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501ef3066c
Marvell Prestera 98DX326x integrates up to 24 ports of 1GbE with 8 ports of 10GbE uplinks or 2 ports of 40Gbps stacking for a largely wireless SMB deployment. The current implementation supports only boards designed for the Marvell Switchdev solution and requires special firmware. The core Prestera switching logic is implemented in prestera_main.c, there is an intermediate hw layer between core logic and firmware. It is implemented in prestera_hw.c, the purpose of it is to encapsulate hw related logic, in future there is a plan to support more devices with different HW related configurations. This patch contains only basic switch initialization and RX/TX support over SDMA mechanism. Currently supported devices have DMA access range <= 32bit and require ZONE_DMA to be enabled, for such cases SDMA driver checks if the skb allocated in proper range supported by the Prestera device. Also meanwhile there is no TX interrupt support in current firmware version so recycling work is scheduled on each xmit. Port's mac address is generated from the switch base mac which may be provided via device-tree (static one or as nvme cell), or randomly generated. This is required by the firmware. Co-developed-by: Andrii Savka <andrii.savka@plvision.eu> Signed-off-by: Andrii Savka <andrii.savka@plvision.eu> Co-developed-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu> Signed-off-by: Oleksandr Mazur <oleksandr.mazur@plvision.eu> Co-developed-by: Serhiy Boiko <serhiy.boiko@plvision.eu> Signed-off-by: Serhiy Boiko <serhiy.boiko@plvision.eu> Co-developed-by: Serhiy Pshyk <serhiy.pshyk@plvision.eu> Signed-off-by: Serhiy Pshyk <serhiy.pshyk@plvision.eu> Co-developed-by: Taras Chornyi <taras.chornyi@plvision.eu> Signed-off-by: Taras Chornyi <taras.chornyi@plvision.eu> Co-developed-by: Volodymyr Mytnyk <volodymyr.mytnyk@plvision.eu> Signed-off-by: Volodymyr Mytnyk <volodymyr.mytnyk@plvision.eu> Signed-off-by: Vadym Kochan <vadym.kochan@plvision.eu> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.