Home | History | Annotate | Download | only in onewire
History log of /src/sys/dev/onewire/onewire.c
RevisionDateAuthorComments
 1.22  07-Aug-2021  thorpej Merge thorpej-cfargs2.
 1.21  24-Apr-2021  thorpej branches: 1.21.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).
 1.20  14-Apr-2020  kre branches: 1.20.4;

Only include opt_xxx.h headers when _KERNEL_OPT is defined.
 1.19  14-Apr-2020  macallan defflag ONEWIRE_DEBUG
 1.18  30-Nov-2019  ad branches: 1.18.6;
onewire:

- Re-do the signalling to be a little more forgiving and efficient.
- If bus reset fails during probe, try a second time.
- Spread out kernel threads for many busses to avoid thundering herd effect.
 1.17  25-Oct-2019  martin PR kern/54617: onewire(4):

- Alter locking strategy to avoid deadlock on detach.
- Auto bus probe chews CPU. Increase interval from 3s to 10s.
- Put temp sensor S/N in dev description so it can be identified.
- Use mutex/condvar.

Patch from Andrew Doran.
 1.16  25-Jul-2014  dholland branches: 1.16.18; 1.16.28;
Add d_discard to all struct cdevsw instances I could find.

All have been set to "nodiscard"; some should get a real implementation.
 1.15  16-Mar-2014  dholland branches: 1.15.2;
Change (mostly mechanically) every cdevsw/bdevsw I can find to use
designated initializers.

I have not built every extant kernel so I have probably broken at
least one build; however I've also found and fixed some wrong
cdevsw/bdevsw entries so even if so I think we come out ahead.
 1.14  31-Aug-2011  mbalmer branches: 1.14.2; 1.14.12; 1.14.16;
Add glue code to build as module.
 1.13  06-Dec-2009  dyoung Simplify device-activation hooks.
 1.12  12-May-2009  cegger struct device * -> device_t, no functional changes intended.
 1.11  18-Mar-2009  cegger bzero -> memset
 1.10  17-Dec-2008  cegger branches: 1.10.2;
kill MALLOC and FREE macros.
 1.9  05-May-2008  xtraeme branches: 1.9.8;
device_t/softc split and other related cosmetic changes.
 1.8  08-Apr-2008  cegger branches: 1.8.2; 1.8.4;
use aprint_*_dev and device_xname
 1.7  05-Sep-2007  xtraeme branches: 1.7.20;
onewire_lock: remove the flags argument and change the return type to void.
This function is not expected to return an int, because rw_enter() will
always succeed.
 1.6  02-Sep-2007  xtraeme Convert onewire(4) to use rwlock(9) rather than lockmgr(9).
 1.5  09-Jul-2007  ad branches: 1.5.2; 1.5.6; 1.5.8;
Merge some of the less invasive changes from the vmlocking branch:

- kthread, callout, devsw API changes
- select()/poll() improvements
- miscellaneous MT safety improvements
 1.4  16-Nov-2006  christos branches: 1.4.8; 1.4.10;
__unused removal on arguments; approved by core.
 1.3  12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.2  03-Sep-2006  christos branches: 1.2.2; 1.2.4; 1.2.6;
add missing initializer.
 1.1  07-Apr-2006  riz branches: 1.1.2; 1.1.4; 1.1.6; 1.1.10; 1.1.14;
Dallas Semiconductor 1-Wire bus support, from OpenBSD. Currently includes
gpioow(4), attaching a bit-banging driver via a GPIO pin. Also,
owtemp(4) which supports some of the 1-Wire temperature sensors, including
the DS18b20 and DS1920 - temperatures are returned via the envsys(4)
framework.

Original drivers by Alexander Yurchenko (grange@openbsd), with envsys(4)
support and a fix to the 1-wire search algorithm (for discovering
devices on the bus) by me.

As discussed on tech-kern earlier this week.
 1.1.14.5  27-Oct-2007  yamt sync with head.
 1.1.14.4  03-Sep-2007  yamt sync with head.
 1.1.14.3  30-Dec-2006  yamt sync with head.
 1.1.14.2  21-Jun-2006  yamt sync with head.
 1.1.14.1  07-Apr-2006  yamt file onewire.c was added on branch yamt-lazymbuf on 2006-06-21 15:05:02 +0000
 1.1.10.2  24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.1.10.1  07-Apr-2006  tron file onewire.c was added on branch peter-altq on 2006-05-24 15:50:27 +0000
 1.1.6.2  22-Apr-2006  simonb Sync with head.
 1.1.6.1  07-Apr-2006  simonb file onewire.c was added on branch simonb-timecounters on 2006-04-22 11:39:13 +0000
 1.1.4.2  19-Apr-2006  elad sync with head.
 1.1.4.1  07-Apr-2006  elad file onewire.c was added on branch elad-kernelauth on 2006-04-19 03:25:33 +0000
 1.1.2.3  14-Sep-2006  yamt sync with head.
 1.1.2.2  11-Apr-2006  yamt sync with head
 1.1.2.1  07-Apr-2006  yamt file onewire.c was added on branch yamt-pdpolicy on 2006-04-11 11:55:17 +0000
 1.2.6.2  10-Dec-2006  yamt sync with head.
 1.2.6.1  22-Oct-2006  yamt sync with head
 1.2.4.2  09-Sep-2006  rpaulo sync with head
 1.2.4.1  03-Sep-2006  rpaulo file onewire.c was added on branch rpaulo-netinet-merge-pcb on 2006-09-09 02:52:15 +0000
 1.2.2.1  18-Nov-2006  ad Sync with head.
 1.4.10.1  11-Jul-2007  mjf Sync with head.
 1.4.8.4  09-Oct-2007  ad Sync with head.
 1.4.8.3  13-May-2007  ad - Pass the error number and residual count to biodone(), and let it handle
setting error indicators. Prepare to eliminate B_ERROR.
- Add a flag argument to brelse() to be set into the buf's flags, instead
of doing it directly. Typically used to set B_INVAL.
- Add a "struct cpu_info *" argument to kthread_create(), to be used to
create bound threads. Change "bool mpsafe" to "int flags".
- Allow exit of LWPs in the IDL state when (l != curlwp).
- More locking fixes & conversion to the new API.
 1.4.8.2  10-Apr-2007  ad Nuke the deferred kthread creation stuff, as it's no longer needed.
Pointed out by thorpej@.
 1.4.8.1  09-Apr-2007  ad - Add two new arguments to kthread_create1: pri_t pri, bool mpsafe.
- Fork kthreads off proc0 as new LWPs, not new processes.
 1.5.8.1  06-Nov-2007  matt sync with HEAD
 1.5.6.2  02-Oct-2007  joerg Sync with HEAD.
 1.5.6.1  03-Sep-2007  jmcneill Sync with HEAD.
 1.5.2.2  10-Sep-2007  skrll Sync with HEAD.
 1.5.2.1  03-Sep-2007  skrll Sync with HEAD.
 1.7.20.2  17-Jan-2009  mjf Sync with HEAD.
 1.7.20.1  02-Jun-2008  mjf Sync with HEAD.
 1.8.4.4  11-Mar-2010  yamt sync with head
 1.8.4.3  16-May-2009  yamt sync with head
 1.8.4.2  04-May-2009  yamt sync with head.
 1.8.4.1  16-May-2008  yamt sync with head.
 1.8.2.1  18-May-2008  yamt sync with head.
 1.9.8.2  28-Apr-2009  skrll Sync with HEAD.
 1.9.8.1  19-Jan-2009  skrll Sync with HEAD.
 1.10.2.1  13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.14.16.1  18-May-2014  rmind sync with head
 1.14.12.1  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.14.2.1  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.15.2.1  10-Aug-2014  tls Rebase.
 1.16.28.2  21-Apr-2020  martin Sync with HEAD
 1.16.28.1  13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.16.18.2  29-Apr-2017  pgoyette Revise previous. Rather than explicitly including <sys/localcount.h>
in all the places where {b,c}devsw is initialized, just include it
from <sys/conf.h>. This avoids an include-sequence dependancy.
 1.16.18.1  29-Apr-2017  pgoyette Add DEVSW_MODULE_INIT to existing device-driver modules, so that they
willl have a localcount defined and thus be permitted to load. Without
a localcount, loading the module will return EINVAL.

XXX the dtrace and drm stuff might need to be fed back upstream?
 1.18.6.1  20-Apr-2020  bouyer Sync with HEAD
 1.20.4.1  21-Mar-2021  thorpej Give config_found() the same variadic arguments treatment as
config_search(). This commit only adds the CFARG_EOL sentinel
to the existing config_found() calls. Conversion of config_found_sm_loc()
and config_found_ia() call sites will be in subsequent commits.
 1.21.8.1  04-Aug-2021  thorpej Adapt to CFARGS().

RSS XML Feed