> ----- Original Message ----- > From: "Jorge Almeida" <[EMAIL PROTECTED]> > To: [email protected] > Subject: no DMA > Date: Wed, 21 Mar 2007 09:51:11 +0000 (WET) > > > hdparm is unable to do its work: hdparm -d1 -c3 -m16 /dev/hda says > "HDIO-SET-DMA: operation not permitted". And DMA is off, according to > hdparm /dev/hda > > The obvious answer would be lack of support in the kernel. But: > linux-2.6.16.38 $ grep DMA .config > CONFIG_GENERIC_ISA_DMA=y > CONFIG_ISA_DMA_API=y > CONFIG_BLK_DEV_IDEDMA_PCI=y > # CONFIG_BLK_DEV_IDEDMA_FORCED is not set > CONFIG_IDEDMA_PCI_AUTO=y > # CONFIG_IDEDMA_ONLYDISK is not set > CONFIG_BLK_DEV_IDEDMA=y > # CONFIG_IDEDMA_IVB is not set > CONFIG_IDEDMA_AUTO=y > # CONFIG_SCSI_PDC_ADMA is not set > CONFIG_IEEE1394_SBP2_PHYS_DMA=y > > So, what did I miss? > (It's not a hardware problem, because DMA is on when I boot Gentoo in > the same box.) > > -- > Jorge Almeida
I think you missed the driver for your ide chipset. If there is one, then don't enable generic ide chipset support, it might prevent dma. The generic driver has no dma support of any kind.. Lauri -- _______________________________________________ Surf the Web in a faster, safer and easier way: Download Opera 9 at http://www.opera.com Powered by Outblaze -- http://linuxfromscratch.org/mailman/listinfo/blfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
