- Implement bus_adjust_resource() methods as far as necessary and in non-PCI
bridge drivers as far as feasible without rototilling them.
- As NEW_PCIB does a layering violation by activating resources at layers
above pci(4) without previously bubbling up their allocation there, move
the assignment of bus tags and handles from the bus_alloc_resource() to
the bus_activate_resource() methods like at least the other NEW_PCIB
enabled architectures do. This is somewhat unfortunate as previously
sparc64 (ab)used resource activation to indicate whether SYS_RES_MEMORY
resources should be mapped into KVA, which is only necessary if their
going to be accessed via the pointer returned from rman_get_virtual() but
not for bus_space(9) as the later always uses physical access on sparc64.
Besides wasting KVA if we always map in SYS_RES_MEMORY resources, a driver
also may deliberately not map them in if the firmware already has done so,
possibly in a special way. So in order to still allow a driver to decide
whether a SYS_RES_MEMORY resource should be mapped into KVA we let it
indicate that by calling bus_space_map(9) with BUS_SPACE_MAP_LINEAR as
actually documented in the bus_space(9) page. This is implemented by
allocating a separate bus tag per SYS_RES_MEMORY resource and passing the
resource via the previously unused bus tag cookie so we later on can call
rman_set_virtual() in sparc64_bus_mem_map(). As a side effect this now
also allows to actually indicate that a SYS_RES_MEMORY resource should be
mapped in as cacheable and/or read-only via BUS_SPACE_MAP_CACHEABLE and
BUS_SPACE_MAP_READONLY respectively.
- Do some minor cleanup like taking advantage of rman_init_from_resource(),
factor out the common part of bus tag allocation into a newly added
sparc64_alloc_bus_tag(), hook up some missing newbus methods and replace
some homegrown versions with the generic counterparts etc.
- While at it, let apb_attach() (which can't use the generic NEW_PCIB code
as APB bridges just don't have the base and limit registers implemented)
regarding the config space registers cached in pcib_softc and the SYSCTL
reporting nodes set up.
* The AR_ISR_RAC interrupt processing method has a subtle bug in all
the MAC revisions (including pre-11n NICs) until AR9300v2.
If you're unlucky, the clear phase clears an update to one of the
secondary registers, which includes TX status.
This shows up as a "watchdog timeout" if you're doing very low levels
of TX traffic. If you're doing a lot of non-11n TX traffic, you'll
end up receiving a TX interrupt from some later traffic anyway.
But when TX'ing 11n aggregation session traffic (which -HEAD isn't yet
doing), you may find that you're only able to TX one frame (due to
BAW restrictions) and this may end up hitting this race condition.
The only solution is to not use RAC and instead use AR_ISR and the
AR_ISR_Sx registers. The bit in AR_ISR which represents the secondary
registers are not cleared; only the AR_ISR_Sx bits are. This way
any updates which occur between the read and subsequent write will
stay asserted and (correctly) trigger a subsequent interrupt.
I've tested this on the AR5416, AR9160, AR9280. I will soon test
the AR9285 and AR9287.
* The AR_ISR TX and RX bits (and all others!) are set regardless of
whether the contents of the AR_IMR register. So if RX mitigation is
enabled, RXOK is going to be set in AR_ISR and it would normally set
HAL_INT_RX.
Fix the code to not set HAL_INT_RX when RXOK is set and RX mitigation
is compiled in. That way the RX path isn't prematurely called.
I would see:
* An interrupt would come in (eg a beacon, or TX completion) where
RXOK was set but RXINTM/RXMINT wasn't;
* ath_rx_proc() be called - completing RX frames;
* RXINTM/RXMINT would then fire;
* ath_rx_proc() would then be called again but find no frames in the
queue.
This fixes the RX mitigation behaviour to not overly call ath_rx_proc().
* Start to flesh out more correct timer interrupt handling - it isn't
kite/merlin specific. It's actually based on whether autosleep support
is enabled or not.
This is sourced from my 11n TX branch and has been tested for a few weeks.
Finally, the interrupt handling change should likely be implemented
for AR5210, AR5211 and AR5212.
There are some timing concerns which I've yet to fully map out.
In any case, there's an existing software driven mitigation method
for TX interrupts and when TX'ing 11n frames, the whole frame itself
generates an interrupt rather then the subframes.
Although I tried to fix this earlier by introducing HALDEBUG_G(), it
turns out there seem to be other cases where the pointer value is still
NULL.
* Fix DO_HALDEBUG() and the HALDEBUG macro to check whether ah is NULL
before deferencing it
* Remove HALDEBUG_G() as it's no longer needed
This is hopefully a merge candidate for 9.0-RELEASE as enabling
debugging at startup could result in a kernel panic.
by present MegaCLI version. It has some special meaning for the first s/g
list entry, while the main s/g list begins from the the second entry, and
those lists should remain separate after loading to the busdma map.
- Fix bug in 32bit ioctl compatibility shims when s/g list consists of
more then on element.
Sponsored by: iXsystems, inc.
MFC after: 3 days
Import the rest of HID improvements from the branch:
- improve report descriptor parser in libusbhid to handle several kinds of
reports same time;
- add to the libusbhid API two functions wrapping respective kernel IOCTLs
for reading and writing reports;
- tune uhid IOCTL interface to allow reading and writing arbitrary report,
when multiple supported by the device;
- teach usbhidctl to set output and feature reports;
- make usbhidaction support all the same item names as bhidctl.
Sponsored by: iXsystems, inc.
rather than the whole beacon interval.
The reference driver and Linux ath9k both choose 80% of the
beacon interval and they do it in the driver rather than
the HAL (Ath reference) or ath9k_hw (ath9k.)
This quietens stuck beacon conditions on my AR9220/AR9280
based NICs when a lot of burst broadcast/multicast traffic
is going on. It doesn't seem to annoy the earlier MACs as
much as the AR9280 and later one.
Obtained from: Linux ath9k, Atheros
local variable with a beacon interval of 100 TU. This never gets modified
if the beacon interval configuration changes.
This may have been correct in earlier times, but with the advent of
staggered beacons (which default to 1 / ATH_BCBUF beacon interval, so
25 TU here) this value is incorrect.
It is used to configure the default CABQ readytime. So here, the cabq
was being configured to be much greater than the target beacon timer
(TBTT.)
The driver should be configuring a cabq readytime value rather then
leaving it to the HAL to choose sensible defaults. This should be
done in the future - I'm simply trying to ensure sensible defaults
are chosen.
back-end features.
sys/dev/xen/netfront/netfront.c:
o Add xn_query_features() which reads the XenStore and
records the TSO, LRO, and chained ring-request support
of the backend.
o Rename xn_configure_lro() to xn_configure_features() and
use this routine to manage the setup of TSO, LRO, and
checksum offload.
o In create_netdev(), initialize if_capabilities and
if_hwassist to the capabilities found on all backends.
Delegate configuration of if_capenable and the TSO flag
if if_hwassist to xn_configure_features().
Reported by: Hugo Silva (fix inspired by patch provided)
Approved by: re
MFC after: 1 week
PV devices with the ioemu attribute set.
sys/dev/xen/netfront/netfront.c:
o If a mac address for the interface cannot be found
in the front-side XenStore tree, look for an entry
in the back-side tree. With ioemu devices, the
emulator does not populate the front side tree and
neither does Xend.
o Return an error rather than panic when an attach
attempt fails.
Reported by: Janne Snabb (fix inspired by patch provided)
PR: kern/154302
Approved by: re
Sponsored by: BQ Internet
sys/dev/xen/netfront/netfront.c:
o Implement netfront_suspend(), a specialized suspend
handler for the netfront driver. This routine simply
disables the carrier so the driver is idle during
system suspend processing.
o Fix a leak when re-initializing LRO during a link reset.
o In netif_release_tx_bufs(), when cleaning up the grant
references for our TX ring, use gnttab_end_foreign_access_ref
instead of attempting to grant the page again.
o In netif_release_tx_bufs(), we do not track mbufs associated
with mbuf chains, but instead just free each mbuf directly.
Use m_free(), not m_freem(), to avoid double frees of mbufs.
o Refactor some code to enhance clarity.
Approved by: re
MFC after: 1 week
Sponsored by: BQ Internet
sys/dev/xen/blkfront/block.h:
sys/dev/xen/blkfront/blkfront.c:
Remove now unused blkif_vdev_t from the blkfront soft.
sys/dev/xen/blkfront/blkfront.c:
o In blkfront_suspend(), indicate the desire to suspend
by changing the softc connected state to SUSPENDED, and
then wait for any I/O pending on the remote peer to
drain. Cancel suspend processing if I/O does not
drain within 30 seconds.
o Enable and update blkfront_resume(). Since I/O is
drained prior to the suspension of the VM, the complicated
recovery process performed by other Xen blkfront
implementations is avoided. We simply tear down the
connection to our old peer, and then re-connect.
o In blkif_initialize(), fix a resource leak and botched
return if we cannot allocate shadow memory for our
requests.
o In blkfront_backend_changed(), correct our response to
the XenbusStateInitialised state. This state indicates
that our backend peer has published sufficient data for
blkfront to publish ring information and other XenStore
data, not that a connection can occur. Blkfront now
will only perform connection processing in response to
the XenbusStateConnected state. This corrects an issue
where blkfront connected before the backend was ready
during resume processing.
Approved by: re
MFC after: 1 week
framework.
Sponsored by: BQ Internet
sys/xen/xenbus/xenbusb.c:
o In xenbusb_resume(), publish the state transition of the
resuming device into XenbusStateIntiailising so that the
remote peer can see it. Recording the state locally is
not sufficient to trigger a re-connect sequence.
o In xenbusb_resume(), defer new-bus resume processing until
after the remote peer's XenStore address has been updated.
The drivers may need to refer to this information during
resume processing.
sys/xen/xenbus/xenbusb_back.c:
sys/xen/xenbus/xenbusb_front.c:
Register xenbusb_resume() rather than bus_generic_resume()
as the handler for device_resume events.
sys/xen/xenstore/xenstore.c:
o Fix grammer in a comment.
o In xs_suspend(), pass suspend events on to the child
devices (e.g. xenbusb_front/back, that are attached
to the XenStore.
Approved by: re
MFC after: 1 week
This change fixes a race in device side mode during clear-stall from
host, which can cause data to be sent too early on the given
endpoint.
Approved by: re (kib)
MFC after: 1 week
initialization. Prior to this change packets may be transmitted with an
incorrect checksum.
Em(4) already has an equivalent change in r213234.
Obtained From: Sandvine
MFC After: 1 week
Approved by: re (bz)
patch modifies makesyscalls.sh to prefix all of the non-compatibility
calls (e.g. not linux_, freebsd32_) with sys_ and updates the kernel
entry points and all places in the code that use them. It also
fixes an additional name space collision between the kernel function
psignal and the libc function of the same name by renaming the kernel
psignal kern_psignal(). By introducing this change now we will ease future
MFCs that change syscalls.
Reviewed by: rwatson
Approved by: re (bz)
We are allocating some kilobytes of extra memory during USB device enumeration.
This does not change alot under FreeBSD, but makes sense for various embedded
operating systems using the FreeBSD USB stack, which have less memory
resources available.
Approved by: re (kib)
MFC after: 1 week
the BAR after parsing the CIS. This forces the resource range to be
reallocated if the BAR is reused by the device.
Submitted by: deischen
Reviewed by: imp
Approved by: re (kib)
This is another commit in a series of TDMA support fixes for the 11n NICs.
* Move ath_hal_getnexttbtt() into the HAL; write methods for it.
This returns a timer value in TSF, rather than TU.
* Move ath_hal_getcca() and ath_hal_setcca() into the HAL too, where they
likely now belong.
* Create a new HAL capability: HAL_CAP_LONG_RXDESC_TSF.
The pre-11n NICs write 15 bit TSF snapshots into the RX descriptor;
the AR5416 and later write 32 bit TSF snapshots into the RX descriptor.
* Use the new capability to choose between 15 and 31 bit TSF adjustment
functions in ath_extend_tsf().
* Write ar5416GetTsf64() and ar5416SetTsf64() methods.
ar5416GetTsf64() tries to compensate for TSF changes at the 32 bit boundary.
According to yin, this fixes the TDMA beaconing on 11n chipsets and TDMA
stations can now associate/talk, but there are still issues with traffic
stability which need to be investigated.
The ath_hal_extendtsf() function is also used in RX packet timestamping;
this may improve adhoc mode on the 11n chipsets. It also will affect the
timestamps seen in radiotap frames.
Submitted by: Kang Yin Su <cantona@cantona.net>
Approved by: re (kib)
whenever the link state is changed. Using software based polling
for media status tracking is known to cause MII access failure
under certain conditions once link is established so vge(4) used to
rely on link status change interrupt.
However DEVICE_POLLING completely disables generation of all kind
of interrupts on vge(4) such that this resulted in not detecting
link state change event. This means vge(4) does not correctly
detect established/lost link with DEVICE_POLLING. Losing the
interrupt made vge(4) not to send any packets to peer since vge(4)
does not try to send any packets when there is no established link.
Work around the issue by generating link state change interrupt
with DEVICE_POLLING.
PR: kern/160442
Approved by: re (kib)
reference driver does clear the async interrupts after each service.
I'll tinker with this in a future commit.
Obtained from: Atheros
Approved by: re (kib)
When the fast clock (44mhz) is enabled for 5ghz HT20, the
dual ADCs aren't enabled. Trying to do the ADC calibrations
here would result in calibration never completing; this
resulted in IQ calibration never running and thus performance
issues in 11a/11n HT20 mode.
Leave it enabled for non-fastclock (40mhz) 11a mode and
HT40 modes.
This has been fixed in discussion with Felix Fietkau (nbd)
and discussions with the Atheros baseband team.
Linux ath9k now has a similar fix.
Approved by: re (kib)
The current code was rounding down the maximum frame size instead of
routing up, resulting in a read size of 1024 bytes, in the non-jumbo
frame case, and splitting the packets across multiple mbufs.
Consequently the above problem exposed another issue, which is when
packets were splitted across multiple mbufs, and all of the mbufs in the
chain have the M_PKTHDR flag set.
Submitted by: original patch by Ray Ruvinskiy at BlueCoat dot com
Reviewed by: jfv, kmacy, rwatson
Approved by: re (rwatson)
MFC after: 5 days
is retrieved after a failed SCSI command to continue normal
operation. Else this sense information is retrived at the next
SCSI command.
Approved by: re (kib)
Reported by: Alex Kozlov
MFC after: 1 week
PR: usb/160299
which does not support the no synchronize cache SCSI command.
The __FreeBSD_version version macro has been bumped and
external kernel modules needs to be recompiled after
this patch.
Approved by: re (kib)
MFC after: 1 week
PR: usb/160299
- tjmax - Tj(max) value from the CPU
- delta - current delta reading
- resolution - sensor resolution in Celsius
- throttle_log - whether a #PROCHOT was asserted since last reset
Submitted by: Mark Johnston <markjdb gmail.com> (mostly)
MFC after: 1 month
Approved by: re (kib)
keyboards allow console break sequences (such as ctrl-alt-esc) to be
entered, alternative break can prove useful under virtualisation and
remote console systems where entering control sequences can be
difficult or unreliable.
MFC after: 3 weeks
Approved by: re (bz)
improvements:
(1) Implement new model in previously missed at91 UART driver
(2) Move BREAK_TO_DEBUGGER and ALT_BREAK_TO_DEBUGGER from opt_comconsole.h
to opt_kdb.h (spotted by np)
(3) Garbage collect now-unused opt_comconsole.h
MFC after: 3 weeks
Approved by: re (bz)
