Memory Access Technology and Computer System

A storage, comprising:

• a non-volatile memory (NVM) configured to store data;
• and
• a media controller coupled to the NVM and configured to:
• receive, from a memory controller in a computer system, a first read command comprising a first identifier (ID), a first address, and a first length, wherein the first ID is an ID of the first read command, and wherein the first length indicates a size of first data to be read from the NVM by the first read command;
• receive, from the memory controller, at least two first send commands for fetching data of a third length, wherein the third length is less than the first length;
• and
• send, in response to the at least two first send commands, at least two data subblocks of the third length and metadata of the at least two data subblocks to the
• memory controller, wherein metadata of each data subblock comprises the first ID and a location ID, and wherein the location ID indicates an offset of a corresponding data subblock in the first data corresponding to the first address.

A memory access method applying to a computer system, comprising:

• sending, by a memory controller in the computer system, a first read command to a media controller coupled to a non-volatile memory (NVM) in the computer system, wherein the first read command comprises a first identifier (ID), a first address, and a first length, wherein the first ID is an ID of the first read command, and wherein the first length indicates a size of first data to be read from the NVM by the first read command;
• sending, by the memory controller, at least two first send commands to the media controller for fetching at least two pieces of data of a third length, wherein the third length is less than the first length;
• sending, by the media controller, at least two data subblocks of the third length and metadata of the at least two data subblocks to the memory controller in response to the at least two first send commands, wherein metadata of each data subblock comprises the first ID and a location ID, and wherein the location ID indicates a location of a corresponding data subblock in the first data corresponding to the first address;
• and
• obtaining, by the memory controller, the first data based on the at least two data subblocks and location IDs in the metadata of the at least two data subblocks.

A memory access method performed by a media controller, comprising:

• receiving, from a memory controller of a computer system, a first read command comprising a first identifier (ID), a first address, and a first length, wherein the first ID is an ID of the first read command, and wherein the first length indicates a size of first data to be read from a non-volatile memory (NVM) coupled to the media controller by the first read command;
• receiving, from the memory controller, at least two first send commands for fetching data of a third length, wherein the third length is less than the first length;
• and
• sending, in response to the at least two first send commands, at least two data subblocks of the third length and metadata of the at least two data subblocks to the memory controller, wherein metadata of each data subblock comprises the first ID and a location ID, and wherein the location ID indicates an offset of a corresponding data subblock in the first data corresponding to the first address.