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    SubjectLost Busmaster-DMA in 2.0.x?
    Date
    Hi all,

    I have one problem with 2.0.0/2.0.1:
    My EIDE-controller does not longer work as Busmaster-DMA.
    Yes I have configured:

    #
    # Block devices
    #
    CONFIG_BLK_DEV_FD=m
    CONFIG_BLK_DEV_IDE=y
    # CONFIG_BLK_DEV_HD_IDE is not set
    CONFIG_BLK_DEV_IDEDISK=y
    CONFIG_BLK_DEV_IDECD=m
    # CONFIG_BLK_DEV_IDETAPE is not set
    # CONFIG_BLK_DEV_IDEFLOPPY is not set
    # CONFIG_BLK_DEV_IDESCSI is not set
    # CONFIG_BLK_DEV_CMD640 is not set
    # CONFIG_BLK_DEV_RZ1000 is not set
    CONFIG_BLK_DEV_IDEPCI=y
    CONFIG_BLK_DEV_IDEDMA=y
    # CONFIG_BLK_DEV_OFFBOARD is not set
    CONFIG_IDEDMA_AUTO=y

    But the kernel reports at boot:

    PIIX: IDE controller on PCI bus 00 dev 08
    PIIX: not 100% native mode: will probe irqs later
    PIIX: neither IDE port enabled (BIOS)
    hda: IBM-DSOA-21080, ATA DISK drive
    ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    hda: IBM-DSOA-21080, 1033MB w/96kB Cache, CHS=525/64/63

    You see, I have only one controller, the machine is a
    IBM Thinkpad 760.
    I am also not able to set dma with hdparm.

    The situation with 2.0.36:

    ide: i82371 PIIX (Triton) on PCI bus 0 function 9
    ide0: BM-DMA at 0xfcf0-0xfcf7
    Jan 4 10:00:58 Stinkpad kernel: hda: IBM-DSOA-21080, 1033MB w/96kB Cache,
    CHS=5 25/64/63, DMA
    hdb: SANYO CRD-S54P, ATAPI CDROM drive
    ide0 at 0x1f0-0x1f7,0x3f6 on irq 14

    Any hints?

    Michael
    --
    wahlers@uni-duesseldorf.de

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