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Default branch: MAIN
Current tag: jym-xensuspend-base
Revision 1.27 / (download) - annotate - [select for diffs], Sat Jun 28 17:42:53 2008 UTC (15 years, 9 months ago) by bouyer
Branch: MAIN
CVS Tags: yamt-pagecache-base3,
yamt-pagecache-base2,
yamt-pagecache-base,
yamt-nfs-mp-base9,
yamt-nfs-mp-base8,
yamt-nfs-mp-base7,
yamt-nfs-mp-base6,
yamt-nfs-mp-base5,
yamt-nfs-mp-base4,
yamt-nfs-mp-base3,
yamt-nfs-mp-base11,
yamt-nfs-mp-base10,
wrstuden-revivesa-base-4,
wrstuden-revivesa-base-3,
wrstuden-revivesa-base-2,
uebayasi-xip-base4,
uebayasi-xip-base3,
uebayasi-xip-base2,
uebayasi-xip-base1,
uebayasi-xip-base,
uebayasi-xip,
simonb-wapbl-nbase,
simonb-wapbl-base,
rmind-uvmplock-nbase,
rmind-uvmplock-base,
rmind-uvmplock,
nick-hppapmap-base4,
nick-hppapmap-base3,
nick-hppapmap-base2,
nick-hppapmap-base,
nick-hppapmap,
netbsd-6-base,
netbsd-6-1-RELEASE,
netbsd-6-1-RC4,
netbsd-6-1-RC3,
netbsd-6-1-RC2,
netbsd-6-1-RC1,
netbsd-6-1-5-RELEASE,
netbsd-6-1-4-RELEASE,
netbsd-6-1-3-RELEASE,
netbsd-6-1-2-RELEASE,
netbsd-6-1-1-RELEASE,
netbsd-6-1,
netbsd-6-0-RELEASE,
netbsd-6-0-RC2,
netbsd-6-0-RC1,
netbsd-6-0-6-RELEASE,
netbsd-6-0-5-RELEASE,
netbsd-6-0-4-RELEASE,
netbsd-6-0-3-RELEASE,
netbsd-6-0-2-RELEASE,
netbsd-6-0-1-RELEASE,
netbsd-6-0,
netbsd-6,
netbsd-5-base,
netbsd-5-2-RELEASE,
netbsd-5-2-RC1,
netbsd-5-2-3-RELEASE,
netbsd-5-2-2-RELEASE,
netbsd-5-2-1-RELEASE,
netbsd-5-2,
netbsd-5-1-RELEASE,
netbsd-5-1-RC4,
netbsd-5-1-RC3,
netbsd-5-1-RC2,
netbsd-5-1-RC1,
netbsd-5-1-5-RELEASE,
netbsd-5-1-4-RELEASE,
netbsd-5-1-3-RELEASE,
netbsd-5-1-2-RELEASE,
netbsd-5-1-1-RELEASE,
netbsd-5-1,
netbsd-5-0-RELEASE,
netbsd-5-0-RC4,
netbsd-5-0-RC3,
netbsd-5-0-RC2,
netbsd-5-0-RC1,
netbsd-5-0-2-RELEASE,
netbsd-5-0-1-RELEASE,
netbsd-5-0,
netbsd-5,
mrg-ohci-jmcneill-usbmp-base,
mrg-ohci-jmcneill-usbmp,
mjf-devfs2-base,
matt-premerge-20091211,
matt-nb6-plus-nbase,
matt-nb6-plus-base,
matt-nb6-plus,
matt-nb5-pq3-base,
matt-nb5-pq3,
matt-nb5-mips64-u2-k2-k4-k7-k8-k9,
matt-nb5-mips64-u1-k1-k5,
matt-nb5-mips64-premerge-20101231,
matt-nb5-mips64-premerge-20091211,
matt-nb5-mips64-k15,
matt-nb4-mips64-k7-u2a-k9b,
matt-mips64-premerge-20101231,
matt-mips64-base2,
jymxensuspend-base,
jym-xensuspend-nbase,
jym-xensuspend-base,
jym-xensuspend,
jruoho-x86intr-base,
jruoho-x86intr,
jmcneill-usbmp-pre-base2,
jmcneill-usbmp-base2,
jmcneill-usbmp-base,
jmcneill-audiomp3-base,
jmcneill-audiomp3,
haad-nbase2,
haad-dm-base2,
haad-dm-base1,
haad-dm-base,
haad-dm,
cherry-xenmp-base,
cherry-xenmp,
bouyer-quota2-nbase,
bouyer-quota2-base,
bouyer-quota2,
ad-audiomp2-base,
ad-audiomp2
Branch point for: yamt-pagecache,
matt-nb5-mips64,
jmcneill-usbmp
Changes since 1.26: +2 -1
lines
Diff to previous 1.26 (colored)
Add appropriate bus_dmamap_sync() calls to uhci(4), ohci(4) and ehci(4), as proposed on tech-kern@. While all DMA memory used in the USB framework is mapped BUS_DMAMAP_COHERENT (including data memory, which is memcpy'd from/to USB-private buffers), the CPU can reorder loads or stores from/to main memory, causing the controller to have an incoherent view of the DMA descriptors lists for a short time. bus_dmamap_sync() should contain memory barriers that prevents the CPU from reordering load/store. Note that BUS_DMAMAP_COHERENT is still required for the DMA descriptor lists - these can't work properly with software cache coherency. This fixes "host controller process error/host controller halted" errors I'm occasionally seeing with a umodem device on uhci on x86. Thanks to Michael Lorenz for testing it on his O2, and Izumi Tsutsui on his Cobalt Qube 2700.