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Commit Graph

93257 Commits

Author SHA1 Message Date
Rui Paulo
132804a6c4 Add support for the second GPIO pin bank on the Wii and add support for
shutting down the system.
2013-05-18 19:30:42 +00:00
Adrian Chadd
9be82a4209 Be (very) careful about how to add more TX DMA work.
The list-based DMA engine has the following behaviour:

* When the DMA engine is in the init state, you can write the first
  descriptor address to the QCU TxDP register and it will work.

* Then when it hits the end of the list (ie, it either hits a NULL
  link pointer, OR it hits a descriptor with VEOL set) the QCU
  stops, and the TxDP points to the last descriptor that was transmitted.

* Then when you want to transmit a new frame, you can then either:
  + write the head of the new list into TxDP, or
  + you write the head of the new list into the link pointer of the
    last completed descriptor (ie, where TxDP points), then kick
    TxE to restart transmission on that QCU>

* The hardware then will re-read the descriptor to pick up the link
  pointer and then jump to that.

Now, the quirks:

* If you write a TxDP when there's been no previous TxDP (ie, it's 0),
  it works.

* If you write a TxDP in any other instance, the TxDP write may actually
  fail.  Thus, when you start transmission, it will re-read the last
  transmitted descriptor to get the link pointer, NOT just start a new
  transmission.

So the correct thing to do here is:

* ALWAYS use the holding descriptor (ie, the last transmitted descriptor
  that we've kept safe) and use the link pointer in _THAT_ to transmit
  the next frame.

* NEVER write to the TxDP after you've done the initial write.

* .. also, don't do this whilst you're also resetting the NIC.

With this in mind, the following patch does basically the above.

* Since this encapsulates Sam's issues with the QCU behaviour w/ TDMA,
  kill the TDMA special case and replace it with the above.

* Add a new TXQ flag - PUTRUNNING - which indicates that we've started
  DMA.

* Clear that flag when DMA has been shutdown.

* Ensure that we're not restarting DMA with PUTRUNNING enabled.

* Fix the link pointer logic during TXQ drain - we should always ensure
  the link pointer does point to something if there's a list of frames.
  Having it be NULL as an indication that DMA has finished or during
  a reset causes trouble.

Now, given all of this, i want to nuke axq_link from orbit.  There's now HAL
methods to get and set the link pointer of a descriptor, so what we
should do instead is to update the right link pointer.

* If there's a holding descriptor and an empty TXQ list, set the
  link pointer of said holding descriptor to the new frame.

* If there's a non-empty TXQ list, set the link pointer of the
  last descriptor in the list to the new frame.

* Nuke axq_link from orbit.

Note:

* The AR9380 doesn't need this.  FIFO TX writes are atomic.  As long as
  we don't append to a list of frames that we've already passed to the
  hardware, all of the above doesn't apply.  The holding descriptor stuff
  is still needed to ensure the hardware can re-read a completed
  descriptor to move onto the next one, but we restart DMA by pushing in
  a new FIFO entry into the TX QCU.  That doesn't require any real
  gymnastics.

Tested:

* AR5210, AR5211, AR5212, AR5416, AR9380 - STA mode.
2013-05-18 18:27:53 +00:00
Adrian Chadd
f2f6761490 Re-add some code to exclude transmitting if we're in reset.
This fixes some "transmitting during reset" bugs that crept in after
I messed around with this part of the transmit path.
2013-05-18 13:58:07 +00:00
Tim Kientzle
3f15ba3d2c Correct the spelling of "okay".
Add pinmux setting for the Reset GPIO pin for MMC1.
2013-05-18 12:54:37 +00:00
Tim Kientzle
b5eb012033 Label the mmc child after the parent. 2013-05-18 12:53:20 +00:00
Alexander V. Chernikov
22f8ce4335 Use separate function to update mbuf checksum flags instead of
duplicating the same code in different places.

MFC after:	2 weeks
2013-05-18 08:14:21 +00:00
Hans Petter Selasky
e5359a3bba Don't clear stall at first time use of USB MIDI endpoints.
Most likely some non-USB compliant devices will choke on it
sooner or later. Clear stall is strictly speaking not needed.
If the first MIDI command sent or transmitted is lost, this
is not a big problem for us.

MFC after:	1 week
2013-05-18 07:16:20 +00:00
Alexander V. Chernikov
d54455b0c9 Fix rte leak introduced in r248070.
MFC after:	2 weeks
2013-05-18 07:10:22 +00:00
Hans Petter Selasky
33da3daa40 Fix issue with "Logitech Webcam C525":
Set a valid alternate interface setting
when enumerating USB audio devices else
the device mentioned will not work like
expected.

PR:		usb/178722
MFC after:	1 week
2013-05-18 07:03:06 +00:00
Michael Tuexen
553bb0688c Set errno to ETIMEDOUT if an SCTP association times out during
setup.

MFC after: 1 week
2013-05-17 22:26:05 +00:00
Michael Tuexen
b05fbf171e Don't send an ABORT chunk with verification 0.
MFC after: 1 week
2013-05-17 21:45:52 +00:00
Warner Losh
8b18cb1c23 For ARM, MIPS, and PowerPC, default to 32-byte alignment, but allow it
to be as small as 8.
2013-05-17 20:53:15 +00:00
Attilio Rao
e3ed7ff03f Use readlocking now that assertions on vm_page_lookup() are relaxed.
Sponsored by:	EMC / Isilon storage division
Reviewed by:	alc
Tested by:	flo, pho
2013-05-17 20:03:55 +00:00
Gavin Atkinson
1c6951aeb6 o Retrive the part number (CP2103 etc) from the hardware on attach.
o  The CP2101 and CP2102 do not support GPIO pin use at all, enforce this.
o  Support reading the GPIO status on the second port of the CP2105.  More
   work is needed before the CP2105 GPIO pins can be used as outputs.

Hardware donated by:	Silicon Labs
MFC after:		3 weeks
2013-05-17 19:13:31 +00:00
Alan Cox
c141ae7f49 Relax the object locking in vm_fault_prefault(). A read lock suffices.
Reviewed by:	attilio
Sponsored by:	EMC / Isilon Storage Division
2013-05-17 19:02:36 +00:00
Alan Cox
658f180b3b Relax the object locking assertion in pmap_enter_locked().
Reviewed by:	attilio
Sponsored by:	EMC / Isilon Storage Division
2013-05-17 18:59:00 +00:00
Alan Cox
767a6420bc Relax the object locking assertion in vm_page_lookup(). Now that a radix
tree is used to maintain the object's collection of resident pages,
vm_page_lookup() no longer needs an exclusive lock.

Reviewed by:    attilio
Sponsored by:   EMC / Isilon Storage Division
2013-05-17 18:49:43 +00:00
Rui Paulo
613c4afd62 Revert r250692. We'll use 1 kernel config file for the BeagleBone models. 2013-05-17 15:20:45 +00:00
Konstantin Belousov
f05f3c1764 Add new capability types encodings from HyperTransport I/O Link
Specification revisions 3.00 and 3.10.

Submitted by:	Dmitry Luhtionov <dmitryluhtionov@gmail.com>
MFC after:	1 week
2013-05-17 14:04:31 +00:00
Adrian Chadd
97c9a8e806 Add some more debugging printf()s to complain if the ath_buf tx queue
doesn't match the actual hardware queue this frame is queued to.

I'm trying to ensure that the holding buffers are actually being queued
to the same TX queue as the holding buffer that they end up on.
I'm pretty sure this is all correct so if this complains, it'll be due
to some kind of subtle broken-ness that needs fixing.

This is only done for legacy hardware, not EDMA hardware.

Tested:

* AR5416 STA mode, very lightly
2013-05-17 05:16:30 +00:00
Julian Elischer
96929f3913 Fix cut-n-paste error. 2013-05-16 21:27:47 +00:00
Warner Losh
c96e8c3222 When reporting the user readable size, round up. Several SD cards not
only use SI units, but also are a couple of percent short. If you need
to know the exact size, diskinfo will return exact results.
2013-05-16 19:44:51 +00:00
Jaakko Heinonen
c532f8c4d6 A library function shall not set errno to 0.
Reviewed by:	mdf
2013-05-16 18:13:10 +00:00
Adrian Chadd
6d07d3e014 Tidy up the debugging - don't bother printing out TID pointers; now
that we are printing out the MAC address in these fields, just printing
out the TID is enough.
2013-05-16 17:53:12 +00:00
Adrian Chadd
b45a991e92 Limit the number of software queued frames when doing non-aggregation.
This should prevent the TX queue being filled with non-aggregate frames,
causing starvation and non-fair queue behaviour.
2013-05-16 17:46:32 +00:00
Adrian Chadd
dfaf8de927 Dump out the holding buffer descriptor contents and addresses stopping DMA. 2013-05-16 17:45:01 +00:00
Julian Elischer
4871fc4ab5 Finally change the mbuf to have its own fib field instead of stealing
4 flag bits. This was supposed to happen in 8.0, and again in 2012..

MFC after:	never
2013-05-16 16:20:17 +00:00
Konstantin Belousov
5ada86640b Add dependencies on the firmware, which allows the loading of the cxgb
and cxgbe modules.

Reviewed and approved by:	np
MFC after:	1 week
2013-05-16 13:07:02 +00:00
Grzegorz Bernacki
0a98e01821 Fix L2 cache write-back invalidate for Sheeva core.
Submitted by:	Michal Dubiel
Obtained from:	Netasq, Semihalf
2013-05-16 09:43:04 +00:00
Rui Paulo
78a4f635f8 Add a kernel config file for the BeableBone Black SoC. 2013-05-16 03:51:00 +00:00
Adrian Chadd
22a3aee637 Implement my first cut at "correct" node power-save and
PS-POLL support.

This implements PS-POLL awareness i nthe

* Implement frame "leaking", which allows for a software queue
  to be scheduled even though it's asleep
* Track whether a frame has been leaked or not
* Leak out a single non-AMPDU frame when transmitting aggregates
* Queue BAR frames if the node is asleep
* Direct-dispatch the rest of control and management frames.
  This allows for things like re-association to occur (which involves
  sending probe req/resp as well as assoc request/response) when
  the node is asleep and then tries reassociating.
* Limit how many frames can set in the software node queue whilst
  the node is asleep.  net80211 is already buffering frames for us
  so this is mostly just paranoia.
* Add a PS-POLL method which leaks out a frame if there's something
  in the software queue, else it calls net80211's ps-poll routine.
  Since the ath PS-POLL routine marks the node as having a single frame
  to leak, either a software queued frame would leak, OR the next queued
  frame would leak. The next queued frame could be something from the
  net80211 power save queue, OR it could be a NULL frame from net80211.

TODO:

* Don't transmit further BAR frames (eg via a timeout) if the node is
  currently asleep.  Otherwise we may end up exhausting management frames
  due to the lots of queued BAR frames.

  I may just undo this bit later on and direct-dispatch BAR frames
  even if the node is asleep.

* It would be nice to burst out a single A-MPDU frame if both ends
  support this.  I may end adding a FreeBSD IE soon to negotiate
  this power save behaviour.

* I should make STAs timeout of power save mode if they've been in power
  save for more than a handful of seconds.  This way cards that get
  "stuck" in power save mode don't stay there for the "inactivity" timeout
  in net80211.

* Move the queue depth check into the driver layer (ath_start / ath_transmit)
  rather than doing it in the TX path.

* There could be some naughty corner cases with ps-poll leaking.
  Specifically, if net80211 generates a NULL data frame whilst another
  transmitter sends a normal data frame out net80211 output / transmit,
  we need to ensure that the NULL data frame goes out first.
  This is one of those things that should occur inside the VAP/ic TX lock.
  Grr, more investigations to do..

Tested:

* STA: AR5416, AR9280
* AP: AR5416, AR9280, AR9160
2013-05-15 18:33:05 +00:00
David C Somayajulu
f10a77bb82 Add Qlogic 10Gigabit Ethernet & CNA Adapter Driver Version 3.10.10 for
QLogic 8300 Series Adapters

Submitted by: David C Somayajulu (davidcs@freebsd.org) QLogic Corporation
Approved by: George Neville-Neil (gnn@freebsd.org)
2013-05-15 17:03:09 +00:00
Brooks Davis
a5b2b29fe1 Add a new option WITHOUT_FORMAT_EXTENSIONS to disable flags related to
checking our kernel printf extensions.  This is useful to allow
compilers without these extensions to build kernels.

Sponsored by:	DARPA, AFRL
2013-05-15 13:04:10 +00:00
Dag-Erling Smørgrav
72ccd4cc6b Fix typo in comment.
Submitted by:	Alex Weber <alexwebr@gmail.com>
MFC after:	1 week
2013-05-15 08:38:49 +00:00
Grzegorz Bernacki
4442f74b81 Port the new PV entry allocator from amd64/i386/mips to armv6/v7.
PV entries are now roughly half the size.
Instead of using a shared UMA zone for 28 byte pv entries
(two 8-byte tailq nodes, a 4 byte pointer, a 4 byte address and 4 byte
flags), we allocate a page at a time per process.
This provides 252 pv entries per process (actually, per pmap address space)
and eliminates one of the 8-byte tailq entries since we now can track
per-process pv entries implicitly.
The pointer to the pmap can be eliminated by doing address arithmetic to
find the metadata on the page headers to find a single pointer shared by
all 252 entries. There is an 8-int bitmap for the freelist of those 252
entries.
When in serious low memory condition, allocation of another pv_chunk is
possible by freeing some pages in pmap_pv_reclaim().

Added pv_entry/pv_chunk related statistics to pmap.
pv_entry/pv_chunk statistics can be accessed via sysctl vm.pmap.

Ported PTE freelist of KVA allocation and maintenance from i386.
Using an idea from Stephan Uphoff, use the empty pte's that correspond
to the unused kva in the pv memory block to thread a freelist through.
This allows us to free pages that used to be used for pv entry chunks
since we can now track holes in the kva memory block.

As both ARM pmap.c and pmap-v6.c use the same header and pv_entry, pmap and
md_page structures are different, it was needed to separate code designed
for ARMv6/7 from the one for other ARMs.

Submitted by:	Zbigniew Bodek <zbb@semihalf.com>
Reviewed by:	alc
Sponsored by:	The FreeBSD Foundation, Semihalf
2013-05-14 09:47:58 +00:00
Ed Schouten
31ffd8039d Improve readability of static assertions for OFFSET_* macros.
Instead of doing all sorts of weird casting of constants to
pointer-pointers, simply use the standard C offsetof() macro to obtain
the offset of the respective fields in the structures.
2013-05-13 21:47:17 +00:00
Ed Schouten
84242b32db Rework the way C11 keywords are defined.
Instead of only checking the __STDC_VERSION__, we can also use Clang's
__has_extension() to check for features specifically. This allows us to,
say, use Clang's native _Static_assert() instead of the typedef hack,
making the compiler error messages a lot more readable.

Reviewed by:	theraven
2013-05-13 21:46:07 +00:00
Adrian Chadd
370f81fab6 Add ALQ beacon debugging. 2013-05-13 21:18:00 +00:00
Adrian Chadd
5086df9f1f Support sending ATH_ALQ messages with no payload. 2013-05-13 21:17:27 +00:00
Jung-uk Kim
634cf355b0 Remove a bogus re-assignment.
MFC after:	3 days
2013-05-13 20:03:59 +00:00
Navdeep Parhar
d607c7477c Deal correctly with 40G ports that don't have any transceiver plugged
in.  Do not claim that they have unknown tranceivers.

MFC after:	3 days
2013-05-13 20:00:03 +00:00
Jim Harris
d13fc9954b Fix typo in net.inet.tcp.minmss sysctl description.
MFC after:	3 days
2013-05-13 19:55:27 +00:00
Adrian Chadd
9b48fb4b32 Improve the debugging output - use the MAC address rather than various
pointer values everywhere.
2013-05-13 19:52:35 +00:00
Adrian Chadd
ba83edd45c Since the node state is 100% back under the TX lock, just kill the use
of atomics.

I'll re-think this nonsense later.
2013-05-13 19:03:12 +00:00
Adrian Chadd
22780332ae Oops, commit the other half of r250606. 2013-05-13 19:02:22 +00:00
Adrian Chadd
01a2ad5a4c This lock only protects the rate control state for now, mention this. 2013-05-13 18:57:18 +00:00
Adrian Chadd
4bed2b67ca Begin tidying up the reassociation and node sleep/wakeup paths.
* Move the node sleep/wake state under the TX lock rather than the
  node lock.  Let's leave the node lock protecting rate control only
  for now.

* When reassociating, various state needs to be cleared.  For example,
  the aggregate session needs to be torn down, including any pending
  aggregation negotiation and BAR TX waiting.

* .. and we need to do a "cleanup" pass since frames in the hardware
  TX queue need to be transmitted.

Modify ath_tx_tid_cleanup() to be called with the TX lock held and push
frames into a completion list.  This allows for the cleanup to be
done atomically for all TIDs in a node rather than grabbing and
releasing the TX lock each time.
2013-05-13 18:56:04 +00:00
Attilio Rao
7e226537c7 o Add accessor functions to add and remove pages from a specific
freelist.
o Split the pool of free pages queues really by domain and not rely on
  definition of VM_RAW_NFREELIST.
o For MAXMEMDOM > 1, wrap the RR allocation logic into a specific
  function that is called when calculating the allocation domain.
  The RR counter is kept, currently, per-thread.
  In the future it is expected that such function evolves in a real
  policy decision referee, based on specific informations retrieved by
  per-thread and per-vm_object attributes.
o Add the concept of "probed domains" under the form of vm_ndomains.
  It is responsibility for every architecture willing to support multiple
  memory domains to correctly probe vm_ndomains along with mem_affinity
  segments attributes.  Those two values are supposed to remain always
  consistent.
  Please also note that vm_ndomains and td_dom_rr_idx are both int
  because segments already store domains as int.  Ideally u_int would
  have much more sense. Probabilly this should be cleaned up in the
  future.
o Apply RR domain selection also to vm_phys_zero_pages_idle().

Sponsored by:	EMC / Isilon storage division
Partly obtained from:	jeff
Reviewed by:	alc
Tested by:	jeff
2013-05-13 15:40:51 +00:00
Peter Wemm
df839389c5 Bandaid for compiling with gcc, which happens to be the default compiler
for a number of platforms still.
2013-05-13 07:09:31 +00:00
Rick Macklem
77a03c148c Add support for the eofflag to nfs_readdir() in the new NFS
client so that it works under a unionfs mount.

Submitted by:	Jared Yanovich (slovichon@gmail.com)
Reviewed by:	kib
MFC after:	2 weeks
2013-05-12 21:48:08 +00:00