Hi Marc, > Betreff: [PATCH v2 0/5] can: enable multi-queue for SocketCAN devices You have been interested in seeing the reason why we are proposing the "can: enable multi-queue for SocketCAN devices" patch for the Linux mainline. So far I have not heard from you. Do you now see a chance of getting the patch accepted? > > Changes in v2: > - use GPIO descriptor API > - make error handling pattern consistent > - use more kernel helper macros and functions > - fix coding style issues > - remove superfluous subsystem name from filename > > --- > > Upon request by Marc Kleine-Budde this patch series does not only > contain our patch to enable enable multi-queue for SocketCAN devices > but also a driver (Companion driver suite) which makes active use of > this feature. > > The driver suite implements > - two CAN interfaces > - one generic command interfaces > and offers a SocketCAN as well as a char device interface. The > SocketCAN interface supports multi-queue. > > The functionality bases on an external peripheral chip named Companion. > It offers two CAN interfaces, each has 8 prioritized transmit FIFOs as > well as one receive FIFO. Besides CAN, undisclosed additional functions > can be accessed through the char device. > > A standard SPI interface with two additional lines for flow control is > used. The Companion chip is the SPI slave. > > The driver suite consists of three separate drivers. The following > diagram illustrates the dependencies in layers. > > /dev/companion SocketCAN User Space > ------------------------------------------------------------------- > +----------------+ +---------------+ > | companion-char | | companion-can | > +----------------+ +---------------+ > +----------------------------------+ > | companion-spi | > +----------------------------------+ > +----------------------------------+ > | standard SPI subsystem | > +----------------------------------+ Linux Kernel > ------------------------------------------------------------------- > | | | | | | Hardware > CS-+ | | | | +-BUSY > CLK--+ | | +---REQUEST > MOSI---+ | > MISO-----+ > > companion-spi > core.c: handles SPI, sysfs entry and interface to upper layer > protocol-manager.c: handles protocol with the SPI HW > queue-manager.c: handles buffering and packets scheduling > > companion-can > makes use of multi-queue support and allows to use tc to configure > the queuing discipline (e.g. mqprio). Together with the SO_PRIORITY > socket option this allows to specify the FIFO a CAN frame shall be > sent to. > > companion-char > handles messages to other undisclosed functionality beyond CAN. > > Zhu Yi (5): > can: enable multi-queue for SocketCAN devices > spi: implement companion-spi driver > char: implement companion-char driver > can: implement companion-can driver > spi,can,char: add companion DT binding documentation > > .../devicetree/bindings/spi/bosch,companion.txt | 82 ++ > drivers/char/Kconfig | 7 + > drivers/char/Makefile | 3 + > drivers/char/companion.c | 360 ++++++ > drivers/net/can/Kconfig | 8 + > drivers/net/can/Makefile | 2 + > drivers/net/can/companion.c | 693 ++++++++++++ > drivers/net/can/dev.c | 8 +- > drivers/spi/Kconfig | 2 + > drivers/spi/Makefile | 2 + > drivers/spi/companion/Kconfig | 5 + > drivers/spi/companion/Makefile | 2 + > drivers/spi/companion/core.c | 1185 ++++++++++++++++++++ > drivers/spi/companion/protocol-manager.c | 1032 +++++++++++++++++ > drivers/spi/companion/protocol-manager.h | 341 ++++++ > drivers/spi/companion/protocol.h | 273 +++++ > drivers/spi/companion/queue-manager.c | 144 +++ > drivers/spi/companion/queue-manager.h | 245 ++++ > include/linux/can/dev.h | 7 +- > include/linux/companion.h | 259 +++++ > 20 files changed, 4656 insertions(+), 4 deletions(-) > create mode 100644 Documentation/devicetree/bindings/spi/bosch,companion.txt > create mode 100644 drivers/char/companion.c > create mode 100644 drivers/net/can/companion.c > create mode 100644 drivers/spi/companion/Kconfig > create mode 100644 drivers/spi/companion/Makefile > create mode 100644 drivers/spi/companion/core.c > create mode 100644 drivers/spi/companion/protocol-manager.c > create mode 100644 drivers/spi/companion/protocol-manager.h > create mode 100644 drivers/spi/companion/protocol.h > create mode 100644 drivers/spi/companion/queue-manager.c > create mode 100644 drivers/spi/companion/queue-manager.h > create mode 100644 include/linux/companion.h > > -- > 2.7.4 Greetings, Mark Building Technologies, Panel Software Fire (BT-FIR/ENG1) Bosch Sicherheitssysteme GmbH | Postfach 11 11 | 85626 Grasbrunn | GERMANY | www.boschsecurity.com Sitz: Stuttgart, Registergericht: Amtsgericht Stuttgart HRB 23118 Aufsichtsratsvorsitzender: Stefan Hartung; Geschäftsführung: Gert van Iperen, Andreas Bartz, Thomas Quante, Bernhard Schuster -- To unsubscribe from this list: send the line "unsubscribe linux-can" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
