I have a Plextor CD-RW connected as slave at ide1 and have
append="hdd=ide-scsi" in lilo.conf. Motherboard is AOpen
AK73-PRO which has VIA vt82c686b onboard.
On recent kernels, cdrecord (1.9) started to barf when trying to
write (both with and without --dummy). The system reports irq
timeouts for /dev/hdd. Reading data from /dev/scd0 (11,0) works
as expected. I would appreciate it if somebody can fix this.
The kernel is compiled with the following enabled.
CONFIG_BLK_DEV_IDESCSI=y
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_BLK_DEV_VIA82CXXX=y
CONFIG_IDEDMA_AUTO=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SR=y
CONFIG_BLK_DEV_SR_VENDOR=y
CONFIG_SR_EXTRA_DEVS=1
CONFIG_CHR_DEV_SG=y
Here are the lines from syslog when this problem occured.
Feb 24 13:20:31 linux kernel: scsi : aborting command due to timeout : pid 0,
scsi0, channel 0, id 0, lun 0 0x00 00 00 00 00 00
Feb 24 13:20:31 linux kernel: hdd: lost interrupt
Feb 24 13:20:52 linux kernel: scsi : aborting command due to timeout : pid 0,
scsi0, channel 0, id 0, lun 0 0x01 00 00 00 00 00
Feb 24 13:20:52 linux kernel: hdd: irq timeout: status=0xd0 { Busy }
Feb 24 13:20:52 linux kernel: hdd: ATAPI reset complete
Feb 24 13:20:52 linux kernel: hdd: irq timeout: status=0x80 { Busy }
Feb 24 13:20:52 linux kernel: hdd: ATAPI reset complete
Feb 24 13:20:53 linux kernel: hdd: irq timeout: status=0x80 { Busy }
Feb 24 13:20:53 linux kernel: hdc: status timeout: status=0x80 { Busy }
Feb 24 13:20:53 linux kernel: hdc: drive not ready for command
Feb 24 13:20:53 linux kernel: ide1: reset: success
Feb 24 13:21:13 linux kernel: scsi : aborting command due to timeout : pid 0,
scsi0, channel 0, id 0, lun 0 0x00 00 00 00 00 00
Feb 24 13:21:13 linux kernel: hdd: lost interrupt
Here is what hdparm -i /dev/hdd reports:
/dev/hdd:
Model=PLEXTOR CD-R PX-W8432T, FwRev=1.05, SerialNo=
Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic }
RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=unknown, BuffSize=0kB, MaxMultSect=0
(maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0
IORDY=on/off, tPIO={min:180,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: sdma0 sdma1 sdma2 mdma0 mdma1 *mdma2
And the following is from /proc/ide/via (before lost-interrupts
disables DMA for /dev/hdd). For /dev/hda and /dev/hdc (they are
hard disks), hdparm -d0 is run at the system startup time to
disable UDMA (I have 80-wire UDMA-100 cable on these channels,
but previously lost a lot of data without CRC errors, so am
being paranoid to do this for now).
----------VIA BusMastering IDE Configuration----------------
Driver Version: 3.20
South Bridge: VIA vt82c686b
Revision: ISA 0x40 IDE 0x6
BM-DMA base: 0xc000
PCI clock: 33MHz
Master Read Cycle IRDY: 0ws
Master Write Cycle IRDY: 0ws
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: 80w 80w
-------------------drive0----drive1----drive2----drive3-----
Transfer Mode: PIO PIO PIO 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: 60ns 50ns 60ns 90ns
Transfer Rate: 33.3MB/s 40.0MB/s 33.3MB/s 22.2MB/s
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