kern/72703: Detection of Mitsumi FX4820T CDROM

[Jason Bacon]

>Number:         72703
>Category:       kern
>Synopsis:       Detection of Mitsumi FX4820T CDROM
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Oct 14 18:10:33 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Jason Bacon
>Release:        5.2.1R
>Organization:
Medical College of Wisconsin
>Environment:
FreeBSD tuvok.cellbio.mcw.edu 5.2.1-RELEASE FreeBSD 5.2.1-RELEASE #0: Thu Oct 14 11:00:06 CDT 2004     root at tuvok.cellbio.mcw.edu:/usr/obj/usr/src/sys/tuvok  i386
>Description:
The FX4830T CDROM is autosensed as UDMA33.  Frequent hardware errors are reported when using the drive in this mode.  "atacontrol mode 1 pio4 pio4" eliminates the hardware errors.

There is also a problem with atapicam installing this drive as da0 instead of cd0.

Timecounters tick every 10.000 msec
GEOM: create disk ad0 dp=0xc6f8e660
ad0: 76319MB <ST380011A> [155061/16/63] at ata0-master UDMA100
acd0: CDROM <FX4830T> at ata1-master UDMA33
GEOM: create disk da0 dp=0xc6f9d050
da0 at ata1 bus 0 target 0 lun 0
da0: <  > Fixed Direct Access SCSI-0 device 
da0: 33.000MB/s transfers
da0: 0MB (1 0 byte sectors: 0H 0S/T 0C)
(da0:ata1:0:0:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0 
(da0:ata1:0:0:0): error code 0
(da0:ata1:0:0:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0 
(da0:ata1:0:0:0): error code 0
Mounting root from ufs:/dev/ad0s1a

>How-To-Repeat:
      
>Fix:
atacontrol mode 1 pio4 pio4 allows acd0 to function properly.  I do not know how to correct the atapicam issue.
>Release-Note:
>Audit-Trail:
>Unformatted: