drm/amd/pp: Refine smu7/8 request_smu_load_fw callback function

The request_smu_load_fw of VI is used to load gfx/sdma
ip's firmware.

Check whether the gfx/sdma firmware have been loaded successfully
in this callback function.
if failed, driver can exit to avoid gpu hard hung.
if successful, clean the flag reload_fw to avoid duplicated fw load.
when suspend/resume, driver need to reload fw.
so in suspend, reset the reload_fw flag to true to enable load fw when
resume.
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c

@@ -301,6 +301,7 @@ int hwmgr_suspend(struct pp_hwmgr *hwmgr)
 	if (!hwmgr || !hwmgr->pm_en)
 		return 0;
 
+	hwmgr->reload_fw = true;
 	phm_disable_smc_firmware_ctf(hwmgr);
 	ret = psm_set_boot_states(hwmgr);
 	if (ret)

drivers/gpu/drm/amd/powerplay/smumgr/smu7_smumgr.c

@@ -302,44 +302,6 @@ int smu7_write_smc_sram_dword(struct pp_hwmgr *hwmgr, uint32_t smc_addr, uint32_
 	return 0;
 }
 
-/* Convert the firmware type to SMU type mask. For MEC, we need to check all MEC related type */
-
-static uint32_t smu7_get_mask_for_firmware_type(uint32_t fw_type)
-{
-	uint32_t result = 0;
-
-	switch (fw_type) {
-	case UCODE_ID_SDMA0:
-		result = UCODE_ID_SDMA0_MASK;
-		break;
-	case UCODE_ID_SDMA1:
-		result = UCODE_ID_SDMA1_MASK;
-		break;
-	case UCODE_ID_CP_CE:
-		result = UCODE_ID_CP_CE_MASK;
-		break;
-	case UCODE_ID_CP_PFP:
-		result = UCODE_ID_CP_PFP_MASK;
-		break;
-	case UCODE_ID_CP_ME:
-		result = UCODE_ID_CP_ME_MASK;
-		break;
-	case UCODE_ID_CP_MEC:
-	case UCODE_ID_CP_MEC_JT1:
-	case UCODE_ID_CP_MEC_JT2:
-		result = UCODE_ID_CP_MEC_MASK;
-		break;
-	case UCODE_ID_RLC_G:
-		result = UCODE_ID_RLC_G_MASK;
-		break;
-	default:
-		pr_info("UCode type is out of range! \n");
-		result = 0;
-	}
-
-	return result;
-}
-
 static int smu7_populate_single_firmware_entry(struct pp_hwmgr *hwmgr,
 						uint32_t fw_type,
 						struct SMU_Entry *entry)
@@ -381,10 +343,8 @@ int smu7_request_smu_load_fw(struct pp_hwmgr *hwmgr)
 	uint32_t fw_to_load;
 	int r = 0;
 
-	if (!hwmgr->reload_fw) {
-		pr_info("skip reloading...\n");
+	if (!hwmgr->reload_fw)
 		return 0;
-	}
 
 	if (smu_data->soft_regs_start)
 		cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC,
@@ -467,10 +427,14 @@ int smu7_request_smu_load_fw(struct pp_hwmgr *hwmgr)
 	smu7_send_msg_to_smc_with_parameter(hwmgr, PPSMC_MSG_DRV_DRAM_ADDR_HI, upper_32_bits(smu_data->header_buffer.mc_addr));
 	smu7_send_msg_to_smc_with_parameter(hwmgr, PPSMC_MSG_DRV_DRAM_ADDR_LO, lower_32_bits(smu_data->header_buffer.mc_addr));
 
-	if (smu7_send_msg_to_smc_with_parameter(hwmgr, PPSMC_MSG_LoadUcodes, fw_to_load))
-		pr_err("Fail to Request SMU Load uCode");
+	smu7_send_msg_to_smc_with_parameter(hwmgr, PPSMC_MSG_LoadUcodes, fw_to_load);
 
-	return r;
+	r = smu7_check_fw_load_finish(hwmgr, fw_to_load);
+	if (!r) {
+		hwmgr->reload_fw = 0;
+		return 0;
+	}
+	pr_err("SMU load firmware failed\n");
 
 failed:
 	kfree(smu_data->toc);
@@ -482,13 +446,12 @@ int smu7_request_smu_load_fw(struct pp_hwmgr *hwmgr)
 int smu7_check_fw_load_finish(struct pp_hwmgr *hwmgr, uint32_t fw_type)
 {
 	struct smu7_smumgr *smu_data = (struct smu7_smumgr *)(hwmgr->smu_backend);
-	uint32_t fw_mask = smu7_get_mask_for_firmware_type(fw_type);
 	uint32_t ret;
 
 	ret = phm_wait_on_indirect_register(hwmgr, mmSMC_IND_INDEX_11,
 					smu_data->soft_regs_start + smum_get_offsetof(hwmgr,
 					SMU_SoftRegisters, UcodeLoadStatus),
-					fw_mask, fw_mask);
+					fw_type, fw_type);
 	return ret;
 }
 

drivers/gpu/drm/amd/powerplay/smumgr/smu8_smumgr.c

@@ -658,11 +658,11 @@ static int smu8_request_smu_load_fw(struct pp_hwmgr *hwmgr)
 {
 	struct smu8_smumgr *smu8_smu = hwmgr->smu_backend;
 	uint32_t smc_address;
+	uint32_t fw_to_check = 0;
+	int ret;
 
-	if (!hwmgr->reload_fw) {
-		pr_info("skip reloading...\n");
+	if (!hwmgr->reload_fw)
 		return 0;
-	}
 
 	smu8_smu_populate_firmware_entries(hwmgr);
 
@@ -689,28 +689,9 @@ static int smu8_request_smu_load_fw(struct pp_hwmgr *hwmgr)
 	smu8_send_msg_to_smc_with_parameter(hwmgr, PPSMC_MSG_ExecuteJob,
 				smu8_smu->toc_entry_power_profiling_index);
 
-	return smu8_send_msg_to_smc_with_parameter(hwmgr,
+	smu8_send_msg_to_smc_with_parameter(hwmgr,
 					PPSMC_MSG_ExecuteJob,
 					smu8_smu->toc_entry_initialize_index);
-}
-
-static int smu8_start_smu(struct pp_hwmgr *hwmgr)
-{
-	int ret = 0;
-	uint32_t fw_to_check = 0;
-	struct amdgpu_device *adev = hwmgr->adev;
-
-	uint32_t index = SMN_MP1_SRAM_START_ADDR +
-			 SMU8_FIRMWARE_HEADER_LOCATION +
-			 offsetof(struct SMU8_Firmware_Header, Version);
-
-
-	if (hwmgr == NULL || hwmgr->device == NULL)
-		return -EINVAL;
-
-	cgs_write_register(hwmgr->device, mmMP0PUB_IND_INDEX, index);
-	hwmgr->smu_version = cgs_read_register(hwmgr->device, mmMP0PUB_IND_DATA);
-	adev->pm.fw_version = hwmgr->smu_version >> 8;
 
 	fw_to_check = UCODE_ID_RLC_G_MASK |
 			UCODE_ID_SDMA0_MASK |
@@ -724,8 +705,6 @@ static int smu8_start_smu(struct pp_hwmgr *hwmgr)
 	if (hwmgr->chip_id == CHIP_STONEY)
 		fw_to_check &= ~(UCODE_ID_SDMA1_MASK | UCODE_ID_CP_MEC_JT2_MASK);
 
-	smu8_request_smu_load_fw(hwmgr);
-
 	ret = smu8_check_fw_load_finish(hwmgr, fw_to_check);
 	if (ret) {
 		pr_err("SMU firmware load failed\n");
@@ -733,10 +712,33 @@ static int smu8_start_smu(struct pp_hwmgr *hwmgr)
 	}
 
 	ret = smu8_load_mec_firmware(hwmgr);
-	if (ret)
+	if (ret) {
 		pr_err("Mec Firmware load failed\n");
-
 		return ret;
+	}
+
+	hwmgr->reload_fw = 0;
+
+	return 0;
+}
+
+static int smu8_start_smu(struct pp_hwmgr *hwmgr)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+
+	uint32_t index = SMN_MP1_SRAM_START_ADDR +
+			 SMU8_FIRMWARE_HEADER_LOCATION +
+			 offsetof(struct SMU8_Firmware_Header, Version);
+
+
+	if (hwmgr == NULL || hwmgr->device == NULL)
+		return -EINVAL;
+
+	cgs_write_register(hwmgr->device, mmMP0PUB_IND_INDEX, index);
+	hwmgr->smu_version = cgs_read_register(hwmgr->device, mmMP0PUB_IND_DATA);
+	adev->pm.fw_version = hwmgr->smu_version >> 8;
+
+	return smu8_request_smu_load_fw(hwmgr);
 }
 
 static int smu8_smu_init(struct pp_hwmgr *hwmgr)