Previously the driver supported the DHT11 sensor. Now it supports
DHT11, DHT12, DHT21, DHT22, AM3201, AM3202.
All these chips are similar, differing primarily in supported temperature
and humidity ranges and accuracy (and, presumably, cost). There are two
basic data formats reported by the various chips, and it is possible to
figure out at runtime which format to use for decoding the data based on
the range of values in a single byte of the humidity measurement. (which
is detailed in a comment block, so I won't recapitulate it here).
functions to handle the sysctls, they all just access simple readonly
integer variables. There's no need to track the oids of the ones we add,
since the teardown is done by newbus code, not the driver itself.
Also remove the DDB code, because it just provides access to the same data
that the sysctls already provide.
At the end of a read cycle, set the gpio pin to INPUT rather than OUTPUT.
The state of the single-wire "bus" when idle should be high; setting the
pin to input allows the external pullup to pull the line high. Setting it
to output (and leaving it driving low) was leading a good read cycle followed
by one that would fail, and it just continued like that forever, effectively
reading the sensor once every 10 seconds instead of 5.
In the attach function, do an initial read from the device before registering
the sysctls for accessing the last-read values, to prevent reading spurious
values for the first 5 seconds after the driver attaches.
Do a callout_drain() in the detach function to prevent crashes after
unloading the module.
Summary:
There's no need to use the fallback fls() and flsl() libkern functions
when the PowerISA includes instructions that already do the bulk of the
work. Take advantage of this through the GCC builtins __builtin_clz()
and __builtin_clzl().
Reviewed by: luporl
Differential Revision: https://reviews.freebsd.org/D22340
Summary:
moea64_pte_sync_native() and moea64_pte_unset_native() don't need the
full PTE created, they only need to check that the PVO has a matching
PTE to the PTE in the page table. Don't waste time creating the full
PTE in this case.
Reviewed by: luporl
Differential Revision: https://reviews.freebsd.org/D22341
zones would never be freed. In the case of tmpfs this was not true. While
here test for the right bit to disable the keg related sysctls for zones
that don't have kegs.
Reported by: pho
Reviewed by: rlibby
Differential Revision: https://reviews.freebsd.org/D22655
A valid reference is all that is required. If we race with a deallocation
we will harmlessly misidentify the type of an already dead object.
Reviewed by: kib, markj
Differential Revision: https://reviews.freebsd.org/D22636
- Do not unnecessarily strdup().
- Check return value of getdiskinfo(), if it failed, bail out.
Reviewed by: imp
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D22729
embedded slabs but also is an opportunity to tidy up code and add
accessor inlines.
Reviewed by: markj, rlibby
Differential Revision: https://reviews.freebsd.org/D22609
When an NFSv4 server replies NFSERR_MINORVERSMISMATCH, it does not generate
a status result for the first operation in the compound. Without this
patch, this will result in a bogus EBADXDR error return.
Returning EBADXDR is relatively harmless, but a correct reply of
NFSERR_MINORVERSMISMATCH is needed by the pNFS client to select the correct
minor version to use for a File Layout DS now that there can be NFSv4.2
DS servers.
mount_nfs.c still needs to be fixed for this, although how the mount fails
is only useful to help sysadmins isolate why a mount fails.
Found during testing of the NFSv4.2 client and server.
MFC after: 2 weeks
This is a preliminary commit of NFSv4.2 definitions that will be used by
subsequent commits which adds NFSv4.2 support to the NFS client and server.
There will be a series of these preliminary commits that will prepare for
a major commit of the NFSv4.2 client/server changes currently found in
subversion under projects/nfsv42/sys.
As mandated by POSIX. Also clarify the kill(2) manpage.
While there, restructure the code in killpg1() to use helper which
keeps overall state of the process list iteration in the killpg1_ctx
structued, later used to infer the error returned.
Reported by: amdmi3
Reviewed by: jilles
Sponsored by: The FreeBSD Foundation
MFC after: 2 weeks
Differential revision: https://reviews.freebsd.org/D22621
space. Where the vm_map tree now has null pointers, store pointers to
next and previous entries in right and left fields, making the binary
tree threaded. Have the predecessor and successor functions compute
what the prev and next fields previously stored.
Reviewed by: markj, kib (previous version)
Tested by: pho (previous version)
Differential Revision: https://reviews.freebsd.org/D21964
In some cases, like is locked bootstrap or device's inability to boot from
removable media, we cannot use standard boot sequence and is necessary to
boot kernel directly from U-Boot.
Discussed with: jhibbits
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D13861
Summary:
This matches r351198 from amd64. This only applies to AIM64 and Book-E.
On AIM64 it short-circuits with one domain, to behave similar to
existing. Otherwise it will allocate 16MB huge pages to hold the page
array, across all NUMA domains. On the first domain it will shift the
page array base up, to "upper-align" the page array in that domain, so
as to reduce the number of pages from the next domain appearing in this
domain. After the first domain, subsequent domains will be allocated in
full 16MB pages, until the final domain, which can be short. This means
some inner domains may have pages accounted in earlier domains.
On Book-E the page array is setup at MMU bootstrap time so that it's
always mapped in TLB1, on both 32-bit and 64-bit. This reduces the TLB0
overhead for touching the vm_page_array, which reduces up to one TLB
miss per array access.
Since page_range (vm_page_startup()) is no longer used on Book-E but is on
32-bit AIM, mark the variable as potentially unused, rather than using a
nasty #if defined() list.
Reviewed by: luporl
Differential Revision: https://reviews.freebsd.org/D21449
Since r355472 added code which clears the XATTRSUPPORT bit for non-NFSv4.2
mounts, it is now safe to set it.
There will be a series of these preliminary commits that will prepare for
a major commit of the NFSv4.2 client/server changes currently found in
subversion under projects/nfsv42/sys.
This commit completes updates to nfsproto.h required by the NFSv4.2.
hardclock IPI is delivered.
In the current code after r355311, critical section is taken only
around hardclockintr() call, and sched_preempt() is called after the
section is exited. If we reschedule after exit, as we typically would
due to conditions that caused IPI, in ULE the runq tdq_ipipending is
not cleared, which blocks generation of further preempt IPIs.
Since all relatively modern (10 years) hardware has per-cpu event
timers, restoring the critical section conditionally does not affect
it.
Reported and tested by: cy
Diagnosed and reviewed by: jeff (previous version)
Sponsored by: The FreeBSD Foundation
Differential revision: https://reviews.freebsd.org/D22716
... after the initial common TSS is copied into its final location
during PCPU reallocation.
Reported by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Use the power of variable to avoid spelling out source and generated
files too many times. The previous Makefiles were hard to read, hard to
edit, and badly formatted.
Reviewed by: kevans, emaste
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D22714
This patch adds code to macros to clear attribute bits not supported
by NFSv4.2. For now, these bits are never set anyhow, but this prepares
the code for the addition of NFSv4.2 support in a future commit.
There will be a series of these preliminary commits that will prepare for
a major commit of the NFSv4.2 client/server changes currently found in
subversion under projects/nfsv42/sys.
We were not adding CAP_EVENT to input file capabilities, so kevent()
always failed with ENOTCAPABLE. tail implements a fallback mode to
poll the file in this case, so the failure was not apparent.
Reviewed by: emaste
MFC after: 1 week
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D22709
Suppose that the map entry is wired, so that we later assign
fault_type = entry->protection. Suppose further that we jump back to
RetryLookup. Then fault_type will no longer contain the original
fault protection mask, but instead that of the wired entry.
Submitted by: Wuyang Chung <wuyang.chung1@gmail.com>
Reviewed by: kib
MFC after: 3 days
Github PR: https://github.com/freebsd/freebsd/pull/419
Differential Revision: https://reviews.freebsd.org/D22683
The current version will strip out #include directives appearing inside strings, which is clearly wrong. Improve the processing entirely in the following ways:
- Strip only whole-line comments on every single iteration
- Abort if we see a malformed line that doesn't match the key=value format
- For quoted (backtick or double quote) strings, we'll advance to the end of
the key=value pair and make sure there's not extra stuff left over
- For unquoted key=value pairs, we'll strip any trailing comments and verify
there's no internal whitespace
This has revealed the caveat that key/value pairs can't even include escaped quotes (and haven't been able to). I don't know if this is actually problematic, as we're usually looking at cases like "#include <foo>" or raw identifiers.The current version will strip out #include directives appearing inside strings, which is clearly wrong. Improve the processing entirely in the following ways:
Reviewed and noticed by: brooks
Differential Revision: https://reviews.freebsd.org/D22698
of gpio devices by using kenv to add hints for a new device and then do
'devctl rescan gpiobus4' to make the new device(s) attach.
It's not particularly easy to detect whether the 'at' hint has been deleted
for a child device that's currently attached, so this doesn't handle that.
But the user can use devctl commands to manually detach an existing device.
Don't needlessly pass around qpair pointers when the tracker knows what
qpair it's on. This will simplify code and make it easier to split
submission and completion queues in the future.
Signed-off-by: John Meneghini <johnm@netapp.com>
Uses two GPIO pins as MDC (clock) and MDIO (bidirectional I/O), relies
on mii_bitbang.
Tested on SG-3200 where the PHY for one of the ports is wired independently
of the SoC MDIO bus.
Sponsored by: Rubicon Communications, LLC (Netgate)
While here, call device_delete_children() to detach and dealloc all the
existent children and handle the child's detach errors properly.
Reported by: jenkins, hselasky, ian
Sponsored by: Rubicon Communications, LLC (Netgate)
This is the half of the changes required that work as-is with both in-tree
ZFS and the new hotness, sysutils/openzfs. Highlights are less dependency
on header pollution (from somewhere) and using 'mnttab' instead of
'extmnttab'. In the in-tree ZFS, the latter is a #define for the former,
but in the port extmnttab is actually a distinct struct that's a super-set
of mnttab. We really want mnttab here anyways, so just use it.
