Commit Graph

8 Commits

Author SHA1 Message Date
thorpej 0884f20bf7 bzero -> memset 2001-07-07 16:13:44 +00:00
thorpej 7711ad565b bcopy -> memcpy 2001-07-07 15:53:13 +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
thorpej fc96443d15 New callout mechanism with two major improvements over the old
timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
  resource allocation.
- Insertion and removal of callouts is constant time, important as
  this facility is used quite a lot in the kernel.

The old timeout()/untimeout() API has been removed from the kernel.
2000-03-23 07:01:25 +00:00
thorpej 63b8530b4e Update for SCSPI changes. 1999-09-30 23:04:39 +00:00
minoura 1ff51fea1a Some x68k conditionals (I don't know why these are needed...). 1999-03-14 16:14:54 +00:00
minoura 38803874bb Translated Japanese comments. 1999-02-19 16:19:53 +00:00
minoura 4d5a04afc4 MI version of the Fujitsu MB89352 SCSI Protocol Controler (SPC) driver.
Based on experimental NetBSD/pc98 ISA/PISA version, which was derived
from the MD /sys/arch/x68k/dev/spc.c.
1999-02-13 17:33:14 +00:00