• Sunil Goutham's avatar
    octeontx2-pf: Attach NIX and NPA block LFs · 05fcc9e0
    Sunil Goutham authored
    For a PF to function as a NIC, NPA (for Rx buffers, Tx descriptors etc)
    and NIX (for rcv, send and completion queues) are the minimum resources
    needed. So request admin function (AF) to attach one each of NIX and NPA
    block LFs (local functions).
    
    Only AF can configure a LF's contexts, so request AF to allocate memory
    for NPA aura/pool and NIX RQ/SQ/CQ HW contexts. Upon receiving response,
    save some of the HW constants like number of pointers per stack page,
    size of send queue buffer (SQBs, where SQEs are queued by HW) e.t.c which
    are later used to initialize queues.
    
    A HW context here is like a state machine maintained for a descriptor
    queue. eg size, head/tail pointers, irq etc etc. HW maintains this in
    memory.
    Signed-off-by: default avatarSunil Goutham <sgoutham@marvell.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    05fcc9e0
otx2_common.h 6.63 KB