Buffer zone configuration method of host memory, storage device and control circuit unit

Abstract

The invention discloses a buffer zone configuration method of a host memory, a storage device and a control circuit unit. The buffer zone configuration method comprises the following steps: loading aninitialization program of an option read-only memory of a memory storage device into a buffer memory of a host system; an initialization program is executed to configure a continuous entity address in a buffer memory of a host system to a memory storage device as a host memory buffer zone of the memory storage device, and to set and store a flag on the continuous entity address. The buffer zone configuration method further comprises the following steps: when receiving a restart instruction correspondingly pausing to the memory mode, re-establishing a connection with the continuous entity address, and judging whether a mark set on the continuous entity address is the same as the stored mark or not; and if the marks are the same, continuously using the continuous entity address as a host memory buffer zone of the memory storage device.

Description

technical field [0001] The invention relates to a host memory buffer configuration method, a memory storage device and a memory control circuit unit. Background technique [0002] For memory storage devices with different functions, in order to fully utilize the role of the memory storage device in improving the performance of electronic equipment, the current host system has the function of providing a memory buffer (host memory buffer, HMB) for the memory storage device. For example, for an SSD (Solid State Drives) with a storage space of 1TB, the host system, for example, provides a storage space of about 1GB as its host memory buffer. When allocating the host memory buffer, there are generally two opportunities for the host system to drive the host memory buffer, when the driver loads and finds the memory storage device, and when the memory storage device is abnormal or the command triggers a restart during operation. [0003] In order to improve the performance of elec...

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Problems solved by technology

[0004] In the above process, the host system communicates with the memory storage device through the driver layer, which requires that the driver layer of the host system is compatible with the driver program of the memory storage device, otherwise it is impossible to realize the initialization of the drive memory storage device or to configure the memory storage device with a continuous entity address memory

Then, configuring the host memory buffer through the driver layer requires that the host system has a corresponding driver installed. Therefore, if the user does not install the driver in the host system, the function of the host memory buffer cannot be started, causing the user to the inconvenience

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