CVS commit: [netbsd-9] src/sys

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Tue Aug 11 17:14:21 UTC 2020

Modified Files:
        src/sys/dev/ic [netbsd-9]: dwc_gmac.c dwc_gmac_reg.h
        src/sys/kern [netbsd-9]: uipc_mbuf.c

Log Message:
Pull up following revision(s) (requested by mrg in ticket #1045):

        sys/kern/uipc_mbuf.c: revision 1.235
        sys/dev/ic/dwc_gmac.c: revision 1.70
        sys/dev/ic/dwc_gmac_reg.h: revision 1.20
        sys/dev/ic/dwc_gmac.c: revision 1.66
        sys/dev/ic/dwc_gmac.c: revision 1.67
        sys/dev/ic/dwc_gmac.c: revision 1.68

awge: fix issue that caused rx packets to be corrupt with DIAGNOSTIC kernel

It seems the hardware can only reliably do rx DMA to addresses that are
dcache size aligned. This is hinted at by some GMAC data sheets but hard to
find an authoritative source.

on non-DIAGNOSTIC kernels we always implicitly get MCLBYTES-aligned mbuf
data pointers, but with the reintroduction of POOL_REDZONE for DIAGNOSTIC
we can get 8-byte alignment due to redzone padding. So align rx pointers to
64 bytes which should be good for both arm32 and aarch64.
While here change some bus_dmamap_load() to bus_dmamap_load_mbuf() and add
one missing bus_dmamap_sync(). Also fixes the code to not assume that
MCLBYTES == AWGE_MAX_PACKET. User may override MCLSHIFT in kernel config.
correct pointer arithmetics

mcl_cache: align items to COHERENCY_UNIT

Because we do cache incoherent DMA to/from mbufs we cannot safely share
share cache lines with adjacent items that may be concurrently accessed.

awge: drop redundant m_adj(). Handled via uipc_mbuf.c r1.235 instead.

Mask all the MMC counter interrupts if the MMC module is present.


To generate a diff of this commit:
cvs rdiff -u -r1.64 -r1.64.2.1 src/sys/dev/ic/dwc_gmac.c
cvs rdiff -u -r1.19 -r1.19.4.1 src/sys/dev/ic/dwc_gmac_reg.h
cvs rdiff -u -r1.232 -r1.232.4.1 src/sys/kern/uipc_mbuf.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.