struct stb_context stb_context;
 
        struct firmware pptable_firmware;
+
+       u32 param_reg;
+       u32 msg_reg;
+       u32 resp_reg;
 };
 
 struct i2c_adapter;
 
 
 int smu_v11_0_restore_user_od_settings(struct smu_context *smu);
 
+void smu_v11_0_set_smu_mailbox_registers(struct smu_context *smu);
+
 #endif
 #endif
 
                                uint32_t size);
 
 int smu_v13_0_set_default_dpm_tables(struct smu_context *smu);
+
+void smu_v13_0_set_smu_mailbox_registers(struct smu_context *smu);
 #endif
 #endif
 
        smu->table_map = arcturus_table_map;
        smu->pwr_src_map = arcturus_pwr_src_map;
        smu->workload_map = arcturus_workload_map;
+       smu_v11_0_set_smu_mailbox_registers(smu);
 }
 
        smu->message_map = cyan_skillfish_message_map;
        smu->table_map = cyan_skillfish_table_map;
        smu->is_apu = true;
+       smu_v11_0_set_smu_mailbox_registers(smu);
 }
 
        smu->table_map = navi10_table_map;
        smu->pwr_src_map = navi10_pwr_src_map;
        smu->workload_map = navi10_workload_map;
+       smu_v11_0_set_smu_mailbox_registers(smu);
 }
 
        smu->table_map = sienna_cichlid_table_map;
        smu->pwr_src_map = sienna_cichlid_pwr_src_map;
        smu->workload_map = sienna_cichlid_workload_map;
+       smu_v11_0_set_smu_mailbox_registers(smu);
 }
 
 
        return ret;
 }
+
+void smu_v11_0_set_smu_mailbox_registers(struct smu_context *smu)
+{
+       struct amdgpu_device *adev = smu->adev;
+
+       smu->param_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_82);
+       smu->msg_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_66);
+       smu->resp_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_90);
+}
 
        smu->table_map = vangogh_table_map;
        smu->workload_map = vangogh_workload_map;
        smu->is_apu = true;
+       smu_v11_0_set_smu_mailbox_registers(smu);
 }
 
 #undef pr_info
 #undef pr_debug
 
+#define mmMP1_SMN_C2PMSG_66                                                                            0x0282
+#define mmMP1_SMN_C2PMSG_66_BASE_IDX                                                                   0
+
+#define mmMP1_SMN_C2PMSG_82                                                                            0x0292
+#define mmMP1_SMN_C2PMSG_82_BASE_IDX                                                                   0
+
+#define mmMP1_SMN_C2PMSG_90                                                                            0x029a
+#define mmMP1_SMN_C2PMSG_90_BASE_IDX                                                                   0
+
 static struct cmn2asic_msg_mapping renoir_message_map[SMU_MSG_MAX_COUNT] = {
        MSG_MAP(TestMessage,                    PPSMC_MSG_TestMessage,                  1),
        MSG_MAP(GetSmuVersion,                  PPSMC_MSG_GetSmuVersion,                1),
 
 void renoir_set_ppt_funcs(struct smu_context *smu)
 {
+       struct amdgpu_device *adev = smu->adev;
+
        smu->ppt_funcs = &renoir_ppt_funcs;
        smu->message_map = renoir_message_map;
        smu->clock_map = renoir_clk_map;
        smu->workload_map = renoir_workload_map;
        smu->smc_driver_if_version = SMU12_DRIVER_IF_VERSION;
        smu->is_apu = true;
+       smu->param_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_82);
+       smu->msg_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_66);
+       smu->resp_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_90);
 }
 
        smu->clock_map = aldebaran_clk_map;
        smu->feature_map = aldebaran_feature_mask_map;
        smu->table_map = aldebaran_table_map;
+       smu_v13_0_set_smu_mailbox_registers(smu);
 }
 
 MODULE_FIRMWARE("amdgpu/smu_13_0_0.bin");
 MODULE_FIRMWARE("amdgpu/smu_13_0_7.bin");
 
+#define mmMP1_SMN_C2PMSG_66                                                                            0x0282
+#define mmMP1_SMN_C2PMSG_66_BASE_IDX                                                                   0
+
+#define mmMP1_SMN_C2PMSG_82                                                                            0x0292
+#define mmMP1_SMN_C2PMSG_82_BASE_IDX                                                                   0
+
+#define mmMP1_SMN_C2PMSG_90                                                                            0x029a
+#define mmMP1_SMN_C2PMSG_90_BASE_IDX                                                                   0
+
 #define SMU13_VOLTAGE_SCALE 4
 
 #define LINK_WIDTH_MAX                         6
        return smu_cmn_update_table(smu, SMU_TABLE_DPMCLOCKS, 0,
                                    smu_table->clocks_table, false);
 }
+
+void smu_v13_0_set_smu_mailbox_registers(struct smu_context *smu)
+{
+       struct amdgpu_device *adev = smu->adev;
+
+       smu->param_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_82);
+       smu->msg_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_66);
+       smu->resp_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_90);
+}
 
        smu->table_map = smu_v13_0_0_table_map;
        smu->pwr_src_map = smu_v13_0_0_pwr_src_map;
        smu->workload_map = smu_v13_0_0_workload_map;
+       smu_v13_0_set_smu_mailbox_registers(smu);
 }
 
 #undef pr_info
 #undef pr_debug
 
+#define mmMP1_SMN_C2PMSG_66                    0x0282
+#define mmMP1_SMN_C2PMSG_66_BASE_IDX            1
+
+#define mmMP1_SMN_C2PMSG_82                    0x0292
+#define mmMP1_SMN_C2PMSG_82_BASE_IDX            1
+
+#define mmMP1_SMN_C2PMSG_90                    0x029a
+#define mmMP1_SMN_C2PMSG_90_BASE_IDX           1
+
 #define FEATURE_MASK(feature) (1ULL << feature)
 
 #define SMC_DPM_FEATURE ( \
 
 void smu_v13_0_4_set_ppt_funcs(struct smu_context *smu)
 {
+       struct amdgpu_device *adev = smu->adev;
+
        smu->ppt_funcs = &smu_v13_0_4_ppt_funcs;
        smu->message_map = smu_v13_0_4_message_map;
        smu->feature_map = smu_v13_0_4_feature_mask_map;
        smu->table_map = smu_v13_0_4_table_map;
        smu->is_apu = true;
+       smu->param_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_82);
+       smu->msg_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_66);
+       smu->resp_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_90);
 }
 
 #undef pr_info
 #undef pr_debug
 
+#define mmMP1_C2PMSG_2                                                                            (0xbee142 + 0xb00000 / 4)
+#define mmMP1_C2PMSG_2_BASE_IDX                                                                   0
+
+#define mmMP1_C2PMSG_34                                                                           (0xbee262 + 0xb00000 / 4)
+#define mmMP1_C2PMSG_34_BASE_IDX                                                                   0
+
+#define mmMP1_C2PMSG_33                                                                                (0xbee261 + 0xb00000 / 4)
+#define mmMP1_C2PMSG_33_BASE_IDX                                                                   0
+
 #define FEATURE_MASK(feature) (1ULL << feature)
 #define SMC_DPM_FEATURE ( \
        FEATURE_MASK(FEATURE_CCLK_DPM_BIT) | \
 
 void smu_v13_0_5_set_ppt_funcs(struct smu_context *smu)
 {
+       struct amdgpu_device *adev = smu->adev;
+
        smu->ppt_funcs = &smu_v13_0_5_ppt_funcs;
        smu->message_map = smu_v13_0_5_message_map;
        smu->feature_map = smu_v13_0_5_feature_mask_map;
        smu->table_map = smu_v13_0_5_table_map;
        smu->is_apu = true;
+       smu->param_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_C2PMSG_34);
+       smu->msg_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_C2PMSG_2);
+       smu->resp_reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_C2PMSG_33);
 }
 
        smu->table_map = smu_v13_0_7_table_map;
        smu->pwr_src_map = smu_v13_0_7_pwr_src_map;
        smu->workload_map = smu_v13_0_7_workload_map;
+       smu_v13_0_set_smu_mailbox_registers(smu);
 }
 
        smu->feature_map = yellow_carp_feature_mask_map;
        smu->table_map = yellow_carp_table_map;
        smu->is_apu = true;
+       smu_v13_0_set_smu_mailbox_registers(smu);
 }