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SubjectRe: UDMA not supported on my board
I tried this ide patch and i think UDMA is working dont know.
P5A-B Moderboard
ALi Aladdin V AGPset
ALi M1543

Kernel without udma:
[root@cray pgccsrc]# time cat pgccsrc.tar.gz >/dev/null
0.00 user 2.23 system 0:02.32 elapsed 95%CPU

[root@cray hdparm-3.5]# ./hdparm -t /dev/hda
/dev/hda:
Timing buffered disk reads: 64 MB in 8.95 seconds = 7.15 MB/sec

[root@cray hdparm-3.5]# ./hdparm -T /dev/hda
/dev/hda:
Timing buffer-cache reads: 128 MB in 2.33 seconds =54.94 MB/sec


With DMA:
[root@cray pgccsrc]# time cat pgccsrc.tar.gz >/dev/null
0.02 user 0.30 system 0:01.90 elapsed 16% CPU

/dev/hda:
Timing buffered disk reads: 64 MB in 5.73 seconds =11.17 MB/sec

/dev/hda:
Timing buffer-cache reads: 128 MB in 2.13 seconds =60.09 MB/sec

Model=QUANTUM FIREBALL EL5.1A, FwRev=A08.1100, SerialNo=64582625
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=10602/15/63, TrkSize=32256, SectSize=21298, ECCbytes=4
BuffType=3(DualPortCache), BuffSize=418kB, MaxMultSect=16, MultSect=off
DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=2(fast)
CurCHS=623/255/63, CurSects=10018890, LBA=yes, LBAsects=10018890
tDMA={min:120,rec:120}, DMA modes: sword0 sword1 sword2 mword0 mword1 mword2
IORDY=on/off, tPIO={min:120,w/IORDY:120}, PIO modes: mode3 mode4



-----------------------------------------------------------------------------
Henrik.Berglund@mds.mdh.se
http://www.mds.mdh.se/~adb94hbd/



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