Method for improving read-only performance in solid-state hard disk and solid-state hard disk

Abstract

The invention discloses a method for improving the read-only property of a solid state disk and the solid state disk. The method is characterized in that a read-only operation channel is added in the solid state disk; concretely, an address mapping interface is added in an FTL; the address mapping interface can map an address with read operation to a read address of NFC; when the SATA receives a read-only operation instruction, the address mapping interface is called to obtain an NFC address corresponding to the read-only operation instruction; next, a reading instruction is directly sent to the NFC; the NFC reads data of the storage space according to the reading instruction of the SATA and directly feeds data back to the SATA. The method for improving the read-only property of the solid state disk and the solid state disk have the following beneficial effects: by recognizing read-only operation and simplifying the read process of hard disk data through read-only operation, processing time of an FTL is reduced and the read-only property is greatly improved.

Description

technical field [0001] The invention relates to solid-state hard disk control technology, in particular to a method for improving the read-only performance of the solid-state hard disk and the solid-state hard disk. Background technique [0002] The operation of the host on the SATA solid-state drive (SSD) includes reading and writing, so when designing the firmware (control software) of the solid-state drive, the system is divided into three major modules: interface SATA (take the SATA interface as an example), FTL (Flashtranslation layer) flash conversion layer and NandFlash controller NFC, and the modules interact through FIFO. figure 1 It is a conventional firmware topology structure. The read command request initiated by the host first enters SATA, then enters FTL after translation, enters NFC after calculating the mapping address, returns to FTL after reading data, and then returns to SATA to complete. [0003] When the host only has read-only scenarios, the host only...

AI Technical Summary

Problems solved by technology

This design is not very efficient in a read-only scenario. Defect 1: The three major modules need to occupy CPU resources to operate; Defect 2: The request transfer between modules uses the FIFO mechanism. Because of the existence of mutexes, operating FIFO will have a certain delay, high delay

Therefore, the conventional firmware topology has a large delay in the read-only scenario, and the performance has a large room for improvement.

Images