This RFC patch-set introduces the ZIO framework for input/output, which will be used in the new series of drivers by the BE-CO-HT group at CERN. The use-case it is meant to cover is very fast I/O with hardware-provided timestamps. The first production driver we will support is a 100Ms/s 4-channel 14-bit ADC (developed on ohwr: see http://www.ohwr.org/projects/fmc-adc-100m14b4cha ). We need similar bandwidth on output. The synchronization engine of that FMC card and other ones is going to be White Rabbit (http://www.ohwr.org/projects/white-rabbit). Currently, the patch-set includes one example driver (zio-zero) that behaves like /dev/zero and /dev/urandom. Other drivers will come soon, both demo and real hardware. Slides for a tutorial on the design ideas are online here: http://www.ohwr.org/attachments/881/zio-111123.pdf A list of pending issues and development plans is online at: http://www.ohwr.org/projects/zio/wiki/Todo /alessandro Alessandro Rubini (5): Documentation: add docs for drivers/zio include/linux: add headers for drivers/zio drivers/zio: add triggers and buffers drivers/zio: add user-space tool zio-dump zio: insert in Kbuild so it is actually compiled Federico Vaga (2): drivers/zio: core files for the ZIO input/output framework drivers/zio: add the zio-zero device driver Documentation/zio/00-INDEX | 10 + Documentation/zio/buffer.txt | 114 +++ Documentation/zio/device.txt | 69 ++ Documentation/zio/modules.txt | 45 + Documentation/zio/trigger.txt | 128 +++ drivers/Kconfig | 2 + drivers/Makefile | 1 + drivers/zio/Kconfig | 12 + drivers/zio/Makefile | 10 + drivers/zio/README | 105 +++ drivers/zio/buffers/Makefile | 1 + drivers/zio/buffers/zio-buf-kmalloc.c | 273 +++++++ drivers/zio/drivers/Makefile | 1 + drivers/zio/drivers/zio-zero.c | 87 ++ drivers/zio/triggers/Makefile | 2 + drivers/zio/triggers/zio-trig-irq.c | 203 +++++ drivers/zio/triggers/zio-trig-timer.c | 193 +++++ drivers/zio/zio-cdev.c | 498 ++++++++++++ drivers/zio/zio-dump.c | 196 +++++ drivers/zio/zio-sys.c | 1423 +++++++++++++++++++++++++++++++++ include/linux/zio-buffer.h | 246 ++++++ include/linux/zio-sysfs.h | 122 +++ include/linux/zio-trigger.h | 99 +++ include/linux/zio.h | 244 ++++++ 24 files changed, 4084 insertions(+), 0 deletions(-) create mode 100644 Documentation/zio/00-INDEX create mode 100644 Documentation/zio/buffer.txt create mode 100644 Documentation/zio/device.txt create mode 100644 Documentation/zio/modules.txt create mode 100644 Documentation/zio/trigger.txt create mode 100644 drivers/zio/Kconfig create mode 100644 drivers/zio/Makefile create mode 100644 drivers/zio/README create mode 100644 drivers/zio/buffers/Makefile create mode 100644 drivers/zio/buffers/zio-buf-kmalloc.c create mode 100644 drivers/zio/drivers/Makefile create mode 100644 drivers/zio/drivers/zio-zero.c create mode 100644 drivers/zio/triggers/Makefile create mode 100644 drivers/zio/triggers/zio-trig-irq.c create mode 100644 drivers/zio/triggers/zio-trig-timer.c create mode 100644 drivers/zio/zio-cdev.c create mode 100644 drivers/zio/zio-dump.c create mode 100644 drivers/zio/zio-sys.c create mode 100644 include/linux/zio-buffer.h create mode 100644 include/linux/zio-sysfs.h create mode 100644 include/linux/zio-trigger.h create mode 100644 include/linux/zio.h -- 1.7.7.2 -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
