exported via PCI passthrough.
- Do not check for a specific physical function (PF) before claiming a device.
Different PFs have different device-ids so this check is redundant anyway.
- Obtain the PF# from the WHOAMI register instead of pci_get_function().
- Setup the memory windows using the real BAR0 address, not what the VM says it
is.
Obtained from: Chelsio Communications
Possibly do some entra work in case we would not get into the
ifa0 != NULL paths later as we already do for the mltaddr before.
XXX We should possibly error in case in6_setscope fails.
Reference: http://lists.freebsd.org/pipermail/freebsd-net/2011-September/029829.html
Submitted by: bz
MFC after: 1 week
* qos[1] subfield is never assigned a value before this statement.
qos[1] can potentially be OR:ed with garbage. Make it an assignment instead;
* Remove brackets around if statement;
Approved by: adrian
pmap_remove(). The execution of these functions is no longer serialized
by the pvh global lock.
Make some stylistic changes to the affected code for the sake of
consistency with related code elsewhere in the pmap.
not by some hint setting. Do more preparations for FC-Tape.
Clean up resource counting for 24XX or later chipsets so
we find out after EXEC_FIRMWARE what is actually supported.
Set target mode exchange count based upon whether or not
we are supporting simultaneous target/initiator mode. Clean
up some old (pre-24XX) xfwoption and zfwoption issues.
Sponsored by: Spectralogic
MFC after: 3 days
the assumption that ath_softc doesn't change size based on build time
configuration.
I picked up on this because suddenly radar stuff didn't work; and
although the ath_dfs code was setting sc_dodfs=1, the main ath driver
saw sc_dodfs=0.
So for now, include opt_ath.h in driver source files. This seems like
the sane thing to do anyway.
I'll have to do a pass over the code at some later stage and turn
the radiotap TX/RX structs into malloc'ed memory, rather than in-line
inside of ath_softc. I'd rather like to keep ath_softc the same
layout regardless of configuration parameters.
Pointy hat to: adrian
a buffer pointer.
For large radar pulses, the AR9130 and later will return a series of
FFT results for software processing. These can overflow a single 2KB
buffer on longer pulses. This would result in undefined buffer behaviour.
This includes a few new fields in each RXed frame:
* per chain RX RSSI (ctl and ext);
* current RX chainmask;
* EVM information;
* PHY error code;
* basic RX status bits (CRC error, PHY error, etc).
This is primarily to allow me to do some userland PHY error processing
for radar and spectral scan data. However since EVM and per-chain RSSI
is provided, others may find it useful for a variety of tasks.
The default is to not compile in the radiotap vendor extensions, primarily
because tcpdump doesn't seem to handle the particular vendor extension
layout I'm using, and I'd rather not break existing code out there that
may be (badly) parsing the radiotap data.
Instead, add the option 'ATH_ENABLE_RADIOTAP_VENDOR_EXT' to your kernel
configuration file to enable these options.
and the CRC error bits set. The radar payload is correct.
When this happens, the stack doesn't see them PHY error frames and
isn't interpreted as a PHY error. So, no radar detection and no radiotap
PHY error handling.
Now, this may introduce some weird issues if the MAC sends up some other
combination of CRC error + PHY error frames; this commit would break that
and mark them as PHY errors instead of CRC errors.
I may tinker with this a little more to pass radar/early radar/spectral
frames up as PHY errors if the CRC bit is set, to restore the previous
behaviour (where if CRC is set on a PHY error frame, it's marked as a CRC
error rather than PHY error.)
Tested on: AR5416, over the air, to a USRP N200 which is generating a
large number of a variety of radar pulses.
TODO: Test on AR9130, AR9160, AR9280 (and maybe radar pulses on
2GHz on AR9285/AR9287.)
PR: kern/169362
a da(4) instance going away while GEOM is still probing it.
In this case, the GEOM disk class instance has been created by
disk_create(), and the taste of the disk is queued in the GEOM
event queue.
While that event is queued, the da(4) instance goes away. When the
open call comes into the da(4) driver, it dereferences the freed
(but non-NULL) peripheral pointer provided by GEOM, which results
in a panic.
The solution is to add a callback to the GEOM disk code that is
called when all of its resources are cleaned up. This is
implemented inside GEOM by adding an optional callback that is
called when all consumers have detached from a provider, and the
provider is about to be deleted.
scsi_cd.c,
scsi_da.c: In the register routine for the cd(4) and da(4)
routines, acquire a reference to the CAM peripheral
instance just before we call disk_create().
Use the new GEOM disk d_gone() callback to register
a callback (dadiskgonecb()/cddiskgonecb()) that
decrements the peripheral reference count once GEOM
has finished cleaning up its resources.
In the cd(4) driver, clean up open and close
behavior slightly. GEOM makes sure we only get one
open() and one close call, so there is no need to
set an open flag and decrement the reference count
if we are not the first open.
In the cd(4) driver, use cam_periph_release_locked()
in a couple of error scenarios to avoid extra mutex
calls.
geom.h: Add a new, optional, providergone callback that
is called when a provider is about to be deleted.
geom_disk.h: Add a new d_gone() callback to the GEOM disk
interface.
Bump the DISK_VERSION to version 2. This probably
should have been done after a couple of previous
changes, especially the addition of the d_getattr()
callback.
geom_disk.c: Add a providergone callback for the disk class,
g_disk_providergone(), that calls the user's
d_gone() callback if it exists.
Bump the DISK_VERSION to 2.
geom_subr.c: In g_destroy_provider(), call the providergone
callback if it has been provided.
In g_new_geomf(), propagate the class's
providergone callback to the new geom instance.
blkfront.c: Callers of disk_create() are supposed to pass in
DISK_VERSION, not an explicit disk API version
number. Update the blkfront driver to do that.
disk.9: Update the disk(9) man page to include information
on the new d_gone() callback, as well as the
previously added d_getattr() callback, d_descr
field, and HBA PCI ID fields.
MFC after: 5 days
This is required for ARM EABI. Section 7.1.1 of the Procedure Call for the
ARM Architecture (AAPCS) defines wchar_t as either an unsigned int or an
unsigned short with the former preferred.
Because of this requirement we need to move the definition of __wchar_t to
a machine dependent header. It also cleans up the macros defining the limits
of wchar_t by defining __WCHAR_MIN and __WCHAR_MAX in the same machine
dependent header then using them to define WCHAR_MIN and WCHAR_MAX
respectively.
Discussed with: bde
to add PV list locking to pmap_pv_demote_pde(), it is necessary to change
the way that pmap_pv_demote_pde() allocates PV entries. Specifically,
once pmap_pv_demote_pde() begins modifying the PV lists, it can't allocate
any new PV chunks, because that could require the PV list lock to be
dropped. So, all necessary PV chunks must be allocated in advance. To my
surprise, this new approach is a few percent faster than the old one.
the scheduled task from tc_windup(). Do it directly from tc_windup in
interrupt context [1].
Establish the permanent mapping of the shared page into the kernel
address space, avoiding the potential need to sleep waiting for
allocation of sf buffer during vdso_timehands update. As a
consequence, shared_page_write_start() and shared_page_write_end()
functions are not needed anymore.
Guess and memorize the pointers to native host and compat32 sysentvec
during initialization, to avoid the need to get shared_page_alloc_sx
lock during the update.
In tc_fill_vdso_timehands(), do not loop waiting for timehands
generation to stabilize, since vdso_timehands is written in the same
interrupt context which wrote timehands.
Requested by: mav [1]
MFC after: 29 days
and CAM_LUN_INVALID for case of missing devices. In removes tons of error
messages from CAM during bus scans.
Reported and tested by: Mike Tancsa <mike@sentex.net>
MFC after: 3 days
defect information it has before grabbing the full defect list.
This works around a bug with some Hitachi drives that generate data overrun
errors when they are asked for more defect data than they have.
The change is done in a spec-compliant way, so it should have no negative
impact on drives that don't have this issue.
This is based on work originally done at Sandvine.
scsi_da.h: Add a define for the maximum amount of data that can be
contained in a defect list.
camcontrol.c: Update the readdefects() function to issue an initial
command to determine the length of the defect list, and
then use that length in the request for the full defect
list.
camcontrol.8: Add a note that some drives will report 0 defects available
if you don't request either the PLIST or GLIST.
Submitted by: Mark Johnston <markjdb@gmail.com> (original version)
MFC after: 3 days
by vm_objects.
- Add flags for the per-object lock and free pages queue mutex lock.
Use the newly added flags to mark the cache root within the vm_object
structure.
Please note that other vm_object members should be marked with correct
locking but they are left for other commits.
In collabouration with: alc
MFC after: 3 days3 days3 days
trampoline addresses after the shared page is enabled. Handle FreeBSD
ABIs without shared page support too.
Reported and tested by: David Wolfskill <david catwhisker org>
(previous version)
Pointy hat to: kib
MFC after: 1 month
usermode, using shared page. The structures and functions have vdso
prefix, to indicate the intended location of the code in some future.
The versioned per-algorithm data is exported in the format of struct
vdso_timehands, which mostly repeats the content of in-kernel struct
timehands. Usermode reading of the structure can be lockless.
Compatibility export for 32bit processes on 64bit host is also
provided. Kernel also provides usermode with indication about
currently used timecounter, so that libc can fall back to syscall if
configured timecounter is unknown to usermode code.
The shared data updates are initiated both from the tc_windup(), where
a fast task is queued to do the update, and from sysctl handlers which
change timecounter. A manual override switch
kern.timecounter.fast_gettime allows to turn off the mechanism.
Only x86 architectures export the real algorithm data, and there, only
for tsc timecounter. HPET counters page could be exported as well, but
I prefer to not further glue the kernel and libc ABI there until
proper vdso-based solution is developed.
Minimal stubs neccessary for non-x86 architectures to still compile
are provided.
Discussed with: bde
Reviewed by: jhb
Tested by: flo
MFC after: 1 month
Do not rely on the busy state of the page from which we allocate the
chunk, to protect allocator state. Use statically allocated sx lock
instead.
Provide more flexible KPI. In particular, allow to allocate chunk
without providing initial data, and allow writes into existing
allocation. Allow to get an sf buf which temporary maps the chunk, to
allow sequential updates to shared page content without unmapping in
between.
Reviewed by: jhb
Tested by: flo
MFC after: 1 month
