On Wed, Mar 25, 2009 at 03:42:49AM +0000, Nathan Whitehorn wrote: > Author: nwhitehorn > Date: Wed Mar 25 03:42:49 2009 > New Revision: 190403 > URL: http://svn.freebsd.org/changeset/base/190403 > > Log: > Disable ATA DMA for ATAPI devices for now. Apparently, certain revisions > of this controller, in combination with certain ATAPI devices and phases > of the moon, will cause DMA operations for ATAPI to fail. > > Modified: > head/sys/powerpc/powermac/ata_macio.c > > Modified: head/sys/powerpc/powermac/ata_macio.c > ============================================================================== > --- head/sys/powerpc/powermac/ata_macio.c Wed Mar 25 03:02:03 2009 > (r190402) > +++ head/sys/powerpc/powermac/ata_macio.c Wed Mar 25 03:42:49 2009 > (r190403) > @@ -259,6 +259,10 @@ ata_macio_setmode(device_t parent, devic > > mode = ata_limit_mode(dev, mode, sc->max_mode); > > + /* XXX Some controllers don't work correctly with ATAPI DMA */ > + if (atadev->param.config & ATA_PROTO_ATAPI) > + mode = ata_limit_mode(dev, mode, ATA_PIO_MAX); > + > if (ata_controlcmd(dev, ATA_SETFEATURES, ATA_SF_SETXFER, 0, mode)) > return;
With this commit my iBook G4 boots successfully without setting `hw.ata.atapi_dma=0'. Thanks! It'd be best if I can use ATAPI DMA soon. regards, Weongyo Jeong _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
