VIA Apollo IDE UDMA1?

[Daniel Egger <degger@fhm.edu>]

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Hija,

further investigation on my last mail discovered that another thing is
fishy; my first IDE drive works only un UDMA1 mode which is choosen by
the driver. Apart from never having seen that 22MB/s mode before both
the chipset and the drive are capable of more, the two drives on the
second channel also run in UDMA2.

The drive is a:
ATA device, with non-removable media
        Model Number:       WDC WD400EB-00CPF0                      
        Serial Number:      WD-WCAAT63853**
        Firmware Revision:  06.04G06
Standards:
        Supported: 5 4 3 2 
        Likely used: 6
Configuration:
        Logical         max     current
        cylinders       16383   4047
        heads           16      16
        sectors/track   63      255
        --
        CHS current addressable sectors:   16511760
        LBA    user addressable sectors:   78165360
        device size with M = 1024*1024:       38166 MBytes
        device size with M = 1000*1000:       40020 MBytes (40 GB)
Capabilities:
        LBA, IORDY(can be disabled)
        bytes avail on r/w long: 40     Queue depth: 1
        Standby timer values: spec'd by Standard, with device specific minimum
        R/W multiple sector transfer: Max = 16  Current = 16
        Recommended acoustic management value: 128, current value: 254
        DMA: mdma0 mdma1 mdma2 udma0 *udma1 udma2 udma3 udma4 udma5 
             Cycle time: min=120ns recommended=120ns
        PIO: pio0 pio1 pio2 pio3 pio4 
             Cycle time: no flow control=120ns  IORDY flow control=120ns

and everything from the last report is the same here.
/proc/ide/via says:
----------VIA BusMastering IDE Configuration----------------
Driver Version:                     3.29
South Bridge:                       VIA vt82c586b
Revision:                           ISA 0x47 IDE 0x6
Highest DMA rate:                   UDMA33
BM-DMA base:                        0xe000
PCI clock:                          33MHz
Master Read  Cycle IRDY:            1ws
Master Write Cycle IRDY:            1ws
BM IDE Status Register Read Retry:  yes
Max DRDY Pulse Width:               No limit
-----------------------Primary IDE-------Secondary IDE------
Read DMA FIFO flush:          yes                 yes
End Sector FIFO flush:         no                  no
Prefetch Buffer:              yes                 yes
Post Write Buffer:            yes                  no
Enabled:                      yes                 yes
Simplex only:                  no                  no
Cable Type:                   40w                 40w
-------------------drive0----drive1----drive2----drive3-----
Transfer Mode:       UDMA       DMA      UDMA      UDMA
Address Setup:       30ns     120ns      30ns      30ns
Cmd Active:          90ns      90ns      90ns      90ns
Cmd Recovery:        30ns      30ns      30ns      30ns
Data Active:         90ns     330ns      90ns      90ns
Data Recovery:       30ns     270ns      30ns      30ns
Cycle Time:          90ns     600ns      60ns      60ns
Transfer Rate:   22.0MB/s   3.3MB/s  33.0MB/s  33.0MB/s


-- 
Servus,
       Daniel

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