Devices that use ISA IRQs expect them to be already configured, and don't
call bus_config_intr, which prevents those IRQs from working on Xen. In
order to solve it pre-register all the legacy IRQs with the default values
(edge triggered, low polarity) if no override is found.
While there add a panic if the registration of an interrupt override fails.
Sponsored by: Citrix Systems R&D
Improve and cleanup the Xen PIRQ event channel code:
- Remove the xi_shared field as it is unused.
- Clean the "pending" bit in the EOI handler, this is more similar to how
native interrupts are handled.
- Don't mask edge triggered PIRQs, edge trigger interrupts cannot be
masked.
- Panic if PHYSDEVOP_eoi fails.
- Remove the usage of the PHYSDEVOP_alloc_irq_vector hypercall because
it's just a no-op in the Xen versions that are supported by FreeBSD Dom0.
Sponsored by: Citrix Systems R&D
This is to avoid a witness warning about a waiting memory allocation in
the evnt hanlder registration code.
Reported by: markj
MFC after: 3 days
X-MFC with: r277795
Xenstore user-space device has two problems currently:
- It does not correctly handle concurrent clients, because it's storing
each client data in dev->si_drv1.
- It does not correctly free this data when the client closes the device.
In order to solve both of this issues store the per-client data using
cdevpriv, which also comes with a hook in order to perform the necessary
cleanup on device close.
While there also make the device eternal.
Sponsored by: Citrix Systems R&D
Reported and Tested by: thompsa
MFC after: 2 weeks
size as they arrived in. This allows the sender to determine the optimal
fragment size by Path MTU Discovery.
Roughly based on the OpenBSD work by Alexander Bluhm.
Submitted by: Kristof Provost
Differential Revision: D1767
Now compiler does not need any help.
The patch does not change generated code.
Sponsored by: Solarflare Communications, Inc.
Approved by: gnn (mentor), glebius
It makes sfxge_tso_state smaller and even makes tso_start_new_packet()
few bytes smaller. Data used to calculate packet size are used nearby,
so it should be no problems with cache etc.
Sponsored by: Solarflare Communications, Inc.
Approved by: gnn (mentor), glebius
That partially fixes IPv6 fragment handling. Thanks to Kristof for
working on that.
Submitted by: Kristof Provost
Tested by: peter
Differential Revision: D1765
* Do not subvert vfs.timestamp_precision by reading the time and passing
that to utimensat(). Instead, pass UTIME_NOW. A fallback to a NULL times
pointer is no longer used.
* Do not ignore -a/-m if the user has write access but does not own the
file. Leave timestamps unchanged using UTIME_OMIT and do not fall back to
a NULL times pointer (which would set both timestamps) if that fails.
Reviewed by: bde
I don't like having it in this function; I may migrate it to ar9300_freebsd.c
at some point to keep the HAL code pollution down.
This allows ANI to be disabled via a sysctl.
Tested:
* AR9331, STA/TDMA modes
timeout previously collected only one child status with wait(2). If this
was one of the grandchildren timeout would return to sigsuspend and wait
until the timeout expired. Instead, loop for all children.
PR: kern/197608
Reviewed by: bapt, kib
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
This is a custom FreeBSD HAL method that is used by the TDMA code
to program the beacon timers directly without any guesswork/assumptions
by the HAL.
This brings up basic TDMA master/slave support on the AR9380 HAL,
however there are other issues preventing it from being stable.
(I'm seeing beacon interval instability, which may be due to
busy 2GHz air, but also may be due to some HAL configuration
issues with regards to ANI, or hardware timer programming, etc.)
Tested:
* AR9331 (Carambola2), STA, AP, adhoc and TDMA master mode.
As a followup to r278363, there is one more case where
stayopen can be accessed uninitialized, but even after
swapping arguments, access is possible in some other
cases so prevent it completely by initializing stayopen.
CID: 1018729
CID: 1018732
The existing implementation had a broken comparison that could
overflow and return confusing values. Replace this with a check
that avoids the overflow before it happens.
Consistently return a maximum value also on the case of negative
arguments since negative is considered an overflow and means
infinity for our current setrlimit().
New revamped version is credited to Bruce Evans.
CID: 1199295
MFC after: 1 week
has been removed and the driver has been greatly simplified and
optimised for FreeBSD. The driver is currently not built by default.
Requested by: Bruce Simpson <bms@fastmail.net>
