GROUP WRITE OPERATIONS FOR A DATA STORAGE DEVICE

• US 20190035473A1
• Filed: 07/25/2017
• Published: 01/31/2019
• Est. Priority Date: 07/25/2017
• Status: Active Grant

• Current Assignee: Sandisk Technologies Incorporated (Western Digital Corporation)
• Original Assignee: Western Digital Technologies Incorporated (Western Digital Corporation)
• Inventors: Rajamani, Thibash, Chander, Ramesh, Krishnan, Manavalan, O'Krafka, Brian, Chodem, Nagi Reddy
• Granted Patent: US 10,643,707 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 12/0246 in block erasable memory, e.g. flash memory
• CPC Class Codes: G06F 12/0623 for memory modules
• CPC Class Codes: G06F 12/0817 using directory methods
• CPC Class Codes: G06F 2212/1024 Latency reduction
• CPC Class Codes: G06F 2212/7201 Logical to physical mapping or translation of blocks or pages
• CPC Class Codes: G06F 2212/7203 Temporary buffering, e.g. using volatile buffer or dedicated buffer blocks
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0659 Command handling arrangements, e.g. command buffers, queues, command scheduling
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
• CPC Class Codes: G11C 16/105 Circuits or methods for updating contents of nonvolatile memory, especially with 'security' features to ensure reliable replacement, i.e. preventing that old data is lost before new data is reliably written

Abstract

An apparatus includes a non-volatile memory and a controller coupled to the non-volatile memory. The controller is configured to receive a command from a device to perform a write operation at the non-volatile memory. The command indicates a plurality of logical addresses, data associated with the plurality of logical addresses, and a number of write operations associated with the command.

Claims

1. An apparatus comprising:

a non-volatile memory; and

a controller coupled to the non-volatile memory, the controller configured to receive a command from a device to perform a write operation at the non-volatile memory, the command indicating;

a plurality of logical addresses;

data associated with the plurality of logical addresses; and

a number of write operations associated with the command.

2. The apparatus of claim 1, wherein the command further indicates a write serialization (WS) group write opcode.

3. The apparatus of claim 2, further comprising a flash translation layer (FTL) of the controller, the FTL configured to determine a particular physical address of the non-volatile memory based on the plurality of logical addresses and the WS group write opcode.

4. The apparatus of claim 1, wherein the controller is further configured to:

perform the write operation to store the data to the non-volatile memory; and

update multiple entries of a logical-to-physical (L2P) address mapping table in response to the write operation.

5. A method of operation of a data storage device, the method comprising:

receiving, by a data storage device that includes a non-volatile memory, a command from a device to perform a write operation at the non-volatile memory, the command indicating;

a plurality of logical addresses;

data associated with the plurality of logical addresses; and

a number of write operations associated with the command; and

performing the write operation by storing the data to the non-volatile memory.

6. The method of claim 5, wherein the command further indicates a write serialization (WS) group write opcode.

7. The method of claim 6, further comprising determining, using a flash translation layer (FTL) of the data storage device, a particular physical address of the non-volatile memory based on the plurality of logical addresses and the WS group write opcode.

8. The method of claim 5, further comprising updating multiple entries of a logical-to-physical (L2P) address mapping table in response to the write operation.

9. A device comprising:

means for storing data associated with multiple logical addresses;

means for detecting that a data size of the data satisfies a threshold; and

means for providing the data to a data storage device using a single command in response to the data size satisfying the threshold.

10. The device of claim 9, wherein:

the means for storing includes a plurality of storage regions; and

the means for detecting is configured to detect that the data size satisfies the threshold based on a storage condition of a particular storage region of the plurality of storage regions that stores the data.

11. The device of claim 10, wherein the storage condition indicates that the particular storage region is full.

12. The device of claim 9, wherein the single command:

includes the data; and

indicates;

the multiple logical addresses; and

a number of write operations associated with the single command.

13. The device of claim 9, wherein the means for detecting is configured to initiate a flush operation to delete the data from a particular storage region of the means for storing in response to providing the data to the data storage device.

14. The device of claim 13, further comprising means for executing instructions, the means for detecting configured to notify the means for executing of the flush operation.

15. A method of operation of a device, the method comprising:

storing data at a storage area of a device, the data associated with multiple logical addresses; and

in response to detecting that a data size of the data satisfies a threshold, providing the data to a data storage device using a single command.

16. The method of claim 15, further comprising detecting that the data size satisfies the threshold by determining a storage condition of one or more storage regions of the storage area.

17. The method of claim 16, wherein the storage condition indicates that the one or more storage regions are full.

18. The method of claim 15, wherein the single command:

includes the data; and

indicates;

the multiple logical addresses; and

a number of write operations associated with the single command.

19. The method of claim 15, further comprising initiating a flush operation to free a particular storage region of the storage area in response to providing the data to the data storage device.

20. The method of claim 19, further comprising notifying a processor of the flush operation.