Techniques for use with device drivers in a common software environment
First Claim
1. A computer-implemented method for facilitating communication between device drivers comprising:
- providing a device driver module making at least one call using an application programming interface, the application programming interface facilitating communication between the device driver module and a target code module wherein the application programming interface provides support for performing the at least one call from a first execution mode associated with the device driver module and a second execution mode associated with the target code module, said application programming interface providing support for user space to user space communication, user space to kernel space communication, kernel space to kernel space communication, and kernel to user space communication;
determining, by code of the application programming interface, said first execution mode of the device driver module and said second execution mode of the target code module, wherein said first execution mode and said second execution mode are one of a user execution mode or a kernel execution mode; and
establishing, using code of the application programming interface, a communication path between said device driver module and said target code module in accordance with said first execution mode and said second execution mode.
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Abstract
Described are techniques for facilitating communication between device drivers. A device driver is provided that makes at least one call using an application programming interface. The application programming interface facilitates communication between the device driver module and a target code module. The application programming interface provides support for performing the at least one call from a first execution mode associated with the device driver module and a second execution mode associated with the target code module. The application programming interface provides support for user space to user space communication, user space to kernel space communication, kernel space to kernel space communication, and kernel to user space communication. The first execution mode of the device driver module and said second execution mode of the target code module are determined. A communication path between the modules is established in accordance with said first execution mode and said second execution mode.
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Citations
20 Claims
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1. A computer-implemented method for facilitating communication between device drivers comprising:
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providing a device driver module making at least one call using an application programming interface, the application programming interface facilitating communication between the device driver module and a target code module wherein the application programming interface provides support for performing the at least one call from a first execution mode associated with the device driver module and a second execution mode associated with the target code module, said application programming interface providing support for user space to user space communication, user space to kernel space communication, kernel space to kernel space communication, and kernel to user space communication; determining, by code of the application programming interface, said first execution mode of the device driver module and said second execution mode of the target code module, wherein said first execution mode and said second execution mode are one of a user execution mode or a kernel execution mode; and establishing, using code of the application programming interface, a communication path between said device driver module and said target code module in accordance with said first execution mode and said second execution mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A data storage system comprising a computer readable medium with executable code stored thereon for facilitating communication between device drivers, the computer readable medium comprising executable code for:
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providing a device driver module making at least one call using an application programming interface, the application programming interface facilitating communication between the device driver module and a target code module wherein the application programming interface provides support for performing the at least one call from a first execution mode associated with the device driver module and a second execution mode associated with the target code module, said application programming interface providing support for user space to user space communication, user space to kernel space communication, kernel space to kernel space communication, and kernel to user space communication; determining, by code of the application programming interface, said first execution mode of the device driver module and said second execution mode of the target code module, wherein said first execution mode and said second execution mode are one of a user execution mode or a kernel execution mode; and establishing, using code of the application programming interface, a communication path between said device driver module and said target code module in accordance with said first execution mode and said second execution mode. - View Dependent Claims (16, 17, 18)
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19. A computer readable medium comprising code stored thereon for facilitating communication between device drivers, the computer readable medium comprising code that:
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provides a device driver module making at least one call using an application programming interface, the application programming interface facilitating communication between the device driver module and a target code module wherein the application programming interface provides support for performing the at least one call from a first execution mode associated with the device driver module and a second execution mode associated with the target code module, said application programming interface providing support for user space to user space communication, user space to kernel space communication, kernel space to kernel space communication, and kernel to user space communication; determines, by code of the application programming interface, said first execution mode of the device driver module and said second execution mode of the target code module, wherein said first execution mode and said second execution mode are one of a user execution mode or a kernel execution mode; and establishes, using code of the application programming interface, a communication path between said device driver module and said target code module in accordance with said first execution mode and said second execution mode. - View Dependent Claims (20)
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Specification