[PATCH] drm/amd/pm: enable BACO support for SMU 13.0.0

[Alex Deucher]

From: Evan Quan <evan.quan at amd.com>

Enable SMU 13.0.0 BACO support.

Signed-off-by: Evan Quan <evan.quan at amd.com>
Reviewed-by: Likun Gao <Likun.Gao at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h  | 11 +++
 .../gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c    | 75 +++++++++++++++++++
 .../drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c  |  7 ++
 3 files changed, 93 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h b/drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h
index 4a52ab737dd5..013be82db1f3 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/smu_v13_0.h
@@ -282,5 +282,16 @@ int smu_v13_0_deep_sleep_control(struct smu_context *smu,
 int smu_v13_0_gfx_ulv_control(struct smu_context *smu,
 			      bool enablement);
 
+bool smu_v13_0_baco_is_support(struct smu_context *smu);
+
+enum smu_baco_state smu_v13_0_baco_get_state(struct smu_context *smu);
+
+int smu_v13_0_baco_set_state(struct smu_context *smu,
+			     enum smu_baco_state state);
+
+int smu_v13_0_baco_enter(struct smu_context *smu);
+
+int smu_v13_0_baco_exit(struct smu_context *smu);
+
 #endif
 #endif
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
index 2c57bc573ee8..d73deb3e596f 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
@@ -2206,3 +2206,78 @@ int smu_v13_0_gfx_ulv_control(struct smu_context *smu,
 
 	return ret;
 }
+
+bool smu_v13_0_baco_is_support(struct smu_context *smu)
+{
+	struct smu_baco_context *smu_baco = &smu->smu_baco;
+
+	if (amdgpu_sriov_vf(smu->adev) ||
+	    !smu_baco->platform_support)
+		return false;
+
+	if (smu_cmn_feature_is_supported(smu, SMU_FEATURE_BACO_BIT) &&
+	    !smu_cmn_feature_is_enabled(smu, SMU_FEATURE_BACO_BIT))
+		return false;
+
+	return true;
+}
+
+enum smu_baco_state smu_v13_0_baco_get_state(struct smu_context *smu)
+{
+	struct smu_baco_context *smu_baco = &smu->smu_baco;
+
+	return smu_baco->state;
+}
+
+int smu_v13_0_baco_set_state(struct smu_context *smu,
+			     enum smu_baco_state state)
+{
+	struct smu_baco_context *smu_baco = &smu->smu_baco;
+	struct amdgpu_device *adev = smu->adev;
+	int ret = 0;
+
+	if (smu_v13_0_baco_get_state(smu) == state)
+		return 0;
+
+	if (state == SMU_BACO_STATE_ENTER) {
+		ret = smu_cmn_send_smc_msg_with_param(smu,
+						      SMU_MSG_EnterBaco,
+						      0,
+						      NULL);
+	} else {
+		ret = smu_cmn_send_smc_msg(smu,
+					   SMU_MSG_ExitBaco,
+					   NULL);
+		if (ret)
+			return ret;
+
+		/* clear vbios scratch 6 and 7 for coming asic reinit */
+		WREG32(adev->bios_scratch_reg_offset + 6, 0);
+		WREG32(adev->bios_scratch_reg_offset + 7, 0);
+	}
+
+	if (!ret)
+		smu_baco->state = state;
+
+	return ret;
+}
+
+int smu_v13_0_baco_enter(struct smu_context *smu)
+{
+	int ret = 0;
+
+	ret = smu_v13_0_baco_set_state(smu,
+				       SMU_BACO_STATE_ENTER);
+	if (ret)
+		return ret;
+
+	msleep(10);
+
+	return ret;
+}
+
+int smu_v13_0_baco_exit(struct smu_context *smu)
+{
+	return smu_v13_0_baco_set_state(smu,
+					SMU_BACO_STATE_EXIT);
+}
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
index 71312ed26fb9..44da7e06a012 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
@@ -95,6 +95,7 @@ static struct cmn2asic_msg_mapping smu_v13_0_0_message_map[SMU_MSG_MAX_COUNT] =
 	MSG_MAP(UseDefaultPPTable,		PPSMC_MSG_UseDefaultPPTable,           0),
 	MSG_MAP(RunDcBtc,			PPSMC_MSG_RunDcBtc,                    0),
 	MSG_MAP(EnterBaco,			PPSMC_MSG_EnterBaco,                   0),
+	MSG_MAP(ExitBaco,			PPSMC_MSG_ExitBaco,                    0),
 	MSG_MAP(SetSoftMinByFreq,		PPSMC_MSG_SetSoftMinByFreq,            1),
 	MSG_MAP(SetSoftMaxByFreq,		PPSMC_MSG_SetSoftMaxByFreq,            1),
 	MSG_MAP(SetHardMinByFreq,		PPSMC_MSG_SetHardMinByFreq,            1),
@@ -150,6 +151,7 @@ static struct cmn2asic_mapping smu_v13_0_0_feature_mask_map[SMU_FEATURE_COUNT] =
 	[SMU_FEATURE_DS_MP0CLK_BIT] = {1, FEATURE_SOC_MPCLK_DS_BIT},
 	[SMU_FEATURE_DS_MP1CLK_BIT] = {1, FEATURE_BACO_MPCLK_DS_BIT},
 	[SMU_FEATURE_GFX_ULV_BIT] = {1, FEATURE_GFX_ULV_BIT},
+	[SMU_FEATURE_BACO_BIT] = {1, FEATURE_BACO_BIT},
 };
 
 static struct cmn2asic_mapping smu_v13_0_0_table_map[SMU_TABLE_COUNT] = {
@@ -1595,6 +1597,11 @@ static const struct pptable_funcs smu_v13_0_0_ppt_funcs = {
 	.set_tool_table_location = smu_v13_0_set_tool_table_location,
 	.deep_sleep_control = smu_v13_0_deep_sleep_control,
 	.gfx_ulv_control = smu_v13_0_gfx_ulv_control,
+	.baco_is_support = smu_v13_0_baco_is_support,
+	.baco_get_state = smu_v13_0_baco_get_state,
+	.baco_set_state = smu_v13_0_baco_set_state,
+	.baco_enter = smu_v13_0_baco_enter,
+	.baco_exit = smu_v13_0_baco_exit,
 };
 
 void smu_v13_0_0_set_ppt_funcs(struct smu_context *smu)
-- 
2.35.1