Commit Graph

21 Commits

Author SHA1 Message Date
ross e3f2f91bfb Split pci and eisa/isa attachment calls, plus misc cleanup. 2001-05-03 20:34:54 +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
simonb 5d4fa9b0ce Revert rev 1.31 of bha.c (and associtated changes in the headers and
config glue files).

Fixes PR kern/9841.  Tested by Tracy J. Di Marco White with a bt948
and 6 disks.
2000-10-03 14:07:36 +00:00
enami debe6e88b6 Calculate an offset of mailbox_in correctly by renaming BHA_MBO_OFFSET
to BHA_MBX_OFFSET and using it also for mailbox_in.  Since all mailboxes
should be placed in a single continuous memory due to a hardware limitation,
an offset of any mailbox can be/should be calculated using a same expression.
2000-04-19 02:39:12 +00:00
kleink ba9bb9dcd5 Cosmetical nit in previous. 2000-03-27 17:00:50 +00:00
kleink 230876cf26 Merge parts of chs-ubc2 into the trunk:
* Remove the casts to vaddr_t from the round_page() and trunc_page() macros to
  make them type-generic, which is necessary i.e. to operate on file offsets
  without truncating them.
* In due course, cast pointer arguments to these macros to an appropriate
  integral type (paddr_t, vaddr_t).

Originally done by Chuck Silvers, updated by myself.
2000-03-26 20:42:21 +00:00
thorpej a3ef0b7a6d Fix compilation of ISA bha front-end. PR #8528, Takahiro Kambe. 1999-10-01 18:17:12 +00:00
thorpej 415b44a62a Rework the Buslogic SCSI driver in preparation for some pending improvements
to the SCSIPI subsystem.
- Determine more characteristics about the board, including the number
  of concurrent commands that the processor can execute at a time.
- Rework memory allocation strategy so that we can do dynamic pre-allocation
  of resources according to workload.

Thanks to the Linux Buslogic driver for having some useful comments.
1999-09-30 23:12:28 +00:00
thorpej 7a9cc5bfbc Update for changed scsipi_xfer struct. 1998-12-09 08:37:50 +00:00
thorpej 5f0577babc Adapt to the new scsipi_adapter interface. 1998-11-19 21:43:00 +00:00
mycroft 62b1bf3e2e Assign my copyrights to TNF. 1998-08-15 10:51:16 +00:00
thorpej e08a44b196 - Perform all necessary bus_dmamap_sync() operations.
- Greatly simplify allocation and DMA mapping of the mailbox and ccbs.
- Be more robust against resource shortage errors, and report errors better.
1998-02-06 23:06:44 +00:00
thorpej 03a0c2d900 Implement a simple queueing mechanism that makes these drivers much
more robust in resource shortage situations, basically identical to
code I added to the "ahc" driver some time ago.

Thanks to Brad Spencer for the testing help.
1997-11-04 05:58:22 +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
thorpej fbc0df0a1a Pull thorpej-bus-dma branch into mainline. 1997-06-06 23:30:02 +00:00
mycroft 080350dc0d Use a temporary data structure for holding probe information, rather than a
full softc.
1997-03-28 23:47:08 +00:00
thorpej fca7fce17e Deal with targets > 7 on wide Buslogic controllers. Remember the "wide"
bit from the extended setup inquiry and key off it to:
- Force synchronous negotiation on targs > 7.
- Read additional information returned by wide cards on inquire setup.
- Read sync period on targs > 7.
- Display sync period/offset on targs > 7.
- Set scsi_link.max_target to 15.
cvs: ----------------------------------------------------------------------
1996-12-20 21:35:10 +00:00
jonathan 79b026a8f3 * Add command struct and modifier definitions for controlling the
ISA-compatible port space of PCI buslogic cards.

* Add call to bha_pci.c to disable the ISA-compatible ports of a PCI
  device.  The ISA-compatible ports are enabled by default, which
  causes the card to be autoconfigured a second time as an ISA device,
  which appears to deadlock the card.

* Change bha_cmd() to return the number of bytes it actually received
  in response to a command, or -1 on error.

*  Use heuristics (checking for bha-only registers, and checking the size
   of the response to BHA_INQURE_EXTENDED) to bha_find, to make sure the
   bha driver never matches an aha (Adaptec    1542 or compatible) device.

A single kernel should now boot on either Adaptec or BusLogic controllers,
provided we always probe for BusLogic devices before Adaptec devices,
but this has not yet been verified.
1996-11-05 03:04:28 +00:00
thorpej 16c4c5af26 New bus.h implementation/interface:
- No more distinction between i/o-mapped and memory-mapped
	  devices.  It's all "bus space" now, and space tags
	  differentiate the space with finer grain than the
	  bus chipset tag.
	- Add memory barrier methods.
	- Implement space alloc/free methods.
	- Implement region read/write methods (like memcpy to/from
	  bus space).
This interface provides a better abstraction for dealing with
machine-independent chipset drivers.
1996-10-21 22:24:37 +00:00
mycroft 80110252d0 Minor changes. 1996-09-01 00:54:34 +00:00
mycroft 06fdef11fd Split the BusLogic driver apart, and rename it to `bha (like BSDi). 1996-08-31 20:18:24 +00:00