parse_disable_cu(disable_masks, 4, 2);
+
        mutex_lock(&adev->grbm_idx_mutex);
        for (i = 0; i < adev->gfx.config.max_shader_engines; i++) {
                for (j = 0; j < adev->gfx.config.max_sh_per_se; j++) {
@@ -6495,6 +6512,9 @@ static void gfx_v8_0_get_cu_info(struct amdgpu_device *adev)
                        ao_bitmap = 0;
                        counter = 0;
                        gfx_v8_0_select_se_sh(adev, i, j);
+                       if (i < 4 && j < 2)
+                               gfx_v8_0_set_user_cu_inactive_bitmap(
+                                       adev, disable_masks[i * 2 + j]);
                        bitmap = gfx_v8_0_get_cu_active_bitmap(adev);
                        cu_info->bitmap[i][j] = bitmap;