[PATCH RFCv4 0/2] CARMA Board Support

Ira W. Snyder iws at ovro.caltech.edu
Tue Feb 8 10:23:39 EST 2011

Hello everyone,

This is the fourth posting of these drivers, taking into account comments
from earlier postings. The DMAEngine patches are in mainline now, and
therefore are not part of this series anymore.

RFCv3 -> RFCv4:
- updates for DATA-FPGA version 2

RFCv2 -> RFCv3:
- use miscdevice framework (removing the carma class)
- add bitfile readback capability to the programmer

RFCv1 -> RFCv2:
- change comments to kerneldoc format
- Kconfig improvements
- use the videobuf_dma_sg API in the programmer
- updates for Freescale DMAEngine DMA_SLAVE API changes

Information about the CARMA board:

The CARMA board is essentially an MPC8349EA MDS reference design with a
1GHz ADC and 4 high powered data processing FPGAs connected to the local
bus. It is all packed into a compact PCI form factor. It is used at the
Owens Valley Radio Observatory as the main component in the correlator

For board information, see:

For DATA-FPGA register layout, see:

These drivers are the necessary pieces to get the data processing FPGAs
working and producing data. Despite the fact that the hardware is custom
and we are the only users, I'd still like to get the drivers upstream.
Several people have suggested that this is possible.

Some further patches will be forthcoming. I have a driver for the LED
subsystem and the PPS subsystem. The LED register layout is expected to
change soon, so I won't post the driver until that is finished. The PPS
driver will be posted seperately from this patch series; it is very

Thanks to everyone who has provided comments on earlier versions!

Ira W. Snyder (2):
  misc: add CARMA DATA-FPGA Access Driver
  misc: add CARMA DATA-FPGA Programmer support

 drivers/misc/Kconfig                    |    1 +
 drivers/misc/Makefile                   |    1 +
 drivers/misc/carma/Kconfig              |   18 +
 drivers/misc/carma/Makefile             |    2 +
 drivers/misc/carma/carma-fpga-program.c | 1084 +++++++++++++++++++++++
 drivers/misc/carma/carma-fpga.c         | 1446 +++++++++++++++++++++++++++++++
 6 files changed, 2552 insertions(+), 0 deletions(-)
 create mode 100644 drivers/misc/carma/Kconfig
 create mode 100644 drivers/misc/carma/Makefile
 create mode 100644 drivers/misc/carma/carma-fpga-program.c
 create mode 100644 drivers/misc/carma/carma-fpga.c


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