Dynamic cache row fail accumulation due to catastrophic failure

A method by a cache controller for taking a wordline offline based on errors, the method comprising:

• reading, by the cache controller, the wordline in a cache, wherein the wordline is utilized to read a plurality of ECC words in the cache;
• in response to reading the wordline, detecting, by the cache controller, errors on the wordline;
• in response to detecting the errors, determining, by the cache controller, that the wordline is a bad wordline to be taken offline based on the wordline comprising at least one of the conditions:
• one ECC word having an uncorrectable error and another ECC word having a correctable error;
• and
• one certain ECC word having the correctable error and another certain ECC word having the correctable error;
• when the wordline comprises the at least one of the conditions to be the bad wordline, the cache controller is configured to at least one of:
• store a bad wordline address of the bad wordline such that any future reference to the bad wordline is flagged as the uncorrectable error,
• cause a dynamic or static repair of the bad wordline,
• fence off any wordlines having had the uncorrectable error detected, and
• perform calling home in order to have the bad wordline ticketed for repair;
• monitoring, by the cache controller, future accesses to the cache, thereby allowing the cache controller to cover multiple fail modes;
• finding, by the cache controller, adjacent wordlines in the cache that have wordline addresses matching portions of the bad wordline address of the bad wordline;
• and
• marking, by the cache controller, the adjacent wordlines as bad wordlines.