wireguard-openbsd/sys/dev/gpio, branch masterWireGuard implementation for the OpenBSD kernelhttps://git.zx2c4.com/wireguard-openbsd/atom/sys/dev/gpio?h=master2020-06-24T22:03:40Zkernel: use gettime(9)/getuptime(9) in lieu of time_second(9)/time_uptime(9)2020-06-24T22:03:40Zchelohacheloha@openbsd.org2020-06-24T22:03:40Zurn:sha1:3209772dfcc3950dd5df01bc44eebf75e637511e
time_second(9) and time_uptime(9) are widely used in the kernel to
quickly get the system UTC or system uptime as a time_t. However,
time_t is 64-bit everywhere, so it is not generally safe to use them
on 32-bit platforms: you have a split-read problem if your hardware
cannot perform atomic 64-bit reads.
This patch replaces time_second(9) with gettime(9), a safer successor
interface, throughout the kernel. Similarly, time_uptime(9) is replaced
with getuptime(9).
There is a performance cost on 32-bit platforms in exchange for
eliminating the split-read problem: instead of two register reads you
now have a lockless read loop to pull the values from the timehands.
This is really not *too* bad in the grand scheme of things, but
compared to what we were doing before it is several times slower.
There is no performance cost on 64-bit (__LP64__) platforms.
With input from visa@, dlg@, and tedu@.
Several bugs squashed by visa@.
ok kettenis@
gpiodcf(4): unbreak compilation2020-04-15T04:41:39Zchelohacheloha@openbsd.org2020-04-15T04:41:39Zurn:sha1:2f640e264e4d1aa6d14db632626781d903e3571fcleanup unused headers generated by config2020-01-24T05:14:51Zjsgjsg@openbsd.org2020-01-24T05:14:51Zurn:sha1:854a1b2d65aecb1ec4da35222be452e85e91f3b7
ok tedu@ krw@ deraadt@
gpiodcf(4): tvtohz(9)+timeout_add(9) -> timeout_add_msec(9)2019-08-10T18:18:27Zchelohacheloha@openbsd.org2019-08-10T18:18:27Zurn:sha1:94536692933b1b9cb630bf5eab0c3929cf253348
"looks fine" kettenis@, ok deraadt@
Delete unnecessary <sys/file.h> includes2017-12-30T20:46:59Zguentherguenther@openbsd.org2017-12-30T20:46:59Zurn:sha1:98edb555c60b4518edc9c87d00ef86c5a6af2342
ok millert@ krw@
Test for device_lookup() returning NULL in gpioioctl() and gpioclose().2017-08-18T12:15:35Zjsgjsg@openbsd.org2017-08-18T12:15:35Zurn:sha1:3adc742d35c77509d92a31bf527e76358c41b591
Coverity CIDs 1453046, 1453184.
simple sizes for free()2015-08-27T05:48:40Zderaadtderaadt@openbsd.org2015-08-27T05:48:40Zurn:sha1:fb9e5ef0220d94ef74bc3fd75c156df130fe51edThe Swiss Federal Government decided to shut down HBG at the end of 2011.2015-06-07T20:11:52Zclaudioclaudio@openbsd.org2015-06-07T20:11:52Zurn:sha1:947eb24463d7f1e2ea1ab359cd0e71030e1f0b4f
On 6 September 2012 at 12:02:00 UTC both antenna towers were demolished by
controlled explosives. So this is not coming back and we can tedu the
support for HBG form the DCF77 drivers.
Remided by mbalmer
add a size argument to free. will be used soon, but for now default to 0.2014-07-12T18:48:17Ztedutedu@openbsd.org2014-07-12T18:48:17Zurn:sha1:aa3cabd09e6b42375ee0b2752abfd9b6628d36bd
after discussions with beck deraadt kettenis.
In {gpio,gdium}iic_bb_read_bits(), report the state of the SCL bit in addition2013-04-19T23:44:34Zmiodmiod@openbsd.org2013-04-19T23:44:34Zurn:sha1:e685b9a2dd5a6ad5620e9b9e398a69294f31883b
to the state of the SDA bit; the MI i2c code is about to depend upon this.