Hello Marcelo, On Wed, 31 May 2006 13:06:54 -0300 "Marcelo Magno T. Sales" <marcelo.sales@xxxxxxxxxxxxxxx> wrote: > Hi, > > I have several IBM desktops and some notebooks in which the IDE interface > is a SATA controller, most of them Intel. Here's lspci output: > ------------- > [marcelo.sales@sf002698 ~]$ /sbin/lspci | grep IDE > 00:1f.2 IDE interface: Intel Corporation 82801FB/FW (ICH6/ICH6W) SATA > Controller (rev 03) > ------------- > On these machines, I can't enable DMA on IDE devices. hdparm shows: > ------------- > [marcelo.sales@sf002698 ~]$ /sbin/hdparm /dev/hdc > /dev/hdc: > IO_support = 0 (default 16-bit) > unmaskirq = 0 (off) > using_dma = 0 (off) > keepsettings = 0 (off) > readonly = 0 (off) > readahead = 256 (on) > HDIO_GETGEO failed: Inappropriate ioctl for device > ------------- > When I try to enable DMA, I get: > ------------- > [marcelo.sales@sf002698 ~]$ su -c '/sbin/hdparm -d1 /dev/hdc' > /dev/hdc: > setting using_dma to 1 (on) > HDIO_SET_DMA failed: Operation not permitted > using_dma = 0 (off) > ------------- > I thought this was caused by lack of kernel support for the SATA > controller, but I've compiled the FC kernel and the vanilla kernel several > times, with different settings, and have got no luck on this. libata is > built and loaded, as shown by lsmod: > [marcelo.sales@sf002698 ~]$ /sbin/lsmod | grep libata > libata 58065 1 ata_piix > scsi_mod 129001 3 sg,libata,sd_mod > > What needs to be done to enable DMA support? I'm using kernel > 2.6.16-1.2122_FC5smp. Does this mean that none of the replies you got to your previous email provided a solution? Regards, -- wwp
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