static int cci550_validate_hw_event()

in arm-cci.c [592:633]

• 38 lines of code
• 19 McCabe index (conditional complexity)

static int cci550_validate_hw_event(struct cci_pmu *cci_pmu,
					unsigned long hw_event)
{
	u32 ev_source = CCI5xx_PMU_EVENT_SOURCE(hw_event);
	u32 ev_code = CCI5xx_PMU_EVENT_CODE(hw_event);
	int if_type;

	if (hw_event & ~CCI5xx_PMU_EVENT_MASK)
		return -ENOENT;

	switch (ev_source) {
	case CCI5xx_PORT_S0:
	case CCI5xx_PORT_S1:
	case CCI5xx_PORT_S2:
	case CCI5xx_PORT_S3:
	case CCI5xx_PORT_S4:
	case CCI5xx_PORT_S5:
	case CCI5xx_PORT_S6:
		if_type = CCI_IF_SLAVE;
		break;
	case CCI5xx_PORT_M0:
	case CCI5xx_PORT_M1:
	case CCI5xx_PORT_M2:
	case CCI5xx_PORT_M3:
	case CCI5xx_PORT_M4:
	case CCI5xx_PORT_M5:
	case CCI5xx_PORT_M6:
		if_type = CCI_IF_MASTER;
		break;
	case CCI5xx_PORT_GLOBAL:
		if_type = CCI_IF_GLOBAL;
		break;
	default:
		return -ENOENT;
	}

	if (ev_code >= cci_pmu->model->event_ranges[if_type].min &&
		ev_code <= cci_pmu->model->event_ranges[if_type].max)
		return hw_event;

	return -ENOENT;
}