System and method for providing personality switching in a solid state drive device
View Patent ↗A solid state drive (SSD) device includes a Peripheral Component Interconnect-Express (PCIe) interface, a non-volatile storage media, and a memory that stores code, the code including an Advanced Host Controller Interface (AHCI) controller, and a Non-Volatile Memory-Express (NVMe) controller. The SSD device is operable to select one of the AHCI controller and the NVMe controller to process data storage commands between the PCIe interface and the non-volatile storage media.
1. A solid state drive (SSD) device comprising:
a Peripheral Component Interconnect-Express (PCIe) interface;
a non-volatile storage media; and
a memory that stores code, the code including:
an Advanced Host Controller Interface (AHCI) controller; and
a Non-Volatile Memory-Express (NVMe) controller;
wherein the SSD device is operable to select one of the AHCI controller and the NVMe controller to process data storage commands between the PCIe interface and the non-volatile storage media, and wherein the selected one of the AHCI controller and the NVMe controller is a default controller and the other one of the AHCI controller and the NVMe controller is a secondary controller.
2. The SSD device of claim 1 , further comprising:
a reversal detector module operable to:
detect that a host system coupled to the PCIe interface accesses the SSD device via a first driver associated with the default controller; and
provide an indication to the host system that the default controller is associated with the first default controller.
3. The SSD device of claim 2 , wherein in detecting that the host system accesses the SSD device via the first driver is based on a hardware detection.
4. The SSD device of claim 3 , wherein the hardware detection includes the reversal detector module further operable to detect that a pin #8 of a Socket ⅔ connector is pulled to a circuit high voltage level.
5. The SSD device of claim 2 , wherein in detecting that the host system accessed the SSD device via the first driver is based on a vendor specific command by the SSD device from the host system.
6. The SSD device of claim 2 , wherein the reversal detector module is further operable to:
detect that the host system accesses the SSD device via a second driver associated with the secondary controller; and
set the secondary controller to process data storage commands between the PCIe interface and the non-volatile storage media in response to detecting that the host system accesses the SSD device via the second driver.
7. The SSD device of claim 1 , wherein the SSD device is further operable provide an indication to a host system coupled to the PCIe interface that the select one of the AHCI controller and the NVMe controller processes data storage commands between the PCIe interface and the non-volatile storage media.
8. The SSD device of claim 7 , wherein the indication is provided based upon a hardware configuration of the SSD device.
9. The SSD device of claim 8 , wherein the hardware configuration includes a pin #6 of a Socket ⅔ connector that is pulled to a circuit ground.
10. A method comprising:
storing, on a memory of a solid state drive (SSD) device:
code for an Advanced Host Controller Interface (AHCI) controller; and
code for a Non-Volatile Memory-Express (NVMe) controller;
selecting one of the AHCI controller and the NVMe controller to process data storage commands between a Peripheral Component Interconnect-Express (PCIe) interface of the SSD device and a non-volatile storage media of the SSD device, wherein the select one of the AHCI controller and the NVMe controller is a default controller and the other one of the AHCI controller and the NVMe controller is a secondary controller.
11. The method of claim 10 , further comprising:
detecting, by a reversal detector module of the SSD device, that a host system coupled to the PCIe interface accesses the SSD device via a first driver associated with the default controller; and
providing, by the reversal detector module, an indication to the host system that the default controller is associated with the first default controller.
12. The method of claim 11 , wherein detecting that the host system accesses the SSD device is based on a hardware detection.
13. The method of claim 11 , wherein detecting that the host system accessed the SSD device is based on a vendor specific command from the host system.
14. The method of claim 10 , further comprising:
detecting, by the reversal detector module, that the host system accesses the SSD device via a second driver associated with the secondary controller; and
setting, by the reversal detector module, the secondary controller to process data storage commands between the PCIe interface and the non-volatile storage media in response to detecting that the host system accesses the SSD device via the second driver.
15. The method of claim 10 , further comprising:
providing, by the SSD device, an indication to a host system coupled to the PCIe interface that the select one of the AHCI controller and the NVMe controller processes data storage commands between the PCIe interface and the non-volatile storage media.
16. A non-transitory computer-readable medium including code for performing a method, the method comprising:
storing, on a memory of a solid state drive (SSD) device:
code for an Advanced Host Controller Interface (AHCI) controller; and
code for a Non-Volatile Memory-Express (NVMe) controller;
selecting one of the AHCI controller and the NVMe controller to process data storage commands between a Peripheral Component Interconnect-Express (PCIe) interface of the SSD device and a non-volatile storage media of the SSD device, wherein the select one of the AHCI controller and the NVMe controller is a default controller and the other one of the AHCI controller and the NVMe controller is a secondary controller.
17. The computer-readable medium of claim 16 , the method further comprising:
detecting, by a reversal detector module of the SSD device, that a host system coupled to the PCIe interface accesses the SSD device via a first driver associated with the default controller; and
providing, by the reversal detector module, an indication to the host system that the default controller is associated with the first default controller.
18. The computer-readable medium of claim 16 , the method further comprising:
detecting, by the reversal detector module, that the host system accesses the SSD device via a second driver associated with the secondary controller; and
setting, by the reversal detector module, the secondary controller to process data storage commands between the PCIe interface and the non-volatile storage media in response to detecting that the host system accesses the SSD device via the second driver.
19. The computer-readable medium of claim 16 , the method further comprising:
providing, by the SSD device, an indication to a host system coupled to the PCIe interface that the select one of the AHCI controller and the NVMe controller processes data storage commands between the PCIe interface and the non-volatile storage media.