Message-based memory access apparatus and access method thereof

A message-based memory access apparatus, comprising:

• a central processing unit (CPU);
• a message-based memory controller coupled to the CPU via a message-based command bus;
• and
• a storage device coupled to the message-based memory controller via a message channel,
• wherein the CPU is configured to generate a message-based memory access request instruction and transmit the message-based memory access request instruction to the message-based memory controller via the message-based command bus, wherein the message-based memory access request instruction instructs the message-based memory controller to perform a memory access operation,
• wherein the message-based memory controller is configured to acquire a message-based memory access request according to the message-based memory access request instruction, set attributes of the message-based memory access request in a request state table, generate a plurality of division requests from the message-based memory access request according to the attributes, package one or more division requests into a message packet, and send the message packet to the storage device via the message channel, and wherein the message-based memory controller is further configured to parse a response packet returned by the storage device via the message channel to obtain data contained in the response packet and return the data to the CPU via the message-based command bus, and
• wherein the storage device is configured to receive the message packet from the message-based memory controller, unpack the message packet to perform the memory access operation, produce the response packet, and send the response packet to the message-based memory controller.