Structure of object stacks for driver

• US 7,549,006 B2
• Filed: 03/14/2007
• Issued: 06/16/2009
• Est. Priority Date: 05/26/2006
• Status: Active Grant

• Current Assignee: VIA Technologies Incorporated (VIA Technologies)
• Original Assignee: VIA Technologies Incorporated (VIA Technologies)
• Inventors: Liu, Chih Hao
• Primary Examiner(s): Dang; Khanh
• Application Number:
  US11/717,720
• Publication Number:
  US 20070276979A1
• Time in Patent Office: 825 Days
• Field of Search: 710/72, 710/74, 710/300, 710/302, 710/304, 703/4, 703/17, 703/21, 703/24, 717/168, 717/169, 717/174
• US Class Current: 710/302
• CPC Class Codes: G06F 13/102 where the programme performs an interfacing function, e.g. device driver G06F13/105 takes precedence; scheduling within device drivers G06F9/52; contention policies within device drivers G06F9/4881
• CPC Class Codes: G06F 3/0661 Format or protocol conversion arrangements

Abstract

A structure of object stacks for driver with hot plug function is provided, wherein the hot plug function is with serial ATA device, which can be supported by standard IDE driver. The structure comprises a bus device stack, at least one port device stack and at least one serial ATA device stack, which are connected to serial ATA devices at each of channels of the bus and each of channels within the bus respectively, wherein each of bus device stacks comprises an upper-level filter bus device object, and each of port device stacks comprises respectively a lower-level filter port device object and an upper-level filter port device object. Thus, the hot plug function can be supported according to the massage transmission interface and status monitoring for the bus by each of filter device objects.

Claims

1. A computer-executable driver stored in a computer-readable medium, comprising:

a bus device stack, used to serve as a communication interface adjacent to an IDE bus and a PCI bus, for communicating with said IDE bus, served as the upper level of said bus device stack, and said PCI bus, served as the lower level of said bus device stack;

at least one port device stack, designated on the upper level of said bus device stack and adjacent to at least one channel of said IDE bus, for operating functions of each channel; and

at least one IDE device stack, adjacent to at least one serial ATA device coupled to a specific channel, for being designated on the upper level of a related port device stack, which is adjacent to a related channel coupled to a related serial ATA device;

wherein, said bus device stack comprises an upper-level bus filter device object, said port device stack comprises a lower-level port filter device object and an upper-level port filter device object, and a hot plug function is provided by the use of said upper-level bus filter device object, said lower-level port filter device object and said upper-level port filter device object with bus status monitoring and signal transmission interfaces.

2. The computer-executable driver according to claim 1, wherein each IDE device stack further comprises a lower-level device filter object for enabling said related serial ATA device to support said hot plug function.

3. The computer-executable driver according to claim 1, wherein said bus device stack further comprises a host bus adapter physical device object and a host bus adapter function device object, and said host bus adapter physical device object, said host bus adapter function device object and said upper-level bus filter device object are in bottom-to-top order.

4. The computer-executable driver according to claim 3, wherein said upper-level bus filter device object can establish a bus input/output request package for asking said PCI what standard interface it belongs to.

5. The computer-executable driver according to claim 3, wherein said host bus adapter physical device object is established via a PCI driver.

6. The computer-executable driver according to claim 3, wherein said host bus adapter function device object is established via a bus driver.

7. The computer-executable driver according to claim 1, wherein said port device stack further comprises a channel physical device object and a channel function device object, and said channel physical device object, said lower-level port filter device object, said channel function device object, and said upper-level port filter device object are in bottom-to-top order.

8. The computer-executable driver according to claim 7, wherein said lower-level port filter device object receives an acknowledgement from said PCI bus about what standard interface it belongs to and defines a standard interface for each port filter device object.

9. The computer-executable driver according to claim 7, wherein said upper-level port filter device object establishes a port input/output request package for asking a low-level port filter what standard interface it belongs to.

10. The computer-executable driver according to claim 7, wherein said upper-level port filter device object detects an abnormal status and a hot-plug event at each channel, and informs an operating system to selectively operate a rescanning or a resetting procedure according to said abnormal status and said hot-plug event.

11. The computer-executable driver according to claim 7, wherein said channel physical device object is established via a bus driver.

12. The computer-executable driver according to claim 7, wherein said channel function device object is established via a port driver.

13. The computer-executable driver according to claim 2, wherein said IDE device stack further comprises a device physical device object and a device function device object, and said device physical device object, said lower-level device filter device object and said device function device object are in bottom-to-top order.

14. The computer-executable driver according to claim 13, wherein said device physical device object is established via a port driver.

15. The computer-executable driver according to claim 13, wherein said device function device object is established via an IDE device driver that drives said related serial ATA device.

16. The computer-executable driver according to claim 1, wherein each filter device object is established via a filter driver.

17. The computer-executable driver according to claim 2, wherein each filter device object is established via a filter driver.

18. The computer-executable driver according to claim 6, wherein said bus driver is a standard PCIIDE driver.

19. The computer-executable driver according to claim 12, wherein said port driver is a standard ATAPI driver.

20. The computer-executable driver according to claim 14, wherein said port driver is a standard ATAPI driver.