Storage device which stores write data and an authentication code into a protected memory block and method of operating the same
Provided herein may be a storage device having improved write performance. The storage device may include a memory device and a memory controller. The memory controller may generate check-in information indicating start of a program operation in response to a write request received from the host, control the memory device to perform a program operation of storing data received from the host in a target area of the memory device, generate check-out information indicating whether the program operation has succeeded, and provide a write result response including the check-out information to the host in response to a write return request received from the host.
1. A storage device comprising:
a memory device; and
a memory controller configured to:
generate check-in information indicating start of a program operation and a target area on which a program operation is to be performed in response to a write request received from a host,
control the memory device to perform the program operation of storing data received from the host in the target area of the memory device,
generate check-out information indicating whether the program operation has succeeded, and
provide a write result response including the check-out information to the host in response to a write return request received from the host,
wherein the memory device is configured to store the check-in information, the data and the check-out information successively in the target area.
2. The storage device according to claim 1 , wherein the memory controller comprises:
an operation controller configured to control the memory device to store the check-in information, the check-out information, and the data in the target area; and
an authentication controller configured to generate authentication information indicating whether the data has integrity using a host authentication code received from the host, the data, and an authentication key.
3. The storage device according to claim 2 , wherein the operation controller controls the memory device to store the check-in information in a check-in area including a start point in the target area, store the check-out information in a check-out area including an end point in the target area, and store the data in a data area in the target area.
4. The storage device according to claim 2 , wherein the operation controller provides to the host a write request check response indicating whether the write request has been received in response to the write request, provides to the host a result request check response indicating whether a result request has been received in response to the result request received from the host, and provides to the host the write result response indicating a result of the write request in response to a result return request.
5. The storage device according to claim 2 , wherein the operation controller comprises:
a check information generator configured to generate the check-in information including information about the target area in response to the write request, and generate the check-out information including the authentication information after the program operation is completed;
a map manager configured to update map data corresponding to the target area based on the check-out information.
6. The storage device according to claim 2 , wherein the authentication controller comprises:
an authentication code generator configured to generate a device authentication code using the data and the authentication key; and
an authentication code comparator configured to generate the authentication information based on whether the device authentication code matches the host authentication code.
7. The storage device according to claim 2 , wherein the operation controller controls the memory device to read program data stored in the target area based on the check-in information if the storage device is recovered from a sudden power off event that occurred after the check-in information has been generated, generates the check-out information including authentication information indicating whether the program data has integrity, and updates map data corresponding to the target area based on the check-out information.
8. The storage device according to claim 7 , wherein the authentication controller generates a device authentication code using the program data and the authentication key, and generates the authentication information indicating whether the program data has integrity based on a result of comparison between the device authentication code and a host authentication code included in the check-in information.
9. A method of operating a storage device, comprising:
generating check-in information indicating start of a program operation and a target area on which the program operation is to be performed, in response to a write request received from a host;
providing to the host a write request check response indicating whether the write request has been received;
performing the program operation of storing data in a data area of the target area;
generating check-out information indicating whether the program operation has succeeded after the program operation has been completed; and
providing a write result response including the check-out information to the host in response to a result return request received from the host,
wherein the check-in information, the data and the check-out information are successively stored in the target area.
10. The method according to claim 9 , further comprising:
storing the check-in information in a check-in area including a start point in the target area;
storing the check-out information in a check-out area including an end point in the target area.
11. The method according to claim 9 , further comprising, after the generating of the check-in information:
generating authentication information indicating whether the data has integrity using the data received from the host and an authentication key.
12. The method according to claim 11 , wherein the generating of the authentication information is performed in parallel with the performing of the program operation.
13. The method according to claim 11 , wherein the generating of the authentication information comprises:
generating a device authentication code using the data and the authentication key; and
generating the authentication information based on a result of comparison between the device authentication code and a host authentication code received from the host.
14. The method according to claim 9 , further comprising, after the providing of the write request check response to the host:
providing to the host, in response to a result request received from the host, a result request check response indicating whether the result request has been received.
15. The method according to claim 9 , further comprising:
reading program data stored in the target area based on the check-in information if the storage device is recovered from a sudden power off that occurred after generating the check-in information;
generating a device authentication code using the program data and an authentication key;
generating authentication information indicating whether the program data has integrity based on a result of comparison between the device authentication code and a host authentication code included in the check-in information;
generating the check-out information including the authentication information indicating whether the program data has integrity; and
updating map data corresponding to the target area based on the check-out information.
16. A method of operating a storage device, comprising:
generating check-in information indicating start of a program operation and a target area on which the program operation is to be performed, in response to a write request received from a host;
providing to the host a write request check response indicating whether the write request has been received;
generating authentication information indicating whether data has integrity using the data received from the host and an authentication key;
performing the program operation of storing the data in a data area of the target area based on the authentication information;
generating check-out information indicating whether the program operation has succeeded; and
providing a write result response including the check-out information to the host in response to a result return request received from the host,
wherein the check-in information, the data and the check-out information are successively stored in the target area.
17. The method according to claim 16 , further comprising:
storing the check-in information in a check-in area including a start point in the target area; and
storing the check-out information in a check-out area including an end point in the target area.
18. The method according to claim 16 , wherein the generating of the authentication information comprises:
generating a device authentication code using the data and the authentication key; and
generating the authentication information based on a result of comparison between the device authentication code and a host authentication code received from the host.
19. The method according to claim 16 , further comprising:
reading program data stored in the target area based on the check-in information if the storage device is recovered from a sudden power off that occurred after generating the check-in information;
generating a device authentication code using the program data and the authentication key;
generating authentication information indicating whether the program data has integrity based on a result of comparison between the device authentication code and a host authentication code included in the check-in information;
generating the check-out information including the authentication information indicating whether the program data has integrity; and
updating map data corresponding to the target area based on the check-out information.
20. The method according to claim 16 , further comprising, after the providing of the write request check response to the host:
providing to the host, in response to a result request received from the host, a result request check response indicating whether the result request has been received.