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* FMC: make eeprom attribute writableAlessandro Rubini2014-02-281-1/+14
| | | | | | | | | | | This allows easier modification to the eeprom than loading the fmc-write-eeprom module. The carrier driver will refuse writing if the FPGA is not running the golden gateware image, so writing in practice is only available at manufacture/development time. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* FMC: support carriers with no mezzanineAlessandro Rubini2014-02-151-6/+1
| | | | | | | | | | | | | | | | | At registration and unregistration time, I was checking fmc->flags for FMC_DEVICE_NO_MEZZANINE, to skip initialization and cleanup for empty slots. The check was wrong ("==" instead of "&") but registration failed anyways (as expected) because we had no EEPROM. This commit fixes one such checks and removes the other, so to actually accept slots with no mezzanines. That's because the carrier may offer some support anyways (the SPEC does), and working on the carrier with no mezzanine-specific driver is common during development. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* FMC: add core bus driverAlessandro Rubini2013-06-181-1/+273
| | | | | | | | | | | | | | | | | | | This module offers registration services for both carriers (i.e. devices) and mezzanines (i.e. drivers). The matching for devices and drivers is performed according to the IPMI standard for FRU devices (Field Replaceable Units). The code includes support for parsing an SDB tree if present in the FPGA, and dumping it for diagnostics. SDB is not mandatory. Files in this commit correspond to commit ab23167f in the master branch of the project hosted on ohwr.org. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch> Acked-by: Emilio G. Cota <cota@braap.org> Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* FMC: create drivers/fmc and toplevel Kconfig questionAlessandro Rubini2013-06-171-0/+24
This commit creates the drivers/fmc directory and puts the necessary hooks for kbuild and kconfig. The code is currently a placeholder that only registers an empty bus. Signed-off-by: Alessandro Rubini <rubini@gnudd.com> Acked-by: Juan David Gonzalez Cobas <dcobas@cern.ch> Acked-by: Emilio G. Cota <cota@braap.org> Acked-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>