drm/amdgpu: split athub clock gating from mmhub

Untie the bind of get/set athub CG state from mmhub, for cosmetic fix and Asic
not using mmhub 1.0. Besides, also fix wrong athub CG state in amdgpu_pm_info.
Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/Makefile

@@ -154,6 +154,7 @@ amdgpu-y += \
 
 # add ATHUB block
 amdgpu-y += \
+	athub_v1_0.o \
 	athub_v2_0.o
 
 # add amdkfd interfaces

drivers/gpu/drm/amd/amdgpu/athub_v1_0.c

+/*
+ * Copyright 2016 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#include "amdgpu.h"
+#include "athub_v1_0.h"
+
+#include "athub/athub_1_0_offset.h"
+#include "athub/athub_1_0_sh_mask.h"
+#include "vega10_enum.h"
+
+#include "soc15_common.h"
+
+static void athub_update_medium_grain_clock_gating(struct amdgpu_device *adev,
+						   bool enable)
+{
+	uint32_t def, data;
+
+	def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
+
+	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG))
+		data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK;
+	else
+		data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK;
+
+	if (def != data)
+		WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data);
+}
+
+static void athub_update_medium_grain_light_sleep(struct amdgpu_device *adev,
+						  bool enable)
+{
+	uint32_t def, data;
+
+	def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
+
+	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS) &&
+	    (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
+		data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
+	else
+		data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
+
+	if(def != data)
+		WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data);
+}
+
+int athub_v1_0_set_clockgating(struct amdgpu_device *adev,
+			       enum amd_clockgating_state state)
+{
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
+	switch (adev->asic_type) {
+	case CHIP_VEGA10:
+	case CHIP_VEGA12:
+	case CHIP_VEGA20:
+	case CHIP_RAVEN:
+		athub_update_medium_grain_clock_gating(adev,
+				state == AMD_CG_STATE_GATE ? true : false);
+		athub_update_medium_grain_light_sleep(adev,
+				state == AMD_CG_STATE_GATE ? true : false);
+		break;
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+void athub_v1_0_get_clockgating(struct amdgpu_device *adev, u32 *flags)
+{
+	int data;
+
+	if (amdgpu_sriov_vf(adev))
+		*flags = 0;
+
+	/* AMD_CG_SUPPORT_ATHUB_MGCG */
+	data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
+	if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK)
+		*flags |= AMD_CG_SUPPORT_ATHUB_MGCG;
+
+	/* AMD_CG_SUPPORT_ATHUB_LS */
+	if (data & ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK)
+		*flags |= AMD_CG_SUPPORT_ATHUB_LS;
+}

drivers/gpu/drm/amd/amdgpu/athub_v1_0.h

+/*
+ * Copyright 2016 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+#ifndef __ATHUB_V1_0_H__
+#define __ATHUB_V1_0_H__
+
+int athub_v1_0_set_clockgating(struct amdgpu_device *adev,
+			       enum amd_clockgating_state state);
+void athub_v1_0_get_clockgating(struct amdgpu_device *adev, u32 *flags);
+
+#endif

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

@@ -47,6 +47,7 @@
 
 #include "gfxhub_v1_0.h"
 #include "mmhub_v1_0.h"
+#include "athub_v1_0.h"
 #include "gfxhub_v1_1.h"
 #include "mmhub_v9_4.h"
 #include "umc_v6_1.h"
@@ -1470,7 +1471,11 @@ static int gmc_v9_0_set_clockgating_state(void *handle,
 	if (adev->asic_type == CHIP_ARCTURUS)
 		return 0;
 
-	return mmhub_v1_0_set_clockgating(adev, state);
+	mmhub_v1_0_set_clockgating(adev, state);
+
+	athub_v1_0_set_clockgating(adev, state);
+
+	return 0;
 }
 
 static void gmc_v9_0_get_clockgating_state(void *handle, u32 *flags)
@@ -1481,6 +1486,8 @@ static void gmc_v9_0_get_clockgating_state(void *handle, u32 *flags)
 		return;
 
 	mmhub_v1_0_get_clockgating(adev, flags);
+
+	athub_v1_0_get_clockgating(adev, flags);
 }
 
 static int gmc_v9_0_set_powergating_state(void *handle,

drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c

@@ -26,8 +26,6 @@
 #include "mmhub/mmhub_1_0_offset.h"
 #include "mmhub/mmhub_1_0_sh_mask.h"
 #include "mmhub/mmhub_1_0_default.h"
-#include "athub/athub_1_0_offset.h"
-#include "athub/athub_1_0_sh_mask.h"
 #include "vega10_enum.h"
 
 #include "soc15_common.h"
@@ -491,22 +489,6 @@ static void mmhub_v1_0_update_medium_grain_clock_gating(struct amdgpu_device *ad
 		WREG32_SOC15(MMHUB, 0, mmDAGB1_CNTL_MISC2, data2);
 }
 
-static void athub_update_medium_grain_clock_gating(struct amdgpu_device *adev,
-						   bool enable)
-{
-	uint32_t def, data;
-
-	def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
-
-	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_MGCG))
-		data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK;
-	else
-		data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK;
-
-	if (def != data)
-		WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data);
-}
-
 static void mmhub_v1_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
 						       bool enable)
 {
@@ -523,23 +505,6 @@ static void mmhub_v1_0_update_medium_grain_light_sleep(struct amdgpu_device *ade
 		WREG32_SOC15(MMHUB, 0, mmATC_L2_MISC_CG, data);
 }
 
-static void athub_update_medium_grain_light_sleep(struct amdgpu_device *adev,
-						  bool enable)
-{
-	uint32_t def, data;
-
-	def = data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
-
-	if (enable && (adev->cg_flags & AMD_CG_SUPPORT_MC_LS) &&
-	    (adev->cg_flags & AMD_CG_SUPPORT_HDP_LS))
-		data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
-	else
-		data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
-
-	if(def != data)
-		WREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL, data);
-}
-
 int mmhub_v1_0_set_clockgating(struct amdgpu_device *adev,
 			       enum amd_clockgating_state state)
 {
@@ -553,12 +518,8 @@ int mmhub_v1_0_set_clockgating(struct amdgpu_device *adev,
 	case CHIP_RAVEN:
 		mmhub_v1_0_update_medium_grain_clock_gating(adev,
 				state == AMD_CG_STATE_GATE ? true : false);
-		athub_update_medium_grain_clock_gating(adev,
-				state == AMD_CG_STATE_GATE ? true : false);
 		mmhub_v1_0_update_medium_grain_light_sleep(adev,
 				state == AMD_CG_STATE_GATE ? true : false);
-		athub_update_medium_grain_light_sleep(adev,
-				state == AMD_CG_STATE_GATE ? true : false);
 		break;
 	default:
 		break;
@@ -569,18 +530,26 @@ int mmhub_v1_0_set_clockgating(struct amdgpu_device *adev,
 
 void mmhub_v1_0_get_clockgating(struct amdgpu_device *adev, u32 *flags)
 {
-	int data;
+	int data, data1;
 
 	if (amdgpu_sriov_vf(adev))
 		*flags = 0;
 
+	data = RREG32_SOC15(MMHUB, 0, mmATC_L2_MISC_CG);
+
+	data1 = RREG32_SOC15(MMHUB, 0, mmDAGB0_CNTL_MISC2);
+
 	/* AMD_CG_SUPPORT_MC_MGCG */
-	data = RREG32_SOC15(ATHUB, 0, mmATHUB_MISC_CNTL);
-	if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK)
+	if ((data & ATC_L2_MISC_CG__ENABLE_MASK) &&
+	    !(data1 & (DAGB0_CNTL_MISC2__DISABLE_WRREQ_CG_MASK |
+		       DAGB0_CNTL_MISC2__DISABLE_WRRET_CG_MASK |
+		       DAGB0_CNTL_MISC2__DISABLE_RDREQ_CG_MASK |
+		       DAGB0_CNTL_MISC2__DISABLE_RDRET_CG_MASK |
+		       DAGB0_CNTL_MISC2__DISABLE_TLBWR_CG_MASK |
+		       DAGB0_CNTL_MISC2__DISABLE_TLBRD_CG_MASK)))
 		*flags |= AMD_CG_SUPPORT_MC_MGCG;
 
 	/* AMD_CG_SUPPORT_MC_LS */
-	data = RREG32_SOC15(MMHUB, 0, mmATC_L2_MISC_CG);
 	if (data & ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK)
 		*flags |= AMD_CG_SUPPORT_MC_LS;
 }