Citroklar wrote:

Hi there,

I posted that before, but I didn't get an answer, so I post again, this
time with a more recent kernel (2.6.10-rc1-bk6). I wonder if this is a
bug or just my setup.

I have a dvd writer (parallel ata) connected to a PATA/SATA converter
which in turn is connected to a Silicon Image 3114 PCI Card.

Now, funny thing is, the device gets detected somehow, but no /dev/sd*
is attached to it!

this is the dmesg output that troubles me:

ata1: SATA max UDMA/100 cmd 0xE881AC80 ctl 0xE881AC8A bmdma 0xE881AC00
irq 19
ata2: SATA max UDMA/100 cmd 0xE881ACC0 ctl 0xE881ACCA bmdma 0xE881AC08
irq 19
ata3: SATA max UDMA/100 cmd 0xE881AE80 ctl 0xE881AE8A bmdma 0xE881AE00
irq 19
ata4: SATA max UDMA/100 cmd 0xE881AEC0 ctl 0xE881AECA bmdma 0xE881AE08
irq 19
ata1: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4003 85:7c69 86:3e01 87:4003
88:207f
ata1: dev 0 ATA, max UDMA/133, 320173056 sectors: lba48
ata1: dev 0 configured for UDMA/100
scsi0 : sata_sil
ata2: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4003 85:7c69 86:3e01 87:4003
88:207f
ata2: dev 0 ATA, max UDMA/133, 320173056 sectors: lba48
ata2: dev 0 configured for UDMA/100
scsi1 : sata_sil
ata3: dev 0 cfg 49:0f00 82:421c 83:0000 84:0000 85:0000 86:0000 87:0000
88:0007
ata3: dev 0 ATAPI, max UDMA/33
ata3: dev 0 configured for UDMA/33
scsi2 : sata_sil
ata4: no device found (phy stat 00000000)
scsi3 : sata_sil
  Vendor: ATA       Model: Maxtor 6Y160M0    Rev: YAR5
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sda: 320173056 512-byte hdwr sectors (163929 MB)
SCSI device sda: drive cache: write back
 sda: sda1 sda2 < sda5 >
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
  Vendor: ATA       Model: Maxtor 6Y160M0    Rev: YAR5
  Type:   Direct-Access                      ANSI SCSI revision: 05
SCSI device sdb: 320173056 512-byte hdwr sectors (163929 MB)
SCSI device sdb: drive cache: write back
 sdb: sdb1 sdb2 < sdb5 >
Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0

And that's it. no attaching scsi cdrom drive at scsi2. :(

Is it a bug or is it a feature that will come later or is it just my
setup?

thanks,
Tobias Ottmar

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Hi Tobias

The support for ATAPI over SATA is there, however since it is still quite buggy, it is disabled by default.
You can enable the support by replacing "#undef ATA_ENABLE_ATAPI" in /include/linux/libata.h in you kernel source, with "#define ATA_ENABLE_ATAPI"
Personally I've noticed that since linux-2.6.9-bk3 it have been working without almost stalling the kernel.
Be aware though, that the support is apparently still somewhat limited. At least just about everything but ordinary mounting and handling of CD-ROM's 
on my DVD (also on SiI3112) causes the applications to stall until a couple of timeouts have occured. So no DVD viewing and no burning, but ordinary 
CD-ROM handling is working.

--
   Peter Christensen