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2017-08-28drivers/fmc: carrier can program FPGA on registrationFederico Vaga1-3/+15
The initial FPGA may require programming before it is useful. Signed-off-by: Federico Vaga <federico.vaga@cern.ch> Tested-by: Pat Riehecky <riehecky@fnal.gov> Acked-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28drivers/fmc: change registration prototypeFederico Vaga1-1/+14
Permit use of either fmc_device_register_n or fmc_device_register_n_gw depending on the type of device in use. Signed-off-by: Federico Vaga <federico.vaga@cern.ch> Tested-by: Pat Riehecky <riehecky@fnal.gov> Acked-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28drivers/fmc: The only way to dump the SDB is from debugfsFederico Vaga1-1/+6
Driver should not call fmc_sdb_dump() anymore. (actually they can but the operation is not supported, so it will print an error message) Signed-off-by: Federico Vaga <federico.vaga@cern.ch> Tested-by: Pat Riehecky <riehecky@fnal.gov> Acked-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-28drivers/fmc: hide fmc operations behind helpersFederico Vaga1-0/+55
This gave us more freedom to change/add/remove operations without recompiling all device driver. Typically, Carrier board implement the fmc operations, so they will not use these helpers. Signed-off-by: Federico Vaga <federico.vaga@cern.ch> Tested-by: Pat Riehecky <riehecky@fnal.gov> Acked-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-28FMC: make eeprom attribute writableAlessandro Rubini1-1/+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>
2014-02-15FMC: support carriers with no mezzanineAlessandro Rubini1-6/+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>
2013-06-18FMC: add core bus driverAlessandro Rubini1-1/+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>
2013-06-17FMC: create drivers/fmc and toplevel Kconfig questionAlessandro Rubini1-0/+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>

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