Commit Graph

18 Commits

Author SHA1 Message Date
Marius Strobl
93060c6c1b o Fix style(9) bugs and similar nits.
o Merge ncr53c9x.c from NetBSD:
  1.115: fix variable shadowing
  1.118: __inline -> inline
  1.121: fix empty if
2008-07-22 13:51:21 +00:00
Scott Long
b50569b71d Prepare for future integration between CAM and newbus. xpt_bus_register
now takes a device_t to be the parent of the bus that is being created.
Most SIMs have been updated with a reasonable argument, but a few exceptions
just pass NULL for now.  This argument isn't used yet and the newbus
integration likely won't be ready until after 7.0-RELEASE.
2007-06-17 05:55:54 +00:00
Scott Long
2b83592fdc Remove Giant from CAM. Drivers (SIMs) now register a mutex that CAM will
use to synchornize and protect all data objects that are used for that
SIM.  Drivers that are not yet MPSAFE register Giant and operate as
usual.  RIght now, no drivers are MPSAFE, though a few will be changed
in the coming week as this work settles down.

The driver API has changed, so all CAM drivers will need to be recompiled.
The userland API has not changed, so tools like camcontrol do not need to
be recompiled.
2007-04-15 08:49:19 +00:00
Matt Jacob
bd3fd815a7 2nd and final commit that moves us to CAM_NEW_TRAN_CODE
as the default.

Reviewed by multitudes.
2006-11-02 00:54:38 +00:00
Matt Jacob
fa9ed86506 The first of 3 major steps to move the CAM layer forward to using
the CAM_NEW_TRAN_CODE that has been in the tree for some years now.

This first step consists solely of adding to or correcting
CAM_NEW_TRAN_CODE pieces in the kernel source tree such
that a both a GENERIC (at least on i386) and a LINT build
with CAM_NEW_TRAN_CODE as an option will compile correctly
and run (at least with some the h/w I have).

After a short settle time, the other pieces (making
CAM_NEW_TRAN_CODE the default and updating libcam
and camcontrol) will be brought in.

This will be an incompatible change in that the size of structures
related to XPT_PATH_INQ and XPT_{GET,SET}_TRAN_SETTINGS change
in both size and content. However, basic system operation and
basic system utilities work well enough with this change.

Reviewed by:	freebsd-scsi and specific stakeholders
2006-10-31 05:53:29 +00:00
Ruslan Ermilov
3238c6bd33 Fix -Wundef from compiling the amd64 LINT. 2005-12-04 10:06:06 +00:00
Marius Strobl
65fb49a994 - Try to not leak resources in the attach functions of the esp(4) SBus
front-end and the LSI64854 and NCR53C9x code in case one of these
  functions fails. Add detach functions to these parts and make esp(4)
  detachable.
- Revert rev. 1.7 of esp_sbus.c, since rev. 1.34 of sbus.c the clockfreq
  IVAR defaults to the per-child values.
- Merge ncr53c9x.c rev. 1.111 from NetBSD (partial):
  On reset, clear state flags and the msgout queue.
  In NetBSD code to notify the upper layer (i.e. CAM in FreeBSD) on reset
  was also added with this revision. This is believed to be not necessary
  in FreeBSD and was not merged.
  This makes ncr53c9x.c to be in sync with NetBSD up to rev. 1.114.
- Conditionalize the LSI64854 support on sbus(4) only instead of sbus(4)
  and esp(4) as it's also required for the 'dma', 'espdma' and 'ledma'
  busses/devices as well as the 'SUNW,bpp' device (printer port) which
  all hang off of sbus(4).
- Add a driver for the 'dma', 'espdma' and 'ledma' (pseudo-)busses/
  devices. These busses and devices actually represent the LSI64854 DMA
  engines for the ESP SCSI and LANCE Ethernet controllers found on the
  SBus of Ultra 1 and SBus add-on cards. With 'espdma' and 'ledma' the
  'esp' and 'le' devices hang off of the respective DMA bus instead of
  directly from the SBus. The 'dma' devices are either also used in this
  manner or on some add-on cards also as a companion device to an 'esp'
  device which also hangs off directly from the SBus. With the latter
  variant it's a bit tricky to glue the DMA engine to the core logic of
  the respective 'esp' device. With rev. 1.35 of sbus.c we are however
  guaranteed that such a 'dma' device is probed before the respective
  'esp' device which simplifies things a lot. [1]
- In the esp(4) SBus front-end read the part-unique ID code of Fast-SCSI
  capable chips the right way. This fixes erroneously detecting some
  chips as FAS366 when in fact they are not. Add explicit checks for the
  FAS100A, FAS216 and FAS236 variants instead treating all of these as
  ESP200. That way we can correctly set the respective Fast-SCSI config
  bits instead of driving them out of specs. This includes adding the
  FAS100A and FAS236 variants to the NCR53C9x core code. We probably
  still subsume some chip variants as ESP200 while in fact they are
  another variant which however shouldn't really matter as this will
  only happen when these chips are driven at 25MHz or less which implies
  not being able to run Fast-SCSI. [3]
- Add a workaround to the NCR53C9x interrupt handler which ignores the
  stray interrupt generated by FAS100A when doing path inquiry during
  boot and which otherwiese would trigger a panic.
- Add support for the 'esp' devices hanging off of a 'dma' or 'espdma'
  busses or which are companions of 'dma' devices to esp(4). In case of
  the variants that hang off of a DMA device this is a bit hackish as
  esp(4) then directly uses the softc of the respective parent to talk
  to the DMA engine. It might make sense to add an interface for this
  in order to implement this in a cleaner way however it's not yet clear
  how the requirements for the LANCE Ethernet controllers are and the
  hack works for now. [2]
  This effectively adds support for the onboard SCSI controller in
  Ultra 1 as well as most of the ESP-based SBus add-on cards to esp(4).
  With this the code for supporting the Performance Technologies SBS430
  SBus SCSI add-on cards is also largely in place the remaining bits
  were however omitted as it's unclear from the NetBSD how to couple
  the DMA engine and the core logic together for these cards.

Obtained from:	OpenBSD [1]
Obtained from:	NetBSD [2]
Clue from:	BSD/OS [3]
Reviewed by:	scottl (earlier version)
Tested with:	FSBE/S add-on card (FAS236), SSHA add-on card (ESP100A),
		Ultra 1 (onboard FAS100A), Ultra 2 (onboard FAS366)
2005-05-19 14:51:10 +00:00
Scott Long
20fc2576fe Apply a torniquet to the problem of the drive unexpectedly disconnecting
during a data phase.  Before, we would try to recover the autosense, but
the DMA engine would still be active with interrupted transfer, and we'd
quickly spiral out of control and cause massive data corruption.  For now,
just reset the chip and cancel everything.  The better solution is to
cancel the DMA operation, but there is no clear way to do that right now.
The data corruption problem is severe enough to warrant this fix in the
interim.  Thanks to Kris Kenneway to sacrificing countless filesystems to
this bug.

MFC After: 3 days
2005-04-25 22:11:43 +00:00
Scott Long
4bd55c43ea If we get interrupted during a data phase and the DMA engine is still
pumping data despite our scsi data counters being at 0, something has
gone massively wrong.  The consequence of happily ignoring this is more
DMA phase errors and a disk full of spammed sectors.  Instead, panic on
the first occurance to hopefully limit the damage.

MFC After: 3 days
2005-04-22 03:37:10 +00:00
Marius Strobl
e993bdf0b7 Merge some style and minor changes from NetBSD:
- ncr53c9x.c:
  1.108: Remove unreachable break after return and goto statements.
  1.109: avoid strong words; use 'screw' instead
  1.110: Fix some typos. From Tom Cosgrove via jmc@openbsd.
  1.114: nuke trailing whitespace

  1.107 was already merged, 1.112 and 1.113 are not relevant for FreeBSD.
  1.111 is a functional change and will be merged later.

- ncr53c9xreg.h:
  1.12: DMA, not dma nor Dma.
  1.13: Fix some typos. From Tom Cosgrove via jmc@openbsd.
  1.14: nuke trailing whitespace

- ncr53c9xvar.h:
  1.43: Fix some typos. From Tom Cosgrove via jmc@openbsd.
  1.44: Constify.

  1.42 and 1.46 were already merged, 1.45 is not relevant for FreeBSD.
2005-04-17 17:44:01 +00:00
Scott Long
a6b86949fc The existing locking in the esp driver appears to be fairly adequate, so
set the interrupt handler to be INTR_MPSAFE now that xpt_done() can be
called without Giant.  Giant is still on the top half of the driver and
the timeout handlers.
2005-03-02 15:56:42 +00:00
Warner Losh
098ca2bda9 Start each of the license/copyright comments with /*-, minor shuffle of lines 2005-01-06 01:43:34 +00:00
Tom Rhodes
8be373eedd Add some style(9) touch ups; style(9) states that new code should follow
these conventions and, well, this is a new driver.

Tested on:	i386, sparc64
Reviewed by:	scottl
2004-08-02 22:55:23 +00:00
Scott Long
6387afd9c5 Pass the correct argument to ncr53c9x_timeout() 2004-06-13 18:45:57 +00:00
Scott Long
1da2ceea66 Get rid of UMA zones and instead allocate all ecb's up front and track them
in a TAILQ.  Re-arrange some of the ecb elements so that they can stay
stable through alloc/free cycles while the rest get bzero'd.

- Use the tag_id from the ecb rather than fro the ccb.  The latter is only
for target mode.

- Honor the ccb flags for tag_action when deciding whether to do a tagged
or untagged transaction.

- Re-arrange autosense completion so that it works correctly in failure
cases.

- Turn on the PI_TAG_ABLE flag so that CAM will send us tagged transactions.

This enables tagged queueing in the driver.
2004-06-13 09:08:44 +00:00
Scott Long
fec4efc10b When autosense is retrieved, tell CAM about it instead of juust pretending
that the command succeeded.  Sheesh!  This makes CDROMs no longer cause an
instant panic at boot.  Thanks to Jake Burkholder for providing a remote
test setup.
Also make device resets work, thanks to another typo.
2004-06-12 05:19:17 +00:00
Scott Long
13bbbdd9c2 Make the XPT_CALC_GEOMETRY op dependent on the sc_extended_geometry flag
that is set in the bus front-end.
2004-06-11 15:33:20 +00:00
Scott Long
c31d0cf77b Port the NetBSD esp(4) driver. This only includes the sbus front-end, so
its primary use is for the FEPS/FAS366 SCSI found in Sun Ultra 1e and 2
machines.  Once the pci front-end is ported, this driver can replace the
amd(4) driver.

The code as-is is fairly stable.  I've disabled tagged-queueing until I can
figure out a corruption bug related to it.  I'm importing it now so that
people with these machines can (finally) stop netbooting and report bugs
before 5.3.
2004-06-10 05:11:39 +00:00