drm/amdgpu: return tcc_disabled_mask to userspace

UMDs need this for correct programming of harvested chips.

Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 9f2f54e..2ef7230 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -82,9 +82,10 @@
  * - 3.32.0 - Add syncobj timeline support to AMDGPU_CS.
  * - 3.33.0 - Fixes for GDS ENOMEM failures in AMDGPU_CS.
  * - 3.34.0 - Non-DC can flip correctly between buffers with different pitches
+ * - 3.35.0 - Add drm_amdgpu_info_device::tcc_disabled_mask
  */
 #define KMS_DRIVER_MAJOR       3
-#define KMS_DRIVER_MINOR       34
+#define KMS_DRIVER_MINOR       35
 #define KMS_DRIVER_PATCHLEVEL  0
 
 #define AMDGPU_MAX_TIMEOUT_PARAM_LENTH 256

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
index c5179a8..35eff9e 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h
@@ -165,6 +165,7 @@ struct amdgpu_gfx_config {
        uint32_t num_sc_per_sh;
        uint32_t num_packer_per_sc;
        uint32_t pa_sc_tile_steering_override;
+       uint64_t tcc_disabled_mask;
 };
 
 struct amdgpu_cu_info {

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 7f4e000..6746967 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -782,6 +782,8 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
                        dev_info.pa_sc_tile_steering_override =
                                adev->gfx.config.pa_sc_tile_steering_override;
 
+               dev_info.tcc_disabled_mask = adev->gfx.config.tcc_disabled_mask;
+
                return copy_to_user(out, &dev_info,
                                    min((size_t)size, sizeof(dev_info))) ? -EFAULT : 0;
        }

diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index cfc0952..0fcea94 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -1691,6 +1691,17 @@ static void gfx_v10_0_tcp_harvest(struct amdgpu_device *adev)
        }
 }
 
+static void gfx_v10_0_get_tcc_info(struct amdgpu_device *adev)
+{
+       /* TCCs are global (not instanced). */
+       uint32_t tcc_disable = RREG32_SOC15(GC, 0, mmCGTS_TCC_DISABLE) |
+                              RREG32_SOC15(GC, 0, mmCGTS_USER_TCC_DISABLE);
+
+       adev->gfx.config.tcc_disabled_mask =
+               REG_GET_FIELD(tcc_disable, CGTS_TCC_DISABLE, TCC_DISABLE) |
+               (REG_GET_FIELD(tcc_disable, CGTS_TCC_DISABLE, HI_TCC_DISABLE) << 16);
+}
+
 static void gfx_v10_0_constants_init(struct amdgpu_device *adev)
 {
        u32 tmp;
@@ -1702,6 +1713,7 @@ static void gfx_v10_0_constants_init(struct amdgpu_device *adev)
 
        gfx_v10_0_setup_rb(adev);
        gfx_v10_0_get_cu_info(adev, &adev->gfx.cu_info);
+       gfx_v10_0_get_tcc_info(adev);
        adev->gfx.config.pa_sc_tile_steering_override =
                gfx_v10_0_init_pa_sc_tile_steering_override(adev);
 

diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 640e535..bbdad86 100644 (file)
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -1005,6 +1005,8 @@ struct drm_amdgpu_info_device {
        __u64 high_va_max;
        /* gfx10 pa_sc_tile_steering_override */
        __u32 pa_sc_tile_steering_override;
+       /* disabled TCCs */
+       __u64 tcc_disabled_mask;
 };
 
 struct drm_amdgpu_info_hw_ip {