Commit Graph

159 Commits

Author SHA1 Message Date
Konstantin Belousov
dd0b4fb6d5 Reform the busdma API so that new types may be added without modifying
every architecture's busdma_machdep.c.  It is done by unifying the
bus_dmamap_load_buffer() routines so that they may be called from MI
code.  The MD busdma is then given a chance to do any final processing
in the complete() callback.

The cam changes unify the bus_dmamap_load* handling in cam drivers.

The arm and mips implementations are updated to track virtual
addresses for sync().  Previously this was done in a type specific
way.  Now it is done in a generic way by recording the list of
virtuals in the map.

Submitted by:	jeff (sponsored by EMC/Isilon)
Reviewed by:	kan (previous version), scottl,
	mjacob (isp(4), no objections for target mode changes)
Discussed with:	     ian (arm changes)
Tested by:	marius (sparc64), mips (jmallet), isci(4) on x86 (jharris),
	amd64 (Fabian Keil <freebsd-listen@fabiankeil.de>)
2013-02-12 16:57:20 +00:00
John Baldwin
f8d6c20a0f Further adjust the workaround in r234501. Rounding all small requests up
to 32k swamped the controller causing firmware hangs.  Instead, round
requests smaller than 64k up to the next power of 2 as a general rule.
To handle the one known special case of a command that accepts a 12k
buffer returning a 24k-ish reply, round requests between 8k and 16k up
to 32k rather than 16k.  The result is that commands less than 8k should
now be rounded up to a smaller size (either 4k or 8k) rather than 32k.

PR:		kern/155658
Tested by:	Andreas Longwitz
MFC after:	1 week
2012-10-05 15:52:31 +00:00
John Baldwin
26e76e98ef As a followup to r234501, ensure that the native ioctl path always allocates
a 4kb buffer if a request uses a buffer size of 0.  (The Linux ioctl path
already did this.)

PR:		kern/155658
Submitted by:	Andreas Longwitz
MFC after:	1 week
2012-09-19 11:54:32 +00:00
Scott Long
6aedf62f32 Essentially revert r239912. The amr_periodic function hadn't been armed in
over 10 years and was dead code; the previous revision exposed it as such to
CLANG.  The solution is to cull the whole thing.
2012-08-31 09:42:46 +00:00
John Baldwin
28435fb7f6 Use callout(9) rather than timeout(9). Note that the periodic timer in
amr(4) is never started, so this should be even more of a NOP than
normal.
2012-08-30 17:37:01 +00:00
John Baldwin
ce4857d146 The amr(4) firmware contains a rather dubious "feature" where it
assumes for small buffers (< 64k) that the OS driver is actually using
a buffer rounded up to the next power of 2.  It also assumes that the
buffer is at least 4k in size.  Furthermore, there is at least one
known instance of megarc sending a request with a 12k buffer where the
firmware writes out a 24k-ish reply.

To workaround the data corruption triggered by this "feature", ensure
that buffers for user commands use a minimum size of 32k, and that
buffers between 32k and 64k use a 64k buffer.

PR:		kern/155658
Submitted by:	Andreas Longwitz  longwitz incore de
Reviewed by:	scottl
MFC after:	1 week
2012-04-20 20:27:31 +00:00
Scott Long
b6f97155cc Convert a number of drivers to obtaining their parent DMA tag from their
PCI device attachment.
2012-03-12 08:03:51 +00:00
Kevin Lo
bf78cb3887 Fix checks for error return from amr_sglist_map() and amr_ccb_map() 2012-02-28 15:09:56 +00:00
Marius Strobl
4b7ec27007 - There's no need to overwrite the default device method with the default
one. Interestingly, these are actually the default for quite some time
  (bus_generic_driver_added(9) since r52045 and bus_generic_print_child(9)
  since r52045) but even recently added device drivers do this unnecessarily.
  Discussed with: jhb, marcel
- While at it, use DEVMETHOD_END.
  Discussed with: jhb
- Also while at it, use __FBSDID.
2011-11-22 21:28:20 +00:00
Ed Schouten
d745c852be Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.
This means that their use is restricted to a single C file.
2011-11-07 06:44:47 +00:00
Robert Watson
a9d2f8d84f Second-to-last commit implementing Capsicum capabilities in the FreeBSD
kernel for FreeBSD 9.0:

Add a new capability mask argument to fget(9) and friends, allowing system
call code to declare what capabilities are required when an integer file
descriptor is converted into an in-kernel struct file *.  With options
CAPABILITIES compiled into the kernel, this enforces capability
protection; without, this change is effectively a no-op.

Some cases require special handling, such as mmap(2), which must preserve
information about the maximum rights at the time of mapping in the memory
map so that they can later be enforced in mprotect(2) -- this is done by
narrowing the rights in the existing max_protection field used for similar
purposes with file permissions.

In namei(9), we assert that the code is not reached from within capability
mode, as we're not yet ready to enforce namespace capabilities there.
This will follow in a later commit.

Update two capability names: CAP_EVENT and CAP_KEVENT become
CAP_POST_KEVENT and CAP_POLL_KEVENT to more accurately indicate what they
represent.

Approved by:	re (bz)
Submitted by:	jonathan
Sponsored by:	Google Inc
2011-08-11 12:30:23 +00:00
Matthew D Fleming
370808da5f Fix clang warning on empty statement.
Reviewed by:    rdivacky, zml
Approved by:    zml (mentor)
2010-07-28 16:24:11 +00:00
Martin Blapp
c2ede4b379 Remove extraneous semicolons, no functional changes.
Submitted by:	Marc Balmer <marc@msys.ch>
MFC after:	1 week
2010-01-07 21:01:37 +00:00
Christian Brueffer
af57883569 Remove spurious )
PR:		137758
Submitted by:	Henning Petersen <henning.petersen@t-online.de>
MFC after:	1 week
2009-10-28 15:22:58 +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
John Baldwin
a56fe095f0 Temporarily revert the new-bus locking for 8.0 release. It will be
reintroduced after HEAD is reopened for commits by re@.

Approved by:	re (kib), attilio
2009-08-20 19:17:53 +00:00
Attilio Rao
444b91868b Make the newbus subsystem Giant free by adding the new newbus sxlock.
The newbus lock is responsible for protecting newbus internIal structures,
device states and devclass flags. It is necessary to hold it when all
such datas are accessed. For the other operations, softc locking should
ensure enough protection to avoid races.

Newbus lock is automatically held when virtual operations on the device
and bus are invoked when loading the driver or when the suspend/resume
take place. For other 'spourious' operations trying to access/modify
the newbus topology, newbus lock needs to be automatically acquired and
dropped.

For the moment Giant is also acquired in some key point (modules subsystem)
in order to avoid problems before the 8.0 release as module handlers could
make assumptions about it. This Giant locking should go just after
the release happens.

Please keep in mind that the public interface can be expanded in order
to provide more support, if there are really necessities at some point
and also some bugs could arise as long as the patch needs a bit of
further testing.

Bump __FreeBSD_version in order to reflect the newbus lock introduction.

Reviewed by:    ed, hps, jhb, imp, mav, scottl
No answer by:   ariff, thompsa, yongari
Tested by:      pho,
                G. Trematerra <giovanni dot trematerra at gmail dot com>,
                Brandon Gooch <jamesbrandongooch at gmail dot com>
Sponsored by:   Yahoo! Incorporated
Approved by:	re (ksmith)
2009-08-02 14:28:40 +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
Scott Long
64c71632bf Move the CAM passthrough code into a true module so that it doesn't have to be
compiled into the main AMR driver.  It's code that is nice to have but not
required for normal operation, and it is reported to cause problems for some
people.
2008-11-03 00:53:54 +00:00
Ed Schouten
6bfa9a2d66 Replace all calls to minor() with dev2unit().
After I removed all the unit2minor()/minor2unit() calls from the kernel
yesterday, I realised calling minor() everywhere is quite confusing.
Character devices now only have the ability to store a unit number, not
a minor number. Remove the confusion by using dev2unit() everywhere.

This commit could also be considered as a bug fix. A lot of drivers call
minor(), while they should actually be calling dev2unit(). In -CURRENT
this isn't a problem, but it turns out we never had any problem reports
related to that issue in the past. I suspect not many people connect
more than 256 pieces of the same hardware.

Reviewed by:	kib
2008-09-27 08:51:18 +00:00
Scott Long
92130a8f2e While spin-waiting for the mailbox semaphore to update, do flushing reads of
PCI bus so that we don't have to wait more than needed.
2008-07-20 16:50:14 +00:00
Scott Long
1a6b516979 Remove an errant definition for AMR_CONFIG_ENQ3_SOLICITED NOTIFY that was
accidently reverted in the previous commit.
2008-02-06 14:26:31 +00:00
Scott Long
74018414bf Many improvements that have been collected over time:
- Improve error handling for load operations.
- Fix a memory corruption bug when using certain linux management apps.
- Allocate all commands up front to avoid OOM deadlocks later on.
2008-01-24 07:26:53 +00:00
Scott Long
281017a577 Rewrite the DMA code paths from being an impenitrable maze of special cases
to a much saner and simplier unified code path.  Along the way, fix various
CAM nits and bugs so that the passthrough works correctly for all cases.
2007-12-12 05:55:03 +00:00
Scott Long
cdc03cc897 Provide unqiue malloc types instead of using M_DEVBUF. 2007-12-02 19:54:45 +00:00
Scott Long
f4b5c2581d Refactor completion handlers so that they can be combined into a single
function.  Add missing locking.
2007-12-02 19:50:01 +00:00
Scott Long
4059f1cc7d Make a pass at style.9 compliance 2007-12-02 18:48:17 +00:00
Scott Long
4c92c3889c Fix a typo that was hidden by AMR_DEBUG. 2007-12-02 18:47:31 +00:00
Scott Long
3002614d91 Fix printf format bugs that where hidden by AMR_DEBUG. 2007-12-02 18:45:37 +00:00
Scott Long
0a5c91d058 Turn the CAM passthroug interface to AMR back ON. Adjust the
T_DIRECT filtering so that disk drives can be attached via the
pass driver.  Add CAM locking.  Don't mark CAM commands as SG64
since the hardware isn't designed to deal with 64-bit passthru
commands.  Hopefully the bounce buffer changes that were done
for the management/ioctl interface are robust enough to handle
this deficiency for CAM as well.
2007-11-28 19:40:17 +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
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
b3d93fd0c9 Add MODULE_DEPENDS for cam, pci, mca, eisa and isa where needed.
PR:		106543
MFC after:	3 days
2006-12-11 18:28:31 +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
Pawel Jakub Dawidek
9cd394ea96 Implement BIO_FLUSH handling for da(4), amr(4), ata(4) and ataraid(4).
Sponsored by:	home.pl
2006-10-31 21:19:25 +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
John Baldwin
44daafbccc Chain the bus_dmamap_load() calls when mapping a command with a data CCB
instead of doing the first load with the BUS_DMA_NOWAIT flag.  On 4.x with
PAE and > 4gb of RAM this proved disastrous if there weren't enough bounce
pages as amr_mapcmd() would return failure but the callback would later
fire once enough bounce pages were available and would then overwrite
another command's S/G list.

MFC after:	3 days
Submitted by:	scottl (4.x version)
Reviewed by:	scottl (port from 4.x to HEAD)
2006-07-17 19:45:47 +00:00
Doug Ambrisko
d279e43442 Make amr_linux work as a module by avoiding calling amr_linux_ioctl_int
from the amr_linux.  This simplifies the amr_linux shim and puts the
smarts into amr.c.

I tested this with 2 amr controllers in one box.  It seems to work
okay with them.
2006-05-03 16:45:15 +00:00
Doug Ambrisko
bc971e44ed Reduce the Linux ioctl range to what is needed. I didn't know what
I was doing when I first set the range up.
2006-04-14 16:13:28 +00:00
Scott Long
dce223cfb6 After further review and discussion, partially revert the previous commit.
The real problem was that ioctl handlers needed to call amr_wait_command()
with the list lock held.  This not only solves the completion race, it also
prevents bounce buffer corruption that could arise from amr_start() being
called without the proper locks held.

Discussed with: ps
MFC After: 3 days
2006-04-08 05:08:17 +00:00
Paul Saab
026d2aa333 Close a pesky race where after checking the BUSY flag in amr_wait_command,
the completion of the command can occur before tsleep is called and
the command ends up blocking forever since the wakeup has already
been called.

Submitted by:   ups
2006-04-08 02:23:27 +00:00
John Baldwin
44a4a80962 Check the return value of copyin() and return an error if it fails.
Coverity ID:	839
Found by:	Coverity Prevent
MFC after:	1 week
Reviewed by:	ps, scottl
2006-02-23 18:05:38 +00:00
Warner Losh
2805b31bdf Use void * for pointer rather than u_int8_t *, since it doesn't
matter.  Well it does for type punning warnings.
2006-02-04 22:14:20 +00:00
Paul Saab
0e74562fbc Enable 64bit SGL's on PERC 4/DC 2006-02-02 17:51:47 +00:00
Paul Saab
447c943f68 - Move the command setup from amr_start1 into the card specific submit
routines.
- Add or replace cpu_spinwait() with DELAY(1) to a few of the busy
  loops when reading from the controller to work around firmware bugs
  which can crash the controller.
2006-02-02 17:50:59 +00:00
Doug Ambrisko
4302d37921 When the RAID firmware returns a failure, don't hard error the result.
This is important with MegaLib, when issuing a GET_REBUILD_PROG since
it returns an error if the drive is not in rebuild state.

This will be MFC'ed shortly.

Submitted by:	ps
Reviewed by:	scottl
Found by:	ambrisko
2006-01-26 22:39:12 +00:00
Doug Ambrisko
084500bc13 Add in the Linux IOCTL shim and create the megadev0 device so
Linux LSI MegaRaid tools can run on FreeBSD until Linux emulation.

Add in the Linux IOCTL shim and create the megadev0 device so
Linux LSI MegaRaid tools can run on FreeBSD until Linux emulation.

Add glue to build the modules but don't tie it into the build
yet until I test it from the CVS repo. via the mirror on an
amd64 machine.

Tie this into the Linux32 emulation on amd64 so the tools can
run on amd64 kernel.

Cleaned up by:	ps (amr_linux.c)
2006-01-24 21:13:50 +00:00
Scott Long
a4d3c74487 Check the return value of copyin.
Found by: Coverity Prevent (tm)
2006-01-14 17:59:28 +00:00