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- fmc-fakedev
- ===========
- This package includes a software-only device, called fmc-fakedev, which
- is able to register up to 4 mezzanines (by default it registers one).
- Unlike the SPEC driver, which creates an FMC device for each PCI cards
- it manages, this module creates a single instance of its set of
- mezzanines.
- It is meant as the simplest possible example of how a driver should be
- written, and it includes a fake EEPROM image (built using the tools
- described in *note FMC Identification::),, which by default is
- replicated for each fake mezzanine.
- You can also use this device to verify the match algorithms, by asking
- it to test your own EEPROM image. You can provide the image by means of
- the eeprom= module parameter: the new EEPROM image is loaded, as usual,
- by means of the firmware loader. This example shows the defaults and a
- custom EEPROM image:
- spusa.root# insmod fmc-fakedev.ko
- [ 99.971247] fake-fmc-carrier: mezzanine 0
- [ 99.975393] Manufacturer: fake-vendor
- [ 99.979624] Product name: fake-design-for-testing
- spusa.root# rmmod fmc-fakedev
- spusa.root# insmod fmc-fakedev.ko eeprom=fdelay-eeprom.bin
- [ 121.447464] fake-fmc-carrier: Mezzanine 0: eeprom "fdelay-eeprom.bin"
- [ 121.462725] fake-fmc-carrier: mezzanine 0
- [ 121.466858] Manufacturer: CERN
- [ 121.470477] Product name: FmcDelay1ns4cha
- spusa.root# rmmod fmc-fakedev
- After loading the device, you can use the write_ee method do modify its
- own internal fake EEPROM: whenever the image is overwritten starting at
- offset 0, the module will unregister and register again the FMC device.
- This is shown in fmc-write-eeprom.txt
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