Messages in this thread | | | Date | Tue, 6 May 2003 16:07:51 +0200 | From | Jens Axboe <> | Subject | Re: [IDE] trying to make MO drive work with ide-floppy/ide-cd |
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On Tue, May 06 2003, Pascal Schmidt wrote: > On 6 May 2003, Alan Cox wrote: > > > I'm not aware of any plans to make ide-floppy handle that disk, or reasons > > you would want to use ide floppy in 2.5 not the ide-cd layer (which does > > now handle writable devices I believe). > > Okay, didn't think of that, so I now tried using ide-cd for the MO drive > (2.5.68+bkcvs). I still had to patch ide-probe.c, just passing "hde=cdrom" > did not do what I wanted. ;)
Uh nasty :)
> Now I get the following at bootup: > > hde: FUJITSU MCC3064AP, ATAPI OPTICAL drive > hde: set_drive_speed_status: status=0x51 { DriveReady SeekComplete Error } > hde: set_drive_speed_status: error=0x04 > Uniform CD-ROM driver Revision: 3.12 > end_request: I/O error, dev hde, sector 0 > hde: packet command error: status=0x51 { DriveReady SeekComplete Error } > hde: packet command error: error=0x50 > end_request: I/O error, dev hde, sector 0 > ATAPI device hde: > Error: Illegal request -- (Sense key=0x05) > Invalid field in command packet -- (asc=0x24, ascq=0x00) > The failed "Mode Sense 10" packet command was: > "5a 00 2a 00 00 00 00 00 18 00 00 00 00 00 00 00 " > Error in command data byte 8800 > hde: packet command error: status=0x51 { DriveReady SeekComplete Error } > hde: packet command error: error=0x50 > end_request: I/O error, dev hde, sector 0 > ATAPI device hde: > Error: Illegal request -- (Sense key=0x05) > Invalid field in command packet -- (asc=0x24, ascq=0x00) > The failed "Mode Sense 10" packet command was: > "5a 00 2a 00 00 00 00 00 18 00 00 00 00 00 00 00 " > Error in command data byte 8800 > end_request: I/O error, dev hde, sector 0
It barfs at a lot of commands, not surprisingly. ide-cd really has no concept of devices other than cd/dvd.
> This doesn't look encouraging. However, the MO drive sort of works: > > # mount -t ext2 /dev/hde /mnt/mo > mount: block device /dev/hde is write-protected, mounting read-only > > The disk gets mounted and reading works just fine. No write support, > though. To reiterate, everything works under 2.4 using ide-scsi.
You need to patch cdrom.c as well:
if ((fp->f_mode & FMODE_WRITE) && !CDROM_CAN(CDC_DVD_RAM)) return -EROFS;
> What can I do to help get this drive supported under 2.5/ide-cd?
I'm tempted to say ide-scsi + sd, but that goes against my principles... It shouldn't be too much work to make ide-cd work gracefully.
-- Jens Axboe
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