Udma(33) on Ali 1533

From: Camm Maguire (camm@enhanced.com)
Date: Mon Jun 26 2000 - 10:51:13 EST


Greetings! We've recently purchased two similar machines, both with
Ali 1533 ide controllers (capable of udma(33)). One has a 6G Udma(66)
capable drive, the other a 20G Udma(66) capable drive. I'm running
the marvelous ide patch against 2.2.16. The former negotiates to Udma
mode 2, the latter only to dma mode 2. Why is this? Bios settings
are the same, unless I've made a mistake. Both machines have drives on
ide1 as well, but of different capabilities. Could this be the cause?

Thanks!

=============================================================================

Machine 1:

intech9:/home/camm# cat /proc/ide/ali

                                Ali M15x3 Chipset.
                                ------------------
PCI Clock: 33.
CD_ROM FIFO:No , CD_ROM DMA:Yes
FIFO Status: contains 0 Words, runs.

-------------------primary channel-------------------secondary channel---------

channel status: Off Off
both channels togth: Yes Yes
Channel state: OK OK
Add. Setup Timing: 8T 8T
Command Act. Count: 8T 8T
Command Rec. Count: 16T 16T

----------------drive0-----------drive1------------drive0-----------drive1------

DMA enabled: Yes No Yes No
FIFO threshold: 8 Words 4 Words 8 Words 4 Words
FIFO mode: FIFO On FIFO Off FIFO On FIFO Off
Dt RW act. Cnt 3T 8T 3T 5T
Dt RW rec. Cnt 1T 16T 1T 3T

-----------------------------------UDMA Timings--------------------------------

UDMA: OK OK No No
UDMA timings: 2.5T 3.5T 1.5T 1.5T

intech9:/home/camm# hdparm -I /dev/hda

/dev/hda:

 Model=FUJITSU MPE3064AT, FwRev=ED-03-08, SerialNo=05382257
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=13410/15/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=0(?), BuffSize=512kB, MaxMultSect=16, MultSect=16
 DblWordIO=no, OldPIO=2, DMA=yes, OldDMA=0
 CurCHS=13410/15/63, CurSects=12672450, LBA=yes, LBAsects=12672450
 tDMA={min:120,rec:120}, DMA modes: mword0 mword1 mword2
 IORDY=yes, tPIO={min:120,w/IORDY:120}, PIO modes: mode3 mode4
 UDMA modes: mode0 mode1 *mode2 mode3 mode4

Machine 2:

wisdom# cat /proc/ide/ali

                                Ali M15x3 Chipset.
                                ------------------
PCI Clock: 33.
CD_ROM FIFO:No , CD_ROM DMA:Yes
FIFO Status: contains 0 Words, runs.

-------------------primary channel-------------------secondary channel---------

channel status: Off Off
both channels togth: Yes Yes
Channel state: OK OK
Add. Setup Timing: 8T 8T
Command Act. Count: 8T 8T
Command Rec. Count: 16T 16T

----------------drive0-----------drive1------------drive0-----------drive1------

DMA enabled: Yes No No Yes
FIFO threshold: 8 Words 4 Words 4 Words 4 Words
FIFO mode: FIFO On FIFO Off FIFO Off FIFO Off
Dt RW act. Cnt 3T 8T 8T 8T
Dt RW rec. Cnt 1T 16T 16T 16T

-----------------------------------UDMA Timings--------------------------------

UDMA: No No No No
UDMA timings: 2.5T 1.5T 1.5T 1.5T

wisdom# hdparm -I /dev/hda

/dev/hda:

 Model=DW CDW02B5 A , FwRev=611.M361, SerialNo=DWW-9M94301040 4
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=40
 BuffType=3(DualPortCache), BuffSize=2048kB, MaxMultSect=16, MultSect=16
 DblWordIO=no, OldPIO=2, DMA=yes, OldDMA=0
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=40088160
 tDMA={min:120,rec:120}, DMA modes: mword0 mword1 *mword2
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, PIO modes: mode3 mode4
 UDMA modes: mode0 mode1 mode2 mode3 mode4

-- 
Camm Maguire			     			camm@enhanced.com
==========================================================================
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah

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