Commit Graph

169 Commits

Author SHA1 Message Date
Alexander Motin
2dc59e87e6 Store path for rescan to the right place. This should fix panic on boot,
introduced by r203108.
2010-02-26 12:31:16 +00:00
Alexander Motin
e28a47de96 Do not release device, when changing number of openings. 2010-02-04 08:54:14 +00:00
Alexander Motin
83c5d981ac MFp4: Large set of CAM inprovements.
- Unify bus reset/probe sequence. Whenever bus attached at boot or later,
CAM will automatically reset and scan it. It allows to remove duplicate
code from many drivers.
- Any bus, attached before CAM completed it's boot-time initialization,
will equally join to the process, delaying boot if needed.
- New kern.cam.boot_delay loader tunable should help controllers that
are still unable to register their buses in time (such as slow USB/
PCCard/ CardBus devices), by adding one more event to wait on boot.
- To allow synchronization between different CAM levels, concept of
requests priorities was extended. Priorities now split between several
"run levels". Device can be freezed at specified level, allowing higher
priority requests to pass. For example, no payload requests allowed,
until PMP driver enable port. ATA XPT negotiate transfer parameters,
periph driver configure caching and so on.
- Frozen requests are no more counted by request allocation scheduler.
It fixes deadlocks, when frozen low priority payload requests occupying
slots, required by higher levels to manage theit execution.
- Two last changes were holding proper ATA reinitialization and error
recovery implementation. Now it is done: SATA controllers and Port
Multipliers now implement automatic hot-plug and should correctly
recover from timeouts and bus resets.
- Improve SCSI error recovery for devices on buses without automatic sense
reporting, such as ATAPI or USB. For example, it allows CAM to wait, while
CD drive loads disk, instead of immediately return error status.
- Decapitalize diagnostic messages and make them more readable and sensible.
- Teach PMP driver to limit maximum speed on fan-out ports.
- Make boot wait for PMP scan completes, and make rescan more reliable.
- Fix pass driver, to return CCB to user level in case of error.
- Increase number of retries in cd driver, as device may return several UAs.
2010-01-28 08:41:30 +00:00
John Baldwin
ef36004841 Use a constant instead of a magic number for the flag that enables decoding
of a device ROM.
2009-12-30 19:42:27 +00:00
Alexander Kabaev
363b8ed74f Use callout_init_mtx on FreeBSD versions recent enough. This closes
the race where interrupt thread can complete the request for which
timeout has fired and while mpt_timeout has blocked on mpt_lock.

Do a best effort to keep 4.x ang Giant-locked configurartions
compiling still.

Reported by: ups
Reviewed by: scottl
2009-10-20 02:35:12 +00:00
Poul-Henning Kamp
6778431478 Revert previous commit and add myself to the list of people who should
know better than to commit with a cat in the area.
2009-09-08 13:19:05 +00:00
Poul-Henning Kamp
b34421bf9c Add necessary include. 2009-09-08 13:16:55 +00:00
Scott Long
52c9ce25d8 Separate the parallel scsi knowledge out of the core of the XPT, and
modularize it so that new transports can be created.

Add a transport for SATA

Add a periph+protocol layer for ATA

Add a driver for AHCI-compliant hardware.

Add a maxio field to CAM so that drivers can advertise their max
I/O capability.  Modify various drivers so that they are insulated
from the value of MAXPHYS.

The new ATA/SATA code supports AHCI-compliant hardware, and will override
the classic ATA driver if it is loaded as a module at boot time or compiled
into the kernel.  The stack now support NCQ (tagged queueing) for increased
performance on modern SATA drives.  It also supports port multipliers.

ATA drives are accessed via 'ada' device nodes.  ATAPI drives are
accessed via 'cd' device nodes.  They can all be enumerated and manipulated
via camcontrol, just like SCSI drives.  SCSI commands are not translated to
their ATA equivalents; ATA native commands are used throughout the entire
stack, including camcontrol.  See the camcontrol manpage for further
details.  Testing this code may require that you update your fstab, and
possibly modify your BIOS to enable AHCI functionality, if available.

This code is very experimental at the moment.  The userland ABI/API has
changed, so applications will need to be recompiled.  It may change
further in the near future.  The 'ada' device name may also change as
more infrastructure is completed in this project.  The goal is to
eventually put all CAM busses and devices until newbus, allowing for
interesting topology and management options.

Few functional changes will be seen with existing SCSI/SAS/FC drivers,
though the userland ABI has still changed.  In the future, transports
specific modules for SAS and FC may appear in order to better support
the topologies and capabilities of these technologies.

The modularization of CAM and the addition of the ATA/SATA modules is
meant to break CAM out of the mold of being specific to SCSI, letting it
grow to be a framework for arbitrary transports and protocols.  It also
allows drivers to be written to support discrete hardware without
jeopardizing the stability of non-related hardware.  While only an AHCI
driver is provided now, a Silicon Image driver is also in the works.
Drivers for ICH1-4, ICH5-6, PIIX, classic IDE, and any other hardware
is possible and encouraged.  Help with new transports is also encouraged.

Submitted by:	scottl, mav
Approved by:	re
2009-07-10 08:18:08 +00:00
Xin LI
c4f739ec0c Use MPT_MAX_LUNS as maximium number of LUNs, not 7, for SAS and FC cases.
This matches Linux driver behavior.

Discussed with:	scottl
Approved by:	re (kensmith)
MFC after:	1 month
2009-07-02 00:43:10 +00:00
Xin LI
1635f0499e Change explicit maximium numbers to the defined macro MPT_MAX_LUNS.
Approved by:	re (kensmith)
2009-07-02 00:41:37 +00:00
Marius Strobl
23f7f783f8 - Remove unused variables. [1]
- Remove redundant zeroing of tmf_req which Coverity Prevent(tm) complains
  about. [2]

Submitted by:	Christoph Mallon [1]
Found with:     Coverity Prevent(tm) [2]
CID:            2496 [2]
MFC after:	2 weeks
2009-06-24 20:52:59 +00:00
John Baldwin
46990862ab Largely revert the earlier change to use a single CCB for the RAID recovery
thread.  Multiple RAID events in quick succession can cause an additional
bus rescan to be scheduled before an earlier scan has completed.  In this
case the driver was attempting to use the same CCB storage for two requests.

PR:		kern/130330
Reviewed by:	Riccardo Torrini  riccardo.torrini | esaote com
MFC after:	1 week
2009-05-21 12:36:40 +00:00
Warner Losh
00b4e54ae7 We no longer need to use d_thread_t, migrate to struct thread *. 2009-05-20 17:29:21 +00:00
Marius Strobl
7ee3780799 Make the whole initiator mode part of mpt(4) endian-clean,
specifically SPI controllers now also work in big-endian
machines and some conversions relevant for FC and SAS
controllers as well as support for ILP32 machines which all
were omitted in previous attempts are now also implemented.
The IOCTL-interface is intentionally left (and where needed
actually changed) to be completely little-endian as otherwise
we would have to add conversion code for every possible
configuration page to mpt(4), which didn't seem the right
thing to do, neither did converting only half of the user-
interface to the native byte order.
This change was tested on amd64 (SAS+SPI), i386 (SAS) and
sparc64 (SAS+SPI). Due to lack of the necessary hardware
the target mode code is still left to be made endian-clean.

Reviewed by:	scottl
MFC after:	1 month
2009-01-07 21:52:47 +00:00
John Baldwin
847bd80810 Allocate a single CCB at the start of the main loop of the RAID monitoring
kthread of the mpt(4) driver that hangs around for the entire lifetime of
the thread.  Previously the driver would allocate a new CCB using M_WAITOK
with a lock held each time it updated its state.  While here, use the
CAM API for allocating a CCB rather than raw malloc(9).

Reviewed by:	scottl
MFC after:	1 week
2008-07-21 18:43:02 +00:00
John Baldwin
4124f62e4f Rework how the mpt_user personality handles buffers for config pages.
Previously we reused the space in the request buffer after the request
header to hold config pages during a transaction.  This does not work when
reading large pages however.  Also, we were already malloc'ing a buffer to
do a copyin/copyout w/o holding locks that was then copied into/out of the
request buffer.  Instead, go ahead and use bus dma to alloc a buffer for
each config page request (and RAID actions that have an associated
ActionSGE).  This results in fewer data copies and allows for larger sized
requests.  For now the maximum size of a request is arbitrarily limited to
16 MB.

MFC after:	2 weeks
2008-07-01 19:48:15 +00:00
John Baldwin
0328507287 During shutdown, deregister the shutdown hook from the correct event
handler.

MFC after:	2 weeks
2008-07-01 19:44:38 +00:00
Xin LI
18b2a6d976 Add support for LSI 1078DE (ServeRAID-AR10is SAS/SATA
Controller)

MFC after:	2 weeks
2008-05-10 01:27:23 +00:00
John Baldwin
ee98c4a50e Add a new personality to mpt(4) devices to allow userland applications to
perform various operations on a controller.  Specifically, for each mpt(4)
device, create a character device in devfs which accepts ioctl requests for
reading and writing configuration pages and performing RAID actions.

MFC after:	1 week
Reviewed by:	scottl
2008-05-06 20:49:53 +00:00
Jung-uk Kim
a41aabe249 Restore multi-release tradition of the driver.
Reviewed by:	mjacob
2008-05-02 17:02:35 +00:00
Scott Long
942adee743 Don't force a reset at driver attach time. It doesn't work on some
adapters, apparently.
2008-04-03 14:39:48 +00:00
Scott Long
e955d4fd10 The MPT driver treats the "core" module with the same importance and
abstraction as the RAID and CAM modules, making it nearly impossible
for enough initialization to be done in time for the RAID module to
know whether to attach.  On top of this, no reset was being done on
the controller on attach, in violation of the spec.  Additionally,
the port enable step was being deferred to the end of the attach
process, long after it should have been done to ensure reliable
operation from the controller.  Fix all of these with a few hacks
to force the "attach" and "enable" steps of the core module early
on, and ensure that a reset and port enable also happens early on.
In the future, the driver needs to be refactored to eliminate the
core module abstraction, clean up withe reset/enable steps, and
defer event messages until all of the modules are available to
recieve them.
2008-03-31 21:54:05 +00:00
Scott Long
fee67c1a14 Ever since the module registration system was introduced to this driver,
it's been printing out scary messages about "Unhanded Event Notify Frame"
that are needlessly worrisome to users.  Change this warning to only print
out at an elevated debugging level.
2007-11-03 17:33:41 +00:00
Julian Elischer
e1ff3d508a fix up some code for older systems changed by accident in the last commit
this whole support for systems earlier than 5.0 should probably be removed
but I'll at least FIX it before removing it, so that CVS has it right.
2007-10-21 04:11:13 +00:00
Julian Elischer
3745c395ec Rename the kthread_xxx (e.g. kthread_create()) calls
to kproc_xxx as they actually make whole processes.
Thos makes way for us to add REAL kthread_create() and friends
that actually make theads. it turns out that most of these
calls actually end up being moved back to the thread version
when it's added. but we need to make this cosmetic change first.

I'd LOVE to do this rename in 7.0  so that we can eventually MFC the
new kthread_xxx() calls.
2007-10-20 23:23:23 +00:00
Scott Long
42f31cf9d0 For some blasted reason the SATA WC change frees a structure right in the
middle of using it.
2007-10-12 16:54:51 +00:00
Kevin Lo
976b010645 Spelling fix for interupt -> interrupt 2007-10-12 06:03:46 +00:00
Doug Ambrisko
079d60f084 Fix an incorrect PCI device id. The current value conflicts with
the mfi(4) LSI MegaSAS RAID card.  Looking at the Linux driver for the
mpt(4) it should be 0x0062 and not 0x0060.  Tested with an mfi card
of this device id.

Approved by:    re (bmah)
Reviewed by:    scottl
MFC after:      3 days
2007-09-18 16:39:24 +00:00
Scott Long
9adc3a2dfb Move callout initialization to the proper spot. This prevents panics during
error recovery.

Approved by: re
Found by: kan
2007-08-14 19:17:35 +00:00
Scott Long
d38f7b62af Fix some debugging code that crept in accidentally. 2007-06-18 18:28:43 +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
a490742913 Track an update in the MPI headers that was missed earlier. 2007-06-04 06:18:07 +00:00
Scott Long
a54876ea20 Free the portinfo object on unload. 2007-06-04 04:35:04 +00:00
Scott Long
1d558d6a15 mpt.c:
mpt.h:
	Add support for reading extended configuration pages.
mpt_cam.c:
	Do a top level topology scan on the SAS controller.  If any SATA
	device are discovered in this scan, send a passthrough FIS to set
	the write cache.  This is controllable through the following
	tunable at boot:

	hw.mpt.enable_sata_wc:
		-1 = Do not configure, use the controller default
		 0 = Disable the write cache
		 1 = Enable the write cache

	The default is -1.  This tunable is just a hack and may be
	deprecated in the future.

Turning on the write cache alleviates the write performance problems with
SATA that many people have observed.  It is not recommend for those who
value data reliability!  I cannot stress this strongly enough.  However,
it is useful in certain circumstances, and it brings the performence in line
with what a generic SATA controller running under the FreeBSD ATA driver
provides (and the ATA driver has had the WC enabled by default for years).
2007-06-03 23:13:05 +00:00
Scott Long
62ae194db2 Update to MPI 1.5.16 2007-06-03 22:58:27 +00:00
Matt Jacob
d0a68c2747 Make this driver MP safe and still be a multi-release driver.
Obtained from:	99% of the work done by Scott Long.
MFC after:	3 days
2007-05-05 20:18:24 +00:00
Scott Long
8008a935a7 Revert a driver API change to xpt_alloc_ccb that isn't necessary. Fix a
couple of associated error checks.
2007-04-18 04:58:53 +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
7b88fb86e3 Hide bus reset announcements within bootverbose.
MFC after:	3 days
2007-04-07 18:15:52 +00:00
Matt Jacob
fa80feee0e feedback from RELENG_5 port 2007-03-11 01:59:44 +00:00
Matt Jacob
5f53837698 Redo previous newbus related change to be kinder to
multi-release support.
2007-02-23 23:13:46 +00:00
Paolo Pisati
ef544f6312 o break newbus api: add a new argument of type driver_filter_t to
bus_setup_intr()

o add an int return code to all fast handlers

o retire INTR_FAST/IH_FAST

For more info: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=465712+0+current/freebsd-current

Reviewed by: many
Approved by: re@
2007-02-23 12:19:07 +00:00
Matt Jacob
ffcf6651a0 Use the new xpt_rescan function to truly now have dynamic
attachment of new devices that arrive (and we notice them
via async Fibre Channel events). We've always had the
right thing (of sorts) happen when devices go away- this
is the corollary function that makes multipath failover
actually work.

MFC after:	2 weeks
2007-02-23 05:51:57 +00:00
John Baldwin
4ccac64eed Catch up to MSI-X API changes. Tested with both MSI and MSI-X. 2007-02-14 22:31:21 +00:00
Matt Jacob
325bba15cc Whoops- #ifdef problem caused uninitialized transport. Not horribly
a problem, but caused annoying messages.
2007-01-25 18:02:23 +00:00
Matt Jacob
a2baed9764 (commented out) multipath fault injection code.
Some code to make diffs with RELENG_6 easier.
2007-01-05 22:49:05 +00:00
Matt Jacob
05b2985d8e Another (minor) CAM_NEW_TRAN backport thingie, plus a slightly
closer to __FreeBSD_version comparison for this.
2007-01-05 17:51:33 +00:00
Matt Jacob
c3b65db84f Make some slight reorganization (bringing back in some
non-CAM_NEW_TRAN code) to make diffs to previous FreeBSD
versions more manageable.
2006-12-16 07:39:55 +00:00
Matt Jacob
5bac03f95c Make mpt_pci depend on pci and mpt_cam depend on CAM.
PR:		106536
Suggested by:	Norikatsu Shigemura
MFC after:	3 days
2006-12-10 01:13:56 +00:00
Matt Jacob
7185cd3625 PH! Forgot to do my cross-compile check. Also now rearranged things so
the ENDIAN defines are consistent between mpt.h and mpt.c.
2006-12-07 23:51:00 +00:00