We have used it to configure the board. We have chosen to implement the PCI address access to obtain compatible source code to the port the driver on a PowerPC target. The driver control structure member mediaCount , is initialized to 0xff at startup, while the other media control members mediaDefault , mediaCurrent , and gprModeVal are initialized to zero. Once this operation performed, the driver is able to extract the information it needs to configure the board internal registers, like the interrupt line, the base address,… The board internal registers will not be detailled here. The chip still has to be programmed to operate in little endian mode as it is on the PCI bus. The 2 bytes of data are extracted and processed into a normal pair of bytes. It is used to translate a physical memory address into a PCI-accessible address.
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This board includes an Ethernet controller based on a DEC chip.
Digital Dec 10 100 Fast Ethernet PCI Network Cards 21143 PC 21140 AE PD
This will later be used by the decGetEthernetAdr function. Write the Driver Statistic-Printing Function 4. Therefore, we had to provide a way to manage the cache.
The driver uses this value to program register CSR6.
Error When Using DEC Based PCI Ethernet
On other versions of the 21×40 family, the driver reads media information from a DEC serial ROM and configures the media. Current applicable release is 1. On Intel PC target, we were faced with a problem of memory cache management. First version of this document.
The driver also and contains error recovery code that handles known device errata related to DMA activity.
If any of the assumptions stated below are not true for your particular hardware, you need to modify the driver before it can operate correctly on your hardware. Tapping Into an Interface 4. By reading or writing these registers, a driver can obtain information about the type of the board, the interrupt it uses, the mapping of the chip specific registers, ….
Then the driver connects an interrupt handler to the interrupt line driven by the Ethernet controller the only interrupt which will be treated is the receive 2114 and launches 2 threads: This controls how much 211140 the device can absorb under load.
All of the device-specific parameters are passed in the initStr. Write the Driver Receive Task 3. The parameters should be specified as hexadecimal strings optionally preceded by “0x” or a minus sign “-“.
The 2 bytes of data are extracted and processed into a normal pair of bytes. Each time an Ethernet frame is put in the transmit queue, an event is sent to the transmit thread, which empty the queue by sending each outcoming frame.
Early versions used National transcievers, but later versions are depopulated ZX boards.
Digital Dec 10 Fast Ethernet PCI Network Cards PC AE PD | eBay
The user only needs to provide a valid value ddec this parameter if he wants to affect the order how different technology abilities are negotiated. First draft of this document Planned releases: It means that we will have to re-write some mechanisms of this driver.
To reference these buffers to the DEC chip we use a buffer descriptors ring.
All the buffers allocated to store the incoming or outcoming frames, buffer descriptor and also the PCI address space of the DEC board are located in a memory space with cache disable. However, all other driver control structure members should be considered read-only and should not be modified. We use Netboot tool to load our development from a server to the target via an ethernet network. Check the Intel web site for latest information.
By reading or writing these registers, a driver can obtain information about the type of the board, the interrupt it uses, the mapping of the chip specific registers, … On Intel target, the chip specific registers can be accessed via 2 methods: Each valid incoming ethernet frame is sent to the protocol stack and the buffer descriptor is given back to the DEC board the host processor reset bit OWN, which means descriptor belongs to Network device configuration 4.
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This should be selected taking into account the actual operating speed of the PHY. Accton EN All three media dwc supported. Document Revision History 7.