摘要:
A method, including receiving, by an extended virtual function shell positioned on a Peripheral Component Interconnect Express (PCIe) configuration space, a virtual function call comprising a request to perform a specific computation, and identifying a physical function associated with the called virtual function, the physical function one of multiple physical functions positioned on the PCIe configuration space. One or more first data values are then retrieved from a virtual function instance stored in the memory, one or more first data values, the virtual function instance associated with the called virtual function, and one or more second data values are retrieved from the identified physical function. The specific computation is then performed using the first data values and the second data values, thereby calculating a result.
摘要:
A method, including receiving, by an extended virtual function shell positioned on a Peripheral Component Interconnect Express (PCIe) configuration space, a virtual function call comprising a request to perform a specific computation, and identifying a physical function associated with the called virtual function, the physical function one of multiple physical functions positioned on the PCIe configuration space. One or more first data values are then retrieved from a virtual function instance stored in the memory, one or more first data values, the virtual function instance associated with the called virtual function, and one or more second data values are retrieved from the identified physical function. The specific computation is then performed using the first data values and the second data values, thereby calculating a result.
摘要:
An apparatus, including a first multiple of virtual function clusters positioned on a Peripheral Component Interconnect Express (PCIe) configuration space, each of the clusters comprising at least one virtual function, and a second multiple of physical functions positioned on the PCIe configuration space. The apparatus also includes an extended virtual function shell positioned on the PCIe configuration space and configured to select one of the physical functions, to select one of the available virtual function clusters and to associate the selected virtual function cluster with the selected the physical function.
摘要:
An apparatus, including a first multiple of virtual function clusters positioned on a Peripheral Component Interconnect Express (PCIe) configuration space, each of the clusters comprising at least one virtual function, and a second multiple of physical functions positioned on the PCIe configuration space. The apparatus also includes an extended virtual function shell positioned on the PCIe configuration space and configured to select one of the physical functions, to select one of the available virtual function clusters and to associate the selected virtual function cluster with the selected the physical function.
摘要:
An apparatus and method of PCIe error handling and recovery actions taken in the event of an error. An error reporting extension defines a set of commonly used actions that are taken by a device in response to the detection of an error. This minimizes the side effects of continued device operation following the occurrence of an error. The device's error handling capabilities are advertised and the system software specifies the desired device action to take upon occurrence of a particular error. The particular error handling action is defined uniquely for each PCIe function and error type, such that different errors trigger a different type of action, thereby affecting only specific device functions or the entire device, depending on the configuration. Error handling actions and control fields are placed in the extension portion of the PCI Express Advanced Error Reporting configuration space.
摘要:
Device, system and method of modification of PCI Express packet digest. For example, an apparatus includes a credit-based flow control interconnect device to generate a credit-based flow control interconnect Transaction Layer Packet in which one or more bits of a digest portion carry non-ECRC data.
摘要:
The present invention implements a mechanism which enables zero-delay verification tools to detect clock domain crossing violations in device under test designs comprising two different clock domains where the fast clock rate is an integer multiple of the slow clock rate by inserting undefined (i.e., invalid) values on slow clock domain signals during the clock periods when the signals are not supposed to be captured. The undefined values are contained in the logic cone and emulate timing uncertainty of the path. Propagation of the undefined values through the capturing latch indicates improper clock domains crossing handling.
摘要:
Some embodiments include, for example, devices, systems, and methods of handling transactions. In some demonstrative embodiments, an apparatus to handle transactions in a computing system may include a master unit to arbitrate between read and write requests to be issued over a request bus according to at least first and second arbitration schemes. A first ratio between read and write requests issued by the master unit according to the first arbitration scheme may be different from a second ratio between read and write requests issued by the master unit according to the second arbitration scheme.
摘要:
A mechanism for speculative packet transmission including a credit-based flow control interconnect device to initiate speculative transmission of a Transaction Layer Packet if the number of available flow control (FC) credits is insufficient for completing the transmission. The sending device initiates a speculative transmission of packets to the receiving device even though the packet for transmission requires a number of FC credits greater than the available FC credits. If the additional FC credits required to complete the packet transmission become available to the sending device before the transmission is completed, the packets are then fully transmitted by the sending device. Otherwise, if the additional FC credits required do not become available prior to completion of the transmission, then the sending device aborts the transmission without utilization of the FC credits. The sending device may initiate speculative packet transmission only if a particular minimal amount of FC credits is available.
摘要:
Device, system, and method of utilizing PCI Express packets having modified headers. For example, an apparatus includes a credit-based flow control interconnect device to generate a credit-based flow control interconnect Transaction Layer Packet in which one or more bits of an ID field carry non-ID data.