System for automatic hardware identification and configuration where instance values are unique within the computer system and resource requirement conflicts are resolved by modifying resource settings

• US 5,974,474 A
• Filed: 03/14/1997
• Issued: 10/26/1999
• Est. Priority Date: 03/15/1996
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: Novell Incorporated (Open Text Corporation)
• Inventors: Jorgensen, Karl G., Dakins, Mark, Rex, Michael E., Nordin, Jeffrey A., Krishnaswami, Prabhakar, Furner, Rey R.
• Primary Examiner(s): Lee, Thomas C.
• Assistant Examiner(s): YUAN, CHIEN H
• Application Number:
  US08/816,104
• Time in Patent Office: 956 Days
• Field of Search: 320/112, 358/468, 395/284, 395/651, 395/652, 395/742, 707/3, 710/8, 710/9, 710/10, 710/100, 710/104, 710/269, 713/1, 713/2
• US Class Current: 710/8
• CPC Class Codes: G06F 13/10 Program control for peripheral devices G06F13/14 - G06F13/42 take precedence
• CPC Class Codes: G06F 9/4411 Configuring for operating with peripheral devices; Loading of device drivers

Abstract

An automatic identification system in a computer system having a plurality of hardware instances located on hardware devices in the computer system. The computer system includes a plurality of physical slots each configured to receive a hardware device and referenced by a slot number. The system comprises means for assigning a hardware instance value to each of the plurality of hardware instances, the hardware instance value being unique within the computer system when two or more of the plurality of physical slots are assigned a slot number that is not unique within the computer system. Advantageously, the hardware instance value is unique within the computer system when two or more of the plurality of hardware instances are located on one of the hardware devices or when one or more of the hardware devices is installed in an expansion chassis coupled to the computer system. The hardware instance value is also unique within the computer system when one of the hardware devices includes one or more of the hardware instances coupled to an I/O bus within the hardware device or when one or more of the hardware devices is installed on a system board in the computer system. In one embodiment of the invention, the hardware instance value is a hardware instance number. In another embodiment, the hardware instance value is a hardware instance name that is easily identifiable by the user.

Claims

1. A automatic identification system in a computer system having a plurality of hardware instances located on hardware devices in the computer system, the computer system including a plurality of physical slots each configured to connect to a hardware device and referenced by a slot number, the system comprising:

means for assigning a hardware instance value to each of the plurality of hardware instances, said hardware instance value being unique within the computer system and based upon the physical slot number of the physical slot to which the hardware device is connected, said means configured to assign said unique hardware instance regardless of a quantity of physical slots that are assigned a slot number that is not unique within the computer system.

2. The system of claim 1, wherein two or more of the plurality of hardware instances are located on one of the hardware devices.

3. The system of claim 1, wherein one or more of the hardware devices is installed in an expansion chassis coupled to the computer system.

4. The system of claim 1, wherein one of the hardware devices includes one or more of the hardware instances coupled to an I/O bus within the hardware device.

5. The system of claim 1, wherein one or more of the hardware devices is installed on a system board in the computer system.

6. The system of claim 1, wherein said hardware instance value is a hardware instance number.

7. The system of claim 1, wherein said hardware instance value is a hardware instance name.

8. The system of claim 1,

wherein each of the hardware devices contains a bus tag and a device identifier for each hardware instance on the hardware device, and

wherein, for each hardware instance, said hardware instance value is a hardware instance number associated with the bus tag and device identifier for said each hardware instance.

9. The system of claim 6,

wherein a first one or more of the plurality of physical slots is assigned a slot number unique within the computer system, and

wherein, for each the plurality of hardware instances installed within said first physical slots, said hardware instance number is equal to said unique slot number.

10. The system of claim 6,

wherein a second two or more of the plurality of physical slots is assigned a slot number that is non-unique within the computer system, and

wherein, for each the plurality of hardware instances installed within said second physical slots, said hardware instance number is equal to said unique slot number and a sequence number associated with said hardware instance, said sequence number being unique for each said hardware instance in said physical slot.

11. The system of claim 6,

wherein one or more third hardware instances do not correspond to a physical slot within the computer system, and

wherein, for each the third hardware instances, said hardware instance number is equal to said unique slot number and a sequence number associated with said hardware instance, said sequence number being unique for each said third hardware instance.

12. The system of claim 1, wherein the physical slot number of said two or more of the plurality of hardware instances is the same value.

13. An identification and configuration system in a computer system having a hardware instance and a plurality of drivers capable of supporting the hardware instance, the hardware instance including a plurality of resource settings, the system comprising:

means for determining a relative capability of each of the plurality of drivers to support the hardware instance;

means for selecting an optimal driver having a capability to support the hardware instance than is greater than a capability of other drivers to support the instance; and

means for resolving conflicts between a resource setting of the hardware instance and a resource setting of another hardware instance, wherein, for each identified resource setting conflict, said means for resolving either modifies the resource setting in the hardware instance to a non-conflicting setting or, if unable to do so, prevents loading of the selected optimal driver.

14. The system of claim 13, further comprising:

means for installing said optimal driver.

15. The system of claim 13, wherein said capability of a driver to support the hardware instance is represented by a value derived from one or more factors, each reflecting a driver'"'"'s capability to support a particular hardware instance.

16. The system of claim 15, wherein said factors are weighted in accordance with a degree to which the factor reflects a driver'"'"'s capability to support a particular hardware instance.

17. The system of claim 16, wherein said value is the sum of said weights of said factors.

18. The system of claim 15, wherein said factors are associated with a first product identifier identifying the hardware instance, and plurality of second product identifiers, each identifying, for an associated one of said plurality of drivers, the hardware instances supported by said associated driver.

19. The system of claim 18, wherein a first factor is a similarity between said first and second product identifier.

20. The system of claim 18, wherein said first factor is weighted value according to a similarity between said first and second product identifier.

21. The system of claim 18, wherein said selecting means comprises:

means for comparing portions of said first and second product identifiers, wherein said factors include second factors, each representing a similarity between said compared portions of said first and second product identifiers.

22. The system of claim 19, wherein said second factors are weighted values according to a similarity between said corresponding portions of said first and second product identifier.

23. The system of claim 22, wherein said degree of similarity is a degree of difference between string values of said compared product identifier subfields.

24. The system of claim 23, wherein said portions of said first and second product identifiers comprise:

a model ID identifying the model of the associated hardware instance;

a vendor ID identifying the vendor of the hardware instance; and

a vendor device ID identifying the device number of the hardware instance assigned by the vendor.

25. The system of claim 24, wherein said portions of said first and second product identifiers further comprise:

a product revision identifying a version of the hardware instance.

26. The system of claim 25, wherein said portions of said first and second product identifiers further comprise:

a subvendor ID identifies the vendor which manufactures the particular chip or hardware component in the hardware instance; and

a subvendor device ID identifies the vendor-assigned device number for the components of the hardware instance.

27. An automatic identification and configuration system in a computer system having a plurality of hardware instances located on hardware devices in the computer system, the computer system including a plurality of physical slots each configured to receive a hardware device and referenced by a slot number, and a plurality of drivers capable of supporting the hardware instances, the system comprising:

means for assigning a hardware instance value to each of the plurality of hardware instances, said hardware instance value being unique within the computer system;

means for determining a relative capability of each of the plurality of drivers to support the hardware instance;

means for selecting an optimal driver having a capability to support the hardware instance that is greater than a capability of other drivers to support the hardware instance;

means for resolving conflicts between a resource setting of the hardware instance and a resource setting of another hardware instance, wherein, for each identified resource setting conflict, said means for resolving either modifies the resource setting in the first hardware configuration information to a non-conflicting setting or, if unable to do so, prevents loading of the selected optimal driver; and

means for installing said optimal driver.

28. The system of claim 27, wherein said capability of a driver to support the hardware instance is represented by a value derived from one or more factors, each reflecting a driver'"'"'s capability to support a particular hardware instance.

29. The system of claim 28, wherein said factors are weighted in accordance with a degree to which the factor reflects a driver'"'"'s capability to support a particular hardware instance.

30. The system of claim 29, wherein said factors are associated with a first product identifier identifying the hardware instance, and plurality of second product identifiers, each identifying, for an associated one of said plurality of drivers, the hardware instances supported by said associated driver.

31. The system of claim 29, wherein a first factor is a similarity between said first and second product identifier.

32. The system of claim 29, wherein said selecting means comprises:

means for comparing portions of said first and second product identifiers, wherein said factors include second factors, each representing a similarity between said compared portions of said first and second product identifiers,

wherein said second factors are weighted values according to a similarity between said corresponding portions of said first and second product identifier.

33. The system of claim 32, wherein said portions of said first and second product identifiers comprise:

a model ID identifying the model of the associated hardware instance;

a vendor ID identifying the vendor of the hardware instance;

a vendor device ID identifying the device number of the hardware instance assigned by the vendor; and

a product revision identifying a version of the hardware instance.

34. The system of claim 33, wherein said portions of said first and second product identifiers further comprise:

a subvendor ID identifies the vendor which manufactures the particular chip or hardware component in the hardware instance; and

a subvendor device ID identifies the vendor-assigned device number for the components of the hardware instance.

35. The system of claim 31,

wherein each of the hardware devices contains a bus tag and a device identifier for each hardware instance on the hardware device, and

wherein, for each hardware instance, said hardware instance value is a hardware instance number associated with the bus tag and device identifier for said each hardware instance.

36. A hardware identification and configuration system in a general purpose computer system including a first hardware device having first hardware configuration information and a second hardware device having second hardware configuration information, the system comprising:

an identification mechanism configured to obtain said first and second hardware configuration information; and

a configuration mechanism configured to resolve a conflict between said first and second hardware configuration information, wherein said conflict is a conflict between resource requirements of said first and second hardware configuration information and wherein, for each identified resource setting conflict, said configuration mechanism for resolving modifies the resource setting in the first hardware configuration information to a non-conflicting setting.

37. The system of claim 36, wherein said first and second hardware configuration information are obtained from the first and second hardware devices, respectively.

38. The system of claim 37, wherein said first and second hardware configuration information are obtained hardware device registers located in said first and second hardware devices, respectively.

39. The system of claim 36, wherein said first and second hardware configuration information are obtained from a table in a memory of the computer system.

40. The system of claim 36, further comprising:

a manual driver selection modification mechanism configured to allow a user to review and modify said first and second hardware configuration information.

41. A method for automatically identifying and configuring a plurality of hardware instances on a computer system, the method comprising the following steps:

a) uniquely identifying each of the plurality of hardware instances;

b) selecting an optimal driver with the highest relative capability from a plurality of drivers configured to support each of the plurality of hardware instances;

c) resolving a conflict between a resource requirement setting of a first hardware instance and a resource requirement setting of a second hardware instance, including the steps of,

1) determining that the conflict exists, and

2) attempting to modifying a resource requirement setting in the first hardware instance to a non-conflicting setting when a conflict is identified in step

     1); and

d) if the resourd requirement setting is a non-conflicting setting, loading said selected optimal driver into a run-time memory of the computer system, otherwise, avoid loading of the selected optimal driver.

42. The method of claim 41, wherein said step a) includes the steps of:

1) identifying the plurality of drivers stored on the computer system;

2) scanning busses for the plurality of hardware instances;

3) identifying each of the plurality of hardware instances; and

4) scanning each of the plurality of hardware instances for hardware instance information.

43. The method of claim 42, further comprising the step of:

5) storing the hardware instance information in a table in said run-time memory of the computer system.

44. The method of claim 42, wherein each of a plurality of driver descriptors, each associated with one or said plurality of drivers, includes a product identifier specifying specific hardware instances that each of said plurality of drivers can support and wherein said step 1) comprises the step of:

(a) scanning each of said plurality of driver descriptors associated with each of said plurality of drivers for said product identifier.

45. The method of claim 44, wherein said step 5) comprises the step of:

(a) scanning registers of each hardware instance for hardware instance information, said hardware instance information including a product identifier and resource settings.

46. The method of claim 45, wherein the product identifier of each hardware instance and the product identifier of each driver descriptor includes a plurality of factors.

47. The method of claim 42, wherein said step 3) comprises the steps of:

(a) uniquely identifying each hardware instance by a hardware instance number equal to a physical slot number on the computer system, when said physical slot number is unique; and

(b) uniquely identifying each hardware instance by a hardware instance number equal to a sequence number when said physical slot number is not unique.

48. The method of claim 47, wherein said step b) comprises the steps of:

1) comparing each factor for the product identifier of each hardware instance to the associated factor for the product identifier of each driver descriptor;

2) determining a weighted score for each factor based on the comparing step;

3) combining the weighted scores of each factor to produce a total weighted value for each of said driver descriptors; and

4) selecting said optimal driver from said plurality of drivers based on said total weighted value.

49. A computer readable medium encoded with a program that, when executed on a computer system, performs a method for automatically identifying and configuring a plurality of hardware instances on the computer system, the method comprising steps of:

a) uniquely identifying each of the plurality of hardware instances;

b) selecting an optimal driver with the highest relative capability from a plurality of drivers configured to support each of the plurality of hardware instances;

c) resolving a conflict between a resource requirement setting of a first hardware instance and a resource requirement setting of a second hardware instance, including the steps of,

1) determining that the conflict exists, and

2) attempting to modifying a resource requirement setting in the first hardware instance to a non-conflicting setting when a conflict is identified in step

     1); and

d) if the resource requirement setting is a non-conflicting setting, loading said selected optimal driver into a run-time memory of the computer system, otherwise, avoid loading of the selected optimal driver.

50. The computer readable medium of claim 49, wherein said step a) includes the steps of:

1) identifying the plurality of drivers stored on the computer system;

2) scanning busses for the plurality of hardware instances;

3) identifying each of the plurality of hardware instances; and

4) scanning each of the plurality of hardware instances for hardware instance information.

51. The computer readable medium of claim 50, wherein the method further comprises a step of:

5) storing the hardware instance information in a table in said run-time memory of the computer system.

52. The computer readable medium of claim 50, wherein each of a plurality of driver descriptors, each associated with one or said plurality of drivers, includes a product identifier specifying specific hardware instances that each of said plurality of drivers can support and wherein said step 1) comprises the step of:

(a) scanning each of said plurality of driver descriptors associated with each of said plurality of drivers for said product identifier.

53. The computer readable medium of claim 52, wherein said step 5) comprises the step of:

(a) scanning registers of each hardware instance for hardware instance information, said hardware instance information including a product identifier and resource settings.

54. The computer readable medium of claim 53, wherein the product identifier of each hardware instance and the product identifier of each driver descriptor includes a plurality of factors.

55. The computer readable medium of claim 50, wherein said step 3) comprises the steps of:

(a) uniquely identifying each hardware instance by a hardware instance number equal to a physical slot number on the computer system, when said physical slot number is unique; and

(b) uniquely identifying each hardware instance by a hardware instance number equal to a sequence number when said physical slot number is not unique.

56. The computer readable medium of claim 55, wherein said step b) comprises the steps of:

1) comparing each factor for the product identifier of each hardware instance to the associated factor for the product identifier of each driver descriptor;

2) determining a weighted score for each factor based on the comparing step;

3) combining the weighted scores of each factor to produce a total weighted value for each of said driver descriptors; and

4) selecting said optimal driver from said plurality of drivers based on said total weighted value.

57. A computer program product comprising a computer readable medium having a computer program logic thereon for enabling a processor in a computer system to automatically identify and configure hardware in a general purpose computer system, the computer system including a first hardware device having first hardware configuration information and a second hardware device having second hardware configuration information, the computer program product comprising:

an identification mechanism configured to obtain said first and second hardware configuration information; and

a configuration mechanism configured to resolve a conflict between said first and second hardware configuration information, wherein said conflict is a conflict between resource requirements of said first and second hardware configuration information and wherein, for each identified resource setting conflict, said configuration mechanism for resolving modifies the resource setting in the first hardware configuration information to a non-conflicting setting.

58. The computer program product of claim 57, wherein said first and second hardware configuration information are obtained from the first and second hardware devices, respectively.

59. The computer program product of claim 58, wherein said first and second hardware configuration information are obtained hardware device registers located in said first and second hardware devices, respectively.

60. The computer program product of claim 57, wherein said first and second hardware configuration information are obtained from a table in a memory of the computer system.

61. The computer program product of claim 57, further comprising:

a manual driver selection modification mechanism configured to allow a user to review and modify said first and second hardware configuration information.