Hi, [Appologies: this is a resend for some people. Due to a configuration error the original email was rejected by the mailing lists. I hope this one makes it!] We're looking to get some initial feedback on a new driver for a line of PCIe switches produced and produced and sold by Microsemi. The goal is to get the process moving to get this code included in upstream hopefully for 4.11. Facebook is currently gearing up to use this hardware in its Open Compute Platform and is pushing to have this driver in the upstream kernel. The following patch briefly describes the hardware and provides the first draft of driver code. Currently, the driver works and has been tested but is not feature complete. Thus, we are not looking to get it merged immediately. However we would like some early review, specifically on the interfaces and core concepts so that we don't do a lot of work down a path the community would reject. Barring any objections to this RFC, we will flesh out all the features and provide a completed patch for inclusion in the coming weeks. Work on a userspace tool, that utilizes this driver, is also being done at [1]. The tool is currently also a bit of a skeleton and will be fleshed out assuming there are no serious objections to our userspace interface. In the end, the tool will be released with a GPL license. The patch is based off of the v4.9 release. Thanks for your review, Logan [1] https://github.com/sbates130272/switchtec-user Logan Gunthorpe (1): MicroSemi Switchtec management interface driver Documentation/switchtec.txt | 54 +++ MAINTAINERS | 9 + drivers/pci/Kconfig | 1 + drivers/pci/Makefile | 1 + drivers/pci/switch/Kconfig | 13 + drivers/pci/switch/Makefile | 1 + drivers/pci/switch/switchtec.c | 824 +++++++++++++++++++++++++++++++++++++++++ drivers/pci/switch/switchtec.h | 119 ++++++ 8 files changed, 1022 insertions(+) create mode 100644 Documentation/switchtec.txt create mode 100644 drivers/pci/switch/Kconfig create mode 100644 drivers/pci/switch/Makefile create mode 100644 drivers/pci/switch/switchtec.c create mode 100644 drivers/pci/switch/switchtec.h -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
