Loading patent…
AssigneeInternational Business Machines Corporation
InventorsVishal Aslot, Bruce Mealey, James Pafumi, James Partridge, Chris Schwendiman
Estimating the term…
A system and method for passing Direct Memory Access (DMA) configuration information from one device driver to another in order to initialize devices for DMA operations are provided. More specifically, a mechanism for passing information, identifying a DMA address space allocated to a child virtual device, from the child virtual device to the virtual I/O (VIO) bus is provided so that DMA operations may be initialized for the child virtual device via the VIO bus. With the system and method, the device driver of the child virtual device passes information regarding the DMAble address space of the child virtual device directly to the device driver of the VIO bus using one of a I/O control (IOCTL) interface and an operating system kernel service. This information is then used by the VIO bus device driver to setup the VIO bus for DMA operations from the child virtual device.
A method, in a data processing system for passing data between a first device driver and a second device driver, comprising:
A computer program product in a computer readable medium for passing data between a first device driver and a second device driver, comprising:
A system for passing data between a first device driver and a second device driver, comprising:
Dependencies are inferred from the claim text.