Commit Graph

18 Commits

Author SHA1 Message Date
Matt Jacob
0e0521a153 MFP4: principally to reapply tagged command support to FC and SAS cards. 2006-12-07 22:02:28 +00:00
Matt Jacob
b4c618c099 Fix config page writes to not strip out the attributes when you
actually go write the config page. This fixes the long standing
problem about updating NVRAM on Fibre Channel cards and seems
so far to not break SPI config page writes.

Put back role setting into mpt. That is, you can set a desired role
for mpt as a hint. On the next reboot, it'll pick that up and redo
the NVRAM settings appropriately and warn you that this won't take
effect until the next reboot. This saves people the step of having
to find a BIOS utilities disk to set target and/or initiator role
for the MPT cards.
2006-07-12 07:48:50 +00:00
Matt Jacob
ec5fe39d39 Add acknowledgements to LSI-Logic for support 2006-05-29 20:34:28 +00:00
Matt Jacob
a3116b5a27 Get most of the way back to having Integrated Mirroring work
again- the addition of target mode support broke it massively.
2006-05-26 05:54:21 +00:00
Matt Jacob
5e073106d5 Fix some of the previus changes 'better'.
There's something strange going on with async events. They seem
to be be treated differently for different Fusion implementations.
Some will really tell you when it's okay to free the request that
started them.  Some won't. Very disconcerting.

This is particularily bad when the chip (FC in this case) tells you
in the reply that it's not a continuation reply, which means you
can free the request that its associated with. However, if you do
that, I've found that additional async event replies come back for
that message context after you freed it. Very Bad Things Happen.

Put in a reply register debounce. Warn about out of range context
indices. Use more MPILIB defines where possible. Replace bzero with
memset. Add tons more KASSERTS. Do a *lot* more request free list
auditting and serial number usages. Get rid of the warning about
the short IOC Facts Reply.  Go back to 16 bits of context index.

Do a lot more target state auditting as well. Make a tag out
of not only the ioindex but the request index as well and worry
less about keeping a full serial number.
2006-04-01 07:12:18 +00:00
Matt Jacob
c87e3f833c Some fairly major changes to this driver.
A) Fibre Channel Target Mode support mostly works
(SAS/SPI won't be too far behind). I'd say that
this probably works just about as well as isp(4)
does right now. Still, it and isp(4) and the whole
target mode stack need a bit of tightening.

B) The startup sequence has been changed so that
after all attaches are done, a set of enable functions
are called. The idea here is that the attaches do
whatever needs to be done *prior* to a port being
enabled and the enables do what need to be done for
enabling stuff for a port after it's been enabled.

This means that we also have events handled by their
proper handlers as we start up.

C) Conditional code that means that this driver goes
back all the way to RELENG_4 in terms of support.

D) Quite a lot of little nitty bug fixes- some discovered
by doing RELENG_4 support. We've been living under Giant
*waaaayyyyy* too long and it's made some of us (me) sloppy.

E) Some shutdown hook stuff that makes sure we don't blow
up during a reboot (like by the arrival of a new command
from an initiator).

There's been some testing and LINT checking, but not as
complete as would be liked. Regression testing with Fusion
RAID instances has not been possible. Caveat Emptor.

Sponsored by: LSI-Logic.
2006-03-25 07:08:27 +00:00
Matt Jacob
6a9fa0152c Remove the ill-considered effect of using the type definitions as
distributed by LSI-Logic. For FreeBSD, just use the posix defines
instead of trying to figure out how wide an int is. Apologies to all.
2006-02-26 22:50:14 +00:00
Matt Jacob
0b80d21bdf Role a microrev of the MPI Library in preparation for target mode work.
Make my portions of the license clearer.

Thank Chris Ellsworth for his support in getting a bunch of this done.
2006-02-25 07:45:54 +00:00
Matt Jacob
444dd2b669 Do initial cut of SAS HBA support. These controllers (106X) seem to support
automatically both SATA and SAS drives.  The async SAS event handling we catch
but ignore at present (so automagic attach/detach isn't hooked up yet).

Do 64 bit PCI support- we can now work on systems with > 4GB of memory.

Do large transfer support- we now can support up to reported chain depth, or
the length of our request area. We simply allocate additional request elements
when we would run out of room for chain lists.

Tested on Ultra320, FC and SAS controllers on AMD64 and i386 platforms.
There were no RAID cards available for me to regression test.

The error recovery for this driver still is pretty bad.
2006-02-11 01:35:29 +00:00
Matt Jacob
9de3c85c24 Rev MPI spec to 1.05.09 level in preparation for SAS support.
MFC after:	1 month
2006-01-21 00:29:52 +00:00
Scott Long
b0a2fdee0d Massive overhaul of MPT Fusion driver:
o Add timeout error recovery (from a thread context to avoid
  the deferral of other critical interrupts).
o Properly recover commands across controller reset events.
o Update the driver to handle events and status codes that
  have been added to the MPI spec since the driver was
  originally written.
o Make the driver more modular to improve maintainability and
  support dynamic "personality" registration (e.g. SCSI Initiator,
  RAID, SAS, FC, etc).
o Shorten and simplify the common I/O path to improve driver
  performance.
o Add RAID volume and RAID member state/settings reporting.
o Add periodic volume resynchronization status reporting.
o Add support for sysctl tunable resync rate, member write cache
  enable, and volume transaction queue depth.

Sponsored by
----------------
Avid Technologies Inc:
	SCSI error recovery, driver re-organization, update of MPI library
	headers, portions of dynamic personality registration, and misc bug
	fixes.

Wheel Open Technologies:
	RAID event notification, RAID member pass-thru support, firmware
	upload/download support, enhanced RAID resync speed, portions
	of dynamic personality registration, and misc bug fixes.

Detailed Changes
================
mpt.c mpt_cam.c mpt_raid.c mpt_pci.c:
o Add support for personality modules.  Each module exports
  load, and unload module scope methods as well as probe, attach,
  event, reset, shutdown, and detach  per-device instance
  methods

mpt.c mpt.h mpt_pci.c:
o The driver now associates a callback function (via an
  index) with every transaction submitted to the controller.
  This allows the main interrupt handler to absolve itself
  of any knowledge of individual transaction/response types
  by simply calling the callback function "registered" for
  the transaction.  We use a callback index instead of a
  callback function pointer in each requests so we can
  properly handle responses (e.g. event notifications)
  that are not associated with a transaction.  Personality
  modules dynamically register their callbacks with the
  driver core to receive the callback index to use for their
  handlers.

o Move the interrupt handler into mpt.c.  The ISR algorithm
  is bus transport and OS independent and thus had no reason
  to be in mpt_pci.c.

o Simplify configuration message reply handling by copying
  reply frame data for the requester and storing completion
  status in the original request structure.

o Add the mpt_complete_request_chain() helper method and use
  it to implement reset handlers that must abort transactions.

o Keep track of all pending requests on the new
  requests_pending_list in the softc.

o Add default handlers to mpt.c to handle generic event
  notifications and controller reset activities.  The event
  handler code is largely the same as in the original driver.
  The reset handler is new and terminates any pending transactions
  with a status code indicating the controller needs to be
  re-initialized.

o Add some endian support to the driver.  A complete audit is
  still required for this driver to have any hope of operating
  in a big-endian environment.

o Use inttypes.h and __inline.  Come closer to being style(9)
  compliant.

o Remove extraneous use of typedefs.

o Convert request state from a strict enumeration to a series
  of flags.  This allows us to, for example, tag transactions
  that have timed-out while retaining the state that the
  transaction is still in-flight on the controller.

o Add mpt_wait_req() which allows a caller to poll or sleep
  for the completion of a request.  Use this to simplify
  and factor code out from many initialization routines.
  We also use this to sleep for task management request
  completions in our CAM timeout handler.

mpt.c:
o Correct a bug in the event handler where request structures were
  freed even if the request reply was marked as a continuation
  reply. Continuation replies indicate that the controller still owns
  the request and freeing these replies prematurely corrupted
  controller state.

o Implement firmware upload and download. On controllers that do
  not have dedicated NVRAM (as in the Sun v20/v40z), the firmware
  image is downloaded to the controller by the system BIOS. This
  image occupies precious controller RAM space until the host driver
  fetches the image, reducing the number of concurrent I/Os the
  controller can processes. The uploaded image is used to
  re-program the controller during hard reset events since the
  controller cannot fetch the firmware on its own. Implementing this
  feature allows much higher queue depths when RAID volumes
  are configured.

o Changed configuration page accessors to allow threads to sleep
  rather than busy wait for completion.

o Removed hard coded data transfer sizes from configuration page
  routines so that RAID configuration page processing is possible.

mpt_reg.h:
o Move controller register definitions into a separate file.

mpt.h:
o Re-arrange includes to allow inlined functions to be
  defined in mpt.h.

o Add reply, event, and reset handler definitions.

o Add softc fields for handling timeout and controller
  reset recovery.

mpt_cam.c:
o Move mpt_freebsd.c to mpt_cam.c.  Move all core functionality,
  such as event handling, into mpt.c leaving only CAM SCSI
  support here.

o Revamp completion handler to provide correct CAM status for
  all currently defined SCSI MPI message result codes.

o Register event and reset handlers with the MPT core.  Modify
  the event handler to notify CAM of bus reset events.  The
  controller reset handler will abort any transactions that
  have timed out.  All other pending CAM transactions are
  correctly aborted by the core driver's reset handler.

o Allocate a single request up front to perform task management
  operations.  This guarantees that we can always perform a
  TMF operation even when the controller is saturated with other
  operations.  The single request also serves as a perfect
  mechanism of guaranteeing that only a single TMF is in flight
  at a time - something that is required according to the MPT
  Fusion documentation.

o Add a helper function for issuing task management requests
  to the controller.  This is used to abort individual requests
  or perform a bus reset.

o Modify the CAM XPT_BUS_RESET ccb handler to wait for and
  properly handle the status of the bus reset task management
  frame used to reset the bus.  The previous code assumed that
  the reset request would always succeed.

o Add timeout recovery support.  When a timeout occurs, the
  timed-out request is added to a queue to be processed by
  our recovery thread and the thread is woken up.  The recovery
  thread processes timed-out command serially, attempting first
  to abort them and then falling back to a bus reset if an
  abort fails.

o Add calls to mpt_reset() to reset the controller if any
  handshake command, bus reset attempt or abort attempt
  fails due to a timeout.

o Export a secondary "bus" to CAM that exposes all volume drive
  members as pass-thru devices, allowing CAM to perform proper
  speed negotiation to hidden devices.

o Add a CAM async event handler tracking the AC_FOUND_DEVICE event.
  Use this to trigger calls to set the per-volume queue depth once
  the volume is fully registered with CAM. This is required to avoid
  hitting firmware limits on volume queue depth.  Exceeding the
  limit causes the firmware to hang.

mpt_cam.h:
o Add several helper functions for interfacing to CAM and
  performing timeout recovery.

mpt_pci.c:
o Disable interrupts on the controller before registering and
  enabling interrupt delivery to the OS.  Otherwise we risk
  receiving interrupts before the driver is ready to receive
  them.

o Make use of compatibility macros that allow the driver to
  be compiled under 4.x and 5.x.

mpt_raid.c:
o Add a per-controller instance RAID thread to perform settings
   changes and query status (minimizes CPU busy wait loops).

o Use a shutdown handler to disable "Member Write Cache Enable"
  (MWCE) setting for RAID arrays set to enable MWCE During Rebuild.

o Change reply handler function signature to allow handlers to defer
  the deletion of reply frames. Use this to allow the event reply
  handler to queue up events that need to be acked if no resources
  are available to immediately ack an event. Queued events are
  processed in mpt_free_request() where resources are freed. This
  avoids a panic on resource shortage.

o Parse and print out RAID controller capabilities during driver probe.

o Define, allocate, and maintain RAID data structures for volumes,
  hidden member physical disks and spare disks.

o Add dynamic sysctls for per-instance setting of the log level, array
  resync rate, array member cache enable, and volume queue depth.

mpt_debug.c:
o Add mpt_lprt and mpt_lprtc for printing diagnostics conditioned on
  a particular log level to aid in tracking down driver issues.

o Add mpt_decode_value() which parses the bits in an integer
  value based on a parsing table (mask, value, name string, tuples).

mpilib/*:
o Update mpi library header files to latest distribution from LSI.

Submitted by: gibbs
Approved by: re
2005-07-10 15:05:39 +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
David E. O'Brien
9295c6c555 Fix where my automated script blew the SCM ID format conversion. 2004-08-21 17:44:57 +00:00
Stefan Farfeleder
439dfb0c35 Remove erroneous semicolons. 2004-07-13 16:06:19 +00:00
David E. O'Brien
aad970f1fe Use __FBSDID().
Also some minor style cleanups.
2003-08-24 17:55:58 +00:00
Matt Jacob
301472c20b Code cleanup: use mpt_prt instead of device_printf. 2002-09-24 21:33:43 +00:00
Matt Jacob
7104aeef01 A chunk of cleanup, both stylistic and substantive.
We now also read configuration information for the SCSI cards- this allows
us to try and say what the speed settings now are.

Start, but not yet complete, the process of reorgs && #defines so that we
can backport to RELENG_4 pretty soon.
2002-08-20 23:04:08 +00:00
Matt Jacob
9b63136347 Add support for the LSI-Logic Fusion/MP architecture.
This is an architecture that present a thing message passing interface
to the OS. You can query as to how many ports and what kind are attached
and enable them and so on.

A less grand view is that this is just another way to package SCSI (SPI or
FC) and FC-IP into a one-driver interface set.

This driver support the following hardware:

LSI FC909:	Single channel, 1Gbps, Fibre Channel (FC-SCSI only)
LSI FC929:	Dual Channel, 1-2Gbps, Fibre Channel (FC-SCSI only)
LSI 53c1020:	Single Channel, Ultra4 (320M) (Untested)
LSI 53c1030:	Dual Channel, Ultra4 (320M)

Currently it's in fair shape, but expect a lot of changes over the
next few weeks as it stabilizes.

Credits:

The driver is mostly from some folks from Jeff Roberson's company- I've
been slowly migrating it to broader support that I it came to me as.

The hardware used in developing support came from:

	FC909: LSI-Logic, Advansys (now Connetix)
	FC929: LSI-Logic
	53c1030: Antares Microsystems (they make a very fine board!)

MFC after:	3 weeks
2002-08-11 23:34:20 +00:00