video: driver: add support to print noc error log registers

Added support to print noc error log registers at below places.

- smmu_fault_handler path
- handle_system_error path.

Change-Id: I9e195bd82a2058f533df8713368e61f57b537b87
Signed-off-by: Govindaraj Rajagopal <grajagop@codeaurora.org>

driver/variant/iris2/src/msm_vidc_iris2.c

@@ -387,8 +387,12 @@ static int __noc_error_info_iris2(struct msm_vidc_core *vidc_core)
 		return -EINVAL;
 	}
 
-	//if (core->res->vpu_ver == VPU_VERSION_IRIS2_1)
-	//	return;
+	/* check ErrLog registers contain valid info */
+	if (!__read_register(core, VCODEC_NOC_ERL_MAIN_ERRVLD_LOW)) {
+		d_vpr_e("%s: VCODEC_NOC_ERL_MAIN_ERRVLD_LOW bit not-set\n", __func__);
+		/* todo: uncomment below line after validation */
+		//return 0;
+	}
 
 	val = __read_register(core, VCODEC_NOC_ERL_MAIN_SWID_LOW);
 	d_vpr_e("VCODEC_NOC_ERL_MAIN_SWID_LOW:     %#x\n", val);
@@ -396,8 +400,6 @@ static int __noc_error_info_iris2(struct msm_vidc_core *vidc_core)
 	d_vpr_e("VCODEC_NOC_ERL_MAIN_SWID_HIGH:     %#x\n", val);
 	val = __read_register(core, VCODEC_NOC_ERL_MAIN_MAINCTL_LOW);
 	d_vpr_e("VCODEC_NOC_ERL_MAIN_MAINCTL_LOW:     %#x\n", val);
-	val = __read_register(core, VCODEC_NOC_ERL_MAIN_ERRVLD_LOW);
-	d_vpr_e("VCODEC_NOC_ERL_MAIN_ERRVLD_LOW:     %#x\n", val);
 	val = __read_register(core, VCODEC_NOC_ERL_MAIN_ERRCLR_LOW);
 	d_vpr_e("VCODEC_NOC_ERL_MAIN_ERRCLR_LOW:     %#x\n", val);
 	val = __read_register(core, VCODEC_NOC_ERL_MAIN_ERRLOG0_LOW);

driver/vidc/inc/venus_hfi.h

@@ -46,6 +46,7 @@ int venus_hfi_session_open(struct msm_vidc_inst *inst);
 int venus_hfi_session_set_codec(struct msm_vidc_inst *inst);
 int venus_hfi_core_init(struct msm_vidc_core *core);
 int venus_hfi_core_deinit(struct msm_vidc_core *core);
+int venus_print_noc_error_info(struct msm_vidc_core *core);
 int venus_hfi_suspend(struct msm_vidc_core *core);
 int venus_hfi_scale_clocks(struct msm_vidc_inst* inst, u64 freq);
 int venus_hfi_scale_buses(struct msm_vidc_inst* inst, u64 bw_ddr, u64 bw_llcc);

driver/vidc/src/msm_vidc_driver.c

@@ -3410,6 +3410,9 @@ void msm_vidc_smmu_fault_work_handler(struct work_struct *work)
 		return;
 	}
 
+	/* print noc error log registers */
+	venus_print_noc_error_info(core);
+
 	core_lock(core, __func__);
 	list_for_each_entry(inst, &core->instances, list)
 		instances[num_instances++] = inst;

driver/vidc/src/venus_hfi.c

@@ -2844,6 +2844,31 @@ int venus_hfi_core_deinit(struct msm_vidc_core *core)
 	return 0;
 }
 
+int venus_print_noc_error_info(struct msm_vidc_core *core)
+{
+	if (!core) {
+		d_vpr_e("%s: Invalid parameters: %pK\n",
+			__func__, core);
+		return -EINVAL;
+	}
+
+	if (!core->capabilities[NON_FATAL_FAULTS].value)
+		return 0;
+
+	core_lock(core, __func__);
+	/* resume venus before accessing noc registers */
+	if (__resume(core)) {
+		d_vpr_e("%s: Power on failed\n", __func__);
+		goto unlock;
+	}
+
+	call_venus_op(core, noc_error_info, core);
+
+unlock:
+	core_unlock(core, __func__);
+	return 0;
+}
+
 int venus_hfi_suspend(struct msm_vidc_core *core)
 {
 	int rc = 0;

driver/vidc/src/venus_hfi_response.c

@@ -315,6 +315,7 @@ static int handle_system_error(struct msm_vidc_core *core,
 {
 	d_vpr_e("%s: system error received\n", __func__);
 	print_sfr_message(core);
+	venus_print_noc_error_info(core);
 	msm_vidc_core_deinit(core, true);
 	return 0;
 }