Commit Graph

187 Commits

Author SHA1 Message Date
Warner Losh
09605c1806 Some minor style changes:
o Convert K&R function definitions to ANSI
o Eliminate spaces/tabs that should have been deleted as part of the de__P
  efforts
o Use struct thread * in preference to d_thread_t *.
2009-05-20 16:29:22 +00:00
Alexander Motin
64886da216 Oops, sorry. Fix for fix. 2009-05-04 08:41:54 +00:00
Alexander Motin
b5f9da0f8d There is no atrtc driver in pc98, so hide atrtcclock_disable variable usage
in APM driver for this platform. This should fix pc98 build.
2009-05-04 08:36:47 +00:00
Alexander Motin
1703f2b424 Rename statclock_disable variable to atrtcclock_disable that it actually is,
and hide it inside of atrtc driver. Add new tunable hint.atrtc.0.clock
controlling it. Setting it to 0 disables using RTC clock as stat-/
profclock sources.

Teach i386 and amd64 SMP platforms to emulate stat-/profclocks using i8254
hardclock, when LAPIC and RTC clocks are disabled.

This allows to reduce global interrupt rate of idle system down to about
100 interrupts per core, permitting C3 and deeper C-states provide maximum
CPU power efficiency.
2009-05-03 17:47:21 +00:00
Ed Schouten
6bfa9a2d66 Replace all calls to minor() with dev2unit().
After I removed all the unit2minor()/minor2unit() calls from the kernel
yesterday, I realised calling minor() everywhere is quite confusing.
Character devices now only have the ability to store a unit number, not
a minor number. Remove the confusion by using dev2unit() everywhere.

This commit could also be considered as a bug fix. A lot of drivers call
minor(), while they should actually be calling dev2unit(). In -CURRENT
this isn't a problem, but it turns out we never had any problem reports
related to that issue in the past. I suspect not many people connect
more than 256 pieces of the same hardware.

Reviewed by:	kib
2008-09-27 08:51:18 +00:00
John Baldwin
58b1b47729 Add multiple include guards. 2008-09-24 18:46:39 +00:00
Poul-Henning Kamp
9b4a8ab7ba Now that all platforms use genclock, shuffle things around slightly
for better structure.

Much of this is related to <sys/clock.h>, which should really have
been called <sys/calendar.h>, but unless and until we need the name,
the repocopy can wait.

In general the kernel does not know about minutes, hours, days,
timezones, daylight savings time, leap-years and such.  All that
is theoretically a matter for userland only.

Parts of kernel code does however care: badly designed filesystems
store timestamps in local time and RTC chips almost universally
track time in a YY-MM-DD HH:MM:SS format, and sometimes in local
timezone instead of UTC.  For this we have <sys/clock.h>

<sys/time.h> on the other hand, deals with time_t, timeval, timespec
and so on.  These know only seconds and fractions thereof.

Move inittodr() and resettodr() prototypes to <sys/time.h>.
Retain the names as it is one of the few surviving PDP/VAX references.

Move startrtclock() to <machine/clock.h> on relevant platforms, it
is a MD call between machdep.c/clock.c.  Remove references to it
elsewhere.

Remove a lot of unnecessary <sys/clock.h> includes.

Move the machdep.disable_rtc_set sysctl to subr_rtc.c where it belongs.
XXX: should be kern.disable_rtc_set really, it's not MD.
2008-04-22 19:38:30 +00:00
Nate Lawson
52604c49a6 Hold Giant over the entire execution of the suspend path instead of
dropping it after each call into newbus.  This doesn't fix any known
problems but seems more correct.

Submitted by:	Marko Zec <zec / icir.org>
2007-12-06 01:39:23 +00:00
Julian Elischer
502e39a873 Apply the same sort of locking done in
sys/dev/acpica/acpi.c rev 1.196 a while ago:

Grab Giant around calls to DEVICE_SUSPEND/RESUME in
acpi_SetSleepState().
If we are resuming non-MPSAFE drivers, they need Giant held for them.
This may fix some obscure suspend/resume problems.  It has fixed keyrate
setting problems that were triggered by cardbus (MPSAFE) changing the
ordering for syscons resume (non-MPSAFE).  Also, add some asserts that
Giant is held in our suspend/resume and shutdown methods.

Submitted by: Marko Zec
2007-11-14 05:43:55 +00:00
Julian Elischer
3745c395ec Rename the kthread_xxx (e.g. kthread_create()) calls
to kproc_xxx as they actually make whole processes.
Thos makes way for us to add REAL kthread_create() and friends
that actually make theads. it turns out that most of these
calls actually end up being moved back to the thread version
when it's added. but we need to make this cosmetic change first.

I'd LOVE to do this rename in 7.0  so that we can eventually MFC the
new kthread_xxx() calls.
2007-10-20 23:23:23 +00:00
John Baldwin
ce533e82a2 Tweak the probe/attach order of devices on the x86 nexus devices.
Various BIOS-related psuedo-devices are added at an order of 5.  acpi0 is
added at an order of 10, and legacy0 is added at an order of 11.
2007-03-20 20:21:44 +00:00
Poul-Henning Kamp
f645b0b51c First part of a little cleanup in the calendar/timezone/RTC handling.
Move relevant variables to <sys/clock.h> and fix #includes as necessary.

Use libkern's much more time- & spamce-efficient BCD routines.
2006-10-02 12:59:59 +00:00
Warner Losh
d708737568 APM was calling the suspend process from a timeout. This meant that
other timeouts could not happen while suspending, including timeouts
for things like msleep.  This caused the system to hang on suspend
when the cbb was enabled, since its suspend path powered down the
socket which used a timeout to wait for it to be done.

APM now creates a thread when it is enabled, and deletes the thread
when it is disabled.  This thread takes the place of the timeout by
doing its polling every ~.9s.  When the thread is disabled, it will
wakeup early, otherwise it times out and polls the varius things the
old timeout polled (APM events, suspend delays, etc).

This makes my Sony VAIO 505TS suspend/resume correctly when APM is
enabled (ACPI is black listed on my 505TS).

This will likely fix other problems with the suspend path where
drivers would sleep with msleep and/or do other timeouts.  Maybe
there's some special case code that would use DELAY while suspending
and msleep otherwise that can be revisited and removed.

This was also tested by glebius@, who pointed out that in the patch I
sent him, I'd forgotten apm_saver.c

MFC After: 3 weeks
2006-05-25 23:06:38 +00:00
Ruslan Ermilov
68f88450a7 Fix build (including both asm.h and asmacros.h is evil). 2005-07-22 15:01:07 +00:00
Jung-uk Kim
a52daa5fd2 Fix smbios(4) and add support for amd64
Approved by:	anholt (mentor)
2005-07-21 00:18:28 +00:00
Matthew N. Dodd
55ec9ed408 - Consistently protect against NULL dereference.
- Simplify conditional logic to make code easier to read.
2005-04-12 20:14:56 +00:00
Warner Losh
86cb007f9f /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 22:18:23 +00:00
Nate Lawson
e5979322ba Remove local hacks to set flags now that the device probe does this for us.
Tested on every device except sio_pci and the pc98 fd.c.  Perhaps something
similar should be done for the "disabled" hints also.

MFC after:	2 weeks
2004-10-14 22:21:59 +00:00
Matthew N. Dodd
c15033ef44 Clarify SDT feature word bits.
Obtained from:	 NetBSD
2004-08-31 21:51:51 +00:00
Matthew N. Dodd
320be82c0f Fix checksum calculation.
Submitted by:	 Jean Delvare <khali@linux-fr.org>
2004-08-31 21:45:30 +00:00
Warner Losh
e04ed822be o Return ai_batteries as 0xffffffff instead of -1. This is a nop change, but
placates gcc which seems to like to complain about -1 being assigned to
  an unsigned value.  It is well defined and intended, but since signess bugs
  are being hunted just change to 0xffffffff.
o Mask the lower 8 bits, not the lower 4 bits for the ai_capabilities word.
  All 8 bits are defined and the 0xf was almost certainly a typo.
o Define APM_UNKNOWN to 0xff for emulation layer.
2004-06-16 20:27:50 +00:00
Poul-Henning Kamp
89c9c53da0 Do the dreaded s/dev_t/struct cdev */
Bump __FreeBSD_version accordingly.
2004-06-16 09:47:26 +00:00
John Baldwin
092a5c4530 Remove atdevbase and replace it's remaining uses with direct references to
KERNBASE instead.
2004-06-10 20:31:00 +00:00
Poul-Henning Kamp
77409fe148 Add missing #include <sys/module.h> 2004-05-30 20:34:58 +00:00
Nate Lawson
5f96beb9e0 Convert callers to the new bus_alloc_resource_any(9) API.
Submitted by:	Mark Santcroos <marks@ripe.net>
Reviewed by:	imp, dfr, bde
2004-03-17 17:50:55 +00:00
Poul-Henning Kamp
dc08ffec87 Device megapatch 4/6:
Introduce d_version field in struct cdevsw, this must always be
initialized to D_VERSION.

Flip sense of D_NOGIANT flag to D_NEEDGIANT, this involves removing
four D_NOGIANT flags and adding 145 D_NEEDGIANT flags.
2004-02-21 21:10:55 +00:00
Poul-Henning Kamp
c9c7976f7f Device megapatch 1/6:
Free approx 86 major numbers with a mostly automatically generated patch.

A number of strategic drivers have been left behind by caution, and a few
because they still (ab)use their major number.
2004-02-21 19:42:58 +00:00
Seigo Tanimura
512824f8f7 - Implement selwakeuppri() which allows raising the priority of a
thread being waken up.  The thread waken up can run at a priority as
  high as after tsleep().

- Replace selwakeup()s with selwakeuppri()s and pass appropriate
  priorities.

- Add cv_broadcastpri() which raises the priority of the broadcast
  threads.  Used by selwakeuppri() if collision occurs.

Not objected in:	-arch, -current
2003-11-09 09:17:26 +00:00
Poul-Henning Kamp
70cd771337 The present defaults for the open and close for device drivers which
provide no methods does not make any sense, and is not used by any
driver.

It is a pretty hard to come up with even a theoretical concept of
a device driver which would always fail open and close with ENODEV.

Change the defaults to be nullopen() and nullclose() which simply
does nothing.

Remove explicit initializations to these from the drivers which
already used them.
2003-09-27 12:01:01 +00:00
John Baldwin
8a9bc9c03b - Use the new resource_disabled() helper function to see if devices are
disabled.
- Change the apm driver to match the acpi driver's behavior by checking to
  see if the device is disabled in the identify routine instead of in the
  probe routine.  This way if the device is disabled it is never created.

Note that a few places (ips(4), Alpha SMP) used "disable" instead of
"disabled" for their hint names, and these hints must be changed to
"disabled".  If this is a big problem, resource_disabled() can always be
changed to honor both names.
2003-07-02 16:09:02 +00:00
Matthew N. Dodd
c27e9c5100 Implement a loader tunable/sysctl to allow the user to request that
the APM driver byte-swap battery time values.  (For broken laptops.)

PR:		i386/42439
Submitted by:	Bruce M Simpson <bms@spc.org>
2003-06-22 05:08:10 +00:00
Matthew N. Dodd
cba6ce369d Despite my best efforts the Linux way of doing this is the only
way that works correctly.

- Remove unused function.
- Move declaration of variables to .S file.
2003-06-13 00:36:03 +00:00
David E. O'Brien
0f0f21c394 Use __FBSDID(). 2003-06-02 06:02:49 +00:00
Matthew N. Dodd
94c35e0af2 Merge PC98 support. 2003-03-25 05:19:18 +00:00
Matthew N. Dodd
a954a4fba0 Correct a mis-merge.
Noticed by:	 johan
2003-03-24 19:54:14 +00:00
Matthew N. Dodd
96aa42527e - Consolidate smapi driver.
- Attach to nexus.
- Use null{open,close}() instead of rolling our own.
2003-03-24 19:40:54 +00:00
Matthew N. Dodd
863463c1cb Add the 'vpd' and 'smbios' drivers. The 'smbios' driver is just a
stub right now.
2003-03-24 19:32:57 +00:00
Matthew N. Dodd
b7b5ae3edb Use repo-copied files in sys/i386/bios. 2003-03-24 19:14:46 +00:00
Poul-Henning Kamp
7ac40f5f59 Gigacommit to improve device-driver source compatibility between
branches:

Initialize struct cdevsw using C99 sparse initializtion and remove
all initializations to default values.

This patch is automatically generated and has been tested by compiling
LINT with all the fields in struct cdevsw in reverse order on alpha,
sparc64 and i386.

Approved by:    re(scottl)
2003-03-03 12:15:54 +00:00
Matthew N. Dodd
95ca467a68 - Removed unecesary code.
- Correct smapi32_new() asm (still doesn't work.)
- Attach to mainboard not isa.
2003-01-18 04:36:12 +00:00
Matthew N. Dodd
7534ac7ab7 A driver for the System Management Application Program
Interface (SMAPI) BIOS, which is present on some IBM
Thinkpad models (560, 600, 770 to name a few.)

The SMAPI BIOS provides access to System Information,
System Configuration, and Power Management.
2003-01-17 08:10:18 +00:00
Poul-Henning Kamp
1eaae5cbe8 Be consistent about functions being static.
Spotted by:	FlexeLint.
2002-10-16 08:57:14 +00:00
Alfred Perlstein
4f492bfab5 use __packed. 2002-09-23 18:54:32 +00:00
John Baldwin
ae829cae03 Hang apm off of the legacy device instead of the nexus. 2002-09-23 15:56:09 +00:00
Mark Murray
bebe1b92bd Use a function instead of embedding non-portable asm() constructs
in C code.
2002-09-21 18:51:19 +00:00
Mark Murray
39ae7d0dc4 Sort includes. 2002-09-21 18:30:12 +00:00
Alfred Perlstein
b63dc6ad47 Remove __P. 2002-03-20 05:48:58 +00:00
Mitsuru IWASAKI
899ccf541a Add generalized power profile code.
This makes other power-management system (APM for now) to be able to
generate power profile change events (ie. AC-line status changes), and
other kernel components, not only the ACPI components, can be notified
the events.

 - move subroutines in acpi_powerprofile.c (removed) to kern/subr_power.c
 - call power_profile_set_state() also from APM driver when AC-line
   status changes
 - add call-back function for Crusoe LongRun controlling on power
   profile changes for a example
2002-03-04 18:46:13 +00:00
Mitsuru IWASAKI
f9390180fe Some fix for the recent apm module changes.
- Now that apm loadable module can inform its existence to other kernel
   components  (e.g. i386/isa/clock.c:startrtclock()'s TCS hack).
 - Exchange priority of SI_SUB_CPU and SI_SUB_KLD for above purpose.
 - Add simple arbitration mechanism for APM vs. ACPI.  This prevents
   the kernel enables both of them.
 - Remove obsolete `#ifdef DEV_APM' related code.
 - Add abstracted interface for Powermanagement operations.  Public apm(4)
   functions, such as apm_suspend(), should be replaced new interfaces.
   Currently only power_pm_suspend (successor of apm_suspend) is implemented.

Reviewed by:	peter, arch@ and audit@
2001-11-01 16:34:07 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00