Error Detection And Correction (EDAC)

Error Detection And Correction is a mechanism used to detect and correct errors while storing or reading data.

Configuration option

Related configuration option:

API Reference

Related code samples

EDAC shell

Test error detection and correction (EDAC) using shell commands.

group edac

Since

2.5

Version

0.8.0

Optional interfaces

EDAC Optional Interfaces

static inline int edac_inject_set_param1(const struct device *dev, uint64_t value)

Set injection parameter param1.

Set first error injection parameter value.

Parameters:

  • dev – Pointer to the device structure

  • value – First injection parameter

Return values:

  • -ENOSYS – if the optional interface is not implemented

  • 0 – on success, other error code otherwise

static inline int edac_inject_get_param1(const struct device *dev, uint64_t *value)

Get injection parameter param1.

Get first error injection parameter value.

Parameters:

  • dev – Pointer to the device structure

  • value – Pointer to the first injection parameter

Return values:

  • -ENOSYS – if the optional interface is not implemented

  • 0 – on success, error code otherwise

static inline int edac_inject_set_param2(const struct device *dev, uint64_t value)

Set injection parameter param2.

Set second error injection parameter value.

Parameters:

  • dev – Pointer to the device structure

  • value – Second injection parameter

Return values:

  • -ENOSYS – if the optional interface is not implemented

  • 0 – on success, error code otherwise

static inline int edac_inject_get_param2(const struct device *dev, uint64_t *value)

Get injection parameter param2.

Parameters:

  • dev – Pointer to the device structure

  • value – Pointer to the second injection parameter

Return values:

  • -ENOSYS – if the optional interface is not implemented

  • 0 – on success, error code otherwise

static inline int edac_inject_set_error_type(const struct device *dev, uint32_t error_type)

Set error type value.

Set the value of error type to be injected

Parameters:

  • dev – Pointer to the device structure

  • error_type – Error type value

Return values:

  • -ENOSYS – if the optional interface is not implemented

  • 0 – on success, error code otherwise

static inline int edac_inject_get_error_type(const struct device *dev, uint32_t *error_type)

Get error type value.

Get the value of error type to be injected

Parameters:

  • dev – Pointer to the device structure

  • error_type – Pointer to error type value

Return values:

  • -ENOSYS – if the optional interface is not implemented

  • 0 – on success, error code otherwise

static inline int edac_inject_error_trigger(const struct device *dev)

Set injection control.

Trigger error injection.

Parameters:

  • dev – Pointer to the device structure

Return values:

  • -ENOSYS – if the optional interface is not implemented

  • 0 – on success, error code otherwise

Mandatory interfaces

EDAC Mandatory Interfaces

static inline int edac_ecc_error_log_get(const struct device *dev, uint64_t *value)

Get ECC Error Log.

Read value of ECC Error Log.

Parameters:

  • dev – Pointer to the device structure

  • value – Pointer to the ECC Error Log value

Return values:

  • 0 – on success, error code otherwise

  • -ENOSYS – if the mandatory interface is not implemented

static inline int edac_ecc_error_log_clear(const struct device *dev)

Clear ECC Error Log.

Clear value of ECC Error Log.

Parameters:

  • dev – Pointer to the device structure

Return values:

  • 0 – on success, error code otherwise

  • -ENOSYS – if the mandatory interface is not implemented

static inline int edac_parity_error_log_get(const struct device *dev, uint64_t *value)

Get Parity Error Log.

Read value of Parity Error Log.

Parameters:

  • dev – Pointer to the device structure

  • value – Pointer to the parity Error Log value

Return values:

  • 0 – on success, error code otherwise

  • -ENOSYS – if the mandatory interface is not implemented

static inline int edac_parity_error_log_clear(const struct device *dev)

Clear Parity Error Log.

Clear value of Parity Error Log.

Parameters:

  • dev – Pointer to the device structure

Return values:

  • 0 – on success, error code otherwise

  • -ENOSYS – if the mandatory interface is not implemented

static inline int edac_errors_cor_get(const struct device *dev)

Get number of correctable errors.

Parameters:

  • dev – Pointer to the device structure

Return values:

  • num – Number of correctable errors

  • -ENOSYS – if the mandatory interface is not implemented

static inline int edac_errors_uc_get(const struct device *dev)

Get number of uncorrectable errors.

Parameters:

  • dev – Pointer to the device structure

Return values:

  • num – Number of uncorrectable errors

  • -ENOSYS – if the mandatory interface is not implemented

static inline int edac_notify_callback_set(const struct device *dev, edac_notify_callback_f cb)

Register callback function for memory error exception.

This callback runs in interrupt context

Parameters:

  • dev – EDAC driver device to install callback

  • cb – Callback function pointer

Return values:

  • 0 – on success, error code otherwise

  • -ENOSYS – if the mandatory interface is not implemented

Enums

enum edac_error_type

EDAC error type.

Values:

enumerator EDAC_ERROR_TYPE_DRAM_COR = BIT(0)

Correctable error type.

enumerator EDAC_ERROR_TYPE_DRAM_UC = BIT(1)

Uncorrectable error type.