[lkml]   [2004]   [Aug]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: dma problems with Serverworks CSB5 chipset
    > On Maw, 2004-08-03 at 19:08, Marcelo Tosatti wrote:
    >> ServerWorks OSB4/5 chipsets are known to not work reliably with the
    >> Linux
    >> IDE code. AFAIK its a hardware problem which we dont correctly work
    >> around.
    >> Have you tried disabling DMA?
    >> Bart and Alan are IDE experts, they can probably give you more useful
    >> information.
    > CSB5 is reliable, rock solidly so in my experience. OSB4 was the older
    > interface with problems. Are these systems SMP, what disks are you using
    > and in what IDE mode ?

    Yep, they are SMP(IBM blades with 2 Xeon 2.4Ghz). The blades use 1
    little 40g laptop drive( TOSHIBA MK4019GAXB ). The drive is running UDMA
    mode 4. Here is the output of /proc/ide/svwks:

    ServerWorks OSB4/CSB5/CSB6

    ServerWorks CSB5 Chipset (rev 93)
    ------------------------------- General Status
    --------------- Primary Channel ---------------- Secondary Channel
    enabled enabled
    --------------- drive0 --------- drive1 -------- drive0 ---------- drive1
    DMA enabled: yes yes no no
    UDMA enabled: yes yes no no
    UDMA enabled: 4 4 0 0
    DMA enabled: 2 2 2 2
    PIO enabled: 4 4 ? ?

    Let me know if you need any other specifics and thanks in advance for any


    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-03-22 14:04    [W:0.022 / U:2.320 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site