Kernel-4.18.0-80.el8_hisilicon-hns-roce

Hisilicon RoCE DT description

Hisilicon RoCE engine is a part of network subsystem.
It works depending on other part of network wubsytem, such as, gmac and
dsa fabric.

Additional properties are described here:

Required properties:

• compatible: Should contain “hisilicon,hns-roce-v1”.

• reg: Physical base address of the RoCE driver and
  length of memory mapped region.

• eth-handle: phandle, specifies a reference to a node
  representing a ethernet device.

• dsaf-handle: phandle, specifies a reference to a node
  representing a dsaf device.

• node_guid: a number that uniquely identifies a device or component

• #address-cells: must be 2

• #size-cells: must be 2
  Optional properties:

• dma-coherent: Present if DMA operations are coherent.

• interrupt-parent: the interrupt parent of this device.

• interrupts: should contain 32 completion event irq,1 async event irq
  and 1 event overflow irq.

• interrupt-names:should be one of 34 irqs for roce device

  • hns-roce-comp-0 ~ hns-roce-comp-31: 32 complete event irq

  • hns-roce-async: 1 async event irq

  • hns-roce-common: named common exception warning irq
    Example:
    infiniband@c4000000 {

        compatible = "hisilicon,hns-roce-v1";
        reg = <0x0 0xc4000000 0x0 0x100000>;
        dma-coherent;
        eth-handle = <&eth2 &eth3 &eth4 &eth5 &eth6 &eth7>;
        dsaf-handle = <&soc0_dsa>;
        node-guid = [00 9A CD 00 00 01 02 03];
        #address-cells = <2>;
        #size-cells = <2>;
        interrupt-parent = <&mbigen_dsa>;
        interrupts = <722 1>,
                <723 1>,
                <724 1>,
                <725 1>,
                <726 1>,
                <727 1>,
                <728 1>,
                <729 1>,
                <730 1>,
                <731 1>,
                <732 1>,
                <733 1>,
                <734 1>,
                <735 1>,
                <736 1>,
                <737 1>,
                <738 1>,
                <739 1>,
                <740 1>,
                <741 1>,
                <742 1>,
                <743 1>,
                <744 1>,
                <745 1>,
                <746 1>,
                <747 1>,
                <748 1>,
                <749 1>,
                <750 1>,
                <751 1>,
                <752 1>,
                <753 1>,
                <785 1>,
                <754 4>;
    
        interrupt-names = "hns-roce-comp-0",
                "hns-roce-comp-1",
                "hns-roce-comp-2",
                "hns-roce-comp-3",
                "hns-roce-comp-4",
                "hns-roce-comp-5",
                "hns-roce-comp-6",
                "hns-roce-comp-7",
                "hns-roce-comp-8",
                "hns-roce-comp-9",
                "hns-roce-comp-10",
                "hns-roce-comp-11",
                "hns-roce-comp-12",
                "hns-roce-comp-13",
                "hns-roce-comp-14",
                "hns-roce-comp-15",
                "hns-roce-comp-16",
                "hns-roce-comp-17",
                "hns-roce-comp-18",
                "hns-roce-comp-19",
                "hns-roce-comp-20",
                "hns-roce-comp-21",
                "hns-roce-comp-22",
                "hns-roce-comp-23",
                "hns-roce-comp-24",
                "hns-roce-comp-25",
                "hns-roce-comp-26",
                "hns-roce-comp-27",
                "hns-roce-comp-28",
                "hns-roce-comp-29",
                "hns-roce-comp-30",
                "hns-roce-comp-31",
                "hns-roce-async",
                "hns-roce-common";
    };