Hybrid resource manager

• US 8,042,122 B2
• Filed: 06/27/2007
• Issued: 10/18/2011
• Est. Priority Date: 06/27/2007
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Sledz, Dan, Mysore, Shivaram H.
• Primary Examiner(s): Wu; Qing
• Application Number:
  US11/823,239
• Publication Number:
  US 20090007153A1
• Time in Patent Office: 1,574 Days
• Field of Search: None
• US Class Current: 719/328
• CPC Class Codes: G06F 9/5011 the resources being hardware resources other than CPUs, Servers and Terminals
• CPC Class Codes: G06F 9/545 where tasks reside in different layers, e.g. user- and kernel-space

Abstract

A hybrid resource manager is provided for use in a computing environment. The hybrid resource manager serves as the single resource manager that cooperates with an operating system to manage each of the individual device drivers associated with the various functions of a multifunction hardware device. In one example the hybrid resource manager implements a consistent management and policy framework to prevent conflicts from arising when multiple functions are simultaneously requested by various applications.

Claims

1. A method for facilitating management of hardware resources used by a computing system, comprising:

accepting a resource acquisition request from a resource consumer through a multifunction API, to access any individual function performed by a multifunction hardware device, wherein the multifunction API is configured to facilitate (i) device enumeration of functions performed by the multifunction hardware device and (ii) device acquisition for authentication and verification purposes and (iii) locking of the multifunction hardware device after acquisition thereof;

communicating with a device driver associated with the multifunction hardware device and dedicated to the requested individual function; and

responsive to communication with the device driver, acquiring the multifunction hardware device to allow access to the multifunction hardware device in accordance with the resource acquisition request.

2. The method of claim 1 further comprising determining if the resource acquisition request conforms to a policy established for the functions performed by the multifunction hardware device.

3. The method of claim 2 further comprising denying acquisition of the multifunction hardware device if a policy conflict arises between a first resource consumer requesting a first function performed by the multifunction hardware device and a second resource consumer requesting a second function performed by the multifunction hardware device.

4. The method of claim 1 wherein the resource acquisition request is received from an application-level resource consumer.

5. A system for managing hardware resources used by a computing device, comprising:

a multifunction hardware device;

a public interface accepting consumer function calls from resource consumers for each function performed by the multifunction hardware device;

a hybrid resource manager for allocating different functional resources of the multifunction hardware device in response to the consumer function calls by managing different device drivers dedicated to each of the functions performed by the multifunction hardware device;

a plurality of device handlers for implementing communication protocols between the hybrid resource manager and the device drivers, wherein each of the device handlers is dedicated to a different functional resource of the multifunction hardware device; and

a policy module for establishing at least one predetermined policy to be implemented by the hybrid resource manager to allow acquisition of the multifunction hardware device to allow access to the multifunction hardware device in accordance with the consumer function calls.

6. The system of claim 5 further comprising:

at least one dedicated interface accepting requests from select resource consumers for one particular function performed by the multifunction hardware device, wherein the at least one dedicated interface allows contexts that are a subset of the functionality available if opened through the public interface; and

at least one dedicated resource manager for allocating resources for the particular function by managing a device driver dedicated to the particular function.

7. The system of claim 6 wherein the dedicated interface conforms to an API standard associated with the particular function performed by the multifunction hardware device.

8. The system of claim 5 wherein the public interface is configured to facilitate (i) device enumeration of the functions performed by the multifunction hardware device and (ii) device acquisition for authentication and verification purposes and (iii) locking of the multifunction hardware device after acquisition thereof.

9. The system of claim 5 wherein the policy module is configured to establish a predetermined conflict resolution policy for implementing resource allocation.

10. The system of claim 9 wherein the predetermined conflict resolution policy includes a priority-based resolution.

11. The system of claim 5 further comprising an authentication module for centralizing authentication of the multi function hardware device.

12. The system of claim 11 further comprising a device manager module for accepting content calls on behalf of the multi function hardware device to invoke the authentication module.

13. The system of claim 11 wherein the authentication module is configured to present a common authentication user interface independent of the functional resources being allocated.

14. The system of claim 5 wherein the hybrid resource manager resides at a system level within an operating system.

15. The system of claim 5 wherein the computing device is an electronic device selected from the group consisting of a personal computer, game console, cellular telephone, PDA, and set-top box (STB).

16. A computer-readable storage medium containing instructions which, when performed by one or more processors disposed in an electronic device, implement an operating system having a resource manager performing a method comprising:

accepting a resource acquisition request for access to any individual function performed by a multifunction hardware device;

using one of a plurality of device handlers to implement communication protocols between a hybrid resource manager and device drivers, wherein each of the device handlers is dedicated to a different functional resource of the multifunction hardware resource, and the device handler used is the one that corresponds to a device driver dedicated to the individual function performed by the requested multifunction hardware device;

communicating with the device driver associated with the multifunction hardware device and dedicated to the requested individual function; and

responsive to communication with the device driver, acquiring the multifunction hardware device to allow access to the multifunction hardware device in accordance with the resource acquisition request.

17. The computer-readable medium of claim 16 further comprising determining if the resource acquisition request conforms to a policy established for functions offered by the multifunction hardware device.

18. The computer-readable medium of claim 17 further comprising denying acquisition of the multi function hardware device if a policy conflict arises between a first resource consumer requesting a first function performed by the multi function hardware device and a second resource consumer requesting a second function performed by multifunction hardware device.