drm/amd/powerplay: add new helper functions in hwmgr.h

Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NRex Zhu <Rex.Zhu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

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

@@ -451,7 +451,7 @@ int phm_wait_on_register(struct pp_hwmgr *hwmgr, uint32_t index,
  * reached the given value.The indirect space is described by giving
  * the memory-mapped index of the indirect index register.
  */
-void phm_wait_on_indirect_register(struct pp_hwmgr *hwmgr,
+int phm_wait_on_indirect_register(struct pp_hwmgr *hwmgr,
 				uint32_t indirect_port,
 				uint32_t index,
 				uint32_t value,
@@ -459,14 +459,50 @@ void phm_wait_on_indirect_register(struct pp_hwmgr *hwmgr,
 {
 	if (hwmgr == NULL || hwmgr->device == NULL) {
 		pr_err("Invalid Hardware Manager!");
-		return;
+		return -EINVAL;
 	}
 
 	cgs_write_register(hwmgr->device, indirect_port, index);
-	phm_wait_on_register(hwmgr, indirect_port + 1, mask, value);
+	return phm_wait_on_register(hwmgr, indirect_port + 1, mask, value);
 }
 
+int phm_wait_for_register_unequal(struct pp_hwmgr *hwmgr,
+					uint32_t index,
+					uint32_t value, uint32_t mask)
+{
+	uint32_t i;
+	uint32_t cur_value;
 
+	if (hwmgr == NULL || hwmgr->device == NULL)
+		return -EINVAL;
+
+	for (i = 0; i < hwmgr->usec_timeout; i++) {
+		cur_value = cgs_read_register(hwmgr->device,
+									index);
+		if ((cur_value & mask) != (value & mask))
+			break;
+		udelay(1);
+	}
+
+	/* timeout means wrong logic */
+	if (i == hwmgr->usec_timeout)
+		return -ETIME;
+	return 0;
+}
+
+int phm_wait_for_indirect_register_unequal(struct pp_hwmgr *hwmgr,
+						uint32_t indirect_port,
+						uint32_t index,
+						uint32_t value,
+						uint32_t mask)
+{
+	if (hwmgr == NULL || hwmgr->device == NULL)
+		return -EINVAL;
+
+	cgs_write_register(hwmgr->device, indirect_port, index);
+	return phm_wait_for_register_unequal(hwmgr, indirect_port + 1,
+						value, mask);
+}
 
 bool phm_cf_want_uvd_power_gating(struct pp_hwmgr *hwmgr)
 {

drivers/gpu/drm/amd/powerplay/inc/hwmgr.h

@@ -792,12 +792,19 @@ extern int hwmgr_handle_task(struct pp_instance *handle,
 extern int phm_wait_on_register(struct pp_hwmgr *hwmgr, uint32_t index,
 				uint32_t value, uint32_t mask);
 
-extern void phm_wait_on_indirect_register(struct pp_hwmgr *hwmgr,
+extern int phm_wait_on_indirect_register(struct pp_hwmgr *hwmgr,
 				uint32_t indirect_port,
 				uint32_t index,
 				uint32_t value,
 				uint32_t mask);
 
+extern int phm_wait_for_register_unequal(struct pp_hwmgr *hwmgr,
+					uint32_t index,
+					uint32_t value, uint32_t mask);
+extern int phm_wait_for_indirect_register_unequal(
+				struct pp_hwmgr *hwmgr,
+				uint32_t indirect_port, uint32_t index,
+				uint32_t value, uint32_t mask);
 
 
 extern bool phm_cf_want_uvd_power_gating(struct pp_hwmgr *hwmgr);
@@ -882,5 +889,4 @@ extern int phm_get_voltage_evv_on_sclk(struct pp_hwmgr *hwmgr, uint8_t voltage_t
 	PHM_WAIT_INDIRECT_REGISTER(hwmgr, port, reg, (fieldval)	\
 			<< PHM_FIELD_SHIFT(reg, field), PHM_FIELD_MASK(reg, field))
 
-
 #endif /* _HWMGR_H_ */

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

@@ -79,7 +79,7 @@ static uint32_t rv_wait_for_response(struct pp_hwmgr *hwmgr)
 	reg = soc15_get_register_offset(MP1_HWID, 0,
 			mmMP1_SMN_C2PMSG_90_BASE_IDX, mmMP1_SMN_C2PMSG_90);
 
-	smum_wait_for_register_unequal(hwmgr, reg,
+	phm_wait_for_register_unequal(hwmgr, reg,
 			0, MP1_C2PMSG_90__CONTENT_MASK);
 
 	return cgs_read_register(hwmgr->device, reg);

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

@@ -487,11 +487,10 @@ int smu7_check_fw_load_finish(struct pp_hwmgr *hwmgr, uint32_t fw_type)
 	uint32_t fw_mask = smu7_get_mask_for_firmware_type(fw_type);
 	uint32_t ret;
 
-	ret = smum_wait_on_indirect_register(hwmgr, mmSMC_IND_INDEX_11,
+	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);
-
 	return ret;
 }
 

drivers/gpu/drm/amd/powerplay/smumgr/vega10_smumgr.c

@@ -90,7 +90,7 @@ static uint32_t vega10_wait_for_response(struct pp_hwmgr *hwmgr)
 	reg = soc15_get_register_offset(MP1_HWID, 0,
 			mmMP1_SMN_C2PMSG_90_BASE_IDX, mmMP1_SMN_C2PMSG_90);
 
-	smum_wait_for_register_unequal(hwmgr, reg,
+	phm_wait_for_register_unequal(hwmgr, reg,
 			0, MP1_C2PMSG_90__CONTENT_MASK);
 
 	return cgs_read_register(hwmgr->device, reg);