Pass-through information transfers inserted after a continued primitive in serial communications between a device and a host
View Patent ↗A device communicatively coupled to a host in a Serial Advanced Technology Attachment (SATA) format. The device includes a processor to control operations in the device and a serial interface to control serial communication with the host in accordance with the SATA format. The serial interface, after the transmission of a continued primitive, inserts pass-through information to the host within or outside of a frame information structure (FIS). If the host is not pass-through enabled, the host ignores the pass-through information. However, if the host is pass-through enabled, the host recognizes the pass-through information.
1. A device communicatively coupled to a host in a Serial Advanced Technology Attachment (SATA) format, the device comprising:
a processor to control operations in the device; and
a serial interface to control serial communication with the host in accordance with the SATA format, including:
after a transmission of a continued primitive by the device, inserting pass-through information to the host by replacing pseudo-random data with a message information structure (MIS) that includes the pass-through information, prior to the device sending a primitive;
wherein the host is one of pass-through enabled or not pass-through enabled, and if the host is not pass-through enabled, the host ignores the pass-through information, whereas if the host is pass-through enabled, the host recognize the pass-through information.
2. The device of claim 1 , wherein the MIS transmitted by the device includes a start of message (SOM) primitive sequence to indicate a beginning of the pass-through information to be transmitted and an end of message (EOM) primitive sequence to indicate that the pass-through information has been transmitted.
3. The device of claim 1 , wherein the MIS and the pass-through information are scrambled.
4. The device of claim 1 , wherein the pass-through information includes at least one of message, data, status, or a command.
5. The device of claim 1 , wherein the inserting of the pass-through information between the device and the host occurs at a link layer.
6. The device of claim 1 , wherein the message information structure (MIS) and the pass-through information are transmitted during an idle (SYNC) phase.
7. The device of claim 1 , wherein the message information structure (MIS) and the pass-through information are transmitted during at least one of a transmit ready (X_RDY) HOLD phase, a HOLD Acknowledge phase, a wait for termination (WTRM) phase, a receipt ready (R_RDY), a receipt in progress (R_IP) phase, or a receipt OK (R_OK) phase.
8. The device of claim 1 , wherein the transmission of the pass-through information between the device and the host occurs in a simplex mode.
9. The device of claim 1 , wherein the transmission of the pass-through information between the device and the host occurs in a half-duplex mode.
10. The device of claim 1 , wherein the transmission of the pass-through information between the device and the host occurs in a full duplex mode.
11. The device of claim 1 , wherein the device is a disk drive.
12. A host communicatively coupled to a device in a Serial Advanced Technology Attachment (SATA) format, the host comprising:
a processor to control operations in the host; and
a serial interface to control serial communication with the device in accordance with the SATA format, including:
after a transmission of a continued primitive by the host, inserting pass-through information to the device by replacing pseudo-random data with a message information structure (MIS) that includes the pass-through information, prior to the host sending a primitive;
wherein the device is one of pass-through enabled or not pass-through enabled, and if the device is not pass-through enabled, the device ignores the pass-through information, whereas if the device is pass-through enabled, the device recognize the pass-through information.
13. The host of claim 12 , wherein the MIS transmitted by the host includes a start of message (SOM) primitive sequence to indicate a beginning of the pass-through information to be transmitted and an end of message (EOM) primitive sequence to indicate that the pass-through information has been transmitted.
14. The host of claim 12 , wherein the MIS and the pass-through information are scrambled.
15. The host of claim 12 , wherein the pass-through information includes at least one of message, data, status, or a command.
16. The host of claim 12 , wherein the inserting of the pass-through information between the host and the device occurs at a link layer.
17. The host of claim 12 , wherein the message information structure (MIS) and the pass-through information are transmitted during an idle (SYNC) phase.
18. The host of claim 12 , wherein the message information structure (MIS) and the pass-through information are transmitted during at least one of a transmit ready (X_RDY) HOLD phase, a HOLD Acknowledge phase, a wait for termination (WTRM) phase, a receipt ready (R_RDY), a receipt in progress (R_IP) phase, or a receipt OK (R_OK) phase.
19. The host of claim 12 , wherein the transmission of the pass-through information between the host and the device occurs in a simplex mode.
20. The host of claim 12 , wherein the transmission of the pass-through information between the host and the device occurs in a half-duplex mode.
21. The host of claim 12 , wherein the transmission of the pass-through information between the host and the device occurs in a full duplex mode.
22. The host of claim 12 , wherein the device is a disk drive.
23. A device communicatively coupled to a host in a Serial Advanced Technology Attachment (SATA) format, the device comprising:
a processor to control operations in the device; and
a serial interface to control serial communication with the host in accordance with the SATA format, including:
after a transmission of a continued primitive by the host, the host inserts pass-through information to the device by replacing pseudo-random data with a message information structure (MIS) that includes the pass-through information, prior to the host sending a primitive;
wherein the device is one of pass-through enabled or not pass-through enabled, and if the device is not pass-through enabled, the device ignores the pass-through information, whereas if the device is pass-through enabled, the device recognize the pass-through information.
24. The device of claim 23 , wherein the MIS transmitted by the device includes a start of message (SOM) primitive sequence to indicate a beginning of the pass-through information to be transmitted and an end of message (EOM) primitive sequence to indicate that the pass-through information has been transmitted.
25. The device of claim 23 , wherein the MIS and the pass-through information are scrambled.
26. The device of claim 23 , wherein the pass-through information includes at least one of message, data, status, or a command.
27. The device of claim 23 , wherein the inserting of the pass-through information between the device and the host occurs at a link layer.
28. The device of claim 23 , wherein the message information structure (MIS) and the pass-through information are transmitted during an idle (SYNC) phase.
29. The device of claim 23 , wherein the message information structure (MIS) and the pass-through information are transmitted during at least one of a transmit ready (X_RDY) HOLD phase, a HOLD Acknowledge phase, a wait for termination (WTRM) phase, a receipt ready (R_RDY), a receipt in progress (R_IP) phase, or a receipt OK (R_OK) phase.
30. The device of claim 23 , wherein the device is a disk drive.