PMU counter shadow
Storing PMU counters in shadow variables, in case the PMU was powered
off or soft reset.
Change-Id: I64ccf3fb6195f9be2d8315891ec612bb75404885
diff --git a/include/ethosu_device.h b/include/ethosu_device.h
index 5edba94..91aa877 100644
--- a/include/ethosu_device.h
+++ b/include/ethosu_device.h
@@ -54,15 +54,15 @@
struct ethosu_device
{
- uintptr_t base_address;
+ volatile uint32_t *base_address;
uint32_t reset;
uint32_t pmcr;
- uint64_t pmccntr;
+ uint32_t pmccntr[2];
uint32_t pmcnten;
uint32_t pmint;
uint32_t pmccntr_cfg;
uint32_t pmu_evcntr[ETHOSU_PMU_NCOUNTERS];
- enum ethosu_pmu_event_type pmu_evtypr[ETHOSU_PMU_NCOUNTERS];
+ uint32_t pmu_evtypr[ETHOSU_PMU_NCOUNTERS];
};
struct ethosu_id
@@ -378,6 +378,13 @@
void ethosu_write_reg(struct ethosu_device *dev, uint32_t address, uint32_t value);
/**
+ * Write register with shadow variable.
+ * \param[in] address Address to read.
+ * \param[in] value Value to be written.
+ */
+void ethosu_write_reg_shadow(struct ethosu_device *dev, uint32_t address, uint32_t value, uint32_t *shadow);
+
+/**
* Save the PMU configuration to ethosu_device struct.
* \param[in] dev Ethos-U device where the PMU configuration is
* saved.
@@ -394,6 +401,14 @@
enum ethosu_error_codes ethosu_restore_pmu_config(struct ethosu_device *dev);
/**
+ * Save PMU counters to shadow variables in memory.
+ * \param[in] dev Ethos-U device where the PMU configuration is
+ * stored.
+ * \return \ref ethosu_error_codes
+ */
+enum ethosu_error_codes ethosu_save_pmu_counters(struct ethosu_device *dev);
+
+/**
* Check if the STATUS register has any error bits set or not.
* \param[in] dev Ethos-U device to check.
* \return true if any error bits set,