Commit Graph

112589 Commits

Author SHA1 Message Date
Navdeep Parhar
c149da1661 cxgbe/cxgbei: There is no need for multiple modules in the KLD.
Sponsored by:	Chelsio Communications
2016-08-26 01:28:31 +00:00
Navdeep Parhar
a95e0bfb6c cxgbe/cxgbei: Convert the driver-private PDU flags to enums and replace
pdu_ prefix with icp_ in struct icl_cxgbei_pdu.

Sponsored by:	Chelsio Communications
2016-08-25 23:06:12 +00:00
Navdeep Parhar
5d83392ac5 cxgbe/cxgbei: Read the chip's configuration to determine the actual
hardware send and receive PDU limits.  Report these limits to ICL and
take them into account when setting the socket's send and receive buffer
sizes.  The driver used a single hardcoded limit everywhere prior to
this change.

Sponsored by:	Chelsio Communications
2016-08-25 21:55:17 +00:00
Konstantin Belousov
0f2d97838d In both do_rw_wrlock() and do_rw_rdlock() after r304808, do not
obliterate possible error from sleep with errors from
umtxq_check_susp(), when looping to clear URWLOCK_{READ,WRITE}_WAITERS.

Noted and reviewed by:	vangyzen
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2016-08-25 19:15:02 +00:00
Konstantin Belousov
28e21133f3 Prevent leak of URWLOCK_READ_WAITERS flag for urwlocks.
If there was some error, e.g. the sleep was interrupted, as in the
referenced PR, do_rw_rdlock() did not cleared URWLOCK_READ_WAITERS.
Since unlock only wakes up write waiters when there is no read
waiters, for URWLOCK_PREFER_READER kind of locks, the result was
missed wakeups for writers.

In particular, the most visible victims are ld-elf.so locks in
processes which loaded libthr, because rtld locks are urwlocks in
prefer-reader mode.  Normal rwlocks fall into prefer-reader mode only
if thread already owns rw lock in read mode, which is not typical and
correspondingly less visible.  In the PR, unowned rtld bind lock was
waited for in the process where only one thread was left alive.

Note that do_rw_wrlock() correctly clears URWLOCK_WRITE_WAITERS in
case of errors.

Reported and tested by:	longwitz@incore.de
PR:	211947
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
2016-08-25 16:35:42 +00:00
Andrew Turner
d92a1b6ab3 Fix an assert, it should check if, when moving from 1 l1 to 512 l2 blocks,
the l2 entry is a block type and not an l3 page.

While here fix the string to correct the level name and add a missing ')'.

Obtained from:	ABT Systems Ltd
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2016-08-25 14:42:29 +00:00
Jared McNeill
1567e084b3 Add support for Allwinner A64.
Reviewed by:	andrew, manu
Relnotes:	yes
2016-08-25 13:59:19 +00:00
Bruce Evans
d350ce61cf Less-quick fix for locking fixes in r172250. r172250 added a second
syscons spinlock for the output routine alone.  It is better to extend
the coverage of the first syscons spinlock added in r162285.  2 locks
might work with complicated juggling, but no juggling was done.  What
the 2 locks actually did was to cover some of the missing locking in
each other and deadlock less often against each other than a single
lock with larger coverage would against itself.  Races are preferable
to deadlocks here, but 2 locks are still worse since they are harder
to understand and fix.

Prefer deadlocks to races and merge the second lock into the first one.

Extend the scope of the spinlocking to all of sc_cnputc() instead of
just the sc_puts() part.  This further prefers deadlocks to races.

Extend the kdb_active hack from sc_puts() internals for the second lock
to all spinlocking.  This reduces deadlocks much more than the other
changes increases them.  The s/p,10* test in ddb gets much further now.
Hide this detail in the SC_VIDEO_LOCK() macro.  Add namespace pollution
in 1 nested #include and reduce namespace pollution in other nested
#includes to pay for this.

Move the first lock higher in the witness order.  The second lock was
unnaturally low and the first lock was unnaturally high.  The second
lock had to be above "sleepq chain" and/or "callout" to avoid spurious
LORs for visual bells in sc_puts().  Other console driver locks are
already even higher (but not adjacent like they should be) except when
they are missing from the table.  Audio bells also benefit from the
syscons lock being high so that audio mutexes have chance of being
lower.  Otherwise, console drviver locks should be as low as possible.
Non-spurious LORs now occur if the bell code calls printf() or is
interrupted (perhaps by an NMI) and the interrupt handler calls
printf().  Previous commits turned off many bells in console i/o but
missed ones done by the teken layer.
2016-08-25 13:46:52 +00:00
Lawrence Stewart
4b7b743c16 Pass the number of segments coalesced by LRO up the stack by repurposing the
tso_segsz pkthdr field during RX processing, and use the information in TCP for
more correct accounting and as a congestion control input. This is only a start,
and an audit of other uses for the data is left as future work.

Reviewed by:	gallatin, rrs
Sponsored by:	Netflix, Inc.
Differential Revision:	https://reviews.freebsd.org/D7564
2016-08-25 13:33:32 +00:00
Andrew Turner
ef63b26a5f Don't set *dev in the zfs root case, it may be NULL and will correctly be
set later in the function. This fixes a potential NULL pointer dereference
found on arm64.

Obtained from:	ABT Systems Ltd
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
2016-08-25 12:42:41 +00:00
Bruce Evans
9f25943b82 Fix logic errors in bounds checks in previous commit. The 2-entry stack
was overrun for grab levels larger than 2.

Reported by:	pluknet
2016-08-25 12:04:57 +00:00
Andrew Turner
d5911afb79 Map coherent memory in a non-coherent dma tag as uncached. This is similar
to what the 32-bit arm code does, with the exception that it always assumes
the tag is non-coherent.

Tested by:	jmcneill
Obtained from:	ABT Systems Ltd
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
2016-08-25 10:53:03 +00:00
Jared McNeill
7f4b51c6f0 Add support for Allwinner A64 PLL_PERIPH0/PLL_PERIPH1 and PLL_HSIC clocks.
Reviewed by:	andrew, manu
2016-08-25 10:29:41 +00:00
Jared McNeill
30a0ebdb1c Switch parent clock when setting frequency if a new parent is a better
candidate for the target rate.

Reviewed by:	andrew, manu
2016-08-25 10:27:22 +00:00
Jared McNeill
1ff131af88 Add support for Allwinner multi-parent bus gates.
Reviewed by:	andrew, manu
2016-08-25 10:24:14 +00:00
Jared McNeill
224a4b630b Expose DC1SW as a regulator switch. On Pine64 this is used to control EMAC
PHY power.

Reviewed by:	andrew, manu
2016-08-25 10:20:27 +00:00
Jared McNeill
ef61a34ae8 Remove dependency on allwinner_soc_family() as it is not available on arm64.
Reviewed by:	andrew, manu
2016-08-25 10:14:56 +00:00
Sepherosa Ziehau
9db7c2c6b5 hyperv/storvsc: Increase queue depth and rework channel selection.
- Increasing queue depth gives ~100% performance improvement for
  randwrite fio test in Azure.
- New channel selection, which takes LUN id and the current cpuid
  into consideration, gives additional ~20% performance improvement
  for ranwrite fio test in Azure.

Submitted by:   Hongzhang Jiang <honzhan microsoft com>
Modified by:    sephe
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7622
2016-08-25 05:50:19 +00:00
Sepherosa Ziehau
dd9af4103b hyperv/vmbus: Add function to calculate max # of elements in a bufring.
MFC after:	1 week
Sponsored by:	Microsoft
2016-08-25 05:35:51 +00:00
Navdeep Parhar
1c828193df Bump __FreeBSD_version for r304787 and add a note about it to UPDATING. 2016-08-25 05:28:02 +00:00
Sepherosa Ziehau
c72fc9d2b9 hyperv/ic: Update total message size if negotiate message size grows.
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7627
2016-08-25 05:24:57 +00:00
Navdeep Parhar
97b84d344d Make the iSCSI parameter negotiation more flexible.
Decouple the send and receive limits on the amount of data in a single
iSCSI PDU.  MaxRecvDataSegmentLength is declarative, not negotiated, and
is direction-specific so there is no reason for both ends to limit
themselves to the same min(initiator, target) value in both directions.

Allow iSCSI drivers to report their send, receive, first burst, and max
burst limits explicitly instead of using hardcoded values or trying to
derive all of them from the receive limit (which was the only limit
reported by the drivers prior to this change).

Display the send and receive limits separately in the userspace iSCSI
utilities.

Reviewed by:	jpaetzel@ (earlier version), trasz@
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D7279
2016-08-25 05:22:53 +00:00
Sepherosa Ziehau
02d9926559 hyperv/ic: Cleanup heartbeat channel callback.
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7626
2016-08-25 05:11:04 +00:00
Sepherosa Ziehau
550bbdbd27 hyperv/hn: Use vmbus xact for RNDIS initialize.
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7624
2016-08-25 05:00:41 +00:00
Sepherosa Ziehau
fec38279d8 hyperv/hn: Add compat code for RNDIS reorganization phase.
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7621
2016-08-25 04:52:50 +00:00
Sepherosa Ziehau
6cc86f82b7 hyperv/hn: Use definition in net/rndis.h for message type and status code.
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7620
2016-08-25 04:40:51 +00:00
Bruce Evans
e866ca565f Flesh out the state and flags args to sccnopen(). Set state flags to
indicate (potentially partial) success of the open.  Use these to
decide what to close in sccnclose().  Only grab/ungrab use open/close
so far.

Add a per-sc variable to count successful keyboard opens and use
this instead of the grab count to decide if the keyboad state has
been switched.

Start fixing the locking by using atomic ops for the most important
counter -- the grab level one.  Other racy counting will eventually
be fixed by normal mutex or kdb locking in most cases.

Use a 2-entry per-sc stack of states for grabbing.  2 is just enough
to debug grabbing, e.g., for gets().  gets() grabs once and might not
be able to do a full (or any) state switch.  ddb grabs again and has
a better chance of doing a full state switch and needs a place to
stack the previous state.  For more than 3 levels, grabbing just
changes the count.  Console drivers should try to switch on every i/o
in case lower levels of nesting failed to switch but the current level
succeeds, but then the switch (back) must be completed on every i/o
and this flaps the state unless the switch is null.  The main point
of grabbing is to make it null quite often.  Syscons grabbing also
does a carefully chosen screen focus that is not done on every i/o.

Add a large comment about grabbing.

Restore some small lost comments.
2016-08-24 18:59:24 +00:00
Bruce Evans
2078bf6ef0 Reorganise a little to prepare for locking fixes:
- in sccnopen(), open the keyboard before the screen.  The keyboard
  currently requires Giant (although it must be spinlocked to work
  correctly as a console), so the previous order would be a LOR if
  it has any semblance of locking.
- add a (currently dummy) state arg to scgetc().
2016-08-24 17:26:11 +00:00
Nathan Whitehorn
e21d69e9a7 Close a race when making the CPU idle under pHyp. If an interrupt occurs
between the beginning of the idle function and actually going idle, the
CPU could go to sleep with pending work.

MFC after:	1 month
2016-08-24 16:49:14 +00:00
Toomas Soome
792ee5d5f2 Bug 212038 - svn commit: r304321 broken bhyve zvol VM bhyveload hang 100% WCPU
As the support for large blocks was enabled in loader zfs code, the
heap in userboot was left not changed, resulting with failure of detecting
and accessing zfs pools for bhyve virtual machines.

This fix does set the heap to use same amount of memory as the zfsloader
is using. To make it possible to test and verify loader functions, bhyve
is providing very useful option, but it also means, we like to keep feature
parity with [zfs]loader as close as possible.

PR:		212038
Reported by:	dfh0522@gmail.com
Reviewed by:	allanjude, grehan
Approved by:	allanjude (mentor)
Differential Revision:	https://reviews.freebsd.org/D7635
2016-08-24 16:40:29 +00:00
Toomas Soome
f1624ed8c4 Bug 212114 - loader: zio_checksum_verify() must test spa for NULL pointer
The issue was introduced with adding support for salted checksums, and
was revealed by bhyve userboot.so.

During pool discovery the loader is reading pool label from disks, and
at that time the spa structure is not yet set up, so the NULL pointer
is passed for spa. This condition must be checked to avoid the corruption
of the memory and NULL pointer dereference.

PR:		212114
Reported by:	tsoome@freebsd.com
Reviewed by:	allanjude
Approved by:	allanjude (mentor)
Differential Revision:	https://reviews.freebsd.org/D7634
2016-08-24 16:30:15 +00:00
Andrey A. Chernov
6a58af48d3 Bump __FreeBSD_version for LC_*_MASK fix for newlocale(3) and querylocale(3) 2016-08-24 15:36:48 +00:00
Andrew Turner
aa9872243a Allow superpages on arm64 to be enabled. It is disabled for now to allow
for more testing across more hardware.

Obtained from:	ABT Systems Ltd
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2016-08-24 13:00:50 +00:00
Andrew Turner
262432bbb1 Add support to promote and demote managed superpages. This is the last part
needed before enabling superpages on arm64. This code is based on the amd64
pmap with changes as needed to handle the differences between the two
architectures.

Obtained from:	ABT Systems Ltd
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2016-08-24 12:57:40 +00:00
Andrew Turner
3969d2f921 Teach the parts of the arm64 pmap that need to iterate over pages to also
iterate over superpages. We don't yet create these, but soon will.

Obtained from:	ABT Systems Ltd
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
2016-08-24 12:32:18 +00:00
Ed Schouten
e4df2955d3 Add a Makefile for building the cloudabi32 kernel module.
Where the cloudabi64 kernel can be used to execute 64-bit CloudABI
binaries, this one should be used for 32-bit binaries. Right now it
works on i386 and amd64.
2016-08-24 11:35:49 +00:00
Ed Schouten
22f2f875ad Make execution of 32-bit CloudABI executables work on amd64.
A nice thing about requiring a vDSO is that it makes it incredibly easy
to provide full support for running 32-bit processes on 64-bit systems.
Instead of letting the kernel be responsible for composing/decomposing
64-bit arguments across multiple registers/stack slots, all of this can
now be done in the vDSO. This means that there is no need to provide
duplicate copies of certain system calls, like the sys_lseek() and
freebsd32_lseek() we have for COMPAT_FREEBSD32.

This change imports a new vDSO from the CloudABI repository that has
automatically generated code in it that copies system call arguments
into a buffer, padding them to eight bytes and zero-extending any
pointers/size_t arguments. After returning from the kernel, it does the
inverse: extracting return values, in the process truncating
pointers/size_t values to 32 bits.

Obtained from:	https://github.com/NuxiNL/cloudabi
2016-08-24 10:51:33 +00:00
Ed Schouten
3b36d1e469 Remove an unused header file.
The native CloudABI data types header file used to be pulled in by the
vDSOs when they were still written in C. Since they are now all
rewritten in assembly, this can go away.
2016-08-24 10:36:52 +00:00
Ed Schouten
48734c99d3 Convert pointers obtained from the threadattr_t structure with TO_PTR().
In all of these source files, the userspace pointer size corresponds
with the kernelspace pointer size, meaning that casting directly works.
As I'm planning on making 32-bit execution on 64-bit systems work as
well, use TO_PTR() here as well, so that the changes between source
files remain minimal.
2016-08-24 10:13:18 +00:00
Ed Schouten
102754b3cf Add missing header dependency.
This header depends on sigaltstack32 being declared.
2016-08-24 09:57:19 +00:00
Michael Tuexen
884d8c53e6 When aborting an association, send the ABORT before notifying the upper
layer. For the kernel this doesn't matter, for the userland stack, it does.
While there, silence a clang warning when compiling it in userland.
2016-08-24 06:22:53 +00:00
Bruce Evans
1a58327bc3 Fix key delay and repeat, part 2.
Use sbintime_t timeouts with precision control to get very accurate
timing.  It costs little to always ask for about 1% accuracy, and the
not so new event timer implementation usual delivers that, and when
it can't it gets much closer than our previous coarse timeouts and
buggy simple countdown.

The 2 fastest atkbd repeat rates have periods 34 and 38 msec, and ukbd
pretended to support rates in between these.  This requires
sub-microsecond precision and accuracy even to handle the 4 msec
difference very well, but ukbd asked the timeout subsystem for timeouts
of 25 msec and the buggy simple countdown of this gave a a wide range
of precisions and accuracies depending on HZ and other timer
configuration (sometimes better than 25 msec but usually more like 50
msec).  We now ask for and usually get precision and accuracy of about
1% for each repeat and much better on average.

The 1% accuracy is overkill.  Rounding of 30 cps to 34 msec instead of
33 already gives an error of +2% instead of -1%, and ut AT keyboards on
PS/2 interfaces have similar errors.

A timeout is now scheduled for every keypress and release.  This allows
some simplifications that are not done.  It allows removing the timeout
scheduling for exiting polled mode where it was unsafe in ddb mode.  This
is done.  Exiting polled mode had some problems with extra repeats.  Now
exiting polled mode lets an extra timeout fire and the state is fudged
so that the timeout handler does very little.

The sc->time_ms variable is unsigned to avoid overflow.  Differences of
it need to be signed.  Signed comparisons were emulated by testing an
emulated sign bits.  This only works easily for '<' comparisonss, but
we now need a '<=' comparison.  Change the difference variable to
signed and use a signed comparison.  Using unsigned types here didn't
prevent overflow bugs but just reduced them.  Overflow occurs with
n repeats at the silly repeat period of [U]INT_MAX / n.  The old countdown
had an off by 1 error, and the simplifications would simply count down
1 to 0 and not need to accumulate possibly-large repeat repeats.
2016-08-24 05:54:11 +00:00
Sepherosa Ziehau
8f555c7d0a hyperv/ic: Redefine IC version negotiate message.
And stringent input IC version negotiate message checks.

MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7614
2016-08-24 04:36:04 +00:00
Sepherosa Ziehau
aa4a62df05 hyperv/hn: Log a warning for RESET_CMPLT.
RESET is not used by the hn(4) at all, and RESET_CMPLT does not even
have a rid to match with the pending requests.  So, let's put it
onto an independent switch branch and log a warning about it.

MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7602
2016-08-24 04:21:15 +00:00
Justin Hibbits
60152a4037 Fix system hang when large FDT is in use
Summary:
Kernel maps only one page of FDT. When FDT is more than one page in size, data
TLB miss occurs on memmove() when FDT is moved to kernel storage
(sys/powerpc/booke/booke_machdep.c, booke_init())

This introduces a pmap_early_io_unmap() to complement pmap_early_io_map(), which
can be used for any early I/O mapping, but currently is only used when mapping
the fdt.

Submitted by:	Ivan Krivonos <int0dster_gmail.com>
Differential Revision: https://reviews.freebsd.org/D7605
2016-08-24 03:51:40 +00:00
Kevin Lo
e626c40eb5 Bring datasheet URL up to date. 2016-08-24 03:44:16 +00:00
Sepherosa Ziehau
d51ce2d164 hyperv/hn: Remove the redundant rid setting for RNDIS HALT.
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7595
2016-08-24 03:28:58 +00:00
Sepherosa Ziehau
6d79d63a7b net/rndis: Fix RNDIS_STATUS_PENDING definition.
While I'm here, sort the RNDIS status in ascending order.

MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7594
2016-08-24 03:16:25 +00:00
Sepherosa Ziehau
48ef7b17f0 net/rndis: Add canonical RNDIS major/minor version as of today.
Reviewed by:	hps
MFC after:	1 week
Sponsored by:	Microsoft
Differential Revision:	https://reviews.freebsd.org/D7593
2016-08-24 03:08:13 +00:00
Mike Karels
0f5687f2ae Fix L2 caching for UDP over IPv6
ip6_output() was missing cache invalidation code analougous to
ip_output.c. r304545 disabled L2 caching for UDP/IPv6 as a workaround.
This change adds the missing cache invalidation code and reverts
r304545.

Reviewed by:	gnn
Approved by:	gnn (mentor)
Tested by:	peter@, Mike Andrews
MFC after:	3 weeks
Differential Revision:	https://reviews.freebsd.org/D7591
2016-08-24 00:52:30 +00:00