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authorStefan Chulski <stefanc@marvell.com>2021-02-11 12:48:59 +0200
committerDavid S. Miller <davem@davemloft.net>2021-02-11 14:50:24 -0800
commiteb30b269549a0cd27c3b9a67676f6a39c77fcfa0 (patch)
treeca39e4be855771a13b54464b0a334adac5076a84 /usr
parent76055831cf84b8fc202f7e5c6b6639817832eef3 (diff)
downloadlinux-eb30b269549a0cd27c3b9a67676f6a39c77fcfa0.tar.bz2
net: mvpp2: add BM protection underrun feature support
The PP2v23 hardware supports a feature allowing to double the size of BPPI by decreasing number of pools from 16 to 8. Increasing of BPPI size protect BM drop from BPPI underrun. Underrun could occurred due to stress on DDR and as result slow buffer transition from BPPE to BPPI. New BPPI threshold recommended by spec is: BPPI low threshold - 640 buffers BPPI high threshold - 832 buffers Supported only in PPv23. Signed-off-by: Stefan Chulski <stefanc@marvell.com> Acked-by: Marcin Wojtas <mw@semihalf.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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