Can't get UDMA to work...

[Will Day <willday@rom.oit.gatech.edu>]

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I just picked up a 13gb Western Digital drive to put in a linux machine,
but am having difficulty getting it to use UDMA.  On bootup, it reports:

   Partition check:
    sda: sda1 sda2
    hda:hda: timeout waiting for DMA
   hda: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
   hda: timeout waiting for DMA
   hda: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
   hda: timeout waiting for DMA
   hda: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
   hda: timeout waiting for DMA
   hda: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
   hda: DMA disabled
   ide0: reset: success
    hda1 hda2

The system was installed on a borrowed scsi disk, so it's booting the
system fine; the goal is to move the system to the IDE disk, but first I
want to get it talking to the disk properly.  After boot, 'hdparm /dev/hda'
reports:

   /dev/hda:
    multcount    = 16 (on)
    I/O support  =  0 (default 16-bit)
    unmaskirq    =  0 (off)
    using_dma    =  0 (off)
    keepsettings =  0 (off)
    nowerr       =  0 (off)
    readonly     =  0 (off)
    readahead    =  8 (on)
    geometry     = 1662/255/63, sectors = 26712000, start = 0

Trying to enable DMA with "hdparm -d1" at this point also produces the
timeout errors.

I read over the Ultra-DMA Mini-Howto, and applied the ide patch to the
kernel (2.2.17), with these options:

   CONFIG_BLK_DEV_IDE=y
   # CONFIG_BLK_DEV_HD_IDE is not set
   CONFIG_BLK_DEV_IDEDISK=y
   # CONFIG_BLK_DEV_IDETAPE is not set
   # CONFIG_BLK_DEV_IDEFLOPPY is not set
   # CONFIG_BLK_DEV_IDESCSI is not set
   CONFIG_BLK_DEV_IDEPCI=y
   CONFIG_IDEPCI_SHARE_IRQ=y
   CONFIG_BLK_DEV_IDEDMA=y
   CONFIG_IDEDMA_AUTO=y
   CONFIG_IDEDMA_NEW_DRIVE_LISTINGS=y
   CONFIG_IDEDMA_PCI_EXPERIMENTAL=y
   # CONFIG_IDEDMA_PCI_WIP is not set
   CONFIG_BLK_DEV_PIIX=y
   CONFIG_PIIX_TUNING=y
   # CONFIG_IDEDMA_IVB is not set
   # CONFIG_IDE_CHIPSETS is not set
   CONFIG_BLK_DEV_IDE_MODES=y

It still gives the above errors, now with an additional message:

   ide_dmaproc: chipset supported ide_dma_timeout func only: 14

I also downloaded and ran the utility from the WD website (wd_ata66.exe), to
switch the drive from UDMA/66 to only UDMA/33, since the BX-based BH6
motherboard only supports 33.  That didn't seem to make any difference.

I also tried disabling UDMA, as well as setting PIO modes, in the BH6 bios,
but this didn't seem to make any difference.  I was overclocking the system
bus, so I set it back to 100MHz, but that didn't seem to make any
difference either.

Other ide messages from boot:
   Uniform Multi-Platform E-IDE driver Revision: 6.30
   ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
   PIIX4: IDE controller on PCI bus 00 dev 39
   PIIX4: chipset revision 1
   PIIX4: not 100% native mode: will probe irqs later
       ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:pio
       ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
   hda: WDC AC313600D, ATA DISK drive
   hdb: CD620E, ATAPI CDROM drive
   ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
   hda: WDC AC313600D, 13042MB w/1966kB Cache, CHS=1662/255/63, UDMA(33)
   hdb: ATAPI 5X CD-ROM drive, 240kB Cache

And from 'hdparm -i /dev/hda':
   Model=WDC AC313600D, FwRev=J7JOA30K, SerialNo=WD-WT6710449014
   Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
   RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=34
   BuffType=DualPortCache, BuffSize=1966kB, MaxMultSect=16, MultSect=16
   CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=26712000
   IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
   PIO modes: pio0 pio1 pio2 pio3 pio4 
   DMA modes: mdma0 mdma1 mdma2 udma0 udma1 *udma2 

And from 'hdparm -I /dev/hda':
   Model=CA136300 D                      , FwRev=3AK0DW C, SerialNo=6T17409410 4
   Config={ }
   RawCHS=16/0/0, TrkSize=63, SectSize=0, ECCbytes=19023
   BuffType=34, BuffSize=9499kB, MaxMultSect=0
   (maybe): CurCHS=63/64528/251, CurSects=-1749024496, LBA=yes, LBAsects=458752
   IORDY=no
   PIO modes: pio0 
   DMA modes: 

And, from 'lspci':
   00:00.0 Host bridge: Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge (rev 03)
   00:01.0 PCI bridge: Intel Corporation 440BX/ZX - 82443BX/ZX AGP bridge (rev 03)
   00:07.0 ISA bridge: Intel Corporation 82371AB PIIX4 ISA (rev 02)
   00:07.1 IDE interface: Intel Corporation 82371AB PIIX4 IDE (rev 01)
   00:07.2 USB Controller: Intel Corporation 82371AB PIIX4 USB (rev 01)
   00:07.3 Bridge: Intel Corporation 82371AB PIIX4 ACPI (rev 02)
   00:09.0 SCSI storage controller: Symbios Logic Inc. (formerly NCR) 53c875 (rev 26)
   00:0b.0 Ethernet controller: Lite-On Communications Inc LNE100TX (rev 20)
   00:0d.0 Ethernet controller: Lite-On Communications Inc LNE100TX (rev 20)
   00:0f.0 VGA compatible controller: Alliance Semiconductor Corporation ProMotion AT3D (rev 02)

And, from /proc/interrupts:
              CPU0       
     0:     132975          XT-PIC  timer
     1:          2          XT-PIC  keyboard
     2:          0          XT-PIC  cascade
     4:       1297          XT-PIC  serial
     8:          1          XT-PIC  rtc
    10:      46786          XT-PIC  eth0
    12:      19420          XT-PIC  sym53c8xx, PS/2 Mouse
    13:          1          XT-PIC  fpu
    14:         12          XT-PIC  ide0
    15:          7          XT-PIC  ide1
   NMI:          0

And from /proc/ide/drivers:
   ide-cdrom version 4.58
   ide-disk version 1.09

And from /proc/ide/piix:
                                 Intel PIIX4 Ultra 33 Chipset.
   ------------- Primary Channel ---------------- Secondary Channel -----------
                  enabled                          enabled
   ------------- drive0 --------- drive1 -------- drive0 ---------- drive1 ----
   DMA enabled:    no               no              yes               no 
   UDMA enabled:   yes              no              no                no 
   UDMA enabled:   2                X               X                 X
   UDMA
   DMA
   PIO

Right now, I'm kinda at a loss - I'm not sure what else to try.  I did some
searching on dejanews and of various HTML archives of the linux-kernel list,
but couldn't find any solutions that seemed to apply.

Also, I'm really more familiar with SCSI - the only IDE drives I've ever had
before now were 2gb or less - so I really know little to nothing about these
new-fangled PIO and UDMA things. :)  Thus, I may be missing something obvious.

Any hints would be appreciated.

Thanks,
-- 
Will Day     <PGP mail preferred>     OIT / O&E / Technical Support
willday@rom.oit.gatech.edu            Georgia Tech, Atlanta 30332-0715
  -> Opinions expressed are mine alone and do not reflect OIT policy <-
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety.
    Benjamin Franklin, Pennsylvania Assembly, Nov. 11, 1755

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