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>

By referring to our spec-sw subdirectory, we ensure versions are matched.
Also, we'll later need to include "spec.h", for carrier-specific DMA
code: we'd better not refer to ../spec-sw by default.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Michel Arruat <michel.arruat@cern.ch>

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>

to not become crasy while grepping xx_exit or xx_init function (sorry...)

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 meant to fire the FMCADC_EDISABLED error when reconfiguring
and ongoing acquisition for which somebody is already waiting.

Every function that is sable to wait for a timeout now may return -1
with FMCADC_EDISABLED. The new zio commits support that by returning
POLLERR when using poll(2) over a control file descriptor and the
trigger is disabled.  A non-zio driver may support something similar.

Thus, an application may disable the trigger to unlock with error
any thread waiting for an input block.
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 adds a flushing option when the device is opened and when a new
acquisition is requested..  The code uses poll(2) and allows for
POLLERR to be returned, so it is prepared for the new zio semantics of
poll(2) for control files.
Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

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

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

Release invalid blocks on DMA error
Signed-off-by: Federico Vaga <federico.vaga@gmail.com>

It is fair and necessary for peaceful coexistence of the driver
with other peers like FD and TDC.

This avoids page-split dma_items in a very dirty way

Debugging DMA error required to spot what next dma_item
adresses were being communicated to the DMA core; the
trace message has been deferred accordingly

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 set of commits completely reviews and simplifies the API, fixing
the sequence of allocation/fill/deallocation for buffers.

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

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