Based on kernel version 4.15. Page generated on 2018-01-29 10:00 EST.
1 Linux Kernel Driver for Huawei Intelligent NIC(HiNIC) family 2 ============================================================ 3 4 Overview: 5 ========= 6 HiNIC is a network interface card for the Data Center Area. 7 8 The driver supports a range of link-speed devices (10GbE, 25GbE, 40GbE, etc.). 9 The driver supports also a negotiated and extendable feature set. 10 11 Some HiNIC devices support SR-IOV. This driver is used for Physical Function 12 (PF). 13 14 HiNIC devices support MSI-X interrupt vector for each Tx/Rx queue and 15 adaptive interrupt moderation. 16 17 HiNIC devices support also various offload features such as checksum offload, 18 TCP Transmit Segmentation Offload(TSO), Receive-Side Scaling(RSS) and 19 LRO(Large Receive Offload). 20 21 22 Supported PCI vendor ID/device IDs: 23 =================================== 24 25 19e5:1822 - HiNIC PF 26 27 28 Driver Architecture and Source Code: 29 ==================================== 30 31 hinic_dev - Implement a Logical Network device that is independent from 32 specific HW details about HW data structure formats. 33 34 hinic_hwdev - Implement the HW details of the device and include the components 35 for accessing the PCI NIC. 36 37 hinic_hwdev contains the following components: 38 =============================================== 39 40 HW Interface: 41 ============= 42 43 The interface for accessing the pci device (DMA memory and PCI BARs). 44 (hinic_hw_if.c, hinic_hw_if.h) 45 46 Configuration Status Registers Area that describes the HW Registers on the 47 configuration and status BAR0. (hinic_hw_csr.h) 48 49 MGMT components: 50 ================ 51 52 Asynchronous Event Queues(AEQs) - The event queues for receiving messages from 53 the MGMT modules on the cards. (hinic_hw_eqs.c, hinic_hw_eqs.h) 54 55 Application Programmable Interface commands(API CMD) - Interface for sending 56 MGMT commands to the card. (hinic_hw_api_cmd.c, hinic_hw_api_cmd.h) 57 58 Management (MGMT) - the PF to MGMT channel that uses API CMD for sending MGMT 59 commands to the card and receives notifications from the MGMT modules on the 60 card by AEQs. Also set the addresses of the IO CMDQs in HW. 61 (hinic_hw_mgmt.c, hinic_hw_mgmt.h) 62 63 IO components: 64 ============== 65 66 Completion Event Queues(CEQs) - The completion Event Queues that describe IO 67 tasks that are finished. (hinic_hw_eqs.c, hinic_hw_eqs.h) 68 69 Work Queues(WQ) - Contain the memory and operations for use by CMD queues and 70 the Queue Pairs. The WQ is a Memory Block in a Page. The Block contains 71 pointers to Memory Areas that are the Memory for the Work Queue Elements(WQEs). 72 (hinic_hw_wq.c, hinic_hw_wq.h) 73 74 Command Queues(CMDQ) - The queues for sending commands for IO management and is 75 used to set the QPs addresses in HW. The commands completion events are 76 accumulated on the CEQ that is configured to receive the CMDQ completion events. 77 (hinic_hw_cmdq.c, hinic_hw_cmdq.h) 78 79 Queue Pairs(QPs) - The HW Receive and Send queues for Receiving and Transmitting 80 Data. (hinic_hw_qp.c, hinic_hw_qp.h, hinic_hw_qp_ctxt.h) 81 82 IO - de/constructs all the IO components. (hinic_hw_io.c, hinic_hw_io.h) 83 84 HW device: 85 ========== 86 87 HW device - de/constructs the HW Interface, the MGMT components on the 88 initialization of the driver and the IO components on the case of Interface 89 UP/DOWN Events. (hinic_hw_dev.c, hinic_hw_dev.h) 90 91 92 hinic_dev contains the following components: 93 =============================================== 94 95 PCI ID table - Contains the supported PCI Vendor/Device IDs. 96 (hinic_pci_tbl.h) 97 98 Port Commands - Send commands to the HW device for port management 99 (MAC, Vlan, MTU, ...). (hinic_port.c, hinic_port.h) 100 101 Tx Queues - Logical Tx Queues that use the HW Send Queues for transmit. 102 The Logical Tx queue is not dependent on the format of the HW Send Queue. 103 (hinic_tx.c, hinic_tx.h) 104 105 Rx Queues - Logical Rx Queues that use the HW Receive Queues for receive. 106 The Logical Rx queue is not dependent on the format of the HW Receive Queue. 107 (hinic_rx.c, hinic_rx.h) 108 109 hinic_dev - de/constructs the Logical Tx and Rx Queues. 110 (hinic_main.c, hinic_dev.h) 111 112 113 Miscellaneous: 114 ============= 115 116 Common functions that are used by HW and Logical Device. 117 (hinic_common.c, hinic_common.h) 118 119 120 Support 121 ======= 122 123 If an issue is identified with the released source code on the supported kernel 124 with a supported adapter, email the specific information related to the issue to 125 email@example.com.