Commit Graph

14 Commits

Author SHA1 Message Date
mrg c13e3a6693 use _KERNEL_OPT 2001-05-30 11:40:35 +00:00
bouyer 937a7a3ed9 Pull up the thorpej_scsipi branch to main branch.
This is a completely rewritten scsipi_xfer execution engine, and the
associated changes to HBA drivers. Overview of changes & features:
- All xfers are queued in the mid-layer, rather than doing so in an
  ad-hoc fashion in individual adapter drivers.
- Adapter/channel resource management in the mid-layer, avoids even trying
  to start running an xfer if the adapter/channel doesn't have the resources.
- Better communication between the mid-layer and the adapters.
- Asynchronous event notification mechanism from adapter to mid-layer and
  peripherals.
- Better peripheral queue management: freeze/thaw, sorted requeueing during
  recovery, etc.
- Clean separation of peripherals, adapters, and adapter channels (no more
  scsipi_link).
- Kernel thread for each scsipi_channel makes error recovery much easier
  (no more dealing with interrupt context when recovering from an error).
- Mid-layer support for tagged queueing: commands can have the tag type
  set explicitly, tag IDs are allocated in the mid-layer (thus eliminating
  the need to use buggy tag ID allocation schemes in many adapter drivers).
- support for QUEUE FULL and CHECK CONDITION status in mid-layer; the command
  will be requeued, or a REQUEST SENSE will be sent as appropriate.

Just before the merge syssrc has been tagged with thorpej_scsipi_beforemerge
2001-04-25 17:53:04 +00:00
enami d0ad49a001 Backout previous change, and rather, remove all protection but the one
actually currently required.  Suggested by Charles M. Hannum.
1998-02-13 08:28:16 +00:00
enami ef09ae656f Fix or add protection for mutiple inclusion. 1998-02-13 04:19:13 +00:00
christos 15839e5d3d PR/4328: Matthias Scheler: Syntax errors in debug macros. 1997-10-24 15:44:42 +00:00
enami f86cc57e92 - Rename PIDEBUG back to SCSIDEBUG, since other files are still
using SCSIDEBUG.
- Don't #undef PIDEBUG unconditionally.
1997-10-03 15:12:12 +00:00
bouyer 6f3bab1f59 Merge scsipi branch in the mainline. This add support for ATAPI devices
(currently only CD-ROM drives on i386). The sys/dev/scsipi system provides 2
busses to which devices can attach (scsibus and atapibus). This needed to
change some include files and structure names in the low level scsi drivers.
1997-08-27 11:22:52 +00:00
christos 9a2c8cf28c revert previous kprintf change 1996-10-12 23:23:13 +00:00
christos 9beb92aad7 printf -> kprintf, sprintf -> ksprintf 1996-10-10 23:32:59 +00:00
mycroft 8fd135209c Numerous changes. Many bugs fixed, better autoconfig, a few new features. 1994-12-28 19:42:47 +00:00
mycroft fd32202948 Replace dev_unit with device_softc in scsi_link. Change argument to foostart()
to void*.
1994-11-21 10:39:09 +00:00
cgd fccfa11af5 New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD' 1994-06-29 06:39:25 +00:00
briggs 80f5666771 If SCSI_DEBUG is on, a structure member wasn't updated from adapter_unit
to scsibus.
1994-01-22 14:16:58 +00:00
mycroft 37548328a1 Under construction... 1993-11-24 04:52:44 +00:00