Buffered automated flash controller connected directly to processor memory bus

A buffered flash memory module, comprising:

• a plurality of memory buffers;
• a plurality of solid state drives;
• and
• a controller, wherein the controller is configured to:
• responsive to a memory interface of the buffered flash memory module receiving from a memory bus of a processor a memory bus command specifying a write operation and a memory address within a window of memory addresses, initialize a first memory buffer in the buffered flash memory module, wherein the buffered flash memory module is connected directly to the memory bus and appears to the processor as a memory module;
• write to the first memory buffer based on the memory bus command;
• responsive to the first memory buffer being full, deterministically map addresses from the first memory buffer to the plurality of solid state drives using a modular mask based on a stripe size;
• build a plurality of input/output commands to persist contents of the first memory buffer to the plurality of solid state drives according to the deterministic mapping;
• and
• write the contents of the first memory buffer to the plurality of solid state drives according to the plurality of input/output commands.

A method for direct memory access in a storage device, the method comprising:

• responsive to a memory interface of the buffered flash memory module receiving from a memory bus of a processor a memory bus command specifying a write operation and a memory address within a window of memory addresses, initializing a first memory buffer in the buffered flash memory module, wherein the buffered flash memory module is connected directly to the memory bus and appears to the processor as a memory module;
• writing to the first memory buffer based on the memory bus command;
• responsive to the first memory buffer being full, deterministically mapping addresses from the first memory buffer to a plurality of solid state drives in the buffered flash memory module using a modular mask based on a stripe size;
• building a plurality of input/output commands to persist contents of the first memory buffer to the plurality of solid state drives according to the deterministic mapping;
• and
• writing the contents of the first memory buffer to the plurality of solid state drives in the buffered flash memory module according to the plurality of input/output commands.