Recovery code management method and memory system using same

摘要

A method managing execution of recovery code in a memory system includes; upon detecting a read error using a CPU and firmware to execute recovery code defining a read recovery operation including a read retry operation, during execution of the recovery code, generating a read request directed to the read retry operation, and immediately thereafter terminating execution of the recovery code, and thereafter, only upon receiving an asynchronous interrupt from the memory controller following completion of the read retry operation, the CPU resumes execution of the recovery code by the firmware, otherwise the CPU performs another task unrelated to execution of the recovery code.

主权项

1. A method managing execution of recovery code defining a read recovery operation including a read retry operation for a memory system, the memory system including a Central Processing Unit (CPU), firmware configured to execute the recovery code, a storage device and a memory controller that controls the storage device, the method comprising:
upon detecting a read error, the CPU causes the firmware to execute recovery code; during execution of the recovery code by the CPU and the firmware, generating a read request directed to a read retry operation, and immediately thereafter terminating execution of the recovery code by the CPU and the firmware; while the memory controller and the storage device operate to execute the read retry operation, the CPU performs another task unrelated to executing the recovery code: upon completion of the read retry operation, using the memory controller to generate an interrupt and providing the interrupt to the CPU; and in response to the interrupt, the CPU causes the firmware to again execute the recovery code.