swh:1:snp:c2847dfd741eae21606027cf29250d1ebcd63fb4
- v5.9-rc8
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- v5.11
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- v5.1
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- v5.0
- v4.9-rc8
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- v4.8
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- v4.14
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- v4.13
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- v4.1
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- v3.11
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- v3.10
- v3.1-rc9
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- v3.1-rc4
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- v3.1-rc10
- v3.1-rc1
- v3.1
- v3.0-rc7
- v3.0-rc6
- v3.0-rc5
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- v3.0-rc2
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- v3.0
- v2.6.39-rc7
- v2.6.39-rc6
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- v2.6.39
- v2.6.38-rc8
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- v2.6.38
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- v2.6.37
- v2.6.36-rc8
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- v2.6.33
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- v2.6.32
- v2.6.31-rc9
- v2.6.31-rc8
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- v2.6.31
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- v2.6.30
- v2.6.29-rc8
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- v2.6.29
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- v2.6.27
- v2.6.26-rc9
- v2.6.26-rc8
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- v2.6.26
- v2.6.25-rc9
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- v2.6.25
- v2.6.24-rc8
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- v2.6.24
- v2.6.23-rc9
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- v2.6.23
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- v2.6.16
- v2.6.15-rc7
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- v2.6.15-rc5
- v2.6.15-rc4
- v2.6.15-rc3
- v2.6.15-rc2
- v2.6.15-rc1
- v2.6.15
- v2.6.14-rc5
- v2.6.14-rc4
- v2.6.14-rc3
- v2.6.14-rc2
- v2.6.14-rc1
- v2.6.14
- v2.6.13-rc7
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- v2.6.13-rc5
- v2.6.13-rc4
- v2.6.13-rc3
- v2.6.13-rc2
- v2.6.13-rc1
- v2.6.13
- v2.6.12-rc6
- v2.6.12-rc5
- v2.6.12-rc4
- v2.6.12-rc3
- v2.6.12-rc2
- v2.6.12
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Permalinks
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Tip revision: 9c763584b7c8911106bb77af7e648bef09af9d80 authored by Linus Torvalds on 20 November 2016, 21:52:19 UTC
Linux 4.9-rc6
Linux 4.9-rc6
Tip revision: 9c76358
fmc-fakedev.txt
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