I looked thru marc's archives, and i'm not finding anything specific to
this problem, tho I do believe it is probably a known issue.
ASUS A7v266-E
PDC20265
LITE-ON LTR-32123S
only device on the Promise IDE is the cd-rw drive. have four hard drives
on the VIA IDE.
running kernel 2.4.21-rc1-ac2 + preempt + rmap15g + i2c-sensors
burning now works using cdrecord ATAPI (previous was 2.4.21-pre5-ac3
where the ide-scsi was too unstable)
at present, reading the cd drive takes 80+% of CPU system time...
I would like to be able to enable DMA. i tried doing it manually with
hdparm. enabling 32-bit IO or enabling DMA would both make it just not
work.
[root@tabriel root]# hdparm /dev/hdg
/dev/hdg:
HDIO_GET_MULTCOUNT failed: Invalid argument
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 0 (off)
keepsettings = 0 (off)
readonly = 1 (on)
readahead = 8 (on)
HDIO_GETGEO failed: Invalid argument
[root@tabriel root]#
[root@tabriel root]# hdparm -I /dev/hdg
/dev/hdg:
ATAPI CD-ROM, with removable media
Model Number: LITE-ON LTR-32123S
Serial Number:
Firmware Revision: XS0R
Standards:
Used: ATAPI for CD-ROMs, SFF-8020i, r2.5
Supported: CD-ROM ATAPI-2
Configuration:
DRQ response: 50us.
Packet size: 12 bytes
Capabilities:
LBA, IORDY(cannot be disabled)
DMA: *mdma0 mdma1 mdma2 udma0 udma1 udma2
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=227ns IORDY flow control=120ns
[root@tabriel root]#
any more info needed, just ask. any help much appreciated.
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This archive was generated by hypermail 2b29 : Wed Apr 30 2003 - 22:00:31 EST