Adapter card for on-demand formatting of data transfers between network devices

• US 20060112184A1
• Filed: 11/22/2004
• Published: 05/25/2006
• Est. Priority Date: 11/22/2004
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Kuo, Lih-Chung
• Application Number:
  US10/994,856
• Publication Number:
  US 20060112184A1
• Time in Patent Office: Days
• US Class Current: 709/236
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices

Abstract

An adapter card employs a multi-formatting execution unit, one or more descriptor queues and one or more communication channels. The multi-formatting execution unit formats each data transfer between two or more network devices based on one of a plurality of data formatting schemes with each data formatting scheme being at least partially dissimilar from the other data formatting schemes. The descriptor queue(s) store one or more job descriptors with each job descriptor being indicative of a selection of one of the data formatting schemes for formatting a corresponding data transfer between the network devices. The communication channels operable to selectively connect the descriptor queue(s) to the multi-formatting execution unit to facilitate an electrical communication of each one job descriptor from the descriptor queue(s) to the multi-formatting execution unit.

Claims

1. An adapter card for formatting data transfers between at least two network devices, the adapter card comprising:

a multi-formatting execution unit operable to format each data transfer between the at least two network devices based on one of a plurality of data formatting schemes, each data formatting scheme being at least partially dissimilar from the other data formatting schemes;

at least one descriptor queue, each descriptor queue being operable to store at least one job descriptor, each job descriptor being indicative of a selection of one of the plurality of data formatting schemes for formatting a corresponding data transfer between the at least two network devices; and

at least one communication channel operable to selectively connect the at least one descriptor queue to the multi-formatting execution unit to facilitate each electrical communication of each one job descriptor from the at least one descriptor queue to the multi-formatting execution unit.

2. The adapter card of claim 1,

wherein a first data formatting scheme among the plurality of data formatting schemes is a direct access storage device formatting scheme;

and

wherein a second data formatting scheme among the plurality of data formatting schemes is a tape formatting scheme.

3. The adapter card of claim 1, wherein the multi-formatting execution unit includes:

a queue controller operable to control each electrical communication between the multi-formatting execution unit and the at least one descriptor queue as a function of a queue swapping policy representative of a selective queue swapping among at least two descriptor queues.

4. The adapter card of claim 1, wherein the multi-formatting execution unit is operable to format a first data transfer between the at least two network devices based on a first data formatting scheme among the plurality of data formatting schemes in response to a first electrical communication of a first job descriptor from one of the at least one descriptor queue through one of the at least one communication channel, the first job descriptor being indicative of the formatting of the first data transfer between the at least two network devices based on the first data formatting scheme.

5. The adapter card of claim 4,

wherein the at least one communication channel includes a first communication channel operable to connect a first descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the first descriptor queue through the first communication channel to the multi-formatting execution unit.

6. The adapter card of claim 4, wherein the multi-formatting execution unit is operable to format a second data transfer between the at least two network devices based on a second data formatting scheme among the plurality of data formatting schemes in response to a second electrical communication of a second job descriptor from one of the at least one descriptor queue through one of the at least one communication channel, the second job descriptor being indicative of the formatting of the second data transfer between the at least two network devices based on the second data formatting scheme.

7. The adapter card of claim 6,

wherein the at least one communication channel includes a first communication channel operable to connected a first descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the first descriptor queue through the first communication channel to the multi-formatting execution unit;

and

wherein the at least one communication channel further includes a second communication channel operable to connect a second descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the second descriptor queue through the first communication channel to the multi-formatting execution unit.

8. The adapter card of claim 1, further comprising:

at least one card processor; and

at least one buffer memory coupled to the at least one processor, wherein the at least one buffer memory stores instructions operable with the at least one card processor to perform operations including;

generating the at least one job descriptor in response to an electrical communication of at least one data transfer command from the at least two network devices, each data transfer command requesting a particular data transfer between the at least two network devices based on one of the plurality of data formatting schemes;

managing a storage of at least one of the at least one job descriptor in the at least one card buffer memory; and

managing a storage of an address pointer in the at least one descriptor queue for each job descriptor stored in the at least one card buffer memory.

9. The adapter card of claim 1, further comprising:

at least one card processor; and

at least one buffer memory coupled to the at least one processor, wherein the at least one buffer memory stores instructions operable with the at least one card processor to perform operations including;

generating the at least one job descriptor in response to an electrical communication of at least one data transfer command from the at least two network devices, each data transfer command requesting a particular data transfer between the at least two network devices based on one of the plurality of data formatting schemes; and

managing a storage of at least one of the at least one job descriptor in the at least one descriptor queue.

10. An adapter card, comprising:

a formatter operable to format each data transfer between at least two network devices as a function of at least one job descriptor, each job descriptor being indicative of a selection of one of the plurality of data formatting schemes for formatting a corresponding data transfer between the at least two network devices, each data formatting scheme being at least partially dissimilar from the other data formatting schemes;

at least one card processor; and

at least one buffer memory coupled to the at least one processor, wherein the at least one buffer memory stores instructions operable with the at least one card processor to perform operations including;

generating the at least one job descriptor in response to an electrical communication of at least one data transfer command from the at least two network devices, each data transfer command requesting a particular data transfer between the at least two network devices based on one of the plurality of data formatting schemes;

managing a storage of at least one of the at least one job descriptor in the at least one card buffer memory, and

managing a storage of an address pointer in the formatter for each job descriptor stored in the at least one card buffer memory.

11. The adapter card of claim 10,

wherein a first data formatting scheme among the plurality of data formatting schemes is a direct access storage device formatting scheme;

and

wherein a second data formatting scheme among the plurality of data formatting schemes is a tape formatting scheme.

12. The adapter card of claim 10, wherein the formatter includes:

a multi-formatting execution unit operable to execute each job descriptor;

at least one descriptor queue, each descriptor queue being operable to store the at least one job descriptor, and

at least one communication channel operable to selectively connect the at least one descriptor queue to the multi-formatting execution unit to facilitate each electrical communication of each job descriptor from the at least one descriptor queue to the multi-formatting execution unit.

13. The adapter card of claim 12, wherein the multi-formatting execution unit includes:

a queue controller operable to control each electrical communication between the multi-formatting execution unit and the at least one descriptor queue as a function of a queue swapping policy representative of a selective queue swapping among at least two descriptor queues.

14. The adapter card of claim 12, wherein the multi-formatting execution unit is operable to format a first data transfer between the at least two network devices based on a first data formatting scheme among the plurality of data formatting schemes in response to a first electrical communication of a first job descriptor from one of the at least one descriptor queue through one of the at least one communication channel, the first job descriptor being indicative of the formatting of the first data transfer between the at least two network devices based on the first data formatting scheme.

15. The adapter card of claim 14,

wherein the at least one communication channel includes a first communication channel operable to connect a first descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the first descriptor queue through the first communication channel to the multi-formatting execution unit.

16. The adapter card of claim 14, wherein the multi-formatting execution unit is operable to format a second data transfer between the at least two network devices based on a second data formatting scheme among the plurality of data formatting schemes in response to a second electrical communication of a second job descriptor from one of the at least one descriptor queue through one of the at least one communication channel, the second job descriptor being indicative of the formatting of the second data transfer between the at least two network devices based on the second data formatting scheme.

17. The adapter card of claim 16,

wherein the at least one communication channel includes a first communication channel operable to connected a first descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the first descriptor queue through the first communication channel to the multi-formatting execution unit;

and

wherein the at least one communication channel further includes a second communication channel operable to connect a second descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the second descriptor queue through the first communication channel to the multi-formatting execution unit.

18. An adapter card, comprising:

a formatter operable to format each data transfer between at least two network devices as a function of at least one job descriptor, each job descriptor being indicative of a selection of one of the plurality of data formatting schemes for formatting a corresponding data transfer between the at least two network devices, each data formatting scheme being at least partially dissimilar from the other data formatting schemes;

at least one card processor

at least one buffer memory coupled to the at least one processor, wherein the at least one buffer memory stores instructions operable with the at least one card processor to perform operations including;

generating the at least one job descriptor in response to an electrical communication of at least one data transfer command from the at least two network devices, each data transfer command requesting a particular data transfer between the at least two network devices based on one of the plurality of data formatting schemes;

managing a storage of at least one of the at least one job descriptor in the at least one card buffer memory, and

managing a storage of an address pointer in the formatter for each job descriptor stored in the at least one card buffer memory.

19. The adapter card of claim 18,

wherein a first data formatting scheme among the plurality of data formatting schemes is a direct access storage device formatting scheme;

and

wherein a second data formatting scheme among the plurality of data formatting schemes is a tape formatting scheme.

20. The adapter card of claim 18, wherein the formatter includes:

a multi-formatting execution unit operable to execute each job descriptor;

at least one descriptor queue, each descriptor queue being operable to store the at least one job descriptor, and

at least one communication channel operable to selectively connect the at least one descriptor queue to the multi-formatting execution unit to facilitate each electrical communication of each job descriptor from the at least one descriptor queue to the multi-formatting execution unit.

21. The adapter card of claim 20, wherein the multi-formatting execution unit includes:

a queue controller operable to control each electrical communication between the multi-formatting execution unit and the at least one descriptor queue as a function of a queue swapping policy representative of a selective queue swapping among at least two descriptor queues.

22. The adapter card of claim 20, wherein the multi-formatting execution unit is operable to format a first data transfer between the at least two network devices based on a first data formatting scheme among the plurality of data formatting schemes in response to a first electrical communication of a first job descriptor from one of the at least one descriptor queue through one of the at least one communication channel, the first job descriptor being indicative of the formatting of the first data transfer between the at least two network devices based on the first data formatting scheme.

23. The adapter card of claim 22,

wherein the at least one communication channel includes a first communication channel operable to connect a first descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the first descriptor queue through the first communication channel to the multi-formatting execution unit.

24. The adapter card of claim 22, wherein the multi-formatting execution unit is operable to format a second data transfer between the at least two network devices based on a second data formatting scheme among the plurality of data formatting schemes in response to a second electrical communication of a second job descriptor from one of the at least one descriptor queue through one of the at least one communication channel, the second job descriptor being indicative of the formatting of the second data transfer between the at least two network devices based on the second data formatting scheme.

25. The adapter card of claim 24,

wherein the at least one communication channel includes a first communication channel operable to connected a first descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the first descriptor queue through the first communication channel to the multi-formatting execution unit;

and

wherein the at least one communication channel further includes a second communication channel operable to connect a second descriptor queue to the multi-formatting execution unit while the remaining communication channels are disconnected from the multi-formatting execution unit to facilitate the first electrical communication of the first job descriptor from the second descriptor queue through the first communication channel to the multi-formatting execution unit.

26. A signal bearing medium tangibly embodying a program of machine-readable instructions executable by at lease one processor to perform operations to format data transfers between at least two network devices, the operations comprising:

generating a job descriptor for each data transfer between the at least two network device, each job descriptor being indicative of a selection of one of a plurality of data formatting schemes for formatting a corresponding data transfer between the at least two network devices, each data formatting scheme being at least partially dissimilar from the other data formatting schemes; and

formatting each data transfer between the at least two network devices based on a corresponding job descriptor.

27. The signal bearing medium of claim 26,

wherein a first data formatting scheme among the plurality of data formatting schemes is a direct access storage device formatting scheme;

and

wherein a second data formatting scheme among the plurality of data formatting schemes is a tape formatting scheme.