forked from luck/tmp_suning_uos_patched
51ba902a16
Initialize hw interface as part of the nic initialization for accessing hw. Signed-off-by: Aviad Krawczyk <aviad.krawczyk@huawei.com> Signed-off-by: Zhao Chen <zhaochen6@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
126 lines
4.1 KiB
Plaintext
126 lines
4.1 KiB
Plaintext
Linux Kernel Driver for Huawei Intelligent NIC(HiNIC) family
|
|
============================================================
|
|
|
|
Overview:
|
|
=========
|
|
HiNIC is a network interface card for the Data Center Area.
|
|
|
|
The driver supports a range of link-speed devices (10GbE, 25GbE, 40GbE, etc.).
|
|
The driver supports also a negotiated and extendable feature set.
|
|
|
|
Some HiNIC devices support SR-IOV. This driver is used for Physical Function
|
|
(PF).
|
|
|
|
HiNIC devices support MSI-X interrupt vector for each Tx/Rx queue and
|
|
adaptive interrupt moderation.
|
|
|
|
HiNIC devices support also various offload features such as checksum offload,
|
|
TCP Transmit Segmentation Offload(TSO), Receive-Side Scaling(RSS) and
|
|
LRO(Large Receive Offload).
|
|
|
|
|
|
Supported PCI vendor ID/device IDs:
|
|
===================================
|
|
|
|
19e5:1822 - HiNIC PF
|
|
|
|
|
|
Driver Architecture and Source Code:
|
|
====================================
|
|
|
|
hinic_dev - Implement a Logical Network device that is independent from
|
|
specific HW details about HW data structure formats.
|
|
|
|
hinic_hwdev - Implement the HW details of the device and include the components
|
|
for accessing the PCI NIC.
|
|
|
|
hinic_hwdev contains the following components:
|
|
===============================================
|
|
|
|
HW Interface:
|
|
=============
|
|
|
|
The interface for accessing the pci device (DMA memory and PCI BARs).
|
|
(hinic_hw_if.c, hinic_hw_if.h)
|
|
|
|
Configuration Status Registers Area that describes the HW Registers on the
|
|
configuration and status BAR0. (hinic_hw_csr.h)
|
|
|
|
MGMT components:
|
|
================
|
|
|
|
Asynchronous Event Queues(AEQs) - The event queues for receiving messages from
|
|
the MGMT modules on the cards. (hinic_hw_eqs.c, hinic_hw_eqs.h)
|
|
|
|
Application Programmable Interface commands(API CMD) - Interface for sending
|
|
MGMT commands to the card. (hinic_hw_api_cmd.c, hinic_hw_api_cmd.h)
|
|
|
|
Management (MGMT) - the PF to MGMT channel that uses API CMD for sending MGMT
|
|
commands to the card and receives notifications from the MGMT modules on the
|
|
card by AEQs. Also set the addresses of the IO CMDQs in HW.
|
|
(hinic_hw_mgmt.c, hinic_hw_mgmt.h)
|
|
|
|
IO components:
|
|
==============
|
|
|
|
Completion Event Queues(CEQs) - The completion Event Queues that describe IO
|
|
tasks that are finished. (hinic_hw_eqs.c, hinic_hw_eqs.h)
|
|
|
|
Work Queues(WQ) - Contain the memory and operations for use by CMD queues and
|
|
the Queue Pairs. The WQ is a Memory Block in a Page. The Block contains
|
|
pointers to Memory Areas that are the Memory for the Work Queue Elements(WQEs).
|
|
(hinic_hw_wq.c, hinic_hw_wq.h)
|
|
|
|
Command Queues(CMDQ) - The queues for sending commands for IO management and is
|
|
used to set the QPs addresses in HW. The commands completion events are
|
|
accumulated on the CEQ that is configured to receive the CMDQ completion events.
|
|
(hinic_hw_cmdq.c, hinic_hw_cmdq.h)
|
|
|
|
Queue Pairs(QPs) - The HW Receive and Send queues for Receiving and Transmitting
|
|
Data. (hinic_hw_qp.c, hinic_hw_qp.h, hinic_hw_qp_ctxt.h)
|
|
|
|
IO - de/constructs all the IO components. (hinic_hw_io.c, hinic_hw_io.h)
|
|
|
|
HW device:
|
|
==========
|
|
|
|
HW device - de/constructs the HW Interface, the MGMT components on the
|
|
initialization of the driver and the IO components on the case of Interface
|
|
UP/DOWN Events. (hinic_hw_dev.c, hinic_hw_dev.h)
|
|
|
|
|
|
hinic_dev contains the following components:
|
|
===============================================
|
|
|
|
PCI ID table - Contains the supported PCI Vendor/Device IDs.
|
|
(hinic_pci_tbl.h)
|
|
|
|
Port Commands - Send commands to the HW device for port management
|
|
(MAC, Vlan, MTU, ...). (hinic_port.c, hinic_port.h)
|
|
|
|
Tx Queues - Logical Tx Queues that use the HW Send Queues for transmit.
|
|
The Logical Tx queue is not dependent on the format of the HW Send Queue.
|
|
(hinic_tx.c, hinic_tx.h)
|
|
|
|
Rx Queues - Logical Rx Queues that use the HW Receive Queues for receive.
|
|
The Logical Rx queue is not dependent on the format of the HW Receive Queue.
|
|
(hinic_rx.c, hinic_rx.h)
|
|
|
|
hinic_dev - de/constructs the Logical Tx and Rx Queues.
|
|
(hinic_main.c, hinic_dev.h)
|
|
|
|
|
|
Miscellaneous:
|
|
=============
|
|
|
|
Common functions that are used by HW and Logical Device.
|
|
(hinic_common.c, hinic_common.h)
|
|
|
|
|
|
Support
|
|
=======
|
|
|
|
If an issue is identified with the released source code on the supported kernel
|
|
with a supported adapter, email the specific information related to the issue to
|
|
aviad.krawczyk@huawei.com.
|