Kenneth D. Merry 56eac725a3 Fix ATAPI/USB/Firewire CDROM drive handling in cd(4) and hopefully fix ... a number of related problems along the way. - Automatically detect CDROM drives that can't handle 6 byte mode sense and mode select, and adjust our command size accordingly. We have to handle this in the cd(4) driver (where the buffers are allocated), since the parameter list length is different for the 6 and 10 byte mode sense commands. - Remove MODE_SENSE and MODE_SELECT translation removed in ATAPICAM and in the umass(4) driver, since there's no way for that to work properly. - Add a quirk entry for CDROM drives that just hang when they get a 6 byte mode sense or mode select. The reason for the quirk must be documented in a PR, and all quirks must be approved by ken@FreeBSD.org. This is to make sure that we fully understand why each quirk is needed. Once the CAM_NEW_TRAN_CODE is finished, we should be able to remove any such quirks, since we'll know what protocol the drive speaks (SCSI, ATAPI, etc.) and therefore whether we should use 6 or 10 byte mode sense/select commands. - Change the way the da(4) handles the no_6_byte sysctl. There is now a per-drive sysctl to set the minimum command size for that particular disk. (Since you could have multiple disks with multiple requirements in one system.) - Loader tunable support for all the sysctls in the da(4) and cd(4) drivers. - Add a CDIOCCLOSE ioctl for cd(4) (bde pointed this out a long time ago). - Add a media validation routine (cdcheckmedia()) to the cd(4) driver, to fix some problems bde pointed out a long time ago. We now allow open() to succeed no matter what, but if we don't detect valid media, the user can only issue CDIOCCLOSE or CDIOCEJECT ioctls. - The media validation routine also reads the table of contents off the drive. We use the table of contents to implement the CDIOCPLAYTRACKS ioctl using the PLAY AUDIO MSF command. The PLAY AUDIO TRACK INDEX command that we previously used was deprecated after SCSI-2. It works in every SCSI CDROM I've tried, but doesn't seem to work on ATAPI CDROM drives. We still use the play audio track index command if we don't have a valid TOC, but I suppose it'll fail anyway in that case. - Add _len() versions of scsi_mode_sense() and scsi_mode_select() so that we can specify the minimum command length. - Fix a couple of formatting problems in the sense printing code. MFC after: 4 weeks		2003-02-21 06:19:38 +00:00
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scsi	Fix ATAPI/USB/Firewire CDROM drive handling in cd(4) and hopefully fix	2003-02-21 06:19:38 +00:00
cam_ccb.h
cam_debug.h
cam_periph.c	Back out M_* changes, per decision of the TRB.	2003-02-19 05:47:46 +00:00
cam_periph.h
cam_queue.c	Fix typos, mostly s/ an / a / where appropriate and a few s/an/and/	2002-12-30 21:18:15 +00:00
cam_queue.h
cam_sim.c	Back out M_* changes, per decision of the TRB.	2003-02-19 05:47:46 +00:00
cam_sim.h
cam_xpt_periph.h
cam_xpt_sim.h
cam_xpt.c	Back out M_* changes, per decision of the TRB.	2003-02-19 05:47:46 +00:00
cam_xpt.h
cam.c
cam.h