SiI2112 + Seagate + nFroce2: no DMA!

From: manu (hislen_at_mindspring.com)
Date: 01/01/03

  • Next message: Rusty Russell: "CPU Hotplug: Hotplug Script And SIGPWR" 
    Date:	Tue, 31 Dec 2002 21:55:59 -0800
To: linux-kernel@vger.kernel.org

    Hi,

    Forgive me for intruding in this list as an outsider.

    I'm about to give up on my SATA drive as I can't get it to work properly.
    So I thought I may try asking the experts before falling back to PATA.

    I have seen many mails reporting the same issue, some of them 6-month old:

    - SATA drive comes up in pio mode, not in dma
    - trying to turn on dma with hdparm is a nightmare: I/O errors, crash
    with data corruption... I tried both:

      hddarm -d1 /dev/hde

    and:

      hdparm -u1 -c3 -d1 -X66 /dev/hde

    crash in both cases :-((

    Here's my equipment:

    ABIT AN7 motherboard (nForce2 chipset, SiI3112 SATA controller)
    AMD Athlon XP 2600+ (+ 512 DDR / 400 MHz)
    SATA HD Seagate Barracuda 160 Gb

    The SATA HD is my only drive. The only thing connected to my IDE
    controllers is a DVD/CD combo.

    Running Linux Redhat 9.0
    kernel 2.4.20-28.9

    Traces from dmesg:

    <<<<<<<<<<
    ...
    Uniform Multi-Platform E-IDE driver Revision: 7.00beta3-.2.4
    ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
    NFORCE2: IDE controller at PCI slot 00:09.0
    NFORCE2: chipset revision 162
    NFORCE2: not 100% native mode: will probe irqs later
    AMD_IDE: PCI device 10de:0065 (nVidia Corporation) (rev a2) UDMA100
    controller o
    n pci00:09.0
        ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
        ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
    SiI3112 Serial ATA: IDE controller at PCI slot 01:0b.0
    SiI3112 Serial ATA: chipset revision 2
    SiI3112 Serial ATA: not 100% native mode: will probe irqs later
    , BIOS settings: hde:pio, hdf:pio
    , BIOS settings: hdg:pio, hdh:pio
    hda: PIONEER DVD-RW DVR-106D, ATAPI CD/DVD-ROM drive
    hde: ST3160023AS, ATA DISK drive
    ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    ide2 at 0xe080d080-0xe080d087,0xe080d08a on irq 11
    hde: attached ide-disk driver.
    hde: host protected area => 1
    hde: 312581808 sectors (160042 MB) w/8192KiB Cache, CHS=19457/255/63
    ide-floppy driver 0.99.newide
    Partition check:
     hde: hde1 hde2 hde3
    ide-floppy driver 0.99.newide
    md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
    md: Autodetecting RAID arrays.
    md: autorun ...
    md: ... autorun DONE.
    >>>>>>>>>>

    I've been googling for days now and could not come accross a solution,
    on the contrary I came under the impression that the combination of
    SiI3112 +and Seagate was doomed.

    I cannot use this brand new computer for anything else then mail and
    web, performance is catastrophic:

    <<<<<<<<<<
    [root]# hdparm -Tt /dev/hde

    /dev/hde:
     Timing buffer-cache reads: 128 MB in 0.33 seconds =387.88 MB/sec
     Timing buffered disk reads: 64 MB in 48.49 seconds = 1.32 MB/sec
    >>>>>>>>>>

    1.32 MB !!!!! I should be getting 50 MB at least.

    Isn't there a solution??

    I am willing to try patches of experimental code. At this point I am
    looking at reinstalling everything on a PATA drive anyway, so I have
    nothing to loose.

    Thanks,

    Emmanuel.

    PS: please CC me in the reply as I am not subscribed to this list.

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