drm/amd/swsmu: add MALL init support workaround for smu_v14_0_1

[Why]
SMU firmware has not supported MALL PG.

[How]
Disable MALL PG and make it always on until SMU firmware is ready.
Signed-off-by: Li Ma <li.ma@amd.com>
Reviewed-by: Tim Huang <Tim.Huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -325,6 +325,18 @@ static int smu_dpm_set_umsch_mm_enable(struct smu_context *smu,
 	return ret;
 }
 
+static int smu_set_mall_enable(struct smu_context *smu)
+{
+	int ret = 0;
+
+	if (!smu->ppt_funcs->set_mall_enable)
+		return 0;
+
+	ret = smu->ppt_funcs->set_mall_enable(smu);
+
+	return ret;
+}
+
 /**
  * smu_dpm_set_power_gate - power gate/ungate the specific IP block
  *
@@ -1804,6 +1816,7 @@ static int smu_hw_init(void *handle)
 		smu_dpm_set_jpeg_enable(smu, true);
 		smu_dpm_set_vpe_enable(smu, true);
 		smu_dpm_set_umsch_mm_enable(smu, true);
+		smu_set_mall_enable(smu);
 		smu_set_gfx_cgpg(smu, true);
 	}
 

drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h

@@ -1408,6 +1408,11 @@ struct pptable_funcs {
 	 */
 	int (*dpm_set_umsch_mm_enable)(struct smu_context *smu, bool enable);
 
+	/**
+	 * @set_mall_enable: Init MALL power gating control.
+	 */
+	int (*set_mall_enable)(struct smu_context *smu);
+
 	/**
 	 * @notify_rlc_state: Notify RLC power state to SMU.
 	 */

drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v14_0_0_ppsmc.h

@@ -106,8 +106,8 @@
 #define PPSMC_MSG_DisableLSdma                  0x35 ///< Disable LSDMA
 #define PPSMC_MSG_SetSoftMaxVpe                 0x36 ///<
 #define PPSMC_MSG_SetSoftMinVpe                 0x37 ///<
-#define PPSMC_MSG_AllocMALLCache                0x38 ///< Allocating MALL Cache
-#define PPSMC_MSG_ReleaseMALLCache              0x39 ///< Releasing MALL Cache
+#define PPSMC_MSG_MALLPowerController           0x38 ///< Set MALL control
+#define PPSMC_MSG_MALLPowerState                0x39 ///< Enter/Exit MALL PG
 #define PPSMC_Message_Count                     0x3A ///< Total number of PPSMC messages
 /** @}*/
 

drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h

@@ -273,7 +273,9 @@
 	__SMU_DUMMY_MAP(GetMetricsVersion), \
 	__SMU_DUMMY_MAP(EnableUCLKShadow), \
 	__SMU_DUMMY_MAP(RmaDueToBadPageThreshold),\
-	__SMU_DUMMY_MAP(SelectPstatePolicy),
+	__SMU_DUMMY_MAP(SelectPstatePolicy), \
+	__SMU_DUMMY_MAP(MALLPowerController), \
+	__SMU_DUMMY_MAP(MALLPowerState),
 
 #undef __SMU_DUMMY_MAP
 #define __SMU_DUMMY_MAP(type)	SMU_MSG_##type

drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_0_ppt.c

@@ -52,6 +52,19 @@
 #define mmMP1_SMN_C2PMSG_90			0x029a
 #define mmMP1_SMN_C2PMSG_90_BASE_IDX		    0
 
+/* MALLPowerController message arguments (Defines for the Cache mode control) */
+#define SMU_MALL_PMFW_CONTROL 0
+#define SMU_MALL_DRIVER_CONTROL 1
+
+/*
+ * MALLPowerState message arguments
+ * (Defines for the Allocate/Release Cache mode if in driver mode)
+ */
+#define SMU_MALL_EXIT_PG 0
+#define SMU_MALL_ENTER_PG 1
+
+#define SMU_MALL_PG_CONFIG_DEFAULT SMU_MALL_PG_CONFIG_DRIVER_CONTROL_ALWAYS_ON
+
 #define FEATURE_MASK(feature) (1ULL << feature)
 #define SMC_DPM_FEATURE ( \
 	FEATURE_MASK(FEATURE_CCLK_DPM_BIT) | \
@@ -66,6 +79,12 @@
 	FEATURE_MASK(FEATURE_GFX_DPM_BIT)	| \
 	FEATURE_MASK(FEATURE_VPE_DPM_BIT))
 
+enum smu_mall_pg_config {
+	SMU_MALL_PG_CONFIG_PMFW_CONTROL = 0,
+	SMU_MALL_PG_CONFIG_DRIVER_CONTROL_ALWAYS_ON = 1,
+	SMU_MALL_PG_CONFIG_DRIVER_CONTROL_ALWAYS_OFF = 2,
+};
+
 static struct cmn2asic_msg_mapping smu_v14_0_0_message_map[SMU_MSG_MAX_COUNT] = {
 	MSG_MAP(TestMessage,                    PPSMC_MSG_TestMessage,				1),
 	MSG_MAP(GetSmuVersion,                  PPSMC_MSG_GetPmfwVersion,			1),
@@ -113,6 +132,8 @@ static struct cmn2asic_msg_mapping smu_v14_0_0_message_map[SMU_MSG_MAX_COUNT] =
 	MSG_MAP(PowerDownUmsch,                 PPSMC_MSG_PowerDownUmsch,			1),
 	MSG_MAP(SetSoftMaxVpe,                  PPSMC_MSG_SetSoftMaxVpe,			1),
 	MSG_MAP(SetSoftMinVpe,                  PPSMC_MSG_SetSoftMinVpe,			1),
+	MSG_MAP(MALLPowerController,            PPSMC_MSG_MALLPowerController,		1),
+	MSG_MAP(MALLPowerState,                 PPSMC_MSG_MALLPowerState,			1),
 };
 
 static struct cmn2asic_mapping smu_v14_0_0_feature_mask_map[SMU_FEATURE_COUNT] = {
@@ -1423,6 +1444,57 @@ static int smu_v14_0_common_get_dpm_table(struct smu_context *smu, struct dpm_cl
 	return 0;
 }
 
+static int smu_v14_0_1_init_mall_power_gating(struct smu_context *smu, enum smu_mall_pg_config pg_config)
+{
+	struct amdgpu_device *adev = smu->adev;
+	int ret = 0;
+
+	if (pg_config == SMU_MALL_PG_CONFIG_PMFW_CONTROL) {
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_MALLPowerController,
+								SMU_MALL_PMFW_CONTROL, NULL);
+		if (ret) {
+			dev_err(adev->dev, "Init MALL PMFW CONTROL Failure\n");
+			return ret;
+		}
+	} else {
+		ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_MALLPowerController,
+								SMU_MALL_DRIVER_CONTROL, NULL);
+		if (ret) {
+			dev_err(adev->dev, "Init MALL Driver CONTROL Failure\n");
+			return ret;
+		}
+
+		if (pg_config == SMU_MALL_PG_CONFIG_DRIVER_CONTROL_ALWAYS_ON) {
+			ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_MALLPowerState,
+									SMU_MALL_EXIT_PG, NULL);
+			if (ret) {
+				dev_err(adev->dev, "EXIT MALL PG Failure\n");
+				return ret;
+			}
+		} else if (pg_config == SMU_MALL_PG_CONFIG_DRIVER_CONTROL_ALWAYS_OFF) {
+			ret = smu_cmn_send_smc_msg_with_param(smu, SMU_MSG_MALLPowerState,
+									SMU_MALL_ENTER_PG, NULL);
+			if (ret) {
+				dev_err(adev->dev, "Enter MALL PG Failure\n");
+				return ret;
+			}
+		}
+	}
+
+	return ret;
+}
+
+static int smu_v14_0_common_set_mall_enable(struct smu_context *smu)
+{
+	enum smu_mall_pg_config pg_config = SMU_MALL_PG_CONFIG_DEFAULT;
+	int ret = 0;
+
+	if (amdgpu_ip_version(smu->adev, MP1_HWIP, 0) == IP_VERSION(14, 0, 1))
+		ret = smu_v14_0_1_init_mall_power_gating(smu, pg_config);
+
+	return ret;
+}
+
 static const struct pptable_funcs smu_v14_0_0_ppt_funcs = {
 	.check_fw_status = smu_v14_0_check_fw_status,
 	.check_fw_version = smu_v14_0_check_fw_version,
@@ -1454,6 +1526,7 @@ static const struct pptable_funcs smu_v14_0_0_ppt_funcs = {
 	.dpm_set_vpe_enable = smu_v14_0_0_set_vpe_enable,
 	.dpm_set_umsch_mm_enable = smu_v14_0_0_set_umsch_mm_enable,
 	.get_dpm_clock_table = smu_v14_0_common_get_dpm_table,
+	.set_mall_enable = smu_v14_0_common_set_mall_enable,
 };
 
 static void smu_v14_0_0_set_smu_mailbox_registers(struct smu_context *smu)