Remove workaround for ancient HTML generation code.

Fix couple of typos.

branches: 1.44.12; 1.44.16;
Fix a few file system paths to use Pa macro.

Document that ENVSYS_STEMP is in microkelvins.

branches: 1.42.2;
Document the new SYSMON_FHAS_ENTROPY flag.

branches: 1.41.6;
Remove boilerplate in CODE REFERENCES on file paths.
Describe in intro(9) how to read paths in the CODE REFERENCES section.

branches: 1.40.2;
Use a typedef to define the prototype of the per-sensor callback.

Update manpage for the prototype, and fix a fubar'd Cross-reference.

Mark up NULL with Dv.

Update for recent changes.

Remove trailing whitespace. Use Nm instead of Xr to itself.

Document the new sysmon_envsys_sensor_event() function.

Update to reflect recent removal of monitor member from envsys_data_t
structure.

Some minor improvements to wording, grammar, and markup.

Avoid marking up punctuation.

Update for recent changes to data structures.

A couple small grammar fixes. From Constantine Aleksandrovich Murenin.

Use Dv for ENVSYS_*.

Clarify usage of the function members in struct sysmon_envsys and note
that they're optional.

Drop trailing whitespace.

Ooops - {get,set}_limits() need to be sensor-specific. Pass an extra
argument to them to identify the individual sensor being processed.

Remove left-over XXX - thanks wiz@ for pointing this out.

Add capability to send sensor limit values to the driver so they can
be programmed into device registers. This way we can let the hardware
help us out instead of having to always compare the value against each
limit. (Driver updates for some sensors to take advantage of this
capability will be forthcoming.)

Since we no longer have individual events for each sensor value limit,
we don't need individual flag bits. Clean up extra bit definitions.
Bump kernel version - welcome to 5.99.13

Fix spelling.

Formatting improvements.

New sentence, new line. Use \*[Gt] for HTML output.
Punctuation improvements. Other fixes.

branches: 1.20.2;
Remove LKMs and switch to the module framework, pass 1.

Proposed on tech-kern@.

branches: 1.19.4; 1.19.8;
Convert TNF licenses to new 2 clause variant

branches: 1.18.2; 1.18.4;
Add three new values for ENVSYS_DRIVE units:

* ENVSYS_DRIVE_OFFLINE, ENVSYS_DRIVE_CHECK and ENVSYS_DRIVE_BUILD

branches: 1.17.4;
Add ENVSYS_DRIVE_MIGRATING for ENVSYS_DRIVE sensors, this is for RAID
volumes that are migrating such as when you change the stripe size.

While I'm here use the same string than we had in the old framework to
report status "online" vs "drive is online", because the sensor might be
a RAID volume and not just a drive.

Improve description for ENVSYS_FMONNOTSUPP.

Indentation fix for the units list.

Small indentation fix for ENVSYS_BATTERY_CAPACITY_* description list.

Improve description of sme_refresh and state.

Extend the envsys2 API (one more time, sorry) as defined in:

http://mail-index.netbsd.org/tech-kern/2007/11/09/0001.html

sysmon_envsys_create() and sysmon_envsys_destroy() were added to
create/destroy sysmon_envsys objects (and its TAILQ/LIST for sensors/events).

sysmon_envsys_sensor_attach() and sysmon_envsys_sensor_detach() were
added to attach/detach sensors to a specified sysmon_envsys device.

The events framework is now per device and configurable via the
ENVSYS_SETDICTIONARY ioctl or /etc/envsys.conf and envstat(8).

Update all users and documentation to reflect these changes.

Sync with latest round of changes and improve vastly sysmon_envsys(9).

Fix the problems described in:
http://mail-index.netbsd.org/current-users/2007/07/16/0012.html

- Introduce sme_class into the sysmon_envsys struct to specify a
class; currently there are two classes: SME_CLASS_ACADAPTER and
SME_CLASS_BATTERY.

- Add a new envsys event: PENVSYS_EVENT_LOW_POWER that is reached when
all SME_CLASS_BATTERY devices are in CRITICAL/LOW state and there's not
any SME_CLASS_ACADAPTER connected.

- Add the 'low-power' event into the sensor_battery script that will
shutdown the system gracefully via 'shutdown -p'. If powerd(8) is
not running, cpu_reboot(9) with RB_POWERDOWN is used.

- Make acpiacad(4) a SME_CLASS_ACADAPTER device and acpibat(4) a
SME_CLASS_BATTERY device.

Update the documentation accordingly to these changes.

Modify a block that wasn't valid anymore.

Update to match current code.

Document the new sensor units type: ENVSYS_GSTRING and its member
in the envsys_data_t struct.

- Remove reference to unexistent sysmon_power(9). (I will work on this
manpage, but no ETA yet).
- Xref envstat(8).

branches: 1.5.4;
Explain a bit more about edata->desc being unique in a device.

Fix a typo: it's ENVSYS_FPERCENT not ENVSYS_FPERCENTAGE.

Bump date.

Add the CODE REFERENCES section.

Document the sysctl node to change the refresh value of the callout
function that monitors the sensors.

Imported envsys 2, a brief description of the new features:
(Part 4: documentation and configuration files)

* Support for detachable sensors.
* Cleaned up the API for simplicity and efficiency.
* Ability to send capacity/critical/warning events to powerd(8).
* Adapted all the code to the new locking order.
* Compatibility with the old envsys API: the ENVSYS_GTREINFO
and ENVSYS_GTREDATA ioctl(2)s are supported.
* Added support for a 'dictionary based communication channel' between
sysmon_power(9) and powerd(8), that means there is no 32 bytes event
size restriction anymore.
* Binary compatibility with old envstat(8) and powerd(8) via COMPAT_40.
* All drivers with the n^2 gtredata bug were fixed, PR kern/36226.

Tested by:

blymn: smsc(4).
bouyer: ipmi(4), mfi(4).
kefren: ug(4).
njoly: viaenv(4), adt7463.c.
riz: owtemp(4).
xtraeme: acpiacad(4), acpibat(4), acpitz(4), aiboost(4), it(4), lm(4).