Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This patch adds a script "check-fmc-bus" that returns the pathname of
the fmc-bus kernel driver, either under this directory or under
../fmc-bus .  The former applies when fmc-bus is a submodule of this
package, the latter applies when we both are submodules of another
package.

The final aim is helping the naive user, who just wants to build it
all in a single step -- both if building this package or another
package that depends on both fmc-bus and this one.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

These bits were intruced in Linux-3.3, so don't refer to them.
Rather, err out on all unimplemented bits.  This is a different
patch from what David suggested.
Reported-by: Juan David Gonzalez Cobas <dcobas@cern.ch>
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This is not increasing the version number, because I plan to merge
before splitting off the fmc project.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

The code was checking the first LM32 instruction, but it used wrong
endianness.

This fixes the check, but the fix uncovered a bug: the "wrc=1"
parameter was only loading the first card. This fixes the bug
as well but not overwriting the user-provided parameter.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

When handling the interrupt, mask the pending bits with the not-empty
mask, otherwise an unexpected trigger-ready status may overflow the
for loop and eventually oops to panic.

Meanwhile, use a symbolic name for the mask and be more aggressive in
disabling (disable all bits: ho harm done for unimplemented interrupt
sources)
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

This is not really a problem if we have edge-triggered interrupts as
input to the Gennum, but will lock the computer on unload when
experimenting with level-triggered interrupts.

We haven't been able to run Message Signalled Interrupt
reliably, for a quirck in the Gennum chip and the kernel
insisting to configure it according to the standard. So this
adds "use_msi" as a module parameter, disabled by default.
See documentation for details.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>