ALTERA CHAINING DMA DRIVER DOWNLOAD

RX Buffer credit allocation -performance for received requests. You can drive this 3. The following table describes these commands. Sets the read-only value of the Class Code register. A bit is provided for each function, where bit 0 corresponds to function 0, and so on.

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LMI write operations are not recommended for use during normal operation. Secondary Bus number Bit 4: Data credit limit for the non-posted requests. A requester first sends a memory read request. Debug features allow observation and control of the Hard IP for faster debugging of system-level problems. This can complicate the driver API and can involve complex memory mapping operations on operating systems where the kernel and the application software are in different virtual address spaces.

The Application Layer deasserts this signal to throttle the data stream.

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Message Request with Data MsgD. Equalization, Phase 0 Consequently, it changes depending on the settings specified. These settings are optimized for the parameters chosen in this reference design. If the device driver is responsible for allocating the data buffers this is not normally a problem as there are standard routines, such as memalignthat return memory aligned to a given address boundary.

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Linux Kernel Driver DataBase: CONFIG_ALTERA_PCIE_CHDMA: Altera PCI Express Chaining DMA driver

The chaining DMA design example uses chainibg architecture capable of transferring a large amount of fragmented memory without accessing the DMA registers for every memory block.

The function must implement a timeout value in the range dna s to 50 ms. This parameter specifies the distribution of flow control header, data, and completion credits in the RX buffer. Provides the low-order message data bits to be sent in the message data field of the MSI messages associated with the AER capability structure.

Scan the motherboard PCI bus. If a DMA transfer is initiated from main memory the stale data will be transferred instead of the data updated by the processor. The Endpoint stores parameters in the Type 0 Configuration Space. Number of tags supported. Root Error Command Register.

The following encodings are defined for Endpoints: The following table describes each descriptor field. Note chzining the bottom left IP core includes the CvP functionality. It can be used in production designs with caution. Based on the attributes set in the Parameter Editor, the software application creates the necessary descriptor tables in the system memory. The byte enables only qualify data that is being written.

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You can use the init signal as a trigger in the SignalTap II file to capture data.

LMI write operations are not recommended for use during normal operation with the exception of AER header logging. Note that the byte enables indicate the first byte of data is not valid and the last dword of data has a single valid byte.

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Turn this option off. Doing so, may leave an MSI request from one function in the pending state, blocking the MSI requests of other functions. Changed to use bit software driver.

If your design meets the following criteria: Read-only bits are not affected. Clarified that the software installation is included in the design.